A damping mechanism for a cabinet door hinge

Abstract

The utility model relates to hinge technical field, specifically disclose a kind of buffer mechanism for cabinet door hinge, including buffer and regulator. Buffer is constituted by fixed part and movable part, and they can be close to each other or far away in buffering process, and movable part is equipped with limit part. Regulator includes the stroke limiting piece rotatably arranged in the outside of buffer, its rotating position can be limited, and keep fixed distance with fixed part. Stroke limiting piece is equipped with abutting part, by rotating stroke limiting piece, it can be in different working position: in a position, abutting part and limit part at least partially overlap in movable part moving direction;In another position, they do not overlap. The mechanism is suitable for the installation of hinge cup of american hinge, and the relative position change of stroke limiting piece and movable part is used to realize the buffer stroke adjustment, and only the core function of "fixed part-stroke limiting piece-movable part" is used to realize multistage adjustment.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a buffer mechanism for cabinet door hinges. Background Technology

[0002] American hinges are widely used connecting components in modern furniture (such as cabinets and wardrobes). They enable the door panels to rotate and open / close through core structures such as hinge arms and hinge cups. To improve the user experience, many American hinges on the market now integrate damping devices, designed to provide a damping effect at the end of the door closing process, thereby achieving a smooth and quiet closing effect and reducing impact and noise.

[0003] Existing soft-close hinges typically have a fixed buffer travel. This fixed travel design reveals certain limitations when facing diverse application scenarios. For example, for door panels of different weights and sizes, or for users with different preferences for closing speed and buffering force, a single buffer travel is unlikely to achieve the best effect. If a lighter door panel has an excessively long buffer travel, it may cause a delayed closing action; while if a heavier door panel has an excessively short buffer travel, it may fail to completely eliminate the impact due to insufficient cushioning.

[0004] Therefore, the purpose of this utility model is to propose an American-style hinge that is simple in structure, easy to adjust, and can provide multiple levels of buffer stroke selection. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing American-style hinges cannot adjust the buffer stroke, and to provide a buffer mechanism for cabinet door hinges.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A buffer mechanism for cabinet door hinges includes a buffer and an adjuster; the buffer includes a fixed part and a movable part that can approach or move away from each other during buffering; the movable part of the buffer is provided with a limiting part; the adjuster includes a travel limiting member rotatably disposed on the outside of the buffer, and its rotational position can be limited; the travel limiting member maintains a fixed distance from the fixed part of the buffer; the travel limiting member is provided with an abutting part; by rotating the travel limiting member, it can be selectively placed in at least two of the following working positions: in one working position, the abutting part and the limiting part at least partially overlap in the direction of movement of the movable part; in another working position, the abutting part and the limiting part do not overlap in the direction of movement of the movable part.

[0007] This invention relates to a buffer mechanism that can be used on American-style hinges, mounted on the hinge cup. Its core lies in adjusting the buffer travel through the relative positional change between a fixed adjuster and the movable part of the buffer. This basic architecture is streamlined, simplifying the adjustment function to the core interaction of a "fixed part - travel limiter - movable part," a clever design that provides an easy-to-implement and low-cost basic solution for adjustable buffer mechanisms. Compared to existing technologies, this invention eliminates the need for complex linkage mechanisms, achieving reliable multi-level adjustment solely through the cooperation of the movable part of the buffer and key structures on the adjuster. With fewer components and simpler operational logic, it significantly reduces manufacturing costs and assembly difficulty. Furthermore, this adjustment mechanism is not dependent on a specific layout, allowing its core concept to flexibly adapt to various hinge structures, demonstrating excellent versatility and adaptability.

[0008] Furthermore, the limiting part includes a first limiting part and a second limiting part at different distances from the buffer fixing part; the abutting part includes a first abutting part and a second abutting part that respectively cooperate with the first limiting part and the second limiting part; by rotating the travel limiting member, it can be placed in three working positions: in the first working position, the first abutting part and the first limiting part at least partially overlap in the moving direction of the movable part; in the second working position, the second abutting part and the second limiting part at least partially overlap in the moving direction of the movable part; in the third working position, the first abutting part and the first limiting part, and the second abutting part and the second limiting part do not overlap in the moving direction of the movable part. This solution, by setting two limiting parts at different distances and corresponding abutting parts, can concretize the adjustment function into a clear and stable three-level operation. Users only need to rotate the travel limiting member to conveniently switch between the three states of "first limiting part in effect", "second limiting part in effect", and "no limit", thereby obtaining two different limited travel and one maximum travel. This design effectively meets the differentiated needs of different door panel weights and usage scenarios for buffering force, and the adjustment process is intuitive and reliable.

[0009] Furthermore, the buffer includes a hydraulic cylinder and a mounting base. The mounting base has a mounting groove for assembling the hydraulic cylinder, and the limiting parts are located on two opposite outer sides of the mounting base, with different distances from the limiting parts on both sides to the rear end of the mounting base. In this design, the hydraulic cylinder is fixed within the mounting groove of the mounting base, forming a structurally regular and easily assembled independent buffer module. This modular design allows the buffer mechanism to be flexibly adapted as a standard component to hinge products of different models and specifications, improving product versatility and serialization development efficiency.

[0010] Furthermore, the travel limiter is slidably fitted onto the movable part of the buffer, and the abutment part is provided on the travel limiter.

[0011] Furthermore, the regulator includes an adjusting housing; the adjusting housing has a connecting groove, the bottom and rear end of which are through; the movable part of the buffer is slidably connected to the connecting groove; the connecting groove has an annular groove on the radial periphery of the fixed part, and the clearance adjustment groove is provided on opposite sides of the lower end port of the groove; the travel limit member is disposed in the groove, and the abutment part is provided on opposite sides of the travel limit member and located in the clearance adjustment groove; the travel limit member is also provided with a driving part, and the top of the groove has a clearance opening, through which the driving part protrudes outward. This solution is used to realize the installation and fixation of the buffer and the travel limit member, providing linear guidance for the movement of the buffer, allowing it to slide back and forth along the inner wall, while the groove integrated in the connecting groove encapsulates the travel limit member in a compact space, reducing manufacturing costs and assembly difficulty; the driving part protrudes outward through the clearance opening on the housing, providing users with an intuitive and convenient operating interface. When the buffer slides, its travel distance can be accurately limited by the selected abutment on the travel limit component, thereby reliably realizing stable switching of different buffer travel distances and enabling the hinge to better adapt to diverse application scenarios.

[0012] Furthermore, the contact part can swing up and down in the clearance adjustment groove, and can protrude downwards out of the clearance adjustment groove.

[0013] Furthermore, the hydraulic cylinder and the mounting base are integrally formed. This solution combines the components into one, forming a well-structured and easily assembled independent buffer module. This not only simplifies the production process and improves assembly efficiency, but also avoids dimensional errors and quality fluctuations that may be caused by multiple assembly processes, thus helping to ensure product consistency.

[0014] Furthermore, the travel limiting member is provided with a first locking part, a second locking part and a third locking part, and the side wall of the clearance opening is provided with a fourth locking part. The travel limiting member can selectively engage with the fourth locking part through any one of the first locking part, the second locking part and the third locking part.

[0015] Furthermore, the mating surface between the limiting part and the contacting part is an inclined surface.

[0016] Furthermore, the first, second, and third locking portions are all slots, and the fourth locking portion is a protrusion; or, the first, second, and third locking portions are all circular protrusions, and the fourth locking portion is a slot.

[0017] Furthermore, the drive unit is provided with markings corresponding to the first locking part, the second locking part, and the third locking part. Attached Figure Description

[0018] Figure 1 It is a structural decomposition of the buffer mechanism. Figure 1 ; Figure 2 It is a structural decomposition of the buffer mechanism. Figure 2 ; Figure 3 It is the assembly of the buffer mechanism. Figure 1 ; Figure 4 It is the assembly of the buffer mechanism. Figure 2 ; Figure 5 It is the assembly of the buffer and the travel limit component. Figure 1 ; Figure 6 It is the assembly of the buffer and the travel limit component. Figure 2 ; Figure 7 This is an exploded view of the buffer and travel limit components; Figure 8 This is a diagram showing the buffer mechanism assembled on the hinge in use.

[0019] Label Explanation: Buffer 1, hydraulic cylinder 2, fixed part 21, movable part 22, tilting part 23, mounting base 3, first limiting part 31, second limiting part 32, adjuster 4, stroke limiting part 5, first abutting part 51, second abutting part 52, first locking part 53, second locking part 54, third locking part 55, drive part 56, marking 57, adjusting housing 6, connecting groove 60, annular groove 61, clearance adjustment groove 62, clearance passage 63, fourth locking part 64, hinge 9. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings: In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "front", "rear", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description, and does 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. Therefore, it should not be construed as a limitation of this utility model.

[0021] See Figure 1-8This utility model discloses a buffer mechanism for cabinet door hinges, including a buffer 1 and an adjuster 4. The buffer 1 includes a fixed part 21 and a movable part 22 that can approach or move away from each other during the buffering process. The movable part 22 of the buffer 1 is provided with a limiting part. The adjuster 4 includes a travel limiting member rotatably disposed on the outside of the buffer 1, and its rotation position can be limited. The travel limiting member 5 maintains a fixed distance from the fixed part 21 of the buffer 1. The travel limiting member 5 is provided with an abutting part. By rotating the travel limiting member 5, it can be selectively placed in at least two of the following working positions: in one working position, the abutting part and the limiting part at least partially overlap in the moving direction of the movable part 22; in another working position, the abutting part and the limiting part do not overlap in the moving direction of the movable part 22.

[0022] See Figure 2 The limiting part includes a first limiting part 31 and a second limiting part 32 at different distances from the fixed part 21 of the buffer 1; the abutting part includes a first abutting part 51 and a second abutting part 52 that respectively cooperate with the first limiting part 31 and the second limiting part 32; by rotating the stroke limiting member 5, it can be placed in three working positions: in the first working position, the first abutting part 51 and the first limiting part 31 at least partially overlap in the moving direction of the movable part 22; in the second working position, the second abutting part 52 and the second limiting part 32 at least partially overlap in the moving direction of the movable part 22; in the third working position, the first abutting part 51 and the first limiting part 31, and the second abutting part 52 and the second limiting part 32 do not overlap in the moving direction of the movable part 22. By setting two limiting parts at different distances and corresponding abutting parts, the adjustment function can be concretized into a clear and stable three-level operation. Users can easily switch between three states—"first limit part 31 in action", "second limit part 32 in action", and "no limit"—simply by rotating the travel limit component 5, thus obtaining two different limited travel and one maximum travel. This design effectively meets the differentiated needs of different door panel weights and usage scenarios for cushioning force, and the adjustment process is intuitive and reliable.

[0023] In one embodiment, the buffer 1 includes a hydraulic cylinder 2 and a mounting base 3. The mounting base 3 has a mounting groove for assembling the hydraulic cylinder 2, and limiting parts are located on two opposite outer sides of the mounting base 3, with different distances from the limiting parts on both sides to the rear end of the mounting base 3. In this solution, the hydraulic cylinder 2 is fixed in the mounting groove of the mounting base 3, forming a structurally regular and easily assembled independent buffer module. This modular design facilitates the use of this buffer mechanism as a standard component, allowing it to be flexibly adapted to hinge products of different models and specifications, thus improving the product's versatility and serialization development efficiency.

[0024] In one embodiment, the travel limit member 5 is slidably sleeved on the movable part 22 of the buffer 1, and the first contact part 51 and the second contact part 52 are provided on the travel limit member 5.

[0025] In one embodiment, the regulator 4 includes an adjusting housing 6; the adjusting housing 6 has a connecting groove 60, with its bottom and rear end extending through it; the movable part 22 of the buffer 1 is slidably connected to the connecting groove 60; the connecting groove 60 has an annular groove 61 on the radial periphery of the fixing part 21, and clearance adjustment grooves 62 are provided on opposite sides of the lower end port of the groove; the stroke limiter 5 is disposed in the groove, with abutting parts on opposite sides of the stroke limiter 5 and located in the clearance adjustment groove 62; the stroke limiter 5 is also provided with a driving part 56, and the top of the groove has a clearance opening 63, through which the driving part 56 passes and protrudes outward. This solution is used to realize the installation and fixation of the buffer 1 and the stroke limiter 5, providing linear guidance for the movement of the buffer 1, allowing it to slide back and forth along the inner wall, while the groove integrated in the connecting groove 60 encapsulates the stroke limiter 5 in a compact space, reducing manufacturing costs and assembly difficulty; the driving part 56 protrudes outward through the clearance opening on the housing, providing users with an intuitive and convenient operating interface. When the buffer 1 slides, its movement stroke can be accurately limited by the selected abutment part on the stroke limiter 5, thereby reliably realizing the stable switching of different buffer strokes and enabling the hinge to better adapt to diverse application scenarios.

[0026] In one embodiment, the aforementioned abutting part can swing up and down in the air-avoidance adjustment groove 62 and can protrude downward beyond the air-avoidance adjustment groove 62.

[0027] In one embodiment, the hydraulic cylinder 2 and the mounting base 3 are integrally formed. This solution combines the components into one, forming a well-structured and easy-to-assemble independent buffer module. This not only simplifies the production process and improves assembly efficiency, but also avoids dimensional errors and quality fluctuations that may be caused by multiple assembly processes, which helps to ensure product consistency.

[0028] In one embodiment, the travel limiting member 5 is provided with a first locking part 53, a second locking part 54 and a third locking part 55, and a fourth locking part 64 is provided on the side wall of the clearance opening. The travel limiting member 5 can selectively engage with the fourth locking part 64 through any one of the first locking part 53, the second locking part 54 and the third locking part 55.

[0029] In one embodiment, the mating surface between the limiting part and the contacting part is an inclined surface.

[0030] In one embodiment, the first locking portion 53, the second locking portion 54, and the third locking portion 55 are all slots, and the fourth locking portion 64 is a protrusion; or, the first locking portion 53, the second locking portion 54, and the third locking portion 55 are all circular protrusions, and the fourth locking portion 64 is a slot.

[0031] In one embodiment, the drive unit 56 is provided with a mark 57 corresponding to the first locking part 53, the second locking part 54 and the third locking part 55.

[0032] In one embodiment, the rear end of the buffer 1 is provided with an inclined portion 23 for adapting to the hinge arm link.

[0033] The buffer mechanism of this invention can be used on American-style hinges and is mounted on the hinge cup. Its core lies in adjusting the buffer stroke through the relative positional change between a fixed adjuster 4 and the movable part 22 of the buffer 1. This basic structure is streamlined, simplifying the adjustment function to the core interaction of "fixed part 21 - stroke limiter 5 - movable part 22," a clever design that provides an easy-to-implement and low-cost basic solution for the adjustable design of buffer mechanisms. Compared with existing technologies, this invention eliminates the need for complex linkage mechanisms, achieving reliable multi-level adjustment solely through the cooperation of key structures on the movable part 22 of the buffer 1 and the stroke limiter 5. With fewer components and simpler operational logic, it significantly reduces manufacturing costs and assembly difficulty. Furthermore, this adjustment mechanism is not dependent on a specific layout, allowing its core concept to flexibly adapt to various hinge structures, demonstrating good versatility and adaptability.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. 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. A buffer mechanism for cabinet door hinges, characterized in that, include: A buffer, comprising a fixed part and a movable part that can approach or move away from each other during the buffering process; The movable part of the buffer is provided with a limiting part; The regulator includes a travel limiter rotatably disposed on the outside of the buffer, and its rotational position can be limited; the travel limiter maintains a fixed distance from the fixed part of the buffer; the travel limiter is provided with an abutment part; By rotating the travel limiter, it can be selectively positioned in at least two of the following working positions: In one of the working positions, the abutting portion and the limiting portion at least partially overlap in the direction of movement of the movable portion; In another working position, the abutting part and the limiting part do not overlap in the direction of movement of the moving part.

2. The buffer mechanism according to claim 1, characterized in that, The limiting part includes a first limiting part and a second limiting part that are at different distances from the buffer fixing part; The contact portion includes a first contact portion and a second contact portion that respectively cooperate with the first limiting portion and the second limiting portion; By rotating the travel limiter, it can be positioned in three working positions: In the first working position, the first abutting part and the first limiting part at least partially overlap in the moving direction of the movable part; In the second working position, the second abutting part and the second limiting part at least partially overlap in the moving direction of the movable part; In the third working position, the first contact part and the first limiting part, as well as the second contact part and the second limiting part, do not overlap in the moving direction of the movable part.

3. The buffer mechanism according to claim 1 or 2, characterized in that, The buffer includes a hydraulic cylinder and a mounting base. The mounting base is provided with a mounting groove for assembling the hydraulic cylinder. The limiting parts are located on two opposite outer sides of the mounting base, and the distances from the limiting parts on both sides to the rear end of the mounting base are different.

4. The buffer mechanism according to claim 1 or 2, characterized in that, The travel limiter is slidably fitted onto the movable part of the buffer, and the abutment part is provided on the travel limiter.

5. The buffer mechanism according to claim 1 or 2, characterized in that, The regulator includes an adjusting housing and a travel limit component; The adjusting housing is provided with a connecting groove, the bottom and rear end of which are through; The movable part of the buffer is slidably connected to the connecting groove; The connecting groove has an annular groove on the radial periphery of the fixing part, and the lower end port of the groove has the anti-air adjustment groove on both sides. The travel limit member is disposed in the slot, and the abutting part is provided on opposite sides of the travel limit member and is located in the clearance adjustment slot; The travel limit component is also provided with a drive unit, and the top of the slot is provided with a clearance opening, through which the drive unit passes and protrudes outward.

6. The buffer mechanism according to claim 5, characterized in that, The contact part can swing up and down in the air-avoidance adjustment groove, and can also protrude downwards out of the air-avoidance adjustment groove.

7. The buffer mechanism according to claim 3, characterized in that, The hydraulic cylinder and the mounting base are integrally formed.

8. The buffer mechanism according to claim 4 or 5, characterized in that, The travel limiter is provided with a first locking part, a second locking part and a third locking part, and the side wall of the clearance opening is provided with a fourth locking part. The travel limiter can selectively engage with the fourth locking part through any one of the first locking part, the second locking part and the third locking part.

9. The buffer mechanism according to claim 8, characterized in that, The drive unit is provided with markings corresponding to the first locking part, the second locking part, and the third locking part.

10. The buffer mechanism according to claim 1 or 2, characterized in that, The mating surface between the limiting part and the contacting part is an inclined surface.

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