JPS61282144A - Seat belt anchor device - Google Patents

Abstract

PURPOSE:To increase the strength of connection between an engagedly stopping pin and a rail member by providing a stepped part while installing a means of allowing said stepped part to be engaged with an engagedly stopping hole, on said engagedly stopping pin of said rail member on which a seat belt supporting member moves. CONSTITUTION:A slide anchor 19 on which a belt supporting member 23 is engagedly installed, is movably installed on a rail member 11 having an engagedly stopping hole 12. And, an engagedly stopping pin 27 which is ener gized by spring in a direction to be fitted in the engagedly stopping hole 12, is installed on this slide anchor 19, slidably in a direction perpendicular to the slide anchor 19, and a resin material 36 is put over the stepped part 35 of the engagedly stopping pin 27. Thereby, when a high impact load is applied to a belt B, the resin material 36 is deformed to allow the stepped part 35 to be engaged with the engagedly stopping hole 12, preventing the engagedly stopping pin 27 from coming off. Thereby, the strength of connection between the rail member 11 and the slide anchor 19 can be improved, securing the restraint on a rider by means of the belt B.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a device for inserting and supporting the shoulder portion of a vehicle seat belt attached to an automobile etc. in a height-adjustable manner. This relates to a seat-held anchor device that prevents the installation position of a belt support member from changing (prior art).Among the seat belt devices installed in automobiles, etc., those that use a connecting belt for both shoulder and waist use In order to accurately attach the seatbelt to the shoulder of the occupant according to the occupant's sitting height and physique, a slip anchor that inserts and supports the middle part of the seatbelt is attached to the center of the vehicle body.
A conventional seat belt anchor device of this type is attached to a vehicle body (S) such as a center pillar as shown in Fig. 7.
A slip anchor + that guides the insertion of the vertically elongated rail fixed to /l/ [material ill j, seat health) [B)]
z+ A fully connected slide anchor +31 is movably attached, and an operation knob (41' A locking pin +41 is provided integrally with the rail member [11], and a plurality of locking holes (6) are bored along the longitudinal direction of the rail member [11] into which the tip of the locking pin +41 can be inserted and removed. Pull the operation knob (41' in the direction of the arrow (X1) as necessary, and insert the locking pin (41
By pulling it out from the + locking hole 161, the slide anchor f31 is free to move up and down, and its height can be adjusted with a simple operation (for example, see Japanese Utility Model Publication No. 59-929). . (Problem to be Solved by the Invention) However, as described above, the locking hole + of the rail member Il+
Insert locking pin (4) into s+ and slide anchor +3
The seat belt anchor device that performs positioning method 1 is easier to operate than the screw-type anchor devices used before, and can quickly support the seat belt at an angle that suits the occupant's physique. While it has the advantage of being able to
In an emergency, for example, when a large impact load is applied to the seat belt, such as during a vehicle collision, the load of the seat belt is transferred to the rail member.

[11 and the slide anchor +31 are concentrated on the locking pin 14+, and the rail member fil
The locking pin (4) may come out of the locking hole (6) due to deflection of itself or deformation of the attachment part of the locking pin (41) to the slide anchor (31), causing the slide anchor (31 and slip anchor (21) to There was a risk that the seat belt would loosen when moving to T1, and there was room for further improvement in this regard.In order to overcome the problem of movement of the slide anchor (31) when such an impact load occurs, The thickness of the metal plate material used for the rail member 01 may be increased, or the locking pin (4
Although it is possible to increase the rigidity of the strength member by increasing the length of the locking hole fitting part 1, in reality, if the plate thickness of the rail member fi+ is increased in this way, the product weight will be increased. In this case, the gap (tl) between the back surface of the rail member and the vehicle body mounting surface must be increased, and the anchor device will protrude greatly toward the vehicle interior, resulting in poor comfort and This results in a problem that increases the risk of occupants accidentally hitting their heads.The present invention was made by focusing on the problems that such conventional seat belt anchor devices had. On the other hand, when the seatbelt is strongly pulled due to an impact load and this load acts on the slide anchor, a locking pin provided in a removable manner has a step that can be locked to the opening edge of the locking hole. At the same time, the stepped portion is configured to prevent the stepped portion from being locked into the locking hole under normal conditions, making it easy to insert and remove the locking pin, and to prevent high loads such as those caused by a vehicle collision. By attaching the MIIT? material that deforms when the step is applied and allows the locking hole to lock into the locking hole, the locking pin and the rail can be fixed without increasing the volume and weight of the rail member or the locking pin. □ (Means for solving the problem) The structure of the present invention for achieving the above object is shown in FIG. 1 of the accompanying drawings corresponding to an embodiment of the invention. This will be explained based on FIG. seat belt (BL)
A slide anchor (19) to which a belt support member color such as a slip anchor is inserted and supported is attached so as to be movable along the longitudinal direction. The slide anchor α9) has the rail member [111
The locking pin iron, which can be inserted into and removed from the locking hole [121] and is constantly biased by a spring in the direction of insertion into the locking hole, slides in a direction perpendicular to the moving direction of the slide anchor 09). It is installed like this. The locking pin young has an engagement step side inwardly leaving a required length at the tip of the fitting hole, and continues to the engagement step side, Small cross section (goods)
is formed, and in the part example where the cross section is small, the engagement stage FflSI3Q will not fit into the locking hole (12) under the normal belt load.
1 is prevented from being locked to the rear opening periphery (181), and when an impact load of more than a predetermined value due to a vehicle collision etc. is applied to the belt, it is pushed by the inner surface of the locking hole α2 and deformed, A resin material (G) is attached that allows the engagement stepped portion (G) to be locked to the opening periphery of the locking hole [121. (Function) The seat belt anchor of the present invention having the above configuration. When the device is used normally, the resin material (T) is attached to the engagement step (to) of the locking pin opening and the opening periphery αa of the locking hole α2.
The slide anchor αat can be moved to any desired height by simply pulling out the locking pin against the biasing force of the spring. Then, insert a locking pin into the other locking hole to position the slide anchor shaft and secure the support height of the seat belt [B] due to the belt support material. In addition, when an impact load of more than a predetermined value is applied to the seatbelt (Bl) due to the cause of a vehicle collision, etc., the resin material (361) may be deformed due to the force applied to the locking pin via the belt support member and the slide anchor Q91. Or destroy the locking pin e2
In order to prevent the locking pin η from being removed from the locking hole ++21 by locking the locking hole opening periphery α& of the rail member 71 (351), the rail member +111 and the slide anchor The connection strength with (19) has been greatly improved,
The accidental movement of the slide anchor Q91 is prevented to ensure proper occupant restraint by the seat belt (Bl). (Embodiment) Embodiments of the present invention will be described in detail below based on the accompanying drawings. FIG. 2 is a front view of the device; FIG. 3 is an enlarged sectional view taken along arrow I-1 in FIG. 2. In these figures, fll+ is a rail member that is made by press-forming a vertically long metal strip into a υ-shaped cross section to give it the required bending rigidity and to drill multiple locking holes α2 along the longitudinal direction. There, the rail member (11
1 is a mounting hole 131°f131' drilled at its upper and lower ends.
(mounting port inserted into)! 141. α41′ washer f15
1. By screwing it onto the O mark on the vehicle body such as the center pillar through t15r, a required gap (
1) is firmly fixed with the interposition. Moreover, the above-mentioned rail member +II+ has each of the locking holes α2
The front opening of the locking pin has an inclined guide surface αη that facilitates insertion and removal of a locking pin described later, and each locking hole [+2
1, the locking hole (121
The opening periphery αa of the rail member is slightly recessed from the rear surface (lla) of the rail member, and the actual depth c of each locking hole [121 is made constant regardless of the plate thickness of the rail member (! 11), and the opening periphery It is considered that the corner of +181 forms a substantially right-angled edge.
), (11b) via a sheet group for reducing frictional force, the slide anchor is made of a metal plate with a cross-section (!l) that is slidably attached in the longitudinal direction of the rail member (!l) , the slide anchor (the oak fixed to the lower half of 191) 1211 has a seat belt (El's shoulder) that can be rotated freely between the base parts of the slip anchor that slidably guides JE by means of a slip ring. A supporting bolt egg is screwed onto the upper half of the slide anchor α9), and a sleeve-shaped locking pin guide tube is provided in the upper half of the slide anchor α9).
is fixed, and a cylindrical locking pin (
271 is slidably inserted in a direction perpendicular to the direction of movement of the slide anchor α9, and the locking pin is inserted between the middle stage part of the locking pin and the spring receiver of the guide cylinder. The contracted fill spring side always keeps the rail member (1
11 is spring-biased in the direction of fitting into the locking hole [+21]. The rear end screw part (3z
The locking pin is a knob for tension operation that is screwed onto the rail member (3), and is integrally provided with a skirt portion (3') on the outer periphery that covers the outer circumferential surface of the guide tube. !l)
At the part that fits into the locking hole [+21], leave a required length of the locking hole, and at least the rail member (!) on the inward side.
The locking hole (I21) is provided with a groove having a depth and a larger crest than the locking hole (I21), and the locking hole (I21) has a groove at the end thereof facing the opening periphery αa of the locking hole [21]. , an engagement stepped portion 0ω that can be engaged with the opening periphery α& is formed. The material (support) does not deform due to stress during normal use of the belt, but only when the belt I is subjected to an impact load of a predetermined value or more, is pushed by the inner surface of the locking hole tI21, deforms or breaks, and the material (support) deforms or breaks as described above. The eye of the engagement step part of the locking pin ρη has enough rigidity to allow the locking pin to lock into the opening periphery f181 of the locking hole (121), and normally there is a slit □□□' in the axial direction as shown in Fig. 4. Either prepare a cylindrical piece with a cylindrical shape and use its own elastic force to fit it between the grooves of the locking pin field, or assemble the locking pin (b) with a resin molded metal. Insert it into the mold and fill the groove (material) directly with the resin material and mold it, or by gluing the resin material (g) in a shape that matches the groove (material) to the locking pin Qη. As such a resin material, any resin that satisfies the above-mentioned mechanical performance can be used, but polyacetal resin, polyester resin, etc. are usually suitable. The outer peripheral surface is the locking pin Q
It has a shape that is approximately flush with the outer peripheral surface of the sword, and is designed so that the locking pin does not get in the way when it is inserted into and removed from the locking hole l121. In the figure, (3η is the slide anchor α9) fixed to the front side of the rail member flllg and the slide anchor α9.
This is a cover to hide ω. The seat belt anchor device of the present invention has the above-mentioned configuration, and its operation will be explained next. First, when the seat belt is worn normally, the height of the slip anchor ram is adjusted to match the physique of the occupant. To move the slide anchor phase up and down, use the knob (3I)
When the locking pin field is pulled out of the locking hole (121) of the rail member flll+, the slide anchor pupil becomes movable along the rail member (!), so the slide anchor (I9) When the locking pin is moved to the desired position and the knob (3I) is released, the locking pin will automatically fit into the locking hole due to the biasing force of the fill spring side, positioning the slide anchor (19) and preventing it from slipping. The anchor cam is held at a predetermined height. At this time, the resin material (31
1 is because the seat belt (B) does not deform at all under stress during normal use, and prevents the engagement step side of the locking pin from engaging with the opening periphery of the locking hole ■2. , to facilitate the insertion and removal operation of the locking pin Q71, and to alleviate the collision between the outer surface of the locking pin and the inner surface of the locking hole (12I),
Prevents abnormal noises caused by vibrations when the vehicle is running. In addition, when the slide anchor (19) is fixed as described above, if a load is applied to the seatbelt (Bl) in excess of a specified amount due to a vehicle collision, etc. (generally 9 to 3 tons for 200), the slide anchor A load in the direction perpendicular to the axis is applied to the locking pin f27] via the anchor α9), and the resin material (G) is pushed and deformed by the inner surface of the locking hole Oz, causing the locking pin (271's engagement stepped portion (Since the third lock is locked to the opening periphery α& of the locking hole α2, this prevents the locking pin (271) from being removed from the locking hole (121), and the strength of the connection between the two is greatly increased. This prevents the slide anchor 09) from slipping down and maintains the proper state of restraint of the occupant by the seat belt (B). Fig. 5 is a sectional view showing another embodiment of the seat belt anchor device of the present invention. The locking pin inserted through the guide tube +261 fixed to the slide anchor 09) has a flange-like engagement hole (33) at the tip of the locking hole insertion part, and the locking pin (33) is inserted between the engagement parts. A cylindrical resin material +36) is inserted into the outer periphery of the small diameter part (to), which is smaller in cross section than between the engaging parts, which is formed inwardly through the engaging step part 3ω, and the resin material (T) is Both ends are held between washers (39) attached to the engagement step (to) and the intermediate step (c). In the figure, parts with the same reference numerals as in FIG. The same materials and the same parts are shown. In the anchor device with the above configuration, the inner surface of the guide tube and the outer periphery of the small diameter part of the engagement pin do not come into contact with each other. At the same time, in the event of a vehicle collision, etc., deformation between the resin material groups becomes easy, and the engagement between the engagement step (toward) and the locking hole periphery αa is performed well. Still another embodiment of the seat belt anchor device of the invention is shown, in which the locking hole α2 of the rail member fill and the locking pin (b) are rectangular, and the locking pin (271
At the top and bottom of the locking hole insertion part, notches forming engagement stages i+as and eggs' are formed, and a resin material is attached within each notch. Therefore, in the structure described above, when a horizontal downward impact load is applied to the locking pin □□□, the resin material (T)
It deforms when pressed by the inner surface of
The locking pin Qη is engaged with the locking pin Qη to prevent it from being pulled out, and the sliding anchor 4 is prevented from slipping down, as in the previous embodiment. In addition, in the above embodiment, a slip anchor is used as the seat belt support member, and the seat belt [B]
Although the anchor device of the present invention is of the type that inserts the buckle through the shoulder of the passenger and turns the buckle, it can also be applied to connect the buckle to the vehicle body above the shoulder of the occupant so that the buckle can be vertically adjusted. A buckle is attached in place of the slip anchor, and a tongue attached to the tip of the seat belt is removably connected to the buckle. [Effects of the Invention] As described above, the seat belt anchor device of the present invention has the following effects:
An engaging stepped portion is formed inwardly in the locking hole fitting portion of the locking pin that connects the rail member and the slide anchor tonnage, leaving a required length from the tip of the fitting portion, and is continuous with the stepped portion. A portion with a small cross section is provided, and the portion with a small cross section is deformed only when a predetermined load or more is applied to the seat belt secured to the slide anchor, so that the engagement step portion closes in the locking hole. A resin material that allows locking is attached to the periphery of the opening, and in an emergency such as a vehicle collision, the engagement stepped portion of the locking pin is locked to the periphery of the locking hole opening, thereby increasing the connection strength between the rail member and the slide anchor. Since it is C-shaped to increase the friction, the resin material prevents the engagement step from engaging with the locking hole during normal belt use, and the locking pin can be smoothly inserted into and removed from the locking hole. The height of the slide anchor can be easily adjusted, and in the event of an emergency such as a vehicle collision, the locking pin increases the connection strength between the rail member and the slide anchor. It has the excellent effect of ensuring the safety of the occupants by maintaining the appropriate state of restraint of the occupants by the belt. Furthermore, according to the present invention, the resin material provided in the portion where the cross section of the locking pin is small alleviates the collision between the locking pin and the locking hole, making it easy to insert and remove the locking pin and the locking hole. Even when the opening area of the locking hole is increased for the purpose of increasing the opening area, it can also be expected to have the effect of preventing the occurrence of abnormal noise due to rattling of the locking pin due to vibrations when the vehicle is running.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a seat belt anchor device according to the present invention, FIG. 2 is a front view of the same anchor device, and FIG.
The figure is an enlarged sectional view taken along the O-R arrow in FIG. 2, FIG. 4 is an exploded perspective view showing an example of the locking hole fitting portion of the locking pin, and FIG. 5 is another embodiment of the seat belt anchor device of the present invention. FIG. 6 is an exploded perspective view showing still another embodiment of the seat belt anchor device of the present invention, and FIG. 7 is a side sectional view of a conventional seat belt anchor device. Curved...rail member, 021...locking hole. +1lEl...vehicle body, αa...periphery of locking hole opening. (Igl,... Slide anchor - Seat belt support member. Wing... Locking pin, Side... Spring. G4eS (391... Portion with small cross section (groove, notch) (35car ...Engaging stepped portion, (G)...Resin material, (B)...Seat belt.

Claims (1)

[Claims] 1. A slide anchor is attached movably along the longitudinal direction of a vertically elongated rail member fixed to the vehicle body and having a plurality of locking holes drilled along the longitudinal direction; A seatbelt support member is attached to the slide anchor, and the slide anchor is capable of being inserted into and removed from the locking hole of the rail member orthogonally to the moving direction of the slide anchor, and the locking hole is fitted in the locking hole. In a seatbelt anchor device in which a locking pin is attached with a spring bias, an engaging step is provided inwardly in the locking hole fitting portion of the locking pin, leaving a required length at the tip of the fitting portion. A portion with a small cross section is provided continuously to the stepped portion, and the portion with the small cross section is deformed only when a load of a predetermined value or more is applied to the seat belt, and the engaging step is formed. A seatbelt anchor device, characterized in that a resin material is attached to allow the portion to be locked to the periphery of the opening of the locking hole. 2. The engagement stepped portion and the portion with a small cross section are formed by grooves that are recessed facing the inner surface of the locking hole at a portion slightly inward from the tip of the locking hole insertion portion of the locking pin. A seat belt anchor device according to claim 1. 3. A patent in which the locking hole fitting portion of the locking pin has a cylindrical shape, a groove forming an engagement step is provided around the outer periphery of the fitting portion, and a cylindrical resin material is charged into the groove. A seat belt anchor device according to claim 1 or 2. 4. The seat belt anchor device according to any one of claims 1 to 3, wherein the outer surface of the resin material is formed substantially flush with the outer periphery of the locking pin. 5. The sheet according to any one of claims 1 to 4, wherein the resin material has a cylindrical shape with a slit formed in the axial direction, and is elastically attached to a groove on the outer periphery of the locking pin. Belt anchor device. 6. The seat belt anchor device according to any one of claims 1 to 4, wherein a resin material is molded in the groove of the locking pin.