KR100257875B1 - Electro hydraulic mounting system - Google Patents

Abstract

PURPOSE: A mounting device appropriately selects spring constant and damping value to reduce noise of a car. CONSTITUTION: A mounting device comprises a first, a second and a third lower cases(56, 66, 76), a first, a second and a third diaphragms(52, 62, 72), a first, a second and a third distributing lines(82, 84, 86), a first, a second and a third valves(92, 94, 96), a controller(100) and a calculator(110). The first, the second and the third lower cases(56, 66, 76) communicates with second gateways(48) of a first, a second and a third orifice(42, 44, 46) respectively and are fixed on the bottom of an orifice structure(40). The first, the second and the third diaphragms(52, 62, 72) are horizontally installed in the first, the second and the third lower cases(56, 66, 76) as partitions to divide the cases(56, 66, 76) into a first, a second and a third auxiliary fluid rooms(50, 60, 70) and a first, a second and a third air room(54, 65, 74) respectively. The first, the second and the third distributing lines(82, 84, 86) are connected with the first, the second and the third air rooms(54, 64, 74) respectively to guide the movement of air. The first, the second and the third valves(92, 94, 96) are installed on the first, the second and the third distributing lines(82, 84, 86) respectively to block air discharging on the first, the second and the third air rooms(54, 64, 74) respectively. The controller(100) controls the operation of the first, the second and the third valves(92, 94, 96). The calculator(110) calculates control values for the controller(100) and transmits the values to the controller(100).

Description

Electronically Controlled Liquid Mounting Device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid encapsulating mounting apparatus. In particular, the first, second and third air chambers formed on the bottom of the first, second and third lower cases are connected by a plurality of wirings, respectively. Electronically controlled liquid-sealed mounts for quiet operation by installing first, second and third valves to open and close the valves to the controller according to the situation to appropriately select spring constant values and attenuation values. Relates to a device.

In general, the engine generates left, right, up, and down vibrations due to the up and down movement of the piston and connecting rod or the rotational force applied to the crankshaft during operation. In order to block the transmission to the occupant in the cabin through the liquid supporting the bottom portion of the engine is sealed is used a liquid-mounted mounting device that absorbs shock.

1 is a view schematically showing a liquid-sealed mounting apparatus conventionally used, which is supported by a screw (not shown) protruding upward from a rubber body 10 on a bottom portion of an engine and a rubber body. The bottom surface of the (10) is formed by the upper casing (8) is formed with a liquid injection chamber 10 for exerting a buffering force, the bottom portion of the liquid injection chamber (9) and the first inlet 12 through which the liquid flows; An orifice support 6 having a second entrance 14 through which the introduced liquid is discharged and having an orifice 7 in which the liquid is stored is provided.

In addition, a lower case 1 is coupled to the bottom of the upper case 8, and supports the liquid-liquid chamber 4 from the bottom while forming a space part called the air chamber 2 inside the lower case 1. The diaphragm 3 is formed. Moreover, the movable plate 5 which assists the operation of the orifice support 6 is provided in the center part of the orifice support 6.

In this way, the lower case 1 in the configured state is supported on the right bottom surface of the vehicle body, the rubber body 10 is placed on the upper portion of the engine load through the bottom portion of the engine coupled to the rubber body 10 This load pushes the liquid in the liquid injection chamber 9 downward, flows into the orifice 7 through the orifice support 6 through the first inlet 12, and the orifice 7 As the liquid flows back into the sub-liquid chamber 4 through the second entrance 14, the liquid vibrates the diaphragm 3 up and down to buffer the shock transmitted from the upper portion.

Then, when the load of the engine is relaxed, the impact force buffered in the diaphragm 3 is returned while the liquid in the liquid-liquid chamber 4 flows back into the liquid-liquid chamber 9 in the opposite direction through the orifice 7. By repeating the same process, the mount device absorbs the impact of the engine.

However, as described above, the damping value generated when the liquid enclosed in the injection liquid chamber and the auxiliary liquid chamber flows through the orifice should be a predetermined value or more, so that vibration is absorbed when the frequency of the large amplitude generated in the engine or the traveling vehicle is input. In addition, it is difficult to obtain an appropriate attenuation value, and the constant spring constant of the liquid-filled mount becomes larger than a certain value, so that the non-amplified high frequency vibration transmitted during idling operation of the engine or constant speed driving of the vehicle is inputted. At this time, the vibration and noise transmission rate was increased, there was a problem that the ride comfort is reduced.

The present invention has been made in view of this point, and the first, second, and third orifice structures having first, second and third orifices of different diameters are respectively installed in the mounting apparatus, and in communication with the plurality of orifices. The first, second and third sub-liquid chambers are formed of the first, second and third diaphragms and the first, second and third lower cases, and the bottom of the first, second and third lower cases. The first, second, and third air chambers formed in the first and second and third air chambers are connected to each other by a plurality of wires, and the first, second, and third valves are installed to open and close the wires to the controller according to the situation. Since the air in the third air chamber communicates with the outside, an object of the present invention is to select a spring constant value and a damping value appropriately so as to reduce the noise of the vehicle to achieve quiet driving.

Figure 1 is a schematic cross-sectional view of the configuration of a conventional liquid-sealed mounting device of the prior art.

Figure 2 is a cross-sectional view showing the configuration of the electronically controlled liquid-mounted mounting apparatus according to the present invention

Explanation of symbols on the main parts of the drawing

20: tightening screw 25: high body

30: upper case 32: pouring chamber

40: Orifice structure 42, 44, 46: First, second, third orifice

50, 60, 70: first, second, third sub liquid chamber 52, 62, 72: first, second, third diaphragm

54,64,74; 1st, 2nd, 3rd air chamber 56, 66, 76: 1st, 2nd, 3rd lower case

82,84,86: 1st, 2nd, 3rd wiring 92,94,96: 1st, 2nd, 3rd valve

100 control unit 110 operation unit

The purpose of the present invention is to provide a plurality of first entrances through which the liquid in the pour chamber enters, and an orifice structure having a plurality of second entrances formed on opposite sides of the first entrances, the first or second or third orifices having different diameters; A plurality of first, second and third lower cases communicating with the second entrances of the first, second and third orifices, respectively, and fixed to the bottom of the orifice structure; First, second, and third diamonds installed horizontally in the form of partitions in the first, second, and third lower cases to separate the first, second, and third sub liquid chambers from the first, second, and third air chambers. With a fram; First, second, and second wirings connected to the first, second, and third air chambers to guide the movement of air; First, second, and third valves installed on the first, second, and second wirings to block air discharge from the first, second, and third air chambers; A controller for controlling the operation of the first, second, and third valves; It is achieved by providing an electronically controlled liquid-encapsulated mounting apparatus comprising an operation unit for calculating a numerical value that can be controlled by the control unit and transmitting it to the control unit.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated in detail based on an accompanying drawing.

First, as shown in FIG. 2, when the configuration of the electronically controlled liquid encapsulated mounting apparatus of the present invention is examined, a plurality of first entrances 47 and a plurality of first entrances 47 through which the liquid in the liquid injection chamber 32 enters and exits are shown. An orifice structure (40) having a plurality of second entrances (48) formed at opposite sides and forming first, second, and third orifices (42) (44) (46) of different diameters; A plurality of first, second, and second communicating with the second entrances 48 of the first, second, and third orifices 42, 44, 46, respectively, and fixed to the bottom of the orifice structure 40; 3 lower cases 56, 66 and 76; The first, second and third lower cases 56, 66 and 76 are horizontally installed in the form of partitions so that the first, second and third sub liquid chambers 50, 60, 70 and the first First, second and third diaphragms 52, 62 and 72 separated into second and third air chambers 54, 64 and 74; First, second, and second wirings (82, 84, 86) connected to the first, second, and third air chambers (54, 64, 74) to guide the movement of air; First to be installed in the first, second, second wirings 82, 84, 86 to block the air discharge of the first, second, third air chambers 54, 64, 74 Second and third valves 92, 94 and 96; A control unit (100) for controlling the operation of the first, second, and third valves (92, 94, 96); It is composed of a calculation unit 110 for calculating a numerical value that can be controlled by the control unit 100 and transmits it to the control unit 100.

In addition, the first orifice 42 of the orifice structure 40 has a large diameter, the second orifice 44 has a medium diameter, and the third orifice 46 has a small diameter but is formed as needed. The order of number and diameter may be changed.

Meanwhile, the first, second and third valves 92 connected to the first, second and third air chambers 54, 64 and 74 are provided.

(94) (96) is blocked, the air flow in the first, second, third air chambers 54, 64, 74 is blocked, so that the first, second, third liquid chamber 50 ( The first, second and third diaphragms 52, 62 and 72 of the 60 and 70 are not operated so that the damping action cannot be exerted.

In addition, when the first, second, and third valves 92, 94, 96 connected to the first, second, and third air chambers 54, 64, 74 are opened, Since the air flow in the second and third air chambers 54, 64 and 74 is opened, the first, second and third of the first, second and third sub liquid chambers 50, 60 and 70 are The diaphragm 52, 62, 72 is in operation to be in a damping state, and is mounted through the opening of the first, second, and third valves 92, 94, 96. The spring constant and damping force of the device can be adjusted.

In this case, when all of the first, second, and third valves 52, 62, and 72 are open, the first, second, and third diaphragms 52, 62, and 72 all have a damping action. As a result, the spring constant value is lowered, and the damping value is also lowered, which is advantageous for vibrations of the fine amplitude level.

In addition, when the first valve 52 is shut off and the second and third valves 62 and 72 are open, the first diaphragm 52 does not exert a damping action, and the second and third diaphragms are not. Since the prams 62 and 72 exert a damping action, the spring constant value is medium, and the damping value is also medium, which is advantageous for vibrations of medium amplitude.

In addition, when the first and second valves 52 and 962 are shut off and only the third valve 72 is opened, the first and second diaphragms 52 and 62 do not have a damping action. Since only the three diaphragms 72 exert a damping action, the spring constant value is medium, and the damping value is high, which is advantageous for high amplitude vibration.

Hereinafter, the operation of the present invention will be described.

First, referring to the use state of the present invention, first, in the case of applying a small amplitude with a low spring constant value and a damping value, the calculation unit 11 measures the vibration and transmits it to the control unit 100. Based on the signal, the controller 110 opens all of the first, second, and third valves 92, 94, and 96 in the control unit 110.

Then, the first, second, and third air chambers 54, 64 through the first, second, and third wirings 82, 84, 86.

Air enters and exits through 74. When the vibration is applied from the engine fixed to the fastening screw 20 in such a standby state, the pressure is transmitted to the injection chamber 32 through the high-pressure rubber body 25, and the three first entrances (orifices of the orifice structure 40) 47, the liquid flows into the first, second, and third orifices 42, 44, 46, and the first, second, and third liquid chambers through the three second inlets 48. 50, 60, 70 flows into the first, second, third diaphragm 52

The damping action is performed at 62 and 72.

In the second case, when the spring constant value is medium and the damping value is also medium, the vibration of the intermediate amplitude is applied. 3 valves 94 and 96 are opened to allow air to enter and exit the second and third air chambers 64 and 74 so that the second and third diaphragms 62 and 72 exert damping action. Put it there.

When vibration is applied from the engine fixed to the fastening screw 20 in this state, the pressure is transmitted to the pouring chamber 32 through the high-pressure rubber body 25, and the two first inlets 47 of the orifice structure 40 are provided. The liquid is introduced into the second and third orifices 44 and 46 through the two, and the second and the third sub liquid chambers 60 and 70 is introduced into the second and third sub liquid chambers through the two second entrances 48. In the third diaphragm 62, 72, the damping action is performed.

On the other hand, finally, when a high amplitude vibration is applied, in which the spring constant value is medium and the decrease value is high, the control unit 100 blocks the first and second valves 92 and 94, and the third The valve 96 is opened to allow air to enter and exit the third air chamber 74 so that the third diaphragm 72 exerts a damping action.

When vibration is applied from the engine fixed to the fastening screw 20 in such a state, pressure is transmitted to the pouring chamber 32 through the high-pressure rubber body 25, and one first entrance 47 of the orifice structure 40 is provided. Liquid flows into the third orifice 46 through the second orifice 48 and enters the third sub liquid chamber 70 through one second inlet 48 to perform a damping action in the third diaphragm 72. The air in the third air chamber 74 communicates with the outside through the third wiring 86 to exert a damping action.

Here, the number of orifices formed in the orifice structure 40 is not limited to three, and the number can be added or decreased in consideration of the spring constant value and the damping value, and the related parts can be added or decreased.

Therefore, when using the electronically controlled liquid-mounted mounting apparatus according to the present invention as described above, the first, second, third orifice structure having a first, second, and third orifice having different diameters in the mounting apparatus, respectively. The first, second and third sub-liquid chambers communicating with the plurality of orifices are formed of the first, second and third diaphragms, and the first, second and third lower cases. The first, second and third air chambers formed on the bottom surfaces of the second and third lower cases are respectively connected by a plurality of wirings, and the first, second and third openings and closings of the wirings are controlled by the controller according to the situation. By installing and operating the valve, the first, second, and third air chambers are selectively communicated with each other as needed, so that the spring constant value and the attenuation value can be selected appropriately to reduce the noise of the car to achieve quiet operation. It is a useful and effective invention.

Claims (2)

A plurality of first entrances 47 through which liquid in and out of the liquid injection chamber 32 enter and a plurality of second entrances 48 are formed on the opposite side of the first entrance 47 and have different diameters. An orifice structure 40 forming three orifices 42, 44 and 46, A plurality of first, second, and second communicating with the second entrances 48 of the first, second, and third orifices 42, 44, 46, respectively, and fixed to the bottom of the orifice structure 40; 3 lower case (56) (66) (76), The first, second and third lower cases 56, 66 and 76 are horizontally installed in the form of partitions, so that the first, second and third sub liquid chambers 50, 60, 70 and the first First, second and third diaphragms 52, 62 and 72 separated into second and third air chambers 54, 64 and 74, First, second and third tube wirings 82, 84 and 86 connected to the first, second and third air chambers 54, 64 and 74 to guide the movement of air. )and, The first, second, and third tube wirings 82, 84, 86 are installed in the first, second, and third tube wirings 54, 64, 74 to control the air discharge of the first, second, and third air chambers. The first, second and third valves 92, 94 and 96, A control unit 100 for controlling the operation of the first, second and third valves 92, 94 and 96, Electronically controlled liquid-mounted mounting device, characterized in that configured by the operation unit 110 for calculating the numerical value that can be controlled by the control unit 100 and transmits to the control unit 100. The electronically controlled type of claim 1, wherein the first orifice 42 of the orifice structure 40 has a large diameter, the second orifice 44 has a medium diameter, and the third orifice 46 has a small diameter. Liquid-sealed mounting device.

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