An oven door opening and closing device

Abstract

The utility model provides a kind of oven switch door device, to solve the problem that existing technology exists in the switch door device on oven, more parts, complex structure and cannot provide the problem of sustained door closing force after door body is closed.A kind of oven switch door device, comprising: cabinet, is equipped with two oppositely arranged clamping parts, two described clamping parts are equipped with clamping space and for the import and export of protruding part into the import and export of described clamping space;Door body, the door body is rotatably connected with the cabinet by the linkage mechanism;Protruding part is equipped on the linkage mechanism;When driving the door body to close, the door body is driven by the linkage mechanism and the protruding part enters the clamping space by the import and export, two described clamping parts are mutually close to each other and hold the protruding part by the elastic reset component and make the door body keep in closed position.After closing door, elastic reset component drives two clamping parts and holds protruding part, provides sustained door closing force.

Description

Technical Field

[0001] This utility model belongs to the technical field of kitchen cooking utensils, specifically relating to an oven door opening and closing device. Background Technology

[0002] In existing oven designs, the door is typically connected to the oven body via a hinge on one side. To achieve locking after closing, an additional locking mechanism, such as a latch or bolt, is often required on the other side of the door. While this type of separate lock provides locking functionality, it increases the number of parts, complicates the structure, and raises manufacturing costs and potential malfunctions. Furthermore, relying solely on hinge rotation without a dedicated locking mechanism results in insufficient retaining force after the door closes, making it susceptible to gaps caused by internal heat pressure or external forces, leading to poor sealing and heat loss. Therefore, an oven door opening and closing device that simplifies the structure while ensuring reliable door locking is needed. Utility Model Content

[0003] This invention provides an oven door opening and closing device, which aims to solve the problems of existing oven door opening and closing devices having many parts, complex structure, and inability to provide continuous closing force after the door is closed.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An oven door opening and closing device includes:

[0006] The housing has two opposing clamping parts, a clamping space between the two clamping parts, and an inlet and outlet for entering and exiting the clamping space;

[0007] A door body, wherein a linkage mechanism is provided between the door body and the housing body, and the door body is rotatably connected to the housing body through the linkage mechanism; the linkage mechanism is provided with a protrusion; and,

[0008] An elastic reset assembly is used to drive the two clamping parts to move closer together.

[0009] When the door is driven to close, the door, through the linkage mechanism, drives the protrusion into the clamping space via the inlet and outlet. Under the action of the elastic reset component, the two clamping parts move closer together to clamp the protrusion and keep the door in the closed position. When the door is driven to open, the door, through the linkage mechanism, drives the protrusion to overcome the force of the elastic reset component and disengage from the clamping space via the inlet and outlet.

[0010] A further solution: The linkage mechanism includes:

[0011] A first connecting frame, one side of which is connected to the door body, and the other side of which is rotatably connected to the housing body; and,

[0012] The second connecting frame has one side connected to the first connecting frame, and the other side of the second connecting frame is provided with the protrusion.

[0013] Based on the above technical solution: by setting a first connecting frame to realize the rotational connection between the door and the box, the second connecting frame is connected to the first connecting frame and the protrusion is set on the second connecting frame. This double-link structure is convenient to be flexibly arranged according to the installation space; and during the opening and closing of the door, the protrusion can also move according to the preset movement trajectory of entering and exiting the clamping space, so as to more accurately and reliably cooperate with the two clamping parts to complete locking or releasing.

[0014] A further embodiment: The first connecting frame includes:

[0015] A door connecting part, used for fixed connection with the door body;

[0016] At least one drive arm, one end of which is connected to the door connecting part, and the other end is rotatably connected to the housing via a first rotating shaft; and...

[0017] At least one connecting arm, one end of which is connected to the drive arm and the other end of which is connected to the second connecting frame.

[0018] Based on the above technical solution, the first connecting frame is specifically constructed to include a door body connecting part, a drive arm, and a connecting arm. This multi-arm structure effectively enhances the overall structural rigidity and bending and torsional resistance of the first connecting frame, making it more stable and less prone to deformation when transmitting the door opening and closing torque, thus ensuring the accuracy and reliability of motion transmission.

[0019] A further embodiment: the drive arm is arc-shaped, and when the door is closed, the arc-shaped drive arm gradually moves downward and bulges out in an arc shape towards one side of the box.

[0020] Based on the above technical solution: the drive arm rises in an arc shape to one side of the box. This arrangement makes it easier to install the first connecting frame using the space between the door and the box, resulting in a more compact and reasonable design.

[0021] A further embodiment: There are two drive arms, which are arranged side by side on the left and right sides of the door connection part. The housing is provided with two clearance holes, which respectively cooperate with the two drive arms.

[0022] There are two connecting arms. The ends of the two connecting arms that are far apart from each other are respectively connected to the two driving arms, and the ends of the two connecting arms that are close to each other are both connected to the second connecting frame.

[0023] Based on the above technical solution, two symmetrical drive arms and two connecting arms are set up. This double-sided symmetrical support structure ensures that the first connecting frame is subjected to balanced forces during movement, operates smoothly, and effectively prevents skewing, jamming, or uneven wear that may be caused by unilateral force, thereby improving the stability and durability of the operation.

[0024] A further solution: the door connecting part, the drive arm, and the connecting arm are integrally formed.

[0025] Based on the above technical solution: the door body connecting part, drive arm, and connecting arm are integrally molded. The integrated structure eliminates the connection gaps and assembly errors between components, ensuring that the first connecting frame has higher overall strength, dimensional accuracy, and motion consistency, further improving the reliability of the device and simplifying the production and assembly process.

[0026] A further solution: The second connecting frame is curved upwards.

[0027] Based on the above technical solution: the second connecting frame is designed as an upward-curving arc. This arc design not only allows it to better adapt to and avoid other components below during movement and optimize the spatial layout, but also, during the opening and closing of the door, the first connecting frame drives the protrusion on the second connecting frame to move in an arc trajectory, which helps guide the protrusion downward into the clamping space or upward out of the clamping space.

[0028] A further embodiment: The lower ends of both clamping parts are rotatably connected to the housing via a second rotating shaft, and the upper ends of both clamping parts are provided with bending parts, which are bent in a direction away from each other.

[0029] Based on the above technical solution: the above configuration enables the two clamping parts to open and close relative to each other through rotation, which is easy to assemble.

[0030] A further embodiment: The elastic reset assembly includes two springs, which are respectively disposed between the two bent portions and the housing.

[0031] Based on the above technical solution: the setting of the two springs ensures that the two clamping parts can clamp the protrusion simultaneously and symmetrically, and the clamping force is uniform and stable, avoiding uneven load or asynchronous operation caused by uneven force.

[0032] A further embodiment: Each of the clamping parts is provided with an arc-shaped wrapping part, and two arc-shaped wrapping parts are arranged opposite to each other, with the clamping space located between the two arc-shaped wrapping parts; each arc-shaped wrapping part is provided with a guide part on its upper side for the protrusion to slide in and out of the clamping space, and the inlet and outlet are located between the two guide parts.

[0033] Based on the above technical solution: an arc-shaped wrapping part and a guide part are provided on each clamping part. The arc-shaped wrapping part increases the contact area with the protrusion, making the clamping force distribution more uniform and the locking more secure; the guide part provides a smooth inclined surface to guide the protrusion in and out, allowing it to easily open the clamping part and slide in or out, significantly reducing operating resistance, reducing component wear, and improving operating smoothness.

[0034] A further solution: a micro switch is provided inside the housing, and a switch triggering part is provided on the linkage mechanism; when the door is driven to close, the switch triggering part triggers the micro switch; when the door is driven to open, the switch triggering part disengages from the micro switch.

[0035] Based on the above technical solution: by setting a switch triggering part on the linkage mechanism and a micro switch on the housing, the switch triggering part can trigger the micro switch when the door is closed, and the switch triggering part disengages from the micro switch when the door is opened, thereby realizing power cut-off when the door is opened, which increases the safety of the equipment.

[0036] The beneficial effects of this utility model are as follows:

[0037] In this invention, the door body is rotatably connected to the housing via a linkage mechanism, and a protrusion is provided on the linkage mechanism. During the opening and closing action, the protrusion moves along with the linkage mechanism as part of the transmission chain. When the door reaches the closed position, the protrusion directly acts as the clamped object, being clamped and locked by two clamping parts driven by an elastic reset component. This means that when the door closes, the linkage mechanism drives the protrusion to move, causing the protrusion to automatically open the two clamping parts and enter the clamping space. Then, under the action of the elastic reset component, the two clamping parts automatically return to their original position, clamping the protrusion, thus providing an active and continuous elastic holding force for the door body, effectively ensuring the door's closure and sealing. This structural design not only enables the door to remain more stable in the closed state after closing, but also simplifies the structure, reduces the total number of parts, and achieves structural simplification and cost reduction.

[0038] In this invention, when the user opens or closes the door, that is, during the process of the protrusion entering or leaving the clamping space, the user must overcome the restoring force of the elastic reset component. This controllable resistance provides clear tactile feedback for the user's door opening and closing operation. In addition, the restoring force provided by the elastic reset component can also play a certain buffering role during the door opening and closing process, avoiding direct impact between the door and the housing, reducing noise, and improving the user experience. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a first-view cross-sectional structural diagram of an oven door opening and closing device according to the present invention.

[0041] Figure 2 yes Figure 1 A magnified structural diagram at point A.

[0042] Figure 3 This is a cross-sectional structural diagram of the door and the box from a second perspective.

[0043] Figure 4 This is a structural diagram of the linkage mechanism and clamping part.

[0044] Explanation of the labels in the diagram:

[0045] 1-Box body; 11-Drive arm mounting base; 111-First rotating shaft; 12-Clamping part mounting base; 121-Second rotating shaft; 122-First spring seat; 13-Leaving hole; 14-Micro switch; 2-Door body; 3-Clamping part; 31-Arc-shaped wrapping part; 32-Guide part; 33-Bending part; 331-First spring seat; 4-Linkage mechanism; 41-First connecting frame; 411-Door body connecting part; 412-Drive arm; 413-Connecting arm; 42-Second connecting frame; 421-Protrusion; 5-Spring. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0047] like Figures 1 to 4 As shown, this embodiment provides an oven door opening and closing device, including:

[0048] The housing 1 is provided with two clamping parts 3 arranged opposite to each other, and a clamping space and an inlet and outlet for entering and exiting the clamping space are provided between the two clamping parts 3;

[0049] Door 2, with a linkage mechanism 4 between door 2 and box 1, and door 2 rotatably connected to box 1 via linkage mechanism 4; linkage mechanism 4 has a protrusion 421; and,

[0050] An elastic reset assembly is used to drive the two clamping parts 3 to move closer together;

[0051] When the door 2 is driven to close, the door 2, through the linkage mechanism 4, drives the protrusion 421 to enter the clamping space through the inlet and outlet. Under the action of the elastic reset component, the two clamping parts 3 move closer to each other to clamp the protrusion 421 and keep the door 2 in the closed position. When the door 2 is driven to open, the door 2, through the linkage mechanism 4, drives the protrusion 421 to overcome the force of the elastic reset component and disengage from the clamping space through the inlet and outlet.

[0052] In this embodiment, the door 2 is located on the front side of the box 1, and the linkage mechanism 4 is located between the lower side of the door 2 and the lower side of the box 1. When the door is opened, the door 2 rotates forward and downward relative to the box 1 to open.

[0053] In some specific implementations, such as Figures 1 to 4 As shown, the linkage mechanism 4 includes:

[0054] A first connecting frame 41, one side of which is fixedly connected to the door 2, and the other side of which is rotatably connected to the housing 1; and,

[0055] The second connecting frame 42 is connected to the first connecting frame 41 on one side, which can be a fixed connection or an integral molding. The protrusion 421 is provided on the other side of the second connecting frame 42.

[0056] In a preferred embodiment, the first connecting frame 41 includes:

[0057] The door connecting part 411 is used to fix the door body 2, specifically by means of screws or other means.

[0058] At least one drive arm 412, one end of which is connected to the door connecting part 411, specifically by a fixed connection or integral molding, and the other end is rotatably connected to the housing 1 via a first rotating shaft 111; and

[0059] At least one connecting arm 413, one end of which is connected to the drive arm 412 and the other end of which is connected to the second connecting frame 42.

[0060] In a preferred configuration, there are two drive arms 412 arranged side by side on the left and right sides of the door connecting part 411. To facilitate the rotational connection between the drive arms 412 and the inside of the housing 1, the housing 1 is provided with two clearance holes 13. The two clearance holes 13 respectively cooperate with the two drive arms 412, so that during the opening and closing of the door, the two clearance holes 13 are used for the two drive arms 412 to swing back and forth.

[0061] There are two connecting arms 413. The ends of the two connecting arms 413 that are far apart from each other are connected to the two driving arms 412, while the ends of the two connecting arms 413 that are close together are connected to the second connecting frame 42. Specifically, each connecting arm 413 is L-shaped. One arm of the L-shaped connecting arm 413 extends in the same direction as the door connecting part 411 and is integrally formed with the corresponding driving arm 412. The other arm of the L-shaped connecting arm 413 is fixedly connected to the second connecting frame 42, and the second connecting frame 42 is clamped between the two arms. The design of the two driving arms 412 and the two connecting arms 413 ensures more balanced force distribution during door opening and closing.

[0062] The housing 1 is provided with a drive arm mounting base 11, and each drive arm 412 is rotatably connected to the drive arm mounting base 11 via a first rotating shaft 111.

[0063] To facilitate the installation of the first connecting bracket 41, the drive arm 412 is arc-shaped. When the door 2 is closed, the arc-shaped drive arm 412 gradually curves downwards and towards the side of the housing 1. When the door 2 is fully open, the drive arm 412 curves upwards, thus enabling smooth door opening and closing operations and preventing the drive arm 412 from bending under stress.

[0064] For ease of installation, the door connecting part 411, the drive arm 412, and the connecting arm 413 are preferably integrally formed. This ensures that the first connecting frame 41 has higher overall strength, further improves the reliability of the device, and simplifies the production and assembly process.

[0065] In some specific implementations, such as Figures 1 to 4 As shown, in order to facilitate the entry and exit of the protrusion 421 into the clamping space, the second connecting frame 42 is arc-shaped and raised upward. Since the protrusion 421 is located at the end of the second connecting frame 42 away from the first connecting frame 41, during the opening and closing of the door 2, the first connecting frame 41 rotates relative to the box 1. The door 2 drives the protrusion 421 on the second connecting frame 42 to move in an arc-shaped trajectory through the first connecting frame 41, which helps guide the protrusion 421 downward into the clamping space or upward out of the clamping space.

[0066] In some specific implementations, such as Figures 1 to 4 As shown, the lower ends of both clamping parts 3 are rotatably connected to the housing 1 via a second rotating shaft 121, and the upper ends of both clamping parts 3 are provided with bending parts 33, which are bent in a direction away from each other. The elastic reset assembly includes two springs 5, which are respectively disposed between the two bending parts 33 and the housing 1. In a specific structure, the housing 1 is provided with a clamping part mounting seat 12, and the lower ends of both clamping parts 3 are rotatably connected to the clamping part mounting seat 12 via a second rotating shaft 121. The left and right sides of the clamping part mounting seat 12 are provided with first spring seats 122, and the lower side of each bending part 33 is provided with a second spring seat 5. Each spring 5 is located between its corresponding first spring seat 122 and second spring seat 5. Specifically, the first spring seat 122 is a groove, and the second spring seat 5 is a plug-in post.

[0067] To facilitate the entry and exit of the protrusion 421 into the clamping space, each clamping part 3 is provided with an arc-shaped wrapping part 31. Two arc-shaped wrapping parts 31 are arranged opposite each other, and the clamping space is located between the two arc-shaped wrapping parts 31. The shape of the protrusion 421 is designed to match the clamping space. Each arc-shaped wrapping part 31 has a guide part 32 on its upper side for the protrusion 421 to slide into and out of the clamping space. The inlet and outlet are located between the two guide parts 32. Specifically, the guide part 32 can be designed as a guide slope, so that the protrusion 421 can easily open the two clamping parts 3 and slide into or out of the clamping space, reducing component wear.

[0068] In some specific implementations, such as Figure 3 As shown, to further enhance the safety of door opening and closing operations, a micro switch 14 is provided inside the housing 1, and a switch triggering part is provided on the linkage mechanism 4. Specifically, the switch triggering part can be mounted on the drive arm 412. When the door 2 is driven to close, the switch triggering part triggers the micro switch 14; when the door 2 is driven to open, the switch triggering part disengages from the micro switch 14. This achieves power-off upon door opening, increasing the safety of equipment use.

[0069] Working principle explanation:

[0070] When the door is closed, the door body 2 drives the linkage mechanism 4 to rotate. The linkage mechanism 4 drives the protrusion 421 to move, causing the protrusion 421 to automatically open the two clamping parts 3 and enter the clamping space. Then, under the action of the elastic reset component, the two clamping parts 3 automatically return to their original position and clamp the protrusion 421, thereby providing the door body 2 with an active and continuous elastic holding force, effectively ensuring the closure and sealing of the door body 2. When the door is opened, the door body 2 drives the linkage mechanism 4 to rotate outward, and at the same time, drives the protrusion 421 to open the two clamping parts 3 upward and disengage from the clamping space.

[0071] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. An oven door opening and closing device, characterized in that, include: The housing has two opposing clamping parts, a clamping space between the two clamping parts, and an inlet and outlet for entering and exiting the clamping space; A door body, wherein a linkage mechanism is provided between the door body and the housing body, and the door body is rotatably connected to the housing body through the linkage mechanism; the linkage mechanism is provided with a protrusion; and, An elastic reset assembly is used to drive the two clamping parts to move closer together. When the door is driven to close, the door, through the linkage mechanism, drives the protrusion into the clamping space via the inlet and outlet. Under the action of the elastic reset component, the two clamping parts move closer together to clamp the protrusion and keep the door in the closed position. When the door is driven to open, the door, through the linkage mechanism, drives the protrusion to overcome the force of the elastic reset component and disengage from the clamping space via the inlet and outlet.

2. The oven door opening and closing device according to claim 1, characterized in that, The linkage mechanism includes: A first connecting frame, one side of which is connected to the door body, and the other side of which is rotatably connected to the housing body; and, The second connecting frame has one side connected to the first connecting frame, and the other side of the second connecting frame is provided with the protrusion.

3. The oven door opening and closing device according to claim 2, characterized in that, The first connecting frame includes: A door connecting part, used for fixed connection with the door body; At least one drive arm, one end of which is connected to the door connecting part, and the other end is rotatably connected to the housing via a first rotating shaft; and... At least one connecting arm, one end of which is connected to the drive arm and the other end of which is connected to the second connecting frame.

4. The oven door opening and closing device according to claim 3, characterized in that, The drive arm is arc-shaped, and when the door is closed, the arc-shaped drive arm gradually moves downward and bulges out in an arc shape towards one side of the box.

5. The oven door opening and closing device according to claim 3, characterized in that, There are two drive arms, which are arranged side by side on the left and right sides of the door connection part. The box body is provided with two clearance holes, which respectively cooperate with the two drive arms. There are two connecting arms. The ends of the two connecting arms that are far apart from each other are respectively connected to the two driving arms, and the ends of the two connecting arms that are close to each other are both connected to the second connecting frame.

6. The oven door opening and closing device according to claim 3, characterized in that, The door body connecting part, the drive arm and the connecting arm are integrally formed.

7. The oven door opening and closing device according to claim 2, characterized in that, The second connecting frame is curved and bulges upward.

8. The oven door opening and closing device according to claim 1, characterized in that, The lower ends of both clamping parts are rotatably connected to the housing via a second rotating shaft, and the upper ends of both clamping parts are provided with bending parts, which are bent in a direction away from each other.

9. An oven door opening and closing device according to claim 8, characterized in that, The elastic reset assembly includes two springs, which are respectively disposed between the two bent portions and the housing.

10. An oven door opening and closing device according to claim 1, characterized in that, Each of the clamping parts is provided with an arc-shaped wrapping part, and two arc-shaped wrapping parts are arranged opposite to each other. The clamping space is located between the two arc-shaped wrapping parts. Each arc-shaped wrapping part is provided with a guide part on its upper side for the protrusion to slide in and out of the clamping space. The inlet and outlet are located between the two guide parts.

11. An oven door opening and closing device according to claim 1, characterized in that, The box is equipped with a micro switch, and the linkage mechanism is equipped with a switch triggering part; when the door is driven to close, the switch triggering part triggers the micro switch; when the door is driven to open, the switch triggering part disengages from the micro switch.

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