Hinge mechanism, cooking utensil and cabinet

Abstract

The utility model provides a hinge mechanism, a cooking utensil and a cupboard. The hinge mechanism comprises a hinge arm, a connecting rod and a connecting rod, a first baffle plate and a second baffle plate are arranged in the hinge seat; the hinge seat is rotationally connected with the hinge arm through the rotating part; the limiting shell is arranged in the hinge base in a sliding mode and movably connected with the rotating part, and a third baffle and a fourth baffle are arranged in the limiting shell; the damper is movably arranged between the third baffle and the fourth baffle in the sliding direction, the damper is located between the first baffle and the second baffle in the sliding direction, and the limiting shell can slide in the hinge base along with rotation of the door body so that the damper can have a first compression state and / or a second compression state. According to the hinge mechanism, buffering in the unfolding process of the hinge mechanism and buffering in the folding process of the hinge mechanism can be achieved, and the problem that collision force is too large or noise is too large in the unfolding and folding processes of the hinge mechanism is solved.

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 first baffle and a second baffle being provided in the hinge seat, the first baffle being located on a side of the second baffle away from the hinge arm; a rotating portion, the hinge seat being rotatably connected to the hinge arm via the rotating portion, the hinge mechanism being capable of switching between an unfolded state and a folded state so as to enable the door body to open or close the box body; a limiting shell being slidably provided in the hinge seat and movably connected to the rotating portion, the limiting shell being provided with a third baffle. The baffle and the fourth baffle are located on the side of the fourth baffle away from the hinge arm along the sliding direction of the limit shell; the damper is movably arranged between the third baffle and the fourth baffle along the sliding direction, and the damper is located between the first baffle and the second baffle along the sliding direction, wherein the limit shell can slide in the hinge seat with the rotation of the door body so that the damper has a first compression state and / or a second compression state, in the first compression state, the two ends of the damper are respectively in contact with the second baffle and the third baffle, and in the second compression state, the two ends of the damper are respectively in contact with the first baffle and the fourth baffle.

[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 via the rotating part, so that the hinge mechanism can switch between an unfolded state and a folded state. The limiting shell is arranged in the hinge seat and is rotatably connected to 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. Specifically, a first baffle and a second baffle are arranged in the hinge seat, and a third baffle and a fourth baffle are arranged in the limiting shell. The damper is movably arranged in the limiting shell and is located between the third baffle and the fourth baffle, and between the first baffle and the second baffle. When the hinge seat rotates relative to the hinge arm, causing the hinge mechanism to switch between the expanded state and the folded state, the rotating part can drive the limit shell to slide in the hinge seat, thereby causing the damper in the limit shell to move with the limit shell, so that the damper is close to the first baffle or close to the second baffle: in the process of the limit shell driving the damper to approach the second baffle, the end of the damper close to the hinge arm gradually approaches the second baffle until the two ends of the damper contact the second baffle and the third baffle respectively. When the limit shell continues to move toward the second baffle, the damper is squeezed by the second baffle and the third baffle, thereby causing the damper to be in the first compression state, and the damper can produce a force that prevents the hinge seat and the hinge arm from continuing to move. The buffering force of continuous rotation causes the hinge seat and the hinge arm to change slowly, thus achieving buffering during the state switching process between the hinge seat and the hinge arm; accordingly, when the limit shell drives the damper to move in the direction close to the first baffle, the end of the damper away from the hinge arm gradually approaches the first baffle until the two ends of the damper contact the first baffle and the fourth baffle respectively. When the limit shell continues to move in the direction of the first baffle, the damper is squeezed by the first baffle and the second baffle, thereby causing the damper to be in a second compressed state. The damper can generate a buffering force to prevent the hinge seat and the hinge arm from continuing to rotate, thereby causing the hinge seat and the hinge arm to change slowly, thus achieving buffering during the state switching process between the hinge seat and the hinge arm. That is, in the hinge mechanism proposed in this application, the damper is placed in the limit shell, and there is no need to limit the damper installation. It can achieve buffering during the unfolding process of the hinge mechanism and buffering during the folding process, thereby avoiding the problem of excessive collision force or excessive noise during the unfolding and folding processes of the hinge mechanism.

[0009] It can be understood 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, so that the damper gradually approaches the second baffle, or the rotating part can drive the limiting shell to slide along the sliding direction toward the direction away from the hinge arm, so that the damper gradually approaches the first baffle.

[0010] Optionally, during the process of switching the hinge mechanism from the deployed state to the folded state, the rotating portion drives the limiting shell to slide along the sliding direction in a direction away from the hinge arm, so that the damper gradually approaches the first baffle, and then the damper can switch to the second compressed state, thereby achieving buffering during the folding process of the hinge mechanism; during the process of switching the hinge mechanism from the folded state to the deployed state, the rotating portion drives the limiting shell to slide along the sliding direction in a direction close to the hinge arm, so that the damper gradually approaches the second baffle, and then the damper can switch to the first compressed state, thereby achieving buffering during the deployment process of the hinge mechanism. It can be understood that the hinge mechanism proposed in this application can achieve buffering of the hinge seat or hinge arm during both the deployment process and the folding process, and thus, when the hinge mechanism is used in a cooking appliance, it can achieve buffering during the door opening process and the door closing process.

[0011] 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.

[0012] The cooking appliance provided by the present invention may also have the following additional technical features:

[0013] In some embodiments, optionally, the hinge mechanism has a first opening angle and a second opening angle between the deployed state and the folded state; in the process of the hinge mechanism switching from the first opening angle to the folded state, the limit shell moves away from the hinge arm along the sliding direction, and the two ends of the damper respectively contact the first baffle and the fourth baffle to put the damper in the second compression state; in the process of the hinge mechanism switching from the second opening angle to the deployed state, the limit shell approaches the hinge arm along the sliding direction, and the two ends of the damper respectively contact the second baffle and the third baffle to put the damper in the first compression state.

[0014] In this embodiment, the hinge mechanism also has a first opening angle and a second opening angle. During the process of the hinge mechanism switching from the first opening angle to the folded state, the rotating part drives the limit shell to slide along the sliding direction away from the hinge arm, and the two ends of the damper are respectively in contact with the first baffle and the fourth baffle, so that the damper is squeezed and deformed by the first baffle and the fourth baffle, thereby achieving buffering in the process of switching from the first opening angle to the folded state during the folding process of the hinge mechanism; during the process of the hinge mechanism switching from the second opening angle to the unfolded state, the rotating part drives the limit shell to slide along the sliding direction toward the hinge arm, and the two ends of the damper are respectively in contact with the second baffle and the third baffle, thereby enabling the damper to be deformed under the squeezing of the second baffle and the third baffle, thereby achieving buffering in the process of switching from the second opening angle to the unfolded state during the unfolding process of the hinge mechanism.

[0015] In some embodiments, optionally, the first baffle and the hinge seat are an integrated structure; and / or the second baffle and the hinge seat are an integrated structure; and / or the third baffle and the limiting shell are an integrated structure, and / or the fourth baffle and the limiting shell are an integrated structure.

[0016] In this embodiment, the first and second baffles can be configured as an integral structure with the hinge base, thereby increasing the connection strength between the first and second baffles and the hinge base, thereby ensuring a compression effect on the damper. The third and fourth baffles can also be configured as an integral structure with the limiting housing, thereby increasing the connection strength between the third and fourth baffles and the hinge arm, thereby ensuring a compression effect on the damper.

[0017] In some embodiments, optionally, the top wall of the hinge seat is provided with at least two through openings, and the first baffle and the second baffle are respectively arranged opposite to the through openings.

[0018] In this embodiment, the top wall of the hinge seat is provided with at least two through openings, and the first baffle and the second baffle are respectively arranged opposite to the through openings, thereby facilitating injection molding or preparation of the first baffle and the second baffle in the hinge seat.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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 a third 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 opening.

[0028] 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 a third 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.

[0029] In some embodiments, optionally, the hinge mechanism further includes: a pull rod, provided on the hinge seat, and both ends of the pull rod are rotatably connected to the rotating part and the limit shell respectively; a second elastic member, provided on the pull rod and movably connected to the pull rod; the hinge mechanism also has a fourth opening angle between the unfolded state and the folded state. When the hinge mechanism is at the fourth opening angle, the second elastic member contacts the rotating part. In the process of the hinge mechanism switching from the fourth 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.

[0030] 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 fourth opening angle, the second elastic member contacts the rotating portion. During the process of the hinge mechanism switching from the fourth 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 fourth opening angle to the closed opening.

[0031] 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.

[0032] 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.

[0033] 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 the end of the elastic portion close to the hinge arm is limitedly cooperated with the power-assisting rod, and the end of the elastic portion away from the hinge arm is limitedly cooperated with the pull rod, and in the folded state, the elastic portion is in a compressed state.

[0034] 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 fourth 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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

[0040] 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:

[0041] Figure 1 One of the structural schematic diagrams of the hinge mechanism of one embodiment of the present utility model is shown;

[0042] Figure 2 The second structural diagram of the hinge mechanism of one embodiment of the present invention is shown;

[0043] Figure 3A schematic structural diagram showing a hinge mechanism in a folded state according to an embodiment of the present invention is shown;

[0044] 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;

[0045] Figure 5 A schematic structural diagram showing a hinge mechanism in an expanded state according to an embodiment of the present invention is shown;

[0046] Figure 6 One of the structural schematic diagrams of a cooking utensil according to an embodiment of the present invention is shown;

[0047] Figure 7 Shown Figure 6 A schematic diagram of a portion of the structure of a cooking appliance according to the illustrated embodiment;

[0048] Figure 8 A second structural diagram of a cooking utensil according to an embodiment of the present invention is shown;

[0049] Figure 9 Shown Figure 8 A schematic diagram of a portion of the structure of a cooking appliance according to the embodiment shown.

[0050] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names is as follows:

[0051] 1 Hinge mechanism, 10 Hinge arm, 11 Hinge seat, 110 First baffle, 112 Second baffle, 114 Through port, 12 Rotating portion, 120 First connecting rod, 1200 First rotating shaft, 1202 Second rotating shaft, 1204 Groove, 1206 Cam structure, 122 Second connecting rod, 1220 Third rotating shaft, 1222 Fourth rotating shaft, 13 Limiting shell, 130 Third baffle, 132 Fourth baffle, 14 Damper, 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

[0052] 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.

[0053] 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.

[0054] 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.

[0055] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, according to an embodiment of the present invention, the present invention proposes a hinge mechanism 1 for a cooking utensil, which includes a box body 2 and a door body 3, and the box body 2 and the door body 3 are rotatably connected by the hinge mechanism 1. The hinge mechanism 1 includes: a hinge arm 10, which is connected to the box body 2; a hinge seat 11, which is connected to the door body 3, and a first baffle 110 and a second baffle 112 are provided in the hinge seat 11, and the first baffle 110 is located on the side of the second baffle 112 away from the hinge arm 10; a rotating part 12, the hinge seat 11 is rotatably connected to the hinge arm 10 through the rotating part 12, and the hinge mechanism 1 can switch between an unfolded state and a folded state to enable the door body to open or close the box body; a limiting shell 13, which is slidably arranged in the hinge seat 11 and movably connected to the rotating part 12, and the limiting shell A third baffle 130 and a fourth baffle 132 are provided in 13, and along the sliding direction of the limit shell 13, the third baffle 130 is located on the side of the fourth baffle 132 away from the hinge arm 10; the damper 14 is movably provided between the third baffle 130 and the fourth baffle 132 along the sliding direction, and the damper 14 is located between the first baffle 110 and the second baffle 112 along the sliding direction, wherein the limit shell 13 can slide in the hinge seat 11 as the door body 3 rotates, so that the damper 14 has a first compression state and / or a second compression state, in the first compression state, the two ends of the damper 14 are in contact with the second baffle 112 and the third baffle 130 respectively, and in the second compression state, the two ends of the damper 14 are in contact with the first baffle 110 and the fourth baffle 132 respectively.

[0056] The hinge mechanism 1 provided by the present invention includes a hinge arm 10, a hinge seat 11, a rotating part 12 and a limiting shell 13. The hinge seat 11 and the hinge arm 10 are rotatably connected through the rotating part 12, so that the hinge mechanism 1 can switch between the unfolded state and the folded state. The limiting shell 13 is arranged in the hinge seat 11 and is rotatably connected to the rotating part 12, so that during the state switching of the hinge mechanism 1, the limiting shell 13 can slide under the drive of the rotating part 12. Among them, the hinge seat 11 is provided with a first baffle 110 and a second baffle 112, and the limiting shell 13 is provided with a third baffle 130 and a fourth baffle 132. The damper 14 is movably arranged in the limiting shell 13 and is located between the third baffle 130 and the fourth baffle 132, and is located between the first baffle 110 and the second baffle 112. When the hinge seat 11 rotates relative to the hinge arm 10, so that the hinge mechanism 1 switches between the unfolded state and the folded state, the rotating part 12 can drive the limiting shell 13 to slide in the hinge seat 11, thereby causing the damper 14 in the limiting shell 13 to move with the limiting shell 13, so that the damper 14 is close to the first baffle 110 or close to the second baffle 112: in the process of the limiting shell 13 driving the damper 14 to approach the second baffle 112, the end of the damper 14 close to the hinge arm 10 gradually approaches the second baffle 112 until the two ends of the damper 14 are in contact with the second baffle 112 and the third baffle 130 respectively. When the limiting shell 13 continues to move toward the second baffle 112, the damper 14 is squeezed by the second baffle 112 and the third baffle 130, thereby causing the damper 14 to be in a first compression state. The damper 14 can produce a force that prevents the hinge seat 11 and the hinge arm 1 from moving. 0, the buffering force of continuing to rotate between the hinge seat 11 and the hinge arm 10 causes the hinge seat 11 and the hinge arm 10 to change slowly, thereby realizing buffering during the state switching process of the hinge seat 11 and the hinge arm 10; accordingly, when the limit shell 13 drives the damper 14 to move in the direction close to the first baffle 110, the end of the damper 14 away from the hinge arm 10 gradually approaches the first baffle 110 until the two ends of the damper 14 contact the first baffle 110 and the fourth baffle 132 respectively. When the limit shell 13 continues to move toward the first baffle 110, the damper 14 is squeezed by the first baffle 110 and the second baffle 112, thereby causing the damper 14 to be in a second compressed state. The damper 14 can generate a buffering force to prevent the hinge seat 11 and the hinge arm 10 from continuing to rotate, thereby causing the hinge seat 11 and the hinge arm 10 to change slowly, thereby realizing buffering during the state switching process of the hinge seat 11 and the hinge arm 10. That is, in the hinge mechanism 1 proposed in the present application, the damper 14 is placed in the limit shell 13, and there is no need to limit the installation of the damper 14. This can achieve buffering during the unfolding process of the hinge mechanism 1, as well as buffering during the folding process, and avoid the problem of excessive collision force or excessive noise during the unfolding and folding process of the hinge mechanism 1.

[0057] 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, so that the damper 14 gradually approaches the second baffle 112, or the rotating part 12 can drive the limiting shell 13 to slide along the sliding direction toward the direction away from the hinge arm 10, so that the damper 14 gradually approaches the first baffle 110.

[0058] Alternatively, as Figure 3 、 Figure 4 and Figure 5 As shown, during the process of switching the hinge mechanism 1 from the deployed state to the folded state, the rotating portion 12 drives the limiting housing 13 to slide along the sliding direction away from the hinge arm 10, so that the damper 14 gradually approaches the first baffle 110, and then the damper 14 can switch to the second compressed state, thereby achieving cushioning during the folding process of the hinge mechanism 1; during the process of switching the hinge mechanism 1 from the folded state to the deployed state, the rotating portion 12 drives the limiting housing 13 to slide along the sliding direction toward the hinge arm 10, so that the damper 14 gradually approaches the second baffle 112, and then the damper 14 can switch to the first compressed state, thereby achieving cushioning during the deployment process of the hinge mechanism 1. It can be understood that the hinge mechanism 1 proposed in this application can achieve cushioning of the hinge base 11 or the hinge arm 10 during both the deployment process and the folding process. Therefore, when the hinge mechanism 1 is used in a cooking appliance, it can achieve cushioning during the opening process of the door body 3 and the closing process of the door body 3.

[0059] 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 .

[0060] In some embodiments, optionally, the hinge mechanism 1 has a first opening angle and a second opening angle between the unfolded state and the folded state; in the process of the hinge mechanism 1 switching from the first opening angle to the folded state, the limit shell 13 moves away from the hinge arm 10 along the sliding direction, and the two ends of the damper 14 respectively contact the first baffle 110 and the fourth baffle 132, so that the damper 14 is in the second compression state; in the process of the hinge mechanism 1 switching from the second opening angle to the unfolded state, the limit shell 13 approaches the hinge arm 10 along the sliding direction, and the two ends of the damper 14 respectively contact the second baffle 112 and the third baffle 130, so that the damper 14 is in the first compression state.

[0061] In this embodiment, the hinge mechanism 1 also has a first opening angle and a second opening angle. During the process of the hinge mechanism 1 switching from the first opening angle 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, and the two ends of the damper 14 are respectively in contact with the first baffle 110 and the fourth baffle 132, so that the damper 14 is squeezed and deformed by the first baffle 110 and the fourth baffle 132, thereby achieving buffering in the process of the hinge mechanism 1 switching from the first opening angle to the folded state during folding; during the process of the hinge mechanism 1 switching from the second opening angle to the unfolded state, the rotating part 12 drives the limiting shell 13 to slide along the sliding direction toward the hinge arm 10, and the two ends of the damper 14 are respectively in contact with the second baffle 112 and the third baffle 130, thereby enabling the damper 14 to be deformed under the squeezing of the second baffle 112 and the third baffle 130, thereby achieving buffering in the process of the hinge mechanism 1 switching from the second opening angle to the unfolded state during unfolding.

[0062] It can be understood that, in the process of switching the hinge mechanism 1 from the unfolded state to the folded state, the limit shell 13 slides in the direction away from the hinge arm 10, and when the hinge mechanism 1 is at the first opening angle, the two ends of the damper 14 are in contact with the first baffle 110 and the fourth baffle 132 respectively. Therefore, in the process of switching the hinge mechanism 1 from the first opening angle to the folded state, the limit shell 13 continues to slide in the direction away from the hinge arm 10, so that the first baffle 110 and the fourth baffle 132 squeeze the damper 14, thereby achieving buffering in the process of switching from the first opening angle to the folded state. During the transition from the folded state to the unfolded state, the limiting housing 13 slides toward the hinge arm 10, gradually increasing the distance between the first baffle 110 and the fourth baffle 132, and thereby gradually releasing the damper 14. When the hinge mechanism 1 is at the second opening angle, the two ends of the damper 14 contact the second baffle 112 and the third baffle 130, respectively. Therefore, during the transition from the second opening angle to the unfolded state, the limiting housing 13 continues to slide toward the hinge arm 10, causing the second baffle 112 and the third baffle 130 to squeeze the damper 14, thereby providing a buffer during the transition from the second opening angle to the unfolded state. In other words, the provision of the damper 14 provides a buffer during small-angle unfolding and small-angle folding, thereby reducing the impact force and noise generated by the hinge mechanism 1.

[0063] It is understandable that the first opening angle and the second opening angle can be set according to actual conditions.

[0064] It should be noted that when the hinge mechanism 1 is at the first opening angle, the angle between the hinge arm 10 and the hinge seat 11 is the first opening angle; when the hinge mechanism 1 is at the second opening angle, the angle between the hinge arm 10 and the hinge seat 11 is the second opening angle.

[0065] It can be understood that the second opening angle is greater than the first opening angle.

[0066] Optionally, there is a gap between the first baffle 110 and the third baffle 130, and a gap between the second baffle 112 and the fourth baffle 132 to avoid interference between the first baffle 110 and the third baffle 130 and to avoid interference between the second baffle 112 and the fourth baffle 132 during movement of the limiting shell 13.

[0067] In some embodiments, optionally, the first baffle 110 and the hinge seat 11 are an integral structure; and / or the second baffle 112 and the hinge seat 11 are an integral structure; and / or the third baffle 130 and the limiting shell 13 are an integral structure, and / or the fourth baffle 132 and the limiting shell 13 are an integral structure.

[0068] In this embodiment, the first baffle 110 and the second baffle 112 can be configured as an integral structure with the hinge base 11, thereby improving the connection strength between the first baffle 110, the second baffle 112 and the hinge base 11, thereby ensuring the compression effect on the damper 14. The third baffle 130 and the fourth baffle 132 can also be configured as an integral structure with the limiting housing 13, thereby improving the connection strength between the third baffle 130, the fourth baffle 132 and the hinge arm 10, thereby ensuring the compression effect on the damper 14.

[0069] In some embodiments, optionally, the top wall of the hinge base 11 is provided with at least two through openings 114 , and the first baffle 110 and the second baffle 112 are respectively arranged opposite to the through openings 114 .

[0070] In this embodiment, the top wall of the hinge seat 11 is provided with at least two through openings 114 , and the first baffle 110 and the second baffle 112 are respectively arranged opposite to the through openings 114 , thereby facilitating injection molding or preparation of the first baffle 110 and the second baffle 112 in the hinge seat 11 .

[0071] like Figure 6 、 Figure 7 、 Figure 8 and Figure 9As 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.

[0072] 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.

[0073] Optionally, the door body 3 opens the opening 20 in the unfolded state, and closes the opening 20 in the folded state.

[0074] like Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 9As 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] like Figure 3 and Figure 5 As 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] like Figure 2 As shown, in some embodiments, optionally, the first link 120 includes a groove 1204, a portion of the hinge arm 10 is disposed in the groove 1204 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.

[0086] In this embodiment, a portion of the hinge arm 10 is disposed within the groove 1204 to achieve a rotational connection with the first link 120. The groove 1204 surrounds 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.

[0087] like Figure 3 、 Figure 4 and Figure 5 As shown, in some embodiments, optionally, the hinge mechanism 1 further comprises: a first elastic member 15, located at one end of the limiting shell 13 away from the hinge arm 10, one end of the first elastic member 15 being connected to the limiting shell 13, and the other end being 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 limiting 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 a third opening angle; in the process of the hinge mechanism 1 switching from the unfolded state to the folded state, the first elastic member 15 recovers its deformation to drive the door body 3 to close the opening 20.

[0088] In this embodiment, the first elastic member 15 is provided on the hinge seat 11, located at one end of the limiting housing 13 away from the hinge arm 10 and rotatably connected to the other end of the limiting housing 13, wherein the limiting housing 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 housing 13 close to the hinge arm 10 to stretch the first elastic member 15. 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 third 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.

[0089] It can be understood that the third opening angle can be multiple.

[0090] Optionally, the first elastic member 15 may be a spring, a spring sheet, elastic rubber, etc.

[0091] It is understandable that the third opening angle can be set according to actual conditions.

[0092] 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.

[0093] like Figure 2 and Figure 6 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 movably connected to the pull rod 16; the hinge mechanism 1 also has a fourth opening angle between the unfolded state and the folded state. When the hinge mechanism 1 is at the fourth opening angle, the second elastic member 17 contacts the rotating part 12. In the process of the hinge mechanism 1 switching from the fourth 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 to and remains in the folded state.

[0094] 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 being 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 fourth opening angle, the second elastic member 17 contacts the rotating portion 12. During the process of the hinge mechanism 1 switching from the fourth 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 fourth opening angle to closing the opening 20.

[0095] like Figure 3 As shown, in some embodiments, optionally, the rotating portion 12 is provided with a cam structure 1206 , and the cam structure 1206 is in contact with the second elastic member 17 to push the second elastic member 17 to compress.

[0096] In this embodiment, the rotating part 12 is provided with a cam structure 1206. During the rotation of the hinge seat 11, the cam structure 1206 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.

[0097] Optionally, when the door body 3 closes the opening 20 , the second elastic member 17 contacts the highest point of the cam structure 1206 .

[0098] like Figure 3 and 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 1206 through the rolling portion 172; an elastic portion 174, the elastic portion 174 is limitedly cooperated with the power-assisting rod 170 at one end close to the hinge arm 10, and the elastic portion 174 is limitedly cooperated with the pull rod 16 at one end away from the hinge arm 10. In the folded state, the elastic portion 174 is in a compressed state.

[0099] 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 fourth opening angle to the closed opening 20, the cam structure 1206 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 1206 , thereby reducing the degree of wear of the cam structure 1206 and increasing the service life of the hinge mechanism 1 .

[0100] Optionally, a slide groove 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, and passes through the through hole and can move in the through hole.

[0101] Optionally, both ends of the elastic portion 174 are free ends. When the door body 3 is at the fourth 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.

[0102] Optionally, the fourth opening angle can be set according to actual conditions. For example, the fourth 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 fourth opening angle, the rotation angle is less than or equal to 10°.

[0103] 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.

[0104] 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 .

[0105] 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.

[0106] 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.

[0107] 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 hover without interfering with the cabinet during the door opening and closing process. 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 (the specific number can be two, respectively on both sides of the hinge arm 10), a limit 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, 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:

[0108] Hinge housing: connected to the door body 3 of the built-in oven, nested on the door body 3, and fixed with screws.

[0109] Hinge arm 10: nested on the box body 2 and restricted in movement by a limit block.

[0110] The first connecting rod 120 connects the hinge housing and the hinge arm 10 via a connecting pin to perform rotational motion.

[0111] The second connecting rod 122 is connected to the hinge housing and the hinge arm 10 via a connecting pin to perform rotational motion.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] Roller: It is located on the power rod 170 and contacts the first connecting rod 120 to perform rolling compression and rebound compression spring.

[0116] Compression spring: compresses and rebounds in the groove on the hinge housing following the roller.

[0117] Power rod 170: provides compression and rebound of the compression spring.

[0118] 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.

[0119] The damper 14 is provided on the limiting housing 13 and can move along with the limiting housing 13 .

[0120] Bushing: It is sleeved on the outside of the connecting pin to realize the rotational connection between the first connecting rod 120, the second connecting rod 122 and the connecting arm or the hinge seat 11.

[0121] 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.

[0122] Tension spring adjustment rod: connects the tension spring and the tension spring fixing seat, used to adjust the initial length of the tension spring.

[0123] Extension spring fixing seat: connected to the extension spring adjustment rod and fixed on the hinge housing.

[0124] 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.

[0125] 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.

[0126] 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, enabling the bottom of door body 3 to move upward and inward, rather than moving along a fixed axis. This prevents door body 3 from interfering with the cabinet during opening and closing. A damper 14, located within the limiting housing 13, compresses and slows the door's closing speed when closing at a small angle, resulting in a gentle, soft closing. The entire hinge mechanism 1 also ensures smooth movement during opening and closing.

[0127] 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.

[0128] 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.

[0129] 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, wherein a first baffle and a second baffle are provided in the hinge seat, wherein the first baffle is located on a side of the second baffle away from the hinge arm; 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 slidably disposed in the hinge seat and movably connected to the rotating portion, wherein a third baffle and a fourth baffle are provided in the limiting shell, and along the sliding direction of the limiting shell, the third baffle is located on a side of the fourth baffle away from the hinge arm; a damper movably disposed between the third baffle and the fourth baffle along the sliding direction, and the damper is located between the first baffle and the second baffle along the sliding direction, In which, the limit shell can slide in the hinge seat as the door body rotates, so that the damper has a first compression state and / or a second compression state. In the first compression state, the two ends of the damper are in contact with the second baffle and the third baffle respectively. In the second compression state, the two ends of the damper are in contact with the first baffle and the fourth baffle respectively.

2. The hinge mechanism according to claim 1, wherein: The hinge mechanism has a first opening angle and a second opening angle between the unfolded state and the folded state; When the hinge mechanism switches from the first opening angle to the folded state, the limiting shell moves away from the hinge arm along the sliding direction, and both ends of the damper contact the first baffle and the fourth baffle respectively, so that the damper is in the second compressed state; During the process of the hinge mechanism switching from the second opening angle to the unfolded state, the limit shell approaches the hinge arm along the sliding direction, and the two ends of the damper contact the second baffle and the third baffle respectively, so that the damper is in the first compression state.

3. The hinge mechanism according to claim 1, wherein: The first baffle and the hinge seat are an integrated structure; and / or the second baffle and the hinge seat are an integrated structure; and / or The third baffle and the limiting shell are an integrated structure, and / or the fourth baffle and the limiting shell are an integrated structure.

4. The hinge mechanism according to claim 1, wherein: The top wall of the hinge seat is provided with at least two through openings, and the first baffle and the second baffle are respectively arranged opposite to the through openings.

5. The hinge mechanism according to any one of claims 1 to 4, 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.

6. The hinge mechanism according to claim 5, characterized in that: 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.

7. The hinge mechanism according to claim 6, wherein: 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.

8. The hinge mechanism according to claim 5, wherein: The first connecting rod comprises a groove, a portion of the hinge arm is disposed in the groove and is rotatably connected to the first connecting rod; and / or There are two second connecting rods, and the two second connecting rods are located on two opposite sides of the hinge arm.

9. The hinge mechanism according to claim 5, wherein: 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 third 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 body to close the opening.

10. The hinge mechanism according to any one of claims 1 to 4, 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 and movably connected to the pull rod; The hinge mechanism also has a fourth opening angle between the unfolded state and the folded state. When the hinge mechanism is at the fourth opening angle, the second elastic member is in contact with the rotating part. During the process of the hinge mechanism switching from the fourth 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.

11. The hinge mechanism according to claim 10, 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.

12. The hinge mechanism according to claim 11, 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, wherein one end of the elastic part close to the hinge arm is limitedly matched with the power rod, and one end of the elastic part away from the hinge arm is limitedly matched with the pull rod. In the folded state, the elastic part is in a compressed state.

13. 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 12, 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.

14. A cabinet, characterized in that: include: Cabinet; and The cooking appliance according to claim 13, wherein the cooking appliance is embedded in the cabinet.

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