A contactor base, a contactor and a control circuit

Abstract

The application relates to a contactor base, a contactor and a control circuit, and relates to the technical field of contactors. The contactor base is used for fixing a static contact and an arc extinguishing piece, and comprises a base body and a limiting block. An installation cavity is formed in the base body, and the static contact is installed in the installation cavity. The limiting block is arranged on the side of the static contact and is fixed with the base body to limit the movement of the static contact. A reinforcing rib is arranged on the limiting block and is fixed with the base body. The arc extinguishing piece is provided with a clamping groove, and the reinforcing rib is clamped in the clamping groove. The contactor base provided by the application can improve the limiting strength of the static contact and simultaneously improve the limiting effect on the arc extinguishing structure.

Description

Technical Field

[0001] This application relates to the field of contactor technology, specifically to a contactor base, a contactor, and a control circuit. Background Technology

[0002] Contactors are commonly used electrical components, primarily for controlling the switching on and off of circuits. Structurally, a contactor typically consists of multiple modules, including a base, a contact system, and an arc-extinguishing system.

[0003] In existing technologies, during contactor assembly, the stationary contact and other structures are mounted on a base, and an arc-extinguishing system is installed around the stationary contact to extinguish the high-temperature arc generated during the opening and closing of the contact system. During the actual assembly and wiring of the stationary contact, it is usually fixed to the base using bolts or similar structures. However, to prevent the stationary contact from shifting or rotating due to wiring torque, a limiting structure is usually required to restrict its range of motion. However, existing limiting block structures are prone to breakage if excessive torque is applied during user wiring, which can affect the accurate positioning of the stationary contact and even lead to poor contact or electrical faults.

[0004] In addition, existing arc extinguishing systems are usually directly mounted in the base, but in actual use, the arc extinguishing system is prone to problems such as shaking. At the same time, under the action of frequent arc erosion, the arc extinguishing system is prone to deformation. The combination of these two factors makes the arc extinguishing effect of the arc extinguishing system prone to problems, which in turn affects the overall performance of the contactor.

[0005] Therefore, there is an urgent need to design a contactor base that can improve the limiting strength of the stationary contact and enhance the positioning effect of the arc extinguishing system. Utility Model Content

[0006] The purpose of this application is to provide a contactor base, contactor, and control circuit that can improve the limiting strength of the stationary contact and enhance the limiting effect of the arc extinguishing system.

[0007] To achieve the above objectives, in a first aspect, this application provides a contactor base for fixing a stationary contact and an arc-extinguishing element. The contactor base includes a base body and a limiting block. A mounting cavity is formed on the base body, and the stationary contact is mounted within the mounting cavity. The limiting block is disposed on the side of the stationary contact and fixed to the base body to restrict the movement of the stationary contact. A reinforcing rib extends from the limiting block and is fixed to the base body. A snap-fit ​​groove is provided on the arc-extinguishing element, and the reinforcing rib snaps into the snap-fit ​​groove.

[0008] Based on the embodiments described above, since a limiting block is provided on the side of the stationary contact and the limiting block is fixed to the base, during contactor assembly and wiring, even if the stationary contact is fixed to the mounting cavity by bolts or other means, the stationary contact may tend to rotate due to torque. The limiting block will then limit the rotation of the stationary contact, thereby reducing the possibility of the stationary contact rotating relative to the base. Furthermore, by extending reinforcing ribs on the limiting block and fixing the reinforcing ribs to the base, the strength of the limiting block itself and the connection strength between the limiting block and the base can be enhanced, thereby reducing the possibility of the limiting block breaking due to excessive torque.

[0009] Furthermore, based on the above-mentioned configuration, an arc-extinguishing component is also installed within the mounting cavity. This component helps extinguish the high-temperature arc generated when the stationary and moving contacts open, thereby protecting the stationary contacts and other structures. Simultaneously, a snap-fit ​​groove is provided on the arc-extinguishing component at the location of the reinforcing rib. This snap-fit ​​groove serves two purposes: firstly, it provides a clearance mechanism, facilitating the assembly of the arc-extinguishing component; secondly, the snap-fit ​​groove engages with the reinforcing rib to limit the arc-extinguishing component's movement, thus restricting its sway and reducing deformation when subjected to high-temperature arc erosion.

[0010] In this application, by setting reinforcing ribs on the limiting block, the strength of the limiting block is increased to reduce the possibility of the limiting block breaking due to excessive torque. On the other hand, in conjunction with the snap-fit ​​groove of the arc extinguishing component, the arc extinguishing component is positioned and fixed to limit the sway range of the arc extinguishing component and reduce its deformation under the action of high-temperature electric arc.

[0011] In some embodiments, the mounting cavity has an opening on one side along a first direction, and the arc-extinguishing element passes through the opening and is inserted into the mounting cavity along the first direction. A reinforcing rib extends along the first direction into the inner wall of the mounting cavity.

[0012] Based on the above embodiments of this application, the arc-extinguishing component is installed along the first direction, and the reinforcing rib also extends along the first direction. Therefore, during the installation of the arc-extinguishing component, the reinforcing rib can be directly snapped into the snap-fit ​​groove. This not only limits the arc-extinguishing component through the cooperation between the reinforcing rib and the snap-fit ​​groove, but also reduces the impact on the assembly process of the arc-extinguishing component, ensuring that the assembly process of the arc-extinguishing component is simple and convenient.

[0013] In some embodiments, the inner wall of the mounting cavity is provided with at least two limiting strips, which extend along a first direction and are disposed opposite to each other on both sides of the arc extinguishing member to abut against the arc extinguishing member.

[0014] Based on the embodiments described above, the limiting strip, by abutting against the arc-extinguishing component, provides a certain limiting effect on the arc-extinguishing component. Simultaneously, for ease of assembly, a certain distance should be provided between the limiting strip and the arc-extinguishing component. Furthermore, since the limiting strip extends along the first direction, and the arc-extinguishing component is also inserted into the mounting cavity along the first direction, the limiting effect of the limiting strip on the arc-extinguishing component is mainly concentrated in various directions perpendicular to the first direction, achieving initial limiting of the arc-extinguishing component. Subsequently, the cooperation of the reinforcing rib and the snap-fit ​​groove further limits and fixes the arc-extinguishing component, reducing its swaying and deformation under high-temperature electric arc.

[0015] In some embodiments, the limiting block and the reinforcing rib are integrally formed, and the reinforcing rib is integrally formed with the base.

[0016] Based on the embodiments described above, by integrating the limiting block and the reinforcing rib into one piece, and the reinforcing rib also being integrated into the base, the limiting block and the reinforcing rib are integrally formed with the base. This results in higher overall strength for the limiting block and the reinforcing rib, and better limiting effect for the stationary contact. Furthermore, this integrated structure facilitates integral processing via injection molding or other methods, improving processing efficiency while reducing production costs.

[0017] In some embodiments, at least two limiting blocks are provided inside the mounting cavity, and each limiting block is provided with a corresponding reinforcing rib. The arc extinguishing component is provided with at least two snap-fit ​​grooves, and the at least two snap-fit ​​grooves are respectively snapped into the at least two reinforcing ribs.

[0018] Based on the embodiments described above, the limiting effect on the stationary contact is improved by increasing the number of limiting blocks and reinforcing ribs. Simultaneously, the torque distributed among multiple limiting blocks reduces the torque on a single limiting block, further minimizing the possibility of damage. Furthermore, the increased number of limiting blocks and reinforcing ribs also corresponds to an increase in the number of locking grooves, further enhancing the limiting effect on the arc-extinguishing component.

[0019] In some embodiments, the mounting cavity includes a bottom wall, a first side wall, and a second side wall, with the first side wall and the second side wall positioned opposite each other. The stationary contact is fixed to the bottom wall by bolts, at least one limiting block is disposed on the first side wall, and at least another limiting block is disposed on the second side wall.

[0020] Based on the embodiments described above, the stationary contact is fixed to the base with bolts. Since the stationary contact needs to be rotated during fixing and subsequent wiring, a limiting block is provided to restrict the range of motion of the stationary contact. In specific use, at least two limiting blocks are respectively disposed on the side of the stationary contact and abut against the stationary contact to achieve limiting. The relative arrangement of the limiting blocks can further improve the limiting effect on the stationary contact.

[0021] In some embodiments, the dimension of the arc-extinguishing element along the first direction is L1, and the dimension of the reinforcing rib that is snapped into the snap-fit ​​groove along the first direction is L2, where L2≥0.2L1.

[0022] Based on the above embodiments of this application, by limiting the size of the reinforcing rib snapped into the snap-fit ​​groove, it is possible to avoid the reinforcing rib being unable to effectively limit the arc-extinguishing component due to an excessively small snap-fit ​​size. Furthermore, in practical use, the upper limit of the snap-fit ​​size can also be limited to prevent the arc-extinguishing component's strength and arc-extinguishing effect from being affected by an excessively large snap-fit ​​size, or to avoid assembly difficulties caused by an excessively large snap-fit ​​size.

[0023] According to a second aspect of this application, a contactor is provided, comprising a stationary contact and a moving contact, as well as the aforementioned arc-extinguishing element and contactor base. The arc-extinguishing element is disposed outside the stationary contact.

[0024] Based on the above embodiments of this application, the contactor provided in this application includes the aforementioned contactor base. In the contactor base, the reinforcement ribs enhance the strength of the limiting block, reducing the possibility of damage to the limiting block. Furthermore, the cooperation between the reinforcement ribs and the locking grooves limits the movement of the arc-extinguishing element, reducing its sway and deformation under high-temperature arc conditions. In other words, these features improve the reliability of the contactor base and the contactor as a whole, reduce the possibility of damage to components such as the limiting block within the contactor, ensure the reliable operation of the arc-extinguishing element, and extend the overall service life of the contactor base.

[0025] In some embodiments, the contactor includes three sets of stationary contacts and moving contacts, and each set of stationary contacts is provided with a limit block and an arc extinguishing element.

[0026] Based on the embodiments described above, the contactor is configured with three sets of stationary contacts and moving contacts to correspond to the three-phase structure of the contactor. Each set of stationary contacts is equipped with a limiting block and an arc-extinguishing element to achieve limiting and arc-extinguishing effects for each set of stationary contacts. Furthermore, the reliability of each stationary contact position is further improved by the addition of reinforcing ribs.

[0027] According to a third aspect of this application, a control circuit is provided, the control circuit including the contactor described above.

[0028] Based on the above embodiments of this application, the control circuit provided by this application includes the contactor described above, and therefore also has the above-mentioned beneficial effects. To avoid repetition, it will not be described again here.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the contactor base provided in an embodiment of this application.

[0031] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0032] Figure 3 This is a three-dimensional cross-sectional schematic diagram of the contactor base provided in the embodiments of this application.

[0033] Figure 4 yes Figure 3 Enlarged diagram of part B.

[0034] Explanation of reference numerals in the attached figures 1. Stationary contact; 2. Arc extinguishing element; 21. Snap-fit ​​groove; 3. Base; 31. Mounting cavity; 32. Limiting strip; 33. Contact mounting part; 4. Limiting block; 5. Reinforcing rib. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In existing technologies, during contactor assembly, the stationary contact and other structures are mounted on a base, and an arc-extinguishing system is installed around the stationary contact structure to extinguish the high-temperature arc generated during the opening and closing of the contact system. During the actual assembly and wiring of the stationary contact, it is usually fixed to the base using bolts or other structures. However, to prevent the stationary contact from shifting or rotating due to wiring torque during fixing, a limiting structure is usually required to restrict the range of motion of the stationary contact.

[0042] However, when using the existing limit structure, if too much torque is applied during the user's wiring process, the limit block is prone to breakage, which in turn affects the accurate positioning of the contacts and may even cause poor contact or electrical faults.

[0043] Furthermore, existing arc-extinguishing systems are typically directly mounted in the base. To facilitate assembly, a certain installation gap is usually required between the arc-extinguishing system and the base. This gap can cause the arc-extinguishing system to wobble during subsequent use. Simultaneously, under the frequent ablation of the electric arc, the arc-extinguishing system deforms, further affecting its arc-extinguishing effect and the overall performance of the contactor.

[0044] Therefore, there is an urgent need to design a contactor base that can improve the limiting strength of the stationary contact and enhance the positioning effect of the arc extinguishing system.

[0045] To address the aforementioned problems in the prior art, this application provides a contactor base for fixing the stationary contact 1 and the arc-extinguishing element 2, as shown in the reference. Figure 1 and Figure 2As shown, the contactor base includes a base body 3 and a limiting block 4. A mounting cavity 31 is formed on the base body 3, and the stationary contact 1 is mounted within the mounting cavity 31. The limiting block 4 is disposed on the side of the stationary contact 1 and fixed to the base body 3 to restrict the movement of the stationary contact 1. A reinforcing rib 5 extends from the limiting block 4 and is fixed to the base body 3. A snap-fit ​​groove 21 is provided on the arc-extinguishing component 2, and the reinforcing rib 5 snaps into the snap-fit ​​groove 21.

[0046] Based on the embodiments described above, since a limiting block 4 is provided on the side of the stationary contact 1 and the limiting block 4 is fixed to the base 3, when the contactor is assembled and wired, and the stationary contact 1 is fixed to the mounting cavity 31 by means of bolts or other methods, the stationary contact 1 will tend to rotate due to torque. The limiting block 4 will also provide a limiting function for the stationary contact 1, thereby reducing the possibility of the stationary contact 1 rotating relative to the base 3. Furthermore, by extending a reinforcing rib 5 on the limiting block 4 and fixing the reinforcing rib 5 to the base 3, the strength of the limiting block 4 itself and the connection strength between the limiting block 4 and the base 3 can be strengthened by providing the reinforcing rib 5, thereby reducing the possibility of the limiting block 4 breaking due to excessive torque.

[0047] Furthermore, based on the above-mentioned configuration, an arc-extinguishing component 2 is also provided within the mounting cavity 31. This component helps extinguish the high-temperature arc generated when the stationary contact 1 and the moving contact open and close, thereby protecting the stationary contact 1 and other structures. Simultaneously, a snap-fit ​​groove 21 is provided on the arc-extinguishing component 2 at the location of the reinforcing rib 5. The snap-fit ​​groove 21 serves two purposes: firstly, it provides a clearance mechanism, facilitating the assembly of the arc-extinguishing component 2; secondly, the snap-fit ​​between the groove 21 and the reinforcing rib 5 limits the movement of the arc-extinguishing component 2, thereby reducing its deformation when subjected to high-temperature arc erosion.

[0048] In summary, by setting reinforcing ribs 5 on the limiting block 4, the strength of the limiting block 4 is enhanced to reduce the possibility of damage to the limiting block 4 due to excessive torque. On the other hand, in conjunction with the snap-fit ​​groove 21 of the arc extinguishing component 2, the arc extinguishing component 2 is positioned and fixed to limit the sway range of the arc extinguishing component 2 and reduce its deformation under the action of high-temperature electric arc.

[0049] In the specific manufacturing process, the base 3 may include a plate-shaped main structure. Multiple cavity structures are formed on the main structure by partitions, and each cavity structure has an opening on the side facing away from the main structure for mounting and fixing various components inside the contactor. Some of these cavity structures can be used for mounting and fixing the stationary contact 1 and the arc-extinguishing element 2, i.e., the aforementioned mounting cavity 31. In practical use, the specific structural dimensions of each cavity structure, including the mounting cavity 31, can be set according to the dimensions of the stationary contact 1 and the arc-extinguishing element 2 to be installed; this application does not impose specific limitations in this regard.

[0050] refer to Figure 1 As shown, in some embodiments of this application, the mounting cavity 31 may have an opening on one side along the first direction, through which the arc-extinguishing member 2 passes and is inserted into the mounting cavity 31 along the first direction. The reinforcing rib 5 extends along the first direction into the inner wall of the mounting cavity 31.

[0051] It should be noted that the first direction mentioned above in this application corresponds to the opening direction of the cavity structure on the seat 3, that is, the direction perpendicular to the main structure of the seat 3.

[0052] Based on the above embodiments of this application, the arc-extinguishing component 2 is installed along the first direction, and the reinforcing rib 5 also extends along the first direction. Therefore, during the installation of the arc-extinguishing component 2, the reinforcing rib 5 can be directly snapped into the snap-fit ​​groove 21. This not only limits the arc-extinguishing component 2 through the cooperation between the reinforcing rib 5 and the snap-fit ​​groove 21, but also reduces the impact on the assembly process of the arc-extinguishing component 2, ensuring that the assembly process of the arc-extinguishing component 2 is simple and convenient.

[0053] Specifically, the arc-extinguishing element 2 in this application can be configured with any suitable structure. (See reference) Figure 1 and Figure 2 As shown in the exemplary embodiment provided in this application, the arc-extinguishing component 2 can be configured as a magnetic blowout arc-extinguishing structure, and the arc-extinguishing component 2 can be configured as a U-shaped plate structure, with the opening direction of the U-shaped plate structure perpendicular to the first direction. Simultaneously, a snap-fit ​​groove 21 is formed on the side wall of the U-shaped plate structure along the first direction. Subsequently, during assembly, the entire U-shaped plate structure is inserted into the mounting cavity 31 along the first direction, causing the reinforcing rib 5 to snap into the snap-fit ​​groove 21.

[0054] In practical use, the arc extinguishing component 2, which is set as a U-shaped plate structure, is entirely surrounded on the side of the stationary contact 1. When the stationary contact 1 and the moving contact open and close, a high-temperature electric arc is generated. The arc extinguishing component 2 generates a magnetic field and pulls and lengthens the electric arc, thereby quickly extinguishing the electric arc.

[0055] Meanwhile, in practical use, the arc-extinguishing component 2 can be configured with other structures based on different arc-extinguishing principles. For example, when the arc-extinguishing component 2 is configured as an arc-extinguishing grid, the entire arc-extinguishing component 2 is configured as multiple parallel metal plates. In this case, a snap-fit ​​groove 21 can also be provided at a corresponding position on the arc-extinguishing component 2 to limit the arc-extinguishing component 2 by snapping it with the reinforcing rib 5. That is, when the arc-extinguishing component 2 is configured with other structures, although the structure of the arc-extinguishing component 2 itself is different, the limiting of the arc-extinguishing component 2 can still be achieved by setting the snap-fit ​​groove 21 to cooperate with the reinforcing rib 5. The specific position and size of the snap-fit ​​groove 21 can be adjusted adaptively according to the actual situation.

[0056] In order to further ensure the limiting effect of the reinforcing rib 5 on the arc extinguishing component 2, in some embodiments of this application, the dimension of the arc extinguishing component 2 along the first direction is L1, and the dimension of the reinforcing rib 5 in the snap-fit ​​groove 21 along the first direction is L2. The relationship between the two can be set as L2≥0.2L1.

[0057] Based on the above embodiments of this application, by limiting the size of the reinforcing rib 5 snapping into the snap-fit ​​groove 21, it is possible to avoid the reinforcing rib 5 failing to effectively limit the arc-extinguishing component 2 due to an excessively small snap-fit ​​size. Furthermore, in practical use, the upper limit of the snap-fit ​​size can also be limited to prevent the arc-extinguishing component 2 from being affected by an excessively large snap-fit ​​size, or from causing assembly difficulties during the assembly of the arc-extinguishing component 2.

[0058] In practical use, the size of the reinforcing rib 5 that is snapped into the snap-fit ​​groove 21 can be set to 20%, 25% or 30% of the size of the arc-extinguishing component 2. The specific size can be set according to the actual assembly situation. This application does not impose any specific restrictions on this.

[0059] Furthermore, in this application, the fixing and limiting of the arc-extinguishing component 2 is not limited to the cooperation between the snap-fit ​​groove 21 and the reinforcing rib 5. (See reference) Figures 1 to 4 As shown in some embodiments of this application, the inner wall of the mounting cavity 31 may also be provided with at least two limiting strips 32, the limiting strips 32 extending along the first direction, and the two limiting strips 32 being disposed opposite to each other on both sides of the arc extinguishing member 2 to abut against the arc extinguishing member 2.

[0060] Based on the embodiments described above, the limiting strip 32, by abutting against the arc-extinguishing component 2, provides a certain limiting effect on the arc-extinguishing component 2. Simultaneously, for ease of assembly, a certain distance should be provided between the limiting strip 32 and the arc-extinguishing component 2. Furthermore, since the limiting strip 32 extends along the first direction, and the arc-extinguishing component 2 is also inserted into the mounting cavity 31 along the first direction, the limiting effect of the limiting strip 32 on the arc-extinguishing component 2 is mainly concentrated in various positions perpendicular to the first direction, achieving initial limiting of the arc-extinguishing component 2. Subsequently, the cooperation between the reinforcing rib 5 and the snap-fit ​​groove 21 further limits and fixes the arc-extinguishing component 2, reducing its shaking and deformation under high-temperature arc conditions.

[0061] Further reference Figure 1 As can be seen from the diagram, the arc-extinguishing component 2 is specifically configured as a U-shaped plate structure, and a rectangular mounting cavity 31 is formed on the base 1 by a partition. The arc-extinguishing component 2 is inserted into the mounting cavity 31 along the first direction, and the opening direction of the U-shaped arc-extinguishing component 2 is perpendicular to the first direction, so that the arc-extinguishing component 2 can surround the side of the stationary contact 1.

[0062] At this time, there are four limiting strips 32. The four limiting strips 32 are set at the four corners of the arc extinguishing component 2 along the first direction, that is, the direction of the edge of the arc extinguishing component 2, so as to limit and fix the arc extinguishing component 2 from the outside, thereby realizing the limiting of the arc extinguishing component 2.

[0063] In other embodiments of this application, the number and orientation of the limiting strips 32 can be set according to the specific structure and assembly method of the arc-extinguishing component 2. Alternatively, other limiting structures can be set to replace the limiting strips 32 to achieve limiting and fixing of the arc-extinguishing component 2. The specific settings can be made according to the actual situation, and this application does not impose specific restrictions on them.

[0064] The above description, in conjunction with specific embodiments, illustrates the structure and assembly of the limiting block 4, the reinforcing rib 5, and the arc-extinguishing component 2. In actual production and processing, to enhance the overall structural strength of the limiting block 4 and the reinforcing rib 5, the limiting block 4 and the reinforcing rib 5 can be integrally formed, and the reinforcing rib 5 can be integrally formed with the base 3.

[0065] Based on the embodiments described above, the limiting block 4 and the reinforcing rib 5 are integrally formed, and the reinforcing rib 5 is also integrally formed with the base 3, so that the limiting block 4 and the reinforcing rib 5 are integrally formed with the base 3. This results in higher overall strength for the limiting block 4 and the reinforcing rib 5, and better limiting effect for the stationary contact 1. At the same time, to reduce material costs and achieve insulation protection, the base can typically be made of lightweight insulating materials such as plastic. In this case, integrally forming the above structure also facilitates integral processing by injection molding or other methods, improving processing efficiency while reducing production costs.

[0066] refer to Figure 1 As shown in some embodiments of this application, at least two limiting blocks 4 may be provided in the mounting cavity 31, and each limiting block 4 is provided with a corresponding reinforcing rib 5. The arc extinguishing component 2 is provided with at least two snap-fit ​​grooves 21, and the at least two snap-fit ​​grooves 21 are respectively snap-fitted with at least two reinforcing ribs 5.

[0067] Based on the embodiments described above, by increasing the number of limiting blocks 4 and reinforcing ribs 5, the limiting effect on the stationary contact 1 is improved. Simultaneously, the torque on each limiting block 4 is reduced by the mutual distribution among multiple limiting blocks 4, further decreasing the possibility of damage to the limiting block 4. While increasing the number of limiting blocks 4 and reinforcing ribs 5, the number of locking grooves 21 is also increased, further improving the limiting effect on the arc-extinguishing component 2.

[0068] Specifically, the specific structure of the limit block 4 can be adapted to the structure of the stationary contact 1. Further reference... Figure 1 and Figure 2As can be seen from the above, the stationary contact 1 is configured as a frustum structure, and the limiting block 4 is located on the side of the stationary contact 1 and abuts against the stationary contact 1 to limit the stationary contact 1.

[0069] Furthermore, in some embodiments of this application, the mounting cavity 31 includes a bottom wall, a first side wall, and a second side wall, with the first side wall and the second side wall positioned opposite each other. The stationary contact 1 is fixed to the bottom wall by bolts, at least one limiting block 4 is disposed on the first side wall, and at least another limiting block 4 is disposed on the second side wall.

[0070] Based on the above embodiments of this application, the stationary contact 1 is fixed to the base 3 by bolts. Since the stationary contact 1 needs to be rotated during fixing and subsequent wiring, a limiting block 4 is provided to limit the range of motion of the stationary contact 1. In specific use, at least two limiting blocks 4 are respectively provided on the side of the stationary contact 1 and abut against the stationary contact 1 to achieve limiting. The relative arrangement of the limiting blocks 4 can further improve the limiting effect on the stationary contact 1.

[0071] Specifically, the mounting cavity 31 is formed by partitioning the main structure of the base 3 with a partition plate. The bottom wall of the mounting cavity 31 can be the main structure of the base 3. Meanwhile, to ensure the strength of the mounting position during the installation of the stationary contact 1, a contact mounting part 33 can be provided on the main structure of the base 3. The contact mounting part 33 can be a boss, which increases the thickness of the bottom of the mounting cavity 31. Subsequently, a bolt is threaded onto the boss along the first direction, and the stationary contact 1 is fixed to the end of the bolt for installation.

[0072] Meanwhile, the first and second sidewalls can correspond to the plate surface of the partition. The limiting block 4 can be directly installed on the plate surface of the partition. Alternatively, the limiting block 4 can be installed at the junction of the partition and the main structure of the seat 3, that is, at the junction of the bottom wall of the mounting cavity 31 and the first or second sidewall. In this case, the contact area between the limiting block 4 and the seat 3 can be increased, thereby further increasing the strength of the limiting block 4.

[0073] In practical use, the number of limit blocks 4 can be set to two, three, four, or any number, depending on the required number of lines. During arrangement, multiple limit blocks 4 can be arranged according to the shape of the stationary contact 1. For example, if the stationary contact 1 is set as a frustum structure and three limit blocks 4 are used, the three limit blocks 4 can be arranged along the axial direction of the frustum structure on the outside of the stationary contact 1.

[0074] Based on the above technical solution, this application also provides a contactor, which includes a stationary contact and a moving contact, as well as the aforementioned arc-extinguishing element 2 and a contactor base. The arc-extinguishing element 2 is disposed on the outside of the stationary contact 1.

[0075] Based on the above embodiments of this application, the contactor provided in this application includes the aforementioned contactor base. In the contactor base, the reinforcing rib 5 strengthens the limit block 4, reducing the possibility of damage to the limit block 4. Furthermore, the cooperation between the reinforcing rib 5 and the locking groove 21 limits the arc-extinguishing element 2, reducing its sway and deformation under high-temperature arc conditions. In other words, the above-mentioned design improves the reliability of the contactor base and the contactor as a whole, reduces the possibility of damage to components such as the limit block 4 within the contactor, ensures the reliable operation of the arc-extinguishing element 2, and extends the overall service life of the contactor base.

[0076] Furthermore, it should be noted that the above only discloses the specific assembly and fitting methods of the contactor base and arc-extinguishing component 2 within the contactor. In practical applications, the contactor is not limited to the above structures. For example, the contactor may also include a triggering system, typically configured with a moving iron core and a stationary iron core, used to drive the moving contact to achieve opening and closing. As another example, in addition to the contactor base, the contactor may also include a middle cover, which typically snaps onto the contactor base to form the contactor's cavity structure. The specific configuration can be tailored to the actual application. Since this application does not involve improvements to the above-mentioned parts, they will not be elaborated upon here.

[0077] Furthermore, the specific structure and triggering method of the moving contact in this application can be selected as appropriate as needed. For example, the aforementioned electromagnetic triggering method or pneumatic triggering method can be selected. Additionally, the specific structure of the moving contact can be adaptively configured according to different triggering methods.

[0078] refer to Figures 1 to 4 As shown in some embodiments of this application, the contactor may include three sets of stationary contacts 1 and moving contacts, and each set of stationary contacts 1 is provided with a limit block 4 and an arc extinguishing element 2.

[0079] Based on the above embodiments of this application, the contactor is configured with three sets of stationary contacts 1 and moving contacts to correspond to the three-phase structure of the contactor. Each set of stationary contacts 1 is equipped with a limiting block 4 and an arc-extinguishing element 2 to achieve limiting and arc-extinguishing effects on the stationary contacts 1. Furthermore, the reliability of each stationary contact 1 position is further improved by the addition of reinforcing ribs 5.

[0080] Specifically, by setting the reinforcing rib 5, this application simultaneously improves the strength of the limiting block 4 and limits the swaying and deformation of the arc-extinguishing element 2. In practice, each stationary contact 1 requires a corresponding arc-extinguishing element 2 to cope with the high-temperature arc generated during the opening and closing process. At this time, each stationary contact 1 also has the aforementioned limiting block 4 and reinforcing rib 5, etc., to achieve the above-mentioned technical effects. Furthermore, in actual use, the number of stationary contacts 1 and corresponding moving contacts can be set according to the actual situation; this application does not impose specific limitations on this.

[0081] Based on the above technical solutions, this application also provides a control circuit, which includes the contactor described above.

[0082] Based on the above embodiments of this application, the control circuit provided by this application includes the contactor described above, and therefore also has the above-mentioned beneficial effects. To avoid repetition, it will not be described again here.

[0083] It should be noted that the control circuit disclosed in this application includes the aforementioned contactor. This control circuit can utilize the contactor to achieve various control methods, such as circuit on / off control and current magnitude control. The specific control methods and wiring methods of the aforementioned control circuit can be configured according to actual application scenarios, and this application does not impose specific limitations in this regard.

[0084] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0085] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0086] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

Claims

1. A contactor base for fixing a stationary contact and an arc-extinguishing element, characterized in that, The contactor base includes: A base body, wherein a mounting cavity is provided on the base body, and the stationary contact is installed in the mounting cavity; A limiting block is located on the side of the stationary contact and fixed to the seat to restrict the movement of the stationary contact; The limiting block is provided with a reinforcing rib extending from it, and the reinforcing rib is fixed to the base body; The arc-extinguishing component is provided with a snap-fit ​​groove, and the reinforcing rib is snapped into the snap-fit ​​groove.

2. The contactor base according to claim 1, characterized in that, The mounting cavity has an opening on one side along the first direction, and the arc-extinguishing component passes through the opening and is inserted into the mounting cavity along the first direction; The reinforcing rib extends along the first direction into the inner wall of the mounting cavity.

3. The contactor base according to claim 2, characterized in that, The inner wall of the mounting cavity is provided with at least two limiting strips, which extend along the first direction and are disposed opposite to each other on both sides of the arc extinguishing component to abut against the arc extinguishing component.

4. The contactor base according to any one of claims 1-3, characterized in that, The limiting block and the reinforcing rib are integrally formed, and the reinforcing rib is integrally formed with the base.

5. The contactor base according to claim 4, characterized in that, At least two limiting blocks are provided inside the mounting cavity, and each limiting block is provided with a corresponding reinforcing rib; The arc-extinguishing component is provided with at least two snap-fit ​​grooves, and the at least two snap-fit ​​grooves are respectively snapped into at least two reinforcing ribs.

6. The contactor base according to claim 5, characterized in that, The mounting cavity includes a bottom wall, a first side wall, and a second side wall, with the first side wall and the second side wall positioned opposite to each other. The stationary contact is fixed to the bottom wall by bolts, at least one of the limiting blocks is disposed on the first side wall, and at least another limiting block is disposed on the second side wall.

7. The contactor base according to claim 4, characterized in that, The arc-extinguishing component has a dimension of L1 along the first direction, and the reinforcing rib has a dimension of L2 that is snapped into the snap-fit ​​groove along the first direction, where L2 ≥ 0.2L1.

8. A contactor, characterized in that, The contactor includes: Stationary contact and moving contact; and, The contactor base and arc-extinguishing element as described in any one of claims 1-7, wherein the arc-extinguishing element is disposed on the outside of the stationary contact.

9. The contactor according to claim 8, characterized in that, The contactor includes three sets of stationary contacts and moving contacts, and each set of stationary contacts is provided with a limiting block and an arc extinguishing element.

10. A control circuit, characterized in that, The control circuit includes the contactor as described in claim 8 or 9.

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