Novel shielding case

Abstract

The utility model relates to a shielding case, in particular to a novel shielding case which comprises a shielding case body which is arranged in a first cavity, and the side wall forming the first cavity is provided with an annular abutting part. The connecting ring is fixed on the outer side of the shielding case body and abuts against the bottom of the annular abutting part; and at least two elastic sheets, wherein the two elastic sheets are respectively matched with the connecting ring and the annular abutting part. According to the utility model, the advantages of no need of welding, convenient installation and high practicability of the shielding cylinder can be realized by effectively utilizing the structural configuration of the shielding cylinder.

Description

Technical Field

[0001] The present application relates to a shielding cover, and more particularly to a novel shielding cover. Background Art

[0002] Our company usually welded the shielding cover body to the fixed ribs of the porcelain shell before, but the vacuum interrupter will increase its own temperature during operation, that is, a large amount of high-temperature metal vapor will be generated when the moving contact and the static contact are disconnected. And because the expansion coefficients of various materials are different, it is easy to cause the welding between the fixed ribs of the porcelain shell and the shielding cover body to break, which makes it impossible to limit the position of the shielding cover body, and then causes damage. Therefore, it is necessary to improve our vacuum interrupter in response to the above technical problems. Therefore, there is a need to provide a new type of shielding cover that does not require welding, is easy to install, and has high practicality. Summary of the invention

[0003] The main purpose of the present application is to provide a new type of shielding cover, wherein the new type of shielding cover can effectively utilize its own structural configuration to achieve the advantages of the shielding tube not requiring welding and convenient installation.

[0004] Another object of the present application is to provide a new type of shielding cover, wherein the new type of shielding cover includes a shielding cover body, a connecting ring and at least two spring sheets, the shielding cover body is placed in the first cavity, and the side wall forming the first cavity has an annular abutment portion, the connecting ring is fixed to the outside of the shielding cover body and abuts against the bottom of the annular abutment portion, the two spring sheets are respectively matched with the connecting ring and the annular abutment portion, that is, the position of the shielding cover body is limited by squeezing the spring sheets, and the problems caused by conventional welding can be avoided by the deformation of the spring sheets after the shielding cover and the ceramic shell are expanded by heat.

[0005] Another object of the present application is to provide a new shielding cover, wherein the new shielding cover has a simple structure, is easy to operate, does not involve complicated manufacturing processes and expensive materials, has high economy, and is easy to promote and use.

[0006] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a novel shielding cover, wherein the novel shielding cover comprises:

[0007] A shielding cover body, wherein the shielding cover body is placed in the first cavity, and a side wall forming the first cavity has an annular abutment portion;

[0008] a connecting ring, the connecting ring being fixed to the outer side of the shielding cover body and abutting against the bottom of the annular abutting portion; and

[0009] At least two spring sheets, the two spring sheets are respectively matched with the connecting ring and the annular abutting portion.

[0010] In one or more embodiments of the present application, the shielding cover body has a third opening, a second cavity and a fourth opening, the third opening and the fourth opening are both connected to the second cavity, and the third opening and the fourth opening are also connected to the first cavity.

[0011] In one or more embodiments of the present application, the outer wall of the shielding cover body further has an annular protrusion, the annular protrusion is located on the upper side of the annular abutting portion, and the connecting ring also abuts against the annular protrusion.

[0012] In one or more embodiments of the present application, the connecting ring has at least two opposite mounting grooves on one side close to the annular abutment portion, and the annular abutment portion has at least two oppositely arranged arc-shaped positioning grooves on one side close to the connecting ring, the two mounting grooves correspond one-to-one to the two arc-shaped positioning grooves, and one end of the two spring sheets respectively cooperates with the two mounting grooves, and the other end respectively cooperates with the two arc-shaped positioning grooves.

[0013] In one or more embodiments of the present application, each of the spring pieces has an insertion portion, a bending portion and a pressure-bearing portion, one end of the insertion portion is connected to one end of the bending portion, one end of the bending portion is connected to the pressure-bearing portion, and the insertion portion, the bending portion and the pressure-bearing portion are integrally formed.

[0014] In one or more embodiments of the present application, the outer wall of the insertion portion also has a positioning notch, and the side wall forming the installation groove also has a positioning protrusion, wherein when the insertion portion is placed in the installation groove, the positioning protrusion cooperates with the positioning notch, and the bending portion and the pressure portion are also placed in the corresponding arc-shaped positioning groove.

[0015] In one or more embodiments of the present application, the maximum distance between the pressure-bearing portion and the insertion portion is smaller than the width of the arc-shaped positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0017] Figure 1 The figure shows a structural schematic diagram of a new shielding cover.

[0018] Figure 2 The figure shows a schematic diagram of the application of a new type of shielding cover.

[0019] Figure 3 Pictured Figure 2 A is an enlarged view of the middle image.

[0020] Figure 4 The figure shows a partial enlarged diagram of the application schematic of a new type of shielding cover. DETAILED DESCRIPTION

[0021] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0024] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0025] Schematic of the new shielding cover

[0026] refer to Figures 1 to 4 According to a preferred embodiment of the utility model, the structure of the new shielding cover is as follows: Figure 1 As shown, it includes a shielding cover body 20, and the shielding cover body 20 is arranged as shown in FIG. Figure 2The ceramic shell 10 shown in the figure. The ceramic shell 10 has a first opening 101, a first cavity 102 and a second opening 103. The first opening 101 and the second opening 103 are both connected to the first cavity 102, and the first opening 101 and the second opening 103 are also connected to the outside. The side wall forming the first cavity 102 also has an annular abutment portion 11, which is located in the middle section of the ceramic shell, and those skilled in the art should understand that the annular abutment portion 11 is configured to cooperate with the shielding cover body 20, that is, to support the shielding cover body 20. Specifically, the shielding cover body 20 is placed in the first cavity 102, and the shielding cover body 20 has a third opening 201, a second cavity 202 and a fourth opening 203, the third opening 201 and the fourth opening 203 are both connected to the second cavity 202, and the third opening 201 and the fourth opening 203 are also connected to the first cavity 102.

[0027] It should also be noted that the outer wall of the shielding cover body 20 also has an annular protrusion 21, and the annular protrusion 21 is located on the upper side of the annular abutment 11. It should also be noted that our company previously directly welded the annular protrusion 21 close to the annular abutment 11 on one side thereof to the annular abutment 11. Specifically, a layer of metal coating was applied on the annular abutment 11 or the annular protrusion 21, and then the annular protrusion 21 was fixed to the annular abutment 11 by an external vacuum welding furnace. However, due to the different expansion coefficients of various materials, it is easier to cause the welding joint between the fixing rib of the ceramic shell and the shielding cover body 20 to break, thereby making it impossible to limit the position of the shielding cover body 20, and therefore improvement is needed.

[0028] Specifically, the novel shielding cover further comprises a connecting ring 30, wherein the connecting ring 30 is interference fit with the shielding cover body 20, thereby limiting the position of the connecting ring 30, and the top of the connecting ring 30 contacts the side of the annular protrusion 21 close to the annular abutment portion 11, and the bottom of the connecting ring 30 contacts the annular protrusion 21. It is worth mentioning that the connecting ring 30 also has two opposite mounting grooves 301 on the side close to the annular abutment portion 11, and the annular abutment portion 11 has two oppositely arranged arc-shaped positioning grooves 1101 on the side close to the connecting ring 30, and the two mounting grooves 301 correspond to the two arc-shaped positioning grooves 1101 one-to-one, that is, when the shielding cover body 20 is matched with the above-mentioned ceramic shell 10, the user can deflect a predetermined angle so that the two mounting grooves 301 correspond to the two arc-shaped positioning grooves 1101 one-to-one. In addition, in order to limit the position of the shielding cover body 20, spring sheets 40 are provided at the two installation grooves 301, and the two spring sheets 40 are respectively matched with the two annular positioning grooves, that is, the position of the connecting ring 30 is limited by the two spring sheets 40.

[0029] Specifically, each of the spring pieces 40 has an insertion portion 41, a bending portion 42 and a pressure portion 43, one end of the insertion portion 41 is connected to one end of the bending portion 42, one end of the bending portion 42 is connected to the pressure portion 43, and the structure of the spring piece 40 is as follows: Figure 3 As shown, the insertion portion 41, the bending portion 42 and the pressure receiving portion 43 are integrally formed.

[0030] Further, one end of the insertion portion 41 away from the bent portion 42 is matched with the mounting groove 301. Specifically, the insertion portion 41 and the mounting groove 301 may be interference-fitted, thereby limiting the position of the insertion portion 41. In addition, the shape of the mounting groove 301 and the cross-sectional shape of the insertion portion 41 are both circular. In addition, the embodiments of the insertion portion 41 and the mounting groove 301 may also be as follows: Figure 4As shown, the outer wall of the insertion portion 41 also has a positioning notch, and the side wall forming the mounting groove 301 also has a positioning protrusion 3011, wherein when the insertion portion 41 is placed in the mounting groove 301, the positioning protrusion 3011 cooperates with the positioning notch, thereby defining the position of the insertion portion 41. In addition, when the insertion portion 41 cooperates with the mounting groove 301, the bending portion 42 and the pressed portion 43 are also placed in the corresponding arc-shaped positioning groove 1101. Specifically, the maximum distance between the pressure-bearing portion 43 and the insertion portion 41 is smaller than the width of the arc-shaped positioning groove 1101. Therefore, when the bending portion 42 is placed in the arc-shaped positioning groove 1101, the side wall forming the arc-shaped positioning groove 1101 will squeeze the outer side of the pressure-bearing portion 43, so that the pressure-bearing portion 43 bends toward the direction close to the insertion portion 41 until the maximum distance between the pressure-bearing portion 43 and the insertion portion 41 is consistent with the width of the arc-shaped positioning groove 1101, that is, the end of the spring piece 40 placed in the arc-shaped positioning groove 1101 is limited by the bending state of the pressure-bearing portion 43, that is, the outer side of the pressure-bearing portion 43 always applies force to the side wall forming the arc-shaped positioning groove 1101, thereby limiting the position of the spring piece 40. Specifically, the advantage of the present invention is that when the above-mentioned shielding cover body 20 is compressed and expanded, that is, when the annular abutment portion 11 and the annular protrusion 21 are integrally misaligned, since the present invention is limited by at least two spring pieces 40, and the spring piece 40 has a certain deformation amount, therefore when the annular abutment portion 11 and the annular protrusion 21 are integrally misaligned, the spring piece 40 will not be torn, so that the spring piece 40 can still limit the position of the shielding cover body 20.

[0031] In summary, the novel shielding cover based on the embodiment of the present application is explained, which provides the novel shielding cover with advantages such as no need for welding of the shielding tube, convenient installation, and high practicality.

[0032] It is worth mentioning that in the embodiment of the present application, the novel shielding cover has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the novel shielding cover provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0033] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A novel shielding cover, matched with an external ceramic shell, wherein the ceramic shell has a first opening, a first cavity and a second opening, wherein the first opening and the second opening are both connected to the first cavity, characterized in that: The novel shielding cover comprises: A shielding cover body, wherein the shielding cover body is placed in the first cavity, and a side wall forming the first cavity has an annular abutment portion; a connecting ring, the connecting ring being fixed to the outer side of the shielding cover body and abutting against the bottom of the annular abutting portion; and At least two spring sheets, the two spring sheets are respectively matched with the connecting ring and the annular abutting portion.

2. According to the new shielding cover described in claim 1, the shielding cover body has a third opening, a second cavity and a fourth opening, the third opening and the fourth opening are both connected to the second cavity, and the third opening and the fourth opening are also connected to the first cavity.

3. The new shielding cover according to claim 1, wherein the outer wall of the shielding cover body also has an annular protrusion, the annular protrusion is located on the upper side of the annular abutting portion, and the connecting ring also abuts on the annular protrusion.

4. According to the new shielding cover described in claim 3, the side of the connecting ring close to the annular abutment portion also has at least two opposite mounting grooves, and the side of the annular abutment portion close to the connecting ring has at least two oppositely arranged arc-shaped positioning grooves, the two mounting grooves correspond to the two arc-shaped positioning grooves one by one, and one end of the two spring sheets respectively cooperates with the two mounting grooves, and the other end respectively cooperates with the two arc-shaped positioning grooves.

5. According to the new shielding cover described in claim 4, each of the spring pieces has an insertion portion, a bending portion and a pressure-bearing portion, one end of the insertion portion is connected to one end of the bending portion, one end of the bending portion is connected to the pressure-bearing portion, and the insertion portion, the bending portion and the pressure-bearing portion are integrally formed.

6. According to the new shielding cover described in claim 5, the outer wall of the insertion part also has a positioning notch, and the side wall forming the installation groove also has a positioning protrusion, wherein when the insertion part is placed in the installation groove, the positioning protrusion cooperates with the positioning notch, and the bending part and the pressure-bearing part are also placed in the corresponding arc-shaped positioning groove.

7. The new shielding cover according to claim 5, wherein the maximum distance between the pressed portion and the inserted portion is smaller than the width of the arc-shaped positioning groove.

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