Pluggable SPD

Abstract

The utility model discloses a pluggable SPD, which comprises a base and a protection module installed on the base in a pluggable mode, the protection module comprises a module shell and a module frame installed on the inner side of the module shell, piezoresistors are installed on the two sides of the module frame, a first pin and a second pin are arranged on each piezoresistor, and the first pin and the second pin are connected with the module shell. A plurality of electrode pins are arranged at the bottom of the protection module, conducting strips are installed between the first pin and the adjacent electrode pins, tripping plates are installed on the two sides of the module frame in a sliding mode, shifting blocks used for pushing the conducting strips are arranged on one sides of the tripping plates, and limiting grooves are formed in the module frame; according to the utility model, the two sides of the module frame are respectively provided with a piezoresistor, a tripping plate, a tension spring and a conducting strip, so that a single protection module can protect two poles, thereby greatly reducing the size of the protection module, and improving the reliability of the module. The overall size of the surge protector is reduced, and the installation space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of surge protectors, and particularly relates to a pluggable SPD. Background Technique

[0002] SPD refers to a surge protector, which is a device used to protect electrical equipment from lightning or other transient overvoltages. When an instantaneous high voltage or current appears in an electrical system, the surge protector can quickly respond, limit the overvoltage within a safe level, and safely discharge the overcurrent to the ground, thereby protecting the electrical equipment from damage.

[0003] The existing surge protectors can be divided into 1P, 2P, 3P and 4P according to the number of protection poles. Corresponding numbers of protection modules will be installed according to the number of protection poles. Therefore, when the number of protection poles of the surge protector is multiple, it will cause the surge protector to be relatively large in size. However, the space in the distribution box is relatively limited, which makes the installation subject to certain restrictions. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pluggable SPD to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pluggable SPD, including a base and a protection module that can be pluggably installed on the base. The protection module includes a module housing and a module frame installed inside the module housing. Varistors are installed on both sides of the module frame. The varistors are respectively provided with a first pin and a second pin. A plurality of electrode pins are provided at the bottom of the protection module. A conductive sheet is installed between the first pin and the adjacent electrode pin. A release plate is slidably installed on both sides of the module frame. A push block for pushing the conductive sheet is provided on one side of the release plate. A limiting groove is provided on the module frame. A limiting block that is integrally formed with the module frame and is slidably connected to the limiting groove is provided on one side of the module frame. Springs are also installed on both sides of the module frame. One end of the spring is provided with an L-shaped rod, and the other end of the spring is provided with a hook. Through holes and L-shaped grooves are provided on the release plate. The L-shaped rod passes through the through hole and is stuck in the L-shaped groove. A hook groove for limiting the hook is provided on the module frame.

[0006] As a preferred solution of the utility model, the conductive sheet and the first pin are connected by low-temperature solder.

[0007] As a preferred solution of the utility model, a second clamping block is provided on the outside of the module frame, and a second clamping groove that matches the second clamping block is provided on the module housing.

[0008] As a preferred embodiment of the present utility model, a plurality of ridges are provided on the outer side of the protection module, an indicating hole is penetratingly provided on the protection module, and an indicating plate corresponding to the indicating hole is integrally formed at one end of the release plate.

[0009] As a preferred embodiment of the present utility model, the base includes a base housing and a base bottom case installed at the bottom of the base housing. A communication interface is installed on the outer side of the base bottom case, a touch switch is installed on the base bottom case, the touch switch penetrates through the base housing and extends to the outer side of the base housing, and the touch switch is electrically connected to the communication interface.

[0010] As a preferred embodiment of the present utility model, a through hole corresponding to the touch switch is provided on the module frame, and a blocking block capable of blocking the through hole is provided on the release plate.

[0011] As a preferred embodiment of the present utility model, a jack is penetratingly provided on the base housing, a terminal post is installed on the base bottom case, an extension leg is connected to one side of the terminal post, and an elastic leg corresponding to the jack is provided on the extension leg.

[0012] As a preferred embodiment of the present utility model, a first clamping block is provided on the outer side of the base bottom case, and a first clamping groove matched with the first clamping block is provided on the base housing.

[0013] As a preferred embodiment of the present utility model, a lock catch is provided on the outer side of the module housing, a lock groove matched with the lock catch is provided on the inner side of the base housing, a positioning strip is integrally formed on the inner side wall of the base housing, a positioning groove is provided on the module housing, a positioning block is provided on one side of the module frame, and a positioning groove matched with the positioning block is provided on the base housing.

[0014] As a preferred embodiment of the present utility model, an anti-misalignment block is provided on one side of the module frame, and an anti-misalignment groove corresponding to the anti-misalignment block is provided on the base housing.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By installing varistors, release plates, tension springs and conductive sheets on both sides of the module frame, the present utility model enables a single protection module to protect two pole numbers, thereby greatly reducing the volume of the protection module, reducing the overall volume of the surge protector, saving installation space, and ensuring stable connection of the electrode pins without loosening under the conditions of high-current impact and strong vibration through the provided elastic legs, lock catches, lock grooves, positioning grooves, positioning blocks, positioning strips and positioning grooves. At the same time, through the provided indicating holes, indicating plates, communication interfaces and touch switches, it has the functions of status indication and remote alarm for remote signaling failure. Description of the Drawings

[0016] Figure 1Schematic diagram of the three-dimensional structure of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 exploded view;

[0018] Figure 3 Schematic diagram of the structure at the bottom of the protection module of the present utility model;

[0019] Figure 4 Schematic diagram of the structure of the present utility model after removing the module housing of the protection module;

[0020] Figure 5 For the present utility model Figure 4 schematic diagram of the structure after removing the release plate and the tension spring;

[0021] Figure 6 Schematic diagram of the structure of the release plate of the present utility model;

[0022] Figure 7 Schematic diagram of the structure of the tension spring of the present utility model;

[0023] Figure 8 Schematic diagram of the structure of the module frame of the present utility model;

[0024] Figure 9 Schematic diagram of the structure of the module housing of the present utility model;

[0025] Figure 10 Schematic diagram of the structure of the base of the present utility model;

[0026] Figure 11 Schematic diagram of the structure of the base housing of the present utility model;

[0027] Figure 12 Schematic diagram of the structure of the base bottom shell of the present utility model.

[0028] In the figure: 1. Base; 2. Protection module; 3. Communication interface; 4. Indication hole; 5. Rib; 6. Lock; 7. First clamping block; 8. First clamping groove; 9. Anti-misalignment groove; 10. Tactile switch; 11. Jack; 12. Alignment groove; 13. Positioning strip; 14. Positioning groove; 15. Module housing; 16. Second clamping groove; 17. Second clamping block; 18. Anti-misalignment block; 19. Perforation; 20. Module frame; 21. Alignment block; 22. Electrode pin; 23. Conductive sheet; 24. L-shaped groove; 25. L-shaped rod; 26. Release plate; 27. Indication plate; 28. Tension spring; 29. Hook; 30. Block; 31. Varistor; 32. First pin; 33. Limiting groove; 34. Limiting block; 35. Through hole; 36. Dial block; 37. Hook groove; 38. Lock groove; 39. Base housing; 40. Base bottom shell; 41. Elastic foot; 42. Extension foot; 43. Terminal; 44. Second pin. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1 to 12, the present utility model provides a technical solution: a pluggable SPD, including a base 1 and a protection module 2 that can be pluggably installed on the base 1. The protection module 2 includes a module housing 15 and a module frame 20 installed inside the module housing 15. Both the module frame 20 and the module housing 15 are integrally formed structures. Varistors 31 are installed on both sides of the module frame 20. By installing varistors 31, a release plate 26, a tension spring 28, and a conductive sheet 23 on both sides of the module frame 20, a single protection module 2 can protect two poles, thus greatly reducing the volume of the protection module 2 and making the overall volume of the surge protector smaller. When an abnormal situation occurs, such as being struck by lightning or a power system failure, the varistor 31 will be conducted and generate heat. Since the varistor 31 is a prior art, it will not be elaborated in detail here. The varistor 31 is provided with a first pin 32 and a second pin 44. The bottom of the protection module 2 is provided with a plurality of electrode pins 22. A conductive sheet 23 is installed between the first pin 32 and the adjacent electrode pin 22. Release plates 26 are slidably installed on both sides of the module frame 20. One side of the release plate 26 is provided with a slider 36 for pushing the conductive sheet 23. The module frame 20 is provided with a limiting groove 33, and the limiting groove 33 and a limiting block 34 are used to guide the release plate 26 to make the release plate 26 move more stably. A limiting block 34 that is integrally formed with the module frame 20 and is slidably connected to the limiting groove 33 is provided on one side of the module frame 20. Tension springs 28 are also installed on both sides of the module frame 20. When an abnormal situation occurs, the varistor 31 generates heat, and the heat is transferred to the first pin 32 and the conductive sheet 23 to melt the low-temperature solder. Subsequently, the tension spring 28 resets and drives the release plate 26 to move through an L-shaped rod 25. The release plate 26 drives the slider 36 to move, and the slider 36 pushes the conductive sheet 23 to make the conductive sheet 23 bend, so that the conductive sheet 23 is separated from the first pin 32, thereby realizing tripping and disconnecting the circuit. One end of the tension spring 28 is provided with an L-shaped rod 25, and the other end of the tension spring 28 is provided with a hook 29. The release plate 26 is provided with a through hole 35 and an L-shaped groove 24. The L-shaped rod 25 passes through the through hole 35 and is stuck in the L-shaped groove 24. The tension spring 28 can drive the release plate 26 through the L-shaped rod 25. The module frame 20 is provided with a hook groove 37 for limiting the hook 29. The hook groove 37 is used to limit the hook 29, thereby playing a role in limiting the tension spring 28 and preventing the tension spring 28 from shifting.

[0031] Among them, the conductive sheet 23 and the first pin 32 are connected by low-temperature solder. When an abnormal situation occurs, the varistor 31 will generate heat, and the heat is transferred to the first pin 32 to melt the low-temperature solder, thus facilitating the separation of the conductive sheet 23 from the first pin 32.

[0032] Among them, a second clamping block 17 is provided on the outer side of the module frame 20, and a second clamping groove 16 matching with the second clamping block 17 is provided on the module housing 15. The cooperation between the second clamping groove 16 and the second clamping block 17 is used to connect and fix the module housing 15 and the module frame 20.

[0033] Among them, a plurality of convex strips 5 are provided on the outer side of the protection module 2. The convex strips 5 are used to increase the friction force to prevent the staff from slipping when plugging and unplugging the protection module 2. An indicating hole 4 penetrates through the protection module 2. One end of the release plate 26 is integrally formed with an indicating plate 27 corresponding to the indicating hole 4. When a release occurs, the release plate 26 will drive the indicating plate 27 to move, and the indicating plate 27 moves away from the indicating hole 4, making it impossible to observe the indicating plate 27 through the indicating hole 4, thereby indicating that a release has occurred to achieve the status indication function.

[0034] Among them, the base 1 includes a base housing 39 and a base bottom shell 40 installed at the bottom of the base housing 39. Both the base housing 39 and the base bottom shell 40 are integrally formed structures. A communication interface 3 is installed on the outer side of the base bottom shell 40, and a touch switch 10 is installed on the base bottom shell 40. When the touch switch 10 generates an electrical signal, it will be transmitted to the communication interface 3, and the communication interface 3 is connected to an external signal line, and the electrical signal is transmitted through the external signal line to achieve the function of remote alarm for remote signaling failure. The touch switch 10 passes through the base housing 39 and extends to the outside of the base housing 39, and the touch switch 10 is electrically connected to the communication interface 3.

[0035] Among them, a through hole 19 corresponding to the touch switch 10 is provided on the module frame 20. When the blocking block 30 does not block the through hole 19, the pressing part of the touch switch 10 can enter the through hole 19 and bounce up. A blocking block 30 capable of blocking the through hole 19 is provided on the release plate 26. When the protection module 2 is inserted into the base 1, the blocking block 30 will press the touch switch 10, and the touch switch 10 will emit an electrical signal.

[0036] Among them, a jack 11 penetrates through the base housing 39. The jack 11 facilitates the insertion of the electrode pin 22 into the base 1. A wiring post 43 is installed on the base bottom shell 40. The wiring post 43 is used to connect to the outside. One side of the wiring post 43 is connected with an extension pin 42, and an elastic pin 41 corresponding to the jack 11 is provided on the extension pin 42. The elastic pin 41 is used to clamp the electrode pin 22 to make its installation firm.

[0037] Among them, a first clamping block 7 is provided on the outer side of the base bottom shell 40, and a first clamping groove 8 matching with the first clamping block 7 is provided on the base housing 39. The cooperation between the first clamping block 7 and the first clamping groove 8 is used to connect and fix between the base housing 39 and the base bottom shell 40.

[0038] Among them, a lock buckle 6 is provided on the outer side of the module shell 15, and a lock groove 38 matching the lock buckle 6 is provided on the inner side of the base shell 39. The lock buckle 6 and the lock groove 38 can cooperate to fix the module shell 15, and the alignment groove 12 and the alignment block 21 are interference fit, which can fix the module frame 20. At the same time, the positioning strip 13 and the positioning groove 14 can cooperate to limit the module shell 15, so that the protection module 2 can be fixed in multiple ways. In addition, the elastic foot 41 has a clamping effect on the electrode foot 22, so that the electrode foot 22 can be kept stable and will not loosen under large current shock and strong vibration, thereby ensuring its reliability. The inner side wall of the base shell 39 is integrally formed with a positioning strip 13, the module shell 15 is provided with a positioning groove 14, one side of the module frame 20 is provided with an alignment block 21, and the base shell 39 is provided with an alignment groove 12 matching the alignment block 21.

[0039] Among them, an anti-error block 18 is provided on one side of the module frame 20, and an anti-error groove 9 corresponding to the anti-error block 18 is provided on the base shell 39. The cross-sections of the anti-error groove 9 and the anti-error block 18 are irregular shapes, so that only after the anti-error block 18 is aligned with the anti-error groove 9, the protection module 2 can be inserted into the base 1, thereby playing an anti-error insertion role.

[0040] Specifically, when installing the protection module 2, align the anti-error block 18 with the first card slot 8, and insert the protection module 2 into the base 1. After the protection module 2 is installed in place, the touch switch 10 will be pressed by the block 30, and the touch switch 10 will generate an electrical signal and transmit it to the communication interface 3. The communication interface 3 transmits the electrical signal through an external signal line to achieve remote communication. When an abnormal situation occurs, the varistor 31 will be turned on and generate heat, and the heat will be transferred to the first pin 32 and the conductive sheet 23 to melt the low-temperature solder. The conductive sheet 23 and the first pin 32 are no longer fixed, and then the tension spring 28 is reset and pulls the release plate 26 to move through the L-shaped rod 25, and the release plate 26 drives the dial The block 36 moves, and the shifting block 36 pushes the conductive sheet 23 to separate the conductive sheet 23 from the first pin 32, thereby achieving tripping and disconnecting the circuit. The tripping plate 26 also drives the block 30 and the indicator plate 27 to move during the movement. The indicator plate 27 leaves the indicator hole 4, so that the indicator plate 27 cannot be observed through the indicator hole 4, indicating that a tripping situation has occurred, so as to realize the status indication function. The block 30 leaves the perforation 19, and the block 30 no longer presses the touch switch 10. The touch switch 10 will pop up to generate an electrical signal, and transmit the electrical signal to the communication interface 3. The communication interface 3 transmits the electrical signal through the external signal line to realize the remote alarm function of remote signal failure.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0042] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0043] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pluggable SPD, comprising a base (1), and a protection module (2) pluggably mounted on the base (1), wherein the protection module (2) comprises a module housing (15) and a module frame (20) mounted inside the module housing (15), characterized in that: Varistors (31) are installed on both sides of the module frame (20), and the varistor (31) is provided with a first pin (32) and a second pin (44). A plurality of electrode pins (22) are provided at the bottom of the protection module (2), and a conductive sheet (23) is installed between the first pin (32) and an adjacent electrode pin (22). A release plate (26) is slidably installed on both sides of the module frame (20), and a shifting block (36) for pushing the conductive sheet (23) is provided on one side of the release plate (26). A limit groove (33) is provided on the module frame (20). ), a limit block (34) slidably connected to the limit groove (33) is integrally formed on one side of the module frame (20), tension springs (28) are also installed on both sides of the module frame (20), one end of the tension spring (28) is provided with an L-shaped rod (25), and the other end of the tension spring (28) is provided with a hook (29), the release plate (26) is provided with a through hole (35) and an L-shaped groove (24), the L-shaped rod (25) passes through the through hole (35) and is inserted into the L-shaped groove (24), and the module frame (20) is provided with a hook groove (37) for limiting the hook (29).

2. A pluggable SPD according to claim 1, characterized in that: The conductive sheet (23) is connected to the first pin (32) via low-temperature solder.

3. A pluggable SPD according to claim 1, characterized in that: A second card block (17) is provided on the outer side of the module frame (20), and a second card slot (16) matching with the second card block (17) is provided on the module housing (15).

4. A pluggable SPD according to claim 1, characterized in that: The outer side of the protection module (2) is provided with a plurality of convex strips (5), the protection module (2) is provided with an indication hole (4) extending through it, and an indication plate (27) corresponding to the indication hole (4) is integrally formed at one end of the trip plate (26).

5. A pluggable SPD according to claim 1, characterized in that: The base (1) comprises a base shell (39) and a base bottom shell (40) installed at the bottom of the base shell (39); a communication interface (3) is installed on the outer side of the base bottom shell (40); a touch switch (10) is installed on the base bottom shell (40); the touch switch (10) passes through the base shell (39) and extends to the outer side of the base shell (39); the touch switch (10) is connected to the communication interface (3) by wires.

6. A pluggable SPD according to claim 5, characterized in that: The module frame (20) is provided with a through hole (19) corresponding to the light touch switch (10), and the trip plate (26) is provided with a stopper (30) capable of blocking the through hole (19).

7. A pluggable SPD according to claim 5, characterized in that: The base shell (39) is provided with a socket (11) extending therethrough, the base bottom shell (40) is provided with a terminal (43), one side of the terminal (43) is connected to an extension leg (42), and the extension leg (42) is provided with an elastic leg (41) corresponding to the socket (11).

8. The pluggable SPD according to claim 5, characterized in that: A first clamping block (7) is provided on the outer side of the base bottom shell (40), and a first clamping slot (8) matching with the first clamping block (7) is provided on the base outer shell (39).

9. A pluggable SPD according to claim 5, characterized in that: The outer side of the module shell (15) is provided with a lock buckle (6), the inner side of the base shell (39) is provided with a lock groove (38) matched with the lock buckle (6), the inner side wall of the base shell (39) is integrally formed with a positioning strip (13), the module shell (15) is provided with a positioning groove (14), one side of the module frame (20) is provided with a positioning block (21), and the base shell (39) is provided with an alignment groove (12) matched with the alignment block (21).

10. The pluggable SPD according to claim 5, characterized in that: An anti-error block (18) is provided on one side of the module frame (20), and an anti-error groove (9) corresponding to the anti-error block (18) is provided on the base shell (39).

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