Door assembly and oven

Abstract

The utility model discloses a door body subassembly and oven, door body subassembly is installed on the box, include: lower door body, the lower end of lower door body is hinged with the box, is in the lower half of opening or closing the front side opening of box, upper door body is used for opening or closing the upper half of front side opening of box, and the first end of connecting arm stretches into the inner chamber, and the first end of connecting arm is hinged with the box, and the second end of connecting arm is connected with upper door body, and connecting arm has first station and second station, wherein, first station is that connecting arm is located in the inner chamber, and upper door body closes the upper half of front side opening of box, second station is that the part of connecting arm stretches out the outside of box, and upper door body is located above the box, and the opening angle of upper door body is A, A is 180 DEG. It makes the opening angle of upper door body increase, avoids hindering taking and placing articles, and simultaneously, still makes upper door body not occupy the front side space of box when completely opening, to can improve the convenience and operation experience of use.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a door assembly and an oven. Background Technology

[0002] Currently, most ovens on the market use a conventional bottom-opening design, which requires a significant amount of front space during use, making operation inconvenient. This is especially true as oven capacity increases, further increasing the required front space and diminishing the user experience.

[0003] To address this issue, Chinese utility model patent CN204467852U proposes a novel oven structure, comprising a body, an upper door, and a lower door. The body consists of an inner liner and an outer shell, with an opening and a surrounding door frame on the front of the inner liner. The upper door is hinged to an upper door strip on the door frame, used to open or close the upper part of the opening; the lower door is hinged to the lower door strip, responsible for opening and closing the lower part of the opening. While this design reduces the space required in front of the oven to some extent, the hinged upper door to the lower door strip limits its opening angle (<180°), thus affecting ease of use and user experience. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, this utility model provides a door assembly and an oven.

[0005] This utility model is achieved through the following technical solution:

[0006] In a first aspect, this utility model provides a door assembly, which is installed on a housing to open or close the front opening of the housing. The housing has an inner cavity communicating with the front opening, comprising:

[0007] The lower door is hinged to the box body at its lower end and is used to open or close the lower half of the front opening of the box body.

[0008] Upper door body, the upper half of which is used to open or close the front opening of the housing; and

[0009] A connecting arm, the first end of which extends into the inner cavity and is hinged to the housing, and the second end of which is connected to the upper door body. The connecting arm has a first working position and a second working position, which can be switched by rotation.

[0010] Wherein, when the connecting arm is in the first working position, the connecting arm is located in the inner cavity, and the upper door closes the upper half of the front opening of the box body;

[0011] When the connecting arm is in the second working position, part of the connecting arm extends out of the box body, the upper door is located above the box body, and the opening angle of the upper door is A, where A≥180°.

[0012] The door assembly of this utility model includes a lower door, an upper door, and a connecting arm. The lower and upper doors independently open and close the lower and upper halves of the front opening of the cabinet, respectively. This split-type door has a smaller height than a one-piece door, effectively saving the front space required for opening the lower and upper doors. Furthermore, since the upper door is hinged to the cabinet via the connecting arm—the first end of the connecting arm extends into the inner cavity of the cabinet and is hinged thereto, while the second end connects to the upper door—this structure allows the upper door to hover above the cabinet when open, with an opening angle greater than or equal to 180°. This increases the opening angle of the upper door, avoiding obstruction of items being placed or removed. Simultaneously, it ensures that the upper door does not occupy the front space of the cabinet when fully open, thereby improving ease of use and user experience.

[0013] In one embodiment, when the connecting arm is in the second working position, the upper door is located directly above the box, that is, the opening angle of the upper door is greater than 180°, so that the upper door can be completely flipped to the top of the box. This not only fully releases the front space of the box, but also minimizes the space occupied by the upper door on the top of the box, which helps to further improve the ease of use and user experience.

[0014] In one embodiment, the second end of the connecting arm is connected to the lower end of the inner sidewall of the upper door. By fixing the second end of the connecting arm to the lower end of the inner sidewall of the upper door, a stable suspension fulcrum can be formed. On the one hand, this ensures that the upper door can smoothly retract and flip to the top of the box when opened, achieving a large opening of over 180°. On the other hand, it also ensures the stability of the upper door during the flipping process and the sealing when closed.

[0015] In one embodiment, the door assembly further includes:

[0016] An elastic component, disposed within the inner cavity, provides an elastic force to the connecting arm, maintaining it in the second position. Thus, when the upper door is opened, the elastic component provides a continuous elastic force to the connecting arm, locking it in the second position and ensuring the upper door is stably maintained at the top of the housing. This prevents the upper door from swaying or closing unnecessarily, improves structural stability, and further enhances ease of use and user experience. Furthermore, because the elastic component provides an elastic force to the connecting arm when the upper door is opened, it provides a continuous pushing force during the opening process, making opening the upper door easier and smoother, further improving operational convenience.

[0017] In one embodiment, the door assembly further includes:

[0018] A connecting shaft, wherein the connecting shaft is disposed in the inner cavity;

[0019] The elastic component includes a spiral portion, a first extension arm, and a second extension arm. The spiral portion is sleeved on the connecting shaft. The first extension arm extends from a first end of the spiral portion along its length and is connected to the housing. The second extension arm extends from a second end of the spiral portion along its length and is connected to the connecting arm. Thus, when the upper door is opened, the connecting arm swings and pulls the second extension arm, causing the spiral portion to twist around the connecting shaft, releasing elastic potential energy and providing the connecting arm with an opening elastic force. When the door is closed, the connecting arm moves in the opposite direction, compressing the second extension arm, causing the spiral portion to twist in the opposite direction to store elastic potential energy, preparing for the next opening.

[0020] In one embodiment, the first end of the connecting arm is rotatably engaged with the connecting shaft to achieve a hinge connection between the first end of the connecting arm and the housing, avoiding the need to add a dedicated hinge structure in other parts of the housing. This not only improves the utilization rate of the connecting shaft but also simplifies the structure and reduces costs.

[0021] In one embodiment, the first end of the connecting arm has a connecting hole, which is arranged around the connecting shaft and is rotatably engaged with the connecting shaft. Thus, during installation, the first end of the connecting arm can be directly fitted onto the connecting shaft to complete the hinge connection between the connecting arm and the housing in one step, eliminating complex debugging and fixing steps. This makes installation simple and convenient, improving installation efficiency.

[0022] In one embodiment, the connecting arm comprises a main arm portion, a first connecting portion, and a second connecting portion. The first and second connecting portions are located at opposite ends of the main arm portion along its length. The end of the first connecting portion away from the main arm portion is hinged to the housing, and the end of the second connecting portion away from the main arm portion is connected to the upper door. That is, the connecting arm has a three-section structure. The first connecting portion is responsible for hinged to the housing, ensuring that the upper door can rotate smoothly around a defined axis, resulting in natural and smooth opening and closing movements. The second connecting portion is responsible for connecting to the door. The main arm portion connects the first and second connecting portions, serving as the main load-bearing structure to achieve uniform force transmission to the upper door. This ensures that the entire connecting arm experiences clear force distribution during the opening and closing of the upper door, operates smoothly, and is not easily deformed or shaken.

[0023] In one embodiment, the end of the first connecting portion away from the main arm portion is inclined toward the direction of the second connecting portion;

[0024] The end of the second connecting part away from the main arm is inclined in a direction opposite to the first connecting part. Because the first connecting part is inclined inwards, the rotation axis of the connecting arm can be closer to the middle of the connecting arm, resulting in a smaller overall projected area and a more compact structure, thus reducing the space occupied in the internal cavity. Furthermore, because the second connecting part is inclined outwards, it provides an outward displacement for the upper door when it opens, effectively ensuring that the upper door will not collide or rub against the cabinet or other components (such as a nearby cabinet or another door) during opening. In addition, since the upper door moves outwards through the inclined second connecting part at the initial stage of opening, it is no longer parallel to the cabinet, allowing the upper door to achieve a larger opening angle without increasing the length of the connecting arm, making it easier for users to retrieve and place items.

[0025] Secondly, this utility model provides an oven, including the aforementioned door assembly.

[0026] This oven utilizes the aforementioned door assembly, including a lower door, an upper door, and a connecting arm. The lower and upper doors independently open and close the lower and upper halves of the front opening of the oven body, respectively. This split-type door design is smaller in height than a single-piece door, effectively saving the front space required for opening the lower and upper doors. Furthermore, the upper door is hinged to the oven body via the connecting arm: the first end of the connecting arm extends into the oven's interior cavity and is hinged thereto, while the second end connects to the upper door. This structure allows the upper door to hover above the oven body when open, with an opening angle greater than or equal to 180°. This increases the opening angle of the upper door, preventing obstruction of loading and unloading items. Simultaneously, it ensures that the upper door does not occupy the front space of the oven body when fully open, thereby improving ease of use and user experience.

[0027] The beneficial effects of this utility model are:

[0028] The door assembly of this utility model includes a lower door, an upper door, and a connecting arm. The lower and upper doors independently open and close the lower and upper halves of the front opening of the cabinet, respectively. This split-type door has a smaller height than a one-piece door, effectively saving the front space required for opening the lower and upper doors. Furthermore, since the upper door is hinged to the cabinet via the connecting arm—the first end of the connecting arm extends into the inner cavity of the cabinet and is hinged thereto, while the second end connects to the upper door—this structure allows the upper door to hover above the cabinet when open, with an opening angle greater than or equal to 180°. This increases the opening angle of the upper door, avoiding obstruction of items being placed or removed. Simultaneously, it ensures that the upper door does not occupy the front space of the cabinet when fully open, thereby improving ease of use and user experience. Attached Figure Description

[0029] Figure 1This is a three-dimensional structural diagram of the oven of this utility model from a first-person perspective, wherein both the lower door and the upper door are in the closed state;

[0030] Figure 2 This is a three-dimensional structural diagram of the oven of this utility model from a first-person perspective, wherein both the lower door and the upper door are in the open state;

[0031] Figure 3 This is a three-dimensional structural diagram of the oven of this utility model from a third-person perspective, wherein both the lower door and the upper door are in the open state;

[0032] Figure 4 This is a third-person view of the internal structure of the oven of this utility model, in which both the lower door and the upper door are in the open state;

[0033] Figure 5 for Figure 4 A magnified view of section A in the image.

[0034] Figure Labels

[0035] 1. Box body; 11. Inner cavity; 2. Lower door body; 21. Lower handle; 3. Upper door body; 31. Upper handle; 4. Connecting arm; 41. Main arm part; 42. First connecting part; 43. Second connecting part; 5. Elastic component; 51. Spiral part; 52. First extension arm; 53. Second extension arm; 6. Connecting shaft. Detailed Implementation

[0036] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and therefore may vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0037] Please see Figures 1-5 This illustration shows a preferred embodiment of a door assembly of the present invention. The door assembly is mounted on a housing 1 to open or close the front opening of the housing 1. The housing 1 has an inner cavity 11 communicating with the front opening. The door assembly includes:

[0038] The lower door 2 is hinged to the lower part of the box 1. The lower door 2 is used to open or close the lower half of the front opening of the box 1.

[0039] Upper door 3, the upper half of which is used to open or close the front opening of the housing 1; and

[0040] Connecting arm 4, the first end of connecting arm 4 extends into the inner cavity 11, the first end of connecting arm 4 is hinged to the box body 1, the second end of connecting arm 4 is connected to the upper door body 3, connecting arm 4 has a first working position and a second working position, and can be switched by rotation;

[0041] When the connecting arm 4 is in the first working position, the connecting arm 4 is located in the inner cavity 11, and the upper door 3 closes the upper half of the front opening of the box 1.

[0042] When the connecting arm 4 is in the second working position, part of the connecting arm 4 extends out of the box 1, the upper door 3 is located above the box 1, and the opening angle of the upper door 3 is A, where A≥180°.

[0043] The door assembly of this utility model includes a lower door 2, an upper door 3, and a connecting arm 4. The lower door 2 and the upper door 3 independently open and close the lower and upper halves of the front opening of the housing 1, respectively. This split-type door has a smaller height than a one-piece door, effectively saving the front space required for opening the lower door 2 and the upper door 3. Furthermore, since the upper door 3 is hinged to the housing 1 via the connecting arm 4: the first end of the connecting arm 4 extends into the inner cavity 11 of the housing 1 and is hinged thereto, while the second end of the connecting arm 4 connects to the upper door 3, this structure allows the upper door 3 to hover above the housing 1 when open, with an opening angle greater than or equal to 180°. This increases the opening angle of the upper door 3, avoiding obstruction of items being placed or removed. Simultaneously, it ensures that the upper door 3 no longer occupies the front space of the housing 1 when fully open, thereby improving ease of use and user experience.

[0044] It is understandable that both the lower door 2 and the upper door 3 are equipped with locking hooks or latches (see existing oven structures for details). When the front opening is closed, the locking hooks or latches of the lower door 2 engage with the corresponding locking grooves or baffles of the oven body 1 (see existing oven structures for details), and the locking hooks or latches of the upper door 3 engage with the corresponding locking grooves or baffles of the oven body 1, thereby ensuring that the lower door 2 and the upper door 3 are reliably closed and guaranteeing airtightness.

[0045] See Figures 3-4 In one embodiment, when the connecting arm 4 is in the second working position, the upper door 3 is located directly above the box 1, that is, the opening angle of the upper door 3 is greater than 180°, so that the upper door 3 can be completely flipped to the top of the box 1. This not only fully releases the front space of the box 1, but also minimizes the occupation of the top space of the box 1 by the upper door 3, which is conducive to further improving the ease of use and user experience.

[0046] See Figures 3-4In one embodiment, the second end of the connecting arm 4 is connected to the lower end of the inner wall of the upper door 3. By fixing the second end of the connecting arm 4 to the lower end of the inner wall of the upper door 3, a stable suspension fulcrum can be formed. On the one hand, this ensures that the upper door 3 can smoothly retract and flip to the top of the box 1 when opened, achieving a large opening of over 180°. On the other hand, it also ensures the stability of the upper door 3 during the flipping process and the sealing when closed.

[0047] See Figures 4-5 In one embodiment, the door assembly further includes:

[0048] The elastic component 5, disposed within the inner cavity 11, provides an elastic force to the connecting arm 4, maintaining it in the second position. Thus, when the upper door 3 is opened, the elastic component 5 provides a continuous elastic force to the connecting arm 4, locking it in the second position and ensuring the upper door 3 is stably maintained on top of the housing 1. This prevents the upper door 3 from wobbling or closing unnecessarily, improves structural stability, and further enhances ease of use and user experience. Furthermore, because the elastic component 5 provides an elastic force to the connecting arm 4 when the upper door 3 is opened, the upper door 3 receives a continuous pushing force during opening, making opening the upper door 3 easier and smoother, further improving operational convenience.

[0049] See Figures 4-5 In one embodiment, the door assembly further includes:

[0050] Connecting shaft 6 is disposed in the inner cavity 11;

[0051] The elastic component 5 is provided with a spiral portion 51, a first extension arm 52, and a second extension arm 53. The spiral portion 51 is sleeved on the connecting shaft 6. The first extension arm 52 extends from the first end of the spiral portion 51 in the longitudinal direction and is connected to the housing 1. The second extension arm 53 extends from the second end of the spiral portion 51 in the longitudinal direction and is connected to the connecting arm 4. Thus, when the upper door 3 is opened, the connecting arm 4 swings and pulls the second extension arm 53, causing the spiral portion 51 to undergo torsional deformation around the connecting shaft 6 to release elastic potential energy, thereby providing the connecting arm 4 with an opening elastic force. When the door is closed, the connecting arm 4 moves in the opposite direction, pressing the second extension arm 53, thereby causing the spiral portion 51 to twist in the opposite direction to store elastic potential energy, preparing for the next opening.

[0052] Specifically, the elastic component 5 can be either a torsion spring or a tension spring.

[0053] See Figures 4-5In one embodiment, the first end of the connecting arm 4 is rotatably coupled to the connecting shaft 6 to achieve the hinge connection between the first end of the connecting arm 4 and the housing 1, avoiding the need to add a dedicated hinge structure to other parts of the housing 1. This not only improves the utilization rate of the connecting shaft 6, but also simplifies the structure and reduces costs.

[0054] See Figure 5 In one embodiment, the first end of the connecting arm 4 has a connecting hole (not shown in the figure), which is arranged around the connecting shaft 6 and is rotatably engaged with the connecting shaft 6. Thus, during installation, the first end of the connecting arm 4 can be directly fitted onto the connecting shaft 6 to complete the hinge connection between the connecting arm 4 and the housing 1 in one step, eliminating the need for complex debugging and fixing steps. The installation operation is simple and convenient, and can improve installation efficiency.

[0055] In one embodiment, the door assembly further includes:

[0056] The bearing (not shown in the figure) has its outer ring fixed to the connecting hole and its inner ring fitted onto the connecting shaft 6. Thus, when the connecting arm 4 swings, the inner ring of the bearing rotates with the connecting arm 4. The addition of this bearing changes the sliding friction between the connecting arm 4 and the connecting shaft 6 into rolling friction, which can reduce rotational resistance and wear, making the upper door 3 open and close more smoothly and more durable.

[0057] See Figure 4 In one embodiment, the connecting arm 4 has a main arm portion 41, a first connecting portion 42, and a second connecting portion 43. The first connecting portion 42 and the second connecting portion 43 are located at opposite ends of the main arm portion 41 along its length. The end of the first connecting portion 42 away from the main arm portion 41 is hinged to the housing 1, and the end of the second connecting portion 43 away from the main arm portion 41 is connected to the upper door 3. That is, the connecting arm 4 has a three-section structure. The first connecting portion 42 is responsible for hinged to the housing 1, ensuring that the upper door 3 can rotate smoothly around a defined axis, resulting in natural and smooth opening and closing movements. The second connecting portion 43 is responsible for connecting to the door. The main arm portion 41 connects the first connecting portion 42 and the second connecting portion 43, serving as the main load-bearing structure to achieve uniform force transmission to the upper door 3. This ensures that the entire connecting arm 4 experiences clear force distribution during the opening and closing of the upper door 3, operates smoothly, and is not easily deformed or shaken.

[0058] See Figure 4 In one embodiment, the end of the first connecting portion 42 away from the main arm portion 41 is inclined toward the direction of the second connecting portion 43, that is, the first connecting portion 42 is inclined inward relative to the main arm portion 41.

[0059] The end of the second connecting part 43 away from the main arm part 41 is inclined in a direction away from the first connecting part 42, that is, the second connecting arm 4 is inclined outward relative to the main arm part 41. Since the first connecting part 42 is inclined inward, the rotation axis of the connecting arm 4 can be closer to the middle of the connecting arm 4, making the overall projected area of ​​the connecting arm 4 smaller and the structure more compact, thereby reducing the space occupied in the inner cavity 11. Since the second connecting part 43 is inclined outward, it is equivalent to providing an outward displacement for the upper door 3 when it is opened, which can effectively ensure that the upper door 3 will not collide or rub against the cabinet 1 or other parts (such as the adjacent cabinet or another door) during the opening process. In addition, since the upper door 3 moves outward through the inclined second connecting part 43 at the beginning of opening, it is no longer parallel to the plane of the cabinet 1. This allows the upper door 3 to achieve a larger opening angle without increasing the length of the connecting arm 4, making it convenient for users to take and put away items.

[0060] See Figure 1 In one embodiment, the outer side wall of the lower door body 2 is provided with a lower handle 21, which is used for the user to grip in order to facilitate the opening and closing of the lower door body 2.

[0061] Similarly, the outer side wall of the upper door body 3 is provided with an upper handle 31, which is used by the user to grip and facilitate the opening and closing of the upper door body 3.

[0062] Of course, in other embodiments, the lower handle 21 or the upper handle 31 can be replaced by a groove or a protrusion, as long as it facilitates the opening and closing of the lower door 2.

[0063] A preferred embodiment of this utility model also provides an oven, including the above-described door assembly.

[0064] The oven of this invention utilizes the aforementioned door assembly, including a lower door 2, an upper door 3, and a connecting arm 4. The lower door 2 and upper door 3 independently open and close the lower and upper halves of the front opening of the oven body 1, respectively. This split door design is smaller in height than a single-piece door, effectively saving the front space required for opening the lower door 2 and upper door 3. Furthermore, the upper door 3 is hinged to the oven body 1 via the connecting arm 4: the first end of the connecting arm 4 extends into the inner cavity 11 of the oven body 1 and is hinged thereto, while the second end of the connecting arm 4 connects to the upper door 3. This structure allows the upper door 3 to hover above the oven body 1 when open, with an opening angle greater than or equal to 180°. This increases the opening angle of the upper door 3, preventing obstruction of loading and unloading items. Simultaneously, it ensures that the upper door 3 does not occupy the front space of the oven body 1 when fully open, thereby improving ease of use and user experience.

[0065] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A door assembly, said door assembly being mounted on a housing (1), characterized in that, The door assembly includes: The lower door (2) is hinged to the box body (1) at its lower end. The lower door (2) is used to open or close the lower half of the front opening of the box body (1). Upper door (3), the upper part of which is used to open or close the front opening of the housing (1); and Connecting arm (4), the first end of the connecting arm (4) extends into the inner cavity (11) of the box (1), and the first end of the connecting arm (4) is hinged to the box (1), the second end of the connecting arm (4) is connected to the upper door (3), the connecting arm (4) has a first working position and a second working position, and can be switched by rotation; When the connecting arm (4) is in the first working position, the connecting arm (4) is located in the inner cavity (11), and the upper door (3) closes the upper half of the front opening of the box body (1); When the connecting arm (4) is in the second working position, part of the connecting arm (4) extends out of the box (1), the upper door (3) is located above the box (1), and the opening angle of the upper door (3) is A, A≥180°.

2. The door assembly according to claim 1, characterized in that, When the connecting arm (4) is in the second working position, the upper door body (3) is located directly above the box body (1).

3. The door assembly according to claim 1, characterized in that, The second end of the connecting arm (4) is connected to the lower end of the inner wall of the upper door body (3).

4. The door assembly according to claim 1, characterized in that, The door assembly also includes: An elastic component (5) is disposed in the inner cavity (11) and is used to provide the connecting arm (4) with an elastic force to maintain the second working position.

5. The door assembly according to claim 4, characterized in that, The door assembly also includes: A connecting shaft (6) is disposed in the inner cavity (11); The elastic component (5) is provided with a spiral part (51), a first extension arm (52) and a second extension arm (53). The spiral part (51) is sleeved on the connecting shaft (6). The first extension arm (52) extends from the first end of the spiral part (51) in the length direction and is connected to the housing (1). The second extension arm (53) extends from the second end of the spiral part (51) in the length direction and is connected to the connecting arm (4).

6. The door assembly according to claim 5, characterized in that, The first end of the connecting arm (4) is rotatably engaged with the connecting shaft (6).

7. The door assembly according to claim 6, characterized in that, The first end of the connecting arm (4) has a connecting hole, which is arranged around the connecting shaft (6) and is rotatably engaged with the connecting shaft (6).

8. The door assembly according to claim 1, characterized in that, The connecting arm (4) is provided with a main arm part (41), a first connecting part (42) and a second connecting part (43). The first connecting part (42) and the second connecting part (43) are respectively located at both ends of the main arm part (41) along its length. The end of the first connecting part (42) away from the main arm part (41) is hinged to the housing (1), and the end of the second connecting part (43) away from the main arm part (41) is connected to the upper door body (3).

9. The door assembly according to claim 8, characterized in that, The end of the first connecting portion (42) away from the main arm portion (41) is inclined toward the second connecting portion (43); The end of the second connecting part (43) away from the main arm part (41) is inclined in a direction away from the first connecting part (42).

10. An oven, characterized in that, Includes the door assembly as described in any one of claims 1-9.

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