Damping rubber gasket
By setting a cavity and a one-way ventilation component inside the rubber gasket and utilizing negative pressure adsorption components, the problem of poor shock absorption effect of traditional rubber gaskets is solved, and more effective vibration buffering is achieved.
Patent Information
- Application Number
- CN202520011147.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Traditional rubber washers have poor damping effect when buffering vibrations of components, especially when the components are far apart.
Design a shock-absorbing rubber gasket with an internal cavity and a one-way ventilation component. The cavity discharges gas when deformed and forms a negative pressure when recovering, which adsorbs parts through the connecting hole to reduce the vibration amplitude.
By using negative pressure adsorption, the vibration amplitude of components during vibration rebound is reduced, the support strength is enhanced, and the shock absorption effect is improved.
Smart Images
Figure CN223594825U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rubber washer field, concretely is a shock absorbing rubber washer. BACKGROUND
[0002] The rubber washer is mainly used for shock absorption of various machinery, instruments, axles and pipelines, and is mainly connected between two parts, the traditional rubber washer mainly buffers the vibration between the parts through its elasticity, since the vibration between the parts is generally reciprocating, since the traditional rubber washer can only provide elasticity to the parts, thereby leading to that the amplitude is large when the two parts are far away from each other in the vibration, so the traditional rubber washer has poor shock absorption effect.
[0003] Therefore, it is necessary to design a shock absorbing rubber washer for alleviating the above technical problems. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a shock absorbing rubber washer for overcoming the above defects in the prior art.
[0005] According to the shock absorbing rubber washer, the cavity is deformed when the rubber washer is extruded due to vibration, the space volume of the cavity is reduced, the air in the cavity is discharged outward through the one-way air passage assembly, when the rubber washer returns to the original state, the space of the cavity changes from small to large, thereby generating negative pressure, and the upper and lower end surfaces of the washer body are adsorbed to the parts connected with the washer through the communication holes, so that the parts connected with the washer are pulled away from each other, thereby reducing the vibration amplitude of the parts.
[0006] Through the above technical scheme, when the rubber washer is extruded due to vibration, the cavity is deformed, the space volume of the cavity is reduced, the air in the cavity is discharged outward through the one-way air passage assembly, when the rubber washer returns to the original state, the space of the cavity changes from small to large, thereby generating negative pressure, and the upper and lower end surfaces of the washer body are adsorbed to the parts connected with the washer through the communication holes, so that the parts connected with the washer are pulled away from each other, thereby reducing the vibration amplitude of the parts.
[0007] The utility model is further provided with that the longitudinal section of the cavity is an oval shape with the long axis perpendicular to the axis of the washer body.
[0008] Through the above technical scheme, the oval cavity is more uniform in deformation than the square cavity, can avoid the shift of the upper and lower parts of the washer body in the deformation process, and the oval cavity has a larger space than the circular cavity under the condition of a certain thickness of the washer body, thereby ensuring the size of the negative pressure in the cavity.
[0009] The utility model further sets up: the inner core is fixed with the inner core of surrounding a circle with the gasket body axis as center in the cavity inner wall, the inside hollow of inner core, the through -hole and the through -hole are through the inner core outer peripheral wall.
[0010] Through the above technical scheme, the inner core can enhance the support strength inside the gasket body, and ensure the damping effect.
[0011] The utility model further sets up: the inner core is made of annular of thermoplastic rubber of hardness range between Shore A50~Shore A100, elongation is between 150%~250%.
[0012] Through the above technical scheme, the inner core has certain hardness under certain elasticity, and the support strength is ensured.
[0013] The utility model further sets up: the gasket body upper and lower both ends are all set up with the ladder groove, the through -hole is away from the cavity one end with the ladder groove intercommunication.
[0014] Through the above technical scheme, the ladder groove increases the adsorption capacity of the upper and lower both sides end face of gasket body and parts.
[0015] The utility model further sets up: the through -hole of cavity outside fixed with the support pipe of intercommunication with the inner core, the one -way ventilation component is fixed in the support pipe.
[0016] Through the above technical scheme, the support pipe increases the support strength of through -hole, and ensures that it keeps unobstructed in the deformation process of gasket body.
[0017] The utility model further sets up: the one -way ventilation component includes the fixed cylinder of tubular, the fixed cylinder is close to the inner core one end and is fixed with the conical plugging plate of tip close to the inner core, the plugging plate center is set up with the exhaust hole of through the plugging plate, the fixed cylinder is slidably set up with the plugging ball of plugging plugging plate.
[0018] Through the above technical scheme, when the cavity is extruded and exhausts to the outside through the support pipe, the plugging ball is away from the plugging plate, so that the plugging plate keeps unobstructed, when the cavity restores to normal and inhales through the support pipe, the plugging ball blocks the plugging plate, so that the negative pressure is formed in the cavity.
[0019] The utility model further sets up: the fixed cylinder inner wall is fixed with the guide strip of setting in the plugging ball both sides, the guide strip is close to the one -way ventilation component of the plugging ball one -way ventilation component and is set up with the one -way ventilation component of the plugging ball one -way ventilation component, the fixed cylinder is away from the inner core one end and is fixed with the limit ring, and the interval exists between the outer periphery of limit ring and the fixed cylinder inner wall.
[0020] Through the technical scheme, the circular arc groove on the plugging ball can ensure the movement direction of the plugging ball, and ensure that the plugging ball can smoothly plug the plugging plate.
[0021] The beneficial effect of the utility model is: when the rubber gasket is extruded due to vibration, the cavity is deformed, the space volume of the cavity is reduced, the air in it is discharged outward through the exhaust hole in the plugging plate, when the rubber gasket restores to the original state, the space of the cavity changes from small to big, because the plugging ball plugs the plugging plate at this time, negative pressure is generated in the cavity, and the upper and lower end surfaces of the gasket body are adsorbed to the parts connected with the gasket through the communication hole, so that the parts connected with the gasket are pulled away from each other, thereby reducing the vibration amplitude of the parts. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is the structure schematic view of the utility model;
[0023] Figure 2 It is the sectional view of the utility model;
[0024] Figure 3 It is the structure schematic view of the inner core of the utility model;
[0025] Figure 4 It is the structure schematic view of the utility model Figure 3 The enlarged schematic view of B in the utility model.
[0026] In the drawings:
[0027] 10, gasket body; 11, stepped groove; 12, communication hole; 13, cavity; 20, inner core; 30, support tube; 31, plugging ball; 32, limiting ring; 34, guide bar; 35, fixed cylinder; 36, plugging plate. DETAILED DESCRIPTION
[0028] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings Figure 1 The orientation or positional relationship shown is only for the convenience of the simplified description of the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0029] In order to make the purpose and advantages of the utility model more clearly, the following will specifically describe the utility model with examples, it should be understood that the following text is only used to describe one or several specific implementation manners of the utility model, and does not strictly limit the protection scope of the utility model specifically requested, as used in this text, the terms up and down and left and right are not limited to their strict geometric definitions, but include the tolerance of reasonable and inconsistent machining or human error, and the specific features of the shock-absorbing rubber gasket will be described in detail below:
[0030] One embodiment of the utility model:
[0031] With reference to Figures 1-4 The utility model provides a shock-absorbing rubber gasket, including gasket body 10, gasket body 10 is made of natural rubber, the cavity 13 is set up in gasket body 10, the both sides of cavity 13 are all connected with eight through -holes 12 along gasket body 10 thickness direction and are connected with gasket body 10, four through -holes are connected with the outside of cavity 13 and are set up along the radial direction of gasket body 10, the outside one end of through -hole is set up and is opened, the one -way air passage component of one -way air passage is set up in through -hole, the longitudinal section of cavity 13 is the oval shape of long axis vertical to gasket body 10 axis.
[0032] With reference to Figure 3 The inner wall of cavity 13 is fixed with the inner core 20 that surrounds a circle with gasket body 10 axis as the center, the inside of inner core 20 is hollow, through -hole 12 and through -hole pass through the outer peripheral wall of inner core 20, and the inner core 20 is made of annular thermoplastic rubber with Shore A hardness of 80 and elongation of 200% of the inner core 200%, the upper and lower end surfaces of gasket body 10 are both set up with stepped groove 11, and the end of through -hole 12 away from cavity 13 is communicated with stepped groove 11.
[0033] Gasket body 10 is formed by injecting molten natural rubber into a mold, the mold cavity is provided with a vertical cylinder consistent with the shape of the communication hole 12 and a horizontal cylinder consistent with the shape of the outer through hole of the inner core 20, the parting surface of the mold is located at the middle position of the height of the gasket body 10, and when the thickness of the gasket body 10 is half, the inner core 20 is put in, at this time, the inner core 20 is closed in a circular ring shape, before injecting molten natural rubber, the inner core 20 is placed between the vertical cylinders in the mold cavity, and then molten natural rubber is injected, and after solidification, the combination of the gasket body 10 and the inner core 20 is formed.
[0034] Then a hole is formed on the inner core 20 through the communication hole 12, and a hole is formed on the inner core 20 through the through hole on the outer side of the inner core 20.
[0035] With reference to Figure 4The through hole outside the cavity 13 is fixed with the support pipe 30 communicated with the inner core 20, the one-way ventilation assembly is fixed in the support pipe 30, the one-way ventilation assembly comprises the tubular fixed cylinder 35, the one end of the fixed cylinder 35 close to the inner core 20 is fixedly provided with the conical plugging plate 36 with the pointed end close to the inner core 20, the center of the plugging plate 36 is provided with the exhaust hole penetrating through the plugging plate 36, the fixed cylinder 35 is slidably provided with the plugging ball 31 capable of plugging the plugging plate 36, the inner wall of the fixed cylinder 35 is fixedly provided with the guide strip 34 arranged on both sides of the plugging ball 31, the side of the guide strip 34 close to the plugging ball 31 is provided with the circular arc groove, the plugging ball 31 is rollingly arranged between the two circular arc grooves, the one end of the fixed cylinder 35 away from the inner core 20 is fixedly provided with the limiting ring 32, and the outer periphery of the limiting ring 32 is spaced apart from the inner wall of the fixed cylinder 35.
[0036] The rubber gasket is connected between the two parts, when the gasket body 10 is deformed due to extrusion caused by vibration, the cavity 13 is reduced in space due to the extrusion deformation of the gasket body 10, and then the air in the inner core 20 is discharged through the support pipe 30, at this time, the plugging ball 31 is away from the exhaust hole of the plugging plate 36 under the action of the airflow, and the airflow is discharged after passing through the exhaust hole of the plugging plate 36, the inner wall of the fixed cylinder 35 and the space between the outer periphery of the limiting ring 32 and the inner wall of the fixed cylinder 35.
[0037] During the vibration of the parts, when the rubber gasket is away from the parts, the gasket body 10 is resiliently rebounded, at this time, the space of the cavity 13 is increased from small to large, and then the air pressure in the cavity 13 is reduced, and then the external airflow enters the inner core 20 through the support pipe 30, and then the airflow contacts the plugging ball 31 after passing through the limiting ring 32, and then the plugging ball 31 abuts against the exhaust hole on the plugging plate 36 under the pushing of the airflow, so that the exhaust hole is plugged, and then the external airflow cannot enter the inner core 20 after the plugging ball 31 plugs the exhaust hole, so that the inner core 20 is in a negative pressure state, and then the upper and lower ends of the gasket body 10 are adsorbed to the parts adjacent to the gasket body 10 through the communication hole 12, so that the parts are pulled when the parts are away from each other, and thus the vibration amplitude of the parts is reduced.
[0038] In summary, the rubber gasket is adsorbed to the parts during the rebounding of the parts, so that the parts are pulled during the rebounding, and thus the vibration amplitude of the parts is reduced, and the inner core 20 made of thermoplastic rubber can enhance the supporting strength in the gasket body 10, and ensure the damping effect.
[0039] Those skilled in the art can clearly understand that various modifications can be made to the above embodiments without departing from the overall spirit and concept of the present application. All of them fall within the protection scope of the present application. The protection scheme of the present application is subject to the claims attached to the present application.
Claims
1. A shock absorbing rubber grommet comprising a grommet body (10), characterized by: The gasket body (10) is provided with a cavity (13) therein, and a plurality of communication holes (12) penetrating the gasket body (10) in the thickness direction of the gasket body (10) are arranged on the upper and lower sides of the cavity (13) and are in communication with the cavity (13); a plurality of through holes are arranged on the outer side of the cavity (13) in the radial direction of the gasket body (10) and are in communication with the outer side of the cavity (13), and the through holes are open at one end thereof; and a one-way air passage assembly is arranged in the through holes.
2. A shock absorbing rubber gasket according to claim 1, characterized in that: The longitudinal section of the cavity (13) is an ellipse with the long axis perpendicular to the axis of the gasket body (10).
3. A shock absorbing rubber grommet according to claim 2, wherein: An inner core (20) is fixed to the inner wall of the cavity (13) and surrounds the axis of the gasket body (10), the inner core (20) is hollow, and the communication holes (12) and the through holes penetrate the outer peripheral wall of the inner core (20).
4. A shock absorbing rubber grommet according to claim 3, wherein: The inner core (20) is an annular structure made of thermoplastic rubber with a hardness range of Shore A50~Shore A100 and an elongation of 150%~250%.
5. The shock absorbing rubber gasket of claim 1, wherein: The upper and lower end faces of the gasket body (10) are provided with stepped grooves (11), and the ends of the communication holes (12) away from the cavity (13) are in communication with the stepped grooves (11).
6. A shock absorbing rubber gasket according to claim 3, wherein: The through holes on the outer side of the cavity (13) are fixed with support pipes (30) in communication with the inner core (20), and the one-way air passage assembly is fixed in the support pipes (30).
7. A shock absorbing rubber grommet according to claim 6, wherein: The one-way air passage assembly comprises a tubular fixing cylinder (35), one end of the fixing cylinder (35) is fixedly provided with a conical plugging plate (36) with a pointed end close to the inner core (20), a gas discharge hole penetrating the plugging plate (36) is arranged at the center of the plugging plate (36), and a plugging ball (31) capable of plugging the plugging plate (36) is slidably arranged in the fixing cylinder (35).
8. A shock absorbing rubber gasket according to claim 7, characterized in that: The inner wall of the fixing cylinder (35) is fixed with guide strips (34) arranged on both sides of the plugging ball (31), one side of the guide strips (34) close to the plugging ball (31) is provided with a circular arc groove, the plugging ball (31) is rollingly arranged between the two circular arc grooves, a limiting ring (32) is fixed in one end of the fixing cylinder (35) away from the inner core (20), and a gap exists between the outer periphery of the limiting ring (32) and the inner wall of the fixing cylinder (35).