JPH06105727A - Seat cushion structure - Google Patents

Seat cushion structure

Info

Publication number
JPH06105727A
JPH06105727A JP4279195A JP27919592A JPH06105727A JP H06105727 A JPH06105727 A JP H06105727A JP 4279195 A JP4279195 A JP 4279195A JP 27919592 A JP27919592 A JP 27919592A JP H06105727 A JPH06105727 A JP H06105727A
Authority
JP
Japan
Prior art keywords
frame
seat
seat cushion
link
pan frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4279195A
Other languages
Japanese (ja)
Inventor
Shigeru Nakahara
茂 中原
Original Assignee
Tachi S Co Ltd
株式会社タチエス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tachi S Co Ltd, 株式会社タチエス filed Critical Tachi S Co Ltd
Priority to JP4279195A priority Critical patent/JPH06105727A/en
Publication of JPH06105727A publication Critical patent/JPH06105727A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To improve the comfortableness for occupants seated on the rear seat of a passenger car or the like by damping and buffering impact and vibration, etc., of the rear seat CONSTITUTION:A seat suspension system 19, comprising a pan frame 14 and a seat cushion frame 16 connected together via a freely expanding link mechanism 20 and used respectively as upper and lower frames and a biasing means 32 for exerting a biasing force as a suspension force on the pan frame, is built into the seat cushion 18 of a rear seat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion structure which forms a seating portion of a seat of a vehicle or the like and can elastically support the buttocks, thighs and the like of a seated person.

[0002]

2. Description of the Related Art For example, in a seat cushion for a rear seat of a passenger car or the like, a seat pad made of an elastic material is placed on a seat cushion frame in which a seat spring made of an S spring or the like is stretched, and a trim made of a skin or the like. The cover covers the seat pad together with the seat cushion frame to form a predetermined shape.

The seat cushion of the rear seat elastically supports the buttocks, thighs, etc. of the seated person under the elasticity of the seat pad, imparts cushioning to the seated person, and transmits from the vehicle floor or the like. It is designed to absorb shocks and vibrations.

[0004]

However, in the known structure, since the elastic force of the elastic body mainly of the seat pad only elastically supports the hips and the like of the seated person, cushioning and The shock and vibration cannot be sufficiently buffered. Therefore, the riding comfort of the seated person may be impaired and the comfort may be reduced.

Particularly, in the rear seats of passenger cars,
In general, since it is required to be thin, the thickness of the seat pad is limited, and it is difficult to absorb shocks, vibrations and the like.

Here, for example, a seat suspension device for suspending and supporting a seat under a biasing force (suspension force) from a biasing means or the like and cushioning shocks, vibrations, etc. transmitted to the floor surface is used as a rear seat. Can be used.

However, in this type of seat suspension device, the upper frame is usually connected to the lower frame via a stretchable link so as to be able to move up and down, and the link is biased in the extension direction, that is, the rising direction. The bias means is the upper frame,
Since it is interposed between the lower frames, an increase in the size of the seat suspension device in the vertical direction cannot be avoided.

That is, if the seat suspension device is simply used for the rear seat, the size of the seat cushion itself may be increased, so that the seat suspension device cannot be easily used.

According to the present invention, by absorbing shock, vibration and the like,
The purpose is to provide a seat cushion structure that improves the comfort of the seated person.

[0010]

To achieve this object, according to the present invention, a seat suspension device is provided with:
Built into the seat cushion. The seat suspension device is formed by using a pan frame and a seat cushion frame, which are connected via an expandable link mechanism, as an upper frame and a lower frame, and having a biasing means for applying a biasing force to the pan frame as a suspension force. Has been done.

The seat pad is placed on the pan frame, and the seat cushion is configured so that the seated person can be elastically suspended and supported under the suspension force of the seat suspension device in addition to the elasticity of the seat pad. ing.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

As shown in FIG. 1, in a seat cushion structure 10 according to the present invention, a pan frame 14 on which a seat pad 12 is placed is an upper frame (upper frame), and a seat cushion frame serving as a skeleton of a seat cushion 16 is formed.
A thin seat suspension device 19 having 18 as a lower frame is incorporated in the seat cushion.

Such a seat suspension device 19
The pan frame (upper frame) 14 is connected to a seat cushion frame (lower frame) 18 so as to be able to move up and down, for example, via a link mechanism 20 composed of parallel links.

As shown in FIG. 2 in addition to FIG. 1,
The link mechanism 20 is formed, for example, as a parallel link having a pair of link arms 20a and 20b which are separated from each other in the front and rear direction, and is installed between the front end and the rear end of the seat cushion frame 18, and on the left and right sides of a fixed base plate 22, The lower end of each link arm is pivotally attached.

Here, at the upper ends of the link arms 20a and 20b,
For example, with a rotatable roller 24,
A lower end of the support link 26 is pivotally attached to an intermediate position of each link arm. Then, by disposing the rollers inside the roller guides 28 provided at the corresponding positions of the pan frame 16 and pivotally attaching the upper end of the support link 26 to the mounting bracket 30, the pan frame causes the link mechanism 20, that is, Is connected to the seat cushion frame 18.

In such a structure, the rolling of the roller 24 in the roller guide causes the link arms 20a and 20b and the support link 26 to be caused by the elevation of the pan frame 16 with respect to the base plate 22, that is, the seat cushion frame 18.
The change of the angle between them is ensured, and the pan frame is smoothly moved up and down with respect to the seat cushion frame.

Incidentally, such link arms 20a, 20b,
The link mechanism 20 having the support link 26 has a known structure, and since the structure itself is not the gist of the present invention, it will not be described in detail.

As can be seen from FIGS. 1 and 2, in the present invention, the pan frame 14 includes, for example, the rear half portion 14a corresponding to the hips of the seated person and the front half portion corresponding to the thighs. It is formed with a step difference that is lower than 14b. Then, the base plate 22 is bent and formed into a shape corresponding to the pan frame 14, and the front and rear link mechanisms 20 are respectively positioned at positions corresponding to the front half portion 14b of the pan frame which is the upper step portion and the rear half portion 14a which is the lower step portion. It is arranged.

That is, in such a structure, the shape of the pan frame itself corresponds to the cushion surface of the seat cushion 18, so that the seat pad 12
The seat cushion shape can be easily formed without changing the thickness of the seat cushion.

Further, since the rear half portion 14a of the pan frame is lower than the front half portion 14b, a forward slipping phenomenon, that is, a so-called submarine phenomenon can be sufficiently suppressed. Therefore, the seated person can maintain a good sitting posture without being affected by the action of acceleration or the like, and comfort and safety are sufficiently improved.

The seat suspension device 19 is formed, for example, with a biasing means 32 for biasing the pan frame 14 upward. As shown in FIGS. 1 and 2, as the biasing means 32, for example, a compression coil spring formed in a conical shape can be used.

As can be seen clearly from FIG. 2, the compression coil spring (biasing means) 32 is provided, for example, at a front end portion, an intermediate portion, and a rear end portion via a support bracket 34 arranged on either side. , Are arranged at six positions separated from each other on the left and right.

In such a structure, the pan frame 14 is
Under the biasing force of the compression coil spring 32, the base plate 2
2, that is, elastically supported with respect to the seat cushion frame 16. That is, the biasing force of the compression coil spring 32 can act on the pan frame 14 as a suspension force.

Further, as shown in FIGS. 1 and 2, a shock absorber 36 that absorbs and attenuates the shock, vibration and the like acting on the pan frame 14 and the seat cushion frame 16 from the vehicle floor or the like under its own expansion and contraction, For example, it is installed and pivotally mounted between the pan frame and the seat cushion frame.

The shock absorber 36 is pivoted at one end 36a to the bracket 38 of the pan frame 14 and pivotally attached at the other end 36b to the bracket 40 at the front end of the seat cushion frame. It is installed between.

In such a structure, the shock absorber 36 expands and contracts while swinging according to the degree of elevation of the pan frame 14 with respect to the seat cushion frame 16, and the shock acting on the pan frame and the seat cushion frame from the vehicle floor, It absorbs and attenuates vibrations, etc., and sufficiently suppresses transmission to occupants.

The structure of the shock absorber 36 is publicly known, and the structure itself is not the purpose of the present invention, and therefore will not be described in detail.

Here, in the present invention, the compression coil spring 32 is utilized by utilizing the extension limit point of the shock absorber 36.
The rise of the pan frame 14 with respect to the seat cushion frame 16 can be restricted. Then, according to the present invention, the rising limit position of the pan frame 14 in the unloaded state is set to the compressed state of the compression coil spring 32, and the biasing force having a substantially constant spring constant is used as the suspension force by the compression coil spring. It can be attached to the bread frame.

In such a configuration, since the biasing force having a substantially constant spring constant always acts on the pan frame 14, the downward stroke of the pan frame, that is, the compression coil spring.
An almost constant suspension force is applied to the pan frame without being affected by the magnitude of the 32 compression strokes.

Therefore, even with a short expansion / contraction stroke of the pan frame 14, the pan frame, that is, the suspension force acting on the seated person can be sufficiently secured, and the seated person can be surely given a cushioning feeling.

By applying a substantially constant suspension force, the seated person does not feel uncomfortable or uncomfortable.

As described above, in the seat cushion structure 10 of the present invention, the thin seat suspension device 19 having the pan frame 14 as the upper frame and the seat cushion frame 16 as the lower frame is built in the seat cushion 18. . In other words, the seat pad and hips of the seated person
In addition to the elasticity of 12, it is suspended and supported by a seat suspension device 19 that can dampen shocks, vibrations, etc., so shocks, vibrations, etc. transmitted to the floor surface can be reliably buffered, and transmission to a seated person is sufficient. Suppressed to.

Therefore, the seat suspension device 19 can be mounted even on the rear seat of a passenger car or the like, where the vertical space is easily limited, and the comfort of the seated person in the rear seat is improved.

Since the pan frame 14 and the seat cushion frame 16 are used as upper and lower frames, respectively, and these are supported by an expandable link mechanism 20 so as to be able to move up and down, a large size of the seat suspension device 19 in the vertical direction is obtained. The seat suspension device can be built in without increasing the size of the seat cushion 18.

Here, in the embodiment, the pan frame 14 serving as the upper frame has a step, and the rear half portion 14a is connected to the front half portion 14a.
It is formed lower than b. However, the present invention is not limited to this, and the upper frame may be formed from a flat pan frame, for example.

However, if the pan frame 14 is provided with a step, the seated occupant's buttocks sink from the thighs in the sitting posture, so that a comfortable sitting posture can be easily obtained and the buttocks slide forward. The so-called submarine phenomenon can be prevented, and the safety and comfort of the seated person can be sufficiently improved.

The link mechanism 20 is embodied as a parallel link, but is not limited to this. For example, a so-called X link in which a pair of link arms are assembled into a telescopic X shape is used. You may form.

However, if the link mechanism is a parallel link, the pan frame 14 and the seat cushion frame 16
Since the distance between the seat suspension device 19 and the seat can be sufficiently suppressed, it is possible to reliably prevent the seat suspension device 19 from becoming large in the vertical direction.

In the embodiment, the roller guide 28
By rolling the roller 24 inside the
The swing of 20a and 20b is secured. However, due to expansion and contraction,
It is sufficient if the gap between the upper ends of the link arms 20a and 20b and the upper end of the support link 26 can be guaranteed.
The configuration is not limited to the combination of the roller guide 28 and the roller guide 28. For example, a combination of a pin and a guide hole may be used.

However, the roller 24 and the roller guide 28
With this combination, the link arms 20a and 20b can be smoothly swung under the rolling motion of the rollers in the roller guide, so that the comfort of the seated person is further improved.

Further, in the embodiment, the link arm 20
The lower ends of a and 20b are pivotally attached to the seat cushion frame 16, and the upper ends of the link arms are attached to the pan frame 14 via rollers 24 and roller guides 38.
However, conversely, the upper ends of the link arms 20a and 20b may be pivotally attached to the pan frame 14, and the lower ends of the link arms may be attached to the seat cushion frame 18 via rollers and roller guides.

In this case, the lower end of the support link 26 is pivotally attached to the seat cushion frame, and the upper end thereof is pivotally attached to an intermediate position between the link arms 20a and 20b.

Further, the compression coil spring 32 is always kept in a compressed state by the pan frame 14 whose rising is restricted by the shock absorber 36. However, the invention is not limited to this, and for example, the expanded state of the compression coil spring 32 may be set as the rising limit position of the pan frame 14.

However, if the compression coil spring 32 is always in the compressed state, a biasing force having a substantially constant spring constant always acts on the pan frame 14, so that a substantially constant suspension force causes a short expansion / contraction stroke of the pan frame. Also in the above, the pan frame, that is, the suspension force acting on the seated person can be sufficiently secured. Therefore, it is possible to surely give the seated person a cushioning feeling, and sufficiently prevent the seated person from feeling uncomfortable and uncomfortable.

Here, the extension limit position of the shock absorber 36 is used to define the ascending limit position of the pan frame 14, but the invention is not limited to this. The rising limit position of the pan frame may be set by preventing excessive rising.

However, if the extension limit position of the shock absorber 36 is used, it is not necessary to provide a separate member, so that the number of parts can be reduced and the structure can be prevented from becoming complicated.

Further, the compression coil springs 32 are arranged at the front end portion, the middle portion, and the rear end portion at six positions separated from each other in the left and right directions. However, the compression coil spring 32 causes the pan frame 14 to
However, the present invention is not limited to this, as long as it is a well-balanced elastic support and the suspension force can be evenly applied to the pan frame as long as the number and location are sufficient.

Although the seat cushion structure 10 for a rear seat of a passenger car or the like is illustrated in the embodiment, it is not limited to the seat cushion structure 10 for a rear seat, but the seat cushion structure 10 is not limited to this. The present invention can also be applied to the above sheet.

Furthermore, the seat cushion structure of the present invention is not limited to seats for automobiles and the like, and can be used, for example, in trains and trains.
The present invention may be applied to a seat cushion structure for airplanes, ships and the like.

The above-mentioned embodiments are for explaining the present invention and do not limit the present invention in any way.
It goes without saying that the present invention includes all those which are modified or modified within the technical scope of the present invention.

[0052]

As described above, according to the seat cushion structure according to the present invention, since the seat suspension device capable of damping shocks, vibrations, etc. is built in the seat cushion, the shocks transmitted to the floor, Vibration and the like can be reliably damped, and transmission to the seated person is sufficiently suppressed. Therefore, the comfort of the seated person in the rear seat is improved.

Since the pan frame and the seat cushion frame are respectively an upper frame and a lower frame, and these are supported by an expandable link mechanism so as to be able to move up and down, the size of the seat suspension device in the vertical direction is sufficiently increased. The seat suspension device can be built in without increasing the size of the seat cushion.

If the link mechanism is a parallel link,
Since the space between the pan frame and the seat cushion frame can be sufficiently suppressed, it is possible to reliably prevent the seat suspension device from becoming large in the vertical direction.

Further, if a step is formed on the pan frame and the rear half is formed lower than the front half, the seated occupant's buttocks are depressed from the thighs in the sitting posture, so that a comfortable sitting posture can be easily obtained. At the same time, the so-called submarine phenomenon in which the hips slip forward can be prevented, and the safety and comfort of the seated person are sufficiently improved.

When the compression coil spring is constantly compressed, a biasing force having a substantially constant spring constant always acts on the pan frame, so that a substantially constant suspension force allows the pan frame to expand and contract even in a short expansion / contraction stroke. ,
The pan frame, that is, the suspension force acting on the seated person can be sufficiently secured. Therefore, it is possible to surely give the seated person a cushioning feeling, and sufficiently prevent the seated person from feeling uncomfortable and uncomfortable.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a seat cushion structure according to the present invention.

FIG. 2 is a schematic perspective view of a seat cushion structure.

[Explanation of symbols]

 10 seat cushion structure 12 seat pad 14 pan frame (upper frame) 16 seat cushion frame (lower frame) 18 seat cushion 19 seat suspension device 20 link mechanism 20a, 20b link arm 24 roller 26 support link 28 roller guide 32 biasing means (compression) Coil spring) 36 Shock absorber

Claims (4)

[Claims]
1. A seat cushion structure, which forms a seating portion of a seat and elastically supports the hips and thighs of a seated person under at least the elasticity of a seat pad, is connected via an expandable link mechanism. A seat suspension device having the above-described pan frame and seat cushion frame as upper and lower frames and having a biasing means for applying a biasing force to the pan frame as a suspension force is built into the seat cushion, and a seat pad is mounted on the pan frame. A seat cushion structure that is capable of elastically suspending and supporting a seated person under the suspension force of a seat suspension device that is placed and added to the elasticity of a seat pad.
2. A link mechanism is formed as a parallel link composed of a pair of link arms that are separated from each other in the front-rear direction, and one of the upper end and the lower end of each link arm is pivotally attached to a corresponding side of a pan frame or a seat cushion frame. At the same time, a roller is provided on the other of the upper end and the lower end of each link arm, and the other of the link arms is attached to the corresponding frame under the arrangement of the rollers in the roller guide of the corresponding frame, The seat cushion structure according to claim 1, wherein the other end of the support link, which is pivotally attached at one end to a side frame attached via a roller, is pivotally attached at an intermediate position of the link arm.
3. The bread frame is bent and formed with a step that lowers the rear half corresponding to the hips of the seated person, and the front and rear link mechanisms are the upper half and the lower half. The seat cushion structure according to claim 1 or 2, wherein the seat cushion structure is disposed at a position corresponding to each portion.
4. A shock absorber for generating a damping force under its own expansion and contraction is interposed between the pan frame and the seat cushion frame, and the expansion limit point of the shock absorber is used to make the pan frame in an unloaded state. The seat cushion structure according to any one of claims 1 to 3, wherein a rising limit position of the biasing means is set to a compression state of the biasing means, and a substantially constant spring constant of the biasing means can be applied to the pan frame.
JP4279195A 1992-09-25 1992-09-25 Seat cushion structure Granted JPH06105727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4279195A JPH06105727A (en) 1992-09-25 1992-09-25 Seat cushion structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4279195A JPH06105727A (en) 1992-09-25 1992-09-25 Seat cushion structure

Publications (1)

Publication Number Publication Date
JPH06105727A true JPH06105727A (en) 1994-04-19

Family

ID=17607763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4279195A Granted JPH06105727A (en) 1992-09-25 1992-09-25 Seat cushion structure

Country Status (1)

Country Link
JP (1) JPH06105727A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6197617B1 (en) 1997-10-28 2001-03-06 Nec Corporation Semiconductor device with high reliability of connection between projective electrode of semiconductor element and conductive wire of substrate and method of manufacturing the same
JP2007099195A (en) * 2005-10-07 2007-04-19 Toyota Motor Corp Occupant waist part restraint device
US8215694B2 (en) * 2008-10-07 2012-07-10 Polaris Industries Inc. ATV having arrangement for a passenger
US8226120B2 (en) 2007-02-09 2012-07-24 Polaris Industries Inc. Adjustable ergonomic vehicles
US8430442B2 (en) 2008-07-24 2013-04-30 Polaris Industries Inc. Tractor vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6197617B1 (en) 1997-10-28 2001-03-06 Nec Corporation Semiconductor device with high reliability of connection between projective electrode of semiconductor element and conductive wire of substrate and method of manufacturing the same
US6344372B1 (en) 1997-10-28 2002-02-05 Nec Corporation Semiconductor device with reliable connection between projective electrode and conductive wire of the substrate
JP2007099195A (en) * 2005-10-07 2007-04-19 Toyota Motor Corp Occupant waist part restraint device
US8226120B2 (en) 2007-02-09 2012-07-24 Polaris Industries Inc. Adjustable ergonomic vehicles
US8430442B2 (en) 2008-07-24 2013-04-30 Polaris Industries Inc. Tractor vehicle
US9080514B2 (en) 2008-07-24 2015-07-14 Polaris Industries Inc. Tractor vehicle
US8215694B2 (en) * 2008-10-07 2012-07-10 Polaris Industries Inc. ATV having arrangement for a passenger
US8678464B2 (en) 2008-10-07 2014-03-25 Polaris Industries Inc. ATV having arrangement for a passenger

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