Hinge with self-closing function

Abstract

The invention discloses a hinge with a self-closing function, and belongs to the field of hinges, the hinge comprises a door support, a cabinet support, four connecting pieces and a self-closing assembly, a driving piece is rotatably mounted on a second connecting piece, a guiding piece is movably mounted on a fourth connecting piece, a guiding column is located in a guiding groove, and two ends of an elastic piece are connected with the fourth connecting piece and the guiding piece respectively; when the hinge is in an open state, the guide column of the second connecting piece abuts against the end of the guide groove so that the elastic piece can be kept in a stretching state. When the hinge moves from the open state to the critical state, the driving piece abuts against the abutting face to drive the guiding piece to move relative to the fourth connecting piece till the driving piece abuts against the protruding teeth. When the hinge moves from a critical state to a closed state, the driving piece crosses the convex teeth to fall into the groove, the elastic force of the elastic piece drives the hinge with the self-closing function to move to the closed state, the abutting face, the groove, the convex teeth and the guide groove are integrated on one part of the guide piece, the number of hinge parts is small, the overall structure is simple, and the size is small.

Description

Technical Field

[0001] The invention relates to a hinge, in particular to a hinge with a self-closing function. Background Art

[0002] In order to ensure its thermal insulation performance, the door of a refrigerator is usually thicker, which requires the hinge connecting the door to the refrigerator cabinet to have a larger opening to avoid interference between the door and the refrigerator cabinet during opening / closing. In particular, as built-in integrated refrigerators become more popular, the door of the refrigerator needs to be assembled to the cabinet door panel, which makes the thickness of the entire door even thicker, and the hinge must have a larger opening. In addition, the existing hinges usually have a self-closing function, so that when the refrigerator door is closed to a certain angle, the door automatically closes with the refrigerator cabinet to prevent the door from being loosely closed.

[0003] Existing hinges with large opening and self-closing functions are mostly implemented using cam mechanisms, which leads to a complex hinge structure. At the same time, there is also a problem that a large external force needs to be applied when the hinge enters the critical point of the self-closing stage, and there will be a more obvious sense of force suspension at the critical point, resulting in a poor user experience. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a hinge with a self-closing function which has a simple structure and requires little external force when entering the critical point of the self-closing stage.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A hinge with a self-closing function comprises a door support, a cabinet support, a first connecting member, a second connecting member, a third connecting member and a fourth connecting member, wherein two ends of the first connecting member are rotatably connected to the door support and the fourth connecting member respectively, two ends of the second connecting member are rotatably connected to the door support and the fourth connecting member respectively, two ends of the third connecting member are rotatably connected to the cabinet support and the second connecting member respectively, and the cabinet support is rotatably connected to the fourth connecting member. The hinge with a self-closing function also comprises a self-closing component, the self-closing component comprises a driving member, a guiding member and an elastic member, the driving member is rotatably mounted on the second connecting member, the guiding member is movably mounted on the fourth connecting member, the second connecting member is provided with a guide column, the guide member is provided with a supporting surface, a groove, a convex tooth and a guide groove, the convex tooth is located between the supporting surface and the groove, the guide column is located in the guide groove, and two ends of the elastic member are respectively connected to the fourth connecting member and the guide.

[0007] When the hinge with the self-closing function is in an open state, the guide column contacts the end of the guide groove to keep the elastic member in a stretched state;

[0008] When the hinge with the self-closing function moves from the open state to the critical state, the driving member contacts the abutting surface to drive the guide member to move relative to the fourth connecting member until the driving member contacts the convex tooth;

[0009] When the hinge with the self-closing function moves from the critical state to the closed state, the driving member passes over the convex tooth and falls into the groove, and the elastic force of the elastic member drives the hinge with the self-closing function to move to the closed state.

[0010] Furthermore, the fourth connecting member is provided with a ninth hinge hole, a tenth hinge hole and an eleventh hinge hole, the ninth hinge hole and the tenth hinge hole are respectively located at two ends of the fourth connecting member, the eleventh hinge hole is located between the ninth hinge hole and the tenth hinge hole, the cabinet support is rotatably connected to the fourth connecting member through the ninth hinge hole, the second connecting member is rotatably connected to the fourth connecting member through the eleventh hinge hole, and the first connecting member is rotatably connected to the fourth connecting member through the tenth hinge hole.

[0011] Furthermore, the supporting surface is arc-shaped and faces the first connecting member.

[0012] Furthermore, the groove is located at the bottom of the guide member, and the groove faces the second connecting member.

[0013] Furthermore, the guide groove is curved and is located on a side of the guide member.

[0014] Furthermore, the second connecting member includes a second plate body, and the guide column extends from the second plate body and is perpendicular to the second plate body.

[0015] Furthermore, the fourth connecting member is rotatably connected to the second connecting member via a rotating shaft, and the self-closing component also includes a roller, which is rotatably mounted on the guide member, and the roller is in rolling contact with the rotating shaft.

[0016] Furthermore, the guide member is also provided with a rotation groove, the rotation groove is in contact with the rotation shaft, and the guide member rotates around the rotation shaft.

[0017] Furthermore, the self-closing component also includes a limiting shaft, which is installed on the guiding member, and the fourth connecting member is provided with a sliding groove, in which the end of the limiting shaft is located.

[0018] Furthermore, the slide groove is linear.

[0019] Furthermore, the elastic member is connected to the limiting shaft.

[0020] Furthermore, the driving member is a roller.

[0021] Furthermore, the hinge with the self-closing function also includes a buffer component, which includes a shell and a damper. The shell is installed on the fourth connecting member, and the damper is installed on the shell and the damper is in conflict with the first connecting member.

[0022] Furthermore, the second connecting member is provided with a sixth hinge hole, a seventh hinge hole and an eighth hinge hole, the eighth hinge hole is located between the sixth hinge hole and the seventh hinge hole, the second connecting member is rotatably connected to the fourth connecting member through the sixth hinge hole, the second connecting member is rotatably connected to the door support through the seventh hinge hole, and the second connecting member is rotatably connected to the third connecting member through the eighth hinge hole.

[0023] Compared with the prior art, the hinge with self-closing function of the present invention has the following advantages:

[0024] (1) By providing a supporting surface, a groove, a convex tooth and a guide groove on one part of the guide, the self-closing function of the hinge is realized, the hinge has fewer parts, the overall structure is simple and the volume is small;

[0025] (2) The roller is used as the driving part, and the hinge cost is low;

[0026] (3) The abutting surface and the guide groove are arranged on the same part, and the hinge transmission is more accurate;

[0027] (4) The abutting surface, the convex teeth and the grooves have a smooth transition, and the external force required for the driving member to pass over the convex teeth is small, so the sense of force frustration is small and the user experience is good;

[0028] (5) The buffer component reduces the speed of the hinge's self-closing to prevent the user from being pinched. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of a hinge with a self-closing function in a critical state of the present invention;

[0030] Figure 2 for Figure 1 An exploded view of the hinge with self-closing function in a critical state;

[0031] Figure 3 for Figure 1 A three-dimensional view of a first connecting member of a hinge having a self-closing function;

[0032] Figure 4 for Figure 1 A three-dimensional view of the second connecting member of the hinge with a self-closing function;

[0033] Figure 5 for Figure 1 A three-dimensional view of a fourth connecting member of a hinge having a self-closing function;

[0034] Figure 6 for Figure 1 A three-dimensional view of a hinge guide with a self-closing function;

[0035] Figure 7 for Figure 6 Another perspective view of the guide member;

[0036] Figure 8 for Figure 1 A three-dimensional cross-sectional view of a hinge with a self-closing function;

[0037] Fig. 9 A three-dimensional diagram of a hinge with a self-closing function in a closed state according to the present invention;

[0038] Fig.10 for Fig. 9 A three-dimensional cross-sectional view of the self-closing function;

[0039] Fig.11 A three-dimensional diagram of the hinge with a self-closing function of the present invention in an open state;

[0040] Fig.12 for Fig.11 A three-dimensional cross-sectional view of the self-closing function.

[0041] In the figure: 10, door support; 11, bottom plate; 110, first fixing hole; 12, first side plate; 120, first hinge hole; 121, second hinge hole; 20, cabinet support; 21, top plate; 210, second fixing hole; 22, second side plate; 220, third hinge hole; 221, end hinge hole; 30, first connecting member; 31, first connecting wall; 32, first plate body; 320, fourth hinge hole; 321, fifth hinge hole; 40, second connecting member; 41, second connecting wall; 42, second plate body; 420, sixth hinge hole; 421, seventh hinge hole; 422, eighth hinge hole; 423, first mounting hole; 4 3. Guide column; 50. Third connecting member; 60. Fourth connecting member; 61. Third connecting wall; 62. Third plate body; 620. Ninth hinge hole; 621. Tenth hinge hole; 623. Eleventh hinge hole; 624. Slide groove; 63. Connecting end; 70. Self-closing assembly; 71. Driving member; 72. Guide member; 720. Second mounting hole; 721. Rotating groove; 722. Abutting surface; 723. Groove; 724. Protruding tooth; 725. Guide groove; 726. Third mounting hole; 73. Roller; 74. Limiting shaft; 75. Elastic member; 80. Buffer assembly; 81. Shell; 810. Twelfth hinge hole; 82. Damper. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] like Figure 1 as well as Figure 2 As shown, the hinge with a self-closing function of the present invention includes a door support 10, a cabinet support 20, a first connecting member 30, a second connecting member 40, a third connecting member 50, a fourth connecting member 60, a self-closing component 70 and a buffer component 80.

[0046] The door support 10 is used to fix the door body. In the present embodiment, the hinge with a self-closing function is applied to the refrigerator, and the door support 10 is fixed to the refrigerator door. Specifically, the door support 10 includes a bottom plate 11 and two first side plates 12. The two first side plates 12 are parallel to each other, and the bottom plate 11 connects the two first side plates 12. The bottom plate 11 is provided with a first fixing hole 110, and the first fixing hole 110 is used to be fixed to the refrigerator door. Each first side plate 12 is provided with a first hinge hole 120 and a second hinge hole 121, the first hinge hole 120 is used to be rotatably connected to the second connecting member 40, and the second hinge hole 121 is used to be rotatably connected to the first connecting member 30.

[0047] The cabinet support 20 is used to be fixed to the cabinet body. In the present embodiment, the hinge with a self-closing function is applied to the refrigerator, and the cabinet support 20 is fixed to the refrigerator cabinet. The cabinet support 20 is provided with a receiving groove for accommodating the first connecting member 30, the second connecting member 40, the third connecting member 50, the fourth connecting member 60, the self-closing assembly 70 and the buffer assembly 80 when the hinge is closed. Specifically, the cabinet support 20 includes a top plate 21 and two second side plates 22, the two second side plates 22 are parallel to each other, and the top plate 21 connects the two second side plates 22. A receiving groove is formed between the two second side plates 22 and the top plate 21. The top plate 21 is provided with a second fixing hole 210, and the second fixing hole 210 is used to be fixed to the cabinet body. The second side plate 22 is provided with a third hinge hole 220 and an end hinge hole 221, and the third hinge hole 220 and the end hinge hole 221 are located at the same end of the second side plate 22. The cabinet support 20 is rotatably connected to the fourth connecting member 60 via the third hinge hole 220 , and the cabinet support 20 is rotatably connected to the third connecting member 50 via the end hinge hole 221 .

[0048] Please continue reading Figure 3 The first connecting member 30 is a double-plate design with a U-shaped cross section. While increasing the structural strength, the first connecting member 30 can accommodate other components inside, reduce the volume of the hinge and protect other components. The first connecting member 30 includes a first connecting wall 31 and two first plates 32. The two first plates 32 extend from both sides of the first connecting wall 31, and the two first plates 32 are parallel to each other and perpendicular to the first connecting wall 31.

[0049] Each first plate 32 is provided with a fourth hinge hole 320 and a fifth hinge hole 321, which are respectively located at two ends of the first plate 32. The first connecting member 30 is rotatably connected to the fourth connecting member 60 through the fourth hinge hole 320, and the first connecting member 30 is rotatably connected to the door support 10 through the fifth hinge hole 321.

[0050] Please continue reading Figure 4 The second connecting member 40 is a double-plate design with a U-shaped cross-section. While increasing the structural strength, the interior of the second connecting member 40 can accommodate other components, reduce the volume of the hinge and protect other components. Specifically, the second connecting member 40 includes a second connecting wall 41, two second plates 42 and two guide columns 43. The second connecting wall 41 is located between the two second plates 42 and connects the two second plates 42. The two second plates 42 are parallel to each other, and a receiving space is formed between the two second plates 42. The receiving space is used to install and accommodate the driving member 71 and the guide member 72. A guide column 43 is provided on one side of each second plate 42 facing the receiving space, and the guide column 43 is perpendicular to the second plate 42. The guide column 43 is used to keep the hinge in an open state to prevent the hinge from closing due to the restoring force of the elastic member 75 when the hinge is in an open state.

[0051] The second plate body 42 is provided with a sixth hinge hole 420, a seventh hinge hole 421, an eighth hinge hole 422 and a first mounting hole 423. The sixth hinge hole 420 and the seventh hinge hole 421 are respectively located at opposite ends of the second plate body 42, the eighth hinge hole 422 is located between the sixth hinge hole 420 and the seventh hinge hole 421, and the first mounting hole 423 is located near the sixth hinge hole 420. The second plate body 42 is rotatably connected to the fourth connecting member 60 through the sixth hinge hole 420, the second plate body 42 is rotatably connected to the door support 10 through the seventh hinge hole 421, and the second plate body 42 is rotatably connected to the end of the third connecting member 50 through the eighth hinge hole 422. The first mounting hole 423 is used to mount the driving member 71.

[0052] Please continue reading Figure 2 The third connecting member 50 is of a linear design, a first end of the third connecting member 50 is rotatably connected to the cabinet support 20 , and a second end of the third connecting member 50 is rotatably connected to the second connecting member 40 .

[0053] Please continue reading Figure 5The fourth connecting member 60 is a double-plate design. While increasing the structural strength, the interior of the fourth connecting member 60 can accommodate other components, reduce the volume of the damping hinge and protect other components. The fourth connecting member 60 includes a third connecting wall 61, two third plates 62 and a connecting end 63. The third connecting wall 61 connects the two third plates 62. The two third plates 62 are parallel to each other, and a receiving space is formed between the two third plates 62. The connecting end 63 extends from one end of the third connecting wall 61 and is located between the two third plates 62. The connecting end 63 is used to install the elastic member 75.

[0054] Each third plate body 62 is provided with a ninth hinge hole 620, a tenth hinge hole 621, an eleventh hinge hole 623 and a slide groove 624. The ninth hinge hole 620 and the tenth hinge hole 621 are respectively located at two ends of the third plate body 62. The eleventh hinge hole 623 is located between the ninth hinge hole 620 and the tenth hinge hole 621. The slide groove 624 is located between the ninth hinge hole 620 and the eleventh hinge hole 623. The fourth connecting member 60 is rotatably connected to the cabinet support 20 through the ninth hinge hole 620, and the fourth connecting member 60 is rotatably connected to the first connecting member 30 through the tenth hinge hole 621. The fourth connecting member 60 is rotatably connected to the second connecting member 40 through the eleventh hinge hole 623. The slide groove 624 is linear, and the slide groove 624 is used to install the limit shaft 74, and by limiting the limit position of the limit shaft 74, the limit angle of rotation of the guide member 72 around the rotating shaft is limited.

[0055] Please continue reading Figure 2 The self-closing component 70 includes a driving member 71, a guiding member 72, a roller 73, a limiting shaft 74 and an elastic member 75.

[0056] The driving member 71 is used to drive the guide member 72 to rotate, and the driving member 71 is rotatably mounted on the first mounting hole 423 of the second connecting member 40. Specifically, the driving member 71 adopts a driving roller to reduce the hinge cost, and the external force required for closing is small.

[0057] Please continue reading Figure 6 as well as Figure 7 The guide member 72 is provided with a second mounting hole 720, a rotation groove 721, a supporting surface 722, a groove 723, a protruding tooth 724, a guide groove 725 and a third mounting hole 726. The second mounting hole 720 and the rotation groove 721 are located above the guide member 72, the supporting surface 722 is located at the front end of the guide member 72, the protruding tooth 724 and the groove 723 are located below the guide member 72, the guide groove 725 is provided at the side of the guide member 72, and the third mounting hole 726 is located at the end of the guide member 72.

[0058] Specifically, the second mounting hole 720 is used to mount the roller 73, and the roller 73 abuts against the rotating shaft, so that the guide member 72 rolls and contacts with the rotating shaft to reduce friction. The rotating groove 721 is in an arc shape, and the rotating groove 721 abuts against the rotating shaft, and the guide member 72 rotates around the rotating shaft, and the rotating shaft rotatably connects the fourth connecting member 60 with the second connecting member 40. The abutting surface 722 is in an arc shape, and the driving member 71 abuts against the abutting surface 722 to drive the guide member 72 to rotate around the rotating shaft. A convex tooth 724 is formed at the end of the abutting surface 722, and the convex tooth 724 abuts against the driving member 71 to put the hinge in a critical state. The groove 723 is located on the other side of the convex tooth 724. When the driving member 71 passes over the convex tooth 724 and falls into the groove 723, the hinge is converted from the critical state to the closed state and begins to close by itself. The guide slot 725 is curved, and the guide post 43 is located in the guide slot 725 and moves along the guide slot 725. When the hinge is in the open state, the guide post 43 moves to the end of the guide slot 725 and contacts the end of the guide slot 725, so that the force of the elastic member 75 to restore the deformation cannot pull the guide member 72, so that the hinge remains in the open state, and the elastic member 75 is prevented from automatically closing the hinge. The third mounting hole 726 is used to install the limit shaft 74, and the end of the limit shaft 74 is located in the slide slot 624. By limiting the limit position of the limit shaft 74, the limit angle of the guide member 72 rotating around the rotating axis is limited.

[0059] One end of the elastic member 75 is fixed to the connecting end 63 of the fourth connecting member 60, and the other end is fixed to the limiting shaft 74. Specifically, the elastic member 75 is a spring.

[0060] Please continue reading Figure 2 The buffer assembly 80 includes a shell 81 and a damper 82. The shell 81 is installed between the two third plates 62 of the fourth connecting member 60. The shell 81 is provided with a twelfth hinge hole 810, and the twelfth hinge hole 810 is coaxially arranged with the tenth hinge hole 621, so that the shell 81 rotates with the fourth connecting member 60. Specifically, a protrusion is provided on the shell 81, and the shell 81 is buckled to the fourth connecting member 60 through the protrusion. The damper 82 is installed on the shell 81, and the damper 82 contacts the first connecting member 30, so that when the hinge closes, the speed is reduced to prevent the user from being pinched.

[0061] When using the damping hinge, the door support 10 is fixedly connected to the door body, and the cabinet support 20 is fixedly connected to the cabinet body. Figure 11-12 As shown, the angle between the door support 10 and the cabinet support 20 is an obtuse angle, which meets the requirement of a large hinge opening. At this time, the guide column 43 is located at the end of the guide groove 725 and contacts the end of the guide groove 725, so that the force of the elastic member 75 to restore the deformation cannot pull the guide member 72, so that the hinge remains in an open state, and the elastic member 75 is prevented from automatically closing the hinge. At this time, the driving member 71 is located at the end of the abutting surface 722 away from the convex tooth 724.

[0062] When the door needs to be closed, an external force is applied to the door body, the door body begins to close, the hinge changes from the open state to the critical state, the driving member 71 contacts the abutting surface 722, and the guide member 72 is driven to rotate around the shaft. During the rotation process, the roller 73 contacts the shaft, so that the guide member 72 and the shaft are in rolling contact, reducing friction. The guide column 43 is located in the guide groove 725 and moves along the guide groove 725. When the door body is closed to the critical state, as shown in FIG. Figure 1 as well as Figure 8 As shown, at this time, the driving member 71 contacts the convex tooth 724. When the door body is further closed, the driving member 71 passes over the convex tooth 724 and falls into the groove 723. At this time, the restoring force of the elastic member 75 pulls the guide member 72 to move, so that the hinge moves to the closed state until the hinge is closed. Fig. 9 as well as Fig.10 shown.

[0063] During the closing process of the hinge, the damper 82 of the buffer assembly 80 abuts against the first connecting member 30, so that the speed of the hinge closing itself is reduced to prevent the user from being pinched.

[0064] The hinge of the present application realizes the self-closing function of the hinge by setting a supporting surface 722, a groove 723, a convex tooth 724 and a guide groove 725 on a part of the guide member 72. The hinge has few parts, a simple overall structure and a small size. The roller 73 is used as the driving member 71, and the hinge cost is low. The supporting surface 722 and the guide groove 725 are set on the same part, and the hinge transmission is more accurate. The supporting surface 722, the convex tooth 724 and the groove 723 have a smooth transition, and the external force required for the driving member 71 to pass over the convex tooth 724 is small, so the force application is small and the user experience is good. The buffer component 80 reduces the speed of the hinge self-closing to prevent the user from being pinched. The four connecting parts of the hinge enable the hinge to have a larger opening when it is opened, which is suitable for different usage scenarios. When closed, the first connecting part 30, the second connecting part 40, the third connecting part 50 and the fourth connecting part 60 are accommodated between the cabinet fixing seat 10 and the door fixing seat 20, so that the hinge is small in size and does not occupy space. The first connecting member 30, the second connecting member 40 and the fourth connecting member 60 are all double-plate structures. When the hinge is closing or opening, the first connecting member 30, the second connecting member 40, the third connecting member 50 and the fourth connecting member 60 are in different positions and form different gaps. At this time, the double-plate structure of the connecting member protects other components.

[0065] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A hinge with a self-closing function, comprising a door support, a cabinet support, a first connecting member, a second connecting member, a third connecting member and a fourth connecting member, wherein two ends of the first connecting member are rotatably connected to the door support and the fourth connecting member, respectively, two ends of the second connecting member are rotatably connected to the door support and the fourth connecting member, two ends of the third connecting member are rotatably connected to the cabinet support and the second connecting member, respectively, and the cabinet support is rotatably connected to the fourth connecting member, characterized in that: The hinge with self-closing function also includes a self-closing component, which includes a driving member, a guiding member and an elastic member. The driving member is rotatably mounted on the second connecting member, and the guiding member is movably mounted on the fourth connecting member. The second connecting member is provided with a guide column, and the guiding member is provided with a supporting surface, a groove, a convex tooth and a guiding groove. The convex tooth is located between the supporting surface and the groove, and the guide column is located in the guiding groove. Both ends of the elastic member are connected to the fourth connecting member and the guiding member respectively. When the hinge with the self-closing function is in an open state, the guide column contacts the end of the guide groove to keep the elastic member in a stretched state; When the hinge with the self-closing function moves from the open state to the critical state, the driving member contacts the abutting surface to drive the guide member to move relative to the fourth connecting member until the driving member contacts the convex tooth; When the hinge with the self-closing function moves from the critical state to the closed state, the driving member passes over the convex tooth and falls into the groove, and the elastic force of the elastic member drives the hinge with the self-closing function to move to the closed state.

2. The hinge with self-closing function according to claim 1, characterized in that: The fourth connecting member is provided with a ninth hinge hole, a tenth hinge hole and an eleventh hinge hole, the ninth hinge hole and the tenth hinge hole are respectively located at two ends of the fourth connecting member, the eleventh hinge hole is located between the ninth hinge hole and the tenth hinge hole, the cabinet support is rotatably connected to the fourth connecting member through the ninth hinge hole, the second connecting member is rotatably connected to the fourth connecting member through the eleventh hinge hole, and the first connecting member is rotatably connected to the fourth connecting member through the tenth hinge hole.

3. The hinge with self-closing function according to claim 1, characterized in that: The supporting surface is arc-shaped and faces the first connecting member.

4. The hinge with self-closing function according to claim 1, characterized in that: The groove is located at the bottom of the guide member, and the groove faces the second connecting member.

5. The hinge with self-closing function according to claim 4, characterized in that: The guide groove is in a curved shape and is located on a side of the guide member.

6. The hinge with self-closing function according to claim 4, characterized in that: The second connecting member includes a second plate body, and the guide column extends from the second plate body and is perpendicular to the second plate body.

7. The hinge with self-closing function according to claim 1, characterized in that: The fourth connecting member is rotatably connected to the second connecting member via a rotating shaft. The self-closing component also includes a roller, which is rotatably mounted on the guide member and is in rolling contact with the rotating shaft.

8. The hinge with self-closing function according to claim 7, characterized in that: The guide member is further provided with a rotation groove, the rotation groove abuts against the rotation shaft, and the guide member rotates around the rotation shaft.

9. The hinge with self-closing function according to claim 1, characterized in that: The self-closing component also includes a limiting shaft, which is installed on the guiding member. The fourth connecting member is provided with a sliding groove, and the end of the limiting shaft is located in the sliding groove.

10. The hinge with self-closing function according to claim 9, characterized in that: The slide groove is in a straight line shape.

11. The hinge with self-closing function according to claim 9, characterized in that: The elastic member is connected to the limiting shaft.

12. The hinge with self-closing function according to claim 1, characterized in that: The driving member is a roller.

13. The hinge with self-closing function according to claim 1, characterized in that: The hinge with the self-closing function further comprises a buffer assembly, which comprises a shell and a damper. The shell is mounted on the fourth connecting member, and the damper is mounted on the shell and contacts the first connecting member.

14. The hinge with self-closing function according to claim 1, characterized in that: The second connecting member is provided with a sixth hinge hole, a seventh hinge hole and an eighth hinge hole, the eighth hinge hole is located between the sixth hinge hole and the seventh hinge hole, the second connecting member is rotatably connected to the fourth connecting member through the sixth hinge hole, the second connecting member is rotatably connected to the door support through the seventh hinge hole, and the second connecting member is rotatably connected to the third connecting member through the eighth hinge hole.

Images