An assembly wrench for a direct-insertion copper-aluminum connector and its assembly method

Abstract

This invention discloses an assembly wrench for a through-hole copper-aluminum connector and its assembly method. The assembly wrench includes a handle, one end of which is connected to a first wrench head that mates with the clamping plastic nut of the through-hole copper-aluminum connector, and the other end of which is connected to a second wrench head. The second wrench head also has a positioning groove, which matches the plug at the male end or the slot at the female end of the through-hole copper-aluminum connector. This assembly wrench for through-hole copper-aluminum connectors, through the structural design of the first wrench head, the second wrench head, and the positioning groove that mate with the through-hole copper-aluminum connector, as well as the design of multiple inspection grooves, integrates the crimping of aluminum cables, the assembly and tightening of copper-aluminum connectors, and the inspection of each assembly step. It is convenient and quick to use, and is less likely to damage the through-hole copper-aluminum connector, making it highly practical.

Description

Technical Field

[0001] This invention relates to the field of copper-aluminum connector accessories, and in particular to an assembly wrench for a direct-insertion copper-aluminum connector and its assembly method. Background Technology

[0002] A through-hole copper-aluminum connector for cables includes a male end and a female end. One end of the male end has a plug, and the other end has a male connector. The end of the male connector facing the plug is a copper tube, and the other end is an aluminum tube for crimping with an aluminum cable. Figure 1 and 2 As shown; one end of the female terminal has a slot that mates with the male terminal's connector, and the other end has a female connector. The end of the female connector facing the slot is a copper tube, and the other end is an aluminum tube that is crimped to the aluminum cable, as shown. Figure 3 and 4 As shown. After both the male and female ends of the aluminum cable are crimped, the connectors and slots are used to achieve a plug-in connection, avoiding electrochemical corrosion between copper and aluminum. The connection relationship between the male connector, female connector, and the two aluminum cables after connection is as follows. Figure 5 As shown.

[0003] While the aforementioned direct-insertion copper-aluminum connectors offer advantages such as easy on-site plugging and unplugging of the copper ends, their operation suffers from drawbacks. These include issues with the crimping specifications of the aluminum tube and cable at the male or female ends, the tightness of the crimping nut between the male or female ends and the housing, and the insertion and disassembly of the male and female ends. These drawbacks include inadequate crimping and tightening, substandard connections, and inconvenient disassembly. On one hand, these issues affect the performance of the direct-insertion copper-aluminum connectors. On the other hand, these operations typically require the use of multiple tools, which are inconvenient to carry and locate, and can easily damage the male or female ends of the copper-aluminum connectors. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide an assembly wrench and assembly method for a direct-insertion copper-aluminum connector, which has the functions of assisting the male and female ends of the direct-insertion copper-aluminum connector in crimping, fixing and disassembling with aluminum cables, and detecting the crimping and positioning effects, thereby solving the above-mentioned problems existing in the background art.

[0005] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide an assembly wrench for a through-hole copper-aluminum connector, including a handle, one end of the handle is connected to a first wrench head that mates with the clamping plastic nut of the through-hole copper-aluminum connector, and the other end of the handle is connected to a second wrench head, the second wrench head also having a positioning groove, the positioning groove matching the plug of the male end or the slot of the female end of the through-hole copper-aluminum connector.

[0006] In a preferred embodiment of the present invention, the positioning groove is a cylindrical structure that passes through the second wrench, with a baffle at one end that matches the structure of the plug, and ribs on the inner wall of the other end that match the structure of the slot.

[0007] In a preferred embodiment of the present invention, the first wrench head is an open-type Phillips head, and the second wrench head is a U-shaped wrench head.

[0008] In a preferred embodiment of the present invention, a male end assembly detection groove is provided on one side of the handle, and a female end assembly detection groove is provided on the other side.

[0009] In a preferred embodiment of the present invention, the depths of the male end assembly detection groove and the female end assembly detection groove are less than the radius of the clamping plastic nut.

[0010] In a preferred embodiment of the present invention, one side of the handle is provided with a stripping size detection groove and a crimping distance detection groove.

[0011] In a preferred embodiment of the present invention, both the wire stripping size detection groove and the crimping distance detection groove are perpendicular to the axial direction of the handle.

[0012] In a preferred embodiment of the present invention, at least one side of the handle is further provided with a crimping width detection groove and a crimping height detection groove.

[0013] In a preferred embodiment of the present invention, the through-hole copper-aluminum connector includes a male end and a female end. The male end includes a male connector, a clamping plastic nut, a male housing, and a plug. The plug is fixed to one end of the male housing, and the clamping plastic nut is threaded to the other end of the male housing. The male connector is built into the male housing, with its copper tube end contacting the plug and its aluminum tube end facing the clamping plastic nut, for connection with an aluminum cable. The female end includes a female connector, a clamping plastic nut, a female housing, and a slot. The slot is fixed to one end of the female housing, and the clamping plastic nut is threaded to the other end of the female housing. The female connector is built into the female housing, with its copper tube end contacting the slot and its aluminum tube end facing the clamping plastic nut, for connection with an aluminum cable.

[0014] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide an assembly method for an assembly wrench for a direct-insertion copper-aluminum connector, comprising the following steps:

[0015] (1) Aluminum cable stripping and crimping: Strip the two aluminum cables and use the stripping dimension detection groove of the assembly wrench to check and confirm the required stripping length. Then crimp them with the aluminum tubes of the male and female terminals of the straight-insertion copper-aluminum connector respectively. Use the crimping distance detection groove, crimping width detection groove and crimping height detection groove of the assembly wrench to check and confirm the required crimping length, crimping width and crimping height respectively.

[0016] (2) Assembly: The first wrench of the assembly wrench is used to lock and tighten the compression plastic nuts on the male and female ends respectively;

[0017] (3) Tightening treatment: Insert the male end plug or the female end slot into the positioning groove of the assembly wrench respectively, and then rotate the male end or female end clamping plastic nut by the first wrench of another assembly wrench to tighten the male end or female end.

[0018] (4) Inspection and insertion: After the male end is tightened in step (3), it is inserted into the male end assembly test slot and the female end is inserted into the female end assembly test slot. If it can be fully inserted, and the tightening is qualified, the male end connector is inserted into the female end slot to complete the connection. If it cannot be fully inserted, return to step (2).

[0019] The beneficial effects of the present invention are as follows: The present invention provides an assembly wrench for a direct-insertion copper-aluminum connector. Through the structural design of the first wrench, the second wrench, and the positioning groove that cooperate with the direct-insertion copper-aluminum connector, as well as the design of multiple detection grooves, it can integrate the crimping of aluminum cables, the assembly and fastening of copper-aluminum connectors, and the inspection of each assembly step. It is convenient and quick to use, and it is not easy to damage the direct-insertion copper-aluminum connector, making it highly practical. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the male end of a through-hole copper-aluminum connector;

[0021] Figure 2 yes Figure 1 A schematic diagram of the exploded structure;

[0022] Figure 3 This is a three-dimensional structural diagram of the female end of a through-hole copper-aluminum connector;

[0023] Figure 4 yes Figure 3 A schematic diagram of the exploded structure;

[0024] Figure 5 This is a schematic diagram showing the connection relationship between the male and female connectors and the two aluminum cables after the male and female ends are plugged in.

[0025] Figure 6This is a three-dimensional structural diagram of an assembly wrench for a direct-insertion copper-aluminum connector according to the present invention;

[0026] Figure 7 yes Figure 6 A schematic diagram of the rear structure;

[0027] The components in the attached diagram are labeled as follows: 1. Male end, 11. Male connector, 12. Male housing, 13. Plug, 2. Female end, 21. Female connector, 22. Female housing, 23. Slot, 3. Crimping nut, 4. Aluminum cable, 5. Handle, 6. First wrench, 7. Second wrench, 8. Positioning slot, 9. Baffle, 10. Rib, 51. Male end assembly inspection slot, 52. Female end assembly inspection slot, 53. Stripping dimension inspection slot, 54. Crimping distance inspection slot, 55. Crimping width inspection slot, 56. Crimping height inspection slot, 57. Ruler. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0029] The embodiments of the present invention include:

[0030] Example 1

[0031] A through-hole copper-aluminum connector includes a male end 1 and a female end 2. The male end 1 includes a male connector 11, a clamping plastic nut 3, a male housing 12, and a plug 13. The plug 13 is fixed to one end of the male housing 12, and the clamping plastic nut 3 is threaded to the other end of the male housing 12. The male connector 13 is built into the male housing 12 and includes a copper tube and an aluminum tube connected together. The copper tube end contacts the plug 13, and the aluminum tube end faces the clamping plastic nut 3 for connection to an aluminum cable 4. Figure 1 and 2 As shown.

[0032] The female end 2 includes a female end connector 21, a clamping plastic nut 3, a female end housing 22, and a slot 23. The slot 23 is fixed to one end of the female end housing 22, and the clamping plastic nut 3 is threadedly connected to the other end of the female end housing 22. The female end connector 21 is built into the female end housing 22 and includes a copper tube and an aluminum tube connected together. The copper tube end contacts the slot 23, and the aluminum tube end faces the clamping plastic nut 3 for connection with an aluminum cable. Figure 3 and 4 As shown. For detailed structure, please refer to Chinese Patent CN 212462102 U.

[0033] like Figure 6-7 As shown, an assembly wrench for a through-hole copper-aluminum connector includes a handle 5. One end of the handle 5 is connected to a first wrench head 6, which is an open-type Torx wrench head used to cooperate with the clamping plastic nut 3 of the through-hole copper-aluminum connector to tighten the clamping plastic nut 3 to the male end housing 12 of the male end 1 or to tighten the clamping plastic nut 3 to the female end housing 22 of the female end 2.

[0034] The other end of the handle 5 is connected to a second wrench 7, which is a U-shaped wrench. When the male and female ends of the plugged-in copper-aluminum connector need to be disassembled, it is used to clamp on the male end housing 12 and the female end housing 22, squeezing the plug 13 of the male end 1 so that the outward shape of the plug 13 closes.

[0035] Disassembly is achieved by pulling the male end 13 out of the female end slot 23.

[0036] The second wrench head 6 also has a positioning groove 8, which is a cylindrical structure that passes through the second wrench head 7. One end of the positioning groove 8 has a baffle 9 on its bottom surface. The baffle 9 is designed to cooperate with the connector 13 (the connector 13 can be inserted into the baffle 9). The other end of the positioning groove 8 has a rib 10 on its inner wall, which can cooperate with the slot 23 (the slot 23 has a gap, and the rib 9 is engaged in the gap). The design of the positioning groove 8 allows it to cooperate with and be fixed to the connector 13 of the male end 1 or the slot 23 of the female end 2. Combined with another assembly wrench, the clamping plastic nut 3 of the male end 1 or the female end 2 is clamped, thereby achieving a locking assembly (i.e., fastening) of the male end 1 or the female end 2, improving both the fastening effect and the ease of fastening.

[0037] The other side of the handle 5 is provided with a male end assembly detection groove 51 and a female end assembly detection groove 52. Both the male end assembly detection groove 51 and the female end assembly detection groove 52 are located near one end of the second wrench head 6, and their depth is less than the radius of the clamping plastic nut 3 (so that the crimped aluminum cable is located outside the groove to prevent affecting the detection effect). Their lengths are respectively the length required for the male end 1 or female end 2 to achieve the tightening standard. The tightened or locked male end 1 or female end 2 is respectively inserted into the male end assembly detection groove 51 or female end assembly detection groove 52. If it can be fully inserted, the tightening or locking assembly requirements are met.

[0038] One side of the handle 5 has a stripping length detection groove 53 and a crimping distance detection groove 54, and the other side has a scale 57. Both the stripping length detection groove 53 and the crimping distance detection groove 54 are perpendicular to the axis of the handle 5. The stripping length detection groove 53 is used to detect the stripping length of the aluminum cable, and the crimping distance detection groove 54 is used to detect the crimping length after the aluminum cable is crimped with the aluminum conductor.

[0039] The handle 5 has crimping width detection grooves 55 and crimping height detection grooves 56 on both sides near the end of the first wrench head 6. The crimping width detection groove 55 is used to detect the width of the aluminum cable after crimping, and the crimping height detection groove 56 is used to detect the height of the aluminum cable after crimping.

[0040] The aforementioned assembly wrench is made of plastic, making it lighter and more portable than conventional steel wrenches. It is suitable for workers to carry and use for extended periods and is less likely to damage the direct-insertion copper-aluminum connectors. This assembly wrench integrates aluminum cable crimping, copper-aluminum connector assembly and tightening, and inspection of each assembly step, offering advantages such as versatility, ease of use, and high practicality.

[0041] The assembly method for the above-mentioned through-hole copper-aluminum connector using an assembly wrench includes the following steps:

[0042] For public clients:

[0043] Strip the aluminum cable 4 and use the stripping dimension detection groove 53 of the assembly wrench to check and confirm the required stripping length. Then crimp it with the aluminum tube of the male end connector 11 of the straight-insertion copper-aluminum connector. Use the crimping distance detection groove 54, crimping width detection groove 55 and crimping height detection groove 56 of the assembly wrench to check and confirm the required crimping length, crimping width and crimping height respectively.

[0044] Assembly is achieved by engaging and tightening the compression nut 3 on the male end 1 with the first wrench 6 of the assembly wrench;

[0045] Insert the connector 13 of the male end 1 into the positioning groove 7 of the assembly wrench, and then rotate the clamping plastic nut 3 of the male end 1 by the first wrench head 6 of another assembly wrench to tighten the male end 1.

[0046] After tightening, the male end is placed in the male end assembly test slot 51 of the assembly wrench. If it can be fully inserted, the tightening is considered qualified. If it cannot be fully inserted, it is returned to the assembly stage.

[0047] For the mother end:

[0048] Strip the aluminum cable 4 and use the stripping dimension detection groove 53 of the assembly wrench to check and confirm the required stripping length. Then crimp it with the aluminum tube of the female end connector 21 of the straight-insertion copper-aluminum connector. Use the crimping distance detection groove 54, crimping width detection groove 55 and crimping height detection groove 56 of the assembly wrench to check and confirm the required crimping length, crimping width and crimping height respectively.

[0049] Assembly is achieved by engaging and tightening the compression plastic nut 3 on the female end 2 using the first wrench 6 of the assembly wrench;

[0050] Insert the slot 23 of the female end 2 into the positioning slot 7 of the assembly wrench, and then rotate the clamping plastic nut 3 of the female end 2 by the first wrench head 6 of another assembly wrench to tighten the female end.

[0051] After the above-mentioned tightening treatment, the male end is placed into the female end assembly detection groove 52 of the assembly wrench. If it can be fully inserted, the tightening treatment is qualified. If it cannot be fully inserted, return to the assembly step and reprocess.

[0052] The connection is complete by inserting the properly assembled and tightened male connector into the female slot.

[0053] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. An assembly wrench for a direct-insertion copper-aluminum connector, comprising a handle, characterized in that, One end of the handle is connected to a first wrench that mates with a clamping plastic nut of a straight-insertion copper-aluminum connector, and the other end is connected to a second wrench. The second wrench also has a positioning groove, which matches the male plug or the female slot of the straight-insertion copper-aluminum connector; the positioning groove is a cylindrical structure that passes through the second wrench, with a baffle at one end that matches the structure of the plug, and ribs on the inner wall of the other end that match the structure of the slot. The handle has a male end assembly detection groove on one side and a female end assembly detection groove on the other side; the depth of the male end assembly detection groove and the female end assembly detection groove is less than the radius of the clamping plastic nut. One side of the handle has a stripping size detection groove and a crimping distance detection groove; both the stripping size detection groove and the crimping distance detection groove are perpendicular to the axis of the handle. The handle is further provided with a crimping width detection groove and a crimping height detection groove on at least one side.

2. The assembly wrench for a direct-insertion copper-aluminum connector according to claim 1, characterized in that, The first wrench head is an open-type Phillips head, and the second wrench head is a U-shaped wrench head.

3. An assembly wrench for a direct-insertion copper-aluminum connector according to claim 1 or 2, characterized in that, The through-hole copper-aluminum connector includes a male end and a female end. The male end includes a male connector, a clamping nut, a male housing, and a plug. The plug is fixed to one end of the male housing, and the clamping nut is threaded to the other end of the male housing. The male connector is built into the male housing, with its copper tube end contacting the plug and its aluminum tube end facing the clamping nut, for connection to an aluminum cable. The female end includes a female connector, a clamping nut, a female housing, and a slot. The slot is fixed to one end of the female housing, and the clamping nut is threaded to the other end of the female housing. The female connector is built into the female housing, with its copper tube end contacting the slot and its aluminum tube end facing the clamping nut, for connection to an aluminum cable.

4. An assembly method for an assembly wrench used in a direct-insertion copper-aluminum connector, characterized in that, Includes the following steps: (1) Aluminum cable stripping and crimping: Strip the two aluminum cables and use the stripping dimension detection groove of the assembly wrench to check and confirm the required stripping length. Then crimp them with the aluminum tubes of the male and female terminals of the straight-insertion copper-aluminum connector respectively. Use the crimping distance detection groove, crimping width detection groove and crimping height detection groove of the assembly wrench to check and confirm the required crimping length, crimping width and crimping height respectively. (2) Assembly: The first wrench of the assembly wrench is used to lock and tighten the compression plastic nuts on the male and female ends respectively; (3) Tightening treatment: Insert the male end plug or the female end slot into the positioning groove of the assembly wrench respectively, and then rotate the male end or female end clamping plastic nut by the first wrench of another assembly wrench to tighten the male end or female end. (4) Inspection and insertion: After the male end is tightened in step (3), it is placed in the male end assembly test slot and the female end is placed in the female end assembly test slot. If it can be fully inserted, and the tightening is qualified, the male end connector is inserted into the female end slot to complete the connection. If it cannot be fully inserted, return to step (2).

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