Cooking utensil

Abstract

The utility model provides a cooking utensil. The cooking utensil comprises a box body; a door body; the door body is connected with the refrigerator body through the hinge device, and the hinge device comprises a shell fixedly connected with the door body; the hinge arm is fixedly connected with the box body; the two ends of the first connecting rod are rotationally connected with the shell and the hinge arm respectively, and the position where the first connecting rod is rotationally connected with the shell is a first hinge point; the two ends of the second connecting rod are rotationally connected with the shell and the hinge arm respectively, the position where the second connecting rod is rotationally connected with the shell is a second hinge point, and a gap is formed between the first hinge point and the second hinge point; the pull rod assembly is mounted in the shell; and the tension spring assembly is installed in the shell, the two ends of the tension spring assembly are connected with the second connecting rod and the tension spring assembly correspondingly, and in the process that the door body opens the box body, the tension spring assembly applies tension to the pull rod assembly. When the door is opened, the door moves along the direction deviating from the bottom of the cupboard and towards the box body in a track-changing manner, so that the required reserved distance between the door body and the cupboard is reduced, and the attractiveness of the product is improved.

Description

Technical Field

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

[0002] The built-in oven in the related technology includes a box body and a door body. The door body is connected to the box body through a fixed rotating shaft. When opening and closing the door, the rotation radius of the door body around the rotating shaft is uniquely determined. During the process of opening and closing the door, the door body rotates downward around the axis of the rotating shaft. In order to avoid interference between the door body and the cabinet, a large distance needs to be reserved between the door body and the cabinet, which will cause a large gap between the product and the cabinet and affect the aesthetics. 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] Therefore, the utility model provides a cooking utensil.

[0005] To achieve at least one of the above-mentioned purposes, the present invention proposes a cooking utensil, comprising: a box body; a door body, the door body being used to open or close the box body; a hinge device, the door body being connected to the box body via the hinge device, the hinge device comprising: a shell body, fixedly connected to the door body; a hinge arm, fixedly connected to the box body; a first connecting rod, the two ends of the first connecting rod being rotatably connected to the shell body and the hinge arm, the position where the first connecting rod is rotatably connected to the shell body is a first hinge point; a second connecting rod, the two ends of the second connecting rod being rotatably connected to the shell body and the hinge arm, the second connecting rod The position where the rod is rotatably connected to the shell is the second hinge point, and there is a distance between the first hinge point and the second hinge point; the pull rod assembly is installed in the shell; the tension spring assembly is installed in the shell, and the two ends of the pull rod assembly are respectively connected to the second connecting rod and the tension spring assembly, and the tension spring assembly is connected to the end of the shell away from the second connecting rod. In the process of the door body opening the box body, the tension spring assembly applies a pulling force to the pull rod assembly in a direction away from the second connecting rod; the damper is installed on the pull rod assembly, and when the door body closes the box body, the damper is used to reduce the rotation speed of the door body.

[0006] The cooking appliance proposed in this application can be embedded in a cabinet. The cooking appliance includes a housing, a door, and a hinge device. The door is connected to the housing via the hinge device and can rotate relative to the housing to open or close the housing. The bottom of the door is connected to the housing. Understandably, when the door opens the housing, a certain distance must be left between the door and the bottom wall of the cabinet where the cooking appliance is located to avoid interference between the bottom of the door and the cabinet during rotation. To reduce the distance between the bottom of the door and the bottom of the cabinet, this application provides a hinge device in the cooking appliance.

[0007] Furthermore, the hinge device includes a housing, a hinge arm, a first connecting rod, and a second connecting rod. The housing is a hollow structure fixedly connected to the door body, and the hinge arm is fixedly connected to the cabinet. The first connecting rod and the second connecting rod are used to connect the housing to the hinge arm to achieve the connection between the door body and the cabinet. Specifically, the two ends of the first connecting rod are respectively rotatably connected to the housing and the hinge arm, and the two ends of the second connecting rod are respectively rotatably connected to the housing and the hinge arm. In this way, the housing, the hinge arm, the first connecting rod, and the second connecting rod form a quadrilateral structure. When the door body rotates relative to the cabinet, the door body drives the housing to rotate relative to the first and second connecting rods, and the first and second connecting rods rotate relative to the hinge arm. The quadrilateral separation satisfies the biaxial rotational motion, so that when the cabinet is opened, the door body moves in a direction away from the bottom of the cabinet and in a direction toward the cabinet, rather than moving along a fixed axis. This ensures that the door body does not interfere with the cabinet during the opening or closing process. This reduces the distance required between the door body and the cabinet, improving the product's aesthetics.

[0008] Furthermore, the location where the first link is rotatably connected to the housing is a first hinge point, and the location where the second link is rotatably connected to the housing is a second hinge point, with a distance between the first hinge point and the second hinge point. This prevents the first hinge point from overlapping the second hinge point, so that the housing, hinge arm, first link, and second link form a quadrilateral structure.

[0009] Furthermore, the hinge device includes a pull rod assembly and a tension spring assembly. When the door opens from the housing, the tension spring assembly is stretched, exerting a tension force on the door that overcomes the weight of the door, allowing the door to hover or automatically close. Specifically, the pull rod assembly is mounted within the housing, with one end of the pull rod assembly connected to the second connecting rod, and the pull rod assembly is rotationally connected to the second connecting rod. The tension spring assembly is mounted within the housing, with the end of the pull rod assembly distal to the second connecting rod connected to the tension spring assembly, and the pull rod assembly is rotationally connected to the tension spring assembly. The end of the tension spring assembly distal to the pull rod assembly is connected to the end of the housing distal to the second connecting rod. During the process of the door opening from the housing, at least a portion of the tension spring assembly is stretched, generating a tension force on the pull rod assembly. This tension force is then applied to the door via the pull rod assembly and the second connecting rod. The tension force is directed away from the second connecting rod, i.e., the tension force has an upward component. The torque generated by the tension of the tension spring assembly is capable of overcoming the gravitational torque of the door, thereby enabling the door to remain suspended when the door opens from the housing. Furthermore, when the angle between the door body and the box body is small, the gravity moment of the door body is small, and the torque formed by the tension of the tension spring assembly is greater than the gravity moment of the door body. At this time, automatic door closing at a small angle can be achieved.

[0010] Furthermore, the hinge device also includes a damper, which is installed on the pull rod assembly. When the door body closes the box body, the damper is compressed to slow down the closing speed, so as to achieve the technical effect of closing the door quietly and slowly.

[0011] The cooking utensil described above according to the present invention may also have the following distinguishing technical features:

[0012] In some technical solutions, optionally, when the angle between the door body and the box body is greater than the first critical angle and less than 90°, the torque of the tension spring assembly on the pull rod assembly is equal to the torque of the gravity of the door body, so that the door body hovers.

[0013] In this technical solution, the effect of the tension spring assembly on the door body is further limited. The tension spring assembly can achieve the technical effect of the door body hovering when the door is opened. In the process of the door body opening the box body, the tension spring assembly generates a pulling force on the pull rod assembly, and then the pulling force is applied to the door body through the pull rod assembly and the second connecting rod. The direction of the pulling force is in the direction away from the second connecting rod, that is, the pulling force has an upward component. When the angle between the door body and the box body is greater than the first critical angle and less than 90°, the torque generated by the tension of the tension spring assembly is equal to the gravity torque of the door body, so that the torque generated by the tension of the tension spring assembly can overcome the gravity torque of the door body, thereby enabling the door body to hover, thereby improving the user's convenience.

[0014] In some technical solutions, optionally, when the angle between the door body and the box body is less than or equal to a first critical angle, the torque of the tension spring assembly on the pull rod assembly is greater than the torque of the gravity of the door body, so that the door body automatically closes the box body.

[0015] In this technical solution, the effect of the tension spring assembly on the door body is further limited. The tension spring assembly can also achieve the technical effect that the door body can automatically close at a small angle. In the process of the door body opening the box body, the tension spring assembly generates a pulling force on the pull rod assembly, and then the pulling force is applied to the door body through the pull rod assembly and the second connecting rod. The direction of the pulling force is in the direction away from the second connecting rod, that is, the pulling force has an upward component. It can be understood that the smaller the angle between the door body and the box body, the smaller the gravity torque of the door body. When the angle between the door body and the box body is less than or equal to the first critical angle, the torque of the tension spring assembly on the pull rod assembly is greater than the gravity torque of the door body, so that the door body automatically closes the box body. When the user mistakenly opens the door body or the door body is rotated to a position with a smaller angle with the door body, the door can be automatically closed without the user continuing to operate, thereby improving the reliability and convenience of use of the cooking appliance.

[0016] In some technical solutions, optionally, the pull rod assembly includes: a first pull rod, one end of which is connected to the second connecting rod; a second pull rod, both ends of which are respectively connected to the first pull rod and the tension spring assembly, and the second pull rod has an installation groove, which is used to install the damper.

[0017] In this technical solution, the structure of the pull rod assembly is defined. The pull rod assembly is a multi-section structure, and the pull rod assembly includes a first pull rod and a second pull rod. Among them, one end of the first pull rod is rotatably connected to the second connecting rod, and the first pull rod and the second connecting rod are rotatably connected. The two ends of the second pull rod are respectively connected to the first pull rod and the tension spring assembly. One end of the second pull rod is rotatably connected to the first pull rod, and the other end is rotatably connected to the tension spring assembly. In the process of the door body opening the box body, the tension spring assembly is stretched, the tension spring assembly applies tension to the second pull rod, and the second pull rod applies tension to the first pull rod. The first pull rod transmits the tension to the shell through the second connecting rod. Since the shell is fixedly mounted on the door body, the tension is further transmitted to the door body, so that the tension torque formed by the tension spring assembly can overcome the gravity torque of the door body itself, so that the door body can hover when the box body is opened, and the door body can automatically close when the box body is closed at a small angle.

[0018] Furthermore, the second pull rod has a mounting groove for mounting a damper, wherein at least a portion of the damper is located in the mounting groove. When the door body closes the box body, the damper is compressed to slow down the door closing speed, thereby achieving a technical effect of soft and gentle door closing.

[0019] In some technical solutions, optionally, the cooking appliance also includes: a compression spring assembly installed on the shell, a part of the compression spring assembly can be extended and retracted, when the angle between the door body and the box body is less than or equal to the second critical angle, the compression spring assembly contacts the second connecting rod and applies a thrust to the second connecting rod, when the angle between the door body and the box body is greater than the second critical angle, the compression spring assembly separates from the second connecting rod.

[0020] This technical solution further defines the structure of the cooking appliance. The cooking appliance also includes a compression spring assembly mounted on the housing. When the angle between the door and the housing is small, the compression spring assembly can contact and apply a thrust to the second connecting rod, thereby achieving the door's small-angle automatic locking function. Specifically, when the angle between the door and the housing is less than or equal to the second critical angle, the opening angle between the door and the housing is small. At this time, the compression spring assembly contacts the second connecting rod, compresses the compression spring assembly, and applies a thrust to the second connecting rod, thereby achieving the door's small-angle automatic locking function.

[0021] Furthermore, when the angle between the door body and the box body is greater than a second critical angle, the compression spring assembly separates from the second connecting rod and the compression spring assembly no longer applies thrust to the second connecting rod.

[0022] In some technical solutions, optionally, the compression spring assembly includes: a mounting seat, located inside the shell, the mounting seat is fixedly connected to the shell; a movable seat, having a mounting rod, the mounting rod is movably connected to the mounting seat, and the movable seat can move back and forth in a direction toward or away from the mounting seat; a compression spring, mounted on the mounting rod and abutting against the mounting seat; a contact piece, mounted on the movable seat, when the angle between the door body and the box body is less than or equal to the second critical angle, the contact piece contacts the second connecting rod, and the compression spring is compressed; when the angle between the door body and the box body is greater than the second critical angle, the contact piece separates from the second connecting rod, and the compression spring returns to an uncompressed state.

[0023] In this technical solution, the structure of the compression spring assembly is defined. The compression spring assembly includes a mounting seat, a compression spring, a movable seat and a contact member, wherein the mounting seat is used to mount the movable seat, the movable seat is used to mount the compression spring and the contact member, and the compression spring is used to apply thrust to the movable seat, and then apply the thrust to the second connecting rod through the contact member. Specifically, the mounting seat is located inside the shell, and the mounting seat is fixedly connected to the shell. The movable seat is movably mounted on the mounting seat and can move relative to the mounting seat. The movable seat has a mounting rod, which extends in a direction toward the mounting seat and is movably connected to the mounting seat, and the movable seat can move back and forth in a direction toward or away from the mounting seat. The compression spring is mounted on the mounting rod, and one end of the compression spring abuts against the mounting seat. When the movable seat moves in a direction toward the mounting seat, the compression spring is compressed, and when the movable seat moves in a direction away from the mounting seat, the compression spring returns to its original state. When the compression spring is compressed, the compression spring generates thrust on the movable seat, and the movable seat applies the thrust to the second connecting rod through the contact member. When the contact member is separated from the second connecting rod, the compression spring returns to an uncompressed state, the compression spring is no longer compressed, and the compression spring assembly no longer generates thrust on the second connecting rod.

[0024] Specifically, when the angle between the door and the housing is less than or equal to a second critical angle, the contact member contacts the second connecting rod, compressing the compression spring. The compression spring generates a thrust on the movable seat, which in turn applies the thrust to the second connecting rod via the contact member, thereby achieving the door's small-angle automatic locking function. When the angle between the door and the housing is greater than the second critical angle, the contact member separates from the second connecting rod, and the compression spring returns to its uncompressed state. The compression spring is no longer compressed, and the compression spring assembly no longer generates a thrust on the second connecting rod.

[0025] In some technical solutions, optionally, the shell has a slide, and a portion of the compression spring is located in the slide and can be extended and retracted along the slide.

[0026] In this technical solution, the mounting structure of the compression spring assembly is defined. To limit the position of the compression spring, a structure for limiting the position of the compression spring is provided on the housing. Specifically, the housing has a slideway, within which a portion of the compression spring is located. When the compression spring is compressed or reset, the compression spring expands and contracts along the slideway. This defines the direction of expansion and contraction of the compression spring, and thereby the direction of the thrust exerted by the compression spring on the second connecting rod via the movable seat and the contact member.

[0027] In some technical solutions, optionally, the contact member can be rollably mounted on the movable seat.

[0028] In this technical solution, the structure of the contact member is defined. The contact member is rotatably mounted on the movable seat, and when the contact member contacts the second connecting rod, the contact member can roll relative to the movable seat under the action of the friction between the second connecting rod and the contact member.

[0029] It is understandable that when the door is opened or closed, the second connecting rod rotates relative to the housing. When the second connecting rod rotates relative to the housing and contacts the contact member, friction exists between the second connecting rod and the contact member. If the contact member is fixedly connected to the movable seat, the friction between the contact member and the second connecting rod is in the form of sliding friction, which results in a large friction between the contact member and the second connecting rod and causes relatively severe wear on the contact member. The present application provides a method in which the contact member is configured to be rollably mounted on the movable seat, thereby making the friction between the contact member and the second connecting rod a rolling friction, thereby reducing the friction between the contact member and the second connecting rod, reducing the degree of wear on the contact member, and improving the service life of the contact member, thereby improving the reliability of the cooking appliance.

[0030] The contact member may be a roller.

[0031] In some technical solutions, optionally, the tension spring assembly includes: a fixed seat assembly, installed on the shell; a tension spring, the two ends of the tension spring are respectively connected to the fixed seat assembly and the second pull rod, and in the process of the door body opening the box body, the second pull rod pulls the tension spring to extend, and the tension spring applies tension to the second pull rod.

[0032] In this technical solution, the structure of the tension spring assembly is defined. The tension spring assembly includes a fixing seat assembly and a tension spring, wherein the fixing seat assembly is used to install the tension spring, and the tension spring is used to apply tension to the pull rod assembly.

[0033] Specifically, a fixed seat assembly is mounted on the housing, and the fixed seat assembly is mounted on an end of the housing away from the second connecting rod. The two ends of the tension spring are respectively connected to the fixed seat assembly and the second connecting rod. Both ends of the tension spring have hooks, and the two hooks of the tension spring are respectively rotatably connected to the fixed seat assembly and the second connecting rod. During the process of the door body opening the box body, the housing rotates around the second connecting rod. The hinge point of the first connecting rod and the second connecting rod serves as the first point, and the connection point of the fixed seat assembly and the housing serves as the second point. As the housing and the second connecting rod rotate relative to each other, the distance between the first point and the second point increases, thereby increasing the stretching length of the tension spring, and the tension spring generates a pulling force on the second connecting rod. The second connecting rod transmits the pulling force to the second connecting rod through the first connecting rod. The second connecting rod is connected to the housing, and the housing is connected to the door body, thereby transmitting the pulling force to the door body so that the torque of the pulling force can overcome the gravity torque of the door body, thereby achieving the technical effect that the door body can hover during the door opening process or the door body can automatically close at a small angle when closing.

[0034] In some technical solutions, optionally, the fixing seat assembly includes: a fixing seat fixedly connected to the shell; an adjusting rod connected to the fixing seat, and a tension spring installed on the adjusting rod.

[0035] This technical solution defines the structure of a fixed seat assembly. The fixed seat assembly includes a fixed seat and an adjustment rod. The fixed seat is used to mount the adjustment rod, which in turn is used to mount a tension spring. Specifically, the fixed seat is fixedly connected to the housing, connected to the end of the housing away from the second connecting rod. The adjustment rod is connected to the fixed seat. The tension spring is mounted on the adjustment rod. The end of the adjustment rod facing the tension spring has a hook or a structure capable of mounting a hook. The hook at the end of the tension spring is rotatably connected to the adjustment rod.

[0036] Furthermore, the adjustment rod is removable from the mounting base, and the length of the adjustment rod extending from the mounting base toward the interior of the housing is adjustable. Understandably, as the tension spring is repeatedly stretched, it ages, resulting in a decrease in tension when stretched to the same length. When the tension of the tension spring decreases, the user can reduce the length of the adjustment rod extending from the mounting base toward the interior of the housing to increase the stretched length of the tension spring, thereby increasing the tension of the tension spring.

[0037] In some technical solutions, optionally, the cooking appliance further includes: a damper limiter installed on the shell, and the damper limiter is used to limit both ends of the damper.

[0038] This technical solution further defines the structure of the cooking appliance. The cooking appliance also includes a damping stopper, which is used to limit the position of the damper. Specifically, the damping stopper is mounted on the housing, with at least a portion of the damping stopper located at either end of the damper along the direction of extension and contraction of the damper. This allows the damper to be stably mounted on the second pull rod while also limiting the travel of the damper.

[0039] In some technical solutions, optionally, the second connecting rod has multiple fork arms, and the multiple fork arms are rotatably connected to both sides of the hinge arm; the number of first connecting rods is multiple, and the multiple first connecting rods are rotatably connected to both sides of the hinge arm.

[0040] This technical solution defines the structures of the first and second connecting rods. The second connecting rod has multiple fork arms that extend toward the hinge arm and are rotatably connected to either side of the hinge arm. There are multiple first connecting rods, each rotatably connected to either side of the hinge arm. The multiple first connecting rods are also rotatably connected to two opposing wall surfaces. This improves the stability of the hinge assembly.

[0041] In a possible technical solution, the number of fork arms on the second connecting rod is two, and the two fork arms are respectively rotatably connected to the two sides of the hinge arm. The number of first connecting rods is two, and the two first connecting rods are respectively rotatably connected to the two sides of the hinge arm and the two oppositely arranged walls of the shell.

[0042] In some technical solutions, optionally, the hinge arm is connected to the bottom of the box, and the first connecting rod is connected to one end of the shell facing the bottom of the box.

[0043] In this technical solution, the connection position between the hinge device and the box body is defined. Specifically, the hinge arm is connected to the bottom of the box body, and the first connecting rod is connected to the end of the shell facing the bottom of the box body. In this way, the door body can rotate around the bottom of the box body, and the user can open and close the door by pulling down.

[0044] In some technical solutions, optionally, the cooking appliance further includes: a plurality of pins for rotatably connecting the two ends of the first connecting rod to the shell and the hinge arm respectively; and a plurality of bushings respectively sleeved on the corresponding pins to axially limit the pins.

[0045] This technical solution defines the connection structure between the first connecting rod, the hinge arm, and the housing. Specifically, the cooking appliance further includes multiple pins and multiple bushings. The pins pass through one end of the first connecting rod and the hinge arm to rotationally connect the first connecting rod to the hinge arm, while the pins pass through the other end of the first connecting rod and the housing to rotationally connect the first connecting rod to the housing. The bushings are positioned corresponding to the pins, with multiple bushings being fitted over corresponding pins to axially limit the pins and enhance the stability of the connection between the first connecting rod, the hinge arm, and the housing.

[0046] Furthermore, the second connecting rod and the hinge arm, the second connecting rod and the housing, the first pull rod and the second connecting rod, and the first pull rod and the second pull rod in the hinge device can also be connected through a pin shaft.

[0047] In some technical solutions, optionally, the cooking appliance includes an oven, a microwave oven, or a steam oven.

[0048] 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

[0049] 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:

[0050] Figure 1 A schematic structural diagram of a hinge device according to an embodiment of the present invention is shown;

[0051] Figure 2 One of the exploded views of a hinge device according to an embodiment of the present invention is shown;

[0052] Figure 3 A schematic diagram showing the structure of the hinge device of the door body when the box body is closed according to an embodiment of the present invention is shown;

[0053] Figure 4 A schematic diagram showing the structure of the hinge device when the door body of one embodiment of the present invention is opened to a certain angle of the box body;

[0054] Figure 5 A schematic structural diagram of the hinge device when the door body of an embodiment of the present invention is fully opened is shown;

[0055] Figure 6 A schematic diagram showing the structure of a cooking appliance when the door of one embodiment of the present invention is closed;

[0056] Figure 7 It shows a schematic structural diagram of a cooking appliance when the door of an embodiment of the present invention is fully opened;

[0057] Figure 8 The second exploded view shows a hinge device according to an embodiment of the present invention.

[0058] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names is as follows:

[0059] 100 cooking utensil, 110 cabinet, 120 door, 130 hinge device, 131 housing, 132 hinge arm, 133 first connecting rod, 134 second connecting rod, 135 first hinge point, 136 second hinge point, 137 fork arm, 140 pull rod assembly, 141 damper, 142 first pull rod, 143 second pull rod, 144 mounting groove, 145 damper limiter, 150 tension spring assembly, 151 fixed seat assembly, 152 tension spring, 153 fixed seat, 154 adjusting rod, 160 compression spring assembly, 161 mounting seat, 162 compression spring, 163 movable seat, 164 contact member, 165 mounting rod, 170 pin shaft, 171 bushing. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] Refer to the following Figures 1 to 8 A cooking appliance 100 according to some embodiments of the present invention is described.

[0063] In one embodiment according to the present application, Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Figure 8As shown, the application provides a cooking appliance 100, comprising: a cabinet 110; a door body 120, the door body 120 being used to open or close the cabinet 110; a hinge device 130, the door body 120 being connected with the cabinet 110 through the hinge device 130, the hinge device 130 comprising: a housing 131, the housing 131 being fixedly connected with the door body 120; a hinge arm 132, the hinge arm 132 being fixedly connected with the cabinet 110; a first connecting rod 133, two ends of the first connecting rod 133 being rotatably connected with the housing 131 and the hinge arm 132 respectively, the first connecting rod 133 being rotatably connected with the housing 131 at a first hinge point 135; a second connecting rod 134, two ends of the second connecting rod 134 being rotatably connected with the housing 131 and the hinge arm 132 respectively, the second connecting rod 134 being rotatably connected with the housing 131 at a second hinge point 136, the first hinge point 135 and the second hinge point 136 having a distance therebetween; a pull rod assembly 140, the pull rod assembly 140 being installed in the housing 131; a pull spring assembly 150, the pull spring assembly 150 being installed in the housing 131, two ends of the pull rod assembly 140 being connected with the second connecting rod 134 and the pull spring assembly 150 respectively, the pull spring assembly 150 being connected with an end of the housing 131 away from the second connecting rod 134, in the process of the door body 120 opening the cabinet 110, the pull spring assembly 150 applies a pulling force to the pull rod assembly 140 in a direction away from the second connecting rod 134; a damper 141, the damper 141 being installed in the pull rod assembly 140, in the process of the door body 120 closing the cabinet 110, the damper 141 is used to reduce the rotating speed of the door body 120.

[0064] The cooking appliance 100 provided by the application can be embedded in a cabinet, the cooking appliance 100 comprising the cabinet 110, the door body 120 and the hinge device 130, the door body 120 being connected with the cabinet 110 through the hinge device 130, the door body 120 being rotatable relative to the cabinet 110 to open or close the cabinet 110. The bottom of the door body 120 is connected with the cabinet 110, and it is understandable that, in the process of the door body 120 opening the cabinet 110, a certain distance needs to be left between the door body 120 and the bottom wall of the cabinet in which the cooking appliance 100 is located, so as to avoid interference between the bottom of the door body 120 and the cabinet during the rotation of the door body 120. In order to reduce the distance between the bottom of the door body 120 and the bottom of the cabinet, the application provides a hinge device 130 in the cooking appliance 100.

[0065] Further, the hinge device 130 comprises a housing 131, a hinge arm 132, a first connecting rod 133 and a second connecting rod 134. The housing 131 is a hollow structure, and the housing 131 is fixedly connected with the door body 120. The hinge arm 132 is fixedly connected with the cabinet 110. The first connecting rod 133 and the second connecting rod 134 are used to connect the housing 131 and the hinge arm 132, so as to realize the connection between the door body 120 and the cabinet 110. Specifically, the two ends of the first connecting rod 133 are rotatably connected with the housing 131 and the hinge arm 132 respectively. The two ends of the second connecting rod 134 are rotatably connected with the housing 131 and the hinge arm 132 respectively. In this way, the housing 131, the hinge arm 132, the first connecting rod 133 and the second connecting rod 134 form a quadrilateral structure. When the door body 120 rotates relative to the cabinet 110, the door body 120 drives the housing 131 to rotate relative to the first connecting rod 133 and the second connecting rod 134. The first connecting rod 133 and the second connecting rod 134 rotate relative to the hinge arm 132. The quadrilateral structure satisfies the double-axis rotation movement, so that the door body 120 moves in the direction away from the bottom of the cabinet and in the direction towards the cabinet 110 when the cabinet 110 is opened, instead of fixed rotation movement, thereby avoiding the interference between the door body 120 and the cabinet during the opening and closing of the cabinet 110. Further, the distance required to be reserved between the door body 120 and the cabinet is reduced, and the appearance of the product is improved.

[0066] Further, the position where the first connecting rod 133 is rotatably connected with the housing 131 is a first hinge joint 135. The position where the second connecting rod 134 is rotatably connected with the housing 131 is a second hinge joint 136. The first hinge joint 135 and the second hinge joint 136 have a spacing therebetween. In this way, the first hinge joint 135 and the second hinge joint 136 can be avoided from coinciding, so as to form a quadrilateral structure of the housing 131, the hinge arm 132, the first connecting rod 133 and the second connecting rod 134.

[0067] Furthermore, the hinge device 130 also includes a pull rod assembly 140 and a tension spring assembly 150. When the door body 120 opens the box body 110, the tension spring assembly 150 is stretched to apply a pulling force to the door body 120 to overcome the gravity of the door body 120, so that the door body 120 can hover or automatically close. Specifically, the pull rod assembly 140 is installed in the housing 131, one end of the pull rod assembly 140 is connected to the second connecting rod 134, and the pull rod assembly 140 is rotatably connected to the second connecting rod 134. The tension spring assembly 150 is installed in the housing 131, the end of the pull rod assembly 140 away from the second connecting rod 134 is connected to the tension spring assembly 150, and the pull rod assembly 140 is rotatably connected to the tension spring assembly 150. The end of the tension spring assembly 150 away from the pull rod assembly 140 is connected to the end of the housing 131 away from the second connecting rod 134. During the process of the door body 120 opening the box body 110, at least a portion of the tension spring assembly 150 is stretched to generate a pulling force on the pull rod assembly 140, which in turn applies the pulling force to the door body 120 through the pull rod assembly 140 and the second connecting rod 134. The pulling force is in the direction away from the second connecting rod 134, that is, the pulling force has an upward component. The torque generated by the tension of the tension spring assembly 150 can overcome the gravitational torque of the door body 120. In this way, the door body 120 can remain suspended when the door body 120 opens the box body 110. Furthermore, when the angle between the door body 120 and the box body 110 is small, the gravitational torque of the door body 120 is small, and the torque generated by the tension of the tension spring assembly 150 is greater than the gravitational torque of the door body 120. At this time, automatic door closing at a small angle can be achieved.

[0068] Furthermore, the hinge device 130 also includes a damper 141, which is installed on the pull rod assembly 140. When the door body 120 closes the box body 110, the damper 141 is compressed to slow down the closing speed, thereby achieving the technical effect of closing the door quietly and slowly.

[0069] In some embodiments, optionally, when the angle between the door body 120 and the box body 110 is greater than the first critical angle and less than 90°, the torque of the tension spring assembly 150 on the pull rod assembly 140 is equal to the torque of the gravity of the door body 120, so that the door body 120 is suspended.

[0070] In this embodiment, the effect of the tension spring assembly 150 on the door body 120 is further limited. The tension spring assembly 150 can achieve the technical effect of the door body 120 hovering when the door is opened. In the process of the door body 120 opening the box body 110, the tension spring assembly 150 generates a pulling force on the pull rod assembly 140, and then the pulling force is applied to the door body 120 through the pull rod assembly 140 and the second connecting rod 134. The direction of the pulling force is in the direction away from the second connecting rod 134, that is, the pulling force has an upward component. When the angle between the door body 120 and the box body 110 is greater than the first critical angle and less than 90°, the torque formed by the tension of the tension spring assembly 150 is equal to the gravity torque of the door body 120, so that the torque formed by the tension of the tension spring assembly 150 can overcome the gravity torque of the door body 120, thereby enabling the door body 120 to hover, thereby improving the user's convenience.

[0071] In some embodiments, optionally, when the angle between the door body 120 and the box body 110 is less than or equal to a first critical angle, the torque of the tension spring assembly 150 on the pull rod assembly 140 is greater than the torque of the gravity of the door body 120, so that the door body 120 automatically closes the box body 110.

[0072] In this embodiment, the effect of the tension spring assembly 150 on the door body 120 is further limited. The tension spring assembly 150 can also achieve the technical effect that the door body 120 can automatically close the door at a small angle. In the process of the door body 120 opening the box body 110, the tension spring assembly 150 generates a pulling force on the pull rod assembly 140, and then the pulling force is applied to the door body 120 through the pull rod assembly 140 and the second connecting rod 134. The direction of the pulling force is in the direction away from the second connecting rod 134, that is, the pulling force has an upward component. It can be understood that the smaller the angle between the door body 120 and the box body 110, the smaller the gravity torque of the door body 120. When the angle between the door body 120 and the box body 110 is less than or equal to the first critical angle, the torque of the tension spring assembly 150 on the pull rod assembly 140 is greater than the gravity torque of the door body 120, so that the door body 120 automatically closes the box body 110. When the user mistakenly opens the door body 120 or the door body 120 rotates to a position with a smaller angle with respect to the door body 120, the door can be automatically closed without the user continuing to operate, thereby improving the reliability and ease of use of the cooking appliance 100.

[0073] In some embodiments, optionally, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the pull rod assembly 140 includes: a first pull rod 142, one end of which is connected to the second connecting rod 134; a second pull rod 143, both ends of which are respectively connected to the first pull rod 142 and the tension spring assembly 150, and the second pull rod 143 has a mounting groove 144, which is used to install the damper 141.

[0074] In this embodiment, the structure of the pull rod assembly 140 is defined. The pull rod assembly 140 is a multi-section structure, and the pull rod assembly 140 includes a first pull rod 142 and a second pull rod 143. One end of the first pull rod 142 is rotatably connected to the second connecting rod 134, and two ends of the second pull rod 143 are respectively connected to the first pull rod 142 and the tension spring assembly 150. One end of the second pull rod 143 is rotatably connected to the first pull rod 142, and the other end is rotatably connected to the tension spring assembly 150. During the process of opening the box body 110 by the door body 120, the tension spring assembly 150 is stretched, the tension spring assembly 150 exerts a pulling force on the second pull rod 143, the second pull rod 143 exerts a pulling force on the first pull rod 142, the first pull rod 142 transmits the pulling force to the shell 131 through the second connecting rod 134, and the pulling force is further transmitted to the door body 120 because the shell 131 is fixedly installed on the door body 120, so that the torque formed by the tension spring assembly 150 can overcome the torque of the gravity of the door body 120, so that the door body 120 can hover when opening the box body 110, and the door body 120 can automatically close when closing the box body 110 at a small angle.

[0075] Further, the second pull rod 143 has a mounting groove 144 for mounting the damper 141, and at least a part of the damper 141 is located in the mounting groove 144. When the door body 120 closes the box body 110, the damper 141 is compressed to slow down the closing speed, so as to achieve the technical effect of soft closing.

[0076] In some embodiments, as shown in Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the cooking appliance 100 further includes a compression spring assembly 160 installed on the shell 131, and a part of the compression spring assembly 160 can be extended and retracted. When the included angle between the door body 120 and the box body 110 is less than or equal to a second critical angle, the compression spring assembly 160 contacts and exerts a pushing force on the second connecting rod 134. When the included angle between the door body 120 and the box body 110 is greater than the second critical angle, the compression spring assembly 160 is separated from the second connecting rod 134.

[0077] In this embodiment, the structure of the cooking appliance 100 is further defined. The cooking appliance 100 also includes a compression spring assembly 160, which is mounted on the housing 131. When the angle between the door 120 and the housing 110 is small, the compression spring assembly 160 can contact and apply a thrust to the second connecting rod 134, thereby realizing the small-angle automatic locking function of the door 120. Specifically, when the angle between the door 120 and the housing 110 is less than or equal to the second critical angle, the opening angle between the door 120 and the housing 110 is small. At this time, the compression spring assembly 160 contacts the second connecting rod 134, the compression spring assembly 160 is compressed, and the compression spring assembly 160 applies a thrust to the second connecting rod 134, thereby realizing the small-angle automatic locking function of the door 120.

[0078] Furthermore, when the angle between the door body 120 and the box body 110 is greater than a second critical angle, the compression spring assembly 160 is separated from the second connecting rod 134, and the compression spring assembly 160 no longer applies thrust to the second connecting rod 134. The second critical angle is 10°.

[0079] In some embodiments, optionally, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the compression spring assembly 160 includes: a mounting seat 161, which is located inside the shell 131 and is fixedly connected to the shell 131; a movable seat 163, which has a mounting rod 165, which is movably connected to the mounting seat 161, and the movable seat 163 can move back and forth in a direction toward or away from the mounting seat 161; a compression spring 162, which is mounted on the mounting rod 165 and abuts against the mounting seat 161; a contact member 164, which is mounted on the movable seat 163. When the angle between the door body 120 and the box body 110 is less than or equal to the second critical angle, the contact member 164 contacts the second connecting rod 134, and the compression spring 162 is compressed. When the angle between the door body 120 and the box body 110 is greater than the second critical angle, the contact member 164 separates from the second connecting rod 134, and the compression spring 162 returns to an uncompressed state.

[0080] In this embodiment, the structure of the compression spring assembly 160 is defined. The compression spring assembly 160 includes a mounting seat 161, a compression spring 162, a moving seat 163, and a contact piece 164, wherein the mounting seat 161 is used to mount the moving seat 163, the moving seat 163 is used to mount the compression spring 162 and the contact piece 164, the compression spring 162 is used to apply a pushing force to the moving seat 163, and in turn, apply the pushing force to the second connecting rod 134 through the contact piece 164. Specifically, the mounting seat 161 is located inside the housing 131, and the mounting seat 161 is fixedly connected with the housing 131. The moving seat 163 is movably mounted on the mounting seat 161 and can move relative to the mounting seat 161, and the moving seat 163 has a mounting rod 165 extending in a direction towards the mounting seat 161 and movably connected with the mounting seat 161, and the moving seat 163 can reciprocate in a direction towards or away from the mounting seat 161. The compression spring 162 is mounted on the mounting rod 165, one end of the compression spring 162 abuts against the mounting seat 161, and when the moving seat 163 moves in a direction towards the mounting seat 161, the compression spring 162 is compressed, and when the moving seat 163 moves in a direction away from the mounting seat 161, the compression spring 162 returns to an original state. When the compression spring 162 is compressed, the compression spring 162 generates a pushing force on the moving seat 163, and the moving seat 163 applies the pushing force to the second connecting rod 134 through the contact piece 164. When the contact piece 164 is separated from the second connecting rod 134, the compression spring 162 returns to an uncompressed state, and the compression spring 162 is no longer compressed, and the compression spring assembly 160 no longer generates a pushing force on the second connecting rod 134.

[0081] Specifically, when the included angle between the door body 120 and the cabinet 110 is less than or equal to the second critical angle, the contact piece 164 contacts the second connecting rod 134, the compression spring 162 is compressed, the compression spring 162 generates a pushing force on the moving seat 163, and the moving seat 163 applies the pushing force to the second connecting rod 134 through the contact piece 164, so as to realize the small-angle automatic locking function of the door body 120. When the included angle between the door body 120 and the cabinet 110 is greater than the second critical angle, the contact piece 164 is separated from the second connecting rod 134, the compression spring 162 returns to an uncompressed state, the compression spring 162 is no longer compressed, and the compression spring assembly 160 no longer generates a pushing force on the second connecting rod 134.

[0082] In some embodiments, optionally, the housing 131 has a sliding channel, and a portion of the compression spring 162 is located in the sliding channel and can extend and retract along the sliding channel.

[0083] In this embodiment, the mounting structure of the compression spring assembly 160 is defined. To limit the position of the compression spring 162, the present application provides a structure on the housing 131 for limiting the position of the compression spring 162. Specifically, the housing 131 has a slideway, within which a portion of the compression spring 162 is located. When the compression spring 162 is compressed or reset, the compression spring 162 expands and contracts along the slideway. This defines the expansion and contraction direction of the compression spring 162, and thus the direction of the thrust exerted by the compression spring 162 on the second connecting rod 134 via the movable seat 163 and the contact member 164.

[0084] In some embodiments, the contact member 164 can be optionally mounted on the movable seat 163 in a rollable manner.

[0085] In this embodiment, the structure of the contact member 164 is defined. The contact member 164 is rotatably mounted on the movable base 163. When the contact member 164 contacts the second connecting rod 134, the contact member 164 can roll relative to the movable base 163 due to the friction between the second connecting rod 134 and the contact member 164.

[0086] It is understandable that when the door 120 opens or closes the box body 110, the second connecting rod 134 rotates relative to the housing 131. When the second connecting rod 134 rotates relative to the housing 131 and contacts the contact member 164, friction exists between the second connecting rod 134 and the contact member 164. If the contact member 164 is fixedly connected to the movable seat 163, the friction between the contact member 164 and the second connecting rod 134 is in the form of sliding friction, which results in a large friction between the contact member 164 and the second connecting rod 134 and causes relatively severe wear on the contact member 164. The present application configures the contact member 164 to be rollably mounted on the movable seat 163, thereby making the friction between the contact member 164 and the second connecting rod 134 a rolling friction, thereby reducing the friction between the contact member 164 and the second connecting rod 134, reducing the degree of wear on the contact member 164, and improving the service life of the contact member 164, thereby improving the reliability of the cooking appliance 100.

[0087] The contact member 164 may be a roller.

[0088] In some embodiments, optionally, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the tension spring assembly 150 includes: a fixed seat assembly 151, which is installed on the shell 131; a tension spring 152, and the two ends of the tension spring 152 are respectively connected to the fixed seat assembly 151 and the second pull rod 143. In the process of the door body 120 opening the box body 110, the second pull rod 143 pulls the tension spring 152 to extend, and the tension spring 152 applies tension to the second pull rod 143.

[0089] In this embodiment, the structure of the tension spring assembly 150 is defined. The tension spring assembly 150 includes a fixing seat assembly 151 and a tension spring 152 , wherein the fixing seat assembly 151 is used to install the tension spring 152 , and the tension spring 152 is used to apply tension to the pull rod assembly 140 .

[0090] Specifically, the fixing seat assembly 151 is mounted on the housing 131 at one end of the housing 131 away from the second connecting rod 134. The two ends of the tension spring 152 are respectively connected to the fixing seat assembly 151 and the second pull rod 143. Both ends of the tension spring 152 have hooks, and the two hooks of the tension spring 152 are respectively rotatably connected to the fixing seat assembly 151 and the second connecting rod 134. When the door 120 opens the box body 110, the housing 131 rotates around the second connecting rod 134. The hinge point between the first connecting rod 133 and the second connecting rod 134 serves as the first point, and the connection point between the fixing seat assembly 151 and the housing 131 serves as the second point. As the housing 131 and the second connecting rod 134 rotate relative to each other, the distance between the first point and the second point increases, thereby increasing the stretched length of the tension spring 152, and the tension spring 152 generates a pulling force on the second pull rod 143. The second connecting rod 134 transmits the pulling force to the second connecting rod 134 through the first connecting rod 133. The second connecting rod 134 is connected to the shell 131, and the shell 131 is connected to the door body 120, thereby transmitting the pulling force to the door body 120 so that the torque of the pulling force can overcome the gravity torque of the door body 120, thereby achieving the technical effect that the door body 120 can hover during the door opening process or the door body 120 can automatically close at a small angle when closing the door.

[0091] In some embodiments, optionally, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the fixing seat assembly 151 includes: a fixing seat 153 fixedly connected to the housing 131 ; an adjusting rod 154 connected to the fixing seat 153 ; and a tension spring 152 installed on the adjusting rod 154 .

[0092] In this embodiment, the structure of the fixed seat assembly 151 is defined. The fixed seat assembly 151 includes a fixed seat 153 and an adjustment rod 154, wherein the fixed seat 153 is used to mount the adjustment rod 154, and the adjustment rod 154 is used to mount the tension spring 152. Specifically, the fixed seat 153 is fixedly connected to the housing 131, the fixed seat 153 is connected to the end of the housing 131 away from the second connecting rod 134, the adjustment rod 154 is connected to the fixed seat 153, and the tension spring 152 is mounted on the adjustment rod 154. The end of the adjustment rod 154 facing the tension spring 152 has a hook or a structure capable of mounting a hook, and the hook at the end of the tension spring 152 is rotatably connected to the adjustment rod 154.

[0093] Furthermore, the adjustment rod 154 is removable from the fixing base 153, and the length of the adjustment rod 154 extending from the fixing base 153 toward the interior of the housing 131 is adjustable. Understandably, as the tension spring 152 is repeatedly stretched, it ages, resulting in a decrease in the tension of the tension spring 152 when stretched to the same length. When the tension of the tension spring 152 decreases, the user can reduce the length of the adjustment rod 154 extending from the fixing base 153 toward the interior of the housing 131 to increase the stretched length of the tension spring 152, thereby increasing the tension of the tension spring 152.

[0094] In some embodiments, optionally, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the cooking appliance 100 further includes a damper limiting member 145 installed on the housing 131 . The damper limiting member 145 is used to limit both ends of the damper 141 .

[0095] In this embodiment, the structure of the cooking appliance 100 is further defined. The cooking appliance 100 also includes a damping stopper, which is used to limit the position of the damper 141. Specifically, the damping stopper is mounted on the housing 131. Along the extension and retraction direction of the damper 141, at least a portion of the damping stopper is located at each end of the damper 141, thereby limiting the position of the damper 141. This ensures that the damper 141 is stably mounted on the second pull rod 143 of the seat 161 and limits the travel of the damper 141.

[0096] In some embodiments, optionally, as Figure 2 As shown, the second connecting rod 134 has multiple fork arms 137, and the multiple fork arms 137 are rotatably connected to both sides of the hinge arm 132; the number of first connecting rods 133 is multiple, and the multiple first connecting rods 133 are rotatably connected to both sides of the hinge arm 132.

[0097] In this embodiment, the structures of the first link 133 and the second link 134 are defined. The second link 134 has multiple fork arms 137 that extend toward the hinge arm 132 and are rotatably connected to either side of the hinge arm 132. There are multiple first links 133, each rotatably connected to either side of the hinge arm 132. The multiple first links 133 are also rotatably connected to two opposing walls. This improves the stability of the hinge assembly 130.

[0098] In a possible embodiment, there are two fork arms 137 on the second connecting rod 134, and the two fork arms 137 are respectively rotatably connected to the two sides of the hinge arm 132. There are two first connecting rods 133, and the two first connecting rods 133 are respectively rotatably connected to the two sides of the hinge arm 132 and the two oppositely arranged wall surfaces of the shell 131.

[0099] In some embodiments, optionally, as Figure 6 and Figure 7 As shown, the hinge arm 132 is connected to the bottom of the box body 110 , and the first connecting rod 133 is connected to one end of the shell 131 facing the bottom of the box body 110 .

[0100] In this embodiment, the connection position between the hinge device 130 and the box body 110 is defined. Specifically, the hinge arm 132 is connected to the bottom of the box body 110, and the first connecting rod 133 is connected to the end of the housing 131 facing the bottom of the box body 110. In this way, the door body 120 can rotate around the bottom of the box body 110, and the user can open and close the door by pulling it down.

[0101] In some embodiments, optionally, as Figure 2 As shown, the cooking utensil 100 further includes: a plurality of pins 170 for rotatably connecting the two ends of the first connecting rod 133 to the shell 131 and the hinge arm 132 respectively; and a plurality of shaft sleeves 171 respectively sleeved on the corresponding pins 170 to axially limit the pins 170.

[0102] In this embodiment, the connection structure between the first connecting rod 133, the hinge arm 132, and the housing 131 is defined. Specifically, the cooking appliance 100 further includes a plurality of pins 170 and a plurality of bushings 171. The pins 170 pass through one end of the first connecting rod 133 and the hinge arm 132 to rotationally connect the first connecting rod 133 to the hinge arm 132. The pins 170 pass through the other end of the first connecting rod 133 and the housing 131 to rotationally connect the first connecting rod 133 to the housing 131. Bushings 171 are provided corresponding to the pins 170, with multiple bushings respectively sleeved on corresponding pins 170 to axially limit the pins 170 and enhance the stability of the connection between the first connecting rod 133, the hinge arm 132, and the housing 131.

[0103] Furthermore, the second connecting rod 134 and the hinge arm 132 , the second connecting rod 134 and the housing 131 , the first pull rod 142 and the second connecting rod 134 , and the first pull rod 142 and the second pull rod 143 in the hinge device 130 may also be connected via a pin 170 .

[0104] In some embodiments, the cooking appliance 100 optionally includes an oven, a microwave oven, or a steam oven.

[0105] In one possible embodiment, in order to improve the movement convenience of the door opening and closing process of the embedded pull-down door oven, the present application proposes an oven (i.e., a cooking appliance 100), including a hinge device 130 for connecting the door body 120 and the box body 110. The hinge device 130 allows the door body 120 to not interfere with the cabinet during the door opening and closing process and can hover. The hinge device 130 includes a hinge shell (i.e., a shell 131), a hinge arm 132, a first connecting rod 133, a second connecting rod 134, a first pull rod 142, a second pull rod 143, a tension spring 152, a roller (i.e., a contact member 164), a compression spring 162, a power rod (i.e., a mounting rod 165), a compression spring fixing seat (i.e., a mounting seat 161), a damper 141, a damping limit block (i.e., a damper limit member 145), a shaft sleeve 171, a connecting pin (i.e., a pin shaft 170), a tension spring adjustment rod (i.e., an adjustment rod 154), and a tension spring fixing seat (i.e., a fixing seat 153).

[0106] The hinge housing is connected to the door body of the built-in oven (i.e., the door body 120), and the hinge housing is nested on the door body 120 and fixed by screws. The hinge arm 132 is nested on the box body 110 and its movement is restricted by a limit block. The first connecting rod 133 connects the hinge housing and the hinge arm 132 through a connecting pin for rotational movement. The second connecting rod 134 connects the hinge housing and the hinge arm 132 through a connecting pin for rotational movement. The first pull rod 142 connects the second connecting rod 134 and the second pull rod 143 through a connecting pin. When the door is opened, the first pull rod 142 moves with the hinge housing. The second pull rod 143 connects the first pull rod 142 and the tension spring 152 through a connecting pin. When the door is opened, the second pull rod 143 moves with the hinge housing. The tension spring 152 connects the second pull rod 143 and the tension spring adjustment rod through a connecting pin. The tension spring 152 extends or retracts as the pull rod moves. The roller is connected to the power-assisting rod and contacts the second connecting rod 134, and the roller compresses and rebounds the compression spring 162. The compression spring 162 compresses and rebounds in the slide groove on the hinge housing following the roller. The compression spring fixing seat is connected to the power-assisting rod and the hinge housing, providing limited compression movement of one end of the compression spring 162. The damper 141 is nested in the second pull rod 143, and is compressed and extended when the second pull rod 143 moves, playing a role in buffering the door closing. The damping limit block is nested in the hinge housing, and plays a role in limiting the displacement of both ends of the damper 141. The shaft sleeve 171 connects the first connecting rod 133 and the hinge arm 132, and the second connecting rod 134 and the hinge housing, and plays a role in left and right limiting. The connecting pin connects the first connecting rod 133 to the hinge arm 132, the second connecting rod 134 to the hinge arm 132, the hinge housing to the first connecting rod 133, the hinge housing to the second connecting rod 134, the tension rod to the tension spring 152, and the tension spring 152 to the hinge housing. The tension spring adjustment rod connects the tension spring 152 to the tension spring retainer. The tension spring retainer connects the tension spring adjustment rod and is fixed to the hinge housing.

[0107] The hinge housing is fixed to the door body 120 by screws, and the hinge arm 132 is nested and fixed to the box body 110. The hinge arm 132 and the hinge housing are connected to the first connecting rod 133 and the second connecting rod 134 by connecting pins. In this way, the box body 110 and the door body 120 are connected by the entire hinge assembly (i.e., the hinge device 130). The hinge assembly can meet the requirements of the door body 120 to perform track-changing rotational movement in the range of 0° to 90° relative to the box body 110. When the angle of opening and closing the door is less than 10°, the compression spring assembly 160 contacts the second connecting rod 134 and compresses to provide reverse thrust to achieve the door opening load size and small angle automatic locking function.

[0108] When the door body 120 is open (i.e., the door body 120 rotates within the range from the first critical angle to 90°), the tension spring 152 on the hinge assembly provides a spring tension equal to the torque generated by the weight of the door body 120 when it is extended, allowing the door body 120 to hover at any angle when it is open. When the door body 120 is closed (i.e., the door body 120 rotates within the range from 0° to the first critical angle), the tension spring 152 provides a spring tension greater than the torque generated by the weight of the door body 120 when it is retracted, allowing the door body 120 to automatically close.

[0109] The first connecting rod 133, the second connecting rod 134, the hinge arm 132, and the hinge housing ultimately form a quadrilateral structure. The quadrilateral deformation principle allows the connecting rod to rotate on two axes, allowing the bottom of the door body 120 to move upward and inward, rather than moving on a fixed axis. This ensures that the door body 120 does not interfere with the cabinet during opening and closing. The damper 141 is nested in the second pull rod 143. When closing the door at a small angle, the damper 141 compresses and slows the closing speed, achieving a gentle and soft closing effect. The entire hinge device 130 also ensures smooth movement of the door body 120 during opening and closing. This hinge device 130 is suitable for embedded drop-down ovens.

[0110] 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 mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0111] 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.

[0112] 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 cooking utensil, characterized in that: include: Box; A door body, the door body is used to open or close the box body; A hinge device, wherein the door body is connected to the box body through the hinge device, and the hinge device includes: a housing, fixedly connected to the door body; A hinge arm, fixedly connected to the box; a first connecting rod, wherein both ends of the first connecting rod are rotatably connected to the housing and the hinge arm, respectively, and a position where the first connecting rod is rotatably connected to the housing is a first hinge point; a second connecting rod, wherein two ends of the second connecting rod are rotatably connected to the housing and the hinge arm respectively, a position where the second connecting rod is rotatably connected to the housing is a second hinge point, and a distance is provided between the first hinge point and the second hinge point; a pull rod assembly, installed in the housing; a tension spring assembly installed in the housing, wherein both ends of the pull rod assembly are respectively connected to the second connecting rod and the tension spring assembly, and the tension spring assembly is connected to an end of the housing away from the second connecting rod. When the door body opens the box body, the tension spring assembly applies a pulling force to the pull rod assembly in a direction away from the second connecting rod; A damper is installed on the pull rod assembly. When the door body closes the box body, the damper is used to reduce the rotation speed of the door body.

2. The cooking appliance according to claim 1, wherein When the angle between the door body and the box body is greater than a first critical angle and less than 90°, the torque of the tension spring assembly on the pull rod assembly is equal to the torque of the gravity of the door body, so that the door body is suspended.

3. The cooking appliance according to claim 2, wherein: When the angle between the door and the box is less than or equal to the first critical angle, the torque of the tension spring assembly on the pull rod assembly is greater than the torque of the gravity of the door, so that the door automatically closes the box.

4. The cooking appliance according to claim 1, wherein The pull rod assembly comprises: a first pull rod, one end of which is connected to the second connecting rod; The second pull rod has two ends connected to the first pull rod and the tension spring assembly respectively, and the second pull rod has a mounting groove, and the mounting groove is used to mount the damper.

5. The cooking appliance according to any one of claims 1 to 4, characterized in that Also includes: A compression spring assembly is installed on the shell, and a part of the compression spring assembly can be extended and retracted. When the angle between the door body and the box body is less than or equal to the second critical angle, the compression spring assembly contacts the second connecting rod and applies a thrust to the second connecting rod. When the angle between the door body and the box body is greater than the second critical angle, the compression spring assembly separates from the second connecting rod.

6. The cooking appliance according to claim 5, characterized in that The compression spring assembly comprises: A mounting seat, located inside the shell, and fixedly connected to the shell; A movable seat having a mounting rod, wherein the mounting rod is movably connected to the mounting seat, and the movable seat can reciprocate in a direction toward or away from the mounting seat; a compression spring mounted on the mounting rod and abutting against the mounting seat; A contact piece is installed on the movable seat. When the angle between the door body and the box body is less than or equal to a second critical angle, the contact piece contacts the second connecting rod and the compression spring is compressed. When the angle between the door body and the box body is greater than the second critical angle, the contact piece is separated from the second connecting rod and the compression spring returns to an uncompressed state.

7. The cooking appliance according to claim 6, characterized in that The housing has a slideway, a portion of the compression spring is located in the slideway, and can be extended and retracted along the slideway.

8. The cooking appliance according to claim 6, wherein The contact piece is rollably mounted on the movable seat.

9. The cooking appliance according to claim 4, wherein: The tension spring assembly comprises: A fixing seat assembly is mounted on the housing; A tension spring, both ends of which are connected to the fixing seat assembly and the second pull rod respectively. When the door body opens the box body, the second pull rod pulls the tension spring to extend, and the tension spring applies tension to the second pull rod.

10. The cooking appliance according to claim 9, characterized in that The fixing seat assembly includes: A fixing seat, fixedly connected to the housing; The adjusting rod is connected to the fixing seat, and the tension spring is installed on the adjusting rod.

11. The cooking appliance according to any one of claims 1 to 4, characterized in that Also includes: The damper limiting member is installed on the housing, and the damper limiting member is used to limit the two ends of the damper.

12. The cooking appliance according to claim 4, wherein The second connecting rod has a plurality of fork arms, and the plurality of fork arms are rotatably connected to both sides of the hinge arm respectively; There are multiple first connecting rods, and the multiple first connecting rods are rotatably connected to both sides of the hinge arm respectively.

13. The cooking appliance according to any one of claims 1 to 4, characterized in that The hinge arm is connected to the bottom of the box body, and the first connecting rod is connected to one end of the shell body facing the bottom of the box body.

14. The cooking appliance according to any one of claims 1 to 4, characterized in that Also includes: a plurality of pins, used for rotatably connecting the two ends of the first connecting rod to the housing and the hinge arm respectively; A plurality of bushings are respectively sleeved on the corresponding pin shafts to limit the axial position of the pin shafts.

15. The cooking appliance according to any one of claims 1 to 4, characterized in that The cooking appliance includes an oven, a microwave oven or a steam oven.

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