Direct-current solid-state relay

Abstract

The utility model discloses a direct-current solid-state relay which comprises a mounting plate, a relay shell is arranged on the upper end face of the mounting plate, a protective cover plate is arranged at the upper end of the relay shell, and two friction rotating shafts are symmetrically arranged on the two sides of the outer wall of the protective cover plate. The upper end of the mounting plate is provided with dismounting assemblies located on two sides of the relay shell, each dismounting assembly comprises two positioning seats, a fixing plate and guide plates, the two positioning seats are internally provided with the guide plates, and the relay shell is internally provided with two mounting grooves; the number of the fixing plates is two, the two fixing plates are fixedly installed in the installation groove, the upper end face of the relay shell is provided with an insertion groove, the four corners of the bottom of the protective cover plate are fixedly provided with insertion rods, and one ends of the insertion rods are connected to the insertion groove. The direct-current solid-state relay can be quickly disassembled and assembled, the installation tightness is improved, the relay is effectively protected, and the service life of the relay is prolonged.

Description

Technical Field

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

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches a specified requirement. Simply put, it's like an automatic switch that controls the opening and closing of a circuit based on a certain signal. The input quantity can be physical quantities such as voltage, current, temperature, or light intensity, while the output is the connection or disconnection of the circuit.

[0003] A patent with the existing industrial opening number CN212967536U discloses a DC solid-state relay. A nameplate is fixedly installed on the upper surface of the solid-state relay housing. A first terminal piece is fixedly installed on the upper surface of the solid-state relay housing near one end. A second terminal piece is fixedly installed on the upper surface of the solid-state relay housing on one side of the first terminal piece. A third terminal piece is fixedly installed on the upper surface of the solid-state relay housing on the other side of the first terminal piece. A fourth terminal piece is fixedly installed on the upper surface of the solid-state relay housing on one side of the second terminal piece.

[0004] Although the aforementioned DC solid-state relays can adapt to different application scenarios by adjusting the position of the fixing screw hole and the solid-state relay housing, they are not secure enough when fixing the solid-state relay to the mounting base, and disassembly and assembly are relatively troublesome. The above-mentioned fixing by rotating screws is relatively cumbersome, time-consuming and labor-intensive. In order to address the above problems, an improved and upgraded DC solid-state relay is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a DC solid-state relay to solve the problems mentioned in the background art.

[0006] To solve the above problems, the following technical solutions are provided:

[0007] Design a DC solid-state relay, including a mounting plate, a relay housing is provided on the upper surface of the mounting plate, a protective cover is provided on the upper end of the relay housing, two friction shafts are symmetrically arranged on both sides of the outer wall of the protective cover, and disassembly and assembly components are provided on both sides of the upper end of the mounting plate located on the relay housing. The disassembly and assembly components include positioning seats, fixing plates and guide plates. There are two positioning seats, and each positioning seat has a guide plate inside. There are two mounting slots inside the relay housing, and there are two fixing plates, and both fixing plates are fixedly installed inside the mounting slots.

[0008] Furthermore, a slot is provided on the upper surface of the relay housing, and a plug is fixedly provided at each of the four corners of the bottom of the protective cover, with one end of the plug connected to the slot.

[0009] Furthermore, both sets of friction shafts have snap-fit ​​plates rotatably mounted on their outer walls, with one end of the snap-fit ​​plate connected to the outer wall of the relay housing. A connecting rod is fixedly installed inside the positioning seat, and a guide plate is rotatably mounted on the outer wall of the connecting rod. A limit groove is formed inside the guide plate.

[0010] Furthermore, a threaded rod is provided inside the limiting groove, and a square cap is fixedly connected to one end of the threaded rod. The square cap is adapted to the size of the limiting groove.

[0011] Furthermore, the fixing plate has a slot inside, one end of the threaded rod is threaded into the slot, and the guide plate has a positioning pin inside, one end of which is engaged inside the fixing plate.

[0012] Furthermore, two mounting brackets are fixedly and symmetrically arranged on the upper surface of the positioning seat. The two mounting brackets are slidably connected with snap-fit ​​blocks inside, and push rods are fixedly connected to the upper ends of the snap-fit ​​blocks. One end of the snap-fit ​​block is snapped between the fixed plate and the mounting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model device includes components such as a positioning seat, a guide plate, a square cap, a threaded rod, a positioning pin, a snap-fit ​​block, and a mounting frame. By rotating the guide plate inside the positioning seat on the connecting rod, the threaded rod on the square cap connects with the slot on the fixing plate. When the square cap rotates and intersects with the mounting slot, the fixing plate is fixed by the positioning pin. Then, by manually pushing two push rods, the snap-fit ​​block moves inside the mounting frame, and vice versa. This facilitates disassembly and assembly of DC solid-state relays while improving their installation tightness. It is easy to operate, saves time and effort, and has a simple structure.

[0015] 2. The device of this utility model is equipped with components such as a protective cover plate, a plug rod, a friction shaft, and a snap-fit ​​plate. By using the plug rod to snap the protective cover plate into the slot on the relay housing, and then rotating the snap-fit ​​plate on the friction shaft to 90 degrees, the protective cover plate is stably installed on the relay housing. This helps to protect the relay, effectively preventing dust, debris, moisture, etc. from entering the relay, avoiding these foreign objects from affecting the normal operation of the relay, preventing the relay from causing poor contact, short circuits, and other faults, and extending the service life of the relay.

[0016] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a DC solid-state relay according to the present invention;

[0019] Figure 2 This is a schematic diagram of a partially disassembled DC solid-state relay according to the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the partial split structure;

[0021] Figure 4 for Figure 3 A magnified diagram of the partially disassembled structure.

[0022] In the diagram: 1. Mounting plate; 2. Relay housing; 3. Protective cover; 31. Insert rod; 32. Slot; 4. Friction shaft; 41. Snap-fit ​​plate; 5. Assembly / disassembly assembly; 51. Positioning seat; 511. Mounting bracket; 512. Push rod; 513. Snap-fit ​​block; 52. Fixing plate; 53. Connecting rod; 54. Guide plate; 55. Limiting groove; 56. Square cap; 57. Threaded rod; 58. Positioning pin; 59. Groove; 6. Mounting slot. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 - Figure 4As shown, this embodiment provides a DC solid-state relay, including a mounting plate 1. A relay housing 2 is provided on the upper surface of the mounting plate 1. A protective cover plate 3 is provided on the upper end of the relay housing 2. Two friction shafts 4 are symmetrically arranged on both sides of the outer wall of the protective cover plate 3. Disassembly and assembly components 5 are provided on both sides of the upper end of the mounting plate 1 located on the relay housing 2. The disassembly and assembly components 5 include positioning seats 51, fixing plates 52 and guide plates 54. There are two positioning seats 51, and each of the two positioning seats 51 is provided with a guide plate 54. Two mounting slots 6 are opened inside the relay housing 2. There are two fixing plates 52, and both fixing plates 52 are fixedly installed inside the mounting slots 6.

[0025] Preferably, a slot 32 is provided on the upper surface of the relay housing 2, and a plug rod 31 is fixedly provided at each of the four corners of the bottom of the protective cover plate 3, with one end of the plug rod 31 connected to the slot 32. The outer walls of the two sets of friction shafts 4 are rotatably mounted with a snap-fit ​​plate 41, with one end of the snap-fit ​​plate 41 connected to the outer wall of the relay housing 2. A connecting rod 53 is fixedly provided inside the positioning seat 51, and a guide plate 54 is rotatably mounted on the outer wall of the connecting rod 53. A limit groove 55 is provided inside the guide plate 54.

[0026] Preferably, the limiting groove 55 is provided with a threaded rod 57, and one end of the threaded rod 57 is fixedly connected to a square cap 56. The square cap 56 and the limiting groove 55 are matched in size. The fixing plate 52 is provided with a slot 59. One end of the threaded rod 57 is threadedly connected to the slot 59. The guide plate 54 is provided with a positioning pin 58, and one end of the positioning pin 58 is snapped into the fixing plate 52. Two mounting brackets 511 are fixedly and symmetrically arranged on the upper surface of the positioning seat 51. The two mounting brackets 511 are slidably connected with a snap-fit ​​block 513 inside. The upper end of the snap-fit ​​block 513 is fixedly connected to a push rod 512. One end of the snap-fit ​​block 513 is snapped between the fixing plate 52 and the mounting groove 6, which facilitates quick disassembly and assembly of the relay and makes operation convenient.

[0027] The working principle and process of this utility model are as follows: First, the operator places the DC solid-state relay on the mounting plate 1. At this time, by rotating the guide plate 54 inside the positioning seat 51 on the connecting rod 53, the guide plate 54 is rotated to overlap with the fixed plate 52. Then, the threaded rod 57 on the square cap 56 is rotated to connect with the slot 59 on the fixed plate 52. When the threaded rod 57 is mostly rotated inward, the rotation is stopped when the square cap 56 is rotated to cross the mounting slot 55. Then, the fixed plate 52 is fixed by the positioning pin 58 to improve its tightness. Finally, the two are manually pushed... The push rod 512 drives the snap-fit ​​block 513 to move inside the mounting bracket 511, so that the two snap-fit ​​blocks 513 snap into the two sides of the fixing plate 52 in the mounting groove 6. Conversely, it facilitates disassembly, realizing quick disassembly and assembly of the DC solid-state relay while improving its installation tightness. After the relay is fixed, the protective cover plate 3 is snapped into the slot 32 on the relay housing 2 by using the plug rod 31. Then, the snap-fit ​​plate 41 on the friction shaft 4 is rotated to 90 degrees to stably install the protective cover plate on the relay housing 2. This can effectively prevent dust, debris, moisture and other foreign objects from entering the relay and avoid these foreign objects from affecting the normal operation of the relay.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A DC solid-state relay, characterized in that, The system includes a mounting plate (1), on the upper surface of which a relay housing (2) is provided. A protective cover plate (3) is provided on the upper end of the relay housing (2). Two friction shafts (4) are symmetrically arranged on both sides of the outer wall of the protective cover plate (3). Disassembly and assembly components (5) are provided on both sides of the upper end of the mounting plate (1) located on the relay housing (2). The disassembly and assembly components (5) include a positioning seat (51), a fixing plate (52), and a guide plate (54). There are two positioning seats (51), and each of the two positioning seats (51) is provided with a guide plate (54). There are two mounting slots (6) inside the relay housing (2). There are two fixing plates (52), and each of the two fixing plates (52) is fixedly installed inside the mounting slots (6).

2. A DC solid-state relay according to claim 1, characterized in that, The upper surface of the relay housing (2) is provided with a slot (32), and the bottom four corners of the protective cover (3) are all fixedly provided with plug rods (31), and one end of the plug rods (31) is connected to the slot (32).

3. A DC solid-state relay according to claim 1, characterized in that, Both sets of friction shafts (4) have snap-fit ​​plates (41) rotatably mounted on their outer walls, and one end of the snap-fit ​​plate (41) is connected to the outer wall of the relay housing (2). The positioning seat (51) has a connecting rod (53) fixedly installed inside, and a guide plate (54) is rotatably mounted on the outer wall of the connecting rod (53). The guide plate (54) has a limit groove (55) inside.

4. A DC solid-state relay according to claim 3, characterized in that, The limiting groove (55) is provided with a threaded rod (57) and a square cap (56) is fixedly connected to one end of the threaded rod (57). The square cap (56) and the limiting groove (55) are matched in size.

5. A DC solid-state relay according to claim 4, characterized in that, The fixing plate (52) has a slot (59) inside, and one end of the threaded rod (57) is threaded into the slot (59). The guide plate (54) has a positioning pin (58) inside, and one end of the positioning pin (58) is engaged inside the fixing plate (52).

6. A DC solid-state relay according to claim 5, characterized in that, Two mounting brackets (511) are fixedly and symmetrically arranged on the upper surface of the positioning seat (51). The two mounting brackets (511) are slidably connected with a snap-fit ​​block (513) inside. A push rod (512) is fixedly connected to the upper end of the snap-fit ​​block (513). One end of the snap-fit ​​block (513) is snapped between the fixing plate (52) and the mounting groove (6).

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