CN202862155U - Electric hammer front cover fixing device and electric hammer comprising the same - Google Patents
Electric hammer front cover fixing device and electric hammer comprising the same Download PDFInfo
- Publication number
- CN202862155U CN202862155U CN 201220522104 CN201220522104U CN202862155U CN 202862155 U CN202862155 U CN 202862155U CN 201220522104 CN201220522104 CN 201220522104 CN 201220522104 U CN201220522104 U CN 201220522104U CN 202862155 U CN202862155 U CN 202862155U
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- CN
- China
- Prior art keywords
- electric hammer
- protecgulum
- front cover
- fixing device
- ring
- 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.)
- Withdrawn - After Issue
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Abstract
An electric hammer front cover fixing device and an electric hammer comprising the electric hammer front cover fixing device comprise a front cover which is provided with a through hole and a drill clamping device which is arranged in the through hole in a sleeved mode, wherein key grooves which are corresponding in position are arranged in the outer circle of the drill clamping device and the inner circle of the front cover along the axial direction. The disclosed electric hammer front cover fixing device is fixedly connected with the front cover through key pins and is limited through an external check ring, so the problem that a plastic article is abraded when the front cover can not rotate quickly enough is solved. The utility model further discloses the electric hammer, and the electric hammer is characterized by comprising any electric hammer front cover fixing device in claim of right one to claim of right four.
Description
Technical field
The utility model relates to a kind of mechanical clamping structure, is specifically related to a kind of protecgulum fixture for electric hammer.
Background technology
Traditional electric hammer protecgulum fixture, the fixing of protecgulum all adopts screw thread fastening type or simple back-up ring to fix, such fixed form easily causes protecgulum to get loose when electric hammer uses or weares and teares plastic items, thereby affect the service life of electric hammer, therefore, a kind of new electric hammer protecgulum fixture is demanded urgently occurring.
The utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of electric hammer protecgulum fixture, not transfer in the time of can solving the protecgulum running, the problem of wearing and tearing working of plastics.
For achieving the above object, the technical solution of the utility model is as follows: a kind of electric hammer protecgulum fixture, comprise the protecgulum that is provided with through hole and be sheathed on the interior drill holder of described through hole, described drill holder outer ring is provided with the corresponding keyway in position vertically with described protecgulum inner ring.
Preferably, described drill holder tail end also is provided with an annular slot.
Preferably, be provided with jump ring or back-up ring in the described draw-in groove.
Preferably, the diameter in described jump ring or the back-up ring outside is greater than the aperture of described protecgulum.
A kind of electric hammer comprises described electric hammer protecgulum fixture.
Adopt the beneficial effect of above technical scheme to be: to change the mode that the traditional screw thread of protecgulum is fixed or back-up ring is fixing, adopt key pin connected mode and protecgulum to fix, use again outside retainer ring spacing, not transfer when efficiently solving the protecgulum running, the problem of wearing and tearing working of plastics.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment technology, the below will do to introduce simply to the accompanying drawing of required use in the embodiment technical description, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of electric hammer protecgulum of the utility model fixture;
The represented corresponding component title of numeral among the figure:
1, electric hammer shell 2, protecgulum 3, drill holder 4, back-up ring 5, key.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of electric hammer protecgulum fixture, comprises the protecgulum that is provided with through hole and is sheathed on the interior drill holder of described through hole, and described drill holder outer ring is provided with the corresponding keyway in position vertically with described protecgulum inner ring.
As shown in Figure 1, electric hammer protecgulum fixture comprises drill holder 3 and protecgulum 2, and protecgulum 2 is provided with through hole, and drill holder 3 is sheathed in the through hole of protecgulum 2.Drill holder 3 outer rings are provided with the corresponding keyway in position vertically with described protecgulum 2 inner rings, and drill holder is connected with key 5 with protecgulum.The drill holder tail end also is provided with an annular slot, is provided with back-up ring 4 in the draw-in groove, and the diameter in back-up ring 4 outsides is greater than the aperture of described protecgulum.In the electric hammer use procedure, protecgulum is owing to cooperating with the drill holder key, and protecgulum can rotate together along with drill holder; Because the drill holder tail end is provided with external diameter greater than jump ring or the back-up ring in protecgulum aperture, protecgulum can not split away off, and the working of plastics on the protecgulum can not produce wearing and tearing yet, thereby has prolonged the service life of electric hammer.
In the above-described embodiments, jump ring can also be set in the annular slot of drill holder tail end substitute back-up ring, the external diameter of same jump ring is greater than the aperture of protecgulum.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. an electric hammer protecgulum fixture is characterized in that, comprises the protecgulum that is provided with through hole and is sheathed on the interior drill holder of described through hole, and described drill holder outer ring is provided with the corresponding keyway in position vertically with described protecgulum inner ring.
2. electric hammer protecgulum fixture according to claim 1 is characterized in that, described drill holder tail end also is provided with an annular slot.
3. electric hammer protecgulum fixture according to claim 2 is characterized in that, is provided with jump ring or back-up ring in the described draw-in groove.
4. electric hammer protecgulum fixture according to claim 3 is characterized in that, the diameter in described jump ring or the shaft block ring outside is greater than the aperture of described protecgulum.
5. an electric hammer is characterized in that, comprises the arbitrary described electric hammer protecgulum fixture of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220522104 CN202862155U (en) | 2012-10-12 | 2012-10-12 | Electric hammer front cover fixing device and electric hammer comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220522104 CN202862155U (en) | 2012-10-12 | 2012-10-12 | Electric hammer front cover fixing device and electric hammer comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202862155U true CN202862155U (en) | 2013-04-10 |
Family
ID=48028910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220522104 Withdrawn - After Issue CN202862155U (en) | 2012-10-12 | 2012-10-12 | Electric hammer front cover fixing device and electric hammer comprising the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202862155U (en) |
Cited By (1)
| 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 |
-
2012
- 2012-10-12 CN CN 201220522104 patent/CN202862155U/en not_active Withdrawn - After Issue
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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |