Relay

Abstract

The utility model discloses a relay which comprises an on-off assembly and a base assembly. The on-off assembly comprises an electromagnetic module, a push rod capable of stretching out and drawing back relative to the electromagnetic module, a sliding block module and a movable contact arranged on the sliding block module, the sliding block module is provided with a guide column, and one end of the push rod is connected with the sliding block module; the base assembly comprises a base and a static contact arranged on the base, and a sliding groove extending in the axial direction of the push rod is formed in the base. The sliding block module is matched with the sliding groove through the guide column and slides in the axial direction of the push rod, and the push rod can drive the sliding block module under the magnetic force of the electromagnetic module so that the movable contact can make contact with or be separated from the static contact. Through the arrangement, the movable contact is always kept in the axial direction of the push rod during movement, and the movable contact is prevented from deviating in other directions.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a relay. Background Technology

[0002] A magnetic latching relay is an automatic switching element that uses the interaction of permanent magnet force and electromagnetic force to drive the relative movement of mechanical parts to produce a predetermined response. It generally consists of a base, an upper shell, a magnetic circuit section, and a contact section. The magnetic circuit section includes a coil, a coil frame, a permanent magnet, a moving iron core, a push rod, and a yoke. The contact section includes a moving contact and a stationary contact. The yoke is located outside the coil frame and the permanent magnet to form the magnetic latching circuit structure. When different currents flow through the coil, different electromagnetic forces are generated. The push rod, under the action of the magnetic force, drives the moving contact to contact or separate from the stationary contact. When the current in the coil disappears, the electromagnetic force disappears as well, but the magnetic circuit generated by the permanent magnet force maintains the contact or separation state of the moving contact and the stationary contact, achieving the purpose of connecting or disconnecting the circuit.

[0003] In existing relays, because there is no structure to restrict the degree of freedom of the moving contact, the push rod is also prone to deflection under the action of magnetic force, which will cause the moving contact to shift accordingly, change the relative position between the moving contact and the stationary contact, thereby affecting the contact area between the moving contact and the stationary contact, thus affecting the efficiency of connection, or even failing to energize normally. Utility Model Content

[0004] To address at least one of the problems existing in the prior art, this utility model provides a relay that, by setting a guide structure to make the moving contact move in a specific direction, ensures the linear movement of the moving contact, thereby effectively solving the problem of moving contact offset affecting the stability of energization in existing relays.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] Relays, including:

[0007] The on / off assembly includes an electromagnetic module, a push rod that can extend and retract relative to the electromagnetic module, a slider module, and a moving contact set on the slider module. The slider module is provided with a guide post, and one end of the push rod is connected to the slider module.

[0008] The base assembly includes a base, a stationary contact disposed on the base, and a groove extending along the push rod axis on the base;

[0009] The slider module slides along the push rod axis through the guide post and the slide groove. The push rod can drive the slider module under the magnetic force of the electromagnetic module, so that the moving contact and the stationary contact can contact or separate.

[0010] Specifically, the slider module includes a conductive sheet, a slide block, a limiting bracket set on the slide block, and an elastic element. The guide post is set on the side of the slide block facing the base. The conductive sheet is slidably set on the limiting bracket. The moving contact is set on the conductive sheet. The slide block is provided with a receiving groove facing the opening of the conductive sheet. One end of the elastic element is set in the receiving groove, and the other end of the elastic element is connected to the conductive sheet.

[0011] Specifically, the conductive sheet has a protrusion on the side facing the limiting bracket, and the limiting bracket has a limiting hole. The protrusion is slidably inserted into the limiting hole along the axial direction of the push rod to limit the sliding of the conductive sheet along the radial direction of the push rod.

[0012] Specifically, the inner side of the limiting bracket abuts against the side of the conductive sheet in a direction perpendicular to the axial direction of the push rod to restrict the circumferential rotation of the conductive sheet.

[0013] Specifically, the bottom of the slide is provided with a slot, which opens to one side of the slide and the opening direction of the slot intersects with the extension direction of the guide post. One end of the push rod is provided with a protruding edge that cooperates with the slot, and the protruding edge is installed in the slot from the outside to the inside along the extension direction of the slot.

[0014] Specifically, the opening direction of the slot intersects perpendicularly with the extension direction of the guide post.

[0015] Specifically, the slide is made of insulating material.

[0016] Specifically, the slide has a slot, and the limit bracket has a corresponding rod in the slot. The limit bracket is installed on the slide by inserting the rod into the slot.

[0017] Specifically, the slide is provided with a locking platform, and the limiting bracket is provided with a locking hole corresponding to the locking platform. The limiting bracket is set on the slide by elastic deformation so that the locking hole is fastened to the locking platform.

[0018] Specifically, the base assembly also includes an arc-extinguishing magnet. The base has a mounting groove between the moving contact and the stationary contact, and the arc-extinguishing magnet is placed in the mounting groove to provide magnetic force for extinguishing the arc between the moving contact and the stationary contact.

[0019] In summary, compared with the prior art, the relay provided by this utility model has the following technical effects:

[0020] In the embodiments of this utility model, by providing guide posts for the slider module and providing a sliding groove extending along the axial direction of the push rod on the base, the slider module slides along the axial direction of the push rod through the guide posts cooperating with the sliding groove. This ensures that the slider module does not twist during the process of the push rod carrying the slider module relative to the base, overcoming the positional shift of the moving contact caused by the overall twisting of the slider module in the prior art, avoiding changes in the relative position between the moving contact and the stationary contact, ensuring the effective contact area between the contact and the stationary contact, and thus ensuring the energizing stability of the relay. Attached Figure Description

[0021] Figure 1 This is a perspective view of an embodiment of the relay according to the present invention;

[0022] Figure 2 This is a longitudinal sectional view of a relay embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of a relay embodiment of the present invention;

[0024] Figure 4 A first exploded view of a relay embodiment of this utility model;

[0025] Figure 5 This is a second exploded view of a relay embodiment of the present invention;

[0026] Figure 6 This is a diagram showing the combination of the push rod and slider module in one embodiment of the relay of this utility model.

[0027] The meanings of the reference numerals in the attached figures are as follows:

[0028] 1. Base assembly; 11. Base; 111. Slide groove; 112. Insertion hole; 113. Mounting slot; 114. Input hole; 115. Adhesive penetration hole; 12. Insertion plate; 121. Stationary contact; 122. Electrode; 13. Arc extinguishing magnet; 2. On / off assembly; 21. Push rod; 211. Protruding edge; 212. Moving iron core; 22. Conductive sheet; 221. Moving contact; 222. Protrusion; 23. Slider module; 231. Slide base; 2310. Receiving groove; 2311. Guide post; 2312. Slot; 2313. Carding platform; 2314. Carding slot; 232. Limiting bracket; 2321. Limiting hole; 2322. Insert rod; 2323. Carding hole; 24. Elastic element; 25. Electromagnetic module; 251. Coil frame; 252. Coil; 253. U-shaped part; 254. Pin; 255. Fixed iron core; 256. Permanent magnet; 257. Cover; 3. Housing. Detailed Implementation

[0029] To better understand and implement this invention, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0031] It should be noted that the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "positive", and "negative" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not mean that the device or component 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 utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0033] according to Figures 1 to 4 As shown, this utility model provides a relay, including: a switching component 2 and a base component 1.

[0034] Specifically, the on / off assembly 2 includes an electromagnetic module 25, a push rod 21 that can extend and retract relative to the electromagnetic module 25, a slider module 23, and a moving contact 221 disposed on the slider module 23. The slider module 23 is provided with a guide post 2311, and one end of the push rod 21 is connected to the slider module 23. The base assembly 1 includes a base 11 and a stationary contact 121 disposed on the base 11. The base 11 is provided with a groove 111 extending axially along the push rod 21.

[0035] The slider module 23 slides along the axial direction of the push rod 21 through the guide post 2311 and the slide groove 111. The push rod 21 can drive the slider module 23 under the magnetic force of the electromagnetic module 25, so that the moving contact 221 contacts or separates from the stationary contact 121. Specifically, the push rod 21 extends out of the electromagnetic module 25 under the positive magnetic force of the electromagnetic module 25 and pushes the slider module 23, so that the moving contact 221 contacts the stationary contact 121. The push rod 21 retracts from the electromagnetic module 25 under the reverse magnetic force of the electromagnetic module 25 and drives the slider module 23 to reset, so that the moving contact 221 separates from the stationary contact 121.

[0036] With the above settings, the slider module 23 will not twist during the sliding process of the push rod 21 with the slider module 23 relative to the base 11. This overcomes the positional shift of the moving contact 221 caused by the overall twisting of the slider module 23 in the prior art, avoids changing the relative position between the moving contact 221 and the stationary contact 121, ensures the effective contact area between the moving contact 221 and the stationary contact 121, and thus ensures the energizing stability of the relay.

[0037] Furthermore, the slider module 23 includes a conductive sheet 22, a slide block 231, a limiting bracket 232 disposed on the slide block 231, and an elastic element 24. A guide post 2311 is disposed on the side of the slide block 231 facing the base 11. Optionally, guide posts 2311 can be disposed on opposite sides of the slide block 231, so that the orientation of the slide block 231 does not need to be distinguished during assembly of the relay. The conductive sheet 22 is slidably disposed on the limiting bracket 232, and the moving contact 221 is disposed on the conductive sheet 22. The slide block 231 is provided with a receiving groove 2310 opening towards the conductive sheet 22. One end of the elastic element 24 is disposed within the receiving groove 2310. The other end of component 24 is connected to conductive sheet 22. Since the length of the slide groove 111 is greater than the distance between the moving contact 221 and the stationary contact 121 in the separated state, after the moving contact 221 contacts the stationary contact 121, the push rod 21 can continue to push the slide 231 and the limiting bracket 232, so that the conductive sheet 22 and the slide 231 and the limiting bracket 232 are relatively displaced, thereby reducing the space between the conductive sheet 22 and the slide 231, so that the elastic component 24 is compressed, thereby providing pressure to press the conductive sheet 22, that is, forming overtravel pressure, making the contact between the moving contact 221 and the stationary contact 121 more stable, and ensuring the stability of the power supply.

[0038] More specifically, the conductive sheet 22 is provided with a protrusion 222 on the side facing the limiting bracket 232, and the limiting bracket 232 is provided with a limiting hole 2321. The protrusion 222 is slidably inserted into the limiting hole 2321 along the axial direction of the push rod 21 to limit the sliding of the conductive sheet 22 along the radial direction of the push rod 21. The protrusion 222 can be set at the center of the conductive sheet 22 facing the stationary contact 121, and the transverse direction of the conductive sheet 22 is the length direction of the conductive sheet 22. The height of the protrusion 222 is greater than the length of the elastic element 24 that is compressed, so as to ensure that the protrusion 222 will not disengage from the limiting hole 2321 during the overtravel process.

[0039] Furthermore, the inner side of the limiting bracket 232 abuts against the side of the conductive sheet 22 in a direction perpendicular to the axial direction of the push rod 21, thereby limiting the conductive sheet 22 in the width direction so that the conductive sheet 22 cannot rotate circumferentially relative to the limiting bracket 232.

[0040] In addition, the slide 231 is made of insulating material to insulate the electromagnetic module 25 from the conductive sheet 22, thereby ensuring the normal operation of the relay. Specifically, the slide 231 can be made of one or a combination of two or more insulating materials such as plastic, rubber, and bakelite, as long as it meets the insulation purpose to be achieved by the slide 231 of this utility model.

[0041] like Figure 5 As shown, in practical applications, the bottom end of the slide 231 is provided with a slot 2314. The slot 2314 opens to one side facing the slide 231, and the opening direction of the slot 2314 intersects with the extension direction of the guide post 2311. One end of the push rod 21 is provided with a protruding edge 211 that cooperates with the slot 2314. The protruding edge 211 is installed in the slot 2314 from the outside to the inside along the extension direction of the slot 2314. Preferably, the opening direction of the slot 2314 is perpendicular to the extension direction of the guide post 2311, thereby completely eliminating the force of the push rod 21 along the extension direction of the guide post 2311 during use, and ensuring that the push rod 21 is stably installed in the slot 2314.

[0042] Preferably, the slide 231 is provided with a slot 2312, and the limiting bracket 232 is provided with a rod 2322 corresponding to the slot 2312. The limiting bracket 232 is inserted into the slot 2312 through the rod 2322 and is set on the slide 231. Optionally, the slide 231 is provided with a locking platform 2313, and the limiting bracket 232 is provided with a locking hole 2323 corresponding to the locking platform 2313. The limiting bracket 232 is set on the slide 231 by elastic deformation so that the locking hole 2323 is fastened to the locking platform 2313, thereby forming a detachable connection structure between the limiting bracket 232 and the slide 231 for easy and quick assembly and disassembly.

[0043] As an optional solution, the electromagnetic module 25 includes a coil 252, a coil frame 251, and a ring yoke. The coil frame 251 has a through hollow cavity. A movable iron core 212 is fixed to the other end of the push rod 21. The movable iron core 212 slides in the hollow cavity of the coil frame 251. Two sets of coils 252 are installed on the coil frame 251, spaced apart and connected in series along the axial direction of the push rod 21. The ring yoke is sleeved on the outside of the coil frame 251 to enclose the magnetic flux of the coils 252. For ease of installation, the ring yoke includes a U-shaped part 253 and a cover 257. For better magnetic conduction, two fixed iron cores 255 are provided on the ring yoke. One fixed iron core 255 is fixed to the U-shaped part 253, and the other fixed iron core 255 is fixed to the cover 257. The two fixed iron cores 255 are respectively arranged at both ends of the hollow cavity of the coil frame 251. The fixed iron cores 255 can contact the movable iron core 212 to achieve magnetic conduction, and also have a limiting push rod. The function of the sliding stroke of rod 21; a permanent magnet 256 is provided on the coil frame 251. In the axial direction along the push rod 21, the permanent magnet 256 is located between the two sets of coils 252. In the axial direction perpendicular to the push rod 21, the permanent magnet 256 is also located between the moving iron core 212 and the U-shaped part 253. Based on the central position of the permanent magnet 256, the permanent magnet 256 will generate two permanent magnet circuits with opposite directions arranged in the axial direction along the push rod 21. This is used to maintain the contact state or separation state of the moving contact 221 and the stationary contact 121 when the coil is de-energized. In this scheme, it is preferable to have two permanent magnets 256. The two permanent magnets 256 are arranged opposite to each other on the transverse sides of the moving iron core 212. The ring yoke also has the function of sealing the magnetic flux of the permanent magnet 256. Of course, the number of permanent magnets 256 can also be one, as long as it can provide a permanent magnet circuit for magnetic holding of the moving iron core 212.

[0044] See Figure 3 and with Figure 3 The directions shown are for reference only. The specific operating process is as follows:

[0045] by Figure 3The state shown is the initial state. At this time, the moving contact 221 is separated from the stationary contact 121, and the moving iron core 212 is in contact with the lower fixed iron core 255, which closes the lower permanent magnet circuit of the permanent magnet 256. This keeps the moving iron core 212 attracted to the lower fixed iron core 255, thus maintaining the contact separation state. When a positive current is applied to the coil 252, the coil 252 generates a first electromagnetic circuit in the opposite direction to the lower permanent magnet circuit. The magnetic flux of the first electromagnetic circuit is greater than that of the lower permanent magnet circuit. The first electromagnetic circuit can cancel the lower permanent magnet circuit and drive the moving iron core 212 to slide upward, so that the moving iron core 212 enters the upper space of the hollow cavity of the coil frame 251 until the moving iron core 212 contacts the upper fixed iron core 255. When the contacts are engaged, the upper permanent magnet circuit of the permanent magnet 256 is closed. After the coil 252 is de-energized, the moving iron core 212 will remain attracted to the fixed iron core 255 above under the magnetic force of the upper permanent magnet circuit, thus maintaining the contact state. When it is necessary to separate the contacts, a reverse current is supplied to the coil 252, so that the coil 252 generates a second electromagnetic circuit opposite to the direction of the upper permanent magnet circuit. The magnetic flux of the second electromagnetic circuit is also greater than that of the upper permanent magnet circuit. The second electromagnetic circuit can cancel the upper permanent magnet circuit and drive the moving iron core 212 to slide downward, so that the moving iron core 212 enters the lower space of the hollow cavity of the coil frame 251 and is attracted to the fixed iron core 255 below, thus restoring the contact separation state.

[0046] In addition, the base assembly 1 also includes a plug plate 12, which is disposed on the base 11. One end of the plug plate 12 is located inside the base 11 and the other end is located outside the base 11. A stationary contact 121 is disposed at one end of the plug plate 12, and an electrode 122 is disposed at the other end of the plug plate 12 for output. A plug hole 112 is disposed on the base 11 corresponding to the plug plate 12. The plug plate 12 is plugged into the plug hole 112 so that one end of the plug plate 12 is located inside the base 11 and the other end is located outside the base 11.

[0047] In practice, this relay also includes: a housing 3, which cooperates with the base 11 to form an installation space, and the switching component 2 is disposed within the installation space; and the base module 1 also includes an arc-extinguishing magnet 13, with a mounting groove 113 provided between the moving contact 221 and the stationary contact 121 on the base 11, and the arc-extinguishing magnet 13 disposed within the mounting groove 113 to provide magnetic force for extinguishing the arc between the moving contact 221 and the stationary contact 121, preventing the generation of an electric arc when the moving contact 221 and the stationary contact 121 separate, thus burning the moving contact 221 and the stationary contact 121, achieving the arc-extinguishing function, and ensuring the normal service life of the relay; furthermore, the base 11 is also provided with an adhesive penetration hole 115 communicating with the installation space, which is used to penetrate adhesive, thereby strengthening and fixing the components within the installation space, and playing a role in directional adhesive penetration.

[0048] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Although optional embodiments of this utility model have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including optional embodiments as well as all changes and modifications falling within the scope of this utility model.

[0049] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0050] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A relay, characterized by The utility model relates to a kind of switch assembly, including: On-off component (2), including electromagnetic module (25), push rod (21) that can be relative to the electromagnetic module (25) telescopic, slider module (23), movable contact (221) is arranged on the slider module (23), the slider module (23) is provided with guide column (2311), one end of the push rod (21) is connected with the slider module (23); Base assembly (1), including base (11), static contact (121) is arranged on the base (11), the base (11) is provided with sliding groove (111) extending along the axial direction of the push rod (21); The slider module (23) is cooperated with the sliding groove (111) by the guide column (2311) and slides along the axial direction of the push rod (21), the push rod (21) can drive the slider module (23) under the magnetic force of the electromagnetic module (25), so that the movable contact (221) is contacted or separated from the static contact (121).

2. The relay according to claim 1, characterized in that The slider module (23) includes conducting sheet (22), sliding seat (231), limit support (232) arranged on the sliding seat (231), elastic member (24), the guide column (2311) is arranged on the side of the sliding seat (231) towards the base (11), the conducting sheet (22) is slidably arranged in the limit support (232), the movable contact (221) is arranged on the conducting sheet (22), the sliding seat (231) is provided with accommodating groove (2310) opening towards the conducting sheet (22), one end of the elastic member (24) is arranged in the accommodating groove (2310), the other end of the elastic member (24) is connected with the conducting sheet (22).

3. The relay according to claim 2, characterized in that The conducting sheet (22) is provided with convex point (222) on the side towards the limit support (232), the limit support (232) is provided with limit hole (2321), the convex point (222) is inserted in the limit hole (2321) and slides along the axial direction of the push rod (21), so as to limit the sliding of the conducting sheet (22) along the radial direction of the push rod (21).

4. The relay of claim 2, wherein The inner side of the limit support (232) is abutted to the side of the conducting sheet (22) along the direction perpendicular to the axial direction of the push rod (21), so as to limit the circumferential rotation of the conducting sheet (22).

5. The relay of claim 2, wherein The bottom end of the sliding seat (231) is provided with clamping groove (2314), the clamping groove (2314) is opened towards the side of the sliding seat (231), and the opening direction of the clamping groove (2314) intersects with the extension direction of the guide column (2311), one end of the push rod (21) is provided with convex edge (211) matched with the clamping groove (2314), the convex edge (211) is installed in the clamping groove (2314) from outside to inside along the extension direction of the clamping groove (2314).

6. The relay of claim 5, wherein The opening direction of the clamping groove (2314) intersects perpendicularly with the extension direction of the guide column (2311).

7. The relay of claim 2, wherein The material of the sliding seat (231) is set as insulating material.

8. The relay of claim 2, wherein The sliding seat (231) is provided with a slot (2312), the limiting support (232) is provided with a plug rod (2322) corresponding to the slot (2312), and the limiting support (232) is arranged on the sliding seat (231) by being plugged into the slot (2312) through the plug rod (2322).

9. The relay of claim 2, wherein The sliding seat (231) is provided with a clamping table (2313), the limiting support (232) is provided with a clamping hole (2323) corresponding to the clamping table (2313), and the limiting support (232) is arranged on the sliding seat (231) by being buckled to the clamping table (2313) through elastic deformation of the clamping hole (2323).

10. The relay according to any one of claims 1 to 9, characterized in that The base assembly (1) further comprises an arc extinguishing magnet (13), the base (11) is provided with a mounting groove (113) corresponding to the dynamic contact (221) and the static contact (121), and the arc extinguishing magnet (13) is arranged in the mounting groove (113) to provide a magnetic force for extinguishing arc between the dynamic contact (221) and the static contact (121).

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