JPH0741641Y2 - Seat with seat belt - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a seat with a seat belt suitable for application to, for example, a front seat of an automobile.
A retractor for retracting the seat belt is attached to a part of the seat, and one side of the seat cushion is attached to the seat belt that is pulled out to the front of the seat through the belt guide from the belt outlet of the belt box on the upper end side of the seat back. The present invention relates to an improvement in a seat with a seat belt, in which a tongue that is selectively locked to a buckle provided in the seat portion is inserted, and a tip of the seat belt is connected to a belt attachment portion provided on the other side portion of the seat cushion.

[Conventional technology]

It has been a common practice to attach a seat belt to a seat of a vehicle or the like to restrain and protect an occupant in the event of a collision of the vehicle or the like. As a seat belt device of this type, conventionally, an anchor is fixed to a pillar, a floor or the like of a vehicle, and a seat belt end portion is connected to the anchor.
For this reason, a complicated mechanism must be attached when adjusting the forward / backward slide movement of the vehicle and the forward / backward tilt adjustment by the reclining device, which causes an increase in cost, and depending on the physique and preference of the occupant. The driving posture cannot be easily changed, the angle and position of the seat belt with respect to the occupant change, and the occupant cannot be restrained and protected in an optimal state.

Further, in recent years, in order to solve such a problem, a so-called built-in type seat belt device, in which a seat belt is incorporated into a seat, is disclosed in, for example, JP-A-60-92945 and JP-B-55-30756. It has been proposed in the past, such as in Japanese Utility Model Publication No. 53-109233. As shown in FIGS. 5 and 6, this type of seatbelt device includes a seat cushion 2 or a seatback 3 that constitutes a vehicle seat 1.
An emergency automatic lock type retractor 5 as a seat belt 6 winding device is housed and disposed in a part of
The seat belt 6, which has one end 6a fixed to the retractor 5 and is wound up, is provided in front of the seat back 3 from a belt withdrawing port 8a of a belt guide 8 provided on one side of the headrest 4 at the upper end side of the seat back 3. And the other end (tip) 6b of the seat belt 6 is fixed to one side of the seat cushion 2, and the tongue 9 inserted into the seat belt 6 is inserted into a buckle 10 provided on the other side of the seat cushion 2. As shown by an imaginary line in FIG. 5, the shoulder belt 6A and the waist belt 6B can be formed by engaging with each other.

[Problems to be solved by the device]

However, in the above-described conventional seatbelt device, the seatback 3 needs to have a certain degree of rigidity in order to hold the seatbelt 6 so that the seatbelt 6 can be pulled out. In addition, since the seat belt 6 always hangs down in a state of being in close contact with the seating surface of the seat back 3, there is also a problem such as poor operability and wearability of the seat belt 6 when worn. It is desired to solve such problems.

In particular, in the above-described conventional device, it is general that the seat belt 6 is configured so as to be closely attached to the seated person for the purpose of protecting the seated person, and in this case, the seated person is careless. The belt 6 moves due to movement and vibration.
When a pulling force is applied to the belt, the retractor 5 for automatically applying a locking force in an emergency works, the belt 6 is locked, and a occupant feels pressure, which is a problem in terms of wearing. Therefore, it is desired to take some measures so that the locked state does not occur with respect to a small movement that does not cause any problems in practical use.

The present invention has been made in view of the above circumstances, and it is possible to improve the seatbelt wearability and also consider the operability when wearing the seatbelt, so that the seatbelt functions as a seatbelt. The purpose is to get the attached sheet.

[Means for Solving the Problems]

In order to meet such a demand, the seat with a seat belt according to the present invention is capable of vertically moving a belt guide having a belt insertion port portion opposed to a portion of the upper end side of the seat back which is close to the belt withdrawal port of the belt box. And a long groove extending in the vertical direction is formed at the downwardly extending end of the belt guide, and the lower lateral rod of the seat back frame is inserted into the long groove so that the buckle can be rotated back and forth on the seat cushion frame. Mounted on the buckle, the front end of a swing lever that can swing in conjunction with the forward / backward movement of the buckle is pivotally supported on a support shaft provided on the buckle side, and the other end of the swing lever is located below the seat back frame. Attach to one end of a support shaft parallel to the rod, attach the other end of the support shaft to the belt guide, and attach the belt guide to the seat belt side tongue. Capable is moved up and down by the presence of the belt attachment to the assembly is a buckle, and characterized by being configured to increase or decrease the frictional force to the seat belt in the belt insertion opening portion of the belt guide.

[Action]

According to the present invention, the belt insertion opening portion of the belt guide is normally opposed to the seat belt withdrawal opening on the upper end side of the seat back to minimize the frictional force on the seat belt by the belt guide and to pull out the belt with a small force. The seat belt tongue is swung backward by the action force of the belt when the seat belt tongue is attached to the buckle. By moving the belt guide downward by the lever and the supporting shaft swinging downward, the belt guide is displaced from the belt insertion opening and the belt outlet.
The frictional force on the seat belt is increased, and the locked state on the retractor for winding does not work due to some movement or vibration of the seated person, reducing the feeling of pressure for the seated person and improving wearability. It is a thing.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

1 to 4 show an embodiment of a seat with a seat belt according to the present invention. In these drawings,
The same or corresponding parts as those in FIGS. 5 and 6 described above are designated by the same reference numerals, and the description thereof will be omitted.

Now, according to the present invention, in the vehicle seat 1 with the seat belt described above, as is apparent from FIGS. 1 and 2, the buckle 10 on one side of the seat cushion 2 is provided with the tongue 9 therebetween. A belt guide 8 having a belt insertion opening 8a is moved up and down in a portion of the belt box 20 having the retractor 5 and the like provided on the upper end side of the seat belt 6 of the seat belt 6 which is selectively locked, in the vicinity of the belt withdrawal opening 20a. The belt guide 8 is arranged so that it can be moved up and down depending on whether or not the seat belt 6 is attached to the buckle 10 on which the tongue 9 on the seat belt 6 side is detachably assembled, and the belt guide 8 is passed through the belt guide 8. It is characterized in that it is configured to increase or decrease the frictional force on the belt 6 at the mouth 8a.

If this is described in detail, the belt guide 8 is shown in FIGS.
As shown in the figure, a vertically extending long groove 8c is formed at the downwardly extending end 8b, and the seat back frame 3a is formed.
(Or a lateral rod portion attached to the frame 3a) is inserted into the long groove 8c, and the belt guide 8 is connected in a vertically movable state.

The buckle 10 is attached to the seat cushion frame 2a so as to be rotatable back and forth, and a front end of a swing lever 22 capable of swinging in conjunction with the back and forth movement of the buckle 10 is pivoted on a support shaft 23 provided on the buckle 10 side. The other end of the swing lever 22 is supported and is attached to one end of a support shaft 21 parallel to the lower lateral rod of the seat back frame 3a or the like.

The other end of the support shaft 21 is attached to the extending end 8b of the belt guide 8. The belt guide 8 is moved up and down depending on whether or not the buckle 10 to which the seat belt 6 side tongue 9 is detachably mounted is attached, and the belt guide 8 is rubbed against the seat belt 6 at the belt insertion opening 8a. It is configured to increase or decrease the force.

In addition, the swing lever 22 is used for the seat back frame 3a.
By engaging with the circular groove 22a, the forward / backward movement is converted into vertical movement and the swing amount is limited.

And in such a configuration, the buckle 10
When the belt 6 is not attached, it is moved in the direction of arrow A in FIG. 1 by an urging means or the like not shown, so that the swing lever 22 and the belt guide 8 are also moved in the direction of arrow A in the figure. At times, as shown in FIG. 3, the frictional force on the seat belt 6 by the belt insertion opening 8a of the belt guide 8 is minimized to allow the belt 6 to be pulled out easily with a small force. The operability can be secured.

Further, when the tongue 9 on the side of the seat belt 6 is attached to the buckle 10, the action of the belt 6 on the buckle 10 acting in the direction of the arrow B in the figure causes the swing lever 22 and the belt guide 8 to be illustrated. Each of them is moved in the direction of the middle arrow B, and as a result, as shown in FIG. 4, the belt insertion opening 8a of the belt guide 8 is moved downward as compared with the withdrawal opening 20a on the side of the box 20 to cause a positional shift, and thereby the seat belt 6 is moved. Can increase the frictional force of.

In this state, the locking action on the retractor 5 side for winding does not work due to some movement or vibration of the seated person, and by relaxing the reaction, the feeling of pressure for the seated person is reduced, and It is possible to improve the property.

The present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part can be freely modified and changed as needed, and the seat belt 6 and the retractor 5 for winding the seat belt 6 can be changed. As a belt guide 8 that characterizes the present invention
Needless to say, various modifications can be considered as the belt box 20 having the retractor 5 and the like. Of course,
It is not always necessary to provide the retractor 5 in the box 20 described above. Further, various modifications may be considered as a mechanism for transmitting the movement of the buckle 10 to the belt guide 8.

Further, the present invention is not limited to the vehicle seat as described above, and can be applied to any seat that requires a configuration similar to this to exert the effect.

[Effect of device]

As described above, according to the seat with the seat belt according to the present invention, the belt guide with the belt insertion opening portion facing the belt extraction opening of the belt box on the upper end side of the seat back can be moved up and down. A long groove extending in the vertical direction is formed at the downwardly extending end of the belt guide, and a lower lateral rod of the seat back frame is inserted into the long groove so that the buckle can be rotated back and forth on the seat cushion frame. The front end of a swing lever that is mounted and swingable in conjunction with the back-and-forth movement of the buckle is pivotally supported on a support shaft provided on the buckle side, and the other end of the swing lever is a lower lateral rod of the seat back frame. Attached to one end of a support shaft parallel to the other end of the support shaft, the other end of the support shaft is attached to the belt guide, and the tongue on the seat belt side can be attached to and detached from the belt guide. Since it is configured to move up and down depending on the presence or absence of a belt attached to the buckle to be assembled to the seat belt, the frictional force to the seat belt at the belt insertion opening portion of the belt guide is increased or decreased. Minimizes the frictional force on the seat belt by the belt guide, and makes it easy to pull out the belt with a small amount of force, ensuring operability at the time of wearing and assembling the tongue on the seat belt side to the buckle. When attached, increase the frictional force to the seat belt by the belt guide that is moved by the acting force of the belt on the buckle,
The locked state on the retractor side for winding does not work due to some movement or vibration of the seated person, reducing the feeling of pressure for the seated person and improving wearability, and exerting the function as a seat belt There are various practically excellent effects that can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an essential configuration showing an embodiment of a seat with a seat belt according to the present invention, FIG. 2 is a schematic perspective view showing a configuration of a seat frame thereof, and FIGS. 3 and 4 show its operation. 5 and 6 are schematic perspective views and schematic side views for explaining a conventional example, respectively. In the figure, 1 …… Vehicle seat with seat belt, 2 ……
Seat cushion, 3 ... Seat back, 5 ... Seat belt retractor, 6 ... Seat belt, 6b ...
… Seat belt tip (other end), 8 …… Belt guide, 8a
...... Belt insertion opening (belt outlet), 9 ... tongue,
10 …… buckle, 20 …… belt box, 20a …… belt outlet, 21 …… support shaft, 22 …… swing lever,
23 ... A spindle.

Claims (1)

[Scope of utility model registration request] 1. A seatbelt having a retractor for retracting a seatbelt attached to a part of the seat, and a seatbelt which is pulled out to the front of the seat through a belt guide from a belt withdrawal opening of a belt box on the upper end side of the seatback. A seat belt in which a tongue that is selectively locked to a buckle provided on one side of the seat cushion is inserted, and the tip of the seat belt is connected to a belt attachment portion provided on the other side of the seat cushion. In the attached seat, a belt guide having a belt insertion opening portion opposed thereto is disposed in a portion of the upper end side of the seat back close to the belt withdrawal opening so as to be vertically movable, and the belt guide is extended downward. A long groove extending vertically is formed at the installation end,
The lower lateral rod of the seat back frame is inserted into the long groove, the buckle is attached to the seat cushion frame so as to be rotatable forward and backward, and the front end of a swing lever that can swing in conjunction with the forward and backward movement of the buckle is located on the buckle side. The other end of the swing lever is attached to one end of a support shaft parallel to the lower lateral rod of the seatback frame, and the other end of the support shaft is attached to the belt guide. The belt guide is moved up and down depending on the presence or absence of a belt attached to a buckle to which the seat belt tongue is detachably assembled, to increase or decrease the frictional force to the seat belt at the belt insertion opening of the belt guide. A seat with a seat belt characterized by being configured.