High magnification forceps with easy grip

Abstract

The utility model relates to tool pliers technical field, especially be convenient to hold's high amplification type tool pliers, including the head, be equipped with the pressure lever and first clamp bar in the head bottom, the second clamp bar is hinged in the rear side of head, the second extension of pressure lever extends to the upside in the rear end of lever portion, this structure design makes through the pressure lever to the rear side of head top bending to improve the length of power arm of pressure lever, improves the amplification multiple of pressure lever to force, and tool pliers size is relatively light and nimble, convenient to hold and use, because the second clamp bar includes holding pole portion and first extension, first extension extends to the front side in the top end of holding pole portion, this structure design makes the fulcrum of second clamp bar be located in the front side, thereby can make the head more small and light; through setting first tooth section in the rear side of head, setting second tooth section in the front side of second extension, being equipped with the gear that matches between first tooth section and second tooth section, thereby can hold the multiple of higher amplification.

Description

Technical Field

[0001] This utility model relates to the field of tool and pliers technology, specifically to a high-amplitude large tool and pliers that is easy to hold. Background Technology

[0002] Common types of pliers include hole punchers, eyelet pliers, wire strippers, and crimping pliers. One of the most important performance indicators of pliers is their portability and ease of use. Taking hole punchers as an example, hole punchers are used to punch holes in sheet materials such as leather, paper, thin metal, and plastic. The design of hole punchers mainly needs to consider two factors: first, to save as much effort as possible, and second, to be as convenient to use as possible.

[0003] The applicant previously designed a hole punch (see Chinese patent document CN221892117U), which includes a fixed handle, a rotating handle, a clamp base, a punch, and a pressure bar. The pressure bar is a straight rod, with its middle part hinged to the clamp base. The front end of the pressure bar is located below the punch, and the rear end of the pressure bar is located below the pressing part of the rotating handle. This lever method achieves a relatively labor-saving hole punch structure.

[0004] During actual production and subsequent use, the following problems were found with this hole punch pliers: (1) The rotating handle of this hole punch is equivalent to a first-level lever, and the pressure bar is equivalent to a second-level lever. Since the pressure bar is a straight bar, if the amplification factor of the pressure bar is to be increased, the pressure bar needs to be made longer, which will cause the hinge point between the rotating handle and the pliers to move backward, resulting in a larger pliers size and a larger distance between the rotating handle and the fixed handle, making it inconvenient to hold, and the whole hole punch will be quite bulky.

[0005] (2) The rotating handle of this hole punch applies force to the pressure bar through the pressing part set on the rear side. The reason for setting the pressing part on the rear side of the rotating handle is to increase the length of the power arm of the pressure bar. However, this will increase the size of the pliers seat to accommodate the rear part of the pressure bar and the pressing part on the rear side of the rotating handle. It will also make the whole hole punch relatively bulky and unable to be made into a lighter structure.

[0006] Therefore, current hole punchers struggle to achieve a good balance between size and grip strength amplification. Increasing grip strength amplification leads to larger hole punchers, resulting in an uncoordinated and bulky structure. Conversely, making appropriately sized and lighter hole punchers results in reduced grip strength amplification. Utility Model Content

[0007] The present invention aims to provide a high-magnification large-format pliers that is easy to hold, which has a high magnification factor for grip strength, while having a more compact and easy-to-use size.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: Design a high-amplitude large-format pliers for easy gripping, including a pliers head with jaws. The pliers head has an upper support on its lower side and a pressure bar at the bottom of the pliers head. The upper support is drivenly connected to the pressure bar. A first pliers bar is located at the bottom of the pliers head, and a second pliers bar is hinged to the rear side of the pliers head. The second pliers bar includes a gripping section and a first extension. The first extension extends forward from the top of the gripping section, and its front end is connected to the pliers head via a first hinge structure. The pressure bar includes a lever section and a second extension. The second extension extends upward from the rear end of the lever section. A first toothed segment is located at the rear side of the pliers head, and a second toothed segment is located at the front side of the second extension. A matching gear is located between the first and second toothed segments, and the gear is connected to the second pliers bar via a second hinge structure. The front portion of the lever section is connected to the bottom of the pliers head via a third hinge structure. At least one of the first, second, and third hinge structures is a sliding connection structure.

[0009] Furthermore, the first hinge structure, the second hinge structure, and the third hinge structure each have a first hinge axis, a second hinge axis, and a third hinge axis, respectively. A first resistance arm is formed on the second clamp bar between the axis of the first hinge axis and the axis of the second hinge axis, and a second power arm is formed on the section of the pressure bar between the axis of the third hinge axis and the axis of the second hinge axis.

[0010] Furthermore, the first hinge structure is a sliding connection structure, which includes a sliding hole provided on the pliers head, the sliding hole being inclined downward from front to back, the front end of the first extension of the second pliers bar being provided with a first hinge hole, and the first hinge shaft of the first hinge structure passing through the sliding hole and the first hinge hole.

[0011] Furthermore, both the first tooth segment and the second tooth segment are arc-shaped tooth segments, and both the first tooth segment and the second tooth segment are centered on the center line of the third hinge axis.

[0012] Furthermore, a first power arm is formed between the end of the gripping rod of the second clamp and the axis of the first hinge shaft, with a length of 150–350 mm; the length of the first resistance arm is 10–60 mm; the length of the second power arm is 30–110 mm; a second resistance arm is formed on the pressure rod between the axis of the third hinge shaft and the contact point between the ejector pin and the front end of the pressure rod, with a length of 5–40 mm.

[0013] Furthermore, a U-shaped buckle is provided at the bottom of the upper pusher, the U-shaped buckle is hinged to the front end of the pressure rod, and a roller is provided at the front end of the pressure rod, with the bottom of the upper pusher abutting against the roller; a return spring is sleeved on the upper pusher or a return spring is provided between the first clamping rod and the second clamping rod; or, A third toothed segment is provided at the lower part of the upper pusher, and a fourth toothed segment is provided on the side of the clamp head or the first clamp bar. A transition gear is provided between the third toothed segment and the fourth toothed segment, and the transition gear is hinged to the front end of the pressure rod.

[0014] Furthermore, a screw for adjusting the distance between the first clamp bar and the second clamp bar is provided on the lever portion of the pressure bar. The screw is screwed into the middle part of the lever portion, and the front end of the screw abuts against the clamp head.

[0015] Furthermore, this easy-to-grip, high-amplitude large-format pliers is a hole punch, wherein the upper ejector is a circular ejector pin, a pin seat is correspondingly provided on the top inner side of the jaws, and a hole spacing limiter is provided in the jaws; or, This easy-to-grip, high-amplitude large-format pliers is a flat hole pliers, wherein the upper ejector is an elliptical ejector pin, a pin seat is correspondingly provided on the top inner side of the jaws, and a hole spacing limiter is provided in the jaws; or... This easy-to-grip, high-amplitude large-format pliers is a drain hole pliers. The upper support is a drain hole lower mold head, and a drain hole upper mold head is correspondingly located on the top inner side of the pliers jaws. A hole spacing limiter is provided in the pliers jaws; or... This easy-to-grip, high-amplitude large-format pliers is a crimping pliers, wherein the upper part is a crimping movable block, the top surface of which has multiple crimping protrusions, and the inner top surface of the pliers jaws has corresponding multiple crimping grooves; or... This easy-to-grip, high-amplification large-format pliers is a buttonhole pliers, wherein the upper top part is a lower buttonhole mold head, and a corresponding upper buttonhole mold head is provided on the top of the inner side of the pliers jaws.

[0016] Furthermore, the first clamp bar is a grooved bar with a first groove, and the bottom of the clamp head is provided with a connecting rod portion, which is fixedly connected to the top of the first groove; the gripping rod portion of the second clamp bar is a grooved bar with a second groove, and the second extension portion of the pressure rod is located at the top of the second groove; the gripping rod portion of the second clamp bar is a grooved bar with a second groove on its inner side, and the first extension portion of the second clamp bar includes a first plate located on the left and / or right side of the top of the gripping rod; the front part of the lever portion is formed by a second plate on the left and / or right side, and the connecting rod portion is arranged intersecting with the second plate; or, The first and second clamp bars are solid bars, and the clamp head and the first clamp bar are an integral structure. Weight reduction grooves are provided on the clamp head, the first clamp bar and the second clamp bar respectively. The front end of the pressure bar is provided with a first front rod portion, the bottom end of the clamp head is located in the first front rod portion, the top of the second clamp bar is provided with a second front rod portion, and the second extension portion on the rear side of the pressure bar is located in the second front rod portion.

[0017] Furthermore, the maximum opening distance between the rear ends of the first and second clamp bars is 60-145mm; the length from the top of the clamp head to the bottom of the first clamp bar is 150-350mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The pressure bar of the easy-to-grip high-magnification large-sized pliers is equivalent to a second-stage lever. The pressure bar includes a lever part and a second extension part. The second extension part extends upward at the rear end of the lever part. This structural design allows the length of the power arm of the pressure bar to be increased by bending the pressure bar upward at the rear side of the pliers head, thereby increasing the amplification factor of the pressure bar and making full use of the space at the rear side of the pliers head. This allows the pliers to be made into a relatively compact size while increasing the amplification factor of the force, making them easy to hold and use. (2) The second pliers bar of the easy-to-grip high-magnification large-sized pliers is equivalent to a first-stage lever. Since the second pliers bar includes a gripping bar part and a first extension part, the first extension part extends forward at the top end of the gripping bar part. This structural design allows the fulcrum of the second pliers bar to be located at the front side. The fulcrum of the second pliers bar needs to be supported by the pliers head. The size of the pliers head does not need to extend to the rear side of the gripping bar part, thereby making the pliers head smaller and lighter, making it easier to hold and use. (3) By setting a first tooth segment on the rear side of the pliers head and a second tooth segment on the front side of the second extension, and a matching gear between the first tooth segment and the second tooth segment, the length of the resistance arm of the first-stage lever formed by the second pliers bar is the distance between the center of the gear and the fulcrum (first hinge structure) of the second pliers bar. This is equivalent to shortening the resistance arm of the first-stage lever formed by the second pliers bar by the length corresponding to the gear radius, and extending the power arm of the second-stage lever formed by the pressure bar by the length corresponding to the gear radius, thereby enabling a higher multiple of grip force amplification. Attached Figure Description

[0019] The present invention will be explained in detail below with reference to the accompanying drawings. It should be noted that the drawings are used to provide a further understanding of the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but should not impose any limitation on the implementability of the present invention.

[0020] In the attached diagram: Figure 1 This is a front view of an embodiment of the high-magnification large tool pliers of this utility model, which is easy to hold.

[0021] Figure 2 This is an exploded view of an embodiment of the high-magnification large tool pliers of this utility model, which is easy to hold.

[0022] Figure 3 This is a schematic diagram of the meshing of the gear with the first tooth segment and the second gear in one embodiment of the high-powered large tool pliers of this utility model, which is easy to hold.

[0023] Figure 4 This is a mechanical analysis diagram of an embodiment of the high-magnification large tool pliers of this utility model, which is easy to hold.

[0024] Figure 5 This is a schematic diagram of the structure of different shaped pressure bars in one embodiment of the high-magnification large tool pliers of this utility model, which are easy to hold.

[0025] Figure 6 This is a front view of another embodiment of the high-magnification large tool pliers of this utility model, which is easy to hold.

[0026] Figure 7 for Figure 6 A schematic diagram of the intermediate transition gear and its third and fourth tooth segments.

[0027] Figure 8 This is a front view of another embodiment of the high-magnification large tool pliers of this utility model, which is easy to hold.

[0028] Figure 9 This is a front view of the second clamp bar in another embodiment of the high-magnification large tool pliers of this utility model, which is easy to hold.

[0029] Figure 10 This is a schematic diagram of the structure of different shaped pressure bars in one embodiment of the high-magnification large tool pliers of this utility model, which are easy to hold.

[0030] Figure 11 This is a front view of another embodiment of the easy-to-grip high-amplitude large-format pliers of this utility model, which are crimping pliers.

[0031] Figure 12This is a front view of another embodiment of the easy-to-grip high-magnification large-format pliers of this utility model, which are eyelet pliers.

[0032] Figure 13 This is a front view of another embodiment of the easy-to-grip high-magnification large tool pliers of the present invention, which is a drain hole pliers.

[0033] In the picture: 10. Pliers head, 11. Pliers jaw, 12. First hinge structure, 121. First hinge shaft, 13. Sliding hole, 14. Third hinge structure, 141. Third hinge shaft, 15. Connecting rod, 16. First tooth segment, 17. Screw, 18. Hole spacing limiter, 19. Crossbar. 20. Top part 20, U-shaped buckle 21, roller 22, return spring 23, pin seat 24, transition gear 25, third tooth segment 251, fourth tooth segment 252, movable block push rod 26, lower mold head push rod of buttonhole 27, upper mold head of buttonhole 28, lower mold head push rod of drainage hole 29, upper mold head of drainage hole 291; Pressure bar 30, lever part 31, second plate 311, second extension part 32, second toothed segment 321, first front rod part 33; First clamp 40, second groove 41; Second clamp bar 50, gripping bar portion 51, first groove 511, first extension portion 52, first hinge hole 521, first plate 522, second hinge structure 53, second hinge shaft 531, second front bar portion 54, stop protrusion 55. Gear 60. Detailed Implementation

[0034] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] In one embodiment, a high-powered magnifying glass pliers that is easy to hold is provided. In this embodiment, the easy-to-hold high-powered magnifying glass pliers is a hole puncher. Figure 1-2As shown, this easy-to-grip high-amplification pliers includes a plier head 10, which is used for drilling operations and for mounting other components of the pliers. The plier head 10 has a jaw 11, where the part of the thin sheet material to be drilled is placed. The jaw 11 has a slit structure and is wider on the left and right sides to allow for adjustment of the depth of the thin sheet material placed in the jaw as needed. The lower side of the jaw 11 has an upper pusher 20, which is a circular pusher pin. The upper pusher 20 drills the thin sheet material by pushing upward. At the bottom of the plier head 10, there is a pressure bar 30. The lower end of the upper pusher 20 is located above the front end of the pressure bar 30. The pressure bar 30 is used to apply upward pressure to the upper pusher 20 by lever.

[0036] The bottom of the pliers head 10 is provided with a first pliers bar 40, and a second pliers bar 50 is hinged to the rear side of the pliers head 10. By holding the first pliers bar 40 and the second pliers bar 50 and squeezing them together, the upper top member 20 can be driven to move upward. The second pliers bar 50 includes a gripping rod portion 51 and a first extension portion 52. The first extension portion 52 is a relatively short rod-shaped part. The first extension portion 52 extends forward from the top of the gripping rod portion 51. The front end of the first extension portion 52 is connected to the pliers head 10 through a first hinge structure 12. The connection method of the first hinge structure 12 allows the first extension portion 52 to rotate relative to the pliers head 10.

[0037] The lever 30 includes a lever portion 31 and a second extension portion 32, which is also rod-shaped. The second extension portion 32 extends upward from the rear end of the lever portion 31, in conjunction with... Figure 3 As shown, a first tooth segment 16 is provided on the rear side of the pliers head 10, and a second tooth segment 321 is provided on the front side of the second extension 32. A matching gear 60 is provided between the first tooth segment 16 and the second tooth segment 321. The first tooth segment 16 is located on the lower rear side of the pliers head 10, and the second tooth segment 321 is located on the upper front side of the second extension 32. Figure 3 As shown, Figure 3 The middle section represents the initial meshing state of gear 60 with the first tooth segment 16 and the second tooth segment 321. In the initial state, the front side of gear 60 meshes with the upper end of the first tooth segment 16, and the rear side of gear 60 meshes with the lower end of the second tooth segment 321. This maximizes the utilization of the first tooth segment 16 and the second tooth segment 321, which is beneficial for designing the pliers head 10 and the pressure bar 30 to be more compact.

[0038] Combination Figure 1 As shown, the gear 60 is connected to the second clamp 50 via a second hinge structure 53. By providing the second hinge structure 53, the gear 60 can also rotate as the second clamp 50 is engaged. The gear 60 enables the second clamp 50 to drive the second extension 32 to rotate relative to the second clamp 50.

[0039] Combination Figure 1 As shown, the front part of the lever 31 is connected to the bottom of the pliers 10 via a third hinge structure 14. The connection method of the third hinge structure 14 allows the lever 31 to rotate relative to the bottom of the pliers 10. It should be noted that at least one of the first hinge structure 12, the second hinge structure 53, and the third hinge structure 14 is a sliding connection structure. Here, a sliding connection structure means that the two parts connected by the sliding connection structure can slide relative to each other within a defined range, so as to avoid the first hinge structure 12, the second hinge structure 53, and the third hinge structure 14 forming a stable triangle with the three vertices that prevents them from moving.

[0040] The working principle of this easy-to-grip, high-powered large tool pliers is as follows: (Combined with...) Figure 1-3 As shown, the part of the thin sheet material that needs to be punched is placed in the jaws 11. The first clamp bar 40 and the second clamp bar 50 are held and squeezed together. The second clamp bar 50 rotates downward with the first hinge structure 12 as the fulcrum. At the same time, the gear 60 moves downward with the first extension 52 of the second clamp bar 50. Since the front side of the gear 60 meshes with the first tooth segment 16, the gear 60 is pushed and rotated by the first tooth segment 16 during its downward movement. The rotation of the gear 60 will push the second extension 32 where the second tooth segment 321 is located to swing downward, so that the pressure rod 30 rotates with the third hinge structure 14 as the fulcrum. The front end of the pressure rod 30 applies an upward pressure to the upper pusher 20, so that the upper pusher 20 moves upward and punches a hole in the thin sheet material in the jaws 11.

[0041] The easy-to-grip high-magnification large-format pliers have the following advantages: (1) The lever 30 of the easy-to-grip high-magnification large-format pliers is equivalent to a two-stage lever. The lever 30 includes a lever part 31 and a second extension part 32. The second extension part 32 extends upward at the rear end of the lever part 31. This structural design allows the length of the power arm of the lever 30 to be increased by bending the lever 30 upward at the rear side of the pliers head 10, thereby increasing the force amplification factor of the lever and making full use of the space at the rear side of the pliers head 10. This allows the pliers to be made into a relatively lightweight size while increasing the force amplification factor. (2) The second lever 50 of the high-magnification large tool pliers that is easy to hold is equivalent to a first-level lever. Since the second lever 50 includes a gripping lever 51 and a first extension 52, the first extension 52 extends forward from the top of the gripping lever 51. This structural design makes the fulcrum (first hinge structure 12) of the second lever 50 located on the front side. The fulcrum of the second lever 50 needs to be supported by the pliers head 10. The size of the pliers head 10 does not need to extend to the rear side of the gripping lever 51, so that the pliers head 10 can be made smaller and lighter. (3) By setting a first tooth segment 16 on the rear side of the pliers head 10 and a second tooth segment 321 on the front side of the second extension 32, and a matching gear 60 between the first tooth segment 16 and the second tooth segment 321, the length of the resistance arm of the first-stage lever formed by the second pliers bar 50 is the distance between the center of the gear 60 and the fulcrum (first hinge structure 12) of the second pliers bar 50. This is equivalent to shortening the resistance arm of the first-stage lever formed by the second pliers bar 50 by the length corresponding to the radius of the gear 60, and extending the power arm of the second-stage lever formed by the pressure bar 30 by the length corresponding to the radius of the gear 60, thereby enabling a higher multiple of grip force amplification.

[0042] Furthermore, in another embodiment, such as Figure 1-2 As shown, the first hinge structure 12, the second hinge structure 53, and the third hinge structure 14 of this easy-to-grip high-powered pliers each have a first hinge shaft 121, a second hinge shaft 531, and a third hinge shaft 141, respectively. Furthermore, the first hinge structure 12 includes hinge holes located at the front end of the first extension 52 and corresponding positions on the pliers head 10; the second hinge structure 53 includes hinge holes located at the middle of the first extension 52 and the center of the gear 60; and the third hinge structure 14 includes hinge holes located at the front side of the lever portion 31 and corresponding positions on the lower part of the pliers head 10. Additionally, the gear 60 can also be mounted on the second hinge shaft 531 via bearings.

[0043] Combination Figure 4As shown, a first resistance arm L1 is formed on the second clamp 50 between the axes of the first hinge shaft 121 and the second hinge shaft 531. A second power arm L2 is formed on the pressure rod 30, starting from the axis of the third hinge shaft 141, passing through the axis of the second hinge shaft 531, and extending to the gear 60. The angle between the first resistance arm L1 and the second power arm L2 is between 0° and 5°. Since at least one of the first hinge structure 12, the second hinge structure 53, and the third hinge structure 14 is a sliding connection structure, the angle between the first resistance arm L1 and the second power arm L2 will change slightly during the clamping of the first clamp 40 and the second clamp 50, but the change is controlled within a small range. The angle between the first resistance arm L1 and the second power arm L2 is maintained between 0° and 5°. This small angle allows the force exerted by the first resistance arm L1 on the second power arm L2 to maximize its power for the secondary lever formed by the pressure rod 30.

[0044] Furthermore, in another embodiment, such as Figure 1-3 As shown, the first hinge structure 12 of this easy-to-grip high-magnification pliers is a sliding connection structure, while the second hinge structure 53 and the third hinge structure 14 are both ordinary non-sliding hinge structures connected by a shaft. The first hinge structure 12 includes a sliding hole 13 provided on the pliers head 10, which slopes downward from front to back. The front end of the first extension 52 of the second pliers bar 50 is provided with a first hinge hole 521. The first hinge shaft 121 of the first hinge structure 12 passes through the sliding hole 13 and the first hinge hole 521. This structural form of the first hinge structure 12 allows the first extension 52 to rotate relative to the pliers head 10. At the same time, the first hinge shaft 121 can also slide along the sliding hole 13, preventing the first hinge structure 12, the second hinge structure 53, and the third hinge structure 14 from forming a stable triangle with the three vertices that prevent movement.

[0045] Furthermore, in combination Figure 3-4 As shown, both the first tooth segment 16 and the second tooth segment 321 are arc-shaped tooth segments, and both the first tooth segment 16 and the second tooth segment 321 are centered on the center line of the third hinge shaft 141. The radii of the circles containing the first tooth segment 16 and the second tooth segment 321 are 72mm and 84mm, respectively. This structure ensures that although the relative positions of the first tooth segment 16 and the second tooth segment 321 move during the swinging of the pressure rod 30, their axes remain aligned, thus ensuring that the gear 60 and the first tooth segment 16 and the second tooth segment 321 always remain in mesh.

[0046] Furthermore, in another embodiment, such as Figure 4As shown, the first power arm L3 is formed between the end of the gripping rod 51 of the second lever 50 of the easy-to-grip high-amplification pliers and the axis of the first hinge shaft 121. The length of the first power arm L3 ranges from 150 to 350 mm. In this embodiment, the length of the first power arm L3 is designed to be 252.7 mm. The length of the first resistance arm L1 ranges from 10 to 60 mm. In this embodiment, the length of the first resistance arm L1 is designed to be 20 mm. The length of the second power arm L2 ranges from 30 to 110 mm. In this embodiment, the length of the second power arm L2 is designed to be 78 mm. A second resistance arm L4 is formed on the pressure rod 30 between the axis of the third hinge shaft 141 and the contact point between the upper top member 20 and the front end of the pressure rod 30. The length of the second resistance arm L4 ranges from 5 to 40 mm. In this embodiment, the length of the second resistance arm L4 is designed to be 12.5 mm.

[0047] The theoretical amplification factor of this easy-to-grip, high-magnification large-format pliers is as follows: The second lever 50 is equivalent to a primary lever, and the pressure lever 30 is equivalent to a secondary lever. The amplification factor of the primary lever on the grip force is: 252.7 ÷ 20 ≈ 12.6 times; the amplification factor of the secondary lever on the primary lever is: 78 ÷ 12.5 ≈ 6.2 times; the total amplification factor = primary lever amplification factor × secondary lever amplification factor = 12.6 × 6.2 ≈ 78 times. Therefore, theoretically, this easy-to-grip, high-magnification large-format pliers amplifies the grip force by 78 times, which is very high and provides excellent labor-saving effects.

[0048] Furthermore, in another embodiment, such as Figure 1 As shown, the maximum opening distance L5 between the rear ends of the first jaw 40 and the second jaw 50 of this easy-to-grip high-magnification large-format pliers ranges from 60 to 145 mm. In this embodiment, the maximum opening distance L5 is 120 mm. The stroke range of the upper pusher 20 is 5 to 6 mm. In this embodiment, the stroke of the upper pusher 20 is 5.7 mm. The length from the top of the jaw 10 to the bottom of the first jaw 40 ranges from 150 to 350 mm. In this embodiment, the length from the top of the jaw 10 to the bottom of the first jaw 40 is 275 mm, meaning the total length of this easy-to-grip high-magnification large-format pliers is 275 mm. (Combined with...) Figure 1 As shown, the included angle between the upper end of the gripping rod 51 and the first extension 52 is preferably 50° to 90°. In this embodiment, the included angle between the upper end of the gripping rod 51 and the first extension 52 is 70°. Based on the above-mentioned dimensional data of this easy-to-grip high-magnification pliers, it can be seen that it achieves a large magnification while maintaining a relatively compact size and structure.

[0049] Furthermore, such as Figure 1-2As shown, a hole spacing limiter 18 is provided in the jaw 11. The upper front side of the hole spacing limiter 18 is a baffle that matches the spacing of the jaw 11. The two ear plates at the bottom rear side are provided with elongated holes. The hole spacing limiter 18 is connected to the lower middle part of the jaw 10 by setting bolts in the elongated holes. After the hole spacing limiter 18 is moved back and forth to adjust to a suitable position, it can be positioned by bolts.

[0050] In addition, such as Figure 1-2 As shown, a screw 17 for adjusting the distance between the first clamp 40 and the second clamp 50 is provided on the lever part 31 of the pressure rod 30. The maximum opening distance between the first clamp 40 and the second clamp 50 is adjusted by the screw 17. A screw hole is provided in the middle part of the lever part 31, and the screw 17 is screwed into the screw hole in the middle part of the lever part 31. The front end of the screw 17 abuts against the lower rear end of the clamp head 10. By turning screw 17, the distance between the first clamp bar 40 and the second clamp bar 50 can be finely adjusted. Adjusting by screw 17 has two advantages: first, it allows the distance between the first clamp bar 40 and the second clamp bar 50 to be adjusted to a suitable size according to the user's hand size; second, since there may be some play in the various parts of this easy-to-grip high-amplification large tool pliers during assembly, the stroke of the upper lifting member 20 may have a certain amount of play. By finely adjusting the distance between the first clamp bar 40 and the second clamp bar 50, the stroke of the upper lifting member 20 can be made to be the true stroke, and the stroke fits the feel of the hand.

[0051] Furthermore, in another embodiment, such as Figure 1-2 As shown, the gripping rod 51 of the second clamp bar 50 in this easy-to-grip high-amplification large tool pliers is a groove-shaped rod with a first groove 511 on the inner side. This type of second clamp bar 50 is a sheet metal part with good machining precision. The first extension 52 of the second clamp bar 50 includes first plates 522 respectively disposed on the left and right sides of the top of the gripping rod 51. The first plates 522 on the left and right sides clamp the clamp head 10, ensuring that the first extension 52 has high strength. In other embodiments, the first extension may also be a first plate disposed only on the left or right side of the top of the gripping rod 51.

[0052] like Figure 1-2As shown, the first clamping bar 40 of this easy-to-grip high-amplitude large tool pliers is a groove-shaped bar with a second groove 41 on its inner side. The bottom of the clamping head 10 has a connecting rod portion 15, which is fixedly connected to the top of the second groove 41. Similarly, this first clamping bar 40 is also a sheet metal part with good machining precision. The connecting rod portion 15 is fixedly connected to the top of the second groove 41 by two rivets. The front part of the lever portion 31 of the pressure rod 30 is formed by the second plates 311 on the left and right sides. The connecting rod portion 15 on the lower side of the clamping head 10 passes between the second plates 311 on the left and right sides, so that the connecting rod portion 15 and the pressure rod 30 have a suitable and compact connection structure. In other embodiments, combined with... Figure 5 As shown, the front side of the lever can also be formed by one of the second plates 311 on the left or right.

[0053] In the preceding embodiments, the pressure rod 30 is a solid structure. It is understood that in other embodiments, the pressure rod 30 may also be manufactured as a hollow structure to reduce weight. For example, a groove may be provided on the pressure rod to make it a grooved rod, and then the second tooth segment 321 may be embedded in the corresponding position of the groove of the pressure rod.

[0054] Furthermore, in another embodiment, such as Figure 1-2 As shown, this easy-to-grip high-amplification pliers has a roller 22 at the front end of the pressure bar 30. The roller 22 is hinged between the second plates 311 on the front and rear sides via a pin. The bottom of the upper lifting member 20 abuts against the roller 22. When the front end of the pressure bar 30 is lifted, the roller 22 contacts the bottom of the upper lifting member 20, ensuring that there is always a vertical upward force on the upper lifting member 20. A hole for the upper lifting member 20 to pass through is provided on the lower side of the jaw 11 of the pliers head 10. The bottom of the upper lifting member 20 is provided with a bottom cap. A return spring 23 is sleeved on the upper lifting member 20 between the pliers head 10 and the bottom cap. A needle seat 24 corresponding to the upper lifting member 20 is provided on the top inner side of the jaw 11. The needle seat 24 has a hole corresponding to the needle tip of the upper lifting member 20. After drilling, the return spring 23 can reset the upper lifting member 20, the pressure bar 30, and the second pliers bar 50.

[0055] Furthermore, in another embodiment, the upper pusher 20 and the pressure rod 30 are driven connected in the following manner, as follows: Figure 1-2As shown, a U-shaped buckle 21 is provided at the bottom of the upper push member 20. The U-shaped buckle 21 is inverted. A hole is provided in the middle of the top surface of the U-shaped buckle 21 for the upper push member 20 to pass through upward. A limiting pin cap is provided at the bottom of the upper push member 20. A roller 22 is provided at the front end of the pressure rod 30. The roller 22 is set inside the U-shaped buckle 21. The roller 22 and the U-shaped buckle 21 are hinged together at the front end of the pressure rod 30. The bottom of the upper push member 20 abuts against the roller 22. When the front end of the pressure rod 30 is pushed up, the roller 22 contacts the bottom of the upper push member 20 to ensure that there is always a vertical upward force on the upper push member 20. A hole is provided on the lower side of the jaws 11 of the pliers head 10 for the upper pusher 20 to pass through. A return spring 23 is fitted on the upper pusher 20 between the pliers head 10 and the U-shaped buckle 21. A needle seat 24 corresponding to the upper pusher 20 is provided on the top inner side of the jaws 11. The needle seat 24 has a round hole corresponding to the needle tip of the upper pusher 20. After drilling, the return spring 23 can reset the upper pusher 20, the pressure rod 30, and the second pliers bar 50. In other embodiments, a return spring can also be provided between the first pliers bar and the second pliers bar, with one end of the return spring abutting against the side of the first pliers bar and the other end abutting against the side of the second pliers bar, which can also achieve reset.

[0056] Furthermore, such as Figure 6 and Figure 7 As shown, in this embodiment, the upper pusher 20 and the pressure rod 30 are driven and connected as follows: a third tooth segment 251 is provided at the lower part of the upper pusher 20, and a fourth tooth segment 252 is provided on the front side of the clamp head 10 (or the fourth tooth segment can be provided on the front side of the first clamp bar). A transition gear 25 is provided between the third tooth segment 251 and the fourth tooth segment 252. The transition gear 25 is hinged to the front end of the pressure rod 30. By engaging the first clamp bar 40 and the second clamp bar 50, the front end of the pressure rod 30 can drive the transition gear 25 to move upward. During the movement, the front side of the transition gear 25 meshes with the third tooth segment 251, and the rear side meshes with the fourth tooth segment 252, thereby pushing the upper pusher 20 to move upward. That is, the upper pusher 20 and the pressure rod 30 are driven and connected by gear and tooth segment meshing. A crossbar portion 19 is provided at the bottom front side of the clamp head 10, and a guide hole corresponding to the upper pusher 20 is provided on the crossbar portion 19 to guide the up and down movement of the upper pusher 20.

[0057] Furthermore, in another embodiment, such as Figure 8-9As shown, the head 10 and first bar 40 of this easy-to-grip high-amplitude large-format pliers are an integral structure. Weight-reducing grooves are provided on both sides of the head 10, first bar 40, and second bar 50. This structure, with its cast iron construction, provides high strength. A first front bar portion 33 is located at the front end of the pressure bar 30, with the bottom of the head 10 situated within it. A second front bar portion 54 is located at the top of the second bar 50, and a second extension 32 on the rear side of the pressure bar 30 is located within the second front bar portion 54. The inclusion of the first front bar portion 33 and the second front bar portion 54 facilitates quick assembly of the entire pliers. Stop protrusions 55 are provided on the inner sides of the first bar 40 and the second bar 50 to prevent fingers from being pinched when the first bar 40 and the second bar 50 are fully clamped.

[0058] like Figure 10 As shown, in some embodiments, the first front rod portion 33 can be as follows: Figure 10 The fork shape shown in -C can also be as follows: Figure 10 -A and Figure 10 -B shows a single-sided plate shape provided on the left or right side. Similarly, in some embodiments, the second front rod portion 54 can be a fork shape or a single-sided plate shape provided on the left or right side.

[0059] Furthermore, in another embodiment, the easy-to-grip, high-magnification pliers are flat hole pliers with an elliptical pin as the upper part, and a corresponding pin seat is provided on the top inner side of the jaws. The difference between this embodiment and the previous embodiment lies in the shape of the upper part; in this embodiment, the upper part is elliptical and used for drilling flat holes in thin sheet-like plates, while the pliers in the previous embodiments were used for drilling round holes.

[0060] Furthermore, in another embodiment, such as Figure 11 As shown, this easy-to-grip high-amplitude pliers is a crimping pliers, used for crimping wires and terminals when connecting them. In this embodiment, the upper top member 20 is a crimping movable block, which is located on the lower inner side of the jaw 11. The bottom of the crimping movable block has a movable block top rod 26 that passes through the bottom of the jaw 11, and a spring is also fitted on the movable block top rod 26. The top surface of the crimping movable block has multiple crimping protrusions, and the top inner side of the jaw 11 has corresponding multiple crimping grooves. Different sized crimping protrusions and crimping grooves are used to crimp terminals of different sizes. Figure 11 In this case, the jaw of the easy-to-grip high-amplification large tool pliers and its lower first clamp are separate. It is understood that, as described in the previous embodiment, the jaw of the easy-to-grip high-amplification large tool pliers and its lower first clamp can also be a solid structure that is integrated.

[0061] Furthermore, such as Figure 12 As shown, in another embodiment, the easy-to-grip, high-amplitude pliers are buttonhole pliers. The upper pusher 20 is a lower buttonhole die head. A lower buttonhole die head push rod 27, penetrating the lower part of the jaws 11, is provided at the bottom of the lower buttonhole die head. A spring is also fitted onto the lower buttonhole die head push rod 27. A corresponding upper buttonhole die head 28 is provided at the top inner side of the jaws 11. A buttonhole push rod is provided at the bottom of the upper buttonhole die head 28. A corresponding buttonhole push rod hole is provided in the lower buttonhole die head. The buttonhole pliers are used for punching buttonholes on fabrics, etc. Figure 12 In this case, the jaw of the easy-to-grip high-amplification large tool pliers and its lower first clamp are separate. It is understood that, as described in the previous embodiment, the jaw of the easy-to-grip high-amplification large tool pliers and its lower first clamp can also be a solid structure that is integrated.

[0062] Furthermore, such as Figure 13 As shown, in another embodiment, the easy-to-grip high-amplification pliers are drainage hole pliers. These pliers are used to create drainage holes on illuminated advertising signs that allow water to drip but not light to pass through. This drainage hole is formed by creating a three-dimensional triangular protrusion on the metal panel of the illuminated sign, with a drainage hole formed on one side of the triangular protrusion. In this embodiment, the upper top member 20 is a drainage hole lower mold head. The bottom of the drainage hole lower mold head has a drainage hole lower mold head top rod 29 that passes through the bottom of the pliers jaw 11. A spring is also fitted on the drainage hole lower mold head top rod 29. A drainage hole upper mold head 291 is correspondingly provided on the top inner side of the pliers jaw 11. The bottom of the drainage hole lower mold head has a three-dimensional triangular top cone, and the drainage hole upper mold head 291 has a corresponding slot. Figure 13 In this case, the jaw of the easy-to-grip high-amplification large tool pliers and its lower first clamp are separate. It is understood that, as described in the previous embodiment, the jaw of the easy-to-grip high-amplification large tool pliers and its lower first clamp can also be a solid structure that is integrated.

[0063] It should be noted that the crimping pliers, eyelet pliers, flat hole pliers, and drain hole pliers differ from hole punching pliers in that they use different punching heads. The punching heads of crimping pliers, eyelet pliers, flat hole pliers, and drain hole pliers are pre-existing parts, and their shapes will not be described in detail here. Furthermore, apart from these crimping pliers, eyelet pliers, flat hole pliers, and drain hole pliers, other similar pliers can be used to achieve the same results by replacing the corresponding punching heads.

[0064] It should be noted that, unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains, and terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art. It should also be understood that the above is a description of this disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of this disclosure have been described, those skilled in the art will readily understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this invention. Therefore, all such modifications are intended to be included within the scope of this disclosure as defined in the claims, and will not be detailed here.

Claims

1. A high-powered large-format pliers for easy gripping, comprising a pliers head, a jaw being provided in the pliers head, an upper pusher being provided on the lower side of the jaw, a pressure bar being provided at the bottom of the pliers head, the upper pusher being drivenly connected to the pressure bar, a first pliers bar being provided at the bottom of the pliers head, and a second pliers bar being hinged to the rear side of the pliers head, characterized in that: The second clamp bar includes a gripping rod portion and a first extension portion. The first extension portion extends forward from the top of the gripping rod portion, and the front end of the first extension portion is connected to the clamp head via a first hinge structure. The pressure bar includes a lever portion and a second extension portion. The second extension portion extends upward from the rear end of the lever portion. A first tooth segment is provided on the rear side of the clamp head, and a second tooth segment is provided on the front side of the second extension portion. A matching gear is provided between the first tooth segment and the second tooth segment. The gear is connected to the second clamp bar via a second hinge structure. The front part of the lever portion is connected to the bottom of the clamp head via a third hinge structure. At least one of the first hinge structure, the second hinge structure, and the third hinge structure is a sliding connection structure.

2. The high magnification easy to hold tool forceps according to claim 1, characterized by: The first hinge structure, the second hinge structure, and the third hinge structure each have a first hinge axis, a second hinge axis, and a third hinge axis, respectively. A first resistance arm is formed on the second clamp bar between the axis of the first hinge axis and the axis of the second hinge axis. A second power arm is formed on the pressure bar between the axis of the third hinge axis and the axis of the second hinge axis.

3. The high magnification, easy to hold tool forceps of claim 2, wherein: The first hinge structure is a sliding connection structure, which includes a sliding hole provided on the pliers head. The sliding hole is inclined downward from front to back. The front end of the first extension of the second pliers bar is provided with a first hinge hole. The first hinge shaft of the first hinge structure passes through the sliding hole and the first hinge hole.

4. The high-amplitude large-format pliers for easy gripping according to claim 3, characterized in that: Both the first tooth segment and the second tooth segment are arc-shaped tooth segments, and both the first tooth segment and the second tooth segment are centered on the center line of the third hinge axis.

5. The high magnification easy to hold tool holder of claim 2, wherein: The first power arm is located between the end of the gripping rod of the second clamp and the axis of the first hinge shaft, and the length of the first power arm is 150-350mm; the length of the first resistance arm is 10-60mm; the length of the second power arm is 30-110mm; a second resistance arm is formed on the pressure rod between the axis of the third hinge shaft and the contact point between the upper push member and the front end of the pressure rod, and the length of the second resistance arm is 5-40mm.

6. The high-amplitude large-format pliers for easy gripping according to claim 1, characterized in that: A U-shaped buckle is provided at the bottom of the upper pusher, the U-shaped buckle is hinged to the front end of the pressure rod, and a roller is provided at the front end of the pressure rod, with the bottom of the upper pusher abutting against the roller; a return spring is sleeved on the upper pusher, or a return spring is provided between the first clamping rod and the second clamping rod; or... A third toothed segment is provided at the lower part of the upper pusher, and a fourth toothed segment is provided on the side of the clamp head or the first clamp bar. A transition gear is provided between the third toothed segment and the fourth toothed segment, and the transition gear is hinged to the front end of the pressure rod.

7. The high magnification easy to hold tool forceps of claim 1, wherein: A screw for adjusting the distance between the first clamp bar and the second clamp bar is provided on the lever part of the pressure bar. The screw is screwed into the middle part of the lever part, and the front end of the screw abuts against the clamp head.

8. The high-amplitude large-format pliers for easy gripping according to claim 1, characterized in that: This easy-to-grip, high-amplitude large-format pliers is a hole punch, wherein the upper ejector is a circular ejector pin, a pin seat is correspondingly provided on the top inner side of the jaws, and a hole spacing limiter is provided in the jaws; or... This easy-to-grip, high-amplitude large-format pliers is a flat hole pliers, wherein the upper ejector is an elliptical ejector pin, a pin seat is correspondingly provided on the top inner side of the jaws, and a hole spacing limiter is provided in the jaws; or... This easy-to-grip, high-amplitude large-format pliers is a drain hole pliers. The upper support is a drain hole lower mold head, and a drain hole upper mold head is correspondingly located on the top inner side of the pliers jaws. A hole spacing limiter is provided in the pliers jaws; or... This easy-to-grip, high-amplitude large-format pliers is a crimping pliers, wherein the upper part is a crimping movable block, the top surface of which has multiple crimping protrusions, and the inner top surface of the pliers jaws has corresponding multiple crimping grooves; or... This easy-to-grip, high-amplification large-format pliers is a buttonhole pliers, wherein the upper top part is a lower buttonhole mold head, and a corresponding upper buttonhole mold head is provided on the top of the inner side of the pliers jaws.

9. The high-amplitude large-format pliers for easy gripping according to claim 1, characterized in that: The first clamp bar is a grooved bar with a first groove, and the bottom of the clamp head has a connecting rod portion, which is fixedly connected to the top of the first groove; the gripping rod portion of the second clamp bar is a grooved bar with a second groove, and the second extension portion of the pressure rod is located at the top of the second groove; the gripping rod portion of the second clamp bar is a grooved bar with a second groove on its inner side, and the first extension portion of the second clamp bar includes a first plate located on the left and / or right side of the top of the gripping rod; the front part of the lever portion is formed by a second plate on the left and / or right side, and the connecting rod portion is arranged intersecting with the second plate; or... The first and second clamp bars are solid bars, and the clamp head and the first clamp bar are an integral structure. Weight reduction grooves are provided on the clamp head, the first clamp bar and the second clamp bar respectively. The front end of the pressure bar is provided with a first front rod portion, the bottom end of the clamp head is located in the first front rod portion, the top of the second clamp bar is provided with a second front rod portion, and the second extension portion on the rear side of the pressure bar is located in the second front rod portion.

10. The high magnification easy to hold tool forceps of claim 1, wherein: The maximum opening distance between the rear ends of the first and second clamp bars is 60-145mm; the length from the top of the clamp head to the bottom of the first clamp bar is 150-350mm.

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