An adjustable thin profile cushion hinge and method of assembling the hinge

By designing an adjustable, thin-film buffer hinge, and utilizing the meshing transmission of the crank and buffer, as well as the limiting tooth structure, the problem of door panel rebound and wobbling in traditional hinges is solved, improving installation efficiency and user experience, and simplifying the manufacturing process.

CN122407026APending Publication Date: 2026-07-17QINGYUAN SACA PRECISION MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGYUAN SACA PRECISION MFG CO LTD
Filing Date
2026-06-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional two-stage force European hinges require excessive force to open the door during installation and use, which can cause the door to spring back, affecting the user experience. Furthermore, the door wobbles during installation, reducing efficiency, and the complex manufacturing process makes them difficult to maintain.

Method used

It adopts an adjustable, thin-film buffer hinge structure, including an external fixing component, a connecting component, and a transmission component. It utilizes the meshing transmission of the crank and the buffer, combined with a limiting tooth structure, to achieve uniform buffering and stable installation of the door panel. The manufacturing process is optimized by reducing the number of rivetings.

Benefits of technology

It solves the problem of hinge angle rebound when the door is opened forcefully, improves the smoothness of opening and closing the door and installation efficiency, enhances the user experience, and simplifies the manufacturing process.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides an adjustable, thin-type buffer hinge and its assembly method. The hinge includes an outer fixing component, a connecting component, and a transmission component. The transmission component is connected to a buffer component, which includes a rocker arm and a crank. The buffer component includes a buffer mounting base, a buffer, and a buffer push block. The rocker arm and the crank's swing ends are hinged to the outer fixing component via a U-shaped pin. The rocker arm's swing end has a limiting tooth for contacting the U-shaped pin surface. The rocker arm and the crank's positioning end are axially connected to the connecting component. The buffer push block has a driven tooth, and the crank has a main driven tooth. The main driven tooth meshes with the driven tooth, and the driven tooth moves in conjunction with the opening and closing of the outer fixing component, causing the buffer push block to move in conjunction with the buffer. The structure is simple, improving assembly efficiency and effectively solving the problem of angle rebound when a door is opened forcefully, enhancing the smoothness of opening and closing and improving the user experience.
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Description

Technical Field

[0001] This invention relates to the technical field of hinges, specifically to an adjustable, thin-type buffer hinge and a method for assembling the hinge. Background Technology

[0002] Traditional two-stage force European hinges already possess three-dimensional adjustment and buffering functions. They utilize the closing force generated when the user closes the door, which is transmitted to the hydraulic cylinder via a spring, crank, rocker arm, and connecting parts, thus achieving a buffering function. Currently, during actual installation and use of two-stage force hinges, the door opening force should not be too large. Under excessive opening force, existing two-stage force hinges will cause the door panel to spring back to between 60 and 70 degrees and hover, requiring the user to control the opening force and reopen the door before taking or placing items. This provides a poor user experience for new users. Furthermore, when installing traditional two-stage force European hinges on the side of a cabinet, the door panel will wobble, reducing installation efficiency. Moreover, current hinge manufacturing involves numerous riveting processes, making maintenance difficult. Therefore, this invention provides an adjustable, thin-film buffer hinge and its assembly method. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable thin buffer hinge and an assembly method for the hinge. The hinge has a simple structure, improves assembly efficiency, and effectively solves the problem of angle rebound when the door is opened forcefully. It enhances the stability of the product when opening and closing and improves the user experience of opening and closing the door.

[0004] The objective of this invention is achieved as follows: An adjustable, thin-type buffer hinge includes an outer fixing member, a connecting member, and a transmission member for opening and closing the outer fixing member on the connecting member. The transmission member is connected to a buffer member, wherein the transmission member includes a rocker arm and a crank, and the buffer member includes a buffer mounting base, a buffer, and a buffer push block. The swing ends of the rocker arm and the crank are hinged to the outer fixing member via U-shaped pins. The swing ends of the rocker arm are provided with limiting teeth for contacting the surface of the U-shaped pin. The positioning ends of the rocker arm and the crank are axially connected to the connecting member. The connecting member is provided with a buffer mounting base, and the buffer is installed in the buffer mounting base. The push rod of the buffer is connected to the buffer push block. The buffer push block is slidably mounted on the buffer mounting base and is provided with a driven gear. The crank is provided with a main drive gear. The main drive gear meshes with the driven gear and moves in conjunction with the opening and closing of the outer fixing member, thereby causing the buffer push block to move in conjunction with the buffer.

[0005] Based on the above optimization, the positioning ends of the rocker arm and the crank are respectively connected to the connecting component through the first-level connecting rivet and the second-level connecting rivet shaft. The limiting tooth can contact the U-shaped pin surface when the door panel is opened and closed with great force or when the door panel is installed.

[0006] Based on the above optimization, the transmission component also includes a spring, which is fitted onto the first-stage connecting rivet. The spring has an elastic handle and elastic arms distributed at both ends of the elastic handle. The buffer mounting seat has a clearance hole for positioning and connecting with the elastic handle. The inner sides of the crank are respectively provided with flaps for always being elastically connected with the elastic arms.

[0007] Based on the above optimization, the front ends of the rocker arm and crank are respectively provided with a first through pin hole and a second through pin hole for fitting and inserting with a U-shaped pin. The rear ends of the rocker arm and crank are respectively provided with a first through pin hole and a second through pin hole for connecting with the shafts of the first-stage connecting rivet and the second-stage connecting rivet. The limiting tooth is integrally formed on the rocker arm near the first through pin hole, and the main drive tooth is distributed around the second through pin hole and integrally formed with the crank.

[0008] Based on the above optimization, the external fixing member has an external fixing hole for fixing to the door panel, and the external fixing member is provided with a decorative cover. The decorative cover is provided with a decorative limiting block. The outer side of the external fixing member is provided with a decorative limiting groove. The decorative limiting groove and the decorative limiting block are matched and fastened so that the end face of the external fixing member is embedded in the decorative cover.

[0009] Based on the above optimization, the buffer mounting base is provided with a mounting cavity adapted to the buffer, and the bottom of the buffer mounting base is provided with a hinge hole, and the hinge hole is coaxially connected with a second-stage connecting rivet for the buffer mounting base to rotate around the axis.

[0010] Based on the above optimization, the buffer mounting base has a first guide groove and a second guide groove for linear sliding of the buffer push block. The first guide groove and the second guide groove are respectively distributed at the upper end and the lower end of the buffer mounting base. The buffer push block is provided with an upper slider and a lower slider for sliding connection with the first guide groove and the second guide groove. The first guide groove is provided with a movement limit block for limiting the movement position of the upper slider.

[0011] Based on the above optimization, the transmission teeth are linearly distributed on the buffer push block and integrally formed at the lower end of the buffer push block, and the buffer push block is provided with a limiting surface for restricting the movement position.

[0012] Based on the above optimization, the connecting components include an adjusting block, an adjusting middle plate, and an adjusting base plate. The adjusting block is hinged to the rocker arm and crank via first-stage connecting rivets and second-stage connecting rivets, respectively. The adjusting block is equipped with a gap adjusting screw for adjusting the gap installation position. One end of the gap adjusting screw is eccentrically connected to the adjusting middle plate, and the other end is threadedly connected to the adjusting middle plate. The adjusting base plate is slidably mounted on the bottom surface of the adjusting middle plate, and the adjusting base plate is equipped with mounting holes for mates with the cabinet. The adjusting middle plate is equipped with up-and-down adjusting screws for adjusting the up-and-down installation position. One end of the up-and-down adjusting screw is rotatably connected to the adjusting middle plate, and the other end is threadedly connected to the adjusting base plate.

[0013] Based on the above optimization, the connecting component further includes a connecting decorative cover, which is snapped onto the adjusting block. The adjusting block is provided with a cover position adjusting screw, one end of which is threaded onto the adjusting block. The adjusting plate has a U-shaped groove for engaging with the cover position adjusting screw.

[0014] A method for assembling a thin-type buffer hinge, comprising the adjustable thin-type buffer hinge, wherein the specific steps for using the buffer hinge are as follows: Step 1: Connect the external fastener to the door panel and install it with self-tapping screws that mate with the external fastening holes to lock the external fastener to the door panel together; Step 2: Use self-tapping screws to mate with the mounting holes to lock the adjusting base plate to the side of the cabinet; Step 3: Apply closing force to the door panel to make the limiting teeth act on the contact surface of the U-shaped pin, so that the door panel is suspended for a moment. This momentary state can complete the clearance compensation of the hole-shaft fit of the first connecting rivet, the second connecting rivet and the U-shaped pin. Step 4: After the momentary pause, the closing force is applied through the meshing of the main drive gear and the driven drive gear to compress the push rod of the buffer to fully close the door; similarly, the process of opening the door panel is consistent with the above mechanism.

[0015] The advantages of this invention are: 1) By adopting the transmission components of this structure, the main transmission gear of the crank and the driven transmission gear of the buffer push block mesh with each other, so that the door panel is buffered until it is closed, and the meshing force is converted into the compressive force of the buffer, making the buffer change more uniform and the transmission precision more precise, effectively solving the problem of angle rebound when the door is opened forcefully in the existing hinge.

[0016] 2) By adding a limiting tooth structure, the limiting tooth acts on the contact surface of the U-shaped pin during the strong opening and closing of the door panel, causing the door panel to stop momentarily, thereby offsetting part of the closing force. Furthermore, the gap between the hinge shaft and the hole is replenished until the limiting tooth completely disengages from the contact surface of the U-shaped pin. The meshing process of the main drive tooth and the driven drive tooth also offsets part of the closing force, making the closing smoother.

[0017] 3) By adding a limiting tooth structure, when installing the door panel, the limiting tooth will first contact the U-shaped contact surface. When no additional external force is applied to the external fixing component, the limiting tooth will keep in contact with the contact surface of the U-shaped pin, so that the rocker and crank will not rotate. This effectively solves the problem of shaking when users install the door panel and helps to improve the efficiency of door panel installation. Attached Figure Description

[0018] Figure 1 This is a front view of a preferred embodiment of the present invention.

[0019] Figure 2 This is a front view of a preferred embodiment of the present invention (with the connecting decorative cover removed).

[0020] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention (with the connecting decorative cover removed).

[0021] Figure 4 This is an exploded view of a preferred embodiment of the present invention.

[0022] Figure 5 This is a front view of the joystick according to a preferred embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the rocker arm according to a preferred embodiment of the present invention.

[0024] Figure 7 This is a front view of the crank in a preferred embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the crank structure according to a preferred embodiment of the present invention.

[0026] Figure 9 This is a front view of the buffer component according to a preferred embodiment of the present invention.

[0027] Figure 10 This is a cross-sectional view of the buffer component according to a preferred embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the structure of the buffer mounting base according to a preferred embodiment of the present invention.

[0029] Figure 12 This is a front view of the buffer mounting base according to a preferred embodiment of the present invention.

[0030] Figure 13 This is a cross-sectional view of the buffer mounting base according to a preferred embodiment of the present invention.

[0031] Figure 14 This is a schematic diagram of the structure of the buffer pusher block according to a preferred embodiment of the present invention.

[0032] Figure 15 This is a front view of the buffer push block according to a preferred embodiment of the present invention.

[0033] Figure 16 This is a cross-sectional view of the buffer pusher block according to a preferred embodiment of the present invention. Detailed Implementation

[0034] The present invention will now be further described with reference to the accompanying drawings.

[0035] According to the appendix Figures 1 to 16 As shown, the adjustable thin-type buffer hinge of the present invention includes an outer fixing member 1, a connecting member, and a transmission member for opening and closing the outer fixing member 1 on the connecting member. The transmission member is connected to a buffer member. The transmission member includes a rocker arm 2 and a crank 3. The buffer member includes a buffer mounting base 4, a buffer 5, and a buffer push block 6. The rocker arm 2 and the swing end of the crank 3 are hinged to the outer fixing member 1 via a U-shaped pin 7. The rocker arm 2 and the positioning end of the crank 3 are axially connected to the connecting member. The connecting member has a buffer mounting base 4. The buffer 5 is installed in the buffer mounting base 4, and the push rod of the buffer 5 is connected to the buffer push block 6. The buffer push block 6 is slidably mounted on the buffer mounting base 4 and has a driven gear 61. The crank 3 has a main drive gear 31. The main drive gear 31 meshes with the driven gear 61, and the driven gear 61 moves in conjunction with the opening and closing of the outer fixing member 1, so that the buffer push block 6 moves in conjunction with the buffer 5.

[0036] Reference Figures 1 to 16 As shown, in further detail, the positioning ends of the rocker arm 2 and the crank 3 are respectively connected to the connecting component by the first-stage connecting rivet 8 and the second-stage connecting rivet 9.

[0037] Furthermore, the transmission component also includes a spring 10, which is fitted onto the first-stage connecting rivet 8, and the spring 10 has an elastic handle 101 and elastic arms 102 distributed at both ends of the elastic handle 101. The buffer mounting base 4 has a clearance hole 46 for positioning and connecting with the elastic handle 101, and the inner sides of the crank 3 are respectively provided with flaps 32 for always being elastically connected with the elastic arms 102.

[0038] In addition, the front ends of the rocker arm 2 and the crank 3 are respectively provided with a first through-hole 22 and a second through-hole 33 for fitting and inserting with the U-shaped pin 7, and the rear ends of the rocker arm 2 and the crank 3 are respectively provided with a first through-hole 23 and a second through-hole 34 for shaft connection with the first-stage connecting rivet 8 and the second-stage connecting rivet 9. The main drive gear 31 is distributed around the second through-hole 34 and is integrally formed with the crank 3.

[0039] Furthermore, the drive teeth 61 are linearly distributed on the buffer push block 6 and integrally formed on the lower end of the buffer push block 6, and the buffer push block 6 is provided with a limiting surface 64 for limiting the movement position.

[0040] In practical applications, the external fixing member 1 has an external fixing hole for fixing to the door panel, and the external fixing member 1 is provided with a decorative cover 11. The decorative cover 11 is provided with a decorative limiting block, and the outer side of the external fixing member 1 is provided with a decorative limiting groove. The decorative limiting groove and the decorative limiting block are matched and fastened so that the end face of the external fixing member 1 is embedded in the decorative cover 11.

[0041] Reference Figures 1 to 16 As shown, further detailed, the buffer mounting base 4 is provided with a mounting cavity 41 adapted to the buffer 5, and the bottom of the buffer mounting base 4 is provided with a hinge hole 42. The hinge hole 42 is coaxially connected with a second-stage connecting rivet 9 for the buffer mounting base 4 to rotate around the axis.

[0042] Furthermore, the buffer mounting base 4 has a first guide groove 43 and a second guide groove 44 for linear sliding of the buffer push block 6. The first guide groove 43 and the second guide groove 44 are respectively distributed at the upper end and the lower end of the buffer mounting base 4. The buffer push block 6 is provided with an upper slider 62 and a lower slider 63 for sliding connection with the first guide groove 43 and the second guide groove 44. The first guide groove 43 is provided with a movement limit block 45 for limiting the movement position of the upper slider 62.

[0043] That is, the external fixing component 1 rotates clockwise around the U-shaped pin 7. The process is as follows: first, the user applies a closing force to the door panel, causing the external fixing component 1 to rotate clockwise around the U-shaped pin 7. The crank 3 rotates counterclockwise around the axis of the second-stage connecting rivet 9. The crank 3 is transmitted through the main transmission gear 31, causing the transmission gear 61 to move forward. The buffer push block 6 moves forward synchronously, and the push rod of the buffer 5 also moves forward, thus ensuring the door panel closes smoothly and continuously. By converting the meshing force into the compressive force of the buffer 5, the buffering changes become more uniform and the transmission precision is improved, thereby enhancing the user's door-closing experience. When the outer fixing component 1 rotates counterclockwise around the U-shaped pin 7, the process involves the door panel moving from a closed position to an open position. First, an opening force is applied to the door panel, causing the outer fixing component 1 to rotate counterclockwise around the U-shaped pin 7. The crank 3 rotates clockwise around the axis of the second-stage connecting rivet 9. The crank 3 is transmitted through the main drive gear 31, causing the driven gear 61 to move backward. Simultaneously, the buffer push block 6 moves backward, and the push rod of the buffer 5 also moves backward, thus buffering the door panel during opening until it is fully open. When the user forcefully opens the door, the push rod of the buffer 5 moves backward, offsetting some of the force and making the opening smoother and more even. When the user uses even greater force to open the door, the closing process is repeated when the door panel closes from its maximum opening angle, further offsetting some of the closing force. A portion of the closing force is also transmitted to the meshing transmission of the main drive gear 31 and the driven gear 61, making the user's experience of forcefully closing the door smoother and enhancing the user's door opening and closing experience.

[0044] Reference Figures 1 to 16 As shown, the swing end of the rocker arm 2 is provided with a limiting tooth 21 for contacting the surface of the U-shaped pin 7. The limiting tooth 21 can contact the surface of the U-shaped pin 7 when the door panel is opened or closed with force or when the door panel is installed.

[0045] Moreover, the limiting tooth 21 is integrally formed on the rocker 2 near the first through hole 22.

[0046] When the user slams the door shut, the limiting tooth 21 will contact the contact surface of the U-shaped pin 7, which will offset part of the closing force. In addition, the structure of the limiting tooth 21 can realize the clearance compensation between the shaft and the hole until the limiting tooth 21 completely disengages from the contact surface of the U-shaped pin 7. During this process, the meshing process of the main drive tooth 31 and the driven drive tooth 61 will also offset part of the closing force, thus making the closing smoother.

[0047] Furthermore, when the user installs the door panel, the limiting tooth 21 will first contact the contact surface of the U-shaped pin 7. When no external force is applied to the external fixing part 1, the limiting tooth 21 will remain in contact with the contact surface of the U-shaped pin 7, so that the rocker arm 2 and the crank 3 will not rotate, thereby preventing the user from shaking when installing the door panel, which helps to improve the installation efficiency of the door panel and ensures the user experience.

[0048] Reference Figures 1 to 16 As shown, further detailed, the connecting components include an adjusting block 12, an adjusting middle plate 13, and an adjusting base plate 14. The adjusting block 12 is hinged to the rocker arm 2 and crank 3 via first-stage connecting rivets 8 and second-stage connecting rivets 9, respectively. The adjusting block 12 is equipped with a gap adjusting screw 15 for adjusting the gap installation position. One end of the gap adjusting screw 15 is eccentrically connected to the adjusting middle plate 13, and the other end is threadedly connected to the adjusting middle plate 13. The adjusting base plate 14 is slidably mounted on the bottom surface of the adjusting middle plate 13, and the adjusting base plate 14 is equipped with mounting holes 141 for mounting to the cabinet. The adjusting middle plate 13 is equipped with up-and-down adjusting screws 16 for adjusting the up-and-down installation position. One end of the up-and-down adjusting screw 16 is rotatably connected to the adjusting middle plate 13, and the other end is threadedly connected to the adjusting base plate 14.

[0049] Furthermore, the connecting component also includes a connecting decorative cover 17, which is snapped onto the adjusting block 12. The adjusting block 12 is provided with a cover position adjusting screw 18, one end of which is threaded onto the adjusting block 12. The adjusting plate 13 has a U-shaped groove for engaging with the cover position adjusting screw 18. The installation position between the adjusting block 12 and the adjusting base plate 14 can be adjusted by rotating the cover position adjusting screw 18.

[0050] By combining the gap adjusting screw 15, the up and down adjusting screw 16, and the cover adjusting screw 18, adjustment in three directions can be achieved, which enhances assembly accuracy, reduces the number of rivets, and optimizes the processing technology.

[0051] Reference Figures 1 to 16 As shown, the assembly method of the thin-type buffer hinge of this structure includes the adjustable thin-type buffer hinge, and the specific steps for using the buffer hinge are as follows: Step 1: Connect the external fastener 1 to the door panel and install it with self-tapping screws that mate with the external fastening holes to lock the external fastener 1 to the door panel together; Step 2: Install the self-tapping screws into the mounting holes 141 to lock the adjusting base plate 14 onto the side of the cabinet. Step 3: Apply closing force to the door panel, so that the limiting tooth 21 acts on the contact surface of the U-shaped pin 7, causing the door panel to stop momentarily. This momentary state can complete the hole-shaft fit clearance compensation of the first-level connecting rivet 8, the second-level connecting rivet 9 and the U-shaped pin 7. Step 4: After the momentary pause, the closing force is engaged by the meshing of the main drive gear 31 and the driven gear 61 to compress the push rod of the buffer 5 to fully close the door; similarly, the opening process of the door panel is consistent with the mechanism of the closing process described above.

[0052] The hinge assembly method using this structure ensures that the door panel will not wobble during installation, which improves installation efficiency and guarantees the user experience.

[0053] The above specific embodiments are merely specific implementations of the present invention with better effects. Any structure that is the same as or equivalent to the adjustable thin buffer hinge and the assembly method of the hinge of the present invention is within the protection scope of the present invention.

Claims

1. An adjustable, thin-type buffer hinge, comprising an outer fixing member (1), a connecting member, and a transmission member for opening and closing the outer fixing member (1) on the connecting member, the transmission member being connected to a buffer member, characterized in that: The transmission component includes a rocker arm (2) and a crank (3). The buffer component includes a buffer mounting base (4), a buffer (5), and a buffer push block (6). The swing ends of the rocker arm (2) and the crank (3) are hinged to the outer fixing member (1) by a U-shaped pin (7). The swing end of the rocker arm (2) is provided with a limiting tooth (21) for contacting the surface of the U-shaped pin (7). The positioning ends of the rocker arm (2) and the crank (3) are axially connected to the connecting member. The connecting member is provided with a buffer mounting base (4). The buffer (5) is installed in the buffer mounting base (4), and the push rod of the buffer (5) is connected to the buffer push block (6). The buffer push block (6) is slidably mounted on the buffer mounting base (4), and the buffer push block (6) is provided with a driven gear (61). The crank (3) is provided with a main drive gear (31). The main drive gear (31) is engaged with the driven gear (61) and moves in conjunction with the opening and closing of the outer fixing member (1), so that the buffer push block (6) moves in conjunction with the buffer (5).

2. The adjustable, thin-film buffer hinge according to claim 1, characterized in that: The positioning ends of the rocker arm (2) and the crank (3) are respectively connected to the connecting component by the first-level connecting rivet (8) and the second-level connecting rivet (9). The limiting tooth (21) can contact the U-shaped pin (7) when the door panel is opened and closed with great force or when the door panel is installed.

3. The adjustable thin-type buffer hinge according to claim 2, characterized in that: The transmission component also includes a spring (10), which is fitted on the first-stage connecting rivet (8). The spring (10) has an elastic handle (101) and elastic arms (102) distributed at both ends of the elastic handle (101). The buffer mounting base (4) has a clearance hole (46) for positioning and connecting with the elastic handle (101). The inner sides of the crank (3) are respectively provided with flaps (32) for always being elastically connected with the elastic arms (102).

4. The adjustable thin-type buffer hinge according to claim 2, characterized in that: The front ends of the rocker arm (2) and the crank (3) are respectively provided with a first through-hole (22) and a second through-hole (33) for fitting and inserting with the U-shaped pin (7). The rear ends of the rocker arm (2) and the crank (3) are respectively provided with a first through-hole (23) and a second through-hole (34) for shaft connection with the first-stage connecting rivet (8) and the second-stage connecting rivet (9). The limiting tooth (21) is integrally formed on the rocker arm (2) near the first through-hole (22). The main drive tooth (31) is distributed around the second through-hole (34) and is integrally formed with the crank (3).

5. The adjustable thin-type buffer hinge according to claim 1, characterized in that: The external fixing member (1) has an external fixing hole for fixing to the door panel, and the external fixing member (1) is provided with a decorative cover (11). The decorative cover (11) is provided with a decorative limiting block. The outer side of the external fixing member (1) is provided with a decorative limiting groove. The decorative limiting groove and the decorative limiting block are matched and fastened together so that the end face of the external fixing member (1) is embedded in the decorative cover (11).

6. The adjustable thin-type buffer hinge according to claim 1, characterized in that: The buffer mounting base (4) is provided with a mounting cavity (41) adapted to the buffer (5). The bottom of the buffer mounting base (4) is provided with a hinge hole (42). The hinge hole (42) is coaxially connected with a second-stage connecting rivet (9) for the buffer mounting base (4) to rotate around the axis.

7. The adjustable thin-type buffer hinge according to claim 1, characterized in that: The buffer mounting base (4) has a first guide groove (43) and a second guide groove (44) for the linear sliding of the buffer push block (6). The first guide groove (43) and the second guide groove (44) are respectively distributed at the upper end and the lower end of the buffer mounting base (4). The buffer push block (6) is provided with an upper slider (62) and a lower slider (63) for sliding connection with the first guide groove (43) and the second guide groove (44). The first guide groove (43) is provided with a moving limit block (45) for limiting the movement position of the upper slider (62).

8. The adjustable thin-type buffer hinge according to claim 1, characterized in that: The drive teeth (61) are linearly distributed on the buffer push block (6) and integrally formed on the lower end of the buffer push block (6). The buffer push block (6) is provided with a limiting surface (64) for limiting the movement position.

9. The adjustable, thin-film buffer hinge according to claim 1, characterized in that: The connecting components include an adjusting block (12), an adjusting middle plate (13), and an adjusting base plate (14). The adjusting block (12) is hinged to the rocker arm (2) and the crank (3) respectively through a first-level connecting rivet (8) and a second-level connecting rivet (9). The adjusting block (12) is provided with a gap adjusting screw (15) for adjusting the gap installation position. One end of the gap adjusting screw (15) is eccentrically connected to the adjusting middle plate (13), and the other end of the gap adjusting screw (15) is threadedly connected to the adjusting middle plate (13). The adjusting base plate (14) is slidably mounted on the bottom surface of the adjusting middle plate (13), and the adjusting base plate (14) is provided with an installation hole (141) for matching the cabinet. The adjusting middle plate (13) is provided with an up-and-down adjusting screw (16) for adjusting the up-and-down installation position. One end of the up-and-down adjusting screw (16) is rotatably connected to the adjusting middle plate (13), and the other end of the up-and-down adjusting screw (16) is threadedly connected to the adjusting base plate (14).

10. The adjustable, thin-film buffer hinge according to claim 8, characterized in that: The connecting component also includes a connecting decorative cover (17), which is snapped onto the adjusting block (12), and the adjusting block (12) is provided with a cover position adjusting screw (18). One end of the cover position adjusting screw (18) is threadedly connected to the adjusting block (12), and the adjusting plate (13) has a U-shaped groove for engaging with the cover position adjusting screw (18).

11. A method for assembling a thin-type buffer hinge, characterized in that: Including the adjustable, thin-type buffer hinge according to any one of claims 1-9, the specific steps for using the buffer hinge are as follows: Step 1: Connect the external fastener (1) to the door panel and install it with self-tapping screws that match the external fastening holes to lock the external fastener (1) and the door panel together; Step 2: Use self-tapping screws to install the mounting holes (141) to lock the adjusting base plate (14) to the side of the cabinet; Step 3: Apply closing force to the door panel so that the limiting tooth (21) acts on the contact surface of the U-shaped pin (7), causing the door panel to be suspended momentarily. This momentary state can complete the clearance compensation of the hole-shaft fit of the first-level connecting rivet (8), the second-level connecting rivet (9) and the U-shaped pin (7). Step 4: After the momentary suspension, the closing force is engaged by the meshing of the main drive gear (31) and the driven gear (61) to compress the push rod of the buffer (5) to completely close the door; similarly, the opening process of the door panel is consistent with the above mechanism.