CN201608087U - Anti-explosion key switch - Google Patents
Anti-explosion key switch Download PDFInfo
- Publication number
- CN201608087U CN201608087U CN2009202688735U CN200920268873U CN201608087U CN 201608087 U CN201608087 U CN 201608087U CN 2009202688735 U CN2009202688735 U CN 2009202688735U CN 200920268873 U CN200920268873 U CN 200920268873U CN 201608087 U CN201608087 U CN 201608087U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- switch
- explosion
- cover plate
- switch base
- Prior art date
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
- H01H27/06—Key inserted and then turned to effect operation of the switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H9/042—Explosion-proof cases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/50—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model relates to an anti-explosion key switch, which has the advantages of simple structure, low cost, reliable service and convenient operation. The anti-explosion key switch adopts the technical scheme that a switch seat and a cover plate are included, wherein a switch key cylinder and a rotating shaft which are mutually connected are arranged in the switch seat; the output end of the rotating shaft penetrates the cover plate and extends out of the switch seat; and a microswitch matched with the output end of the rotating shaft is mounted on the cover plate. The anti-explosion key switch is characterized in that the input end of the rotating shaft is mounted on the switch seat through the copper sleeve of an outer sleeve, the gaps between the copper sleeve and the rotating shaft and between the copper sleeve and the switch seat are smaller than 0.2 mm, the lengths of the gaps are larger than 12.5 mm and smaller than 30 mm, a notch is formed on the end surface at the output end of the rotating shaft, a roller in contact with the longitudinal section of the notch is arranged on one side of the power end of an elastic rod mounted on the microswitch, and the other side thereof is in contact with a movable contact. The anti-explosion key switch is mainly suitable for anti-explosion vehicles in various environments with explosive gases.
Description
Technical field
The utility model relates to a kind of explosion-proof key switch.Mainly be applicable to the explosion-proof vehicle under the various explosive gas atmospheres.
Background technology
Key switch is a kind of requisite electric component that starts vehicle operation, yet in containing the various working trucks of explosive gas mixture, common key switch can't use at all, explosion-proof key switch does not also have formal commodity selling at present simultaneously, some drives a cover leverage break-make homemade contact realization by the normal key switch to present explosion-proof vehicle with key switch, the complex structure heaviness very easily produces fault; Some need could start vehicle by several actions, operation inconvenience.
Summary of the invention
The technical problems to be solved in the utility model is: at the problem of above-mentioned existence provide a kind of simple in structure, cost is low, reliable operation, easy to operate explosion-proof key switch.
The technical scheme that the utility model adopted is: explosion-proof key switch, have switch base and cover plate, establish interconnective switch lock core and rotating shaft in the described switch base, the rotating shaft output passes cover plate and extends the switch base outside, the sensitive switch that matches with the rotating shaft output is installed on the cover plate, it is characterized in that: described rotating shaft input is installed on the switch base by the copper sheathing of overcoat, copper sheathing respectively with rotating shaft, space between the switch base is less than 0.2mm, and the length in this space is greater than 12.5mm, less than 30mm, have breach on the end face of described rotating shaft output, be installed in one side setting of elastic rod power end and the contacted roller of the vertical tangent plane of breach on the sensitive switch, elastic rod power end opposite side contacts with moving contact.
Described rotating shaft middle part is greater than rotating shaft diameter and integrated with it disk, in the space between this disk flush switch seat and the cover plate, offers two pits on this disk one side end face, offers blind hole accordingly on switch base, places spring and steel ball in the hole.
Install and the axisymmetric alignment pin of blind hole on the described switch base, offer the fluting that matches with alignment pin on the disk, alignment pin rotating maximum angle in fluting is identical with respect to the angle of disc axis with two pits.
Connect by the draw-in groove structure between described switch lock core and the rotating shaft.
The beneficial effects of the utility model are: the utility model shaft input is installed on the switch base by the copper sheathing of overcoat, copper sheathing respectively and the space between the rotating shaft, switch base less than 0.2mm, and the length in this space is greater than 12.5mm, less than 30mm, thereby the explosive flame that has effectively prevented explosive gas mixture reaches the outside by the slit between each parts of switch, utilize common key switch and sensitive switch can realize the explosion prevention function of system, not only simple in structure, easy to operate but also cost is low, easy to maintenance.
Description of drawings
Fig. 1 is a main cutaway view of the present utility model.
Fig. 2 is a vertical view of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, present embodiment has switch base 2 and cover plate 6, establish interconnective switch lock core 1 and rotating shaft 7 in the described switch base 2, connect by the draw-in groove structure between switch lock core 1 and the rotating shaft 7 in this example, make that rotating shaft 7 can next plays rotation in the effect of switch lock core 1; Rotating shaft 7 outputs pass cover plate 6 and extend switch base 2 outsides, the sensitive switch 9 that matches with rotating shaft 7 outputs is installed on the cover plate 6, described rotating shaft 7 inputs are installed on the switch base 2 by the copper sheathing 5 of overcoat, copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 be 0.1mm, and the length in this space is 25mm, because this space is very little, length is grown (than the space of 0.1mm) simultaneously, thereby can prevent effectively that explosive flame from reaching the outside, to reach explosion-proof effect; Have breach 14 on the end face of described rotating shaft 7 outputs, be installed in elastic rod 16 power ends, one side setting and the contacted roller 15 of breach 14 vertical tangent planes on the sensitive switch 9, elastic rod 16 power end opposite sides contact with moving contact 17.
Described rotating shaft 7 middle parts are greater than rotating shaft 7 diameters and integrated with it disk 10, in the space between this disk flush switch seat 2 and the cover plate 6, make that rotating shaft 7 only can be around its rotational, on this disk one side end face, offer two pits 11, on switch base 2, offer blind hole 12 accordingly, place spring 3 and steel ball 4 in the hole, when arrival is switched on or switched off the position, steel ball 4 enters in the pit 11 under spring 3 self elastic force effect, thereby realizes the excellent handle of driver to the break-make position.
Install and blind hole 12 axisymmetric alignment pins 8 on the described switch base 2, offer the fluting 13 that matches with alignment pin 8 on the disk 10, alignment pin 8 rotating maximum angle in fluting 13 is identical with respect to the angle in disk 10 axle center with two pits 11.When arrival was switched on or switched off the position, alignment pin 8 also arrived two extreme positions of fluting 13 simultaneously respectively, prevents to operate excessive.
The operation principle of present embodiment is: when present embodiment uses in reality, need be in explosion-proof instrument box 18 with its integral installation, be connected by screw between switch base 2 and the explosion-proof instrument box 18, and space between the two is 0.1mm, the length in this space is 25mm, promptly with copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 require identical, to reach explosion-proof effect.When switch was in off-state, steel ball 4 was positioned at one of them pit 11, and alignment pin 8 is near fluting one side positive stop end simultaneously; During concrete work, key is inserted in the switch lock core 1, key drives rotating shaft 7 and rotates, make roller 15 move on the outer circumference surface of rotating shaft 7 from breach 14, deformation takes place elastic rod 16 draws close to sensitive switch 9 bodies, thereby promotes moving contact 17 actions, realizes the connection of power supply, utilize copper sheathing 5 respectively and between the rotating shaft 7, switch base 2, and the elongated spaces between switch base 2 and the explosion-proof instrument box 18 realize the flame proof of system; Simultaneously, steel ball 4 enters in another pit 11, can not only realize the excellent handle of driver to the break-make position, and it is motionless to remain on this position, and alignment pin 8 prevents to operate excessive near the opposite side positive stop end.When needing to stop working off switch, the reverse rotation key, make rotating shaft 7 reverse rotations, roller 15 moves on the breach 14 from the outer circumference surface of rotating shaft 7, elastic rod 16 resets under self elastic force effect, promptly to moving away from sensitive switch 9 body directions, moving contact 17 resets under self elastic force effect simultaneously, realizes the disconnection of power supply.
Embodiment 2: present embodiment concrete structure and operation principle are substantially the same manner as Example 1, and its difference is, copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 be 0.05mm, and the length in this space is 15mm.
Embodiment 3: present embodiment concrete structure and operation principle are substantially the same manner as Example 1, and its difference is, copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 be 0.15mm, and the length in this space is 28mm.
Embodiment 4: present embodiment concrete structure and operation principle are substantially the same manner as Example 1, and its difference is, copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 be 0.08mm, and the length in this space is 20mm.
Embodiment 5: present embodiment concrete structure and operation principle are substantially the same manner as Example 1, and its difference is, copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 be 0.02mm, and the length in this space is 13mm.
By the foregoing description as can be known, when copper sheathing 5 respectively and the space between the rotating shaft 7, switch base 2 more hour, be copper sheathing 5 respectively with rotating shaft 7, switch base 2 between cooperate tight more, the length in this space can be short more (must greater than 12.5mm, less than 30mm), the volume that is switch base 2 is more little, thereby has reduced the volume of whole flame-proof switch.Certainly, under some requires extremely rigorous environment, in order further to increase the fail safe of flame-proof switch, can guarantee copper sheathing 5 respectively and under the enough little situation in the space between the rotating shaft 7, switch base 2, the length that remains this space is grown (must greater than 12.5mm, less than 30mm).
Claims (4)
1. explosion-proof key switch, have switch base (2) and cover plate (6), establish interconnective switch lock core (1) and rotating shaft (7) in the described switch base (2), rotating shaft (7) output passes cover plate (6) and extends switch base (2) outside, cover plate (6) is gone up the sensitive switch (9) that matches with rotating shaft (7) output is installed, it is characterized in that: described rotating shaft (7) input is installed on the switch base (2) by the copper sheathing (5) of overcoat, copper sheathing (5) respectively with rotating shaft (7), space between the switch base (2) is less than 0.2mm, and the length in this space is greater than 12.5mm, less than 30mm, have breach (14) on the end face of described rotating shaft (7) output, be installed in one side setting of elastic rod (16) power end and the vertical contacted roller of tangent plane (15) of breach (14) on the sensitive switch (9), elastic rod (16) power end opposite side contacts with moving contact (17).
2. explosion-proof key switch according to claim 1, it is characterized in that: described rotating shaft (7) middle part is greater than rotating shaft (7) diameter and integrated with it disk (10), in the space between this disk flush switch seat (2) and the cover plate (6), on this disk one side end face, offer two pits (11), on switch base (2), offer blind hole (12) accordingly, place spring (3) and steel ball (4) in the hole.
3. explosion-proof key switch according to claim 2, it is characterized in that: described switch base (2) is gone up and is installed and the axisymmetric alignment pin of blind hole (12) (8), offer the fluting (13) that matches with alignment pin (8) on the disk (10), alignment pin (8) rotating maximum angle in fluting (13) is identical with respect to the angle in disk (10) axle center with two pits (11).
4. according to claim 1 or 2 or 3 described explosion-proof key switch, it is characterized in that: connect by the draw-in groove structure between described switch lock core (1) and the rotating shaft (7).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202688735U CN201608087U (en) | 2009-10-28 | 2009-10-28 | Anti-explosion key switch |
| PCT/CN2010/075971 WO2011050649A1 (en) | 2009-10-28 | 2010-08-13 | Explosion-proof key switch. |
| EP10826012.6A EP2348523B1 (en) | 2009-10-28 | 2010-08-13 | Explosion-proof key switch. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202688735U CN201608087U (en) | 2009-10-28 | 2009-10-28 | Anti-explosion key switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608087U true CN201608087U (en) | 2010-10-13 |
Family
ID=42952791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202688735U Expired - Lifetime CN201608087U (en) | 2009-10-28 | 2009-10-28 | Anti-explosion key switch |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2348523B1 (en) |
| CN (1) | CN201608087U (en) |
| WO (1) | WO2011050649A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663016A (en) * | 2013-12-13 | 2014-03-26 | 江苏吉野电气有限公司 | Novel elevator locking piece |
| CN103696630A (en) * | 2013-12-13 | 2014-04-02 | 江苏吉野电气有限公司 | Novel elevator lock element with pulling device |
| CN103723661A (en) * | 2012-10-10 | 2014-04-16 | 杭叉集团股份有限公司 | Dual-purpose anti-explosion storage battery forklift for combustible gas environment and combustible dust environment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107787146A (en) * | 2017-12-12 | 2018-03-09 | 江苏新力科技实业有限公司 | A kind of mine explosion-suppression and intrinsic safety type control cabinet chamber door |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3723677A (en) * | 1970-01-05 | 1973-03-27 | A Arias | Ignition key alarm |
| DE3521155A1 (en) * | 1985-06-13 | 1986-12-18 | Brown, Boveri & Cie Ag, 6800 Mannheim | Operating element for an explosion-proof switch |
| DE9203143U1 (en) * | 1992-03-10 | 1992-06-17 | Bär Elektrowerke GmbH & Co KG, 58579 Schalksmühle | Electrical switching device |
| CN2427882Y (en) * | 2000-04-26 | 2001-04-25 | 光阳工业股份有限公司 | Lock for motor cycle main switch |
| CN201298487Y (en) * | 2008-10-27 | 2009-08-26 | 常州澳丰机电制造有限公司 | Mineral intrinsic safe key switch |
| CN101699602B (en) * | 2009-10-28 | 2011-11-30 | 杭叉集团股份有限公司 | Explosion-proof key switch |
-
2009
- 2009-10-28 CN CN2009202688735U patent/CN201608087U/en not_active Expired - Lifetime
-
2010
- 2010-08-13 WO PCT/CN2010/075971 patent/WO2011050649A1/en active Application Filing
- 2010-08-13 EP EP10826012.6A patent/EP2348523B1/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723661A (en) * | 2012-10-10 | 2014-04-16 | 杭叉集团股份有限公司 | Dual-purpose anti-explosion storage battery forklift for combustible gas environment and combustible dust environment |
| CN103723661B (en) * | 2012-10-10 | 2016-05-04 | 杭叉集团股份有限公司 | The dual-purpose explosion-proof battery fork truck of imflammable gas and dust atmosphere |
| CN103663016A (en) * | 2013-12-13 | 2014-03-26 | 江苏吉野电气有限公司 | Novel elevator locking piece |
| CN103696630A (en) * | 2013-12-13 | 2014-04-02 | 江苏吉野电气有限公司 | Novel elevator lock element with pulling device |
| CN103696630B (en) * | 2013-12-13 | 2016-04-13 | 江苏吉野电气有限公司 | With the novel elevator latch fitting of striking gear |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011050649A1 (en) | 2011-05-05 |
| EP2348523A1 (en) | 2011-07-27 |
| EP2348523A4 (en) | 2013-12-04 |
| EP2348523B1 (en) | 2014-07-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGCHA GROUP CO., LTD. Free format text: FORMER OWNER: ZHEJIANG HANGCHA IMP.+EXP.CO., LTD. Effective date: 20110623 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310022 NO. 398, SHIQIAO ROAD, XIACHENG DISTRICT, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 311305 NO. 88, EAST RING ROAD, LIN AN ECONOMIC DEVELOPMENT ZONE, HANGZHOU CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110623 Address after: 311305 Ling'an Economic Development Zone, Zhejiang, East Ring Road, No. 88, No. Patentee after: Hangcha Group Co., Ltd. Address before: 310022 No. 398 Shiqiao Road, Xiacheng District, Zhejiang, Hangzhou Patentee before: Zhejiang Hangcha Imp.&Exp.Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101013 Effective date of abandoning: 20091028 |