Hinge mechanism, cooking utensil and cabinet

Abstract

The utility model provides a hinge mechanism, a cooking utensil and a cabinet, and the hinge mechanism comprises a hinge arm connected with a box body; the hinge seat is connected with the door body; the hinge seat is rotationally connected with the hinge arm through the rotating part; the limiting shell is arranged on the hinge base and movably connected with the rotating part, and the limiting shell can slide relative to the hinge base along with rotation of the door body; the damper is arranged in the limiting shell and can slide relative to the limiting shell, the end, away from the hinge arm, of the damper is in limiting fit with the hinge base in the sliding direction of the limiting shell, and when the hinge mechanism is at the first opening angle, the end, close to the hinge arm, of the limiting shell makes contact with the damper; in the process that the hinge mechanism is switched from the first opening angle to the folding state, the limiting shell slides in the direction away from the hinge arm so that the damper can be compressed and deformed. According to the hinge mechanism provided by the utility model, the buffering of the hinge mechanism in the process of switching from the first opening angle to the folding state is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a hinge mechanism, a cooking utensil and a cabinet. Background Art

[0002] At present, the door and the box of the cooking appliance are connected by a hinge mechanism, so that the door moves with the expansion and folding of the hinge mechanism, thereby opening or closing the box. However, the hinge mechanism has no buffering function during the expansion and folding process, which will cause the door to collide with the box when closing the box and produce abnormal noise, thereby making the door or the box easily damaged and increasing the noise during use. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To this end, a first aspect of the present invention provides a hinge mechanism.

[0005] A second aspect of the present invention further provides a cooking utensil.

[0006] The third aspect of the present invention further provides a cabinet.

[0007] In view of this, the first aspect of the present invention proposes a hinge mechanism for a cooking utensil, the cooking utensil comprising a box body and a door body, the hinge mechanism comprising: a hinge arm connected to the box body; a hinge seat connected to the door body; a rotating part, the hinge seat being rotatably connected to the hinge arm through the rotating part, and the hinge mechanism being able to switch between an unfolded state and a folded state so that the door body opens or closes the box body; a limit shell being provided on the hinge seat and movably connected to the rotating part, the limit shell being able to slide relative to the hinge seat as the door body rotates; a damper being provided in the limit shell and being able to slide relative to the limit shell, along the sliding direction of the limit shell, an end of the damper away from the hinge arm is limitedly engaged with the hinge seat, wherein, when the hinge mechanism is at a first opening angle, an end of the limit shell close to the hinge arm contacts the damper, and in the process of the hinge mechanism switching from the first opening angle to the folded state, the limit shell slides in a direction away from the hinge arm to compress and deform the damper.

[0008] The hinge mechanism provided by the present invention includes a hinge arm, a hinge seat, a rotating part and a limiting shell. The hinge seat and the hinge arm are rotatably connected through the rotating part, so that the hinge mechanism can switch between the unfolded state and the folded state. The limiting shell is arranged in the hinge seat and movably connected with the rotating part, so that during the state switching of the hinge mechanism, the limiting shell can slide under the drive of the rotating part. The damper is arranged in the limiting shell, and the damper is limitedly matched with the hinge seat along the sliding direction of the limiting shell away from the end of the hinge arm, so that the damper is fixed relative to the hinge seat, and when the hinge mechanism is at a first opening angle, the damper contacts the end of the limiting shell close to the hinge arm. In this way, during the process of the hinge mechanism switching from the first opening angle to the folded state, the limiting shell slides in the direction away from the hinge arm, thereby causing the opposite ends of the damper along the sliding direction to be squeezed, causing the damper to deform, so that the damper can generate a buffering force to prevent the hinge seat and the hinge arm from continuing to rotate, so that The hinge seat and the hinge arm change slowly, thereby achieving buffering in the process of the hinge mechanism switching from the first opening angle to the folded state, thereby avoiding damage to cooking utensils or excessive noise caused by excessive collision force in the process of the door body closing the box body. At the same time, the damper is in a compressed state between the first opening angle and the folded state, rather than being in a compressed state throughout the process of switching from the expanded state to the folded state. This can avoid the occurrence of excessive resistance in the process of the hinge mechanism switching from the expanded state to the first opening angle, making the hinge mechanism more labor-saving in the process of switching from the expanded state to the first opening angle.

[0009] It can be understood that the angle between the hinge arm and the hinge seat at the first opening angle is smaller than the angle between the hinge arm and the hinge seat in the unfolded state, thereby achieving slow closing of the hinge arm and the hinge seat at a small angle, that is, achieving slow closing of the door body and the box body at a small angle.

[0010] It is understandable that during the unfolding and folding of the hinge mechanism, the rotating part can drive the limiting shell to slide along the sliding direction toward the hinge arm, or the rotating part can drive the limiting shell to slide along the sliding direction toward the hinge arm.

[0011] Optionally, during the process of the hinge mechanism switching from the expanded state to the folded state, the rotating part drives the limit shell to slide along the sliding direction away from the hinge arm, so that the door body closes the box body; during the process of the hinge mechanism switching from the folded state to the expanded state, the rotating part drives the limit shell to slide along the sliding direction toward the hinge arm, so that the door body opens the box body.

[0012] It can be understood that the cooking appliance includes a box body and a door body, and the door body and the box body are rotatably connected through a hinge mechanism. Optionally, the door body is connected to the hinge seat, and the box body is connected to the hinge arm.

[0013] The cooking appliance provided by the present invention may also have the following additional technical features:

[0014] In some embodiments, optionally, one of the damper and the hinge seat is provided with a limiting hole, and the other is provided with a limiting member, and the limiting member is passed through the limiting hole.

[0015] In this embodiment, one of the damper and the hinge seat is provided with a limiting hole, and the other is provided with a limiting member. The damper and the hinge seat are limitedly matched by the connection between the limiting member and the limiting hole, so that the damper is fixed relative to the hinge seat and can slide relative to the limiting shell. In this way, when the hinge mechanism switches from the first opening angle to the folded state, the limiting shell slides in the direction away from the hinge arm to squeeze the damper, thereby generating a damping force to achieve buffering during the closing process of the hinge mechanism, so that when the door body closes the box body, the damping force is used to achieve slow closing of the door body within the first opening angle range.

[0016] In some embodiments, optionally, a sliding groove is provided on the side wall of the limiting shell, and the limiting member is passed through the sliding groove and can slide in the sliding groove.

[0017] In this embodiment, the side wall of the limit shell is provided with a slide groove. The setting of the slide groove can not only enable the damper to pass through the slide groove to achieve limiting cooperation with the hinge seat, but also ensure the relative sliding between the limit shell and the damper, and then in the process of switching the state of the hinge mechanism, the limit shell moves relative to the hinge seat and the damper, so that the end of the limit shell close to the hinge arm can contact the damper, thereby realizing slow closing of the door body.

[0018] In some embodiments, optionally, the limiting housing includes at least two plates arranged opposite to each other, one end of the plate along the sliding direction is connected to the rotating part, and the damper is arranged between the two plates.

[0019] In this embodiment, the limit shell includes at least two plates arranged relative to each other, and the damper is arranged between the at least two plates, which can reduce the space occupied by the limit shell and the damper as a whole, while also ensuring the relative position between the damper and the limit shell. When the limit shell slides, the end of the limit shell connected to the rotating part can abut against the damper, thereby squeezing the damper.

[0020] In some embodiments, optionally, the limit shell also includes: a first connecting shaft, at least two plates are connected by the first connecting shaft at one end close to the hinge arm along the sliding direction, and when the hinge mechanism is at the first opening angle, the damper contacts the first connecting shaft; a second connecting shaft, at least two plates are connected by the second connecting shaft at one end away from the hinge arm along the sliding direction.

[0021] In this embodiment, the limiting housing further includes a first connecting shaft and a second connecting shaft. At least two plates are connected by the first connecting shaft at one end closer to the hinge arm along the sliding direction, and by the second connecting shaft at one end farther from the hinge arm. This connects the at least two plates together, thereby enhancing the connection strength between the at least two plates and ensuring a squeezing effect on the damper. When the hinge mechanism is at a first opening angle, the damper contacts the first connecting shaft. During the process of the hinge mechanism switching from the first opening angle to the folded state, the damper is squeezed by the first connecting shaft, causing the damper to generate a damping force.

[0022] In some embodiments, optionally, a limiting groove is provided on the hinge seat, and the second connecting shaft is slidably connected to the limiting groove.

[0023] In this embodiment, a limiting groove is provided on the hinge seat, and the second connecting shaft at one end of the plate body away from the hinge arm is passed through the limiting groove and can slide in the limiting groove, thereby realizing a sliding connection between the limiting shell and the hinge seat.

[0024] In some embodiments, optionally, the box body is provided with an opening, the door body is used to open or close the opening, and the rotating part includes: a first connecting rod, the two ends of the first connecting rod are respectively rotatably connected to the hinge seat and the hinge arm, and the limit shell is rotatably connected to the first connecting rod; a second connecting rod, the two ends of the second connecting rod are respectively rotatably connected to the hinge seat and the hinge arm; the hinge arm is located on one side of the opening along the first direction, wherein, in the process of switching the hinge mechanism from a folded state to an unfolded state, the first connecting rod and the second connecting rod drive the door body to move along the first direction to the other side of the opening through the hinge seat.

[0025] In this embodiment, the rotating part includes a first connecting rod and a second connecting rod, and the two ends of the first connecting rod are rotationally connected to the hinge seat and the hinge arm respectively, and the two ends of the second connecting rod are rotationally connected to the hinge seat and the hinge arm respectively, so that the hinge arm and the hinge seat are rotationally connected through the joint action of the first connecting rod and the second connecting rod. In the process of the hinge mechanism switching from the folded state to the unfolded state, the hinge seat drives the door body to move along the first direction toward the other side of the opening through the first connecting rod and the second connecting rod, that is, the door body is lifted toward the other side of the opening, thereby avoiding interference with the cabinet and other mounting structures during the rotation of the door body. Therefore, there is no need to sink the cabinet to provide the space required for the door body to rotate in the first direction, and the gap between the door body and the cabinet can be set relatively small, so that the gap between the door body and the cabinet is not easy to accumulate dust and is easy to clean, thereby improving the integrity between the cooking utensils and the cabinet, and meeting the smoothness of the door movement during the opening and closing process.

[0026] In some embodiments, optionally, a first rotating shaft and a second rotating shaft are respectively provided at both ends of the first connecting rod, and a third rotating shaft and a fourth rotating shaft are respectively provided at both ends of the second connecting rod, and the first rotating shaft and the third rotating shaft are both rotatably connected to the hinge arm, and along the first direction, the rotation axis of the first rotating shaft is located on the side of the rotation axis of the third rotating shaft close to the opening, and the second rotating shaft and the fourth rotating shaft are both rotatably connected to the hinge seat, wherein, when the hinge mechanism is in a folded state, along the first direction, the rotation axis of the second rotating shaft is located on the side of the rotation axis of the fourth rotating shaft close to the opening; when the hinge mechanism is in an unfolded state, along the first direction, the rotation axis of the second rotating shaft is located on the side of the rotation axis of the fourth rotating shaft away from the opening.

[0027] In this embodiment, a first rotating shaft and a second rotating shaft are respectively provided at both ends of the first connecting rod, the first rotating shaft is rotatably connected to the hinge arm, and the second rotating shaft is rotatably connected to the hinge seat; a third rotating shaft and a fourth rotating shaft are respectively provided at both ends of the second connecting rod, the third rotating shaft is rotatably connected to the hinge arm, and the fourth rotating shaft is rotatably connected to the hinge seat. Along a first direction, the rotation axis between the first rotating shaft and the hinge arm is located on the side of the rotation axis between the third rotating shaft and the hinge arm closer to the opening. During the opening and closing of the door, the positions of the second rotating shaft and the fourth rotating shaft move with the door. Specifically, when the hinge mechanism is in a folded state, the door closes the opening, and the rotation axis of the second rotating shaft is located on the side of the rotation axis of the fourth rotating shaft closer to the opening. When the hinge mechanism is in an unfolded state, the door opens the opening, and the rotation axis between the second rotating shaft and the hinge seat is located on the side of the rotation axis between the fourth rotating shaft and the hinge seat away from the opening. That is, during the process of switching from closing the opening to opening the opening, the bottom of the door body, in addition to rotating to open the opening, can also move toward the side closer to the opening under the drive of the fourth rotating shaft of the second connecting rod, thereby allowing the door body to avoid external structures such as the cabinet during opening. In the cooking appliance disclosed in the present application, the movement trajectory of the door body, under the mutual restraint of the first connecting rod and the second connecting rod, allows at least the end of the door body connected to the cabinet to move in a direction that avoids the cabinet.

[0028] In some embodiments, optionally, when the hinge mechanism is in a folded state, the distance between the rotation axis of the third rotation shaft and the rotation axis of the fourth rotation shaft along the second direction is a first distance; when the hinge mechanism is in an unfolded state, the distance between the rotation axis of the third rotation shaft and the rotation axis of the fourth rotation shaft along the second direction is a second distance, and the second distance is smaller than the first distance.

[0029] In this embodiment, the first distance is greater than the second distance, so that when the hinge mechanism switches to the expanded state, driven by the first link and the second link, the end of the hinge seat connected to the first link and the second link moves along the second direction toward the side close to the opening. That is, when the hinge mechanism switches to the expanded state, the hinge seat can move along the first direction toward the other side of the opening while rotating, and can also move along the second direction toward the direction close to the box body, so that the door body connected to the hinge seat can move along the first direction toward the other side of the opening, and can also move along the second direction toward the direction close to the box body, thereby avoiding interference between the door body and the cabinet body, and reducing the overall length of the cooking appliance along the second direction when the door body is open, so as to facilitate users to take and place food.

[0030] In some embodiments, optionally, the first link includes a groove, a portion of the hinge arm is disposed in the groove and is rotatably connected to the first link; and / or the number of the second links is two, and the two second links are located on opposite sides of the hinge arm.

[0031] In this embodiment, a portion of the hinge arm is disposed within the groove for rotational connection with the first link. This groove surrounds opposite sides of the hinge arm, enhancing the connection strength between the first link and the hinge arm. The two second links are located on opposite sides of the hinge arm, improving the stability of the hinge mechanism during rotation.

[0032] In some embodiments, optionally, the hinge mechanism further includes: a first elastic member, located at one end of the limit shell away from the hinge arm, one end of the first elastic member is connected to the limit shell, and the other end is connected to the hinge seat; in the process of the hinge mechanism switching from the folded state to the unfolded state, the rotating part drives the limit shell to slide toward the direction close to the hinge arm, and the first elastic member is in a stretched state so that the hinge mechanism hovers at at least one second opening angle; in the process of the hinge mechanism switching from the unfolded state to the folded state, the first elastic member restores its deformation to drive the door body to close the box body.

[0033] In this embodiment, the first elastic member is provided on the hinge seat, located at one end of the limiting housing away from the hinge arm and rotatably connected to the other end of the limiting housing, wherein the limiting housing can slide within the hinge seat under the action of the rotating portion and the first elastic member. When the door body is pulled to open, the rotating portion drives the limiting housing close to the hinge arm to stretch the first elastic member. When the spring tension provided by the first elastic member is equal to the torque generated by the weight of the door body, the door body is suspended at the second opening angle. When the door body is closed, the first elastic member provides a pulling force when it retracts, thereby providing assistance for closing the door body. At the same time, when the spring tension provided by the first elastic member is greater than the torque generated by the weight of the door body, the door body can be automatically closed.

[0034] In some embodiments, optionally, the hinge mechanism further includes: a pull rod, provided on the hinge seat, and the two ends of the pull rod are respectively rotatably connected to the rotating part and the limit shell; a second elastic member, provided on the pull rod, one end of the second elastic member is in contact with the rotating part, and the other end is limited by the pull rod; the hinge mechanism also has a third opening angle between the unfolded state and the folded state. In the process of the hinge mechanism switching from the third opening angle to the folded state, the second elastic member is in a compressed state, which is used to drive the hinge seat to move so that the hinge mechanism switches and remains in the folded state.

[0035] In this embodiment, the hinge mechanism further includes a pull rod and a second elastic member, the two ends of the pull rod being respectively connected to the rotating portion and the limit shell, so that the limit shell is transmitted to the rotating portion through the pull rod. The second elastic member is arranged on the pull rod, and when the door body is at the third opening angle, the second elastic member contacts the rotating portion. During the process of the hinge mechanism switching from the third opening angle to the folded state, the rotating portion gradually squeezes the second elastic member, causing at least a portion of the second elastic member to deform, and then the reverse thrust generated by the second elastic member acts on the hinge arm, causing the hinge seat to drive the door body to close the opening, that is, the arrangement of the second elastic member provides an assist for the door body to close the opening, thereby realizing the automatic locking of the door body during the process of switching from the third opening angle to the closed opening.

[0036] In some embodiments, optionally, the rotating portion is provided with a cam structure, and the cam structure is in contact with the second elastic member to push the second elastic member to compress.

[0037] In this embodiment, the rotating part is provided with a cam structure. During the rotation of the hinge seat, the second elastic member is squeezed by the cam structure, thereby causing the second elastic member to deform, thereby providing assistance for closing the door body.

[0038] In some embodiments, optionally, the second elastic member includes: a power-assisting rod, which is provided on the pull rod and movably connected to the pull rod; a rolling portion, which is provided at one end of the power-assisting rod close to the hinge arm, and the second elastic member contacts the cam structure through the rolling portion; an elastic portion, wherein one end of the elastic portion is limitedly cooperated with the power-assisting rod, and the other end of the elastic portion is limitedly cooperated with the pull rod, and in the folded state, the elastic portion is in a compressed state.

[0039] In this embodiment, the second elastic member includes a power-assisting rod, a rolling portion, and an elastic portion. The power-assisting rod is provided on the pull rod and can be movably connected to the pull rod. The rolling portion is provided at the end of the power-assisting rod near the hinge arm, and the elastic portion is provided on the power-assisting rod. The end of the elastic portion near the hinge arm is engaged with the power-assisting rod limiter, and the end of the elastic portion away from the hinge arm is engaged with the pull rod limiter. When the door body switches from the third opening angle to the closed opening, the cam structure contacts the rolling portion and squeezes the power-assisting rod through the rolling portion, causing the power-assisting rod to move in a direction away from the hinge arm, thereby compressing the elastic portion. The reverse thrust of the elastic portion is used to assist the door body in closing, thereby realizing the automatic locking function of the door body. At the same time, the provision of the rolling portion reduces the friction between the second elastic member and the cam structure, thereby reducing the degree of wear of the cam structure and increasing the service life of the hinge mechanism.

[0040] According to the second aspect of the present invention, a cooking utensil is also proposed, comprising: a box body and a door body, the box body being provided with an opening, the door body being used to open or close the opening; and a hinge mechanism as proposed in any one of the above items, the hinge arm being provided on the box body and being located on one side of the opening along the first direction, the hinge seat being provided on the door body, the door body opening the opening in the unfolded state, and closing the opening in the folded state.

[0041] The cooking utensil provided in the second aspect of the present invention includes the hinge mechanism proposed in any of the above embodiments and thus has all the beneficial effects of the hinge mechanism.

[0042] According to a third aspect of the present invention, a cabinet is provided, comprising: a cabinet body; and a cooking utensil as provided in any one of the above embodiments, wherein the cooking utensil is embedded in the cabinet body.

[0043] The cabinet provided in the third aspect of the present invention includes the cooking utensil proposed in any of the above embodiments and thus has all the beneficial effects of the cooking utensil.

[0044] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 One of the structural schematic diagrams of the hinge mechanism of one embodiment of the present utility model is shown;

[0047] Figure 2 The second structural diagram of the hinge mechanism of one embodiment of the present invention is shown;

[0048] Figure 3A schematic structural diagram showing a hinge mechanism in a folded state according to an embodiment of the present invention is shown;

[0049] Figure 4 A schematic diagram showing the structure of a hinge mechanism in one embodiment of the present invention in a folded state and an unfolded state;

[0050] Figure 5 A schematic structural diagram showing a hinge mechanism in an expanded state according to an embodiment of the present invention is shown;

[0051] Figure 6 One of the structural schematic diagrams of a cooking utensil according to an embodiment of the present invention is shown;

[0052] Figure 7 Shown Figure 6 A schematic diagram of a portion of the structure of a cooking appliance according to the illustrated embodiment;

[0053] Figure 8 A second structural diagram of a cooking utensil according to an embodiment of the present invention is shown;

[0054] Figure 9 Shown Figure 8 A schematic diagram of a portion of the structure of a cooking appliance according to the embodiment shown.

[0055] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names is as follows:

[0056] 1 Hinge mechanism, 10 Hinge arm, 11 Hinge seat, 110 Limiting hole, 112 Limiting groove, 12 Rotating portion, 120 First connecting rod, 1200 First rotating shaft, 1202 Second rotating shaft, 1204 Cam structure, 122 Second connecting rod, 1220 Third rotating shaft, 1222 Fourth rotating shaft, 13 Limiting shell, 130 Slide groove, 132 Plate body, 134 First connecting shaft, 136 Second connecting shaft, 14 Damper, 140 Limiting member, 15 First elastic member, 16 Pull rod, 17 Second elastic member, 170 Power lever, 172 Rolling portion, 174 Elastic portion, 2 Box body, 20 Opening, 3 Door body. DETAILED DESCRIPTION

[0057] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0059] Refer to the following Figures 1 to 9 The present invention describes a hinge mechanism, a cooking appliance, and a cabinet according to some embodiments of the present invention.

[0060] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 8 As shown, according to one embodiment of the present invention, the present invention proposes a hinge mechanism 1 for a cooking utensil, the cooking utensil comprising a box body 2 and a door body 3, the hinge mechanism 1 comprising: a hinge arm 10 connected to the box body 2; a hinge seat 11 connected to the door body 3; a rotating portion 12, the hinge seat 11 being rotatably connected to the hinge arm 10 through the rotating portion 12, the hinge mechanism 1 being able to switch between an unfolded state and a folded state, so that the door body 3 opens or closes the box body 2; a limiting shell 13, provided on the hinge seat 11 and movably connected to the rotating portion 12, the limiting shell 13 being able to The damper 14 is arranged in the limiting shell 13 and can slide relative to the limiting shell 13. Along the sliding direction of the limiting shell 13, the end of the damper 14 away from the hinge arm 10 is limitedly matched with the hinge seat 11. When the hinge mechanism 1 is at the first opening angle, the end of the limiting shell 13 close to the hinge arm 10 contacts the damper 14. In the process of switching the hinge mechanism 1 from the first opening angle to the folded state, the limiting shell 13 slides in the direction away from the hinge arm 10 to compress and deform the damper 14.

[0061] The hinge mechanism 1 provided by the present invention includes a hinge arm 10, a hinge base 11, a rotating portion 12, and a limiting housing 13. The hinge base 11 and the hinge arm 10 are rotatably connected via the rotating portion 12, allowing the hinge mechanism 1 to switch between an unfolded state and a folded state. The limiting housing 13 is disposed within the hinge base 11 and movably connected to the rotating portion 12, so that the limiting housing 13 can slide under the drive of the rotating portion 12 during the state switching process of the hinge mechanism 1. The damper 14 is arranged in the limiting shell 13, and the damper 14 is limitedly matched with the hinge seat 11 at one end away from the hinge arm 10 along the sliding direction of the limiting shell 13, so that the damper 14 is fixed relative to the hinge seat 11, and when the hinge mechanism 1 is at the first opening angle, the damper 14 contacts the end of the limiting shell 13 close to the hinge arm 10. In this way, when the hinge mechanism 1 switches from the first opening angle to the folded state, the limiting shell 13 slides in the direction away from the hinge arm 10, thereby causing the two opposite ends of the damper 14 along the sliding direction to be squeezed, causing the damper 14 to deform, so that the damper 14 can produce a resistance to the hinge seat 11 and the hinge arm 1 0, so that the hinge seat 11 and the hinge arm 10 change slowly, thereby achieving buffering in the process of the hinge mechanism 1 switching from the first opening angle to the folded state, thereby avoiding the problem of damage to cooking utensils or excessive noise caused by excessive collision force in the process of the door body 3 closing the box body 2. At the same time, the damper 14 is in a compressed state between the first opening angle and the folded state, rather than being in a compressed state throughout the process of switching from the unfolded state to the folded state, which can avoid the occurrence of excessive resistance in the process of the hinge mechanism 1 switching from the unfolded state to the first opening angle, making the hinge mechanism 1 more labor-saving in the process of switching from the unfolded state to the first opening angle.

[0062] It can be understood that the angle between the hinge arm 10 and the hinge seat 11 at the first opening angle is smaller than the angle between the hinge arm 10 and the hinge seat 11 in the unfolded state, thereby achieving slow closing of the hinge arm 10 and the hinge seat 11 at a small angle, that is, achieving slow closing of the door body 3 and the box body 2 at a small angle.

[0063] It can be understood that during the unfolding and folding of the hinge mechanism 1, the rotating part 12 can drive the limiting shell 13 to slide along the sliding direction toward the hinge arm 10, or the rotating part 12 can drive the limiting shell 13 to slide along the sliding direction toward the hinge arm 10.

[0064] Optionally, during the process of switching the hinge mechanism 1 from the unfolded state to the folded state, the rotating part 12 drives the limiting shell 13 to slide along the sliding direction away from the hinge arm 10, so that the door body 3 closes the box body 2; during the process of switching the hinge mechanism 1 from the folded state to the unfolded state, the rotating part 12 drives the limiting shell 13 to slide along the sliding direction toward the hinge arm 10, so that the door body 3 opens the box body 2.

[0065] It can be understood that the cooking appliance includes a box body 2 and a door body 3 , and the door body 3 and the box body 2 are rotatably connected through a hinge mechanism 1 . Optionally, the door body 3 is connected to the hinge seat 11 , and the box body 2 is connected to the hinge arm 10 .

[0066] Optionally, the first opening angle may be set according to actual conditions, for example, the first opening angle is less than or equal to 10°.

[0067] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, one of the damper 14 and the hinge seat 11 is provided with a limiting hole 110 , and the other is provided with a limiting member 140 , and the limiting member 140 is passed through the limiting hole 110 .

[0068] In this embodiment, one of the damper 14 and the hinge seat 11 is provided with a limiting hole 110, and the other is provided with a limiting member 140. The damper 14 and the hinge seat 11 are limitedly matched by the connection between the limiting member 140 and the limiting hole 110, so that the damper 14 is fixed relative to the hinge seat 11 and can slide relative to the limiting shell 13. In this way, when the hinge mechanism 1 switches from the first opening angle to the folding state, the limiting shell 13 slides in the direction away from the hinge arm 10 to squeeze the damper 14, thereby generating a damping force, thereby achieving buffering during the closing process of the hinge mechanism 1, so that when the door body 3 closes the box body 2, the door body 3 is slowly closed by the damping force within the first opening angle range.

[0069] In a specific application, the limiting hole 110 is provided on the hinge seat 11 , and a limiting member 140 is passed through the damper 14 . The limiting member 140 is passed through the limiting hole 110 to achieve limiting cooperation between the damper 14 and the hinge seat 11 .

[0070] like Figure 3 and Figure 4 As shown, in some embodiments, optionally, a sliding groove 130 is provided on the side wall of the limiting shell 13 , and the limiting member 140 is passed through the sliding groove 130 and can slide in the sliding groove 130 .

[0071] In this embodiment, a slide groove 130 is provided on the side wall of the limit shell 13. The setting of the slide groove 130 can not only enable the damper 14 to pass through the slide groove 130 to achieve limiting cooperation with the hinge seat 11, but also ensure the relative sliding between the limit shell 13 and the damper 14, and then in the process of switching the state of the hinge mechanism 1, the limit shell 13 moves relative to the hinge seat 11 and the damper 14, so that the end of the limit shell 13 close to the hinge arm 10 can contact the damper 14, thereby realizing the slow closing of the door body 3.

[0072] like Figure 2 As shown, in some embodiments, optionally, the limiting housing 13 includes at least two plates 132 arranged opposite to each other, one end of the plate 132 along the sliding direction is connected to the rotating part 12, and the damper 14 is arranged between the two plates 132.

[0073] In this embodiment, the limiting shell 13 includes at least two plates 132 arranged relative to each other, and the damper 14 is arranged between the at least two plates 132, which can reduce the space occupied by the limiting shell 13 and the damper 14 as a whole, while also ensuring the relative position between the damper 14 and the limiting shell 13. When the limiting shell 13 slides, the end of the limiting shell 13 connected to the rotating part 12 can abut against the damper 14, thereby squeezing the damper 14.

[0074] Optionally, the sliding groove 130 is provided on the plate body 132 .

[0075] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 9 As shown, in some embodiments, optionally, the limit shell 13 also includes: a first connecting shaft 134, at least two plates 132 are connected at one end close to the hinge arm 10 along the sliding direction through the first connecting shaft 134, and when the hinge mechanism 1 is at the first opening angle, the damper 14 contacts the first connecting shaft 134; a second connecting shaft 136, at least two plates 132 are connected at one end away from the hinge arm 10 along the sliding direction through the second connecting shaft 136.

[0076] In this embodiment, the limiting housing 13 further includes a first connecting shaft 134 and a second connecting shaft 136. At least two plates 132 are connected along the sliding direction at one end closer to the hinge arm 10 via the first connecting shaft 134, and at one end farther from the hinge arm 10 via the second connecting shaft 136. This connects the at least two plates 132 together, improving the connection strength between the at least two plates 132 and ensuring a squeezing effect on the damper 14. When the hinge mechanism 1 is at a first opening angle, the damper 14 contacts the first connecting shaft 134. During the process of switching the hinge mechanism 1 from the first opening angle to the folded state, the damper 14 is squeezed by the first connecting shaft 134, causing the damper 14 to generate a damping force.

[0077] like Figure 1 As shown, in some embodiments, optionally, a limiting groove 112 is provided on the hinge seat 11 , and the second connecting shaft 136 is slidably connected to the limiting groove 112 .

[0078] In this embodiment, a limiting groove 112 is provided on the hinge seat 11, and the second connecting shaft 136 of the plate body 132 at one end away from the hinge arm 10 is passed through the limiting groove 112 and can slide in the limiting groove 112, thereby realizing a sliding connection between the limiting shell 13 and the hinge seat 11.

[0079] like Figure 3 、 Figure 4 and Figure 5 As shown, in some embodiments, optionally, the box body 2 is provided with an opening 20, the door body 3 is used to open or close the opening 20, and the rotating part 12 includes: a first connecting rod 120, the two ends of the first connecting rod 120 are respectively rotatably connected to the hinge seat 11 and the hinge arm 10, and the limiting shell 13 is rotatably connected to the first connecting rod 120; a second connecting rod 122, the two ends of the second connecting rod 122 are respectively rotatably connected to the hinge seat 11 and the hinge arm 10; the hinge arm 10 is located on one side of the opening 20 along the first direction, wherein, in the process of switching the hinge mechanism 1 from the folded state to the unfolded state, the first connecting rod 120 and the second connecting rod 122 drive the door body 3 to move along the first direction to the other side of the opening 20 through the hinge seat 11.

[0080] In this embodiment, the rotating portion 12 includes a first connecting rod 120 and a second connecting rod 122. The two ends of the first connecting rod 120 are respectively connected to the hinge seat 11 and the hinge arm 10 for rotation. The two ends of the second connecting rod 122 are respectively connected to the hinge seat 11 and the hinge arm 10 for rotation. The hinge arm 10 and the hinge seat 11 are connected for rotation by the joint action of the first connecting rod 120 and the second connecting rod 122. When the hinge mechanism 1 switches from the folded state to the unfolded state, the hinge seat 11 drives the door body 3 through the first connecting rod 120 and the second connecting rod 122. Movement toward the other side of the opening 20 along the first direction means that the door body 3 is lifted toward the other side of the opening 20, thereby avoiding interference with mounting structures such as the cabinet during the rotation of the door body 3. Therefore, there is no need to sink the cabinet to provide the space required for the door body 3 to rotate in the first direction, and the gap between the door body 3 and the cabinet can be set to be relatively small, so that the gap between the door body 3 and the cabinet is not easy to accumulate dust and is easy to clean, thereby improving the integrity between the cooking appliance and the cabinet and meeting the smoothness of the movement of the door body 3 during the opening and closing process.

[0081] It can be understood that, in the unfolded state, the door body 3 opens the opening 20 , and in the folded state, the door body 3 closes the opening 20 .

[0082] like Figure 1 As shown, in some embodiments, optionally, a first rotating shaft 1200 and a second rotating shaft 1202 are respectively provided at both ends of the first connecting rod 120, and a third rotating shaft 1220 and a fourth rotating shaft 1222 are respectively provided at both ends of the second connecting rod 122, and the first rotating shaft 1200 and the third rotating shaft 1220 are both rotatably connected to the hinge arm 10, along the first direction, the rotation axis A of the first rotating shaft 1200 is located on the side of the rotation axis C of the third rotating shaft 1220 close to the opening 20, and the second rotating shaft 1202 and the fourth rotating shaft 1222 are both rotatably connected to the hinge seat 11, wherein, when the hinge mechanism 1 is in a folded state, along the first direction, the rotation axis B of the second rotating shaft 1202 is located on the side of the rotation axis D of the fourth rotating shaft 1222 close to the opening 20; when the hinge mechanism 1 is in an unfolded state, along the first direction, the rotation axis B of the second rotating shaft 1202 is located on the side of the rotation axis D of the fourth rotating shaft 1222 away from the opening 20.

[0083] In this embodiment, a first rotating shaft 1200 and a second rotating shaft 1202 are respectively provided at both ends of the first connecting rod 120, the first rotating shaft 1200 is rotatably connected to the hinge arm 10, and the second rotating shaft 1202 is rotatably connected to the hinge seat 11; a third rotating shaft 1220 and a fourth rotating shaft 1222 are respectively provided at both ends of the second connecting rod 122, the third rotating shaft 1220 is rotatably connected to the hinge arm 10, and the fourth rotating shaft 1222 is rotatably connected to the hinge seat 11. Along the first direction, the rotation axis between the first rotation axis 1200 and the hinge arm 10 is located on the side of the rotation axis between the third rotation axis 1220 and the hinge arm 10 close to the opening 20. During the opening and closing process of the door body 3, the positions of the second rotation axis 1202 and the fourth rotation axis 1222 move with the door body 3. Specifically, when the hinge mechanism 1 is in the folded state, the door body 3 closes the opening 20, and the rotation axis B of the second rotation axis 1202 is located on the side of the rotation axis D of the fourth rotation axis 1222 close to the opening 20. When the hinge mechanism 1 is in the unfolded state, the rotation axis B of the second rotation axis 1202 is located on the side of the rotation axis D of the fourth rotation axis 1222 close to the opening 20. In the closed state, the door body 3 opens the opening 20, and the rotation axis between the second rotation shaft 1202 and the hinge seat 11 is located on the side of the rotation axis between the fourth rotation shaft 1222 and the hinge seat 11 away from the opening 20. That is, when the door body 3 switches from the state of closing the opening 20 to the state of opening the opening 20, the bottom of the door body 3 can not only rotate to open the opening 20, but also move toward the side closer to the opening 20 under the drive of the fourth rotation shaft 1222 of the second connecting rod 122, thereby allowing the door body 3 to avoid external cabinet structures during the opening process. In the cooking appliance proposed in this application, the movement trajectory of the door body 3 formed by the mutual restriction of the first connecting rod 120 and the second connecting rod 122 enables at least the end of the door body 3 connected to the box body 2 to move in the direction of avoiding the cabinet.

[0084] Optionally, the door body 3 can be a drop-down door structure, that is, the hinge mechanism 1 connects the bottom of the box body 2 and the bottom of the door body 3, so that the door body 3 flips downward to open the opening 20; the door body 3 can also be a side-opening door structure, that is, the door body 3 is rotatably connected to the box body 2 through the hinge mechanism 1 at one end along the length or width.

[0085] Optionally, when the door body 3 is a drop-down door structure, the door body 3 connected to the hinge seat 11 is enabled to move upward along the first direction.

[0086] like Figure 1 、 Figure 3 and Figure 5As shown, in some embodiments, optionally, when the hinge mechanism 1 is in a folded state, the distance between the rotation axis C of the third rotation axis 1220 and the rotation axis D of the fourth rotation axis 1222 along the second direction is a first distance L1; when the hinge mechanism 1 is in an unfolded state, the distance between the rotation axis C of the third rotation axis 1220 and the rotation axis D of the fourth rotation axis 1222 along the second direction is a second distance L2, and the second distance L2 is smaller than the first distance L1.

[0087] In this embodiment, the first distance L1 is greater than the second distance L2, so that when the hinge mechanism 1 switches to the expanded state, driven by the first connecting rod 120 and the second connecting rod 122, the end of the hinge seat 11 connected to the first connecting rod 120 and the second connecting rod 122 moves along the second direction toward the side close to the opening 20. That is, when the hinge mechanism 1 switches to the expanded state, the hinge seat 11 can move along the first direction toward the other side of the opening 20 while rotating, and can also move along the second direction toward the direction close to the box body 2, so that the door body 3 connected to the hinge seat 11 can move along the first direction toward the other side of the opening 20, and can also move along the second direction toward the direction close to the box body 2, thereby avoiding interference between the door body 3 and the cabinet body, and reducing the overall length of the cooking appliance along the second direction when the door body 3 is open, so as to facilitate users to take and place food.

[0088] Optionally, when the door body 3 is a drop-down door structure, the door body 3 connected to the hinge seat 11 can move upward in a first direction and move toward the box body 2 in a second direction.

[0089] Optionally, when the door body 3 is a pull-down door structure, when the door body 3 closes the opening 20, the second connecting rod 122 is tilted from the third rotating shaft 1220 to the fourth rotating shaft 1222 toward the bottom of the box body 2; when the door body 3 opens the opening 20 (the hinge mechanism 1 is in the expanded state), the second connecting rod 122 is tilted from the third rotating shaft 1220 to the fourth rotating shaft 1222 toward the top of the box body 2.

[0090] Optionally, when the door body 3 is a pull-down door structure, the inclination angle of the second connecting rod 122 relative to the second direction when the door body 3 closes the opening 20 is smaller than the inclination angle of the second connecting rod 122 relative to the second direction when the door body 3 opens the opening 20 (the hinge mechanism 1 is in the expanded state). This allows the door body 3 to move both toward the top of the box body 2 and toward the inside of the box body 2 during the opening process, driven by the first connecting rod 120 and the second connecting rod 122, thereby saving the space required for the rotation of the door body 3.

[0091] Optionally, the first rotating shaft 1200 is located on a side of the third rotating shaft 1220 close to the door body 3 along the second direction.

[0092] Optionally, when the door body 3 closes the opening 20, the rotation axis B of the second rotation axis 1202 is located along the second direction on the side of the rotation axis D of the fourth rotation axis 1222 away from the box body 2; when the hinge mechanism 1 is in the expanded state, the rotation axis B of the second rotation axis 1202 is located along the second direction on the side of the rotation axis D of the fourth rotation axis 1222 away from the box body 2.

[0093] In some embodiments, optionally, the first link 120 includes a groove, a portion of the hinge arm 10 is disposed in the groove and is rotatably connected to the first link 120; and / or the number of the second links 122 is two, and the two second links 122 are located on opposite sides of the hinge arm 10.

[0094] In this embodiment, a portion of the hinge arm 10 is disposed within the groove to achieve a rotational connection with the first link 120. This allows the groove to encompass opposite sides of the hinge arm 10, thereby enhancing the connection strength between the first link 120 and the hinge arm 10. The two second links 122 are located on opposite sides of the hinge arm 10, enhancing the stability of the hinge mechanism 1 during rotation.

[0095] Optionally, one ends of the two second connecting rods 122 are connected.

[0096] like Figures 3 to 5 As shown, in some embodiments, optionally, the hinge mechanism 1 further includes: a first elastic member 15, located at one end of the limit shell 13 away from the hinge arm 10, one end of the first elastic member 15 is connected to the limit shell 13, and the other end is connected to the hinge seat 11; in the process of the hinge mechanism 1 switching from the folded state to the unfolded state, the rotating part 12 drives the limit shell 13 to slide toward the direction close to the hinge arm 10, and the first elastic member 15 is in a stretched state, so that the hinge mechanism 1 hovers at at least one second opening angle; in the process of the hinge mechanism 1 switching from the unfolded state to the folded state, the first elastic member 15 restores its deformation to drive the door body 3 to close the box body 2.

[0097] In this embodiment, the first elastic member 15 is provided on the hinge seat 11, located at one end of the limiting shell 13 away from the hinge arm 10 and rotatably connected to the other end of the limiting shell 13, wherein the limiting shell 13 can slide within the hinge seat 11 under the action of the rotating portion 12 and the first elastic member 15. In the process of pulling the door body 3 to open the opening 20, the rotating portion 12 drives the limiting shell 13 close to the hinge arm 10 so that the first elastic member 15 stretches, and then when the spring tension provided by the first elastic member 15 is equal to the torque generated by the weight of the door body 3, the door body 3 is suspended at the second opening angle. In the process of closing the door body 3, the first elastic member 15 provides tension when retracting, thereby providing assistance for the closing of the door body 3. At the same time, when the spring tension provided by the first elastic member 15 is greater than the torque generated by the weight of the door body 3, the door body 3 can be automatically closed.

[0098] It can be understood that the second opening angle can be multiple.

[0099] Optionally, the first elastic member 15 may be a spring, a spring sheet, elastic rubber, etc.

[0100] It is understandable that the second opening angle can be set according to actual conditions.

[0101] Optionally, when the rotating part 12 includes a first connecting rod 120 and a second connecting rod 122, the limiting shell 13 is rotatably connected to the first connecting rod 120. In the process of pulling the door body 3 to open the opening 20, the first connecting rod 120 drives the limiting shell 13 close to the hinge arm 10 so that the first elastic member 15 is stretched.

[0102] like Figure 4 and Figure 5 As shown, in some embodiments, optionally, the hinge mechanism 1 further includes: a pull rod 16, which is provided on the hinge seat 11, and the two ends of the pull rod 16 are rotatably connected to the rotating part 12 and the limit shell 13 respectively; a second elastic member 17, which is provided on the pull rod 16, and one end of the second elastic member 17 is in contact with the rotating part 12, and the other end is limitedly cooperated with the pull rod 16; the hinge mechanism 1 also has a third opening angle between the unfolded state and the folded state. In the process of the hinge mechanism 1 switching from the third opening angle to the folded state, the second elastic member 17 is in a compressed state, which is used to drive the hinge seat 11 to move so that the hinge mechanism 1 switches and remains in the folded state.

[0103] In this embodiment, the hinge mechanism 1 further includes a pull rod 16 and a second elastic member 17. The two ends of the pull rod 16 are respectively connected to the rotating portion 12 and the limiting shell 13, so that the limiting shell 13 is transmitted to the rotating portion 12 through the pull rod 16. The second elastic member 17 is provided on the pull rod 16. When the door body 3 is at the third opening angle, the second elastic member 17 contacts the rotating portion 12. During the process of the hinge mechanism 1 switching from the third opening angle to the folded state, the rotating portion 12 gradually squeezes the second elastic member 17, causing at least a portion of the second elastic member 17 to deform. Then, the reverse thrust generated by the second elastic member 17 acts on the hinge arm 10, causing the hinge seat 11 to drive the door body 3 to close the opening 20. That is, the provision of the second elastic member 17 provides assistance to the door body 3 in closing the opening 20, thereby realizing automatic locking of the door body 3 during the process of switching from the third opening angle to closing the opening 20.

[0104] like Figure 4 As shown, in some embodiments, optionally, the rotating portion 12 is provided with a cam structure 1204 , and the cam structure 1204 is in contact with the second elastic member 17 to push the second elastic member 17 to compress.

[0105] In this embodiment, the rotating portion 12 is provided with a cam structure 1204. During the rotation of the hinge seat 11, the cam structure 1204 is used to squeeze the second elastic member 17, thereby causing the second elastic member 17 to deform, thereby providing assistance for closing the door body 3.

[0106] Optionally, when the door body 3 closes the opening 20 , the second elastic member 17 contacts the highest point of the cam structure 1204 .

[0107] like Figure 4 As shown, in some embodiments, optionally, the second elastic member 17 includes: a power-assisting rod 170, which is provided on the pull rod 16 and movably connected to the pull rod 16; a rolling portion 172, which is provided at one end of the power-assisting rod 170 close to the hinge arm 10, and the second elastic member 17 contacts the cam structure 1204 through the rolling portion 172; an elastic portion 174, one end of the elastic portion 174 is limitedly matched with the power-assisting rod 170, and the other end of the elastic portion 174 is limitedly matched with the pull rod 16. In the folded state, the elastic portion 174 is in a compressed state.

[0108] In this embodiment, the second elastic member 17 includes a power-assisting rod 170, a rolling portion 172 and an elastic portion 174. The power-assisting rod 170 is arranged on the pull rod 16 and can be movably connected to the pull rod 16. The rolling portion 172 is arranged at the end of the power-assisting rod 170 close to the hinge arm 10, and the elastic portion 174 is arranged on the power-assisting rod 170, and the end of the elastic portion 174 close to the hinge arm 10 is limited by the power-assisting rod 170, and the end of the elastic portion 174 away from the hinge arm 10 is limited by the pull rod 16. In the process of the door body 3 switching from the third opening angle to the closed opening 20, the cam structure 1204 contacts the rolling portion 172 and squeezes the power-assisting rod 170 through the rolling portion 172, so that the power-assisting rod 170 moves in the direction away from the hinge arm 10, thereby compressing the elastic portion 174, and the reverse thrust of the elastic portion 174 is used to assist the door body 3 in closing, thereby realizing the automatic locking function of the door body 3. At the same time, the provision of the rolling portion 172 reduces the friction between the second elastic member 17 and the cam structure 1204 , thereby reducing the degree of wear of the cam structure 1204 and increasing the service life of the hinge mechanism 1 .

[0109] Optionally, a slide groove 130 and a limiting baffle are provided in the pull rod 16 , a through hole is provided in the limiting baffle, and the power rod 170 is provided in the slide groove 130 , passes through the through hole and can move in the through hole.

[0110] Optionally, both ends of the elastic portion 174 are free ends. When the door body 3 is at the third opening angle, the two ends of the elastic portion 174 are in contact with the limiting baffle and the power assist rod 170 respectively to limit the two ends of the elastic portion 174.

[0111] Optionally, the third opening angle can be set according to actual conditions. For example, the third opening angle is less than or equal to 10°, that is, when the door body 3 switches from the state of closing the opening 20 to the third opening angle, the rotation angle is less than or equal to 10°.

[0112] According to one embodiment of the present invention, a cooking utensil is also proposed, comprising: a box body 2 and a door body 3, the box body 2 being provided with an opening 20, and the door body 3 being used to open or close the opening 20; and a hinge mechanism 1 as proposed in any one of the above items, the hinge arm 10 being provided on the box body 2 and being located on one side of the opening 20 along the first direction, the hinge seat 11 being provided on the door body 3, the door body 3 opening the opening 20 in the unfolded state, and closing the opening 20 in the folded state.

[0113] The cooking utensil provided by the present invention comprises the hinge mechanism 1 proposed in any of the above embodiments, and therefore has all the beneficial effects of the hinge mechanism 1 .

[0114] According to an embodiment of the present invention, a cabinet is provided, comprising: a cabinet body; and a cooking utensil as provided in any of the above embodiments, wherein the cooking utensil is embedded in the cabinet body.

[0115] The cabinet provided by the present invention includes the cooking utensil proposed in any of the above embodiments and thus has all the beneficial effects of the cooking utensil.

[0116] According to one embodiment of the present application, in order to improve the movement convenience of the built-in pull-down door oven during the door opening and closing process, the pull-down door track-changing hinge mechanism 1 can allow the door body 3 to not interfere with the cabinet during the door opening and closing process and can be suspended. The hinge mechanism 1 includes a hinge shell (such as a hinge seat 11), a hinge arm 10, a first connecting rod 120, a second connecting rod 122, a limiting shell 13, a pull rod 16, a tension spring (such as a first elastic member 15), a roller (such as a rolling part 172), a compression spring (such as a second elastic member 17), a power rod 170, a compression spring fixing seat (such as a limiting baffle), a damper 14, a bushing, a connecting pin (such as a first rotating shaft 1200, a second rotating shaft 1202, a third rotating shaft 1220 and a fourth rotating shaft 1222), a tension spring adjusting rod, and a tension spring fixing seat. The connection structure of the hinge mechanism 1 is as follows:

[0117] Hinge housing: connected to the door body 3 of the built-in oven, nested on the door body 3, and fixed with screws.

[0118] Hinge arm 10: nested on the box body 2 and restricted in movement by a limit block.

[0119] The first connecting rod 120 connects the hinge housing and the hinge arm 10 via a connecting pin to perform rotational motion.

[0120] The second connecting rod 122 is connected to the hinge housing and the hinge arm 10 via a connecting pin to perform rotational motion.

[0121] Limiting shell 13: The pull rod 16 and the tension spring are connected by a connecting pin. When the door is opened, the pull rod 16 moves with the hinge shell.

[0122] Pull rod 16: connects the first connecting rod 120 and the limiting shell 13 through a connecting pin. When the door is opened, the pull rod 16 moves with the hinge shell.

[0123] Tension spring: connects the limit housing 13 and the tension spring adjustment rod through a connecting pin, and extends or retracts as the pull rod 16 moves.

[0124] Roller: It is located on the power rod 170 and contacts the first connecting rod 120 to perform rolling compression and rebound compression spring.

[0125] Compression spring: compresses and rebounds in the sliding groove 130 on the hinge housing following the roller.

[0126] Power rod 170: provides compression and rebound of the compression spring.

[0127] Compression spring fixing seat: connects the power-assisting rod 170 and the hinge housing to provide limited compression movement at one end of the compression spring.

[0128] The damper 14 is provided between the two plates 132 and can be compressed when the limiting shell 13 moves, thereby playing a role in buffering the door closing.

[0129] Bushing: connects the limiting shell 13 and the hinge shell to limit the left and right positions.

[0130] Connecting pin: connects the hinge arm 10 and the first connecting rod 120, the second connecting rod 122, the hinge housing and the first connecting rod 120, the second connecting rod 122, the limiting housing 13 and the tension spring, and the tension spring and the hinge housing.

[0131] Tension spring adjustment rod: connects the tension spring and the tension spring fixing seat, used to adjust the initial length of the tension spring.

[0132] Extension spring fixing seat: connected to the extension spring adjustment rod and fixed on the hinge housing.

[0133] The hinge housing is screwed into the door body 3, while the hinge arm 10 is nested and secured to the housing 2. The hinge arm 10 and hinge housing are connected to the first and second connecting rods 120 and 122 via connecting pins. This completes the hinge structure, connecting the housing 2 and the door body 3. The hinge structure allows for variable rotation of the door body 3 relative to the housing 2 within a range of 0°-90°. Within an opening and closing range of less than 10°, the compression spring contacts the first connecting rod 120 and compresses, providing a counter-thrust force to adjust the door opening load and provide automatic locking at small angles.

[0134] When the door body 3 is opening the opening 20, the spring tension provided by the extension spring on the hinge mechanism 1 is equal to the torque generated by the weight of the door body 3, and the door body 3 can hover at any angle when the door is opened. When the door body 3 is closing the opening 20, the spring tension provided by the retraction spring is greater than the torque generated by the weight of the door body 3, and the door body 3 can automatically close.

[0135] The first and second connecting rods 120, 122, door body 3, and hinge housing on hinge arm 10 ultimately form a quadrilateral structure. This quadrilateral deformation principle allows the connecting rods to rotate along two axes, achieving both upward and inward movement of the bottom of door body 3, rather than fixed axis movement. This prevents door body 3 from interfering with the cabinet during opening and closing. The damper 14, nested between the two plates 132 of the stop housing 13, compresses and slows the door's closing speed when closing at a small angle, resulting in a gentle and soft closing. The entire hinge mechanism 1 also ensures smooth movement during opening and closing.

[0136] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection; "connected" can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0137] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0138] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hinge mechanism for a cooking appliance, wherein the cooking appliance comprises a box body and a door body, characterized in that: The hinge mechanism comprises: a hinge arm connected to the box; A hinge seat connected to the door body; a rotating portion, wherein the hinge seat is rotatably connected to the hinge arm via the rotating portion, and the hinge mechanism is capable of switching between an unfolded state and a folded state so that the door body opens or closes the box body; A limiting shell is provided on the hinge seat and is movably connected to the rotating part, and the limiting shell can slide relative to the hinge seat as the door body rotates; The damper is provided in the limiting shell and can slide relative to the limiting shell. Along the sliding direction of the limiting shell, the end of the damper away from the hinge arm is limitedly matched with the hinge seat. Wherein, when the hinge mechanism is at a first opening angle, the limit shell contacts the damper at one end close to the hinge arm, and when the hinge mechanism switches from the first opening angle to the folded state, the limit shell slides in a direction away from the hinge arm to cause the damper to be compressed and deformed.

2. The hinge mechanism according to claim 1, wherein: One of the damper and the hinge seat is provided with a limiting hole, and the other is provided with a limiting member, and the limiting member is passed through the limiting hole.

3. The hinge mechanism according to claim 2, wherein: The side wall of the limiting shell is provided with a sliding groove, and the limiting member is passed through the sliding groove and can slide in the sliding groove.

4. The hinge mechanism according to claim 1, wherein: The limiting shell includes at least two plates arranged opposite to each other, one end of the plate along the sliding direction is connected to the rotating part, and the damper is arranged between the two plates.

5. The hinge mechanism according to claim 4, characterized in that: The limiting shell also includes: a first connecting shaft, wherein at least two of the plates are connected at one end thereof close to the hinge arm along the sliding direction, and the damper contacts the first connecting shaft when the hinge mechanism is at the first opening angle; A second connecting shaft is provided, wherein at least two of the plates are connected at one end away from the hinge arm along the sliding direction via the second connecting shaft.

6. The hinge mechanism according to claim 5, characterized in that: A limiting groove is provided on the hinge seat, and the second connecting shaft is slidably connected to the limiting groove.

7. The hinge mechanism according to any one of claims 1 to 6, characterized in that: The box body is provided with an opening, the door body is used to open or close the opening, and the rotating part includes: a first connecting rod, wherein both ends of the first connecting rod are rotatably connected to the hinge seat and the hinge arm respectively, and the limiting housing is rotatably connected to the first connecting rod; a second connecting rod, two ends of which are rotatably connected to the hinge seat and the hinge arm respectively; The hinge arm is located on one side of the opening along the first direction, wherein, during the process of the hinge mechanism switching from the folded state to the unfolded state, the first connecting rod and the second connecting rod drive the door body to move along the first direction toward the other side of the opening through the hinge seat.

8. The hinge mechanism according to claim 7, wherein: The first connecting rod has a first rotating shaft and a second rotating shaft at both ends, and the second connecting rod has a third rotating shaft and a fourth rotating shaft at both ends. The first rotating shaft and the third rotating shaft are both rotatably connected to the hinge arm. Along the first direction, the rotation axis of the first rotating shaft is located on the side of the rotation axis of the third rotating shaft close to the opening. The second rotating shaft and the fourth rotating shaft are both rotatably connected to the hinge seat. Wherein, when the hinge mechanism is in the folded state, along the first direction, the rotation axis of the second rotating shaft is located on the side of the rotation axis of the fourth rotating shaft close to the opening; when the hinge mechanism is in the unfolded state, along the first direction, the rotation axis of the second rotating shaft is located on the side of the rotation axis of the fourth rotating shaft away from the opening.

9. The hinge mechanism according to claim 8, characterized in that: When the hinge mechanism is in the folded state, the distance between the rotation axis of the third rotation shaft and the rotation axis of the fourth rotation shaft along the second direction is a first distance; When the hinge mechanism is in the expanded state, the distance between the rotation axis of the third rotation shaft and the rotation axis of the fourth rotation shaft along the second direction is a second distance, and the second distance is smaller than the first distance.

10. The hinge mechanism according to any one of claims 1 to 6, characterized in that: Also includes: a first elastic member, located at an end of the limiting housing away from the hinge arm, one end of the first elastic member being connected to the limiting housing, and the other end being connected to the hinge seat; When the hinge mechanism switches from the folded state to the unfolded state, the rotating portion drives the limiting shell to slide toward the hinge arm, and the first elastic member is in a stretched state, so that the hinge mechanism is suspended at at least one second opening angle; During the process of the hinge mechanism switching from the unfolded state to the folded state, the first elastic member recovers its deformation to drive the door to close the box.

11. The hinge mechanism according to any one of claims 1 to 6, characterized in that: Also includes: A pull rod is provided on the hinge seat, and both ends of the pull rod are rotatably connected to the rotating part and the limiting shell respectively; a second elastic member, provided on the pull rod, wherein one end of the second elastic member contacts the rotating portion, and the other end is limitedly engaged with the pull rod; The hinge mechanism also has a third opening angle between the unfolded state and the folded state. During the process of the hinge mechanism switching from the third opening angle to the folded state, the second elastic member is in a compressed state, used to drive the hinge seat to move so that the hinge mechanism switches and remains in the folded state.

12. The hinge mechanism according to claim 11, wherein: The rotating portion is provided with a cam structure, and the cam structure is in contact with the second elastic member and is used to push the second elastic member to compress.

13. The hinge mechanism according to claim 12, wherein: The second elastic member includes: A power rod, provided on the pull rod and movably connected to the pull rod; a rolling portion, provided at one end of the power-assisting rod close to the hinge arm, wherein the second elastic member contacts the cam structure through the rolling portion; An elastic part, one end of which is limitedly matched with the power-assisting rod, and the other end of which is limitedly matched with the pull rod. In the folded state, the elastic part is in a compressed state.

14. A cooking utensil, characterized in that: include: A box body and a door body, the box body is provided with an opening, and the door body is used to open or close the opening; and According to the hinge mechanism as described in any one of claims 1 to 13, the hinge arm is provided on the box body and is located on one side of the opening along the first direction, the hinge seat is provided on the door body, the door body opens the opening in the unfolded state, and closes the opening in the folded state.

15. A cabinet, characterized in that: include: Cabinet; and The cooking appliance according to claim 14, wherein the cooking appliance is embedded in the cabinet.

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