Safety relay

Abstract

The utility model discloses a safety relay, shell includes upper casing body and lower casing body, the upper casing body includes the upper plate body, and the rear end of upper casing body is provided with upper back baffle, and the middle section of upper plate body to rear section both sides is provided with the first upper extension and second upper extension that extend downward respectively, and the rear end of first upper extension and second upper extension is connected with upper back baffle, and the upper heat dissipation mouth is seted up on first upper extension and second upper extension, and the inside all is provided with two locating posts connected with upper plate body, the inside of first lower extension is provided with the lower clamping station cooperation with upper clamping block, and the inside of lower back baffle is provided with the first lower clamping block cooperation with first upper clamping station, and the inside of second lower extension is provided with the second lower clamping block cooperation with second upper clamping station, the utility model discloses have promoted production efficiency, reduced maintenance cost and failure downtime, improved security, simple structure, low in manufacturing cost and not easy to damage and so on beneficial effect.

Description

Technical Field

[0001] This utility model relates to the field of control element technology, and more specifically, to a relay. Background Technology

[0002] In traditional industrial control, general-purpose relays or PLC standard I / O modules are often used to replace specialized safety control components. However, this traditional structure suffers from several drawbacks. First, it relies on screws to secure the housing and internal circuit boards, increasing assembly steps and labor costs. Loose screws can also lead to poor contact and secondary malfunctions. Second, the housing assembly lacks concealed fixing design, making it easy for external personnel to accidentally disassemble and damage internal components. Furthermore, the internal circuit boards lack anti-reverse installation design; if inserted incorrectly during assembly, the circuit may be burned out, increasing maintenance costs and equipment downtime. Third, general-purpose components lack optimized heat dissipation structures for the high-temperature environment of industrial settings, leading to accelerated aging due to heat buildup over time. The lack of intuitive operating status indicators makes it difficult for operators to quickly determine if components are functioning correctly, delaying troubleshooting. Finally, when traditional general-purpose relays or PLC standard I / O modules are used to control equipment, they cannot switch to a safe state (power-off shutdown) when they malfunction (e.g., contact welding, coil jamming, or electronic component damage), posing a risk of serious personal injury or equipment damage.

[0003] Therefore, those skilled in the art are dedicated to providing a safety relay that can effectively solve the above-mentioned technical problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a safety relay, including a housing, which comprises an upper housing and a lower housing; The upper housing includes an upper plate, and an upper rear baffle is provided at the rear end of the upper housing. The upper plate has a first upper extension and a second upper extension extending downward on both sides from the middle to the rear section. The rear ends of the first upper extension and the second upper extension are connected to the upper rear baffle. The first upper extension and the second upper extension are each provided with an upper heat dissipation vent, and the inner side of each is provided with two positioning posts connected to the upper plate. An upper locking block is provided on the inner side of the first upper extension, a first upper locking platform is provided on the inner side of the upper rear baffle, and a second upper locking platform is provided on the inner side of the second upper extension. The lower housing includes a lower plate, and a lower rear baffle is provided at the rear end of the lower housing. The middle section to the rear section of the lower plate are respectively provided with a first lower extension and a second lower extension that cooperate with the first upper extension and the second upper extension. The rear ends of the first lower extension and the second lower extension are connected to the lower rear baffle. The first lower extension and the second lower extension are each provided with a lower heat dissipation vent. The lower plate is provided with four positioning cylinders that cooperate with each of the positioning pins. The inner side of the first lower extension is provided with a lower locking platform that cooperates with the upper locking block, the inner side of the lower rear baffle is provided with a first lower locking block that cooperates with the first upper locking platform, and the inner side of the second lower extension is provided with a second lower locking block that cooperates with the second upper locking platform.

[0005] Furthermore, the upper locking block includes a connecting section, which is inclined with a lower outer edge and a higher inner edge. An extension section is provided at the upper end of the connecting section, and a locking slot is formed in the upper half of the extension section. The upper locking block is made of a deformable material. The lower end of the connecting section is connected to the first upper extension. The lower card holder includes a positioning part for insertion into the card slot, and a reinforcing block is provided at the angle between the positioning part and the first lower extension; the outer side of the positioning part is connected to the first lower extension, and an inclined surface is provided at the upper inner side of the positioning part.

[0006] Furthermore, the connecting section and the extension section are made of an integral molding structure; the positioning part and the reinforcing block are made of an integral molding structure.

[0007] Furthermore, the first lower card block and the second lower card block have the same structure as the upper card block; the first upper card platform and the second upper card platform have the same structure as the lower card platform.

[0008] Furthermore, the front ends of the upper and lower housings are connected by a cover; The cover is provided with a light guide post, which is integrated with the cover by a secondary injection molding process.

[0009] Furthermore, the shell cover includes a main cover, and side covers are provided at both ends of the main cover. The light guide post is located in the lower half of the main cover.

[0010] Furthermore, two retaining rings are provided at both the upper and lower ends of the inner side of the main cover, and the front half of the upper shell and the lower shell are provided with bosses that cooperate with each retaining ring. The outer side of the boss is a guide surface and the inner side is a positioning surface. The main cover has three front and rear limiting blocks at both the upper and lower ends of its inner side. The upper and lower shells each have three L-shaped front and rear limiting components. Each front and rear limiting component corresponds to and cooperates with each front and rear limiting block.

[0011] Furthermore, both the upper and lower housings are provided with two left and right limiting strips, and each of the left and right limiting strips is respectively attached to the inner wall of each of the side covers.

[0012] Furthermore, it also includes a slider made of elastic material, the slider having an opening in the middle, two connecting rods being provided at the opening, the connecting ends of each connecting rod being connected to the upper and lower ends of the opening respectively, and the extended ends of each connecting rod being suspended and provided with a positioning rod; Both the upper rear baffle and the lower rear baffle are provided with through holes, and each of the positioning rods is inserted into the through holes respectively.

[0013] Furthermore, it also includes a PCBA board disposed within the lower housing; The front half of the lower plate is provided with two buckles for limiting the two sides of the PCBA board. The inner side of the lower rear baffle is provided with two limiting platforms for positioning the PCBA board. The anti-reverse mounting block is provided on the inner side of the lower rear baffle and is located at the anti-reverse mounting port of the PCBA board. The front half of the PCBA board is provided with wiring terminals on both sides, and each wiring terminal is located between the upper rear baffle and the lower plate.

[0014] This utility model has the following beneficial effects: 1. The upper and lower shells are precisely fitted together by four positioning pins and positioning cylinders, achieving initial positioning without offset. The design, secured by three sets of snap-fit ​​structures, significantly reduces assembly difficulty, allowing for assembly without complex tools. The snap-fit ​​positions are concealed, preventing unauthorized disassembly and ensuring the safety of the internal structure. This also facilitates efficient disassembly by maintenance personnel after understanding the principles, balancing safety and maintainability. Simultaneously, the reinforcing blocks on the outer side of the lower positioning platform enhance the locking strength, ensuring a stable assembly that is unlikely to loosen over long-term use. 2. The cover and housing are fixed together by the cooperation of 4 left and right limiting strips, 6 front and rear limiting blocks and L-shaped limiting parts, and 4 retaining rings and bosses. The left and right limiting strips fit against the inner wall of the side cover to prevent the cover from shifting left and right. The front and rear limiting blocks and limiting parts are precisely engaged to restrict forward and backward movement. The outer guide surface of the boss facilitates the insertion of the retaining ring, and the inner positioning surface ensures the limiting effect. This makes the cover installation simple and quick, and can maintain stability for a long time, effectively protecting the internal components. Moreover, the light guide column is integrated with the cover through secondary injection molding, without additional assembly steps, improving production efficiency while ensuring stable light guiding function. 3. The lower housing uses two buckles to laterally limit the PCBA board on both sides, and two limiting platforms to longitudinally position the rear end. This achieves a stable fixation without screws, greatly reducing assembly steps and time, and lowering production labor costs. At the same time, the anti-reverse mounting block on the inner side of the lower rear baffle corresponds to the anti-reverse mounting port of the PCBA board. If installed in reverse, it will block the board from being inserted. Structurally, it avoids circuit failures caused by reverse installation, ensures the safe operation of the relay circuit, and reduces maintenance costs and downtime due to malfunctions. 4. The upper heat dissipation vents of the upper housing extension and the lower heat dissipation vents of the lower housing extension work together to form a good airflow channel, which can dissipate the heat generated by the internal components when the relay is working in a timely manner, avoiding the impact of high temperature on component performance and service life, improving the long-term operational stability of the product, and adapting to the needs of long-term continuous operation in industrial environments. The light guide on the cover can clearly guide the light from the PCBA board indicator lights, allowing operators to intuitively judge the relay's operating status, facilitating timely detection and handling of problems, and improving equipment operation and maintenance efficiency; 5. Compared to traditional general-purpose relays or PLC standard I / O modules, this safety relay is designed with multiple fixing and error prevention mechanisms (such as anti-reverse installation and stable latches) to ensure its operational stability. This reduces the risk of failure to switch to a safe state (power failure shutdown) due to contact welding, coil jamming, or other faults. It can effectively avoid personal injury or equipment damage caused by equipment failure in industrial scenarios. It has the advantages of improved safety, simple structure, low manufacturing cost, and resistance to damage. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of a specific embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model without the upper shell installed.

[0018] Figure 4 yes Figure 3 A schematic diagram of the structure without PCBA boards installed.

[0019] Figure 5 yes Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 6 This is a schematic diagram of the structure of this utility model without the shell cover installed.

[0021] Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point B in the middle.

[0022] Figure 8This is a schematic diagram of the upper shell structure.

[0023] Figure 9 yes Figure 8 A magnified schematic diagram of the structure at point C.

[0024] Figure 10 yes Figure 8 A magnified schematic diagram of the structure at point D.

[0025] Figure 11 This is a schematic diagram of the lower shell structure.

[0026] Figure 12 yes Figure 11 A magnified schematic diagram of the structure at point E in the middle.

[0027] Figure 13 This is a schematic diagram of the shell cover.

[0028] Figure 14 This is a schematic diagram of the slider's three-dimensional structure.

[0029] The attached diagram lists the components represented by each number as follows: 1. Outer shell; 2. Upper shell; 3. Lower shell; 5. Upper plate; 6. Upper rear baffle; 7. First upper extension; 8. Second upper extension; 9. Upper heat dissipation vent; 10. Positioning post; 11. Upper locking block; 11a. Connecting section; 11b. Extension section; 11c. Locking slot; 12. First upper locking platform; 13. Second upper locking platform; 15. Lower plate; 16. Lower rear baffle; 17. First lower extension; 18. Second lower extension; 19. Lower heat dissipation vent; 20. Positioning cylinder; 21. Lower locking platform; 21a. Positioning part; 21b. Reinforcing block; 21c, Inclined surface; 22, First lower locking block; 23, Second lower locking block; 26, Shell cover; 27, Light guide post; 28, Main cover; 29, Side cover; 30, Snap ring; 31, Boss; 31a, Guide surface; 31b, Positioning surface; 32, Front and rear limiting blocks; 33, Front and rear limiting components; 35, Left and right limiting strips; 36, Slider; 37, Opening; 38, Connecting rod; 39, Positioning rod; 50, Through hole; 51, PCBA board; 52, Buckle; 53, Limiting platform; 57, Anti-reverse mounting block; 58, Anti-reverse mounting port; 59, Wiring terminal. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 1 to 14 As shown, a safety relay includes a housing 1, which includes an upper housing 2 and a lower housing 3; The upper housing 2 includes an upper plate 5. An upper rear baffle 6 is provided at the rear end of the upper housing 2. A first upper extension 7 and a second upper extension 8 extending downward are respectively provided on both sides of the middle to rear section of the upper plate 5. The rear ends of the first upper extension 7 and the second upper extension 8 are connected to the upper rear baffle 6. An upper heat dissipation vent 9 is provided on both the first upper extension 7 and the second upper extension 8, and two positioning posts 10 connected to the upper plate 5 are provided on the inner side of both. An upper locking block 11 is provided on the inner side of the first upper extension 7, a first upper locking platform 12 is provided on the inner side of the upper rear baffle 6, and a second upper locking platform 13 is provided on the inner side of the second upper extension 8. The lower housing 3 includes a lower plate 15. A lower rear baffle 16 is provided at the rear end of the lower housing 3. A first lower extension 17 and a second lower extension 18 are respectively provided on both sides of the middle to rear section of the lower plate 15 to cooperate with the first upper extension 7 and the second upper extension 8. The rear ends of the first lower extension 17 and the second lower extension 18 are connected to the lower rear baffle 16. A lower heat dissipation port 19 is provided on both the first lower extension 17 and the second lower extension 18. Four positioning cylinders 20 are provided on the lower plate 15 to cooperate with each of the positioning posts 10. The inner side of the first lower extension 17 is provided with a lower locking platform 21 that cooperates with the upper locking block 11, the inner side of the lower rear baffle 16 is provided with a first lower locking block 22 that cooperates with the first upper locking platform 12, and the inner side of the second lower extension 18 is provided with a second lower locking block 23 that cooperates with the second upper locking platform 13.

[0033] The upper locking block 11 includes a connecting segment 11a, which is inclined with a lower outer edge and a higher inner edge. An extension segment 11b is provided at the upper end of the connecting segment 11a, and a notch 11c is provided in the upper half of the extension segment 11b. The upper locking block 11 is made of a deformable material. The lower end of the connecting segment 11a is connected to the first upper extension 7. The lower card holder 21 includes a positioning part 21a for insertion into the card slot 11c. A reinforcing block 21b is provided at the angle between the positioning part 21a and the first lower extension 17. The outer side of the positioning part 21a is connected to the first lower extension 17, and an inclined surface 21c is provided at the upper inner side of the positioning part 21a.

[0034] The connecting section 11a and the extension section 11b are made of an integral molding structure; the positioning part 21a and the reinforcing block 21b are made of an integral molding structure.

[0035] The first lower card block 22 and the second lower card block 23 have the same structure as the upper card block 11; the first upper card platform 12 and the second upper card platform 13 have the same structure as the lower card platform 21.

[0036] The front ends of the upper shell 2 and the lower shell 3 are connected by a shell cover 26; A light guide post 27 is provided on the shell cover 26, and the light guide post 27 is integrated with the shell cover 26 by secondary injection molding.

[0037] The cover 26 includes a main cover 28, with side covers 29 at both ends of the main cover 28, and the light guide post 27 is located in the lower half of the main cover 28.

[0038] The main cover 28 has two retaining rings 30 at both the upper and lower ends of its inner side. The upper shell 2 and the lower shell 3 are each provided with a boss 31 that works with each retaining ring 30. The outer side of the boss 31 is a guide surface 31a and the inner side is a positioning surface 31b. The main cover 28 has three front and rear limiting blocks 32 on its inner upper and lower ends. The upper shell 2 and the lower shell 3 each have three L-shaped front and rear limiting members 33. Each front and rear limiting member 33 corresponds to and cooperates with each front and rear limiting block 32.

[0039] Both the upper housing 2 and the lower housing 3 are provided with two left and right limiting strips 35, and each of the left and right limiting strips 35 is respectively attached to the inner wall of each of the side covers 29. This utility model also includes a slider 36 made of elastic material, the slider 36 having an opening 37 in the middle, and two connecting rods 38 provided at the opening 37. The connecting ends of each connecting rod 38 are respectively connected to the upper and lower ends of the opening 37, and the extended ends of each connecting rod 38 are suspended and provided with positioning rods 39. Both the upper rear baffle 6 and the lower rear baffle 16 are provided with through holes 50, and each of the positioning rods 39 is inserted into each of the through holes 50.

[0040] It also includes a PCBA board 51 disposed within the lower housing 3; The front half of the lower plate 15 is provided with two buckles 52 for limiting the two sides of the PCBA board 51. The inner side of the lower rear baffle 16 is provided with two limiting platforms 53 for positioning the PCBA board 51. The anti-reverse mounting block 57 is provided inside the lower rear baffle 16 and is located at the anti-reverse mounting port 58 of the PCBA board 51. The anti-reverse mounting block is inserted into the anti-reverse mounting port, which can structurally prevent the PCBA board from being installed in reverse, thereby preventing circuit failure caused by reverse installation.

[0041] The front half of the PCBA board 51 is provided with wiring terminals 59 on both sides, and each wiring terminal is located between the upper rear baffle 6 and the lower plate 15.

[0042] In this utility model, the outer shell 1 is divided into an upper shell 2 and a lower shell 3. Initial positioning is achieved through the cooperation of positioning posts and positioning cylinders: the four positioning posts 10 on the inner side of the upper plate 5 are inserted one by one with the four positioning cylinders 20 on the lower plate 15, so that there is no offset when the upper and lower shells are spliced. After splicing, it is fixed by three sets of buckle structures: the upper locking block 11 on the inner side of the first upper extension 7 engages with the lower locking platform 21 on the inner side of the first lower extension 17; the locking opening 11c of the upper locking block 11 wraps around the positioning part 21a of the lower locking platform 21, and the reinforcing block 21b on the outer side of the positioning part 21a enhances the engagement strength; the first upper locking platform 12 on the inner side of the upper rear baffle 6 engages with the first lower locking block 22 on the inner side of the lower rear baffle 16; the second upper locking platform 13 on the inner side of the second upper extension 8 engages with the second lower locking block 23 on the inner side of the second lower extension 18. The cover 26 consists of a main cover 28 and side covers 29 at both ends. Two left and right limiting strips 35 on the upper housing 2 and the lower housing 3 respectively fit against the inner wall of the side cover 29 to prevent the cover from shifting left and right. Three front and rear limiting blocks 32 on the upper and lower ends of the inner side of the main cover 28 are engaged with three L-shaped front and rear limiting pieces 33 on the upper housing 2 and the lower housing 3 to restrict the front and rear movement of the cover. Two retaining rings 30 on the upper and lower ends of the inner side of the main cover 28 are engaged with the bosses 31 on the front half of the upper housing 2 and the lower housing 3. The guide surface 31a on the outer side of the boss 31 facilitates the insertion of the retaining rings, and the positioning surface 31b on the inner side provides a limiting effect. The light guide column 27 is integrated with the cover 26 through secondary injection molding and can guide the light from the indicator light on the PCBA board 51 to intuitively display the working status of the relay. Two latches 52 on the front half of the lower plate 15 provide lateral restraint to both sides of the PCBA board 51, and two limiting platforms 53 on the inner side of the lower rear baffle 16 provide longitudinal positioning to the rear end of the PCBA board 51. This achieves stable fixation without screws, reducing assembly steps and time. The anti-reverse mounting block 57 on the inner side of the lower rear baffle 16 corresponds to the anti-reverse mounting port 58 on the PCBA board 51. If the PCBA board 51 is installed in reverse, the anti-reverse mounting block 57 will block the board from being inserted, preventing circuit failure due to reverse installation.

[0043] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A safety relay, characterized in that: Includes an outer shell (1), which includes an upper shell (2) and a lower shell (3); The upper housing (2) includes an upper plate (5), and an upper rear baffle (6) is provided at the rear end of the upper housing (2). The upper plate (5) has a first upper extension (7) and a second upper extension (8) extending downward on both sides from the middle to the rear section. The rear ends of the first upper extension (7) and the second upper extension (8) are connected to the upper rear baffle (6). The first upper extension (7) and the second upper extension (8) are each provided with an upper heat dissipation vent (9), and the inner side of each is provided with two positioning posts (10) connected to the upper plate (5). An upper locking block (11) is provided on the inner side of the first upper extension (7), a first upper locking platform (12) is provided on the inner side of the upper rear baffle (6), and a second upper locking platform (13) is provided on the inner side of the second upper extension (8). The lower housing (3) includes a lower plate (15), and a lower rear baffle (16) is provided at the rear end of the lower housing (3). The lower plate (15) has a first lower extension (17) and a second lower extension (18) on both sides from the middle to the rear section, which are used in conjunction with the first upper extension (7) and the second upper extension (8). The rear ends of the first lower extension (17) and the second lower extension (18) are connected to the lower rear baffle (16). The first lower extension (17) and the second lower extension (18) are each provided with a lower heat dissipation port (19). The lower plate (15) is provided with four positioning cylinders (20) that are used in conjunction with each of the positioning posts (10). The inner side of the first lower extension (17) is provided with a lower locking platform (21) that works in conjunction with the upper locking block (11), the inner side of the lower rear baffle (16) is provided with a first lower locking block (22) that works in conjunction with the first upper locking platform (12), and the inner side of the second lower extension (18) is provided with a second lower locking block (23) that works in conjunction with the second upper locking platform (13).

2. The safety relay as described in claim 1, characterized in that: The upper locking block (11) includes a connecting section (11a), which is inclined with a lower outer edge and a higher inner edge. An extension section (11b) is provided at the upper end of the connecting section (11a), and a locking slot (11c) is provided in the upper half of the extension section (11b). The upper locking block (11) is made of deformable material. The lower end of the connecting section (11a) is connected to the first upper extension (7). The lower card holder (21) includes a positioning part (21a) for insertion into the card slot (11c), and a reinforcing block (21b) is provided at the angle between the positioning part (21a) and the first lower extension (17); the outer side of the positioning part (21a) is connected to the first lower extension (17), and an inclined surface (21c) is provided at the upper inner side of the positioning part (21a).

3. The safety relay as described in claim 2, characterized in that: The connecting section (11a) and the extension section (11b) are made of an integral molding structure; the positioning part (21a) and the reinforcing block (21b) are made of an integral molding structure.

4. The safety relay as described in claim 3, characterized in that: The first lower card block (22) and the second lower card block (23) have the same structure as the upper card block (11); the first upper card platform (12) and the second upper card platform (13) have the same structure as the lower card platform (21).

5. The safety relay as described in claim 4, characterized in that: The front ends of the upper shell (2) and the lower shell (3) are connected by a shell cover (26); A light guide post (27) is provided on the shell cover (26), and the light guide post (27) is integrated with the shell cover (26) by secondary injection molding.

6. The safety relay as described in claim 5, characterized in that: The shell cover (26) includes a main cover (28), and side covers (29) are provided at both ends of the main cover (28). The light guide column (27) is located in the lower half of the main cover (28).

7. The safety relay as described in claim 6, characterized in that: The main cover (28) has two retaining rings (30) at both the upper and lower ends of its inner side. The upper shell (2) and the lower shell (3) are each provided with a boss (31) that works with each retaining ring (30). The outer side of the boss (31) is a guide surface (31a) and the inner side is a positioning surface (31b). The inner upper and lower ends of the main cover (28) are provided with three front and rear limiting blocks (32), and the upper shell (2) and the lower shell (3) are provided with three L-shaped front and rear limiting members (33). Each front and rear limiting member (33) corresponds to each front and rear limiting block (32) and they are arranged in a cooperative manner.

8. The safety relay as described in claim 7, characterized in that: Both the upper housing (2) and the lower housing (3) are provided with two left and right limiting strips (35), and each of the left and right limiting strips (35) is attached to the inner wall of each of the side covers (29).

9. The safety relay as described in claim 8, characterized in that: It also includes a slider (36) made of elastic material, the slider (36) has an opening (37) in the middle, and two connecting rods (38) are provided at the opening (37). The connecting ends of each connecting rod (38) are respectively connected to the upper and lower ends of the opening (37), and the extended ends of each connecting rod (38) are suspended and provided with a positioning rod (39). Both the upper rear baffle (6) and the lower rear baffle (16) are provided with through holes (50), and each of the positioning rods (39) is inserted into each of the through holes (50).

10. The safety relay as described in claim 9, characterized in that: It also includes a PCBA board (51) disposed within the lower housing (3); The front half of the lower plate (15) is provided with two buckles (52) for limiting the two sides of the PCBA board (51). The inner side of the lower rear baffle (16) is provided with two limiting platforms (53) for positioning the PCBA board (51). The anti-reverse mounting block (57) is provided inside the lower rear baffle (16) and located at the anti-reverse mounting port (58) of the PCBA board (51). The front half of the PCBA board (51) is provided with wiring terminals (59) on both sides, and each wiring terminal (59) is located between the upper rear baffle (6) and the lower plate (15).

Images