CN208734756U - A kind of clutch structure of electric hammer - Google Patents
A kind of clutch structure of electric hammer Download PDFInfo
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- CN208734756U CN208734756U CN201821358661.1U CN201821358661U CN208734756U CN 208734756 U CN208734756 U CN 208734756U CN 201821358661 U CN201821358661 U CN 201821358661U CN 208734756 U CN208734756 U CN 208734756U
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- clutch
- electric hammer
- clutch gear
- gear
- feather key
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Abstract
The utility model relates to a kind of clutch structures of electric hammer, including crankshaft, clutch gear, clutch, feather key and support pad, keyway is provided on crankshaft, feather key is fixedly mounted in keyway, clutch gear is sleeved on crankshaft, the shaft shoulder of one end of clutch gear and crankshaft against, support pad is mounted between the other end of clutch gear and feather key, the two sides of support pad recline with clutch gear and feather key respectively, clutch sleeve is on feather key and can slide along feather key, engaging structure is equipped between clutch and clutch gear, clutch is connect when sliding to clutch gear with clutch gear, clutch separates when sliding to the other side with clutch gear.The clutch structure of such electric hammer, while realizing chisel function clutch, structure is more compact, reduces the overall volume of electric hammer, improves the stress condition of motor tooth shaft.
Description
Technical field
The utility model relates to electric hammer technical field, the clutch structure of specifically a kind of electric hammer.
Background technique
Electric hammer is a kind of common electric tool, and with the development of Power Tools Industries, the requirement to its function is higher and higher.
Electric hammer principle is transmission mechanism while driving drill bit to make rotating motion, and there are one directions perpendicular to rotary head
Reciprocating hammer movement.Electric hammer is the air pressure in cylinder by transmission mechanism band piston reciprocating air in a cylinder
Mechanical periodicity drives the hammer in cylinder back and forth to hit the top of brick, seems that we tap brick, therefore named electric hammer with hammer.Electricity
Hammer is due to having the function of that single hammer, single brill, hammer drill, angle of broad chiselling adjust four kinds and like by users.
The clutch structure of electric hammer chisel gears all at present, all using clutch in upper, layout of the gear under.However,
When the bearing of bevel pinion component lower end uses needle bearing, the meshing point of roller gear will be made to move up, if chisel shelves
The clutch structure of position still uses layout type of traditional clutch in gear under, will make under point of mesh
It moves, motor tooth shaft is caused to lengthen, in turn result in the increasing of electric hammer volume, while the point of mesh of motor tooth shaft two sides can not be same
On one horizontal plane, stress condition is poor.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of clutch structures of electric hammer, realize the same of chisel function clutch
When, structure is more compact, reduces the overall volume of electric hammer, improves the stress condition of motor tooth shaft.
In order to solve the above-mentioned technical problem, the technical scheme that the utility model is provided is as follows:
A kind of clutch structure of electric hammer, including crankshaft, clutch gear, clutch, feather key and support pad, on crankshaft
It is provided with keyway, feather key is fixedly mounted in keyway, and clutch gear is sleeved on crankshaft, one end of clutch gear and the axis of crankshaft
Shoulder against, support pad is mounted between the other end of clutch gear and feather key, the two sides of support pad respectively with clutch tooth
Wheel and feather key recline, and clutch sleeve is on feather key and can slide along feather key, set between clutch and clutch gear
There is engaging structure, clutch is connect when sliding to clutch gear with clutch gear, is divided when clutch slides to the other side with clutch gear
From.
Realize that clutch gear in clutch structure upper and that clutch is under, will most importantly solve the axis of clutch gear
To orientation problem.In general, the axially position of part is realized using opening circlip.Since clutch gear is constantly in high speed rotation
State, if positioned using opening circlip, opening circlip is the discontinuous ring with opening, high-speed rotating clutch
Gear will be generated abnormal motion or even opening edge edge in the opening of opening circlip due to discontinuity and can be produced to clutch gear
Life is collided with and is worn, and electric hammer may generate abnormal sound in use, and clutch gear is also easy to happen damage.And if from
It closes and installs a gasket additional again between gear and opening circlip, and will affect the engagement of clutch gear and clutch.Therefore using general
Opening up mouthful circlip cannot achieve the stable axially position of clutch gear.
In the utility model, the axially position of support pad is completed by feather key, it is not necessary to which setting opening, support pad is again
It is complete and continuous to positioning for clutch gear, while feather key play the guiding role to clutch, the setting of feather key is simultaneously
Dexterously solve the problems, such as the positioning of clutch gear and the guiding of clutch, gear is obtained in layout type of the upper clutch under
To realize.
Further, one end that feather key and support pad recline is plane.The end of feather key is that plane to support
Reclining for gasket and feather key is more steady, so as to keep the rotation of clutch gear more steady.
Further, support pad is equipped with inlay card protrusion in a ring, in the inner hole of support pad, and inlay card protrusion is installed on key
In slot.The setting of inlay card protrusion avoids support pad that clutch gear is followed to rotate together, and equally can make the rotation of clutch gear more
Add steady.
Further, engaging structure includes that engaging detent and engagement protrusion, engaging detent setting are close in clutch gear
On the end face of clutch, clutch is arranged on the end face of clutch gear in engagement protrusion.
Further, the clutch structure of electric hammer further includes elastic element and against circlip, and elastic element is sleeved on crankshaft
On, be installed on crankshaft against circlip, the both ends of elastic element respectively with clutch and against circlip against.Elastic element with
And clutch self-return can be made against circlip, simplify the structure of clutch for clutch control.
Further, elastic element is volute spring.Volute spring interior in a limited space can provide foot for clutch
Enough restoring forces.
Further, it is equipped with against circlip and weakens through slot.Since one end of volute spring abuts against on circlip, support
The power suffered by the circlip is larger, it is therefore desirable to increase the thickness against circlip to increase intensity, and thickness increase after against card
Spring non-deformability is strong, it is difficult to be installed on crankshaft, the setting for weakening through slot can solve this problem.
Further, the clutch structure of electric hammer further includes middle cover, and crankshaft may be rotatably mounted in middle cover.
Further, the clutch structure of electric hammer further includes clutch pulling shelf, and one end and the middle cover of clutch yoke are slidably connected,
The other end of clutch yoke is abutted against with clutch to be contacted.It may be implemented to stir clutch using such structure, thus real
Existing clutch function.
Further, clutch pulling shelf includes shift fork and guide post, and middle cover is equipped with pilot hole, one end of guide post with
Shift fork is fixedly connected, and the other end of guide post is mounted in pilot hole and can slide along pilot hole, and the clutch is equipped with top
By flange, shift fork and abutting flanges are abutted against.
In conclusion the clutch structure of such electric hammer, while realizing chisel function clutch, structure is more compact, reduces
The overall volume of electric hammer improves the stress condition of motor tooth shaft.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the clutch structure of existing electric hammer in electric hammer；
Fig. 2 is the structural schematic diagram in the clutch structure electric hammer of the present embodiment electric hammer；
Fig. 3 be the clutch structure of the present embodiment electric hammer without middle cover and clutch pulling shelf when configuration schematic diagram；
Fig. 4 is the structural schematic diagram of clutch gear in the clutch structure of the present embodiment electric hammer；
Fig. 5 is the structural schematic diagram in the clutch structure of the present embodiment electric hammer against circlip；
Wherein, crankshaft -1, keyway -11, clutch gear -2, engaging detent -21, clutch -3, engagement protrusion -31, guiding
Key -4, support pad -5, inlay card protrusion -51, elastic element -6 weaken through slot -71, middle cover -8 against circlip -7, and clutch is dialled
Frame -9, shift fork -91, guide post -92.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The clutch structure of existing electric hammer as shown in Figure 1 all uses clutch 3 in upper, layout of the clutch gear 2 under.And
As shown in Fig. 2, when the bearing of bevel pinion component lower end uses needle bearing, in meshing point that clutch gear 2 will be made
It moves, it, will if the clutch structure of chisel gear still uses layout type of traditional clutch 3 in upper clutch gear 2 under
So that point of mesh moves down, motor tooth shaft 0 is caused to lengthen, in turn results in the increasing of electric hammer volume, while 0 two sides of motor tooth shaft
Point of mesh can not be in same level, stress condition is poor.
Therefore, the clutch structure of a kind of electric hammer as shown in Figures 2 and 3, including crankshaft 1, clutch gear 2, clutch 3,
Feather key 4 and support pad 5.Keyway 11 is provided on crankshaft 1, feather key 4 is fixedly mounted in keyway 11, and 2 sets of clutch gear
On crankshaft 1, one end of clutch gear 2 and the shaft shoulder of crankshaft 1 are against support pad 5 is mounted on the other end of clutch gear 2
Between feather key 4, the two sides of support pad 5 recline with clutch gear 2 and feather key 4 respectively.
In the present embodiment, feather key 4 is plane with one end that support pad 5 reclines.The end of feather key 4 makes for plane
Support pad 5 and reclining for feather key 4 are more steady, so as to keep the rotation of clutch gear 2 more steady.
Meanwhile support pad 5 is in a ring, and inlay card protrusion 51 is equipped in the inner hole of support pad 5, inlay card protrusion 51 is installed on
In keyway 11.The setting of inlay card protrusion 51 avoids support pad 5 that clutch gear 2 is followed to rotate together, and can equally make clutch gear 2
Rotation it is more steady.
Clutch 3 is sleeved on feather key 4 and can slide along feather key 4, is equipped with and nibbles between clutch 3 and clutch gear 2
Structure is closed, is connect when clutch 3 slides to clutch gear 2 with clutch gear 2, when clutch 3 slides to the other side and clutch gear 2
Separation.
Specifically, engaging structure includes engaging detent 21 and engagement protrusion 31, engaging detent 21 is arranged in clutch gear 2
On the end face of clutch 3, clutch 3 is arranged on the end face of clutch gear 2 in engagement protrusion 31, such as Fig. 3 and Fig. 4
It is shown.
Realize that clutch gear 2 in clutch structure upper and that clutch 3 is under, will most importantly solve clutch gear 2
Axially position problem.In general, the axially position of part is realized using opening circlip.Since clutch gear 2 is constantly in height
The state of speed rotation, if positioned using opening circlip, opening circlip is the discontinuous ring with opening, high speed rotation
Clutch gear 2 opening circlip opening will be generated due to discontinuity abnormal motion in addition opening edge edge can to from
It closes the generation of gear 2 to collide with and wear, electric hammer may generate abnormal sound in use, and clutch gear 2 is also easy to happen damage.
And if install a gasket additional again between clutch gear 2 and opening circlip, and will affect nibbling for clutch gear 2 and clutch 3
It closes.Therefore the stable axially position of clutch gear 2 cannot achieve using common opening circlip.
In the utility model, the axially position of support pad 5 is completed by feather key 4, it is not necessary to setting opening, support pad
5 positioning to clutch gear 2 again, it is complete and continuous, while feather key 4 play the guiding role to clutch 3, feather key 4
It is arranged while dexterously solves the problems, such as the guiding of the positioning of clutch gear 2 and clutch 3, clutch gear 2 is in upper clutch
3 layout type under is achieved.
In addition, the clutch structure of electric hammer further includes elastic element 6 and against circlip 7, elastic element 6 is sleeved on crankshaft 1
On, be installed on crankshaft 1 against circlip 7, the both ends of elastic element 6 respectively with clutch 3 and against circlip 7 against.Elasticity
Element 6 and 3 self-return of clutch can be made against circlip 7, simplify the structure of clutch for clutch control.In the present embodiment, elasticity member
Part 6 is volute spring.Volute spring interior in a limited space can provide enough restoring forces for clutch 3.
Weaken through slot 71 preferably, being equipped with against circlip 7, as shown in Figure 5.Since one end of volute spring is resisted against
On circlip 7, the power suffered by the circlip 7 is larger, it is therefore desirable to increase the thickness against circlip 7 to increase intensity, and it is thick
Degree is strong against 7 non-deformability of circlip after increasing, it is difficult to be installed on crankshaft 1, the setting for weakening through slot 71 can solve this
One problem.
As also shown in fig. 2, the clutch structure of electric hammer further includes middle cover 8 and clutch pulling shelf 9, and crankshaft 1 is rotatably mounted
In middle cover 8.One end of clutch yoke 9 is slidably connected with middle cover 8, and the other end and the clutch 3 of clutch yoke 9 abut against
Contact.In the present embodiment, clutch pulling shelf 9 includes shift fork 91 and guide post 92, and middle cover 8 is equipped with pilot hole, guide post 92
One end be fixedly connected with shift fork 91, the other end of guide post 92 is mounted in pilot hole and can slide along pilot hole, it is described from
Clutch 3 is equipped with and abuts against flange 32, and shift fork 91 is abutted against with flange 32 is abutted against.It may be implemented using such structure to clutch 3
Stir, to realize clutch function.
In conclusion the clutch structure of such electric hammer, while realizing chisel function clutch, structure is more compact, reduces
The overall volume of electric hammer improves the stress condition of motor tooth shaft.
In short, the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
Any modifications, equivalent replacements, and improvements made within spirit of the present utility model and principle etc. should be included in practical
Within novel protection scope.
Claims (10)
1. a kind of clutch structure of electric hammer, it is characterised in that: including crankshaft, clutch gear, clutch, feather key and supporting pad
Piece is provided with keyway on the crankshaft, and the feather key is fixedly mounted in keyway, and the clutch gear is sleeved on crankshaft, institute
State clutch gear one end and crankshaft the shaft shoulder against, the support pad be mounted on clutch gear the other end and feather key it
Between, the two sides of the support pad recline with clutch gear and feather key respectively, and the clutch sleeve is mounted on feather key simultaneously
It can be slided along feather key, engaging structure is equipped between the clutch and clutch gear, when the clutch slides to clutch gear
It is connect with clutch gear, the clutch separates when sliding to the other side with clutch gear.
2. the clutch structure of electric hammer described in accordance with the claim 1, it is characterised in that: what the feather key reclined with support pad
One end is plane.
3. the clutch structure of electric hammer described in accordance with the claim 1, it is characterised in that: the support pad in a ring, the branch
Inlay card protrusion is equipped in the inner hole of stake pad piece, the inlay card protrusion is installed in keyway.
4. the clutch structure of electric hammer described in accordance with the claim 1, it is characterised in that: the engaging structure include engaging detent with
And engagement protrusion, clutch gear is arranged on the end face of clutch in the engaging detent, the engagement protrusion be arranged from
Clutch is on the end face of clutch gear.
5. according to the clutch structure of electric hammer described in claim 1-4 any one, it is characterised in that: further include elastic element with
And against circlip, the elastic element is sleeved on crankshaft, and it is described to be installed on crankshaft against circlip, the two of the elastic element
End respectively with clutch and against circlip against.
6. the clutch structure of electric hammer according to claim 5, it is characterised in that: the elastic element is volute spring.
7. the clutch structure of electric hammer according to claim 5, it is characterised in that: described logical equipped with weakening against circlip
Slot.
8. the clutch structure of electric hammer described in accordance with the claim 1, it is characterised in that: further include middle cover, the crankshaft can turn
It is dynamic to be mounted in middle cover.
9. the clutch structure of electric hammer according to claim 8, it is characterised in that: further include clutch pulling shelf, the clutch is dialled
One end of fork is slidably connected with middle cover, and the other end of the clutch yoke is abutted against with clutch to be contacted.
10. the clutch structure of electric hammer according to claim 9, it is characterised in that: the clutch pulling shelf include shift fork and
Guide post, the middle cover are equipped with pilot hole, and one end of the guide post is fixedly connected with shift fork, the guide post it is another
End is mounted in pilot hole and can slide along pilot hole, the clutch equipped with abutting against flange, the shift fork with abut against flange
It abuts against.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821358661.1U CN208734756U (en) | 2018-08-22 | 2018-08-22 | A kind of clutch structure of electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821358661.1U CN208734756U (en) | 2018-08-22 | 2018-08-22 | A kind of clutch structure of electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208734756U true CN208734756U (en) | 2019-04-12 |
Family
ID=66030764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821358661.1U Active CN208734756U (en) | 2018-08-22 | 2018-08-22 | A kind of clutch structure of electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208734756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869563A (en) * | 2018-08-22 | 2018-11-23 | 武义华丽电器制造有限公司 | A kind of clutch structure of electric hammer |
-
2018
- 2018-08-22 CN CN201821358661.1U patent/CN208734756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869563A (en) * | 2018-08-22 | 2018-11-23 | 武义华丽电器制造有限公司 | A kind of clutch structure of electric hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321201 Wangyuan Industrial Zone, Quanxi Town, Wuyi County, Jinhua City, Zhejiang Province Patentee after: Gorgeous Electrical Appliance Manufacturing Co., Ltd. Address before: 321201 Wangyuan Industrial Zone, Quanxi Town, Wuyi County, Jinhua City, Zhejiang Province Patentee before: WUYI HUALI ELECTRIC APPLIANCES MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |