Relay module pressing plate assembly
By designing the pressure plate assembly on the relay module and fixing it with elastic hooks, the problems of unstable fixing and inconvenient maintenance of the prior art relay are solved, and the safe, stable and rapid disassembly of the relay is achieved.
Patent Information
- Application Number
- CN202422084946.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing relay module fixing structure has safety hazards and inconvenient maintenance problems, especially in scenarios involving AC 220V signal, the steel hook fixing has the risk of electric shock, while the plastic crimp structure is insufficient and it is easy to be damaged during maintenance.
A relay module pressure plate assembly is designed. By fixing the pressure plate on the surface of the relay and fixing it through the positioning hole and waist hole with an elastic hook, the relay is achieved to achieve stable and convenient disassembly.
This design improves the fixing stability of the relay, avoids electric shock accidents and local stress deformation, simplifies the maintenance process, and ensures the normal operation and rapid replacement of the relay.
Smart Images
Figure CN222952999U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of relay module installation, in particular to a relay module pressure plate component. Background Art
[0002] With the expansion of industrial equipment, the scale of DCS\PLC control systems is also getting larger and larger, consisting of tens of thousands of instruments. The risk of failure of a single device is getting higher and higher. In serious cases, it can cause large-scale product quality problems, and even major production accidents and equipment accidents, which seriously threaten the normal operation of industrial equipment and the stability of production. The use of modular signal conversion and switching products has gradually become the mainstream of process control system hardware integration.
[0003] With the advancement of technology, wire-saving products are becoming more and more complete, covering most applications of DCS / PLC device integration. Among them, the most commonly used device for isolating digital signals is a small signal relay. The relay module, which was first used in the machine tool industry, has gradually expanded its application to process control systems.
[0004] The relay module is based on the channel requirements of the system. A group of relays are soldered to the PCB board, and necessary functional connections such as common terminal connection, coil protection, action indication, loop protection, and power distribution are made to achieve low-cost digital isolation, which greatly speeds up the system integration speed. Internal signals are generally led out to special sockets for quick connection with system cards using special cables. External signals are generally led to terminals for connecting on-site cables.
[0005] When designing the relay module, in order to make the relay replaceable at any time, it is generally pluggable, and the relay is not directly welded. A special base is welded on the module, and the relay is plugged into the base. Because it is a split structure, the relay must be fixed to prevent loosening and falling off. There are generally two ways to fix the relay: one is steel hook fixing, and the other is plastic buckle.
[0006] For some scenarios involving AC 220V signals, there are certain risks in using steel hooks for fixing. Many pins of components on the board are energized, and electric shock accidents are prone to occur when disassembling and assembling relays. In addition, due to the limitations of the manufacturing process of the elastic steel hook, the pressure uncertainty of the steel hook is strong, and the force point is relatively concentrated, which will cause the relay casing to deform and affect the normal operation of the internal mechanical mechanism of the relay. This often happens in actual applications.
[0007] The buckle structure of the plastic product was designed by Izumi of Japan, and its design has inherent defects. Due to the weak strength of the plastic hook, it is easy for users to damage it during use. The biggest problem is that to replace the plastic hook, the relay base must be removed from the PCB, and the relay module must be dismantled and repaired as a whole, which makes it impossible for users to solve major production risks during normal production.
[0008] How to design a more convenient relay fixing structure is an urgent problem to be solved in the relay module industry Summary of the invention
[0009] In order to make up for the deficiencies of the prior art, the utility model provides a relay module pressing plate assembly which has a simple structure, is convenient for assembly and disassembly, and is firm and reliable.
[0010] The utility model is realized through the following technical solutions:
[0011] A relay module pressure plate assembly, a PCB board is arranged on the relay module housing, a plurality of relay bases are installed on the PCB board, and the relay is plugged into the relay base. The invention is characterized in that a pressure plate is fixed on the upper surface of the relay, positioning holes are opened at both ends of the pressure plate, waist holes are opened at both ends of the PCB board, and elastic hooks are respectively inserted into the positioning holes and waist holes at both sides of the pressure plate through upper and lower ends.
[0012] The utility model fixes a pressing plate on the surface of a relay, and both ends of the pressing plate are pressed by elastic hooks to realize the overall fixing of the pressing plate. The fixing method is to open a waist hole on the PCB board for hanging the elastic hook.
[0013] The better technical solution of the utility model is:
[0014] The elastic hook body is in an eight-shaped shape, the upper end of the elastic hook is a clamping plate hook connected to the elastic hook body as a whole, the hook of the clamping plate hook faces downward, the end is a positioning cross bar, the clamping plate hook is clamped on the edge of the clamping plate, and the positioning cross bar is clamped into the positioning hole of the clamping plate; the lower end of the elastic hook is two symmetrical PCB clamping hooks, the PCB clamping hook is a semicircular hook with an opening facing outward, and the lower end of the elastic hook is fixed by clamping the semicircular hook in the waist hole.
[0015] Further preferably, the PCB card hook and the elastic hook body are in the same plane, which ensures that the elastic hook is fixedly connected to the PCB board in a linear state, achieves a more stable connection, and avoids deformation of the elastic hook.
[0016] The positioning holes at both ends of the pressing plate are long square hole structures parallel to the side of the pressing plate. The long square hole structure corresponds to the positioning cross bar structure at the upper end of the elastic hook to achieve perfect docking of shapes.
[0017] The two ends of the PCB board are symmetrically provided with square waist holes to facilitate the insertion of two PCB hooks at the lower ends of the elastic hooks.
[0018] Further preferably, the length spacing of the waist hole of the PCB board end is smaller than the spacing between the two ends of the lower end of the elastic hook, and the insertion of the PCB bent hook into the waist hole is achieved by elastic compression of the elastic hook body.
[0019] The pressing plate is an aluminum alloy angle structure, and the angled bending surface of the pressing plate fits the top of the relay. The setting of the angle structure realizes the initial positioning of the contact between the card plate and the relay, and a waist hole can be opened at the corresponding position of the PCB board according to the width of the pressing plate.
[0020] The utility model has a simple structure and a reasonable design. The pressure plate assembly is easy to install and the relay is quick to disassemble. The pressure of the pressure plate assembly on the top rubber shell of the relay is uniform, and local stress deformation will not occur. The accessories are easy to replace and the device is firm and reliable, which is suitable for wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The utility model is further described below in conjunction with the accompanying drawings.
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the assembly of the pressing plate and the elastic hook of the utility model;
[0024] Figure 3 It is a schematic diagram of the main structure of the elastic hook;
[0025] Figure 4 It is a left view structural schematic diagram of the elastic hook;
[0026] Figure 5 is a schematic diagram of the three-dimensional structure of the elastic hook;
[0027] Figure 6 It is a structural schematic diagram of the pressing plate;
[0028] Figure 7 This is the main structural diagram of the original relay module steel hook fixing form;
[0029] Figure 8 This is a left-side structural diagram of the original relay module steel hook fixing form.
[0030] In the figure, 1 is the relay module housing, 2 is the pressure plate, 3 is the elastic hook, 4 is the relay, 5 is the PCB board, 6 is the relay base, 7 is the positioning hole, 8 is the pressure plate hook, and 9 is the PCB hook. DETAILED DESCRIPTION
[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0033] The utility model is described in detail below in conjunction with the accompanying drawings: In this embodiment, a PCB board 5 is provided on the relay module housing 1, and a plurality of relay bases 6 are installed on the PCB board 5. The relay 4 is plugged into the relay base 6. A pressing plate 2 is fixed to the upper surface of the relay 4. Positioning holes 7 are provided at both ends of the pressing plate 2, and waist holes are provided at both ends of the PCB board 5. The elastic hooks 3 are respectively inserted into the positioning holes 7 and the waist holes at both sides of the pressing plate 2 through the upper and lower ends.
[0034] Specifically, the main body of the elastic hook 3 is in an eight-shaped shape, and the upper end of the elastic hook 3 is a card pressing plate hook 8 connected to the main body of the elastic hook 3 as a whole, the hook shape of the card pressing plate hook 8 faces downward, and the end is a positioning cross bar; the lower end of the elastic hook 3 is a card PCB hook 9 with two symmetrical structures, and the card PCB hook 9 is a semicircular hook with an opening facing outward; the card PCB hook 9 and the main body of the elastic hook 3 are in the same plane; the positioning holes 7 at both ends of the pressure plate 2 are long square hole structures parallel to the side of the pressure plate 7; square waist holes are symmetrically opened at both ends of the PCB board 5; the length of the waist hole at the end of the PCB board 5 is less than the distance between the two ends of the lower end of the elastic hook 3; the pressure plate 2 is an aluminum alloy angle structure, and the angle bending surface of the pressure plate 2 fits the top of the relay 4.
[0035] The specific application form of the utility model is as follows: two square waist holes are opened at the upper positions of the two ends of the PCB board 5; the pressing plate 2 is fixed on the upper surface of the relay 4, and the angular bending surface of the pressing plate 2 fits the upper surface of the relay 4 to achieve the preliminary fixation of the position of the pressing plate 2; then the eight-shaped main body of the elastic hook 3 is pressed by hand, so that the PCB hook 9 below the elastic hook 3 is deeply inserted into the waist hole on the PCB board 5, the elastic hook 3 is released by fingers and the upper end of the elastic hook 3 The pressing plate hook 8 is forced inward from the side of the pressing plate 2, so that the positioning cross bar at the end of the pressing plate hook 8 is inserted into the positioning hole 7 of the pressing plate 2; the same steps are used to fix the other end of the pressing plate 2, so that the relay 4 can be fixed by the pressing plate 2 and cannot be loosened.
[0036] When inspecting or repairing the relay 4, first push the bent hook 8 on the upper end of the pressure plate 2 outward to separate it from the pressure plate 2, so as to realize the disassembly of the pressure plate 2. After the inspection or repair is completed, put the pressure plate 2 back to its original position, and directly connect the elastic hook 3 with the pressure plate 2 to achieve re-fixation. The whole process does not require the complete removal of the elastic hook 3, and the operation is more convenient.
[0037] In addition, the overall fixation of the relay 4 by the pressing plate 2 and the covering of the top of the relay 4 ensure that the pressure on the top plastic shell of the relay 4 is uniform, and there will be no local deformation due to stress, and the overall structure is firm and reliable.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A relay module pressure plate assembly, wherein a PCB board (5) is arranged on a relay module housing (1), a plurality of relay bases (6) are mounted on the PCB board (5), and a relay (4) is plugged into the relay base (6), characterized in that: A pressure plate (2) is fixed on the upper surface of the relay (4), positioning holes (7) are provided at both ends of the pressure plate (2), waist holes are provided at both ends of the PCB board (5), and elastic hooks (3) are respectively engaged with the positioning holes (7) and the waist holes at both sides of the pressure plate (2) through upper and lower ends.
2. The relay module pressure plate assembly according to claim 1, characterized in that: The main body of the elastic hook (3) is in an eight-shaped shape. The upper end of the elastic hook (3) is a card pressing plate bent hook (8) connected to the main body of the elastic hook (3) as a whole. The hook shape of the card pressing plate bent hook (8) faces downwards, and the end is a positioning cross bar. The lower end of the elastic hook (3) is two symmetrically structured card PCB bent hooks (9). The card PCB bent hooks (9) are semicircular hooks with their openings facing outwards.
3. The relay module pressure plate assembly according to claim 2, characterized in that: The card PCB bent hook (9) and the elastic hook (3) body are located in the same plane.
4. The relay module pressure plate assembly according to claim 1, characterized in that: The positioning holes (7) at both ends of the pressing plate (2) are long square hole structures parallel to the side of the pressing plate (2).
5. The relay module pressure plate assembly according to claim 1, characterized in that: The two ends of the PCB board (5) are symmetrically provided with square waist holes.
6. The relay module pressure plate assembly according to claim 2 or 5, characterized in that: The length of the waist hole at the end of the PCB board (5) is smaller than the distance between the two ends of the lower end of the elastic hook (3).
7. The relay module pressure plate assembly according to claim 1, characterized in that: The pressing plate (2) is an aluminum alloy angular structure, and the angular bending surface of the pressing plate (2) fits the top of the relay (4).