Damped switchable american hinge device

Abstract

The utility model belongs to hinge device technical field, concretely relates to the American hinge device of damping switch switching. The utility model discloses the American hinge device of damping switch switching, through setting damping switch switching mechanism, user can according to actual use demand flexible control American hinge's buffer damping function state, when needing to close buffer damping function, through pressing locking portion makes the lock catch into spacing stop block moving path, realizes the buffer automatic locking when hinge closure and plays the buffer effect, and when needing to open buffer damping function, through pressing unlocking portion can make the lock catch separate spacing stop block path to remove buffer locking state, effectively solved the limitation of traditional buffer hinge damping effect unadjustable state, both retained American hinge inherent structural stability and high bearing capacity, also through the buffer mode of switchable, obviously improved applicability, realized the unity of functionality and convenient operation finally.

Description

Technical Field

[0001] This utility model belongs to the technical field of hinge devices, specifically relating to an American-style hinge device with damping switch switching. Background Technology

[0002] American-style 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 damping hinges on the market adopt a structure with built-in dampers. However, the damping effect of these products is usually fixed and cannot be opened or closed according to the user's needs. Utility Model Content

[0003] The purpose of this invention is to overcome the limitation that existing American hinges cannot open or close the damping function according to user needs, and to provide an American hinge device that can switch the damping function to open or close.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An American-style hinge device with damping switch switching, comprising a hinge cup, hinge base, damper, and damping switch switching mechanism.

[0006] A hinged cup has a cup cavity located on the inner side.

[0007] The hinged seat is rotatably connected to one side of the hinge cup via a hinged arm.

[0008] The buffer is slidably disposed within the cup cavity and abuts against the hinge arm, used to provide assistance when the hinge device is relatively open and to provide cushioning when the hinge device is relatively closed. The buffer includes a cylindrical buffer cylinder and a push rod movable within the buffer cylinder, with the push rod abutting against the inner wall of the cup cavity away from the hinge seat.

[0009] The damping switch switching mechanism includes a lock seat, a pressure cover, and a limiting block located on the side of the buffer cylinder. The lock seat has an arc-shaped opening at the bottom that mates with the upper part of the buffer cylinder. The pressure cover is used to close the cup cavity, limiting the buffer and the lock seat within the cup cavity. The lock seat can move circumferentially around the outer periphery of the buffer cylinder through the engagement of the arc-shaped opening with the buffer cylinder. The lock seat has a locking part and an unlocking part on the two outer sides of the arc-shaped opening, respectively. The bottom of the locking part has a latch that mates with the limiting block. By pressing the locking part, the latch can be moved to one side around the outer periphery of the buffer cylinder and enter the movement path of the limiting block. When the hinge device is relatively closed, the hinge arm pushes the limiting block of the buffer into the latch, thereby locking the buffer and realizing the buffering and assisting functions of closing the buffer. By pressing the unlocking part, the latch can be moved out of the movement range of the limiting block, thereby unlocking the buffer and realizing the buffering and assisting functions of opening the buffer.

[0010] Compared with existing technologies, the American-style hinge device with damping switch switching of this utility model allows users to flexibly control the buffer damping function of the American-style hinge according to actual usage needs by setting up a damping switch switching mechanism. When it is necessary to turn off the buffer damping function, pressing the locking part causes the latch to enter the movement path of the limit stop, so that the buffer automatically locks and plays a buffering role when the hinge is closed. When it is necessary to turn on the buffer damping function, pressing the unlocking part causes the latch to disengage from the limit stop path to release the buffer from the locked state. This effectively solves the limitation of the traditional buffer hinge's non-adjustable damping effect. It retains the inherent structural stability and high load-bearing capacity of the American-style hinge, and significantly improves its applicability through the switchable buffering mode. At the same time, the assistance provided by the buffer during the hinge opening process further optimizes the user experience, ultimately achieving a unity of functionality and ease of operation.

[0011] Furthermore, the cover is provided with movable clearance grooves corresponding to the locking and unlocking parts, and the sides of the locking and unlocking parts are provided with limiting flanges. The sidewalls of the movable clearance grooves are provided with limiting grooves that cooperate with the limiting flanges. When the locking part is pressed into place, the limiting flange of the locking part is engaged in the corresponding limiting groove, and at the same time, the limiting flange of the unlocking part is disengaged from the corresponding limiting groove; when the unlocking part is pressed into place, the limiting flange of the locking part is disengaged from the corresponding limiting groove, and at the same time, the limiting flange of the unlocking part is engaged in the corresponding limiting groove. Inside the slot; by setting up a movable clearance slot inside the pressure cap, and utilizing the cooperation between the limiting flanges on the locking and unlocking parts and the upper limit grooves on the wall of the movable clearance slot, when any part is pressed into place, its flange will engage with the groove to achieve self-locking, while the flange of the other part will simultaneously disengage from its groove. Thus, the precise and stable switching and mechanical interlocking of the two states are directly completed on the pressure cap, the core fixed component. This not only improves the clarity of the operating feel and the reliability of state maintenance, but also optimizes the compactness of the overall structure, making the operation of the switching mechanism more stable.

[0012] Furthermore, the limiting flanges of the locking and unlocking parts are provided on both sides along the movement direction of the buffer cylinder.

[0013] Furthermore, the latch is provided with a guide ramp facing the hinge seat and a locking surface located on the back of the guide ramp. When the locking part is pressed, during the relative closing process of the hinge device, the hinge arm pushes the limit block of the buffer into the locking surface under the guidance of the guide ramp, thereby realizing that the limit block enters the latch and the buffer is locked. With this configuration, by providing a guide ramp facing the hinge seat and a locking surface on its back on the latch, when the hinge is closed and the hinge arm pushes the limit block of the buffer toward the latch, the guide ramp can first contact the limit block and guide it to smoothly slide into the back of the latch until it is finally reliably locked by the locking surface. This process realizes automatic, smooth and precise engagement of the buffer locking, effectively avoiding jamming or wear caused by rigid collision, and improving the reliability and service life of the mechanism.

[0014] Furthermore, the limiting block includes a limiting block and a limiting buckle disposed on the upper side of the limiting block; by setting it in this way, the limiting block is designed as a separate limiting block and a limiting buckle, and the limiting buckle is specifically used to precisely cooperate with the locking surface of the latch to achieve locking.

[0015] Furthermore, limit seats are provided on both sides of the buffer cylinder, and the limit blocks are located on the outer front end of the limit seats. The lock seat is in the shape of an arc arch, and the central angles of the two limit seats on the buffer cylinder are larger than the central angles of the lock seat at both ends, so that the lock seat can move circumferentially around the outer circumference of the buffer cylinder and the two ends of the lock seat limit the circumferential movement of the lock seat by abutting against the corresponding limit seats. By designing the lock seat in the shape of an arc arch and making the central angles of its two ends smaller than the central angles of the limit seats on both sides of the buffer cylinder, the two limit seats are cleverly used as mechanical blocks to provide a clear and limited range of motion for the circumferential rotation of the lock seat. This not only ensures that the lock seat can switch smoothly between the locked and unlocked positions, but also effectively prevents mechanical damage or functional failure caused by excessive rotation of the lock seat through hard contact limit, thereby significantly improving the accuracy of the damping switch switching operation and the reliability of the entire hinge device.

[0016] Furthermore, guide seats are provided on both sides of the cup cavity, and a guide sliding groove is formed between the two guide seats to allow the buffer to move linearly. The buffer is limited to move within the guide sliding groove by the limit seats on both sides. The two sides of the cup cavity form an installation area on the front side of the guide seats, and the limit block, locking part and unlocking part extend into the corresponding installation area. With this configuration, by setting the guide seat with the guide sliding groove in the cup cavity, precise guidance and stable support are provided for the linear movement of the buffer, effectively preventing it from deviating or jamming during movement. At the same time, the installation area formed on the front side of the cup cavity provides dedicated clearance and operation space for key moving parts such as the limit block and the locking part and unlocking part of the lock seat. This allows the smooth sliding of the buffer and the switching function of the damping switch to work efficiently and without interference within the compact cup cavity, thereby optimizing the overall layout while improving the reliability and stability of the hinge operation.

[0017] Furthermore, each of the two installation areas is provided with a positioning hole, and the bottom of the pressure cap is provided with a positioning post that mates with the positioning hole. The pressure cap is positioned and engaged with the positioning hole of the cup cavity through the positioning post at the bottom, and connected to the cup cavity through the upper snap-fit ​​structure to achieve the assembly connection between the pressure cap and the hinge cup. With this arrangement, the positioning hole in the installation area and the positioning post at the bottom of the pressure cap cooperate with each other to achieve precise pre-positioning of the pressure cap and the hinge cup in the early stage of assembly, effectively preventing the pressure cap from shifting before final fixing. Combined with the upper snap-fit ​​structure to complete the final locking, this assembly method of separating positioning and locking significantly improves the installation accuracy and operation convenience of the pressure cap, ensuring that the pressure cap can accurately cover and stably constrain all functional components in the cup cavity, thereby ensuring the long-term reliability and consistency of the entire damping switch switching mechanism.

[0018] Furthermore, the top of the locking and unlocking parts are respectively provided with upwardly extending pressing posts, and the pressure cover is provided with a clearance hole corresponding to each pressing post. The top of the pressing post is provided with a pressing cap extending out of the clearance hole. The pressure cover is provided with locking and unlocking marks corresponding to the functions of the pressing caps. With this design, the upwardly extending pressing posts and the pressing caps at the top allow users to easily apply force directly from outside the pressure cover. Combined with the clearly corresponding locking and unlocking marks on the pressure cover, the function of each pressing cap is intuitively indicated, thus optimizing human-computer interaction. This makes the switching operation of the damping function simple, intuitive, and without guesswork, significantly improving user experience and operating efficiency.

[0019] Furthermore, the bottom of the pressure cover is provided with an arc-shaped movable groove for the lock seat to move and cooperate. By setting the bottom of the pressure cover with an arc-shaped movable groove that matches the shape of the lock seat, precise guidance and stable radial support are provided for the circumferential rotation of the lock seat. This effectively limits the shaking or offset that may occur during the movement of the lock seat, and ensures that the locking part and the unlocking part can move smoothly along a predetermined trajectory when pressed, thereby improving the accuracy of damping function switching and the consistency of operating feel.

[0020] Furthermore, torsion springs that cooperate with the hinge arm are provided on both sides of the lock seat. Attached Figure Description

[0021] Figure 1 Schematic diagram of an American-style hinge mechanism for switching damping switches Figure 1 .

[0022] Figure 2 Schematic diagram of an American-style hinge mechanism for switching damping switches Figure 2 .

[0023] Figure 3 This is an exploded view of the hinge cup and damping switch switching mechanism.

[0024] Figure 4 This is an exploded view of the damping switch switching mechanism.

[0025] Figure 5 This is an exploded view of the damping switch switching mechanism and the buffer.

[0026] Labeling Explanation: 1. Hinge Cup; 2. Hinge Seat; 3. Buffer; 4. Damping Switch Switching Mechanism; 21. Hinge Arm; 11. Cup Cavity; 31. Buffer Cylinder; 32. Push Rod; 41. Lock Seat; 42. Pressure Cover; 43. Limiting Block; 411. Arc Opening; 412. Locking Part; 413. Unlocking Part; 414. Locking Buckle; 421. Movable Clearance Groove; 415. Limiting Flange; 422. Limiting Groove; 431. Limiting Block; 432. Guide Inclined Surface; 416. Locking Surface; 417. Limiting Seat; 33. Guide Seat; 13. Guide Sliding Groove; 14. Installation Area; 15. Positioning Hole; 16. Positioning Post; 420. Pressing Post; 410. Clearance Hole; 44. Pressing Cap; 45. Locking Mark; 46. Unlocking Mark; 47. Arc Movable Groove; 429. Torsion Spring; 5. Buckle Structure; 428. Detailed Implementation

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] See Figures 1 to 5 The American-style hinge device for damping switch switching of this utility model includes a hinge cup 1, a hinge seat 2, a buffer 3, and a damping switch switching mechanism 4.

[0029] The hinged cup 1 has a cup cavity 11 located on the inner side and open on the upper side.

[0030] The hinge seat 2 is rotatably connected to the rear side of the hinge cup 1 via the hinge arm 21 on one side.

[0031] The buffer 3 is slidably disposed in the cup cavity 11 and its rear end abuts against the hinge arm 21. It is used to provide assistance when the hinge device is relatively open and to provide a buffering effect when the hinge device is relatively closed. The buffer 3 includes a cylindrical buffer cylinder 31 and a push rod 32 movably disposed in the buffer cylinder 31. The push rod 32 of the buffer 3 abuts against the inner wall of the front side of the cup cavity 11 away from the hinge seat 2.

[0032] The damping switch switching mechanism 4 includes a lock seat 41, a pressure cap 42, and limiting blocks 43 located on both sides of the buffer cylinder 31. The lock seat 41 has arc-shaped openings 411 on the front and rear sides and a bottom opening that mate with the upper part of the buffer cylinder 31. The pressure cap 42 is used to cover the cup cavity 11, limiting the buffer 3 and the lock seat 41 within the cup cavity 11. The lock seat 41 can move circumferentially around the outer periphery of the buffer cylinder 31 through the engagement of the arc-shaped opening 411 with the buffer cylinder 31. The lock seat 41 has a locking part 412 and an unlocking part 413 on the two outer sides of the arc-shaped opening 411, respectively. The bottom of the locking part 412 has a limiting part 43. The latch 414, which cooperates with the stop block 43, can be moved to one side around the outer periphery of the buffer cylinder 31 by pressing the locking part 412 and enter the movement path of the limit stop block 43 on one side. When the hinge device is relatively closed, the hinge arm 21 pushes the limit stop block 43 of the buffer 3 into the latch 414 to lock the buffer 3, thereby closing the buffer and assist function of the buffer 3. By pressing the unlocking part 413, the latch 414 can be moved out of the movement range of the limit stop block 43, thereby unlocking the buffer 3 and opening the buffer and assist function of the buffer 3.

[0033] Compared with the prior art, the American-style hinge device with damping switch switching of this utility model, by setting up a damping switch switching mechanism 4, allows users to flexibly control the buffer damping function of the American-style hinge according to actual usage needs. When it is necessary to turn off the buffer damping function, pressing the locking part 412 causes the latch 414 to enter the movement path of the limit block 43, so that the buffer 3 automatically locks and plays a buffering role when the hinge is closed. When it is necessary to turn on the buffer damping function, pressing the unlocking part 413 causes the latch 414 to disengage from the path of the limit block 43 to release the locked state of the buffer 3. This effectively solves the limitation of the traditional buffer hinge's damping effect not being adjustable. It retains the inherent structural stability and high load-bearing capacity of the American-style hinge, and significantly improves its applicability through the switchable buffering mode. At the same time, the assistance provided by the buffer 3 during the hinge opening process further optimizes the user experience, ultimately achieving a unity of functionality and ease of operation.

[0034] See Figures 1 to 5In one embodiment, the inner sides of the pressure cover 42 are respectively provided with movable clearance grooves 421 corresponding to the locking part 412 and the unlocking part 413. The sides of the locking part 412 and the unlocking part 413 are respectively provided with limiting flanges 415. The sidewalls of the movable clearance grooves 421 are respectively provided with limiting grooves 422 that cooperate with the limiting flanges 415. When the locking part 412 is pressed into place, the limiting flange 415 of the locking part 412 engages with the corresponding limiting groove 422, while the limiting flange 415 of the unlocking part 413 disengages from the corresponding limiting groove 422. When the unlocking part 413 is pressed into place, the limiting flange 415 of the locking part 412 disengages from the corresponding limiting groove 422, while the limiting flange 415 of the unlocking part 413 disengages from the corresponding limiting groove 422. The positioning flange 415 engages with the corresponding limiting groove 422. With this configuration, and by providing a movable clearance groove 421 within the pressure cap 42, and utilizing the engagement of the limiting flange 415 on the locking part 412 and the upper limit groove 422 on the wall of the movable clearance groove 421 with the upper limit groove 422, when any component is pressed into position, its limiting flange 415 engages with the limiting groove 422 to achieve self-locking. Simultaneously, the limiting flange 415 of the other component disengages from the limiting groove 422. This allows for precise and stable switching and mechanical interlocking between the two states directly on the pressure cap 42, the core fixing component. This not only improves the clarity of the operating feel and the reliability of state maintenance but also optimizes the overall structural compactness, making the switching mechanism more stable.

[0035] In one embodiment, the limiting flanges 415 of the locking part 412 and the unlocking part 413 are provided on both sides along the movement direction of the buffer cylinder 31.

[0036] See Figures 1 to 5 In one embodiment, the latch 414 is provided with a guide slope 416 facing the hinge seat 2 and a locking surface 417 located on the back of the guide slope 416. When the locking part 412 is pressed, during the relative closing process of the hinge device, the hinge arm 21 pushes the limiting block 43 of the buffer 3 to engage with the locking surface 417 under the guidance of the guide slope 416, thereby realizing that the limiting block 43 enters the latch 414 and the buffer 3 is locked. With this configuration, by providing a guide slope facing the hinge seat 2 on the latch 414, The guide ramp 416 and the locking surface 417 on its back ensure that, with the locking part 412 pressed to the ready position, when the hinge is closed and the hinge arm 21 pushes the limit block 43 of the buffer 3 toward the latch 414, the guide ramp 416 can first contact the limit block 43 and guide it to smoothly slide into the back of the latch 414 until it is finally reliably locked by the locking surface 417. This process achieves automatic, smooth and precise engagement of the buffer 3 locking, effectively avoiding jamming or wear caused by rigid collision, and improving the reliability and service life of the mechanism.

[0037] See Figures 1 to 5 In one embodiment, the limiting block 43 includes a limiting block 431 and a limiting buckle 432 disposed on the upper side of the limiting block 431 and cooperating with the latch 414. With this configuration, the limiting block 43 is designed as a separate limiting block 431 and limiting buckle 432, and the limiting buckle 432 is specifically used to precisely cooperate with the locking surface 417 of the latch 414 to achieve locking.

[0038] See Figures 1 to 5 In one embodiment, the buffer cylinder 31 is provided with limiting seats 33 on both sides, and the limiting block 43 is located on the outer front end of the limiting seat 33; the lock seat 41 is in the shape of an arc arch, and the central angle of the two limiting seats 33 on the buffer cylinder 31 is greater than the central angle of the two ends of the lock seat 41, so that the lock seat 41 can move circumferentially around the outer periphery of the buffer cylinder 31 and the two ends of the lock seat 41 limit the circumferential movement of the lock seat 41 by abutting against the corresponding limiting seats 33; with this configuration, the lock... The seat 41 is designed in the shape of a circular arch, and the central angles corresponding to its two ends are smaller than the central angles corresponding to the limit seats 33 on both sides of the buffer cylinder 31. The two limit seats 33 are cleverly used as mechanical stops to provide a clear and limited range of motion for the circumferential rotation of the lock seat 41. This not only ensures that the lock seat 41 can switch smoothly between the locked and unlocked positions, but also effectively prevents the mechanism from being damaged or malfunctioning due to excessive rotation of the lock seat 41 through hard contact limit, thereby significantly improving the accuracy of the damping switch switching operation and the reliability of the entire hinge device.

[0039] See Figures 1 to 5 In one embodiment, guide seats 13 are provided on both sides of the cup cavity 11, and a guide sliding groove 14 is formed between the two guide seats 13 to allow the buffer 3 to move linearly. The buffer 3 is limited to move within the guide sliding groove 14 by limiting seats 33 on both sides. Mounting areas 15 are formed on both sides of the cup cavity 11 in front of the guide seats 13, and the limiting blocks 43, locking parts 412 and unlocking parts 413 extend into the corresponding mounting areas 15. With this configuration, by providing guide seats 13 with guide sliding grooves 14 in the cup cavity 11, 3. It provides precise guidance and stable support for the linear movement of the buffer 3, effectively preventing it from deviating or jamming during movement. At the same time, the installation area 15 formed on the front side of the cup cavity 11 provides dedicated clearance and operation space for key moving parts such as the limit block 43 and the locking part 412 and unlocking part 413 of the lock seat 41. This allows the smooth sliding of the buffer 3 and the switching function of the damping switch to work efficiently and without interference within the compact cup cavity 11, thereby optimizing the overall layout while improving the reliability and stability of the hinge operation.

[0040] See Figures 1 to 5 In one embodiment, each of the two installation areas 15 is provided with a positioning hole 16, and the bottom of the pressure cap 42 is provided with a positioning post 420 that cooperates with the positioning hole 16. The pressure cap 42 is positioned and cooperated with the positioning hole 16 of the cup cavity 11 by the positioning post 420 at the bottom and connected to the cup cavity 11 by the upper snap-fit ​​structure 428 to realize the assembly connection between the pressure cap 42 and the hinge cup 1. With this setting, the positioning hole 16 in the installation area 15 cooperates with the positioning post 420 at the bottom of the pressure cap 42, which can realize the precise pre-positioning of the pressure cap 42 and the hinge cup 1 in the early stage of assembly, effectively preventing the pressure cap 42 from shifting before final fixation. Combined with the upper snap-fit ​​structure 428, the final locking is completed. This assembly method of separating positioning and locking significantly improves the installation accuracy and operation convenience of the pressure cap 42, ensuring that the pressure cap 42 can accurately cover and stably constrain all functional components in the cup cavity 11, thereby ensuring the reliability and consistency of the entire damping switch switching mechanism 4 in long-term operation.

[0041] See Figures 1 to 5 In one embodiment, the top of the locking part 412 and the unlocking part 413 are respectively provided with upwardly extending pressing posts 410. The pressure cover 42 is provided with a clearance hole 44 corresponding to each pressing post 410. The top of the pressing post 410 is provided with a pressing cap 45 extending out of the clearance hole 44. The pressure cover 42 is provided with a locking mark 46 and an unlocking mark 47 corresponding to the pressing cap 45. With this design, the upwardly extending pressing posts 410 and the top pressing cap 45 allow the user to easily apply force directly from outside the pressure cover 42. Combined with the clearly corresponding locking and unlocking marks 47 on the pressure cover 42, the function of each pressing cap 45 is intuitively indicated, thus optimizing the human-computer interaction. This makes the switching operation of the damping function simple, intuitive, and without guesswork, significantly improving the user experience and operating efficiency.

[0042] See Figures 1 to 5 In one embodiment, the bottom of the pressure cover 42 is provided with an arc-shaped movable groove 429 for the lock seat 41 to move and cooperate. With this configuration, by providing an arc-shaped movable groove 429 at the bottom of the pressure cover 42 that matches the shape of the lock seat 41, precise guidance and stable radial support are provided for the circumferential rotation of the lock seat 41. This effectively limits the swaying or offset that the lock seat 41 may produce during the movement, and ensures that the locking part 412 and the unlocking part 413 can move smoothly along a predetermined trajectory when pressed, thereby improving the accuracy of damping function switching and the consistency of operating feel.

[0043] In one embodiment, the lock seat 41 is provided with torsion springs 5 ​​on both sides, which cooperate with the hinge arm 21.

[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. 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 this utility model.

Claims

1. An American-style hinge device with damping switch switching, characterized in that, include: A hinged cup, having a cup cavity located on the inner side; The hinged seat is rotatably connected to one side of the hinge cup via a hinged arm; The buffer is slidably disposed in the cup cavity and abuts against the hinge arm, and is used to provide assistance when the hinge device is relatively open and to provide a buffering effect when the hinge device is relatively closed. The buffer includes a cylindrical buffer cylinder and a push rod that is movable in the buffer cylinder. The push rod of the buffer abuts against the inner wall of the cup cavity away from the hinge seat. The damping switch switching mechanism includes a lock seat, a pressure cover, and a limiting block located on the side of the buffer cylinder. The lock seat has an arc-shaped opening at the bottom that mates with the upper part of the buffer cylinder. The pressure cover is used to close the cup cavity, limiting the buffer and the lock seat within the cup cavity. The lock seat can move circumferentially around the outer periphery of the buffer cylinder through the engagement of the arc-shaped opening with the buffer cylinder. The lock seat has a locking part and an unlocking part on the two outer sides of the arc-shaped opening, respectively. The bottom of the locking part has a latch that mates with the limiting block. By pressing the locking part, the latch can be moved to one side around the outer periphery of the buffer cylinder and enter the movement path of the limiting block. When the hinge device is relatively closed, the hinge arm pushes the limiting block of the buffer into the latch, thereby locking the buffer and realizing the buffering and assisting functions of closing the buffer. By pressing the unlocking part, the latch can be moved out of the movement range of the limiting block, thereby unlocking the buffer and realizing the buffering and assisting functions of opening the buffer.

2. The American-style hinge device for damping switch switching according to claim 1, characterized in that, The cover has movable clearance grooves corresponding to the locking and unlocking parts, and the sides of the locking and unlocking parts are respectively provided with limiting flanges. The sidewalls of the movable clearance grooves are respectively provided with limiting grooves that cooperate with the limiting flanges. When the locking part is pressed into place, the limiting flange of the locking part is engaged in the corresponding limiting groove, and at the same time, the limiting flange of the unlocking part is disengaged from the corresponding limiting groove. When the unlocking part is pressed into place, the limiting flange of the locking part is disengaged from the corresponding limiting groove, and at the same time, the limiting flange of the unlocking part is engaged in the corresponding limiting groove.

3. The American-style hinge device for damping switch switching according to claim 1, characterized in that, The limiting flanges of the locking and unlocking parts are arranged on both sides along the movement direction of the buffer cylinder.

4. The American-style hinge device for damping switch switching according to claim 1 or 2, characterized in that, The latch has a guide slope facing the hinge seat and a locking surface on the back of the guide slope. When the locking part is pressed, during the relative closing process of the hinge device, the hinge arm pushes the limit block of the buffer into the locking surface under the guidance of the guide slope, thereby realizing that the limit block enters the latch and the buffer is locked.

5. The American-style hinge device for damping switch switching according to claim 1, characterized in that, The limiting block includes a limiting block and a limiting buckle located on the upper side of the limiting block.

6. The American-style hinge device for damping switch switching according to claim 1, characterized in that, The buffer cylinder is provided with limiting seats on both sides, and the limiting block is provided on the outer front end of the limiting seat; The lock seat is in the shape of a circular arc arch. The central angle of the two limiting seats on the buffer cylinder is greater than the central angle of the two ends of the lock seat, so that the lock seat can move circumferentially around the outer periphery of the buffer cylinder and the two ends of the lock seat limit the circumferential movement of the lock seat by abutting against the corresponding limiting seats.

7. The American-style hinge device for damping switch switching according to claim 1, characterized in that, The cup cavity is provided with guide seats on both sides, and a guide sliding groove is formed between the two guide seats to allow the buffer to move linearly. The buffer is limited to move within the guide sliding groove by the limit seats on both sides. The cup cavity is located on the front side of the guide seats to form an installation area, and the limit block, locking part and unlocking part extend into the corresponding installation area.

8. The American-style hinge device for damping switch switching according to claim 7, characterized in that, The two installation areas are respectively provided with positioning holes, and the bottom of the cover is provided with positioning pins that cooperate with the positioning holes. The cover is positioned and cooperated with the positioning holes of the cup cavity through the positioning pins at the bottom and connected to the cup cavity through the buckle structure at the top to realize the assembly connection between the cover and the hinge cup.

9. The American-style hinge device for damping switch switching according to any one of claims 1, 7, or 8, characterized in that, The top of the locking part and the unlocking part are respectively provided with upwardly extending pressing posts. The pressure cover is provided with a clearance hole corresponding to each pressing post. The top of the pressing post is provided with a pressing cap extending out of the clearance hole. The pressure cover is provided with a locking mark and an unlocking mark that correspond to the function of the pressing cap.

10. The American-style hinge device for damping switch switching according to claim 7, characterized in that, The bottom of the pressure cap is provided with an arc-shaped movable groove for the lock seat to move and cooperate. The lock seat is provided with torsion springs on both sides to cooperate with the hinge arm.

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