Cooking utensil with safe door opening and closing function

Abstract

The invention provides a cooking utensil with a safe door opening and closing function. The cooking utensil aims at solving the problem that in the prior art, a door opening and closing structure of a cooking utensil with power off during door opening and power on during door closing is complex in design. A cooking utensil with a safe door opening and closing function comprises a machine body, a door opening and closing device, a door opening and closing device and a door opening and closing device, the door body assembly is hinged to the machine body and used for opening and closing the cooking cavity; the linkage mechanism comprises a swing arm rotationally arranged on the machine body, a trigger piece arranged on the swing arm and a connecting rod assembly arranged between the swing arm and the door body assembly, and the two ends of the connecting rod assembly are hinged to the door body assembly and the swing arm respectively; and the microswitch is arranged on the machine body. When the door is opened, the trigger piece is separated from the microswitch, and the microswitch is switched off for protection, so that the door is safer to open.

Description

Technical Field

[0001] The invention belongs to the technical field of kitchen cooking appliances, and in particular relates to a cooking appliance with a safe door opening and closing function. Background Art

[0002] At present, cooking appliances used in kitchens, such as air fryer microwave ovens and microwave ovens, provide great convenience for people to cook food. However, if people open the door of these cooking appliances by mistake during the cooking process, there will be safety hazards of microwave leakage or hot air burning the user. In order to prevent safety hazards caused by opening the door by mistake, the door assembly of this type of cooking appliances is currently set to be powered off when the door is opened and powered on when the door is closed, thereby preventing microwave leakage or hot air from burning the user. However, the switch door structure design of these cooking appliances in the prior art to achieve the above functions is relatively complex and needs further improvement. Summary of the invention

[0003] The invention provides a cooking appliance with a safe door opening and closing function, aiming to solve the problem of a relatively complex door opening and closing structure design of the cooking appliance in the prior art for powering off when the door is opened and powering on when the door is closed.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A cooking appliance with a safe door opening and closing function, comprising:

[0006] A machine body, wherein a cooking cavity is provided in the machine body;

[0007] A door assembly, hinged to the machine body and used for opening and closing the cooking cavity;

[0008] A linkage mechanism, the linkage mechanism comprising a swing arm rotatably arranged on the machine body, a trigger member arranged on the swing arm, and a connecting rod assembly arranged between the swing arm and the door body assembly, wherein two ends of the connecting rod assembly are respectively hinged to the door body assembly and the swing arm; and,

[0009] A micro switch, arranged on the machine body;

[0010] When the door body assembly is closed, the door body assembly drives the swing arm to swing toward the micro switch through the connecting rod assembly, and causes the trigger member to trigger the micro switch; when the door body assembly is opened, the door body assembly drives the swing arm to swing away from the micro switch through the connecting rod assembly, and causes the trigger member to disconnect from the micro switch.

[0011] A further solution: the door body assembly includes a left door hinged to the left side of the body and a right door hinged to the right side of the body, the connecting rod assembly includes a left connecting rod and a right connecting rod, the swing arm is provided with a left hinge end and a right hinge end, the two ends of the left connecting rod are respectively hinged to the left door and the left hinge end, and the two ends of the right connecting rod are respectively hinged to the right door and the right hinge end.

[0012] Based on the above technical solution: through the above setting, the left door and the right door need to be opened or closed synchronously, ensuring that the left door and the right door are closed at the same time when closing, further reducing safety hazards.

[0013] A further solution is that an elastic member is provided between the linkage mechanism and the machine body, and when the door assembly is closed, the elastic member causes the trigger member to remain at a position to trigger the micro switch under elastic action.

[0014] Based on the above technical solution: by setting an elastic member, when closing the door body assembly, the elastic member can provide a certain power for closing the door, and after closing the door, the elastic member keeps the trigger member in the position of triggering the micro switch, so that the micro switch is in a triggered state more stably.

[0015] A further solution: the elastic member is a tension spring, and the tension spring is located between the right connecting rod and the machine body.

[0016] A further solution: the door body assembly is arranged on the front side of the body, the swing arm and the micro switch are both arranged on the upper side and to the right of the bottom wall of the body, and the swing arm is located on the front side of the micro switch.

[0017] Based on the above technical solution: the above setting makes installation more convenient, and at the same time can prevent users from accidentally touching the micro switch when the door is open, making the product safer to use.

[0018] A further solution: a fixed bracket is provided on the upper side of the bottom wall of the machine body, the swing arm is hinged on the fixed bracket and is located on the upper side of the fixed bracket; an arc-shaped hole is provided on the fixed bracket, and a protrusion sliding along the arc-shaped hole is provided on the swing arm; a first abutment end and a second abutment end are provided in the arc-shaped hole; when the door body assembly is closed, the protrusion abuts against the first abutment end; when the door body assembly is opened, the protrusion abuts against the second abutment end.

[0019] Based on the above technical solution: by setting it so that when the swing arm swings back and forth, the protrusion slides back and forth along the arc hole, thereby playing a certain limiting and guiding role, making the linkage mechanism more stable, and also preventing the left door and the right door from rotating beyond the limit when opening the door.

[0020] A further solution: the trigger member is arranged on the upper side of the swing arm, and the trigger member includes a connecting piece fixedly connected to the swing arm and a switch pressing piece for triggering the micro switch, and the connecting piece and the switch pressing piece are integrally formed.

[0021] A further solution: a micro switch fixing frame extending backward is provided on the fixing bracket, the micro switch is fixed on the micro switch fixing frame, and a gasket is provided between the micro switch and the micro switch fixing frame.

[0022] Based on the above technical solution: the above setting makes installation more convenient and has lower cost.

[0023] A further solution: The left hinged end, the right hinged end, the left door and the right door are all provided with hinged seats, the two ends of the left connecting rod are respectively hinged to the left hinged end and the hinged seat of the left door, and the two ends of the right connecting rod are respectively hinged to the right hinged end and the hinged seat of the right door.

[0024] A further solution: the front side of the machine body is provided with two clearance holes for the left connecting rod and the right connecting rod to pass through respectively.

[0025] Based on the above technical solution: the above setting is not only convenient for installation, but also makes the cost lower and the product safer to use.

[0026] The beneficial effects of the present invention are:

[0027] The present invention arranges a linkage mechanism including a connecting rod assembly, a swing arm and a trigger member arranged on the swing arm on the body, and the two ends of the connecting rod assembly are respectively hinged to the door body assembly and the swing arm, so that in the process of opening and closing the door, the door body assembly can drive the swing arm to swing toward or away from the micro switch through the connecting rod assembly, and then the swing arm drives the trigger member to trigger the micro switch to energize it when closing the door, and the trigger member is separated from the micro switch when opening the door, and the micro switch is disconnected for protection, making it safer to open the door. When it is applied to a microwave oven, it can prevent microwave leakage, and when it is applied to an air fryer, it can prevent hot air from burning the user, making the product safer to use. In addition, the structure of the present invention is simpler and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1It is a schematic structural diagram of the door assembly of the present invention when it is closed.

[0030] Figure 2 It is a schematic structural diagram of the door assembly of the present invention when it is opened.

[0031] Figure 3 It is a schematic diagram of the explosion structure of the bottom wall and the body.

[0032] Figure 4 It is a schematic diagram of the structure of the bump and the arc hole.

[0033] Figure 5 It is a schematic diagram of the structure in which the trigger member is fixed on the swing arm.

[0034] Description of the numbers in the figure:

[0035] 1-machine body; 11-gap hole; 12-fixing bracket; 121-arc hole; 13-micro switch fixing bracket; 14-micro switch; 15-gasket; 16-swing arm; 161-left hinge end; 162-right hinge end; 163-bump; 17-trigger; 18-left connecting rod; 19-right connecting rod; 2-left door; 3-right door; 4-tension spring. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0037] like Figures 1 to 3 As shown, this embodiment provides a cooking appliance with a safe door opening and closing function, comprising:

[0038] A machine body 1, wherein a cooking cavity is provided in the machine body 1;

[0039] A door assembly, hinged to the machine body 1 and used for opening and closing the cooking cavity;

[0040] A linkage mechanism, the linkage mechanism comprising a swing arm 16 rotatably arranged on the machine body 1, a trigger member 17 arranged on the swing arm 16, and a connecting rod assembly arranged between the swing arm 16 and the door body assembly, wherein both ends of the connecting rod assembly are respectively hinged to the door body assembly and the swing arm 16; and,

[0041] A micro switch 14 is provided on the machine body 1;

[0042] When the door body assembly is closed, the door body assembly drives the swing arm 16 to swing toward the micro switch 14 through the connecting rod assembly, and causes the trigger member 17 to trigger the micro switch 14; when the door body assembly is opened, the door body assembly drives the swing arm 16 to swing away from the micro switch 14 through the connecting rod assembly, and causes the trigger member 17 to disconnect from the micro switch 14.

[0043] In this embodiment, Figure 1 and Figure 2 As shown, the door body assembly is a double-door structure. Specifically, the door body assembly includes a left door 2 hinged on the left side of the body 1 and a right door 3 hinged on the right side of the body 1. The connecting rod assembly includes a left connecting rod 18 and a right connecting rod 19. The swing arm 16 is provided with a left hinge end 161 and a right hinge end 162. The two ends of the left connecting rod 18 are respectively hinged to the left door 2 and the left hinge end 161, and the two ends of the right connecting rod 19 are respectively hinged to the right door 3 and the right hinge end 162. When opening and closing the doors, the left door 2 and the right door 3 will be opened or closed synchronously, which is safer. The left hinge end 161, the right hinge end 162, the left door 2 and the right door 3 are all provided with hinge seats, the two ends of the left connecting rod 18 are respectively hinged to the left hinge end 161 and the hinge seat of the left door 2, and the two ends of the right connecting rod 19 are respectively hinged to the right hinge end 162 and the hinge seat of the right door 3. Specifically, rivets or the like can be used for hinge connection.

[0044] In this embodiment, the door assembly is specifically arranged at the front side of the machine body 1, the swing arm 16 and the micro switch 14 are both arranged on the upper side of the bottom wall of the machine body 1 and arranged close to the right, and the swing arm 16 is located at the front side of the micro switch 14. The hinge seat on the left door 2 is located at the lower side of the left door 2, and the hinge seat on the right door 3 is located at the lower side of the right door 3. Two clearance holes 11 are provided at the bottom of the front side of the machine body 1 for the left connecting rod 18 and the right connecting rod 19 to pass through respectively. In the process of opening and closing the door, the left connecting rod 18 and the right connecting rod 19 slide through the corresponding clearance holes 11 respectively.

[0045] In this embodiment, Figure 1 and Figure 2As shown, in order to facilitate door closing, an elastic member is provided between the linkage mechanism and the machine body 1. When the door assembly is closed, the elastic member keeps the trigger member 17 at the position of triggering the micro switch 14 under the elastic action. Specifically, when the door is opened, the elastic member is stretched, and when the door is closed, the elastic member is reset to provide a certain power to facilitate door closing. The elastic member is preferably a tension spring 4, and the tension spring 4 is located between the right connecting rod 19 and the machine body 1. Specifically, hanging holes are provided on the machine body 1 and the right connecting rod 19, and the hooks at both ends of the tension spring 4 are hung in the two hanging holes respectively.

[0046] In this embodiment, Figures 1 to 4 As shown, in order to conveniently fix the swing arm 16 and the micro switch 14, a fixing bracket 12 is provided on the upper side of the bottom wall of the body 1, and the fixing bracket 12 can be fixed to the body 1 by rivets or the like. The swing arm 16 is hinged on the fixing bracket 12 and is located on the upper side of the fixing bracket 12; the fixing bracket 12 is provided with an arc hole 121, and the swing arm 16 is provided with a protrusion 163 that slides along the arc hole 121. When the swing arm 16 swings back and forth, the protrusion 163 slides back and forth along the arc hole 121, thereby playing a certain role in limiting and guiding. Specifically, a first abutment end and a second abutment end are provided in the arc-shaped hole 121; when the door body assembly is closed, the protrusion 163 abuts against the first abutment end; when the door body assembly is opened, the protrusion 163 abuts against the second abutment end. When opening the door, when the protrusion 163 abuts against the second abutment end of the arc-shaped hole 121, the opening angles of the left door 2 and the right door 3 are the largest.

[0047] like Figure 5 As shown, the trigger member 17 is arranged on the upper side of the swing arm 16, and the trigger member 17 includes a connecting piece fixedly connected to the swing arm 16 and a switch pressing piece for triggering the micro switch 14, and the connecting piece and the switch pressing piece are integrally formed. The connecting piece is fixed to the swing arm 16 by rivets, and swings synchronously with the swing arm 16. When the door is closed, the switch pressing piece abuts against the micro switch 14 to keep it in the triggered state.

[0048] The fixing bracket 12 is provided with a micro switch fixing bracket 13 extending backward, the micro switch 14 is fixedly provided on the micro switch fixing bracket 13, and a gasket 15 is provided between the micro switch 14 and the micro switch fixing bracket 13. Specifically, the micro switch fixing bracket 13 is fixed to the lower side of the fixing bracket 12 by rivets, and the micro switch 14 is fixed to the micro switch fixing bracket 13 by screws.

[0049] In this embodiment, the cooking appliance can be an air frying microwave oven, a microwave oven, an oven, etc. When the door is opened, the micro switch 14 is in a non-triggered state, the microwave heating function is turned off or the air frying burner is turned off, so that the product is safer to use.

[0050] Working principle description:

[0051] When the door assembly is closed, the door assembly drives the swing arm 16 to swing toward the micro switch 14 through the connecting rod assembly, so that the trigger 17 on the swing arm 16 triggers the micro switch 14. When the door assembly is opened, the door assembly drives the swing arm 16 to swing away from the micro switch 14 through the connecting rod assembly, so that the trigger 17 on the swing arm 16 is disengaged from the micro switch 14, and the relevant components in the body 1 are powered off, making it safer to open the door.

[0052] The present invention is not limited to the above optional implementation modes. Under the premise of not conflicting with each other, the various schemes can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shapes or structures, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A cooking appliance with a safe door opening and closing function, characterized in that: include: A machine body, wherein a cooking cavity is provided in the machine body; A door assembly, hinged to the machine body and used for opening and closing the cooking cavity; A linkage mechanism, the linkage mechanism comprising a swing arm rotatably arranged on the machine body, a trigger member arranged on the swing arm, and a connecting rod assembly arranged between the swing arm and the door body assembly, wherein two ends of the connecting rod assembly are respectively hinged to the door body assembly and the swing arm; and, A micro switch, arranged on the machine body; When the door body assembly is closed, the door body assembly drives the swing arm to swing toward the micro switch through the connecting rod assembly, and causes the trigger member to trigger the micro switch; when the door body assembly is opened, the door body assembly drives the swing arm to swing away from the micro switch through the connecting rod assembly, and causes the trigger member to disconnect from the micro switch.

2. The cooking appliance with a safe door opening and closing function according to claim 1, characterized in that: The door body assembly includes a left door hinged to the left side of the body and a right door hinged to the right side of the body, the connecting rod assembly includes a left connecting rod and a right connecting rod, the swing arm is provided with a left hinge end and a right hinge end, the two ends of the left connecting rod are respectively hinged to the left door and the left hinge end, and the two ends of the right connecting rod are respectively hinged to the right door and the right hinge end.

3. The cooking appliance with a safe door opening and closing function according to claim 2, characterized in that: An elastic member is provided between the linkage mechanism and the machine body. When the door assembly is closed, the elastic member keeps the trigger member at a position to trigger the micro switch under elastic action.

4. The cooking appliance with a safe door opening and closing function according to claim 3, characterized in that: The elastic member is a tension spring, and the tension spring is located between the right connecting rod and the machine body.

5. The cooking appliance with a safe door opening and closing function according to claim 2, characterized in that: The door assembly is arranged on the front side of the machine body, the swing arm and the micro switch are both arranged on the upper side and to the right of the bottom wall of the machine body, and the swing arm is located on the front side of the micro switch.

6. The cooking appliance with a safe door opening and closing function according to claim 5, characterized in that: A fixed bracket is provided on the upper side of the bottom wall of the machine body, and the swing arm is hinged on the fixed bracket and is located on the upper side of the fixed bracket; an arc-shaped hole is provided on the fixed bracket, and a protrusion sliding along the arc-shaped hole is provided on the swing arm; a first abutment end and a second abutment end are provided in the arc-shaped hole; when the door body assembly is closed, the protrusion abuts against the first abutment end; when the door body assembly is opened, the protrusion abuts against the second abutment end.

7. The cooking appliance with a safe door opening and closing function according to claim 6, characterized in that: The trigger member is arranged on the upper side of the swing arm, and the trigger member includes a connecting piece fixedly connected to the swing arm and a switch pressing piece for triggering the micro switch, and the connecting piece and the switch pressing piece are integrally formed.

8. The cooking appliance with a safe door opening and closing function according to claim 6, characterized in that: The fixing bracket is provided with a micro switch fixing frame extending backwards, the micro switch is fixed on the micro switch fixing frame, and a gasket is provided between the micro switch and the micro switch fixing frame.

9. The cooking appliance with a safe door opening and closing function according to claim 2, characterized in that: The left hinged end, the right hinged end, the left door and the right door are all provided with hinged seats, the two ends of the left connecting rod are respectively hinged to the left hinged end and the hinged seat of the left door, and the two ends of the right connecting rod are respectively hinged to the right hinged end and the hinged seat of the right door.

10. The cooking appliance with a safe door opening and closing function according to claim 2, characterized in that: The front side of the machine body is provided with two clearance holes for the left connecting rod and the right connecting rod to pass through respectively.

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