A new viscous damper

Abstract

The utility model discloses a novel viscous damper belongs to damper technical field. A novel viscous damper, including Y type ring and with Y type ring's stop plate, be equipped with elastic cavity between stop plate and Y type ring, make Y type ring have certain elasticity, when Y type ring, stop plate receive the pressure of silicon oil, can slide and buffer, the utility model discloses adopt the piston of high wear -resisting high elasticity POM material to make, through the excess interference design of cylinder body replacement traditional rubber O type sealing ring, realize the direct sealing between piston and cylinder body, the utility model discloses adopt novel sealing surface cover replacement traditional spring compensation structure, through the elastic deformation of sealing surface cover direct compensation the space of Y type ring displacement generation, effectively eliminated the invalid compression stroke of traditional spring compensation structure, make the effective working stroke ratio of damper higher, and the response speed is faster.

Description

Technical Field

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

[0002] Viscous dampers, as energy buffer devices that generate damping force through the flow of damping media (such as silicone oil), are widely used in mechanical engineering, building vibration reduction, precision instruments and other fields. Their core performance depends on sealing reliability, damping stability, durability and structural simplification.

[0003] In traditional viscous dampers, the seal between the piston and the cylinder usually relies on rubber O-rings. However, rubber materials are prone to aging, wear, or deformation under long-term high-pressure and high-frequency impact conditions, leading to leakage of the damping medium, which may affect the service life and reliability of the damper. At the same time, the rubber seals have poor compatibility with the metal cylinder and are prone to failure due to excessive compression in high-pressure scenarios, limiting the applicability of the damper.

[0004] In addition, traditional dampers often use spring assemblies for compensation structures, which compensate for the space created by the displacement of the seals through spring deformation. However, spring compensation structures have problems such as long ineffective stroke and complex assembly processes: the compression and rebound of the spring will occupy part of the motion stroke, reducing the effective working efficiency of the damper; and the installation and debugging of multiple sets of springs requires high-precision positioning, which may increase production difficulty and processing costs. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art and to propose a new type of viscous damper.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel viscous damper includes a Y-ring and a limiting plate that fits with the Y-ring, wherein an elastic cavity is provided between the limiting plate and the Y-ring.

[0008] Preferably, it further includes a cylinder body with one open end, a piston rod slidably connected inside the open end of the cylinder body, a damping medium filling the space between the piston rod and the non-open end of the cylinder body, a piston component, a piston base, and a spring sequentially attached to the side of the piston rod away from the open end of the cylinder body, a limiting plate and a Y-ring located at the end of the piston rod away from the piston component, and a sealing cover fitted onto the piston rod between the Y-ring and the open end of the cylinder body.

[0009] Preferably, the piston is provided with an oil guide groove, which is arranged in a vortex shape to connect the non-open end and the open end of the cylinder.

[0010] Preferably, the side of the piston component away from the oil guide groove is interference-fitted with the cylinder body.

[0011] Preferably, the Y-shaped ring is provided with an annular mounting groove, and the sealing face cover is provided with an annular mounting block, the annular mounting block being sleeved on the annular mounting groove.

[0012] Preferably, the end of the Y-ring furthest from the sealing face is interference-fitted with the cylinder body and piston rod.

[0013] Compared with the prior art, this utility model provides a novel viscous damper with the following advantages:

[0014] 1. This utility model uses a piston made of high wear-resistant and high-elasticity POM material. By replacing the traditional rubber O-ring seal with an interference fit design with the cylinder, a direct seal between the piston and the cylinder is achieved. POM material has excellent wear resistance, elasticity, and compatibility with metal cylinders. It is not prone to aging or deformation under high pressure conditions, effectively solving the problems of easy leakage and short life of rubber seals. At the same time, the close fit design between the piston and piston rod and the auxiliary compression effect of the spring ensure a tight fit of the sealing surface when under force, further improving the sealing stability and extending the service life of the damper.

[0015] 2. This utility model adopts a new type of sealing cover to replace the traditional spring compensation structure. The elastic deformation of the sealing cover directly compensates for the space generated by the displacement of the Y-ring. It effectively eliminates the ineffective compression stroke of the traditional spring compensation structure, making the effective working stroke of the damper account for a higher proportion and the response speed faster. At the same time, it simplifies the assembly process, reduces the number of parts, and lowers production and maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a novel viscous damper proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a novel viscous damper proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the sealing face cover of a novel viscous damper proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the piston component of a novel viscous damper proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of a Y-shaped ring for a novel viscous damper proposed in this utility model.

[0021] In the diagram: 1. Piston rod; 2. Piston base; 3. Piston component; 301. Oil guide groove; 4. Limiting plate; 5. Y-ring; 501. Annular mounting groove; 502. Elastic cavity; 6. Cylinder body; 7. Spring; 8. Sealing cover; 801. Hollowed-out groove; 802. Annular mounting block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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.

[0024] Example 1:

[0025] Reference Figure 1-5 A novel viscous damper includes a cylinder 6 with one open end, a piston rod 1 slidably connected inside the open end of the cylinder 6, and a damper medium filled between the piston rod 1 and the non-open end of the cylinder 6, specifically, the damper medium is silicone oil.

[0026] Among them, the piston rod 1, away from the opening end of the cylinder 6, is sequentially fitted with the piston component 3, the piston base 2, and the spring 7, as shown in the reference. Figure 4 The piston component 3 is provided with an oil guide groove 301, which is arranged in a vortex shape to connect the non-open end and the open end of the cylinder block 6, as shown in the figure. Figure 2 The side of the piston component 3 away from the oil guide groove 301 is press-fitted with the cylinder body 6. Specifically, the press-fitting point between the piston component 3 and the cylinder body 6 is the POM piston edge.

[0027] The piston rod 1 is attached to the side of the cylinder 6 near the opening end in sequence with the limiting plate 4, the Y-ring 5 and the sealing cover 8. The sealing cover 8 has a hollow groove 801 on its side, which makes the sealing cover 8 have a certain elasticity. It can replace the traditional spring compensation structure, reduce the ineffective stroke of the damper, simplify the assembly process and improve production efficiency. An elastic cavity 502 is provided between the limiting plate 4 and the Y-ring 5, which makes the Y-ring 5 have a certain elasticity. When the Y-ring 5 and the limiting plate 4 are subjected to the pressure of silicone oil, they can slide and buffer.

[0028] Reference Figure 3 , Figure 5 The Y-ring 5 is provided with an annular mounting groove 501, and the sealing cover 8 is provided with an annular mounting block 802. The annular mounting block 802 is fitted onto the annular mounting groove 501, which can ensure the stability of the fit between the sealing cover 8 and the Y-ring 5, that is, prevent the two from separating during the resetting process of the Y-ring 5 and the sealing cover 8.

[0029] During the pressurized use of this application, when an external force is applied to the piston rod 1, the piston rod 1 slides vertically downward along the guide of the limiting plate 4. After sliding a certain distance, the bottom surface of the piston rod 1 comes into contact with the piston part 3. At this time, the piston rod 1 will push the piston part 3 that is in contact with it to move downward synchronously.

[0030] During the downward movement of piston 3, its edge fits tightly with cylinder 6 through interference fit design, replacing the traditional rubber O-ring seal to achieve sealing and prevent the damping medium in cylinder 6 from leaking from the gap between piston 3 and cylinder 6; at this time, silicone oil can only flow through the oil guide groove 301 opened on piston 3, generating damping force during the flow process to achieve energy buffering or shock absorption effect.

[0031] As the piston 3 moves downward, the silicone oil inside the cylinder 6 is squeezed, pushing the Y-ring 5 upward. When the Y-ring 5 moves upward, the sealing cover 8, which is fixedly connected to the Y-ring 5, is deformed by pressure. It compensates for the space generated after the displacement of the Y-ring 5 through its own elasticity, ensuring a stable sealing environment inside the cylinder 6.

[0032] Reference Figures 1-5 During the reset process, when the external force disappears, the spring 7 fixed on the piston base 2 releases its elastic potential energy, and transmits the force to the piston rod 1 through the piston base 2, pushing the piston rod 1 to move upward; the piston rod 1 slides upward along the limiting plate 4 under the pushing force of the spring 7, driving the piston part 3 to reset synchronously; at this time, the interference fit between the piston part 3 and the cylinder 6 is gradually released with the movement, and the sealing pressure is gradually released;

[0033] As piston rod 1 and piston 3 reset, the silicone oil pressure in cylinder 6 decreases, and Y-ring 5 returns to its initial position under its own elasticity and the backflow of silicone oil. The pressure-deformed sealing cover 8 pops open simultaneously, restoring its initial shape and preparing for the next stress operation.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel viscous damper, characterized in that, It includes a Y-shaped ring (5) and a limiting plate (4) that fits with the Y-shaped ring (5), wherein an elastic cavity (502) is provided between the limiting plate (4) and the Y-shaped ring (5).

2. The novel viscous damper according to claim 1, characterized in that, It also includes a cylinder (6) with one end open. A piston rod (1) is slidably connected inside the open end of the cylinder (6). A damper medium is filled between the piston rod (1) and the non-open end of the cylinder (6). A piston component (3), a piston base (2), and a spring (7) are sequentially attached to the side of the piston rod (1) away from the open end of the cylinder (6). The limiting plate (4) and the Y-ring (5) are located at the end of the piston rod (1) away from the piston component (3). A sealing cover (8) fitted onto the piston rod (1) is provided between the Y-ring (5) and the open end of the cylinder (6).

3. A novel viscous damper according to claim 2, characterized in that, The piston (3) is provided with an oil guide groove (301), which is arranged in a vortex shape to connect the non-open end and the open end of the cylinder (6).

4. A novel viscous damper according to claim 3, characterized in that, The piston (3) is interference-fitted with the cylinder (6) on the side away from the oil guide groove (301).

5. A novel viscous damper according to claim 4, characterized in that, The Y-shaped ring (5) is provided with an annular mounting groove (501), and the sealing cover (8) is provided with an annular mounting block (802), which is fitted onto the annular mounting groove (501).

6. A novel viscous damper according to claim 4, characterized in that, The end of the Y-ring (5) away from the sealing cover (8) is interference-fitted with the cylinder body (6) and the piston rod (1).

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