CN201483419U

CN201483419U - Torque wrench

Info

Publication number: CN201483419U
Application number: CN 200920141104
Authority: CN
Inventors: 钟忠
Original assignee: Guilin Woodpecker Medical Instruments Co Ltd
Current assignee: Guilin Woodpecker Medical Instruments Co Ltd
Priority date: 2009-07-23
Filing date: 2009-07-23
Publication date: 2010-05-26
Anticipated expiration: 2019-07-23

Abstract

The utility model relates to the field of manual tools, in particular to a torque wrench used for mounting and dismounting working tips. The torque wrench mainly consists of a shaft seat, a shaft sleeve, a fixed ring cover and a C-shaped buckle ring, wherein the shaft seat and the shaft sleeve are sheathed, a wrench square jar or a waist round hole is formed along the axial line of the shaft seat, a ratchet wheel is sheathed on the shaft seat, rotating surfaces of the shaft seat and the shaft sleeve are matched for transmitting the torque through an elastic sheet and the ratchet wheel, the fixed ring cover is sheathed into the shaft seat to press on the elastic sheet and the ratchet wheel, the C-shaped buckle ring is buckled into a recessed ring sleeve formed on the shaft seat for fixing the assembly, at least one lug boss is arranged on the inner circumferential surface of the shaft sleeve, a groove is formed on the bottom of the elastic sheet corresponding to the lug boss, the groove is clamped and connected on the lug boss for fixing the elastic sheet on the inner circumferential surface of the shaft seat, and a sheathing connection surface of the ratchet wheel and the shaft seat is in a shape of a non-cylindrical surface. Compared with the prior art, the torque wrench of the utility model has the advantages of simple structure, convenient assembly and beautiful appearance.

Description

Torque wrench

Technical field:

The utility model relates to the hand-operated tools field, is specifically related to be used for the limit power wrench of loading and unloading point.

Background technology:

Clean one's teeth, cavity preparation work point is installed in by screw thread and cleans one's teeth, on the screw thread of cavity preparation work crack tip, by hygienic requirements, clean one's teeth, cavity preparation work point loads and unloads without grasped, and can only be by instrument such as spanner.

At present existingly cooperate the torque wrench of driving torque by the shell fragment ratchet, they generally are that ratchet is fixed, and are fixed with one with the spanner axle sleeve, and shell fragment is put into and pushed down behind the ratchet fixingly with cover plate again, but the assembling of this structure is complicated.And this class torque wrench adopts plastic production more, and service life is shorter.

Summary of the invention:

The technical problems to be solved in the utility model provides a kind of limit power wrench that is used for the loading and unloading point easy to assembly, simple in structure.

The technical solution of the utility model is as follows:

Torque wrench, main axle bed and axle sleeve by suit, fixedly ring cowling and C type clasp constitute, axis along axle bed offers spanner square opening or oval hole, ratchet sleeve is on axle bed, cooperate driving torque with shell fragment and ratchet between the plane of rotation of axle bed and axle sleeve, fixedly ring cowling is inserted in axle bed and pushes down shell fragment and ratchet, C type clasp buckles into the interior fixedly said modules of concave ring groove on the axle bed, be with the difference of prior art: the inner peripheral surface of axle sleeve is provided with at least one boss, the corresponding groove that has in shell fragment bottom with boss, groove are connected on the boss and shell fragment are fixed in the axle bed inner peripheral surface; The socket face of described ratchet and axle bed is non-cylindrical shape.

The socket face of ratchet and axle bed is designed to non-cylindrical shape, is for preventing relatively rotating between ratchet and axle bed, makes shell fragment drive ratchet and axle bed rotates simultaneously, tightens with the screw-in of realization work point.Described non-cylindrical shape can be that cylindrical part cylinder is made the plane that is parallel to the cylinder axis core, and perhaps the socket face with both is designed to profile of tooth contact-making surface etc.

For shell fragment better is fixed on the inner peripheral surface of axle sleeve, preferred design has three boss, and is uniformly distributed on the axle bed inner peripheral surface, and each boss is identical with the distance of axle bed bottom surface.

Above-mentioned torque wrench, its each assembly is all made with metal material.

Compared with prior art, originally novel torque wrench is simple and reasonable for structure, easy to assembly, and good looking appearance adopts metal material to make, and is more durable, can also autoclave sterilization.

Description of drawings:

Fig. 1: the package assembly schematic diagram of a kind of embodiment of the utility model;

Fig. 2: be the vertical view of embodiment shown in Figure 1;

Fig. 3: be the vertical view of embodiment bottom bracket axle shown in Figure 1.

The accompanying drawing sign:

1, axle sleeve; 101, boss; 2, axle bed; 201 concave ring grooves; 3, ratchet; 301, ratchet; 4, shell fragment; 401, card article; 402, groove; 5 fixing ring cowlings; 6, C type latch closure; 7, spanner square opening or oval hole.

The specific embodiment:

The utility model torque wrench is by axle bed 2, axle sleeve 1, fixedly ring cowling 5 and C type clasp 6 constitute, its mounting structure as shown in Figure 1, wherein

Axle sleeve 1 is a convenient cylinder dominated by hand, is being evenly distributed with three boss 101 near on the inner peripheral surface of axle sleeve 1 bottom end face, and each boss 101 is identical with the distance of axle bed 2 bottom surfaces;

Axle bed 2 is four layers of cylinder table scalariform, be respectively axle bed 2 and axle sleeve 1, ratchet 3 and the fixing contact-making surface of ring cowling 5, more up the radius of cylinder is then more little, wherein corresponding with ratchet 3 inner peripheral surfaces with the contact-making surface of ratchet 3, be close to retainer ring lid 5 on the axle bed 2 and on the contact-making surface of axle bed 2, also offer concave ring groove 201; Axis along axle bed 2 offers spanner square opening 7;

Shell fragment 4 is circular, bore is corresponding in outer bore and the axle sleeve 1, evenly be provided with strip card article 401 on the inner circumferential surface, card article 401 is oblique towards shell fragment 4 inner ring settings, each card article 401 be oriented same direction of rotation, on the bottom face of shell fragment 4, have and axle sleeve 1 inner peripheral surface convex platform 101 corresponding grooves 402;

Ratchet 3, be evenly distributed with ratchet 301 on its outer peripheral face, corresponding with card article 401 on the shell fragment 4, inner circumferential surface is a notched arc cylinder, be that the barrel portion cylinder is the plane that is parallel to the cylinder axis core, and the distance in this plane separation center of circle is greater than interior all radius of circles of fixing ring cowling 5 and less than all radius of a circles in the ratchet 3, is ratchet 3 and the contact-making surface of axle bed 2;

Fixedly ring cowling 5 is the annular laminated structure;

More than each assembly all make with metal material.

During assembling, shell fragment 4 is put into axle sleeve 1, groove on it 402 is snapped on the boss 101 of axle sleeve 1 inner peripheral surface, then ratchet 3 being adjusted the position cover according to the direction of card article 401 on the shell fragment 4 is stuck on the axle bed 2, the axle bed 2 that will be with ratchet 3 is again packed into from axle sleeve 1 bottom, make ratchet 3 and shell fragment 4 engagements, this moment more fixedly ring cowling 5 put into axle bed 2 from axle sleeve 1 top and push down shell fragment 4 and ratchet 3, at last C type clasp 6 is buckled in the concave ring groove 201 on the axle bed 2 with fixing said modules.Torque wrench after assembling as shown in Figure 2.

During concrete work, with the backhand that the work point is entangled in the wrench position square opening or the oval hole 7 of axle bed 2, rotary sleeve 1, shell fragment 4 passes to ratchet 3 with the moment of torsion of axle sleeve 1, axle bed 2 and ratchet 3 relative fixed, so axle bed 2 is followed ratchet 3 and is rotated the screw-in installation of realization work point synchronously; When work after point is in place, its resistance is greater than moment of torsion, relative skidding between axle bed 2 and the axle sleeve 1, the unidirectional rotation of realization torque wrench.

Claims

1. torque wrench, main axle bed (2) and axle sleeve (1) by suit, fixedly ring cowling (5) and C type clasp (6) constitute, axis along axle bed (2) offers spanner square opening or oval hole (7), ratchet (3) is enclosed within on the axle bed (2), cooperate driving torque with shell fragment 4 and ratchet (3) between the plane of rotation of axle bed (2) and axle sleeve (1), fixedly ring cowling (5) is inserted in axle bed (2) and pushes down shell fragment (4) and ratchet (3), C type clasp (6) buckles into the interior fixedly said modules of concave ring groove (201) on the axle bed (2), it is characterized in that: the inner peripheral surface of axle sleeve (1) is provided with at least one boss (101), the corresponding groove (402) that bottom shell fragment (4), has with boss (101), groove (402) is connected to boss (101) and upward shell fragment (4) is fixed in axle bed (2) inner peripheral surface; Described ratchet (3) is non-cylindrical shape with the socket face of axle bed (2).

2. torque wrench according to claim 1 is characterized in that: described boss (101) is three, be uniformly distributed on axle bed (2) inner peripheral surface, and each boss (101) is identical with the distance of axle bed (2) bottom surface.

3. torque wrench according to claim 1 and 2 is characterized in that: each assembly of torque wrench is made with metal material.