JP2001010378A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve seat performance at the time of vehicle traveling, in a seat for a vehicle height-adjustable for a seating part. SOLUTION: A seat 10 for a vehicle is provided with a seating part carrying body 14 for carrying a seating part 12. The carrying body 14 is supported onto a body side attaching member 28 via a front side supporting device 24 connected oscillatably to a front part of the body 14 and a rear part supporting device 26 connected oscillatably to a rear part of the body 14. A height or an inclination of the carrying body 14 is adjustable in at least the supporting device 26 out of the supporting devices 24, 26, and the body 14 is supported elastically to body side attaching member 28 in a connecting portion thereof via the adjustable supporting device 26. A connecting part 23 of the supporting device 26 is attached to the seating part carrying body 14 in a condition guided to be only vertical-directionally moved, and is supported onto the body 14 via at least one elastic member 48.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly, to a seat for a vehicle, comprising a seat support for supporting a seat, as described in the preamble of claim 1. Supported on a vehicle body-side mounting member via a front support device swingably connected to a front portion of the seat support and a rear support device swingably connected to a rear portion of the seat support. Wherein at least one of the front and rear support devices is connected to the height of the seat support, and / or
Or, as an adjustable support device to allow the tilt to be adjustable, the seating carrier, at its connection point, via the at least one adjustable support device,
The present invention relates to a vehicle seat elastically supported by a vehicle body-side mounting member.

[0002]

2. Description of the Related Art German Offenlegungsschrift DE 44 03 506
The vehicle seat disclosed by A1 includes a seating portion carrier for supporting a seating portion. The seating portion carrier is provided on both left and right sides of a front portion and left and right sides of a rear portion, respectively. It is supported by a seat position adjusting rail mounted on the vehicle body via a swing link that is swingably connected. These four swing links are connected to the seat position adjustment rail connection
It is pivotally connected, thereby allowing the height of the seat carrier to be adjusted. In addition, a torsion spring is provided at the connecting portion to elastically support the seating portion carrier.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to improve the performance of a vehicle seat of the type described at the outset when the vehicle is running.

[0004]

This object is achieved according to the invention by a vehicle seat having the features specified in the characterizing part of claim 1.

That is, in the vehicle seat according to the present invention, the connecting portion (lagerung) of the adjustable support device is attached to the seat portion support so as to be movably guided only in the vertical direction. At the same time, it is supported by the seat supporting member via at least one elastic member. As a result, the locus of movement of the seat due to the elastic support becomes substantially linear, so that the elastic support and the vibration damping of the vehicle seat become very comfortable for the occupant sitting on the seat. In other words, if the movement trajectory of the seat due to the elastic support is a trajectory that rotates, or if the movement trajectory includes both the vertical movement component and the longitudinal movement component of the vehicle body, an unpleasant “oscillating feeling” Is generated, but according to the present invention, such unpleasant rocking feeling does not occur.

Further, according to the present invention, the inconvenience that the seat of the vehicle moves forward of the vehicle body when the vehicle collides is almost completely prevented by the present invention. Further, according to the present invention, the connecting portion of the vehicle seat can be manufactured at a relatively low cost.

Other claims dependent on claim 1 describe advantageous embodiments of the vehicle seat according to the present invention, and specific structures and detailed structures suitable for carrying out the present invention. is there.

The connecting portion of the adjustable support structure transmits the load applied by the occupant when sitting on the seat to the lower structure of the seat, and includes a bearing mechanism provided on each of the left and right sides of the seat carrier. Contains. In addition, it is preferable that the pivot axes of these bearing mechanisms be on the same straight line.

By providing a holding portion for holding both the bearing mechanism and the elastic member combined therewith, the bearing mechanism and the elastic member can be mounted on the seat support in a simple manner. Also, the upper limit and the lower limit of the movable range of the bearing mechanism by the elastic support can be defined.

Further advantages, features and details of the present invention will become apparent from the following description of preferred embodiments, taken in conjunction with the accompanying drawings.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic side view of a vehicle seat 10 mounted on an automobile.
Is provided with a seat support 14 for supporting the seat 12. The seat support 14 is configured as a frame structure in the illustrated example, but is not limited thereto, and may be configured as a shell structure. Seating part carrier 14
A backrest 16 is swingably connected to the upper end of the headrest 1, the height of which is adjustable.
8 are equipped. The seat support 14 has a front support device 24 pivotally connected to a front portion 20 of the seat support 14 at a connecting portion 21, a rear portion 22 of the seat support 14, and a connecting portion 23. It is supported by a vehicle body-side mounting member 28 that forms a part of the seat lower structure 30 via a rear support device 26 that is swingably connected. Connecting part 21
In order to clarify and, the cover 15 of the seat carrier 14 is shown in a state where the portions corresponding to the connecting portions are broken. The front and rear portions of the vehicle body-side mounting member 28 are fixed to two seat position adjusting rails 32 extending in the front-rear direction of the vehicle body in parallel with each other. It is slidably mounted on guide rails 36 fixed to the vehicle body floor 34, and can be locked to the guide rails 36.

The front support device 24 includes a pair of left and right swing links 38, each of which is connected to the vehicle body side mounting member 28 whose lower end is fixed to the seat position adjusting rail 32. The connecting portion 39 is connected so as to be swingable about the swing axis VU. Similarly, the rear support device 26 includes a pair of left and right swing links 40, each of which is connected at its lower end to a vehicle body side mounting member 28 fixed to a seat position adjusting rail 32. The portion 41 is connected to be swingable about the swing axis HU. The upper ends of the pair of left and right swing links 38 of the front support device 24 are connected to the seat support 14 so as to be swingable about the swing axis VO at the connecting portion 21. The upper ends of the pair of left and right swing links 40 of the rear support device 26 are connected to the seat support 14 at the front connection portion 23 so as to be swingable about the swing axis HO. In the above, a pair of left and right parallelogram link mechanisms is constituted by a total of four swing links 38 and 40, whereby the seating portion carrier 14 moves relative to the lower seat structure 30. Height can be adjusted. In addition, four swing shaft centers HU, V
U, HO, and VO extend in the left-right direction of the vehicle body in parallel with each other. Further, at least one drive mechanism is used to swing and lock the swing links 38 and 40. In the illustrated example, the drive mechanism includes a gear 44 driven by a control motor 42. The gear 44 is meshed with a sector-shaped partial gear 46 formed on the rear swing link 40 provided with the drive mechanism.
The rear swing link 40 may be provided with a drive mechanism, and the front swing link 38 may be provided with a drive mechanism. In such a case, it is only necessary to adjust the height of the seat support 14. Instead, it is also possible to adopt a configuration in which the inclination of the seat support 14 can be adjusted.

The respective connecting portions 23 of the pair of left and right swing links 40 of the rear support device 26 are mounted on the seating portion carrier 14 so as to be movably guided in the up-down direction. 1 is provided for each of the swing links 40 via an elastic member 48 schematically shown in FIG.
It is supported by. The elastic member 48 has an elastic support function and a vibration damping function, and can be manufactured using a synthetic resin material or a metal material.

FIG. 2 is an enlarged view of the connecting portion 23 showing the region II of FIG. 1 in an enlarged manner, and FIG. 3 is a sectional view taken along the line III-III of FIG. As shown in the drawing, the pair of left and right connecting portions 23 at the rear includes a bearing mechanism 50 each connected to the swing link 40 so as to be swingable about the swing axis HO. It is composed of a bush 52 and a bolt 54. As is clear from FIG.
4 is a hole 5 formed at the upper end of the rear swing link 40.
The bolt 54 is connected to the swing link 40 by screwing the male screw portion 55 of the bolt 54 into the female screw portion 53 of the bush 52.

A pair of left and right side frame members 5 of the seat support 14
In FIG. 8, a substantially box-shaped accommodation space 60 extending in the up-down direction is defined at a position corresponding to the rear connecting portion 23, respectively. The elastic member 48 is formed in a shape and a size that fits exactly in the accommodation space 60.
0. The box-shaped accommodation space 60 has a shape in which the lower part and one side are open. At the lower end of the elastic member 48, a substantially semi-cylindrical bearing mechanism engaging recess 62 whose axis extends in the left-right direction of the vehicle body is formed. So that the bearing mechanism 50 housed in the housing space 60 can be fitted.
It is formed according to the shape of 0. The accommodation space 60
The lower part is the cover member 6 screwed to the side frame member 58.
The cover member 64 and the housing space 60 form a holding portion 66 that surrounds and holds the bearing mechanism 50 and the elastic member 48 combined therewith. When the occupant is not sitting on the vehicle seat 10, there is substantially no gap between the bearing mechanism 50 and the cover member 64, and between the bearing mechanism 50 and the elastic member 48. I am trying to become.

If a load is applied to the connecting portion 23 because an occupant sits on the vehicle seat 10, the bearing mechanism 50 opposes the elastic force of the elastic member 48 in accordance with the magnitude of the load. Further, it moves relatively upward with respect to the seating portion carrier 14 within the range of the movable range F by the elastic support. At this time, the bearing mechanism 50 extending in the horizontal direction is elastically supported in the vertical direction by the elastic support function and the vibration damping function of the elastic member 48, and the vertical vibration of the bearing mechanism 50 is attenuated. The lower limit of the movable range F of the bearing mechanism 50 is
It is defined by the cover member 64.

The present invention is not limited to the embodiment described above. For example, the holding portion 66 that holds the bearing mechanism 50 may be configured separately from the seating portion carrier 14 and fixed to both sides of the seating portion carrier 14. Are also included in the scope of the present invention. Further, not only the rear support device 26 but also the front support device 24 may be configured to elastically support the seat support 14.

[0018]

As is apparent from the above description, according to the present invention, in a vehicle seat in which the height of the seating portion can be adjusted, the seat performance during traveling of the vehicle can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a vehicle seat according to the present invention in which a seat support is supported by a lower seat structure by swinging links of a front support device and a rear support device.

FIG. 2 is an enlarged view of a region II of FIG. 1, showing a connecting portion of a rear support device guided movably in a vertical direction and elastically supported by a seat carrier of a vehicle seat according to the present invention. It is an enlarged view.

FIG. 3 is a cross-sectional view of the connecting portion of the rear support device connected to the seat support, taken along the line III-III of FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 vehicle seat 12 seating portion 14 seating portion carrier 23 connecting portion 24 front support device 26 rear support device (adjustable support device) 28 vehicle body side mounting member 48 elastic member 50 bearing mechanism

Claims (7)

[Claims] 1. A seat support (14) for supporting a seat (12), the seat support (14) swinging to the front (20) of the seat support (14). A front support device (24) operatively connected to a rear support device (26) swingably connected to a rear portion (22) of the seat carrier (14).
And is supported by the vehicle body side mounting member (28) through
The support device (26) of at least one of the front and rear support devices is moved to the height of the seat support (14),
And / or the inclination can be adjusted, and the seat support (14) is elastically attached to the vehicle body-side mounting member (28) at the connection point via the at least one adjustable support device (26). In the supported vehicle seat, the connecting portion (23) of the adjustable support device (26) is attached to the seating portion carrier (14) so as to be guided so as to be movable only in the vertical direction. And a vehicle seat supported by the seat support (14) via at least one elastic member (48). 2. A bearing in which the connecting portions (23) of the adjustable support device (26) are disposed on the left and right sides of the seat carrier (14), respectively, and are each combined with an elastic member (48). 2. The vehicle seat according to claim 1, further comprising a mechanism. 3. A holding portion (6) for holding each of said bearing mechanisms (50) together with said elastic members (48) associated with said bearing mechanisms (50).
The vehicle seat according to claim 2, further comprising (6). 4. A housing space (60) in which the holding portion (66) extends substantially vertically and formed in the seating portion carrier (14), and a seating portion carrier (14). And a fixed cover member (64).
The vehicle seat according to claim 3, wherein the bearing mechanism (50) and the elastic member (48) are surrounded. 5. The cover member (64) combined with an accommodation space (60) accommodating the bearing mechanism (50) by setting a lower limit of a movable range (F) of the bearing mechanism (50) by elastic support. The vehicle seat according to claim 4, characterized by: 6. A bearing mechanism engaging recess (62) having a substantially semi-cylindrical surface shape corresponding to the shape of the bearing mechanism (50) is formed at a lower end of the elastic member (48). The vehicle seat according to claim 2, wherein 7. A pair of left and right swing links (3) in which the front support device (24) and the rear support device (26) are respectively swingably connected to a pair of left and right seat position adjustment rails (32). 38. The vehicle seat according to claim 1, further comprising: (38, 40).