CN102568873A - High temperature resistant travel switch - Google Patents
High temperature resistant travel switch Download PDFInfo
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- CN102568873A CN102568873A CN2010105877793A CN201010587779A CN102568873A CN 102568873 A CN102568873 A CN 102568873A CN 2010105877793 A CN2010105877793 A CN 2010105877793A CN 201010587779 A CN201010587779 A CN 201010587779A CN 102568873 A CN102568873 A CN 102568873A
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- probe
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- high temperature
- base
- travel switch
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Abstract
The invention discloses a high temperature resistant travel switch. A compression spring positioning rod is fixed at the center of a bottom plate of a base group; a plurality of pairs of base contacts are distributed in a central symmetry way; a button is arranged at the upper part of a button group frame of the button group, a positioning cylinder and spring probes corresponding to the base contacts are arranged at the lower part of the button group frame of the button group, a probe sleeve of each spring probe is fixed on the button group frame; and a probe compression spring is positioned in the probe sleeve, and the probe contacts are fixed at the lower end of the probe compression spring. A positioning rod and the compression spring are inserted in the positioning cylinder, and a pair of leading rods is connected below each pair of base contacts. The base group and the button group are arranged in a shell, and the button extends out from a hole at the top of the shell. According to the high temperature resistant travel switch, the switch normally opens in a free state, when the button is pressed, the probe contacts are connected with plurality of pairs of base contacts, and the probe compression spring can ensure the stable and reliable connection. The probe contacts can ensure the reliable connection when the switch is switched on, and the travel switch can bear high temperature of 600 DEG C and can work normally under the high random vibration; the contacts of the switch is free from rigid contact, so that the service life is long; and the travel switch can ensure the smooth movement at high temperature in fit clearance, has a compact structure and is strong in expandability and simple and convenient in assembly and adjustment.
Description
(1) technical field
The present invention relates to the electric device travel switch, be specially a kind of high temperature resistant travel switch that adapts to 600 degree high temperature and high random vibration environment.
(2) background technology
Travel switch is claimed position switch or limit switch again, and its effect is to change mechanical displacement into the signal of telecommunication, and motoring is changed, promptly by certain stroke automatic stopping, and counter-rotating, speed change or circulation, thereby control mechanical movement or realization safeguard protection.Dissimilar travel switches all will be widely used in the automatic control system of industry-by-industry.
For satisfying different occasion instructions for uses; Developed the travel switch of multiple series; Resistant to elevated temperatures travel switch has roller arms type, adjustable rod type, compression leg plug and roller compression leg type etc. now, its inner exotic material that adopts, the contact through after the special processing in case under hot environment operate as normal.
But existing high temperature resistant travel switch generally can only adapt to 200～400 ℃ environment, if also have high random vibration simultaneously, just is difficult to bear, and not only switch is easy to damage, and switch bite or stuck fault also can take place, and influences the safe operation of system.
(3) summary of the invention
The objective of the invention is to design a kind of high temperature resistant travel switch, its combination button adopts the new construction of spring probe, compact in design; The contact contact is reliable; High temperature resistant strong with the endurance environment capacity.
The high temperature resistant travel switch of the present invention's design comprises base group and the button groups that cooperates with it; The base group comprises base plate and 2～8 pairs of base contact; The base group base plate center fixation of this programme has vertical with it combined setting lever jumper, and 2～8 pairs of base contact are that the center is symmetrically distributed with the combined setting lever jumper; Button groups comprises that button groups frame, button, positioning tube reach and corresponding 2～8 spring probes of base contact; Button is positioned at center, button groups frame top; Positioning tube is positioned at center, button groups frame below; It is relative one by one with base contact that the central lines of button and positioning tube, 2～8 spring probes are positioned at button groups frame below, and the center line of each spring probe is parallel with the center line of positioning tube.Each spring probe comprises probe sleeve, probe stage clip and probe contacts.Button groups frame below is fixed in probe sleeve upper end, and the probe stage clip is positioned at the probe sleeve, and its upper end is connected with the probe sleeve lining, probe stage clip lower end stationary probe contact.Distance between the central lines of the center line of probe stage clip and probe contacts and probe sleeve, the every pair of base contact outer rim is less than the diameter of probe contacts bottom surface.The probe contacts bottom surface is lower than probe sleeve lower surface.Be with stage clip on the combined setting lever jumper of base, combined setting lever jumper and stage clip insert in the positioning tube of button groups together, and the stage clip upper end is butted on positioning tube inwall top, the lower end is butted on base plate.Each probe contacts is in directly over the corresponding base contact.
For guarantee that probe contacts moves on the center line of probe sleeve; Probe sleeve lining top is fixed with the probe combined setting lever jumper of the central lines of center line and probe sleeve, the probe compression spring sleeve on the probe combined setting lever jumper, probe stage clip upper end is connected with the probe combined setting lever jumper.The length of probe combined setting lever jumper is less than the length of probe sleeve.
The distance B of positioning tube bottom and base plate is 5～8 millimeters under the free state.Between base contact and the probe contacts apart from d less than D1～2 millimeter.
Connect a pair of leading-off rods under every pair of base contact, leading-off rods passes base plate, draws from floor below.
Base group and button groups place in the housing, and the base plate of base group is fixedly connected with housing bottom, and button stretches out from the case top hole, and leading-off rods is drawn from housing bottom.The fixed connection sheet is arranged on the housing, be used for this switch is fixed in the position of application.
Smooth and easy in order to guarantee elevated temperature heat expansion back action, the fit clearance between button and the case top hole is 0.15mm～0.2mm.
During use, button is not stressed, and this stroke switch keeps normally open; Pressing button, button groups moves down, and each probe contacts bottom surface touches base contact earlier; Button groups continues to move down, and the probe stage clip is compressed, and when the positioning tube bottom touches base plate, button is promptly limited, and each probe contacts bottom surface is pressed in a pair of base contact and makes 2 contactings, and switch is in closure state.The probe stage clip is pressed in the probe contacts bottom surface on the base contact, guarantees to connect reliable and stable.
Rotate in order to prevent button groups; Influencing probe contacts contacts with the accurate of base contact; At least one side of button groups frame has the gathering sill with its center line parallel, and corresponding guiding rib is arranged on the inner walls, and the guiding rib on the inner walls snaps in the gathering sill of button groups frame; The two cooperates effective call-on button group to move along the direction of button center line, prevents that button groups from rotating in housing.
The advantage of the high temperature resistant travel switch of the present invention is: 1, adopt unique probe contacts structure, connection reliability is high when guaranteeing closure, switch is possessed bear at least 40 minutes abilities of high temperature of 600 ℃, and can satisfy 0.39g
2Operate as normal under the high random vibration of/Hz; 2, the structure of probe contacts can avoid probe contacts to contact with the rigidity of base contact, collisionless or friction between the contact, the useful life of improving switch; 3, select for use titanium alloy material, ceramic post sintering to make and guarantee that construction of switch intensity is good, in light weight, heat-resisting quantity is excellent; 4, considered the factor that elevated temperature heat expands, fit clearance is selected suitably both to have guaranteed that the cooperation of switch was tight under the normal temperature, has guaranteed that again action is smooth and easy under the high temperature, avoids occurring bite or stuck fault; 5, automatic spacing structure has avoided overvoltage to damage switch; 6, the inner anti-rotation device of switch guarantees the smooth and easy action of direction that the button of switch can be according to the rules; 7, button groups and base group compact conformation, integrated degree height, structure is directly perceived, and extensibility is strong, debugs easy.
(4) description of drawings
Fig. 1 is the overall structure sketch map of this high temperature resistant travel switch embodiment;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is a base group structure for amplifying sketch map among Fig. 1;
Fig. 4 amplifies the right side for base group among Fig. 1 and looks sketch map;
Fig. 5 is the amplification assumption diagram of button groups among Fig. 1;
The figure internal label is: 1, housing, 2, button groups, 21, spring probe, 211, the probe sleeve, 212, the probe stage clip; 213, probe combined setting lever jumper, 214, probe contacts, 22, button, 23, positioning tube; 24, button groups frame, 25, button groups frame sintered ceramic, 3, the base group, 31, base plate; 32, combined setting lever jumper, 33, base contact, 34, base plate sintered ceramic, 35, leading-off rods, 4, stage clip.
(5) embodiment
This high temperature resistant travel switch comprises base group 3 and the button groups 2 that cooperates with it like Fig. 1, shown in 2, and there is housing 1 its outside.
Distance between every pair of base contact 33 outer rim is less than the diameter of probe contacts 214 bottom surfaces.
Be with stage clip 4 on the combined setting lever jumper 32 of base group 3, combined setting lever jumper 32 inserts in the positioning tube 23 of button groups 2 with stage clip 4 together, and the stage clip upper end is butted on positioning tube inwall top, the lower end is butted on base plate.Each probe contacts is in directly over the corresponding base contact.The length of probe combined setting lever jumper 213 is less than the length of probe sleeve 21.
The distance B of positioning tube 23 bottoms and base plate 31 is 7 millimeters under the free state.
Between base contact 33 and the probe contacts 214 is 5 millimeters apart from d.
Fit clearance between button 22 and housing 1 top-portion apertures is 0.2mm.
There is the gathering sill with its center line parallel button groups frame 24 both sides; Corresponding 2 guiding ribs are arranged on housing 1 inwall; Guiding rib on housing 1 inwall snaps in the gathering sill of button groups frame 24; The two cooperates call-on button group 2 to move along the direction of button 22 center lines, prevents that button groups 2 from rotating housing 1 in, contacts with the accurate of base contact 33 with guarantor's probe contacts 214.
During use, button 22 is not stressed, and this stroke switch keeps normally open; Pressing button 22, button groups 2 moves down, and each probe contacts 214 bottom surface touches base contact 33 earlier; Button groups 2 continues to move down, and probe stage clip 212 is compressed, and when positioning tube 23 bottoms touch base plate 31, promptly limited, switch is in closure state.Probe stage clip 212 is pressed in probe contacts 212 bottom surfaces on the base contact 33, guarantees to connect reliable and stable.When pressing button 22 no longer, the spring force of stage clip 4 moves positioning tube 23 top upwards on the button groups 2, and travel switch recovers normally open.
The foregoing description is merely concrete example to the object of the invention, technical scheme and beneficial effect further explain, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, being made, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (10)
1. high temperature resistant travel switch comprises base group (3) and the button groups (2) that cooperates with it, and base group (3) comprises base plate (31) and 2～8 pairs of base contact (33), it is characterized in that:
Base plate (31) center fixation of said base group (3) has vertical with it combined setting lever jumper (32), and 2～8 pairs of base contact (33) are that the center is symmetrically distributed with combined setting lever jumper (32); Button groups (2) comprises that button groups frame (24), button (22), positioning tube (23) reach and corresponding 2～8 spring probes of base contact (33) (31); Button (22) is positioned at center, button groups frame (24) top; Positioning tube (23) is positioned at center, button groups frame (24) below; The central lines of button (22) and positioning tube (23); 2～8 spring probes (21) are positioned at button groups frame (24) below, relative one by one with base contact (33), and the center line of each spring probe (21) is parallel with the center line of positioning tube (23); Each spring probe (21) comprises probe sleeve (211), probe stage clip (212) and probe contacts (214); Button groups frame (24) below is fixed in probe sleeve (211) upper end; Probe stage clip (212) is positioned at probe sleeve (211); Its upper end is connected with probe sleeve (211) inwall, probe stage clip (212) lower end stationary probe contact (214); The central lines of the center line of probe stage clip (212) and probe contacts (214) and probe sleeve (211), the distance between every pair of base contact (33) outer rim are less than the diameter of probe contacts (214) bottom surface, and probe contacts (214) bottom surface is lower than probe sleeve (211) lower surface; Be with stage clip (4) on the combined setting lever jumper (32) of base group (3), combined setting lever jumper (32) and stage clip (4) insert in the positioning tube (23) of button groups (2) together, and stage clip (4) upper end is butted on positioning tube (23) inwall top, the lower end is butted on base plate (31); Each probe contacts (214) is in directly over the corresponding base contact (33).
2. high temperature resistant travel switch according to claim 1 is characterized in that:
Said probe sleeve (211) inwall top is fixed with probe combined setting lever jumper (213); The central lines of the center line of probe combined setting lever jumper (213) and probe sleeve (211); Probe stage clip (212) is enclosed within on the probe combined setting lever jumper (213), probe stage clip (212) upper end is connected with probe combined setting lever jumper (213), and the length of probe combined setting lever jumper (213) is less than the length of probe sleeve (211).
3. high temperature resistant travel switch according to claim 1 and 2 is characterized in that:
The distance B of (23) bottom of positioning tube under the free state and base plate (31) is 5～8 millimeters; Between base contact (33) and the probe contacts (214) apart from d less than D1～2 millimeter.
4. high temperature resistant travel switch according to claim 1 and 2 is characterized in that:
Said probe sleeve (21) is fixed in button groups frame (24) through button groups frame sintered ceramic (25).
5. high temperature resistant travel switch according to claim 1 and 2 is characterized in that:
Connect a pair of leading-off rods (35) under every pair of base contact (33), leading-off rods (35) passes base plate (31), draws from base plate (31) below.
6. high temperature resistant travel switch according to claim 5 is characterized in that:
Said leading-off rods (35) is fixedly connected with base plate (31) through base plate sintered ceramic (34).
7. high temperature resistant travel switch according to claim 1 and 2 is characterized in that:
Said base group (3) and button groups (2) place in the housing (1), and the base plate (31) of base group (3) is fixedly connected with housing (1) bottom, and button (22) stretches out from housing (1) top-portion apertures.
8. high temperature resistant travel switch according to claim 7 is characterized in that:
Fit clearance between said housing (1) top-portion apertures and the button (22) is 0.15mm～0.2mm.
9. high temperature resistant travel switch according to claim 7 is characterized in that:
At least one side of said button groups frame (24) has the gathering sill with its center line parallel, on housing (1) inwall corresponding guiding rib is arranged, and the guiding rib on housing (1) inwall snaps in the gathering sill of button groups frame (24).
10. high temperature resistant travel switch according to claim 7 is characterized in that:
Said housing has the fixed connection sheet on (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010587779.3A CN102568873B (en) | 2010-12-14 | 2010-12-14 | High temperature resistant travel switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010587779.3A CN102568873B (en) | 2010-12-14 | 2010-12-14 | High temperature resistant travel switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102568873A true CN102568873A (en) | 2012-07-11 |
| CN102568873B CN102568873B (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010587779.3A Active CN102568873B (en) | 2010-12-14 | 2010-12-14 | High temperature resistant travel switch |
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| Country | Link |
|---|---|
| CN (1) | CN102568873B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0545852U (en) * | 1991-11-20 | 1993-06-18 | オムロン株式会社 | Limit switch structure |
| US5512717A (en) * | 1993-09-17 | 1996-04-30 | Alps Electric Co., Ltd. | Plunger switch |
| JPH11213789A (en) * | 1998-01-22 | 1999-08-06 | Tokai Rika Co Ltd | Apparatus for supplying electric power to door |
| JP2003059371A (en) * | 2001-08-14 | 2003-02-28 | Omron Corp | Limit switch |
| CN1525505A (en) * | 2003-09-18 | 2004-09-01 | 上海交通大学 | Cable protector for robot |
| US20060137965A1 (en) * | 2004-12-27 | 2006-06-29 | Matsushita Electric Industrial Co., Ltd. | Push-type vehicle switch |
| CN201868259U (en) * | 2010-12-14 | 2011-06-15 | 桂林航天电子有限公司 | High-temperature-resistant stroke switch |
-
2010
- 2010-12-14 CN CN201010587779.3A patent/CN102568873B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0545852U (en) * | 1991-11-20 | 1993-06-18 | オムロン株式会社 | Limit switch structure |
| US5512717A (en) * | 1993-09-17 | 1996-04-30 | Alps Electric Co., Ltd. | Plunger switch |
| JPH11213789A (en) * | 1998-01-22 | 1999-08-06 | Tokai Rika Co Ltd | Apparatus for supplying electric power to door |
| JP2003059371A (en) * | 2001-08-14 | 2003-02-28 | Omron Corp | Limit switch |
| CN1525505A (en) * | 2003-09-18 | 2004-09-01 | 上海交通大学 | Cable protector for robot |
| US20060137965A1 (en) * | 2004-12-27 | 2006-06-29 | Matsushita Electric Industrial Co., Ltd. | Push-type vehicle switch |
| CN201868259U (en) * | 2010-12-14 | 2011-06-15 | 桂林航天电子有限公司 | High-temperature-resistant stroke switch |
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| Publication number | Publication date |
|---|---|
| CN102568873B (en) | 2015-04-08 |
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