Auxiliary contact module and contactor

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an auxiliary contact module and a contactor. The module is used for being connected with a contactor and specifically comprises a shell, a contact support, a microswitch and a wiring assembly, the contact support is connected into the shell in a sliding mode, and a first triggering part is arranged on one side of the contact support; the microswitch is arranged in the shell corresponding to the first trigger part; the wiring assembly is electrically connected through the microswitch; the contactor is used for driving the contact support to slide, so that the first trigger part cooperates with the microswitch to change the electrical connection state of the wiring assembly. According to the utility model, the reliable connection of the auxiliary contact module in a low-voltage and low-current load in actual work can be realized.

Description

Technical Field

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

[0002] A contactor is a low-voltage electrical device that can connect, carry, and disconnect current under normal circuit conditions (including overload operation), and is widely used in industrial equipment automation control. Auxiliary contact modules are a common accessory on contactors, usually hung on the top or side of the contactor, and operate with the contactor. They are often used to control other electrical equipment or detect the working status of other circuits.

[0003] As the use environment of contactors becomes more complex and harsh, higher requirements are placed on the reliable operation of auxiliary contact modules. For example, the auxiliary contact modules are required to be able to work reliably under conditions of low voltage, low current, high dust, and humidity.

[0004] Currently, most auxiliary contact modules on the market use conventional direct-acting double-contact contacts. In actual work, this type of contact module has been shown to be unable to reliably conduct low-voltage, low-current loads. Utility Model Content

[0005] The utility model aims to provide an auxiliary contact module and a contactor, which are used to realize reliable connection of the auxiliary contact module in a low voltage and low current load in actual operation.

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

[0007] Auxiliary contact module, used to connect with the contactor, including:

[0008] case;

[0009] A contact support is slidably connected in the housing, and a first trigger portion is provided on one side of the contact support;

[0010] A micro switch, corresponding to the first trigger part, is arranged in the housing;

[0011] A wiring assembly, which realizes electrical connection through the micro switch;

[0012] The contactor is used to drive the contact support to slide, so that the first trigger part cooperates with the micro switch to change the electrical connection state of the wiring assembly.

[0013] As an optional solution of the auxiliary contact module, the first trigger portion is a boss protruding from the contact supporting side wall.

[0014] As an optional solution for the auxiliary contact module, a notch is provided on the side wall of the contact support and extends obliquely along the top of the boss toward the inside of the contact support.

[0015] As an optional solution for an auxiliary contact module, the wiring assembly includes a soft wire and a wiring board, one end of the soft wire is electrically connected to the micro switch, and the other end is connected to the wiring board, and the wiring board is used to electrically connect to an external circuit.

[0016] As an optional solution for an auxiliary contact module, the terminal board includes a first board and a second board, the first board is provided with a through hole, one end of the soft wire passes through the through hole and is welded to the first board; the second board is provided with a screw hole, which cooperates with a screw to electrically connect the second board to the external circuit.

[0017] As an optional solution of the auxiliary contact module, the first triggering portion is respectively provided on two opposite side walls of the contact support.

[0018] As an optional solution for the auxiliary contact module, a mounting groove is provided at one end of the contact support, a spring is provided in the mounting groove, one end of the spring abuts against the bottom of the mounting groove, and the other end abuts against the bottom wall of the housing.

[0019] The contactor comprises a shell and also comprises the auxiliary contact module described in any of the above schemes, wherein a plurality of the auxiliary contact modules are connected in parallel in sequence, and a clip and a slot are respectively provided on two opposite side walls of the shell, and the adjacent auxiliary contact modules are clipped with each other through the clip and the slot, and the auxiliary contact module located on the outside is clipped with the groove of the shell through the clip.

[0020] As an optional solution for a contactor, a matching cavity is provided on the housing, a cantilever is protruding from the contact support, the cantilever extends into the interior of the contactor through the matching cavity, and the cantilever is used for transmission connection with the actuating mechanism of the contactor.

[0021] As an optional solution for the contactor, a receiving groove is provided on a side wall of the contact support opposite to the cantilever, and the cantilever of the auxiliary contact module located on the side opposite to the receiving groove can be placed in the receiving groove.

[0022] Beneficial effects:

[0023] In the first aspect of the utility model, the first trigger part of the contact support cooperates with the micro switch to realize the on-off state of the contactor in the form of an electrical signal to be reflected on the auxiliary circuit, and then the electrical signal is received by the external device of the auxiliary circuit to further realize the subsequent circuit control. Specifically, when the contactor moves from closing to opening, it will drive the movement of the contact support, and then trigger the micro switch through the first trigger part, thereby changing the on-off state of the micro switch, and finally realizing the change of the on-off state of the auxiliary circuit, and then controlling the subsequent circuit with the logical on-off relationship of the auxiliary circuit. The utility model adopts the mature component of the micro switch as the execution structure of the auxiliary circuit on-off, and its excellent sealing property helps to improve the protection level of the module; its high conduction performance realizes the safe and reliable operation of the module, and can ensure reliable connection in the low voltage and low current load circuit in actual operation; at the same time, the micro switch itself as a low load can also reduce the influence of temperature rise on the contactor body.

[0024] In the second aspect of the utility model, by providing more than one group of auxiliary contact modules, the number of auxiliary circuits can be further increased, thereby providing customers with more wiring options and having stronger market adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an exploded view of the auxiliary contact module provided by an embodiment of the utility model;

[0026] Figure 2 It is a schematic diagram of the installation of the auxiliary contact module and the contactor provided in the embodiment of the utility model;

[0027] Figure 3 It is a structural schematic diagram of a contactor provided with two auxiliary contact modules provided in an embodiment of the utility model;

[0028] Figure 4 It is a schematic diagram of the structure of the contact support provided by the embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the internal structure of the micro switch of the auxiliary contact module provided by the embodiment of the utility model in the untriggered state;

[0030] Figure 6 It is a schematic diagram of the internal structure of the micro switch triggering state of the auxiliary contact module provided by the embodiment of the utility model;

[0031] Figure 7 It is a structural schematic diagram of the connection between the wiring assembly and the micro switch provided in the embodiment of the utility model.

[0032] In the figure:

[0033] 100, housing; 110, groove; 120, matching cavity;

[0034] 1. Shell; 101. Upper shell; 102. Lower shell; 11. Buckle; 12. Slot; 13. Limit block; 14. Limit slot; 15. Guide slot;

[0035] 2. Contact support; 21. First trigger part; 23. Notch; 24. Cantilever; 25. Accommodation slot; 26. Weight reduction hole;

[0036] 3. Micro switch; 31. Pressure rod; 32. Circuit board;

[0037] 4. Wiring assembly; 41. Flexible wire; 42. Wiring board; 421. First board; 422. Second board; 43. Screw;

[0038] 5. Spring. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Please refer to the attached Figure 1 -Attached Figure 3 The first aspect of the present embodiment relates to an auxiliary contact module (hereinafter referred to as "module"), which is used to connect with a contactor, and specifically includes a housing 1, a contact support 2, a micro switch 3 and a wiring assembly 4. The contact support 2 is slidably connected to the housing 1, and a first trigger portion 21 is provided on one side of the contact support 2; the micro switch 3 is provided in the housing 1 corresponding to the first trigger portion 21; the wiring assembly 4 is electrically connected through the micro switch 3; the contactor is used to drive the contact support 2 to slide, so that the first trigger portion 21 cooperates with the micro switch 3 to change the electrical connection state of the wiring assembly 4.

[0044] In this embodiment, the shell 1 includes an upper shell 101 and a lower shell 102 that can be interlocked. The upper shell 101 and the lower shell 102 are arranged to form a cavity for placing other parts in the module. The contact support 2 is an overall rectangular structure. The contact support 2 can slide inside the shell 1. A guide groove 15 for sliding limit of the contact support 2 is provided on the inner wall of the shell 1. Furthermore, the first trigger part 21 of the contact support 2 cooperates with the micro switch 3 to realize the on-off state of the contactor in the form of an electrical signal on the auxiliary circuit, and then the electrical signal is received by an external device of the auxiliary circuit, thereby realizing subsequent circuit control.

[0045] Specifically, the initial normally open or normally closed state of the micro switch 3 is first set. Further, when the contactor is in the process of closing and opening, the contact support 2 is driven to move, and then the micro switch 3 is triggered by the first trigger part 21, so as to change the on-off state of the micro switch 3, and finally realize the change of the on-off state of the auxiliary circuit, and then control the subsequent circuits, such as the indication circuit or the amplification drive circuit, with the logical on-off relationship of the auxiliary circuit. This embodiment uses the mature component of the micro switch 3 as the execution structure of the auxiliary circuit on-off, and its excellent sealing property helps to improve the protection level of the module; its high conduction performance realizes the safe and reliable operation of the module, and can ensure reliable connection in the low voltage and low current load circuit in actual operation; at the same time, the micro switch 3 itself as a low load can also reduce the influence of temperature rise on the contactor body.

[0046] Optionally, the first trigger portion 21 is a boss protruding from a side wall of the contact support 2 .

[0047] In this embodiment, the contact support 2 is an integral injection molded part, and the first trigger portion 21 is integrally formed on the side wall of the contact support 2. The surface of the boss needs to be free of burrs to ensure smooth and stable relative contact and sliding between the contact support 2 and the micro switch 3.

[0048] Please refer to the attached Figure 4 Optionally, a plurality of weight-reducing holes 26 are provided on the main body of the contact support 2, so as to reduce the material of the contact support 2 while satisfying the required rigidity and strength of the contact support 2, thereby reducing the weight of the entire module.

[0049] Please refer to the attached Figure 5 and attached Figure 6 Furthermore, a notch 23 is provided on the side wall of the contact support 2 and extends obliquely along the top of the boss toward the inside of the contact support 2 .

[0050] In this embodiment, a notch 23 is formed along the edge of the top surface of the boss and extends into the interior of the contact support 2. The notch 23 extends into the interior of the contact support 2 with an inclined surface. The inclined surface can be a curved surface or a concave arc surface. When the pressure rod 31 of the micro switch 3 is in a free state, the notch 23 can effectively achieve the avoidance of the pressure rod 31. This embodiment does not limit the specific structure of the notch 23.

[0051] Please refer to the attached Figure 1 and attached Figure 7 Optionally, the wiring assembly 4 includes a soft wire 41 and a wiring board 42, one end of the soft wire 41 is electrically connected to the micro switch 3, and the other end is connected to the wiring board 42, and the wiring board 42 is used to be electrically connected to an external circuit.

[0052] In this embodiment, the circuit board 32 of the micro switch 3 is connected to two wiring boards 42 through soft wires 41 on both sides, and the two wiring boards 42 can be electrically connected to the external circuit, so as to realize the construction of the overall auxiliary circuit. The use of soft wires 41 can realize the soft connection between the micro switch 3 and the wiring board 42, avoiding the existing hard connection structure. When the user installs and uses it, it is tightened by screw connection. The tightening force will be transmitted to the welding point, thereby causing the welding part to be desoldered or unreliable connection. At the same time, the wiring boards 42 on both sides have the same structure, which can effectively improve the versatility of parts, reduce the investment in part modules, improve production efficiency and reduce product costs, thereby improving product competitiveness.

[0053] Optionally, the terminal block 42 includes a first plate 421 and a second plate 422. The first plate 421 is provided with a through hole, and one end of the soft wire 41 passes through the through hole and is welded to the first plate 421. The second plate 422 is provided with a screw hole, which cooperates with the screw 43 to electrically connect the second plate 422 to the external circuit.

[0054] In this embodiment, the terminal block 42 is in an "L" shape, specifically including a first plate 421 and a second plate 422. The through hole is used to position the soft wire 41, which is also beneficial to improving the welding stability of the soft wire 41. At the same time, a screw hole is processed on the second plate 422 for cooperating with the screw 43 to realize the electrical connection between the terminal block 42 and the external circuit. The two connection positions are respectively located on the first plate 421 and the second plate 422, so that the connection method between them will not affect the electrical connection stability of the auxiliary circuit.

[0055] Furthermore, the first plate 421 and the second plate 422 are an integrated structure, and the connection between the first plate 421 and the second plate 422 is transitioned through an arc surface.

[0056] In this embodiment, the first plate 421 and the second plate 422 are formed by integral stamping, and an arc-shaped surface transition is used at the connection position of the first plate 421 and the second plate 422 to reduce stress concentration and increase the service life of the parts.

[0057] Optionally, a mounting groove is provided at one end of the contact support 2 , a spring 5 is provided in the mounting groove, one end of the spring 5 abuts against the bottom of the mounting groove, and the other end abuts against the inner wall of the housing 1 , and the spring 5 is used to reset the contact support 2 .

[0058] Optionally, two opposite side walls of the contact support 2 are respectively provided with first triggering portions 21 .

[0059] In this embodiment, the module has two first trigger parts 21 protruding on two opposite side walls of the contact support 2. Adaptively, two groups of micro switches 3 are used to cooperate with the first trigger parts 21 to achieve two groups of identical auxiliary circuits under a single module, effectively expanding the scope of use of the module, improving the adaptability of the module, and meeting the user's needs for the use of multiple auxiliary signals in the line.

[0060] Optionally, a mounting groove is provided at one end of the contact support 2 , a spring 5 is provided in the mounting groove, one end of the spring 5 abuts against the bottom of the mounting groove, and the other end abuts against the bottom wall of the housing 1 .

[0061] In this embodiment, a mounting groove is provided at one end of the contact support 2, and the mounting groove is used for limiting the spring 5, which is convenient for assembly. Specifically, when the contact support 2 is driven by the internal action mechanism of the contactor to slide downward, the contact support 2 is compressed. When the contact support 2 loses the force of the contactor, the elasticity of the spring 5 is restored, thereby driving the contact support 2 to reset upward.

[0062] Please continue to refer to Appendix 1- Figure 3The second aspect of the present embodiment also relates to a contactor, which includes a housing 100 and the above modules, wherein a plurality of modules are connected in parallel in sequence, and buckles 11 and slots 12 are respectively provided on two opposite side walls of the housing 1, and adjacent modules are mutually engaged through the buckles 11 and the slots 12, and the modules located on the outside are engaged with the grooves 110 of the housing 100 through the buckles 11. The buckles 11 and the slots 12 facilitate rapid assembly of a plurality of modules, and at the same time, the modules located on the innermost side are engaged with the grooves 110 of the housing 100 through the buckles 11, and the assembly and disassembly processes are simple and convenient.

[0063] By setting more than one group of modules, the number of auxiliary circuits can be further increased, thereby providing customers with more wiring options and greater market adaptability.

[0064] In this embodiment, a limit block 13 and a limit groove 14 are respectively provided on the two opposite side walls of the shell 1. Specifically, the limit block 13 and the buckle 11 are located on the same side, and the limit groove 14 and the card slot 12 are located on the same side. During assembly, the corresponding limit block 13 is inserted into the limit groove 14, which can realize the rapid positioning of two adjacent modules.

[0065] Optionally, a matching cavity 120 is provided on the housing 100 , and a cantilever 24 is protrudingly provided on the contact support 2 . The cantilever 24 extends into the interior of the contactor through the matching cavity 120 , and the cantilever 24 is used for transmission connection with the action mechanism of the contactor.

[0066] In this embodiment, a cantilever 24 is protruded from the contact support 2 perpendicular to the length direction of the contact support 2, and the cantilever 24 is also integrally formed on the main body of the contact support 2. After the module and the contactor are positioned and installed, the cantilever 24 extends into the interior of the contactor through the matching cavity 120. When the actuating mechanism of the contactor is actuated, it can drive the cantilever 24 to move, thereby realizing the sliding of the contact support 2 inside the shell 1.

[0067] Optionally, a receiving groove 25 is provided on a side wall of the contact support 2 opposite to the cantilever 24 , and the cantilever 24 of the auxiliary contact module located on the side opposite to the receiving groove 25 can be placed in the receiving groove 25 .

[0068] In order to realize multi-module connection and realize the linkage of multiple modules after connection so that multiple auxiliary circuits can change the on-off state at the same time, a receiving groove 25 is provided on the side wall relative to the cantilever 24. The movement of the contact support 2 of the previous module will continue to drive the movement of the contact support 2 of the next module, thereby ensuring the continuity of the movement of multiple modules.

[0069] 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. Auxiliary contact module, used to connect with the contactor, characterized in that: include: Housing (1); A contact support (2) is slidably connected in the housing (1), and a first trigger portion (21) is provided on one side of the contact support (2); A micro switch (3) is arranged in the housing (1) corresponding to the first triggering part (21); A wiring assembly (4) for achieving electrical connection via the micro switch (3); The contactor is used to drive the contact support (2) to slide, so that the first trigger part (21) cooperates with the micro switch (3) to change the electrical connection state of the wiring assembly (4).

2. The auxiliary contact module according to claim 1, characterized in that: The first trigger portion (21) is a boss protruding from the side wall of the contact support (2).

3. The auxiliary contact module according to claim 2, characterized in that: A notch (23) is provided on the side wall of the contact support (2) and extends obliquely along the top of the boss toward the inside of the contact support (2).

4. The auxiliary contact module according to claim 1, characterized in that: The wiring assembly (4) comprises a soft wire (41) and a wiring board (42); one end of the soft wire (41) is electrically connected to the micro switch (3), and the other end is connected to the wiring board (42); the wiring board (42) is used to be electrically connected to an external circuit.

5. The auxiliary contact module according to claim 4, characterized in that: The wiring board (42) comprises a first board (421) and a second board (422); the first board (421) is provided with a through hole, one end of the soft wire (41) passes through the through hole and is welded to the first board (421); the second board (422) is provided with a screw hole, and the screw hole cooperates with the screw (43) to electrically connect the second board (422) to the external circuit.

6. The auxiliary contact module according to claim 1, characterized in that: The first triggering parts (21) are respectively provided on two opposite side walls of the contact support (2).

7. The auxiliary contact module according to claim 1, characterized in that: One end of the contact support (2) is provided with a mounting groove, and a spring (5) is provided in the mounting groove. One end of the spring (5) abuts against the bottom of the mounting groove, and the other end abuts against the bottom wall of the housing (1).

8. A contactor, comprising a housing (100), characterized in that: It also includes a plurality of auxiliary contact modules as described in any one of claims 1 to 7, wherein the plurality of auxiliary contact modules are connected in parallel in sequence, and a clip (11) and a slot (12) are respectively provided on two opposite side walls of the shell (1), and adjacent auxiliary contact modules are clipped to each other through the clip (11) and the slot (12), and the auxiliary contact module located on the outside is clipped to the groove (110) of the shell (100) through the clip (11).

9. The contactor according to claim 8, characterized in that: The housing (100) is provided with a matching cavity (120), the contact support (2) is provided with a cantilever (24) protruding therefrom, the cantilever (24) extending into the interior of the contactor through the matching cavity (120), and the cantilever (24) is used for transmission connection with the actuating mechanism of the contactor.

10. The contactor according to claim 9, characterized in that: A receiving groove (25) is provided on a side wall of the contact support (2) opposite to the cantilever (24), and the cantilever (24) of the auxiliary contact module located on the side opposite to the receiving groove (25) can be placed in the receiving groove (25).

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