CN2391529Y - Safety means for closing-opening cover of pressure-cooker - Google Patents

Abstract

A safety means for closing-opening cover of pressure-cooker comprises a self-locking valve comprised by a valve base and a sealing rod and a self-locking mechanism comprised by a guard plate and a spring. One end of the guard plate covers on the sealing rod which is provided with a self-locking hole; the other end is equipped with a guide rod whose lower terminal can enter the inner part of an arc guide slot equipped with a guide inlet of a lower handle. When the cooker cover is completely rejoining, the self-locking hole on the guard plate is just opposite to the sealing rod, and the sealing rod can be raised by air pressure to form the function of sealing. When the cooker cover is not rejoining, the guard plate presses on the sealing rod to make the cooker in exhaust condition. When the steam in the cooker is not exhausted, the sealing rod is not able to drop down, which makes it unable to open the cooker cover.

Description

Cover closing and opening safety device for pressure cooker

The utility model belongs to the pressure cooker auxiliary security and uses control device.

For fear of because of the improper contingency that causes of pressure cooker lid folding, the applicant once on May 28th, 1998 applied for that the patent No. is 98214955.7, name is called the patent of " pressure cooker open and close cover safeties ", it is provided with a self-locking mechanism on the usual pressure pot handle, when pot cover covers when not in place, pot inner pressure can not raise; When having pressure not arrange steam in the pot, pressure cooker is in self-locking state, and pot cover can not be opened, thereby has guaranteed the pressure cooker open and close process safe.But the guard plate more complicated in these safeties, inconvenient operation is damaged in the use easily.

It is a kind of simple in structure, easy to operate that the purpose of the utility model is to provide, the cover closing and opening safety device for pressure cooker of long service life.

The technical solution of the utility model is such: the self structure that its utilizes existing pressure cooker, latching valve is housed on pot cover, and latching valve is by valve seat and be contained in the seal bar that can move up and down in the valve seat and form, and has guide hole at handle on seal bar; Self-locking mechanism is housed in upper handle, and this self-locking mechanism comprises that having the spring that guide rod, front end place on the latching valve guard plate that can the parallel lines slippage and withstand on guard plate guide rod one side forms.Lower end of the guide rod embeds in the chute of lower handle, and chute is camber line shape or oblique line shape track, and it is not held and is provided with positioning table; Have self-locking hole on the guard plate; In the slipping, guard plate is left and right sides rectilinear translation above seal bar then in chute for guide rod, and when pot cover closes up, upper and lower handle is complete when overlapping, and guide rod rests on the positioning table, and the self-locking hole on the guard plate just and seal bar over against.

When pot cover and a pot body when not closing up, guard plate is pressed on the seal bar of latching valve, and seal bar can not rise, and is gapped and be in exhaust condition between seal bar and the valve base center hole, causes pot inner pressure not rise; In normal operation, the latching valve seal bar is by steam jack-up in the pot, and penetrates on the guide hole of guard plate self-locking hole and upper handle, and the seal bar bottom is enclosed on the valve base center hole; When steam in the pot does not discharge when finishing, seal bar does not fall, and guard plate can not move, and pot cover is in self-locking state and can't opens, thereby opens the contingency that pot cover causes under the situation of having avoided the pot internal gas pressure not eliminate effectively.

Obviously, the utlity model has easy to use, the safety coefficient height, advantage such as simple in structure, cost is low, and the life-span is long can be assemblied on the pressure cooker of various models and use.

Below in conjunction with embodiment shown in the drawings the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model when closing up fully.

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

Fig. 3 is the schematic diagram of the utility model when not closing up fully.

Fig. 4 is the A-A view of Fig. 3.

As shown in Figure 1, cover closing and opening safety device for pressure cooker comprises latching valve that is contained on the pot cover 1 and the self-locking mechanism that places in the upper handle 4.Latching valve is by valve seat 2 and place the upper and lower mobile seal bar 3 of valve seat 2 interior energy to form; Valve seat 2 usefulness elastomeric materials are made, and have cavity on it and are entrenched on the pot cover 1, and eck is arranged in the centre bore, leave the gap of 1-2mm between eck and the dress seal bar 3 thereon; Seal bar 3 bottoms have seal boss, and its diameter is greater than the diameter of cavity eck.The flange of slip-off preventing is arranged at the top of seal bar 3, has guide hole 12 on the upper handle 4 of flange top.Self-locking mechanism is made up of guard plate 5 and the spring 8 that withstands on the guard plate 5; Guard plate 5 one ends are stretched and are covered above latching valve, and have a self-locking hole 11 that cooperates greater than dilute phase with seal bar 3 thereon; The other end of guard plate 5 is provided with guide rod 9, and the centre of guide rod 9 is provided with groove, and an end of spring 8 places in the groove, and the other end withstands on the upper handle 6.Guide rod 9 lower ends embed in the guide groove 10 of lower handle, and guide groove 10 is camber line shape and introducing port is arranged, and guide groove 10 ends are provided with positioning table, referring to Fig. 2.Open in the process of closing at pot cover 1, guard plate 5 under the effect of guide rod 9, guide groove 10 and spring 8, move left and right; When pot cover 1 closes up fully, last lower handle 4,7 over against the time, the center of self-locking hole 11 is in guide hole 12 centers and seal bar 3 axis just.

When pot cover 1 did not close up fully with a pot body 8, shown in Figure 4 as Fig. 3, the self-locking hole 11 of guard plate 5 can not put in place, causes guard plate 5 to be pressed in all the time on the seal bar 3, seal bar 3 can not on move, make latching valve be in exhaust condition, a pot internal gas pressure can not rise.

When the pot inner vapor does not rack up fully and will open pot cover 1 by force; as long as pot inner pressure is greater than seal bar 3 deadweight gravity; seal bar 3 is through in the self-locking hole 11 of guard plate 5 all the time; do not fall; make guard plate 5 be stuck in guide groove 10 interior can not parallelly the moving of lower handle 7; cause pot cover 1 to open, thereby play the safeguard protection effect.

Claims (1)

1. A kind of cover closing and opening safety device for pressure cooker, comprise the latching valve that is contained on the pot cover (1) and place the interior self-locking mechanism of upper handle (4), latching valve is by valve seat (2) and be contained in the seal bar (3) that moves up and down in the valve seat (2) and form, upper handle (4) has guide hole (12) on the seal bar (3) relatively, self-locking mechanism is by having guide rod (9), the guard plate (5) of energy translation gliding and the spring (6) that withstands on guard plate (5) guide rod (9) are formed, guide rod (9) lower end embeds in the guide groove (10) of lower handle (7), it is characterized in that: guide groove (10) is camber line shape or oblique line shape, it is not held and is provided with positioning table, have self-locking hole (11) on the guard plate (5), this self-locking hole (11) is at pot cover (1) when closing up fully, just and seal bar (3) over against.

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