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WO2014038344A1 - Meshing chain-type forward-backward movement operation device - Google Patents

Meshing chain-type forward-backward movement operation device Download PDF

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Publication number
WO2014038344A1
WO2014038344A1 PCT/JP2013/071548 JP2013071548W WO2014038344A1 WO 2014038344 A1 WO2014038344 A1 WO 2014038344A1 JP 2013071548 W JP2013071548 W JP 2013071548W WO 2014038344 A1 WO2014038344 A1 WO 2014038344A1
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WO
WIPO (PCT)
Prior art keywords
advance
retreat
meshing
slide
advancing
Prior art date
Application number
PCT/JP2013/071548
Other languages
French (fr)
Japanese (ja)
Inventor
佐治　智之
和田　亨
Original Assignee
株式会社 椿本チエイン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 椿本チエイン filed Critical 株式会社 椿本チエイン
Publication of WO2014038344A1 publication Critical patent/WO2014038344A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/18—Chains having special overall characteristics
    • F16G13/20—Chains having special overall characteristics stiff; Push-pull chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
    • F16H19/0636—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the flexible member being a non-buckling chain

Definitions

  • the present invention is used for manufacturing equipment in various manufacturing fields, transport equipment in the transportation field, nursing care equipment in the medical and welfare field, stage equipment in the art field, etc. It relates to an actuating device.
  • a meshing chain type advance / retreat operation device including an advance / retreat guide mechanism for guiding is known (for example, Patent Document 1 to Patent Document 3). Hereinafter, it is simply referred to as an advance / retreat operation device.
  • the advance / retreat guide mechanism of the advance / retreat operation device has a so-called multistage pantograph structure in which a plurality of X-shaped swingable arms are arranged continuously in the advance / retreat direction. have. And one end of the advancing / retreating direction of the multistage pantograph is connected to the base, and the other end is connected to a lifting table as an actuated body.
  • the advance / retreat guide mechanism of the advance / retreat operation device is attached to one long guide pole extending along the advance / retreat direction and the tip of the meshing chain.
  • a pair of guide rollers provided on a lifting table as an actuated body. And a pair of guide roller is comprised so that it may move to an advance / retreat direction, pinching
  • the advance / retreat guide mechanism of the advance / retreat operation device in the conventional third aspect described in Patent Document 3 has a swingable bending arm. One end of the bending arm is connected to the base, and the other end is connected to a lifting table as an actuated body.
  • the advance / retreat guide mechanism in the conventional first aspect has a multi-stage pantograph structure, there are many places where the arms are swingably connected, and the influence of play at these places is large. Therefore, for example, when the advancing / retreating direction is a horizontal direction, the pantograph is hung down so that a portion of the pantograph located on the advancing side in the advancing / retreating direction bows down to stably guide the actuated body. There was a problem that I could not.
  • the conventional advance / retreat guide mechanism in the second aspect is a structure in which a pair of guide rollers move in the advance / retreat direction while holding the guide pole. Therefore, troubles such as interference between the guide rollers occur, the problem that the actuated body cannot be stably guided, or the guide pole needs to be elongated according to the stroke of the actuated object, There was a problem that the structure was enlarged.
  • the conventional advance / retreat guide mechanism in the third aspect has a structure having a swingable bending arm. For this reason, there is a problem that the influence of the play at the pivotally connected portion of the arm is increased by the long arm, and the actuated body cannot be stably guided.
  • FIGS. 9A and 9B a configuration of the advance / retreat operation device 700 shown in FIGS. 9A and 9B can be considered.
  • FIG. 9A is a side view showing when the improved conventional advance / retreat operation device 700 is retracted
  • FIG. 9B is a side view showing the advance / retreat operation device 700 when it is advanced.
  • the advance / retreat operation device 700 expands and contracts along the advance / retreat direction S of the actuated body 710 and moves the actuated body 710 in the advance / retreat direction S with respect to the base 720. It has an advance / retreat guide mechanism 730 that guides along and a pair of meshing chains that transmit the power of a drive motor (not shown) to the actuated body 710 to advance and retract the actuated body 710.
  • the base 720 includes a chain storage portion 721 that stores the disengaged portions of the pair of meshing chains, and a drive sprocket (not shown) that transmits the power of the drive motor to the pair of meshing chains.
  • the advance / retreat guide mechanism 730 has a so-called cylindrical telescopic structure, and includes a first cylinder part 731, a second cylinder part 732, a third cylinder part 733, and a fourth cylinder part 734.
  • the fourth cylinder part 734 is slidable so as to enter and exit the inside of the third cylinder part 733
  • the third cylinder part 733 is slidable so as to enter and exit the inside of the second cylinder part 732
  • the cylinder part 732 is slidable so as to enter and exit the first cylinder part 731.
  • the first cylinder portion 731 is fixed relatively to the base 720.
  • the advance / retreat guide mechanism 730 has a cylindrical telescopic structure, when the meshing portion 740G of the meshing chain moves from the position of FIG. 9A to the position of FIG. 9B, the advance / retreat guide mechanism 730 and the meshing chain The interval with the meshing portion 740G changes.
  • the distance between the advance / retreat guide mechanism 730 and the meshing part 740G is the distance Ll between the first cylindrical part 731 and the meshing part 740G.
  • the interval between the advance / retreat guide mechanism 730 and the meshing portion 740G changes to the interval L2 between the fourth tube portion 734 and the meshing portion 740G.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is a meshing chain type having a meshing portion of a meshing chain and an advance / retreat guide mechanism that stably guides an actuated body.
  • the object is to provide an advancing / retracting device.
  • the advancing / retreating device in the first aspect of the present application includes a pair of meshing chains that transmit power to the actuated body to advance and retract the actuated body, and extend and retract along the advancing / retreating direction of the actuated body. And a forward / backward guide mechanism for guiding the base along the forward / backward direction.
  • the advance / retreat guide mechanism has a plurality of slide portions that are juxtaposed along the juxtaposed direction and are relatively slidable in the advance / retreat direction, and the juxtaposed direction of the plurality of slide portions and the advance / retreat direction Are crossed, and the slide portions are provided in contact with each other along the juxtaposed direction.
  • a retracting end slide portion located on the retract side in the advance / retreat direction is fixed relative to the base among the plurality of slide portions.
  • the advance end slide portion located on the advance side in the advance / retreat direction is arranged closer to the meshing chain than the retracting end slide portion along the parallel arrangement direction. And connected to the advancing end in the advancing / retreating direction of the meshed portion of the actuated body or the meshing chain, and fixed relative to the advancing end in the advancing / retreating direction of the meshing portion.
  • relatively fixed means that two objects are fixed to each other so that the positional relationship does not change relatively, and one object is directly relative to the other object. It may be fixed or indirectly fixed.
  • the distance between the advancing end slide part and the advancing side of the meshing part of the meshing chain is always the same in the entire range of the stroke in which the actuated body advances and retreats along the advancing and retreating direction.
  • the load resistance with respect to the load that the advancing end portion of the meshing portion of the chain receives from a conveyed object or the like is always constant over the entire stroke range. Therefore, the advance / retreat guide mechanism can stably guide the meshing portion of the meshing chain and the actuated body.
  • the retraction side slide portion of the retraction side slide portion located on the retreat side in the advance / retreat direction among the plurality of slide portions is the retraction side slide portion of the plurality of slide portions.
  • the cross-sectional area of the advancing side slide portion located on the advancing side in the advancing / retreating direction is set larger than the cross-sectional area viewed from the advancing / retreating direction.
  • the load resistance on the retreat side where the load acts more than the advancement side increases, but in the second aspect, the cross-sectional areas of the plurality of slide portions have the same configuration. In comparison, a decrease in rigidity of the advance / retreat guide mechanism can be suppressed.
  • the retraction side slide portion located on the retreat side in the advance / retreat direction among the plurality of slide portions is located closer to the advance side in the advance / retreat direction than the retreat side slide portion among the plurality of slide portions. It is made of a material having higher rigidity than the material of the advancing side slide portion.
  • the number of the plurality of slide portions is three or more, including an intermediate slide portion between the retracting end slide portion and the advance end slide portion, and the advance side in the advance / retreat direction of the intermediate slide portion
  • An arm extending toward the meshing chain, and an engagement provided at the tip of the arm, which engages with the meshing portion of the meshing chain and is slidable in the advancing and retreating direction with respect to the meshing portion of the meshing chain. Department.
  • the engaging portion of the arm engages with the intermediate portion of the meshing portion of the meshing chain with the meshing portion of the meshing chain advanced, the meshing portion of the meshing chain and the actuated body can be guided more stably. Can do. Further, when the meshing portion of the meshing chain is retracted, the arm of the intermediate slide portion reaches the vicinity of the base in a state where the arm of the intermediate slide portion is located rearward in the traveling direction. The advancing / retreating guide mechanism can be smoothly reduced without obstruction.
  • the perspective view which shows the advance / retreat operation apparatus at the time of advance regarding the first embodiment of the present invention is a disassembled perspective view of a pair of meshing chains used for the advance / retreat operation device of FIG. 1, and (B) is a perspective view of a pair of meshing chains.
  • (A) is a front view at the time of retreating of the advance / retreat operation device of FIG. 1
  • (B) is a side view at the time of retraction of the advance / retreat operation device of FIG.
  • the side view at the time of advance of the advance / retreat operation device of FIG. The front view which shows the advancing / retreating operation apparatus of 2nd Embodiment.
  • (A) is a front view of the advance / retreat operation device during retraction according to the fourth embodiment
  • (B) is a side view of the advance / retreat operation device during retraction according to the fourth embodiment.
  • (A), (B) is a side view which shows the time of retraction
  • FIG. 1 is a perspective view showing the advance / retreat operation device 100 at the time of advancement
  • FIG. 2 (A) is an exploded perspective view of a part of the pair of meshing chains 140 of the advance / retreat operation device 100
  • (B) is a perspective view of a pair of meshing chains 140 of the advance / retreat operation device 100.
  • 3A is a front view of the advance / retreat operation device 100 during retraction
  • FIG. 3B is a side view as viewed from the reference numeral 3B in FIG. 3A
  • FIG. It is the side view seen from the code 4 inside.
  • the advance / retreat operation device 100 includes a pair of meshing chains 140 and an advance / retreat guide mechanism 130.
  • the pair of meshing chains 140 transmits the power of a drive motor (not shown) to the actuated body 110 to advance and retract the actuated body 110.
  • the advance / retreat guide mechanism 130 expands and contracts along the advance / retreat direction S of the operated body 110 to guide the operated body 110 along the advance / retreat direction S with respect to the base 120.
  • the power of the drive motor is transmitted to the pair of meshing chains 140 in the base 120 via a drive sprocket (not shown), and the pair of meshing chains 140 is taken in and out of the chain storage part 121 of the base 120.
  • the actuated body 110 is moved back and forth in the forward / backward direction S with respect to the base 120.
  • the advancing / retreating direction S is a vertical direction
  • a transported object (not shown) placed on the operated part 110 can be moved along the advancing / retreating direction S, and the advancing / retreating direction S is horizontal.
  • the conveyed product that comes into contact with the actuated body 110 can be moved along the forward / backward direction S.
  • the pair of meshing chains 140 includes a first meshing chain 140A and a second meshing chain 140B.
  • the first meshing chain 140 ⁇ / b> A includes a plurality of internal tooth plates 141, an external tooth plate 142, a bush 143, a connecting pin 144, and a roller 145.
  • Each pair of internal tooth plates 141 is spaced apart along the chain width direction U, and each internal tooth plate 141 has bushing holes disposed in the longitudinal direction of the chain.
  • Each pair of external tooth plates 142 is disposed on the outside of each pair of internal tooth plates 141, and each external tooth plate 142 has pin holes arranged in the longitudinal direction of the chain.
  • each connecting pin 144 is rotatably inserted into the bushing 143, and the connecting pin 144 is press-fitted into the pin holes of the pair of external tooth plates 142, whereby each pair of internal tooth plates 141 and each pair of external tooth plates. 142 is connected along the longitudinal direction of the chain.
  • the unit composed of the pair of internal tooth plates 141 and the pair of external tooth plates 142 constitutes one row of units in the chain width direction U, but may be two or more rows. Needless to say.
  • the pair of meshing chains 140 has a meshing portion 140G meshed and integrated with each other, and a pair of meshing portions 140H disengaged.
  • Each disengagement portion 140 ⁇ / b> H is housed in the housing portion 121 shown in FIG. 1, and the meshing portion 140 ⁇ / b> G is pulled out from the housing portion 121.
  • a drive motor (not shown) rotates forward, the power of the drive motor pulls out the pair of disengagement portions 140H from the storage portion 121 via a drive sprocket (not shown).
  • the engagement portion 140G is sequentially engaged and integrated by two guide grooves (not shown) in the base 120, thereby forming an engagement portion 140G.
  • the engagement portion 140G Advances along the forward / backward direction S to the left in FIG.
  • the meshing portion 140G of the pair of meshing chains 140 receives power and retracts along the advance / retreat direction S, while the meshing is disengaged by branching a single guide groove (not shown) in the base 120. Then, the disengagement portion 140H is stored in the two chain storage portions 121, respectively.
  • the advance / retreat guide mechanism 130 includes a retracting end slide portion 131, an intermediate slide portion 133, and an advancing end slide portion 132 as a plurality of slide portions that are relatively slidable in the advance / retreat direction S.
  • the side-by-side direction T and the advancing / retracting direction S of the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 intersect, and the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 are It is provided in a state of being in contact with each other in the juxtaposed direction T. Further, the retracting end slide portion 131 among the plurality of slide portions is fixed relative to the pace 120 in a state where the advance / retreat guide mechanism 130 extends in the advance / retreat direction S. That is, the retracting end slide portion 131 is fixed directly or indirectly to the base 120.
  • the advance end slide portion 132 of the plurality of slide portions is connected to the pair of meshing chains 140 in the juxtaposed direction T rather than the retracted end slide portion 131. Closely arranged.
  • the advancing end slide part 132 is connected to the advancing end part of the meshed portion 140G of the actuated body 110 or the pair of meshing chains 140, and is fixed relatively to the advancing end of the meshing part 140G.
  • the retracting end slide portion 131, the intermediate slide portion 133, and the advanced end slide portion 132 are Along the juxtaposed direction T, they are arranged side by side toward the meshing chain 140.
  • the advancing / retreating direction S is the horizontal direction and the juxtaposed direction T is the vertical direction, but instead, the advancing / retreating direction S may be the vertical direction and the juxtaposed direction T may be the horizontal direction.
  • the advance / retreat guide mechanism 130 When the juxtaposed direction T is a vertical direction, the advance / retreat guide mechanism 130 is positioned below the meshing portion 140G of the pair of meshing chains 140, and the advance / retreat guide mechanism 130 receives oil from the meshing portions 140G of the pair of meshing chains 140. It becomes.
  • the retracting end slide part 131 is provided on the protruding rail part 131a extending along the advancing / retreating direction S, the advancing restricting part 131d provided on the advancing side in the advancing / retreating direction S, and the retracting side in the advancing / retreating direction S. And an evacuation restricting portion 131e.
  • the intermediate slide portion 133 includes a protruding rail portion 133a extending along the advancing / retreating direction S, a concave groove portion 133b that slidably engages with the protruding rail portion 131a of the retracting end slide portion 131, and a retracting portion.
  • the protrusion 133c that can come into contact with the advance restricting portion 131d and the retract restricting portion 131e of the end slide portion 131, the advance restricting portion 133d provided on the advance side in the advance / retreat direction S, and the retract side in the advance / retreat direction S.
  • an evacuation restricting portion 133e an evacuation restricting portion 133e.
  • the advancing end slide portion 132 can come into contact with the concave groove portion 132b slidably engaged with the protruding rail portion 133a of the intermediate slide portion 133, and the advancing restriction portion 133d and the retraction restriction portion 133e of the intermediate slide portion 133. And a protruding portion 132c.
  • the cross-sectional shape of the protrusion rail portion 131a of the retracting end slide portion 131 viewed from the advancing / retreating direction S is formed in a T shape, and the cross-sectional shape of the concave groove portion 133b of the intermediate slide portion 133 viewed from the advancing / retreating direction S is projected. It may be formed in a shape that wraps around the T-shaped section of the strip rail portion 131a and the like, and the concave groove portion 133b of the intermediate slide portion 133 may be configured to engage with the projecting rail portion 131a of the retracting end slide portion 131. .
  • the intermediate slide portion 133 and the retracting end slide portion 131 can be slid in the forward / backward direction S while restricting the movement in the direction (T) away from each other.
  • the cross-sectional shape of the ridge rail portion 133a of the intermediate slide portion 133 viewed from the advancing / retreating direction S is formed in a T shape
  • the cross-sectional shape of the concave groove 132b of the advancing end slide portion 132 viewed from the advancing / retreating direction S is formed. It is formed in a shape that wraps around the T-shaped cross section of the ridge rail portion 133a, and is configured such that the concave groove portion 132b of the advancing end slide portion 132 is engaged with the ridge rail portion 133a of the intermediate slide portion 133. Also good.
  • the intermediate slide part 133 and the advance end slide part 132 can be slid in the advance / retreat direction S while restricting the movement in the direction (T) away from each other.
  • the advance end slide portion 132 and the intermediate slide portion 133 are integrated with respect to the retracting end slide portion 131. Relatively slide along the advance / retreat direction S toward the advance side. At this time, the protrusion 133c of the intermediate slide part 133 moves away from the retracting restriction part 131e of the retracting end slide part 131 and approaches the advance restricting part 131d of the retracting end slide part 131.
  • the distance L between the advancing end slide portion 132 and the advancing end portions of the meshing portions 140G of the pair of meshing chains 140 is always constant while the actuated body 110 moves over a predetermined stroke.
  • the withstand load against the load that the advancing end portion of the meshing portion 14OG of the meshing chain 140 receives from the conveyed product or the like is always constant over the entire stroke range.
  • the advance end slide portion 132 is moved to the intermediate slide portion 133.
  • the protrusion 132c of the advance end slide part 132 is separated from the advance restriction part 133d of the intermediate slide part 133 and approaches the retraction restriction part 133e of the intermediate slide part 133.
  • the advance end slide portion 132 and the intermediate slide portion 133 are integrated with respect to the retraction end slide portion 131.
  • the protrusion 133c of the intermediate slide part 133 is further separated from the advance restricting part 131d of the retracting end slide part 131 and approaches the retracting restricting part 13le of the retracting end slide part 131.
  • the advance / retreat guide mechanism 130 includes the retracting end slide portion 131 and the intermediate slide as a plurality of slide portions relatively slidable along the advance / retreat direction S. Part 133 and advancing end slide part 132.
  • the juxtaposed direction T of the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 intersects the advancing / retreating direction S.
  • the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 are in contact with each other along the juxtaposed direction T.
  • the retracting end slide portion 131 among the plurality of slide portions is fixed relative to the base 120, and the advance end slide portion 132 is the retracting end.
  • the sliding portion 131 is disposed closer to the pair of meshing chains 140, and is connected to the advancing end portion in the advancing and retreating direction of the meshing portion 140G of the actuated body 110 or the pair of meshing chains 140. It is fixed relative to the advancing end of the direction. Accordingly, the advance / retreat guide mechanism 130 can stably guide the meshing portion 140G of the pair of meshing chains 140 and the actuated body 110, and the effect is enormous.
  • the advance / retreat operation device 200 of the second embodiment increases the number of slide portions of the advance / retreat guide mechanism 130 of the advance / retreat operation device 100 of the first embodiment to four, and a ridge rail portion that engages between the slide portions, and Two sets of concave grooves are formed. Since many elements are common to the advance / retreat operation device 100 of the first embodiment, detailed description of common matters is omitted, and only the reference numerals in the 200s are shared with the last two digits.
  • the advance / retreat guide mechanism 230 of the advance / retreat operation device 200 in the second embodiment includes a retracting end slide portion 231, a first intermediate slide portion 233, a second intermediate slide portion 234, and an advancing end as a plurality of slide portions.
  • a slide portion 232 is provided.
  • the retracting end slide portion 231 has two projecting rail portions 231a extending along the advance / retreat direction S.
  • the first intermediate slide portion 233 is slidably engaged with two protrusion rail portions 233a extending along the advance / retreat direction S and two protrusion rail portions 231a of the retracting end slide portion 231 2.
  • the second intermediate slide portion 234 is slidably engaged with the two protrusion rail portions 234a extending in the advance / retreat direction S and the two protrusion rail portions 233a of the first intermediate slide portion 233, respectively.
  • two concave structures 234b are provided.
  • the advancing end slide portion 232 has two concave groove portions 232b that slidably engage with the two protruding rail portions 234a of the second intermediate slide portion 234, respectively. This increases the rigidity of the advance / retreat guide mechanism 230 when the number of engagement portions between the slide portions increases and extends in the advance / retreat direction S.
  • the advance / retreat operation device 300 according to the third embodiment will be described with reference to FIG.
  • the advance / retreat operation device 300 increases the number of slide portions of the advance / retreat guide mechanism 130 of the advance / retreat operation device 100 according to the first embodiment to four, and the juxtaposed direction T of the slide portions with respect to the base 120. Is a change. Since many elements are common to the advance / retreat operation device 100 of the first embodiment, detailed description of common matters is omitted, and only the reference numbers in the 300 series having the last two digits are attached.
  • the advance / retreat guide mechanism 330 of the advance / retreat operation device 300 includes a retract end slide portion 331, a first intermediate slide portion 333, a second intermediate slide portion 334, and an advance end as a plurality of slide portions.
  • a slide portion 332 is provided. Further, the retracting end slide portion 331, the first intermediate slide portion 333, the second intermediate slide portion 334, and the advance end slide portion 332 are arranged in contact with each other along the juxtaposed direction T.
  • the advancing / retreating direction S of the actuated bodies 310 is set to the horizontal direction
  • the juxtaposed direction T is also set to the horizontal direction, but instead, the advancing / retreating direction S of the actuated bodies 310 is set to the vertical direction.
  • the juxtaposed direction T may be the horizontal direction.
  • FIG. 7A is a front view of the advance / retreat operation device 400 at the time of retraction
  • FIG. 7B is a side view seen from the reference numeral 7B shown in FIG. 7A
  • FIG. It is a side view which shows the advance / retreat operation device 400 at the time.
  • the advance / retreat operation device 400 of the fourth embodiment increases the number of slide portions of the advance / retreat guide mechanism 130 in the advance / retreat operation mechanism 100 of the first embodiment to four, and the cross-sectional area of each slide portion viewed from the advance / retreat direction S is increased.
  • the arms 433f and 434f that are engaged with the meshing portions 140G of the pair of meshing chains 140 are formed in the middle slide portion. Since many elements of the advance / retreat operation device 100 of the fourth embodiment are common to the advance / retreat operation device 100 of the first embodiment, detailed description of common items is omitted, and reference numerals in the 400s are common to the last two digits. It is only attached.
  • the advance / retreat guide mechanism 430 of the advance / retreat operation device 400 includes a retract end slide portion 431, a first intermediate slide portion 433, a second intermediate slide portion 434, and an advance end slide portion as a plurality of slide portions. 432.
  • the first intermediate slide portion 433 constitutes a retraction side slide portion located on the retreat side in the advance / retreat direction S.
  • the second intermediate slide part 434 constitutes an advance side slide part located on the advance side in the advance / retreat direction S from the first intermediate slide part 433.
  • the cross-sectional area of the first intermediate slide part 433 viewed from the advance / retreat direction S is set larger than the cross-sectional area of the second intermediate slide part 434 viewed from the advance / retreat direction S.
  • the thickness TH2 in the juxtaposed direction T at the base of the first intermediate slide part 433 is set to be thicker than the thickness THI in the juxtaposed direction T at the base of the second intermediate slide part 434. Therefore, the sectional area of the first intermediate slide part 433 viewed from the advancing / retreating direction S is set larger than the sectional area of the second intermediate slide part 434 viewed from the advancing / retreating direction S.
  • the thickness not only the thickness but also the width may be changed to increase the cross-sectional area.
  • the first intermediate slide part 433 as the retracting side slide part is formed of a material having higher rigidity than the material of the second intermediate slide part 434 as the advance side slide part.
  • the load resistance of the advancing / retracting operation device 400 increases on the retract side where the load acts more than the advance side in the state where the meshing portion 440G of the pair of mesh chains 440 has advanced.
  • the material of the first intermediate slide part 433 is steel
  • the material of the second intermediate slide part 434 is aluminum.
  • the advance / retreat operation device 400 of the fourth embodiment includes three or more slide portions (actually four).
  • the first intermediate slide portion 433 and the second intermediate slide portion 434 between the retracting end slide portion 431 and the advance end slide portion 432 are engaged chain 440 from the advance side in the first intermediate slide portion 433 and the second intermediate slide portion 434.
  • Arms 433f, 434f extending toward the front and engaging ends 440G of the pair of meshing chains 440 provided at the tips of the arms 433f, 434f, and sliding along the forward / backward direction S with respect to the meshing portions 440G.
  • Freely engaging portions 433g and 434g are provided.
  • the engagement portions 433g and 434g of the arms 433f and 434f are engaged with the intermediate portions of the engagement portions 440G of the pair of engagement chains 440 in a state where the engagement portions 440G of the pair of engagement chains 440 have advanced.
  • the arm 433f of the first intermediate slide portion 433 and the arm 434f of the second intermediate slide portion 434 are positioned rearward in the traveling direction. To the vicinity of the source 420. Therefore, the advance / retreat guide mechanism 130 is smoothly reduced without the arms 433f, 434f getting in the way.
  • the engaging portion 433g of the first intermediate slide portion 433 is a recess that is slidably engaged along the forward / backward direction S with respect to the end portion of the connecting pin 144 protruding outward from the outer surface of the external tooth plate 141.
  • the engaging portion 433g in the direction orthogonal to the advancing / retreating direction S and the juxtaposed direction T can be restricted.
  • the second intermediate slide portion 434 extends from the second intermediate slide portion 434 toward the meshing chain on the advance side of the second intermediate slide portion 434 and on the advance side of the arm 433f of the first intermediate slide portion 433.
  • the arm 434f includes an arm 434f and an engaging portion 4349 that is formed at the tip of the arm 434f and engages with a meshing portion 440G of the pair of meshing chains 440 and is slidable along the forward / backward direction S.
  • the engagement portion 434g of the second intermediate slide portion 434 engages with the meshing portion 440G of the pair of meshing chains 440 on the advancing side with respect to the engagement portion 433g of the arm 433f of the first intermediate slide portion 433, and the pair of meshing
  • the relative movement in the juxtaposed direction T with respect to the meshing portion 440G of the chain 440 is restricted.
  • the retracting end slide portion 431 includes an advance restricting portion 431d and an retract restricting portion 431e.
  • the first intermediate slide part 433 includes a protrusion part 433c, an advance restriction part 433d, and a retraction restriction part 433e.
  • the second intermediate slide portion 434 includes a protrusion 434c, an advance restriction portion 434d, and a retraction restriction portion 434e.
  • the advancing end slide portion 432 has a protrusion 432c.
  • a rotatable roller is provided at an engagement portion between the concave structure portion 433b and the ridge rail portion 431a on the retreat side, and an engagement portion between the concave groove portion 434b and the ridge rail portion 433a on the advance side. It is desirable to provide a rotatable ball on the surface. Since the roller has a greater load resistance than the ball, the load resistance on the retract side in the advancing / retreating direction S can be made larger than that on the advance side.
  • the cross-sectional area of the first intermediate slide portion 433 on the retracting side as viewed from the advance / retreat direction S among the plurality of slide portions is the first intermediate slide portion. It is set to be larger than the cross-sectional area viewed from the advancing / retreating direction S of the second intermediate slide part 434 on the advance side from 433. Thereby, compared with the structure with the same thickness of a some slide part, the fall of the rigidity of the advancing / retreating guide mechanism 430 can be suppressed.
  • first intermediate slide portion 433 and the second intermediate slide portion 434 are provided with arms 433f and 434f extending from the advancing and retreating direction S of the first intermediate slide portion 433 and the second intermediate slide portion 434 toward the meshing chain.
  • the arms 433f and 434f are provided with engaging portions 433g and 434g which are engaged with the meshing portion 440G and slidable in the forward / backward direction S with respect to the meshing portion 440G. Accordingly, the meshing portion 440G of the pair of meshing chains 440 and the actuated body 410 can be guided more stably, and the arms 433f and 434f are obstructed as the meshing portions 440G of the pair of meshing chains 440 retract. Without this, the advance / retreat guide mechanism 430 can be smoothly reduced.
  • the present invention is not limited to the above embodiment, and may be modified as follows.
  • the power of the advance / retreat operation device can be supplied from a drive motor or a lever or handle operated by a person.
  • the drive sprocket that transmits the power of the drive motor or the like to the meshing chain may be arranged one on each side of the pair of meshing chains, or one on one side.
  • the meshing chain may have a multi-row structure in which a plurality of inner link units composed of a pair of inner teeth plates in the chain width direction are connected in the chain width direction.
  • the meshing chain may be a meshing chain that does not include a bush, and is configured by connecting a large number of internal tooth plates and external tooth plates only with a connecting pin, or the drive sprocket is engaged with the bush or the roller loosely fitted with the bush. It may be driven together.
  • the same kind of plates facing each other are meshed together to be united, and each is meshed and branched off. Any shape may be used.
  • Meshing part L of a pair of meshing chains ... Space Ll between meshing part and advancing end slide part ... Distance L2 between 1st cylinder part and meshing part ... 4th cylinder part Between the meshing portion and the meshing portion S... Advance and retreat direction T... Parallel arrangement direction THI.

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Abstract

A forward-backward movement guide mechanism (130) has slide sections (131, 132, 133) which are arranged side by side in the side-by-side arrangement direction (T) and which can relatively slide in the forward-backward movement direction (S). In a state in which the forward-backward movement guide mechanism is extended in the forward-backward movement direction, a retracted end slide section (131) is relatively affixed to a base (120), and an advanced end slide section (132) is disposed closer to meshing chains (140) than the retracted end slide section (131) in the side-by-side arrangement direction (T), and is relatively affixed to a body (110) to be operated or is relatively affixed to the advanced side, in the forward-backward movement direction, of the meshing portion (140G) of the meshing chains (140) while being connected to the advanced side of the meshing portion (140G).

Description

噛合チェーン式進退作動装置Engagement chain type advance / retreat actuator
　本発明は、各種製造分野の製造設備、運輸分野の移送設備、医療福祉分野の介護設備、芸術分野の舞台設備などに用いて噛合チェーンの先端部を進退方向に沿って進退させる噛合チェーン式進退作動装置に関する。 The present invention is used for manufacturing equipment in various manufacturing fields, transport equipment in the transportation field, nursing care equipment in the medical and welfare field, stage equipment in the art field, etc. It relates to an actuating device.
　従来、被作動体へ動力を伝達して被作動体を進退させる一対の噛合チェーンと、被作動体の進退方向に沿って伸縮して、被作動体をべースに対して進退方向に沿ってガイドする進退ガイド機構とを備えた噛合チェーン式進退作動装置が知られている（例えば、特許文献１から特許文献３）。以下単に、進退作動装置と称する。 Conventionally, a pair of meshing chains that transmit power to the actuated body to move the actuated body back and forth, and expand and contract along the advancing / retreating direction of the actuated body, thereby moving the actuated body along the advancing / retreating direction with respect to the base BACKGROUND ART A meshing chain type advance / retreat operation device including an advance / retreat guide mechanism for guiding is known (for example, Patent Document 1 to Patent Document 3). Hereinafter, it is simply referred to as an advance / retreat operation device.
　特許文献１に記載された従来の第１態様における進退作動装置の進退ガイド機構は、Ｘ字状の揺動自在な複数のアームが進退方向に沿って連なって配置された、所謂、多段パンタグラフ構造を有している。そして、多段パンタグラフの進退方向の一端がべースに接続され、他端が被作動体としての昇降テーブルに接続されている。 The advance / retreat guide mechanism of the advance / retreat operation device according to the first aspect of the prior art described in Patent Document 1 has a so-called multistage pantograph structure in which a plurality of X-shaped swingable arms are arranged continuously in the advance / retreat direction. have. And one end of the advancing / retreating direction of the multistage pantograph is connected to the base, and the other end is connected to a lifting table as an actuated body.
　特許文献２に記載された従来の第２態様における進退作動装置の進退ガイド機構は、進退方向に沿って延設された一本の長尺なガイドポールと、噛合チェーンの先端部に取り付けられた被作動体としての昇降テーブルに設けられた一対のガイドローラとを有している。そして、一対のガイドローラが、ガイドポールを挟持しながら進退方向へ移動するように構成されている。 The advance / retreat guide mechanism of the advance / retreat operation device according to the second aspect of the prior art described in Patent Document 2 is attached to one long guide pole extending along the advance / retreat direction and the tip of the meshing chain. A pair of guide rollers provided on a lifting table as an actuated body. And a pair of guide roller is comprised so that it may move to an advance / retreat direction, pinching | interposing a guide pole.
　特許文献３に記載された従来の第３態様における進退作動装置の進退ガイド機構は、揺動自在な屈曲アームを有している。そして、屈曲アームの一端がべースに接続され、他端が被作動体としての昇降テーブルに接続されている。 The advance / retreat guide mechanism of the advance / retreat operation device in the conventional third aspect described in Patent Document 3 has a swingable bending arm. One end of the bending arm is connected to the base, and the other end is connected to a lifting table as an actuated body.
特開２００９－００１３７７号公報JP 2009-001377 A 特開２０１１－１１１３１４号公報JP 2011-111314 A 特開２０１２－００１３６０号公報JP 2012-001360 A
　ところが、従来の第１態様における進退ガイド機構は、多段パンタグラフ構造であるため、アームの揺動自在に接続された箇所が多く存在し、これらの箇所のガタによる影響が大きい。そのため、例えば、進退方向が水平方向である場合に、パンタグラフに負荷がかかってパンタグラフの進退方向の進出側に位置する部分がおじぎするように下方に垂れ下がって、被作動体を安定してガイドすることができないという問題があった。 However, since the advance / retreat guide mechanism in the conventional first aspect has a multi-stage pantograph structure, there are many places where the arms are swingably connected, and the influence of play at these places is large. Therefore, for example, when the advancing / retreating direction is a horizontal direction, the pantograph is hung down so that a portion of the pantograph located on the advancing side in the advancing / retreating direction bows down to stably guide the actuated body. There was a problem that I could not.
　従来の第２態様における進退ガイド機構は、一対のガイドローラがガイドポールを挟持しながら進退方向へ移動する構造である。そのため、ガイドローラの間の干渉などの不具合が生じて、被作動体を安定してガイドすることができないという問題や、ガイドポールを被作動体のストロークに応じて長尺にする必要があり、構造が大型化するという問題があった。 The conventional advance / retreat guide mechanism in the second aspect is a structure in which a pair of guide rollers move in the advance / retreat direction while holding the guide pole. Therefore, troubles such as interference between the guide rollers occur, the problem that the actuated body cannot be stably guided, or the guide pole needs to be elongated according to the stroke of the actuated object, There was a problem that the structure was enlarged.
　従来の第３態様における進退ガイド機構は、揺動自在な屈曲アームを有する構造である。そのため、アームの揺動自在に接続された箇所のガタによる影響が長尺なアームによって大きくなり、被作動体を安定してガイドすることができないという問題があった。 The conventional advance / retreat guide mechanism in the third aspect has a structure having a swingable bending arm. For this reason, there is a problem that the influence of the play at the pivotally connected portion of the arm is increased by the long arm, and the actuated body cannot be stably guided.
　そこで、アームの揺動自在に接続された箇所をなくすとともに、ガイドポールをなくすために、例えば、図９（Ａ）および図９（Ｂ）に示す進退作動装置７００の構成が考えられる。ここで、図９（Ａ）は、改良型の従来の進退作動装置７００の退避時を示す側面図であり、図９（Ｂ）は、進退作動装置７００の進出時を示す側面図である。 Therefore, in order to eliminate the pivotally connected portion of the arm and eliminate the guide pole, for example, a configuration of the advance / retreat operation device 700 shown in FIGS. 9A and 9B can be considered. Here, FIG. 9A is a side view showing when the improved conventional advance / retreat operation device 700 is retracted, and FIG. 9B is a side view showing the advance / retreat operation device 700 when it is advanced.
　図９（Ａ）および図９（Ｂ）に示すように、進退作動装置７００は、被作動体７１０の進退方向Ｓに沿って伸縮して被作動体７１０をベース７２０に対して進退方向Ｓに沿ってガイドする進退ガイド機構７３０と、図示しない駆動モータの動力を被作動体７１０へ伝達して被作動体７１０を進退させる一対の噛合チェーンとを有している。 9A and 9B, the advance / retreat operation device 700 expands and contracts along the advance / retreat direction S of the actuated body 710 and moves the actuated body 710 in the advance / retreat direction S with respect to the base 720. It has an advance / retreat guide mechanism 730 that guides along and a pair of meshing chains that transmit the power of a drive motor (not shown) to the actuated body 710 to advance and retract the actuated body 710.
　べース７２０は、一対の噛合チェーンの噛み外れ部分を収納するチェーン収納部７２１と、一対の噛合チェーンに駆動モータの動力を伝達する駆動スプロケット（図示せず）とを有している。 The base 720 includes a chain storage portion 721 that stores the disengaged portions of the pair of meshing chains, and a drive sprocket (not shown) that transmits the power of the drive motor to the pair of meshing chains.
　進退ガイド機構７３０は、所謂、筒状のテレスコピック構造を有し、第１筒部７３１、第２筒部７３２、第３筒部７３３、及び、第４筒部７３４を有している。第４筒部７３４は、第３筒部７３３の内部に出入りするようにスライド自在であり、第３筒部７３３は、第２筒部７３２の内部に出入りするようにスライド自在であり、第２筒部７３２は、第１筒部７３１の内部に出入りするようにスライド自在である。また、第１筒部７３１は、ベース７２０に対して相対的に固定されている。 The advance / retreat guide mechanism 730 has a so-called cylindrical telescopic structure, and includes a first cylinder part 731, a second cylinder part 732, a third cylinder part 733, and a fourth cylinder part 734. The fourth cylinder part 734 is slidable so as to enter and exit the inside of the third cylinder part 733, and the third cylinder part 733 is slidable so as to enter and exit the inside of the second cylinder part 732, The cylinder part 732 is slidable so as to enter and exit the first cylinder part 731. Further, the first cylinder portion 731 is fixed relatively to the base 720.
　図９（Ａ）に示すように、噛合チェーンの噛み合い部分７４０Ｇが進退方向に沿って右方へ退避した状態では、第１筒部７３１の内部に第２筒部７３２から第４筒部７３４が入り込むため、進退ガイド機構７３０がコンパクトになる。 As shown in FIG. 9A, in a state where the meshing portion 740G of the meshing chain is retracted to the right along the forward / backward direction, the second cylindrical portion 732 to the fourth cylindrical portion 734 are placed inside the first cylindrical portion 731. Since it enters, the advance / retreat guide mechanism 730 becomes compact.
　他方、図９（Ｂ）に示すように、噛合チェーンの噛み合い部分７４０Ｇが進退方向Ｓに沿って左方へ進出すると、第１筒部７３１、第２筒部７３２、第３筒部７３３、第４筒部７３４の順に並ぶようにして、進退ガイド機構７３０が進退方向Ｓに沿って伸長する。 On the other hand, as shown in FIG. 9B, when the meshing portion 740G of the meshing chain advances to the left along the advance / retreat direction S, the first cylinder part 731, the second cylinder part 732, the third cylinder part 733, The advance / retreat guide mechanism 730 extends along the advance / retreat direction S so that the four cylinder portions 734 are arranged in this order.
　しかしながら、進退ガイド機構７３０は筒状のテレスコピック構造を有するため、図９（Ａ）の位置から図９（Ｂ）の位置へ噛合チェーンの噛み合い部分７４０Ｇが移動すると、進退ガイド機構７３０と噛合チェーンの噛み合い部分７４０Ｇとの間隔が変化する。 However, since the advance / retreat guide mechanism 730 has a cylindrical telescopic structure, when the meshing portion 740G of the meshing chain moves from the position of FIG. 9A to the position of FIG. 9B, the advance / retreat guide mechanism 730 and the meshing chain The interval with the meshing portion 740G changes.
　具体的には、図９（Ａ）の状態では、進退ガイド機構７３０と噛み合い部分７４０Ｇとの間隔は、第１筒部７３１と噛み合い部分７４０Ｇとの間の間隔Ｌｌである。それに対し、図９（Ｂ）の状態では、進退ガイド機構７３０と噛み合い部分７４０Ｇとの間隔が、第４筒部７３４と噛み合い部分７４０Ｇとの間の間隔Ｌ２に変化する。 Specifically, in the state of FIG. 9A, the distance between the advance / retreat guide mechanism 730 and the meshing part 740G is the distance Ll between the first cylindrical part 731 and the meshing part 740G. On the other hand, in the state of FIG. 9B, the interval between the advance / retreat guide mechanism 730 and the meshing portion 740G changes to the interval L2 between the fourth tube portion 734 and the meshing portion 740G.
　そのため、噛合チェーンの噛み合い部分７４０Ｇが搬送物などから負荷を受ける場合、その負荷に対する装置の耐荷重が変化して、噛合チェーンの噛み合い部分７４０Ｇおよび被作動体７１０を安定してガイドすることができないという問題がある。 Therefore, when the meshing portion 740G of the meshing chain receives a load from a conveyed product or the like, the load resistance of the device against the load changes, and the meshing portion 740G of the meshing chain and the actuated body 710 cannot be stably guided. There is a problem.
　本発明は、前述したような問題を解決するためになされたものであって、本発明の目的は、噛合チェーンの噛み合い部分および被作動体を安定してガイドする進退ガイド機構を有する噛合チェーン式進退作動装置を提供することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is a meshing chain type having a meshing portion of a meshing chain and an advance / retreat guide mechanism that stably guides an actuated body. The object is to provide an advancing / retracting device.
　本願の第１の態様における進退作動装置は、被作動体へ動力を伝達して被作動体を進退させる一対の噛合チェーンと、被作動体の進退方向に沿って伸縮して被作動体をべースに対して進退方向に沿ってガイドする進退ガイド機構とを備えたものである。前記進退ガイド機構は、並設方向に沿って並設され、かつ、前記進退方向に相対的にスライド自在な複数のスライド部を有し、該複数のスライド部の並設方向と前記進退方向とは交差し、前記スライド部は、前記並設方向に沿って互いに接触した状態で設けられている。前記進退方向に沿って進退ガイド機構が伸びた状態で、複数のスライド部のうち、進退方向の退避側に位置する退避端スライド部が、前記べースに対して相対的に固定されている。前記伸びた状態の進退ガイド機構における複数のスライド部のうち、進退方向の進出側に位置する進出端スライド部は、前記並設方向に沿って退避端スライド部よりも噛合チェーンに接近して配設されるとともに、前記被作動体または噛合チェーンの噛み合い部分の進退方向の進出端と接続されて、噛み合い部分の進退方向の進出端に対して相対的に固定されている。 The advancing / retreating device in the first aspect of the present application includes a pair of meshing chains that transmit power to the actuated body to advance and retract the actuated body, and extend and retract along the advancing / retreating direction of the actuated body. And a forward / backward guide mechanism for guiding the base along the forward / backward direction. The advance / retreat guide mechanism has a plurality of slide portions that are juxtaposed along the juxtaposed direction and are relatively slidable in the advance / retreat direction, and the juxtaposed direction of the plurality of slide portions and the advance / retreat direction Are crossed, and the slide portions are provided in contact with each other along the juxtaposed direction. With the advance / retreat guide mechanism extending along the advance / retreat direction, a retracting end slide portion located on the retract side in the advance / retreat direction is fixed relative to the base among the plurality of slide portions. . Of the plurality of slide portions in the extended advance / retreat guide mechanism, the advance end slide portion located on the advance side in the advance / retreat direction is arranged closer to the meshing chain than the retracting end slide portion along the parallel arrangement direction. And connected to the advancing end in the advancing / retreating direction of the meshed portion of the actuated body or the meshing chain, and fixed relative to the advancing end in the advancing / retreating direction of the meshing portion.
　ここで、「相対的に固定」という用語は、相対的に位置関係が変わらないように２つの物体が互いに固定されていることを意味し、一方の物体が他方の物体に対して直接的に固定されていてもよいし、間接的に固定されていてもよいことを意味している。 Here, the term “relatively fixed” means that two objects are fixed to each other so that the positional relationship does not change relatively, and one object is directly relative to the other object. It may be fixed or indirectly fixed.
　第１の態様によれば、被作動体が進退方向に沿って進退するストロークの全範囲で、進出端スライド部と噛合チェーンの噛み合い部分の進出側との間の間隔が常に同じになり、噛合チェーンの噛み合い部分の進出端部が搬送物などから受ける負荷に対する耐荷重がストロークの全範囲で常に一定となる。そのため、進退ガイド機構は噛合チェーンの噛み合い部分および被作動体を安定してガイドすることができる。 According to the first aspect, the distance between the advancing end slide part and the advancing side of the meshing part of the meshing chain is always the same in the entire range of the stroke in which the actuated body advances and retreats along the advancing and retreating direction. The load resistance with respect to the load that the advancing end portion of the meshing portion of the chain receives from a conveyed object or the like is always constant over the entire stroke range. Therefore, the advance / retreat guide mechanism can stably guide the meshing portion of the meshing chain and the actuated body.
　第２の態様では、前記複数のスライド部のうち、進退方向の退避側に位置する退避側スライド部の前記進退方向から視た断面積は、前記複数のスライド部のうち、前記退避側スライド部よりも進退方向の進出側に位置する進出側スライド部の前記進退方向から視た断面積より大きく設定されている。 In the second aspect, the retraction side slide portion of the retraction side slide portion located on the retreat side in the advance / retreat direction among the plurality of slide portions is the retraction side slide portion of the plurality of slide portions. The cross-sectional area of the advancing side slide portion located on the advancing side in the advancing / retreating direction is set larger than the cross-sectional area viewed from the advancing / retreating direction.
　一般に、噛合チェーンの噛み合い部分が進出した状態では、負荷が進出側よりも大きく作用する退避側での耐荷重が大きくなるが、第２の態様では、複数のスライド部の断面積が同じ構成と比べて、進退ガイド機構の剛性の低下を抑制することができる。 In general, in the state where the meshing portion of the meshing chain has advanced, the load resistance on the retreat side where the load acts more than the advancement side increases, but in the second aspect, the cross-sectional areas of the plurality of slide portions have the same configuration. In comparison, a decrease in rigidity of the advance / retreat guide mechanism can be suppressed.
　第３の態様では、前記複数のスライド部のうち、進退方向の退避側に位置する退避側スライド部は、前記複数のスライド部のうち、前記退避側スライド部よりも進退方向の進出側に位置する進出側スライド部の材質より剛性の高い材質で形成されている。 In the third aspect, the retraction side slide portion located on the retreat side in the advance / retreat direction among the plurality of slide portions is located closer to the advance side in the advance / retreat direction than the retreat side slide portion among the plurality of slide portions. It is made of a material having higher rigidity than the material of the advancing side slide portion.
　この場合、複数のスライド部の材質が同じ構成と比べて、進退ガイド機構の剛性の低下を抑制することができる。 In this case, it is possible to suppress a decrease in the rigidity of the advance / retreat guide mechanism as compared with the configuration in which the materials of the plurality of slide portions are the same.
　第４の態様では、前記複数のスライド部は３つ以上であって、前記退避端スライド部と前記進出端スライド部との間の中間スライド部を含み、該中間スライド部の進退方向における進出側から前記噛合チェーンに向かって延びたアームと、該アームの先端に設けられて、前記噛合チェーンの噛み合い部分に係合するとともに噛合チェーンの噛み合い部分に対して進退方向に沿ってスライド自在な係合部とを備えている。 In the fourth aspect, the number of the plurality of slide portions is three or more, including an intermediate slide portion between the retracting end slide portion and the advance end slide portion, and the advance side in the advance / retreat direction of the intermediate slide portion An arm extending toward the meshing chain, and an engagement provided at the tip of the arm, which engages with the meshing portion of the meshing chain and is slidable in the advancing and retreating direction with respect to the meshing portion of the meshing chain. Department.
　この場合、噛合チェーンの噛み合い部分が進出した状態でアームの係合部が噛合チェーンの噛み合い部分の中間部と係合するため、より安定して噛合チェーンの噛み合い部分および被作動体をガイドすることができる。さらに、噛合チェーンの噛み合い部分が退避する際には、中間スライド部のアームが進行方向の後方に位置した状態で、ベースの近傍に到達するため、噛合チェーンの噛み合い部分の退避に伴ってアームが邪魔になることがなく、進退ガイド機構はスムーズに縮小することができる。 In this case, since the engaging portion of the arm engages with the intermediate portion of the meshing portion of the meshing chain with the meshing portion of the meshing chain advanced, the meshing portion of the meshing chain and the actuated body can be guided more stably. Can do. Further, when the meshing portion of the meshing chain is retracted, the arm of the intermediate slide portion reaches the vicinity of the base in a state where the arm of the intermediate slide portion is located rearward in the traveling direction. The advancing / retreating guide mechanism can be smoothly reduced without obstruction.
本発明の第１実施形態に関し、進出時の進退作動装置を示す斜視図。The perspective view which shows the advance / retreat operation apparatus at the time of advance regarding the first embodiment of the present invention. （Ａ）は図１の進退作動装置に用いられる一対の噛合チェーンの分解斜視図、（Ｂ）は一対の噛合チェーンの斜視図。(A) is a disassembled perspective view of a pair of meshing chains used for the advance / retreat operation device of FIG. 1, and (B) is a perspective view of a pair of meshing chains. （Ａ）は図１の進退作動装置の退避時における正面図、（Ｂ）は図１の進退作動装置の退避時における側面図。(A) is a front view at the time of retreating of the advance / retreat operation device of FIG. 1, and (B) is a side view at the time of retraction of the advance / retreat operation device of FIG. 図１の進退作動装置の進出時における側面図。The side view at the time of advance of the advance / retreat operation device of FIG. 第２実施形態の進退作動装置を示す正面図。The front view which shows the advancing / retreating operation apparatus of 2nd Embodiment. 第３実施形態の進退作動装置を示す正面図。The front view which shows the advancing / retreating operation apparatus of 3rd Embodiment. （Ａ）は第４実施形態の退避時における進退作動装置の正面図、（Ｂ）は第４実施形態の退避時における進退作動装置の側面図。(A) is a front view of the advance / retreat operation device during retraction according to the fourth embodiment, and (B) is a side view of the advance / retreat operation device during retraction according to the fourth embodiment. 第４実施形態の進出時における進退作動装置を示す側面図。The side view which shows the advancing / retreating operation apparatus at the time of advancement of 4th Embodiment. （Ａ），（Ｂ）は改良型の従来の進退作動装置の退避時および進出時を示す側面図。(A), (B) is a side view which shows the time of retraction | saving of the improved conventional advance / retreat operation device, and the time of advance.
　以下に、本発明の第１実施形態である噛合チェーン式進退作動装置１００について、図１から図４に基づいて説明する。ここで、図１は、進出時の進退作動装置１００を示す斜視図であり、図２（Ａ）は、進退作動装置１００の一対の噛合チェーン１４０の一部の分解斜視図であり、図２（Ｂ）は、進退作動装置１００の一対の噛合チェーン１４０の斜視図である。図３（Ａ）は、退避時の進退作動装置１００の正面図であり、図３（Ｂ）は、図３（Ａ）中の符号３Ｂから視た側面図であり、図４は、図１中の符号４から視た側面図である。 Hereinafter, the meshing chain type advance / retreat operation device 100 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. Here, FIG. 1 is a perspective view showing the advance / retreat operation device 100 at the time of advancement, and FIG. 2 (A) is an exploded perspective view of a part of the pair of meshing chains 140 of the advance / retreat operation device 100. (B) is a perspective view of a pair of meshing chains 140 of the advance / retreat operation device 100. 3A is a front view of the advance / retreat operation device 100 during retraction, FIG. 3B is a side view as viewed from the reference numeral 3B in FIG. 3A, and FIG. It is the side view seen from the code 4 inside.
　進退作動装置１００は、図１から図４に示すように、一対の噛合チェーン１４０と、進退ガイド機構１３０とを備えている。一対の噛合チェーン１４０は、被作動体１１０へ駆動モータ（図示せず）の動力を伝達して被作動体１１０を進退させる。進退ガイド機構１３０は、被作動体１１０の進退方向Ｓに沿って伸縮して被作動体１１０をべース１２０に対して進退方向Ｓに沿ってガイドする。 As shown in FIGS. 1 to 4, the advance / retreat operation device 100 includes a pair of meshing chains 140 and an advance / retreat guide mechanism 130. The pair of meshing chains 140 transmits the power of a drive motor (not shown) to the actuated body 110 to advance and retract the actuated body 110. The advance / retreat guide mechanism 130 expands and contracts along the advance / retreat direction S of the operated body 110 to guide the operated body 110 along the advance / retreat direction S with respect to the base 120.
　駆動モータの動力はべース１２０内で駆動スプロケット（図示せず）を介して一対の噛合チェーン１４０に伝達され、一対の噛合チェーン１４０がべース１２０のチェーン収納部１２１に対して出し入れされ、被作動体１１０がべース１２０に対して進退方向Ｓに進退させられる。 The power of the drive motor is transmitted to the pair of meshing chains 140 in the base 120 via a drive sprocket (not shown), and the pair of meshing chains 140 is taken in and out of the chain storage part 121 of the base 120. The actuated body 110 is moved back and forth in the forward / backward direction S with respect to the base 120.
　これにより、例えば、進退方向Ｓが鉛直方向である場合には、被作動部１１０に載置した搬送物（図示せず）を進退方向Ｓに沿って移動させることができ、進退方向Ｓが水平方向である場合には、被作動体１１０と当接する搬送物を進退方向Ｓに沿って移動させることができる。 Thereby, for example, when the advancing / retreating direction S is a vertical direction, a transported object (not shown) placed on the operated part 110 can be moved along the advancing / retreating direction S, and the advancing / retreating direction S is horizontal. In the case of the direction, the conveyed product that comes into contact with the actuated body 110 can be moved along the forward / backward direction S.
　ここで、進退作動装置１００に使用される一対の噛合チェーン１４０について説明する。 Here, the pair of meshing chains 140 used in the advance / retreat operation device 100 will be described.
　図２（Ａ）および図２（Ｂ）に示すように、一対の噛合チェーン１４０は、第１噛合チェーン１４０Ａと第２噛合チェーン１４０Ｂとから構成されている。第１噛合チェーン１４０Ａは、それぞれ複数の内歯プレート１４１、外歯プレート１４２、ブシュ１４３、連結ピン１４４、及び、ローラ１４５から構成されている。 As shown in FIGS. 2A and 2B, the pair of meshing chains 140 includes a first meshing chain 140A and a second meshing chain 140B. The first meshing chain 140 </ b> A includes a plurality of internal tooth plates 141, an external tooth plate 142, a bush 143, a connecting pin 144, and a roller 145.
　各対の内歯プレート１４１は、チェーン幅方向Ｕに沿って離間して配置され、各内歯プレート１４１はチェーン長手方向の前後に配設されたブシュ孔を有している。各対の外歯プレート１４２は、各対の内歯プレート１４１の外側に配置され、各外歯プレート１４２はチェーン長手方向の前後に配設されたピン孔を有している。 Each pair of internal tooth plates 141 is spaced apart along the chain width direction U, and each internal tooth plate 141 has bushing holes disposed in the longitudinal direction of the chain. Each pair of external tooth plates 142 is disposed on the outside of each pair of internal tooth plates 141, and each external tooth plate 142 has pin holes arranged in the longitudinal direction of the chain.
　そして、ローラ１４５に回動自在に挿通されたブシュ１４３の両端が各対の内歯プレート１４１のブシュ孔に圧入されている。各連結ピン１４４はブシュ１４３に回動自在に挿通され、この連結ピン１４４が一対の外歯プレート１４２のピン孔に圧入されることにより、各対の内歯プレート１４１と各対の外歯プレート１４２とがチェーン長手方向に沿って連結されている。なお、本実施形態では、一対の内歯プレート１４１と一対の外歯プレート１４２とからなるユニットがチェーン幅方向Ｕで１列のユニットを構成しているが、２列以上であってもよいのは言うまでもない。 Then, both ends of the bush 143 inserted through the roller 145 so as to freely rotate are press-fitted into the bush holes of each pair of internal tooth plates 141. Each connecting pin 144 is rotatably inserted into the bushing 143, and the connecting pin 144 is press-fitted into the pin holes of the pair of external tooth plates 142, whereby each pair of internal tooth plates 141 and each pair of external tooth plates. 142 is connected along the longitudinal direction of the chain. In the present embodiment, the unit composed of the pair of internal tooth plates 141 and the pair of external tooth plates 142 constitutes one row of units in the chain width direction U, but may be two or more rows. Needless to say.
　図２（Ｂ）に示すように、一対の噛合チェーン１４０は互いに噛み合わされて一体化される噛み合い部分１４０Ｇと、噛み合いの外れた一対の噛み外れ部分１４０Ｈとを有する。各噛み外れ部分１４０Ｈは図１に示す収納部１２１にそれぞれ収納され、噛み合い部分１４０Ｇは収納部１２１から引き出されている。具体的には、駆動モータ（図示せず）が正転すると、駆動モータの動力が、図示しない駆動スプロケットを介して、一対の噛み外れ部分１４０Ｈを収納部１２１からそれぞれ引き出す。 As shown in FIG. 2B, the pair of meshing chains 140 has a meshing portion 140G meshed and integrated with each other, and a pair of meshing portions 140H disengaged. Each disengagement portion 140 </ b> H is housed in the housing portion 121 shown in FIG. 1, and the meshing portion 140 </ b> G is pulled out from the housing portion 121. Specifically, when a drive motor (not shown) rotates forward, the power of the drive motor pulls out the pair of disengagement portions 140H from the storage portion 121 via a drive sprocket (not shown).
　そして、噛み外れ部分１４０Ｈが動力を受けて移動しながら、ベース１２０内の図示しない二本のガイド溝によって順次互いに噛み合わされて一体化されることにより、噛み合い部分１４０Ｇを形成し、その噛み合い部分１４０Ｇが進退方向Ｓに沿って図４の左方へ進出する。 Then, while the disengagement portion 140H is moved by receiving power, the engagement portion 140G is sequentially engaged and integrated by two guide grooves (not shown) in the base 120, thereby forming an engagement portion 140G. The engagement portion 140G Advances along the forward / backward direction S to the left in FIG.
　他方、駆動モータが逆転すると、一対の噛合チェーン１４０の噛み合い部分１４０Ｇが動力を受けて進退方向Ｓに沿って退避しながら、ベース１２０内の図示しない一本のガイド溝の分岐によってその噛み合いを外され、噛み外れ部分１４０Ｈが２つのチェーン収納部１２１にそれぞれ収納される。 On the other hand, when the drive motor rotates in the reverse direction, the meshing portion 140G of the pair of meshing chains 140 receives power and retracts along the advance / retreat direction S, while the meshing is disengaged by branching a single guide groove (not shown) in the base 120. Then, the disengagement portion 140H is stored in the two chain storage portions 121, respectively.
　次に、本発明の進退作動装置１００の進退ガイド機構１３０について説明する。進退ガイド機構１３０は、進退方向Ｓに相対的にスライド自在な複数のスライド部として退避端スライド部１３１、中間スライド部１３３および進出端スライド部１３２を有している。 Next, the advance / retreat guide mechanism 130 of the advance / retreat operation device 100 of the present invention will be described. The advance / retreat guide mechanism 130 includes a retracting end slide portion 131, an intermediate slide portion 133, and an advancing end slide portion 132 as a plurality of slide portions that are relatively slidable in the advance / retreat direction S.
　これらの退避端スライド部１３１、中間スライド部１３３および進出端スライド部１３２の並設方向Ｔと進退方向Ｓとが交差し、退避端スライド部１３１、中間スライド部１３３および進出端スライド部１３２が、並設方向Ｔで隣り合う同士で接触した状態で設けられている。また、進退方向Ｓに進退ガイド機構１３０が伸びた状態で、複数のスライド部のうちの退避端スライド部１３１が、ペース１２０に対して相対的に固定されている。つまり、退避端スライド部１３１が、べース１２０に対して直接的または間接的に固定されている。 The side-by-side direction T and the advancing / retracting direction S of the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 intersect, and the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 are It is provided in a state of being in contact with each other in the juxtaposed direction T. Further, the retracting end slide portion 131 among the plurality of slide portions is fixed relative to the pace 120 in a state where the advance / retreat guide mechanism 130 extends in the advance / retreat direction S. That is, the retracting end slide portion 131 is fixed directly or indirectly to the base 120.
　さらに、進退方向Ｓに沿って進退ガイド機構１３０が伸びた状態で、複数のスライド部のうちの進出端スライド部１３２が、並設方向Ｔにおいて退避端スライド部１３１よりも一対の噛合チェーン１４０に接近して配設されている。また、進出端スライド部１３２は、被作動体１１０、または、一対の噛合チェーン１４０の噛み合い部分１４０Ｇの進出端部に接続され、噛み合い部分１４０Ｇの進出端に対して相対的に固定されている。 Further, in a state where the advance / retreat guide mechanism 130 extends along the advance / retreat direction S, the advance end slide portion 132 of the plurality of slide portions is connected to the pair of meshing chains 140 in the juxtaposed direction T rather than the retracted end slide portion 131. Closely arranged. The advancing end slide part 132 is connected to the advancing end part of the meshed portion 140G of the actuated body 110 or the pair of meshing chains 140, and is fixed relatively to the advancing end of the meshing part 140G.
　これにより、被作動体１１０が進退方向Ｓに沿って移動するストロークの全範囲で、進出端スライド部１３２と一対の噛合チェーン１４０の噛み合い部分１４０Ｇの進出端部との間が常に同じ間隔Ｌとなる。それにより、一対の噛合チェーン１４０の噛み合い部分１４０Ｇの進出端部が搬送物などから受ける負荷に対する耐荷重がストロークの全範囲で常に一定となる。 Thereby, in the whole range of the stroke which the to-be-operated body 110 moves along the advance / retreat direction S, the space | interval L is always the same between the advance end slide part 132 and the advance end part of the meshing part 140G of a pair of meshing chain 140. Become. As a result, the load resistance against the load that the advancing end portion of the meshing portion 140G of the pair of meshing chains 140 receives from the conveyed product is always constant over the entire stroke range.
　上記のように第１実施形態では、図１、図３（Ａ）、図３（Ｂ）および図４に示すように、退避端スライド部１３１、中間スライド部１３３、進出端スライド部１３２は、並設方向Ｔに沿い、噛合チェーン１４０へ向かって順に並んで配設されている。ここでは、進退方向Ｓを水平方向とし、並設方向Ｔを鉛直方向とされているが、それに代えて、進退方向Ｓを鉛直方向とし、並設方向Ｔを水平方向としてもよい。並設方向Ｔを鉛直方向とした場合、進退ガイド機構１３０が一対の噛合チェーン１４０の噛み合い部分１４０Ｇの下方に位置して、進退ガイド機構１３０が一対の噛合チェーン１４０の噛み合い部分１４０Ｇからの油受けとなる。 As described above, in the first embodiment, as shown in FIGS. 1, 3A, 3B, and 4, the retracting end slide portion 131, the intermediate slide portion 133, and the advanced end slide portion 132 are Along the juxtaposed direction T, they are arranged side by side toward the meshing chain 140. Here, the advancing / retreating direction S is the horizontal direction and the juxtaposed direction T is the vertical direction, but instead, the advancing / retreating direction S may be the vertical direction and the juxtaposed direction T may be the horizontal direction. When the juxtaposed direction T is a vertical direction, the advance / retreat guide mechanism 130 is positioned below the meshing portion 140G of the pair of meshing chains 140, and the advance / retreat guide mechanism 130 receives oil from the meshing portions 140G of the pair of meshing chains 140. It becomes.
　退避端スライド部１３１は、進退方向Ｓに沿って延設された突条レール部１３１ａと、進退方向Ｓの進出側に設けられた進出規制部１３１ｄと、進退方向Ｓの退避側に設けられた退避規制部１３１ｅとを有している。 The retracting end slide part 131 is provided on the protruding rail part 131a extending along the advancing / retreating direction S, the advancing restricting part 131d provided on the advancing side in the advancing / retreating direction S, and the retracting side in the advancing / retreating direction S. And an evacuation restricting portion 131e.
　また、中間スライド部１３３は、進退方向Ｓに沿って延設された突条レール部１３３ａと、退避端スライド部１３１の突条レール部１３１ａと摺動自在に係合する凹状溝部１３３ｂと、退避端スライド部１３１の進出規制部１３１ｄおよび退避規制部１３１ｅに当接可能な突起部１３３ｃと、進退方向Ｓの進出側に設けられた進出規制部１３３ｄと、進退方向Ｓの退避側に設けられた退避規制部１３３ｅとを有している。 Further, the intermediate slide portion 133 includes a protruding rail portion 133a extending along the advancing / retreating direction S, a concave groove portion 133b that slidably engages with the protruding rail portion 131a of the retracting end slide portion 131, and a retracting portion. The protrusion 133c that can come into contact with the advance restricting portion 131d and the retract restricting portion 131e of the end slide portion 131, the advance restricting portion 133d provided on the advance side in the advance / retreat direction S, and the retract side in the advance / retreat direction S. And an evacuation restricting portion 133e.
　さらに、進出端スライド部１３２は、中間スライド部１３３の突条レール部１３３ａと摺動自在に係合する凹状溝部１３２ｂと、中間スライド部１３３の進出規制部１３３ｄおよび退避規制部１３３ｅに当接可能な突起部１３２ｃとを有している。 Further, the advancing end slide portion 132 can come into contact with the concave groove portion 132b slidably engaged with the protruding rail portion 133a of the intermediate slide portion 133, and the advancing restriction portion 133d and the retraction restriction portion 133e of the intermediate slide portion 133. And a protruding portion 132c.
　例えば、進退方向Ｓから視た退避端スライド部１３１の突条レール部１３１ａの断面形状をＴ字形状に形成するとともに、進退方向Ｓから視た中間スライド部１３３の凹状溝部１３３ｂの断面形状を突条レール部１３１ａの断面Ｔ字形状の周囲に回り込む形状などに形成し、中間スライド部１３３の凹状溝部１３３ｂが退避端スライド部１３１の突条レール部１３１ａと係合するように構成してもよい。これにより、中間スライド部１３３と退避端スライド部１３１とが互いに離れる方向（Ｔ）への移動を規制しながら、進退方向Ｓへスライドさせることが可能となる。 For example, the cross-sectional shape of the protrusion rail portion 131a of the retracting end slide portion 131 viewed from the advancing / retreating direction S is formed in a T shape, and the cross-sectional shape of the concave groove portion 133b of the intermediate slide portion 133 viewed from the advancing / retreating direction S is projected. It may be formed in a shape that wraps around the T-shaped section of the strip rail portion 131a and the like, and the concave groove portion 133b of the intermediate slide portion 133 may be configured to engage with the projecting rail portion 131a of the retracting end slide portion 131. . Thus, the intermediate slide portion 133 and the retracting end slide portion 131 can be slid in the forward / backward direction S while restricting the movement in the direction (T) away from each other.
　同様に、進退方向Ｓから視た中間スライド部１３３の突条レール部１３３ａの断面形状をＴ字形状に形成するとともに、進退方向Ｓから視た進出端スライド部１３２の凹状溝部１３２ｂの断面形状を突条レール部１３３ａの断面Ｔ字形状の周囲に回り込む形状などに形成して、進出端スライド部１３２の凹状溝部１３２ｂが中間スライド部１３３の突条レール部１３３ａと係合するように構成してもよい。これにより、中間スライド部１３３と進出端スライド部１３２とが互いに離れる方向（Ｔ）への移動を規制しながら進退方向Ｓへスライドさせることが可能となる。 Similarly, the cross-sectional shape of the ridge rail portion 133a of the intermediate slide portion 133 viewed from the advancing / retreating direction S is formed in a T shape, and the cross-sectional shape of the concave groove 132b of the advancing end slide portion 132 viewed from the advancing / retreating direction S is formed. It is formed in a shape that wraps around the T-shaped cross section of the ridge rail portion 133a, and is configured such that the concave groove portion 132b of the advancing end slide portion 132 is engaged with the ridge rail portion 133a of the intermediate slide portion 133. Also good. Thereby, the intermediate slide part 133 and the advance end slide part 132 can be slid in the advance / retreat direction S while restricting the movement in the direction (T) away from each other.
　一対の噛合チェーン１４０の噛み合い部分１４０Ｇが退避移動して、進退ガイド機構１３０が進退方向Ｓに沿って縮んだ状態では、図３（Ｂ）に示すように、退避端スライド部１３１の退避規制部１３１ｅと、中間スライド部１３３の突起部１３３ｃとが当接している。同様に、中間スライド部１３３の退避規制部１３３ｅと、進出端スライド部１３２の突起部１３２ｃとが当接している。 In a state where the meshing portions 140G of the pair of meshing chains 140 are retracted and the advance / retreat guide mechanism 130 is contracted along the advance / retreat direction S, as shown in FIG. 131e and the protrusion 133c of the intermediate slide part 133 are in contact with each other. Similarly, the retraction restricting portion 133e of the intermediate slide portion 133 and the protruding portion 132c of the advancing end slide portion 132 are in contact with each other.
　この状態で、一対の噛合チェーン１４０の噛み合い部分１４０Ｇが進出して進退ガイド機構１３０が進退方向Ｓに沿って伸長する際、先ず、進出端スライド部１３２が、中間スライド部１３３に対して進退方向Ｓの進出側（図３（Ｂ）の左方）に相対的にスライドする。このとき、進出端スライド部１３２の突起部１３２ｃが、中間スライド部１３３の退避規制部１３３ｅから離間して中間スライド部１３３の進出規制部１３３ｄに接近する。 In this state, when the meshing portion 140G of the pair of meshing chains 140 advances and the advance / retreat guide mechanism 130 extends along the advance / retreat direction S, first, the advance end slide portion 132 moves forward and backward with respect to the intermediate slide portion 133. Slide relative to the advancing side of S (left side in FIG. 3B). At this time, the protrusion 132c of the advance end slide part 132 is separated from the retraction restricting part 133e of the intermediate slide part 133 and approaches the advance restricting part 133d of the intermediate slide part 133.
　そして、進出端スライド部１３２の突起部１３２ｃが中間スライド部１３３の進出規制部１３３ｄに当接すると、進出端スライド部１３２と中間スライド部１３３とが一体となって退避端スライド部１３１に対して相対的に進退方向Ｓに沿って進出側へスライドする。このとき、中間スライド部１３３の突起部１３３ｃが、退避端スライド部１３１の退避規制部１３１ｅから離間して退避端スライド部１３１の進出規制部１３１ｄに接近する。 When the protrusion 132c of the advance end slide portion 132 comes into contact with the advance restriction portion 133d of the intermediate slide portion 133, the advance end slide portion 132 and the intermediate slide portion 133 are integrated with respect to the retracting end slide portion 131. Relatively slide along the advance / retreat direction S toward the advance side. At this time, the protrusion 133c of the intermediate slide part 133 moves away from the retracting restriction part 131e of the retracting end slide part 131 and approaches the advance restricting part 131d of the retracting end slide part 131.
　そして、図４に示すように、中間スライド部１３３の突起部１３３ｃが、退避端スライド部１３１の進出規制部１３１ｄに当接する直前まで移動したところで、被作動体１１０のストロークに応じた移動が完了し、その位置で噛み合い部分１４０Ｇ、被作動体１１０及び進退ガイド機構１３０が停止する。 Then, as shown in FIG. 4, the movement according to the stroke of the actuated body 110 is completed when the projection 133 c of the intermediate slide part 133 moves until just before contacting the advancement restricting part 131 d of the retracting end slide part 131. At that position, the meshing portion 140G, the actuated body 110, and the advance / retreat guide mechanism 130 are stopped.
　上述したように、被作動体１１０が所定のストロークにわたって移動する間、進出端スライド部１３２と、一対の噛合チェーン１４０の噛み合い部分１４０Ｇの進出端部との間の間隔Ｌが常に一定となり、一対の噛合チェーン１４０の噛み合い部分１４ＯＧの進出端部が搬送物などから受ける負荷に対する耐荷重がストロークの全範囲で常に一定となる。 As described above, the distance L between the advancing end slide portion 132 and the advancing end portions of the meshing portions 140G of the pair of meshing chains 140 is always constant while the actuated body 110 moves over a predetermined stroke. The withstand load against the load that the advancing end portion of the meshing portion 14OG of the meshing chain 140 receives from the conveyed product or the like is always constant over the entire stroke range.
　他方、図４に示す状態から、一対の噛合チェーン１４０の噛み合い部分１４０Ｇが退避して進退ガイド機構１３０が進退方向Ｓに沿って縮む際、先ず、進出端スライド部１３２が、中間スライド部１３３に対して進退方向Ｓの退避側へ相対的にスライドする。このとき、進出端スライド部１３２の突起部１３２ｃが、中間スライド部１３３の進出規制部１３３ｄから離間して、中間スライド部１３３の退避規制部１３３ｅに接近する。 On the other hand, when the engagement portion 140G of the pair of engagement chains 140 retracts from the state shown in FIG. 4 and the advance / retreat guide mechanism 130 contracts along the advance / retreat direction S, first, the advance end slide portion 132 is moved to the intermediate slide portion 133. On the other hand, it slides relatively to the retracting side in the forward / backward direction S. At this time, the protrusion 132c of the advance end slide part 132 is separated from the advance restriction part 133d of the intermediate slide part 133 and approaches the retraction restriction part 133e of the intermediate slide part 133.
　そして、進出端スライド部１３２の突起部１３２ｃが中間スライド部１３３の退避規制部１３３ｅに当接すると、進出端スライド部１３２と中間スライド部１３３とが一体となって、退避端スライド部１３１に対して相対的に進退方向Ｓの退避側へスライドする。このとき、中間スライド部１３３の突起部１３３ｃが、退避端スライド部１３１の進出規制部１３１ｄからより一層離間して、退避端スライド部１３１の退避規制部１３ｌｅに接近する。 When the protrusion 132c of the advance end slide portion 132 comes into contact with the retraction restricting portion 133e of the intermediate slide portion 133, the advance end slide portion 132 and the intermediate slide portion 133 are integrated with respect to the retraction end slide portion 131. To slide relatively to the retracting side in the forward / backward direction S. At this time, the protrusion 133c of the intermediate slide part 133 is further separated from the advance restricting part 131d of the retracting end slide part 131 and approaches the retracting restricting part 13le of the retracting end slide part 131.
　そして、図３（Ｂ）に示すように、中間スライド部１３３の突起部１３３ｃが退避端スライド部１３１の退避規制部１３１ｅに当接する直前に被作動体１１０のストロークに応じた移動が完了し、その位置で中間スライド部１３３及び進出スライド部１３１が停止する。 Then, as shown in FIG. 3B, the movement according to the stroke of the actuated body 110 is completed immediately before the protrusion 133c of the intermediate slide portion 133 abuts on the retraction restricting portion 131e of the retraction end slide portion 131, At that position, the intermediate slide portion 133 and the advance slide portion 131 stop.
　上記のように、第１実施形態の噛合チェーン式進退作動装置１００では、進退ガイド機構１３０が、進退方向Ｓに沿って相対的にスライド自在な複数のスライド部として退避端スライド部１３１、中間スライド部１３３および進出端スライド部１３２を有する。これらの退避端スライド部１３１、中間スライド部１３３および進出端スライド部１３２の並設方向Ｔは進退方向Ｓと交差している。退避端スライド部１３１、中間スライド部１３３および進出端スライド部１３２は、並設方向Ｔに沿って隣り合う同士で接触した状態にある。進退方向Ｓに沿って進退ガイド機構１３０が伸びた状態では、複数のスライド部のうち退避端スライド部１３１が、べース１２０に対して相対的に固定され、進出端スライド部１３２は退避端スライド部１３１よりも一対の噛合チェーン１４０に接近して配設され、かつ、被作動体１１０または一対の噛合チェーン１４０の噛み合い部分１４０Ｇの進退方向の進出端部に接続され、噛み合い部分１４０Ｇの進退方向の進出端部に対して相対的に固定されている。それにより、進退ガイド機構１３０は一対の噛合チェーン１４０の噛み合い部分１４０Ｇおよび被作動体１１０を安定してガイドすることができ、その効果は甚大である。
次に、本発明の第２実施形態における噛合チェーン式進退作動装置２００について、図５に基づいて説明する。 As described above, in the meshing chain type advance / retreat operation device 100 according to the first embodiment, the advance / retreat guide mechanism 130 includes the retracting end slide portion 131 and the intermediate slide as a plurality of slide portions relatively slidable along the advance / retreat direction S. Part 133 and advancing end slide part 132. The juxtaposed direction T of the retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 intersects the advancing / retreating direction S. The retracting end slide part 131, the intermediate slide part 133, and the advancing end slide part 132 are in contact with each other along the juxtaposed direction T. In the state where the advance / retreat guide mechanism 130 extends along the advance / retreat direction S, the retracting end slide portion 131 among the plurality of slide portions is fixed relative to the base 120, and the advance end slide portion 132 is the retracting end. The sliding portion 131 is disposed closer to the pair of meshing chains 140, and is connected to the advancing end portion in the advancing and retreating direction of the meshing portion 140G of the actuated body 110 or the pair of meshing chains 140. It is fixed relative to the advancing end of the direction. Accordingly, the advance / retreat guide mechanism 130 can stably guide the meshing portion 140G of the pair of meshing chains 140 and the actuated body 110, and the effect is enormous.
Next, an interlocking chain type advance / retreat operation device 200 according to a second embodiment of the present invention will be described with reference to FIG.
　第２実施形態の進退作動装置２００は、第１実施形態の進退作動装置１００の進退ガイド機構１３０のスライド部の数を４つに増やすとともに、各スライド部間で係合する突条レール部および凹状溝部を２組にしたものである。多くの要素については、第１実施形態の進退作動装置１００と共通するので、共通する事項については詳しい説明を省略し、下２桁が共通する２００番台の符号を付すのみとする。 The advance / retreat operation device 200 of the second embodiment increases the number of slide portions of the advance / retreat guide mechanism 130 of the advance / retreat operation device 100 of the first embodiment to four, and a ridge rail portion that engages between the slide portions, and Two sets of concave grooves are formed. Since many elements are common to the advance / retreat operation device 100 of the first embodiment, detailed description of common matters is omitted, and only the reference numerals in the 200s are shared with the last two digits.
　第２実施形態における進退作動装置２００の進退ガイド機構２３０は、図５に示すように、複数のスライド部として退避端スライド部２３１、第１中間スライド部２３３、第２中間スライド部２３４および進出端スライド部２３２を有している。このうち、退避端スライド部２３１は、進退方向Ｓに沿って延設された２つの突条レール部２３１ａを有している。 As shown in FIG. 5, the advance / retreat guide mechanism 230 of the advance / retreat operation device 200 in the second embodiment includes a retracting end slide portion 231, a first intermediate slide portion 233, a second intermediate slide portion 234, and an advancing end as a plurality of slide portions. A slide portion 232 is provided. Among these, the retracting end slide portion 231 has two projecting rail portions 231a extending along the advance / retreat direction S.
　第１中間スライド部２３３は、進退方向Ｓに沿って延設された２つの突条レール部２３３ａと、退避端スライド部２３１の２つの突条レール部２３１ａに摺動自在にそれぞれ係合する２つの凹状溝部２３３ｂとを有している。さらに、第２中間スライド部２３４は、進退方向Ｓに延設された２つの突条レール部２３４ａと、第１中間スライド部２３３の２つの突条レール部２３３ａと摺動自在にそれぞれ係合する２つの凹状構部２３４ｂとを有している。 The first intermediate slide portion 233 is slidably engaged with two protrusion rail portions 233a extending along the advance / retreat direction S and two protrusion rail portions 231a of the retracting end slide portion 231 2. Two concave grooves 233b. Further, the second intermediate slide portion 234 is slidably engaged with the two protrusion rail portions 234a extending in the advance / retreat direction S and the two protrusion rail portions 233a of the first intermediate slide portion 233, respectively. And two concave structures 234b.
　進出端スライド部２３２は、第２中間スライド部２３４の２つの突条レール部２３４ａに摺動自在にそれぞれ係合する２つの凹状溝部２３２ｂを有している。これにより、各スライド部間の係合箇所が増えて進退方向Ｓに伸びたときの進退ガイド機構２３０の剛性が高まる。
次に、第３実施形態における進退作動装置３００について、図６に基づいて説明する。 The advancing end slide portion 232 has two concave groove portions 232b that slidably engage with the two protruding rail portions 234a of the second intermediate slide portion 234, respectively. This increases the rigidity of the advance / retreat guide mechanism 230 when the number of engagement portions between the slide portions increases and extends in the advance / retreat direction S.
Next, the advance / retreat operation device 300 according to the third embodiment will be described with reference to FIG.
　第３実施形態における進退作動装置３００は、第１実施形態の進退作動装置１００の進退ガイド機構１３０のスライド部の数を４つに増やすとともに、べース１２０に対する各スライド部の並設方向Ｔを変更したものである。多くの要素については、第１実施形態の進退作動装置１００と共通するので、共通する事項については詳しい説明を省略し、下２桁が共通する３００番台の符号を付すのみとする。 The advance / retreat operation device 300 according to the third embodiment increases the number of slide portions of the advance / retreat guide mechanism 130 of the advance / retreat operation device 100 according to the first embodiment to four, and the juxtaposed direction T of the slide portions with respect to the base 120. Is a change. Since many elements are common to the advance / retreat operation device 100 of the first embodiment, detailed description of common matters is omitted, and only the reference numbers in the 300 series having the last two digits are attached.
　第３実施形態における進退作動装置３００の進退ガイド機構３３０は、図６に示すように、複数のスライド部として退避端スライド部３３１、第１中間スライド部３３３、第２中間スライド部３３４および進出端スライド部３３２を有している。さらに、退避端スライド部３３１、第１中間スライド部３３３、第２中間スライド部３３４および進出端スライド部３３２は、並設方向Ｔに沿って互いに接触した状態で配設されている。 As shown in FIG. 6, the advance / retreat guide mechanism 330 of the advance / retreat operation device 300 according to the third embodiment includes a retract end slide portion 331, a first intermediate slide portion 333, a second intermediate slide portion 334, and an advance end as a plurality of slide portions. A slide portion 332 is provided. Further, the retracting end slide portion 331, the first intermediate slide portion 333, the second intermediate slide portion 334, and the advance end slide portion 332 are arranged in contact with each other along the juxtaposed direction T.
　第３実施形態では、被作動体３１０の進退方向Ｓを水平方向に設定し、並設方向Ｔも水平方向に設定しているが、それに代えて、被作動体３１０の進退方向Ｓを鉛直方向とし、並設方向Ｔを水平方向としてもよい。 In the third embodiment, the advancing / retreating direction S of the actuated bodies 310 is set to the horizontal direction, and the juxtaposed direction T is also set to the horizontal direction, but instead, the advancing / retreating direction S of the actuated bodies 310 is set to the vertical direction. The juxtaposed direction T may be the horizontal direction.
　つまり、退避端スライド部３３１、第１中間スライド部３３３、第２中間スライド部３３４および進出端スライド部３３２は、並設方向Ｔに並んで互いに接触した状態で配設されていれば、上述した第１実施形態と同様の作用効果を得ることができる。 That is, if the retracting end slide portion 331, the first intermediate slide portion 333, the second intermediate slide portion 334, and the advance end slide portion 332 are arranged in a state of being in contact with each other in the juxtaposed direction T, the above-described case is described. The same effect as the first embodiment can be obtained.
　続いて、本発明の第４実施形態における噛合チェーン式進退作動装置４００について、図７（Ａ），（Ｂ）および図８に基づいて説明する。ここで、図７（Ａ）は退避時における進退作動装置４００の正面図であり、図７（Ｂ）は図７（Ａ）に示す符号７Ｂから視た側面図であり、図８は、進出時における進退作動装置４００を示す側面図である。 Subsequently, an interlocking chain type advance / retreat operation device 400 according to a fourth embodiment of the present invention will be described with reference to FIGS. 7 (A), 7 (B) and FIG. Here, FIG. 7A is a front view of the advance / retreat operation device 400 at the time of retraction, FIG. 7B is a side view seen from the reference numeral 7B shown in FIG. 7A, and FIG. It is a side view which shows the advance / retreat operation device 400 at the time.
　第４実施形態の進退作動装置４００は、第１実施形態の進退作動装置１００における進退ガイド機構１３０のスライド部の数を４つに増やすとともに、進退方向Ｓから見た各スライド部の断面積を変更し、中間のスライド部に一対の噛合チェーン１４０の噛み合い部分１４０Ｇと係合するアーム４３３ｆ、４３４ｆを形成したものである。第４実施形態の進退作動装置１００の多くの要素について、第１実施形態の進退作動装置１００と共通するので、共通する事項については詳しい説明を省略し、下２桁が共通する４００番台の符号を付すのみとする。 The advance / retreat operation device 400 of the fourth embodiment increases the number of slide portions of the advance / retreat guide mechanism 130 in the advance / retreat operation mechanism 100 of the first embodiment to four, and the cross-sectional area of each slide portion viewed from the advance / retreat direction S is increased. The arms 433f and 434f that are engaged with the meshing portions 140G of the pair of meshing chains 140 are formed in the middle slide portion. Since many elements of the advance / retreat operation device 100 of the fourth embodiment are common to the advance / retreat operation device 100 of the first embodiment, detailed description of common items is omitted, and reference numerals in the 400s are common to the last two digits. It is only attached.
　進退作動装置４００の進退ガイド機構４３０は、図７および図８に示すように、複数のスライド部として退避端スライド部４３１、第１中間スライド部４３３、第２中間スライド部４３４および進出端スライド部４３２を有している。 As shown in FIGS. 7 and 8, the advance / retreat guide mechanism 430 of the advance / retreat operation device 400 includes a retract end slide portion 431, a first intermediate slide portion 433, a second intermediate slide portion 434, and an advance end slide portion as a plurality of slide portions. 432.
　さらに、複数のスライド部のうち、第１中間スライド部４３３は、進退方向Ｓの退避側に位置する退避側スライド部を構成している。第２中間スライド部４３４は第１中間スライド部４３３より進退方向Ｓの進出側に位置する進出側スライド部を構成している。第１中間スライド部４３３の進退方向Ｓから視た断面積は、第２中間スライド部４３４の進退方向Ｓから視た断面積より大きく設定されている。これにより、一対の噛合チェーン４４０の噛み合い部分４４０Ｇが進出した状態で、負荷が進出側よりも大きく作用する退避側において、進退作動装置４００の耐荷重が大きくなる。 Further, among the plurality of slide portions, the first intermediate slide portion 433 constitutes a retraction side slide portion located on the retreat side in the advance / retreat direction S. The second intermediate slide part 434 constitutes an advance side slide part located on the advance side in the advance / retreat direction S from the first intermediate slide part 433. The cross-sectional area of the first intermediate slide part 433 viewed from the advance / retreat direction S is set larger than the cross-sectional area of the second intermediate slide part 434 viewed from the advance / retreat direction S. As a result, the load resistance of the advancing / retracting operation device 400 increases on the retract side where the load acts more than the advance side in the state where the meshing portion 440G of the pair of mesh chains 440 has advanced.
　第４実施形態では、一例として、第１中間スライド部４３３の基部における並設方向Ｔの厚みＴＨ２が、第２中間スライド部４３４の基部における並設方向Ｔの厚みＴＨＩより厚く設定されている分だけ、第１中間スライド部４３３の進退方向Ｓから視た断面積が、第２中間スライド部４３４の進退方向Ｓから視た断面積より大きく設定されている。なお、厚みだけでなく幅を変えて断面積を大きくしてもよいのは勿論である。 In the fourth embodiment, as an example, the thickness TH2 in the juxtaposed direction T at the base of the first intermediate slide part 433 is set to be thicker than the thickness THI in the juxtaposed direction T at the base of the second intermediate slide part 434. Therefore, the sectional area of the first intermediate slide part 433 viewed from the advancing / retreating direction S is set larger than the sectional area of the second intermediate slide part 434 viewed from the advancing / retreating direction S. Of course, not only the thickness but also the width may be changed to increase the cross-sectional area.
　また、退避側スライド部としての第１中間スライド部４３３は、進出側スライド部としての第２中間スライド部４３４の材質より剛性の高い材質で形成されている。これにより、一対の噛合チェーン４４０の噛み合い部分４４０Ｇが進出した状態で、負荷が進出側よりも大きく作用する退避側において、進退作動装置４００の耐荷重が大きくなる。第４実施形態では、一例として、第１中間スライド部４３３の材質は鋼材であり、第２中間スライド部４３４の材質はアルミニウムである。 Further, the first intermediate slide part 433 as the retracting side slide part is formed of a material having higher rigidity than the material of the second intermediate slide part 434 as the advance side slide part. As a result, the load resistance of the advancing / retracting operation device 400 increases on the retract side where the load acts more than the advance side in the state where the meshing portion 440G of the pair of mesh chains 440 has advanced. In the fourth embodiment, as an example, the material of the first intermediate slide part 433 is steel, and the material of the second intermediate slide part 434 is aluminum.
　また、第４実施形態の進退作動装置４００は、３つ以上のスライド部（実際には４つ）を備えている。退避端スライド部４３１と進出端スライド部４３２との間の第１中間スライド部４３３及び第２中間スライド部４３４は、第１中間スライド部４３３及び第２中間スライド部４３４における進出側から噛合チェーン４４０に向かってそれぞれ延びるアーム４３３ｆ、４３４ｆと、各アーム４３３ｆ、４３４ｆの先端に設けられて一対の噛合チェーン４４０の噛み合い部分４４０Ｇに係合するとともに、噛み合い部分４４０Ｇに対して進退方向Ｓに沿ってスライド自在な係合部４３３ｇ、４３４ｇとを備えている。 Further, the advance / retreat operation device 400 of the fourth embodiment includes three or more slide portions (actually four). The first intermediate slide portion 433 and the second intermediate slide portion 434 between the retracting end slide portion 431 and the advance end slide portion 432 are engaged chain 440 from the advance side in the first intermediate slide portion 433 and the second intermediate slide portion 434. Arms 433f, 434f extending toward the front and engaging ends 440G of the pair of meshing chains 440 provided at the tips of the arms 433f, 434f, and sliding along the forward / backward direction S with respect to the meshing portions 440G. Freely engaging portions 433g and 434g are provided.
　これにより、一対の噛合チェーン４４０の噛み合い部分４４０Ｇが進出した状態で、アーム４３３ｆ、４３４ｆの係合部４３３ｇ、４３４ｇが一対の噛合チェーン４４０の噛み合い部分４４０Ｇの中間部に係合する。 Thus, the engagement portions 433g and 434g of the arms 433f and 434f are engaged with the intermediate portions of the engagement portions 440G of the pair of engagement chains 440 in a state where the engagement portions 440G of the pair of engagement chains 440 have advanced.
　さらに、一対の噛合チェーン４４０の噛み合い部分４４０Ｇが退避する際には、第１中間スライド部４３３のアーム４３３ｆおよび第２中間スライド部４３４のアーム４３４ｆが、進行方向の後方に位置した状態で、べース４２０の近傍に到達する。従って、アーム４３３ｆ、４３４ｆが邪魔になることなく、進退ガイド機構１３０がスムーズに縮小する。 Furthermore, when the meshing portion 440G of the pair of meshing chains 440 is retracted, the arm 433f of the first intermediate slide portion 433 and the arm 434f of the second intermediate slide portion 434 are positioned rearward in the traveling direction. To the vicinity of the source 420. Therefore, the advance / retreat guide mechanism 130 is smoothly reduced without the arms 433f, 434f getting in the way.
　なお、第１中間スライド部４３３の係合部４３３ｇは、外歯プレート１４１の外側面から外側へ突出した連結ピン１４４の端部に対して、進退方向Ｓに沿ってスライド自在に係合する凹部を有する。それにより、進退方向Ｓおよび並設方向Ｔと直交する方向への相対的な係合部４３３ｇの移動を規制することができる。 The engaging portion 433g of the first intermediate slide portion 433 is a recess that is slidably engaged along the forward / backward direction S with respect to the end portion of the connecting pin 144 protruding outward from the outer surface of the external tooth plate 141. Have Thereby, the relative movement of the engaging portion 433g in the direction orthogonal to the advancing / retreating direction S and the juxtaposed direction T can be restricted.
　第２中間スライド部４３４は、第２中間スライド部４３４における進出側で、かつ、第１中間スライド部４３３のアーム４３３ｆよりも進出側において、第２中間スライド部４３４から噛合チェーンに向かって延びたアーム４３４ｆと、アーム４３４ｆの先端に形成されて一対の噛合チェーン４４０の噛み合い部分４４０Ｇと係合するとともに進退方向Ｓに沿ってスライド自在な係合部４３４９とを備えている。 The second intermediate slide portion 434 extends from the second intermediate slide portion 434 toward the meshing chain on the advance side of the second intermediate slide portion 434 and on the advance side of the arm 433f of the first intermediate slide portion 433. The arm 434f includes an arm 434f and an engaging portion 4349 that is formed at the tip of the arm 434f and engages with a meshing portion 440G of the pair of meshing chains 440 and is slidable along the forward / backward direction S.
　第２中間スライド部４３４の係合部４３４ｇは、第１中間スライド部４３３のアーム４３３ｆの係合部４３３ｇよりも進出側において一対の噛合チェーン４４０の噛み合い部分４４０Ｇと係合して、一対の噛合チェーン４４０の噛み合い部分４４０Ｇに対して並設方向Ｔへの相対的な移動が規制されている。 The engagement portion 434g of the second intermediate slide portion 434 engages with the meshing portion 440G of the pair of meshing chains 440 on the advancing side with respect to the engagement portion 433g of the arm 433f of the first intermediate slide portion 433, and the pair of meshing The relative movement in the juxtaposed direction T with respect to the meshing portion 440G of the chain 440 is restricted.
　第１実施形態と同様に、退避端スライド部４３１は、進出規制部４３１ｄと、退避規制部４３１ｅとを有している。第１中間スライド部４３３は、突起部４３３ｃと、進出規制部４３３ｄと、退避規制部４３３ｅとを有している。同様に、第２中間スライド部４３４は、突起部４３４ｃと、進出規制部４３４ｄと、退避規制部４３４ｅとを有している。さらに、進出端スライド部４３２は、突起部４３２ｃを有している。 As in the first embodiment, the retracting end slide portion 431 includes an advance restricting portion 431d and an retract restricting portion 431e. The first intermediate slide part 433 includes a protrusion part 433c, an advance restriction part 433d, and a retraction restriction part 433e. Similarly, the second intermediate slide portion 434 includes a protrusion 434c, an advance restriction portion 434d, and a retraction restriction portion 434e. Furthermore, the advancing end slide portion 432 has a protrusion 432c.
　また、例えば、退避側での凹状構部４３３ｂと突条レール部４３１ａとの係合箇所に回動自在なコロを設け、進出側での凹状溝部４３４ｂと突条レール部４３３ａとの係合箇所に回動自在なボールを設けるのが望ましい。コロはボールより耐荷重が大きいため、進退方向Ｓにおける退避側での耐荷重を進出側より大きくすることができる。 Further, for example, a rotatable roller is provided at an engagement portion between the concave structure portion 433b and the ridge rail portion 431a on the retreat side, and an engagement portion between the concave groove portion 434b and the ridge rail portion 433a on the advance side. It is desirable to provide a rotatable ball on the surface. Since the roller has a greater load resistance than the ball, the load resistance on the retract side in the advancing / retreating direction S can be made larger than that on the advance side.
　このようにして得られた第４実施形態における進退作動装置４００では、複数のスライド部のうち、退避側における第１中間スライド部４３３の進退方向Ｓから視た断面積が、第１中間スライド部４３３より進出側における第２中間スライド部４３４の進退方向Ｓから視た断面積より大きく設定されている。それにより、複数のスライド部の厚みが同じ構成と比べて、進退ガイド機構４３０の剛性の低下を抑制できる。 In the advance / retreat operation device 400 according to the fourth embodiment obtained in this way, the cross-sectional area of the first intermediate slide portion 433 on the retracting side as viewed from the advance / retreat direction S among the plurality of slide portions is the first intermediate slide portion. It is set to be larger than the cross-sectional area viewed from the advancing / retreating direction S of the second intermediate slide part 434 on the advance side from 433. Thereby, compared with the structure with the same thickness of a some slide part, the fall of the rigidity of the advancing / retreating guide mechanism 430 can be suppressed.
　さらに、第１中間スライド部４３３及び第２中間スライド部４３４が、第１中間スライド部４３３及び第２中間スライド部４３４の進退方向Ｓの進出側から噛合チェーンに向かって延びたアーム４３３ｆ、４３４ｆを備え、アーム４３３ｆ、４３４ｆの先端には、噛み合い部分４４０Ｇと係合するとともに、噛み合い部分４４０Ｇに対して進退方向Ｓにスライド自在な係合部４３３ｇ、４３４ｇを備えている。それにより、より安定して一対の噛合チェーン４４０の噛み合い部分４４０Ｇおよび被作動体４１０をガイドすることができるとともに、一対の噛合チェーン４４０の噛み合い部分４４０Ｇの退避移動に伴ってアーム４３３ｆ、４３４ｆが邪魔することなく進退ガイド機構４３０はスムーズに縮小することができる。 Furthermore, the first intermediate slide portion 433 and the second intermediate slide portion 434 are provided with arms 433f and 434f extending from the advancing and retreating direction S of the first intermediate slide portion 433 and the second intermediate slide portion 434 toward the meshing chain. The arms 433f and 434f are provided with engaging portions 433g and 434g which are engaged with the meshing portion 440G and slidable in the forward / backward direction S with respect to the meshing portion 440G. Accordingly, the meshing portion 440G of the pair of meshing chains 440 and the actuated body 410 can be guided more stably, and the arms 433f and 434f are obstructed as the meshing portions 440G of the pair of meshing chains 440 retract. Without this, the advance / retreat guide mechanism 430 can be smoothly reduced.
　本発明は、上記の実施形態に限定されるものではなく、以下のように変更しても良い。 The present invention is not limited to the above embodiment, and may be modified as follows.
　進退作動装置の動力は、駆動モータ、あるいは、人が操作するレバーやハンドルから供給可能である。 The power of the advance / retreat operation device can be supplied from a drive motor or a lever or handle operated by a person.
　駆動モータなどの動力を噛合チェーンに伝達する駆動スプロケットは、一対の噛合チェーンの両側に１つずつ配設してもよいし、片側に１つ配設してもよい。また、噛合チェーンは、チェーン幅方向の一対の内歯プレートからなる内リンクユニットを、チェーン幅方向に複数列接続した多列構造を有していてもよい。さらに、噛合チェーンは、ブシュを備えず、連結ピンのみで内歯プレート及び外歯プレートを多数連結して構成された噛合チェーンでもよいし、ブシュ或いはブシュに遊嵌されたローラに駆動スプロケットを係合させて駆動されるものであってもよい。 The drive sprocket that transmits the power of the drive motor or the like to the meshing chain may be arranged one on each side of the pair of meshing chains, or one on one side. Further, the meshing chain may have a multi-row structure in which a plurality of inner link units composed of a pair of inner teeth plates in the chain width direction are connected in the chain width direction. Further, the meshing chain may be a meshing chain that does not include a bush, and is configured by connecting a large number of internal tooth plates and external tooth plates only with a connecting pin, or the drive sprocket is engaged with the bush or the roller loosely fitted with the bush. It may be driven together.
　また、噛合チェーンの内歯プレート及び外歯プレートなどのプレートの具体的な形状については、相互に対向する同種のプレート同士をそれぞれ噛み合せて一体とするとともに、それぞれ噛み外されて分岐するものであれば、如何なる形状を呈するものであってもよい。 In addition, regarding the specific shapes of the inner tooth plate and the outer tooth plate of the meshing chain, the same kind of plates facing each other are meshed together to be united, and each is meshed and branched off. Any shape may be used.
１００、２００、３００、４００…進退作動装置
１１０、２１０、３１０、４１０…被作動体
１２０、２２０、３２０、４２０…べース
１２１、２２１、３２１、４２１…チェーン収納部
１３０、２３０、３３０、４３０…進退ガイド機構
１３１、２３１、３３１、４３１…退避端スライド部
１３１ａ、２３１ａ、３３１ａ、４３１ａ…突条レール部
１３１ｄ、４３１ｄ…進出規制部
１３１ｅ、４３１ｅ…退避規制部
１３２、２３２、３３２、４３２…進出端スライド部
１３２ｂ、２３２ｂ、３３２ｂ、４３２ｂ…凹状溝部
１３２ｃ、４３２ｃ…突起部
１３３、２３３、３３３、４３３…（第１）中間スライド部
１３３ａ、２３３ａ、３３３ａ、４３３ａ…突条レール部
１３３ｂ、２３３ｂ、３３３ｂ、４３３ｂ…凹状溝部
１３３ｃ、４３３ｃ…突起部
１３３ｄ、４３３ｄ…進出規制部
１３３ｅ、４３３ｅ…退避規制部
４３３ｆ…アーム
４３３ｇ…係合部
２３４、３３４、４３４…第２中間スライド部
２３４ａ、３３４ａ、４３４ａ…突条レール部
２３４ｂ、３３４ｂ、４３４ｂ…凹状溝部
４３４ｃ…突起部
４３４ｄ…進出規制部
４３４ｅ…退避規制部
４３４ｆ…アーム
４３４９…係合部
１４０、４４０…一対の噛合チェーン
１４０Ａ…第１噛合チェーン
１４０Ｂ…第２噛合チェーン
１４０Ｇ、４４０Ｇ…噛み合い部分
１４０Ｈ…噛み外れ部分
１４１…内歯プレート
１４２…外歯プレート
１４３…ブシュ
１４４…連結ピン
１４５…ローラ
７００…進退作動装置
７１０…被作動体
７２０…べース
７２１…チェーン収納部
７３０…進退ガイド機構
７３１…第１筒部
７３２…第２筒部
７３３…第３筒部
７３４…第４筒部
７４０Ｇ…一対の噛合チェーンの噛み合い部分
Ｌ…噛み合い部分と進出端スライド部との間隔
Ｌｌ…第１筒部と噛み合い部分との間隔
Ｌ２…第４筒部と噛み合い部分との間隔
Ｓ…進退方向
Ｔ…並設方向
ＴＨＩ…（進出側スライド部の）厚み
ＴＨＺ…（退避側スライド部の）厚み
Ｕ…チェーン幅方向 100, 200, 300, 400 ... advance / retreat operation devices 110, 210, 310, 410 ... actuated bodies 120, 220, 320, 420 ... bases 121, 221, 321, 421 ... chain storage portions 130, 230, 330, 430 ... Advance / retreat guide mechanism 131, 231, 331, 431 ... Retraction end slide part 131 a, 231 a, 331 a, 431 a ... Projection rail part 131 d, 431 d ... Advance restriction part 131 e, 431 e ... Retraction restriction part 132, 232, 332, 432 ... advanced end slide parts 132b, 232b, 332b, 432b ... concave groove parts 132c, 432c ... projection parts 133, 233, 333, 433 ... (first) intermediate slide parts 133a, 233a, 333a, 433a ... projecting rail parts 133b, 233b, 333b, 433b ... concave grooves 133c, 433 ... protruding parts 133d, 433d ... advance restricting parts 133e, 433e ... retraction restricting parts 433f ... arms 433g ... engaging parts 234, 334, 434 ... second intermediate slide parts 234a, 334a, 434a ... protruding rail parts 234b, 334b, 434b ... concave groove portion 434c ... projection portion 434d ... advance restriction portion 434e ... retraction restriction portion 434f ... arm 4349 ... engagement portion 140, 440 ... pair of meshing chains 140A ... first meshing chain 140B ... second meshing chain 140G, 440G ... Engagement portion 140H ... Intermeshing portion 141 ... Internal tooth plate 142 ... External tooth plate 143 ... Bush 144 ... Connection pin 145 ... Roller 700 ... Advance / retreat operation device 710 ... Actuated body 720 ... Base 721 ... Chain storage portion 730 ... Advance / retreat Guide mechanism 731 ... 1st cylinder part 732 ... 2nd cylinder part 73 ... 3rd cylinder part 734 ... 4th cylinder part 740G ... Meshing part L of a pair of meshing chains ... Space Ll between meshing part and advancing end slide part ... Distance L2 between 1st cylinder part and meshing part ... 4th cylinder part Between the meshing portion and the meshing portion S... Advance and retreat direction T... Parallel arrangement direction THI.

Claims (4)

  1. 　被作動体へ動力を伝達して被作動体を進退させる一対の噛合チェーンと、被作動体の進退方向に沿って伸縮して被作動体をべースに対して進退方向に沿ってガイドする進退ガイド機構とを備えた噛合チェーン式進退作動装置において、
    　前記進退ガイド機構は、並設方向に沿って並設され、かつ、前記進退方向に相対的にスライド自在な複数のスライド部を有し、該複数のスライド部の並設方向と前記進退方向とは交差し、前記スライド部は、前記並設方向に沿って互いに接触した状態で設けられ、
    　前記進退方向に沿って進退ガイド機構の伸びた状態で、複数のスライド部のうち、進退方向の退避側に位置する退避端スライド部が、前記べースに対して相対的に固定され、
    　前記伸びた状態の進退ガイド機構における複数のスライド部のうち、進退方向の進出側に位置する進出端スライド部は、前記並設方向に沿って退避端スライド部よりも噛合チェーンに接近して配設されるとともに、前記被作動体または噛合チェーンの噛み合い部分の進退方向の進出端と接続されて、噛み合い部分の進退方向の進出端に対して相対的に固定されていることを特徴とする噛合チェーン式進退作動装置。     A pair of meshing chains that transmit power to the actuated body to move the actuated body back and forth, and extend and contract along the advancing / retreating direction of the actuated body to guide the actuated body along the advancing / retreating direction with respect to the base In an interlocking chain type advance / retreat operation device having an advance / retreat guide mechanism,
    The advance / retreat guide mechanism has a plurality of slide portions that are juxtaposed along the juxtaposed direction and are relatively slidable in the advance / retreat direction, and the juxtaposed direction of the plurality of slide portions and the advance / retreat direction Intersect, and the slide parts are provided in contact with each other along the parallel direction,
    With the advance / retreat guide mechanism extending along the advance / retreat direction, a retracting end slide portion located on the retract side in the advance / retreat direction among the plurality of slide portions is fixed relatively to the base,
    Of the plurality of slide portions in the extended advance / retreat guide mechanism, the advance end slide portion located on the advance side in the advance / retreat direction is arranged closer to the meshing chain than the retract end slide portion along the parallel direction. The meshing portion is connected to an advancing end in the advancing / retreating direction of the meshing portion of the actuated body or the meshing chain, and fixed relative to the advancing end of the meshing portion in the advancing / retreating direction. Chain type advance / retreat actuator.
  2. 　前記複数のスライド部のうち、進退方向の退避側に位置する退避側スライド部の前記進退方向から視た断面積は、前記複数のスライド部のうち、前記退避側スライド部よりも進退方向の進出側に位置する進出側スライド部の前記進退方向から視た断面積より大きく設定されていることを特徴とする請求項１に記載の噛合チェーン式進退作動装置。 Of the plurality of slide portions, the cross-sectional area of the retract side slide portion located on the retract side in the advance / retreat direction viewed from the advance / retreat direction is advanced in the advance / retreat direction from the retract side slide portion of the plurality of slide portions. The meshing chain type advance / retreat operation device according to claim 1, wherein the engagement side chain advance / retreat operation device is set to be larger than a cross-sectional area as viewed from the advancing / retreating direction of the advancing side slide portion positioned on the side.
  3. 　前記複数のスライド部のうち、進退方向の退避側に位置する退避側スライド部は、前記複数のスライド部のうち、前記退避側スライド部よりも進退方向の進出側に位置する進出側スライド部の材質より剛性の高い材質で形成されていることを特徴とする請求項１または請求項２に記載の噛合チェーン式進退作動装置。 Among the plurality of slide portions, a retract side slide portion located on the retract side in the advance / retreat direction is an advance side slide portion located on the advance side in the advance / retreat direction than the retract side slide portion among the plurality of slide portions. The interlocking chain type advance / retreat operation device according to claim 1 or 2, wherein the interlocking chain type advance / retreat operation device is formed of a material having rigidity higher than that of the material.
  4. 　前記複数のスライド部は３つ以上であって、前記退避端スライド部と前記進出端スライド部との間の中間スライド部を含み、該中間スライド部の進退方向における進出側から前記噛合チェーンに向かって延びたアームと、該アームの先端に設けられて、前記噛合チェーンの噛み合い部分に係合するとともに噛合チェーンの噛み合い部分に対して進退方向に沿ってスライド自在な係合部とを備えていることを特徴とする請求項１から請求項３のいずれか一項に記載の噛合チェーン式進退作動装置。 The plurality of slide portions are three or more, and include an intermediate slide portion between the retracting end slide portion and the advance end slide portion, and from the advance side in the advance / retreat direction of the intermediate slide portion toward the meshing chain. And an engaging portion that is provided at the tip of the arm and engages with the meshing portion of the meshing chain and is slidable in the forward / backward direction with respect to the meshing portion of the meshing chain. The interlocking chain type advance / retreat operation device according to any one of claims 1 to 3, wherein the engagement chain type advance / retreat operation device is provided.
PCT/JP2013/071548 2012-09-05 2013-08-08 Meshing chain-type forward-backward movement operation device WO2014038344A1 (en)

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JP2012195531A JP5901476B2 (en) 2012-09-05 2012-09-05 Engagement chain type advance / retreat actuator
JP2012-195531 2012-09-05

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JP2009001378A (en) * 2007-06-21 2009-01-08 Tsubakimoto Chain Co Engagement chain type hoisting and lowering device
JP2009120308A (en) * 2007-11-14 2009-06-04 Tsubaki Emerson Co Engagement chain type electric hoisting and lowering device

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JP2011144832A (en) * 2010-01-12 2011-07-28 Tsubakimoto Chain Co Engagement chain type advancing and retreating device
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* Cited by examiner, † Cited by third party
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JPH0170790U (en) * 1987-10-28 1989-05-11
JPH08169693A (en) * 1994-12-19 1996-07-02 Sanin Booruto Seisakusho:Kk Extendedly paying-out device for band
JP2009001378A (en) * 2007-06-21 2009-01-08 Tsubakimoto Chain Co Engagement chain type hoisting and lowering device
JP2009120308A (en) * 2007-11-14 2009-06-04 Tsubaki Emerson Co Engagement chain type electric hoisting and lowering device

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