TWI752810B - drawstring wrench - Google Patents

Abstract

The present invention relates to a belt wrench, comprising: a handle with an active space; a belt, which is in the form of an annular shape, the belt is inserted into or pulled out of the active space through the opening, and the belt is exposed on the handle The part of the handle is looped to form a ring-shaped socket; an elastic unit, one end of which is tied to the fixed position of the handle; the other end has an elastic thrust, which elastically supports the belt, and the belt Provides an elastic thrust that moves into the handle; through the elastic thrust of the elastic unit, the socket part of the belt can be automatically adjusted to the most suitable size, so that the user can quickly adjust the operation.

Description

drawstring wrench

The present invention is related to a tool, and more specifically refers to a belt wrench for tightening with elastic force.

Press, the known strap wrench includes: a handle, one end of the handle is pivotally connected to a buckle; a belt, one end of which is fixed on the buckle, and the other end is passed through a through hole of the buckle , so that the belt forms a socket that can be sleeved on the outer circumference of an oil filter element. After the belt passes through the through hole, the user can change the size of the socket by pulling the belt by hand, so as to be used for different sizes of oil filter element. When you want to remove the oil filter, first use the socket to cover the outer circumference of a circular object (such as an oil filter), then tie the belt tensioning ring to the circular object, and then turn the handle to rotate the circular object. Items are dismantled and assembled.

However, the belt of the conventional strap wrench passes through the socket formed by the through hole and cannot securely tighten the oil filter. When turning the handle to rotate the oil filter, in addition to using One hand holds the handle to rotate and apply force, and at the same time, it is necessary to hold the tail end of the belt to prevent the belt from slipping off during the force application process, which makes the operation rather unsmooth and inconvenient.

The main purpose of the present invention is to provide a strap wrench, which can adjust the size of its socket portion under the action of elastic thrust and firmly tighten the object to be rotated.

The strap wrench provided by the present invention includes: a handle, which has an opening and an active space inside the handle, the opening is located at one end of the handle and communicates with the active space; A belt, which is in the form of an annular shape, is fixed on the handle with a fixed end, the belt is inserted into or pulled out of the movable space through the opening, and the belt is exposed to part of the loop of the handle and is wound out to form a a ring-shaped socket; An elastic unit, one end of which is fixed at the fixed position of the handle; the other end has an elastic thrust to elastically hold the belt, providing an elastic thrust to the belt to move into the handle, and the elastic element can make the belt The socket part shrinks into the handle; an actuating member pivotably pivoted in the movable space, the actuating member has an operation end and a contact end, the operation end is exposed outside the handle, the contact end protrudes out of the opening and is adjacent to the socket portion ; The bottom of the actuating piece has an elastic force resisting portion and a force resisting portion, the elastic resisting portion is on the same side as the contact end, and the force resisting portion is on the same side as the operating end; the belt is connected through the The bottom of the actuating piece; an elastic member is arranged between the actuating piece and the handle, and its elastic energy is to make the elastic force abutting portion of the actuating piece contact the belt, and pressing the actuating piece makes the elastic force resisting portion not When the belt is pressed against the belt, the belt is pushed by the elastic unit to shrink the socket portion.

Thereby, the strap wrench can adjust the size of the socket part of the belt through the elastic force of the elastic unit, push the socket part of the belt into the accommodating space, and can automatically adjust and tighten the object to be rotated, The user does not need to apply additional force to bind, and does not need to use the hands to pull the strap.

Please refer to FIGS. 1 to 3 , which is a strap wrench 1 according to a preferred embodiment of the present invention, used to tighten and rotate an object to be rotated, which includes: a handle 10 , an actuating member 20 , and an elastic unit 30 and a belt 40.

The handle 10 is a long flat tubular body, comprising two long side walls 11 arranged vertically and one upper side wall 13 and a lower side wall 14 which are horizontally arranged and connected to the two long side walls 11 , the two long side walls 11 are connected to the upper and lower side walls 11 . The lower side walls 13 and 14 enclose an active space 15 inside the handle. The active space 15 is arranged along the length direction of the handle 10. The two long side walls 11 are respectively provided with a long hole slot 111. A support pin 113 is disposed between the two long side walls 11 and away from the slot 111 ; A side hole 17 is formed on the upper side wall 13 , and the side hole 17 communicates with the movable space 15 and is adjacent to the opening 16 .

The actuating member 20 passes through the two long side walls 11 by a pivot 60 and is pivoted in the movable space 15 . The actuating member 20 has an operating end 21 and a contact end 22 above the actuating member 20 , which are respectively formed on the side of the actuating member 20 . On two sides, the pivot 60 is close to the operating end 21 , the bottom of the actuating member 20 has an elastic force abutting portion 23 and a force applying force abutting portion 24 , and the elastic force abutting portion 23 is on the same side as the contact end 22 ; The force resisting portion 24 is on the same side as the operating end 21 . The operating end 21 protrudes out of the side hole 17 , and the contact end 22 protrudes out of the opening 16 . The actuating member 20 defines a groove 25 between the pivot shaft 60 and the contact end 22 . An elastic member 26, such as a compression spring, has one end accommodated in the groove 25 and the other end against the inner side of the upper side wall 13 of the handle 10. The elastic member 26 can push the actuating member 20 to the pivot The shaft 60 is a shaft and moves in a direction away from the upper side wall 13 . When the actuating member 20 is not stressed, the elastic force resisting portion 23 elastically presses the belt 40 downward. When the operating end 21 is pressed, the actuating member 20 can swing around the pivot 60 , so that the elastic force resisting portion 23 and the contact end 22 are displaced upward, and the force resisting portion 24 is displaced downward. When the force applied to the operating end 21 is released, the elastic member 26 generates an elastic restoring force to make the actuating member 20 return to its original position. Top swing reset. In addition, a channel 18 is formed between the bottom of the actuating member 20 and the lower side wall 14 ; in addition, the contact end 22 is formed in an arc shape, and a rough or rough surface is formed on the outer peripheral surface in contact with the belt 40 Serrated engaging portion 27 .

The elastic unit 30 includes a base 31 , an elastic body 32 and a push member 33 ; the elastic unit 30 is disposed in the movable space 15 , and an end of the base 31 close to the opening 16 is connected with a pivot portion 311 Pivoted in the movable space 15, and the other end away from the opening has a accommodating groove 312; the elastic body 32 is disposed in the accommodating groove 312 and generates an elastic thrust; the pushing member 33 has an actuating rod 331 and a collar portion 332; one end of the actuating rod 331 is elastically pressed against the elastic body 32, and the other end is inserted into the collar portion 332, and the pusher 33 can be acted by the elastic body 32 to generate an elasticity Displaces in the direction away from the base 31 ; a sliding rod 333 is respectively provided on both sides of the collar portion 332 at the opposite positions of the slot 111 , and the collar portion 332 can drive the sliding rod 333 to the slot when sliding. 11 internal displacement.

The belt 40 is an annular structure with a suitable length. It is fixed on the lower side wall 14 of the movable space 15 with a fixed end 41 . The belt 40 extends into the movable space 15 through the opening 16 . The end 41 is fixed in the handle 10 by two fixing pieces 70 passing through the lower side wall 14 , and the belt 40 goes around the support pin 113 and the elastic unit 30 The support pin 113 can separate the belt 40 in the movable space 15 without interfering with the elastic unit 30 . The belt passes through the opening 16 through the passage 18 and enters the movable space 15 . The portion of the belt 40 exposed outside the opening 16 of the handle 10 is looped to form a socket 43 . The socket 43 The size is adjustable, and the contact end 22 of the actuating member 20 is close to the socket portion 43 .

Please refer to FIG. 1 and FIG. 3 to FIG. 5 , when the strap wrench 1 of the present invention is not in use, the socket portion 43 maintains an appropriate size (represented by an imaginary line in the figure), and the operating end 21 of the actuating member 20 passes through Outside the side hole 17, the contact end 22 protrudes from the front end of the handle.

To adjust the length of the socket portion 43 of the belt 40 , please refer to FIG. 3 , the belt 40 can be directly pulled outwards by hand to expand the socket portion 43 . While keeping in contact with the belt 40, when the belt 40 is pulled, the elastic member 26 can be compressed, so that the elastic abutting portion 23 moves upward, so that the actuating member 20 does not press against the belt 40, so that the elastic member 26 can be compressed. When the belt 40 is pulled out, the user does not need to press the actuating member 20 and the pulling operation of the belt 40 is not affected. When the user pulls the belt 40 out, the exposed portion of the belt 40 outside the handle 10 , that is, the inner diameter of the socket portion 43 becomes larger; The belt 40 will shrink relative to the direction of the opening 16 , so that when the belt 40 shrinks, the pusher 33 will be squeezed toward the base 31 , that is, the collar portion 332 will be squeezed toward the base 31 . The actuating rod 331 will press against the elastic body 32 to generate an elastic force, and at the same time, the sliding rod 333 will also move in the direction of the opening 16 in the slot 111 . The sliding rod 333 has the function of limiting the position, which can prevent the collar portion 332 from moving beyond the position of the slot 111, thereby preventing the socket portion 46 formed on the outside of the belt 40 from being too large or too small; when the user stops pulling When the belt 40 is used, the elastic force generated by the elastic member 26 will be applied to the actuating member 20, so that the elastic force abutting portion 23 is pressed against the belt 40 downward, so that the belt 40 cannot be retracted toward the active space 15, and the belt 40 cannot be retracted. The size of the socket portion 43 .

Please refer to FIGS. 5 and 6 , then, the sleeve 43 is sleeved on the outer circumference of an object to be rotated, such as an oil filter F, the outer shape of the object to be rotated can be a cylindrical or polygonal cylinder, and then, Press the operating end 21 downward to swing the operating end 21 side of the actuating member 20 downward, so that neither the elastic force resisting part 23 nor the force resisting part 24 abuts against the belt 40, the belt 40 will be affected by The elastic restoring force of the elastic unit 30 pushes the elastic body 32 to push the pushing member 33 to move away from the base 31 , so that the collar portion 332 relatively pushes the belt 40 to move into the movable space 15 . In addition, because the belt 40 is looped on both sides of the elastic body 32, the retracting speed of the belt 40 will be twice as fast as the elastic unit 30, which can speed up the adjustment speed and make the sleeve 43 automatically shrink. Until the sleeve wraps the oil filter element F.

Please refer to FIG. 7 , when the oil filter element F is to be rotated, the hand pulls the handle 10 toward the lower side wall 14 of the handle 10 , and the outer ring surface of the socket portion 43 is in contact with the actuating member 20 . The engaging portion 27 of the end 22 moves to form a close contact state, and at the same time, the actuating member 20 rotates toward the contact end 22, so that the force resisting portion 24 rotates toward the lower side wall 14 and abuts the belt 40. At this time, , the strap wrench 1 uses two contact positions of the contact end 22 of the actuating member 20 and the force resisting portion 24 to tighten the belt 40, so that the belt 40 cannot be pulled out of the movable space 15, the socket The portion 43 cannot be expanded outward, so that the wrench can firmly tighten the oil filter F, and the greater the force exerted by the user, the greater the force of the socket portion 43 of the belt 40 to push the contact end 22 of the actuating member 20. is larger, the greater the force of the contact end 22 and the force resisting part 24 to press the belt 40 is, it is beneficial to pull the handle 10 to loosen or tighten the oil filter F, especially, the user pulls the When the wrench 1 is strapped, the actuating member 20 will make the contact end 22 and the force abutting portion 24 more tightly against the belt 40 due to the force, which makes the operation of removing and installing the oil filter F easier and faster.

The strap wrench 1 provided by the present invention can control the belt 40 through the elastic force of the elastic unit 30 through its overall mechanism design, and can adjust the size of the socket portion 43 so that the socket portion 43 can automatically tighten the oil filter element F, and the operation is simple and convenient. When using the strap wrench 1 of the present invention to turn the oil filter element F, as long as the handle 10 is held and turned, the actuating member 20 can connect the engaging portion 27 of the contact end 22 to the force-applying abutting portion when the force is applied. 24 The two positions are against the belt 40, so that the belt 40 cannot be pulled out of the movable space 15, the oil filter element F can be tightened more firmly, and the operation of unscrewing the oil filter element F is smooth, which is indeed beneficial to the oil. The disassembly and assembly of the filter element F will not have the disadvantage that the conventional belt wrench must hold the belt and turn it at the same time. To sum up, the strap wrench 1 of the present invention is easy to operate, convenient to use, and more practical.

It is worth mentioning that, because the moving distance of the belt 40 is twice that of the pushing member 33 , the elastic unit 30 can quickly retract the belt 40 to improve the operation efficiency.

Please refer to FIGS. 8 and 9, which is a second preferred embodiment provided by the present invention, and its main structure is the same as that of the previous embodiment.

The handle 10 is provided with a marking portion 112 on the outside of the slot 111. The marking portion 112 is represented by a scale in this embodiment, and it can also be represented in different ways such as numbers or blocks, which is not limited. When the belt 40 drives the collar portion 332 to move, the collar portion 332 can drive the sliding rod 333 to move in the slot 11 when sliding, and at the same time, the two sliding rods 333 indicate the position of the marking portion 112 at the same time. , the size of the sleeve 43 formed by the belt 40 can be calculated, judged or displayed through the change of the position of the sleeve 322. When the position of the sliding rod 333 changes with the sleeve 332, the indicator can be passed through The part 112 knows the relative size of the socket part 43 , and does not need to enlarge the socket part 43 excessively or the socket part 43 is too small and needs to be adjusted again.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit it. The strap wrench provided by the present invention is a structure pioneered by similar items, and improves many deficiencies of the existing strap wrench, and is progressive, and an application can be made in accordance with the law.

1: Belt wrench

10: Grip

11: Long side walls

111: Long hole slot

112: Marking Department

113: Support pin

13: Upper side wall

14: Lower side wall

15: Event Space

16: Opening

17: Side hole

18: Channel

20: Actuator

21: Operation terminal

22: Contact end

23: Elastic resistance part

24: Force resisting part

25: Groove

26: Elastic components

27: Engagement

30: Elastic unit

31: Pedestal

311: Pivot part

312: Container

32: Elastomer

33: Pusher

331: Actuator

332: Collar Department

333: Slider

40: Belt

41: Fixed end

43: Socket

60: Pivot

70: Fixing parts

F: oil filter

The purpose, feature and effect of the present invention can be understood from the descriptions and drawings of the following two preferred embodiments, wherein: FIG. 1 is a perspective view of some components of the strap wrench according to the preferred embodiment of the present invention after the handle is removed. FIG. 2 is an exploded perspective view of a strap wrench according to a preferred embodiment of the present invention. FIG. 3 is an assembled cross-sectional view of a belt wrench according to a preferred embodiment of the present invention, and shows a schematic diagram of the sleeve part for adjusting the belt. FIG. 4 is a schematic view of the position of the belt sleeve at the maximum size according to the preferred embodiment of the present invention. FIG. 5 is a schematic view of the position of the belt sleeve at the minimum size according to the preferred embodiment of the present invention. FIG. 6 is a schematic diagram of the set part of the belt wrench restraining the object to be rotated according to the preferred embodiment of the present invention. FIG. 7 is a schematic diagram of the action of the belt wrench turning the object to be rotated according to the preferred embodiment of the present invention. FIG. 8 is a schematic diagram showing the position of the handle of the second preferred embodiment of the present invention having a marking portion, showing the position of the belt sleeve at the maximum size. FIG. 9 is a schematic diagram showing the position of the belt sleeve at the minimum size of the handle having a marking portion according to the second preferred embodiment of the present invention.

1: Belt wrench

10: Grip

11: Long side walls

111: Long hole slot

113: Support pin

13: Upper side wall

14: Lower side wall

17: Side hole

20: Actuator

21: Operation terminal

22: Contact end

23: Elastic resistance part

24: Force resisting part

25: Groove

26: Elastic components

27: Engagement

30: Elastic unit

31: Pedestal

311: Pivot part

312: Container

32: Elastomer

33: Pusher

331: Actuator

332: Collar Department

333: Slider

40: Belt

41: Fixed end

43: Socket

60: Pivot

70: Fixing parts

Claims (10)

A drawstring wrench, comprising: a handle, which has an opening and an active space inside the handle, the opening is located at one end of the handle and communicates with the active space; A belt, which is in the form of an annular shape, is fixed on the handle with a fixed end, the belt is inserted into or pulled out of the movable space through the opening, and the belt is exposed to part of the loop of the handle and is wound out to form a a ring-shaped socket; An elastic unit, one end of which is fixed at the fixed position of the handle; the other end has an elastic thrust which can elastically hold the belt, and provides an elastic thrust for the belt to move into the handle, so that the socket part will receive The elastic unit shrinks into the handle by the action of the elastic unit; an actuating member pivotably pivoted in the movable space, the actuating member has an operation end and a contact end, the operation end is exposed outside the handle, the contact end protrudes out of the opening and is adjacent to the socket portion ; The bottom of the actuating piece has an elastic force resisting portion and a force resisting portion, the elastic resisting portion is on the same side as the contact end, and the force resisting portion is on the same side as the operating end; the belt is connected through the The bottom of the actuating piece; an elastic member is arranged between the actuating piece and the handle, and its elastic energy is to make the resilient abutting portion of the actuating piece contact the belt; pressing the actuating piece makes the resilient resisting portion not When the belt is pressed against the belt, the belt is pushed by the elastic unit to shrink the socket portion. The strap wrench according to claim 1, wherein: the elastic unit comprises a base, an elastic body and a pusher; the base is positioned in the movable space, and the elastic system is arranged on the base and the pusher Between the pieces, the elastic body generates an elastic force to push the push piece to elastically hold the belt, so that the push piece provides an elastic push force to the belt to move into the handle. The strap wrench according to claim 2, wherein: one side of the base of the elastic unit is pivoted to the handle by a pivot part, and the other side is provided with an accommodating groove; the elastic system is accommodated in the accommodating part. in the groove; the pusher has an actuating rod and a collar part; one end of the actuating rod is elastically pressed against the elastic body, and the other end is connected to the collar part; the belt is wound around the collar Ministry. The strap wrench according to claim 2, wherein: the handle is provided with at least one long guide hole, the side of the collar portion of the elastic unit is oppositely provided with at least one sliding bar, and each of the sliding bars is set at each inside the long guide hole. The strap wrench according to claim 4, wherein: the handle is provided with a marking part around the long guide hole, and the marking part can correspond to the size of the socket part. The strap wrench of claim 1, wherein: the handle is provided with a support pin between the opening and the elastic unit, and the belt is wound around the support pin. The strap wrench according to claim 1, wherein: the actuating member is pivoted in the movable space by a pivot, a channel is formed between the bottom of the actuating member and a side wall of the handle, and the belt is threaded through the channel. The strap wrench according to claim 7, wherein: the actuating member is substantially U-shaped, the operating end and the contact end are respectively formed on the top end of the actuating member, and a groove is set between the operating end and the contact end ; One end of the elastic member is accommodated in the groove, and the other end supports the handle. The strap wrench of claim 8, wherein the contact end of the actuating member is arc-shaped, an engaging portion is provided on the outer peripheral surface, and the engaging portion contacts the socket portion of the belt. The strap wrench as claimed in claim 1, wherein: a side wall of the handle is provided with a side hole, which communicates with the movable space; and the operation end of the actuating member passes through the side hole.

Images