Relay

Abstract

The utility model discloses a relay comprising a housing, the inner wall of which is provided with a first retaining wall; the framework is arranged in the shell; the driving system is arranged on the framework and comprises a coil, a yoke, an armature and an isolation frame, a second retaining wall is arranged on the isolation frame, and the second retaining wall and the first retaining wall are arranged in parallel in the X direction; the contact system is arranged on the framework and comprises a movable spring module and a static spring module which can be mutually attracted or disconnected along the Z direction; wherein the second retaining wall and the first retaining wall are arranged between the first end pin and the second end pin. According to the relay provided by the utility model, the first retaining wall and the second retaining wall are blocked between the first end pin of the coil and the second end pin of the movable contact spring, so that the creepage distance between the first end pin and the second end pin is increased, and the voltage resistance and the use safety of the whole relay are further improved.

Description

Technical Field

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

[0002] A relay is an automatic switching element that uses electromagnetic force to drive the movement of mechanical parts. It generally includes a base and a magnetic circuit part, a moving contact group and a stationary contact group set on the base. When the magnetic part is energized, it generates electromagnetic force to drive the moving contact group and the stationary contact group to close or open.

[0003] With the miniaturization of electromagnetic relays, electromagnetic relays need to meet the requirements of small size while also having high power characteristics. The distance between the coil and the yoke will be very close, resulting in a short creepage distance between them, which poses a risk of breakdown and poor safety performance. Utility Model Content

[0004] To address at least one problem existing in the prior art, according to one aspect of the present invention, a relay is provided, comprising:

[0005] The outer casing, wherein a first baffle is provided on the inner wall of the outer casing;

[0006] A skeleton is disposed within the outer shell;

[0007] A drive system is provided on the frame. The drive system includes a coil, a yoke, an armature, and an isolation frame. The coil is wound on the frame and has a first end. The isolation frame is provided between the frame and the yoke. The armature is oscillating relative to the yoke. The isolation frame is provided with a second barrier wall. The second barrier wall and the first barrier wall are arranged side by side along the X direction.

[0008] A contact system, disposed on the frame, includes a moving spring module and a stationary spring module capable of engaging or disengaging with each other along the Z direction. The moving spring module is mounted on the yoke and includes a moving spring sheet and a moving contact disposed on the moving spring sheet. The moving spring sheet has a second end foot. The stationary spring module is mounted on the frame and includes a stationary spring sheet and a stationary contact disposed on the stationary spring sheet.

[0009] The second retaining wall and the first retaining wall are located between the first end foot and the second end foot.

[0010] In some embodiments, the frame includes a first mounting portion, a connecting portion, and a second mounting portion along the Z direction. The connecting portion connects the first mounting portion and the second mounting portion. The coil is wound around the connecting portion. The stationary spring is mounted on the second mounting portion. A third baffle is provided at the end of the first mounting portion away from the coil. And / or a fourth baffle is provided at the end of the isolation frame away from the second mounting portion. The third baffle and the fourth baffle are located on the side of the yoke along the Y direction.

[0011] In some embodiments, the first mounting part is provided with the third retaining wall and the isolation frame is provided with the fourth retaining wall, and the third retaining wall and the fourth retaining wall are connected end to end.

[0012] In some embodiments, the movable reed includes a first connecting portion, a second connecting portion, and a locking portion. The first connecting portion and the second connecting portion are arranged at an angle, and the locking portion is arranged at an angle to the first connecting portion. The first connecting portion is connected to the yoke, the second connecting portion is used to install the movable contact and is connected to the armature, and the yoke is provided with a locking block. The locking portion is locked onto the locking block.

[0013] In some embodiments, the locking part is provided with a locking hole, and the locking block passes through the locking hole and is locked onto the hole wall.

[0014] In some embodiments, the first retaining wall is disposed between the frame and the second retaining wall along the X direction.

[0015] In some embodiments, the contact system includes two stationary spring modules, namely a first stationary spring module and a second stationary spring module. The first stationary spring module includes a first stationary spring sheet and a normally open stationary contact disposed on the stationary spring sheet. The second stationary spring module includes a second stationary spring sheet and a normally closed stationary contact disposed on the stationary spring sheet.

[0016] The frame has a fifth retaining wall on at least one side along the Y direction. The fifth retaining wall is located between the first static spring and the second static spring, and along the Z direction, the projection of the fifth retaining wall on the reference plane does not intersect with the projections of the first static spring and the second static spring on the reference plane.

[0017] In some embodiments, the frame is provided with slots, and the first stationary spring and the second stationary spring are respectively engaged in the slots.

[0018] In some embodiments, mounting structures are provided on opposite side walls of the frame along the Y direction, and the mounting structure and the frame form the slot, with the fifth retaining wall connected to the mounting structure; or the fifth retaining wall and the frame form the slot.

[0019] In some embodiments, the mounting structure includes connecting ribs and supporting ribs disposed on the connecting ribs, the fifth retaining wall is connected to the connecting ribs, and the supporting ribs and the fifth retaining wall are arranged in parallel and separated, the connecting ribs, the supporting ribs and the frame together enclosing the slot.

[0020] In summary, the relay provided by this utility model has the following technical effects:

[0021] By setting an isolation frame between the coil and the yoke, the creepage distance between the coil and the yoke can be increased, effectively preventing voltage breakdown of the air distance between the coil and the yoke, and improving the withstand voltage value and withstand performance of the relay. Furthermore, a first barrier wall is set on the housing, and a second barrier wall is set on the isolation frame. The first and second barrier walls, set in parallel, block the creepage distance between the first and second pins of the coil and the second pin of the moving spring, further improving the withstand voltage and safety of the entire relay. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the relay according to an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 Left view of the relay in the image;

[0024] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0025] Figure 4 for Figure 1 A structural diagram of the relay hidden in its casing from one perspective;

[0026] Figure 5 for Figure 4 An exploded view of the relay after it has been concealed in its casing;

[0027] Figure 6 for Figure 1 A structural diagram of the relay hidden in its casing from another perspective;

[0028] Figure 7 for Figure 6 An explosion diagram showing the relay hidden in its casing;

[0029] Figure 8 for Figure 1 A schematic diagram of the outer shell structure;

[0030] Figure 9 for Figure 4 A schematic diagram of the skeleton structure in the image.

[0031] Attached Figures: 100-Relay, 10-Housing, 11-First retaining wall, 20-Frame, 21-First mounting part, 211-Third retaining wall, 22-Ring, 23-Second mounting part, 24-Slot, 25-Fifth retaining wall, 26-Mounting structure, 261-Connecting rib, 262-Supporting rib, 30-Drive system, 31-Coil, 311-First end, 32-Yoke, 321-Third mounting part, 322-Fourth mounting part. 323-Card block, 33-Armature, 34-Isolation frame, 341-Second barrier, 342-Fourth barrier, 40-Contact system, 41-Moving spring module, 411-Moving spring, 4111-Second end foot, 4112-First connecting part, 4113-Second connecting part, 4114-Card setting part, 4115-Card hole, 412-Moving contact, 42-Stationary spring module, 421-Stationary spring, 422-Stationary contact, 423-Third end foot. Detailed Implementation

[0032] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] 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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] Please see Figures 1 to 9 The relay 100 provided in this embodiment of the present utility model includes a housing 10, a frame 20, a drive system 30, and a contact system 40.

[0037] The outer casing 10 has a first baffle 11 on its inner wall; a frame 20 is located inside the outer casing 10; a drive system 30 is located on the frame 20, and the drive system 30 includes a coil 31, a yoke 32, an armature 33, and an isolation frame 34. The coil 31 is wound on the frame 20 and has a first end 311. The isolation frame 34 is located between the frame 20 and the yoke 32. The armature 33 is oscillating relative to the yoke 32. A second baffle 341 is provided on the isolation frame 34. The second baffle 341 and the first baffle 11 are arranged side by side along the X direction 11. The contact system 40 is mounted on the frame 20 and includes a moving spring module 41 and a stationary spring module 42 that can be attracted or disconnected from each other along the Z direction. The moving spring module 41 is mounted on the yoke 32 and includes a moving spring plate 411 and a moving contact 412 provided on the moving spring plate 411. The moving spring plate 411 has a second end foot 4111. The stationary spring module 42 is mounted on the frame 20 and includes a stationary spring plate 421 and a stationary contact 422 provided on the stationary spring plate 421. The second baffle 341 and the first baffle 11 are located between the first end foot 311 and the second end foot 4111.

[0038] The relay 100 described above, by providing an isolation frame 34 between the coil 31 and the yoke 32, can increase the creepage distance between the coil 31 and the yoke 32, effectively preventing voltage breakdown of the air distance between the coil 31 and the yoke 32, and improving the withstand voltage value and withstand performance of the relay 100; furthermore, a first baffle 11 is provided on the housing 10, and a second baffle 341 is provided on the isolation frame 34. The first baffle 11 and the second baffle 341, which are arranged in parallel, block the first end 311 of the coil 31 and the second end 4111 of the moving spring 411, increasing the creepage distance between the first end 311 and the second end 4111, further improving the withstand voltage and safety of the entire relay 100.

[0039] Understandably, please refer to Figure 1 , Figure 2 8. The housing 10 has an opening, from which the first end pin 311 and the second end pin 4111 are exposed to enable electrical connection with a power source or load.

[0040] Please see Figure 9 The frame 20 includes a first mounting part 21, a rod part 22 and a second mounting part 23. The rod part 22 is connected between the first mounting part 21 and the second mounting part 23. The coil 31 is wound around the rod part 22. The rod part 22 is perpendicular to the first mounting part 21 and the second mounting part 23 respectively. The stationary spring 421 is mounted on the second mounting part 23. The yoke 32 is mounted on the isolation frame 34 and the first mounting part 21.

[0041] When installing the yoke 32, a third baffle 211 is provided at the end of the first mounting part 21 away from the coil 31, and / or a fourth baffle 342 is provided at the end of the isolation frame 34 away from the second mounting part 23. The third baffle 211 and the fourth baffle 342 are provided on the side of the yoke 32 along the Y direction. In this way, by providing the third baffle 342 on the first mounting part 21 and / or the fourth baffle 342 on the isolation frame 34, the third baffle 211 and / or the fourth baffle 342 block the creepage distance between the yoke 32 and the coil 31, making it less likely to be broken down by voltage. Furthermore, by providing the third baffle 211 and / or the fourth baffle 342, the installation of the yoke 32 can be positioned and guided.

[0042] In some embodiments, along the Y direction, a third baffle 211 is provided on both sides of the yoke 32 in the width direction, or a fourth baffle 342 is provided on both sides of the yoke 32 in the width direction, or both sides of the yoke 32 in the width direction have a third baffle 211 and a fourth baffle 342, thereby guiding the installation of the yoke 32 through the third baffle 211 and the fourth baffle on both sides, while increasing the creepage distance between the yoke 32 and the coil 31 on both sides of the width direction of the yoke 32, further increasing the safety of use.

[0043] Specifically, in this embodiment, the first mounting part 21 is provided with a third baffle 211 and the isolation frame 34 is provided with a fourth baffle 342. The third baffle 211 and the fourth baffle 342 are connected end to end. Thus, the third baffle 211 and the fourth baffle 342 are jointly arranged on one side of the width direction of the yoke 32, blocking the side of the yoke 32 and increasing the creepage distance between each side of the yoke 32 and the coil 31. At the same time, the cooperation of the third baffle 211 and the fourth baffle 342 guides the installation of the yoke 32.

[0044] For ease of description, the extension direction of the rod 22, that is, the axial direction of the coil 31, is defined as the Z direction, the width direction of the yoke 32 is defined as the Y direction, the length direction of the third retaining wall 211 and the fourth retaining wall 342 is defined as the X direction, and the length direction of the first retaining wall and the second retaining wall in this embodiment is both the Z direction.

[0045] Furthermore, in this embodiment, to facilitate the molding of the isolation frame 34, the fourth barrier wall 342 and the second barrier wall 341 are connected end to end, that is, the fourth barrier wall 342 and the second barrier wall 341 are integrally set, which not only improves the structural strength of the entire isolation frame 34, but also facilitates the injection molding of the isolation frame 34.

[0046] In the arrangement of the first retaining wall 11 and the second retaining wall 341, along the X direction, the first retaining wall 11 is positioned between the frame 20 and the second retaining wall 341. Since the side of the isolation frame 34 facing away from the frame 20 is used to install the yoke 32 and the moving spring 411, placing the first retaining wall 11 between the frame 20 and the isolation frame 34 allows for efficient use of the installation space between them. Specifically, there is an installation gap between the isolation frame 34 and the frame 20, and the first retaining wall 11 is positioned within this gap. Furthermore, during the assembly of the relay 100, there is a gap between the first retaining wall 11 and the second retaining wall 341, facilitating the assembly between the housing 10 and the drive system 30.

[0047] Please refer to Figures 4 to 7 In this embodiment, the yoke 32 includes a third mounting part 321 and a fourth mounting part 322 arranged at approximately a 90-degree angle. The third mounting part 321 is mounted on the first mounting part 21, and the movable spring 411 is mounted on the second mounting part 23.

[0048] Please see Figure 4 , Figure 5 as well as Figure 7 In this embodiment, the movable spring 411 includes a first connecting portion 4112, a second connecting portion 4113, and a locking portion 4114 during installation. The first connecting portion 4112 and the second connecting portion 4113 are arranged at an angle, and the locking portion 4114 and the first connecting portion 4112 are also arranged at an angle. The first connecting portion 4112 is connected to the yoke 32, and the second connecting portion 4113 is used to install the movable contact 412 and is connected to the armature 33. The yoke 32 is provided with a locking block 323, and the locking part 4114 is locked onto the locking block 323. That is, in the Y direction, at least one side of the yoke 32 is provided with a locking block 323, that is, at least one side of the width direction of the fourth mounting part 322 is provided with a locking block 323, so as to lock the movable spring 411 onto the yoke 32. The yoke 32 and the movable spring 411 are not only riveted together, but also provided with a locking block 323, which increases the connection strength between the yoke 32 and the movable spring 411.

[0049] Specifically, in this embodiment, there are locking blocks 323 on both sides of the yoke 32 along the Y direction, and there are locking parts 4114 on both sides of the first connecting part 4112 of the moving spring 411 along the Y direction, with one locking part 4114 corresponding to one locking block 323.

[0050] In this embodiment, the locking part 4114 and the first connecting part 4112 are approximately at a 90-degree angle. The locking part 4114 is provided with a locking hole 4115. The locking block 323 passes through the locking hole 4115 and is locked onto the hole wall of the locking hole 4115. Thus, when the movable spring 411 and the yoke 32 are installed, it is equivalent to hanging the locking part 4114 on the locking block 323, which facilitates the installation between the movable spring 411 and the yoke 32.

[0051] Please see Figure 6 and Figure 7 The contact system 40 in this embodiment includes two stationary spring modules 42, namely a first stationary spring module a and a second stationary spring module b. The first stationary spring module a includes a first stationary spring a1 and a normally open stationary contact a2 disposed on the first stationary spring a1. The second stationary spring module b includes a second stationary spring b1 and a normally closed stationary contact b2 disposed on the second stationary spring b1. The first stationary spring a1 and the second stationary spring b1 each have a third end 423a and a third end 423b. The frame 20 has a fifth baffle 25 on at least one side along the Y direction. The fifth baffle 25 is located between the first stationary spring a1 and the first stationary spring b1. Along the Z direction, the projection of the fifth baffle 25 on the reference plane does not intersect with the projections of the first stationary spring a1 and the second stationary spring b1 on the reference plane. That is, by setting the fifth baffle 25 between the first stationary spring a1 and the second stationary spring b1, the creepage distance between the first stationary spring a1 and the second stationary spring b1 is increased, and the withstand voltage performance is improved.

[0052] Understandably, each of the two opposite sides of the moving reed 411 along the Z direction is provided with a moving contact 412, thereby realizing the closing or opening with the normally open stationary contact a2 or the normally closed stationary contact b2 respectively.

[0053] Specifically, when installing the first stationary spring a1 and the second stationary spring b2, the frame 20 is provided with a slot 24, and the first stationary spring a1 and the second stationary spring b1 are respectively locked in the slot 24. In this way, the first stationary spring a1 and the second stationary spring b1 can be quickly positioned and installed through the setting of the slot 24.

[0054] In this embodiment, when forming the slot 24, mounting structures 26 are provided on both opposite side walls of the frame 20 along the Y direction. The slot 24 is formed between the mounting structures 26 and the frame 20, and the fifth retaining wall 25 is connected to the mounting structure 26; or the slot 24 is formed between the fifth retaining wall 25 and the frame 20. Thus, by providing the mounting structure 26, a slot 24 can be formed with the frame 20, ensuring the installation strength of each stationary spring 421. In other embodiments, slots can be cut into the side walls of the frame 20 to form the slot 24, and a blocking structure 26 can be provided on the inner wall of the frame 20, which can also achieve the installation of the stationary spring 421.

[0055] Specifically, the installation structure 26 includes a connecting rib 261 and a supporting rib 262 disposed on the connecting rib 261. The fifth retaining wall 25 is connected to the connecting rib 261, and the supporting rib 262 and the fifth retaining wall 25 are arranged in parallel and separated. The connecting rib 261, the supporting rib 262 and the frame 20 together form a slot 24.

[0056] In this embodiment, the second stationary spring b1 spans the support ribs 262 on both sides; the first stationary spring a1 is engaged between the fifth retaining wall 25 and the frame 20.

[0057] The relay 100 described above, by providing a third baffle 211 at the end of the first mounting portion 21 away from the coil 31, and / or providing a fourth baffle 342 at the end of the isolation frame 34 away from the second mounting portion 23, with the third baffle 211 and the fourth baffle 342 located along the Y direction on at least one side of the width direction of the yoke 32, not only increases the creepage distance between the yoke 32 and the coil 31, making it less susceptible to voltage breakdown, but also provides guidance for the installation of the yoke 32; by providing a locking block 323 on the yoke 32, and the moving spring 411 including a locking part 4114, which is locked onto the locking block 323, the yoke 32 and the moving spring 411 are not only riveted together but also have a locking block 323, increasing the connection strength between the yoke 32 and the moving spring 411; by providing a fifth baffle 25 on the frame 20, the creepage distance between the first moving spring a1 and the second moving spring b1 is increased, improving the overall voltage withstand capability of the relay 100. Thus, the entire relay 100 has stronger voltage resistance and safety performance.

[0058] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A relay (100), characterized in that, include: The outer shell (10) has a first baffle (11) on its inner wall; A frame (20) is disposed inside the outer shell (10); A drive system (30) is provided on the frame (20). The drive system (30) includes a coil (31), a yoke (32), an armature (33), and an isolation frame (34). The coil (31) is wound on the frame (20) and has a first end (311). The isolation frame (34) is provided between the frame (20) and the yoke (32). The armature (33) is oscillating relative to the yoke (32). The isolation frame (34) is provided with a second barrier (341). The second barrier (341) and the first barrier (11) are arranged side by side along the X direction. A contact system (40) is provided on the frame (20) and includes a moving spring module (41) and a stationary spring module (42) that can attract or disconnect each other along the Z direction. The moving spring module (41) is mounted on the yoke (32) and includes a moving spring plate (411) and a moving contact (412) provided on the moving spring plate (411). The moving spring plate (411) has a second end foot (4111). The stationary spring module (42) is mounted on the frame (20) and includes a stationary spring plate (421) and a stationary contact (422) provided on the stationary spring plate (421). The second retaining wall (341) and the first retaining wall (11) are located between the first end foot (311) and the second end foot (4111); The frame (20) includes a first mounting part (21), a rod part (22) and a second mounting part (23) along the Z direction. The rod part (22) is connected between the first mounting part (21) and the second mounting part (23). The coil (31) is wound around the rod part (22). The stationary spring (421) is mounted on the second mounting part (23). The first mounting part (21) is provided with a third baffle (211) at one end away from the coil (31), and / or the isolation frame (34) is provided with a fourth baffle (342) at one end away from the second mounting part (23). The third baffle (211) and the fourth baffle (342) are provided on the side of the yoke (32) along the Y direction.

2. The relay (100) according to claim 1, characterized in that, The first installation part (21) is provided with the third retaining wall (211) and the isolation frame (34) is provided with the fourth retaining wall (342), the third retaining wall (211) and the fourth retaining wall (342) are connected end to end.

3. The relay (100) according to claim 1 or 2, characterized in that, The movable spring (411) includes a first connecting part (4112), a second connecting part (4113), and a locking part (4114). The first connecting part (4112) and the second connecting part (4113) are arranged at an angle, and the locking part (4114) and the first connecting part (4112) are arranged at an angle. The first connecting part (4112) is connected to the yoke (32). The second connecting part (4113) is used to install the movable contact (412) and is connected to the armature (33). The yoke (32) is provided with a locking block (323), and the locking part (4114) is locked onto the locking block (323).

4. The relay (100) according to claim 3, characterized in that, The locking part (4114) is provided with a locking hole (4115), and the locking block (323) passes through the locking hole (4115) and is locked on the hole wall of the locking hole (4115).

5. The relay (100) according to claim 1 or 2, characterized in that, Along the X direction, the first retaining wall (11) is located between the frame (20) and the second retaining wall (341).

6. The relay (100) according to claim 1 or 2, characterized in that, The contact system (40) includes two stationary spring modules (42), namely a first stationary spring module and a second stationary spring module. The first stationary spring module includes a first stationary spring sheet and a normally open stationary contact disposed on the first stationary spring sheet. The second stationary spring module includes a second stationary spring sheet and a normally closed stationary contact disposed on the second stationary spring sheet. The frame (20) has a fifth retaining wall (25) on at least one side along the Y direction. The fifth retaining wall (25) is located between the first stationary spring and the second stationary spring, and along the Z direction, the projection of the fifth retaining wall (25) on the reference plane does not intersect with the projections of the first stationary spring and the second stationary spring on the reference plane.

7. The relay (100) according to claim 6, characterized in that, The frame (20) is provided with a slot (24), and the first static spring and the second static spring are respectively locked in the slot (24).

8. The relay (100) according to claim 7, characterized in that, The frame (20) is provided with mounting structures (26) on both opposite side walls along the Y direction. The mounting structure (26) and the frame (20) form the slot (24). The fifth retaining wall (25) is connected to the mounting structure (26); or the fifth retaining wall (25) and the frame (20) form the slot (24).

9. The relay (100) according to claim 8, characterized in that, The installation structure (26) includes a connecting rib (261) and a supporting rib (262) provided on the connecting rib (261). The fifth retaining wall (25) is connected to the connecting rib (261), and the supporting rib (262) and the fifth retaining wall (25) are arranged in parallel and separated. The connecting rib (261), the supporting rib (262) and the frame (20) together form the slot (24).

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