JPH0995166A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an upper body from falling forward by providing an engaging claw fitted to a leg part and engaged with the rear end part of a seat part, or a compression coil spring fitted to the back face of the front half part of the seat part and upward energizing it, and instantaneously moving the seat part to a fixed position at receiving a shock. SOLUTION: When a shock from the front part is detected with a sensor, or when the push button of a driver's seat or the like is pushed, an electromagnet 12 as a seat rear end part engagement releasing means 32 is excited, and hence the engaging claw 7 is moved against the frontward energizing force of a compression coil spring 11, so as to release engagement with an engaging groove 10. Further, when the engagement is not released and impulsive force is applied, a supporting shaft 4 fitted to the seat part 2 is advanced in a supporting shaft sliding bearing 5 against the rearward energizing force of a compression coil spring 6 by inertia force, so as to release engagement with the engaging groove 10. As a result, the seat part 2 on the normal position is moved, the seat part 2' on the fixed tilt position is absorbed by a buffer 8 interposed between a leg part 1 and itself, and hence an upper body is obstructed to deviate from the seat part 2'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat.

[0002]

2. Description of the Related Art A conventional seat for a vehicle is provided with a seat belt for protecting the upper body of a seated person so that the upper body is fixed to the seat to prevent forward curling. (See Jitsukai Sho 60-55545)

[0003]

In the above measures for protecting the upper body by the seat belt, for example, an additional airbag is required, the internal organs are damaged by the seat belt itself, and the wearing effect is not perfect. Is also low.

An object of the present invention is to use the impact force from the front instantaneously or to incline the seat by a method other than the impact force from the front by a sensor, a push button, etc. It is to provide a vehicle seat that can prevent such a situation.

[0005]

According to the above object, a vehicle seat according to the present invention, which instantaneously shifts the seat portion to a predetermined inclined position upon impact from the front, has a leg portion and a rear upper portion of the leg portion. The apparatus includes a back portion attached, a seat portion that is rotatable on a left and right support shaft attached to arbitrary portions on both sides, and a seat portion tilting means that is operated by using an impact force from the front. The seat tilting means is attached to the leg for biasing backward, or is attached to the seat for biasing forward, and is attached to the leg for engaging the rear end of the seat. The engaging claw A or the engaging claw B, which is attached to the rear surface of the front half of the seat portion and biases upward, is engaged with the compression coil spring C.

Further, according to the above object, the vehicle seat of the present invention in which the seat portion is moved to a predetermined inclined position by a sensor or a push button of the driver's seat is mounted on the leg portion and above the rear portion of the leg portion. A back portion, a seat portion which is attached to arbitrary portions on both sides and is rotatable about a support shaft in the left-right direction, and a seat portion tilting means which is operated by a method other than an impact force from the front side. The seat tilting means includes a rotatable bearing mounted on the leg, an engaging claw A that is mounted on the leg and engages with a rear end of the seat, or is mounted on the rear surface of the front half of the seat and is mounted above. Engaging claw B that engages with compression coil spring C and engaging claw A that disengages from each other, for example, seat rear end disengaging means such as electromagnet A, or engaging claw B for releasing the engagement, for example, a seat front half-engagement releasing means such as an electromagnet B. To have.

Further, in each of the above vehicle seats, the means for increasing the tilting speed of the seat portion or adjusting the mounting position of the support shaft with respect to the seat portion further includes a weight at the rear end portion of the seat portion. It is to install.

Further, in each of the above-mentioned vehicle seats, the means for inclining the seat portion in stages is the rear end portion of the seat portion, or
It further comprises a plurality of engagement grooves formed in the weight and an engaging claw A instantaneous moving means or an engaging claw B instantaneous moving means, and the engaging claw A instantaneous moving means is engaged. The engagement release claw A adjacent to the claw A, the engagement release button A, and the engagement release claw A and the engagement release button A, for example, an oil tube B, are connected, and the above-mentioned engagement is performed. The engaging claw B instantaneous movement means connects the engagement releasing claw B close to the engaging claw B, the engagement releasing button B, and the engagement releasing claw B and the engagement releasing button B, for example, an oil tube B. It consists of and.

Further, in each of the above vehicle seats, the means for returning the inclined seat portion to the normal position is a circumscribed circular fan gear or an inscribed circular fan gear attached to the back surface of the seat portion. , Engages with the circumscribed circular fan gear or the inscribed circular fan gear, and drives only in the normal direction seat direction,
It further comprises a seat portion returning means composed of a transmission gear that idles in the opposite direction and a motor to which the transmission gear is attached.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The vehicle seat of the present invention constructed as described above uses a method other than the impact force from the front either instantaneously by utilizing the impact force from the front or by a sensor or a push button. By tilting the seat portion with, it is possible to prevent the front body from leaning forward due to an impact, and the object of the present invention can be achieved.

It should be noted that the internal organs will not be damaged unless the seat belt of the occupant of the front is worn by the frontal impact, but the knee belt can be worn in case of a fall of the vehicle due to a rollover accident or the like. You may do it.

Further, it is desirable to interpose a shock absorber between the leg portion and the leg portion at the predetermined inclined position of the seat portion.

Further, the mounting position of the support shaft sliding bearing with respect to the leg portion or the seat portion may be only the central portion or both end portions.

Further, the seat rear end disengagement means, or
As the seat front half engaging means, for example, a hydraulic device, explosive, or the like may be used in addition to the electromagnet.

Further, instead of the oil tube A or the oil tube B, a Bowden wire or the like may be used.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to the drawings. FIG. 1 shows a seat tilting means and a seat returning means which are operated by both a frontal impact force and a method other than the frontal impact force. 1 is a schematic side view of a vehicle seat according to an embodiment of the present invention in which a vehicle and a vehicle are installed together, and FIG.
FIG. 3 is a schematic side view showing the seat portion returning means in FIG.

Furthermore, FIG. 3 shows an embodiment in which a seat tilting means that operates only by a method other than the impact force from the front and a seat returning means are provided side by side. It is a schematic side view explanatory drawing.

Further, FIG. 4 is different from FIG. 1 in the case where the seat tilting means and the seat returning means which operate by both the front impact force and the method other than the front impact force are provided side by side. 5 is a schematic side view of a portion of the vehicle seat of the present invention showing one embodiment, taken along the dashed-dotted line C-D2 in FIG. 5, and FIG. FIG. 6 is a schematic plan explanatory view, and FIG. 6 is a schematic side explanatory view showing the seat portion returning means in FIGS.

First, in FIG. 1, a leg portion 1 mounted on the floor of a vehicle, a back portion 3 mounted on a rear portion of the leg portion 1, and both sides of the leg portion 1 are urged rearward. Back biasing means, for example, compression coil spring A6
And a support shaft 4 which is supported in the support shaft slide bearing 5 so as to be rotatable and slidable in the front-rear direction.
Are attached to the optional parts on both sides, and the seat part 2 in the normal position is attached.
And are shown.

The support shaft slide bearing 5 may be mounted on the leg portion 1 located at the center of the support shaft 4, and
The seat 2 may be mounted on both sides and the front urging means for urging the seat 2 forward may be stored, and the effect on the impact is the same.

Further, a shock absorber 8 interposed between the rear rear surface of the seat portion 2 and the leg portion 1 and a weight 9 mounted on the rear rear surface of the rear end portion of the seat portion 2 and having a plurality of engaging grooves 10 formed therein. And engaging with the engaging groove 10 at the lowermost end, which is the seat rear end engaging means 32, for example, close to the electromagnet A12, for example, a forward biased member by a compression coil spring B11. The engaging claw A7 is shown, and the electromagnet A12 is electrically connected to a sensor or a push button of the driver's seat. Incidentally, as the seat rear end disengagement means 32, a hydraulic device, explosives, etc. May be used.

Further, as the engaging claw A instant moving means 34 for releasing the engagement of the engaging claw A7 by another means, an engaging release claw A14 close to the engaging claw A7 and an engaging release button at the other end. A1
5 and the both are connected, for example, an oil tube A13
And are shown.

A Bowden wire or the like may be used instead of the oil tube A13.

Further, a motor control switch A17 electrically connected to a motor A16 (not shown) and, for example, a circumscribed circular fan gear 18 attached to the back surface of the seat portion 2 are shown. An inscribed circular sector gear 21 may be attached instead of the gear 18.

Next, in FIG. 2, a circumscribing circular sector gear 18 attached to the rear surface of the seat 2 located rearward of the support shaft 4 in FIG. Two
A seat portion including a transmission gear 19 that drives only in the normal position direction and idles in the opposite direction, a motor 16 to which the transmission gear 19 is attached, and a motor control switch A17 electrically connected to the motor 16. Return means are shown.

In addition, in FIG. 1 and FIGS. 3 and 4 described later, the seat portion 2'at a predetermined inclined position is shown by a chain double-dashed line,
It is distinguished from the seat portion 2 in the normal position.

Then, when the sensor detects that the vehicle seat of the present invention configured as shown in FIGS. 1 and 2 as described above receives a shock from the front, or the push button or the like of the driver's seat is pushed. In this case, the seat rear end disengagement means 32, for example, the electromagnet A12 is excited to move the engagement claw A7 against the forward biasing force of the compression coil spring B11. The engagement with the mating groove 10 is released.

Further, when the above-mentioned disengagement is not performed for some reason and an impact force from the front is applied, the support shaft 4 attached to the seat portion 2 together with the seated person due to the inertial force is, for example, a compression coil spring. It advances in the support shaft sliding bearing 5 against the rearward biasing force of A6, and the engagement with the engagement groove 10 is released.

As a result, the seat portion 2 in the normal position moves,
The seat portion 2 ′ at the predetermined inclined position is absorbed by the shock absorber 8 interposed between the seat portion 2 ′ and the leg portion 1.

Since the thigh of the seated person approaches the chest with the waist bent, it is possible to prevent the upper body from deviating from the seat 2 ', and even if it deviates, the head does not move. As it follows the thighs, if there is a handle, it will slide on the back.

When the weight 9 is attached to the rear end portion of the seat portion 2, a bending moment acts on gravity to increase the inclination speed of the seat portion 2, or the weight of the seat portion 2 is increased. The mounting position of the support shaft 4 can be adjusted.

Further, although a seat belt for protecting the upper body of a seated person is not necessary, a knee belt may be worn in case of a fall due to a vehicle rollover accident or the like.

When the seat portion 2'in the inclined position is returned to the seat portion 2 in the normal position, the motor control switch A
17 is operated to rotate the motor 16, and the transmission gear 19 attached to the motor 16 is meshed with, for example, a circumscribing fan gear 18 so that the meshing is not damaged even if the meshing is temporarily disengaged at the time of impact. I am doing it.

Further, when the seat portion 2 is engaged at a desired inclined position, the engagement releasing button A15 of the engaging claw A instantaneous moving means 34 is operated to move the engaging grooves 10 from the lower stage to the upper stage. The engaging claw A7 is moved toward each stage.

Further, regarding the seat tilting means in FIG. 1 and FIGS. 3, 4 and 5, which will be described later, the seat 2 is mounted only by an impact force from the front or by a method other than the impact force from the front. The seat tilting means for shifting to the tilted position may be implemented independently, or the seat returning means may be removed.

Further, the seat portion returning means in FIG. 2 and FIG. 6 described later may be attached to any of FIG. 1 and FIGS.

Further, the engagement release button A1 shown in FIG.
The motor control switch A17 and the motor control switch A17 may be attached to a driver's seat or the like so that they can be remotely controlled.

Next, with respect to FIG.
3 will be omitted and only the differences will be described. In FIG. 3, the support shaft 4 is supported only by the freely rotatable bearing 20, and therefore the circumscribed circular fan gear 18 is used. Since the meshing transmission gear 19 does not temporarily disengage, the meshing position can be freely set.

Then, the side surface position of the seat portion 2 to which the support shaft 4 is attached is retracted as compared with the case of FIG. 1, so that the front end position of the seat portion 2'in the inclined position is higher than that of the case of FIG. ing.

Further, the motor control switch A17 is attached to the driver's seat or the like and is not shown in FIG.
In addition, a cover A31 is attached to the front of the seat returning means in an upward direction from the leg 1.

In FIGS. 4 and 5, the supporting shaft 4 is supported by supporting shaft sliding bearings 5 mounted on both sides of the leg 1 and biased rearward, as in FIG. Therefore, it is not shown in FIG.

The seat tilting means by means other than the front impact force and the front impact force in FIG. 1 are both attached to the rear surface of the front half of the seat portion 2.

A compression coil spring C2 is attached to the rear surface of the front half of the seat portion 2 and the other end is attached to the leg portion 1.
Engaging claw B2 engaging with the uppermost end of the engaging groove 10 formed by 2
5 and a guide shaft 30 slidably passing through the engaging claw B25
And a compression coil spring D24 which is held by the guide shaft 30 and biases the engaging claw B25 forward.

Further, in the vicinity of the engaging claw B25, a seat portion first half engagement releasing means 33, for example, an electromagnet B23 is attached to the leg portion 1, and is electrically connected to a sensor (not shown) or a push button. However, a hydraulic device, explosive, or the like may be used as the seat front half disengagement 33.

Further, around the compression coil spring C22,
A cover B36 is attached above the leg 1 with a predetermined gap.

Further, the engagement claw B25 is used as the engagement claw B instantaneous movement means 35 for releasing the engagement of the engagement claw B25 by another means.
The engagement release claw B26 that is in close proximity to the engagement release button B27 at the other end, for example, an oil tube B
And 28 are shown.

A Bowden wire or the like may be used instead of the oil tube B28.

When the seat portion 2 is to be engaged at a desired inclination angle, the engagement release button B27 of the engagement claw B instantaneous movement means 35 is operated, and a plurality of engagement grooves which are the compression coil springs C22 are formed. The engaging claw B25 is moved from the upper stage to the lower stage of the stage 10 for each stage.

Next, in FIG. 6, the support shaft 4 in FIGS.
The inward circular sector gear 21 attached to the back surface of the seat 2 at the front and the inward circular sector gear 21 meshes with each other to form the seat 2
A seat portion including a transmission gear 19 that drives only in the normal position direction and idles in the opposite direction, a motor 16 to which the transmission gear 19 is attached, and a motor control switch B29 electrically connected to the motor 16. A means of return is shown.

When the sensor senses that the vehicle seat of the present invention constructed as shown in FIGS. 4, 5 and 6 is impacted from the front, or the push button or the like of the driver's seat is pressed. When pushed, the seat front half engaging button 33, for example, the electromagnet B23 is excited, and, for example, the engaging claw B25 moves against the forward biasing force of the compression coil spring D24. Compression coil spring C
The engagement with the engagement groove 10, which is 22, is released.

Further, when the above-mentioned disengagement is not performed for some reason and an impact force from the front is applied, the support shaft 4 attached to the seat portion 2 together with the seated person by the inertial force is, for example, a compression coil spring. It moves forward in the spindle slide bearing 5 against the rearward biasing force of A6, and the engagement with the engagement groove 10 is released.

When the seat portion 2'in the inclined position is returned to the seat portion 2 in the normal position, the motor control switch B
29 is operated to rotate the motor 16 and the transmission gear 19 attached to the motor 16 is meshed with, for example, an inscribed circular sector gear 21 so that the meshing is not damaged even if the meshing is temporarily disengaged at the time of impact. Is done.

[0053]

Since the vehicle seat of the present invention is constructed as described above, it has the following effects.

Since it is not necessary to wear a conventional seat belt for protecting the upper body, damage to internal organs and the like can be eliminated, and a side collision can be easily dealt with when the sensors are attached in the left and right directions of the vehicle. .

Damage to the head due to obstacles in the front such as a handle is eliminated.

Centralized safety management is possible for a large number of vehicles such as buses and passenger planes.

[Brief description of drawings]

FIG. 1 is a side view illustrating a case where an impact force and a seat portion inclination means that operates with both the impact force and a seat portion return means are provided side by side.

FIG. 2 is a side view of a seat returning means in FIG.

FIG. 3 is a side view illustrating a case where a seat tilting means that operates only by an impact force and a seat returning means are provided side by side.

FIG. 4 is a part of FIG. 5 in a chain line CD-D2 in a case different from FIG. 1 in which a seat tilting means that operates with both impact force and other than the impact force and a seat returning means are provided side by side. FIG.

5 is an explanatory plan view taken along the dotted line A-B2 in FIG. 4. FIG.

FIG. 6 is a side view of the seat returning means in FIGS.

[Explanation of symbols]

 1 Leg 2 Seat 3 Back 4 Spindle 5 Spindle Sliding Bearing 6 Compression Coil Spring A 7 Engaging Claw A 8 Buffer 9 Weight 10 Engaging Groove 11 Compression Coil Spring B 12 Electromagnet A 13 Oil Tube A 14 Engagement Engagement release claw A 15 Engagement release button A 16 Motor 17 Motor control switch A 18 Circumscribed circular fan gear 19 Transmission gear 20 Bearing 21 Inscribed circular fan gear 22 Compression coil spring C 23 Electromagnet B 24 Compression coil spring D 25 Engagement Claw B 26 Engagement Release Claw B 27 Engagement Release Button B 28 Oil Tube B 29 Motor Control Switch B 30 Guide Shaft 31 Cover A 32 Seat Rear End Disengagement Means 33 Seat Front Half Disengagement Means 34 Engaging claw A Instantaneous moving means 35 Engaging claw B Instantaneous moving means 36 Cover B

Claims (5)

[Claims] 1. A leg part (1), a back part (3) attached to the upper rear part of the leg part (1), and a left-right support shaft (4) attached to arbitrary parts on both sides of the leg part (1). The seat (2) is provided with a seat tilting means that is operated by using an impact force from the front, and the seat tilting means is
A support shaft sliding bearing (5) that is attached to the leg (1) for biasing backwards or is attached to the seat (2) for biasing forwards.
And an engaging claw A (7) that is attached to the leg portion (1) and engages with the rear end portion of the seat portion (2), or is attached to the rear surface of the front half of the seat portion (2) and urges upward. , Compression coil spring C (2
A vehicle seat that is configured with an engaging claw B (25) that engages with (2), and that instantaneously shifts the seat portion (2) to a predetermined inclined position upon impact from the front. 2. A leg part (1), a back part (3) attached to the upper rear part of the leg part (1), and a left-right support shaft (4) attached to arbitrary parts on both sides of the leg part (1). The seat (2) and the seat tilting means that is operated by a method other than the impact force from the front are provided, and the seat tilting means is a rotatable bearing ( 20)
And an engaging claw A (7) that is attached to the leg portion (1) and engages with the rear end portion of the seat portion (2), or is attached to the rear surface of the front half of the seat portion (2) and urges upward. , Compression coil spring C (2
2) which disengages the engaging claw B (25) and the engaging claw A (7), for example, a seat rear end disengaging means (32) such as an electromagnet A (12). , Or engaging claw B (25)
, The seat front half disengagement means (33) such as the electromagnet B (23), and the sensor,
Alternatively, a vehicle seat in which the seat portion (2) is moved to a predetermined inclined position by a push button or the like on the driver's seat. 3. A weight (9) is further attached to a rear end portion of the seat portion (2) to increase a tilting speed of the seat portion (2), or a spindle (4) is attached to the seat portion (2). The vehicle seat according to claim 1, wherein the position of the vehicle seat is adjusted. 4. A rear end portion of the seat portion (2) or a weight (9).
And a plurality of engaging grooves (10) formed in the engaging claw A and the instant moving means (34) or the engaging claw B instant moving means (3).
5), and the engaging claw A instantaneous moving means (34) described above includes an engagement releasing claw A (14) close to the engaging claw A (7) and an engagement releasing button A ( 15) and an engagement release claw A (14) and an engagement release button A (15), for example, an oil tube A (13),
Further, the engaging claw B instantaneous movement means (35) includes an engagement releasing claw B (26) close to the engaging claw B (25), an engagement releasing button B (27), and an engagement releasing claw. The vehicle according to any one of claims 1 to 3, which is configured by, for example, an oil tube B (28) connected to the B (26) and the disengagement button B (27) and inclining the seat portion (2) stepwise. Seat for. 5. A circumscribed circular sector gear (18) or an inscribed circular sector gear (21) attached to the back surface of the seat portion (2).
With the circumscribed circular sector gear (18) or the inscribed circular sector gear (21) to drive only in the normal position of the seat (2) and in the opposite direction. A seat returning means comprising a transmission gear (19) that idles and a motor (16) to which the transmission gear (19) is attached is further provided, and the inclined seat (2 ') is returned to a normal position. 1 to
The vehicle seat according to item 4.