Current-limiting protection device

Abstract

The utility model discloses a current-limiting protection device, and relates to the current-limiting protection field, the current-limiting protection device comprises a device body and heat dissipation nets fixedly installed on the left side and the right side of the device body, transmission joints are fixedly installed on the left side and the right side of the top of the device body, and limiting assemblies located on the outer sides of the transmission joints are fixedly installed on the top of the device body. And a fixing assembly is movably installed on the rear side of the device body, the limiting assembly comprises a frame body, and the frame body is fixedly installed on the top of the device body. According to the utility model, the hand wheel is rotated to drive the rotating shaft to rotate, when the rotating shaft rotates, the sliding blocks outside the positive and negative threads symmetrically arranged on the two sides of the rotating shaft are driven to slide transversely, and the sliding blocks drive the clamping sleeve to slide and move inwards on the left side and the right side of the transmission joint, so that the clamping sleeve clamps a wire rod, and the wire rod is pressed through the latches; therefore, fastening and limiting protection of the wire rod is guaranteed, shaking is avoided, and the electrical connection quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of current -limiting protection, concretely relates to a current -limiting protection device. BACKGROUND

[0002] Current -limiting protection can effectively overcome the short -circuit current of traditional circuit breaker, air switch and monitoring equipment, cut off short -circuit current time long, the arc spark of short -circuit time generation is big, and the service life is short and so on, when short -circuit fault occurs, can with microsecond level speed fast restriction short -circuit current to realize arc extinguishing protection, thereby can significantly reduce electrical fire accident, guarantee the safety of personnel and property in use place.

[0003] The existing current -limiting protection device, such as patent number CN216391774U discloses a current -limiting protection device, through the guiding support mechanism set up, the access line of current -limiting protection device can be guided and supported, thereby can be convenient for external equipment to connect with current -limiting protection device through access line, but it can only guide and support the wire, cannot fasten and limit the wire and joint, and it can produce sway and influence the electrical connection quality, lacks protection to the joint, and it limits the adapter seat through locking pin, and it is inconvenient to disassemble and assemble the locking pin when adjusting, and the adjustment is not convenient enough. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0005] A current -limiting protection device, including device body and the heat dissipation net fixedly installed in the left and right sides of device body, the left and right sides of the top of device body are fixedly installed with transmission joint, the top of device body is fixedly installed with the limiting component located on the outside of transmission joint, the rear side of device body is movably installed with fixed component, the limiting component includes frame body, the frame body is fixedly installed on the top of device body, the inside of frame body is movably installed with pivot and guide rod, the left and right sides of the outside of pivot are provided with positive and negative screw threads, the outside of positive and negative screw threads and guide rod is movably installed with the sliding block symmetrically arranged on the left and right sides of transmission joint, the inside of sliding block is fixedly installed with clamping sleeve, the outside of pivot is fixedly installed with hand wheel.

[0006] The further improvement of the utility model technical scheme is that: the fixed component includes mounting bracket and clamping block, the inside of mounting bracket is provided with clamping groove, the upper and lower sides of mounting bracket are provided with limiting hole in communication with clamping groove, the rear side of device body is fixedly installed with clamping block, the inside of clamping block is provided with through hole, the inside of through hole is fixedly connected with guide column, the outside of guide column movably sleeves support spring and sliding plate, the outside of sliding plate is fixedly connected with clamping column penetrating clamping block, the clamping column is movably clamped in the inside of limiting hole.

[0007] The further improvement of the utility model technical scheme lies in that the inner side of the clamping sleeve is provided with clamping teeth.

[0008] The further improvement of the utility model technical scheme lies in that the guide rod and the rotating shaft are respectively arranged on the front and back sides of the transmission joint.

[0009] The further improvement of the utility model technical scheme lies in that the clamping sleeve corresponds to the position of the transmission joint.

[0010] The further improvement of the utility model technical scheme lies in that the sliding plate is symmetrically arranged on the upper and lower sides of the supporting spring.

[0011] The further improvement of the utility model technical scheme lies in that the outer end of the clamping column is provided with a spherical shape.

[0012] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0013] The utility model provides a kind of current limiting protection device, is driven the slider transverse sliding outside the positive and negative thread of the symmetry setting of its two sides by rotating hand wheel and driving rotating shaft, is slid inwards by the sliding block of clamping sleeve being driven on the left and right sides of transmission joint by the rotating shaft, so that clamping sleeve is clamped to wire, is pressed tightly to wire by clamping tooth, to guarantee wire fastening limit protection, avoid producing shake, guarantee electrical connection quality.

[0014] The utility model provides a kind of current limiting protection device, by pushing into the clamping slot from side by device body using its rear side clamping block, by extruding clamping column in the inner wall of clamping slot, so that clamping column is forced to push sliding plate along guide column and extrude supporting spring in through opening, so that clamping column is received in clamping block, further make clamping block be located in the transverse sliding adjustment installation position of device body in limit hole, by the elastic force of supporting spring when clamping column coincides limit hole, push sliding plate and make clamping column extrude and be limited in limit hole, further convenient for the position adjustment of device body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the current limiting protection device of the utility model.

[0016] Figure 2 It is the installation position schematic diagram of the fixed assembly of the utility model.

[0017] Figure 3 It is the structural schematic diagram of the limiting assembly of the utility model.

[0018] Figure 4 It is the structural schematic diagram of the fixed assembly of the utility model.

[0019] Figure 5 The utility model discloses a structure diagram of the clamping column.

[0020] In the figure: 1, device body; 2, transmission joint; 3, limiting assembly; 31, frame; 32, pivot; 33, positive and reverse thread; 34, guide rod; 35, sliding block; 36, clamping sleeve; 37, clamping tooth; 38, hand wheel; 4, fixed assembly; 41, mounting bracket; 42, clamping groove; 43, limiting hole; 44, clamping block; 45, through opening; 46, guide column; 47, supporting spring; 48, sliding plate; 49, clamping column; 5, heat dissipation net. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail as follows:

[0022] As Figures 1 to 5 shown, the utility model provides a current -limiting protection device, including device body 1 and fixedly installed in device body 1 left and right two sides's heat dissipation net 5, device body 1 top's left and right two sides all are fixedly installed with transmission joint 2, device body 1's top is fixedly installed with the limiting assembly 3 located transmission joint 2 outside, device body 1's rear side swingly installed with fixed assembly 4, limiting assembly 3 includes frame 31, frame 31 is fixedly installed in device body 1's top, frame 31's inside swingly installed with pivot 32 and guide rod 34, pivot 32 outside's left and right two sides all are provided with positive and reverse thread 33, positive and reverse thread 33 and guide rod 34's outside swingly installed with the sliding block 35 located transmission joint 2 left and right two sides symmetry and set, sliding block 35's inboard fixedly installed with clamping sleeve 36, pivot 32's outside fixedly installed with hand wheel 38.

[0023] by rotating hand wheel 38 drive pivot 32 rotation, by pivot 32 rotation drive its two sides symmetry and set positive and reverse thread 33 outside sliding block 35 transverse sliding, by sliding block 35 drive clamping sleeve 36 left and right two sides sliding inwards of transmission joint 2, make clamping sleeve 36 to wire clamp, by clamping tooth 37 to wire compression, to guarantee wire fastening limiting protection, avoid producing swing, guarantee electric property connection quality.

[0024] As Figure 4 and Figure 5 shown, fixed assembly 4 includes mounting bracket 41 and clamping block 44, the inside of mounting bracket 41 is provided with clamping groove 42, the upper and lower two sides of mounting bracket 41 are provided with limiting hole 43 that is linked with clamping groove 42, clamping block 44 is fixedly installed in device body 1's rear side, the inside of clamping block 44 is provided with through opening 45, the inside of through opening 45 is fixedly connected with guide column 46, the outside of guide column 46 swingly has the support spring 47 and sliding plate 48 of sleeve joint, the outside of sliding plate 48 is fixedly connected with the clamping column 49 of penetrating clamping block 44, and clamping column 49 swingly joint is in the inside of limiting hole 43.

[0025] By pushing the device body 1 from the side corresponding to the card slot 42 with the card block 44 on the back side, the card column 49 is extruded by the inner wall of the card slot 42, the slide plate 48 is pushed along the guide column 46 in the opening 45, the support spring 47 is extruded, the card column 49 is received in the card block 44, and the card block 44 is located in the limiting hole 43. The installation position of the device body 1 is adjusted, and the position of the device body 1 is adjusted by the elastic force of the support spring 47 pushing the slide plate 48 when the card column 49 coincides with the limiting hole 43.

[0026] As shown in Figure 3 The inner side of the clamping sleeve 36 is provided with a clamping tooth 37.

[0027] The clamping tooth 37 is provided to cooperate with the clamping sleeve 36 to clamp and limit the wire, so as to ensure the fastening effect and provide protection.

[0028] As shown in Figure 3 The guide rod 34 and the rotating shaft 32 are respectively located on the front and rear sides of the transmission connector 2.

[0029] The guide rod 34 and the rotating shaft 32 are respectively located on the front and rear sides of the transmission connector 2.

[0030] As shown in Figure 3 The clamping sleeve 36 corresponds to the position of the transmission connector 2.

[0031] The clamping sleeve 36 corresponds to the position of the transmission connector 2.

[0032] As shown in Figure 5 The slide plate 48 is symmetrically arranged on the upper and lower sides of the support spring 47.

[0033] As shown in Figure 5 The outer end of the card column 49 is spherical.

[0034] The slide plate 48 is symmetrically arranged on the upper and lower sides of the support spring 47.

[0035] The working principle of the current limiting protection device will be described below.

[0036] As shown in Figures 1 to 5As shown, the mounting frame 41 is fixedly installed by using bolts, and the device body 1 is pushed into the side corresponding to the clamping groove 42 by using the clamping block 44 at the rear side, the clamping column 49 is extruded by the inner wall of the clamping groove 42, the slide plate 48 is forced to move along the guide column 46 in the through hole 45 and extrude the supporting spring 47, the clamping column 49 is received in the clamping block 44, and the clamping block 44 is transversely slid in the limiting hole 43 to adjust the installation position of the device body 1, when the clamping column 49 coincides with the limiting hole 43, the slide plate 48 is pushed out of the limiting hole 43 by the elastic force of the supporting spring 47 to be limited, and the position of the device body 1 is adjusted, after the wire is connected with the transmission connector 2, the rotating handle 38 is rotated to drive the rotating shaft 32 to rotate, the slide block 35 outside the positive and negative thread 33 symmetrically arranged on the two sides of the rotating shaft 32 is transversely slid, the clamping sleeve 36 is slid inwardly to the left and right sides of the transmission connector 2 by the slide block 35, the clamping sleeve 36 is clamped to the wire, the wire is pressed by the clamping tooth 37, so that the wire is tightly fixed and limited, the wire is prevented from shaking, and the electrical connection quality is ensured.

[0037] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A current limiting protection device, comprising a device body (1) and a heat dissipation net (5) fixedly installed on the left and right sides of the device body (1), characterized in that: Both left and right sides of the top of the device body (1) are fixedly installed with transmission joints (2), the top of the device body (1) is fixedly installed with a limiting assembly (3) located outside the transmission joints (2), and the rear side of the device body (1) is movably installed with a fixing assembly (4); The limiting assembly (3) comprises a frame (31) fixedly installed on the top of the device body (1), a rotating shaft (32) and a guide rod (34) movably installed inside the frame (31), positive and reverse threads (33) provided on the outside of the rotating shaft (32), a sliding block (35) symmetrically provided on the left and right sides of the transmission joint (2) movably installed on the outside of the positive and reverse threads (33) and the guide rod (34), a clamping sleeve (36) fixedly installed on the inner side of the sliding block (35), and a hand wheel (38) fixedly installed on the outside of the rotating shaft (32).

2. A current limiting protection device according to claim 1, characterised in that: The fixing assembly (4) comprises a mounting bracket (41) and a clamping block (44), the inside of the mounting bracket (41) is provided with a clamping groove (42), the upper and lower sides of the mounting bracket (41) are provided with limiting holes (43) in communication with the clamping groove (42), the clamping block (44) is fixedly installed on the rear side of the device body (1), the inside of the clamping block (44) is provided with a through hole (45), the inside of the through hole (45) is fixedly connected with a guide column (46), the outside of the guide column (46) is movably sleeved with a supporting spring (47) and a sliding plate (48), the outside of the sliding plate (48) is fixedly connected with a clamping column (49) penetrating through the clamping block (44), and the clamping column (49) is movably clamped in the inside of the limiting hole (43).

3. A current limiting protection device according to claim 1, wherein: The inside of the clamping sleeve (36) is provided with clamping teeth (37).

4. A current limiting protection device according to claim 1, wherein: The guide rod (34) and the rotating shaft (32) are respectively provided on the front and rear sides of the transmission joint (2).

5. A current limiting protection device according to claim 1, wherein: The clamping sleeve (36) corresponds to the position of the transmission joint (2).

6. A current limiting protection device according to claim 2, wherein: The sliding plate (48) is symmetrically provided on the upper and lower sides of the supporting spring (47).

7. A current limiting protection device according to claim 2, wherein: The outer end of the clamping column (49) is provided in a spherical shape.

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