Contact seat for vacuum arc-extinguishing chamber

Abstract

The utility model relates to the field of vacuum arc extinguish chambers, in particular to a contact seat for a vacuum arc extinguish chamber, which comprises a contact seat body matched with the end part of an external static conducting rod, and one side, close to the external static conducting rod, of the contact seat body is also provided with an assembly groove; one end of the guide rod is movably connected with the end part of an external static conducting rod in a matched manner, and the other end of the guide rod penetrates through the assembly groove and is matched with the contact seat body; and the elastic piece is arranged in the assembling groove. According to the utility model, the advantages of long service life, capability of ensuring the contact between the static contact and the moving contact, and convenient installation can be realized by effectively utilizing the self structural configuration.

Description

Technical Field

[0001] The present application relates to the field of vacuum interrupter chambers, and more specifically to a contact holder for a vacuum interrupter chamber. Background Art

[0002] like Figure 2 As shown, the external vacuum arc extinguishing chamber includes a static conductive rod 20, a dynamic conductive rod 30, a dynamic contact seat 40, a static contact seat 10 and a bellows, wherein the static conductive rod 20 cooperates with the static contact seat 10, the dynamic conductive rod 30 cooperates with the dynamic contact seat 40, and the bellows cooperates with the dynamic conductive rod 30, wherein the bellows is configured to ensure that the dynamic conductive rod 30 moves within a certain range, so each time the dynamic and static contact seats 10 are opened and closed, the corrugated thin wall of the bellows will produce a large mechanical deformation, so when the existing vacuum fire extinguishing chamber is used for a long time, the bellows will produce permanent deformation, so that the dynamic contact seat 40 cannot effectively fit the static contact seat 10, and then the product cannot be used.

[0003] Therefore, there is a need to provide a contact seat for a vacuum interrupter that has a long service life, can ensure contact between a static contact and a moving contact, and is easy to install. Utility Model Content

[0004] The main purpose of the present application is to provide a contact seat for a vacuum arc chamber, wherein the contact seat for the vacuum arc chamber can effectively utilize its own structural configuration to achieve a long service life and ensure the advantages of contact between the static contact and the moving contact.

[0005] Another object of the present application is to provide a contact seat for a vacuum arc extinguishing chamber, wherein the contact seat for the vacuum arc extinguishing chamber includes a contact seat body, a guide rod and an elastic member, the contact seat body cooperates with the end of the external static conductive rod, and the side of the contact seat body close to the external static conductive rod also has an assembly groove, one end of the guide rod is movably connected with the end of the external static conductive rod, and the other end passes through the assembly groove and cooperates with the contact seat body, the elastic member is placed in the assembly groove, wherein the elastic member is configured to apply a force to the guide rod, so that the guide rod moves in a direction close to the external moving contact, thereby driving the contact seat body to move in a direction close to the external moving contact, if the external moving contact cannot move to the predetermined position, the elastic member can ensure that the contact seat body is in contact with the external moving contact.

[0006] Another object of the present application is to provide a contact holder for a vacuum arc chamber, wherein the contact holder for the vacuum arc chamber has a simple structure and is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economy, and is easy to promote and use.

[0007] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a contact holder for a vacuum interrupter, wherein the contact holder for a vacuum interrupter comprises:

[0008] A contact seat body, the contact seat body is matched with the end of the external static conductive rod, and the contact seat body has a mounting groove on one side close to the external static conductive rod;

[0009] a guide rod, one end of which is movably connected with the end of the external static conductive rod, and the other end of which passes through the assembly slot and is matched with the contact seat body; and

[0010] An elastic member is placed in the assembly groove.

[0011] In one or more embodiments of the present application, a welding groove is provided on the side of the contact seat body facing away from the external static conductive rod, and a copper-chromium alloy sheet is also arranged on the welding groove, and the thickness of the copper-chromium alloy sheet is 3 mm.

[0012] In one or more embodiments of the present application, the bottom wall forming the welding groove also has a first insertion hole, and the side of the contact seat facing away from the welding groove has an assembly groove, and the first insertion hole is connected to the assembly groove, and the end of the guide rod passing through the assembly groove also passes through the first insertion hole and is welded to the bottom of the copper-chromium alloy sheet.

[0013] In one or more embodiments of the present application, the outer wall of the guide rod also has an annular limit end, which is integrally formed with the guide rod, and the annular limit end is placed in the assembly groove, and the side of the annular limit end close to the welding groove is against the bottom wall forming the assembly groove.

[0014] In one or more embodiments of the present application, the elastic member is sleeved on the guide rod, and one end of the elastic member contacts the end of the external static conductive rod, and the other end abuts against the annular limiting end.

[0015] In one or more embodiments of the present application, the end of the external static conductive rod also has a second insertion hole, and the bottom wall forming the second insertion hole also has a guide hole, the size of the guide hole is smaller than the size of the second insertion hole, and the other end of the guide rod passes through the second insertion hole and is movably connected to the guide hole.

[0016] In one or more embodiments of the present application, the side wall forming the second insertion hole further has a limiting groove, and the outer wall of the guide rod further has an installation groove, and the installation groove is directly opposite to the limiting groove.

[0017] In one or more embodiments of the present application, the contact seat for the vacuum arc extinguishing chamber also includes a limit member, which is installed in the mounting groove, and the side of the limit member facing away from the mounting groove is also arranged in the limit groove, and the size of the limit groove is larger than the size of the mounting groove.

[0018] In one or more embodiments of the present application, the limiting member is a retaining spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 The figure shows a structural schematic diagram of a contact seat used in a vacuum interrupter.

[0021] Figure 2 The figure shows a partial structural schematic diagram of the vacuum interrupter.

[0022] Figure 3 Picture shows Figure 1 A is an enlarged view of the middle image. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Schematic diagram of contact holder for vacuum interrupter

[0028] refer to Figures 1 to 3 According to a preferred embodiment of the utility model, a contact seat for a vacuum arc extinguishing chamber is provided. It should be noted that the contact seat for the vacuum arc extinguishing chamber includes a contact seat body 10. In addition, the contact seat body 10 is a static contact seat 10, that is, those skilled in the art should understand that the contact seat body 10 is connected to the static conductive rod 20 of the external vacuum fire extinguishing chamber. Those skilled in the art should understand that the external vacuum arc extinguishing chamber includes a static conductive rod 20, a dynamic conductive rod 30, a dynamic contact seat 40, a static contact seat 10 and a bellows, wherein the static conductive rod 20 cooperates with the static contact seat 10, the dynamic conductive rod 30 cooperates with the dynamic contact seat 40, and the bellows cooperates with the dynamic conductive rod 30, wherein the bellows is configured to ensure that the dynamic conductive rod 30 moves within a certain range, so each time the dynamic and static contact seats 10 are opened and closed, the corrugated thin wall of the bellows will undergo a large mechanical deformation, so when the existing vacuum fire extinguishing chamber is used for a long time, its bellows will produce permanent deformation, thereby causing the dynamic contact seat 40 to be unable to effectively fit the static contact seat 10, thereby causing the product to be unusable, wherein the initial positions of the dynamic contact seat 40 and the static contact seat 10 are as shown in FIG. Figure 2 As shown, it should be noted that the utility model is configured to enable the static contact to move a predetermined distance toward the moving contact seat 40, thereby increasing the service life of the product, that is, when the moving contact seat 40 cannot reach the predetermined position, the static contact seat 10 of the utility model can be attached to the active contact seat 40, so that the product can continue to be used. The utility model is described in detail below to facilitate understanding of the utility model.

[0029] Specific as Figure 1As shown, the contact seat body 10 has a welding groove 101 on the side away from the static conductive rod 20, and a copper-chromium alloy sheet 50 is also arranged on the welding groove 101, and the thickness of the copper-chromium alloy sheet 50 is 3 mm. It should also be noted that the copper-chromium alloy sheet 50 is welded to the bottom wall forming the welding groove 101, and the copper-chromium alloy sheet 50 and the welding groove 101 are welded in a manner that solder is applied on the bottom wall forming the welding groove 101, and then the copper-chromium alloy sheet 50 is placed on the solder, and then the solder is dried by an external dryer, so as to preliminarily fix the copper-chromium alloy sheet 50, and finally the welding is performed by a vacuum brazing furnace.

[0030] It should also be noted that the bottom wall forming the welding groove 101 also has a first insertion hole 102, and the side of the contact base away from the welding groove 101 has a mounting groove 103, and the first insertion hole 102 is connected to the mounting groove 103. It should also be noted that the side of the contact base body 10 provided with the mounting groove 103 is configured to cooperate with the end of the external static conductive rod 20, and the mounting groove 103 is configured to reduce the contact area between the contact base body 10 and the end of the external static conductive rod 20. Therefore, due to the problem of machining accuracy, the center position of the contact surface between the contact base body 10 and the external static conductive rod 20 may be uneven, and reducing the contact area between the contact base body 10 and the end of the external static conductive rod 20 can effectively avoid the above problem.

[0031] Furthermore, the contact for the vacuum interrupter also includes a guide rod 60, one end of which passes through the assembly groove 103 and the first insertion hole 102 in sequence, and is welded to the bottom of the copper-chromium alloy sheet 50, wherein the welding method of the guide rod 60 and the copper-chromium alloy sheet 50 is consistent with the welding method of the copper-chromium alloy sheet 50 and the welding groove 101, that is, welding is performed by applying solder, thereby limiting the position of the guide rod 60. It should also be noted that the outer wall of the guide rod 60 also has an annular limiting end 61, the annular limiting end 61 is integrally formed with the guide rod 60, and the annular limiting end 61 is placed in the assembly groove 103, and the side of the annular limiting end 61 close to the welding groove 101 abuts against the bottom wall forming the assembly groove 103.

[0032] It should be noted that the contact for the vacuum interrupter also includes an elastic member 70, which is sleeved on the guide rod 60 and is also placed in the assembly groove 103. In addition, one end of the elastic member 70 contacts the end of the external static conductive rod 20, and the other end abuts against the annular limit end 61. It is worth mentioning that the elastic member 70 is configured to apply a force to the annular limit end 61, so that the contact seat body 10 moves a predetermined distance away from the static conductive rod 20.

[0033] It is worth mentioning that the end of the external static conductive rod 20 also has a second insertion hole 201, and the bottom wall forming the second insertion hole 201 also has a guide hole 202, the size of the guide hole 202 is smaller than the size of the second insertion hole 201, and the other end of the guide rod 60 passes through the second insertion hole 201 and is movably connected to the guide hole 202. It is worth mentioning that the guide hole 202 is configured to limit the moving direction of the guide rod 60, that is, when the elastic member 70 applies a force to the annular limit end 61 of the guide rod 60, the end of the guide rod 60 placed in the guide hole 202 moves upward by a predetermined distance, and at the same time, the contact seat body 10 moves upward by a predetermined distance synchronously, so that the contact seat body 10 can contact the external moving contact.

[0034] It should also be noted that the side wall forming the second insertion hole 201 also has a limiting groove 203 , and the outer wall of the guide rod 60 also has a mounting groove 601 , and the mounting groove 601 is directly opposite to the limiting groove 203 .

[0035] Specifically, the contact holder for the vacuum interrupter further includes a stopper 80, which is installed in the mounting groove 601, and the side of the stopper 80 that is away from the mounting groove 601 is also arranged in the stopper groove 203. It is worth mentioning that the size of the stopper groove 203 is larger than the size of the mounting groove 601. That is, when the guide rod 60 moves upward by a predetermined distance, the stopper 80 will contact the wall surface that forms the stopper groove 203 and is close to the assembly groove 103. At this time, the guide rod 60 cannot continue to move upward by a predetermined distance, that is, the stopper groove 203 is configured to limit the moving distance of the guide rod 60, thereby ensuring that the spacing between the moving and static contact holders 10 after separation and combination is within a predetermined value. Among them, the stopper 80 can be implemented as a retaining spring, and the mounting groove 601 is an annular mounting groove 601. That is, during installation, the retaining spring is squeezed by an external tool so that the retaining spring is placed in the installation groove 601, wherein when the installation groove 601 is located in the second insertion hole 201, the external tool is withdrawn, and the outer wall of the retaining spring is squeezed to form the wall surface of the second insertion hole 201, and then when the end of the guide rod 60 is placed in the guide hole 202, the retaining spring is placed in the limit groove 203.

[0036] In summary, the contact holder for the vacuum arc chamber based on the embodiment of the present application is explained, which provides the contact holder for the vacuum arc chamber with advantages such as long service life, ability to ensure contact between the static contact and the moving contact, and convenient installation.

[0037] It is worth mentioning that in the embodiment of the present application, the contact holder for the vacuum interrupter 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 contact holder for the vacuum interrupter 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.

[0038] 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 contact holder for a vacuum interrupter, characterized in that: The contact holder for the vacuum interrupter comprises: A contact seat body, the contact seat body is matched with the end of the external static conductive rod, and the contact seat body has a mounting groove on one side close to the external static conductive rod; a guide rod, one end of which is movably connected with the end of the external static conductive rod, and the other end of which passes through the assembly slot and is matched with the contact seat body; and An elastic member is placed in the assembly groove.

2. According to the contact seat for a vacuum arc extinguishing chamber as described in claim 1, a welding groove is provided on the side of the contact seat body facing away from the external static conductive rod, and a copper-chromium alloy sheet is also arranged on the welding groove, and the thickness of the copper-chromium alloy sheet is 3 mm.

3. A contact holder for a vacuum arc extinguishing chamber according to claim 2, wherein the bottom wall forming the welding groove also has a first insertion hole, and the side of the contact holder away from the welding groove has an assembly groove, and the first insertion hole is connected to the assembly groove, and the end of the guide rod passing through the assembly groove also passes through the first insertion hole and is welded to the bottom of the copper-chromium alloy sheet.

4. According to the contact seat for a vacuum arc extinguishing chamber as described in claim 3, the outer wall of the guide rod also has an annular limit end, the annular limit end is integrally formed with the guide rod, and the annular limit end is placed in the assembly groove, and the side of the annular limit end close to the welding groove is against the bottom wall forming the assembly groove.

5. The contact holder for a vacuum arc extinguishing chamber according to claim 4, wherein the elastic member is sleeved on the guide rod, and one end of the elastic member contacts the end of the external static conductive rod, and the other end abuts against the annular limit end.

6. A contact holder for a vacuum arc extinguishing chamber according to claim 5, wherein the end of the external static conductive rod also has a second insertion hole, and the bottom wall forming the second insertion hole also has a guide hole, the size of the guide hole is smaller than the size of the second insertion hole, and the other end of the guide rod passes through the second insertion hole and is movably connected to the guide hole.

7. According to the contact holder for a vacuum arc extinguishing chamber as described in claim 6, the side wall forming the second insertion hole also has a limiting groove, and the outer wall of the guide rod also has a mounting groove, and the mounting groove is also opposite to the limiting groove.

8. According to the contact seat for a vacuum arc chamber as described in claim 7, the contact seat for a vacuum arc chamber also includes a limit member, the limit member is installed in the installation groove, and the side of the limit member facing away from the installation groove is also arranged in the limit groove, and the size of the limit groove is larger than the size of the installation groove. 9 . The contact holder for a vacuum interrupter according to claim 8 , wherein the limiting member is a retaining spring.

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