CN1991114B - Initiative type thermal drive snap lock - Google Patents
Initiative type thermal drive snap lock Download PDFInfo
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- CN1991114B CN1991114B CN2005101355327A CN200510135532A CN1991114B CN 1991114 B CN1991114 B CN 1991114B CN 2005101355327 A CN2005101355327 A CN 2005101355327A CN 200510135532 A CN200510135532 A CN 200510135532A CN 1991114 B CN1991114 B CN 1991114B
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Abstract
The invention relates to an active thermal driving locking structure for disinfector and other appliance. The door switch is controlled by simple mechanical transmission device according to the principle that bimetallic strip is deformed in heating. When the temperature in cabinet achieves alarming temperature the door is locked by deformation of bimetallic strip and when the temperature is decreased to safe range the door is unlocked. The device is provided with simple structure and convenience installment. The temperature generated by the heater belonging to said lock itself is used as the action condition. As the thermal energy is transferred to mechanical energy the switch of door is controlled and it is safe and stable in working period. In the invention there is no need to open or close lock by manual work and the lock switch driven by thermal force is controlled by the signal of computer panel and the temperature in cabinet.
Description
Technical field
The present invention relates to a kind of initiative type thermal drive snap lock, particularly, the present invention is meant when needed a kind of especially, be switched on or switched off and lock temperature raising or the reduction that the heater that carries makes bimetal leaf, thereby make bimetal leaf action, the device that has contact with that causes locking moves and reaches and open or the purpose of locking.
Background technology
State Standard of the People's Republic of China GB17988-2004 " tableware disinfector safety and hygienic requirements " 6.1.22.101 regulation, " ozone disinfection cabinet (chamber), ultraviolet disinfection cabinet (chamber) all should be installed door switch; when maximum slit that disinfection cabinet (chamber) door is opened during greater than 2cm; ozone generating-device, quartz burner quit work immediately; when door is shut again, ozone generating-device, quartz burner are reworked.Ozone concentration 〉=40mg/m
3Ozone disinfection cabinet (chamber), ultraviolet disinfection cabinet (chamber) door the braking lock-switch should be installed, make after disinfection cabinet (chamber) is finished disinfection cycle, disinfection cabinet (chamber) Men Caineng opens "
Two kinds of states that this standard provides when concrete the execution, if utilize the lock of prior art, exist the possibility to the human injury:
First kind is to open the door to have a power failure to make ozone generating-device, quartz burner quit work, and still, if when door is opened, the ozone concentration in ozone disinfection cabinet (chamber), the ultraviolet disinfection cabinet (chamber) also on dangerous concentrations, the injury to human body will take place;
Second kind is that do not finish the work cycle refusal is opened door, and in fact this specified and can only adopt electric lockset because have only electric lockset, can and the control device of ozone disinfection cabinet (chamber), ultraviolet disinfection cabinet (chamber) so link.
How to design a kind of simple in structurely, the lock that can satisfy described requirement again is a problem to be solved by this invention.
Existing disinfection cabinet (or similar electrical equipment) door body switch mostly is contact outage formula, outage formula in contact is easy to just can open at a door body during the high-temperature sterilization or during the ozonization, the electric elements of uperization cabinet and other household electrical appliances just quit work though open the door, but during the high temperature that produces and (or) a large amount of ozone moment can not reduce and (or) disappear, this moment is as easy as rolling off a log cause high temperature to the scald of human body and (or) high-concentrated ozone leaks the injury to human body.For this reason, those skilled in the art have carried out a series of improvement, row documents specific as follows with regard to door body, the snap-on structure of disinfection cabinet and other household electrical appliances:
CN97209043.6 discloses a kind of burn-proof safety lock, as high-temperature disinfection cabinet and other household electrical appliances snap-on.Use shape memory alloy spring for pushing away the lock spring, when high temperature, have strong elasticity, push locking bar to snap close, the cabinet door can not be opened.This spring weakens when room temperature, locking bar is pushed back by the spring return action, and the cabinet door can be opened.
CN200420093376 discloses the automatically controlled time-delay snap-on of a kind of washing machine safety device.Comprise: pedestal, an end are fixed on the lock bolt, PTC ceramic heating element, bimetal leaf, slide plate, back-moving spring, contact of U-shaped reed, the tongue-shaped reed movable end at tongue-shaped reed, the tongue-shaped reed middle part of base bottom etc.When washing machine energising work, bimetal leaf is added thermal deformation by ceramic heating element, and the movable end that promotes tongue-shaped reed drives lock bolt and inserts slide plate square hole locking slide plate downwards, thereby guarantees that Men Buhui is opened in the washing machine course of work.When the laundry end, the switch outage, the bimetal leaf cooling, thus spring leaf and slide plate reset, and this moment, door just can be opened.
The similar locking mechanism complexity of prior art, the reliability of action is low, in view of this, special proposition the present invention.
Summary of the invention
Main purpose of the present invention is to provide a kind of initiative type thermal drive snap lock that is used for disinfection cabinet and other household electrical appliances.
Initiative type thermal drive snap lock structure of the present invention is used for disinfection cabinet or similar household electrical appliances, beat opening door body during operation accidentally, the unlatching distance of door body can be controlled in the scope of appointment, thereby avoid the injury that ozone leaks or ultraviolet light causes human body.
More specifically, the lockset of prior art generally has only two actions, close or open, and complex structure often, the present invention proposes a kind of active half locking heating power lock, when the operator opens body accidentally, even quartz burner or ozone generator moment stopped work, also can stop the user to continue to open the door body of described household electrical appliances, thereby guarantee user's safety.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of initiative type thermal drive snap lock, comprise a substrate, one electric heater assembly is set on substrate, on substrate, also be provided with the fixed point that is used for fixing bimetal leaf one end, and, be used for the fastening devices that pivot fixedly has contact with device movingly, the described device that has contact with can move around the pivot on the fastening devices, the end of having contact with the forearm of device is provided with a crotch, and the end of having contact with the postbrachium of device is provided with opening, and the other end of bimetal leaf is inserted in the opening.
Preferably, the present invention is arranged to "＜" type prong with described opening.
Finish closed action in order to make full use of the gravity that has contact with device, the length of postbrachium of having contact with device is less than the length of the forearm that has contact with device, preferably, the length of having contact with the postbrachium of device is to have contact with the length 10-40% of the forearm of device, more preferably, the length of having contact with the postbrachium of device is to have contact with the length 15-25% of the forearm of device.In other words, the present invention finishes closed action in order to utilize the gravity that has contact with device, and center of gravity has been arranged on the pivot on the fastening devices between the crotch of end.
It is characterized in that described bimetal leaf is dish-shaped.
Fixed point and fastening devices and substrate are wholely set, and perhaps, described fixed point and fastening devices are spirally connected or are weldingly fixed on the bottom of substrate.
Thermal drive snap locking device of the present invention also comprises a guard shield, and described guard shield is fixed on the substrate, and its a end is offered one and is convenient to have contact with the fluting that forearm that device stretches out moves again.
Correspondingly, if snap-on of the present invention is applied on the specific product, need on the door body, be provided with and has contact with connector with it ordinatedly.
Further, when lock of the present invention is in closed condition, have contact with the forearm length or the installation site of device, can make a body be opened to maximum 2cm ground state.
During concrete the use, when household electrical appliances are in the cooking or disinfection, described electric heater assembly starts and the generation heat, raising along with temperature, the loose end of bimetal leaf is upwards (according to direction as shown, if the switching direction of lock changes, the action of bimetal leaf can be derived with reason) move, the crotch 3221 of snap-on device 3 is under the effect of gravity, fall, be articulated in the having contact with on the connector 51 of door body 5, a door body is in closed condition, when described electric household appliance temperature inside is reduced to a certain degree, described bimetal leaf moves down, promote crotch 3221 and move up, final sum is had contact with connector 51 and is broken away from, and the door body can be opened.
Initiative type thermal drive snap lock of the present invention, also comprise a cover plate 33 and a guard shield 34, described cover plate 33 is fixedly installed on upper periphery, described guard shield 34 is fixedly installed on the bottom of substrate 32, the one end contains within it bimetal leaf 321 is whole, and its other end is offered one and had contact with the guard shield fluting 341 that device 322 passes for the ease of mechanical interlock in guard shield 34.
The described thermal drive snap lock construction that is used for disinfection cabinet and other household electrical appliances, the other end of described guard shield 34 is the end near door body 5, described mechanical interlock has contact with device 322 parts and is included in the guard shield 34, and another part passes guard shield fluting 341 and overlaps with the connector 51 that has contact with that is arranged on the body 5.
Use beneficial effect of the present invention to be: at first, thermal drive snap lock apparatus structure of the present invention is simple, and in fact, it is mainly by four parts, that is, substrate 32, electric heater assembly, bimetal leaf 321, have contact with device 322 and just can finish on-off action.
Secondly, during operation, thermal drive snap lock is safe and reliable; In addition, thermal drive snap locking device of the present invention need not manually to unblank, shut.
Description of drawings
Fig. 1 is one of exploded view of heating power lock of the present invention;
Fig. 2 be heating power of the present invention lock exploded view two;
Fig. 3 is the decomposing schematic representation of thermal drive snap locking device of the present invention;
Fig. 4 is that thermal drive snap locking device of the present invention is installed in the structural representation on disinfection cabinet and other household electrical appliances;
Fig. 5 is the structural scheme of mechanism of thermal drive snap locking device off working state of the present invention;
Fig. 6 is the structural scheme of mechanism of thermal drive snap locking device duty of the present invention;
In the present invention, the title correspondence of each figure number mark and parts is as follows: computer control panel (1), holding wire (2), snap-on device (3), electric heater assembly (31), prap (311), high temperature resistant line (312), substrate (32), bimetal leaf (321) has contact with device (322), crotch (3221), "＜" type prong 3222, "＜" type tail lower edge 3223, "＜" type tail upper edge 3224, fixed point (323), fastening devices (324), cover plate (33), guard shield (34), guard shield fluting (341), fixing inner bag (4), door body (5) has contact with connector (51).
In Figure of description Fig. 4 of the present invention, Fig. 5, described bimetal leaf has two, and this is in order to describe two positions of bimetal leaf under normal temperature and high temperature, rather than the position is provided with two bimetal leafs in the drawings.
The specific embodiment
Below by specific embodiment, the present invention is described in detail for accompanying drawing in addition.
Referring to accompanying drawing, decomposing schematic representation for thermal drive snap locking device of the present invention, the described thermal drive snap lock construction that is used for disinfection cabinet and other household electrical appliances comprises an electric heater assembly 31, electric heater assembly 31 preferred PTC ceramic heating elements of the present invention, one is arranged on electric heater assembly 31 bottoms, the substrate 32 that is used for fixing the electric heater assembly, bottom at described substrate 32 is provided with rubber-like, be heated elastically-deformable bimetal leaf 321 just takes place, and have contact with device 322 with the mechanical interlock of bimetal leaf 321 1 ends overlap joints, described mechanical interlock has contact with device 322 other ends and overlaps with the connector 51 that has contact with that is arranged on the body 5, explanation is around here, on described electric heater assembly 31, be provided with one and be convenient to the prap 311 that links to each other with holding wire 2, certainly, also can adopt other termination, be not limited to the prap form that is provided in the present invention and the accompanying drawing, as using connecting groove, connecting line etc.
Further, be provided with the fixed point 323 that is used for fixing bimetal leaf 321 in the bottom of described substrate 32 and be used for fixing the fastening devices 324 that mechanical interlock has contact with device 322, one end of described bimetal leaf 321 is fixed on the fixed point 323, but described mechanical interlock has contact with being fixed in the fastening devices 324 of other end upper and lower displacement campaign of device 322.
Described fixed point 323 and fastening devices 324 are wholely set with substrate 32, perhaps, described fixed point 323 and fastening devices 324 are spirally connected or are weldingly fixed on the bottom of substrate 32, as shown in Figure 3, fixed point and fastening devices adopt the mode that is wholely set to be fixed on the bottom of substrate 32 in embodiments of the present invention.
As shown in Figure 3, described thermal drive snap locking device 3 further comprises a cover plate 33 and a guard shield 34, described cover plate 33 is fixedly installed on the upper periphery of electric heater assembly 31, described guard shield 34 is fixedly installed on the bottom of substrate 32, the one end contains within it bimetal leaf 321 is whole, and its other end is offered one and had contact with the guard shield fluting 341 that device 322 passes for the ease of mechanical interlock in guard shield 34.As shown in Figure 4, the other end of described guard shield 34 is that described mechanical interlock has contact with device 322 parts and is included in the guard shield 34 near an end of door body 5, and another part passes guard shield fluting 341 and overlaps with the connector 51 that has contact with that is arranged on the body 5.Supplementary notes is described cover plate 33 sockets or connect and fix the upper periphery that is arranged on electric heater assembly 31 around here; Described guard shield 34 sockets or grafting are fixedly installed on the bottom of substrate 32.
In addition, bimetal leaf 321 described in the present invention adopts the bimetal leaf structure, described mechanical interlock has contact with device 322 and adopts hook structure, as shown in Figure 3, this hook structure is a crotch at the end 3221 with door body card connector overlap joint, and the inflexed radian of its crotch contains 1/2 surface area of body card connector 51 at least; This hook structure is offered into horizontal "＜" font with an end of bimetal leaf 321 overlap joints, wherein one of bimetal leaf 321 correct and be placed in "＜" type prong 3222, at normal temperatures, this bimetal leaf 321 is curved slightly downwards to be leaned against on "＜" type tail lower edge 3223 of "＜" type prong, and the mechanical interlock of hook structure has contact with device 322 and is the nature level; Under the situation of being heated, the generation elastic deformation of being heated of this bimetal leaf 321, one end of bimetal leaf 321 is fixed on the fixed point 323, and by conduction of heat, radiation, a slightly decurved end pops up, get on "＜" type tail upper edge 3224 of "＜" type prong, at this moment, it is that the center presses down with the fixed point of fastening devices 324 that the mechanical interlock of hook structure has contact with device 322, just in time is clamped on to have contact with on the connector, at this moment, the door body is locked.
As Fig. 4, shown in Figure 5, the line of two bimetal leafs wherein is respectively the schematic diagram of thermal drive snap locking device of the present invention work or off working state; As shown in Figure 4, be the structural scheme of mechanism of thermal drive snap locking device duty of the present invention; In conjunction with Fig. 4, when the startup power supply carries out work after door body 5 is shut, computer control panel 1 just passes to electric heater assembly 31 in the thermal drive snap locking device 3 with the signal of telecommunication by holding wire 2, electric heater assembly 31 is just started working, when temperature reaches certain temperature, bimetal leaf 321 just bimetal leaf just sticks up to a side, with it the mechanical interlock of contacted hook structure have contact with device 322 begin the action, hook and have contact with connector 51 on the body 5, a body 5 can not be pulled out, the duration of work signal source is carried out tracking and monitoring always, when reaching the time of computer control panel 1 setting, computer control panel 1 is just passed to electric heater assembly 31 in the thermal drive snap locking device 3 to the signal of telecommunication by holding wire 2, electric heater assembly 31 just quits work, when temperature is reduced to uniform temperature, bimetal leaf 321 just bimetal leaf just sticks up to another rightabout, with it the mechanical interlock of contacted hook structure have contact with device 322 stop the action, throw off to hook and have contact with connector 51 on the body 5, a body 5 can be pulled out, and the work period finishes.When disinfection cabinet and other household electrical appliances start when carrying out disinfection, when thermal drive snap locking device 3 monitors the numerical value that computer control panel 1 sets once more by holding wire 2, each parts in the thermal drive snap locking device 3 will repeat above program.
Claims (14)
1. initiative type thermal drive snap lock, it is characterized in that: described snap-on comprises a substrate, on substrate, be provided with the fixed point (323) that is used for fixing bimetal leaf (321) one ends, and, be used for the fastening devices (324) that pivot fixedly has contact with device (322) movingly, describedly have contact with the pivot that device (322) can center on the fastening devices (324) and move, the end of having contact with the forearm of device (322) is provided with a crotch (3221), the end of having contact with the postbrachium of device (322) is provided with opening, the other end of bimetal leaf (321) is inserted in the opening, in the position of the close bimetal leaf of substrate one electric heater assembly is set.
2. snap-on according to claim 1 is characterized in that: described opening is "＜" type prong (3222).
3. snap-on according to claim 1 is characterized in that: described electric heater assembly (31) is the PTC ceramic heating element.
4. snap-on according to claim 1 is characterized in that: the length of postbrachium of having contact with device (322) is less than the length of the forearm that has contact with device (322).
5. snap-on according to claim 2 is characterized in that: the length of having contact with the postbrachium of device (322) is to have contact with the length 10-40% of the forearm of device (322).
6. snap-on according to claim 2 is characterized in that: the length of having contact with the postbrachium of device (322) is to have contact with the length 15-25% of the forearm of device (322).
7. snap-on according to claim 1 is characterized in that: described bimetal leaf is dish-shaped.
8. snap-on according to claim 1, it is characterized in that: described fixed point (323) and fastening devices (324) are wholely set with substrate (32), perhaps, described fixed point (323) and fastening devices (324) are spirally connected or are weldingly fixed on the bottom of substrate (32).
9. snap-on according to claim 1, it is characterized in that: described thermal drive snap locking device (3) further comprises a guard shield (34), described guard shield (34) is fixed on the substrate (32), offers one at guard shield one end and is convenient to have contact with the fluting (341) that forearm that device (322) stretches out moves.
10. snap-on according to claim 1 is characterized in that: on the door body, be provided with one cooperate the end crotch (3221) have contact with device (322) forearm have contact with connector (51).
11. snap-on according to claim 1 is characterized in that: the center of gravity of having contact with device (322) at the pivot on the fastening devices (324) between the end crotch (3221).
12. snap-on according to claim 1 is characterized in that: end crotch (3221) moves up and down.
13. snap-on according to claim 1 is characterized in that: when described lock is in closed condition, have contact with the length or the installation site of the forearm of device (322), the maximum slit that a body is opened is 2cm.
14. snap-on according to claim 1 is characterized in that: the inflexed radian of described crotch contains 1/2 surface area that a body has contact with connector (51) at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101355327A CN1991114B (en) | 2005-12-30 | 2005-12-30 | Initiative type thermal drive snap lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101355327A CN1991114B (en) | 2005-12-30 | 2005-12-30 | Initiative type thermal drive snap lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1991114A CN1991114A (en) | 2007-07-04 |
| CN1991114B true CN1991114B (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005101355327A Active CN1991114B (en) | 2005-12-30 | 2005-12-30 | Initiative type thermal drive snap lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1991114B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015139295A1 (en) * | 2014-03-21 | 2015-09-24 | Intel Corporation | Screwless cover design for computer systems and electronic devices |
| CN108946849B (en) * | 2018-07-20 | 2021-08-03 | 南京溧水高新产业股权投资有限公司 | Detachable distillation seawater desalination tank capable of preventing steam scald |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5271649A (en) * | 1992-12-31 | 1993-12-21 | Southco, Inc. | Over center draw latch with lock bolt action |
| CN2169197Y (en) * | 1993-06-26 | 1994-06-15 | 何新法 | Automatic protector for electric tool overloading |
| CN2386141Y (en) * | 1999-08-13 | 2000-07-05 | 胡义荣 | Hasp lock |
| CN2716313Y (en) * | 2004-09-08 | 2005-08-10 | 温州耀华电讯有限公司 | Safety device for electric control delay time door lock of washing machine |
-
2005
- 2005-12-30 CN CN2005101355327A patent/CN1991114B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5271649A (en) * | 1992-12-31 | 1993-12-21 | Southco, Inc. | Over center draw latch with lock bolt action |
| CN2169197Y (en) * | 1993-06-26 | 1994-06-15 | 何新法 | Automatic protector for electric tool overloading |
| CN2386141Y (en) * | 1999-08-13 | 2000-07-05 | 胡义荣 | Hasp lock |
| CN2716313Y (en) * | 2004-09-08 | 2005-08-10 | 温州耀华电讯有限公司 | Safety device for electric control delay time door lock of washing machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-252332A 1998.09.22 |
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| Publication number | Publication date |
|---|---|
| CN1991114A (en) | 2007-07-04 |
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Effective date of registration: 20210311 Address after: 266000 Haier Industrial Park, 236 qianwangang Road, Qingdao Economic and Technological Development Zone, Qingdao City, Shandong Province Patentee after: QINGDAO HAIER WISDOM KITCHEN APPLIANCE Co.,Ltd. Patentee after: HAIER GROUP Co.,Ltd. Address before: 1, Haier Road, Shandong, Qingdao (Haier Industrial Park) 266101 Patentee before: HAIER GROUP Co.,Ltd. Patentee before: QINGDAO HAIER DISHWASHER Co.,Ltd. |
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