CN101077576A - Electric hammer and its front cover anti-loosing mechanism - Google Patents
Electric hammer and its front cover anti-loosing mechanism Download PDFInfo
- Publication number
- CN101077576A CN101077576A CN 200710130618 CN200710130618A CN101077576A CN 101077576 A CN101077576 A CN 101077576A CN 200710130618 CN200710130618 CN 200710130618 CN 200710130618 A CN200710130618 A CN 200710130618A CN 101077576 A CN101077576 A CN 101077576A
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- CN
- China
- Prior art keywords
- protecgulum
- electric hammer
- spring washer
- loosing mechanism
- pivoted housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention is one kind of looseness preventing mechanism for the front cover of electric hammer. The front cover is thread connected with one rotating sleeve, and one spring washer is set between the front cover and the rotating sleeve to prevent looseness between the front cover and the rotating sleeve caused by hammering vibration effectively.
Description
Technical field
The present invention is about a kind of electric tool, more particularly, and about the anti-loosing mechanism of a kind of electric hammer and protecgulum thereof.
Technical background
As shown in Figure 1, the protecgulum 1 of existing a kind of electric hammer is directly to be fixedly connected by screw thread and pivoted housing 4, and is undertaken spacing by the drill bit mounting or dismounting assemblies (as: stage clip 5, centring ring 6 etc.) of 3 pairs of electric hammers of gland.The internal thread hole bottom face of this electric hammer protecgulum 1 when assembling and the front end face of pivoted housing 4 are close to and mutual extrusion.This electric hammer in use, under lasting hammering vibration force effect, the thread connection between protecgulum 1 and the pivoted housing 4 can be become flexible, even comes off, cause protecgulum 1, gland 4, stage clip 5 etc. to be subjected to displacement or break away from the electric hammer main body, cause electric hammer to break down and can not use.
Summary of the invention
The object of the present invention is to provide a kind of anti-loosing mechanism of electric hammer protecgulum, utilize this anti-loosing mechanism can effectively prevent electric hammer in use the thread connection between protecgulum and the pivoted housing get loose.
Electric hammer protecgulum anti-loosing mechanism includes protecgulum and pivoted housing among the present invention, described protecgulum and described pivoted housing thread connection, replace the drill bit mounting or dismounting assembly of described electric hammer simultaneously and carry out spacingly, between described protecgulum and described pivoted housing opposing end faces, be provided with a spring washer.
Be provided with a through hole in the middle of the described protecgulum, be provided with the internal thread that is connected with described pivoted housing connection, be formed for step end face in the bottom of described internal thread with described spring washer butt at through-hole wall.
Be processed with groove between described step end face and the internal thread.
Described spring washer is a ring-type.
Described spring washer has a fracture that tilts with normal section.
Described spring washer has a fracture that tilts with normal section, and has axial dislocation along described fracture.
The outstanding section side of described spring washer incision position has wedge angle.
Described spring washer is the annulus of a sealing, has been formed separately at least one shell fragment in the both ends of the surface of annulus.
Electric hammer among the present invention is by being provided with a spring washer between protecgulum and pivoted housing, and can prevent effectively that protecgulum from getting loose, and the increase of spring washer, makes the rational in infrastructure of electric hammer, simple structure, reliability height, maintainable characteristics such as good.
Description of drawings
Fig. 1 is the cross-sectional schematic of existing electric hammer protecgulum when being connected with pivoted housing;
Fig. 2 is the cross-sectional schematic when the electric hammer protecgulum is connected with pivoted housing among the present invention;
Fig. 3 is the three-dimensional exploded view of structure shown in Fig. 2;
Fig. 4 is the schematic perspective view of protecgulum among the present invention;
Fig. 5 is the schematic perspective view of medi-spring packing ring of the present invention;
Fig. 6 is the schematic perspective view of pivoted housing and protecgulum link among the present invention;
Fig. 7 is the schematic perspective view of another embodiment of medi-spring packing ring of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described in further detail.
Because the electric hammer agent structure is a known configurations, and connecting between the improvement of the present invention protecgulum that only is electric hammer and the pivoted housing, therefore to the concrete structure and the operation principle explanation no longer separately of electric hammer main body.But it is all structures of thread connection that the electric hammer that relates among the present invention is contained connecting between protecgulum and the pivoted housing.
As Fig. 2 to Fig. 4, shown in Figure 6, the protecgulum 1 of electric hammer has a through hole 11 that supplies pivoted housing 4 to penetrate among the present invention, on the inwall of this through hole 11, be provided with an internal thread 10, be provided with a step 12 simultaneously in the bottom of internal thread 10, and between step 12 and screw thread 10, can also be provided with a groove 13, be convenient to the placement of spring washer 2.The outer surface of pivoted housing 4 front ends be provided with can with the external screw thread 41 of protecgulum internal thread 10 engagement.
Between the end face 40 of the step 12 of protecgulum 1 and pivoted housing 4, insert a spring washer 2, prevent unclamping between protecgulum 1 and the pivoted housing when electric hammer can utilize spring washer 2 in use.Protecgulum 1 utilizes the body in through hole 11 outsides and gland 3 to connect simultaneously, (centring ring and gland can be overall structures) on the electric hammer main body located, is fixed on to the drill bit mounting or dismounting assemblies (comprising centring ring 6 and stage clip 5 etc.) of electric hammer, because protecgulum 1 is prior art with the structure and the connecting relation of gland 3, centring ring 6 and stage clip 5, therefore explanation no longer separately.
As shown in Figure 5, spring washer 2 is a ring-type, be directly arranged in the end of pivoted housing 4, and has a fracture 20 that tilts with normal section, the two sections that is fracture 20 places is the inclined-plane, spring washer 2 is at both wings 21, the 22 axial dislocation certain distances at fracture 20 places simultaneously, and two sections all forms wedge angle at the angle away from spring washer 2 ring walls, is used for replacing respectively the step 12 of protecgulum 1 and the end face 40 of pivoted housing 4.
As shown in Figure 7, the spring washer 2 among the present invention also can be the circular of a sealing, the integrally formed shell fragment 23 of replacing protecgulum step 12 and pivoted housing 4 end faces 40 that is useful on both ends of the surface.This spring washer also can realize preventing the purpose that gets loose.
Claims (9)
1. electric hammer protecgulum anti-loosing mechanism, include protecgulum and pivoted housing, described protecgulum and described pivoted housing thread connection are replaced the drill bit mounting or dismounting assembly of described electric hammer simultaneously and are carried out spacingly, it is characterized in that: be provided with a spring washer between described protecgulum and described pivoted housing opposing end faces.
2. electric hammer protecgulum anti-loosing mechanism according to claim 1, it is characterized in that: be provided with a through hole in the middle of the described protecgulum, be provided with the internal thread that connects with described pivoted housing at through-hole wall, be formed for step end face in the bottom of described internal thread with described spring washer butt.
3. electric hammer protecgulum anti-loosing mechanism according to claim 2 is characterized in that: be processed with groove between described step end face and the internal thread.
4. according to any described electric hammer protecgulum anti-loosing mechanism in the claim 1 to 3, it is characterized in that: described spring washer is a ring-type.
5. electric hammer protecgulum anti-loosing mechanism according to claim 4 is characterized in that: described spring washer has a fracture that tilts with normal section.
6. electric hammer protecgulum anti-loosing mechanism according to claim 4 is characterized in that: described spring washer has a fracture that tilts with normal section, and has axial dislocation along described fracture.
7. electric hammer protecgulum anti-loosing mechanism according to claim 6 is characterized in that: the outstanding section side of described spring washer incision position has wedge angle.
8. according to any described electric hammer protecgulum anti-loosing mechanism in the claim 1 to 3, it is characterized in that: described spring washer is the annulus of a sealing, has been formed separately at least one shell fragment in the both ends of the surface of annulus.
9. an electric hammer is characterized in that: include the described protecgulum anti-loosing mechanism of aforesaid right requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710130618XA CN100515688C (en) | 2007-07-11 | 2007-07-11 | Electric hammer and its front cover anti-loosing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710130618XA CN100515688C (en) | 2007-07-11 | 2007-07-11 | Electric hammer and its front cover anti-loosing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101077576A true CN101077576A (en) | 2007-11-28 |
| CN100515688C CN100515688C (en) | 2009-07-22 |
Family
ID=38905326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710130618XA Expired - Fee Related CN100515688C (en) | 2007-07-11 | 2007-07-11 | Electric hammer and its front cover anti-loosing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100515688C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722534A (en) * | 2012-10-12 | 2014-04-16 | 江苏铁锚工具有限公司 | Electric hammer front cover fixing device |
| CN116352657A (en) * | 2023-04-18 | 2023-06-30 | 浙江德硕科技股份有限公司 | Lithium electric hammer with automatic lubrication system |
-
2007
- 2007-07-11 CN CNB200710130618XA patent/CN100515688C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722534A (en) * | 2012-10-12 | 2014-04-16 | 江苏铁锚工具有限公司 | Electric hammer front cover fixing device |
| CN103722534B (en) * | 2012-10-12 | 2016-04-13 | 江苏铁锚工具有限公司 | A kind of Electric hammer front cover fixture |
| CN116352657A (en) * | 2023-04-18 | 2023-06-30 | 浙江德硕科技股份有限公司 | Lithium electric hammer with automatic lubrication system |
| CN116352657B (en) * | 2023-04-18 | 2023-09-05 | 浙江德硕科技股份有限公司 | Lithium electric hammer with automatic lubrication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100515688C (en) | 2009-07-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20120711 |