JP6273497B2 - Locking device and container with lid using the same - Google Patents

Description

  The present invention mainly relates to a locking device provided on a lid of a lidded container such as a pressure rice cooker, and a lidded container using the same.

  Conventionally, containers with lids, such as rice cookers, where the internal pressure of the storage part exceeds the atmospheric pressure when the lid is closed have been proposed (for example, Patent Document 1, Patent Document 2, and Patent Document). 3).

  In such a container with a lid, a lock device that locks the lid is employed because it is necessary to keep the lid closed even when the internal pressure of the housing portion increases. In order to release this lock, a release button operated by the user is provided. In view of safety, a technique has been proposed in which the lid is not opened even when the release button is pressed when the inside of the container reaches a predetermined pressure or more.

  FIG. 10 is a diagram showing the structure of a conventional locking device for a container with a lid described in Patent Document 1. As shown in FIG. FIG. 10A is a diagram showing a state when the pressure inside the container is less than a predetermined value, and FIG. 10B is a diagram showing a state when the pressure inside the container is greater than or equal to a predetermined value.

  As shown in FIG. 10, the lock device 122 includes a plunger 117, a release button lock member 118, a release button 124, and a lid hook lever 123.

  As shown in FIG. 10A, when the pressure inside the container 107 is less than a predetermined value, the plunger shaft 117b is located on the right side of the paper surface, and the release button lock member 118 interlocked with the shaft 117b. Is also moved to the right. Therefore, the release button lock member 118 exists at a position separated from the lid hook lever 123. Further, the locking claw 123b provided at the tip of the lid hook lever 123 is locked by a locking portion 104c connected to the main body of the container 107, and the lid 130 is fixed to the main body. It has become.

  As shown in FIG. 10A, when the pressure in the container 107 is relatively low, when the user presses the release button 124 to open the lid 130, the lid hook lever 123 is centered on the shaft 123a. Then, it turns clockwise toward the page. Then, the locking claw 123b and the locking portion 104c are unlocked. Then, the lid 130 is opened by the biasing force of the spring.

  On the other hand, as shown in FIG. 10B, when the pressure inside the container 107 is equal to or higher than a predetermined value, the shaft 117b of the plunger 117 moves leftward toward the paper surface, and the release button lock member 118 also moves leftward. . Further, the inner lid 111 also moves upward toward the paper surface as the pressure inside the container 107 increases. Then, the stopper 119 provided on the inner lid 111 moves upward against the urging force of the spring 120. Then, the stopper 119 enters the recess 118d provided on the lower side of the release button lock member 118, thereby locking the release button lock member 118.

  Assume that the user presses the release button 124 in such a state as shown in FIG. 10B to open the lid. In this case, the contact piece 123c provided at the end of the lid hook lever 123a comes into contact with the end 118e of the release button lock member 118, and the lid hook lever 123 cannot rotate.

  With such a configuration, when the pressure inside the container 107 is equal to or higher than a predetermined value, a configuration in which the lid cannot be opened even if the user presses the release button 124 is realized.

JP 2008-48767 A Japanese Patent No. 5380669 Japanese Patent No. 5509363

  However, the technique described in Patent Document 1 described above has the following problems. Specifically, it is assumed that the release button is pressed while the pressure in the container is equal to or higher than a predetermined value. At this time, the pressure in the container may decrease for some reason while the release button is pressed. In such a case, when the release button is pressed, the pressure in the container is high, so the lid does not open, but if the release button is pressed and the pressure in the container decreases after a while, the release button locks. The lock by the member is released, and the lid suddenly opens. Such an operation may cause anxiety to the user and is not desirable.

  The present invention has been made in view of the above problems, and even if the release button is held in a state where the internal pressure of the container is high and the pressure of the container decreases in this state, the lid A locking device that does not open and a lidded container using the same.

  The locking device of the present invention is a locking device used for a container with a lid provided with a lid and a main body. A hook shaft provided on the lid side; a hook lever that is held by the hook shaft and locks the lid with respect to the main body by turning in a predetermined direction; and a hook lever that is held by friction. And a stopper shaft provided in parallel with the hook shaft on the hook lever. In addition, a lid opening button that is pressed when the lid is opened, a stopper that is held by the stopper shaft and pressed by the lid opening button, a stopper spring that biases the stopper in a predetermined direction, and a hook lever And a hook spring biasing in the direction. The biasing force of the stopper spring is configured to be stronger than the biasing force of the hook spring. When the stopper is pressed in a state where the pressure in the container is lower than the predetermined pressure, both the stopper and the hook lever are rotated in the direction opposite to the predetermined direction, and the hook lever is unlocked by the holding portion. On the other hand, if the stopper is pressed in a state where the pressure in the container is equal to or higher than the predetermined pressure, only the stopper rotates in the direction opposite to the predetermined direction, the hook lever does not rotate, and the hook lever is locked by the holding portion. Is configured not to release.

  Moreover, the container with a lid | cover of this invention is equipped with the above-mentioned locking device.

  With such a configuration, even when the release button is held in a state where the internal pressure of the container is high and the pressure of the container is reduced in that state, the locking device that does not open the lid is used. A container with a lid can be provided.

The perspective view of the rice cooker which is an example of the container with a lid in embodiment of this invention The perspective view which shows the state which opened the cover of the rice cooker in embodiment of this invention. The disassembled perspective view which shows the main structures of the rice cooker in embodiment of this invention. The perspective view which shows the state which removed the upper outer member of the lid | cover of the rice cooker in embodiment of this invention from the lower outer member. The perspective view which looked at the lid | cover opening apparatus in embodiment of this invention from the top The perspective view which looked at the lid opening apparatus in embodiment of this invention from the bottom (A) The top view of the lid | cover 3 of the rice cooker 50 in embodiment of this invention, (b) Sectional drawing of the lid | cover of the rice cooker in embodiment of this invention (A) Sectional view taken along line 8a-8a in FIG. 7 (a), (b) Sectional view showing enlarged region B in FIG. 7 (b) (A) The figure which shows the structure of the state in which the lid | cover 3 was closed of the lid | cover opening device 8 which is a locking device in embodiment of this invention, (b) The lid | cover opening device 8 which is a locking device in embodiment of this invention. The figure which shows the structure when the lid | cover open button 7 is pushed in the normal state whose container internal pressure is less than predetermined pressure, (c) of the lid | cover opening apparatus 8 which is a locking device in embodiment of this invention, The figure which shows a structure when the lid | cover open button 7 is pushed in the state in which the pressure in a container is more than predetermined pressure. (A) The figure which shows a state when the pressure inside the container of the locking device of the conventional container with a lid described in patent document 1 is less than predetermined value, (b) The conventional lid described in patent document 1 The figure which shows the state when the pressure inside the container of the locking device of a container with a pressure is more than predetermined value

  Embodiments of the present invention will be described below. Note that the present invention is not limited to the contents described in this embodiment.

  In addition, in this Embodiment, it demonstrates using a rice cooker as an example of a container with a lid | cover. In addition, the container with a lid | cover of this invention is not limited to a rice cooker, For example, it is possible to apply to the container with a lid | cover in which a container inside becomes high voltage | pressure, such as a pressure cooker, an electric pot, and a humidifier.

[Overall configuration of rice cooker]
First, the whole structure of the pressure type rice cooker which concerns on embodiment of this invention is demonstrated.

  FIG. 1 is a perspective view of rice cooker 50 in the embodiment of the present invention. FIG. 2 is a perspective view showing a state where the lid 3 of the rice cooker 50 is opened. FIG. 3 is an exploded perspective view showing a main configuration of the rice cooker 50. FIG. 4 is a perspective view showing a state where the upper outer member 3a of the lid 3 of the rice cooker 50 is removed from the lower outer member 3b.

  The pressure-type rice cooker 50 according to the present embodiment is stored in the substantially bottomed cylindrical rice cooker body 1 having a pot storage portion 1a formed therein, and the pot storage portion 1a. And a pan 2 into which the cooked rice to be included is placed. A lid 3 having a hollow structure capable of opening and closing the upper opening of the rice cooker body 1 is attached to the top of the rice cooker body 1. A substantially disk-shaped inner lid 4 capable of sealing the upper surface opening of the pan 2 is detachably attached to the inside of the lid 3 (the side covering the upper opening of the pan 2). In the present embodiment, the lid 3 and the inner lid 4 constitute a lid that can open and close the upper opening of the pan 2.

  As shown in FIG. 4, the lid 3 includes an upper outer member 3 a and a lower outer member 3 b that constitute the outer shell of the lid 3. The lid 3 includes a hinge shaft 3A. The hinge shaft 3 </ b> A is an opening / closing shaft of the lid 3, and both end portions thereof are rotatably held by the upper frame 1 b of the rice cooker body 1. A torsion coil spring (not shown) is attached around the hinge shaft 3A. The torsion coil spring urges the lid 3 in a direction (opening direction) away from the upper opening of the pan 2 around the hinge shaft 3A.

Inside the lid 3, a lid opening device 8 which is a locking device is provided. The lid opening device 8 is engaged with a part of the rice cooker body 1, thereby maintaining the state where the lid 3 blocks the upper surface opening of the pan 2.

  The lid opening device 8 is configured such that when the lid opening button 7 provided on the lid 3 is pressed in a state where the lid 3 closes the upper surface opening of the pan 2, the hook lever 14 moves in the direction of arrow A1 about the shaft 14c. Rotate. Thereby, engagement with the lid opening device 8 and a part of the rice cooker body 1 is disengaged, and the lid 3 is away from the upper opening of the pan 2 around the hinge shaft 3A by the biasing force of the torsion coil spring. To turn. And the lid | cover 3 will be in the open state which does not block | close the upper surface opening part of the pan 2. FIG.

  For example, the lid 3 is configured to stop rotating when rotated by a predetermined angle, for example, 90 degrees about the hinge shaft 3A from the position where the upper surface opening of the pan 2 is closed.

  The lid 3 displays various information such as the rice cooking course and cooking time, and a specific rice cooking course from a plurality of rice cooking courses such as a white rice course, a brown rice course, and a white rice (soft) course. A selectable display operation unit 33 is provided. In addition to selecting a rice cooking course, the display operation unit 33 includes a plurality of buttons such as a rice cooking start button so that instructions for starting, canceling, and making a reservation can be given. The user can operate the display operation unit 33 to select a specific rice cooking course and refer to the start of cooking while referring to the display content.

[Configuration of locking device]
Next, the configuration of the lid opening device 8 which is the locking device in the present embodiment will be described in detail.

  FIG. 5 is a perspective view of the lid opening device 8 according to the embodiment of the present invention as viewed from above. FIG. 6 is a perspective view of the lid opening device 8 as viewed from below. FIG. 7A is a plan view of the lid 3 of the rice cooker 50 in the embodiment of the present invention, and FIG. 7B is a cross-sectional view of the lid 3. FIG. 8 is a cross-sectional view in FIG. 8A is a cross-sectional view taken along line 8a-8a in FIG. 7A, and FIG. 8B is an enlarged cross-sectional view of region B in FIG. 7B. 8 (a) and 8 (b) show a state where the upper outer member 3a is attached.

  As shown in FIGS. 5 to 8B, the lid opening device 8 includes a support member 12, a hook lever 14 attached to the support member 12, and a stopper 13 attached to the hook lever 14. It has.

  As shown in FIG. 5, FIG. 7A and FIG. 7B, the support member 12 is disposed such that its main surface 12a is substantially parallel to the lower surface of the lower outer member 3b.

  The hook lever 14 has a first surface 14d and a second surface 14e substantially orthogonal to the first surface 14d. When viewed from the side, the first surface 14d and the second surface 14e are connected at approximately 90 degrees, and the hook lever 14 is configured in an L-shape. As shown in FIG. 5, a shaft 14 c is provided at a portion where the first surface 14 d and the second surface 14 e of the hook lever 14 are connected. Thereby, the hook lever 14 is comprised so that rotation about the axis | shaft 14c is possible.

  Further, at normal times (when the lid opening button 7 is not pressed), the hook lever 14 is moved by the biasing force of the spring 24 (see FIG. 8A) and the upper first surface 14d and the main surface 12a of the support member 12. Are biased so as to be parallel to each other (in the direction A2 in FIG. 8A).

A pair of extending portions 14f are provided on both sides of the second surface 14e in the axis 14c direction. A locking portion 14b is provided at the tip of each of the pair of extending portions 14f. The locking portion 14b is configured to be bent approximately 90 degrees from the extended portion 14f. When the locking portion 14b is locked by the end 1c of the upper frame 1b of the rice cooker body 1, the lid 3 stops the operation of opening by the biasing force of the torsion coil spring, and the lid 3 is closed. It can be.

  A hole 14g is provided at the center of the first surface 14d of the hook lever 14. The hole 14g is formed in such a size and position that the pressing portion 7a (see FIG. 8B), which is a rod-like member that moves when the lid opening button 7 is pressed, passes through the hole. Has been.

  The stopper 13 is disposed in the hole 14g of the hook lever 14. The stopper 13 is a plate-like component formed in a size that fits into the hole 14g. The stopper 13 is configured to be rotatable with respect to the hook lever 14 by a shaft 13 a provided on the hook lever 14. Here, the shaft 13a and the shaft 14c are configured to be parallel to each other. Further, the size and position of the stopper 13 are determined so that only the stopper 13 is pressed by the pressing portion 7a without pressing the hook lever 14 when the lid opening button 7 is pressed.

  That is, in the lid opening device 8 of the present embodiment, if the stopper 13 is not formed on the hook lever 14, the lid 3 is configured not to open even if the lid opening button 7 is pressed. ing.

  The stopper 13 is normally urged from below by the spring 23 (see FIG. 8B) in the direction in which the main surface 13b approaches the first surface 14d of the hook lever 14 (direction A2). The stopper 13 has a restricting portion whose rotation is restricted when the main surface 13b thereof is substantially parallel to the main surface (first surface 14d) of the hook lever.

  Here, the spring 24 that biases the stopper 13 and the spring 23 that biases the hook lever 14 are such that the biasing force of the spring 23 biasing the stopper 13 is the biasing force of the spring 24 biasing the hook lever 14. It has been adjusted to be larger. Further, the urging force of the spring 24 that urges the hook lever 14 is normal (the pressure in the pan 2 is a predetermined pressure (a pressure that can be arbitrarily determined, for example, a gauge pressure of 5 kPa (absolute pressure 1 When the pressure is less than .05 atm (105 kPa)), the cover 3 is adjusted to the extent that the lid 3 is opened with a force sufficient to depress the lid opening button 7 by the user.

  When the lid opening button 7 is pressed in the state of FIG. 8B, that is, in a state where high pressure is not applied to the pan 2 of the rice cooker 50, the stopper 13 is pressed by the pressing portion 7 a. As a result, the first surface 14d of the hook lever 14 is pushed downward together with the stopper 13, and the hook lever 14 rotates about the shaft 14c in the direction indicated by A1 in FIG. 8B. . Thereby, the latching | locking part 14b and the edge part 1c of the upper frame 1b of the rice cooker main body 1 remove | deviate, and the lid | cover 3 opens. The configuration of the stopper 13 and the hook lever 14 and the detailed operation will be described later.

  In the present embodiment, the urging force of the spring 24 that urges the stopper 13 is adjusted to be larger than the urging force of the spring 23 of the hook lever 14 as described above. As a result, the stopper 13 does not rotate with respect to the hook lever 14, but the hook lever 14 and the stopper 13 rotate together, the hook lever 14 rotates in the direction A1, the lock is released, and the lid 3 is released. open.

[Operation of locking device]
Next, the operation of the lid opening device 8 which is the locking device of the present embodiment will be described in more detail.

  FIG. 9 is a cross-sectional view showing the operation of the lid opening device 8 which is the locking device in the embodiment of the present invention. FIG. 9A is a diagram showing a configuration of the lid opening device 8 in a state where the lid 3 is closed. FIG. 9B is a diagram showing a configuration of the lid opening device 8 when the lid opening button 7 is pressed in a normal state where the pressure inside the container is less than a predetermined pressure. FIG. 9C is a diagram illustrating a configuration of the lid opening device 8 when the lid opening button 7 is pressed in a state where the internal pressure of the container is equal to or higher than a predetermined pressure. In FIG. 9A to FIG. 9C, the upper outer member 3a is omitted.

  First, as shown in FIG. 9 (a), when the lid 3 is closed, the locking portion 14b is provided with an end 1c of the upper frame 1b of the rice cooker body 1 (not shown in FIG. 9, FIG. 8). (See (a)). In this state, the main surface 13b of the stopper 13 and the first surface 14d of the hook lever 14 are parallel to each other and located at substantially the same height. In this state, it is assumed that the user presses the lid release button 7 to open the lid 3.

  As shown in FIG. 9B, when the pressure in the container is less than a predetermined pressure (for example, 1.05 atm) (normal state), when the lid opening button 7 is pressed, the pressing portion 7a is The main surface 13b of the stopper 13 is pushed. At this time, since the urging force that the spring 23 urges against the stopper 13 is adjusted to be larger than the urging force that the spring 24 urges against the hook lever 14, the stopper 13 and the hook lever 14 are adjusted. And go around. Then, the tip portion 13c provided at the tip of the stopper 13 on the lower side of the main surface 13b comes into contact with the contact portion 18a of the braking portion 18, whereby the rotation of the hook lever 14 and the stopper 13 is stopped. In this state, when the locking portion 14b and the end 1c of the upper frame 1b of the rice cooker body 1 are unlocked, the lid 3 is opened by the action of the torsion coil spring.

  Next, it is assumed that the pressure in the container is higher than a predetermined pressure (for example, 1.05 atm) (high pressure state). For example, since a normal rice cooking process is performed at 1.2 atmospheres, it will be in a high pressure state during a rice cooking process. In such a case, if it demonstrates using Fig.8 (a), when the pressure in the pan 2 will rise, the lid | cover 3 will be pushed upwards via the inner lid | cover 4. FIG. Thereby, the frictional force in the latching | locking part of the latching | locking part 14b and the edge part 1c of the upper frame 1b of the rice cooker main body 1 becomes very large. That is, the hook lever 14 is hardly rotated as compared with the normal state in which the pressure in the container is low.

  Here, the urging force of the spring 24 that urges the hook lever 14 and the urging force of the spring 23 that urges the stopper 13 are both the end of the locking portion 14b and the upper frame 1b of the rice cooker body 1. It is adjusted so that it may become smaller than the frictional force in the high voltage | pressure state between the parts 1c. Thereby, even if the lid opening button 7 is pressed in a high pressure state, the hook lever 14 does not move, and safety is ensured.

  Assume that the lid opening button 7 is pressed in such a high pressure state. Then, as shown in FIG. 9C, the pressing portion 7a comes into contact with the main surface 13b of the stopper 13 and acts to rotate the stopper 13 about the shaft 13a. At this time, the hook lever 14 does not move because the frictional force at the engaging portion between the engaging portion 14b and the end 1c of the upper frame 1b of the rice cooker body 1 is very large. That is, the stopper 13 rotates with respect to the hook lever 14. And the front-end | tip part 13c of the stopper 13 contact | abuts with the contact part 18a of the braking part 18, and rotation of the stopper 13 stops.

Here, the stopper 13 rotates around the shaft 13a, and the tip end portion 13c thereof abuts against the abutting portion 18a, so that the rightward and downward movements of the stopper 13 are restricted. As a result, even if the user presses the lid opening button 7 any more, the stopper 13 can be
Since the movement is restricted by the abutting portion 18a, it does not move. The hook lever 14 also does not move because the stopper 13 does not move, and the portion of the shaft 13a cannot move, and even if the lid release button 7 is pressed, the force is not applied to the hook lever 14. It does n’t move. Therefore, in this state, the lid opening button 7 is kept pressed, during which the pressure in the pan 2 decreases, and the frictional force at the locking portion between the locking portion 14b and the end 1c of the upper frame 1b of the rice cooker body 1 is reduced. Even if it becomes smaller, the lock will not be released, and the lid 3 will not open, thus ensuring safety.

  Here, even when the frictional force at the engaging portion between the engaging portion 14b and the end 1c of the upper frame 1b of the rice cooker body 1 is reduced, the lock is not released as described above. This is because when the release button 7 is pressed, the movement of the stopper 13 is restricted and the portion of the shaft 13a is fixed, so that the hook lever 14 does not move. That is, such an effect can be achieved by providing the shaft 14c of the hook lever 14 and the shaft 13a of the stopper 13 independently, and providing the shaft 13a of the stopper 13 on the hook lever 14.

  In the present embodiment, both the stopper 13 and the hook lever 14 are made of metal. However, the present invention is not limited to this example, and can be constituted of, for example, a resin or the like.

  In the present embodiment, the hook lever 14 has the hole 14g in the first surface 14d and the stopper 13 is formed in the hole 14g. However, the present invention is not limited to this example. The hole 14g is not necessarily required, and any configuration is possible as long as the stopper 13 and the hook lever 14 are rotated when the lid opening button 7 is pressed.

  Moreover, although the example in which the pair of extending portions 14f are provided on the second surface 14e of the hook lever 14 is shown, the present invention is not limited to this example. For example, a configuration in which a single extended portion 14f is provided or a configuration in which three or more extended portions 14f are provided may be employed.

  Furthermore, the lid opening device 8 which is the lock device of the present embodiment is not limited to the rice cooker 50 having the illustrated configuration, and can be widely applied to rice cookers having various configurations and containers with lids. .

  As described above, the lid opening device 8 which is the locking device of the present embodiment is a locking device used for a lidded container including the lid 3 and the rice cooker body 1. And the hook shaft 14c provided in the lid | cover 3 side, the hook lever 14 which is hold | maintained at the hook shaft 14c, and locks the lid | cover 3 with respect to the rice cooker main body 1 by rotation to a predetermined direction, An end portion 1c which is a holding portion provided in the rice cooker main body 1 is held by friction. The hook lever 14 has a stopper shaft 13a provided in parallel with the hook shaft 14c, a lid release button 7 that is pressed when the lid 3 is opened, and is held by the stopper shaft 13a and is pressed by the lid release button 7 The stopper 13 is provided, a stopper spring 23 that urges the stopper 13 in a predetermined direction (A2 direction), and a hook spring 24 that urges the hook lever 14 in a predetermined direction (A2 direction). The biasing force of the stopper spring 23 is configured to be stronger than the biasing force of the hook spring 24. When the stopper 13 is pressed in a state where the pressure in the container is less than the predetermined pressure, both the stopper 13 and the hook lever 14 rotate in the direction opposite to the predetermined direction (A1 direction), and the hook lever 14 is held by the holding portion. The lock is released. On the other hand, when the stopper 13 is pressed in a state where the pressure in the container is equal to or higher than the predetermined pressure, only the stopper 13 rotates in the direction opposite to the predetermined direction (A1 direction), and the hook lever 14 does not rotate. The hook lever 14 is not unlocked by the holding portion.

  With such a configuration, even when the release button is held in a state where the internal pressure of the container is high and the pressure of the container decreases in that state, only the stopper 13 rotates, and the hook lever The structure which 14 does not move is implement | achieved, and the locking device which does not open the lid | cover 3 can be provided.

  Further, when the stopper 13 is pressed in a state where the pressure in the container is equal to or higher than a predetermined pressure, a contact portion 18a that holds the tip portion 13c of the stopper 13 may be provided on the lid 3 side. Even when the pressure in the container becomes lower than a predetermined pressure with the lid opening button 7 pressed, the tip 13c of the stopper 13 contacts the contact 18a and the stopper 13 rotates. By being restricted, the hook lever 14 may be configured not to rotate.

  Thus, the hook lever 14 does not move in this state by configuring the tip portion 13c to abut against the contact portion 18a in a state where the stopper 13 is pushed down. Therefore, even when the lid opening button 7 is operated in a state where the internal pressure of the container is high, and the pressure in the container is reduced in that state, the lock device that opens the lid 3 more reliably is provided. be able to.

  Further, the lidded container of the present embodiment includes the above-described locking device.

  With such a configuration, even when the release button is held in a state where the internal pressure of the container is high and the pressure of the container decreases in that state, only the stopper 13 rotates, and the hook lever The structure which 14 does not move is implement | achieved, and the container with the lid | cover which does not open the lid | cover 3 can be provided.

  As described above, according to the present invention, the lid is not opened even when the release button is held in a state where the internal pressure of the container is high and the pressure of the container decreases in this state. It is possible to achieve a special effect. Therefore, the present invention is useful mainly as a lock device provided on a lid of a lidded container such as a pressure rice cooker, a lidded container using the same, and the like.

DESCRIPTION OF SYMBOLS 1 Rice cooker main body 1a Pan storage part 1b Upper frame 1c End part (holding part)
2 pan 3 lid 3A hinge shaft 3a upper outer member 3b lower outer member 4 inner lid 7 lid opening button 7a pressing portion 8 lid opening device 12 support member 12a main surface 13 stopper 13a shaft (stopper shaft)
13b Main surface 13c Tip portion 14 Hook lever 14b Locking portion 14c Shaft (hook shaft)
14d 1st surface 14e 2nd surface 14f Extension part 14g Hole 18 Brake part 18a Contact part 23 Spring 24 Spring 33 Display operation part 50 Rice cooker

Claims (3)

A locking device used for a lidded container having a lid and a main body,
A hook shaft provided on the lid side;
A hook lever that is held by the hook shaft and locks the lid with respect to the main body by rotation in a predetermined direction;
A holding portion provided in the main body for holding the hook lever by friction;
A stopper shaft provided in parallel to the hook shaft on the hook lever;
A lid opening button that is pressed when the lid is opened;
A stopper held by the stopper shaft and pressed by the lid opening button;
A stopper spring that biases the stopper in the predetermined direction;
A hook spring that biases the hook lever in the predetermined direction;
The biasing force of the stopper spring is configured to be stronger than the biasing force of the hook spring,
When the stopper is pressed in a state where the pressure in the container is less than a predetermined pressure, both the stopper and the hook lever rotate in a direction opposite to the predetermined direction, and the hook lever is moved by the holding portion. Unlocked,
When the stopper is pressed in a state where the pressure in the container is equal to or higher than the predetermined pressure, only the stopper rotates in a direction opposite to the predetermined direction, and the hook lever does not rotate, and the holding portion Configured to prevent the hook lever from being unlocked,
Locking device. When the stopper is pressed in a state where the pressure in the container is equal to or higher than the predetermined pressure, a contact portion that holds the tip of the stopper is provided on the lid side,
Even when the pressure in the container becomes smaller than the predetermined pressure with the lid opening button pressed, the tip of the stopper abuts on the abutting portion to restrict the rotation of the stopper. Configured so that the hook lever does not rotate.
The locking device according to claim 1. A container with a lid, comprising the locking device according to claim 1.

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