CN101419874B - Sealed travel switch - Google Patents
Sealed travel switch Download PDFInfo
- Publication number
- CN101419874B CN101419874B CN2007100779881A CN200710077988A CN101419874B CN 101419874 B CN101419874 B CN 101419874B CN 2007100779881 A CN2007100779881 A CN 2007100779881A CN 200710077988 A CN200710077988 A CN 200710077988A CN 101419874 B CN101419874 B CN 101419874B
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- China
- Prior art keywords
- base
- post
- travel switch
- pedestal
- contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a seal stroke switch which consists of a tower-form contact system of a seal structure, a pedestal combination, an outer hood, an axle and a guide wheel. One end of a push cylinder and one end of the periphery of a base are respectively manufactured into an interface form suitable for welding; the left end and the right end of a welding sylphon bellows are respectively fused together with the push cylinder and the base by welding, so as to form the seal shell of the stroke switch; L-shaped contact sheets and supporting sheets are overlapped together and are riveted in the annular step hole of the pedestal by rivets; every two mutually symmetrical contact sheets form a contact quadrangle and a tower-form contact system; the middle of the pedestal is provided with a through hole; the pedestal combination and a glass isolator are sintered together by the induction terminal of a basic board; one end of the pedestal combination is welded with a connection terminal and the other end is welded with the induction terminal of the pedestal combination, thus improving the seal performance and the reliability of the stroke switch.
Description
One, technical field
The invention belongs to the switch executing element field, especially belong to a kind of sealed travel switch.
Two, background technology
Along with the develop rapidly of machine system, more and more longer to the requirement of storing the cycle, reliability is more and more higher.This just makes travel switch that former machine system uses owing to do not have sealing requirements, and can't satisfy the instructions for use that its overlength is stored cycle and high reliability.For this reason, the invention provides a kind of sealed travel switch that can be used for machine system, the trip switch has fine melt weldering hermetically-sealed construction, can satisfy the requirement of adverse circumstances and long term storage.
Three, summary of the invention
The purpose of this invention is to provide a kind of travel switch that is used for sense aircraft position and state, the normal conditions lower stroke switch is compressed and is in normally open.In the aircraft flight process, the external force that travel switch is subjected to disappears, and makes the contact be in on-state, provides signal feedback and gives emitter, so that carry out the preparation in a step.
Technical scheme of the present invention is: sealed travel switch is swung etc. by hermetically-sealed construction, tower-form contact system, base combination, outer cover and axle and guiding and is formed.The method that promotion post, welding bellows, base are used welding links together, and constitutes the hermetically-sealed construction of travel switch.The moving contact assembly is installed on the promotion post of hermetically-sealed construction, tightens together by nut.By promotion dish, insulating case and fixed cover spring is fixed between promotion post and the base, constitute " spring one depression bar " system of travel switch, when when promoting post and apply external force and make it produce displacement, promote moving contact assembly compression spring and the welding bellows on it of cornice and move to the base direction.Welded the transition lead-in wire on the binding post of tower-form contact system earlier, the exit that the other end of transition lead-in wire passes on straight cover and the base combination welds together.Pack into then in the base of hermetically-sealed construction, adopt the method for laser fusion welding that the substrate of base combination is welded together with base, the transformational structure of travel switch is sealed in the hermetically-sealed construction, thereby guaranteed the sealing requirements of travel switch.Adopt the beneficial effect of the technical program to be: the invention has the beneficial effects as follows: the connecting portion welded and installed of the travel switch that the present invention relates between kinematic axis and firm banking welding bellows, utilize the sealing that welding bellows itself had and can be compressed characteristic, solved the sealing problem of travel switch.By adopting the tower-form contact system structure of circumference symmetry, constitute the contact quadrangle, solved in the process of travel switch kinematic axis indentation being compressed, the problem that the contacting stroke is long has improved the travel switch vibration resistance, has impacted the ability and the reliability requirement of contour mechanical environment.
Four, description of drawings
Fig. 1 is a sealed travel switch overall structure cutaway view of the present invention;
Fig. 2 is the capable sealed structure chart of sealed travel switch of the present invention;
Fig. 3 is a tower-form contact system structure chart of the present invention;
Fig. 4 is the vertical view of tower-form contact system of the present invention;
Fig. 5 is the switch transition structure chart of sealed travel switch of the present invention.
1-directive wheel among the figure, the little axle of 2-, the 3-axle, the 4-outer cover, 5-promotes post, the 6-spring, the 7-welding bellows, 8-promotion dish, the 9-insulating case, the 10-contact chip, the 11-supporting spring, the 12-fixed cover, the 13-rivet, the 14-base, the 15-screw, 16-directly overlaps, the 17-binding post, the 18-base combination, the 19-insulation spacer, the 20-insulation barrier, the 21-bonnet, 22-transition lead-in wire, the 23-cable, the 24-pedestal, the 25-nut, the 26-plain washer, the 27-external insulation sleeve, the 28-moving contact, insulating case in the 29-, the 30-connector, the 31-substrate, the 32-exit, the 33-glass insulator, 34-circular arc contact site, 35-ring-shaped step hole, the 36-through hole, 37-contacts quadrangle.
Five, embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is described in further detail: a kind of sealed travel switch comprises hermetically-sealed construction, and tower-form contact system, base combination, outer cover and axle and several parts of directive wheel are formed, and Fig. 1 shows overall structure of the present invention.Mainly by directive wheel 1, little axle 2, axle 3, outer cover 4, promote post 5, spring 6, welding bellows 7, promotion dish 8, insulating case 9, contact chip 10, supporting spring 11, fixed cover 12, rivet 13, base 14, screw 15, directly overlap 16, binding post 17, base combination 18, insulation spacer 19, insulation barrier 20, bonnet 21, transition lead-in wire 22, cable 23, pedestal 24, nut 25, plain washer 26, external insulation sleeve 27, moving contact 28, interior insulating case 29 and connector 30 etc. form.Directive wheel 1 is riveted on the axle 3 by little axle 2, and directive wheel 1 can rotate around little axle 2.Axle 3 stretches into outer cover 4 backs and links to each other with promotion post 5.Interior insulating case 29, moving contact 28, external insulation sleeve 27, plain washer 26, be enclosed within respectively and promote to be fixed together by nut 25 on the post 5 successively, constitute the moving part of switch contact system.The right-hand member of spring 6 places in the annular groove that promotes on the post 5, and left end places on the promotion dish 8, is fixed on the base 14 by fixed cover 12 by insulating case 9.Welding bellows 7 right-hand members and left end are welded together it with promotion post 5 and base 14 by welding method respectively.Supporting spring 11 is folded back being riveted on the pedestal 24 and with binding post 17 by rivet 13 with contact chip 10 and is linked to each other.Binding post 17 links to each other with the exit of base combination 18 by transition lead-in wire 22.Straight cover 16 has increased the displacement that promotes post 5 motions between pedestal 24 and base combination 18.Being connected between base combination 18 and the base 14 adopted the laser fusion welding sealing.By base combination 18, base 14, welding bellows 7 and promotion post 5 have just constituted the hermetically-sealed construction of travel switch.Directive wheel 1 is subjected to external force to do the time spent, compressing spring 6 left by axle 3 drive promotion posts 5 makes the moving contact 28 that is contained on the promotion post slide along contact chip 10, after the contact that slips over regulation disconnects stroke, moving contact 28 disconnects with contact chip 10, continue compression directive wheel 1 and make axle 3 indentations, moving contact 28 also has certain movement travel, until whole impulse strokes of finishing travel switch, is in off-state between the contact of travel switch at this moment always.After external force disappeared, because the counter-force effect of spring 6 promotes post 5 and gets back to original state together with axle 3, this moment, the contact of travel switch returned to on-state.The signal of travel switch is by cable 23 and connector 30 outputs.
Fig. 2 is the sealed structure chart of the sealed travel switch that the present invention relates to.An end that promotes post 5, base 14 cylindricals is made the interface shape that is suitable for welding respectively, and welding bellows 7 right-hand members and left end are welded together it with promoting post 5 and base 14 by welding method respectively, constitute the seal casinghousing of travel switch.
Fig. 3 is the contact system structure chart that the present invention relates to, the vertical view that Fig. 4 is Fig. 3.L shaped contact chip 10 front ends are bent to the contact site 34 of circular arc, overlap with L shaped supporting spring 11, are riveted in the belt stepped hole 35 on the pedestal 24 by rivet 13, and draw by exit 17.The contact chip of arranging symmetrically 10 has just formed a contact quadrangle 37 in twos.The two ends of pedestal 24 respectively are processed with a ring-shaped step hole 35 respectively, and the centre is a through hole 36, and the effect of through hole 36 is to be used for providing working space for the movement travel of travel switch, and the promotion post 5 that makes travel switch is unlikely when work to be blocked by pedestal 24.
Fig. 5 is the switch transition structure chart of the sealed travel switch that the present invention relates to.Interior insulating case 29, moving contact 28, external insulation sleeve 27, plain washer 26 is enclosed within successively respectively and promotes to be fixed together by nut 25 on the post 5.Spring 6, promotion dish 8, insulating case 9 backs of packing into are fixed on spring 6 by fixed cover 12 and promote between post 5 and the base 14.Base combination 18 is in the same place through glass sintering by substrate 31, exit 32 and glass insulator 33.Transition goes between after 22 1 ends and binding post 17 connect by being weldingly connected, the straight cover 16 of packing into, and the exit 32 of the other end and base combination 18 is by being welded to connect.Contact system is pressed in the hole of base 14 together with base combination 18, and after guaranteeing substrate 31 and base 14 apertures being concordant, by laser fusion welding base 14 and substrate 31 is linked together, and has guaranteed the sealing requirements of travel switch thus.
Claims (5)
1. sealed travel switch, comprise hermetically-sealed construction, the switch contact system, base combination, outer cover and axle and directive wheel, its overall structure is by directive wheel (1), little axle (2), axle (3), outer cover (4), promote post (5), spring (6), welding bellows (7), promotion dish (8), insulating case (9), L shaped contact chip (10), L shaped supporting spring (11), fixed cover (12), rivet (13), base (14), screw (15), straight cover (16), binding post (17), base combination (18), insulation spacer (19), isolation baffle plate (20), bonnet (21), transition lead-in wire (22), cable (23), pedestal (24), nut (25), plain washer (26), external insulation sleeve (27), moving contact (28), interior insulating case (29) and connector (30) are formed, it is characterized in that: directive wheel (1) is riveted on the axle (3) by little axle (2), directive wheel (1) can rotate around little axle (2), axle (3) stretches into outer cover (4) back and links to each other with promotion post (5), interior insulating case (29), moving contact (28), external insulation sleeve (27), plain washer (26) is enclosed within promotion post (5) successively respectively and upward is fixed together by nut (25), constitutes the movable part of switch contact system; The right-hand member of spring (6) places in the annular groove that promotes on the post (5), and left end places on the promotion dish (8), is fixed on the base (14) by fixed cover (12) by insulating case (9); Welding bellows (7) right-hand member and left end are welded together it with promotion post (5) and base (14) by welding respectively; L shaped supporting spring (11) is riveted on pedestal (24) with the overlapping back of L shaped contact chip (10) by rivet (13) and upward and with binding post (17) links to each other, binding post (17) links to each other with the exit of base combination (18) by transition lead-in wire (22), straight cover (16) increases the displacement that promotes post (5) motion between pedestal (24) and base combination (18), by base combination (18), base (14), welding bellows (7) and promotion post (5) constitute the hermetically-sealed construction of travel switch.
2. sealed travel switch as claimed in claim 1, it is characterized in that: L shaped contact chip (10) is riveted in the ring-shaped step hole (35) on the pedestal (24) by rivet (13) with L shaped supporting spring (11) is overlapping in the switch contact system, and draw by exit (32), the L shaped contact chip of arranging symmetrically (10) has formed a contact quadrangle (37) in twos, the two ends of pedestal (24) respectively are processed with a ring-shaped step hole (35) respectively, the centre is a through hole (36), through hole (36) is to be used for providing working space for the movement travel of travel switch, and the promotion post (5) that makes travel switch is unlikely when work to be blocked by pedestal (24).
3. sealed travel switch as claimed in claim 1, it is characterized in that: interior insulating case (29), moving contact (28), external insulation sleeve (27), plain washer (26), being enclosed within promotion post (5) successively respectively upward is fixed together by nut (25), the spring (6) of packing into, promotion dish (8), insulating case (9) back is fixed on spring (6) by fixed cover (12) and promotes between post (5) and the base (14), base combination (18) is by substrate (31), exit (32) and glass insulator (33) are through glass sintering together, transition lead-in wire (22) one ends are after connecing by being weldingly connected with binding post (17), pack into and directly overlap (16), the exit (32) of the other end and base combination (18) is by being welded to connect.
4. sealed travel switch as claimed in claim 1, it is characterized in that: the switch contact system is pressed in the hole of base (14) together with base combination (18), and after guaranteeing substrate (31) and base (14) aperture being concordant, by laser fusion welding base (14) and substrate (31) are linked together, guaranteed the sealing requirements of travel switch thus.
5. sealed travel switch as claimed in claim 2 is characterized in that: the front end contact site of the L shaped contact chip (10) of switch contact system bends to circular arc (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100779881A CN101419874B (en) | 2007-10-27 | 2007-10-27 | Sealed travel switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100779881A CN101419874B (en) | 2007-10-27 | 2007-10-27 | Sealed travel switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101419874A CN101419874A (en) | 2009-04-29 |
| CN101419874B true CN101419874B (en) | 2011-08-10 |
Family
ID=40630623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100779881A Expired - Fee Related CN101419874B (en) | 2007-10-27 | 2007-10-27 | Sealed travel switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101419874B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950617A (en) * | 2010-08-25 | 2011-01-19 | 贵州航天电器股份有限公司 | Tower-shaped lift stretching and shrinking cable |
| CN102629528B (en) * | 2012-04-14 | 2014-06-18 | 桂林航天电子有限公司 | Clapping contact travel switch |
| CN102623200B (en) * | 2012-04-14 | 2014-08-20 | 桂林航天电子有限公司 | Multichannel sliding type contact transfer switch |
| CN108155036A (en) * | 2017-12-22 | 2018-06-12 | 贵州航天电器股份有限公司 | A kind of force transmission mechanism for miniature airtight sealing switch |
| CN109192588B (en) * | 2018-09-20 | 2020-08-11 | 贵州航天电器股份有限公司 | Travel switch with multiple signals |
| CN109119261B (en) * | 2018-09-20 | 2020-04-28 | 贵州航天电器股份有限公司 | Travel switch contactor with multi-path signals |
| CN110571072B (en) * | 2019-08-23 | 2021-08-17 | 贵州航天电器股份有限公司 | Small travel switch with locking function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045657A (en) * | 1989-02-23 | 1991-09-03 | Daimler-Benz Ag | Actuating device for the mechanical positive actuation of a pressure-response switch |
| CN2689435Y (en) * | 2004-03-30 | 2005-03-30 | 惠州惠达电子有限公司 | Press switch structure |
| CN2922184Y (en) * | 2006-03-23 | 2007-07-11 | 贵州航天电器股份有限公司 | Rectangular electrical connector |
-
2007
- 2007-10-27 CN CN2007100779881A patent/CN101419874B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045657A (en) * | 1989-02-23 | 1991-09-03 | Daimler-Benz Ag | Actuating device for the mechanical positive actuation of a pressure-response switch |
| CN2689435Y (en) * | 2004-03-30 | 2005-03-30 | 惠州惠达电子有限公司 | Press switch structure |
| CN2922184Y (en) * | 2006-03-23 | 2007-07-11 | 贵州航天电器股份有限公司 | Rectangular electrical connector |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-149847A 1999.06.02 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101419874A (en) | 2009-04-29 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20201027 |