Damping hinge

Abstract

The utility model discloses a damping hinge which comprises a cam rotating shaft provided with an arc-shaped outline surface; the damping elastic assembly comprises an elastic element and a driven element, one end of the driven element abuts against the elastic element, and the other end of the driven element is in sliding contact with the arc-shaped contour face. And the hinge mounting seat is provided with a buffer cavity and an oil liquid channel, the buffer cavity is used for guiding the damping elastic assembly to move along the straight line, and the oil liquid channel is used for conveying oil liquid for damping. The arc-shaped profile surface is arranged on the surface of the cam rotating shaft, and the driven element matched with the arc-shaped profile surface is arranged in the damping elastic assembly, so that the rotating motion of the cam rotating shaft can be converted into linear displacement of the damping elastic assembly, and the elastic element and oil are used for buffering and damping, so that the impact force generated when an instrument moves is attenuated; mute closing and hovering are achieved, instrument safety is protected, meanwhile, the size of the damping hinge is remarkably reduced through the compact structure, and therefore the space adaptability of the damping hinge in different application scenes is improved.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a damping hinge. Background Technology

[0002] Damping hinges, as key transmission components in modern industrial and household equipment, have become an indispensable part of the industrial field. Their core function is to buffer and attenuate the impact force during the movement of machinery, thereby achieving silent closure and hovering, playing a crucial role in the safety of industrial and machinery operation. However, existing damping hinges generally have some defects, either lacking precision resulting in limited buffering capacity, or being bulky and affecting appearance, and also limiting the scope of application of damping hinges. Utility Model Content

[0003] This utility model provides a damping hinge, which aims to overcome the problems existing in related technologies.

[0004] This utility model provides a damping hinge, comprising:

[0005] The cam shaft has a non-circular cross-section and a continuously undulating arc-shaped profile surface on its surface. The radial height of the arc-shaped profile surface changes periodically along the circumference.

[0006] A damping elastic component includes an elastic element and a driven element, wherein one end of the driven element abuts against the elastic element and the other end slides in contact with the arc-shaped profile surface;

[0007] The hinge mounting base is a hollow shell structure with a buffer cavity and an oil channel inside. The buffer cavity is used to guide the damping elastic component to reciprocate along a linear direction, and the oil channel is used to transport oil for shock absorption.

[0008] The damping elastic component is disposed in the buffer cavity, one end of the cam shaft is exposed outside the hinge mounting seat, and the other end extends into the hinge mounting seat and slides in contact with the driven element through the arc-shaped profile surface.

[0009] In one embodiment, the hinge mounting base is provided with a shaft mounting cavity for mounting the cam shaft, and the shaft mounting cavity and the buffer cavity are connected and exchange oil through an oil channel.

[0010] In one embodiment, one end of the driven element is located in the buffer cavity, and the other end passes through the oil channel to the shaft mounting cavity, and slides in contact with the arc-shaped contour surface;

[0011] The driven element is provided with a sliding ball or sliding roller at one end of the oil channel.

[0012] In one embodiment, the driven element has a protruding round head at one end that slides in contact with the arc-shaped contour surface.

[0013] In one embodiment, the driven element is provided with an internal flow channel communicating with the oil passage. The internal flow channel includes a first flow section near the elastic element and a second flow section near the cam shaft. The diameter of the first flow section is larger than the diameter of the second flow section.

[0014] An adjusting steel ball is provided in the first flow section. The diameter of the adjusting steel ball is smaller than the diameter of the first flow section but larger than the diameter of the second flow section.

[0015] In one embodiment, the buffer cavity is provided with a detachable locking element at the end away from the cam shaft.

[0016] In one embodiment, the diameter of the driven element at one end inside the oil channel is smaller than the diameter at the other end inside the buffer cavity;

[0017] The connection between the buffer cavity and the oil channel is provided with a limiting part to restrict the maximum stroke position of the driven element.

[0018] In one embodiment, a sealing ring is provided around one end of the cam shaft near the outlet of the shaft mounting cavity.

[0019] In one embodiment, a bearing mounting groove is provided in the shaft mounting cavity, and the cam shaft is rotatably mounted on the bearing mounting groove via a corresponding bearing.

[0020] In one embodiment, the damping hinge further includes a mounting housing that covers the hinge mounting base.

[0021] The damping hinge provided in this embodiment of the utility model, by setting an arc-shaped profile surface on the surface of the cam shaft and setting a corresponding driven element in the damping elastic component, can convert the rotational motion of the cam shaft into the linear displacement of the damping elastic component. Thus, the elastic element and oil are used for buffering and shock absorption, thereby attenuating the impact force during the movement of the instrument, achieving silent closure and hovering, protecting the safety of the instrument. At the same time, the compact structure significantly reduces the volume of the damping hinge, thereby improving the spatial adaptability of the damping hinge in different application scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a damping hinge provided for an embodiment of this utility model;

[0024] Figure 2 An exploded view of a damping hinge provided for an embodiment of this utility model;

[0025] Figure 3 A cross-sectional view of a damping hinge provided for an embodiment of this utility model;

[0026] Figure 4 A schematic diagram illustrating the fit of a cam shaft in a damping hinge, provided for an embodiment of this utility model;

[0027] Figure 5 A schematic diagram of the structure of a cam shaft in a damping hinge provided for an embodiment of this utility model;

[0028] Figure 6 A cross-sectional view of a cam shaft in a damping hinge provided for an embodiment of this utility model;

[0029] Figure 7 A schematic diagram of the driven element in a damping hinge provided for an embodiment of this utility model;

[0030] Figure 8 A cross-sectional view of a driven element in a damping hinge provided for an embodiment of this utility model;

[0031] Figure 9 A cross-sectional view of a hinge mounting base in a damping hinge provided for an embodiment of this utility model.

[0032] Markings in the image:

[0033] 10. Camshaft; 11. Arc-shaped profile surface; 12. Sealing ring; 13. Bearing;

[0034] 20. Damping elastic component; 21. Elastic element; 22. Driven element; 221. Protruding round head; 222. Internal flow channel; 223. Adjusting steel ball; 23. Sliding ball; 24. Locking component;

[0035] 30. Hinge mounting base; 31. Buffer cavity; 32. Oil passage; 33. Shaft mounting cavity; 34. Limiting part;

[0036] 40. Install the housing. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0039] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0041] Please see below. Figures 1-6 The present invention provides a damping hinge, specifically comprising:

[0042] The cam shaft 10 has a non-circular cross-section and a continuously undulating arc-shaped profile surface 11 on its surface. The radial height of the arc-shaped profile surface 11 changes periodically along the circumference.

[0043] The damping elastic component 20 includes an elastic element 21 and a driven element 22. One end of the driven element 22 abuts against the elastic element 21, and the other end slides in contact with the arc-shaped profile surface 11.

[0044] The hinge mounting base 30 is a hollow shell structure, with a buffer cavity 31 and an oil channel 32 inside. The buffer cavity 31 is used to guide the damping elastic component 20 to reciprocate along a straight direction, and the oil channel 32 is used to transport oil for shock absorption.

[0045] The damping elastic component 20 is disposed in the buffer cavity 31, one end of the cam shaft 10 is exposed outside the hinge mounting base 30, and the other end extends into the hinge mounting base 30 and slides in contact with the driven element 22 through the arc-shaped profile surface 11.

[0046] In this embodiment, by providing an arc-shaped profile surface 11 on the surface of the cam shaft 10 and a corresponding driven element 22 in the damping elastic component 20, the rotational motion of the cam shaft 10 can be converted into the linear displacement of the damping elastic component 20. This allows for buffering and shock absorption using the elastic element 21 and hydraulic fluid, thereby attenuating the impact force during instrument movement, achieving silent closure and hovering, and protecting instrument safety. Simultaneously, the compact structure significantly reduces the volume of the damping hinge, thereby improving its spatial adaptability in different application scenarios. This allows the damping hinge to be applied to a wider range of uses, such as buffering and shock absorption in instruments like glass doors, wooden doors, aluminum-framed doors, and freezer doors. Furthermore, reducing the number of components lowers the risk of hinge failure, thus improving user satisfaction and safety.

[0047] In one embodiment, the hinge mounting base 30 is provided with a shaft mounting cavity 33 for mounting the cam shaft 10. The shaft mounting cavity 33 and the buffer cavity 31 are connected and exchange oil through an oil channel 32.

[0048] In this embodiment, the cam shaft 10 is installed by setting a shaft mounting cavity 33 in the hinge mounting seat 30, and the oil channel 32 is set between the shaft mounting cavity 33 and the buffer cavity 31 to transfer oil. This ensures the flow of oil during the movement of the damping hinge, thereby ensuring the stability and durability of the shock absorption effect, improving the overall performance, and effectively lubricating the components, reducing friction loss, and extending the service life of the damping hinge.

[0049] In one embodiment, one end of the driven element 22 is located in the buffer cavity 31, and the other end passes through the oil channel 32 to the shaft mounting cavity 33 and slides in contact with the arc-shaped contour surface 11.

[0050] The driven element 22 is located below one end of the oil passage 32 and is provided with a sliding ball 23 or a sliding roller.

[0051] In this embodiment, by setting the sliding ball 23 or the sliding roller, the friction between the driven element 22 and the inner wall of the oil channel 32 is reduced, improving the durability of the damping hinge. Simultaneously, the smoothness of the damping hinge's movement is further optimized, enhancing the shock absorption effect, ensuring reliability and stability during long-term use, and improving the user experience. In specific application scenarios, the sliding ball 23 or the sliding roller can be selected according to actual needs to adapt to the cushioning requirements of different instruments.

[0052] Combination Figure 7 and Figure 8 As shown, in one embodiment, the driven element 22 has a protruding round head 221 at one end that slides in contact with the arc-shaped contour surface 11.

[0053] In this embodiment, by providing a protruding round head 221 on the driven element 22 to slide in contact with the arc-shaped contour surface 11, the stability of the sliding contact with the arc-shaped contour surface 11 can be improved, thereby ensuring that the driven element 22 can slide smoothly when it reciprocates in a straight line. At the same time, the damping stroke of the damping hinge can be increased to maximize the damping effect, thereby further enhancing the shock absorption effect of the damping hinge.

[0054] In one embodiment, the driven element 22 is provided with an internal flow channel 222 that communicates with the oil passage 32. The internal flow channel 222 includes a first flow section near the elastic element 21 and a second flow section near the cam shaft 10. The diameter of the first flow section is larger than the diameter of the second flow section.

[0055] The first flow section is equipped with an adjusting steel ball 223, the diameter of which is smaller than the diameter of the first flow section but larger than the diameter of the second flow section.

[0056] In this embodiment, by providing an internal flow channel 222 to connect the oil channel 32 in the driven element 22, setting the diameter of the first flow section near the elastic element 21 to be greater than the diameter of the second flow section near the cam shaft 10, and further providing an adjusting steel ball 223 with a diameter greater than that of the second flow section in the first flow section, the buffering effect of the damping hinge during the movement can be dynamically adjusted by using the adjusting steel ball 223.

[0057] For example, in a door-closing scenario, when the door closes rapidly, the driving force from the cam shaft 10 surges, causing a sudden increase in the flow rate of the oil within the damping hinge. At this moment, the adjusting ball 223 moves to the port of the second flow section under the high-speed impact of the oil. Since the diameter of the adjusting ball 223 is larger than the diameter of the second flow section, it does not enter the second flow section but instead forms a barrier at its port, increasing the resistance to oil flow and thus forcing a decrease in the movement rate of the damping hinge. This enhances the damping effect and improves the stability of the door closing. Conversely, when the door closes slowly, the oil flow rate is too slow to impact the adjusting ball 223, preventing it from moving and thus not obstructing the flow of oil in the second flow section. This maintains the damping effect of the damping hinge without causing the door to stall during closing due to excessive damping.

[0058] In one embodiment, a removable locking element 24 is provided at the end of the buffer cavity 31 away from the cam shaft 10.

[0059] In this embodiment, a detachable locking member 24 is provided, which allows the user to quickly replace or maintain the various components within the buffer cavity 31 according to actual needs. In a specific embodiment, the locking member 24 can be engaged with the hinge mounting base 30 via a threaded structure, thereby fixing it to the end of the buffer cavity 31 away from the cam shaft 10.

[0060] Combination Figure 9 As shown, in one embodiment, the diameter of the driven element 22 at one end inside the oil passage 32 is smaller than the diameter at one end inside the buffer cavity 31.

[0061] A limiting part 34 is provided at the connection between the buffer cavity 31 and the oil passage 32 to limit the maximum stroke position of the driven element 22.

[0062] In this embodiment, by providing the limiting part 34, the driven element 22 can be effectively prevented from exceeding the predetermined stroke range during movement, ensuring that it always operates within the safe range. It is understood that the connection between the buffer cavity 31 and the oil passage 32 is located at the end of the buffer cavity 31 closer to the cam shaft 10, while the end of the buffer cavity 31 away from the cam shaft 10 is provided with a locking member 24. Thus, through the coordinated action of the limiting part 34 and the locking member 24, the stroke of the driven element 22 can be precisely controlled.

[0063] Specifically, in the hinge mounting base 30, the sidewall of the oil passage 32 extends inward to form a limiting protrusion, and the diameters of the two ends of the driven element 22 are different, thus forming a stepped structure. The movement stroke of the driven element 22 can be limited by the limiting protrusion resisting the step.

[0064] In one embodiment, a sealing ring 12 is provided around one end of the cam shaft 10 near the outlet of the shaft mounting cavity 33.

[0065] In this embodiment, by setting a sealing ring 12 at the outlet of the rotating shaft mounting cavity 33, oil leakage can be effectively prevented, ensuring the long-lasting and stable lubrication and buffering effect inside the damping hinge.

[0066] In one embodiment, a bearing mounting groove is provided in the shaft mounting cavity 33, and the cam shaft 10 is rotatably mounted on the bearing mounting groove via the corresponding bearing 13.

[0067] In this embodiment, the cam shaft 10 is rotatably mounted on the bearing mounting groove via the bearing 13, which not only reduces frictional resistance and frictional loss, improves rotational flexibility and stability, but also extends the service life of the hinge.

[0068] In one embodiment, the damping hinge further includes a mounting housing 40 covering the hinge mounting base 30.

[0069] In this embodiment, by covering the hinge mounting base 30 with a mounting shell 40, not only is the overall structure's protection and aesthetics improved, but it also facilitates installation and maintenance, ensuring that the damping hinge operates stably in various environments and extending its service life.

[0070] In a specific embodiment, the damping hinge can be installed on the device that requires damping control through the mounting housing 40. For example, when damping control of a door is required, simply fix the cam shaft 10 and the mounting housing 40 at their respective rotating ends to achieve damping control of the door, making it open and close smoothly, reducing impact and noise, and improving the user experience.

[0071] 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. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0072] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A damping hinge, characterized in that, include: The cam shaft (10) has a non-circular cross-section and a continuously undulating arc-shaped profile surface (11) on its surface. The radial height of the arc-shaped profile surface (11) changes periodically along the circumference. The damping elastic component (20) includes an elastic element (21) and a driven element (22), wherein one end of the driven element (22) abuts against the elastic element (21) and the other end slides in contact with the arc-shaped profile surface (11); The hinge mounting base (30) is a hollow shell structure with a buffer cavity (31) and an oil channel (32) inside. The buffer cavity (31) is used to guide the damping elastic component (20) to reciprocate in a straight line, and the oil channel (32) is used to transport oil for shock absorption. The damping elastic component (20) is disposed in the buffer cavity (31), one end of the cam shaft (10) is exposed outside the hinge mounting base (30), and the other end extends into the hinge mounting base (30) and slides in contact with the driven element (22) through the arc-shaped profile surface (11).

2. The damping hinge according to claim 1, characterized in that, The hinge mounting base (30) is provided with a shaft mounting cavity (33) for mounting the cam shaft (10). The shaft mounting cavity (33) and the buffer cavity (31) are connected and transmit oil through an oil channel (32).

3. The damping hinge according to claim 2, characterized in that, One end of the driven element (22) is located in the buffer cavity (31), and the other end passes through the oil channel (32) to the shaft mounting cavity (33) and slides in contact with the arc-shaped contour surface (11); The driven element (22) is provided with a sliding ball (23) or a sliding roller below one end of the oil channel (32).

4. The damping hinge according to claim 1, characterized in that, The driven element (22) has a protruding round head (221) at one end that slides in contact with the arc-shaped contour surface (11).

5. The damping hinge according to claim 1, characterized in that, The driven element (22) is provided with an internal flow channel (222) that connects to the oil passage (32). The internal flow channel (222) includes a first flow section close to the elastic element (21) and a second flow section close to the cam shaft (10). The diameter of the first flow section is larger than the diameter of the second flow section. An adjusting steel ball (223) is provided in the first flow section. The diameter of the adjusting steel ball (223) is smaller than the diameter of the first flow section and larger than the diameter of the second flow section.

6. The damping hinge according to claim 1, characterized in that, The buffer cavity (31) is provided with a detachable locking element (24) at the end away from the cam shaft (10).

7. The damping hinge according to claim 3, characterized in that, The diameter of the driven element (22) at one end inside the oil channel (32) is smaller than the diameter at one end inside the buffer cavity (31); A limiting part (34) is provided at the connection between the buffer cavity (31) and the oil channel (32) to limit the maximum stroke position of the driven element (22).

8. The damping hinge according to claim 2, characterized in that, A sealing ring (12) is provided around one end of the cam shaft (10) near the outlet of the shaft mounting cavity (33).

9. The damping hinge according to claim 2, characterized in that, The rotating shaft mounting cavity (33) is provided with a bearing mounting groove, and the cam rotating shaft (10) is rotatably mounted on the bearing mounting groove through the corresponding bearing (13).

10. The damping hinge according to claim 1, characterized in that, It also includes a mounting housing (40) that covers the hinge mounting base (30).

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