KR100461322B1 - lumber and side surpport device of seat for vehicle - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lumber and a side support device of an automobile seat, wherein a lumber support device for supporting the lumbar region and a side support device for supporting both sides of the upper body are interlocked with each other at the same time, according to the seating state of the passenger, It is an object of the present invention to provide a lumber and side support device for an automobile seat, in which the side support device is selectively operated automatically so as to comfortably support both sides of a passenger's lumbar region or upper body.

Description

Lumber and side surpport device of seat for vehicle

The present invention relates to a lumber and a side support device of an automobile seat, and more particularly, a lumber support for supporting a passenger's waist and lumbar spine, and a side support for supporting a passenger's left and right upper body surfaces, according to the seating condition of the passenger. And a lumber and side support device for an automotive seat, which are driven to provide improved comfort for a passenger.

In general, a lumber surpport device is installed inside the car seatback to support the lumbar region of the driver and passengers, and side supports are separately installed according to the advanced models of the car.

Accordingly, the passenger seated on the seat is supported by the lumbar support device, and is supported on both sides of the upper body by the side support, thereby maintaining a straight and comfortable posture.

Existing lumber support device is mostly a manual method of adjusting the protrusion angle of the support plate that can support the lumbar region inside the seatback by operating the rotary lever. Also, there is a method of pushing and pulling the support plate using a wire, and also installing an air pack. There is a method such that the injection and discharge of air is made, but these conventional devices are mostly manual and there is a disadvantage that fine adjustment is impossible.

On the other hand, the existing side support device is configured as a separate system has a disadvantage that can not be linked with the lumber support device at the same time, there is a user inconvenience to operate the lumber support device and the side support device separately.

Therefore, the present invention has been invented in view of the above, and the lumber support device for supporting the lumbar region and the side support device for supporting both sides of the upper body are interlocked at the same time, and according to the seating state of the passenger, It is an object of the present invention to provide a lumber and side support device for an automobile seat, in which the side support device is selectively operated automatically so as to comfortably support both sides of a passenger's lumbar region or upper body.

The present invention for achieving this object is:

In the lumber and side support device for a car seat comprising a support plate for lumber support and a side support support plate installed inside the seat back,

A cylindrical plate divided into four equally arranged on the rear side of the lumber support base plate; A hydraulic cylinder connected to the front plate and both plates of the cylindrical plate by using elastic means and having first and second pistons in both directions; A hydraulic pressure supply line connected to the first piston of the hydraulic cylinder and providing hydraulic pressure to the support plate for the lumber support and the support plate for the side support; A solenoid valve for opening and closing installed in a line between each of the hydraulic cylinders and a hydraulic pump providing hydraulic oil thereto; An on / off switch respectively installed at an inner position of the seatback in which the lumbar part touches and an inner position of the seatback in which both sides of the upper body touch each other to be in charge of on / off switching of the solenoid valve; Inserted into the center hole of the cylindrical plate is characterized in that it consists of a screw-type lever to push each of the front and rear and both plates at the same time.

In a preferred embodiment, the second piston of each hydraulic cylinder is integrally attached to the connecting plate curved like the arc of the cylindrical plate, characterized in that the compression spring is connected between the connecting plate and the cylindrical plate. .

1 is a schematic view showing a lumber and a side support device of a vehicle seat according to the present invention,

Figure 2 is a schematic diagram showing the connection between the disc and the hydraulic pressure providing means in the lumber and side support apparatus of the vehicle seat according to the present invention,

Figure 3 is a perspective view showing the screw lever of the configuration of the lumber and side support apparatus of the vehicle seat according to the present invention,

4A, 4B and 4C are schematic views showing a state in which a lumber and a side support device of a vehicle seat according to the present invention are driven while a passenger is seated on the seat;

<Description of the symbols for the main parts of the drawings>

10: base plate for lumber support 12: base plate for side support

14: cylindrical plate 15: spring

16: hydraulic cylinder 18: the first piston

20: second piston 22: connecting plate

24: compression spring 26: hydraulic supply line

28: hydraulic pump 30: reservoir tank

32: hydraulic oil return line 34: opening and closing solenoid valve

36: on / off switch 38: center hole

40: screw lever 42: seat back

44: rotary lever 46: screw thread

F: Front plate S: Both plates

R: back plate

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

1 is a schematic view showing a lumber and a side support device of a car seat according to the present invention, Figure 2 is a connection between the cylindrical plate and the hydraulic pressure providing means in the lumber and side support device of the car seat according to the invention Indicates.

Usually, the back support plate 10 for lumber and the back support base 12 for side support which are the basic structural means of a lumber and a side support apparatus are provided in the inside of a car seat back.

Here, the cylindrical plate 14 is divided into four equally divided in the rear space of the support plate 12 for the lumber support is arranged and installed.

At this time, in order to prevent the cylindrical plate 14 from being separated from each other, it is preferable to connect the contact surfaces of the cylindrical plate 14 by means such as a spring 15 having elastic force.

The hydraulic cylinder 16 is connected to the front plate (F) and both plates (S) of the cylindrical plate 14, each of the hydraulic cylinder 16 in both directions the first and second pistons (18, 20) The second piston 20 of each hydraulic cylinder 16 is integrally attached to the connecting plate 22, which is curved in the same way as the circular arc of the cylindrical plate 14, and the connecting plate 22 and the Between the front plate (F) and both plates (S) of the cylindrical plate 14 is connected by a compression spring (24).

Meanwhile, a hydraulic pressure supply line 26 is connected to the first piston 18 of the hydraulic cylinder 16 so as to provide hydraulic pressure to the support plate 10 for the lumber support 12 and the support plate 12 for the side support. The end of the hydraulic pressure supply line 26 is connected to the rear surface of the support plate 10 for the lumber support and the support plate 12 for the side support.

In this case, a hydraulic pump 28 is connected to each of the hydraulic cylinders 16, and a reservoir tank 30 is connected to the hydraulic pump 28, and hydraulic oil is connected between the hydraulic cylinder 16 and the reservoir tank 30. Return line 32 is connected.

In particular, the opening and closing solenoid valve 34 is installed in the connection line between each of the hydraulic cylinders 16 and the hydraulic pump 28, the on / off switch 36 which is a means for driving the opening and closing solenoid valve 34. ) Is installed at the inner position of the seatback where the lumbar region touches and the seatback where both sides of the upper body touch.

In addition, a screw lever 40 as shown in FIG. 3 is mounted to the center hole 38 of the cylindrical plate 14 so that the screw lever 40 is shown in FIGS. 4A, 4B, and 4C. As shown, the rotary lever 44 is exposed to the upper end of the seat back 42 and is installed to be rotatable and the screw thread 46 integrally formed with the rotary lever 44 and inserted into the center hole 38. ), So that the front plate (F) and the rear plate (R) and both plates (S) of each divided cylindrical plate 14 can be pushed out simultaneously.

Referring to the operation state of the lumber and side support apparatus of the vehicle seat of the present invention configured as described above are as follows.

In the state where the driver or passenger is seated on the seat, the lumbar region is usually in contact with the seatback, and as shown in FIG. 4A, the on / off switch 36 inside the seatback 42 in which the passenger's lumbar region touches is turned on. Will be

Accordingly, the opening and closing solenoid valve 34 is opened, and the hydraulic oil is provided from the hydraulic pump 28 to the hydraulic cylinder 16, wherein the first and second pistons 18 and 20 of the hydraulic cylinder 16 are provided. This forward drive will be performed.

Accordingly, the front plate of the cylindrical plate 14 while the connecting plate 22 attached to the first piston 18 compresses the compression spring 24 by advancing the first piston 18 of the hydraulic cylinder 16. The hydraulic force is applied to (F), and the hydraulic force acts along the hydraulic pressure providing line 26 as the second piston 20 moves forward, so that the lumber support base plate 10 moves forward and is tight. Will support the lumbar region.

At this time, when the upper body of the driver or the passenger is inclined to one side during the rotation of the vehicle, the on / off switch 36 installed on the inner surface of the seat back 42 which one side of the upper body of the passenger due to the contact as shown in Figures 4b to 4c. ) Will turn on.

Accordingly, as described above, the opening / closing solenoid valve 34 is turned on, and hydraulic oil is supplied from the hydraulic pump 28 to the hydraulic cylinder 16, and at the same time, the first piston 18 of the hydraulic cylinder 16 is provided. ) And the second piston 20 are driven forward.

Accordingly, the connecting plate 22 attached to the first piston 18 by advancing the first piston 18 of the hydraulic cylinder 16 compresses the compression spring 24 and both plates of the cylindrical plate 14. Hydraulic force is applied to one of the (S), the hydraulic force acts along the hydraulic providing line 26 in the advancing of the second piston 20, the side support base plate 12 is moved forward and taut user Will support one side of the upper body.

In this way, the upper body of the driver or passenger to be oriented in one direction by the rotational running of the vehicle is easily supported, thereby providing a sense of driving safety and comfort.

On the other hand, by rotating the screw lever 40 can adjust the gap between the front plate (F) and the rear plate (R), and both plates (S) of the cylindrical plate 14, which is the hydraulic cylinder By 16, it is possible to finely adjust the hydraulic force provided to the lumber and the side support supporting plates (10, 12).

That is, the hydraulic force provided by the second piston 20 of the hydraulic cylinder 16 is provided as a force pushing the cylindrical plate 14 via the connecting plate 22, in which case the interval between the cylindrical plates is widened. If the screw lever 40 is inserted and rotated through the center hole 38 of the cylindrical plate 14, the pushing hydraulic force of the second piston 20 is attenuated, and the oil pressure toward the first piston 18 is reduced. More pressure is applied.

Therefore, when the hydraulic force acts further toward the first piston 18, the lumber support or the side support support plates 10 and 12 are further advanced, which may cause the user to more firmly support the lumbar region or upper body of the user.

On the contrary, when the interval of the cylindrical plate 14 is narrowed (by rotating the screw lever 40 to be removed from the center hole of the cylindrical plate 14), the cylindrical plate 14 of the second piston 20 The pushing force is increased so that the hydraulic force acts less toward the first piston 18.

Therefore, when the hydraulic force acts less toward the first piston 18, the lumber support or the side support supporting plates 10 and 12 are finely retracted to obtain the support force of the lumbar region or the upper body desired by the user.

As described above, according to the present invention, the on / off switch is automatically switched in the state where the driver or passenger is seated on the seat, and the lumber support and the side support are automatically operated by the hydraulic force. The comfort can be greatly increased.

In addition, in the past, the lumber support and the side support were composed of separate devices, which was inconvenient to be driven manually. The convenience can be greatly improved.

Claims (2)

In the lumber and side support device for a car seat comprising a support plate for lumber support and a side support support plate installed inside the seat back, A cylindrical plate 14 divided equally into four parts disposed at a rear side of the lumber support base plate 10; A hydraulic cylinder (16) connected to the front plate (F) and both plates (S) of the cylindrical plate (14) by using elastic means and having first and second pistons (18, 20) in both directions; A hydraulic pressure supply line 26 connected to the first piston 18 of the hydraulic cylinder 16 to provide hydraulic pressure to the support plate 10 for the lumber support and the support plate 20 for the side support; An opening and closing solenoid valve 34 installed in a line between each of the hydraulic cylinders 16 and a hydraulic pump 28 providing hydraulic oil thereto; On / off switch 36 which is installed at each of the interior of the seatback 42 in contact with the lumbar portion of the passenger and the inner side of the seatback 42 in contact with both sides of the upper body to be responsible for the on / off switching of the opening and closing solenoid valve 34 )Wow; The vehicle is characterized in that the screw lever 40 is inserted into the center hole 38 of the cylindrical plate to push each of the front plate (F), the rear plate (R) and both plates (S) at the same time Lumber and side support devices for seats. The connecting plate 22, which is curved in the same manner as the circular arc of the cylindrical plate 14, is integrally attached to the second piston 20 of each hydraulic cylinder 16. Lumber and side support device for a vehicle seat, characterized in that the compression spring (24) is connected between the 22) and the cylindrical plate (14).