TW416900B - Pressing tool - Google Patents

Abstract

The pressing tool has two working jaws (1, 2) on a common axis (3), forming a tool gap (4); two partly circular setting rings (21, 22) movable circumferentially on one side by one of the jaws, and forming a complete ring when the jaws are closed. There are also several pressing elements (45) arranged on the jaws with their free end movable towards or away from the center of the complete ring.

Description

ίIG3〇〇

[Scope of the invention] The present invention relates to a restraining tool. [Background of the invention] Also ^ The conventional pressure-fixing task of the conventional metaphor sleeve is adjustable to form the surrounding outer side, and the entry through the clamp is from one side to the pressing polygon. The pressing surface is on the table. The pressing clamp has been disclosed, but the rod can be rotated on the entire pressing plane or the section surface of the pressing clamp can be contacted with the pressing to make a rotating hole, and a plurality of rotating pressing planes and pressing The wire clamp's uranium clamp is located in the clamp action. The actuation of the key axis section and the setting of the key axis are driven. Adjustable pressing position shape for each sliding surface. Squeeze the relationship of the clamp, one end of the sliding surface, the sleeve, the head, and the head. The elbow is made of clamps. The positioning surface of the entire sliding surface and the longitudinal clip designed by the contact pad are rotating together. The rod package is determined to be rotated to drive all the pressing sections of its pressing section to appear on adjacent pressing abutment surface sleeves or cable execution pressing bolts, its cross section is held, and the center movement of its rod is clamped within the pressure range. Whether the size of the work piece can pass through the center hole that is separated from each other when the above-mentioned pressing tool is used to press the cable part when the extended surface that is closed and clamped is pressed, so the above pressing tool can only be used to press Those that can pass through this central hole. [Summary of the Invention] In view of this, the present invention is to provide a pressing tool which is the same as the above type, but does not need to consider the size of the pressed object too much. According to the object of the present invention, the holding tool includes: two work clamps rotating around the same axis to form a jaw;

Case 5. Description of the invention (2) Two adjustment rings each along the circumference, sweet Each work clamp has its own work clamp and the adjustment ring are not in the upper circle when turning

The semi-circular adjustment ring moving in the direction of direction, each work is refreshed to form a complete circle; the pressed part rotates at the free end in the complete circle from the center of the complete circle by a certain number of pressed zeros, so that the pressed part The center rotation of is the problem of driving one of the inventions after pressing. Press the semi-circular adjusting tool of the present invention to make the clamp and the semi-circular size cable end known as the clamp. Press the cable end with the shape adjustment ring of the present invention. For formable products, for example, pressing one end of the insulation, for example, producing similar products in cable form. Wait. It is better to set the semi-full ring of the work clamp, such as a larger ruler, to pass the cable made by the holding tool, and then make the cable. For suppressing bare wire or cable end adapters, the crimping parts are roundly adjusted on the ring. This is to produce the desired pressing profile correctly by at least putting in each of the pressing grooves so that the distance between the rotations can also be matched with another moving device with an oblong groove and two axes. -Inch cable end sleeves, separate crimped parts are taken out of the open jaw holes after the pressing operation is completed. It is not necessary to make the cable end sleeves to be used as tools for the application of various wire or cable-shaped insulation-covered wires. The contact bushing, wire ends can be pressed with iron wire, and the rope is installed on the work clamp with the shaft design. It can be more effective when one of the shafts presses the parts and the corresponding changes are made.

Page 5 __g No. Month 格 不 ___ 5. Description of the invention (3) The better design of the present invention is to make the free ends of the pressed parts facing each other do not slide against each other when they move toward the center of the complete circle. This design will reduce the friction between adjacent pressed parts ’so that the holding tool will have a greater force transmission effect, and at the same time, it can extend the life of the holding tool. Another design of the present invention is to lock the work clamp with a locking device after the jaw is closed to ensure that the desired pressing profile can still be achieved after the completion of a complete clamping tool working cycle, while avoiding the jaw during the pressing process Opening again The best design of the present invention is to control the locking device with a complete circular rotary motion. In order to achieve this purpose, an action piece of the locking device can be designed on one of the semicircular adjustment rings. When the semicircle adjustment ring is rotated in the closed state of the jaw, the action piece will be driven to lock the jaw * to make the system. If necessary, a driving device for driving at least one semicircular adjustment ring is designed. This driving device can, in principle, use electric, electric, mechanical, pneumatic, or hydraulic principles to achieve the driving purpose. In order to obtain a better force transmission effect, a toggle group can be designed on the holding tool. The holding tool can be designed upright or palm-shaped, in the latter case it can be designed, for example, in the shape of a pair of pliers, and one of the work clamps is connected to a fixed handle, and the other work clamp is connected to a movable handle through a joint. It can also be connected as a part of the toggle set. ^ Let the present invention ^ The above and other objects, features, and advantages be made clearer

Another design of the present invention is to use a return device to return the semi-circular adjustment ring to the rest position (that is, the starting position) after the pressing process, bring the locking device back to the rest position (that is, the starting position), and Return the tool port (ie pliers 2) to the open state. / 、 _Case No. 88110842_ 'Revision _ 5. Description of the invention (4) It is easy to understand. The following is a detailed description of a preferred embodiment and the accompanying drawings. [Schematic description] Figure 1 Squeeze jaws open side view. Figure 2 A perspective view of the jaws of a compression jaw with an open mouth. Fig. 3 Side view of compression jaw closed and untwisted adjustment ring D Fig. 4 Perspective view of compression jaw closed and untwisted adjustment ring. Figure 5 Side view of the jaw with the jaw closed and the adjustment ring twisted. Figure 6 A perspective view of the jaws of a compression jaw closed and the twisted adjustment ring. [Simplified description of the numbers in the figure] 1, 2 work clamps, 3 shafts, 4 jaws, 5 '6 semi-circular holes, 7 first handles, 8 second handles, 9 elbow segments, 10 rotation shafts, 11 drive rods, 12 round ends, 13 bearing disks 14 Clamping lever 15 Bolt 16 'Drag spring 17 Gear ring 18 Ratchet claw 19 Pump 20' 21 Adjusting ring 23 '24 Slot 25 > 26 Slot 27 First axis 28 Second axis 29, 30 Flange 31 '32 Pressure spring 33 Shaft 34 Chain link 35 Shaft 36 Circular groove 37 Locking device 38 Lock lever

Page 7a Pressure spring shaft flange sweet mouth pressing surface 49 V. Description of the invention (5) Sleeve 40 Reverse contact piece 42 Θ 子 44 Pressing part α End face 48 Groove 39 41 43 45 47 50 [Description of the embodiment The following will describe a specification example of the press clamp of the present invention. The pressed sweet contains a first work clamp 1 which is connected with the second work clamp 2 in a way that the joint is large. Job losses 1 and 2 are located on the plane of Dou ^ ^ 1 and are relatively rotated around a common god. When working + a jaw 4 appears. When the work clamps d and 2 are unscrewed from each other 'and between 6, the two semi-circular holes are closed in the jaws: the semi-circular holes 5 at the edge of the face are completely round. At $ 5, a pre-determined diameter of a younger one working clip 1 spotted _L r,

The handlebar 7 is a one-piece structure. It is inspected from Dandu of the shaft 3, and the handlebar extends in the opposite direction of the work J „^ ^, 0 ^ Soil clip 1. In addition, there is a brother ’s handlebar 8, which can be ^ Palisade oblique, s + should be first hand 1 and second work clip 2 into the sequence of the head, and can be '4 & ^ Chu second work clip 2 is rotated around axis 3. Second hand handle 8 Close to the first-D & 丄 π π Q _ ^ „Brother-one end of the clip 2 spreads out to form the elbow and sacral segment 9 'the elbow segment blood first-main +. ^ 办 办 町 # # w & There is a rotation axis between the rest of 8 1 坊 stuffing # ή * Said from β 冓 into a two elbow segment of the rotatable drive rod 11 ^ ΛΑ ^ Ml Q is circular End 12, the round end is carried on a corresponding carrier plate 13 and can be turned on; ^ 1 4 ii α. M bismuth rotation on the carrier plate. The bearing plate 13 and the free end of a clamp 柃 1 4 are joined together in a manner such as — ._ basket forming, and the continuation of the tightening rod is far away from the bearing plate 丨 3 — ^ owe __________, fixed to the bolt 15 Put γ on first hand.

This design allows the clamping lever 4 to extend along the longitudinal direction of the first handle 7, the load plate is located beside the shaft 3, and the bolt 15 is located at the bottom free end of the first handle 7. The inside of the first handle 7 is provided with a pull spring “parallel to the clamping rod 14”, one end of the spring is fixed on the driving rod near the carrier plate 13], and the other end extends toward the bottom of the first handle 7 and is fixed to the On the handlebar. The pull spring 丨 6 plays the role of the second handlebar 8 and the second work clamp 2 to restore the spring, and pulls the binomial element back to the starting position (that is, the rest position). When this position is reached, the clamp The mouth will open. The second handlebar 8 will also leave the first handlebar 7. The driving rod 11 is located at one end of the rotating shaft 10 and has a toothed ring 17 inside the toothed ring. It is located on the second handle 8. 1 7, 18 'and 19 together constitute a commonly known ratchet set, and the second handle 8 will only move toward the first handle 8 after the pressing forceps have reached the fully closed state. Move in the opposite direction. Of course, the pliers will open tightly in an emergency situation, but this will not explain the emergency situation, because this belongs to the stent; the category of good quality. The clamping rod 14 is located on the carrier plate 13 and the bolt The position between 15 has elasticity J to facilitate the high pressure after finishing the pressing operation Produces a slack effect. If it is necessary to establish a large slack path for the carrier plate 13, a screw nut 1 can be inserted into the short oval groove on the first-handle 7 (for details, please: (See Figures 5 and 6). At this time, only when the bolt hits the bottom of the oblong groove, the tension rod 14 will elastically deform. The jaw structure of the pressing pliers of the present invention will be described in detail below. It can be seen from Fig. 1 that there is a semicircular adjustment ring 20 and 21 for each of the work loss 1 and the work clip 2. The two adjustment rings are located on the side of the work clip 丨 and the work clip 2 facing the jaw. Mouth closed ^ Work clamp 1 and work clamp 2 will be close to each other

Page 9 _88¾¾ is appropriate. __ Five years' description of the invention ¢ 7) Combine-and the two adjustment rings 20 and 21 form a complete circle. In order to keep the entire circle stable, the groove noses 22, 23 on the upper and lower end faces of the adjustment rings 20, 21 will be inserted into the holes 24 25 on the upper and lower end faces of the adjustment rings 20, 21, respectively. The two adjustment rings 20, 21 have a coaxial relationship with the two semicircular holes 5, 6 on the first work clamp 1 and the second work clamp 2. Therefore, when the jaw 4 is closed, the two adjustment rings 2 0, 2 The complete circle formed by 1 and the complete circle formed by the two semicircular holes 5, 6 also have a coaxial relationship. The two adjustment rings 20, 21 have the same radial width, and are located between the two sides of each adjustment ring. They can slide on the work clamps 1 and 2 in the circumferential direction. The shafts are fixed on the work clamps 1 and 2, respectively, and are inserted into the inside of the pliers at a vertical angle from each of the work clamps. The shaft center component includes a first shaft center 26 located at the inner recess of each adjustment ring 20, 2 1. When viewed from the circumferential direction of the adjustment rings 20, 21, the first axis 26 is located approximately at the center of the adjustment ring. The shaft center also includes a second shaft center 2 7 which is located on the outer protruding part of each adjustment ring 2 0, 2 1 and is closer to the bottom of each adjustment ring. From the circumferential direction of the adjustment ring, the first shaft 2 6 is sandwiched between Second axis 2 7 middle. In order to reduce friction, a circular rolling part 28 can be covered on the second shaft center 27, and the adjusting ring 20, 21 can rotate against the rolling part. Each adjustment ring 2 0, 2 1 has two second shaft centers 27, and if it is necessary to increase the shaft center for enhanced-strong stability, the first and second shaft centers 26, 27 may be added as required. Quantity. The outer protruding parts of the adjusting rings 2 0, 2 1 each have a flange 29, 30 located in the middle but protruding outward. One end of the pressure spring 31, 32 is connected to the flange 29, 30, and the other ends of the pressure spring are respectively Fasten to work clamps 1, 2. The compression springs 31 and 32 act as the adjustment springs 20 and 21

Page 10 __ΒδΜδΙ3 00 V. Description of the invention (8) a_

, Push the adjustment ring 20, 21 counterclockwise to rotate, so that the adjustment ring 20, 2l returns to the rest position. If necessary, a tension spring may be provided on the other side of the flange 29, 30 instead of the compression springs 31, 32. In the following description, when the jaw is closed, the rotation of the adjusting ring 20, 21 is as described above. The end of the second handle 8 near the jaw 4 has a first elbow segment 9. The free end of the elbow segment and A shaft 33 is connected, which is perpendicular to the plane of the pliers. The shaft 33 is provided with one or two rotatable chain couplings 34 facing the first elbow section 9, and the end of the chain link which is far from the shaft 33 is mounted on the other shaft 35 and can be rotated. The shaft 35 is fixed to the radial flange 30 of the adjustment ring 21. Therefore, when the second handle 8 is moved in the direction of the first handle 7, the second adjustment ring 2ι ^ is caused by the first elbow segment 9 via its radial flange 30 and one or two chain links 34 rotates in a clockwise direction (Figure!), Because the jaw 4 is closed at this time, so the second adjustment ring 21 will rotate the first adjustment frame 20 when it rotates. When the two adjusting rings 20, 21 in the figure rotate clockwise, the compression springs 31, 32 are pressed. When the handle 8 is released, the adjustment ring 2021 and the pressure springs 31 and 32 will move in the opposite direction. In order to increase the stability of the above drive system, the shaft 33 can be designed in the side wall range of the work clamps 2 and 2 for determination. In this way, it is necessary to determine the sliding range of the related oblong groove 36 axis 3 3 first. The work clamps 1 and 2 have a locking device 37. The lock device has a lock cymbal located in the first, the work clamp 2 is protruded in the direction of the first work clamp 1, and the lock lever is installed at one end inside the second work clamp 2. It can be rotated on the shaft 39, which is fixed at the front end of the work clamp 2. The shaft 39 is located outside the second adjustment ring 21,

Page 11 ^ __ ssAfcfeBOQ Year, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, month, week, month, week, thirty-two, five-year. The lock lever 38 can only be installed on one side or one side of the second adjustment ring 21 and rotates clockwise around the shaft 39 by the force of the pressure bomb # 4 0 (or pressed against the second adjustment ring 21 Direction). The rotation of the lock lever 38 around the shaft 39 in a clockwise direction is blocked by the shaft flange 41 fixed at the front end of the second adjustment ring 21. At this time, the lock lever 38 continues to bear against the shaft due to the action of the pressure spring 40. Flange 41 ^ The locking lever 38 has a reverse contact piece 42 on the side close to the shaft flange 41. When the second adjustment ring 21 is rotated in a clockwise direction (Figure 1), the shaft flange 41 will touch the reverse The contact piece 42 causes the lock lever 38 to rotate around the shaft 39 in the counterclockwise direction. At this time, the hook 43 protruding from the lock lever 38 to the first work clamp 1 also rotates around the shaft 39 in the counterclockwise direction. The jaw 44 catches the shaft flange 4 丨 fixed on the first work clamp i in the closed state, and then locks the work clamps 1 and 2 in the closed position. The structure and arrangement of the press-fitted parts 45 will be described in detail below. All press-fit parts use 4 5 as the code 'their structure is exactly the same, in terms of quantity selection, a & to achieve full press-fit purpose is used as the criterion for determining the number, but even numbers are better' because it can work in each The same number of crimping parts 4 and 5 are arranged on the clips 1 and 2. The present invention uses a total of six press-fit parts 45, three of which are assigned to the first work clamp 1 (or the first adjustment ring 20), and the other three are assigned to the second work loss 2 (or the second adjustment ring 2) 1 ). One end of each of the pressing parts 45 is designed in a rod shape, and one end thereof is, for example, a pressing surface 46 having a flat plate shape. The side of the pressing surface 46 is the end surface 47 of the rod-shaped pressing part 45. The end surface has an acute angle relationship with the pressing surface 46. The angle of the acute angle is selected so that the end surface 47 and the pressing surface 46 of the adjacent pressing part 45 have a surface. contact. The other end of the rod-shaped pressing part 45 is designed as a fork, and the adjusting rings 20, 21

Page 12_Case No. 8811 (> yb5'Ci00 Car Month Day__ Amendment V. Description of the invention (10) The surface 46 enables vertical movement of the plane on which the adjusting rings 20, 21 lie. Each pressing part 45 One end of the bearing adjustment ring rotates around an axis 48 which is fixed on the adjustment ring and is perpendicular to the plane of the adjustment rings 20, 21. At about the center of the two ends of the pressing part 45, there is a parallel to the shaft 48 (that is, parallel to the adjustment rings 20, 21). The plane is vertical) and the pump 49 is fixed on the work clamps 1 and 2, respectively, and the pressing part 45 is rotated around the axis. The pressing part 45 is controlled by the shafts 48 and 49, and the tail end of the shaft 49 has an oval. The groove 48 'of the shaped groove 50' slides in the groove. When the adjusting ring 20, 21 rotates, the distance between the two shafts is adjusted by the sliding of the shaft 4 8 in the long circular groove 50. Figure 1 shows that the adjustment rings 20 and 21 each have three axes 48, and the circumferential distance between the three is the same. There are also three axes 49 on each of the work clamps i and 2. From the circumferential direction of the adjustment ring, the distance between the three The circumferential distance is also the same. When jaw 4 is closed, two adjacent axes of different adjustment rings (and different work clamps) will be found = ( The circumferential distance between the shafts 49) is also the same. That is, when the adjustment is bad 20, 21, a complete circle is formed in the closed state of the jaw 4, and the circumferential distances between the shafts 48 (and 49) are all The same design is also used. The design between the parallel plate and the parallel plate design 48 is different from the above specifications, that is, the front slot slot is mounted on the shaft 48. The slot slip ring can be designed to be square or rectangular. Xiao Yanya makes the plane where the parallel plate is perpendicular to the longitudinal axis of the shaft 48, so that the two slide with the parallel edges on the opposite side in the oblong slot 50. The operation of these two components 45 can also make Pressing force is transmitted more evenly. Xing axis 2 into the picture Aixian ^ perspective view of the clamp-type holding tool in the state shown in Figure 1.; Second, 45 shows the shape of a rectangular straight rod 'pressing surface 46 and straight Rod—1-L and more prominent than the surface. The shaft 48 is located on the adjustment ring 2 ΜΜήΙ / ίΐ awaw wi _7 " ------------------ and 1 page 13_case No. 884ΑΕΘ 00 sundial five, description of the invention (11) " ~ ---, the central part of 21, and the other end of the pressing part 45 is sleeved. Pressing surface 46 The angle between the adjacent end surfaces 47 of the same pressing part 45 should be selected such that the end surface runs at a small angle to the pressing surface 46 of the adjacent pressing part 45, and

After the end of the press-fitting process, the tip parts come into contact, and the two opposite planes never touch each other. V As can be seen from Fig. 2, the driving rod 11 and the chain link 34 are designed in a parallel structure, and the second handle 8 (or the first elbow segment 9) is sandwiched between the parallel structures. C. The working principle of the holding tool of the present invention will be described in detail below based on the graphs. Figures 1 and 2 show the shape of the jaw when it is opened. At this time, the handles 7 and 8 are at the maximum distance, and the adjustment ring 2 O and 2 丨 are also rotated counterclockwise by the action of the pressure springs 31, 32 to the maximum distance between them. In this state, the adjustment rings 20, 21 can no longer continue to rotate in the counterclockwise direction, because at this time, the shafts 48 on the adjustment rings 20, 21 have hit the top of the oblong groove 50. The pressing part 45 is in a rest position and has been rotated at a maximum angle about the shaft 49. The shaft flange 41 on the adjustment ring 21 no longer touches the reverse contact piece 42. At this time, the j 1 lock lever 38 rotates at a maximum angle around the shaft 39 in a clockwise direction due to the action of the pressure spring 40. When the pressing pliers are in the above state, the work to be pressed can be placed in the semicircular holes 5 and 6 in the jaws. The semicircular holes 5 and 6 have the largest diameter in this open state.

Page 14

416300 ___ Case No. 88110842 V. Description of the invention (12) If the movable second handle 8 is moved in the direction of the immovable first-hand handle 7, the states shown in Figs. 3 and 4 will appear. At this time, the jaw 4 is closed ', and the two working clamps 1 and 2 are also in close contact with each other. Although the tension spring 16 has been subjected to some stress, and the groove noses 22, 23 have been inserted into the grooves 24, 25, a complete circular adjustment ring 20, 21 has not been rotated, and the pressing part 45 has not yet been rotated. Although the lock lever 38 and its hook 43 have entered the working clamp range at this time, the shaft flange 44 'has not been hooked because the shaft flange 41 has not touched the reverse contact piece 42 of the lock lever 38 at this time. If you continue to move the movable second handle 8 in the direction of the non-movable first handle 7, the situation shown in Figs. 5 and 6 will occur. At this time, the elbow segment 9 of the chain link 34 moves toward the front end of the pliers, and at the same time, the adjustment rings 20, 21 'are driven by the flange 30, so that the adjustment rings 20, 21 rotate in the clockwise direction. At this time, the pressure springs 31 and 32 are simultaneously pressed, while the tension spring 16 is pulled further apart. ~ When the adjusting ring 2 0, 2 1 starts to rotate clockwise (Figures 5 and 6), the shaft flange 41 also starts to touch the reverse contact piece 41 of the lock lever 38, pushing the lock lever 30 to reverse The clock direction opposes the elastic force of the pressure spring 40 and rotates around the shaft 39, so that the hook 43 of the lock lever 38 catches the shaft flange 44 and tightly joins the work clamps 1 and 2 together. When you continue to move the first handle 8 to the first handle 7, the complete circle formed by the adjustment rings 20, 21 will continue to rotate clockwise. At this time, the shaft 48 will be driven by the adjustment rings 20 and 21, so that the pressing part 45 continues to rotate around the shaft 49 in a clockwise direction to the pressing position. The D axis 48 is located in the long groove 50 of the pressing part 45. It will drive the pressing part 45 to rotate together.

第 15__Case No. 88lM ^ 3 月 〇_ Five, the description of the invention (13) The work that was originally placed between the pressing parts 45 will be subjected to compression at this time. When 8 is applied, the pressing force becomes larger, and finally the clamping lever 14 will be elastically squeezed out due to the action of the driving lever 11. In this way, a softer pressing process can be obtained on the one hand, and ratchet sets 17, 18, and 19 on the other hand can be released. At this time, the driving lever 11 is first pushed by the action of the clamping lever 14 and the pull spring 16, causing the second handle 8 to leave the first handle 7 again. Next, the adjustment rings 20, 21 rotate counterclockwise due to the action of the compressed pressure springs 31, 32 (Figures 5 and 6), and make the pressing part 45 around the axis & edge in a counterclockwise direction. 49 turns away from the pressed position. Then the shaft flange 41 leaves the reverse contact piece 42 of the lock lever 38. The lock lever 38 rotates clockwise around the shaft 39 through the action of the pressure spring 40 to cause the hook 43 to disengage from the shaft flange 44. At this time, the pliers are opened again by the action of the pulling spring 16. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention, 'any person skilled in the art' can make some changes and retouching without departing from the spirit and scope of the present invention. The scope of protection of the invention shall be determined by the scope of the attached patent application.

Page 16

Claims (1)

Case No. 881 Amendment Month Six, Patent Application Scope 1, a holding tool, including: two work clamps rotating around the same axis to form a jaw; two semicircular adjustments moving in the circumferential direction Ring, each work clip has an adjustment ring, which forms a complete circle when the jaws are closed; each work clip has a certain number of press-fit parts, and the position of the press-fit parts on the work clip and the adjustment ring makes the press fit The free ends of the parts facing each other when the complete circle rotates are either rotated toward or away from the center of the complete circle; and a driving device for driving at least one of the semicircle adjustment rings. 2. The holding tool as described in item 1 of the scope of patent application, wherein each pressing part is mounted on the work clamp and the semi-circular adjustment ring attached to the work clamp with the shaft. 3. The holding tool as described in item 1 of the scope of patent application, wherein each of the pressing parts has at least one axis positioned in an oblong groove. 4. The holding tool as described in item 1 of the scope of patent application, wherein the free ends of the pressed parts facing each other do not slide toward each other when moving toward the center of the complete circle. 5'The holding tool as described in item 1 of the scope of patent application, further comprising a locking device for locking the work clamp when the jaws are closed. 6. The holding tool according to item 5 of the scope of patent application, wherein the rotation of the complete adjustment circle controls the locking device. 7. The holding tool as described in any one of the scope of patent application 1, 2, 3, 4, 5 or 6, wherein the driving device is composed of a toggle group. 8. As described in item 7 of the patent application scope, one of the tools Page 17 _ Wei Nianyue __ VI. Scope of patent application The clip is connected to the fixed handle, and the other work clip is connected to the movable handle. -9. The holding tool as described in item 7 of the scope of patent application, wherein a segment of the active handle is designed to be a part of the toggle group. 10. The restraint tool as described in item 8 of the scope of patent application, wherein a segment of the movable handlebar is designed to be a part of the toggle group. 11. The holding tool according to any one of the scope of patent application 1, 2, 3, 4, 5, 6, 8, 8 or 9, wherein the recovery device restores the plunger-shaped adjustment ring and the pinning device. Go to rest position. 12. The holding tool as described in item 7 of the scope of patent application, wherein the return device returns the round adjustment ring and the locking device to the rest position 13 position. The holding tool as described in item 10 of the scope of patent application, wherein the semi-circular adjustment ring and the locking device are restored to the rest position by the return device. Page 18