Protection device of solid-state relay

Abstract

The utility model discloses a protection device of a solid-state relay, which belongs to the technical field of electric power equipment and comprises a protection shell and a solid-state relay body arranged in an inner cavity of the protection shell, the top end of the protection shell is rotatably connected with a maintenance plate, and two sides of the protection shell are respectively provided with a wire placing channel for a wire to pass through; auxiliary frames are detachably connected to the two sides of the protective shell, adjusting pieces are embedded in the top ends of the auxiliary frames and the top end of the overhauling plate, and a plurality of rubber pads used for fixing are bonded to the inner bottom walls of the auxiliary frames and the bottom ends of the adjusting pieces; movable channels are formed in the two sides of the auxiliary frame, plugging plates used for plugging are arranged in inner cavities of the two movable channels, threaded holes matched with the movable channels are formed in the side face of the auxiliary frame, and the threaded holes are in threaded connection with abutting threaded rods used for fixing the plugging plates. The protection device of the solid-state relay not only can fix the electric wire, but also can perform certain plugging protection on the port.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, and in particular to a protection device for a solid-state relay. Background Technology

[0002] A solid-state relay is a new type of contactless switching device composed entirely of solid-state electronic components. Utilizing the switching characteristics of electronic components, it achieves the purpose of connecting and disconnecting circuits without contacts or sparks, hence its other name, "contactless switch." A solid-state relay is a four-terminal active device, with two terminals serving as input control terminals and the other two as output control terminals. In practical applications, the wires connected to a solid-state relay are easily affected by external forces, and the ports are also susceptible to environmental influences.

[0003] A search revealed a Chinese patent document (authorization announcement number CN216873681U) entitled "A Heat Dissipation Device for a Solid-State Relay," belonging to the technical field of heat dissipation devices. It includes a heat dissipation device housing, a cover plate on one side of the housing, a solid-state relay inside the housing, and an adaptive protective heat dissipation device surrounding the solid-state relay. This invention allows for the fixing of different solid-state relays by adjusting the spacing between the moving blocks. Simultaneously, the design of the support blocks and the corresponding shock-absorbing structure of the heat dissipation device housing enhances the protection of the solid-state relay. The designed air-cooling device effectively cools the relay by blowing cold air from one side to the other, while also simplifying the manufacturing process and increasing its practical applicability. However, the wires connected to the solid-state relay in the aforementioned patent are easily affected by external forces during use, and the ports are also susceptible to environmental influences. Utility Model Content

[0004] The purpose of this invention is to provide a protection device for a solid-state relay to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protection device for a solid-state relay, comprising a protective shell and a solid-state relay body disposed in the inner cavity of the protective shell, a maintenance plate being rotatably connected to the top of the protective shell, and wiring channels for wires to pass through being provided on both sides of the protective shell.

[0006] Both sides of the protective shell are detachably connected to auxiliary frames. Adjustment components are embedded in the top of the auxiliary frames and the top of the inspection plate. Multiple rubber pads for fixing are glued to the inner bottom wall of the auxiliary frames and the bottom of the adjustment components.

[0007] The auxiliary frame has movable channels on both sides, and the inner cavity of each movable channel is equipped with a sealing plate for sealing. The side of the auxiliary frame has threaded holes that are adapted to the movable channels, and the threaded holes are threadedly connected to a tightening threaded rod for fixing the sealing plate.

[0008] As a preferred embodiment, the adjusting element includes:

[0009] Threaded pipe;

[0010] Adjusting threaded rod, which connects to threaded pipe thread;

[0011] An auxiliary block is welded to the bottom end of the adjusting threaded rod, and a hollow plate is welded to the bottom end of the auxiliary block;

[0012] The movable plate is located inside the hollow plate.

[0013] As a preferred embodiment, a first spring connects the auxiliary block and the movable plate, and a retaining plate is rotatably connected to the bottom end of the movable plate via a bearing.

[0014] As a preferred embodiment, the inspection plate is connected and fixed to the protective shell by a latch.

[0015] As a preferred embodiment, an assembly plate is provided on one side of the protective shell, and the side of the assembly plate has multiple round holes for bolts to pass through.

[0016] As a preferred embodiment, the outer periphery of the protective shell is fixedly connected with multiple connecting blocks, and the side of the assembly plate is fixedly connected with multiple limiting rods.

[0017] As a preferred embodiment, a plurality of second springs are fixedly connected between the assembly plate and the connecting block, and a limiting hole is provided on the side of the connecting block for the limiting rod to pass through.

[0018] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0019] The protection device of this solid-state relay can protect the solid-state relay body from the outside during use. The rubber pad of the adjustment part of the auxiliary frame can fix the wire in conjunction with the rubber pad of the auxiliary frame, reducing the possibility of pulling the cable port when subjected to external force. The two sealing plates can seal and only expose the position of the wire. Compared with the open design, it reduces the impact of the external environment on the port.

[0020] The protection device of this solid-state relay allows the adjustment screw rod of the adjusting component to rotate, thereby changing the actual distance between the clamping plate and the threaded tube to meet different fixing needs. During adjustment, the first spring can retract, and the restoring force of the first spring can ensure a continuous and stable fixing effect.

[0021] The solid-state relay's protection device, the design of the mounting plate's fixing bolts, can meet the requirements for stable installation, and the design of the second spring can provide buffer protection, reducing the impact of external vibrations on the solid-state relay body.

[0022] The protection device of this solid-state relay can not only fix the wires, but also provide a certain degree of sealing protection for the ports. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the auxiliary frame and adjusting component of this utility model;

[0026] Figure 3 This is a cross-sectional view of the adjusting threaded rod and the hollow plate of this utility model;

[0027] Figure 4 This is a top view of the protective shell of this utility model after the inspection plate has been removed.

[0028] Explanation of reference numerals in the attached figures:

[0029] In the picture:

[0030] 1. Protective shell; 2. Solid state relay body; 3. Inspection plate; 4. Auxiliary frame; 5. Adjusting component; 6. Rubber pad; 7. Sealing plate; 8. Tightening threaded rod; 9. Assembly plate; 10. Connecting block; 11. Limiting rod; 12. Second spring;

[0031] 51. Threaded pipe; 52. Adjusting threaded rod; 53. Auxiliary block; 54. Hollow plate; 55. Movable plate; 56. First spring; 57. Clamping plate. Detailed Implementation

[0032] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0033] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0034] The connection method can adopt existing methods such as bonding, welding, and bolting, depending on the actual needs. Techniques, methods and equipment known to those skilled in the art may not be discussed in detail. However, where appropriate, the techniques, methods and equipment should be regarded as part of the specification. The proportions of the components in the drawings are for reference only and can be adjusted to a certain extent according to the actual use.

[0035] Please see Figures 1 to 4 As shown, a protection device for a solid-state relay is provided in this embodiment. It includes a protective shell 1 and a solid-state relay body 2 disposed in the inner cavity of the protective shell 1. A maintenance plate 3 is rotatably connected to the top of the protective shell 1. Two viewing windows are embedded in the top of the maintenance plate 3. The maintenance plate 3 is connected and fixed to the protective shell 1 by a latch. Wiring channels for wires to pass through are provided on both sides of the protective shell 1.

[0036] Both sides of the protective shell 1 are detachably connected to auxiliary frames 4. Adjustment components 5 are embedded in the top of the auxiliary frame 4 and the top of the inspection plate 3. Multiple rubber pads 6 for fixing are glued to the inner bottom wall of the auxiliary frame 4 and the bottom of the adjustment component 5. The solid-state relay body 2 is placed in the inner cavity of the protective shell 1. Then, the wire is passed through the two rubber pads 6 and the wire placement channel and connected to the port of the solid-state relay body 2. Then, the adjustment thread rod 52 of the auxiliary frame 4 is rotated so that the rubber pads 6 of the clamping plate 57 fix the wire. The inspection plate 3 is then covered and fixed with a buckle. The adjustment thread rod 52 is rotated so that the rubber pads 6 of the clamping plate 57 fix the solid-state relay body 2. The protective shell 1 can protect the solid-state relay body 2 from the outside. The rubber pads 6 of the adjustment component 5 of the auxiliary frame 4 can fix the wire in conjunction with the rubber pads 6 of the auxiliary frame 4, reducing the possibility of pulling the cable port when subjected to external force.

[0037] Both sides of the auxiliary frame 4 are provided with movable channels. The inner cavity of each movable channel is provided with a sealing plate 7 for sealing. The side of the auxiliary frame 4 is provided with a threaded hole that matches the movable channel. The threaded hole is threadedly connected to a tightening threaded rod 8 for fixing the sealing plate 7. The two sealing plates 7 can seal, exposing only the position of the wire. Compared with the open design, it reduces the impact of the external environment on the port.

[0038] Adjusting component 5 includes:

[0039] Threaded pipe 51;

[0040] Adjust the threaded rod 52, which is threadedly connected to the threaded tube 51;

[0041] Auxiliary block 53 is welded to the bottom end of adjusting threaded rod 52, and hollow plate 54 is welded to the bottom end of auxiliary block 53;

[0042] The movable plate 55 is located in the inner cavity of the hollow plate 54. A first spring 56 is connected between the auxiliary block 53 and the movable plate 55. The bottom end of the movable plate 55 is rotatably connected to the abutment plate 57 through a bearing.

[0043] For installation and buffer protection, an assembly plate 9 is provided on one side of the protective shell 1. The side of the assembly plate 9 has multiple round holes for bolts to pass through. Multiple connecting blocks 10 are fixedly connected to the outer periphery of the protective shell 1. Multiple limiting rods 11 are fixedly connected to the side of the assembly plate 9. Multiple second springs 12 are fixedly connected between the assembly plate 9 and the connecting blocks 10. The side of the connecting blocks 10 has limiting holes for the limiting rods 11 to pass through. The second springs 12 can provide buffer protection and reduce the impact of external vibration on the solid-state relay body 2.

[0044] The solid-state relay body 2 is a conventional instrument. Its working principle, size and model are not related to the problem solved by this application, so they will not be described in detail. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0045] Working principle

[0046] The protection device for this solid-state relay involves placing the solid-state relay body 2 inside the protective shell 1, then passing the wire through two rubber pads 6 and connecting the wire placement channel to the port of the solid-state relay body 2. Then, the adjusting threaded rod 52 of the auxiliary frame 4 is rotated so that the rubber pads 6 of the clamping plate 57 fix the wire, and the inspection plate 3 is covered and fixed with a latch. The adjusting threaded rod 52 is rotated so that the rubber pads 6 of the clamping plate 57 fix the solid-state relay body 2.

[0047] In practical use, the protective shell 1 can protect the solid-state relay body 2 from the outside. The rubber pad 6 of the adjusting part 5 of the auxiliary frame 4, together with the rubber pad 6 of the auxiliary frame 4, can fix the wire and reduce the possibility of pulling the cable port when subjected to external force. The two sealing plates 7 can seal and only expose the position of the wire. Compared with the open design, it reduces the impact of the external environment on the port. The second spring 12 can provide buffer protection and reduce the impact of external vibration on the solid-state relay body 2.

[0048] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protection device for a solid-state relay, comprising a protective housing (1) and a solid-state relay body (2) disposed within the cavity of the protective housing (1), characterized in that, The top of the protective shell (1) is rotatably connected to a maintenance plate (3), and both sides of the protective shell (1) are provided with wire placement channels for wires to pass through. Both sides of the protective shell (1) are detachably connected to auxiliary frames (4). The top of the auxiliary frame (4) and the top of the inspection plate (3) are both fitted with adjustment components (5). The inner bottom wall of the auxiliary frame (4) and the bottom of the adjustment component (5) are both glued with multiple rubber pads (6) for fixing. The auxiliary frame (4) has movable channels on both sides, and the inner cavity of each of the two movable channels is provided with a sealing plate (7) for sealing. The auxiliary frame (4) has threaded holes adapted to the movable channels on its side, and the threaded holes are threadedly connected to a tightening threaded rod (8) for fixing the sealing plate (7).

2. The protection device for a solid-state relay according to claim 1, characterized in that, The adjusting member (5) includes: Threaded pipe (51); Adjust the threaded rod (52) and thread it into the threaded tube (51); An auxiliary block (53) is welded to the bottom end of the adjusting threaded rod (52), and a hollow plate (54) is welded to the bottom end of the auxiliary block (53); The movable plate (55) is set in the inner cavity of the hollow plate (54).

3. The protection device for a solid-state relay according to claim 2, characterized in that, A first spring (56) is connected between the auxiliary block (53) and the movable plate (55), and a retaining plate (57) is rotatably connected to the bottom end of the movable plate (55) through a bearing.

4. The protection device for a solid-state relay according to claim 1, characterized in that, The inspection plate (3) is connected and fixed to the protective shell (1) by a latch.

5. The protection device for a solid-state relay according to claim 1, characterized in that, The protective shell (1) has an assembly plate (9) on one side, and the side of the assembly plate (9) has a plurality of round holes for bolts to pass through.

6. The protection device for a solid-state relay according to claim 5, characterized in that, Multiple connecting blocks (10) are fixedly connected to the outer periphery of the protective shell (1), and multiple limiting rods (11) are fixedly connected to the side of the assembly plate (9).

7. The protection device for a solid-state relay according to claim 6, characterized in that, A plurality of second springs (12) are fixedly connected between the assembly plate (9) and the connecting block (10), and the side of the connecting block (10) is provided with a limiting hole for the limiting rod (11) to pass through.

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