A hermetically sealed rubber bushing that is easily press fitted

Abstract

The utility model discloses a kind of easily pressed rubber bushings of sealing tight, belong to rubber bushing technical field, including rubber bushing main part, its outer wall is provided with corrugated rib, the inner wall of rubber bushing main part is provided with the profiled groove of opposite hand piece, the inner wall of plastic shell and the rubber bushing main part interference connection.The utility model is provided with corrugated rib in rubber bushing main part outer wall, corrugated rib disperses stress when pressing, reduces the risk of plastic shell cracking, the profiled groove of rubber bushing main part inner wall is closely combined opposite hand piece, ensure that there is no gap in sealing;The convenience of assembly and the durability of bushing are further optimized by the taper groove of top and the fillet design of bottom;While the reinforcing sheet in annular accommodating groove improves the structural strength of bushing, and the dentate groove and reinforcing rib on plastic shell enhance the overall compression resistance;This structure not only significantly improves sealing performance, but also reduces assembly difficulty, prolongs service life, and significantly reduces the defective rate in production process.

Description

Technical Field

[0001] This utility model belongs to the field of rubber bushing technology, and in particular relates to a tightly sealed, easily press-fitted rubber bushing. Background Technology

[0002] Rubber bushings are key components widely used in automobiles, machinery, construction, electronics and other fields. Their main function is to reduce vibration and impact during mechanical movement, and improve the stability and service life of equipment.

[0003] In existing technologies, the mating surfaces of rubber bushings and plastic housings are usually designed as smooth cylindrical shapes. Because the entire outer surface is subjected to an interference fit, the plastic housing is prone to cracking due to uneven stress during press-fitting.

[0004] Meanwhile, the internal bore of the rubber bushing is prone to deformation during the pressing process, and the deformation is irregular. This not only affects the overall performance of the product, but also increases the difficulty of subsequent testing and repair.

[0005] In addition, interference fits require extremely high machining precision. Even slight deviations can lead to fit failure or cracks, resulting in a high defect rate during production and seriously affecting production efficiency and product quality. Utility Model Content

[0006] The purpose of this utility model is to provide a tightly sealed and easy-to-press rubber bushing to address the problem that the mating surfaces of rubber bushings and plastic shells are usually designed as smooth cylindrical shapes, and the plastic shell is prone to cracking during press-fitting due to uneven stress caused by the interference fit of the entire outer surface.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a tightly sealed, easily press-fit rubber bushing, comprising a rubber bushing body, the outer wall of which is provided with corrugated ribs, the inner wall of which is provided with a matching groove for the matching parts, and the inner wall of the plastic shell and the rubber bushing body being interference-fitted.

[0008] As a further description of the above technical solution:

[0009] The inner top wall of the rubber bushing body is provided with a conical groove.

[0010] As a further description of the above technical solution:

[0011] The bottom inner wall of the rubber bushing body is provided with rounded corners.

[0012] As a further description of the above technical solution:

[0013] The rubber bushing body has an annular receiving groove inside, and a reinforcing plate is provided inside the annular receiving groove. The hardness of the reinforcing plate is greater than that of the rubber bushing body.

[0014] As a further description of the above technical solution:

[0015] The plastic outer shell has several tooth-shaped grooves.

[0016] As a further description of the above technical solution:

[0017] The plastic outer shell is provided with several reinforcing ribs.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] In this invention, corrugated ribs are provided on the outer wall of the rubber bushing body. These ribs disperse stress during press-fitting, reducing the risk of cracking of the plastic shell. The contoured groove on the inner wall of the rubber bushing body fits tightly against the fitting, ensuring a gapless seal. The conical groove at the top and the rounded corners at the bottom further optimize the ease of assembly and the durability of the bushing. At the same time, the reinforcing plate in the annular receiving groove enhances the structural strength of the bushing, while the toothed grooves and reinforcing ribs on the plastic shell enhance the overall compressive strength. This structure not only significantly improves the sealing performance but also reduces the difficulty of assembly, extends the service life, and greatly reduces the defect rate in the production process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional view of a tightly sealed, easily press-fit rubber bushing.

[0022] Figure 2 This is a cross-sectional view of a tightly sealed, easily press-fit rubber bushing.

[0023] Figure 3 This is a schematic diagram of the structure of a plastic outer shell in a tightly sealed, easily press-fit rubber bushing.

[0024] Legend:

[0025] 1-Rubber bushing body; 2-Corrugated rib; 3-Contouring groove for hand parts; 4-Plastic shell; 5-Conical groove; 6-Rounded corner; 7-Annular receiving groove; 8-Reinforcing plate; 9-Toothed groove; 10-Reinforcing rib. Detailed Implementation

[0026] 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, and 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.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. 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.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Please see Figure 1-3 This utility model provides a technical solution: a tightly sealed, easily press-fit rubber bushing, comprising a rubber bushing body 1, with corrugated ribs 2 on its outer wall, and a conforming groove 3 for a matching part on the inner wall of the rubber bushing body 1. The inner wall of the plastic shell 4 is interference-fitted with the rubber bushing body 1. When the rubber bushing and the plastic shell are interference-fitted, the corrugated ribs can effectively disperse the pressing force, avoid local stress concentration, and thus reduce the risk of cracking of the plastic shell. At the same time, the structure of the corrugated ribs increases the contact area between the bushing and the shell, improving the sealing performance. The conforming groove for the matching part on the inner wall of the rubber bushing body can closely fit the shape of the matching part, ensuring that there is no gap between the rubber bushing and the matching part after assembly, thereby achieving a good sealing effect. In addition, the design of the conforming groove can also compensate for manufacturing errors to a certain extent, improving the flexibility and reliability of assembly.

[0033] The rubber bushing body 1 has a tapered groove 5 on its top inner wall. The tapered groove design makes it easier for the rubber bushing to align with and slide into the workpiece during the pressing process, reducing assembly difficulty.

[0034] The bottom inner wall of the rubber bushing body 1 is provided with a rounded corner 6. This can avoid stress concentration, improve the durability of the bushing, and also help reduce damage to the rubber bushing during assembly.

[0035] The rubber bushing body 1 has an annular receiving groove 7, and a reinforcing plate 8 is provided in the annular receiving groove 7. The hardness of the reinforcing plate 8 is greater than that of the rubber bushing body 1. The presence of the reinforcing plate can significantly improve the structural strength of the rubber bushing, especially when subjected to greater pressure or impact, effectively preventing deformation or damage to the rubber bushing, thereby extending its service life.

[0036] The plastic outer shell 4 is provided with a plurality of toothed grooves 9. The toothed grooves can increase the friction between the plastic outer shell and the rubber bushing, and prevent relative sliding between the two during use.

[0037] The plastic outer shell 4 is provided with several reinforcing ribs 10. This improves the structural strength of the plastic outer shell, enabling it to better withstand pressure during the pressing process and reducing the possibility of cracking.

[0038] Working principle: By setting corrugated ribs on the outer wall of the rubber bushing body, the corrugated ribs disperse stress during press-fitting, reducing the risk of cracking of the plastic shell. The conformal groove on the inner wall of the rubber bushing body fits tightly against the matching parts, ensuring a gapless seal. The conical groove at the top and the rounded corners at the bottom further optimize the convenience of assembly and the durability of the bushing. At the same time, the reinforcing plate in the annular receiving groove enhances the structural strength of the bushing, while the toothed grooves and reinforcing ribs on the plastic shell enhance the overall pressure resistance. This structure not only significantly improves the sealing performance, but also reduces the assembly difficulty, extends the service life, and greatly reduces the defect rate in the production process.

[0039] 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 tightly sealed, easily press-fit rubber bushing, characterized in that, It includes a rubber bushing body with corrugated ribs on its outer wall and a matching groove for the matching part on the inner wall of the rubber bushing body. The inner wall of the plastic shell and the rubber bushing body are interference-fitted.

2. The easily press-fit rubber bushing with a tight seal according to claim 1, characterized in that, The inner top wall of the rubber bushing body is provided with a conical groove.

3. The easily press-fit rubber bushing with a tight seal according to claim 2, characterized in that, The bottom inner wall of the rubber bushing body is provided with rounded corners.

4. The easily press-fit rubber bushing with a tight seal according to claim 1, characterized in that, The rubber bushing body has an annular receiving groove inside, and a reinforcing plate is provided inside the annular receiving groove. The hardness of the reinforcing plate is greater than that of the rubber bushing body.

5. A tightly sealed, easily press-fit rubber bushing according to claim 4, characterized in that, The plastic outer shell has several tooth-shaped grooves.

6. A tightly sealed, easily press-fit rubber bushing according to claim 1, characterized in that... The plastic shell is provided with several reinforcing ribs.

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