Automatic closing door body structure and refrigerator

Abstract

The utility model provides an automatic closing door body structure and freezer, including doorframe subassembly and first door body, the doorframe subassembly is equipped with the damping slide rail that inclines forward and with the support surface that is parallel to the damping slide rail, the front end of damping slide rail is equipped with the damping spring, and the first door body is equipped with the second door body. At least two opposite sides of the first door body are provided with door frames, bottom wheels are arranged at the bottoms of the door frames, the door frames are installed in the damping sliding rails, the bottom wheels slide on the supporting face, and the first door body is automatically closed under the action of gravity in an open state. The door body structure adopts a pure mechanical structure, so that the production cost is low, and the smoothness and the safety of mechanically and automatically closing the door can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of refrigerator door technology, and in particular to an automatic closing door structure and a refrigerator. Background Technology

[0002] Commercial horizontal freezers typically use sliding glass doors, allowing customers to clearly see the products inside. After selecting their items, customers open the sliding door to retrieve them. Currently, the glass doors of freezers are usually manually operated. However, some customers forget to close the glass door promptly after opening it, causing cold air to continuously escape from the freezer, significantly increasing energy consumption.

[0003] To address the aforementioned issues, some horizontal freezers currently employ electric doors. These doors are closed via a motor and pull cord after opening. While this achieves automatic closing, such freezers are typically expensive. Therefore, providing a lower-cost automatic door closing structure is a pressing problem that needs to be solved. Utility Model Content

[0004] To address the problems existing in the prior art, the first objective of this utility model is to provide an automatic closing door structure, comprising:

[0005] A door frame assembly, wherein the door frame assembly is provided with a forward-inclined damping slide rail and a support surface arranged parallel to the damping slide rail, and a damping spring is provided at the front end of the damping slide rail;

[0006] The first door has door frames on at least two opposite sides. The bottom of the door frame is provided with a bottom wheel. The door frame is installed in the damping slide rail. The bottom wheel slides on the support surface. When the first door is open, it automatically closes under the action of gravity. The damping slide rail slows down the closing speed of the first door.

[0007] Specifically, at the stop position of the first door opening, a spring-loaded device is provided on the inner side of the door frame assembly. The spring-loaded device includes a base fixedly installed on the inner side of the door frame assembly, a movable bracket movably connected to the base, and a spring-loaded spring clamped between the base and the movable bracket. The movable bracket can move along the sliding direction of the first door.

[0008] Specifically, both the base and the movable bracket are provided with openings, which are arranged opposite to each other. Wedge-shaped blocks are provided on both sides of the movable bracket, and a limit plate is provided in the opening of the base. The movable bracket is engaged in the base, and the two ends of the rebound spring abut against the inner sides of the base and the movable bracket, respectively.

[0009] Specifically, the damping slide rail includes a slide groove, in which a slider and a damping spring are disposed. The slider can slide along the slide groove, and a limit groove is provided on the slider. The damping spring abuts against the front side of the slider.

[0010] Specifically, a locking block is provided on the outer side of the door frame, and the locking block is set in a limiting groove.

[0011] Specifically, the door frame assembly also includes a second door body, which is located behind the first door body, and a sealing strip is provided at the overlap between the rear end of the first door body and the second door body.

[0012] Specifically, the bottom of the front and rear ends of the door frame is provided with bottom grooves, and the bottom wheels are set in the bottom grooves. When the first door is closed, the two bottom wheels are stationary in an arc-shaped positioning groove in the support surface.

[0013] Specifically, the first door is equipped with a door handle.

[0014] The second objective of this invention is to provide a refrigerator, comprising a cabinet having an internal cavity and a door structure disposed on the top of the cabinet for opening and closing the internal cavity, wherein the door structure uses the aforementioned automatic closing door structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model features damping slide rails on both sides of the first door. The first door closes automatically under gravity. Damping springs ensure the first door closes slowly at its sliding end, preventing fingers from being pinched when closing due to increased sliding speed. This ensures a smooth and stable closing process. A spring-loaded device is installed at the stop position of the first door. When the first door is opened to its maximum position, it presses back against the spring-loaded device, causing the spring to contract and making the automatic closing even smoother. This also prevents the glass door from getting stuck or failing to return to its original position. The door structure is purely mechanical, resulting in low production costs and ensuring the smoothness and safety of the automatic closing mechanism. Attached Figure Description

[0017] Figure 1 This is an assembly drawing of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the assembly of the first door body and the damping slide rail of this utility model;

[0020] Figure 4 This is a cross-sectional view of the present invention;

[0021] Figure 5 This is a schematic diagram of the damping slide rail structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the rebound device of this utility model.

[0023] Reference numerals: 1. Door frame assembly; 11. Outer shell; 12. Inner shell; 121. Support surface; 122. Positioning groove; 2. First door body; 21. Door frame; 211. Bottom groove; 212. Locking block; 213. Bottom wheel; 22. Sealing strip; 23. Door handle; 3. Second door body; 4. Damping slide rail; 41. Slide groove; 42. Slider; 43. Limiting groove; 44. Damping spring; 5. Rebound device; 51. Base; 511. Limiting plate; 52. Movable bracket; 521. Wedge block; 53. Rebound spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. The specific implementation of the present utility model will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-6 As shown, this utility model provides an automatic closing door structure and a refrigerator including the automatic closing door structure. The refrigerator is a horizontal refrigerator, including a cabinet with an internal cavity and a door located on the top of the cabinet for opening and closing the internal cavity. The door adopts an automatic closing door structure, so that the door automatically closes when open.

[0026] The automatic closing door structure includes a door frame assembly 1 and a first door body 2 installed in the door frame assembly 1. The first door body 2 can slide in the door frame assembly 1. Along the sliding direction of the first door body 2, forward-inclined damping slide rails 4 are provided on both sides of the first door body 2. A damping spring 44 is provided at the end of the damping slide rail 4 near the opening of the first door body 2. The first door body 2 closes automatically under the action of gravity. The damping slide rail 4 slows down the closing speed of the first door body 2, improves the smoothness of the closing of the first door body 2, and prevents the first door body 2 from pinching the hand when closing.

[0027] The door frame assembly 1 includes an outer shell 11 and an inner shell 12. A second door 3 is also provided in the door frame assembly 1, positioned above and behind the first door 2. The second door 3 can be fixedly installed in the door frame assembly 1 or detachably installed therein; it is understood that the second door 3 can also be an integral part of the door frame assembly 1. A forward-inclined damping slide rail 4 is provided in the inner shell 12, embedded between the outer shell 11 and the inner shell 12. The damping slide rail 4 includes a groove 41, in which a slider 42 can slide along the groove 41 is provided. A limit groove 43 is provided on the slider 42. A damping spring 44 is provided at the front end of the damping slide rail 4, abutting against the front side of the slider 42.

[0028] Door frame 21 is fixedly installed on at least two opposite sides of the first door 2. The door frame 21 is installed in the damping slide rail 4. A locking block 212 is provided on the outer side of the door frame 21 and is located in the limiting groove 43. Bottom grooves 211 are respectively provided at the bottom of the front and rear ends of the door frame 21. Bottom wheels 213 are provided in the bottom grooves 211. A support surface 121 is provided in the inner shell 12. The support surface 121 is parallel to the slide rail and is inclined forward. The bottom wheels 213 slide on the support surface 121. When the first door 2 is closed, the two bottom wheels 213 are in the stationary position. An arc-shaped positioning groove 122 is provided in the support surface 121. The positioning groove 122 is used to ensure that when the first door 2 is closed, the two bottom wheels 213 are inserted into the positioning groove 122, so that the first door 2 is closed in place and the first door 2 is always kept closed when not opened to prevent cold air from escaping from the freezer. After the first door 2 is opened, it closes automatically under gravity. A damping spring 44 ensures that the sliding end of the first door 2 closes slowly, preventing it from pinching a hand when closing due to increased sliding speed. This ensures a smooth and stable closing process for the first door 2. Furthermore, damping rails 4 are installed on both sides of the door, ensuring even force distribution and mitigating any offset during the closing process.

[0029] A spring-loaded device 5 is provided at the stop position of the first door 2 when it is opened. The spring-loaded device 5 includes a base 51 fixedly installed inside the inner shell 12, a movable bracket 52 movably connected to the base 51, and a spring-loaded spring 53 clamped between the base 51 and the movable bracket 52. The movable bracket 52 can move along the sliding direction of the first door 2. Openings are provided in both the base 51 and the movable bracket 52, and the two openings are arranged opposite to each other. Wedge blocks 521 are provided on both sides of the movable bracket 52. A limit plate 511 is provided in the opening of the base 51. The movable bracket 52 is engaged in the base 51 to prevent the movable bracket 52 from coming out of the base 51. The two ends of the spring-loaded spring 53 abut against the inner sides of the base 51 and the movable bracket 52, respectively. When the first door 2 is opened to its maximum position, the first door 2 presses back against the rebound device 5, causing the rebound spring 53 to contract. After releasing, the rebound spring 53 pops forward. The rebound device 5 provides an initial velocity for the closing of the first door 2, and at the same time prevents the first door 2 from getting stuck and not returning to its original position, thus ensuring the smoothness of the closing process of the first door 2.

[0030] A door handle 23 is provided at the front end of the first door 2, and a sealing strip 22 is provided at the overlap between the rear end of the first door 2 and the second door 3 to eliminate the gap between the first door 2 and the second door 3 and ensure the sealing performance of the freezer.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An automatic closing door structure, characterized in that, include: A door frame assembly (1) is provided with a forward-inclined damping slide rail (4) and a support surface (121) parallel to the damping slide rail (4). A damping spring (44) is provided at the front end of the damping slide rail (4). The first door body (2) has door frame (21) on at least two opposite sides. The bottom of the door frame (21) is provided with a bottom wheel (213). The door frame (21) is installed in the damping slide rail (4). The bottom wheel (213) slides on the support surface (121). When the first door body (2) is open, it automatically closes under the action of gravity. The damping slide rail (4) slows down the closing speed of the first door body (2).

2. The automatic closing door structure according to claim 1, characterized in that, The first door (2) is stopped when it is opened. A spring-loaded device (5) is provided on the inner side of the door frame assembly (1). The spring-loaded device (5) includes a base (51) fixedly installed on the inner side of the door frame assembly (1), a movable bracket (52) movably connected to the base (51), and a spring-loaded spring (53) clamped between the base (51) and the movable bracket (52). The movable bracket (52) can move along the sliding direction of the first door (2).

3. The automatic closing door structure according to claim 2, characterized in that, Both the base (51) and the movable bracket (52) are provided with openings, which are arranged opposite to each other. Wedge blocks (521) are provided on both sides of the movable bracket (52), and a limit plate (511) is provided in the opening of the base (51). The movable bracket (52) is engaged in the base (51), and the two ends of the rebound spring (53) abut against the inner sides of the base (51) and the movable bracket (52), respectively.

4. The automatic closing door structure according to claim 1, characterized in that, The damping slide rail (4) includes a slide groove (41), in which a slider (42) and a damping spring (44) are provided. The slider (42) can slide along the slide groove (41), and a limit groove (43) is provided on the slider (42). The damping spring (44) abuts against the front side of the slider (42).

5. The automatic closing door structure according to claim 4, characterized in that, A locking block (212) is provided on the outside of the door frame (21), and the locking block (212) is located in the limiting groove (43).

6. The automatic closing door structure according to claim 1, characterized in that, The door frame assembly (1) is also provided with a second door body (3), which is located on the rear side of the first door body (2). A sealing strip (22) is provided at the overlap between the rear end of the first door body (2) and the second door body (3).

7. The automatic closing door structure according to claim 1, characterized in that, The bottom of the front end and the rear end of the door frame (21) are provided with bottom grooves (211), and the bottom wheels (213) are provided in the bottom grooves (211). When the first door body (2) is closed, the two bottom wheels (213) are stationary in the support surface (121) with an arc-shaped positioning groove (122).

8. The automatic closing door structure according to claim 1, characterized in that, The first door (2) is equipped with a door handle.

9. A refrigerator, comprising a cabinet body having an internal cavity and a door structure disposed on the top of the cabinet body for opening and closing the internal cavity, characterized in that, The door structure uses the automatic closing door structure as described in any one of claims 1-8.

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