CN2770884Y - Two-way impact type electric and pneumatic wrench - Google Patents
Two-way impact type electric and pneumatic wrench Download PDFInfo
- Publication number
- CN2770884Y CN2770884Y CN 200520039799 CN200520039799U CN2770884Y CN 2770884 Y CN2770884 Y CN 2770884Y CN 200520039799 CN200520039799 CN 200520039799 CN 200520039799 U CN200520039799 U CN 200520039799U CN 2770884 Y CN2770884 Y CN 2770884Y
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- impact
- flywheel
- block
- impact block
- center
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- Expired - Fee Related
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to a two-way impact electric and pneumatic wrench which comprises a wrench casing, an electric motor or a wind motor, a clutch, a flywheel, a main shaft and a convex lock on the main shaft. The utility model is characterized in that the flywheel has two opposite shaft pins which are respectively sheathed with an impact block; each impact block is an imbalanced block which uses each shaft pin as a rotating center; the inner surface of each impact block is a circular arc face; the impact blocks on the two shaft pins are arranged symmetrically; the center of the heavy end surface of each impact block which uses the shaft pin as the center is provided with a waist-shaped slot; a bumper pin which is arranged in the waist-shaped slot is fixedly connected with the flywheel, and the heavy ends of the two impact blocks are connected by a tension spring. The utility model has the advantages that the effect that the force moment of the impact electric and pneumatic wrench is consistent can be assured when a bolt is screwed and disassembled because the compact of the symmetric two-way force moment of the two-way impact electric and pneumatic wrench is realized.
Description
Technical field
The utility model relates to a kind of electronic and pneumatic impact spanner, the electronic and pneumatic impact spanner of particularly a kind of two-way impacting type.
Background technology
In existing vehicle maintenance maintenance, often utilize the percussive electric wrench to twist and tear bolt open, but owing in the vehicle maintenance the stubborn of bolt torn open, and screw thread has again clockwise and counter clockwise direction, because the moment of tightening of bolt has strict requirement, therefore need forward and reverse two-way percussive electric wrench that knocks the moment unanimity, and utilize dc motor power positive and negatively accomplish positive and negative two-way rotation easily, but because the impact structure of existing two-way percussive electric wrench is after commutation, can not guarantee moment unanimity when two-way knocking, influence the use of electric wrench.
Summary of the invention
The purpose of this utility model is to solve often to utilize the stubborn bolt of tearing open of percussive electric wrench in the prior art in the existing vehicle maintenance maintenance, but owing in the vehicle maintenance the stubborn of bolt torn open, and screw thread has again clockwise and counter clockwise direction, because the moment of tightening of bolt has strict requirement, therefore need forward and reverse two-way percussive electric wrench that knocks the moment unanimity, and utilize dc motor power positive and negatively accomplish positive and negative two-way rotation easily, but because the impact structure of existing two-way percussive electric wrench is after commutation, can not guarantee moment unanimity when two-way knocking, influence the problem of the use of electric wrench.The utility model designs the electronic and pneumatic impact spanner of a kind of two-way impacting type, comprise casing, motor or wind motor, clutch, flywheel, projection on main shaft and the main shaft, it is characterized in that: two relative pivot pins are arranged on flywheel, respectively be with impact block on the pivot pin, impact block is that pivot pin is the weighting block of center of rotation, the medial surface of impact block is an arc surface, impact block on two pivot pins is symmetry and places, impact block is that the center on the heavy end face at center has a kidney slot with the pivot pin, backing pin is arranged in kidney slot, backing pin is fixedly connected on the flywheel, and the heavily end of two impact blocks has extension spring to be connected.The utility model has the advantages that the bump of the bi-directional symmetrical moment that can realize the electronic and pneumatic impact spanner of impacting type, guarantee that the electronic and pneumatic impact spanner of impacting type is in the moment unanimity of twisting when tearing bolt open.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated,
Accompanying drawing 1 is a structural representation of the present utility model,
Accompanying drawing 2 is an AA generalized section of the present utility model,
The specific embodiment
Comprise the projection 6 on casing 1, motor or wind motor 2, clutch 3, flywheel 4, main shaft 5 and the main shaft 5 among the figure, it is characterized in that: two relative pivot pins 7 are arranged on flywheel 4, respectively be with impact block 8 on the pivot pin 7, impact block 8 is that pivot pin 7 is the weighting block of center of rotation, the medial surface of impact block 8 is an arc surface, impact block 8 on two pivot pins 7 is symmetry and places, impact block 8 is that the center on the heavy end face at center has a kidney slot 9 with the pivot pin, backing pin 10 is arranged in kidney slot 9, backing pin 10 is fixedly connected on the flywheel 4, and the heavily end of two impact blocks 8 has extension spring 11 to be connected.During use after motor 2 drives clutches 3 and flywheel 4 rotations, impact block 8 on the flywheel 4 is subjected to action of centrifugal force and is the outer tendency of falling, when rotating speed reaches certain, the centrifugal force that impact block 8 is subjected to draws back extension spring 11 greater than the pulling force of extension spring 11, impact block 8 is owing to be to be the weighting block at center with pivot pin 7, therefore two impact blocks 8 all can rotate around pivot pin 7, because the center of heavily holding a side of two impact blocks 8 is-kidney slot 9, be fixedly connected on backing pin 10 on the flywheel 4 in the kidney slot 9, therefore the heavily end of impact block 8 can rotate toward the outside of flywheel 4 around pivot pin 7, because two impact blocks 9 are symmetry and place, so clockwise another piece rotates counterclockwise, if when this moment, flywheel 4 rotated for clockwise direction, the impact block 8 that turns clockwise will clash into the projection 6 on the main shaft 5, drive main shaft 5 and clockwise rotate.And when flywheel 4 counterclockwise rotates, the impact block 8 that is rotated counterclockwise will clash into the projection 6 on the main shaft 5, driving main shaft 5 rotates counterclockwise, finish the bump of the bi-directional symmetrical moment of the electronic and pneumatic impact spanner of impacting type, the speed of bump rear flywheel 4 reduces, and the suffered centrifugal force of impact block 8 reduces, and the answer pulling force of extension spring 11 is two impact blocks, 8 past pulling back, impact block 8 turns to heavily till kidney slot 9 on the end stopped by the backing pin on the flywheel 4 10 around pivot pin 7, and impact block 8 restores.
Claims (1)
- Electronic and the pneumatic impact spanner of a kind of two-way impacting type, comprise the projection on casing, motor or wind motor, clutch, flywheel, main shaft and the main shaft, it is characterized in that: two relative pivot pins are arranged on flywheel, respectively be with impact block on the pivot pin, impact block is that pivot pin is the weighting block of center of rotation, the medial surface of impact block is an arc surface, impact block on two pivot pins is symmetry and places, impact block is that the center on the heavy end face at center has a kidney slot with the pivot pin, backing pin is arranged in kidney slot, backing pin is fixedly connected on the flywheel, and the heavily end of two impact blocks has extension spring to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039799 CN2770884Y (en) | 2005-02-25 | 2005-02-25 | Two-way impact type electric and pneumatic wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039799 CN2770884Y (en) | 2005-02-25 | 2005-02-25 | Two-way impact type electric and pneumatic wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2770884Y true CN2770884Y (en) | 2006-04-12 |
Family
ID=36704670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520039799 Expired - Fee Related CN2770884Y (en) | 2005-02-25 | 2005-02-25 | Two-way impact type electric and pneumatic wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2770884Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108942768A (en) * | 2018-09-05 | 2018-12-07 | 上海运征机电科技有限公司 | A kind of small-sized DC bumping electric spanner |
-
2005
- 2005-02-25 CN CN 200520039799 patent/CN2770884Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108942768A (en) * | 2018-09-05 | 2018-12-07 | 上海运征机电科技有限公司 | A kind of small-sized DC bumping electric spanner |
| CN108942768B (en) * | 2018-09-05 | 2020-04-07 | 上海运征机电科技有限公司 | Small-size direct current striking formula electric spanner |
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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 |