Door opening and closing hinge device and cooking device

Abstract

The utility model relates to the technical field of cooking equipment, and provides a door opening and closing hinge device and a cooking device.The door opening and closing hinge device comprises a connecting rod, one end of the connecting rod is directly or indirectly fixedly connected with a main body structure, the other end of the connecting rod is hinged to a door assembly through a second rotating shaft, and the connecting rod is used for overturning the door assembly relative to a second rotating shaft line; one end of the hinge is directly or indirectly connected with the main body structure through a tension spring, the other end of the hinge is hinged to the door assembly through a first rotating shaft, a rolling wheel is arranged above the hinge and can rotate along the upper portion of the hinge, and the hinge is used for being subjected to tension when the door assembly is closed and is tightly attached to a front plate of the main body structure. According to the door opening and closing hinge device, due to the structural design that the connecting rod and the hinge are arranged, the door assembly can be turned over more flexibly and freely, the stability and safety of the door assembly are enhanced, the opening and closing convenience of the door assembly is effectively improved, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooking equipment technical field especially relates to a switch door hinge device and cooking device. BACKGROUND

[0002] In the prior art, the pull-down opening door structure of cooking equipment such as microwave oven, steaming oven, etc. generally adopts the combined mode of hinge and roller support to realize the opening and closing operation of the door body. In this structure, the roller is usually arranged below the hinge, and the upper part of the roller is clamped by the hinge arc to limit the opening angle of the door body and provide necessary supporting force. However, this traditional pull-down opening door structure has the following problems in actual application:

[0003] Firstly, the pull-down opening door structure in the prior art is often relatively complex in design and assembly. Since the hinge and the roller need to be accurately matched to ensure that the door body can be smoothly and reliably opened and closed, the manufacturing and installation difficulty is increased, and at the same time, the complex structure also leads to higher cost, which is not conducive to market competition of the product.

[0004] Secondly, the pull-down opening door structure in the prior art has the problem of insufficient stability. With the increase of use time, the wear and tear between the roller and the hinge will gradually increase, causing the opening and closing of the door body to become less smooth, and even may shake or make noise, affecting the user's experience and the overall performance of the cooking equipment.

[0005] Thirdly, the sealing performance of the pull-down opening door structure in the prior art needs to be improved when closing the door. Since there is a gap between the roller and the hinge, the door body may not be completely attached to the front plate of the cooking equipment when closing, resulting in leakage of heat or steam, which reduces the cooking efficiency and further adversely affects the cooking quality.

[0006] Chinese patent CN104847202A discloses a door hinge structure, which realizes accurate control of the opening and closing force through the combination of tension spring and compression spring mechanism. However, this scheme still adopts the traditional layout mode of roller below the hinge, and fails to fundamentally solve the problems of structural complexity and stability.

[0007] Therefore, it is necessary to develop a new switch door hinge device and cooking device to solve the problems in the prior art and improve the overall performance and user experience of the cooking equipment. CONTENT OF THE UTILITY MODEL

[0008] Therefore, the utility model provides a switch door hinge device and cooking device, which aims to solve the technical problems of insufficient stability, inconvenient operation and short service life of the existing switch door hinge device in use.

[0009] To achieve the above object, the technical scheme of the utility model is as follows:

[0010] The first object of the application is to disclose a switchable door hinge device, comprising:

[0011] A connecting rod is directly or indirectly fixedly connected with the main body structure at one end and is hingedly connected with the door assembly at the other end through a second rotating shaft, and the connecting rod is used for overturning the door assembly relative to the second rotating shaft line;

[0012] A hinge is directly or indirectly connected with the main body structure at one end through a tension spring and is hingedly connected with the door assembly at the other end through a first rotating shaft, a roller is arranged above the hinge, the roller can rotate along the upper part of the hinge, and the hinge is used for the door assembly to be pulled and tightly adhere to the front plate of the main body structure when the door assembly is closed.

[0013] Further, a hinge seat is arranged on the main body structure, the connecting rod is fixedly connected with the hinge seat, and the hinge is connected with the hinge seat through the tension spring.

[0014] Further, a clamping groove is arranged on the hinge, and the clamping groove is used for cooperating with the clamping roller when the door assembly is in the closed state.

[0015] Further, the clamping groove is arranged in an arc shape.

[0016] Further, the hinge comprises a first connecting part and a second connecting part, the clamping groove is arranged at the connecting position of the first connecting part and the second connecting part, and the sectional height of the first connecting part in the vertical direction is less than the sectional height of the second connecting part in the vertical direction.

[0017] Further, a third limiting hook is arranged on the second connecting part, a first limiting hook is arranged on the hinge seat, and the two ends of the tension spring are fixedly arranged in the first limiting hook and the third limiting hook respectively.

[0018] Further, the third limiting hook is designed in an arc shape, and the arc of the third limiting hook is not less than π; the first limiting hook is designed in an arc shape, and the arc of the first limiting hook is not less than π.

[0019] Further, a second limiting hook is arranged on the first connecting part, and the second limiting hook can be hooked on the first rotating shaft.

[0020] Compared with the prior art, the switchable door hinge device has the following advantages:

[0021] (1) The door hinge device described in this utility model, through the structural design of the connecting rod and the hinge, makes the door assembly more stable when it rotates relative to the second axis of rotation, avoids hinge wear caused by force concentration, enhances the stability and safety of the door assembly, effectively improves the convenience of opening and closing the door assembly, and allows users to operate the door assembly more easily, reducing inconvenience during use.

[0022] (2) The door hinge device described in this utility model adopts an arc-shaped limit hook, which can better disperse the force applied to the hook, enhance the fixing effect of the tension spring, and when the door assembly is closed, the design of the locking groove ensures the tight connection between the door and the main structure, improves the sealing performance, reduces noise, improves the overall performance of the door, and extends the service life of the hinge.

[0023] (3) The door hinge device described in this utility model improves the fixed connection between the hinge seat and the connecting rod, thereby enhancing the structural stability of the entire hinge device. This allows the door assembly to maintain a good working condition after long-term use, reducing maintenance costs and improving the user experience, making it a more reliable and efficient door hinge device.

[0024] The second objective of this application is to disclose a cooking apparatus having a door hinge device as described above.

[0025] Furthermore, the hinge device for opening and closing the cooking device is located on the door assembly and the main structure near the lower end, thereby forming a pull-down door structure.

[0026] The cooking device and the aforementioned door hinge device have the same advantages over the prior art, and will not be repeated here. Attached Figure Description

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the opening and closing door hinge device of this utility model assembled on the cooking device in the closed state;

[0029] Figure 2 for Figure 1 The diagram shows a first sectional view of the structure.

[0030] Figure 3 for Figure 1 The diagram shows a second sectional view of the structure.

[0031] Figure 4 As shown in the structure third cross-sectional structure schematic view; Figure 1

[0032] Figure 5 As shown in the structure third cross-sectional structure schematic view;

[0033] Figure 6 As shown in the structure third cross-sectional structure schematic view; Figure 5

[0034] Figure 7 As shown in the structure third cross-sectional structure schematic view; Figure 5

[0035] Legend:

[0036] 100-main structure;200-door assembly;300-hinge device;1-hinge seat;101-first limit hook;2-hinge;201-second limit hook;202-third limit hook;203-first connecting part;204-second connecting part;3-tension spring;4-roller;5-first rotating shaft;6-front plate;7-second rotating shaft;8-link;9-clamping groove. DETAILED DESCRIPTION

[0037] In order to make the technical means and achieve the purpose and effect of the utility model easy to understand, the embodiments of the utility model are described in detail below in combination with specific drawings.

[0038] It should be noted that all the directional and positional indications in the utility model, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "top", "low", "transverse", "longitudinal", "center", etc. are used to explain the relative positional relationship, connection condition, etc. between the components in a certain state (as shown in the drawings), and are only for the convenience of describing the utility model, and do not require the utility model to be constructed and operated in a particular orientation, so it cannot be understood as a limitation of the utility model. In addition, the description of "first", "second", etc. in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features.

[0039] ​​​In the description of the utility model, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected;Can be mechanical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] As shown in Figures 1 to 7 The utility model discloses a switch door hinge device, including:

[0042] Connecting rod 8, one end with main body structure 100 direct or indirect fixed connection, the other end passes through second pivot 7 and door assembly 200 hinged connection, connecting rod 8 is used for door assembly 200 relative second pivot 7 line overturning;

[0043] Hinge 2, one end passes through tension spring 3 and main body structure 100 direct or indirect connection, the other end passes through first pivot 5 and door assembly 200 hinged connection, set up gyro wheel 4 above hinge 2, gyro wheel 4 can rotate along the top of hinge 2, hinge 2 is used for door assembly 200 when closing door receives tension and close to the front panel 6 of main body structure 100.

[0044] The application discloses a switch door hinge device, one end of a connecting rod 8 in the device is fixedly connected to a main body structure 100, and the other end is connected with a door assembly 200 through a second rotating shaft 7, so that the door assembly 200 can be smoothly turned around the second rotating shaft 7, and the function of opening and closing the door is easily realized; meanwhile, one end of a hinge 2 in the device is connected with the main body structure 100 through a tension spring 3, and the other end is connected with the door assembly 200 through a first rotating shaft 5; when the door assembly 200 is closed, the tension provided by the tension spring 3 acts on the hinge 2, so that the door assembly 200 is tightly attached to a front plate 6 of the main body structure 100, thereby ensuring the stable closing of the door; a roller 4 arranged above the hinge 2 serves as a sliding support of the hinge, and during the opening or closing of the door assembly 200, the roller 4 can be smoothly rotated along the track of the hinge 2, so that the frictional resistance of the hinge during the movement is greatly reduced, and the opening and closing of the door assembly 200 is more smooth and free.

[0045] The switch door hinge device disclosed by the application makes the turning of the door assembly 200 more flexible and free through the cooperation of the connecting rod 8 and the hinge 2, the tension provided by the tension spring 3 ensures the stable closing of the door assembly 200, the shaking or gap of the door assembly 200 during the closing is avoided, the setting of the roller 4 greatly reduces the friction during the movement of the hinge, prolongs the service life of the hinge, simultaneously reduces the operation strength during the opening and closing of the door, so that the user is more convenient and comfortable in daily use, the use experience of the door assembly 200 is improved, and the stability and durability of the overall structure are enhanced.

[0046] As a preferred example of the application, a hinge seat 1 is arranged on the main body structure 100, the connecting rod 8 is fixedly connected with the hinge seat 1, and the hinge 2 is connected with the hinge seat 1 through the tension spring 3. The hinge seat 1 arranged on the main body structure 100 provides a stable connection basis for the whole device, one end of the connecting rod 8 is fixedly connected with the hinge seat 1, so that the stability and accuracy of the door assembly 200 during the opening and closing are ensured, and the hinge 2 is connected with the hinge seat 1 through the tension spring 3, so that the tension spring 3 can continuously provide tension; when the door assembly 200 is closed, the elastic force of the tension spring 3 tightly pulls the door assembly 200 to the front plate 6 of the main body structure 100, so that the user only needs to overcome the tension of the tension spring 3 when opening the door assembly 200, and the door assembly 200 can be easily opened, and the elastic force of the tension spring 3 can pull the door assembly 200 back to the tightly closed state when the door assembly 200 is closed.

[0047] The setting on one hand enhances the connection strength of the connecting rod 8 and the hinge 2 with the main body structure 100, so that the device is more stable and reliable when bearing external force and impact, and improves the overall durability, at the same time, the hinge seat 1 provides a stable mounting position for the tension spring 3, ensuring that the tension of the tension spring 3 can uniformly and continuously act on the door assembly 200, which not only improves the sealing performance of the door assembly 200, but also enhances the stability of the door assembly 200 when closing, avoiding the shaking and gap of the door assembly 200 during closing. In addition, the introduction of the hinge seat 1 simplifies the installation and debugging process of the device, so that the user can more conveniently and quickly complete the assembly and debugging work.

[0048] As a preferred example of the present application, the hinge 2 is provided with a clamping groove 9, which is used to clamp the roller 4 in the closed state of the door assembly 200. In the example of the present application, by providing the clamping groove 9 on the hinge 2, the stable fixation of the door assembly 200 in the closed state is realized, when the door assembly 200 is closed, the roller 4 falls into the clamping groove 9, and this clamping cooperation makes the roller can be effectively kept in the groove, thereby forming a stable support point, not only ensuring the stability of the door assembly 200 in the closed state, but also significantly reducing the tension required to be borne by the tension spring 3, the tension spring 3 only needs to provide moderate tension to ensure the sealing of the door, such design effectively reduces the burden of the tension spring, reduces the fatigue and damage caused by long-term bearing of excessive tension, prolongs the service life of the tension spring, and further improves the reliability and durability of the whole opening and closing door hinge device.

[0049] As a preferred example of the present application, the clamping groove 9 is arc-shaped. This setting further optimizes the clamping groove 9 to an arc-shaped clamping structure, which greatly improves the stability of the door assembly 200 in the closed state through close cooperation with the roller 4, effectively prevents the shaking and accidental opening of the door assembly 200 caused by external force, thereby enhancing the safety and reliability of the device; at the same time, the arc-shaped design makes the door assembly 200 more smoothly slide into the clamping groove 9 when closing, reduces the impact force when closing, avoids the noise and wear caused by excessive impact force, and improves the user's experience.

[0050] As a preferred example of the present application, the hinge 2 comprises a first connecting portion 203, a second connecting portion 204, the catch slot 9 is arranged at the connecting portion of the first connecting portion 203 and the second connecting portion 204, and the sectional height of the first connecting portion 203 in the vertical direction is smaller than the sectional height of the second connecting portion 204 in the vertical direction. By designing the hinge 2 as a first connecting portion 203 and a second connecting portion 204 with different heights, when the door assembly 200 is closed, the roller 4 slides along the design of the hinge 2 and finally locks into the catch slot 9 arranged at the connecting portion of the two portions. The lower height of the first connecting portion 203 provides a gradually decreasing sliding path for the roller 4, so that the roller can more smoothly slide into the catch slot 9, and the higher height of the second connecting portion 204 provides sufficient depth for the catch slot 9, ensuring that the roller 4 can be securely locked therein, thereby effectively reducing the friction and resistance when closing the door, making the closing process more stable. And because the roller 4 is well fixed in the catch slot 9, the stability of the door assembly 200 in the closed state is also significantly improved.

[0051] As a preferred example of the present application, a third limiting hook 202 is arranged on the second connecting portion 204, a first limiting hook 101 is arranged on the hinge seat 1, and the two ends of the tension spring 3 are fixed in the first limiting hook 101 and the third limiting hook 202, respectively. As a preferred example, the third limiting hook 202 and the first limiting hook 101 are arranged at different positions in the vertical direction, and when the door assembly 200 is opened in a downward manner, the arrangement height of the first limiting hook 101 is higher than that of the third limiting hook 202. This arrangement is used to achieve the connection and fixation of the tension spring 3 by arranging the third limiting hook 202 on the second connecting portion 204 and the first limiting hook 101 on the hinge seat 1. When the door assembly 200 is in a closed state, the tension spring 3 is in a natural stretched state, which provides the necessary pre-tightening force for the door assembly 200, ensuring the stability of the door assembly 200 when closing, preventing the door assembly 200 from loosening due to external forces, and improving the sound insulation and heat preservation performance of the door assembly 200. At the same time, this design also improves the convenience of opening and closing the door assembly 200, and users only need to exert a small external force to overcome the tension of the tension spring 3 to open the door, greatly improving the user experience, especially in frequently used situations, users can feel more convenience. In addition, as a consumable part, the replacement and maintenance of the tension spring 3 also become more simple and convenient, and only need to disengage the fixed hook portions at both ends from the first limiting hook 101 and the third limiting hook 202 to replace them, reducing the maintenance cost and improving the economic efficiency of use.

[0052] As a preferred example of the present application, the third limiting pull hook 202 is arc-shaped, and the arc of the third limiting pull hook 202 is not less than π; the first limiting pull hook 101 is arc-shaped, and the arc of the first limiting pull hook 101 is not less than π. On the one hand, this setting enhances the stability and durability of the pull hook when bearing tension, and the arc-shaped structure enables the pull hook to better adapt to the movement trajectory of the tension spring 3 during operation, thereby improving the use efficiency of the tension spring and the overall performance of the door assembly 200. On the other hand, the arc-shaped design enables the pull hook to effectively disperse stress when subjected to external force, thereby reducing the risk of damage and ensuring the reliability and safety of the door assembly during long-term use.

[0053] As a preferred example of the present application, a second limiting pull hook 201 is provided on the first connecting portion 203, which can be hooked on the first rotating shaft 5. In the example of the present application, an avoiding slot is provided on the front plate 6 of the main body structure 100, and the first connecting portion 203 can pass through the avoiding slot on the front plate 6 and be on the frame of the door assembly 200. This setting enhances the stability of the door assembly 200 during opening and closing through the hooking design of the second limiting pull hook 201. At the same time, the design of the avoiding slot on the front plate 6 enables the first connecting portion 203 to pass through the front plate 6 freely, thereby ensuring the flexibility of the door assembly 200, improving the opening and closing convenience of the door assembly 200, and reducing the inconvenience caused by space limitations. When opening the door assembly 200, the user only needs to push it gently, and the operation can be easily completed, thereby further improving the user experience. In addition, this design also simplifies the installation and maintenance process of the door assembly 200, and the user can easily operate when adjustment or maintenance is needed, thereby reducing the maintenance cost.

[0054] The present application also discloses a cooking device, wherein the opening and closing door hinge device as described in the above embodiments is provided on the cooking device. In the example of the present application, the cooking device can be an electric product such as a microwave oven or a steam oven, and the opening and closing door hinge device as described in the above embodiments is provided on the door assembly 200 and the main body structure 100 near the lower end, thereby forming a lower-pull opening and closing door hinge device 300, which belongs to a new extension technical solution of the opening and closing door hinge structure used in microwave ovens, steam ovens and other electric appliances.

[0055] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A door hinge device, characterized in that, include: The connecting rod (8) is directly or indirectly fixedly connected to the main structure (100) at one end, and hinged to the door assembly (200) at the other end through the second rotating shaft (7). The connecting rod (8) is used for the door assembly (200) to rotate relative to the second rotating shaft (7). A hinge (2) is connected directly or indirectly to the main structure (100) at one end via a tension spring (3), and to the door assembly (200) at the other end via a first pivot (5). A roller (4) is provided above the hinge (2), and the roller (4) can rotate along the top of the hinge (2). The hinge (2) is used to be pulled when the door assembly (200) is closed and to be pressed against the front plate (6) of the main structure (100).

2. The door hinge device according to claim 1, characterized in that, A hinge seat (1) is provided on the main structure (100), the connecting rod (8) is fixedly connected to the hinge seat (1), and the hinge (2) is connected to the hinge seat (1) through a tension spring (3).

3. The door hinge device according to claim 2, characterized in that, A locking groove (9) is provided on the hinge (2), and the locking groove (9) is used to engage the roller (4) when the door assembly (200) is closed.

4. The door hinge device according to claim 3, characterized in that, The slot (9) is arc-shaped.

5. The door hinge device according to claim 3 or 4, characterized in that, The hinge (2) includes a first connecting part (203) and a second connecting part (204). The locking groove (9) is disposed at the connection between the first connecting part (203) and the second connecting part (204). The vertical cross-sectional height of the first connecting part (203) is less than the vertical cross-sectional height of the second connecting part (204).

6. The door hinge device according to claim 5, characterized in that, A third limiting hook (202) is provided on the second connecting part (204), and a first limiting hook (101) is provided on the hinge seat (1). The two ends of the tension spring (3) are respectively fixed in the first limiting hook (101) and the third limiting hook (202).

7. The door hinge device according to claim 6, characterized in that, The third limiting hook (202) is arc-shaped, and the arc of the third limiting hook (202) is not less than π; the first limiting hook (101) is arc-shaped, and the arc of the first limiting hook (101) is not less than π.

8. The door hinge device according to claim 6 or 7, characterized in that, A second limiting hook (201) is provided on the first connecting part (203), and the second limiting hook (201) can be hooked onto the first rotating shaft (5).

9. A cooking apparatus, characterized in that, The cooking device is provided with a door hinge device as described in any one of claims 1 to 8.

10. The cooking apparatus according to claim 9, characterized in that, The hinge device for opening and closing the cooking device is located on the door assembly (200) and the main structure (100) near the lower end, thereby forming a pull-down opening and closing door structure.

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