Door assembly and storage equipment

Abstract

The invention discloses a door assembly and storage equipment, and belongs to the technical field of refrigeration. The door assembly is applied to the storage equipment, the door assembly comprises a door body, a hinge base, a hinge shaft, a damper and a crank, and the hinge base is used for being installed outside a box body of the storage equipment; one end of the hinge shaft penetrates through the hinge seat and extends into the door body, so that the door body can be mounted on the refrigerator body in an opening and closing manner; one end of the damper is hinged to the hinge base, the other end of the damper is hinged to the first end of the crank, and the second end of the crank is connected with the part, located outside the door body, of the hinge shaft. The display area of the door body is enlarged, the occupied space inside the door body is reduced, and therefore the internal space utilization rate of the door assembly and the storage equipment is increased, the reliability of the door assembly is improved, and the service life of the door assembly is prolonged.

Description

Technical Field

[0001] This application belongs to the technical field of refrigeration, and particularly relates to a door assembly and a storage device. Background Art

[0002] In the design of modern refrigeration equipment, it is often necessary to use a door closer to ensure the sealing effect of the closed door. However, the structure of the current door closer is often relatively complex and large in size, which not only increases the overall weight of the refrigeration equipment, but also limits the effective use of the internal space of the refrigeration equipment and affects the use effect. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the related art. For this purpose, this application provides a door assembly and a storage device, which expand the display area of the door body, reduce the occupied space inside the door body, thereby improving the internal space utilization rate of the door assembly and the storage device, and improving the reliability and service life of the door assembly.

[0004] In a first aspect, this application provides a door assembly for use in a storage device, the door assembly comprising:

[0005] A door body;

[0006] A hinge seat for being mounted outside the box body of the storage device;

[0007] A hinge shaft, one end of the hinge shaft passing through the hinge seat and extending into the door body, so that the door body is pivotally mounted on the box body;

[0008] A damper and a crank, one end of the damper being hinged to the hinge seat, the other end of the damper being hinged to the first end of the crank, and the second end of the crank being connected to the part of the hinge shaft located outside the door body.

[0009] According to the door assembly of this application, since one end of the damper is hinged to the hinge seat mounted outside the box body, and the second end of the crank is connected to the part of the hinge shaft located outside the door body, the door closer formed by the damper and the crank can be integrally arranged outside the door body. Compared with the related art in which the door closer is arranged inside the door frame, it can not only reduce the occupation of the internal space of the door body, reduce the required frame size of the door body, expand the display area of the door body, shift the marginal effect of condensation outward, and reduce the condensation risk; it can also facilitate the disassembly, installation and maintenance of the damper and the crank.

[0010] According to an embodiment of this application, the damper includes:

[0011] A sleeve, hinged to the hinge seat;

[0012] A movable part, one end of the movable part is hinged to the first end of the crank, and the other end is slidably arranged along the axial direction of the sleeve in the sleeve;

[0013] An elastic member is arranged between the sleeve and the movable part.

[0014] According to an embodiment of the present application, the elastic member is always in a deformed state, and the damper has a first state; wherein,

[0015] In the first state, the axial direction of the sleeve is arranged at an angle with the line connecting the second end of the crank and the first end of the crank, and the first end of the crank is located on the side of the second end of the crank close to the box body.

[0016] According to an embodiment of the present application, the box body forms a chamber with an opening. When the door body is in the closed state, the damper is in the first state, and the line connecting the second end of the crank and the first end of the crank is parallel to the orientation of the chamber.

[0017] According to an embodiment of the present application, the damper further has a second state; wherein,

[0018] In the second state, the axial direction of the sleeve is arranged at an angle with the line connecting the second end of the crank and the first end of the crank, and the first end of the crank is located on the side of the second end of the crank away from the box body.

[0019] According to an embodiment of the present application, the damper further has a third state that is free between the first state and the second state; wherein,

[0020] In the third state, the axial direction of the sleeve is parallel to the line connecting the second end of the crank and the first end of the crank.

[0021] According to an embodiment of the present application, in the third state, the deformation amount of the elastic member is the largest.

[0022] According to an embodiment of the present application, the rotation axis of the damper relative to the hinge seat, the rotation axis of the damper relative to the first end of the crank, and the axial direction of the hinge shaft are all parallel; and / or

[0023] The damper and the crank are arranged close to the bottom surface of the door body; and / or

[0024] The hinge shaft forms a through hole, and the through hole penetrates through the hinge shaft along the axial direction of the hinge shaft, and the through hole is used to accommodate a wire harness part.

[0025] According to an embodiment of the present application, it further includes:

[0026] A first limiting member, connected to at least one of the door body and the hinge shaft, and adapted to abut against the hinge seat to limit the rotation range of the door body relative to the box body; and / or

[0027] A second limiting member, disposed between the hinge shaft and the crank, for limiting the axial direction of the hinge shaft and the crank along the hinge shaft.

[0028] In a second aspect, the present application provides a storage device, which includes:

[0029] A box body, forming a compartment; and

[0030] The door assembly as described above, the door body of the door assembly is openably and closably installed on the box body for closing the compartment.

[0031] According to the storage device of the present application, the display area of the door body is enlarged, and the occupied space inside the door body is reduced, thereby improving the internal space utilization rate of the door assembly and the storage device, and improving the reliability and service life of the storage device.

[0032] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0033] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0034] Figure 1 is a partial schematic view of the door assembly provided by the embodiment of the present application;

[0035] Figure 2 is a partial cross-sectional view of the door assembly provided by the embodiment of the present application;

[0036] Figure 3 is a schematic view of the structure of the door assembly provided by the embodiment of the present application with the door body hidden;

[0037] Figure 4 is a schematic view of the structure of the damper in the first state provided by the embodiment of the present application;

[0038] Figure 5 is a schematic view of the structure of the damper in the third state provided by the embodiment of the present application;

[0039] Figure 6 is a schematic view of the structure of the damper in the second state provided by the embodiment of the present application.

[0040] Reference Signs:

[0041] 100, Door body; 200, Hinge shaft; 201, Through hole; 300, Hinge seat;

[0042] 400, Damper; 410, Sleeve;

[0043] 420, Movable part; 421, Transmission rod; 422, Piston head;

[0044] 430, Elastic part;

[0045] 500, Crank; 501, Positioning hole;

[0046] 510, Main body; 520, Transmission shaft;

[0047] 610, Mounting part; 620, Connecting bushing; 630, Connecting shaft;

[0048] 700, First limiting part;

[0049] 900, Wiring harness. Detailed implementation mode

[0050] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0051] The following refers to Figures 1 - 6 Describe the door assembly provided by the embodiment of the present application. The door assembly is applied to a storage device and includes a door body 100, a hinge shaft 200, a hinge seat 300, a damper 400 and a crank 500.

[0052] It should be noted that the storage device in the embodiment can be understood as a general refrigerated storage device, including but not limited to refrigerators, freezers, display cabinets, beverage cabinets, wine cabinets, cold fresh cabinets, and refrigerated vending machines, etc. The storage device has various structural forms and a wide range of applications. This embodiment is described by taking a vertical commercial freezer as an example.

[0053] The hinge seat 300 is used to be installed outside the box body of the storage device; one end of the hinge shaft 200 passes through the hinge seat 300 and extends into the door body 100, so that the door body 100 is pivotally installed on the box body.

[0054] It can be understood that one side of the door body 100 and the box body rotate relative to each other through the hinge shaft 200 passing through the hinge seat 300 to realize the function of opening or closing the compartment formed by the box body. At the same time, since the hinge seat 300 is installed outside the box body, it is also convenient for disassembly, installation and maintenance, and reduces the impact on the compartment space.

[0055] One end of the damper 400 is hinged to the hinge seat 300, the other end of the damper 400 is hinged to the first end of the crank 500, and the second end of the crank 500 is connected to the part of the hinge shaft 200 outside the door body 100. The connection mode between the hinge seat 300 and the box body includes but is not limited to threaded connection.

[0056] It should be noted that one end of the damper 400 is hinged to the hinge seat 300, and the other end is hinged to the first end of the crank 500, so that the damper 400 can transmit the torque when the door body 100 rotates relative to the box body through the crank 500, realizing the smooth closing of the door body 100, reducing impact and noise, and improving the user experience.

[0057] It can be understood that since one end of the damper 400 is hinged to the hinge seat 300 installed outside the box body, and the second end of the crank 500 is connected to the part of the hinge shaft 200 outside the door body 100, the door closer formed by the damper 400 and the crank 500 can be integrally arranged outside the door body 100. Compared with the related art in which the door closer is arranged inside the frame of the door body 100, it can not only reduce the occupation of the internal space of the door body 100, reduce the required frame size of the door body 100, expand the display area of the door body 100, shift the marginal effect of condensation outward, and reduce the condensation risk; but also facilitate the disassembly, installation and maintenance of the damper 400 and the crank 500.

[0058] According to the door assembly provided by the embodiment of the present application, the display area of the door body 100 is expanded, the internal occupied space of the door body 100 is reduced, thereby improving the internal space utilization rate of the door assembly and the storage device, and improving the reliability and service life of the door assembly.

[0059] In some embodiments, such as Figure 3 shown, the rotation axis of the damper 400 relative to the hinge seat 300, the rotation axis of the damper 400 relative to the first end of the crank 500, and the axial direction of the hinge shaft 200 are all parallel.

[0060] It can be understood that by making the rotation axis of the damper 400 relative to the hinge shaft 200, the rotation axis of the damper 400 relative to the first end of the crank 500, and the rotation axis of the door body 100 relative to the box body parallel to each other, the motion interference, additional mechanical stress and wear caused by non-parallel axes can be reduced as much as possible, and the layout of the entire door assembly can be made more compact, reducing the space occupation, making the movement of the door body 100 more stable, and improving the reliability and service life of the entire door assembly.

[0061] In some embodiments, such as Figure 3As shown, the crank 500 includes a main body 510 and a transmission shaft 520. The main body 510 is sleeved on the outside of the hinge shaft 200 through the mounting hole. The transmission shaft 520 is convexly arranged on the side of the main body 510 away from the door body 100 and is spaced from the hinge shaft 200. One end of the damper 400 is rotatably sleeved on the outside of the transmission shaft 520. It should be noted that the shape and size of the main body 510 and the transmission shaft 520 can be designed according to actual needs, and this embodiment does not impose specific restrictions on this. For example, the mounting hole is square, the hinge shaft 200 is a square shaft; the cross section of the transmission shaft 520 is circular.

[0062] It should be noted that “the second end of the crank 500 ” refers to the end of the main body 510 away from the transmission shaft 520 , and the “first end of the crank 500 ” refers to the end of the transmission shaft 520 away from the main body 510 .

[0063] In some embodiments, Figure 1 and Figure 2 As shown, the damper 400 and the crank 500 are disposed close to the bottom surface of the door body 100 .

[0064] It can be understood that the hinge seat 300 is located below the door body 100, the upper end of the hinge shaft 200 is arranged in the door frame of the door body 100, and the lower end of the hinge shaft 200 extends downward and passes through the door body 100 and the hinge seat 300 in sequence and then is connected to the second end of the crank 500. The door closer can be effectively hidden, thereby improving the display effect of the storage equipment. The door body 100's own gravity can also be used to reduce the shaking and impact of the door body 100 when closing, thereby improving the movement stability of the door body 100.

[0065] In some embodiments, Figures 3 - 6 As shown, the damper 400 includes a sleeve 410, a movable member 420 and an elastic member 430. The sleeve 410 is hinged to the hinge seat 300; one end of the movable member 420 is hinged to the first end of the crank 500, and the other end is slidably disposed on the sleeve 410 along the axial direction of the sleeve 410; the elastic member 430 is disposed between the sleeve 410 and the movable member 420. The elastic member 430 includes but is not limited to a spring. The cross section of the sleeve 410 includes but is not limited to a circular ring.

[0066] It is understandable that the second end of the crank 500, i.e., the main body 510, is connected to the hinge shaft 200, the first end of the crank 500, i.e., the transmission shaft 520, is hinged to one end of the movable member 420, and the movable member 420 and the sleeve 410 are slidably matched, thereby converting the rotation of the door body 100 into the linear movement of the movable member 420 along the axial direction of the sleeve 410, and utilizing the deformation force of the elastic member 430 to absorb the impact force when the door body 100 is closed, thereby improving the closing accuracy and reliability of the door body 100. Of course, in other embodiments, a liquid damper 400 or a gas damper 400, etc., may also be used, and this embodiment does not specifically limit this.

[0067] In some embodiments, as Figure 1 , Figures 3 - 6 shown, one end of the sleeve 410 is connected with a mounting member 610. A connecting shaft sleeve 620 protrudes from the side of the hinge seat 300 away from the door body 100. A connecting shaft 630 passes through the connecting shaft sleeve 620, and the mounting member 610 is rotatably sleeved outside the connecting shaft 630. The connection manner between the mounting member 610 and the sleeve 410 includes but is not limited to threaded connection, welding or plugging, etc.

[0068] It can be understood that the axial direction of the connecting shaft 630 is parallel to the axial direction of the hinge shaft 200, and one end of the sleeve 410 is hinged to the hinge seat 300 through the mounting member 610. Of course, in other embodiments, the connecting shaft 630 and the connecting shaft sleeve 620 can also be an integrally formed structure, and this embodiment does not make specific limitations on this, as long as the mounting member 610 can only rotate relative to the connecting shaft 630.

[0069] In some embodiments, as Figure 4 shown, the elastic member 430 is always in a deformed state, and the damper 400 has a first state; wherein,

[0070] In the first state, the axial direction of the sleeve 410 forms an included angle with the connection line between the second end of the crank 500 and the first end of the crank 500, and the first end of the crank 500 is located on the side of the second end of the crank 500 close to the box body.

[0071] It should be noted that the elastic member 430 can be always in a compressed state or always in an extended state, and this embodiment does not make specific limitations on this. Exemplarily, in this embodiment, the elastic member 430 is always in a compressed state; its pre-compression amount is 10 mm, that is, when the door body 100 is closed, the elastic member 430 has been compressed by 10 mm from its natural length.

[0072] It should be noted that the "connection line between the second end of the crank 500 and the first end of the crank 500" refers to the perpendicular distance between the center of the mounting hole and the center line of the transmission shaft 520.

[0073] It can be understood that when the current rotation angle of the door body 100 is less than the first preset angle, the damper 400 is in the first state. Since the elastic member 430 is in a deformed state, and the deformation direction of the elastic member 430 is parallel to the axial direction of the sleeve 410, and the axial direction of the sleeve 410 is arranged at an angle with the connection line between the second end of the crank 500 and the first end of the crank 500; based on the decomposition of forces, it can be known that the reaction force generated by the deformation of the elastic member 430 can always generate a force on the first end of the crank 500 to approach the box body and a force away from the hinged part of the sleeve 410 and the hinge seat 300, that is, the elastic member 430 can always generate a force to assist in closing the door. That is, under the action of the resilience of the elastic member 430, the first end of the crank 500 is driven to rotate around the second end of the crank 500 in the direction close to the box body, thereby driving the door body 100 to approach the box body, realizing automatic closing of the door, improving the smoothness of the hand feeling during the movement of the closed door body 100, reducing the possibility of gaps between the closed door body 100 and the box body, and improving the sealing performance of the storage device.

[0074] It should be noted that the first preset angle can be designed according to actual needs, and this embodiment does not make specific limitations on this. Exemplarily, the first preset angle is 90°.

[0075] In some embodiments, as Figure 4 shown, the box body forms a compartment with an opening. When the door body 100 is in the closed state, the damper 400 is in the first state, and the connection line between the second end of the crank 500 and the first end of the crank 500 is parallel to the orientation of the compartment, which can reduce the lateral force and shaking during the closing process of the door body 100, and make full use of the resilience of the elastic member 430, so that the force arm generated for closing the door at this time is the largest, strengthening the closing performance, avoiding the accumulation of water vapor, dirt, etc., and ensuring the use performance of the storage device.

[0076] Exemplarily, the opening of the compartment formed by the box body faces forward, and the connection line between the second end of the crank 500 and the first end of the crank 500 is parallel to the front-rear direction.

[0077] In some embodiments, as Figure 6 shown, the damper 400 further has a second state; wherein,

[0078] In the second state, the axial direction of the sleeve 410 is arranged at an angle with the connection line between the second end of the crank 500 and the first end of the crank 500, and the first end of the crank 500 is located on the side of the second end of the crank 500 away from the box body.

[0079] It can be understood that when the current rotation angle of the door body 100 is greater than the first preset angle, the damper 400 is in the second state. Since the elastic member 430 is in a deformed state, and the deformation direction of the elastic member 430 is parallel to the axial direction of the sleeve 410, and the axis of the sleeve 410 is arranged at an angle with the connection line between the second end of the crank 500 and the first end of the crank 500; based on the decomposition of forces, it can be known that the reaction force generated by the deformation of the elastic member 430 can always generate a force on the first end of the crank 500 away from the box body and a force away from the hinge joint of the sleeve 410 and the hinge seat 300, that is, the elastic member 430 can always generate a door-opening assisting force. That is, under the action of the resilience of the elastic member 430, the first end of the crank 500 is driven to rotate away from the box body with the second end of the crank 500 as the center, thereby driving the door body 100 away from the box body, realizing the hovering of the door body 100, which is convenient for operation and has high use stability.

[0080] In some embodiments, as Figure 5 shown, the damper 400 further has a third state that is free between the first state and the second state; wherein,

[0081] In the third state, the axial direction of the sleeve 410 is parallel to the connection line between the second end of the crank 500 and the first end of the crank 500.

[0082] It can be understood that when the current rotation angle of the door body 100 is equal to the first preset angle, the damper 400 is in the third state. Since the elastic member 430 is in a deformed state, and the deformation direction of the elastic member 430 is parallel to the axial direction of the sleeve 410, and the axis of the sleeve 410 is parallel to the connection line between the second end of the crank 500 and the first end of the crank 500, so that the reaction force generated by the deformation of the elastic member 430 is completely converted into a force in the direction away from the hinge joint of the sleeve 410 and the hinge seat 300, and no torque for driving the door body 100 to rotate can be generated, so that the door body 100 can be maintained at the current angle (i.e., static self-locking) without external force, realizing the hovering of the door body 100, which is convenient for operation and has high use stability.

[0083] In some embodiments, as Figure 5 shown, the axial direction of the sleeve 410 coincides with the connection line between the second end of the crank 500 and the first end of the crank 500.

[0084] In some embodiments, as Figure 5 shown, in the third state, the deformation amount of the elastic member 430 is the largest. Since the resilience of the elastic member 430 is completely converted into a force in the direction away from the hinge joint of the sleeve 410 and the hinge seat 300 at this time, the elastic member 430 needs to be further deformed to offset the gravity and external torque of the door body 100 and maintain the balance of the door body 100.

[0085] In some embodiments, such as Figure 3 and Figure 4 shown, the movable member 420 includes a transmission rod 421 and a piston head 422. One end of the transmission rod 421 is hinged to the first end of the crank 500, and the other end slides into the sleeve 410; the piston head 422 is sleeved outside the transmission rod 421 and connected to the elastic member 430, and at least part of the outer side wall of the piston head 422 is slidably engaged with the inner side wall of the sleeve 410.

[0086] It can be understood that by connecting the piston head 422 to the end of the elastic member 430 away from the mounting member 610, and the piston head 422 is always slidably engaged with the inner side wall of the sleeve 410, the possibility of the piston head 422 coming out of the sleeve 410 when the rotation speed of the door body 100 is too fast or the rotation range is large is reduced, ensuring the reliability of the movement of the damper 400. At the same time, the elastic member 430 is located inside the sleeve 410 and sleeved outside the transmission rod 421, which can also guide the deformation direction of the elastic member 430, improving the reliability and service life of the entire door assembly.

[0087] In some embodiments, such as Figure 1 shown, the hinge shaft 200 forms a through hole 201, and the through hole 201 axially penetrates the hinge shaft 200 along the axis of the hinge shaft 200, and the through hole 201 is used to accommodate part of the wire harness 900. It should be noted that the shape and size of the through hole 201 can be designed according to actual needs, and this embodiment does not make specific limitations on this.

[0088] It can be understood that one end of the wire harness 900 passes through the through hole 201 and extends into the door frame of the door body 100, so that the wire harness 900 can maintain a stable connection during the rotation of the door body 100, and at the same time reduce the friction and wear between the wire harness 900 and the hinge shaft 200. In addition, compared with the case where the door closer is arranged in the door frame, the length of the hinge shaft 200 and the complexity of processing can be reduced. Exemplarily, the length of the hinge shaft 200 is 70 mm.

[0089] In some embodiments, such as Figures 1 - 6 shown, the door assembly further includes a first limiting member 700, and the first limiting member 700 is connected to at least one of the door body 100 and the hinge shaft 200, and is adapted to be in abutting cooperation with the hinge seat 300 to limit the rotation range of the door body 100 relative to the box body. It should be noted that the shapes and sizes of the first limiting member 700 and the hinge seat 300 can be designed according to actual needs, and this embodiment does not make specific limitations on this.

[0090] It can be understood that, as Figures 1 - 5 shown, when the current rotation angle of the door body 100 is less than the second preset angle, the first limiting member 700 is disengaged from the hinge seat 300; as Figure 6As shown, when the current rotation angle of the door body 100 is equal to the second preset angle, the first limiting member 700 is in abutting cooperation with the hinge seat 300, thereby limiting the possibility of the door body 100 continuing to rotate relative to the box body, reducing the excessive opening of the door body 100, reducing mechanical stress and potential safety hazards, and improving the reliability of the entire door assembly.

[0091] It should be noted that the second preset angle can be designed according to actual needs, and this embodiment does not make specific limitations thereto. Exemplarily, the second preset angle is 110°.

[0092] In some embodiments, as Figures 1 - 6 shown, the first limiting member 700 is sleeved outside the hinge shaft 200 and connected to the door body 100 to ensure synchronous rotation with the door body 100. Of course, in other embodiments, it is also possible that only the first limiting member 700 is connected to the door body 100, or only connected to the hinge shaft 200, and this embodiment does not make specific limitations thereto.

[0093] In some embodiments, as Figure 6 shown, when the first limiting member 700 is in abutting cooperation with the hinge seat 300, the abutting position of the first limiting member 700 and the hinge seat 300 is located on the side of the crank 500 away from the damper 400, so as to play a role in restricting the continuous rotation of the door body 100.

[0094] In some embodiments, as Figure 3 shown, along the axial direction of the hinge shaft 200, the door body 100, the first limiting member 700, the hinge seat 300 and the crank 500 are arranged in sequence, which can effectively realize the movement control and limiting function of the door body 100 as much as possible, while making the entire door assembly more compact, reducing space occupation, and improving space utilization efficiency.

[0095] In some embodiments, as Figure 3 shown, the door assembly further includes a second limiting member, which is arranged between the hinge shaft 200 and the crank 500 and is used for limiting the axial direction between the hinge shaft 200 and the crank 500 along the hinge shaft 200. The second limiting member includes but is not limited to a set screw.

[0096] It can be understood that, as Figure 3 shown, a positioning hole 501 is formed in the main body 510 of the crank 500, and one end of the second limiting member passes through the positioning hole 501 and is in abutting cooperation with the outer side wall of the hinge shaft 200, ensuring synchronous rotation of the second end of the crank 500 and the hinge shaft 200, and reducing the possibility of the crank 500 disengaging from the hinge shaft 200.

[0097] An embodiment of the present application further provides a storage device. The storage device includes a box body and the above-mentioned door assembly, and the box body forms a compartment; the door body 100 of the door assembly is pivotally mounted on the box body for closing the compartment. It should be noted that the shape and size of the compartment can be designed according to actual needs, and the present embodiment does not make specific limitations on this.

[0098] It should be noted that the storage device in the embodiment can be understood as a general refrigerated storage device, including but not limited to refrigerators, freezers, display cabinets, beverage cabinets, wine cabinets, fresh food cabinets, and refrigerated vending machines, etc. The storage device has various structural forms and a wide range of applications. In this embodiment, a vertical commercial freezer is taken as an example for description, that is, the opening of the compartment faces forward.

[0099] According to the storage device provided by the embodiment of the present application, the display area of the door body 100 is enlarged, and the occupied space inside the door body 100 is reduced, thereby improving the internal space utilization rate of the door assembly and the storage device, and improving the reliability and service life of the storage device.

[0100] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0101] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0102] In the description of the present application, the "first feature", "second feature" may include one or more of such features.

[0103] In the description of the present application, the meaning of "a plurality" is two or more.

[0104] In the description of the present application, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween.

[0105] In the description of the present application, the first feature being "above", "over" or "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0106] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0107] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A door assembly, characterized in that: Applied to storage equipment, the door assembly comprises: Door body; A hinge seat, used for being installed outside the box of the storage device; A hinge shaft, one end of which passes through the hinge seat and extends into the door body, so that the door body can be installed on the box body in an openable and closable manner; A damper and a crank, one end of the damper is hinged to the hinge seat, the other end of the damper is hinged to the first end of the crank, and the second end of the crank is connected to the part of the hinge shaft located outside the door body.

2. The door assembly according to claim 1, characterized in that The damper comprises: A sleeve, hinged to the hinge seat; A movable member, one end of which is hinged to the first end of the crank, and the other end of which is slidably disposed on the sleeve along the axial direction of the sleeve; The elastic member is arranged between the sleeve and the movable member.

3. The door assembly according to claim 2, characterized in that The elastic member is always in a deformed state, and the damper has a first state; wherein, In the first state, the axial direction of the sleeve is set at an angle to the line between the second end of the crank and the first end of the crank, and the first end of the crank is located on the side of the second end of the crank close to the box.

4. The door assembly according to claim 3, characterized in that The box body forms a compartment with an opening, and when the door body is in a closed state, the damper is in a first state, and a line between the second end of the crank and the first end of the crank is parallel to the direction of the compartment.

5. The door assembly according to claim 3, characterized in that The damper also has a second state; wherein, In the second state, the axial direction of the sleeve is arranged at an angle to a line between the second end of the crank and the first end of the crank, and the first end of the crank is located on a side of the second end of the crank away from the housing.

6. The door assembly according to claim 5, characterized in that The damper also has a third state between the first state and the second state; wherein, In the third state, the axial direction of the sleeve is parallel to a line between the second end of the crank and the first end of the crank.

7. The door assembly according to claim 6, characterized in that In the third state, the deformation amount of the elastic member is maximum.

8. The door assembly according to any one of claims 1 to 7, characterized in that: The rotation axis of the damper relative to the hinge seat, the rotation axis of the damper relative to the first end of the crank and the axial direction of the hinge shaft are all parallel; and / or The damper and the crank are arranged close to the bottom surface of the door body; and / or The hinge shaft forms a through hole that penetrates the hinge shaft in an axial direction of the hinge shaft, and the through hole is used to accommodate a wire harness portion.

9. The door assembly according to any one of claims 1 to 7, characterized in that: Also includes: A first limiting member connected to at least one of the door body and the hinge shaft, and adapted to abut against and cooperate with the hinge seat to limit the rotation range of the door body relative to the box body; and / or The second limiting member is disposed between the hinge shaft and the crank, and is used for limiting the position between the hinge shaft and the crank along the axial direction of the hinge shaft.

10. A storage device, characterized in that: include: Box, forming a compartment; as well as The door assembly according to any one of claims 1 to 9, wherein the door body of the door assembly is openably mounted on the box body to close the compartment.

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