Folding door with door closing buffering function

Abstract

This invention relates to a folding door with a closing buffer function, comprising a hinge connected to a folding door assembly and a cabinet body. One end of the folding door assembly is hinged to the cabinet body via the hinge, and a connecting rod is provided between the other end of the folding door assembly and the cabinet body. The other end of the folding door assembly is connected to one end of the connecting rod, and the other end of the connecting rod is reciprocatingly slidably mounted on the cabinet body. When the folding door assembly is open on the cabinet body, the folding door assembly performs a folding action and drives the connecting rod to slide on the cabinet body. When the folding door assembly is closed on the cabinet body, the folding door assembly is in an unfolded state. By replacing the connecting rod with a rotating wheel device, the rotating wheel devices located at the top and bottom of the door body are eliminated, reducing production costs, simplifying installation, and improving assembly efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of folding cabinet door structures, specifically a folding door with a closing buffer function. Background Technology

[0002] Existing folding doors are generally sliding structures with long, narrow guide rails on the cabinet and rotating wheels on the door. For example, Chinese Patent No. ZL201910219412.7 discloses a gap-eliminating structure for a sliding folding door; the rotating wheel device includes a rotating wheel and a rotating wheel bracket, with the rotating wheel rotatably mounted on the bracket. Another example is a folding sliding door and window disclosed in Chinese Patent No. ZL201410168871.4. These sliding door structures all have rotating wheels at both the top and bottom of the door, resulting in high costs. Therefore, further improvements are needed. Summary of the Invention

[0003] The purpose of this invention is to provide a folding door with a closing buffer function. It eliminates the folding door structure on the cabinet by pushing and pulling, and instead uses a linkage to swing and slide on the cabinet to open and close the folding door assembly. The folding door assembly opens and closes on the outside of the cabinet, eliminating the need for rotating wheels at the top and bottom of the door, thus reducing production costs, simplifying installation, and improving assembly efficiency.

[0004] The objective of this invention is achieved as follows:

[0005] A folding door with a closing buffer function includes a hinge between the folding door assembly and the cabinet body. One end of the folding door assembly is hinged to the cabinet body, and the other end of the folding door assembly is connected to the cabinet body via a connecting rod. The other end of the folding door assembly is connected to one end of the connecting rod, and the other end of the connecting rod slides back and forth on the cabinet body. When the folding door assembly is open on the cabinet body, the folding door assembly folds and drives the connecting rod to slide on the cabinet body, and the angle between the folding door assembly and the cabinet body in the open state is greater than 90°. When the folding door assembly is closed on the cabinet body, the folding door assembly is in an unfolded state. By replacing the connecting rod with a rotating wheel device, the rotating wheel devices at the top and bottom of the door body are eliminated, reducing production costs, simplifying installation, and improving assembly efficiency.

[0006] The hinge includes a side panel hinge cup fixed to the cabinet body and a door hinge cup connected to one end of the folding door assembly; the side panel hinge cup and the door hinge cup are hinged together, and a first magnet and a second magnet are provided between the side panel hinge cup and the door hinge cup; when the folding door assembly closes on the cabinet body, the first magnet and the second magnet attract each other to realize that the folding door assembly automatically closes on the cabinet body. Through the mutual attraction of the two magnets, the folding door assembly will not open without appropriate external force, and when the folding door assembly is closed to the corresponding position angle, the two magnets attract each other to realize that the folding door assembly automatically closes on the cabinet body.

[0007] The hinge includes a side panel hinge cup fixedly connected to the cabinet body, and a door hinge cup hinged to the side panel hinge cup. The door hinge cup is connected to one end of the folding door assembly. The side panel hinge cup is equipped with a buffer and a reciprocating sliding slider. The door hinge cup is equipped with an action block. One end of the slider abuts against the telescopic end of the buffer. When the folding door assembly closes on the cabinet body, the folding door assembly drives the action block of the door hinge cup to drive the slider to move. The slider acts on the buffer to achieve a soft closing of the hinge and prevent the folding door assembly from hitting the cabinet body due to excessive closing force.

[0008] The folding door assembly includes a first door body and a second door body connected by hinges. The hinge includes a first leaf block connected to one of the door bodies and a second leaf block connected to the other door body. The first leaf block and the second leaf block are hinged together, and an elastic block assembly with elastic extension and retraction is provided between the first leaf block and the second leaf block. When the folding door assembly is folded open on the cabinet, the elastic block assembly is in a compressed state. When the folding door assembly is unfolded and closed on the cabinet, the elastic block assembly releases its elastic force and is in an unfolded state to drive the folding door assembly to close on the cabinet. This achieves automatic closing of the folding door on the cabinet by using the elastic force of the elastic block assembly to drive the folding door assembly to move in the direction of cabinet closure when closing.

[0009] One of the leaf blocks has a receiving groove, and the elastic block assembly includes an elastic block and a spring embedded in the receiving groove. One end of the spring acts elastically on the elastic block, and the other end of the spring acts elastically on the receiving groove. The other leaf block has a cam portion on the outer surface of the elastic block. When the folding door assembly is folded open on the cabinet, the cam portion acts on the elastic block to drive the elastic block to compress the spring. The cam portion has a first arc surface that acts on the elastic block, so that the spring has more force when the folding door assembly is closed.

[0010] Both the first and second door bodies include a door panel and several frame pieces disposed on the outer periphery of the door panel. A bent connector is provided at the corner connection between two adjacent frame pieces. Each frame piece is provided with a slot for inserting the connector. Each frame piece is provided with a clamping groove for holding the edge of the door panel, which facilitates the assembly of the folding door assembly. The door panel material can be wood or glass.

[0011] The cabinet is equipped with a guide rail, and the other end of the connecting rod slides back and forth on the guide rail. The other end of the connecting rod is equipped with a rolling element that rotates on the guide rail. The rolling element is equipped with a second arc surface that forms rolling contact with the guide rail, which facilitates the sliding of the connecting rod on the guide rail.

[0012] The rolling element includes a first rolling wheel that contacts the inner sidewall of the guide rail and a second rolling wheel that contacts the inner bottom wall of the guide rail.

[0013] By changing the length of the guide rails, the opening and closing stroke of the folding door assembly on the cabinet can be adjusted, allowing the folding door assembly to be fully opened on one side of the cabinet via connecting rods and hinges. After the two doors are folded, they can be opened at a large angle, making full use of the cabinet space without taking up much room, and making it easy to retrieve and put away objects inside the cabinet.

[0014] The front-to-back distance between the folding door assembly and the cabinet can be changed by altering the lever arm length of the connecting rod.

[0015] The connecting rod includes a first connecting rod for supporting and mounting the rolling element, and a second connecting rod for connecting to the cabinet. A rotating adjusting fastener is provided at the connection between the first and second connecting rods. The second connecting rod is provided with an adjusting guide groove, and the first connecting rod is provided with a guide. The first and second connecting rods are arranged in an upper and lower stacked manner, and the guide is inserted into the adjusting guide groove for limiting. The first and second connecting rods are fixedly connected by the adjusting fastener, and the extension length of the connecting rod is adjusted and the lever arm length of the connecting rod is changed by rotating the adjusting fastener. When adjusting the extension length of the connecting rod, the guide moves in the adjusting guide groove for relative front and rear limiting.

[0016] The guide rail includes a first arc groove and a second arc groove, and a linear groove is provided between the first arc groove and the second arc groove; the rolling element reciprocates along the first arc groove, the linear groove and the second arc groove during the opening and closing of the folding door assembly; the cabinet is provided with a cover for covering the guide rail and the rolling element, so that the rolling element is limited to rolling between the cover and the guide rail at the upper and lower limits;

[0017] The first arc-shaped groove is set on the first bottom cover, the second arc-shaped groove is set on the second bottom cover, and the linear groove is set on the third bottom cover; the first bottom cover and the second bottom cover are respectively set on the left or right side of the cabinet;

[0018] Both the first and second bottom covers are equipped with connecting base plates; the first and second bottom covers are respectively connected to their corresponding connecting base plates; the connecting base plates are separated from the corresponding bottom covers by breaking them to accommodate the opening of doors on the left and right sides of the cabinet.

[0019] Both the first and second bottom covers are equipped with connecting base plates to increase their length. No drilling is required during installation of the first and second bottom covers; they can be directly aligned with the two sides of the top panel of the cabinet. Once the first and second bottom covers are aligned, they can be installed. The length of the middle track (linear groove) can be freely cut to the width of different cabinets.

[0020] When installing the connecting base plate of the first or second bottom cover, it should correspond to the top edge of the cabinet.

[0021] The widening and lengthening of the first and / or second bottom covers allows them to be directly flush with the top edge of the cabinet and secured with screws during installation, eliminating the need for drilling. The purpose of widening and lengthening the first and / or second bottom covers is to use the two edges connecting the base plate as installation references, thus facilitating installation.

[0022] Both the first and second bottom covers have connecting base plates to increase their length and width. If the cabinet opens on the left side, the connecting base plate of the left bottom cover should be broken off and discarded. If the cabinet opens on the right side, the connecting base plate of the right bottom cover should be broken off and discarded.

[0023] A connecting block is provided at the connection between one end of the connecting rod and the folding door assembly. The connecting block is provided with an up-and-down adjustment part. The connecting block and the folding door assembly are connected by the up-and-down adjustment part. The up-and-down adjustment part is used to change the up-and-down position between the connecting block and the folding door assembly.

[0024] Alternatively, the connecting block is provided with a left-right adjustment part, and the connecting block and the folding door assembly are connected through the left-right adjustment part, so as to change the left-right position between the connecting block and the folding door assembly;

[0025] If installation errors occur, the folding door components can be adjusted up and down or left and right.

[0026] The cabinet is equipped with a positioning pin, which is set in the direction of movement of the folding door assembly opening and driving the linkage; when the folding door assembly is opened to the corresponding position angle, the linkage abuts against the positioning pin;

[0027] The angle of the folding door assembly when it is opened can be adjusted by changing the position of the positioning pin on the cabinet.

[0028] The beneficial effects of this invention are as follows:

[0029] The folding door structure on the cabinet is eliminated by pushing and pulling. Instead, a linkage swings and slides on the cabinet to open and close the folding door assembly. The folding door assembly opens and closes on the outside of the cabinet, eliminating the need for rotating wheels at the top and bottom of the door. This reduces production costs, simplifies installation, and improves assembly efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a folding door assembly closed on a cabinet according to an embodiment of the present invention.

[0031] Figure 2 This is an exploded structural diagram of the guide rail assembly of the cover and cabinet in one embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the structure of a folding door assembly opened on a cabinet according to an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the internal structure of a hinge according to an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the connection structure between the connecting rod and the folding door assembly according to an embodiment of the present invention.

[0035] Figure 6 This is a three-dimensional structural diagram of a hinge according to an embodiment of the present invention.

[0036] Figure 7 This is a three-dimensional structural diagram of another state of the hinge according to an embodiment of the present invention.

[0037] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of a hinge according to an embodiment of the present invention.

[0038] Figure 9 This is an exploded view of the assembly structure of a folding door component according to an embodiment of the present invention.

[0039] Figure 10 This is a three-dimensional structural diagram of a frame member according to an embodiment of the present invention.

[0040] Figure 11 This is a three-dimensional structural diagram of a connecting rod according to an embodiment of the present invention.

[0041] Figure 12 This is a schematic diagram of the three-dimensional cross-sectional structure of a connecting rod according to an embodiment of the present invention.

[0042] Figure 13 This is a schematic diagram of a structure in which a connecting base plate is provided on the bottom cover according to an embodiment of the present invention.

[0043] Figure 14 This is a schematic diagram of the broken connecting bottom plate of the cabinet with the right-side door opening, as shown in one embodiment of the present invention.

[0044] Figure 15 This is a schematic diagram of the broken structure of the connecting bottom plate of the left side of the cabinet, which has a door opening on the left side of the cabinet, according to an embodiment of the present invention.

[0045] Figure 16 This is a schematic diagram of the structure of the folding door assembly when the left side of the cabinet is opened, according to an embodiment of the present invention.

[0046] Figure 17 for Figure 16 Enlarged view of point A in the middle. Detailed Implementation

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0048] See Figures 1-17A folding door with a closing buffer function includes a hinge 3 between a folding door assembly 1 and a cabinet body 2. One end of the folding door assembly 1 is hinged to the cabinet body 2 via the hinge 3, and the other end of the folding door assembly 1 is connected to the cabinet body 2 via a connecting rod 4. The other end of the folding door assembly 1 is connected to one end of the connecting rod 4, and the other end of the connecting rod 4 is reciprocatingly slidably mounted on the cabinet body 2. When the folding door assembly 1 is open on the cabinet body 2, the folding door assembly 1 performs a folding action and drives the connecting rod 4 to slide on the cabinet body 2, and the angle between the folding door assembly 1 and the cabinet body 2 in the open state is greater than 90°. When the folding door assembly 1 is closed on the cabinet body 2, the folding door assembly 1 is in an unfolded state.

[0049] In this embodiment, the folding door assembly 1 can be opened to be in a state of relative parallelness with the cabinet body 2.

[0050] The hinge 3 includes a side panel hinge cup 5 fixed on the cabinet 2 and a door hinge cup 6 connected to one end of the folding door assembly 1; the side panel hinge cup 5 and the door hinge cup 6 are hinged together, and a first magnet 7 and a second magnet 8 are provided between the side panel hinge cup 5 and the door hinge cup 6; when the folding door assembly 1 performs a closing action on the cabinet 2, the first magnet 7 and the second magnet 8 attract each other to realize that the folding door assembly 1 automatically closes on the cabinet 2.

[0051] The hinge 3 includes a side panel hinge cup 5 fixedly connected to the cabinet 2, and a door hinge cup 6 hinged to the side panel hinge cup 5. The door hinge cup 6 is connected to one end of the folding door assembly 1. The side panel hinge cup 5 is provided with a buffer 9 and a reciprocating sliding slider 10. The door hinge cup 6 is provided with an action block 11. One end of the slider 10 abuts against the telescopic end of the buffer 9. When the folding door assembly 1 closes on the cabinet 2, the folding door assembly 1 drives the action block 11 of the door hinge cup 6 to drive the slider 10 to move. The slider 10 acts on the buffer 9 to achieve the buffered closing of the hinge 3.

[0052] In this embodiment, the side plate hinge cup 5 is provided with a limiting groove for the slider 10 to slide back and forth. The limiting groove is provided with a locking part. The slider 10 is provided with a sliding engagement part that cooperates with the locking part. The sliding engagement part is locked in place on the locking part to prevent the slider 10 from sliding out of the limiting groove when it slides.

[0053] In this embodiment, the side plate hinge cup 5 is provided with a fixing groove for fixing the buffer 9, and the fixing groove is connected to the limiting groove.

[0054] The folding door assembly 1 includes a first door body 13 and a second door body 14 connected by a hinge 12. The hinge 12 includes a first leaf block 15 connected to one of the door bodies and a second leaf block 16 connected to the other door body. The first leaf block 15 and the second leaf block 16 are hinged together, and an elastic block assembly 17 that can be elastically extended and retracted is provided between the first leaf block 15 and the second leaf block 16. When the folding door assembly 1 is folded open on the cabinet 2, the elastic block assembly 17 is in a compressed state. When the folding door assembly 1 is unfolded and closed on the cabinet 2, the elastic block assembly 17 releases its elastic force and is in an unfolded state to drive the folding door assembly 1 to close on the cabinet 2.

[0055] One of the page blocks has a receiving groove 18. The elastic block assembly 17 includes an elastic block 19 and a spring 20 embedded in the receiving groove 18. One end of the spring 20 acts elastically on the elastic block 19, and the other end of the spring 20 acts elastically on the receiving groove 18. The other page block has a cam portion 21 on the outer surface of the elastic block 19. When the folding door assembly 1 is folded open on the cabinet 2, the cam portion 21 acts on the elastic block 19 to drive the elastic block 19 to compress the spring 20. The cam portion 21 has a first arc surface that acts on the elastic block 19.

[0056] In this embodiment, the elastic block 19 is provided with a groove for accommodating the mounting spring 20.

[0057] In this embodiment, the first page block 15 and the second page block 16 are hinged together by a pivot.

[0058] Both the first door body 13 and the second door body 14 include a door panel 22 and several frame pieces 23 disposed on the outer periphery of the door panel 22. A bent connector 24 is provided at the corner connection between two adjacent frame pieces 23. Each frame piece 23 is provided with a slot 25 for inserting the connector 24. Each frame piece 23 is provided with a clamping groove 26 for clamping the edge of the door panel 22.

[0059] In this embodiment, the frame member 23 is fixedly connected to the corner bend connector 24 by screws.

[0060] The cabinet 2 is provided with a guide rail 27, and the other end of the connecting rod 4 slides back and forth on the guide rail 27. The other end of the connecting rod 4 is provided with a rolling element 28 that rotates on the guide rail 27. The rolling element 28 is provided with a second arc surface that forms rolling contact with the guide rail 27.

[0061] The rolling element 28 includes a first rolling wheel 35 that contacts the inner sidewall of the guide rail 27, and a second rolling wheel 36 that contacts the inner bottom wall of the guide rail 27.

[0062] The opening and closing stroke of the folding door assembly 1 on the cabinet 2 is adjusted by changing the length of the guide rail 27.

[0063] The front-to-back distance between the folding door assembly 1 and the cabinet 2 can be changed by altering the lever arm length of the connecting rod 4.

[0064] In this embodiment, the hinge 3 is also provided with a three-dimensional adjustment structure for adjusting the relative vertical, horizontal, and front-back positions between the door and the cabinet. These are existing technologies and will not be described in detail here.

[0065] The connecting rod 4 includes a first connecting rod 37 for supporting and mounting the rolling element 28, and a second connecting rod 38 connected to the cabinet 2. A rotating adjusting fastener 39 is provided at the connection between the first connecting rod 37 and the second connecting rod 38. The second connecting rod 38 is provided with an adjusting guide groove 40, and the first connecting rod 37 is provided with a guide element 41. The first connecting rod 37 and the second connecting rod 38 are arranged in an upper and lower stacked manner, and the guide element 41 is inserted into the adjusting guide groove 40 for a limiting position. The first connecting rod 37 and the second connecting rod 38 are fixedly connected by the adjusting fastener 39, and the extension length of the connecting rod 4 and the lever arm length of the connecting rod 4 are adjusted by rotating the adjusting fastener 39. When adjusting the extension length of the connecting rod 4, the guide element 41 moves relatively forward and backward in the adjusting guide groove 40 for a limiting position.

[0066] In this embodiment, one end of the first connecting rod 37 is bent to form a plug-in block 42, and one end of the second connecting rod 38 is bent. The bending directions of the first connecting rod 37 and the second connecting rod 38 are opposite. After being bent, one end of the second connecting rod 38 extends laterally. A limiting notch 43 is provided on the second connecting rod 38. The first connecting rod 37 is supported on the laterally extended portion of the second connecting rod 38, and the plug-in block 42 of the first connecting rod 37 is inserted into the limiting notch 43. The adjusting fastener 39 passes through the bends of the first connecting rod 37 and the second connecting rod 38 to fix the first connecting rod 37 and the second connecting rod 38 in a fixed connection. When adjusting the extension length of the connecting rod 4, the adjusting fastener 39 is rotated, and the plug-in block 42 moves relative to the front and rear limiting positions within the limiting notch 43. The adjusting fastener 39 is an adjusting screw.

[0067] The guide rail 27 includes a first arc groove 34 and a second arc groove 29, and a linear groove 30 is provided between the first arc groove 34 and the second arc groove 29; the rolling element 28 reciprocates along the first arc groove 34, the linear groove 30 and the second arc groove 29 during the opening and closing of the folding door assembly 1; the cabinet body 2 is provided with a cover 31 for covering the guide rail 27 and the rolling element 28.

[0068] The first arc-shaped groove 34 is provided on the first bottom cover 44, the second arc-shaped groove 29 is provided on the second bottom cover 45, and the linear groove 30 is provided on the third bottom cover 46; the first bottom cover 44 and the second bottom cover 45 are respectively provided on the left or right side of the cabinet body 2.

[0069] Both the first bottom cover 44 and the second bottom cover 45 are provided with connecting base plates 47; the first bottom cover 44 and the second bottom cover 45 are respectively provided with connecting parts between their corresponding connecting base plates 47; the connecting base plates 47 are separated from the corresponding bottom covers by breaking to accommodate the opening of doors on the left and right sides of the cabinet 2.

[0070] When the connecting base plate 47 of the first bottom cover 44 or the second bottom cover 45 is installed, it corresponds to the top edge of the cabinet 2.

[0071] In this embodiment, the guide rail 27 is disposed on the top of the cabinet 2.

[0072] In this embodiment, the top of the cabinet 2 is provided with a first bottom cover and a second bottom cover, and a third bottom cover is provided between the first bottom cover and the second bottom cover. A first arc-shaped groove 34 is provided on the first bottom cover, a second arc-shaped groove 29 is provided on the second bottom cover, and a linear groove 30 is provided on the third bottom cover. The first bottom cover and the second bottom cover are provided with positioning studs, and the cover body 31 is provided with screw holes corresponding to the positioning studs. In this way, the cover body 31 is fixed to the first bottom cover and the second bottom cover by screws.

[0073] In this embodiment, the cover 31 can be configured as a single piece of cover, or the cover 31 can be configured as three covers, which respectively cover the first bottom cover, the second bottom cover, and the third bottom cover.

[0074] In this embodiment, the rolling element 28 is rotatably mounted on the connecting rod 4 via a rotating shaft.

[0075] A connecting block 32 is provided at the connection point between one end of the connecting rod 4 and the folding door assembly 1. The connecting block 32 is provided with an up-down adjustment part 33. The connecting block 32 and the folding door assembly 1 are connected by the up-down adjustment part 33, and the up-down position between the connecting block 32 and the folding door assembly 1 can be changed by the up-down adjustment part 33.

[0076] One end of the connecting rod 4 is connected to one of the door bodies of the folding door assembly 1 via the connecting block 32; the connecting block 32 is connected to one of the door bodies of the folding door assembly 1 via screws.

[0077] In this embodiment, the connecting block 32 is provided with a strip-shaped hole forming the up-down adjustment part 33; or, the connecting block 32 is provided with a plurality of fixing holes forming the up-down adjustment part 33.

[0078] In this embodiment, the connecting block 32 is located on one side of one of the door bodies of the folding door assembly 1.

[0079] Alternatively, the connecting block 32 is provided with a left-right adjustment part 48, and the connecting block 32 is connected to the folding door assembly 1 through the left-right adjustment part 48, so that the left-right position between the connecting block 32 and the folding door assembly 1 can be changed through the left-right adjustment part 48.

[0080] In this embodiment, a connecting block 32 with a left-right adjustment part 48 is fixed on the top of one of the door bodies of the folding door assembly 1.

[0081] In this embodiment, the connecting block 32 is provided with an elliptical groove forming the left and right adjustment part 48, or the connecting block 32 is provided with a plurality of mounting holes forming the left and right adjustment part 48, and the mounting holes are fixedly connected to the folding door assembly 1 by through screws.

[0082] The cabinet 2 is provided with a positioning pin 49, which is set in the direction of movement of the folding door assembly 1 opening and driving the connecting rod 4; when the folding door assembly 1 is opened to the corresponding position angle, the connecting rod 4 abuts against the positioning pin 49.

[0083] The angle of the folding door assembly 1 when it is opened can be adjusted by changing the position of the positioning pin 49 on the cabinet 2.

[0084] In this embodiment, the positioning pin 49 is fixed to the top of the cabinet 2 by screws.

[0085] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A folding door with a closing buffer function, comprising a folding door assembly (1), a cabinet body (2), and a hinge (3) disposed between the two, characterized in that: One end of the folding door assembly (1) is hinged to the cabinet (2) via a hinge (3), and the other end of the folding door assembly (1) is connected to the cabinet (2) via a connecting rod (4); the other end of the folding door assembly (1) is connected to one end of the connecting rod (4), and the other end of the connecting rod (4) is slidably mounted on the cabinet (2); when the folding door assembly (1) is open on the cabinet (2), the folding door assembly (1) performs a folding action and drives the connecting rod (4) to slide on the cabinet (2), and the angle between the folding door assembly (1) and the cabinet (2) in the open state is greater than 90°; when the folding door assembly (1) is closed on the cabinet (2), the folding door assembly (1) is in an unfolded state; The hinge (3) includes a side panel hinge cup (5) fixed on the cabinet (2) and a door hinge cup (6) connected to one end of the folding door assembly (1); the side panel hinge cup (5) and the door hinge cup (6) are hinged together, and a first magnet (7) and a second magnet (8) are provided between the side panel hinge cup (5) and the door hinge cup (6); when the folding door assembly (1) performs a closing action on the cabinet (2), the first magnet (7) and the second magnet (8) attract each other to realize that the folding door assembly (1) automatically closes on the cabinet (2); The hinge (3) includes a side panel hinge cup (5) fixedly connected to the cabinet (2) and a door hinge cup (6) hinged to the side panel hinge cup (5). The door hinge cup (6) is connected to one end of the folding door assembly (1). The side panel hinge cup (5) is provided with a buffer (9) and a sliding block (10) that slides back and forth. The door hinge cup (6) is provided with an action block (11). One end of the sliding block (10) abuts against the telescopic end of the buffer (9). When the folding door assembly (1) closes on the cabinet (2), the folding door assembly (1) drives the action block (11) of the door hinge cup (6) to drive the sliding block (10) to move. The sliding block (10) acts on the buffer (9) to achieve the buffer closing of the hinge (3). The opening and closing stroke of the folding door assembly (1) on the cabinet (2) is adjusted by changing the length of the guide rail (27). The front-to-back distance between the folding door assembly (1) and the cabinet (2) is changed by altering the lever arm length of the connecting rod (4); the connecting rod (4) includes a first connecting rod (37) for supporting and mounting the rolling element (28), and a second connecting rod (38) connected to the cabinet (2); a rotating adjusting fastener (39) is provided at the connection between the first connecting rod (37) and the second connecting rod (38); the second connecting rod (38) is provided with an adjusting guide groove (40), and the first connecting rod (37) is provided with a guide element (49). 1) The first link (37) and the second link (38) are arranged in an upper and lower stacked manner, and the guide (41) is inserted into the adjustment guide groove (40) for limiting. The first link (37) and the second link (38) are fixedly connected by the adjusting fastener (39), and the extension length of the link (4) is adjusted and the lever arm length of the link (4) is changed by rotating the adjusting fastener (39). When adjusting the extension length of the link (4), the guide (41) moves in the adjustment guide groove (40) relative to the front and rear limits.

2. A folding door with a closing buffer function according to claim 1, characterized in that: The folding door assembly (1) includes a first door body (13) and a second door body (14) connected by a hinge (12). The hinge (12) includes a first leaf block (15) connected to one of the door bodies and a second leaf block (16) connected to the other door body. The first leaf block (15) and the second leaf block (16) are hinged together, and an elastic block assembly (17) that can be elastically extended and retracted is provided between the first leaf block (15) and the second leaf block (16). When the folding door assembly (1) is folded open on the cabinet (2), the elastic block assembly (17) is in a compressed state. When the folding door assembly (1) unfolds and closes on the cabinet (2), the elastic block assembly (17) releases its elastic force and is in the unfolded state to drive the folding door assembly (1) to close on the cabinet (2).

3. A folding door with a closing buffer function according to claim 2, characterized in that: One of the pages is provided with a receiving groove (18), and the elastic block assembly (17) includes an elastic block (19) and a spring (20) embedded in the receiving groove (18). One end of the spring (20) acts elastically on the elastic block (19), and the other end of the spring (20) acts elastically on the receiving groove (18). The other page is provided with a cam part (21) on the outer surface of the elastic block (19). When the folding door assembly (1) is folded open on the cabinet (2), the cam part (21) acts on the elastic block (19) to drive the elastic block (19) to squeeze the spring (20). The cam part (21) is provided with a first arc surface that acts on the elastic block (19).

4. A folding door with a closing buffer function according to claim 2, characterized in that: Both the first door body (13) and the second door body (14) include a door panel (22) and several frame pieces (23) set on the outer periphery of the door panel (22). A bent connector (24) is provided at the corner connection between two adjacent frame pieces (23). Each frame piece (23) is provided with a slot (25) for inserting the connector (24); each frame piece (23) is provided with a clamping groove (26) for clamping the edge of the door panel (22).

5. A folding door with a closing buffer function according to claim 1, characterized in that: The cabinet (2) is provided with a guide rail (27), and the other end of the connecting rod (4) slides back and forth on the guide rail (27). The other end of the connecting rod (4) is provided with a rolling element (28) that rotates on the guide rail (27). The rolling element (28) is provided with a second arc surface that forms a rolling contact with the guide rail (27). The rolling element (28) includes a first rolling wheel (35) that contacts the inner side wall of the guide rail (27) and a second rolling wheel (36) that contacts the inner bottom wall of the guide rail (27).

6. A folding door with a closing buffer function according to claim 5, characterized in that: The guide rail (27) includes a first arc groove (34) and a second arc groove (29), and a linear groove (30) is provided between the first arc groove (34) and the second arc groove (29); the rolling element (28) reciprocates along the first arc groove (34), the linear groove (30), and the second arc groove (29) during the opening and closing of the folding door assembly (1); the cabinet (2) is provided with a cover (31) for covering the guide rail (27) and the rolling element (28); The first arc groove (34) is set on the first bottom cover (44), the second arc groove (29) is set on the second bottom cover (45), and the linear groove (30) is set on the third bottom cover (46); the first bottom cover (44) and the second bottom cover (45) are respectively set on the left or right side of the cabinet (2); Both the first bottom cover (44) and the second bottom cover (45) are provided with connecting bottom plates (47); the first bottom cover (44) and the second bottom cover (45) are respectively provided with connecting parts between their corresponding connecting bottom plates (47); the connecting bottom plates (47) are separated from the corresponding bottom covers by breaking them to accommodate the opening of doors on the left and right sides of the cabinet (2); When the connecting base plate (47) of the first bottom cover (44) or the second bottom cover (45) is installed, it corresponds to the top edge of the cabinet (2).

7. A folding door with a closing buffer function according to claim 1, characterized in that: A connecting block (32) is provided at the connection point between one end of the connecting rod (4) and the folding door assembly (1). The connecting block (32) is provided with an up-down adjustment part (33). The connecting block (32) and the folding door assembly (1) are connected by the up-down adjustment part (33), and the up-down position between the connecting block (32) and the folding door assembly (1) can be changed by the up-down adjustment part (33); or, the connecting block (32) is provided with a left-right adjustment part (48), and the connecting block (32) and the folding door assembly (1) are connected by the left-right adjustment part (48). 48) Connect, and change the left and right position between the connecting block (32) and the folding door assembly (1) by adjusting the left and right parts (48); the cabinet (2) is provided with a positioning pin (49), which is set in the direction of movement of the folding door assembly (1) opening and driving the connecting rod (4); when the folding door assembly (1) is opened to the corresponding position angle, the connecting rod (4) abuts against the positioning pin (49); by changing the position of the positioning pin (49) on the cabinet (2), the angle position of the folding door assembly (1) when it is opened can be adjusted.

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