JP5215796B2 - Work auxiliary chair - Google Patents

Description

  The present invention relates to an auxiliary work chair. In particular, the present invention relates to an auxiliary work chair having a structure that reduces the burden on an operator when assembling parts on a workpiece in an assembly line.

  For example, as an assembly line for assembling a workpiece, an assembly line for assembling an automobile is known. In this automobile assembly line, parts are assembled to the vehicle body while the vehicle body suspended by a hanger or the vehicle body mounted on the pallet is moved along the transfer line.

  In an automobile assembly line, parts to be assembled to a car body of an automobile include a wiring harness that is an electrical part, interior parts such as an instrument panel and a seat, and exterior parts such as a mirror and a wiper. And in order to reduce the burden of the operator who assembles interior parts, the work auxiliary chair which supports a worker's weight is used.

  As such an auxiliary work chair, the structure is simplified, and the auxiliary work chair can be reduced in weight to facilitate movement after a predetermined assembling work, and can reduce the fatigue of the operator and improve the work efficiency. Is disclosed (for example, see Patent Document 1).

  The work auxiliary chair according to Patent Document 1 has a seating portion on which an operator is seated and a leg portion that supports the seating portion. Moreover, the auxiliary chair for work by patent document 1 has the engagement means provided with the contact part, and the wheel which rotates. The contact portion is disposed on the floor surface on which the conveyor is laid, and can be engaged with a holding portion provided on the pallet. The wheel moves the worker in synchronization with the pallet while the engaging means is engaged with the pallet.

According to Patent Literature 1, an operator who is seated on the work auxiliary chair can perform assembly work while moving in synchronization with the vehicle body while sitting outside the vehicle body and the pallet. Therefore, the auxiliary chair for work according to Patent Document 1 can assemble parts efficiently with a simple configuration.
JP 2002-78567 A

  The auxiliary work chair according to Patent Document 1 facilitates assembly work in a sitting posture. However, in the connection work of the fuse box provided at the lower part of the instrument panel, the operator is required to take the upper body in the vehicle body and to lie on his back (sleep on his back) or lie down (lay his body).

  Then, every time the workpiece is transported, there is a problem that it takes a heavy physical burden on the operator to return to the supine posture or the lying posture and to return to the normal sitting posture. Whatever posture the worker takes, there is a need for an auxiliary work chair that reduces the physical burden on the worker. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and is a work auxiliary chair that reduces the physical burden on the worker, and in particular, a work auxiliary chair that reduces the physical burden on the worker in a lying position. The purpose is to provide.

  In order to satisfy the above-mentioned purpose, the inventor tilts so as to be able to be buffered by leaning on the body side, and provides an auxiliary seat for assisting the return operation of the worker in a bufferable manner in the auxiliary work chair. We found that this problem can be solved, and based on this, we have invented the following new auxiliary chair for work.

  (1) In a work auxiliary chair for performing various operations on a workpiece moving on a transfer line, a base that is movable substantially in parallel with a movement direction of the workpiece, and the base is moved in synchronization with the workpiece. A working auxiliary chair comprising: a locking means; a seating portion that can be moved forward and backward with respect to the workpiece; and an auxiliary seat having an assisting means for assisting the weight of the worker during the tilting operation of the seating portion. .

  The auxiliary work chair according to the invention of (1) is used for performing various operations on the work moving on the transfer line. And the auxiliary chair for work by invention of (1) is provided with the base, the latching means, the seating part, and the auxiliary seat.

  The base is guided, for example, by a track laid on the floor and can move substantially parallel to the moving direction of the workpiece. For example, the locking means is locked to the transfer line and moves the base in synchronization with the workpiece. The seating portion is erected on the base and is seated by an operator. Moreover, the seating part can advance and retreat with respect to the workpiece.

  The auxiliary sheet has assist means. The assist means assists the weight of the operator during the tilting operation on the seating portion.

  For example, the workpiece may be a car body, and interior parts are assembled on the workpiece moving on the transfer line. However, the workpiece is not limited to a car body. The work moving on the transfer line and the work on which the parts are assembled can all be included in the invention of (1). The work auxiliary chair according to the invention of (1) is used when assembling parts on a work moving on a transfer line. It can also be said that the work auxiliary chair according to the invention of (1) is used in the work of assembling parts to the work moving on the transfer line.

  In the transfer line, the workpiece may move on a straight path, the workpiece may move on a curved path, or the work may move on a transfer path in which a straight path and a curved path are mixed. The workpiece may be moved by being hung by a hanger, may be moved by being mounted on a pallet, or may be moved by being mounted on a belt conveyor. The conveyance line can include any one of a hanger, a pallet, and a belt conveyor.

  The base is preferably a rigid but lightweight frame, and a frame structure combining a square pipe and a channel material is suitable. The base may be an assembly structure for assembling a square pipe or a channel material, a weld structure for welding the square pipe or the channel material to each other, or an assembly structure and a weld structure may be mixed.

  The track is a path for passing through the base, and as a substance, the track includes a rail laid on the floor surface, and may include a guide groove formed on the floor surface. The base may have fixed wheels that roll on rails, may have free wheels that roll on the floor, and may have slide units that can be slidably connected to the linear rails. You may attach all the free wheels and slide units. The base is guided by a track laid on the floor and can move substantially parallel to the moving direction of the workpiece.

  The locking means that locks to the transport line may include a mode in which a hook provided on the base is locked to a hanger, and may include a mode in which a hook provided on the base is locked to a pallet. A hook provided on the belt conveyor may be engaged with the belt conveyor, and any one of the aspects can be adopted.

  To move the base in synchronization with the work means that the base is moved by dragging the hook. While the base is locked to the transfer line, the base and the workpiece do not move relative to each other. Therefore, it is easy to assemble parts by approaching the workpiece.

  The base is preferably provided with a pedal for operating the hook. The hook may be locked to the transport line when the pedal is depressed, and it is preferable that the hook is released from the transport line when the pedal is returned, and the base is moved backward by releasing the hook from the transport line. Thus, it is possible to wait for the next workpiece.

  For example, the base may be provided with a pair of long rails at the top, and the pair of rails are arranged in a direction orthogonal to the moving direction of the base (the direction of movement guided by the track). The movable table is slidably connected to the pair of rails. If the leg part that supports the seating part is fixed to the movable base, the seating part can be advanced and retracted relative to the workpiece.

  In the work auxiliary chair according to the invention of (1), an auxiliary seat may be disposed on one side of the seating portion, and an armrest may be disposed on the other side of the seating portion. The work auxiliary chair according to the invention of (1) is preferably provided with a backrest, and the operator's sitting posture is stabilized. By providing the backrest, it becomes easy for the operator to kick the floor and move the base back.

  The fact that the auxiliary seat tilts when the worker leans on means that the worker tilts when the worker puts weight on the auxiliary seat. It is preferable that the auxiliary seat is configured to be inclined until one surface thereof is substantially parallel to the seating surface of the seating portion. If the distal end of the swing arm is fixed to the auxiliary seat and the base end of the swing arm is pivotally connected to the main body of the work auxiliary chair, the auxiliary seat can be tilted with respect to the seating portion.

  To tilt the auxiliary sheet so that it can be buffered means that the auxiliary sheet moves (rotates) at an appropriate speed. For example, the shock to the auxiliary sheet can be reduced by using a shock absorber. In the link device using a gas spring, the auxiliary seat can be tilted so as to be able to be buffered.

  To assist the weight during the tilting operation of the operator means that the assist means is biased in advance so that the auxiliary seat can be returned. For example, the base end portion of the swing arm may be extended, a tension coil spring may be attached to the extended end, and the auxiliary sheet may be biased so that the auxiliary seat can be restored. Further, a commercially available assist hinge may be used at the base end of the swing arm to assist (assist) standing of the auxiliary seat. If an assist hinge with a damper is used, the auxiliary seat can stand up so that it can be buffered.

  In the auxiliary work chair according to the invention of (1), for example, when the operator leans on the body side, the auxiliary seat tilts so as to be able to cushion, so that the physical burden on the operator can be reduced and the recumbent posture can be obtained. it can. In addition, it is easy to change the posture from the lying posture to the supine posture.

  Furthermore, in the work auxiliary chair according to the invention of (1), since the auxiliary seat assists the operator's tilting operation, the physical burden of the worker mainly due to muscle strength can be reduced and the normal sitting posture can be restored.

  (2) The seating portion is disposed so that an operator can sit substantially parallel to the traveling direction, and the side portion on the workpiece side of the seating portion is tilted to be lower than the other side portion. The work auxiliary chair according to (1), wherein the work auxiliary chair is disposed on the base.

  The work auxiliary chair according to the invention of (2) is arranged so that the worker can sit substantially parallel to the traveling direction, and the side portion on the work side of the seating portion is lower than the other side portion. Since it is tilted and disposed on the base, the operator can tilt slightly toward the workpiece when seated, and the tilting operation to the auxiliary seat becomes easy.

  (3) The auxiliary chair for work according to (1) or (2), wherein the auxiliary seat is provided so as to be close to or away from the workpiece by a rail provided on the base.

  Since the auxiliary sheet is provided so as to be close to or away from the workpiece by the rail provided on the base, it is easy to move.

  In the auxiliary work chair according to the present invention, when the operator leans on, the auxiliary seat tilts so as to be able to cushion, so that the physical burden on the operator can be reduced and the recumbent posture can be obtained. In addition, it is easy to change the posture from the lying posture to the supine posture.

  Further, the work auxiliary chair according to the present invention is provided in the seating portion and includes assist means for assisting the body weight during the tilting operation of the worker, so that the physical burden of the worker mainly due to muscular strength is reduced. Can return to the sitting posture.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of an auxiliary work chair according to an embodiment of the present invention as viewed from the front side, and is a state diagram in which the auxiliary chair is locked to a transport line. FIG. 2 is a front view in which an operator sits on the auxiliary work chair according to the embodiment, and is a state diagram before heading to a work (vehicle body). FIG. 3 is a rear view in which the worker leans on the work auxiliary chair according to the embodiment, and is a state diagram in which the worker assembles the components inside the work (vehicle body).

  FIG. 4 is a perspective view of the auxiliary work chair according to the embodiment as viewed from the left side, and is a state diagram in which one end of the base is engaged with the slide unit. FIG. 5 is a perspective view of the auxiliary work chair according to the embodiment as seen from the left side, and partially shows a state in which a hanger provided on one end side of the base is engaged with the linear motion rail. FIG. 6 is a perspective view of the work auxiliary chair according to the embodiment, and is a state view of the work auxiliary chair mounted on the carriage as viewed from the front side.

  Initially, the structure of the work auxiliary chair (henceforth an auxiliary chair) by embodiment of this invention is demonstrated. Referring to FIG. 1 or FIG. 6, the auxiliary chair 10 is used when assembling parts on the vehicle body W, which is a work that moves on a transportation line of an automobile. The vehicle body W is mounted on the hanger H and moves on a straight road. In FIG. 1, the vehicle body W moves from the back side to the near side in the drawing.

  Referring to FIG. 1 or FIG. 6, the auxiliary chair 10 includes a base 20. The base 20 shown in FIG. 6 is mounted on the cart 6. The base 20 is mainly composed of a substantially rectangular frame 2 combined with channel materials.

  Referring to FIG. 1 or FIG. 6, the frame 2 has a fixed wheel 21 w that forms a semicircular groove on the outer periphery attached to one side surface. The fixed wheel 21w is stretched on the frame body 2 by a wire 2w. The frame 2 has a pair of universal wheels 22w and 22w that roll on the floor surface FL attached to one end.

  Referring to FIG. 1, a long rail 1r having a half-moon shaped cross section is laid on the floor surface FL in parallel with the moving direction of the vehicle body W. The fixed wheel 21w can roll on the track of the rail 1r.

  Referring to FIGS. 1 and 4, a long linear motion rail 3 r is laid on the floor surface FL in parallel with the moving direction of the vehicle body W. The slide unit 3s is slidably connected to the linear motion rail 3r. The other end of the frame 2 is detachably attached to the slide unit 3s.

  Referring to FIG. 5, one wing of the slide unit 3s is fixed to the hanger 3h. The hanger 3h has a pair of rotating wheels on both wings. And these rotary wheels are guided to the groove | channel provided in the linear motion rail 3r. That is, the slide unit 3s can be moved straight while being suspended by the linear motion rail 3r.

  In FIG. 1, the base 20 is mainly guided by the linear motion rail 3 r and can move substantially parallel to the moving direction of the vehicle body W. The base 20 is guided in an auxiliary manner by the rail 1r and can move substantially parallel to the moving direction of the vehicle body W.

  Referring to FIG. 1 or FIG. 2 and FIG. 6, the base 20 has a hook 4 as a locking means at one end. When the hook 4 is locked to the hanger H, it is dragged by the hook 4 and the base 20 moves. That is, the base 20 can be moved in synchronization with the vehicle body W.

  Referring to FIG. 1 or FIG. 2, the base 20 is provided with a pedal 2 p that operates the hook 4. When the worker M steps on the pedal 2p, the hook 4 rotates and can be locked to the hanger H, and when the pedal 2p is returned, the hook 4 is released from the hanger H. The rotational motion of the base end portion of the pedal 2p is transmitted to a connecting rod (not shown) and converted into the swing motion of the hook 4. By releasing the hook 4 from the hanger H and moving the base 20 backward, it is possible to stand by for the next vehicle body W.

  Referring to FIG. 1 or FIG. 6, the base 20 is provided with a pair of long rails 22, 22 on the upper part of the frame 2. The pair of rails 22 and 22 are arranged in a direction orthogonal to the moving direction of the base 20 (the direction of movement guided by the linear motion rail 3r). And the movable stand 23 is connected with a pair of rails 22 and 22 so that a slide is possible. The leg portion 12 that supports the seating portion 11 is fixed to the moving base 23, and the seating portion 11 can be advanced and retracted with respect to the vehicle body W.

  Referring to FIG. 1 or FIG. 6, the auxiliary chair 10 has an auxiliary seat 13 disposed on one side portion of the seating portion 11. Further, the auxiliary chair 10 has an armrest 14 disposed on the other side portion of the seating portion 11. Further, the auxiliary chair 10 is provided with a backrest 15 so that the sitting posture of the worker M is stabilized. Providing the backrest 15 makes it easy for the operator M to kick the floor surface FL and retreat the base 20.

  In FIG. 2, the auxiliary seat 13 can be tilted when the worker M leans on the body side. When the worker M puts weight on the auxiliary sheet 13, the auxiliary sheet 13 can be tilted.

  In FIG. 1 or FIG. 6, the auxiliary seat 13 is configured to incline until one surface thereof is substantially parallel to the seating surface 11 a of the seating portion 11. The auxiliary chair 10 includes a swing arm 13 a, and the tip of the swing arm 13 a is fixed to the auxiliary seat 13. The base end portion of the swing arm 13 a is rotatably connected to the bottom portion of the seat portion 11, and the auxiliary seat 13 can be tilted with respect to the seat portion 11.

  Referring to FIG. 1 or FIG. 6, a commercially available assist hinge 13b as assist means is used at the base end of the swing arm 13a. When the worker M puts weight on the auxiliary sheet 13, the auxiliary sheet 13 is tilted so as to be buffered. The assist hinge 13b can assist (assist) the weight of the worker M during the tilting operation. The assist hinge 13b has a built-in damper and can stand up the auxiliary seat 13 so that it can be buffered.

  Referring to FIG. 1 or FIG. 6, the auxiliary chair 10 is tilted so that one side portion on which the auxiliary seat 13 is disposed is lower than the other side portion facing the one side portion. It is arranged. The side portion of the seating portion 11 on the vehicle body W side is inclined and disposed on the base 20 so as to be lower than the other side portion. Since the auxiliary chair 10 is tilted and disposed on the base 20, the worker M can tilt slightly toward the vehicle body W when seated (see FIG. 2), and the tilting operation to the auxiliary seat 13 is possible. Becomes easier.

  Further, referring to FIG. 1 or FIG. 6, the auxiliary sheet 13 is provided with a low-repulsion sheet that conforms to the body shape of the worker M and flexibly deforms on the contact surface 131 of the worker M. A commercially available low-resilience urethane foam may be used as the low-resilience sheet, and the upper-body weight in the lying position or the supine position is dispersed in the auxiliary sheet 13 because it conforms to the body shape of the worker M and is flexibly deformed. (See FIG. 3). Therefore, the burden on the body can be eased and local blood circulation can be prevented.

  Referring to FIG. 6, the base 20 is mounted on the cart 6. The base 20 is used by being detached from the cart 6 when assembling parts on the vehicle body W. Referring to FIG. 4, a pair of couplers 8 and 8 are provided at the other end of the frame 2. When the lever 8a provided in the connector 8 is opened, the connection with the slide unit 3s can be released. When the lever 8a is closed, the slide unit 3s can be connected.

  4 and 5, a pair of fitting pins 3p and 3p are installed on the upper surface of the slide unit 3s. The fitting pin 3 p is fitted in a recess provided at the tip of the coupler 8. When the lever 8a is opened, the fitting with the fitting pin 3p can be released. When the lever 8a is closed, the fitting pin 3p can be fitted.

  Next, a part assembling procedure using the auxiliary chair 10 according to the embodiment of the present invention will be described.

  Referring to FIG. 6, the worker M is sitting on the auxiliary chair 10, and the worker M can kick the floor and head toward the vehicle body W. Next, referring to FIG. 2, when the worker M puts weight on the auxiliary sheet 13, the auxiliary sheet 13 tilts so as to be buffered. At this time, when the worker M leans on the body side, the auxiliary sheet 13 tilts so as to be able to be buffered, so that the physical burden on the worker M can be reduced and a recumbent posture can be achieved. Then, the worker M can assemble the parts inside the vehicle body W (see FIG. 3).

  Next, referring to FIG. 2, the worker M, for example, puts one arm on the hanger H and returns to the initial sitting posture. At this time, since the auxiliary seat 13 is energized to assist the returning operation of the worker M, the physical burden of the worker mainly due to muscular strength can be reduced, and the normal seating posture can be restored. .

  Next, the worker M returns the pedal 2p (see FIG. 2), and releases the locked state of the hook 4 with the hanger H. Next, the worker M kicks the floor surface FL, moves rearward, and waits to assemble a part on the next vehicle body W (see FIG. 2).

  As described above, the auxiliary chair 10 according to the embodiment of the present invention tilts the auxiliary seat 13 so that it can be buffered when the worker M leans on the body side. It can be a posture. In addition, it is easy to change the posture from the lying posture to the supine posture.

  Furthermore, the auxiliary chair 10 according to the embodiment of the present invention, because the auxiliary seat 13 assists the tilting operation of the worker M, reduces the physical burden of the worker M mainly due to muscle strength and returns to the normal sitting posture. it can. In the present embodiment, the present invention is not limited to the side portion of the worker M, but can be used for a backrest or a forward tilt posture when tilting backward.

It is the perspective view which looked at the auxiliary chair for work by one Embodiment of this invention from the front side, and is the state figure latched to the conveyance line. It is a front view in which the worker sat on the work auxiliary chair according to the embodiment, and is a state diagram before heading to a work (vehicle body). FIG. 4 is a rear view in which the worker is tilted to the work auxiliary chair according to the embodiment, and is a state diagram in which the worker is assembling parts inside the work (vehicle body). It is the perspective view which looked at the auxiliary chair for work by the above-mentioned embodiment from the left side, and is a state figure where one end side of the base was engaged with the slide unit. It is the perspective view which looked at the auxiliary chair for work by the above-mentioned embodiment from the left side, and shows the state where the hanger with which one end side of a base was engaged with the linear motion rail was shown partially. It is the perspective view of the auxiliary chair for work by the said embodiment, and is the state figure which looked at the auxiliary chair for work mounted in the trolley | bogie from the front side.

Explanation of symbols

1r rail (track)
3r linear motion rail (track)
4 Hook (locking means)
10 Auxiliary chair (working auxiliary chair)
11 Seating Section 13 Auxiliary Seat 13b Assist Hinge (Assist Means)
20 Base M Worker W Car body

Claims (3)

In an auxiliary work chair for performing various operations on the workpiece moving on the transfer line,
A base that is movable substantially parallel to the movement direction of the workpiece;
Locking means for moving the base in synchronization with the workpiece;
A seating portion capable of advancing and retracting with respect to the workpiece;
An auxiliary chair for work comprising: an auxiliary seat having an assisting means for assisting a body weight during the tilting operation of the worker while tilting when the worker leans on a side portion of the seating portion.   The seating part is disposed so that an operator can sit substantially parallel to the traveling direction, and the base part is tilted so that the side part of the seating part on the workpiece side is lower than the other side part. The work auxiliary chair according to claim 1, wherein the work auxiliary chair is disposed on a table. The work auxiliary chair according to claim 1, wherein the auxiliary seat is provided so as to be close to or separated from the workpiece by a rail provided on the base.

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