JPH073524U - Safety device for pressure cooker - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Pressurized only when the lid is completely attached,
If incomplete, pressurization in the pan is prevented. [Structure] When the lid 2 is rotated, the peripheral edges of the lid and the pot body 1 are fitted to each other in a concavo-convex manner, and the lid 2 has a float 4, a lid handle 5 and a lid handle 5 that is movable in the horizontal direction and has a tip. float
Safety device for pressure cooker equipped with slide plate 6 that can be engaged and disengaged with 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety device for a pressure cooker.

[0002]

[Prior art]

 As shown in FIG. 12, the lid handle (34) is attached to the peripheral edge of the lid (32) mounted on the pan body (31) by a so-called bayonet method, and the lid handle (34) is attached to the inside thereof at the base end side. A slide plate (36) is provided which is biased toward the base end side by the tension spring (35) arranged. Further, the slide plate (36) has a projection (37) formed on the lower surface on the base end side, and a through hole (38) into which a float (40) described below can be inserted is formed in a portion from the tip end. An oblique guide groove (38) is formed on the upper surface of the pan handle (39) attached to the peripheral portion of the pan body (31). Then, as the lid (32) is rotated when it is attached to the pan body (31), the projections (37) of the slide plate (36) resist the tension springs (35) and enter the guide grooves (38). By being guided and moved to the tip side of the slide plate (36), the slide plate (36) itself also moves to the tip side. When the internal pressure of the pan rises, the float (40) is pushed up, and the upper part thereof is inserted into and engaged with the through hole (38) of the slide plate (36). Therefore, even if it is attempted to open the lid (32) in this pressured state, the opening is prevented because the slide plate (36) and the float (40) are engaged. On the other hand, when the internal pressure is lowered, the float (40) is lowered and the engagement with the slide plate (36) is released, so that the lid (32) is opened (Japanese Utility Model Publication No. 61-32580 and See Japanese Utility Model Publication No. 63-6993).

[0003]

[Problems to be solved by the device]

 In the case of the pressure cooker, it is difficult to set the diameter of the through hole (38) at the tip of the slide plate (36) with respect to the diameter of the float (40) that rises during pressurization, specifically, the diameter of the float (40). On the other hand, if the diameter of the through hole (38) is slightly larger than this, if the position of the through hole (38) is slightly displaced when the float (40) rises, the float (40) will not slide. There is a risk of contact with the lower surface of (36). On the other hand, in order to prevent this, it is usual to make the diameter of the through hole (38) somewhat larger as shown in the figure, but in this case, the lid (32) is not rotated to a predetermined position and the pan body (31 ), The float (40) may rise and pressurize the inside of the pot even when it is imperfectly attached.

An object of the present invention is to provide a pressure cooker in which pressure is applied only when the lid is completely installed, and in the case where the lid is incompletely installed, pressurization in the pan is reliably prevented. It is to provide a safety device.

[0005]

[Means for Solving the Problems]

 The present invention has a plurality of outward convex portions provided at predetermined intervals on the peripheral edge of the pan body, and concave portions provided on the peripheral edge of the lid at regular intervals and between the outward convex portions on the peripheral edge of the pan body in the vertical direction. A plurality of inward projections that can pass through, a float that is penetrating through a valve hole formed near the peripheral edge of the lid and that moves up and down as the internal pressure of the pot increases and decreases, and has a recess and a tip end. It is attached to the lid covering the float and the base end of which projects outward from the peripheral edge of the lid, and is provided in the recess of the lid handle so as to be horizontally movable and the tip is detachable from the float. In a safety device of a pressure cooker equipped with a slide plate, the upper part of the float has a small diameter part and the lower part has a large diameter part, and the base part of the slide plate and the base end part of the lid handle are A push spring that urges the slide plate toward the tip is interposed, A wide cutout that allows the small diameter part and the large diameter part of the float to enter and a narrow cutout part that only the small diameter part of the float can enter are formed at the end. A long hole is formed in the moving direction of the slide plate, and a projection provided on the lower surface near the base end of the slide plate is projected downward from the long hole, and a pan is provided around the pan body corresponding to the lid handle. On the upper surface of the handle, there is a guide groove that extends obliquely in the direction opposite to the pot body from the portion near the pot body at one side edge and guides the protrusion of the slide plate.

In addition, according to the present invention, a stopper having a base end pivotally supported in a lid handle and a tip having a hook portion is provided below the slide plate, and the stopper is provided when the lid is turned upside down on the slide plate. A through hole is formed so that the hook portion of the can be hooked.

[0007]

[Action]

 According to the safety device of the pressure cooker of the present invention, when the lid is attached to the pot body, the lid is put on the upper opening of the pot body, and the inward projections of the lid are provided in the recesses between the outward projections on the periphery of the pot body. When the lid is passed through from above and the lid is rotated by a predetermined angle, the outward convex portions of the lid body engage with each other, so that the lid is airtightly attached to the pot body via the packing attached to the inner surface of the lid. When this lid is attached, the protrusion protruding on the lower surface of the lid handle is fitted into the guide groove on the one side edge of the upper surface of the pot handle, and by rotating the lid in this state, the protrusion extends outward. It is also guided outward along the guide groove. Therefore, the slide plate is completely retracted to the base end side, and is separated from the wide cutout portion at its tip with a slight distance. In this state, if the internal pressure rises due to the heating of the pan, the float is pushed up and the valve hole is closed by the lower seal part, so the inside of the pan is pressurized.

On the other hand, when the lid is not completely rotated by a predetermined angle at the time of attachment and the above-mentioned outward convex portions of the lid body are not sufficiently engaged with each other and the lid is not completely attached, the slide plate The protrusion remains in the middle of the guide groove, and the slide plate does not retract completely. Therefore, a part of the wide notch at the tip of the slide plate is approaching above the lower half of the float. Therefore, even if the internal pressure of the pot starts to rise in this state and the float begins to rise, the intermediate seal part immediately contacts the tip of the slide plate, so the float does not rise completely and the valve hole is not blocked. Therefore, the internal pressure of the pot will not rise.

In addition, for example, when the user flips the lid over to wash the lid, the lever is temporarily retracted by touching the slide plate, and when the hand is separated from the slide plate again, the lever is pressed by spring pressure. It is conceivable that the middle part of the float, which moves forward and descends due to gravity to close the valve hole, is accidentally pinched and the float is maintained in the ascending state. However, in the present invention, when the lid is turned upside down, the stopper provided below the slide plate lowers its tip side due to gravity, and the hook portion is inserted into the through hole of the slide plate. Therefore, the retreat of the slide plate itself is prevented, and the above situation does not occur. Then, when the lid is turned over again, the stopper again comes out of the through hole of the slide plate by gravity, and the engagement with the slide plate is released.

[0010]

【Example】

 Embodiments of the present invention will be described with reference to the drawings.

The safety device of the pressure cooker according to the present embodiment includes a plurality of outward convex portions (1a) provided at predetermined intervals on the peripheral edge of the pan body (1) and a hanging peripheral edge of the lid (2). A plurality of inward projections (2a) which are provided at predetermined intervals and which can vertically pass through the recesses (1b) between the outward projections (1a) on the periphery of the pan body (1), and the periphery of the lid (2). A float (4) which is penetratingly provided in a valve hole (3) formed nearby and moves up and down according to the increase and decrease of the inner pressure of the pot, and a recess (5d) whose tip covers the float (4). Mounted horizontally on the lid handle (2) and the base end of which protrudes outward from the peripheral edge of the lid (2) and moves horizontally into the recess (5d) of the lid handle (5). The float (4) is provided at its free end with the float (4) and the slide plate (6) that can be freely engaged and disengaged. The upper part of the float (4) is the small diameter part (4a) and the lower part is the large diameter part. (4b) The base of the slide plate (6) and the lid handle ( A push spring (7) for urging the slide plate (6) toward the tip is interposed between the base ends of the slide plate (6) and the tip of the slide plate (6) has a small diameter portion (4a) and a large diameter portion (4a) of the float (4). A wide cutout (7) into which the diameter portion (4b) can enter, and a narrow cutout (8) into which only the small diameter portion (4a) of the float can enter are formed following the wide cutout, and the lid handle ( 5) A long hole (5a) is formed in the lower wall of the slide plate (6) in the moving direction, and a projection (9) provided on the lower surface of the slide plate (6) near the base end is formed from the long hole (5a). The top of the pan handle (10), which protrudes downward and is provided at the periphery of the pan body (1) corresponding to the lid handle (5), is located on the top of the pan body (1) at one side edge of the pan body (1). It has a guide groove (11) that extends diagonally in the opposite direction to 1) and guides the protrusion (9) of the sliding plate (see Fig. 11).

The lid handle (5) is attached to the peripheral portion of the lid (2) by a screw (13a) via an inverted L-shaped attachment fitting (13), and a stopper described below on the inverted L-shaped attachment fitting (13). (12) is pivotally supported. Further, a window hole (5c) into which the upper end of the float is inserted is formed in the upper wall (5b) of the lid handle (5).

The slide plate (6) is in a bent form having a vertical portion (6c) between the front end side horizontal portion (6a) and the base end side horizontal portion (6b), and is formed in a bent shape with the outer surface of the vertical portion (6c). A push pin (7) is arranged between the inner surfaces of the lid handle (5), and a protrusion (9) is integrally fixed to the lower surface of the proximal end side horizontal portion (6b).

The float (4) is accommodated in a bush (14) which constitutes a valve hole (3) attached to the lid (2), and an intermediate seal part (4c), in the middle of the float (4), A lower seal portion (4d) is formed at the lower end.

Below the slide plate (6), a base end is pivotally supported in the lid handle (5), and a stopper (12) having a hook portion (12a) is provided at the tip, and the slide plate (6) is ) Has a through hole (6d) to which the hook (12a) of the stopper (12) is locked when the lid (2) is turned over.

In the figure, (15) shows a packing fitted on the inner surface of the peripheral portion of the lid (2), and (16) shows a safety valve provided at the center of the lid (2).

Next, an operation procedure of the safety device for the pressure cooker according to the configuration of the above-described embodiment will be described.

When the lid (2) is not yet attached to the pan body (1), as shown in FIG. 1, the slide plate (6) is moved forward by the push spring (7) while the float (4) is It is falling because there is no internal pressure. Therefore, the small-diameter portion (4a) of the float (4) enters the narrow cutout portion (8) at the tip of the advanced slide plate (6) (see FIG. 2). Therefore, even if the float (4) is pushed up by hand, the intermediate seal part (4c) does not move against the lower surface of the slide plate (6).

When attaching the lid (2) to the pan body (1), first, as shown in FIG. 3, the upper opening of the pan body (1) is covered with the lid (2). The inwardly projecting portion (2a) of the lid is passed from above into the recessed portion (1b) between each outwardly projecting portion (1a) at the periphery of the main body (1). Then, if the lid (2) is rotated by a predetermined angle, the pot main body (1) and the outward convex portions (1a) (2a) of the lid (2) engage with each other, so that the lid (2) is packed (15). It is attached to the pan body (1) airtightly via. When installing this lid, insert the protrusion (9) protruding from the bottom surface of the lid handle (5) from one side edge of the guide groove (11) on the top surface of the pot handle (10) of the pan body (1). By the rotation of the lid (2), the protrusion (9) is also guided outward along the guide groove (11) extending outward. Therefore, as shown in FIGS. 4 and 5, the slide plate (6) is completely retracted, and the wide notch (7) at its tip is separated from the float (4) by a slight distance. . In this state, if the internal pressure rises due to heating of the pan, the float (4) is pushed up, and the lower seal part (4d) closes the valve hole (3) and pressurizes it.

In the above-mentioned pressurized state, if the user accidentally tries to open the lid (2) and rotates the lid in the opposite direction to the above-mentioned mounting, the guide is guided by the protrusion (9) of the slide plate (6). A force to move it forward along the groove (11) acts, but at this time, as shown in FIGS. 6 and 7, the slide plate (6) is in a raised state, and the large diameter portion (4b) of the float (4). The lid (2) does not rotate because it immediately contacts the. Therefore, there is no risk that the lid (2) will be opened by the user during pressurization.

In addition, the lid (2) is not completely rotated by a predetermined angle at the time of attachment, and the above-mentioned outward convex portions (1a) (2a) of the pan body (1) and the lid (2) are not engaged with each other. If it is sufficient and the lid (2) is incompletely installed, the protrusion (9) of the slide plate (6) will remain stopped in the middle of the guide groove (11) and the slide plate (6) will completely retract. Therefore, as shown in FIGS. 8 and 9, a part of the wide notch (7) at the tip of the slide plate (6) is approached above the large diameter part (4b) of the float. Becomes Even if the inner pressure of the pot starts to rise and the float begins to rise in this state, the intermediate seal part (4c) immediately contacts the tip of the slide plate (6), so the float (4) does not rise and the valve hole (3) is not blocked. Therefore, the internal pressure of the pot does not rise. In other words, if the lid (2) is not attached properly, the internal pressure of the pan will not rise and it is safe. Incidentally, although the inner pressure of normal pressurization is about 1Kg / cm ^2, in the above case it rises only to about 0.07 kg / cm ^2.

In addition, for example, when the user turns over the lid (2) to wash it, the slide plate (6) is touched by the hand, the lever is temporarily retracted, and the hand is again removed from the slide plate (6). When separated, the lever moves forward and drops by gravity, and the intermediate seal part (4c) of the float (4) that closed the valve hole (3) is accidentally pinched and the float (4) is maintained in the raised state. It is possible that it will be done. However, in the present embodiment, as shown in FIG. 10, when the lid (2) is turned over, the stopper (12) provided below the slide plate (6) is lowered by gravity and its tip side is lowered, resulting in a hook. The part (12a) is inserted into the through hole (6d) of the slide plate (6). Therefore, the retreat of the slide plate (6) is prevented, and the above situation does not occur. Then, when the lid (2) is turned over again, the stopper (12) is again removed from the through hole (6d) of the slide plate (6) by gravity, and the engagement with the slide plate (6) is released.

[0023]

[Effect of device]

 According to the safety device of the pressure cooker of the present invention, the inside of the pan is pressurized only when the lid is completely installed, while the pressure inside the pan is reliably prevented when the lid is not completely installed. Be done. Further, even if the user accidentally tries to open the lid during pressurization, that is prevented.

Further, when a stopper is provided at the bottom of the slide plate, the stopper works when the lid is turned over and washed to prevent the slide plate from being moved by the user. Useless engagement with the plate tip is also prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a safety device according to the present invention before a lid is attached.

FIG. 2 is a partially cutaway plan view of a lid handle before the lid is attached.

FIG. 3 is a partial plan view showing an engaging structure of a pan body and a lid.

FIG. 4 is a sectional view of an essential part of the safety device of the present invention when the lid is completely attached.

FIG. 5 is a partially cutaway plan view of a lid handle when the lid is completely attached.

FIG. 6 is a cross-sectional view of essential parts of the safety device of the present invention when the lid is about to be opened during pressurization.

7 is a partially cutaway plan view of the lid handle in FIG. 6. FIG.

FIG. 8 is a sectional view of an essential part of the safety device according to the present invention when the lid is incompletely attached.

9 is a partially cutaway plan view of the lid handle in FIG. 8. FIG.

FIG. 10 is a sectional view showing the engagement of a stopper according to the present invention.

FIG. 11 is a plan view of a pan handle.

FIG. 12 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 (1) Pan body (1a) Outward convex part (1b) Recessed part (2) Lid (2a) Inward convex part (3) Valve hole (4) Float (4a) Small diameter part (4b) Large diameter part (5) Lid handle (5a) Slot (5d) Recess (6) Slide plate (6a) Through hole (7) Wide cutout (8) Narrow cutout (9) Protrusion (10) Pan handle (11) Guide groove (12) Stopper (12a) Hook

Claims (2)

[Scope of utility model registration request] 1. A plurality of outward convex portions (1a) provided at predetermined intervals on the peripheral edge of the pan body (1), and a pan body (1a) provided at regular intervals on the depending peripheral edge of the lid (2). 1) A plurality of inward projections (2a) that can pass vertically through the recesses (1b) between the outward projections (1a) on the peripheral edge, and a valve hole (3) formed near the peripheral edge of the lid (2). It has a float (4) that is provided in a penetrating manner and that moves up and down with the increase and decrease of the internal pressure of the pan, and has a recess (5d) and the tip of the float
It is mounted on the lid (2) covering the (4) and the base end is covered.
The lid handle (5) protruding outward from the peripheral edge of (2) and the lid handle
A slide plate that is provided in the recess (5d) of (5) so as to be movable in the horizontal direction, and the tip of which is detachable from the float (4).
In a safety device for a pressure cooker including (6), the upper part of the float (4) is a small diameter part (4a) and the lower part is a large diameter part (4b).
A push spring (7) for urging the slide plate (6) toward the tip is interposed between the base of the slide plate (6) and the base end of the lid handle (5), and the tip of the slide plate (6) is The wide notch (7) allows the small diameter part (4a) and the large diameter part (4b) of the float (4) to enter.
A narrow cutout (8) is formed next to the wide cutout so that only the small diameter portion (4a) of the float can enter, and a long cut is formed in the lower wall of the lid handle (5) in the moving direction of the slide plate (6). A hole (5a) is formed, and a protrusion (9) provided on the lower surface of the slide plate (6) near the base end projects downward from the long hole (5a), corresponding to the lid handle (5). (1) On the upper surface of the pan handle (10) provided on the periphery, the pan body (1) on one side edge of the pan handle (1)
A safety device for a pressure cooker, which is provided with a guide groove (11) that extends obliquely in the opposite direction and guides the protrusion (9) of the slide plate. 2. The lower end of the slide plate (6) has a lid handle at the base end.
(5) A stopper (12) having a hook (12a) is provided at the tip of the slide plate (6) and the lid (2) is attached to the slide plate (6).
The safety device for the pressure cooker according to claim 1, wherein a through hole (6d) is formed to which the hook portion (12a) of the stopper (12) is hooked when the stopper is turned over.