Binding post for electric melting pipe fitting

Abstract

The utility model discloses a binding post for an electric melting pipe fitting, which comprises a joint part, a supporting part and a wiring part which are sequentially arranged from the head end to the tail end, a wiring hole is formed in the middle of the wiring part, a clamping part is arranged at the tail end of the wiring part, and a through hole communicated with the wiring hole is formed in the middle of the clamping part. A plurality of cracks communicating with the internal penetrating hole are evenly and vertically formed in the side wall of the clamping part, and an extrusion block is arranged on the portion, between every two adjacent cracks, of the outer wall of the clamping part. According to the binding post for the electric melting pipe fitting, a resistance wire can be conveniently connected with the binding post, the resistance wire is not prone to being damaged, and the welding effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrofusion fittings, and in particular to a terminal block for electrofusion fittings. Background Technology

[0002] Electrofusion fittings are plastic pipe fittings that can be connected by melting the material using the temperature generated by an electric current. The terminals are installed inside a junction box on the side wall of the electrofusion fitting and are used to connect the electrofusion welding machine and the resistance wire. Conventional terminals connect the resistance wire in a wound manner, which can easily damage the resistance wire and affect the welding effect of the electrofusion fitting. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a terminal block for electrofusion fittings, which facilitates the connection of resistance wires to the terminal block, minimizes damage to the resistance wires, and ensures welding quality.

[0004] The technical solution of this utility model is as follows:

[0005] A terminal block for an electrofusion fitting includes a connector, a support, and a terminal block arranged sequentially from one end to the other. The terminal block has a terminal hole in the middle and a clamping part at the end. The clamping part has a through hole in the middle that connects to the terminal hole. Multiple vertical slits that connect to the internal through holes are evenly and vertically formed on the side wall of the clamping part. An extrusion block is provided on the outer wall of the clamping part between two adjacent slits.

[0006] In a further technical solution, the wiring hole is a blind hole, with the bottom of the hole extending to the inside of the connector.

[0007] In a further technical solution, barbed teeth are provided on the outer wall of the wiring part.

[0008] In a further technical solution, the support part is a disc-shaped structure with a diameter larger than that of the connector part and the wiring part, and the outer edge of the support part is arc-shaped.

[0009] In a further technical solution, the joint portion and the support portion have an arc-shaped transition.

[0010] In a further technical solution, the end edge of the connector is rounded.

[0011] The beneficial effects of this utility model are:

[0012] 1. When installing this terminal, the resistance wire can be passed through the through hole into the wiring hole. When the terminal is installed into the wiring tube of the electrofusion fitting, the inner wall of the wiring tube can be squeezed by the extrusion block. Due to the existence of the gap, the side wall of the clamping part has a closing space. The closing clamping wall can clamp the resistance wire, making the connection stable, not easy to damage the resistance wire, and ensuring the welding effect.

[0013] 2. The wiring hole has a large opening depth, which saves raw materials and reduces costs without affecting the normal use of the terminal;

[0014] 3. The barbed teeth on the outer wall of the wiring section can be interference-fitted with the wiring tube, so that the wiring post is installed firmly and is not easy to fall out. Attached Figure Description

[0015] Figure 1 This is an external schematic diagram of the terminal block for the electrofusion fitting described in this embodiment of the utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of the terminal block for the electrofusion fitting described in this embodiment of the utility model;

[0017] Figure 3 This is a partial schematic diagram of the wiring post for the electrofusion fitting described in this embodiment of the utility model being installed on the electrofusion fitting.

[0018] Explanation of reference numerals in the attached figures:

[0019] 100. Terminal block; 110. Connector; 120. Support; 130. Wiring part; 131. Wiring hole; 132. Barb; 140. Clamping part; 141. Through hole; 142. Gap; 143. Extrusion block; 200. Terminal tube; 210. Mounting hole. Detailed Implementation

[0020] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] Example:

[0022] like Figures 1-3 As shown, a terminal block for an electrofusion fitting includes a connector 110, a support 120, and a terminal block 130 arranged sequentially from one end to the other. The terminal block 130 has a terminal hole 131 in the middle for inserting a resistance wire. The terminal block 130 has a clamping part 140 at its end. The clamping part 140 has a through hole 141 in the middle that connects to the terminal hole 131. Four vertically spaced slits 142 that connect to the internal through hole 141 are evenly and vertically spaced on the side wall of the clamping part 140. An extrusion block 143 is provided on the outer wall of the clamping part 140 between two adjacent slits 142. The extrusion block 143 can be a ball-shaped protrusion, which has low resistance during extrusion and is easy to install. The support 120 is a disc structure with a diameter larger than that of the connector 110 and the terminal block 130. The outer edge of the support 120 is arc-shaped, which facilitates the entry of the support 120 into the terminal cylinder 200.

[0023] The terminal 100 is used to install inside the terminal sleeve 200 provided on the side wall of the electrofusion fitting. The terminal sleeve 200 includes three mounting holes 210 of different diameters arranged coaxially. The diameter of each mounting hole 210 decreases sequentially along the direction closer to the inside of the electrofusion fitting, respectively matching the support part 120, the wiring part 130 and the clamping part 140. A step is formed at the junction of the three mounting holes 210. The three mounting holes 210 can be divided into a first hole section, a second hole section and a third hole section according to the diameter from large to small. The outer side of the support part 120 can fit against the inner wall of the first hole section and is supported by the corresponding step. The wiring part 130 is interference-fitted with the second hole section. The pressing block 143 of the clamping part 140 can press against the third hole section.

[0024] The working principle of the above technical solution is as follows:

[0025] When the terminal 100 is installed, the resistance wire can be passed through the through hole 141 into the wiring hole 131. When the terminal 100 is installed into the wiring sleeve 200 of the electrofusion fitting, the inner wall of the wiring sleeve 200 can be squeezed by the extrusion block 143. Due to the existence of the gap 142, the side wall of the clamping part 140 has a closing space. The closing clamping wall can clamp the resistance wire, and the connection is stable. Compared with winding the resistance wire on the outside of the terminal 100, it is not easy to damage the resistance wire and ensure the welding effect.

[0026] In another embodiment, such as Figure 2 As shown, the terminal block 100 is made of brass, and the wiring hole 131 is a blind hole, with the bottom of the hole extending to the inside of the connector 110.

[0027] The large opening depth of the wiring hole 131 saves raw materials and reduces costs without affecting the normal use of the terminal 100.

[0028] In another embodiment, such as Figure 1-2 As shown, the outer wall of the wiring part 130 is provided with multiple barbed teeth 132.

[0029] The barbed teeth 132 on the outer wall of the wiring part 130 can be interference-fitted with the second hole section of the wiring tube 200, so that the terminal 100 is installed firmly and is not easy to fall out.

[0030] In another embodiment, such as Figure 1-2 As shown, there is an arc transition between the connector 110 and the support 120, and the thickness of the arc transition is greater than that of other parts of the connector 110; the end edge of the connector 110 is rounded.

[0031] The joint portion 110 is not easily bent relative to the support portion 120, and the rounded corners at the end of the joint portion 110 facilitate connection to the electrofusion welding machine.

[0032] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A terminal block for an electrofusion fitting, comprising a connector portion, a support portion, and a terminal portion arranged sequentially from one end to the other, wherein a terminal hole is provided in the middle of the terminal portion, characterized in that, The end of the wiring part is provided with a clamping part, the middle of the clamping part is provided with a through hole that connects to the wiring hole, and multiple vertical slits that connect to the internal through hole are evenly and vertically opened on the side wall of the clamping part. A pressing block is provided on the outer wall of the clamping part between two adjacent slits.

2. The terminal block for electrofusion fittings according to claim 1, characterized in that, The wiring hole is a blind hole, with the bottom of the hole extending to the inside of the connector.

3. The terminal block for electrofusion fittings according to claim 1, characterized in that, The outer wall of the wiring part is provided with barbed teeth.

4. The terminal block for electrofusion fittings according to claim 1, characterized in that, The support part is a disc-shaped structure with a diameter larger than that of the connector and wiring part, and the outer edge of the support part is arc-shaped.

5. The terminal block for electrofusion fittings according to claim 4, characterized in that, The joint and the support have an arc-shaped transition.

6. The terminal block for electrofusion fittings according to claim 1, characterized in that, The end edges of the connector are rounded.

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