RU159977U1 - VEHICLE BODY SUPPORT - Google Patents

Abstract

1. A vehicle body support comprising a damping element made of an elastic material and provided with two annular grooves whose bottom sections face the direction of the central hub mounted inside the damping element and provided with an axial hole for mounting the fastener, characterized in that the height ( h1) the upper annular groove is made less than the height (h2) of the lower annular groove in the zones of their maximum expansion, and the lower portion of the damping element is made free m with the possibility of changing its geometric shape, wherein said lower portion of the damping member is made conical in shape with an angle of 45-120 ° at the apex in an axial sectional konusa.2. The vehicle body support according to claim 1, characterized in that the height (h1) of the upper annular groove is 8-18 mm with a depth (S1) of 4-12 mm. The vehicle body support according to claim 1, characterized in that the height (h2) of the lower annular groove is 14-26 mm with a depth (S2) of 6-16 mm.

Description

Technical field

The invention relates to the field of mechanical engineering and is intended to provide the necessary level of noise and vibration comfort of the vehicle, namely to reduce noise and vibration transmitted from the frame to the body during the movement of the said vehicle.

State of the art

The prior art supports, located between the frame and the body, or frame and the vehicle’s cabin, located separately from the cargo compartment, and designed to reduce vibration of the body during the movement of vehicles.

The support was selected as an analogue (JP 2005-271731, publ. 2005.10.6, IPC F16F 15/08, B62D 21/09, F16F 15/08, B62D 27/04), intended for installation between the frame and the vehicle body. Known support is equipped with two elastic elements interconnected by a detachable mounting device. The lower elastic element is provided with an annular groove for connection with the support bracket.

The disadvantages of the known support include the complexity of the design.

As the closest analogue, a support was adopted (see US 2005/0073166, IPC ⁷ B62D 27/04, published 07.04.2005), intended for installation between the frame and the vehicle body. Known support is equipped with two elastic elements located on both sides of the horizontal section of the body frame. The said elastic elements contain central holes in which two cylindrical bushings are installed, each of which ends with a horizontal platform, the peripheral sections of which are bent towards the location of the said elastic elements. The upper elastic element is in contact through a horizontal platform of a cylindrical sleeve with a horizontal platform of the body. A bolt is installed in the axial holes of the bushings, connecting the support with the body and the frame of the vehicle. The upper elastic element is equipped with two annular grooves, the shape and dimensions of which are almost the same.

The disadvantages of this support include its low radial stiffness, which increases the lateral movement of the body relative to the cab and negatively affects the vibration comfort of the vehicle. To increase radial stiffness, the upper and lower platforms of cylindrical bushings were used, as well as a sleeve of a complicated configuration vulcanized in the upper elastic element, which generally complicates the construction of the support. In addition, during the movement during vertical movements of the vehicle with the above-described support, noise effects can be created - pops caused by the contact of the upper and lower elastic elements with the horizontal areas of the cylindrical bushings, which worsens the vibration comfort of the vehicle.

Utility Model Disclosure

The objective of the utility model is aimed at developing a vehicle body support that effectively reduces the vibration transmitted from the frame to the body of a moving vehicle.

The technical result obtained by the implementation of the developed support is to reduce the transmission of vibration from the frame to the body of a moving vehicle.

The specified technical result is achieved in the design of the vehicle body support containing a damping element made of elastic material and equipped with two annular grooves whose bottom sections face the location of the central sleeve installed inside the damping element and provided with an axial hole for mounting the fastener, according to a useful models, the height h1 of the upper annular groove is made less than the height h2 of the lower annular groove in the zones of their maximum expansion I, and the lower section of the damping element is made free with the possibility of changing its geometric shape, while the said lower section of the damping element is conical in shape with an angle of 45 ÷ 120 ° at the apex in the axial section of the cone.

The height h1 of the upper annular groove is 8–18 mm with a depth S1 of 4–12 mm.

The height h2 of the lower annular groove is 14–26 mm with a depth S2 of 6–16 mm.

The set of features of the claimed utility model is in a causal relationship with the achieved technical result and is presented in an independent claim.

It should be understood that specialists in this field of technology will be able to offer other options for the implementation of the support of the vehicle body and that some of its details can be changed in various other aspects, without going beyond the essence and scope of this utility model. Accordingly, the explanatory figures and a detailed description of the claimed support are illustrative, but not restrictive.

Brief Description of Explanatory Figures

FIG. 1 - schematically shows the proposed support of the vehicle body (General view).

FIG. 2 shows a section Α-A of FIG. one.

FIG. 3 - schematically shows the proposed support mounted on a vehicle.

The figures depict:

1 - support (complete);

2 - vehicle body;

3 - damping element;

3a is the lower portion of the damping element 3;

4 - the central sleeve;

5 - axial hole;

6 - vehicle frame;

7 - a cabin;

8 - upper annular groove;

9 - lower annular groove;

10 - bottom section of the upper annular groove 8;

11 - bottom section of the lower annular groove 9;

12 - frame bracket 6;

13 - washer;

14 - washer;

15 - fastener;

16 - a nut.

The support 1 of the vehicle body 2 comprises a damping element 3, inside of which there is a central sleeve 4 with an axial hole 5 for mounting the fastener 15. For a better understanding of the structure, the axial hole 5 is shown with an imaginary longitudinal axis L.

The aforementioned support 1 is intended to be placed between the frame 6 and the body 2, including the cargo compartment of the vehicle. The possibility of installing a support 1 between the frame 6 and the cabin 7 of the vehicle is not ruled out if the cabin 7 is made an independent unit separately from the cargo compartment of the body 2. Said cabin 7 is intended for the driver and passengers.

The damping element 3 is a one-piece element and contains two annular grooves, namely the upper 8 and lower 9, the corresponding bottom sections 10 and 11, which are facing the location of the Central sleeve 4.

The upper annular groove 8 is made of height h1 and depth S1, the lower annular groove 9 is made of height h2 and depth S2. Geometric parameters, in particular, the height h1 of the groove 8 should always be less than a similar parameter - the height h2 of the groove 9 in the zones of their maximum expansion. In a specific embodiment, the height h1 of the upper annular groove 8 is in the range from 8 to 18 mm at its depth S1 of 4 to 12 mm, and the height h2 of the lower annular groove 9 is in the range from 14 to 26 mm at its depth S2, component from 6 to 16 mm.

The annular grooves 8, 9 described above provide static stiffness in the Ζ direction (along the longitudinal axis L) equal to static stiffness in the radial direction Χ, Y for small or medium axial movements of the cab relative to the body (+/- 5 mm). With significant axial movements of the body, static stiffness in the Ζ direction (along the longitudinal axis L) is 3–5 times greater than the static stiffness in the radial direction Χ, Υ. The specified ratio of static stiffness makes it possible to optimally dampen vibration in the Ζ direction, transmitted from the frame 6 to the body 2, and to minimize lateral swings of the body 2 in the radial direction Χ, Υ.

The lower portion 3a of the damping element 3 is configured to change its geometric shape under loads in the в direction (along the longitudinal axis L). The mentioned lower portion 3a is made conical in shape with an angle α of 45 ÷ 120 ° at the apex in the axial section of the cone, which provides static stiffness in the Ζ direction (along the longitudinal axis L), equal to static stiffness in the radial direction Χ, Y for small or medium axial movements of the cab relative to the body (+/- 5 mm). With significant axial movements of the body, static stiffness in the Ζ direction (along the longitudinal axis L) is 3–5 times greater than the static stiffness in the radial direction Χ, Υ. The specified ratio of static stiffness makes it possible to optimally dampen vibration in the Ζ direction, transmitted from the frame 6 to the body 2, and to minimize lateral swings of the body 2 in the radial direction Χ, Υ.

The above-described central sleeve 4 can be made of an integral part of metal, in particular of steel, and the damping element 3 can be made of a rubber mixture based on natural or synthetic rubber.

The above-described support 1 is fixed in the bracket 12 of the frame 6. In a specific embodiment, the support 1 is installed with an interference fit on said bracket 12, which is fixed in the annular groove 9. The magnitude of the interference is ensured by the above-described geometry of the annular groove 9, which allows constant contact of the damping element 3 with washers 13 and 14, thereby eliminating the possibility of claps during movement of the vehicle.

The movement of the body 2 in the Ζ direction up or down limits the corresponding washer 13 or 14, in which the damping element 3 abuts. The said washers 13 and 14 are located on the side of opposite end sections of the central sleeve 4 and are connected to the last fixing connection.

As the fastening connection, a connection of the fastening element 15 to the nut 16, in particular a bolt-nut, can be used. The possibility of using another plug-in connection that performs a similar function with a similar result is not ruled out.

When the vehicle is moving, the support 1 described above reduces the vibrations transmitted from the frame 6 to the body 2, which provides comfort to the driver and passengers, and also increases the reliability of the vehicle, as vibrations can damage the components and assemblies of the vehicle.

Claims (3)

1. A vehicle body support comprising a damping element made of an elastic material and provided with two annular grooves whose bottom sections face the direction of the central hub mounted inside the damping element and provided with an axial hole for mounting the fastener, characterized in that the height ( h1) the upper annular groove is made less than the height (h2) of the lower annular groove in the zones of their maximum expansion, and the lower portion of the damping element is made free m with the possibility of changing its geometric shape, wherein said lower portion of the damping member is made conical in shape with an angle of 45-120 ° at the vertex of the cone in axial section. 2. The vehicle body support according to claim 1, characterized in that the height (h1) of the upper annular groove is 8-18 mm with a depth (S1) of 4-12 mm. 3. The vehicle body support according to claim 1, characterized in that the height (h2) of the lower annular groove is 14-26 mm with a depth (S2) of 6-16 mm.

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