JPH08142795A - Adjustable shoulder belt supporting device - Google Patents

Abstract

PURPOSE: To carry out the vertical shift in the height adjustment smoothly and quietly, by installing a pair of hook parts for allowing the shift in the vertical direction by being positioned inside an engagement projection in the approach of a pair of arm parts, and installing a spring member which is shifted in the vertical direction, together with a slide member. CONSTITUTION: In the state before the vertical adjustment, a pair of arm parts 70 of a spring member 16 are separated in the vehicle longitudinal direction by the spring force of itself, and a hook part 72 installed at the top end of the arm part 70 is engaged with the engagement projection 34 of a rail member 12. Each downward shift of the spring member 16 and a slide member 18 is suppressed, and a shoulder belt is supported at the supporting height corresponding to the height position of the slide member 18. When the supporting height of the shoulder belt is adjusted downward, the upper end part of the slide member 18 is pushing-in-operated so as to intrude inside the rail member 12 by tilting the anchor member 22 or the direct pressing from over a resin cover 26, and the attitude of the slide member 18 is changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoulder belt supporting device for restraining an occupant to a seat in a vehicle, and more particularly,
The present invention relates to an improved adjustable shoulder belt support device capable of vertically adjusting its support height.

[0002]

2. Description of the Related Art As a safety belt for restraining an occupant to a seat in a passenger compartment, a shoulder belt which is stretched around the occupant's shoulders and hips in a plow shape is widely used. Such a shoulder belt is designed to be supported by being anchored on an anchor member of a supporting device arranged on the upper side surface of the passenger compartment. In addition, the slide member to which the anchor member is attached is disposed so as to be movable in the vertical direction with respect to the rail member integrally provided on the side surface in the vehicle compartment, and the slide member is arranged at a plurality of positions in the vertical direction. There is an adjustable shoulder belt support device in which the supporting height of the shoulder belt can be arbitrarily adjusted according to the physique of an occupant by positioning.

The device described in Japanese Utility Model Laid-Open No. 62-59549 is an example of such a device. A rail member having a rectangular cross section with a hollow cross section is provided with slits and a plurality of engaging projections in the vertical direction, while the rail is provided. The slide member movably arranged in the member is provided with a claw portion, and the claw portion is engaged with the engaging projection to position the slide member immovably in the vertical direction. The slide member is provided with a leaf spring for urging so as to maintain the engagement state between the claw portion and the engaging protrusion between the rail member and the claw portion when adjusting the height of the anchor member. The posture of the slide member is changed against the biasing force of the leaf spring so that the slide protrusion is disengaged, and the slide member is moved vertically as it is.

On the other hand, even if a strong impact load is applied to the adjustable shoulder belt support device via a shoulder belt at the time of a vehicle collision or the like,
Since the strength that can withstand this is required, the rail member, slide member, etc. are usually made of a strong metal such as steel.

[0005]

However, in the above-mentioned conventional adjustable shoulder belt support device, the slide member and the leaf spring are brought into contact with the rail member, and when the posture of the slide member is changed, the leaf spring is generated. Since it is configured to be pressed against the rail member, when adjusting the height up and down as described above, slide the metals while they are pressed by the contact pressure corresponding to the biasing force of the leaf spring. Therefore, there is a problem in that the movement during adjustment is not always smooth and an unpleasant noise such as a scratching noise is generated. This problem can be solved to some extent by finishing both members that move relative to each other with high dimensional accuracy, but doing so would increase the cost significantly.

On the other hand, in the conventional apparatus, it is necessary to change the posture of the slide member in order to release the engagement between the claw portion and the engagement protrusion, when adjusting the up or down direction, especially in the upward direction. In addition to preventing prying between the slide member and the rail member while changing the posture of the slide member, the slide member is lifted upward against the belt tension acting on the anchor member. It was necessary to do, and the operation was troublesome compared to the downward adjustment.

The present invention has been made in view of the above circumstances. An object of the present invention is to provide an operation capable of smoothly moving up and down during height adjustment while having sufficient impact resistance. (EN) An inexpensive adjustable shoulder belt support device is provided at low cost.

[0008]

In order to achieve such an object, the first invention is arranged in an upper part of a side surface of a vehicle interior,
An adjustable shoulder belt supporting device capable of supporting a shoulder belt for restraining an occupant to a seat and adjusting a supporting height thereof, wherein (a) a lateral cross section has a hollow quadrangular shape, and A rail member that is integrally provided in the up-down direction and has a slit in the up-down direction on the inner flat plate portion located inside the vehicle interior,
(B) A main body having a width larger than the slit, and integrally provided on both sides of the main body, and the height in a direction substantially perpendicular to the main body becomes smoother from the lower end toward the upper end. A pair of smaller side wall portions, the main body portion being located on the inner flat plate portion side, and the upper end portion being movable vertically in the hollow of the rail member with a predetermined play in the vehicle width direction. The slide member to be disposed, and (c) the state in which it is interposed between the rail member and the slide member and slidably contacts the four inner wall surfaces of the rail member to constrain the posture to be substantially constant, A sliding member made of synthetic resin that can be vertically moved in the hollow of the rail member together with the slide member; and (d) a connecting portion provided in the main body portion of the slide member and protruding from the slit into the vehicle compartment. And (e) an anchor member attached to the tip of the connecting member and through which the shoulder belt is hung, and (f) a sawtooth shape that smoothly inclines toward the slit side as it goes upward. A plurality of engaging projections symmetrically provided on both sides of the slit along the slit in the inner flat plate portion of the rail member,
(G) An engaging portion that is engaged with the inside of the pair of side wall portions at a lower end portion of the slide member near the inner flat plate portion so as to be relatively rotatable about an axis in the vehicle longitudinal direction. , Each of which extends upward from both ends of the hooking portion, and the tip end is brought into contact with the outer flat plate portion opposite to the inner flat plate portion via the sliding member, and is separated in the vehicle front-rear direction by its own spring force. By doing so, it is engaged so as to intersect with the pair of side wall portions and urges the slide member in a direction in which the upper end portion thereof approaches the inner flat plate portion, while the upper end portion of the slide member is set to the rail. When pushed into the member, the pair of arm portions have their tip portions brought closer to each other by engagement with the side wall portions, and the tip portions of the pair of arm portions are bent so as to be substantially perpendicular to the inner flat plate portion. With The tip portion protrudes from the slit, and when the pair of arm portions are separated, they are engaged with the engaging protrusions to prevent downward movement, but when the pair of arm portions approach each other, they are located inside the engaging protrusions. A pair of claws that are positioned to allow vertical movement, and a spring member that is movable in the vertical direction together with the slide member.

[0009]

In such an adjustable shoulder belt support device, the pair of arm portions of the spring member are separated from each other in the vehicle front-rear direction by their own spring force, and the claw portion provided at the tip of the arm portion engages with the rail member. By engaging with the mating protrusion, downward movement of the spring member and the slide member is prevented, and the shoulder belt is supported at a support height corresponding to the height position of the slide member. At this time, the slide member is held in a posture in which the upper end portion approaches the inner flat surface portion of the rail member due to the engagement between the arm portion of the spring member and the side wall portion.

When adjusting the support height of the shoulder belt downward, first, the anchor member is tilted or the like so that the upper end portion of the slide member is pushed into the inside of the rail member to change the posture of the slide member. Let Since the side wall portion of the slide member is engaged with the arm portion of the spring member, it is necessary to push the upper end portion of the slide member against the biasing force of the spring member. Along with this, the pair of arm portions of the spring member are brought closer to each other, the pair of claw portions are positioned inside the engagement protrusions of the rail member and their engagement is released, and the spring member and the slide member are moved up and down. Is acceptable. Therefore, the slide member and the spring member can be moved downward by keeping the posture of the slide member as it is and pulling down the anchor member. The slide member returns to the original posture according to the urging force of, and the claw portions of the spring member are separated from each other to be engaged with the engaging protrusions of the rail member, so that the shoulder belt is supported at the new height position.

On the other hand, when the support height of the shoulder belt is adjusted upward, the slide member is similarly pushed in to release the engagement between the claw portion and the engaging projection, and then the anchor member is lifted upward. The slide member and the spring member may be moved upward, and in that state, the pushing operation force of the slide member may be loosened so that the claw portion and the engagement protrusion are engaged with each other. Even if only the anchor member is pushed upward without moving, the pair of claw portions of the spring member move over the engaging projections while being brought close to each other according to the saw-tooth-shaped engaging projections, and the supporting height of the shoulder belt can be adjusted upward. It is possible.

The height adjusting pitch of the slide member matches the pitch of the engaging projections, but the engaging projections have a saw-tooth shape that smoothly inclines toward the slit as it goes upward, so Even if the claw portion of the member is engaged with the sawtooth-shaped inclined portion, the claw portion is locked by the engaging protrusion while moving downward by a predetermined dimension smaller than the pitch, and further downward movement is prevented. . Therefore, the operation amount for moving the slide member up and down does not necessarily have to be an integral multiple of the adjustment pitch. Further, when the slide member is brought closer to the inner flat plate portion of the rail member according to the urging force of the spring member, another claw portion (second claw portion) engaged with a notch or the like formed in the rail member is formed. If the second claw of the spring member is provided on the slide member and the second claw of the spring member is engaged with the rail member to prevent the slide member from moving downward, the shoulder belt support height is increased. Also when adjusting the height upward, it is necessary to push in the slide member to release the engagement between the both claw portions and the rail member as in the case of adjusting the height downward.

[0013]

EFFECTS OF THE INVENTION Here, between the rail member and the slide member, the hollow inside of the rail member together with the slide member is slidably in contact with the four inner wall surfaces of the rail member so that the posture is substantially constant. Since a sliding member made of synthetic resin that can be moved in the vertical direction is interposed, the slide member that is also usually made of metal does not come into contact with the rail member that is usually made of metal, and the height adjustment is possible. The relative movement at the time is smoothly performed through the sliding member made of synthetic resin, and the generation of unpleasant noise such as rubbing noise is suppressed. Also with respect to the spring member, since the distal end portions of the pair of arm portions are brought into contact with the outer flat plate portion of the rail member via the sliding member, the movement is smooth and the generation of abnormal noise is suppressed. Also,
Since the sliding member made of synthetic resin is interposed in this way, the dimensional error is absorbed by the elastic deformation of the synthetic resin, the dimensional accuracy required for the rail member and the slide member is relaxed, and the device is inexpensive accordingly. Composed.

Further, while the pair of claw portions of the spring member engage with the plurality of engaging projections provided on the rail member to prevent the slide member from moving downward, the upper end portion of the slide member is at the upper end of the rail member. When it is pushed into the inside of the slide member, the pair of claw portions are positioned inside the engagement protrusions to release the engagement between the two and allow the slide member to move up and down. Since it is not necessary to provide another claw portion that directly engages with the rail member, and since such a spring member is easily composed of a wire spring or the like,
The structure can be simplified. Furthermore, when the downward movement of the slide member is prevented by only the pair of claw portions of the spring member,
Since the anchor member may be pushed up without pushing the slide member during the upward adjustment, the operation becomes easy.

[0015]

A second aspect of the present invention is the adjustable shoulder belt support device according to the first aspect of the present invention, which is (h) integrally provided on an upper end portion of the slide member and provided on the engaging protrusion. It is characterized in that it has an engaging portion for preventing the sliding member from moving downward by being brought into contact with the engaged claw portion from above.

[0016]

In this case, in this case, the load of the slide member is directly transmitted from the engaging portion to the claw portion, and is also transmitted from the claw portion to the rail member, so that the arm portion of the spring member, etc. The rail member reliably receives a large impact load applied to the slide member from the shoulder belt in the event of a vehicle collision, while the slide member is provided with another claw portion that directly engages with the rail member. It is possible to easily secure the strength capable of withstanding the above-mentioned load without increasing the mechanical strength required for the spring member. That is, in carrying out the first aspect of the invention, the slide member and the spring member may be engaged with each other via the latching portion of the spring member so as to be relatively immovable in the vertical direction. Since the load applied to the hooking part is transmitted to the claw via the arm, the spring member has a high mechanical force so that the claw does not come off the engagement protrusion of the rail member due to elastic deformation of the arm. Strength is required.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 are front views showing the adjustable shoulder belt supporting device 10 according to an embodiment of the present invention with a part cut away when viewed from the inside of a vehicle compartment 74, and viewed from the left side of FIG. It is a side view which notches and shows a part. The adjustable shoulder belt support device 10 is disposed above the side surface 76 in the vehicle compartment 74, supports a shoulder belt (not shown), and can adjust the support height up and down arbitrarily according to the physique of an occupant. 3, each component shown in the state before assembly in the perspective view of FIG. 3, that is, the rail member 12, the shoe 14, the spring member 1
6, slide member 18, pin 20, anchor member 22,
The bolt 24 and the resin cover 26 are provided. The pin 20 is shown in a state in which it has been caulked and fixed to the slide member 18 in advance.

The rail member 12 has a hollow quadrangular cross section perpendicular to the longitudinal direction, and has mounting portions 28a and 28b at both ends thereof.
6, for example, the mounting portion 28 on the inner wall of the center pillar
It is integrally fixed in the vertical direction via a and 28b. The inner flat plate portion 30 located inside the vehicle compartment 74 of the fixed rail member 12 should be cut out so that the inner flat plate portion 30 is symmetrically bisected with respect to a center line parallel to the longitudinal direction. Due to this, the slit 32 is provided in the vertical direction in the arranged state. Then, on both sides of the slit 32, the slit 32 is continuously cut downward in a downward opening shape so as to form a sawtooth shape that smoothly inclines toward the slit 32 side as it goes upward. A plurality of engaging protrusions 34 are provided symmetrically so as to form a step.

The slide member 18 disposed in the rail member 12 is pressed into a substantially saddle shape, and has a main body portion 36 having a larger width than the slit 32, and the main body portion 36. A pair of side wall portions 38, 38 that extend integrally at substantially right angles from both side end portions of the main body 36, and that the height dimension in a substantially vertical direction from the main body portion 36 decreases smoothly from the lower end portion to the upper end portion in FIG. Is equipped with. More specifically, the width dimension of the lower end portion of the main body portion 36 is substantially the same as the width dimension of the hollow hole of the rail member 12 minus the gap dimension in which the shoe 14 is inserted, and goes toward the upper end. The cross section perpendicular to the vertical direction is substantially U-shaped at the lower end, but smoothly transitions to a hat shape with the legs open toward the upper end, as shown in FIG. At IV
As can be seen from FIG. 4, which is a sectional view taken along line IV, a pair of upper recessed inclined surfaces 40 inclined at a predetermined angle with respect to the main body portion 36,
40 is formed. On the other hand, at the lower end of the main body 36,
Rotation of the spring member 16 inside the pair of side wall portions 38 near the inner flat plate portion 30 of the rail member 12 in the vehicle front-rear direction, that is, in a direction substantially perpendicular to the plane of FIG. A U-shaped groove portion 42 is formed so as to hold it as much as possible.

As is apparent from FIG. 2, in the slide member 18 in the rail member 12, the main body portion 36 is located on the inner flat plate portion 30 side and the upper end portion is in the vehicle width direction, that is, the left and right direction in FIG. The pin 20 as a connecting member, which is held in a state having a predetermined play and is caulked and fixed to the main body portion 36 in advance, projects from the slit 32 of the rail member 12 into the vehicle compartment 74, and its tip end portion. The anchor member 22 is attached by fastening the bolt 24. The anchor member 22 is rotatable about the axis of the bolt 24 in the attached state, and has a locking portion in which an insertion hole 44 through which the shoulder belt is passed is formed at one end inclined toward the vehicle compartment 74. Four
6 is provided. The resin cover 26 is made of a relatively soft synthetic resin formed into a bag shape having a substantially semicircular shape when viewed from the front, and a partially extending mounting portion is shown in FIG.
As described above, the anchor member 22 is attached so as to be in close contact with the back surface thereof.

The shoe 14 corresponds to a sliding member, is made of synthetic resin, and has a rail member 12
And the slide member 18 are inserted. Shoe 14
Is a pair of side wall portions 52, 52, an upper wall portion 54, and a lower wall portion 56 substantially at right angles from the four sides of the base portion 50 along the outer flat plate portion 48 on the side opposite to the inner flat plate portion 30 of the rail member 12.
Respectively extend and a pair of side wall portions 52, 52
From this, a pair of flange wall portions 58, 58 extend substantially at right angles. Of these, the pair of flange wall portions 58,
58 is brought into sliding contact with the inner flat plate portion 30 of the rail member 12, and the pair of side wall portions 52, 52 are brought into slidable contact with the pair of side wall portions 60, 60 substantially perpendicular to the inner flat plate portion 30. Therefore, as is apparent from FIG. 4, the shoe 14 is in sliding contact with the four inner wall surfaces of the rail member 12 and its posture is constrained to be substantially constant. The lower wall portion 56 is engaged with the groove portion 42 of the slide member 18 as shown in FIG.

The pair of side wall portions 52, 52 of the shoe 14
On the other hand, a pair of inward engaging pins 62, 62 having a common axis in the vehicle front-rear direction are integrally formed. On the other hand, the pair of side wall portions 38, 38 of the slide member 18 have the groove portion 42. A pair of elongated holes 64, 64 are formed in an arc shape centered on the axial center of the vehicle front-rear direction, respectively, and when both members are assembled, the pair of engaging pins 62, 62 form a pair of elongated holes 64. , 64. Therefore, the upper end of the slide member 18 is allowed to rotate relatively to the shoe 14 so that the upper end of the slide member 18 approaches the base portion 50 side from the state of FIG. The parts are positioned in the vehicle width direction, that is, in the left-right direction in FIG.
By the engagement between the engagement pin 62 and the elongated hole 64 and the engagement between the lower wall portion 56 and the groove portion 42, the shoe 14 is moved vertically with the slide member 18 in the hollow of the rail member 12. Due to the presence of the shoe 14 made of synthetic resin, the sliding member 18, which is also made of metal, does not come into contact with the rail member 12 that is made of metal, and the relative movement between the two is performed smoothly, resulting in a scratching sound. It is hard to make an unpleasant noise. Further, since the dimensional error is absorbed by the elastic deformation of the synthetic resin, the rail member 12 and the slide member 18 are not required to have high dimensional accuracy. At the lower end of the rail member 12, as shown in FIG.
Is provided with a stopper 66 that is obliquely bent into the hollow of the slide member 1 with the lower wall portion 56 of the shoe 14 interposed therebetween.
By engaging with the groove 42 of No. 8, the slide member 18 is prevented from slipping out downward.

The spring member 16 is composed of a single wire for spring, and is engaged with the engaging portion 68 engaged with the groove portion 42 of the slide member 18, and upward from the opposite ends of the engaging portion 68 at substantially right angles. A pair of arm portions 70 extending to
70 and a pair of claw portions 72, 72 bent from the tips of the pair of arm portions 70, 70 so as to be substantially perpendicular to the inner flat plate portion 30 of the rail member 12, and the tip portions protruding from the slit 32. It has and. Since the hook portion 68 is hooked on the groove portion 42 such that the hook member 68 cannot move relative to the vertical direction, the spring member 16 is integrally moved in the vertical direction as the slide member 18 moves in the vertical direction.

The pair of arm portions 70, 70 have their tips abutted against the outer flat plate portion 48 of the rail member 12 via the base portion 50 of the shoe 14 and separated by the spring force of the arm portions in the vehicle longitudinal direction. Thus, the slide member 18 is engaged so as to intersect with the pair of side wall portions 38, 38, and the slide member 18 is urged in the direction in which the upper end portion approaches the inner flat plate portion 30 of the rail member 12. That is,
Since the pair of arm portions 70, 70 extend substantially parallel to each other, the pair of side wall portions 38, 38 of the slide member 18 have upper recessed shapes and are engaged so as to intersect each other. The posture of the slide member 18 is always held on the inner flat plate portion 30 side of the rail member 12 as shown in FIG. As long as the engagement between the side wall portion 38 and the arm portion 70 is maintained, the tip of the arm portion 70 has the outer flat plate portion 4.
The hooking portion 68 is held in the groove portion 42 of the slide member 18 by the reaction force of being pressed from the 8 side. Then, in the state where the pair of arm portions 70, 70 are separated from each other in this manner, the pair of claw portions 72, 72 are engaged with the engagement protrusions 34 of the rail member 12 so that the spring member 16 and the slide member 18 are lowered. To move to. By positioning the slide member 18 with respect to the rail member 12 in this manner, the shoulder belt can be supported via the anchor member 22 at a support height corresponding to the height position of the slide member 18.

On the other hand, when the anchor member 22 is tilted, the upper end of the slide member 18 is pushed into the rail member 12 as shown in FIGS. 5 and 6, that is, the rotation axis of the groove 42. When the slide member 18 is rotated around to the outer flat plate portion 48 side of the rail member 12, the pair of arm portions 70, 70 are engaged with the pair of side wall portions 38, 38, so that the pair of inclined surfaces 40, 40.
Is flexed and deformed inwardly along the direction, and the respective tips are brought closer to each other. In this way, the pair of arm portions 7
In the state where 0 and 70 are close to each other, the pair of claws 72 and 72 are moved to the inner position where they do not interfere with the engaging protrusions 34 of the rail member 12, so that the spring member 16 and the slide member 18 are not moved in the vertical direction. Permissible. Therefore, while the slide member 18 is moved up or down in such a position-releasing state, the claw portion 72 is engaged with one above or below the engaging projection 34 engaged before the movement. By doing so, the slide member 18 can be positioned at a desired height, and the support height of the shoulder belt can be changed. Since the arm portion 70 of the spring member 16 is engaged with the side wall portion 38 via the inclined surface 40, the arm portion 70 is smoothly bent and deformed as the slide member 18 rotates, and wear is reduced. Generation of scratching noise is suppressed.

Since the engaging projections 34 are provided so as to have a sawtooth shape that smoothly inclines toward the slits 32 as they go upward, the slide member 18 is pushed into the rail member 12 as described above. If you push it upwards without pressing, the spring member 16
Of the pair of claws 72, 72 of the sawtooth-shaped engaging projection 34.
Accordingly, the engaging projections 34 can be overcome while being brought close to each other, and the upper engaging projections 3
The claw portion 72 can be engaged with 4. In this embodiment, since the slide member 18 is not provided with any other claw portion or the like that engages with the notch or the like formed in the rail member 12 and is disengaged by the pushing operation of the slide member 18, As described above, it is possible to raise the support height of the shoulder belt by pushing up the slide member 18 as it is from the normal state.

Next, the operation of the adjustable shoulder belt support device 10 configured as described above will be described.

In the state before vertical adjustment, the pair of arm portions 70, 70 of the spring member 16 are separated from each other in the vehicle front-rear direction by their own spring force, and the claw portion 72 provided at the tip of the arm portion 70 is railed. By being engaged with the engagement protrusion 34 of the member 12, the downward movement of the spring member 16 and the slide member 18 is prevented, and the shoulder belt is supported at a support height corresponding to the height position of the slide member 18. Supported. At this time, the slide member 18 is held in a posture in which the upper end portion approaches the inner flat plate portion 30 of the rail member 12 by the engagement of the side wall portion 38 and the arm portion 70 of the spring member 16.

When the support height of the shoulder belt is adjusted downward, first, the anchor member 22 is tilted or directly pressed from above the resin cover 26 to slide the slide member 18.
The pushing operation is performed so that the upper end portion of the slide member 18 enters the inside of the rail member 12, and the posture of the slide member 18 is changed. Since the side wall portion 38 of the slide member 18 is engaged with the arm portion 70 of the spring member 16, the spring member 1
It is necessary to push the upper end portion of the slide member 18 against the urging force of the slide member 18, and the pair of arm portions 70 of the spring member 16 are accompanied by the push operation of the slide member 18.
Are brought close to each other, and the pair of claws 72 are connected to the rail member 1
2 are located inside the engagement protrusions 34 to release their engagement, and the spring member 16 and the slide member 1 are released.
Up and down movement of 8 is allowed. Therefore, if the anchor member 22 is pulled down while maintaining the posture of the slide member 18, the slide member 18 and the spring member 1
6 can be moved downward, and if the pushing operation force for the slide member 18 is loosened after the movement, the slide member 18 returns to its original posture according to the urging force of the spring member 16, and the claw portion of the spring member 16 is also returned. 72 is separated and engaged with the engagement protrusion 34 of the rail member 12, and the shoulder belt is supported at a new height position.

On the other hand, when the support height of the shoulder belt is adjusted upward, after the slide member 18 is similarly pushed in to release the engagement between the claw portion 72 and the engagement protrusion 34,
The anchor member 22 is lifted up to move the slide member 18 and the spring member 16 upward, and in this state, the pushing operation force of the slide member 18 is relaxed to engage the claw portion 72 and the engagement protrusion 34. However, even if the anchor member 22 is pushed up without pushing the slide member 18, the claw portion 72 of the spring member 16 gets over the serrated engagement projection 34, so that the shoulder belt support height is increased. Can be adjusted upwards.

The height adjusting pitch of the slide member 18 matches the pitch of the engaging projection 34, but the engaging projection 34 has a saw-tooth shape that smoothly inclines toward the slit 32 as it goes upward. Therefore, even if the claw portion 72 of the spring member 16 is engaged with the sawtooth-shaped inclined portion, the claw portion 72 is locked to the engagement protrusion 34 while moving downward by a predetermined dimension smaller than the pitch, Further decline is blocked. Therefore, the operation amount for moving the slide member 18 up and down does not necessarily have to be an integral multiple of the adjustment pitch.

Here, the rail member 12 and the slide member 1
Between the sliding member 18 and the slide member 18, which is vertically movable in the hollow of the rail member 12 in a state in which the rail member 12 slidably contacts the inner wall surfaces of the rail member 12 in four directions. Since the shoe 14 is interposed,
Similarly, the metal slide member 18 does not come into contact with the metal rail member 12, and the relative movement during height adjustment is smoothly performed through the shoes 14, so that unpleasant noise such as rubbing noise is generated. Occurrence is suppressed. Spring member 16
As for the pair of arm portions 70,
Since it is brought into contact with the outer flat plate portion 48 of the rail member 12 via the, the movement is smooth and the generation of abnormal noise is suppressed.
Further, since the synthetic resin shoe 14 is interposed in this manner, the dimensional error is absorbed by the elastic deformation of the synthetic resin, and the dimensional accuracy required for the rail member 12 and the slide member 18 is alleviated. The device is inexpensively constructed.

Further, the pair of claw portions 7 of the spring member 16
2, 72 are engaged with a plurality of engagement protrusions 34 provided on the rail member 12 to prevent the slide member 18 from moving downward, while the upper end of the slide member 18 is positioned at the rail member 1
When it is pushed into the inside of 2, the pair of claws 72, 72 are positioned inside the engagement protrusion 34, the engagement between them is released, and the vertical movement of the slide member 18 is allowed. Therefore, it is not always necessary to provide the slide member 18 with another claw portion that directly engages with the rail member 12, and the spring member 16 is easily composed of a wire rod for spring, so that the structure can be simplified. In this embodiment, since the slide member 18 is prevented from moving downward only by the pair of claws 72 of the spring member 16, the anchor member 22 does not need to be pushed in when the slide member 18 is adjusted upward. Since it suffices to push up,
Easy to operate.

Next, another embodiment of the present invention will be described. The same parts as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the adjustable shoulder belt support device 80 shown in the left side view with a part cut away in FIG. 7, the slide member 88 is inserted into the locking hole 84 formed in the rail member 82 via the second claw portion 86. It is configured to be directly engaged. As shown in FIG. 8, the slide member 18
Similarly to the main body portion 36, the pair of side wall portions 38, and the groove portion 42.
The slide member 88 having substantially the same shape, including
The pair of side walls 38, 38 are provided with a pair of hook-shaped claws 86, 86 that are integrally bent from the ends on the upper end side and extend to the same side as the pin 20. In addition, as shown in FIG. 9, the rail member 82 having the substantially same shape as the rail member 12 including the inner flat plate portion 30, the slit 32, the engaging protrusion 34, and the side wall portion 60 has an inner side. A plurality of locking holes 84 are provided in the flat plate portion 30 in the vicinity of the outside of the engagement protrusion 34, and guide portions 90 are provided above the plurality of locking holes 84, respectively. The shoe 1 is provided in the hollow of the rail member 82.
4 and the spring member 16 are arranged in the same manner as in the above-described embodiment, and the arm portion 70 of the spring member 16 is provided.
Is engaged with the side wall portion 38 of the slide member 88 so as to intersect with the side wall portion 38, and the claw portion 72 has the rail member 8
It is adapted to be engaged with the second engaging projection 34.

As shown in FIG. 7, when the upper end of the slide member 88 is held by the biasing force of the spring member 16 so as to approach the inner flat plate portion 30 of the rail member 82, the claw portion 86 of the slide member 88 is fixed to the rail member. 82 locking hole 84
And the claw portion 72 of the spring member 16 engaged with the engagement protrusion 34 is prevented from moving downward together with the slide member 88. In the present embodiment, when the support height of the shoulder belt is adjusted downward, the slide member 88 is pushed into the rail member 82 by inclining the anchor member 22, and the claw portion 72 of the spring member 16 is engaged. At the same time as moving the inside of the protrusion 34, the claw portion 86 of the slide member 88 is pulled out from the locking hole 84 so that the spring member 16 and the slide member 88 are allowed to move up and down. Hold and move downward. After the movement, the pushing operation force is relaxed to return the posture of the slide member 88, the claw portion 72 of the spring member 16 is engaged with the engagement protrusion 34, and the claw portion 86 of the slide member 88 is engaged with the locking hole 84. On the other hand, when the height position of the shoulder belt is adjusted upward, similarly, the slide member 88 is pushed in to release the engagement of the claw portion 72 and the claw portion 86, and the anchor member 22 is lifted. Become. At this time, even if the operation force for pushing the slide member 88 is not sufficient, the claw portion 86 of the slide member 88 abuts the guide portion 90 and is guided to rotate inward of the rail member 82. The operation is easier than in the case where only the locking holes 84 are provided.

In the adjustable shoulder belt supporting device 100 shown in the left side view in FIG. 10, the slide member 108 is directly engaged with the notch 104 formed in the side surface of the rail member 102 via the second claw portion 106. Is configured. As shown in FIG. 11, the slide member 108 having the body portion 36, the pair of side wall portions 38, the groove portion 42, and the like and having substantially the same shape as the slide member 18 has a pair of side wall portions 38, 38. There are provided a pair of hook-shaped claw portions 106, 106 extending laterally from the end portion on the upper end side as is. Further, as shown in FIG. 12, the rail member 102 having the inner flat plate portion 30, the slit 32, the engaging protrusion 34, the side wall portion 60, and the like and having substantially the same shape as the rail member 12 has
A pair of notches 10 is formed in the vertical direction on the pair of side wall portions 60, 60.
4, 104 are provided respectively, and each notch 1
On the inner flat plate portion 30 side of 04, a plurality of engaging projections 110 having a saw-tooth shape that is smoothly inclined toward the notch 104 side as it goes upward are provided. The shoe 14 and the spring member 16 are arranged in the hollow of the rail member 102 in the same manner as in the above-described embodiment, so that the arm portion 70 of the spring member 16 intersects the side wall portion 38 of the slide member 108. The claw portion 72 is adapted to be engaged with the engagement projection 34 of the rail member 102.

The upper end portion of the slide member 108 is moved to the rail member 102 by the biasing force of the spring member 16 as shown in FIG.
In the state of being held in a posture of approaching the inner flat plate portion 30 of the rail member 10, the claw portion 106 of the slide member 108 is
2 is engaged with the engagement protrusion 110 of the second engagement protrusion 3
The downward movement of the slide member 108 is prevented together with the claw portion 72 of the spring member 16 engaged with No. 4. In the present embodiment, when the support height of the shoulder belt is adjusted downward, the slide member 108 is pushed into the rail member 102 by inclining the anchor member 22, and the like.
The pawl portion 72 of the spring member 16 is moved to the inside of the engagement protrusion 34, and at the same time, the pawl portion 106 of the slide member 108 is moved to the outside (back) of the engagement protrusion 110 to vertically move the spring member 16 and the slide member 108. After the state is allowed, the slide member 108 is held in the same posture and moved downward. After the movement, the pushing operation force is relaxed to return the posture of the slide member 108, the claw portion 72 of the spring member 16 is engaged with the engagement protrusion 34, and the claw portion 106 of the slide member 108 is engaged with the engagement protrusion 110. On the other hand, when the height position of the shoulder belt is adjusted upward, the slide member 108 is similarly pushed in to release the engagement of the claw portion 72 and the claw portion 106 and lift the anchor member 22. Become.
At this time, even if the anchor member 22 is lifted without pushing the slide member 108, the claw portion 106 of the slide member 108 has a saw-toothed engagement protrusion 110.
The slide member 108 slides in contact with the inclined portion of the rail member 1
Since it is rotated inward of 02, the slide member 108 can be moved relatively smoothly upward, and the operation is easy.

In each of the embodiments shown in FIGS. 7 to 9 and FIGS. 10 to 12, in addition to the engagement between the claw portion 72 of the spring member 16 and the engagement protrusion 34, the slide members 88 and 108 are provided. The second claw portions 86 and 106 are the rail members 82,
Since the sliding members 88 and 108 are prevented from moving downward by being engaged with the hooking holes 84 and the engaging protrusions 110 provided in the shoulder belt 102, the shoulder belts are provided in the event of a vehicle collision or the like. From slide member 88,1
A large impact load applied to the rail 08, rail members 82, 1
02, the mechanical strength required for the spring member 16 is reduced.

FIG. 13 is a left side view showing a partially cutaway view of an adjustable shoulder belt support device 120 according to an embodiment of the second invention, and FIG. 14 is a perspective view of a slide member 122 in this embodiment. is there. Inside the hollow of the rail member 12, the shoe 14 and the spring member 16 are arranged together with the slide member 122. Similar to the slide member 18, the slide member 122 having the body portion 36, the pair of side wall portions 38, the groove portion 42 and the like and having substantially the same shape extends further upward from the upper end of the body portion 36 and extends to both sides. A pair of projecting cantilever-shaped engaging portions 124, 124 are provided. The pair of engaging portions 124, 124 are moved by the biasing force of the spring member 16 as shown in FIG.
When the upper end of 2 is held in a posture in which it approaches the inner flat plate portion 30 of the rail member 12, it is possible to abut against the claw portion 72 of the spring member 16 engaged with the engaging protrusion 34 from above. Yes, the load from the slide member 122 is directly transmitted from the engaging portion 124 to the claw portion 72, and
From the claw portion 72 through the engaging protrusion 34, the rail member 12
Is transmitted to

Therefore, the arm 70 of the spring member 16 is hardly loaded, and a large impact load applied from the shoulder belt to the slide member 122 at the time of a vehicle collision can be reliably received by the rail member 12. It is possible to easily secure the strength capable of withstanding the load without providing another claw portion that directly engages with the rail member 12 on the slide member 122, and reduce the mechanical strength required for the spring member 16. . That is, in the embodiment of FIGS. 1 and 2, the slide member 18 and the spring member 16 are engaged with each other via the hooking portion 68 of the spring member 16 so as to be relatively immovable in the vertical direction. In this case, the load applied from the slide member 18 to the hook portion 68 is transmitted to the claw portion 72 via the arm portion 70, so that the claw portion 72 is engaged with the rail member 12 by elastic deformation of the arm portion 70 or the like. The spring member 16 is required to have high mechanical strength so as not to come off from the protrusion 34. In addition, the claw portion 72 of the spring member 16 in the present embodiment, in order to avoid interference with the engaging portion 124 when the slide member 122 is pushed in,
Part of the groove 42 is bent in an arc shape centered on the rotation axis. In addition, the upper wall portion 54 of the shoe 14
The extension dimension of is reduced.

Here, in the above embodiment, since the spring member 16 is engaged with the groove portion 42 such that the spring member 16 cannot move relative to the vertical direction, it is interposed between the claw portion 72 of the spring member 16 and the engaging portion 124. The play is inevitable, and the claw portion 72 is elastically deformed so as to be engaged with the engaging portion 124. However, there is a vertical movement between the groove portion 42 and the hook portion 68 of the spring member 16. Direction play is provided, and the spring member 16 and the slide member 122 are moved relative to each other in the vertical direction, whereby the engaging portion 124 is moved to the claw portion 72.
Can also be engaged.

Although some embodiments of the present invention have been described in detail with reference to the drawings, the present invention can be implemented in other modes.

For example, in the above-described embodiment, the mounting member 28 is the rail member 12 or the like having a rectangular cross section with a hollow cross section in a single state.
Although it is fixed to the center pillar or the like of the vehicle body via a and 28b, the rail member can be integrally formed by using the center pillar as it is. In that case, a plate member as an inner flat plate portion or an outer flat plate portion may be fixed by welding or the like to form a hollow hole having a square cross section.

Further, in the above embodiment, the spring member 16
While the pair of arm portions 70, 70 of the slide member 18 extend substantially parallel to each other, the pair of side wall portions 38, 3 of the slide member 18, etc.
8 are formed in the shape of an upper recess and are engaged with each other so as to intersect with each other, but since the pair of arms 70, 70 may be brought close to each other when the slide member 18 is pushed in, for example, the pair of side walls 38. May be made parallel to each other, and the pair of arm portions 70, 70 may be formed with their tip portions open.

Further, although the inclined surface 40 is provided on the side wall portion 38 so that the spring member 16 can be elastically deformed smoothly, the inclined surface 40 is not necessarily provided, and it may be omitted. Absent.

Further, in the above-mentioned embodiment, the slit 32 is continuously cut out in a downward opening shape to provide the engaging projection 34 so as to form the step portion at a predetermined pitch. It is also possible to separately prepare a member having an engaging protrusion formed in a shape and fix it to the rail member by welding or the like.

Further, in the above embodiment, the sliding member 18 is provided with the engaging pin 62 provided on the side wall portion 52 of the shoe 14 and fitted into the elongated hole 64 of the sliding member 18 or the like.
Etc. are positioned in the vehicle width direction, but various positioning means such as, for example, providing a wall portion abutting the lower end side outer peripheral end of the side wall portion 38 of the slide member 18 on the shoe 14 side. It can be configured in the form of.

In the above embodiment, the slide member 18 or the like can be pushed into the rail member 12 or the like by tilting the anchor member 22 or pressing it from above the resin cover 26, but separately. The prepared operation member dedicated to the positioning release may be provided integrally with the slide member 18 or the like.

Although the slide member 122 is provided with the cantilever-shaped engaging portion 124 in the embodiment of FIG. 13, the claw portion 72 of the spring member 16 can be inserted into the extension portion of the main body portion 36. It is also possible to form an elongated hole and configure the engaging portion so that the inner peripheral surface of the elongated hole contacts the claw portion 72.

Although not illustrated one by one, the present invention can be implemented in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of drawings]

FIG. 1 is a front view illustrating the configuration of an adjustable shoulder belt support device that is an embodiment of the first invention.

FIG. 2 is a left side view of the apparatus of FIG. 1 with a part cut away.

FIG. 3 is a perspective view showing a state before assembling of respective parts constituting the apparatus of FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a cross-sectional view showing a state where the slide member is pushed in the apparatus of FIG. 1, and is a view corresponding to FIG.

6 is a left side view showing a state where the slide member is pushed in in the apparatus of FIG. 1. FIG.

FIG. 7 is a cross-sectional view showing another embodiment of the first invention as seen from the left side surface side.

8 is a perspective view showing a slide member in the apparatus shown in FIG.

9 is a perspective view showing a rail member in the apparatus of FIG.

FIG. 10 is a left side view showing still another embodiment of the first invention.

11 is a perspective view showing a slide member in the apparatus of FIG.

12 is a perspective view showing a rail member in the device of FIG.

FIG. 13 is a sectional view as seen from the left side surface side showing an embodiment of the second invention.

14 is a perspective view showing a slide member in the apparatus of FIG.

[Explanation of symbols]

10, 80, 100, 120: Adjustable shoulder belt support device 12, 82, 102: Rail member 14: Shoe (sliding member) 16: Spring member 18, 88, 108, 122: Sliding member 20: Pin (connecting member) 22 : Anchor member 30: Inner flat plate part 32: Slit 34: Engaging protrusion 36: Main body part 38: Side wall part 48: Outer flat plate part 68: Hook part 70: Arm part 72: Claw part 74: Vehicle compartment 76: Side surface 124 : Engagement part

Claims (2)

[Claims] 1. An adjustable shoulder belt supporting device, which is disposed on an upper portion of a side surface in a vehicle compartment, supports a shoulder belt for restraining an occupant to a seat, and is capable of adjusting a supporting height thereof. A rail member that is formed in a quadrangular shape and is integrally provided in a vertical direction on a side surface inside the vehicle compartment, and has a vertical slit in an inner flat plate portion located inside the vehicle compartment, and a width dimension from the slit. And a pair of side wall portions which are integrally provided on both side portions of the main body portion and whose height dimension in a substantially vertical direction from the main body portion becomes smaller smoothly from the lower end portion to the upper end portion. A slide provided in the hollow of the rail member so as to be vertically movable while the main body portion is located on the inner flat plate portion side and the upper end portion has a predetermined play in the vehicle width direction. And a hollow of the rail member together with the slide member in a state in which the rail member is interposed between the rail member and the slide member and slidably contacts the four inner wall surfaces of the rail member to constrain the posture to be substantially constant. A sliding member made of synthetic resin that can be moved in the vertical direction; a connecting member that is provided in the main body portion of the sliding member and projects into the vehicle compartment from the slit; and a connecting member that is attached to the tip end portion of the connecting member. Anchor member on which the shoulder belt is passed, and symmetrically on both sides of the slit along the slit on the inner flat plate portion of the rail member so as to form a sawtooth shape that smoothly inclines toward the slit side as it goes upward. And a plurality of engaging projections provided in the front and rear sides of the vehicle on the inner side of the pair of side wall portions at the lower end portion of the slide member that is close to the inner flat plate portion. In the direction of the axis, the latching part is locked so as to be relatively rotatable, and extends upward from both ends of the latching part, and the tip part slides on the outer flat plate part opposite to the inner flat plate part. The slide member is abutted via a member and is separated in the vehicle front-rear direction by its own spring force, so that the slide member is engaged so as to intersect with the pair of side wall portions and the upper end portion of the slide member is the inner flat plate portion. A pair of arm portions whose tip portions are brought closer to each other by engagement with the side wall portion when the upper end portion of the slide member is pushed into the rail member while urging the pair of arm portions. The tip of the arm is bent so as to be substantially perpendicular to the inner flat plate, and the tip projects from the slit. When the pair of arms are separated from each other, they are engaged with the engaging projections to move downward. Impede movement However, the spring member is provided with a pair of claw portions that are positioned inside the engagement protrusion when the pair of arm portions approach each other and allow vertical movement, and a spring member that is moved vertically with the slide member. An adjustable shoulder belt support device comprising: 2. The downward movement of the slide member is prevented by abutting from above the claw portion integrally provided on the upper end portion of the slide member and engaged with the engagement protrusion. The adjustable shoulder belt support device according to claim 1, further comprising an engaging portion.