CN208834976U - A kind of vacuum interrupter - Google Patents
A kind of vacuum interrupter Download PDFInfo
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- CN208834976U CN208834976U CN201821729513.6U CN201821729513U CN208834976U CN 208834976 U CN208834976 U CN 208834976U CN 201821729513 U CN201821729513 U CN 201821729513U CN 208834976 U CN208834976 U CN 208834976U
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- bellows
- feeler lever
- flanges
- movable feeler
- positioning protrusion
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Abstract
The utility model provides a kind of vacuum interrupter, belongs to technical field of electronic devices.It solves the problems, such as existing vacuum interrupter poor sealing effect.This vacuum interrupter includes the shell with vacuum chamber, stationary contact bar and movable feeler lever, bellows is arranged on movable feeler lever, cricoid locating slot is offered on the outer peripheral surface of movable feeler lever upper end, the upper end of bellows has the in-flanges one extended in locating slot, the washer for compressing in-flanges one and the spring shim for packing washer are provided in locating slot, there is cricoid positioning protrusion one on the inner bottom surface of shell, the lower end of bellows is set on the outer peripheral surface of positioning protrusion one, and the middle part of the outer peripheral surface of positioning protrusion one has bellows distracted annular flange outward.Relief hole is isolated with vacuum chamber by bellows for this structure, forms dynamic sealing, and the upper and lower side of bellows is fixed, sealing effect is good.
Description
Technical field
The utility model belongs to technical field of electronic devices, especially a kind of vacuum interrupter.
Background technique
Currently, vacuum interrupter includes outer housing, stationary contact bar and movable feeler lever with vacuum chamber, offered on outer housing
Through-hole, movable feeler lever are arranged across through-hole, are using dynamic in order to guarantee the leakproofness of vacuum chamber, between movable feeler lever and through-hole
Sealing, the leakproofness of the dynamic seal structure between traditional movable feeler lever and through-hole is general, movable feeler lever long-time frequent movement
Afterwards, dynamic seal structure is easy to appear leakage, and vacuum chamber is caused non-vacuum occur, and using effect is poor.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of good true of using effect
Empty arc-chutes.
The purpose of this utility model can be realized by the following technical scheme: a kind of vacuum interrupter, including with vacuum
The lower end of shell, stationary contact bar and the movable feeler lever of chamber, the stationary contact bar extends in vacuum chamber through the top surface of shell, the shell
Offer relief hole on bottom surface, the movable feeler lever, which slides up and down, to be arranged in relief hole and the upper end of the movable feeler lever extends to vacuum chamber
It is interior, bellows is arranged on the movable feeler lever, which is characterized in that is offered on the outer peripheral surface of the movable feeler lever upper end cricoid
Locating slot, the upper end of the bellows have the in-flanges one extended in locating slot, are provided in the locating slot for compressing
The washer of in-flanges one and spring shim for packing washer have cricoid positioning protrusion on the inner bottom surface of the shell
One, the lower end of the bellows is set on the outer peripheral surface of positioning protrusion one, and the middle part tool of the outer peripheral surface of positioning protrusion one
Have bellows distracted annular flange outward, the bundle for tightening bellows lower end is equipped with positioned at the lower position of positioning protrusion one
Band.
In this vacuum interrupter, there are gaps between movable feeler lever and relief hole, in order to guarantee the vacuum degree of vacuum chamber, use
The structure of bellows is set on movable feeler lever, and spring shim compresses in-flanges one by washer, so that in-flanges one and locating slot
Side wall be close to so that the upper end of bellows is fixed on movable feeler lever and the upper end of bellows and the junction of movable feeler lever are formed
The outer diameter of annular flange is set greater than the internal diameter of bellows lower end by sealing, this structure, in this way when the lower end of bellows covers
It is located on positioning protrusion one, annular flange struts the lower end of bellows outward, and the lower end of annular flange and bellows is formed tightly
Cooperation and and at this formed sealing, avoid the lower end of bellows from positioning after tightening additionally by bellows lower end by band
Deviate from protrusion one, guarantees bellows lower end and one stable connection of positioning protrusion, firm, which move down movable feeler lever upper
Bellows is isolated by relief hole with vacuum chamber in dynamic process, forms dynamic sealing, and the equal fix tightly of upper and lower side of bellows
Lean on, sealing effect it is good.
In a kind of above-mentioned vacuum interrupter, the movable feeler lever include the main rod body being slidably arranged in relief hole and with
The upper surface of the connector of main rod body upper end connection, the main rod body has boss, and the upper surface of the boss offers screw thread
Hole, the lower end surface of the connector have a screw rod being screwed onto threaded hole, and the spring shim, washer and in-flanges one are from upper
It is sequentially sleeved on boss under, the lower end surface of the connector is pressed on spring shim.When actual installation, connector and master
The body of rod is in disassembly status, and after in-flanges one, washer and spring shim are sequentially sleeved on boss, the screw rod of connector is inserted into
Screw in threaded hole and inwardly connector, until the lower end surface of connector against and squeeze spring shim, and then guarantee in-flanges
One is close to the upper surface of main rod body, which makes in-flanges one, washer and spring shim installation and removal convenient.
In a kind of above-mentioned vacuum interrupter, sealing ring, the sealing are arranged on the inner peripheral surface of the positioning protrusion
There is the sealing lip mutually to recline with the outer peripheral surface of movable feeler lever on the inner peripheral surface of circle.It is formed between sealing lip and the outer peripheral surface of movable feeler lever
First of dynamic sealing, and the mounting structure of bellows forms second dynamic sealing, therefore, in the vacuum interrupter of this structure
With twice dynamic sealing, sealing effect is improved.
In a kind of above-mentioned vacuum interrupter, the stationary contact bar is connect with case weld.The combination of stationary contact bar and shell
Place guarantees the leakproofness of vacuum chamber using welded seal.
In a kind of above-mentioned vacuum interrupter, the shell includes upper end closed, the cylinder of lower end opening and closing
The lower end of the bottom cover of cylinder lower end, the cylinder has in-flanges two, and the lower surface of the in-flanges two offers annular groove, described
Be embedded with U-shaped circle in annular groove, the upper surface of the bottom cover has a positioning protrusion two mating with U-shaped circle, the bottom cover with
It is connected between in-flanges two by fastener.In the structure, fixed by the installation that setting in-flanges two is used for bottom cover, bottom cover
Crossed after fastener is fixedly connected with in-flanges two-way, the fit structure of positioning protrusion two and U-shaped circle so that the upper surface of bottom cover with
Sealing is formed between the lower surface of in-flanges two, advantageously ensures that the leakproofness of vacuum chamber.
Compared with prior art, the vacuum interrupter of the utility model has the advantage that this structure makes movable feeler lever exist
Bellows is isolated by relief hole with vacuum chamber during moving up and down, and forms dynamic sealing, and the upper and lower side of bellows is equal
It is fixed, sealing effect is good.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the utility model.
Fig. 2 is the enlarged structure schematic diagram in the portion A in Fig. 1.
Fig. 3 is the enlarged structure schematic diagram in the portion B in Fig. 1.
Fig. 4 is the enlarged structure schematic diagram in the portion C in Fig. 1.
In figure, 1, shell；1a, vacuum chamber；1b, relief hole；11, cylinder；11a, in-flanges two；11a1, annular groove；12, bottom
Lid；12a, positioning protrusion one；12a1, annular flange；12b, positioning protrusion two；2, stationary contact bar；3, movable feeler lever；3a, locating slot；
31, main rod body；31a, boss；31a1, threaded hole；32, connector；32a, screw rod；4, bellows；41, in-flanges one；5, it pads
Circle；6, spring shim；7, band；8, sealing ring；8a, sealing lip；9, U-shaped circle；10, fastener；13, arc baffle.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, Figure 2 and Figure 3, this vacuum interrupter, including shell 1, stationary contact bar 2 and dynamic touching with vacuum chamber 1a
The lower end of bar 3, the stationary contact bar 2 extends in vacuum chamber 1a through the top surface of shell 1, offers and allows on the bottom surface of the shell 1
Position hole 1b, the movable feeler lever 3, which slides up and down, to be arranged in relief hole 1b and the upper end of the movable feeler lever 3 extends in vacuum chamber 1a, institute
It states and is arranged with bellows 4 on movable feeler lever 3, cricoid locating slot 3a is offered on the outer peripheral surface of 3 upper end of movable feeler lever, it is described
The upper end of bellows 4 has the in-flanges 1 extended in locating slot 3a, is provided in the locating slot 3a for compressing varus
The washer 5 on side 1 and spring shim 6 for packing washer 5 have cricoid positioning protrusion on the inner bottom surface of the shell 1
The lower end of one 12a, the bellows 4 are set on the outer peripheral surface of one 12a of positioning protrusion, and the periphery of one 12a of positioning protrusion
The middle part in face has the outside distracted annular flange 12a1 of bellows 4, is equipped with and pricks positioned at the lower position of one 12a of positioning protrusion
The band 7 of tight 4 lower end of bellows.In this vacuum interrupter, there are gaps between movable feeler lever and relief hole, in order to guarantee vacuum chamber
Vacuum degree, using on movable feeler lever be arranged bellows structure, spring shim by washer compression in-flanges one so that varus
The side wall of Bian Yiyu locating slot is close to, so that the upper end of bellows is fixed on movable feeler lever and the upper end of bellows and movable feeler lever
Junction form sealing, the outer diameter of annular flange is set greater than the internal diameter of bellows lower end, works as ripple in this way by this structure
The lower end of pipe is set on positioning protrusion one, and annular flange struts the lower end of bellows outward, annular flange and bellows
Lower end formed tight fit and and at this formed sealing, avoid bellows after tightening additionally by bellows lower end by band
Lower end deviate from from positioning protrusion one, guarantee bellows lower end and one stable connection of positioning protrusion, firm, which to move
Feeler lever bellows during moving up and down is isolated by relief hole with vacuum chamber, forms dynamic sealing, and bellows is upper
Lower end is fixed, sealing effect is good.The preferred metal binding belt of band in the present embodiment, the preferred high temperature resistant rubber of washer
Rubber gasket, in practical operation, the bellows is removed in actual mechanical process using being made with a thickness of the stainless steel of 0.1~0.2mm
Outside above-mentioned fixed form, in order to further strengthen the reliability and sealing effect of bellows installation, in the bellows lower end
Wall periphery and the positioning protrusion one carry out annular solder, and the bellows upper end inner wall periphery and movable feeler lever carry out annular welds
It connects.In addition, in the vacuum chamber in the arc baffle 13 of the bellows being fixedly arranged above in a ring, the setting of arc baffle 13
Bellows can be blocked to a certain extent, so that electric arc be avoided to generate injury to bellows.
As shown in Fig. 2, the movable feeler lever 3 include the main rod body 31 that is slidably arranged in relief hole 1b and in main rod body 31
The connector 32 of connection is held, the upper surface of the main rod body 31 has boss 31a, and the upper surface of the boss 31a offers spiral shell
Pit 31a1, the lower end surface of the connector 32 have the screw rod 32a being screwed onto threaded hole 31a1, the spring shim 6, pad
Circle 5 and in-flanges 1 are sequentially sleeved at from top to bottom on boss 31a, and the lower end surface of the connector 32 is pressed on spring shim
On 6.
As shown in figure 3, being arranged with sealing ring 8, the inner circumferential of the sealing ring 8 on the inner peripheral surface of one 12a of positioning protrusion
There is the sealing lip 8a mutually to recline with the outer peripheral surface of movable feeler lever 3, the sealing ring 8 is high-temperature resistant seal ring on face.
As shown in figure 4, the shell 1 includes 11 lower end of upper end closed, the cylinder 11 of lower end opening and closed cylinder
The lower end of bottom cover 12, the cylinder 11 has two 11a of in-flanges, and the lower surface of two 11a of in-flanges offers annular groove 11a1,
U-shaped circle 9 is embedded in the annular groove 11a1, the upper surface of the bottom cover 12 has the positioning protrusion two mating with U-shaped circle 9
It is connected between 12b, two 11a of the bottom cover 12 and in-flanges by fastener 10.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (5)
1. a kind of vacuum interrupter, described quiet including shell (1), stationary contact bar (2) and movable feeler lever (3) with vacuum chamber (1a)
The lower end of feeler lever (2) extends in vacuum chamber (1a) through the top surface of shell (1), offers resigning on the bottom surface of the shell (1)
Hole (1b), the movable feeler lever (3) slides up and down setting in relief hole (1b) and the upper end of the movable feeler lever (3) extends to vacuum chamber
In (1a), bellows (4) are arranged on the movable feeler lever (3), which is characterized in that the outer peripheral surface of movable feeler lever (3) upper end
On offer cricoid locating slot (3a), the upper end of the bellows (4) has the in-flanges one extended in locating slot (3a)
(41), it is provided with the washer (5) for compressing in-flanges one (41) in the locating slot (3a) and is used for the bullet of packing washer (5)
Spring gasket (6) has cricoid positioning protrusion one (12a), the lower end of the bellows (4) on the inner bottom surface of the shell (1)
Portion is set on the outer peripheral surface of positioning protrusion one (12a), and the middle part of the outer peripheral surface of positioning protrusion one (12a) has bellows
(4) outside distracted annular flange (12a1) is equipped with positioned at the lower position of positioning protrusion one (12a) and tightens under bellows (4)
The band (7) at end.
2. a kind of vacuum interrupter according to claim 1, which is characterized in that the movable feeler lever (3) includes sliding setting
Main rod body (31) in relief hole (1b) and the connector (32) being connect with main rod body (31) upper end, the main rod body (31)
Upper surface has boss (31a), and the upper surface of the boss (31a) offers threaded hole (31a1), the connector (32)
Lower end surface has the screw rod (32a) being screwed onto threaded hole (31a1), the spring shim (6), washer (5) and in-flanges one
(41) it is sequentially sleeved at from top to bottom on boss (31a), the lower end surface of the connector (32) is pressed on spring shim (6).
3. a kind of vacuum interrupter according to claim 1, which is characterized in that the inner circumferential of the positioning protrusion one (12a)
Be arranged on face sealing ring (8), have on the inner peripheral surface of the sealing ring (8) mutually recline with the outer peripheral surface of movable feeler lever (3) it is close
It seals lip (8a).
4. a kind of vacuum interrupter according to claim 1, which is characterized in that the stationary contact bar (2) and shell (1) are welded
Connection.
5. a kind of vacuum interrupter according to claim 1, which is characterized in that the shell (1) include upper end closed, under
The bottom cover (12) of open cylinder (11) and closed cylinder (11) lower end is held, the lower end of the cylinder (11) has in-flanges two
The lower surface of (11a), the in-flanges two (11a) offer annular groove (11a1), are embedded with U-shaped circle in the annular groove (11a1)
(9), the upper surface of the bottom cover (12) has the positioning protrusion two (12b) mating with U-shaped circle (9), the bottom cover (12)
It is connect between in-flanges two (11a) by fastener (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729513.6U CN208834976U (en) | 2018-10-24 | 2018-10-24 | A kind of vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821729513.6U CN208834976U (en) | 2018-10-24 | 2018-10-24 | A kind of vacuum interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208834976U true CN208834976U (en) | 2019-05-07 |
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ID=66319605
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821729513.6U Active CN208834976U (en) | 2018-10-24 | 2018-10-24 | A kind of vacuum interrupter |
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| Country | Link |
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| CN (1) | CN208834976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563071A (en) * | 2020-05-22 | 2021-03-26 | 中车青岛四方机车车辆股份有限公司 | Vacuum circuit breaker |
-
2018
- 2018-10-24 CN CN201821729513.6U patent/CN208834976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563071A (en) * | 2020-05-22 | 2021-03-26 | 中车青岛四方机车车辆股份有限公司 | Vacuum circuit breaker |
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