Hinge assembly, drawer

Abstract

This invention provides a hinge assembly and a drawer. The hinge assembly includes a hinge fixing seat, a hinge plate, and a pivoting connection portion disposed between the hinge fixing seat and the hinge plate. The hinge fixing seat and the hinge mating seat form a receiving space for accommodating the hinge plate. The hinge plate includes an arc-shaped arm, a support arm and a connecting arm respectively connecting the two ends of the arc-shaped arm. The free end of the connecting arm is rotatably connected to the hinge fixing seat through the pivoting connection portion, which is located at the center of the arc-shaped arm. This structure results in a smaller area swept by the hinge plate during rotation and a smaller opening for the hinge plate to pass through, making the overall hinge assembly simple and aesthetically pleasing.

Description

Technical Field

[0001] This invention relates to the field of hinge technology, and more particularly to a hinge assembly and a drawer with a lid. Background Technology

[0002] To meet users' diverse and personalized storage needs, refrigeration equipment is equipped with a food preservation and sealing drawer. The sealing drawer used in refrigerators generally relies on the weight of the top cover to ensure the sealing effect between the top cover and the sealing drawer. However, the existing hinge structure cannot meet the appearance requirements of the food preservation and sealing drawer or the strength requirements for supporting the cover. Summary of the Invention

[0003] The present invention provides a novel hinge assembly and drawer to solve one of the above-mentioned problems.

[0004] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0005] This invention provides a hinge assembly, the hinge assembly comprising:

[0006] The hinge fixing seat, the hinge mating seat, the hinge plate, and the pivot connection part disposed between the hinge fixing seat and the hinge plate, wherein the hinge fixing seat and the hinge mating seat form a receiving space for receiving the hinge plate;

[0007] The hinge plate includes an arc-shaped arm, a support arm and a connecting arm that are respectively connected to both ends of the arc-shaped arm. The free end of the connecting arm is rotatably connected to the hinge fixing seat through the pivot connection part, which is located at the center of the arc-shaped arm.

[0008] Furthermore, the pivot connection includes a pivot shaft provided on the hinge fixing seat and a shaft hole provided on the free end of the connecting arm that cooperates with the pivot shaft, the shaft hole being located at the center of the arc-shaped arm.

[0009] Furthermore, the hinge plate has an initial state in which the arc-shaped arm is stacked with the hinge fixing seat and a used state in which the arc-shaped arm extends out of the hinge fixing seat. In the initial state, the support arm and the connection points of the arc-shaped arm and the connecting arm are respectively located on both sides of the center of the arc-shaped arm.

[0010] Furthermore, the total length of the arc-shaped arm and the support arm is greater than the length of the connecting arm. The support arm has an inner side adjacent to the pivot connection, and the arc-shaped arm has an inner arc surface close to the pivot connection. In use, the straight-line distance from the inner side of the support arm to the pivot connection is less than the straight-line distance from the inner arc surface furthest from the pivot connection to the pivot connection.

[0011] Furthermore, the hinge fixing seat includes a fixing plate arranged parallel to the plane where the arc arm is located, and a limiting plate connected to one end of the fixing plate. The limiting plate has an opening for the hinge plate to pass through. The pivot connection part is arranged close to the limiting plate and at a certain distance from the opening. The connection between the connecting arm and the arc arm forms a limiting groove. When the arc arm extends out of the hinge fixing seat, the limiting plate is located in the limiting groove.

[0012] Furthermore, the hinge fixing seat also includes a left side plate for connecting the limiting plate and the fixing plate. The left side plate has adjacent openings, and a limiting part is provided on the inner side wall of the left side plate. The outer side of the arc-shaped arm is provided with a plurality of limiting blocks that cooperate with the limiting part.

[0013] Furthermore, the hinge mating seat includes a mating plate parallel to the plane of the fixed plate, a mating part protruding from the mating plate into the receiving cavity to mate with the pivot connection part, and an extension plate mates with the hinge plate, the shape of the extension plate being consistent with the shape of the hinge plate.

[0014] Furthermore, the hinge mating seat also includes a right side plate and a bottom plate for connecting the fixed plate and the limiting plate respectively. The right side plate includes a vertical part arranged adjacent to the mating part and an inclined part below the vertical part. In the initial state of the hinge assembly and the drawer mating, the connecting arm rests on the inclined part. The bottom plate is located at the lower end of the inclined part and is generally arc-shaped and located below the arc-shaped arm.

[0015] Furthermore, the fixing plate and the mating plate are fixed with bolts. A pair of screw holes are provided at opposite corners of the fixing plate and the mating wall. One screw hole penetrates the pivot connection and the mating part along the length of the pivot connection, and the other screw hole is located below the end of the base plate away from the inclined part.

[0016] The present invention also provides a drawer, the drawer comprising an upwardly opening drawer body, a cover for covering the drawer body, and the aforementioned hinge assembly for connecting the cover and the drawer body on the same side, the drawer body having a side wall, the side wall having a receiving cavity for accommodating the hinge assembly, the hinge mating seat being disposed against the inner wall of the side wall, and the end of the support arm away from the hinge fixing seat being fixed to the cover.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the hinge assembly of the present invention, by setting the arc-shaped arm of the hinge plate and the pivot connection part coaxially, makes the area swept by the hinge plate and the opening for the hinge plate to pass through relatively small during the rotation process, so that the appearance of the entire hinge assembly is relatively simple and beautiful. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the hinge assembly in its initial state in one embodiment of the hinge assembly of the present invention.

[0019] Figure 2 yes Figure 1 A three-dimensional structural diagram of the hinge assembly in use in the embodiment.

[0020] Figure 3 yes Figure 2 The front view of the hinge assembly in use in the embodiment.

[0021] Figure 4 yes Figure 1 An exploded view of the components of the hinge assembly at another angle in the embodiment.

[0022] Figure 5 This is a front view of the hinge mating seat in another embodiment of the hinge assembly of the present invention.

[0023] Figure 6 yes Figure 5 A front view of the hinge plate and hinge mating seat in the embodiment.

[0024] Figure 7 This is a three-dimensional structural diagram of the drawer in one embodiment of the present invention with the lid in the open state.

[0025] Figure 8 To cooperate Figure 1 A partial structural diagram of the drawer side panel is shown in the embodiment of the hinge assembly.

[0026] Figure 9 for Figure 8 Enlarged view of the local structure at point A in the middle.

[0027] Figure 10 To cooperate Figure 5 A partial structural diagram of the drawer side panel is shown in the embodiment of the hinge assembly.

[0028] Figure 11 yes Figure 7 A three-dimensional structural diagram of the vacuum pumping device and pressure relief assembly in the embodiment.

[0029] Figure 12 yes Figure 11 A three-dimensional structural diagram of the pressure relief assembly in the open pressure relief state.

[0030] Figure 13 yes Figure 11 A three-dimensional structural diagram of the pressure relief assembly in the off state.

[0031] Figure 14 yes Figure 11 The front view of the middle handle.

[0032] Figure 15 yes Figure 7 A three-dimensional structural diagram of the plastic sealing assembly inside the drawer in the embodiment.

[0033] Figure 16 yes Figure 15 A cross-sectional view of the encapsulated assembly along the AA direction. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0035] It should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the auxiliary diagram. They are used only to simplify the description of the present invention and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. Specifically, in the present invention, the user's operating surface is considered the front, the direction facing the ground is considered lower, and conversely, the direction away from the ground is considered upper. Other descriptions of orientation are defined based on "upper" and "lower."

[0036] In the various illustrations of this invention, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structural parts; therefore, they are only used to illustrate the basic structure of the subject matter of this invention.

[0037] A hinge assembly 10, such as Figures 1 to 6 As shown, the hinge assembly 10 includes: a hinge base 11, a hinge plate 12, and a pivot connection 13 disposed between the hinge base 11 and the hinge plate 12. The hinge plate 12 includes an arc-shaped arm 121, a support arm 123 and a connecting arm 122 respectively connecting the two ends of the arc-shaped arm 121. The free end of the connecting arm 122 is rotatably connected to the hinge base 11 through the pivot connection 13. The pivot connection 13 is located at the center of the arc-shaped arm 121, which makes the area swept by the hinge plate 12 and the opening through which the hinge plate 12 passes relatively small during rotation. This makes the appearance of the entire hinge assembly 10 relatively simple and beautiful. Moreover, the overall structure of the hinge plate 12 of the present invention is relatively compact, which further enhances the overall strength of the hinge assembly 10.

[0038] The hinge assembly 10 of the present invention can be applied to the cooperation between the box body and the cover or the box body and the door body, including the case of opening and closing up and down, opening and closing left and right or opening and closing front and back. The present invention also relates to a drawer with a cover, the drawer including a drawer body 2 and a cover 20 covering the drawer body 2. The present invention will be described in detail with the hinge assembly 10 provided on the same side of the cover 20 and the drawer body 2 as an example.

[0039] In this invention, the hinge plate 12 has an initial state in which at least the arc-shaped arm 121 is stacked with the hinge fixing seat 11 and a use state in which the arc-shaped arm 121 extends out of the hinge fixing seat 11. The maximum extent to which the arc-shaped arm 121 extends out of the hinge fixing seat 11 is the fully open state of the hinge plate 12.

[0040] Specifically, the connecting arm 122 is used to connect the arc-shaped arm 121 and the hinge fixing seat 11. That is, one end of the connecting arm 122 is connected to the arc-shaped arm 121, and the other end is fixed to the hinge fixing seat 11 through the pivot connection part 13. In this embodiment, when the hinge plate 12 is in the fully open state, the length of the connecting arm 122 is sufficient to not extend beyond the hinge fixing seat 11, further enhancing the overall strength of the hinge plate 12.

[0041] Furthermore, the length of the arc-shaped arm 121 is no more than one-quarter of the circumference of the circle in which the arc-shaped arm 121 is located, that is, the maximum rotation angle of the hinge plate 12 is 90 degrees. At this time, the cover 20 that cooperates with the hinge plate 12 turns from a horizontal state to a vertical state to ensure that the hinge plate 12 can just support the cover 20.

[0042] In this embodiment, the outer side of the arc-shaped arm 121 is provided with several limiting blocks 1211 that cooperate with the hinge fixing seat 11, so that the hinge plate 12 does not need to be fully opened in the use state but is limited to the required position. Preferably, the limiting blocks 1211 are preferably set at a position of 40°, 50°, or 60° relative to the horizontal to improve the user experience.

[0043] Furthermore, the support arm 123 is connected to the end of the arc-shaped arm 121 away from the connecting arm 122. The support arm 123 is used to fix the hinge plate 12 to the cover 20. Preferably, the outer edge of the support arm 123 extends in the vertical direction. When the hinge plate 12 is fully open, the outer edge of the support arm 123 is just in a horizontal state, which is conducive to cooperating with the cover 20 and keeping the cover 20 in a vertical state.

[0044] Furthermore, in the initial state, the connection points of the support arm 123, the arc arm 121, and the connecting arm 122 are located on both sides of the center of the arc arm 121, making the overall structure of the hinge plate 12 compact and further strengthening the strength of the hinge plate 12.

[0045] Furthermore, the total length of the arc-shaped arm 121 and the support arm 123 is greater than the length of the connecting arm 122. The support arm 123 has an inner surface 1231 adjacent to the pivot connection 13. The arc-shaped arm 121 has an inner arc surface 1212 close to the pivot connection 13. In use, the straight-line distance from the inner surface 1231 of the support arm 123 to the pivot connection 13 is less than the straight-line distance from the inner arc surface 1212, which is furthest from the arc-shaped arm 121 to the pivot connection 13. That is, the support arm 123 is in a horizontal position, and the center of gravity of the support arm 123 is lower than the center of gravity of the arc-shaped arm 121, so as to lower the center of gravity of the entire hinge plate 12. Through the mutual cooperation of the cover 20 and the hinge plate 12 and by utilizing the gravity of the cover 20 itself, the cover 20 is kept in a vertical state.

[0046] Preferably, the angle between the straight line on the outer wall of the support arm 123 and the tangent at the connection point of the arc arm 121 and the connecting arm 122 is between 60° and 70°, so that when the arc arm 121 extends out of the hinge fixing seat 11, the connecting arm 122 is still inside the hinge fixing seat 11, so as to ensure the stability of the overall structure of the hinge assembly 10.

[0047] The connection between the connecting arm 122 and the arc-shaped arm 121 forms a limiting groove 124. In use, the limiting groove 124 cooperates with the hinge fixing seat 11 to keep the hinge plate 12 in a stable state.

[0048] Preferably, the connecting arm 122, the arc arm 121, and the support arm 123 are integrally formed to further enhance the strength of the hinge plate 12, so that the hinge plate 12 can support the heavier cover 20.

[0049] In a preferred embodiment of the present invention, the hinge fixing seat 11 includes a fixing plate 111 arranged parallel to the plane of the arc-shaped arm 121 and a limiting plate 112 connected to one end of the fixing plate 111. The limiting plate 112 is provided with an opening 114 for the hinge plate 12 to pass through. The hinge fixing seat 11 is used to fix the hinge plate 12 and realize the hinge plate 12 to rotate with the cover 20 on the plane of the fixing plate 111.

[0050] Specifically, the limiting plate 112 is vertically disposed at the upper end of the fixing plate 111 and extends toward the side where the hinge plate 12 is located. When the hinge plate 12 is rotated 90° to be in a fully open state, the limiting plate 112 is located in the limiting groove 124 at the connection between the connecting arm 122 and the arc arm 121. The connecting arm 122 is attached to the lower part of the limiting plate 112. The limiting plate 112 is used to limit the maximum opening angle of the hinge plate 12. At this time, the support arm 123 is in a horizontal state that is conducive to supporting the cover 20.

[0051] Furthermore, the hinge fixing base 11 also includes a left side plate 113 for connecting the limiting plate 112 and the fixing plate 111. The left side plate 113 is disposed adjacent to the opening 114, that is, the left side plate 113 is disposed adjacent to the hinge plate 12.

[0052] In this embodiment, as Figure 4 As shown, a limiting part 1121 is provided on the inner sidewall of the left side plate 113. The limiting part 1121 is used to cooperate with the limiting block 1211 on the arc-shaped arm 121 to ensure that the hinge plate 12 can be stopped in the required position. Preferably, the limiting part 1121 is made of an elastic material, which facilitates deformation when pressed with the limiting block 1211 on the arc-shaped arm 121, thereby allowing the hinge plate 12 to freely switch between the initial state and the use state.

[0053] The shape of the limiting part 1121 includes, but is not limited to, triangle, circle, rectangle or trapezoid.

[0054] In a preferred embodiment of the present invention, the pivot connection portion 13 is disposed near the limiting plate 112 and at a certain distance from the opening 114. Specifically, the pivot connection portion 13 includes a rotating shaft 131 disposed on the hinge fixing seat 11 and a shaft hole 132 disposed at the free end of the connecting arm 122 that cooperates with the rotating shaft 131. The shaft hole 132 is located at the center of the arc-shaped arm 121, that is, the hinge plate 12 is sleeved on the outside of the rotating shaft 131 through the shaft hole 132 so that the hinge plate 12 can rotate relative to the rotating shaft 131.

[0055] It is understood that the pivot 131 can also be located at the free end of the connecting arm 122, and the shaft hole 132 can be located on the fixed plate 111, both of which can achieve the purpose of the hinge plate 12 rotating relative to the fixed plate 111.

[0056] As a preferred embodiment of the present invention, such as Figures 5 to 6As shown, the hinge assembly 10 also includes a hinge mating seat 15 that cooperates with the hinge fixing seat 11. The hinge fixing seat 11 and the hinge mating seat 15 form a receiving space (not shown) for accommodating the hinge plate 12. Specifically, the hinge mating seat 15 includes a mating plate 151 parallel to the plane where the fixing plate 111 is located, a right side plate 155 for connecting the fixing plate 111 and the limiting plate 112 respectively, so that the hinge plate 12 is located in the receiving space. The hinge assembly 10 forms a complete structure, improving the applicability of the hinge assembly 10.

[0057] Furthermore, the mating plate 151 is provided with a mating part 153 that protrudes from the mating plate 151 into the receiving space and is mated and limited with the pivot connection part 13. In this embodiment, the mating part 153 is provided with a mating groove that opens toward the rotating shaft 131. When the hinge assembly 10 is in the assembled state, the connecting arm 122 is sleeved on the rotating shaft 131, and the end of the rotating shaft 131 away from the fixed plate 111 is inserted into the mating groove to realize the rotation of the hinge plate 12 in the receiving space.

[0058] Of course, when the pivot 131 of the pivot connection 13 is mounted on the connecting arm 122, the mating part 153 is a mating groove (not shown) that can accommodate the end of the pivot 131 away from the fixed plate 111. Both can enable the hinge plate 12 to rotate between the fixed plate 111 and the mating plate 151, and both are within the protection scope of the present invention.

[0059] Furthermore, the hinge mating seat 15 also includes an extension plate 154 that protrudes from the mating plate 151 into the receiving space 152 and mates with the hinge plate 12. The shape of the extension plate 154 is consistent with the shape of the hinge plate 12, and is used to limit the space of the hinge plate 12 in the thickness direction within the receiving space, thereby effectively preventing the hinge plate 12 from shifting in its thickness direction.

[0060] Furthermore, the right side plate 155 includes a vertical portion 1551 provided with adjacent mating portions 153 and an inclined portion 1552 below the vertical portion 1551. In the initial state, the connecting arm 122 rests on the inclined portion 1552, that is, the inclined portion 1552 is used to support the connecting arm 122 to balance the gravity on the hinge plate 12. When the hinge plate 12 switches from the initial state to the working state, the force used to lift the cover 20 can be effectively reduced, and the overall stability of the hinge assembly 10 can also be ensured.

[0061] The base plate 156 is located at the lower end of the inclined part 1552 and is generally arc-shaped. When the hinge plate 12 is in the initial state, it is located below the arc-shaped arm 121 and plays a supporting and guiding role in the movement of the arc-shaped arm 121.

[0062] It is understood that the right side plate 155 and the bottom plate 156 on the hinge mating seat 15 can also be set at corresponding positions on the hinge fixing seat 11, so as to achieve the purpose of cooperating with the hinge plate 12.

[0063] Furthermore, the fixing plate 111 and the mating plate 151 are fixed with bolts. A pair of screw holes 14 are provided at opposite corners of the fixing plate 111 and the mating plate 151, which can balance the force between the fixing plate 111 and the mating plate 151 and strengthen the overall hinge assembly 10. In this embodiment, one screw hole 14 is located at the corner where the pivot connection part 13 is located, and the other screw hole 14 is located below the end of the base plate 156 away from the inclined part 1552. Specifically, the screw hole 14 passes through the pivot connection part 13 and the mating plate 151 along the length direction of the pivot connection part 13. That is, by using bolts to pass through the pivot 131 and the mating part 153 in sequence, the fixing points between the two can be reduced, making the appearance of the hinge assembly 10 simpler.

[0064] The present invention also provides a drawer, such as Figures 7 to 10 As shown, the drawer includes an upward-opening drawer body 2, a cover 20 for covering the drawer body 2, and a hinge assembly 10 for connecting the cover 20 and the drawer body 2 on the same side. The hinge fixing seat 11 is fixed to the side wall 21 of the drawer body 2, and the end of the support arm 123 away from the hinge fixing seat 11 is fixed to the cover 20. Specifically, the hinge assembly 10 is fixed to the rear end of the drawer body 2 and the cover 20 to facilitate operation by the user at the front of the drawer.

[0065] As a preferred embodiment of the present invention, such as Figure 7 As shown, the sidewall 21 is provided with a receiving cavity 211 to accommodate the hinge assembly 10. It can be understood that when the hinge assembly 10 does not have a hinge mating seat 15, the side of the sidewall 21 corresponding to the hinge fixing seat 11 acts as a mating plate 151, such as... Figure 9 As shown, the mating plate 151 is provided with a mating part 153 that mates with the pivot connection part 13 and an extension plate 154 that mates with the hinge plate 12. The vertical part 1551, the inclined part 1552, and the bottom plate 156 between the fixing plate 111 and the mating plate 153 have the same structure and function as those provided on the hinge mating seat 15, and will not be described in detail hereafter.

[0066] When the hinge assembly 10 has a hinge mating seat 15, the hinge assembly 10 is directly fixed in the receiving cavity, and in conjunction with... Figure 10 As shown, this improves the overall usability of the hinge assembly.

[0067] In a preferred embodiment of the present invention, the drawer further includes a control module 70, which includes a control unit (not shown) located in the accommodating space and an operation display panel 71 that is communicatively connected to the control unit. Specifically, the control unit is communicatively connected to the vacuum device 30 and is used to receive, process, and send signals to achieve precise control over the specific operation of the drawer.

[0068] In a preferred embodiment of the present invention, the drawer is a vacuum drawer, which has a cavity 23 for accommodating items. The drawer also includes a vacuum device 30. In order to increase the sealing of the drawer, in this embodiment, the cover 20 is provided with a sealing ring 21 that cooperates with the drawer body 2 to meet the diverse needs of users.

[0069] Furthermore, combined Figure 11 As shown, the vacuum device 30 includes a vacuum pump 31, a vacuum tube 32 connecting the vacuum pump 31 and the cavity 23, an exhaust pipe 33 connecting the vacuum pump 31 and the outside, and a pressure sensor 34 connecting the vacuum tube 32, so as to realize the vacuuming operation before the sealing operation.

[0070] In this embodiment, the vacuum pumping device 30 is located at the front of the accommodating space and is arranged adjacent to the control module 70. In order to optimize the connection method of each pipeline of the vacuum pump 31, the vacuum pumping device also includes a four-way connector 35 connecting the vacuum pump 31. The exhaust pipe 33 and the four-way connector 35 are arranged at intervals on the vacuum pump 31.

[0071] The pressure sensor 34 is communicatively connected to the control unit to transmit the pressure status inside the cavity 23 to the control unit, facilitating subsequent operations by the control unit.

[0072] In a preferred embodiment of the present invention, the drawer further includes a pressure relief assembly 40 connected to the vacuum device 30, such as... Figures 11 to 14 As shown, the pressure relief assembly 40 includes a vent pipe 41 connected to the vacuum pump 30, a movable structure 42 for sealing the opening of the vent pipe 41 away from the vacuum pump 30, a handle 43 located on the side of the movable structure 42, and a transmission structure 44 configured between the movable structure 42 and the handle 43. The transmission structure 44 is configured such that the handle 43 can drive the movable structure 42 to move closer to or away from the opening of the vent pipe 41. In this embodiment, the pressure relief assembly 40 is located longitudinally on the outside of the drawer. The vent pipe 41 is connected to the vacuum pump 31 through a four-way connector 35. In this embodiment, the pressure relief assembly 40 cooperates with the vacuum pump 30 to reduce the number of openings in the cavity 23 that connect to the outside, which is beneficial for maintaining the vacuum level inside the drawer during the sealing process.

[0073] Specifically, the transmission structure 44 includes a slider 441 disposed on the movable structure 42 and a groove 442 disposed on the side of the handle 43 near the movable structure 42. A through hole (not shown) is provided on the outer wall 13 at a position corresponding to the slider 441. The slider 441 passes through the through hole and cooperates with the groove 442. The handle 43 is provided with a rotating shaft 433. The handle 43 is fixed to the outside of the outer wall through the rotating shaft 433. That is, when the handle 43 is rotated, the handle 43 guides the slider 441 through the groove 442, thereby driving the movable structure 42 to move along the length direction of the through hole.

[0074] Further, the handle 43 includes a handle base 431 and a handle 431. The pivot portion 433 is disposed on the handle base 431. The slide groove 442 is generally arc-shaped and located between the pivot portion 433 and the handle 431. The slide groove 442 has a first end 4421 near the handle 431 and a second end 4422 away from the first end 4421. The distance between the first end 4421 and the pivot portion 433 is greater than the distance between the second end 4422 and the pivot portion 433. When the pressure relief assembly 40 is in the open state, the slider 441 is located at the second end 4421. At this time, the slider 441 is located above the rotating shaft 433. When the pressure relief assembly 40 is in the closed state, the slide groove 442 rotates to the first end 4421 located above the rotating shaft 433. At this time, the slider 441 is located at the first end 4421. Due to the unequal distances from the first end 4421 and the second end 4422 to the rotating shaft 433, the slide groove 442 drives the slider 441 to move up and down relative to the rotating shaft 433, thereby driving the movable structure 42 to move up and down to achieve the switching between the sealed and open states of the vent pipe 41.

[0075] Furthermore, the pressure relief assembly 40 also includes a connector 45 located between the vent pipe 41 and the movable structure 42, for changing the opening direction of the vent pipe 41. In this embodiment, the connector 45 is L-shaped and connects the vent pipe 41 and the movable structure 42.

[0076] Furthermore, the pressure relief assembly 40 also includes a support plate 46 protruding from the outer wall into the receiving space for supporting the movable structure 42, and an elastic member 47 located between the movable structure 42 and the support plate 46. When the movable structure 42 approaches the connector 45, the elastic member 47 is in a compressed state, and the elastic force of the elastic member 47 provides an upward resisting force on the movable structure 42, thereby improving the fit between the movable structure 42 and the connector 45.

[0077] Furthermore, the movable structure 42 includes a sealing block 421 adjacent to the connector 45 and a movable block 422 that fixes the sealing block 421. That is, the slider 441 is located on the side of the movable block 422, and the end of the movable block 422 away from the connector 45 cooperates with the elastic member 47. Preferably, the sealing block 421 is made of rubber material to further strengthen the cooperation between the sealing block 421 and the connector 45.

[0078] As a preferred embodiment of the present invention, such as Figures 15-16 As shown, the drawer is equipped with a sealing assembly 60, which ensures that the sealing assembly 60 has a certain distance from the inner wall or the lid 20 when the food is kept at a low temperature. That is, when the sealing assembly 60 is set close to the inner wall, there is a certain distance between the sealing assembly 60 and the lid 20, and when the sealing assembly 60 is set close to the lid 20, there is a certain distance between the sealing assembly 60 and the inner wall. This allows the sealing bag used to hold the food to be connected to the cavity when the sealing function is used, which is conducive to the air being evacuated from the sealing bag.

[0079] In this embodiment, the plastic sealing component 60 is located at the front of the cavity 23 and is at a certain distance from the inner wall. When the plastic sealing function is not used, it does not affect the regular storage function of the drawer.

[0080] Specifically, such as Figures 15-16 As shown, the molding assembly 60 includes a fixing seat 61 disposed in the cavity 23 and a heating plate 62 located on the fixing seat 61. A pressure strip 22 is provided on the cover 20 at a position corresponding to the heating plate 62. During the molding operation, at least one of the fixing seat 61 and the pressure strip 22 moves closer to the other in a controlled manner.

[0081] In this embodiment, the fixing seat 61 and the control module are communicatively connected. When the vacuum inside the cavity 23 reaches the set requirement, the molding assembly 60 starts working. At this time, the control module controls the fixing seat 61 to move upward to the pressure strip 22. After the molding operation is completed, the control module controls the fixing seat 61 to reset. It can be understood that the movement of the fixing seat 61 is a fine adjustment for easy operation.

[0082] Furthermore, the heating plate 62 includes a heating plate body 621 for heating, vertical plates 622 bent downward from both ends of the heating plate body 621, and connecting plates 623 bent towards each other from the ends of the vertical plates 622. The connecting plates 623 are connected to the cables of the refrigeration equipment, so that the distance between the heating plate body 621 and the connecting plates 623 meets the electrical clearance requirements of the electrical appliances, thereby improving electrical safety.

[0083] Furthermore, the fixing base 61 has a fixing base body 611 that supports the heating plate 62. The fixing base body 611 is provided with a groove 612 for accommodating the heating plate 62. The heating plate body 621 is located in the groove 612. Placing the heating plate 62 in the groove 612 increases the safety of electrical use and reduces the amount of heat from the heating plate 62 conducted into the cavity 23.

[0084] Furthermore, the fixing base 61 also includes side plates 613 extending from the four end edges of the fixing base body 611 on the same side, forming a cavity (not shown) between the fixing base body 611 and the side plates 613. The fixing base body 611 is provided with connecting holes 614 that connect the groove 612 and the cavity. The vertical plate 622 passes through the connecting hole 614, and the connecting plate 623 and the vertical plate 622 are both located in the cavity. That is, the heating plate body 621, the vertical plate 622 and the connecting plate 623 are respectively located on both sides of the fixing base body 611, improving electrical safety.

[0085] In this embodiment, the fixing base 61 further includes a support column 616 that protrudes into the cavity from the surface of the fixing base body 611 away from the groove 612 and is used to fix the heating plate 62. The support column 616 is located between the fixing base body 611 and the connecting plate 623. On the one hand, it is used to fix the heating wire 62, and on the other hand, it can ensure that there is a certain distance between the connecting plate 623 and the heating plate body 621 to meet the electrical clearance distance of the electrical appliance. Preferably, the outside of the support column 616 is provided with an insulating layer to prevent short circuit and improve electrical safety.

[0086] Furthermore, the length of the pressure strip 22 is not greater than the length of the groove 612, and the thickness of the pressure strip 22 is not less than the straight-line distance from the heating plate 62 to the cover 20, so that during the sealing process, the pressure strip 22 can apply a downward pressure to the heating plate body 621 in the groove 612, thereby accelerating the completion of the sealing operation.

[0087] It is understandable that the groove 612 may not be provided on the main body 611 of the fixing seat. As long as the heating plate 62 is fixed to each other by the connecting plate 623 and the support column 616, it will not affect the heating plate from being powered on and heating up, thereby achieving the purpose of plastic sealing.

[0088] Furthermore, the sealing assembly 60 also includes a pressure tongue 63 disposed at both ends of the fixing body 611. Specifically, the pressure tongue 63 includes a connecting part 631 fixed on the fixing body 611 and a pressing part 631 extending from the end of the connecting part 631 toward the middle of the fixing body 611. The pressing part 631 is set higher than the heating plate 62, which effectively prevents the sealing bag from shifting position during the vacuuming process and achieves precise sealing.

[0089] It is understood that the pressure tongue 63 can be positioned on both the front and rear sides of the groove 612 to locate the plastic seal bag. In this embodiment, the pressure tongue 63 is located on the rear side of the groove 612, so that the plastic seal bag under the pressure tongue 63 is a certain distance away from the bag opening, which does not affect the vacuuming from the opening of the plastic seal bag, and also makes the heating and sealing position on the plastic seal bag far away from the opening of the plastic seal bag, so as to achieve precise sealing of the plastic seal bag.

[0090] The present invention also provides a refrigeration device (not shown), the refrigeration device including a storage compartment and the above-mentioned drawer disposed in the storage compartment, the drawer being movable back and forth in the storage compartment.

[0091] In summary, the hinge assembly 10 of the present invention, by designing the pivot connection part 13 located at the center of the arc arm 121 of the hinge plate 12, makes the area swept by the hinge plate 12 and the opening through which the hinge plate 12 passes relatively small during the rotation process, resulting in a simple and beautiful appearance of the entire hinge assembly 10.

[0092] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0093] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hinge assembly, characterized in that: include: The hinge fixing seat, the hinge mating seat, the hinge plate, and the pivot connection part disposed between the hinge fixing seat and the hinge plate, wherein the hinge fixing seat and the hinge mating seat form a receiving space for receiving the hinge plate; The hinge plate includes an arc-shaped arm, a support arm and a connecting arm that are respectively connected to both ends of the arc-shaped arm. The free end of the connecting arm is rotatably connected to the hinge fixing seat through the pivot connection part, which is located at the center of the arc-shaped arm. The hinge plate has at least an initial state in which the arc-shaped arm and the hinge fixing seat are stacked, and a working state in which the arc-shaped arm extends out of the hinge fixing seat. The total length of the arc-shaped arm and the support arm is greater than the length of the connecting arm. The support arm has an inner side adjacent to the pivot connection portion, and the arc-shaped arm has an inner arc surface close to the pivot connection portion. In the initial state, the outer edge of the support arm extends vertically. In the working state, the straight-line distance from the inner side of the support arm to the pivot connection portion is less than the straight-line distance from the inner arc surface at the furthest point of the straight-line distance between the arc-shaped arm and the pivot connection portion to the pivot connection portion.

2. The hinge assembly as claimed in claim 1, characterized in that: The pivot connection includes a pivot shaft on the hinge fixing seat and a shaft hole on the free end of the connecting arm that mates with the pivot shaft. The shaft hole is located at the center of the arc-shaped arm.

3. The hinge assembly as claimed in claim 1, characterized in that: In the initial state, the connection points of the support arm, the arc arm, and the connecting arm are located on both sides of the center of the arc arm.

4. The hinge assembly as described in any one of claims 1 to 3, characterized in that: The hinge fixing seat includes a fixing plate arranged parallel to the plane of the arc arm and a limiting plate connected to one end of the fixing plate. The limiting plate has an opening for the hinge plate to pass through. The pivot connection part is arranged close to the limiting plate and at a certain distance from the opening. The connection between the connecting arm and the arc arm forms a limiting groove. When the arc arm extends out of the hinge fixing seat, the limiting plate is located in the limiting groove.

5. The hinge assembly as claimed in claim 4, characterized in that: The hinge fixing seat also includes a left side plate for connecting the limiting plate and the fixing plate. The left side plate has adjacent openings, and a limiting part is provided on the inner side wall of the left side plate. Several limiting blocks that cooperate with the limiting part are provided on the outer side of the arc-shaped arm.

6. The hinge assembly as claimed in claim 4, characterized in that: The hinge mating seat includes a mating plate parallel to the plane of the fixed plate, a mating part protruding from the mating plate into the receiving cavity and mating with the pivot connection part, and an extension plate mating with the hinge plate. The shape of the extension plate is the same as that of the hinge plate.

7. The hinge assembly as claimed in claim 6, characterized in that: The hinge mating seat also includes a right side plate and a bottom plate for connecting the fixed plate and the limiting plate respectively. The right side plate includes a vertical part arranged adjacent to the mating part and an inclined part below the vertical part. In the initial state of the hinge assembly and the drawer mating, the connecting arm rests on the inclined part. The bottom plate is located at the lower end of the inclined part and is generally arc-shaped and located below the arc-shaped arm.

8. The hinge assembly as claimed in claim 7, characterized in that: The fixing plate and the mating plate are fixed with bolts. A pair of screw holes are provided at opposite corners of the fixing plate and the mating wall. One screw hole passes through the pivot connection and the mating part along the length of the pivot connection. The other screw hole is located below the end of the base plate away from the inclined part.

9. A drawer, characterized in that: The invention includes an upward-opening drawer body, a cover for covering the drawer body, and a hinge assembly as described in any one of claims 1 to 8 for connecting the cover and the same side of the drawer body. The drawer body has a side wall, the side wall is provided with a receiving cavity for accommodating the hinge assembly, the hinge mating seat is disposed against the inner wall of the side wall, and one end of the support arm away from the hinge fixing seat is fixed to the cover.

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