CN201323164Y - Explosion-proof temperature controller with forced OFF function - Google Patents
Explosion-proof temperature controller with forced OFF function Download PDFInfo
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- CN201323164Y CN201323164Y CNU2008202174050U CN200820217405U CN201323164Y CN 201323164 Y CN201323164 Y CN 201323164Y CN U2008202174050 U CNU2008202174050 U CN U2008202174050U CN 200820217405 U CN200820217405 U CN 200820217405U CN 201323164 Y CN201323164 Y CN 201323164Y
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Abstract
The utility model relates to an explosion-proof temperature controller with a forced OFF function, belonging to the technical field of mechanical temperature controllers. The explosion-proof temperature controller comprises a master arm, a bellows, a moveable plate, a locating plate, a pullback spring, a cam, an insulating plate, a forced-stop bar, a base, a contact reed, an auxiliary fixed contact, an auxiliary moving contact, an auxiliary reed, an adjusting bar, a pin, a leaf spring, a moving contact, a fixed contact and a pushrod. The insulating plate protrudes outward to form a lug boss which is matched with the groove on the base. A through hole is arranged in the center of the lug boss. The height of the through hole is above 6mm.The forced-stop bar penetrates through the through hole. One end of the forced-stop bar is in contact with the adjusting bar on the auxiliary contact reed and the other end of the forced-stop bar is in contact with the cam. The cam acts on the adjusting bar through the forced-stop bar and further acts on the auxiliary reed. The utility model has the advantages that the contact of the compression-type temperature controller can be sealed in the base without using any sealing material and the explosion-proof temperature controller is suitable for refrigerators which use combustibles and explosives as the refrigerating medium.
Description
One, technical field
The utility model relates to the mechanical temperature controller technical field, and particularly a kind of band is forced the explosion-proof thermostat of OFF function.
Two, background technology
Be widely used in the control of two-door derect refrigerated refrigerator refrigeration, traditional band forces the contact of the explosion-proof thermostat of OFF function all to be in the state that is communicated with outside air, under the situation of alternating voltage 220V, rated current 4A, starting current 24A, can produce electric spark in the contact make and break process, if flammable explosive gas is arranged then can set off an explosion on every side.The structure that this traditional band is forced the explosion-proof thermostat of OFF function is made up of main body 1 and base assembly as shown in Figure 1, and master arm 2, bellows 3, portable plate 4, location-plate 5, extension spring 6, cam 7, center pole 8 are housed in the main body 1; Base assembly is made up of insulation board 9, shell fragment assembly 10, base shell 11, contact reed 12, auxilliary fixed contact 13, auxilliary moving contact 14, auxiliary reed 15, pin 16,17,18, spring leaf 19, moving contact 20, fixed contact 21, push rod 22, square breach is arranged on the insulation board 9, the handle of moulding on push rod 22 and the shell fragment assembly 10 just in time passes breach, there is very big gap the centre, the thickness that pin 16,17,18 cooperates with base shell 11 does not reach the 6mm of requirement of explosion proof yet, therefore, band forces the contact of the explosion-proof thermostat of OFF function all to be in the state that is communicated with outside air.Also some patent has been done some improvement to this traditional thermostat, makes contact can be in a relative sealed space, such as adopting epoxy resin to seal between insulation board 9 and base shell 11; Adopt round tube hole on the insulation board 9, it is cylindrical that push rod should be mutually; Auxiliary push-rod is designed to an end and contacts with auxilliary contact, and the other end and auxilliary sheet handle lower end are bonding, and cam is in auxilliary sheet handle top; But owing to the epoxies material fragility shows the pliability of going on business greatly, so the protective layer that epoxide resin material is formed, be unable to undergo repeatedly bending " be full of cracks ", fault block, final morsel shape and stripping down just can take place.In case service time is long slightly, this thermostat also can be owing to peeling off of encapsulant makes the seal cavity relative blow-by that becomes; Push rod is cylindrical, all becomes to contact with master arm and contact reed, can make that like this push rod comes off easily, plays pendulum; Auxilliary sheet handle and auxiliary push-rod bond together, and make complex process, and bonding place comes off easily, and cam will act on auxilliary sheet handle top repeatedly, and auxilliary sheet handle fractures easily, brings great trouble to the user.
Three, summary of the invention
The technical problems to be solved in the utility model is that the contact in this compression-type temperature controller is sealed in the pedestal, in addition auxiliary push-rod is made improvements, and makes its easier production and is not easy to fracture.
The technical solution that the utility model proposed is:
A kind of band is forced the explosion-proof thermostat of OFF function, is made up of main body and base assembly, and master arm, bellows, portable plate, location-plate, extension spring, cam, center pole are housed in the described main body; Described base assembly by insulation board, by force stop bar, base shell, contact reed, auxilliary fixed contact, auxilliary moving contact, auxiliary reed, transfer bar, pin, spring leaf, moving contact, fixed contact, push rod to form, insulation board outwards protrudes, projection is forming a boss to the base shell direction, groove on boss shape and the base shell is suitable, through hole is arranged in the middle of the boss, the through hole height is equal to or greater than, the shape and the through hole that stop bar by force are suitable, run through wherein, one end contacts with accent bar on the auxilliary contact reed, and the other end contacts with cam.
The purpose of this utility model can also further realize by following technical solution:
Foregoing band is forced the explosion-proof thermostat of OFF function, and the through hole in the middle of the described boss is square, and the described bar that stops by force is the T type.
Foregoing band is forced the explosion-proof thermostat of OFF function, there is boss in the central authorities of insulation board, the centre is a round tube hole, the through hole height is equal to or greater than, the whole one-tenth of push rod crux is divided into two sections, and the columniform part of left end is just passed the boss round tube hole of insulation board, become point to contact with master arm, the push rod right-hand member is the hole that cross part passes on the contact reed and becomes support pattern to be connected with the contact reed.
Foregoing band is forced the explosion-proof type compression-type temperature controller of OFF function, and described pin is combined closely with described base shell respectively, and base shell forms boss along the pin direction, and described pin contacts thickness with described pedestal and is equal to or greater than 6mm.
Foregoing band is forced the explosion-proof thermostat of OFF function, and described insulation board is equal to or greater than 0.6mm with the thickness that contacts of base shell.
Compared with prior art, the utlity model has following beneficial effect:
1, because push rod and stop bar by force and the insulation board fit clearance is little, length of fit is big, fit clearance between pin and the base shell is also very little, length of fit is big, in the time of so guaranteeing the inflammable and explosive gas stipulated when designing institute or steam at the base shell internal explosion, can not damage base shell, also can be with the base shell internal explosion to adjacent outside inflammable and explosive gas or steam propagation, this structure belongs to closed tripper, meets Ex " n " the type explosion-proof electric equipment requirement of IEC standard.
2, because the base shell internal capacity of sealing is little, if blast in its inside, then intensity is also little, so push rod and to stop the quality of fit of bar and insulation board high boss round tube hole by force less demanding.Insulation board and base shell closely interlock by boss and groove, and the two is combined closely, and are not easy to come off, so need not seal up epoxy resin between insulation board and the base shell; Cooperate with boss between pin and the base shell, engagement height reaches requirement of explosion proof, and base shell need not be thickeied, and base shell and pin mating surface also need not be sealed up epoxy resin, is easy to processing, so provide cost savings, is convenient to production in enormous quantities.
3, stop bar by force and separate with transferring bar, simple in structure, be easy to processing, stop bar by force and be the T type, even making in to stop by force bar repeatedly, cam also is not easy fracture.
4, the design uniqueness of push rod, be divided into two parts, a part is cylindrical, can closely cooperate with the round tube hole on the insulation board, becomes point to contact with the active example, another part is a cross, can just be stuck on the square hole of contact reed, become support pattern to be connected with the contact reed, such design make push rod can be in through hole flexible movement, can well not fix and can come off again, and be easy to make and assembling.
5, insulation board is equal to or greater than 0.6mm with the thickness that contacts of base shell, makes between the two in conjunction with closely, even do not adopt epoxy resin also can reach the effect of sealing.
6, because only to the base shell sealing rather than to whole thermostat sealing, so thermostat overall dimension just increases a little, and is basic the same with former thermostat, makes things convenient for refrigerator producer to design the installation site of thermostat.
Four, description of drawings:
Fig. 1: existing band is forced the explosion-proof thermostat structural representation of OFF function.
Fig. 2: the utility model band is forced the explosion-proof thermostat structural representation of OFF function.
Fig. 3: the structure enlarged drawing of push rod 22 shown in Figure 2.
Fig. 4: the boss 91 shown in Figure 2 and the profile of boss 92.
Five, embodiment:
By following examples the utility model is further elaborated.
Referring to Fig. 2, Fig. 3, shown in Figure 4, the utility model embodiment: band forces the explosion-proof type compression-type temperature controller of OFF function by being made up of main body 1 and base assembly, and master arm 2, bellows 3, portable plate 4, location-plate 5, extension spring 6, cam 7, center pole 8 are housed in the main body 1 of thermostat; Base assembly is by insulation board 9, stop bar 10 by force, base shell 11, contact reed 12, auxilliary fixed contact 13, auxilliary moving contact 14, auxiliary reed 15, transfer bar 151, pin 16,17,18, spring leaf 19, moving contact 20, fixed contact 21, push rod 22 is formed, insulation board 9 outwards protrudes, projection is forming a boss 91 to base shell 11 directions, groove on boss shape and the base shell 11 is suitable, through hole is arranged in the middle of the boss 91, more than the through hole height 6mm, stop bar 10 by force and be the T type, suitable with through hole, run through wherein, one end contacts with accent bar 151 on the auxilliary contact reed 15, and the other end contacts with cam 7.Push rod 22 whole one-tenth cruxs, be divided into two sections, the columniform part of left end is just passed the round tube hole of insulation board 9 convex platforms 92, contact with 2 one-tenth of master arms point, and push rod 22 right-hand members are cross part and pass hole on the contact reed 12 and support with contact reed 12 and be connected.Fixed contact 20 passes base shell 11 by pin 18 and draws the outside, moving contact 21 passes base shell 11 by contact reed 12 and pin 16 and draws the outside, auxilliary fixed contact 13 passes base shell 11 by pin 17 and draws the outside, and auxilliary moving contact 14 passes base shell 11 by auxiliary reed 15 and pin 18 and draws the outside.Pin 16,17,18 combines with described base shell 11 respectively, and base shell 11 forms boss along the pin direction, and pin contacts more than the thickness 6mm with base shell.Insulation board 9 contacts more than the thickness 0.6mm with base shell 11.Thermostat shown in Figure 2 is in on-state, when temperature descends, bellows 3 shrink make push rod 22 slowly dorsad pedestal move, when arriving critical localisation, spring leaf 19 upsets, moving contact 20, fixed contact 21 separate and disconnect, otherwise then connect.When the user needed, cam 7 promoted to stop bar 10 by force, stopped bar 10 by force and promoted to assist the handle of moulding on the reed 15 to transfer bar 151 that auxilliary fixed contact 13 is separated with auxilliary moving contact 14.
Claims (5)
1, a kind of band is forced the explosion-proof thermostat of OFF function, is made up of main body 1 and base assembly, and master arm (2), bellows (3), portable plate (4), location-plate (5), extension spring (6), cam (7), center pole (8) are housed in the described main body (1); Described base assembly is by insulation board (9), stop bar (10) by force, base shell (11), contact reed (12), auxilliary fixed contact (13), auxilliary moving contact (14), auxiliary reed (15), transfer bar (151), pin (16), (17), (18), spring leaf (19), moving contact (20), fixed contact (21), push rod (22) is formed, it is characterized in that: insulation board (9) outwards protrudes, projection is forming a boss (91) to base shell (11) direction, groove on boss shape and the base shell (11) is suitable, through hole is arranged in the middle of the boss (91), the through hole height is equal to or greater than 6mm, the shape and the through hole that stop bar (10) by force are suitable, run through wherein, one end contacts with accent bar (151) on the auxilliary contact reed (15), and the other end contacts with cam (7).
2, band according to claim 1 is forced the explosion-proof thermostat of OFF function, it is characterized in that: the through hole in the middle of the described boss (91) is square, and the described bar (10) that stops by force is the T type.
3, band according to claim 1 is forced the explosion-proof thermostat of OFF function, it is characterized in that: there is boss (92) in the central authorities of insulation board (9), the centre is a round tube hole, the through hole height is equal to or greater than 6mm, the whole one-tenth of push rod (22) crux, be divided into two sections, left end is the boss round tube hole that columniform part is just passed insulation board (9), become some contact with master arm (2), push rod (22) right-hand member is the hole that cross part passes on the contact reed (12) and is connected with contact reed (12) one-tenth support pattern.
4, band according to claim 1 is forced the explosion-proof thermostat of OFF function, it is characterized in that: combine closely with described base shell (11) respectively in described pin (16), (17), (18), base shell (11) forms boss along the pin direction, and described pin contacts thickness with described pedestal and is equal to or greater than 6mm.
5, band according to claim 1 is forced the explosion-proof thermostat of OFF function, and it is characterized in that: described insulation board (9) is equal to or greater than 0.6mm with the thickness that contacts of base shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202174050U CN201323164Y (en) | 2008-11-28 | 2008-11-28 | Explosion-proof temperature controller with forced OFF function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202174050U CN201323164Y (en) | 2008-11-28 | 2008-11-28 | Explosion-proof temperature controller with forced OFF function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201323164Y true CN201323164Y (en) | 2009-10-07 |
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ID=41160539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202174050U Expired - Lifetime CN201323164Y (en) | 2008-11-28 | 2008-11-28 | Explosion-proof temperature controller with forced OFF function |
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| Country | Link |
|---|---|
| CN (1) | CN201323164Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426946A (en) * | 2011-11-15 | 2012-04-25 | 安徽鑫龙电器股份有限公司 | Auxiliary contact structure for low-voltage electrical appliance |
| CN110246725A (en) * | 2019-07-09 | 2019-09-17 | 佛山通宝华通控制器有限公司 | A kind of semiautomatic defrosting explosion-proof pressure thermoregulator |
-
2008
- 2008-11-28 CN CNU2008202174050U patent/CN201323164Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426946A (en) * | 2011-11-15 | 2012-04-25 | 安徽鑫龙电器股份有限公司 | Auxiliary contact structure for low-voltage electrical appliance |
| CN102426946B (en) * | 2011-11-15 | 2014-03-12 | 安徽鑫龙电器股份有限公司 | Auxiliary contact structure for low-voltage electrical appliance |
| CN110246725A (en) * | 2019-07-09 | 2019-09-17 | 佛山通宝华通控制器有限公司 | A kind of semiautomatic defrosting explosion-proof pressure thermoregulator |
| CN110246725B (en) * | 2019-07-09 | 2024-04-19 | 佛山通宝华通控制器有限公司 | Semi-automatic defrosting explosion-proof pressure type temperature controller |
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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: JIANGSU XIMATE ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER OWNER: CHANGZHOU XIMATE ELECTRIC APPLIANCE CO., LTD. Effective date: 20090911 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090911 Address after: Yongan village committee, Danyang Development Zone, Jiangsu Province, China: 212300 Patentee after: Jiangsu Thermoster Electrical Appliance Co., Ltd. Address before: Wei village, Xinbei District, Jiangsu City, Changzhou Province, China: 213127 Patentee before: Changzhou Thermoster Electrical Appliance Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091007 |
|
| CX01 | Expiry of patent term |