TWM507822U - Improved structure for clamping vise - Google Patents

Description

Fixture structure improvement

This creation is about a fixture structure, especially a fixture structure that can improve its clamping and fixing effect.

According to a conventional spring clip improved structure, as shown in FIG. 8, the spring clip 40 structure includes a link 41 on which a pivotable fulcrum 411 is positioned on the spring clip 40. The inside of the connecting rod 41 defines a through hole 412; a piece 42 is fixed inside the spring clip 40 above the connecting rod 41, and has a hole 421 which can be vertically penetrated thereon; The spring 43 is disposed between the connecting rod 41 and the seat piece 42. The upper end of the shaft 43 is positioned at the handle of the spring clip 40, and the lower end thereof can be respectively inserted into the aperture 421 of the seat piece 42, the compression spring 43 and The through hole 412 of the connecting rod 41 can push the connecting rod 41 through the compression spring 43 when clamping, so that the through hole 412 of the connecting rod 41 is obliquely engaged with the shaft body 44, and the clamping of the spring clip 40 can be achieved. Fixed effect, but the above-mentioned conventional structure is not difficult to find that there are still some shortcomings, the main reasons are as follows: (1) The compression spring 43 is directly sandwiched between the connecting rod 41 and the seat piece 42, That is, the compression spring 43 is directly pressed at the through hole 412 of the connecting rod 41, so that the compression spring 43 can only The elastic force of the body forms the inclination of the through hole 412, and the compression spring 43 is sleeved on the shaft body 44, and the forward thrust and the reverse thrust are simultaneously generated for the connecting rod 41, which further reduces the pressing effect, and is obviously present. The lack of top thrust is insufficient, so that the connecting rod 41 is easy to slide and cannot be stably clamped; (2) the compression spring 43 is interposed between the connecting rod 41 and the seat piece 42 and is penetrated by the shaft body 44 during assembly. The compression spring 43 is first sleeved on the shaft body 44, and the compression spring 43 is further pressed to allow the through hole 412 of the connecting rod 41 to be sleeved with the shaft body 44 and pivoted at the handle of the spring clip 40 by the fulcrum 411. It is not easy to assemble, and because the assembly space of the compression spring 43 is narrow, it is also impossible to replace the compression springs 43 of different wire diameters, outer diameters and lengths according to the use requirements; (3) the shaft body 44 is pivotally connected to the spring clip 40 At the handle, and extending the connecting rod 41 in a straight rod shape, so the shaft body The short distance between the pivot joint of the 44 spring clip and the spring clip 40 will limit the maximum opening degree of the spring clip 40 and shorten the sliding stroke of the shaft body 44, resulting in lower precision of the clamping and fixing, and increasing the spring clip. 40. The amount of retraction when the card is stuck; (4) The through hole 412 of the connecting rod 41 needs to have sufficient rigidity to clamp the shaft body 44 obliquely so as not to have a reaming or cracking, so the connecting rod 41 The whole must be made of a metal material, which will increase the production cost due to the metal material; (5) the connecting rod 41 protrudes from the outside of the handle of the spring clip 40, so that when the user operates the spring clip 40, it is easy to accidentally touch the connecting rod 41. However, the function of releasing the clamping and fixing has a problem that the clamping stability is insufficient.

Another conventional spring clip improved structure, as shown in FIG. 9, the spring clip 50 includes: an upper clamp 51, the upper clamp 51 integrally forms a lower handle 511; a lower clamp 52, the lower clamp The upper 52 is integrally formed with the upper handle 521, and the upper and lower clamps 51 (52) are mutually staggered, and are pivotally connected by the pivoting member 53 at the staggered position; a first elastic member 54 is disposed on the upper elastic member 54. And the lower handle 511 (511) between the pivoting member 53, and the two hook members 541 (542) extending from the pivoting member 53 respectively buckle against the inner surface of the upper and lower handles 511 (511); a pull rod 55, the One end of the pull rod 55 is pivotally disposed on the inner surface of the lower clamp 52 by a pin 551, and the free end of the pull rod 55 passes through the lower handle 511, and then the pull rod 55 is penetrated through a second elastic member 56; an actuating plate 57 is disposed at the lower handle On the inner surface of the 511, a positioning pin 58 is fixed on the lower handle 511. The positioning pin 58 just abuts against the curved portion of the actuating plate 57. The actuating plate 57 defines a latching hole 571 for providing the through rod 55 for the clip. The holding plate 57 can be pushed obliquely through the second elastic member 56, so that the locking hole 571 of the actuating plate 57 and the pull rod 55 are obliquely engaged, and the clamping effect of the spring clip 50 can be achieved. However, it is not difficult to find out that the above-mentioned conventional structure has some shortcomings. The main reasons are as follows: (1) The second elastic member 56 is directly sandwiched between the actuating plate 57 and the lower handle 511. The second elastic member 56 is directly pressed against the locking hole 571 of the actuating plate 57, so that the second elastic member 56 can only form the inclination of the locking hole 571 by its own elastic force, and the second elastic member 56 is The sleeve is sleeved on the pull rod 55, and the pull rod 55 simultaneously generates the forward thrust and the reverse thrust, and the pressure reduction effect is reduced, and the lack of the top thrust is obviously insufficient, so that the pull rod 55 is easy to slide and cannot be stably clamped; (2) The second elastic member 56 is interposed between the actuating plate 57 and the lower handle 511, and is penetrated by the pull rod 55. The second elastic member 56 is first sleeved on the pull rod 55 during assembly, and then pressed further. The second elastic member 56 allows the locking hole 571 of the actuating plate 57 to be sleeved and pressed against the positioning pin 58. Therefore, there is a lack of assembly, and the assembly space of the second elastic member 56 is also small. Cannot be replaced with different wire diameters, outer diameters and lengths The second elastic member 56; (3) the pull rod 55 is pivotally connected to the lower jaw 52 of the spring clip 50, and extends through the snap hole 571 of the actuating plate 57 in a straight rod shape, so the pin of the pull rod 55 The short distance between the rod 551 and the pivoting member 53 of the spring clip 50 will limit the maximum opening of the spring clip 50 and shorten the sliding stroke of the pull rod 55, resulting in lower precision of clamping and fixing, and increasing the spring clip. 50. The amount of retraction when the card is stuck; (4) The locking hole 571 of the actuating plate 57 needs to have sufficient rigidity to obliquely clamp the rod 55 so as not to have a reaming or cracking, so the actuating plate 57 The whole must be made of metal materials, which will increase production costs due to metal materials.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the author has finally achieved a practical and practical creation.

The technical problem to be solved by the present invention is to provide an improved fixture structure in view of the above-mentioned shortcomings existing in the prior art.

The clamp comprises a first clamping arm, a second clamping arm, a shaft and a torsion spring. The torsion spring is sleeved on the shaft and is pivoted by the shaft to the middle of the first clamping arm and the second clamping arm. And the torsion spring extends a front end rod portion and a rear end rod portion, and the torsion spring is fastened to the second clamping arm by the front end rod portion, and is fastened by the rear end rod portion to the first clamping arm, and the first The clamping arm is integrally formed with a first grip, and a connecting rod is connected to the first clamping arm, and the second clamping arm is integrally formed with a second grip, and the second grip is internally formed with an opening facing the first grip. The shank of the shank is provided with a connecting rod at the opening of the hollow slot, and the second handle is embedded with a metal member on the outer surface, and a through hole is penetrated through the metal member, and the through hole is used for the connecting hole a rod, one end of which is connected to the connecting rod of the first clamping arm, wherein the first clamping arm defines a fixing hole, and the connecting rod is inserted and fixed at the fixing hole, and is pivoted through the rod, and The other end of the pull rod is received in the hollow slot of the second handle, and the pull rod is The section is bent to form a curved section, and the curved section cooperates with the relative angle between the first clamping arm and the second handle to increase the distance between the connecting rod and the shaft, and the pressing handle is accommodated in the second handle. The hollowing groove is formed with a shielding for the tie rod, and the pressing handle is provided with a pivoting portion, and the pivoting portion provides a through pivoting of the connecting rod, and the pressing handle is provided with a baffle at a position adjacent to the pivoting portion, and A positioning hole is defined in the baffle, and the positioning hole is sleeved on the pull rod, and the pressing handle is made of a plastic material and extends parallel on both sides of the pressing handle. There is a side plate, and a card slot is formed in the symmetry of the side plate, and the baffle is made of metal material, and the baffle is inserted into the card slot of the side plate, and the pressing handle forms a pressing at the end away from the pull rod. And a compression spring is interposed between the pressing portion and the second handle, and the second handle protrudes from the hollow groove with a cylinder, and the cylinder is sleeved with a compression spring to form a limit.

A limiting hole is defined in the first clamping arm, and the connecting rod is pivotally disposed at the limiting hole by at least one C-shaped buckle, and the other end of the connecting rod is exposed with an adjusting head outside the first clamping arm. A threaded section is formed at a middle portion of the connecting rod, and the connecting rod is screwed with a linking member at the threaded portion, and is connected to the pulling rod by a linking member.

Wherein, a screw sleeve is fixed at the first clamping arm, and a threaded section is formed at a middle portion of the connecting rod, and a threaded section of the connecting rod is screwed on the screw sleeve, and the connecting rod has one end at the first clamping arm An adjustment head is exposed on the outer side, and a ring is connected to the other end of the connecting rod, and is connected to the rod by a collar.

The first main purpose of the present invention is that the compression spring of the clamp is interposed between the hollow groove of the second handle and the pressing portion of the pressing handle, and is formed at an appropriate distance from the pivoting portion of the pressing handle, and the blocking The plate is fixed to one end of the adjacent pivoting portion, so that the compression spring to the pivoting portion forms a lever ratio larger than the baffle to the pivoting portion, thereby improving the pushing effect of the compression spring, and stabilizing the positioning hole in a slanting manner. Pull the lever to increase its clamping effect.

The second main purpose of the present invention is that the compression spring of the clamp is interposed between the hollow groove of the second handle and the pressing portion of the pressing handle, and the vacant groove and the pressing portion provide sufficient accommodation space. The ball spring can be easily assembled, and the compression springs with different wire diameters, outer diameters and lengths can be selected according to the requirements of use, thereby improving the practicability.

The third main purpose of the creation is that the pressing handle is made of plastic material, and the baffle is inserted in the card slot of the side plate, and the baffle is made of metal material, thereby reducing the use of the metal material. Quantity, with the effect of reducing production costs.

The fourth main purpose of the present invention is that the tie rod is bent at the middle portion to form a curved portion, and the curved portion is matched with the relative angle between the first clamp arm and the second grip to increase the distance between the connecting rod and the shaft. In this way, the displacement of the tie rod relative to the baffle is increased, which not only enlarges the opening degree of the first clamp arm and the second clamp arm, but also improves the engagement precision of the pull rod and the baffle plate, so as to reduce the clamp when the clamp is stuck. The amount of return.

The fifth main purpose of the present invention is that the pressure plate is disposed at the hollow groove of the second handle, that is, pivoted between the first handle and the second handle, so that the user does not have the accidental touch operation. In order to improve the stability of use.

Other objects, advantages and novel features of the present invention will become more apparent from the detailed description and the accompanying drawings.

[this creation]

10‧‧‧Clamp

11‧‧‧First clamp arm

111‧‧‧Fixed holes

112‧‧‧Limited holes

12‧‧‧Second clamp arm

13‧‧‧ shaft

14‧‧‧ Torsion spring

141‧‧‧ front end rod

142‧‧‧ Rear end section

15‧‧‧First grip

16‧‧‧Connecting rod

161‧‧‧C-shaped buckle

162‧‧‧Adjusting head

163‧‧ Thread segment

164‧‧‧ linkages

165‧‧‧ collar

17‧‧‧Second grip

171‧‧‧ empty slots

172‧‧‧Cylinder

18‧‧‧ Connecting rod

19‧‧‧Metal parts

191‧‧‧through hole

20‧‧‧ lever

21‧‧‧Bend section

30‧‧‧pressure handle

31‧‧‧ pivotal department

32‧‧‧Baffle

321‧‧‧Positioning holes

33‧‧‧ side panels

331‧‧‧ card slot

34‧‧‧ Pressing Department

35‧‧‧Compression spring

[study]

40‧‧ ‧ spring clip

41‧‧‧ Connecting rod

411‧‧ fulcrum

412‧‧‧through hole

42‧‧‧Parts

421‧‧‧ aperture

43‧‧‧Compressed spring

44‧‧‧Axis body

50‧‧ ‧ spring clip

51‧‧‧上夹颚

511‧‧‧ Lower handle

52‧‧‧下夹颚

521‧‧‧Upper handle

53‧‧‧ pivoting parts

54‧‧‧First elastic parts

541 (542)‧‧‧

55‧‧‧ lever

551‧‧‧ pin

56‧‧‧Second elastic parts

57‧‧‧ actuation board

571‧‧‧Snap hole

58‧‧‧ Positioning bolt

The first picture is a perspective view of the creation.

Figure 2 is an exploded view of the creation.

Figure 3 is a cross-sectional view of the creation.

Figure 4 is a schematic diagram of the state of use of this creation (1).

Figure 5 is a schematic diagram of the state of use of this creation (2).

Figure 6 is a cross-sectional view of another embodiment of the present creation.

Figure 7 is a cross-sectional view showing still another embodiment of the present creation.

Figure 8 is a cross-sectional view of the prior art.

Figure 9 is a cross-sectional view of another conventional one.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [Simplified Description of the Drawings] for details:

First, as shown in FIG. 1 , FIG. 2 and FIG. 3 , an improved clamp structure includes: a clamp 10 , a pull rod 20 and a pressing handle 30 , and a clamp 10 includes a first clamping arm 11. A second clamping arm 12, a shaft 13 and a torsion spring 14, the torsion spring 14 is sleeved on the shaft 13, and is pivoted by the shaft 13 to the first clamping arm 11 and the second clamping arm 12. In the middle section, the torsion spring 14 further has a front end rod portion 141 and a rear end rod portion 142. The torsion spring 14 is fastened to the second clamping arm 12 by the front end rod portion 141, and is fastened by the rear end rod portion 142. a clamping arm 11 , the first clamping arm 11 is integrally formed with a first handle 15 , and a connecting rod 16 is connected to the first clamping arm 11 , and the second clamping arm 12 is integrally formed with a second clamping handle 17 . The second handle 17 is internally formed with a hollow slot 171 opening toward the first handle 15, and a connecting rod 18 is disposed at the opening of the hollow slot 171. The second handle 17 is embedded with a metal on the outer surface. Piece 19, and in metal A through hole 191 is defined in the through hole 191, and the through hole 191 is used to pass through the connecting rod 18, and one end of the pull rod 20 is connected to the connecting rod 16 of the first clamping arm 11, wherein the first clamping arm 11 is fixed a hole 111, and the connecting rod 16 is inserted and fixed to the fixing hole 111, and is pivoted through the rod 20, and the other end of the rod 20 is received in the hollow groove 171 of the second handle 17, The tie rod 20 is bent at a middle portion to form a curved section 21, and the curved section 21 cooperates with the relative angle between the first clamp arm 11 and the second grip 17 to increase the distance between the connecting rod 16 and the shaft 13. The pressing handle 30 is received in the hollow slot 171 of the second handle 17 and forms a shield for the tie rod 20, and the pressing handle 30 is provided with a pivoting portion 31, and the pivoting portion 31 provides the through pivoting of the connecting rod 18. A damper 32 is disposed at a position adjacent to the pivoting portion 31, and a positioning hole 321 is defined in the baffle 32. The positioning hole 321 is sleeved on the pull rod 20, and the pressing handle 30 is made of plastic material. A side plate 33 is formed in parallel on both sides of the pressing handle 30, and a card slot 331 is defined in the symmetry of the side plate 33, and the block is formed. 32 is made of a metal material, and is inserted into the slot 331 of the side plate 33 by the baffle 32. The pressing handle 30 is formed with a pressing portion 34 at an end away from the rod 20, and is pressed by the pressing portion 34 and the second grip. A compression spring 35 is disposed between the shank 17 , and a cylindrical body 172 is protruded from the shank 17 , and a compression spring 35 is sleeved by the cylinder 172 to form a limit.

For the actual use, please view it from the first figure to the fourth figure. The jig 10 is provided with the first clamp arm 11, the second clamp arm 12 and the torsion spring 14 by the shaft 13 to form the first. The clamping arm 11 is pivotally connected to the second clamping arm 12, and the torsion spring 14 is fastened to the second clamping arm 12 by the front end rod portion 141, and the rear end rod portion 142 is fastened to the first clamping arm 11 for transmission. The elastic force of the torsion spring 14 causes the first and second clamping arms 11 (12) to be in the direction of expansion, and the one end of the pulling rod 20 is disposed in the hollow slot 171 of the second handle 17 and is disposed at the first end by the other end. The arm 11 is configured to pivot the rod 20 with the connecting rod 16 at the first clamping arm 11 , and the positioning hole 321 of the baffle 32 is sleeved at the rod 20 , and the compression spring 35 is sleeved on the second handle 17 . At the cylinder 172, the pressing handle 30 is received in the hollow groove 171, and the two sides 33 of the pressing handle 30 are covered on the pull rod 20, and at the same time, the locking groove 331 of the pressing handle 30 is engaged with the baffle 32, and The pressing portion 34 is pressed against the compression spring 35, and finally the connecting hole 18 penetrates the through hole 191 of the metal member 19 and the pivoting portion 31 of the pressing handle 30, thereby pivoting the pressing handle 30 to the second handle 17. That is, complete its structural group When the operation of the clamp 10 is performed, the first grip 15 and the second grip 17 are pressed together, so that the first clamp arm 11 and the second clamp arm 12 of the clamp 10 are clamped close to each other, and the drawbar 20 is received at this time. The connecting rod 16 is pulled, and can be along the positioning hole 321 The axial direction is pulled out, so that the positioning hole 321 of the baffle 32 does not clamp the pull rod obliquely, so that the clamping action of the clamp 10 can be smoothly performed, and when the first and second grips 15 (17) are relaxed, The pull rod 20 is formed in a state of being pushed toward the baffle 32, and the pressing spring 35 is pushed against the pressing handle 30, so that the positioning hole 321 of the baffle 32 is inclined to catch the pull rod 20, so that it can only be clamped and cannot be relaxed. The state, as shown in FIG. 5, when the clamp 10 can clamp the object, the user does not need to continuously press the first handle 15 and the second handle 17, so as to achieve stable use of the object, and vice versa. When the clamping state is to be released, the pressing portion 34 of the pressing handle 30 is pressed downward by the inner side of the second grip 17, so that the pressing handle 30 is swung by the pivoting portion 31, and the inclination angle of the baffle 32 relative to the rod 20 is eliminated. The pull rod 20 can be smoothly displaced at the positioning hole 321 , and the first clamp arm 11 and the second clamp arm 12 are elastically restored to the original shape by the elastic force of the torsion spring 14 .

In another embodiment of the present invention, as shown in FIG. 6 , a limiting hole 112 is defined in the first clamping arm 11 , and the connecting rod 16 is pivotally disposed on the limiting hole 112 by at least one C-shaped buckle 161 . At the other end of the connecting rod 16, an adjusting head 162 is exposed on the outer side of the first clamping arm 11, and a threaded section 163 is formed at a middle portion of the connecting rod 16, and the connecting rod 16 is screwed with a thread at the threaded section 163. The member 164 is connected to the pull rod 20 by the linking member 164, that is, the adjusting head 162 of the connecting rod 16 can be rotated when the clamp 10 is clamped to the object, so that the linking member 164 is displaced along the threaded portion 163, thereby pulling the pulling rod 20 to produce an adjustment. The clamping force function can increase the clamping strength of the clamp 10 when the linkage 164 is away from the adjustment head 162. Conversely, when the linkage 164 is close to the adjustment head 162, the clamping strength of the clamp 10 can be reduced, thereby enabling It is suitable for the hardness of different objects or the needs of use, and it has the practical effect of fine-tuning the clamping force.

A further embodiment of the present invention is further illustrated in FIG. 7 , wherein a screw sleeve 113 is fixed at the first clamp arm 11 , and a thread segment 163 is formed at a middle portion of the connecting rod 16 and is connected by a connecting rod. The threaded portion 163 of the screw 16 is screwed to the screw sleeve 113, and one end of the connecting rod 16 is exposed with an adjusting head 162 on the outer side of the first clamping arm 11, and a ring 165 is connected to the other end of the connecting rod 16 and is sleeved. The 165 is connected to the tie rod 20, that is, the clamp 10 can rotate the adjustment head 162 of the connecting rod 16 when the clamp 10 is clamped to the object, so that the threaded section 163 of the connecting rod 16 is displaced along the screw sleeve 113, and the pull rod 20 is pulled by the collar 165. The function of adjusting the clamping force is to increase the clamping strength of the clamp 10 when the collar 165 is away from the screw sleeve 113. Conversely, when the collar 165 is close to the screw sleeve 113, the clamping strength of the clamp 10 can be reduced. , which can be applied to the hardness of different objects or used together The demand is adjusted, and the utility model has the practical effect of fine-tuning the clamping force.

According to the structure of the above specific embodiment, the following benefits can be obtained: (1) the compression spring 35 of the clamp 10 is interposed between the hollow groove 171 of the second handle 17 and the pressing portion 34 of the pressing handle 30, and The pivoting portion 31 of the pressing handle 30 is formed with an appropriate distance, and the baffle 32 is fixed to the end of the adjacent pivoting portion 31, so that the compression spring 35 to the pivoting portion 31 form a rod larger than the baffle 32 to the pivoting portion 31. The bar ratio can further improve the pushing effect of the compression spring 35, so that the positioning hole 321 is inclined to stably hold the rod 20 to increase the clamping effect thereof; (2) the compression spring 35 of the clamp 10 is clamped to Between the hollow groove 171 of the second grip 17 and the pressing portion 34 of the pressing handle 30, the hollowing groove 171 and the pressing portion 34 provide sufficient accommodation space, and the ball spring 37 can be easily assembled and can be assembled. The compression springs 35 of different wire diameters, outer diameters and lengths are selected according to the requirements of use, thereby improving the practicability; (3) the pressure handles 30 are made of plastic material, and the baffles 331 of the side plates 33 are provided with baffles. 32 is inserted, and the baffle 32 is made of a metal material, thereby reducing the amount of metal material used, The utility model has the advantages of low production cost; (4) the tie rod 20 is bent at the middle portion to form a curved section 21, and the curved section 21 cooperates with the relative angle between the first clamp arm 11 and the second grip 17 to increase the connecting rod 16 and The distance between the shafts 13 thereby increasing the displacement of the tie rods 20 relative to the baffle 32 not only enlarges the opening degree of the first clamp arm 11 and the second clamp arm 12, but also improves the tension rod 20 and the baffle 32. The accuracy of the engagement is reduced to reduce the amount of retraction of the clamp 10 when it is jammed; (5) the pressure plate 30 is disposed at the hollow slot 171 of the second handle 17, that is, pivoted to the first handle 15 and the second Between the handles 17, the user can be prevented from accidentally touching the operation, thereby improving the stability of use.

In summary, this creation has indeed achieved a breakthrough structural design, and has improved new content, while at the same time achieving industrial use and progress, and this creation is not seen in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, a new type of patent application is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

Only the above-mentioned ones are only preferred embodiments of the present invention, and the scope of the creation of the present invention cannot be limited thereto; that is, the equal changes and modifications made by the majority of the patent application scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧Clamp

11‧‧‧First clamp arm

111‧‧‧Fixed holes

12‧‧‧Second clamp arm

13‧‧‧ shaft

15‧‧‧First grip

16‧‧‧Connecting rod

17‧‧‧Second grip

171‧‧‧ empty slots

18‧‧‧ Connecting rod

19‧‧‧Metal parts

191‧‧‧through hole

20‧‧‧ lever

21‧‧‧Bend section

30‧‧‧pressure handle

31‧‧‧ pivotal department

32‧‧‧Baffle

321‧‧‧Positioning holes

33‧‧‧ side panels

331‧‧‧ card slot

34‧‧‧ Pressing Department

35‧‧‧Compression spring

Claims (9)

An improved clamp structure includes: a clamp comprising a first clamp arm, a second clamp arm, a shaft and a torsion spring, the torsion spring is sleeved on the shaft and pivoted by the shaft At the middle of the first clamping arm and the second clamping arm, the first clamping arm is integrally formed with a first handle, and a connecting rod is connected to the first clamping arm, and the second clamping arm is integrally formed with a first a second handle, wherein the second handle has a hollow opening formed toward the first handle, and a connecting rod is horizontally disposed at the opening of the hollow slot; a pull rod, one end of the pull rod is connected to the connecting rod of the first clamping arm And the other end of the rod is received in the hollow groove of the second handle; and a pressing handle is received at the hollow groove of the second handle and forms a shielding for the tie rod, and the pressure is The handle is provided with a pivoting portion, and the pivoting portion provides a through pivoting of the connecting rod, and the pressing handle is provided with a baffle at a position adjacent to the pivoting portion, and a positioning hole is formed at the baffle, and the positioning hole sleeve is It is disposed on the pull rod, and the press handle is formed with a pressing portion at an end away from the pull rod. Between the pressing portion and the second handle is provided with a compression spring interposed. The jig structure improvement according to claim 1, wherein the tie rod is bent at a middle portion to form a curved portion, and the curved portion is matched with a relative angle between the first clamp arm and the second handle to increase the connecting rod. The distance from the shaft. According to the improvement of the structure of the jig according to the first aspect of the patent application, wherein the pressing handle is made of a plastic material, and a side plate is parallelly extended on both sides of the pressing handle, and a card slot is formed in the symmetry of the side plate. The baffle is made of a metal material and is inserted into the card slot of the side plate by the baffle. The jig structure improvement according to the first aspect of the patent application, wherein the second grip protrudes from the hollow slot with a cylinder, and the cylinder is sleeved with a compression spring to form a limit. The jig structure improvement according to the first aspect of the patent application, wherein the torsion spring extends a front end rod portion and a rear end rod portion, and the torsion spring is fastened with the front end rod portion to the second clamping arm, and The end rod portion is buckled on the first clamp arm. According to the improvement of the structure of the jig according to the first aspect of the patent application, the second handle is embedded with a metal member on the outer surface, and a through hole is penetrated through the metal member, and the through hole is used for piercing the connecting rod. According to the improvement of the structure of the jig according to the first aspect of the patent application, the first clamping arm defines a fixing hole, and the connecting rod is inserted and fixed at the fixing hole, and is pivoted through the pulling rod. According to the improvement of the structure of the jig according to the first aspect of the patent application, wherein the first clamping arm defines a limiting hole, and the connecting rod is pivotally disposed at the limiting hole by at least one C-shaped buckle, and the connecting rod is further The other end of the first clamp arm is exposed with an adjusting head, and a threaded section is formed at a middle portion of the connecting rod, and the connecting rod is screwed with a linking member at the threaded portion, and is connected to the pulling rod by a linking member. The jig structure improvement according to the first aspect of the patent application, wherein a screw sleeve is fixed at the first clamp arm, and a thread segment is formed at a middle portion of the connecting rod, and the threaded portion of the connecting rod is screwed to the screw At the lock sleeve, one end of the connecting rod exposes an adjusting head on the outer side of the first clamping arm, and a ring is connected to the other end of the connecting rod, and is connected to the pulling rod by a collar.