Multi-step shielding cylinder

Abstract

The utility model relates to the field of vacuum arc extinguish chambers, in particular to a multi-step shielding cylinder which comprises a cylinder body, the cylinder body is provided with a first opening, a first cavity and a second opening, the first opening and the second opening are both communicated with the first cavity, and the first opening and the second opening are both communicated with the first cavity. The cylinder body is provided with an extending part, a first abutting part, a second abutting part and a connecting part, one end of the extending part is connected with the first abutting part, the end, away from the extending part, of the first abutting part is connected with the second abutting part, and the end, away from the first abutting part, of the second abutting part is connected with the connecting part; the first opening is located at one end of the extension portion away from the first abutting portion, and the second opening is located at one end of the connection portion away from the second abutting portion. According to the utility model, the advantages of convenient use, convenient limiting of the shielding cylinder and good multi-step performance can be realized by effectively utilizing the structural configuration of the shielding cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vacuum interrupter, more particularly to a multi-step shielding cylinder. BACKGROUND

[0002] The inner annular boss of the existing porcelain shell is used to limit the position of the shielding cylinder, and when the size of the annular boss changes, the matching structure of the shielding cylinder needs to be changed accordingly. Generally, shielding cylinders of different cross-sectional sizes are used to match annular bosses of different sizes, but this method requires the processing of different size shielding cylinders, which is more troublesome. The multi-step design of the present application enables the shielding cylinder to meet at least two sizes of annular bosses, thereby reducing the number of processing times for different size shielding cylinders to provide processing efficiency. Therefore, there is a need for a multi-step shielding cylinder that is easy to use and convenient to limit the position of the shielding cylinder. SUMMARY

[0003] The main purpose of the present application is to provide a multi-step shielding cylinder, which can effectively utilize its own structural configuration to achieve the advantages of convenient shielding cylinder positioning and multi-step.

[0004] Another purpose of the present application is to provide a multi-step shielding cylinder, which includes a cylinder body, the cylinder body has a first opening, a first cavity and a second opening, the first opening and the second opening are in communication with the first cavity, and the first opening and the second opening are in communication with the first cavity, and the first opening and the second opening are also in communication with the outside, the cylinder body has an extension, a first abutting portion, a second abutting portion and a connecting portion, one end of the extension is connected with the first abutting portion, the end of the first abutting portion away from the extension is connected with the second abutting portion, the end of the second abutting portion away from the first abutting portion is connected with the connecting portion, and the first opening is located at the end of the extension away from the first abutting portion, and the second opening is located at the end of the connecting portion away from the second abutting portion, wherein the multi-step structure design enables the shielding cylinder to meet the matching requirements of at least two sizes, and the connecting portion can be matched with at least one connecting sleeve, and the structure design of the connecting sleeve and the first abutting portion or the second abutting portion enables the cylinder body to be directly clamped on the annular protruding portion of the outer wall porcelain shell, thereby limiting the position of the cylinder body.

[0005] Another purpose of the present application is to provide a multi-step shielding cylinder, which is simple in structure and easy to operate, does not involve complex manufacturing processes and expensive materials, has high economic efficiency, and is easy to popularize and use.

[0006] To achieve the above at least one purpose of the application, the application provides a multi-step shielding cylinder, wherein the multi-step shielding cylinder comprises:

[0007] a cylinder body, the cylinder body having a first opening, a first cavity and a second opening, the first opening and the second opening both communicating with the first cavity, and the first opening and the second opening both communicating with the outside, the cylinder body having an extension, a first abutting portion, a second abutting portion and a connecting portion, one end of the extension being connected with the first abutting portion, the first abutting portion away from one end of the extension being connected with the second abutting portion, one end of the second abutting portion away from the first abutting portion being connected with the connecting portion, and the first opening being located at one end of the extension away from the first abutting portion, and the second opening being located at one end of the connecting portion away from the second abutting portion.

[0008] In one or more embodiments of the application, the cross-sectional dimension of the first abutting portion is greater than the cross-sectional dimension of the extension, the cross-sectional dimension of the extension being consistent with the cross-sectional dimension of the first abutting portion, and the cross-sectional dimension of the connecting portion being smaller than the cross-sectional dimension of the second abutting portion.

[0009] In one or more embodiments of the application, the outer wall of the connecting portion further has an external thread, and the multi-step shielding cylinder further comprises a connecting sleeve, the connecting sleeve being threadedly connected with the external thread.

[0010] In one or more embodiments of the application, the inner wall of the connecting portion further has an internal thread, and the multi-step shielding cylinder further comprises a connecting sleeve, the connecting sleeve being threadedly connected with the internal thread.

[0011] In one or more embodiments of the application, the connecting sleeve has a third cavity, both ends of the third cavity communicating with the outside, and the cross-sectional dimension of the connecting sleeve being consistent with the cross-sectional dimension of the second abutting portion.

[0012] In one or more embodiments of the application, the wall surface forming the third cavity further has at least two positioning notches, both the positioning notches communicating with the third cavity.

[0013] In one or more embodiments of the application, each of the positioning notches further has a bending portion, one end of the bending portion being connected with the wall surface forming the positioning notch, and the other end extending in a direction away from the third cavity. BRIEF DESCRIPTION OF DRAWINGS

[0014] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0015] Figure 1 The figure shows a schematic diagram of a multi-step shielding cylinder.

[0016] Figure 2 Figure 1 A magnified view of A in the middle.

[0017] Figure 3 The illustration shows another embodiment of a multi-step shielding cylinder. Detailed Implementation

[0018] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used 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 similarly, 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 of the associated listed items.

[0021] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as 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.

[0022] refer to Figures 1 to 3 According to a preferred embodiment of the present invention, a multi-step shielding cylinder is provided, wherein the structure of the multi-step shielding cylinder is as follows: Figure 1As shown, it includes a cylindrical body 10, which has a first opening 101, a first cavity 102, and a second opening 103. Both the first opening 101 and the second opening 103 are connected to the first cavity 102, and both are also connected to the outside. Those skilled in the art should understand that the cylindrical body 10 is disposed in such a manner... Figure 1 The ceramic shell 100 shown has a second cavity 200 with two connected ends. The wall surface forming the second cavity 200 has an annular protrusion 1001. The annular protrusion 1001 is configured to cooperate with the cylindrical body 10 to define the position of the cylindrical body 10.

[0023] It should be noted that the cylindrical body 10 has an extension 11, a first abutment 12, a second abutment 13, and a connecting portion 14. One end of the extension 11 is connected to the first abutment 12, the end of the first abutment 12 opposite to the extension 11 is connected to the second abutment 13, and the end of the second abutment 13 opposite to the first abutment 12 is connected to the connecting portion 14. It is worth mentioning that the cross-sectional dimension of the first abutment 12 is larger than that of the extension 11, the cross-sectional dimension of the extension 11 is the same as that of the first abutment 12, and the cross-sectional dimension of the connecting portion 14 is smaller than that of the second abutment 13. It should be noted that, since the dimensions of the first abutment 12 and the second abutment 13 are different, the user can choose to match the first abutment 12 or the second abutment 13 according to the extension length of the annular protrusion 1001 of different specifications. That is, if the extension length of the annular protrusion 1001 is longer, the second abutment 13 is used to match the annular protrusion 1001; otherwise, the first abutment 12 can be used. In addition, the first opening 101 is located at the end of the extension 11 opposite to the first abutment 12, and the second opening 103 is located at the end of the connecting portion 14 opposite to the second abutment 13.

[0024] Among them, such as Figure 2 In the illustrated embodiment, the first abutting portion 12 is an annular tip, which is composed of an inclined surface and a straight surface, with the straight surface directly abutting against the upper side of the annular protrusion 1001. Simultaneously, the second abutting portion 13 is spaced a predetermined distance from the inner side of the annular protrusion 1001. It should be noted that the structural design of the first abutting portion 12 effectively reduces the cross-sectional dimensions of the extension portion 11, thereby reducing the manufacturing cost of the cylinder body 10, and the annular tip can be formed by extrusion using an external extrusion device.

[0025] It is worth mentioning that the outer wall of the connecting part 14 also has an external thread, and the multi-step shielding cylinder also includes a connecting sleeve 20, which can be threadedly connected to the external thread. Specifically, the connecting sleeve 20 has a third cavity 201, both ends of which are connected to the outside. When the connecting sleeve 20 is engaged with the connecting part 14, the third cavity 201 is connected to the first cavity 102, and the cross-sectional dimensions of the connecting sleeve 20 are the same as the cross-sectional dimensions of the second abutment part 13. It should also be noted that when the second abutment part 13 is engaged with the annular protrusion 1001, a smaller connecting sleeve 20 can be used, specifically as follows... Figure 3 As shown, the wall surface forming the first cavity 102 and near the second opening 103 has an internal thread, and the outer wall of the connecting sleeve 20 is threadedly connected to the internal thread.

[0026] It is worth mentioning that the wall surface forming the third cavity 201 also has at least two positioning notches 202, both of which are connected to the third cavity 201. Furthermore, each positioning notch 202 contains a curved portion 21, one end of which is connected to the wall surface forming the positioning notch 202, and the other end extends away from the third cavity 201; that is, the curved portion 21 is inclined. Specifically, as shown... Figure 2 As shown, when the first abutting part 12 contacts the annular protrusion 1001, at least two of the curved parts 21 are facing the bottom of the annular protrusion 1001. At this time, the curved parts 21 are squeezed by an external tool so that the two curved parts 21 deform in opposite directions to abut against the bottom of the annular protrusion 1001, thereby defining the position of the cylinder body 10.

[0027] In summary, the multi-step shielding cylinder described in the embodiments of this application is explained, which provides advantages such as ease of use, convenient shielding cylinder positioning, and multiple steps.

[0028] It is worth mentioning that, in this embodiment, the multi-step shielding cylinder has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the multi-step shielding cylinder provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0029] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. A multi-step shielding cylinder, characterized in that, The multi-step shielding cylinder includes: A cylindrical body has a first opening, a first cavity, and a second opening. Both the first opening and the second opening are connected to the first cavity and are also connected to the outside. The cylindrical body has an extension, a first abutment, a second abutment, and a connecting portion. One end of the extension is connected to the first abutment. One end of the first abutment away from the extension is connected to the second abutment. One end of the second abutment away from the first abutment is connected to the connecting portion. The first opening is located at the end of the extension away from the first abutment, and the second opening is located at the end of the connecting portion away from the second abutment.

2. The multi-step shielding cylinder according to claim 1, wherein the cross-sectional dimension of the first abutment portion is larger than the cross-sectional dimension of the extension portion, the cross-sectional dimension of the extension portion is consistent with the cross-sectional dimension of the first abutment portion, and the cross-sectional dimension of the connecting portion is smaller than the cross-sectional dimension of the second abutment portion.

3. The multi-step shielding cylinder according to claim 2, wherein the outer wall of the connecting part further has an external thread, and the multi-step shielding cylinder further includes a connecting sleeve, wherein the connecting sleeve is threadedly connected to the external thread.

4. The multi-step shielding cylinder according to claim 2, wherein the inner wall of the connecting part further has an internal thread, and the multi-step shielding cylinder further includes a connecting sleeve, wherein the connecting sleeve is threadedly connected to the internal thread.

5. The multi-step shielding cylinder according to claim 3 or 4, wherein the connecting sleeve has a third cavity, both ends of the third cavity are connected to the outside, and the cross-sectional dimensions of the connecting sleeve are consistent with the cross-sectional dimensions of the second abutment portion.

6. The multi-step shielding cylinder according to claim 5, wherein the wall surface forming the third cavity further has at least two positioning notches, both of which are connected to the third cavity.

7. The multi-step shielding cylinder according to claim 6, wherein each of the positioning notches is further provided with a curved portion, one end of the curved portion being connected to the wall surface forming the positioning notch, and the other end extending in a direction away from the third cavity.

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