CN208589388U - A kind of micro vacuum contact head mechanism - Google Patents
A kind of micro vacuum contact head mechanism Download PDFInfo
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- CN208589388U CN208589388U CN201821439229.5U CN201821439229U CN208589388U CN 208589388 U CN208589388 U CN 208589388U CN 201821439229 U CN201821439229 U CN 201821439229U CN 208589388 U CN208589388 U CN 208589388U
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Abstract
The utility model discloses a kind of micro vacuum contact head mechanisms, belong to the technical field of electrical equipment, hollow housing including both ends open, the inner cavity of the hollow housing is divided into vacuum extinction area and behaviour area by partition, and the end of vacuum extinction area and behaviour area is sealedly connected with static contact and end cap respectively；Movable sleeve is connected to moving contact corresponding with the static contact, the other end of moving contact and the end cap phase pivot bush unit on the partition；Bellows is socketed on the moving contact, the both ends of bellows are tightly connected respectively with partition and moving contact and the inside of bellows is connected to form vacuum chamber with vacuum extinction area；The inside of the recreation room is equipped with the tower-shaped spring being placed on the moving contact, and tower-shaped spring, to reach the internal structure of optimization vacuum contact head, promotes the scope of application of vacuum contact head and the purpose of reliability for driving moving contact sliding to reset.
Description
Technical field
The utility model belongs to the technical field of electrical equipment, in particular to a kind of micro vacuum contact head mechanism.
Background technique
Vacuum switch tube is the core devices of vacuum switch (breaker, contactor, on-load switch etc.), is widely used in electricity
The national economy every profession and trade such as power, metallurgy, machinery, mine, traffic, national defence, military project, scientific research, industry, agricultural, is national development
Indispensable important devices；It is the renewal product for replacing traditional oil circuit breaker, has small in size, light weight, cut-offs appearance
Amount is big, use reliability is high and the remarkable advantages such as easy to maintain, it has also become the direction of domestic and international switch industry development and application.
The critical component of vacuum circuit breaker is vacuum switch tube, by the movement of internal tripping mechanism, drives vacuum switch
Being switched on or switched off for interior contact electrode is managed, to realize the opening and closing lock of breaker, existing breaker vacuum switch tube makes
Used time is primarily present following defect:
(1) traditional vacuum switch tube be all made of external spring with realize between moving contact and static contact point, close it is dynamic
It resets, causes that the overall volume of vacuum switch tube is larger and structure is complicated；
(2) vacuum chamber inside traditional vacuum switch tube is overall structure, can not dismantle, cause for vacuum switch tube
Later period maintenance workload it is larger.
Utility model content
In view of this, in order to solve the above problems existing in the present technology, the utility model aim is to provide a kind of micro-
Type vacuum contact head mechanism promotes the scope of application of vacuum contact head and reliable to reach the internal structure of optimization vacuum contact head
The purpose of property.
The technology employed by the present utility model is a kind of micro vacuum contact head mechanism, including in both ends open
The inner cavity of empty capsid, the hollow housing is divided into vacuum extinction area and behaviour area, vacuum extinction area and behaviour area by partition
End be sealedly connected with static contact and end cap respectively；Movable sleeve is connected to dynamic touching corresponding with the static contact on the partition
Head, the other end of moving contact and the end cap phase pivot bush unit；Bellows, the both ends point of bellows are socketed on the moving contact
It is not tightly connected with partition and moving contact and the inside of bellows is connected to form vacuum chamber with vacuum extinction area；The recreation room
Inside is equipped with the tower-shaped spring being placed on the moving contact, and tower-shaped spring is for driving moving contact sliding to reset.
Further, the inner cavity of the hollow housing is divided into the first stepped cavity and the second stepped cavity, the first stepped cavity and
Two stepped cavities are internal diameter of the internal diameter less than the second stepped cavity of circular cavity and the first stepped cavity；The partition is set to the first rank
The inside of terraced chamber.
Further, baffle is set on the moving contact；The tower-shaped spring is located at the inside of the second ladder cavity, tower
The both ends of shape spring are against respectively on the bottom of the second stepped cavity and the surface of baffle.
Further, contact electrode is equipped on the static contact and the opposite end of moving contact.
Further, the contact electrode is cylindrical, and contact electrode surface is provided with the silver-tin layer of resistance to scaling loss.
Further, it is threadedly coupled between one end of the static contact and the end in vacuum extinction area and is equipped between the two
Seal washer, the other end offer threaded interior hole.
Further, the moving contact in ladder shaft-like and is divided into the first multi-diameter shaft and the second multi-diameter shaft, the first multi-diameter shaft
Outer diameter be greater than the second multi-diameter shaft outer diameter；The bellows-sheathed is in the outside of the first multi-diameter shaft and the end of bellows and dynamic touching
The shoulder face of head is tightly connected.
The utility model has the following beneficial effects:
1. movable sleeve is connected to moving contact, moving contact and stationary contact to micro vacuum contact head disclosed by the utility model inside it
Head point, close vacuum extinction area inside carry out, form vacuum chamber in the case where cooperating bellows, electric arc can be effectively prevent
The generation of petard increases the service life and security reliability of vacuum contact head；By the way that tower-shaped spring is set to behaviour area
Inside, tower-shaped spring can promote moving contact to separate with respect to static contact, and tower-shaped spring can save internal occupancy sky in compression
Between, overall volume to realize vacuum contact head is small, internal structure is simple advantage；
2. the inside of hollow housing to be arranged to the structure of stepped cavity, be conducive to assemble the end of tower-shaped spring,
It realizes the normal function of tower-shaped spring, internal occupied space can be saved to greatest extent；
3. moving contact to be arranged to the structure of multi-diameter shaft, be conducive to the axis that the end part seal of bellows is connected to moving contact
At shoulder, to guarantee moving contact when moving back and forth, the sealing performance of vacuum chamber accesses good holding；
4. being equipped with the silver-tin layer of resistance to scaling loss on the surface of contact electrode, making for contact electrode can be further promoted
With the service life, prevent contact electrode from generating damage when dividing, closing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in off-state of micro vacuum contact head provided by the utility model mechanism；
Fig. 2 is the structural schematic diagram when closing closed state of micro vacuum contact head provided by the utility model mechanism.
Specific embodiment
It will explain the exemplary embodiments in detail below, the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
In the absence of explanation to the contrary, the noun of locality used such as " upper and lower " is usually with disclosure exemplary embodiment
The micro vacuum contact head mechanism of offer is undefined the case where working normally, and " inside and outside " then refers to corresponding component profile
It is inner and outer." remote, close " is defined on the basis of micro vacuum contact head mechanism.
As Figure 1-Figure 2, the utility model provides a kind of micro vacuum contact head mechanism, including in both ends open
The inner cavity of empty capsid 1, the hollow housing 1 is divided into vacuum extinction area 3 and behaviour area 4 by partition 2, and partition 2 is integrally formed
In the inside of the hollow housing 1, the end of vacuum extinction area 3 and behaviour area 4 is sealedly connected with static contact 5 and end cap 6 respectively,
After static contact 5 and end cap 6 are assembled, the inside of hollow housing 1 is in integrally closed state；Movable sleeve is connected on the partition 2
Moving contact 7 corresponding with the static contact 5, the other end of moving contact 7 and the 6 phase pivot bush unit of end cap, i.e., in 2 He of partition
The through-hole to match with moving contact 7 is offered on end cap 6, with realize moving contact 7 be able to carry out it is free to slide and with static contact 5 it
Between effectively divided, conjunction movement；Be socketed with bellows 8 on the moving contact 7, the both ends of bellows 8 respectively with partition 2 and dynamic touching
First 7 are tightly connected and the inside of bellows 8 be connected to form vacuum chamber with vacuum extinction area 3, bellows 8 be mainly to partition 2 and
Fit clearance between moving contact 7 is sealed, to form the good vacuum chamber of leakproofness, to vacuumizing in vacuum chamber
(such as: on static contact 5 equipped with the vacuum exhaust nozzle that is communicated inside vacuum extinction area 3, with realize vacuum chamber take out it is true
Other evacuation process can also be used in sky), make moving contact 7 and static contact 5 between the two point, conjunction movement be in it is opposite
It is carried out in the environment of vacuum, can effectively avoid and generate arc spark when circuit is connected；The inside of the recreation room is equipped with and is placed on
Tower-shaped spring 9 on the moving contact 7, for driving the sliding of moving contact 7 to reset, tower-shaped spring 9 is used for dynamic touching tower-shaped spring 9
First 7 provide active force, and for the tripping mechanism inside miniature circuit breaker after tripping, moving contact 7 is under the action of tower-shaped spring 9
It can be separated between static contact 5, achieve the purpose that open circuit.
The inner cavity of the hollow housing 1 is in stepped cavity shape, and the stepped cavity is divided into the first stepped cavity and the second stepped cavity,
First stepped cavity and the second stepped cavity are interconnected and the two is located on same central axes, and the first stepped cavity and the second stepped cavity are equal
For circular cavity and the internal diameter of the first stepped cavity less than the second stepped cavity internal diameter；The partition 2 is set to the interior of the first stepped cavity
Portion.
Baffle 10 is set on the moving contact 7, baffle 10 is set as annular disk and is equipped with disjunction on the surface of annular disk
Gap, to realize that baffle 10 can cover on moving contact 7, the surface of moving contact 7 is equipped with the ring to match with annular disk inner hole
Shape slot, what annular disk can fasten is clamped on the inside of annular groove, is pushed against with the end to tower-shaped spring 9；It is described tower-shaped
Spring 9 is located at the inside of the second ladder cavity, and the both ends of tower-shaped spring 9 are against bottom and the baffle 10 of the second stepped cavity respectively
On surface, tower-shaped spring 9 can save space upper to greatest extent when shrinking.
It is equipped with contact electrode 11 on the static contact 5 and the opposite end of moving contact 7, contact electrode 11 can be stationary contact
First 5 perhaps a part of moving contact 7 be also possible to contact electrode 11 and be shaped on static contact 5 or moving contact 7, as
Preferably, the contact electrode 11 is cylindrical, and 11 surface of contact electrode is provided with the silver-tin layer of resistance to scaling loss, silver-oxidation
The tin layer of resistance to scaling loss can further promote the service life of contact electrode 11, and two contact electrodes 11 is prevented to be repeated
Generation high temperature scaling loss, promotes the service life of vacuum contact head during dividing, closing.
It is threadedly coupled between one end of the static contact 5 and the end in vacuum extinction area 3 and is equipped with gasket between the two
Circle, seal washer can promote the assembly leakproofness between static contact 5 and vacuum extinction area 3, and the other end offers threaded interior hole 12,
Threaded interior hole 12 connects other external components for static contact 5, is assemblied in adaptation to guarantee that vacuum contact head mechanism can stablize
Miniature circuit breaker inside.
The moving contact 7 is in ladder shaft-like and is divided into the first multi-diameter shaft and the second multi-diameter shaft, and the outer diameter of the first multi-diameter shaft is big
In the outer diameter of the second multi-diameter shaft；First multi-diameter shaft is placed on the first ladder with through-hole phase pivot bush unit, bellows 8 on partition 2
The outside of axis and the sealed connection of the shoulder face of the end of bellows 8 and moving contact 7, bellows 8 can be by moving contact 7 and partition
Fit clearance between 2 is sealed.
Preferably, in actual application process, due to static contact 5 with moving contact 7 in connecting conducting process, may
Fever phenomenon is generated, several heat release holes can be offered on end cap 6, since design has the knot of bellows 8 in hollow housing 1
Structure, heat release hole do not interfere with the leakproofness of vacuum chamber, and the setting of heat release hole can promote air of the moving contact 7 in conducting process
Circulation, to carry out good heat dissipation, the service life and durability of further hoisting mechanism.
The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model
Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted
The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.
Claims (7)
1. a kind of micro vacuum contact head mechanism, the hollow housing including both ends open, which is characterized in that the hollow housing
Inner cavity is divided into vacuum extinction area and behaviour area by partition, and the end of vacuum extinction area and behaviour area is sealedly connected with quiet respectively
Contact and end cap；Movable sleeve is connected to moving contact corresponding with the static contact, the other end of moving contact and institute on the partition
State end cap phase pivot bush unit；Bellows is socketed on the moving contact, the both ends of bellows are sealed with partition and moving contact respectively
The inside of connection and bellows is connected to form vacuum chamber with vacuum extinction area；The inside of the recreation room is equipped with and is placed on the dynamic touching
Tower-shaped spring on head, tower-shaped spring is for driving moving contact sliding to reset.
2. micro vacuum contact head mechanism according to claim 1, which is characterized in that the inner cavity of the hollow housing is divided into
One stepped cavity and the second stepped cavity, the first stepped cavity and the second stepped cavity are that the internal diameter of circular cavity and the first stepped cavity is less than
The internal diameter of second stepped cavity；The partition is set to the inside of the first stepped cavity.
3. micro vacuum contact head mechanism according to claim 2, which is characterized in that be set with baffle on the moving contact；
The tower-shaped spring is located at the inside of the second ladder cavity, and the both ends of tower-shaped spring are against bottom and the gear of the second stepped cavity respectively
On the surface of plate.
4. micro vacuum contact head mechanism according to claim 1, which is characterized in that the static contact and moving contact are opposite
Contact electrode is equipped on end.
5. micro vacuum contact head mechanism according to claim 4, which is characterized in that the contact electrode is cylindrical, and
Contact electrode surface is provided with the silver-tin layer of resistance to scaling loss.
6. micro vacuum contact head mechanism according to claim 1, which is characterized in that go out with vacuum one end of the static contact
It is threadedly coupled between the end in arc area and is equipped with seal washer between the two, the other end offers threaded interior hole.
7. according to claim 1 or 4 micro vacuum contact head mechanisms, which is characterized in that the moving contact is in ladder shaft-like
And it is divided into the first multi-diameter shaft and the second multi-diameter shaft, the outer diameter of the first multi-diameter shaft is greater than the outer diameter of the second multi-diameter shaft；The bellows
It is placed on the outside of the first multi-diameter shaft and the shoulder face of the end of bellows and moving contact is tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439229.5U CN208589388U (en) | 2018-09-03 | 2018-09-03 | A kind of micro vacuum contact head mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439229.5U CN208589388U (en) | 2018-09-03 | 2018-09-03 | A kind of micro vacuum contact head mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208589388U true CN208589388U (en) | 2019-03-08 |
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ID=65545633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821439229.5U Active CN208589388U (en) | 2018-09-03 | 2018-09-03 | A kind of micro vacuum contact head mechanism |
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| Country | Link |
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| CN (1) | CN208589388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137810A (en) * | 2019-05-26 | 2019-08-16 | 余姚市宏宇输变电工程有限公司舜能电气分公司 | A kind of switchgear |
| CN111326363A (en) * | 2020-02-28 | 2020-06-23 | 湖南斯德克智能开关有限公司 | Zero-arcing knife switch |
| CN112583104A (en) * | 2020-12-02 | 2021-03-30 | 刘晓明 | Mining incessant formula DC power supply control box |
-
2018
- 2018-09-03 CN CN201821439229.5U patent/CN208589388U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137810A (en) * | 2019-05-26 | 2019-08-16 | 余姚市宏宇输变电工程有限公司舜能电气分公司 | A kind of switchgear |
| CN110137810B (en) * | 2019-05-26 | 2024-05-17 | 余姚市宏宇输变电工程有限公司舜能电气分公司 | Switch cabinet |
| CN111326363A (en) * | 2020-02-28 | 2020-06-23 | 湖南斯德克智能开关有限公司 | Zero-arcing knife switch |
| CN111326363B (en) * | 2020-02-28 | 2022-09-27 | 湖南斯德克智能科技有限公司 | Zero-flashover knife switch |
| CN112583104A (en) * | 2020-12-02 | 2021-03-30 | 刘晓明 | Mining incessant formula DC power supply control box |
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