CN202753092U

CN202753092U - Adjustment structure for torque wrench

Info

Publication number: CN202753092U
Application number: CN 201220365441
Authority: CN
Inventors: 林添龙
Original assignee: TORQUE-TECH PRECISION Co Ltd
Current assignee: TORQUE-TECH PRECISION Co Ltd
Priority date: 2012-07-26
Filing date: 2012-07-26
Publication date: 2013-02-27
Anticipated expiration: 2022-07-26

Abstract

The utility model relates to an adjustment structure for a torque wrench. The adjustment structure comprises an adjustment bolt, and a first nut, a second nut, a connection ring and a third nut are sequentially arranged on the adjustment bolt. One side of the second nut is concavely provided with a polygonal groove, and the connection ring is convexly provided with a polygonal convex ring which is penetratingly arranged and limited in the polygonal groove. Compared with an existing torque wrench provided with the connection ring having a perforated hole for containing the second nut, the adjustment structure for the torque wrench has the advantages that the wall between the inner wall and the outer wall of the connection ring is thicker, so that excellent structural strength can be achieved, and the defect of proneness to breakage of the connection ring of the existing torque wrench can be overcome.

Description

The adjustment structure of torque spanner

Technical field

The utility model is relevant with a kind of adjustment structure of torque spanner.

Background technology

See also Figure 1 and Figure 2, cutaway view and the local amplification view for a kind of known torque spanner, this torque spanner 100 is to have an action bars 10, and this action bars 10 is comprised of an inner tube 11 and an outer tube 12 sheathed institutes, the outer wall of this inner tube 11 also is provided with a plurality of stopper slots 111 vertically simultaneously, the outer wall of this outer tube 12 then is equipped with a perforation 121 that is connected with this stopper slot 111, and convex with a stop section 122 in contiguous these perforation 121 places, in addition, one end of this inner tube 11 also is pivoted with a driving head 20, this driving head 20 is to be extended with an adjutage 21 in this inner tube 11, again, also be provided with one in this action bars 10 and adjust structure 30, and this adjustment structure 30 is to have a supporting member 31 that is resisted against this adjutage 21, the in addition side of these supporting member 31 relative these adjutages 21 is to be provided with an elastic component 32, the in addition side of these elastic component 32 relative these supporting members 31 is to be provided with one to adjust bolt 33, the head 331 of this adjustment bolt 33 is to be resisted against this elastic component 32, the tail end 332 of this adjustment bolt 33 then protrusion is positioned at outside this inner tube 11, go back simultaneously spiral shell on this adjustment bolt 33 and be provided with one first nut 34, and this first nut 34 is the inwalls that are fixedly arranged on this inner tube 11, more sequentially be provided with one second nut 35 by this head 331 towards these tail end 332 directions on this adjustment bolt 33 in addition, one connecting ring 36 and one the 3rd nut 37, wherein, this connecting ring 36 is to be located in 37 on this second nut 35 and the 3rd nut, and further be fixed in the inwall of this outer tube 12, in addition, also be provided with a latch-up structure 40 on this action bars 10, this latch-up structure 40 is to have a steel ball 41 that is placed in this perforation 121, an and sliding sleeve 42 that is slidedly arranged on this outer tube 12, and the inwall of this sliding sleeve 42 is to be provided with a recess 421, this recess 421 is to be connected with a protuberance 422,122 of the stop sections of this protuberance 422 and this outer tube 12 are to be provided with a spring 43, thus, allow the user can pass through to rotate this outer tube 12, drive the moving position of adjusting of these adjustment bolt 33 relative these the first nut 34 spiral shells, be pressed against the pressure of this supporting member 31 to adjust this elastic component 32, and then reach the purpose of the torque value of adjusting this torque spanner 100.

Yet, affect this adjustment bolt 33 to rotate in order to allow this connecting ring 35 can drive this second nut 34, one side center position of this connecting ring 36 must along this adjust bolt 33 axially be equipped with one the perforation 361, with accommodating this second nut 35, cause comparatively weakness of the inwall of this connecting ring 36 and the wall thickness d1 between outer wall, structural strength is lower, so that this known torque spanner 100 is after long period of operation, these connecting ring 36 easy fractures, and can't carry out the adjustment of torque value, durability is denounced by the user quite, particularly in order to transmit power, this perforation 361 normally forms shape that should the second nut 35, just can insert in this perforation 361 so that this second nut 35 must turn to special angle, and be difficult for this second nut 35 is incorporated into this connecting ring 36, be with, this case creator thinks that this known torque spanner 100 has necessity of further improvement in fact after observing above-mentioned shortcoming, and with generation of the present utility model is arranged.

The utility model content

Main purpose of the present utility model is that a kind of adjustment structure of torque spanner is being provided, its connecting ring is to have thicker wall thickness, and have better structural strength, can improve the shortcoming of the easy fracture of connecting ring of known torque wrench, significantly to promote the durability of this torque wrench.

For reaching above-mentioned purpose, the adjustment structure of torque spanner provided by the utility model, this torque spanner is to have an action bars, and this action bars is comprised of an inner tube and the sheathed institute of an outer tube, an end of this inner tube also is pivoted with a driving head simultaneously, this driving head is to be extended with an adjutage in this inner tube, this adjustment structure then has a supporting member that is resisted against this adjutage, and this supporting member relatively in addition side of this adjutage is to be provided with an elastic component, this elastic component relatively in addition side of this supporting member is to be provided with one to adjust bolt, the head of this adjustment bolt is to be resisted against this elastic component, the tail end of this adjustment bolt then protrudes and is positioned at outside this inner tube, in addition, go back spiral shell on this adjustment bolt and be provided with one first nut, and this first nut is the inwall that is fixedly arranged on this inner tube, again, also sequentially be provided with one second nut by this head towards this tail end direction on this adjustment bolt, one connecting ring and one the 3rd nut, wherein, this connecting ring is to be located between this second nut and the 3rd nut, and further be fixed in the inwall of this outer tube, and this second a nut relatively side center position of this connecting ring is axially to be concaved with a polygonal groove along this adjustment bolt, a this connecting ring relatively side center position of this second nut then convexes with a polygonal bulge loop, and this polygonal bulge loop is to wear to be limited in this polygonal groove.

As preferred version, wherein, this polygonal groove is to be 12 jiaos of star-like grooves, and this polygonal bulge loop then is a positive hexangle type bulge loop.

The beneficial effects of the utility model are: the adjustment structure of this torque spanner, because this second a nut relatively side center position of this connecting ring is axially to be concaved with this polygonal groove along this adjustment bolt, a this connecting ring relatively side center position of this second nut then convexes with this polygonal bulge loop, and this polygonal bulge loop is to wear to be limited in this polygonal groove, this connecting ring is connected with this second nut, therefore on connecting ring, wear this perforation with known torque wrench, mode with accommodating this second nut is compared, under the identical condition of the internal diameter of this outer tube, the inwall of connecting ring of the present utility model and the wall thickness between outer wall can be comparatively abundant, and can have better structural strength, can improve the shortcoming of the easy fracture of connecting ring of known torque wrench, significantly to promote the durability of this torque wrench.

Description of drawings

For making the auditor to technical characterictic of the present utility model and the effect reached further understanding and understanding be arranged, be described in detail as follows below in conjunction with embodiment and accompanying drawing, wherein:

Fig. 1 is a kind of cutaway view of known torque spanner.

Fig. 2 is a kind of local amplification view of known torque spanner.

Fig. 3 is the cutaway view of preferred embodiment of the present utility model.

Fig. 4 is the local amplification view of preferred embodiment of the present utility model.

Fig. 5 is the cutaway view at 5-5 face line place among Fig. 4 of the present utility model.

Fig. 6 is the action schematic diagram of preferred embodiment of the present utility model.

The specific embodiment

See also Fig. 3, Fig. 4 and shown in Figure 5, it is the cutaway view for preferred embodiment of the present utility model, the cutaway view at 5-5 face line place among local amplification view and Fig. 4, it is to disclose the adjustment structure 50 that a kind of torque spanner is arranged, and this adjustment structure 50 is to be arranged at a torque spanner 100, this torque spanner 100 is to have an action bars 10, one driving head 20 and a latch-up structure 40, this action bars 10, this driving head 20 has been disclosed in aforementioned prior art with the structure of this latch-up structure 40, therefore repeat no more, simultaneously for convenience of description, this action bars 10, this driving head 20 is labels of continuing to use prior art with the label of this latch-up structure 40, wherein, this adjustment structure 50 is to be located in this action bars 10, and has a supporting member 51 that is resisted against this adjutage 11, in addition, the in addition side of these supporting member 51 relative these adjutages 11 is to be provided with an elastic component 52, and the in addition side of these elastic component 52 relative these supporting members 51 is to be provided with one to adjust bolt 53, the head 531 of this adjustment bolt 53 is to be resisted against this elastic component 52, the tail end 532 of this adjustment bolt 53 then protrusion is positioned at outside this inner tube 11, again, go back spiral shell on this adjustment bolt 52 and be provided with one first nut 54, and this first nut 54 is the inwalls that are fixedly arranged on this inner tube 11, also sequentially be provided with one second nut 55 by this head 531 towards these tail end 532 directions on this adjustment bolt 53 simultaneously, one connecting ring 56 and one the 3rd nut 57, wherein, this connecting ring 56 is to be located in 57 on this second nut 55 and the 3rd nut, and further be fixed in the inwall of this outer tube 12, and a side center position of these the second nut 55 relative these connecting rings 56 is axially to be concaved with a polygonal groove 551 along this adjustment bolt 53, one side center position of these connecting ring 56 relative these the second nuts 55 then convexes with a polygonal bulge loop 561, this polygonal bulge loop 561 is to wear to be limited in this polygonal groove 551, in the present embodiment, this polygonal groove 551 is to be 12 jiaos of star-like grooves, and this polygonal bulge loop 561 then is a positive hexangle type bulge loop.

Please consult simultaneously more shown in Figure 6, it is the action schematic diagram for preferred embodiment of the present utility model, when user's wish is adjusted the torque value of this torque spanner 100, this moment, the user was as long as adjust tail end 532 directions slip of bolt 53 with the sliding sleeve 42 of this latch-up structure 40 towards this first, make this steel ball 41 have the ability that moves toward this recess 421 and can break away from this stopper slot 111, the just outer tube 12 of rotatable this action bars 10 afterwards, this outer tube 12 can be rotated relative to this inner tube 11, this moment is because this first nut 54 is the inwalls that are fixedly arranged on this inner tube 11, this connecting ring 56 then is fixedly arranged on the inwall of this outer tube 12, and be located in 57 on this second nut 55 and the 3rd nut, so this outer tube 12 will drive this connecting ring 56 and rotate, make this this second nut 55 of connecting ring 56 interlocks affect this adjustment bolt 53 to rotate together, allow the relatively moving position of adjusting of these the first nut 54 spiral shells of this adjustment bolt 53, be pressed against the pressure of this supporting member 51 to adjust this elastic component 52, the head 531 that for example in the present embodiment is this adjustment bolt 53 of adjustment is close towards these supporting member 51 directions, can be for this elastic component 52 of compression, be resisted against the pressure of this supporting member 51 to increase this elastic component 52, and then can strengthen the torque value of this torque wrench 100.

It is worth mentioning that, because a side center position of these the second nut 55 relative these connecting rings 56 is axially to be concaved with this polygonal groove 551 along this adjustment bolt 53, one side center position of these connecting ring 56 relative these the second nuts 55 then convexes with this polygonal bulge loop 561, and this polygonal bulge loop 561 is to wear to be limited in this polygonal groove 551, this connecting ring 56 is connected with this second nut 55, therefore on this connecting ring 36, be equipped with this perforation 361 with known torque wrench, mode with accommodating this second nut 35 is compared, under the identical condition of the internal diameter of this outer tube 12, the inwall of connecting ring 56 of the present utility model and the wall thickness d2 between outer wall can be comparatively abundant, that is the wall thickness d2 of this connecting ring 56 can be greater than the wall thickness d1 of known connecting ring 36, and can have better structural strength, can improve the shortcoming of the connecting ring 36 easy fractures of known torque wrench, significantly to promote the durability of this torque wrench 100.

What be worth carrying is again, because the polygonal groove 551 of this second nut 55 is to be 12 jiaos of star-like grooves, the polygonal bulge loop 561 of this connecting ring 56 then is a positive hexangle type bulge loop, therefore these connecting ring 56 every rotations are 30 °, this polygonal bulge loop 561 namely once chance can penetrate this polygonal groove 551, so that this polygonal bulge loop 561 can comparatively be easy to be arranged in this polygonal bulge loop 561, and can effectively improve the shortcoming that known torque spanner is difficult for this second nut 35 is incorporated into this connecting ring 36.

Claims

1. the adjustment structure of a torque spanner, this torque spanner has an action bars, and this action bars is comprised of an inner tube and the sheathed institute of an outer tube, an end of this inner tube also is pivoted with a driving head simultaneously, this driving head is extended with an adjutage in this inner tube, this adjustment structure then has a supporting member that is resisted against this adjutage, and this supporting member relatively in addition side of this adjutage is provided with an elastic component, this elastic component relatively in addition side of this supporting member is provided with an adjustment bolt, the head of this adjustment bolt is resisted against this elastic component, the tail end of this adjustment bolt then protrudes and is positioned at outside this inner tube, in addition, go back spiral shell on this adjustment bolt and be provided with one first nut, and this first nut is fixed in the inwall of this inner tube, again, also sequentially be provided with one second nut by this head towards this tail end direction on this adjustment bolt, one connecting ring and one the 3rd nut, wherein, this connecting ring is located between this second nut and the 3rd nut, and further be fixed in the inwall of this outer tube, its main being characterised in that:

This second a nut relatively side center position of this connecting ring axially is concaved with a polygonal groove along this adjustment bolt, a this connecting ring relatively side center position of this second nut then convexes with a polygonal bulge loop, and this polygonal bulge loop wears and is limited in this polygonal groove.

2. according to the adjustment structure of torque spanner claimed in claim 1, it is characterized in that, wherein, this polygonal groove is 12 jiaos of star-like grooves, and this polygonal bulge loop then is a positive hexangle type bulge loop.