JPH01247248A - Seat belt device - Google Patents

Abstract

PURPOSE:To improve wearability by providing a detecting switch detecting housing condition, holding a reach member at a extended position usually and moving the reach member to a housing position when it is detected by the detecting switch that it is necessary to house the reach member. CONSTITUTION:On a two door type automobile, in a case of getting out of a car from a rear seat, a seated person on a front seat 10 gets out once for laying down a seat back 11 to the position shown by imaginary lines. According to detection thereof on a detecting switch SW1, a motor M of an operation mechanism 40 is started for being turned backward a reach member 36 with a push-pull cable 37 and moved a guide member 36b to a housing position to stop. A webbing 31 is entered into a rear pillar 24 and gets to a condition along the rear pillar 24 on a side face of a cabin without crossing a boarding gate 21. Therefore, a riding person in the rear seat can be get out without having interference of the webbing 31 or the reach member 36. Next, when the seat back 11 is raised, the motor M is restarted and the reach member 36 is turned forward, the guide member 36b is moved to the extended position and stop.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention is directed to a two-door type automobile in which a webbing relay anchor is provided at a position flm 1 l Jf away from the backrest at the upper side of the passenger compartment, and the webbing is wrapped around the webbing. Webbing extends from the retractor through the relay anchor,
The present invention relates to a seat belt device that improves the ease of wearing the seat belt by pulling the sea urchin pink shoulder portion forward.

"Prior Art" In recent years, it has become common for automobiles to be equipped with three-point seat belt devices for the driver's seat and passenger seat. Therefore, it is common to provide a relay anchor in the upper part of the passenger compartment at a distance from the backrest, and to attach the webbing to the seated person by pulling the shoulder part of the webbing forward from the relay anchor.

However, with this arrangement, when putting on the seat belt, the seated person has to twist his/her body to pull the shoulder part at the rear, forcing him or her into an unreasonable posture, making it extremely difficult to put on the seat belt. Hard-top cars have large entrances and exits that tend to be located on the shoulder or at the rear, making installation even worse.

Therefore, as a technology to solve this problem,
There is one disclosed in Japanese Patent No. 192639.

In other words, the publication states that the end of the webbing is held by a rotating member that rises and falls as the door opens and closes, and that when the door is closed, the rotating member stands up, and when the door is opened, the rotating member moves along the floor. The technology that prevents the vehicle from falling over and obstructing the passenger entrance is demonstrated.

``Problem to be solved by the invention'' However, with such conventional seat belt devices, the installation itself is large and complicated, and the rotating member falls along the floor, making it difficult to install at the entrance/exit. Although it is spacious, it protrudes onto the floor of the entrance and exit, which not only poses a risk of tripping, but also has the problem that dirt from footwear sticks to the webbing, making it unclean.

The present invention was made by focusing on such conventional problems, and it does not obstruct the access to the rear seats at all.
An object of the present invention is to provide a seat belt device which eliminates contamination of the webbing and improves wearability.

``Means for Solving the Problems'' The gist of the present invention for achieving the above object is to provide a retractor for retracting the webbing, in which a relay anchor for the webbing is provided at a position spaced apart from the backrest at the upper side of the passenger compartment. A webbing extends from the webbing into the vehicle interior through the relay anchor, and in a seat belt device that pulls the shoulder portion of the webbing forward, the webbing is engaged with the shoulder portion of the webbing on the side of the seated person, and the webbing is pulled forward. A reach member is disposed on the vehicle body and is movable between a storage position near the storage position and a delivery position in front of the storage position.

A detection switch is provided to detect storage conditions, and an actuation mechanism is provided that normally holds the reach member at the extended position and moves the reach member to the storage position when the detection switch detects that storage of the reach member is necessary. A seat belt device is provided.

"Function" The seat belt extends from a relay anchor at a distance n from the backrest at the upper side of the vehicle compartment, and wraps around the seated person to be worn.

The reach member is normally stopped at the extended position so that the webbing can be appropriately wrapped around the seated person.

When exiting the vehicle, the reach member is in the extended position when the driver is seated again in the seat in front of him with the seat belt device installed.

When the occupant in the front seat exits the vehicle and the stowage conditions are satisfied, such as by folding down the backrest of the front seat to allow the passenger in the rear seat to exit the vehicle, the detection switch detects this and the actuating mechanism activates the reach member. Retract to storage position.

As a result, the reach member and webbing run along the side of the passenger compartment without getting over the entrance and exit door, allowing passengers in the rear seats to easily exit the vehicle.Even in the case of 0-occupancy, if the stowage conditions are met, the same can be done. The reach member is in the stowed position and can be easily accessed.

If the stowage condition is violated, such as by sitting in the front seat and raising the backrest, the reach member moves forward and stops at the extended position, and the seated person can easily put their hand on the shoulder part and pull the webbing. It can be worn by wrapping it around the body.

"Example" Hereinafter, various embodiments of the present invention will be described based on the drawings.

1 to 8 show a first embodiment of the present invention.

As shown in FIG. 1, a front seat 10 is arranged in the cabin of a two-door type automobile, and a passenger entrance 21 is provided on the side of the vehicle body 20 facing the front seat 10.

A seat belt device 30 for a person seated in the front seat 1O.
is provided.

The webbing 31 of the seat belt device 30 is attached to the front seat lO.
The position is located away from the backrest 11 of the vehicle, and is located on the side wall 2 of the passenger compartment.
A relay anchor 32 is provided on the upper side of the relay anchor 3.
The webbing 31 is drawn into the inside of the rear villa 24 of the vehicle body 20 through the intake port 23 opened at position 2, and the base end of the webbing 31 is provided at the lower end of the rear villa 24 or wound around the tractor 33.

The relay anchor 32 has a guide hole 3 through which the webbing 31 is inserted.
2a, and the webbing 31 extends into the vehicle interior through the guide port 32a and is fixed to the floor.
The shoulder portion 31a of the webbing 31 provided with the tongue plate 34 is pulled forward, and the tank plate 34 is fitted into a buckle 35 provided on the opposite side so that the seated person can wear it.

A reach member 36 that hangs downward and can swing back and forth is pivotally supported by a pivot 36a on the vehicle body 20 at an intermediate position from the relay anchor 32 toward the backrest ll side.

The shoulder portion 31a of the webbing 31 is inserted into the tip of the reach member 36, and as the reach member 36 swings, it is easy to reach the storage position near the relay anchor 32 and the webbing 31 on the side of the first seated person. A guide portion 36b is pivotally attached to the guide portion 36b, which is movable between the guide portion 36b and the extended position.

An actuated end 36c is protruding from the base of the reach member 36,
The operated end 36c is connected to the actuation mechanism 40 by a push-pull cable 37.

The actuation mechanism 40 swings the reach member 36 rearward at least when the backrest 11 of the front seat 10 is folded down to move the reach member 36 toward the guide portion 36b.
1 and 2 to the storage position.
As shown in the figure, a driving disk 42 which is rotated in only one direction by a motor M is attached to a base plate 41, and an operating lever 43 which swings from the driving disk 42 is pivotally supported by a pivot shaft 43a.

A retaining pin 42a is protruded from the surface of the drive disk 42, and an elongated hole 43b into which the engagement pin 42a is slidably engaged is bored in the operation lever 43, so that the drive disk 42 can be moved in one direction. When the locking pin 42a rotates, the operating lever 43 swings due to its engagement with the elongated hole 43b.

The operated end 36 of the reach member 36 is attached to the end of the operating lever 43.
The end of the push-pull cable 37 extending from c is connected, and the outer periphery of the drive disk 42 forms a cam surface 42b for detection, and facing the cam surface 42b, a limit switch LSI,
LS2 is provided.

The control unit 45 of the seat belt device 39 is connected to the motor M of the actuating mechanism 40, and the limit switches LSI and LS
2. Detection switch SWI and power line 3 for detecting forward tilting of the backrest 11 of the front seat 1O as a storage condition for the reach member 36
8 is connected to the control section 45.

FIG. 3 shows the electric circuit of the control unit 45, in which, in addition to the above-mentioned switches, there is a relay RA for operation control connected to the detection switch SWI of the backrest 11 of the front seat IO, and a relay for human power to the motor M. It is equipped with a relay RB.

Limit switches LSI and LS2 are both on contact a
, has a switching contact.

As can be seen in FIGS. 4 and 5, due to the positional relationship with the cam surface 42b, the limit switch LSI is turned on during approximately half a rotation of the drive disk 42 corresponding to the extending operation of the reach member 36, If so, the switching contact is on the side.

The limit switch LS2 is on the ON contact a side only when the reach member 36 is near the storage position, and is on the switching contact side in other cases. This switching contact is open.

The operation control relay RA has a normally open contact ral, and the power manual relay RB has a switching contact part rbl.

Next, the effect will be explained.

The seat belt is worn by a webbing 31 extending from a relay anchor 32 at a position spaced apart from the backrest 11 at the upper side of the vehicle interior and wrapped around the seated person.

As shown by the solid line in FIG. 1, when the backrest 11 of the front seat 10 is up, the reach member 36 is swinging forward and the guide portion 36b is in the extended position.

Since the guide part 36b has the shoulder part 31a of the webbing 31, the seated person can easily put their hands on this shoulder part 31a and pull the webbing 31, and the sea urchin pink 3
1 around your body, and attach the tank plate 34 to the buckle 35.
If you insert it into the seat belt, you will be able to put on your seat belt.

In a two-door type automobile, when exiting the vehicle from the rear seat, the person seated in the front seat 10 first exits the vehicle and then reclines the backrest 11 as shown in the imaginary line in FIG.

Since the detection switch SWI detects this, the actuation mechanism 4
0 motor M starts and the drive disk 42 rotates, and due to the rotational movement of the retaining pin 42a, the operating lever 43 that is engaged with the engagement pin 42a via the elongated hole 43b swings and is pushed. The pull cable 37 pushes the operated end 36c of the reach member 36, the reach member 36 swings backward, and the guide portion 36b moves to the storage position and stops.

The sea urchin pink 31 enters the rear villa 24 from the entrance 23, gets caught up in the retractor 33 at the lower end of the rear villa 24, and is pulled into the rear villa 2 on the side of the passenger compartment without getting caught in the entrance/exit door 21.
It will be in a state similar to 4.

A passenger in the rear seat can easily get out of the vehicle without the webbing 31 or the reach member 36 getting in the way.

When the backrest 11 is raised to sit in the rear seat, the motor M restarts, the drive disk 42 rotates, the push-pull cable 37 pulls the operated end 36c of the reach member 36, and the reach member 36 moves forward. Rocking.

The guide portion 36b moves to the extending position and stops.

What controls the above operation is a control section 45 having an electric circuit shown in FIG. 3, which will be explained below with reference to FIGS. 6 to 8.

When the backrest 11 of the front seat 10 is folded down in order to get on or off the rear seat, a detection switch SWI that detects the upright/folding of the backrest 11 is turned on, and the storage operation of the reach member 36 is started.

When the detection switch SWI is turned on, the relay RA for operation control and the relay RB for human power are energized through the switching contact of the limit switch LSI and the on contact a of LS2, and the motor M is started.

In FIG. 6, the storage operation progresses from the storage operation start position, and in FIG. 7, the conditions of step 1.2 are achieved, and in step 3, the operation control relay RA and the power relay RB are energized, Step 4: Start motor M.

Further, in step 5, the state of the limit switch LS2 corresponding to the cam surface 42b caused by the rotating drive disk 42 is monitored.

When the limit switch LS2, which was on the ON contact a side, switches to the switching contact side, the relay RA for operation control and the relay RB for manual power in step 6 are no longer energized.
In step 7, motor M is stopped. In Figure 6, it is in the storage position. The limit switch LSI becomes the ON contact a side.

After getting in and out of the rear seat, when the backrest 11 of the front seat 10 is raised, the detection switch SWI is turned on, and step 8 in FIG.
When condition 9 is achieved, relay RA for operation control and relay RB for power manual operation are energized and energized, and the normally open contact r
al and switching contact rbl are turned on, and the motor M is energized through them.

In FIG. 6, the extending operation of the reach member 36 is started from the extending start position, and in FIG. 8, the process proceeds to steps IO to 11.
When the motor M is started, in step 12, the state of the limit switch LSI corresponding to the cam surface 42b caused by the rotating drive disk 42 is monitored.

When the limit switch LSI switches from on contact a to switching contact
, the power supply relay RB is no longer energized, and the motor M is stopped in step 14. In Figure 6, reach member 3
6 is the delivery position.

As described above, the guide portion 36b of the reach member 36 moves to the extending position while holding the shoulder portion 31a of the webbing 31, and the person seated in the front seat can easily put their hand on this shoulder portion 31a and pull the webbing 31. It can be installed with

FIG. 9 shows a second embodiment. In contrast to the first embodiment in which the reach member swings, a reach member that slides is provided. The basic configuration is the same as that of the first embodiment, so similar parts are denoted by the same reference numerals and redundant explanation will be omitted.

In this embodiment, a guide rail 25 is fixed to the roof rail portion of the vehicle body 20 from the vicinity of the relay anchor 32 to the side of the person seated in the front seat 10, and a reach is slidably fitted to the guide rail 25. A member 39 is provided. Reach member 3
A guide portion 39a through which the shoulder portion 31a of the webbing 31 is inserted is provided at the tip of the webbing 31.

The reach member 39 is connected to an actuation mechanism 40a via a push-pull cable 37, and is provided with a control section 45 for controlling the actuation mechanism 40a. The detection switch SWI is connected to the control unit 45 as in the first embodiment.

In the second embodiment as well, when the backrest 11 of the front seat 10 is upright, the reach member 39 is stopped at the extended position of the front end of the guide rail 25, and the webbing 31 is easily attached. When the backrest 11 is folded down, the reach member 39 moves rearward to the storage position, ensuring ease of getting in and out of the rear seat.

FIG. 10 shows a third embodiment, and the basic configuration is the same as that of the first embodiment, so similar parts are denoted by the same reference numerals and redundant explanation will be omitted.

In this embodiment, a door switch SW2 is used as a means for detecting the storage condition of the relay anchor 32.

The relay anchor 32 is always in the extended position when the door is closed, and retreats to the storage position when the door is opened.

In the third embodiment as well, when the door is closed, no one gets on or off the door, so even if the reach part side 36 is in the extending position, it will not get in the way, and when the door is opened, the relay anchor 32 will move back to the storage position. Therefore, the sea urchin pink 31 and the reach member 36 do not get in the way, and ease of wearing the seatbelt and ease of getting in and out of the rear seat are ensured.

"Effects of the Invention" According to the seat belt device according to the present invention, a webbing relay anchor is provided at a position spaced apart from the backrest at the upper side of the passenger compartment in a two-door type automobile, and the seat belt In cases where it is difficult to attach the webbing, the reach member always extends the shoulder part of the webbing to a position where it is easy to reach, and when it gets in the way when getting into or out of the rear seat, it retreats to the stowed position. The belt becomes easier to put on, which is expected to improve the wearing rate, and it also makes it easier to get in and out of the rear seats.

Since it operates in the upper part of the vehicle compartment, dirt is not an issue at all, and its small size and simple structure require minimal cost and space.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the present invention, in which FIG. 1 is a conceptual front view of a seat belt device, FIG. 2 is a front view showing an enlarged main part of the operating mechanism, FIG. 3 is an electric circuit diagram of the control unit, FIG. 4 is an explanatory diagram showing the relationship between the seat and the electric circuit, FIG. 5 is an explanatory diagram showing the operating state of the limit switch, and FIG. 6 is an operation timing diagram. FIG. 7 is a flowchart of the storage operation, FIG. 8 is a flowchart of the delivery operation, FIG. 9 is a conceptual front view of the seatbelt device according to the second embodiment, and FIG. 1O is a diagram of the seatbelt device according to the third embodiment. It is a conceptual front view. 10...Front seat 11...Backrest 20.
...Vehicle body 21...Gateway 22...Side wall 24...Rear villa 30...Seat belt device 31...Uni pink 31a...Shoulder part 32...Relay anchor 33...Retractor 34. ... Tongue plate 35 ... Buckle 36 ... Reach member 36b ... Guide section 37 ... Push-pull cable 40 ... Actuation mechanism 45 ... Control section M ...
・Motor LSI, LS2...Limit switch SWI...(
Storage conditions) Detection switch RA...Relay for operation control RB...Relay for power manual power Fig. 2 Fig. 3vA Fig. 4 Fig. 5 (a) (b
) Figure 6 Figure 8 Figure 7

Claims (1)

[Scope of Claims] A webbing relay anchor is provided at a position spaced apart from the backrest at the upper side of the vehicle interior, and the webbing extends into the vehicle interior from a retractor that retracts the webbing via the relay anchor, and the webbing shoulder In a seat belt device that is designed to pull the webbing forward, the seat belt device engages with the shoulder portion of the webbing on the side of the seated person, and is inserted between a storage position near the relay anchor and an extended position in front of the storage position. A movable reach member is disposed on the vehicle body, a detection switch is provided to detect storage conditions, and the reach member is normally held at the extended position, and when the detection switch detects that the reach member needs to be stored, A seat belt device comprising an actuation mechanism for moving the reach member to a storage position.