Hollow freezer door with automatic return device
By installing a self-returning component at the bottom of the freezer door, the door's gravity is used to achieve automatic closing, solving the problem of the door closer being easily damaged, reducing maintenance costs and extending the service life of the freezer.
Patent Information
- Application Number
- CN202423059693.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The door closer of existing freezers is easily damaged by impact, causing the door to not close properly, increasing maintenance costs and reducing the service life of the freezer.
An autoregressive component is installed at the lower end of the cabinet door, and the cabinet door's own gravity is used to achieve automatic closing, avoiding the use of an external door closer. The automatic closing of the cabinet door is achieved through the concave and convex arc design of the autoregressive upper component and the autoregressive lower component.
It avoids the impact damage of the door closer, reduces the maintenance cost and increases the service life of the freezer.
Smart Images
Figure CN223484648U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a cabinet door, and more particularly to a hollow freezer door with an automatic return device. Background Technology
[0002] To achieve the automatic closing function of the freezer door, existing freezers typically install a door closer between the door and the upper outer part of the freezer body.
[0003] However, since the door closer is exposed on the outside of the cabinet door and cabinet body, it is easy to be impacted during the turnover of the freezer, which can damage the door closer and prevent the cabinet door from closing properly.
[0004] More importantly, since the door closer is directly connected to the cabinet door and cabinet body, when the door closer is impacted, it can easily cause damage to the cabinet door and cabinet body, increasing maintenance costs and reducing the overall lifespan of the freezer. Utility Model Content
[0005] This utility model addresses the above-mentioned technical problems by providing a hollow freezer door with an automatic return device. This hollow freezer door with an automatic return device uses a self-returning component installed at the lower end of the door, located at the lower rotating connector. Under the action of the door's own weight, the door automatically closes. Furthermore, since the self-returning component is located on the inside of the door, it avoids the problem of external door closers being easily damaged during freezer turnover, thus reducing maintenance costs and increasing the overall service life of the freezer.
[0006] Therefore, the technical solution of this utility model is a hollow freezer door with an automatic return device, including a door frame, a panel, a self-returning component, and a sealing frame strip;
[0007] The door frame is composed of multiple door frame bodies that are fixedly surrounded by each other. The front end of the door frame is fixedly connected to the panel, and the rear end of the door frame is fixedly connected to the sealing strip.
[0008] The upper and lower ends of one side of the door frame are respectively provided with an upper rotating connector and a lower rotating connector. One end of the upper rotating connector is rotatably connected to the upper end of the corresponding door frame, and the self-returning component is located between the lower rotating connector and the lower end of the corresponding door frame.
[0009] The self-regression component includes an upper self-regression component and a lower self-regression component. The lower end of the upper self-regression component and the upper end of the lower self-regression component are in contact with each other. The lower end of the upper self-regression component and the upper end of the lower self-regression component are respectively provided with symmetrical concave and convex arc surfaces. Under the action of gravity, the upper self-regression component and the lower self-regression component can achieve relative sliding rotation.
[0010] The upper end of the self-regressing upper component is fixedly connected to the lower end of the corresponding door frame, and the lower end of the self-regressing lower component is fixedly connected to one end of the lower rotating connector.
[0011] Preferably, the self-regression upper component is provided with a self-regression upper component rotational regression section, a self-regression upper component fixed connection section, and a self-regression upper component rotational positioning section. The self-regression upper component rotational regression section is located on the right side of the self-regression upper component, the self-regression upper component fixed connection section is located on the left side of the self-regression upper component, and the self-regression upper component rotational positioning section is located at the upper end of the self-regression upper component rotational regression section.
[0012] The self-regressing upper component rotational positioning section has a longitudinally arranged first rotational positioning hole in the middle, and the lower end of the first rotational positioning hole extends to the lower end of the self-regressing upper component rotational regression section.
[0013] The lower end of the self-regression upper component rotational regression section is provided with a first concave arc surface and a first convex arc surface. The first concave arc surface is located on the left and right sides of the lower end of the self-regression upper component rotational regression section, and the first convex arc surface is located on the front and rear sides of the lower end of the self-regression upper component rotational regression section. The adjacent first concave arc surface and first convex arc surface are smoothly transitioned along the circumferential direction.
[0014] The self-regression lower component is provided with a self-regression lower component rotation support section, a self-regression lower component fixed connection section, and a self-regression lower component rotation positioning section. The self-regression lower component rotation support section is located on the left side of the self-regression lower component, the self-regression lower component fixed connection section is located on the right side of the self-regression lower component, and the self-regression lower component rotation positioning section is located at the upper end of the self-regression lower component rotation support section.
[0015] The upper end of the self-regressing lower component rotating support section is provided with a second concave arc surface and a second convex arc surface. The second concave arc surface is located on the left and right sides of the upper end of the self-regressing lower component rotating support section, and the second convex arc surface is located on the front and rear sides of the upper end of the self-regressing lower component rotating support section. The adjacent second concave arc surface and second convex arc surface are smoothly transitioned along the circumferential direction.
[0016] The self-regressing lower component rotation positioning segment can be inserted into the first rotation positioning hole on the self-regressing upper component rotation positioning segment. The outer circumference of the self-regressing lower component rotation positioning segment and the inner circumference of the first rotation positioning hole fit together and can rotate relative to each other.
[0017] Preferably, a second rotation positioning hole is provided in the middle of the self-regressing lower component rotation positioning section, and the lower end of the second rotation positioning hole extends to the lower end of the self-regressing lower component rotation regression section.
[0018] Preferably, the first rotary positioning hole is a through hole arranged longitudinally;
[0019] The second rotary positioning hole is a through hole set longitudinally.
[0020] Preferably, the self-returning upper component fixing connection section is provided with a self-returning upper component fixing hole that runs vertically through the upper and lower parts, and the self-returning upper component fixing connection section is locked and fixed to the lower end of the corresponding door frame by screws;
[0021] The self-regressing lower component fixed connection section is provided with a through hole for fixing the self-regressing lower component. The self-regressing lower component fixed connection section is locked and fixed to one end of the lower rotating connector by screws.
[0022] Preferably, the panel is a transparent insulated glass.
[0023] The beneficial effect of this utility model is that by installing a self-returning component between the lower rotating connector and the lower end of the corresponding door frame, the self-returning component includes a self-returning upper component and a self-returning lower component. Since the first concave arc surface and the first convex arc surface on the rotating return section of the self-returning upper component are respectively located at the left and right positions and the front and back positions on the lower end of the rotating return section of the self-returning upper component, the second concave arc surface and the second convex arc surface on the rotating support section of the self-returning lower component are also respectively located at the left and right positions and the front and back positions on the upper end of the rotating support section of the self-returning lower component.
[0024] Therefore, when the self-regressing lower component is installed relative to the self-regressing upper component by rotation, the first concave arc surface and the first convex arc surface on the rotational regression section of the self-regressing upper component will complement each other with the second concave arc surface and the second convex arc surface on the rotational support section of the self-regressing lower component.
[0025] When the operator opens the cabinet door, the door causes the self-returning upper component to rotate synchronously. The self-returning upper component rotates relative to the self-returning lower component. At this time, because the self-returning lower component and the self-returning upper component are installed in a rotational fit, the connection between the first concave arc surface and the first convex arc surface and the second concave arc surface and the second convex arc surface is mutually fitted. This allows the self-returning upper component to rotate in an "uphill" manner on the rotational support section of the self-returning lower component. When the operator releases the cabinet door, under the action of the cabinet door's own gravity, the self-returning upper component rotates in a "downhill" manner on the rotational support section of the self-returning lower component. The cabinet door causes the self-returning upper component to rotate in the closing direction, and the cabinet door closes. When the cabinet door is closed, the self-returning lower component and the self-returning upper component restore their relative fit connection, ultimately realizing the automatic closing function of the cabinet door.
[0026] By using this self-returning component on the cabinet door, the problem of easily impacting the door closer during the turnover of the freezer can be avoided by using an external door closer, thus reducing maintenance costs and increasing the overall service life of the freezer. Attached Figure Description
[0027] Figure 1 This is a perspective view of the main view of this utility model;
[0028] Figure 2 This is a rear-view perspective view of the present invention;
[0029] Figure 3 This is a plan view of the door frame structure in this utility model;
[0030] Figure 4 This is a three-dimensional view of the self-regressing component in this utility model;
[0031] Figure 5 This is a three-dimensional view of the self-returning rotating seat in this utility model;
[0032] Figure 6 This is a three-dimensional view of the self-returning support base in this utility model;
[0033] Figure 7 This utility model Figure 1 Enlarged view of point A in the middle;
[0034] Figure 8 This is a perspective view of the sealing frame strip in this utility model;
[0035] Figure 9 This utility model Figure 8 Enlarged view at point B in the middle;
[0036] Figure 10 This is a three-dimensional view of the application of this utility model to a double-door structure.
[0037] Explanation of symbols in the diagram:
[0038] 1. Door frame; 101. Door frame body; 102. Door frame groove; 2. Panel; 3. Upper rotating connector; 4. Lower rotating connector; 5. Self-returning assembly; 501. Upper self-returning assembly; 50101. Rotating return section of upper self-returning assembly; 50102. Fixed connection section of upper self-returning assembly; 50103. Rotating positioning section of upper self-returning assembly; 50104. Fixed hole of upper self-returning assembly; 50105. First rotating positioning hole; 50106. First concave arc surface; 50107. First convex arc surface; 502. Lower self-returning assembly; 502 01. Rotary support section of self-regressing lower component; 50202. Fixed connection section of self-regressing lower component; 50203. Rotary positioning section of self-regressing lower component; 50204. Fixed hole of self-regressing lower component; 50205. Second rotary positioning hole; 50206. Second concave arc surface; 50207. Second convex arc surface; 6. Sealing frame strip; 601. First fixing section of sealing frame strip; 602. Connecting section of sealing frame strip; 603. Second fixing section of sealing frame strip; 604. Compression section of sealing frame strip; 605. Contact sealing section of sealing frame strip; 606. Fixing groove of sealing frame strip. Detailed Implementation
[0039] The present invention will be further described below with reference to the embodiments.
[0040] pass Figures 1-10 It can be seen that the hollow freezer door with automatic return device includes a door frame 1, a panel 2, a self-returning component 5, and a sealing strip 6.
[0041] The door frame 1 is composed of multiple door frame bodies 101 that are fixedly surrounded by each other. The front end of the door frame 1 is fixedly connected to the panel 2, and the rear end of the door frame 1 is fixedly connected to the sealing strip 6.
[0042] Panel 2 can be made of transparent or opaque materials depending on actual usage needs, and different materials, structures and colors can be selected, such as frosted materials, plastic materials, etc. When panel 2 is transparent hollow glass, it is convenient for operators to see the status of the items inside the cabinet.
[0043] The upper and lower ends of one side of the door frame 1 are respectively provided with an upper rotating connector 3 and a lower rotating connector 4. One end of the upper rotating connector 3 is rotatably connected to the upper end of the corresponding door frame 1, and the other end of the upper rotating connector 3 can be fixedly connected to the corresponding position on the upper end of the cabinet. The self-returning component 5 is located between the lower rotating connector 4 and the lower end of the corresponding door frame 1.
[0044] The door frame 1 can be rotated and opened / closed via the upper rotating connector 3 and the lower rotating connector 4.
[0045] The self-returning component 5 includes a self-returning upper component 501 and a self-returning lower component 502. The lower end of the self-returning upper component 501 and the upper end of the self-returning lower component 502 are attached to each other. The lower end of the self-returning upper component 501 and the upper end of the self-returning lower component 502 are respectively provided with symmetrical concave and convex arc surfaces. Under the action of gravity, the self-returning upper component 501 and the self-returning lower component 502 can achieve relative sliding rotation. In use, when the door frame 1 is opened and the operator releases his hand, the self-returning upper component 501 is automatically slid and rotated on the self-returning lower component 502 in the closing direction under the action of the gravity of the door frame 1, thereby realizing the automatic closing of the door frame 1.
[0046] The upper end of the self-returning upper component 501 is fixedly connected to the lower end of the corresponding door frame 1, the lower end of the self-returning lower component 502 is fixedly connected to one end of the lower rotating connector 4, and the other end of the lower rotating connector 4 can be fixedly connected to the corresponding position at the lower end of the cabinet.
[0047] The self-regression upper component 501 is provided with a self-regression upper component rotational regression section 50101, a self-regression upper component fixed connection section 50102, and a self-regression upper component rotational positioning section 50103. The self-regression upper component rotational regression section 50101 is located on the right side of the self-regression upper component 501, the self-regression upper component fixed connection section 50102 is located on the left side of the self-regression upper component 501, and the self-regression upper component rotational positioning section 50103 is located at the upper end of the self-regression upper component rotational regression section 50101.
[0048] The self-regressing upper component rotation positioning section 50103 has a longitudinally arranged first rotation positioning hole 50105 in the middle, and the lower end of the first rotation positioning hole 50105 extends to the lower end of the self-regressing upper component rotation regression section 50101.
[0049] The lower end of the self-regressing upper component rotational regression section 50101 is provided with a first concave arc surface 50106 and a first convex arc surface 50107. The first concave arc surface 50106 is located on the left and right sides of the lower end of the self-regressing upper component rotational regression section 50101, and the first convex arc surface 50107 is located on the front and rear sides of the lower end of the self-regressing upper component rotational regression section 50101. The adjacent first concave arc surface 50106 and first convex arc surface 50107 are smoothly transitioned along the circumferential direction.
[0050] The self-regressing lower component 502 is provided with a self-regressing lower component rotation support section 50201, a self-regressing lower component fixed connection section 50202, and a self-regressing lower component rotation positioning section 50203. The self-regressing lower component rotation support section 50201 is located on the left side of the self-regressing lower component 502, the self-regressing lower component fixed connection section 50202 is located on the right side of the self-regressing lower component 502, and the self-regressing lower component rotation positioning section 50203 is located at the upper end of the self-regressing lower component rotation support section 50201.
[0051] The upper end of the self-regressing lower component rotation support section 50201 is provided with a second concave arc surface 50206 and a second convex arc surface 50207. The second concave arc surface 50206 is located on the left and right sides of the upper end of the self-regressing lower component rotation support section 50201, and the second convex arc surface 50207 is located on the front and rear sides of the upper end of the self-regressing lower component rotation support section 50201, respectively. The adjacent second concave arc surface 50206 and second convex arc surface 50207 are smoothly transitioned along the circumferential direction.
[0052] The self-regressing lower component rotation positioning segment 50203 can be inserted into the first rotation positioning hole 50105 on the self-regressing upper component rotation positioning segment 50103. The outer circumference of the self-regressing lower component rotation positioning segment 50203 and the inner circumference of the first rotation positioning hole 50105 are in contact with each other, enabling mutual rotation.
[0053] During installation, firstly, the inner end of the upper rotating connector 3 is rotated and fixedly connected to the upper end of the corresponding door frame 1. The self-returning upper component fixed connection section 50102 on the self-returning upper component 501 is fixedly connected to the lower end of the corresponding side of the door frame 1. At the same time, the self-returning upper component rotating positioning section 50103 is inserted into the corresponding fixing hole at the lower end of the door frame 1 to achieve locking and positioning between the self-returning upper component 501 and the lower end of the door frame 1. Then, the self-returning lower component rotating positioning section 50203 on the self-returning lower component 502 is inserted into the first rotating positioning hole 50105 on the self-returning upper component rotating positioning section 50103. At this time, the self-returning lower component 502 is rotated 90 degrees relative to the self-returning upper component 501 and fitted for installation.
[0054] Since the first concave arc surface 50106 and the first convex arc surface 50107 on the self-regressing upper component rotational regression segment 50101 are located at the left-right and front-back positions respectively on the lower end of the self-regressing upper component rotational regression segment 50101, and the second concave arc surface 50206 and the second convex arc surface 50207 on the self-regressing lower component rotational support segment 50201 are also located at the left-right and front-back positions respectively on the upper end of the self-regressing lower component rotational support segment 50201, therefore, when the self-regressing lower component 502 is relative to the self-regressing upper component... After component 501 is rotated 90 degrees and installed, the first concave arc surface 50106 and the first convex arc surface 50107 on the self-returning upper component rotational return section 50101 will mutually support each other with the second concave arc surface 50206 and the second convex arc surface 50207 on the self-returning lower component rotational support section 50201. Then, the self-returning lower component fixed connection section 50202 is fixedly connected to the inner end of the lower rotating connector 4. Finally, the outer ends of the upper rotating connector 3 and the lower rotating connector 4 are respectively connected to the cabinet. The upper and lower ends are fixedly connected at corresponding positions. During use, when the operator opens the cabinet door, the door causes the self-returning upper component 501 to rotate synchronously. The self-returning upper component 501 rotates relative to the self-returning lower component 502. At this time, because the self-returning lower component 502 and the self-returning upper component 501 are installed in a 90-degree rotational fit, the mutual fitting connection between the first concave arc surface 50106 and the first convex arc surface 50107 and the second concave arc surface 50206 and the second convex arc surface 50207 makes the self-returning upper component... The self-returning component rotation section 50101 rotates in an "uphill" manner on the self-returning lower component rotation support section 50201. At this time, when the operator releases the cabinet door, under the action of the cabinet door's own gravity, the self-returning upper component rotation section 50101 rotates in a "downhill" manner on the self-returning lower component rotation support section 50201. The cabinet door drives the self-returning upper component 501 to rotate in the closing direction. Finally, the cabinet door closes. When the cabinet door closes, the self-returning lower component 502 and the self-returning upper component 501 return to a relative 90-degree fit connection.
[0055] The self-returning lower component rotation positioning section 50203 has a longitudinally arranged second rotation positioning hole 50205 in the middle. The lower end of the second rotation positioning hole 50205 extends to the lower end of the self-returning lower component rotation return section 50201. It can be easily applied to double-door cabinet doors. Simply insert the pin on the hinge at the upper end of the lower cabinet door into the second rotation positioning hole 50205. The lower end of the lower cabinet door can also adopt the corresponding structure in this patent to complete the installation, thereby achieving the automatic closing effect of the lower cabinet door.
[0056] The first rotary positioning hole 50105 is a through hole arranged vertically. The through hole design makes it easier for the self-returning lower component rotary positioning segment 50203 to be inserted into the first rotary positioning hole 50105. If the top of the first rotary positioning hole 50105 is a closed structure, the self-returning lower component rotary positioning segment 50203 will be subject to air resistance from inside the first rotary positioning hole 50105 during the insertion process, which will make the installation process time-consuming and laborious.
[0057] The second rotary positioning hole 50205 is a through hole arranged longitudinally. This through hole design has the same function as the one mentioned above, which is also for the purpose of facilitating insertion.
[0058] The self-returning upper component fixing connection section 50102 is provided with a through-hole 50104 for the self-returning upper component. The self-returning upper component fixing connection section 50102 is fixed to the lower end of the corresponding door frame 1 by screws. The self-returning lower component fixing connection section 50202 is provided with a through-hole 50204 for the self-returning lower component. The self-returning lower component fixing connection section 50202 is fixed to one end of the lower rotating connector 4 by screws. This enables quick assembly and disassembly of the self-returning upper component 501 and the self-returning lower component 502, facilitating initial installation and subsequent maintenance and replacement.
[0059] A door frame groove 102 is provided on the inner end of the door frame body 101. The sealing frame strip 6 is provided with a first fixing section 601, a connecting section 602, a second fixing section 603, a compression section 604, and a contact sealing section 605 in sequence from front to back. The widths of the first fixing section 601 and the second fixing section 603 are both greater than the width of the connecting section 602. The upper and lower positions of the first fixing section 601 and the second fixing section 603 are respectively provided with sealing frame fixing grooves 606 between them and the upper and lower ends of the adjacent connecting section 602.
[0060] The first fixing section 601 of the sealing frame strip 6 can be inserted into the door frame groove 102 to achieve a fixed connection between the sealing frame strip 6 and the door frame 1. The first fixing section 601 of the sealing frame strip is conical in shape. The conical structure of the first fixing section 601 of the sealing frame strip can guide the operator during the process of inserting the first fixing section 601 of the sealing frame strip into the door frame groove 102, making it easier for the operator to insert the first fixing section 601 of the sealing frame strip into the door frame groove 102, further reducing the installation intensity and increasing work efficiency.
[0061] This autoregressive component can be applied to different cabinet doors, such as double doors, top and bottom doors, and multi-door cabinets, with a wide range of applications.
[0062] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A hollow freezer door with an automatic return device, characterized in that: This includes door frames, panels, self-returning components, and sealing strips; The door frame is composed of multiple door frame bodies that are fixedly surrounded by each other. The front end of the door frame is fixedly connected to the panel, and the rear end of the door frame is fixedly connected to the sealing strip. The upper and lower ends of one side of the door frame are respectively provided with an upper rotating connector and a lower rotating connector. One end of the upper rotating connector is rotatably connected to the upper end of the corresponding door frame. The self-returning component is located between the lower rotating connector and the lower end of the corresponding door frame. The self-regression component includes a self-regression upper component and a self-regression lower component. The lower end of the self-regression upper component and the upper end of the self-regression lower component are in contact with each other. The lower end of the self-regression upper component and the upper end of the self-regression lower component are respectively provided with mutually symmetrical concave and convex arc surfaces. The self-regression upper component and the self-regression lower component can achieve relative sliding rotation under the action of gravity. The upper end of the self-returning upper component is fixedly connected to the lower end of the corresponding door frame, and the lower end of the self-returning lower component is fixedly connected to one end of the lower rotating connector.
2. The hollow freezer door with automatic return device according to claim 1, characterized in that: The self-regression upper component is provided with a self-regression upper component rotational regression section, a self-regression upper component fixed connection section, and a self-regression upper component rotational positioning section. The self-regression upper component rotational regression section is located on the right side of the self-regression upper component, the self-regression upper component fixed connection section is located on the left side of the self-regression upper component, and the self-regression upper component rotational positioning section is located at the upper end of the self-regression upper component rotational regression section. The self-regressing upper component rotation positioning section has a longitudinally arranged first rotation positioning hole in the middle, and the lower end of the first rotation positioning hole extends to the lower end of the self-regressing upper component rotation regression section. The lower end of the self-regressing upper component rotational regression section is provided with a first concave arc surface and a first convex arc surface. The first concave arc surface is located on the left and right sides of the lower end of the self-regressing upper component rotational regression section, and the first convex arc surface is located on the front and rear sides of the lower end of the self-regressing upper component rotational regression section. The adjacent first concave arc surface and first convex arc surface are smoothly transitioned along the circumferential direction. The self-regressing lower component is provided with a self-regressing lower component rotation support section, a self-regressing lower component fixed connection section, and a self-regressing lower component rotation positioning section. The self-regressing lower component rotation support section is located on the left side of the self-regressing lower component, the self-regressing lower component fixed connection section is located on the right side of the self-regressing lower component, and the self-regressing lower component rotation positioning section is located at the upper end of the self-regressing lower component rotation support section. The upper end of the self-regressing lower component rotation support section is provided with a second concave arc surface and a second convex arc surface. The second concave arc surface is located on the left and right sides of the upper end of the self-regressing lower component rotation support section, and the second convex arc surface is located on the front and rear sides of the upper end of the self-regressing lower component rotation support section. Adjacent second concave arc surfaces and second convex arc surfaces are smoothly transitioned along the circumferential direction. The self-regressing lower component rotation positioning segment can be inserted into the interior of the first rotation positioning hole on the self-regressing upper component rotation positioning segment. The outer circumference of the self-regressing lower component rotation positioning segment and the inner circumference of the first rotation positioning hole are in contact with each other, enabling mutual rotation.
3. The hollow freezer door with automatic return device according to claim 2, characterized in that: The self-regressing lower component rotation positioning section has a longitudinally arranged second rotation positioning hole in the middle, and the lower end of the second rotation positioning hole extends to the lower end of the self-regressing lower component rotation return section.
4. The hollow freezer door with automatic return device according to claim 3, characterized in that: The first rotary positioning hole is a through hole arranged longitudinally; The second rotary positioning hole is a through hole arranged longitudinally.
5. The hollow freezer door with automatic return device according to any one of claims 1-4, characterized in that: The self-returning upper component fixing connection section is provided with a self-returning upper component fixing hole that runs vertically through it, and the self-returning upper component fixing connection section is fixed to the lower end of the corresponding door frame by screws; The self-regressing lower component fixed connection section is provided with a through-hole for fixing the self-regressing lower component, and one end of the self-regressing lower component fixed connection section is locked and fixed to the lower rotating connector by screws.
6. The hollow freezer door with automatic return device according to any one of claims 1-4, characterized in that: The panel is a transparent insulated glass.