Threading terminal

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a threading terminal which comprises a shell, a cover plate, a copper bar and a threading sealing element, the copper bar is installed in a butt joint groove of the shell, the cover plate is detachably arranged at the free end of the shell, and the threading sealing element is arranged at the bottom end of the shell; the threading sealing piece comprises a sealing plate and a threading pipe, the sealing plate is arranged in the threading hole of the shell in an interference clamping mode, the threading pipe is arranged on the bottom face of the sealing plate in a protruding mode, and the threading pipe and the through hole of the sealing plate are coaxially arranged. The cable penetrates through the threading hole of the shell through the threading sealing piece, the sealing plate is clamped in the threading hole of the shell in an interference mode, the sealing performance of the connecting position of the sealing plate and the threading hole is good, the contact area of the sealing plate and the cable is increased through the threading pipe, the sealing performance of the connecting position between the threading sealing piece and the cable is improved, and the service life of the cable is prolonged. According to the double-sealing structure, the sealing performance of the threading position of the threading terminal is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and more specifically to a threading terminal. Background Art

[0002] As a connection tool in the electrical field, the threading terminal is used to wrap and fix the end of the cable and fix it in a certain electrical device to connect the cable and the electrical device and use the cable to power the electrical device. In the existing threading terminal, the cable is installed in the threading hole through an O-ring, and the wire harness is not tightly sealed, making it difficult to ensure the waterproof performance and safety performance of the threading point.

[0003] In summary, how to improve the sealing performance of the threading point of the threading terminal is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a threading terminal, in which the cable is passed through the threading hole of the housing through a threading seal, and the double sealing structure of the sealing plate and the threading tube effectively improves the sealing of the threading point of the threading terminal.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A threading terminal comprises a housing, a cover plate, a copper bar and a threading seal, wherein the copper bar is installed in a docking groove of the housing, the cover plate is detachably arranged at the free end of the housing, and the threading seal is arranged at the bottom end of the housing;

[0007] The threading seal comprises a sealing plate and a threading tube. The sealing plate is interference fit in the threading hole of the shell, the threading tube protrudes from the bottom surface of the sealing plate, and the threading tube is coaxially arranged with the through hole of the sealing plate.

[0008] Preferably, the inner diameter of the threading tube gradually decreases from an end relatively close to the sealing plate to an end relatively far away from the sealing plate.

[0009] Preferably, the threading tube comprises a corrugated tube, and the outer diameter of the corrugated tube gradually decreases from an end relatively close to the sealing plate to an end relatively far from the sealing plate.

[0010] Preferably, a second sealing gasket is provided between the free end of the shell and the cover plate, and the second sealing gasket is provided inside the cover plate.

[0011] Preferably, the outer edge of the sealing plate and the free end of the shell are both provided with limiting ribs to form an annular sealing boss, and the second sealing gasket is provided with a gasket limiting groove that is snap-fitted with the annular sealing boss.

[0012] Preferably, the shell is provided with a glue injection port at the copper busbar mounting surface, and the glue injection port is used for injecting glue to seal the copper busbar.

[0013] Preferably, the copper busbar comprises a vertical section, a horizontal section and a bending section for connecting the vertical section and the horizontal section, and the horizontal section is higher than the bottom end of the vertical section.

[0014] Preferably, one of the outer circumferential surface of the sealing plate and the inner circumferential surface of the threading hole of the shell is provided with a limiting boss, and the other is provided with a limiting groove engaged with the limiting boss, and the limiting boss is interference connected with the limiting groove.

[0015] Preferably, a latch mounting plate for mounting a connecting pin is provided at the free end of the shell, a latch connecting head for mounting the connecting pin is provided at the cover plate, and the latch mounting plate and the latch connecting head are pin-connected.

[0016] The utility model provides a threading terminal, in which the cable is passed through the threading hole of the shell through a threading seal, and the sealing plate is interference-engaged in the threading hole of the shell. The connection between the sealing plate and the threading hole has good sealing performance, and the threading tube increases the contact area between the sealing plate and the cable, thereby improving the sealing performance of the connection between the threading seal and the cable. The above-mentioned double sealing structure effectively improves the sealing performance of the threading part of the threading terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a specific embodiment of the threading terminal provided by the utility model;

[0019] Figure 2 It is a structural diagram of the threading terminal;

[0020] Figure 3 It is a cross-sectional schematic diagram of the threading terminal;

[0021] Figure 4 This is a schematic diagram of the assembly of the housing and copper busbar;

[0022] Figure 5 for Figure 4 A schematic cross-sectional view in a side view direction;

[0023] Figure 6It is a schematic diagram of the assembly of the housing, the threading seal and the cover plate;

[0024] Figure 7 for Figure 6 A schematic cross-sectional view in a side view direction;

[0025] Figure 8 is a schematic cross-sectional view of the housing and the threading seal in the upward direction;

[0026] Fig. 9 is a schematic cross-sectional view of the housing and the threading seal in the side view direction;

[0027] Fig.10 is a schematic diagram of the rotational connection between the housing and the cover plate;

[0028] Fig.11 It is a structural schematic diagram of a threading seal;

[0029] Fig.12 It is a schematic diagram of the structure of the threading seal in another direction.

[0030] Figure 1-Figure 12 middle:

[0031] 01 is a flat wire harness, 02 is a cavity, 1 is a first sealing gasket, 2 is a shell, 21 is a glue filling port, 22 is a limiting rib, 23 is a limiting groove, 24 is a plug mounting plate, 3 is a copper bus, 4 is a threading seal, 41 is a sealing plate, 411 is a limiting rib, 412 is a limiting boss, 42 is a threading tube, 5 is a second sealing gasket, 51 is a gasket limiting groove, 6 is a cover plate, 61 is a plug connector, and 7 is a connecting pin. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The core of the utility model is to provide a threading terminal. The cable is passed through the threading hole of the shell through a threading seal. The double sealing structure of the sealing plate and the threading tube effectively improves the sealing performance of the threading part of the threading terminal.

[0034] The utility model provides a threading terminal, comprising a housing 2, a cover plate 6, a copper bar 3 and a threading seal 4, wherein the copper bar 3 is installed in a docking groove of the housing 2, the cover plate 6 is detachably arranged at the free end of the housing 2, and the threading seal 4 is arranged at the bottom end of the housing 2;

[0035] The threading seal 4 includes a sealing plate 41 and a threading tube 42. The sealing plate 41 is interference fit in the threading hole of the housing 2. The threading tube 42 protrudes from the bottom surface of the sealing plate 41, and the inner control of the threading tube 42 is coaxially arranged with the through hole of the sealing plate 41.

[0036] The housing 2 and the cover plate 6 form the outer shell structure of the threading terminal. Figure 1 The fixed end of the housing 2 is used to connect with the electrical equipment, and the free end on the other side is sealed by the cover plate 6; the housing 2 and the electrical equipment, and the housing 2 and the cover plate 6 are all detachably connected to facilitate the maintenance and replacement of the threading terminal.

[0037] In order to make the connection structure simple and the connection stable, the shell 2 and the electrical equipment, and the shell 2 and the cover 6 are usually connected by bolts; considering that the cover 6 needs to be removed for maintenance and inspection of the threading terminals, in order to prevent the bolts from loosening and losing after disassembly, it is preferred that the cover 6 and the shell 2 are connected by anti-loosening bolts or embedded bolts, which is convenient for the disassembly and maintenance of the cover 6.

[0038] To prevent water from entering the connection between the shell 2 and the electrical equipment, and between the shell 2 and the cover plate 6, a first sealing gasket 1 is provided between the shell 2 and the electrical equipment, and a second sealing gasket 5 is provided between the shell 2 and the cover plate 6. The second sealing gasket 5 is arranged inside the cover plate 6.

[0039] The specific material, structure, shape and size of the first sealing gasket 1 and the second sealing gasket 5 are determined according to actual production needs with reference to the prior art, and will not be elaborated here.

[0040] The copper busbar 3 is used to electrically connect the flat wire harness 01 and the electrical equipment. The copper busbar 3 is installed in the docking groove of the shell 2. The number, structure, size and distribution of the docking groove are determined according to the number and installation requirements of the copper busbar 3 in actual production, and the number of the copper busbar 3 needs to be determined according to the electrical equipment to which the threading terminal is connected.

[0041] The fixed end of the housing 2 used for connecting to the electrical equipment is perpendicular to the bottom end of the housing 2 used for installing the threading seal 4. However, if the copper busbar 3 is vertically bent at 90°, the bending angle of the copper busbar 3 is too large and the production and processing remain unchanged.

[0042] Preferably, the copper busbar 3 can be arranged to include a vertical section, a horizontal section and a bending section for connecting the vertical section and the horizontal section, and the horizontal section is higher than the bottom end of the vertical section, so the angle of the bending section is less than 90°, the bending angle is smaller, and the manufacturing is more convenient.

[0043] Please refer to Figure 3The vertical section of the copper busbar 3 is connected to the flat wire harness 01 by fastening bolts, and the horizontal section of the copper busbar 3 is connected to the wire harness of the electrical equipment by fastening bolts. To prevent the fastening bolts from loosening, the copper busbar 3 is usually filled with glue; to avoid forming a cavity 02 between the copper busbar 3 and the shell 2 during glue filling, preferably, the shell 2 can be provided with a glue filling port 21 at the copper busbar mounting surface, and the glue filling port 21 is used to fill glue and seal the copper busbar 3.

[0044] The threading seal 4 is arranged at the bottom end of the housing 2. The threading seal 4 includes a sealing plate 41 which is interference-fitted in the threading hole of the housing 2. The structure and shape of the sealing plate 41 are determined by the structure and shape of the threading hole of the housing 2. To facilitate processing and assembly, the threading hole of the housing 2 is usually set to a regular geometric shape such as a rectangular hole or a circular hole.

[0045] A downwardly protruding wire tube 42 is provided at the bottom of the sealing plate 41. The flat wire harness 01 passes through the inner hole of the wire tube 42 and the through hole of the sealing plate 41 in turn and is connected to the copper bus 3. Compared with the prior art in which the flat wire harness 01 is installed in the wire hole of the shell 2 through an O-ring, the contact length and contact area between the flat wire harness 01 and the wire threading seal 4 are significantly increased, thereby improving the connection sealing and connection stability between the two.

[0046] The threading seal 4 is mostly configured as a rubber seal, which is not only easy to process and assemble, but also can utilize its adsorption characteristics to better fit and seal with the threading hole of the housing 2 and the flat wire harness 01.

[0047] In order to further improve the sealing performance of the threading tube 42, preferably, the inner diameter of the threading tube 42 can be set to gradually decrease from the end relatively close to the sealing plate 41 to the end relatively far from the sealing plate 41. Therefore, the threading tube 42 is set close to the outer circumference of the flat wire harness 01, reducing the gap between the inner circumference of the threading tube 42 and the outer circumference of the flat wire harness 01, thereby enhancing the sealing and waterproof performance of the connection between the two.

[0048] In this embodiment, the cable is passed through the threading hole of the shell 2 through the threading seal 4, and the sealing plate 41 is interference fit in the threading hole of the shell 2. The connection between the sealing plate 41 and the threading hole has good sealing performance, and the threading tube 42 increases the contact area between the sealing plate 41 and the cable, thereby improving the sealing performance of the connection between the threading seal 4 and the cable. The above-mentioned double sealing structure effectively improves the sealing performance of the threading terminal.

[0049] Preferably, the threading tube 42 may be a corrugated tube, and the outer diameter of the corrugated tube gradually decreases from an end relatively close to the sealing plate 41 to an end relatively far from the sealing plate 41 .

[0050] During assembly, the flat wire harness 01 is passed from bottom to top into the threading seal 4 , and then the flat wire harness 01 is pulled from top to bottom to adjust the length of the flat wire harness 01 exposed from the sealing plate 41 , so as to connect the flat wire harness 01 with the copper bus 3 .

[0051] The above-mentioned reverse installation method can make the inner circumference of the threading tube 42 fit closely with the outer circumference of the flat wire harness 01, which is beneficial to enhance the sealing and waterproof performance of the connection between the two.

[0052] The threading hole at the bottom of the housing 2 can be set as a closed hole or a non-closed hole to facilitate the interference installation of the threading seal 4. When the threading hole at the bottom of the housing 2 is a non-closed hole, preferably, the sealing plate 41 and the free end of the housing 2 can be provided with limiting ribs to form an annular limiting boss, and the second sealing gasket 5 is provided with a gasket limiting groove 51 that is snap-fitted with the annular sealing boss.

[0053] Please refer to Figure 6 and Figure 7 The sealing plate 41 is provided with a limiting rib 411, and the free end of the shell 2 is provided with a limiting rib 22. The limiting rib 411 and the limiting rib 22 can form an annular limiting boss, and the above-mentioned annular limiting boss is clamped with the gasket limiting groove 51 of the second sealing gasket 5, thereby enhancing the sealing performance between the sealing plate 41 and the second sealing gasket 5, and the shell 2 and the second sealing gasket 5.

[0054] Of course, the free ends of the sealing plate 41 and the shell 2 may be provided with limiting grooves, and the second sealing gasket 5 may be provided with limiting ribs matching the limiting grooves. In this case, the thickness requirements for the sealing plate 41 and the shell 2 are relatively high.

[0055] On the basis of the above embodiment, one of the outer circumferential surface of the sealing plate 41 and the inner circumferential surface of the threading hole of the shell 2 can be provided with a limiting boss 412, and the other can be provided with a limiting groove 23 that is snap-fitted with the limiting boss 412, and the limiting boss 412 and the limiting groove 23 are interference connected.

[0056] The specific number, structure, shape and size of the limiting boss 412 and the limiting groove 23 are determined according to the dimensions of the sealing plate 41 and the housing 2 in actual production, and will not be repeated here.

[0057] Please refer to Fig.11 and Fig.12 The outer periphery of the sealing plate 41 is provided with two circumferentially arranged limiting bosses 412, and the upper end surface of one of the limiting bosses 412 is flush with the end of the sealing plate 41 that is relatively far away from the threading tube 42;

[0058] The inner circumferential surface of the threading hole of the housing 2 is provided with two circumferentially arranged limiting grooves 23 , and the limiting grooves 23 are arranged in a one-to-one correspondence with the limiting protrusions 412 .

[0059] In this embodiment, the limiting boss 412 and the limiting groove 23 are connected by interference fit, so that the sealing plate 41 is arranged close to the threading hole of the housing 2, thereby improving the sealing performance between the sealing plate 41 and the threading hole of the housing 2;

[0060] The limiting boss 412 and the limiting groove 23 are arranged in the length direction of the water seepage path, and the two can be snap-fitted to form a U-shaped waterproof structure, so that the length of the water seepage path is increased, thereby enhancing the sealing between the sealing plate 41 and the shell 2.

[0061] In addition, the sealing plate 41 is mostly configured as a rubber seal, and the adsorption characteristics of the rubber seal itself can further reduce the gap between the sealing plate 41 and the housing 2 and enhance the sealing performance.

[0062] On the basis of the above embodiment, the free end of the shell 2 can be provided with a pin mounting plate 24 for installing the connecting pin 7, and the cover plate 6 can be provided with a pin connecting head 61 for installing the connecting pin 7. The pin mounting plate 24 and the pin connecting head 61 are pin-connected, so that the cover plate 6 can rotate around the connecting pin 7 relative to the shell 2. The flip-type design is conducive to the maintenance and disassembly of the threading terminal.

[0063] The specific structure, shape and size of the latch mounting plate 24 and the latch connector 61 are determined according to actual production requirements such as design connection strength, and will not be described in detail here.

[0064] It should be noted that the first and second in the first sealing gasket 1 and the second sealing gasket 5 mentioned in the present application document are only used to distinguish the difference in position and do not contain any limitation on the order.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The threading terminal provided by the utility model is introduced in detail above. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A threading terminal, characterized in that: It comprises a housing (2), a cover plate (6), a copper busbar (3) and a threading seal (4), wherein the copper busbar (3) is installed in a docking groove of the housing (2), the cover plate (6) is detachably arranged at the free end of the housing (2), and the threading seal (4) is arranged at the bottom end of the housing (2); The threading seal (4) comprises a sealing plate (41) and a threading tube (42); the sealing plate (41) is interference fit in the threading hole of the housing (2); the threading tube (42) protrudes from the bottom surface of the sealing plate (41), and the threading tube (42) is coaxially arranged with the through hole of the sealing plate (41).

2. The threading terminal according to claim 1, characterized in that: The inner diameter of the threading tube (42) gradually decreases from an end relatively close to the sealing plate (41) to an end relatively far from the sealing plate (41).

3. The threading terminal according to claim 1, characterized in that: The threading tube (42) comprises a corrugated tube, and the outer diameter of the corrugated tube gradually decreases from an end relatively close to the sealing plate (41) to an end relatively far from the sealing plate (41).

4. The threading terminal according to claim 1, characterized in that: A second sealing gasket (5) is provided between the free end of the shell (2) and the cover plate (6), and the second sealing gasket (5) is arranged inside the cover plate (6).

5. The threading terminal according to claim 4, characterized in that: The outer edge of the sealing plate (41) and the free end of the shell (2) are both provided with limiting ribs to enclose an annular sealing boss, and the second sealing gasket (5) is provided with a gasket limiting groove (51) that is snap-fitted with the annular sealing boss.

6. The threading terminal according to any one of claims 1 to 5, characterized in that: The housing (2) is provided with a glue injection port (21) at the copper busbar installation surface, and the glue injection port (21) is used for injecting glue to seal the copper busbar (3).

7. The threading terminal according to any one of claims 1 to 5, characterized in that: The copper busbar (3) comprises a vertical section, a horizontal section and a bent section used to connect the vertical section and the horizontal section, and the horizontal section is higher than the bottom end of the vertical section.

8. The threading terminal according to any one of claims 1 to 5, characterized in that: One of the outer circumferential surface of the sealing plate (41) and the inner circumferential surface of the threading hole of the shell (2) is provided with a limiting boss (412), and the other is provided with a limiting groove (23) that is snap-fitted with the limiting boss (412), and the limiting boss (412) and the limiting groove (23) are interference-connected.

9. The threading terminal according to any one of claims 1 to 5, characterized in that: The free end of the housing (2) is provided with a latch mounting plate (24) for mounting a connecting pin (7), the cover plate (6) is provided with a latch connecting head (61) for mounting the connecting pin (7), and the latch mounting plate (24) and the latch connecting head (61) are pin-connected.

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