CN2917963Y - Force-limited safety labor-saving spanner - Google Patents
Force-limited safety labor-saving spanner Download PDFInfo
- Publication number
- CN2917963Y CN2917963Y CN 200620024309 CN200620024309U CN2917963Y CN 2917963 Y CN2917963 Y CN 2917963Y CN 200620024309 CN200620024309 CN 200620024309 CN 200620024309 U CN200620024309 U CN 200620024309U CN 2917963 Y CN2917963 Y CN 2917963Y
- Authority
- CN
- China
- Prior art keywords
- clutch
- tablet
- plate
- force
- rotating shaft
- 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.)
- Expired - Fee Related
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- Mechanical Operated Clutches (AREA)
Abstract
The utility model discloses a force limited, safe and laborsaving wrench, which comprises a rotating shaft (1), a transmission gear sleeve (2), an upper clutch tablet (3) and a lower clutch tablet (4); the upper clutch tablet (3) and the lower clutch tablet (4) are respectively provided with a process (5) and a groove (6) meshed together with gradient; a spring (7) is arranged between the lower clutch tablet (4) and the transmission gear sleeve (2). When the upper clutch tablet is rotated the lower clutch tablet turns synchronously. The upper clutch tablet creates a downward press to the lower clutch tablet. When the rotation force reaches a certain extent, the lower clutch tablet will move downwards conquering the elastic force of the spring, until the lower clutch tablet detaches the upper clutch tablet, and then the upper clutch tablet is idle running achieving the effect of force limited. The using is safe, convenient and laborsaving.
Description
Affiliated technical field
The utility model belongs to a kind of hardware ﹠ tools, is a kind of spanner of dismounting lug nut particularly.
Background technology
In the prior art, during auto repair, the spanner of dismounting automotive tyre nut has labour-saving spanner, and its top is rotating shaft, and the bottom is the change-speed gearing sleeve.Outside nut, rotating shaft is realized the labour-saving purpose by change-speed gearing with jacket casing.But the deficiency of its existence is: firmly excessive during clamp nut, cause the damage of spanner easily, and influence service life.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of prior art, and a kind of improved spanner is provided, and it is not only laborsaving, also has limit power function, ensures the safety that spanner uses.
For reaching above-mentioned purpose, the utility model is taked following technical scheme: the utility model includes: rotating shaft, change-speed gearing sleeve, it is characterized in that: the top movable of rotating shaft is touched and is associated with clutch-plate, the corresponding clutch-plate down that is provided with below last clutch-plate, following clutch-plate and rotating shaft are that key is slidingly connected, the lower surface of last clutch-plate and the upper surface of following clutch-plate have the projection and the groove of corresponding engagement, and projection and groove have the gradient; Be provided with spring between clutch-plate and the change-speed gearing sleeve below it down.
The utility model is taked technique scheme, has following beneficial effect: when the utility model uses, with the change-speed gearing jacket casing on nut, clutch-plate in the rotation, following clutch-plate is under the effect of spring, and with last clutch-plate engagement, clutch-plate together rotated under last clutch-plate drove.Because the projection and the groove of corresponding engagement have the gradient, in the two rotary course, last clutch-plate produces downward pressure to following clutch-plate.Revolving force is big more, and downforce is also just big more.When revolving force arrived to a certain degree greatly, following clutch-plate can overcome spring force and move down, and broke away from until last clutch-plate and following clutch-plate, and at this moment, last clutch-plate is idle running just, thereby reached the effect of limit power.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated:
Fig. 1 is the utility model structure diagram.
Mark among the figure: clutch-plate, 5-projection, 6-groove, 7-spring under 1-rotating shaft, 2-change-speed gearing sleeve, the last clutch-plate of 3-, the 4-
The specific embodiment
By shown in Figure 1, the utility model includes: rotating shaft 1, change-speed gearing sleeve 2, the top movable of rotating shaft 1 is touched and is associated with clutch-plate 3, the corresponding clutch-plate 4 down that is provided with below last clutch-plate 3, following clutch-plate 4 is slidingly connected for key with rotating shaft 1, the lower surface of last clutch-plate 3 and the upper surface of following clutch-plate 4 are provided with the projection 5 and the groove 6 of corresponding engagement, and projection 5 and groove 6 have the gradient; Be provided with spring 7 between clutch-plate 4 and the change-speed gearing sleeve 2 below it down.Spring 7 is located at down in the rotating shaft 1 between clutch-plate 4 and the change-speed gearing sleeve 2.
Claims (1)
1. limit power safety labor-saving spanner for one kind, it includes: rotating shaft (1), change-speed gearing sleeve (2), it is characterized in that: the top movable of rotating shaft (1) is touched and is associated with clutch-plate (3), the corresponding clutch-plate (4) down that is provided with in the below of last clutch-plate (3), following clutch-plate (4) is slidingly connected for key with rotating shaft (1), the lower surface of last clutch-plate (3) and the upper surface of following clutch-plate (4) are provided with the projection (5) and the groove (6) of corresponding engagement, and projection (5) and groove (6) have the gradient; Be provided with spring (7) between clutch-plate (4) and the change-speed gearing sleeve (2) below it down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024309 CN2917963Y (en) | 2006-05-06 | 2006-05-06 | Force-limited safety labor-saving spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024309 CN2917963Y (en) | 2006-05-06 | 2006-05-06 | Force-limited safety labor-saving spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2917963Y true CN2917963Y (en) | 2007-07-04 |
Family
ID=38215770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620024309 Expired - Fee Related CN2917963Y (en) | 2006-05-06 | 2006-05-06 | Force-limited safety labor-saving spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2917963Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009324A (en) * | 2012-11-22 | 2013-04-03 | 浙江明磊工具实业有限公司 | Rechargeable screwdriver |
| CN106272249A (en) * | 2016-09-27 | 2017-01-04 | 国网江苏省电力公司江阴市供电公司 | Multifunctional automatic rotary device |
-
2006
- 2006-05-06 CN CN 200620024309 patent/CN2917963Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009324A (en) * | 2012-11-22 | 2013-04-03 | 浙江明磊工具实业有限公司 | Rechargeable screwdriver |
| CN106272249A (en) * | 2016-09-27 | 2017-01-04 | 国网江苏省电力公司江阴市供电公司 | Multifunctional automatic rotary device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |