Direct current contactor fixing structure

Abstract

The invention provides a direct current contactor fixing structure which comprises a direct current contactor body, an output binding post is arranged on the end face of one side of the direct current contactor body and used for being connected with an output end cable bare end, and an input binding post is arranged on the end face of the other side of the direct current contactor body and used for being connected with an input end cable pre-insulation terminal. The bottom of the DC contactor body is recessed inwards to form a gap. The middle of the mounting base protrudes upwards to form a mounting table, the mounting table is correspondingly arranged in the notch, a via hole is formed in the mounting table, fixing wing plates are arranged at the two edge positions of the mounting table, and the fixing wing plates are fixedly connected with an external machine through fasteners; and the fixing piece passes through the through hole to bind and fix the direct current contactor body on the mounting base. The fixing reliability and the installation convenience of the direct current contactor are greatly improved, and the direct current contactor is convenient to disassemble and replace, good in maintenance performance and suitable for batch production.

Description

Technical Field

[0001] This application belongs to the technical field of diesel engine electronic control, and particularly relates to a fixed structure for a DC contactor. Background Art

[0002] Vehicle engine controllers work in a vibrating environment for a long time. Especially for special vehicle controllers, the vibration reliability of large-mass and large-volume components inside has always attracted the attention of technicians. For the fixation of existing large-mass and large-volume DC contactors in the controller, silicone bonding or simple fixation on the board is mostly used, and situations such as adhesive peeling off or the DC contactor becoming loose due to vibration often occur, affecting the normal operation of the entire system.

[0003] Currently, most on the market fix the contactor by locally recessing a space for the contactor in the controller housing and using silicone potting bonding. Although this method has good anti-vibration performance and reliable fixation, it cannot be disassembled without damaging the product, and the maintainability is poor. This method is only applicable to products with extremely mature technology and mass production. Summary of the Invention

[0004] In view of this, this application aims to propose a fixed structure for a DC contactor to achieve reliable fixation of large and heavy DC contactor components.

[0005] To achieve the above object, the technical solution of this application is realized as follows: This application provides a fixed structure for a DC contactor, including: A DC contactor body, on one side end face of the DC contactor body, there is an output terminal for connecting with the bare end of the output cable, and on the other side end face, there is an input terminal for connecting with the pre-insulated terminal of the input cable. The bottom of the DC contactor body is recessed inward to form a notch; An installation base, in the middle of the installation base, there is a raised installation platform. The installation platform is correspondingly arranged in the notch. There is a through hole on the installation platform, and fixed wing plates are provided at two edge positions of the installation platform. The fixed wing plates are fixedly connected to the outside through fasteners; A fixing member, the fixing member passes through the through hole to bundle and fix the DC contactor body on the installation base.

[0006] Further, on one side end face of the DC contactor body, there are two output terminals arranged at intervals. The end of the output terminal is provided with a screw head, and a nut is installed on the screw head; On the other side end face of the DC contactor body, there are two input terminals arranged at intervals. A threaded hole is provided in the center of the input terminal, and a pan head screw is installed in the threaded hole.

[0007] Further, insulating baffles are provided between the two input terminals and between the two output terminals.

[0008] Further, washers are installed between the nut and the output terminal and between the pan head screw and the input terminal.

[0009] Further, both the input terminal and the output terminal are copper cylindrical.

[0010] Further, the mounting base has a C-shaped structure. Two through holes are arranged in parallel on the mounting table. A bundling beam is formed between the two through holes. The two edge positions of the mounting table are folded outwards to form fixing wing plates; The upper end surface of the mounting table is attached to the inner end surface of the notch, and the limiting parts formed at both ends of the mounting table abut against the shoulders of the notch.

[0011] Further, the fixing member is a clamp. The clamp passes through the two through holes to fix the DC contactor body on the bundling beam.

[0012] Further, blocking edges are arranged at both ends of the DC contactor body to prevent the clamp from falling off.

[0013] Compared with the prior art, the DC contactor fixing structure described in this application has the following beneficial effects: The DC contactor fixing structure described in this application can realize the fixed installation of the DC contactor body. This fixing method greatly improves the reliability and installation convenience of the DC contactor fixing. At the same time, the DC contactor is convenient to disassemble and replace, has good maintenance performance, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings: Figure 1 is a schematic diagram of a DC contactor fixing structure according to an embodiment of this application; Figure 2 is an exploded view of a DC contactor fixing structure according to an embodiment of this application; Figure 3 is a schematic diagram of the structure of the mounting base according to an embodiment of this application.

[0015] Description of the reference numerals: 1-DC contactor body; 11-output terminal; 12-input terminal; 13-screw head; 14-nut; 15-insulating baffle; 16-rib; 17-pan head screw; 18-notch; 2-mounting base; 21-mounting table; 22-fixing wing plate; 23-through hole; 24-binding beam; 25-fixing hole; 3-clamp. DETAILED DESCRIPTION

[0016] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0017] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The words "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but can be Including electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0018] See also Figure 1 and Figure 2 As shown, this embodiment provides a DC contactor fixing structure, including: A DC contactor body 1, one end surface of the DC contactor body 1 is provided with an output terminal 11 for connecting with a bare end of an output cable, and the other end surface is provided with an input terminal 12 for connecting with a pre-insulated terminal of an input cable. The bottom of the DC contactor body 1 is recessed inward to form a notch 18; The mounting base 2 is provided with a mounting platform 21 formed by bulging upward in the middle of the mounting base 2. The mounting platform 21 is correspondingly arranged in the notch 18. A through hole 23 is provided on the mounting platform 21. Fixed wing plates 22 are provided at two edge positions of the mounting platform 21. The fixed wing plates 22 are connected and fixed to the external machinery by fasteners; The fixing piece passes through the through hole 23 to bind and fix the DC contactor body 1 on the mounting base 2 .

[0019] Specifically, in this embodiment, to solve the problem of poor disassembly and maintainability caused by fixing the contactor in the above background art by bonding, the present application fixes the DC contactor body 1 on the installation base 2 by opening a notch 18 at the bottom of the DC contactor body 1, providing an installation base 2 corresponding to the opened notch 18, and using a fixing member. This fixing method greatly improves the reliability and convenience of DC contactor fixing. At the same time, the DC contactor is convenient to disassemble and replace, has good maintenance performance, and is suitable for mass production.

[0020] In some embodiments, as Figure 1 and Figure 2 shown, two output terminal posts 11 arranged at intervals are provided on one end face of the DC contactor body 1. A screw head 13 is provided at the end of the output terminal post 11, and a nut 14 is installed on the screw head 13; Two input terminal posts 12 arranged at intervals are provided on the other end face of the DC contactor body 1. A threaded hole is provided at the center of the input terminal post 12, and a flat head screw 17 is installed in the threaded hole. An insulating baffle 15 is provided between the two input terminal posts 12 and between the two output terminal posts 11; Washers are installed between the nut 14 and the output terminal post 11 and between the flat head screw 17 and the input terminal post 12.

[0021] Specifically, in this embodiment, the DC contactor body 1 has a cylindrical structure, and the cylindrical DC contactor body 1 is made of insulating material and internally provided with electromagnetic components such as a wire coil and contact pieces. Two juxtaposed output terminal posts 11 are provided on one end face of the DC contactor. The output terminal post 11 is a copper cylinder, and a screw head 13 is provided at its end. A nut 14 is installed on the screw head 13 for connecting with the bare end of the output cable. Two juxtaposed input terminal posts 12 are provided on the other end face of the DC contactor. The input terminal post 12 is also a copper cylinder, and a threaded hole is provided at its center. A flat head screw 17 is installed on the threaded hole for connecting with the pre-insulated terminal of the input cable.

[0022] Whether it is the output terminal post 11 or the input terminal post 12, an insulating baffle 15 is provided therebetween to prevent electrical connection short circuit between the two terminal posts.

[0023] In some embodiments, as Figure 3 shown, the installation base 2 has a U-shaped structure. Two juxtaposed through holes 23 are opened on the installation table 21. A bundling beam 24 is formed between the two through holes 23. Fixed wing plates 22 are formed by folding the two edges of the installation table 21 outwards; The upper end face of the installation table 21 fits with the inner end face of the notch 18, and the limiting parts formed at both ends of the installation table 21 abut against the shoulders of the notch 18.

[0024] Specifically, in this embodiment, the mounting base 2 is a sheet metal part, in a shape of a capital "J", with a middle bulge as the mounting table 21 and two edges as the fixed wing plates 22. There are two rectangular through holes 23 on the mounting table 21, and a bundling beam 24 is formed between the two juxtaposed through holes 23. The clamp 3 is bundled and fixed to the DC contactor through the bundling beam 24. The upper surface of the mounting table 21 fits against the inner end surface of the notch 18 of the DC contactor, and the limiting parts formed at both ends of the mounting table 21 fit against the shoulders of the notch 18 (i.e., the shoulders formed by the two side walls of the notch 18), preventing the mounting base 2 from moving relative to the DC contactor. There are fixing holes 25 between the two fixed wing plates 22 on both sides, and they are fixedly connected to the external machinery through fasteners such as fastening bolts.

[0025] In some embodiments, as Figure 2 shown, the fixing part is the clamp 3. The clamp 3 passes through the two through holes 23 to fix the DC contactor body 1 on the bundling beam 24. There are flanges 16 provided at both ends of the DC contactor body 1 to prevent the clamp 3 from falling off.

[0026] Specifically, in this embodiment, the clamp 3 is an off-the-shelf component, with the main body made of stainless steel strip. One end is provided with a threaded inclined hole row, and the other end is provided with a rotating fastener head. By rotating the screw on the rotating fastener head, the diameter of the clamp 3 can be contracted or expanded.

[0027] In addition, to cooperate with the clamp 3, cylindrical flanges 16 are provided at both ends of the DC contactor in this application. The diameter of the cylindrical surface is larger than that of the middle cylindrical surface. During assembly, it can prevent the clamp 3 from falling off.

[0028] Finally, it should be noted that: 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 for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

[0029] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the embodiments of the present application shall be included within the protection scope of the present application.

Claims

1. A fixed structure of a DC contactor, characterized in that, include: A DC contactor body (1), wherein one end surface of the DC contactor body (1) is provided with an output terminal (11) for connecting to a bare end of an output cable, and the other end surface is provided with an input terminal (12) for connecting to a pre-insulated terminal of an input cable, and the bottom of the DC contactor body (1) is recessed inward to form a notch (18); A mounting base (2), wherein the middle portion of the mounting base (2) is raised upward to form a mounting platform (21), the mounting platform (21) is arranged correspondingly in the notch (18), a through hole (23) is provided on the mounting platform (21), and fixed wing plates (22) are arranged at two edge positions of the mounting platform (21), and the fixed wing plates (22) are connected and fixed to an external machine via fasteners; A fixing piece, wherein the fixing piece passes through the through hole (23) to bind and fix the DC contactor body (1) on the mounting base (2).

2. A DC contactor fixing structure according to claim 1, characterized in that: One end surface of the DC contactor body (1) is provided with two output terminals (11) arranged at intervals, the end of the output terminal (11) is provided with a screw head (13), and a nut (14) is mounted on the screw head (13); The other side end surface of the DC contactor body (1) is provided with two input terminals (12) arranged at intervals, and a threaded hole is provided at the center of the input terminal (12), and a pan head screw (17) is installed in the threaded hole.

3. A DC contactor fixing structure according to claim 2, characterized in that: An insulating baffle (15) is provided between the two input binding posts (12) and between the two output binding posts (11).

4. A DC contactor fixing structure according to claim 2, characterized in that: Washers are installed between the nut (14) and the output terminal (11), and between the pan head screw (17) and the input terminal (12).

5. A DC contactor fixing structure according to claim 2, characterized in that: The input binding post (12) and the output binding post (11) are both copper cylinders.

6. A DC contactor fixing structure according to claim 1, characterized in that: The mounting base (2) is in a "X"-shaped structure, the mounting platform (21) is provided with two through holes (23) arranged in parallel, a binding beam (24) is formed between the two through holes (23), and two edge positions of the mounting platform (21) are folded outwards to form fixed wing plates (22); The upper end surface of the mounting platform (21) is in contact with the inner end surface of the notch (18), and the limiting portions formed at the two ends of the mounting platform (21) are in contact with the shoulders of the notch (18).

7. A DC contactor fixing structure according to claim 6, characterized in that: The fixing member is a clamp (3), and the clamp (3) passes through two through holes (23) to fix the DC contactor body (1) on the binding beam (24).

8. A DC contactor fixing structure according to claim 7, characterized in that: Both ends of the DC contactor body (1) are provided with edge stops (16) to prevent the clamp (3) from falling off.

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