JP3217339U - Pressure cooker lid open / close lock device - Google Patents

Abstract

An object of the present invention is to provide a pressure cooker lid opening / closing lock device having a simple structure and no erroneous operation. A lid opening / closing lock device for a pressure cooker 1 is provided on a lid 3 that covers an opening of a pan body 2 and is fitted to an inner peripheral edge of the lid 3 so that the pan body 2 and the lid 3 are hermetically sealed. A lid packing 4 to be fitted to the lid, a lid packing pressing protrusion 30b provided at the front of the first slider 30 in the center of the lid, and a lid packing formed on the outer peripheral surface of the lid. In order to press the protrusion, the protrusion protrudes from the outer peripheral surface of the lid into the inside of the lid, and the airtight state is maintained by interposing a float valve packing 61a between the lid without the exhaust function. And a float valve 61 slidably fitted. [Selection] FIG.

Description

  The present invention relates to a lid opening / closing locking device for a pressure cooker for rotating a lid covering an opening of a pan body of a pressure cooker in a circumferential direction to airtightly lock the lid to the pan body.

  Conventionally, as this kind of pressure cooker lid opening / closing locking device, for example, a device described in Patent Document 1 below is known.

  The pressure cooker lid opening / closing lock device described in Patent Document 1 detects the pressure in the pressure cooker with a float valve mechanism having a steam discharge hole when the lid handle is superposed with the container handle facing the container. In addition, a lock mechanism including the lid-side lock mechanism and the container-side lock mechanism that can be locked to or unlocked from the pan body only by rotating the lid without providing an operation lever or the like is provided. The lid-side locking mechanism includes a synergistic action of the three sliders of the first and second sliders and the lock slider, and three springs that expand and contract each slider, the container-side locking mechanism of the container-side handle, and the float valve. In combination with the mechanism, the tip of the first slider is automatically raised and lowered on the upper surface of the float valve only by rotating the lid handle, thereby restricting the rise of the float valve. With this structure, when the pressure in the pressure cooker is present, opening and closing of the lid is prevented, and when there is no pressure in the pressure cooker, opening and closing of the lid is not inhibited.

Utility Model Registration No. 3175743

  However, in Patent Document 1 configured as described above, as shown in FIG. 13, since the vapor discharge hole 124 is provided in the float valve 161, the exhaust pressure when the lid is incompletely fitted to the container is reduced. Therefore, the ease of escape of the steam from the float valve 161 and the ease of raising the float valve 161 were in balance. As a result, the exhaust pressure at the time of incomplete fitting is insufficient, and a large amount of steam is required to raise the float valve 161 at the time of complete fitting, so that the operation of the float valve 161 takes time. there were. There was also a steam leak from the float valve 161.

  The present invention has been devised in order to solve the above-described problems of the conventional example, and in order to solve the above problems, a mechanism that makes the exhaust pressure depend not on the float valve but on the lid packing is adopted. Accordingly, an object of the present invention is to provide a pressure cooker lid opening / closing lock device that quickly raises the float valve without requiring a large amount of steam when the float valve is raised.

  The lid opening / closing lock device for a pressure cooker according to claim 1 of the present invention is provided on a lid that covers the opening of the pan body, and is fitted to the inner peripheral edge of the lid, and the pan body and the lid are fitted in an airtight manner. A lid side handle having a lid packing to be formed, a concave groove formed on the bottom surface, and a cutout groove communicating with the concave groove, and provided in the concave groove of the lid side handle in a direction toward the center of the lid A first slider provided with a first spring to be biased, a protrusion for pressing the packing for the lid provided at the front of the first slider in the center direction, and an outer peripheral surface of the lid. When the lid and the pan body are in an airtight state due to the lid packing and the projection projecting hole for projecting the projection from the outer peripheral surface of the lid to the inside of the lid to press the lid packing, it moves up and down by the pressure in the pan. However, it does not have an exhaust function, and a float valve packing placed in the hole in the lid is interposed. A float valve that is slidably fitted while maintaining an airtight state, and a second spring that is fitted to the first slider and has a leg portion at the bottom, and is biased toward the center of the lid. 2 sliders and a third spring that is fitted to the first slider and urges in a direction perpendicular to the center direction of the pan body, and a convex wall projecting from the upper surface of the container-side handle at one end. A lid-side lock mechanism comprising a lock slider having a locking portion to be in contact with, a guide groove formed on the upper surface of the pan body and attached to the outer peripheral wall of the pan body, and protruding adjacent to the guide groove A container side handle having a convex wall, a guide groove and a convex wall of the container side handle are configured as a container side lock mechanism, and the inside of the pressure cooker is overlapped with the lid side handle facing the container side handle. Is detected by the float valve mechanism, When the side handle is not overlapped with the container side handle, the lid packing pressing protrusion provided on the first slider presses the lid packing to reduce the airtight state in the pressure cooker, and the lid only rotates. It is characterized by comprising a lock mechanism comprising the lid side lock mechanism and the container side lock mechanism that can be locked or unlocked to the pan body by operation.

  Since a protrusion is provided near the front center part of the first slider and the protrusion can be protruded from a protrusion protrusion hole formed in the side surface of the lid, the first slider is attached to the second spring when the lid is in an incompletely fitted state. When pressed, the protrusion always protrudes and presses the lid packing. This prevents an increase in pressure in the pan. At the time of complete fitting, the protrusion is accommodated in the handle. At this time, the lid seal is brought into contact with the inner wall, so that the inside of the pan is sealed, so that the pressure can be increased, and since the float valve does not have an exhaust function, if the pressure rises, the float valve immediately To rise. Therefore, when the lid is incompletely fitted, steam is leaked from the lid packing and the pressure in the pan is not increased, so safety is improved.

  In addition, this mechanism eliminates the need for an exhaust hole for the float valve. This makes it possible to quickly raise the float valve without requiring a large amount of steam when the float valve is raised, and to reliably confirm that the pressure is increased because the lid is in a fully fitted state.

1 is a perspective view of an entire pressure cooker employing a pressure cooker lid opening / closing lock device according to the present invention. In FIG. 1, it is the principal part perspective view which showed the internal structure of the periphery of the lid side locking mechanism provided in the bottom face side of the lid side handle, and the container side handle. FIG. 3 is a perspective view of a lid side lock mechanism in FIG. 2. It is the perspective view which cut and showed the center part of the lid side locking mechanism of FIG. FIG. 4 is a perspective view showing a part of a rear portion of the lid side lock mechanism of FIG. It is a disassembled perspective view of a 2nd slider, a lock slider, and a 1st, 2nd, 3rd spring. In FIG. 1, it is a bottom view of the principal part of the lid | cover which provided the lid side handle. It is the perspective view which looked at the container side handle in Drawing 1 and Drawing 2 from the upper surface. It is an operation principle diagram showing the relationship between the lid-side lock mechanism and the float valve mechanism, wherein (A) shows the unlocked state of the lid when the first slider contacts the float valve, and (B) shows the above (A ) The second slider is slightly retracted from the position, and the locking portion of the lock slider and the convex wall of the container side handle are in contact with each other. (C) is a complete overlap of the lid side handle and the container side handle. Then, the locking portion of the lock slider is immersed in the first slider, and the convex wall of the container side handle is engaged with the notch groove of the lid side handle, and the lid is locked. It is the principal part perspective view which showed the state which the front-end | tip part of the 1st slider released | released contact | abutting with the float valve mechanism, and the float valve was rising. It is a schematic sectional drawing which shows the positional relationship of the protrusion in the 1st slider in a locked state, the packing for lid | covers, and a float valve. It is a schematic sectional drawing which shows the positional relationship of the processus | protrusion in the 1st slider in a lock release state, the lid packing, and the float valve. It is the prior art example of a float valve mechanism, Comprising: (A) shows the state in which there is no pressure in a pressure cooker, and the float valve has fallen, (B) has pressure in a pressure cooker, and the float valve has gone up. Indicates the state.

  An example of an embodiment of the present invention will be described below with reference to FIGS.

  In FIG. 1, 1 is a pressure cooker. This pressure cooker 1 closes the pan body 2 having a container-side handle 10 attached to the outer peripheral side wall, the opening of the pan body 2, and the lid-side handle. And a lid 3 to which 20 is attached. And the container side handle | steering-wheel 10 and the lid side handle | steering-wheel 20 have a corresponding shape, and when the lid | cover 3 is locked to the pan main body 2, as shown in FIG.

  The container-side handle 10 is provided with a container-side locking mechanism 11, and the lid-side handle 20 is provided with a lid-side locking mechanism 21 and a float valve mechanism 60, and these three container-side locking mechanisms 11, lid-side locking mechanisms 21, and float valves are provided. The mechanism 60 constitutes a lock mechanism that also serves as a lid opening / closing mechanism. When the lid 3 is closed to the pan body 2, as shown in FIG. 1, the opening of the pan body 2 is covered with the lid 3, and the lid side handle 20 is overlapped with the container side handle 10. When the lid-side handle 20 is rotated in the closing direction along the circumferential direction of the pan body 2 as described above, both the handles 10 and 20 are overlapped as shown in FIG. As shown, since the first slider 30 can be held in the lowered state, the float valve 61 is opened up and down, and the float valve 61 is not provided with an exhaust mechanism and is formed in the lid 3 to be described later. The pot body 2 and the lid 3 are held in an airtight state by a float valve packing 61a disposed in the above-described float valve up / down hole.

  Further, when the lid 3 is changed from the locked state to the unlocked state, the float valve 61 described later does not detect the pressure in the pressure cooker 1 and the float valve 61 is lowered, and the lid-side handle 20 is moved around the pan body 2. When it rotates in the opening direction along the direction, the locked state is released by the locking mechanism, and the lid 3 can be removed (opened) from the pan body 2.

  A plurality of outward locking projections are formed on the upper opening edge of the pan body 2 with appropriate intervals, and an inward locking claw is provided on the lower opening edge of the lid 3 with appropriate intervals. A plurality are formed. By rotating the lid side handle 20, the lid 3 is prevented from being detached by engaging the locking projection piece and the locking claw, and the engagement between the locking projection piece and the locking claw is released. Thus, the lid 3 is removed. Moreover, as shown in FIG. 11, when the lid packing 4 is fitted to the inner peripheral edge of the lid 3 and the pan body 2 and the lid 3 are locked, the pressure of the pressure cooker 1 does not escape to the outside. The internal pressure can be increased.

  When the container side locking mechanism 11 and the lid side locking mechanism 21 are engaged with each other, the lid 3 is locked with respect to the pan body 2, and the engagement between the both 11 and 21 is released, so that the lid 3 is The pan body 2 is unlocked.

  Therefore, the container side lock mechanism 11 and the lid side lock mechanism 21 will be described below.

  As shown in FIG. 8, the container-side lock mechanism 11 includes a guide groove 12 formed in the front portion of the container-side handle 10 and a convex wall 13 projecting adjacent to the guide groove 12. It has become. The guide groove 12 is such that a leg portion 42 of a second slider 40 (described later) provided in the lid-side handle 20 moves left and right in FIG. 8, and the container-side handle 10 and the lid-side handle 20 are opposed to each other. When overlapped and locked, the leg portion 42 of the second slider 40 is engaged with the engaging portion 12 a of the guide groove 12. As shown in FIG. 8, the guide concave groove 12 has the inlet 12c formed at the foremost position of the container-side handle 10, and the tapered side wall 12b is formed at the rear of the inlet 12c.

  As shown in FIG. 7, the lid-side handle 20 has a front portion applied to the outer peripheral side wall 3 a of the lid 3 and is fixed with screws or the like. A concave groove 22 is formed in the longitudinal direction on the bottom surface of the lid-side handle 20, and a notch groove 23 that intersects and communicates with the concave groove 22 is formed. In this embodiment, a lid-side lock mechanism 21 shown in FIG. 3 is fitted in the concave groove 22.

  As shown in FIGS. 3 to 6, the lid-side locking mechanism 21 includes a first slider 30 provided with a first spring 31 such as a telescopic spring, and a leg portion 42 that is fitted to the first slider 30 and is provided at a lower portion. And a second spring 40 provided with a second spring 41 such as a telescopic spring, and a third spring such as a telescopic spring fitted in the first slider 30 and perpendicular to the central direction of the pan body 2 51, and a lock slider 50 having an engaging portion 52 that comes into contact with the convex wall 13 projecting from the upper surface of the container-side handle 10 at one end.

  In this embodiment, the first slider 30 is composed of a base portion 32 having a deformed substantially box shape, and a slider main body portion 33 extending forward on the upper surface of the base portion 32. An empty chamber 34 is formed from the top to the bottom of the base 32, and a second slider 40 as shown in FIG. 6 moves back and forth relative to the first slider 30 in the empty chamber 34. It is fitted so that it can.

  The first spring 31 of the first slider 30 includes a spring receiving portion 43 formed at the rear upper end portion of the column portion 44 of the second slider 40 and an empty chamber 34 formed in the base portion 32 of the first slider 30. It is provided between the rear wall 35 and the front end of the first slider 30 is always pushed in the forward direction except during the polymerization so that the float valve 61 does not move up and down unnecessarily.

  Moreover, in the 1st slider 30, as shown in FIGS. 3-5, the protrusion 30b provided in the center direction front part of the lid | cover 3 in the 1st slider 30 is provided, and the said protrusion 30b is mentioned later. The lid packing 4 fitted to the inner peripheral edge of the lid 3 is pressed.

  In this embodiment, as shown in FIG. 6, the second slider 40 includes a column portion 44 and a pair of left and right arm portions 45 extending rearward from the left and right sides of the column portion 44. , 45, the leg portion 42 suspended below the column portion 44, the spring receiving portion 43, and a spring receiving portion 46 formed slightly below the spring receiving portion 43. The front end of the second spring 41 is hung on the spring receiving portion 46, and the rear end of the second spring 41 passes through a through hole 36 formed in a part of the rear wall 35 of the first slider 30, and then the lid side handle 20. It is adapted to be hung on the rear side wall of the concave groove 22 formed on the bottom surface.

  The lock slider 50 has a substantially box shape with a locking portion 52 projecting from one end side. The other end of the box shape portion 53 is opened, and an extension spring or the like is placed in the empty space of the box shape portion 53. The third spring 51 is fitted, and the locking portion 52 is biased in a direction in which the locking portion 52 contacts the convex wall 13 of the container-side handle 10.

  When the container-side handle 10 and the lid-side handle 20 are completely overlapped, the locking portion 52 of the lock slider 50 comes into contact with the convex wall 13 protruding from the upper surface of the container-side handle 10. The engagement state between the notch groove 23 of the lid side handle 20 and the engaging portion 52 of the lock slider 50 is released, and the first slider 30 is moved rearward. Further, when the lid is changed from the locked state to the unlocked state, the notch groove 23 of the lid side handle 20 and the engaging portion 52 of the lock slider 50 are returned to the engaged state, thereby the first slider 30 and the second slider. 40 is held in the forward direction.

  As shown in FIG. 5, the lock slider 50 is formed with a locking claw 54 at the bottom, and the locking claw 54 is locked with a claw 37 formed at the bottom of the first slider 30. Thus, the lock slider 50 is prevented from jumping out.

  In this embodiment, the lid side locking mechanism 21 including the first slider 30, the second slider 40, the lock slider 50 and the first, second, and third springs 31, 41, 51 is the lid side handle 20. The leg portion 42 of the second slider 40 protrudes downward from the inside of the concave groove 22 of the lid side handle 20, and the lid side handle 20 is inserted into the container side handle. 10 when the container side handle 10 is slidable in the guide groove 12 of the container side handle 10 and the lid side handle 20 is completely overlapped with the container side handle 10 and is in the locked position. The leg portion 42 of the second slider 40 is engaged with the engaging portion 12 a of the guide groove 12 of the container side handle 10.

  However, the specific configuration and assembling method of the lid-side lock mechanism 21 according to the present invention are not limited to the above-described configuration and assembling method, and can be appropriately changed in design.

    In order to provide a lid opening / closing lock mechanism with high safety, the present invention is arranged on the axis connecting the center portion of the lid 3 and the first slider 30 at a position in front of the front end portion of the first slider 30. 11 and FIG. 12, the lid 3 is not provided with an exhaust mechanism as the float valve mechanism 60 for detecting the internal pressure of the pan body 2, and the float valve packing 61a disposed in the hole of the lid 3 is interposed. A float valve 61 is provided that is slidably fitted while maintaining an airtight state. The float valve mechanism 60 is not provided with an exhaust mechanism when the float valve 61 detects the pressure in the pressure cooker 1 when the lid 3 is locked, and the float valve mechanism 60 is disposed in the hole of the lid 3. Since the airtight state is maintained by interposing the packing 61a for the steam, the steam in the pressure cooker 1 does not leak to the outside and the pressure does not decrease, so the float valve 61 is immediately raised and the lid 3 is in the locked state. Yes, it can be confirmed that the pressure cooker is in a sealed state and the pressure is increased. When the pressure in the pressure cooker 1 is not detected, the float valve 61 is slidably fitted between the lid 3 and the float valve 61 can be lowered, and the first slider 30 moves forward. The lid 3 can be opened by moving in the direction.

  When there is no pressure in the pressure cooker 1, the float valve 61 can be lowered, and the tip 30 a of the first slider 30 enters (protrudes) from the guide hole on the bottom side of the lid side handle 20 to float. The valve 61 is prevented from moving up and down unnecessarily, and the lid 3 can be opened.

  When there is pressure in the pressure cooker 1, the tip 30 a of the first slider 30 moves backward, and the float valve 61 is not equipped with an exhaust mechanism for releasing steam, so that the float valve 61 is driven by the internal pressure in the pressure cooker 1. It immediately rises and the lid 3 cannot be opened.

  Accordingly, the relationship among the float valve 61, the first and second sliders 30 and 40, the lock slider 50, the convex wall 13 of the container-side handle 10, and the lid-side handle 20 is shown in FIGS. ) Will be described below.

  FIG. 9A shows a normal state of the lid-side lock mechanism 21, and shows a state where the lid 3 is set on the pan body 2 and is slightly rotated in the closing direction in this normal state. In this case, since the leg portion 42 of the second slider 40 is in the vicinity of the inlet 12c of the guide groove 12 of the container-side handle 10, the lid-side lock mechanism 21 maintains the normal posture. That is, the first slider 30 is moved forward by the biasing force of the first spring 31 and the second spring 41, and the leg portion 42 of the second slider 40 is moved forward by the biasing force of the first spring 31. The locking portion 52 of the lock slider 50 is engaged with the notch groove 23 of the lid-side handle 20, and the tip portion 30a of the first slider 30 faces or comes into contact with the upper surface of the float valve 61. The lid 3 can be opened and closed.

  9B, the lid 3 is further rotated in the closing direction than in the case of FIG. 9A, and the locking portion 52 of the lock slider 50 is in contact with the convex wall 13 of the container-side handle 10. The state just before locking is shown. In this case, when the leg portion 42 of the second slider 40 is moved along the tapered side wall 12b of the guide groove 12 of the container-side handle 10, the first slider 30 is stationary and only the second slider 40 is The first spring 31 is moved rearward while compressing, and the engaging portion 52 of the lock slider 50 is in contact with the convex wall 13 of the container side handle 10 as described above.

    FIG. 9C shows a locked state in which the lid 3 is further rotated in the closing direction than in the case of FIG. 9B and the lid 3 is completely overlapped and locked. In this case, the lid-side handle 20 is closed from the state shown in FIG. 9B to the position where the leg portion 42 of the second slider 40 engages with the engaging portion 12a of the guide groove 12 of the container-side handle 10. It is rotated in the direction. At this time, the locking portion 52 of the lock slider 50 is released from the state of contact with the convex wall 13 of the container-side handle 10 (see FIG. 9B), and the notch of the lid-side handle 20 is removed. The engagement with the groove 23 is released, and the first slider 30 is immersed as shown in FIG. At the same time, the convex wall 13 of the container-side handle 10 is engaged with the notch groove 23 of the lid-side handle 20, and the first spring 31 moves the first slider 30 rearward, as shown in FIG. 9C. The tip 30a of the first slider 30 is retracted from the float valve 61 and released from contact. Therefore, in this way, when the float valve 61 detects the pressure in the pressure cooker 1 in the locked state where the lid 3 is completely overlapped, the float valve 61 rises and rotates the lid 3. When the float valve 61 cannot detect the pressure in the pressure cooker 1 (when the float is lowered), the lid 3 is moved to allow the first slider 30 to move forward. Can be opened.

  When the lid 3 is changed from the locked state to the unlocked state, the leg portion 42 of the second slider 40 moves out of the guide groove 12 while sliding in the guide groove 12 of the container side handle 10, and By moving the second slider 40 forward and simultaneously moving the first slider 30 forward, the notch groove 23 of the lid-side handle 20 and the locking portion 52 of the lock slider 50 are returned to the engaged state, thereby It is preferable to move the first slider 30 and the second slider 40 in the forward direction. That is, the lid side handle 20 may be further moved in the opening direction from FIG. 9C through (B) and (A).

  Next, referring to FIG. 11 and FIG. 12, the lid packing 4 fitted to the inner peripheral edge of the lid 3 and the protrusion 30 b provided at the front in the center direction of the lid 3 in the first slider 30 will be described.

  FIG. 11 shows the positional relationship among the protrusion 30b, the lid packing 4 and the float valve 61 in the first slider 30 in the locked state. When in the locked state, as described above, the first slider 30 moves backward, the engagement between the tip 30a and the float valve 61 is released, and the float valve packing 61a disposed in the hole of the lid 3 is interposed. The float valve 61 that is loosely fitted and slidably moves up and down smoothly, and when the pressure in the pan is increased by heating, the lid packing 4 fitted to the inner peripheral edge of the lid is in the pan. Since the float valve 61 maintains the airtight state by interposing the float valve packing 61a disposed in the hole of the lid 3 due to the internal pressure, in order to further improve the airtightness in the pan, the pressure in the pan Rises quickly and the float valve 61 rises immediately.

  FIG. 12 shows the positional relationship among the protrusion 30b, the lid packing 4 and the float valve 61 in the first slider 30 in the unlocked state. When in the unlocked state, as described above, the first slider 30 moves forward, the tip 30a of the first slider 30 engages with the float valve 61, and the vertical movement of the float valve 61 is restricted. At that time, the protrusion 30b of the first slider 30 moves forward together with the first slider, enters the protrusion protruding hole 5 formed on the outer peripheral surface of the lid 3, presses the lid packing 4, and the lid packing 4 Immerse in the direction of the inside of the pan. By the immersion of the lid packing 4, the hermetic state between the lid 3 and the pan body 2 is lowered, the steam in the pan leaks out from the periphery of the lid packing 4, and the pressure in the pan is lowered.

  As described above, when the pan body 2 and the lid 3 are in a completely fitted state, the first slider 30 is retracted for the first time to be in a locked state. In the state where the lid 3 in FIG. 9 (A) has started to close and in the incompletely fitted state in FIG. 9 (B), it is not locked and the airtight state in the pan body is kept low.

  Thus, since the protrusion 30b is provided near the front center portion of the first slider 30 and the protrusion 30b can be protruded from the protrusion protrusion hole 5 opened on the side of the lid, when the lid 3 is in an incompletely fitted state, The first slider 30 is pushed by the second spring 41, and the protrusion 30 b always protrudes and presses the lid packing 4. This prevents an increase in pressure in the pan. At the time of complete fitting, the protrusion 30b is retracted and stored in the handle. At this time, the lid packing 4 comes into contact with the inner walls of the inner peripheral edge of the lid and the outer peripheral edge of the pan body 2, and the float valve 61 interposes the float valve packing 61 a disposed in the hole of the lid 3. Since the airtight state is maintained, the inside of the pan is sealed and the pressure can be increased. Therefore, when the lid 3 is incompletely fitted, the steam leaks from the lid packing 4 so that the pressure in the pan is not increased, so that safety is improved.

  By providing this protrusion 30b, the exhaust hole of the float valve 61 becomes unnecessary. Thus, the float valve 61 can be quickly raised without requiring a large amount of steam when the float valve 61 is raised.

  In the present embodiment, the lid-side lock mechanism 21 is fitted in the concave groove 22 of the lid-side handle 20, but other configurations are possible by changing the configuration of the constituent members of the lid-side lock mechanism 21. Can be adopted.

  Furthermore, the first slider 30, the second slider 40, and the lock slider 50 constituting the lid side lock mechanism 21 are not limited to the illustrated configurations, and can be appropriately changed in design.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope and the gist of the invention, and are also included in the invention described in the claims of the utility model registration and its equivalent scope.

DESCRIPTION OF SYMBOLS 1 ......... Pressure cooker 2 ......... Pot body 3 ......... Ladder 3a ...... Outer peripheral side wall 4 ......... Packing for lid 5 ......... Protrusion projection hole 10 ... Container handle 11 ... Container lock mechanism ...... Guide groove 12a ... engagement part 12b ... tapered side wall 12c ... inlet 13 ... convex wall 20 ... lid side handle 21 ... lid side locking mechanism 22 ... concave groove 23 ... notched groove 30 ... first 1 Slider 30a ... Tip 30b ... Projection 31 ... First spring 32 ... Base 33 ... Slider body 34 ... Empty 35 ... Rear wall 36 ... Through hole 37 ... Claw 40 ... Second slider 41 …… Second spring 42 …… Leg 43 …… Spring receiving portion 44 …… Column portion 45 …… Arm portion 46 …… Spring receiving portion 50 …… Lock slider 51 …… Third spring 52 ...... Locking part 53 …… Box-shaped part 54 …… Locking claw 60 …… Funnel valve mechanism 61 ...... float valve 61a ... float valve packing

Claims (1)

Provided on the lid that covers the opening of the pan body,
A lid packing that is fitted to the inner peripheral edge of the lid and fits the pan body and the lid in an airtight manner;
A lid-side handle having a concave groove formed on the bottom surface and a notch groove that intersects and communicates with the concave groove;
A first slider provided in a concave groove of the lid-side handle and provided with a first spring for biasing toward the lid center;
A projection for pressing the packing for the lid provided at the front of the first slider in the center direction;
A protrusion projecting hole formed on the outer peripheral surface of the lid and projecting the protrusion from the outer peripheral surface of the lid to the inside of the lid in order to press the lid packing at the inner peripheral edge of the lid;
When the lid and the pan body are in an airtight state by the lid packing, the lid moves up and down by the pressure in the pan, does not have an exhaust function, and is airtight by interposing a float valve packing disposed in the hole of the lid. A float valve that is slidably fitted to maintain the state;
A second slider that is fitted to the first slider and has a leg at the bottom, and a second spring that urges the lid toward the center;
A third spring that is fitted to the first slider and urges in a direction orthogonal to the center direction of the pan body is provided, and one end portion is in contact with a convex wall protruding from the upper surface of the container-side handle. A lid-side lock mechanism comprising a lock slider having a stop;
A container-side handle that is attached to the outer peripheral wall of the pan body and has a guide groove formed on an upper surface thereof, and a convex wall that projects adjacent to the guide groove
The guide groove and convex wall of the container side handle are configured as a container side locking mechanism,
When the lid side handle is opposed to the container side handle and polymerization is performed, the pressure in the pressure cooker is detected by the float valve mechanism,
When the lid side handle is not superposed on the container side handle, the lid packing pressing projection provided on the first slider presses the lid packing to reduce the airtight state in the pressure cooker,
A pressure cooker lid opening / closing provided with a locking mechanism comprising the lid-side locking mechanism and the container-side locking mechanism that can be locked or unlocked to the pan body only by rotating the lid. Locking device.

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