CN2506402Y - 12 volt electric wrench for vehicle - Google Patents
12 volt electric wrench for vehicle Download PDFInfo
- Publication number
- CN2506402Y CN2506402Y CN 01268280 CN01268280U CN2506402Y CN 2506402 Y CN2506402 Y CN 2506402Y CN 01268280 CN01268280 CN 01268280 CN 01268280 U CN01268280 U CN 01268280U CN 2506402 Y CN2506402 Y CN 2506402Y
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- CN
- China
- Prior art keywords
- volts
- vehicle
- electric spanner
- eccentric shaft
- squirrel
- 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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Abstract
An electric wrench used for a vehicle of 12 volts comprises a housing 1, a motor 18 which is arranged in the housing 1, an eccentric shaft 8, a lead 19 and an electric outlet 21, and is mainly characterized in that the electric wrench has a pinion 2 which is arranged in the shaft of the motor 18, the electric wrench comprises a gearwheel 4 which is meshed with the pinion 2, the gearwheel 4 is rotatablely connected with a squirrel cage clutch 7 in a friction type, and the eccentric shaft 8 is rotatablely connected with the squirrel cage clutch 7 through a large bearing 22 and a bearing 14. The electric wrench can ensure no burning the motor. Proved by experiment, the electric wrench has relatively simple structure, easy manufacture, reliable running and long service life and more importantly ensures high speed, efficiency and safety of using vehicle.
Description
The utility model relates to a kind of electric wrench, refers in particular to a kind of 12 volts of electric spanner for vehicle, uses this spanner bolt, nut on the demolition, installation vehicle easily, should be divided into the B25B group in International Patent Classification (IPC).
At present, mostly known spanner is to use manual operation, also is feasible certainly; Its main shortcoming is: require great effort, be difficult to make bolt and nut to reach stronger coupling mechanism force, lose time.Obviously this purpose with high-speed, the high efficiency of using vehicle and security is contrary.Occur some electric wrenches recently, used this electric wrench to guarantee the purpose of high-speed, high efficiency and security really; Yet this electric wrench still has a significant disadvantages: when motor reaches certain rotating speed and bolt and nut and reaches certain coupling mechanism force, the gear of known electric wrench can stop operating 1-5 second, this phenomenon can cause burning the possibility of electric wrench fuse, burning electric wrench motor, burning automobile fuse, not only can cause loss economically, and be difficult to realize high-speed, high efficiency.
The purpose of this utility model is to overcome the deficiency of above-mentioned electric wrench, provide a kind of and can either guarantee high-speed, high efficiency and security, can guarantee can not burn 12 volts of electric spanner for vehicle of electric wrench fuse, electric wrench motor, automobile fuse again.
The purpose of this utility model is achieved through the following technical solutions: described electric spanner for vehicle comprises housing (1), be installed in the motor (18) in the housing (1), eccentric shaft (8), lead (19), supply socket (21), main feature is: described electric spanner for vehicle has a pinion (2), described pinion (2) is installed on the axle of motor (18), described electric spanner for vehicle comprises a gear wheel (4) that is meshed with pinion (2), described gear wheel (4) is friction-type with squirrel-cage clutch (7) and is rotationally connected, and described eccentric shaft (8) is by big bearing (22), bearing (14) and squirrel-cage clutch (7) are and are rotationally connected.
The inside of described gear wheel (4) is hollow circular cylinder, has axial groove on the surface of hollow circular cylinder, and fricting strip (13) is installed in described axial groove.
The quantity of described axial groove 〉=2, quantity 〉=2 of described fricting strip (13).
The quantity of described axial groove can be chosen as 3-6, and the quantity of described fricting strip (13) can be chosen as 3-6.
Described squirrel-cage clutch (7) comprises two discoid bodies, periphery at described two discoid bodies is linked into an integrated entity two discoid bodies by 4 cylinders, described two discoid bodies are parallel to each other, upward be symmetrical arranged two pins (5) at described squirrel-cage clutch (7) perpendicular to described two discoid bodies, an impact block (6) that rotates around pin (5) is installed respectively on described two pins (5), described impact block (6) is an arc, pressing plate (11) is installed in the outside at described impact block (6), an end that connects a spring (12) in the both sides of described pressing plate (11) respectively, upward be symmetrical arranged two pins (23) at described squirrel-cage clutch (7) perpendicular to described two discoid bodies, the other end of described spring (12) is connected on described two pins (23), the centre of described two discoid bodies has circular hole, and wherein the centre of the discoid body on right side has the cylinder of a hollow of extending to the right; On the cylinder of described hollow, be with gear wheel (4).
Described eccentric shaft (8) is connected with housing (1) by axle sleeve (9), the square cylinder of the front portion of described eccentric shaft (8) for matching with standard cartridges, on the right side of square cylinder is cylinder, the part of the eccentric shaft (8) at place has a projection to a side in the middle of corresponding squirrel-cage clutch (7), end at described eccentric shaft (8) has a small cylinder of inwardly receiving, and bearing (14) is housed on described small cylinder.
Pearl is bumped in being equipped with foremost of described eccentric shaft (8), is connected with standard cartridges with convenient.
Described 12 volts of electric spanner for vehicle have a support (17), the circle hole sleeve of one side of described support (17) is on the axle of motor (18), on the axle of described motor (18), bearing (16) is housed, described pinion (2) is connected with bearing (16), the small column that a projection is arranged at the opposite side of described support (17), be with bearing on described small column, described bearing is installed in the cylinder of the hollow that the discoid body on squirrel-cage clutch (7) right side extends to the right.
Described 12 volts of electric spanner for vehicle have a reversing switch.
Described fricting strip is the rubber friction bar.Can select the elastomeric material manufacturing of import.
Below in conjunction with drawings and Examples the utility model is further specified, wherein:
Fig. 1 is the cutaway view of the utility model concrete structure.
Fig. 2 is the front view of the exterior contour of gear wheel.
Fig. 3 is the left view of the exterior contour of gear wheel.
Fig. 4 is the cutaway view of squirrel-cage clutch.
Accompanying drawings concrete structure of the present utility model.In the accompanying drawings, 1 is that housing, 2 for motor, 19 for power line, 20 for reversing switch, 21 for attaching plug, 22 for big bearing, 23 is pin for support, 18 with back-up ring, 16 for bearing, 17 for the hole for bearing, 15 for fricting strip, 14 for spring, 13 for pressing plate, 12 for back-up ring, 11 for axle sleeve, 10 for eccentric shaft, 9 for squirrel-cage clutch, 8 for impact block, 7 for pin, 6 for gear wheel, 5 for axle-steel silk back-up ring, 4 for pinion, 3.
Accompanying drawing 1 has provided the cutaway view of concrete structure of the present utility model.Except attaching plug all is exposed at the outside that the outside of electric wrench and eccentric shaft (8) and reversing switch (20) part are exposed at electric wrench, other parts of all of electric wrench all are placed on the inside of housing (1).The several topmost parts that can see from accompanying drawing 1 are: reversing switch (20), by the motor (18) of reversing switch (20) control, be installed in pinion (2) on motor (18) axle, with the gear wheel (4) of pinion (2) engagement, be installed in fricting strip (13) on the gear wheel (4), squirrel-cage clutch (7) that part is connected with gear wheel (4) assembling, pass through big bearing (22) and bearing (14) assembles the eccentric shaft (8) that is connected with squirrel-cage clutch (7).
Fig. 2 is the exterior contour figure of relevant gear wheel with Fig. 3, has omitted the lines of the relevant gear teeth.
Operation principle of the present utility model is as follows: be not activated or motor (18) when just starting at motor (18), because the effect of left and right sides spring (12), make impact block (6) be in relative balance state, the bossing of eccentric shaft this moment (8) is not collided with impact block (6), and eccentric shaft (8) can not rotate.After motor (18) starts, motor (18) rotates, the pinion (2) that is contained on motor (18) axle rotates, rotate with the gear wheel (4) of pinion (2) engagement thereupon, because being friction-type with squirrel-cage clutch (7), gear wheel (4) is rotationally connected, thus also rotation thereupon of squirrel-cage clutch (7), when motor just starts, rotating speed is not high enough, and eccentric shaft (8) can not rotate as previously mentioned.When reaching certain rotating speed, because action of centrifugal force left and right sides spring stress is inhomogeneous, the impact block (6) that is contained on the squirrel-cage clutch (7) will inevitably rotate around pin (5), and consequently impact block (6) is collided with the projection on the eccentric shaft (8) and caused eccentric shaft (8) to rotate.Because the rotation of eccentric shaft (8) just can be torn open, unloaded bolt or nut.Tearing, unload bolt or nut open can finish by turning to of reversing switch (20) change motor (18).
To finish through impacting several times when general clamping screw or nut.Coupling mechanism force can increase gradually, and along with the increase of coupling mechanism force, the rotating speed of squirrel-cage clutch (7) can reduce, finally can be because the projection on impact block (6) and the eccentric shaft (8) that evenly makes of left and right sides spring stress breaks away from, so eccentric shaft (8) stops operating.Topmost characteristics of the present utility model are: at eccentric shaft (8) when not rotating and even the rotating speed of squirrel-cage clutch (7) reduces or when not rotating, gear of this electric wrench and motor can not stop operating, described gear wheel (4) is friction-type and rotates on squirrel-cage clutch (7), this also is the major function of fricting strip (13).Because the new operation principle of above-mentioned electric wrench can make motor load even relatively, guarantee can not burn motor.Certainly the probability that changes the electric wrench fuse or change automobile fuse is greatly reduced.
Experimental results show that this electric wrench structure is simple relatively, easy to manufacture, reliable operation, long service life, the more important thing is high-speed, high efficiency, the high security that can guarantee with car.
Claims (10)
1. 12 volts of electric spanner for vehicle, described electric spanner for vehicle comprises housing (1), be installed in the motor (18) in the housing (1), eccentric shaft (8), lead (19), supply socket (21), it is characterized in that: described electric spanner for vehicle has a pinion (2), described pinion (2) is installed on the axle of motor (18), described electric spanner for vehicle comprises a gear wheel (4) that is meshed with pinion (2), described gear wheel (4) is friction-type with squirrel-cage clutch (7) and is rotationally connected, and described eccentric shaft (8) is by big bearing (22), bearing (14) and squirrel-cage clutch (7) are and are rotationally connected.
2. 12 volts of electric spanner for vehicle according to claim 1 is characterized in that: the inside of described gear wheel (4) is hollow circular cylinder, has axial groove on the surface of hollow circular cylinder, and fricting strip (13) is installed in described axial groove.
3. according to claim 1,2 described 12 volts of electric spanner for vehicle, it is characterized in that: the quantity of described axial groove 〉=2, quantity 〉=2 of described fricting strip (13).
4. according to claim 1,2 described 12 volts of electric spanner for vehicle, it is characterized in that: the quantity of described axial groove is 3-6, and the quantity of described fricting strip (13) is 3-6.
5. 12 volts of electric spanner for vehicle according to claim 1, it is characterized in that: described squirrel-cage clutch (7) comprises two discoid bodies, periphery at described two discoid bodies is linked into an integrated entity two discoid bodies by 4 cylinders, described two discoid bodies are parallel to each other, upward be symmetrical arranged two pins (5) at described squirrel-cage clutch (7) perpendicular to described two discoid bodies, an impact block (6) that rotates around pin (5) is installed respectively on described two pins (5), described impact block (6) is an arc, pressing plate (11) is installed in the outside at described impact block (6), an end that connects a spring (12) in the both sides of described pressing plate (11) respectively, upward be symmetrical arranged two pins (23) at described squirrel-cage clutch (7) perpendicular to described two discoid bodies, the other end of described spring (12) is connected on described two pins (23), the centre of described two discoid bodies has circular hole, and wherein the centre of the discoid body on right side has the cylinder of a hollow of extending to the right; On the cylinder of described hollow, be with gear wheel (4).
6. 12 volts of electric spanner for vehicle according to claim 1, it is characterized in that: described eccentric shaft (8) is connected with housing (1) by axle sleeve (9), the square cylinder of the front portion of described eccentric shaft (8) for matching with standard cartridges, on the right side of square cylinder is cylinder, the part of the eccentric shaft (8) at place has a projection to a side in the middle of corresponding squirrel-cage clutch (7), end at described eccentric shaft (8) has a small cylinder of inwardly receiving, and bearing (14) is housed on described small cylinder.
7. 12 volts of electric spanner for vehicle according to claim 1 is characterized in that: pearl is bumped in being equipped with foremost of described eccentric shaft (8).
8. 12 volts of electric spanner for vehicle according to claim 1, it is characterized in that: described 12 volts of electric spanner for vehicle have a support (17), the circle hole sleeve of one side of described support (17) is on the axle of motor (18), on the axle of described motor (18), bearing (16) is housed, described pinion (2) is connected with bearing (16), the small column that a projection is arranged at the opposite side of described support (17), be with bearing on described small column, described bearing is installed in the cylinder of the hollow that the discoid body on squirrel-cage clutch (7) right side extends to the right.
9. 12 volts of electric spanner for vehicle according to claim 1 is characterized in that: described 12 volts of electric spanner for vehicle have a reversing switch.
10. 12 volts of electric spanner for vehicle according to claim 1 is characterized in that: described fricting strip is the rubber friction bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268280 CN2506402Y (en) | 2001-10-19 | 2001-10-19 | 12 volt electric wrench for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268280 CN2506402Y (en) | 2001-10-19 | 2001-10-19 | 12 volt electric wrench for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506402Y true CN2506402Y (en) | 2002-08-21 |
Family
ID=33674491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268280 Expired - Fee Related CN2506402Y (en) | 2001-10-19 | 2001-10-19 | 12 volt electric wrench for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2506402Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101641186B (en) * | 2007-09-21 | 2011-06-08 | 日立工机株式会社 | Impact tool |
-
2001
- 2001-10-19 CN CN 01268280 patent/CN2506402Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101641186B (en) * | 2007-09-21 | 2011-06-08 | 日立工机株式会社 | Impact tool |
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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 |