CN202428371U

CN202428371U - Semi-automatic wrench

Info

Publication number: CN202428371U
Application number: CN201220006256XU
Authority: CN
Inventors: 沈凌韬
Original assignee: HAIRISHEN ELECTRICAL APPLIANCE PRODUCTS (SHENZHEN) CO Ltd
Current assignee: Hairisheng automobile electronic technology (Changzhou) Co., Ltd
Priority date: 2012-01-09
Filing date: 2012-01-09
Publication date: 2012-09-12
Anticipated expiration: 2022-01-09

Abstract

The embodiment of the utility model discloses a semi-automatic wrench. The semi-automatic wrench comprises a power supply, a motor electrically connected to the power supply, a clutch connected to the motor, and an output shaft engaged with a clutch output gear of the clutch, wherein the clutch is provided with a rotary shaft and a rotary shaft sleeve; the rotary shaft sleeve is sleeved with a compression spring which is leaned against a spring seat; the spring seat presses a roll ball in a clutch groove; the clutch output shaft is fixedly arranged on the clutch groove; and the clutch output shaft drives the clutch output gear to rotate. The semi-automatic wrench can automatically separate the clutch according to torsion of a screw to avoid damage of the motor. Meanwhile, the screw is always screwed and unscrewed by the wrench with the aid of electric power in most time, so that time and effort of a user are saved, the service life of the wrench is prolonged, and simultaneously, the automation request of the user is satisfied.

Description

A kind of semi-automatic spanner

Technical field

The utility model relates to a kind of spanner, relates in particular to a kind of semi-automatic spanner.

Background technology

Vehicle is re-type in the open air, is a kind of work of bothersome effort.The handling instrument that doughnut is commonly used comprises box spanner, monkey wrench or the like, and spanner wherein commonly used has manual wrench and electric wrench.

Utility model people finds in use, present manual wrench, and the action that the user need tighten always or back-out, and the screw of general doughnut comprises 4, in addition more, this just takes time and effort very much, brings great inconvenience to the user.And often there is the not enough situation of torsion in electric wrench, and motor regular meeting works turning round under the motionless situation, thereby causes motor to be burnt out, and has problems such as fragile, that the life-span is short.

The utility model content

The utility model embodiment technical problem to be solved is, a kind of semi-automatic spanner is provided.Can between automatic and semi-automatic, switch automatically according to current moment of torsion according in the process that tightens or back-out screw.

In order to solve the problems of the technologies described above; The utility model embodiment provides a kind of semi-automatic spanner; Comprise: power supply and the motor that is electrically connected with said power supply; The output shaft of said motor is connected with one speed reducer, and the output shaft of said decelerator is connected with a clutch, and the rotation axis that the output shaft of said clutch and is used to screw screw is connected;

Wherein, be provided with in the said clutch:

Turning cylinder and rotary axle box; Sheathed compression spring on the said rotary axle box, said compression spring compresses spring base, and said spring base is pressed on spin in the clutch cell body; Clutch output shaft is installed on the said clutch cell body, and said clutch output shaft is provided with clutch output gear.

Wherein, said decelerator is one group of planetary gear.

Wherein, said rotation axis is provided with bevel gear and the engagement of said clutch output gear, and said rotation axis is vertical each other with the output shaft of said clutch.

Wherein, said spin comprises any one or more in steel ball, iron ball and the copper ball.

Wherein, be set in ratchet on the said rotation axis.

Wherein, said motor is a direct current motor, the planet tooth engagement of the straight-tooth of said direct current generator output shaft and said planetary gear.

Wherein, also comprise a long handle operating portion.

Wherein, also comprise a switch key, be used to control said power supply and supply power to said motor.

Implement the utility model embodiment, have following beneficial effect:

Semi-automatic spanner in the utility model can automatically break away from clutch according to the moment of torsion of screw, avoids the damage of motor.Simultaneously, in the process that tightens and back-out of screw, most of time is to adopt electronic twisting, also be that the user is time saving and energy saving, increase spanner service life, has also satisfied the demand of user's automation.

Description of drawings

Fig. 1 is that the structure of the semi-automatic spanner of the utility model embodiment is formed sketch map;

Fig. 2 is that wherein a kind of concrete structure of the semi-automatic spanner of the utility model embodiment is formed sketch map.

The specific embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

See also Fig. 1; The structure that is the semi-automatic spanner of the utility model embodiment is formed sketch map; Said semi-automatic spanner in the present embodiment comprises: power supply 1 and the motor 2 that is electrically connected with said power supply 1, and the output shaft of said motor 2 is connected with one speed reducer 3; The output shaft of said decelerator 3 is connected with a clutch 4, and the rotation axis 5 that the output shaft of said clutch 4 and is used to screw screw is connected.

Said power supply 1 can be dc source, can be external to vehicle-mounted dc source and be this semi-automatic spanner power supply.

Said motor 2 can be for flow motor always; The planet tooth engagement of the straight-tooth of direct current generator output shaft and planet wheel decelerator 3 through behind the double reduction, outputs to said clutch 4 bodies through the central shaft that is connected with planetary plate; Driving said clutch 4 rotates; Thereby output to said rotation axis 5, drive said rotation axis 4 and rotate, thereby realize tightening or back-outing screw.Said clutch 4 can when surpassing certain resistance, be thrown off transmission according to the size of the resistance that screw produced in the electronic course of work, and the user continues to reach the purpose that tightens or back-out through this semi-automatic spanner of manpower twisting again.

In tightening the process of screw, the said semi-automatic spanner of the utility model tightened through electronic in most of stage, and when the resistance of screw feedback reached certain value, said clutch 4 was thrown off transmission, and last fraction tightens with manpower.The user only need do the last work that tightens, and is time saving and energy saving.

In back-outing the process of screw, the said semi-automatic spanner of the utility model is a manual state at first, through manpower screw is back-outed earlier, directly back-outs through electronic in follow-up most of stage, and the user only need do the initial work of back-outing, and is time saving and energy saving equally.

Further, said semi-automatic spanner can increase the operating portion of a long handle, so that in last work that tightens or initial back-outing in the work, utilize lever principle to make the user more time saving and energy saving.

Seeing also Fig. 2 again, is that wherein a kind of concrete structure of the semi-automatic spanner of the utility model embodiment is formed sketch map, and the said semi-automatic spanner in the present embodiment comprises the power supply 1 in the foregoing description, motor 2, decelerator 3, clutch 4 and rotation axis 5.

In the present embodiment; Said clutch 4 further comprises: turning cylinder 401 and rotary axle box 402; Sheathed compression spring 403 on the said rotary axle box 402, said compression spring 403 compresses spring base 404, and said spring base 404 is pressed on spin 405 in the clutch cell body 406; Clutch output shaft 407 is installed on the said clutch cell body 406, and said clutch output shaft 407 is provided with clutch output gear 408.Wherein, said spin 405 is a steel ball, also can be iron ball or copper ball etc. in other embodiments certainly.

Further, said motor 2 links to each other with the turning cylinder of said clutch 4 through one group of planet wheel decelerator, and concrete, said motor 2 is a direct current motor, the planet tooth engagement of the straight-tooth of said direct current generator output shaft and said planetary gear.

Further, said rotation axis 5 is provided with bevel gear 501 and said clutch output gear 408 engagements.

Further, said semi-automatic spanner also comprises ratchet 6, and said ratchet 6 is set in and prevents on the said rotation axis 5 that said rotation axis 5 from rotating to negative side's method.

Further, said semi-automatic spanner also can comprise a long handle operating portion 7, and through this long handle operating portion 7, the user can carry out last work that tightens or the initial work of back-outing like a cork.

Further, also comprise switch key 8 between power supply 1 in the said semi-automatic spanner and the motor 2, the user can be controlled to be said motor 2 power supplies through this switch key 8.

Certainly, said semi-automatic spanner also can comprise housing 9.

Concrete, the operation principle of said semi-automatic spanner is:

When tire is installed; The electronic electronic switch of Push switch button 8 at first; Driving power supply rotates said motor 2 for said motor 2; Said motor 2 outputting torsions pass on the turning cylinder 401 through one group of planet wheel decelerator 3, drive said clutch 4 bodies and rotate; The power that this moment, said clutch 4 inner compression springs 403 provided is enough to make said spring base 404 said spin 405 firmly to be fixed in the spin groove of clutch cell body 406, drives said clutch cell body 406 by said spin 405 and rotates together.Said clutch cell body 406 outputs to said clutch output gear 408 through said clutch output shaft 407; Said clutch output gear 408 drives the bevel gear 501 that is set on the said rotation axis 5 and rotates, thereby drives the work that said rotation axis 5 is accomplished rotating screw.On this structure, the clutch output shaft 407 of said rotation axis 5 and said clutch 4 is vertical, and more convenient user tightens or back-out screw.

When the resistance of screw feedback arrives certain value; The spring force that said compression spring 403 provides is not enough to overcome this resistance; This moment, said spin 405 was skidded in said clutch cell body 406; The torsion of said motor 2 outputs passes less than said clutch cell body 406, at this moment, needs to continue to tighten screw by manpower.

The process of knockout screw in contrast.Promptly when the resistance of screw feedback is big; Said spin 405 is skidded; Need the user manually suitably to back-out screw, when back-outing the back resistance force diminishes to certain value, the power that said compression spring 403 provides is enough to make said spring base 404 that said spin 405 firmly is fixed in the clutch cell body 406; Drive said clutch cell body 406 by said spin 405 and rotate together, thus the purpose that screw is back-outed in realization.

Semi-automatic spanner in the utility model can automatically break away from clutch according to the resistance of the feedback of screw, avoids the damage of motor.Simultaneously, in the process that tightens and back-out of screw, most of time is to adopt electronic twisting, also be that the user is time saving and energy saving, increase spanner service life, has also satisfied the demand of user's automation.

Above disclosedly be merely the utility model preferred embodiment, can not limit the interest field of the utility model certainly with this, the equivalent variations of therefore being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims

1. semi-automatic spanner; Comprise: power supply and the motor that is electrically connected with said power supply; It is characterized in that: the output shaft of said motor is connected with one speed reducer, and the output shaft of said decelerator is connected with a clutch, and the rotation axis that the output shaft of said clutch and is used to screw screw is connected;

Wherein, be provided with in the said clutch:

2. semi-automatic spanner as claimed in claim 1 is characterized in that, said decelerator is one group of planetary gear.

3. semi-automatic spanner as claimed in claim 2 is characterized in that, said rotation axis is provided with bevel gear and the engagement of said clutch output gear, and said rotation axis is vertical each other with the output shaft of said clutch.

4. semi-automatic spanner as claimed in claim 3 is characterized in that said spin comprises any one or more in steel ball, iron ball and the copper ball.

5. semi-automatic spanner as claimed in claim 4 is characterized in that, is set in the ratchet on the said rotation axis.

6. semi-automatic spanner as claimed in claim 5 is characterized in that, said motor is a direct current motor, the planet tooth engagement of the straight-tooth of said direct current generator output shaft and said planetary gear.

7. semi-automatic spanner as claimed in claim 6 is characterized in that, also comprises a long handle operating portion.

8. semi-automatic spanner as claimed in claim 7 is characterized in that, also comprises a switch key, is used to control said power supply and supplies power to said motor.