CN2388702Y - Hand reset pneumatic overheat protector - Google Patents
Hand reset pneumatic overheat protector Download PDFInfo
- Publication number
- CN2388702Y CN2388702Y CN 99244215 CN99244215U CN2388702Y CN 2388702 Y CN2388702 Y CN 2388702Y CN 99244215 CN99244215 CN 99244215 CN 99244215 U CN99244215 U CN 99244215U CN 2388702 Y CN2388702 Y CN 2388702Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- cover plate
- swivel nut
- overheat protector
- bellows
- 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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- Thermally Actuated Switches (AREA)
Abstract
The utility model relates to a hand resetting pneumatic overheat protector, which is composed of a temperature sensitive component, a film box, a push rod, a base seat, a cover plate, a switch component, and a film sheet prearranged external force regulating mechanism. A thread sleeve is arranged between the top part of the push rod and the central circular hole of the cover plate, and a compression spring is arranged between the thread sleeve and the connecting position of the push rod and an elastic sheet, so as to form the regulating mechanism. The axial position of the thread sleeve can be changed, the magnitude of the film sheet prearranged external force can be changed, and thereby, the jump temperature range of the film sheet can be changed. Doing like the way, the requirement of the assembly technology of the film box can be reduced, and the qualified rate of the product can be improved.
Description
The utility model relates to temperature automatic control technology field, particularly a kind of hand-reset formula air-pressure type overheat protector.
Existing a kind of hand-reset formula air-pressure type overheat protector is made up of the temperature module, bellows, push rod, pedestal, cover plate, switch module; diaphragm in push rod one end and the bellows contacts; the push rod middle part that is positioned at pedestal and cover plate central authorities is connected with switch module moving contact flexure strip; by the diaphragm kick, the dynamic and static contact of switch module is disconnected with the upper and lower displacement of push rod or connect.The overheat protector of said structure is put external force owing to can not apply adjustable giving to bellows; the stability of the diaphragm tilting force in the bellows is difficult to be controlled on the more accurate level in addition; thereby the packaging technology consistency to bellows is had higher requirement; increased the production difficulty; therefore; in batch production process, product qualified rate is lower.
The purpose of this utility model is to provide a kind of hand-reset formula air-pressure type overheat protector, and it can apply adjustable giving to bellows and put external force, has enlarged the diaphragm upset temperature range in the bellows, thereby, improved product percent of pass.
The purpose of this utility model is achieved in that a kind of hand-reset formula air-pressure type overheat protector; comprise the temperature module, bellows, push rod, pedestal, cover plate, switch module; diaphragm in push rod one end and the bellows contacts; the push rod middle part that is positioned at pedestal and cover plate central authorities is connected with switch module moving contact flexure strip, is provided with an energy and the diaphragm in the bellows is applied gives the governor motion of putting external force between push rod and cover plate.Between push rod top and cover plate central circular hole, be provided with swivel nut, between push rod, flexure strip joint and swivel nut, be provided with the compression spring.For being threaded, for being slidingly connected, the swivel nut top is provided with flat recess between push rod and the swivel nut between described swivel nut and the cover plate.
Advantage of the present utility model is and can adjusts the finished product that is lower than qualified kick temperature range, like this, can improve product percent of pass greatly, reduce producting process difficulty.
Fig. 1 is the structural representation of an embodiment of the utility model.
By following embodiment the utility model is further elaborated.
Referring to shown in Figure 1, an embodiment hand-reset formula air-pressure type overheat protector of the present utility model is made up of temperature sensing tube 1, capillary 2, bellows 11, push rod 6, pedestal 3, cover plate 10, switch module 4.Push rod 6 one ends contact with the diaphragm of bellows 11, and push rod 6 middle parts are connected with the flexure strip 9 of switch module 4.To compress spring 5 and be inserted in push rod 6 to flexure strip 9 places, and again swivel nut 7 be screwed in cover plate 10 central circular hole internal threads and pushes down compression spring 5, the diaphragm that constitutes present embodiment gives puts the external force governor motion.External force is put in giving that this mechanism produced, and imposes on by push rod 6 on the diaphragm of bellows 11.Circular hole is slidingly matched in push rod 6 tops and the swivel nut 7.Because swivel nut 7 tops have flat recess, put external force by giving of being produced of turn swivel nut 7 scalable compression spring 5, promptly put on giving on the diaphragm and put external force and can regulate continuously within the specific limits, thereby, make diaphragm kick temperature range adjustable.
During work, when the diaphragm kick temperature of above-mentioned overheat protector was lower than claimed range, swivel nut 7 can turn clockwise; increased the external force that acts on the diaphragm, at this moment, only under higher temperature; the bigger thrust of the inner generation of the temperature module just can make the diaphragm upset.The axial location of appropriate change swivel nut 7 just can change the power that is applied on the diaphragm, diaphragm upset temperature is brought up in the required scope, thereby just diaphragm can be overturn temperature underproof overheat protector product on the low side, is adjusted into qualified product.This structure is that large-scale production brings positive effect; Reduced the bellows encapsulation difficulty; Widened diaphragm kick temperature range; Improved product percent of pass greatly.
Claims (3)
1, a kind of hand-reset formula air-pressure type overheat protector; comprise the temperature module, bellows, push rod, pedestal, cover plate, switch module; diaphragm in push rod one end and the bellows contacts; the push rod middle part that is positioned at pedestal and cover plate central authorities is connected with switch module moving contact flexure strip, it is characterized in that: be provided with an energy and the diaphragm in the bellows is applied give the governor motion of putting external force between push rod and cover plate.
2, hand-reset formula air-pressure type overheat protector according to claim 1 is characterized in that: be provided with swivel nut between push rod top and cover plate central circular hole, be provided with the compression spring between push rod, flexure strip joint and swivel nut.
3, hand-reset formula air-pressure type overheat protector according to claim 1 is characterized in that: for being threaded, for being slidingly connected, the swivel nut top is provided with flat recess between push rod and the swivel nut between described swivel nut and the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99244215 CN2388702Y (en) | 1999-09-07 | 1999-09-07 | Hand reset pneumatic overheat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99244215 CN2388702Y (en) | 1999-09-07 | 1999-09-07 | Hand reset pneumatic overheat protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388702Y true CN2388702Y (en) | 2000-07-19 |
Family
ID=34030355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99244215 Expired - Lifetime CN2388702Y (en) | 1999-09-07 | 1999-09-07 | Hand reset pneumatic overheat protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2388702Y (en) |
-
1999
- 1999-09-07 CN CN 99244215 patent/CN2388702Y/en not_active Expired - Lifetime
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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 |