A locking device and pressure cooker thereof

Abstract

The invention discloses a locking device, which includes a stopper block arranged on a pot cover, and the stopper block abuts against a pot tooth of a pot body; the stopper block is connected to a control rod, and a locking hole is arranged at one end of the control rod away from the stopper block; a steam actuator is arranged on a locking cover covering the pot body; the steam actuator includes a stopper block for controlling the motion state of the control rod and a power group for controlling the lifting and lowering of the stopper block into and out of the locking hole through a change in magnetic permeability; the power assembly includes a soft magnetic block, a hard magnetic block, and an elastic member connected between the soft magnetic block and the hard magnetic block. The invention also discloses a pressure cooker using the locking device. The invention can effectively solve the problem of preventing the pot cover from being unable to be opened and preventing steam scalding, and has the advantages of simple structure and high safety factor.

Description

Technical Field

[0001] The invention relates to the field of kitchen appliances, in particular to a locking device and a pressure cooker thereof. Background Art

[0002] Pressure cookers are very frequently used kitchen appliances. The protective device for opening the lid of pressure cookers currently on the market is a floating valve assembly. The principle is that when the electric pressure cooker is working, the pressure inside the pot pushes the floating rod to float up, locking the control rod, so that the stop rod is pressed against the pot teeth on the pot body to prevent the lid from rotating and opening. However, this solution has many disadvantages. Some foods will expand after being cooked, such as rice. When there are enough foods, the floating rod will be pushed up and unable to come down, so that the control rod cannot move and keeps pressing against the pot teeth, making the lid unable to open. In addition, during use, there is still a lot of steam inside the pressure cooker for a period of time after the floating rod falls off. The operator will be in danger of being scalded by the steam if he opens the lid at this time.

[0003] Therefore, it is necessary to develop or improve a locking device and a pressure cooker thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a locking device and a pressure cooker thereof to solve the problem that a pot cover cannot be opened and steam scalds.

[0005] To achieve the above-mentioned purpose, the present invention provides a locking device, which includes a stop block arranged on the pot cover, and the stop block abuts against the pot teeth of the pot body; the stop block is connected to a control rod, and a locking hole is provided at one end of the control rod away from the stop block; a steam actuator is provided on the locking cover covering the pot body; the steam actuator includes a stop block for controlling the movement state of the control rod and a power assembly for controlling the stop block to rise and fall in and out of the locking hole through changes in magnetic permeability; the power assembly includes a soft magnetic block, a hard magnetic block and an elastic member connected between the soft magnetic block and the hard magnetic block.

[0006] Preferably, the steam actuator also includes a shell with an opening on the top and a fixed cover covering the opening; a cavity connected to the opening is provided in the shell; a clearance hole for the stop block to pass through is provided on the fixed cover, and the clearance hole is connected to the cavity; and the power assembly is installed in the cavity.

[0007] Preferably, the hard magnetic block and the soft magnetic block are arranged vertically, and the hard magnetic block is located above the soft magnetic block; a first step portion is formed on the hard magnetic block; a second step portion is formed on the soft magnetic block; one end of the elastic member abuts against the first step portion, and the other end abuts against the second step portion; the hard magnetic block is connected to the stop block.

[0008] Preferably, the steam actuator also includes a sealing gasket and a locking piece; the shell is embedded in a through hole formed on the lock cover; the sealing gasket is sealed in a gap formed between the through hole of the shell and the lock cover, and the sealing gasket is fixed to the lock cover by the locking piece.

[0009] Preferably, the air avoidance hole is concentrically arranged with the locking hole.

[0010] Preferably, the housing is made of aluminum.

[0011] The present invention also provides a pressure cooker, which comprises an outer shell; a cooker body and a locking cover covering the cooker body are arranged inside the outer shell; the outer shell comprises the cooker cover; and also comprises the locking device.

[0012] Preferably, the stop block is mounted on the pot cover; and the steam actuator is mounted on the lock cover.

[0013] Preferably, pot teeth are provided on the outer surface of the pot body facing the outer shell; and cover teeth which are rotatably matched with the pot teeth for locking and unlocking are provided on the locking cover.

[0014] Preferably, a heating device is provided in the pot body.

[0015] The locking device and the pressure cooker provided by the above technical solution have the following beneficial effects compared with the prior art: by providing a stop block, it is ensured that the stop block can stop the pot teeth when a large amount of steam exists in the pressure cooker; by providing a control rod and a locking hole on the control rod, the rotation state of the control rod is controlled to control the movement state of the stop block; by providing a stop block and a power group, the stop block is controlled to enter and exit the locking hole to control the movement state of the control rod; by providing a soft magnetic block, a hard magnetic block and an elastic member, and by using the physical properties of the soft magnetic block and the hard magnetic block and cooperating with the elastic member, when the temperature in the pot body rises and a large amount of steam is generated, the stop block is controlled to lock the control rod to prevent the stop block from rotating and then stop the pot teeth through the stop block, thereby preventing the pot cover from rotating; and when the temperature in the pot body drops, due to the physical properties of the soft magnetic block and the hard magnetic block, the stop block is separated from the locking hole, the control rod rotates to cause the stop block to no longer stop the pot teeth, and the pot cover can be opened smoothly, while also avoiding scalding incidents caused by a large amount of steam in the pot body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0017] Figure 1 is a structural schematic diagram of an unlocked state of a pressure cooker according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of the local structure of A;

[0019] Figure 3 is a structural schematic diagram of a pressure cooker in a locked state according to an embodiment of the present invention;

[0020] Figure 4 yes Figure 3 Schematic diagram of the local structure of B.

[0021] Explanation of the reference numerals: 1-stop block; 2-pot body; 3-pot teeth; 4-control rod; 5-locking hole; 6-locking cover; 7-steam actuator; 8-stop block; 9-soft magnetic block; 10-hard magnetic block; 11-elastic part; 12-shell; 13-fixed cover; 14-sealing gasket; 15-locking part; 16-pot cover. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1 to 4 A locking device is shown, which includes a stopper block 1 arranged on a pot cover 16, and the stopper block 1 abuts against a pot tooth 3 of a pot body 2; the stopper block 1 is connected to a control rod 4, and a locking hole 5 is provided at one end of the control rod 4 away from the stopper block 1; a steam actuator 7 is provided on a lock cover 6 covering the pot body 2; the steam actuator 7 includes a stopper block 8 for controlling the motion state of the control rod 4 and a power assembly for controlling the stopper block 8 to move up and down in and out of the locking hole 5 through a change in magnetic permeability; the power assembly includes a soft magnetic block 9, a hard magnetic block 10, and an elastic member 11 connected between the soft magnetic block 9 and the hard magnetic block 10. Further, the elastic member 11 is a spring.

[0024] In this embodiment, a stop block 1 is provided to ensure that the stop block 1 can stop the pot teeth 3 when there is a large amount of steam in the pressure cooker; a control rod 4 is provided and a locking hole 5 is provided on the control rod 4, so that the movement state of the stop block 1 is controlled by controlling the rotation state of the control rod 4; a stop block 8 and a power group are provided to control the stop block 8 to enter and exit the locking hole 5 and then control the movement state of the control rod 4; a soft magnetic block 9, a hard magnetic block 10 and an elastic member 11 are provided, and the soft magnetic block 9 and the hard magnetic block 10 are physically connected to each other. The stop block 8 is controlled to lock the control rod 4 to prevent the stop block 1 from rotating when the temperature in the pot body 2 rises and a large amount of steam is generated, and then the pot teeth 3 are stopped by the stop block 1, thereby preventing the pot cover 16 from rotating; and when the temperature in the pot body 2 drops, due to the physical properties of the soft magnetic block 9 and the hard magnetic block 10, the stop block 8 is disengaged from the locking hole 5, and the control rod 4 rotates to cause the stop block 1 to no longer stop the pot teeth 3, and the pot cover 16 can be opened smoothly, while also avoiding the occurrence of scalding due to a large amount of steam in the pot body 2.

[0025] like Figure 2 As shown, in order to install the power assembly, the steam actuator 7 in this embodiment also includes a shell 12 with an opening on the top and a fixed cover 13 covering the opening; a cavity connected to the opening is provided in the shell 12; a clearance hole for the stop block 8 to pass through is provided on the fixed cover 13, and the clearance hole is connected to the cavity; the power assembly is installed in the cavity; wherein the clearance hole is concentrically arranged with the locking hole 5.

[0026] Further, in order to realize the lifting and lowering movement of the hard magnetic block 10 relative to the soft magnetic block 9, the hard magnetic block 10 and the soft magnetic block 9 in this embodiment are arranged vertically, and the hard magnetic block 10 is located above the soft magnetic block 9; a first step portion is formed on the hard magnetic block 10; a second step portion is formed on the soft magnetic block 9; one end of the elastic member 11 abuts against the first step portion, and the other end abuts against the second step portion; the hard magnetic block 10 is connected to the stop block 8. Further, the stop block 8 is formed by overmolding.

[0027] Furthermore, in order to prevent the shell 12 from being installed and fixed and to prevent steam leakage, the steam actuator 7 assembly in this embodiment also includes a sealing gasket 14 and a locking piece 15; the shell 12 is embedded in the through hole formed on the lock cover 6; the sealing gasket 14 is sealed in the gap formed between the shell 12 and the through hole of the lock cover 6, and the sealing gasket 14 is fixed to the lock cover 6 by the locking piece 15.

[0028] Furthermore, in order to achieve better heat conduction and ensure that the soft magnetic block 9 can better sense heat, the shell 12 in this embodiment is made of aluminum.

[0029] The present embodiment also provides a pressure cooker, which includes an outer shell; a pot body 2 and a locking cover 6 covering the pot body 2 are arranged in the outer shell; the outer shell includes a pot cover 16; and also includes a locking device; the stop block 1 is arranged on the pot cover 16; the steam actuator 7 is arranged on the locking cover 6; the pot body 2 is provided with pot teeth 3 on the outer surface facing the outer shell; and the locking cover 6 is provided with cover teeth that rotate with the pot teeth 3 for locking and unlocking.

[0030] In this embodiment, the pressure cooker is an electric pressure cooker, and a heating device is provided in the pot body 2 of the electric pressure cooker.

[0031] Working principle: First, when the electric pressure cooker is in an idle state, the soft magnetic block 9 and the hard magnetic block 10 are attracted together, and the spring is in a compressed state. When the electric pressure cooker is working, the water in the food absorbs heat until it boils and produces a large amount of steam during the process of heating the food. The soft magnetic block 9 absorbs the heat conducted by the steam. When the Curie temperature set by the soft magnetic is reached, the soft magnetic permeability decreases rapidly, and the attraction between the soft magnetic block 9 and the hard magnetic block 10 is greatly reduced; then, the spring pushes the hard magnetic block 10 away, and the stop block 8 passes through the locking hole 5 of the control rod 4 to prevent the control rod 4 from rotating, and then the stop block 1 stops the pot teeth 3 to prevent the pot cover 16 from rotating. Until the food is cooked, the electric pressure cooker is powered off, the food and the electric pressure cooker gradually cool down, and the temperature is lower than the Curie temperature set by the soft magnetic block. The soft magnetic block 9 and the hard magnetic block 10 in the steam actuator 7 are attracted again, and the stop block 8 is separated from the locking hole 5 of the control rod 4.

[0032] The above embodiments should be understood to be only used to illustrate the present invention and not to limit the protection scope of the present invention. After reading the contents of the present invention, technicians can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims

1. A locking device, characterized in that: It includes a stop block arranged on the pot cover, and the stop block abuts against the pot teeth of the pot body; the stop block is connected to a control rod, and a locking hole is provided at one end of the control rod away from the stop block; a steam actuator is provided on the lock cover covering the pot body; the steam actuator includes a stop block for controlling the movement state of the control rod and a power assembly for controlling the lifting and lowering of the stop block in and out of the locking hole through changes in magnetic permeability; the power assembly includes a soft magnetic block, a hard magnetic block and an elastic member connected between the soft magnetic block and the hard magnetic block; the steam actuator also includes a shell with an opening on the top and a fixed cover covering the opening; a cavity connected to the opening is provided in the shell; a There is a clearance hole for the stop block to pass through, and the clearance hole is connected to the cavity; the power component is installed in the cavity; the hard magnetic block and the soft magnetic block are arranged vertically, and the hard magnetic block is located above the soft magnetic block; a first step portion is formed on the hard magnetic block; a second step portion is formed on the soft magnetic block; one end of the elastic member abuts against the first step portion, and the other end abuts against the second step portion; the hard magnetic block is connected to the stop block; the steam actuator also includes a sealing gasket and a locking member; the shell is embedded in the through hole formed on the lock cover; the sealing gasket is sealed in the gap formed between the through hole of the shell and the lock cover, and the sealing gasket is fixed to the lock cover by the locking member.

2. The locking device according to claim 1, characterized in that: The air avoidance hole is arranged concentrically with the locking hole.

3. The locking device according to claim 1, characterized in that: The shell is made of aluminum.

4. A pressure cooker, comprising an outer shell; a cooker body and a locking cover covering the cooker body are arranged in the outer shell; the outer shell comprises a cooker cover; characterized in that: It also includes a locking device as described in any one of claims 1 to 3.

5. The pressure cooker according to claim 4, characterized in that The outer surface of the pot body facing the outer shell is provided with pot teeth; the locking cover is provided with cover teeth which are rotatably matched with the pot teeth for locking and unlocking.

6. The pressure cooker according to claim 5, characterized in that A heating device is arranged in the pot body.

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