Anti-misplug mechanism of surge protection device

Abstract

The utility model discloses an anti-misplug mechanism of a surge protection device, which relates to the technical field of surge protection devices and comprises a base, a surge protection module, an anti-misplug rod sleeve and an anti-misplug connecting rod. The anti-misplug mechanism of the surge protection device adopts a structure formed by connecting three special-shaped arcs with different sizes, and the section parts are designed into round heads and are in arc transition; and in addition, the special shape must be assembled with three circles in the same direction, so that misplug in the assembly process is avoided, insertion is avoided even if large external force is applied to assembly, and misplug can be effectively prevented. Through the cooperation of the three special-shaped arc connectors with different sizes of the anti-misplug connecting rod and the rod sleeve, different electrical performance parameters are calibrated according to different diameters of the arcs, and the situation that modules with different electrical parameters are used in different application loops by misplug and misplug can be prevented, so that the safe use of a power system can be further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of surge protection devices, in particular to an anti-misinsertion mechanism of a surge protector. Background Art

[0002] Surge protector is a commonly used overvoltage protection device. Under normal circumstances, it is in a high impedance state. Once a surge occurs in the line due to lightning or other reasons, it will be turned on in a very short time, and the lightning current or overvoltage will be introduced into the earth through the grounding wire to protect the equipment on the line. The selection of surge protector is closely related to the working voltage of the circuit and the lightning energy it can withstand. Different application sites require surge protectors with different parameters to match them. To ensure that the surge protector is in a qualified state, relevant national documents stipulate that the performance of the surge protector needs to be checked regularly.

[0003] After searching, a surge protector with publication number CN202122674983.5 includes a base and a lightning protection module plugged into the base, the length of the base is consistent with the length of the leakage circuit breaker installed side by side, the lightning protection module includes a 2P lightning protection module and a 1+NPE lightning protection module, the 2P lightning protection module and its corresponding base are plugged and fixed by a first anti-misplugging structure; the 1+NPE lightning protection module and its corresponding base are plugged and fixed by a second anti-misplugging structure, the width of the base is the same as the width of the lightning protection module, and the first anti-misplugging structure is arranged on the 2P lightning protection module. The plug-in side or plug-in end formed between the block and the base, the 2P lightning protection module is plugged into the corresponding base to form a 2P type surge protector. Most surge protectors on the market are detachable structures of the module and the base. Due to the carelessness of on-site installation or inspection personnel, modules with different performance indicators are often plugged in incorrectly, causing safety accidents and affecting the lightning strike or overvoltage protection effect. The 2P type surge protector and 1+NPE type surge protector provided by the utility model, the 2P lightning protection module and the 1+NPE lightning protection module are respectively provided with anti-misplugging structures on the corresponding plug-in bases, and the 2P lightning protection module and its corresponding The base is plugged and fixed by the first anti-misplugging structure; the 1+NPE lightning protection module and its corresponding base are plugged and fixed by the second anti-misplugging structure. Since the first anti-misplugging structure is different from the second anti-misplugging structure, the 1+NPE lightning protection module in the 1+NPE type surge protector cannot be plugged into the base of the 2P type surge protector, thereby realizing the anti-misplugging protection of the N-PE module and avoiding the problem of misplugging the 2P lightning protection module and the 1+NPE lightning protection module due to confusion of the base. The utility model reduces the width of the existing surge protector from two conventional 36mm modules to one 18mm module. The wiring ports at the L and N line terminals of the 18mm wide base adopt a variable mode, which can realize parallel connection and staggered connection of universal busbars. It can also complete four protection modes of 2P, 1+NPE, 4P, and 3+NPE by different cooperation with the module to adapt to different power supply standards and protection requirements; only a 36mm wide base is needed to complete the 4P and 3+NPE protection modes, and the width is half of the width of the existing surge protector, which greatly reduces the occupied area of ​​the surge protector. To solve similar problems, there is currently an anti-misinsertion device with a "water drop" shape between the module and the base on the market (see Figure 3 ), although it can partially solve the problem of mis-insertion, the assembler may damage the "water drop sharp angle" edge of the anti-mis-insertion connecting rod under the module with a little force, which may still cause mis-insertion or wrong insertion. Utility Model Content

[0004] The utility model is to solve the problem that the existing module and base on the market use a "water drop" type anti-misinsertion device (see Figure 3), although it can partially solve the problem of mis-insertion, the assembler will damage the "water drop sharp angle" edge of the anti-mis-insertion connecting rod under the module with a little force, which will still cause mis-insertion or wrong insertion problems. Therefore, a surge protector anti-mis-insertion mechanism is provided.

[0005] The technical solution adopted by the utility model is as follows: the anti-misinsertion mechanism of the surge protector comprises a surge protection module, a base, an anti-misinsertion connecting rod, an anti-misinsertion rod sleeve and screws, wherein the anti-misinsertion connecting rod is installed under the surge protection module.

[0006] Furthermore, the bottom of the anti-misinsertion connecting rod under the surge protection module is connected by three arcs of different sizes, and the middle hollow contour of the anti-misinsertion rod sleeve on the base adopts the corresponding shape of the anti-misinsertion connecting rod.

[0007] Furthermore, the anti-misinsertion connecting rod is connected by three arcs of different sizes, the diameters of the three arcs of different sizes are between 2mm and 6mm, and the difference in diameters of the different arcs is above 0.5mm; by changing the shape of the anti-misinsertion connecting rod or rod sleeve of the surge protection module, that is: a structure in which three arcs of different sizes are connected, the cross-section parts all have a round head design and an arc transition, which increases the strength of the parts, and the three circles of the special-shaped parts must be in the same direction to be assembled with each other, thereby avoiding misinsertion during the assembly process.

[0008] Furthermore, the anti-mis-insertion connecting rod and the anti-mis-insertion rod sleeve are both plastic parts, preferably nylon.

[0009] Furthermore, the surge protection module and the base can only be assembled when the shape of the anti-misinsertion connecting rod is completely consistent with the inner contour of the anti-misinsertion rod sleeve; even if there is a large external force for assembly, it will not be inserted, which can effectively prevent misinsertion. By matching the three different-sized arc connections of the anti-misinsertion connecting rod and the rod sleeve, different electrical performance parameters are calibrated according to different arc diameters, which can prevent modules with different electrical parameters from being misinserted or used in different application circuits, thereby further ensuring the safe use of the power system.

[0010] Furthermore, the anti-misinsertion rod sleeve is embedded in the middle of the base.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model changes the shape of the anti-misinsertion connecting rod or rod sleeve of the surge protection module, that is, the structure of three special-shaped arcs of different sizes connected, the cross-section parts are all designed with round heads and arc transitions, which increases the strength of the parts, and the three special-shaped circles must be in the same direction to be assembled with each other, avoiding misinsertion during the assembly process. Even if there is a large external force for assembly, it will not be inserted, which can effectively prevent misinsertion. Through the cooperation of the three special-shaped arcs of different sizes of the anti-misinsertion connecting rod and the rod sleeve, different electrical performance parameters are calibrated according to different arc diameters, which can prevent modules with different electrical parameters from being misinserted or wrongly inserted into different application circuits, thereby further ensuring the safe use of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model provides a schematic diagram of the internal three-dimensional structure of a surge protector anti-misinsertion structure;

[0014] Figure 2 A schematic diagram of the enlarged details of the rod sleeve connecting rod shape structure of a surge protector proposed by the utility model;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of a surge protector anti-misinsertion structure (water drop type) in the prior art;

[0016] In the figure: 1. surge protection module; 2. base; 3. anti-mis-insertion connecting rod; 4. anti-mis-insertion rod cover; 5. screw. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1 -, the utility model provides an anti-misinsertion mechanism of a surge protector, comprising a surge protection module 1, a base 2, an anti-misinsertion connecting rod 3, an anti-misinsertion rod sleeve 4 and a screw 5, wherein the anti-misinsertion connecting rod 3 is installed under the surge protection module 1.

[0019] To summarize, the shape of the anti-misinsertion connecting rod 3 or the anti-misinsertion rod sleeve 4 of the surge protection module is changed, that is, the structure of three special-shaped arcs of different sizes connected, the cross-section parts are all designed with round heads and arc transitions, which increase the strength of the parts, and the three special-shaped circles must be in the same direction to be assembled with each other, avoiding misinsertion during the assembly process, even if there is a large external force for assembly, it will not be inserted, and wrong insertion can be effectively prevented. Through the cooperation of the three special-shaped arcs of different sizes of the anti-misinsertion connecting rod 3 and the anti-misinsertion rod sleeve 4, different electrical performance parameters are calibrated according to different arc diameters, which can prevent modules with different electrical parameters from being misinserted or wrongly inserted into different application circuits, thereby further ensuring the safe use of the power system.

[0020] The bottom of the anti-misinsertion connecting rod 3 under the surge protection module 1 is connected by three arcs of different sizes, and the middle hollow contour of the anti-misinsertion rod sleeve 4 on the base 2 adopts the corresponding shape of the anti-misinsertion connecting rod 3, which changes the shape of the anti-misinsertion connecting rod 3 or the anti-misinsertion rod sleeve 4 of the surge protection module, that is, a structure in which three arcs of different sizes are connected, and the cross-sectional parts are all designed with round heads and arc transitions, which increases the strength of the parts, and the three circles of the special-shaped parts must be in the same direction to be assembled with each other, avoiding misinsertion during assembly. Even if there is a large external force for assembly, it will not be inserted, which can effectively prevent wrong insertion.

[0021] The anti-misinsertion connecting rod 3 is connected by three arcs of different sizes, the diameters of the three arcs of different sizes are between 2mm and 6mm, and the difference in diameters of different arcs is above 0.5mm. The anti-misinsertion connecting rod 3 and the anti-misinsertion rod sleeve 4 are both plastic parts, preferably nylon. The combined assembly of the surge protection module 1 and the base 2 can only be achieved when the outer shape of the anti-misinsertion connecting rod 3 and the inner contour of the anti-misinsertion rod sleeve 4 are completely consistent. The anti-misinsertion rod 3 is embedded in the middle of the base 2. Through the cooperation of the three special-shaped arcs of different sizes of the anti-misinsertion connecting rod 3 and the anti-misinsertion rod sleeve 4, different electrical performance parameters are calibrated according to different arc diameters, which can prevent modules with different electrical parameters from being misinserted or wrongly inserted into different application circuits, thereby further ensuring the safe use of the power system.

[0022] During specific use, the shape of the anti-misinsertion connecting rod 3 or the anti-misinsertion rod sleeve 4 of the surge protection module is changed, that is, a structure in which three arcs of different sizes are connected, and the cross-section parts are all designed with round heads and arc transitions, which increase the strength of the parts, and the three circles of the special shapes must be in the same direction to be assembled with each other, avoiding misinsertion during the assembly process, and even if there is a large external force for assembly, it will not be inserted, which can effectively prevent wrong insertion. Through the cooperation of the three arcs of different sizes of the anti-misinsertion connecting rod 3 and the anti-misinsertion rod sleeve 4, different electrical performance parameters are calibrated according to different arc diameters, which can prevent modules with different electrical parameters from being misinserted or wrongly inserted into different application circuits, thereby further ensuring the safe use of the power system.

[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A surge protector anti-misinsertion mechanism, characterized in that: The invention comprises a surge protection module (1), a base (2), an anti-mis-insertion connecting rod (3), an anti-mis-insertion rod sleeve (4) and screws (5), wherein the anti-mis-insertion connecting rod (3) is installed below the surge protection module (1); the bottom of the anti-mis-insertion connecting rod (3) below the surge protection module (1) is connected by three arcs of different sizes; and the hollow contour in the middle of the anti-mis-insertion rod sleeve (4) on the base (2) adopts the corresponding shape of the anti-mis-insertion connecting rod (3).

2. The anti-misinsertion mechanism of the surge protector according to claim 1, characterized in that: The anti-misinsertion connecting rod (3) is connected by three circular arcs of different sizes, the diameters of the three circular arcs of different sizes are between 2 mm and 6 mm, and the difference between the diameters of the different circular arcs is greater than 0.5 mm.

3. The anti-misinsertion mechanism of the surge protector according to claim 1, characterized in that: The anti-mis-insertion connecting rod (3) and the anti-mis-insertion rod sleeve (4) are both made of nylon material.

4. The anti-misinsertion mechanism of the surge protector according to claim 1, characterized in that: The combined assembly of the surge protection module (1) and the base (2) can only be achieved when the outer shape of the anti-misinsertion connecting rod (3) and the inner contour of the anti-misinsertion rod sleeve (4) are completely consistent.

5. The anti-misinsertion mechanism of the surge protector according to claim 1, characterized in that: The anti-misinsertion connecting rod (3) is sleeved and embedded in the middle of the base (2).

Images