A moving assembly support structure and a high-voltage direct-current relay

Abstract

This utility model relates to the field of relay technology, specifically to a moving component support structure and a high-voltage DC relay, including a push rod, an insulating base connected to the push rod, and a bracket connected to the insulating base. An installation space for the moving component is formed between the bracket and the insulating base. The bracket includes two vertically distributed first arms, the lower ends of which are integrally formed with a first mortise and tenon structure. The insulating base is integrally formed with a second mortise and tenon structure. The first mortise and tenon structure and the second mortise and tenon structure are mortised and tenoned together. The first mortise and tenon structure is integrally formed with the first arm, and the second mortise and tenon structure is integrally formed with the insulating base. This reduces the number of components in the moving component support structure, thereby reducing production costs. Furthermore, the mortise and tenon connection between the first and second mortise and tenon structures effectively reduces assembly steps and improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a moving component support structure and a high-voltage DC relay. Background Technology

[0002] A high-voltage DC relay is an electromagnetic switching device specifically designed for controlling high-voltage direct current (DC) circuits. It functions to connect, disconnect, or switch circuits in high-voltage DC systems and is widely used in new energy, power electronics, and industrial automation.

[0003] High-voltage DC relays typically include an electromagnetic assembly, a moving assembly, and a stationary contact. The moving assembly includes a moving contact and a contact spring, which is mounted in a mounting space formed by a bracket and an insulating base. A push rod pushes the insulating base to achieve contact between the moving and stationary contacts. In existing technology, a planar bracket insert is usually injection-molded into the insulating base. The brackets are connected to the planar bracket by riveting, thereby providing support for the moving contact. For example, the patent application with authorization number CN208225813U, entitled "U-shaped bracket for moving assembly and its high-voltage DC relay," includes a specification sheet with... Figure 7 This structure has been disclosed. However, there is still room for improvement in this structure, which is reflected in the following aspects: 1. Redundant components: The planar support is made of metal, and the extra planar support leads to increased weight and material costs; 2. Complex process: The assembly steps of the support and the planar support are cumbersome, which affects production efficiency.

[0004] Therefore, this utility model further improves the U-shaped bracket of the moving component. Utility Model Content

[0005] The purpose of this utility model is to provide a moving component bracket and a high-voltage DC relay, which aims to improve the problems of high material cost and complicated assembly steps of existing moving component bracket structures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A moving component support structure includes a push rod, an insulating seat connected to the push rod, and a bracket connected to the insulating seat. An installation space for the moving component is formed between the bracket and the insulating seat. The bracket includes two vertically distributed first arms. The lower ends of the two first arms are integrally formed with a first tenon structure. The insulating seat is integrally formed with a second tenon structure. The first tenon structure and the second tenon structure are tenon-tenon connected.

[0008] Furthermore, the first tenon structure includes a locking hole through the arm body of the first support arm and a first locking block extending downward from the lower end of the first support arm; the second tenon structure includes a second locking block protruding outward from the side of the insulating base and a locking groove recessed from the bottom of the insulating base; the second locking block is engaged in the locking hole, and the first locking block is bent inward and engaged in the locking groove.

[0009] Furthermore, the first card block is a dovetail card block with a smaller outer diameter and a larger inner diameter, and the card slot is a dovetail groove.

[0010] Furthermore, the second mortise and tenon structure also includes raising blocks, which are disposed on both sides of the dovetail groove to raise the two groove wall areas of the dovetail groove.

[0011] Furthermore, the upper end of the second card block forms a downward-sloping guide slope.

[0012] Furthermore, the bottom center of the insulating base has a downward protruding elevation seat, the elevation of which is greater than the height of the first card block after it is bent inward.

[0013] Furthermore, the bracket also includes a second arm, which is disposed at the upper end of the two first arms and is integrally formed with the two first arms.

[0014] Furthermore, the first arm has a first hollow hole that penetrates its body above the card hole; the second arm has a second hollow hole at the connection point between its left and right sides and the first arm.

[0015] Furthermore, the middle edges of the front and rear sides of the second arm are provided with upwardly angled positioning bosses.

[0016] To achieve the above objectives, the present invention also adopts the following technical solution:

[0017] A high-voltage DC relay includes a moving component support structure, characterized in that: the moving component support structure is the moving component support structure described above.

[0018] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] 1. The first tenon and mortise structure is integrally formed with the first support arm, and the second tenon and mortise structure is integrally formed with the insulating base, reducing the number of accessories in the moving component support structure, thereby reducing production costs; and through the tenon and mortise connection of the first tenon and mortise structure and the second tenon and mortise structure, the assembly steps are effectively reduced and the assembly efficiency is improved.

[0020] 2. The second locking block engages in the locking hole to restrict the downward freedom of the bracket, and the first locking block engages in the locking groove to restrict the upward freedom of the bracket, ensuring the stability of the connection between the bracket and the insulating base.

[0021] 3. This utility model eliminates the need for an embedded metal planar support in the insulating base, thus reducing the weight of the entire component. Attached Figure Description

[0022] Figure 1 This is a diagram showing the usage state of the moving component support structure described in this utility model;

[0023] Figure 2 This is an exploded view of the moving component support structure of the present invention in use.

[0024] Figure 3 This is a schematic diagram of the bottom structure of the auxiliary contact protective sleeve described in this utility model;

[0025] Figure 4 This is a schematic diagram of the moving component support structure described in this utility model;

[0026] Figure 5 This is a schematic diagram of the assembly state of the moving component support structure described in this utility model;

[0027] Figure 6 This is an exploded structural diagram of the moving component support structure described in this utility model;

[0028] Figure 7 This is a schematic diagram of the support structure of the moving component support structure described in this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Push rod;

[0031] 2. Insulating base; 21. Second tenon structure; 211. Second locking block; 2111. Guide slope; 212. Slot; 213. Heightening block; 22. Heightening base;

[0032] 3. Bracket; 31. First arm; 311. First tenon structure; 3111. Locking hole; 3112. First locking block; 312. First hollow hole; 32. Second arm; 321. Second hollow hole; 322. Positioning boss;

[0033] 4. Installation space; 5. Moving contact; 6. Auxiliary contact protective sleeve; 61. Positioning groove; 7. Auxiliary moving contact. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0035] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0037] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Example

[0039] Please refer to the appendix. Figure 1-7 This embodiment discloses a moving component support structure, including a push rod 1, an insulating seat 2 connected to the push rod 1, and a support 3 connected to the insulating seat 2. An installation space 4 for the moving component is formed between the support 3 and the insulating seat 2. The support 3 includes two vertically distributed first arms 31, the lower ends of which are integrally formed with a first tenon and mortise structure 311. The insulating seat 2 is integrally formed with a second tenon and mortise structure 21, and the first tenon and mortise structure 311 and the second tenon and mortise structure 21 are mortised and tenoned together. Please refer to the attached diagram. Figure 1 and Figure 2 In this embodiment, the mounting space 4 is used to mount the moving contact 5.

[0040] The first tenon structure 311 is integrally formed with the first support arm 31, and the second tenon structure 21 is integrally formed with the insulating base 2, reducing the number of accessories in the moving component support structure, thereby reducing production costs; and through the tenon-and-mortise connection of the first tenon structure 311 and the second tenon structure 21, the assembly steps are effectively reduced and the assembly efficiency is improved.

[0041] Specifically, the first tenon structure 311 includes a locking hole 3111 penetrating the arm body of the first support arm 31 and a first locking block 3112 extending downward from the lower end of the first support arm 31. The second tenon structure 21 includes a second locking block 211 protruding outward from the side of the insulating base 2 and a locking groove 212 recessed upward from the bottom of the insulating base 2. The second locking block 211 engages in the locking hole 3111, and the first locking block 3112 is bent inward and engaged in the locking groove 212. The second locking block 211 engages in the locking hole 3111, restricting the downward freedom of the support 3, and the first locking block 3112 engages in the locking groove 212, restricting the upward freedom of the support 3, thus ensuring the stability of the connection between the support 3 and the insulating base 2.

[0042] Furthermore, the first locking block 3112 is a dovetail locking block with a smaller outer diameter and a larger inner diameter, and the locking groove 212 is a dovetail groove. The dovetail groove provides a limiting force on the side of the first locking block 3112 towards the center of the insulating base 2, so that the first locking block 3112 can only be separated from the insulating base 2 by bending in the opposite direction under the action of external force, ensuring that the first locking block 3112 and the locking groove 212 remain in a mutually engaged state under the condition of no external force.

[0043] In this embodiment, the second mortise and tenon structure 21 further includes a heightening block 213, which is disposed on both sides of the dovetail groove to increase the height of the two groove wall areas. The heightening block 213 increases the vertical limiting space of the slot 212 on the first locking block 3112, ensuring that the first locking block 3112 can still maintain mutual engagement even when it is bent to a certain extent in the reverse direction during use, thereby improving the limiting effect of the slot 212 on the first locking block 3112.

[0044] Please refer to the appendix. Figure 6 Furthermore, the upper end of the second locking block 211 forms a downwardly sloping guide slope 2111. The guide slope 2111 slopes outward from the inner side of the upper end of the second locking block 211 to the outer side of the middle end of the second locking block 211. During the assembly process, it guides the first support arm 31, so that the bottom end of the first support arm 31 can move to the bottom of the second locking block 211, so that the second locking block 211 can enter the locking hole 3111.

[0045] Please refer to the appendix. Figure 4-6 In this embodiment, the bottom center of the insulating base 2 has a downward protruding elevation base 22. The protrusion height of the elevation base 22 is greater than the height of the first locking block 3112 after it is bent inward, ensuring that other structures will not come into contact with the end face of the first locking block 3112 and cause leakage.

[0046] Please refer to the appendix. Figure 7Specifically, the bracket 3 also includes a second arm 32, which is located at the upper end of the two first arms 31 and is integrally formed with the two first arms 31. The second arm 32 connects the two first arms 31 to form a "U" shaped bracket 3. At the same time, the first arms 31 and the second arms 32 adopt an integral forming process, which further reduces the number of parts in the moving component bracket structure, reduces assembly steps, and improves assembly efficiency.

[0047] In this embodiment, the first arm 31 has a first perforated hole 312 above the locking hole 3111, penetrating the arm body; the second arm 32 has second perforated holes 321 at the connection points with the first arm 31 on its left and right sides. While ensuring the support 3 has good structural strength, the first perforated hole 312 and the second perforated hole 321 effectively reduce the material usage of the support 3, saving costs and effectively reducing the weight of the support 3, while also forming a heat dissipation structure to lower the temperature of the support 3 during use.

[0048] The second arm 32 has upwardly angled positioning bosses 322 on the middle edges of its front and rear sides. Please refer to the attached document. Figure 1-3 In this embodiment, the top surface of the second arm 32 is used to install the auxiliary contact protective sleeve 6, and the auxiliary moving contact 7 is provided inside the auxiliary contact protective sleeve 6. The bottom surface of the auxiliary contact protective sleeve 6 is provided with positioning grooves 61 on both sides, and positioning bosses 322 are embedded in the positioning grooves 61 to limit the auxiliary contact protective sleeve 6 and ensure the accuracy of the installation position of the auxiliary contact protective sleeve 6.

[0049] This embodiment also discloses a high-voltage DC relay, including a moving component support structure, which is the moving component support structure described above.

[0050] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A moving component support structure, comprising a push rod, an insulating base connected to the push rod, and a bracket connected to the insulating base, wherein the bracket and the insulating base form an installation space for the moving component, characterized in that: The bracket includes two vertically distributed first arms, the lower ends of the two first arms are integrally formed with a first tenon structure, the insulating base is integrally formed with a second tenon structure, and the first tenon structure and the second tenon structure are mortised and tenoned together.

2. The moving component support structure as described in claim 1, characterized in that: The first tenon structure includes a locking hole through the arm body of the first support arm and a first locking block extending downward from the lower end of the first support arm; the second tenon structure includes a second locking block protruding outward from the side of the insulating base and a locking groove recessed upward from the bottom of the insulating base; the second locking block is engaged in the locking hole, and the first locking block is bent inward and engaged in the locking groove.

3. The moving component support structure as described in claim 2, characterized in that: The first card block is a dovetail card block with a smaller outer diameter and a larger inner diameter, and the card slot is a dovetail slot.

4. The moving component support structure as described in claim 3, characterized in that: The second mortise and tenon structure also includes heightening blocks, which are disposed on both sides of the dovetail groove to increase the height of the two groove wall areas of the dovetail groove.

5. The moving component support structure as described in claim 2, characterized in that: The upper end of the second card block forms a downward-sloping guide slope.

6. The moving component support structure as described in claim 2, characterized in that: The bottom center of the insulating base has a downward protrusion of a height-increasing seat, the height of which is greater than the height of the first card block after it is bent inward.

7. The moving component support structure as described in claim 2, characterized in that: The bracket also includes a second arm, which is located at the upper end of the two first arms and is integrally formed with the two first arms.

8. The moving component support structure as described in claim 7, characterized in that: The first arm has a first hollow hole that penetrates through its body above the card hole; the second arm has a second hollow hole at the junction of its left and right sides with the first arm.

9. The moving component support structure as described in claim 7, characterized in that: The second arm has upwardly sloping positioning bosses on the middle edges of its front and rear sides.

10. A high-voltage DC relay, comprising a moving component support structure, characterized in that: The moving component support structure is the moving component support structure as described in any one of claims 1-9.

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