JPH0653328U - Shoulder belt anchor adjustment device - Google Patents

Abstract

(57) [Abstract] [Purpose] The amount of vertical stroke required for unlocking the lock member can be secured while minimizing the amount of vertical stroke of the lock member according to the movement of the slide button. A belt anchor adjusting device is provided. [Structure] A lock release lever 7 in which operating pieces 7a, 7a engage with a lock pin 6 and is rotatably supported at an intermediate portion, and an abutment with a pressing portion 7b of the lock release lever 7 and an outer circumference of a sleeve nut Slide piece that can be moved along the section 19
And an operation means for rotating the lock release lever 7 in the lock release direction by moving the slide piece 19 in the bolt axis direction are provided on the slide base 2 movable along the guide rail 17, and the lock release lever is also provided. 7
Is made of an elastically flexible material, and the swingable stroke amount of the operating pieces 7a, 7a of the lock release lever that rotates in accordance with the movement of the operating means is larger than the movable stroke amount of the lock pin 6. Set.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a shoulder belt anchor adjusting device used in a vehicle seat belt device and capable of adjusting the support height of a shoulder belt according to the physique of an occupant.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as a seat belt device for safely holding a vehicle occupant on a seat, there is a three-point seat belt device using continuous webbing. In this type of seat belt device, the effective length of the webbing is adjusted according to the occupant's physique, and the through anchor attached to the center pillar can be freely moved in the vertical direction in order to mount the webbing accurately on the shoulder of the occupant. Various shoulder belt anchor adjustment devices that can be moved to adjust the shoulder belt support height have been adopted.

As such a shoulder belt anchor adjusting device, for example, there is a shoulder belt anchor adjusting device disclosed in Japanese Utility Model Laid-Open No. 4-62254. The shoulder belt anchor adjusting device includes a rail (guide rail) having a plurality of fitting holes formed therein, a slide plate (slide base) having a bush and a sleeve nut and movable along the guide rail, and a head portion. The lock pin is a lock member that has a large-diameter flange part that fits in the bush hole of the slide plate and can fit in the fitting hole of the guide rail, and the lock pin is always biased in the locking direction. Spring, a lock release lever whose one end abuts the large-diameter flange of the lock pin and is rotatably supported in the middle, and a flange loosely fitted to a bolt screwed to the sleeve nut of the slide base. A collar that is in contact with the other end of the lock release lever and is movable in the axial direction of the bolt, and a collar that supports the webbing and is swingably attached to the bolt. The through anchor is attached to the bolt, and the slide button is engaged with the collar by being loosely fitted to the bolt and biased so as to be slidable in a direction perpendicular to the bolt shaft.

When the slide button is pressed, the collar that engages with the slide button moves in the bolt axial direction, and the lock release lever whose one end is in contact with the collar is rotated to move the lock release lever. The other end of the lock pin lifts the large-diameter flange of the lock pin against the biasing force of the spring, and the lock pin shaft is pulled out from the fitting hole of the guide rail to unlock.

Therefore, when adjusting the position of the slide base, the occupant slides the slide base to a desired position while pressing the slide button, and then releases the hand from the slide button, so that the lock pin is released. The slide base can be fitted in the fitting hole of the guide rail to restrain the slide base at a desired position of the guide rail.

[0006]

[Problems to be solved by the device]

 However, in the above-mentioned shoulder belt anchor adjusting device, there are many component parts that convert the movement of the slide button, which is the operating means, into the vertical movement of the lock pin, and the movement of the lock pin according to the movement of the slide button is large. There is a problem that the amount of possible strokes varies greatly due to variations in the dimensions of each component. Especially, if the stroke of the lock pin is not enough and the shaft of the lock pin cannot be pulled out from the fitting hole of the guide rail, the position of the slide base cannot be adjusted. It is necessary to set a large stroke amount or increase the dimensional accuracy of each component.

However, increasing the dimensional accuracy of each component is difficult in terms of processing, and the manufacturing cost increases. Also, in order to set the vertical stroke of the lock pin according to the movement of the slide button to a large amount, it is necessary to make a large space for the vertical movement of the lock pin. It is difficult to make a large space for the vertical movement of.

Therefore, an object of the present invention is to solve the above problems, and is necessary for unlocking the lock member while minimizing the vertical stroke amount of the lock member according to the movement of the slide button that is the operation means. The purpose of the present invention is to provide a cheap and compact shoulder belt anchor adjusting device that can secure a large vertical stroke amount.

[0009]

[Means for Solving the Problems]

 The above object of the present invention is to provide a guide rail having a plurality of engaging portions, a slide base movable along the guide rail, and an engaging portion of the guide rail penetrating a through hole of the slide base. A lock member that can prevent the slide base from moving by engaging with the lock base, a spring that constantly urges the lock member in the locking direction, and one end that engages with the lock member so that the intermediate base can rotate. A supported lock release lever, a collar member that is in contact with the other end of the lock release lever and is movable along the axial direction of the bolt fixed to the slide base, and swingably attached to the bolt. A through anchor attached to support the webbing, and an operation means for rotating the lock release lever in the lock release direction by moving the collar member in the bolt axial direction. In the shoulder belt anchor adjusting device, the lock release lever is formed of an elastically flexible material, and one end of the lock release lever swings according to the movement of the operating means. The shoulder belt anchor adjusting device is characterized in that the movable stroke amount is set to be larger than the movable stroke amount of the lock member.

[0010]

[Action]

 That is, according to the above-mentioned configuration, the amount of lap of the swingable stroke amount of the one end portion of the lock release lever which is preset so as to exceed the movable stroke amount of the lock member is equal to the one end portion of the lock release lever. Is absorbed by bending, the lock member does not need to make the vertical movement space larger than necessary. In addition, even if the swingable stroke amount of the one end of the lock release lever is reduced due to the dimensional variation of each component of the operating means, the lap amount is larger than the movable stroke amount of the lock member in advance. Since the lock member is set, it is possible to secure the movable stroke amount necessary for unlocking the lock member from the locking portion of the guide rail.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a partially exploded vertical sectional view of a shoulder belt anchor adjusting device 1, FIGS. 2 and 3 are exploded partial sectional front views of a shoulder belt anchor adjusting device 1 according to the present invention, and FIGS. 4 and 5 are in FIG. It is an AA cross-section arrow view and a BB cross-section arrow view of the shoulder belt anchor adjustment device 1.

In the shoulder belt anchor adjusting device 1, a guide rail 17 has a longitudinal direction as a vertical direction, and an upper end portion and a lower end portion of the guide rail 17 are fixed to a vehicle body by fastening bolts 12 to a center pillar 29 in a vehicle compartment. The guide rail 17 is made of a steel plate having a substantially U-shaped cross section, has a plurality of locking holes 11 arranged in the longitudinal direction at its bottom, and is bent at its both ends. The guide flange 17a is provided.

The lower half of the locking hole 11 has a semicircular cross section and the upper half has a rectangular cross section, and a slide member 4 described later is positionally adjusted from the lower side to the upper edge of the rectangular cross section. When the lock pin 6 is a lock member, the inclined surface 11a extending from the bottom surface of the lock pin 6 toward the center pillar is formed by cutting and bending so that the lock pin 6 can be moved without being unlocked. Further, the inclined surface 11a is pressed so that the surface on the opposite side of the inclined surface 11a becomes a tapered surface parallel to the guide rail surface in order to suppress the amount of protrusion to the center pillar side when forming the inclined surface 11a.

In addition, stoppers 17 b are formed at lower portions of both ends of the guide rail 17 to prevent the slide member 4 from coming off below the guide rail 17. The interior of the guide rail 17 inside the vehicle is covered with an upper garnish 16 having a window hole through which a slide member 4 described later can be moved. The slide member 4, which is guided by the guide rail 17 and is movable in the vertical direction, is configured such that the slide base 2 and the slider 3 are fixed in a face-to-face state. The slide base 2 is formed by forming a rectangular metal flat plate having a thickness smaller than that of the inner space of the guide rail 17 surrounded by the bottom of the guide rail 17 and the guide flange 17a into a rectangular shape. However, the end in the width direction faces the guide flange 17a. The slider 3 is a rectangular frame body made of a synthetic resin, and engaging edges 3a extending in the longitudinal direction are formed at both ends in the width direction on the upper surface side of the central portion, and the width direction on the lower surface side near the end portions in the longitudinal direction Engaging edges 3b extending in the longitudinal direction are formed at both ends, and the engaging flanges 3a and 3b and the widthwise end of the slide base 2 allow the guide flange 17a of the guide rail 17 to play. A U-shaped groove that can be fitted in the fitted state is formed. As a result, the slide base 2 can support the load acting in the vehicle interior direction (the arrow X direction in FIG. 1) on the guide rail 17 via the guide flange 17a.

A sleeve nut 5 to which a bolt 9 constituting a through anchor assembly 42 described later is screwed is fixed to one longitudinal end of the slide base 2, and the lock pin 6 is supported to the other end. Thus, the burring support holes 2a are formed. The slider 3 has a substantially rectangular opening corresponding to each part of the support hole 2a of the slide base 2 and the sleeve nut 5, and a lock release lever 7 is rotatably supported inside the center of the side wall thereof. Lever support portions 3c for protruding are provided so as to face each other.

The lock release lever 7 includes a pair of operating pieces 7 a, 7 a extending upward from an intermediate portion supported by the lever support portion 3 c of the slider 3 along both widthwise edges of the slide member 4, and an intermediate portion. It has a substantially U-shape including a pressing portion 7b arranged below the sleeve nut 5 so as to surround the outer peripheral portion thereof and connecting the respective operating pieces 7a, 7a. An intermediate portion of the lock release lever 7 is curved so as to be convex toward the slide base 2 side, and the lock release lever 7 can swing and rotate on the slide base 2 with the intermediate portion as a rotation center. . Then, the respective swinging tip ends of the operating pieces 7a, 7a are engaged with the wing portion 6b of the lock pin 6 described later, and the pressing portion 7b is an annular collar member loosely fitted in the sleeve nut 5. It contacts a certain slide piece 19. The lock release lever 7 is made of a material having a large bending of the operating piece 7a and elastic elasticity as shown in the figure, and can be bent in the thickness direction of the slide body 4. .

As shown in FIG. 5, a lock pin 6 is slidably fitted in the support hole 2 a of the slide base 2. The lock pin 6 has a shaft portion 6c that can be engaged with the locking hole 11 of the guide rail 17, a large-diameter flange portion 6a formed on the head for retaining, and an upper surface of the large-diameter flange portion 6a. And a pair of wings 6b projecting outward in the radial direction. Therefore, the lower surface of the wing portion 6b has a space between it and the upper surface of the slide base 2, and engages with the swinging tip portions of the operating pieces 7a, 7a arranged in the space. There is. The shaft portion 6c is covered with a synthetic resin covering body so that the shaft portion 6c smoothly engages with the support hole 2a and the locking hole 11 and that no metallic noise is generated.

The lock pin 6 is biased in the engagement direction with the locking hole 11 by the biasing force of the return spring 8 which is a compression coil spring. Therefore, in a normal state, the shaft portion 6c of the lock pin 6 penetrates the support hole 2a of the slide base 2 and projects to the outside of the slide member 4, and enters the locking hole 11 of the guide rail 17. Has become.

Therefore, in the lock release lever 7, since the swinging tip end portions of the operating pieces 7a, 7a are pressed by the wing portion 6b of the lock pin 6 to be urged to rotate toward the center pillar, the pressing portion 7b is pressed. Is rotated to the inside of the vehicle compartment and abuts against the pressing portion 19a of the slide piece 19 (see FIG. 4). A cover 23, which holds the outer peripheral portion of the slide piece 19 so as not to drop from the sleeve nut 5 and holds the end portion of the return spring 8 on the inside of the slide member 4 by the tapping screw 24, slides on the slide base 2. Fixed to. Further, the cover 23 sandwiches and fixes the lower garnish 10 with the slide member 4.

A through anchor assembly 42 that supports a shoulder belt of a seat belt is attached to the sleeve nut 5. The through anchor assembly 42 includes a through anchor 21 swingably attached to a neck portion of a bolt 9 for supporting a webbing 22, and a slide pillar 19 for releasing a lock state of the lock pin 6 from a center pillar. And operating means for rotating the lock release lever 7 in the lock release direction.

The operation means is a pair of operation buttons 13 that are movable in the width direction of the shoulder belt anchor adjustment device 1, and an annular shape that is linked to the operation buttons 13 and moves the slide piece 19 to the center pillar side. The cam plate 25 is composed of a lower cover 14 which slidably supports the operation button 13 and the cam plate 25, and is fixed to the thru anchor 21 by a countersunk screw 15. It is covered by an upper cover 27 that is attached.

As shown in FIGS. 3 and 4, the operation button 13 is composed of a pair of hollow members that are guided by a lower cover 14 and are movable in the width direction of the slide member 4. The operation button 13 is a compression coil spring. Are urged in the directions in which they are separated from each other. The operation plate 13 is linked with the cam plate 25 which is guided by the lower cover 14 and the sleeve nut 5 and is movable in the axial direction of the bolt 9. That is, a pair of wall portions that extend toward the other operation button 13 that opposes the other operation button 13 inside the one operation button 13 (the operation button on the left side in FIG. 3) so that the cam plate 25 is sandwiched therebetween. 13a is provided, and an inclined portion 13b is formed at the lower edge of the wall portion 13a. On the other hand, a pair of shaft portions 25a protruding outward in the radial direction are formed on the outer peripheral portion of the cam plate 25, and face the inclined portion 13b of the wall portion 13a. Therefore, if the pair of operation buttons 13 are moved from the normal state so as to be close to each other by sandwiching them, the inclined portion 13b slides on the shaft portion 25a of the cam plate 25, and the cam plate 25 is moved to the center pillar. Push down.

Next, a method for adjusting the position of the shoulder belt anchor adjusting device 1 will be described. When adjusting the position of the webbing 22 supported by the through anchor 21 from the lower side to the upper side, the slide member 4 can be moved without unlocking the lock pin 6 as described above. Therefore, if the through anchor assembly 42 is moved upward as it is, the lock pin 6 is sequentially inserted into the other locking holes 11 located above the locking hole 11 which was initially engaged by the urging force of the return spring 8. The slide member 4 is inserted and the downward movement of the slide member 4 is restrained at an appropriate position.

Further, in order to adjust the position of the webbing 22 supported by the through anchor 21 from the upper side to the lower side, a pair of operation buttons 13 may be held. When the pair of operation buttons 13 are sandwiched and the operation buttons 13 are moved toward each other against the urging force of the return spring 18, the inclined portions 13b are slidably contacted with the shaft portions 25a of the cam plate 25 and the cam portions 25a are slidably contacted with each other. Push the plate 25 down toward the center pillar. Therefore, as shown in FIG. 6, the upper edge of the slide piece 19 is pressed against the lower edge of the cam plate 25, and the slide piece 19 is pushed down toward the center pillar. Then, in the slide piece 19 pushed down to the center pillar side, the pushing portion 19a pushes the pushing portion 7b of the lock release lever 7 to the center pillar side. Therefore, in the lock release lever 7 rotatably supported by the lever support portion 3c with the intermediate portion as the rotation center, the rocking tip portions of the operating pieces 7a, 7a resist the urging force of the return spring 8 and the vehicle. Rotate indoors. Then, the lock pin 6 engaged with each swing tip of the operating pieces 7a, 7a by the wing 6b is lifted to the inside of the vehicle compartment, and the shaft 6c is pulled out from the locking hole 11 of the guide rail 17. Be done.

By the way, as shown in FIG. 7, when the upper end of the lock pin 6 comes into contact with the inner wall of the cover 23, the shaft 6c is reliably pulled out from the locking hole 11 of the guide rail 17. The amount of movable stroke required to be released and unlocked is secured. The lock release lever 7 is preset so that the swingable stroke amount of each swing tip of the operating pieces 7a, 7a exceeds the movable stroke amount of the lock pin 6, and the wrap amount thereof is set. The amount is absorbed by the actuating pieces 7a, 7a bending in the thickness direction of the slide body 4. That is, even when the swingable stroke amount of the operating pieces 7a, 7a is set to be large so that the shaft portion 6c is reliably pulled out from the locking hole 11 of the guide rail 17, the lock pin 6 has a movable stroke. Since it is not necessary to increase the amount more than necessary and a large vertical movement space is not required, the sliding member 4 can be made compact.

Also, the swingable stroke amount of the operating pieces 7a, 7a varies depending on the dimensional variation of each component of the operating means, but the swingable stroke amount of the operating pieces 7a, 7a is a reference. Even if the stroke amount is smaller than the stroke amount, the wrap amount is set in advance to be larger than the movable stroke amount of the lock pin 6, so the lock pin 6 is necessary for unlocking from the locking hole 11 of the guide rail 17. Secures a large amount of movable strokes.

Therefore, the amount of movable stroke required for unlocking the lock pin is reliably ensured without increasing the dimensional accuracy of each component of the operating means. Next, while sandwiching the operation button 13, the through anchor assembly 42 is moved below the guide rail 17, and when the position of the webbing is moved to an appropriate position with respect to the shoulder of the occupant to wear, the operation button 13 is used. Let go. Then, the shaft portion 6c of the lock pin 6 is engaged with the predetermined locking hole 11 by the urging force of the return spring 8 and restrains the downward movement of the slide member 4.

The slide base and slider, the lock member, the lock release lever, the collar member, and the like that compose the slide member of the above-described embodiment are not limited to the shapes of the above-described embodiment, and various modifications are possible. Needless to say, the operation means for rotating the lock release lever is not limited to the means of the above embodiment.

[0029]

According to the present invention, the wrap amount of the swingable stroke amount at one end of the lock release lever that is preset so as to exceed the movable stroke amount of the lock member that can prevent the slide base from moving. Since the minute portion is absorbed by the bending of one end of the lock release lever, the vertical movement space of the lock member need not be larger than necessary. In addition, even if the amount of swingable stroke at one end of the lock release lever decreases due to the dimensional variation of each component of the operating means that rotates the lock release lever in the lock release direction, the amount of wrapping is reduced in advance. Is set to be larger than the movable stroke amount of the lock member, so that the lock member can also secure the movable stroke amount necessary for unlocking from the locking portion of the guide rail. Therefore, the vertical stroke amount required to unlock the lock member can be secured without increasing the dimensional accuracy of each component of the operating means.

Therefore, it is possible to secure the amount of vertical stroke required for unlocking the lock member while minimizing the amount of vertical stroke of the lock member in accordance with the movement of the slide button which is the operating means, and thus the cost is low. It is possible to provide a small shoulder belt anchor adjustment device.

[Brief description of drawings]

FIG. 1 is a partially exploded vertical sectional view of a shoulder belt anchor adjusting device according to an embodiment of the present invention.

2 is an exploded partial sectional front view of the shoulder belt anchor adjusting device shown in FIG. 1. FIG.

FIG. 3 is an exploded partial sectional front view of the shoulder belt anchor adjustment device shown in FIG.

4 is a sectional view of the shoulder belt anchor adjusting device shown in FIG. 1, taken along the line AA.

5 is a cross-sectional view of the shoulder belt anchor adjusting device shown in FIG. 1, taken along the line BB.

FIG. 6 is an enlarged vertical cross-sectional view of main parts of the shoulder belt anchor adjusting device shown in FIG.

FIG. 7 is an enlarged vertical cross-sectional view of essential parts of the shoulder belt anchor adjusting device shown in FIG.

[Explanation of symbols]

 1 Shoulder belt anchor adjusting device 2 Slide base 2a Support hole 3 Slider 4 Sliding member 5 Sleeve nut 6 Lock pin 7 Lock release lever 7a Operating piece 7b Pressing part 8 Return spring 9 Bolt 10 Lower garnish 11 Locking hole 11a Inclined surface 12 Bolt 13 Operation Button 14 Lower Cover 15 Countersunk Screw 16 Upper Garnish 17 Guide Rail 18 Return Spring 19 Slide Piece 21 Through Anchor 22 Webbing 23 Cover 24 Tapping Screw 25 Cam Plate 27 Upper Cover 42 Through Anchor Assembly

Claims (1)

[Scope of utility model registration request] 1. A guide rail having a plurality of locking portions, a slide base movable along the guide rail, and a through hole of the slide base to engage with the locking portion of the guide rail. By doing so, a lock member that can prevent the slide base from moving, a spring that constantly urges the lock member in the locking direction, and one end of which engages with the lock member and is rotatably supported at an intermediate portion. Lock release lever,
A collar member that is in contact with the other end of the lock release lever and is movable along the axial direction of the bolt fixed to the slide base, and a through anchor that is swingably attached to the bolt and supports the webbing. A shoulder belt anchor adjusting device having an operating means for rotating the lock release lever in the lock release direction by moving the collar member in the bolt axial direction, wherein the lock release lever is elastically flexible. And a swingable stroke amount of one end of the lock release lever that rotates in accordance with the movement of the operating means is set to be larger than the movable stroke amount of the lock member. Shoulder belt anchor adjustment device featuring.