Door opening structure of cooking equipment and cooking equipment

Abstract

The utility model provides a door opening structure of cooking equipment and the cooking equipment, the door opening structure comprises a door hook, a door hook limiting arm, a transmission arm assembly and a locking valve, the door hook can move relative to the door hook limiting arm and is clamped with or separated from the door hook limiting arm, and the transmission arm assembly is respectively abutted against the door hook and a door opening key of the cooking equipment; the door opening structure has a door opening working condition and a locking working condition, when the door opening structure is in the door opening working condition, the transmission arm assembly can drive the door hook to move under the action of external force, so that the door hook is separated from the door hook limiting arm, and when the door opening structure is in the locking working condition, the locking valve abuts against the transmission arm assembly to prevent the transmission arm assembly from moving; according to the key type door opening structure, it can be guaranteed that the door body of the cooking equipment is firmly locked in the door closing state, the door body is effectively prevented from being accidentally opened, the safety of the key type door opening structure is improved, the whole door opening structure is simple in structure and convenient and fast to operate, and the use convenience of a user is also considered while the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of cooking equipment technology, and in particular to a door opening structure and cooking equipment. Background Technology

[0002] In the field of modern kitchen appliances, cooking equipment such as microwave ovens and steam ovens are widely used in homes and restaurants. As consumers' demands for the safety and convenience of cooking equipment continue to rise, the door design of cooking equipment is gradually becoming a key focus for manufacturers.

[0003] However, the door opening structure of existing cooking equipment, taking the conventional button-type door opening structure as an example, is usually designed to be relatively simple, with only one limitation. That is, only one operation (touching the door opening button) is needed to make the door automatically pop open, which makes its door opening mechanism a significant safety hazard, especially the safety risk of children accidentally touching the door opening button, causing the door to pop open and burn the children.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] In view of this, the present invention aims to propose a door opening structure for a cooking device and a cooking device in order to solve the problem of insufficient safety of conventional button-type door opening structures in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A door opening structure for a cooking appliance includes a door hook, a door hook limiting arm, a transmission arm assembly, and a locking valve. The door hook is movable relative to the door hook limiting arm and can engage or disengage with the door hook limiting arm. The transmission arm assembly abuts against the door hook and the door opening button of the cooking appliance. The door opening structure has an opening mode and a locking mode. In the opening mode, the transmission arm assembly, under external force, can drive the door hook to move, causing the door hook to separate from the door hook limiting arm. In the locking mode, the locking valve abuts against the transmission arm assembly, preventing the transmission arm assembly from moving.

[0008] Furthermore, the door opening structure includes a switch bracket, the transmission arm assembly is connected to the switch bracket in a manner that allows it to rotate relative to the switch bracket, the locking valve has a telescopic rod, in the locked condition, the telescopic rod extends and abuts against the transmission arm assembly to prevent the transmission arm assembly from rotating, in the open condition, the telescopic rod retracts and separates from the transmission arm assembly, the transmission arm assembly is able to rotate and drive the door hook to separate from the door hook limiting arm.

[0009] Furthermore, the transmission arm assembly includes a first rotating arm, the switch bracket is provided with a second rotating shaft, the first rotating arm is capable of rotating around the second rotating shaft as the rotation center axis, the first rotating arm is provided with a driven arm and a stop arm, the driven arm is capable of abutting against the door hook, and the telescopic rod is capable of abutting against or separating from the stop arm.

[0010] Furthermore, the door opening structure includes a micro switch connected to a switch bracket. A contact is provided on the side of the micro switch near the stop arm. In the locked state, the stop arm can simultaneously abut against the telescopic rod and the contact. In the open state, the stop arm can separate from the contact.

[0011] Furthermore, the transmission arm assembly includes a support rod, one side of which abuts against the door opening button, and the other side abuts against the driven arm.

[0012] Furthermore, the support rod includes a first rotating shaft arm and a toggle arm. The support rod is connected to the switch bracket via the first rotating shaft arm in a manner that allows it to rotate relative to the switch bracket. The toggle arm abuts against the driven arm.

[0013] Furthermore, a button push rod is provided on the side of the door opening button near the support member, and the button push rod can abut against the support member.

[0014] Furthermore, the switch bracket is provided with a support column, the button push rod can pass through the support column and abut against the support rod, and the support rod can abut against or separate from the support column.

[0015] Furthermore, the locking valve is provided with a bracket, and the locking valve is connected to the switch bracket through the bracket.

[0016] A cooking device, including a door opening structure for the cooking device.

[0017] Compared with the prior art, the door opening structure and cooking device of this utility model have the following advantages:

[0018] The opening structure and cooking device of this utility model not only ensure that the door of the cooking device is firmly locked in the closed state, effectively preventing the door from being accidentally opened and improving the safety of the button-type opening structure, but also the entire opening structure is simple in structure and easy to operate, thus improving safety while also taking into account the user's convenience. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the door opening structure of a cooking device according to an embodiment of the present invention in the locked condition;

[0021] Figure 2 This is a schematic diagram showing the relative state between the solenoid valve and the lower rotating arm under the locking condition in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the door opening structure of a cooking device according to an embodiment of the present invention under the door opening condition (door open state);

[0023] Figure 4 This is a schematic diagram showing the relative state between the solenoid valve and the lower rotating arm in the door-opening condition (door-open state) of an embodiment of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Switch bracket; 2. Door hook; 3. Door hook limiting arm; 4. Support rod; 41. First rotating arm; 42. Actuating arm; 5. First rotating arm; 51. Driven arm; 52. Second rotating shaft; 53. Stop arm; 531. First stop surface; 532. Second stop surface; 61. Bracket; 62. Locking valve; 63. Telescopic rod; 7. Micro switch; 71. Contact; 8. Second rotating arm; 9. Support column; 10. Button push rod. Detailed Implementation

[0026] The inventive concepts of this disclosure will be described below using terminology commonly used by those skilled in the art to convey the essence of their work to others skilled in the art. However, these inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To address the safety deficiencies of conventional push-button door opening mechanisms in existing technologies, this embodiment proposes a door opening structure for a cooking appliance, as shown in the attached diagram. Figure 1-4As shown, the door opening structure includes a door hook 2, a door hook limiting arm 3, a transmission arm assembly, and a locking valve 62. The door hook 2 can move relative to the door hook limiting arm 3 and engage or disengage with the door hook limiting arm 3. The transmission arm assembly abuts against the door hook 2 and the door opening button of the cooking equipment. The door opening structure has an opening mode and a locking mode. In the opening mode, the transmission arm assembly is subjected to external force to drive the door hook 2 to move, causing the door hook 2 to separate from the door hook limiting arm 3, and the door of the cooking equipment can be opened accordingly. In the locking mode, the locking valve 62 abuts against the transmission arm assembly to prevent the movement of the transmission arm assembly and the door hook 2.

[0030] It should be noted that in the open position, the transmission arm assembly moves the door hook 2 under external force. This can be understood as the open button moving the transmission arm assembly under external force, which in turn moves the door hook 2. Essentially, the external force acts directly on the open button and is then transmitted to the door hook 2 by the transmission arm assembly. In the locked position, due to the stop function of the locking valve 62, the transmission arm assembly will not move even under external force, nor will it cause the door hook 2 to separate from the door hook limiting arm 3. Therefore, even if the user accidentally presses the open button, the door of the cooking appliance will not open.

[0031] Therefore, the door opening structure proposed in this application not only ensures that the cooking equipment door is securely locked when closed, effectively preventing the door from being accidentally opened and improving the safety of the button-type door opening structure, but also has a simple structure and is easy to operate, thus improving safety while also taking into account the user's convenience.

[0032] Correspondingly, under normal operating conditions after the cooking equipment is closed, the door opening mechanism is in a locked state, effectively preventing heat loss and accidental external interference. When the user needs to open the door, the door opening mechanism must first be switched from the locked state to the open state. This operation usually requires a certain amount of force or specific unlocking steps, such as pressing the unlock button or rotating the unlock switch, and then the user can press the open button to open the door. Simultaneously, after the user closes the door, the cooking equipment can automatically switch from the open state to the locked state, or the user can lock it by applying a certain amount of force or following specific unlocking steps (such as pressing the lock button or rotating the unlock / lock switch).

[0033] The door opening structure includes a switch bracket 1. The transmission arm assembly is connected to the switch bracket 1 in a manner that allows it to rotate relative to the switch bracket 1. The locking valve 62 has a telescopic rod 63. In the locked state, the telescopic rod 63 extends and abuts against the transmission arm assembly to prevent the transmission arm assembly from rotating. In the open state, the telescopic rod 63 retracts and separates from the transmission arm assembly, allowing the transmission arm assembly to rotate and cause the door hook 2 to separate from the door hook limiting arm 3. Thus, when the door is locked, the telescopic rod 63 prevents the transmission arm assembly from rotating, and correspondingly, the locked transmission arm assembly will not cause the door hook 2 to separate from the door hook limiting arm 3, ensuring the door is securely locked.

[0034] The transmission arm assembly includes a first rotating arm 5, and the switch bracket 1 is provided with a second rotating shaft 52. The first rotating arm 5 can rotate around the second rotating shaft 52 as the rotation center axis. The first rotating arm 5 is provided with a driven arm 51 and a stop arm 53. The driven arm 51 can abut against the door hook 2. When the first rotating arm 5 rotates, it can drive the door hook 2 to move through the driven arm 51, so that the door hook 2 is separated from the door hook limiting arm 3. The telescopic rod 63 can abut against or separate from the stop arm 53. Thus, in the locked state, the transmission arm assembly abuts against the telescopic rod 63 through the stop arm 53, preventing the transmission arm assembly from driving the door hook 2 to move. Even if the user accidentally touches the door opening button, the door of the cooking equipment will not open. In the open state, the stop arm 53 separates from the telescopic rod 63. When external force is transmitted to the first rotating arm 5, the first rotating arm 5 can rotate, and drive the door hook 2 to move through the driven arm 51, so as to realize the subsequent door opening.

[0035] The door opening structure includes a micro switch 7, which is connected to the switch bracket 1. A contact 71 is located on the side of the micro switch 7 near the stop arm 53. In the locked state, the stop arm 53 simultaneously abuts against the telescopic rod 63 and the contact 71. In the open state, as the first rotating arm 5 rotates, the stop arm 53 separates from the contact 71. This design simplifies the structure and assembly of the first rotating arm 5 and the transmission arm assembly, minimizing the need for excessive abutment arms. Furthermore, the contact or separation of the stop arm 53 and the contact 71 directly triggers the micro switch 7, enabling the transmission of specific circuit connections or signals. This facilitates communication between the open and closed states of the cooking equipment and the on / off states of certain circuits and signals, achieving precise conversion between mechanical actions and electrical signals, and contributing to improved intelligence of the cooking equipment.

[0036] Specifically, the stop arm 53 is provided with two stop surfaces, referred to as the first stop surface 531 and the second stop surface 532 respectively. The first stop surface 531 can abut against the telescopic rod 63, and the second stop surface 532 can abut against the contact point 71. For the form of the first stop surface 531 and the second stop surface 532, please refer to the attached drawings of this application. For example, the first stop surface 531 is a plane and the second stop surface 532 is an arc surface. Of course, this application is only for simple illustration and is not limited to this.

[0037] For conventional push-button cooking appliances, there is often a certain distance between the door opening button and the door hook 2. To facilitate the transmission of external force from the door opening button to the door hook 2, and to avoid unnecessarily increasing the size of the first rotating arm 5, the transmission arm assembly includes a support rod 4. One side of the support rod 4 abuts against the door opening button, and the other side abuts against the driven arm 51. Thus, when an external force touches the door opening button, the support rod 4 can transmit the external force from the door opening button to the driven arm 51 of the first rotating arm 5. Correspondingly, the driven arm 51 abuts against both the door hook 2 and the support rod 4. This simplifies the structure and assembly relationship of the first rotating arm 5, and allows the support rod 4 to act as a transition point between the door opening button and the first rotating arm 5, avoiding the problem that the distance between the door opening button and the door hook 2 is too large, making it difficult for the first rotating arm 5 to achieve transmission independently.

[0038] The support rod 4 includes a first rotating shaft arm 41 and a toggle arm 42. The support rod 4 is connected to the switch bracket 1 via the first rotating shaft arm 41 in a manner that allows it to rotate relative to the switch bracket 1. The toggle arm 42 abuts against the driven arm 51. Specifically, the switch bracket 1 is provided with a first rotating shaft (obscured and not shown). The first rotating shaft arm 41 is assembled with the first rotating shaft, so that the support rod 4 can rotate about the first rotating shaft as the rotation center axis.

[0039] In addition, a button push rod 10 is provided on the side of the door opening button near the support rod 4. The button push rod 10 can abut against the support rod 4. Thus, when the user presses the door opening button, the button push rod 10 will push the support rod 4 to rotate. The actuating arm 42 of the support rod 4 will then push the driven arm 51 and cause the first rotating arm 5 to rotate. At the same time, the first rotating arm 5 will also drive the door hook 2 to separate from the door hook limiting arm 3 through the driven arm 51, thereby realizing the door opening.

[0040] Of course, it should be noted that if the space between the door opening button and the door hook 2 is appropriate, and the component size design and layout are proper, this application may not need to set the support rod 4. At least in theory, it is sufficient to directly abut the driven arm 51 of the first rotating arm 5 against the corresponding structure of the door opening button.

[0041] The switch bracket 1 is equipped with a support column 9. The button push rod 10 can pass through the support column 9 and abut against the support rod 4. When the door opening button is not subjected to external force, the support rod 4 can abut against the support column 9. When subjected to external force, the door opening button pushes the support rod 4 to rotate, and the support rod 4 can separate from the support column 9. Thus, by setting the support column 9, on the one hand, the pushing direction of the door opening button and the button push rod 10 is guided and limited. On the other hand, when the door opening button is not subjected to external force, the support column 9 can limit the reset position (or initial position) of the support rod 4 and the entire transmission arm assembly, preventing the support rod 4 from being misaligned due to excessive rotation. Correspondingly, in terms of transmission relationship, it can also prevent the first rotating arm 5 from being misaligned due to excessive rotation.

[0042] Regarding the assembly of the locking valve 62, the locking valve 62 is provided with a bracket 61, and the locking valve 62 is connected to the switch bracket 1 through the bracket 61. Combined with the arrangement and assembly of the door hook 2, door hook limiting arm 3, and transmission arm assembly, the entire door opening structure can reliably lock and smoothly open within a stable space.

[0043] Furthermore, given that conventional push-button door opening mechanisms typically have two door hooks 2 and two door hook limiting arms 3, the door opening structure in this application may also include a second rotating arm 8. A cooperating element (not shown) may be provided between the second rotating arm 8 and the first rotating arm 5. When the first rotating arm 5 rotates, it can drive the second rotating arm 8 to rotate in tandem (synchronously). Correspondingly, the rotation of the second rotating arm 8 can cause the other door hook 2 to separate from its corresponding door hook limiting arm 3. Simultaneously, in the locked state, since the first rotating arm 5 cannot rotate, the second rotating arm 8 will also not rotate, ensuring that both door hooks 2 are firmly engaged with their corresponding door hook limiting arms 3.

[0044] For any cooking device, such as a microwave oven or a steam oven, the relevant technical content provided in this embodiment can be included. Furthermore, the cooking device also includes conventional components such as a door, outer shell, and electronic control components. Since these conventional components can be directly referenced from existing technologies, they will not be described in detail here. Additionally, for features such as automatic door opening with push-button operation and automatic reset of mechanical door opening buttons, these can be achieved using structures such as torsion springs or springs, or by employing existing technologies, and will not be described in detail here.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A door opening structure of a cooking appliance, characterized by, The door opening structure comprises a door hook (2), a door hook limiting arm (3), a transmission arm assembly, and a locking valve (62). The door hook (2) is movable relative to the door hook limiting arm (3) and is connected or disconnected with the door hook limiting arm (3). The transmission arm assembly is respectively abutted with the door hook (2) and an opening door button of the cooking device. The door opening structure has an opening door working condition and a locking working condition. In the opening door working condition, the transmission arm assembly is driven by external force to move the door hook (2) so that the door hook (2) is disconnected with the door hook limiting arm (3). In the locking working condition, the locking valve (62) is abutted with the transmission arm assembly to prevent the transmission arm assembly from moving.

2. The door opening structure of a cooking appliance according to claim 1, characterized in that, The door opening structure comprises a switch bracket (1). The transmission arm assembly is connected with the switch bracket (1) in a manner that can rotate relative to the switch bracket (1). The locking valve (62) has a telescopic rod (63). In the locking working condition, the telescopic rod (63) is extended and abutted with the transmission arm assembly to prevent the transmission arm assembly from rotating. In the opening door working condition, the telescopic rod (63) is retracted and disconnected with the transmission arm assembly. The transmission arm assembly can rotate and drive the door hook (2) to be disconnected with the door hook limiting arm (3).

3. The door opening structure of a cooking appliance according to claim 2, characterized in that, The transmission arm assembly comprises a first rotating arm (5). The switch bracket (1) is provided with a second rotating shaft (52). The first rotating arm (5) can rotate around the second rotating shaft (52) as a rotating center shaft. The first rotating arm (5) is provided with a driven arm (51) and a stop arm (53). The driven arm (51) can be abutted with the door hook (2). The telescopic rod (63) can be abutted or disconnected with the stop arm (53).

4. The door opening structure of a cooking appliance according to claim 3, characterized in that, The door opening structure comprises a micro switch (7). The micro switch (7) is connected with the switch bracket (1). The micro switch (7) is provided with a contact (71) on the side close to the stop arm (53). In the locking working condition, the stop arm (53) can be abutted with the telescopic rod (63) and the contact (71) at the same time. In the opening door working condition, the stop arm (53) can be disconnected with the contact (71).

5. The door opening structure of a cooking appliance according to claim 3, characterized in that, The transmission arm assembly comprises a supporting rod (4). One side of the supporting rod (4) is abutted with the opening door button, and the other side is abutted with the driven arm (51).

6. The door opening structure of a cooking appliance according to claim 5, characterized in that, The supporting rod (4) comprises a first rotating shaft arm (41) and a pushing arm (42). The supporting rod (4) is connected with the switch bracket (1) in a manner that can rotate relative to the switch bracket (1) through the first rotating shaft arm (41). The pushing arm (42) is abutted with the driven arm (51).

7. The door opening structure of a cooking appliance according to claim 5, characterized in that, The opening door button is provided with a button push rod (10) on the side close to the supporting rod (4). The button push rod (10) can be abutted with the supporting rod (4).

8. The door opening structure of a cooking appliance according to claim 7, characterized in that, The switch bracket (1) is provided with a support column (9). The button push rod (10) can penetrate through the support column (9) and be abutted with the supporting rod (4). The supporting rod (4) can be abutted or disconnected with the support column (9).

9. The door opening structure of a cooking appliance according to claim 2, characterized in that, The locking valve (62) is provided with a bracket (61), and the locking valve (62) is connected with the switch bracket (1) through the bracket (61).

10. A cooking apparatus, characterized by, The cooking device comprises the door opening structure of the cooking device according to any one of claims 1-9.

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