Pull-down door hinge assembly and cooking equipment

Abstract

The utility model provides a pull-down door hinge assembly and cooking equipment, the cooking equipment comprises a box body and a door body, the door body is used for opening or closing the box body, the pull-down door hinge assembly comprises a hinge arm, a hinge shell and a transmission assembly, and the hinge arm is used for being connected with the box body; the hinge shell is used for being connected with a door body. The transmission assembly is connected with the hinge shell, a pin shaft is arranged on one of the hinge arm and the transmission assembly, a transmission groove is formed in the other one of the hinge arm and the transmission assembly, the pin shaft is used for sliding in the transmission groove so that the hinge shell can rotate between the folding position and the unfolding position relative to the hinge arm, and the first side of the hinge arm deviates from the hinge shell. In the folding position, the distance between the first side of the hinge arm and the hinge shell is L1, in the unfolding position, the distance between the first side of the hinge arm and the hinge shell is L2, L1 is larger than L2, and the height of the hinge shell in the folding position is smaller than the height of the hinge shell in the unfolding position. The lower sliding door hinge assembly can realize orbital transfer door opening of the door body, and interference between the bottom of the door body and the box body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a pull-down door hinge assembly and a cooking device. Background Art

[0002] In related technologies, such as Figure 1 and Figure 2 As shown, in the cooking device 100', the hinge is installed on the door body 102', and the door body 102' rotates around a fixed axis with a fixed rotation radius. A gap greater than 15.5 mm needs to be reserved between the bottom of the door body 102' and the box body 104' to avoid interference between the door body and the box body 104'. The existence of the bottom gap not only affects the appearance of the product, but also affects the user experience of the product. Utility Model Content

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

[0004] In view of this, in a first aspect, the utility model proposes a drop-down door hinge assembly.

[0005] In a second aspect, the utility model provides a cooking device.

[0006] According to the first aspect of the utility model, the pull-down door hinge assembly provided by the utility model is used for cooking equipment, the cooking equipment includes a box body and a door body, the door body is used to open or close the box body, the pull-down door hinge assembly includes a hinge arm, a hinge shell and a transmission assembly, the hinge arm is used to connect with the box body; the hinge shell is used to connect with the door body; the transmission assembly is connected with the hinge shell, a pin is provided on one of the hinge arm and the transmission assembly, and a transmission groove is provided on the other, the pin is used to slide in the transmission groove, so that the hinge shell can rotate relative to the hinge arm between a folded position and an unfolded position; wherein, a first side of the hinge arm faces away from the hinge shell, and in the folded position, the distance between the first side of the hinge arm and the hinge shell is L1, and in the unfolded position, the distance between the first side of the hinge arm and the hinge shell is L2, L1>L2, taking the top surface or the bottom surface of the hinge arm as the reference plane, the height of the hinge shell in the folded position is lower than the height in the unfolded position.

[0007] The utility model provides a pull-down door hinge assembly for a cooking device. The cooking device comprises a box body and a door body, and the door body is connected to the box body through the pull-down door hinge assembly to realize opening and closing of the door body. The pull-down door hinge assembly can realize the door body's track change and opening, avoid interference between the bottom of the door body and the box body, and no gap needs to be reserved between the bottom of the door body and the box body, thereby improving the aesthetics of the cooking device.

[0008] The pull-down door hinge assembly includes a hinge arm, a hinge housing, and a transmission assembly. The hinge arm is connected to the housing of the cooking device, so that the pull-down door hinge assembly is connected to the housing of the cooking device. The hinge arm provides a stable support point for the rotation of the door body, ensuring the stability of the door body during opening and closing.

[0009] The hinge shell is connected to the door body of the cooking device and is the direct connection part for the rotation of the door body. The hinge shell can generate relative movement with the hinge arm, thereby realizing the opening and closing of the door body.

[0010] The transmission assembly connects the hinge housing and the hinge arm. A pin is arranged on one of the hinge arm and the transmission assembly, and a transmission groove is arranged on the other, for example, the hinge arm is provided with a pin, the transmission assembly is provided with a transmission groove, or the transmission assembly is provided with a pin, and the hinge arm is provided with a transmission groove.

[0011] When a force is applied to the door body, the pin shaft slides in the transmission groove, and the transmission assembly drives the hinge housing to rotate relative to the hinge arm, so that the hinge housing rotates relative to the hinge arm between a folded position and an unfolded position.

[0012] When the door is closed, the hinge shell is in a folded position, and the distance between the first side of the hinge arm and the hinge shell is L1. In this position, the door can fit tightly on the box body to ensure the sealing of the cooking device.

[0013] When the door needs to be opened, the hinge housing rotates to the unfolded position relative to the hinge arm through the action of the transmission assembly. In the unfolded position, the distance between the first side of the hinge arm and the hinge housing is L2, where L1>L2, that is, when the door is opened, the movement trajectory of the door is to open obliquely outwards while the end at the bottom moves upward, and then the entire door moves upward around the rotation point, avoiding interference with the box or other equipment components.

[0014] In the folded position, the hinge housing is relatively low with the top or bottom surface of the hinge arm as the reference plane, thereby reducing the space occupied by the upper part of the box when the door is closed and improving space utilization. When the door is rotated to the unfolded position, the height of the hinge housing increases, so that the door can move downward smoothly when opened while maintaining a certain distance from the box, making it easier for users to take food or perform other operations.

[0015] In summary, the pull-down door hinge assembly proposed in the utility model realizes the change-track opening of the door body of the cooking equipment through the transmission assembly, improves the space utilization and convenience of the cooking equipment, brings a more comfortable and smooth use experience to the user, avoids the collision between the bottom of the door body and the box body, improves the aesthetics of the cooking equipment, and ensures the brand texture.

[0016] In addition, the pull-down door hinge assembly in the above technical solution provided by the utility model may also have the following additional technical features:

[0017] In some technical schemes of the present invention, optionally, the transmission assembly includes a first transmission member and a second transmission member, the first transmission member is connected to the hinge housing; the second transmission member is connected to the hinge housing, and the hinge arm is located between the first transmission member and the second transmission member; wherein, based on the case where the pin shaft is arranged on the hinge arm, the first transmission member and the second transmission member are provided with a transmission groove, and based on the case where the transmission groove is arranged on the hinge arm, the first transmission member and the second transmission member are provided with a pin shaft.

[0018] In this technical solution, for the specific structure of the transmission component, the utility model is configured such that the transmission component includes a first transmission member and a second transmission member, the first transmission member is connected to the hinge housing, the second transmission member is connected to the hinge housing, and the second transmission member cooperates with the first transmission member to realize transmission.

[0019] The hinge arm is located between the first transmission member and the second transmission member, and is rotatably connected to the first transmission member and the second transmission member. The hinge arm can rotate between the first transmission member and the second transmission member within a certain angle range.

[0020] On the one hand, in the case where the pin is arranged on the hinge arm, a transmission groove is arranged on the first transmission member and the second transmission member, and when the hinge arm is located between the first transmission member and the second transmission member, the pin is inserted into the transmission groove on the first transmission member and the second transmission member. When the hinge arm moves, the pin moves in the transmission groove, thereby driving the first transmission member and the second transmission member to move accordingly, and the pin is limited by the groove wall in the transmission groove, thereby realizing the track-changing movement of the door body.

[0021] By arranging the transmission assembly to include a first transmission member and a second transmission member, and positioning the hinge arm between the first transmission member and the second transmission member, the stability of the cooperation between the hinge arm and the transmission assembly can be improved, and the occurrence of jamming or rotational deviation caused by unilateral transmission can be avoided.

[0022] On the other hand, a transmission groove is arranged on the hinge arm, and a pin shaft is arranged on the first transmission member and the second transmission member. When the hinge arm moves, the transmission groove limits the pin shaft, and the pin shaft moves in the transmission groove, thereby driving the first transmission member and the second transmission member to move.

[0023] In summary, the utility model sets the structure of the transmission assembly, which includes a first transmission member and a second transmission member. The transmission assembly structure is flexible and changeable, and the layout of the pin and the transmission groove can be selected according to specific application scenarios and needs. Through reasonable structural design, accurate and reliable transmission control can be achieved to meet the needs of different equipment and systems.

[0024] In some technical schemes of the present invention, optionally, the transmission assembly also includes a first positioning portion and a second positioning portion, the first end face in the first transmission member faces the hinge arm, the first positioning portion is connected to a portion of the first end face, and the first positioning portion rests against the hinge arm; the second end face in the second transmission member faces the hinge arm, the second positioning portion is connected to a portion of the second end face, and the second positioning portion rests against the hinge arm.

[0025] In this technical solution, the transmission assembly also includes a positioning component, specifically, the transmission assembly also includes a first positioning portion and a second positioning portion, wherein the first end face of the first transmission member faces the hinge arm, and the first end face is in direct or indirect contact with the hinge arm. The first positioning portion is connected to the first end face and is designed to be in close contact with or abut against the hinge arm. The first positioning portion supports the hinge arm and the first transmission member, ensures the stability and accuracy of the first transmission member during the transmission process, and prevents the first transmission member from unnecessary displacement or deflection.

[0026] Like the first transmission member, the second transmission member also has an end surface facing the hinge arm, that is, the second end surface of the second transmission member faces the hinge arm. The second positioning portion is connected to a portion of the second end surface, and the second positioning portion abuts against the hinge arm. The second positioning portion receives the hinge arm and the second transmission member, ensures the stability and accuracy of the second transmission member during the transmission process, and prevents the second transmission member from unnecessary displacement or deflection.

[0027] The first positioning portion and the second positioning portion provide stable support and positioning for the first transmission member and the second transmission member through contact with the hinge arm, which helps to reduce transmission errors caused by vibration or external forces.

[0028] The design of the first positioning portion and the second positioning portion ensures that during the transmission process, the first transmission member and the second transmission member can move according to a predetermined trajectory and angle.

[0029] In summary, the transmission assembly cooperates closely with the hinge arm through the first transmission member, the second transmission member, and the first positioning part and the second positioning part that cooperate therewith, thereby realizing a stable and accurate transmission function. This design not only improves the operating performance of the cooking device door, enables the door to be accurately opened by changing tracks, avoids collision between the door and the box, but also brings a smoother and more reliable use experience to the user.

[0030] In some technical schemes of the present invention, optionally, based on the case where the pin shaft is arranged on the hinge arm, the pin shaft includes a first pin shaft and a second pin shaft, the transmission assembly is arranged at the first end of the hinge housing, and the distance from the first pin shaft to the second end of the hinge housing is smaller than the distance from the second pin shaft to the second end of the hinge housing; the transmission groove includes a first transmission groove and a second transmission groove, the first pin shaft is inserted into the first transmission groove, and the second pin shaft is inserted into the second transmission groove, and from the first end of the hinge housing to the second end of the hinge housing, the first pin shaft includes a connected straight groove and an arc groove, wherein, in the folded position, the first side of the hinge housing is away from the hinge arm, and from the first end of the hinge housing to the second end of the hinge housing, the straight groove is inclined toward the first side, and the arc groove is bent toward the first side, and the distance between the second transmission groove and the first side first increases and then decreases.

[0031] In this technical solution, the utility model sets the structure of the pin shaft and the transmission groove. First, for the pin shaft part, the present application sets a situation based on that the pin shaft is arranged on the hinge arm, and the pin shaft includes a first pin shaft and a second pin shaft, and the transmission assembly is arranged at the first end of the hinge shell, and the distance from the first pin shaft to the second end of the hinge shell is smaller than the distance from the second pin shaft to the second end of the hinge shell; this layout helps to achieve a specific motion trajectory when the hinge shell rotates, so as to realize the change of track and open the door body, and can avoid rotation interference.

[0032] For the transmission groove part, the transmission groove corresponds to the pin shaft, and the transmission groove includes a first transmission groove and a second transmission groove. The first pin shaft is inserted in the first transmission groove, and the second pin shaft is inserted in the second transmission groove.

[0033] The utility model sets the shape of the transmission groove to achieve the required motion trajectory. Specifically, from the first end to the second end of the hinge shell, the transmission groove of the first pin shaft includes a linear groove and an arc groove that are connected. In the folded position (that is, when the door body is closed), the first side of the hinge shell is away from the hinge arm, the linear groove is inclined toward this side, and the arc groove is bent to the same side. The spacing between the second transmission groove and the first side of the hinge shell first increases and then decreases. This design allows the hinge shell to change track during the rotation process, that is, the door body will change its motion trajectory during the opening process.

[0034] When the door body rotates from the folded position (closed) to the unfolded position (opened), the first pin shaft and the second pin shaft move in the first transmission groove and the second transmission groove respectively. Due to the special design of the groove shape, the hinge housing (and the door body connected thereto) will achieve a track-changing motion during the rotation process, which allows the door body to avoid interference with the box or other components when opening. This design also allows the door body to move more smoothly when opening, improving the user experience.

[0035] For the track change track in the drop-down door hinge assembly, the initial state (folded position): the door body is in a closed state and fits tightly with the box body. The first pin and the second pin are respectively located at the starting positions of their respective transmission grooves. The first side of the hinge housing is away from the hinge arm, and the linear groove is inclined toward this side.

[0036] Start opening: The user operates the door body and starts to open the door body. The first pin shaft slides down along the linear groove, which will cause the hinge housing to start moving downward and slightly outward because the linear groove is inclined toward the first side. At the same time, the second pin shaft also starts to move in its second transmission groove, but due to its farther position, the main impact is not yet significant at this time.

[0037] Track change stage: As the door body opens further, the first pin shaft enters the arc groove part. The arc groove bends toward the first side, which causes the motion trajectory of the hinge housing to change and begin to move along a more curved path. At this time, the second pin shaft also begins to enter the arc part of its transmission groove, but its influence is still small, mainly cooperating with the first pin shaft to achieve the overall motion trajectory. The door body begins to open outward, first rising and then falling along the shape of the arc groove.

[0038] Fully open: When the door is fully opened, the first pin and the second pin are located at the end positions of their respective transmission slots. The hinge housing has moved along the predetermined track change path, so that the door can avoid interference with the box or other components when it is opened. The door is fully opened, and the user can easily take and place items or perform other operations.

[0039] In some technical solutions of the present invention, optionally, the first pin shaft includes a first shaft body and a second shaft body, the first shaft body is connected to the hinge arm; the second shaft body is rotatably connected to the first shaft body, the first shaft body and the second shaft body extend in the same direction, and the second shaft body is inserted into the first transmission groove.

[0040] In this technical solution, the utility model sets the component structure of the first pin shaft, the first pin shaft includes a first shaft body and a second shaft body, the first shaft body is connected to the hinge arm, thereby realizing the first pin shaft is stably set on the hinge arm.

[0041] The second shaft is rotatably connected to the first shaft, that is, the second shaft can rotate relative to the first shaft, the first shaft and the second shaft extend in the same direction, and the second shaft is inserted into the first transmission groove. Through the second shaft, the sliding can be converted into a pipeline, so that the friction between the first pin shaft and the groove wall of the first transmission groove is smaller, thereby improving the smoothness of the movement of the first pin shaft, and thereby improving the smoothness of the door body opening and closing.

[0042] In some technical schemes of the utility model, optionally, the pull-down door hinge assembly also includes: a transmission rod and a first elastic member, the first end of the transmission rod is rotatably connected to the hinge arm; a first elastic member, the first end of the first elastic member is connected to the second end of the transmission rod, and the second end of the first elastic member is connected to the hinge arm, in the folded position, the first elastic member is in a first state, and in the unfolded position, the first elastic member is in a second state; wherein the deformation amount of the first elastic member in the second state is greater than the deformation amount in the first state.

[0043] In this technical solution, the drop-down door hinge assembly also includes a transmission rod and a first elastic member, and these two components work together to achieve smooth folding and hovering unfolding of the door.

[0044] The first end of the transmission rod is rotatably connected to the hinge arm, and the transmission rod can rotate along with the movement of the hinge arm.

[0045] The second end of the transmission rod is connected to the first elastic member. When the transmission rod rotates, it drives the first elastic member to deform accordingly.

[0046] The first end of the first elastic member is connected to the second end of the transmission rod, and the second end is connected to the hinge arm.

[0047] The first elastic member has different deformation amounts in two states: in the folded position, the first elastic member is in the first state, and the deformation amount is small. When the door body is in the folded position, the relative position between the transmission rod and the hinge arm makes the first elastic member not need to bear too much tension or compression force, and the door body can be closed smoothly.

[0048] In the unfolded position, the first elastic member is in the second state, and the deformation amount at this time is greater than the deformation amount in the first state. This is because when the door body changes from the folded position to the unfolded position, the transmission rod will rotate at a certain angle relative to the hinge arm, which will drive the first elastic member to deform more to provide necessary support and buffering.

[0049] When the door body transitions from the folded position to the unfolded position, the relative positions of the hinge arm and the transmission rod will change, which will cause the first elastic member to gradually transition from the first state to the second state, and its deformation will gradually increase. In this process, the first elastic member will provide the necessary resistance to ensure that the door body can be unfolded smoothly and slowly to avoid sudden impact or rebound.

[0050] At the same time, since the first elastic member has a large torque in the unfolded position, when the door body attempts to move from the unfolded position to the folded position, the torque of the first elastic member will provide a reverse torque. When the first elastic member is extended, the spring tension provided by the first elastic member is equal to the torque generated by the weight of the door body, thereby enabling the door body to hover at any angle when opened.

[0051] On the contrary, when the door transitions from the unfolded position to the folded position, the first elastic member will gradually return to the first state from the second state, and its deformation will gradually decrease. In this process, the first elastic member will release the energy stored previously, helping the door to fold more smoothly. During the door closing process, the first elastic member provides a spring tension greater than the torque generated by the weight of the door when it retracts, so that the door can be closed automatically.

[0052] In some technical solutions of the present invention, the hinge housing includes a shell and an adjustment assembly, the shell is connected to the hinge arm; the adjustment assembly is connected to the shell, the second end of the first elastic member is connected to the adjustment assembly, and the adjustment assembly is used to adjust the position of the second end of the first elastic member relative to the shell.

[0053] In this technical solution, with respect to the specific structure of the hinge housing, the utility model provides a hinge housing including a shell and an adjustment assembly, and these two parts cooperate with each other to achieve adjustment of the position of the second end of the first elastic member.

[0054] The housing is the main part of the hinge arm, and the housing is usually made of a strong and durable material to ensure that it can withstand various forces and pressures during the operation of the drop-down door. Specifically, the housing is firmly connected to other parts of the hinge by means such as screws, welding, etc.

[0055] The adjustment assembly is used to adjust the position of the second end of the first elastic member relative to the housing. This adjustment function allows the user or installer to adjust the deformation range of the first elastic member according to factors such as the weight of the door and the frequency of use, thereby achieving smoother and more stable door operation.

[0056] The first end of the first elastic member is connected to the second end of the transmission rod, and the second end is connected to the housing through the adjustment assembly. This connection mode allows the first elastic member to change its tension and position according to the adjustment of the adjustment assembly.

[0057] When the hovering position or tension of the drop-down door needs to be adjusted, the user or installer can change the position of the second end of the first elastic member relative to the housing by adjusting the assembly. This adjustment can be achieved by rotating the adjustment screw, sliding the slide rail or operating the knob. After the adjustment is completed, the first elastic member will be in a new tension state, thereby changing the performance and stability of the drop-down door during folding and unfolding. Through proper adjustment, it can be ensured that the drop-down door can achieve smooth and stable operation in different usage scenarios and conditions, providing users with a more flexible and convenient door operation experience.

[0058] In some technical solutions of the utility model, optionally, the adjustment component includes a mounting seat and an adjustment rod, the mounting seat is connected to the shell; the adjustment rod is connected to the mounting seat, the position of the adjustment rod can be adjusted relative to the mounting seat, and the second end of the first elastic member is connected to the adjustment rod.

[0059] In this technical solution, with regard to the specific structure of the adjustment component, the utility model is configured such that the adjustment component includes a mounting seat and an adjustment rod, wherein the mounting seat is connected to the shell to achieve connection between the adjustment component and the shell.

[0060] The adjusting rod is connected to the mounting seat, and the position of the adjusting rod can be adjusted relative to the mounting seat. The second end of the first elastic member is connected to the adjusting rod, and the position of the mounting seat is fixed relative to the shell. By adjusting the position of the adjusting rod, the position of the second end of the first elastic member can be conveniently changed to achieve the tension state of the first elastic member.

[0061] In some technical schemes of the utility model, optionally, the pull-down door hinge assembly also includes: a third pin shaft, connected to the transmission rod, a first guide groove is provided on the hinge arm, the third pin shaft is passed through the first guide groove, the first guide groove extends along the length direction of the hinge shell, and the third pin shaft is used to slide along the first guide groove.

[0062] In this technical solution, the pull-down door hinge assembly also includes a third pin shaft, which is connected to the transmission rod, and the third pin shaft can move synchronously with the transmission rod.

[0063] The hinge arm is provided with a first guide groove, the third pin shaft is passed through the first guide groove, the first guide groove extends along the length direction of the hinge housing, and the third pin shaft is used to slide along the first guide groove.

[0064] During the movement of the transmission rod and the hinge arm, the first guide groove limits the third pin shaft, so that the transmission rod and the hinge arm can move accordingly, thereby realizing the opening and closing of the door body.

[0065] In some technical solutions of the utility model, optionally, a sliding groove is provided on the hinge arm, and in the folded position, the sliding groove is inclined in a direction away from the first elastic member from the first end of the sliding groove to the second end of the sliding groove, and in the folded position, the end of the transmission rod is located at the first end of the sliding groove, and in the unfolded position, the end of the transmission rod is located at the second end of the sliding groove; wherein, in the folded position, the first elastic member is in a deformed state.

[0066] In this technical solution, a sliding groove is provided on the hinge arm, and in the folded position, the sliding groove is inclined in a direction away from the first elastic member from the first end of the sliding groove to the second end of the sliding groove. In the folded position, the end of the transmission rod is located at the first end of the sliding groove, and one end of the first elastic member is fixed relative to the first end of the sliding groove. In the unfolded position, the end of the transmission rod is located at the second end of the sliding groove, and one end of the first elastic member is fixed relative to the second end of the sliding groove. The position of one end of the first elastic member changes, so even if the other end of the elastic member retracts, the first elastic member does not fully recover, that is, in the folded position, the first elastic member is in a deformed state, and the elastic member at this time will provide a closing force to the door body, so that the door body is closed more tightly.

[0067] In some technical solutions of the utility model, the transmission rod optionally includes a transmission rod body, a fourth pin and a second roller. The first end of the transmission rod body is connected to the first elastic member; the fourth pin is connected to the second end of the transmission rod body, and the fourth pin is inserted into the sliding groove; the second roller is sleeved on the fourth pin, and the second roller is in rolling contact with the inner wall of the sliding groove.

[0068] In this technical solution, for the transmission rod, the utility model sets the transmission rod to specifically include a transmission rod body, a fourth pin shaft and a second roller, wherein the first end of the transmission rod body is connected to the first elastic member, thereby realizing the connection between the transmission rod as a whole and the first elastic member.

[0069] The fourth pin shaft is connected to the second end of the transmission rod body, and the fourth pin shaft is inserted into the sliding groove, that is, is arranged in the sliding groove on the hinge arm.

[0070] During the movement of the hinge arm, the fourth pin moves in the sliding groove accordingly, so that the transmission rod body is displaced, pulling the first elastic member to deform the first elastic member, and because the fourth pin is set in the sliding groove on the hinge arm, the first elastic member is deformed in accordance with the movement direction of the hinge arm. When the door is opened, the first elastic member provides an elastic force equal to the torque generated by the weight of the door when it is extended, so that the door can be suspended at any angle when it is opened. During the closing process of the door, the spring provides an elastic force greater than the torque generated by the weight of the door when it retracts, so that the door can be closed automatically.

[0071] The second roller is sleeved on the fourth pin shaft, and the second roller is in rolling contact with the inner wall of the sliding groove. Through the second roller, the sliding motion of the fourth pin shaft is converted into rolling, which reduces friction and improves the smoothness of the movement of the fourth pin shaft.

[0072] On the second aspect, the utility model proposes a cooking device, which includes a box body and a door body, and the door body is used to open or close the box body; such as the pull-down door hinge assembly in the above technical solution, so the air conditioner provided by the utility model has all the beneficial effects of the compressor provided in the above technical solution.

[0073] The cooking device proposed in the utility model comprises the pull-down door hinge assembly in any of the above technical solutions, and therefore has all the beneficial effects of the pull-down door hinge assembly in any of the above technical solutions.

[0074] The cooking device comprises a box body and a door body, wherein the door body is used to open or close the box body, so that the cooking device forms a cooking space, or a user can take food in and out of the box body.

[0075] 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

[0076] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0077] Figure 1 One of the structural schematic diagrams of a cooking device in the prior art is shown;

[0078] Figure 2 The second structural schematic diagram of a cooking device in the prior art is shown;

[0079] in, Figure 1 and Figure 2 The corresponding relationship between the names of the drawings and the component numbers is as follows:

[0080] 100' cooking equipment, 102' door, 104' cabinet.

[0081] Figure 3 One of the structural schematic diagrams of the pull-down door hinge assembly in the embodiment of the utility model is shown;

[0082] Figure 4 Shows Figure 3 An exploded view of the drop door hinge assembly in the illustrated embodiment;

[0083] Figure 5 One of the structural schematic diagrams of the hinge housing in the pull-down door hinge assembly in the embodiment of the utility model is shown in the folded position;

[0084] Figure 6 The second structural schematic diagram shows a hinge housing in a pull-down door hinge assembly in an embodiment of the utility model in a folded position;

[0085] Figure 7 One of the structural schematic diagrams of the hinge housing in the pull-down door hinge assembly in the embodiment of the utility model is shown in a folded position and an unfolded position;

[0086] Figure 8 Shows Figure 7 A partial enlarged view of the hinge assembly A of the drop-down door in the illustrated embodiment;

[0087] Fig. 9 The second structural schematic diagram shows the hinge assembly of the drop-down door in the embodiment of the utility model between the folded position and the unfolded position;

[0088] Fig.10 Shows Fig. 9 A partial enlarged view of the hinge assembly B of the drop-down door in the illustrated embodiment;

[0089] Fig.11 A schematic structural diagram showing a hinge housing in a hinge assembly of a drop door in an embodiment of the utility model in an unfolded position;

[0090] Fig.12 Shows Fig.11 A partial enlarged view of the hinge assembly C of the drop-down door in the illustrated embodiment;

[0091] Fig.13 The schematic diagram of the structure of the cooking device in the embodiment of the utility model is shown.

[0092] in, Figures 3 to 13 The corresponding relationship between the names of the drawings and the component numbers is as follows:

[0093] 100 drop-down door hinge assembly, 102 hinge arm, 104 top surface, 106 bottom surface, 108 housing, 110 first guide groove, 112 sliding groove, 114 adjustment assembly, 116 mounting seat, 118 adjustment rod, 120 hinge housing, 122 first side, 124 transmission assembly, 126 first transmission member, 128 first end surface, 130 second transmission member, 132 second end surface, 134 first positioning portion, 136 second positioning portion, 138 pin shaft, 140 first Pin shaft, 142 first shaft body, 144 second shaft body, 146 second pin shaft, 148 transmission groove, 150 first transmission groove, 152 straight groove, 154 arc groove, 156 second transmission groove, 162 transmission rod, 164 transmission rod body, 166 fourth pin shaft, 168 second roller, 170 first elastic member, 172 third pin shaft, 174 first roller, 176 first mounting member, 178 second mounting member, 200 cooking equipment, 202 door body, 204 box body. DETAILED DESCRIPTION

[0094] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0095] 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0096] Refer to the following Figures 3 to 13 A drop-down door hinge assembly 100 and a cooking device 200 are described according to some embodiments of the present invention.

[0097] like Figure 3 , Figure 4 , Figure 5 , Fig.12 and Fig.13 As shown, in some embodiments of the present invention, a pull-down door hinge assembly 100 is proposed. The pull-down door hinge assembly 100 is used for a cooking device 200. The cooking device 200 includes a box body 204 and a door body 202. The door body 202 is used to open or close the box body 204. The pull-down door hinge assembly 100 includes a hinge arm 102, a hinge housing 120 and a transmission assembly 124. The hinge arm 102 is used to connect with the box body 204; the hinge housing 120 is used to connect with the door body 202; the transmission assembly 124 is connected to the hinge housing 120, and a pin shaft 138 is provided on one of the hinge arm 102 and the transmission assembly 124, and a transmission groove 148 is provided on the other. The pin shaft 138 is used to slide in the transmission groove 148 so that the hinge housing 120 can rotate relative to the hinge arm 102 between a folded position and an unfolded position; wherein the first side of the hinge arm (such as Figure 5 and Fig.12 In the folded position, the distance between the first side of the hinge arm 102 and the hinge housing 120 is L1, and in the unfolded position, the distance between the first side of the hinge arm 102 and the hinge housing 102 is L2, L1>L2, taking the top surface 104 or the bottom surface 106 of the hinge arm 102 as the reference plane, the height of the hinge housing 120 in the folded position is lower than that in the unfolded position.

[0098] The utility model provides a pull-down door hinge assembly 100 for a cooking device 200. The cooking device 200 includes a box body 204 and a door body 202, and the door body 202 is connected to the box body 204 through the pull-down door hinge assembly 100 to realize the opening and closing of the door body 202. The pull-down door hinge assembly 100 can realize the door opening of the door body 202, avoid the interference between the bottom of the door body 202 and the box body 204, and there is no need to reserve a gap between the bottom of the door body 202 and the box body 204, thereby improving the aesthetics of the cooking device 200.

[0099] The drop-down door hinge assembly 100 includes a hinge arm 102, a hinge housing 120, and a transmission assembly 124. The hinge arm 102 is connected to the housing 204 of the cooking device 200, so that the drop-down door hinge assembly 100 is connected to the housing 204 of the cooking device 200. The hinge arm 102 provides a stable support point for the rotation of the door body 202, ensuring the stability of the door body 202 during the opening and closing process.

[0100] The hinge housing 120 is connected to the door body 202 of the cooking device 200 and is a directly connected part for the door body 202 to rotate. The hinge housing 120 can generate relative movement with the hinge arm 102 to realize the opening and closing of the door body 202.

[0101] The transmission assembly 124 connects the hinge housing 120 and the hinge arm 102. A pin 138 is disposed on one of the hinge arm 102 and the transmission assembly 124, and a transmission slot 148 is disposed on the other. For example, the hinge arm 102 is provided with a pin 138, and the transmission assembly 124 is provided with a transmission slot 148, or the transmission assembly 124 is provided with a pin 138, and the hinge arm 102 is provided with a transmission slot 148.

[0102] When a force is applied to the door body 202, the pin shaft 138 slides in the transmission groove 148, and the hinge housing 120 is driven by the transmission assembly 124 to rotate relative to the hinge arm 102, so that the hinge housing 120 rotates relative to the hinge arm 102 between the folded position and the unfolded position.

[0103] like Figure 5 As shown, when the door body 202 is closed, the hinge housing 120 is in a folded position, and the distance between the first side of the hinge arm 102 and the hinge housing 120 is L1. In this position, the door body 202 can fit tightly on the box body 204 to ensure the sealing of the cooking device 200.

[0104] When the door body 202 needs to be opened, the hinge housing 120 is rotated to the unfolded position relative to the hinge arm 102 by the action of the transmission assembly 124. Fig.12As shown, the distance between the first side of the hinge arm 102 and the hinge housing 102 is L2, L1>L2, that is, when the door body 202 is opened, the movement trajectory of the door body 202 is to open obliquely outward while the end at the bottom moves upward, and then the entire door body 202 moves upward and to the left around the rotation point for a certain distance, avoiding interference with the box body 204 or other equipment components.

[0105] In the folded position, the hinge housing 120 is relatively low with the top surface 104 or the bottom surface 106 of the hinge arm 102 as the reference plane, thereby reducing the space occupied by the upper part of the box 204 when the door 202 is closed, thereby improving the space utilization rate. When the door 202 is rotated to the unfolded position, the height of the hinge housing 120 increases, so that the door 202 can move downward smoothly when opened, while maintaining a certain distance from the box 204, so that the user can take in and out food or perform other operations.

[0106] In summary, the pull-down door hinge assembly 100 proposed in the present invention realizes the change of track and opening of the door body 202 of the cooking equipment 200 through the transmission assembly 124, thereby improving the space utilization and convenience of the cooking equipment 200, providing users with a more comfortable and smooth use experience, avoiding the collision between the bottom of the door body 202 and the box body 204, improving the aesthetics of the cooking equipment 200, and ensuring the brand texture.

[0107] Specifically, the hinge arm 102 is detachably connected to the box body 204 .

[0108] Specifically, the hinge housing 120 is detachably connected to the door body 202 .

[0109] like Figure 4 As shown, in some embodiments of the present invention, optionally, the transmission assembly 124 includes a first transmission member 126 and a second transmission member 130, the first transmission member 126 is connected to the hinge housing 120; the second transmission member 130 is connected to the hinge housing 120, and the hinge arm 102 is located between the first transmission member 126 and the second transmission member 130; wherein, based on the case where the pin shaft 138 is arranged on the hinge arm 102, a transmission groove 148 is provided on the first transmission member 126 and the second transmission member 130, and based on the case where the transmission groove 148 is arranged on the hinge arm 102, a pin shaft 138 is provided on the first transmission member 126 and the second transmission member 130.

[0110] In this embodiment, with regard to the specific structure of the transmission component 124, the utility model is configured such that the transmission component 124 includes a first transmission member 126 and a second transmission member 130, the first transmission member 126 is connected to the hinge housing 120, the second transmission member 130 is connected to the hinge housing 120, and the second transmission member 130 cooperates with the first transmission member 126 to realize transmission.

[0111] Specifically, the first transmission member 126 and the second transmission member 130 have the same structure, thereby facilitating processing of the transmission assembly 124 .

[0112] Specifically, a bolt hole is opened at one end of the hinge housing 120, and the drop-down door hinge assembly 100 also includes at least two first mounting members 176, one first mounting member 176 is penetrated by a bolt hole and abuts against the first transmission member 126, so that the first transmission member 126 is set on the hinge housing 120, and the other first mounting member 176 is penetrated by a bolt hole and abuts against the second transmission member 130, so that the second transmission member 130 is set on the hinge housing 120.

[0113] The hinge arm 102 is located between the first transmission member 126 and the second transmission member 130 , and is rotatably connected to the first transmission member 126 and the second transmission member 130 . The hinge arm 102 can rotate between the first transmission member 126 and the second transmission member 130 within a certain angle range.

[0114] On the one hand, based on the fact that the pin 138 is provided on the hinge arm 102, a transmission groove 148 is provided on the first transmission member 126 and the second transmission member 130. When the hinge arm 102 is located between the first transmission member 126 and the second transmission member 130, the pin 138 is inserted into the transmission groove 148 on the first transmission member 126 and the second transmission member 130. When the hinge arm 102 moves, the pin 138 moves in the transmission groove 148, thereby driving the first transmission member 126 and the second transmission member 130 to move accordingly, and the pin 138 is limited by the groove wall in the transmission groove 148, thereby realizing the track-changing movement of the door body 202.

[0115] By setting the transmission assembly 124 to include a first transmission member 126 and a second transmission member 130, so that the hinge arm 102 is located between the first transmission member 126 and the second transmission member 130, the stability of the cooperation between the hinge arm 102 and the transmission assembly 124 can be improved, and the occurrence of jamming or rotational deviation caused by unilateral transmission can be avoided.

[0116] On the other hand, a transmission groove 148 is provided on the hinge arm 102, and a pin shaft 138 is provided on the first transmission member 126 and the second transmission member 130. When the hinge arm 102 moves, the transmission groove 148 limits the pin shaft 138, and the pin shaft 138 moves in the transmission groove 148, thereby driving the first transmission member 126 and the second transmission member 130 to move.

[0117] In summary, the utility model sets the structure of the transmission assembly 124, which includes the first transmission member 126 and the second transmission member 130. The structure of the transmission assembly 124 is flexible and changeable, and the layout of the pin 138 and the transmission groove 148 can be selected according to specific application scenarios and requirements. Through reasonable structural design, accurate and reliable transmission control can be achieved to meet the needs of different equipment and systems.

[0118] like Figure 4 As shown, in some embodiments of the present invention, optionally, the transmission assembly 124 also includes a first positioning portion 134 and a second positioning portion 136, the first end face 128 in the first transmission member 126 faces the hinge arm 102, the first positioning portion 134 is connected to a portion of the first end face 128, and the first positioning portion 134 abuts against the hinge arm 102; the second end face 132 in the second transmission member 130 faces the hinge arm 102, the second positioning portion 136 is connected to a portion of the second end face 132, and the second positioning portion 136 abuts against the hinge arm 102.

[0119] In this embodiment, the transmission assembly 124 further includes a positioning component, specifically, the transmission assembly 124 further includes a first positioning portion 134 and a second positioning portion 136, wherein the first end surface 128 of the first transmission member 126 faces the hinge arm 102, and the first end surface 128 is in direct or indirect contact with the hinge arm 102. The first positioning portion 134 is connected to the first end surface 128, and is designed to be in close contact with or abut against the hinge arm 102. The first positioning portion 134 supports the hinge arm 102 and the first transmission member 126, ensures the stability and accuracy of the first transmission member 126 during the transmission process, and prevents the first transmission member 126 from unnecessary displacement or deflection.

[0120] Similar to the first transmission member 126, the second transmission member 130 also has an end surface facing the hinge arm 102, that is, the second end surface 132 of the second transmission member 130 faces the hinge arm 102. The second positioning portion 136 is connected to a portion of the second end surface 132, and the second positioning portion 136 abuts against the hinge arm 102. The second positioning portion 136 receives the hinge arm 102 and the second transmission member 130, ensures the stability and accuracy of the second transmission member 130 during the transmission process, and prevents the second transmission member 130 from unnecessary displacement or deflection.

[0121] The first positioning portion 134 and the second positioning portion 136 provide stable support and positioning for the first transmission member 126 and the second transmission member 130 by contacting the hinge arm 102 , which helps to reduce transmission errors caused by vibration or external forces.

[0122] The design of the first positioning portion 134 and the second positioning portion 136 ensures that during the transmission process, the first transmission member 126 and the second transmission member 130 can move according to a predetermined trajectory and angle.

[0123] In summary, the transmission assembly 124 cooperates closely with the hinge arm 102 through the first transmission member 126, the second transmission member 130, and the first positioning portion 134 and the second positioning portion 136, thereby realizing a stable and accurate transmission function. This design not only improves the operating performance of the door 202 of the cooking device 200, so that the door 202 can be accurately opened and changed, and avoids the door 202 from colliding with the box 204, but also brings a smoother and more reliable use experience to the user.

[0124] like Figure 4 , Figure 5 , Figure 6 and Fig.13 As shown, in some embodiments of the present invention, optionally, based on the case where the pin shaft 138 is arranged on the hinge arm 102, the pin shaft 138 includes a first pin shaft 140 and a second pin shaft 146, the transmission assembly 124 is arranged at the first end of the hinge housing 120, and the distance between the first pin shaft 140 and the second end of the hinge housing 120 is smaller than the distance between the second pin shaft 146 and the second end of the hinge housing 120; the transmission groove 148 includes a first transmission groove 150 and a second transmission groove 156, the first pin shaft 140 is inserted into the first transmission groove 150, and the second pin shaft 146 is inserted into the first transmission groove 150. Connected to the second transmission groove 156, from the first end of the hinge housing 120 to the second end of the hinge housing 120, the first pin shaft 140 includes a connected straight groove 152 and an arc groove 154, wherein, in the folded position, the first side 122 of the hinge housing 120 is away from the hinge arm 102, and from the first end of the hinge housing 120 to the second end of the hinge housing 120, the straight groove 152 is inclined toward the first side 122, and the arc groove 154 is bent toward the first side 122, and the distance between the second transmission groove 156 and the first side 122 first increases and then decreases.

[0125] In this embodiment, the utility model sets the structure of the pin 138 and the transmission groove 148. First, for the pin 138 part, the present application sets it based on the case where the pin 138 is arranged on the hinge arm 102, the pin 138 includes a first pin 140 and a second pin 146, the transmission assembly 124 is arranged at the first end of the hinge housing 120, and the distance from the first pin 140 to the second end of the hinge housing 120 is smaller than the distance from the second pin 146 to the second end of the hinge housing 120; this layout helps to achieve a specific motion trajectory when the hinge housing 120 rotates, so as to realize the track change and opening of the door body 202, and can avoid rotation interference.

[0126] Regarding the transmission groove 148 part, the transmission groove 148 corresponds to the pin shaft 138 , and the transmission groove 148 includes a first transmission groove 150 and a second transmission groove 156 . The first pin shaft 140 is inserted into the first transmission groove 150 , and the second pin shaft 146 is inserted into the second transmission groove 156 .

[0127] The utility model sets the shape of the transmission groove 148 to achieve the required motion trajectory. Specifically, from the first end to the second end of the hinge housing 120, the transmission groove 148 of the first pin shaft 140 includes a linear groove 152 and an arc groove 154 that are connected. In the folded position (i.e., when the door body 202 is closed), the first side 122 of the hinge housing 120 is away from the hinge arm 102, the linear groove 152 is inclined toward this side, and the arc groove 154 is bent toward the same side. The spacing between the second transmission groove 156 and the first side 122 of the hinge housing 120 first increases and then decreases. This design allows the hinge housing 120 to change track during rotation, that is, the door body 202 will change its motion trajectory during the opening process.

[0128] When the door body 202 rotates from the folded position (closed) to the unfolded position (opened), the first pin shaft 140 and the second pin shaft 146 move in the first transmission groove 150 and the second transmission groove 156 respectively. Due to the special design of the groove shape, the hinge housing 120 (and the door body 202 connected thereto) will achieve a track-changing motion during the rotation process, which enables the door body 202 to avoid interference with the box body 204 or other components when opening. This design also enables the door body 202 to move more smoothly when opening, thereby improving the user experience.

[0129] For the track change track in the drop-down door hinge assembly 100, as shown in FIG. Figure 5 and Figure 6 As shown, in the initial state (folded position), the door body 202 is in a closed state and fits tightly with the box body 204. The first pin 140 and the second pin 146 are respectively located at the starting positions of their respective transmission grooves 148. The first side 122 of the hinge housing 120 faces away from the hinge arm 102, and the linear groove 152 is inclined toward this side.

[0130] Start opening: Figure 7 and Figure 8 As shown, the user operates the door body 202 and starts to open the door body 202. The first pin shaft 140 slides downward along the linear groove 152, which causes the hinge housing 120 to start moving downward and slightly outward because the linear groove 152 is inclined toward the first side 122. At the same time, the second pin shaft 146 also starts to move in its second transmission groove 156, but because it is located far away, the main impact is not yet significant at this time.

[0131] Change of track stage: Fig. 9 and Fig.10As shown, as the door body 202 is further opened, the first pin 140 enters the arc groove 154. The arc groove 154 bends toward the first side 122, which causes the motion trajectory of the hinge housing 120 to change and begin to move along a more curved path. At this time, the second pin 146 also begins to enter the arc portion of its transmission groove 148, but its influence is still small, mainly to cooperate with the first pin 140 to achieve the overall motion trajectory. The door body 202 begins to rise and then fall along the shape of the arc groove 154 while opening outward.

[0132] Fully open: Fig.11 and Fig.12 As shown, when the door body 202 is fully opened, the first pin shaft 140 and the second pin shaft 146 are respectively located at the end positions of their respective transmission grooves 148. The hinge housing 120 has moved along the predetermined track change path, so that the door body 202 can avoid interference with the box body 204 or other components when it is opened. The door body 202 is fully opened, and the user can conveniently take and put items or perform other operations.

[0133] Specifically, Figure 8 , Fig.10 and Fig.12 The line F in FIG. 1 shows the movement trajectory of the first pin shaft 140 when the hinge housing 120 moves from the folded position to the unfolded position.

[0134] like Figure 7 and Figure 8 As shown in FIG. 1 , the hinge housing 120 begins to unfold, and the first pin 140 moves outward and upward. Fig. 9 and Fig.10 As shown in FIG. 1 , the hinge housing 120 is further unfolded, and the first pin shaft 140 moves outward and downward. Fig.11 and Fig.12 As shown, the hinge housing 120 is in the unfolded position, and the first pin 140 moves to the end of the slot.

[0135] Specifically, Figure 8 , Fig.10 and Fig.12 The line D in FIG. 1 shows the movement trajectory of the second pin shaft 146 when the hinge housing 120 moves from the folded position to the unfolded position.

[0136] As Figure 7 and Figure 8 As shown, the hinge housing 120 begins to unfold, and the second pin 146 moves outward and upward. Fig. 9 and Fig.10 As shown in FIG. 1 , the hinge housing 120 is further unfolded, and the second pin shaft 146 moves outward and downward. Fig.11 and Fig.12 As shown, the hinge housing 120 is in the unfolded position, and the first pin 140 moves to the end of the slot.

[0137] Specifically, Fig.12 As shown, Fig.12 The line E in FIG. 1 shows the total movement trajectory of a point on the hinge housing 120 from the folded position to the unfolded position.

[0138] like Figure 4 As shown, in some embodiments of the present invention, optionally, the first pin shaft 140 includes a first shaft body 142 and a second shaft body 144, the first shaft body 142 is connected to the hinge arm 102; the second shaft body 144 is rotatably connected to the first shaft body 142, the first shaft body 142 and the second shaft body 144 extend in the same direction, and the second shaft body 144 is inserted into the first transmission groove 150.

[0139] In this embodiment, the utility model sets the component structure of the first pin shaft 140, and the first pin shaft 140 includes a first shaft body 142 and a second shaft body 144. The first shaft body 142 is connected to the hinge arm 102, thereby realizing the first pin shaft 140 being stably set on the hinge arm 102.

[0140] The second shaft body 144 is rotatably connected to the first shaft body 142, that is, the second shaft body 144 can rotate relative to the first shaft body 142, the first shaft body 142 and the second shaft body 144 extend in the same direction, and the second shaft body 144 is inserted into the first transmission groove 150. Through the second shaft body 144, the sliding can be converted into a pipeline, so that the friction between the first pin shaft 140 and the groove wall of the first transmission groove 150 is smaller, thereby improving the smoothness of the movement of the first pin shaft 140, and thereby improving the smoothness of the opening and closing of the door body 202.

[0141] In some embodiments of the utility model, optionally, the pull-down door hinge assembly 100 also includes: a transmission rod 162 and a first elastic member 170, the first end of the transmission rod 162 is rotatably connected to the hinge arm 102; the first elastic member 170, the first end of the first elastic member 170 is connected to the second end of the transmission rod 162, and the second end of the first elastic member 170 is connected to the hinge arm 102, in the folded position, the first elastic member 170 is in a first state, and in the unfolded position, the first elastic member 170 is in a second state; wherein the deformation of the first elastic member 170 in the second state is greater than the deformation in the first state.

[0142] In this embodiment, the drop-down door hinge assembly 100 further includes a transmission rod 162 and a first elastic member 170 , and these two components cooperate with each other to achieve smooth folding and hovering unfolding of the door.

[0143] The first end of the transmission rod 162 is rotatably connected to the hinge arm 102 , and the transmission rod 162 can rotate along with the movement of the hinge arm 102 .

[0144] The second end of the transmission rod 162 is connected to the first elastic member 170 . When the transmission rod 162 rotates, it drives the first elastic member 170 to deform accordingly.

[0145] The first end of the first elastic member 170 is connected to the second end of the transmission rod 162 , and the second end of the first elastic member 170 is connected to the hinge arm 102 .

[0146] The first elastic member 170 has different deformation amounts in two states: in the folded position, the first elastic member 170 is in the first state, and the deformation amount is small. When the door body 202 is in the folded position, the relative position between the transmission rod 162 and the hinge arm 102 makes the first elastic member 170 not need to bear too much tension or compression force, and the door body 202 can be closed smoothly.

[0147] In the unfolded position, the first elastic member 170 is in the second state, and the deformation amount in this state is greater than the deformation amount in the first state. This is because when the door body 202 changes from the folded position to the unfolded position, the transmission rod 162 will rotate at a certain angle relative to the hinge arm 102, which will drive the first elastic member 170 to deform more to provide necessary support and buffer.

[0148] When the door body 202 transitions from the folded position to the unfolded position, the relative positions of the hinge arm 102 and the transmission rod 162 will change, which will cause the first elastic member 170 to gradually transition from the first state to the second state, and its deformation will gradually increase. In this process, the first elastic member 170 will provide necessary resistance to ensure that the door body 202 can be unfolded smoothly and slowly to avoid sudden impact or rebound.

[0149] At the same time, since the first elastic member 170 has a large torque in the unfolded position, when the door body 202 attempts to move from the unfolded position to the folded position, the torque of the first elastic member 170 will provide a reverse torque. When the first elastic member 170 is extended, the spring tension provided by the first elastic member 170 is equal to the torque generated by the weight of the door body 202, thereby enabling the door body 202 to hover at any angle when the door is opened.

[0150] On the contrary, when the door transitions from the unfolded position to the folded position, the first elastic member 170 will gradually return to the first state from the second state, and its deformation will gradually decrease. In this process, the first elastic member 170 will release the energy stored previously, helping the door to fold more smoothly. When the door body 202 is closing, the first elastic member 170 provides a spring tension greater than the torque generated by the weight of the door body 202 when it retracts, so that the door body 202 can be automatically closed.

[0151] In some embodiments of the present invention, the hinge housing 120 includes a shell 108 and an adjustment assembly 114, the shell 108 is connected to the hinge arm 102; the adjustment assembly 114 is connected to the shell 108, the second end of the first elastic member 170 is connected to the adjustment assembly 114, and the adjustment assembly 114 is used to adjust the position of the second end of the first elastic member 170 relative to the shell 108.

[0152] In this embodiment, with regard to the specific structure of the hinge housing 120 , the utility model provides that the hinge housing 120 includes a shell 108 and an adjustment assembly 114 , and these two parts cooperate together to achieve adjustment of the second end position of the first elastic member 170 .

[0153] The housing 108 is the main part of the hinge arm 102. The housing 108 is usually made of a strong and durable material to ensure that it can withstand various forces and pressures during the operation of the drop-down door. Specifically, the housing 108 is firmly connected to other parts of the hinge by means such as screws, welding, etc.

[0154] The adjustment assembly 114 is used to adjust the position of the second end of the first elastic member 170 relative to the housing 108. This adjustment function allows the user or installer to adjust the deformation range of the first elastic member 170 according to factors such as the weight and frequency of use of the door, thereby achieving smoother and more stable door operation.

[0155] The first end of the first elastic member 170 is connected to the second end of the transmission rod 162, and the second end is connected to the housing 108 through the adjustment assembly 114. This connection allows the first elastic member 170 to change its tension and position according to the adjustment of the adjustment assembly 114.

[0156] When the suspension position or tension of the drop-down door needs to be adjusted, the user or installer can change the position of the second end of the first elastic member 170 relative to the housing 108 by adjusting the assembly 114. This adjustment can be achieved by rotating an adjusting screw, sliding a slide rail, or operating a knob.

[0157] After the adjustment is completed, the first elastic member 170 will be in a new tension state, thereby changing the performance and stability of the drop-down door during folding and unfolding. Through appropriate adjustment, it can be ensured that the drop-down door can achieve smooth and stable operation in different usage scenarios and conditions, providing users with a more flexible and convenient door operation experience.

[0158] like Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of the present invention, optionally, the adjustment assembly 114 includes a mounting seat 116 and an adjustment rod 118, the mounting seat 116 is connected to the shell 108; the adjustment rod 118 is connected to the mounting seat 116, the position of the adjustment rod 118 can be adjusted relative to the mounting seat 116, and the second end of the first elastic member 170 is connected to the adjustment rod 118.

[0159] In this embodiment, regarding the specific structure of the adjustment component 114 , the utility model is configured such that the adjustment component 114 includes a mounting seat 116 and an adjustment rod 118 , wherein the mounting seat 116 is connected to the housing 108 to achieve connection between the adjustment component and the housing 108 .

[0160] The adjusting rod 118 is connected to the mounting seat 116, and the position of the adjusting rod 118 can be adjusted relative to the mounting seat 116. The second end of the first elastic member 170 is connected to the adjusting rod 118, and the mounting seat 116 is fixed relative to the shell 108. By adjusting the position of the adjusting rod 118, the position of the second end of the first elastic member 170 can be conveniently changed to achieve a change in the tension state of the first elastic member 170.

[0161] Specifically, when adjusting the position of the second end of the first elastic member 170 through the adjustment component 114, the adjustment rod 118 can be rotated. The adjustment rod 118 is provided with a thread. By rotating the adjustment rod 118, the adjustment rod 118 can be moved forward and backward relative to the mounting seat 116, thereby changing the position of the second end of the first elastic member 170, thereby realizing a change in the tension state of the first elastic member 170.

[0162] In addition, a nut may be sleeved on one end of the adjusting rod 118 , and the position of the adjusting rod 118 relative to the mounting seat 116 may be changed by rotating the nut, thereby changing the position of the second end of the first elastic member 170 .

[0163] Specifically, Figure 3 As shown, a bolt hole is provided on one end of the hinge housing 120 , and the drop-down door hinge assembly 100 further includes a second mounting member 178 , through which the hinge housing 120 is penetrated and abuts against the mounting seat 116 , thereby fixing the mounting seat to the housing 108 .

[0164] like Figure 3 and Figure 4 As shown, in some embodiments of the utility model, optionally, the pull-down door hinge assembly 100 also includes: a third pin shaft 172, which is connected to the transmission rod 162, and a first guide groove 110 is provided on the hinge housing 120, and the third pin shaft 172 is passed through the first guide groove 110, and the first guide groove 110 extends along the length direction of the hinge housing 120, and the third pin shaft 172 is used to slide along the first guide groove 110.

[0165] In this embodiment, the drop-down door hinge assembly 100 further includes a third pin shaft 172 , which is connected to the transmission rod 162 , and the third pin shaft 172 can move synchronously with the transmission rod 162 .

[0166] The hinge housing 120 is provided with a first guide groove 110, and the third pin 172 is inserted into the first guide groove 110. The first guide groove 110 is arranged along the length direction of the hinge housing 120 ( Figure 5 The third pin shaft 172 extends in the direction indicated by the arrow H in FIG. 1 , and is used to slide along the first guide groove 110 .

[0167] During the movement of the transmission rod 162 and the hinge arm 102 , the first guide groove 110 limits the third pin shaft 172 , so that the transmission rod 162 and the hinge arm 102 can move accordingly, thereby realizing the opening and closing of the door body 202 .

[0168] Specifically, the drop-down door hinge assembly 100 further includes: a first roller 174 , which is sleeved on the third pin 172 , and the third pin is in rolling contact with the wall surface of the first guide groove 110 .

[0169] like Fig.11 and Fig.12 As shown, in some embodiments of the utility model, optionally, a sliding groove 112 is provided on the hinge arm 102. In the folded position, from the first end of the sliding groove 112 to the second end of the sliding groove 112, the sliding groove 112 is inclined in a direction away from the first elastic member 170. In the folded position, the end of the transmission rod 162 is located at the first end of the sliding groove 112, and in the unfolded position, the end of the transmission rod 162 is located at the second end of the sliding groove 112; wherein, in the folded position, the first elastic member 170 is in a deformed state.

[0170] In this embodiment, a sliding groove 112 is provided on the hinge arm 102. In the folded position, from the first end of the sliding groove 112 to the second end of the sliding groove 112, the sliding groove 112 is inclined in a direction away from the first elastic member 170, that is, the sliding groove 112 is an upwardly inclined groove body.

[0171] In the folded position, the end of the transmission rod 162 is located at the first end of the sliding groove 112, and one end of the first elastic member 170 is fixed relative to the first end of the sliding groove 112. In the unfolded position, the end of the transmission rod 162 is located at the second end of the sliding groove 112, and one end of the first elastic member 170 is fixed relative to the second end of the sliding groove 112. The position of one end of the first elastic member 170 changes. Therefore, even if the other end of the first elastic member 170 retracts, the first elastic member 170 does not fully recover, that is, in the folded position, the first elastic member 170 is in a deformed state. At this time, the elastic member will provide a closing force to the door body 202, so that the door body 202 is closed more tightly.

[0172] like Figure 3 , Figure 4 , Fig.11 and Fig.12 As shown, in some embodiments of the present invention, the transmission rod 162 optionally includes a transmission rod body 164, a fourth pin 166 and a second roller 168. The first end of the transmission rod body 164 is connected to the first elastic member 170; the fourth pin 166 is connected to the second end of the transmission rod body 164, and the fourth pin 166 is inserted into the sliding groove 112; the second roller 168 is sleeved on the fourth pin 166, and the second roller 168 rolls in contact with the inner wall of the sliding groove 112.

[0173] In this embodiment, for the transmission rod 162, the utility model sets the transmission rod 162 to specifically include a transmission rod body 164, a fourth pin shaft 166 and a second roller 168, wherein the first end of the transmission rod body 164 is connected to the first elastic member 170, thereby realizing the connection between the transmission rod 162 as a whole and the first elastic member 170.

[0174] The fourth pin shaft 166 is connected to the second end of the transmission rod body 164 . The fourth pin shaft 166 passes through the sliding slot 112 , that is, is disposed in the sliding slot 112 on the hinge arm 102 .

[0175] During the movement of the hinge arm 102, the fourth pin 166 moves in the sliding groove 112, so that the transmission rod body 164 is displaced, and the first elastic member 170 is pulled to deform the first elastic member 170. Since the fourth pin 166 is arranged in the sliding groove 112 on the hinge arm 102, the first elastic member 170 is deformed in the direction of movement of the hinge arm 102. When the door body 202 is opened, the first elastic member 170 provides an elastic force equal to the torque generated by the weight of the door body 202 when it is extended, so that the door body 202 can hover at any angle when it is opened. When the door body 202 is closed, the spring provides an elastic force greater than the torque generated by the weight of the door body 202 when it is retracted, so that the door body 202 can be automatically closed.

[0176] The second roller 168 is sleeved on the fourth pin shaft 166 , and the second roller 168 rolls in contact with the inner wall of the sliding groove 112 . The second roller 168 converts the sliding motion of the fourth pin shaft 166 into rolling motion, thereby reducing friction and improving the smoothness of the motion of the fourth pin shaft 166 .

[0177] Specifically, a mounting groove is formed at the second end of the transmission rod body 164, and mounting holes are formed at the groove walls on both sides of the mounting groove. The fourth pin shaft 166 passes through the mounting holes at the groove walls on both sides and is arranged in the mounting groove. Both ends of the fourth pin shaft 166 protrude from the mounting holes, thereby realizing that the fourth pin shaft 166 is stably arranged on the transmission rod body 164.

[0178] There are two second rollers 168 , which are sleeved on both ends of the fourth pin shaft 166 protruding from the mounting hole and located outside the mounting groove, so that the second rollers 168 can rotate smoothly.

[0179] In some embodiments of the present invention, Fig.13 As shown, a cooking device 200 is proposed, and the cooking device 200 includes a box body 204 and a door body 202, and the door body 202 is used to open or close the box body 204; such as the drop-down door hinge assembly 100 in the above embodiment.

[0180] The cooking device 200 proposed in the present invention comprises the pull-down door hinge assembly 100 in any of the above embodiments, and therefore has all the beneficial effects of the pull-down door hinge assembly 100 in any of the above embodiments.

[0181] The cooking device 200 includes a box body 204 and a door body 202 . The door body 202 is used to open or close the box body 204 , so that the cooking device 200 forms a cooking space, or a user can take food out of the box body 204 .

[0182] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0183] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0184] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drop door hinge assembly, characterized in that: Used for a cooking device, the cooking device comprises a box body and a door body, the door body is used to open or close the box body, and the pull-down door hinge assembly comprises: A hinge arm, used to connect with the box body; A hinge housing, used to be connected to the door body; a transmission assembly connected to the hinge housing, wherein a pin is provided on one of the hinge arm and the transmission assembly, and a transmission groove is provided on the other, wherein the pin is used to slide in the transmission groove so that the hinge housing rotates relative to the hinge arm between a folded position and an unfolded position; In which, the first side of the hinge arm faces away from the hinge shell, and in the folded position, the distance between the first side of the hinge arm and the hinge shell is L1, and in the unfolded position, the distance between the first side of the hinge arm and the hinge shell is L2, L1>L2, and taking the top surface or bottom surface of the hinge arm as the reference plane, the height of the hinge shell in the folded position is lower than the height in the unfolded position.

2. The pull-down door hinge assembly according to claim 1, characterized in that: The transmission assembly comprises: A first transmission member connected to the hinge housing; a second transmission member connected to the hinge housing, wherein the hinge arm is located between the first transmission member and the second transmission member; Among them, based on the case where the pin shaft is arranged on the hinge arm, the transmission groove is provided on the first transmission member and the second transmission member, and based on the case where the transmission groove is arranged on the hinge arm, the pin shaft is provided on the first transmission member and the second transmission member.

3. The drop-down door hinge assembly according to claim 2, characterized in that: The transmission assembly also includes: A first positioning portion, wherein a first end surface of the first transmission member faces the hinge arm, the first positioning portion is connected to a portion of the first end surface, and the first positioning portion abuts against the hinge arm; A second positioning portion, a second end surface of the second transmission member faces the hinge arm, the second positioning portion is connected to a portion of the second end surface, and the second positioning portion abuts against the hinge arm.

4. The drop-down door hinge assembly according to claim 2, characterized in that: In the case where the pin shaft is arranged on the hinge arm, the pin shaft includes a first pin shaft and a second pin shaft, the transmission assembly is arranged at the first end of the hinge housing, and the distance between the first pin shaft and the second end of the hinge housing is smaller than the distance between the second pin shaft and the second end of the hinge housing; The transmission groove includes a first transmission groove and a second transmission groove, the first pin shaft is inserted into the first transmission groove, and the second pin shaft is inserted into the second transmission groove. From the first end of the hinge housing to the second end of the hinge housing, the first transmission groove includes a connected straight groove and an arc groove. Wherein, in the folded position, the first side of the hinge housing is away from the hinge arm, and in the direction from the first end of the hinge housing to the second end of the hinge housing, the straight groove is inclined toward the first side, the arc groove is bent toward the first side, and the distance between the second transmission groove and the first side first increases and then decreases.

5. The drop-down door hinge assembly according to claim 4, characterized in that: The first pin shaft comprises: A first shaft body connected to the hinge arm; The second shaft body is rotatably connected to the first shaft body, the first shaft body and the second shaft body extend in the same direction, and the second shaft body is inserted into the first transmission groove.

6. The drop-down door hinge assembly according to any one of claims 1 to 5, characterized in that: The drop-down door hinge assembly also includes: A transmission rod, a first end of which is rotatably connected to the hinge arm; a first elastic member, wherein a first end of the first elastic member is connected to a second end of the transmission rod, and a second end of the first elastic member is connected to the hinge arm, wherein the first elastic member is in a first state in the folded position and in a second state in the unfolded position; Wherein, the deformation amount of the first elastic member in the second state is greater than the deformation amount in the first state.

7. The drop-down door hinge assembly according to claim 6, characterized in that: The hinge housing comprises: A housing connected to the hinge arm; An adjusting component is connected to the shell, the second end of the first elastic member is connected to the adjusting component, and the adjusting component is used to adjust the position of the second end of the first elastic member relative to the shell.

8. The drop-down door hinge assembly according to claim 7, characterized in that: The adjustment component comprises: A mounting seat connected to the housing; An adjusting rod is connected to the mounting seat, the position of the adjusting rod can be adjusted relative to the mounting seat, and the second end of the first elastic member is connected to the adjusting rod.

9. The drop door hinge assembly according to claim 6, characterized in that: The drop-down door hinge assembly also includes: The third pin is connected to the transmission rod. The hinge housing is provided with a first guide groove. The third pin is inserted into the first guide groove. The first guide groove extends along the length direction of the hinge housing. The third pin is used to slide along the first guide groove.

10. The drop door hinge assembly according to claim 6, characterized in that: The hinge arm is provided with a sliding groove, and in the folded position, from the first end of the sliding groove to the second end of the sliding groove, the sliding groove is inclined in a direction away from the first elastic member, in the folded position, the end of the transmission rod is located at the first end of the sliding groove, and in the unfolded position, the end of the transmission rod is located at the second end of the sliding groove; Wherein, in the folded position, the first elastic member is in a deformed state.

11. The drop door hinge assembly according to claim 10, characterized in that: The transmission rod comprises: A transmission rod body, wherein a first end of the transmission rod body is connected to the first elastic member; a fourth pin shaft connected to the second end of the transmission rod body, and the fourth pin shaft is inserted into the sliding groove; The second roller is sleeved on the fourth pin shaft, and the second roller is in rolling contact with the inner wall of the sliding groove.

12. A cooking device, characterized in that: include: A box body and a door body, wherein the door body is used to open or close the box body; The pull-down door hinge assembly according to any one of claims 1 to 11, connected to the box body and the door body.

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