CN204108916U - A kind of load adjustable antioverloading formula screwdriver - Google Patents
A kind of load adjustable antioverloading formula screwdriver Download PDFInfo
- Publication number
- CN204108916U CN204108916U CN201420612517.1U CN201420612517U CN204108916U CN 204108916 U CN204108916 U CN 204108916U CN 201420612517 U CN201420612517 U CN 201420612517U CN 204108916 U CN204108916 U CN 204108916U
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- CN
- China
- Prior art keywords
- annular groove
- knife bar
- base
- screw
- spring
- 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
Links
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a kind of load adjustable antioverloading formula screwdriver, comprises handle, knife bar, circular hole, screw hole, trip bolt, spring, base, first order annular groove, second level annular groove, driver bit.The utility model structure is simple, easy to use, when carrying out dismounting to screw and being fastening, when screwdriver reaches certain limit to screw applied force square, driver bit just can skid, thus can effectively prevent because moment is excessive and cause screw to damage, and the size of the maximum moment of its load can be changed, so not only can reduce use cost, and the labour intensity of workmen can be reduced, be conducive to increasing work efficiency.
Description
Technical field
The utility model relates to a kind of screwdriver, and specifically a kind of load adjustable antioverloading formula screwdriver, belongs to machine tool technical field.
Background technology
Often need to use screwdriver to carry out dismounting and fastening to screw in machine work.At present in the polygonal structure of producing and in life, the groove of widely used screw is mostly rule, because workmen carries out dismantling and being difficult to control moment exactly in fastening process to screw at use screwdriver, often easily exceed the maximum moment that screw can carry, the groove of screw head is caused to damage, cause screwdriver to skid, bring unnecessary trouble to machine work.
Although can measure exactly at the digital force moment screw cutter produced and use in life at present and read the moment that screw carries, due to the expensive and poor reliability of digital force moment screw cutter, cannot use in machine work on a large scale.Therefore can effectively prevent moment excessive and the screwdriver causing screw to damage in the urgent need to a kind of.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of structure simple, easy to use, and can effectively prevent moment excessive and load that is that cause screw to damage adjustable antioverloading formula screwdriver.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of load adjustable antioverloading formula screwdriver, comprise handle, knife bar, circular hole, screw hole, trip bolt, spring, base, first order annular groove, second level annular groove, driver bit, it is characterized in that: one end of described handle is provided with knife bar, one end of handle is fixedly connected with one end of knife bar, circular hole is provided with in knife bar, knife bar is provided with screw hole, trip bolt is provided with in screw hole, spring and base is provided with in circular hole, the outer wall of base is provided with first order annular groove and second level annular groove, spring and base embedding are arranged on after in the circular hole in knife bar, trip bolt also embeds in the first order annular groove or second level annular groove that are arranged on base outer wall through the screw hole be arranged on knife bar, spring and base are fixed in knife bar, one end of base is fixedly connected with the top of driver bit.
The length of described knife bar is greater than the height of described base.
The drift of described spring is greater than the length of described knife bar.
Described handle, knife bar, base are cylindrical structural.
The width of described first order annular groove and second level annular groove is greater than the diameter of the screw rod of described trip bolt.
The height of described base is greater than the width of described first order annular groove and second level annular groove.
Described spring is cylindrical helical spring.
The diameter of described circular hole is greater than the external diameter of described spring.
The diameter of described circular hole is greater than the external diameter of described base.
Compared with prior art, the utility model has following beneficial effect: structure is simple, easy to use, when carrying out dismounting to screw and being fastening, when screwdriver reaches certain limit to screw applied force square, driver bit just can skid, thus can effectively prevent because moment is excessive and cause screw to damage, and the size of the maximum moment of its load can be changed, so not only use cost can be reduced, and the labour intensity of workmen can be reduced, be conducive to increasing work efficiency.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model.
Fig. 2 is stereochemical structure exploded perspective view of the present utility model.
In figure: 1-handle, 2-knife bar, 3-circular hole, 4-screw hole, 5-trip bolt, 6-spring, 7-base, 8-first order annular groove, 9-second level annular groove, 10-driver bit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of load adjustable antioverloading formula screwdriver, comprise handle 1, knife bar 2, circular hole 3, screw hole 4, trip bolt 5, spring 6, base 7, first order annular groove 8, second level annular groove 9, driver bit 10, it is characterized in that: one end of described handle 1 is provided with knife bar 2, one end of handle 1 is fixedly connected with one end of knife bar 2, circular hole 3 is provided with in knife bar 2, knife bar 2 is provided with screw hole 4, trip bolt 5 is provided with in screw hole 4, spring 6 and base 7 is provided with in circular hole 3, the outer wall of base 7 is provided with first order annular groove 8 and second level annular groove 9, spring 6 and base 7 embedding are arranged on after in the circular hole 3 in knife bar 2, trip bolt 5 also embeds in the first order annular groove 8 or second level annular groove 9 that are arranged on base 7 outer wall through the screw hole 4 be arranged on knife bar 2, spring 6 and base 7 are fixed in knife bar 2, one end of base 7 is fixedly connected with the top of driver bit 10.
The length of described knife bar 2 is greater than the height of described base 7.
The drift of described spring 6 is greater than the length of described knife bar 2.
Described handle 1, knife bar 2, base 7 are cylindrical structural.
The width of described first order annular groove 8 and second level annular groove 9 is greater than the diameter of the screw rod of described trip bolt 5.
The height of described base 7 is greater than the width of described first order annular groove 8 and second level annular groove 9.
Described spring 6 is cylindrical helical spring.
The diameter of described circular hole 3 is greater than the external diameter of described spring 6.
The diameter of described circular hole 3 is greater than the external diameter of described base 7.
When needs carry out dismounting to screw and are fastening, being aimed at by driver bit 10 and embedding needs to be disassembled with in the groove of fastening screw, then turning handle 1 can carry out dismounting and fastening to screw, when moment is greater than the frictional force at spring 6 pairs of base 7 tops, base 7 just can skid in knife bar 2, now increase moment in any case and all can not carry out dismounting and fastening to screw again, thus can effectively prevent because moment is excessive and cause screw to damage.
When need to regulate its can the size of maximum moment of load time, first screw out trip bolt 5, then according to actual needs by first order annular groove 8 or second level annular groove 9 alignment screw hole 4, finally the screw rod of trip bolt 5 is embedded in first order annular groove 8 or second level annular groove 9 can change its can the size of maximum moment of load.
The above is preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (2)
1. a load adjustable antioverloading formula screwdriver, comprise handle (1), knife bar (2), circular hole (3), screw hole (4), trip bolt (5), spring (6), base (7), first order annular groove (8), second level annular groove (9), driver bit (10), it is characterized in that: one end of described handle (1) is provided with knife bar (2), one end of handle (1) is fixedly connected with one end of knife bar (2), circular hole (3) is provided with in knife bar (2), knife bar (2) is provided with screw hole (4), trip bolt (5) is provided with in screw hole (4), spring (6) and base (7) is provided with in circular hole (3), the outer wall of base (7) is provided with first order annular groove (8) and second level annular groove (9), spring (6) and base (7) embedding are arranged on after in the circular hole (3) in knife bar (2), trip bolt (5) is through the screw hole (4) be arranged on knife bar (2) and embed in the first order annular groove (8) that is arranged on base (7) outer wall or second level annular groove (9), spring (6) and base (7) are fixed in knife bar (2), one end of base (7) is fixedly connected with the top of driver bit (10).
2. a kind of load according to claim 1 adjustable antioverloading formula screwdriver, is characterized in that: the length of described knife bar (2) is greater than the height of described base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612517.1U CN204108916U (en) | 2014-10-22 | 2014-10-22 | A kind of load adjustable antioverloading formula screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612517.1U CN204108916U (en) | 2014-10-22 | 2014-10-22 | A kind of load adjustable antioverloading formula screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204108916U true CN204108916U (en) | 2015-01-21 |
Family
ID=52326271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420612517.1U Expired - Fee Related CN204108916U (en) | 2014-10-22 | 2014-10-22 | A kind of load adjustable antioverloading formula screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204108916U (en) |
-
2014
- 2014-10-22 CN CN201420612517.1U patent/CN204108916U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |