JPH09226427A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resist against a shock in a collision without lowering a seat cushion longitudinal/vertical adjusting functions necessary for a seat. SOLUTION: A seat is provided with a seat frame 20 supported on a supporting base 10, which is installed on a floor face of a vehicle and is freely adjustable in height, via a longitudinal guide rail 30 so as to be moved forward/ backward, a seat back 40 supported reclinably on the seat frame 20, and a three point type seat belt 50, a part of which is guided to a shoulder part anchor 53 arranged on the seat back 40 side so as to be freely inserted/retracted into/ from a retractor. In this case, a guiding member 15, which constitutes the supporting base 10 and reinforces an upper frame 12, is integrated with at least one side face of the upper frame 12 to which a lower rail of the guide rail 30 is fixed, while one end of an emergency engaging member 21 whose the other end covers the guiding member 15 is fixed on the seat frame 20 side.

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 vehicle seat having a so-called three-point seat belt built-in and suitable for use mainly by a driver of a large vehicle such as a bus. is there.

[0002]

2. Description of the Related Art A seat belt in a vehicle is very important for protecting the occupant by preventing the occupant from hitting the windshield or being pushed out of the vehicle in the event of a vehicle collision. Something is well known. Such a seat belt is a so-called three-point type in which a lap belt for restraining the waist and a shoulder belt for restraining the upper torso are continuous and fixed on both sides of the waist and above one shoulder. It has become to.

Such a three-point type seat belt is disclosed in Japanese Patent Laid-Open No. 4-303054, and its retractor (in normal times, the seat belt can be freely moved in and out so that an occupant can move easily, and a collision can occur. In the event of an emergency such as restraining the movement of the seat belt to restrain the occupant to the seat), there are those that are fixed to the vehicle body side such as pillars, and those that are built into the seat itself "built-in type". Such a type in which the retractor is built in on the seat side changes the relative positional relationship of the seat belt with respect to the occupant regardless of the inclination degree of the seat back and the position change of the seat cushion in the front-back direction and the height direction. Therefore, it is more advantageous than the one in which the retractor described above is mounted on the pillar of the vehicle body or the like.

Although the built-in type three-point seat belt has many advantages as described above, the above-mentioned Japanese Patent Laid-Open No. 4-3.
The inventor of Japanese Patent Publication No. 03054 said, "Even though the physiques of the occupants vary widely, the position of the belt cannot be changed assuming that the belt position is adjusted to the average physique. Is not along the shoulder, and people with a large physique will have the problem that the lap belt will bite into the waist, "focusing on" the shoulder belt anchor part provided on one side of the seat back frame and the anchor part. A shoulder belt anchor portion having a lap belt anchor portion provided on one side portion of the seat cushion on the same side and a buckle provided on a side portion of the seat cushion opposite to the lap belt anchor portion and receiving a tongue plate. The invention proposes "a belt-integrated seat device in which the lap belt anchor portion is positioned inside."

However, according to the consideration of the present inventors, in the case of an accident on an ordinary road, in the case of causing a serious result to the occupant who is the driver in a collision accident at the time of high-speed driving on an expressway, for example, the occupant is The seated seat itself may be separated from the floor due to damage to the fixing device (support base) between the seat and the floor due to a large acceleration at the time of a collision, etc., and the built-in type three-point seat according to the prior art invention described above. Even if you use a belt,
The seat belt itself is integral (built-in) with the seat, which could be dislodged from the pedestal and cause serious consequences, thus rendering it useless.

Further, the present inventors have found that there are various demands for the three-point seat belt of this type as follows.

The three-point seat belt is mounted by inserting a tongue provided in the middle of the seat belt into a fixing device attached to the seat frame side. The fixing device is located on the right side or the left side of the seat cushion. The direction of the shoulder belt is decided depending on whether or not. For example, in the case of a one-man bus driver, it is more convenient for the shoulder belt to face from the upper left to the lower right so that the passenger can be treated with the right hand. On the other hand, although there are few direct receptions with passengers, various switch operations on the left side of the seat must be frequently performed.For example, for a tourist bus driver, the shoulder belt faces from upper right to lower left. It is better to be there. Also, depending on the layout of the walls and aisles in the passenger compartment, it may be decided whether to hang it from the upper right or upper left. You had better stay. In other words, it is preferable that the seat is a seat that allows such a change in how the seat belt is worn.

As described above, the built-in type three-point seat belt has the advantage that it fits the user's body even when the backrest is reclining or the seat cushion is adjusted in the front-back direction or the up-down direction. It needs to be effective and effective.

The retractor for fixing the seat belt freely in normal times and in an emergency such as a collision should be arranged in a stabilized place. If you don't, you may not be able to fully function when it comes to iza.

The seat belt pulled out from the retractor must be smoothly guided. The reason is,
This is because the seatbelt is not only used frequently, but also to protect the life of the user when it comes to a bad situation.

Not only the seat belt and the one for fixing the seat belt as described above, but also the respective parts constituting the seat are commonly used. So, for a certain type of seat,
It is extremely rare to custom-order the seat belt, the guide rails of the seat frame, and the like according to their types, and many common parts are used. By making the parts common, the manufacturing process of the seat can be simplified and the cost can be reduced.

While satisfying the above various requirements,
The present invention has been completed as a result of various investigations by the inventors of the present invention as to what should be devised on the seat side in order to fully exert the original role of the seat belt of protecting the occupant. .

[0013]

SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned circumstances, and the problem to be solved is to prevent a seat having a built-in three-point seat belt from receiving a shock in the event of a collision or the like. The structure of the three-point seatbelt should be further enhanced while assuming a structure that can withstand it sufficiently, and assuming this reinforcing structure.

That is, first of all, the object of the invention according to claim 1 is to provide a vehicle capable of sufficiently withstanding an impact at the time of a collision, etc. while not impairing the up / down / front / rear adjustment function of the seat cushion necessary for the seat. The purpose is to provide a seat.

The object of the invention according to claims 2 and 3 is to achieve the object of the above-mentioned claim 1, while assuming the following objects, that is, the invention of claim 2 Purpose: To be able to freely change the direction of the shoulder belt according to the situation in the passenger compartment or the needs of the user. The object of the invention of claim 3 is to guide the seat belt into the retractor while being hardly affected by the up-down or front-back adjustment of the seat cushion and the reclining of the backrest. To ensure that the retractor, which frequently pulls out and retracts the seat belt, can always perform its function stably. It is to provide a vehicle seat that can achieve the above.

[0016]

Means for Solving the Problems In order to solve the above problems, first, means adopted by the invention according to claim 1 will be described with reference numerals used in the following embodiments.
"A support stand that is mounted on the floor of the vehicle and has adjustable height
A seat frame 20 that can be moved back and forth by being supported by a guide rail 30 in the front-rear direction with respect to 0;
A three-point seat belt 50, which is reciprocally supported with respect to the seat frame 20, and a shoulder anchor 53 provided on the seat back 40 side, and a part of which is guided so that the seat belt 40 can freely move in and out of the retractor 60.
A vehicle seat having:
The guide member 15 that also reinforces the upper frame 12 is integrated with at least one side surface of the upper frame 12 to which the lower rail 32 of the guide rail 30 is fixed, and the guide member 1
The vehicle seat 10 is characterized in that the other end of the emergency engaging member 21 for covering the vehicle 5 at one end is fixed to the seat frame 20 side.
0 ".

That is, in the vehicle seat 100 according to the present invention, the retractor 60 for accommodating the seat belt 50 is attached to the support base 10 and the like, and the shoulder anchor 53 for guiding the seat belt 50 is seated. The seat belt 50 is attached to the back 40 and has a so-called built-in seat belt 50. The seat belt 50 is a vehicle seat 100 that can sufficiently withstand an impact such as a collision applied to the vehicle seat 100 through the seat belt 50. .

That is, in this vehicle seat 100, for example, as shown in FIGS. 1 and 2, a seat frame 20 supporting a seat cushion 22 is assembled on a support base 10 via a guide rail 30. However, in this vehicle seat 100, the seat frame 20 supporting the seat cushion 22 is sufficient on the support base 10 in the following points. Since the vehicle is reinforced, the occupant will not be affected by the large acceleration at the time of the collision of the vehicle.
There is no such thing as jumping forward every time.

First, the upper frame 12 forming the support base 10.
As shown in FIG. 4, a guide member 15 in the front-rear direction is integrated on the side surface of the. The guide member 15 is, so to speak, a prismatic shape and has a length capable of extending over the entire range in which the rear portion of the upper rail 31 forming the guide rail 30 moves back and forth. The side of the guide member 15 is covered with one end of an emergency engaging member 21 having a substantially U-shaped cross section, as shown in FIGS. The other end of the seat frame 20
It is integrated on the side.

As shown in FIG. 4A, the emergency engaging member 21 is normally only in the state of being close to the guide member 15 and is not mechanically connected to the guide member 15. . This is because the emergency engaging member 21 should not be an obstacle when adjusting the seat frame 20 in the front-rear direction, and the emergency engaging member 21 is always simply located on the side of the guide member 15 on the support base 10 side. In addition, this emergency engaging member 2
As shown in FIG. 2, for example, 1 is sufficiently short with respect to a long guide member 15, so that the entire guide member 1 is always provided no matter how the seat frame 20 is adjusted back and forth.
It is located somewhere on the side of 5.

Although the emergency engaging member 21 does not have any function at normal times, it has the following important functions at the time of collision. That is, first, if a vehicle equipped with the vehicle seat 100 collides during high-speed traveling on an expressway, the forward inertial force of the driver seated in the vehicle seat 100 passes through the seat belt 50. The seat frame 2 is added to the vehicle seat 100.
0 tends to be separated from the support 10.

By the way, generally, the seat frame 20 and the support base 10 are connected via a guide rail 30, and the guide rail 30 includes an upper rail 31 and a lower rail 32 formed by bending a relatively thin metal plate. Since they are formed by combining them so that they can move back and forth,
It is weak against a large forward forward inertial force of a driver or the like applied via the seat belt 50. Further, the connection of the seat back 40 to the seat frame 20 is performed by the two left and right arms forming the seat back frame in the seat back 40, but the seat back 40 must be reclining. The connection strength of either the left or right arm is weak because it must be done.

Therefore, the force when the seat frame 20 is about to be separated from the support base 10 due to the collision of the vehicle is the force for lifting the rear portion of the seat frame 20, or the seat frame 20 is supported. 10
It becomes a force to pull apart while rotating. Although the structure of the guide rail 30 alone cannot withstand the force in any case, the emergency engaging member 21 engages with the guide member 15 at that time.

As a result, the seat frame 20 is not further rotated and the rear part is not lifted, but remains held on the support base 10 side, and an inertial force is applied to the seat frame 20. The seat frame 20 does not collide with the driver through the front glass of the vehicle and jump out of the vehicle even if it is added via the vehicle.

In order to solve the above-mentioned problems, the means adopted by the invention according to claim 2 is, in the vehicle seat 100 according to claim 1, the retractor 60 of the vehicle seat 100 and the lower frame constituting the support base 10. 11 is attached to the center of the back surface.

That is, in the vehicle seat 100 according to the second aspect, the seat belt 50 can be mounted and changed not only in the direction shown by the solid line in FIG. 1 but also in the direction shown by the phantom line. Even if such a change is made, the retractor 60 can always function stably. In other words, this type of vehicle seat 100
When the seat belt 50 is built into the vehicle seat, it is necessary to change the direction of the shoulder belt to the left or right as described in the section of the related art. However, in the vehicle seat 100, for example, the angle adjusting hole of the support plate 61 is used. By selecting 62, the direction of the retractor 60 can be freely changed. The vehicle seat 100 is configured such that the retractor 60 is arranged in the center of the back surface of the support base 10 so that the retractor 60 can sufficiently exert its function.

Particularly, it is important that the retractor 60 is attached to the back surface of the lower frame 11 which constitutes the support base 10. This is because the lower frame 11 is fixed directly to the floor surface, and is a portion / location that is not easily damaged by a collision, so that the retractor 60 itself can be sufficiently protected. If the retractor 60 is damaged at the same time as the collision, the seat belt 50 may not move freely, and the driver may remain stuck to the seat cushion 22 on the seat frame 20. In that case, a driver who was prevented from jumping out to the front may be unable to quickly escape in the future in the event of a vehicle fire, but if the retractor 60 is safe, such a situation may occur. It doesn't matter.

In order to solve the above-mentioned problems, the means adopted by the invention according to claim 3 is as follows.
Three-point seat belt 50
The guide 70 in which the portion close to the retractor 60 is devised rearward at the center of the rear surface of the upper frame 12 constituting the support base 10.
That is the guide.

That is, in the vehicle seat 100,
The shoulder belt of the seat belt 50 is the seat back 4
0 is guided by a shoulder anchor 53 provided on the left or right back surface of the seat 0 so as to be positioned diagonally forward of the upper half of the user's upper body, and the seat back 40 to which the shoulder anchor 53 is attached. For example, as shown in FIG. 3, the seatback 4 is reclined at various angles with respect to the seat frame 20.
The seat belt 50, which will be located on the back of 0, will be located at various angles. Of course, seat belt 50
The angle variation of (1) also occurs due to the front-back adjustment of the seat frame 20. On the other hand, since the retractor 60 has a fixed mounting position in any case, it may not be possible to stably store or pull out the seat belt 50 having various angles.

However, the vehicle seat 10 according to claim 3 of the present invention.
In the case of 0, the positions of the retractor 60 and the guide 70 are always constant by the configuration as described above, and the guide 70 allows the seat belt 50 to be stored in the retractor 60 as well as the retractor 60. Withdrawal is always done in a fixed state. As a result, the retractor 60 always operates stably, and its function is not impaired by the front-back adjustment of the seat frame 20 and the reclining of the seat back 40.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION
The vehicle seat 100 according to this embodiment will be described with reference to the vehicle seat 100 according to the embodiment shown in the drawings.
Includes all the inventions of the above claims, and therefore the vehicle seat 100 of this embodiment will be mainly described below.

FIGS. 1 and 2 show a front view and a side view of a vehicle seat 100 according to the present invention. In the vehicle seat 100 shown in these figures, the user or driver of the vehicle seat 100 is shown. Seat cushion 22 on which the person directly sits
Is mounted on the seat frame 20, and the seat frame 20 is mounted on the support base 10 fixed on the floor surface of the vehicle via the guide rail 30. A seat back 40 is supported so as to be reclining with respect to the seat frame 20.
A shoulder anchor 53 is fixed to the left rear surface (left rear when viewed from the driver when the driver sits down). And
The seat belt 50 for protecting the driver has one end fixed to the left side of the seat frame 20 and the other end freely retractable and retractable in the retractor 60 attached to the support base 10 side, and the right side of the seat cushion 22 ( The tongue 51 to be fixed to the fixture 52 arranged on the left side in the drawing (in FIG. 1) is arranged on the front side of the shoulder anchor 53 as shown in FIG. When the driver inserts the tongue 51 into the fixture 52 when seated, the shoulder anchor 53 rotates, so that the seat belt 50 fits the driver's body shape.

The support base 10 is a lower frame 1 fixed on the floor surface.
1 and a seat frame 2 via a guide rail 30 described later.
The upper frame 12 to which 0 is connected is assembled by a lift arm 13 so that its height can be adjusted. In the support base 10 of the present embodiment, the spring 14 is interposed between the upper frame 12 and the lift arm 13, so that the upper frame 12 is always moved upward. It is done by the driver's weight.
Of course, the position of the support base 10 after the height adjustment is, for example, the lower frame 1
The upper frame 1 is a regulating means such as a gas spring incorporated in the first frame.
It can be fixed by operating the height adjusting lever 16 provided on the second side, and can be moved up and down freely.

In particular, the upper frame 12 constituting the support base 10
Is formed in a rectangular frame shape as shown in FIGS. That is, it is the upper frame 12 that is formed into a rectangular shape by reinforcing two long-sided rods 12a, which are to be positioned in the front-rear direction of the vehicle, with a horizontal pipe material or the like. Has a structure capable of connecting the lift arms 13 and slidably guiding the ends of the lift arms 13. Then, a lower rail 32 of a guide rail 30, which will be described later, is fixed to the upper surface of each of the long side rods 12a.

Further, on the outer surface of each long side rod 12a, as shown in FIG.
Further, as shown in FIG. 4, a guide member 15 having a substantially rectangular prism shape is integrated. The length of the guide member 15 is such that it can cover the entire range in which the rear end of the upper rail 31 forming the guide rail 30 moves. That is, the seat frame 20 described later is slid on the upper frame 12 according to the physique and preference of the driver, and the guide member 15 extends over the entire sliding range. In other words, each of the guide members 15 has the upper frame 12 as shown in FIG.
It is sufficient to have a length of about 2/3 from the rear end to the front side.

On the other hand, the seat frame 20 supporting the seat cushion 22 on which the driver directly sits.
Has a general structure, and the seat back 4
0 to support reclining and seat belt 5
The fixture 52 of 0 is fixed. The seat frame 20 has an upper rail 31 that constitutes a guide rail 30 fixed to the lower surface thereof, and is formed to have sufficient strength to do so.

What is important in the seat frame 20 of the vehicle seat 100 according to the present invention is that, as shown in FIGS. 1 and 2, the emergency engaging members 21 are integrally formed on both lower rear sides thereof. is there. The emergency engaging member 21 has a substantially U-shaped front surface, as shown by a virtual line in FIG.
The guide member 15 on the 0 side is covered. That is, the emergency engaging member 21 is normally located outside of the guide member 15 on the upper frame 12 side without any relation to the emergency engaging member 21 and has no influence on the front-back adjustment of the seat frame 20. It has been done. However, once a collision accident occurs and the seat frame 20 tries to move away from the support base 10, one of the emergency engaging members 21 immediately engages with the guide member 15 and the seat frame 20 of the seat frame 20 moves. Further release from the support 10 is prevented.

The guide rail 30 includes a lower rail 32 fixed on each of the long side rods 12a of the upper frame 12 constituting the support base 10 and an upper rail 31 fixed on the lower surface of the seat frame 20. , For example, by using a ball bearing or the like, it is assembled by freely moving back and forth.
It is a commercially available functional component. In the guide rail 30, a claw (not shown) is engaged between the upper rail 31 and the lower rail 32 to stop the relative movement of the two, but the claw is operated. Is the front-rear adjustment lever 33 shown in FIG.

As described above, when the driver wants to adjust the position of the seat cushion 22 on which he / she is seated in the front / rear direction, he / she operates the above-mentioned front / rear adjustment lever 33, and also the seat. When it is desired to adjust the height of the cushion 22, the other height adjusting lever 16 may be operated. If the user wants to recline the seat back 40, he or she may operate the reclining operation lever 41 shown in FIG.

The seat back 40 that is reclinably connected to the seat frame 20 is also a general one that has been conventionally adopted, but in this embodiment, the shoulder anchor 53 can be attached from the upper side of the covering material. A pair of left and right mounting plates are built in the frame of the seat back 40. That is, in the seatback 40, the shoulder anchor 53 can be freely selected and attached to the upper left rear surface as shown in the drawing or the upper right rear surface as shown by the phantom line in FIG. Of.
The reclining operation of the seat back 40 is performed by using the reclining operation lever 41 shown in FIG.

Now, in this vehicle seat 100,
The seat belt 50 is built in to this. That is, one end of the seat belt 50 is fixed to the seat frame 20, and the middle thereof is guided by the shoulder anchor 53 attached to the seat back 40. As shown in FIG. 2, it can be housed in or retracted from the retractor 60 attached to the rear surface of the lower frame 11 constituting the support base 10. These seat belt 50 and retractor 60 are general ones, and so-called commercial products are adopted,
It can be used by the user with general knowledge.

What is important in the present invention is that the center of the rear surface of the lower frame 11 constituting the support base 10 is selected as the mounting position of the retractor 60 with respect to the vehicle seat 100. That is, in this vehicle seat 100, as shown in FIGS. 1 and 2, the support plate 61 is vertically erected and fixed to the center of the back surface of the lower frame 11, and the retractor 60 is attached to the support plate 61. Is installed. The mounting angle of the retractor 60 is such that the shoulder belt of the seat belt 50 can be hung from the upper left to the lower right or from the upper right to the lower left, that is, the shoulder anchor 53 is mounted on the upper left or upper right side of the seat back 40. The seat belt 5 for the retractor 60 in such a case
We have to change it because we have to make the 0 direction almost straight. Therefore, a plurality of angle adjusting holes 62 are formed in the support plate 61 to which the retractor 60 is attached, as shown in FIG. 6, and the angle adjusting hole 62 should be selected for mounting the retractor 60. Therefore, it can be performed at an optimum angle.

Further, the seat back 40 is to be largely reclined rearward, as shown by the phantom line in FIG. 5, and in this case, the shoulder anchor for the seat belt 50. 53 will also move greatly backwards. Moreover, the seat frame 20 to which the seat cushion 22 is attached is moved up and down and back and forth from the position indicated by the solid line in FIG. 2 to the position indicated by the phantom line in FIG. Fifty
The retracting direction of the retractor 60 greatly changes.
In the vehicle seat 100 of the present invention, a guide for the seat belt 50, for example, as shown in FIG. 5, is provided so that such a change in the direction of the seat belt 50 does not affect the operation of the retractor 60. 70 is provided.

Each of the guides 70 is located above the retractor 60 and does not change due to the front / rear adjustment of the seat cushion 22 or the reclining of the seat back 40.
In this embodiment, it is provided on the rear surface of the upper frame 12 of the support 10. Of course, the upper frame 12 is to be moved up and down, but since the upper frame 12 moves up and down with respect to the retracting / retracting direction of the seat belt 50, the upper frame 12 hardly changes. Guide 70 on the back of 12
There is no problem even if it is provided. Of course, these guides 70
May be integrally provided on the support plate 61 side for the retractor 60.

[0045]

As described above in detail, in the invention according to claim 1, as exemplified in the above embodiment, "for the support base 10 which is mounted on the floor surface of the vehicle and whose height is adjustable, A seat frame 20 that can be moved back and forth by being supported via a guide rail 30 in the front-rear direction, a seat back 40 that is recliningly supported with respect to the seat frame 20, and a shoulder portion provided on the seat back 40 side. The retractor 6 is partially guided by the anchor 53.
A vehicle seat having a three-point seat belt 50 that can freely move in and out of the upper frame 12, which constitutes the support base 10 and to which a lower rail 32 of a guide rail 30 is fixed.
A guide member 15 that also reinforces the upper frame 12 is integrated on at least one side surface of the upper frame 12, and the other end of the emergency engaging member 21 that covers the guide member 15 at one end is fixed to the seat frame 20 side. Is to provide a vehicle seat that can sufficiently withstand impacts in the event of a collision, etc., while not impairing the up / down and front / rear adjustment functions of the seat cushion required for the seat. Can be done.

In the invention according to claim 2, the retractor 60 of the vehicle seat 100 according to claim 1 is attached to the center of the rear surface of the lower frame 11 constituting the support base 10. With the above-mentioned characteristics, the same effect as that of the above-mentioned claim 1 can be exerted, and the direction of the shoulder belt can be freely changed freely according to the situation in the passenger compartment or the need of the user. It is possible. That is, according to the vehicle seat 100 according to the second aspect, it is possible to freely and freely change the direction of the shoulder belt according to the situation in the vehicle compartment or the user's need. Can be done.

Further, in the invention according to claim 3,
In the vehicle seat 100 according to claim 1 or 2, the portion of the three-point seat belt 50 close to the retractor 60 is guided by a guide 70 that is devised rearward in the center of the rear surface of the upper frame 12 forming the support base 10. There is a feature in the configuration in doing so.
Alternatively, the seat belt 50 can be guided into the retractor 60 while being able to exert the same effect as that of the second aspect of the invention, and being almost unaffected by the vertical or forward / backward adjustment of the seat cushion and the reclining of the backrest. The retractor 60 that can be used as a seat belt, and the seat belt 50 is frequently pulled out and stored.
It is possible to constantly exert the function of.

That is, according to the vehicle seat 100 of the third aspect, the seat belt 50 is hardly affected particularly by the vertical or forward / backward adjustment of the seat cushion 22 and the reclining of the seat back 40. Can be guided into the retractor 60, and moreover, the retractor 50 in which the seat belt 50 is frequently pulled out and stored,
It is possible to make the function always stable and stable.

[Brief description of drawings]

FIG. 1 is a front view of a vehicle seat according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view of an upper frame of a support base that constitutes a vehicle seat.

FIG. 4 is a view showing the same frame, (a) is an enlarged front view,
(B) is a plan view.

FIG. 5 is a side view showing another vehicle seat according to the present invention.

FIG. 6 is a view showing a seat belt built in a passenger seat, in which (a) is a front view and (b) is a side view.
FIG. 3C is an enlarged cross-sectional view of the shoulder anchor taken along the line 1-1 of FIG.

[Explanation of symbols]

 100 Vehicle Seat 10 Supporting Base 11 Lower Frame 12 Upper Frame 12a Long Side Rod 13 Lift Arm 14 Spring 15 Guide Member 16 Height Adjusting Lever 20 Seat Frame 21 Emergency Engagement Member 22 Seat Cushion 30 Guide Rail 31 Upper Rail 32 Lower Side Rail 40 Seat back 50 Seat belt 51 Tongue 52 Fixture 53 Shoulder anchor 60 Retractor 61 Support plate 62 Angle adjustment hole 70 Guide

Claims (3)

[Claims] 1. A seat frame, which is mounted on the floor of a vehicle and whose height can be adjusted freely, is supported by a guide rail in the front-rear direction so that the seat frame can be moved back and forth. A seat for a vehicle having a seat back supported so as to be capable of reclining, and a three-point seat belt that is partly guided by a shoulder anchor provided on the seat back side and can be freely moved in and out of a retractor, A guide member for reinforcing the upper frame is integrated with at least one side surface of an upper frame that constitutes a support base and to which the lower rail of the guide rail is fixed, and the guide member is covered at one end. A vehicle seat, wherein the other end of the emergency engaging member is fixed to the seat frame side. 2. The vehicle seat according to claim 1, wherein the retractor is attached to the center of the back surface of a lower frame which constitutes the support base. 3. A portion of the three-point seat belt adjacent to the retractor is guided by a guide devised rearward at the center of the rear surface of the upper frame constituting the support base. Or a vehicle seat as described in 2.