JP2023146873A - Anchor plate and vehicle seat - Google Patents

Abstract

To obtain an anchor plate that relaxes limitation of an attachment position and can suppress an increase in costs, and a vehicle seat.SOLUTION: A wire member 52 is directly fixed to an anchor plate 44. The wire member 52 can elastically deform along the same plane of the anchor plate 44. As described above, since the wire member 52 elastically deforms along the same plane of the anchor plate 44, interference with a component in the periphery of the lower part of the vehicle seat 10 is avoided. Limitation of an attachment position of the anchor plate 44 is relaxed. A degree of freedom of the attachment position of the anchor plate 44 is improved. Accordingly, according to the present embodiment, it is possible to obtain the anchor plate 44 that relaxes limitation of the attachment position and can suppress an increase in costs.SELECTED DRAWING: Figure 2

Description

The present invention relates to an anchor plate and a vehicle seat.

Patent Document 1 below describes a plate body (hereinafter referred to as "anchor plate body") having an opening into which a bolt attached to a vehicle body or a seat is inserted, and a spring plate (hereinafter referred to as "anchor plate body") attached to the anchor plate body. A technique related to an anchor plate having a "plate spring") is disclosed.

In this prior art, the leaf spring includes a pair of legs that overlap the side parts on both sides of the opening and are fixed to the side parts with rivets, a tie part that connects the pair of legs, and a tie part that extends from the tie part. and a guide lip.

On the other hand, the opening formed in the anchor plate main body has a large hole through which the bolt is inserted, and a narrow hole connected to the large hole. The tie portion of the leaf spring is formed across the narrow hole, and the guide lip of the leaf spring extends from the tie portion toward the large hole, and becomes anchored toward the tip in the extending direction. It is formed so as to be spaced apart from the plate body.

With the above configuration, in the prior art, the large hole of the anchor plate is inserted through the bolt fixed to the vehicle body, and the anchor plate is pulled up. Thereby, the head of the bolt slides along the anchor plate body, and the head of the bolt comes into contact with the guide lip. Further, when the anchor plate is pulled up, the tie part is elastically deformed in a direction away from the anchor plate main body, and the head of the bolt enters between the tie part and the anchor plate main body.

This causes the head of the bolt to pass through the tie and move to the lower end of the slot. At this time, the tie part is restored and the head of the bolt is prevented from moving back toward the large hole part. As a result, the anchor plate is irreversibly connected to the bolt.

Japanese Patent Application Publication No. 2018-127031

However, in the above-mentioned prior art, the plate spring must be fixed to the anchor plate body via rivets, which is troublesome and increases the number of man-hours when assembling the anchor plate, including the material cost for the rivets. The cost will increase accordingly.

Further, the guide lip of the leaf spring is formed to extend from the tie portion toward the large hole portion side, and to be spaced apart from the anchor plate main body toward the distal end side in the extending direction. When attaching the anchor plate to the bolt fixed to the vehicle body, the tie part is elastically deformed in the direction away from the anchor plate main body, so the guide lip further moves in the direction away from the anchor plate main body. Therefore, in order to avoid interference with parts around the anchor plate, the positions at which the anchor plate can be attached are limited.

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to obtain an anchor plate and a vehicle seat in which restrictions on the mounting position are relaxed and cost increases can be suppressed.

In order to solve the above problems, the anchor plate according to the invention according to claim 1 is provided on the outside in the vehicle width direction of a seat cushion on which an occupant is seated, and one end portion in the longitudinal direction of the seat belt is provided on the outside in the vehicle width direction. An anchor plate to be attached, comprising: an insertion portion formed on the anchor plate main body through which the head of a bolt fastened to a bracket provided on the outside in the vehicle width direction of the seat cushion can be inserted; and the anchor plate. formed in the main body, provided on the opposite side of the attachment part to which one end in the longitudinal direction of the seat belt is attached with the insertion part in between, connected to the insertion part and formed with a width smaller than the insertion part; A holding part that holds the neck of the bolt; a holding part that is directly fixed to the anchor plate body, protrudes toward the inside of the holding part, and is elastically deformable along the width direction of the holding part; The elastic member is widened when the neck of the bolt passes through the elastic member, and narrows after the neck of the bolt passes to restrict movement of the neck of the bolt in the direction of the insertion portion.

The anchor plate according to the invention described in claim 1 is provided on the outside in the vehicle width direction of a seat cushion on which an occupant is seated, and one end portion in the longitudinal direction of the seat belt is attached. The anchor plate includes an insertion part and a holding part formed in the anchor plate main body, and an elastic member is directly fixed to the anchor plate main body.

The insertion portion allows the head of a bolt fastened to a bracket provided on the outside of the seat cushion in the vehicle width direction to be inserted, and the holding portion holds the length of the seat belt with the insertion portion in between. It is provided on the opposite side of the attachment part to which one end in the longitudinal direction is attached, is connected to the insertion part, is formed with a width smaller than the insertion part, and holds the neck of the bolt.

Further, the elastic member protrudes toward the inside of the holding portion, and is elastically deformable along the width direction of the holding portion. Then, when the neck of the bolt passes through, the elastic member widens, and after the neck of the bolt passes, the elastic member narrows, restricting movement of the neck of the bolt in the direction of the insertion part.

In this way, in the present invention, the elastic member that allows the movement of the bolt or restricts the movement of the bolt is directly fixed to the anchor plate main body. For this reason, the attachment of the elastic member can be simplified, for example, compared to the case where the elastic member is fixed to the anchor plate main body via a fixing device such as a rivet or a screw. As a result, in the present invention, it is possible to reduce the number of man-hours when assembling the anchor plate, and it is possible to reduce the cost including the material cost for the fixture.

Further, in the present invention, the elastic member is elastically deformable along the width direction of the holding portion. That is, the elastic member can be elastically deformed along the same plane of the anchor plate.

Generally, an anchor plate to which one end portion of a seat belt is attached is provided on the lower side of a vehicle seat. Therefore, the anchor plate needs to be arranged so as not to interfere with parts and the like around the lower side of the vehicle seat.

As a comparative example, for example, when an elastic member is elastically deformed along the thickness direction of the anchor plate, the position at which the anchor plate is attached is limited to avoid interference with parts etc. around the lower side of the vehicle seat. Put it away.

In contrast, in the present invention, since the elastic member is elastically deformed along the same plane of the anchor plate, restrictions on the attachment position of the anchor plate are relaxed, and the degree of freedom in the attachment position of the anchor plate is improved.

The anchor plate according to a second aspect of the present invention is the anchor plate according to the first aspect of the invention, wherein the elastic member is formed of a linear member.

In the anchor plate according to the invention described in claim 2, since the elastic member is formed of a linear member, the linear member such as a wire can be shaped more freely than a plate member such as a leaf spring. It is possible to set it to .

In the anchor plate according to the invention according to claim 3, in the anchor plate according to the invention according to claim 1 or 2, the elastic member has a neck portion of the bolt that extends toward the inside of the holding portion. A narrow portion is formed that widens when the object passes through.

In the anchor plate according to the third aspect of the invention, the narrow portion is formed in the elastic member. This narrow portion protrudes toward the inside of the holding portion, and is formed so as to widen along the width direction of the holding portion when the neck of the bolt passes therethrough. The widening of the widened portion allows the bolt to move from the insertion portion to the holding portion.

Since the widened portion constitutes a part of the elastic member, the narrowed portion that is widened along the width direction of the holding portion when the neck of the bolt passes therethrough returns to its original state after the neck of the bolt passes therethrough. Thereby, the bolt held by the holding part is restricted from moving from the holding part to the insertion part.

In addition, by providing such a narrow portion in the elastic member, when the neck of the bolt passes through the narrow portion, a reaction force is obtained above and below the narrow portion, thereby increasing the rigidity of the elastic member. can be improved.

In the anchor plate according to the invention according to claim 4, in the anchor plate according to the invention according to claim 3, the narrow part is a first R part arranged on the insertion part side and formed in a substantially arc shape. , and a second R section disposed on the holding section side and formed in a substantially arc shape with a larger curvature than the first R section.

In the anchor plate according to the fourth aspect of the present invention, the narrow portion includes a first R portion and a second R portion. The first R section is arranged on the insertion section side and is formed in a substantially arc shape, and the second R section is arranged on the holding section side and is formed in an arc shape with a larger curvature than the first R section.

The narrow portion widens when the neck of the bolt passes through the narrow portion, and after the neck of the bolt passes, the narrow portion is set to restrict movement of the bolt from the holding portion to the insertion portion. Therefore, in the present invention, in the narrow portion, the curvature of the first R portion disposed on the insertion portion side and the curvature of the second R portion disposed on the holding portion side are changed.

When the neck of the bolt moves (locks) from the insertion part to the holding part, the smaller the curvature of the narrow part, the easier it is for the narrow part to widen through the neck. On the other hand, when the neck of the bolt moves from the holding part to the insertion part (unlocking movement), the larger the curvature of the narrow part, the more difficult it is for the narrow part to widen than when the lock moves. Therefore, in the present invention, the second R section located on the insertion part side is formed with a larger curvature than the first R part located on the holding part side.

In the anchor plate according to the invention described in claim 5, in the anchor plate according to the invention described in claim 4, the narrow portion has an inflection point with respect to at least the second R portion, and the narrow portion has an inflection point with respect to the first R portion. and the second R part, and further includes a third R part, which the neck of the bolt comes into contact with when the bolt passes.

In the anchor plate according to the fifth aspect of the present invention, the narrow portion further includes a third R portion with which the neck portion of the bolt comes into contact when the neck portion of the bolt passes through the anchor plate. The third R section has an inflection point relative to at least the second R section and connects the first R section and the second R section.

As described above, in the present invention, since the third R part that the neck of the bolt comes into contact with has an inflection point with respect to at least the second R part, when the elastic member widens, a reaction force is generated from at least the second R part side. As a result, the rigidity of the elastic member can be further improved.

The anchor plate according to the invention described in claim 6 is the anchor plate according to any one of claims 1 to 5, in which the elastic member includes a fixing member directly fixed to the anchor plate main body. A section is formed.

In the anchor plate according to the invention described in claim 6, the elastic member has the fixing part formed therein, and the elastic member is directly fixed to the anchor plate main body via the fixing part, so that, for example, the anchor plate The attachment of the elastic member can be simplified compared to the case where the elastic member is fixed to the main body via a fixing device such as a rivet or a screw.

The anchor plate according to the invention according to claim 7 is the anchor plate according to any one of claims 1 to 6, wherein the elastic member is formed of a linear member with an end, and the elastic member is formed of a linear member with an end. A first linear member that is folded back at the center in the longitudinal direction of the member and formed symmetrically with respect to a center line located at the center of the width direction of the anchor plate main body as an axis of symmetry, and the first linear member includes: a first fixing part that is directly fixed to the anchor plate main body; a large diameter part that is arranged on the insertion part side and formed in a substantially arc shape along the shape of the insertion part; a small diameter portion that is arranged in a substantially arc shape and has a diameter larger than the width of the holding portion and smaller than the insertion portion; and a large diameter portion that extends toward the inside of the holding portion. a first constricted part connecting the small diameter part, having an inflection point with respect to the large diameter part and the small diameter part, and with which the neck part of the bolt comes into contact when the neck part passes through; has been done.

In the anchor plate according to the invention as set forth in claim 7, the elastic member is a first linear member formed of a linear member with an end, and the first linear member is folded back at the center in the longitudinal direction; The anchor plate body is formed symmetrically with respect to a center line located at the center in the width direction of the anchor plate body as an axis of symmetry.

The first linear member includes a first fixing portion, a large diameter portion, a small diameter portion, and a first constriction portion.

The first fixing part is directly fixed to the anchor plate main body, and the large diameter part is disposed on the insertion part side and is formed in a substantially arc shape along the shape of the insertion part. Further, the small diameter portion is disposed on the side of the holding portion, has a larger diameter than the width of the holding portion, has a smaller diameter than the insertion portion, and is formed in a substantially arc shape. The first constriction portion projects toward the inside of the holding portion. Further, the first constriction connects the large diameter part and the small diameter part, and is formed with an inflection point with respect to the large diameter part and the small diameter part, so that when the neck of the bolt passes, the neck part comes into contact with the part. come into contact with

In this way, since the first constricted part that the neck of the bolt comes into contact with has an inflection point with respect to the large diameter part and the small diameter part, when the first linear member widens, the large diameter part and the small diameter part A reaction force is obtained from the first linear member, and the rigidity of the first linear member can be further improved.

In the anchor plate according to the invention according to claim 8, in the anchor plate according to claim 7, the first fixing portion is formed at both ends in the longitudinal direction of the first linear member, and the anchor plate is provided at both ends of the first linear member in the longitudinal direction. a pair of first engaging portions that are respectively engaged with a pair of first engaging holes formed on opposite sides of the holding portion with the insertion portion therebetween, and a longitudinal direction of the first linear member; and a second engaging part formed in the center of the anchor plate, disposed on the opposite side of the pair of first engaging parts, and engaged with the lower end of the anchor plate main body.

In the anchor plate according to the eighth aspect of the invention, the first fixing part includes a pair of first engaging part and second engaging part.

The pair of first engaging portions are formed at both longitudinal ends of the first linear member, and the pair of first engaging portions are formed on opposite sides of the holding portion with the insertion portion between them in the anchor plate main body. respectively engaged with the holes. Further, the second engaging portion is formed in the center portion of the first linear member in the longitudinal direction, and is disposed on the opposite side of the pair of first engaging portions to engage with the lower end portion of the anchor plate main body. be done.

That is, in the present invention, a pair of first engaging portions and a second engaging portion are provided with the first constricted portion connecting the large diameter portion and the small diameter portion being interposed therebetween, and the pair of first engaging portions and the second engaging portion are provided. The elastic member is directly fixed to the anchor plate body via the second engaging portion.

In this way, by providing the pair of first and second engaging parts for fixing the elastic member to the anchor plate main body with the first constricted part between them, the neck of the bolt can be fixed to the first constricted part. It is possible to prevent the elastic member from shifting relative to the anchor plate main body when passing through the anchor plate body.

The anchor plate according to the invention described in claim 9 is the anchor plate according to claim 7 or claim 8, in which the first constriction portion includes a first R portion forming a part of the large diameter portion and a first narrow portion forming a part of the large diameter portion. A second R part that forms part of the bolt, and an inflection point with respect to the first R part and the second R part, connects the first R part and the second R part, and when the neck of the bolt passes through. The device further includes a third R portion with which the neck abuts.

In the anchor plate according to the invention set forth in claim 9, the first constriction portion includes a first R portion, a second R portion, and a third R portion.

The first R section forms part of the large diameter part, and the second R part forms part of the small diameter part. The third R section has an inflection point relative to the first R section and the second R section and connects the first R section and the second R section, and when the neck of the bolt passes through the third R section, the third R section has an inflection point with respect to the first R section and the second R section. The neck abuts against it.

The anchor plate according to the invention according to claim 10 is the anchor plate according to any one of claims 1 to 6, wherein the elastic member is formed of a linear member with an end, and the elastic member is formed of a linear member with an end. A second linear member that is folded back at the center in the longitudinal direction of the member and formed symmetrically with respect to a center line located at the center of the width direction of the anchor plate body as an axis of symmetry, and the second linear member includes: a second fixing part that is directly fixed to the anchor plate main body; and a second fixing part that is arranged on the holding part side and has a diameter larger than the width of the holding part and smaller than the insertion part, and is formed in a substantially arc shape. a first circular arc portion provided on the outside of the first circular arc portion in the radial direction and forming an external shape of the second linear member; a second constricted portion that connects the first circular arc portion and the first external shape portion, is formed to have an inflection point with respect to the first circular arc portion, and is in contact with the neck portion of the bolt when the neck portion passes through; It is composed of:

In the anchor plate according to the invention as set forth in claim 10, the elastic member is a second linear member formed of a linear member with an end, and the second linear member is folded back at a central portion in the longitudinal direction; The anchor plate body is formed symmetrically with respect to a center line located at the center in the width direction of the anchor plate body as an axis of symmetry.

The second linear member is configured to include a second fixing portion, a first arc portion, a first outer shape portion, and a second constriction portion.

The second fixed part is directly fixed to the anchor plate main body, and the first circular arc part is arranged on the holding part side and has a diameter larger than the width of the holding part and smaller than the insertion part. It is formed in a substantially arc shape. A first outer shape portion is provided on the outside in the radial direction of the first circular arc portion, and the outer shape of the second linear member is formed by the first outer shape portion. The second constricted portion projects toward the inside of the holding portion. Further, the second constriction portion connects the first circular arc portion and the first outer shape portion. The second constricted portion is formed to have an inflection point with respect to the first circular arc portion, and the neck portion of the bolt comes into contact with the second constricted portion when the neck portion passes through the second constricted portion.

In this way, the second constricted part that the neck of the bolt comes into contact with has an inflection point with respect to the first circular arc, so that when the second linear member widens, a reaction force is exerted from the first circular arc. is obtained, and the rigidity of the second linear member can be further improved.

In the anchor plate according to the invention described in claim 11, in the anchor plate according to claim 10, the second fixing portion is formed at both ends in the longitudinal direction of the second linear member, and a pair of third engaging portions that are respectively engaged with a pair of second engaging holes formed in a lower end portion of the second engaging portion, and a diameter of the first circular arc portion that is formed continuously with the second constricted portion; and a pair of fourth engaging portions that are respectively engaged with a pair of side end portions of the anchor plate main body located on the outside of the direction.

In the anchor plate according to the eleventh aspect of the invention, the second fixing portion includes a pair of third engaging portions and a pair of fourth engaging portions.

The pair of third engaging portions are formed at both ends of the second linear member in the longitudinal direction, and are respectively engaged with the pair of second engaging holes formed at the lower end of the anchor plate main body. Ru. Further, the fourth engaging portion is formed continuously with the second constricted portion, and is respectively engaged with a pair of side end portions of the anchor plate body located on the radially outer side of the first circular arc portion.

That is, in the present invention, the second linear member is directly fixed to the anchor plate main body via the pair of third engaging parts and the pair of fourth engaging parts. In this way, by providing the pair of third engaging parts and the pair of fourth engaging parts that fix the second linear member to the anchor plate main body, when the neck of the bolt passes through the second constricted part, It is possible to prevent the second linear member from shifting with respect to the anchor plate main body.

The anchor plate according to the invention according to claim 12 is the anchor plate according to any one of claims 1 to 6, wherein the elastic member is formed of an endless linear member, and the anchor plate main body A third linear member is formed symmetrically with respect to an axis of symmetry about a center line located at the center in the width direction of a second circular arc portion formed in a substantially arc shape with a larger diameter than the insertion portion and a smaller diameter than the insertion portion; a second outer shape portion forming the outer shape of the third linear member; the second outer shape portion extends toward the inside of the holding portion, connects the second circular arc portion and the second outer shape portion, and is inflected with respect to the second circular arc portion; and a third constricted part formed with a point and with which the neck of the bolt comes into contact when the neck passes.

In the anchor plate according to the invention according to claim 12, the elastic member is a third linear member formed of an endless linear member, and the center line located at the center of the width direction of the anchor plate body is the axis of symmetry. It is formed symmetrically.

The third linear member is configured to include a second circular arc portion, a second outer shape portion, and a third constriction portion.

The second arcuate portion is disposed on the side of the holding portion, and is formed in a substantially arcuate shape with a diameter larger than the width of the holding portion and smaller than the insertion portion. Further, the second outer shape portion is provided on the outside of the second circular arc portion in the radial direction, and forms the outer shape of the third linear member. The third constriction portion projects toward the inside of the holding portion. Further, the third constriction connects the second circular arc portion and the second external shape portion, and is formed to have an inflection point with respect to the second circular arc portion, so that when the neck of the bolt passes, the neck portion come into contact with

In this way, since the third constricted part that the neck of the bolt comes into contact with has an inflection point with respect to the second circular arc part, when the third linear member widens, a reaction force is generated from the second circular arc part. is obtained, and the rigidity of the third linear member can be further improved.

The anchor plate according to the invention described in claim 13 is the anchor plate according to claim 12, wherein a housing part in which the second circular arc part and the second external shape part are stored is provided in the anchor plate main body. It is being

In the anchor plate according to the thirteenth aspect of the present invention, a housing portion is provided in the anchor plate main body, and the second circular arc portion and the second external shape portion are housed in the housing portion.

In this way, by providing the accommodating part for fixing the third linear member to the anchor plate main body, when the neck of the bolt passes through the third constriction part, the third linear member is fixed to the anchor plate main body. It can be suppressed so that it does not shift.

The anchor plate according to the invention according to claim 14 is the anchor plate according to claim 13, in which the anchor plate main body includes a first plate that constitutes a part of the anchor plate main body, and the other part of the anchor plate main body. a second plate that overlaps with the first plate to form the housing part between the second plate and the first plate; and a second plate formed in the housing part and between the second circular arc part and the second outer shape part; and a positioning part inserted into the third linear member to position the third linear member.

In the anchor plate according to the fourteenth aspect of the invention, the anchor plate main body includes a first plate, a second plate, and a positioning portion.

The first plate constitutes a part of the anchor plate body, and the second plate constitutes the other part of the anchor plate body. By overlapping the first plate and the second plate, a housing portion is formed between the first plate and the second plate. A positioning part is formed in this housing part, and the positioning part is inserted between the second circular arc part and the second outer shape part, thereby positioning the third linear member with respect to the anchor plate main body. .

In the vehicle seat according to the fifteenth aspect of the present invention, one longitudinal end of the seat belt is attached to the anchor plate according to any one of the first to fourteenth aspects.

In the vehicle seat according to the invention set forth in claim 15, it is possible to enjoy the effects obtained by the anchor plate set forth in any one of claims 1 to 14.

As described above, according to the present invention, it is possible to obtain an anchor plate and a vehicle seat in which restrictions on mounting positions are relaxed and cost increases can be suppressed.

FIG. 1 is a side view showing a vehicle seat to which the anchor plate according to the present embodiment is applied. FIG. 2 is an enlarged side view of a main part of a vehicle seat to which the anchor plate according to the present embodiment is applied. FIG. 3 is a front view of the anchor plate according to the first embodiment. It is a side view of the anchor plate concerning a 1st embodiment. It is a perspective view of the anchor plate concerning a 1st embodiment. FIG. 2 is an exploded perspective view of the anchor plate according to the first embodiment. It is a perspective view for explaining the action of the anchor plate concerning a 1st embodiment. It is a front view for explaining the action of the anchor plate concerning a 1st embodiment. It is a perspective view for explaining the action of the anchor plate concerning a 1st embodiment. FIG. 7 is a front view of an anchor plate according to a second embodiment. It is a side view of the anchor plate based on 2nd Embodiment. It is a perspective view of the anchor plate concerning a 2nd embodiment. It is an exploded perspective view of the anchor plate concerning a 2nd embodiment. It is a perspective view seen from the back side of the anchor plate concerning a 2nd embodiment. It is a perspective view for explaining the action of the anchor plate concerning a 2nd embodiment. It is a perspective view for explaining the action of the anchor plate concerning a 2nd embodiment. FIG. 7 is a front view of an anchor plate according to a third embodiment. FIG. 7 is a side view of an anchor plate according to a third embodiment. FIG. 7 is a perspective view of an anchor plate according to a third embodiment. FIG. 7 is an exploded perspective view of an anchor plate according to a third embodiment. It is a perspective view for explaining the action of the anchor plate concerning a 3rd embodiment. It is a perspective view for explaining the action of the anchor plate concerning a 3rd embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle seat according to an embodiment of the present invention will be described below with reference to the drawings. In addition, the arrow FR shown as appropriate in the following figures indicates the front direction of the vehicle longitudinal direction (the direction in which the seated person faces), the arrow UP indicates the upward direction of the vehicle vertical direction, and the arrow RH indicates the direction in the vehicle width direction. It shows the right direction. In the following, when explanations are simply made using front and rear, up and down, and left and right directions, unless otherwise specified, front and rear of the seat front and back, up and down of the seat up and down, and left and right of the seat width when facing the direction of travel of the vehicle. shall be shown.

<Configuration of vehicle seat>
First, the configuration of the vehicle seat according to this embodiment will be described.

As shown in FIG. 1, the vehicle seat 10 according to the present embodiment includes a seat cushion 12 on which an occupant sits, and a lower end portion connected to the rear end portion of the seat cushion 12 so that the occupant can sit on the seat cushion 12. A headrest 16 is attached to the upper end of the seatback 14.

Here, the seat cushion 12 includes a seat cushion frame (not shown) which is a skeleton member and has a substantially rectangular shape in plan view, and a seat cushion pad 18 is provided on the upper surface side of the seat cushion frame. The surface of the pad 18 is covered with a seat cushion skin 20.

On the other hand, the seat back 14 includes a seat back frame (not shown) which is a skeleton member and has a substantially rectangular shape when viewed from the front. On the front side of the seat back frame, like the seat cushion 12, a seat back pad 22 is provided. The surface of the seat back pad 22 is covered with a seat back skin 24.

Further, the lower end of the seat back frame is rotatably connected to the rear end of the seat cushion frame via a reclining mechanism 26. The reclining mechanism 26 is equipped with a reclining lever 28, and by rotating the reclining lever 28, the seat back 14 can be reclined with respect to the seat cushion 12.

The vehicle seat 10 also includes a pair of left and right slide rails 30 at the bottom of the seat cushion 12, and these slide rails 30 allow the vehicle seat 10 to move in the longitudinal direction of the vehicle. The pair of left and right slide rails 30 each include a lower rail 32 and an upper rail 34.

The lower rail 32 is arranged along the longitudinal direction, and mounting brackets (not shown) are attached to the front and rear ends of the lower rail 32, and the lower rail 32 is attached to the vehicle body through the mounting bracket. It is fixed to the floor (not shown).

The upper rail 34 is disposed with its longitudinal direction running in the front-rear direction, and is supported so as to be slidable in the longitudinal direction with respect to the lower rail 32. However, normally, the slide of the upper rail 34 with respect to the lower rail 32 is restricted by a slide lock mechanism (not shown), and by operating the lock release lever 36, the slide restriction by the slide lock mechanism is released. ing.

As shown in FIG. 2, an anchor bracket (bracket) 38 is fixed to the upper surface of the rear part of the upper rail 34 disposed on the left side (outside in the vehicle width direction) of the vehicle seat 10. This anchor bracket 38 is formed to match the width dimension of the slide rail 30, and has a substantially U-shaped cross-sectional shape when cut along the width direction of the slide rail 30 (vehicle width direction). .

A bolt 40 is fastened to the anchor bracket 38, and an anchor plate 44 (to which one end 42A (in the longitudinal direction) of a seat belt 42 constituting a three-point seat belt device is attached via the bolt 40). (described later) are fixed.

This anchor plate 44 has a rectangular plate shape whose longitudinal direction is the seat up-down direction, and a rectangular mounting hole whose longitudinal direction is the width direction of the anchor plate 44 is provided in the upper end 44A of the anchor plate 44. (Attachment part) 46 is formed. One end portion 42A of the seat belt 42 is inserted through the attachment hole 46, and is sewn in a folded state toward the inside in the seat width direction.

Note that the mounting hole 46 has no relation to the main parts of the anchor plate 44 explained in FIGS. 3 to 9, the anchor plate 100 explained in FIGS. 10 to 16, and the anchor plate 200 explained in FIGS. 17 to 22. 3 to 22, their illustrations are omitted.

On the other hand, although not shown, a seat belt stay is arranged on the right side (inside in the vehicle width direction) of the vehicle seat 10, and is attached to the seat belt 42 through a buckle fixed to the upper end of the seat belt stay. The tongue plate is connected to the tongue plate. An occupant seated on the seat cushion 12 is restrained by the seat belt 42 by connecting the tongue plate to the buckle.

(First embodiment)
Here, the anchor plate 44 according to the first embodiment will be explained with reference to FIGS. 3 to 9.

As shown in FIGS. 3 to 6, the anchor plate 44 includes, for example, an anchor plate main body 50 formed of a sheet metal and having a rectangular plate shape whose longitudinal direction is in the up-down direction of the seat, and a wire member ( 52 (first linear member, elastic member) 52. Note that the wire member 52 is preferably coated with silicone, fluorine, or the like in order to suppress noise caused by contact between metals.

The anchor plate main body 50 includes an insertion portion 54 and a holding portion 56. The insertion portion 54 allows the head 40A of the bolt 40 to be inserted therethrough, and is formed approximately at the center of the anchor plate main body 50. The holding portion 56 is capable of holding the neck portion 40B of the bolt 40 and is formed below the insertion portion 54 and at the center of the anchor plate main body 50 in the width direction.

Further, the insertion portion 54 has an arc shape, and the insertion portion 54 and the holding portion 56 are connected. The holding part 56 has a long hole shape formed along the vertical direction of the anchor plate main body 50, and the width dimension (D1) of the holding part 56 is smaller than the inner diameter dimension (D2) of the insertion part 54. is set to .

Further, a rectangular fixing hole 58 whose longitudinal direction is the width direction of the anchor plate body 50 is formed above the insertion portion 54 (below the attachment hole 46 (see FIG. 2)). A pair of engagement holes (first engagement holes) 60 are formed at the upper ends of the pair of side walls 58A of the fixing hole 58 along the width direction of the anchor plate main body 50, respectively.

The pair of engagement holes 60 are formed to match the wire diameter of the wire member 52, and the pair of engagement holes 60 include a pair of engagement portions provided at both ends of the wire member 52 in the longitudinal direction. (First fixing portion) 62 can be engaged with each other (described later).

Here, the wire member 52 will be explained.

The wire member 52 is formed symmetrically in the front view shown in FIG. 3, and is provided on the outer surface (outer surface in the vehicle width direction) 51 side of the anchor plate main body 50, as shown in FIGS. 4 and 5. It is being Note that since the wire member 52 is formed symmetrically when viewed from the front, if the lead line becomes complicated, a code may be attached to the left or right side.

Further, as shown in FIGS. 3 and 6, the wire member 52 includes a large diameter portion 64, a small diameter portion 66, and a fixing portion (first fixing portion) 68.

The large diameter portion 64 has a substantially arcuate shape that is formed substantially concentrically and outwardly of the insertion portion 54 formed in the anchor plate main body 50 . The small diameter portion 66 has a diameter larger than the width (D1) of the holding portion 56 formed on the anchor plate main body 50 and smaller than the inner diameter (D2) of the insertion portion 54, and is located outside the holding portion 56. It is formed into a roughly arc shape.

Further, a constriction portion (first constriction portion, narrow width portion) 70 is provided between the small diameter portion 66 and the large diameter portion 64, and the constriction portion 70 allows the large diameter portion 64 and the small diameter portion 66 to be continuous. It is formed by The constricted portion 70 protrudes toward the inside of the holding portion 56 and is elastically deformable along the width direction of the holding portion 56 .

The neck 70 widens when the neck 40B of the bolt 40 passes, as shown by the two-dot chain line in FIG. 8, and narrows after the neck 40B of the bolt 40 passes, as shown by the solid line. The width makes it possible to restrict movement of the neck portion 40B of the bolt 40 in the direction of the insertion portion 54.

Further, the constricted portion 70 is configured to include a first R portion 72, a second R portion 74, and a third R portion 76, as shown in FIG.

The first R portion 72 is formed in a substantially arc shape as a part of the large diameter portion 64, and the second R portion 74 is formed in a substantially arc shape with a larger curvature than the first R portion 72 as a part of the small diameter portion 66. It is formed. The third R section 76 has an inflection point P relative to the first R section 72 and the second R section 74 and connects the first R section 72 and the second R section 74 in a substantially arc shape, as shown in FIG. When the neck 40B of the bolt 40 passes, the neck 40B comes into contact with the bolt 40.

In this embodiment, as shown in FIGS. 5 and 6, the wire member 52 is directly fixed to the anchor plate main body 50 by the fixing part 68. As described above, the fixing portion 68 includes a pair of engaging portions (first engaging portions) 62 that are respectively engaged with the pair of engaging holes 60 .

On the other hand, the wire member 52 is provided on the outer surface 51 side of the anchor plate main body 50. Therefore, on the side of the pair of engagement parts 62 in the wire member 52, there is a bent part 78 that bends from the outer surface 51 of the anchor plate main body 50 toward the inside of the fixing hole 58, and a pair of engagement parts formed in the fixing hole 58. Bent parts 80 and 82 are provided that bend into the matching hole 60.

Further, the central part of the wire member 52 in the longitudinal direction is a folded part 84, and the wire member 52 is positioned at the center line Q in the width direction of the anchor plate main body 50 with the folded part 84 as a starting point (see FIG. 3). ) is formed symmetrically with respect to the axis of symmetry.

An engaging portion (first fixing portion) 86 is provided at the longitudinally central portion of the wire member 52 . This engaging portion 86 is formed so as to sandwich the lower end portion 50B of the anchor plate main body 50 from the outer surface 51 of the anchor plate main body 50 toward the inner surface (inner surface in the vehicle width direction) 53 (see FIG. 4). There is.

With the above configuration, for example, the engaging portion 86 of the wire member 52 is engaged with the lower end portion 50B of the anchor plate main body 50, and the pair of engaging portions 62 of the wire member 52 are formed in the fixing hole 58. They are respectively engaged with the pair of engagement holes 60 . Thereby, the wire member 52 is fixed to the anchor plate main body 50.

(action and effect)
Next, the functions and effects of the anchor plate 44 according to the first embodiment will be explained.

As shown in FIG. 7, in this embodiment, the head 40A of the bolt 40 fastened to the anchor bracket 38 (see FIG. 2) is inserted into the insertion portion 54 of the anchor plate 44 (anchor plate main body 50). When the anchor plate 44 comes into contact with the washer 88 provided on the bolt 40, the anchor plate 44 is pulled upward. Thereby, as shown in FIG. 9, the neck portion 40B of the bolt 40 moves (relatively) to the holding portion 56.

Here, the wire member 52 is directly fixed to the anchor plate 44, and when the neck portion 40B of the bolt 40 moves (relatively) to the holding portion 56, the neck portion 40B of the bolt 40 is attached to the large diameter portion 64 of the wire member 52. from there to the small diameter portion 66 (see FIG. 8). At this time, the neck portion 40B passes through the constricted portion 70 that connects the large diameter portion 64 and the small diameter portion 66.

As shown in FIG. 8, the constricted portion 70 protrudes toward the inside of the holding portion 56 and is elastically deformable along the width direction of the holding portion 56. When the neck 40B of the bolt 40 passes, the narrowed portion 70 widens as shown by the two-dot chain line, and narrows after the neck 40B of the bolt 40 passes, as shown by the solid line. Movement of the neck portion 40B of the bolt 40 in the direction of the insertion portion 54 can be restricted.

In this manner, in this embodiment, the wire member 52 that enables movement of the bolt 40 or restricts movement of the bolt 40 is directly fixed to the anchor plate main body 50. For this reason, for example, although not shown, the attachment of the wire member 52 is simplified in this embodiment compared to the case where the elastic member is fixed to the anchor plate body via a fixing device such as a rivet or a screw. can be done.

Thereby, in this embodiment, the number of man-hours when assembling the anchor plate 44 can be reduced, and the cost including the material cost for the fixture can be reduced accordingly. Furthermore, by using the wire member 52 as the elastic member, the shape can be set more freely than with a plate-like member such as a plate spring.

In this embodiment, the wire member 52 is directly fixed to the anchor plate main body 50 by the pair of engaging portions 62 and 86. The pair of engaging portions 62 are respectively engaged with the pair of engaging holes 60 formed in the upper end portion 50A of the anchor plate main body 50, and the engaging portion 86 holds the lower end portion 50B of the anchor plate main body 50. do. Thereby, the wire member 52 is fixed to the anchor plate main body 50. A constricted portion 70 is provided between the pair of engaging portions 62 and 86.

As described above, in this embodiment, the pair of engaging parts 62 and 86 for fixing the wire member 52 to the anchor plate main body 50 are provided with the constricted part 70 therebetween, so that the bolt 40 can be fixed. When the neck portion 40B passes through the constriction portion 70, the wire member 52 can be prevented from shifting with respect to the anchor plate main body 50.

Further, in this embodiment, as shown in FIGS. 5 and 6, the wire member 52 is provided on the outer surface 51 side of the anchor plate main body 50, and the wire member 52 is provided on the side of the pair of engagement parts 62. A bent portion 78 that bends from the outer surface 51 of the fixing hole 50 toward the inside of the fixing hole 58, and bent portions 80 and 82 that bend toward the inside of a pair of engagement holes 60 formed inside the fixing hole 58 are provided.

In this way, the pair of engaging portions 62 are respectively engaged with the pair of engaging holes 60 in the fixing hole 58 from the outer surface 51 side of the anchor plate main body 50 via the bent portions 78, 80, 82. It is difficult to come off from the engagement hole 60 of. In addition, since the pair of engagement portions 62 are respectively engaged with the pair of engagement holes 60 in a state in which elastic energy is accumulated, the pair of engagement portions 62 become more difficult to disengage.

On the other hand, in this embodiment, as shown in FIG. 3, the constricted portion 70 includes a first R section 72, a second R section 74, and a third R section 76. The first R portion 72 is formed in a substantially arc shape as a part of the large diameter portion 64 centered inside the insertion portion 54, and the second R portion 74 is formed as a part of the small diameter portion 66 centered on the holding portion 56 side. It is formed in a substantially arc shape with a larger curvature than the 1R portion 72.

As shown in FIG. 8, the constricted portion 70 widens when the neck portion 40B of the bolt 40 passes, and after the neck portion 40B of the bolt 40 passes, it restores its width and extends from the holding portion 56 of the bolt 40 to the insertion portion 54. It is set to restrict movement to. Therefore, in the present embodiment, the curvature of the first R section 72 formed on the large diameter section 64 side is set to be smaller than the curvature of the second R section 74 formed on the small diameter section 66 side in the constriction section 70. be done.

Accordingly, in this embodiment, when the neck portion 40B of the bolt 40 moves (locks) from the insertion portion 54 to the holding portion 56, the constriction portion 70 is likely to widen via the neck portion 40B. On the other hand, when the neck portion 40B of the bolt 40 moves from the holding portion 56 to the insertion portion 54 (unlock movement), the constriction portion 70 becomes more difficult to widen than when the neck portion 40B moves to lock.

In this embodiment, by providing such a constriction part 70 in the wire member 52, when the neck part 40B of the bolt 40 passes, a reaction force can be obtained above and below the constriction part 70 via the constriction part 70. , the rigidity of the wire member 52 can be improved.

Further, the neck 40B of the bolt 40 comes into contact with the third R portion 76 when the neck 40B of the bolt 40 passes therethrough. The third R section 76 has an inflection point P (see FIG. 3) with respect to the first R section 72 and the second R section 74, and connects the first R section 72 and the second R section 74 in a substantially arc shape.

In this way, the third R portion 76 that the neck portion 40B of the bolt 40 comes into contact with has an inflection point P with respect to the first R portion 72 and the second R portion 74, so that when the wire member 52 widens, the third R portion 76 contacts the first R portion 76. A reaction force is obtained from the insertion portion 54 via the portion 72 and the holding portion 56 via the second R portion 74, and the rigidity of the wire member 52 can be further improved.

Further, in this embodiment, the wire member 52 is elastically deformable along the width direction of the holding portion 56. That is, the wire member 52 can be elastically deformed along the same plane of the anchor plate 44.

Generally, as shown in FIG. 2, the anchor plate 44 to which one end portion 42A of the seat belt 42 is attached is provided on the lower side of the vehicle seat 10. Therefore, the anchor plate 44 needs to be arranged so as not to interfere with parts and the like around the lower portion of the vehicle seat 10.

As a comparative example, although not shown, for example, when the elastic member is elastically deformed along the thickness direction of the anchor plate, the anchor plate is attached to avoid interference with parts etc. around the lower part of the vehicle seat. Location is restricted.

In contrast, in the present embodiment, as shown in FIG. 8, the wire member 52 is elastically deformed along the same plane of the anchor plate 44, so that the wire member 52 is elastically deformed around the lower side of the vehicle seat 10 (see FIG. 2). Interference with other parts, etc. is avoided. As a result, in this embodiment, restrictions on the mounting position of the anchor plate 44 are relaxed, and the degree of freedom in the mounting position of the anchor plate 44 is improved.

As described above, according to the present embodiment, it is possible to obtain the anchor plate 44 in which the restrictions on the mounting position are relaxed and the increase in cost can be suppressed.

(Second embodiment)
Next, an anchor plate 100 according to a second embodiment will be described with reference to FIGS. 10 to 16. In addition, in the anchor plate 100 according to the second embodiment, substantially the same configuration as the anchor plate 44 (FIG. 6) according to the first embodiment is denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 10 to 14, the anchor plate 100 includes an anchor plate main body 102 and a wire member (second linear member, elastic member) 104.

As shown in FIG. 10, the anchor plate body 102 includes an insertion part 54 and a holding part 56, and a lower end 102A of the anchor plate body 102 has an opening on the lower side of the anchor plate body 102. A notch 106 having a substantially U-shape is formed.

A pair of engagement holes (second engagement holes) 108 are respectively formed in the pair of side walls 106A of the notch portion 106 along the width direction of the anchor plate main body 102. A pair of engaging portions (second fixing portions) 110 provided at both ends of the wire member 104 in the longitudinal direction are respectively engaged with the pair of engaging holes 108 .

Here, the wire member 104 will be explained.

The wire member 104 is formed symmetrically in the front view shown in FIG. 10, and is provided on the outer surface (outer surface in the vehicle width direction) 103 side of the anchor plate main body 102, as shown in FIGS. 11 and 12. It is being

Further, as shown in FIGS. 10, 12, and 13, the wire member 104 includes a fixed part (second fixed part) 112, an arc part (first arc part) 114, and a constricted part (second constricted part). , narrow width portion) 116.

The fixing part 112 includes a pair of engaging parts (third engaging part) 110 engaged with the lower end 102A of the anchor plate main body 102 and a pair of engaging parts fixed to both ends of the anchor plate main body 102 in the width direction. The wire member 104 is directly fixed to the anchor plate main body 102 by the pair of engaging parts 110 and the pair of engaging parts 113.

The arc portion 114 is disposed on the side of the holding portion 56, and is formed in a substantially arc shape with a diameter larger than the width dimension (D1) of the holding portion 56 and smaller than the inner diameter dimension (D2) of the insertion portion 54. There is. A pair of engaging portions 110 are formed on the lower side of the arcuate portion 114, respectively.

Further, the constricted portion 116 is disposed on the holding portion 56 side, is located above the circular arc portion 114, and is formed continuously with the circular arc portion 114. The constricted part 116 and the upper part of the engaging part 113 are connected by a straight part (first external part) 118, respectively. The pair of linear parts 118 are inclined toward the lower side of the anchor plate main body 102 as they go outward in the width direction of the anchor plate main body 102, and the engaging part 113 and the circular arc part 114 are formed to be substantially opposed to each other. .

Furthermore, a pair of straight parts (first external parts) 120 are connected to the lower part of the engaging part 113 and are vertically symmetrical to the pair of straight parts 118, and the lower ends of the straight parts 120 are connected to the anchor. The plate body 102 is connected to the plate body 102 by a straight portion 122 along the lower end thereof.

Further, the constricted portion 116 protrudes toward the inside of the holding portion 56 and is elastically deformable along the width direction of the holding portion 56 . As shown in FIG. 15, the neck portion 116 widens when the neck portion 40B of the bolt 40 passes through, and narrows after the neck portion 40B of the bolt 40 passes, as shown in FIG. Movement of the neck portion 40B of the bolt 40 in the direction of the insertion portion 54 can be restricted.

Here, the constricted portion 116 is configured to include a first R portion 124, a second R portion 126, and a third R portion 128, as shown in FIG.

The first R section 124 is formed to be connected to the straight section 118, and the second R section 126 is formed in a substantially arc shape as a part of the arc section 114 with a larger curvature than the first R section 124. The third R section 128 has an inflection point P with respect to the second R section 126 and is connected to the first R section 124 in a substantially arc shape, through which the neck section 40B of the bolt 40 passes, as shown in FIGS. 15 and 16. When doing so, the neck portion 40B comes into contact.

In this way, since the constricted portion 116 that the neck portion 40B of the bolt 40 comes into contact with has an inflection point P (see FIG. 10) with respect to the circular arc portion 114, when the wire member 104 widens, the circular arc portion 114 A reaction force is obtained from this, and the rigidity of the wire member 104 can be further improved.

Further, in this embodiment, the wire member 104 is directly connected to the lower end 102A of the anchor plate main body 102 and both ends of the anchor plate main body 102 in the width direction by the pair of engaging parts 110 and the pair of engaging parts 113. Fixed. Thereby, in this embodiment, when the neck portion 40B of the bolt 40 passes through the constriction portion 70, it is possible to prevent the wire member 104 from shifting with respect to the anchor plate main body 102.

(Third embodiment)
Next, an anchor plate 200 according to a third embodiment will be described with reference to FIGS. 17 to 22. In addition, in the anchor plate 200 according to the third embodiment, substantially the same configuration as the anchor plate 44 (FIG. 6) according to the first embodiment is designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 17 to 20, the anchor plate 200 includes an anchor plate main body 202 and a wire member (third linear member, elastic member) 204. An insertion portion 54 and a holding portion 56 are formed.

As shown in FIG. 20, the anchor plate main body 202 in this embodiment includes a first plate 206 and a second plate 208, and the first plate 206 and the second plate 208 overlap in the thickness direction. In this state, it is fixed with screws 210 at both ends in the width direction and at the center in the vertical direction.

An accommodating portion 212 recessed along the thickness direction is provided at the lower part of the second plate 208, and the wire member 204 can be accommodated within this accommodating portion 212. The wire member 204 is fixed to the anchor plate main body 202 in a state where the wire member 204 is housed in the housing portion 212 .

Here, the wire member 204 will be explained.

The wire member 204 is formed symmetrically in the front view shown in FIG. 17, and is housed inside the anchor plate main body 202 as shown in FIGS. 18 and 19.

Further, as shown in FIGS. 17, 19, and 20, the wire member 204 includes an arcuate portion 214, an outer shape portion (second outer shape portion) 216, and a constriction portion (third constriction portion, narrow width portion) 218. It is composed of and.

The arcuate portion 214 is disposed on the holding portion 56 side, and is formed into a substantially arcuate shape with a diameter larger than the width dimension (D1) of the holding portion 56 and smaller than the inner diameter dimension (D2) of the insertion portion 54. There is. Further, the outer shape portion 216 is disposed on the holding portion 56 side, is provided on the outside of the circular arc portion (second circular arc portion) 214 in the radial direction, and forms the outer shape of the wire member 204.

The constricted portion 218 is disposed on the side of the holding portion 56, is continuous with the circular arc portion 214, and is formed with an inflection point P relative to the circular arc portion 214, so that when the neck portion 40B of the bolt 40 passes, the constricted portion 218 The neck portion 40B makes contact.

Further, the constricted portion 218 protrudes toward the inside of the holding portion 56 and is elastically deformable along the width direction of the holding portion 56 . As shown in FIGS. 21 and 22, the neck portion 218 widens when the neck portion 40B of the bolt 40 passes, and narrows after the neck portion 40B of the bolt 40 passes. movement in the direction of the insertion portion 54 can be restricted.

Further, the constricted portion 218 is configured to include a first R portion 220, a second R portion 222, and a third R portion 224, as shown in FIG.

The first R section 220 is a part of the outer shape section 216, and the second R section 222 is formed as a part of the arc section 214 into a substantially arc shape with a larger curvature than the first R section 220. The third R section 224 has an inflection point P with respect to the second R section 222 and is connected to the second R section 222 in a substantially arc shape, through which the neck section 40B of the bolt 40 passes, as shown in FIGS. 21 and 22. When doing so, the neck portion 40B comes into contact.

In this way, since the constricted portion 218 that the neck portion 40B of the bolt 40 comes into contact with has an inflection point P (see FIG. 17) with respect to the circular arc portion 214, when the wire member 204 widens, the circular arc portion 214 A reaction force is obtained from this, and the rigidity of the wire member 204 can be further improved.

On the other hand, as shown in FIG. 17, FIG. 19, and FIG. A positioning portion 226 is formed to protrude along the outer shape of the member 204. This positioning portion 226 is arranged between the circular arc portion 214 and the outer shape portion 216 of the wire member 204. Thereby, the wire member 204 is positioned with respect to the anchor plate main body 202.

In this way, by providing the accommodating portion 212 for positioning and fixing the wire member 204 with respect to the anchor plate main body 202, when the neck portion 40B of the bolt 40 passes through the constriction portion 218, the wire member 204 is fixed relative to the anchor plate main body 202. 204 can be prevented from shifting.

In addition, the present invention can be implemented with various modifications without departing from the gist thereof. Moreover, it goes without saying that the scope of the rights of the present invention is not limited to the above embodiments.

10 Vehicle seat 12 Seat cushion 38 Anchor bracket (bracket)
40 Bolt 40A Head 40B Neck 42 Seatbelt 42A One end (one end in the longitudinal direction of the seatbelt)
44 Anchor plate 46 Mounting hole 50 Anchor plate body 52 Wire member (first linear member, elastic member)
54 Insertion part 56 Holding part 60 Engagement hole (first engagement hole)
62 Engaging part (first engaging part, first fixing part)
64 Large diameter part (first linear member)
66 Small diameter part (first linear member)
68 Fixed part (first fixed part, first linear member)
70 First constriction part (first linear member, narrow width part)
72 1st R part (first constriction part, narrow width part)
74 2nd R part (first constriction part, narrow width part)
76 3rd R section (first constriction section, narrow width section)
86 Engaging part (second engaging part, first fixing part)
100 Anchor plate 102 Anchor plate body 104 Wire member (second linear member, elastic member)
108 Engagement hole (second engagement hole)
110 Engaging part (third engaging part, second fixing part)
112 Fixed part (second fixed part, second linear member)
113 Engaging part (fourth engaging part, second fixing part)
114 Arc part (first arc part, second linear member)
116 Second constriction part (second linear member, narrow width part)
118 Straight line part (first external part, second linear member)
120 Straight line part (first external part, second linear member)
124 1st R section (narrow width section)
126 2nd R section (narrow width section)
128 3rd R section (narrow width section)
200 Anchor plate 202 Anchor plate body 204 Wire member (third linear member, elastic member)
206 1st plate (anchor plate body)
208 Second plate (anchor plate body)
212 Storage part 214 Arc part (second arc part, third linear member)
216 External part (second external part, third linear member)
218 Third constriction part (third linear member, narrow width part)
220 1st R section (narrow width section)
222 2nd R section (narrow width section)
224 3rd R section (narrow width section)
226 Positioning part (anchor plate body)
P Inflection point Q Center line

Claims (15)

An anchor plate that is provided on the outside in the vehicle width direction of a seat cushion on which an occupant is seated, and to which one end of the seat belt in the longitudinal direction is attached,
an insertion portion formed on the anchor plate main body through which the head of a bolt fastened to a bracket provided on the outside in the vehicle width direction of the seat cushion can be inserted;
The anchor plate is formed in the anchor plate main body, is provided on the opposite side of the attachment part to which one end in the longitudinal direction of the seat belt is attached, with the insertion part in between, is connected to the insertion part, and has a width dimension smaller than that of the insertion part. a holding portion formed to hold the neck of the bolt;
It is directly fixed to the anchor plate main body, protrudes toward the inside of the holding part, and is elastically deformable along the width direction of the holding part, and expands when the neck of the bolt passes through it, and expands when the neck of the bolt passes. an elastic member that narrows after the neck passes through and can restrict movement of the neck of the bolt in the direction of the insertion portion;
Anchor plate with. The anchor plate according to claim 1, wherein the elastic member is formed of a linear member. 3. The anchor plate according to claim 1, wherein the elastic member has a narrow portion that extends toward the inside of the holding portion and widens when the neck of the bolt passes therethrough. The narrow portion is
a first R portion disposed on the insertion portion side and formed in a substantially arc shape;
a second R portion disposed on the holding portion side and formed in a substantially arc shape with a larger curvature than the first R portion;
The anchor plate according to claim 3, comprising: The narrow portion has an inflection point with respect to at least the second R portion, connects the first R portion and the second R portion, and has a third R portion that the neck portion of the bolt comes into contact with when the neck portion passes through. The anchor plate according to claim 4, further comprising: The anchor plate according to any one of claims 1 to 5, wherein the elastic member has a fixing portion that is directly fixed to the anchor plate body. The elastic member is formed of a linear member with an end, and is folded back at the center in the longitudinal direction of the linear member, and is formed laterally symmetrically with respect to a center line located at the center of the width direction of the anchor plate body as an axis of symmetry. a first linear member made of
The first linear member is
a first fixing part that is directly fixed to the anchor plate main body;
a large diameter portion disposed on the insertion portion side and formed in a substantially arc shape along the shape of the insertion portion;
a small diameter portion disposed on the holding portion side, having a diameter larger than the width dimension of the holding portion and smaller diameter than the insertion portion, and formed in a substantially arc shape;
The bolt protrudes toward the inside of the holding part, connects the large diameter part and the small diameter part, is formed with an inflection point relative to the large diameter part and the small diameter part, and is formed when the neck of the bolt passes through. a first constriction portion that the neck portion contacts;
The anchor plate according to any one of claims 1 to 6, comprising: The first fixing part is
The first linear member is respectively engaged with a pair of first engagement holes formed at both longitudinal ends of the first linear member and formed on opposite sides of the holding part in the anchor plate main body with the insertion part therebetween. a pair of first engaging parts,
a second engagement part formed in the longitudinal center of the first linear member, disposed on the opposite side of the pair of first engagement parts, and engaged with the lower end of the anchor plate main body;
The anchor plate according to claim 7, comprising: The first constriction portion is
a first R portion forming a part of the large diameter portion;
a second R portion forming a part of the small diameter portion;
a third R part having an inflection point with respect to the first R part and the second R part, connecting the first R part and the second R part, and with which the neck part of the bolt comes into contact when the neck part passes;
The anchor plate according to claim 7 or 8, comprising: The elastic member is formed of a linear member with an end, and is folded back at a central portion in the longitudinal direction of the linear member, and is formed symmetrically with respect to a center line located at the center of the width direction of the anchor plate body as an axis of symmetry. a second linear member,
The second linear member is
a second fixing part that is directly fixed to the anchor plate main body;
a first circular arc portion disposed on the side of the holding portion and having a diameter larger than the width of the holding portion and smaller than the insertion portion and formed in a substantially arc shape;
a first outer shape portion provided outside the first circular arc portion in the radial direction and forming an outer shape of the second linear member;
The bolt protrudes toward the inside of the holding portion, connects the first circular arc portion and the first outer shape portion, is formed with an inflection point relative to the first circular arc portion, and is formed when the neck portion of the bolt passes through. a second constriction portion that the neck portion contacts;
The anchor plate according to any one of claims 1 to 6, comprising: The second fixing part is
a pair of third engagement portions formed at both ends of the second linear member in the longitudinal direction and respectively engaged with a pair of second engagement holes formed at the lower end of the anchor plate main body; ,
a pair of fourth engaging portions that are formed continuously with the second constricted portion and are respectively engaged with a pair of side end portions of the anchor plate body located on the radially outer side of the first circular arc portion;
The anchor plate according to claim 10, comprising: The elastic member is a third linear member formed of an endless linear member, and formed symmetrically with respect to a center line located at the center of the anchor plate main body in the width direction as an axis of symmetry,
The third linear member is
a second arcuate portion disposed on the holding portion side and formed in a substantially arcuate shape and having a larger diameter than the width dimension of the holding portion and a smaller diameter than the insertion portion;
a second outer shape portion provided outside the second circular arc portion in the radial direction and forming an outer shape of the third linear member;
It extends toward the inside of the holding part, connects the second circular arc part and the second outer shape part, is formed with an inflection point with respect to the second circular arc part, and when the neck of the bolt passes through. a third constriction portion that the neck portion contacts;
The anchor plate according to any one of claims 1 to 6, comprising: The anchor plate according to claim 12, wherein the anchor plate main body is provided with a housing portion in which the second circular arc portion and the second external shape portion are housed. The anchor plate main body is
a first plate forming a part of the anchor plate main body;
a second plate that constitutes the other part of the anchor plate main body, overlaps with the first plate, and forms the accommodating portion between the first plate;
a positioning part formed in the housing part, inserted between the second circular arc part and the second outer shape part, and positioning the third linear member;
The anchor plate according to claim 13, comprising: A vehicle seat in which one longitudinal end of a seat belt is attached to the anchor plate according to any one of claims 1 to 14.