Anti-scalding welding pliers

Abstract

This utility model provides a heat-resistant welding clamp, including a copper conductor, a handle, a heat-insulating pad, and an upper clamp body. The heat-insulating pad is fixed to the bottom of the front end of the handle, the copper conductor is fixed to the top of the heat-insulating pad, and the upper clamp body is rotatably connected to the copper conductor. The copper conductor, the heat-insulating pad, and the handle are fastened together by at least one screw, and a heat-insulating insert is provided between the screw and the handle. A metal ring coaxially arranged with the screw is embedded inside the heat-insulating insert. By embedding the metal ring coaxially arranged with the screw inside the heat-insulating insert, this utility model can effectively prevent the heat-insulating insert from breaking when the screw presses on the heat-insulating insert.

Description

Technical Field

[0001] This utility model relates to the field of welding pliers technology, and more specifically, to a heat-resistant welding pliers. Background Technology

[0002] The function of welding clamps is to hold welding rods and conduct welding current during welding. Currently, welding clamps on the market mainly consist of a copper conductor, a handle, a heat insulation pad, and an upper clamp body. The heat insulation pad is fixed to the bottom of the front end of the handle, the copper conductor is fixed to the top of the heat insulation pad, and the upper clamp body is rotatably connected to the copper conductor. The copper conductor, heat insulation pad, and handle are fastened together by at least one screw. In the above welding clamp structure, since the copper conductor and screw are both metal parts, while the handle is usually made of plastic, and since there is no heat insulation structure between the screw and the handle, when the welding clamp is used, the heat from the welding rod will be conducted to the handle sequentially through the copper conductor and the screw. Over time, this can cause the handle at the screw to overheat and melt, resulting in the screw being unable to reliably fix the handle, which in turn can damage the welding clamp.

[0003] Therefore, in order to effectively prevent the handle located at the screw from overheating and melting, a heat-resistant welding clamp has appeared on the market. This heat-resistant welding clamp includes a copper conductor, a handle, a heat-insulating pad, and an upper clamp body. The heat-insulating pad is fixed to the bottom of the front end of the handle, the copper conductor is fixed to the top of the heat-insulating pad, and the upper clamp body is rotatably connected to the copper conductor. The copper conductor, heat-insulating pad, and handle are fastened together by at least one screw, and a heat-insulating insert made of mica material is provided between the screw and the handle. This insert... After the heat insulation insert is installed, it can effectively prevent the heat of the welding rod from being conducted to the handle through the copper conductor and the screw in sequence, thereby effectively preventing the handle located at the screw from overheating and melting, and thus preventing damage to the welding pliers. However, during the assembly and use of the above-mentioned anti-scalding welding pliers, since the heat insulation insert is made of mica material, it has low structural strength and is easily broken. That is, when the screw is tightened on the heat insulation insert, it is easy to break, resulting in poor reliability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a heat-resistant welding clamp, which can effectively prevent the heat insulation insert from breaking when the screw presses the heat insulation insert after a metal ring coaxially arranged with the screw is embedded inside the heat insulation insert.

[0005] This utility model provides a heat-resistant welding clamp, including a copper conductor, a handle, a heat-insulating pad, and an upper clamp body; the heat-insulating pad is fixed to the bottom of the front end of the handle, the copper conductor is fixed to the top of the heat-insulating pad, and the upper clamp body is rotatably connected to the copper conductor; the copper conductor, the heat-insulating pad, and the handle are fastened together by at least one screw, and a heat-insulating insert is provided between the screw and the handle; a metal ring coaxially arranged with the screw is embedded inside the heat-insulating insert.

[0006] This invention, by embedding a metal ring coaxially with the screw inside the heat insulation insert, provides reliable support for the heat insulation insert, thereby improving its fracture resistance. This effectively prevents the heat insulation insert from breaking when the screw is tightened, thus improving the reliability of the anti-scalding welding clamp.

[0007] In one possible implementation, the copper conductor, heat insulation pad, and grip are fastened together by at least two screws spaced back-to-back. Each screw has a heat insulation insert between it and the grip, and each insert contains a metal ring coaxially aligned with the corresponding screw. This structure, under the tightening action of the two screws, reliably secures the copper conductor, heat insulation pad, and grip together. Furthermore, the heat insulation insert between each screw and the grip effectively prevents heat transfer from the copper conductor to the grip, thus preventing overheating damage. Additionally, the metal ring embedded within each heat insulation insert effectively prevents the insert from breaking due to screw compression during tightening.

[0008] In one possible implementation, the metal rings in two adjacent heat insulation inserts are connected together by a connecting strip. With this structure, the metal rings in the two heat insulation inserts can be connected together by the connecting strip, thereby connecting the two heat insulation inserts together. After the two heat insulation inserts are fixed with screws, the reliability of the heat insulation inserts after being fixed to the grip can be improved.

[0009] In one possible implementation, two adjacent heat insulation inserts are connected as one unit by a connecting part, which is wrapped around the outside of the connecting strip. With this structure, the two heat insulation inserts can be connected as one unit by the connecting part, thereby improving the reliability of the heat insulation inserts after they are fixed to the handle with screws. In addition, the structural strength of the heat insulation inserts can be improved, and the structural strength of the connecting part can be further improved because the connecting part is wrapped around the outside of the connecting strip.

[0010] In one possible implementation, the inner side of the heat insulation insert is provided with a countersunk hole, and screws can be rotatably inserted into the countersunk hole on the heat insulation insert; the heat insulation pad is provided with a through hole corresponding to the screw, and the copper conductor is provided with a threaded hole corresponding to the screw. The screw shank passes through the through hole and is threaded into the threaded hole; after the screw shank passes through the countersunk hole on the heat insulation insert and the through hole on the heat insulation pad in sequence and is threaded into the threaded hole on the copper conductor, reliable fastening of the copper conductor, the heat insulation pad and the handle can be achieved.

[0011] In one possible implementation, the diameter of the through hole is larger than the outer diameter of the screw shank, and the through hole is clearance-fitted with the screw shank. By adopting this structure, heat on the screw can be further blocked from being transferred to the heat insulation pad, thereby further preventing heat from being transferred to the grip through the heat insulation pad, which in turn can further prevent the grip from overheating and being damaged.

[0012] In one possible implementation, the grip is provided with a corresponding recessed hole for the heat insulation insert, and the heat insulation insert is fixed in the recessed hole. By adopting this structure, the heat insulation insert can be reliably fixed together with the grip, and the heat insulation insert and the grip can be positioned during assembly, which facilitates the assembly of the heat insulation insert and the grip and improves the structural stability after the heat insulation insert and the grip are assembled.

[0013] In one possible implementation, an annular protrusion is provided on the outer wall of the lower end of the heat insulation insert, and an annular step extending outward in the radial direction of the insertion hole is provided at the lower end of the insertion hole, with the annular protrusion supported on the annular step. With this structure, after the heat insulation insert is fixed to the grip, the annular protrusion can be supported on the annular step, thereby effectively preventing radial displacement of the heat insulation insert when the screw is tightened to the copper conductor, the heat insulation pad, and the grip. This improves the reliability and firmness of the heat insulation insert and the grip assembly, and also improves the reliability of the screw tightening to the copper conductor, the heat insulation pad, and the grip.

[0014] In one possible implementation, the heat insulation insert is made of mica material; by using mica material to make the heat insulation insert, it has the advantages of good heat insulation effect and low cost; in addition, during the process of making the heat insulation insert from mica material, a metal ring is pre-embedded in the heat insulation insert.

[0015] In one possible implementation, the bottom of the heat insulation pad is provided with a limiting groove, and the bottom of the front end of the handle is fitted into the limiting groove and abuts against the side wall of the limiting groove. With this structure, when the handle and the heat insulation pad are assembled, the bottom of the front end of the handle can be fitted into the limiting groove and abut against the side wall of the limiting groove, thereby achieving the limiting effect on the handle and the heat insulation pad, which can facilitate the assembly of the handle and the heat insulation pad and improve the connection reliability after the handle and the heat insulation pad are assembled. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 for Figure 2 A magnified structural diagram of point A in the middle. Detailed Implementation

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1-3As shown in the figure, this application discloses an anti-scalding welding clamp, including a copper conductor 1, a handle 2, a heat insulation pad 3, and an upper clamp body 4; the heat insulation pad 3 is fixed to the bottom of the front end of the handle 2, the copper conductor 1 is fixed to the top of the heat insulation pad 3, and the upper clamp body 4 is rotatably connected to the copper conductor 1; the copper conductor 1, the heat insulation pad 3, and the handle 2 are fastened together by at least one screw 5, and a heat insulation insert 6 is provided between the screw 5 and the handle 2; a metal ring 7 coaxially arranged with the screw 5 is embedded inside the heat insulation insert 6.

[0022] The copper conductor 1, the heat insulation pad 3, and the grip 2 are fastened together by at least two screws 5 spaced back-to-back. Each screw 5 has a heat insulation insert 6 between it and the grip 2. Each heat insulation insert 6 has a metal ring 7 embedded inside, which is coaxially arranged with the corresponding screw 5. With this structure, the copper conductor, the heat insulation pad, and the grip can be reliably fixed together by the tightening action of the two screws. Since there is a heat insulation insert between each screw and the grip, heat from the copper conductor can be effectively prevented from being transferred to the grip, thus preventing the grip from overheating and being damaged. In addition, since there is a metal ring embedded inside each heat insulation insert, the heat insulation insert can be effectively prevented from breaking due to the pressure of the screw during the tightening process.

[0023] The metal rings 7 in two adjacent heat insulation inserts 6 are connected together by a connecting strip 71. With this structure, the metal rings in the two heat insulation inserts can be connected together by the connecting strip, thus connecting the two heat insulation inserts together. After the two heat insulation inserts are fixed with screws, the reliability of the heat insulation inserts and the grip can be improved.

[0024] Two adjacent heat insulation inserts 6 are connected as one unit by a connecting part 61, which is wrapped around the outside of the connecting strip 71. With this structure, the two heat insulation inserts can be connected as one unit by the connecting part. After the two heat insulation inserts are fixed with screws, the reliability of the heat insulation inserts after being fixed to the handle can be improved. In addition, the structural strength of the heat insulation inserts can be improved. And since the connecting part is wrapped around the outside of the connecting strip, the structural strength of the connecting part can be further improved.

[0025] The inner side of the heat insulation insert 6 is provided with a countersunk hole 62, and the screws 5 can be rotatably inserted into the countersunk hole 62 on the heat insulation insert 6; the heat insulation pad 3 is provided with a through hole 31 corresponding to the screw 5, and the copper conductor 1 is provided with a threaded hole 11 corresponding to the screw 5. The screw shank 51 passes through the through hole 31 and is threaded into the threaded hole 11. After the screw shank passes through the countersunk hole on the heat insulation insert and the through hole on the heat insulation pad in sequence and is threaded into the threaded hole on the copper conductor, the copper conductor, the heat insulation pad and the handle can be reliably fastened.

[0026] The diameter of the through hole 31 is larger than the outer diameter of the screw shank 51 of the screw 5, and the through hole 31 is clearance-fitted with the screw shank 51 of the screw 5. By adopting this structure, the heat on the screw can be further blocked from being transferred to the heat insulation pad, thereby further preventing the heat from being transferred to the grip through the heat insulation pad, which can further prevent the grip from overheating and being damaged.

[0027] The grip 2 is provided with a corresponding insertion hole 21 for the heat insulation insert 6, and the heat insulation insert 6 is fixed in the insertion hole 21. By adopting this structure, the heat insulation insert can be reliably fixed together with the grip, and the heat insulation insert and the grip can be positioned when they are assembled. This facilitates the assembly of the heat insulation insert and the grip and improves the structural stability of the heat insulation insert and the grip after assembly.

[0028] The outer wall of the lower end of the heat insulation insert 6 is provided with an annular protrusion 63, and the lower end of the insertion hole 21 is provided with an annular step 22 that expands outward in the radial direction of the insertion hole 21. The annular protrusion 63 is supported on the annular step 22. With this structure, after the heat insulation insert and the grip are fixed, the annular protrusion can be supported on the annular step. Therefore, when the screw is tightened to the copper conductor, the heat insulation pad and the grip, the radial displacement of the heat insulation insert can be effectively avoided. This improves the reliability and firmness of the heat insulation insert and the grip after assembly, and also improves the reliability of the screw tightening to the copper conductor, the heat insulation pad and the grip.

[0029] The heat insulation insert 6 is made of mica material; by using mica material to make the heat insulation insert, it has the advantages of good heat insulation effect and low cost; in addition, during the process of making the heat insulation insert from mica material, the metal ring is pre-embedded in the heat insulation insert.

[0030] The bottom of the heat insulation pad 3 is provided with a limiting groove 32. The bottom of the front end of the handle 2 is fitted into the limiting groove 32 and abuts against the side wall of the limiting groove 32. With this structure, when the handle and the heat insulation pad are assembled, the bottom of the front end of the handle can be fitted into the limiting groove and abut against the side wall of the limiting groove, thereby achieving the limiting effect on the handle and the heat insulation pad. This facilitates the assembly of the handle and the heat insulation pad and improves the connection reliability after the handle and the heat insulation pad are assembled.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat-resistant welding clamp, comprising a copper conductor (1), a handle (2), a heat-insulating pad (3), and an upper clamp body (4); the heat-insulating pad (3) is fixed to the bottom of the front end of the handle (2), the copper conductor (1) is fixed to the top of the heat-insulating pad (3), and the upper clamp body (4) is rotatably connected to the copper conductor (1); the copper conductor (1), the heat-insulating pad (3), and the handle (2) are fastened together by at least one screw (5), and a heat-insulating insert (6) is provided between the screw (5) and the handle (2); characterized in that: The heat insulation insert (6) has a metal ring (7) that is coaxially arranged with the screw (5) embedded inside.

2. The anti-scalding welding pliers according to claim 1, characterized in that: The copper conductor (1), the heat insulation pad (3) and the handle (2) are fastened together by at least two screws (5) that are spaced apart in front and behind. Each screw (5) is provided with a heat insulation insert (6) between it and the handle (2). Each heat insulation insert (6) has a metal ring (7) embedded inside it that is coaxially arranged with the screw (5) at the corresponding position.

3. The anti-scalding welding pliers according to claim 2, characterized in that: The metal rings (7) in two adjacent heat insulation inserts (6) are connected together by a connecting strip (71).

4. The anti-scald welding tongs of claim 3, wherein: Two adjacent heat insulation inserts (6) are connected together by a connecting part (61), which wraps around the outside of the connecting strip (71).

5. The anti-scald welding tongs of any of claims 1-4, wherein: The inner side of the heat insulation insert (6) is provided with a countersunk hole (62), and the screws (5) can be rotatably inserted into the countersunk hole (62) on the heat insulation insert (6); the heat insulation pad (3) is provided with a through hole (31) corresponding to the screw (5), and the copper conductor (1) is provided with a threaded hole (11) corresponding to the screw (5). The screw (51) of the screw (5) passes through the through hole (31) and is threaded into the threaded hole (11).

6. The anti-scald welding tongs of claim 5, wherein: The diameter of the through hole (31) is larger than the outer diameter of the screw portion (51) of the screw (5), and the through hole (31) is clearance-fitted with the screw portion (51) of the screw (5).

7. The anti-scald welding tongs according to any of claims 1-4 or 6, wherein: The grip (2) is provided with a corresponding hole (21) for the heat insulation insert (6), and the heat insulation insert (6) is fixed in the hole (21).

8. The anti-scald welding tongs of claim 7, wherein: The outer wall of the lower end of the heat insulation insert (6) is provided with an annular protrusion (63), and the lower end of the hole (21) is provided with an annular step (22) that extends outward in the radial direction of the hole (21), and the annular protrusion (63) is supported on the annular step (22).

9. The anti-scalding welding pliers according to any one of claims 1-4 or 6, characterized in that: The heat insulation insert (6) is made of mica material.

10. The anti-scald welding tongs of any of claims 1-4 or 6, wherein: The bottom of the heat insulation pad (3) is provided with a limiting groove (32), and the bottom of the front end of the handle (2) is fitted into the limiting groove (32) and abuts against the side wall of the limiting groove (32).

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