Contactor frame structure and contactor
By designing the sliding limit mechanism of the guide groove and guide in the contactor frame structure, the problem of unstable movement of the moving contact piece in the existing contactor structure is solved, and more stable and accurate movement of the moving contact piece is achieved, which improves the reliability and service life of the contactor.
Patent Information
- Application Number
- CN202422210122.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-09
AI Technical Summary
While ensuring the reliable movement of the moving contact piece, the existing contactor structure cannot effectively guide the contact bracket, resulting in unstable movement of the moving contact piece and prone to poor contact or mechanical wear.
A contactor frame structure is designed, in which the inner wall of the housing is provided with a guide groove, and the sliding limit of the guide member of the contact bracket is located in the guide groove, ensuring that under the action of electromagnetic force, when the contact bracket moves in the vertical direction, the guide member cooperates with the guide groove to achieve accurate positioning and guidance.
Through precise limiting and guidance, the movement of the moving contact piece during the contactor is more stable and accurate, reducing poor contact or mechanical wear caused by improper movement of the moving contact piece, thereby improving the reliability and service life of the contactor.
Smart Images
Figure CN223023131U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of contactors, in particular to a contactor frame structure and a contactor. Background Art
[0002] At present, the structure of the contactor on the market includes a ceramic housing, as well as two static contacts, a moving contact piece and a driving mechanism installed in the accommodating cavity of the sealed housing. The moving contact piece and the two static contacts are arranged opposite to each other vertically. The driving mechanism mainly includes a driving coil, a moving iron core, a contact support, a return spring and a push rod. When the driving coil is energized, the magnetic force generated by it makes the push rod move vertically upward, and drives the moving contact piece to be connected with the two static contacts respectively, and the contactor is in the closed working state; when the driving coil is de-energized, the push rod moves vertically downward and resets under the action of the return spring, and drives the moving contact piece to be disconnected from the two static contacts respectively, and the contactor is in the open working state.
[0003] As an important component on the contactor, the contact support not only needs to transmit force but also needs to ensure the reliable movement of the moving contact piece part. In the related art, relay products generally use the cooperation between the moving contact piece and the limiting ribs on the housing for limiting, or use a fixing bracket and the housing limiting ribs for limiting, but this can only limit the degrees of freedom of the contact support in two directions, and the guiding effect on the movement of the moving contact piece is not good. Summary of the Utility Model
[0004] The main object of the utility model is to provide a contactor frame structure and a contactor, aiming to provide a contactor frame structure with a good guiding effect on the internal contact support.
[0005] To achieve the above object, the contactor frame structure proposed by the utility model includes:
[0006] A housing, the housing is formed with an accommodating cavity, and two opposite inner walls of the accommodating cavity are respectively formed with guiding grooves; and
[0007] A contact support, the contact support includes a push plate, a push rod and a mounting portion oppositely arranged at both ends of the push plate, the push plate is provided with guiding members, and both ends of the guiding members are respectively slidably limited in one of the guiding grooves.
[0008] In an embodiment, two convex ribs are spaced on the inner side wall of the housing, and the two convex ribs and the inner side wall jointly enclose a guiding groove with an opening facing the contact support.
[0009] In an embodiment, the two convex ribs are integrally formed with the housing.
[0010] In an embodiment, the guiding members are two guiding rings, the two guiding rings are respectively arranged on both sides of the push plate, and each guiding ring is slidably limited between the two convex ribs.
[0011] In one embodiment, the guiding member is formed with a plug hole, the push rod is inserted into the plug hole, and the guiding member is detachably arranged on the push rod.
[0012] In one embodiment, the push plate, the guiding member, the push rod and the mounting portion are all integrally formed structures.
[0013] In one embodiment, the mounting portion includes two vertically arranged plates spaced apart from each other, and cross plates are respectively arranged at one ends of the two vertically arranged plates away from the push plate.
[0014] The present utility model further provides a contactor, comprising:
[0015] A contactor frame structure;
[0016] A static contact, the static contact is arranged in the accommodating cavity, and a partial structure of the static contact is exposed outside the housing; and
[0017] A moving contact piece, the moving contact piece is arranged at one end of the contact support close to the static contact, and the moving contact piece can abut against or separate from the static contact.
[0018] In one embodiment, a conducting piece is arranged on the mounting portion, and two auxiliary contacts are arranged on one side of the housing facing the conducting piece, and partial structures of the two auxiliary contacts extend outside the housing.
[0019] In one embodiment, the contactor further includes a driving mechanism, the driving mechanism is a magnetic device, the magnetic device includes a coil and a moving iron core, the coil is sleeved on the moving iron core, and one end of the push rod away from the moving contact piece is connected to the moving iron core.
[0020] In the technical solution of the present utility model, a contactor frame structure and a contactor are provided. Among them, the contactor frame structure includes a housing and a contact support. The housing is formed with an accommodating cavity, and guiding grooves are respectively formed on two opposite inner walls of the accommodating cavity. Correspondingly, the contact support includes a push plate and guiding members arranged on both sides of the push plate. Both ends of the guiding members are respectively slidably limited in a guiding groove. When the contactor is powered on, the contact support will move in a direction perpendicular to the push plate under the action of electromagnetic force. At this time, the guiding members arranged on both sides of the push plate will cooperate with the guiding grooves on the inner wall of the housing to achieve precise limiting and guiding of the contact support, which can ensure that the movement of the moving contact piece is more stable and accurate during the operation of the contactor, reduce poor contact or mechanical wear caused by improper movement of the moving contact piece, and thus improve the reliability and service life of the contactor. Description of the Drawings
[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0022] Figure 1 Schematic diagram of the structure of the contact support in the contactor frame structure provided by the present invention;
[0023] Figure 2 For Figure 1 Schematic diagram of the structure of the guiding member in
[0024] Figure 3 Schematic diagram of the structure of the housing in the contactor frame structure provided by the present invention;
[0025] Figure 4 Cross-sectional view of an embodiment of the contactor provided by the present invention;
[0026] Figure 5 Exploded view of the contactor provided by the present invention.
[0027] Explanation of the reference numerals in the drawings:
[0028] 1000, contactor; 1, housing; 11, rib; 12, guiding groove; 13, mounting hole; 14, static contact; 2, contact support; 21, push plate; 211, mounting groove; 22, push rod; 23, mounting part; 231, vertical plate; 232, horizontal plate; 3, guiding member; 31, guiding ring; 32, insertion hole; 4, auxiliary contact; 5, moving contact piece; 6, driving mechanism; 61, moving iron core; 7, elastic member.
[0029] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Specific embodiments
[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.
[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0033] The present utility model provides a contactor frame structure, aiming to provide a contactor frame structure with good guiding effect on the internal contact support. Figures 1 to 5 It is a schematic structural diagram of an embodiment provided by the contactor frame structure of the present utility model.
[0034] Please refer to Figures 1 to 5 , the present utility model provides a contactor frame structure, including a housing 1 and a contact support 2. The housing 1 forms a receiving cavity, and guiding grooves 12 are respectively formed on two opposite inner walls of the receiving cavity. The contact support 2 includes a push plate 21, and push rods 22 and mounting parts 23 oppositely arranged at both ends of the push plate 21. The push plate 21 is provided with a guiding member 3, and both ends of the guiding member 3 are respectively slidably limited in a guiding groove 12.
[0035] In the technical solution of the present utility model, a contactor frame structure and a contactor are proposed. Among them, the contactor frame structure includes a housing 1 and a contact support 2. The housing 1 forms a receiving cavity, and guiding grooves 12 are respectively formed on two opposite inner walls of the receiving cavity. Correspondingly, the contact support 2 includes a push plate 21 and guiding members 3 provided on both sides of the push plate 21. The two ends of the guiding members 3 are respectively slidably limited in a guiding groove 12. When the contactor is powered on, the contact support 2 will move in a direction perpendicular to the push plate 21 under the action of electromagnetic force. At this time, the guiding members 3 provided on both sides of the push plate 21 will cooperate with the guiding grooves 12 on the inner wall of the housing 1 to achieve precise limiting and guiding of the contact support 2, which can ensure that the moving contact piece 5 moves more stably and accurately during the operation of the contactor, reducing poor contact or mechanical wear caused by improper movement of the moving contact piece 5, thereby improving the reliability and service life of the contactor.
[0036] It should be noted that the guiding groove 12 can be obtained by machining on the inner wall of the housing 1, or by providing two ribs 11 on the inner wall of the housing 1 so that the two ribs 11 are spaced apart. The present utility model does not limit this. In an embodiment of the present utility model, two ribs 11 are provided at intervals on the inner side wall of the housing 1. Specifically, please further refer to Figure 3 , the two ribs 11 and the inner side wall jointly enclose a guiding groove 12 with an opening facing the contact support 2. The advantage of providing two ribs 11 compared to directly machining a guiding groove 12 on the inner wall is that the design of the ribs 11 simplifies the manufacturing process, reducing processing costs and time. The ribs 11 can be directly integrally formed with the housing 1 by methods such as die casting or compression molding, which can avoid additional machining steps and improve production efficiency. At the same time, the rib 11 structure can provide sufficient strength and stability to ensure the durability and reliability of the guiding groove 12. The design of the ribs 11 also helps to improve the assembly accuracy of the product because the ribs 11 can accurately position the contact support 2 during the assembly process, thereby ensuring the precise fit of the contact support 2 during assembly. Further, to improve the structural strength of the ribs 11, the ribs 11 are integrally formed with the housing 1. There are two ribs 11 on each inner side wall, and a total of four ribs 11 on the opposite sides. The combination of the integrally formed ribs 11 and the housing 1 can significantly improve production efficiency, making the entire manufacturing process smoother and faster. Secondly, the integrally formed structure usually has better mechanical strength and stability. There are no seams or connection points between the ribs 11 and the housing 1, thereby reducing potential weak points and failure points. In addition, this design also helps to improve the durability and reliability of the product. The close combination of the ribs 11 and the housing 1 reduces wear or loosening caused by vibration or long-term use.
[0037] In an embodiment of the present utility model, the guiding member 3 is a guiding ring 31, or it can also be other guiding structures such as guiding rails and guiding wheels. The present utility model does not limit this. In this embodiment, two guiding rings 31 are respectively arranged on both sides of the push plate 21, and each guiding ring 31 is slidably limited between the two ribs 11. This design can achieve a line-plane fit with the moving component, thereby effectively reducing friction and wear. Since the curved surface contact area of the guiding ring 31 is relatively large, it can disperse the force and reduce the contact stress. This not only helps to improve the lifespan of the component, but also reduces the heat generated by friction and energy loss. In addition, the smooth movement track of the guiding ring 31 helps to ensure the stability and accuracy of the movement of the component.
[0038] Furthermore, a plugging hole 32 is provided at the central position of the guiding member 3, and the guiding member 3 is fixed on the push rod 22 through the plugging hole 32. Specifically, please further refer to Figure 1 and Figure 2 . With such a setting, the quick disassembly and assembly of the guiding member 3 can be realized, improving the maintenance and repair efficiency of the contactor. When it is necessary to overhaul or replace components of the contactor, the guiding member 3 can be simply removed from the push rod 22 through the plugging hole 32 without complex tools or additional disassembly steps, greatly simplifying the maintenance process. In addition, this design also helps to quickly replace or upgrade components during the production process, improving the flexibility and efficiency of production.
[0039] In another embodiment of the present utility model, the push plate 21, the guiding member 3, the push rod 22 and the mounting portion 23 are all integrally formed structures, formed by injection molding with encapsulation. The surfaces of the injection-molded components are smooth and free of burrs, which helps to reduce wear and improve the service life of the components. The push plate 21 is made of plastic material with good insulation performance, improving the safety of electrical equipment. The plastic material also has good elasticity and toughness, and can absorb vibrations and impacts to a certain extent, protecting the sensitive components inside the contactor 1000.
[0040] In an embodiment of the present utility model, the relay is configured with auxiliary contacts 4. The mounting portion 23 is provided with a conducting piece, and two auxiliary contacts 4 are provided on one side of the housing 1 facing the conducting piece. Specifically, please further refer to Figure 5, a part of the structure of the two auxiliary contacts 4 extends out of the housing 1. When the push rod 22 pushes the moving contact piece 5 to start moving, the conduction piece provided on the mounting portion 23 will also move downward together until both ends of the conduction piece are respectively in contact with the two auxiliary contacts 4, and the calibration circuit is conducted. At this time, the moving contact piece 5 of the contactor and the two static contact heads 14 are also in a contact state, and the contactor is closed. If the moving contact piece 5 and the two static contact heads 14 are adhered after closing, the calibration circuit will always be in a conductive state. When the preset alarm time is reached, the calibration circuit will alarm or use other means to directly cut off the connection between the moving contact piece 5 and the auxiliary contact 4, thus ensuring the safety of the equipment. The mounting portion 23 includes a vertical plate 231 and a horizontal plate 232, and the conduction piece is installed on the horizontal plate 232 of the mounting portion 23.
[0041] The present utility model also provides a contactor, which includes a contactor frame structure, a static contact head 14 and a moving contact piece 5. The static contact head 14 is arranged in the accommodating cavity, and a part of the structure of the static contact head 14 is exposed outside the housing 1. The moving contact piece 5 is arranged at one end of the contact support 2 close to the static contact head 14, and the moving contact piece 5 can abut against or disengage from the static contact head 14. The specific structure of the contactor frame structure refers to the above-mentioned embodiment. Since this contactor adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated one by one here.
[0042] In the embodiment of the contactor provided by the present utility model, the contactor further includes a driving mechanism 6, and the driving mechanism 6 is a magnetic device. Specifically, please further refer to Figure 4 , the magnetic device includes a coil and a moving iron core 61. The coil is sleeved on the moving iron core 61. One end of the push rod 22 far from the moving contact piece 5 is connected to the moving iron core 61. A coil (not marked in the figure) is arranged on the periphery of the moving iron core 61. When the coil is energized, a magnetic field is generated to drive the moving iron core 61 to move up and down, thereby driving the push rod 22 to move, driving the moving contact piece 5 to move towards the static contact head 14 and close with it, so as to connect the circuit. When the coil is powered off, the magnetic field disappears, and the moving contact piece 5 returns to the initial position under the action of the spring force and disconnects from the static contact head 14, cutting off the circuit. This driving method has a fast response speed, simple control, and can control the closing force of the contactor by adjusting the magnitude of the coil current to ensure reliable electrical connection in a high-voltage DC system.
[0043] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.
Claims
1. A contactor frame structure, characterized in that: include: A housing, wherein the housing is formed with a receiving cavity, and two oppositely disposed inner walls of the receiving cavity are respectively formed with guide grooves; and The contact bracket comprises a push plate and a push rod and a mounting portion which are arranged at two ends of the push plate. The push plate is provided with a guide member, and the two ends of the guide member are respectively slidably limited in a guide groove.
2. The contactor frame structure according to claim 1, characterized in that: The inner side wall of the housing is provided with two convex ribs at intervals, and the two convex ribs and the inner side wall are jointly enclosed to form a guide groove with an opening facing the contact support.
3. The contactor frame structure according to claim 2, characterized in that: The two convex ribs are integrally formed with the shell.
4. The contactor frame structure according to claim 3, characterized in that: The guide member is two guide rings, which are respectively arranged on both sides of the push plate, and each guide ring is slidably limited between the two convex ribs.
5. The contactor frame structure according to any one of claims 1 to 4, characterized in that: The guide member is formed with an inserting hole, the push rod is inserted into the inserting hole, and the guide member is detachably arranged on the push rod.
6. The contactor frame structure according to any one of claims 1 to 4, characterized in that: The push plate, the guide member, the push rod and the mounting portion are all integrally formed structures.
7. The contactor frame structure according to any one of claims 1 to 4, characterized in that: The mounting portion comprises two vertical plates arranged at intervals, and a horizontal plate is respectively arranged at one end of the two vertical plates away from the push plate.
8. A contactor, characterized in that: include: The contactor frame structure according to any one of claims 1 to 7; A stationary contact, wherein the stationary contact is arranged in the accommodation cavity, and a part of the structure of the stationary contact is exposed in the housing; as well as A moving contact piece is arranged at one end of the contact support close to the stationary contact, and the moving contact piece can abut against or be separated from the stationary contact.
9. The contactor according to claim 8, characterized in that: The mounting portion is provided with a conducting sheet, and two auxiliary contacts are provided on a side of the shell facing the conducting sheet, and parts of the structures of the two auxiliary contacts extend out of the shell.
10. The contactor according to claim 8, characterized in that: The contactor further comprises a driving mechanism, which is a magnetic device. The magnetic device comprises a coil and a moving iron core. The coil is sleeved on the moving iron core, and one end of the push rod away from the moving contact piece is connected to the moving iron core.