KR20040098931A - Drive Seat - Google Patents

Abstract

PURPOSE: A pressure-sensitive seat apparatus is provided to improve comfortableness, riding comfort and traveling stability by keeping the pressure balance of an air bed in changing contact pressure of the seat and the driver according to driving condition or road condition. CONSTITUTION: A pressure-sensitive seat apparatus is composed of a folding hinge(1) connected to a seat back frame(2) and a cushion frame(3); an elastic member(4) covered on the seat back frame and the cushion frame; left and right air beds(11) installed in the seat back frame and the cushion frame and contracted and expanded repeatedly in changing contact pressure of a driver; an air tank(20) storing air supplied to the left air bed or the right air bed; and a valve system(30) supplying high pressure air from the air tank to the left air bed or the right air bed, and keeping the pressure balance of the left air bed and the right air bed in contacting the driver to the seat by discharging high pressure air from the left air bed or the right air bed.

Description

Pressure sensitive seat device {Drive Seat}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat of a vehicle, and in particular, when a change in the contact body shape of a driver as well as a change in the body shape of a driver or a road surface condition of a road occurs, the equilibrium and pressure response are repeated from the pressure change. Air beds are installed on the left and right sides of the vehicle's backrest and cushion seats to improve the comfort and comfort of the seat, as well as to improve the driving stability of the vehicle. It is about.

As is well known, the driver's seat or auxiliary seat as well as the rear seat are all comprised of a back seat and a cushion seat.

Among the back seats and cushion seats of the driver's seat or auxiliary seat, as shown in FIG. 1, the back frame 2 and the cushion frame 3 are connected to the foldable hinge 1, and the back and cushion frames 2 and 3 are connected. ) Is configured to cover the elastic body 4 molded into a specific shape.

However, the elastic body 4 is not only able to cope with the rolling, pitching, etc. of the vehicle generated during driving, but also cannot cope with the driver's body shape appropriately.

In addition, the elastic body 4 is designed to contact the driver locally, the elastic body 4 did not adequately respond to the pressure change of the seat applied during operation, that is, the pressure change applied from the driver's contact, As a result, the driver had a problem that the driving posture is biased in either direction depending on the driving condition of the vehicle or the road surface condition of the road.

In addition, when the driving posture bias occurs repeatedly during long-term driving, the driver was forced to feel a considerable tiredness due to an uneasy riding feeling, which was soon followed by a disability that acts as a obstacle for safe driving.

Accordingly, the present invention has been made to solve the conventional problems as described above, the object of the present invention, after installing an air bed on the left and right sides of the backrest and cushion seat of the vehicle, respectively, expansion and contraction of the airbed Is controlled by the air flow control valve system which is driven from the change of the contact pressure between the seat and the driver according to the change of the driver's posture, so that the contact pressure between the seat and the driver is changed from the driving condition of the vehicle or the road surface condition of the vehicle. Pressure-sensitive seat device that improves the comfort of the vehicle and improves the driving stability of the vehicle by repeating the equilibrium state and pressure response of the airbed when the pressure change occurs. Is to provide.

1 is a schematic configuration diagram of a conventional sheet;

2 is a schematic configuration diagram of a pressure sensitive sheet device of the present invention.

Figure 3 is an equilibrium state diagram of the pressure-sensitive sheet at the start-up of the present invention.

Figure 4 is a non-equilibrium condition state diagram of the pressure-sensitive sheet at start-up of the present invention.

Figure 5 is an operating state in which the pressure response of the seat proceeds in non-equilibrium conditions at start-up of the present invention.

Figure 6 is an operating state in which the pressure balance of the seat proceeds after the non-equilibrium condition at start-up of the present invention.

Figure 7 is an operating state in which the pressure of the airbed down after the equilibrium condition of the present invention.

8 is an operating state in which a plurality of air beds of the present invention maintain an equilibrium condition.

* Description of the symbols for the main parts of the drawings *

11; Left airbed 12; Right airbed

20; Air tank 30; Valve system

40; An airflow controller 41; cylinder

42; First piston 42a; Drain flow path

43; First spring 50; Air supply control unit

51; Actuator 52; 2nd piston

53; Second spring 60; Air pressure reducing section

71-85; 1st to 15th flow paths

79a, 80a, 82a, 83a, 84a, 85a; 1st to 6th check valve

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

For reference, the drawings referred to below will be described with the same reference numerals for the same parts as in the prior art for convenience of description.

Figure 2 is a schematic configuration diagram of a pressure-sensitive sheet device according to an embodiment of the present invention, Figure 3 is a state diagram of the equilibrium condition of the pressure-sensitive sheet at the start-up of the present invention, Figure 4 is a pressure on the start-up of the present invention A non-equilibrium condition state diagram of the sensitive sheet.

5 is an operating state diagram in which the pressure correspondence of the sheet in the non-equilibrium condition at start-up of the present invention, Figure 6 is an operating state diagram of the pressure balance of the sheet proceeds after the non-equilibrium condition at the start-up of the present invention.

7 is an operating state diagram in which the pressure of the airbed is down after the equilibrium condition of the present invention, Figure 8 is an operating state diagram in which a plurality of airbeds of the present invention maintain the equilibrium condition.

As shown in Figs. 2 to 8, the back frame 2 and the cushion frame 3 are connected to the folding hinge 1, and the elastic body molded in a specific shape on the back support and the cushion frame 2 and 3, respectively. In a typical vehicle seat apparatus in which (4) is covered, the left and right airbeds respectively installed on the backrest frame 2 and the cushion frame 2 to repeat contraction and expansion from pressure changes due to driver contact ( air bed) 11, 12; An air tank 20 for storing air to be supplied to the air beds 11 and 12 on the left or right side; And supply and control the high pressure air stored in the air tank 20 to the left and right air beds 11 and 12 as well as discharge the high pressure air supplied to the left or right air beds 11 and 12 to the atmosphere. A valve system 30 for converting the non-equilibrium condition of the left and right air beds 11 and 12 according to the driver's seat contact pressure into an equilibrium condition; It characterized in that the connection configuration.

According to another aspect, the valve system 30 is configured such that the left or right side air is applied when the driver's seat contact pressure is changed so that the left or right airbed 11, 12 is converted to an unbalanced condition. Airflow control unit 40 for controlling the flow of air to convert the bed (11) (12) to the equilibrium condition, the air bed on the left or right side that is driven from the start-up of the vehicle, the seat contact pressure of the driver is applied ( 11) 12, the air supply control unit 50 for controlling the high-pressure air supply stored in the air tank 20, and the driver's seat contact pressure is applied low and the left and right air beds 11, 12 to maintain the equilibrium condition. An air pressure reducing unit 60 for supplying low pressure air to the air flow control unit 40 during the holding; It is characterized by the configuration.

According to another aspect, the air flow control unit 40, the first to fourth flow paths 71, 72, 73, 74, connected to the left and right air beds 11, 12, air tank ( The first and second check valves 79a and 80a branching from the sixth and seventh flow paths 76 and 77 and the draining eighth flow path 78 branched from the fifth flow path 75 of the 20. The third and fourth check valves through the eleventh flow path 81 which forms the air pressure reducing unit 60 while branching from the ninth and tenth flow paths 79 and 80 and the fifth flow path 75 having the The twelfth and thirteenth flow paths 82 and 83 having 82a and 83a and the fourteenth and fifteenth flow paths 84 and 85 having fifth and sixth check valves 84a and 85a It was configured to be connected.

According to another aspect, the airflow control unit 40 includes a plurality of flow paths 71, 72, 73, 74, 76, 77, 79, 80, 82, 83, and 84. Equilibrium condition in the cylinder 41 is converted into non-equilibrium condition from the high-pressure air introduced through the air flow guide cylinder 41 and the third and fourth flow paths 73 and 74 to which the 85 is connected. When high pressure air is supplied to the air beds 11 and 12 that are in contact with each other and the contact pressure is applied, and the air beds 11 and 12 maintain an equilibrium condition, The flow path control first piston 42 having a drain flow path 42a and the air flow control first piston 42 when the left and right air beds 11 and 12 are switched to an equilibrium condition to discharge air to the atmosphere side. It is characterized by consisting of a first spring 43 for returning to the original position.

According to another aspect, the air supply control unit 50, the air bed 11 or the contact pressure is applied when the driver's contact pressure is applied to the air bed 11, 12 of the left or right side when the vehicle is started on 12) an actuator 51 for driving high pressure air stored in the air tank 20 and a high pressure stored in the air tank 20 through the fifth flow path 75 from the driving of the actuator 51. It characterized in that it comprises a second piston 52 for air supply to flow left and right to control the air supply, and a second spring 53 for returning the second piston 52 to its original position.

Referring to the operation of the embodiment of the present invention configured as described above with reference to Figures 2 to 8 as follows.

First, when the driver is sitting on the seat of the driver's seat and there is little movement while the vehicle is turned on, the left and right airbeds 11 and 12 installed in the seat of the driver's seat, that is, the backrest frame 2 maintain the equilibrium condition. Done.

Here, the above equilibrium condition means that the contact pressure of the driver acts equally to the left and right air beds 11 and 12 as shown in FIG. 3.

That is, as shown in FIG. 3, the actuator 51 configured in the air supply control unit 60 is driven from the start-up of the vehicle, and the second piston 52 is driven from the drive of the actuator 51. The five flow paths 75 are opened.

In addition, the high pressure air stored in the air tank 20 from the opening of the fifth flow path 75 is the sixth and seventh flow paths 76 branched from the fifth flow path 75 and the fifth flow path 75. The flow is guided to 77.

At this time, when the contact pressure of the driver applied to the left and right airbeds 11 and 12 is the same, the pressure change in the left and right airbeds 11 and 12 is kept constant,

The first piston 42 in the air flow guide cylinder 41 connected through the left and right air beds 11 and 12 and the first to fourth flow paths 71, 72, 73, and 74 flows left and right. The first and second flow paths 71 and 72 and the sixth and seventh flow paths 76 and 77 are blocked while the sixth and fifth flow paths are discharged from the air tank 20 through the fifth flow path 75. The high pressure air branched into the seven flow paths 76 and 76 is cut off to the left and right air beds 11 and 12.

On the other hand, when the driver's contact pressure is applied to the left or right airbed (11, 12) due to the rolling or pitching, etc. from the driving of the vehicle or the change in the attitude of the driver, as shown in FIG. Instantaneous pressure is generated in the airbeds 11 and 12 on the left or right side to which the contact pressure is applied.

At this time, the first and second check valves 79a and 80a formed in the ninth and tenth flow paths 79 and 80 are operated inside the cylinder 41 of the airflow control unit 40. As the instantaneous pressure is transmitted through the third flow path 73, the inside of the cylinder 41 included in the air flow controller 40 is switched from the equilibrium condition to the non-equilibrium condition from the instantaneous pressure.

On the other hand, when the inside of the cylinder 41 is switched from the equilibrium condition to the non-equilibrium condition as described above, the air tank 20 is connected to the air beds 11 and 12 on the left or right side to which the driver's contact pressure is applied. The stored high pressure air was allowed to enter.

That is, as shown in FIG. 5, when the inside of the cylinder 41 is switched to the non-equilibrium condition, the first piston 42 located in the cylinder 41 passes through the third flow path 73 to the inside of the cylinder 41. The air flows in one direction from the pressure introduced into the air bed, and thus, the air supply route of the air bed 11 to which the driver's contact pressure is not applied from the flow of the first piston 42, that is, the second and seventh flow paths. 72 and 77 are blocked, but the air bed 12 to which the driver's contact pressure is applied is stored in the air tank 20 through the fifth and sixth flow paths 75 and 76 and the fifth flow path 71. High pressure air is introduced.

Therefore, the air bed 12 is able to support the driver's posture by expanding the pressure corresponding to the high pressure air introduced through the first flow path 71 even if the driver's contact pressure is applied.

Meanwhile, the fourteenth and fifteenth flow paths 84 and 85 having the fifth and sixth check valves 84a and 85a are connected to the cylinder 41. As shown in FIG. The valve 84a is closed and the sixth check valve 85a is open.

At this time, the pressure in the air bed 12 supporting the driver's posture is directed to the air bed 11 in the opposite direction, that is, the left side through the fifteenth flow path 85 connected to the cylinder 41, The air bed 11 on the left side is expanded.

Here, the air having a predetermined pressure is applied to the opposite surface of the first piston 42 at the same time as the expansion of the left air bed 11, and the inside of the cylinder 41 having the first piston 42 is To maintain pressure equilibrium.

Meanwhile, when the inside of the cylinder 41 maintains the equilibrium condition as shown in FIG. 7 as described above, the first and second flow paths 71 and 72 and the sixth and seventh flows by the first piston 42. The flow paths 76 and 77 are blocked to block air supply to the left and right air beds 11 and 12.

In addition, the third and fourth check valves 82a and 83a of the twelfth and thirteenth flow passages 82 and 83 connected to the cylinder 41 are closed, and the fourteenth and fifteenth flow passages 84 and 85 are closed. The fifth and sixth check valves 84a and 85a are all opened.

At this time, the high-pressure air remaining in the left or right air beds 11 and 12 passes through the ninth and tenth flow paths 79 and 80 through the drain passages 42a formed at both ends of the first piston 42. The first and second check valves 79a and 80a formed in the ninth and tenth flow paths 79 and 80 are opened.

Therefore, the high pressure air discharged through the drain passage 42a is discharged to the atmosphere through the eighth passage 78 while passing through the ninth and tenth passages 79 and 80. The pressure in the left and right airbeds 11 and 12 is lowered from the discharge of air.

On the other hand, when the pressure in the left and right airbeds 11 and 12 is discharged to the atmosphere as described above, the left and right airbeds 11 and 12 maintain the equilibrium condition as shown in FIG.

At this time, when the contact pressure of the driver applied to the left and right airbeds 11 and 12 gradually decreases and there is no contact pressure, the driver may branch from the fifth flow path 75 connected to the air tank 20. The air pressure reducing unit 60 of the eleventh flow path 81 supplies air of very low pressure to the left and right air beds 11 and 12.

That is, when the high pressure air passing through the fifth flow path 75 from the air tank 20 flows into the eleventh flow path 81, the air pressure reducing unit 60 formed in the eleventh flow path 81 is After depressurizing the air of high pressure, it is supplied into the cylinder 41 through the twelfth and third flow passages 82 and 83 in which the third and fourth check valves 82a and 83a are opened.

Then, the cylinder 41 supplies the decompressed air to the left and right air beds 11 and 12 through the third and fourth flow paths 83 and 84, thereby providing the left and right air beds 11 and 12. Equilibrium conditions are kept at low pressure.

Meanwhile, in the exemplary embodiment of the present invention, only the airbeds 11 and 12 installed in the backrest frame 2 are described for convenience of description, and the case of the airbed installed in the cushion frame 3 is also described above. Since the operation is the same, duplicate descriptions are omitted.

As described above, according to the present invention, after installing the airbeds on the left and right sides of the backrest and the cushion seat of the vehicle, the expansion and contraction of the airbed is driven from the change of the contact pressure between the seat and the driver according to the change of the driver's attitude. Controlled by the control valve system, the air bed equilibrium and pressure response are repeated from the pressure change when the contact pressure changes between the driver's body shape as well as the vehicle's driving conditions or road surface conditions. By improving the comfort and comfort of the seat to improve the comfort of the ride, as well as to improve the running stability of the vehicle.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (5)

In a conventional vehicle seat apparatus in which a back frame and a cushion frame are connected to a folding hinge, and the elastic body molded in a specific shape is covered on the back support and the cushion frame, Left and right airbeds respectively installed on the backrest frame and the cushion frame to repeat contraction and expansion from a pressure change according to a driver's contact; An air tank storing air to be supplied to the left or right air bed; And, The left and right airbeds supply and control the high pressure air stored in the air tank as well as discharge the high pressure air supplied to the left or right airbeds to the atmosphere to balance the non-equilibrium conditions of the left and right airbeds according to the driver's seat contact pressure. Valve system for switching to; Pressure-sensitive sheet device, characterized in that the connection configuration. The method of claim 1, wherein the valve system, An airflow control unit that controls the flow of air so as to convert the left or right airbed to the equilibrium condition when the left or right airbed is changed to the non-equilibrium condition when the driver's seat contact pressure is changed, An air supply control unit which drives the vehicle from starting on and controls a high pressure air supply stored in the air tank by an air bed on the left or right side to which the driver's seat contact pressure is applied; An air pressure reducing unit for supplying low pressure air to the air flow control unit when the driver's seat contact pressure is applied low and the left and right air beds maintain an equilibrium condition; Pressure sensitive sheet device, characterized in that consisting of. The method of claim 2, wherein the air flow control unit, First to fourth flow passages connected to the left and right airbeds, Sixth and seventh flow passages branched from the fifth flow path of the air tank, 9th and 10th flow paths branching from the 8th flow path for drain, and having a 1st and 2nd check valve, A twelfth and thirteenth flow passage having third and fourth check valves through an eleventh flow passage branching from the fifth flow passage to form an air pressure reducing unit, A pressure sensitive seat device, characterized in that the fourteenth and fifteenth flow paths having fifth and sixth check valves are connected. The method of claim 2, wherein the air flow control unit, Air flow guide cylinder to which a plurality of flow paths are connected, When the equilibrium condition in the cylinder is changed from the high pressure air introduced through the third and fourth flow paths to the non-equilibrium condition, the air bed is supplied with high pressure air to the air bed to which contact pressure is applied, and when the air bed maintains the equilibrium condition, the air bed A first piston for controlling the flow path having a drain flow path so as to discharge the high-pressure air trapped in the atmosphere; And a first spring for returning the flow path control first piston to its original position when the left and right airbeds are switched to the equilibrium condition. The method of claim 2, wherein the air supply control unit, Actuator to drive the high pressure air stored in the air tank to the air bed when the contact pressure is applied when the driver's contact pressure is applied to the left or right air bed when the vehicle is started, A second piston for air supply left and right flowing so as to control the high pressure air supply stored in the air tank through a fifth flow path from the driving of the actuator; And a second spring for returning the second piston to its original position.