A short-circuit protection device convenient to install and fix

Abstract

This utility model discloses a short-circuit protection device that is easy to install and fix, relating to the field of electrical safety technology. It includes a protection device body, a switch on one side of the protection device body, wiring terminals on both sides of the protection device body, and a mounting plate on one side of the protection device body. In this utility model, the protection device body is supported and fixed by a first telescopic rod and a second spring, thereby preventing multiple extension rods from falling off. Through the synchronous adjustment of multiple gripper assemblies, the mounting plate can accommodate different models of protection device bodies, improving applicability. Simultaneously, the protection device body is pushed to align its insertion hole with the insertion rod for insertion. Then, a synchronously controlled electric push rod drives the insertion rod to move into the insertion hole. Subsequently, through the synchronous operation of multiple miniature cylinders in the mounting slots, multiple support plates move outward, thereby limiting the installation at the four corners of the protection device body.

Description

Technical Field

[0001] This utility model relates to the field of electrical safety technology, and more specifically, to a short-circuit protection device that is easy to install and fix. Background Technology

[0002] A short-circuit protection device is an electrical safety device used to detect short-circuit faults in a circuit and quickly disconnect the faulty circuit. Its core function is to trigger a protective action through a specific detection mechanism when a short circuit occurs, so as to prevent excessive current from damaging electrical equipment, causing fires, or endangering personal safety.

[0003] Traditional short-circuit protection devices are typically installed using a fully bolted integrated assembly, which makes it difficult to disassemble and repair them individually. Furthermore, with long-term use, wear on the bolt structure makes it difficult to effectively maintain the stability of the device, affecting its safety and reliability. Utility Model Content

[0004] The purpose of this utility model is to provide a short-circuit protection device that is easy to install and fix, and can achieve the purpose of separate assembly and maintenance of the short-circuit protection device and stable installation.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a short-circuit protection device that is easy to install and fix, including a protection device body, a switch on one side of the protection device body, wiring terminals on both sides of the protection device body, a mounting plate on one side of the protection device body, claw brackets fixedly mounted on both sides of the mounting plate, and two square grooves opened at both ends of the mounting plate, in which claw assemblies are installed.

[0006] The gripper assembly includes a spring, a clamping block fixedly mounted on the bottom of the spring, sliding grooves on both sides of the inner side of the square groove, a damper fixedly mounted on the top of the inner side of the sliding groove, a slider fixedly mounted on the bottom of the damper, the inner side of the slider fixedly connected to the clamping block, a through groove on one side of the clamping block, a support telescopic rod 1 fixedly mounted in the through groove, a spring 2 sleeved on the outer side of the support telescopic rod 1, and the same extension rod fixedly mounted on one side of the support telescopic rod 1 and the spring 2, and hidden grooves on the four corners of the mounting plate, with an expansion assembly installed in the hidden groove.

[0007] Furthermore, the diameter expansion assembly includes an electric push rod, one end of which is fixedly connected to a plug rod.

[0008] Furthermore, four mounting slots are provided on the outer side of the insertion rod, and two miniature cylinders are fixedly installed in the mounting slots.

[0009] Furthermore, a support plate is fixedly connected to one end of the miniature cylinder, and an insertion hole is provided on the body of the protective device at the position corresponding to the insertion rod.

[0010] Furthermore, a slot assembly is fixedly installed on the side of the mounting plate near the body of the protective device, and the slot assembly includes a fixing block.

[0011] Furthermore, a slot hole is provided on one side of the fixing block, and slide rails are provided on both inner sides of the fixing block.

[0012] Furthermore, a limiting block is slidably connected inside the slide rail, and a support rod is fixedly installed on one side of the limiting block.

[0013] Furthermore, a limiting ring is fixedly installed on the side of the support rod away from the slot hole, a second supporting telescopic rod is fixedly installed on one side of the support rod, a buffer spring is fixedly connected to one side of the limiting ring, and one side of the buffer spring is fixedly connected to the inner side of the slide rail.

[0014] Furthermore, a locking block assembly is fixedly installed on one side of the protective device body at a position corresponding to the protective device body, and the locking block assembly includes a fixing plate.

[0015] Furthermore, a return spring is fixedly connected to one side of the fixed disk, and a sliding sleeve is fixedly connected to the other side of the return spring. A locking head is slidably connected inside the sliding sleeve, and one end of the locking head is fixedly connected to the fixed disk.

[0016] Compared to existing technologies, the advantages of this solution are as follows:

[0017] 1. This solution, by setting up claw frames, gripper assemblies, and diameter expansion assemblies, facilitates the normal operation of the fixed protection device body during installation. The connection terminals, along with the claw frames on both sides of the mounting plate, allow the protection device body to be placed in place, driving the extension rods at both ends of the mounting plate to move. Supported by the first telescopic rod and the second spring, the extension rods prevent the protection device body from falling off. Simultaneously, the support of the first spring and the buffer protection of the damper allow the clamping block to stably lift the protection device body. The sliding groove limits the slider, and the synchronous adjustment of multiple gripper assemblies allows the mounting plate to accommodate different models of protection devices, improving applicability. At the same time, pushing the protection device body aligns its insertion hole with the insertion rod for insertion, then synchronously controlling the electric push rod to drive the insertion rod into the insertion hole. Subsequently, the synchronous operation of multiple miniature cylinders in the mounting slots moves multiple support plates outwards, thereby limiting the installation at the four corners of the protection device body.

[0018] 2. This solution incorporates a slot assembly and a block assembly. When fixing the protective device body, aligning the block head with the slot hole, the protective device body drives the fixing disc to push the block head into place. The limiting block is then moved inwards towards the slide rail. The second support telescopic rod stabilizes the horizontal movement of the support rod within the slide rail, while the buffer spring prevents excessive impact from the limiting block from damaging components. As the block head moves within the slot hole, the limiting block is positioned between the block head and the sliding sleeve, allowing for quick installation of the protective device body. Pressing the protective device body again causes the sliding sleeve to move and press the limiting block again, allowing the sliding sleeve to enclose the block head, facilitating its disengagement and making it easy to remove the protective device body. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram illustrating this utility model;

[0020] Figure 2 This is a schematic diagram illustrating the structure of the gripper assembly of this utility model;

[0021] Figure 3 This is a schematic diagram illustrating the structure of the diameter expansion assembly of this utility model;

[0022] Figure 4 This is a structural schematic diagram illustrating the disassembled card slot assembly of this utility model;

[0023] Figure 5 This is a structural diagram illustrating the disassembly of the card block assembly of this utility model.

[0024] In the diagram: 1. Protective device body; 2. Switch; 3. Terminal; 4. Mounting plate; 5. Claw holder; 6. Square groove; 7. Claw assembly; 701. Spring 1; 702. Clamping block; 703. Slide groove; 704. Damper; 705. Sliding block; 706. Through groove; 707. Support telescopic rod 1; 708. Spring 2; 709. Extension rod; 8. Concealed groove; 9. Expansion assembly; 901. Electric push rod; 902. Insert rod; 903. Safety pin; 904. Slot; 905. Miniature cylinder; 10. Support plate; 11. Insertion hole; 12. Slot assembly; 1101. Fixing block; 1102. Slot hole; 1103. Slide rail; 1104. Limiting block; 1105. Support rod; 1106. Limiting ring; 1107. Support telescopic rod two; 1108. Buffer spring; 12. Slot assembly; 1201. Fixing plate; 1202. Return spring; 1203. Sliding sleeve; 1204. Slot head. Detailed Implementation

[0025] The utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are only descriptive and are not intended to limit the scope of protection of this utility model.

[0026] Example 1: A short-circuit protection device that is easy to install and fix, such as Figure 1-5 As shown, it includes a protection device body 1, a switch 2 on one side of the protection device body 1, wiring terminals 3 on both sides of the protection device body 1, a mounting plate 4 on one side of the protection device body 1, claw brackets 5 fixedly mounted on both sides of the mounting plate 4, and two square grooves 6 opened at both ends of the mounting plate 4, with claw assemblies 7 installed in the square grooves 6.

[0027] The gripper assembly 7 includes a spring 701, a gripper block 702 fixedly mounted on the bottom of the spring 701, sliding grooves 703 respectively opened on both sides of the square groove 6, a damper 704 fixedly mounted on the top of the sliding groove 703, a slider 705 fixedly mounted on the bottom of the damper 704, the inner side of the slider 705 is fixedly connected to the gripper block 702, a through groove 706 is opened on one side of the gripper block 702, a support telescopic rod 707 is fixedly mounted in the through groove 706, a spring 708 is sleeved on the outer side of the support telescopic rod 707, and the same extension rod 709 is fixedly mounted on one side of the support telescopic rod 707 and the spring 708, and a hidden groove 8 is opened at each of the four corners of the mounting plate 4, and an expansion assembly 9 is installed in the hidden groove 8.

[0028] In practical applications, by providing the gripper assembly 7, when installing the protective device body 1, the protective device body 1 can drive the extension rods 709 at both ends of the mounting plate 4 to move. By supporting the telescopic rod 707 and fixing it with the spring 708, the multiple extension rods 709 can prevent the protective device body 1 from falling off. At the same time, through the support of the spring 701 and the buffer protection of the damper 704, the clamping block 702 can stably lift the protective device body 1. By limiting the slider 705 through the slide groove 703, the gripper assembly 7 can cope with different models of protective device bodies 1, thus improving applicability.

[0029] Example 2: A short-circuit protection device that is easy to install and fix, which differs from Example 1 in that, as shown in Example 1... Figure 2-3 As shown, the diameter expansion assembly 9 includes an electric push rod 901, one end of which is fixedly connected to an insertion rod 902. Four mounting slots 903 are provided on the outer side of the insertion rod 902. Two miniature cylinders 904 are fixedly installed in the mounting slots 903. One end of the miniature cylinder 904 is fixedly connected to a support plate 905. An insertion hole 10 is provided on the protective device body 1 at the position corresponding to the insertion rod 902. A slot assembly 11 is fixedly installed on the middle part of the mounting plate 4 near the side of the protective device body 1. The slot assembly 11 includes a fixing block 1101.

[0030] In practical applications, by setting up the diameter expansion component 9, the protective device body 1 is pushed to align its insertion hole 10 with the insertion rod 902 to achieve insertion. Then, the electric push rod 901 is synchronously controlled to drive the insertion rod 902 to move into the insertion hole 10. After it is inside, the miniature cylinders 904 of multiple mounting slots 903 operate synchronously to drive multiple support plates 905 to move outward, thereby achieving diameter expansion, positioning and clamping.

[0031] Example 3: A short-circuit protection device that is easy to install and fix, which differs from Example 2 in that, as Figure 4 and 5 As shown, a slot hole 1102 is provided on one side of the fixing block 1101, and slide rails 1103 are respectively provided on both inner sides of the fixing block 1101. A limit block 1104 is slidably connected in the slide rail 1103. A support rod 1105 is fixedly installed on one side of the limit block 1104. A limit ring 1106 is fixedly installed on the side of the support rod 1105 away from the slot hole 1102. A second support telescopic rod 1107 is fixedly installed on one side of the support rod 1105. A buffer spring 1108 is fixedly connected to one side of the limit ring 1106. One side of the buffer spring 1108 is fixedly connected to the inner side of the slide rail 1103. A locking block assembly 12 is fixedly installed on one side of the protection device body 1 at the position corresponding to the protection device body 1. The locking block assembly 12 includes a fixed plate 1201. A return spring 1202 is fixedly connected to one side of the fixed plate 1201. A sliding sleeve 1203 is fixedly connected to the other side of the return spring 1202. A locking block head 1204 is slidably connected inside the sliding sleeve 1203. One end of the locking block head 1204 is fixedly connected to the fixed plate 1201.

[0032] In practical applications, by setting up the slot assembly 11 and the block assembly 12, when the protective device body 1 is fixed and the block head 1204 is aligned with the slot hole 1102, the block head 1204 is pushed into the slot via the fixing plate 1201. The limiting block 1104 is driven to retract into the slide rail 1103. The second support telescopic rod 1107 can stabilize the horizontal movement of the support rod 1105, and the buffer spring 1108 can prevent the limiting block 1104 from damaging the parts due to excessive impact. As the block head 1204 moves, the limiting block 1104 can be limited between the block head 1204 and the slide sleeve 1203, thereby enabling the protective device body 1 to be installed quickly.

[0033] Working principle: When installing the protection device body 1, the connection terminal 3, in conjunction with the claw brackets 5 on both sides of the mounting plate 4, facilitates the normal operation of the fixed protection device body 1. The protection device body 1 is inserted and fixed by the support of the first telescopic rod 707 and the second spring 708. The protection device body 1 can drive the extension rods 709 at both ends of the mounting plate 4 to move. The sliding grooves 703 at both ends of the mounting plate 4 limit the sliding block 705. Through the synchronous adjustment of multiple claw assemblies 7, the mounting plate 4 can accommodate different models of protection device bodies 1, pushing the protection device body 1 so that its insertion hole 10 aligns with the insertion rod 902 for insertion. Subsequently, the electric push rod 901 is synchronously controlled to drive and move the insertion rod 902 into the insertion hole 10. Then, through the synchronous operation of the miniature cylinders 904 of multiple mounting slots 903, multiple support plates 905 are moved outwards, thereby enabling the protection device to... The four corners of the main body 1 are installed and limited. At the same time, the locking head 1204 and the slot hole 1102 are aligned. When the fixing plate 1201 pushes the locking head 1204 to be inserted, the limiting block 1104 is driven to retract into the slide rail 1103. The second support telescopic rod 1107 can stabilize the horizontal movement of the support rod 1105 in the slide rail 1103. As the locking head 1204 moves in the slot hole 1102, the limiting block 1104 can be limited between the locking head 1204 and the sliding sleeve 1203, so that the protective device main body 1 can be quickly installed. Pressing the protective device main body 1 again causes the sliding sleeve 1203 to be driven to move and squeeze the limiting block 1104 again, so that the sliding sleeve 1203 can fit the locking head 1204. After removal, the sliding sleeve 1203 moves away from the locking head 1204 due to the elastic force of the return spring 1202. Removing the protective device main body 1 at the same time facilitates the reinstallation of the device.

[0034] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A short-circuit protection device that is easy to install and fix, characterized in that, include: The protective device body (1) has a switch (2) on one side, wiring terminals (3) on both sides of the protective device body (1), a mounting plate (4) on one side of the protective device body (1), claw brackets (5) fixedly mounted on both sides of the mounting plate (4), and two square slots (6) opened at both ends of the mounting plate (4), with claw assemblies (7) installed in the square slots (6). The gripper assembly (7) includes a spring (701), a clamping block (702) is fixedly mounted on the bottom of the spring (701), a sliding groove (703) is opened on both sides of the square groove (6), a damper (704) is fixedly mounted on the top of the sliding groove (703), a slider (705) is fixedly mounted on the bottom of the damper (704), the inner side of the slider (705) is fixedly connected to the clamping block (702), a through groove (706) is opened on one side of the clamping block (702), a support telescopic rod (707) is fixedly mounted in the through groove (706), a spring (708) is sleeved on the outer side of the support telescopic rod (707), the same extension rod (709) is fixedly mounted on one side of the support telescopic rod (707) and the spring (708), and a hidden groove (8) is opened on the four corners of the mounting plate (4), and an expansion assembly (9) is installed in the hidden groove (8).

2. A short-circuit protection device that is easy to install and fix according to claim 1, characterized in that, The diameter expansion assembly (9) includes an electric push rod (901), one end of which is fixedly connected to a plug rod (902).

3. A short-circuit protection device that is easy to install and fix according to claim 2, characterized in that, The outer side of the insertion rod (902) is provided with four mounting slots (903), and two miniature cylinders (904) are fixedly installed in the mounting slots (903).

4. A short-circuit protection device that is easy to install and fix according to claim 3, characterized in that, One end of the miniature cylinder (904) is fixedly connected to a support plate (905), and the protective device body (1) has an insertion hole (10) at the position corresponding to the insertion rod (902).

5. A short-circuit protection device that is easy to install and fix according to claim 1, characterized in that, A slot assembly (11) is fixedly installed on the side of the middle of the mounting plate (4) near the protective device body (1), and the slot assembly (11) includes a fixing block (1101).

6. A short-circuit protection device that is easy to install and fix according to claim 5, characterized in that, The fixing block (1101) has a slot hole (1102) on one side, and slide rails (1103) are respectively provided on the inner two sides of the fixing block (1101).

7. A short-circuit protection device that is easy to install and fix according to claim 6, characterized in that, A limiting block (1104) is slidably connected inside the slide rail (1103), and a support rod (1105) is fixedly installed on one side of the limiting block (1104).

8. A short-circuit protection device that is easy to install and fix according to claim 7, characterized in that, A limiting ring (1106) is fixedly installed on the side of the support rod (1105) away from the slot hole (1102). A second support telescopic rod (1107) is fixedly installed on one side of the support rod (1105). A buffer spring (1108) is fixedly connected to one side of the limiting ring (1106). One side of the buffer spring (1108) is fixedly connected to the inner side of the slide rail (1103).

9. A short-circuit protection device that is easy to install and fix according to claim 1, characterized in that, A locking block assembly (12) is fixedly installed on one side of the protective device body (1) at a position corresponding to the protective device body (1). The locking block assembly (12) includes a fixing plate (1201).

10. A short-circuit protection device that is easy to install and fix according to claim 9, characterized in that, A return spring (1202) is fixedly connected to one side of the fixed disk (1201), and a sliding sleeve (1203) is fixedly connected to the other side of the return spring (1202). A locking head (1204) is slidably connected inside the sliding sleeve (1203), and one end of the locking head (1204) is fixedly connected to the fixed disk (1201).

Images