A protection indicator panel

Abstract

This application relates to the technical field of protective switches and discloses a protective indicator panel, which includes a panel body, a protective circuit disposed in the panel body, a cable connector disposed on the panel body, and a cable passing through the cable connector. The cable includes a live wire, a neutral wire, and a ground wire. The cable connector includes a mounting ring disposed on the panel body. An elastic element is provided on the inner wall of the mounting ring, and the elastic element abuts against the cable. When the cable outside the panel is accidentally pulled or swung, the pulling force is offset by the friction and clamping force between the elastic element and the cable, effectively preventing the pulling force from being directly transmitted to the wiring terminals inside the panel. This prevents the live wire, neutral wire, and ground wire from falling off their corresponding terminals, greatly improving the stability and reliability of the internal wire connections, reducing the equipment failure rate, and extending the service life.

Description

Technical Field

[0001] This application relates to the technical field of protective switches, and in particular to a protective indicator panel. Background Technology

[0002] A protection indicator panel is a safety protection device integrated into the appliance terminal, used to monitor the wiring status of household appliances in real time. Installed at the appliance's inlet wiring, the protection indicator panel aims to eliminate blind spots when detecting wiring faults during home entry.

[0003] In related technologies, the protection indicator panel includes a panel body, a protection circuit disposed in the panel body, and a cable connector disposed on the panel body. During wiring, first thread the cable through the cable connector into the panel body. The cable includes a live wire, a neutral wire, and a ground wire. Then, strip the insulation layer from the front ends of the live wire, neutral wire, and ground wire. Finally, electrically connect the copper wires of the live wire, neutral wire, and ground wire to the live wire terminal, neutral wire terminal, and ground wire terminal, respectively.

[0004] However, when the live wire, neutral wire, and ground wire terminals in the aforementioned protection indicator panel are connected to the live, neutral, and ground wires, the external cables are easily pulled on these wires during layout or movement, causing them to detach from their corresponding terminals. This leads to electrical connection failure of the internal wiring of the protection indicator panel, and consequently, a malfunction of the protection indicator panel. Therefore, improvements are needed. Summary of the Invention

[0005] In order to improve the stability of the internal wire connection of the protection indicator panel and extend the service life of the protection indicator panel, this application provides a protection indicator panel.

[0006] The protection indicator panel provided in this application adopts the following technical solution: A protective indicator panel includes a panel body, a protective circuit disposed in the panel body, a cable connector disposed on the panel body, and a cable passing through the cable connector. The cable includes a live wire, a neutral wire, and a ground wire. The cable connector includes a mounting ring disposed on the panel body. An elastic element is provided on the inner wall of the mounting ring, and the elastic element abuts against the cable.

[0007] By adopting the above technical solution, after the cable passes through the cable connector and connects to the terminal inside the panel body, the elastic element on the inner wall of the mounting ring abuts against the outer wall of the cable, forming a stable clamping force on the cable. When the cable outside the panel is accidentally pulled or swung, the pulling force is offset by the friction and clamping force between the elastic element and the cable, effectively preventing the pulling force from being directly transmitted to the terminal inside the panel. This prevents the live wire, neutral wire, and ground wire from falling off their corresponding terminals, greatly improving the stability and reliability of the internal wire connection, reducing the equipment failure rate, and extending its service life.

[0008] Optionally, the elastic element includes a sliding block slidably disposed on the inner wall of the mounting ring and a connecting spring disposed on the sliding block. A sliding groove is provided on the inner wall of the mounting ring, the sliding block is slidably disposed in the sliding groove, the connecting spring is disposed in the sliding groove, the connecting spring has a tendency to drive the sliding block to move closer to the cable, and a rubber pad is provided on the side of the sliding block closer to the cable.

[0009] By employing the above technical solution, utilizing the elastic potential energy of the connecting spring, the sliding block can spontaneously move towards the cable and continuously and tightly press the cable, achieving automatic clamping and fixation of the cable. The rubber pad increases the friction between the sliding block and the cable, making it less likely for the cable to slip relative to the sliding block after being inserted into the mounting ring, thus making the cable fixation effect of the sliding block more secure. Simultaneously, thanks to the spring's extension and retraction characteristics, the sliding block can automatically adjust its extension length according to cables of different specifications and diameters, improving the applicability and compatibility of the cable connector for different cables and ensuring a consistently stable clamping effect.

[0010] Optionally, a sliding ring is slidably disposed on the inner wall of the mounting ring. The sliding ring is disposed at one end of the mounting ring near the panel body, and the sliding block is disposed on the side of the sliding ring away from the panel body. A wedge-shaped ring is provided at the end of the sliding ring near the sliding block. The diameter of the wedge-shaped ring at the end near the sliding block is smaller than the diameter at the end away from the sliding block. A guide slope is provided on the sliding block. The guide slope is used to guide the sliding block to slide away from the cable.

[0011] By adopting the above technical solution, when initially inserting the cable or later needing to remove it for maintenance, the operator can push the sliding ring, causing it to move the wedge ring towards the sliding block. The conical surface of the wedge ring interacts with the guide slope on the sliding block, creating pressure that forces the sliding block to overcome the thrust of the connecting spring and retract away from the cable. This quickly releases the clamp on the cable, allowing it to be removed from the cable connector for secondary stripping and reconnection maintenance. This makes cable connection and disassembly more effortless and convenient, effectively avoiding wear and damage to the cable's outer insulation layer caused by forced pulling.

[0012] Optionally, the end of the sliding ring away from the wedge ring extends out of the mounting ring, and a limiting ring is provided at the end of the sliding ring away from the wedge ring. The limiting ring is located in the panel body and is disposed on the circumferential outer wall of the sliding ring. A return spring is provided on the side of the limiting ring near the inner wall of the panel body. The return spring has a tendency to drive the limiting ring to move away from the sliding block.

[0013] By adopting the above technical solution, when it is necessary to push the sliding ring to clamp or release the cable from the sliding block, only the limiting ring needs to be pushed or pulled. The limiting ring extends out of the mounting ring, increasing the operator's operating space and facilitating the movement of the sliding ring. After the operator passes the cable through the cable connector and releases the limiting ring, the spring force of the return spring automatically drives the limiting ring to slide and reset the sliding ring and wedge ring away from the sliding block, allowing the sliding block to clamp the cable again under the action of the connecting spring. This achieves automatic reset of the sliding ring and wedge ring, eliminating the need for manual reset of the sliding ring, improving operational efficiency and the automation level of the entire wiring operation.

[0014] Optionally, a tapered hole is also provided on the inner wall of the mounting ring. The tapered hole communicates with the wedge ring. The diameter of the tapered hole at the end near the wedge ring is smaller than the diameter at the end away from the wedge ring. The diameter of the tapered hole at the end near the wedge ring is equal to the diameter of the end of the wedge ring near the sliding block. The tapered hole is used to allow the cable to extend into the mounting ring.

[0015] By adopting the above technical solution, the tapered hole, with its funnel-shaped opening (large end facing outwards and small end facing inwards), provides excellent addressing and guiding capabilities when the cable end is inserted into the mounting ring. Operators can more easily and smoothly guide the flexible cable end accurately into the wedge ring and sliding ring, effectively reducing the difficulty of cable alignment and improving the overall efficiency of wiring assembly.

[0016] Optionally, the cable connector may further include a protective ring disposed on the circumferential outer wall of the mounting ring, wherein the outer wall of the mounting ring is provided with a fixing thread and the inner wall of the protective ring is provided with a fixing screw hole.

[0017] By adopting the above technical solution, the protective ring is fastened to the outside of the mounting ring by a threaded connection. This not only provides physical shielding and collision protection for the mounting ring and its internal sliding clamping components, preventing damage to the mounting ring from external hard objects, but also enhances the overall structural strength of the cable connector. Furthermore, the threaded connection facilitates quick disassembly and subsequent maintenance of the protective ring. When the protective ring is damaged, it can be replaced individually without replacing the entire cable connector, saving on the maintenance costs of the indicator panel.

[0018] Optionally, the mounting ring has several limiting grooves at one end away from the panel body. The limiting grooves are evenly distributed along the circumference of the mounting ring. The inner wall of the protective ring has several limiting strips. The limiting strips are inclined in the same direction as the limiting grooves and are evenly distributed along the circumferential inner wall of the protective ring.

[0019] By adopting the above technical solution, when the protective ring is tightened onto the mounting ring, the inclined limiting strip can slide into and lock into the corresponding limiting groove, forming a one-way anti-loosening resistance structure similar to a ratchet. This effectively prevents the protective ring from loosening or rotating during long-term vibration of electrical appliances or repeated swinging of cables, further enhancing the locking stability and reliability of the overall cable joint structure.

[0020] Optionally, the protective ring includes a connecting part and a sealing part. The fixing screw hole is opened on the connecting part, the sealing part is located at the end of the connecting part away from the panel body, the limiting strip is located on the sealing part, and the diameter of the end of the sealing part away from the connecting part is smaller than the diameter of the mounting ring.

[0021] By adopting the above technical solution, the smaller diameter and tapered shape of the sealing end allow it to fit more snugly around the protruding cable, minimizing the radial gap between the cable and the protective ring. This provides excellent dustproof and waterproof sealing, preventing external dust, moisture, or impurities from entering the cable joint or even the panel body through cable gaps, significantly improving the safety performance of the indicator panel and its service life in extreme environments.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting an elastic component on the inner wall of the mounting ring to automatically clamp the cable, a stable tensile clamping force is provided for the cable, effectively cutting off the transmission of external tension to the internal terminals, improving the problem of cable easy detachment and failure, and enhancing the stability of the internal wire connection of the equipment; 2. No special tools are needed; simply press the limit ring to easily achieve non-destructive insertion and removal of cables, balancing the reliability of fastening with the convenience of daily maintenance. 3. By setting an anti-loosening structure consisting of a limiting strip and a limiting groove between the outer protective ring and the mounting ring, the self-locking function of the connector assembly in a vibration environment is realized. At the same time, combined with the design of the sealing part with a reduced diameter, the gap of the cable outlet is further optimized, and the sealing and protection performance of the entire panel equipment, such as dustproof and waterproof, is improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application.

[0025] Figure 3 This is an exploded structural diagram of an embodiment of this application.

[0026] Figure 4This is a schematic diagram of the protective ring structure in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Panel body; 2. Cable connector; 21. Mounting ring; 211. Sliding groove; 212. Tapered hole; 213. Fixing thread; 214. Limiting groove; 22. Elastic element; 221. Sliding block; 222. Connecting spring; 223. Rubber pad; 224. Guide slope; 23. Protective ring; 231. Fixing screw hole; 232. Limiting strip; 233. Connecting part; 234. Sealing part; 3. Sliding ring; 31. Wedge ring; 32. Limiting ring; 321. Return spring. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a protection indicator panel.

[0030] Reference Figure 1 and Figure 2 A protection indicator panel includes a panel body 1, a protection circuit (not shown in the figure) disposed in the panel body 1, a cable connector 2 disposed on the panel body 1, and a cable (not shown in the figure) passing through the cable connector 2. The cable includes a live wire, a neutral wire, and a ground wire (all not shown in the figure). The cable connector 2 includes a mounting ring 21 disposed on the panel body 1. An elastic element 22 is provided on the inner wall of the mounting ring 21. The elastic element 22 abuts against the cable. The elastic element 22 can effectively prevent the cable from being pulled when the external cable layout or swinging of the panel is arranged, reduce the possibility of the cable detaching from the terminal, ensure the normal electrical connection of the internal wires of the protection indicator panel, and thus ensure the normal operation of the protection indicator panel.

[0031] Reference Figure 2 The elastic element 22 includes a sliding block 221 slidably disposed on the inner wall of the mounting ring 21 and a connecting spring 222 disposed on the sliding block 221. A rubber pad 223 is provided on the side of the sliding block 221 near the cable. The rubber pad 223 is arc-shaped on the side near the cable and can fit tightly against the cable. In this embodiment, four sliding blocks 221 and connecting springs 222 are preferably evenly distributed along the circumferential inner wall of the mounting ring 21. The sliding block 221 is typically a block structure, and the material can be plastic or metal, such as aluminum alloy, possessing certain strength and wear resistance. A sliding groove 211 is formed on the inner wall of the mounting ring 21, and the sliding groove 211 is annular.

[0032] Reference Figure 2The sliding block 221 is slidably disposed in the sliding groove 211, and the connecting spring 222 is disposed in the sliding groove 211. The connecting spring 222 has a tendency to drive the sliding block 221 to move closer to the cable. One end of the connecting spring 222 is fixed to the groove wall of the sliding groove 211, and the other end is connected to the sliding block 221. The connecting spring 222 generates elastic force to move the sliding block 221 closer to the cable, thereby pressing against the cable.

[0033] Reference Figure 2 A sliding ring 3 is slidably disposed on the inner wall of the mounting ring 21. The sliding ring 3 has an annular structure. The sliding ring 3 is disposed at the end of the mounting ring 21 near the panel body 1, and the sliding block 221 is disposed on the side of the sliding ring 3 away from the panel body 1. A wedge-shaped ring 31 is provided at the end of the sliding ring 3 near the sliding block 221. The wedge-shaped ring 31 has a conical ring structure, and its diameter at the end near the sliding block 221 is smaller than the diameter at the end away from the sliding block 221.

[0034] Reference Figure 2 The sliding block 221 is provided with a guide slope 224, which is used to guide the sliding block 221 to slide away from the cable. When the sliding ring 3 moves towards the sliding block 221, the slope of the wedge ring 31 contacts the guide slope 224 of the sliding block 221, which will cause the sliding block 221 to overcome the elastic force of the connecting spring 222 and slide away from the cable.

[0035] Reference Figure 1 and Figure 2 The end of the sliding ring 3 furthest from the wedge-shaped ring 31 extends out of the mounting ring 21. A limiting ring 32 is provided at the end of the sliding ring 3 furthest from the wedge-shaped ring 31. The limiting ring 32 is located within the panel body 1 and is disposed on the circumferential outer wall of the sliding ring 3. The limiting ring 32 is an annular structure, which can limit the movement range of the sliding ring 3.

[0036] Reference Figure 1 and Figure 2 A return spring 321 is provided on the side of the limiting ring 32 near the inner wall of the panel body 1. One end of the return spring 321 is connected to the limiting ring 32, and the other end is connected to the inner wall of the panel body 1. The return spring 321 has a tendency to drive the limiting ring 32 to move away from the sliding block 221. When the limiting ring 32 is subjected to an external force and moves towards the sliding block 221, the return spring 321 will be compressed. When the external force disappears, the return spring 321 will return to its original state, driving the limiting ring 32 to move the sliding ring 3 away from the sliding block 221 to reset.

[0037] Reference Figure 2The inner wall of the mounting ring 21 is also provided with a tapered hole 212, which communicates with the wedge ring 31. The diameter of the tapered hole 212 at the end near the wedge ring 31 is smaller than the diameter at the end away from the wedge ring 31, and the diameter of the tapered hole 212 at the end near the wedge ring 31 is equal to the diameter of the end of the wedge ring 31 near the sliding block 221. The tapered hole 212 is used to allow the cable to extend into the mounting ring 21. The design of the tapered hole 212 facilitates the insertion of the cable and also provides a certain guiding effect for the cable.

[0038] Reference Figure 2 and Figure 3 The cable connector 2 also includes a protective ring 23 disposed on the circumferential outer wall of the mounting ring 21. The outer wall of the mounting ring 21 is provided with a fixing thread 213, and the inner wall of the protective ring 23 is provided with a fixing screw hole 231. The protective ring 23 can be made of plastic or metal, and is threadedly connected to the mounting ring 21 through the cooperation of the fixing thread 213 and the fixing screw hole 231.

[0039] Reference Figure 2 and Figure 3 The protective ring 23 includes a connecting portion 233 and a sealing portion 234. The sealing portion 234 is located at the end of the connecting portion 233 away from the panel body 1. A fixing screw hole 231 is formed on the connecting portion 233. The diameter of the end of the sealing portion 234 away from the connecting portion 233 is smaller than the diameter of the mounting ring 21. The sealing portion 234 can play a sealing role, preventing dust, moisture, etc. from entering the interior of the mounting ring 21.

[0040] Reference Figure 3 and Figure 4 The mounting ring 21 has several limiting grooves 214 at its end away from the panel body 1, and these grooves are evenly spaced along the circumference of the mounting ring 21. Several limiting strips 232 are evenly arranged on the inner circumferential wall of the sealing part 234, and these strips are inclined in the same direction as the limiting grooves 214. The cooperation between the limiting grooves 214 and the limiting strips 232 further enhances the connection stability between the protective ring 23 and the mounting ring 21, preventing the protective ring 23 from loosening.

[0041] The implementation principle of a protection indicator panel according to an embodiment of this application is as follows: When a cable needs to be connected, simply press the limiting plate towards the sliding block 221, causing the sliding block 221 to slide away from each other. Then, thread the cable through the mounting ring 21. Once the cable passes through the wedge ring 31 and the sliding ring 3, the limiting plate can be released. At this time, the sliding block 221 slides towards each other, thereby clamping the middle part of the cable in the mounting ring 21. This ensures that when the external cable of the protection indicator panel is pulled, the force point shifts from between the cable and the terminal block to between the sliding block 221 and the cable, reducing the risk of the live wire, neutral wire, and ground wire becoming detached from their corresponding terminals. This improves the stability of the internal cable electrical connection of the protection indicator panel, thereby reducing the failure probability of the protection indicator panel and extending its service life. In subsequent use, when secondary wiring or maintenance of the cable is required, simply press the limiting plate again to release the sliding block 221 and remove the cable, improving maintenance efficiency.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective indicator panel, comprising a panel body (1), a protective circuit disposed in the panel body (1), a cable connector (2) disposed on the panel body (1), and a cable passing through the cable connector (2), wherein the cable comprises a live wire, a neutral wire, and a ground wire, characterized in that: The cable connector (2) includes a mounting ring (21) which is disposed on the panel body (1). An elastic element (22) is provided on the inner wall of the mounting ring (21), and the elastic element (22) abuts against the cable.

2. A protection indicator panel according to claim 1, characterized in that: The elastic element (22) includes a sliding block (221) slidably disposed on the inner wall of the mounting ring (21) and a connecting spring (222) disposed on the sliding block (221). A sliding groove (211) is provided on the inner wall of the mounting ring (21). The sliding block (221) is slidably disposed in the sliding groove (211). The connecting spring (222) is disposed in the sliding groove (211). The connecting spring (222) has a tendency to drive the sliding block (221) to move closer to the cable. A rubber pad (223) is provided on the side of the sliding block (221) closer to the cable.

3. A protection indicator panel according to claim 2, characterized in that: A sliding ring (3) is slidably disposed on the inner wall of the mounting ring (21). The sliding ring (3) is disposed at one end of the mounting ring (21) near the panel body (1). The sliding block (221) is disposed on the side of the sliding ring (3) away from the panel body (1). A wedge-shaped ring (31) is provided at one end of the sliding ring (3) near the sliding block (221). The diameter of the wedge-shaped ring (31) at the end near the sliding block (221) is smaller than the diameter at the end away from the sliding block (221). A guide slope (224) is provided on the sliding block (221). The guide slope (224) is used to guide the sliding block (221) to slide away from the cable.

4. A protection indicator panel according to claim 3, characterized in that: The sliding ring (3) extends from the mounting ring (21) at one end away from the wedge ring (31). A limiting ring (32) is provided at the other end of the sliding ring (3) away from the wedge ring (31). The limiting ring (32) is located in the panel body (1). The limiting ring (32) is set on the circumferential outer wall of the sliding ring (3). A return spring (321) is provided on the side of the limiting ring (32) close to the inner wall of the panel body (1). The return spring (321) has a tendency to drive the limiting ring (32) to move away from the sliding block (221).

5. A protection indicator panel according to claim 3, characterized in that: A tapered hole (212) is also provided on the inner wall of the mounting ring (21). The tapered hole (212) is connected to the wedge ring (31). The diameter of the tapered hole (212) at the end near the wedge ring (31) is smaller than the diameter at the end away from the wedge ring (31). The diameter of the tapered hole (212) at the end near the wedge ring (31) is equal to the diameter of the end of the wedge ring (31) near the sliding block (221). The tapered hole (212) is used to allow the cable to extend into the mounting ring (21).

6. A protection indicator panel according to claim 1, characterized in that: The cable connector (2) also includes a protective ring (23) disposed on the circumferential outer wall of the mounting ring (21). The outer wall of the mounting ring (21) is provided with a fixing thread (213), and the inner wall of the protective ring (23) is provided with a fixing screw hole (231).

7. A protection indicator panel according to claim 6, characterized in that: The mounting ring (21) has several limiting grooves (214) at one end away from the panel body (1). The limiting grooves (214) are evenly opened along the circumference of the mounting ring (21). The inner wall of the protective ring (23) is provided with several limiting strips (232). The limiting strips (232) are inclined in the same direction as the limiting grooves (214). The limiting strips (232) are evenly distributed along the circumferential inner wall of the protective ring (23).

8. A protection indicator panel according to claim 7, characterized in that: The protective ring (23) includes a connecting part (233) and a sealing part (234). The fixing screw hole (231) is opened on the connecting part (233). The sealing part (234) is located at the end of the connecting part (233) away from the panel body (1). The limiting strip (232) is located on the sealing part (234). The diameter of the end of the sealing part (234) away from the connecting part (233) is smaller than the diameter of the mounting ring (21).

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