JP3225840B2 - Seat cushion frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion panel and a rear reinforcing member which is fixed to a rear portion of a lower surface of the seat cushion panel so as to extend in a lateral direction of the seat and forms a closed cross section with the seat cushion panel. The vehicle is fixed to the vehicle floor via the rear reinforcing member, and transmits an input to a seat to the vehicle floor via the rear reinforcing member.
A front reinforcing member and a rear reinforcing member, which are fixed to the front and rear portions of the lower surface of the seat cushion panel so as to extend in the lateral direction of the seat and form a closed cross section with the seat cushion panel; A pair of seat tracks fixed to both ends of the rear reinforcing member and connecting the front reinforcing member and the rear reinforcing member to each other. Input to a seat is performed through the front and rear reinforcing members and the pair of seat tracks. The present invention relates to a seat cushion frame in which a pair of seat tracks also serve as reinforcing members in the front-rear direction of a seat cushion panel while transmitting the vehicle to a vehicle floor.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional seat cushion frame is provided with a plurality of springs S provided with clamps, and a substantially square-shaped main frame F disposed below a seat cushion. And the main frame F
And a center reinforcement C extending in the front-rear direction at the center of the seat cushion frame F, and a reclining device fixed to left and right rear ends of the main frame F. It comprises a mounting bracket R, a seat belt anchor mounting bracket B fixed to both ends of a rear portion of the main frame F, and a pair of seat tracks T fixed to left and right front and rear portions of the seat cushion frame F. there were.

[0003]

In the above-mentioned conventional seat cushion frame, the force entering the seat back is fixed to the left and right side rear ends of the main frame F from the seat back frame and a reclining device (not shown). Transmitted from the left and right sides of the main frame F to the vehicle floor via the seat tracks T from the front and rear portions of the main frame F. There are also a large number of components that are involved in the transmission of force, and there is a problem in that it is necessary to take measures against the strength of the many components and also to take measures against the strength of the joint.

Further, the above-mentioned conventional seat cushion frame requires a large number of components as described above, and it is necessary to take measures against the strength of the large number of components related to the force transmission path.
There is also a problem that the cost is increased because a measure for the strength of the joint is required.

Accordingly, the present inventors have proposed a rear reinforcing member for extending a seat cushion to a seat cushion panel and a rear portion of a lower surface of the seat cushion panel in a lateral direction of the seat and forming a closed cross section with the seat cushion panel. And fixing to the vehicle floor via the rear reinforcing member, and focusing on the first technical idea of the present invention of transmitting input to a seat to the vehicle floor via the rear reinforcing member, A front reinforcing member and a rear reinforcing member which are fixed to the seat cushion panel and the front and rear portions of the lower surface of the seat cushion panel so as to extend in the lateral direction of the seat and form a closed cross section with the seat cushion panel; A pair of seat truss fixed to both ends of the rear reinforcing member and the rear reinforcing member and connecting the front reinforcing member and the rear reinforcing member. A pair of seat tracks connecting the front reinforcing member and the rear reinforcing member to the vehicle floor through the rear reinforcing member and the pair of seat tracks, and transmitting the input to the seat to the vehicle floor. Focusing on the second technical concept of the present invention, which also serves as a reinforcing member in the front-rear direction of the cushion panel, and further researching and developing the rear portion, the input of the seat forms a closed cross section with the seat cushion panel. The present invention has achieved the object of simplifying the transmission path of the force so as to transmit the force to the vehicle floor via the reinforcing member, increasing the reliability in strength, and reducing the number of parts and reducing the cost. is there.

[0006]

A seat cushion frame according to the present invention (a first invention according to claim 1) includes a seat cushion panel provided at a lower portion of a seat cushion, and a rear portion at a lower surface of the seat cushion panel. extend transversely of the sheet cross section along the sheet longitudinally to open upward
It has a substantially U-shape, and a flange is formed around it.
The seat cushion panel is fixed to the seat cushion panel by a flange portion, and along the seat cushion panel in the longitudinal direction of the seat.
The rear reinforcing member has a cross section that forms a closed cross section, and is fixed to the vehicle floor via the rear reinforcing member.

[0007] A seat cushion frame according to the present invention (a second invention according to claim 2) has a seat cushion panel provided at a lower portion of a seat cushion, and a front and rear portion of a lower surface of the seat cushion panel in a lateral direction of the seat. extending death,
The cross section along the vertical direction of the plate is a substantially U-shaped shape that opens upward,
A flange is formed around the periphery,
A front reinforcing member and a rear reinforcing member which are fixed to the seat cushion panel and whose cross section along the longitudinal direction of the seat forms a closed cross- section with the seat cushion panel; and lower surfaces at left and right ends of the front reinforcing member and the rear reinforcing member. And a pair of seat tracks connecting the front reinforcing member and the rear reinforcing member to each other.

According to a third aspect of the present invention, in the seat cushion frame according to the first or second aspect, the rear reinforcing member is disposed at a rear end of the seat cushion panel. In addition, a fixing portion to which the reclining device is fixed is provided.

According to a fourth aspect of the present invention, in the seat cushion frame according to any one of the first to third aspects, the rear reinforcing member includes a fixing portion to which a seat belt anchor is fixed. Is what it is.

[0010] (action) seat cushion frame of the first invention having the above construction, extend transversely of the sheet to the lower surface rear portion of the seat cushion panel that is disposed on the lower portion of the seat cushion,
A substantially U-shaped cross section along the seat longitudinal direction that opens upward
In this way, a flange portion is formed around the
The seat cushion panel is fixed to the vehicle floor via the rear reinforcing member having a cross section along the longitudinal direction of the seat that forms a closed cross section with the seat cushion panel. This is transmitted to the vehicle floor via the reinforcing member.

[0011] the seat cushion frame of the second invention having the above construction, extend laterally of the sheet on the bottom surface front and rear of the seat cushion panel that is disposed on the lower portion of the seat cushion, a cross section along the seat longitudinal direction Open upward
It has a substantially U-shape, and a flange is formed around it.
The seat cushion panel is fixed to the seat cushion panel by a flange portion, and along the seat cushion panel in the longitudinal direction of the seat.
The vehicle is fixed to the lower surfaces of the left and right ends of the front reinforcing member and the rear reinforcing member having a closed cross section, and is slidable via the pair of seat tracks connecting the front reinforcing member and the rear reinforcing member. Since the seat is locked to the floor, the input to the seat is transmitted to the vehicle floor via the front and rear reinforcing members and the pair of seat tracks, and the pair of seat tracks is reinforced in the front-rear direction of the seat cushion panel. It also serves as a member.

[0012] In the seat cushion frame of the third invention having the above structure, in the first invention or the second invention, the rear reinforcing member provided at a rear end of the seat cushion panel is fixed to the reclining device. Since the fixing portion is provided, the force acting on the seat back is transmitted from the reclining device and the fixing portion to which the reclining device is fixed to the vehicle floor via the rear reinforcing member.

[0013] In the seat cushion frame according to the fourth aspect of the present invention, the rear reinforcing member includes the fixing portion to which the seat belt anchor is fixed. The force is transmitted from the seat belt anchor and the fixing portion to which the seat belt anchor is fixed to the vehicle floor via the rear reinforcing member.

[0014]

The seat cushion frame according to the first aspect of the present invention having the above-mentioned effects is fixed to the vehicle floor via the rear reinforcing member forming a closed cross section with the seat cushion panel. Since the force is transmitted to the vehicle floor via the rear reinforcing member, the force transmission path is simplified, the reliability of the strength is increased, and the number of parts is reduced to reduce the cost.

The seat cushion frame according to the second aspect of the present invention having the above-mentioned action is fixed to the lower surfaces of the left and right ends of the front reinforcing member and the rear reinforcing member forming a closed cross section with the seat cushion panel. The front and rear reinforcing members and the pair of seat tracks are slidably locked to the vehicle floor via the pair of seat tracks connecting the front reinforcing member and the rear reinforcing member, and input to a seat is performed by the front and rear reinforcing members and the pair of seat tracks. Transmitted to the vehicle floor via the power transmission path, thereby simplifying the transmission path of the force and improving the reliability in terms of strength, and using a pair of seat tracks connecting the front reinforcing member and the rear reinforcing member in the longitudinal direction of the seat cushion panel. This also has the effect of increasing the strength because it also serves as a reinforcing member, and reducing the number of parts to reduce costs.

In the seat cushion frame according to the third aspect of the present invention, the force acting on the seat back is applied to the vehicle floor from the reclining device and the fixing portion to which the reclining device is fixed via the rear reinforcing member. Since the transmission is performed, the transmission path of the force acting on the seat back is simplified, the reliability in strength is increased, and the number of parts is reduced to reduce the cost.

In the seat cushion frame according to the fourth aspect of the present invention, the force acting on the seat belt is applied to the vehicle from the seat belt anchor and the fixing portion to which the seat belt anchor is fixed via the rear reinforcing member. Since the force is transmitted to the floor, the transmission path of the force applied to the seat belt is simplified, thereby improving the strength reliability and reducing the number of parts to reduce the cost.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are described below.
This will be described with reference to the drawings.

(First Embodiment) A seat cushion frame according to a first embodiment includes a seat cushion panel 1 disposed below a seat cushion 100 as shown in FIGS. A front reinforcing member 21 and a rear reinforcing member 22 which are fixed to front and rear portions of the lower surface of the seat 1 so as to extend in a lateral direction of the seat and form a closed cross section with the seat cushion panel 1; And a pair of seat tracks 31 and 32 fixed to both ends of the rear reinforcing member 22 and connecting the front reinforcing member and the rear reinforcing member, and are slidable through the pair of seat tracks 31 and 32. The front and rear reinforcing members 21, 22 and the pair of seat tracks 31,
32, and can be transmitted to the vehicle floor 101 via the control unit 32.

As shown in FIG. 1, the seat cushion panel 1 is composed of an iron thin plate member 10 having a substantially rectangular three-dimensional U-shaped cross section and extending substantially forward in a lateral direction. A front bulging portion 11 is formed, and a substantially V-shaped rear bulging portion 12 extending in the lateral direction is formed at the rear end.

The front reinforcing member 21 is shown in FIGS.
As shown in the figure, the seat cushion panel 1 is formed by a substantially strip-shaped three-dimensional member 210 having a U-shaped cross section, and a welding flange portion 211 is formed therearound.
Is spot-welded to the lower surface of the front bulging portion 11 by the flange portion 211.

The rear reinforcing member 22 is shown in FIGS.
As shown in the figure, the front reinforcing member 21 is formed of a substantially strip-shaped three-dimensional member 220 having a U-shaped cross section as a strength member having a greater thickness than the front reinforcing member 21, and a flange portion 221 for welding is provided therearound. Is formed, and the lower surface of the rear end bulging portion 12 of the seat cushion panel 1 is spot-welded by the flange portion 221.

As shown in FIG. 1 and FIG. 3, the front reinforcing member 21 and the rear reinforcing member 22 have a pair of seat tracks 31, 32 on both ends inside a downwardly projecting surface.
A plurality of nuts 212 and 222 are fixedly bonded to each other.

The pair of seat tracks 31 and 32
The nut 21 as shown in FIGS.
2 and 222, the front end 31 is fastened.
1, 321 and the upper portions of the rear ends 312, 322 are fixed to both ends of the front reinforcing member 21 and the rear reinforcing member 22, and the lower ends 313, 323, 314, 3
24 is fixed to the floor of the vehicle by bolts.

The rear reinforcing member 22 is shown in FIGS.
As shown in FIG. 3, the seat cushion panel 1 includes fixing portions 43 and 44 which are disposed at both ends of the rear end and to which reclining devices 41 and 42 for adjusting the angle of the seat back 4 are fixed.

The rear reinforcing member 22 is shown in FIGS.
As shown in (1), a fixing portion 51 is provided to which the seat belt anchor 5 to which the seat belt is locked is fixed.

The seat cushion frame of the first embodiment having the above structure is fixed to the front and rear portions of the lower surface of the seat cushion panel 1 disposed below the seat cushion 100 so as to extend in the lateral direction of the seat. The pair of seat tracks fixed to both ends of the front reinforcing member 21 and the rear reinforcing member 22 forming a closed cross section with the seat cushion panel 1 and connecting the front reinforcing member 21 and the rear reinforcing member 22. The vehicle floor 101 is slidably engaged with the vehicle floor 101 via the base members 31 and 32, and the input to the seat is performed via the front and rear reinforcing members 21 and 22 and the pair of seat tracks 31 and 32. It is transmitted to 101.

The rear reinforcing member 22 is fixed to the fixing portion 43 to which the reclining devices 41 and 42 are fixed.
44, the force acting on the seat back 4 is applied to the rear reinforcing member 22 and the pair of seat tracks 31 from the reclining devices 41 and 42 and the fixing portions 43 and 44 to which the reclining devices are fixed. , 32 to the vehicle floor 101.

Further, since the rear reinforcing member 22 includes the fixing portion 51 to which the seat belt anchor 5 to which the seat belt is locked is fixed, the force applied to the seat belt is reduced. The anchor 5 and the fixing portion 51 to which the seat belt anchor 5 is fixed
Is transmitted to the vehicle floor 101 via the rear reinforcing member 22 and the pair of seat tracks 31, 32.

The seat cushion frame of the first embodiment having the above-described operation is fixed to the vehicle floor 101 via the rear reinforcing member 22 forming a closed cross section with the seat cushion panel 1, so that the seat cushion frame can be mounted on the vehicle. Since the input is transmitted to the vehicle floor 101 via the rear reinforcing member 22 as a strength member, the force transmission path is simplified, the strength reliability is increased, and the number of parts is smaller than that of the conventional art. This has the effect of reducing costs by lowering costs.

In the seat cushion frame of the first embodiment, the front and rear reinforcing members 21 and 22 having a substantially U-shaped cross section are spot-welded to the bulging portions 11 and 12 of the seat cushion panel 1. Since the box cross section is formed as a closed cross section, a thick pipe as an independent part is unnecessary as in the conventional case, and the number of parts and the number of assembling steps are reduced as compared with the conventional case. .

Further, the seat cushion frame of the first embodiment is fixed to both ends of a front reinforcing member 21 and a rear reinforcing member 22 forming a closed cross section with the seat cushion panel 1, and the front reinforcing member 21 and the rear portion are fixed. Reinforcing member 22
Is slidably locked to the vehicle floor 101 via the pair of seat tracks 31 and 32 connecting the front and rear reinforcing members 21 and 22 and the pair of seat tracks 31, 32, the force is transmitted to the vehicle floor 101 via the base member 32, so that the force transmission path is simplified to enhance the reliability in strength, and a pair of seat tracks 3 for connecting the front reinforcing member 21 and the rear reinforcing member 22 are provided.
Since the seat cushion panel 1 also serves as a reinforcing member in the front-rear direction, the seat frame 1 has the effect of increasing the strength of the seat frame 1 in the front-rear direction and increasing the reliability of the strength.

In the seat cushion frame of the first embodiment, the force acting on the seat back 4 is transmitted from the reclining devices 41 and 42 and the fixing portions 43 and 44 to which the reclining devices are fixed to the rear reinforcing member 22. And transmitted to the vehicle floor 101 via the pair of seat tracks 31 and 32, so that the transmission path of the force acting on the seat back 4 is simplified, the strength reliability is increased, and the number of parts is reduced. This has the effect of reducing costs.

Further, in the seat cushion frame of the first embodiment, the force applied to the seat belt is changed from the seat belt anchor 5 and the fixing portion 51 to which the seat belt anchor 5 is fixed to the rear reinforcing member 22 and the rear reinforcing member 22. Since the power is transmitted to the vehicle floor 101 via the pair of seat tracks 31 and 32, the transmission path of the force acting on the seat belt is simplified, the reliability in strength is improved, and the number of parts is reduced to reduce the cost. This has the effect of lowering.

Since the seat cushion frame of the first embodiment is locked to the vehicle floor 101 via the pair of seat tracks 31, 32, it is possible to position the seat 100 at a predetermined position. This has the effect of realizing a reinforcing function for increasing the strength of the seat frame 1 in the front-rear direction.

The above-described embodiments are exemplarily described for explanation, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without departing from the technical idea of the present invention.

In the first embodiment, as an example, the front reinforcing member 21 is used to realize sliding of the seat.
And a pair of seat tracks 31,
Although an example in which the present invention is locked to the vehicle floor 101 via the base plate 32 has been described, the present invention is not limited thereto, and the present invention is applied to a fixed seat such as a rear seat of a passenger car. Reinforcing member 21 and rear reinforcing member 2
2 can be fixed to the vehicle floor 101 via a bracket.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing each element of a seat cushion frame according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the seat cushion frame according to the first embodiment, taken along line AA of FIG. 1;

FIG. 3 is a cross-sectional view of the first embodiment taken along line BB of FIG. 1;

FIG. 4 is a perspective view showing a conventional seat cushion frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat cushion panel 21 Front reinforcement member 22 Rear reinforcement member 31, 32 Seat truck 100 Seat cushion 101 Vehicle floor

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60N 2/06 A47C 7/02

Claims (4)

(57) [Claims] And 1. A seat cushion panel that is disposed on the lower portion of the seat cushion, substantially to extend in the lateral direction of the sheet on the bottom surface rear portion of the seat cushion panel, a cross section along the sheet longitudinally upwardly open
It has a U-shape and a flange portion is formed around it.
And a rear reinforcing member that forms a closed cross section along the longitudinal direction of the seat with the seat cushion panel, and is fixed to the vehicle floor via the rear reinforcing member. A seat cushion frame characterized by being made. 2. A seat cushion panel that is disposed on the lower portion of the seat cushion, and extending transversely of the sheet on the bottom surface front and rear portion of the seat cushion panel, a cross section along the sheet longitudinally upwardly open
It is approximately U-shaped and has a flange formed around it.
Affixed to the seat cushion panel by the
Cross section along the longitudinal direction of the seat with the seat cushion panel
A pair of sheet but which connects the front reinforcing member and the rear reinforcing member to form a closed cross section, fixed to the lower surface of the left and right ends of the said front reinforcement member and the rear reinforcing member, and a front portion reinforcing member and the rear reinforcing member A seat cushion frame comprising a truck. 3. The seat according to claim 1, wherein the rear reinforcing member is provided at a rear end of the seat cushion panel and includes a fixing portion to which a reclining device is fixed. Cushion frame. 4. The seat cushion frame according to claim 1, wherein the rear reinforcing member includes a fixing portion to which a seat belt anchor is fixed.