JP2009172018A - Pressure cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure cooker by which lock by a plurality of lock mechanisms can be simultaneously operated or released thereby can prevent a dangerousness that the pressure is released from only one position by releasing only a part of the lock and a lid body, a container, a fastener, or the like can be prevented from breaking. <P>SOLUTION: The pressure cooker includes the plurality of lock mechanisms attached along the outer peripheral face of the opening portion of the container and securing the lid body to the container in a closing position, wherein the lock mechanisms is constituted of a plurality of lid body side clutch pawls secured along the outer peripheral face of the lid body, container side clutch pawls secured to the positions corresponding to the lid side clutch pawls respectively, a plurality of engaging members engaging with the lid side clutch pawls and engaging with the container side clutch pawls by sliding along the outer peripheral face of the container, and a drive mechanism sliding the engaging members, and wherein the engaging members are connected with each others by coupling members. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pressure cooker having a mechanism that locks a lid in a closed state, and more particularly to a pressure cooker that enables simultaneous operation or release of locks by a plurality of lock mechanisms.

  The pressure cooker seals the container and lid so that air and liquid do not escape, and by heating, the boiling point of the sealed liquid is increased to increase the pressure in the cooker above atmospheric pressure, for example cooking. The internal pressure can be increased to about 1.4 to 1.5 atmospheres. Since the pressure in the cooker can be increased, cooking at around 110 ° C. is possible, and cooking can be performed in about 1/3 of the heating time compared to cooking with a general pan. . Therefore, if a pressure cooker is used, it can prevent that nutrients, such as various vitamins and a mineral, are lost in the step of cooking, and can take in these nutrients efficiently. Moreover, even if hard materials such as striped meat, shank meat, fish bones, etc. that cannot be cooked in a general pot or need a lot of cooking time even if cooking is possible, the flavor can be improved by using a pressure cooker. It can be cooked softly and without any damage. Thus, since the pressure cooker has many advantages compared with a general pan etc., it is widely used today.

  However, when the pressure cooker is used, the inside of the pressure cooker is hot and the internal pressure is high, so if the lid of the pressure cooker is unexpectedly opened during use, hot water and heated cooking object May scatter to the outside and in some cases contact the user of the pressure cooker and cause burns. For this reason, the pressure cooker is usually provided with a lid locking mechanism so that the lid is not opened unexpectedly during operation of the pressure cooker.

  Conventionally, from the consideration of the safety of cooks who use pressure cookers, multiple locations are fixed with fasteners such as screws, bolts, and nuts to securely lock the container and lid of the pressure cooker By doing so, the container and the lid of the pressure cooker were locked. Locking with a fixing tool requires the operation and release of the lock one by one while using a screwdriver, hexagon wrench, etc., so it takes time and effort to operate and release the lid lock. There is a problem. Of course, pressure may remain in the pressure cooker even during cooking, even if it is after cooking. In such a case, when the user unlocks, Since the pressure is released from only one removed position, it is very dangerous, and there is a problem that the force of the vapor pressure leads to damage to the lid, the container, the fixture, and the like.

  In order to solve this problem, in Patent Document 1, a frame body including a base portion and a columnar portion, a gas stove installed on the base portion, a rotation lever provided above the columnar portion, and a rotation A pan lid that is attached to the lower end of the rod that moves up and down by a lever operation, is movable up and down on the gas stove, and is pressure-bonded to the pressure pan placed on the gas stove at the lowest position, and the pan lid is pressurized There has been proposed a pressure cooker having a lock mechanism provided with a lock pin that fixes the rotating lever in a state where it is crimped to the pan. In this pressure cooker, it is not necessary to fix the container and the lid body at a plurality of locations with a fixture, and the lid attached to the lower end of the rod is crimped to the container by rotating the rotating lever so that the pressure cooker is Since it can be sealed, it is easy to attach and detach the lid, and even if the user tries to release the lock, the entire lid moves up and down, so that the pressure is released from only one place. There is no way to go.

  However, the pressure cooker described in Patent Document 1 is a very large device because the pressure cooker body is provided with a frame, and the configuration is complicated, and space saving cannot be achieved.

JP 2003-230482 A

  The present invention has been made to solve the above-described problems, and can simultaneously operate or release a lock by a plurality of lock mechanisms, and only one part is released by releasing only a part of the lock. It is possible to prevent the danger that the pressure is released from, and breakage of the lid, container, fixture, etc., facilitate the operation and release of the lock, and simplify the configuration and save space. It aims at providing the pressure cooker which can be performed.

  The invention according to claim 1 includes a bottomed cylindrical container having an opening on the upper side, a lid that opens and closes the opening of the container, and a plurality of the lids that are attached along a peripheral surface of the opening. A pressure cooker including a lock mechanism for fixing a body to the container in a closed position, the lock mechanism including a lid-side clutch pawl attached at a plurality of locations along an outer peripheral surface of the lid, and the container opening A container-side clutch pawl attached to a position corresponding to the lid-side clutch pawl along the outer peripheral surface in the vicinity of the portion, and engaging the lid-side clutch pawl and sliding along the container outer peripheral surface It comprises a plurality of engaging members that engage with the lid side clutch claws and a drive mechanism that slides the engaging members, and the engaging members are connected to each other by a connecting member. On the force cooker.

  The invention according to claim 2 relates to the pressure cooker according to claim 1, wherein the drive mechanism is an air cylinder.

  The invention according to claim 3 includes a drive mechanism cover that covers an outer surface side of the drive mechanism, and a clutch cover that is rotatably attached to the outer surface of the drive mechanism cover via a hinge. The pressure cooker according to claim 1 or 2, wherein the pressure cooker is urged to rotate in one direction by the hinge and covers the engaging member at a rotation end position in the one direction. Related to the vessel.

  According to the first aspect of the present invention, since the plurality of engaging members are connected to each other by the connecting member, it is possible to simultaneously operate or release the locks by the lock mechanisms existing at a plurality of locations. Even if the engaging member itself or a part of the drive mechanism attached to the engaging member is broken, the engaging members are connected to each other by the connecting members, so that only a part of the engaging members are not engaged. Can be prevented. Therefore, a user's safety can be ensured and damage to the pressure cooker can be prevented. Since the pressure cooker does not particularly require a frame or the like, all the lock mechanisms can be operated or released only by connecting the engaging members, so that the pressure cooker can have a simple configuration. Can be saved.

  According to the invention of claim 2, since the drive mechanism is an air cylinder, the engagement member can be quickly slid with a simple configuration, and the engagement member and the lid side clutch pawl are engaged. Can be made.

  According to the invention which concerns on Claim 3, since it has the drive mechanism cover which covers the outer surface side of a drive mechanism, it can prevent that a dust etc. mix into a drive mechanism. A clutch cover is rotatably attached to the outer surface of the drive mechanism cover via a hinge. The clutch cover is urged to rotate in one direction by the hinge, and the one direction Since the engagement member is covered at the rotation end position, the clutch cover covers the engagement member when the opening is in an open state, and dust or the like can be prevented from entering the engagement portion. Since it is possible to prevent dust and the like from being mixed into the driving mechanism and the engaging portion, it is possible to prevent the driving mechanism and the engaging portion from being damaged, and the lock mechanism is operated and released smoothly. be able to.

Hereinafter, a preferred embodiment of a pressure cooker according to the present invention will be described with reference to the drawings.
FIG. 1 is a diagram of a lock mechanism of a pressure cooker according to the first embodiment of the present invention. FIG. 2 is a side view of the pressure cooker according to the first embodiment of the present invention. FIG. 3 is a plan view of the lid of the pressure cooker according to the first embodiment of the present invention. FIG. 4: is a figure of the cover side clutch nail | claw of the pressure cooker in 1st Embodiment based on this invention, (a) is a front view, (b) is a side view, (c) is a bottom view, (d ) Is a perspective view. Drawing 5 is a figure of a container side clutch claw of a pressure cooker in a 1st embodiment concerning the present invention, (a) is a side view and (b) is a perspective view. Drawing 6 is a figure of the engaging member of the pressure cooker in a 1st embodiment concerning the present invention, (a) is a front view, (b) is a side view, and (c) is a perspective view. FIG. 7 is a view of the engagement portion seen through the upper flange from the upper side with the lid side clutch pawl contacting the inner surface of the lower flange of the engagement member when the opening is closed with the lid. FIG. 8 is a plan view of the container of the pressure cooker according to the first embodiment of the present invention, wherein (a) is a diagram in which a lock mechanism and a connecting member are arranged, and (b) is a drive mechanism (air cylinder). FIG. FIGS. 9A and 9B are side views of the lock mechanism according to the first embodiment of the present invention, where FIG. 9A is a diagram in which the air cylinder is contracted, and FIG. 9B is a diagram in which the air cylinder is extended. .

  The pressure cooker 100 according to the present invention includes a container 1, a lid 2, a lock mechanism 3, and a connecting member 8.

  The container 1 has a bottomed cylindrical shape and has an opening on the upper side thereof, and an object to be cooked and water are poured into the inside from the opening. As the material of the container 1, it is necessary to use a material having high strength because the pressure in the container 1 becomes high. For example, a clad steel plate, stainless steel, iron, aluminum alloy, or the like can be used. The volume of the container 1 is appropriately selected depending on the application. For example, when the pressure cooker 100 is for business use, a 200 L container can be used. 8 (a) and 8 (b), the container 1 can swing around the line A-A '. The B side is lowered when the cooked material is loaded, and B' is lowered when the cooked material is taken out. Can do. Thereby, taking in and out of to-be-cooked goods is made easy. In FIGS. 8A and 8B, the lid 2 is attached to the position A so as to be rotatable.

  As shown in FIG. 2, the lid 2 is attached via a rotating shaft provided in the vicinity of the opening of the container 1, and the container 1 is rotated by driving the power cylinder with the rotating shaft as a fulcrum. Open and close the opening. When the lid 2 closes the opening of the container 1, the peripheral edge of the lid 2 is in close contact with the peripheral edge of the opening of the container 1. In a portion where the lid 2 and the container 1 are in close contact, a packing 21 is provided along the peripheral edge of the lid 2 as shown in FIG. The packing 21 can be made of a material that can completely seal the inside of the container 1, such as rubber or synthetic resin. However, since the temperature in the container 1 rises to 110 to 120 ° C., heat resistance is improved. I need. As the material of the lid 2, a material having a strong strength similar to the material of the container 1, for example, a clad steel plate, stainless steel, iron, aluminum alloy or the like can be used.

  The lock mechanism 3 is attached at a plurality of locations along the outer peripheral surface of the opening of the container 1 and fixes the lid 2 to the container 1 at the closed position. Since the lock mechanism 3 is provided at equal intervals along the circumferential direction, it does not prevent the container 1 from swinging, and does not prevent the food to be cooked or taken out. The lock mechanism 3 includes a lid side clutch pawl 4, a container side clutch pawl 5, an engagement member 6, and a drive mechanism 7.

As shown in FIG. 1, the lid-side clutch pawl 4 is formed in a substantially key shape when viewed from the side. A key-type base 41 that is one end is attached to the lid 2, and a tip that is the other end 42 is bent toward the container 1 and has a substantially U-shape. The lid side clutch claws 4 are attached at a plurality of positions along the outer peripheral surface of the lid body 2 at equal intervals. In FIG. However, the attachment location of the lid side clutch pawl 4 is not particularly limited as long as it is two or more locations. However, it is necessary to attach the container 2 at a position that does not prevent the container 2 from swinging.
In order to engage the engaging member 6 described later, the tip end portion 42 which is the other end portion of the lid side clutch pawl 4 is in the longitudinal direction (the direction along the outer peripheral surface of the lid body 2) as shown in FIG. A plurality of parts are cut out at intervals to form a comb-teeth shape. When the opening of the container 1 is closed by the lid 2, the lid 2 is lowered until the lower surface 43 of the distal end portion 42 of the lid-side clutch claw 4 contacts the lower flange inner surface 61 of the engaging member 6.

  The container side clutch pawl 5 is attached along the outer peripheral surface of the container 1 so as to correspond to the lid body side clutch pawl 4 and is integrated with an engagement member 6 described later to form an engagement portion. As shown in FIGS. 5A and 5B, the container-side clutch pawl 5 is provided with an engaging protrusion 51 protruding outward (in a direction along the outer peripheral surface of the container 1). As shown in FIG. 5, the engagement member 6 is always engaged.

  The engaging member 6 is a substantially U-shaped member having flanges on the upper and lower sides, and the front end portion 42 of the lid-side clutch pawl 4 and the engaging protrusion 51 of the container-side clutch pawl 5 are between the upper and lower flanges. The lid 2 and the container 1 are locked by being engaged with each other. As shown in FIG. 6, a plurality of portions are cut out at intervals in the longitudinal direction (the direction along the outer peripheral surface of the container 1) of the upper flange 62 of the engaging member 6, thereby forming a comb shape. The portion of the upper flange 62 of the engaging member 6 corresponding to the non-notched portion (the portion h in FIGS. 4C and 4D) of the lid side clutch pawl 4 is notched (FIGS. 6A and 6C). )), Conversely, the portion of the upper flange 62 of the engagement member 6 corresponding to the notch of the lid side clutch pawl 4 (the j of FIGS. 4C and 4D) is notched. Due to the absence (part k in FIGS. 6A and 6C), the comb teeth of the tip end portion 42 of the lid side clutch pawl 4 and the comb teeth of the upper flange 62 of the engaging member 6 are displaced from each other. As a result, the tip end portion 42 of the lid-side clutch pawl 4 does not come into contact with the upper surface 62 of the upper flange 62 of the engaging member 6 and can be lowered until it comes into contact with the inner surface 61 of the lower flange of the engaging member 6. . FIG. 7 shows a view of this state seen from above through the upper flange. Thereafter, the engaging member 6 slides in the direction along the outer peripheral surface of the container 1, whereby the lid-side clutch pawl 4 and the engaging member 6 can be engaged between the upper and lower flanges. In order to facilitate the opening and closing of the lid 2, the non-notched portion (portion h in FIGS. 4 (c) and 4 (d)) of the lid side clutch pawl 4 is the notched portion (FIG. 6 (a)) of the engaging member 6. It is narrower than the portion i in (c).

  As shown in FIG. 8A, in the present invention, the engaging members 6 adjacent in the circumferential direction are connected to each other by a connecting member 8. Since the engaging member 6 is connected by the connecting member 8, the locks by the lock mechanisms 3 existing at a plurality of locations can be simultaneously activated or released. Even if the engaging member 6 itself or a part of the drive mechanism 7 attached to the engaging member 6 is broken, only a part of the engaging member 6 is connected to each other by the connecting member 8. Can be prevented from becoming disengaged. Thereby, a user's safety can be ensured and damage to pressure cooker 100 can be prevented. Since the pressure cooker 100 does not require a frame or the like and only connects the engaging member 6, the pressure cooker 100 can have a simple configuration, and space saving of the pressure cooker 100 can be achieved. .

The connecting member 8 includes a connecting rod 81 and a connecting connector 82.
Since it is necessary to bridge the connecting members 81 so as to surround the containers 1 having a circular shape in plan view, the connecting rods 81 are slightly bent inward at both ends. The connection connector 82 is attached to both the bent ends.
The connection connector 82 is rotatable in a horizontal plane at a connection portion 83 with the engagement member 6. By making it freely rotatable in a horizontal plane, when the entire engaging member 6 slides, all the engaging members 6 can be smoothly slid in the circumferential direction.

  9 (a) and 9 (b), the drive mechanism 7 uses an air cylinder. One end of the air cylinder is fixed to the side surface of the container 1, and the other end that slides is fixed to the engaging member 6. Has been. As the air cylinder expands and contracts, the engaging member 6 slides in a direction along the outer peripheral surface of the container 1. The sliding distance is such that the lid side clutch pawl 4 and the engaging member 6 are engaged. The degree of engagement refers to the non-notched portion of the lid-side clutch claw 4 (portion h in FIGS. 4C and 4D) and the non-notched portion of the upper flange 62 of the engaging member 6 (FIG. 6A). c) and the upper teeth 62 of the engaging member 6 are overlapped with each other.

  The drive means of the drive mechanism 7 is not particularly limited, and a manual method, a gear motor, an air cylinder, a hydraulic cylinder, or the like can be used, but as shown in FIGS. 9A and 9B, an air cylinder should be used. Is preferred. This is because the engaging member 6 can be quickly engaged and disengaged with a simple configuration. As shown in FIG. 8 (b), the drive mechanism 7 may be provided at each engagement location. Since the engagement members 6 are connected to each other, the drive mechanism 7 is provided at one location and the other engagement locations are provided. The joint points may be linked.

  In the present invention, as shown in FIG. 8B, the air cylinder 71 is between the A-B and A′-B ′, and the air cylinder 72 is between the B′-A and B-A ′. Alternatingly arranged along the outer circumferential direction. As shown in FIG. 9A, the air cylinder 71 contracts the cylinder when the lock mechanism 3 is released, and slides the engagement member 6 by extending the cylinder when the lock mechanism 3 is operated. . On the other hand, as shown in FIG. 9B, the air cylinder 72 is such that the cylinder is extended when the lock mechanism 3 is released, and the engagement member 6 is slid by contracting the cylinder when the lock mechanism 3 is operated. It is. Thus, by alternately arranging the air cylinders 71 and the air cylinders 72, it is possible to mitigate the impact during the operation of the lock mechanism.

  Hereinafter, the operation of the pressure cooker according to the present invention will be described. FIG. 10 is a diagram of an engagement location immediately before closing the lid of the pressure cooker according to the first embodiment of the present invention. FIG. 11: is the figure which obstruct | occluded the cover body of the pressure cooker in 1st Embodiment which concerns on this invention. FIG. 12 is a view showing the lid of the pressure cooker according to the first embodiment of the present invention locked.

  The lid 2 is rotated upward to open the container 1 and the cooking object such as rice, beans, vegetables, meat, fish, etc. is placed in the container 1 as shown in FIGS. A predetermined amount is charged from the direction B shown, and then a predetermined amount of water is charged. When seasoning the food to be cooked, a predetermined amount of salt, soy sauce, sugar, mirin, sake, chemical seasoning or the like is appropriately added.

  Then, the opening part of the container 1 is obstruct | occluded by rotating the cover body 2 below. At that time, as shown in FIG. 10, the lid-side clutch pawl 4 is lowered from the upper side to the engaging member 6 side. As described above, the portion of the upper flange 62 of the engaging member 6 corresponding to the non-notched portion (portion h in FIGS. 4C and 4D) of the lid-side clutch pawl 4 is notched (FIG. 6 ( a) (c) i portion), conversely, the portion of the upper flange 62 of the engaging member 6 corresponding to the notch portion (portion j in FIGS. 4C and 4D) of the lid side clutch pawl 4 is Since the notch is not cut (portion k in FIGS. 6 (a) and 6 (c)), the lower surface 43 of the lid side clutch pawl 4 and the upper surface 63 of the engaging member are not in contact with each other, as shown in FIG. The lower surface 43 of the claw 4 can be lowered until it comes into contact with the lower flange inner surface 61 of the engaging member 6.

  Thereafter, the air cylinder 71 shown in FIG. 9 (a) is extended and the air cylinder 72 shown in FIG. 9 (b) is contracted to slide the engagement member 6 in the right direction in FIGS. 9 (a) and 9 (b). Then, the lid 2 is locked. As described with reference to FIG. 8A, the engaging members 6 are all connected via the connecting member 8, and the air cylinder 71 between A-B and A′-B ′ is provided. By extending and contracting the air cylinder 72 between B′-A and B-A ′, all the engaging members 6 are simultaneously slid in the counterclockwise direction. The engaging portion after sliding of the engaging member 6 is in the state of FIG. 12 when the engaging member 6 slides to the right side of the drawing from the state of FIG. 11, and the front end portion 42 of the lid side clutch pawl 4 is engaged with the engaging member 6. The upper flange 62 is engaged. Thereby, the lid 2 is locked. Since all the engaging members 6 slide simultaneously, the lid 2 is simultaneously locked to the container 1 by all the locking mechanisms 3. Thereafter, the lock pin 31 is inserted to prevent the lock from being released.

  After the lid 2 is locked, the pressure cooker 100 is heated and cooking of the cooking object put in the container 1 is started. The cooking time is appropriately selected depending on the food to be cooked inside the container 1. After cooking, the lid 2 is not unlocked until the pressure inside the pressure cooker 100 becomes equal to the external pressure. When the pressure becomes equal to the external pressure, the lock is released. First, the lock pin 31 is removed, the air cylinder 71 shown in FIG. 9 (a) is contracted, and the air cylinder 72 shown in FIG. 9 (b) is extended, so that the engaging member 6 is shown in FIG. 9 (a) (b). The cover 2 is unlocked by sliding it to the left. As described with reference to FIG. 8A, the engaging members 6 are all connected via the connecting member 8, and the air cylinder 71 between A-B and A′-B ′ is provided. By contracting, the air cylinder 72 between B′-A and B-A ′ is extended, so that all the engaging members 6 are simultaneously slid clockwise and the lock is released. Thereafter, the opening of the container 1 is opened by rotating the lid 2, and the cooked object to be cooked is taken out from the container 1 in the B ′ direction shown in FIGS.

FIGS. 13A and 13B are diagrams of a lock mechanism showing a second embodiment of the pressure cooker according to the present invention, in which FIG. 13A shows a state before the lid is closed, and FIG. 13B shows a state after the lid is closed. It is the figure which showed the state of. FIG. 14 is a configuration diagram of a clutch cover used in the second embodiment, in which (a) is a left side view, (b) is a front view, and (c) is a right side view.
The pressure cooker 100 according to the second embodiment of the present invention includes a drive mechanism cover that covers the outer surface side of the drive mechanism, and a clutch cover that is rotatably attached to the outer surface of the drive mechanism cover via a hinge. The clutch cover is urged to rotate in one direction by a hinge and covers the engaging member at a rotation end position in one direction. Hereinafter, the second embodiment will be described, but the same configuration as that of the first embodiment is the same as described above, and thus the description thereof is omitted.

The drive mechanism cover 9 protects the drive mechanism 7 so that food to be cooked or the like spilled from the container 1 does not enter the drive mechanism 7 as garbage. By providing the drive mechanism cover 9, it is possible to prevent the drive mechanism 7 from being damaged.
The material of the drive mechanism cover 9 is not particularly limited, but, for example, stainless steel or aluminum curved plate can be used.

  One part of the hinge 10 sandwiching the rotation shaft is fixed to the drive mechanism cover 9, and the other part is fixed to the clutch cover 11. Thereby, the clutch cover 11 becomes rotatable.

  The clutch cover 11 protects the engaging member 6 in order to prevent food to be cooked or the like spilled from the container 1 from entering the engaging member 6 as dust. By providing the clutch cover 11, it is possible to prevent the engaging member 6 from being damaged. The clutch cover 11 is urged by the hinge 10 so as to rotate in one direction (clockwise in FIG. 13).

  The clutch cover 11 is attached to the clutch cover main body 111 made of a curved metal plate such as stainless steel or aluminum, and the upper end side of the clutch cover main body 111, as shown in FIGS. 14 (a), 14 (b), and 14 (c). The triangular plate 112 has a triangular plate shape. The triangular plate 112 includes an inclined side that falls from the outside toward the inside in a state where the engagement member 6 is covered.

Hereinafter, the operation of the clutch cover 11 when the lid 2 is attached to and detached from the container 1 will be described.
In a state where the opening of the container 1 is opened by rotating the lid 2 upward, the engaging member 6 is covered with the clutch cover 11 as shown in FIG. When the opening of the container 1 is closed by rotating the lid 2 downward, the lid-side clutch pawl 4 comes into contact with the inclined side 113 of the triangular plate 112 of the clutch cover 11. Thereafter, the lid-side clutch pawl 4 further pushes the clutch cover 11 in the direction opposite to the biasing direction of the hinge 10, while the lower surface 43 of the front end portion 42 of the lid-side clutch pawl 4 and the lower flange inner surface 61 of the engagement member 6. It slides down with the side 113 of the triangular plate 112 until it comes into contact, and the state shown in FIG. In this state after locking, cooking is started in the pressure cooker.
After the cooking is finished, the lid side clutch pawl 4 is lifted after the lock is released, so that the lid side clutch pawl 4 is gradually separated from the triangular plate 112 and the pressing force of the lid side clutch pawl 4 is reduced. Returns to its original state so as to rise up in accordance with the urging direction, and enters the state shown in FIG. 13A, and the engaging member 6 is covered with the clutch cover 11 again.

In the second embodiment, as shown in FIG. 13, the lid side clutch pawl 4 is in contact with the inclined side 113 of the triangular plate 112 of the clutch cover 11 (the upper end of the inclined side 113 when the lid 2 is closed). It is preferable that a cylindrical sliding contact member 44 is provided at a position where it contacts. By providing the sliding contact member 44, when the opening of the container 1 is closed by the lid 2, the lid-side clutch pawl 4 can push the clutch cover 11 more smoothly.
For example, in FIG. 13, the sliding contact member 44 is a cylindrical member having a diameter of 6 mm and a length of 10 mm.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a pressure cooker that cooks hard materials such as striped meat, shin meat, and fish bones that cannot be cooked in a general pan or that require a lot of cooking time even if cooking is possible. It is what is used.

It is a figure of the locking mechanism of the pressure cooker in 1st Embodiment which concerns on this invention. It is a side view of the pressure cooker in 1st Embodiment which concerns on this invention. It is a top view of a lid of a pressure cooker in a 1st embodiment concerning the present invention. It is a figure of the lid side clutch nail | claw of the pressure cooker in 1st Embodiment based on this invention, (a) is a front view, (b) is a side view, (c) is a bottom view, (d) is a perspective view. It is. It is a figure of the container side clutch nail | claw of the pressure cooker in 1st Embodiment which concerns on this invention, (a) is a side view, (b) is a perspective view. It is a figure of the engaging member of the pressure cooker in 1st Embodiment which concerns on this invention, (a) is a front view, (b) is a side view, (c) is a perspective view. It is the figure which looked at the engagement location from the upper side through the upper flange in the state where the lid side clutch pawl is in contact with the inner surface of the lower flange of the engagement member when the opening is closed with the lid. It is a top view of the container of the pressure cooker in 1st Embodiment which concerns on this invention, Comprising: (a) is the figure which has arrange | positioned the locking mechanism and the connection member, (b) is the figure which has arrange | positioned the drive mechanism (air cylinder). It is. It is a side view of the lock mechanism in a 1st embodiment concerning the present invention, (a) is a figure which the air cylinder contracts, and (b) is a figure where the air cylinder is extended. It is a figure of the engagement location just before obstruct | occluding the cover body of the pressure cooker in 1st Embodiment which concerns on this invention. It is the figure which obstruct | occluded the cover body of the pressure cooker in 1st Embodiment which concerns on this invention. It is the figure which locked the cover body of the pressure cooker in 1st Embodiment which concerns on this invention. It is a figure around the engaging location of the pressure cooker in 2nd Embodiment which concerns on this invention, Comprising: (a) is the state before closing a cover body, (b) is the state after closing a cover body. FIG. It is a block diagram of the clutch cover used for the pressure cooker in 2nd Embodiment based on this invention, (a) is a left view, (b) is a front view, (c) is a right view.

Explanation of symbols

1. Container 2. Lid 3. Lock mechanism 4. 4. Clutch claw on lid side 5. Container side clutch pawl 6. engagement member Drive mechanism 8. Connecting member 9. Drive mechanism cover 10. Hinge 11. Clutch cover 100. Pressure cooker

Claims (3)

A cylindrical container with a bottom having an opening on the upper side, a lid that opens and closes the opening of the container, and a plurality of attachments that are attached along the outer peripheral surface of the opening to the container in the closed position. A pressure cooker comprising a locking mechanism for fixing,
The lock mechanism is attached at positions corresponding to the cover-side clutch pawls along the outer peripheral surface in the vicinity of the container opening, and the lid-side clutch pawls attached at a plurality of locations along the outer peripheral surface of the lid. A container-side clutch pawl, a plurality of engaging members that engage with the lid-side clutch pawl and slide along the outer peripheral surface of the container, and slide the engaging member. Consisting of a drive mechanism,
The pressure cooker, wherein the engaging members are connected to each other by a connecting member.   The pressure cooker according to claim 1, wherein the driving mechanism is an air cylinder. A drive mechanism cover that covers the outer surface side of the drive mechanism; and a clutch cover that is rotatably attached to the outer surface of the drive mechanism cover via a hinge;
The clutch cover is urged to rotate in one direction by the hinge and covers the engagement member at a rotation end position in the one direction. Pressure cooker.

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