Contact mechanism and contactor
By designing appropriate gaps and material matching in the contact mechanism of the contactor, the friction and deflection problems between the moving contact and the contact support are solved, and the service performance of the contactor is improved.
Patent Information
- Application Number
- CN202422101384.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-28
AI Technical Summary
In existing contactors, friction and deflection may occur between the moving contact and the contact support, resulting in unreliable contact, affecting the performance of the contactor.
A contact mechanism is designed, including a movable contact, a mount, an elastic member and a contact support, by providing a first gap between the movable contact and the contact support, a second gap between the mount and the contact support, and setting the material of the mount to the same as the material of the contact support to reduce friction and wear.
It effectively reduces the possibility of friction between the movable contact and the contact support and wear of the moving contact, reduces the risk of the movable contact deflection, thereby improving the contact reliability of the movable contact and the static contact and the use performance of the contactor.
Smart Images
Figure CN222966015U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical equipment, and particularly to a contact mechanism and a contactor. Background Art
[0002] A contactor is an automatic electromagnetic switch, which is widely used in the opening and closing and control circuits of electric power. The contactor includes a contact mechanism and an electromagnetic mechanism. The contact mechanism includes a moving contact, a static contact, a contact support, etc. The moving contact is supported by the contact support. The electromagnetic mechanism can generate an electromagnetic force, and drive the contact support to move through the electromagnetic force, and then drive the moving contact to move through the contact support, so that the moving contact contacts or separates from the static contact, thereby turning on or off the current in the loop where the contactor is located.
[0003] However, in the related art, the moving contact supported by the contact support may be deflected, resulting in the inability of the moving contact to reliably contact the static contact, affecting the use performance of the contactor. Summary of the Utility Model
[0004] The present application provides a contact mechanism and a contactor, which can reduce the possibility of friction between the moving contact and the contact support and wear of the moving contact, thereby reducing the possibility that the moving contact is deflected and cannot reliably contact the static contact.
[0005] In a first aspect, the present application provides a contact mechanism, which includes a contact support, a moving contact, a mounting seat and an elastic member. The contact support is provided with a mounting cavity. In the moving direction of the contact support, the mounting cavity includes a first cavity wall and a second cavity wall which are opposite in position. The moving contact is partially located in the mounting cavity and is supported by the first cavity wall. The mounting seat is partially located in the mounting cavity, and one side of the mounting seat facing the first cavity wall abuts against the moving contact. The elastic member is located between the mounting seat and the second cavity wall. The first end of the elastic member abuts against one side of the mounting seat facing the second cavity wall, and the second end of the elastic member abuts against the second cavity wall. Wherein, there is a first gap between the moving contact and the contact support, and there is a second gap between the mounting seat and the contact support. The first gap is greater than the second gap, and the material of the mounting seat is the same as that of the contact support.
[0006] By providing a first gap between the moving contact and the contact support, a second gap between the mounting seat and the contact support, and setting the first gap to be greater than the second gap. In this way, it is not only convenient for the moving contact and the mounting seat to be installed on the contact support, but also makes the possibility of friction between the moving contact and the contact support less than the possibility of friction between the mounting seat and the contact support when the moving contact and the mounting seat move with the contact support. In this way, the possibility of friction between the moving contact and the contact support and wear of the moving contact can be effectively reduced.
[0007] In addition, the material of the mounting base is set to be the same as that of the contact support. When the mounting base moves relative to the contact support, even if the contactor shakes, or the contactor undergoes frequent electrical life and mechanical life tests, causing friction between the mounting base and the contact support, it is the friction between two structural members of the same material. Since the wear degree is relatively small when two structural members of the same material rub against each other, such a setting can effectively reduce the wear degree of the mounting base and the contact support when they rub against each other. Since the moving contact abuts against the mounting base, the moving contact is not likely to move relative to the contact support. In this way, the possibility of the moving contact supported by the contact support skewing can be effectively reduced, thereby improving the reliability of the contact between the moving contact and the static contact and enhancing the service performance of the contactor.
[0008] In a possible design, in the extending direction of the moving contact, the mounting base includes a first shoulder and a second shoulder that are opposite in position, and the contact support includes a first limiting portion and a second limiting portion that are opposite in position. The distance between the first shoulder and the second shoulder is greater than the distance between the first limiting portion and the second limiting portion, and a second gap is formed between the first shoulder and the first limiting portion, and between the second shoulder and the second limiting portion.
[0009] By providing the first shoulder and the second shoulder, the movement of the mounting base in the extending direction of the moving contact can be restricted through the cooperation between the first shoulder and the first limiting portion, and through the cooperation between the second shoulder and the second limiting portion. In addition, a second gap is formed between the first shoulder and the first limiting portion, and a second gap is formed between the second shoulder and the second limiting portion, which not only facilitates the installation of the mounting base on the contact support, but also avoids the first shoulder and the second shoulder of the mounting base in the extending direction of the moving contact rubbing against the contact support every time the mounting base moves relative to the contact support, reducing the possibility of wear of the mounting base and the contact support.
[0010] In a possible design, in the extending direction of the moving contact, the moving contact includes a third shoulder and a fourth shoulder that are opposite in position. The distance between the third shoulder and the fourth shoulder is greater than the distance between the first shoulder and the second shoulder, and a first gap is formed between the third shoulder and the first limiting portion, and between the fourth shoulder and the second limiting portion.
[0011] By providing the third shoulder and the fourth shoulder, the cooperation between the third shoulder and the first limiting portion, and the cooperation between the second shoulder and the second limiting portion can restrict the movement of the mounting base in the extending direction of the moving contact, thereby restricting the movement of the moving contact in the extending direction of the moving contact. The movement of the moving contact in the extending direction of the moving contact can also be restricted by the cooperation between the third shoulder and the first limiting portion, and the cooperation between the fourth shoulder and the second limiting portion. In this way, double limiting can be performed on the moving contact in the extending direction of the moving contact, effectively reducing the possibility of the moving contact moving relative to the contact support in the extending direction of the moving contact.
[0012] In addition, a first gap is formed between the third shoulder and the first limiting portion, and a first gap is formed between the fourth shoulder and the second limiting portion. This can not only facilitate the installation of the moving contact on the contact support, but also prevent friction between the moving contact and the contact support when the moving contact moves relative to the contact support.
[0013] In a possible design, the second gap between the first shoulder and the first limiting portion is equal to the second gap between the second shoulder and the second limiting portion. And / or, the first gap between the third shoulder and the first limiting portion is equal to the first gap between the fourth shoulder and the second limiting portion.
[0014] By setting the second gap between the first shoulder and the first limiting portion to be equal to the second gap between the second shoulder and the second limiting portion, the possibility of friction between the first shoulder and the first limiting portion can be made equivalent to the possibility of friction between the second shoulder and the second limiting portion. In this way, even if there is wear, the wear degree of the first shoulder and the first limiting portion is basically equivalent to the wear degree of the second shoulder and the second limiting portion, which can reduce the possibility of subsequent skew of the mounting base.
[0015] Similarly, by setting the first gap between the third shoulder and the first limiting portion to be equal to the first gap between the fourth shoulder and the second limiting portion, the possibility of friction between the third shoulder and the first limiting portion can be made equivalent to the possibility of friction between the fourth shoulder and the second limiting portion. In this way, even if there is wear, the wear degree of the third shoulder and the first limiting portion is basically equivalent to the wear degree of the fourth shoulder and the second limiting portion, which can reduce the possibility of subsequent skew of the moving contact.
[0016] In a possible design, the installation cavity further includes opposite third cavity wall and fourth cavity wall, and both the third cavity wall and the fourth cavity wall are connected to the first cavity wall and the second cavity wall. In the arrangement direction of the third cavity wall and the fourth cavity wall, the mounting base includes opposite first limiting surface and second limiting surface, the distance between the first limiting surface and the second limiting surface is less than the distance between the third cavity wall and the fourth cavity wall, and a second gap is formed between the first limiting surface and the third cavity wall, and between the second limiting surface and the fourth cavity wall.
[0017] Through the above solution, it is not only convenient for the mounting base to be mounted on the contact support, but also can avoid friction between both sides of the mounting base in the arrangement direction of the third cavity wall and the fourth cavity wall and the contact support when the mounting base moves relative to the contact support each time, reducing the possibility of wear between the mounting base and the contact support.
[0018] In a possible design, in the arrangement direction of the third cavity wall and the fourth cavity wall, the moving contact includes a first side surface and a second side surface with opposite positions. The distance between the first side surface and the second side surface is less than the distance between the first limiting surface and the second limiting surface, and a second gap is formed between the first side surface and the third cavity wall, and between the second side surface and the fourth cavity wall.
[0019] Through the above solution, it is not only convenient for the moving contact to be mounted on the contact support, but also can avoid friction between both sides of the moving contact in the arrangement direction of the third cavity wall and the fourth cavity wall and the contact support when the moving contact moves relative to the contact support.
[0020] In a possible design, a first limiting structure is provided on one side of the moving contact facing the mounting base, and a second limiting structure is provided on one side of the mounting base facing the moving contact. The first limiting structure and the second limiting structure cooperate with each other to fix the relative position between the moving contact and the mounting base.
[0021] Through the cooperation of the first limiting structure and the second limiting structure, the relative position between the moving contact and the mounting base is relatively fixed. In this way, the moving contact and the mounting base restrain each other, and it is not easy for the two to move relative to each other, which is also convenient for improving the position stability of the two relative to the contact support in the plane perpendicular to the moving direction of the contact support.
[0022] In a possible design, the contact mechanism further includes a moving contact point, and the moving contact point is arranged on the side of the moving contact facing away from the mounting base. The first limiting structure is formed by stamping on the moving contact along the moving direction of the contact support, and the first limiting structure is a groove on the side of the moving contact facing the mounting base; correspondingly, the second limiting structure is a protrusion corresponding to the groove. When the groove is formed by stamping on the moving contact, a convex column corresponding to the groove is formed on the side of the moving contact facing away from the mounting base, and the moving contact point is in contact with the convex column, and the convex column is used to position the moving contact point.
[0023] When the first limiting structure is formed by stamping on the moving contact and the first limiting structure is a groove, on the one hand, the groove can cooperate with the protrusion on the mounting base to fix the relative position between the moving contact and the mounting base. On the other hand, a convex column corresponding to the groove can be formed on the side of the moving contact facing away from the mounting base, and the convex column can position the moving contact point, so as to improve the accuracy of the setting position of the moving contact point, thereby facilitating the improvement of the reliability of the contact between the moving contact and the static contact.
[0024] In a possible design, a limiting groove is provided on one side of the mounting base facing the second cavity wall, and the first end of the elastic member is located in the limiting groove and abuts against the bottom of the limiting groove.
[0025] Through the above solution, the first end of the elastic member can abut against the bottom of the limiting groove. In this way, it is convenient to make the mounting base and the moving contact abut tightly under the pre-tightening force of the elastic member, and the moving contact can abut tightly against the first cavity wall. In addition, the side wall of the elastic member near its first end can abut against the wall of the limiting groove. In this way, the first end of the elastic member can be limited by the wall of the limiting groove, reducing the possibility of skewing of the first end of the elastic member.
[0026] In a second aspect, the present application provides a contactor, including the contact mechanism in the first aspect.
[0027] For the contactor provided in the above second aspect and each possible design of the above second aspect, the beneficial effects can refer to the beneficial effects brought by the above first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. Description of the Drawings
[0028] Figure 1 It is a schematic structural diagram of a contact mechanism provided by an embodiment of the present application from a perspective.
[0029] Figure 2 It is a schematic structural diagram of a contact support provided by an embodiment of the present application from a perspective.
[0030] Figure 3 It is a schematic structural diagram of a contact support provided by an embodiment of the present application from another perspective.
[0031] Figure 4 It is a schematic structural diagram of a contact mechanism provided by an embodiment of the present application from another perspective.
[0032] Figure 5 It is Figure 4 A cross-sectional view along the A-A section.
[0033] Figure 6 It is Figure 5 An enlarged view of part B in
[0034] Figure 7 It is a schematic structural diagram of a contact mechanism provided by an embodiment of the present application from yet another perspective.
[0035] Figure 8 It is Figure 7 An enlarged view of part C in
[0036] Figure 9 It is a schematic structural diagram of a mounting base provided by an embodiment of the present application from a perspective.
[0037] Figure 10 This is a schematic structural diagram of a moving contact from a perspective provided by an embodiment of the present application.
[0038] Figure 11 This is a schematic structural diagram of a mounting base from another perspective provided by an embodiment of the present application.
[0039] Figure 12 This is a schematic structural diagram of a combination of a moving contact and a moving contact from another perspective provided by an embodiment of the present application.
[0040] Explanation of reference numerals:
[0041] 100, contact mechanism;
[0042] 110, moving contact; 111, moving contact point; 112, third shoulder; 113, fourth shoulder; 114, first side; 115, second side; 116, first limiting structure; 117, convex post;
[0043] 120, static contact;
[0044] 130, contact support; 131, mounting cavity; 1311, first cavity wall; 1312, second cavity wall; 1313, third cavity wall; 1314, fourth cavity wall; 132, first limiting part; 133, second limiting part;
[0045] 140, mounting base; 141, first shoulder; 142, second shoulder; 143, first limiting surface; 144, second limiting surface; 145, second limiting structure; 146, limiting groove;
[0046] 150, elastic member;
[0047] J1, first gap; J2, second gap;
[0048] OX, moving direction of the contact support; OY, arrangement direction of multiple mounting cavities; OZ, extending direction of the moving contact. Detailed implementation manners
[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.
[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the description of the application herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the drawings are intended to cover non-exclusive inclusion.
[0051] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various places in the specification is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0052] The term "and / or" herein is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, the character " / " herein generally represents an "or" relationship between the associated objects before and after.
[0053] The directional terms appearing in the following description are all the directions shown in the figures and do not specifically limit the structure of the current limiting module 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", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.
[0054] In addition, the terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order, and may explicitly or implicitly include one or more of such features.
[0055] In the description of this application, unless otherwise specified, "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups).
[0056] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts, or other spacers; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0057] A contactor is an electrical device used to control the connection and disconnection of high-power circuits and is widely used in various electrical devices and systems.
[0058] During the movement of the contact support of the contactor, relative movement will occur between the contact support and the moving contact. Due to the existence of this relative movement, friction may occur between the moving contact and the contact support, resulting in wear of the moving contact and / or the contact support. Once the moving contact and / or the contact support is worn, the position of the moving contact on the contact support may change. For example, the moving contact may be deflected relative to the contact support.
[0059] In the case where the position of the moving contact changes, the moving contact and the static contact will be misaligned. In this way, the moving contact cannot reliably contact the static contact, affecting the performance of the contactor.
[0060] Especially in the related art, the moving contact is generally made of a metal material, while the contact support is generally made of a plastic material. That is to say, the materials of the moving contact and the contact support are different. Since the thermal expansion coefficients of the metal material and the plastic material are different, and the wear between two structural members with different thermal expansion coefficients is greater than the wear between two structural members with the same thermal expansion coefficient, once the moving contact and / or the contact support expands due to heat, the moving contact and / or the contact support will have a greater degree of wear, which greatly affects the reliable contact between the moving contact and the static contact.
[0061] In view of this, the present application provides a contact mechanism and a contactor to reduce the possibility of wear between the moving contact and the contact support.
[0062] Figure 1 FIG. is a schematic structural view of a contact mechanism provided in an embodiment of the present application from a perspective. The present application provides a contactor, and the contactor includes a contact mechanism 100 as Figure 1 shown.
[0063] As introduced in the background, the contactor mainly includes a contact mechanism 100 and an electromagnetic mechanism. The electromagnetic mechanism and the contact mechanism 100 cooperate with each other to realize the contact or separation of the moving contact 110 and the static contact 120 in the contact mechanism 100. The working principle of the contactor can refer to the related art and will not be elaborated here in detail.
[0064] The contact mechanism 100 in the present application will be introduced in detail below with reference to the drawings.
[0065] Figure 2 FIG. is a schematic structural view of a contact support according to an embodiment of the present application from one perspective. Figure 3 FIG. is a schematic structural view of a contact support according to an embodiment of the present application from another perspective. Combining Figures 1 to 3 the contact mechanism 100 provided by the embodiment of the present application includes a contact support 130, a moving contact 110, a mounting seat 140, and an elastic member 150.
[0066] The contact support 130 is provided with a mounting cavity 131. In the moving direction OX of the contact support, the mounting cavity 131 includes a first cavity wall 1311 and a second cavity wall 1312 that are opposite in position. The moving contact 110 is partially located in the mounting cavity 131 and is supported by the first cavity wall 1311. The mounting seat 140 is partially located in the mounting cavity 131, and the side of the mounting seat 140 facing the first cavity wall 1311 abuts against the moving contact 110. The elastic member 150 is located between the mounting seat 140 and the second cavity wall 1312. The first end of the elastic member 150 abuts against the side of the mounting seat 140 facing the second cavity wall 1312, and the second end of the elastic member 150 abuts against the second cavity wall 1312.
[0067] The moving contact 110 is generally in the shape of a long strip. In the extending direction OZ of the moving contact, the moving contact 110 includes a first end and a second end that are opposite in position. Both the first end and the second end are provided with moving contacts 111. The portion between the first end and the second end of the moving contact 110 is located in the mounting cavity 131, and both the first end and the second end are exposed outside the mounting cavity 131 so that when the moving contact 110 moves with the contact support 130, the moving contacts 111 provided on the first end and the second end can contact or separate from the static contacts with fixed positions.
[0068] The material of the contact support 130 can be plastic. The mounting cavity 131 can be a through groove provided in the contact support 130 along the extending direction OZ of the moving contact. For a contactor with multiple contact systems, the contact support 130 can be provided with multiple mounting cavities 131. The structure of each mounting cavity 131 is the same, and each mounting cavity 131 supports a moving contact 110.
[0069] As Figure 2 and Figure 3As shown, the installation cavity 131 has a cuboid structure. The first cavity wall 1311 and the second cavity wall 1312 are two cavity walls of the installation cavity 131 in the moving direction OX of the contact support. Among them, the first cavity wall 1311 is closer to the aforementioned electromagnetic mechanism than the second cavity wall 1312.
[0070] The mounting base 140 can be a plate-like structure. Two ends of the mounting base 140 in the extending direction OZ of the moving contact can be exposed outside the installation cavity 131. Limiting structures can be provided on the parts exposed outside the installation cavity 131. These limiting structures can cooperate with the contact support 130 to limit the movement of the mounting base 140 in the extending direction OZ of the moving contact. The part between these two ends can be located inside the installation cavity 131 to limit the movement of the mounting base 140 in the arrangement direction OY of multiple installation cavities. Among them, the arrangement direction OY of multiple installation cavities, the moving direction OX of the contact support, and the extending direction OZ of the moving contact are perpendicular to each other.
[0071] The elastic member 150 can be a spring. In the moving direction OX of the contact support, the second cavity wall 1312, the elastic member 150, the mounting base 140, the moving contact 110, and the first cavity wall 1311 are arranged in sequence. The elastic member 150 can have a certain pre-tightening force, so that when the moving contact 110, the mounting base 140, and the elastic member 150 are installed on the contact support 130, the pre-tightening force of the elastic member 150 can make the mounting base 140 and the moving contact 110 abut tightly, and make the moving contact 110 abut tightly against the first cavity wall 1311. In this way, the mounting base 140 and the moving contact 110 can be regarded as a whole and move together with the movement of the contact support 130.
[0072] Figure 4 It is a schematic structural diagram of a contact mechanism provided by an embodiment of the present application from another perspective. Figure 5 is Figure 4 a cross-sectional view along the A-A section. Figure 6 is Figure 5 an enlarged view of part B in Figure 7 It is a schematic structural diagram of a contact mechanism provided by an embodiment of the present application from another perspective. Figure 8 is Figure 7 an enlarged view of part C in Figures 4 to 8 As shown, there is a first gap J1 between the moving contact 110 and the contact support 130, and a second gap J2 between the mounting base 140 and the contact support 130. The first gap J1 is larger than the second gap J2, and the material of the mounting base 140 is the same as that of the contact support 130.
[0073] Whether in the arrangement direction OY of multiple mounting cavities or in the extending direction OZ of the moving contact, there may be a first gap J1 between the moving contact 110 and the contact support 130. Similarly, whether in the arrangement direction OY of multiple mounting cavities or in the extending direction OZ of the moving contact, there may be a second gap J2 between the mounting base 140 and the contact support 130.
[0074] Among them, leaving a first gap J1 between the moving contact 110 and the contact support 130 facilitates the installation of the moving contact 110 onto the contact support 130. Similarly, leaving a second gap J2 between the mounting base 140 and the contact support 130 facilitates the installation of the mounting base 140 onto the contact support 130.
[0075] Furthermore, in this application, the first gap J1 is set to be larger than the second gap J2. When the moving contact 110 and the mounting base 140 move along with the contact support 130, if there is any wobbling, it is the mounting base 140 and the contact support 130 that may rub against each other, and the moving contact 110 and the contact support 130 will not come into contact or rub against each other. Therefore, the possibility of the moving contact 110 being worn due to friction with the contact support 130 can be effectively reduced.
[0076] The first gap J1 and the second gap J2 can be set according to the requirements of the assembly gap, and the first gap J1 can be set with reference to the second gap J2. Exemplarily, the second gap J2 can be 0.2 millimeters, and the first gap J1 can be 0.4 millimeters. Of course, the first gap J1 and the second gap J2 can also be other values, and the embodiments of this application do not limit this.
[0077] In addition, in this application, the material of the mounting base 140 is set to be the same as the material of the contact support 130. Based on the foregoing description, the material of the contact support 130 can be plastic, so the material of the mounting base 140 can also be plastic. In this way, when the mounting base 140 moves relative to the contact support 130, even if there is friction between the mounting base 140 and the contact support 130, it is the friction between two structural members of the same material.
[0078] Since the friction between two structural members of the same material results in less wear compared to the friction between two structural members of different materials, setting the material of the mounting base 140 to be the same as the material of the contact support 130 can effectively reduce the wear of the mounting base 140 and the contact support 130 when they rub against each other.
[0079] In summary, in the present application, the moving contact 110 is supported on the first cavity wall 1311. The side of the mounting seat 140 facing the first cavity wall 1311 abuts against the moving contact 110. The side of the mounting seat 140 facing the second cavity wall 1312 abuts against the first end of the elastic member 150. The second end of the elastic member 150 abuts against the second cavity wall 1312. Under the action of the elastic member 150, the mounting seat 140 and the moving contact 110 can be abutted tightly, and the moving contact 110 can be abutted tightly against the first cavity wall 1311. In this way, the mounting seat 140 and the moving contact 110 can be regarded as a whole and move together with the movement of the contact support 130.
[0080] In addition, a first gap J1 is provided between the moving contact 110 and the contact support 130, and a second gap J2 is provided between the mounting seat 140 and the contact support 130, and the first gap J1 is set to be larger than the second gap J2. In this way, it is not only convenient for the moving contact 110 and the mounting seat 140 to be installed on the contact support 130, but also when the moving contact 110 and the mounting seat 140 move with the contact support 130, the possibility of friction between the moving contact 110 and the contact support 130 is less than the possibility of friction between the mounting seat 140 and the contact support 130. In this way, the possibility of wear of the moving contact 110 due to friction between the moving contact 110 and the contact support 130 can be effectively reduced.
[0081] Furthermore, the material of the mounting seat 140 is set to be the same as the material of the contact support 130. When the mounting seat 140 moves relative to the contact support 130, even if the contactor shakes, or the contactor frequently undergoes electrical life and mechanical life tests, causing friction between the mounting seat 140 and the contact support 130, it is the friction between two structural members of the same material. Since the wear degree is smaller when two structural members of the same material rub against each other, such a setting can effectively reduce the wear degree of the mounting seat 140 and the contact support 130 when the mounting seat 140 and the contact support 130 rub against each other.
[0082] Based on the above description, when the possibility of friction between the moving contact 110 and the contact support 130 is small, and the wear degree of both is small when the mounting seat 140 and the contact support 130 rub against each other, the mounting seat 140 is not likely to move relative to the contact support 130. Based on this, since the moving contact 110 abuts against the mounting seat 140, the moving contact 110 is also not likely to move relative to the contact support 130. In this way, the possibility of skew of the moving contact 110 supported on the contact support 130 can be effectively reduced, thereby improving the reliability of contact between the moving contact 110 and the static contact 120 and improving the service performance of the contactor.
[0083] Figure 9 This is a schematic structural diagram of a mounting seat provided by an embodiment of the present application in a perspective view, combined with Figures 1 to 3, and Figure 9 , in the extending direction OZ of the moving contact, the mounting base 140 may include a first shoulder 141 and a second shoulder 142 that are opposite to each other, and the contact support 130 may include a first limiting portion 132 and a second limiting portion 133 that are opposite to each other.
[0084] Wherein, the distance between the first shoulder 141 and the second shoulder 142 is greater than the distance between the first limiting portion 132 and the second limiting portion 133, and a second gap J2 is formed between the first shoulder 141 and the first limiting portion 132, and between the second shoulder 142 and the second limiting portion 133.
[0085] The first shoulder 141 and the second shoulder 142 may be bumps provided on the main body of the mounting base 140 in the extending direction OZ of the moving contact, or may be the groove walls of the grooves provided on the mounting base 140 in the extending direction OZ of the moving contact. As Figure 9 shown, the mounting base 140 may be provided with the first shoulder 141 and the second shoulder 142 on both sides in the arrangement direction OY of the plurality of mounting cavities, so as to limit the mounting base 140 on both sides.
[0086] The first limiting portion 132 and the second limiting portion 133 may be two side surfaces of the contact support 130 in the extending direction OZ of the moving contact.
[0087] The distance between the first shoulder 141 and the second shoulder 142 is greater than the distance between the first limiting portion 132 and the second limiting portion 133. On the one hand, the first shoulder 141 can be located on the side of the first limiting portion 132 away from the second limiting portion 133, and the second shoulder 142 can be located on the side of the second limiting portion 133 away from the first limiting portion 132. Based on this, the movement of the mounting base 140 in the extending direction OZ of the moving contact can be restricted by the cooperation between the first shoulder 141 and the first limiting portion 132, and by the cooperation between the second shoulder 142 and the second limiting portion 133.
[0088] On the other hand, a second gap J2 can be formed between the first shoulder 141 and the first limiting portion 132, and a second gap J2 can be formed between the second shoulder 142 and the second limiting portion 133. In this way, not only can the installation of the mounting base 140 on the contact support 130 be facilitated, but also when the mounting base 140 moves relative to the contact support 130 each time, the first shoulder 141 and the second shoulder 142 of the mounting base 140 in the extending direction OZ of the moving contact do not rub against the contact support 130, reducing the possibility of wear between the mounting base 140 and the contact support 130.
[0089] On the premise that the mounting base 140 is provided with the first shoulder 141 and the second shoulder 142, in a possible case, Figure 10The figure is a schematic structural view of a moving contact provided by an embodiment of the present application, in combination with Figures 1 to 3 , and Figure 9 and Figure 10 , in the extending direction OZ of the moving contact, the moving contact 110 may include a third shoulder 112 and a fourth shoulder 113 that are opposite in position. The distance between the third shoulder 112 and the fourth shoulder 113 may be greater than the distance between the first shoulder 141 and the second shoulder 142. A first gap J1 is formed between the third shoulder 112 and the first limiting portion 132, and between the fourth shoulder 113 and the second limiting portion 133.
[0090] The third shoulder 112 and the fourth shoulder 113 may be bumps provided on the main body of the moving contact 110 in the extending direction OZ of the moving contact. As Figure 9 shown, the third shoulder 112 and the fourth shoulder 113 may be provided on both sides of the moving contact 110 in the arrangement direction OY of the plurality of mounting cavities, so as to limit the moving contact 110 on both sides.
[0091] The distance between the third shoulder 112 and the fourth shoulder 113 is greater than the distance between the first shoulder 141 and the second shoulder 142. On the one hand, the third shoulder 112 can be located on the side of the first limiting portion 132 away from the second limiting portion 133, and the fourth shoulder 113 can be located on the side of the second limiting portion 133 away from the first limiting portion 132.
[0092] Based on this, not only can the movement of the mounting base 140 in the extending direction OZ of the moving contact be restricted by the cooperation between the third shoulder 112 of the mounting base 140 and the first limiting portion 132, and the cooperation between the second shoulder 142 and the second limiting portion 133, thereby restricting the movement of the moving contact 110 in the extending direction OZ of the moving contact. The movement of the moving contact 110 in the extending direction OZ of the moving contact can also be restricted by the cooperation between the third shoulder 112 and the first limiting portion 132, and the cooperation between the fourth shoulder 113 and the second limiting portion 133. In this way, the moving contact 110 can be double-limited in the extending direction OZ of the moving contact, effectively reducing the possibility of the moving contact 110 moving relative to the contact support 130 in the extending direction OZ of the moving contact.
[0093] On the other hand, a first gap J1 can be formed between the third shoulder 112 and the first limiting portion 132, and a first gap J1 can be formed between the fourth shoulder 113 and the second limiting portion 133. In this way, not only can the installation of the moving contact 110 on the contact support 130 be facilitated, but also the friction between the moving contact 110 and the contact support 130 when the moving contact 110 moves relative to the contact support 130 can be avoided.
[0094] In another possible case, the moving contact 110 may not be provided with the above-mentioned third shoulder 112 and fourth shoulder 113.
[0095] In this case, the moving contact 110 can be indirectly limited in the extending direction OZ of the moving contact through the mounting seat 140. Since the moving contact 110 does not need to be provided with the third shoulder 112 and the fourth shoulder 113, the forming process of the moving contact 110 can be simplified, the material usage of the moving contact 110 can be saved, and the manufacturing cost of the moving contact 110 can be saved.
[0096] Based on the previous embodiments, in some possible designs, the second gap J2 between the first shoulder 141 and the first limiting portion 132 may be equal to the second gap J2 between the second shoulder 142 and the second limiting portion 133.
[0097] With such a setting, when the mounting seat 140 moves relative to the contact support 130, assuming the contactor shakes, the possibility of friction between the first shoulder 141 and the first limiting portion 132 is equivalent to the possibility of friction between the second shoulder 142 and the second limiting portion 133. In this way, even if there is wear, the wear degree of the first shoulder 141 and the first limiting portion 132 is basically equivalent to the wear degree of the second shoulder 142 and the second limiting portion 133, and the possibility of subsequent skew of the mounting seat 140 can be reduced.
[0098] In some other possible designs, the first gap J1 between the third shoulder 112 and the first limiting portion 132 may be equal to the first gap J1 between the fourth shoulder 113 and the second limiting portion 133.
[0099] With such a setting, when the moving contact 110 moves relative to the contact support 130, assuming the contactor shakes, the possibility of friction between the third shoulder 112 and the first limiting portion 132 is equivalent to the possibility of friction between the fourth shoulder 113 and the second limiting portion 133. In this way, even if there is wear, the wear degree of the third shoulder 112 and the first limiting portion 132 is basically equivalent to the wear degree of the fourth shoulder 113 and the second limiting portion 133, and the possibility of subsequent skew of the moving contact 110 can be reduced.
[0100] In some other possible designs, the second gap J2 between the first shoulder 141 and the first limiting portion 132 may be equal to the second gap J2 between the second shoulder 142 and the second limiting portion 133, and the first gap J1 between the third shoulder 112 and the first limiting portion 132 may be equal to the first gap J1 between the fourth shoulder 113 and the second limiting portion 133.
[0101] Based on the same principle as the previous two designs, this design is arranged in this way, which can not only reduce the possibility of subsequent deflection of the mounting seat 140, but also reduce the possibility of subsequent deflection of the moving contact 110, thereby ensuring the reliability of the contact between the moving contact 110 and the static contact 120.
[0102] In some embodiments, in combination Figure 2 , Figure 3 and Figure 9 The mounting cavity 131 may further include a third cavity wall 1313 and a fourth cavity wall 1314 which are located opposite to each other, and the third cavity wall 1313 and the fourth cavity wall 1314 are both connected to the first cavity wall 1311 and the second cavity wall 1312. In the arrangement direction of the third cavity wall 1313 and the fourth cavity wall 1314, the mounting seat 140 includes a first limiting surface 143 and a second limiting surface 144 which are located opposite to each other.
[0103] The distance between the first limiting surface 143 and the second limiting surface 144 is smaller than the distance between the third cavity wall 1313 and the fourth cavity wall 1314 , and a second gap J2 is formed between the first limiting surface 143 and the third cavity wall 1313 , and between the second limiting surface 144 and the fourth cavity wall 1314 .
[0104] The arrangement direction of the third cavity wall 1313 and the fourth cavity wall 1314 is consistent with the arrangement direction OY of the aforementioned plurality of installation cavities.
[0105] The distance between the first limiting surface 143 and the second limiting surface 144 is smaller than the distance between the third cavity wall 1313 and the fourth cavity wall 1314, so that a second gap J2 can be formed between the first limiting surface 143 and the third cavity wall 1313, and a second gap J2 can be formed between the second limiting surface 144 and the fourth cavity wall 1314. In this way, it is not only easy to install the mounting seat 140 on the contact support 130, but also it is prevented that the mounting seat 140 rubs against the contact support 130 on both sides of the arrangement direction of the third cavity wall 1313 and the fourth cavity wall 1314 when the mounting seat 140 moves relative to the contact support 130, thereby reducing the possibility of wear of the mounting seat 140 and the contact support 130.
[0106] In some embodiments, in combination Figure 2 , Figure 3 and Figure 10 In the arrangement direction of the third cavity wall 1313 and the fourth cavity wall 1314, the moving contact 110 may include a first side surface 114 and a second side surface 115 that are opposite to each other. The distance between the first side surface 114 and the second side surface 115 may be smaller than the distance between the first limiting surface 143 and the second limiting surface 144, and a second gap J2 is formed between the first side surface 114 and the third cavity wall 1313, and between the second side surface 115 and the fourth cavity wall 1314.
[0107] With such a setting, it is not only convenient for the moving contact 110 to be installed on the contact support 130, but also when the moving contact 110 moves relative to the contact support 130, friction between the two sides of the moving contact 110 in the arrangement direction of the third cavity wall 1313 and the fourth cavity wall 1314 and the contact support 130 can be avoided.
[0108] Figure 11 The following is a schematic structural diagram of a mounting base provided by an embodiment of the present application from another perspective. Combining Figure 1 、 Figure 10 and Figure 11 , in some embodiments, a first limiting structure 116 may be provided on one side of the moving contact 110 facing the mounting base 140, and a second limiting structure 145 may be provided on one side of the mounting base 140 facing the moving contact 110. The first limiting structure 116 and the second limiting structure 145 cooperate with each other to fix the relative position between the moving contact 110 and the mounting base 140.
[0109] Figure 10 and Figure 11 show that the first limiting structure 116 is a groove and the second limiting structure 145 is a protrusion. In practice, the first limiting structure 116 may also be a protrusion, and correspondingly, the second limiting structure 145 is a groove. The present application does not limit the specific structures of the first limiting structure 116 and the second limiting structure 145.
[0110] The number of the first limiting structure 116 and the second limiting structure 145 may both be multiple, so as to improve the fixing reliability between the moving contact 110 and the mounting base 140 through the cooperation of multiple pairs of the first limiting structure 116 and the second limiting structure 145.
[0111] Among them, the number of the first limiting structure 116 and the second limiting structure 145 may be the same. For example, the number of both the first limiting structure 116 and the second limiting structure 145 may be two. Or, as Figure 10 and Figure 11 show, the number of the first limiting structure 116 and the second limiting structure 145 may also be different. For example, the number of the first limiting structure 116 may be 4, and the number of the second limiting structure 145 may be 2.
[0112] The first limiting structure 116 and the second limiting structure 145 cooperate with each other, making the relative position between the moving contact 110 and the mounting base 140 relatively fixed. In this way, the moving contact 110 and the mounting base 140 restrain each other, and relative movement between the two is not easy to occur, which is also convenient for improving the position stability of both of them relative to the contact support 130 in a plane perpendicular to the moving direction OX of the contact support.
[0113] Figure 12Schematic diagram of a combined structure of a moving contact and a moving contact from another perspective provided by an embodiment of the present application. In combination with Figure 1 and Figure 12 , the moving contact 111 is disposed on the side of the moving contact 110 facing away from the mounting base 140.
[0114] Exemplarily, the moving contact 111 can be disposed on the side of the moving contact 110 facing away from the mounting base 140 by means of riveting or welding.
[0115] In some embodiments, the first limiting structure 116 can be formed by stamping on the moving contact 110 along the moving direction OX of the contact support, and the first limiting structure 116 is a groove on the side of the moving contact 110 facing the mounting base 140. Correspondingly, the second limiting structure 145 is the aforementioned protrusion. The protrusion corresponds to the groove.
[0116] While forming the groove by stamping on the moving contact 110, a convex column 117 corresponding to the groove can be formed on the side of the moving contact 110 facing away from the mounting base 140. The moving contact 111 is in contact with the convex column 117, and the convex column 117 is used to position the moving contact 111.
[0117] Since the groove and the convex column 117 are structures formed on both sides of the moving contact 110 by stamping process, the number of grooves is the same as the number of convex columns 117. Figure 10 and Figure 12 The number of grooves shown in
[0118] is 4, and the number of convex columns 117 is also 4. In practice, the number of grooves and convex columns 117 can also be other values, and the present application does not limit this.
[0119] Multiple convex columns 117 can be separated at both ends of the moving contact 110 in its extending direction. In this case, the convex columns 117 at both ends can position the moving contacts 111 at both ends.
[0120] Among them, the groove and the convex column 117 can be formed by stamping from the side of the moving contact 110 facing the mounting base 140 to the side of the moving contact 110 facing away from the mounting base 140.
[0121] In combination with Figure 1 andFigure 9 In some embodiments, a limiting groove 146 may be provided on one side of the mounting seat 140 facing the second cavity wall 1312. The first end of the elastic member 150 is located in the limiting groove 146 and abuts against the bottom of the limiting groove 146.
[0122] The side of the mounting seat 140 facing the second cavity wall 1312 is planar.
[0123] In a possible case, the limiting groove 146 may be a groove structure directly provided on the side of the mounting seat 140 facing the second cavity wall 1312. In this case, the mounting seat 140 needs to have a certain thickness, otherwise the depth of the provided limiting groove 146 is insufficient and cannot play a good limiting role for the elastic member 150.
[0124] In another possible case, a boss may be provided on the side of the mounting seat 140 facing the second cavity wall 1312, and the limiting groove 146 is provided on the boss. In this case, the requirement for the thickness of the mounting seat 140 is relatively low, and the mounting seat 140 can be made thinner to facilitate saving the material cost of the mounting seat 140.
[0125] The limiting groove 146 may be an annular groove structure.
[0126] The limiting groove 146 is provided on the side of the mounting seat 140 facing the second cavity wall 1312. After the first end of the elastic member 150 is located in the limiting groove 146, on the one hand, the first end of the elastic member 150 can abut against the bottom of the limiting groove 146. In this way, it is convenient to make the mounting seat 140 and the moving contact 110 abut tightly under the pre-tightening force of the elastic member 150, and the moving contact 110 can abut tightly against the first cavity wall 1311. On the other hand, the side wall of the elastic member 150 near its first end can abut against the groove wall of the limiting groove 146. In this way, the first end of the elastic member 150 can be limited by the groove wall of the limiting groove 146, reducing the possibility of deflection of the first end of the elastic member 150.
[0127] It can be seen that the mounting seat 140 of the present application not only has the function of protecting the moving contact 110 from being worn or less worn, but also has the function of limiting the elastic member 150, and can realize the reuse of structural members, which is convenient for saving the number of parts used while ensuring the performance of the contact mechanism 100.
[0128] It should be noted that when the material of the mounting base 140 is plastic, the fitting clearance between the groove wall of the limiting groove 146 and the elastic member 150 can be set to be relatively small. In this way, the limiting effect of the groove wall of the limiting groove 146 on the first end of the elastic member 150 can be improved, and the possibility of deflection of the first end of the elastic member 150 can be further reduced, so that the possibility of uneven force on both ends of the moving contact 110 causing the moving contact 110 to deflect can be reduced. When the moving contact 110 does not deflect, the reliability of the contact between the moving contact 110 and the static contact 120 is relatively high, which is convenient for reducing the temperature rise of the contactor and improving the mechanical life and electrical life of the contactor.
Claims
1. A contact mechanism, characterized in that: include: The contact support is provided with a mounting cavity; in the moving direction of the contact support, the mounting cavity comprises a first cavity wall and a second cavity wall which are opposite to each other; A moving contact, partially located in the mounting cavity and supported by the first cavity wall; A mounting seat, partly located in the mounting cavity, wherein a side of the mounting seat facing the first cavity wall abuts against the moving contact; an elastic member, located between the mounting seat and the second cavity wall, wherein a first end of the elastic member abuts against a side of the mounting seat facing the second cavity wall, and a second end of the elastic member abuts against the second cavity wall; There is a first gap between the moving contact and the contact support, there is a second gap between the mounting seat and the contact support, the first gap is larger than the second gap, and the mounting seat is made of the same material as the contact support.
2. The contact mechanism according to claim 1, characterized in that: In the extending direction of the moving contact, the mounting seat includes a first shoulder and a second shoulder located opposite to each other, and the contact support includes a first limiting portion and a second limiting portion located opposite to each other; The distance between the first shoulder and the second shoulder is greater than the distance between the first limiting portion and the second limiting portion, and the second gap is formed between the first shoulder and the first limiting portion, and between the second shoulder and the second limiting portion.
3. The contact mechanism according to claim 2, characterized in that: In the extension direction of the moving contact, the moving contact comprises a third shoulder and a fourth shoulder which are opposite to each other; The distance between the third shoulder and the fourth shoulder is greater than the distance between the first shoulder and the second shoulder, and the first gap is formed between the third shoulder and the first limiting portion, and between the fourth shoulder and the second limiting portion.
4. The contact mechanism according to claim 3, characterized in that: The second gap between the first shoulder and the first limiting portion is equal to the second gap between the second shoulder and the second limiting portion; and / or, A first gap between the third shoulder and the first limiting portion is equal to a first gap between the fourth shoulder and the second limiting portion.
5. The contact mechanism according to claim 1, characterized in that: The installation cavity further comprises a third cavity wall and a fourth cavity wall which are located opposite to each other, and the third cavity wall and the fourth cavity wall are both connected to the first cavity wall and the second cavity wall; In the arrangement direction of the third cavity wall and the fourth cavity wall, the mounting seat includes a first limiting surface and a second limiting surface that are relatively positioned, the distance between the first limiting surface and the second limiting surface is smaller than the distance between the third cavity wall and the fourth cavity wall, and the second gap is formed between the first limiting surface and the third cavity wall, and between the second limiting surface and the fourth cavity wall.
6. The contact mechanism according to claim 5, characterized in that: In the arrangement direction of the third cavity wall and the fourth cavity wall, the moving contact includes a first side surface and a second side surface which are opposite to each other; The distance between the first side surface and the second side surface is smaller than the distance between the first limiting surface and the second limiting surface, and the second gap is formed between the first side surface and the third cavity wall, and between the second side surface and the fourth cavity wall.
7. The contact mechanism according to claim 1, characterized in that: A first limiting structure is provided on the side of the moving contact facing the mounting seat, and a second limiting structure is provided on the side of the mounting seat facing the moving contact. The first limiting structure cooperates with the second limiting structure to fix the relative position between the moving contact and the mounting seat.
8. The contact mechanism according to claim 7, characterized in that: It also includes a moving contact, which is arranged on a side of the moving contact facing away from the mounting seat; The first limiting structure is formed by stamping on the moving contact along the moving direction of the contact support, and the first limiting structure is a groove on the side of the moving contact facing the mounting seat; correspondingly, the second limiting structure is a protrusion corresponding to the groove; When the groove is formed by stamping on the moving contact, a convex column corresponding to the groove is formed on the side of the moving contact facing away from the mounting seat, and the moving contact contacts the convex column, which is used to position the moving contact.
9. The contact mechanism according to any one of claims 1 to 8, characterized in that: A limiting groove is provided on one side of the mounting seat facing the second cavity wall, and the first end of the elastic member is located in the limiting groove and abuts against the bottom of the limiting groove.
10. A contactor, characterized in that: The contact mechanism comprises the contact mechanism described in any one of claims 1 to 9.