CN2281735Y - Safety device for opening and closing lid of pressure cooker - Google Patents

Abstract

The utility model discloses a safety device for an opening and closing lid of a pressure cooker. A cavity is arranged in an upper handle of the pressure cooker, wherein a pressure maintaining bolt, a position locking spring, a position locking pin, a position opening pin and a position opening spring are arranged in the cavity. A lower handle is provided with two slide ways. When the utility model is used, the pressure of the pressure cooker can rise as long as the cooker cover and the cooker body are closed in a unique limited position, and the pressure can not rise when the cooker cover and the cooker body are closed at any other position or not closed in place. When the cooker cover is opened, a finger pushing key can be pushed firstly. The cooker cover can be opened when a self-locking is unlocked after decompression. The utility model has the advantages of artful design, easy use and safe and reliable work. The utility model is a safe and effective device for preventing accidents generated by the misoperation of the opening and closing of pressure cookers.

Description

Cover closing and opening safety device for pressure cooker

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

It is commonplace that pressure cooker uses in daily life, but blast also can appear sometimes, trace it to its cause, mostly be improper use greatly, for example, pot cover closes not in place, there is pressure to uncap etc. in the pot and all can causes some accidents, in order to prevent the generation of this phenomenon, at present more existing producers and individual have designed several cover closing and opening safety device for pressure cooker, immediate with the utility model is the utility model patent of being applied for by the 9408 factory of the Chinese People's Liberation Army " cover closing and opening safety device for pressure cooker ", the patent No. of this part patent is: 93232214, notification number is: 2178081, this device is by spring, spring base, the pressure release ejector pin, the feather key of uncapping, block card, last lower handle is formed, when pot cover closes when not in place, the pressure release ejector pin heads on sealing ring, make the sealing ring distortion, thereby pressure cooker is not risen, must at first promote the feather key of uncapping when uncapping, remove self-locking after the pressure release and can open pot cover, this device can prevent to a certain extent since pot cover closes not in place or pot in band press off the accidents that cause such as lid, but it also exists some shortcomings: at first reliability is not high, this device has only the relative position when pot cover and pot body just to work within the specific limits, surpasses this scope and just can not work; The second, poor durability, the frequent roof pressure sealing ring of pressure release ejector pin can make the sealing ring distortion, damage, thereby cause pressure cooker normally not use; The 3rd, use trouble, when closing pot cover, at first must push the feather key of uncapping open, the pot cover that closes just can make device be in self-locking state.

The purpose of this utility model will provide a kind of reliability height, easy to use, long-lived cover closing and opening safety device for pressure cooker exactly.

For achieving the above object, the utility model adopts technical scheme as described below: it comprises pot cover, the pot body, upper handle, lower handle, the pressurize bolt, the lock-bit spring, refer to push button, the pressurize bolt is arranged in the cavity of upper handle, the pressurize bolt tightens and is connected with pin, the hole that the front end of pressurize bolt passes the pot cover sidewall reaches the pot cover inboard, front end at the pressurize bolt of pot cover inboard has a block plate, be with a seal washer on the block plate, the lock-bit spring is enclosed within on the pressurize bolt between pin and the pot cover sidewall, the hole that strip is arranged on the upper handle, the draw-in groove that refers to push button is in the place, strip hole on upper handle top and the top tight fit of pin, also be sliding combined with one on the pressurize bolt and open the position pin, open on the pressurize bolt of selling the rear portion in the position and be with out a spring, open the coefficient of stiffiness of the coefficient of stiffiness of a spring, open on the anterior pressurize bolt of position pin and be fixedly connected with a block greater than the lock-bit spring; Two chutes are arranged on the lower handle, chute near pot body one side is vertical with the axis of symmetry of lower handle, the top of this chute latch recess that extended back, this chute matches with pin, therefore claim that it is the lock-bit chute, another chute is the strip groove after oblique, and it matches with opening the position pin, therefore claims it for opening a chute, when pot cover is in released state with pot, owing to open the coefficient of stiffiness of the coefficient of stiffiness of a spring greater than the lock-bit spring, open the position pin and pushed away forward, open the position pin and run into and can drive the pressurize bolt behind the block and move forward, at this moment, just there has been certain clearance in the seal washer of pressurize bolt front end and the hole of pot cover sidewall, make pot can not be in sealing state, when closing when covering, malposition or close when not in place, equally also be in above-mentioned state, pressure cooker does not just rise pressure in use, thereby has also avoided accident potential.When closing by correct method when covering, pin enters the lock-bit chute respectively and opens a chute with a bottom of opening the position pin, be rotated further pot cover, opening the position pin chute of opening after oblique moves, opening the position pin just moves backward in the position of upper handle, open the just block on the roof pressure pressurize bolt no longer of position pin, and leave certain distance with this block gradually, when pot cover was incorporated into the top of chute, the lock-bit spring promoted pin and enters latch recess, and pressurize this moment bolt also is being with backward to move, the seal washer of pressurize bolt front end can be tight with the hole sealing of pot cover sidewall, pressure cooker just can normally use like this, needs when uncapping at first to promote to refer to push button, and pin is released latch recess, can open lid, if in this moment pot small part residual compression is arranged, also can release, if promote to refer to big than usual many of push button sensation strength by the hole of pot cover sidewall, just do not open pot cover firmly this moment, because pot inner pressure is bigger at this moment, need find out reason, bleed off pressure and just can open pot cover.

Adopt the cover closing and opening safety device for pressure cooker of this structure, structural design is ingenious, easy to use, safe and reliable, is to prevent the pressure cooker open and close maloperation and the device safely and effectively that has an accident.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is that pot cover and pot body close the structural representation of the present utility model under the state not in place.

A structural representation of the present utility model when Fig. 2 is incorporated into for pot cover and a pot body.

Fig. 3 is the vertical view of lower handle.

With reference to Fig. 1, Fig. 2, Fig. 3.Cover closing and opening safety device for pressure cooker comprises pot cover 1, pot body 18, upper handle 6, lower handle 7, one cavity is arranged in the lower handle, pressurize bolt 11 is arranged in this cavity, lock-bit spring 14, pin 12, open position pin 4, open a spring 5, the hole 15 that the front end of pressurize bolt 11 passes the pot cover sidewall reaches the pot cover inboard, front end at the pressurize bolt of pot cover inboard has a block plate 16, be with a seal washer 17 on the block plate, seal washer selects for use elastomeric material to make, in order to prevent to enter after the interior heat steam of pot from spraying from hole 15 cavity of upper handle, there is hood 2 position in the hole 15 of close pot cover sidewall on upper handle, pin 12 is fastenedly connected on the pressurize bolt, lock-bit spring 14 leans against on the pressurize bolt between pin 12 and the hood 2, open and porosely on the position pin 4 be slidingly matched with the pressurize bolt, opening 5 of springs is enclosed within out on the pressurize bolt at pin rear portion, open on the pressurize bolt of selling 4 front portions in the position and be fixedly connected with a block 13, open the coefficient of stiffiness of the coefficient of stiffiness of a spring 5 greater than lock-bit spring 14, upper handle has the hole of strip, refers to the top tight fit of the draw-in groove of push button 3 at this place, strip hole and pin.Need to prove in addition: the position of block 13 on the pressurize bolt can coincide with pin position pin 12, opens pin 4 direct roof pressure pin positions, position pin 12 this moment and equally also can serve the same role.

Chute 10,20 is arranged on the lower handle 7, the top of chute 10 latch recess 9 that extended back, chute 20 is the strip groove after oblique.

When pot cover is in released state with pot, owing to open the coefficient of stiffiness of the coefficient of stiffiness of a spring 5 greater than lock-bit spring 14, opening position pin 4 is pushed away forward, opening position pin runs into and can drive the pressurize bolt behind the block 13 and move forward, at this moment, the seal washer 17 of pressurize bolt front end has just had certain clearance with the hole 15 of pot cover sidewall, make pot can not be in sealing state, when closing when covering, malposition or close when not in place, equally also be in above-mentioned state, pressure cooker does not just rise pressure in use, thereby has also avoided accident potential.When closing by correct method when covering, pin 12 enters chute 10, open position pin 4 inlets 8 and enter this chute from chute 20, when rotating pot cover, opening the position pin chute 20 after oblique moves backward, open the just block 13 on the roof pressure pressurize bolt no longer of position pin, and leave certain distance with this block gradually, when opening position pin and slide into the top 19 of chute 20, pin 12 also arrives the top of chute 10, lock-bit spring promotion this moment pin enters latch recess 9, pressurize this moment bolt also is being with backward to move, and the seal washer 17 of pressurize bolt front end can be tight with the hole sealing of pot cover sidewall, and pressure cooker just can normally use like this, need when uncapping at first to promote to refer to push button 3, pin is released latch recess 9, and the rotation pot cover can be opened, if in the pot small part residual compression is arranged this moment, also can release by the hole of pot cover sidewall, if promote to refer to big than usual many of push button sensation strength, just do not open pot cover firmly this moment, because this moment, the possibility pot inner pressure was bigger, need find out reason, bleed off pressure and just can open pot cover.

Claims (3)

1, a kind of cover closing and opening safety device for pressure cooker, it comprises pot cover (1), pot body (18), upper handle (6), lower handle (7), pressurize bolt (11), lock-bit spring (14) and refers to push button (3), it is characterized in that: pressurize bolt (11) tightens and is connected with pin (12), the hole (15) that the front end of pressurize bolt (11) passes the pot cover sidewall reaches the pot cover inboard, front end at the pressurize bolt of pot cover inboard has a block plate (16), is with a seal washer (17) on the block plate (16); Lock-bit spring (14) is enclosed within on the pressurize bolt between pin (12) and the pot cover sidewall; Also be sliding combined with one on the pressurize bolt (11) and open position pin (4), open on the pressurize bolt (11) of selling the rear portion in the position and be with out a spring (5); Open the coefficient of stiffiness of the coefficient of stiffiness of a spring (5) greater than lock-bit spring (14); Open on the anterior pressurize bolt of position pin (4) and be fixedly connected with a block (13); Chute (10), (20) are arranged on the lower handle (7), the top of chute (10) latch recess (9) that extended back, chute (20) is the strip groove after oblique.

2, cover closing and opening safety device for pressure cooker according to claim 1 is characterized in that: there is hood (2) position that upper handle (6) is gone up near the hole (15) of pot cover sidewall.

3, cover closing and opening safety device for pressure cooker according to claim 1 is characterized in that: block (13) fixedly connected on the pressurize bolt can coincide with pin position pin (12).

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