Damper and device

Abstract

The utility model belongs to damper technical field especially relates to damper and device, and damper includes: damping shell, and the one end of damping shell is equipped with hydraulic oil, oil needle subassembly, oil needle subassembly sets up in the damping shell, and piston subassembly, piston subassembly sets up in the damping shell and is set on oil needle subassembly, wherein, and the through -hole that can supply hydraulic oil passes between oil needle subassembly and piston subassembly is equipped with. The utility model adopts needle valve type design, realizes the accurate control to hydraulic oil flow channel through the cooperation of oil needle subassembly and piston subassembly, and then realizes stepless, linear regulation of damping force, and compact structure, convenient adjustment is applicable to a variety of need damping control's occasion.

Description

Technical Field

[0001] This utility model belongs to the field of damper technology, and particularly relates to dampers and devices. Background Technology

[0002] A damper is a device that provides resistance to motion and dissipates kinetic energy; it is widely used in furniture, construction, industrial equipment, and other fields. Common hydraulic dampers generate damping force by causing hydraulic oil to flow through specific channels as a piston moves within a cylinder. However, existing dampers often suffer from imprecise damping force adjustment and complex structures, limiting their application range and effectiveness. Utility Model Content

[0003] This utility model provides a damper and device, aiming to solve the technical problems of existing dampers, such as imprecise damping force adjustment and complex structure.

[0004] This invention is implemented by providing a damper, comprising:

[0005] A damping housing, one end of which is provided with hydraulic oil;

[0006] Oil needle assembly, the oil needle assembly being disposed within the damping housing; and

[0007] A piston assembly, wherein the piston assembly is disposed within the damping housing and sleeved on the oil needle assembly;

[0008] The oil needle assembly and the piston assembly are provided with a perforation through which the hydraulic oil can pass.

[0009] In some embodiments, the oil needle assembly includes an oil needle disposed within the damping housing, with one end of the oil needle extending out of the damping housing.

[0010] In some embodiments, the piston assembly includes a piston rod, a damping sealing plate, a damping spring, and a piston. The piston rod is disposed within the damping housing, the oil needle is disposed within the piston rod with one end extending out of the piston rod, the perforation is disposed on the piston rod, the damping spring is sleeved on the piston rod, the damping sealing plate is sleeved on the piston rod and abuts against one end of the damping spring, and the piston is sleeved on the piston rod and located at the other end of the damping spring.

[0011] In some embodiments, the oil needle assembly includes an oil needle sealing plate and an oil needle pressure plate disposed in close contact with the oil needle sealing plate. The oil needle sealing plate and the oil needle pressure plate are sleeved on the piston rod, and the oil needle sealing plate abuts against the other end of the damping spring. The piston is disposed adjacent to the oil needle pressure plate, and the piston is located on the side of the oil needle pressure plate away from the damping spring.

[0012] In some embodiments, the oil needle plate has an annular groove on the side facing the piston.

[0013] In some embodiments, the piston includes a piston plate, a piston ring, and a piston protrusion. The piston plate, the piston ring, and the piston protrusion are sequentially and tightly fitted onto the piston rod. The piston plate is disposed adjacent to the oil needle pressure plate, and the piston plate, the piston ring, and the piston protrusion are all located on the side of the oil needle pressure plate away from the damping spring.

[0014] In some embodiments, a first notch is provided on the periphery of the piston plate, and a second notch is provided on the periphery of the piston protrusion.

[0015] In some embodiments, the oil needle is threaded, and a limit ring is provided on the oil needle near the damping sealing plate; the inner side of the piston rod is provided with a threaded groove that mates with the thread.

[0016] In some embodiments, the oil needle assembly further includes a sealing ring fitted onto the oil needle and positioned between the limiting rings.

[0017] This utility model also provides a device including a damper as described in any of the preceding embodiments.

[0018] The beneficial effects achieved by this utility model are:

[0019] The damper includes a damping housing, a needle valve assembly, and a piston assembly. The piston assembly is fitted onto the needle valve assembly, and a flow channel is formed between them through a perforation. By adjusting the axial position of the needle valve assembly, the effective flow area of ​​the flow channel can be changed, thereby controlling the flow resistance of the hydraulic oil and achieving adjustable control of the damping force. This invention adopts a needle valve design, achieving precise control of the hydraulic oil flow channel through the cooperation of the needle valve assembly and the piston assembly, thus realizing stepless and linear adjustment of the damping force. It also features a compact structure, convenient adjustment, and is suitable for various applications requiring damping control. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the damper provided in an embodiment of the present invention;

[0021] Figure 2 This is an exploded view of the damper provided in this embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of a damper with the damping shell removed, provided in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the oil needle provided in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the oil seal pressing sheet provided in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the piston rod provided in an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the piston provided in an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0028] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] This utility model provides a damper, see reference. Figures 1-3 , Figure 6 ,include:

[0034] A damping housing 100, one end of which is provided with hydraulic oil;

[0035] Oil needle assembly, the oil needle assembly being disposed within the damping housing 100; and

[0036] A piston assembly, which is disposed within the damping housing 100 and sleeved on the oil needle assembly;

[0037] The oil needle assembly and the piston assembly are provided with a through hole 311 for the hydraulic oil to pass through.

[0038] The damping housing 100 has a cylindrical structure with hydraulic oil at one end and an open oil supply needle assembly extending from the other end, and a sealing structure to close the opening.

[0039] The needle valve assembly is located inside the damping housing 100, and the piston assembly is sleeved on the outside of the needle valve assembly, forming an annular hydraulic oil flow channel between them. A perforation 311 is provided between the needle valve assembly and the piston assembly to allow hydraulic oil to pass through. For example, at least one perforation 311 is provided on the piston assembly, which constitutes the main channel for hydraulic oil flow.

[0040] By adjusting the axial position of the needle valve assembly, hydraulic oil is forced to flow through the perforation 311, which changes the effective flow area of ​​the flow channel, thereby controlling the flow resistance of the hydraulic oil and achieving adjustable control of the damping force. This utility model adopts a needle valve design, and through the cooperation of the needle valve assembly and the piston assembly, it achieves precise control of the hydraulic oil flow channel, thereby realizing stepless and linear adjustment of the damping force. It has a compact structure, is easy to adjust, and is suitable for various occasions requiring damping control.

[0041] In some specific embodiments of this application, reference is made to Figures 1-3 The oil needle assembly includes an oil needle 210, which is disposed inside the damping housing 100, and one end of the oil needle 210 extends out of the damping housing 100.

[0042] The oil needle assembly includes an oil needle 210, which is a slender shaft structure disposed within the damping housing 100, with one end extending out of the damping housing 100. The extended end can be configured as hexagonal, slotted, or other structures that facilitate external mating. Through the extended end, it can mat with external parts, allowing the external parts to drive the oil needle 210 to move axially.

[0043] The middle section of the needle valve 210 is located inside the piston assembly, and its diameter is slightly smaller than the inner diameter of the piston assembly, forming an annular gap. When the needle valve 210 moves axially, it changes the effective flow area of ​​this annular gap. When the needle valve 210 penetrates deeper into the piston assembly, the annular gap decreases, the hydraulic oil flow resistance increases, and the damping force strengthens; conversely, when the needle valve 210 retracts outward (but does not completely retract from the piston assembly), the annular gap increases, the hydraulic oil flow resistance decreases, and the damping force weakens.

[0044] In some embodiments, the damper further includes a damping cap 400, which is fitted onto the end of the oil needle 210 that extends out of the damping housing 100.

[0045] In some specific embodiments of this application, reference is made to Figures 1-3 , Figure 6 The piston assembly includes a piston rod 310, a damping sealing plate 320, a damping spring 330, and a piston. The piston rod 310 is disposed within the damping housing 100. The oil needle 210 is disposed within the piston rod 310, with one end of the oil needle 210 extending out of the piston rod 310. The through hole 311 is disposed on the piston rod 310. The damping spring 330 is sleeved on the piston rod 310. The damping sealing plate 320 is sleeved on the piston rod 310 and abuts against one end of the damping spring 330. The piston is sleeved on the piston rod 310 and located at the other end of the damping spring 330.

[0046] The piston assembly includes a piston rod 310, a damping sealing plate 320, a damping spring 330, and a piston. The piston rod 310 is a hollow cylindrical structure that houses an oil needle 210 inside, and has at least one through hole 311 on its outer wall.

[0047] A damping spring 330 is sleeved on the outside of the piston rod 310, and a damping sealing plate 320 is sleeved on the piston rod 310 and abuts against one end of the damping spring 330. The damping sealing plate 320 is fixed to the end of the piston rod 310 and can close the opening of the damping housing 100. In some embodiments, the damping sealing plate 320 is provided with a through hole, through which one end of the oil needle 210 can extend out of the damping housing 100.

[0048] When an external force is applied to the piston rod 310, the piston assembly moves towards the bottom of the damping housing 100, and the damping spring 330 is compressed to store energy. During this process, hydraulic oil flows from one side of the piston through the perforation 311 to the other side, generating a damping force. When the external force disappears, the damping spring 330 releases its energy, pushing the piston assembly to its original position.

[0049] In some specific embodiments of this application, reference is made to Figures 1-3 The oil needle assembly includes an oil needle sealing piece 220 and an oil needle pressing piece 230 that is tightly attached to the oil needle sealing piece 220. The oil needle sealing piece 220 and the oil needle pressing piece 230 are sleeved on the piston rod 310 and the oil needle sealing piece 220 abuts against the other end of the damping spring 330. The piston is located adjacent to the oil needle pressing piece 230 and is located on the side of the oil needle pressing piece 230 away from the damping spring 330.

[0050] The oil needle assembly also includes an oil needle sealing plate 220 and an oil needle pressing plate 230, which are tightly fitted together and sleeved on the piston rod 310. The oil needle sealing plate 220 abuts against the other end of the damping spring 330, forming a fixed fulcrum for the damping spring 330.

[0051] The oil needle pressure plate 230 is arranged adjacent to the piston, with a small gap between them for hydraulic oil to flow. The oil needle sealing plate 220 and the oil needle pressure plate 230 are fixed to the piston rod 310 by interference fit or snap-fit ​​structure to ensure that the position remains stable during the adjustment of the oil needle 210.

[0052] By setting the oil needle sealing plate 220 and the oil needle pressing plate 230, the adjustment action of the oil needle 210 can be accurately transmitted to the piston rod 310 without affecting the overall structural stability of the piston assembly.

[0053] In some specific embodiments of this application, reference is made to Figure 5The oil needle plate 230 has an annular groove 231 on the side facing the piston. This annular groove 231 surrounds the entire circumference of the oil needle plate 230. When hydraulic oil flows from inside the piston rod 310 to the piston assembly, it first enters the annular groove 231. The annular groove 231 serves to collect and equalize pressure, allowing the hydraulic oil to be evenly distributed across the entire piston surface, avoiding vibration and noise caused by excessive local pressure. Simultaneously, the annular groove 231 also increases the flow path of the hydraulic oil, further optimizing the damping characteristics and making the change in damping force smoother and more linear.

[0054] In some specific embodiments of this application, reference is made to Figure 3 and Figure 7 The piston includes a piston plate 341, a piston ring 342, and a piston protrusion 343. The piston plate 341, the piston ring 342, and the piston protrusion 343 are sequentially and tightly fitted onto the piston rod 310. The piston plate 341 is located adjacent to the oil needle pressure plate 230, and the piston plate 341, the piston ring 342, and the piston protrusion 343 are all located on the side of the oil needle pressure plate 230 away from the damping spring 330.

[0055] The piston adopts a multi-layer composite structure, including piston plate 341, piston ring 342 and piston protrusion 343, which are sequentially and tightly fitted on piston rod 310 and fixed together by clamping force.

[0056] Piston plate 341 is located adjacent to oil needle plate 230, mainly serving as a guide and initial seal. Piston ring 342 is the intermediate layer, made of wear-resistant material, forming the main seal with the inner wall of damping housing 100. Piston flange 343 is the outermost layer, forming a stepped sealing structure.

[0057] By setting piston plate 341, piston ring 342 and piston protrusion 343, a multi-layer piston design is formed, which not only ensures good sealing performance, but also reduces motion resistance, so that the piston assembly can move smoothly within the damping housing 100.

[0058] In some specific embodiments of this application, reference is made to Figure 3 and Figure 7 The piston plate 341 has a first notch 3411 on its periphery, and the piston protrusion 343 has a second notch 3431 on its periphery.

[0059] The piston plate 341 has multiple first notches 3411 on its outer periphery, and the first notches 3411 are rectangular or arc-shaped notches evenly distributed on the circumference of the piston plate 341. The piston protrusion 343 has multiple second notches 3431 on its outer periphery, and the second notches 3431 are rectangular or arc-shaped notches evenly distributed on the circumference of the piston protrusion 343.

[0060] When the piston assembly moves, hydraulic oil can flow through the channel formed by the first notch 3411 and the second notch 3431. The first notch 3411 and the second notch 3431 not only provide a flow path for the hydraulic oil, but also optimize the flow characteristics by controlling the size and number of the first notch 3411 and the second notch 3431.

[0061] In some embodiments, the first notch 3411 is mainly distributed on the oil inlet side of the piston, and the second notch 3431 is distributed on the oil outlet side, forming a directional flow channel, which further improves the dynamic response characteristics of the damper.

[0062] In some specific embodiments of this application, reference is made to Figure 4 The oil needle 210 is provided with a thread 211, and the oil needle 210 is provided with a limit ring 212 near the damping sealing plate 320; the piston rod 310 is provided with a threaded groove that mates with the thread 211 on its inner side.

[0063] The outer surface of the oil needle 210 is provided with a thread 211, the thread pitch of which is 0.5-1.0mm, to achieve fine adjustment. A limit ring 212 is provided near the damping sealing plate 320 of the oil needle 210 to restrain the axial displacement of the oil needle 210.

[0064] The piston rod 310 has a threaded groove machined on its inner side to mate with the thread 211 of the oil needle 210. When the oil needle 210 rotates, it moves axially through the interaction between the thread 211 and the threaded groove. Furthermore, due to the constraint of the limiting ring 212, the oil needle 210 can achieve precise axial displacement.

[0065] By setting the thread 211 and the thread groove, the axial displacement of the oil needle 210 within the piston rod 310 is only the size of the thread pitch of the thread 211 for each rotation, thus achieving precise control of the position of the oil needle 210 and fine adjustment of the damping force.

[0066] In some specific embodiments of this application, reference is made to Figure 2 The oil needle assembly also includes a sealing ring 240, which is sleeved on the oil needle 210 and located between the limiting rings 212.

[0067] The needle assembly also includes a sealing ring 240, which is installed in an annular groove at the end of the needle 210. In some embodiments, two retaining rings 212 are provided, and the sealing ring 240 is disposed between the two retaining rings 212. The sealing ring 240 may be made of oil-resistant rubber or polyurethane material.

[0068] As the needle pin 210 moves axially, the sealing ring 240 maintains tight contact with the inner wall of the piston rod 310, forming a dynamic seal. The sealing ring 240 effectively prevents hydraulic oil leakage from the end of the needle pin 210, ensuring the damper's long-term stable operation. Simultaneously, the sealing ring 240 also guides the needle pin 210, ensuring it remains centered during movement and preventing seal failure due to uneven wear.

[0069] This invention provides a device including a damper as described in any of the preceding embodiments. The damper can be widely used in various devices requiring motion control. For example, in the furniture industry, it can be used in cabinet door hinges, drawer slides, etc., to achieve smooth and quiet opening and closing actions. In industrial equipment, it can be used in safety doors, machine door covers, etc., to prevent impacts caused by rapid closing.

[0070] In this embodiment, the device includes a damper, which comprises a damping housing 100, an oil needle assembly, and a piston assembly. The piston assembly is sleeved on the oil needle assembly, and a flow channel is formed between them through a perforation 311. By adjusting the axial position of the oil needle assembly, the effective flow area of ​​the flow channel can be changed, thereby controlling the flow resistance of the hydraulic oil and achieving adjustable control of the damping force. This utility model adopts a needle valve design, and through the cooperation of the oil needle assembly and the piston assembly, it achieves precise control of the hydraulic oil flow channel, thereby realizing stepless and linear adjustment of the damping force. It has a compact structure, is easy to adjust, and is suitable for various occasions requiring damping control.

[0071] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Furthermore, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A damper, characterized in that, include: A damping housing, one end of which is provided with hydraulic oil; An oil needle assembly, wherein the oil needle assembly is disposed within the damping housing; as well as A piston assembly, wherein the piston assembly is disposed within the damping housing and sleeved on the oil needle assembly; The oil needle assembly and the piston assembly are provided with a perforation through which the hydraulic oil can pass.

2. The damper according to claim 1, characterized in that, The oil needle assembly includes an oil needle disposed within the damping housing, with one end of the oil needle extending out of the damping housing.

3. The damper according to claim 2, characterized in that, The piston assembly includes a piston rod, a damping sealing plate, a damping spring, and a piston. The piston rod is disposed inside the damping housing, the oil needle is disposed inside the piston rod with one end extending out of the piston rod, the perforation is disposed on the piston rod, the damping spring is sleeved on the piston rod, the damping sealing plate is sleeved on the piston rod and abuts against one end of the damping spring, and the piston is sleeved on the piston rod and located at the other end of the damping spring.

4. The damper according to claim 3, characterized in that, The oil needle assembly includes an oil needle sealing plate and an oil needle pressure plate that is tightly attached to the oil needle sealing plate. The oil needle sealing plate and the oil needle pressure plate are sleeved on the piston rod and the oil needle sealing plate abuts against the other end of the damping spring. The piston is located adjacent to the oil needle pressure plate and is located on the side of the oil needle pressure plate away from the damping spring.

5. The damper according to claim 4, characterized in that, The oil needle pressure plate has an annular groove on the side facing the piston.

6. The damper according to claim 4, characterized in that, The piston includes a piston plate, a piston ring, and a piston protrusion. The piston plate, the piston ring, and the piston protrusion are sequentially and tightly fitted onto the piston rod. The piston plate is located adjacent to the oil needle pressure plate, and the piston plate, the piston ring, and the piston protrusion are all located on the side of the oil needle pressure plate away from the damping spring.

7. The damper according to claim 6, characterized in that, The piston plate has a first notch on its periphery, and the piston protrusion has a second notch on its periphery.

8. The damper according to claim 3, characterized in that, The oil needle is threaded, and a limit ring is provided on the oil needle near the damping sealing plate; the inner side of the piston rod is provided with a threaded groove that mates with the thread.

9. The damper according to claim 8, characterized in that, The oil needle assembly also includes a sealing ring, which is sleeved on the oil needle and located between the limiting rings.

10. An apparatus, characterized in that, Includes the damper as described in any one of claims 1-9.

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