Stepless buffering adjustment damping hinge

Abstract

The invention belongs to the technical field of hinge devices, and particularly relates to a stepless buffering adjusting damping hinge. According to the stepless buffering adjusting damping hinge, the stepless buffering adjusting mechanism comprising the adjusting cover and the adjusting swing arm is arranged, and the pushing piece on the adjusting swing arm is matched with the arc-shaped positioning hole with the positioning tooth groove in the adjusting cover, so that a user can continuously swing in the arc-shaped positioning hole by controlling the adjusting swing arm; the telescopic stroke of the buffer in the cup cavity is flexibly and steplessly adjusted, so that the elastic driving assistance when the hinge is relatively opened and the buffering damping when the hinge is relatively closed are adjusted, the buffering strength and stroke are personalized and continuously adjustable, the smoothness, quietness and use experience in the opening and closing process of a furniture door plate are remarkably improved, and the service life of the furniture door plate is prolonged. Meanwhile, the impact loss to the cabinet body and the door plate is effectively reduced, the applicability of the hinge is enhanced, and the service life of the hinge is prolonged.

Description

Technical Field

[0001] This invention belongs to the technical field of hinge devices, specifically relating to a stepless buffer adjustable damping hinge. Background Technology

[0002] Cup-type damping hinges are widely used in furniture such as cabinets and wardrobes due to their sturdy structure and strong load-bearing capacity. To improve the user experience, modern furniture generally requires hinges to have a damping function to achieve a quiet and smooth closing effect and reduce impact damage. Currently, most mainstream cup-type damping hinges on the market adopt a structure with an internal damper. However, the damping assistance effect of these products is usually only available in the fully open or fully closed state, and cannot infinitely adjust the damper's damping stroke according to user needs, thus failing to achieve the adjustment of the elastic drive stroke of the damping hinge when it is relatively open and the damping stroke when it is relatively closed. Summary of the Invention

[0003] The purpose of this invention is to overcome the problem that existing cup-type buffer hinges cannot infinitely adjust the buffer stroke of the buffer, and to provide an infinitely adjustable buffer hinge that can adjust the elastic drive stroke of the relatively open damping hinge and the buffer stroke when the damping hinge is relatively closed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The infinitely variable damping hinge includes a hinge cup, a hinge seat, a damper, and an infinitely variable damping adjustment mechanism.

[0005] A hinged cup with a cup cavity that opens on the upper side.

[0006] The hinge seat extends into the cup cavity via a hinge arm and is rotatably connected to the hinge cup. An elastic element is provided between the hinge seat and the hinge cup.

[0007] The buffer is slidably mounted in the cup cavity and its rear abuts against the hinge arm for transmission engagement. It is used to provide assistance when the damping hinge is relatively open and to provide a buffering effect when the damping hinge is relatively closed. The buffer has an adjustment push top on its side.

[0008] The stepless buffer adjustment mechanism includes an adjustment cover and an adjustment swing arm. The adjustment cover is used to close the opening of the cup cavity. One end of the adjustment swing arm is rotatably connected to the adjustment cover. The other side of the adjustment swing arm is provided with a pusher extending to the bottom and abutting against the rear side of the adjustment pusher. The adjustment cover is provided with an arc-shaped positioning hole and an arc-shaped clearance hole that cooperates with the pusher. The inner wall of the arc-shaped positioning hole is provided with several positioning grooves arranged along the arc direction on the outer arc wall. The pusher is provided with a locking protrusion that cooperates with several positioning grooves. By controlling the adjustment swing arm to swing relative to the arc-shaped positioning hole, the extension and retraction stroke of the buffer is adjusted, so as to realize the elastic drive assistance of the adjustment hinge when it is relatively open and the buffer damping when it is relatively closed.

[0009] Compared with existing technologies, the stepless buffer adjustment damping hinge of the present invention, by setting up a stepless buffer adjustment mechanism including an adjustment cover and an adjustment arm, utilizes the interaction between the pusher on the adjustment arm and the arc-shaped positioning hole with positioning teeth on the adjustment cover. This allows the user to flexibly and steplessly adjust the extension and retraction stroke of the buffer in the cup cavity by continuously swinging the adjustment arm within the arc-shaped positioning hole. This adjusts the elastic drive assistance of the hinge when it is relatively open and the buffer damping when it is relatively closed, realizing personalized and continuously adjustable buffering force and stroke. This significantly improves the smoothness, quietness and user experience of the opening and closing process of furniture doors, while effectively reducing impact damage to the cabinet and door panels, and enhancing the applicability and service life of the hinge.

[0010] Furthermore, the adjusting cover is installed on the hinge cup via a snap-fit ​​structure; one end of the adjusting arm has a shaft hole, and the adjusting cover has a downwardly extending rotating shaft corresponding to the shaft hole. The shaft hole is fitted onto the rotating shaft, and the hinge cup has an abutment platform on its corresponding side corresponding to the rotating shaft. When the adjusting cover is installed relative to the hinge cup, the lower end of the rotating shaft abuts against the abutment platform, thereby limiting the shaft hole from disengaging from the rotating shaft. With this configuration, the adjusting cover is conveniently installed on the hinge cup using a snap-fit ​​structure, and a shaft hole is provided at the end of the adjusting arm to engage with the rotating shaft of the adjusting cover. At the same time, the abutment platform on the side of the hinge cup abuts and limits the lower end of the rotating shaft when it is installed. This integrated linkage structure not only ensures the stability of the connection between the adjusting cover and the hinge cup, but more importantly, it effectively limits the shaft hole of the adjusting arm from accidentally disengaging from the rotating shaft, thereby improving the structural reliability, durability, and ease of installation and maintenance of the entire stepless buffer adjustment mechanism under frequent operation.

[0011] Furthermore, the adjusting cover is provided with a limiting edge on the upper side of the plurality of positioning grooves. The limiting edge is used to limit the locking protrusion at the end of the adjusting arm from disengaging from the upper side of the positioning groove. By setting the limiting edge on the upper side of the plurality of positioning grooves of the adjusting cover and making it form an upward limiting constraint on the locking protrusion at the end of the adjusting arm, this structure can effectively prevent the locking protrusion from accidentally disengaging upward from the positioning groove under external vibration or abnormal operation, thereby ensuring the locking stability and reliability of the adjusting arm at any adjustment position, and enhancing the anti-interference capability and long-term positioning accuracy of the stepless buffer adjustment mechanism.

[0012] Furthermore, the upper side of the adjusting arm is provided with an operating part for manipulating the relative swing of the adjusting arm; with this configuration, by providing an operating part specifically for hand or tool contact and force application on the upper side of the adjusting arm, the user can directly and conveniently operate the adjusting arm for precise relative swing without the need for other tools, thereby achieving stepless adjustment of the buffer stroke. This design significantly improves the product's adjustment convenience and user-friendliness, and enhances the user experience.

[0013] Furthermore, when the locking protrusion of the adjusting arm swings to one end of the arc-shaped positioning hole, the extension and retraction stroke of the buffer is adjusted to the maximum state, and the adjusting arm and the length direction of the buffer remain perpendicular to each other. By setting the adjusting arm to swing to one end of the arc-shaped positioning hole as the maximum extension and retraction stroke of the buffer, and simultaneously keeping the adjusting arm perpendicular to the length direction of the buffer, this structure not only visually indicates the limit adjustment position of the maximum stroke, but also utilizes the optimal torque of the arm pushing the buffer in the perpendicular state, ensuring the stability and efficiency of the mechanism transmission under maximum buffering or assistance requirements, and improving the clarity of adjustment and the controllability of operation.

[0014] Furthermore, the adjusting cover is provided with downwardly extending abutment seats on both sides of the buffer. When the adjusting cover is installed relative to the hinge cup, the abutment seats abut against the bottom wall of the cup cavity. By setting the adjusting cover with downwardly extending abutment seats on both sides of the buffer, and ensuring that the abutment seats form a stable abutment with the bottom wall of the cup cavity when the adjusting cover is installed, this structure can effectively disperse the force from the buffer during operation, enhance the overall compressive strength and installation stability of the adjusting cover, prevent deformation or displacement due to long-term stress, and thus ensure the long-term accurate and reliable operation of the continuously variable buffer adjustment mechanism connected to it.

[0015] Furthermore, the abutment seat near the top of the adjusting push is provided with an inwardly extending guide seat, forming a guide groove between the guide seat and the cover plate of the adjusting cover, and the top of the adjusting push is placed in the guide groove. With this arrangement, by providing an inwardly extending guide seat on the abutment seat near the top of the adjusting push that cooperates with the cover plate of the adjusting cover to form a guide groove, and precisely restricting the top of the buffer's adjusting push within the guide groove, this structure provides stable and precise linear guidance for the buffer's back-and-forth sliding during adjustment and operation, effectively preventing the buffer from tilting or jamming due to uneven force, thereby ensuring the smoothness of the buffer stroke adjustment and the reliability of the operation, and improving the overall service life and performance consistency of the product.

[0016] Furthermore, the elastic element is provided in two parts, namely torsion springs located on both sides of the hinge cup.

[0017] Furthermore, the two torsion springs are respectively located on the outer side of the hinge cup. The inner walls of the cup cavity are provided with avoidance openings that connect to the outer side. The hinge cup is provided with an insertion interface on the front side of the torsion spring and the avoidance opening. One of the spring arms of the torsion spring is inserted into the insertion interface, and the other spring arm of the torsion spring passes through the avoidance opening and abuts against the hinge arm. By setting the two torsion springs on the outer side of the hinge cup and cleverly utilizing the avoidance opening on the inner wall of the cup cavity and the insertion interface on the hinge cup, one spring arm of the torsion spring can be inserted into the insertion interface to achieve stable positioning, while the other spring arm passes through the avoidance opening and directly abuts against the hinge arm. This structure effectively transfers the torsional potential energy of the torsion spring to the hinge arm, which not only provides a balanced and lasting reset assistance for the rotation of the damping hinge and enhances the smoothness of opening and closing, but also simplifies the internal layout of the cup cavity by placing the torsion spring externally, reduces spatial interference to the buffer and adjustment mechanism, and improves the compactness and ease of maintenance of the overall structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a continuously variable damping hinge.

[0019] Figure 2 This is a schematic diagram of the bottom of a continuously variable damping hinge.

[0020] Figure 3 This is a schematic diagram of the hinge cup and the stepless buffer adjustment mechanism.

[0021] Figure 4 This is an exploded view of the hinge cup and the stepless buffer adjustment mechanism.

[0022] Figure 5 This is a schematic diagram of the adjusting cover and the adjusting arm.

[0023] Figure 6 This is a schematic diagram of the adjustable cover.

[0024] Labeling Explanation: 1. Hinge Cup; 2. Hinge Seat; 3. Buffer; 4. Infinitely Variable Buffer Adjustment Mechanism; 11. Cup Groove Body; 12. Connecting Edge; 13. Cup Cavity; 21. Hinge Arm; 31. Adjustment Push Top; 32. Buffer Cylinder; 33. Push Rod; 41. Adjustment Cover; 42. Adjustment Swing Arm; 42. Push Top Part; 421. Arc-Shaped Clearance Hole; 43. Positioning Tooth Groove; 44. Snap Protrusion; 422. Snap Groove; 14. Snap Buckle; 141. Shaft Hole; 423. Rotating Shaft; 411. Abutment Platform; 15. Limiting Edge; 45. Operating Part; 46. Abutment Seat; 47. Arc-Shaped Fitting Part; 471. Guide Seat; 472. Guide Groove; 473. Torsion Spring; 5. Avoidance Opening; 16. Insertion Interface; 17. Abutment Part; 211. Arc-Shaped Positioning Hole; 48. Detailed Implementation

[0025] The specific embodiments of the present invention are described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the present invention.

[0026] See Figures 1 to 6 The stepless buffer adjustment damping hinge of the present invention includes a hinge cup 1, a hinge seat 2, a buffer 3, and a stepless buffer adjustment mechanism 4.

[0027] The hinged cup 1 includes a cup groove 11 and a connecting edge 12 extending to both sides from the upper end of the cup groove 11. The connecting edge 12 is provided with a connecting hole, and the cup groove 11 is provided with a cup cavity 13 with an upper opening.

[0028] The hinge seat 2 has a hinge arm 21 with an arc-shaped structure fixedly connected to one end. The outer end of the hinge arm 21 extends into the cup cavity 13 and is rotatably connected to the hinge cup 1. An elastic element is provided between the hinge seat 2 and the hinge cup 1.

[0029] The buffer 3 is slidably mounted within the cup cavity 13 and its rear end abuts against the hinge arm 21 for transmission engagement. It provides assistance when the damping hinges are relatively open and provides cushioning when the damping hinges are relatively closed. The buffer 3 has an adjusting push top 31 on its side. The buffer 3 includes a cylindrical buffer cylinder 32 and a push rod 33 movably placed within the buffer cylinder 32. The push rod 33 of the buffer 3 abuts against the inner wall of the cup cavity 13 away from the hinge seat 2.

[0030] The stepless buffer adjustment mechanism 4 includes an adjustment cover 41 and an adjustment swing arm 42. The adjustment cover 41 is used to cover the opening of the cup cavity 13. One end of the adjustment swing arm 42 is rotatably connected to the adjustment cover 41. The other side of the adjustment swing arm 42 is provided with a pusher 421 extending to the bottom and abutting against the rear side of the adjustment pusher 31. The adjustment cover 41 is provided with an arc-shaped positioning hole 48 and an arc-shaped clearance hole 43 that cooperates with the pusher 421. The inner wall of the arc-shaped positioning hole 48 is provided with a number of positioning teeth 44 arranged along the arc direction on the outer arc wall. The pusher 421 is provided with a locking protrusion 422 that cooperates with the number of positioning teeth 44 for positioning. By controlling the adjustment swing arm 42 to swing relative to the arc-shaped positioning hole 48, the extension and retraction stroke of the buffer 3 is adjusted, so as to realize the elastic drive assistance of the adjustment hinge when it is relatively open and the buffer damping when it is relatively closed, as well as the elastic drive stroke of the buffer 3 when the adjustment damping hinge is relatively open and the buffer stroke of the buffer 3 when the adjustment damping hinge is relatively closed. Furthermore, when the pusher 421 of the adjusting arm 42 is moved to one end of the arc-shaped positioning hole 48 by manipulating the pusher 421, the pusher 421 pushes the pusher top to compress the buffer 3, thereby closing the buffering and assisting functions of the buffer 3. When the pusher 421 of the adjusting arm 42 is moved to the other end of the arc-shaped positioning hole 48 by manipulating the opposite direction, the pusher 421 disengages from the pusher top and releases the buffer 3 to elastically reset, thereby opening the buffering and assisting functions of the buffer 3.

[0031] Since the calculation of elastic potential energy is positively correlated with the elastic coefficient and deformation stroke, by adjusting the extension and contraction deformation stroke of the buffer 3, the upper limit of the elastic potential energy released when the buffer 3 elastically resets and the upper limit of the elastic potential energy stored when compressed can be changed. This application utilizes the method of adjusting and changing the upper limit of the extension and contraction stroke of the buffer 3 to change the upper limit of the elastic potential energy released when the buffer 3 elastically resets and the upper limit of the elastic potential energy stored when compressed. This allows the damping hinge to increase or decrease the work done by driving the cabinet door, that is, to increase or decrease the kinetic energy of driving the cabinet door to swing, thereby adjusting the magnitude of the elastic assistance of the damping hinge when the cabinet door is opened, and to increase or decrease the elastic potential energy stored when the damping hinge is compressed, thereby adjusting the magnitude of the buffer damping of the damping hinge when the cabinet door is closed.

[0032] Compared with the prior art, the stepless buffer adjustment damping hinge of the present invention, by setting a stepless buffer adjustment mechanism 4 including an adjustment cover 41 and an adjustment swing arm 42, utilizes the interaction between the pusher 421 on the adjustment swing arm 42 and the arc-shaped positioning hole 48 with positioning tooth groove 44 on the adjustment cover 41, so that the user can flexibly and steplessly adjust the extension and retraction stroke of the buffer 3 in the cup cavity 13 by manipulating the continuous swing of the adjustment swing arm 42 in the arc-shaped positioning hole 48. This adjusts the elastic drive assistance of the hinge when it is relatively open and the buffer damping when it is relatively closed, realizing personalized and continuously adjustable buffering force and stroke, significantly improving the smoothness, quietness and user experience of the furniture door panel opening and closing process, while effectively reducing the impact wear on the cabinet and door panel, and enhancing the applicability and service life of the hinge.

[0033] See Figures 1 to 6 In one embodiment, the adjusting cover 41 is mounted on the hinge cup 1 via a snap-fit ​​structure 141. The snap-fit ​​structure 141 includes two opposing grooves 14 disposed on the inner walls of the cup cavity 13 and snap-fits 141 disposed on both sides of the adjusting frame. One end of the adjusting arm 42 is provided with a shaft hole 423. The adjusting cover 41 is provided with a downwardly extending rotating shaft 411 corresponding to the shaft hole 423. The shaft hole 423 is sleeved on the rotating shaft 411. The hinge cup 1 is provided with an abutment platform 15 on the corresponding side of the rotating shaft 411. When the adjusting cover 41 is installed in place relative to the hinge cup 1, the lower end of the rotating shaft 411 abuts against the abutment platform 15, thereby limiting the detachment of the shaft hole 423. The adjustment cover 41 is conveniently installed on the hinge cup 1 using a snap-fit ​​structure 141. A shaft hole 423 is provided at the end of the adjustment arm 42 to engage with the shaft 411 of the adjustment cover 41. At the same time, the abutment platform 15 provided on the side of the hinge cup 1 abuts and limits the lower end of the shaft 411 when it is installed in place. This integrated linkage structure not only ensures the stability of the connection between the adjustment cover 41 and the hinge cup 1, but more importantly, it effectively prevents the shaft hole 423 of the adjustment arm 42 from accidentally coming off the shaft 411. This improves the structural reliability, durability and ease of installation and maintenance of the entire stepless buffer adjustment mechanism 4 under frequent operation.

[0034] See Figures 1 to 6In one embodiment, the adjusting cover 41 is provided with an arc-shaped limiting edge 45 on the upper side of the plurality of positioning grooves 44. The limiting edge 45 is used to limit the locking protrusion 422 at the end of the adjusting arm 42 from disengaging from the upper side of the positioning grooves 44. The limiting edge 45 is an integral structure with the adjusting frame. By setting the limiting edge 45 on the upper side of the plurality of positioning grooves 44 of the adjusting cover 41, and making it form an upward limiting constraint on the locking protrusion 422 at the end of the adjusting arm 42, this structure can effectively prevent the locking protrusion 422 from accidentally disengaging from the positioning grooves 44 under external vibration or abnormal operation, thereby ensuring the locking stability and reliability of the adjusting arm 42 in any adjustment position, and enhancing the anti-interference ability and long-term positioning accuracy of the stepless buffer adjustment mechanism 4.

[0035] See Figures 1 to 6 In one embodiment, the upper side of the adjusting arm 42 is provided with an operating part 46 for manipulating the relative swing of the adjusting arm 42; the operating part 46 is in the shape of a dot or a cylinder; by setting it in this way, by providing an operating part 46 specifically for contact and force application by hand or tool on the upper side of the adjusting arm 42, the user can directly and conveniently operate the adjusting arm 42 for precise relative swing without the need for other tools, thereby realizing stepless adjustment of the stroke of the buffer 3. This design significantly improves the product's adjustment convenience and operation humanization level, and improves the user experience.

[0036] See Figures 1 to 6 In one embodiment, when the locking protrusion 422 of the adjusting arm 42 swings to one end of the arc-shaped positioning hole 48, the extension stroke of the buffer 3 is adjusted to the maximum state, and the length direction of the adjusting arm 42 and the buffer 3 remain perpendicular to each other. By setting it in this way, the extension stroke of the buffer 3 is designed to be at its maximum when the locking protrusion 422 of the adjusting arm 42 swings to one end of the arc-shaped positioning hole 48, and at the same time the length direction of the adjusting arm 42 and the buffer 3 are kept perpendicular. This structure not only intuitively indicates the limit adjustment position of the maximum stroke, but also utilizes the optimal torque of the arm pushing the buffer 3 when it is in the vertical state, ensuring the stability and efficiency of the mechanism transmission under the maximum buffering or assist requirements, and improving the clarity of adjustment and the controllability of operation.

[0037] See Figures 1 to 6In one embodiment, the adjusting cover 41 is provided with downwardly extending abutment seats 47 on both sides of the buffer 3. When the adjusting cover 41 is installed relative to the hinge cup 1, the abutment seats 47 abut against the bottom wall of the cup cavity 13. The buffer cylinder 32 is cylindrical, and the lower part of the abutment portion 211 away from the adjusting push top 31 is provided with an arc-shaped fitting portion 471 that matches the outer contour of the cylindrical buffer cylinder 32. With this arrangement, by providing downwardly extending abutment seats 47 on both sides of the buffer 3 on the adjusting cover 41, and making the abutment seats 47 and the bottom wall of the cup cavity 13 form a stable abutment when the adjusting cover 41 is installed, this structure can effectively disperse the force from the buffer 3 during operation on the adjusting cover 41, enhance the overall compressive strength and installation stability of the adjusting cover 41, prevent deformation or displacement due to long-term stress, and thus ensure that the stepless buffer adjustment mechanism 4 connected to it works accurately and reliably for a long time.

[0038] See Figures 1 to 6 In one embodiment, the side of the abutment seat 47 near the side of the adjusting push top 31 is provided with an inwardly extending guide seat 472. The guide seat 472 and the cover plate of the adjusting cover 41 form a guide groove 473, and the adjusting push top 31 is placed in the guide groove 473. With this arrangement, by providing an inwardly extending guide seat 472 on the abutment seat 47 near the side of the adjusting push top 31 and cooperating with the cover plate of the adjusting cover 41 to form a guide groove 473, and precisely restricting the adjusting push top 31 of the buffer 3 within the guide groove 473, this structure provides stable and precise linear guidance for the back-and-forth sliding of the buffer 3 during adjustment and operation, effectively preventing the buffer 3 from tilting or jamming due to uneven force, thereby ensuring the smoothness of the buffer stroke adjustment and the reliability of the action, and improving the overall service life and performance consistency of the product.

[0039] See Figures 1 to 6 In one embodiment, the elastic element is provided in two parts, namely torsion springs 5 ​​respectively located on both sides of the hinge cup 1. By using two torsion springs 5 ​​respectively located on both sides of the hinge cup 1 as elastic elements, the elastic restoring force distribution of the hinge during the opening and closing process is more symmetrical and balanced, which effectively improves the stability of the hinge operation, while enhancing the load-bearing capacity and anti-eccentric load performance of the overall structure, and ensuring the reliability of the product under long-term use.

[0040] See Figures 1 to 6In one embodiment, the two torsion springs 5 ​​are respectively located on the outer side of the hinge cup 1. The two opposing inner walls of the cup cavity 13 are provided with clearance openings 16 communicating with the outer side. The hinge cup 1 is provided with an insertion interface 17 located in front of the clearance openings 16 for the torsion springs 5. Abutment portions 211 extend from both sides of the hinge arm 21. One spring arm of the torsion spring 5 is inserted into the insertion interface 17, and the other spring arm of the torsion spring 5 passes through the clearance opening 16 and abuts against the corresponding abutment portion 211 of the hinge arm 21. By cleverly placing the two torsion springs 5 ​​on the outer side of the hinge cup 1 and utilizing… The avoidance opening 16 on the inner wall of the cup cavity 13 and the insertion interface 17 on the hinge cup 1 allow one arm of the torsion spring 5 to be inserted into the insertion interface 17 for stable positioning, while the other arm passes through the avoidance opening 16 and directly abuts against the hinge arm 21. This structure effectively transfers the torsional potential energy of the torsion spring 5 to the hinge arm 21, which not only provides balanced and lasting reset assistance for the rotation of the damping hinge and enhances the smoothness of opening and closing, but also simplifies the internal layout of the cup cavity 13 by placing the torsion spring 5 externally, reduces spatial interference to the buffer 3 and the adjustment mechanism, and improves the compactness and ease of maintenance of the overall structure.

[0041] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A stepless adjustable damping hinge, characterized in that, include: A hinged cup with a cup cavity that opens at the top; The hinge seat extends into the cup cavity via a hinge arm and is rotatably connected to the hinge cup. An elastic element is provided between the hinge seat and the hinge cup. The buffer is slidably mounted in the cup cavity and its rear abuts against the hinge arm for transmission engagement. It is used to provide assistance when the damping hinge is relatively open and to provide a buffering effect when the damping hinge is relatively closed. The buffer has an adjustment push top on its side. The stepless buffer adjustment mechanism includes an adjustment cover and an adjustment swing arm. The adjustment cover is used to close the opening of the cup cavity. One end of the adjustment swing arm is rotatably connected to the adjustment cover. The other side of the adjustment swing arm is provided with a pusher extending to the bottom and abutting against the rear side of the adjustment pusher. The adjustment cover is provided with an arc-shaped positioning hole and an arc-shaped clearance hole that cooperates with the pusher. The inner wall of the arc-shaped positioning hole is provided with several positioning grooves arranged along the arc direction on the outer arc wall. The pusher is provided with a locking protrusion that cooperates with several positioning grooves. By controlling the adjustment swing arm to swing relative to the arc-shaped positioning hole, the extension and retraction stroke of the buffer is adjusted, so as to realize the elastic drive assistance of the adjustment hinge when it is relatively open and the buffer damping when it is relatively closed.

2. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, The adjusting cover is installed on the hinge cup via a snap-fit ​​structure; One end of the adjusting arm is provided with a shaft hole, and the adjusting cover is provided with a downwardly extending rotating shaft corresponding to the shaft hole. The shaft hole is sleeved on the rotating shaft, and the side of the hinge cup is provided with an abutment platform corresponding to the rotating shaft. When the adjusting cover is installed in place relative to the hinge cup, the lower end of the rotating shaft abuts against the abutment platform, thereby limiting the shaft hole from disengaging from the rotating shaft.

3. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, The adjusting cover is provided with a limiting edge on the upper side of the plurality of positioning grooves. The limiting edge is used to limit the locking protrusion at the end of the adjusting arm from disengaging from the upper side of the positioning groove.

4. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, The upper side of the adjusting arm is provided with an operating part for manipulating the relative swing of the adjusting arm.

5. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, When the adjusting arm swings to one end of the arc-shaped positioning hole, the extension stroke of the buffer is adjusted to the maximum state, and the adjusting arm and the length direction of the buffer remain perpendicular to each other.

6. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, The adjusting cover is provided with downwardly extending abutment seats on both sides of the buffer. When the adjusting cover is installed in place relative to the hinge cup, the abutment seats abut against the bottom wall of the cup cavity.

7. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, The abutment seat near the top of the adjusting push is provided with an inwardly extending guide seat, and a guide groove is formed between the guide seat and the cover plate of the adjusting cover, with the top of the adjusting push placed in the guide groove.

8. The stepless buffer adjustable damping hinge according to claim 1, characterized in that, The elastic element consists of two torsion springs, which are respectively located on both sides of the hinge cup.

9. The stepless buffer adjustable damping hinge according to claim 8, characterized in that, The two torsion springs are located on the outer side of the hinge cup, and the two opposite inner walls of the cup cavity are provided with a clearance opening that communicates with the outer side. The hinge cup is located in front of the torsion spring and has an insertion interface. One of the spring arms of the torsion spring is inserted into the insertion interface, and the other spring arm of the torsion spring passes through the clearance opening and abuts against the hinge arm.

Images