Contact fixing structure for vacuum arc-extinguishing chamber

Abstract

The utility model relates to the field of vacuum arc extinguish chambers, in particular to a contact fixing structure for a vacuum arc extinguish chamber, which comprises a shaft rod, a fixing part and a fixing part, the shaft rod is provided with a head part, the head part is matched with the contact, the head part is provided with an extension part, an abutting part and an insertion part, the two ends of the abutting part are connected with the extension part and the insertion part respectively, and the insertion part is matched with the bottom of the contact; the bottom of the connecting block is fixedly connected with the end, deviating from the abutting part, of the inserting part, a pressed groove is formed in the end, deviating from the inserting part, of the connecting block, and the pressed groove can be extruded by a stamping head of an external stamping device to deform, so that the size, arranged at the end of the pressed groove, of the connecting block is increased; the position of the shaft rod is limited. The short-distance stamping die has the advantages of being convenient to use, short-distance stamping and high in practicability by effectively utilizing the structural configuration of the short-distance stamping die.

Description

Technical Field

[0001] This application relates to the field of vacuum interrupters, and more specifically to a contact fixing structure for a vacuum interrupter. Background Technology

[0002] Existing contact fixing structures such as Figure 4 As shown, it includes a rod and a contact. The contact has a pressing hole 100, and the bottom wall forming the pressing hole 100 has a connecting hole 200. The connecting hole passes through the contact, and one end of the rod is located in the connecting hole. The end of the rod located in the connecting hole also has a positioning hole 300, which is directly opposite the pressing hole 100. An external screw can engage with the positioning hole 300 and press against the bottom wall forming the pressing hole 100 to define the position of the contact. However, the above technical solution uses screw fastening, which is cumbersome in the assembly process. If the screw and positioning hole are fitted using a stamping method, the positioning hole is more prone to cracking. Therefore, there is a need for a convenient, short-distance stamping, and highly practical contact fixing structure for vacuum interrupters. Summary of the Invention

[0003] The main objective of this application is to provide a contact fixing structure for a vacuum interrupter, wherein the contact fixing structure for the vacuum interrupter can effectively utilize its own structural configuration to achieve the advantages of convenient use and short-distance stamping.

[0004] Another objective of this application is to provide a contact fixing structure for a vacuum interrupter, wherein the contact fixing structure for the vacuum interrupter includes a shaft; a contact, the shaft having a head that mates with the contact, and the head having an extension, a stop, and an insertion portion, the two ends of the stop being connected to the extension and the insertion portion respectively, and the insertion portion mates with the bottom of the contact; and a connecting block, the bottom of the connecting block being fixedly connected to the end of the insertion portion away from the stop, and the end of the connecting block away from the insertion portion having a pressure groove, the pressure groove being configured to be deformed by the pressure of the stamping head of an external stamping device, so that the size of the connecting block at the end of the pressure groove increases, thereby limiting the position of the shaft, that is, short-distance stamping is achieved by pressing the pressure groove, and the position of the contact is limited only by the deformation of the end of the connecting block.

[0005] Another objective of this application is to provide a contact fixing structure for a vacuum interrupter, wherein the contact fixing structure for the vacuum interrupter is simple in structure, easy to operate, does not involve complex manufacturing processes and expensive materials, has high economic efficiency, and is easy to promote and use.

[0006] To achieve at least one of the above-mentioned objectives, this application provides a contact fixing structure for a vacuum interrupter, wherein the contact fixing structure for the vacuum interrupter includes:

[0007] One shaft;

[0008] A contact, wherein the shaft has a head that mates with the contact, and the head has an extension, a stop portion, and an insertion portion, the two ends of the stop portion being connected to the extension and the insertion portion respectively, and the insertion portion mates with the bottom of the contact; and

[0009] A connecting block, the bottom of which is fixedly connected to the end of the insertion part away from the abutment part, and the end of the connecting block away from the insertion part has a pressure groove. The pressure groove is configured to be deformed by the pressure of the punch head of an external punching device, so that the size of the connecting block at the end of the pressure groove increases, thereby limiting the position of the shaft.

[0010] In one or more embodiments of this application, the end of the contact away from the shaft has a first mating hole, and the bottom wall forming the first mating hole has a second mating hole, wherein the second mating hole is a tapered hole.

[0011] In one or more embodiments of this application, the left end of the contact near the shaft has a first insertion hole, the first insertion hole is connected to a second mating hole, and the size of the first mating hole is larger than the size of the second mating hole, the size of the second mating hole is the same as the size of the first insertion hole, wherein the contact is disposed on the wall surface of the first insertion hole and abuts against the side of the abutting portion near the insertion portion, while the end of the insertion portion away from the abutting portion contacts the wall surface forming the first insertion hole.

[0012] In one or more embodiments of this application, the insertion portion further has a second insertion hole on the side facing the first insertion hole, and the second insertion hole is directly opposite the second mating hole.

[0013] In one or more embodiments of this application, the sidewall forming the second mating hole also has a plurality of evenly distributed strip grooves, and the two ends of the strip grooves are respectively connected to the first mating hole and the second insertion hole.

[0014] In one or more embodiments of this application, the bottom wall forming the second insertion hole has a protrusion, and the bottom wall of the connecting block has a mounting hole, the mounting hole being threadedly connected to the protrusion.

[0015] In one or more embodiments of this application, the outer wall of the connecting block also has a plurality of evenly distributed strip-shaped protrusions, and the plurality of strip-shaped protrusions respectively cooperate with the plurality of strip-shaped grooves. Attached Figure Description

[0016] 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:

[0017] Figure 1 The figure shows a schematic diagram of a contact fixing structure for a vacuum interrupter.

[0018] Figure 2 The figure shows an axial sectional view of a contact fixing structure for a vacuum interrupter.

[0019] Figure 3 The figure shows a stamping schematic diagram of a contact fixing structure for a vacuum interrupter.

[0020] Figure 4 The diagram illustrates the contact fixing structure of an existing vacuum interrupter. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] refer to Figures 1 to 3 According to a preferred embodiment of the present invention, a contact 20 fixing structure for a vacuum interrupter is provided. It should be noted that the structure of the contact 20 fixing structure for the vacuum interrupter is as follows: Figure 1 As shown, it includes a shaft 10 and a contact 20. It should be noted that if the shaft 10 is a moving rod, the contact 20 is implemented as a moving contact; if the shaft 10 is a stationary rod, the contact 20 is implemented as a stationary contact. It should be understood by those skilled in the art that the shaft 10 and the contact 20 cooperate with each other and are located inside the external shielding cover.

[0026] Specifically, the shaft 10 has a head that mates with the contact 20. The head has an extension 11, a stop 12, and an insertion part 13. The two ends of the stop 12 are connected to the extension 11 and the insertion part 13, respectively. The cross-sectional dimension of the extension 11 is larger than that of the stop 12, and the cross-sectional dimension of the stop 12 is larger than that of the insertion part 13. The insertion part 13 is configured to mate with the contact 20.

[0027] Furthermore, the end of the contact 20 opposite to the shaft 10 has a first mating hole 201, and the bottom wall forming the first mating hole 201 has a second mating hole 202. Further, the end of the contact 20 closest to the shaft 10 has a first insertion hole 203, which communicates with the second mating hole 202. It is worth noting that the size of the first mating hole 201 is larger than the size of the second mating hole 202, and the size of the second mating hole 202 is the same as the size of the first insertion hole 203.

[0028] It is worth mentioning that the insertion part 13 cooperates with the first insertion hole 203, and the contact 20 is disposed on the wall surface of the first insertion hole 203, abutting against the side of the abutting part 12 near the insertion part 13. At the same time, the end of the insertion part 13 away from the abutting part 12 contacts the wall surface forming the first insertion hole 203. The diameter of the first insertion hole 203 is larger than the cross-sectional size of the insertion part 13 to facilitate the cooperation between the insertion part 13 and the first insertion hole 203.

[0029] It should also be noted that the insertion part 13 has a second insertion hole 1301 on the side facing the first insertion hole 203, and the second insertion hole 1301 is directly opposite the second mating hole 202. For example... Figure 2 As shown, the size of the second insertion hole 1301 is the same as the size of the second mating hole 202.

[0030] Specifically, the sidewall forming the second mating hole 202 also has multiple evenly distributed strip grooves (not shown in the figure), and the strip grooves are formed by external machining. The two ends of the strip grooves are respectively connected to the first mating hole 201 and the second insertion hole 1301.

[0031] Specifically, the contact 20 fixing structure for the vacuum interrupter further includes a connecting block 30, which is fixed within the second insertion hole 1301. The bottom wall forming the second insertion hole 1301 has a protrusion 13011, and the bottom wall of the connecting block 30 has a mounting hole 301. The mounting hole 301 is threadedly connected to the protrusion 13011 to define the position of the connecting block 30. Notably, the outer wall of the connecting block 30 also has multiple evenly distributed strip-shaped protrusions 31, which respectively cooperate with multiple strip-shaped grooves to define the position of the connecting block 30 and simultaneously limit the rotation of the contact 20.

[0032] Specifically, the connecting block 30 also has a pressing groove 302 on the side opposite to the protrusion 13011. The pressing block of the external pressing device can press to form the wall of the pressing groove 302, so that the size of the pressing groove 302 is enlarged. At the same time, the end of the connecting block 30 with the pressing groove 302 is deformed due to the pressing of the external pressing device, thereby causing the size of the end of the connecting block 30 to become larger. That is, at this time, the size of the connecting block 30 at the end of the pressing groove 302 is larger than the size of the second mating hole 202, thereby limiting the up and down movement of the contact 20.

[0033] In summary, the contact fixing structure for a vacuum interrupter based on the embodiments of this application has been clarified, which provides advantages such as ease of use, short-distance stamping, and high practicality for the contact fixing structure for a vacuum interrupter.

[0034] It is worth mentioning that, in the embodiments of this application, the contact fixing structure for the vacuum interrupter is simple in structure, does not involve complex manufacturing processes or expensive materials, and has high economic efficiency. At the same time, for manufacturers, the contact fixing structure for the vacuum interrupter 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.

[0035] 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 contact fixing structure for a vacuum interrupter, characterized in that, The contact fixing structure for the vacuum interrupter includes: One shaft; A contact, wherein the shaft has a head that mates with the contact, and the head has an extension, a stop portion, and an insertion portion, the two ends of the stop portion being connected to the extension and the insertion portion respectively, and the insertion portion mates with the bottom of the contact; and A connecting block, the bottom of which is fixedly connected to the end of the insertion part away from the abutment part, and the end of the connecting block away from the insertion part has a pressure groove. The pressure groove is configured to be deformed by the pressure of the punch head of an external punching device, so that the size of the connecting block at the end of the pressure groove increases, thereby limiting the position of the shaft.

2. The contact fixing structure for a vacuum interrupter according to claim 1, wherein the end of the contact opposite to the shaft has a first mating hole, and the bottom wall forming the first mating hole has a second mating hole, and the second mating hole is a tapered hole.

3. The contact fixing structure for a vacuum interrupter according to claim 2, wherein the left end of the contact near the shaft has a first insertion hole, the first insertion hole is connected to a second mating hole, and the size of the first mating hole is larger than the size of the second mating hole, the size of the second mating hole is the same as the size of the first insertion hole, wherein the contact is disposed on the wall surface of the first insertion hole and abuts against the side of the abutting portion near the insertion portion, while the end of the insertion portion away from the abutting portion contacts the wall surface forming the first insertion hole.

4. The contact fixing structure for a vacuum interrupter according to claim 3, wherein the insertion part further has a second insertion hole on the side facing the first insertion hole, and the second insertion hole is directly opposite the second mating hole.

5. The contact fixing structure for a vacuum interrupter according to claim 4, wherein the sidewall forming the second mating hole further has a plurality of evenly distributed strip grooves, and the two ends of the strip grooves are respectively connected to the first mating hole and the second insertion hole.

6. The contact fixing structure for a vacuum interrupter according to claim 5, wherein the bottom wall forming the second insertion hole has a protrusion, and the bottom wall of the connecting block has a mounting hole, the mounting hole being threadedly connected to the protrusion.

7. The contact fixing structure for a vacuum interrupter according to claim 6, wherein the outer wall of the connecting block further has a plurality of evenly distributed strip-shaped protrusions, and the plurality of strip-shaped protrusions respectively cooperate with the plurality of strip-shaped grooves.

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