JP3175743U - 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.
When a lid side handle is overlapped with a container side handle, the pressure in the pressure cooker 1 is detected by a float valve mechanism 60, and only the lid is rotated without providing an operation lever or the like. Thus, a lock mechanism comprising the lid-side lock mechanism 21 and the container-side lock mechanism 11 that can be locked or unlocked to the pan body is provided. The lid-side locking mechanism includes the synergistic action of the three sliders, the first and second sliders 30 and 40 and the lock slider 50, and the three springs that expand and contract each slider, and the container-side lock of the container-side handle 10. By combining the mechanism (guide groove and convex wall) 11 and the float valve mechanism 60, the tip of the first slider 30 is automatically raised and lowered on the upper surface of the float valve 61 simply by rotating the lid side handle. Regulate 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.
[Selection] Figure 2

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 the registered utility model publication (Patent Document 1) of Utility Model Registration No. 3161838 is known.

  The lid opening / closing lock device described in Patent Document 1 includes a first handle provided on the container side and a second handle provided on the lid, and rotates the second handle in the circumferential direction to The first handle and the second handle are configured to be in a locked state when they are overlapped with each other.

  The configuration will be described with reference to the reference numerals in the attached drawings. An operation portion (40) provided on the second handle (12) and operated to release the locked state of the lid with respect to the container, A lid-side lock portion (30) provided on the two handles (12) and displaced from the lock position to the unlock position based on the operation of the operation portion (40); and the first handle (11) provided on the lid side When the lock portion (30) is in the locked position, it engages with the lid side lock portion (30) to restrict the rotation of the lid in the circumferential direction, and when the lid side lock portion (30) is in the unlocked position. The container-side lock part (20) that allows the cover-side lock part (30) to be disengaged and allows the cover to rotate in the circumferential direction, and the second handle (12) are provided, and the operation part (40 ), The lid side lock part (30) When the lid side lock portion (30) is locked at the unlock position when displaced from the lock position to the lock release position, and when the lid is rotated in the circumferential direction and attached to the container, the lid side lock portion (30 ) Is displaced from the unlocked position to the locked position (50, specifically 51, 52, 53, 55, 57, 60, 61, 62, 63).

  In the thing of the patent document 1 which consists of the said structure, when the lid is unlocked, the lid side lock part (30) is displaced from the lock position to the lock release position by operating the operation part (40) with a thumb or the like. The first engaging portion (51) engages with the first engaged portion (62), thereby locking the lid side lock portion (30) at the unlocked position. Thus, since it can be maintained in the unlocked state only by operating the operation unit (40), the operation for maintaining the unlocked state and the pan lid (4) are rotated in the opening direction (D3). It is not necessary to perform the operation to be performed at the same time, and the operability when removing the pan lid can be improved. On the contrary, when attaching the lid to the pan body, if the pan lid (4) is rotated in the closing direction (D2), the lid side lock portion (30) is automatically displaced from the unlocked position to the locked position. The operability when attaching the pan lid (4) can also be improved.

Registered Utility Model Gazette of Utility Model Registration No. 3161838

  However, in the lid opening / closing lock device of Patent Document 1, when the lid is unlocked, the operation portion (40) must be operated with a thumb or the like, and the lid side lock portion (30) is locked from the unlock position. As the locking mechanism (50) that is displaced to the position, the first engaging portion (51), the first engaged portion (62), the second engaging portion (52), and the second engaged portion (63) There are disadvantages that require a large number of components such as the holding member (53) and the springs (54) and (57). Furthermore, the thing of patent document 1 also has the problem that it is not linked with the float valve which detects the pressure in a container.

  The present invention has been devised in order to solve the problems of the above-described conventional example, and it is not necessary to provide an operation part to maintain the unlocked state of the lid as in the conventional example, and the lid can be opened and closed. The safety is improved so that the lid cannot be opened when the float valve on the lid detects the pressure in the pressure cooker, and can be opened when no pressure is detected. Furthermore, an object of the present invention is to provide a pressure cooker lid opening / closing lock device having a simple structure and no malfunction without using a locking mechanism made up of a large number of components as in the prior art.

In order to achieve the above object, a pressure cooker lid opening / closing lock device according to claim 1 of the present invention is provided on a lid that covers an opening of a pan body, and has a groove formed on a bottom surface and intersects the groove. A lid-side handle having a notch groove communicated therewith, a first slider provided with a first spring provided in a concave groove of the lid-side handle, and a leg portion fitted to the first slider and provided at a lower portion. And a second slider provided with a second spring, a third spring fitted in the first slider, in a direction perpendicular to the center direction of the pan body, and at one end of the container-side handle A lid-side locking mechanism comprising a lock slider having a locking portion that comes into contact with a convex wall projecting from the upper surface;
While providing a float valve mechanism to detect the internal pressure of the pan body on the lid,
A container-side handle that is attached to the outer peripheral wall of the pan body and has a guide groove formed on the upper surface, and a convex wall that is provided 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 handle on the lid side is overlapped with the handle on the container side, the pressure in the pressure cooker is detected by the float valve mechanism, and it is locked to the pan body only by rotating the lid without providing an operation lever. Or a lock mechanism including the lid-side lock mechanism and the container-side lock mechanism that can be unlocked.

The lid opening / closing locking device for the pressure cooker according to claim 2 of the present invention is the lid opening / closing locking device according to claim 1, wherein the lid side locking mechanism provided on the lid side handle is:
When the lid is put on the pan body and the lid side handle is rotated in the closing direction to lock the lid, the second slider leg is moved to the engaging portion of the guide groove of the container side handle. When the first slider is stationary and only the second slider moves backward, and the container-side handle and the lid-side handle are completely overlapped, the locking portion of the lock slider is placed on the upper surface of the container-side handle. After contacting the protruding convex wall, the engagement state between the notch groove of the lid side handle and the locking portion of the lock slider is released, and the first slider is moved backward by the first spring,
Further, when the lid is changed from the locked state to the unlocked state, the leg portion of the second slider moves out of the guide groove while sliding in the guide groove of the container side handle, and the second slider is moved forward. At the same time, the first slider is also moved forward, and the notch groove of the lid side handle and the locking portion of the lock slider are returned to the engaged state, thereby holding the first slider and the second slider in the forward direction. It is characterized by doing.

A lid opening / closing lock device for a pressure cooker according to claim 3 of the claim of the present invention is the float valve mechanism for detecting the internal pressure of the pan body according to claim 1 or 2,
On the axis connecting the center of the lid and the first slider, a float valve for detecting the internal pressure of the pan body is provided on the lid at a position in front of the tip of the first slider. When the float valve detects the pressure in the pressure cooker, the float valve rises, and the lid cannot be pivoted open to prevent the first slider from moving in the forward direction. Is not detected, the float valve descends and the tip of the first slider abuts the float valve so that the lid can be opened to allow the first slider to move forward. Or it is comprised so that contact | abutting may be cancelled | released.
Here, “contact” is not limited to the case where the tip of the first slider hits the float valve and locks the float valve, but the tip of the first slider protrudes to the upper surface of the float valve. It should be understood in a broad sense, including the case where the float valve is not in contact with the float valve and prevents the float valve from rising above a certain level. Further, “releasing contact” means that in the above case, the first slider moves backward and the tip of the first slider cannot regulate the rise of the float valve.

  According to the first aspect of the present invention, the lid-side handle is provided on the lid that covers the opening of the pan body and has a concave groove formed on the bottom surface, and a notch groove that intersects and communicates with the concave groove. A first slider provided with a first spring provided in a concave groove of the lid-side handle, and a second slider fitted with the first slider and having a leg at the lower part and provided with a second spring And a third spring provided in a direction perpendicular to the center direction of the pan body and fitted to the first slider, and at one end, a latch which is in contact with a convex wall projecting from the upper surface of the container-side handle A lid-side lock mechanism comprising a lock slider having a portion, a float valve mechanism for detecting the internal pressure of the pan body on the lid, and a guide groove formed on the upper surface of the pan body, A container side having a convex wall projecting adjacent to the guide groove And the guide groove and convex wall of the container-side handle are configured as a container-side locking mechanism, and when the lid-side handle is overlapped with the container-side handle, the pressure in the pressure cooker is controlled by the float valve mechanism. It has a lock mechanism comprising the lid side lock mechanism and the container side lock mechanism, which can be detected and locked to the pan body only by rotating the lid without providing an operation lever or the like. It is characterized by that.

As described above, the lid side locking mechanism has the synergistic action of the three sliders of the first and second sliders and the lock slider and the three springs for extending and contracting each slider, and the container side locking mechanism of the container side handle. By combining the (guide groove and convex wall) and the float valve mechanism, the tip of the first slider is automatically raised and lowered on the top surface of the float valve by simply rotating the lid handle, and the float valve is raised. When the pressure in the pressure cooker is present, the lid is prevented from opening and closing, and when there is no pressure in the pressure cooker, the lid is not prevented from opening and closing.
Therefore, according to the present invention, in the lid opening / closing lock device disclosed in Patent Document 1, it is not necessary to provide an operation portion that is essential for operation when unlocking the lid. Since it is not necessary to rotate the lid side handle while pressing, the lid can be opened and closed easily and lightly. Moreover, it consists of many components, such as a 1st engaging part, a 1st to-be-engaged part, a 2nd to-be-engaged part, a 2nd to-be-engaged part, a holding member, a spring, which are displaced from a lock release position to a lock position. Since no locking mechanism is required, the structure is simple and there is no malfunction. Furthermore, since the first and second sliders and the lock slider of the present invention do not press the packing fitted to the opening edge of the pan body, the residual pressure in the pressure pan causes the steam from the packing to There is no eruption.

According to the invention of claim 2, the lid side locking mechanism provided on the lid side handle is
When the lid is put on the pan body and the lid side handle is rotated in the closing direction to lock the lid, the second slider leg is moved to the engaging portion of the guide groove of the container side handle. When the first slider is stationary and only the second slider moves backward, and the container-side handle and the lid-side handle are completely overlapped, the locking portion of the lock slider is placed on the upper surface of the container-side handle. After contacting the protruding convex wall, the engagement state between the notch groove of the lid side handle and the locking portion of the lock slider is released, the first slider is moved rearward by the first spring, When the lid is changed from the locked state to the unlocked state, the leg of the second slider moves out of the guide groove while sliding in the guide groove of the container-side handle, and the second slider is moved forward. At the same time, the first slider Also moved forward, by returning the locking portion of the notch groove and lock slider of the lid side handle in the engaged state, characterized in that for holding the first slider and the second slider in the forward direction.
As described above, the first slider, the second slider, the lock slider, the first spring, the second spring, the third spring, the concave groove, the notch groove, the convex wall can be formed by simply rotating the lid side handle. Due to the synergistic effect, the tip of the first slider can be automatically moved up and down on the upper surface of the float valve, and the rise of the float can be restricted. When there is pressure in the pressure cooker, the lid is prevented from opening and closing, When there is no internal pressure, the structure is such that the opening and closing of the lid is not prevented, and the lid side lock mechanism can be easily and easily assembled.

According to the invention of claim 3, the float valve mechanism for detecting the internal pressure of the pan body is:
On the axis connecting the center of the lid and the first slider, a float valve for detecting the internal pressure of the pan body is provided on the lid at a position in front of the tip of the first slider. When the float valve detects the pressure in the pressure cooker, the float valve rises, and the lid cannot be pivoted open to prevent the first slider from moving in the forward direction. Is not detected, the float valve descends and the tip of the first slider abuts the float valve so that the lid can be opened to allow the first slider to move forward. Or it is comprised so that contact | abutting may be cancelled | released.
Thus, when the float valve detects the pressure in the pressure cooker in the locked state of the lid (that is, when the float valve rises and there is residual pressure in the pressure cooker), the first slider Cannot move forward and the contact with the float valve is released, so the lid cannot be opened. On the other hand, when the inside of the pressure cooker is not detected (that is, when the float valve is lowered and there is no residual pressure in the pressure cooker and is equal to the atmospheric pressure), the first slider is moved forward and the first slider is moved. Since the front end portion can be opened by being brought into contact with the float valve, a safe lid opening / closing lock mechanism can be provided. In other words, the opening / closing of the lid by the lid-side handle can be confirmed by raising or lowering the float valve.

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 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 explanatory drawing which showed the relationship between an example of a float valve mechanism, and a 1st slider, (A) is a state in which there is no pressure in a pressure cooker, the front-end | tip part of a 1st slider protrudes, and a float valve has fallen. (B) shows a state in which there is pressure in the pressure cooker, the tip of the first slider moves backward, and the float valve is raised. It is an operation principle diagram showing the relationship between the lid side lock mechanism and the float valve mechanism, (A) shows the unlocked state of the lid when the first slider comes into contact with the float valve, and (B) shows the above (A ) The second slider is slightly retracted from the position, and the locking part of the lock slider and the convex wall of the container side handle are in contact with each other. (C) is a complete superposition 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 cancel | released contact | abutted with the float valve mechanism, and the float valve was rising.

An example of an embodiment of the present invention will be described below with reference to FIGS.
1, 2, and 11, 1 is a pressure cooker, and this pressure cooker 1 closes the pan body 2 with the container-side handle 10 attached to the outer peripheral side wall and the opening of the pan body 2. And the lid 3 to which the lid side handle 20 is attached. The container-side handle 10 and the lid-side handle 20 have corresponding shapes. As shown in FIG. 1, the container-side handle 10 and the lid-side handle 20 overlap each other when the lid 3 is locked to the pan body 2.

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 6 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, the handles 10 and 20 are superposed as shown in FIG. Since the 1st slider can be hold | maintained at the state lowered | hung back, the pan main body 2 and the lid | cover 3 are hold | maintained in an airtight state, without preventing the raise of a float valve.
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 opened (see FIG. 9 (A), In FIG. 10 (A)), when the lid-side handle 20 is rotated in the opening direction along the circumferential direction of the pan body 2, the locked state is released by the lock mechanism 6, and the lid 3 is removed from the pan body 2. (Open).

  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, when packing is fitted to the inner peripheral edge of the lid 3 and the pot body 2 and the lid 3 are locked, the pressure in the pressure cooker 1 does not escape to the outside, and the internal pressure can be increased. It is like that.

According to the linkage operation with the lock valve mechanism 60 described later, the container side lock mechanism 11 and the lid side lock mechanism 21 are engaged with each other, whereby the lid 3 is locked with respect to the pan body 2, The lid 3 is unlocked with respect to the pan body 2 by releasing the engagement of 21.
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. In the guide groove 12, the leg portion of a second slider, which will be described later, provided on 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 in the locked state, the leg portion of the second slider is engaged with the engaging portion 12 a of the guide groove 12. As shown in FIG. 8, the guide 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 is fitted in the concave groove 22.

  The lid-side lock mechanism 21 includes a first slider 30 provided with a first spring 31 such as an extension spring, a leg 42 in a lower portion of the first slider 30 and a second spring such as an extension spring. A second slider 40 provided with a spring 41 and a third spring 51 such as a telescopic spring are provided in a direction perpendicular to the center direction of the pan body 2 and fitted to the first slider 30. The lock slider 50 has a locking portion 52 that comes into contact with the convex wall 13 protruding from the upper surface of the side handle 10.

  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 tip of the first slider 30 is always pushed forward to prevent the float valve 61 from being lifted except during the polymerization.

  In this embodiment, as shown in FIG. 6, the second slider 40 includes a pillar portion 44, a pair of arm portions 45, 45 extending rearward from the left and right sides of the pillar portion 44, and a pillar. The leg part 42 suspended from the lower part of the part 44, the spring receiving part 43, and the spring receiving part 46 formed slightly below the spring receiving part 43 are formed. 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 hung on the side wall of the concave groove 22 formed on the bottom surface of the groove.

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 highly safe lid opening / closing lock mechanism, the present invention provides a lid on the axis connecting the center portion of the lid 3 and the first slider 30 at a position in front of the tip of the first slider 30. 3, a float valve 61 is provided as a float valve mechanism 60 for detecting the internal pressure of the pan body 2. When the float valve 61 detects the pressure in the pressure cooker 1 when the lid 3 is locked, When the valve 61 is raised and the forward movement of the first slider 30 is prevented, the lid 3 cannot be opened, and the pressure in the pressure cooker 1 is not detected, the float valve 61 is lowered and the first By allowing the slider 30 to move in the forward direction, the tip 30a of the first slider 30 abuts on the float valve 61 or releases the abutment so that the lid 3 can be opened. Structure Are you.

As the float valve mechanism 60, in this embodiment, as shown in FIGS. 9A and 9B, for example, a weight type float valve 61 is employed. The float valve 61 is fitted in a stepped outer cylinder 62 fitted in the through hole 3b of the lid 3 so as to be movable up and down.
9A and 9B, reference numeral 24 denotes a communication hole formed in the lid-side handle 20 that communicates with the gap between the float valve 61 and the outer cylinder 2, and 63 denotes an upper end portion of the float valve 61. This is a pilot section that can be seen from the outside.

In FIG. 9A, the float valve 61 is lowered by its own weight when there is no pressure in the pressure cooker 1, and the tip portion 30 a of the first slider 30 extends from the guide hole 64 on the bottom surface side of the lid side handle 20. It has entered (protruded) and restricted the float valve 61 from rising and shows a state where the lid 3 can be opened.
FIG. 9B shows that when the pressure is in the pressure cooker 1, the float valve 61 is raised by the internal pressure, the tip 30 a of the first slider 30 is retracted and the float valve 61 is raised, 3 shows a state where 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. 10A 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 (FIG. 9 ( In this case, the lid 3 can be opened and closed.

  10B, the lid 3 is further rotated in the closing direction than in the case of FIG. 10A, 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. 10C shows a locked state in which the lid 3 is further rotated in the closing direction than in the case of FIG. 10B and the lid 3 is completely overlapped and locked. In this case, the lid side handle 20 is closed from the state of FIG. 10B 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. 10B) and the notch of the lid-side handle 20 is notched. 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. The tip 30a of the first slider 30 is retracted from the float valve 60 and released from contact. Therefore, when the float valve 60 detects the pressure in the pressure cooker 1 in the locked state where the lid is completely overlapped, the float valve 61 rises and the first slider 30 When the lid 3 cannot be rotated and opened to prevent forward movement (see FIGS. 9B and 10C), and the pressure in the pressure cooker 1 is not detected (the float is lowered) ), The lid can be opened to allow the first slider 30 to move forward (see FIG. 9A).

    When the lid is changed from the locked state to the unlocked state, the leg portion 42 of the second slider 40 moves outside the guide groove 12 while sliding in the guide groove 12 of the container-side handle 10, and 2 The slider 40 is moved forward, and at the same time, the first slider 30 is also moved forward, and 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, whereby the first It is preferable to move the slider 30 and the second slider 40 in the forward direction. That is, it is preferable to move the lid side handle 20 further in the opening direction from FIG. 10 (C) through (B) and (A).

  In the present embodiment, the float valve 61 employs a configuration as shown in FIG. 9, but is not limited thereto, and the tip of the first slider 30 abuts on the float valve 61 or releases the abutment. Any other configuration can be used as long as the configuration is appropriate.

  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.

1 Pressure cooker
2 Pan body 3 Lid 6 Lock mechanism 10 Container side handle 11 Container side lock mechanism 12 Guide concave groove 13 Convex wall 20 Lid side handle 21 Lid side lock mechanism 22 Concave groove 23 Notch groove 30 First slider 31 First spring 40 Second slider 41 Second spring 42 Leg 50 Lock slider 51 Third spring 52 Locking portion 60 Float valve mechanism 61 Float valve

Claims (3)

A lid-side handle provided on a lid that covers the opening of the pan body and having a concave groove formed on the bottom surface, a notch groove that intersects and communicates with the concave groove, and a concave groove on the lid-side handle. A first slider provided with a first spring, a second slider fitted with the first slider and having a leg portion at the bottom, and provided with a second spring, and fitted with the first slider And a lid formed of a lock slider having a third spring in a direction orthogonal to the center direction of the pan body and having a locking portion that abuts a convex wall projecting from the upper surface of the container-side handle at one end. Side locking mechanism;
While providing a float valve mechanism to detect the internal pressure of the pan body on the lid,
A container-side handle that is attached to the outer peripheral wall of the pan body and has a guide groove formed on the upper surface, and a convex wall that is provided 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 handle on the lid side is overlapped with the handle on the container side, the pressure in the pressure cooker is detected by the float valve mechanism, and it is locked to the pan body only by rotating the lid without providing an operation lever. Or a lid opening / closing locking device for a pressure cooker, comprising a locking mechanism comprising the lid-side locking mechanism and the container-side locking mechanism that can be unlocked. The lid side locking mechanism provided on the lid side handle is
When the lid is put on the pan body and the lid side handle is rotated in the closing direction to lock the lid, the second slider leg is moved to the engaging portion of the guide groove of the container side handle. When the first slider is stationary and only the second slider moves backward, and the container-side handle and the lid-side handle are completely overlapped, the locking portion of the lock slider is placed on the upper surface of the container-side handle. After contacting the protruding convex wall, the engagement state between the notch groove of the lid side handle and the locking portion of the lock slider is released, and the first slider is moved backward by the first spring,
Further, when the lid is changed from the locked state to the unlocked state, the leg portion of the second slider moves out of the guide groove while sliding in the guide groove of the container side handle, and the second slider is moved forward. At the same time, the first slider is also moved forward, and the notch groove of the lid side handle and the locking portion of the lock slider are returned to the engaged state, thereby holding the first slider and the second slider in the forward direction. The pan lid opening / closing lock device according to claim 1. The float valve mechanism for detecting the internal pressure of the pan body is
On the axis connecting the center of the lid and the first slider, a float valve for detecting the internal pressure of the pan body is provided on the lid at a position in front of the tip of the first slider. When the float valve detects the pressure in the pressure cooker, the float valve rises, and the lid cannot be pivoted open to prevent the first slider from moving in the forward direction. Is not detected, the float valve descends and the tip of the first slider abuts the float valve so that the lid can be opened to allow the first slider to move forward. 3. The pressure cooker lid opening / closing lock device according to claim 1, wherein the pressure cooker lid opening / closing lock device is configured to release contact.

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