CN102784949A - Electric tool and transmission mechanism thereof - Google Patents
Electric tool and transmission mechanism thereof Download PDFInfo
- Publication number
- CN102784949A CN102784949A CN2011101462790A CN201110146279A CN102784949A CN 102784949 A CN102784949 A CN 102784949A CN 2011101462790 A CN2011101462790 A CN 2011101462790A CN 201110146279 A CN201110146279 A CN 201110146279A CN 102784949 A CN102784949 A CN 102784949A
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- Prior art keywords
- axle
- transmission mechanism
- gear
- electric tool
- oscillating lever
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D16/003—Clutches specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/062—Means for driving the impulse member comprising a wobbling mechanism, swash plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0015—Tools having a percussion-only mode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0023—Tools having a percussion-and-rotation mode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0038—Tools having a rotation-only mode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/331—Use of bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention relates to a transmission mechanism for an electric tool. The transmission mechanism comprises a shaft, a gear and an oscillating bar bearing, wherein the shaft is driven by a driving mechanism of the electric tool and comprises a first shaft portion, a second shaft portion and a driving portion which is arranged between the first shaft portion and the second shaft portion; the gear is installed on the first shaft portion and can slide relative to the first shaft portion along an extension direction of the shaft, and driving pieces which can be matched with each other are arranged between the gear and the driving portion of the shaft; the oscillating bar bearing is installed on the second shaft portion and comprises an inner ring and an outer ring, a raceway between the inner ring and the outer ring is inclined relative to the second shaft portion, driving pieces which can be matched with each other are arranged between the inner ring and the driving portion, and an oscillating bar is arranged on the outer ring and extends in an inclined surface where a slide way is located. The invention further relates to the electric tool with the transmission mechanism and particularly relates to an electric hammer drill.
Description
Technical field
The present invention relates to a kind of electric tool, relate in particular to the transmission mechanism that a kind of electric hammer bores.
Background technology
The electric tool that in the engineering field, is widely used, for example electric hammer brill etc.In order to accomplish different processing tasks, common this electric tool can be worked in different cooked modes, for example single cooked mode, hammer drill cooked mode, single cutter cooked mode etc. of boring.In order to make electric tool between these patterns, to switch, electric tool for example must be provided with specific transmission mechanism between drill bit etc. and the drive motors in tool heads.
Patent publication us CN 200510099493 discloses a kind of electric tool, and it comprises gear sleeve, driving bearing, gear shaft and driving shaft.In this electric tool, driving shaft passes to driving bearing and gear shaft through gear sleeve, realizes that with this electric tool can be with the promptly single brill cooked mode of three kinds of patterns, hammer drill cooked mode, the work of single cutter cooked mode.Technical scheme in this patent publication us must process gear on power transmission shaft, this has increased the difficulty of processing of axle virtually; All pattern conversion work all only realize that through moving power transmission shaft this has also increased the assembling difficulty undoubtedly in addition.
Patent publication us EP1157788A2 also discloses a kind of electric tool; It comprises jackshaft, axle, compressed air hammer drill structure and transmission mechanism; Said transmission mechanism comprises axle drive member, drive sleeve and mode of operation regulating sleeve; Through the interaction between the drive member on the drive member on the axle drive member and driven wheel on the jackshaft and the mode of operation regulating sleeve, this electric tool can switch promptly single the boring between cooked mode, hammer drill cooked mode, the single cutter cooked mode of three kinds of patterns.The complicacy that the transmission mechanism of this patent publication us technical scheme relates between the multiple part cooperates, and has also increased the fault rate in assembling difficulty and the running undoubtedly.
Though patent publication us CN2920563Y also discloses a kind of transmission mechanism that is used for electric hammer, on the driving shaft of this transmission mechanism the action that clutch is realized gear shift need be installed additionally, also can cause the too much problem of number of parts.
Be used for the transmission mechanism that electric tool is changed although prior art has been developed between different mode, these transmission mechanisms are very complicated, and the number of parts that often needs is too much.As everyone knows, transmission mechanism complicacy and number of parts are many in mechanical field must cause operation maintenance difficulty and the high problem of fault rate.
Therefore, press for a kind of transmission mechanism efficient, safeguard simple electric tool.
Summary of the invention
Therefore, one aspect of the present invention purpose is to propose a kind of transmission mechanism that is used for electric tool, and it comprises: by the axle of the drive mechanism of electric tool, comprise the first axle part, the second axle part and be arranged at the first axle part and the second axle part between drive division; Be installed on the gear of the first axle part, gear can slide with respect to the bearing of trend of the first axle part along axle, is provided with the actuator that can cooperatively interact between the drive division of gear and axle; Be installed on the Oscillating lever bearing of the second axle part; Oscillating lever bearing comprises inner ring and outer ring, and the raceway between inner ring and the outer ring is obliquely installed with respect to the second axle part, is provided with the actuator that can cooperatively interact between inner ring and the drive division; On the outer ring, be provided with fork, fork extends in the inclined plane at slideway place.
Preferably, the drive division of said axle is integrally formed on the said axle.
Preferably; The drive division of said axle is the boss that on said axle, is provided with; The actuator of the drive division of said axle is groove or the key that on said boss, is provided with, with the corresponding key of the inner ring of said Oscillating lever bearing or groove engages and/or engage with the corresponding key or the groove of said gear.
Preferably, said Oscillating lever bearing is installed on said the second axle part through a sleeve pipe, and wherein the second axle part can slide in said sleeve pipe.
Preferably, the actuator of the drive division of said axle is a mounted component on said axle.
Preferably, between the first axle part of said axle and said gear and/or between the inner ring of said the second axle part and said Oscillating lever bearing, bearing is housed.
Preferably, on the periphery of said sleeve pipe, be provided with latch-up structure, it cooperates with latch-up structure on the inner ring of said Oscillating lever bearing, so that said inner ring only can be around said central axis rotation.
Preferably, said driving part is between said gear and said Oscillating lever bearing.
Preferably, the driving element of said sleeve pipe and driving mechanism is integrally formed.
The present invention relates to a kind of electric tool on the other hand, and it comprises aforesaid transmission mechanism.
Description of drawings
Explain in further detail based on accompanying drawing below the illustrative examples of the present invention, wherein:
Fig. 1 has schematically shown electric tool according to the preferred embodiment of the invention, the perspective view of the electric hammer major part of boring especially;
Fig. 2 a has schematically shown the perspective view that is in the transmission mechanism in the hammer drill pattern of electric tool according to the preferred embodiment of the invention;
Fig. 2 b has schematically shown the cross section and perspective of the transmission mechanism shown in Fig. 2 a;
Fig. 3 a has schematically shown the perspective view that is in the transmission mechanism in single cutter pattern of electric tool according to the preferred embodiment of the invention;
Fig. 3 b has schematically shown the cross section and perspective of the transmission mechanism shown in Fig. 3 a;
Fig. 4 a has schematically shown the perspective view that is in the transmission mechanism in single drill jig formula of electric tool according to the preferred embodiment of the invention; And
Fig. 4 b has schematically shown the cross section and perspective of the transmission mechanism shown in Fig. 4 a.
The specific embodiment
Following with reference to description of drawings electric tool, the transmission mechanism that bores of electric hammer especially according to the preferred embodiment of the invention.Need to prove that identical Reference numeral is represented the identical or close element of function in each figure.
At first, it is to be noted that transmission mechanism according to the present invention is not limited to electric hammer and bores.That is to say, any need pure rotation, pure reciprocating motion and rotation add move back and forth the electric tool that switches between the combination etc. for example electric saw etc. can adopt according to transmission mechanism of the present invention.
Below only schematically but non-exclusively adopt electric hammer to bore and explain according to electric tool of the present invention and transmission mechanism thereof.
As shown in Figure 1, electric tool comprises hammer pipe 1, manages 1 hard-wired gear 2, is enclosed within cylinder assembly 3 and transmission mechanism 4 in the said hammer pipe 1 with respect to said hammer.This transmission mechanism 4 comprises Oscillating lever bearing 5, rotation driving element 6, axle 7 and geared parts/gear 8.The driving element 6 of transmission mechanism 4 is by the (not shown) motor-driven rotation of electric tool.Axle 7 non-rotatably is mounted with respect to driving element 6, thereby when driving element 6 was driven in rotation, axle 7 also correspondingly rotated.Geared parts/the gear 8 of transmission mechanism 4 can be installed on the axle 7 with being free to slide, be installed on the first axle part of axle 7 particularly along the longitudinal axis of axle 7.
Under common situation, geared parts 8 can freely rotate around its longitudinal center's axis on axle 7.Only when the groove 7a of the key 8a of geared parts 8 and axle 7 cooperatively interacts (as shown in Figure 1), axle 7 can 8 rotations of driven gear parts.Because geared parts 8 and gear 2 engagements so the rotation of geared parts 8 can be rotated by driven gear 2, are hammered pipe 1 rotation into shape thereby drive.Like this, when corresponding cutterhead or tool heads when for example drill bit is installed on the electric tool, the user can carry out the operation such as boring with the cutterhead or the tool heads of this electric tool ground rotation.This is single (drilling) pattern of boring.
As shown in Figure 1, the Oscillating lever bearing 5 of transmission mechanism 4 comprises inner ring, is bearing block 5c and outer ring, is provided with raceway between said inner ring and the outer ring, in said raceway, for example is provided with ball.Said raceway is obliquely installed with respect to axle 7; Oscillating lever bearing 5 relative axles 7 are inclined to set; And fork one end of said Oscillating lever bearing links to each other with cylinder assembly 3 pivots that hammer is managed in 1; And the bearing block 5c of this Oscillating lever bearing 5 (shown in Fig. 2 b) also can install around longitudinal center's axis of axle 7 with rotating freely, is installed in particularly on the second axle part of axle 7.
Under normal conditions, bearing block 5c can freely rotate around the longitudinal axis of axle 7.Only when the groove 7b of the key 5a of Oscillating lever bearing 5 and axle 7 cooperatively interacts (shown in Fig. 2 a), the rotation of axle 7 can be passed to Oscillating lever bearing 5.Because the raceway of Oscillating lever bearing 5 is with respect to axle 7, especially the second axle part with respect to axle 7 is obliquely installed; So when axle 7 drives bearing block 5c rotation; Can swing along the longitudinal axis of axle 7 with the fork of bearing outer ring one; Thereby make the pistons in the cylinder assembly 3 move back and forth, drive cutterhead or tool heads with this and move back and forth along the longitudinal axis of hammer pipe 1 along the longitudinal axis of hammer pipe 1.Like this, when corresponding cutterhead when for example chisel is installed on the electric tool, the user can carry out the operation such as the pricker cutter with this electric tool.This is single cutter (chiseling) pattern.
Can expect that the gear 2 on hammer pipe 1 and cylinder assembly 3 if corresponding cutterhead is installed on the electric tool, then can carry out the hammer drill operation when rotation through axle 7 is driven simultaneously (as shown in Figure 1).This is hammer drill (hammering) pattern.
Particularly, with reference to Fig. 2 to 5 transmission mechanism according to the preferred embodiment of the invention is described respectively below.Can regulate electric tool according to transmission mechanism of the present invention and make it to be in different operating modes, like hammer drill pattern, single cutter pattern and single drill jig formula.
Fig. 2 a and 2b show the transmission mechanism 4 that is in the hammer drill pattern according to the preferred embodiment of the invention.As shown in the figure, this transmission mechanism 4 comprises Oscillating lever bearing 5, rotation driving element 6, axle 7 and geared parts 8, and wherein a sleeve pipe 9 is installed in the hole of said driving element 6, and this sleeve pipe is with respect to said driving element 6 fixed installations.Although sleeve pipe 9 is with respect to driving element 6 fixed installations in this embodiment, what also can expect is that in an optional embodiment, sleeve pipe 9 is one-body molded with driving element 6.
The concrete structure of Oscillating lever bearing 5 and operation principle can be consulted the technical data of prior art, thereby omit in this manual its explanation.
In the present embodiment, the bearing block 5c of Oscillating lever bearing 5 can be set on the outer surface of sleeve pipe 9 with the relative rotation.In order to prevent that bearing block 5c from moving along the axis direction of sleeve pipe 9, be bonded among the circumferential groove 9a that radially offers the outer surface of sleeve pipe 9 from the outstanding protuberance 5d of inner surface radial direction in the hole of bearing block 5c.Thereby when transmission mechanism 4 work, the bearing block 5c of Oscillating lever bearing 5 fixes with respect to the axial location of sleeve pipe 9, but does not influence the rotation of bearing block 5c with respect to sleeve pipe 9.But the present invention is not limited to described mode.For example, the groove that radially is arranged with can also be set on the inner surface in the hole of bearing block 5c, and in the outer surface of sleeve pipe 9, be extruded with protuberance, slide vertically with respect to sleeve pipe 9 to prevent bearing block 5c thereby groove engages protuberance.
In order to reduce the bearing block 5c frictional force in when rotation, between the outer surface of the inner surface in the hole of bearing block 5c and sleeve pipe 9, any suitable bearing arrangement can also be set alternatively, for example needle bearing etc.
An axle part of 7, be that the second axle part can be inserted in the sleeve pipe 9 with being free to slide.In order to make the rotation of sleeve pipe 9 can pass to axle 7, the longitudinal axis of edge axle 7 and sleeve pipe 9 is correspondingly offering the keyway arrangements that cooperatively interacts on the outer surface of axle 7 and on the inner surface of sleeve pipe 9.Therefore, the keyway through this between the two interacts, and any rotation of sleeve pipe 9 can both pass to axle 7.
For example, in this embodiment, the end in the insertion sleeve pipe 9 of axle 7 is formed triangle or square shape, and the shape complementarity of this end of the shape of the endoporus of the receiving axes 7 of sleeve pipe 9 and said axle 7 also is a triangle or square.Thereby axle 7 can be along the longitudinal sliding motion of sleeve pipe 9, and sleeve pipe 9 can driving shaft 7 rotations.
What can expect is that the present invention is not limited to described situation.Any suitable structure can be set on axle 7, as long as can be passed to axle 7 from driving element 6 with rotatablely moving, and the slip that does not influence axle 7 axis longitudinally gets final product.This suitable structure example is as including but not limited to friction clutch structure etc.
Shown in Fig. 2 b, the roughly longitudinal center position at axle 7 along the circumferential direction is provided with the boss 7d that radially outward stretches out.In this embodiment, Oscillating lever bearing 5 is installed between said boss 7d and said driving element 6.Said boss 7d on an end of driving element 6, be provided with groove 7b, it can match with the key 5a that on the end away from said driving element 6 of the bearing block 5c of said Oscillating lever bearing 5, is provided with.Preferably, the circumference of this end of the said boss 7d in edge is provided with a plurality of groove 7b.Said a plurality of groove 7b is corresponding with a plurality of key 5a that on the end away from said driving element 6 of the bearing block 5c of said Oscillating lever bearing 5, are provided with; Thereby axle 7 is towards driving element 6 slips and make said groove 7b just can receive said key 5a, so that the rotation of axle 7 is passed to Oscillating lever bearing seat 5c.
For transferring rotational motion, also can expect key being set on the axle 7 and groove correspondingly being set on the bearing block of Oscillating lever bearing 5 with opposite mode as shown in the figure.In the present embodiment, transmitting rotation between axle 7 and the Oscillating lever bearing 5 realizes through keyway arrangements.But the present invention is not limited to this, other any can between two parts, the structure of transferring rotational motion can employing.For example, between the bearing block 5c of axle 7 and Oscillating lever bearing 5, adopt friction clutch, electromagnetic clutch etc., come transferring rotational motion.
Geared parts 8 is set on axle 7 opposite with driving element 6 that part of, thereby geared parts 8 can rotate freely around longitudinal center's axis of axle 7 and can be freely slidably reciprocate along the longitudinal axis of axle 7.On the end face opposite with groove 7b of the boss 7d of axle 7, offer groove 7a similarly with groove 7b, it can cooperate with the key 8a that on the end relative with groove 7a on the geared parts 8, is provided with.
Preferably, on the boss 7d of said axle 7, a plurality of groove 7a are set, thus corresponding with a plurality of key 8a that on an end relative of geared parts 8, are provided with groove 7a.Thereby, when geared parts 8 slides among the groove 7a of boss 7d that its key 8a joins axle 7 to along the longitudinal axis of axle 7,8 rotations of axle 7 driven wheel parts.That is to say that in this case, geared parts 8 is along with axle 7 rotates together.Thereby through the engagement of geared parts 8 with gear 2, axle 7 final driven wheel 2 rotations are so that drive 1 rotation of hammer pipe.For the friction between the outer surface of the inner surface in the hole that reduces geared parts 8 and axle 7, what can expect is between the two, ball bearing or needle bearing etc. to be set suitably.
In order to realize that axle 7 longitudinal axis along sleeve pipe 9 slidably reciprocate, on the axle 7 or on the boss 7d at axle 7, especially groove 7c is set along the circumferential direction between groove 7a and 7b.This groove 7c can engage with the washer of not shown switching mechanism, thereby can be along the longitudinal axis direction of axle 7 with respect to driving element 6 and sleeve pipe 9 axle 7 that fiddles with, so that realize the slip of axle 7.
Similarly, on the periphery of geared parts 8, also be provided with groove 8b, this groove 8b can engage with the washer of not shown switching mechanism equally, thereby along the longitudinal axis with respect to axle 7 geared parts 8 that fiddles with, so that realize the slip of geared parts 8.
Though axle 7 and geared parts 8 are realized being set to groove along the part that the longitudinal axis of axle 7 slides, what can expect is that the structure of other any axis drive shaft longitudinally 7 and geared parts 8 can adopt.For example, alternatively, the radially flange of evagination can be set along the circumferential direction, respectively on axle 7 and geared parts 8 so that stir their slip of realization by the corresponding washer of switching mechanism.
Although in illustrative examples of the present invention, adopted the mode that boss 7d is set on axle 7 to come driven wheel parts 8 and bearing block 5c rotation respectively, it should be understood that the present invention is not limited to this.For example; As substituting; In the position shown in Fig. 2 a and 2b in the axle 7; Groove along the circumferential direction is set, and the keyed engagement at a plurality of intervals that the inner surface radial direction from the hole of the bearing block 5c of the inner surface in the hole of geared parts 8 and Oscillating lever bearing 5 inwardly stretches out is in said circumferential groove on the outer surface of axle 7, thereby bearing block 5c and geared parts 8 can both rotate freely at this moment with respect to axle 7.For the rotation with axle 7 passes to geared parts 8 and bearing block 5c respectively, can on axle 7, offer a plurality of longitudinal flutings along the longitudinal axis and link to each other with said circumferential groove.The circumferential position of said a plurality of longitudinal flutings is corresponding with a plurality of keys of said bearing block 5c and geared parts 8.Slide along the longitudinal axis respectively and when making in the said longitudinal fluting of being keyed onto of they, axle 7 can drive said Oscillating lever bearing 5 and said geared parts 8 rotations respectively at bearing block 5c and geared parts 8.
Fig. 2 a and 2b show according to the preferred embodiment of the invention, and transmission mechanism 4 is in the hammer drill pattern.In this hammer drill pattern, the key 8a of geared parts 8 and the key 5a of bearing block 5c join among the groove 7a and 7b of axle 7 simultaneously, thereby the rotation of axle 7 passes to geared parts 8 and Oscillating lever bearing 5 simultaneously.In this case, 2 rotations of geared parts 8 driven gears, thus cause 1 rotation of hammer pipe; And bearing block 5c rotation simultaneously drives fork 5b and swings back and forth, thereby causes the reciprocating motion of the pistons in the cylinder assembly 3.In this pattern, the cutterhead that is installed on the electric tool both rotated, and also did the cutter motion of reciprocal swing, can utilize the for example work of the electric tool completion hammer drill of drill bit of tool heads that is equipped with this user.
Because on the axle 7 of transmission mechanism 4 according to the present invention, directly be not processed with gear parts, but the geared parts 8 that in assembling, will process is above that sheathed.The difficulty of processing that this has obviously reduced axle 7 that is to say the processing cost that has reduced transmission mechanism of the present invention.And when gear or axle damage, only change one of them part, reduce maintenance cost.
The transmission mechanism 4 that Fig. 3 a and 3b show the illustrative examples according to the present invention is in single cutter pattern.
Shown in Fig. 3 b, in this pattern, geared parts 8 longitudinally axis edge slides away from the direction of the boss 7d of axle 7, thereby the groove 7a of the key 8a of geared parts 8 and boss 7d is disengaged.Although axle 7 rotations, it only dallies and not driven wheel parts 8 rotations in the hole of geared parts 8.Therefore, in this case, the gear 2 of electric tool is not driven in rotation, and hammer pipe 1 does not rotate yet.Because have only the key 5a of Oscillating lever bearing 5 to be bonded in the groove 7b of axle 7, so the tool heads of electric tool only moves back and forth along the longitudinal axis of cylinder assembly 3.At this moment, the user can utilize this electric tool to carry out single chiseler's work.
Adopt technological means of the present invention, need not to stir whole axle 7, and only need pattern conversion that handsetting gear parts 8 just can realize transmission mechanism for example from the extremely conversion of single cutter pattern of hammer drill pattern.Therefore, reduce the area that wearing and tearing take place between the parts, improved the durability of transmission mechanism.In addition, only handsetting gear parts 8 are obviously easier than stirring whole axle 7, and this also provides a kind of transmission mechanism of handled easily.
The transmission mechanism 4 that Fig. 4 a and 4b show the illustrative examples according to the present invention is in single drill jig formula.
As shown in Figs. 4a and 4b, in this pattern, axle 7 slide along the longitudinal axis so that the boss 7d of axle 7 away from Oscillating lever bearing 5, thereby the groove 7b of boss 7d is disengaged from the key 5a of bearing block 5c; The rotation but geared parts 8 and axle 7 keep together.Therefore, in this case, be rotated though driving element 6 drives axle 7, sleeve 9 only freely dallies in the endoporus of Oscillating lever bearing 5.The bearing block 5c of Oscillating lever bearing 5 does not rotate, thereby the piston of cylinder assembly 3 does not move back and forth yet.Because only geared parts 8 driven gears 2 rotations are so the tool heads of electric tool only rotates around the central axis of hammer pipe 1.At this moment, the user can utilize this electric tool to carry out single driller's work.
Below only schematically illustrate transmission mechanism of the present invention and three mode of operations thereof.But alternatively, can also be in other mode of operation according to transmission mechanism of the present invention.For example; Through axis handsetting gear parts longitudinally 8 and axle 7; Groove 7a and the 7b of boss 7d are disengaged with the key 8a of geared parts 8 and the key 5a of bearing block 5c simultaneously, thereby make electric tool be in the maintenance idle state, so that for example change the work of tool heads, maintenance etc.
In addition, in above-mentioned illustrative examples of the present invention, thereby axle 7 is enclosed within the sleeve pipe 9 and always can obtains rotatablely moving from driving element 6.But; Be also contemplated that in axle 7 and sleeve pipe 9 corresponding clutch structure is set; Though thereby axle 7 can be in sleeve pipe 9 longitudinally axis freely slide, only axle 7 can obtain rotatablely moving from driving element 6 when clutch structure works.This clutch structure can be any clutch structure that those skilled in the art can expect, includes but not limited to friction clutch etc.By this way, when axle 7 slided into this clutch structure disengaging work, geared parts 8 can not rotate with bearing block 5c.In this case, can change tool heads and work such as maintenance, maintenance to electric tool safely.
Under the prerequisite that does not break away from spirit of the present invention, any remodeling, modification or their combination that can obtain through the reading present specification all belong to category of the present invention.
Claims (10)
1. transmission mechanism that is used for electric tool, it comprises:
By the axle (7) of the drive mechanism of electric tool, comprise the first axle part, the second axle part and be arranged at the first axle part and the second axle part between drive division;
Be installed on the gear (8) of the first axle part, gear can slide with respect to the bearing of trend of the first axle part along axle, is provided with the actuator that can cooperatively interact between the drive division of gear and axle;
Be installed on the Oscillating lever bearing (5) of the second axle part; Oscillating lever bearing comprises inner ring and outer ring; The raceway that is arranged between inner ring and the outer ring is obliquely installed with respect to the second axle part; Be provided with the actuator that can cooperatively interact between inner ring and the drive division, on the outer ring, be provided with fork, fork extends in the inclined plane at slideway place.
2. transmission mechanism according to claim 1 is characterized in that, the drive division of said axle is integrally formed on the said axle (7).
3. transmission mechanism according to claim 1 and 2; It is characterized in that; The drive division of said axle is to go up the boss (7d) that is provided with at said axle (7); The actuator of the drive division of said axle is to go up groove or the key that is provided with at said boss (7d), with the corresponding key of the inner ring of said Oscillating lever bearing (5) or groove engages and/or engage with the corresponding key or the groove of said gear (8).
4. according to the arbitrary described transmission mechanism of claim 1 to 3, it is characterized in that said Oscillating lever bearing (5) is installed on said the second axle part through a sleeve pipe (9), wherein the second axle part can slide in said sleeve pipe.
5. transmission mechanism according to claim 1 is characterized in that, the actuator of the drive division of said axle is to go up mounted component at said axle (7).
6. according to the arbitrary described transmission mechanism of claim 1 to 5, it is characterized in that, between the first axle part of said axle (7) and said gear (8) and/or between the inner ring (5c) of the second axle part of said (7) and said Oscillating lever bearing (5), bearing is housed.
7. transmission mechanism according to claim 4; It is characterized in that; On the periphery of said sleeve pipe (9), be provided with latch-up structure, it cooperates with latch-up structure on the inner ring (5c) of said Oscillating lever bearing (5), so that said inner ring (5c) only can be around said central axis rotation.
8. according to the arbitrary described transmission mechanism of claim 1 to 7, it is characterized in that said driving part is between said gear (8) and said Oscillating lever bearing (5).
9. according to the arbitrary described transmission mechanism of claim 4 to 8, it is characterized in that said sleeve pipe (9) is integrally formed with the driving element (6) of driving mechanism.
10. electric tool, it comprises according to the arbitrary described transmission mechanism of aforementioned claim.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101462790A CN102784949A (en) | 2011-05-19 | 2011-05-19 | Electric tool and transmission mechanism thereof |
| PCT/CN2012/075580 WO2012155846A1 (en) | 2011-05-19 | 2012-05-16 | Power tool and transmission mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101462790A CN102784949A (en) | 2011-05-19 | 2011-05-19 | Electric tool and transmission mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102784949A true CN102784949A (en) | 2012-11-21 |
Family
ID=47150645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101462790A Pending CN102784949A (en) | 2011-05-19 | 2011-05-19 | Electric tool and transmission mechanism thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102784949A (en) |
| WO (1) | WO2012155846A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109785981A (en) * | 2019-03-26 | 2019-05-21 | 四川华都核设备制造有限公司 | Handgrip transmission chain for safe rod drive mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203471741U (en) * | 2013-09-13 | 2014-03-12 | 王国雄 | Adapter for electric drill |
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| CN1743138A (en) * | 2004-09-03 | 2006-03-08 | 罗伯特·博世有限公司 | Electric tools with the transmission device that can between working method, change |
| GB2421459A (en) * | 2004-12-23 | 2006-06-28 | Black & Decker Inc | Transmission housing for a power tool |
| CN202129475U (en) * | 2011-05-19 | 2012-02-01 | 博世电动工具（中国）有限公司 | Electric tool and transmission mechanism thereof |
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| JP3688943B2 (en) * | 1999-08-26 | 2005-08-31 | 株式会社マキタ | Hammer drill |
| CN100491082C (en) * | 2004-11-15 | 2009-05-27 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
| EP2147753B1 (en) * | 2008-07-25 | 2017-01-18 | AEG Electric Tools GmbH | Electric tool with transmission switch |
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| CN1743138A (en) * | 2004-09-03 | 2006-03-08 | 罗伯特·博世有限公司 | Electric tools with the transmission device that can between working method, change |
| GB2421459A (en) * | 2004-12-23 | 2006-06-28 | Black & Decker Inc | Transmission housing for a power tool |
| CN202129475U (en) * | 2011-05-19 | 2012-02-01 | 博世电动工具（中国）有限公司 | Electric tool and transmission mechanism thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109785981A (en) * | 2019-03-26 | 2019-05-21 | 四川华都核设备制造有限公司 | Handgrip transmission chain for safe rod drive mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012155846A1 (en) | 2012-11-22 |
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Application publication date: 20121121 |