TWM611470U - Grip locking and braking structure for hand tool torque adjustment device - Google Patents

Abstract

A handle locking and braking structure of a hand tool torque adjusting device, comprising: a hand tool handle tube, an adjusting rod, a fixing seat, a brake seat, a grip, a connecting ring, two brake pins, and a locking piece; rotation The grip adjusts the torque value of the hand tool, rotates the locking piece to push the brake pin, inserts the brake pin into the pin end slot of the brake seat, locks and brakes the grip so that it cannot be rotated, Keep the torque value of the hand tool.

Description

Grip locking and braking structure of hand tool torque adjusting device

This creation relates to the technical field of torque wrenches, in particular to the structure that can lock and brake the torque setting adjusted by the torque wrench before use.

The wrench is a hand tool that can loosen or tighten the screw. Its structure roughly includes a handle and a head at the front end for operating the screw. Force is applied to the handle to generate torque to drive the head to tighten the screws, so as to achieve the purpose of assembly and combination of components.

The biggest problem with operating the wrench to tighten the screw is that it is not easy to control the tightening degree. Based on the feel and experience, it is easy to over tighten the screw and cause the thread to collapse. The industry has launched a torque wrench tool with torque adjustment function to meet this demand.

A typical torque adjustment wrench, as shown in Figure 1, roughly includes a wrench body 1, a central push rod 2, an adjustment handle 3. One end of the wrench body 1 is equipped with a working head 4, and the other end is adjustable The adjustment handle 3 and the central push rod 2 are assembled in the wrench body 1, one end of which is fixed to the adjustment handle 3 by a fixing member 5, and rotates and shifts with the adjustment of the adjustment handle 3, thereby compressing or relaxing the handle The top spring and roller set can adjust the torque value of the wrench. For details, please refer to patent cases such as TWM267020 and TW318917. However, because the adjustment handle 3 is movably assembled at one end of the wrench body 1, the force of the user holding and operating the wrench will cause the adjustment handle 3 to rotate, which changes the original set torque value. Therefore, a locking solution is required. solve this problem.

In view of the above-mentioned problems, this author proposes a locking and braking structure whose effect is to lock the torque value of the wrench tool that has been set so that it will not be changed during the operation of the wrench.

Technical features of this creation:

A handle locking and braking structure of a hand tool torque adjusting device, comprising:

One hand tool handle tube, one adjusting rod, one fixing seat, one brake seat, one handle, one connecting ring, two brake pins, and one locking piece;

The adjusting rod forms a pusher, a threaded shaft, a toothed section, and a threaded locking section in sequence along its axis line;

The threaded shaft of the adjusting rod is combined with a threaded shaft hole of the fixing seat; the fixing seat is fixed inside the end of the handle tube of the hand tool; the push rod penetrates into the handle tube of the hand tool, and the push head Push against an adjusting spring inside the handle tube of the hand tool;

The brake seat includes a ring body and two blades extending axially from one side of the ring body. The center of the ring body is provided with a hole for the toothed section of the adjusting rod to penetrate, and the two blades are inserted into the The outer wall of the fixing seat is in two open grooves parallel to the axial direction; the other side of the annular body is provided with a plurality of pin end slots around the perforation;

The handle is sheathed on the outside of the handle tube of the hand tool, and one end of the handle is connected and fixed with the connecting ring;

The inner part of the connecting ring is coaxially provided with a solid part and a receiving groove; the center of the solid part is axially penetrated with a tooth-shaped shaft hole, sleeved on the toothed section of the adjusting rod; the solid part is also axially penetrated Two pin holes are provided, and the two brake pins pass through the two pin holes; one end of the brake pin opposite to the annular body is an arc-shaped insertion end, and the other end is a push end;

The locking piece is a tubular element with one end closed and one end open, and the locking piece penetrates the In the receiving groove of the connecting ring, the center of the closed end of the locking member is locked to the threaded locking section of the adjusting rod with a threaded hole;

A gap is maintained between the closed end of the locking member and the solid part of the connecting ring, and the gap allows the brake pin to retreat, so that the plug end is separated from the pin end slot of the brake seat, and the handle adjustment hand tool can be rotated The torque value;

Rotate the locking member so that the closed end of the locking member abuts against the solid part of the connecting ring, the closed end pushes against the push end of the brake pin, and the plug end is inserted into the pin end of the brake seat In the slot, the grip cannot be turned, and the torque value of the hand tool is maintained.

10: Hand tool handle tube

11: Radial positioning piece

12: Ring groove

13: Anti-drop ring

14: Adjusting spring

20: Adjusting lever

21: Push head

22: Threaded shaft

23: Tooth section

24: Threaded locking section

30: fixed seat

31: Threaded shaft hole

32: open slot

35: brake seat

36: Ring body

37: Wings

38: Piercing

39: Pin end slot

40: Grip

41: Internal thread section

42: connecting ring

43: External thread section

44: Entity Department

45: toothed shaft hole

46: pin hole

47: receiving slot

50: brake pin

51: Socket

52: push to the end

55: positioning nut

56: Internal thread section

60: Locking piece

61: closed end

62: threaded hole

63: open end

64: brake nut

65: plug sleeve

[Figure 1] Conventional structure of torque adjustment wrench.

[Figure 2] The three-dimensional appearance view of the locking and braking structure of the torque adjustment wrench of this creation.

[Figure 3] A three-dimensional exploded view of the locking and braking structure of this creation.

[Figure 4] The section IV-IV in Figure 2 and the schematic diagram of torque adjustment.

[Figure 5] Sectional view of V-V in Figure 2.

[Figure 6] The cross-section of the locking and braking structure of this creation and one of the schematic diagrams of locking and braking.

[Figure 7] The second section of the locking and braking structure of this creation and the second schematic diagram of the locking and braking.

In order to facilitate the description of the central idea of the creation in the column of the above-mentioned new content, specific examples are used to express it. The various objects in the embodiment are drawn according to the proportion, size, deformation or displacement suitable for illustration, rather than drawn according to the proportion of the actual element, which will be described first. In the following description, the same and symmetrically arranged elements are denoted by the same numbers.

As shown in Figures 2 to 5, the grip locking and braking structure of the hand tool torque adjusting device of the present invention includes a hand tool handle tube 10, an adjusting rod 20, a fixing seat 30, a brake seat 35, a grip 40, and a connection The ring 42, two brake pins 50, a positioning nut 55, a locking member 60, a brake nut 64, and a plug sleeve 65.

The adjusting rod 20 has a push head 21, a threaded shaft 22, a toothed section 23, and a threaded locking section 24 that are sequentially formed along its axis line, and have a threaded locking section 24 from the pusher 21 to the threaded locking section 24. Decreasing radial difference.

The fixing seat 30 has a threaded shaft hole 31 passing through its two ends, and the threaded shaft 22 of the adjusting rod 20 is connected to the threaded shaft hole 31. The fixing seat 30 is fixed to the end of the hand tool handle tube 10, and the fixing seat 30 is positioned at the end of the hand tool handle tube 10 through two radial positioning members 11 passing through the fixing seat 30 and the wall surface of the hand tool handle tube 10 radially. The handle tube 10 of the hand tool cannot be rotated or displaced; the handle tube 10 of the hand tool has an annular groove 12 corresponding to the outer wall of the two radial positioning members 11, and an anti-falling ring 13 is sleeved therein to stop the two radial positioning Piece 11 prevents it from detaching. Through the fixing seat 30, the adjusting rod 20 penetrates into the hand tool handle tube 10, and the push head 21 abuts an adjusting spring 14 of the torsion adjusting member inside the hand tool handle tube 10. Two open grooves 32 are provided on the outer wall of the fixing seat 30 parallel to the axial direction.

The brake seat 35 includes an annular body 36, and two blades 37 extending axially from one side of the annular body 36, and the two blades 37 are inserted into the two open slots 32 of the fixing seat 30 (please also refer to Figure 6), making the brake seat 35 a non-rotating but axially displaceable component. The center of the ring body 36 of the brake seat 35 is provided with a through hole 38 for the toothed section 23 of the adjusting rod 20 to penetrate; the step formed by the diameter difference between the threaded shaft 22 and the toothed section 23, the ring The body is sleeved outside the toothed section 23 but ends at the threaded shaft 22. A plurality of pin end slots 39 are arranged around the through hole 38 on the other side of the ring body 36.

The grip 40 is threaded on the outside of the hand tool handle tube 10, and one end of the handle 40 is provided with an internal threaded section 41 for threaded engagement with a part of an external threaded section 43 of the connecting ring 42, and the other of the external threaded section 43 A part of the thread is engaged with the internal thread section 56 of the positioning nut 55, and the positioning nut 55 abuts and limits the end of the grip 40.

A solid part 44 and a receiving groove 47 with a circular contour are coaxially provided inside the connecting ring 42. A tooth-shaped shaft hole 45 is provided axially through the center of the solid portion 44 and sleeved on the outside of the tooth-shaped section 23 of the adjusting rod 20 to form a rotational limiting relationship between the adjusting rod 20 and the connecting ring 42. Those skilled in the art know that the toothed section 23 and the toothed shaft hole 45 can also be replaced by holes and columns with an elliptical, semicircular or polygonal cross-section to achieve the same rotational limit. relationship.

The solid portion 44 further has two pin holes 46 extending therethrough in the axial direction, and the two brake pins 50 pass through the two pin holes 46. One end of the brake pin 50 opposite to the annular body 36 is an arc-shaped insertion end 51, and the other end is a flat push end 52.

The locking member 60 is a tubular element with one end closed and one end open, and a threaded hole 62 is provided in the center of the closed end 61. The locking member 60 is inserted into the receiving groove 47 of the connecting ring 42 with its closed end 61, the locking member 60 is locked to the threaded locking section 24 of the adjusting rod 20 with its threaded hole 62, and the locking member A gap is maintained between the closed end 61 of the 60 and the physical portion 44 of the connecting ring 42, and the gap allows the brake pin 50 to move so that the plug end 51 is separated from the pin end slot 39 of the brake seat 35. The brake nut 64 is locked to the threaded locking section 24 of the adjusting rod 20, and the plug sleeve 65 is sleeved on the open end 63 of the locking member 60 to close the locking member 60 accordingly.

As shown in Figure 5, the way to adjust the torque value of the hand tool is to rotate the grip 40. Based on the connection relationship of the above-mentioned components, the connecting ring 42, the adjusting rod 20, the positioning nut 55, the locking member 60, the brake screw The cap 64 also rotates synchronously, and the adjusting rod 20 rotates and moves linearly at the same time, so that the brake seat 35. The connecting ring 42, the grip 40, the positioning nut 55, the locking member 60, and the brake nut 64 also move linearly simultaneously, so that the pusher 21 compresses or relaxes the adjusting spring 14, thereby changing the hand The torque value of the tool. According to the known technology, a torque scale is provided on the outside of the handle tube 10 of the hand tool, which corresponds to different scales when the handle 40 is rotated and displaced, so that the user can know the adjustment of the torque value.

It should be particularly noted that when the connecting ring 42 rotates, the brake pin 50 will also rotate with the connecting ring 42. Based on the fact that the closed end 61 of the locking member 60 and the physical part 44 of the connecting ring 42 are maintained For the gap for the retraction of the brake pin 50, the insertion end 51 of the brake pin 50 will slip with the pin end slot 39 of the brake seat 35 and move away from the pin end slot 39, so the brake pin 50 is inserted into the pin end The groove 39 has no plug-in positioning relationship, so the rotation of the connecting ring 42 will not be hindered.

As shown in Figure 6, after adjusting the torque value, the torque value needs to be maintained at the set value, and the method of maintaining is to lock the grip 40 so that it will not rotate. The method of locking is to rotate the locking member 60 so that its closed end 61 pushes against the abutting end 52 of the brake pin 50, so that the brake pin 50 moves along the pin hole 46, and its plug end 51 enters the pin end of the brake seat 35 In the slot 39, at this time, the closed end 61 of the locking member 60 has abutted against the physical part 44 of the connecting ring 42, the original gap for retreating the brake pin 50 no longer exists, and the brake pin 50 remains and brakes Due to the braking relationship of the seat 35, the connecting ring 42, the grip 40, the positioning nut 55 and the adjusting rod 20 can no longer be rotated.

As shown in Figure 7, a safer method is to disassemble the plug sleeve 65, rotate the brake nut 64 to tighten and fix the locking member 60, and then re-seat the plug sleeve 65 back to the locking member 60, and so on. It can be completely ensured that the connecting ring 42, the grip 40, the positioning nut 55, and the adjusting rod 20 can no longer be rotated and displaced, thereby maintaining the set torque value.

10: Hand tool handle tube

11: Radial positioning piece

12: Ring groove

13: Anti-drop ring

14: Adjusting spring

20: Adjusting lever

21: Push head

22: Threaded shaft

23: Tooth section

24: Threaded locking section

30: fixed seat

31: Threaded shaft hole

32: open slot

35: brake seat

36: Ring body

37: Wings

38: Piercing

39: Pin end slot

40: Grip

41: Internal thread section

42: connecting ring

43: External thread section

44: Entity Department

45: toothed shaft hole

46: pin hole

47: receiving slot

50: brake pin

51: Socket

52: push to the end

55: positioning nut

56: Internal thread section

60: Locking piece

61: closed end

62: threaded hole

63: open end

64: brake nut

65: plug sleeve

Claims (7)

A handle locking and braking structure of a hand tool torque adjusting device, comprising: One hand tool handle tube, one adjusting rod, one fixing seat, one brake seat, one grip, one connecting ring, two brake pins, and one locking piece; The adjusting rod is sequentially formed along its axis line with a push head, a threaded shaft, a toothed section, and a threaded locking section; The threaded shaft of the adjusting rod is combined with a threaded shaft hole of the fixing seat; the fixing seat is fixed inside the end of the handle tube of the hand tool; the push rod penetrates into the handle tube of the hand tool, and the push head Push against an adjusting spring inside the handle tube of the hand tool; The brake seat includes a ring body and two blades extending axially from one side of the ring body. The center of the ring body is provided with a hole for the toothed section of the adjusting rod to penetrate, and the two blades are inserted into the The outer wall of the fixing seat is in two open grooves parallel to the axial direction; the other side of the annular body is provided with a plurality of pin end slots around the perforation; The handle is sheathed outside the handle tube of the hand tool, and one end of the handle is connected and fixed with the connecting ring; The inner part of the connecting ring is coaxially provided with a solid part and a receiving groove; the center of the solid part is axially penetrated with a tooth-shaped shaft hole, sleeved on the toothed section of the adjusting rod; the solid part is also axially penetrated Two pin holes are provided, and the two brake pins pass through the two pin holes; one end of the brake pin opposite to the annular body is an arc-shaped insertion end, and the other end is a push end; The locking member is a tubular element with one end closed and one end open. The locking member penetrates the receiving groove of the connecting ring. The center of the closed end of the locking member is locked to the threaded locking connection of the adjusting rod with a threaded hole. segment; A gap is maintained between the closed end of the locking member and the solid part of the connecting ring, and the gap allows the brake pin to retreat, so that the plug end is separated from the pin end slot of the brake seat, and the handle can be rotated to adjust the manual With the torque value; Rotate the locking member so that the closed end of the locking member abuts against the solid part of the connecting ring, the closed end pushes against the push end of the brake pin, and the plug end is inserted into the pin end of the brake seat In the slot, the grip cannot be turned, and the torque value of the hand tool is maintained. According to claim 1, the grip locking and braking structure of the hand tool torque adjusting device further includes a positioning nut; one end of the connecting ring is connected to fix the end of the handle, and the other end of the connecting ring is connected to fix the positioning screw Cap, the positioning nut blocks the handle. The handle locking and braking structure of the hand tool torque adjusting device according to claim 2, wherein the handle is provided with an internal thread section for threaded engagement with a part of an external thread section of the connecting ring; Another part of the external thread segment is threadedly engaged with an internal thread portion of the positioning nut. According to claim 1, the grip locking and braking structure of the hand tool torque adjusting device further includes a brake nut, which is locked to the threaded locking section of the adjusting rod, when the insertion of the brake pin The end is inserted into the pin end slot of the brake seat, and the brake nut is screwed to fix the locking piece. According to claim 4, the grip locking and braking structure of the hand tool torque adjusting device further includes a plug sleeve which is sleeved on the open end of the locking member to close the locking member. According to claim 1, the grip locking and braking structure of the hand tool torque adjusting device further includes two radial positioning members passing through the fixing seat and the wall surface of the hand tool handle tube radially to fix the fixing seat to The inside of the end of the handle tube of the hand tool. According to claim 6, the handle locking and braking structure of the hand tool torque adjusting device, wherein the hand tool handle tube defines an annular groove corresponding to the outer wall of the two radial positioning members, and an anti-falling ring is sleeved therein to stop the two The radial positioning piece prevents it from detaching.

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