CN201124244Y - Clamping mechanism for head of pneumatic screwdriver - Google Patents
Clamping mechanism for head of pneumatic screwdriver Download PDFInfo
- Publication number
- CN201124244Y CN201124244Y CNU2007201554414U CN200720155441U CN201124244Y CN 201124244 Y CN201124244 Y CN 201124244Y CN U2007201554414 U CNU2007201554414 U CN U2007201554414U CN 200720155441 U CN200720155441 U CN 200720155441U CN 201124244 Y CN201124244 Y CN 201124244Y
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- Prior art keywords
- screwdriver bit
- screwdriver
- bit
- model
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to a bit clamping mechanism of a pneumatic screwdriver, wherein steel balls are compressed by an elastic sleeve through an elastic force to clamp the screwdriver bit on a spindle of the pneumatic screwdriver; a small hole at the front end of the elastic sleeve directly contacts the outer surface of the bit. By the improvement on conventional steel telescopic chuck of the pneumatic screwdriver, the bit clamping mechanism of the utility model has the advantages of simple structure, low production cost, convenient assembly and maintenance, small jumping of the bit, high reliability, long service life, etc.
Description
[technical field]
The utility model relates to a kind of pneumatic screw knife structure, particularly relates to a kind of screwdriver bit clamping device of pneumatic screw driver.
[background technology]
Pneumatic screw driver is usually used in the various screws of turn-knob, screw etc., and its screwdriver bit also is varied, during work, often need repeatedly change screwdriver bit, and frequent replacing brings a lot of inconvenience to work.Traditional, pneumatic screwdriver screwdriver bit clamping device as shown in Figure 1, it is by jump ring 15,17, pad 16,18, steel telescopic 12, spring 13, steel ball 14 is formed.When changing screwdriver bit 11, steel telescopic 12 is pressed down, steel ball 14 is in free state, and screwdriver bit 11 can be extracted or insert.In use, steel telescopic 12 automatically resets under the effect of spring 13, and steel ball 14 is compressed into the groove of screwdriver bit 11, realizes the clamping to screwdriver bit 11.Because this kind constitutional detail quantity is many, difficulty of processing is big, needs specific purpose tool when assembling and maintenance, so the production cost height, and maintenance difficulty is big.Have only steel ball to directly act on screwdriver bit owing to this structure again, screwdriver bit poor stability when therefore working.Also because this structure is a rigidity to the clamping of screwdriver bit, so the vibration that screwdriver bit produces can't cushion work the time, parts depreciation is fast, and service life is low.
[utility model content]
Technical problem to be solved in the utility model is to reduce the production and the assembly cost of pneumatic screw driver screwdriver bit clamping device, is easy to install and maintain, and improves serviceability, improves service life.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: utilize the caoutchouc elasticity chuck to substitute the flexible shell type chuck of conventional steel, a kind of screwdriver bit clamping device of pneumatic screw driver is provided, utilizes elastic jacket to compress steel ball the screwdriver head-clamp is held on the pneumatic screw driver main shaft by elastic force.
Particularly, described elastic jacket front end aperture directly contacts with the screwdriver bit outer surface.
More specifically, the material of described elastic jacket is an anti-aging rubber.
More specifically, described elastic jacket is cylindric.
Compared with prior art, the utlity model has following beneficial effect: its clamping device design is easy, and processing had both reduced production cost easily, improved serviceability again, improved service life, replacing and easy to maintenance.
[description of drawings]
With reference to respective drawings, will become more clear in conjunction with preferred implementation other purposes of the present utility model, details, feature and advantage, described embodiment only is exemplary introduction and unconfined intention, wherein:
Fig. 1 is the cutaway view of traditional, pneumatic screwdriver clamping device;
Fig. 2 is the longitudinal sectional view of the utility model pneumatic screw driver screwdriver bit clamping device.
[specific embodiment]
With reference to Fig. 2, according to a preferred embodiment of the present utility model, wherein utilize elastic jacket 22, compress steel ball 23 by elastic force screw screwdriver bit 21 is clamped on the pneumatic screw driver main shaft 24.
Described elastic jacket front end aperture A directly contacts with screwdriver bit 21 outer surfaces.
Use the clamping device of pneumatic screw driver of the present utility model, when changing screwdriver bit 21, only external force can extract screwdriver bit or insert a little, and the groove of screwdriver bit 21 is compressed into or jumped out to steel ball 23.When maintenance, only need be pulled up elastic jacket 22 from main shaft 24, put behind the renewal part to get final product, need not any specific purpose tool.In normal use, because elastic jacket 22 utilizes elastic force to finish clamping to screwdriver bit 21 by steel ball 23 and self aperture A, screwdriver bit is beated for a short time in therefore using, and part is not easy to wear.
In the foregoing description, described elastic jacket 22 is generally made by materials such as anti-aging rubbers, is designed to cylindricly, also can be designed to required Any shape as required.The utility model is widely used in the clamping of all kinds of pneumatic screw driver screwdriver bits.
Though in conjunction with specific embodiments the utility model has been done detailed description; but it is evident that; this does not constitute any limitation this; those of ordinary skill in the art can replace all technical equivalents things and their combinations according to the knowledge of being grasped, and all will fall into the utility model protection domain.
Claims (3)
1. the screwdriver bit clamping device of a pneumatic screw driver, it is characterized in that: utilize elastic jacket, compress steel ball by elastic force the screwdriver head-clamp is held on the pneumatic screw driver main shaft, described elastic jacket front end aperture directly contacts with the screwdriver bit outer surface.
2. screwdriver bit clamping device according to claim 1 is characterized in that: the material of described elastic jacket is an anti-aging rubber.
3. screwdriver bit clamping device according to claim 1 and 2 is characterized in that: described elastic jacket is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201554414U CN201124244Y (en) | 2007-07-27 | 2007-07-27 | Clamping mechanism for head of pneumatic screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201554414U CN201124244Y (en) | 2007-07-27 | 2007-07-27 | Clamping mechanism for head of pneumatic screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201124244Y true CN201124244Y (en) | 2008-10-01 |
Family
ID=39997660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201554414U Expired - Fee Related CN201124244Y (en) | 2007-07-27 | 2007-07-27 | Clamping mechanism for head of pneumatic screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201124244Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942769A (en) * | 2015-06-08 | 2015-09-30 | 上海交通大学 | Flexible clamping mechanism |
| CN106655618A (en) * | 2017-02-06 | 2017-05-10 | 苏州全丰精密机械有限公司 | Magnetic coupling electric screwdriver load testing device |
-
2007
- 2007-07-27 CN CNU2007201554414U patent/CN201124244Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942769A (en) * | 2015-06-08 | 2015-09-30 | 上海交通大学 | Flexible clamping mechanism |
| CN104942769B (en) * | 2015-06-08 | 2016-12-07 | 上海交通大学 | A kind of flexible clamping mechanism |
| CN106655618A (en) * | 2017-02-06 | 2017-05-10 | 苏州全丰精密机械有限公司 | Magnetic coupling electric screwdriver load testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20081001 Termination date: 20110727 |