JPS5828134B2 - seat belt device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a seat belt device.

Various seatbelts have traditionally been used as a measure to protect occupants in vehicle emergencies such as collisions, but in recent years seatbelts have been developed to automatically shift occupants into restraint and non-restraint positions when doors are opened and closed. Moving passive seat belt devices are being developed.

In this type of device, generally, in order to move the seat belt to the restraint position and the non-restraint position for the occupant,
The anchor to which the seat belt is connected is configured to be moved by a drive device along a guide provided in the vehicle body in response to opening and closing of the door, but the seat belt moves to a restraining position for the occupant. Sometimes it is necessary for the anchor to be securely locked to the vehicle body so that the seat belt can restrain the occupant, and the anchor must be moved by a drive device from this position to a position where the seat belt is not restrained relative to the occupant. When the anchor is moved, the anchor must not be prevented from moving.

Furthermore, if the guides that movably hold the anchors are exposed inside the vehicle interior, not only will the aesthetics of the vehicle interior deteriorate, but there is also the risk that passengers may be injured by hitting their bodies against them. .

The present invention was devised in view of the above, and includes a slider that is moved by a drive device along a guide provided on a roof rail at the end of the roof side, and a seat belt that is connected to the slider so that the slider can be moved by a predetermined amount. an anchor that moves the seat belt to a restraint position for the occupant when the seat belt is attached to the vehicle and is located at the rear of the guide together with the slider and to a non-restraint position when the seat belt is located at the front; and a roof rail behind the guide. A locking member is provided on a frame fixed to the anchor, and the anchor has a locking portion that engages with the locking member when positioned at the rear of the guide to prevent only the slider from moving forward. The roof has an engaging portion that is moved forward by the driving device and moves the locking member to a non-engaging position with respect to the locking portion of the anchor by moving forward relative to the anchor. The gist of the present invention is a seat belt device characterized in that a side edge of a ceiling lining member disposed along the inner surface extends inward and downward into the vehicle interior with respect to the guide.

According to the present invention, when the anchor is located at the rear of the guide, the anchor is prevented from moving forward by the locking member unless the slider is moved forward by the drive device, so the occupant can be securely restrained by the seat belt, and the seat belt When the anchor is moved forward together with the slider by the drive device in order to move the locking member to the non-restricting position relative to the occupant, the locking member is moved by the slider to the non-engaging position relative to the anchor, so that the anchor is not restrained relative to the occupant. It cannot be prevented from moving.

Furthermore, since the side edges of the ceiling lining member extend inward and downward into the vehicle interior with respect to the guide, it is possible to prevent the guide from being directly exposed into the vehicle interior, thereby eliminating deterioration of the aesthetics of the vehicle interior. This has the effect of preventing problems such as the passenger hitting the guide with his/her body and being injured.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, a door 6 is pivotally supported at its front edge on a vehicle body 2 to which a seat 4 is attached. A guide 8 is provided, and a slide member 10 is slidably attached to the first guide 8.

A drive device 12 attached to the door 6 is activated by sensing the opening and closing of the door 6, and moves the slide member 10 above the guide 8 when the door 6 is opened, and moves the slide member 10 above the guide 8 when the door 6 is closed. One member 10 is moved below the guide 8.

A waist belt anchor 14 is attached to the lower part of the seat 4 on the center side of the vehicle body, and one end of the waist belt 16 is connected to the waist belt anchor 14, and the other end of the waist belt 16 is inserted through the slide member 10 and fixed to the door 6. It is wound around a waist belt retractor 18 equipped with an emergency locking mechanism.

The vehicle body 2 is attached to the roof rail on the roof side edge above the seat 4.
A second guide 20 extending in the front-rear direction is disposed, and a shoulder belt anchor 22 slidably attached to the second guide 20 is attached to the front of the guide 20 when the door 6 is opened by the drive device 12. When the door 6 is closed, the guide 20
be moved behind.

A shoulder belt 24 whose one end is connected to a shoulder belt anchor 22
is wound around a shoulder belt retractor 26 with an emergency locking mechanism fixed to the lower part of the seat 4 on the center side of the vehicle body.

According to the above configuration, when the door 6 is opened, the waist belt 16 is stretched between the sleel member 10 that has been moved above the first guide 8 by the drive device 12 and the waist belt anchor 14. At the same time, the shoulder belt 24 is stretched between the shoulder belt anchor 22 moved forward along the second guide 20 by the drive device 12 and the shoulder belt IJ tractor 26, and the shoulder belt 24 Since both are separated from the seat 4, the occupant can easily get on and off the vehicle.

Furthermore, when the door 6 is opened, a shoulder belt 24 and a waist belt 1 each have one end supported at a position on the center side of the vehicle body of the seat 4.
The waist belt 16 and the shoulder belt 24 are stretched between the front part of the roof rail and the front upper part of the door 6, respectively, and the waist belt 16 and the shoulder belt 24 approach each other, so that when the passenger gets into the vehicle, the waist belt 16
and the position of the shoulder belt 24 can be confirmed at a glance.

When the occupant sits on the seat r4 and closes the door 6, the waist belt 16 is tensioned between the sleel member 10, which has been moved by the drive device 4 below the first guide 8, and the waist belt anchor 14. At the same time, the shoulder belt 24 is connected to the drive device 1.
The shoulder belt anchor 22, which has been moved rearward along the second guide 20 due to The upper body of the person can be restrained.

Next, an example of the drive device 12 will be explained according to FIGS. 2 to 5.

A casing 32 having a cover 33 is fixed to a base plate 28 fixed to an inner panel 30 of the door 6.

A rack 34 is supported on the casing 32 so as to be movable laterally in FIG.
and 40 are pivotally connected, the gear 36 meshes with the rack 34, the gear 38 is fixed coaxially with the gear 36 and has a larger diameter than the gear 36, and the gear 40 meshing with the gear 38 is larger than the gear 38. It has a small diameter.

Furthermore, drive pulleys 42 and 44 having transverse grooves formed on the outer periphery are fixed coaxially with the gear 40.

Further, inner cables 50 and 52 are slidably inserted into outer cables 46 and 48 connected to the casing 32, respectively, and these inner cables 50 and 52 are inserted into the drive pulley 4 within the casing 32, respectively.
A thin wire is helically wrapped around the cable to engage 2 and 44.

The rack 34 is pivotally connected to the link 56 via a pin 54,
The link 56 is connected to the connecting rod 6 via a pin 58.
The connecting rod 60 is pivotally connected to a bracket 62 fixed to the vehicle body 2 via a pin 64 offset from a pivot shaft (not shown) of the door 6 relative to the vehicle body 2.

Further, a roller 66 is attached to the pin 54, and a roller 6 is attached to the pin 58.
8 are attached, and these rollers 66 and 68 are configured to come into contact with a cam surface formed on a cam plate 70 that is attached to the base plate 28 by screws or the like.

The cam plate 70 is formed with a first cam surface 72 that contacts the roller 66 and a second cam surface 74 that contacts the roller 68. When the rod 60 is pulled out from the door 6 by a predetermined amount, the roller 66 1, and when the rod 60 is pulled out further, the roller 68
slides on the arcuate portion of the second cam surface 74, causing the link 56 to rotate around the pin 54, and is configured such that the required amount of movement of the rack 34 can be secured by pulling out the rod 60 by a predetermined amount. ing.

Therefore, by opening the door 6, the rod 60 is pulled out and the rack 34 is moved to the left in FIG.
4 to move the cables 50 and 52.

Note that the drive device 12 is not limited to the one described above, and may be any device that operates in response to the opening and closing of the door 6, and various interlocking mechanisms such as mechanical, fluid pressure, or electric types may be used.
For example, the gear 36 may be linked to an electric morph connected to a switch that is activated by sensing the opening and closing of the door 6.

Next, an example of the first guide 8 disposed on the door 6 and the through member 10 slidably attached to the guide 8 will be described with reference to FIG. 6.

The guide 8 is an outer cable 4 connected to an interlocking mechanism 12.
The through member 10 has a slit along its longitudinal direction that extends from the front upper part of the door 6 to the rear lower part of the door 6 and opens toward the inside of the vehicle interior. 76, and the slide member 10 moves along the guide 8 as the inner cable 50 moves.

Note that the guides 8 are fixed in recesses 78 formed in the door inner panel 30, and the edges of the slits in the guides 8 are extended outward as shown in the figure to form trims attached to the surface of the door inner panel 30C/). It is configured to hold down 80.

Next, FIG.
This will be explained according to FIG.

Roof rail 84 arranged on the side of roof panel 82
has an outer panel 86 and an inner panel 88, and a guide 20 to which the anchor 22 is slidably attached is attached to the inner panel 88 by screws 89.

Further, a bracket 9 is attached to the inner panel 88 over almost the entire length of the guide 20 so as to maintain a predetermined distance from the inner panel.
0 is attached by screws 91.

The ceiling lining member 92 is secured to an appropriate number of protrusions 93 formed on the inner panel 88 by clips 94, and the side ends are secured to the brackets 90 by opening trims 95.
is supported by

Therefore, the guide 20 is located within the gap 99 formed by the roof rail 84 and the side end of the ceiling lining member 92, making it difficult to see the guide 20 from inside and outside the vehicle interior, thereby preventing deterioration of the exterior appearance. It is also possible to prevent the occupant from easily touching the guide 20 and getting injured.
Furthermore, when attaching the guide 20 and ceiling lining member 92 to the roof rail 84, first attach the guide 20 to the screw 84.
9 is attached to the inner panel 88, and the ceiling lining member 9 is attached to the inner panel 88.
2 to the protrusion 93 of the inner panel 88 with a clip 94, and the measuring end of the ceiling lining member is supported by the bracket 90 with the opening trim 95, and the guide 20 can be easily attached to the inner panel 88. In addition, the ceiling lining member 92 can be attached in substantially the same manner as in the past.

Note that 96 is an opening trim that covers the joint between the outer panel 86 and the inner panel 88, and 98 is a Unisa strip that comes into contact with the window glass 100, and is supported by a support member 102 that is attached to the outer panel 86 with screws 101. It is something.

The guide 20 has tubes 103 and 104 formed on both measuring parts, and rollers 106 and 108 rotatably attached to a support member 105 that supports the anchor 22 are inserted into the tubes 103 and 104, respectively. Slits are formed in the tubes 103 and 104 so that the support member 105 can be moved.

In addition, the support member 105 has a cable 5 moved by the drive device 12 and inserted into the tube 103.
2 are connected.

A locking device 110 is provided at the rear of the guide 20 to prevent forward movement of the anchor 22 when the anchor 22 is positioned at the rear of the guide 20. This locking device 110 is shown in FIGS. This will be explained according to FIG.

A lock pin 118 is fitted into a long hole 116 drilled in a frame 114 that is attached to the inner panel 88 of the roof rail 84 with a bolt 112 and forms a closed cross section. is always biased upward.

The anchor 22 is formed with teeth 122 that are prevented from moving only forward by the lock pin 118.

On the other hand, the slider 128 is fixed to the support member 105 by a pin 126, and this pin 126 is inserted through a long hole 130 bored in the anchor 22 to support the anchor 22 so that it can move by a predetermined amount. 128 and anchor 22
A spring 132 is tensioned between the pin 126 and the elongated hole 130 so that the pin 126 comes into contact with the front end of the elongated hole 130.

The slider 128 has lock pin 1 when moving forward.
Teeth 134 are formed to move 18 into a disengaged position relative to teeth 122 of anchor 22.

Note that guides 133 and 135 are attached to the frame 114 and guide the anchor 22 and the slider 128.

With the above configuration, when the door 6 is closed, the drive device 12 is activated, and the anchor 22 is moved back together with the slider 128 via the cable 52, resulting in the state shown in FIG. 9. At this time, the anchor 22 is moved back by the lock pin 118. will not be prevented.

When the shoulder belt 24 is pulled forward in the state shown in FIG. 9, only the anchor 22 attempts to move forward without moving the slider 128, but the tooth 122 is locked by the lock pin 118, 22 is prevented from moving forward.

Further, when the door 6 is opened and the first drive device 12 is activated, and the slider 128 is pulled forward via the cable 52,
The pin 126 comes into contact with the front end of the long hole 130 of the anchor 22, and the slider 128 and the anchor 22 move forward together, and at this time, the teeth 134 of the slider 128 engage the lock pin 118 with the teeth 122 of the anchor 22. If the anchor 22 is pressed down so that it does not align, forward movement of the anchor 22 is not prevented in any way.

Furthermore, in this embodiment, a pawl 138, which is normally held in the illustrated state by a spring 137, is fitted into an opening 136 formed in the frame 114 so that it can rotate by a predetermined angle. A bracket 142 that tiltably supports the pendulum 140 is fixed to the side surface of the pendulum 140 .

A lifting plate 144 that contacts the upper end of the pendulum 140 is pivotally attached to the bracket 142, and when the pendulum 140 is tilted, the lifting plate 144
When the pawl 138 is raised, the pawl 138 is rotated.

Further, the anchor 22 is formed with teeth 146 that prevent the pawl 138 from moving forward when the pawl 138 rotates.

With the above configuration, when the shoulder belt 24 is pulled forward and the anchor 22 attempts to move forward in a vehicle emergency such as a collision or abnormal inclination, the teeth 122 caused by the lock pin 118
In addition to the locking, the pendulum 140 tilts and rotates the pawl 138 via the lifting plate 144,
The pawl 138 locks the teeth 146.

Note that a lock pin 118 is used as a locking mechanism for the anchor 22.
In addition, the pawl 138 operated by the pendulum 140
The reason for this provision is that simply locking the teeth 122 of the anchor 22 with the lock pin 118 will cause the cable 52 to be pulled forward due to deformation of the vehicle body in the event of a collision, etc., and the slider 128
is accustomed to pushing down the lock pin 118 and releasing the locking of the tooth 122 by the lock pin 118;
In addition, by locking the teeth 136 with the pawl 138 in the event of a collision, the load applied to the anchor 22 via the shoulder belt 24 can be shared between the lock pin 118 and the pawl 138.

Therefore, the design is such that the cable 52 does not move the slider 128 forward even in the event of a collision, and the load on the anchor 22 is transferred to the lock pin 118.
If it is designed so that it can be supported sufficiently with only a chisel, Paul 13
8 and a pendulum 140 for operating the same power, it is possible to prevent the anchor 22 from moving forward in a vehicle emergency or the like.

Further, a plurality of teeth 122 and 146 formed on the anchor 22 and a plurality of teeth 134 formed on the slider 128 are provided, and thereby, for example, the interlocking mechanism 12
When the door 6 is closed, the outer cable 48 connected to the anchor 2 has stretched a little due to long-term use.
Even if the amount of retraction of anchor 22 is reduced, the ability of lock pin 118 and pawl 138 to prevent the anchor 22 from moving forward can be prevented from being impaired.

The shoulder belt 24 is connected to the anchor 22 by inserting the end into an opening 150 formed in the anchor 22, folding it back, and sewing the overlapping part. A spring play l-154 along the inside of the shoulder belt 24 is fixed, and the spring play 4154 is connected to the anchor 22 of the shoulder belt 24.
The shoulder belt 24 can be prevented from coming into contact with the occupant's neck by adjusting the protruding locus at the outer shape.

Furthermore, when the door 6 is opened and the anchor 22 is located in front of the guide 20, the spring plate 154 allows the shoulder belt 24 to be brought closer to the waist belt 16, so that when the occupant gets into the vehicle, the shoulder belt 24 and the waist belt 16 It becomes even easier to confirm the location of the object at a glance.

In addition, 156 is the anchor 22 and the spring plate 1.
This is a cover made of synthetic resin that covers 54.

Next, another example of the second guide 20 and the shoulder belt anchor 22 will be described with reference to FIGS. 13 and 14.

Note that portions that are substantially the same as those shown in FIGS. 7 to 12 will be described with the same reference numerals as above.

The roof rail 84 has an outer panel 158, an inner panel 160, and a coupling panel 162 formed in a concave shape that opens downward.
and weatherstrip 98 by screws 89 .

Further, the ceiling lining member 92 is secured to the inner panel 160 of the roof rail 84 by a clip 94, and its end portion is supported by the roof rail 84 by an opening trim 95.

Therefore, the guide 20 is located within the gap 164 formed by the roof rail 84 and the weather strip 98, making it difficult for the guide 20 to be seen from inside and outside the vehicle, without spoiling the exterior appearance, and allowing the occupant to follow the guide 20. This prevents injury from being easily touched, and furthermore, the guide 20 and the roof rail 8 of the ceiling lining member 92 can be easily touched.
4, first attach the guide 20 to the coupling panel 162 with the screws 89 from outside the vehicle interior, then attach the support member 102 to the outer panel 158 with the screws 101, and attach the weather strip 98 to the support member 102. , the guide 20 can be easily attached to the roof rail 84, and the ceiling lining member 92 can also be attached in the same manner as before.

Note that the configurations and functions of other parts are also substantially the same as those shown in FIGS. 7 to 9.

A locking device 166 is provided behind the second guide 20 to prevent the anchor 22 from moving forward when the anchor 22 is positioned at the rear of the second guide 20. will be explained according to FIGS. 14 to 16.

This locking device 166 differs from the locking device 110 shown in FIGS. 9 to 12 in that the pendulum 140
In addition to the lifting plate 144, a lifting arm 168 that interlocks the lifting plate 144 and the pawl 138 is provided on the bracket 142 that tiltably supports the frame 114. The structure and function of the other parts are substantially the same as those of the locking device 110 shown in FIGS. 9 to 12.

Therefore, this locking device 166 also locks the locking device 110.
Similarly, when the door 6 is closed, the drive device 12 is activated, and the anchor 22 is moved back together with the slider 128 via the cable 52, resulting in the state shown in FIG. never be stopped.

When the shoulder belt 24 is pulled forward in the state shown in FIG. 14, the slider 128 is not driven and the anchor 22
However, the tooth 122 is locked by the lock pin 118, preventing the anchor 22 from moving forward.

Further, when the door 6 is opened and the drive device 12 is activated, and the slider 128 is pulled forward via the cable 52, the pin 126 comes into contact with the front end of the elongated hole 130 of the anchor 22, and the slider 128 and the anchor 22 are separated. They move forward together, and at this time, the teeth 134 of the slider 128 engage the lock pin 1.
18 is pressed down so as not to engage with the teeth 122 of the anchor 22, and the forward movement of the anchor 22 is not blocked in any way.

Furthermore, in this locking device 166, when the shoulder belt 24 is pulled forward and the anchor 22 attempts to move forward in a vehicle emergency such as a collision or abnormal inclination, in addition to the locking of the teeth 122 by the locking pin 118, pendulum 1
40 is tilted to rotate the pawl 138 via the lifting plate 144 and the lifting arm 168, and the pawl 138 locks the tooth 146.

In the above embodiment, instead of the waist belt 16, as shown in FIG. 17, a knee protector 170 made of a cushioning material, which the knees of the occupant of the seat 4 come into contact with in the event of a vehicle collision, is appropriately provided in front of the seat 4. Of course, a system that does this would be fine.

Further, in the above embodiment, the locking device 110 is configured to lock the anchor 22 that slides on the guide 20 disposed on the roof rail, but the present invention is not limited to this, and the locking device 110 is configured to lock the anchor 22 that slides on the guide 20 disposed on the roof rail. It is configured to lock an anchor that slides a guide placed on the top of the floor tunnel section at the bottom of the center side of the vehicle, a guide placed on the side sill, or a guide placed in the center of the ceiling of a single room. Even passive seat belt systems can be easily applied.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view showing an example of a passive seat belt system, Fig. 2 is a front view of an example of the drive device 12 as seen from inside the vehicle, and Fig. 3 is the ■-curve in Fig. 2. 4 is a sectional view taken along the line IV-IV in FIG. 2, and FIG. 5 is a sectional view taken along the line v--■ in FIG. A cross-sectional view of the inner cable 50 in the direction of arrows, FIG. 6 is Vl in FIG.
7 is a cross-sectional view taken along the line ■-■ in FIG. 1; FIG. 8 is a cross-sectional view taken along the line ■-■ in FIG. 1; The figure is a view taken along the arrow ■ in Figure 7, looking at each part other than the vehicle body components such as the roof rail 84, ceiling lining member 92, and bracket 90.
11 is a cross-sectional view taken along line X-X in the figure; FIG. 11 is a view taken along arrow M in FIG.
The figure is a cross-sectional view of the locking device 110 taken along the line ■-■ in FIG. Figure 13 shows arrow XI
15 is a cross-sectional view taken along the line xv-xv in FIG. 14, and FIG. 16 is a sectional view in FIG. FIG. 17 is a cross-sectional view taken along the line XVI-XVI in the figure, looking at the locking device 166, and a perspective view showing another example of the passive seat belt system. 2: Vehicle body, 20 Ni guide, 22: Anchor, 114: Frame, 118 Ni lock pin, 128 Ni slider.

Claims (1)

[Claims] 1 A slider that is moved by a drive device along a guide provided on a roof rail at the roof side end, a seat belt is connected to the slider, and the slider is attached to the slider so as to be able to move by a predetermined amount, and the slider and the slider are moved along a guide provided on the roof rail at the roof side end. An anchor that moves the seat belt to a restraint position for the occupant when located at the rear and a non-restraint position when located at the front, and a locking member installed on a frame fixed to the roof rail behind the guide. The anchor has a locking portion that engages with the locking member to prevent only the forward movement when the anchor is positioned at the rear of the guide, and the slider is moved forward by the drive device and relative to the anchor. a ceiling lining member disposed along the inner surface of the roof, the locking member having a retaining portion that moves the locking member to a disengaged position with respect to the engaging portion of the anchor by moving forward relative to the anchor; A seatbelt device characterized in that a side edge of the guide extends inward and downward into the vehicle interior with respect to the guide.