KR20030083144A - Structure of seat-suspension for automobile - Google Patents

Abstract

PURPOSE: A seat suspension structure for a vehicle is provided to mount an operating device to a side of a torsion bar to regulate torsional force of the torsion bar, which is set at a constant value, according to the conditions of passengers' bodies, efficiently cope with the body conditions of passengers and improve riding comfort by changing rotational displacement of the torsion bar through the operating device. CONSTITUTION: A seat suspension structure for a vehicle is composed of two pairs of linkages(14), a shock absorber(15), and a torsion bar(16). The linkages entirely perform up-and-down motions by pin-combining two link rods(13a,13b) in a cross structure. One sides of the link rods slide by a roller(10) and other sides are fixed and supported to an upper frame(11) of a seat cushion and a lower frame(12) of a floor, respectively. The shock absorber is horizontally connected between the link rods to receive displacement to the up-and-down motions of the linkage. The torsion bar is crosswise arranged at a front lower end of the seat cushion, and a side of the torsion bar is connected to lower ends of the link rods to exert torsional force to the up and down motions of the link rods and other side is extended outward through the lower frame and bent upward to exert other torsional force by rotational displacement that is varied back and forth by an operating device(20).

Description

Seat suspension structure for automobiles {Structure of seat-suspension for automobile}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat suspension structure for automobiles, and more particularly, a torsion bar that employs a shock-up server and a torsion bar, and a seat suspension structure in which a link means having a cross structure using a sliding effect of a roller is combined. The torsional force of the torsion bar is provided with an actuating means on one side of the torsion bar to adjust according to the passenger's physical condition, and by varying the rotational displacement of the torsion bar through the actuating means, it is possible to cope with the passenger's physical condition The present invention relates to a seat suspension structure for a vehicle, which can provide a more improved ride comfort as compared to the prior art.

In general, when the vehicle travels, operating noises and shocks generated by the operation of the engine or the transmission are generated and transmitted to the vehicle body, and shocks are also transmitted to the vehicle body to reduce the riding comfort.

The seat cushion is arranged to support passengers safely and comfortably within the limited space and weight of the car, together with the suspension system consisting of a spring and a pull-up server. The seat cushion is arranged in the driver's seat, the passenger seat and the rear seat according to the arrangement. According to the shape, it is classified into bench seat in the form of chaise longue and separate seat in the form of separable.

The inner structure of the seat is suitably arranged with springs to absorb vibrations, and the springs are surrounded by sponges and are configured to have an appropriate elastic force.

In this way, the seat of the vehicle is provided with various functions so that the passenger can go to the destination while maintaining a comfortable state.

However, in recent years, as the use of automobiles is rapidly increasing, user demand for convenience facilities rather than functions is expanded, and the comfort of the seat is becoming an important matter.

Accordingly, there is provided a seat suspension structure having a structure of organically combining a pull-up server, a torsion bar, and a linkage developed in the above-described dimensions.

Conventional vehicle seat suspension structure is proposed in the application number 2001-0028170, which is configured as shown in Figures 4 and 5, with reference to the accompanying drawings, the configuration and operation in detail, One side is slidable by a roller 10 and the other cross structure two link rods 13a and 13b fixedly supported on the seat cushion side upper frame 11 and the floor side lower frame 12, respectively. Two pairs of left and right linkages 14, which are vertically movable by pin coupling, and horizontally connected between the two link rods 13a and 13b to accommodate displacement due to vertical movement of the linkage 14; Between the pull-up server 15 and one of the two link bars 13a and 13b, one end is disposed between the left and right link bars 13b positioned at the lower front side, and one side is fixed on the lower frame 12. The other side is connected with the link bar 13b The torsion bar 16 is configured to exert a torsional force during the vertical movement of the linkage 14.

The seat suspension for automobiles configured as described above is transmitted to the driver with a very variable shock depending on the suspension and the road surface conditions when the vehicle is being driven. Torsion bars provide absorption and resilience.

However, the shock-up server and the torsion bar have to be set to be adjustable according to the general body condition (weight) of the general public, there is a problem that can not cope with the driver having various body conditions.

Accordingly, the present invention has been made to solve the above problems, a torsion bar employing a shock-up server and a torsion bar, and in the seat suspension structure in which the link means of the cross structure using the sliding effect of the roller is combined, the torsion is set to a constant value Corresponding to the passenger's physical condition by providing an actuating means on one side of the torsion bar to adjust the torsional force of the bar according to the passenger's physical condition, and varying the rotational displacement of the torsion bar through the actuating means. The object of the present invention is to provide a seat suspension structure for automobiles that can provide a more comfortable ride compared to existing technologies.

1 is a perspective view showing a seat suspension structure for a vehicle according to the present invention

Figure 2 is an operation showing the operating state of the torsion bar of the seat suspension structure for a vehicle according to the present invention

Figure 3 is a cross-sectional view showing the internal structure of the slider of the vehicle seat suspension structure according to the present invention

Figure 4 is a perspective view showing a conventional vehicle seat suspension structure

5 is a side view of FIG. 4

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

10 roller 11: upper frame

12: lower frame 13a, 13b: link bar

14: Linkage 15: Check-up Server

16: torsion bar 17: axis

18: bush 20: means of operation

21: slider 22: guide rail

23: drive motor 24: pinion gear

25: rack gear

Hereinafter, the features of the present invention for achieving the above object are as follows.

The seat suspension structure for an automobile according to the present invention has two link bars, one of which is slidable by a roller 10 and the other of which is fixed and supported on a seat cushion side upper frame 11 and a floor side lower frame 12, respectively. A pair of left and right linkages 14 capable of vertically moving as a whole by pin-bonding 13a and 13b in a cross structure;

A check-up server 15 connected horizontally between the two link bars 13a and 13b to accommodate displacement caused by the vertical movement of the linkage 14;

It is disposed across the width direction from the front lower end of the seat cushion, one side is connected to the lower end of the link bar (13a), (13b) to exert the torsional rigidity according to the vertical flow of the link bar (13a), (13b) The other side is torsion bar extending to the outside while passing through the lower frame 12 and at the same time bent upwards to exhibit another torsional rigidity due to the rotational displacement that is varied in the front and rear direction by the operating means ( 16) characterized in that consisting of.

In particular, the actuating means 20 includes a slider 21 formed to allow the torsion bar 16 to flow therethrough so as to slide in a forward and backward linear direction;

A guide rail 22 for guiding the slider 21 to smoothly and accurately perform front and rear linear motions;

It is characterized in that the pinion gear 24 and the rack gear 25 coupled to the rotating shaft of the drive motor 23 which is the driving force for varying the slider 21 in the front and rear linear direction.

In addition, the inner structure of the slider 21 through which the torsion bar 16 is movably penetrated has a central portion such that the torsion bar 16 can freely rotate in the inside to impart a linear motion to the slider 21. It is characterized by being formed in a narrow upper and lower through shape.

Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.

1 is a perspective view showing a seat suspension structure for a vehicle according to the present invention, Figure 2 is an operation view showing an operating state of the torsion bar of the seat suspension structure for a vehicle according to the present invention, Figure 3 is for an automobile according to the present invention It is sectional drawing which shows the internal structure of the slider of a seat suspension structure.

As shown in FIG. 1, two left and right upper frames 11 are installed side by side on the bottom of the seat cushion, and two left and right lower frames fixed on the floor on the same line below each upper frame 11 ( 12) is arranged.

The upper frame 11 and the lower frame 12 has the same structure, the cross section is in the form of a 'c'-shaped guide rail, it can serve as a guide for the sliding of the roller 10 to be described later.

In addition, a linkage 14 having a cross structure in which two link rods 13a and 13b are joined by pins in the middle of the length thereof is provided, and these linkages 14 are provided with two pairs to support both left and right sides of the seat cushion. It is supposed to be.

In particular, the rear end of each link bar 13a, 13b is equipped with a roller 10, the front end of each shaft 17 and the torsion bar 16 on the upper frame 11 and the lower frame 12 It is connected and supported on).

As such, the linkage 14 formed by combining the two link bars 13a and 13b is capable of vertical movement using the sliding of the roller 10, and is folded or unfolded through the vertical movement at this time. The buffer function can be performed.

Reference numeral 20 denotes a pop-up server.

The pull-up server 20 is installed in a structure that is connected between the two link rods (13a), (13b), and during the vertical movement of the linkage 14, the expansion and contraction of the linkage 14, the role of damping the vertical movement of the linkage 14 Will be

In addition, the pull-up server 20 is arranged horizontally parallel to the seat cushion at a position higher than the cross pin coupling point of the link bar (13a), (13b), the linkage 14 is folded as the seat cushion is lowered The ground is stretched together, and conversely, when the linkage 14 is unfolded, it is simultaneously reduced.

In addition, a torsion bar 16 capable of exerting an absorbing and restoring force against the road surface impact is employed.

The configuration described above is the same as that of a known technique.

On the other hand, the torsion bar 16 is arranged side by side in the width direction at the front lower end of the seat cushion, one side is connected to the lower end of the link bar (13a), (13b), the link bar (13a), (13b) The torsional rigidity (torsion force) is exerted according to the vertical flow of the upper side, and the other side is equipped with a bush 18 to prevent the flow of the torsion bar 16 on the lower frame 12, and extends outward It is curved upward.

At the tip of the torsion bar 16, which is bent upward, the torsion bar can be varied in the forward and backward directions to exert another torsional rigidity, and the operation means 20 actuated by the drive motor 23 The operating means 20 is equipped with a slider 21 formed so that the torsion bar 16 is movably penetrated to slide forward and backward in a straight line direction, and the slider 21 moves forward and backward in linear direction. Guide rails 22 are formed in the longitudinal direction of the seat cushion so as to smoothly and accurately perform the guide.

At this time, the drive motor 23 is applied to the driving force to change the slider 21 in the front and rear linear direction, the pinion gear 24 and the pinion gear 24 coupled to the rotation shaft of the drive motor 23 and The rack gear 25 to be engaged is provided so that the slider 21 can be guided in a straight forward and backward direction along the guide rail 22.

Drawings consistent with the above description are the same as in the accompanying drawings.

At this time, the inner structure of the slider 21 through which the torsion bar 16 is movably received, as shown in FIG. 3, the torsion bar 16 freely rotates in the interior thereof to the slider 21. The central portion has a narrow upper and lower through shape to impart a linear motion.

Next, the operation principle of the present invention having such a configuration will be described.

Drivers of less weight than the general public can vary the torsional stiffness of the torsion bar 16, which is set to be adjustable according to the general body condition (body weight) of the general public in order to proactively cope with the road impact generated during the driving of the vehicle. Adjust the torsional stiffness to be small, at this time, by adjusting the operating means 20 of the other side in the same direction as the torsional rigidity in accordance with the up and down flow of the link bar (13a), (13b) than the initial torsional rigidity By making it small, it is possible to easily absorb the road impact, and to adjust the torsional rigidity to increase the torsional stiffness of the driver of more weight than the general person, so as to exert the torsional rigidity according to the vertical flow of the link rods 13a and 13b. By adjusting the operation means 20 on the other side in the opposite direction to be greater than the initial torsional rigidity to easily absorb the road impact To be able.

Therefore, the torsion bar 16 can be rotated in the front-rear direction by the operation of the operating means 20 so that the torsional rigidity of the torsion bar 16 set to a predetermined value can correspond to the passenger's physical condition, that is, the weight. By varying the rotational displacement accordingly, the torsional rigidity can be varied as a whole.

As described above, the seat suspension structure for automobiles according to the present invention is different from the rotational displacement of the torsion bar of the conventional configuration by combining the shock-up server and the torsion bar and the linkage organically, more effectively to the road impact generated during driving. There is an advantage that can cope with and improve the convenience of the driver according to this, and can cope with a variety of physical conditions, there is an effect that can provide a more improved ride comfort than the prior art.

Claims (3)

One side is slidable by a roller 10 and the other cross structure two link rods 13a and 13b fixedly supported on the seat cushion side upper frame 11 and the floor side lower frame 12, respectively. Two pairs of left and right linkages 14 capable of vertically moving by pin coupling; A check-up server 15 connected horizontally between the two link bars 13a and 13b to accommodate displacement caused by the vertical movement of the linkage 14; It is disposed across the width direction from the front lower end of the seat cushion, one side is connected to the lower end of the link bar (13a), (13b) to exert the torsional rigidity according to the vertical flow of the link bar (13a), (13b) The other side is torsion bar extending to the outside while passing through the lower frame 12 and at the same time bent upwards to exhibit another torsional rigidity due to the rotational displacement that is varied in the front and rear direction by the operating means ( A seat suspension structure for an automobile, characterized in that consisting of 16). 2. The apparatus as claimed in claim 1, wherein the actuating means (20) comprises: a slider (21) formed to allow the torsion bar (16) to flow through and slide in a straight forward and backward direction; A guide rail 22 for guiding the slider 21 to smoothly and accurately perform front and rear linear motions; Automobile seat suspension structure, characterized in that composed of a pinion gear (24) and a rack gear (25) coupled to a rotating shaft of a drive motor (23) which is a driving force for varying the slider (21) in the front and rear linear directions. 3. The inner structure of the slider 21 in which the torsion bar 16 is movably penetrated is configured such that the torsion bar 16 can freely rotate within the inside to impart linear movement to the slider 21. The seat suspension structure for a vehicle, characterized in that the center portion is formed in a narrow upper and lower through shape so that.