Mounting base for contact box

The locking and docking mechanism enables the contact box to be quickly fixed in narrow spaces, solving the problem of complex traditional installation and improving installation efficiency.

CN224164496UActive Publication Date: 2026-04-24WANHAI (WENZHOU) AUTOMATIC CONTROL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WANHAI (WENZHOU) AUTOMATIC CONTROL TECHNOLOGY CO LTD
Filing Date
2026-03-26
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Traditional contact boxes are cumbersome and complicated to install when docking with the base in a narrow space, and the difficulty in rotating them makes installation difficult.

Method used

The system employs a locking mechanism and a docking mechanism. The base is fixed inside the distribution cabinet by bolts. The bottom shell is positioned and plugged into the base. The fixing column and threaded shaft are inserted into the insertion hole. The locking ring is threaded and connected. The clamping plate is clamped into the docking seat. The elasticity of the clamping plate and spring is used to achieve quick fixation.

Benefits of technology

The device enables quick locking and securing of the contact box in confined spaces, simplifying the installation process, reducing the need for manual support, and improving installation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a mounting base for a contact box, and relates to the technical field of contact boxes. The bottom of the contact box is fixedly connected with a bottom shell, the inner side of the bottom shell is provided with a base, the top of the base is fixedly connected with a plurality of butt joint seats, the locking mechanism is arranged at the top of the base, and the locking mechanism is used for locking and fixing the bottom shell on the base. According to the utility model, the locking mechanism is arranged, specifically, the base is installed in the power distribution cabinet through bolts, then the contact box is in positioning insertion connection with the base through the bottom shell at the bottom, the fixed column and the threaded shaft are correspondingly inserted into the insertion holes, the clamping plate is in butt joint with the butt joint seat, and then the locking ring is in threaded connection with the threaded shaft; when the locking ring is in contact with the surface of the bottom shell, the bottom shell is locked and fixed, so that the installation can be quickly completed, and the contact box can be smoothly locked and fixed even in a position with a relatively narrow space.
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Description

Technical Field

[0001] This utility model belongs to the field of contact box technology, and in particular relates to a mounting base for a contact box. Background Technology

[0002] A contact box is a functional component in electrical equipment used to house, support, and protect the contact system (moving and stationary contacts). It is usually a core component of high-voltage or low-voltage switchgear (such as circuit breakers, disconnectors, contactors, etc.). Its main function is to ensure reliable contact or separation of contacts during opening and closing operations and to guarantee electrical insulation performance.

[0003] Traditional contact boxes are usually installed on a base, which is then installed inside the distribution cabinet. However, when the contact box is connected to the base, it is usually installed by rotating it in a spiral manner. Due to the narrow space inside the distribution cabinet, it is difficult for the contact box to rotate. Therefore, it is necessary to connect the contact box to the base from the outside. However, this method makes it difficult to install the base inside the distribution cabinet, making the installation of the contact box cumbersome and complicated. Utility Model Content

[0004] The purpose of this utility model is to provide a mounting base for a contact box. By setting a locking mechanism, specifically, the base is installed inside the distribution cabinet using bolts. Then, the contact box is positioned and inserted into the base via its bottom shell. The fixing post and threaded shaft are inserted into corresponding holes, and the locking plate aligns with the docking seat. A locking ring is then threaded onto the threaded shaft. When the locking ring contacts the surface of the bottom shell, it locks the bottom shell in place. This method allows for quick installation, even in confined spaces, ensuring the contact box can be easily locked and fixed. It solves the problem of traditional contact boxes being installed on a base inside the distribution cabinet, where the contact box is typically installed using a spiral rotation method. Due to the limited space inside the distribution cabinet, this makes rotation difficult, necessitating external docking of the contact box to the base. However, this method makes it difficult to install the base inside the distribution cabinet, resulting in cumbersome and complex contact box installation.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a mounting base for a contact box, comprising a contact box, a bottom shell fixedly connected to the bottom of the contact box, a base disposed inside the bottom shell, and a plurality of mating seats fixedly connected to the top of the base, and further comprising:

[0007] A locking mechanism, disposed on the top of the base, is used to lock the bottom shell securely to the base; and

[0008] A docking mechanism is provided on the inner top of the bottom shell. The docking mechanism is used to dock the bottom shell and the base and then restrict the bottom shell together with the contact box onto the base.

[0009] The base is bolted to the distribution cabinet, and the inner side of the bottom shell is adapted to the outer side of the base.

[0010] Furthermore, the locking mechanism includes fixed posts fixedly connected to the four corners of the top of the base. A threaded shaft is fixedly connected to the top of the fixed post, and a locking ring is threaded onto the threaded shaft. Insertion holes are provided at the four corners of the top of the bottom shell. The fixed posts are adapted to the insertion holes, and the bottom shell is inserted into the fixed posts through the insertion holes. The locking ring is located on the top of the bottom shell, and the contact box is integrally formed with the bottom shell. The base is installed in the distribution cabinet with bolts, and then the contact box is positioned and inserted into the base through the bottom shell. The fixed posts and threaded shaft will be inserted into the insertion holes accordingly, and the clamping plate will mate with the docking seat. Then, the locking ring is threaded onto the threaded shaft. When the locking ring contacts the surface of the bottom shell, it will lock and fix the bottom shell. This method can quickly complete the installation and can successfully lock and fix the contact box even in a relatively narrow space.

[0011] Furthermore, the docking mechanism includes a rectangular seat fixedly connected to the top of the inner side of the bottom shell. The bottom of the rectangular seat is provided with a mounting plate, and two locking plates are fixedly connected to the bottom of the mounting plate. The outer side of the locking plates is provided with protrusions, and the docking seat is provided with a locking groove. When the bottom shell and the base are positioned and inserted, the locking plates will be inserted into the locking grooves, and the protrusions on the locking plates will be engaged in the locking grooves. The locking plates are reset by their own elasticity and the elasticity of the springs, so that the protrusions are smoothly engaged in the locking grooves. At this time, the bottom shell and the contact box are restricted on the base, so the operator does not need to support them, which facilitates the subsequent locking work.

[0012] The rectangular base corresponds to the docking base, and the card plate is positioned and inserted into the card slot.

[0013] Furthermore, the mounting plate is fixedly connected to the rectangular base by bolts, and several springs are fixedly connected between the two clamping plates; the springs are used to apply elastic force to the clamping plates, making the clamping plates more stable after engaging with the docking base.

[0014] Furthermore, the slot is T-shaped. After the card plate is inserted into the slot, the protrusion is inserted into the slot. After the bottom shell is connected to the base, the bottom of the mounting plate will contact the top of the docking seat. The top and bottom of the protrusion are both sloped. Since the top and bottom of the protrusion are both sloped, the card plate can be pushed by the slope during docking, and the card plate can be pushed again by the slope during disassembly.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model features a locking mechanism. Specifically, the base is bolted into the distribution cabinet, and then the contact box is positioned and inserted into the base through the bottom shell. The fixing post and threaded shaft are inserted into the corresponding insertion holes, and the clamping plate mates with the docking seat. Then, the locking ring is threaded onto the threaded shaft. When the locking ring contacts the surface of the bottom shell, it locks the bottom shell in place. This method allows for quick installation and can successfully lock and fix the contact box even in confined spaces.

[0017] 2. This utility model, by setting a docking mechanism, specifically, when the bottom shell and the base are positioned and inserted, the card plate will be inserted into the card slot, and the protrusion on the card plate will be engaged in the card slot. The card plate is reset by using its own elasticity and the elasticity of the spring, so that the protrusion is smoothly engaged in the card slot. At this time, the bottom shell and the contact box are restricted on the base, so the staff does not need to support them, which facilitates the subsequent locking work.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the bottom structure of the bottom shell of this utility model;

[0022] Figure 3 This is a schematic diagram of the top structure of the docking seat of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the bottom shell of this utility model;

[0024] Figure 5 This utility model Figure 4 A magnified structural diagram of A in the diagram.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Contact box; 11. Bottom shell; 111. Insertion hole; 12. Base; 13. Connecting seat; 131. Slot; 2. Locking mechanism; 21. Fixing post; 22. Threaded shaft; 23. Locking ring; 3. Connecting mechanism; 31. Rectangular seat; 32. Mounting plate; 33. Clamping plate; 331. Protrusion; 34. Spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1-5 As shown, this utility model is a mounting base for a contact box, including a contact box 1, a bottom shell 11 fixedly connected to the bottom of the contact box 1, a base 12 provided inside the bottom shell 11, and a plurality of mating seats 13 fixedly connected to the top of the base 12, and further including:

[0029] Locking mechanism 2, located on top of base 12, is used to lock and fix bottom shell 11 onto base 12; and

[0030] The docking mechanism 3 is located on the inner top of the bottom shell 11. The docking mechanism 3 is used to dock the bottom shell 11 and the base 12 and then restrict the bottom shell 11 together with the contact box 1 on the base 12.

[0031] The base 12 is bolted to the distribution cabinet, and the inner side of the bottom shell 11 is adapted to the outer side of the base 12.

[0032] The locking mechanism 2 includes fixed posts 21 fixedly connected to the four corners of the top of the base 12. A threaded shaft 22 is fixedly connected to the top of each fixed post 21, and a locking ring 23 is threaded onto the threaded shaft 22. Insertion holes 111 are provided at the four corners of the top of the bottom shell 11. The fixed posts 21 are fitted into the insertion holes 111, and the bottom shell 11 is inserted into the fixed posts 21 through the insertion holes 111. The locking ring 23 is located on the top of the bottom shell 11. The contact box 1 is integrally formed with the bottom shell 11. The base 12 is then mounted on the base 12 using bolts. Inside the distribution cabinet, the contact box 1 is then positioned and inserted into the base 12 via the bottom shell 11. The fixing post 21 and the threaded shaft 22 will be inserted into the corresponding socket 111, and the clamping plate 33 will mate with the docking seat 13. Then, the locking ring 23 is threaded onto the threaded shaft 22. When the locking ring 23 contacts the surface of the bottom shell 11, it will lock and fix the bottom shell 11. This method can quickly complete the installation and can successfully lock and fix the contact box 1 even in a relatively narrow space.

[0033] The docking mechanism 3 includes a rectangular seat 31 fixedly connected to the top of the inner side of the bottom shell 11. The bottom of the rectangular seat 31 is provided with a mounting plate 32. Two locking plates 33 are fixedly connected to the bottom of the mounting plate 32. The outer side of the locking plates 33 is provided with a protrusion 331. The docking seat 13 has a slot 131 inside. When the bottom shell 11 and the base 12 are positioned and inserted, the locking plate 33 will be inserted into the slot 131, and the protrusion 331 on the locking plate 33 will be locked into the slot 131. The locking plate 33 is reset by the elasticity of the locking plate 33 itself and the elasticity of the spring 34, so that the protrusion 331 can be smoothly locked into the slot 131. At this time, the bottom shell 11 and the contact box 1 are restricted on the base 12, so the operator does not need to support them, which facilitates the subsequent locking work.

[0034] Among them, the rectangular seat 31 corresponds to the docking seat 13, and the card plate 33 is positioned and inserted into the card slot 131.

[0035] Mounting plate 32 is fixedly connected to rectangular base 31 by bolts, and several springs 34 are fixedly connected between two clamping plates 33; the springs 34 are used to apply elastic force to the clamping plates 33, so that the clamping plates 33 are more stable after engaging with the docking seat 13.

[0036] The slot 131 is T-shaped. After the card plate 33 is inserted into the slot 131, the protrusion 331 is inserted into the slot 131. After the bottom shell 11 and the base 12 are connected, the bottom of the mounting plate 32 will contact the top of the docking seat 13. The top and bottom of the protrusion 331 are both sloped. Since the top and bottom of the protrusion 331 are both sloped, the card plate 33 can be pushed by the slope during docking, and the card plate 33 can be pushed again by the slope during disassembly.

[0037] One specific application of this embodiment is:

[0038] In use, the base 12 is installed in the distribution cabinet with bolts to lock and fix the base 12. When the contact box 1 needs to be installed, the contact box 1 is positioned and inserted into the base 12 through the bottom shell 11. The fixing post 21 and the threaded shaft 22 will be inserted into the corresponding insertion hole 111, and the clamping plate 33 on the mounting plate 32 will mate with the clamping groove 131 on the docking seat 13. At this time, the clamping plate 33 will be inserted into the groove 131, and the protrusion 331 on the clamping plate 33 will be locked into the groove 131. During docking, the clamping plate 33 will be squeezed, and the spring 34 will be squeezed. Then, the clamping plate 33 will be reset by its own elasticity and the elasticity of the spring 34, so that the protrusion 331 can be smoothly locked into the groove 131. At this time, the bottom shell 11 and the contact box 1 are fixed in place. With the head box 1 secured to the base 12, the operator does not need to provide support, facilitating subsequent locking. Finally, the locking ring 23 is threaded onto the threaded shaft 22. When the locking ring 23 contacts the surface of the bottom shell 11, it locks and secures the bottom shell 11, thus locking and securing the contact box 1. This method allows for quick installation without rotating the contact box 1, and it can be easily locked and secured even in confined spaces. Furthermore, since the mounting plate 32 is fixed to the rectangular base 31 by bolts, the mounting plate 32 is detachable. By removing the bolts, the mounting plate 32 can be removed, and the retaining plate 33 and spring 34 can be disassembled together, allowing for replacement when the retaining plate 33 and spring 34 become fatigued.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A mounting base for a contact box, comprising a contact box, a bottom shell fixedly connected to the bottom of the contact box, a base disposed inside the bottom shell, and a plurality of mating seats fixedly connected to the top of the base, characterized in that, Also includes: A locking mechanism is provided on the top of the base, and the locking mechanism is used to lock the bottom shell to the base. as well as A docking mechanism is provided on the inner top of the bottom shell. The docking mechanism is used to dock the bottom shell and the base and then restrict the bottom shell together with the contact box onto the base. The base is bolted to the distribution cabinet, and the inner side of the bottom shell is adapted to the outer side of the base.

2. The mounting base for a contact box according to claim 1, characterized in that, The locking mechanism includes fixed posts fixedly connected to the four corners of the top of the base, a threaded shaft fixedly connected to the top of the fixed post, a locking ring threadedly connected to the threaded shaft, and insertion holes provided at the four corners of the top of the bottom shell.

3. A mounting base for a contact box according to claim 2, characterized in that, The fixing post is adapted to the insertion hole, the bottom shell is inserted into the fixing post through the insertion hole, the locking ring is set on the top of the bottom shell, and the contact box is integrally formed with the bottom shell.

4. A mounting base for a contact box according to claim 3, characterized in that, The docking mechanism includes a rectangular seat fixedly connected to the top of the inner side of the bottom shell, a mounting plate is provided at the bottom of the rectangular seat, two clamping plates are fixedly connected to the bottom of the mounting plate, protrusions are provided on the outer side of the clamping plates, and a clamping groove is provided inside the docking seat; The rectangular base corresponds to the docking base, and the card plate is positioned and inserted into the card slot.

5. A mounting base for a contact box according to claim 4, characterized in that, The mounting plate is fixedly connected to the rectangular base by bolts, and several springs are fixedly connected between the two mounting plates.

6. A mounting base for a contact box according to claim 4, characterized in that, The card slot is T-shaped. After the card plate is inserted into the card slot, the protrusion will be inserted into the inside of the card slot.

7. A mounting base for a contact box according to claim 4, characterized in that, After the bottom shell is connected to the base, the bottom of the mounting plate will contact the top of the docking seat, and both the top and bottom of the protrusion are sloped.