CN102975174A - Transmission switching device of electric hammer - Google Patents
Transmission switching device of electric hammer Download PDFInfo
- Publication number
- CN102975174A CN102975174A CN2012105312284A CN201210531228A CN102975174A CN 102975174 A CN102975174 A CN 102975174A CN 2012105312284 A CN2012105312284 A CN 2012105312284A CN 201210531228 A CN201210531228 A CN 201210531228A CN 102975174 A CN102975174 A CN 102975174A
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- China
- Prior art keywords
- bearing
- shifting part
- gear
- axle sleeve
- jackshaft
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Classifications
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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
- 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
- B25D16/006—Mode changers; Mechanisms connected thereto
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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
-
- 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
Abstract
The invention discloses a transmission switching device of an electric hammer, and the device comprises an intermediate shaft; an intermediate shaft gear, a transmission gear, swing rod bearings and an intermediate shaft sleeve are arranged on the intermediate shaft; a connecting part extends outwards from the transmission gear; the connecting part is sleeved on one end of the intermediate shaft sleeve; the swing rod bearings are respectively sleeved on the connecting part and the intermediate shaft sleeve; keyway matching structures are arranged between the other end of the intermediate shaft sleeve and the intermediate shaft, the connecting part and the swing rod bearings; a shift bearing is arranged on the peripheral side of the intermediate shaft sleeve; the inner ring of the shift bearing is the intermediate shaft sleeve, and a groove is arranged on the outer ring of the shift bearing; and a shifting mechanism is connected into the groove. The transmission switching device of the electric hammer has the beneficial effects that a transmission mechanism and the shifting mechanism stay still relatively, no friction, wear, heating or oil leakage occurs, the service life is long, the maintenance amount is small, the gear friction phenomenon is overcome, and the working efficiency is high.
Description
Technical field
The present invention relates to a kind of electric hammer, relate in particular to a kind of being located in the electric hammer, be used for making electric hammer to finish the transmission switching mechanism of impact and bore operation.
Background technology
Chinese utility model patent (the patent No.: disclose a kind of transmission mechanism for electric tool 201120173533.1), it comprises: by the axle that the driving mechanism of electric tool drives, 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 slides with respect to the bearing of trend of the first axle part along axle, is provided with the actuator that cooperatively interacts 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 cooperatively interacts between inner ring and the drive division, be provided with fork in the outer ring, fork extends in the inclined plane at slideway place.
In the structure of this transmission mechanism of electric tool, jackshaft is split-type structural, be jackshaft by the first axle part and coaxial being set together of the second axle part and consist of, between the mutually close end of these two axial regions, be provided with concave-convex fit structure, utilize concave-convex fit structure to be combined together, make power between the first axle part and the second axle part, realize transmitting.Circumferentially be socketed with regularly gear on the first axle part, the fork shift mechanism in the transmission mechanism directly realizes connecting of contact with gear, so that fork shift mechanism handsetting gear endwisely slips at the first axle part.With the electric tool of this transmission mechanism when realizing bore operation, gear is to rotate as main drive disk assembly always, and realize that with gear the fork shift mechanism that contact connects is relative static, produce a large amount of heat because of friction between fork shift mechanism and the gear, these frictional heats can cause the lubricating oil temperature in the electric tool to raise, and the mobile meeting of lubricating oil raises the electric tool bulk temperature.This one side easily makes the shell body of plastics produce distortion, also can ring the sealing effectiveness that arrives electric tool integral body by scape on the other hand, is prone to the seepage of lubricating oil, and after use a period of time, the electric hammer surface is easily dirty.In addition, shifter contacts with direct geared, and after the long-term work, serious wear between the two not only needs often to change consumable accessory, and this also can have influence on the sensitivity of fork shift mechanism work.
Summary of the invention
For overcoming defects, the technical issues that need to address of the present invention: provide a kind of transmission switching device shifter of electric hammer, the functional reliability that the application of this transmission switching device shifter can the Effective Raise electric hammer.
For solveing the technical problem, technical scheme of the present invention: a kind of transmission switching device shifter of electric hammer, comprise transmission mechanism, shifter and the knob that is connected with gearshift, transmission mechanism comprises jackshaft, jackshaft is provided with countershaft-gear, one end of jackshaft is provided with travelling gear, jackshaft is provided with Oscillating lever bearing between travelling gear and countershaft-gear, described jackshaft is socketed with middle axle sleeve at travelling gear and countershaft-gear gap, travelling gear extends outward connecting portion near a side of countershaft-gear, axle sleeve was away from an end outer circumferential side of countershaft-gear in the middle of connecting portion was socketed in gap, be socketed in to one splaying of the close travelling gear of Oscillating lever bearing the outer circumferential side of connecting portion, the Oscillating lever bearing other end is socketed in gap jackshaft and puts, between the inner peripheral surface and jackshaft of the middle axle sleeve other end, between the inner peripheral surface of middle axle sleeve one end outer peripheral face and connecting portion and be equipped with the keyway fit structure that cooperatively interacts between Oscillating lever bearing other end inner peripheral surface and the middle axle sleeve, middle axle sleeve other end outer circumferential side is provided with the displacement bearing, the displacement bearing inner race is middle axle sleeve, the displacement bearing outer ring is provided with groove, and described gearshift is connected in this groove.Gear wheel is connected with countershaft-gear, drill bit shaft respectively in the electric hammer, and gear wheel can drive drill bit shaft and rotate, and makes electric hammer realize drill mode; Fork on the Oscillating lever bearing is axially tilting with respect to Oscillating lever bearing, and fork is connected on the cylinder rod that is connected with the electric hammer drill axle, the rotation of Oscillating lever bearing, the action of pulling cylinder, thereby the conflicting model of realization electric hammer.Axle sleeve moved around to change connected mode in the transmission mechanism along jackshaft in the middle of the displacement action that knob rotation produces made by shifter, thereby realized that electric hammer switches between synchronous these the three kinds of mode of operations of conflicting model, drill mode, conflicting model and drill mode.Realize being connected of contact between shifter and the displacement bearing, no matter whether middle axle sleeve is rotating, keep relative static between the outer ring of shifter and displacement bearing, thereby not friction, wear and tear, just can not generate heat yet, fundamentally overcome problems of the prior art.
As preferably, the outer ring of described displacement bearing is axially protruding along jackshaft, and the gap between the inner peripheral surface of this extension of outer ring and the middle axle sleeve outer peripheral face is much smaller than the diameter of ball, and described groove is positioned on the outer peripheral face of this extension.This is convenient to be provided in the outer ring the joining structure with fork shift mechanism so that the outer ring of displacement bearing is relatively large.The good stability that the displacement bearing puts at jackshaft, in the middle axle sleeve rotation process, the outer ring in the displacement bearing can keep good positional stability.
As preferably, described in the middle of the internal diameter of the axle sleeve other end less than the external diameter of countershaft-gear, the external diameter of displacement bearing is greater than Oscillating lever bearing other end internal diameter.Spacing when being convenient to jackshaft and being enclosed within jackshaft and axially moving around.
The keyway fit structure both can be the singly-bound fit structure, also can be two key fit structures, also can be the cotter way fit structure, and as preferably, described keyway fit structure is the spline fitted structure.The spline fitted structure is convenient to the switching of connected mode between key and the groove, also is conducive to the stationarity of transmission.
As preferably, the ultimate range of the end face of close connecting portion one end of spline structure that described connecting portion inner peripheral surface spline structure inner end end face to the distance of the spline structure outer face of Oscillating lever bearing other end inner peripheral surface matches less than connecting portion inner peripheral surface spline structure inner end end face to middle axle sleeve and Oscillating lever bearing, the spacing between the relative both ends of the surface of two spline structures on the middle axle sleeve outer peripheral face is greater than the length of the spline structure on the Oscillating lever bearing.Move to when connecting with countershaft-gear when the jackshaft cover like this, can guarantee to throw off spline joint between Oscillating lever bearing and the middle axle sleeve, make electric hammer can realize simple drill mode.
As preferably, described connecting portion inner peripheral surface spline structure inner end end face to the minimum range of middle axle sleeve other end end face less than connecting portion inner peripheral surface spline structure inner end end face to the end end face of jackshaft spline structure near connecting portion.Move to when connecting with Oscillating lever bearing when the jackshaft cover like this, throw off spline joint between axle sleeve and the jackshaft in the middle of can guaranteeing, make electric hammer can realize simple conflicting model.
As preferably, described Oscillating lever bearing is provided with location bearing in the side near travelling gear, and the inner ring of Oscillating lever bearing and the inner ring of location bearing are connected as a single entity, and the outer ring of location bearing extends outward location-plate, and location-plate is fixedly connected with the positioning seat of electric hammer.In the Oscillating lever bearing outside location bearing that is total to inner ring with Oscillating lever bearing is set again, but so that Oscillating lever bearing can obtain circumferential rotatable shaft to the function of effective location.
As preferably, described gearshift comprises the first shifting part, the second shifting part, shackle member, bearing pin and spring, bearing pin and jackshaft are arranged in parallel, and sidewall is extended to a side respectively in the two ends of the first shifting part, the second shifting part, make the first shifting part, the second shifting part integral body all be "
" shape; bearing pin passes respectively the first shifting part with gap; the two side of the second shifting part; a sidewall of the first shifting part is between the two side of the second shifting part; another sidewall of the first shifting part is positioned at the outside of the second shifting part one sidewall; be socketed on the bearing pin gapping of spring, one end of spring is connected on the sidewall of the first shifting part, the other end of spring is connected on the sidewall of the second shifting part, be socketed on the bearing pin to one splaying of shackle member, the other end of shackle member is provided with the fork-shaped pin that matches with groove, the fork-shaped pin is connected in the groove, shackle member is between another sidewall of the first shifting part and the second shifting part one sidewall, the first shifting part extends first group of pin of " L " shape to another sidewall outside, the second shifting part extends second group of pin of " N " shape to the sidewall outside, the driving lever of described knob biasing is connected between first group of pin and the second group of pin.The rotation knob makes the driving lever of biasing produce displacement, the displacement of driving lever all be by spring pass to shackle member promote in the middle of axle sleeve axially move around along jackshaft, change the annexation between the spline fitted structure of spline structure that jackshaft puts and jackshaft, Oscillating lever bearing, connecting portion, thereby realize boring, hammer, the function of not only boring but also hammering into shape.Because the elastic force of spring is handling better, response speed is very quick, axle sleeve action in the middle of moment can promote, so that the tooth phenomenon can not appear stinging in spline fitted structure recovery when engagement, can prolong the service life of each counterpart, simultaneously also so that need not the operating personnel during gearshift and manually adjust, can improve operating efficiency, guarantee operating personnel's personal safety.
As preferably, described bearing pin also is provided with keeper between a sidewall of the first shifting part and another sidewall of the second shifting part, be socketed on the bearing pin to a splaying of keeper, and the other end of keeper is provided with the serrate slot that matches with the countershaft-gear profile of tooth.Electric hammer is when being in the state of hammer, and the serrate slot on the keeper is meshed with countershaft-gear, guarantees that countershaft-gear can not rotate, and improves work quality.
Therefore, beneficial effect of the present invention: one, since idler gear in transmission process not can and fork shift mechanism between produce friction, the frictional heat that clutch shaft bearing produces in rotation process is little, electric hammer with boring work pattern the time, can not produce a large amount of heat in the inside of electric hammer, this helps the maintenance of electric hammer plastic casing body, and electric hammer integral body is difficult for hot.Because lubricating oil can not promote higher temperature in the electric hammer course of work, the sealing property of the inner liquid sealing structure of electric hammer can not be subject to larger impact, electric hammer is difficult for occuring leakage of oil, in the service life of this energy Effective Raise electric hammer, does not need often electric hammer to be keeped in repair.Fork shift mechanism can not produce friction with idler gear in the electric hammer course of work, the wear extent of fork shift mechanism is little, thereby can effectively guarantee the work sensitivity of fork shift mechanism.
Two, simple in structure, reasonable in design, easily manufactured, need not the electric hammer stall and can realize the electric hammer gear shift, not only can avoid beating the generation of tooth phenomenon, and ensure operating personnel's personal safety, raise labour productivity and work quality.
Description of drawings
Fig. 1 is the electric hammer cross-sectional schematic with this transmission switching device shifter;
Fig. 2 is the schematic perspective view of this transmission switching device shifter;
Fig. 3 is transmission mechanism cross-sectional schematic of the present invention.
Among the figure: transmission mechanism 1, shifter 2, positioning seat 3, jackshaft 4, countershaft-gear 5, displacement bearing 6, middle axle sleeve 7, Oscillating lever bearing 8, location bearing 9, travelling gear 10, bearing pin 11, the first group of pin 12, fork-shaped pin 13, the second group of pin 14, shackle member 15, the first shifting part 16, spring 17, the second shifting part 18, keeper 19, serrate slot 20, groove 21, connecting portion 22, location-plate 23, extension 24.
The specific embodiment
Below by preferred embodiment, and in conjunction with Figure of description technical scheme of the present invention is further described in detail:
Embodiment: as shown in Figure 1, the transmission switching device shifter of electric hammer of the present invention is arranged in the electric hammer, comprises transmission mechanism 1, shifter 2 and the knob (not shown) that is connected with shifter 2.
Such as Fig. 2, shown in Figure 3, transmission mechanism 1 comprises jackshaft 4, jackshaft 4 is provided with the countershaft-gear 5 that is connected as a single entity with jackshaft 4, one end of jackshaft 4 is provided with travelling gear 10, jackshaft 4 is provided with Oscillating lever bearing 8 between travelling gear 10 and countershaft-gear 5, described jackshaft 4 is axle sleeve 7 in the middle of travelling gear 10 and countershaft-gear 5 gaps are socketed with, travelling gear 10 extends outward connecting portion 22 near a side of countershaft-gear 5, axle sleeve 7 was away from an end outer circumferential side of countershaft-gear 5 in the middle of connecting portion 22 was socketed in gap, be socketed in to one splaying of Oscillating lever bearing 8 close travelling gears 10 outer circumferential side of connecting portion 22, Oscillating lever bearing 8 other ends are socketed on the middle axle sleeve 7 with gap, between the inner peripheral surface and jackshaft 4 of middle axle sleeve 7 other ends, between the inner peripheral surface of middle axle sleeve 7 one end outer peripheral faces and connecting portion 22 and be equipped with the spline fitted structure that cooperatively interacts between Oscillating lever bearing 8 other end inner peripheral surfaces and the middle axle sleeve 7, the spline structure that connecting portion 22 inner peripheral surface spline structure inner end end faces to the distance of the spline structure outer face of Oscillating lever bearing 8 other end inner peripheral surfaces matches less than connecting portion 22 inner peripheral surface spline structure inner end end faces to middle axle sleeve 7 and Oscillating lever bearing 8 is near the ultimate range of the end face of connecting portion 22 1 ends, spacing between the relative both ends of the surface of two spline structures on middle axle sleeve 7 outer peripheral faces is greater than the length of the spline structure on the Oscillating lever bearing 8, connecting portion 22 inner peripheral surface spline structure inner end end faces to the minimum range of middle axle sleeve 7 other end end faces less than connecting portion 22 inner peripheral surface spline structure inner end end faces to the end end face of jackshaft 4 spline structures near connecting portion 22, the internal diameter of middle axle sleeve 7 other ends is less than the external diameter of countershaft-gear 5, middle axle sleeve 7 other end outer circumferential sides are provided with displacement bearing 6, displacement bearing 6 inner rings are middle axle sleeve 7, axially stretch out to Oscillating lever bearing 8 one sides along jackshaft 4 outer ring of described displacement bearing 6, gap between the inner peripheral surface of this extension 24 of outer ring and middle axle sleeve 7 outer peripheral faces is much smaller than the diameter of ball, the external diameter of displacement bearing 6 is greater than Oscillating lever bearing 8 other end internal diameters, and described groove 21 is positioned on the outer peripheral face of this extension 24.
As shown in Figure 2, described gearshift comprises the first shifting part 16, the second shifting part 18, shackle member 15, bearing pin 11 and spring 17, bearing pin 11 is arranged in parallel with jackshaft 4, sidewall is extended to a side respectively in the two ends of the first shifting part 16, the second shifting part 18, make the first shifting part 16, the second shifting part 18 integral body all be "
" shape; bearing pin 11 passes respectively the first shifting part 16 with gap; the two side of the second shifting part 18; sidewall of the first shifting part 16 is between the two side of the second shifting part 18; another sidewall of the first shifting part 16 is positioned at the outside of the second shifting part 18 1 sidewalls; spring 17 is socketed on the bearing pin 11 with gap, one end of spring 17 is connected on the sidewall of the first shifting part 16, the other end of spring 17 is connected on the sidewall of the second shifting part 18, be socketed on the bearing pin 11 to one splaying of shackle member 15, the other end of shackle member 15 is provided with the fork-shaped pin 13 that matches with groove 21, fork-shaped pin 13 is connected in the groove 21, shackle member 15 is between the first shifting part 16 another sidewalls and the second shifting part 18 1 sidewalls, the first shifting part 16 extends first group of pin 12 of " L " shape to another sidewall outside, the second shifting part 18 extends second group of pin 14 of " N " shape to the sidewall outside, the driving lever of described knob biasing is connected between first group of pin 12 and the second group of pin 14.Bearing pin 11 also is provided with keeper 19 between a sidewall of the first shifting part 16 and the second shifting part 18 another sidewalls, be socketed on the bearing pin 11 to a splaying of keeper 19, and the other end of keeper 19 is provided with the serrate slot 20 that matches with countershaft-gear 5 profiles of tooth.
Such as Fig. 1, Fig. 2, shown in Figure 3, Oscillating lever bearing 8 is provided with location bearing 9 in the side near travelling gear 10, the inner ring of the inner ring of Oscillating lever bearing 8 and location bearing 9 is connected as a single entity, and the outer ring of location bearing 9 extends outward location-plate 23, and location-plate 23 is fixedly connected with the positioning seat 3 of electric hammer.
In the electric hammer, countershaft-gear 5 is meshed with gear wheel on being fixedly connected on the electric hammer drill axle, and the fork on the Oscillating lever bearing 8 is connected with cylinder on being connected to the electric hammer drill axle.
The transmission switching device shifter operation principle of electric hammer is: the rotation knob makes the driving lever of biasing produce displacement, the displacement that driving lever produces passes to the first shifting part 16 by first group of pin 12, the first shifting part 16 passes to the second shifting part 18 by spring 17, the second shifting part 18 passes to fork-shaped pin 13 by shackle member 15, fork-shaped pin 13 is connected in the groove 21 of displacement bearing 6, thereby axle sleeve 7 is towards Oscillating lever bearing 8 one side shiftings in the middle of promoting, and keeper 19 is done mobile in the same way with middle axle sleeve 7 under the drive of the second shifting part 18 simultaneously.Perhaps, the displacement that driving lever produces passes to the second shifting part 18 by second group of pin 14, the second shifting part 18 passes to the first shifting part 16 by spring 17, the first shifting part 16 passes to fork-shaped pin 13 by shackle member 15, fork-shaped pin 13 is connected in the groove 21 of displacement bearing 6, thereby axle sleeve 7 is towards countershaft-gear 5 one side shiftings in the middle of promoting, and keeper 19 is done mobile in the same way with middle axle sleeve 7 under the drive of the first shifting part 16 simultaneously.When jackshaft cover 7 moves to when connecting with Oscillating lever bearing 8, throw off spline joint between middle axle sleeve 7 and the jackshaft 4, serrate slot 20 on the keeper 19 is meshed with countershaft-gear 5, both keep engagement 7 on middle axle sleeve and Oscillating lever bearing 8, travelling gear 10, the power of travelling gear 10 just only passes to Oscillating lever bearing 8 like this, and the fork on the Oscillating lever bearing 8 promotes the electric hammer drill axle and realizes simple conflicting model; When jackshaft cover 7 moves to when connecting with countershaft-gear 5, throw off spline joint between Oscillating lever bearing 8 and the middle axle sleeve 7, serrate slot 20 on the keeper 19 also is disengaged from engagement status with countershaft-gear 5, both keep engagement 7 on middle axle sleeve and jackshaft 4, travelling gear 10, the power of travelling gear 10 just only passes to jackshaft 4 like this, jackshaft 4 passes to the gear wheel that is meshed with countershaft-gear 5 by countershaft-gear 5, and the rotation of gear wheel promotes the electric hammer drill axle and realizes simple drill mode; When jackshaft cover 7 mediates state, middle axle sleeve 7 all is in engagement with jackshaft 4, Oscillating lever bearing 8, travelling gear 10 respectively, serrate slot 20 on the keeper 19 is in disengaged condition with countershaft-gear 5, like this so that the electric hammer drill axle can realize hammering into shape not only but also the drill jig formula.In addition, when middle axle sleeve 7 rotated, displacement bearing 6 outer rings kept relative static with fork-shaped pin 13.
Above-described embodiment is a kind of preferred version of the present invention, is not the present invention is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
The content that is not described in detail in this specification belongs to the known prior art of those skilled in the art.
Claims (9)
1. the transmission switching device shifter of an electric hammer, comprise transmission mechanism, shifter and the knob that is connected with gearshift, transmission mechanism comprises jackshaft, jackshaft is provided with countershaft-gear, one end of jackshaft is provided with travelling gear, jackshaft is provided with Oscillating lever bearing between travelling gear and countershaft-gear, it is characterized in that: described jackshaft is socketed with middle axle sleeve at travelling gear and countershaft-gear gap, travelling gear extends outward connecting portion near a side of countershaft-gear, axle sleeve was away from an end outer circumferential side of countershaft-gear in the middle of connecting portion was socketed in gap, be socketed in to one splaying of the close travelling gear of Oscillating lever bearing the outer circumferential side of connecting portion, the Oscillating lever bearing other end is socketed in gap jackshaft and puts, between the inner peripheral surface and jackshaft of the middle axle sleeve other end, between the inner peripheral surface of middle axle sleeve one end outer peripheral face and connecting portion and be equipped with the keyway fit structure that cooperatively interacts between Oscillating lever bearing other end inner peripheral surface and the middle axle sleeve, middle axle sleeve other end outer circumferential side is provided with the displacement bearing, the displacement bearing inner race is middle axle sleeve, the displacement bearing outer ring is provided with groove, and described gearshift is connected in this groove.
2. the transmission switching device shifter of electric hammer according to claim 1, it is characterized in that: the outer ring of described displacement bearing is axially protruding along jackshaft, gap between the inner peripheral surface of this extension of outer ring and the middle axle sleeve outer peripheral face is much smaller than the diameter of ball, and described groove is positioned on the outer peripheral face of this extension.
3. the transmission switching device shifter of electric hammer according to claim 2 is characterized in that: the internal diameter of the axle sleeve other end is less than the external diameter of countershaft-gear in the middle of described, and the external diameter of displacement bearing is greater than Oscillating lever bearing other end internal diameter.
4. according to claim 1 and 2 or the transmission switching device shifter of 3 described electric hammers, it is characterized in that: described keyway fit structure is the spline fitted structure.
5. the transmission switching device shifter of electric hammer according to claim 4, it is characterized in that: the ultimate range of the end face of close connecting portion one end of spline structure that described connecting portion inner peripheral surface spline structure inner end end face to the distance of the spline structure outer face of Oscillating lever bearing other end inner peripheral surface matches less than connecting portion inner peripheral surface spline structure inner end end face to middle axle sleeve and Oscillating lever bearing, the spacing between the relative both ends of the surface of two spline structures on the middle axle sleeve outer peripheral face is greater than the length of the spline structure on the Oscillating lever bearing.
6. the transmission switching device shifter of electric hammer according to claim 4 is characterized in that: described connecting portion inner peripheral surface spline structure inner end end face to the minimum range of middle axle sleeve other end end face less than connecting portion inner peripheral surface spline structure inner end end face to the end end face of jackshaft spline structure near connecting portion.
7. the transmission switching device shifter of electric hammer according to claim 1, it is characterized in that: described Oscillating lever bearing is provided with location bearing in the side near travelling gear, the inner ring of Oscillating lever bearing and the inner ring of location bearing are connected as a single entity, the outer ring of location bearing extends outward location-plate, and location-plate is fixedly connected with the positioning seat of electric hammer.
8. according to claim 1 and 2 or the transmission switching device shifter of 3 or 7 described electric hammers, it is characterized in that: described gearshift comprises the first shifting part, the second shifting part, shackle member, bearing pin and spring, bearing pin and jackshaft are arranged in parallel, sidewall is extended to a side respectively in the two ends of the first shifting part, the second shifting part, make the first shifting part, the second shifting part integral body all be "
" shape; bearing pin passes respectively the first shifting part with gap; the two side of the second shifting part; a sidewall of the first shifting part is between the two side of the second shifting part; another sidewall of the first shifting part is positioned at the outside of the second shifting part one sidewall; be socketed on the bearing pin gapping of spring, one end of spring is connected on the sidewall of the first shifting part, the other end of spring is connected on the sidewall of the second shifting part, be socketed on the bearing pin to one splaying of shackle member, the other end of shackle member is provided with the fork-shaped pin that matches with groove, the fork-shaped pin is connected in the groove, shackle member is between another sidewall of the first shifting part and the second shifting part one sidewall, the first shifting part extends first group of pin of " L " shape to another sidewall outside, the second shifting part extends second group of pin of " N " shape to the sidewall outside, the driving lever of described knob biasing is connected between first group of pin and the second group of pin.
9. the transmission switching device shifter of electric hammer according to claim 8, it is characterized in that: described bearing pin also is provided with keeper between a sidewall of the first shifting part and another sidewall of the second shifting part, be socketed on the bearing pin to one splaying of keeper, the other end of keeper is provided with the serrate slot that matches with the countershaft-gear profile of tooth.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531228.4A CN102975174B (en) | 2012-12-11 | 2012-12-11 | Transmission switching device of electric hammer |
| PCT/CN2013/085366 WO2014090041A1 (en) | 2012-12-11 | 2013-10-17 | Transmission switching device of electric hammer |
| EP13840136.9A EP2767367B1 (en) | 2012-12-11 | 2013-10-17 | Transmission switching device of electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210531228.4A CN102975174B (en) | 2012-12-11 | 2012-12-11 | Transmission switching device of electric hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102975174A true CN102975174A (en) | 2013-03-20 |
| CN102975174B CN102975174B (en) | 2015-07-08 |
Family
ID=47849670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210531228.4A Active CN102975174B (en) | 2012-12-11 | 2012-12-11 | Transmission switching device of electric hammer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2767367B1 (en) |
| CN (1) | CN102975174B (en) |
| WO (1) | WO2014090041A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090041A1 (en) * | 2012-12-11 | 2014-06-19 | 浙江奔宇工具有限公司 | Transmission switching device of electric hammer |
| CN104455396A (en) * | 2014-11-17 | 2015-03-25 | 张家港市创基机械设备制造有限公司 | Gearshift mechanism in four-function electric hammer |
| CN104455397A (en) * | 2014-11-17 | 2015-03-25 | 张家港市创基机械设备制造有限公司 | Gear shift mechanism used in three-function electric hammer |
| CN107627263A (en) * | 2017-09-30 | 2018-01-26 | 苏州宝时得电动工具有限公司 | Electric hammer |
| CN107891402A (en) * | 2018-01-03 | 2018-04-10 | 尚才平 | The gearshift of three function electric hammer |
| CN112296946A (en) * | 2019-07-23 | 2021-02-02 | 南京德朔实业有限公司 | Electric hammer |
| CN115045995A (en) * | 2022-05-27 | 2022-09-13 | 浙江东立电器有限公司 | Gear adjusting device and adjusting method thereof |
| CN115199739A (en) * | 2022-05-27 | 2022-10-18 | 浙江东立电器有限公司 | Gear adjusting device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942762A (en) * | 2015-06-05 | 2015-09-30 | 吴志明 | Electric hammer |
| CN109555792B (en) * | 2018-12-05 | 2023-10-13 | 浙江亚特电器股份有限公司 | Electric hammer clutch device |
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| CN202318260U (en) * | 2011-05-23 | 2012-07-11 | 博世电动工具（中国）有限公司 | Electric tool and transmission switching mechanism thereof |
| CN102794751B (en) * | 2011-05-23 | 2017-02-01 | 博世电动工具（中国）有限公司 | Electric tool and transmission switching mechanism thereof |
| CN102975174B (en) * | 2012-12-11 | 2015-07-08 | 浙江奔宇工具有限公司 | Transmission switching device of electric hammer |
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- 2013-10-17 EP EP13840136.9A patent/EP2767367B1/en not_active Not-in-force
- 2013-10-17 WO PCT/CN2013/085366 patent/WO2014090041A1/en active Application Filing
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| DE2820128A1 (en) * | 1978-05-09 | 1979-11-22 | Bosch Gmbh Robert | CRAFT MACHINE |
| 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 |
| CN1743138B (en) * | 2004-09-03 | 2011-11-16 | 罗伯特·博世有限公司 | Power tool comprising a drive that can be switched over between operating modes |
| CN101100006A (en) * | 2006-06-12 | 2008-01-09 | 罗伯特·博世有限公司 | Hammer drill and/or impact hammer |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014090041A1 (en) * | 2012-12-11 | 2014-06-19 | 浙江奔宇工具有限公司 | Transmission switching device of electric hammer |
| CN104455396A (en) * | 2014-11-17 | 2015-03-25 | 张家港市创基机械设备制造有限公司 | Gearshift mechanism in four-function electric hammer |
| CN104455397A (en) * | 2014-11-17 | 2015-03-25 | 张家港市创基机械设备制造有限公司 | Gear shift mechanism used in three-function electric hammer |
| CN104455397B (en) * | 2014-11-17 | 2016-09-14 | 张家港市创基机械设备制造有限公司 | Shifter in three function electric hammer |
| CN107627263A (en) * | 2017-09-30 | 2018-01-26 | 苏州宝时得电动工具有限公司 | Electric hammer |
| CN107627263B (en) * | 2017-09-30 | 2023-11-10 | 苏州宝时得电动工具有限公司 | Electric hammer |
| CN107891402A (en) * | 2018-01-03 | 2018-04-10 | 尚才平 | The gearshift of three function electric hammer |
| CN112296946A (en) * | 2019-07-23 | 2021-02-02 | 南京德朔实业有限公司 | Electric hammer |
| CN112296946B (en) * | 2019-07-23 | 2022-03-18 | 南京德朔实业有限公司 | Electric hammer |
| CN115045995A (en) * | 2022-05-27 | 2022-09-13 | 浙江东立电器有限公司 | Gear adjusting device and adjusting method thereof |
| CN115199739A (en) * | 2022-05-27 | 2022-10-18 | 浙江东立电器有限公司 | Gear adjusting device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2767367A4 (en) | 2015-10-14 |
| EP2767367A1 (en) | 2014-08-20 |
| EP2767367B1 (en) | 2016-12-07 |
| CN102975174B (en) | 2015-07-08 |
| WO2014090041A1 (en) | 2014-06-19 |
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