Door opening structure and cooking equipment

Abstract

The utility model relates to the technical field of household appliances, and provides a door opening structure and cooking equipment, the door opening structure is used for the cooking equipment, the cooking equipment comprises a box body and a door assembly, the door opening structure comprises a hinge device, the hinge device comprises a hinge body, a tension spring and a connecting rod, and one end of the connecting rod is fixedly connected with the box body; the other end of the connecting rod is hinged to the door assembly. One end of the hinge body is connected with the box body through a tension spring, and the other end of the hinge body is connected with the door assembly; the damper is mounted on the box body; when the door assembly is opened, the door assembly is pulled, the door assembly can drive the hinge body to slide forwards, the tension spring is in a stretching state, and the damper is in a non-stress state; when the door assembly is closed, the hinge body slides backwards under the action of restoring force of the tension spring, and the damper bears the pressure of the hinge body and plays a buffering role. According to the door opening structure, the door closing noise is reduced, and the smooth hand feeling of door opening and closing is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and more specifically, to a door opening structure and cooking equipment. Background Technology

[0002] In the field of modern kitchen appliances, microwave ovens, as convenient and efficient cooking devices, are widely used in homes and restaurants. As consumers increasingly demand safety and convenience in using microwave ovens, the door design has gradually become a key focus for manufacturers.

[0003] Existing microwave oven door opening mechanisms, especially pull-down door microwave ovens, suffer from problems such as loud closing noise and unsmooth door opening and closing.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] The purpose of this invention is to propose a door opening structure and cooking equipment to solve the problems of loud door closing noise and unsmooth door opening and closing in existing microwave oven door opening structures.

[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, the cooking appliance including a housing and a door assembly, the door opening structure comprising:

[0008] A hinge device is provided for rotating a door assembly relative to a housing to close or open it. The hinge device includes a hinge body, a tension spring, and a connecting rod. One end of the connecting rod is fixedly connected to the housing, and the other end of the connecting rod is hinged to the door assembly. One end of the hinge body is connected to the housing via the tension spring, and the other end of the hinge body is connected to the door assembly.

[0009] A damper, which is mounted on the housing;

[0010] When the door assembly is opened, pulling the door assembly causes the hinge body to slide forward, the tension spring is in a stretched state, and the damper is in a stress-free state.

[0011] When the door assembly is closed, the hinge body slides backward under the restoring force of the tension spring, and the damper is subjected to the pressure of the hinge body and plays a buffering role.

[0012] The door opening structure described in this utility model organically combines a hinge body that slides back and forth, a tension spring of an elastic element, a connecting rod of a guide mechanism, and a damper of an energy-consuming element, achieving a "soft landing" for opening and closing the microwave oven door. Firstly, it not only reduces the noise of the cooking equipment closing the door but also improves the smoothness of opening and closing the door; secondly, it reduces mechanical impact and extends the service life of the cooking equipment; and thirdly, it can be adapted to door components of different sizes and weights, possessing significant potential for widespread adoption.

[0013] Furthermore, the hinge device also includes a roller, and when the door assembly rotates open or closes relative to the front panel of the housing, it causes the hinge body to slide forward or backward along the receiving groove above the roller.

[0014] Furthermore, the hinge device also includes a hinge support, which is fixed to the housing. The tension spring and the connecting rod are both connected to the hinge support, and the roller is mounted on the hinge support and supports the hinge body to slide relative to it.

[0015] Furthermore, the damper is mounted on the hinge support.

[0016] Furthermore, two hinge devices are designed, which are arranged on opposite sides of the opening of the housing, and one damper is provided, which is located at one of the hinge devices on one side.

[0017] Furthermore, a contact arm structure is provided on the hinge body on the side where the damper is located, and the contact arm structure is in contact with or separate from the damper.

[0018] Furthermore, the contact arm structure includes a contact arm body and a contact plate body. The contact arm body extends toward the damper, and the contact plate body is disposed at the end of the contact arm body near the damper. The contact plate body extends toward the housing.

[0019] Furthermore, a connecting shaft is provided on the door assembly, the connecting shaft is disposed in the receiving groove, and a slot is provided at the end of the hinge body away from the tension spring, the slot cooperating with the connecting shaft.

[0020] Furthermore, a hinge pin is provided on the door assembly, and a first adapter hole is provided on the connecting rod near one end of the door assembly, the first adapter hole being hinged to the hinge pin.

[0021] In a second aspect, a cooking device is provided, the cooking device including a housing and a door assembly, the door assembly being located on the front side of the housing, and any of the above-mentioned opening structures being provided on the cooking device, the opening structure being used for the door assembly to rotate and close or rotate and open relative to the housing.

[0022] Compared with the prior art, the door opening structure and cooking device described in this utility model have the following beneficial effects:

[0023] The door opening structure and cooking equipment described in this utility model organically combine a hinge body that slides back and forth, a tension spring of elastic element, a connecting rod of guide mechanism, and a damper of energy-consuming element, realizing a "soft landing" for opening and closing the microwave oven door. First, it not only reduces the noise of the cooking equipment when closing the door, but also improves the smoothness of opening and closing the door; second, it reduces mechanical impact and extends the service life of the cooking equipment; third, it can be adapted to door components of different sizes and weights, and has the potential for widespread application. Attached Figure Description

[0024] Figure 1 This is one of the three-dimensional structural schematic diagrams of a cooking device according to an embodiment of the present utility model;

[0025] Figure 2 This is a second three-dimensional structural schematic diagram of a cooking device according to an embodiment of the present utility model;

[0026] Figure 3 for Figure 2 Enlarged 3D structural diagram at point A;

[0027] Figure 4 This is a three-dimensional structural diagram of a door assembly of a cooking device according to an embodiment of the present utility model;

[0028] Figure 5 for Figure 4 Enlarged 3D structural diagram at point A;

[0029] Figure 6 This is the third perspective structural diagram of a cooking device according to an embodiment of the present utility model;

[0030] Figure 7 for Figure 6 Enlarged 3D structural diagram at point A;

[0031] Figure 8 This is one of the three-dimensional structural schematic diagrams of the hinge body of a door opening structure according to an embodiment of the present utility model;

[0032] Figure 9 This is a second three-dimensional structural schematic diagram of the hinge body of a door opening structure according to an embodiment of the present utility model;

[0033] Figure 10 This is a three-dimensional structural diagram of a roller for a door opening structure according to an embodiment of the present utility model;

[0034] Figure 11This is a three-dimensional structural diagram of a hinge support for a door opening structure according to an embodiment of the present utility model;

[0035] Figure 12 This is a three-dimensional structural diagram of the connecting rod of a door opening structure according to an embodiment of the present utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Cooking equipment; 1. Heating chamber; 2. Cabinet; 21. Front panel; 3. Door assembly; 4. Connecting shaft; 5. Hinge device; 51. Hinge body; 511. First slot; 512. Arc-shaped recess; 513. Contact arm structure; 5131. Contact arm body; 5132. Contact plate body; 514. Fifth mounting hole; 515. Second slot; 52. Hinge support; 521. Second mounting hole; 522. Hook; 523. Third mounting hole; 53. Tension spring; 54. Roller; 541. Arc-shaped mounting groove; 542. First mounting hole; 55. Connecting rod; 551. First adapter hole; 552. Fourth mounting hole; 6. Damper; 8. Hinge shaft; 9. Receiving groove. Detailed Implementation

[0038] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0039] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Example 1

[0044] Existing microwave oven door opening mechanisms suffer from problems such as loud closing noise and unsmooth door opening and closing.

[0045] To solve the above technical problems, such as Figures 1-12 As shown, this embodiment proposes a door opening structure for the cooking device 100, as follows: Figure 1 As shown, the cooking device 100 includes a housing 2 and a door assembly 3. The door assembly 3 is located on the front side of the housing 2, and the door opening structure is used for the door assembly 3 to rotate and close or rotate and open relative to the housing 2.

[0046] like Figure 3 As shown, the door opening structure includes:

[0047] Hing device 5, which includes hinge body 51, tension spring 53 and connecting rod 55.

[0048] like Figure 5 and Figure 7 As shown, a hinge pin 8 is provided in the housing 2. One end of the connecting rod 55 is fixedly connected to the housing 2, and the other end of the connecting rod 55 is hinged to the door assembly 3 via the hinge pin 8. The connecting rod 55 is used for the door assembly 3 to rotate relative to the hinge pin 8. This structure constrains the movement trajectory of the door, prevents jamming or impact caused by deviation during closing, and disperses the force to reduce local stress.

[0049] One end of the hinge body 51 is connected to the housing 2 via a tension spring 53, and the other end of the hinge body 51 is connected to the door assembly 3. The hinge body 51 is used to be pulled when the door assembly 3 is closed and to press tightly against the front panel 21 of the housing 2.

[0050] The damper 6 is installed on the housing 2. The damper 6 is only compressed during the closing stage (it is not subjected to force when the door is open), thus realizing "one-way buffering". The damping force increases at the end of the closing stage, which significantly reduces the speed and energy of the door assembly 3 hitting the housing 2, thereby reducing noise.

[0051] When the door assembly 3 is opened, pulling the door assembly 3 will cause the hinge body 51 to slide forward, the tension spring 53 will be in a stretched state, and the damper 6 will be in a stress-free state.

[0052] When the door assembly 3 is closed, the hinge body 51 slides backward under the restoring force of the tension spring 53, converting the tension of the tension spring 53 into pressure on the damper 6. This sliding design changes the force transmission path, enabling the damper 6 to absorb kinetic energy more efficiently, while reducing the impact of the hinge directly contacting the housing. The damper 6 is subjected to the pressure of the hinge body 51 and plays a buffering role, so that the door assembly 3 has a damping effect when closed.

[0053] The door opening structure described in this embodiment organically combines the hinge body 51 that slides back and forth, the tension spring 53 of the elastic element, the connecting rod 55 of the guide mechanism, and the damper 6 of the energy-consuming element, realizing a "soft landing" for opening and closing the microwave oven door. First, it not only reduces the noise of the microwave oven door closing, but also improves the smoothness of opening and closing the door; second, it reduces mechanical impact and extends service life; third, it can be adapted to doors of different sizes and weights, and has the potential for widespread application.

[0054] As a preferred example of this application, such as Figure 3 and Figure 5 As shown, the hinge device 5 also includes a roller 54. When the door assembly 3 rotates to open or close relative to the front panel 21, it drives the hinge body 51 to slide forward or backward along the receiving groove 9 above the roller 54. In the example of this application, the design of the hinge device 5 cleverly incorporates the roller 54, which, together with the door assembly 3 and the front panel 21, constitutes a smooth motion mechanism. When the door assembly 3 rotates relative to the front panel 21 to open or close, this rotational motion is effectively transmitted through the hinge body 51 and converted into sliding motion above the roller 54. Specifically, supported by the roller 54, the hinge body 51 slides forward or backward along the receiving groove 9. The design of the roller 54 not only provides the necessary sliding support and reduces frictional resistance, making the door assembly 3 require less force to open or close, and the operation more convenient and smooth, but also ensures the stability and accuracy of the sliding process.

[0055] As a preferred example of this application, such as Figure 8 and Figure 9 As shown, an arc-shaped recess 512 is provided on the hinge body 51, such as... Figure 10As shown, an arc-shaped mounting groove 541 is provided on the roller 54, and the arc-shaped recess 512 cooperates with the arc-shaped mounting groove 541.

[0056] More specifically, the arc-shaped mounting groove 541 is disposed on the outer circumference side of the roller 54, the arc-shaped recess 512 is disposed below the hinge body 51, and the arc-shaped recess 512 extends upward toward the hinge body 51.

[0057] As a preferred example of this application, the hinge body 51 is mounted on the housing 2.

[0058] As a preferred example of this application, such as Figure 8 and Figure 9 As shown, a fifth mounting hole 514 is provided on the hinge body 51, and the hinge body 51 is mounted on the housing 2 through the fifth mounting hole 514.

[0059] As a preferred example of this application, such as Figure 5 As shown, a connecting shaft 4 is provided on the door assembly 3, and the connecting shaft 4 is disposed within the receiving groove 9, as shown. Figure 8 and Figure 9 As shown, a first slot 511 is provided at the end of the hinge body 51 away from the tension spring 53, and the first slot 511 cooperates with the connecting shaft 4. In the example of this application, the connecting shaft 4 is used as a connector to achieve a stable connection between the hinge body 51 and the door assembly 3. This not only provides sufficient mechanical strength to withstand various forces during the movement of the door assembly 3, but also ensures the stability and durability of the connection, making it less likely for the door to loosen or fall off during long-term use. When the door assembly 3 is subjected to external force, this connection method can ensure the effective transmission of force, allowing the hinge body 51 to smoothly respond to the movement of the door assembly 3 and achieve smooth opening and closing of the door.

[0060] As a preferred example of this application, such as Figure 5 and Figure 7 As shown, a hinge pin 8 is provided on the door assembly 3, such as... Figure 3 As shown, a first adapter hole 551 is provided on the connecting rod 55 near the end of the door assembly 3, and the first adapter hole 551 is hinged to the hinge shaft 8.

[0061] As a preferred example of this application, such as Figure 3 and Figure 7As shown, the hinge device 5 also includes a hinge support 52, which is fixed to the housing 2. The tension spring 53 and the connecting rod 55 are both connected to the hinge support 52. The roller 54 is mounted on the hinge support 52 and supports the hinge body 51 to slide relative to it. In the example of this application, one end of the tension spring 53 is connected to the hook 522 at the rear end of the hinge support 52, and the other end of the tension spring 53 is connected to the second slot 515 at the rear end of the hinge body 51. This design, with the fixed hinge support 52, enhances the stability of the structure, optimizes the cooperation of various components, and makes it less likely for the door assembly 3 to loosen or shift during use, ensuring the normal opening and closing of the door and extending the service life of the hinge device 5.

[0062] As a preferred example of this application, such as Figure 10 As shown, a first mounting hole 542 is provided at the center of the roller 54, as... Figure 11 As shown, a second mounting hole 521 is provided on the hinge support 52, and the first mounting hole 542 cooperates with the second mounting hole 521.

[0063] As a preferred example of this application, such as Figure 11 As shown, a third mounting hole 523 is provided on the hinge support 52, and a fourth mounting hole 552 is provided on the connecting rod 55. The third mounting hole 523 and the fourth mounting hole 552 cooperate with each other.

[0064] As a preferred example of this application, such as Figure 3 As shown, the damper 6 is installed on the hinge support 52. Firstly, this design makes the entire door opening structure more compact, reducing the space occupied inside the cooking equipment 100. Secondly, it ensures that the damper 6 functions stably during the closing process, making it less susceptible to external factors. Thirdly, it simplifies the installation process and reduces installation steps. This design also facilitates subsequent maintenance and replacement work, as all relevant components are concentrated in a relatively small area. Fourthly, it ensures that the damping force is more effectively transmitted to the door assembly 3 during the closing process, resulting in a smoother and quieter closing effect.

[0065] As a preferred example of this application, such as Figure 2 As shown, two hinge devices 5 are designed, and the two hinge devices 5 are arranged on opposite sides of the opening of the box body 2. This design can provide more even support and rotation points, ensuring that the door assembly 3 can remain stable when closed and is less prone to tilting or jamming. In the example of this application, a set of hinge devices 5 is designed on each of the left and right sides of the opening of the box body 2.

[0066] Specifically, the number of dampers 6 is not specifically limited.

[0067] As a preferred example of this application, such as Figure 3 As shown, one damper 6 is provided, and the damper 6 is located at the hinge device 5 on one side. This design can reduce costs and simplify the structure while ensuring the door closing effect.

[0068] As a preferred example of this application, such as Figure 3 As shown, a contact arm structure 513 is provided on the hinge body 51 on the side where the damper 6 is located. The contact arm structure 513 contacts or separates from the damper 6. The contact arm structure 513 ensures effective contact between the hinge body 51 and the damper 6. This means that during the closing process, the damper 6 can accurately absorb the kinetic energy of the door assembly 3, thereby achieving smooth closing.

[0069] As a preferred example of this application, such as Figure 8 and Figure 9 As shown, the contact arm structure 513 includes a contact arm body 5131 and a contact plate body 5132. The contact arm body 5131 extends towards the damper 6, and the contact plate body 5132 is disposed at the end of the contact arm body 5131 near the damper 6. This ensures that the contact plate body 5132 provides a stable contact surface when the contact arm body 5131 contacts the damper 6. The contact plate body 5132 extends towards the housing 2. This design allows the contact plate body 5132 to contact the damper 6 more effectively during the closing process, thereby increasing the damping effect.

[0070] The door opening structure described in this embodiment organically combines the hinge body 51 that slides back and forth, the tension spring 53 of the elastic element, the connecting rod 55 of the guide mechanism, and the damper 6 of the energy-consuming element, realizing a "soft landing" for opening and closing the microwave oven door. First, it not only reduces the noise of the microwave oven door closing, but also improves the smoothness of opening and closing the door; second, it reduces mechanical impact and extends service life; third, it can be adapted to doors of different sizes and weights, and has the potential for widespread application.

[0071] Example 2

[0072] This embodiment proposes a cooking device 100, which includes a housing 2 and a door assembly 3. The door assembly 3 is located on the front side of the housing 2. The cooking device 100 is provided with an opening structure as described in any one of Embodiment 1. The opening structure is used for the door assembly 3 to rotate and close or rotate and open relative to the housing 2.

[0073] The cooking device 100 also includes a heating chamber 1, which is located inside the housing 2 and is used to hold food to be heated. The door assembly 3 is used to seal or open the heating chamber 1.

[0074] The cooking equipment 100 includes, but is not limited to, kitchen appliances such as microwave ovens, ovens, steam ovens, and integrated appliances.

[0075] In this embodiment, the internal volume of the cooking device 100 is not specifically limited.

[0076] As a preferred example of this application, the internal volume of the cooking device 100 is 30L.

[0077] The advantages of the cooking device 100 over the prior art are the same as those of the aforementioned door opening structure, and will not be repeated here.

[0078] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A door opening structure, characterized in that, The door opening structure is used for a cooking device (100), the cooking device (100) including a housing (2) and a door assembly (3), the door opening structure including: A hinge device (5) is used to rotate and close or rotate and open the door assembly (3) relative to the box body (2); the hinge device (5) includes a hinge body (51), a tension spring (53) and a connecting rod (55), one end of the connecting rod (55) is fixedly connected to the box body (2), and the other end of the connecting rod (55) is hinged to the door assembly (3); one end of the hinge body (51) is connected to the box body (2) through the tension spring (53), and the other end of the hinge body (51) is connected to the door assembly (3); A damper (6) is mounted on the housing (2); When the door assembly (3) is opened, pulling the door assembly (3) will cause the hinge body (51) to slide forward, the tension spring (53) will be in a stretched state, and the damper (6) will be in a stress-free state. When the door assembly (3) is closed, the hinge body (51) slides backward under the restoring force of the tension spring (53), and the damper (6) is subjected to the pressure of the hinge body (51) and plays a buffering role.

2. The door opening structure according to claim 1, characterized in that, The hinge device (5) also includes a roller (54), and the door assembly (3) drives the hinge body (51) to slide forward or backward along the receiving groove (9) above the roller (54) when the front plate (21) of the box body (2) is rotated open or rotated closed.

3. The door opening structure according to claim 2, characterized in that, The hinge device (5) further includes a hinge support (52), which is fixed on the housing (2). The tension spring (53) and the connecting rod (55) are both connected to the hinge support (52). The roller (54) is mounted on the hinge support (52) and supports the hinge body (51) to slide relative to it.

4. The door opening structure according to claim 3, characterized in that, The damper (6) is mounted on the hinge support (52).

5. The door opening structure according to claim 1, characterized in that, Two hinge devices (5) are designed and the two hinge devices (5) are set on opposite sides of the opening of the box (2). One damper (6) is set and the damper (6) is set at the hinge device (5) on one side.

6. The door opening structure according to claim 5, characterized in that, A contact arm structure (513) is provided on the hinge body (51) on one side where the damper (6) is provided, and the contact arm structure (513) is in contact with or separates from the damper (6).

7. The door opening structure according to claim 6, characterized in that, The contact arm structure (513) includes a contact arm body (5131) and a contact plate body (5132). The contact arm body (5131) extends toward the damper (6), and the contact plate body (5132) is disposed at the end of the contact arm body (5131) on the side near the damper (6). The contact plate body (5132) extends toward the housing (2).

8. The door opening structure according to claim 2, characterized in that, A connecting shaft (4) is provided on the door assembly (3), the connecting shaft (4) is located in the receiving groove (9), and a slot (511) is provided at one end of the hinge body (51) away from the tension spring (53), the slot (511) cooperating with the connecting shaft (4).

9. The door opening structure according to claim 1, characterized in that, A hinge shaft (8) is provided on the door assembly (3), and a first adapter hole (551) is provided on the connecting rod (55) near one end of the door assembly (3). The first adapter hole (551) is hinged to the hinge shaft (8).

10. A cooking device, characterized in that, The cooking device (100) includes a housing (2) and a door assembly (3), the door assembly (3) being located on the front side of the housing (2), and an opening structure as described in any one of claims 1 to 9 being provided on the cooking device (100), the opening structure being used for the door assembly (3) to rotate and close or rotate and open relative to the housing (2).

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