Low-temperature-resistant leakage protector

By using rubber plugs and funnel-shaped electric shock plate components in low-temperature leakage protectors, the short circuit problem caused by water vapor condensation in low-temperature environments is solved, and the safety and reliability of the equipment are improved.

CN222191826UActive Publication Date: 2024-12-17WUHAN TIANZE GRAVEL ENGINEERING CO LTD
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Patent Information

Application Number
CN202421258340.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2024-12-17
Estimated Expiration
2034-06-04

AI Technical Summary

Technical Problem

The existing low-temperature leakage protectors may cause short circuits in low-temperature environments due to the difference in hot and cold temperatures, causing water vapor condensation to occur, which may cause short circuits to damage the circuit.

Method used

A low-temperature leakage protection device including a rubber plug is designed to seal the threading holes through the rubber plug to prevent water vapor from entering the cold air from outside. Combined with the funnel-like electric shock plate and tight wire assembly, ensure that the wires are connected firmly and avoid short circuits.

Benefits of technology

It effectively avoids the risk of short-circuiting of water vapor to the docking port and improves the safety of the use of leakage protectors in low temperature environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of leakage protectors, and discloses a low temperature resistant leakage protector comprising a protector body, the bottom of the protector body is provided with a threading port, the interior of the threading port is fixedly connected with a rubber plug, the bottom of the rubber plug is provided with a threading hole in a penetrating manner, the top of the threading port is provided with a wire clamping hole, and the wire clamping hole is fixedly connected with the rubber plug. A wire clamping hole is formed in the front face of the protector body, a wire clamping assembly is connected into the wire clamping hole, a wire tightening hole is formed in the position, close to the bottom, of the front face of the protector body, a wire tightening assembly is connected into the wire tightening hole, the wire tightening hole communicates with the wire clamping hole, and the wire tightening assembly is connected with the wire clamping assembly. According to the low-temperature-resistant leakage protector, through the design of the rubber plug, the threading hole can be plugged, a wire is inserted into the wire clamping hole through the threading opening of the rubber plug to be connected, and when external cold air is in heat contact with the protector, generated water vapor can be blocked on the outer side of the rubber plug, so that the leakage of the protector is prevented; therefore, the short circuit risk of the connecting lead of the protector caused by water vapor and the like is avoided, and the use safety of the leakage protector in a low-temperature environment is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of leakage protectors, in particular to a low-temperature resistant leakage protector. Background Art

[0002] A low-temperature resistant leakage protector is an electrical safety device specially designed to work normally in a low-temperature environment; this type of leakage protector can ensure that under extremely cold conditions, it can still effectively detect leakage in the circuit and cut off the power supply in time to prevent fire, equipment damage or personal electric shock accidents caused by leakage.

[0003] For example, the patent with announcement number CN218730713U announces a low-temperature resistant leakage protector, including a protector body and an operating handle arranged at the front end of the protector body, the lower end of the protector body is provided with multiple connection ports, the bottom ends of the multiple connection ports are provided with protective covers on the outside, the inner sides of the multiple protective covers are slidably connected with movable covers, the outer end of the transmission rod is fixedly connected with a round block, the upper end of the round block is fixedly connected with a positioning slide bar that is slidably plugged into one side of the protector body, and the positioning slide bar is fixed to one side of the protector body by a positioning bolt. By slidingly connecting the movable covers on the inner sides of multiple protective covers, the protective covers can be flexibly adjusted, because the movable covers are made of insulating and heat-insulating materials, they can play a role in protecting and heat-insulating the connection ends, have a good cold-resistant effect, and the safety performance is further improved.

[0004] However, the leakage protector in the above technology still has the following problems:

[0005] Since the working environment temperature of the leakage protector is relatively low, the leakage protector itself will generate a certain amount of heat during its continuous operation. After these heat comes into contact with the low-temperature air outside the leakage protector, they will form certain condensation droplets on the outside of the leakage protector due to the change in temperature difference. If these condensation droplets are on the wiring port of the leakage protector, they may cause a short circuit in the connection between the wiring port and the wire, resulting in damage to the line. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a low-temperature resistant leakage protector, for example, it can prevent water drops on the outside of the leakage protector from causing short-circuit damage to the connection of the wires connected in the wiring port.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature resistant leakage protector, comprising a protector body, a wire threading port is provided at the bottom of the protector body, a rubber plug is fixedly connected to the wire threading port, a wire threading hole is provided through the bottom of the rubber plug, a wire clamping hole is provided at the top of the wire threading port, a wire clamping assembly is connected to the wire clamping hole, a tightening wire hole is provided on the front side of the protector body near the bottom, a tightening wire assembly is connected to the tightening wire hole, the tightening wire hole is communicated with the clamping wire hole, and the tightening wire assembly is connected to the clamping wire assembly.

[0008] Furthermore, the wire clamping assembly includes an electric shock sheet and a wire clamping block, the electric shock sheet and the wire clamping block are both located in the wire clamping hole, and the wire clamping block is connected to the wire tightening assembly.

[0009] Furthermore, the electric shock sheet is funnel-shaped, and the bottom opening of the funnel-shaped electric shock sheet is connected to the wire threading hole. The electric shock sheet is fixedly connected to the wire clamping hole and is electrically connected to the internal circuit of the protector body. The wire clamping block is located above the electric shock sheet and is matched with the electric shock sheet. The side of the wire clamping block away from the electric shock sheet is connected to the wire tensioning assembly.

[0010] Furthermore, the wire tensioning assembly includes a lifting rod and a wire tensioning rod, a lifting hole is opened on the side of the wire clamping hole away from the threading port, the lifting rod is slidably connected to the lifting hole, one end of the lifting rod away from the lifting hole is fixedly connected to the wire clamping block, a transmission hole is opened on one side of the lifting hole, the other side of the transmission hole is connected to the wire tensioning hole, a transmission part is arranged in the transmission hole, and the transmission part is connected to the lifting rod and the wire tensioning rod at the same time.

[0011] Furthermore, the transmission member is a gear structure, the transmission member is located in the transmission hole, the tension rod passes through the tension hole and is fixedly connected to the transmission member, and a plurality of tooth grooves are formed on the side wall of the lifting rod, and the transmission member meshes with the tooth grooves.

[0012] Furthermore, a screwing groove is formed at one end of the tightening rod facing outwards.

[0013] Furthermore, one end of the lifting rod away from the wire clamping block is fixedly connected to a compression spring, and the other end of the compression spring is fixedly connected to the lifting hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] This low-temperature resistant leakage protector can seal the wire threading hole through the design of the rubber plug. The wire is inserted into the wire clamping hole through the wire threading hole of the rubber plug for connection. When the heat between the external cold air and the protector body comes into contact, the generated water vapor will be blocked on the outside of the rubber plug, thereby avoiding the risk of short circuit of the connecting wires of the protector caused by water vapor, thereby improving the safety of use of the low-temperature resistant leakage protector in low-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the overall appearance connection structure of the utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the connection structure of the bottom part of the utility model;

[0018] Figure 3 Based on Figure 2 A cross-sectional schematic diagram of the position of the tightening hole;

[0019] Figure 4 Based on Figure 3 Exploded schematic diagram of part of the connection structure;

[0020] Figure 5 Based on Figure 4 Exploded schematic diagram of part of the connection structure;

[0021] Figure 6 Based on Figure 4 Schematic diagram of the connection structure of the tensioning component from another angle.

[0022] In the figure: 1. Protector body; 2. Rubber plug; 3. Electric shock sheet; 4. Wire clamp block; 5. Lifting rod; 6. Wire tightening rod; 7. Transmission part; 8. Extrusion spring; 101. Threading port; 102. Wire clamping hole; 103. Lifting hole; 104. Transmission hole; 105. Wire tightening hole; 201. Threading hole; 501. Tooth groove; 601. Twist groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1 - Figure 6 A low-temperature resistant leakage protector comprises a protector body 1, a wire threading port 101 is provided at the bottom of the protector body 1, a rubber plug 2 is fixedly connected to the wire threading port 101, a wire threading hole 201 is penetrated through the bottom of the rubber plug 2, a wire clamping hole 102 is provided at the top of the wire threading port 101, a wire clamping assembly is connected to the wire clamping hole 102, a tightening wire hole 105 is provided on the front side of the protector body 1 near the bottom, a tightening wire assembly is connected to the tightening wire hole 105, the tightening wire hole 105 is communicated with the clamping wire hole 102, and the tightening wire assembly is connected to the clamping wire assembly.

[0025] like Figure 1 - Figure 6As shown, a low temperature resistant leakage protector in the utility model is similar to the existing low temperature resistant leakage protector structure, such as a low temperature resistant leakage protector disclosed in the patent with announcement number CN218730713U. The main improvement of the utility model is that it can reduce the possibility of water vapor generated by the contact between cold and hot air causing short circuits to the internal connections of the protector, thereby improving the safety of the protector. Figures 1 to 6 As shown, when the low-temperature resistant leakage protector of the utility model is in use, the wire threading hole 101 at the bottom of the protector body 1 is blocked by the rubber plug 2. When wiring, the outer wall of one end of the wire is peeled off, and then the peeled wire end is inserted into the wire threading hole 201 of the rubber plug 2 and continued to be inserted inwardly. The wire threading hole 201 of the rubber plug 2 is smaller than the diameter of the wire. Since the rubber plug 2 is made of rubber and has a certain elasticity, the peeled wire can be inserted inwardly, making the connection between the wire and the rubber plug 2 more secure. Tight. When the protector body 1 is working, the heat generated comes into contact with the low-temperature air outside, and part of the water vapor condenses on the outside of the rubber plug 2, reducing the possibility of water vapor entering the interior from the threading port 101 and the threading hole 201, thereby avoiding the possibility of water vapor causing a short circuit to the wire, and improving the safety of the leakage protector in a low-temperature environment. After the stripped wire is inserted into the threading hole 201, it enters the wire clamping hole 102, and the inserted wire can be tightened by the wire tightening component, thereby completing the wire connection installation of the low-temperature resistant protector body 1.

[0026] like Figure 2 - Figure 6 As shown, the clamping assembly includes a contact plate 3 and a clamping block 4. The contact plate 3 and the clamping block 4 are both located in the clamping hole 102. The clamping block 4 is connected to the tightening assembly. The tightening assembly drives the clamping block 4 to approach the contact plate 3, thereby clamping and fixing the wires between the contact plate 3 and the clamping block 4.

[0027] like Figure 2 - Figure 6 As shown, the electric shock sheet 3 is designed in a funnel shape, and the bottom opening of the funnel-shaped electric shock sheet 3 is connected to the threading hole 201. The electric shock sheet 3 is fixedly connected to the clamping hole 102 and electrically connected to the internal circuit of the protector body 1. The clamping block 4 is located above the electric shock sheet 3 and is matched with the electric shock sheet 3. The side of the clamping block 4 away from the electric shock sheet 3 is connected to the tightening assembly. When the wire is inserted inward through the threading hole 201 and enters the clamping hole 102, and enters the inside of the electric shock sheet 3 from the bottom opening of the funnel-shaped electric shock sheet 3, the wire may be on any side of the electric shock sheet 3 at this time, and then the matching clamping block 4 is driven downward by the tightening assembly, so that the wire is clamped between the electric shock sheet 3 and the clamping block 4, and the wire is clamped and fixed.

[0028] like Figure 2 - Figure 6As shown, the tensioning assembly includes a lifting rod 5 and a tensioning rod 6, a lifting hole 103 is opened on the side of the wire clamping hole 102 away from the threading port 101, the lifting rod 5 is slidably connected to the lifting hole 103, one end of the lifting rod 5 away from the lifting hole 103 is fixedly connected to the wire clamping block 4, a transmission hole 104 is opened on one side of the lifting hole 103, the other side of the transmission hole 104 is connected to the tensioning hole 105, a transmission member 7 is arranged in the transmission hole 104, and the transmission member 7 is connected to the lifting rod 5 and the tensioning rod 6 at the same time. By screwing the tightening rod 6, the lifting rod 5 is driven to move upward through the transmission part 7, thereby driving the wire clamping block 4 at the bottom of the lifting rod 5 to move upward, so that a certain space is formed in the contact plate 3, which facilitates the smooth insertion of the wire into the contact plate 3. Then, the lifting rod 5 is driven to slide down in the lifting hole 103 again through the tightening rod 6, so that the wire clamping block 4 moves down and clamps the wire in the contact plate 3 to fix it in the contact plate 3, completing the clamping and fixing installation of the wire.

[0029] like Figure 3 - Figure 6 As shown, the transmission member 7 is a gear structure, the transmission member 7 is located in the transmission hole 104, the tension rod 6 passes through the tension hole 105 and is fixedly connected to the transmission member 7, and the side wall of the lifting rod 5 is provided with a plurality of tooth grooves 501, and the transmission member 7 is meshed with the tooth grooves 501. When the tension rod 6 is rotated, the gear-shaped transmission member 7 is driven to rotate, and then the lifting rod 5 is driven to move up and down in the lifting hole 103 through meshing.

[0030] like Figure 1 - Figure 6 As shown, a screw groove 601 is provided at one end of the tightening rod 6 facing outward. The screw groove 601 is provided at the end of the tightening rod 6 to facilitate screwing the tightening rod 6 to clamp the wire.

[0031] like Figure 1 - Figure 6 As shown, the end of the lifting rod 5 away from the clamping block 4 is fixedly connected to a squeezing spring 8, and the other end of the squeezing spring 8 is fixedly connected to the lifting hole 103. When the clamping block 4 moves down to clamp the wire, the clamping block 4 can be squeezed downward more firmly by the squeezing spring 8, and then the end of the wire is squeezed and fixed in the shock sheet 3 in cooperation with the shock sheet 3, completing the wiring operation of the leakage protector.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A low temperature resistant leakage protector, comprising a protector body (1), Features: The protector body (1) has a threading opening (101) at the bottom, a rubber plug (2) is fixedly connected to the threading opening (101), a threading hole (201) is formed through the bottom of the rubber plug (2), a clamping hole (102) is formed at the top of the threading opening (101), a clamping assembly is connected to the clamping hole (102), a tightening hole (105) is formed at the front of the protector body (1) near the bottom, a tightening assembly is connected to the tightening hole (105), the tightening hole (105) is communicated with the clamping hole (102), and the tightening assembly is connected to the clamping assembly.

2. A low temperature resistant leakage protector according to claim 1, Features: The wire clamping assembly comprises an electric shock sheet (3) and a wire clamping block (4); the electric shock sheet (3) and the wire clamping block (4) are both located in the wire clamping hole (102); and the wire clamping block (4) is connected to the wire tightening assembly.

3. A low temperature resistant leakage protector according to claim 2, Features: The electric shock sheet (3) is designed to be funnel-shaped, and the bottom opening of the funnel-shaped electric shock sheet (3) is connected to the threading hole (201). The electric shock sheet (3) is fixedly connected to the wire clamping hole (102) and is electrically connected to the internal circuit of the protector body (1). The wire clamping block (4) is located above the electric shock sheet (3) and is arranged to match the electric shock sheet (3). The side of the wire clamping block (4) away from the electric shock sheet (3) is connected to the wire tightening assembly.

4. A low temperature resistant leakage protector according to claim 3, Features: The wire tightening assembly comprises a lifting rod (5) and a wire tightening rod (6); a lifting hole (103) is provided on a side of the wire clamping hole (102) away from the threading port (101); the lifting rod (5) is slidably connected to the lifting hole (103); one end of the lifting rod (5) away from the lifting hole (103) is fixedly connected to the wire clamping block (4); a transmission hole (104) is provided on one side of the lifting hole (103); the other side of the transmission hole (104) is communicated with the wire tightening hole (105); a transmission member (7) is provided in the transmission hole (104); and the transmission member (7) is simultaneously connected to the lifting rod (5) and the wire tightening rod (6).

5. A low temperature resistant leakage protector according to claim 4, Features: The transmission member (7) is a gear structure. The transmission member (7) is located in the transmission hole (104). The tensioning rod (6) passes through the tensioning hole (105) and is fixedly connected to the transmission member (7). The side wall of the lifting rod (5) is provided with a plurality of tooth grooves (501), and the transmission member (7) meshes with the tooth grooves (501).

6. A low temperature resistant leakage protector according to claim 4 or 5, Features: A screwing groove (601) is formed at one end of the tightening rod (6) facing outwards.

7. A low temperature resistant leakage protector according to claim 4 or 5, Features: One end of the lifting rod (5) away from the wire clamping block (4) is fixedly connected to a compression spring (8), and the other end of the compression spring (8) is fixedly connected to the lifting hole (103).