CN2504751Y - Sealed press knob switch - Google Patents
Sealed press knob switch Download PDFInfo
- Publication number
- CN2504751Y CN2504751Y CN 01254186 CN01254186U CN2504751Y CN 2504751 Y CN2504751 Y CN 2504751Y CN 01254186 CN01254186 CN 01254186 CN 01254186 U CN01254186 U CN 01254186U CN 2504751 Y CN2504751 Y CN 2504751Y
- Authority
- CN
- China
- Prior art keywords
- lug plate
- base
- switch
- fixedly connected
- upper cover
- 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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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model relates to an explosion-proof and sealing button switch the base of which is provided with a sealing groove which is tightly connected with the convex rib on an upper cover through pre-coating sealants and separates the base into a sealing cavity and a non-sealing cavity. The inside of the sealing cavity is fixedly connected with two or three lug terminals by locating nylon blocks and the contact centers of the lug terminal are on a line. The pre-coating sealants are around the lug terminal and a passive magnet is fixedly connected with one of the lug terminals by a moving spring leaf. In the non-sealing cavity, button components are connected with the base. An active magnet is fixedly connected with the button component. The base has a locating hole fixedly connected with the locating pin on the upper cover. The switch is good in performance, small in size, low in cost and anti-explosive, so the switch can not only increase economic benefits of enterprises but increase social benefits.
Description
Background technology
The utility model belongs to a kind of electrical control components and parts, the particularly improvement of explosion-proof button construction of switch.
Affiliated technical field:
Existing a kind of switch includes base, upper cover plate, lug plate, magnet, button; Around the switch annular seal space, do not have groove and location hole, just do not have convex tendon and alignment pin yet, can not realize sealing in the corresponding position of upper cover plate; Can't seal reliably at wiring copper sheet and annular seal space inwall place; And the block board thickness in the middle of its annular seal space and the non-tight chamber that is separated by can't separate annular seal space and non-tight chamber when upper cover plate covers on the base only about 0.3mm, and annular seal space is sealed.Because the switch of this structure is not accomplished to seal fully, does not just have explosion-proof ability yet, range of application is restricted, and can not be used in explosion-proof place.
Summary of the invention
The sealing push-button switch includes base 1, upper cover plate 15, button; Be to have on the base sealed groove 11; Sealed groove is tightly connected by the convex tendon that has on interior envelope fluid sealant 13 and the upper cover plate, and base is separated into annular seal space and non-tight chamber; Be fixed with lug plate 5, lug plate 7 by location nylon block 12 in the annular seal space; Lug plate 5 and center, lug plate 7 contact are point-blank; Envelope fluid sealant 13 in being filled with around the lug plate; Be fixedly connected on the lug plate 5 by movable reed 14 by moving magnet 4; In the non-tight chamber, the knob assembly of being made up of spring 9, spring stem stem 10 2 is connected on the base; Knob moves around on stem stem by spring; Initiatively magnet 3 is fixedly connected on the knob assembly; Have location hole 8 on the base, and have alignment pin on the upper cover plate and fixedly connected.The switch of this structure is special purpose " normally closed " type or " often opening " type sealing push switch.
The wiring copper sheet of this switch also can be three, can be fixed with lug plate 6 by location nylon block 12 in annular seal space, and the center, contact of lug plate 6 and lug plate 5, lug plate 7 point-blank.Other structure is constant.
The utility model base can adopt the flame retardant type nylon material to make, switch is one group of double-throw contact, switch contact all is sealed in the cavity that dwindles, its action conversion is by 14 actions of moving magnet 4 (in annular seal space) back drive activity reed by active magnet 3 (outside annular seal space) traction, contact is connected up and down, thereby reached the purpose that control switch switches.Sealing is to adopt the close interlock of convex tendon corresponding on custom-designed dowel hole between base and the cover plate, groove and the upper cover plate to realize, and adopted powerful interior envelope fluid sealant to be coated in hole and the groove, make the contact-making surface of annular seal space (cavity at lug plate place) not only mutual interlock the increasing sealing of upper cover plate and base, and can bring into play the sealing cement maximum effect, guaranteed the reliability of switch sealing.This is the main key issue of this switch.The knob assembly of switch has the return action function of knob, and initiatively magnet is with the mobile and same moved further of knob assembly, when active magnet near by moving magnet the time, inhale movingly by moving magnet, thereby drive the movable reed that links to each other with it contact is changed.
The difficult point of this technical scheme is that the wiring copper sheet 5,6,7 of three contacts is when annular seal space outwards transmits electric current, will inevitably increase unnecessary space at copper sheet and annular seal space sidewall junction, the difficulty of this place's sealing is increased, handle the effect that the bad major function that just will lose switch promptly seals.The solution of this patent is to have reserved one " little space " (being the position of fluid sealant 13) in the pairing annular seal space of each wiring copper sheet, after the switch parts assemble, in this " little space ", put into an amount of fluid sealant, load onto the relief fluid sealant when upper cover plate and seal all holes, guarantee the airtight zero-clearance of whole annular seal space at the annular seal space inwall.This is second key issue that solves this switch.
There are a lot of workplaces should use small and exquisite electric switch, solve the explosion-proof problem of explosive medium that exists in the field of employment again, such as the explosion-proof problem in the production operation between hoolivan.What this patent was related is a kind of novel small-sized sealing push switch, being specially adapted to the abominable place of condition of work controls electric equipment, as the workshop of coal gas, hydrogen, oxygen and other explosion hazard gases, and the freezing equipments such as refrigerator to newly developing in the recent period.Refrigerator will bring the danger of blast because of adopting new not fluorine-containing refrigerant as its gas leakage.Thereby equipment safety operation can be guaranteed in these places after adopting this switch.From the angle of environmental protection, can be " green switch ".The utility model push switch is also referred to as flame-proof switch when using in special place.This switch good seal performance, volume is little, cost is low, and is explosion-proof again, both can improve economic benefit of enterprises, can improve social benefit again.The switch sealing reliability realizes by the vacuum test method, can guarantee the absolute reliable of product, reaches sealing, explosion-proof fully.
Description of drawings:
Accompanying drawing 1 is a kind of structural representation of the utility model.
Accompanying drawing 2 is end views of Fig. 1.
Accompanying drawing 3 is second kind of structural representation of the utility model.
Accompanying drawing 4 is the utility model application structure schematic diagrames.
1 base, 2 knob assemblies, 3 initiatively magnet, 4 are sealed fluid sealant, 14 movable reeds, 15 upper cover plates in moving magnet, 5 lug plates, 6 lug plates, 7 lug plates, 8 location holes, 9 springs, 10 spring stem stems, 11 sealed grooves, the 12 location nylon blocks, 13.
Embodiment
Embodiment 1: see accompanying drawing 1, accompanying drawing 2, accompanying drawing 4, three ends outputs (contact is one group of switching) sealing push switch.
Have sealed groove 11 on the base, be tightly connected, base is separated into annular seal space and non-tight chamber by interior envelope fluid sealant 13 and the convex tendon that upper cover plate has; Be fixed with lug plate 5, lug plate 6, lug plate 7 by location nylon block 12 in the annular seal space; The center, contact of lug plate 5, lug plate 6 and lug plate 7 point-blank.Envelope fluid sealant 13 in being filled with around the lug plate; Be fixedly connected on the lug plate 5 by movable reed 14 by moving magnet 4; In the non-tight chamber, the knob assembly of being made up of spring 9, spring stem stem 10 2 is connected on the base; Knob moves around on stem stem by spring; Initiatively magnet 3 is fixedly connected on the knob assembly; Have location hole 8 on the base, and have alignment pin on the upper cover plate and fixedly connected.
The sealing push switch of this structure is applied on the refrigerator, and lug plate 5 connects power supply, and lug plate 6 connects fan, and lug plate 7 connects gate light.
Embodiment 2: see accompanying drawing 3, two ends outputs (contact is that a pair is often opened) sealing push switch.Be fixed with lug plate 5, lug plate 7 by location nylon block 12 in the annular seal space.Lug plate 5 and center, lug plate 7 contact are point-blank; Other structures are the same.
Claims (2)
1, a kind of sealing push-button switch, include base 1, upper cover plate 15, lug plate, magnet, button, it is characterized in that having on the base sealed groove 11, be tightly connected, base is separated into annular seal space and non-tight chamber by interior envelope fluid sealant 13 and the convex tendon that upper cover plate has; Be fixed with lug plate 5, lug plate 7 by location nylon block 12 in the annular seal space; Lug plate 5 and center, lug plate 7 contact are point-blank; Envelope fluid sealant 13 in being filled with around the lug plate; Be fixedly connected on the lug plate 5 by movable reed 14 by moving magnet 4;
In the non-tight chamber, the knob assembly of being made up of spring 9, spring stem stem 10 2 is connected on the base; Knob moves around on stem stem by spring; Initiatively magnet 3 is fixedly connected on the knob assembly;
Have location hole 8 on the base, and have alignment pin on the upper cover plate and fixedly connected.
2,, be characterised in that in annular seal space also to be fixed with lug plate 6 that lug plate 6 and lug plate 5, center, lug plate 7 contact are point-blank by location nylon block 12 according to the described sealing push-button switch of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254186 CN2504751Y (en) | 2001-10-15 | 2001-10-15 | Sealed press knob switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254186 CN2504751Y (en) | 2001-10-15 | 2001-10-15 | Sealed press knob switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2504751Y true CN2504751Y (en) | 2002-08-07 |
Family
ID=33663559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254186 Expired - Lifetime CN2504751Y (en) | 2001-10-15 | 2001-10-15 | Sealed press knob switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2504751Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714995A (en) * | 2012-09-29 | 2014-04-09 | 启东恒瑞防爆通讯电气有限公司 | Improved explosion-proof switch |
-
2001
- 2001-10-15 CN CN 01254186 patent/CN2504751Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714995A (en) * | 2012-09-29 | 2014-04-09 | 启东恒瑞防爆通讯电气有限公司 | Improved explosion-proof switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111015 Granted publication date: 20020807 |