Current limiting module and horse protection assembly

Abstract

The utility model discloses a current limiting module and a horse protection assembly, and relates to the technical field of low-voltage electric appliances, and the current limiting module comprises a housing and an arc extinguishing assembly. The shell is provided with an assembling groove. The arc extinguishing assembly is at least partially arranged in the assembling groove. The side wall of the assembling groove is provided with a limiting piece, the limiting piece is limited on one side of the arc extinguishing assembly, at least part of the limiting piece and the arc extinguishing assembly are in interference limiting, the bottom wall of the assembling groove is provided with a clamping piece, the arc extinguishing assembly is provided with a clamping hole matched with the clamping piece, and the clamping piece is arranged in the clamping hole. And the clamping piece penetrates through the clamping hole and is clamped to the peripheral side of the clamping hole. According to the invention, the assembling stability of the arc extinguishing assembly is improved, and the loosening or falling of the arc extinguishing assembly caused by vibration or impact in the working process can be improved or even avoided.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a current limiting module and a current protection component. Background Art

[0002] The motor thermal magnetic circuit breaker (such as model CDP6-32) is a widely used device in the electrical field, especially in the working voltage environment of 400 / 415V, its stability and reliability are crucial to ensure the safe operation of the circuit. In practical applications, in the specifications of rated current above 14A, it is difficult for this circuit breaker to keep consistent with the following specifications and reach the ultimate breaking capacity of 100KA. This limitation makes it a potential safety hazard when handling high current loads.

[0003] In order to solve this problem, a new type of current limiting module was designed. This current limiting module is installed at the front end of the motor thermal magnetic release, and effectively improves the breaking capacity of the circuit breaker by accurately controlling the current flow direction and flow. After installing this module, the performance of the motor thermal magnetic circuit breaker under high current load has been significantly improved, which can better ensure the safe operation of the circuit.

[0004] However, the arc extinguishing parts in the current limiting module are movable parts, which means that after being installed in the housing, the arc extinguishing parts cannot be fixed and can be easily taken out. This design often causes the arc extinguishing parts to fall off, and the fallen arc extinguishing parts may fail to be discovered in time, which may cause the product to fail at the customer end and fail to interrupt the short-circuit current, thus causing safety accidents. Utility Model Content

[0005] The present application provides a current limiting module and a arc protection component, which can improve the stability of the arc extinguishing component assembly, and can improve or even avoid the loosening or falling off of the arc extinguishing component due to vibration or impact during operation.

[0006] In a first aspect, the present application provides a current limiting module, which includes a housing and an arc extinguishing assembly.

[0007] The housing is provided with an assembly groove, and the arc extinguishing assembly is at least partially arranged in the assembly groove.

[0008] A limiting member is provided on the side wall of the assembly groove, and the limiting member is limited on one side of the arc extinguishing assembly. At least a portion of the limiting member and the arc extinguishing assembly are limited by interference. A clamping member is provided on the bottom wall of the assembly groove, and a clamping hole matched with the clamping member is provided on the arc extinguishing assembly. The clamping member passes through the clamping hole and is clamped to the surrounding side of the clamping hole.

[0009] The housing is the main part of the current limiting module and can be made of hard plastic shell material to ensure the stability and safety of the current limiting module. An assembly groove for assembling the arc extinguishing component is provided inside the housing. The assembly groove can ensure the stable installation of the arc extinguishing component.

[0010] The arc extinguishing component is the core component of the current limiting module. When an arc occurs in the circuit, the arc extinguishing component can quickly extinguish the arc, thereby preventing the circuit from short circuiting or being damaged.

[0011] During the assembly process, the arc extinguishing assembly is partially or completely placed in the assembly groove of the housing. In order to ensure the stability of the arc extinguishing assembly, a limit piece is provided on the side wall of the assembly groove. These limit pieces are precisely limited on one side of the arc extinguishing assembly, and a tight connection is formed between the arc extinguishing assembly and the assembly groove by means of interference fit, which improves the stability of the arc extinguishing assembly assembly and can improve or even avoid the loosening or falling off of the arc extinguishing assembly due to vibration or impact during operation.

[0012] In some examples, the clamping member is clamped onto a pressure plate on the arc extinguishing assembly, the pressure plate is provided with the clamping hole, and the clamping member passes through the clamping hole and is clamped to a side of the pressure plate facing away from the bottom wall.

[0013] The clamping piece is used to fix the pressure plate on the arc extinguishing assembly to ensure that the arc extinguishing assembly can be firmly installed in the assembly groove to prevent it from shifting or falling off during operation.

[0014] The pressure plate can be used as a key component to support and fix the entire arc extinguishing assembly, and its structure can be set to be both strong and light. The pressure plate is provided with snap-in holes, and the size and position of these holes are carefully calculated to ensure that the snap-in parts can accurately and firmly pass through and snap-in to the pressure plate.

[0015] The clamping piece or the pressing plate can be made of a material with a certain elasticity and a certain bending and deformation ability, so that the clamping piece can smoothly pass through the clamping hole.

[0016] In some examples, at least one of the clamping members is provided, and the clamping member includes a connecting portion and a clamping portion. A first end of the connecting portion is connected to the bottom wall, and a second end of the connecting portion extends in a direction away from the bottom wall.

[0017] The clamping part is arranged at the second end of the connecting part, and the clamping part is interference fit with the clamping hole. After the clamping part passes through the clamping hole, the clamping part is clamped to the side of the pressing plate away from the bottom wall.

[0018] The arrangement of the clamping piece can ensure sufficient connection strength and stability. The clamping piece mainly consists of two parts: a connecting part and a clamping part.

[0019] The connecting part is the main part of the entire clamping member, and the first end of the connecting part is connected to the bottom wall. The second end of the connecting part extends in a direction away from the bottom wall, which helps to increase the relative contact area between the clamping member and the pressure plate, thereby improving its connection ability.

[0020] The clamping portion is arranged at the second end of the connecting portion, and an interference fit is adopted between the clamping portion and the clamping hole, that is, the size of the clamping portion is slightly larger than the size of the clamping hole. In this way, during the insertion process, the clamping portion will be subjected to a certain pressure, so that the size of the clamping hole can be expanded during the process of penetrating the clamping hole. After the clamping portion passes through the clamping hole, the size of the clamping hole is restored and the clamping is completed. At this time, the clamping portion is clamped on the side of the pressure plate away from the bottom wall.

[0021] After the clamping part is clamped to the side of the pressure plate away from the bottom wall, a stable connection structure is formed. This connection method not only ensures the stability of the clamping part, but also makes the entire device safer and more reliable during operation. The above-mentioned clamping matching method can effectively prevent the clamping part from loosening or falling off during use.

[0022] In some examples, the connecting portion is a cylinder or a prism, the shape of the snap-fit ​​hole matches the shape of the connecting portion, and the cross-sectional size of the snap-fit ​​portion is larger than the cross-sectional size of the connecting portion.

[0023] When the cross-sectional size of the clamping part is larger than the cross-sectional size of the connecting part, the clamping part and the clamping hole can be interference fit, and the elastic deformation ability of the pressure can be used to realize the clamping of the clamping part and the pressure plate after the clamping part passes through the clamping hole. The above-mentioned adaptation means that the size of the connecting part is the same as the size of the clamping hole, or the size of the connecting part is slightly smaller than the size of the clamping hole. Taking the connecting part as a cylinder as an example, the diameter of the connecting part is equal to the diameter of the connecting hole, or the diameter of the connecting part is slightly smaller than the diameter of the clamping hole.

[0024] In some examples, a guide structure is provided on a side of the clamping portion facing away from the connecting portion.

[0025] In this way, the clamping part can be quickly inserted into the clamping hole before clamping, until the clamping part completely passes through the clamping hole and clamping is achieved. In this process, the clamping hole on the pressure plate is temporarily enlarged by the clamping part, and after the clamping part completely passes through the clamping hole, the clamping hole shrinks and returns to its original size, and the clamping part is now clamped to the side of the pressure plate away from the bottom wall.

[0026] In some examples, at least one of the limiting members is provided, and a size of the limiting member gradually increases in a direction of the limiting member toward the bottom wall.

[0027] The size of these limiters gradually increases in the direction toward the bottom wall. As the pressure plate is gradually installed, the size of the limiters increases, and the limiting effect on the pressure plate becomes tighter and tighter. This progressive limit setting can ensure the stability and reliability of the pressure plate during the assembly process.

[0028] In some examples, the assembly groove includes a first side wall and a second side wall that are oppositely disposed, two of the limiting members are disposed on the first side wall, and two of the limiting members are disposed on the second side wall.

[0029] The distance between the two limiting members on the first side wall is different from the distance between the two limiting members on the second side wall.

[0030] The two limiting members arranged on the first side wall can limit the first side of the pressing plate, ensuring that the pressing plate will not deviate from the predetermined position during the assembly process. Similarly, the second side wall is also provided with two limiting members, which can correspond to the limiting members on the first side wall and be limited on the second side of the pressing plate. The four limiting members can jointly limit the pressing plate stably in the assembly groove, and the clamping member can clamp the pressing plate to achieve the effect of completely locking the pressing plate.

[0031] In some examples, a cover plate is further included, the cover plate extends toward the arc extinguishing assembly, and the extending portion covers a side of the arc extinguishing assembly away from the assembly groove.

[0032] The cover plate in the current limiting module can be arranged to extend toward the arc extinguishing assembly. The extended portion can not only cover the side of the arc extinguishing assembly away from the assembly groove to isolate it from the external environment, but also effectively improve the sealing of the corresponding arc extinguishing chamber.

[0033] The extended part of the cover plate can improve the sealing of the arc extinguishing chamber and can also serve as an arc-isolating plate for the arc-extinguishing assembly. When the arc-extinguishing assembly generates an arc, the arc-isolating plate can effectively block the spread of the arc and prevent it from damaging the surrounding equipment. This setting improves the safety of the equipment and extends the service life of the equipment.

[0034] In some examples, a cover body is disposed on the shell, a clearance groove is disposed on a side of the cover body facing the shell, and the cover plate can be embedded in the clearance groove.

[0035] Alternatively, the housing cover is arranged on another adjacent housing, and the side of the housing facing away from the assembly groove is provided with the clearance groove.

[0036] The above arrangement makes the cover and the shell more tightly combined, reducing various risks caused by looseness or misalignment. At the same time, due to the embedded cover, the sealing of the shell is also greatly improved, effectively preventing the intrusion of foreign impurities such as dust and moisture, thereby extending the service life of the internal components of the shell. When it is necessary to open or close the shell, only the cover needs to be properly operated to open and close the shell, which is convenient and quick.

[0037] One shell can be placed on another adjacent shell. This arrangement not only makes the entire structure more stable, but also saves space to a certain extent. In this way, when there are multiple shells, only one cover body is required, which improves material utilization and reduces costs. A clearance groove is also provided on the side of the shell away from the assembly groove. The presence of this clearance groove allows the extended part of the cover plate to be accommodated in the clearance groove, thereby improving the connection stability of the cover plate. In addition, the above arrangement allows the two shells to fit together more closely when connected, thereby further improving the stability and sealing of the entire structure.

[0038] In a second aspect, the present application provides a motor protection assembly, including a motor protection device and the above-mentioned current limiting module, wherein the current limiting module is connected in series on one side of the motor protection device.

[0039] The arc extinguishing component with the above-mentioned current limiting module of the present application can form a tight connection between the arc extinguishing component and the assembly groove, improve the stability of the assembly of the arc extinguishing component, and can improve or even avoid the loosening or falling off of the arc extinguishing component due to vibration or impact during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the examples or prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 This is a schematic diagram of the structure explosion of a current limiting module in an example of the present application;

[0042] Figure 2 This is a schematic diagram of the structure of the current limiting module in an example of the present application after the cover body is changed and hidden;

[0043] Figure 3 This is a schematic diagram of the structure of an arc extinguishing component in an example of the present application;

[0044] Figure 4 This is a structural schematic diagram of an example of the present application in which only the middle pressure plate of the arc extinguishing assembly is arranged in the assembly slot;

[0045] Figure 5 For this application Figure 4 A in the middle shows a partial enlarged schematic diagram of the pressure plate being installed in the assembly groove through the clamping parts and the limiting parts;

[0046] Figure 6 This is a schematic diagram of the structure of a shell in an example of this application;

[0047] Figure 7 For this application Figure 6 The partially enlarged schematic diagram of the arrangement of the clamping member and the limiting member in the assembly groove is shown at B in the middle;

[0048] Figure 8 This is a structural schematic diagram of the housing from another perspective in an example of the present application;

[0049] Fig. 9 For this application Figure 8 The center C shows a partially enlarged stereoscopic schematic diagram of the arrangement of the clamping member and the limiting member in the assembly groove;

[0050] Fig.10 This is a schematic diagram of the structural explosion of the current limiting module in an example of the present application from another perspective.

[0051] Reference numerals:

[0052] 100, housing; 110, assembly groove; 111, bottom wall; 112, first side wall; 113, second side wall; 120, snap-fitting piece; 121, connecting portion; 122, snap-fitting portion; 123, guide structure; 130, limiting piece; 200, arc-extinguishing assembly; 210, pressure plate; 211, snap-fitting hole; 220, arc-extinguishing grid; 300, cover plate; 400, cover body; 500, avoidance groove. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.

[0054] To solve the above technical problems, please refer to Figure 1-Figure 10 As shown, the first aspect of the present application proposes a current limiting module, which can improve the assembly stability of the arc extinguishing component 200, and can improve or even avoid the loosening or falling off of the arc extinguishing component 200 due to vibration or impact during operation.

[0055] Reference Figure 1 and Figure 2 In some examples, the current limiting module includes a housing 100 and an arc extinguishing assembly 200. The housing 100 is provided with an assembly groove 110. The arc extinguishing assembly 200 is at least partially disposed in the assembly groove 110.

[0056] A limiting member 130 is provided on the side wall of the assembly groove 110 , and the limiting member 130 is limited on one side of the arc extinguishing assembly 200 , and at least a portion of the limiting member 130 is limited by interference with the arc extinguishing assembly 200 to improve the assembly stability of the arc extinguishing assembly 200 .

[0057] A clamping member 120 is provided on the bottom wall 111 of the assembly groove 110, and a clamping hole 211 matching the clamping member 120 is provided on the arc extinguishing assembly 200. The clamping member 120 passes through the clamping hole 211 and is clamped to the peripheral side of the clamping hole 211, so that after the clamping member 120 clamps the arc extinguishing assembly 200, it can prevent the arc extinguishing assembly 200 from being separated from the assembly groove 110. The cooperation between the stopper 130 and the clamping member 120 can stably assemble the arc extinguishing assembly 200 in the assembly groove 110.

[0058] The current limiting module can improve the stability and safety of the corresponding electrical equipment. The current limiting module mainly includes two parts: a housing 100 and an arc extinguishing assembly 200.

[0059] The housing 100 is the main part of the current limiting module and can be made of a hard plastic shell material to ensure the stability and safety of the current limiting module. The housing 100 is provided with an assembly groove 110 for assembling the arc extinguishing assembly 200. The assembly groove 110 can ensure the stable installation of the arc extinguishing assembly 200.

[0060] The arc extinguishing component 200 is a core component in the current limiting module. When an arc is generated in the circuit, the arc extinguishing component 200 can quickly extinguish the arc, thereby preventing the circuit from being short-circuited or damaged.

[0061] During the assembly process, the arc extinguishing assembly 200 is partially or completely placed in the assembly groove 110 of the housing 100. In order to ensure the stability of the arc extinguishing assembly 200, a limiting member 130 is provided on the side wall of the assembly groove 110. These limiting members 130 are precisely limited on one side of the arc extinguishing assembly 200, and a tight connection is formed between the arc extinguishing assembly 200 and the assembly groove 110 by means of interference fit, thereby improving the stability of the assembly of the arc extinguishing assembly 200, and improving or even avoiding the loosening or falling off of the arc extinguishing assembly 200 due to vibration or impact during the working process.

[0062] A clamping member 120 is also provided on the bottom wall 111 of the assembly groove 110. The clamping member 120 is matched with the clamping hole 211 on the arc extinguishing assembly 200, and further fixes the arc extinguishing assembly 200 by penetrating the clamping hole 211 and clamping on the peripheral side of the clamping hole 211. This clamping method is not only simple and easy to operate, but also firm and reliable, and effectively prevents the arc extinguishing assembly 200 from being separated from the assembly groove 110 during operation.

[0063] Through the cooperation of the stopper 130 and the clamping member 120, the arc extinguishing assembly 200 is stably assembled in the assembly groove 110 of the housing 100. This arrangement not only improves the overall performance of the current limiting module, but also ensures its reliability and stability in various harsh environments. At the same time, this structure also provides convenience for subsequent maintenance and replacement, reducing maintenance costs and time costs.

[0064] In some examples, the clamping member 120 is clamped on the pressure plate 210 on the arc extinguishing assembly 200, and the pressure plate 210 is provided with a clamping hole 211. The clamping member 120 passes through the clamping hole 211 and is clamped to the side of the pressure plate 210 away from the bottom wall 111. In this way, after the clamping member 120 clamps the arc extinguishing assembly 200, the arc extinguishing assembly 200 is prevented from being separated from the assembly groove 110.

[0065] The clamping member 120 is used to fix the pressure plate 210 on the arc extinguishing assembly 200 to ensure that the arc extinguishing assembly 200 can be firmly installed in the assembly groove 110 to prevent it from shifting or falling off during operation.

[0066] The pressure plate 210 can be used as a key component to support and fix the entire arc extinguishing assembly 200, and its structure can be set to be both strong and light. The pressure plate 210 is provided with clamping holes 211, and the size and position of these holes are carefully calculated to ensure that the clamping member 120 can accurately and firmly pass through and be clamped on the pressure plate 210.

[0067] The clamping member 120 or the pressing plate 210 may be made of a material with a certain elasticity and a certain bending and deformation capability, so that the clamping member 120 can smoothly pass through the clamping hole 211 .

[0068] Taking the elasticity of the pressure plate 210 as an example, when the clamping member 120 passes through the clamping hole 211, the size of the clamping hole 211 can become larger with the support of the clamping member 120. After the clamping member 120 passes through the clamping hole 211, the area where the clamping hole 211 is located can use its own elasticity to restore its original state, so that the size of the clamping hole 211 is reduced to its original size, thereby achieving that the clamping member 120 is firmly clamped on the side of the pressure plate 210 away from the bottom wall 111.

[0069] Taking the elasticity of the clamping member 120 as an example, once the clamping member 120 passes through the clamping hole 211, the clamping member 120 can restore to its original shape by its own elasticity, thereby firmly clamping on the side of the pressing plate 210 away from the bottom wall 111. This arrangement not only ensures the stability of the clamping member 120, but also makes the installation and removal process more convenient.

[0070] The pressing plate 210 and the clamping member 120 may also be configured as specific elastic structures as required. The clamping member 120 in the present application is integrally formed on the housing 100, and may also be fixedly connected to the housing 100 as required.

[0071] By means of the above-mentioned clamping method, the arc extinguishing assembly 200 is firmly fixed in the assembly groove 110. Even in the case of strong vibration or external impact, the arc extinguishing assembly 200 can maintain its stability and will not fall off easily. This arrangement greatly improves the reliability and safety of the equipment and reduces the risk of failure and accidents caused by the falling off of the arc extinguishing assembly 200.

[0072] Reference Figure 3 The arc extinguishing assembly 200 includes two pressing plates 210 and a plurality of arc extinguishing grids 220. The two pressing plates 210 are arranged opposite to each other, and the plurality of arc extinguishing grids 220 are installed between the two pressing plates 210. Each pressing plate 210 is provided with a plurality of clamping grooves adapted to the arc extinguishing grids 220. The pressing plate 210 can be made of red steel paperboard, etc. The area where the arc extinguishing assembly 200 is located can be an arc extinguishing chamber.

[0073] The arc extinguishing assembly 200 is used to extinguish the arc generated by the current in the current limiting module to prevent it from causing a fire or damaging the equipment. The two pressure plates 210 are the main supporting structure of the arc extinguishing assembly 200. The two pressure plates 210 are arranged opposite to each other to form a stable frame. The pressure plate 210 can be made of a strong and well-insulating material such as red steel cardboard to ensure that it can withstand high voltage and high temperature environments. At the same time, the shape and size of the pressure plate 210 are also accurately calculated to meet different arc extinguishing requirements.

[0074] A plurality of arc extinguishing grids 220 are installed between the pressure plates 210. These grids can be generally made of materials with high electrical conductivity, such as iron, iron alloy, aluminum, aluminum alloy, copper or silver, etc. The arc extinguishing grids 220 are used to guide the arc to move along the path of the grids and gradually weaken the energy of the arc, ultimately achieving the purpose of extinguishing the arc.

[0075] In order to facilitate the installation and fixing of the arc extinguishing grid 220, each pressing plate 210 is provided with a plurality of clamping grooves adapted to the arc extinguishing grid 220. The shape and size of these clamping grooves match the shape of the grid, so that the grid can be firmly fixed on the pressing plate 210.

[0076] Reference Figure 4 and Figure 5 In some examples, at least one clip 120 is provided, and the clip 120 includes a connecting portion 121 and a clip portion 122 .

[0077] A first end of the connecting portion 121 is connected to the bottom wall 111 , and a second end of the connecting portion 121 extends in a direction away from the bottom wall 111 .

[0078] The clamping part 122 is arranged at the second end of the connecting part 121, and the clamping part 122 is interference fit with the clamping hole 211. After the clamping part 122 passes through the clamping hole 211, the clamping part 122 is clamped to the side of the pressure plate 210 in the arc extinguishing assembly 200 away from the bottom wall 111. In this way, the clamping of the clamping part 120 can be more stable and reliable.

[0079] The arrangement of the clamping member 120 can ensure sufficient connection strength and stability. The clamping member 120 mainly consists of two parts: a connecting portion 121 and a clamping portion 122 .

[0080] The connecting portion 121 is the main body of the entire clamping member 120, and the first end of the connecting portion 121 is connected to the bottom wall 111. The second end of the connecting portion 121 extends in a direction away from the bottom wall 111, which helps to increase the relative contact area between the clamping member 120 and the pressing plate 210, thereby improving its connection ability.

[0081] The clamping portion 122 is arranged at the second end of the connecting portion 121, and an interference fit is adopted between the clamping portion 122 and the clamping hole 211, that is, the size of the clamping portion 122 is slightly larger than the size of the clamping hole 211, so that during the insertion process, the clamping portion 122 will be subjected to a certain pressure, so that the size of the clamping hole 211 can be expanded in the process of penetrating the clamping hole 211. After the clamping portion 122 passes through the clamping hole 211, the size of the clamping hole 211 is restored and the clamping is completed. At this time, the clamping portion 122 is clamped on the side of the pressure plate 210 away from the bottom wall 111.

[0082] After the clamping portion 122 is clamped to the side of the pressing plate 210 away from the bottom wall 111, a stable connection structure is formed. This connection method not only ensures the stability of the clamping member 120, but also makes the entire device safer and more reliable during operation. The above-mentioned clamping matching method can effectively prevent the clamping member 120 from loosening or falling off during use.

[0083] The advantages of setting the clamping part 120 are its stability, reliability and speed, which can achieve faster assembly efficiency. While ensuring the connection stability of the arc extinguishing component 200, the assembly efficiency is higher, thereby reducing the production efficiency and production cost of the entire current limiting module.

[0084] Reference Figure 6 and Figure 7In some examples, the connection part 121 is a cylinder or a prism, the shape of the clamping hole 211 is adapted to the shape of the connection part 121, and the cross-sectional size of the clamping part 122 is larger than the cross-sectional size of the connection part 121. The above adaptation means that the size of the connection part 121 is the same as the size of the clamping hole 211, or the size of the connection part 121 is slightly smaller than the size of the clamping hole 211. Taking the connection part 121 as a cylinder as an example, the connection part 121 can rotate relative to the clamping hole 211, and the diameter of the connection part 121 is equal to the diameter of the connection hole, or the diameter of the connection part 121 is slightly smaller than the diameter of the clamping hole 211.

[0085] When the cross-sectional dimension of the clamping portion 122 is larger than that of the connecting portion 121 , the clamping portion 122 can be interference fit with the clamping hole 211 , and by utilizing the elastic deformation ability of pressure, the clamping portion 122 can be clamped with the pressure plate 210 after the clamping portion 122 passes through the clamping hole 211 .

[0086] The shape of the connecting portion 121 includes but is not limited to a cylindrical or prism shape, and this arrangement can better connect the pressure plate 210. At the same time, the shape of the clamping hole 211 must be compatible with the shape of the connecting portion 121 to ensure that the two can be smoothly combined and remain stable. This adaptation can be specifically reflected in not only that the size of the connecting portion 121 is exactly the same as the size of the clamping hole 211, but also that the size of the connecting portion 121 is slightly smaller than the size of the clamping hole 211, so as to facilitate the smooth assembly of the two.

[0087] Taking the connecting portion 121 as a cylinder as an example, the size of its diameter can be used as a reference parameter. The diameter of the connecting portion 121 is completely equal to the diameter of the clamping hole 211, so that the two can be better combined. In practical applications, the diameter of the connecting portion 121 is usually set to be slightly smaller than the diameter of the clamping hole 211, which can ensure smooth assembly and further improve assembly efficiency.

[0088] It is an important restriction that the cross-sectional dimension of the clamping portion 122 is larger than the cross-sectional dimension of the connecting portion 121. This arrangement enables the clamping portion 122 to utilize the principle of interference fit when passing through the clamping hole 211, and to generate elastic deformation between the clamping portion 122 and the pressing plate 210 through pressure. When the clamping portion 122 completely passes through the clamping hole 211, due to the restoring force of the elastic deformation, the clamping portion 122 will fit tightly with the pressing plate 210, thereby achieving the clamping of the two. This clamping method is not only firm and reliable, but also can resist certain external force impacts, ensuring the stability and safety of the connection.

[0089] Reference Figure 8 and Fig. 9In some examples, a guide structure 123 is provided on the side of the clamping portion 122 away from the connecting portion 121. In this way, the clamping portion 122 can be quickly inserted into the clamping hole 211 before clamping, until the clamping portion 122 completely passes through the clamping hole 211 and the clamping is achieved. In this process, the clamping hole 211 on the pressing plate 210 will be temporarily enlarged by the clamping portion 122. After the clamping portion 122 completely passes through the clamping hole 211, the clamping hole 211 shrinks and returns to its original size. At this time, the clamping portion 122 will be clamped to the side of the pressing plate 210 away from the bottom wall 111.

[0090] The existence of the guide structure 123 enables the clamping portion 122 to be quickly and accurately inserted into the clamping hole 211 before clamping. This is because the guide structure 123 can guide the clamping portion 122 to move along a predetermined trajectory, thereby avoiding clamping failure caused by direction deviation or improper angle. At the same time, the setting of the guide structure 123 also takes into account the convenience of operation, so that the user can easily insert the clamping portion 122 into the clamping hole 211.

[0091] When the clamping portion 122 passes through the clamping hole 211, the clamping hole 211 on the pressing plate 210 is temporarily enlarged by the clamping portion 122. This setting is to ensure that the clamping portion 122 can smoothly pass through the clamping hole 211, and the clamping failure will not occur due to the small hole diameter. At the same time, the pressing plate 210 has a certain elasticity, and can automatically restore the clamping hole 211 to its original size after the clamping portion 122 completely passes through the clamping hole 211, thereby ensuring the stability and durability of the pressing plate 210.

[0092] When the clamping portion 122 completely passes through the clamping hole 211, the clamping hole 211 will shrink and return to its original size. At this time, the clamping portion 122 has been successfully clamped to the side of the pressing plate 210 away from the bottom wall 111. This arrangement ensures the stability and reliability of the clamping, and can also effectively prevent the clamping portion 122 from loosening or falling off during subsequent use.

[0093] The guide structure 123 may be a guide cone or a guide slope. It may also be other guide structures 123 as long as the guiding effect of the clamping portion 122 relative to the clamping hole 211 can be achieved. The guide cone and the guide slope are two common forms of the guide structure 123, which play an irreplaceable role in different application scenarios.

[0094] The guide cone surface is a guide structure 123 with a conical feature. Its feature is that when the clamping portion 122 is matched with the clamping hole 211, the conical structure can guide the clamping portion 122 to smoothly enter the clamping hole 211 along a certain angle and direction. This setting can not only improve the efficiency and accuracy of assembly, but also effectively reduce the friction and resistance during the assembly process, thereby reducing the wear of the clamping hole 211, so that the elasticity can be better maintained, and the clamping stability is improved.

[0095] Compared with the guiding cone, the guiding bevel is more flexible and can be customized and adjusted according to actual needs. Its working principle is to control the matching process of the clamping part 122 and the clamping hole 211 through the angle and length of the bevel to ensure accurate alignment and stable connection between the two.

[0096] In addition to the guide cone and the guide slope, there are other forms of guide structures 123. These guide structures 123 may have different shapes, sizes and materials, but their common goal is to achieve the guiding effect of the clamping portion 122 relative to the clamping hole 211. The most suitable form of the guide structure 123 can be selected according to specific application requirements and constraints to ensure the stability and reliability of the device.

[0097] In some examples, at least one stopper 130 is provided, and the size of the stopper 130 gradually increases in the direction of the stopper 130 toward the bottom wall 111. In this way, during the assembly process of the pressing plate 210, as the pressing plate 210 is installed, the stopper 130 stops the pressing plate 210 more tightly, until some of the stoppers 130 achieve interference stop on the peripheral side of the pressing plate 210.

[0098] The limiting member 130 can effectively limit the pressing plate 210. The number of these limiting members 130 can be at least one, and at least one limiting member 130 is arranged around the pressing plate 210 to provide necessary support and limitation.

[0099] It is worth noting that the size of these limiting members 130 gradually increases in the direction toward the bottom wall 111. As the pressing plate 210 is gradually installed in place, the size of the limiting members 130 increases, and the limiting effect on the pressing plate 210 becomes tighter and tighter. This progressive limiting setting can ensure the stability and reliability of the pressing plate 210 during the assembly process.

[0100] Specifically, when the pressure plate 210 begins to be installed, the limiter 130 begins to play its role. At first, due to the relatively small size of the limiter 130, the limiting effect of the limiter 130 on the pressure plate 210 is not obvious. As the pressure plate 210 gradually goes deeper, the size of the limiter 130 gradually increases, and the restriction on the pressure plate 210 becomes more and more obvious. Finally, when the pressure plate 210 is installed in place, part of the limiter 130 will achieve interference limiting on the peripheral side of the pressure plate 210, that is, the maximum limiting distance of the limiter 130 is greater than the gap width between the pressure plate 210 and the side wall, thereby achieving a tight fixation of the pressure plate 210.

[0101] The above-mentioned interference limit setting not only improves the stability of the pressing plate 210, but also enhances its durability. Since the limiter 130 tightly fixes the pressing plate 210, the pressing plate 210 is not easy to loosen or deform during use, thereby extending its service life. At the same time, this setting can also effectively reduce the risk of damage caused by improper assembly or external force impact, and improve the overall quality and reliability of the product.

[0102] According to different application requirements and scenarios, the number, size and layout of the limiter 130 can be adjusted to meet different assembly requirements. This flexibility enables the limiter 130 to play a role in a wider range of fields and provide stable and reliable support and limit functions for various products.

[0103] In some examples, the limiting member 130 is a half-cut truncated cone structure, a half-cut prism structure, or a wedge structure. The height of the limiting member 130 can be greater than two-thirds of the thickness of the pressing plate 210 to ensure a better limiting effect.

[0104] The specific shape of the stopper 130 can be set to a half-cut truncated cone structure, a half-cut prism structure, a wedge structure, etc. These structures not only have a good limiting effect, but also can reduce the processing difficulty and cost to a certain extent. Of course, the specific shape of the stopper 130 needs to be determined according to the actual application scenario and specific needs.

[0105] In addition, the height of the limiter 130 is also a parameter that needs attention. In order to ensure that the limiter 130 can fully play its limiting role, it is usually required that the height of the limiter 130 is greater than two-thirds of the thickness of the pressing plate 210. In this way, even when the pressing plate 210 is subjected to a large external force, the limiter 130 can still maintain a stable limit on the pressing plate 210 to prevent it from shifting or falling off.

[0106] In some examples, the assembly slot 110 includes a first side wall 112 and a second side wall 113 that are oppositely disposed. Two stoppers 130 are disposed on the first side wall 112 , and two stoppers 130 are disposed on the second side wall 113 .

[0107] The distance between the two limiting members 130 on the first side wall 112 is different from the distance between the two limiting members 130 on the second side wall 113 .

[0108] The two stoppers 130 provided on the first side wall 112 can limit the first side of the pressing plate 210, ensuring that the pressing plate 210 does not deviate from the predetermined position during the assembly process. Similarly, the second side wall 113 is also provided with two stoppers 130, which can correspond to the stoppers 130 on the first side wall 112 and be limited on the second side of the pressing plate 210. The four stoppers 130 can together stably limit the pressing plate 210 in the assembly groove 110, and the clamping member 120 can clamp the pressing plate 210 to achieve the effect of completely locking the pressing plate 210.

[0109] The spacing between the two stoppers 130 on the first side wall 112 is different from the spacing between the two stoppers 130 on the second side wall 113. This asymmetric arrangement helps to adapt to the pressure plates 210 of different sizes and shapes, and improves the flexibility and adaptability of assembly. This arrangement can also prevent misoperation during assembly to a certain extent, and improve the accuracy and reliability of assembly. In addition, the above arrangement can form a certain shear force between the relatively arranged stoppers 130, further improving the stop effect.

[0110] Reference Fig.10 In some examples, the current limiting module further includes a cover plate 300, which extends toward the arc extinguishing assembly 200, and the extended portion is provided on the side of the arc extinguishing assembly 200 away from the assembly groove 110. In this way, the cover plate 300 can cover the arc extinguishing chamber corresponding to the arc extinguishing assembly 200, thereby improving the sealing of the arc extinguishing chamber. The extended portion of the cover plate 300 can serve as an arc isolation plate of the arc extinguishing assembly 200.

[0111] The cover plate 300 in the current limiting module can be arranged to extend toward the arc extinguishing assembly 200. The extended portion can not only cover the side of the arc extinguishing assembly 200 away from the assembly groove 110 to isolate it from the external environment, but also effectively improve the sealing of the corresponding arc extinguishing chamber.

[0112] The extended portion of the cover plate 300 can improve the sealing of the arc extinguishing chamber and can also serve as an arc isolation plate for the arc extinguishing assembly 200. When the arc extinguishing assembly 200 generates an arc, the arc isolation plate can effectively block the spread of the arc and prevent it from causing damage to surrounding equipment. This arrangement improves the safety of the equipment and also extends the service life of the equipment.

[0113] Reference Fig.10 In some examples, a cover body 400 is disposed on the shell 100 , and a clearance groove is disposed on a side of the cover body 400 facing the shell 100 , and the cover plate 300 can be embedded in the clearance groove.

[0114] Alternatively, the housing 100 is covered on another adjacent housing 100 , and a clearance groove is provided on a side of the housing 100 away from the assembly groove 110 .

[0115] The cover 400 can be covered on the housing 100, and the cover 400 can protect the internal structure of the housing 100. The side of the cover 400 facing the housing 100 is provided with a clearance groove.

[0116] The above arrangement makes the cover 400 and the housing 100 more tightly combined, reducing various risks caused by looseness or misalignment. At the same time, due to the embedded cover 300, the sealing of the housing 100 is also greatly improved, effectively preventing the intrusion of foreign impurities such as dust and moisture, thereby extending the service life of the internal components of the housing 100. When the housing 100 needs to be opened or closed, it only needs to properly operate the cover 300 to realize the opening and closing of the housing 100, which is convenient and quick.

[0117] One shell 100 can be placed on another adjacent shell 100. This arrangement not only makes the entire structure more stable, but also saves space to a certain extent. In this way, when there are multiple shells 100, only one cover body 400 is required, thereby improving the utilization rate of materials and reducing costs. A clearance groove is also provided on the side of the shell 100 that is away from the assembly groove 110. The presence of this clearance groove allows the extended portion of the cover plate 300 to be accommodated in the clearance groove, thereby improving the connection stability of the cover plate 300. In addition, the above arrangement allows the two shells 100 to fit together more closely when connected, thereby further improving the stability and sealing of the entire structure.

[0118] In a second aspect, the present application provides a motor protection assembly, including a motor protection device and the above-mentioned current limiting module, wherein the current limiting module is connected in series on one side of the motor protection device.

[0119] The arc extinguishing component with the above-mentioned current limiting module of the present application can form a tight connection between the arc extinguishing component 200 and the assembly groove 110, thereby improving the assembly stability of the arc extinguishing component 200, and can improve or even avoid the loosening or falling off of the arc extinguishing component 200 due to vibration or impact during operation.

[0120] Specifically, the current limiting module can improve the stability and safety of the corresponding electrical equipment. The current limiting module mainly includes two parts: a housing 100 and an arc extinguishing assembly 200. The housing 100 is the main part of the current limiting module and can be made of a hard plastic shell material to ensure the stability and safety of the current limiting module. An assembly groove 110 for assembling the arc extinguishing assembly 200 is provided inside the housing 100. The assembly groove 110 can ensure the stable installation of the arc extinguishing assembly 200.

[0121] The arc extinguishing component 200 is a core component in the current limiting module. When an arc is generated in the circuit, the arc extinguishing component 200 can quickly extinguish the arc, thereby preventing the circuit from being short-circuited or damaged.

[0122] During the assembly process, the arc extinguishing assembly 200 is partially or completely placed in the assembly groove 110 of the housing 100. In order to ensure the stability of the arc extinguishing assembly 200, a limiting member 130 is provided on the side wall of the assembly groove 110. These limiting members 130 are precisely limited on one side of the arc extinguishing assembly 200, and a tight connection is formed between the arc extinguishing assembly 200 and the assembly groove 110 by means of interference fit, thereby improving the stability of the assembly of the arc extinguishing assembly 200, and improving or even avoiding the loosening or falling off of the arc extinguishing assembly 200 due to vibration or impact during the working process.

[0123] The same or similar numbers in the drawings of this application correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0124] The above are only preferred examples of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A current limiting module, characterized in that: The current limiting module comprises: The housing is provided with a mounting groove; an arc extinguishing assembly, at least partially disposed in the assembly groove; A limiting member is provided on the side wall of the assembly groove, and the limiting member is limited on one side of the arc extinguishing assembly. At least a portion of the limiting member and the arc extinguishing assembly are limited by interference. A clamping member is provided on the bottom wall of the assembly groove, and a clamping hole matched with the clamping member is provided on the arc extinguishing assembly. The clamping member passes through the clamping hole and is clamped to the surrounding side of the clamping hole.

2. The current limiting module according to claim 1, characterized in that: The clamping piece is clamped on the pressure plate on the arc extinguishing assembly, the pressure plate is provided with the clamping hole, and the clamping piece passes through the clamping hole and is clamped to a side of the pressure plate away from the bottom wall.

3. The current limiting module according to claim 2, characterized in that: The clamping member is provided with at least one, and the clamping member comprises: A connecting portion, a first end of which is connected to the bottom wall, and a second end of which extends in a direction away from the bottom wall; The clamping part is arranged at the second end of the connecting part, and the clamping part is interference fit with the clamping hole. After the clamping part passes through the clamping hole, the clamping part is clamped to the side of the pressure plate away from the bottom wall.

4. The current limiting module according to claim 3, characterized in that: The connecting portion is a cylinder or a prism, the shape of the clamping hole is adapted to the shape of the connecting portion, and the cross-sectional size of the clamping portion is larger than the cross-sectional size of the connecting portion.

5. The current limiting module according to claim 3, characterized in that: A guide structure is arranged on a side of the clamping portion away from the connecting portion.

6. The current limiting module according to any one of claims 1 to 5, characterized in that: At least one limiting member is provided, and a size of the limiting member gradually increases in a direction of the limiting member toward the bottom wall.

7. The current limiting module according to claim 6, characterized in that: The assembly groove comprises a first side wall and a second side wall which are arranged opposite to each other, the first side wall is provided with two of the limiting members, and the second side wall is provided with two of the limiting members; The distance between the two limiting members on the first side wall is different from the distance between the two limiting members on the second side wall.

8. The current limiting module according to any one of claims 1 to 5, characterized in that: It also includes a cover plate, which extends toward the arc extinguishing assembly, and the extended portion covers a side of the arc extinguishing assembly away from the assembly groove.

9. The current limiting module according to claim 8, characterized in that: The shell is provided with a cover body, and a clearance groove is provided on a side of the cover body facing the shell, and the cover plate can be embedded in the clearance groove; Alternatively, the housing cover is arranged on another adjacent housing, and the side of the housing facing away from the assembly groove is provided with the clearance groove.

10. A horse protection component, characterized in that: include: Motor protection devices; and, The current limiting module according to any one of claims 1 to 9, wherein the current limiting module is connected in series on one side of the motor protection device.

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