KR-102962221-B1 - DEVICE OF HYDRAULIC MOUNT FOR VEHICLE

KR102962221B1KR 102962221 B1KR102962221 B1KR 102962221B1KR-102962221-B1

Abstract

The present invention comprises a main bush mounted on the outer surface of an inner pipe and, upon joining with an outer pipe, sealing of an inner region into which fluid is injected, and a middle bush that divides the inner region into a front fluid chamber and a rear fluid chamber, and forms a fluid movement path such that, when vibration occurs along the axial direction of the inner pipe, the fluid moves selectively from the inner region to the front fluid chamber and the rear fluid chamber, or to the rear fluid chamber and the front fluid chamber, following the direction of vibration.

Inventors

김승원

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260507
Application Date: 20210818

Claims (7)

A main bush that is mounted on the outer surface of the inner pipe and, as the outer pipe is joined, causes sealing of the internal area into which fluid is injected; and The above internal region is divided into a front fluid chamber and a rear fluid chamber, and includes a middle bush that forms a fluid movement path such that, when vibration occurs along the axial direction of the inner pipe, the fluid selectively moves from the internal region to the front fluid chamber and the rear fluid chamber, or the rear fluid chamber and the front fluid chamber, following the direction of vibration generation. The above middle bush is, A middle bridge ring having a semicircular shape in the inner region and arranged so that a pair face each other; and An automotive fluid mount device characterized by having first and second middle bridge ring covers fixedly mounted to surround the outer surface of the main bushing while each of the middle bridge rings is accommodated.
In Article 1, The main bush mentioned above is, Main bridge rings arranged in pairs on the outer surface of the inner pipe; and A fluid mount device for an automobile characterized by having a main bridge ring cover that is mounted to surround the outer surface of the inner pipe while accommodating the main bridge ring, thereby forming the inner region between one side and the other side facing each other.
In Article 2, The above main bridge ring cover is, An automotive fluid mount device characterized by being made of an elastic material that allows for deformation of one side and the other side as it moves in the direction of vibration generation.
In Article 1, The above middle bush is, A hemispherical first middle plate coupled to the first middle bridge ring cover; and A fluid mount device for an automobile, further comprising: a second middle plate that is coupled to the second middle bridge ring cover, has the same shape as the first middle plate, and is mounted facing each other to divide the internal area into the front fluid chamber and the rear fluid chamber.
In Article 4, The first middle plate and the second middle plate are, Each of the above fluid movement guides forming the movement path is provided, An automotive fluid mount device characterized in that the fluid movement guides are each formed to be connected to one another so that, as the vibration generation direction occurs toward the front side of the inner pipe, the fluid in the rear fluid chamber selectively flows into the front fluid chamber via the first middle plate and the second middle plate.
In Article 5, The above-mentioned front fluid chamber is, An automotive fluid mount device characterized by an internal area that is relatively increased compared to the rear fluid chamber as the fluid contained in the rear fluid chamber flows into the interior while passing through the fluid movement guide.
In Article 1, The above first and second middle bridge ring covers are, It is provided with a rib protruding toward the outer surface of the main bushing, and An automotive fluid mount device characterized in that the above rib is formed with a plurality of micro-holes so that, while compressed and fixed to the outer surface of the main bushing, a portion of the fluid contained in the rear fluid chamber is optionally moved to the front fluid chamber.

Description

Fluid Mount Device for Vehicle The present invention relates to a fluid mount device for automobiles, and more specifically, to a fluid mount device for automobiles that can improve the sensation of aftershocks caused by the axial movement of the mount device during sudden acceleration, on uneven roads, etc. Generally, vehicles equipped with gasoline and diesel engines that use fossil fuels have many problems, such as environmental pollution caused by exhaust gases, global warming caused by carbon dioxide, and the induction of respiratory diseases due to ozone formation. Furthermore, because fossil fuels on Earth are limited, they are at risk of eventually being depleted. To solve these problems, electric vehicles have been developed, such as pure electric vehicles (EVs) that drive by powering a drive motor, hybrid electric vehicles (HEVs) that drive using both an engine and a drive motor, and fuel cell electric vehicles (FCEVs) that drive by powering a drive motor using electricity generated from a fuel cell. Typically, vehicle engines always generate structural vibrations, and vibrations occur in all directions due to the combined action of various factors, such as unevenness of the road surface while driving. In particular, vehicles using gasoline engines generate rotational torque of the crankshaft as the piston operates in the order of intake, compression, explosion, and exhaust through a four-stroke cycle, and significant vibration is generated during this process. To isolate these vibrations, development of engine mounts that support vehicle engines is continuously underway, and various studies are being conducted with the primary objective of securing insulation rates against primary vibration forces, particularly those generated in gasoline engines. However, since electric vehicles using drive motors lack the piston reciprocating motion, such as explosions, found in vehicles with gasoline engines, the role of the motor mount must change in a direction different from that of the engine mount in gasoline vehicles, such as isolating shock vibrations, jerk vibrations, driving vibrations, and gear fine noise. In particular, since electric vehicles are equipped with rigid motor modules weighing approximately 150 kg on both the front and rear wheels, the movement during driving does not occur only in the front side of the vehicle like a gasoline engine, but rather in the front and rear of the vehicle. Therefore, since the shaking vibration phenomenon during driving is often much worse, it is important to improve this. FIG. 1 is a drawing for showing the separated state of a fluid mount device for an automobile according to an embodiment of the present invention. FIG. 2 is a drawing for showing the combined state of a fluid mount device for an automobile according to an embodiment of the present invention. FIGS. 3a and 3b are drawings for showing a main bushing for a fluid mount device for an automobile according to an embodiment of the present invention. FIGS. 4a to 4c are drawings for showing a middle bushing for a fluid mount device for an automobile according to an embodiment of the present invention. FIGS. 5a to 5c are drawings for showing the combination of a main bush and a middle bush for a fluid mount device for an automobile according to an embodiment of the present invention. FIG. 6 is a drawing for showing the movement path of a fluid for an automobile fluid mount device according to an embodiment of the present invention. FIG. 7 is a drawing of a first embodiment to show changes in the front fluid chamber and rear fluid chamber for a fluid mount device for an automobile according to an embodiment of the present invention. FIG. 8 is a drawing for showing ribs and micro-holes for a fluid mount device for an automobile according to an embodiment of the present invention. FIG. 9 is a drawing of a second embodiment to show changes in the front fluid chamber and rear fluid chamber for a fluid mount device for an automobile according to an embodiment of the present invention. Figure 10 is a drawing to show the three-way characteristics of a fluid mount device for automobiles with a typical bush shape. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. The advantages and features of the present invention and the method for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited by the embodiments disclosed below but may be implemented in various different forms, and these embodiments are provided merely to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. In addition, in describing the present invention, if it is determined that related known techn