JPH0349966Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a shoulder anchor device for an automobile seat belt.

Prior Art In the case of an automobile, for example, as shown in FIG.
The shoulder anchor 10 is constructed by connecting the through ring 2 through which the seat belt 1 is inserted, and the seat belt 1 is connected to the connecting portion between the tongue 4 and the buckle 5.
The shoulder anchor 10 is hung obliquely in the vertical direction around the chest of the occupant so that the occupant can be restrained to the seat 9. The aforementioned through ring 2 may be attached directly to the center pillar 8 without using the anchor bracket 3, but in any case, the attachment position of the through ring 2 is determined based on the standard body shape of the passenger. In FIG. 1, 6 indicates a retractor, and 10a indicates a floor-side anchor.

However, in such a conventional configuration, if the occupant sitting on the seat 9 deviates from the standard body shape, the shoulder anchor 10 may be positioned too high or too low, making it impossible for the occupant to properly wear the seat belt 1, causing discomfort to the occupant. There were problems such as the inability to provide a pleasant sensation or to take full advantage of the effectiveness of wearing a seatbelt.

Purpose of the invention In view of the above-mentioned conventional situation, the present invention has been developed to enable the position of the shoulder anchor to be adjusted up and down according to the body shape of the seatbelt wearer, so that the seatbelt can be worn properly. It is an object of the present invention to provide a shoulder anchor device for an automobile seat belt that can be adjusted up and down with a simple operation and has excellent usability.

Structure of the Invention In order to achieve the above-mentioned object, the shoulder anchor device of the present invention has an anchor bracket having a channel-shaped cross section attached to the vehicle body, and a through ring through which a seat belt is inserted, which is pivotally supported, and is slidably attached to the anchor bracket. It consists of a fitted movable anchor bracket having a channel-shaped cross section and a locking mechanism for positioning the movable anchor bracket with respect to the anchor bracket, the locking mechanism being disposed through the upper wall of the movable anchor bracket and protruding from the movable anchor bracket. a holder having an operation knob at one end; a lock pin fitted to the other end of the holder and loosely fitted into a long hole formed in the height direction on both side walls of the movable anchor bracket; and a lock pin formed on both side walls of the anchor bracket. a positioning hole having ratchet teeth on one side edge that engages with a lock pin to restrain downward movement of the movable anchor bracket; and a spring that biases the holder in a direction in which the lock pin engages with the ratchet teeth. The position of the through ring can be arbitrarily adjusted within the formation range of the positioning hole by operating the operation knob.

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

In FIGS. 2 to 4, reference numeral 11 denotes an anchor bracket having a channel-shaped cross section, and the anchor bracket 11 has mounting holes 12 provided at both ends of the bottom wall 11a.
Or, by inserting a bolt (not shown) into 13, it is fixedly or rotatably attached to the roof side rail 7 or center pillar 8 shown in FIG. 1.

A movable anchor bracket 14 is smaller than the anchor bracket 11 and has a channel-shaped cross section, and is slidably fitted inside the anchor bracket 11. This movable anchor bracket 14
A through ring mounting hole 1 is provided at one end of the upper wall 14a.
5, and a through ring 16 through which a seat belt (see FIG. 1) is inserted is fixedly or rotatably mounted through a bolt (not shown) through the mounting hole 15. Reference numeral 17 indicates a resin cover that covers the mounting base of the through ring 16.

Reference numeral 18 indicates a locking mechanism for positioning the movable anchor bracket relative to the anchor bracket, and the locking mechanism 18 includes a holder 19, a lock pin 20,
It is generally composed of a positioning hole 21 and a spring 22. The holder 19 has a U-shaped base portion 19a disposed within the movable anchor bracket 14.
and a support shaft 19b protruding from the upper surface of the base portion 19a.
The support shaft 19a is inserted into a mounting hole 23 provided in the upper wall 14a of the movable anchor bracket 14, and an operation knob 24 is mounted on the protruding end thereof. The lock pin 20 penetrates both ends of the base portion 19a and is fixed thereto, and its protruding ends on both sides are loosely fitted into elongated holes 25 formed in the height direction of both side walls 14b of the movable anchor bracket 14 to operate the operation knob 24. This makes it possible to move up and down within the range of the elongated hole 25. The positioning hole 21 is formed in both side walls 11b of the anchor bracket 11, and ratchet teeth 26 are formed on the upper edge thereof to engage with the lock pin 20 and restrain the downward movement of the movable anchor bracket 14. The spring 22 is the support shaft 1 of the holder 19
It is elastically loaded between the spring seat portion 27 provided at 9b and the upper wall 14a of the movable anchor bracket 14, and normally pulls the holder 19 to move the lock pin 20 in the direction in which it engages with the ratchet teeth 26. It is strong.

Next, the operation of the embodiment device having the above configuration will be explained.

Under normal conditions, the force of the spring 22 causes the lock pin 20 to engage the ratchet teeth 26 of the positioning hole 21.
Since the movable anchor bracket 14 is engaged with
is fixedly connected to the anchor bracket 11 in the direction in which it is pulled up and down by the seat belt 1.

When adjusting the position of the through ring 16, for example, when lowering the position, the operation knob 24 is pressed against the force of the spring 22, and the lock pin 20
is released from the ratchet tooth 26 to release the lock,
The movable anchor bracket 14 is allowed to slide freely.
Therefore, when the movable anchor bracket 14 is slid downward and the pressing force of the operation knob 24 is released at an arbitrary position, the lock pin 20 is re-engaged with the ratchet teeth 26.
The movable anchor bracket 14 is positioned by engaging with the movable anchor bracket 14.

When adjusting the position of the through ring 16 upward, there is no need to press the operating knob 24.
If the movable anchor bracket 14 is pushed upward,
Since the locking pin 20 passes over the ratchet teeth 26, the position can be adjusted with a so-called one-touch operation.

Note that the ratchet teeth 26 may be formed on the lower edge side of the positioning hole 21, in which case the spring 22
may be elastically mounted between the base portion 19a of the holder 19 and the upper wall 14a of the movable anchor bracket 14 to push the holder 19.

Effects of the invention As described above, according to the invention, the position of the shoulder anchor of the seat belt can be adjusted vertically according to the physique of the occupant, so that the seat belt can be worn properly without causing discomfort to the occupant. This has the advantage of ensuring occupant protection. Additionally, unlocking during this adjustment can be done very easily by pushing or pulling the operating knob, and the lock can be automatically locked after adjustment, providing excellent operability. When adjusting the position to , the position can be adjusted or locked simply by moving the movable anchor bracket upward without operating the operating knob, so there is an advantage that the operability is extremely high. In addition, since the elongated hole provided in the height direction in the side wall of the movable anchor bracket serves as a guide for the lock pin, the lock pin can be moved up and down reliably and engaged with the predetermined position of the ratchet teeth. , the movable anchor bracket can be positioned reliably. Furthermore, in the event of a vehicle collision, a load in the traction direction is applied to the through-ring shaft support of the movable anchor bracket, so the movable anchor bracket slightly tilts relative to the anchor bracket within the fitting clearance range, using the engagement position of the lock pin as a fulcrum. However, due to this tilting, the lock pin is wedged between the elongated hole and the side edge of the ratchet tooth, and the downward movement of the lock pin, that is, movement in the unlocking direction is restrained. This has the advantage that even in the event of a collision, the lock is difficult to dislodge, further increasing safety. It has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the arrangement of a seat belt equipped with a conventional shoulder anchor device, Fig. 2 is an exploded perspective view showing an embodiment of the present invention, and Fig. 3 shows the arrangement of the lock mechanism in the same assembled state. A sectional view of the portion, and FIG. 4 is a side view of the same. 11... Anchor bracket, 14... Movable anchor bracket, 16... Through ring, 18...
Lock mechanism, 20... Lock pin, 21... Positioning hole, 22... Spring, 25... Long hole, 2
6... Ratchet teeth.

Claims (1)

[Scope of utility model registration request] An anchor bracket with a channel-shaped cross section that is attached to the vehicle body side; a movable anchor bracket with a channel-shaped cross section that pivotally supports a through ring through which a seat belt is inserted and is slidably fitted inside the anchor bracket; a locking mechanism for positioning the movable anchor bracket relative to the anchor bracket; the locking mechanism includes a holder disposed through the upper wall of the movable anchor bracket and having an operating knob at a projecting end; A lock pin is attached to the other end and is loosely fitted into a long hole formed in the height direction on both side walls of the movable anchor bracket, and a lock pin is formed on both side walls of the anchor bracket and engaged with the lock pin on one side edge. A shoulder anchor device for an automobile seat belt, comprising: a positioning hole having ratchet teeth for restraining downward movement of a movable anchor bracket; and a spring for biasing the holder in a direction in which a locking pin of the holder engages with the ratchet teeth. .