Auxiliary contact module and control appliance

Abstract

The utility model belongs to low -voltage electric appliance technical field discloses a kind of auxiliary contact module and control electric appliance.Auxiliary contact module includes protective shell, protective shell has installation wall;First assembly unit and / or second assembly unit are provided on installation wall, the first assembly unit includes first hook and second hook, the first hook and the second hook are spaced apart and arranged on the installation wall along first direction, at least one of the first hook and the second hook is elastically connected with the installation wall, the first hook and the second hook form the clamping interval of the contactor two side walls between the first hook and the second hook, the second assembly unit includes limit piece, the limit piece is arranged on the installation wall, the limit piece is used to be inserted with the first limit hole of the contactor, and the limit piece is interference fit with the first limit hole.The utility model can reduce the number of parts of auxiliary contact module, reduce the assembly difficulty of auxiliary contact module.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to an auxiliary contact module and a control electrical appliance. Background Technology

[0002] Contactors are divided into AC contactors and DC contactors. They are used in power, power distribution and power consumption. In a broad sense, a contactor is an electrical device in industrial electricity that uses the magnetic field generated by the current flowing through a coil to close the contacts in order to control the load. Auxiliary contact modules are usually installed on the side of the contactor as accessories. The function of the auxiliary contact modules is to be used in the control circuit to meet the requirements of various control methods.

[0003] In related technologies, the auxiliary contact module has an unlock button installed on the top of the housing via an elastic element. The unlock button is integrally formed with two latching parts. By pressing and releasing the unlock button, the latching parts can be connected or separated from the contactor.

[0004] However, using an unlock button to install and remove the auxiliary contact module can easily lead to an increase in the number of parts in the auxiliary contact module, thus increasing the difficulty of assembling the auxiliary contact module. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary contact module and a control electrical appliance, thereby reducing the number of parts in the auxiliary contact module and lowering the assembly difficulty of the auxiliary contact module.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The auxiliary contact module includes:

[0008] Protective casing with mounting walls;

[0009] A first assembly unit and / or a second assembly unit, wherein the first assembly unit includes a first hook and a second hook, the first hook and the second hook being spaced apart along a first direction on the mounting wall, at least one of the first hook and the second hook being elastically connected to the mounting wall, and a clamping interval for clamping the two side walls of the contactor is formed between the first hook and the second hook, and the second assembly unit includes a limiting member, the limiting member being disposed on the mounting wall, the limiting member being used to insert into a first limiting hole of the contactor, and the limiting member being interference-fitted with the first limiting hole.

[0010] As an optional solution for the auxiliary contact module, the second hook is rigidly connected to the mounting wall, the first hook is elastically connected to the mounting wall, and the first hook is inclined toward the second hook.

[0011] As an optional solution for the auxiliary contact module, the first hook includes a first support portion and a first bending portion. One end of the first support portion is connected to the mounting wall, and the other end of the first support portion is connected to the first bending portion. The other end of the first support portion is inclined towards the direction of the second hook. The first bending portion is used to engage with the side wall of the contactor; and / or,

[0012] The second hook includes a second support portion and a second bending portion. One end of the second support portion is connected to the mounting wall, and the other end of the second support portion is connected to the second bending portion. The second bending portion is used to engage with the side wall of the contactor.

[0013] As an optional solution for the auxiliary contact module, at least two limiting members are provided, and the at least two limiting members are spaced apart along a first direction on the mounting wall and extend along a second direction; and / or,

[0014] The end of the limiting member facing away from the mounting wall is recessed with a strain groove. The strain groove can deform under force so that the limiting member is inserted into the first limiting hole of the contactor and is interference-fitted with the first limiting hole.

[0015] As an optional solution for the auxiliary contact module, the protective shell includes a boss, which is disposed on the mounting wall and is inserted into the second limiting hole of the contactor.

[0016] As an optional solution for the auxiliary contact module, the mounting wall is provided with a strip-shaped clearance hole extending in a third direction, and the auxiliary contact module further includes:

[0017] A stationary contact, wherein the stationary contact is disposed within the mounting housing.

[0018] A moving contact assembly includes a moving contact and a contact support with a transmission connector. The moving contact is disposed on the contact support, and the contact support is provided with a transmission connector. The contact support is slidably disposed within the protective shell and is used to drive the moving contact to close or separate from the stationary contact. The transmission connector passes through the strip-shaped clearance hole and extends outward.

[0019] As an optional solution for the auxiliary contact module, the auxiliary contact module further includes:

[0020] A spring seat is disposed within the mounting housing, and the spring seat has a positioning post;

[0021] A reaction spring, one end of which is sleeved on the positioning post, and the other end of which abuts against the moving contact assembly. The reaction spring always has the tendency to keep the normally open moving contact and the normally closed stationary contact open, or to keep the normally closed moving contact and the normally closed stationary contact closed.

[0022] As an optional solution for the auxiliary contact module, both ends of the spring seat are provided with limiting ribs, and the protective shell is provided with a positioning structure corresponding to the limiting ribs. The positioning structure is provided with a positioning groove, and the limiting ribs are inserted into the positioning groove.

[0023] As an optional solution for the auxiliary contact module, the protective shell includes a cover plate and a mounting shell. The cover plate is fastened to the mounting shell, and a mounting cavity is formed between the cover plate and the mounting shell. The side of the mounting shell opposite to the cover plate is the mounting wall. The mounting wall is provided with a plurality of riveting holes. A plurality of riveting posts are protruding from the cover plate. The riveting posts pass through the riveting holes and are riveted.

[0024] A control electrical appliance includes a contactor and an auxiliary contact module as described in any of the preceding claims, wherein the contactor is provided with a first limiting hole, and a first hook and a second hook of the auxiliary contact module are clamped to the two side walls of the contactor along a first direction.

[0025] The beneficial effects of this utility model are:

[0026] The auxiliary contact module provided by this utility model has a first hook and a second hook spaced apart along a first direction on the mounting wall of the protective shell. At least one of the first hook and the second hook is elastically connected to the mounting wall, forming a clamping area for clamping the contactor. Specifically, one hook abuts against the side wall of the contactor for pre-installation positioning, while the other hook, through its own elastic deformation, tightly abuts against the other side wall of the contactor to achieve a fixed assembly effect. This allows the auxiliary contact module to be assembled onto the contactor, limiting the displacement of the auxiliary contact module in the first direction. A limiting member is provided on the mounting wall, which can be inserted into a corresponding first limiting hole on the contactor. The interference fit between the limiting member and the first limiting hole ensures the stable assembly of the auxiliary contact module and the contactor, and also limits the displacement of the auxiliary contact module in the second direction, preventing the auxiliary contact module from being easily removed from the contactor. By setting a first assembly unit and / or a second assembly unit on the auxiliary contact module, not only is the number of parts in the auxiliary contact module reduced and the connection between the auxiliary contact module and the contactor ensured, but the assembly difficulty of the auxiliary contact module is also reduced.

[0027] The control electrical appliance provided by this utility model has a second limiting hole on the contactor of the control electrical appliance. The first hook and the second hook of the auxiliary contact module can be clamped onto the contactor to ensure the connection between the auxiliary contact module and the contactor. This not only simplifies the structure of the auxiliary contact module, but also reduces the number of parts of the auxiliary contact module. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0029] Figure 1 This is a first-view assembly diagram of the auxiliary contact module in an embodiment of this utility model;

[0030] Figure 2 This is a second-view assembly diagram of the auxiliary contact module in an embodiment of this utility model;

[0031] Figure 3 This is a third-view assembly diagram of the auxiliary contact module in an embodiment of this utility model;

[0032] Figure 4 This is a fourth-view assembly diagram of the auxiliary contact module in an embodiment of this utility model;

[0033] Figure 5 This is a partial cross-sectional view of the auxiliary contact module in an embodiment of this utility model;

[0034] Figure 6 This is a schematic diagram of the spring seat in an embodiment of the present utility model;

[0035] Figure 7 This is a schematic diagram of the assembly of the control electrical appliances in an embodiment of this utility model.

[0036] Figure label:

[0037] 100. Auxiliary contact module; 200. Contactor; 201. Second limiting hole; 202. First limiting hole; 203. Third limiting hole;

[0038] 1. Cover plate; 2. Mounting housing; 3. Stationary contact; 4. Moving contact; 5. Contact support; 51. Transmission connecting component; 6. Spring seat; 7. Reaction spring;

[0039] 11. Riveted column;

[0040] 21. Mounting wall; 211. Strip-shaped clearance hole; 212. Riveting hole; 22. First hook; 221. First support part; 222. First bending part; 23. Second hook; 231. Second support part; 232. Second bending part; 24. Limiting component; 241. Strain groove; 25. Boss; 26. Positioning structure; 261. Positioning groove;

[0041] 61. Positioning column; 62. Limiting reinforcement. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0046] Contactors, as indispensable key components in the field of electrical control, are mainly divided into two categories: AC contactors and DC contactors. They play a vital role in power transmission, distribution systems, and various electrical equipment. Contactors can precisely control the on / off state of circuits according to preset logic or external signals, thereby ensuring the stable operation of the power system and the safe operation of electrical equipment.

[0047] In the structural design of contactors, auxiliary contact modules are typically installed on their sides as important accessories. The original purpose of the auxiliary contact module is to expand the contactor's functionality, enabling it to be more flexibly applied to various complex control circuits and meet diverse control requirements. The auxiliary contact module greatly enhances the applicability and flexibility of the contactor.

[0048] In related technical fields, existing auxiliary contact module designs often employ a specific assembly / disassembly mechanism. Specifically, the auxiliary contact module has an unlocking button mounted on the top of its housing via a spring-loaded element. This unlocking button has two integrated latching parts that match corresponding structures on the contactor body, forming a secure connection. When it is necessary to install or remove the auxiliary contact module, simply press and release the unlocking button, and the latching parts will connect or disconnect from the contactor.

[0049] However, while this method of using an unlock button for assembly and disassembly improves the convenience of operation to some extent, it also brings some problems that cannot be ignored. First, due to the addition of the unlock button and its related structure, the number of parts in the auxiliary contact module increases significantly. This not only increases manufacturing costs but also increases the difficulty and complexity of assembly, and the structure is also more complex.

[0050] To reduce the number of components in the auxiliary contact module and simplify its structure, this embodiment provides an auxiliary contact module and a control electrical appliance, which are described below in conjunction with... Figures 1 to 7 The specific content of this embodiment will be described in detail. It should be noted that the first direction mentioned in this embodiment is... Figure 2 The X direction in this embodiment, and the second direction mentioned in this embodiment are... Figure 2 In this embodiment, the third direction is the Y direction, which is the Z direction.

[0051] like Figures 1 to 4As shown, this utility model provides an auxiliary contact module 100. Specifically, the auxiliary contact module 100 includes a protective shell, which is further subdivided into two main parts: a cover plate 1 and a mounting shell 2. The cover plate 1 is securely mounted on the mounting shell 2 in a snap-fit ​​manner, and the two tightly enclose each other to form a closed mounting chamber, providing a safe and reliable space for the internal components. It is particularly worth mentioning that the side of the mounting shell 2 opposite to the cover plate is a mounting wall 21, on which a first assembly unit and / or a second assembly unit are provided.

[0052] The first assembly unit includes a first hook 22 and a second hook 23, which are spaced apart along the first direction on the mounting wall 21 of the mounting housing 2, forming a clamping area for clamping the two side walls of the contactor 200. At least one of the first hook 22 and the second hook 23 is elastically connected to the mounting wall 21. When the auxiliary contact module 100 needs to be assembled onto the contactor 200, (when only one hook is elastically connected to the mounting wall) one of the hooks can be first abutted against the side wall of the contactor for pre-installation positioning, while the other hook uses its own elastic deformation to tightly abut against the other side wall of the contactor to achieve a fixed assembly effect; (when both hooks are elastically connected to the mounting wall) the two side walls of the contactor 200 are placed between the first hook 22 and the second hook 23, and the elastic deformation of the two hooks generates a clamping force on the two side walls of the contactor 200, easily achieving a stable positioning of the auxiliary contact module 100 in the first direction, effectively preventing the auxiliary contact module 100 from sliding or shifting in the first direction.

[0053] The second assembly unit includes a limiting member 24. The limiting member 24 is disposed on the mounting wall 21 of the mounting housing 2, extending along the second direction. Its design purpose is to engage with the first limiting hole 202 on the contactor 200. It should be noted that the limiting member 24 and the first limiting hole 202 are an interference fit. When the auxiliary contact module 100 is installed on the contactor 200, the limiting member 24 inserts into the corresponding first limiting hole 202 on the contactor 200, thereby limiting the auxiliary contact module 100 in the second direction. This plug-in connection method is not only simple and reliable, but also ensures that the auxiliary contact module 100 maintains a stable connection during long-term use, preventing loosening or detachment.

[0054] By providing a first assembly unit and / or a second assembly unit on the auxiliary contact module 100, this invention significantly reduces the number of parts in the auxiliary contact module 100, avoiding problems such as structural complexity and cumbersome assembly caused by too many parts, thereby improving production efficiency and reducing manufacturing costs. Secondly, the synergistic effect of the first latch 22, the second latch 23, and the limiting member 24 ensures a stable connection between the auxiliary contact module 100 and the contactor 200, maintaining reliable electrical connection and mechanical fixation even in harsh working environments. Furthermore, this simplified structural design makes the assembly process of the auxiliary contact module 100 more intuitive and easier, reducing the skill requirements for operators and further enhancing the product's practicality.

[0055] Optionally, the second hook 23 is rigidly connected to the mounting wall 21, and the first hook 22 is elastically connected to the mounting wall 21, with the first hook 22 inclined toward the second hook 23. During installation, the second hook 23 abuts against the side wall of the contactor for pre-installation positioning, while the first hook 22 uses its own elastic deformation to tightly abut against the other side wall of the contactor to achieve a fixed assembly effect.

[0056] For example, such as Figure 3 and Figure 4As shown, the first hook 22 includes a first support portion 221 and a first bending portion 222. One end of the first support portion 221 is connected to the mounting wall 21 of the mounting housing 2, and the other end of the first support portion 221 is connected to the first bending portion 222. The other end of the first support portion 221 is inclined toward the direction of the second hook 23. The first bending portion 222 is used to engage with the side wall of the contactor 200. And / or the second hook 23 includes a second support portion 231 and a second bending portion 232. One end of the second support portion 231 is connected to the mounting wall 21 of the mounting housing 2, and the other end of the second support portion 231 is connected to the second bending portion 232. The second bending portion 232 is used to engage with the side wall of the contactor 200. Specifically, the first hook 22 adopts a unique one-piece molded structure, which includes an integrally connected first support portion 221 and first bending portion 222. The first support portion 221 serves as a bridge connecting the entire first hook 22 to the mounting wall 21 of the mounting housing 2. Its end away from the first bend 222 is securely connected to the mounting wall 21 of the mounting housing 2. This connection method ensures the stability of the first hook 22 on the mounting housing 2, laying the foundation for a stable connection with the contactor 200. Simultaneously, the first support portion 221 and the first bend 222 are not connected in a straight line, but rather at a certain angle. This angled design allows the first bend 222 to better perform its hooking function under stress. When the auxiliary contact module 100 is installed onto the contactor 200, the first bend 222 can precisely hook onto one side wall of the contactor 200, effectively preventing displacement or loosening of the auxiliary contact module 100 relative to the contactor 200 in the first direction, thus ensuring connection stability. Similarly, the second hook 23 also adopts a similar integral molding design, comprising an integrally connected second support portion 231 and a second bend 232. The end of the second support portion 231 furthest from the second bend portion 232 is tightly connected to the mounting wall 21 of the mounting housing 2, providing solid support for the second hook 23. The second support portion 231 and the second bend portion 232 are also angled together, a design principle similar to the first hook 22. During the installation of the auxiliary contact module 100, the second bend portion 232 can accurately hook onto the other side wall of the contactor 200. By having the first bend portion 222 and the second bend portion 232 hook onto the two side walls of the contactor 200 respectively, a symmetrical and stable clamping structure is formed, further enhancing the connection strength between the auxiliary contact module 100 and the contactor 200. This design of the first hook 22 and the second hook 23 brings many significant advantages. First, the integrated structural design reduces the number of parts, avoiding problems such as loose connections and uneven gaps that may occur due to the assembly of multiple parts, thus improving the structural compactness and reliability of the entire auxiliary contact module 100.Secondly, the angles between the first support portion 221 and the first bending portion 222, and between the second support portion 231 and the second bending portion 232, allow the hook to generate greater friction and hooking force when it engages with the side wall of the contactor 200. This effectively prevents the auxiliary contact module 100 from separating from the contactor 200 during use due to vibration, impact, or other factors, greatly improving the stability and anti-interference capability of the connection. Furthermore, this design simplifies the installation process. Operators only need to align the auxiliary contact module 100 with the contactor 200 and apply appropriate pressure to ensure the first bending portion 222 and the second bending portion 232 smoothly engage with the side walls of the contactor 200. This completes the installation without complicated procedures or specialized tools, improving installation efficiency and convenience.

[0057] For example, the angle A at the connection between the first support portion 221 and the mounting wall 21 of the mounting housing 2 is an acute angle, and the protective housing can be made of plastic. This allows the second support portion 231 to have a certain amount of deformation. This allows the auxiliary contact module 100 to adapt to contactors 200 of various widths. When subjected to external forces, the first support portion 221 is no longer a rigid and immutable component, but has a certain degree of deformation capability. Specifically, when the auxiliary contact module 100 is installed on the contactor 200, or when it is subjected to the reaction force generated by the contactor 200 during use, the first support portion 221 can undergo moderate elastic deformation based on the structure of this acute angle A. This allows the first support portion 221 to flexibly adjust its shape according to the magnitude and direction of the force it bears, giving the auxiliary contact module 100 strong versatility and compatibility, enabling it to adapt to contactors 200 of various widths. In actual electrical applications, the specifications and dimensions of the contactor 200 often vary due to different manufacturers, usage environments, and functional requirements, with the diversity of width dimensions being particularly common. Traditional auxiliary contact modules 100, due to their fixed structure, lack this flexible deformation capability and can often only adapt to contactors 200 within a specific width range. Once the width of the contactor 200 exceeds its design range, problems such as installation difficulties and loose connections arise, seriously affecting the stability and reliability of the electrical system. However, the auxiliary contact module 100 of this invention cleverly solves this problem by utilizing the deformation capacity generated by the acute angle A at the connection between the first support portion 221 and the mounting wall 21 of the mounting housing 2. When encountering a narrower contactor 200, the first support portion 221 experiences less external force during installation, resulting in relatively small deformation. However, it can still form a stable hook connection with the side wall of the contactor 200 through the first bending portion 222, ensuring a tight fit between the auxiliary contact module 100 and the contactor 200, preventing loosening or detachment due to insufficient contactor 200 width. Conversely, when the contactor 200 is wider, the first support portion 221 will be subjected to greater external force, resulting in a corresponding increase in its deformation. The first bending portion 222 can adjust its position according to the deformation of the first support portion 221, still accurately hooking onto the side wall of the contactor 200 for reliable connection. This characteristic of automatically adjusting the deformation based on the width of the contactor 200 allows the auxiliary contact module 100 to exhibit stable performance on contactors 200 of different widths, greatly expanding its application range.

[0058] Furthermore, such as Figure 2 Combination Figure 7As shown, the contactor 200 is provided with a second limiting hole 201, and the protective shell includes a boss 25, which is disposed on the mounting wall 21 of the mounting shell 2. The boss 25 is inserted into the second limiting hole 201 of the contactor 200. The cooperation between the boss 25 and the second limiting hole 201 greatly ensures the stability of the assembly. In the actual operation of the electrical system, it will inevitably be subjected to various external forces, such as vibration and impact. These external forces may cause the connection between the auxiliary contact module 100 and the contactor 200 to loosen, thereby affecting the transmission of electrical signals and the normal operation of the system. The tight insertion of the boss 25 and the second limiting hole 201 can effectively resist the influence of these external forces, ensuring that the auxiliary contact module 100 is always firmly fixed on the contactor 200, maintaining a stable electrical and mechanical connection, thereby improving the reliability and stability of the entire electrical system.

[0059] In this embodiment, the boss 25 is specifically positioned on the upper half of the mounting housing 2, while the first assembly unit and the second assembly unit are located on the lower half of the mounting housing 2. This layout design embodies profound technical considerations and significant advantages. From a mechanical balance perspective, the mounting housing 2 has connection points for assembly with the contactor 200 at both the top and bottom, making the force on the auxiliary contact module 100 on the contactor 200 more even. When subjected to external force, the connection between the upper boss 25 and the second limiting hole 201, as well as the connection between the lower first assembly unit and the second assembly unit and the contactor 200, can share the external force, avoiding the problem of connection point damage or module deformation caused by force concentration. This balanced force distribution helps extend the service life of the auxiliary contact module 100 and the contactor 200, reducing the cost and time waste caused by frequent maintenance and replacement. From an assembly process perspective, the upper and lower distributed connection point design makes the assembly process more orderly and efficient. The operator can first preliminarily position and connect the upper part of the auxiliary contact module 100 to the second limiting hole 201 on the contactor 200 via the boss 25, and then precisely adjust and fix the first and second assembly units of the lower part. This step-by-step assembly method reduces the difficulty and complexity of assembly and improves the accuracy and efficiency of assembly.

[0060] For example, at least two limiting members 24 are provided, and the at least two limiting members 24 are spaced apart along a first direction on the mounting wall 21 of the mounting housing 2. Multiple limiting members 24 constrain the auxiliary contact module 100 at different positions, forming a multi-point support and fixation effect. When the auxiliary contact module 100 is subjected to external forces, such as vibration, impact, or accidental tensile force, a single limiting member 24 may not be able to withstand all the force, leading to loosening or damage. However, by having at least two limiting members 24 spaced apart along the first direction, the external force can be distributed to each limiting member 24, and each limiting member 24 only needs to bear a portion of the force, thereby greatly improving the overall assembly structure's resistance to external forces. By increasing the number of limiting members 24, the assembly firmness can be further improved, preventing it from falling off.

[0061] For example, the end of the limiting member 24 facing away from the mounting wall 21 is recessed with a strain groove 241. The strain groove 241 can deform under force, so that the limiting member 24 can be inserted into the first limiting hole 202 of the contactor 200 (which reduces the opening of the strain groove 241) and has an interference fit with the first limiting hole 202. The size of the limiting member 24 is not smaller than the diameter of the first limiting hole 202. After the two are inserted, they have an interference fit. By adding the strain groove 241, it is convenient for the limiting member 24 to be inserted into the first limiting hole 202. The presence of the strain groove 241 allows the limiting member 24 to generate local elastic deformation at the groove when it is compressed, thereby better adapting to the shape and size of the first limiting hole 202. This elastic deformation can increase the friction and mechanical interlocking force between the limiting member 24 and the first limiting hole 202, further improving the connection strength between the two. Compared with the ordinary limiting member 24 without the strain groove 241, the limiting member 24 with the strain groove 241 can be more firmly fixed in the first limiting hole 202 after insertion, and is not easy to loosen or fall off.

[0062] Furthermore, such as Figure 2 Combination Figure 5 and Figure 7As shown, the mounting wall 21 of the mounting housing 2 is provided with a strip-shaped clearance hole 211 extending in a third direction. The auxiliary contact module 100 also includes a stationary contact 3 and a moving contact assembly. The stationary contact 3 is disposed within the mounting housing 2. The moving contact assembly includes a moving contact 4 and a contact support 5 provided with a transmission connector 51. The moving contact 4 is disposed on the contact support 5. The contact support 5 is slidably disposed within the mounting housing 2 in a third direction and is used to drive the moving contact 4 to close or separate from the stationary contact 3. The transmission connector 51 passes through the strip-shaped clearance hole 211 and extends out. On the one hand, the transmission connector 51 needs to pass through the strip-shaped clearance hole 211 and extend out of the mounting housing 2. The strip-shaped clearance hole 211 provides the necessary movement space for the transmission connector 51, and its extension design in a third direction fully considers the movement trajectory of the transmission connector 51 when the contact support 5 slides. During the movement of the moving contact 4 driven by the contact support 5, the transmission connector 51 will undergo corresponding displacement along a third direction within the strip-shaped clearance hole 211. The strip-shaped clearance hole 211 ensures that the transmission connector 51 will not be interfered with or jammed during movement, guaranteeing the smoothness and reliability of the transmission connection. On the other hand, the strip-shaped clearance hole 211 also serves as an isolation and protection mechanism. It appropriately separates the interior of the mounting housing 2 from the external environment, preventing dust, debris, and other external contaminants from entering the mounting housing 2 and affecting the normal operation of critical components such as the stationary contact 3 and the moving contact 4. Simultaneously, it provides a relatively independent movement channel for the transmission connector 51, reducing friction and collisions with other components and extending the service life of the components.

[0063] For example, the contactor 200 has a third limiting hole 203 and a drive structure inside. The portion of the transmission connector 51 extending out of the strip-shaped clearance hole 211 passes through the third limiting hole 203 and is connected to the drive mechanism. This connection method cleverly integrates the moving contact assembly of the auxiliary contact module 100 with the drive mechanism of the contactor 200. The drive mechanism inside the contactor 200 can precisely drive the contact 4 support member to move according to actual usage needs. When the drive mechanism receives a corresponding control signal, it transmits power to the contact support member 5 through the transmission connector 51, causing the contact support member 5 to slide along a third direction. The movement of the contact support member 5 then drives the moving contact 4 to move closer to or further away from the stationary contact 3, realizing the closing or opening of the moving contact 4 and the stationary contact 3. This closing and opening operation can quickly and accurately control the on / off state of the electrical circuit, meeting the circuit control requirements of different electrical systems.

[0064] Furthermore, such as Figure 5 Combination Figure 6As shown, the auxiliary contact module 100 also includes a spring seat 6 and a reaction spring 7. The spring seat 6 is disposed within the mounting housing 2 and has a positioning post 61. One end of the reaction spring 7 is sleeved on the positioning post 61, and the other end of the reaction spring 7 abuts against the contact support member 5 of the moving contact assembly. The reaction spring 7 always tends to keep the normally open moving contact 4 and the normally open stationary contact 3 normally open, or to keep the normally closed moving contact 4 and the normally closed stationary contact 3 normally closed. The positioning post 61 on the spring seat 6 provides a stable support point and guide for the reaction spring 7. When the reaction spring 7 is subjected to vertical pressure, the positioning post 61 can restrict the movement of the reaction spring 7 in the horizontal direction, so that it can only be reasonably compressed or extended in the vertical direction, thereby ensuring that the elastic force direction of the reaction spring 7 is always along the expected axial direction and avoiding left and right bending deviation. This stable design ensures that the reaction spring 7 can consistently maintain the normally open or normally closed tendency of the moving contact 4 and the stationary contact 3, thereby improving the reliability and stability of the entire auxiliary contact module 100.

[0065] In practical electrical control scenarios, when the drive mechanism of contactor 200 is not in operation, the return spring 7 becomes the key factor determining the state of the moving contact 4 and the stationary contact 3. If designed for a normally open state, the spring force of the return spring 7 will pull the moving contact 4 away from the stationary contact 3, maintaining a certain gap between them and ensuring that the electrical circuit is disconnected. Conversely, if designed for a normally closed state, the spring force of the return spring 7 will press the moving contact 4 firmly against the stationary contact 3, ensuring that the electrical circuit remains continuously connected. This state-holding function achieved by the return spring 7 provides a fundamental guarantee for the stable operation of the electrical system, avoiding the problem of uncertain states of the moving contact 4 and the stationary contact 3 due to unexpected situations or drive mechanism failures.

[0066] Furthermore, both ends of the spring seat 6 are provided with limiting ribs 61, and two positioning structures 26 with positioning grooves 261 are arranged at intervals along the first direction inside the mounting housing 2. The positioning grooves 261 of the positioning structures 26 are correspondingly arranged with the limiting ribs 61, and the limiting ribs 61 are inserted into the positioning grooves 261. This insertion design of the positioning structures 26 and the limiting ribs can effectively restrict the degree of freedom of movement of the spring seat 6 within the mounting housing 2, prevent the spring seat 6 from being displaced due to vibration or external force during operation, and ensure that the spring seat 6 is always in the correct position, thereby ensuring a stable and reliable contact state between the reaction spring 7 and the moving contact assembly. Secondly, the two positioning structures 26 are arranged at intervals along the first direction, which can disperse the force on the spring seat 6 and avoid deformation or damage to the spring seat 6 due to excessive local force.

[0067] Furthermore, the mounting wall 21 of the mounting housing 2 is provided with several riveting holes 212, and the cover plate 1 is provided with several riveting posts 11. The riveting posts 11 pass through the riveting holes 212 and are riveted. During the riveting operation, the cover plate 1 is accurately placed on the mounting housing 2, so that the riveting posts 11 are aligned with the riveting holes 212 and inserted. Then, pressure is applied to the top of the riveting posts 11 using a special riveting tool. Under the action of pressure, the material at the top of the riveting posts 11 begins to undergo plastic deformation, gradually spreading outwards and filling the internal space of the riveting holes 212. As the pressure continues to increase, the deformed part of the riveting posts 11 will tightly fit against the inner wall of the riveting holes 212, forming a strong mechanical connection. This riveting method does not require additional connecting parts, such as bolts and nuts, simplifying the connection structure and improving assembly efficiency.

[0068] like Figure 7 As shown, this embodiment also provides a control electrical appliance, which includes a contactor 200 and the aforementioned auxiliary contact module 100. The contactor 200 is provided with a first limiting hole 202. The first hook 22 and the second hook 23 of the auxiliary contact module 100 are clamped on the two side walls of the contactor 200 along a first direction. The limiting member 24 of the auxiliary contact module 100 is inserted into the first limiting hole 202 and is interference-fitted. This ensures the stable connection between the auxiliary contact module 100 and the contactor 200, which not only simplifies the structure of the auxiliary contact module 100 but also reduces the number of parts in the auxiliary contact module 100.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An auxiliary contact module, characterized in that, include: Protective casing with mounting wall (21); A first assembly unit and / or a second assembly unit, the first assembly unit including a first hook (22) and a second hook (23), the first hook (22) and the second hook (23) being spaced apart along a first direction on the mounting wall (21), at least one of the first hook (22) and the second hook (23) being elastically connected to the mounting wall (21), the first hook (22) and the second hook (23) forming a clamping interval for clamping the two side walls of the contactor (200), the second assembly unit including a limiting member (24), the limiting member (24) being disposed on the mounting wall (21), the limiting member (24) being used to insert into the first limiting hole (202) of the contactor (200), and the limiting member (24) being interference-fitted with the first limiting hole (202).

2. The auxiliary contact module according to claim 1, characterized in that, The second hook (23) is rigidly connected to the mounting wall (21), the first hook (22) is elastically connected to the mounting wall (21), and the first hook (22) is inclined toward the second hook (23).

3. The auxiliary contact module according to claim 2, characterized in that, The first hook (22) includes a first support portion (221) and a first bending portion (222). One end of the first support portion (221) is connected to the mounting wall (21), and the other end of the first support portion (221) is connected to the first bending portion (222). The other end of the first support portion (221) is inclined toward the direction of the second hook (23). The first bending portion (222) is used to engage with the side wall of the contactor (200); and / or, The second hook (23) includes a second support portion (231) and a second bending portion (232). One end of the second support portion (231) is connected to the mounting wall (21), and the other end of the second support portion (231) is connected to the second bending portion (232). The second bending portion (232) is used to engage with the side wall of the contactor (200).

4. The auxiliary contact module according to claim 1, characterized in that, At least two limiting members (24) are provided, and at least two limiting members (24) are spaced apart along a first direction on the mounting wall (21); and / or, The limiting member (24) has a strain groove (241) recessed at one end away from the mounting wall (21). The strain groove (241) can deform under force so that the limiting member (24) is inserted into the first limiting hole (202) of the contactor (200) and is interference-fitted with the first limiting hole (202).

5. The auxiliary contact module according to claim 1, characterized in that, The protective shell includes a boss (25) disposed on the mounting wall (21), and the boss (25) is inserted into the second limiting hole (201) of the contactor (200).

6. The auxiliary contact module according to claim 1, characterized in that, The mounting wall (21) is provided with a strip-shaped clearance hole (211) extending in a third direction, and the auxiliary contact module further includes: A stationary contact (3) is disposed within the protective housing. The moving contact assembly includes a moving contact (4) and a contact support (5). The moving contact (4) is disposed on the contact support (5). The contact support (5) is provided with a transmission connector (51). The contact support (5) is slidably disposed in the protective shell and is used to drive the moving contact (4) to close or separate from the stationary contact (3). The transmission connector (51) passes through the strip-shaped clearance hole (211) and extends out.

7. The auxiliary contact module according to claim 6, characterized in that, The auxiliary contact module also includes: A spring seat (6) is disposed inside the protective shell, and the spring seat (6) has a positioning post (61); A reaction spring (7) is provided, one end of which is sleeved on the positioning post (61), and the other end of which abuts against the contact support (5). The reaction spring (7) always has the tendency to keep the normally open moving contact (4) and the stationary contact (3) normally open, or to keep the normally closed moving contact (4) and the stationary contact (3) normally closed.

8. The auxiliary contact module according to claim 7, characterized in that, Both ends of the spring seat (6) are provided with limiting ribs (62), and the protective shell is provided with a positioning structure (26) corresponding to the limiting ribs (62). The positioning structure is provided with a positioning groove (261), and the limiting ribs (62) are inserted into the positioning groove (261).

9. The auxiliary contact module according to any one of claims 1-8, characterized in that, The protective shell includes a cover plate (1) and a mounting shell (2). The cover plate (1) is fastened to the mounting shell (2). The cover plate (1) and the mounting shell (2) form a mounting chamber. The side of the mounting shell (2) away from the cover plate (1) is the mounting wall (21). The mounting wall (21) is provided with a plurality of riveting holes (212). The cover plate (1) is provided with a plurality of riveting posts (11). The riveting posts (11) pass through the riveting holes (212) and are riveted.

10. A control appliance, characterized in that, Includes a contactor (200) and an auxiliary contact module as described in any one of claims 1-9, wherein the contactor (200) is provided with a first limiting hole (202), and the first hook (22) and the second hook (23) of the auxiliary contact module are clamped on the two side walls of the contactor (200) along a first direction.

Images