Door lock structure and cooking equipment

Abstract

The utility model provides a door lock structure and cooking equipment, which comprises a switch assembly and a door assembly, the door assembly and the switch assembly are controllably connected or disconnected, a door hook assembly is arranged on the door assembly, and the switch assembly at least comprises a switch bracket, a microswitch, an electromagnetic valve assembly and a mechanical rotation locking structure. The mechanical rotation locking structure and the electromagnetic valve assembly can selectively lock the door hook assembly. Compared with the scheme that the door assembly can be opened only through one-step downward pulling in the prior art, the electromagnetic valve assembly is additionally arranged in the switch assembly, an electromagnetic valve telescopic rod of the electromagnetic valve stretches into a door hook groove position of a door hook of the door assembly to lock the door hook, so that the door assembly is locked, the door handle cannot be pulled open when the door handle is pulled outwards, and the step that the electromagnetic valve is firstly operated for opening is needed. The whole structure is simple and reasonable in assembly, only the electromagnetic valve is added on the original basis, the cost is low, children or personnel who cannot use the equipment can be prevented from being scalded during operation, the safety of operators is improved, and the safety performance is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen electrical appliances technical field, specifically, relate to a door lock structure and cooking equipment. BACKGROUND

[0002] In the existing cooking electrical appliances, for example, microwave oven, oven, steamer and the like, the door assembly is generally set as a pull-down type, and the ordinary pull-down door pulls the door handle outward and downward, the door hook slot hole of the door assembly is separated from the rotating part lock catch arm of the right switch bracket assembly rotating part, so that the door assembly is opened, and food samples are taken out or put in the cooking cavity.

[0003] The patent with the publication number CN111023181B discloses a cooking electrical appliance and a door body thereof, and the door body of the cooking electrical appliance includes a door frame, a door framework for preventing microwave leakage, a door hook assembly, and a limiting piece. The limiting piece is arranged on the door frame or the door hook assembly. During the opening process, when the door frame is opened to a preset position, the limiting piece and the door framework are in mutual resistance and drive the door framework to be opened synchronously. During the opening operation, since the door frame and the door framework are movably connected, the door frame is slightly opened, the door framework is not opened at the same time, and the door framework is still blocked at the opening part of the box body to prevent microwave leakage. The existing technology drives the door hook assembly to move correspondingly when the door frame is slightly opened, the door hook assembly is separated from the micro switch to disconnect the microwave circuit, after the microwave circuit is disconnected, the limiting piece and the door framework are in mutual resistance and drive the door framework to be opened synchronously during the continuous opening process of the door frame, so that the leakage of microwave is prevented at the moment of opening the door. However, the pull-down switch structure of the existing technology only has one-time limitation, and only one step is needed to open the door, that is, the door handle can be pulled outward to open the door. For the electrical appliance being used, the temperature in the cooking cavity is relatively high at this time, and if a child pulls down the door assembly, the cooking cavity can be opened, which has a potential risk of scalding. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a door lock structure and cooking equipment to solve the problems of simple switch structure of the door assembly, easy to be opened by mistake, and potential risk of scalding in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A door lock structure, comprising a switch assembly and a door assembly, the door assembly is controllably connected or disconnected with the switch assembly, a door hook assembly is arranged on the door assembly, the switch assembly at least comprises a switch bracket, a micro switch, an electromagnetic valve assembly and a mechanical rotary locking structure, the mechanical rotary locking structure and the electromagnetic valve assembly can selectively lock the door hook assembly.

[0007] Further, the switch assembly is arranged as two, respectively located at the left and right sides of the furnace body, and the electromagnetic valve assembly is arranged on at least one switch assembly.

[0008] Further, the switch assembly is arranged as two, and the electromagnetic valve assembly and the mechanical rotary locking structure are arranged on one switch assembly respectively.

[0009] Further, the electromagnetic valve assembly comprises an electromagnetic valve, a telescopic rod and a bracket, the electromagnetic valve is fixed through the bracket, a telescopic rod extending upward is arranged on the top of the electromagnetic valve, and the electromagnetic valve controls the extension and retraction of the telescopic rod to realize locking or unlocking with the door hook assembly.

[0010] Further, the mechanical rotary locking structure comprises a rotating part and a locking arm, the fixed end of the locking arm is connected on the rotating part, and the free end of the locking arm is selectively locked or unlocked with the door hook assembly.

[0011] Further, a supporting rod, a first elastic member and a first switch bracket are arranged on the upper part of the bracket, and the first switch bracket at least partially wraps the supporting rod, the first elastic member and the electromagnetic valve assembly.

[0012] Further, the supporting rod and the first elastic member are arranged inside the first switch bracket, the first elastic member is fixedly connected with the supporting rod, a supporting rod stopper is arranged on the end of the supporting rod close to the door hook assembly, one end of the supporting rod is connected on the supporting rod stopper and extends to the end away from the door hook assembly, the first elastic member is sleeved on the supporting rod, and the end of the supporting rod away from the door hook assembly extends outward and protrudes out of the first switch bracket.

[0013] Further, a guide hook is further arranged on the supporting rod stopper, and a guide groove is further arranged on the side of the first switch bracket, and the guide groove cooperates with the guide hook to limit the moving direction of the supporting rod stopper.

[0014] Further, the switch assembly comprises a first switch assembly and a second switch assembly, the electromagnetic valve assembly is arranged on the first switch assembly, the mechanical rotary locking structure is arranged on the second switch assembly, and a micro switch is arranged on the first switch assembly and the second switch assembly.

[0015] Compared with the prior art, the door lock structure has the following advantages:

[0016] Compared with the scheme that only one step of pull-down operation is needed to open the door assembly in the prior art, the electromagnetic valve assembly is additionally arranged in the switch assembly, the electromagnetic valve locks the door hook by extending the electromagnetic valve telescopic rod into the door hook slot of the door hook of the door assembly, so that the door assembly is locked, and the door handle cannot be pulled out, and the door assembly must be opened through the first operation of the electromagnetic valve. The overall structure is simple and reasonable, only the electromagnetic valve is additionally arranged on the basis of the original structure, the cost is low, the scald caused by the operation of children or people who cannot use the equipment is prevented, the safety of the operator is improved, and the safety performance is high.

[0017] The utility model also provides a kind of cooking equipment, including the door lock structure described above, and the door lock structure is used to control the locking and unlocking of door assembly and furnace body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The cooking equipment structure schematic view described in the embodiments of the utility model is shown in the drawings.

[0019] Figure 1a The Figure 1 The local enlarged view of site A in Fig.

[0020] Figure 1b The Figure 1 The local enlarged view of site B in Fig.

[0021] Figure 2 The first switch assembly closed door state schematic view described in the embodiments of the utility model is shown in the drawings.

[0022] Figure 3 The first switch assembly open door state schematic view described in the embodiments of the utility model is shown in the drawings.

[0023] Figure 4 The second switch assembly closed door state schematic view described in the embodiments of the utility model is shown in the drawings.

[0024] Figure 5 The second switch assembly open door state schematic view described in the embodiments of the utility model is shown in the drawings.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1-first switch assembly, 11-first micro switch, 12-first switch bracket, 13-stay bar, 131-stay bar stop block, 14-electromagnetic valve, 141-telescopic rod, 15-bracket, 16-guide hook, 17-guide slot, 18-first elastic member, 2-second switch assembly, 21-second micro switch, 22-second switch bracket, 23-rotation part, 24-pushing surface, 25-locking arm, 26-second elastic member, 3-door assembly, 31-door hook assembly, 32-door hook slot hole, 33-door hook stop surface, 34-door hook pushing surface DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below in combination with the drawings. In addition, the directions or position relationships referred to in the embodiments, such as 'front', 'back', 'upper', 'lower', 'left', 'right', 'top end' and 'bottom end', refer to the directions or position relationships shown in the drawings, and the term 'on' refers to the direct support or indirect support by the element.

[0028] It should be noted that in the description of the present application, the terms'mounting', 'connection' and 'connection' should be understood broadly unless otherwise specified and limited, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] As shown in Figures 1-5 The door lock structure comprises a switch assembly and a door assembly 3, and the door assembly 3 is controllably connected or disconnected with the switch assembly. A door hook assembly 31 is arranged on the door assembly 3. The switch assembly comprises at least a switch bracket, a micro switch, a solenoid valve assembly and a mechanical rotary locking structure. The mechanical rotary locking structure and the solenoid valve assembly can selectively lock the door hook assembly 31. When it is needed to open the door assembly, the solenoid valve assembly needs to be removed first, and then the door assembly is pulled down to rotate the mechanical rotary locking structure, so that the mechanical rotary locking structure is separated from the door hook assembly 31, and the door assembly can be opened. Compared with the prior art which only needs one-step down operation to open the door assembly, the solenoid valve assembly is added in the switch assembly, the assembly structure is simple, and it can prevent children or people who do not know how to use the device from operating, which can prevent scalding and increase the safety of the operator.

[0030] The switch assembly is arranged at a position close to at least one end of the front side of the furnace body. Preferably, the switch assembly is arranged in two parts, respectively on the left and right sides of the furnace body, and the two switch assemblies can be arranged in different structures. The solenoid valve assembly is arranged on at least one switch assembly. When the solenoid valve assembly is arranged on one switch assembly, two-step opening of the door assembly can be realized. When the solenoid valve assembly is arranged on two switch assemblies, the door assembly can be opened by pressing the solenoid valve assemblies on both sides and then pulling down the door assembly. Preferably, the solenoid valve assembly is arranged on one switch assembly, which can ensure safety while making the overall door lock structure simple in structure.

[0031] Specifically, the switch assembly includes a first switch assembly 1 and a second switch assembly 2, wherein the first switch assembly 1 is arranged at a position close to the left side on the front side of the furnace body, and the second switch assembly 2 is arranged at a position close to the right side on the front side of the furnace body. Correspondingly, the door hook assembly 31 is also arranged in two, corresponding to the first switch assembly 1 and the second switch assembly 2 respectively.

[0032] Among them, the first switch assembly 1 is provided with a solenoid valve assembly and a first micro switch 11. When the door assembly is closed, the solenoid valve assembly locks the door hook assembly 31 corresponding to the first switch assembly 1. When the door assembly needs to be opened, the solenoid valve assembly needs to be unlocked from the door hook assembly 31 before pulling the door assembly. The second switch assembly 2 is provided with a second micro switch 21 and a mechanical rotary locking structure. The mechanical rotary locking structure locks the door hook assembly 31 corresponding to the second switch assembly. When the door assembly is pulled, the mechanical rotary locking structure is rotated away from the door hook assembly 31, realizing the unlocking of the second switch assembly 2 and the door hook assembly 31.

[0033] Further, the solenoid valve assembly includes a solenoid valve 14, a telescopic rod 141 and a bracket 15, wherein the solenoid valve 14 is fixed by the bracket 15, and the telescopic rod 141 protruding upward is arranged on the top of the solenoid valve 14, and the solenoid valve 14 can control the extension and retraction of the telescopic rod 141. When the telescopic rod 141 extends outward, the telescopic rod 141 locks the door hook assembly 31; when the telescopic rod 141 retracts downward, the telescopic rod 141 is separated from the door hook assembly 31.

[0034] Among them, the mechanical rotary locking structure includes a rotating part 23, a locking arm 25 and a second elastic member 26, wherein the locking arm 25 can be arranged as a protruding structure, for example, can be arranged as a hook structure. The fixed end of the locking arm 25 is connected to the rotating part 23, and the free end of the locking arm 25 is selectively locked or unlocked with the door hook assembly 31. The rotating part 23 is also connected with the second elastic assembly 26. When the door assembly is in the closed state, the locking arm 25 is inserted into or hooked on the door hook assembly 31, realizing the locking of the switch assembly and the door assembly. When the door assembly is pulled downward or outward, the pressure of the force acting on the second elastic member 26 becomes smaller, the second elastic member 26 returns to the deformation and drives the rotating part 23 to rotate, the rotating part 23 drives the locking arm 25 to rotate away from the door hook assembly 31, realizing the unlocking of the switch assembly and the door assembly.

[0035] Further, the rotating part 23 is also provided with a pushing surface 24, the locking arm 25 is connected to the pushing surface 24, and a gap is formed between the free end of the locking arm 25 and the pushing surface 24, which ensures the smooth locking of the locking arm 25 and the door hook assembly 31, and avoids the interference between the door hook assembly 31 and the rotating part 23.

[0036] In the embodiment, the second switch assembly 2 is further provided with a second micro switch 21 and a second switch bracket 22, wherein the second switch bracket 22 serves as a support fixing structure for the second micro switch 21 and the mechanical rotary locking structure as the main body of the second switch assembly 2. The second micro switch 21 is arranged at the upper part of the mechanical rotary locking structure, so as to facilitate the second micro switch 21 to quickly and accurately perceive the movement of the door assembly and timely cut off the power supply to avoid microwave leakage. The second elastic member 26 is arranged at the front side of the second micro switch 21, one end of the second elastic member 26 is fixedly connected with the second switch bracket 22, and the other end of the second elastic member 26 is fixedly connected with the rotary part 23. Preferably, the second elastic member 26 is a torsion spring.

[0037] In the embodiment, the first switch assembly 11 further includes a first micro switch 11, a first switch bracket 12, a support rod 13 and a first elastic member 18. The support rod 13 and the first elastic member 18 are arranged at the upper part of the bracket 15, and the first switch bracket 12 at least partially wraps the support rod 13, the first elastic member 18 and the electromagnetic valve assembly, so as to avoid food residues from contaminating the inside of the electromagnetic valve and ensure the long-term stable and effective operation of the electromagnetic valve. The support rod 13 and the first elastic member 18 are arranged inside the first switch bracket 12, the first elastic member 18 is fixedly connected with the support rod 13, the support rod 13 is provided with a support rod stopper 131 at the end close to the door hook assembly 31, one end of the support rod 13 is connected to the support rod stopper 131 and extends away from the door hook assembly 31, the first elastic member 18 is sleeved on the support rod 13, and the end of the support rod 13 away from the door hook assembly 31 protrudes outward from the first switch bracket 12. The first elastic member 18 can push the support rod stopper 131 to drive the support rod 13 to move back and forth inside the first switch bracket 12. Preferably, the first elastic member 18 is a spring.

[0038] Further, the first micro switch 11 is arranged at a position close to the inner side of the first switch bracket 12, i.e. at the right side of the first switch bracket 12.

[0039] Further, the support rod stopper 131 is further provided with a guide hook 16, and a guide groove 17 is correspondingly arranged at the side surface of the first switch bracket 12. The guide groove 17 cooperates with the guide hook 16 to limit the movement direction of the support rod stopper 131 when the support rod stopper 131 drives the support rod 13 to move forward, so as to ensure the smooth operation of the door assembly switch and avoid jamming and the support rod stopper 131 from being pulled out of the first switch bracket 12.

[0040] In the embodiment, the door hook assembly 31 is arranged to protrude towards the furnace body, and the door hook slot 32 is arranged on the door hook assembly 31, when the door assembly is in the closed state, the telescopic rod 141 of the electromagnetic valve assembly and the locking arm 25 of the mechanical rotary locking structure are all inserted into the door hook slot 32, thereby achieving the locking of the door assembly.

[0041] Further, the door hook blocking surface 33 and the door hook pushing surface 34 are arranged on the inner and outer sides of the door hook slot 32 respectively, the door hook blocking surface 33 is the inner wall of the door hook slot 32, and the door hook pushing surface 34 is arranged on the outside of the door hook slot 32 and at the last end of the door hook assembly 31. When the door assembly is closed, the door hook pushing surface 34 pushes the support rod blocking block 131 to move backward.

[0042] As one of the embodiments of the utility model, the first switch assembly 1 and the second switch assembly 2 can also be interchanged in position, as long as the function of the utility model can be achieved. In addition, microswitches are arranged on the first switch assembly and the second switch assembly 2, which can fully avoid the microwave leakage when the microwave oven door assembly is opened.

[0043] During the opening of the door assembly, the action process of the door lock structure is as follows:

[0044] When the door assembly is opened, the electromagnetic valve is first controlled, the electromagnetic valve makes the telescopic rod 141 retract downward, the telescopic rod 141 is separated from the corresponding door hook slot 32, and at the same time, the spring pushes the support rod blocking block 131 to drive the support rod 13 to move forward due to the restoring force, the support rod blocking block 131 is located at the top of the telescopic rod 141 and presses the telescopic rod 141, thereby releasing the restriction and locking of the corresponding door hook assembly 31, and then the door assembly is pulled downward and outward. Due to the pulling force on the door assembly, the door hook assembly moves forward, drives the locking arm 25 of the switch assembly on the other side to rotate, and then drives the locking arm 25 to rotate counterclockwise to a set angle and is separated from the corresponding door hook slot 32, at this time, the two ends of the door assembly are unlocked, the door assembly can be opened, and at this time, the rotating part 23 rotates to drive the torsional spring to deform and store energy. Therefore, the door can be opened through two-step operation, which can effectively prevent children from opening the door by mistake.

[0045] When the door assembly needs to be closed, the door hook assembly 31 is in contact with the pushing surface 24 due to the backward pushing force, then the rotating part 23 is rotated clockwise, at this time, the torsional spring returns to the deformation to drive the rotating part to rotate rapidly, so that the locking arm 25 is quickly connected into the door hook slot 32. At the same time, in the rotating process of the rotating part 23, the door hook assembly 31 on the other side pushes the support rod blocking block 131 to drive the support rod 13 to move backward, the spring is compressed, then the support rod blocking block 131 moves to the back side of the top of the telescopic rod 141, the telescopic rod 141 is extended outward to pass through the door hook slot 32, thereby achieving the locking of the door assembly.

[0046] Thus, the electromagnetic valve support is added on the first switch assembly, the electromagnetic valve locks the door hook in the door hook slot of the door hook of the door assembly by extending the electromagnetic valve telescopic rod into the door hook slot, so that the door assembly is locked, the door handle cannot be pulled out, and the door handle must be opened by the opening step of operating the electromagnetic valve first.

[0047] As an embodiment of the utility model, a cooking device is also provided, which comprises the door lock structure described above and is used for controlling the locking and unlocking of the door assembly and the furnace body. The cooking device can be a microwave oven, an electric oven, an electric steamer or other cooking devices.

[0048] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be the range defined by the claims.

Claims

1. A door lock structure, characterized in that, It includes a switch assembly and a door assembly (3), the door assembly (3) being controllably connected or disconnected from the switch assembly, and a door hook assembly (31) being provided on the door assembly (3). The switch assembly includes at least a switch bracket, a micro switch, a solenoid valve assembly, and a mechanical rotary locking structure, both of which can selectively lock the door hook assembly (31).

2. The door lock structure according to claim 1, characterized in that, The switch assembly is configured as two, located on the left and right sides of the furnace body respectively, and the solenoid valve assembly is installed on at least one switch assembly.

3. The door lock structure according to claim 1, characterized in that, The switching assembly is configured as two, with the solenoid valve assembly and the mechanical rotary locking structure each mounted on one switching assembly.

4. The door lock structure according to claim 1, characterized in that, The solenoid valve assembly includes a solenoid valve (14), a telescopic rod (141), and a bracket (15). The solenoid valve (14) is fixed by the bracket (15). A telescopic rod (141) extending upward is provided on the top of the solenoid valve (14). The solenoid valve (14) controls the extension and retraction of the telescopic rod (141) to lock or unlock the corresponding door hook assembly (31).

5. The door lock structure according to claim 1, characterized in that, The mechanical rotation locking structure includes a rotating part (23) and a latch arm (25). The fixed end of the latch arm (25) is connected to the rotating part (23), and the free end of the latch arm (25) can be selectively locked or unlocked with the door hook assembly (31).

6. The door lock structure according to claim 4, characterized in that, A support rod (13), a first elastic element (18), and a first switch bracket (12) are provided on the upper part of the bracket (15). The first switch bracket (12) at least partially covers the support rod (13), the first elastic element (18), and the solenoid valve assembly.

7. The door lock structure according to claim 6, characterized in that, The support rod (13) and the first elastic element (18) are disposed inside the first switch bracket (12). The first elastic element (18) is fixedly connected to the support rod (13). A support rod stop (131) is provided at one end of the support rod (13) near the door hook assembly (31). One end of the support rod (13) is connected to the support rod stop (131) and extends away from the door hook assembly (31). The first elastic element (18) is fitted on the support rod (13), and the end of the support rod (13) away from the door hook assembly (31) extends outward and protrudes from the first switch bracket (12).

8. The door lock structure according to claim 7, characterized in that, A guide hook (16) is also provided on the strut stop (131), and a guide groove (17) is also provided on the side of the first switch bracket (12). The guide groove (17) and the guide hook (16) cooperate to limit the movement direction of the strut stop (131).

9. The door lock structure according to claim 1, characterized in that, The switching assembly includes a first switching assembly (1) and a second switching assembly (2). The solenoid valve assembly is disposed on the first switching assembly (1), and the mechanical rotation locking structure is disposed on the second switching assembly (2). Microswitches are disposed on both the first switching assembly (1) and the second switching assembly (2).

10. A cooking device, characterized in that, Includes the door lock structure according to any one of claims 1 to 9, the door lock structure being used to control the locking and unlocking of the door assembly and the furnace body.

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