All-phase voltage protection device

Abstract

The utility model relates to the technical field of circuit protection elements, in particular to an all-phase voltage protection device. The all-phase voltage protection device provided by the utility model solves the technical problem that a moving contact and a static contact of a voltage protection device in the prior art are easily damaged by electric arcs. An all-phase voltage protection device comprises an arc extinguishing device, the arc extinguishing device is provided with a containing groove, and a contact assembly is arranged in the containing groove; by arranging the arc extinguishing plate, the arc extinguishing plate is used for being matched with the arc extinguisher to extinguish the arc when the moving contact is separated from the static contact, so that the arc can be extinguished quickly, and the moving contact and the static contact are not easy to damage. Namely, in the process of separating the moving contact from the static contact, the arc extinguishing plate can quickly enter the area between the moving contact and the static contact, so that the moving contact and the static contact are physically isolated by using the arc extinguishing plate, the arc is extinguished, and the moving contact and the static contact are not easy to damage.

Description

Technical Field

[0001] This utility model relates to the field of circuit protection element technology, and in particular to a full-phase voltage protection device. Background Technology

[0002] Overvoltage protection devices are widely used in various implementation variations to protect circuits, systems, machines, and equipment. Depending on the application and protection level, overvoltage protection devices employ different structural elements and construction methods to limit overvoltages. Spark gaps, gas-filled overvoltage dischargers, and varistors, as well as combinations of these elements, are particularly commonly used as overvoltage limiting components.

[0003] Voltage protection devices typically include moving contacts and stationary contacts, which connect or disconnect the circuit by making or separating them. The moving contact is driven by a drive assembly, which is usually controlled by a related protection circuit. However, in the prior art, the moving and stationary contacts are prone to arcing during the breaking process, and existing voltage protection devices cannot effectively extinguish the arc, causing damage to both the moving and stationary contacts.

[0004] Therefore, existing voltage protection devices suffer from the technical problem that the moving and stationary contacts are easily damaged by electric arcs. Utility Model Content

[0005] The present invention provides a full-phase voltage protection device that solves the technical problem that the moving and stationary contacts of the voltage protection device in the prior art are easily damaged by electric arc.

[0006] Some implementation schemes for solving the above-mentioned technical problems include:

[0007] A full-phase voltage protection device includes an arc extinguisher, the arc extinguisher being provided with a receiving groove, and a contact assembly being provided in the receiving groove;

[0008] The contact assembly includes a stationary contact fixed to the arc extinguisher and a moving contact rotatably disposed in the arc extinguisher and corresponding to the stationary contact;

[0009] The contact assembly also includes a drive shaft that drives the moving contact to separate from the stationary contact;

[0010] An arc-extinguishing plate is also provided in the receiving groove. The arc-extinguishing plate is slidably connected in the receiving groove. The moving contact drives the arc-extinguishing plate. When the moving contact and the stationary contact are separated, the arc-extinguishing plate is located between the moving contact and the stationary contact. When the moving contact and the stationary contact are in contact, the arc-extinguishing plate is offset from the moving contact and the stationary contact.

[0011] Preferably, the receiving groove is provided with a slide rail, and the arc extinguishing plate is slidably connected to the slide rail.

[0012] Preferably, the arc-extinguishing plate is arc-shaped.

[0013] Preferably, the arc-extinguishing plate is provided with a toothed groove, and the moving contact is provided with a gear that meshes with the toothed groove.

[0014] Preferably, the receiving groove is provided with an inner guide plate and an outer guide plate, and the slide is formed between the inner guide plate and the outer guide plate.

[0015] Preferably, the inner guide plate and the arc extinguisher are integrated into one structure, and the outer guide plate and the arc extinguisher are integrated into one structure.

[0016] Preferably, the contact assembly has three sets, and each set of the contact assembly corresponds to an independent power supply line.

[0017] Preferably, the stationary contact is provided with a wiring assembly, the wiring assembly includes a terminal block, the terminal block is provided with a wiring hole, and the terminal block is also provided with a wire clamping screw for clamping the wire in the wiring hole. The terminal block and the stationary contact are an integral structure.

[0018] Preferably, the terminal block is further provided with a positioner for positioning the wire clamping screw. The positioner is perpendicular to the wire clamping screw, and the wire clamping screw has a hole that mates with the positioner.

[0019] Preferably, the positioner is a screw, and the terminal block is provided with a screw hole that mates with the screw.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. By incorporating an arc-extinguishing plate, which works in conjunction with the arc-extinguisher to extinguish the arc when the moving and stationary contacts separate, the arc can be extinguished quickly, preventing damage to the moving and stationary contacts. Specifically, during the separation process, the arc-extinguishing plate can quickly enter the area between the moving and stationary contacts, physically isolating them and extinguishing the arc, thus minimizing damage to both.

[0022] 2. By using a moving contact to drive the arc-extinguishing plate, the arc-extinguishing plate and the moving contact have good synchronization performance, which can prevent interference between the arc-extinguishing plate and the moving and stationary contacts, thus making the full-phase voltage protection device more stable. Attached Figure Description

[0023] For illustrative purposes, several embodiments of the present invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the present invention.

[0024] Figure 1 This is a schematic diagram of the present invention.

[0025] Figure 2 This is the main view of the contact component.

[0026] Figure 3 This is a schematic diagram of the first angle of the contact assembly.

[0027] Figure 4 This is a schematic diagram of the second angle of the contact assembly.

[0028] Figure 5 This is a schematic diagram showing the separation of the moving contact and the stationary contact.

[0029] Figure 6 This is a schematic diagram of the terminal block.

[0030] In the picture:

[0031] 1. Arc extinguisher; 11. Receiving tank.

[0032] 2. Contact assembly.

[0033] 21. Stationary contact; 211. Terminal block; 212. Wiring hole; 213. Wire clamping screw; 214. Positioner.

[0034] 22. Moving contact; 221. Drive shaft; 222. Gear; 23. Arc extinguishing plate; 231. Slide rail; 232. Tooth groove; 233. Inner guide plate; 234. Outer guide plate. Detailed Implementation

[0035] The specific embodiments shown below are intended to describe various configurations of the subject matter of this invention and are not intended to represent the only configuration in which the subject matter of this invention can be practiced. The specific embodiments include detailed descriptions intended to provide a thorough understanding of the subject matter of this invention. However, it will be clear and apparent to those skilled in the art that the subject matter of this invention is not limited to the specific details shown herein and can be practiced without these specific details.

[0036] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.

[0037] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Reference Figures 1 to 6 As shown, a full-phase voltage protection device includes an arc extinguisher 1, the arc extinguisher 1 is provided with a receiving groove 11, and a contact assembly 2 is provided in the receiving groove 11;

[0039] The contact assembly 2 includes a stationary contact 21 fixed to the arc extinguisher 1 and a moving contact 22 rotatably disposed on the arc extinguisher 1 and corresponding to the stationary contact 21;

[0040] The contact assembly 2 also includes a drive shaft 221 for driving the moving contact 22 to separate from the stationary contact 21;

[0041] An arc-extinguishing plate 23 is also provided in the receiving groove 11. The arc-extinguishing plate 23 is slidably connected in the receiving groove 11. The moving contact 22 drives the arc-extinguishing plate 23. When the moving contact 22 and the stationary contact 21 are separated, the arc-extinguishing plate 23 is located between the moving contact 22 and the stationary contact 21. When the moving contact 22 and the stationary contact 21 are in contact, the arc-extinguishing plate is offset from the moving contact 22 and the stationary contact 21.

[0042] The drive shaft 221 is driven to rotate by related equipment. Specifically, the contact assembly 2 is used to disconnect the circuit, and the voltage protection circuit is used to detect the operating parameters of the circuit. When the voltage protection circuit detects abnormal operating parameters of the circuit, it controls the contact assembly 2 to separate through the corresponding drive element, which can quickly disconnect the circuit and thus play a protective function.

[0043] The specific structure and working principle of the protection circuit, as well as the specific structure and working principle of the driving element, refer to the common circuit structure and driving element in the existing technology. This solution only improves the ground contact assembly 2 part to extinguish the arc in time and prevent contact damage.

[0044] Reference Figures 1 to 6 As shown, in some embodiments, both the arc-extinguishing plate 23 and the arc-extinguishing device 1 are made of ceramic material. The drive shaft 221 can also be made of ceramic material.

[0045] The arc-extinguishing plate 23, the arc extinguisher 1, and the drive shaft 221 should have good insulation performance.

[0046] In some embodiments, a slide rail 231 is provided in the receiving groove 11, and the arc-extinguishing plate 23 is slidably connected in the slide rail 231. The slide rail 231 is used to guide the arc-extinguishing plate 23, so that the arc-extinguishing plate 23 has high displacement accuracy.

[0047] In some embodiments, the arc-extinguishing plate 23 is arc-shaped.

[0048] The arc-extinguishing plate 23 is provided with a toothed groove 232, and the moving contact 22 is provided with a gear 222 that meshes with the toothed groove 232.

[0049] The moving contact 22 can also drive the arc-extinguishing plate 23 to move through other transmission components. For example, the arc-extinguishing plate 23 can also move linearly. In this case, the moving contact 22 can use a crank-slider mechanism to drive the arc-extinguishing plate 23 to move linearly.

[0050] In some embodiments, the receiving groove 11 is provided with an inner guide plate 233 and an outer guide plate 234, and the slide 231 is formed between the inner guide plate 233 and the outer guide plate 234.

[0051] The inner guide plate 233 and the arc extinguisher 1 are an integral structure, and the outer guide plate 234 and the arc extinguisher 1 are an integral structure.

[0052] The inner guide plate 233 and the outer guide plate 234 can also be glued to the arc extinguisher 1.

[0053] Reference Figures 1 to 6 As shown, in some embodiments, the contact assembly 2 has three groups, and each group of the contact assembly 2 corresponds to an independent power supply line.

[0054] In some embodiments, the stationary contact 21 is provided with a wiring assembly, the wiring assembly including a terminal block 211, the terminal block 211 being provided with a wiring hole 212, the terminal block 211 also being provided with a wire clamping screw 213 for clamping the wire in the wiring hole 212, and the terminal block 211 and the stationary contact 21 are an integral structure.

[0055] The terminal block 211 is also provided with a positioner 214 for positioning the wire pressing screw 213. The positioner 214 is arranged perpendicularly to the wire pressing screw 213, and the wire pressing screw 213 is provided with a hole that cooperates with the positioner 214.

[0056] The positioner 214 is a screw, and the terminal block 211 is provided with a screw hole that mates with the screw.

[0057] First, insert the wire into the terminal hole 212. Then, rotate the wire clamping screw 213 to secure the wire in the terminal hole 212. Once the hole on the wire clamping screw 213 aligns with the screw hole on the terminal block 211, install the screw onto the terminal block 211. The screw prevents the wire clamping screw 213 from rotating automatically, thus preventing it from loosening.

[0058] In addition, when the hole body is aligned with the screw hole, the position of the wire clamping screw 213 relative to the terminal block 211 is determined, thereby preventing the wire clamping screw 213 from clamping the wire too tightly or too loosely, and ensuring that the wire clamping screw 213 has the correct contact pressure with the wire.

[0059] The above describes the subject matter technical solution of this utility model and its corresponding details. It is understood that the above description is only some implementation schemes of the subject matter technical solution of this utility model, and some details may be omitted in the specific implementation.

[0060] Furthermore, in some embodiments of the above utility model, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine the above embodiments according to their needs to achieve a better application experience.

[0061] When implementing the subject matter technical solution of this utility model, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter technical solution and the accompanying drawings. Obviously, these details are still within the scope of the subject matter technical solution of this utility model without departing from it.

Claims

1. A full-phase voltage protection device, characterized in that: Includes an arc extinguisher (1), the arc extinguisher (1) is provided with a receiving groove (11), and a contact assembly (2) is provided in the receiving groove (11); The contact assembly (2) includes a stationary contact (21) fixed to the arc extinguisher (1) and a moving contact (22) rotatably disposed on the arc extinguisher (1) and corresponding to the stationary contact (21); The contact assembly (2) further includes a drive shaft (221) for driving the moving contact (22) to separate from the stationary contact (21); An arc-extinguishing plate (23) is also provided in the receiving groove (11). The arc-extinguishing plate (23) is slidably connected in the receiving groove (11). The moving contact (22) drives the arc-extinguishing plate (23). When the moving contact (22) and the stationary contact (21) are separated, the arc-extinguishing plate (23) is located between the moving contact (22) and the stationary contact (21). When the moving contact (22) and the stationary contact (21) are in contact, the arc-extinguishing plate is offset from the moving contact (22) and the stationary contact (21).

2. The all-phase voltage protection device according to claim 1, characterized in that: The receiving groove (11) is provided with a slide (231), and the arc extinguishing plate (23) is slidably connected in the slide (231).

3. The all-phase voltage protection device according to claim 2, characterized in that: The arc-extinguishing plate (23) is arc-shaped.

4. The all-phase voltage protection device according to claim 3, characterized in that: The arc-extinguishing plate (23) is provided with a toothed groove (232), and the moving contact (22) is provided with a gear (222) that meshes with the toothed groove (232).

5. The all-phase voltage protection device according to claim 4, characterized in that: The receiving groove (11) is provided with an inner guide plate (233) and an outer guide plate (234), and the slide (231) is formed between the inner guide plate (233) and the outer guide plate (234).

6. The all-phase voltage protection device according to claim 5, characterized in that: The inner guide plate (233) and the arc extinguisher (1) are an integral structure, and the outer guide plate (234) and the arc extinguisher (1) are an integral structure.

7. The all-phase voltage protection device according to claim 1, characterized in that: The contact assembly (2) has three groups, and each group of the contact assembly (2) corresponds to an independent power supply line.

8. The all-phase voltage protection device according to claim 1, characterized in that: The stationary contact (21) is provided with a wiring assembly, which includes a terminal block (211), a wiring hole (212) provided in the terminal block (211), and a wire clamping screw (213) for clamping the wire in the wiring hole (212). The terminal block (211) and the stationary contact (21) are an integral structure.

9. The all-phase voltage protection device according to claim 8, characterized in that: The terminal block (211) is also provided with a locator (214) for positioning the wire pressing screw (213). The locator (214) is arranged perpendicularly to the wire pressing screw (213), and the wire pressing screw (213) is provided with a hole that cooperates with the locator (214).

10. The all-phase voltage protection device according to claim 9, characterized in that: The positioner (214) is a screw, and the terminal block (211) is provided with a screw hole that mates with the screw.

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