JP2575704B2 - Seat belt shoulder position adjusting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement in a shoulder position adjusting device for a vehicle seat belt.

(Prior Art) For example, in a three-point seat belt used for a front seat of a vehicle, if the position of a through anchor, which is a support point of a shoulder portion, is fixed, when the occupant's sitting height is high, the position is lower than the shoulder. The shoulder that the belt hits comes off,
When the sitting height is low, the belt is hung on the neck.
Therefore, there is a device for adjusting the position of the through anchor in accordance with the sitting height of the occupant.

FIGS. 7 to 9 show an example of a conventional shoulder position adjusting device.
Shown in the figure.

As shown in FIG. 7, the adjust base 201 has a plurality of latch holes 203, and is fixed to the center pillar 302 of the vehicle body so that the longitudinal direction is the vertical direction. Fixing bolt 2
Performed at 05. The adjustment anchor 207 has an operation knob 209 and a nut 211, and slides on the adjustment base 201. As shown in FIGS. 7 and 8, the pillar garnish 213 covers the adjustment base 201 and the adjustment anchor 207, and is provided with a long through hole 213a in the longitudinal direction. As shown in FIG. 9, a guide 215 is provided inside the pillar garnish 213, and an inner cover 217 is slidably engaged with an engagement groove formed by the guide 215. Inner cover
The 217 is provided with two holes, the operation knob 209 penetrates the upper hole, and the bolt 221 for attaching the through anchor 219 to the adjust anchor 207 penetrates the lower hole. The bolt 221 is screwed with the nut 211 of the adjustment anchor 207. A seat belt 301 is passed through the through anchor 219, and a cap 223 is attached to a base of the through anchor 219 to cover the head of the bolt 221.

Adjust base 201 inside adjust anchor 207
There is a latch piece (not shown) that engages the upper latch hole 203. When the operation knob 209 is turned and pulled toward the user, the latch piece is pulled up and comes out of the latch hole 203.

When adjusting the position of the shoulder, turning the operation knob 209 and pulling it releases the latch piece, and the adjuster 207 can be slid to move the through anchor 219 to a desired position according to the occupant's sitting height. it can. If the operation knob 209 is released at an appropriate position and then slightly slid, the latch piece engages with the nearest latch hole 203, and the shoulder can be positioned.

(Problems to be Solved by the Invention) However, in such a conventional apparatus, since both ends of the adjustment base 201 are fixed to the center pillar 302, the adjuster 201 can be attached to a sedan vehicle having the center pillar 302. It can not be installed on hard type cars etc.

SUMMARY OF THE INVENTION An object of the present invention is to provide a seat belt shoulder position adjusting device that can be mounted on a vehicle body without a center pillar.

(Means for Solving the Problems) The seat belt shoulder position adjusting device of the present invention comprises:
An adjust base having a plurality of locking portions for positioning, an adjuster body attached to the adjust base so as to be vertically movable, one straight shaft being bored, and the other having a seat belt support portion; A latch guide which is supported by being engaged with a latch piece guide hole formed in the adjuster main body at a position centered on the shaft of the adjuster main body; A latch holder which is supported by the adjuster main body so as to be non-rotatable by being engaged with the concave portion of the latch guide; and a latch holder which is located at a position centered on a shaft of the adjuster main body. The adjustable anchor body can be guided by a slide. A latch piece that is freely engageable and disengageable with respect to the locking portion of the adjustment base via a latch piece guide hole, and a latch that is constantly biased in a direction in which the latch piece is engaged with the locking portion of the adjustment base. A biasing member is moved against the biasing direction of the biasing means so that the latch holder is lifted along the shaft, whereby the latch piece can be detached from the locking portion of the adjust base. And operating means for controlling movement along the adjustment base.

(Operation) According to the present invention, the latch piece is slidably guided by the shaft in a non-rotatable manner, and can be advanced and retracted while being supported by the adjustment anchor. The engagement and disengagement become possible.

Further, the operating means is axially slid and guided by a straight shaft erected on the adjust anchor,
The biasing direction also becomes straight, and the operating force can smoothly enter the moving operation direction of the adjusting anchor thereafter.

(Example) Hereinafter, an example of the present invention will be described.

FIG. 1 relates to an embodiment of the present invention, and the shoulder position adjusting device is composed of an adjusting base 1 and an adjusting anchor 17 in outline.

The adjust base 1 is provided with three pairs of two latch holes 3 serving as locking portions, and one end thereof is provided with a mounting hole 5 to a vehicle body. Guide pin 7 at the other end
There is a crouch. The anchor bolt 9 is a bolt for attaching the upper end of the adjustment base 1 to the vehicle body.

The adjustment anchor 17 has the slider 11 made of resin. The slider 11 has a U-shaped engagement groove 11a at a position corresponding to an edge in the width direction of the adjustment base 1,
The engaging groove 11a engages with the adjust base 1 and slides on the adjust base 1. The slider 11 is provided with two latch piece guide holes 13 and an elongated guide pin hole 15.

The body 18 of the adjust anchor 17 has the same shape as the slider 11, and the slider 11 is mounted inside. A shaft 19 is fixed to the adjustment anchor body 18, a latch piece guide hole 21 having the same shape at a location corresponding to the latch piece guide hole 13 of the slider 11, and a guide pin having the same shape at a location corresponding to the guide pin hole 15. A hole 23 is provided. A three anchor 25 is attached to the opposite end of the straight shaft 19. The through anchor 25 is a supporting member that supports the seat belt 301 through the seat belt 301, and includes a base 25a having an elongated slit through which the seat belt 301 passes, and a mounting portion 25b having a mounting hole to the adjust anchor main body 18, and the base 25a Is thickly covered with resin.

The latch piece 29 is provided on the adjustment anchor 17 and is configured to be freely engaged and disengaged with respect to the latch hole 3 of the adjustment base 1. Ie latch piece
Reference numeral 29 denotes a member in which a plate is formed in a U-shape, and a through hole 29a is provided in the center of a top surface connecting both ends. The latch piece 29 is fitted to the resin-made latch holder 31, and the adjustment piece 18
Is inserted into a resin-made latch guide 33 attached to the main body. The latch piece 29 has a through hole 29a in the shaft 19.
And the two ends 29b of the U-shape are attached with the U-shaped ends 29b facing down. The two ends 29b pass through the adjustment anchor body 18 and the respective latch piece guide holes 21 and 13 of the slider 11, and are connected to the latch holes 3 of the adjustment base 1. Engage.

The latch holder 31 is a cylinder formed by cutting out a part of the facing wall surface and connecting them at the bottom surface, and is attached to the shaft 19 through a through hole 31a provided at the bottom surface. On the upper edge of the latch holder 31, a pawl 31b that engages with the operation knob 27 is provided. The latch holder 31 and the latch piece 29 are fitted into the notches of the latch holder 31 from both ends 29b of the latch piece 29, and the top of the latter contacts the bottom of the former.

The latch guide 33 is a cylindrical member, and has a pair of recesses 33a on the inner surface and a pair of claws 33b on the lower edge. Recess 33a
The latch piece 33 engages with the latch piece guide hole 21 of the adjuster main body 18 to fix the latch guide 33.

A coil spring 35 is further provided on the top of the latch piece 29 as urging means.
Push nut fixed to the tip of shaft 19
It is held down at 37. In this state, the coil spring 35
Slightly biases the latch piece 29 in the direction of engagement of the adjust base 1 with the latch hole 3.

The operation knob 27 is made of resin, and the latch holder 31 has a claw 31b.
When the operation knob 27 is pulled up, the latch piece 29 is pulled up via the latch holder 31, and the engagement with the adjust base 1 is released. When the force for pulling the operation knob 27 is released, the operation knob 27 and the latch piece 29 return to their original positions by the urging force of the coil spring 35.

As shown in FIG. 2, the adjust base 1 is swingably attached to a roof side rail 303 of a vehicle body by passing an anchor bolt 9 through a mounting hole 5 at an upper end. The attachment with the anchor bolt 9 is not limited to swinging, but may be a fixed one. In adjusting the shoulder position, the operating knob 27 is pulled forward against the urging force of the coil spring 35 as shown in FIG. The adjustment is removed, and the adjustment anchor 17 is moved. An appropriate position is selected, the operation knob 27 is released, and the latch piece 29 is engaged with the latch hole 3 of the adjustment base 1.

As described above, the shoulder position adjusting device can be attached to the vehicle body without the center pillar panel using the roof side rail 303. Further, in adjusting the shoulder position, the operation of the operation knob 27 can be performed by pulling or releasing the operation knob 27, so that the operability is good.

In addition, the position of the shoulder can be adjusted only approximately in the vertical direction. In contrast, in the device according to the embodiment of the present invention, since the adjust base 1 is swingably mounted, the position of the shoulder can be adjusted to some extent in addition to the vertical direction. Can be performed, and the mountability is further improved.

 FIG. 3 shows another embodiment of the present invention.

As in the above embodiment, the adjust base 57 is provided with a latch hole 59 and a vehicle body mounting hole 61, and a guide pin 65 is caulked in the caulking hole 63.

The slider 87 made of resin is also provided with a guide pin hole 91 which is guided by the guide pin 65 when sliding on the latch piece guide hole 89 and the adjust base 57 in the same manner as described above. A stopper 92 is formed upright at the other end of the guide pin hole 91. Further, a holding portion 87a for holding a tip of a buckle support cover 127 made of a soft resin described later is provided at a tip of the slider 87, and a bolt 53 is attached to the holding portion 87a.
There is provided a concave portion 87b for escaping. A projection 87c is provided in the middle part.

The adjustment anchor 93 is configured in the same manner, and the adjustment anchor body 94 has a shaft 95 and a latch piece guide hole 9.
7. A guide pin hole 99 is provided. When the slider 87 is inserted into the adjustment anchor 93, the stopper
92 faces one end of the guide pin hole 99 of the adjustment anchor 93, and serves as a cushioning material when one end of the guide pin hole 99 contacts the guide pin 65. Therefore, generation of abnormal noise can be prevented. Further, a hole 100 is provided for fitting the projection 87c of the slider 87 to prevent the slider 87 from being displaced from each other. Further, a caulking hole 101 for a pin 103 is provided at the opposite end of the shaft 95.

The upper cover 105 and the lower cover 111 are an upper half and a lower half of a vertically divided two-part decorative cover including the adjust base 57. These are made of a resin material.
An adjustable anchor 93 and a slider 87 are assembled between the covers 105 and 111 and the adjust base 57, and a gap is provided between the covers 105 and 111 and a cover buckle support cover 127 which will be described later. is there. The lower cover 111 has an opening 113 through which these moving parts pass and a rib 114. The ribs 114 increase the rigidity of the lower cover 111, reduce the sliding resistance when the buckle support cover 127 moves relatively, and reduce the operating force. The upper cover 105 is provided with a long hole 109 having a length corresponding to the moving stroke of the operation knob 135, in addition to the cap mounting hole 107. The lower cover 111 is attached to the adjustment base 57 by screwing the tapping screw 115 into the hole 12, and is connected to the upper cover 105 by the tapping screw 115.

The resin buckle 117 is for attaching and detaching a tongue (not shown), and has a slit 125 for attaching the tongue and a release button 123. The buckle 117 and the adjustment anchor main body 94 are respectively fitted with the caulking holes 121 and 101 with the pin 10
It is attached to each other by caulking with 3.

The buckle support cover 127 is a cover that covers the outside of the buckle 117 and the adjuster anchor body 94, and is made of a soft resin material. Buckle support cover 127
Is provided with a hole 131 for the operation knob 135 and a notch 133 for the release button 123 of the buckle 117. Also, a rib 134 is provided to increase the rigidity. When the buckle support cover 127 is attached to these components, the end A comes to the end A of the slider 87 and the end B comes to the position of the end B of the buckle 117.

The latch guide 155 is the same as that of the above embodiment,
This is a resin cylindrical member having a concave portion 155a and a claw 157.
Accordingly, the latch guide 155 is fixed at a position centered on the shaft 95 on the adjustment anchor body 94 by the claw 157 at the lower end.

The latch holder 151 is a resin member having a shape in which a partially cut-out cylinder is connected at the lower end surface, and has a through hole 151a through which the shaft 95 passes through the end surface, and a symmetrical shape at the upper end of the outer surface of the cylindrical portion. Two small projections 153 are provided at the positions. The latch holder 151 is mounted in the latch guide 155 through the through-hole 151a through the shaft 95.

Latch piece 149 passes through hole 149a through shaft 95,
It is a resin member that is mounted in the latch guide 155 with both U-shaped ends 149b facing downward. In the mounted state, both ends 149b are fitted into the concave portions 155a of the latch guide 155 as in the above embodiment. The latch piece 149 can move up and down within the latch guide 155. By moving up and down, the adjustment anchor body 94 and the slider 87 engage and disengage from the latch holes 59 of the adjustment base 57 through the latch piece guide holes 97 and 89 provided in the slider 87, respectively.

The release member 145 is a cylindrical resin member having two screw grooves 147 inside, and is rotatably fitted to the outside of the latch guide 155. At this time, the small protrusion 1 of the latch holder 151
53 is engaged with each screw groove 147.

The spring holder 141 is a cylindrical resin-made product,
The outer periphery has a pair of concave portions 141a and convex portions 141b. The spring holder 141 is fitted into the release member 145 with the cylindrical portion facing downward, and the through hole 1 provided in the center is provided.
At 41c, it is attached to the shaft 95, and then a push nut 137 is attached to the tip of the shaft 95. In this state, the latch holder 151 is fitted into the concave portion 141a of the spring holder 141, and when the release member 145 is rotated, the inner step portion 145a comes into contact with the convex portion 141b of the spring holder 141 to serve as a stopper. When the spring holder 141 is mounted in a fixed position,
The coil spring 143 is slightly compressed, and a downward force is always applied to the latch piece 149 and the latch holder 151.

The return spring 139 has a function of returning the release member 145 to its original angle when the finger is released.

The operation knob 135 is a resin member mounted on the release member 145.

Then, the adjust base 57 is attached to the roof side 303 of the vehicle body with bolts 53 (see FIG. 4).

This installation is performed using the plastic washer 5 shown in FIG.
5.Pass the screw part of the bolt 53 in this order through the adjustment base 57, the plastic bush 69, the plain washer 71, the spring washer 73, the spring plate 75, the under cover 79, the collar 83, and the fiber washer 85. It is screwed into a weld nut (not shown).

The spring plate 75 is a leaf spring that is bent into two parts. The bent part is passed through the slit 81 of the undercar cover 79, and the under cover 79 is interposed therebetween.

The cap 51 is inserted into the cap mounting hole 107 of the upper cover 105.
Attach.

In operation, when the operation knob 135 is turned in a predetermined direction and the release member 145 is rotated, the release member 145 is guided by the screw groove 147, and the latch holder 151 is raised. The latch holder 151 lifts the latch piece 149 to release the engagement with the adjustment base 57. When the operating knob 135 is released, the operating knob 135 and the release member 145 rotate in opposite directions by the return spring 139, and the latch piece 149 descends and returns to the original position.

In this embodiment, since the decorative covers made of resin such as the upper cover 105, the lower cover 111, and the buckle support cover 127 are attached, the feel is good and the appearance is good. Also, it is not dangerous to hit the head. Therefore, even if it arrange | positions outside a pyra garnish, it will look good. Since the operation knob 135 is attached to the adjustment anchor 93, the position of the shoulder can be easily adjusted with one hand by moving the operation knob 135 up and down while twisting the operation knob 135.

5 and 6 show still another embodiment of the present invention.
This embodiment differs from the embodiment shown in FIG.
117 to through anchor 119, and buckle support cover
127 is replaced with an adjust cover 129, respectively, and other structures are substantially the same.

(Effect of the Invention) The seat belt shoulder position adjusting device of the present invention includes:
Since the latch piece is slidably guided by the shaft in a non-rotatable manner and can move forward and backward while being supported by the adjustment anchor, the latch piece can be reliably engaged and disengaged from the locking portion of the adjustment base.

Further, the operating means is axially slid and guided by a straight shaft erected on the adjust anchor,
The biasing direction is also straight, and there is a practical effect that the operating force can smoothly enter the moving operation direction of the adjustment anchor thereafter.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the structure of one embodiment of the present invention, FIG. 2 (a) is a perspective view showing a pattern of mounting the vehicle body of this embodiment, and FIG. 2 (b) is FIG. 3 is an exploded perspective view showing the configuration of another embodiment of the present invention, FIG. 4 is a perspective view of the same mounting state, and FIG. 5 (a) is the embodiment shown in FIG. FIG. 5 (b) is a perspective view showing a state in which covers are removed from the apparatus of FIG. 5 (a), and FIG. 6 is an exploded perspective view of the embodiment of FIG. , FIG. 7 is an exploded perspective view of the conventional device, FIG. 8 is a perspective view of a mounted state, and FIG. 9 is a sectional view taken along line IX-IX of FIG. 1,57 Adjust base 3,59 Latch hole (locking part) 17,93 Adjustment anchor 19,95 Shaft 25,119 Through anchor (support part) 27,135 Operation means (operation knob) 29,149 Latch piece 31,151 Operation means (latch holder) 35,143 Coil spring (biasing means) 117 Buckle (support)

Claims (1)

(57) [Claims] An adjusting base having a plurality of locking portions in a vertical direction and a horizontal direction for positioning, a vertically mounted shaft mounted on the adjusting base and having a straight shaft protruding on one side and a seat on the other side. An adjusting anchor body having a belt support portion; and a latch guide which is supported by being engaged with a latch piece guide hole formed in the adjusting anchor body at a position centered on a shaft of the adjusting anchor body. A latch holder, which is located at a position about the shaft of the adjuster main body and is engaged with the concave portion of the latch guide so as to be non-rotatably supported with respect to the adjuster main body, Can be slid and guided by the latch holder at a position centered on the shaft A latch piece that can be engaged and disengaged with respect to the locking portion of the adjustment base via a latch piece guide hole of the adjustment anchor body; and a direction in which the latch piece is engaged with the locking portion of the adjustment base. A biasing member that is constantly biased to the latch base; and the latch piece is raised along the shaft by moving the latch piece along the shaft by moving the latch piece against the biasing direction of the biasing means. And an operation means capable of controlling the movement along the adjustment base. The shoulder position adjustment device for the seat belt.