CN203887776U

CN203887776U - Improved torque wrench structure

Info

Publication number: CN203887776U
Application number: CN201420240238.7U
Authority: CN
Inventors: 赖李玉兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2014-10-22
Anticipated expiration: 2024-05-12

Abstract

An improved torque wrench structure is characterized in that when a torque wrench is adjusted to the required torque value, a rotary cover is forwardly pressed in to allow a positioning column to be matched with the embedding groove of a positioning part and blocked by a protruding block, and accordingly the rotary cover cannot be rotated again, the set torque value can be maintained relatively, and excessive or insufficient force application during wrench operation is avoided.

Description

Improved torque spanner structure

Technical field

The utility model relates to a kind of improved torque spanner structure, and espespecially it can adjust the torque value of output, to avoid the switching application of force excessive, cause lock knot part or torque spanner to damage, or the application of force is not enough, causes lock knot part to be screwed, and the torque value after adjusting can be fixed and kept.

Background technology

The effect of torque spanner is to set torque value; when surpassing this setting torque value, will sound; or generation idle running; user can be known and know over default torque value; and no longer continue the application of force, use; energy protection lock knot part and torque spanner do not damage because the application of force is excessive relatively, and can really lock knot part be screwed.And general torque spanner all can drive the bolt rotary of being located at outer handle inside for the control piece rotating with one mostly, again with the axial displacement in handle outside of the slide block that is screwed with screw rod, when slide block is during in different position, can impose compressing in various degree to spring, and then reach the effect of adjusting torque value size.But, because this common torque spanner is set in torque value after required size, and cannot effectively control piece be fixed, under the External Force Actings such as vibrations when torque value still can be used because of operation or careless rotation controling piece and change easily, so, all will cannot obtain maintenance because of torque value, allow user have no basis when pulling operation, and still have the application of force excessive, cause lock knot part and torque spanner to damage, or the application of force is not enough, cause the phenomenons such as lock knot part cannot be screwed really to produce.

Summary of the invention

Main purpose of the present utility model is to provide a kind of improved torque spanner structure; the torque value of adjustment can be fixed; with protection lock knot part and torque spanner, because the application of force is excessive, do not damage, and can really lock knot part be screwed, can also not affect the normal use of torque spanner simultaneously.

For reaching above-mentioned purpose, a kind of improved torque spanner structure of the utility model, it includes: a wrench body, one outer handle, one guiding mechanism, positioning piece, one handle and a rotatable cover, wherein, this outer handle is hollow form, make this wrench body penetrate combination by the place ahead, rear can be inserted forward for this guiding mechanism, with the transmission of joining of this wrench body, this guiding mechanism has been inserted connection rod set and screw rod in a closely sealed cover, start interblock in this connection rod set and screw rod is arranged with a spring again, the transmission of joining of this connection rod set and wrench body, this is made motion block and is screwed with screw rod, it is characterized in that: this screw rod rear is extended with a rotation section, this rotation section leading portion is provided with the ditch of dodging that is scalariform, back segment vertical its has axially provided a driving hole, this keeper is two rank hollow forms, on the side on path rank, provided perforation, this keeper is set on this rotation section, those perforation can be relative with this ditch of dodging, to utilize alignment pin to pass the Bian Biyu perforation of this closely sealed cover, and be placed in this ditch of dodging, and make this keeper can be consolidated in this closely sealed cover rear, to form a block effect, this keeper rear end face lateral margin spacer ring is provided with a plurality of projections again, to make between two projections of being separated by, can form a caulking groove, this rotatable cover the place ahead convexes with a plurality of locating dowels and is concaved with a hole, allow this rotatable cover can utilize this hole and be set on this rotation section, periphery outside vertical its is axially arranged with the slip hole of a microscler shape, allow this axostylus axostyle can pass this outer handle, the driving hole of slip hole and rotation section, and make this rotatable cover energy pivot be placed between this rotation section and outer handle.

Effect of the present utility model is: (one), it is set in torque value after required size, can effectively rotatable cover be fixed, it cannot be rotated again, relatively when pulling operation, just do not have because under external force vibrations or careless rotation the shortcoming that causes torque value to change again; (2), its rotatable cover can be fixed, and allow the torque value setting can obtain maintenance, therefore can pull when operation user, provide a foundation accurately, relatively just excessive without the application of force, cause lock knot part and torque spanner to damage, or the application of force is not enough, cause the phenomenons such as lock knot part cannot be screwed really.

Accompanying drawing explanation

Fig. 1 is three-dimensional combination figure of the present utility model.

Fig. 2 is three-dimensional exploded view of the present utility model.

Fig. 3 is transverse combination profile of the present utility model.

Fig. 4 is the state diagram that the utility model drives bolt rotary.

Fig. 5 is that the utility model fixes the state diagram that cannot be rotated again.

The specific embodiment

Please first by Fig. 1, arrange in pairs or groups and see it shown in Fig. 2 and Fig. 3, it includes: a wrench body 10, one outer handle 20, one guiding mechanism 30, positioning piece 40, one handle 50 and a rotatable cover 60, wherein, these wrench body 10 one end are ratchet drive mechanism 11, in order to socket lock knot part, this outer handle 20 is hollow form, this wrench body 10 can be penetrated by the place ahead, recycling latch coordinates C type to buckle and be incorporated on this outer handle 20, rear can be inserted forward for this guiding mechanism 30, with the transmission of joining of this wrench body 10, this guiding mechanism 30 has been inserted connection rod set 32 and screw rod 34 in a closely sealed cover 31, 35 of the motion blocks of doing in this connection rod set 32 and screw rod 34 are arranged with a spring 33 again, the transmission of joining of this connection rod set 32 and wrench body 10, this is made motion block 35 and is screwed with screw rod 34, when this screw rod 34 rotates, can drive this to do motion block 35 and then axial displacements, to utilize this, do the change of motion block 35 positions, this spring 33 is imposed to compressing in various degree, and then adjustment torque value, these screw rod 34 rears are extended with a rotation section 341 again, these rotation section 341 leading portions are provided with the ditch 342 of dodging that is scalariform, back segment is equipped with two road stopper slots 343, and vertically it has axially provided a driving hole 344, this keeper 40 is two rank hollow forms, and its hollow bulb is to be greater than this rotation section 341, on the side on path rank, provided perforation 41, when this keeper 40 is set on this rotation section 341, those perforation 41 can be relative with this ditch 342 of dodging, to utilize alignment pin to pass the Bian Biyu perforation 41 of this closely sealed cover 31, and be placed in this ditch 342 of dodging, and make this keeper 40 can be consolidated in this closely sealed cover 31 rears, to form a block effect, these keeper 40 rear end face lateral margin spacer rings are provided with a plurality of projection 42 again, to make 42 of two projections of being separated by can form a caulking groove 43, handle 50 is sheathed on outer handle 20 rears, and when pulling, can provide gripping, to facilitate the application of force, these rotatable cover 60 the place aheads convex with a plurality of locating dowels 601 and are concaved with a hole 602, allow this rotatable cover 60 can utilize this hole 602 and be set on this rotation section 341, these rotatable cover 60 periphery outsides vertical its are axially respectively equipped with the slip hole 604 of a locating hole 603 and a microscler shape, interior confession one positioning bead 61 of this locating hole 603 and an elastomer 62 sequentially put into, with an axostylus axostyle 63, pass this outer handle 20 again, the driving hole 344 of slip hole 604 and rotation section 341, and make this rotatable cover 60 can pivots be placed on 20 of this rotation section 341 and outer handles, and utilize the sealing of this outer handle 20, and allow, this positioning bead 61 and elastomer 62 are unexpected to be ejected outward, and these rotatable cover 60 back segment outer peripheral edges spacer rings are provided with a plurality of fixture blocks 64, these handle 50 rear end periphery spacer rings are provided with a plurality of draw-in grooves 65, when this rotatable cover 60 is pressed into forward, these fixture block 64 correspondences are snapped into this draw-in groove 65.

By above-mentioned structure, composition design, hereby with regard to use start situation of the present utility model, be described as follows:

By above-mentioned structure, when wish is adjusted the torque value of torque spanner, pull this rotatable cover 60 backward, please see as shown in Figure 4 it simultaneously, the fixture block 64 of this rotatable cover 60 is departed from mutually with the draw-in groove 65 of handle 50 rear ends, and allow this rotatable cover 60 can utilize dodging of this slip hole 604, and displacement backward smoothly, this positioning bead 61 will up compress this elastomer 62 simultaneously, and can take advantage of a situation, snap into location in the stopper slot 343 at rear, now, will be because this rotatable cover 60 utilizes this axostylus axostyle 63 interlock that combines with rotation section 341, and can when this rotatable cover 60 rotates, drive this screw rod 34, and drive this to do motion block 35 relative displacements, to utilize this, do the change of motion block 35 positions, this spring 33 is imposed to compressing in various degree, and then reach the effect of adjusting torque value size, again when torque spanner is adjusted to after required torque value, again this rotatable cover 60 is pressed into forward, please see as shown in Figure 5 it simultaneously, the fixture block 64 of this rotatable cover 60 is engaged once again mutually with the draw-in groove 65 of handle 50 rear ends, and allow this locating dowel 601 can cater to the caulking groove 43 of this keeper 40, and be subject to this projection 42 block cards, now, can be because of this closely sealed cover 31, 60 of keeper 40 and rotatable covers form a state interfixing, and allow this rotatable cover 60 be rotated again, the torque value setting can obtain maintenance relatively, to avoid the having thing that the application of force is excessive or not enough to occur when operation is pulled, while being separately pressed into because of this rotatable cover 60, its this positioning bead 61 can be crossed the stopper slot 343 at rear, and snap in the stopper slot 343 in the place ahead, therefore can utilize this to snap in location, prevent the displacement backward arbitrarily of this rotatable cover 60, and can be rotated again.

The structure of borrowing above-mentioned specific embodiment, can obtain following benefit:

(1) it is set in torque value after required size, can effectively rotatable cover 60 be fixed, and it cannot be rotated again, relatively, when pulling operation, does not just have because under external force vibrations or careless rotation the shortcoming that causes torque value to change again; (2) its rotatable cover 60 can be fixed, and allow the torque value setting can obtain maintenance, therefore can pull when operation user, provide a foundation accurately, relatively just excessive without the application of force, cause lock knot part and torque spanner to damage, or the application of force is not enough, cause the phenomenons such as lock knot part cannot be screwed really.

In sum, the utility model really can effectively solve common structure and lack plainly, and can be understood enforcement easily by general knowledge person in affiliated technical field, only the above, be only this novel preferred embodiment, when can not with the scope of this novel enforcement of restriction; The equalization of generally doing according to this novel claim changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. an improved torque spanner structure, it includes: a wrench body, one outer handle, one guiding mechanism, positioning piece, one handle and a rotatable cover, wherein, this outer handle is hollow form, make this wrench body penetrate combination by the place ahead, rear can be inserted forward for this guiding mechanism, with the transmission of joining of this wrench body, this guiding mechanism has been inserted connection rod set and screw rod in a closely sealed cover, start interblock in this connection rod set and screw rod is arranged with a spring again, the transmission of joining of this connection rod set and wrench body, this is made motion block and is screwed with screw rod, it is characterized in that: this screw rod rear is extended with a rotation section, this rotation section leading portion is provided with the ditch of dodging that is scalariform, back segment vertical its has axially provided a driving hole, this keeper is two rank hollow forms, on the side on path rank, provided perforation, this keeper is set on this rotation section, those perforation can be relative with this ditch of dodging, to utilize alignment pin to pass the Bian Biyu perforation of this closely sealed cover, and be placed in this ditch of dodging, and make this keeper can be consolidated in this closely sealed cover rear, to form a block effect, this keeper rear end face lateral margin spacer ring is provided with a plurality of projections again, to make between two projections of being separated by, can form a caulking groove, this rotatable cover the place ahead convexes with a plurality of locating dowels and is concaved with a hole, allow this rotatable cover can utilize this hole and be set on this rotation section, periphery outside vertical its is axially arranged with the slip hole of a microscler shape, allow this axostylus axostyle can pass this outer handle, the driving hole of slip hole and rotation section, and make this rotatable cover energy pivot be placed between this rotation section and outer handle.

2. improved torque spanner structure as claimed in claim 1, is characterized in that: wherein, be equipped with two road stopper slots on the back segment of this rotation section, this rotatable cover is provided with a locating hole, allows this positioning bead and elasticity physical efficiency sequentially be placed in this locating hole.

3. improved torque spanner structure as claimed in claim 1, it is characterized in that: wherein, this rotatable cover back segment outer peripheral edges spacer ring is provided with a plurality of fixture blocks, and this handle rear end periphery spacer ring is provided with a plurality of draw-in grooves, when this rotatable cover is pressed into forward, this fixture block correspondence is snapped into this draw-in groove.