An automatically opened upper door hinge device for an oven

Abstract

The present invention provides an automatically opening oven up - turning door hinge device, which includes an up - turning door hinge component for the opening and closing of the door body on the oven body. The up - turning door hinge component includes a four - link transmission component for making the door body turn upwards to open, turn downwards and move linearly to close, and a door self - opening power component for automatically turning the door body upwards under the action of a reset elastic force. The upper and lower positioning ends of the four - link transmission component are respectively pivotally connected to the oven body. The swinging end of the four - link transmission component swings up and down around its upper and lower positioning ends, and the door body is fixed to the swinging end of the four - link transmission component. The rear positioning end of the door self - opening power component is pivotally connected to the oven body, and the elastic power end of the door self - opening power component elastically acts on the four - link transmission component and is slidably connected to the lower positioning end of the four - link transmission component. The structure is compact, the running synchronization of the left and right hinges is improved, the transmission stability is high, and the automatic opening process can be realized, ensuring the use quality of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of the upper flip door of an oven, and specifically relates to an upper flip door hinge device for an oven that can be automatically opened. Background Art

[0002] [[ID=...]]An oven is an electrothermal appliance that uses the radiant heat emitted by electrothermal elements to bake food. According to the different needs of baked food, the temperature of the oven can generally be adjusted within the range of 50 - 250 °C.

[0003] Among them, the existing ovens generally adopt an outward - flipping upper flip door, and the upper flip door is generally installed on the oven body by a hinge assembly. The traditional hinge assembly includes a hinge arm installed inside the oven body and a hinge seat installed on the door body. The hinge arm and the hinge seat are connected by a hinge shaft, and a pull rod is connected between the hinge arm and the hinge seat. A spring is sleeved on the pull rod. Under the action of the pulling force or elastic force of the spring, the oven door is automatically opened and closed by means of torsional pulling.

[0004] However, the hinge assembly with the above - mentioned structure has the following deficiencies in actual application:

[0005] 1) After the oven is used, the temperature inside the oven liner is relatively high. Directly opening the oven to take out food is likely to scald the user with hot air, posing a safety hazard.

[0006] 2) During the use of the oven, the grill may bear an overload of ingredients, resulting in the door body being unable to be opened normally, seriously affecting the normal use of the product.

[0007] 3) Due to the strong elastic force or the large weight of the door, the oven door will collide with the cabinet during opening and closing, generating noise and even causing the hinge to deform, affecting the normal use of the product.

[0008] 4) Due to different opening forces or elastic wear of the spring, it is easy for the hinges on the left and right sides installed inside the oven to move out of sync, affecting the opening and closing effect and even the tightness of the oven door. Summary of the Invention

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an upper flip door hinge device for an oven that can be automatically opened. It has a compact structure, improves the running synchronization of the left and right hinges, has high transmission stability, can achieve automatic opening and closing with good buffering effect, automatically pulls out the baking tray connecting frame during the opening process, has high safety, and ensures that the door body can be opened normally even under the condition of overload, guaranteeing the normal use of the product.

[0010] The object of the present invention is achieved as follows: An upward-opening oven door hinge device includes an upward-opening door hinge component for opening and closing the door body on the baking box body. The upward-opening door hinge component includes a four-bar linkage transmission component for making the door body turn upward to open, turn downward, and linearly move to close, and a door self-opening power component for automatically turning the door body upward under the action of a reset elastic force.

[0011] The upper and lower positioning ends of the four-bar linkage transmission component are respectively axially connected to the baking box body. The swinging end of the four-bar linkage transmission component swings up and down around its upper and lower positioning ends, and the door body is fixed to the swinging end of the four-bar linkage transmission component.

[0012] The rear positioning end of the door self-opening power component is axially connected to the baking box body, and the elastic power end of the door self-opening power component elastically acts on the four-bar linkage transmission component and is slidably connected to the lower positioning end of the four-bar linkage transmission component.

[0013] Optimized according to the above, the four-bar linkage transmission component includes an upper hook swinging link, a straight link, and a lower hook swinging link. The upper positioning end of the upper hook swinging link is axially connected to the baking box body. The upper swinging end of the upper hook swinging link and the lower swinging end of the lower hook swinging link are respectively fixedly connected to the straight link. The straight link is fixedly installed with the door body. The lower positioning end of the lower hook swinging link is located below the upper hook swinging link and is axially connected to the baking box body.

[0014] Optimized according to the above, the lower hook swinging link is provided with a positioning arc portion that can rotate around its lower positioning end and is slidably connected to the door self-opening power component, and a swinging arc portion connected to the straight link. A limiting concave portion for limiting the sliding position of the door self-opening power component is provided between the positioning arc portion and the swinging arc portion.

[0015] Optimized according to the above, the door self-opening power component includes a swinging rod, a spring, and a connecting push rod. The swinging rod is axially connected to the baking box body. The upper swinging end of the swinging rod is buckled with the front elastic end of the spring. A rolling wheel is provided at the lower swinging end of the swinging rod. The rolling wheel is in dynamic frictional connection with the outer edge of the upper positioning end of the four-bar linkage transmission component as the swinging rod swings. The rear elastic end of the spring is buckled on the connecting push rod. The sliding connection end of the connecting push rod is at the end of the baking box body.

[0016] Optimized according to the above, the four-bar linkage transmission components are respectively installed on the left and right sides of the baking box body, and a synchronous link is provided between the four-bar linkage transmission components. The two ends of the synchronous link are respectively connected to the upper positioning ends of the upper hook swinging links of the four-bar linkage transmission components.

[0017] Optimized according to the above, the upward-opening door hinge component further includes a baking tray pushing component, which includes a positioning link and a pushing straight rod. The front end of the pushing straight rod is hinged to the rear end of the positioning link, and the rear end of the pushing straight rod is connected to a baking tray connecting frame. The front end of the positioning link is fixedly connected to the lower hook swing link and rotates with the lower hook swing link, so as to drive the pushing straight rod to move forward or backward in linkage and drive the baking tray connecting frame to move straight forward or backward at the same time.

[0018] Optimized according to the above, a push rod tripping component for automatic tripping is provided between the baking tray connecting frame and the rear end of the baking tray pushing component in the case of overloading of the baking tray connecting frame.

[0019] The push rod tripping component includes a buckling rod and a tripping link. The buckling rod is installed on the baking tray connecting frame. The front end of the tripping link is connected to the pushing straight rod of the baking tray pushing component. The rear end of the tripping link is provided with an elastic buckle assembly for buckling with the buckling rod under the action of elasticity or separating from the buckling rod under the action of overloading.

[0020] Optimized according to the above, the elastic buckle assembly includes a movable buckle clip and an elastic locking column. The fixed end of the movable buckle clip is installed on the tripping link, and the elastic locking column is installed at the buckle port of the movable buckle clip and the elastic end of the elastic locking column is clamped on the bottom surface of the movable buckle clip.

[0021] Optimized according to the above, the push rod tripping component further includes a limiting seat for limiting the outward movement position of the baking tray connecting frame. The limiting seat is fixed on the left and right sides of the baking box body. The front end of the baking tray connecting frame passes through the limiting seat and is connected to the buckling rod. The limiting seat is provided with a limiting groove for positioning connection or separation with the buckling rod.

[0022] Optimized according to the above, the upward-opening door hinge component further includes a buffer damper. The buffer damper is installed in the baking box body, and the push rod of the buffer damper is installed at the connection between the push rod tripping component and the baking tray pushing component.

[0023] The advantages of the present invention are as follows:

[0024] 1) With the structural cooperation of the four-link transmission component and the door self-opening power component, when opening the door body, the elastic reset pulling force of the door self-opening power component acts on the four-link transmission component, prompting the four-link transmission component to drive the door body to automatically turn upward; when closing the door body, under the weight of the door body, the door body makes a downward turning and straight-line moving closing action through the transmission of the four-link transmission component, with high stability, convenient operation, simple use, effectively avoiding air leakage, strengthening the closing tightness, and ensuring the use quality of the oven.

[0025] 2) In the case of overloading of the baking tray connecting frame, the push rod tripping component automatically trips, separating the baking tray pushing component from the baking tray connecting frame, enabling the door body to automatically open under the elastic reset pulling force of the four-bar linkage transmission component. When the baking tray connecting frame is under normal load, the push rod tripping component can be re-latched to ensure the normal use of the oven.

[0026] 3) In cooperation with the buffer damper structure, during the opening process of the door body, it has a damping opening function, with good buffering effect, reducing noise generation, enhancing the stability of operation, and protecting the product.

[0027] 4) Through the structural cooperation between the baking tray pushing component and the four-bar linkage transmission component, during the automatic opening of the hinge, the baking tray connecting frame will be automatically pulled out, effectively avoiding scalding the user by hot air when extracting food and enhancing the safety performance of use.

[0028] 5) By adopting left and right synchronous linkages, the hinge components of the upward-opening doors installed on the left and right sides of the baking box body can move synchronously, enhancing the transmission stability, strengthening the opening and closing effect, and ensuring the tightness of the oven door body. Description of the Drawings

[0029] Attached Figure 1 is a schematic structural diagram of a preferred embodiment of the present invention (removing the local baking box body).

[0030] Attached Figure 2 is a schematic structural diagram of a preferred embodiment of the present invention.

[0031] Attached Figure 3 is a schematic diagram showing the relationship between the four-bar linkage transmission component and the door self-opening power component of a preferred embodiment of the present invention.

[0032] Attached Figure 4 is a partial enlarged view of a preferred embodiment of the present invention. Detailed Embodiment

[0033] The present invention will be further described below in conjunction with the drawings.

[0034] According to the attached Figures 1 to 4As shown in the figure, the automatic opening upper hinge device of the oven of the present invention includes an upper hinge component for the door body 2 to open and close on the oven body 1. The upper hinge component includes a four-bar linkage transmission component 3 for making the door body turn upwards and open, turn downwards and move linearly to close, and a door self-opening power component 6 for automatically turning the door body upwards under the action of a reset elastic force. The upper and lower positioning ends of the four-bar linkage transmission component 3 are respectively pivotally connected to the oven body 1. The swinging end of the four-bar linkage transmission component 3 swings up and down around its upper and lower positioning ends, and the door body 2 is fixed to the swinging end of the four-bar linkage transmission component 3. The rear positioning end of the door self-opening power component 6 is pivotally connected to the oven body 1, and the elastic power end of the door self-opening power component 6 elastically acts on the four-bar linkage transmission component 3 and is slidably connected to the lower positioning end of the four-bar linkage transmission component 3.

[0035] With the structural cooperation of the four-bar linkage transmission component 3 and the door self-opening power component 6, when the door body 2 is opened, the elastic reset pulling force of the door self-opening power component 6 acts on the four-bar linkage transmission component 3, prompting the four-bar linkage transmission component 3 to drive the door body 2 to automatically turn upwards. When the door body 2 is closed, the transmission stability is high, the operation is convenient, and the use is simple. Under the weight of the door body, through the transmission of the four-bar linkage transmission component 3, the door body 2 makes a downward turning and linear movement closing action, effectively avoiding air leakage, strengthening the closing tightness, and ensuring the use quality of the oven.

[0036] Referring to Figures 1 to 4 As shown in the figure, for further optimization, the four-bar linkage transmission component 3 includes an upper hook swinging link 31, a straight link 32, and a lower hook swinging link 33. The upper positioning end of the upper hook swinging link 31 is pivotally connected to the oven body 1. The upper swinging end of the upper hook swinging link 31 and the lower swinging end of the lower hook swinging link 33 are respectively fixedly connected to the straight link 32. The straight link 32 is fixedly installed with the door body 2. The lower positioning end of the lower hook swinging link 33 is located below the upper hook swinging link 31 and is pivotally connected to the oven body 1.

[0037] Among them, the shape of the upper hook swinging link 31 is a J-shaped upper hook swinging rod, and the shape of the lower hook swinging link 33 is a J-shaped lower hook swinging rod. Using the J-shaped upper hook swinging rod and the J-shaped lower hook swinging rod to cooperate with the straight link 32 respectively to form a four-bar linkage transmission component 3 with the characteristics of four-bar linkage transmission, the shape of the four-bar linkage transmission component 3 is specifically as Figures 1 to 3 shown.

[0038] When the door body 2 is opened, the upper swinging end of the upper hook swinging link 31 and the lower swinging end of the lower hook swinging link 33 respectively turn upwards around the upper positioning end of the upper hook swinging link 31 and the lower positioning end of the lower hook swinging link 33 to form an upper turning opening trajectory in which the four-bar linkage transmission component 3 drives the door body 2 to turn upwards.

[0039] The upper swing end of the upper hook swing link 31 and the lower swing end of the lower hook swing link 33 respectively turn downward around the upper positioning end of the upper hook swing link 31 and the lower positioning end of the lower hook swing link 33, so as to form a lower flip section of the closing track for the four-bar linkage 3 to drive the door body 2 to turn downward.

[0040] When the door body turns downward to a specific position, the connection line between the upper swing end of the upper hook swing link 31 and the lower swing end of the lower hook swing link 33 is parallel to the side edge of the port of the baking box body 1 and swings inward with the upper positioning end of the upper hook swing link 31 and the lower positioning end of the lower hook swing link 33 as fixed points, thereby forming a second-stage linear closing track for the four-bar linkage 3 to drive the door body 2 to move linearly relative to the baking box body 1.

[0041] In this way, the four-bar linkage 3 of this structure uses the upper hook swing link 31, the straight link 32, and the lower hook swing link 33 to form a four-bar combination form, strengthening the transmission stability, improving the load-bearing strength, adapting to the use of the door body 2 with a relatively large load, having high applicability. At the same time, under the action of the characteristics of the self-shapes of the upper hook swing link 31, the straight link 32, and the lower hook swing link 33, the four-bar linkage 3 does not interfere with the baking box body 1 during operation, ensuring the use effect of the baking box body.

[0042] Refer to 1 to Figure 4 As shown, in the optimized solution, the lower hook swing link 33 is provided with a positioning arc portion 331 that can rotate around its lower positioning end and is slidably connected to the door self-opening power component 6, and a swing arc portion 332 connected to the straight link 32. A limiting concave portion 333 for limiting the sliding position of the door self-opening power component 6 is provided between the positioning arc portion 331 and the swing arc portion 332.

[0043] Among them, the door self-opening power component 6 includes a swing rod 61, a spring 62, and a connecting push rod 63. The swing rod 61 is pivotally connected to the left and right sides of the baking box body 1. The upper swing end of the swing rod 61 is buckled with the front elastic end of the spring 62. A rolling wheel 64 is provided at the lower swing end of the swing rod 61. The rolling wheel 64 is in dynamic frictional connection with the outer edge of the upper positioning end of the four-bar linkage 3 as the swing rod 61 swings. The rear elastic end of the spring 62 is buckled on the connecting push rod 63, and the connecting push rod 63 is slidably connected to the end of the baking box body 1.

[0044] When opening the door body 2, under the reset elastic action of the spring 62, the upper swing end of the swing rod 61 is pulled to swing inward. Under the lever principle, the lower swing end of the swing rod 61 is driven to swing upward around the pivot point, so that the moving rolling wheel 64 rolls clockwise on the outer edge of the lower hook swing link 33.

[0045] At this time, under the frictional force, the lower hook swing link 33 swings counterclockwise upward relative to the rolling wheel 64, so that the door body 2 automatically swings upward and opens.

[0046] When closing the door body 2, under the action of the gravity of the door body 2 itself, the door body 2 flips downward, driving the lower hook swing link 33, the straight link 32, and the lower hook swing link 33 to swing downward. At this time, the rolling wheel 64 rotates counterclockwise relative to it. Under the action of the frictional force, the lower swing end of the swing rod 61 moves downward, and the upper swing end of the swing rod 61 swings upward. Under the gravity of the door body 2, the elastic force of the spring 62 is overcome, so that the spring 62 is compressed. At the same time, in cooperation with the self-characteristic structure of the four-bar linkage component 3, the door body 2 is completely closed.

[0047] In the optimized solution, the four-bar linkage components 3 are respectively installed on the left and right sides of the baking box body 1, and a synchronous link 4 is provided between the four-bar linkage components 3. The two ends of the synchronous link 4 are respectively connected to the upper positioning ends of the upper hook swing links 31.

[0048] Under the action of the synchronous link 4, the upward-opening door hinge components installed on the left and right sides of the baking box body 1 can act synchronously, improving the transmission stability, enhancing the opening and closing effect, and ensuring the tightness of the oven door body 2.

[0049] In addition, the lower hook swing link 33 is provided with a positioning arc portion 331 that can rotate around its upper positioning end to be slidably connected to the door self-opening power component 6, and a swing arc portion 332 connected to the straight link 32. A limiting concave portion 333 for limiting the sliding position of the door self-opening power component 6 is provided between the positioning arc portion 331 and the swing arc portion 332.

[0050] Under the action of the limiting concave portion 333, the closing position of the door body 2 is effectively limited. At the same time, to a certain extent, the door body 2 is prevented from being accidentally opened, ensuring the use quality of the product.

[0051] Refer to Figures 1 to 4 As shown, for further refinement, the upward-opening door hinge component further includes a baking tray pushing component 5. The baking tray pushing component 5 includes a positioning link 51 and a pushing straight rod 52. The front end of the pushing straight rod 52 is hinged to the rear end of the positioning link 51. The rear end of the pushing straight rod 52 is connected to a baking tray connecting frame 7. The front end of the positioning link 51 is fixedly connected to the lower hook swing link 33 and rotates with the lower hook swing link 33, so as to drive the pushing straight rod 52 to move forward or backward and drive the baking tray connecting frame 7 to move straight forward or backward at the same time.

[0052] Under the structural cooperation of the positioning connecting rod 51 and the pushing straight rod 52, during the automatic opening and closing of the hinge, the positioning connecting rod 51 rotates with the swinging connecting rod 33 of the lower hook to drive the pushing straight rod 52 to move forward or backward, so that the baking tray connecting frame 7 is automatically pulled out or pulled back. The operation is convenient, and it effectively avoids scalding the user by the hot air when extracting food, improving the safety performance of use.

[0053] Refer to Figures 1 to 4 As shown, for further refinement, a push rod release component 8 for automatic release is provided between the baking tray connecting frame 7 and the rear end of the baking tray pushing component 5 in the case of overload of the baking tray connecting frame 7. The push rod release component 8 includes a buckling rod 81 and a release connecting rod 82. The buckling rod 81 is installed on the baking tray connecting frame 7. The front end of the release connecting rod 82 is connected to the pushing straight rod 52 of the baking tray pushing component 5. The rear end of the release connecting rod 82 is provided with an elastic snap component 9 for snapping with the buckling rod 81 under the action of elasticity or separating from the buckling rod 81 under the action of overload.

[0054] Among them, the elastic snap component 9 includes a movable snap clip 91 and an elastic locking post 92. The fixed end of the movable snap clip 91 is installed on the release connecting rod 82. The elastic locking post 92 is installed at the snap clip port of the movable snap clip 91 and the elastic end of the elastic locking post 92 is clamped on the bottom surface of the movable snap clip 91.

[0055] That is, when the door body 2 is opened, the baking tray connecting frame 7 is overloaded, causing the baking tray connecting frame 7 to press down on the elastic snap component 9. The elastic locking post 92 is compressed downward, causing the movable snap clip 91 to open. Under the elastic restoring force of the spring 62, the release connecting rod 82 is pulled outwards to separate the movable snap clip 91 from the buckling rod 81, so that the baking tray connecting frame 7 is separated from the baking tray pushing component 5, and the door body 2 can be normally opened automatically.

[0056] When the baking tray connecting frame 7 is under normal load and the door body 2 is closed, the movable snap clip 91 moves inwards with the baking tray pushing component 5 and is connected to the buckling rod 81. When an external force for closing the door is applied to the door body 2, the buckling rod 81 presses the movable snap clip 91, forcing the elastic locking post 92 to be compressed downward, so that the buckling rod 81 is smoothly buckled in the movable snap clip 91, and the buckling rod 81 is locked under the elastic force of the elastic locking post 92, so that the baking tray connecting frame 7 is connected to the baking tray pushing component 5, ensuring that the baking tray connecting frame 7 is automatically pulled out or pulled back under normal load.

[0057] In addition, the push rod release component 8 further includes a limit seat 93 for limiting the outward movement position of the baking tray connecting frame 7. The limit seat 93 is fixed on the left and right sides of the baking box body 1. The front end of the baking tray connecting frame 7 passes through the limit seat 93 and is connected to the buckling rod 81. The limit seat 93 is provided with a limit groove for positioning connection or separation with the buckling rod 81.

[0058] Under the action of the limiting seat 93, the running stability of the lifting push rod tripping component 8 is improved, ensuring that the baking tray connecting frame 7 is pulled out or pulled back linearly, and ensuring the service performance of the push rod tripping component 8, so that the oven can be normally opened even under overload conditions.

[0059] The above specific embodiments are only the specific embodiments with better effects of the present invention. Any structures that are the same as or equivalent to the self-opening oven upper door hinge device of the present invention are within the protection scope of the present invention.

Claims

1. An automatically opened oven upward-opening door hinge device, comprising an upward-opening door hinge component for opening and closing a door body (2) on an oven body (1), characterized in that: The upward-opening door hinge component includes a four-bar linkage transmission component (3) for enabling the door body to be turned upward to open, turned downward, and linearly moved to close, and a door self-opening power component (6) for enabling the door body to automatically turn upward under the action of a reset elastic force. The upper and lower positioning ends of the four-bar linkage transmission component (3) are respectively pivotally connected to the baking box body (1). The swing end of the four-bar linkage transmission component (3) swings up and down around its upper and lower positioning ends, and the door body (2) is fixed to the swing end of the four-bar linkage transmission component (3). The rear positioning end of the door self-opening power component (6) is pivotally connected to the baking box body (1), and the elastic power end of the door self-opening power component (6) elastically acts on the four-bar linkage transmission component (3) and is slidably connected to the lower positioning end of the four-bar linkage transmission component (3). The four-bar linkage transmission component (3) includes an upper hook swing link (31), a straight link (32), and a lower hook swing link (33). The upper positioning end of the upper hook swing link (31) is pivotally connected to the baking box body (1). The upper swing end of the upper hook swing link (31) and the lower swing end of the lower hook swing link (33) are respectively fixedly connected to the straight link (32). The straight link (32) is fixedly installed with the door body (2). The lower positioning end of the lower hook swing link (33) is located below the upper hook swing link (31) and is pivotally connected to the baking box body (1). The lower hook swing link (33) is provided with a positioning arc portion (331) that can rotate around its lower positioning end and is slidably connected to the door self-opening power component (6), and a swing arc portion (332) connected to the straight link (32). A limiting concave portion (333) for limiting the sliding position of the door self-opening power component (6) is provided between the positioning arc portion (331) and the swing arc portion (332). The door self-opening power component (6) includes a swing rod (61), a spring (62), and a connecting push rod (63). The swing rod (61) is pivotally connected to the baking box body (1). The upper swing end of the swing rod (61) is buckled with the front elastic end of the spring (62). A rolling wheel (64) is provided at the lower swing end of the swing rod (61). The rolling wheel (64) is in dynamic frictional connection with the outer edge of the upper positioning end of the four-bar linkage transmission component (3) as the swing rod (61) swings. The rear elastic end of the spring (62) is buckled on the connecting push rod (63). The connecting push rod (63) is slidably connected to the end of the baking box body (1).

2. The self-opening oven upper door hinge device according to claim 1, wherein: The four-bar linkage transmission components (3) are respectively installed on the left and right sides of the baking box body (1), and a synchronous link (4) is provided between the four-bar linkage transmission components. The two ends of the synchronous link (4) are respectively connected to the upper positioning ends of the upper hook swing links (31) of the four-bar linkage transmission components (3).

3. The self-opening oven upwardly hinged door device according to claim 1, wherein: The upward-opening door hinge component further includes a baking tray pushing component (5). The baking tray pushing component (5) includes a positioning link rod (51) and a pushing straight rod (52). The front end of the pushing straight rod (52) is hinged to the rear end of the positioning link rod (51). The rear end of the pushing straight rod (52) is connected to a baking tray connecting frame (7). The front end of the positioning link rod (51) is fixedly connected to the lower hook swing link rod (33) and rotates with the lower hook swing link rod (33), so as to drive the pushing straight rod (52) to move forward or backward and drive the baking tray connecting frame (7) to move linearly forward or backward at the same time.

4. The self-opening oven upwardly hinged door device according to claim 3, characterized in that: A push rod release component (8) for automatic release in case of overload of the baking tray connecting frame (7) is provided between the baking tray connecting frame (7) and the rear end of the baking tray pushing component (5). The push rod release component (8) includes a buckling rod (81) and a release link rod (82). The buckling rod (81) is installed on the baking tray connecting frame (7). The front end of the release link rod (82) is connected to the pushing straight rod (52) of the baking tray pushing component (5). An elastic buckle assembly (9) for buckling with the buckling rod (81) under the action of elasticity or separating from the buckling rod (81) under the action of overload is provided at the rear end of the release link rod (82).

5. The self-opening oven upper door hinge device according to claim 4, characterized in that: The elastic buckle assembly (9) includes a movable buckle clip (91) and an elastic locking column (92). The fixed end of the movable buckle clip (91) is installed on the release link rod (82). The elastic locking column (92) is installed at the buckle port of the movable buckle clip (91), and the elastic end of the elastic locking column (92) abuts against the bottom surface of the movable buckle clip (91).

6. The self-opening oven upper door hinge device according to claim 5, characterized in that: The push rod release component (8) further includes a limiting seat (93) for limiting the outward movement position of the baking tray connecting frame (7). The limiting seat (93) is fixed on the left and right sides of the baking box body (1). The front end of the baking tray connecting frame (7) passes through the limiting seat (93) and is connected to the buckling rod (81). The limiting seat (93) is provided with a limiting groove for positioning connection or separation with the buckling rod (81).

7. The automatically opening oven upwardly hinged door hinge device according to claim 4, characterized in that: The upward-opening door hinge component further includes a buffer damper (10). The buffer damper (10) is installed on the baking box body (1). The push rod of the buffer damper (10) is installed at the connection between the push rod release component (8) and the baking tray pushing component (5).

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