Lightweight punch pliers

Abstract

The utility model discloses a light and handy punch pliers to solve the technical problem of inconvenient adjustment and inaccurate punching position of the existing punch pliers. The utility model discloses a pliers head, handle, pliers head connecting piece, the pliers head connecting piece includes the first crank and the second crank rotatable connection in the middle part, the handle includes the first handle of connecting in the first crank end and the second handle of connecting in the second crank end, and the front end of first crank is provided with the connecting hole, and the pliers head includes the pliers mouth in the upper part and the connecting column in the lower part, and the pliers mouth includes the upper jaw part and the lower jaw part, and the connecting column is connected on the lower jaw part, the connecting hole rotatable connection of connecting column and first crank, still be connected with the positioning piece for locking the pliers head on the connecting column. The utility model has the advantages of convenient adjustment, light and handy structure and high stability.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, specifically to a lightweight drilling pliers. Background Technology

[0002] Hole punch pliers are specialized tools used for punching holes in various sheet materials such as sheet metal and plastic sheets. They feature a punch; when punching, the handle is gripped and pressed, causing the punch to impact the sheet material and complete the punching action. The applicant's prior patent discloses a hole punch pliers comprising a pliers head, two hinged handles, a punching pin on the pliers head, and a curved connecting rod. The pliers head includes an upper body and a lower curved tail. The curved connecting rod and the curved tail are intersected and hinged at a first hinge point, with the top of the curved connecting rod located at the bottom of the punching pin. The two handles are hinged at their tops to a second hinge point. The lower end of the curved connecting rod is hinged to one of the handles below the second hinge point, and the lower end of the curved tail is hinged to the other handle below the second hinge point. However, in practice, in some situations, the hole punch pliers cannot fully enter confined spaces, making punching difficult. Furthermore, maintaining consistent punching position is challenging during normal punching. Utility Model Content

[0003] This invention provides a lightweight hole punch pliers to solve the technical problems of inconvenient adjustment and inaccurate punching position of existing hole punch pliers.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] Design a lightweight hole punch pliers, including a pliers head, a handle, and a pliers head connector. The pliers head connector includes a first crank and a second crank rotatably connected in the middle. The handle includes a first handle connected to the end of the first crank and a second handle connected to the end of the second crank. The front end of the first crank is provided with a connecting hole. The pliers head includes jaws located at the upper part and a connecting post located at the lower part. The jaws include an upper jaw and a lower jaw. The connecting post is connected to the lower jaw. The connecting post and the connecting hole of the first crank are rotatably connected. A positioning element is also connected to the connecting post for locking the pliers head. A punch hole communicating with the jaws is provided inside the connecting post. A punch seat is provided on the upper jaw of the jaws. The front end of the second crank is connected with a punch that matches the punch hole and the punch seat.

[0006] Furthermore, the first crank includes a first horizontal portion and a first bent portion, a connecting hole is disposed in the first horizontal portion, and the end of the first bent portion is hinged to the first handle.

[0007] Furthermore, the first bend of the first crank has a zigzag end at its end, and the upper part of the first handle is provided with a hinge, which is hinged to the end of the zigzag end, and the front end of the zigzag end abuts against the top of the first handle.

[0008] Furthermore, the second crank includes a second horizontal portion and a second bent portion. The front end of the second horizontal portion is connected to the punch, and the end of the second bent portion is hinged to the upper part of the second handle. A stepped portion is provided on the second bent portion, and the stepped portion abuts against the top end of the second handle.

[0009] Furthermore, the angle between the first horizontal portion and the first bent portion is smaller than the angle between the second horizontal portion and the second bent portion.

[0010] Furthermore, the first handle and the second handle are rod-shaped with grooved portions, and the first crank and the second crank are connected within the grooved portions.

[0011] Furthermore, the upper parts of the first handle and the second handle are hinged together.

[0012] Furthermore, the front end of the second crank is connected to two inverted U-shaped connectors, a roller is provided in the middle, a snap-fit ​​part is provided at the bottom of the punch, and a snap-fit ​​hole is provided on the inverted U-shaped connector to cooperate with the snap-fit ​​part. The bottom of the punch abuts against the roller.

[0013] Furthermore, the connecting post has an external thread, and the connecting post and the connecting hole are threadedly connected. The positioning element is a positioning ring with an internal thread. The internal thread of the positioning ring and the external thread of the connecting post are in opposite directions, so that the connecting post can drive the positioning ring to rotate in the forward direction, while the positioning ring can rotate in the reverse direction around the positioning post.

[0014] Furthermore, the jaws are provided with a punching and positioning component, which is either a retractable limiting post located at the rear of the jaws and connected to the inside of the jaws, or a U-shaped limiting piece connected to the side of the jaws.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] 1. This utility model allows the punching angle of the punching pliers to be adjusted according to actual conditions by rotatably connecting the pliers head to the first crank, making it convenient to punch holes even when there are obstacles.

[0017] 2. This utility model has a retractable limiting post in the jaws, which can determine the drilling position and make the drilling more consistent.

[0018] 3. This utility model features a grooved handle that hinges two cranks into the groove of the handle, with the top of the handle abutting against the cranks, resulting in greater stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the lightweight hole punch pliers of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the lightweight hole punch pliers head of this utility model.

[0021] Figure 3 This is a schematic diagram of the first crank of the lightweight hole punch pliers of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the second crank of the lightweight hole punch pliers of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the first handle of the lightweight hole punch pliers of this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the lightweight hole punch limiter of this utility model.

[0025] In the figure, the components are: 1. Pliers head; 11. Pliers jaw; 111. Upper jaw; 112. Lower jaw; 113. Punch seat; 12. Connecting post; 121. Positioning component; 122. Punch hole; 21. First crank; 211. First horizontal part; 212. First bent part; 213. Connecting hole; 214. Folded end; 22. Second crank; 221. Second horizontal part; 222. Second bent part; 223. Stepped part; 31. First handle; 311. Hinge part; 32. Second handle; 41. Punch; 42. Inverted U-shaped connector; 43. Roller; 44. Spring return component; 45. Limiting post; 46. Locking nut; 47. Limiting piece; 471. Front end plate. Detailed Implementation

[0026] The specific embodiments of this utility model will be described below with reference to the accompanying drawings and examples. However, the following examples are only used to illustrate this utility model in detail and do not limit the scope of this utility model in any way.

[0027] Example 1: A lightweight hole punch pliers, see Figures 1 to 4The pliers include a pliers head 1, a handle, and a pliers head connector. The pliers head connector includes a first crank 21 and a second crank 22 rotatably connected at their middle portions. The handle includes a first handle 31 connected to the end of the first crank 21 and a second handle 32 connected to the end of the second crank 22. A vertical connecting hole 213 is provided at the front end of the first crank 21. The pliers head 1 includes jaws 11 at the upper portion and a connecting post 12 at the lower portion. The jaws 11 include an upper jaw portion 111 and a lower jaw portion 112. The connecting post 12... The connecting post 12 and the connecting hole 213 of the first crank 21 are rotatably connected to the lower jaw 112. The connecting post 12 is also connected to a positioning member 121 for locking the pliers head 1. The connecting post 12 is provided with a punch hole 122 that communicates with the jaw 11. The upper jaw 111 of the jaw 11 is provided with a punch seat 113. The front end of the second crank 22 is connected to a punch 41 that matches the punch hole 122 and the punch seat 113. The cross-section of the punch 41 can be circular, elliptical, polygonal, or other shapes.

[0028] Specifically, the first crank 21 includes a first horizontal portion 211 and a first bent portion 212. A connecting hole 213 is disposed in the first horizontal portion 221, and the end of the first bent portion 222 is hinged to the first handle 31. The connecting post 12 of the pliers head 1 is threadedly connected to the connecting hole 213 of the first crank 21. The positioning member 121 is a positioning ring with internal threads. The direction of the internal thread of the positioning member 121 is opposite to the direction of the external thread of the connecting post 12, so that the connecting post 12 can drive the positioning ring 121 to rotate in the forward direction, while the positioning ring 121 can rotate in the reverse direction around the positioning post. When the positioning ring 121 rotates in the reverse direction, it moves upward along the connecting post 12 away from the upper surface of the first horizontal portion 221. At this time, the pliers head 1 can rotate at an angle. When the positioning ring 121 rotates in the forward direction to press against the upper surface of the first horizontal portion 221, the pliers head 1 is locked. The drilling angle of the pliers head 1 is adjusted in the above manner. The first bending part 212 has a folded end 214 at its end, and the upper part of the first handle 31 is provided with a hinge part 311, which is hinged to the end of the folded end 214, and the front end of the folded end 214 abuts against the top end of the first handle 31.

[0029] The second crank 22 includes a second horizontal portion 221 and a second bent portion 222. The front end of the second horizontal portion 221 is connected to a punch 41. The end of the second bent portion 222 is hinged to the upper part of the second handle 32. A stepped portion 223 is provided on the second bent portion 222, and the stepped portion 223 abuts against the top end of the second handle 32. The bending angle of the first crank 21 is smaller than the bending angle of the second crank 22. In this embodiment, the bending angle of the first crank 21 is close to a right angle, and the bending angle of the second crank 22 is an obtuse angle.

[0030] The first handle 31 and the second handle 32 are rod-shaped with grooved portions. The first crank 21 and the second crank 22 are connected inside the grooved portions. The upper parts of the first handle 31 and the second handle 32 are hinged. The grooved handle design can reduce the weight of the punching pliers and improve stability.

[0031] The front ends of the second crank 22 are connected to the two sides of the inverted U-shaped connector 42. The middle part of the second crank 22 is provided with a roller 43. The bottom of the punch 41 is provided with a snap-fit ​​part as the punch head. The inverted U-shaped connector 42 is provided with a snap-fit ​​hole that cooperates with the snap-fit ​​part. The bottom of the punch 41 abuts against the roller 43. A spring return part 44 is also provided between the inverted U-shaped connector 42 and the lower surface of the first crank 21 and is sleeved on the punch 41.

[0032] To position the drill hole, a retractable limiting post 45 is provided at the rear of the jaw 11, extending into the interior of the jaw 11. A locking nut 46 is also provided on the limiting post 45. The limiting post 45 is threaded onto the jaw 11, and the locking nut 46 has a reverse thread. After loosening the locking nut 46, the limiting post 45 rotates inward or outward, and the end of the limiting post 45 is the drilling position. After tightening the locking nut 46, the limiting post 45 is fixed. The above-mentioned drilling positioning structure can also be... Figure 6 The limiting piece 47 shown is used to fix the slots on both sides of the limiting piece 47 to the side of the jaw 11 by screws or pins. The front plate 471 is located inside the jaw 11 as the position for drilling.

[0033] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will understand that, without departing from the spirit of the present invention, various specific parameters in the above embodiments can be changed to form multiple specific embodiments, all of which are common variations of the present invention, and will not be described in detail here.

Claims

1. A lightweight hole punch, characterized in that: The pliers include a pliers head, a handle, and a pliers head connector. The pliers head connector includes a first crank and a second crank rotatably connected at the middle. The handle includes a first handle connected to the end of the first crank and a second handle connected to the end of the second crank. A connecting hole is provided at the front end of the first crank. The pliers head includes jaws located at the upper part and a connecting post located at the lower part. The jaws include an upper jaw and a lower jaw. The connecting post is connected to the lower jaw. The connecting post and the connecting hole of the first crank are rotatably connected. A positioning element is also connected to the connecting post for locking the pliers head. A punch hole communicating with the jaws is provided inside the connecting post. A punch seat is provided on the upper jaw of the jaws. A punch matching the punch hole and punch seat is connected to the front end of the second crank.

2. The lightweight hole punch pliers according to claim 1, characterized in that: The first crank includes a first horizontal part and a first bent part, a connecting hole is disposed in the first horizontal part, and the end of the first bent part is hinged to the first handle.

3. The lightweight hole punch pliers according to claim 2, characterized in that: The first crank has a folded end at the end of the first bend, and the upper part of the first handle is provided with a hinge, which is hinged to the end of the folded end, and the front end of the folded end abuts against the top of the first handle.

4. The lightweight hole punch pliers according to claim 2, characterized in that: The second crank includes a second horizontal part and a second bent part. The front end of the second horizontal part is connected to the punch. The end of the second bent part is hinged to the upper part of the second handle. The second bent part is provided with a stepped part, and the stepped part abuts against the top end of the second handle.

5. The lightweight hole punch pliers according to claim 4, characterized in that: The angle between the first horizontal portion and the first bent portion is smaller than the angle between the second horizontal portion and the second bent portion.

6. The lightweight hole punch pliers according to claim 1, characterized in that: The first handle and the second handle are rod-shaped with grooved portions, and the first crank and the second crank are connected within the grooved portions.

7. The lightweight hole punch pliers according to claim 1, characterized in that: The upper parts of the first handle and the second handle are hinged together.

8. The lightweight hole punch pliers according to claim 1, characterized in that: The second crank has inverted U-shaped connectors on both sides of its front end, a roller in the middle, a snap-fit ​​part at the bottom of the punch, and snap-fit ​​holes on the inverted U-shaped connector that mate with the snap-fit ​​part. The bottom of the punch abuts against the roller.

9. The lightweight hole punch pliers according to claim 1, characterized in that: The connecting post has an external thread, and the connecting post and the connecting hole are threadedly connected. The positioning element is a positioning ring with an internal thread. The internal thread of the positioning ring and the external thread of the connecting post are in opposite directions, so that the connecting post can drive the positioning ring to rotate in the forward direction, while the positioning ring can rotate around the positioning post in the reverse direction.

10. The lightweight hole punch pliers according to claim 1, characterized in that: The jaws are provided with a punching and positioning component, which is either a retractable limiting post located at the rear of the jaws and connected to the inside of the jaws, or a U-shaped limiting piece connected to the side of the jaws.

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