Door closing device and refrigerator

Abstract

The invention discloses a door closing device and a refrigerator, and the door closing device comprises a hinge structure through which a refrigerator door is connected to a refrigerator body; the hinge structure is provided with a first boss structure and a clamping groove. The door closer is fixedly connected to the box door, the door closer rotates along with the box door, the door closer is matched with the hinge structure in a relatively rotating mode, a second boss structure is arranged on the door closer, and the second boss structure can elastically deform; in the rotating process of the door closer, the second boss structure at least has a first position state and a second position state; when the second boss structure is in the first position state, the second boss structure is in interference fit with the first boss structure; when the second boss structure is in the second position state, the second boss structure is clamped into the clamping groove. According to the door closing device and the refrigerator, the problems that in the prior art, a refrigerator door hovering structure of a refrigerator is complex in part assembly and high in part cost are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a door closing device and a refrigerator. Background Art

[0002] Existing refrigerator door bodies are mainly divided into two categories: glass door bodies and steel door bodies. Mid-to-high-end refrigerators are mainly glass door bodies, and the overall weight of the door body is large. The door closer and the refrigerator door hinge on the door body are flat and gapless. The mainstream refrigerator door hinge is a sheet metal hinge formed by sheet metal bending. Therefore, the flatness of the hinge seat plane has shape and position tolerances during production and processing, and there is a certain tilt angle. When the refrigerator door is opened, the refrigerator door body is in a free motion state. If the refrigerator door hinge seat plane tilts upward, the refrigerator door body cannot hover at a specific angle due to the weight, and the door body is prone to self-return, which poses a risk of bumping the user; if the refrigerator door hinge seat plane tilts downward, the refrigerator door body is easy to open outwards, and the door body may bump against cabinets, walls and other objects, damaging the appearance of the door body.

[0003] The solutions proposed in the industry for the above problems are mainly designed around refrigerator door hinges. The problem of the refrigerator door being unable to hover is solved by using spin-stamped refrigerator hinges. Spin-stamped hinges add upper and lower closing parts and springs separately to the hinges. The springs engage the racks or steps of the upper and lower closing parts to allow the door to hover at a specific angle. Spin-stamped hinges are complex to assemble and have high parts costs, which affects production efficiency.

[0004] In summary, the refrigerator door suspension structure in the prior art has the problems of complex parts assembly and high parts cost. Summary of the invention

[0005] The embodiments of the present invention provide a door closing device and a refrigerator to solve the problems of complex parts assembly and high parts cost in the refrigerator door suspension structure in the prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides a door closing device, comprising: a hinge structure, through which the box door is connected to the box body; the hinge structure is provided with a first boss structure and a slot; a door closer, the door closer is fixedly connected to the box door, the door closer rotates with the box door, the door closer and the hinge structure are relatively rotated, and the door closer is provided with a second boss structure, which can be elastically deformed; during the rotation of the door closer, the second boss structure has at least a first position state and a second position state; when the second boss structure is in the first position state, the second boss structure is interference fit with the first boss structure; when the second boss structure is in the second position state, the second boss structure is snapped into the slot.

[0007] Furthermore, the top surface of the first boss structure is a plane; when the second boss structure performs friction sliding on the top surface of the first boss structure, the deformation amount of the second boss structure is the same.

[0008] Furthermore, the first boss structure also has two inclined surfaces connected to two sides of the top surface, and there is a smooth transition between the top surface and the inclined surfaces of the first boss structure.

[0009] Furthermore, when the second boss structure is in the second position state, the second boss structure can completely enter the slot.

[0010] Furthermore, it also includes: a rotating shaft assembly, the rotating shaft assembly is connected to the hinge structure, the door closer is connected to the rotating shaft assembly, the hinge structure is formed with a plurality of the first boss structures for the rotating shaft assembly, the first boss structures are arranged at intervals along the circumferential direction of the rotating shaft assembly, and the rotation axis of the door closer is colinear with the axis of the rotating shaft assembly.

[0011] Furthermore, the hinge structure includes an upper hinge and a lower hinge, the upper hinge cooperates with the top of the box door, the lower hinge cooperates with the bottom of the box door, the lower hinge is provided with a first boss structure, and the door closer is connected and cooperated with the lower hinge.

[0012] Furthermore, the first boss structure is multiple, the position of the clamping slot is multiple, and the clamping slot is arranged adjacent to the first boss structure;

[0013] The positions of the plurality of slots are configured so that when the door is opened at 90° to 95° and 130° to 140°, the second boss structure is inserted into the slot.

[0014] Furthermore, a rib for increasing friction is disposed on the top of the second boss structure.

[0015] Further, the first boss structure is a separate component, and the first boss structure is detachably connected to the hinge structure;

[0016] The second boss structure is a separate component, and the second boss structure is detachably connected to the door closer.

[0017] Furthermore, the shaft assembly includes a shaft structure and a shaft sleeve, the shaft structure is fixedly connected to the hinge structure, the shaft sleeve is fixedly connected to the door closer, the shaft structure is rotatably inserted into the shaft sleeve, and the shaft structure and the shaft sleeve are interference fit.

[0018] According to another aspect of the present invention, a refrigerator is provided, comprising the above-mentioned door closing device.

[0019] The door closing device of the present invention can realize the door suspension by cooperating with the hinge structure and the door closer. A second boss structure is added to the door closer. When the door rotates, the door closer rotates and causes the second boss structure to enter the first position state and the second position state. When the second boss structure is in the first position state, the second boss structure is interference fit with the first boss structure on the fixed hinge structure. The interference fit provides sufficient elastic deformation and friction for the second boss structure of the door closer to offset the gravity of the door and prevent the door from rotating freely, thereby achieving the effect of the door suspension. When the second boss structure is in the second position state, the second boss structure is inserted into the card slot. The structure of the card slot plays a role of blocking, so that the door cannot rotate at will, thereby achieving the door stop and suspension. The door suspension effect is achieved by arranging the first boss structure and the card slot on the hinge structure and cooperating with the door closer. The door closing device of the present invention can achieve the hovering of the box door only by optimizing the matching structure of the hinge structure and the door closer. Compared with the complex component matching in the prior art, the door closing device of the present invention has a simple structure, direct and efficient component matching, and lower component cost. It does not occupy the structural space in other positions, and the hovering work can be completed only on the hinge structure and the door closer, which greatly improves the utilization rate of the structural space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a door closing device according to an embodiment of the present invention;

[0021] Figure 2 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the cooperation between the hinge structure of the door closing device and the door closer according to an embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a hinge structure of a door closing device according to an embodiment of the present invention;

[0024] Figure 5 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0025] Figure 6 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0026] Figure 7 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0027] Figure 8 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0028] Fig. 9is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0029] Fig.10 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0030] Fig.11 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0031] Fig.12 is a three-dimensional schematic diagram of a door closing device according to an embodiment of the present invention in one direction;

[0032] Fig.13 is a three-dimensional schematic diagram of a door closer in one direction of a door closer device according to an embodiment of the present invention;

[0033] Fig.14 is a three-dimensional schematic diagram of a door closer in one direction of a door closer device according to an embodiment of the present invention;

[0034] Fig.15 is a three-dimensional schematic diagram of a door closer in one direction of a door closer device according to an embodiment of the present invention;

[0035] Fig.16 is a three-dimensional schematic diagram of a door closer in one direction of a door closer device according to an embodiment of the present invention;

[0036] Fig.17 It is a schematic diagram of the structural decomposition of a refrigerator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0038] See also Figures 1 to 16 As shown, according to an embodiment of the present invention, a door closing device is provided, comprising a hinge structure 10 and a door closer 20, wherein the box door is connected to the box body through the hinge structure 10; the hinge structure 10 has a first boss structure 11 and a slot 12; the door closer 20 is fixedly connected to the box door, the door closer 20 rotates with the box door, the door closer 20 and the hinge structure 10 rotate relative to each other, a second boss structure 21 is provided on the door closer 20, and the second boss structure 21 can be elastically deformed; during the rotation of the door closer 20, the second boss structure 21 has at least a first position state and a second position state;

[0039] When the second boss structure 21 is in the first position, the second boss structure 21 is interference fit with the first boss structure 11;

[0040] When the second boss structure 21 is in the second position, the second boss structure 21 is inserted into the slot 12 .

[0041] The door closing device of the present invention can realize the door suspension by cooperating with the hinge structure and the door closer. A second boss structure 21 is added to the door closer 20. When the door rotates, the door closer 20 rotates and causes the second boss structure 21 to enter the first position state and the second position state. When the second boss structure 21 is in the first position state, the second boss structure 21 is interference fit with the first boss structure on the fixed hinge structure. The interference fit provides sufficient elastic deformation and friction for the second boss structure of the door closer to offset the gravity of the door and prevent the door from rotating freely, thereby achieving the effect of the door suspension. When the second boss structure is in the second position state, the second boss structure 21 is inserted into the card slot 12. The structure of the card slot 12 plays a role of blocking, so that the door cannot rotate at will, thereby achieving the door stop and suspension. The door suspension effect is achieved by arranging the first boss structure 11 and the card slot 12 on the hinge structure and cooperating with the door closer. The door closing device of the present invention can achieve the hovering of the box door only by optimizing the matching structure of the hinge structure and the door closer. Compared with the complex component matching in the prior art, the door closing device of the present invention has a simple structure, direct and efficient component matching, and lower component cost. It does not occupy the structural space in other positions, and the hovering work can be completed only on the hinge structure and the door closer, which greatly improves the utilization rate of the structural space.

[0042] The number of the first boss structures 11 can be multiple, the number of the slots 12 can be at least one, and the distribution and adjacent relationship of the first boss structures 11 and the slots 12 can be adjusted according to specific needs. The material of the second boss structure 21 is rubber or soft plastic, which can be elastically deformed and has high wear resistance.

[0043] Combination Figure 3 and Figure 4 As shown, the top surface 11a of the first boss structure 11 is a plane; when the second boss structure 21 performs friction sliding on the top surface 11a of the first boss structure 11, the deformation amount of the second boss structure 21 is the same.

[0044] During the movement of the second boss structure (the box door drives the door closer, and then drives the second boss structure to move relative to the hinge structure), after entering the first position state, the second boss structure and the top surface of the first boss structure 21 produce a surface-to-surface interference fit. The elastic deformation and friction generated at this time can offset the gravity of the box door and achieve the door hovering. When the second boss structure and the top surface of the first boss structure are subjected to surface-to-surface friction and interference fit, in order to enhance the user's experience of opening the box door, the top surface 11a of the first boss structure 11 is set to a plane, so that the deformation amount of the second boss structure 21 is the same and the friction force is consistent, so that when the user turns the box door, the turning force used is consistent, and there will be no sudden inability to turn the box door or the feeling of frustration caused by the box door turning force fluctuating, thereby enhancing the user's experience.

[0045] Preferably, see Figure 4 The first boss structure 11 also has two inclined surfaces 11b connected to both sides of the top surface 11a, and the top surface 11a and the inclined surfaces 11b of the first boss structure 11 are smoothly transitioned.

[0046] When the refrigerator door is opened at a certain angle (such as 53.5°), the second boss structure on the door closer is tangent to the inclined surface of the first boss structure of the hinge structure. Figure 3 The position shown in the figure shows that the deformation of the second boss structure is small, and the friction during the door opening process is small, so that the user can turn the door with less force, and the door opening and closing will not feel too heavy, which increases the user experience. The smooth transition between the top surface 11a and the inclined surface 11b (which can be a rounded corner) can make the change of friction more linear and soft, reduce the sense of frustration, and improve the user experience.

[0047] Combination Figure 5 and Figure 6 As shown, when the second boss structure 21 is in the second position, the second boss structure 21 can completely enter the slot 12 .

[0048] The width of the slot 12 is greater than the width of the second boss structure, ensuring that when the refrigerator door is opened to a certain angle (such as 90°), the door can be stopped and suspended through the cooperation of the second boss structure and the slot, making it convenient for users to take food.

[0049] The door closing device also includes a rotating shaft assembly 30, which is connected to the hinge structure 10, and the door closer 20 is connected to the rotating shaft assembly 30. The hinge structure 10 is formed with a plurality of first boss structures 11 for the rotating shaft assembly 30, and the first boss structures 11 are arranged at intervals along the circumferential direction of the rotating shaft assembly 30. The rotation axis of the door closer 20 is colinear with the axis of the rotating shaft assembly 30.

[0050] The function of the rotating shaft assembly 30 is to enable the door closer 20 to stably rotate around the hinge structure 10, so that the second boss structure of the door closer 20 can cooperate with the first boss structure more stably and the route is fixed, which is convenient for planning the opening angle of the door and selecting the hovering angle of the door.

[0051] Combination Fig.17 As shown, the hinge structure 10 includes an upper hinge 51 and a lower hinge 52, the upper hinge cooperates with the top of the box door, the lower hinge cooperates with the bottom of the box door, a first boss structure 11 is provided on the lower hinge, and the door closer 20 is connected and cooperated with the lower hinge 52.

[0052] The lower hinge is provided with a first boss structure and a slot, and cooperates with the door closer 20. The advantage of selecting the lower hinge is that the weight of the door will be applied to the lower hinge, so that during the rotation of the door closer 20, even if the interference fit has a certain friction, the lower hinge can remain stable and will not shake. The lower hinge not only supports the door, but also cooperates with the door closer to suspend the door, and can also maintain a stable structure, achieving a multi-purpose effect.

[0053] See also Figures 6 to 12 , there are multiple first boss structures 11, there are multiple positions of the card slot 12, and the card slot 12 is arranged adjacent to the first boss structure 11;

[0054] The positions of the plurality of slots 12 are configured so that when the door is opened at 90° to 95° and 130° to 140°, the second boss structure 21 is inserted into the slot 12 .

[0055] Since the frequency of taking out items is highest when the door is opened at 90° to 95° and 130° to 140°, the position of the card slot 12 is configured to correspond to the door opening angles. The position configuration of the card slot 12 can enhance the user experience.

[0056] The friction and elastic deformation generated by the interference fit between the door closer boss and the refrigerator hinge structure overcome the weight of the door to achieve hovering at any angle between 0°-135°. Considering that when the user uses the refrigerator normally, the opening angle of the refrigerator door is at least 90° or opened to the maximum door opening angle, the main purpose of selecting these two special angles to set the card slot is that the user's refrigerator door is opened to these two special angles frequently and for a long time. In order to avoid the parts being in a state of friction and elastic deformation for a long time, which will reduce the life of the parts, the card slots are specially designed at two special angles. When the door is opened to these two special angles, the door closer boss does not produce elastic deformation and friction, thereby extending the service life of the parts.

[0057] Arranging multiple boss structures to form multiple slots can achieve hovering in multiple positions, but due to the limitations of the part assembly space and the size of the part itself, it is impossible to arrange multiple slots on the side of the part for hovering when the overall size of the part is small. The present invention makes full use of the structural space and structural size.

[0058] In this embodiment, the opening angle and the matching process are illustrated by examples: when the door is opened to 53.5°, the second boss structure and the inclined surface of the first boss structure are tangent, and the top of the first boss structure is designed to be a plane. After the door is opened to more than 53.5°, the second boss structure of the door closer and the top plane of the first boss structure produce a surface-to-surface interference fit, which provides sufficient elastic deformation and friction for the door closer, offsets the gravity of the door, and prevents the door from rotating freely. After the door continues to rotate 36°, the second boss structure of the door closer is tangent to the inclined surface on the other side of the first boss structure. When the door body rotates more than 90°, the second boss structure stays in the slot between the first boss structures to achieve a stop effect. When the door is opened at an angle of 97.5°, the second boss structure is tangent to the other first boss structure, and the structural matching is the same as before. The opening angle of the refrigerator door is greater than 97.5°, the second boss structure and the top plane of the first boss structure are interference fitted, and the door body is suspended by relying on elastic deformation and friction. The opening angle of the refrigerator door is greater than 133.5°, and the refrigerator door body relies on the card slot (the card slot is formed by the edge protrusion of the first boss structure and the hinge structure) to stop, so that the door body is suspended.

[0059] Combination Figures 13 to 16 As shown, a rib for increasing friction is disposed on the top of the second boss structure 21. The shape of the rib can be selected and designed according to the actual structural space, and the shape and position of the second boss structure can also be selected and designed according to the actual structural space.

[0060] Preferably, the first boss structure 11 is a separate component, and the first boss structure 11 is detachably connected to the hinge structure 10;

[0061] The second boss structure 21 is a separate component, and the second boss structure 21 is detachably connected to the door closer 20 .

[0062] The first boss structure 11 and the second boss structure 21 are designed as separate injection molded parts, which is convenient for subsequent replacement of parts after they are worn out due to long-term use.

[0063] Combination Figures 9 to 16 As shown, the shaft assembly 30 includes a shaft structure 31 and a shaft sleeve 32, the shaft structure 31 is fixedly connected to the hinge structure 10, the shaft sleeve 32 is fixedly connected to the door closer 20, the shaft structure 31 is rotatably inserted into the shaft sleeve 32, and the shaft structure 31 and the shaft sleeve 32 are interference fit.

[0064] The interference fit between the shaft structure 31 and the shaft sleeve 32 can assist the refrigerator door to suspend, increase friction, and ensure the stability of the door opening. The shaft sleeve 32 is fixedly connected to the door closer 20, which is more flexible and convenient in the process of manufacturing parts, reduces manufacturing difficulty, and reduces production costs.

[0065] The shape feature of the first boss structure is similar to a trapezoidal structure, and slope features are designed on both sides to ensure that the second boss structure of the door closer smoothly transitions into contact with the first boss structure during movement, thereby preventing the door from being unable to be easily opened due to large interference.

[0066] The door closing device of the present invention can effectively solve the problem that the door of the existing refrigerator cannot hover at any angle, thereby preventing the refrigerator door from colliding with other objects or affecting the user's taking of objects due to the inability to hover. In addition, the door closing device of the present invention uses a small number of parts, has a simple structure, and the parts are directly assembled in a simple manner. It can achieve low-cost and high-efficiency production while meeting the refrigerator door hovering function.

[0067] See also Fig.17 As shown, according to an embodiment of the present invention, a refrigerator is provided, and the refrigerator includes the above-mentioned door closing device.

[0068] The refrigerator as a whole is composed of a refrigerator body 41, a door 42, an upper hinge 51, and a lower hinge 52. The door is connected and fixed to the refrigerator body through the upper hinge and the lower hinge to form the entire refrigerator. The door closer is fixed to the door through a hexagonal bolt, and the upper hinge and the lower hinge are fixed to the refrigerator body through a flat bolt. The door closer and the lower hinge are connected through a rotating shaft assembly, so that the door can move in a circle around the lower hinge to open and close the door. The assembly of the various parts is simple, and the cost of the parts is lower than that of the spinning hinge.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0070] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0071] Of course, the above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the basic principles of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A door closing device, characterized in that: include: A hinge structure (10), the box door is connected to the box body through the hinge structure (10); the hinge structure (10) has a first boss structure (11) and a slot (12); A door closer (20), wherein the door closer (20) is fixedly connected to the door, the door closer (20) rotates with the door, the door closer (20) and the hinge structure (10) rotate relative to each other, a second boss structure (21) is provided on the door closer (20), and the second boss structure (21) can be elastically deformed; during the rotation of the door closer (20), the second boss structure (21) has at least a first position state and a second position state; When the second boss structure (21) is in the first position state, the second boss structure (21) and the first boss structure (11) are in interference fit; When the second boss structure (21) is in the second position state, the second boss structure (21) is snapped into the snap-in groove (12).

2. The door closing device according to claim 1, characterized in that: The top surface (11a) of the first boss structure (11) is a plane; when the second boss structure (21) performs friction sliding on the top surface (11a) of the first boss structure (11), the deformation amount of the second boss structure (21) is the same.

3. The door closing device according to claim 2, characterized in that: The first boss structure (11) further comprises two inclined surfaces (11b) connected to the two sides of the top surface (11a); the top surface (11a) and the inclined surfaces (11b) of the first boss structure (11) form a smooth transition.

4. The door closing device according to claim 1, characterized in that: When the second boss structure (21) is in the second position state, the second boss structure (21) can completely enter the clamping groove (12).

5. The door closing device according to claim 1, characterized in that: Also includes: A rotating shaft assembly (30), wherein the rotating shaft assembly (30) is connected to the hinge structure (10), and the door closer (20) is connected to the rotating shaft assembly (30); the hinge structure (10) is provided with a plurality of first boss structures (11) for the rotating shaft assembly (30); the first boss structures (11) are arranged at intervals along the circumferential direction of the rotating shaft assembly (30); and the rotation axis of the door closer (20) is colinear with the axis of the rotating shaft assembly (30).

6. The door closing device according to claim 1, characterized in that: The hinge structure (10) comprises an upper hinge and a lower hinge, wherein the upper hinge cooperates with the top of the door, and the lower hinge cooperates with the bottom of the door, a first boss structure (11) is provided on the lower hinge, and the door closer (20) is connected and cooperated with the lower hinge.

7. The door closing device according to claim 1, characterized in that: There are a plurality of the first boss structures (11), there are a plurality of positions of the clamping slots (12), and the clamping slots (12) are arranged adjacent to the first boss structures (11); The positions of the plurality of card slots (12) are configured such that when the cabinet door is opened at 90° to 95° and 130° to 140°, the second boss structure (21) is inserted into the card slot (12).

8. The door closing device according to claim 1, characterized in that: The top of the second boss structure (21) is provided with ribs for increasing friction.

9. The door closing device according to claim 1, characterized in that: The first boss structure (11) is a separate component, and the first boss structure (11) is detachably connected to the hinge structure (10); The second boss structure (21) is a separate component, and the second boss structure (21) is detachably connected to the door closer (20).

10. The door closing device according to claim 5, characterized in that: The rotating shaft assembly (30) comprises a shaft structure (31) and a shaft sleeve (32); the shaft structure (31) is fixedly connected to the hinge structure (10); the shaft sleeve (32) is fixedly connected to the door closer (20); the shaft structure (31) is rotatably inserted into the shaft sleeve (32); and the shaft structure (31) and the shaft sleeve (32) are in interference fit.

11. A refrigerator, characterized in that: A door closing device comprising the door closing device according to any one of claims 1 to 10.

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