CN110548268A

CN110548268A - Wire clamping device

Info

Publication number: CN110548268A
Application number: CN201810549168.6A
Authority: CN
Inventors: 林家永
Original assignee: FENGYING Co Ltd
Current assignee: FENGYING Co Ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2019-12-10
Anticipated expiration: 2038-05-31
Also published as: CN110548268B

Abstract

the invention provides a wire clamping device, which comprises: a base body, on which a space and a channel are set, and between them a connecting hole is set; a transmission piece is arranged in the connecting hole in a penetrating way; a pulling mechanism including a pulling rod and a connecting rod; the connecting rod is pivoted on the pulling rod and is positioned in the channel, and the free end of the connecting rod faces to the transmission piece; a tightening mechanism, which is accommodated in the space by an actuating block, and the actuating block is connected with a clamping block; the wire clamping mechanism is arranged on the seat body, the top of the wire clamping mechanism is provided with a wire clamping piece for clamping a racket wire, when the pulling mechanism is pressed downwards to enable the pulling rod, the connecting rod and the driving piece to act on the same straight line, the driving piece can support the pressing mechanism to form a limiting and fixing structure, the pressing force is in accordance with ergonomics, and the pressing force at each time is fixed and cannot be excessively pressed.

Description

Wire clamping device

Technical Field

The present invention relates to a racket stringing device, and more particularly, to a string clamping device which is easy to operate and has a stable tightening force.

Background

The joy of badminton and tennis is that the requirement of the user for the racket is relatively raised, and the situation that the racket strings are arranged on the racket surface is important. Referring to fig. 1, a conventional racket stringing device is disclosed, in which a racket string is threaded through a racket frame, and then the racket string is clamped and fixed by a string clamping device 90, the string clamping device 90 is movable and fixed on a rail 91 of the racket stringing machine, the string clamping device 90 clamps the racket string tensioned by a predetermined weight by a string clamping member 92, and then the string clamping member 92 clamping the racket string is released, and the string clamping device 90 is moved to the next position to clamp the racket string.

The thread clamping device 90 needs to be fixed on the track 91 when clamping the racket thread in the threading process, but needs to be capable of freely sliding on the track 91 to adjust the thread clamping position when the thread clamping position is changed after the pound number of the racket thread is adjusted; therefore, the conventional wire clamper is provided with a knob 93, the bottom of the knob 93 is provided with a cam or a screw, and the position of the cam or the screw is adjusted by rotating the knob 93 arranged on the wire clamper 90 left and right, so that the bottom of the wire clamper 90 can be clamped on the rail 91 to form a position pressing, or the bottom of the wire clamper 90 can not be clamped on the rail 91 and can move freely.

However, in operation, the string clamping member 92 is usually clamped on the racket string to fix the clamping position, and then the string clamping member 92 is released to rotate the knob 93 to fix the string clamping device 90, at this time, since the string clamping device 90 is not yet forced to be fixed, the position of the string clamping device 90 is easily changed due to mistaken touch when the string clamping member 92 is released, so that the clamping position needs to be readjusted; in addition, in order to make the wire clamping device 90 force the fixing rail 91 not to be separated, the user usually rotates the knob 93 with the index finger and thumb; since the wire grip 90 needs to be fixed and loosened many times during the threading process, the user is likely to suffer from a burden and muscle injury in the hand of the user after long-term use. Furthermore, if too much force is applied when the knob 93 is rotated, the cam or screw engaged with the knob 93 will be too tight to the track 91, and it will take too much force and time to release the knob 93, resulting in a decrease in threading efficiency. Therefore, how to fix and release the wire clamp 90 to and from the rail easily and keep a good fixing effect is a long-standing problem in the technical field and market.

Disclosure of Invention

The invention aims to provide a thread clamping device, which has the advantages that the operation of tightening the thread clamping device accords with the human engineering, the operation is easy, the labor is saved, the thread clamping mechanism can be moved and the pulling mechanism can be pressed down by applying force, the tightening force locked on a track of a racket threading machine is fixed, and the thread clamping device cannot be over-tightened or over-loosened and cannot be released difficultly due to over-tightening.

In order to achieve the purpose, the invention discloses a wire clamping device, which is characterized by comprising:

The base is provided with a space penetrating through the bottom surface of the base and a channel, and the channel is communicated with the space through a connecting hole;

A transmission piece, which can be glidingly arranged in the connecting hole in a penetrating way, and two ends of the transmission piece respectively face the channel and the space;

A pulling mechanism including a pulling rod and a connecting rod; one end of the pulling rod is a pivot joint end which is pivoted with the seat body, the other end of the pulling rod is a pulling part, and the pivot joint end of the pulling rod is provided with a pivot joint point and can swing around the pivot joint point; one end of the connecting rod is a pivoted end which is pivoted on the pulling rod, and the free end of the connecting rod is positioned in the channel and faces the transmission piece; when the pulling part of the pulling rod swings downwards, the connecting rod is linked, and the free end of the connecting rod drives the transmission piece to move towards the space;

A tightening mechanism including an actuating block and a clamping block; the actuating block is accommodated in the space and is supported by the transmission part to lift in the space; the clamping block is positioned outside the seat body and connected with the actuating block so as to lift along with the actuating block;

The wire clamping mechanism is arranged on the seat body, and a wire clamping piece is arranged at the top of the wire clamping mechanism.

Wherein: further comprises the following steps: and the auxiliary pulling group is provided with an auxiliary pulling rod which is pivoted on the seat body, one end of the auxiliary pulling rod is a force application part, the other end of the auxiliary pulling rod is a pushing part, and the pushing part corresponds to the pulling part of the pulling rod, so that when the pulling part of the auxiliary pulling rod is controlled, the pushing part upwards pushes the pulling part of the actuating rod.

Wherein: further comprises the following steps: an elastic component, the elastic component is arranged on the auxiliary lever, when the auxiliary lever is not stressed, the pushing part of the auxiliary lever is far away from the pulling part of the lever.

wherein: the other end of the seat body opposite to the space is provided with a containing groove communicated with the channel; the pulling rod is provided with a pressing part in a protruding way at the tail end of the pivoting end, and the pressing part is arranged in the containing groove; the wire clamping mechanism is arranged on the accommodating groove by a hollow seat tube, the bottom of the wire clamping piece is provided with a rod body, the rod body is arranged in the seat tube in a penetrating way, and when the wire clamping piece can slide and is not lifted, the bottom of the rod body can press the pressing part.

Wherein: the bottom of the containing groove is provided with an adjusting piece, and the height of the adjusting piece in the containing groove is adjusted; when the pulling rod swings, the pressing part touches the top end of the adjusting piece.

Wherein: the rolling element is arranged at the free end of the connecting rod; the free end of the connecting rod drives the transmission member with the rolling element.

Wherein: when the pulling part of the pulling rod swings downwards, a dead point is formed, and when the pulling rod is positioned at the dead point of the swinging, the pivot point of the pulling rod and the pivot end of the connecting rod form a straight line with the free end.

Wherein: the rolling element is pivoted to the free end of the connecting rod by a pivot pin; when the pulling part of the pulling rod swings downwards, a dead point is formed, and when the pulling rod is positioned at the dead point of the swinging, the pivot point of the pulling rod, the pivot end of the connecting rod and the pivot pin form a straight line.

Wherein: the bottom of the passage is provided with a pad body, and the rolling element is positioned on the pad body.

Wherein: an elastic element is arranged in the channel of the seat body, and the elastic element generates an elastic force on the pulling rod, so that the pulling part is kept upward under the action of the elastic force.

Therefore, when the wire clamping mechanism of the wire clamping device clamps the wires, the pulling part can be pressed downwards at the same time, so that the connecting rod can push the transmission piece to move transversely and push the actuating block to ascend, when the acting forces of the pivoting end, the connecting rod and the transmission piece are collinear, the pulling mechanism forms fixing, the seat body and the clamping block can be forced to be fixed on a track, and the pulling part applies force downwards to accord with ergonomics; when the wire clamping mechanism is pushed up, the pulling mechanism can be pressed downwards with the palm, so that the displacement is not easy to cause and the operation is convenient; in addition, when the pulling mechanism is pressed down each time, the fixed force of the tightening device is the same, and the problem of excessive force application is avoided.

Drawings

To further clarify the objects, features and advantages of the present invention, a better understanding of the present invention will be obtained by reference to the following detailed description of a preferred embodiment when considered in connection with the accompanying drawings, in which:

FIG. 1: a wire clamping device is disclosed.

FIG. 2: a perspective view of a wire gripper according to a preferred embodiment of the present invention.

FIG. 3: the wire clamping device is in a three-dimensional exploded view.

FIG. 4: the cross-sectional view taken along line 4-4 of fig. 2 shows the wire clamp in an unlocked state.

FIG. 5: the action diagram of locking the wire clamp by pressing the pulling rod with the palm is shown.

FIG. 6: displaying the action diagram of releasing the locking state of the wire clamping device by pulling the rod.

FIG. 7: the action diagram of releasing the locking state of the wire clamping device by the auxiliary lever is displayed.

FIG. 8: the action diagram of releasing the locking state of the wire clamping device by the wire clamping mechanism is displayed.

FIG. 9: a schematic view of the adjustable length of the transmission member is shown.

FIG. 10: fig. 4 is a partially enlarged view showing the adjustment of the rising stroke of the pulling lever by the adjustment member.

Detailed Description

referring to fig. 2 to 4, a string gripper 10 of a racket stringing device according to a preferred embodiment of the present invention includes:

A base 20, which is sequentially provided with a space, a channel 22 and a receiving slot 23 from one end to the other end, wherein the space is a tapered hole 21 with a wide top and a narrow bottom in the preferred embodiment, and the tapered hole at least penetrates through the bottom surface of the base 20; the channel 22 is communicated with the conical hole 21 through a connecting hole 24, the channel 22 is close to the side of the containing groove 23 and is provided with a pivot hole 25, and the axis direction of the pivot hole 25 and the connecting hole 24 is generally vertical; a pad 221 and an elastic element 222 are disposed at the bottom of the channel 22, the pad 221 is made of a material with low friction force, and the top surface thereof is flat; the elastic element 222 is a compression spring; the receiving groove 23 communicates with the passage 22 by a groove 232; an adjusting member 231, which is an adjusting screw, screwed to the bottom of the accommodating groove 23 to adjust the height thereof; a cover plate 26 covering the base 20 and covering the tapered hole 21 and the channel 22; a through groove 261 is formed on the cover plate 26.

A transmission member 30 passing through the connection hole 24 and slidably having two ends respectively protruding into the tapered hole 21 and the channel 22, wherein the transmission member 30 includes a bevel block 31 and an arc block 32 in this embodiment; the inclined plane block 31 is arranged close to the tapered hole 21, the end surface of the inclined plane block 31 facing the tapered hole 21 is an inclined plane 311, the center of the inclined plane block 31 is provided with a screw hole 312, an adjusting element 33 is screwed into the screw hole 312, the adjusting element 33 can be a screw, and the screw hole 312 can rotate to adjust the length of the screw protruding out of the end surface of the inclined plane block 31; the other end of the adjustment member 33 contacts the shoe 32. The cambered surface 32 is arranged close to the channel 22, and the end surface facing the channel 22 is a cambered surface 321. The slant block 31 and the arc block 32 are connected by the adjusting element 33, and the length of the transmission member 30 can be adjusted.

A pulling mechanism 40, which comprises a pulling rod 41 and a connecting rod 42; one end of the pulling rod 41 is a pivot end 411, and the other end forms a pulling portion 412, the through slot 261 of the cover plate 26 allows the pulling rod 41 to pass through, so that the pulling portion 412 is located outside the cover plate 26; one end of the connecting rod 42 is a pivot end, a shaft 421 is pivoted to the shaft of the pulling rod 41, and the pivot position is a rotation pivot, and the pivot position of the pivot end of the connecting rod 42 is located between the pivot end 411 of the pulling rod 41 and the pulling part 412. The pivoting end 411 of the pulling rod 41 is pivoted to the pivot hole 25 of the base 20 by a pin 414, so that the pulling rod 41 can swing around the pivoting end 411 as an axis on the base 20; a pressing portion 415 is protruded from the end of the pivoting end 411, and the pressing portion 415 extends into the accommodating groove 23; one end of the elastic element 222 located in the channel 22 is sleeved on the projection 416 of the pulling rod 41, and the elasticity thereof can keep pushing the pulling rod 41 upwards; a rolling element 43 pivotally mounted on the free end of the connecting rod 42 by a pivot pin 431 and accommodated in the channel 22, wherein the rolling element 43 can roll on the pad 221 and contact the arc block 32 at one end of the transmission member 30. The connecting rod 42 is formed by two parallel cantilevers 422 in this embodiment, and one end of the two cantilevers 422 is pivoted to two sides of the shaft 421; the rolling element 43 is pivotally mounted at the free end of the two suspension arms 422 by the pivot pin 431, and the rolling element 43 is a roller in this embodiment; the pad 221 can reduce the friction force of the roller, and the outer circumference of the rolling element 43 is pressed against the arc 321 of the transmission member 30.

A tightening mechanism 50 including an actuating block and a clamping block 52; the actuating block is a tapered block 51 in the embodiment, which is accommodated in the tapered hole 21 (space) and can be driven by the transmission member 30 to perform an ascending and descending motion, and a connecting rod 511, which is a screw rod, protrudes from the bottom of the actuating block, and the clamping block 52 is screwed on the connecting rod 511.

A thread clamping mechanism 60, which is assembled and connected to the accommodating groove 23 by a hollow seat tube 61, a thread clamping piece 62 is sleeved on the seat tube 61, a rod body 621 is fixedly arranged at the bottom end of the thread clamping piece 62, and the rod body 621 is sleeved in the seat tube 61 and can slide up and down. The length of the shaft 621 is greater than that of the seat tube 61, so that when the wire clamping member 62 is not pushed up, the bottom of the shaft 621 can press the pressing part 415 of the pulling rod 41; the wire clamping member 62 is provided with two opposite clamping jaws 622 and a rotating lever 623, the rotating lever 623 can rotate to adjust the gap between the clamping jaws 622, when the gap between the clamping jaws 622 becomes smaller, the racket wire can be clamped relatively, the wire clamping mechanism 60 is a conventional structure, and is not the research and development focus of the present invention, and will not be described again.

a secondary wrench set 70, which comprises a shaft connecting block 71, a secondary wrench rod 72 and at least one elastic member 73; the shaft connecting block 71 is fixed on the top surface of the seat 20, and it can also be formed by directly and integrally forming the seat 20; the secondary trigger lever 72 is pivotally connected to the lug 711 of the shaft connecting block 71 by a plurality of pivot members 723, and the secondary trigger lever 72 can be rotated, one end of the secondary trigger lever 72 is a force application portion 721, the other end is a pushing portion 722, the pushing portion 722 is located on the same side as the pulling portion 412 of the trigger lever 41 and is located below the pulling portion 412; the urging portion 721 of the sub-lever 72 is located on a different side from the pulling portion 412 of the pulling lever 41; the elastic member 73 is disposed between the secondary lever 72 and the seat body 20, and the elastic force thereof elastically acts on the secondary lever 72, so that the force application portion 721 of the secondary lever 72 always tilts upward and the pushing portion 722 keeps downward. The secondary trigger lever 72 of the present embodiment has two parallel plates, and each plate is pivoted to the lug 711 of the pivot block 71 by a pivot member 723. The pushing portion 722 of the secondary trigger 72 is located below the pulling portion 412 as two legs in this embodiment. In the present embodiment, the two elastic members 73 are torsion springs, and have an annular body and two legs, the annular body is sleeved on a pivot 723, as shown in the third drawing, and the two legs respectively abut against the seat 20 and the secondary trigger 72, and the elastic force of the two elastic members 73 pushes up the force application portion 721 to move the pushing portion 722 downward.

In addition, a first cover 46 and a second cover 76 respectively cover the pulling portion 412 of the pulling rod 41 and the force application portion 721 of the secondary pulling rod 72 for the sake of aesthetic appearance and convenience for pressing the pulling rod 41 and the secondary pulling rod 72. The reference numerals for the two covers 46, 76 are only indicated in fig. 3 and 4.

The thread tension device 10 of the present invention is installed to a rail 80 of a racket stringing machine (not shown) so as to clamp racket threads by the thread tension mechanism 60 when stringing a racket. The rail is provided with a sliding slot 81, and the connecting rod 511 of the tightening mechanism 50 is inserted into the sliding slot 81 and then is screwed with the clamping block 52 in the opposite direction. The operation mode of the string clamping mechanism 60 for clamping the racket string is not the main subject of the present invention, and will not be described in detail.

Referring to fig. 2 and fig. 4, a state of the wire holder 10 not being locked on the rail 80 is shown, at this time, the pulling portion 412 of the pulling rod 41 of the pulling mechanism 40 is tilted upward, the clamping block 52 of the tightening mechanism 50 still has a gap with the bottom surface of the rail 80, and does not tighten the rail 80, so that the wire holder 10 is in a release state, and can freely slide on the rail 80 and adjust the position.

to fix the string clamping device 10 on the track 80, referring to fig. 5, after the pulling mechanism 40 is pressed down, the pulling rod 41 will push the transmission member 30, so that the transmission member 30 can push the tapered block 51, the tapered block 51 pulls up the connecting rod 511 and the clamping block 52, so that the clamping block 52 and the bottom of the seat 20 are forced to be fixed on the track 80, and then the string clamping mechanism 60 is used to clamp the strings of the racket.

Specifically, as shown in fig. 5, when the user presses the pulling portion 412 of the pulling rod 41 with the palm of the hand, the pulling portion 412 will swing downward around the pivot end 411 as the axis and drive the connecting rod 42 to swing the connecting rod 42, the free end of the connecting rod will generate a displacement toward the transmission member 30, the connecting rod 42 will push the transmission member 30 toward the tapered hole 21 via the rolling element 43, the rolling element 43 is in rolling contact with the arc block 32, so as to increase the smoothness of the transmission member 30 pushed by the rolling element, and when the free end of the connecting rod 42 displaces, the rolling element 43 will rotate on the pad 221. When the connecting rod 42 pushes the transmission member 30, the inclined surface block 31 moves in the tapered hole 21, the inclined surface 311 pushes the tapered block 51 to generate an upward displacement, so that the tapered block 51 drives the clamping block 52 to move upward via the connecting rod 511, thereby reducing the gap between the clamping block 52 and the bottom of the seat 20 and enabling the clamping block 52 to press the bottom surface of the rail 80. When the pulling portion 412 is displaced to the end of the urging stroke, the pivot point of the pivot end 411 of the pulling rod 41 (i.e. the center of the pin 414) and the two ends of the connecting rod (i.e. the center of the shaft 421 and the center of the pivot pin 431) are located on a straight line L. By the design of the three pivot points being in line, the wrench mechanism 40 forms a stable locking effect at the end of the downward stroke without releasing, and stably and quantitatively tightens the driving member 30 and the tightening member 50, so that the tightening member 50 quantitatively tightens the rail 80, i.e. the tightening position of the clamping block 52 is fixed, therefore, in each tightening operation, the wrench mechanism 40 and the tightening mechanism 50 both form a locking effect, and the stroke of the connecting rod 42 pushing the driving member 30 is fixed, the height of the driving member 30 pushing the conical block 51 upwards is also fixed, so that the clearance and force of each tightening between the clamping block 52 and the seat body 20 are fixed. The elastic element 222 is pressed by the pulling rod 41 to store an elastic force.

to relieve the tension on the gripper 10, the present invention provides three methods. First, referring to fig. 6, an operator can pull the pulling portion 412 of the pulling rod 41 upward to make the pivot point of the pivot end 411 of the pulling rod 41 (i.e. the center of the pin 414) and the two ends of the connecting rod 42 (i.e. the center of the shaft 421 and the center of the pivot pin 431) be out of the same line, the locking state of the pulling mechanism 40 is released, and once the pulling rod 41 moves upward, the elastic element 222 exerts an elastic reaction force to push the pulling rod 41 upward rapidly; after the pulling rod 41 moves upward, the connecting rod 42 and the rolling element 43 are linked to move away from the driving member 30, so that the inclined surface block 31 of the driving member 30 does not apply a force to abut against the tapered block 51, the tapered block 51 slides downward due to its own weight and pushes the driving member 30 toward the channel 22, the clamping block 52 arranged on the connecting rod 511 also descends, the rail 80 is not pressed, and the wire clamp 10 returns to the release state and can move on the rail.

Referring to fig. 7, a second way of releasing the locking state of the wire clamper 10 according to the present invention is shown, as shown in the figure, when the wire clamper 10 is in the locking state, the operator can press down the force application part 721 of the secondary plate rod 72 of the secondary pulling group 70 to tilt up the pushing part 722 at the other end thereof, and when the pushing part 722 pushes up, the pulling part 412 of the pulling rod 41 is pushed up to move up the pulling part 412 to release the locking state of the pulling mechanism 40, and the state returns to fig. 4, and the clamping block 52 of the tightening mechanism 50 does not tighten the rail 80. After releasing the force applied to press the secondary trigger 72, the elasticity of the two elastic members 73 can make the force applying portion 721 move upward and the pushing portion 722 move downward, so that the secondary trigger 72 returns to the state shown in fig. 4 for reuse.

Referring to fig. 8, a third mode of the present invention is to release the locking state of the wire holder 10. When the operator wants to move the string clamping mechanism 60 to clamp the other positions of the racket string, the string clamping member 62 is first released, so that the string clamping member 62 no longer clamps the racket string, and the string clamping member 62 is released, so that the string clamping member 62 falls down by gravity, and the bottom end of the shaft 621 strikes the pressing portion 415 of the pulling rod 41 located in the accommodating groove 23, and further the pulling rod 41 is driven to swing, so that the end 412 moves upward. This operation also moves the pulling portion 412 of the pulling rod 41 upward to separate the three pivot points from the collinear state, thereby releasing the wire clamp 10 to move the wire clamp again.

In addition, referring to fig. 9, the adjusting element 33 of the transmission member 30 can be adjusted in position in the screw hole 321 to change the length of the transmission member 30, when the length of the transmission member 30 is increased, the conical block 51 is pushed to a higher height relatively during pushing, so that the clamping tightness of the clamping mechanism 50 can be increased, and when the length of the transmission member 30 is decreased relatively, the rising height of the conical block 51 is decreased while the rising distance of the clamping block 52 is decreased.

Referring to fig. 10 again, the operator can adjust the height of the adjusting element 231 in the receiving slot 23, so that the bottom of the pressing portion 415 of the pulling rod 41 is limited, and the rising height of the pulling portion 412 is limited; thus, the height of the adjusting member 231 can be adjusted as required to change the rising height of the pulling portion 412.

According to the wire clamping device provided by the invention, the pulling mechanism 40 adopts the operation of pressing up and down, the pulling rod 41 can be used for applying force to press down by palm, the force application conforms to ergonomics, no muscle injury is caused after long-time use, and the operation is labor-saving and convenient; in addition, when the pulling mechanism 40 applies a downward force each time, the force applied by the connecting rod 42 to the transmission member 30 to push against the pressing mechanism 50 is fixed, and the situation of locking or incapability of releasing due to excessive force application is avoided; when releasing the fixing, the pulling mechanism 40 can be released by three different ways, such as pulling the pulling rod 41 upwards, pressing the auxiliary pulling rod 72 downwards or putting down the wire clamping member 62, so that the operation can be selected according to the current operation condition or personal use habit, and the operation is convenient.

the structure design of the wire clamping device of the invention provides an innovative operation mode, which is different from the operation mode of a rotating knob of a conventional wire clamping device and solves the defects of the conventional wire clamping device.

The embodiments disclosed above are illustrative of the invention rather than limiting, and all equivalent modifications of the invention should be considered to be within the scope of the invention. The thread clamping device provided by the invention is the technology initiated in the technical field, has improvement and is applied by the method.

Claims

1. A cable clamp, comprising:

2. The wire gripper of claim 1, further comprising: and the auxiliary pulling group is provided with an auxiliary pulling rod which is pivoted on the seat body, one end of the auxiliary pulling rod is a force application part, the other end of the auxiliary pulling rod is a pushing part, and the pushing part corresponds to the pulling part of the pulling rod, so that when the pulling part of the auxiliary pulling rod is controlled, the pushing part upwards pushes the pulling part of the actuating rod.

3. The wire gripper of claim 2, further comprising: an elastic component, the elastic component is arranged on the auxiliary lever, when the auxiliary lever is not stressed, the pushing part of the auxiliary lever is far away from the pulling part of the lever.

4. The wire gripper of claim 1, wherein: the other end of the seat body opposite to the space is provided with a containing groove communicated with the channel; the pulling rod is provided with a pressing part in a protruding way at the tail end of the pivoting end, and the pressing part is arranged in the containing groove; the wire clamping mechanism is arranged on the accommodating groove by a hollow seat tube, the bottom of the wire clamping piece is provided with a rod body, the rod body is arranged in the seat tube in a penetrating way, and when the wire clamping piece can slide and is not lifted, the bottom of the rod body can press the pressing part.

5. the wire gripper of claim 4, wherein: the bottom of the containing groove is provided with an adjusting piece, and the height of the adjusting piece in the containing groove is adjusted; when the pulling rod swings, the pressing part touches the top end of the adjusting piece.

6. The wire holder as claimed in claim 1, further comprising a rolling element provided at a free end of the connecting rod; the free end of the connecting rod drives the transmission member with the rolling element.

7. the wire clamper according to any one of claims 1 to 6, wherein the pulling portion of the pulling rod has a dead point when swinging downwards, and when the pulling rod is located at the dead point of swinging downwards, the pivot point of the pulling rod and the pivot end and the free end of the connecting rod form a straight line.

8. A chuck as claimed in claim 6, wherein said rolling element is pivotally connected to the free end of said link by a pivot pin; when the pulling part of the pulling rod swings downwards, a dead point is formed, and when the pulling rod is positioned at the dead point of the swinging, the pivot point of the pulling rod, the pivot end of the connecting rod and the pivot pin form a straight line.

9. The wire gripper of claim 6, wherein: the bottom of the passage is provided with a pad body, and the rolling element is positioned on the pad body.

10. the wire gripper of claim 1, wherein: an elastic element is arranged in the channel of the seat body, and the elastic element generates an elastic force on the pulling rod, so that the pulling part is kept upward under the action of the elastic force.