CN102632481B - Electric hammer - Google Patents
Electric hammer Download PDFInfo
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- CN102632481B CN102632481B CN201110039841.XA CN201110039841A CN102632481B CN 102632481 B CN102632481 B CN 102632481B CN 201110039841 A CN201110039841 A CN 201110039841A CN 102632481 B CN102632481 B CN 102632481B
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- clutch
- jackshaft
- clutch part
- rotation
- operating means
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Abstract
The invention provides an electric hammer. The electric hammer comprises an enclosure, a motor, a transmission mechanism, a clutching device and an operating device, wherein the enclosure is used for supporting a tool maintaining part, the motor is placed in the enclosure, and the transmission mechanism ensures a rotation transferring pair tool of the motor to rotate and/or impact; the transmission mechanism comprises a middle shaft, the middle shaft is provided with a rotation transferring part and an impaction transferring part, and the rotation transferring part and the impulsion transferring part can respectively solely rotate independently of the middle shaft; the clutching device is provided with a first clutching part used for ensuring the rotation transferring part and the middle shaft to rotate integrally, and a second clutching part used for ensuring the impulsion transferring part and the middle shaft to rotate integrally; and the operating device can carry out operation on the clutching device from the outer side of the enclosure, wherein the first clutching part and the second clutching part can be relatively independently toggled through the operating device respectively so as to move along the axial direction of the middle shaft. According to the invention, the clutching device has no friction with the operating device in each gear, the machine life is prolonged, the structure of the complete machine is compact, the function is easy to realize, and the use is reliable.
Description
Technical field
The present invention relates to a kind of electric hammer that can the processing head transmission on top be rotated and/or be impacted.
Background technology
Electric hammer again counterweight bores, and is that widely used a kind of cutter is cut instrument.Electric hammer is to drive piston reciprocating air in a cylinder by transmission mechanism, the cylinder inner air pressure cycle changes the top that drives the hammer in cylinder back and forth to hit drill bit, make drill bit when rotating, also be subject to the reciprocal hammering campaign that a direction is parallel to drill bit, to realize strike, drilling function simultaneously.
With regard to electric hammer, widely know and have following structure, as shown in No. 2828657th, communique special permission as of the present invention in day, in housing, front portion is supported with rotating main shaft (front end tool keeper), this main shaft can keep processing head at front end, in housing, rear portion is provided with beater mechanism, this beater mechanism is impacted processing head via temporary location indirectly by reciprocating impact unit, in lower housing portion, in the mode parallel with front end tool keeper, be supported with rotating jackshaft, the rotation of this jackshaft for transmitting motor output shaft, the front portion of jackshaft is provided with the pinion (rotation transmission part: be provided with motion converter parts (impact transference part part) at the rear portion of jackshaft with the parts engagement of that side of front end tool keeper, these motion converter parts for by the rotational transform of jackshaft for seesawing and being delivered to beater mechanism: between pinion and motion converter parts, be provided with clutch components, this clutch components can and can slide along fore-and-aft direction with the rotation of jackshaft one.In other words, by from hull outside slide clutch components, make pinion and/or motion converter parts and clutch components clutch, can select thus following several pattern, electric drill pattern, only engages clutch components with pinion, only transmit rotation: electric hammer pattern to processing head; Clutch components is engaged with pinion, motion converter parts simultaneously, to processing head transmission, rotate and impact: electric pick pattern, clutch components is only engaged with motion converter parts, to processing head, only transmit impact.
In above-mentioned this electric hammer, due to when clutch components engages with its counterpart, exist relatively consistent pawl because mutually interfering the situation that can not engage swimmingly, therefore, in electric hammer, be provided with elastomeric element, for clutch components is engaged with counterpart through sliding under the effect of elastic force.As shown in No. 2828657th, above-mentioned Japanese Gazette of Patent for Invention special permission, by being arranged on the helical spring on jackshaft, to pinion side, clutch components is loaded, so that clutch components can engage with pinion immediately when rotating.
But, if adopt as described above a clutch and spring is set, load contact all the time between clutch and the parts of operated clutch under spring pressure, therefore, when working, machine can produce friction, wearing and tearing and a large amount of heat, thereby cause casing temperature to rise, and affect machine life.
Summary of the invention
The defect existing for above-mentioned prior art, the invention provides a kind of electric hammer, when the parts of its arrangement of clutch and its pairing carry out clutch state switching, can by operating means, be controlled relatively independently, operating means can not contact with the rotating part of arrangement of clutch, reduces the friction, the wearing and tearing that in machine work, produce.
For achieving the above object, the present invention is by the following technical solutions:
An electric hammer, comprises: one is supported with the casing of instrument retaining part; One is placed in the motor in described casing; One is transmitted into the transmission mechanism to the rotation of described instrument and/or impact by the rotation of described motor; Described transmission mechanism comprises a jackshaft, is provided with rotation transmission part and impact transference part part on jackshaft, and described rotation transmission part and described impact transference part part can be independent of respectively described jackshaft and rotate separately; One arrangement of clutch, has the first clutch part that makes described rotation transmission part and described jackshaft unitary rotation, and makes the second clutch part of described impact transference part part and described jackshaft unitary rotation; One operating means that can operate described arrangement of clutch from described casing; Wherein: described the first clutch part and described the second clutch part can be stirred and be moved on the axis direction along described jackshaft by described operating means respectively relatively independently.
Described the first clutch part and the second clutch part are separately positioned on separate the first clutch part and the second clutch part.
Described the first clutch part and the second clutch part are placed in respectively the both sides of the actuation part of described operating means.
In the time of on the position of described the first clutch part in making described rotation transmission part and described jackshaft unitary rotation, described operating means and described the first clutch part are contactless, in the time of on the position of described the second clutch part in making described impact transference part part and described jackshaft unitary rotation, described operating means and described the second clutch part are contactless, in the time of on the position of described the first clutch part in making described rotation transmission part and described jackshaft unitary rotation and on the position of described the second clutch part in making described impact transference part part and described jackshaft unitary rotation, described operating means and described first, the second clutch part does not all contact.
The mode that described the first clutch part is sentenced splined engagement in the first clutch part can not circumferentially rotate, can axially movably be arranged on described rotation transmission part.
The mode that described the second clutch part is sentenced splined engagement in the second clutch part can not circumferentially rotate, can axially movably be arranged on described impact transference part part.
Described jackshaft be provided with can with described first, second clutch part on the spline of spline adaptation.
On described first, second clutch part, acting on respectively having makes described first, second clutch part to the flexible member of the position bias voltage with described jackshaft splined engagement.
The spline position of described jackshaft is provided with can be to the spacing limiting section of described first, second clutch part.
Described the first clutch part is allocated on the position that makes described rotation transmission part disengaging and described jackshaft unitary rotation by described operating means.
Described the second clutch part is allocated on the position that makes described impact transference part part disengaging and described jackshaft unitary rotation by described operating means.
By adopting above technical scheme, electric hammer of the present invention, first, second clutch part of its arrangement of clutch can be controlled by operating means relatively independently, when operating means by one of them clutch part dial from engage position time, and not necessarily link with another clutch part wherein, thereby can be with described another clutch part in bonding station contactless, electric hammer product of the present invention is sought loopholes in realization---the first clutch part makes rotation transmission part and jackshaft unitary rotation in bonding station; Hammer drill shelves---first, second clutch part, all in bonding station, makes rotation transmission part, impact transference part part and the equal unitary rotation of jackshaft; Adjust shelves and cutter shelves---the second clutch part when bonding station makes the different shift function of impact transference part part and jackshaft unitary rotation, each gear arrangement of clutch all with operating means without friction, raising service life of a machine.Arrangement of clutch adopt two independent clutch parts respectively clutch bore functions and hammer function, operating means is simple and reliable, can directly stir by knob pin etc., this mechanism, for electric hammer, makes compact integral structure, function is easy to realize and uses reliable.
Accompanying drawing explanation
Fig. 1 is that electric hammer of the present invention is demonstrating its in-built schematic diagram except after decapsidate;
Fig. 2 is the local longitudinal sectional view of the electric hammer under electric drill pattern, wherein, on the position of the first clutch part of arrangement of clutch in engaging, rotation transmission part and jackshaft unitary rotation, and the second clutch part is dialled the position of leaving joint by operating means, impact transference part part departs from the state with jackshaft unitary rotation;
Fig. 3 is the local longitudinal sectional view of the electric hammer under hammer drill pattern, wherein, first, second clutch part of arrangement of clutch all on the position in engaging, is rotated, impact transference part part all with jackshaft unitary rotation;
Fig. 4 is the local longitudinal sectional view of the electric hammer under electric cutter pattern, wherein, on the position of the second clutch part of arrangement of clutch in engaging, impact transference part part and jackshaft unitary rotation, and the first clutch part is dialled the position of leaving joint by operating means, rotation transmission part departs from the state with jackshaft unitary rotation;
Fig. 5 is the partial view that shows arrangement of clutch.
The specific embodiment
Below with reference to the accompanying drawings the specific embodiment of the present invention is described in further detail.
As shown in Figures 1 to 4, it is the internal structure schematic diagram of the preferred a kind of electric hammer of the present invention, wherein, for clarity, the casing of electric hammer is removed, the front support of the main shaft 20 in casing has rotating instrument retaining part 21, front end at this instrument retaining part 21 can be installed the instrument as processing head, this instrument can be drill bit, screwdriver or spade chisel etc., rear portion in casing is provided with motor (not shown), in the side paralleling with instrument retaining part 21, be supported with jackshaft 1, jackshaft 1 is rotated by the output shaft of motor.
In the front portion of jackshaft 1, be provided with the pinion 2 as rotation transmission part, pinion 2 is arranged on jackshaft 1 rotationally, and mesh with the gear wheel 3 of being located on main shaft 20, when arrangement of clutch 30 can not circumferentially be consolidated itself and jackshaft 1 rotationally, can be with jackshaft 1 unitary rotation, thus the rotation from jackshaft 1 is delivered to instrument retaining part 21; At the rear portion of jackshaft 1, be provided with the Oscillating lever bearing 11 as impact transference part part, the telescopic inner ring 12 of hub shape that is of Oscillating lever bearing 11 is arranged on jackshaft 1 rotationally, when arrangement of clutch 30 can not circumferentially be consolidated the inner ring of Oscillating lever bearing 11 12 and jackshaft 1 rotationally, Oscillating lever bearing 11 and jackshaft 1 unitary rotation, and rotatablely moving of inner ring 12 changed into the swing of the outer ring 13 with fork shape, and by the hammer 23 in cylinder 22, the continuous rotation motion of jackshaft 1 is converted to the reciprocating linear of tool heads is impacted.
Between pinion 2 and Oscillating lever bearing 11, be provided with arrangement of clutch 30, referring to Fig. 5, arrangement of clutch 30 comprises the first clutch part 6 and second clutch part 8 that can relatively separate, the first clutch part 6 and pinion 2 are with spline 61, 201 can not circumferentially rotate, can axially movably connect, between the first back-up ring 4 and the flange of the first clutch part 6, be provided with the first spring 5, the inner ring 12 of the second clutch part 8 and Oscillating lever bearing 11 is with spline 81, 111 can not circumferentially rotate, can axially movably connect, between the second back-up ring 10 and the flange of the second clutch part 8, be provided with the second spring 9, jackshaft 1 is provided with can be with first, the second clutch part 6, 8 spline 61, 81 splines 101 that coordinate, first, the second clutch part 6, 8 form respectively first at the position coordinating with jackshaft 1, the second clutch part, on jackshaft 1, being also provided with can be to first, the second clutch part 6, 8 spacing in the axial direction limiting sections 102.
The clutch state of arrangement of clutch 30 can be controlled by an operating means operating from casing 7, first, the second clutch part 6, 8 first, the second spring 5, under 9 effect, be biased to respectively on the position engaging with jackshaft 11, operating means 7 can be by first, the second clutch part 6, 8 one of them dial individually from its bonding station, preferably, operating means 7 for stirring the part of clutch part, be placed in first, the second clutch part 6, between 8, and, in the time of on the clutch part of the first clutch part 6 position in making pinion 2 and jackshaft 1 unitary rotation, stirring partly and the first clutch part 6 disengagements (referring to Fig. 2) of operating means 7, in the time of on the clutch part of the second clutch part 8 position in making oscillation bearing 11 and jackshaft 1 unitary rotation, stirring partly and the second clutch part 8 disengagements (referring to Fig. 4) of operating means, in the time of on the clutch part of the first clutch part 6 position in making pinion 2 and jackshaft 1 unitary rotation and on the position of the clutch part of the second clutch part 8 in making Oscillating lever bearing 11 and jackshaft 1 unitary rotation, operating means stir part and first, the second clutch part 6, 8 all throw off (referring to Fig. 3).
Below will be to electric hammer of the present invention under different working modes, the course of action of arrangement of clutch is described.
As shown in Figure 2, under electric drill pattern, operating means 7 by 8 groups of the second clutch parts of arrangement of clutch 30 from jackshaft 1, now, the first clutch part 6 is still interlocked with jackshaft 1 and pinion 2 under the effect of the first spring 5, thereby pinion 2 can be delivered to the rotation of jackshaft 1 with jackshaft 1 unitary rotation on the gear wheel 3 and tool support part 21 being engaged with, realize the rotating drive to instrument, the function of seeking loopholes.
As shown in Figure 3, under hammer drill pattern, operating means 7 is in first, the second clutch part 6, 8 centre, any one clutch part is not produced and stirs loading, first, the second clutch part 6, 8 respectively first, the second spring 5, 9 effect under by jackshaft 1 and pinion 2, jackshaft 1 and Oscillating lever bearing 11 interlocks, jackshaft 1 passes through the first clutch part 6 transmitting torques to pinion 2, in the rotation passing to the gear wheel 3 implementation tool support sections 21 of its engagement, simultaneously, jackshaft 1 passes through the second clutch part 8 transmitting torques to Oscillating lever bearing 11, drive hammer 23 reciprocating motions in cylinder 22 to realize impact function.
As shown in Figure 4, under electricity cutter pattern, operating means 7 by 6 groups of the first clutch parts of arrangement of clutch 30 from jackshaft 1, now, the second clutch part 8 under the effect of the second spring 9 with jackshaft 1 and Oscillating lever bearing 11 interlocks, jackshaft 1 to Oscillating lever bearing 11, drives hammer 23 reciprocating impacts in cylinder 22 to realize cutter shelves function by the second clutch part 8 transmitting torques.Under this kind of pattern, due to pinion 2 jackshaft 1 independent rotation relatively, when tool heads being installed on support section 21, the installation site of capable of regulating tool heads, therefore also can realize the function of adjusting shelves.
The arrangement of clutch of electric hammer of the present invention is not limited to two the independently clutch parts that are made as in above-mentioned preferred embodiment, in other embodiments, as long as before meeting, latter two clutch part do not moved in the axial direction in linkage and can be relatively independent be moved, thereby can guarantee that operating means at least can partly depart from wherein that in the clutch in bonding station side, reduce friction, the structure of wearing and tearing is all within the scope of design of the present invention, of the present invention first, the second clutch part and jackshaft and pinion, the clutch part of Oscillating lever bearing is also not limited to the spline fitted form upwards arranging in week in above-mentioned embodiment, also can be on corresponding adjacent end face, to be provided with the pawl of the sealed cooperation of clutch, it is the structure of the end face clutch on ordinary meaning, in addition, very significantly, of the present invention before (first), rear (second) clutch part when being reversed from bonding station, the same part of stirring of public manipulation device, design ingenious, realize easily and compact conformation.
Claims (1)
1. an electric hammer, comprises:
One is supported with the casing of instrument retaining part;
One is placed in the motor in described casing;
One is transmitted into the transmission mechanism to the rotation of described instrument and/or impact by the rotation of described motor;
Described transmission mechanism comprises a jackshaft, is provided with rotation transmission part and impact transference part part on jackshaft, and described rotation transmission part and described impact transference part part can be independent of respectively described jackshaft and rotate separately;
One arrangement of clutch, has the first clutch part that makes described rotation transmission part and described jackshaft unitary rotation, and makes the second clutch part of described impact transference part part and described jackshaft unitary rotation;
One operating means that can operate described arrangement of clutch from described casing;
Described the first clutch part and described the second clutch part can be controlled and be moved on the axis direction along described jackshaft by described operating means respectively relatively independently, described the first clutch part and the second clutch part are separately positioned on separate the first clutch part and the second clutch part, described operating means is partly placed between described the first clutch part and the second clutch part, in the time of on the position of described the first clutch part in making described rotation transmission part and described jackshaft unitary rotation, described operating means and described the first clutch part are contactless, in the time of on the position of described the second clutch part in making described impact transference part part and described jackshaft unitary rotation, described operating means and described the second clutch part are contactless, in the time of on the position of described the first clutch part in making described rotation transmission part and described jackshaft unitary rotation and on the position of described the second clutch part in making described impact transference part part and described jackshaft unitary rotation, described operating means and described first, the second clutch part does not all contact, it is characterized in that: the mode that described the first clutch part is sentenced splined engagement in the first clutch part can not circumferentially be rotated, can be axially movably arranged on described rotation transmission part, the mode that described the second clutch part is sentenced splined engagement in the second clutch part can not circumferentially rotate, can axially movably be arranged on described impact transference part part, described jackshaft be provided with can with described first, second clutch part on the spline of spline adaptation, on described first, second clutch part, acting on respectively having makes described first, second clutch part to the flexible member of the position bias voltage with described jackshaft splined engagement, the spline position of described jackshaft is provided with can be to the spacing limiting section of described first, second clutch part, described the first clutch part is allocated on the position that makes described rotation transmission part disengaging and described jackshaft unitary rotation by described operating means, described the second clutch part is allocated on the position that makes described impact transference part part disengaging and described jackshaft unitary rotation by described operating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110039841.XA CN102632481B (en) | 2011-02-13 | 2011-02-13 | Electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110039841.XA CN102632481B (en) | 2011-02-13 | 2011-02-13 | Electric hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102632481A CN102632481A (en) | 2012-08-15 |
| CN102632481B true CN102632481B (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110039841.XA Active CN102632481B (en) | 2011-02-13 | 2011-02-13 | Electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102632481B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107984433A (en) * | 2017-12-30 | 2018-05-04 | 江苏东成机电工具有限公司 | Pattern switching mechanism and its electric tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463416B1 (en) * | 1990-06-26 | 1993-09-29 | Robert Bosch Gmbh | Electrical hammerdrill |
| DE4111127C2 (en) * | 1990-04-05 | 1997-05-22 | Makita Corp | Impact tool that can be used without impact |
| CN1775483A (en) * | 2004-11-15 | 2006-05-24 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
| CN201348001Y (en) * | 2008-12-27 | 2009-11-18 | 南京德朔实业有限公司 | Safe engaging and disengaging gear of hand-held electric hammer |
| CN101758486A (en) * | 2010-01-21 | 2010-06-30 | 浙江海王电器有限公司 | Light single-button multifunctional electric hammer |
| CN201970287U (en) * | 2011-02-13 | 2011-09-14 | 南京德朔实业有限公司 | Electric hammer |
-
2011
- 2011-02-13 CN CN201110039841.XA patent/CN102632481B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111127C2 (en) * | 1990-04-05 | 1997-05-22 | Makita Corp | Impact tool that can be used without impact |
| EP0463416B1 (en) * | 1990-06-26 | 1993-09-29 | Robert Bosch Gmbh | Electrical hammerdrill |
| CN1775483A (en) * | 2004-11-15 | 2006-05-24 | 铁鎯电动工具有限公司 | Three-function light electric hammer |
| CN201348001Y (en) * | 2008-12-27 | 2009-11-18 | 南京德朔实业有限公司 | Safe engaging and disengaging gear of hand-held electric hammer |
| CN101758486A (en) * | 2010-01-21 | 2010-06-30 | 浙江海王电器有限公司 | Light single-button multifunctional electric hammer |
| CN201970287U (en) * | 2011-02-13 | 2011-09-14 | 南京德朔实业有限公司 | Electric hammer |
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| Publication number | Publication date |
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| CN102632481A (en) | 2012-08-15 |
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Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: 211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |
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