Alumina ceramic housing for relay

Abstract

The utility model discloses an alumina ceramic housing for a relay, which comprises a ceramic outer shell, a ceramic inner shell is arranged in the ceramic outer shell, a central shell is arranged between the ceramic outer shell and the ceramic inner shell, and an alumina core is embedded and fixedly connected in the middle of the ceramic outer shell, the central shell and the ceramic inner shell. A first positioning frame is fixedly connected to the periphery, close to the bottom, of the outer side wall of the ceramic outer shell, a second positioning frame is fixedly connected to the periphery of the outer side wall of the center shell, a third positioning frame is fixedly connected to the periphery of the outer side wall of the ceramic inner shell, and positioning holes are formed in the first positioning frame, the second positioning frame and the third positioning frame. According to the utility model, the ceramic outer shell, the ceramic inner shell and the central shell are matched with each other, and the plurality of groups of ceramic cover shells arranged in a nested manner are adopted, so that the relay assembly box can be disassembled and assembled for use, has various combination modes, is convenient to adapt to the assembly of relays with various sizes, and is convenient to flexibly store and carry due to sequential attachment and flush bottom surfaces after assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of relay ceramic covers, and particularly relates to an alumina ceramic cover for a relay. Background Art

[0002] A relay ceramic cover is a sealing and protecting device for high-voltage DC relays. It is mainly made of ceramic materials and aims to provide a sealed environment to protect the internal mechanical structure and electronic components of the relay from the external environment. This cover not only protects the relay but also helps to improve the performance and reliability of the relay through its special materials and design.

[0003] At present, for the existing ceramic cover for a relay, due to the fixed size of the ceramic cover, its heat resistance, thermal shock resistance, and strength are all fixed. When it is necessary to improve the strength of the relay or higher requirements are needed, a new ceramic cover needs to be customized, which wastes time. At the same time, the original ceramic cover is discarded, wasting resources, and there are many inconveniences in use.

[0004] Therefore, we propose to design an alumina ceramic cover for a relay. Content of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and the title of the specification of this application, to avoid obscuring the purpose of this part, the abstract, and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solutions:

[0007] An alumina ceramic cover for a relay includes a ceramic outer shell. A ceramic inner shell is arranged inside the ceramic outer shell. A central shell is arranged between the ceramic outer shell and the ceramic inner shell. An alumina core is fixedly connected by embedding in the middle of the ceramic outer shell, the central shell, and the ceramic inner shell. A first positioning frame is fixedly connected to the periphery of the outer side wall of the ceramic outer shell near the bottom. A second positioning frame is fixedly connected to the periphery of the outer side wall of the central shell. A third positioning frame is fixedly connected to the periphery of the outer side wall of the ceramic inner shell. Positioning holes are opened inside the first positioning frame, the second positioning frame, and the third positioning frame. Mounting holes are opened at the tops of the ceramic outer shell, the central shell, and the ceramic inner shell.

[0008] As a preferred embodiment of the alumina ceramic housing for a relay of the present utility model, the ceramic outer shell, the central housing, and the ceramic inner shell are sequentially nested. The inner wall of the ceramic outer shell is smoothly attached to the outer wall of the central housing, and the inner wall of the central housing is smoothly attached to the outer wall of the ceramic inner shell. The three nested ceramic shells facilitate the assembly and storage of the ceramic outer shell, the central housing, and the ceramic inner shell.

[0009] As a preferred embodiment of the alumina ceramic housing for a relay of the present utility model, the thickness of the alumina core is one-fourth of the thickness of the corresponding outer shell. Embedding the alumina core inside is more stable and less likely to fall off compared to directly attaching an alumina sheet to the inner wall of the ceramic housing. At the same time, after embedding the alumina core, it supports the inside and outside of the ceramic, facilitating the improvement of the structural strength of the ceramic, and the insulation performance is also enhanced.

[0010] As a preferred embodiment of the alumina ceramic housing for a relay of the present utility model, first card slots corresponding to the second positioning frame are provided around the inner wall of the first positioning frame. The first card slots fit corresponding to the second positioning frame, and the depth of the first card slots is the same as the thickness of the second positioning frame. Second card slots corresponding to the third positioning frame are provided at the bottom of the second positioning frame. The second card slots fit corresponding to the third positioning frame, and the depth of the second card slots is the same as the thickness of the third positioning frame. After nesting, the bottom surfaces of the first positioning frame, the second positioning frame, and the third positioning frame are all in the same plane. When used in combination, it facilitates the installation of the ceramic outer shell.

[0011] As a preferred embodiment of the alumina ceramic housing for a relay of the present utility model, four positioning holes are provided, and the four positioning holes are evenly distributed at the four corners of the corresponding positioning frame. Through the positioning holes provided at the four corners, it is convenient to install and fix the relay components to the ceramic housing.

[0012] As a preferred embodiment of the alumina ceramic housing for a relay of the present utility model, the centers of the three mounting holes correspond and are on the same vertical line. When nested and used, if the size of the relay component is small, it can directly penetrate through the smallest mounting hole and then through the mounting hole with the largest aperture, facilitating connection with related components.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] Through the mutual cooperation among the ceramic outer shell, the ceramic inner shell, and the central housing of the present utility model, multiple groups of nested ceramic housings can be disassembled and assembled, with diverse combination methods, facilitating the adaptation to the assembly of relays of various sizes. At the same time, after assembly, they are sequentially attached and the bottom surfaces are flush, facilitating flexible storage and carrying. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will describe the present utility model in detail in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0016] Figure 1 is a perspective view of an alumina ceramic housing for a relay of the present utility model;

[0017] Figure 2 is a schematic structural diagram of an alumina core of an alumina ceramic housing for a relay of the present utility model;

[0018] Figure 3 is a schematic structural diagram of a nested structure of an alumina ceramic housing for a relay of the present utility model.

[0019] Legend description: 1. Ceramic outer shell; 2. Ceramic inner shell; 3. Central housing; 4. Alumina core; 5. First positioning frame; 501. First card slot; 6. Second positioning frame; 601. Second card slot; 7. Third positioning frame; 8. Positioning hole; 9. Mounting hole. Specific embodiments

[0020] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail in conjunction with the drawings.

[0021] Secondly, the present utility model will be described in detail in conjunction with the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0022] To make the purpose, technical solutions, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail in conjunction with the drawings.

[0023] Please refer to Figures 1-3 , the present utility model provides an alumina ceramic housing for a relay, including a ceramic outer shell 1. A ceramic inner shell 2 is arranged inside the ceramic outer shell 1. A central housing 3 is arranged between the ceramic outer shell 1 and the ceramic inner shell 2. The ceramic outer shell 1, the central housing 3, and the ceramic inner shell 2 are sequentially arranged in a nested manner. The inner wall of the ceramic outer shell 1 is smoothly attached to the outer wall of the central housing 3, and the inner wall of the central housing 3 is smoothly attached to the outer wall of the ceramic inner shell 2. The three nested ceramic shells facilitate the assembly and storage of the ceramic outer shell 1, the central housing 3, and the ceramic inner shell 2.

[0024] An alumina core 4 is embedded and fixedly connected in the middle of the ceramic outer shell 1, the central housing 3 and the ceramic inner shell 2. The thickness of the alumina core 4 is one-fourth of the thickness of the corresponding outer shell. Embedding the alumina core 4 inside is more stable and not easy to fall off compared to directly attaching an alumina sheet to the inner wall of the ceramic cover. At the same time, after embedding the alumina core 4, it supports the inside and outside of the ceramic, facilitating the improvement of the structural strength of the ceramic, and the insulation performance is also enhanced.

[0025] Four first positioning frames 5 are fixedly connected to the periphery of the outer side wall of the ceramic outer shell 1 near the bottom. Four second positioning frames 6 are fixedly connected to the periphery of the outer side wall of the central housing 3. Four third positioning frames 7 are fixedly connected to the periphery of the outer side wall of the ceramic inner shell 2.

[0026] Among them, first card slots 501 corresponding to the second positioning frames 6 are opened on the periphery of the inner wall of each of the first positioning frames 5. The first card slots 501 are correspondingly fitted with the second positioning frames 6. The depth of the first card slots 501 is the same as the thickness of the second positioning frames 6. Second card slots 601 corresponding to the third positioning frames 7 are opened at the bottom of the second positioning frames 6. The second card slots 601 are correspondingly fitted with the third positioning frames 7. The depth of the second card slots 601 is the same as the thickness of the third positioning frames 7. After nesting, the bottom surfaces of the first positioning frames 5, the second positioning frames 6 and the third positioning frames 7 are all in the same plane. When used in combination, it is convenient to install the ceramic outer shell 1.

[0027] Positioning holes 8 are opened inside the first positioning frames 5, the second positioning frames 6 and the third positioning frames 7. In this embodiment, there are four positioning holes 8, and the four positioning holes 8 are evenly distributed at the four corners of the corresponding positioning frames. Through the positioning holes 8 provided at the four corners, it is convenient to install and fix the relay element to the ceramic cover.

[0028] Mounting holes 9 are opened at the tops of the ceramic outer shell 1, the central housing 3 and the ceramic inner shell 2. The centers of the three mounting holes 9 correspond to each other and are on the same vertical line. When nested and used, if the size of the relay element is small, it can directly pass through the smallest mounting hole 9 and then pass through from the mounting hole 9 with the largest hole diameter, which is convenient for connection with related components.

[0029] When in use, this device can be assembled and used, and can also be disassembled to adapt to the installation of various models of relays.

[0030] When assembled and used, the ceramic outer shell 1 and the central housing 3 can be assembled, the central housing 3 and the ceramic inner shell 2 can be assembled, and the ceramic outer shell 1, the central housing 3 and the ceramic inner shell 2 can be assembled to form a nested thick ceramic cover. After assembly, due to the increased thickness of the ceramic cover, it helps to improve the insulation performance and voltage withstand capacity of the relay.

[0031] When assembling and connecting, the positioning frame in the outer shell is used to connect with the base. For example, when the ceramic outer shell 1 and the central shell 3 are assembled, bolts are inserted through the positioning holes 8 on the periphery of the first positioning frame 5 for installation and fixation.

[0032] When disassembled and used, the ceramic outer shell 1, the central shell 3 and the ceramic inner shell 2 can be used separately, each installed with a relay, and can be independently assembled into the whole relay.

[0033] When storing, when the ceramic outer shell 1, the central shell 3 and the ceramic inner shell 2 in the device are assembled, they are nested in sequence, and the bottom surfaces of the first positioning frame 5, the second positioning frame 6 and the third positioning frame 7 are flush, which is convenient for storage.

[0034] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An alumina ceramic housing for a relay, comprising a ceramic outer shell (1), characterized in that, Inside the ceramic housing (1), there is a ceramic inner housing (2). Between the ceramic housing (1) and the ceramic inner housing (2), there is a central housing (3). In the middle of the ceramic housing (1), the central housing (3) and the ceramic inner housing (2), an alumina core (4) is embedded and fixedly connected. Around the outer wall of the ceramic housing (1) near the bottom, a first positioning frame (5) is fixedly connected. Around the outer wall of the central housing (3), a second positioning frame (6) is fixedly connected. Around the outer wall of the ceramic inner housing (2), a third positioning frame (7) is fixedly connected. Positioning holes (8) are formed inside the first positioning frame (5), the second positioning frame (6) and the third positioning frame (7). Installation holes (9) are formed at the tops of the ceramic housing (1), the central housing (3) and the ceramic inner housing (2).

2. The alumina ceramic housing for a relay according to claim 1, wherein The ceramic housing (1), the central housing (3) and the ceramic inner housing (2) are nested in sequence. The inner wall of the ceramic housing (1) is smoothly attached to the outer wall of the central housing (3), and the inner wall of the central housing (3) is smoothly attached to the outer wall of the ceramic inner housing (2).

3. The alumina ceramic housing for a relay according to claim 1, characterized in that, The thickness of the alumina core (4) is one-fourth of the thickness of the corresponding outer housing.

4. The alumina ceramic housing for a relay according to claim 1, wherein Around the inner wall of the first positioning frame (5), first clamping grooves (501) corresponding to the second positioning frame (6) are formed. The first clamping grooves (501) are correspondingly fitted with the second positioning frame (6). The depth of the first clamping grooves (501) is the same as the thickness of the second positioning frame (6). At the bottom of the second positioning frame (6), second clamping grooves (601) corresponding to the third positioning frame (7) are formed. The second clamping grooves (601) are correspondingly fitted with the third positioning frame (7). The depth of the second clamping grooves (601) is the same as the thickness of the third positioning frame (7).

5. The alumina ceramic housing for a relay according to claim 1, characterized in that, There are four positioning holes (8), and the four positioning holes (8) are evenly distributed at the four corners of the corresponding positioning frame.

6. The alumina ceramic housing for a relay according to claim 1, characterized in that, The centers of the three installation holes (9) correspond to each other and are on the same vertical line.

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