CN2853298Y

CN2853298Y - Torque amplification wrench

Info

Publication number: CN2853298Y
Application number: CN 200520133314
Authority: CN
Inventors: 周浪平
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2007-01-03
Anticipated expiration: 2015-11-18

Abstract

Disclosed is a reinforcement spanner, comprising a top foot, a butterfly screw, a big revolution axis end, a big-size tooth frame, a mid-size tooth frame, an inner hexagonal central gear, a spring, a cap, a small-size input axis, a sleeve spindle, a ferromagnet, and an iron shot. The peripheral surface of the small-size input axis is hexagonal and closely engaged with the inner hexagon. The cap covers the sleeve spindle and is provided with an iron shot hole, a long spring groove is arranged in the middle of the iron shot hole. A half slot is arranged on the outer circumference of the sleeve spindle, the small-size input axis is connected with the big-size tooth frame, the mid-size tooth frame and the inner hexagonal central gear. The inner hexagonal central gear is engaged with the mid-size tooth frame and the mid-size tooth frame is engaged with the big-size tooth frame. A spring on the top of the in the small-size input axis is equipped in the inner hole of the big-size tooth frame, a ferromagnet is arranged on the top of the inner hole of the big-size tooth frame, and the inner hole of the mid-size tooth frame is hexagonal. The reinforcement spanner of the utility model is capable of increasing torque force and is convenient for demounting the cap nut off the automobile.

Description

A kind of reinforcement spanner

Affiliated technical field

The utility model relates to a kind of reinforcement spanner, belongs to field of tool.

Background technology

Existing instrument such as common wrench when the dismounting automotive tyre nut, are very required great effort inconvenience.

Summary of the invention

In order to overcome the deficiency of prior art structure, the utility model provides a kind of reinforcement spanner.

The technical scheme that its technical problem that solves the utility model adopts is: have by body, butterfly screw, big rotating shaft, big braces, middle braces, little braces, planetary gear, interior hexagonal centre tooth, spring, capping, little power shaft, sleeve, magnet, steel ball.The periphery of little power shaft is that the endoporus hexagon of hexagon and sleeve is tightly fixed, capping is enclosed within on the sleeve, capping is provided with steel ball hole, the steel ball hole center is provided with the wire circlip groove, there is semi-round groove in the outer garden week of sleeve, little power shaft 1 is by interior hexagonal centre tooth and little braces endoporus, the planetary gear engagement of interior hexagonal centre tooth and little braces, centre tooth and middle frame planet tooth engagement in age on the little braces, centre tooth on the middle braces and big braces planet tooth engagement, the planet tooth of braces at different levels all meshes with the body internal tooth.In having spring and be installed in, the top of little power shaft in the endoporus of braces centre tooth, when pulling out little rotating shaft, plays the power-assisted effect.There is magnet on the endoporus top of centre tooth on the middle braces, holds big rotating shaft and prevents to skid off in the use, and the centre tooth endoporus other end is interior hexagonal on the middle braces.

Pull out little power shaft, steel ball cooperates with the sleeve half slot under the wire circlip effect in the capping, hexagonal centre tooth in simultaneously the little wire circlip on the little power shaft blocks, and this little wire circlip can prevent that little power shaft from excessively pulling out, and can pass through little braces centre bore again; In the time of fast grade, little power shaft advances, and the outer-hexagonal end of little defeated axle cooperates with intracardiac hexagonal in the middle braces, and breaks away from interior hexagonal centre tooth, and torsion braces in little power shaft directly acts on rotates, and little braces is in idling conditions, is in one-level at this moment to slow down; During slow shelves, little power shaft is pulled out, and the outer-hexagonal end of little power shaft cooperates with interior hexagonal centre tooth, and with middle braces in intracardiac hexagonal disengaging, be in three grades of decelerations at this moment.

The utility model adopts the planetary gear speed-reduction rotary principle, the convertible design of torque ratio, and beneficial effect increases torsion, automotive tyre nut for convenience detach.

Description of drawings

Below in conjunction with drawings and Examples utility model is further specified.

Fig. 1 is a structural representation.

Fig. 2 is a structural representation.

The specific embodiment

Embodiment 1: as shown in Figure 1 and Figure 2, have by body 10, butterfly screw 13, big rotating shaft 15, big braces 14, middle braces 6, little braces 5, planetary gear, interior hexagonal centre tooth 4, spring 7, capping 3, little power shaft 1, sleeve 9, magnet 8, steel ball 2.The periphery of little power shaft 1 is that the endoporus hexagon of hexagon and sleeve 9 is tightly fixed, capping 3 is enclosed within on the sleeve 9, capping 3 is provided with steel ball hole 21, steel ball hole 21 centers are provided with the wire circlip groove, there is semi-round groove 20 in the outer garden week of sleeve 3, little power shaft 1 is by interior hexagonal centre tooth 4 and little braces 5 endoporus, interior hexagonal centre tooth 4 meshes with the planetary gear of little braces 5, centre tooth and middle frame 6 planet teeth engagement in age on the little braces 5, centre tooth on the middle braces 6 and big braces 14 planet teeth engagement, the planet tooth of braces at different levels all meshes with body 10 internal tooths.In there is spring 7 at the top of little power shaft 1 and is installed in the endoporus of braces 6 centre tooth, when pulling out little rotating shaft 1, play the power-assisted effect.There is magnet 8 on the endoporus top of centre tooth on the middle braces 6, holds big rotating shaft 15 and prevents to skid off in the use, and the centre tooth endoporus other end is interior hexagonal on the middle braces 6.

The microcephaly of body 10 is the spline external form, and pin 11 slip caps in top have butterfly screw 13 to be connected and fixed the position on microcephaly's spline 16 on microcephaly's spline 16, and big tupelo 15 is at microcephaly's spline 16 1 ends; Rotating the arm of force 12 can be connected with little power shaft 1.

Claims

1. reinforcement spanner, have by body, the butterfly screw, big rotating shaft, big braces, middle braces, little braces, planetary gear, interior hexagonal centre tooth, spring, capping, little power shaft, sleeve, magnet, steel ball, it is characterized in that: the periphery of little power shaft is that the endoporus hexagon of hexagon and sleeve is tightly fixed, capping is enclosed within on the sleeve, capping is provided with steel ball hole, the steel ball hole center is provided with the wire circlip groove, there is semi-round groove in the outer garden week of sleeve, little power shaft is by interior hexagonal centre tooth and little braces endoporus, the planetary gear engagement of interior hexagonal centre tooth and little braces, centre tooth and middle frame planet tooth engagement in age on the little braces, centre tooth on the middle braces and big braces planet tooth engagement, big braces, middle braces, the planet tooth of little braces and the engagement of body internal tooth, in there is spring at the top of little power shaft and is installed in the endoporus of braces centre tooth, there is magnet on the endoporus top of centre tooth on the middle braces, and the centre tooth endoporus other end is interior hexagonal on the middle braces.