CN110732995A

CN110732995A - Locking type torque wrench with prompt

Info

Publication number: CN110732995A
Application number: CN201810791288.7A
Authority: CN
Inventors: 郭文进
Original assignee: Jiaxing Precision Co Ltd
Current assignee: Jiaxing Precision Co Ltd
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2020-01-31
Anticipated expiration: 2038-07-18
Also published as: CN110732995B

Abstract

The locking torque wrench with prompt function includes main rod, handle, rollers, rotating ring and pressing part, the main rod is inserted into the handle and can rotate and stretch relatively to the handle to regulate the torque of the driver, the rotating ring is sleeved outside the rollers on the extending pipe and can rotate relatively to the extending pipe to locking position and releasing position, the pressing part has assembling parts capable of being positioned separately on two sides of the extending pipe and normally buckled with end of the roller, when the roller is raised, the roller is pressed to the main rod by the pre-force generated by pressing part and pressed down by the pre-force to sink instantaneously to form the section-falling feeling when the handle and the main rod rotate relatively.

Description

Locking type torque wrench with prompt

Technical Field

The invention relates to torque wrenches, in particular to locking type torque wrenches with prompts.

Background

As shown in taiwan patent No. M515937, a locking ring structure of torque wrenches is disclosed, in which a body is formed by sleeving an outer tube around an inner tube, the outer tube has two positioning members and a limiting member, and locking rings are sleeved around the outer tube, the locking ring has inner locking rings and outer locking rings, the inner locking rings have avoiding grooves corresponding to each positioning member, the inner locking rings have limiting grooves corresponding to the limiting members, two limiting members are disposed in the limiting grooves, and when the locking ring rotates relative to the body, the limiting members can be selectively engaged with any limiting members.

The torque wrench is usually provided with a scale mark corresponding to the torque value on the outer tube, so that when a user adjusts the torque, the user can visually know the magnitude of the currently adjusted torque. However, although the scale marks are used as the basis for torque adjustment, when the marked scale marks are only visually confirmed, the actual torque value may have a significant error from the visually recognized torque value, which causes a problem of inaccuracy in adjusting the torque, especially when the scale marks become blurred due to wear, and the inaccuracy in adjusting the torque value by the user becomes more serious.

Disclosure of Invention

In order to solve the above problems, the present invention provides locking type torque wrench with indication, so as to form a section sense indication when the grip and the main body are relatively rotated, and accordingly adjust the required torque value.

The invention provides a locking type torque wrench with indication according to an embodiment of the present invention, comprising a main rod body being an elongated rod and having th end and second end, the main rod body having a 5 driving head at th end, the main rod body having a plurality of limiting grooves at an outer periphery adjacent to the second end, the plurality of limiting grooves being annularly arranged and spaced apart, a rod wall of the main rod body between two adjacent limiting grooves, a grip having a extending tube at end, the main rod body passing through the extending tube at the second end into the grip, the main rod body being rotatable and retractable relative to the grip to adjust a torque force of the driving head, wherein the extending tube has a plurality of pressing holes, each pressing hole being respectively aligned with each limiting groove along with relative rotation of the grip and the main rod body, a plurality of rollers being 469, being disposed in each passing hole, each pressing ring being capable of being locked with the roller and locked by the roller pressing ring at least one of the roller when the roller is pressed against the main rod body by the rotating groove, and pressed against the roller pressing ring by the roller pressing ring, and pressed against the roller pressing ring, the roller pressing ring is pressed against the roller pressing ring by the roller pressing ring, the roller pressing ring pressing against the main rod body, the roller pressing ring pressing against the main rod body at the main rod pressing ring.

In of these embodiments, the abutment is a snap ring.

Of these embodiments, the two aforementioned mating portions are located at opposite ends of the buckle and are -shaped integrally with the buckle.

In embodiments, each connecting portion is formed by bending the buckle at two different ends in opposite directions to form an inverted hook shape.

In embodiments, grooves are respectively arranged on two sides of the extension tube corresponding to each group of connection parts, blocking surfaces are arranged in each groove, the facing surface of each blocking surface is opposite to the roller buckled by the buckle ring, and when the buckle ring is buckled on the buckled part normally, each hook-shaped group of connection parts is abutted against the blocking surface in the corresponding groove to be positioned.

In embodiments, the buckled part is located at the end of the roller and has groove part, and the buckle buckles the buckled roller normally in the groove part.

In of these embodiments, the roller in which the groove is located is recessed annularly.

In embodiments, the shaft hole has a large diameter section and a small diameter section, the large diameter section has a larger diameter than the small diameter section, the evasion grooves of the rotating ring are provided on the inner periphery of the small diameter section, and the retaining ring is in an arch shape and is located on the large diameter section.

In of these embodiments, the retaining ring extends along the outer circumference of the extension tube for a range greater than -half of the extension tube circumference.

In embodiments, the plurality of limiting grooves are long and extend along the length direction of the main rod body, and each through hole is long and has the same length direction as the plurality of limiting grooves.

Therefore, when the user adjusts the torque force value of the torque wrench, the section sense formed by instant sinking of the roller pressed by the pressing piece when the roller meets the limiting groove is used as a prompt, so that the user can know that the current scale is indeed aligned with the corresponding torque force value, and the effect of accurately adjusting the torque force value can be achieved.

It is obvious from the above description that the present invention has the advantages that when the roller (in the above embodiment, the roller 3) is lifted from the limit groove 14 during the relative rotation of the grip 2 and the main rod 1, the roller is pressed against the main rod 1 by the pre-force generated by the pressing member (the snap ring 6) and is pressed down by the pre-force when encountering the limit groove 14 again, so as to sink down to the limit groove 14 instantly, thereby forming a section sense during the relative rotation of the grip 2 and the main rod 1, and even if the scale (such as the scale 231) on the torque wrench is blurred due to wear, the operator can still know that the torque value is actually located at the desired torque value through the section sense as an indication, so as to achieve the effect of precisely adjusting the torque value.

Drawings

Fig. 1 is an overall perspective view of the wrench of the present invention.

FIG. 2 is an exploded perspective view of the grip of the present invention.

FIG. 3 is a perspective cross-sectional view of the grip portion of the present invention.

FIG. 4 is a plan view of a cross-sectional view of the grip portion of the present invention.

Fig. 5 is a schematic diagram of the roller lift of the present invention.

Fig. 6 is a schematic view of the roller of the present invention being supported on the wall of the main rod body after being lifted.

FIG. 7 is a schematic view of the roller sinking in the limiting groove.

FIG. 8 is a schematic view of the present invention with the rotating ring rotated to a locked position.

Description of the reference numerals

th end 11 of main rod body 1

Second end 12 drive head 13

Limiting groove 14 torque scale value 15

Pole wall 16 handle 2

Extension pipe 21 perforations 22

23-degree scale 231 of torque scale

Notch 24 stop face 241

Roller 3 buckled part 31

Roller 4 of groove 311

Shaft hole 51 of rotating ring 5

Major diameter section 511 and minor diameter section 512

Shallow 521 of dodging groove 52

Deep 522 buckle 6

Assembling part 61

Detailed Description

Various objects of the embodiments are depicted in scale, size, amount of distortion or displacement suitable for illustration, rather than in scale of actual components, and are described in advance herein.

Referring to fig. 1 to 8, the present invention provides indicating locking type torque wrench, which includes a main shaft body , a handle , a roller , a roller , a roller 4 , a rotating ring 5 and an pressing member, which is a ring snap ring 6 in a preferred embodiment, wherein:

as shown in fig. 1 to 2, the main rod body 1 is an elongated rod and has st end 11 and th end 12, the main rod body 1 has driving head 13 at th end 11, the main rod body 1 has a plurality of limiting grooves 14 at the periphery near the second end 12, the plurality of limiting grooves 14 are arranged in a ring shape and spaced apart, a rod wall 16 is arranged between two adjacent limiting grooves 14, in this embodiment, there are ten limiting grooves 14, ten limiting grooves 14 are elongated, and each limiting groove 14 is arranged to extend along the length direction of the main rod body 1.

As shown in FIGS. 1-4, the grip 2 has an extension tube 21 at its end, the main shaft 1 extends through the extension tube 21 at its second end 12 and is received in the grip 2, and the main shaft 1 can rotate and extend relative to the grip 2 to adjust the torque of the driving head 13. in this embodiment, two through holes 22 are formed in the extension tube 21, and each through hole 22 can be aligned with each limit groove 14 along with the relative rotation of the grip 2 and the main shaft 1.

As shown in fig. 1 to 2, in the present embodiment, each through hole 22 is also long and has the same length direction as each limit groove 14, in addition, the present embodiment is provided with a torque scale 15 on the main rod body 1, when the main rod body 1 can rotate circles relative to the grip 2, the expansion amount of the main rod body 1 relative to the grip 2 is scales of the torque scale 15, thereby displaying the adjusted torque force, in addition, the present embodiment is provided with a torque scale 23 along the circumference on the extension tube 21, the torque scale 23 has ten scales 231, the distance between the two adjacent scales 231 is equal to the distance between the two adjacent limit grooves 14, and the torque scale 23 is used for displaying when the torque force is slightly adjusted.

As shown in fig. 3-4, a pair of

rollers

3 and 4 are disposed within each through hole 22, and the

rollers

3 and 4 are located on opposite sides of the extension tube 21 in this embodiment, the

rollers

3 and 4 may be sunken when meeting the aforementioned retaining grooves 14 (see fig. 7-8) or raised when meeting the rod wall 16 between two adjacent aforementioned retaining grooves 14 (see fig. 5-6) as the grip 2 and the main rod 1 rotate relative to each other.

As shown in fig. 2 to 4, the rotating ring 5 has an axle hole 51 and is sleeved outside the

rollers

3 and 4 on the extension tube 21, the rotating ring 5 can rotate relative to the extension tube 21 to be located at a locking position (see fig. 8) and a releasing position (see fig. 5 to 7), the inner periphery of the rotating ring 5 is provided with evasion grooves 52 corresponding to the

rollers

3 and 4, respectively, each evasion groove 52 is shallow and deep along the direction of rotating the rotating ring 5 from the locking position to the releasing position, each evasion groove 52 is pressed against the main rod body 1 when the

corresponding roller

3 or 4 is in a sunken state by a shallow 521, and each evasion groove 52 is provided with a space when the

corresponding roller

3 or 4 is in a deep raised state 522 by a deep portion 522.

As shown in FIG. 2, FIG. 3 and FIG. 5, the buckle 6 has assembling parts 61 at two different ends, the buckle 6 is located at two sides of the extension tube 21 with the two assembling parts 61, and the buckle 6 is extended along the outer circumference of the extension tube 21 and is normally fastened on the fastened part 31 of the roller 3. the roller 3 is pressed to the main rod body 1 by the pretension generated by the propping the buckle 6 when it is lifted (please refer to FIG. 6), and is pressed by the pretension when it meets the aforementioned limit groove 14 and sinks instantly to form a step feeling when the grip 2 and the main rod body 1 rotate relatively, which is the size of the collision force when the roller 3 sinks instantly when meeting the limit groove 14, and can be silent or audible.

In this embodiment, the snap ring 6 is formed by , each assembling portion 61 is formed by bending the snap ring 6 reversely at the two different ends to form an inverted hook shape, both sides of the extension tube 21 are respectively provided with grooves 24 corresponding to each assembling portion 61, each groove 24 is provided with a blocking surface 241, the facing surface of each blocking surface 241 is opposite to the roller 3, when the snap ring 6 is normally fastened on the fastened portion 31, each inverted hook-shaped assembling portion 61 is abutted against the blocking surface 241 in the corresponding groove 24 to be positioned, in this embodiment, only roller 3 is fastened by the snap ring 6, and in different embodiments, a plurality of rollers 3 provided with the fastened portion 31 are fastened by the snap ring 6 (not shown).

In this embodiment, the hooked portion 31 is located at the end of the roller 3, the hooked portion 31 has a groove 311, and the retaining ring 6 normally retains the roller 3 in the groove 311, wherein the groove 311 is recessed in the ring shape of the roller 3, furthermore, the shaft hole 51 of the rotating ring 5 of this embodiment has large diameter section 511 and small diameter section 512, the diameter of the large diameter section 511 is larger than that of the small diameter section 512, each evasive slot 52 of the rotating ring 5 is located on the inner periphery of the small diameter section 512, the retaining ring 6 is arched and located on the large diameter section 511, and the retaining ring 6 is extended along the outer periphery of the extension pipe 21 over a range larger than half of the circumference of the extension pipe 21.

It can be seen from the above description that, when adjusting the torque value, the operator can rotate the rotating ring 5 to the releasing position, and hold the grip 2 and the main rod 1 with both hands to rotate the grip 2 and the main rod 1 relatively, so that the end edge of the extension tube 21 of the grip 2 is aligned with the torque scale 15 on the main rod 1. when fine-tuning the torque value, during the relative rotation of the grip 2 and the main rod 1, after aligning any scale 231 of the torque scale 23 of the extension tube 21 with the torque scale 15 on the main rod 1, the rotating ring 5 is rotated to the locking position, so as to complete the torque adjustment of the torque wrench.

In the torque adjustment process of the torque wrench, when the scale 231 is aligned with the torque scale 15 on the main body 1, the roller 3 and the roller 4 are sunk in the through hole 22 when they meet the limit groove 14, at this time, if the grip 2 and the main body 1 rotate relatively, the roller 3 and the roller 4 will rise from the limit groove 14 (as shown in fig. 5 to 6), at this time, the roller 3 will press towards the main body 1 due to the pre-force generated by the top-support buckle 6, and when the roller 3 meets the limit groove 14 again as the grip 2 and the main body 1 continue to rotate relatively, the roller 3 will sink down to the limit groove 14 (as shown in fig. 7) instantly due to the pre-force, thereby forming a section sense when the grip 2 and the main body 1 rotate relatively as a prompt, at this time, the operator can know that the selected scale 231 is aligned with the torque scale 15 on the main body 1.

Claims

1, kind have locking type torque wrench of suggestion, its characterized in that, it includes:

main rod body, which is long rod with end and second end, the main rod body has driving head at end, and the main rod body has multiple limit grooves at the periphery near the second end, the multiple limit grooves are arranged annularly and at intervals, the rod wall of the main rod body is between two adjacent limit grooves;

, end has extending tube, the main rod body is inserted into the handle through the extending tube with the second end, the main rod body can rotate and extend relative to the handle to adjust the torque force of the driving head, wherein, the extending tube has a plurality of through holes, each through hole can align with each limit groove along with the relative rotation of the handle and the main rod body;

a plurality of rollers, at least rollers, pairs are disposed in each of the through holes, each roller can sink when meeting the limit groove along with the relative rotation of the grip and the main rod body, or rise when meeting the rod wall between two adjacent limit grooves;

rotary ring with axle hole and sleeved outside the rollers on the extension tube, the rotary ring can rotate to locking position and releasing position relative to the extension tube, dodging grooves are respectively arranged on the inner circumference of the rotary ring corresponding to the rollers, each dodging groove is shallow and deep along the direction of the rotary ring rotating from the locking position to the releasing position, and each dodging groove is pressed to the main rod body when the corresponding roller is in the sinking shape at the shallow position, and each dodging groove has a rising space when the corresponding roller is in the rising shape at the deep position

pressing part, which has combination parts at two different ends, the pressing part locates at two sides of the extension tube and extends along the periphery of the extension tube with the two combination parts and is buckled on buckled part of the roller at , the buckled roller is pressed to the main rod body by the pre-force generated by propping the pressing part when in the rising state, and is pressed down by the pre-force when meeting the limit groove to sink instantly, so as to form the section sense when the handle and the main rod body rotate relatively.

2. The locking type torque wrench with indication as claimed in claim 1, wherein the pressing member is snap ring.

3. The locking type torque wrench with indication as claimed in claim 2, wherein the two assembling portions are located at two ends different from the buckle and are -shaped with the buckle.

4. The locking type torque wrench with indication as claimed in claim 3, wherein each of the assembling portions is formed by reversely bending the buckle ring at the different ends to form a barb shape.

5. The locking type torque wrench with indication as claimed in claim 4, wherein the extension tube has grooves on both sides corresponding to the assembling portions, and blocking faces are provided in the grooves, each blocking face faces away from the roller retained by the retaining ring, and each of the barbed assembling portions is positioned against the blocking face in the corresponding groove when the retaining ring is normally retained on the retained portion.

6. The locking type torque wrench with indication as claimed in claim 5, wherein the buckled portion is located at end of the roller, the buckled portion has groove portion, and the buckle ring is normally buckled with the buckled roller in the groove portion.

7. The locking type torque wrench with the indication as claimed in claim 6, wherein the groove is annularly recessed in the roller.

8. The indicating locking type torque wrench of claim 2, wherein the shaft hole has large diameter section and small diameter section, the large diameter section has a larger diameter than the small diameter section, each of the evasion grooves of the rotating ring is provided on an inner periphery of the small diameter section, and the retaining ring is arched to the large diameter section.

9. The prompter locking torque wrench of claim 8, wherein the retaining ring extends along the outer circumference of the extension tube by more than -half of the extension tube circumference.

10. The locking type torque wrench with the prompt of claim 1, wherein the plurality of limiting grooves are elongated and extend along the length direction of the main rod body, and each through hole is elongated and has the same length direction as the plurality of limiting grooves.