KR102119171B1 - Car seat with active anti-submarine function - Google Patents

Abstract

The present invention relates to a vehicle seat having an anti-submarine function, the coupling member is coupled to the cushion frame of the seat frame, and the seat cushion for the occupant to be seated in the cushion frame when the vehicle hits the front of the vehicle, the cushion frame Includes a panel in which the bottom surface is rotatably coupled, and a link hinge hingedly coupling the bottom surface of the panel to the coupling member, and when the vehicle collides in front of the vehicle, the panel rotates the link hinge to the hinge so that the panel lifts the occupant's thigh It is characterized by. Therefore, the panel is configured to lift the thigh of the occupant by the inertial force applied to the driver in the event of a collision of the vehicle, so that a separate power-requiring device is not required, thereby reducing installation cost and simplifying the structure. .

Description

Car seat with anti-submarine function{CAR SEAT WITH ACTIVE ANTI-SUBMARINE FUNCTION}

The present invention relates to a vehicle seat, and more particularly, to a vehicle seat having an anti-submarine function capable of promoting occupant protection during a frontal collision of a vehicle.

In general, the seat of the vehicle includes a seat back that supports the load of the occupant and is installed so as to be slidably installed back and forth on the floor surface of the room, and pivotally installed on the seat cushion to support the back of the boarding area.

This seat includes a device that locks the seat rails for movably joining the seat to the floor of the vehicle to adjust the position of the seat by pulling or pushing the seat back and forth to fit the body shape of the driver or passenger. A recliner for adjusting the angle of the seatback is provided.

In such a vehicle seat, the lower body of the passenger sinks downward as the submarine is submerged and moves forward in the event of a frontal collision. This is called a submarine phenomenon in vehicles. Due to this submarine phenomenon, the passenger is injured because the lower body is not restrained.

In order to prevent the submarine phenomenon of the vehicle, various devices having an anti-submarine function for raising a lower body of a passenger in a front collision of a vehicle have been proposed. Among these devices, a device using an air bag to raise the front end of a sheet in the event of an impact is disclosed in Japanese Patent Application Laid-Open No. Hei 4-33500 (Patent Document 1), and a device for mechanically lifting a sheet tip is disclosed in Japanese Patent Laid-Open 2-405988 (Patent Document 2).

However, the device having the conventional anti-submarine function as described above has a problem in that a relatively large force is added, and since it is necessary to structurally strengthen the entire sheet, the entire sheet is enlarged and weighted, making it impossible to lighten the recent trend.

An anti-submarine device has been proposed for solving this problem, and is disclosed in Japanese Patent Laid-Open No. 2000-272396 (Patent Document 3).

In the anti-submarine device disclosed in Patent Document 3, a pair of arms are rotatably supported around the support portion at the front portion of the seat frame, and pipes are connected to the arms in the left and right directions of the vehicle. The panel is supported by pipes and arms.

A casing portion is formed at an intermediate portion of the seat frame, and a gas generating device is housed in the casing portion. Therefore, the gas generating device is configured such that the piston installed therein protrudes in the left direction during operation. A pin is installed at the end of the piston, and the pin is inserted into the guide hole of the seat frame and is installed in the arm through a long hole formed in the arm.

In the anti-submarine device, when an impact due to a collision is detected while driving, the gas generating device is operated, and at this time, the piston protrudes and the pin moves along the guide hole, and at the same time, the arm, pipe, and panel are rotated around the support. At this time, the panel protrudes upward from the lower portion of the seat cushion to expand the seat and support the occupant's buttocks, thereby restraining the occupant from moving forward.

However, the conventional anti-submarine device as described above cannot be used repeatedly because the gas generating device has a disposable structure, and when the gas generating device operates even in a slight collision, repair and replacement of parts are required to return the sheet to its original state. There was a problem in that it had to be carried out, which was very cumbersome and incurred additional costs.

Japanese Patent Application Publication No. Hei 4-33500 Japanese Patent Application Laid-Open No. 2-405988 Japanese Patent Application Publication No. 2000-272396 (2000.10.03)

Therefore, the present invention was devised to solve the above problems, and the vehicle is configured to lift the front portion of the seat with a force to move forward when the vehicle crashes, so that no separate power is required, so the structure is simple and cost-effective. An object of the present invention is to provide a seat for a vehicle having an anti-submarine function that can be saved.

The present invention for achieving the above object, the coupling member is coupled to the cushion frame of the seat frame in the transverse direction, the seat cushion for the vehicle seated by the occupant seated on the cushion frame, the front side of the cushion frame In the part, the panel is rotated so that the base is rotatably connected, the link hinge that hinges the base of the center of the panel to the coupling member, and connects both ends of the front side of the panel to the cushion frame to be tensioned by a certain amount of impact applied when the vehicle crashes. The elastic body generating elastic force, installed in the transverse direction with respect to the front part of the cushion frame, supports the bottom part of the front end of the panel, and is installed on the support part to reduce noise and vibration caused by contact between the cushion frame and the panel It includes at least one damping member, and a stopper to be provided between the side of the panel and the side of the cushion frame to prevent the front part of the panel from being lifted above a certain height when the panel is rotated, and the elastic body has one end of the cushion frame. Is connected to the lower end of the connecting bracket is fixed to the upper end with respect to the bottom surface, the other end is configured to be connected to the connecting projection formed on the bottom of the front end of the panel, the stopper is a fitting projection formed to protrude horizontally from the side of the cushion frame , And a stopper bracket having a guide hole that is formed to protrude from the side of the panel to the bottom but is fitted and guided, and when the vehicle collides in front of the vehicle, the front end of the panel rotates upwards around the link hinge to occupants Characterized in that it is configured to lift the thigh of the.

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According to the present invention, the panel supporting the hip and thigh of the occupant is provided on the cushion frame so as to be rotatable by the link hinge, so that the occupant's buttocks are lowered by the phenomenon that the lower body sinks downward while the occupant moves forward when the vehicle crashes forward. By pressing the rear portion of the panel, the front portion of the panel lifts the thigh portion of the occupant, thereby preventing an injury to the lower part of the occupant.

In addition, since the panel is configured to lift the thigh of the occupant by the inertia force applied to the driver in the event of a vehicle collision, there is no need for a device requiring a separate power as in the prior art, thus reducing installation cost and simplifying the structure. .

1 is a perspective view showing a sheet having an anti-submarine function according to an embodiment of the present invention.
Figure 2 is a perspective view showing a state in which the panel is disassembled in Figure 1;
Figure 3 is a cross-sectional view showing a combined state of the panel and the cushion frame in Figure 1;
Figure 4 is a perspective view showing a state in which the seat cushion is coupled to the panel in Figure 1;
5 is a view showing a state before and after the anti-submarine function of the sheet of FIG. 1 is activated.
6 is a perspective view showing a state in which the incision of the seat cushion is lifted after the anti-submarine function is activated in the seat of FIG. 4.

A specific embodiment for carrying out the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, definitions of these terms should be made based on the contents throughout this specification.

For reference, FIG. 1 is a perspective view showing a sheet having an anti-submarine function according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state in which the panel is disassembled in FIG. 1, and FIG. 3 is a panel in FIG. 1 And a cushion frame. Figure 4 is a perspective view showing a state in which the seat cushion is coupled to the panel in Figure 1, Figure 5 is a view showing the state before and after the operation of the anti-submarine function of the seat of Figure 1, Figure 6 is the seat of Figure 4 It is a perspective view showing a state in which the incision of the seat cushion is lifted after the anti-submarine function is activated.

As shown, the anti-submarine device 100 of the vehicle seat according to an embodiment of the present invention is provided with a cushion frame 110 to which the seat cushion 60 is coupled to the top of the seat rail 50 of the vehicle, As a device for preventing the occupant from being injured by raising the front portion of the seat cushion 60 when the occupant moves forward in the event of a front collision of the vehicle, the panel 120, the link hinge 130, the elastic body 140, the stopper ( 150).

First, a cushion frame 110 to which a seat cushion is coupled is installed on an upper portion of the seat frame. At the front lower side of the cushion frame 110, a rod-shaped coupling member 111 for coupling and supporting the panel 120 described later in both directions of the vehicle is provided. In addition, the front portion of the cushion frame 110 is formed to have a predetermined width and width to support the front of the panel 120, which will be described later, is provided to be coupled in the transverse direction with respect to the cushion frame 110.

The panel 120 is hinged to the coupling member 111 by the link hinge 130 to be described later in the front side portion of the cushion frame 110 and rotated around the link hinge 130 when the vehicle collides in front of the vehicle. That is, the panel is fixed to the link hinge 130, the bottom surface is fixed to the link hinge 130, the link hinge 130 is rotatably coupled to the coupling member 111.

The link hinge 130 is formed into a ring shape in a ring shape so that it can be rotated by being fitted into a rod-shaped coupling member, and is formed by opening on one side. That is, the link hinge is configured to open one side of the opening and is configured to fit into the coupling member through one side of the opening. In addition, a fixed protrusion 131 fixed to the bottom surface of the panel 120 as a fastening member is formed horizontally at both ends of the link hinge 130 to protrude. The top surface of the fixing protrusion 131 is formed in a flat surface so as to be completely in close contact with the bottom surface of the panel 120. A fastening groove having a thread for fastening the fastening member is formed on the upper surface of the fixing protrusion 131. This fastening groove may be configured so that a thread is not formed when the screw is fastened.

That is, after the link hinge 130 is fitted and coupled to the coupling member 111, the bottom surface of the panel 120 is in close contact with the top of the fixing protrusion 131 of the link hinge 130, and then fastened from the top of the panel 120 After the member passes through the panel 120, it is fastened to the fastening groove of the fixed protrusion 131.

The elastic body 140 is provided to connect both ends of the front side of the panel 120 to the cushion frame 110 between the cushion frame 110 and the front of the panel 120 so that the panel 120 is accelerated or decelerated when driving the vehicle. Rotating in the state coupled to the link hinge 130 serves to prevent flow. That is, the elastic body 140 is configured to generate an elastic force when tensioned in a normal state, and is tensioned by a predetermined amount of impact applied when a vehicle collides, thereby generating elastic force. The elastic body 140 is configured such that one end is connected to a connection bracket 141 fixed to the front bottom surface of the cushion frame 110, and the other end is connected to a connection protrusion 121 formed on the front bottom surface of the panel 120. .

The elastic body 140 is composed of a coil spring, and at the upper and lower ends, a hook portion is formed to be connected to the hooking portion of the connecting bracket 141 and the connecting protrusion 121 formed on the bottom of the panel 120, respectively.

Here, the connecting bracket 141 is fixed to the bottom of the cushion frame 110 by a welding or fastening member, the bottom is composed of a free end. At the lower end of the connecting bracket 141, a hook portion to which the other end of the elastic body 140 is detachably hooked is formed to protrude.

Between the panel 120 and the cushion frame 110, when the vehicle 120 collides with the front of the vehicle, the panel 120 rotates around the link hinge 130, and when the front of the panel 120 rises, the front portion of the panel 120 A stopper 150 is provided to prevent rotation over a certain angle.

The stopper 150 is formed to protrude in the horizontal direction from the side of the cushion frame 110, the protruding portion 151, the front side of the panel 120 is formed to protrude downward from one side or both sides, but the fitting protrusion 151 is fitted And a stopper bracket 152 on which a guide hole 152a to be guided is formed.

The fitting protrusions 151 are formed to protrude in opposite directions from both sides of the cushion frame 110, but are formed at both sides or one side. At the end of the fitting protrusion 151, when the front portion of the panel 120 is raised while the fitting protrusion 151 is fitted in the guide hole of the stopper bracket 152, in the guide hole 152a of the stopper bracket 152 The escape protrusion for preventing the fitting protrusion 151 from being detached is provided. Here, the fitting protrusion 151 is fixed to the cushion frame 110 in the form of a bolt, and a screw thread is formed at the end to be configured to be coupled to the nut-shaped escape preventing protrusion.

The stopper bracket 152 is formed with a circular plate member protruding vertically from both sides of the panel 120 toward the lower side, but is preferably formed integrally with the panel 120, but after forming into a separate bracket, the panel It may be configured to be fixed by welding or fastening members on both sides of the (120). Here, the guide hole 152a is also formed in a circular arc shape such as the stopper bracket 152.

On the other hand, the vehicle seat having an anti-submarine function according to an embodiment of the present invention is provided between the cushion frame 110 and the panel 120 to reduce the noise or vibration generated when the panel 120 hits the cushion frame 110. It further includes a damping member 160 for reducing.

The damping member 160 is an elastic body made of a rubber material, and is coupled to the upper surface of the support part 112 of the cushion frame 110 or is coupled to the bottom surface of the panel 120. The damping member 160 in one embodiment of the present invention is coupled to the upper surface of the support 112 of the cushion frame 110.

The damping member 160 is configured such that a flat plane is formed at the upper end so that the bottom surface of the panel 120 is in close contact. In addition, the damping member 160 is configured such that the fitting protrusion 151 is projected toward the lower side to fit into the fitting hole formed on the upper surface of the support 112 of the cushion frame 110.

In addition, the damping member 160 may be configured by flattening the top and bottom surfaces to have a predetermined thickness, and then attaching them to the top of the support 112 of the cushion frame 110 or the bottom of the panel 120.

On the other hand, the seat cushion 60, which is coupled to the upper portion of the cushion frame 110, is occupied by the occupant, the front panel 120 is rotated around the coupling member 111 when the vehicle crashes in front of the vehicle. When the portion is raised, the incision portion 61 is provided to facilitate the rise of the seat cushion 60 coupled to the top of the panel 120.

This incision 61 is approximately the same as the shape of the panel 120 so that only a portion of the seat cushion 60 corresponding to the panel 120 can be quickly lifted when the front portion of the panel 120 is raised. It is formed in a "c" shape.

Here, only the portion corresponding to the panel 120 in the seat cushion 60 may be configured by manufacturing a separate member, that is, a cushion pad and attaching it to the panel 120. That is, after forming a through hole in a portion corresponding to the panel 120 during molding of the seat cushion 60, the cushion pad attached to the panel 120 is fitted with the through hole so that the cushion pad is a part of the seat cushion 60. To form.

An operation description for a vehicle seat having an anti-submarine function according to an embodiment of the present invention having the above configuration will be described.

First, when the vehicle is stopped or running, the panel 120 has a flat top surface. That is, the hip of the occupant seated on the seat is in a flat and comfortable state as shown in FIG. 5.

Subsequently, when a front collision of the vehicle occurs, the vehicle's center of gravity moves forward as the vehicle's load is pushed forward due to the sudden stop of the vehicle. At this time, due to the submarine phenomenon, the rear portion of the panel 120 on which the hip portion of the occupant's center of gravity is raised is pressed down by the occupant's hip, and the front portion of the panel 120 rises.

That is, since the center of gravity of the occupant is located at the rear portion of the panel 120 based on the link hinge 130, the hip portion of the driver is caused by the submarine phenomenon that the driver is leaning forward and descends when the vehicle collides in front of the panel ( 120). Then, the panel 120 is rotated about the link hinge 130, the rear of the panel 120 is lowered by rotation, and the front is raised, thereby pushing up the driver's thigh.

At this time, the cushion pad portion provided in the panel 120 by being cut in the seat cushion 60 is protruded by the cut portion 61.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and those skilled in the art to which the art pertains have various modifications and other equivalent embodiments You will understand that it is possible. Therefore, the true technical protection scope of the present invention should be defined by the claims below.

50: seat rail
60: seat cushion 61; Incision
110: cushion frame 111: coupling member
112: support
120: panel 121: connecting projection
130: link hinge 131: fixed projection
140: elastic body 141: connecting bracket
150: stopper 151: fitting projection
152: stopper bracket
152a: Guide hole
160: damping member

Claims (5)

In the seat for a vehicle in which the coupling member is transversely coupled to the cushion frame of the seat frame, and the seat cushion in which the occupant is seated is seated on the cushion frame,
A panel in which a bottom surface is rotatably coupled at a front portion of the cushion frame;
A link hinge that hinges the bottom surface of the center of the panel to the coupling member;
An elastic body that connects both ends of the front side of the panel to the cushion frame and is stretched by a predetermined amount of impact applied when the vehicle crashes, thereby generating elastic force;
A support portion installed transversely to the front portion of the cushion frame to support the bottom portion of the front end of the panel;
At least one damping member is installed on the support to reduce the noise and vibration generated by the contact between the cushion frame and the panel; And
It is provided between the side of the panel and the side of the cushion frame and includes a stopper for preventing the front portion of the panel from being lifted above a certain height when the panel is rotated,
The elastic body is configured such that one end is connected to the lower end of the connecting bracket with the upper end fixed to the bottom surface of the cushion frame, and the other end is connected to the connecting projection formed at the bottom of the front end of the panel,
The stopper comprises a stopper bracket having a guide hole that is formed to protrude horizontally from the side of the cushion frame, and a guide hole that is formed to protrude downward from the side of the panel, but is fitted and guided.
The vehicle seat having an anti-submarine function, characterized in that the panel is configured to lift the thigh portion of the occupant by rotating the front end portion upward in the direction of the link hinge when the vehicle collides in the front.
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