TW201628800A - Pipe wrench engaging driving and locking structure - Google Patents

Abstract

This invention relates to a pipe wrench engaging driving and locking structure, wherein the front and rear sections of the driving handle are provided with a flat part and a grip part, respectively. The flat part is sleeved with a movable clamp body. A fixing element is arranged between the driving handle and the movable clamp body. The end portion of the flat part is provided with a coupling element, and the end part of the coupling element is provided with two shaft holes. An one-way bearing is arranged between the two shaft holes, and a screw and a nut are pivotally mounted to a swinging clamp body. Two gear racks are correspondingly provided between the end portion of the flat part and the swinging clamp body, respectively. In operation, the movable clamp body is first pushed toward the swinging clamp body to clamp the pipe, and then the fixing element is used to secure the movable clamp body, so that the movable clamp body cannot be loosened backward. Finally, the driving handle is wrenched to allow the two gear racks to rotate in the opposite direction, so as to make the swinging clamp body generate more tightly inward engaging action to clamp the pipe, which is the feature of the invention.

Description

Pipe wrench meshing drive locking structure

The present invention is directed to a pipe clamp engagement drive locking structure, primarily for use in the meshing drive and locking techniques of pipe wrenches.

Pressing tools commonly used for water pipes or water pipe joints, usually by water pipe clamps for water pipes or water pipe joints. Since water pipes have different pipe diameters, the water pipe clamps must also be capable of operating their jaws. The pipe clamp is conventionally composed of a first tong body and a second tong body which are pivoted together, and a spring-coupled toothed piece is pivoted inside the first tong body. And a blocking piece and a positioning block are respectively disposed on the inner side of the first caliper body and the second caliper body, wherein the blocking teeth of the blocking piece and the teeth of the toothed piece are ratchet-shaped with each other, and the tooth shape is formed The sheet is unidirectionally reversed toward the fixed portion.

However, the above-mentioned conventional water pipe clamp can not only clamp the pipe fitting tightly, but also does not install a safety switch when the actual operation is applied, so that the first caliper body and the second caliper body cannot be ensured during the process of clamping the pipe fitting. Will retreat, there are security concerns in operation, and there are problems and shortcomings that need to be overcome.

The inventor is currently engaged in the manufacture and design of related products, accumulated many years of practical experience and experience, and has actively invested in the spirit of innovation and improvement in response to the existing problems and lack of traditional conventional pipe wrenches. structure.

The technical means applied to solve the problem and the effect of the prior art are as follows: the front and rear sections of the driving handle are provided with a flat portion and a grip portion, and the flat portion is sleeved with a movable caliper body, the driving handle and the movable portion A fixing member is disposed between the tongs, and an end portion of the flat portion is provided with a coupling member, and an end portion of the coupling member is provided with a two-axis hole, and a one-way bearing is disposed between the two shaft holes, and a screw, An elastic component and a nut are pivotally disposed with a swinging caliper body, and a corresponding two gears are disposed between the end of the straight portion and the swinging caliper body, and a corresponding keyway is disposed between the one-way bearing and the screw, the screw A key is arranged in the keyway, so that the key of the screw can be slipped in the one-way bearing keyway, and a corresponding joint surface is provided between the shaft hole and the screw, and the elastic component is subjected to the elastic recovery The joint surface can be integrated with the shaft hole joint surface, and the key of the screw can be integrated with the key groove of the one-way bearing, and only the screw needs to be pulled outward, that is, the key of the screw can be separated from the one-way bearing. The first keyway combination makes The swinging caliper body can be pulled back to the original position. When the operation is performed, the movable caliper body is pushed toward the swinging caliper body to clamp the pipe member, and then the movable caliper body is fixed by the fixing component, so that the movable caliper body cannot be retracted backward, and finally the device is pulled. The handle is driven to rotate the two gears in the opposite direction, and the swinging caliper body produces an inwardly tighter gripping and clamping of the pipe member, which has an improvement in efficiency and is the main purpose of achieving it.

The above-mentioned pipe wrench engages and drives the locking structure, wherein: the driving handle is flat, and the grip portion of the driving handle is inclined upward by an appropriate angle (5°~10°), thereby increasing the torque, and the holding portion corresponds to four There are four undulating depressions at the finger, and the grip portion is provided with a circular curved surface corresponding to the tiger's mouth, so that the user can hold the driving handle tightly, and the grip portion corresponds to the front of the tiger's mouth. A flange is provided to prevent the user from sliding forward when shifting the force.

The above-mentioned pipe wrench engages and drives the locking structure, wherein the fixing component is provided with a plurality of ratchet teeth on the other side of the straight portion of the driving handle, and the movable caliper body corresponds to a plurality of ratchet teeth a slot is provided, the slot is configured to provide a ratchet, and the inner wall of the slot is provided with a notch corresponding to the ratchet, so that the ratchet can reveal the gap and the ratchet meshing transmission, and the slot hole is provided with a shaft hole at the center. For the purpose of wearing a shaft tube, the shaft hole and the shaft tube are provided with a cross section which can be combined with each other, and the center of the ratchet wheel is provided with a plurality of inner ratchet teeth, and the shaft tube is provided with a radial direction corresponding to the inner ratchet of the ratchet wheel. a hole for burying a steel ball, the other end of the shaft tube is provided with a slot seat and a receiving groove for receiving a second elastic component and a push rod, wherein the push rod is provided with a shallower corresponding to the radial hole And a deeper bead groove, when the shallow bead groove is aligned with the steel ball, the steel ball is exposed outside the radial hole to form a meshing state with the inner ratchet, and the ratchet cannot rotate, when the deeper bead When the groove is aligned with the steel ball, the steel ball is hidden in the radial hole and does not form a meshing state with the inner ratchet, so that the ratchet can be freely rotated.

1‧‧‧ pipe fittings

10‧‧‧Drive handle

11‧‧‧ Straight

12‧‧‧ grip

13‧‧‧Depression

14‧‧‧Arc surface

15‧‧‧Front

16‧‧‧ ratchet

17‧‧‧First gear

18‧‧‧ first joint hole

19‧‧‧First screw

20‧‧‧Connecting components

21‧‧‧Second junction hole

22‧‧‧ openings

23‧‧‧First shaft hole

24‧‧‧Second screw

25‧‧‧second nut

26‧‧‧Second keyway

27‧‧‧ keys

28‧‧‧ first joint

29‧‧‧Second junction

30‧‧‧Swing tongs

31‧‧‧Arc Department

32‧‧‧First tooth

33‧‧‧second gear

34‧‧‧ Fisheye

40‧‧‧Active Pliers

41‧‧‧ Groove

42‧‧‧ cover

421‧‧‧Perforation

43‧‧‧ screw holes

44‧‧‧through hole

45‧‧‧Vertical

46‧‧‧second tooth

47‧‧‧Slots

471‧‧‧ gap

48‧‧‧Axis hole

481‧‧‧ first section

50‧‧‧ ratchet

51‧‧‧ internal ratchet

60‧‧‧ shaft tube

61‧‧‧ tube body

62‧‧‧Second section

63‧‧‧ buckle groove

64‧‧‧radial holes

65‧‧‧Seat

66‧‧‧ accommodating slots

70‧‧‧Put

71‧‧‧ rod body

72‧‧‧The first bead

73‧‧‧second bead

74‧‧‧ Pressing Department

P‧‧‧Locking components

N‧‧‧ first nut

A‧‧‧ one-way bearing

A1‧‧‧ first keyway

Z1‧‧‧First elastic element

Z2‧‧‧Second elastic element

Y‧‧‧ buckle

R‧‧‧ steel ball

First Figure: A schematic diagram of a three-dimensional combination of the present invention.

Fig. 2 is an enlarged schematic view showing the three-dimensional decomposition of the present invention and the B portion, the F portion, the G portion, and the S portion.

Third drawing: A schematic view of the sectional combination of the present invention.

The fourth figure is a schematic diagram of the action of the ratchet wheel idling and pushing the movable tong body to clamp the pipe member.

Figure 5: Schematic diagram of the H-H section of the fourth figure.

Fig. 6 is a schematic view showing the action of the ratchet fixing of the present invention.

Figure 7: Schematic diagram of the T-T section of the sixth figure.

Figure 8 is a schematic view showing the action of pulling the driving handle by the present invention and biting the pipe member inward by the swinging pliers body.

Ninth view: The action diagram of the present invention is to disengage the second screw from the one-way bearing.

Figure 10: Schematic diagram of section E of the ninth figure.

Eleventh figure: The action diagram of the invention for pulling the swinging pliers outward to the original position.

Twelfth figure: is a schematic view of the M section of the eleventh figure.

In order to make the person skilled in the art familiar with the art easy to understand the structural contents of the present invention and the functional benefits that can be achieved, a specific embodiment will be listed and described in detail as follows: a pipe wrench engaging drive lock For the solid structure, please refer to the first figure: a schematic diagram of the three-dimensional combination of the present invention. 2 is an enlarged view of the three-dimensional decomposition and the B portion, the F portion, the G portion, and the S portion of the present invention. And the third figure is a schematic view of the sectional combination of the present invention. Mainly consists of: driving handle 10, coupling element 20, swinging caliper body 30, movable caliper body 40, ratchet wheel 50, shaft tube 60 and push rod 70; wherein: the driving handle 10 is flat, the driving handle The front section of the 10 is provided with a flat portion 11 for arranging a movable caliper 40. The rear portion of the driving handle 10 is provided with a grip portion 12, and the grip portion 12 is inclined upward by an appropriate angle (5°). ~10°), in order to increase the torsion, the grip portion 11 is provided with four undulating depressions 13 corresponding to the four fingers, and the grip portion 11 is provided with a circular curved surface 14 corresponding to the tiger's mouth for use. The driving handle 10 can be tightly gripped, and the grip portion 11 is provided with a flange 15 corresponding to the front of the tiger's mouth to prevent the user from sliding forward when the user applies the force. The front end of the driving handle 10 is provided on the front end. The first gear 17 is disposed in an arc shape, and a first coupling hole 18 is defined in the middle of the end surface of the driving handle 10. The first coupling hole 18 is configured to fix the first screw 19 to the first nut N. Element 20; the coupling element 20 has a U-shaped cross section, and the space inside the coupling element 20 is just Preferably, the end surface of the front end of the driving handle 10 can be sandwiched, and the rear side of the connecting component 20 corresponds to Two second coupling holes 21 are provided at the first coupling hole 18, and the first screw 19 is locked with the first nut N. The rear side of the coupling component 20 is provided with an opening 22, and the coupling is provided. Two first shaft holes 23 are disposed in front of the element 20, and a first bearing A is disposed between the two first shaft holes 23, and the two first shaft holes 23 are provided with a second screw 24 and a first elastic element Z1. A second nut 25 is pivotally fixed to a swinging caliper body 30. The inner ring of the one-way bearing A is provided with a first keyway A1. The outer diameter of the second screw 24 is corresponding to a second keyway 26 at the first keyway A1. The second key groove 26 of the second screw 24 is provided with a key 27 for sliding the key 27 in the first key groove A1 of the one-way bearing A, wherein two sides of the first shaft hole 23 are provided with two first sides. The second screw 24 has two second joint faces 29 corresponding to the two first joint faces 28, and the second screw 24 is under the elastic action of the first elastic member Z1. The second joint surface 29 can be integrated with the two first joint faces 28 of the first shaft hole 23 while allowing the key 27 of the second screw 24 to be coupled with the first key groove A1 of the one-way bearing A. The rocking caliper body 30 is provided with a circular arc portion 31 corresponding to the same side of the ratchet tooth 16, and the circular arc portion 31 can accommodate a tubular member 1 having a plurality of first tooth portions 32, in order to increase the bite force when clamping the pipe member 1, the swinging pliers 30 is provided with a second gear 33 arranged in a curved shape corresponding to the first gear 17 of the driving handle 10, and the swinging pliers 30 is allowed to be The second gear 33 can be in mesh with the first gear 17 of the driving handle 10, and the swinging jaw 30 is provided with a fisheye hole 34 corresponding to the first shaft hole 23 of the coupling member 20 as a one-way bearing A and The second screw 24 is disposed for pivoting; the rear of the movable caliper 40 is corresponding to the flat portion 12 of the driving handle 10; a recess 41 and a cover 42 are disposed, and the recess 41 can just slide through the driving handle The flat portion 11 of the recessed portion 41 and the two sides of the cover plate 42 are provided with three screw holes 43 and three through holes 44, and are locked and fixed by the three through holes 44 of the cover plate 42 by the three locking elements P. In the three screw holes 43 of the groove 41, the movable caliper 40 can be slidably displaced on the flat portion 11 of the driving handle 10 by the groove 41 corresponding to the circular arc of the oscillating weight body 30. The portion 31 is provided with a vertical portion 45. The vertical portion 45 is provided with a plurality of second tooth portions 46 for increasing the bite force when the tube member 1 is clamped. The driving handle 10 is disposed between the driving handle 10 and the movable jaw body 40. a fixing member which is provided with a plurality of ratchets 16 at the same side of the flat portion 11 of the driving handle 10 corresponding to the recessed portion 13, and a plurality of grooves 41 corresponding to the driving handle 10 of the movable caliper 40 The slotted teeth 16 are provided with a slot 47, and the slot 47 is provided with a ratchet 50. The inner wall of the slot 47 is provided with a notch 471 corresponding to the plurality of ratchets 16, so that the ratchet 50 can reveal the notch 471 and The plurality of ratchet teeth 16 are meshed and driven. The slot hole 47 is provided with a shaft hole 48 at the center for wearing a shaft tube 60. The shaft tube 60 is fastened by a buckle Y. The inner wall of the shaft hole 48 is provided with a first cross section 481 and is in a non-full circle state. The cover 42 is also provided with a through hole 421 corresponding to the shaft hole 48 as a shaft tube 60. The ratchet wheel 50 is meshed with a plurality of ratchet teeth 16 of the driving handle 10, and the ratchet wheel 50 is provided with a plurality of inner ratchet teeth 51 at the center for engaging with the steel ball R. The shaft tube 60 is used. A tube body 61 having an outer diameter corresponding to the inner diameter of the shaft hole 48 is disposed at one end. The outer wall of the tube body 61 is provided with a second section 62 corresponding to the first section 481 of the shaft hole 48, and the tube body 61 is disposed through the shaft hole. At 48 o'clock, the second section 62 and the first section 481 can be combined with each other to prevent the rotation of the shaft tube 60. The outer end of the tube body 61 is provided with a buckle groove 63 for fastening the buckle Y. The tube body 61 corresponds to the inner ratchet of the ratchet 50 A radial hole 64 is defined in the radial hole 64 for burying a steel ball R. The other end of the shaft tube 60 is provided with an outer diameter enlarged slot 65. The slot 65 is centrally provided with a receiving groove 66. The accommodating groove 66 can accommodate a second elastic member Z2 and a push rod 70. The push rod 70 has a rod body 71 having an outer diameter corresponding to the inner diameter of the tube body 61. The rod body 71 corresponds to the tube body 61. The radial hole 64 is provided with a shallow first bead groove 72 and a deeper second bead groove 73. When the shallow first bead groove 72 is aligned with the steel ball R, the steel ball R is exposed to the diameter. The outer portion of the hole 64 forms a meshing state with the inner ratchet 51. At this time, the ratchet 50 cannot rotate. When the deep second bead groove 73 is aligned with the steel ball R, the steel ball R is hidden in the radial hole 64. The inner ratchet 51 is in a engaged state, so that the ratchet 50 can be freely rotated, and the other end of the push rod 70 is provided with an outer diameter enlarged pressing portion 74.

The present invention, which is a combination of the above various components, provides a pipe wrench engagement drive locking structure, in practical application: please refer to the fourth figure: the ratchet idle and push the movable caliper of the present invention Schematic diagram of the action of clamping the pipe. And the fifth figure: is a schematic view of the H-H section of the fourth figure. First, the pressing portion 74 of the push rod 70 is pressed, so that the deep second bead groove 73 is aligned with the steel ball R. At this time, the steel ball R is hidden in the radial hole 64 and does not form a mesh with the inner ratchet 51. In a state where the ratchet 50 is freely rotatable, the movable caliper 40 is advanced toward the swinging caliper body 30, and the first tooth portion 32 of the swinging caliper body 30 is held together with the second tooth portion 46 of the movable caliper body 40. The outer wall of the pipe member 1 is housed.

Please refer to the sixth figure: a schematic diagram of the action of the ratchet fixing of the present invention. And the seventh figure: is a schematic diagram of the T-T section of the sixth figure. The pressing portion 74 of the push rod 70 is released such that the shallow first bead groove 72 is aligned with the steel ball R, and the steel ball R is exposed in the radial direction. The outer portion of the hole 64 forms a meshing state with the inner ratchet 51. At this time, the ratchet wheel 50 cannot rotate, and the movable caliper body 40 is prevented from loosening during the process of clamping the pipe member 1, thereby ensuring the safety of the operator.

Please refer to the eighth figure: the action diagram of the invention for pulling the driving handle and biting the pipe member inward by the swinging pliers body. The driving handle 10 is pulled downward, that is, the first gear 15 can be engaged to drive the second gear 33, and the oscillating caliper 30 can only be turned counterclockwise by the one-way rotation of the one-way bearing A. Rotating and not rotating outward in a clockwise direction allows the swinging jaw body 30 to produce a tighter snap inwardly to grip the tubular member 1.

Please refer to the ninth figure: the action diagram of the present invention is to disengage the second screw from the one-way bearing. And the tenth figure: is a schematic cross-sectional view of the E part of the ninth figure. When the pipe member 1 is released, it is only necessary to first pull the second screw 24 outward to disengage the key 27 of the second screw 24 from the first key groove A1 of the one-way bearing A.

Please refer to the eleventh figure: the action diagram of the invention for pulling the swinging pliers outward to the original position. And the twelfth figure: is a schematic view of the M section of the eleventh figure. Then, the swinging caliper body 30 is pulled back to the original position in a clockwise direction, and the swinging caliper body 30 is perpendicular to the driving handle 10, and finally the second screw 24 is released, and the elastic body of the first elastic member Z1 is released. Under the double action, the two second joint faces 29 of the second screw 24 can be integrated with the two first joint faces 28 of the first shaft hole 23, while the key 27 of the second screw 24 can be combined with the one-way. The first key groove A1 of the bearing A is integrated to restore the original one-way rotation, so that the swinging jaw body 30 can only rotate in the counterclockwise direction and cannot rotate outward in the clockwise direction.

In summary, the present invention provides a pipe wrench engagement drive locking structure, which is confirmed by the inventors after actual production and repeated operation tests. The functional benefits expected by the invention are also the "first creation" that has not yet been seen in the market. It has the "utility value of the industry". It is already in line with the establishment of the "practicality" and "progressiveness" of the invention patents. The provisions of the Patent Law apply for invention patents to the State Council.

10‧‧‧Drive handle

11‧‧‧ Straight

12‧‧‧ grip

13‧‧‧Depression

14‧‧‧Arc surface

15‧‧‧Front

16‧‧‧ ratchet

17‧‧‧First gear

18‧‧‧ first joint hole

19‧‧‧First screw

20‧‧‧Connecting components

21‧‧‧Second junction hole

22‧‧‧ openings

23‧‧‧First shaft hole

24‧‧‧Second screw

25‧‧‧second nut

26‧‧‧Second keyway

27‧‧‧ keys

28‧‧‧ first joint

29‧‧‧Second junction

30‧‧‧Swing tongs

31‧‧‧Arc Department

32‧‧‧First tooth

33‧‧‧second gear

34‧‧‧ Fisheye

40‧‧‧Active Pliers

41‧‧‧ Groove

42‧‧‧ cover

421‧‧‧Perforation

43‧‧‧ screw holes

44‧‧‧through hole

45‧‧‧Vertical

46‧‧‧second tooth

47‧‧‧Slots

471‧‧‧ gap

48‧‧‧Axis hole

481‧‧‧ first section

50‧‧‧ ratchet

51‧‧‧ internal ratchet

60‧‧‧ shaft tube

61‧‧‧ tube body

62‧‧‧Second section

63‧‧‧ buckle groove

64‧‧‧radial holes

65‧‧‧Seat

66‧‧‧ accommodating slots

70‧‧‧Put

71‧‧‧ rod body

72‧‧‧The first bead

73‧‧‧second bead

74‧‧‧ Pressing Department

P‧‧‧Locking components

N‧‧‧ first nut

A‧‧‧ one-way bearing

A1‧‧‧ first keyway

Z1‧‧‧First elastic element

Z2‧‧‧Second elastic element

Y‧‧‧ buckle

R‧‧‧ steel ball

Claims (5)

A pipe wrench engaging drive locking structure comprises at least: a driving handle, a coupling component, a swinging caliper body, a movable caliper body and a fixing component; wherein: a front portion of the driving handle is provided with a flat portion, and a rear portion of the driving handle is provided with a grip a first gear having an arc shape is disposed on an end surface of the front end of the driving handle, and a first coupling hole is disposed at an intermediate end of the front end of the driving handle, and the first coupling hole is provided for the first screw and the first screw The cap locking knot fixes a coupling component; the cross-section of the coupling component is U-shaped, and the space inside the coupling component is just clamped on the end surface of the front section of the driving handle, and the lower part of the coupling component corresponds to the first bonding hole There are two second coupling holes, which are used as the first screw and the first nut for locking. The rear side of the coupling element is provided with an opening, and the coupling element is provided with two first shaft holes. A unidirectional bearing is disposed between the shaft holes, and the two first shaft holes are configured to pivotally fix a swinging caliper body to a second screw and a second nut, and a second screw and the second nut are disposed between the second nut and the second nut First elastic element, The inner ring of the one-way bearing is provided with a first key groove, the second outer diameter of the second screw is corresponding to a second key groove, and the second key groove of the second screw is provided with a key, so that the key can be in the one-way bearing Sliding in the first keyway, wherein two sides of the first shaft hole are provided with two first joint faces, and the head of the second screw is provided with two second joint faces corresponding to the two first joint faces. Under the elastic action of an elastic member, the second joint surface of the second screw can be integrated with the first joint surfaces of the first shaft hole, and the key of the second screw can be combined with the one-way bearing The first keyway is integrated into the first gear; the second gear corresponding to the driving handle is provided with a second gear arranged in an arc shape, so that the second gear of the swinging caliper body can be coupled with the first gear of the driving handle Intermeshing, a second shaft hole is disposed at a rear of the swinging caliper body corresponding to the first shaft hole of the coupling element, as a one-way The bearing and the second screw are used for pivoting; the movable caliper body is provided with a groove and a cover plate corresponding to the straight portion of the driving handle, and the groove is just slidable through the flat portion of the driving handle The groove and the corresponding hole on the two sides of the cover plate are provided with a screw hole and a through hole, and are fixed in the screw hole of the groove by the second screw passing through the through hole of the cover plate, so that the movable caliper body can utilize the concave hole The groove is slidably displaced on the straight portion of the driving handle, and a fixing member is disposed between the driving handle and the movable caliper body, and the movable caliper is fixed by the fixing member. The pipe wrench engagement drive locking structure according to claim 1, wherein the driving handle has a flat shape, and the grip portion is inclined upward by 5 to 10 degrees. The pipe wrench engaging drive locking structure according to claim 1, wherein: the grip portion of the driving handle is provided with four undulating recesses corresponding to the four fingers, and the grip portion corresponds to the tiger's mouth. The utility model has a circular arc surface, so that the user can hold the driving handle tightly to facilitate the output. The grip portion has a flange corresponding to the front of the tiger's mouth to prevent the user from sliding forward when the user applies the force. The pipe wrench engagement drive locking structure according to claim 1, wherein: the corresponding portion of the swinging caliper body and the movable caliper body is provided with a circular arc portion and a vertical portion, and the circular arc portion and the vertical portion are provided with a plurality of The first and second teeth are used as a member for sandwiching a pipe. The pipe wrench engagement drive locking structure according to claim 1, wherein the fixing component is provided with a plurality of ratchet teeth on a side of the straight portion of the driving handle, and the groove of the movable caliper body corresponds to driving A plurality of slots are provided in the plurality of ratchets of the handle, the slot is configured to provide a ratchet, and the inner wall of the slot is provided with a notch corresponding to the plurality of ratchets, so that the ratchet can reveal the notch and engage with a plurality of ratchet teeth a shaft hole is provided in the center of the slot for the purpose of wearing a shaft tube, and the shaft tube is buckled by a buckle, and the inner wall of the shaft hole is provided with a first section and is in a non-full circle state. In order to prevent the rotation of the shaft tube, the cover plate is also provided with a perforation corresponding to the shaft hole, and is used for the shaft tube to be worn. The ratcheting system is meshed with a plurality of ratchet teeth of the driving handle. The ratchet wheel is provided with a plurality of inner ratchet teeth. One end of the shaft tube is provided with a tube body having an outer diameter corresponding to the inner diameter of the shaft hole, and the outer wall of the tube corresponding to the shaft The second section of the hole is provided with a second section, so that the tube body can be placed in the shaft hole and can be combined with the first section by the second section to prevent rotation of the shaft tube. The utility model has a buckle groove for fastening the buckle, wherein the pipe body is provided with a radial hole corresponding to the inner ratchet of the ratchet, the radial hole is for embedding a steel ball, and the other end of the shaft tube is provided with an outer diameter enlarged a socket, the accommodating slot is provided with a accommodating groove for accommodating a second elastic member and a push rod, and one end of the push rod is provided with a rod having an outer diameter corresponding to the inner diameter of the tube body, the rod The body corresponds to the radial hole of the pipe body and is provided with a shallow first bead groove and a deeper second bead groove. When the shallow first bead groove is aligned with the steel ball, the steel ball is exposed in the radial direction. The outer part of the hole forms a occlusal state with the inner ratchet, and the ratchet cannot rotate at this time, when the deep second bead groove and the steel Para position, the ball is not hidden in the radial bore formed in the inner ratchet engagement state, so that the ratchet is free to rotate, the other end of the push rod is provided with an enlarged outer diameter portion and pressing persons.