RU136391U1 - CAR SUSPENSION SPRING MOUNTING DEVICE - Google Patents

Abstract

A device for attaching a spring strut to a car suspension, including an upper support with fastening elements to the body, in the housing of which there is an elastic element with a vulcanized central sleeve, in which a shank of the rack rod is mounted with limiters for the rebound and compression of the elastic element of the upper support mounted on the ends of the central sleeve , the casing of which consists of a mounting flange with fastening elements, a supporting plane and a conical part, the elastic element of the upper support is made with a landing socket under Ipnika and contains a reinforcing cup that divides the elastic element into two parts: an outer, insulating cup from the upper support housing and forming the upper gasket of the bearing seat, and the inner one containing the lower gasket of the bearing seat, compression buffer, cylindrical sleeve and diaphragm, rebound stop the upper support consists of a support flange, landing and cylindrical parts, the rebound buffer of the upper support has a disk-like shape and a wavy surface on one side and is installed between the support by the gloss of the housing and the support flange of the rebound limiter, the bearing support element made in the form of a spring cup and buffer support with a buffer seat An annular gap is formed by the compression and the compression stroke limiter of the elastic element, and the surface of the cylindrical sleeve is made wavy, the protrusions of which are in contact with the cylindrical part of the rebound limiter.

Description

The utility model relates to transport engineering, namely to car suspensions.

A device for attaching a spring strut of a car suspension (RF patent for the invention No. 2270762, B60G 15/00, published on 02.27.2006), comprising an upper support with fastening elements rigidly connected directly to its ring-shaped body, with the lower flanging of which is rigidly connected bearing support sleeve and to the inner surface of which an elastic insert with a vulcanized central sleeve is vulcanized, in which a shank of the rack rod is fixed with disk-shaped mounted on it at the ends of the central sleeve the limiters of the rebound stroke and the compression stroke of the elastic insert of the upper support, an annular elastic element with protrusions located between the peripheral flanging of the plate limiter of the rebound of the elastic insert and the upper flanging of the upper support body is integral with the elastic insert of the upper support and vulcanized to the upper flange of the upper support body a bearing element, made in the form of a spring cup and a buffer support and pressing the bearing to its support sleeve under the action of the strut spring, the spring cup and the buffer support of the bearing support element is made in the form of a single part of a homogeneous material with a seat for the upper part of the buffer, and in the spring cup of the bearing support element between it and the spring there is an elastic gasket in which a screw seat is made under the upper coil of the spring, a buffer located on the rod under the support of the buffer support element with the fixation in the last of its upper part.

A disadvantage of the known device for attaching a spring strut of a car suspension is insufficient vibration and noise insulation properties when damping low-amplitude high-frequency vibrations due to increased stiffness in the axial direction of the upper support of the device due to the increased in the axial direction and reduced in the radial direction size of the elastic insert of the support of the device.

The closest technical solution, selected as a prototype, is a device for attaching a spring strut to a car suspension (RF patent for utility model No. 100962, B60G 15/06, publ. 10.01.2011), including an upper support with fastening elements to the body, in the housing of which has an elastic element with a vulcanized central sleeve, in which a shank of the rack rod is fixed with limiters for the rebound and compression of the elastic element of the upper support mounted on the ends of the central sleeve, the bearing support element, you filled in the form of a spring cup and a buffer support with a buffer seat, a buffer located on the rod under the support of the buffer of the support element with its fixation in its last upper part, the upper support housing consists of a mounting flange with fastening elements, a support plane and a conical part, an elastic element the upper support is made with a bearing seat of the bearing and contains a reinforcing cup dividing the elastic element into two parts: an outer, insulating glass from the upper support housing and forming the upper gasket of the landing socket according to bearing, and the inner one containing the lower gasket of the bearing seat, the compression buffer, the cylindrical sleeve and the diaphragm, the stop limiter for the rebound of the upper support consists of a support flange, the landing and cylindrical parts and forms an annular gap with the cylindrical sleeve of the elastic element, the rebound buffer of the upper support has a disk-like a shape and a wavy surface on one side and is installed between the support plane of the housing and the support flange of the rebound limiter, the bearing support element compresses the bearing d action of the spring to the bearing housing seat of the elastic element of the upper support, and a cup spring support member holds a screw mounting seat under the upper turn of the spring.

This technical solution has the following disadvantages:

- the dimensions of the diaphragm of the elastic element in the radial direction exceed the dimensions of the diaphragm in the axial direction, which leads to increased flexibility of the upper support in the radial direction, which, in turn, negatively affects the controllability and stability of the car, especially at small steering angles;

- the compression buffer in static position is in contact with the limiter of the compression stroke and, therefore, comes into operation immediately even with a minimum compression stroke of the rack rod, as a result of which the upper support of the device has increased axial stiffness during compression, which reduces vibration - and noise-insulating properties of the upper support of the device when damping low-amplitude high-frequency oscillations.

The objective of the utility model is to create a technical solution for attaching a spring strut to a vehicle suspension, which, when used in suspension, provides improved controllability and stability of the vehicle at small driving angles of the steered wheels of the vehicle, as well as increased vibration and noise insulation properties of the device when damping low-amplitude high-frequency vibrations.

EFFECT: improved vibration and noise insulation properties of the vehicle suspension spring strut fastening device when damping low-amplitude high-frequency vibrations, as well as improved vehicle handling and stability at low steering angle.

The specified technical result is achieved due to the fact that in the fastening device of the spring strut of the car suspension, including the upper support with fastening elements to the body, in the body of which is installed an elastic element with a vulcanized central sleeve, in which the shaft end of the strut rod is mounted with central ends installed on it bushings with limiters for the rebound and compression of the elastic element of the upper support, the housing of which consists of a mounting flange with fastening elements, a supporting plane and a conical part, the other element is made with a bearing seat and contains a reinforcing cup that divides the elastic element into two parts: an outer, insulating cup from the upper support housing and forming the upper gasket of the bearing seat, and an inner one containing the lower gasket of the bearing seat, compression buffer, cylindrical a sleeve and a diaphragm, the rebound stop of which consists of a support flange, landing and cylindrical parts, the rebound buffer of which has a disk-like shape and a wavy surface l on the one hand and installed between the support plane of the housing and the support flange of the rebound stop, the bearing support element, made in the form of a spring cup and buffer support with a buffer seat, a buffer located on the rod under the support of the support element buffer with its last upper fixation part, between the compression buffer and the compression stroke limiter of the elastic element, an annular gap is formed, and the surface of the cylindrical sleeve is made wavy, the protrusions of which are in contact with the cylindrical part of the boundary Itel stroke rebound.

In FIG. 1 is a cross-sectional view of an attachment device of a spring strut of a vehicle suspension bracket; 2 - the upper support of the attachment device of the spring strut of the vehicle suspension, in FIG. 3 - horizontal section of the upper support.

A device for attaching a spring strut of a vehicle suspension 1 (Fig. 1) of a spring strut 2 of a vehicle suspension comprises: an upper support 3 with fasteners 4 to a body (not shown), a housing 5, an elastic element 6, a rebound buffer 7, a rebound limiter 8, a central sleeve 9 of the elastic element, in which the shank 10 of the rod 11 of the rack is fixed, a disk limiter for the compression stroke 12, a support element 13 with a cup 14 of the spring 15, in which (cup 14) a screw seat seat 16 is made for the upper coil of the spring 15 and the support 17 of the buffer 18 which is fixed n in the support 17 with its upper part, a bearing 19 mounted in the seat 20 of the elastic element 6 and resting on the supporting element 13.

The housing 5 (Fig. 1) of the upper support 3 of the fastening device 1 of the spring strut 2 contains a mounting flange 21 with fastening elements 4, resting on a car body (not shown), the supporting plane 22 and the conical part 23.

The elastic element 6 of the upper support 3 installed in the housing 5 comprises a seat socket 20 of the bearing 19, as well as a reinforcing glass 24 with a pad 25 of the seat socket 20 of the bearing 19, while the glass 24 divides the array of the elastic element 6 into two parts: outer 26, which in its the lower part contains the upper gasket 27 of the seating socket 20, and the inner 28, the lower part of which contains a compression buffer 29 with a wave-shaped profiled surface 30, forming an annular gap A with a limiter of compression, and the lower gasket 31 of the landing socket 20, outer - a cylindrical sleeve 32, the inner surface of which is made wavy, and part of the elastic element 6 between the buffer 29 and the sleeve 32 is made in the form of a diaphragm 33.

At the ends of the central sleeve 9 (Fig. 1) of the elastic element 6, a disk-shaped limiter of the compression stroke 12 is installed, forming an annular gap A with a wave-shaped profiled surface 30 of the compression buffer 29 of the elastic element 6, and a limiter of the rebound stroke 8 with a support flange 34 supported by a disk-shaped the shape and the undulating profiled surface 35 of the rebound buffer 7 with a flat landing part 36 and a cylindrical part 37 in contact with the protrusions of the undulating inner surface 38 (Fig. 3) of the cylindrical sleeve 32 (Fig. 1) is elastic about item 6.

The device for fastening the spring strut suspension of the car as follows.

In the vehicle’s static state, the fastening device 1 (Fig. 1), the spring strut 2 provides connection to the body of the strut 2 by rigidly attaching the upper support 3 to the body (not shown) using fasteners 4, while the forces from the spring 15 are transmitted through the support element 13 to the bearing 19 and further through the mounting socket 20 of the elastic element 6 and the mounting flange 21 of the housing 5 of the upper support 3 to the car body, and the remaining elements of the mounting device 1 are not loaded at this time.

With rectilinear uniform motion of the car on a level road, axial and radial forces are transferred to the fastening device 1 (Fig. 1) from the high-frequency low-amplitude vibrations arising due to insufficient damping qualities of low-profile tires and from the forces in the contact patch of the wheel due to small driving angles caused by disturbances from small irregularities in the roadway and uneven aerodynamic drag of the car; in this case, the combined forces are transmitted to the fastening device 1 (Fig. 1) by the spring 15 and the rod 11 of the spring strut 2 of the vehicle suspension, and the axial forces transmitted by the spring 15 are damped (absorbed) by a package of elastic gaskets 27 and 31 of the seat 20 of the elastic element 6 of the upper support 3.

The axial forces during compression, transmitted to the fastening device 1 (Fig. 1) by the rod 11 of the rack 2 cause the diaphragm 33 of the inner part 28 of the elastic element 6 to bend, while the compression buffer 29, separated by a gap A from the limiter of the compression 12, does not enter into operation and does not transmit to the elastic element 6 compressive forces from axial high-frequency low-amplitude vibrations during the compression process.

Radial forces due to the small angles of the steered wheels cause radial deformation of the diaphragm 33 of the elastic element 6 of the upper support and additionally the deformation of the protrusions of the wave-like surface 38 (Fig. 3) of the cylindrical sleeve 32 (Fig. 1) of the elastic element 6, thereby increasing the radial stiffness of the upper supports 3 of the device 1, which positively affects the controllability and stability of the car at small angles of removal of the steered wheels.

Thus, the proposed device has the best vibration and noise insulating properties when damping low-amplitude high-frequency vibrations, and also provides improved controllability and stability of controllability and stability of the car at low steering angles

Claims (1)

A device for attaching a spring strut to a car suspension, including an upper support with fastening elements to the body, in the housing of which there is an elastic element with a vulcanized central sleeve, in which a shank of the rack rod is mounted with limiters for the rebound and compression of the elastic element of the upper support mounted on the ends of the central sleeve , the casing of which consists of a mounting flange with fastening elements, a supporting plane and a conical part, the elastic element of the upper support is made with a landing socket under Ipnika and contains a reinforcing cup that divides the elastic element into two parts: an outer, insulating cup from the upper support housing and forming the upper gasket of the bearing seat, and the inner one containing the lower gasket of the bearing seat, compression buffer, cylindrical sleeve and diaphragm, rebound stop the upper support consists of a support flange, landing and cylindrical parts, the rebound buffer of the upper support has a disk-like shape and a wavy surface on one side and is installed between the support with a gloss of the housing and a support flange of the rebound stop, a bearing support element made in the form of a spring cup and a buffer support with a buffer mounting socket, a buffer located on the rod under the support of the support element buffer with its fixation in its last upper part, characterized in that between the buffer a compression gap and a limiter of the compression stroke of the elastic element, an annular gap is formed, and the surface of the cylindrical sleeve is made wavy, the protrusions of which in contact with the cylindrical part of the limiter rebound stroke.

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