Assembling structure of sealing cup and inner supporting cover and high-voltage direct-current relay

Abstract

The utility model discloses an assembly structure of a sealing cup and an inner support cover and a high-voltage direct-current relay, which comprises the sealing cup and the inner support cover embedded in the sealing cup in an interference manner, and an assembly positioning structure is arranged between the sealing cup and the inner support cover. According to the utility model, the inner support cover is fastened and assembled in the sealing cup by adopting the interference fit structure, but the assembly positioning structure is arranged between the sealing cup and the inner support cover, so that when the inner support cover is embedded and assembled in the sealing cup in an interference manner and is pressed in place, the inner support cover is tightly assembled in the sealing cup; the inner supporting cover can be prevented from elastically retreating relative to the sealing cup due to the elastic deformation characteristic of the inner supporting cover by utilizing the assembly positioning structure, so that the inner supporting cover can be accurately positioned and mounted at the preset depth position of the sealing cup, and the consistency and the reliability of product process parameters are favorably improved; and good consistency of the height dimension of the product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to an assembly structure of a sealing cup and an inner support cover and a high-voltage direct current relay. Background Art

[0002] The sealing cup and inner support cover of the high-voltage DC relay in the prior art are assembled by interference fit, that is, the inner support cover is tightened in the sealing cup with interference fit. However, since the inner support cover made of resin material will elastically retreat a certain distance relative to the sealing cup when assembled with the inner support cover, the inner support cover is not properly installed in the sealing cup, which ultimately leads to the problem of poor product height dimensional consistency and poor mechanical parameter consistency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an assembly structure of a sealing cup and an inner support cover, which mainly solves the technical problem that the existing inner support cover and the sealing cup are assembled by interference fit, which is prone to poor consistency in product height dimensions due to the elastic retreat of the inner support cover relative to the sealing cup.

[0004] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0005] An assembly structure of a sealing cup and an inner support cover comprises a sealing cup and an inner support cover interference-embedded in the sealing cup, wherein an assembly positioning structure for preventing the inner support cover from rebounding relative to the sealing cup is arranged between the sealing cup and the inner support cover.

[0006] Furthermore, a first positioning portion is provided on the sealing cup, and a second positioning portion is provided on the inner support cover. When the inner support cover is pressed into place in the sealing cup, the first positioning portion and the second positioning portion are configured to cooperate with each other to form an assembly positioning structure for preventing the inner support cover from rebounding relative to the sealing cup.

[0007] Furthermore, the first positioning portion is a card hole arranged on the side wall of the sealing cup, and the second positioning portion is a card protrusion arranged on the side wall of the inner support cover. When the inner support cover is pressed into place in the sealing cup, the card protrusion on the side wall of the inner support cover is correspondingly inserted into the card hole on the side wall of the sealing cup, and the card protrusion and the card hole cooperate with each other to form a snap-on assembly positioning structure.

[0008] Furthermore, two left-right symmetrical clamping protrusions are arranged on the side wall of the inner support cover, and two clamping holes are opened on the side wall of the sealing cup to be respectively snap-fitted with the two clamping protrusions on the inner support cover.

[0009] Furthermore, a convex rib for interference fit with the inner side wall of the sealing cup is formed on the inner support cover.

[0010] Furthermore, the convex rib is configured to be interference fit with the inner side wall of the sealing cup at the position where the clamping hole is opened, and the clamping protrusion is formed on the convex rib.

[0011] Furthermore, the first positioning portion is a limiting protrusion arranged at the top of the inner wall of the sealing cup, and the second positioning portion is formed by the top outer edge of the inner support cover, so that when the inner support cover is pressed into place in the sealing cup, the limiting protrusion on the sealing cup and the top outer edge of the inner support cover are pressed and limited to form an assembly positioning structure.

[0012] Based on the same inventive concept, the utility model also provides a high-voltage DC relay, comprising any of the above-mentioned assembly structures of the sealing cup and the inner support cover.

[0013] Furthermore, it also includes two stationary contacts. Two stationary contact mounting holes for mounting the stationary contacts are provided on the inner support cover. The two stationary contacts are respectively and adaptively fixedly mounted at the two stationary contact mounting holes.

[0014] Furthermore, it also includes a moving contact piece driven by the pushing part, the moving contact piece is located inside the cavity of the inner support cover, and the lower ends of the two static contacts respectively extend from the two static contact mounting holes of the inner support cover into the cavity of the inner support cover, and respectively correspond to the two contact ends of the moving contact piece up and down, and the moving contact piece is contacted and positioned with the bottom of the sealing cup through the lower end of the pushing part.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] In the assembly structure of the sealing cup and the inner support cover and the high-voltage DC relay described in the utility model, the inner support cover is tightly assembled in the sealing cup by using an interference fit structure, but because an assembly positioning structure is provided between the sealing cup and the inner support cover, when the inner support cover is interference fitly embedded in the sealing cup and pressed into place, the assembly positioning structure can be used to prevent the inner support cover from elastically retreating relative to the sealing cup due to its own elastic deformation characteristics, thereby ensuring that the inner support cover can be accurately positioned and installed at a preset depth position of the sealing cup, which is beneficial to improving the consistency and reliability of the product's mechanical parameters, thereby ensuring good consistency in the product's height dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the inner support cover of the first embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the sealing cup of the first embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the assembly of the sealing cup and the inner support cover of the first embodiment of the utility model.

[0020] Figure 4It is a structural cross-sectional view of the high-voltage DC relay of the first embodiment of the utility model.

[0021] Description of labels:

[0022] 1. Sealing cup, 2. Inner support cover, 11. First positioning portion, 21. Second positioning portion, 22. Raised rib, 23. Stationary contact mounting hole, 3. Stationary contact, 4. Moving contact piece. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Embodiment 1

[0026] Please refer to the attached Figure 1 To Attachment Figure 3 One embodiment of the utility model provides an assembly structure of a sealing cup and an inner support cover, including a sealing cup 1 and an inner support cover 2 interference-embedded in the sealing cup 1, and an assembly positioning structure is provided between the sealing cup 1 and the inner support cover 2. It can be understood that in this embodiment, the inner support cover 2 is fastened and assembled in the sealing cup 1 by an interference fit structure, but since an assembly positioning structure is provided between the sealing cup 1 and the inner support cover 2 in this embodiment, when the inner support cover 2 is interference-embedded and assembled in the sealing cup 1 and pressed into place, the assembly positioning structure can be used to prevent the inner support cover 2 from elastically retreating relative to the sealing cup 1 due to its own elastic deformation characteristics, thereby ensuring that the inner support cover 2 can be accurately positioned and installed at a preset depth position of the sealing cup 1, which is beneficial to improving the consistency and reliability of product process parameters, thereby ensuring good consistency in product height dimensions.

[0027] Please refer to the attached Figure 1 To Attachment Figure 3In one preferred embodiment, a first positioning portion 11 is provided on the sealing cup 1, and a second positioning portion 21 is provided on the inner support cover 2. When the inner support cover 2 is pressed into place in the sealing cup 1, the first positioning portion 11 and the second positioning portion 21 are configured to cooperate with each other to form an assembly positioning structure for preventing the inner support cover 2 from rebounding relative to the sealing cup 1. In one preferred embodiment, the first positioning portion 11 is a card hole provided on the side wall of the sealing cup 1, and the second positioning portion 21 is a card protrusion provided on the side wall of the inner support cover 2. When the inner support cover 2 is pressed into place in the sealing cup 1, the card protrusion on the side wall of the inner support cover 2 is correspondingly inserted into the card hole on the side wall of the sealing cup 1, and the card protrusion and the card hole cooperate with each other to form a snap-on assembly positioning structure.

[0028] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, two symmetrical clamping protrusions are provided on the side wall of the inner support cover 2, and two clamping holes are provided on the side wall of the sealing cup 1 to be snap-fitted with the two clamping protrusions on the inner support cover 2. However, those skilled in the art should understand that in other embodiments, other numbers of assembly positioning structures may be provided between the inner support cover 2 and the sealing cup 1, and are not limited to the specific implementation methods disclosed in this embodiment. For example, three groups of assembly positioning structures or four groups or more may be provided, as long as the inner support cover 2 can be prevented from elastically retreating relative to the sealing cup 1 during the assembly process. Those skilled in the art may make specific arrangements according to specific needs.

[0029] Please refer to the attached Figure 1 To Attachment Figure 3 In one preferred embodiment, a convex rib 22 is formed on the inner support cover 2 for interference fit with the inner side wall at the location where the clamping hole of the sealing cup 1 is provided, and the clamping protrusion is formed on the convex rib 22. It can be understood that since the clamping protrusion on the side wall of the inner support cover 2 and the clamping hole on the side wall of the sealing cup 1 are not interference fit structures, there may be a risk of glue leakage after sealing. In this embodiment, by adding the convex rib 22, the periphery of the clamping protrusion and the clamping hole at the matching position can be improved to have an interference fit, thereby improving the risk of glue leakage at the clamping protrusion and the clamping hole. In addition, the convex rib 22 can also be used to improve the assembly coaxiality between the inner support cover 2 and the sealing cup 1.

[0030] Please refer to the attached Figure 1 To Attachment Figure 4 An embodiment of the utility model further provides a high-voltage DC relay, comprising an assembly structure of a sealing cup and an inner support cover according to any of the above embodiments.

[0031] Please refer to the attached Figure 1 To Attachment Figure 4In one preferred embodiment, preferably, two static contacts 3 are further included, and two static contact mounting holes 23 for mounting the static contacts 3 are provided on the inner support cover 2, and the two static contacts 3 are respectively fixedly mounted at the two static contact mounting holes 23 in an adaptive manner. In this embodiment, since the static contacts 3 are mounted on the inner support cover 2, the mounting position of the inner support cover 2 relative to the sealing cup 1 is fixed by utilizing the assembly structure of the sealing cup and the inner support cover, thereby ensuring that the static contacts 3 will not move upward due to the elastic retreat of the inner support cover 2, and finally ensuring good consistency in product height dimensions.

[0032] Please refer to the attached Figure 1 To Attachment Figure 4 In one preferred embodiment, it is preferred that it further includes a moving contact piece 4 driven by a pushing part, the moving contact piece 4 is located inside the cavity of the inner support cover 2, the moving contact piece 4 is positioned by contacting the bottom of the sealing cup 1 through the lower end of the driving part, and the lower ends of the two static contacts 3 extend from the two static contact mounting holes 23 of the inner support cover 2 into the cavity of the inner support cover 2, and correspond to the two contact ends of the moving contact piece 4 up and down, respectively, and the moving contact piece 4 is positioned by contacting the bottom of the sealing cup 1 through the lower end of the pushing part. In this embodiment, since the static contact 3 is mounted on the inner support cover 2, the assembly structure of the sealing cup and the inner support cover is used to ensure that the installation position of the inner support cover 2 relative to the sealing cup 1 is fixed, and then the distance between the lower end of the static contact 3 and the moving contact piece 4 is kept constant, thereby ensuring the contact reliability.

[0033] Embodiment 2

[0034] The difference between the second embodiment and the first embodiment is that the first positioning portion 11 is a limiting protrusion arranged at the top of the inner wall of the sealing cup 1, and the second positioning portion 21 is formed by the top outer edge of the inner support cover 2, so that when the inner support cover 2 is pressed into place in the sealing cup 1, the limiting protrusion on the sealing cup 1 and the top outer edge of the inner support cover 2 are pressed and limited to form an assembly positioning structure.

[0035] As described above, the embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. Therefore, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the protection scope of the utility model.

Claims

1. An assembly structure of a sealing cup and an inner support cover, comprising a sealing cup (1) and an inner support cover (2) interference-embedded in the sealing cup (1), characterized in that: An assembly positioning structure is provided between the sealing cup (1) and the inner support cover (2) for preventing the inner support cover (2) from rebounding relative to the sealing cup (1).

2. The assembly structure of the sealing cup and the inner support cover according to claim 1 is characterized in that: A first positioning portion (11) is provided on the sealing cup (1), and a second positioning portion (21) is provided on the inner support cover (2). When the inner support cover (2) is pressed into place in the sealing cup (1), the first positioning portion (11) and the second positioning portion (21) are configured to cooperate with each other to form an assembly positioning structure for preventing the inner support cover (2) from rebounding relative to the sealing cup (1).

3. The assembly structure of the sealing cup and the inner support cover according to claim 2 is characterized in that: The first positioning portion (11) is a snap-in hole provided on the side wall of the sealing cup (1), and the second positioning portion (21) is a snap-in protrusion provided on the side wall of the inner support cover (2). When the inner support cover (2) is pressed into place in the sealing cup (1), the snap-in protrusion on the side wall of the inner support cover (2) is correspondingly snapped into the snap-in hole on the side wall of the sealing cup (1), and the snap-in protrusion and the snap-in hole cooperate with each other to form a snap-in type assembly positioning structure.

4. The assembly structure of the sealing cup and the inner support cover according to claim 3 is characterized in that: Two left-right symmetrical clamping protrusions are arranged on the side wall of the inner support cover (2), and two clamping holes are opened on the side wall of the sealing cup (1) for respectively engaging with the two clamping protrusions on the inner support cover (2) in a clamping manner.

5. The assembly structure of the sealing cup and the inner support cover according to claim 3 or 4, characterized in that: A convex rib (22) is formed on the inner support cover (2) for performing an interference fit with the inner side wall of the sealing cup (1).

6. The assembly structure of the sealing cup and the inner support cover according to claim 5, characterized in that: The convex rib (22) is configured to be interference-fitted with the inner side wall of the sealing cup (1) at the position where the clamping hole is opened, and the clamping protrusion is formed on the convex rib (22).

7. The assembly structure of the sealing cup and the inner support cover according to claim 2, characterized in that: The first positioning portion (11) is a limiting convex portion arranged at the top of the inner side wall of the sealing cup (1), and the second positioning portion (21) is formed by the top outer edge of the inner support cover (2), so that when the inner support cover (2) is pressed into place in the sealing cup (1), the limiting convex portion on the sealing cup (1) and the top outer edge of the inner support cover (2) are pressed against each other to form an assembly positioning structure.

8. A high voltage DC relay, characterized in that: The invention comprises an assembly structure of a sealing cup and an inner support cover as described in any one of claims 1 to 6.

9. The high voltage DC relay according to claim 8, characterized in that: It also comprises two stationary contacts (3), and the inner support cover (2) is provided with two stationary contact mounting holes (23) for mounting the stationary contacts (3). The two stationary contacts (3) are respectively and adaptively fixedly mounted at the two stationary contact mounting holes (23).

10. The high voltage DC relay according to claim 9, characterized in that: It also includes a moving contact piece (4) driven by the pushing part, the moving contact piece (4) is located inside the cavity of the inner support cover (2), and the lower ends of the two stationary contacts (3) respectively extend from the two stationary contact mounting holes (23) of the inner support cover (2) into the cavity of the inner support cover (2), and respectively correspond to the two contact ends of the moving contact piece (4) up and down, and the moving contact piece (4) is contacted and positioned with the bottom of the sealing cup (1) through the lower end of the pushing part.

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