Contactor

Abstract

The utility model belongs to the technical field of low-voltage electrical appliances, and discloses a contactor. The contactor specifically includes a body, a connection assembly and a protective member. Among them, a plurality of slots and a plurality of contact jacks are provided on the body; the connection assembly includes a shell and a plurality of connectors, and the plurality of connectors are arranged at intervals on one side of the shell, and each connector includes a main body, a pin part, a contact part and an extension part respectively, the main body is connected to the shell, the contact part is arranged at one end of the main body, the contact part is inserted in the contact jack, the extension part is arranged at the other end of the main body, the extension part is inserted in the slot, the pin part is arranged at one end of the extension part away from the main body, and the pin part is used to be electrically connected to the PCB board; the protective member is detachably connected to the body, and the protective member cover is arranged at the notch of the slot and fixes the main body in the slot. Through the utility model, the integration and modularization of the contactor can be improved, and the assembly and manufacturing costs can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a contactor. Background Art

[0002] Contactors are widely used switching devices for frequent connection and disconnection, AC and DC main circuits and large-capacity control circuits. At present, contactors are mainly installed by rail mounting and screw mounting. In the wind power industry, explosion-proof industry, energy storage industry and elevator industry, the existing contactor products need to reserve a large installation and wiring space when installed in the control cabinet, and the circuits are complex and difficult to troubleshoot and repair. In view of this, the existing new industries have begun to use onboard contactors.

[0003] The on-board contactor is an electrical component mounted on a circuit board to control the on and off of a circuit. It usually has a small size and a high degree of integration, and can be easily installed on a circuit board together with other electronic components to achieve circuit control and signal transmission.

[0004] However, the connection between the current on-board contactor and the PCB (Printed Circuit Board) is not highly integrated and modular, which increases the assembly and manufacturing costs. Utility Model Content

[0005] The utility model aims to provide a contactor, which is used to improve the modularization degree of contactor assembly and reduce assembly manufacturing costs.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Contactors, including:

[0008] A body, wherein the body is provided with a plurality of slots and a plurality of contact jacks;

[0009] A connection assembly, comprising a housing and a plurality of connection members, wherein the plurality of connection members are arranged at intervals on one side of the housing, each of the connection members comprises a main body, a pin portion, a contact portion and an extension portion, wherein the main body is connected to the housing, the contact portion is arranged at one end of the main body, the contact portion is inserted into the contact jack, the extension portion is arranged at the other end of the main body, the extension portion is inserted into the slot, the pin portion is arranged at one end of the extension portion away from the main body, and the pin portion is used to be electrically connected to a PCB board;

[0010] The protective member is detachably connected to the main body, and the protective member is covered at the notch of the slot and fixes the main body in the slot.

[0011] As an optional solution for a contactor, a limiting hole is provided on the main body, a limiting groove is provided on the shell, the main body is arranged in the limiting groove, a limiting block is protruded from the bottom wall of the limiting groove, and the limiting block is inserted into the limiting hole.

[0012] As an optional solution for a contactor, the limit block is elastic, and the limit block is connected to the limit hole by interference fit.

[0013] As an optional solution for a contactor, the top of the limit block is provided with a chamfer.

[0014] As an optional solution of the contactor, two opposite side walls of the limiting groove are respectively provided with first limiting bosses, and a part of the structure of the main body is slidably disposed between the first limiting bosses and the bottom wall of the limiting groove.

[0015] As an optional solution of a contactor, a plurality of abutting portions are provided on the protective member, and the abutting portions abut against the extending portions.

[0016] As an optional solution for the contactor, a guide groove is provided on a side wall of the slot along an inserting direction of the abutting portion, and the abutting portion is inserted into the slot along the guide groove.

[0017] As an optional solution for the contactor, a reinforcing rib is protruded on the side wall of the protective member facing the main body, and the reinforcing rib and the abutting portion are an integrated structure.

[0018] As an optional solution of the contactor, two opposite inner side walls of the slot are respectively provided with second limiting bosses, and the main body is arranged between the second limiting bosses and the bottom wall of the slot.

[0019] As an optional solution for the contactor, the top wall of the second limiting boss and the side wall away from the bottom wall of the slot are transitioned through an arc surface.

[0020] Beneficial effects:

[0021] In the present invention, the contact part of the connector is inserted into the contact jack to form a static contact of the onboard contactor; the pin part of the connector is used to electrically connect with the PCB board to form a complete onboard contactor, and the extension part is inserted into the slot to limit the connector relative to the body; the connector is an integrated structure as a whole, which effectively ensures the overall strength and good conductivity. In addition, in order to further protect and limit the connector, the connector can be pressed against the shell through a protective part, so that the protective part covers the notch of the slot, thereby ensuring that the body is reliably fixed in the slot. The contactor of the present invention can achieve modular assembly and reduce assembly manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an exploded diagram of a contactor provided in an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the main body provided by the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the connector and the housing provided in the embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a connecting piece provided by an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the protective element provided in the embodiment of the utility model.

[0027] In the figure:

[0028] 1. housing; 11. limiting groove; 111. limiting block; 112. first limiting boss;

[0029] 2. Connector; 21. Main body; 211. Limiting hole; 22. Insertion pin portion; 23. Contact portion; 24. Extension portion;

[0030] 3. Protective member; 31. Abutment portion; 32. Reinforcement rib;

[0031] 4. Main body; 41. Slot; 411. Guide groove; 412. Second limiting boss; 42. Contact socket. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] Please refer to the attached Figure 1 -Attached Figure 4 The present embodiment relates to a contactor, in particular, a board-mounted contactor, which specifically includes a body 4, a connection assembly and a protective member 3. The body 4 is provided with a plurality of slots 41 and a plurality of contact plug holes 42; the connection assembly includes a housing 1 and a plurality of connectors 2, the plurality of connectors 2 are arranged at intervals on one side of the housing 1, each connector 2 includes a main body 21, a pin portion 22, a contact portion 23 and an extension portion 24, the main body 21 is connected to the housing 1, the contact portion 23 is arranged at one end of the main body 21, the contact portion 23 is inserted into the contact plug hole 42, the extension portion 24 is arranged at the other end of the main body 21, the extension portion 24 is inserted into the slot 41, the pin portion 22 is arranged at one end of the extension portion 24 away from the main body 21, and the pin portion 22 is used to be electrically connected to the PCB board; the protective member 3 is detachably connected to the body 4, the protective member 3 is covered at the notch of the slot 41 and fixes the main body 21 in the slot 41.

[0037] In this embodiment, a plurality of strip-shaped slots 41 are provided on the side walls at both ends of the body 4 along the vertical direction, and a plurality of contact plug holes 42 are provided on the side wall near the top of the body 4 . The shell 1 is a non-metallic plastic part that is injection molded by a plastic compression mold, and the connector 2 is a special-shaped metal conductive part that can be obtained by bending a metal plate. The contact part 23 of the connector 2 is connected to one end of the main body 21, and the extension direction of the contact part 23 is at a certain angle to the extension direction of the main body 21. For example, the two are arranged at an angle, and a contact point is welded on the top of the contact part 23. The contact part 23 is inserted into the contact socket 42 to form a static contact of the on-board contactor; the pin part 22 of the connector 2 is used to be electrically connected to the PCB board to form a complete on-board contactor, and an extension part 24 is formed by extending out of the main body 21 of the shell 1. The extension part 24 is plugged into the slot 41 to realize the limiting of the connector 2 relative to the main body 4; the connector 2 is an integrated structure as a whole, which effectively ensures the overall strength and good conductivity, thereby reducing the contact resistance and improving the temperature rise performance. In addition, in order to further protect and limit the connector 2, the connector 2 can be pressed against the housing 1 by the protective member 3, so that the protective member 3 covers the notch of the slot 41, thereby ensuring that the main body 21 is reliably fixed in the slot 41, thereby improving safety. This embodiment can achieve the modularization of the assembly of the onboard contactor, reduce the assembly manufacturing cost, and simplify the production process.

[0038] Optionally, a limiting hole 211 is provided on the main body 21 , a limiting groove 11 is provided on the shell 1 , the main body 21 is arranged in the limiting groove 11 , a limiting block 111 is protruded from the bottom wall of the limiting groove 11 , and the limiting block 111 is inserted into the limiting hole 211 .

[0039] In this embodiment, a plurality of limiting grooves 11 are provided on the housing 1, and the shape of the limiting grooves 11 is adapted to the structure of the main body 21 of the connector 2, so as to facilitate the main body 21 to be embedded in the limiting grooves 11. A square limiting hole 211 is provided in the middle of the main body 21, and a limiting block 111 is convexly provided on the bottom wall of the limiting groove 11. When the connector 2 is assembled with the limiting groove 11, the connector 2 can be slid into the limiting groove 11 from the top of the housing 1, and the limiting block 111 is embedded in the limiting hole 211 to achieve the limiting in the sliding direction of the connector 2. Of course, in other embodiments, the limiting hole 211 and the limiting block 111 can be of other shapes, which are not specifically limited in this embodiment.

[0040] Furthermore, the limiting block 111 is elastic, and the limiting block 111 is connected to the limiting hole 211 by interference fit.

[0041] In this embodiment, the connecting member 2 can slide along the bottom wall of the limiting groove 11 into the limiting groove 11. During the sliding process, the limiting block 111 can be squeezed to deform inward, and the limiting block 111 can recover its deformation after reaching the limiting hole 211, and be embedded in the limiting hole 211 to complete the installation. In order to further ensure that it does not loosen after installation, the limiting block 111 is connected to the limiting hole 211 by interference fit. Of course, the connecting portion between the limiting block 111 and the bottom wall of the limiting groove 11 can also be provided with a strip-shaped avoidance hole to facilitate the deformation of the limiting block 111. In other embodiments, under the premise of cost permission, the limiting block 111 can also be an elastic member or elastic mechanism independent of the limiting groove 11. For example, the limiting block 111 is a spring pin.

[0042] Optionally, a chamfer is provided on the top of the limiting block 111 .

[0043] In this embodiment, by processing a chamfer on the top of the limiting block 111, it is convenient for the connecting member 2 to gradually squeeze the limiting block 111 during the sliding process in the limiting groove 11, thereby avoiding obstruction of the sliding process.

[0044] Optionally, two opposite side walls of the limiting groove 11 are respectively provided with first limiting bosses 112 , and a part of the structure of the main body 21 is slidably disposed between the first limiting bosses 112 and the bottom wall of the limiting groove 11 .

[0045] In this embodiment, the connecting member 2 is limited by the first limiting boss 112 in a direction perpendicular to the plane where the bottom wall of the limiting groove 11 is located. The first limiting boss 112 and the bottom wall of the limiting groove 11 form a slideway for the connecting member 2 to slide, thereby ensuring that the connecting member 2 can accurately enter the limiting groove 11.

[0046] Optionally, the pin portion 22 is welded to a reserved hole of a PCB board.

[0047] In this embodiment, the structure of the pin portion 22 can cooperate with the reserved hole of the PCB board. By inserting the pin portion 22 into the reserved hole and directly soldering it to the PCB board, wire connection can be avoided, the onboard carrying capacity can be increased, installation and wiring space can be saved, and assembly costs can be reduced. On the other hand, directly using a welding connection method can avoid the screw connection method used in the prior art, reduce contact resistance, improve conductivity, and reduce temperature rise. After testing, the temperature rise of the contactor terminal of the present application is reduced by 38% to 40% compared with the conventional contactor connected by screws.

[0048] Please further combine the attached Figure 3 and attached Figure 5 Optionally, the protective member 3 is provided with a plurality of abutting portions 31, and the abutting portions 31 abut against the extension portion 24. A guide groove 411 is provided on the side wall of the slot 41 along the insertion direction of the abutting portion 31, and the abutting portion 31 is inserted into the slot 41 along the guide groove 411.

[0049] In this embodiment, the abutment portion 31 is arranged in a one-to-one correspondence with the main body 21. The abutment portion 31 is integrally formed on the protective member 3. The abutment portion 31 is a T-shaped plate structure. An extension arm of the abutment portion 31 presses against the extension portion 24 to ensure reliable fixation of the connecting member 2. At the same time, by providing a guide groove 411 on the side wall of the slot 41, the abutment portion 31 can be adaptively inserted into the slot 41 along the guide groove 411, which can facilitate the coordinated installation of the protective member 3 and the side wall of the main body 4.

[0050] Furthermore, a reinforcing rib 32 is protruded from the side wall of the protective member 3 facing the main body 4 , and the reinforcing rib 32 and the abutting portion 31 are an integrated structure.

[0051] In this embodiment, one end of the reinforcing rib 32 is connected to the abutting portion 31 , and the reinforcing rib 32 and the abutting portion 31 are arranged at a right angle to enhance the overall strength of the protective member 3 .

[0052] Optionally, two opposite inner side walls of the slot 41 are respectively provided with second limiting bosses 412 , and the main body 21 is disposed between the second limiting bosses 412 and the bottom wall of the slot 41 .

[0053] The second limiting boss 412 can ensure that the connector 2 is stably retained in the slot 41 to avoid movement and disengagement, thereby improving stability.

[0054] Furthermore, the top wall of the second limiting boss 412 and the side wall away from the bottom wall of the slot 41 are transitioned through an arc surface.

[0055] In this embodiment, the top wall of the second limiting boss 412 is processed into an arc surface, so that the connecting member 2 can smoothly enter the gap between the second limiting boss 412 and the bottom wall of the slot 41 along the arc surface.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A contactor, characterized in that: include: A body (4), wherein the body (4) is provided with a plurality of slots (41) and a plurality of contact jacks (42); A connection assembly comprises a housing (1) and a plurality of connection members (2), wherein the plurality of connection members (2) are arranged at intervals on one side of the housing (1), and each of the connection members (2) comprises a main body (21), a pin portion (22), a contact portion (23) and an extension portion (24), wherein the main body (21) is connected to the housing (1), the contact portion (23) is arranged at one end of the main body (21), the contact portion (23) is inserted into the contact insertion hole (42), the extension portion (24) is arranged at the other end of the main body (21), the extension portion (24) is inserted into the slot (41), the pin portion (22) is arranged at an end of the extension portion (24) away from the main body (21), and the pin portion (22) is used for electrically connecting to a PCB board; The protective member (3) is detachably connected to the main body (4); the protective member (3) is covered at the notch of the slot (41) and fixes the main body (21) in the slot (41).

2. The contactor according to claim 1, characterized in that: The main body (21) is provided with a limiting hole (211), the shell (1) is provided with a limiting groove (11), the main body (21) is arranged in the limiting groove (11), a limiting block (111) is protruding from the bottom wall of the limiting groove (11), and the limiting block (111) is inserted into the limiting hole (211).

3. The contactor according to claim 2, characterized in that: The limiting block (111) is elastic, and the limiting block (111) is connected to the limiting hole (211) by interference fit.

4. The contactor according to claim 2, characterized in that: The top of the limiting block (111) is provided with a chamfer.

5. The contactor according to claim 2, characterized in that: Two opposite side walls of the limiting groove (11) are respectively provided with first limiting bosses (112), and a partial structure of the main body (21) is slidably disposed between the first limiting bosses (112) and the bottom wall of the limiting groove (11).

6. The contactor according to claim 1, characterized in that: The protective member (3) is provided with a plurality of abutment portions (31), and the abutment portions (31) abut against the extension portion (24).

7. The contactor according to claim 6, characterized in that: A guide groove (411) is provided on the side wall of the slot (41) along the insertion direction of the abutment portion (31), and the abutment portion (31) is inserted into the slot (41) along the guide groove (411).

8. The contactor according to claim 6, characterized in that: A reinforcing rib (32) is protrudingly provided on the side wall of the protective member (3) facing the main body (4); the reinforcing rib (32) and the abutting portion (31) are an integrated structure.

9. The contactor according to claim 1, characterized in that: Two opposite inner side walls of the slot (41) are respectively provided with second limiting bosses (412), and the main body (21) is arranged between the second limiting bosses (412) and the bottom wall of the slot (41).

10. The contactor according to claim 9, characterized in that: The top wall of the second limiting boss (412) and the side wall away from the bottom wall of the slot (41) are transitioned through an arc surface.

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