Auxiliary wiring assembly for direct current contactor

Abstract

An auxiliary wiring assembly used for a direct current contactor comprises a fixing seat and a plurality of binding posts, the bottom of the fixing seat is provided with a fixing frame, the fixing frame is fixedly embedded in the side edge of a contact cavity base of the direct current contactor, the middle of the fixing frame is provided with a hollowed-out hole, the inner side of the fixing seat is provided with a vertically-through wiring groove, and the wiring groove and the hollowed-out hole directly face each other up and down; a plurality of mounting grooves with openings in the upper ends are evenly formed in the outer side face of the fixing base, jacks are formed in the inner walls of the mounting grooves and communicated with the wiring grooves, the binding posts correspond to the mounting grooves one to one, the lower end of each binding post is mounted in the corresponding mounting groove, and horizontal wiring boards are arranged at the lower ends of the binding posts; the horizontal wiring board passes through the jack and is located in the wiring groove, and the surface of the horizontal wiring board is provided with a wiring hole. According to the utility model, the defects in the prior art are overcome, the problem of long part forming period can be effectively avoided, and the problem of shaking of the binding post during external wiring can also be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of DC contactors, and particularly relates to an auxiliary wiring component for a DC contactor. Background Art

[0002] A DC contactor generally consists of a coil and an external magnetic circuit, an arc extinguishing chamber, a static contact, a moving contact, a movable shaft assembly, a permanent magnet, a plastic shell, etc. With the extensive use of energy-saving and efficient DC devices such as electric vehicles, fast charging piles, battery switching, and high-voltage DC voltage switch control, especially the large-scale development and use of electric vehicles, the performance requirements for DC contactor products are continuously increasing.

[0003] When the coil terminal of the contactor is externally wired, there is often a risk of loosening. Therefore, the existing wiring terminals of DC contactor products are co-injected with molding compound. However, since the wiring terminals need to be co-injected with the base, the wiring terminals need to be placed during the molding process, resulting in problems such as high mold cost, long molding cycle of parts, and low molding efficiency of parts. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an auxiliary wiring component for a DC contactor, which overcomes the deficiencies of the prior art, is reasonably designed, can effectively avoid the problem of long part molding cycle, and can also avoid the problem of shaking of the wiring post during external wiring.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0006] An auxiliary wiring component for a DC contactor includes a fixed seat and a plurality of wiring posts. A fixed frame is arranged at the bottom of the fixed seat, and the fixed frame is fixedly embedded in the side of the contact cavity base of the DC contactor. A hollow hole is arranged in the middle of the fixed frame. A wiring groove penetrating up and down is arranged inside the fixed seat, and the wiring groove is vertically aligned with the hollow hole.

[0007] A plurality of installation grooves with open upper ends are evenly arranged on the outer side surface of the fixed seat. A jack is arranged on the inner wall of the installation groove, and the jack is communicated with the wiring groove. The wiring posts correspond to the installation grooves one by one. The lower end of each wiring post is installed in the corresponding installation groove. A horizontal wiring board is arranged at the lower end of the wiring post. The horizontal wiring board passes through the jack and is located in the wiring groove. Wiring holes are arranged on the surface of the horizontal wiring board.

[0008] Preferably, the wiring post and the installation groove are integrally and fixedly connected.

[0009] Preferably, the terminal and the mounting groove are independent structures separated from each other. On both side walls of the mounting groove, limiting block insertion grooves are vertically formed. A limiting block is movably mounted in the mounting groove. On both sides of the limiting block, strip-shaped protrusions are arranged vertically. The two sides of the limiting block are inserted into the limiting block insertion grooves through the strip-shaped protrusions.

[0010] Preferably, a terminal connection part is arranged at the upper end of the terminal, and the terminal connection part is arranged in a trapezoidal structure.

[0011] The utility model provides an auxiliary wiring assembly for a DC contactor, which has the following beneficial effects: During installation, the fixing frame can be first fixedly embedded into the through-hole groove on the side of the contact cavity base by bonding, so that the whole auxiliary wiring assembly does not need to be co-injected with the contact cavity base in the form of an insert, thus effectively avoiding the problem of long part molding cycle. Then, a plurality of terminals are respectively installed into the corresponding mounting grooves, and the horizontal wiring board is passed through the jack and fixed in the wiring groove, and the mounting grooves are used to limit and fix each terminal, so as to effectively limit the problem of shaking of the terminal during external wiring. When wiring, the two wiring heads of the coil in the DC contactor penetrate into the wiring groove through the hollow holes, and thus can be wound around the wiring holes on the surfaces of the two horizontal wiring boards, so as to effectively and quickly fix the wiring. The whole auxiliary wiring assembly has a simple structure, a short part molding cycle, and is also convenient for the wiring work of the DC contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0013] Figure 1 Structure schematic diagram of the present utility model;

[0014] Figure 2 Expanded structure schematic diagram of the present utility model;

[0015] Figure 3 Structure schematic diagram of the present utility model after installation;

[0016] Figure 4 Structure schematic diagram of the fixed seat in the present utility model;

[0017] Figure 5 Expanded structure schematic diagram of Embodiment 3 in the present utility model;

[0018] Explanation of the reference numerals in the drawings:

[0019] 1. Fixed base; 2. Terminal; 3. Fixed frame; 4. Contact cavity base; 5. Hollow hole; 6. Wiring groove; 7. Installation groove; 8. Jack; 9. Horizontal wiring board; 10. Wiring hole; 11. Limit block insertion slot; 12. Limit block; 13. Strip-shaped protrusion; 21. Terminal connection part. Detailed implementation mode

[0020] To make the purpose, technical solution and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model.

[0021] Embodiment 1, as Figures 1-5 shown, an auxiliary wiring component for a DC contactor includes a fixed base 1 and a plurality of terminals 2. A fixed frame 3 is provided at the bottom of the fixed base 1, and the fixed frame 3 is fixedly embedded in the side of the contact cavity base 4 of the DC contactor. A hollow hole 5 is provided in the middle of the fixed frame 3, and a vertically penetrating wiring groove 6 is provided inside the fixed base 1. The wiring groove 6 is vertically aligned with the hollow hole 5;

[0022] A plurality of installation grooves 7 with upper openings are evenly formed on the outer side surface of the fixed base 1. Jacks 8 are formed on the inner wall of the installation grooves 7. The jacks 8 are communicated with the wiring groove 6. The terminals 2 correspond to the installation grooves 7 one by one. The lower end of each terminal 2 is installed in the corresponding installation groove 7. A horizontal wiring board 9 is provided at the lower end of the terminal 2. The horizontal wiring board 9 passes through the jack 8 and is located in the wiring groove 6. Wiring holes 10 are formed on the surface of the horizontal wiring board 9.

[0023] Working principle:

[0024] During installation, the fixed frame 3 can be fixedly embedded in the through hole groove on the side of the contact cavity base 4 by bonding, so that the entire auxiliary wiring component does not need to be co-injected with the contact cavity base 4 in the form of an insert, thus effectively avoiding the problem of long part molding cycle. Then, the plurality of terminals 2 are respectively installed in the corresponding installation grooves 7, and the horizontal wiring board 9 is passed through the jack 8 and fixed in the wiring groove 6, and the limit fixation of each terminal 2 is realized through the installation groove 7 to effectively limit the problem of the terminal 2 shaking during external wiring.

[0025] During wiring, the two wiring heads of the coil in the DC contactor penetrate into the wiring groove 6 from the hollow hole 5, and thus can be wound around the wiring holes 10 on the surfaces of the two horizontal wiring boards 9 to effectively perform quick wiring fixation; the auxiliary contacts of the DC contactor can also be connected to the wiring holes 10 on the surfaces of the other two horizontal wiring boards 9 in the wiring groove 6 through wires for quick wiring fixation. Then, external wiring is carried out through each terminal 2 respectively. The entire auxiliary wiring component has a simple structure, a short part molding cycle, and is also convenient for the wiring work of the DC contactor.

[0026] Embodiment 2, as a further preferred solution of Embodiment 1, the terminal 2 and the mounting groove 7 are integrally and fixedly connected. In this embodiment, the terminal 2 and the mounting groove 7 can be integrally injection-molded in the form of inserts, so as to effectively ensure the stability of the connection between the terminal 2 and the mounting groove 7, and then effectively avoid the problem of the terminal 2 shaking during external wiring.

[0027] Embodiment 3, as Figure 5 shown, as a further preferred solution of Embodiment 1, the terminal 2 and the mounting groove 7 are independent structures separated from each other. Limiting block insertion grooves 11 are vertically formed on both side walls of the mounting groove 7. A limiting block 12 is movably installed in the mounting groove 7. Strip-shaped protrusions 13 are arranged on both sides of the limiting block 12 in the vertical direction. The two sides of the limiting block 12 are inserted into the limiting block insertion grooves 11 through the strip-shaped protrusions 13.

[0028] By making the terminal 2 and the mounting groove 7 be independent structures separated from each other respectively, it is more convenient for the production and molding of parts, and then the production cost is effectively reduced. In this embodiment, when installing, the lower end of the terminal 2 can be first aligned with the position of the mounting groove 7, and then the horizontal wiring board 9 is passed through the jack 8 so that the inner side surface of the terminal 2 fits against the inner wall of the mounting groove 7. Then the limiting block 12 is inserted into the mounting groove 7, and through the mutual insertion and fixing action between the strip-shaped protrusion 13 and the limiting block insertion groove 11, the limiting and fixing of the limiting block 12 is realized, so that the terminal 2 can be pressed and fixed by the limiting block 12, thus effectively ensuring the stability of the connection between the terminal 2 and the mounting groove 7. Then the problem of the terminal 2 shaking during external wiring is effectively avoided.

[0029] Embodiment 4, as a further preferred solution of Embodiment 1, a terminal connection part 21 is arranged at the upper end of the terminal 2, and the terminal connection part 21 is arranged in a trapezoidal structure. The terminal connection part 21 is used to connect with an external wiring terminal, so that current passes through the terminal 2, and by arranging the terminal connection part 21 in a trapezoidal structure, it has a guiding effect when being clamped with the external wiring terminal, so that the terminal 2 can accurately and quickly align with the wiring terminal hole and be inserted.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An auxiliary wiring component for a DC contactor, characterized in that: It includes a fixed base (1) and a plurality of terminal posts (2). A fixed frame (3) is provided at the bottom of the fixed base (1), and the fixed frame (3) is fixedly embedded in the side of the contact cavity base (4) of the DC contactor. A hollow hole (5) is provided in the middle of the fixed frame (3). A vertically penetrating wiring groove (6) is provided inside the fixed base (1), and the wiring groove (6) is vertically aligned with the hollow hole (5). A plurality of upper-end open mounting grooves (7) are evenly formed on the outer side surface of the fixed base (1). A jack (8) is formed on the inner wall of the mounting groove (7), and the jack (8) communicates with the wiring groove (6). The terminal posts (2) correspond to the mounting grooves (7) one by one. The lower end of each terminal post (2) is installed in the corresponding mounting groove (7). A horizontal wiring board (9) is provided at the lower end of the terminal post (2). The horizontal wiring board (9) passes through the jack (8) and is located in the wiring groove (6). Wiring holes (10) are formed on the surface of the horizontal wiring board (9).

2. The auxiliary wiring assembly for a DC contactor according to claim 1, wherein: The terminal post (2) and the mounting groove (7) are integrally and fixedly connected.

3. The auxiliary wiring component for a DC contactor according to claim 1, characterized in that: The terminal post (2) and the mounting groove (7) are independent structures separated from each other. Limiting block insertion grooves (11) are formed in the two side walls of the mounting groove (7) in the vertical direction. A limiting block (12) is movably installed in the mounting groove (7). Bar-shaped protrusions (13) are provided on both sides of the limiting block (12) in the vertical direction, and the two sides of the limiting block (12) are inserted into the limiting block insertion grooves (11) through the bar-shaped protrusions (13).

4. The auxiliary wiring assembly for a DC contactor according to claim 1, characterized in that: A terminal connection part (21) is provided at the upper end of the terminal post (2), and the terminal connection part (21) is arranged in a trapezoidal structure.

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