CN2178081Y - Safety device for opening or closing cover of pressure cooker - Google Patents

Abstract

The utility model relates to a lid-opening-closing safety device for a pressure cooker. The utility model is characterized in that when the lid of the cooker is not completely closed, pressure can not be raised; when the lid is opened, a lid-opening sliding key has to be pushed first, and the lid of the cooker can be opened only after pressure relief and self-locking relief, which realizes the function that the lid is safely opened and closed. The device is composed of a spring, a spring seat, a pressure relief pushing pin, the lid-opening sliding key, a blocking card, an upper and a lower handles. The device, which has reasonable structural design, reliable performance, simple manufacturing technique, convenient operation and avoidance of injury accidents caused by misoperation, is suitable for volume-produced safety device matches for pressure cookers.

Description

Safety device for opening or closing cover of pressure cooker

Cover closing and opening safety device for pressure cooker is to be used for preventing maloperation on the pressure cooker and a kind of very reliable safety device that causes casualty accident to take place.

The pressure cooker of selling on the market now, because of user's improper use, the explosion accident of build-up of pressure pot provides according to relevant department, and the annual whole nation takes place thousands of, wherein has the residual voltage maloperation to open in the not in place or pot of lid to cover because of closing, and the accident that causes accounts for the overwhelming majority.

The purpose of this utility model then is the problem at above-mentioned appearance, designed a kind of simple structure, easy to operate cover closing and opening safety device, close when covering, when pot cover must screw to the handle positions aligning with the pot body, the pot internal gas pressure just can rise to service pressure, otherwise pot inner pressure can not surpass 5KPa.When uncapping, must promote to uncap feather key, bleed off a pot interior residual voltage, untie self-locking action, pot cover just can be opened, and has effectively avoided the accident that causes because of misoperation.

The purpose of this utility model is achieved in that spring (3), spring base (4), pressure release ejector pin (5) pack in the sliding chamber of upper handle (1) successively, the feather key (6) of uncapping inserts the pressure release ejector pin (5) from top square hole, use block card (7) to pin then, whole difficult drop-off, upper handle integral body is fixed by bolts on the pot cover, and lower handle (2) is fixed on one's body the pot.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the assembling schematic diagram of package unit, is expressed as the situation of covering when putting in place of closing.

Fig. 2 is lower handle (2)

Only turn clockwise upper handle (1) when lower handle (2) aligns, just close and cover when putting in place, spring base (4) just can be subjected to the restriction of lower handle (2) chute (A) and retreat, spring (3) is compressed, eliminate the effect that promotes pressure release ejector pin (5), this moment, rubber seal can rely on self elasticity and the pot inner pressure shape that resiles, and played sealing function; And the lower end of pressure release ejector pin (5) enters in lower handle (2) the shelves grooves (B), and the chain location of upper handle (1) lower handle (2), the rotation of restriction handle plays preventing to have in the pot residual voltage to open by mistake lid, avoids the generation of casualty accident.

Upper handle (1) is with will open after lower handle (2) aligns the time, when just uncapping, feather key (6) must at first promote to uncap, allow pressure release ejector pin (5) force the rubber seal distortion, lose sealing function, bleed off a pot interior residual voltage, solved in the pot residual voltage has been arranged, the problem of uncapping and hurting sb.'s feelings, and the lower end of pressure release ejector pin (5) is simultaneously by deviating from lower handle (2) the shelves grooves (B), untie the chain positioning action of upper handle (1) lower handle (2), be rotated counterclockwise upper handle (1) and can open pot cover this moment.

When upper handle (1) and lower handle (2) are unjustified, just do not close lid or close lid when not in place, spring base (4) is under the effect that is subjected to spring (3), always that pressure release ejector pin (5) is extrapolated, because of pressure release ejector pin (5) front end corresponding with rubber seal, so rubber seal also is pushed distortion, thereby lose sealing function, be in the blow-by state,, avoid the generation of accident so can not boost.

The utility model on the handle of pressure cooker, has increased cover closing and opening safety device, except assurance prevents the generation of misoperation fault, and make the profile of pressure cooker novel more, cost increases few, it is extremely convenient to operate, and capturing on the pressure cooker safety issue, has made achievement.

Claims (2)

1, cover closing and opening safety device for pressure cooker, it is made up of upper handle (1), lower handle (2), spring (3), spring base (4), pressure release ejector pin (5), the feather key of uncapping (6), block card (7), it is characterized in that spring (3), spring base (4), pressure release ejector pin (5) pack in the sliding chamber of upper handle (1) successively, the feather key (6) of uncapping inserts the pressure release ejector pin (5) from upper aperture, use block card (7) to pin whole difficult drop-off then.

2,, it is characterized in that on the last plane of lower handle (2) that special design has sunk chute (A) and the retaining groove (B) that has hypotenuse according to the described cover closing and opening safety device of claim 1.

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