CN2238001Y

CN2238001Y - Safety device for opening or closing cover for pressure cooker

Info

Publication number: CN2238001Y
Application number: CN 95225443
Authority: CN
Inventors: 竺苗兴; 刘增伟; 郑芳年
Original assignee: NINGHAI COUNTY ENAMEL AND ALUMINIUM PRODUCTS FACTORY
Current assignee: NINGHAI COUNTY ENAMEL AND ALUMINIUM PRODUCTS FACTORY
Priority date: 1995-11-03
Filing date: 1995-11-03
Publication date: 1996-10-23
Anticipated expiration: 2005-11-03

Abstract

The utility model relates to a safety device for the opening-closing lid of a pressure cooker, comprising a locking pin mechanism which is installed on the cooker lid of the pressure cooker, an upper handle (11) and a lower handle. The utility model is characterized in that the upper end of the front part of the upper handle (11) is provided with a locking pin hole (5) which aims at a locking pin seat; the inside of the handle is provided with a broken-angle-shaped movable guide plate (10) which is supported by a restoring spring (9), and the front end of the upper part thereof is also provided with a locking pin hole (6) which aims at the locking pin hole (5) when the lid is closed; the lower part of the movable guide plate (10) is provided with a convex column which protrudes out of the lower end face of the upper handle (13) and extends into a tapered slot (18) on the lower handle (13). The utility model, which has simple structure, convenient manufacture and installation, can be packaged separately like a conventional pressure cooker, and the actions of the lid being opened and closed are completed once.

Description

Cover closing and opening safety device for pressure cooker

The utility model relates to a kind of pressure cooker safety servicing unit, particularly a kind of cover closing and opening safety device for pressure cooker.

At present, most of pressure cookers in use remain old-fashioned pressure cooker the earliest, the safe servicing unit that does not have other a slice safety plate on pot cover, when reality is used, must the cooling pan body or take off pressure limiting valve and emit a steam in the pot, after making pot inside and outside air pressure balance, just can open pressure cooker cover, open pot cover else if by force, steam in the pot can be with the unexpected jack-up of pot cover, cause the injury of human body or to the damage of other article, owing to there is not reliable safe servicing unit, this situation happens occasionally in actual life.At this problem, many pressure cooker manufacturers have developed the safety device of pressure cooker open and close cover successively, its basic technical scheme is all increasing a self-locking mechanism between the lower handle on the usual pressure pot, " pressure cooker use safeties " the disclosed self-locking mechanism that as China Patent No. is ZL94206278.7 is by being contained in the safety valve (latch gear) on the pot cover and being contained in push pedal on the dual-handle, safety pole, spring and push rod are formed, safety valve (latch gear) is made up of rubber seal seat and dress valve rod moving up and down within it, when still having pressure in the pressure cooker, the safety pole of safety valve pushes up under the steam pressure effect, stretch into the aperture in the push pedal, push pedal can't be moved and self-locking, thus the generation of the action of stopping to uncap by force.But this scheme still exists a plurality of defectives: 1. because the automatically replying of spring, so pressure cooker when uncapping, need first overcome spring force with the finger push push pedal after, the dislocation that just can carry out next step action of uncapping; 2. its safety valve adopts rubber and seals with the face way of contact, and poor sealing performance runs vapour easily; 3. the chute complex structure on the lower handle; 4. upper handle directly is fixed on the pot cover periphery by two pieces of screws from inside to outside, and is loosening easily.And handle arrangement complexity generally, the user is difficult to install voluntarily, just can dispatch from the factory after must integral installation good, and this has increased packing and freight again.

The purpose of this utility model provides a kind of simple in structure, folding lid action simple and reliable cover closing and opening safety device for pressure cooker at the defective that exists in the above-mentioned prior art to society with regard to being.

The purpose of this utility model is achieved in that cover closing and opening safety device for pressure cooker comprises the latch gear that is installed in the pressure cooker lid top, be fixed on the upper handle of pot cover side and be fixed on pot lower handle of body sidewall, latch gear is by locking pin seat and be positioned at its lock pin movable up and down and constitute, the upper handle nock has the lockpin hole of aiming at locking pin seat, the knuckle type activity guide plate that has back-moving spring to support in the handle, its top front end also has a lockpin hole, the bottom then has the projection that protrudes in the upper handle lower surface to stretch into skewed slot on the lower handle, when last lower handle is harmonious, skewed slot guide effect at lower handle, the projection reach also is that movable guide plate protracts, make its front end lockpin hole just in time aim at the lockpin hole of locking pin seat and upper handle, so when the pressure in the pressure cooker reaches certain value, lock pin is at steam pressure effect float downward, stretch into the lockpin hole of described movable guide plate and upper handle, thus pinning activity guide plate and upper handle.

In order to strengthen sealing effectiveness, described locking pin seat can be made up of locking pin seat that is positioned at the pot cover inboard that is threaded mutually and the outer locking pin seat that is positioned at the pot cover outside, described lock pin can tightly be with the O RunddichtringO in periphery, lock pin pins handle under the steam pressure effect when the O-ring seals of its periphery with outside the interior omoplate of locking pin seat be close to mutually and seal.

Compared with prior art, of the present utility model simple in structure, make easy for installation, can be as conventional pressure cooker split packing, in use the folding lid move settle at one go also consistent with conventional pressure cooker, and good seal performance, long service life.

Description of drawings.

Fig. 1 is a structure cross-sectional schematic of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Fig. 4 is the C-C cutaway view of Fig. 1.

Fig. 5 is the vertical view of movable guide plate (10) among Fig. 1.

Below in conjunction with the accompanying drawing most preferred embodiment the utility model is described in further detail.

Shown in Fig. 1-4, cover closing and opening safety device for pressure cooker mainly comprises latch gear, upper handle (11) that is fixed on the pot cover side that is installed in the pressure cooker lid top and lower handle (13) three parts that are fixed on a pot body (17) sidewall.

Latch gear is installed in the top of pressure cooker lid (1), by locking pin seat be positioned at its lock pin movable up and down (4) and constitute, can directly adopt the scheme of prior art, but locking pin seat is made up of locking pin seat that is positioned at the pot cover inboard (2) that is threaded mutually and the outer locking pin seat (3) that is positioned at the pot cover outside then in this most preferred embodiment; Interior locking pin seat (2) can adopt a hex nut, and the bottom has the aperture of diameter less than lock pin (4), perhaps in the bottom, side opens a plurality of ventilative apertures and also can; Outer locking pin seat (3) is the nut of " П " font and central openings for the cross section, and the connecting portion of its external flange and pot cover (1) is lined with packing ring, and there is omoplate in an inboard, and lock pin (4) is analysed and observe and is " protruding " font, and can tightly be with the O RunddichtringO in its step place periphery.Such structure makes locking pin seat and lock pin can adopt metal material, thereby increases the service life.

Upper handle (11) nock has the lockpin hole (5) of aiming at locking pin seat, the knuckle type activity guide plate (10) that has back-moving spring (9) to support in the handle, and its top front end also has a lockpin hole (6), and the projection that protrudes in upper handle (11) lower surface is arranged at the bottom; The fixed form of upper handle (11) can adopt prior art, fix by two pieces of long spiro nails from inside to outside, at this moment spring (9) can be enclosed within one simply and is fixed in movable guide plate (10) vertically the screw at position is outer and spacing (expression in the accompanying drawing), but for to make the user can adopt the screw of traditional ecto-entad to install and fix mode when mounted, this most preferred embodiment be connected at pot cover (1) side (riveted joint or welding) a butterfly upper handle seat (8) is arranged, comprise a horizontal upper flange and a central boss, by two pieces of short screws (14) upper handle (11) and this wing plate are fixed, long spiro nail (12) then fixes upper handle (11) and this projection from passing movable guide plate (11) outside to inside, back-moving spring (a 9) then end is supported in the projection bottom of upper handle seat (8), the other end is supported in the shrinkage pool of movable guide plate (11) correspondence position, as Fig. 1, shown in 4.This fixed form not only can allow the user install but also do not influence the sealing of pressure cooker easily voluntarily.

Lower handle (13) end face thereon has the skewed slot (18) that can slide for the following projection of described movable guide plate within it, it can be an oblique straight trough, also can be illustrated in figure 3 as the combination slot of a sector, the extend outwards wire clamp angle of its incline direction and handle is an acute angle, with 60 ° be the best, as shown in Figure 3, for strengthening fixed effect, can adopt conventional art, rivet handle set (16), lower handle (13) is fixed on the lower handle seat (16) with screw (15) at pot body sidewall.

When the pressure cooker lid that closes is harmonious lower handle, skewed slot (18) guide effect at lower handle, the projection reach of drive activity guide plate (10), whole movable guide plate (10) is protracted, fit like a glove until last lower handle and to put in place, at this moment the lockpin hole of movable guide plate (6) is just in time aimed at the lockpin hole (5) of locking pin seat and upper handle, so it is (relevant with the weight of lock pin that the pressure in pressure cooker reaches setting value, generally be made as 5KPa) time, lock pin (4) is at steam pressure effect float downward, stretch into the lockpin hole (6) of described movable guide plate and upper handle, (5), thus pinning activity guide plate (10) and upper handle (11); And have only when pot inner pressure less than when setting value, lock pin (4) resets, just remove self-locking, at this moment promptly can stagger and go up lower handle, the projection of movable guide plate (10) moves after under skewed slot (18) guide effect of lower handle, under back-moving spring (9) effect, whole movable guide plate (10) retreats and resets, and uncaps simultaneously.If simultaneously lower handle does not fit like a glove and puts in place on closing when covering, lockpin hole (6) on the movable guide plate just can not aimed at locking pin seat fully, so lock pin (4) can't float fully, steam can be discharged through the lockpin hole (5) of locking pin seat and upper handle in the pot, so again can strict limited subscriber closing the lid action must put in place, stop the generation of contingency, for realizing this function better, a less steam vent is opened in lockpin hole (6) the place ahead that is preferably in described movable guide plate again, circular hole or long and narrow hole all can, (19) as shown in Figure 5.

Claims

1. cover closing and opening safety device for pressure cooker, comprise the latch gear that is installed in the pressure cooker lid top, be fixed on the upper handle (11) of pot cover side and be fixed on pot lower handle of body sidewall (13), latch gear is by locking pin seat and be positioned at its lock pin movable up and down (4) formation, it is characterized in that upper handle (11) nock has the lockpin hole (5) of aiming at locking pin seat, the knuckle type activity guide plate (10) that has back-moving spring (9) to support in the handle, its top front end also has a lockpin hole (6), and closing under the state of lid, when last lower handle is harmonious, align with described lockpin hole (5), the bottom of movable guide plate (10) then has the projection that protrudes in upper handle (13) lower surface to stretch into skewed slot (18) on the lower handle (13).

2. cover closing and opening safety device for pressure cooker as claimed in claim 1 is characterized in that described locking pin seat is made up of locking pin seat that is positioned at the pot cover inboard (2) that is threaded mutually and the outer locking pin seat (3) that is positioned at the pot cover outside.

3. cover closing and opening safety device for pressure cooker as claimed in claim 1 or 2 is characterized in that described lock pin (4) is analysed and observe and is " protruding " font, and tightly is with the O RunddichtringO in its step place periphery.

4. cover closing and opening safety device for pressure cooker as claimed in claim 1, the skewed slot (18) that it is characterized in that described lower handle (13) is an oblique straight trough.

5. cover closing and opening safety device for pressure cooker as claimed in claim 1 is characterized in that the skewed slot (18) of described lower handle (13) is the combination slot of a sector.

6. as claim 4 or 5 described cover closing and opening safety device for pressure cooker, it is characterized in that described skewed slot (18) angle of inclination is 60 °.

7. cover closing and opening safety device for pressure cooker as claimed in claim 1 is characterized in that described pot cover (1) side is fixed with a butterfly upper handle seat (8), installs and fixes upper handle (11) by screw (12), (14).

8. cover closing and opening safety device for pressure cooker as claimed in claim 1 is characterized in that described movable guide plate (10) has steam vent (19) in its lockpin hole (6) the place ahead.