A contactor

Abstract

The application provides a contactor, and relates to the technical field of low-voltage electrical apparatuses. The contactor comprises a base and a contact support. The base is provided with a mounting hole. The contact support is arranged in the mounting hole and can move along the axial direction of the mounting hole. A guide rib extending along the axial direction of the mounting hole is arranged between the mounting hole and the contact support. The guide rib is fixed relative to one of the mounting hole and the contact support, and is in contact with the other one of the mounting hole and the contact support to guide the contact support. Without arranging a structure matched with the guide rib on the other one of the mounting hole and the contact support, the friction pair between the contact support and the base is reduced to a certain extent, the friction force between the contact support and the base is reduced, the contact support moves more smoothly when the state of the contactor is switched, the moving efficiency of the contact support is improved, and the switching efficiency of the contactor is ensured.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more particularly to a contactor. Background Technology

[0002] A contactor is an automatic switching device that connects or disconnects the main circuit of a motor or load. It uses electromagnetic force to close or open the switch and is suitable for frequent operation and remote control of high-voltage circuits. It also has low-voltage release protection. Used for long-term, high-frequency switching of AC main circuits and control circuits, it features automatic operation, undervoltage and overvoltage protection, high-capacity operation, high stability, and low maintenance requirements.

[0003] In related technologies, a contactor includes a base, a stationary contact, and a contact support on which the moving contact is mounted. The base has a mounting hole, and a slide rail is provided on the wall of the mounting hole. A slider is provided on the circumferential outer wall of the contact support. The contact support slides through the mounting hole via the cooperation of the slider and the slide rail. The movement of the contact support can switch the state between the moving and stationary contacts, making them contact to connect the circuit or separating them to disconnect the circuit. However, the contact support and the base have multiple friction pairs and high frictional force, resulting in low movement efficiency of the contact support and affecting the switching efficiency of the contactor. Utility Model Content

[0004] This application provides a contactor that reduces the friction pair between the contact support and the base to a certain extent, reduces friction, improves the movement efficiency of the contact support, and ensures the switching efficiency of the contactor.

[0005] This application provides a contactor, including a base and a contact support on which a moving contact is mounted.

[0006] The base has a mounting hole, and the contact support passes through the mounting hole and can move axially along the mounting hole. A guide rib is provided between the mounting hole and the contact support, extending axially along the mounting hole. The guide rib is fixed relative to one of the mounting hole and the contact support. When the contact support moves axially along the mounting hole, the guide rib contacts the other of the mounting hole and the contact support to guide the movement of the contact support.

[0007] The contactor provided in this application uses a guide rib between a mounting hole and a contact support, with the guide rib extending axially along the mounting hole. The guide rib is fixed relative to one of the mounting hole and the contact support. When the contact support moves axially along the mounting hole, the guide rib contacts the other of the mounting hole and the contact support; that is, when the contact support moves within the mounting hole, it contacts the mounting hole through the guide rib. Because the guide rib extends axially along the mounting hole, it guides the movement of the contact support when the contact support moves axially along the mounting hole to switch the contactor's state. Furthermore, since the contact support contacts the mounting hole via guide ribs during movement, compared to the existing technology which requires a slide rail on the wall of the mounting hole and a slider on the circumferential outer wall of the contact support, with the contact support requiring the cooperation of the slider and the slide rail to guide its movement, the contactor provided in this embodiment only needs guide ribs on either the mounting hole or the contact support to guide its movement. There is no need for a structure on the other side of the mounting hole to cooperate with the guide ribs. In other words, the guide ribs can guide the movement of the contact support without requiring a cooperating structure, which reduces the friction pair between the contact support and the base to a certain extent, lowers the frictional force between them, and allows the contact support to move more smoothly when switching the contactor's state, thereby improving the movement efficiency of the contact support and ensuring the switching efficiency of the contactor.

[0008] In one possible design, the dimensions of the guide ribs decrease sequentially along the circumferential direction of the mounting hole in the direction of their protrusion.

[0009] Through the above technical solution, the dimensions of the guide rib in the circumferential direction of the mounting hole decrease sequentially in its convex direction. That is, along the direction from the guide seat to the contact support, the dimensions of the guide rib in the circumferential direction of the mounting hole decrease sequentially. The side of the guide rib that connects to one of the mounting hole and the contact support is wider, and the side of the guide rib that contacts the other of the mounting hole and the contact support is narrower. In this way, while satisfying structural strength and guidance, the contact area between the guide rib and the contact support is reduced, thereby further reducing the friction pair and friction force between the contact support and the base, improving the smoothness of the contact support's movement when switching the contactor's state, and further improving the movement efficiency of the contact support, thus ensuring the switching efficiency of the contactor.

[0010] In one possible design, the side of the guide rib that contacts the other of the mounting hole and the contact support is an arc-shaped surface, which protrudes towards the other of the mounting hole and the contact support.

[0011] By using the above technical solution, the side of the guide rib that contacts the mounting hole or the contact support is set as an arc surface, so that the contact between the guide rib and the mounting hole or the contact support is a line contact. This further reduces the contact area between the mounting hole and the contact support, thereby further reducing the friction pair and friction force between the contact support and the base, improving the smoothness of the contact support's movement when switching the contactor's state, and further improving the movement efficiency of the contact support, thus ensuring the switching efficiency of the contactor.

[0012] In one possible design, there are at least two guide ribs, which are arranged at circumferential intervals along the mounting hole and distributed at least on opposite sides of the contact support.

[0013] The above technical solution involves setting multiple guide ribs between the mounting hole and the contact support, with these ribs spaced circumferentially around the mounting hole. When the contact support moves, it contacts the hole wall via these guide ribs. This reduces the contact area between the contact support and the mounting hole, further minimizing friction between them and improving the contact support's movement efficiency, thus facilitating rapid circuit connection or disconnection by the contactor. Furthermore, the guide ribs all guide the movement of the contact support, enhancing its guiding effect and ensuring rapid switching of the contactor's operating state.

[0014] In one possible design, a discharge groove for removing impurities is formed between two adjacent guide ribs, and both ends of the discharge groove are open along the axial direction of the mounting hole.

[0015] The above technical solution forms a discharge groove between two adjacent guide ribs, so that impurities generated during the movement of the contact support can enter the discharge groove and be discharged along the discharge groove, thus improving the convenience of impurity discharge.

[0016] In one possible design, the contactor also includes an insulated guide seat. The guide seat is disposed between the mounting hole and the contact support, and is fixed relative to one of the mounting hole and the contact support, with guide ribs disposed on the guide seat.

[0017] The above technical solution connects the guide rib between the mounting hole and the contact support via the guide seat, which facilitates the assembly of the guide rib and helps to improve the structural strength and service life of the guide rib, thus helping to extend the service life of the contactor provided in this embodiment.

[0018] In one possible design, the guide seat is a guide ring, the shape of which matches the shape of the mounting hole.

[0019] The above technical solution uses a guide ring as the guide seat, which has a simple structure and is easy to manufacture and assemble. Furthermore, the shape of the guide ring matches the shape of the mounting hole, improving the fit between the guide ring and the mounting hole. This helps to enhance the connection strength of the guide seat in the mounting hole, thereby providing a more stable guiding effect for the contact support.

[0020] In one possible design, a stationary contact is provided on the base for contacting the moving contact, and the stationary contact is located on the side of the mounting hole facing the moving contact. When the guide seat is fixed relative to the mounting hole, one end of the guide seat abuts against the stationary contact, and the side of the mounting hole opposite to the stationary contact has a stop flange, and the other end of the guide seat abuts against the stop flange.

[0021] Through the above technical solution, a stop flange is set on the side of the mounting hole away from the stationary contact, and the guide seat is connected to the mounting hole. One end of the guide seat abuts against the stationary contact, and the other end of the guide seat abuts against the stop flange. In this way, the guide seat is confined within the space formed by the stationary contact and the stop flange. The stationary contact and the stop flange play a limiting role for the guide seat, preventing the guide seat from moving axially along the mounting hole, and improving the structural stability of the guide seat on the mounting hole. In this way, while satisfying the guiding function, the impact of friction on the contact support is further reduced, making the movement of the contact smoother and more stable.

[0022] In one possible design, a first limiting part is provided on the guide seat, and a second limiting part is provided on one of the mounting hole and the contact support. The first limiting part and the second limiting part cooperate to at least circumferentially limit the guide seat.

[0023] Through the above technical solution, a first limiting part is set on the guide seat and a second limiting part is set on the mounting hole. Through the cooperation of the first limiting part and the second limiting part, the guide seat is circumferentially limited, which prevents the guide seat from moving circumferentially along the mounting hole. This further improves the structural stability of the guide seat on the mounting hole. Thus, while satisfying the guiding function, the influence of friction on the contact support is further reduced, making the movement of the contact smoother and more stable.

[0024] In one possible design, the first limiting portion includes a first limiting protrusion that extends axially along the mounting hole, and the second limiting portion includes a first limiting groove into which the first limiting protrusion can extend.

[0025] The above technical solution provides a first limiting protrusion on the guide seat and a first limiting groove on the wall of the mounting hole. Both the first limiting protrusion and the first limiting groove extend along the axial direction of the mounting hole. The structure is simple, easy to manufacture, and provides good limiting effect on the guide seat.

[0026] In one possible design, a stationary contact is provided on the base for contacting the moving contact, a third limiting part is provided on the side of the base away from the stationary contact, and a fourth limiting part is provided on the guide seat. The third limiting part and the fourth limiting part cooperate to limit the guide seat.

[0027] Through the above technical solution, a third limiting part is set on the base and a fourth limiting part is set on the guide seat. Through the cooperation of the third limiting part and the fourth limiting part, the guide seat plays a further circumferential limiting role, which prevents the guide seat from moving on the base and further improves the structural stability of the guide seat on the base. Thus, while satisfying the guiding function, the influence of friction on the contact support is further reduced, making the movement of the contact smoother and more stable.

[0028] In one possible design, the third limiting part includes a second limiting groove, and the fourth limiting part includes a second limiting protrusion that can extend into the second limiting groove.

[0029] The above technical solution involves setting a second limiting groove on the base and a second limiting protrusion on the wall of the mounting hole. Both the second limiting protrusion and the second limiting groove extend along the axial direction of the mounting hole. The structure is simple, easy to manufacture, and provides good circumferential limiting effect on the guide seat. Attached Figure Description

[0030] Figure 1 This is a top view of a contactor according to an embodiment of this application.

[0031] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0032] Figure 3 for Figure 1 A cross-sectional view along the middle BB.

[0033] Figure 4 for Figure 1 A cross-sectional view along the center CC.

[0034] Figure 5 for Figure 1 A sectional view along the middle DD.

[0035] Figure 6 This is an isometric view of the guide seat of the contactor according to an embodiment of this application.

[0036] Figure 7 This is a top view of the guide seat of the contactor according to an embodiment of this application.

[0037] Figure 8 This is a side view of the guide seat of a contactor according to an embodiment of this application.

[0038] Figure 9This is an isometric view of the base and stationary contact of a contactor according to an embodiment of this application.

[0039] Figure 10 for Figure 9 Enlarged view of section E in the middle.

[0040] Figure 11 This is a top view of the base and stationary contact of a contactor according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached drawings: 1. Base; 2. Moving contact; 3. Contact support; 4. Mounting hole; 41. Stop flange; 5. Discharge groove; 6. Guide seat; 61. Guide rib; 62. First limiting part; 7. Stationary contact; 81. Second limiting part; 82. Third limiting part; 83. Fourth limiting part. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0044] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0046] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the contactor of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0048] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] A contactor is an automatic switching device that connects or disconnects the main circuit of a motor or load. It uses electromagnetic force to close or open the switch and is suitable for frequent operation and remote control of high-voltage circuits. It also has low-voltage release protection. Used for long-term, high-frequency switching of AC main circuits and control circuits, it features automatic operation, undervoltage and overvoltage protection, high-capacity operation, high stability, and low maintenance requirements.

[0051] In related technologies, a contactor includes a base, a stationary contact, and a contact support on which the moving contact is mounted. The base has a mounting hole, and a slide rail is provided on the wall of the mounting hole. A slider is provided on the circumferential outer wall of the contact support. The contact support slides through the mounting hole via the cooperation of the slider and the slide rail. The movement of the contact support can switch the state between the moving and stationary contacts, making them contact to connect the circuit or separating them to disconnect the circuit. However, the contact support and the base have multiple friction pairs and high frictional force, resulting in low movement efficiency of the contact support and affecting the switching efficiency of the contactor.

[0052] Based on this, this embodiment provides a contactor by providing a guide rib between the mounting hole of the contact support and the base. The guide rib extends axially along the mounting hole and is fixed relative to one of the mounting hole and the contact support. When the contact support moves axially along the mounting hole to switch the state of the contactor, the guide rib contacts the other of the mounting hole and the contact support, thus guiding the movement of the contact support. Compared with the prior art where a slide rail is provided on the wall of the mounting hole and a slider is provided on the circumferential outer wall of the contact support, and the contact support passes through the mounting hole through the cooperation of the slider and the slide rail, there is no need to provide a structure on the other of the mounting hole and the contact support to cooperate with the guide rib. This reduces the friction pair between the contact support and the base to a certain extent, lowers the frictional force between the contact support and the base, and makes the contact support move more smoothly when switching the state of the contactor, improving the movement efficiency of the contact support and ensuring the switching efficiency of the contactor.

[0053] The contactor provided in this embodiment will be described in detail below with reference to the accompanying drawings and specific examples.

[0054] refer to Figures 1 to 5 As shown, this embodiment provides a contactor, which includes a base 1 and a contact support 3.

[0055] Among them, reference Figure 2 and Figure 3 As shown, a moving contact 2 is mounted on the contact support 3. The moving contact 2 is fixed relative to the contact support 3.

[0056] For details, please refer to Figures 1 to 3 As shown, the base 1 is provided with a mounting hole 4, and the contact support 3 passes through the mounting hole 4 and can move along the axial direction of the mounting hole 4 (refer to...). Figure 3 (In the X direction) movement. When contact 3 moves, it can drive contact 2 to move.

[0057] refer to Figure 3 As shown, a stationary contact 7 is also provided on the base 1. The stationary contact 7 is located on the side of the mounting hole 4 facing the moving contact 2. That is to say, the stationary contact 7 and the moving contact 2 are located on the same side of the mounting hole 4 in the axial direction.

[0058] In practice, the stationary contact 7 and the moving contact 2 are positioned opposite each other along the axial direction of the mounting hole 4. By adjusting the contact state between the moving contact 2 and the stationary contact 7, the state of the contactor can be switched to connect or disconnect the circuit.

[0059] Specifically, the moving contact 2, driven by the contact support 3, can move towards the stationary contact 7 (see reference). Figure 3 The moving contact 2 moves downwards along the X direction, bringing it into contact with the stationary contact 7. The moving contact 2 and stationary contact 7 are electrically connected, thus completing the circuit. Furthermore, the moving contact 2, driven by the contact support 3, can move away from the stationary contact 7 (see reference). Figure 3 (Moving upwards along the X direction) separates the moving contact 2 from the stationary contact 7, thus cutting off the circuit.

[0060] In practice, the contact supports three moving driving forces, such as electromagnetic force, elastic force, etc.

[0061] refer to Figure 2 and Figure 3 As shown, a guide rib 61 is provided between the mounting hole 4 and the contact support 3. The guide rib 61 extends along the axial direction of the mounting hole 4 and is fixed relative to one of the mounting hole 4 and the contact support 3. When the contact support 3 moves along the axial direction of the mounting hole 4, the guide rib 61 contacts the other of the mounting hole 4 and the contact support 3 to guide the movement of the contact support 3.

[0062] In other words, a guide rib 61 is connected to one of the mounting hole 4 and the contact support 3, and the guide rib 61 contacts the other of the mounting hole 4 and the contact support 3 when the contact support 3 moves, and the guide rib 61 guides the movement of the contact support 3.

[0063] By connecting a guide rib 61 to either the mounting hole 4 or the contact support 3, the guide rib 61 extends axially along the mounting hole 4, meaning its extension direction is consistent with the moving direction of the contact support 3. Furthermore, when the contact support 3 moves, the guide rib 61 contacts the other of the mounting hole 4 and the contact support 3. Thus, the guide rib 61 guides the movement of the contact support 3, facilitating the movement of the contact 2 and enabling the switching of the contactor's operating state.

[0064] Since the guide rib 61 is connected to one of the mounting hole 4 and the contact support 3, and when the contact support 3 moves, the other end of the guide rib 61 directly contacts the other of the mounting hole 4 and the contact support 3 to play a guiding role, there is no need to set a structure that cooperates with the guide rib 61 on the other of the mounting hole 4 and the contact support 3. This reduces the friction pair between the contact support 3 and the base 1 to a certain extent, reduces the friction force between the contact support 3 and the base 1, and makes the contact support 3 move more smoothly when switching the state of the contactor, thereby improving the moving efficiency of the contact support 3 and ensuring the switching efficiency of the contactor.

[0065] In some implementations, refer to Figure 2 and Figure 3 As shown, the guide rib 61 can be connected to the wall of the mounting hole 4, and the guide rib 61 is fixed relative to the mounting hole 4. When the contact support 3 moves axially along the mounting hole 4, the guide rib 61 contacts the outer wall of the contact support 3.

[0066] For specific implementation, refer to Figure 2 As shown, the guide rib 61 can be indirectly connected to the wall of the mounting hole 4, for example, through the guide seat 6. Of course, in other implementations, the guide rib 61 can be directly connected to the wall of the mounting hole 4.

[0067] In other implementations, the guide rib 61 can be disposed on the outer wall of the contact support 3, and the guide rib 61 is fixed relative to the contact support 3. When the contact support 3 moves axially along the mounting hole 4, the guide rib 61 contacts the hole wall of the mounting hole 4.

[0068] In a specific implementation, the guide rib 61 can be indirectly connected to the outer wall of the contact support 3, for example, through the guide seat 6. Of course, in other implementations, the guide rib 61 can be directly connected to the outer wall of the contact support 3.

[0069] The contactor provided in this embodiment uses a guide rib 61 provided between the mounting hole 4 and the contact support 3, with the guide rib 61 extending axially along the mounting hole 4. The guide rib 61 is fixed relative to one of the mounting hole 4 and the contact support 3. When the contact support 3 moves axially along the mounting hole 4, the guide rib 61 contacts the other of the mounting hole 4 and the contact support 3; that is, when the contact support 3 moves within the mounting hole 4, it contacts the mounting hole 4 through the guide rib 61. Because the guide rib 61 extends axially along the mounting hole 4, it guides the movement of the contact support 3 when the contact support 3 moves axially along the mounting hole 4 to switch the state of the contactor. Furthermore, since the contact support 3 contacts the mounting hole 4 via the guide rib 61 during movement, compared to the prior art where a slide rail is required on the wall of the mounting hole and a slider is required on the circumferential outer wall of the contact support, and the contact support 3 needs the cooperation of the slider and the slide rail to guide its movement, the contactor provided in this embodiment only needs to have the guide rib 61 on one of the mounting hole 4 and the contact support 3 to guide the movement of the contact support 3. There is no need to have a structure on the other of the mounting hole 4 and the contact support 3 that cooperates with the guide rib 61. In other words, the guide rib 61 can guide the movement of the contact support 3 without the need for a cooperating structure, which reduces the friction pair between the contact support 3 and the base 1 to a certain extent, reduces the friction force between the contact support 3 and the base 1, and makes the contact support 3 move more smoothly when switching the state of the contactor, thereby improving the movement efficiency of the contact support 3 and ensuring the switching efficiency of the contactor.

[0070] refer to Figures 2 to 5 As shown, in some embodiments, the contactor further includes an insulated guide seat 6. The guide seat 6 is disposed between the mounting hole 4 and the contact support 3 and is fixed relative to one of the mounting hole 4 and the contact support 3, and a guide rib 61 is disposed on the guide seat 6.

[0071] The guide rib 61 is connected between the mounting hole 4 and the contact support 3 by the guide seat 6, which facilitates the assembly of the guide rib 61 and helps to improve the structural strength and service life of the guide rib 61, thus helping to extend the service life of the contactor provided in this embodiment.

[0072] In practice, the guide rib 61 and the guide seat 6 can be integrally molded, resulting in good integrity, high structural strength, and ease of assembly. Alternatively, the guide rib 61 and the guide seat 6 can also be connected together using structural adhesive, bolts, or other methods.

[0073] In some implementations, refer to Figure 2 and Figure 3As shown, the guide rib 61 is connected to the mounting hole 4 via the guide seat 6, and the guide rib 61 is fixed relative to the mounting hole 4. Specifically, the guide seat 6 is connected to the wall of the mounting hole 4 and fixed relative to the mounting hole 4. The guide rib 61 is connected to the side of the guide seat 6 facing the contact support 3.

[0074] In other embodiments, the guide rib 61 is connected to the contact support 3 via the guide seat 6, and the guide rib 61 is fixed relative to the contact support 3. Specifically, the guide seat 6 is connected to the outer wall of the contact support 3 and is fixed relative to the contact support 3. The guide rib 61 is connected to the side of the guide seat 6 facing the mounting hole 4.

[0075] The following embodiment will be described in detail using the example of the guide rib 61 being connected to the wall of the mounting hole 4 via the guide seat 6.

[0076] refer to Figure 2 , Figure 6 and Figure 7 As shown, in some embodiments, in the protruding direction of the guide rib 61 (i.e., along the direction from the end of the guide rib 61 connected to the guide seat 6 to the end of the guide rib 61 opposite to the guide seat 6, which is positioned as the thickness direction of the guide rib 61), the dimension of the guide rib 61 in the circumferential direction along the mounting hole 4 (defined as the width of the guide rib 61, referencing...) Figure 7 The H in the sequence decreases sequentially.

[0077] By making the width of the guide rib 61 decrease sequentially in its convex direction, that is, by referring to Figure 2 and Figure 7 As shown, along the direction from the guide seat 6 to the contact support 3, the width of the guide rib 61 decreases sequentially. The side of the guide rib 61 that connects to the guide seat 6 is wider, while the side of the guide rib 61 that contacts the contact support 3 is narrower. In this way, while satisfying structural strength and guidance requirements, the contact area between the guide rib 61 and the contact support 3 is reduced, thereby further reducing the friction pair and friction force between the contact support 3 and the base 1. This reduces the impact of friction on the movement of the contact support 3, improves the smoothness of the contact support 3's movement when switching contactor states, and further improves the movement efficiency of the contact support 3, ensuring the switching efficiency of the contactor.

[0078] In some embodiments, reference Figure 2 , Figure 6 and Figure 7 As shown, the side of the guide rib 61 that contacts the other of the mounting hole 4 and the contact support 3 is an arc-shaped surface, and the arc-shaped surface protrudes towards the other of the mounting hole 4 and the contact support 3.

[0079] refer to Figure 2 As shown, the guide rib 61 is connected to the mounting hole 4 via the guide seat 6. (Reference) Figure 6 and Figure 7 As shown, the side of the guide rib 61 that contacts the contact support 3 is an arc-shaped surface, that is, the side of the guide rib 61 facing the contact support 3 is an arc-shaped surface. Furthermore, the arc-shaped surface protrudes towards the contact support 3.

[0080] By setting the side of the guide rib 61 facing the contact support 3 as an arc surface, the contact between the guide rib 61 and the contact support 3 is a line contact, which further reduces the contact area between the guide rib 61 and the contact support 3. This further reduces the friction pair and friction force between the contact support 3 and the base 1, improves the smoothness of the movement of the contact support 3 when switching the state of the contactor, and further improves the movement efficiency of the contact support 3, thus ensuring the switching efficiency of the contactor.

[0081] Furthermore, since the guide rib 61 extends along the axial direction of the mounting hole 4, the contact line between the guide rib 61 and the contact support 3 also extends along the axial direction of the mounting hole 4, which provides a better guiding effect for the movement of the contact support 3.

[0082] refer to Figure 2 , Figure 6 and Figure 7 As shown, in some embodiments, there are at least two guide ribs 61, which are arranged at circumferential intervals along the mounting hole 4 and are distributed at least on opposite sides of the contact support 3.

[0083] By setting multiple guide ribs 61 between the mounting hole 4 and the contact support 3, and arranging the guide ribs 61 at intervals along the circumference of the mounting hole 4, the contact support 3 contacts the hole wall of the mounting hole 4 through the multiple guide ribs 61 when it moves. On the one hand, this reduces the contact area between the contact support 3 and the mounting hole 4 when the contact support 3 moves, thereby further reducing the friction pair between the contact support 3 and the mounting hole 4, making the movement efficiency of the contact support 3 higher, and facilitating the contactor to quickly connect or disconnect the circuit. On the other hand, the multiple guide ribs 61 all guide the movement of the contact support 3, enhancing the guiding effect on the movement of the contact support 3, and further ensuring the rapid switching of the contactor's operating state.

[0084] refer to Figure 6 and Figure 7 As shown, in some embodiments, a discharge groove 5 for removing impurities is formed between two adjacent guide ribs 61, and both ends of the discharge groove 5 are open along the axial direction of the mounting hole 4.

[0085] By forming a discharge groove 5 between two adjacent guide ribs 61, impurities generated during the movement of the contact support 3 can enter the discharge groove 5 and be discharged along the discharge groove 5, thus improving the convenience of impurity discharge.

[0086] Meanwhile, since the side of the guide rib 61 that contacts the contact support 3 is an arc-shaped surface, that is, the side of the guide rib 61 facing the discharge groove 5 is an arc-shaped surface. And since the arc-shaped surface protrudes towards the contact support 3, the arc-shaped surface of the guide rib 61 has a guiding effect on the impurities entering the discharge groove 5, which facilitates the rapid discharge of the generated impurities.

[0087] refer to Figure 6 and Figure 7 As shown, in some embodiments, the guide seat 6 is a guide ring, and the shape of the guide ring matches the shape of the mounting hole 4.

[0088] By setting the guide seat 6 as a guide ring, the structure is simple and easy to manufacture and assemble. Furthermore, matching the shape of the guide ring with the shape of the mounting hole 4 improves the fit between the guide ring and the mounting hole 4, which helps to enhance the connection strength of the guide seat 6 on the mounting hole 4, thereby providing a more stable guiding effect for the contact support 3.

[0089] For example, refer to Figure 2 , Figure 6 and Figure 7 As shown, the mounting hole 4 has a rectangular cross-section along its radial direction, and the guide seat 6 is a guide ring with a rectangular cross-section.

[0090] Of course, in other embodiments, the guide seat 6 may be a guide plate, for example. A guide plate is connected to each inner wall of the rectangular mounting hole 4.

[0091] refer to Figure 4 , Figure 9 and Figure 11 As shown, in some embodiments, a stationary contact 7 for contacting the moving contact 2 is provided on the base 1. The stationary contact 7 is located on the side of the mounting hole 4 facing the moving contact 2. When the guide seat 6 is fixed relative to the mounting hole 4, one end of the guide seat 6 abuts against the stationary contact 7, and the side of the mounting hole 4 away from the stationary contact 7 has a stop flange 41. The other end of the guide seat 6 abuts against the stop flange 41.

[0092] By providing a stop flange 41 on the side of the mounting hole 4 away from the stationary contact 7, the guide seat 6 is connected to the mounting hole 4. One end of the guide seat 6 abuts against the stationary contact 7, and the other end of the guide seat 6 abuts against the stop flange 41. In this way, the guide seat 6 is limited within the space formed by the stationary contact 7 and the stop flange 41. The stationary contact 7 and the stop flange 41 limit the guide seat 6, preventing the guide seat 6 from moving axially along the mounting hole 4, thus improving the structural stability of the guide seat 6 on the mounting hole 4. In this way, while satisfying the guiding function, the impact of friction on the contact support 3 is further reduced, making the movement of the contact smoother and more stable.

[0093] For example, refer to Figure 4and Figure 10 As shown, the top of the guide seat 6 abuts against the stationary contact 7, and the bottom of the guide seat 6 abuts against the stop flange 41 at the bottom of the mounting hole 4.

[0094] In some embodiments, reference Figures 6 to 8 As shown, a first limiting part 62 is provided on the guide seat 6. (Reference) Figure 10 As shown, a second limiting part 81 is provided on the mounting hole 4. The first limiting part 62 and the second limiting part 81 cooperate to at least circumferentially limit the guide seat 6.

[0095] By setting a first limiting part 62 on the guide seat 6 and a second limiting part 81 on the mounting hole 4, the cooperation of the first limiting part 62 and the second limiting part 81 plays a circumferential limiting role on the guide seat 6, preventing the guide seat 6 from moving circumferentially along the mounting hole 4, and further improving the structural stability of the guide seat 6 on the mounting hole 4. Thus, while satisfying the guiding function, it further reduces the impact of friction on the contact support 3, making the movement of the contact operation smoother and more stable.

[0096] For specific implementation, refer to Figure 6 and Figure 7 As shown, the guide seat 6 may be provided with multiple first limiting parts 62, which are spaced apart circumferentially along the mounting hole 4. Correspondingly, multiple second limiting parts 81 are provided on the wall of the mounting hole 4. One first limiting part 62 corresponds to one second limiting part 81. In this way, the cooperation of multiple sets of first limiting parts 62 and second limiting parts 81 provides a better limiting and fixing effect on the guide seat 6, further improving the structural stability of the guide seat 6.

[0097] For example, refer to Figure 7 As shown, the guide seat 6 is provided with two first limiting parts 62, which are respectively located on opposite sides of the guide seat 6. (Reference) Figure 2 As shown, two second limiting parts 81 are provided on the wall of the mounting hole 4, and the two second limiting parts 81 correspond to a first limiting part 62 respectively.

[0098] refer to Figure 6 , Figure 7 and Figure 10 As shown, in some embodiments, the first limiting part 62 includes a first limiting protrusion that extends axially along the mounting hole 4, and the second limiting part 81 includes a first limiting groove into which the first limiting protrusion can extend.

[0099] By setting a first limiting protrusion on the guide seat 6 and a first limiting groove on the wall of the mounting hole 4, both the first limiting protrusion and the first limiting groove extend along the axial direction of the mounting hole 4. The structure is simple, easy to manufacture, and has a good limiting effect on the guide seat 6.

[0100] Furthermore, since both the first limiting protrusion and the first limiting groove extend along the axial direction of the mounting hole 4, the cooperation between the first limiting protrusion and the first limiting groove also plays a role in pre-positioning and guiding the installation of the guide seat 6, thereby improving the assembly efficiency of the guide seat 6 and helping to improve the assembly efficiency of the contactor.

[0101] Meanwhile, since the first limiting protrusion and the first limiting groove are easy to disassemble, the base 1 and the guide seat 6 are detachable. If either the base 1 or the guide seat 6 is damaged and needs to be replaced, the base 1 and the guide seat 6 can be disassembled and the damaged one can be replaced. There is no need to replace the base 1 and the guide seat 6 as a whole, which saves replacement costs.

[0102] In practice, the first limiting protrusion is located on the side of the guide seat 6 facing the mounting hole 4. The first limiting protrusion and the guide rib 61 are located on opposite sides of the guide seat 6.

[0103] For example, refer to Figure 6 and Figure 7 As shown, the guide seat has a 6-position guide ring, with the first limiting protrusion disposed on the outer ring wall of the guide ring, and the guide rib 61 disposed on the inner ring wall of the guide ring.

[0104] In other embodiments, a first limiting groove may be provided on the side of the guide seat 6 away from the guide rib 61, and a first limiting protrusion may be provided on the wall of the mounting hole 4.

[0105] In some embodiments, a stationary contact 7 for contacting the moving contact 2 is provided on the base 1. (See reference) Figure 5 , Figure 10 and Figure 11 As shown, a third limiting part 82 is provided on the side of the base 1 opposite to the stationary contact 7. (Reference) Figure 5 , Figure 6 and Figure 8 As shown, a fourth limiting part 83 is provided on the guide seat 6. The third limiting part 82 and the fourth limiting part 83 cooperate to limit the guide seat 6.

[0106] By setting a third limiting part 82 on the base 1 and a fourth limiting part 83 on the guide seat 6, the cooperation of the third limiting part 82 and the fourth limiting part 83 further limits the circumferential movement of the guide seat 6, preventing the guide seat 6 from moving on the base 1 and further improving the structural stability of the guide seat 6 on the base 1. Thus, while satisfying the guiding function, the influence of friction on the contact support 3 is further reduced, making the movement of the contact smoother and more stable.

[0107] For specific implementation, refer to Figure 5 , Figure 8 and Figure 11As shown, the base 1 may be provided with multiple third limiting parts 82, which are spaced apart circumferentially along the mounting holes 4 on the base 1. Correspondingly, the guide seat 6 is provided with multiple fourth limiting parts 83. One third limiting part 82 corresponds to one fourth limiting part 83. In this way, the cooperation of multiple sets of third limiting parts 82 and fourth limiting parts 83 provides a better limiting and fixing effect on the guide seat 6, further improving the structural stability of the guide seat 6.

[0108] refer to Figure 6 , Figure 8 , Figure 10 and Figure 11 As shown, in some embodiments, the third limiting part 82 includes a second limiting groove, and the fourth limiting part 83 includes a second limiting protrusion that can extend into the second limiting groove.

[0109] By setting a second limiting groove on the base 1 and a second limiting protrusion on the wall of the mounting hole 4, the second limiting protrusion and the second limiting groove both extend along the axial direction of the mounting hole 4. The structure is simple, easy to manufacture, and has a good circumferential limiting effect on the guide seat 6.

[0110] In practice, the second limiting protrusion can be set on the side of the guide seat 6 away from the stationary contact 7, and the corresponding second limiting groove can be set on the stop flange 41 of the mounting hole 4.

[0111] In some implementations, refer to Figure 6 and Figure 8 As shown, the position of the second limiting protrusion can correspond to the position of the first limiting protrusion. In specific implementation, the second limiting protrusion can be formed by extending the first limiting protrusion in a direction away from the stationary contact 7. The two are integrally formed, which has good integrity and high structural strength.

[0112] Of course, in other implementations, the second limiting protrusion and the first limiting protrusion can also be offset circumferentially in the guide ring. Correspondingly, the second limiting groove and the first limiting groove are also offset circumferentially in the mounting hole 4.

Claims

1. A contactor, characterized in that, Includes the base and the contact support on which the moving contact is mounted; The base is provided with a mounting hole, and the contact is supported to pass through the mounting hole and can move along the axial direction of the mounting hole; A guide rib is provided between the mounting hole and the contact support. The guide rib extends axially along the mounting hole and is fixed relative to one of the mounting hole and the contact support. When the contact support moves axially along the mounting hole, the guide rib contacts the other of the mounting hole and the contact support to guide the movement of the contact support.

2. The contactor according to claim 1, characterized in that, In the protruding direction of the guide rib, the dimension of the guide rib decreases sequentially along the circumferential direction of the mounting hole.

3. The contactor according to claim 1, characterized in that, The side of the guide rib that contacts the other of the mounting hole and the contact support is an arc-shaped surface, and the arc-shaped surface protrudes toward the other of the mounting hole and the contact support.

4. The contactor according to claim 1, characterized in that, The guide ribs are at least two in number, and the at least two guide ribs are arranged at circumferential intervals along the mounting hole and are distributed at least on opposite sides of the contact support.

5. The contactor according to claim 4, characterized in that, A discharge groove for removing impurities is formed between two adjacent guide ribs, and both ends of the discharge groove are open along the axial direction of the mounting hole.

6. The contactor according to any one of claims 1 to 5, characterized in that, The contactor also includes an insulated guide seat; The guide seat is disposed between the mounting hole and the contact support, and is fixed relative to one of the mounting hole and the contact support; the guide rib is disposed on the guide seat.

7. The contactor according to claim 6, characterized in that, The guide seat is a guide ring, and the shape of the guide ring matches the shape of the mounting hole.

8. The contactor according to claim 6, characterized in that, The base is provided with a stationary contact for contacting the moving contact, and the stationary contact is located on the side of the mounting hole facing the moving contact; When the guide seat is fixed relative to the mounting hole, one end of the guide seat abuts against the stationary contact, the side of the mounting hole opposite to the stationary contact has a stop flange, and the other end of the guide seat abuts against the stop flange.

9. The contactor according to claim 6, characterized in that, The guide seat is provided with a first limiting part, and one of the mounting hole and the contact support is provided with a second limiting part. The first limiting part and the second limiting part cooperate to at least circumferentially limit the guide seat. The first limiting part includes a first limiting protrusion that extends axially along the mounting hole, and the second limiting part includes a first limiting groove into which the first limiting protrusion can extend.

10. The contactor according to claim 6, characterized in that, The base is provided with a stationary contact for contacting the moving contact. A third limiting part is provided on the side of the base away from the stationary contact. A fourth limiting part is provided on the guide seat. The third limiting part and the fourth limiting part cooperate to limit the guide seat. The third limiting part includes a second limiting groove, and the fourth limiting part includes a second limiting protrusion that can extend into the second limiting groove.

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