CN215342426U - Vacuum arc-extinguishing chamber and conducting rod thereof - Google Patents
Vacuum arc-extinguishing chamber and conducting rod thereof Download PDFInfo
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- CN215342426U CN215342426U CN202121337588.1U CN202121337588U CN215342426U CN 215342426 U CN215342426 U CN 215342426U CN 202121337588 U CN202121337588 U CN 202121337588U CN 215342426 U CN215342426 U CN 215342426U
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Abstract
The utility model relates to a vacuum arc-extinguishing chamber and a conducting rod of the vacuum arc-extinguishing chamber. The conducting rod of the vacuum arc-extinguishing chamber comprises a rod main body; the rod main body is provided with an axial through hole to form a hollow structure; a rod core is arranged in the axial through hole; the rod core is welded and fixed on the rod main body; the end face of the outer end of the rod core is provided with a threaded hole for connecting an insulating pull rod. Above-mentioned scheme can be solved current conducting rod structure comparatively complicacy, makes inconvenient problem.
Description
Technical Field
The utility model relates to a vacuum arc-extinguishing chamber and a conducting rod of the vacuum arc-extinguishing chamber.
Background
The vacuum arc-extinguishing chamber is a core component of a vacuum circuit breaker and generally comprises a shell, a movable end contact assembly and a fixed end contact assembly. When the movable end contact assembly is used, the movable end contact assembly moves axially under the driving of the operating mechanism and is communicated with or separated from the static end contact assembly. The movable end contact assembly and the static end contact assembly both comprise a contact and a conductive rod, the contact is used for realizing the conduction of a circuit, the conductive rod is used for realizing the support of the contact, and the movable end conductive rod is also used for driving the movable end contact to move.
However, in the process of high-speed, high-frequency and high-impact opening and closing movement, the contact assembly is easily deformed, such as being upset or bent, so that the accuracy of the opening and closing stroke is seriously affected, the clamping stagnation of the movable end contact assembly is easily caused, and the reliability of the vacuum arc-extinguishing chamber is affected. In particular, for a fast mechanical switch, the operating mechanism often adopts a repulsion mechanism, the opening and closing speed is higher, the impact is stronger, and the problems are more prominent.
Chinese patent publication No. CN106128853A discloses a conducting rod structure of a vacuum arc-extinguishing chamber, wherein the main body of the conducting rod is hollow, the outer end of the conducting rod is connected with a conducting rod joint in a threaded manner and is fixedly connected with the conducting rod joint through anaerobic adhesive, and the inner end of the conducting rod is welded and fixed on the contact. The inside interference of conducting rod is equipped with the conducting rod core of steel, can improve shock resistance.
However, the conductive rod needs to be assembled on the conductive rod core in an interference manner, and a conductive rod joint needs to be arranged, so that the structure is complex and the manufacturing is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a vacuum arc-extinguishing chamber and a conducting rod of the vacuum arc-extinguishing chamber, and solves the problems of complex structure and inconvenient manufacture of the existing conducting rod.
The utility model discloses a conducting rod of a vacuum arc-extinguishing chamber, which adopts the following technical scheme:
a conducting rod of a vacuum arc-extinguishing chamber comprises a rod main body;
the rod main body is provided with an axial through hole to form a hollow structure; a rod core is arranged in the axial through hole;
the rod core is welded and fixed on the rod main body;
the end face of the outer end of the rod core is provided with a threaded hole for connecting an insulating pull rod.
Has the advantages that: adopt above-mentioned technical scheme, be equipped with the screw hole on the pole core outer end terminal surface, can supply insulating pull rod to connect, and pole core welded fastening can form higher fixed strength with the pole main part in the pole main part, satisfies the effort transmission demand of insulating pull rod, compares with prior art, need not set up the conducting rod joint alone, simple structure, the manufacturing of being convenient for.
As a preferred technical scheme: the inner end of the axial through hole in the rod main body is provided with a counter bore, the inner end of the rod core is provided with a positioning boss, and the positioning boss is radially positioned and arranged in the counter bore along the conducting rod.
Has the advantages that: by adopting the technical scheme, the contact area between the rod main body and the rod core can be increased, the radial positioning is more reliable, and the structural strength is higher.
As a preferred technical scheme: and a fillet is arranged between the end face of the outer end of the positioning boss and the outer peripheral surface of the rod main body.
Has the advantages that: by adopting the technical scheme, stress concentration can be avoided, and the reliability can be improved.
As a preferred technical scheme: the axial dimension of the positioning boss is equal to the axial dimension of the counter bore.
Has the advantages that: by adopting the technical scheme, the connection between the end face of the conducting rod and the contact is facilitated.
As a preferred technical scheme: the rod core and the rod main body are fixed through brazing filler metal between the rod core and the rod main body in the radial direction.
Has the advantages that: by adopting the technical scheme, the welding fixation between the rod core and the rod main body can be conveniently realized, the connection strength is ensured, and the power transmission requirement is better met.
As a preferred technical scheme: the rod core is a hollow rod and is provided with an inner hole which is axially communicated.
Has the advantages that: by adopting the technical scheme, the weight of the conducting rod is favorably reduced.
As a preferred technical scheme: the outer end face of the rod core is flush with the corresponding end face of the rod main body.
Has the advantages that: by adopting the technical scheme, the conductive rod is conveniently in conductive connection with the contact and the insulating pull rod.
The conducting rod of the vacuum arc-extinguishing chamber adopts the following technical scheme:
vacuum interrupter, includes:
the device comprises a shell, a first contact assembly and a second contact assembly, wherein the shell is provided with a movable end contact assembly and a static end contact assembly, and the movable end contact assembly and the static end contact assembly both comprise a conductive rod and a contact;
the conducting rod of the movable end contact assembly and/or the static end contact assembly comprises a rod main body;
the rod main body is provided with an axial through hole to form a hollow structure; a rod core is arranged in the axial through hole;
the rod core is welded and fixed on the rod main body;
the end face of the outer end of the rod core is provided with a threaded hole for connecting an insulating pull rod.
Has the advantages that: adopt above-mentioned technical scheme, be equipped with the screw hole on the pole core outer end terminal surface, can supply insulating pull rod to connect, and pole core welded fastening can form higher fixed strength with the pole main part in the pole main part, satisfies the effort transmission demand of insulating pull rod, compares with prior art, need not set up the conducting rod joint alone, simple structure, the manufacturing of being convenient for.
As a preferred technical scheme: the inner end of the axial through hole in the rod main body is provided with a counter bore, the inner end of the rod core is provided with a positioning boss, and the positioning boss is radially positioned and arranged in the counter bore along the conducting rod.
Has the advantages that: by adopting the technical scheme, the contact area between the rod main body and the rod core can be increased, the radial positioning is more reliable, and the structural strength is higher.
As a preferred technical scheme: and a fillet is arranged between the end face of the outer end of the positioning boss and the outer peripheral surface of the rod main body.
Has the advantages that: by adopting the technical scheme, stress concentration can be avoided, and the reliability can be improved.
As a preferred technical scheme: the axial dimension of the positioning boss is equal to the axial dimension of the counter bore.
Has the advantages that: by adopting the technical scheme, the connection between the end face of the conducting rod and the contact is facilitated.
As a preferred technical scheme: the rod core and the rod main body are fixed through brazing filler metal between the rod core and the rod main body in the radial direction.
Has the advantages that: by adopting the technical scheme, the welding fixation between the rod core and the rod main body can be conveniently realized, the connection strength is ensured, and the power transmission requirement is better met.
As a preferred technical scheme: the rod core is a hollow rod and is provided with an inner hole which is axially communicated.
Has the advantages that: by adopting the technical scheme, the weight of the conducting rod is favorably reduced.
As a preferred technical scheme: the outer end face of the rod core is flush with the corresponding end face of the rod main body.
Has the advantages that: by adopting the technical scheme, the conductive rod is conveniently in conductive connection with the contact and the insulating pull rod.
As a preferred technical scheme: and one end of the contact for connecting the conducting rod is provided with an embedded groove for embedding the inner end of the conducting rod.
Has the advantages that: by adopting the technical scheme, the conducting rod can be radially positioned, and the connection strength between the conducting rod and the contact can be improved.
As a preferred technical scheme: the contact is provided with a ring platform, and the embedded groove is arranged on the ring platform.
Has the advantages that: adopt above-mentioned technical scheme can avoid setting up of inlay groove to influence the thickness of contact, be favorable to guaranteeing structural strength.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of a vacuum interrupter in the present invention;
FIG. 2 is a schematic structural view of the core of FIG. 1;
fig. 3 is an enlarged view of a portion of the junction of the moving-end contact and the moving-end conductive rod of fig. 1.
The names of the components corresponding to the corresponding reference numerals in the drawings are: 11. a housing; 21. a moving end contact assembly; 31. a stationary end contact assembly; 41. a conductive rod; 42. a contact; 43. a lever body; 44. an axial through hole; 45. embedding a groove; 46. a ring platform; 47. a counter bore; 51. a rod core; 52. a threaded hole; 53. positioning the boss; 54. rounding off; 55. an inner bore.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present in the embodiments of the present invention, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that "comprises an … …" is intended to indicate that there are additional elements of the same process, method, article, or apparatus that comprise the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Example 1 of the vacuum interrupter of the present invention:
as shown in fig. 1, the vacuum interrupter includes a housing 11, a movable end contact assembly 21 and a stationary end contact assembly 31 are disposed on the housing 11, the movable end contact assembly 21 and the stationary end contact assembly 31 both include a conductive rod 41 and a contact 42, the movable end contact assembly 21 includes a movable end contact and a movable end conductive rod, and the stationary end contact assembly 31 includes a stationary end contact and a stationary end conductive rod.
The conductive rod 41 of the moving-end contact assembly 21 includes a rod main body 43, and the rod main body 43 is made of copper and is provided with an axial through hole 44, so as to form a hollow structure. The rod core 51 is welded and fixed in the axial through hole 44 of the rod main body 43, and the rod core 51 is made of steel and is welded and fixed on the rod main body 43 through an annular welding seam on the end face for reinforcing the overall strength of the conductive rod 41.
Specifically, as shown in fig. 2 and fig. 3, one end of the conductive rod 41 for connecting with the contact 42 is an inner end, and the other end is an outer end, and a threaded hole 52 is provided on an end surface of the outer end of the rod core 51 for connecting with an insulating pull rod. The inner of pole core 51 is equipped with big diameter section, and big diameter section forms location boss 53, correspondingly, and the axis through-hole inner of pole main part 43 is equipped with counter bore 47, and location boss 53 sets up along the radial location of conducting rod 41 in counter bore 47, can improve the area of contact of pole main part and pole core, and radial location is more reliable, and structural strength is higher. Moreover, since the rod core 51 needs to transmit power to the rod main body 43, in order to prevent the rod core 51 from being pulled out of the rod main body 43, the large-diameter section and the hole bottom wall of the counter bore are in blocking fit along the axial direction of the conductive rod, and the rod core is prevented from moving to the outer end of the conductive rod.
In order to avoid stress concentration, a rounded corner 54 is provided between the outer end surface of the positioning boss 53 and the outer peripheral surface of the lever main body 43, as shown in fig. 3. For weight reduction, the stem core 51 is a hollow stem having an axially extending bore 55 therethrough. In order to better position the conductive rod 41 and improve the connection strength, the end of the contact 42, to which the conductive rod 41 is connected, is provided with an embedded groove 45, and the inner end of the conductive rod 41 is embedded and welded and fixed. The contact 42 is provided with the ring platform 46, and the embedded groove 45 is arranged on the ring platform 46, so that the influence of the arrangement of the embedded groove 45 on the overall strength of the contact 42 can be avoided.
In manufacturing the conductive rod 41 assembly, the rod core 51 is inserted from the inner end of the rod main body 43 such that the inner end surface and the outer end surface of the rod core 51 are flush with the corresponding end surfaces of the rod main body 43, respectively, and then the rod core 51 is fixed to the rod main body 43 by brazing. Finally, the conductive rod 41 is positioned in the embedded groove 45 on the contact 42, and the conductive rod 41 and the contact 42 are fixed together by welding.
Example 2 of the vacuum interrupter of the present invention:
the difference between this embodiment and embodiment 1 is that, in embodiment 1, the rod core 51 is a hollow structure, while in this embodiment, the rod core 51 is a solid structure, and only the outer end is provided with a threaded hole 52 for connecting the insulating pull rod.
Example 3 of the vacuum interrupter of the present invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the inner end surface and the outer end surface of the rod core 51 are flush with the corresponding end surfaces of the rod main body 43, respectively, whereas in the present embodiment, the inner end surface of the rod core 51 is recessed into the inner end surface of the rod main body 43. In other embodiments, the outer end face of the core 51 may also be recessed into the body 43.
Example 4 of the vacuum interrupter of the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the axial dimension of the counter bore 47 is equal to the axial dimension of the positioning boss 53, while in this embodiment, the axial dimension of the counter bore 47 is larger than the axial dimension of the large diameter section 53, but the positioning boss 53 and the bottom wall of the counter bore 47 are still in axial stop fit along the conductive rod 41, and the rod core 51 can still be prevented from moving towards the outer end of the conductive rod 41.
Example 5 of the vacuum interrupter of the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the inner end of the axial through hole 44 in the rod main body 43 is provided with a counter bore 47, while in this embodiment, the axial through hole in the rod main body 43 is a constant diameter hole, and the rod core 51 is a constant diameter rod, and is directly welded and fixed on the rod main body 43.
Example 6 of the vacuum interrupter of the present invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the inner end of the rod core 51 is provided with a large diameter section, and the large diameter section forms the positioning bosses 53, while in this embodiment, the positioning bosses 53 are distributed along the circumferential direction of the rod core 51 to form a spline structure. Of course, in other embodiments, the counter bores may be provided in a splined bore configuration.
Example 7 of the vacuum interrupter of the utility model:
the difference between this embodiment and embodiment 1 is that in embodiment 1, only the conductive rod 41 of the movable end contact assembly 21 in the vacuum interrupter is provided with the rod core 51, while in this embodiment, the conductive rods 41 of the movable end contact assembly 21 and the stationary end contact assembly 31 in the vacuum interrupter are provided with the rod cores 51.
The embodiment of the conducting rod of the vacuum arc-extinguishing chamber comprises the following components: the embodiment of the conductive rod of the vacuum interrupter, i.e., the movable end conductive rod or the stationary end conductive rod provided with the rod core 51 described in any of the above embodiments of the vacuum interrupter, will not be described in detail here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A conductive rod of a vacuum interrupter includes a rod main body (43);
the rod main body (43) is provided with an axial through hole (44) to form a hollow structure; a rod core (51) is arranged in the axial through hole (44);
it is characterized in that the preparation method is characterized in that,
the rod core (51) is welded and fixed on the rod main body (43);
one end of the conductive rod (41) used for being connected with the contact (42) is an inner end, the other end of the conductive rod is an outer end, and a threaded hole (52) is formed in the end face of the outer end of the rod core (51) and used for connecting the insulating pull rod.
2. The conducting rod as claimed in claim 1, characterized in that the inner end of the axial through hole (44) in the rod body (43) is provided with a counter bore (47), the inner end of the rod core (51) is provided with a positioning boss (53), and the positioning boss (53) is positioned and arranged in the counter bore (47) along the radial direction of the conducting rod (41).
3. The electric conduction rod as claimed in claim 2, wherein a rounded corner (54) is provided between the outer end face of the positioning boss (53) and the outer peripheral surface of the rod main body (43).
4. The conducting rod according to claim 2 or 3, characterized in that the axial dimension of the positioning boss (53) is equal to the axial dimension of the counterbore (47).
5. The electrically conductive rod as claimed in claim 1, 2 or 3, wherein the rod core (51) and the rod body (43) are fixed by brazing between both in the radial direction.
6. The electrically conductive rod as claimed in claim 1, 2 or 3, characterized in that the rod core (51) is a hollow rod with an inner bore (55) running axially through.
7. The conducting rod as claimed in claim 1, 2 or 3, characterized in that the outer end face of the rod core (51) is flush with the corresponding end face of the rod body (43).
8. Vacuum interrupter, includes:
the device comprises a shell (11), wherein a movable end contact assembly (21) and a fixed end contact assembly (31) are arranged on the shell (11), and both the movable end contact assembly (21) and the fixed end contact assembly (31) comprise a conductive rod (41) and a contact (42);
characterized in that the conductive rod of the moving end contact assembly (21) and/or the stationary end contact assembly (31) is the conductive rod of any one of claims 1 to 7.
9. Vacuum interrupter according to claim 8, characterized in that the contact (42) is provided with a recessed groove (45) at the end for connecting the conducting rod (41), into which the inner end of the conducting rod (41) is inserted.
10. Vacuum interrupter according to claim 9, characterized in that the contact (42) is provided with a collar (46), the insert groove (45) being provided on the collar (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337588.1U CN215342426U (en) | 2021-06-16 | 2021-06-16 | Vacuum arc-extinguishing chamber and conducting rod thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337588.1U CN215342426U (en) | 2021-06-16 | 2021-06-16 | Vacuum arc-extinguishing chamber and conducting rod thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215342426U true CN215342426U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121337588.1U Active CN215342426U (en) | 2021-06-16 | 2021-06-16 | Vacuum arc-extinguishing chamber and conducting rod thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215342426U (en) |
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2021
- 2021-06-16 CN CN202121337588.1U patent/CN215342426U/en active Active
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