CN2413861Y - Electric spanner - Google Patents
Electric spanner Download PDFInfo
- Publication number
- CN2413861Y CN2413861Y CN 99239466 CN99239466U CN2413861Y CN 2413861 Y CN2413861 Y CN 2413861Y CN 99239466 CN99239466 CN 99239466 CN 99239466 U CN99239466 U CN 99239466U CN 2413861 Y CN2413861 Y CN 2413861Y
- Authority
- CN
- China
- Prior art keywords
- cylindrical body
- hollow cylindrical
- motor
- electric wrench
- commutation piece
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
An electric spanner is composed of casing, motor, drive mechanism consisting of hollow cylindrical body with a radial notch, a reversing block relative to said notch and with a central axle deviated from said central axle, and a control switch. Because the impact force produces few components, the structure is very simple, and the impact torque can be stably output, which is beneficial to assembling and disassembling tighter bolts and nuts.
Description
The utility model relates to a kind of electric tool, particularly a kind of electric wrench with impact function.
Usually, vehicle tyre adopts bolt and fixed by nut to connect; For driving safety, must revolve quite tightly.Therefore, the dismounting of nut is extremely required great effort, and generally will use pneumatic or electric tool.The pneumatic tool volume is big and heavy, is not easy to carry.Chinese patent discloses a kind of electric wrench No. 95202443.8, is made of shell, motor, transmission mechanism, centrifugal clutch substantially.The impact function of electric wrench forms in the following manner: the balancing weight on the centrifugal clutch produces the centrifugal force that varies in size under different rotating speeds, makes control pin turnover driving element; When control pin withdraws from driving element, the tooth of driving element swing and bump output shaft, the work termination of transmitting motion to is unclamped or is screwed nut.Because the centrifugal clutch arrangement complexity, it is bigger that its dish shape member in use is subjected to impulsive force, is easy to damage, and makes electric wrench shorter service life, and production cost is higher relatively.
The electric wrench that the purpose of this utility model is to provide a kind of simple in structure, long service life, has impact function.
In order to reach above-described purpose, the utility model is achieved through the following technical solutions:
A kind of electric wrench comprises shell, motor, transmission mechanism, gauge tap; Described transmission mechanism includes the hollow cylindrical body that is connected in motor output shaft, be located at the hollow cylindrical body hollow bulb and can and body between the motion output axle of rotating flexibly, the hollow cylindrical body is provided with a radial indent, one is connected on the hollow cylindrical body by its rotating shaft with the recess piece that commutates accordingly, its rotating shaft of deviation of gravity center of commutation piece, the sidewall of commutation piece is provided with a groove, on the hollow cylindrical body, have the cavity volume that holds spring and steel ball with the groove corresponding position, commutation piece depth of groove is less than or equal to the radius of steel ball, motion output axle is provided with the bump recess in hollow cylindrical body indent, and commutation piece downside is provided with and clashes into the corresponding protuberance of recess.
Described motor motor preferably capable of reversing, electric wrench is provided with reversing switch.
Described electric wrench front end preferably is provided with illuminating lamp.
The course of work of the present utility model is as follows: motor rotates and passes motion to the hollow cylindrical body, and the commutation piece of being located at hollow cylindrical body notch portion rotates with body.Because its rotating shaft of deviation of gravity center of commutation piece, it rotates the centrifugal force that produces forces the commutation piece to rotate around its rotating shaft.When the centrifugal force moment of torsion when being arranged in commutation piece sidewall notches steel ball to the moment of torsion of its generation, the commutation piece is motionless with respect to the hollow cylindrical body; Work as faster rotational speed, during to the moment of torsion of its generation, the commutation piece rotates around its rotating shaft the centrifugal force moment of torsion greater than steel ball in the groove.The side impaction protuberance contacts with the bump recess of motion output axle under the commutation piece, and drive motion output axle is impacted and rotated.Motion output axle is subjected to the reverse impact of nut resistance, steel ball is resetted also can repeat above-mentioned motion.When motor output switched in opposite, the centrifugal force direction is opposite during with the motor forward rotation, and another bump protuberance of commutation piece contact with another bump recess of motion output axle, and driving moves exports the rotation of axle reverse impact.
Advantage of the present utility model is: since the generation of impulsive force by with respect to the asymmetric commutation piece of its rotating shaft, be located at the groove in the commutation piece, reach be located at hollow cylindrical intrinsic spring, steel ball formation corresponding with it, member is few, and structure is very simple, makes production cost relatively low; Each element work is stressed less, and service life is longer, and output impulsive torque that can be stable, is beneficial to the tighter bolt of loading and unloading, nut.Because motor is a motor capable of reversing, can loosen, tighten two operations to bolt, nut.The electric wrench front end is provided with illuminating lamp, is beneficial in the dark environment to use.
For the utility model more clearly is described, be elaborated below in conjunction with accompanying drawing and preferred embodiment:
Fig. 1 the utility model cutaway view.
Fig. 2 is the parts exploded perspective view of the utility model transmission mechanism.
Fig. 3 is the utility model commutation piece and hollow cylindrical body joint portion transverse sectional view.
In conjunction with Fig. 1, Fig. 2, shown in Figure 3, electric wrench comprises shell 1, motor 2, transmission mechanism, gauge tap 3.Be provided with the hollow cylindrical body 5 that is connected in motor output shaft 4 in the transmission mechanism.At the hollow bulb of hollow cylindrical body 5, by bearing 17,18 be connected with and body between the motion output axle 6 that can rotate flexibly.Hollow cylindrical body 5 is provided with a radial indent 7, and commutation piece 8 is connected in the recess of hollow cylindrical body 5 by its rotating shaft 9.Its rotating shaft 9 of deviation of gravity center of commutation piece 8 is so that produce centrifugal force in rotation.The sidewall of commutation piece is provided with a groove 10, has the cavity volume 13 that holds spring 11 and steel ball 12 with groove 10 corresponding positions on the hollow cylindrical body.Groove 10 degree of depth are less than or equal to the radius of steel ball 12, can return to after stressed in the cavity volume 13 on the hollow cylindrical body (as Fig. 3) to guarantee steel ball 9.All can in the wherein place commutation piece surface that groove 10 is located at rotating shaft 9 left sides, right side, rear side.As long as the setting of groove 10 can make the steel ball 12 that is placed in one produce certain moment of torsion by countershaft 9.Motion output axle 6 is provided with bump recess 14 in hollow cylindrical body indent, and commutation piece downside is provided with and clashes into the corresponding protuberance 15 of recess.Be provided with catch face 19 and axle sleeve 20 in the outside of bearing 18.
In the utility model, motor 2 motor preferably capable of reversing, electric wrench is provided with reversing switch.The electric wrench front end preferably is provided with illuminating lamp 16.
Claims (3)
1, a kind of electric wrench comprises shell, motor, transmission mechanism, gauge tap; It is characterized in that: described transmission mechanism includes the hollow cylindrical body that is connected in motor output shaft, be located at the hollow cylindrical body hollow bulb and can and body between the motion output axle of rotating flexibly, the hollow cylindrical body is provided with a radial indent, one is connected on the hollow cylindrical body by its rotating shaft with the recess piece that commutates accordingly, its rotating shaft of deviation of gravity center of commutation piece, the sidewall of commutation piece is provided with a groove, on the hollow cylindrical body, have the cavity volume that holds spring and steel ball with the groove corresponding position, motion output axle is provided with the bump recess in hollow cylindrical body indent, commutation piece downside is provided with and clashes into the corresponding protuberance of recess, and commutation piece depth of groove is less than or equal to the radius of steel ball.
2, electric wrench according to claim 1 is characterized in that: described motor is a motor capable of reversing, and electric wrench is provided with reversing switch.
3, according to claim 1, one of 2 described electric wrenches, it is characterized in that: described electric wrench front end is provided with illuminating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239466 CN2413861Y (en) | 1999-08-31 | 1999-08-31 | Electric spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239466 CN2413861Y (en) | 1999-08-31 | 1999-08-31 | Electric spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2413861Y true CN2413861Y (en) | 2001-01-10 |
Family
ID=34026728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99239466 Expired - Fee Related CN2413861Y (en) | 1999-08-31 | 1999-08-31 | Electric spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2413861Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318184C (en) * | 2002-01-28 | 2007-05-30 | 芝加哥气动工具公司 | Power impact tool torque apparatus |
| CN103567940A (en) * | 2012-08-02 | 2014-02-12 | 袁红娟 | Electric torque wrench |
| CN103619542A (en) * | 2011-04-21 | 2014-03-05 | 乔治雷诺公司 | Electric impact screwdriver |
| CN105972021A (en) * | 2016-07-14 | 2016-09-28 | 魏小鲁 | Unilaterally-operable connecting device for steel structure connection and electric installation tool |
| CN106041807A (en) * | 2016-06-24 | 2016-10-26 | 无锡欧诺锁业有限公司 | High-safety socket spanner |
| CN107073661A (en) * | 2014-10-07 | 2017-08-18 | 阿尔温德·库马尔·特尔集拉波莉·帕拉马西万 | automatic fastener assembly |
-
1999
- 1999-08-31 CN CN 99239466 patent/CN2413861Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318184C (en) * | 2002-01-28 | 2007-05-30 | 芝加哥气动工具公司 | Power impact tool torque apparatus |
| CN103619542A (en) * | 2011-04-21 | 2014-03-05 | 乔治雷诺公司 | Electric impact screwdriver |
| CN103619542B (en) * | 2011-04-21 | 2016-06-29 | 乔治雷诺公司 | Electric impact screwdriver |
| CN103567940A (en) * | 2012-08-02 | 2014-02-12 | 袁红娟 | Electric torque wrench |
| CN107073661A (en) * | 2014-10-07 | 2017-08-18 | 阿尔温德·库马尔·特尔集拉波莉·帕拉马西万 | automatic fastener assembly |
| CN107073661B (en) * | 2014-10-07 | 2019-03-19 | 阿尔温德·库马尔·特尔集拉波莉·帕拉马西万 | Automatic fastener assembly |
| CN106041807A (en) * | 2016-06-24 | 2016-10-26 | 无锡欧诺锁业有限公司 | High-safety socket spanner |
| CN105972021A (en) * | 2016-07-14 | 2016-09-28 | 魏小鲁 | Unilaterally-operable connecting device for steel structure connection and electric installation tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhao Jiaqiang Document name: payment instructions |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhao Jiaqiang Document name: Notification of Termination of Patent Right |
|
| 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 |