Anchor plate and vehicle seat

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

[Technical Field]

[0001] The present invention relates to an anchor plate and a vehicle seat. [Background technology]

[0002] The following Patent Document 1 discloses technology relating to an anchor plate having a plate body (hereinafter referred to as the "anchor plate body") with an opening through which a bolt attached to the vehicle body or seat is inserted, and a spring plate (hereinafter referred to as the "leaf spring") attached to the anchor plate body.

[0003] In this prior art, the leaf spring has a pair of legs that overlap the side portions on either side of the opening and are fixed to the side portions with rivets, a tie portion that connects the pair of legs together, and a guide lip that extends from the tie portion.

[0004] On the other hand, the opening formed in the anchor plate body has a large hole portion through which the bolt is inserted and a narrow hole portion connected to the large hole portion. The tie portion of the leaf spring is formed across the narrow hole portion, and the guide lip of the leaf spring extends from the tie portion toward the large hole portion and is formed so as to move away from the anchor plate body as it extends toward the tip end in the extending direction.

[0005] In the prior art, a bolt fixed to the vehicle body is inserted through the large hole in the anchor plate and the anchor plate is then lifted up. This causes the bolt head to slide along the anchor plate body and come into contact with the guide lip. Furthermore, when the anchor plate is lifted up, the tie portion elastically deforms in a direction away from the anchor plate body, causing the bolt head to enter between the tie portion and the anchor plate body.

[0006] This causes the bolt head to pass through the tie portion and move to the bottom end of the small hole. At this time, the tie portion returns to its original position, preventing the bolt head from moving back toward the large hole. This connects the anchor plate to the bolt so that it cannot be removed. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2018-127031 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the above-mentioned prior art, the leaf spring must be fixed to the anchor plate body via rivets, which is cumbersome, increases the number of steps required to assemble the anchor plate, and increases costs, including the material cost of the rivets.

[0009] Furthermore, the guide lip of the leaf spring extends from the tie portion toward the large hole portion and is formed so as to move away from the anchor plate body as it extends toward the tip of the extension direction. When the anchor plate is attached to a bolt fixed to the vehicle body, the tie portion is elastically deformed in a direction away from the anchor plate body, so the guide lip also moves in a direction away from the anchor plate body. As a result, the position where the anchor plate can be attached is limited to avoid interference with parts around the anchor plate.

[0010] In consideration of the above, an object of the present invention is to provide an anchor plate and a vehicle seat that alleviate restrictions on the mounting position and that can suppress increases in cost. [Means for solving the problem]

[0011] In order to solve the above problem, the anchor plate according to the invention of claim 1 is an anchor plate that is provided on the outer side in the vehicle width direction of a seat cushion on which an occupant sits, and to which one end in the longitudinal direction of a seat belt is attached, and includes: an insertion portion that is formed on an anchor plate main body, and through which a head of a bolt fastened to a bracket provided on the outer side in the vehicle width direction of the seat cushion can be inserted; a retaining portion that is formed on the anchor plate main body, and is provided on the opposite side of an attachment portion to which one end in the longitudinal direction of the seat belt is attached, with the insertion portion therebetween, and is connected to the insertion portion and has a width dimension smaller than that of the insertion portion, and holds the neck of the bolt; and an elastic member that is directly fixed to the anchor plate main body, protrudes toward the inside of the retaining portion, is elastically deformable along the width direction of the retaining portion, expands when the neck of the bolt passes through, and narrows after the neck of the bolt has passed, thereby restricting movement of the neck of the bolt in the direction of the insertion portion.

[0012] The anchor plate according to the invention recited in claim 1 is provided on the outer side of a seat cushion on which an occupant sits in the vehicle width direction, and one end of a seat belt in the longitudinal direction is attached to the anchor plate. The anchor plate includes an insertion portion and a holding portion formed in an anchor plate body, and an elastic member is directly fixed to the anchor plate body.

[0013] The insertion portion is designed to allow 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 therethrough, and the holding portion is provided on the opposite side of the mounting portion to which one end of the seat belt in the longitudinal direction is attached, with the insertion portion in between, and is connected to the insertion portion and formed with a width dimension smaller than that of the insertion portion, and holds the neck of the bolt.

[0014] The elastic member protrudes toward the inside of the retaining portion and is elastically deformable along the width direction of the retaining portion. The elastic member widens when the neck of the bolt passes through, and narrows after the neck of the bolt passes through, restricting movement of the bolt neck toward the insertion portion.

[0015] In this way, in the present invention, the elastic member that allows or restricts bolt movement is fixed directly to the anchor plate body. Therefore, compared to, for example, a case in which the elastic member is fixed to the anchor plate body via a fastener such as a rivet or a screw, attachment of the elastic member can be simplified. As a result, in the present invention, the number of steps required for assembling the anchor plate can be reduced, and costs, including the material costs of the fasteners, can be reduced accordingly.

[0016] In the present invention, the elastic member is elastically deformable along the width direction of the holding portion, i.e., the elastic member is elastically deformable along the same plane as the anchor plate.

[0017] Generally, an anchor plate to which one end of a seat belt is attached is provided on the lower side of a vehicle seat, and therefore, the anchor plate needs to be positioned so as not to interfere with components around the lower side of the vehicle seat.

[0018] As a comparative example, for example, when the elastic member elastically deforms along the thickness direction of the anchor plate, the position at which the anchor plate is attached is limited in order to avoid interference with parts around the lower side of the vehicle seat.

[0019] In contrast, in the present invention, the elastic member elastically deforms along the same plane as the anchor plate, so restrictions on the mounting position of the anchor plate are alleviated, and the degree of freedom in the mounting position of the anchor plate is improved.

[0020] Furthermore, the present invention provides a method for manufacturing a hologram recording medium, comprising: It is formed of a linear member.

[0021] The present invention In the above, the elastic member is formed of a linear member, and therefore, compared to a plate-like member such as a leaf spring, a linear member such as a wire can be more freely designed in shape.

[0022] Claim2 The anchor plate according to the invention described in claim 1 to In the anchor plate according to the described invention, the elastic member is formed with a narrow portion that protrudes toward the inside of the holding portion and expands in width when the neck of the bolt passes through.

[0023] Claim 2 In the anchor plate according to the invention described in (1), the elastic member is formed with a narrow portion. 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 through. This widening of the wide portion allows the bolt to move from the insertion portion to the holding portion.

[0024] Because the widened portion constitutes part of the elastic member, the narrowed portion that widened along the width direction of the retaining portion when the neck of the bolt passed through returns to its original state after the neck of the bolt passed through, thereby restricting the movement of the bolt held by the retaining portion from the retaining portion to the insertion portion.

[0025] Furthermore, by providing such a narrow portion in the elastic member, reaction forces are obtained above and below the narrow portion when the neck of the bolt passes through the narrow portion, thereby improving the rigidity of the elastic member.

[0026] Claim 3 The anchor plate according to the invention described in claim 2 In the anchor plate according to the invention described above, the narrow width portion includes a first R portion disposed on the insertion portion side and formed in a substantially arcuate shape, and a second R portion disposed on the holding portion side and formed in a substantially arcuate shape with a curvature greater than that of the first R portion.

[0027] Claim 3 In the anchor plate according to the invention described above, the narrow portion includes a first R portion and a second R portion. The first R portion is located on the insertion portion side and is formed in a substantially arc shape, while the second R portion is located on the holding portion side and is formed in an arc shape with a larger curvature than the first R portion.

[0028] The narrow portion is configured to widen when the neck of the bolt passes through, and to restrict movement of the bolt from the holding portion to the insertion portion after the neck of the bolt has passed. For this reason, in the narrow portion of the present invention, the curvature of the first R portion located on the insertion portion side is different from that of the second R portion located on the holding portion side.

[0029] When the neck of the bolt moves from the insertion portion to the holding portion (locking movement), a smaller curvature of the narrow portion makes it easier for the narrow portion to expand via the neck. On the other hand, when the neck of the bolt moves from the holding portion to the insertion portion (unlocking movement), a larger curvature of the narrow portion makes it more difficult for the narrow portion to expand than during locking movement. For this reason, in the present invention, the second R portion located on the insertion portion side is formed with a larger curvature than the first R portion located on the holding portion side.

[0030] Claim 4 The anchor plate according to the invention described in claim 3 In the anchor plate according to the invention described above, the narrow width 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 further includes a third R portion against which the neck of the bolt abuts when the neck passes through.

[0031] Claim 4 In the anchor plate according to the invention described in 2., the narrow portion further includes a third R portion against which the neck of the bolt abuts when the neck passes through. The third R portion has an inflection point with respect to at least the second R portion, and connects the first R portion and the second R portion.

[0032] In this way, in the present invention, the third R portion, which abuts against the neck of the bolt, has an inflection point at least relative to the second R portion, so that when the elastic member expands, a reaction force is obtained from at least the second R portion side, thereby further improving the rigidity of the elastic member.

[0033] Claim 5 The anchor plate according to the invention described in claims 1 to 5 4In the anchor plate according to any one of the above, the elastic member is formed with a fixing portion that is directly fixed to the anchor plate body.

[0034] Claim 5 In the anchor plate according to the invention described above, a fixing portion is formed on the elastic member, and the elastic member is directly fixed to the anchor plate body via this fixing portion. Therefore, compared to, for example, fixing the elastic member to the anchor plate body via fixing devices such as rivets or screws, the installation of the elastic member can be simplified.

[0035] Claim 6 The anchor plate according to the invention described in claims 1 to 5 5 and a first constricted portion that projects inward from the retaining portion, connects the large diameter portion with the small diameter portion, and has an inflection point with respect to the large diameter portion and the small diameter portion, and that contacts the neck of the bolt when the neck passes through the retaining portion.

[0036] Claim 6 In the anchor plate according to the invention described above, the elastic member is a first linear member formed of a linear member with ends, which is folded back at the longitudinal center of the first linear member and is formed symmetrically with respect to the center line located at the widthwise center of the anchor plate body as the axis of symmetry.

[0037] The first linear member includes a first fixed portion, a large diameter portion, a small diameter portion, and a first constricted portion.

[0038] The first fixing portion is directly fixed to the anchor plate body, and the large diameter portion is disposed on the insertion portion side and is formed in a generally arcuate shape to conform to the shape of the insertion portion. The small diameter portion is disposed on the retaining portion side and is formed in a generally arcuate shape with a diameter larger than the width dimension of the retaining portion and smaller than the insertion portion. The first constricted portion protrudes toward the inside of the retaining portion. The first constricted portion connects the large diameter portion and the small diameter portion and is formed with an inflection point relative to the large diameter portion and the small diameter portion, against which the neck of the bolt abuts when passing through.

[0039] In this way, the first constriction portion that abuts the neck of the bolt has an inflection point with respect to the large diameter portion and the small diameter portion, so that when the first linear member is widened, a reaction force is obtained from the large diameter portion and the small diameter portion, thereby further improving the rigidity of the first linear member.

[0040] Claim 7 The anchor plate according to the invention described in claim 6 In the anchor plate described above, the first fixing portion includes a pair of first engaging portions formed at both longitudinal ends of the first linear member and respectively engaging with a pair of first engaging holes formed in the anchor plate main body on the opposite side of the retaining portion with the insertion portion therebetween, and a second engaging portion formed in the longitudinal center of the first linear member, positioned opposite the pair of first engaging portions, and engaging with the lower end of the anchor plate main body.

[0041] Claim 7 In the anchor plate according to the invention described above, the first fixing portion includes a pair of first and second engaging portions.

[0042] The pair of first engagement portions are formed at both longitudinal ends of the first linear member and engage with a pair of first engagement holes formed on the anchor plate body on the opposite side of the holding portion with the insertion portion therebetween, while the second engagement portion is formed in the longitudinal center of the first linear member, is positioned opposite the pair of first engagement portions, and engages with the lower end of the anchor plate body.

[0043] In other words, in the present invention, a pair of first and second engaging portions are provided with a first constricted portion between them that connects the large diameter portion and the small diameter portion, and the elastic member is directly fixed to the anchor plate body via the pair of first and second engaging portions.

[0044] In this way, by providing a pair of first and second engaging portions that fix the elastic member to the anchor plate body with the first constricted portion between them, it is possible to prevent the elastic member from shifting relative to the anchor plate body when the neck of the bolt passes through the first constricted portion.

[0045] Claim 8 The anchor plate according to the invention described in claim 6 or claims 7 In the anchor plate described in , the first constricted portion further includes a first R portion that forms part of the large diameter portion, a second R portion that forms part of the small diameter portion, and a third R portion that has an inflection point with respect to the first R portion and the second R portion, connects the first R portion and the second R portion, and against which the neck of the bolt abuts when the neck passes through.

[0046] Claim 8 In the anchor plate according to the invention described above, the first constricted portion is configured to include a first R portion, a second R portion, and a third R portion.

[0047] The first R section forms part of the large diameter section, the second R section forms part of the small diameter section, and the third R section has an inflection point relative to the first R section and the second R section, connecting the first R section and the second R section, and the neck of the bolt abuts against the third R section when it passes through.

[0048] Claim 9 The anchor plate according to the invention described in claims 1 to 5 5In the anchor plate described in any one of claims 1 to 5, the elastic member is a second linear member formed of a linear member with ends, folded back at a central portion in the longitudinal direction of the linear member, and formed symmetrically on both sides with 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 portion that is directly fixed to the anchor plate body; a first arc portion that is arranged on the retaining portion side and is formed in a substantially arc shape with a diameter larger than the width dimension of the retaining portion and smaller than the diameter of the insertion portion; a first outer shape portion that is provided radially outward of the first arc portion and forms the outer shape of the second linear member; and a second constricted portion that protrudes toward the inside of the retaining portion, connects the first arc portion and the first outer shape portion, and is formed with an inflection point with respect to the first arc portion, against which the neck of the bolt abuts when the neck passes through.

[0049] Claim 9 In the anchor plate according to the invention described above, the elastic member is a second linear member formed of a linear member with ends, which is folded back at the longitudinal center of the second linear member and formed symmetrically with respect to the center line located at the widthwise center of the anchor plate body as the axis of symmetry.

[0050] The second linear member includes a second fixing portion, a first arc portion, a first outer shape portion, and a second constricted portion.

[0051] The second fixing portion is directly fixed to the anchor plate body, and the first arc portion is disposed on the retaining portion side and has a diameter larger than the width dimension of the retaining portion and smaller than the insertion portion, forming a generally arc-shaped portion. A first outer shape portion is provided radially outward of the first arc portion, and the outer shape of the second linear member is formed by the first outer shape portion. The second constricted portion protrudes toward the inside of the retaining portion. The second constricted portion connects the first arc portion and the first outer shape portion. The second constricted portion is formed to have an inflection point relative to the first arc portion, and the neck of the bolt abuts against the second arc portion when the neck passes through.

[0052] In this way, since the second constriction portion that abuts the neck of the bolt has an inflection point with respect to the first arc portion, a reaction force is obtained from the first arc portion when the second linear member is widened, thereby further improving the rigidity of the second linear member.

[0053] Claim 10 The anchor plate according to the invention described in claim 9 In the anchor plate described in the above, the second fixing portion is configured to include a pair of third engaging portions formed at both longitudinal ends of the second linear member and respectively engaging with a pair of second engaging holes formed at the lower end of the anchor plate main body, and a pair of fourth engaging portions formed continuously with the second constriction portion and respectively engaging with a pair of side end portions of the anchor plate main body located radially outside the first arc portion.

[0054] Claim 10 In the anchor plate according to the invention described above, the second fixing portion is configured to include a pair of third engaging portions and a pair of fourth engaging portions.

[0055] The pair of third engagement portions are formed at both longitudinal ends of the second linear member and engage with the pair of second engagement holes formed in the lower end of the anchor plate body, respectively, and the fourth engagement portion is formed continuously with the second constricted portion and engages with the pair of side ends of the anchor plate body located radially outward of the first arc portion, respectively.

[0056] That is, in the present invention, the second linear member is directly fixed to the anchor plate body via the pair of third engaging portions and the pair of fourth engaging portions. By providing the pair of third engaging portions and the pair of fourth engaging portions that fix the second linear member to the anchor plate body in this manner, it is possible to prevent the second linear member from shifting relative to the anchor plate body when the neck of the bolt passes through the second constricted portion.

[0057] Claim 11 The anchor plate according to the invention described in claims 1 to 5 5In the anchor plate described in any one of claims 1 to 5, the elastic member is a third linear member formed of an endless linear member and formed symmetrically on the left and right sides with a center line located at the center of the width direction of the anchor plate body as an axis of symmetry, and the third linear member is configured to include: a second arc portion that is arranged on the retaining portion side and is formed in a substantially arc shape with a diameter larger than the width dimension of the retaining portion and smaller than the diameter of the insertion portion; a second outer shape portion that is arranged on the retaining portion side and is provided radially outside the second arc portion and forms the outer shape of the third linear member; and a third constricted portion that protrudes toward the inside of the retaining portion, connects the second arc portion and the second outer shape portion, and is formed with an inflection point with respect to the second arc portion, with which the neck of the bolt abuts when the neck passes through.

[0058] Claim 11 In the anchor plate according to the invention described above, the elastic member is a third linear member formed of an endless linear member, and is formed symmetrically with respect to the center line located at the center of the width direction of the anchor plate body as the axis of symmetry.

[0059] The third linear member includes a second arc portion, a second outer shape portion, and a third constricted portion.

[0060] The second arc portion is disposed on the retaining portion side and has a diameter larger than the width dimension of the retaining portion and smaller than the insertion portion, forming a generally arc-shaped configuration. The second outer shape portion is provided radially outward of the second arc portion and forms the outer shape of the third linear member. The third constricted portion protrudes toward the inside of the retaining portion. The third constricted portion connects the second arc portion and the second outer shape portion and is formed with an inflection point relative to the second arc portion, against which the neck of the bolt abuts when passing through.

[0061] In this way, since the third constriction portion that abuts the neck of the bolt has an inflection point with respect to the second arc portion, a reaction force is obtained from the second arc portion when the third linear member is widened, thereby further improving the rigidity of the third linear member.

[0062] Claim 12The anchor plate according to the invention described in claim 11 In the anchor plate described in , an accommodation portion is provided within the anchor plate body in which the second arc portion and the second outer shape portion are accommodated.

[0063] Claim 12 In the anchor plate according to the invention described above, a housing portion is provided inside the anchor plate body, and the second arc portion and the second outer shape portion are housed in the housing portion.

[0064] In this way, by providing an accommodation portion that fixes the third linear member to the anchor plate body, it is possible to prevent the third linear member from shifting relative to the anchor plate body when the neck of the bolt passes through the third constriction portion.

[0065] Claim 13 The anchor plate according to the invention described in claim 12 In the anchor plate described in the above, the anchor plate body includes a first plate that forms a part of the anchor plate body, a second plate that forms another part of the anchor plate body and overlaps with the first plate to form the accommodating portion between the first plate, and a positioning portion that is formed within the accommodating portion and is inserted between the second arc portion and the second outer shape portion to position the third linear member.

[0066] Claim 13 In the anchor plate according to the invention described above, the anchor plate body includes a first plate, a second plate, and a positioning portion.

[0067] The first plate constitutes a part of the anchor plate body, and the second plate constitutes the other part of the anchor plate body. When the first plate and the second plate overlap, a receiving portion is formed between the first plate and the second plate. A positioning portion is formed within the receiving portion, and the positioning portion is inserted between the second arc portion and the second outer shape portion, thereby positioning the third linear member with respect to the anchor plate body.

[0068] Claim 14 The vehicle seat according to the invention described in claims 1 to 5 13 One end of a seat belt in a longitudinal direction is attached to the anchor plate according to any one of the above.

[0069] Claim 14 In the vehicle seat according to the invention described above, claims 1 to 5 13 It is possible to enjoy the effects obtained by the anchor plate described in any one of the above. [Effects of the Invention]

[0070] As described above, according to the present invention, it is possible to obtain an anchor plate and a vehicle seat that alleviate restrictions on the mounting position and that can suppress increases in cost. [Brief explanation of the drawings]

[0071] [Figure 1] 1 is a side view showing a vehicle seat to which an anchor plate according to an embodiment of the present invention is applied; [Figure 2] 1 is an enlarged side view showing a main portion of a vehicle seat to which an anchor plate according to an embodiment of the present invention is applied; [Figure 3] FIG. 2 is a front view of the anchor plate according to the first embodiment. [Figure 4] FIG. 2 is a side view of the anchor plate according to the first embodiment. [Figure 5] FIG. 2 is a perspective view of the anchor plate according to the first embodiment. [Figure 6] FIG. 2 is an exploded perspective view of the anchor plate according to the first embodiment. [Figure 7] FIG. 4 is a perspective view for explaining the function of the anchor plate according to the first embodiment. [Figure 8] FIG. 4 is a front view for explaining the function of the anchor plate according to the first embodiment. [Figure 9] FIG. 4 is a perspective view for explaining the function of the anchor plate according to the first embodiment. [Figure 10] FIG. 10 is a front view of the anchor plate according to the second embodiment. [Figure 11] FIG. 10 is a side view of the anchor plate according to the second embodiment. [Figure 12] FIG. 10 is a perspective view of an anchor plate according to a second embodiment. [Figure 13] FIG. 10 is an exploded perspective view of an anchor plate according to a second embodiment. [Figure 14] FIG. 10 is a perspective view of the anchor plate according to the second embodiment, as viewed from the rear side. [Figure 15] FIG. 10 is a perspective view for explaining the function of the anchor plate according to the second embodiment. [Figure 16] FIG. 10 is a perspective view for explaining the function of the anchor plate according to the second embodiment. [Figure 17] FIG. 10 is a front view of the anchor plate according to the third embodiment. [Figure 18] FIG. 10 is a side view of the anchor plate according to the third embodiment. [Figure 19] FIG. 10 is a perspective view of an anchor plate according to a third embodiment. [Figure 20] FIG. 10 is an exploded perspective view of an anchor plate according to a third embodiment. [Figure 21] FIG. 11 is a perspective view for explaining the function of the anchor plate according to the third embodiment. [Figure 22] FIG. 11 is a perspective view for explaining the function of the anchor plate according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0072] Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to the drawings. Note that the arrow FR shown as appropriate in the following drawings indicates the forward direction in the longitudinal direction of the vehicle (the direction in which the seated person faces), the arrow UP indicates the upward direction in the vertical direction of the vehicle, and the arrow RH indicates the rightward direction in the width direction of the vehicle. Hereinafter, when the directions of the longitudinal, vertical, and left and right are simply used in the description, they refer to the longitudinal direction of the seat, the up and down direction of the seat, and the left and right direction in the width direction of the seat when facing the direction of travel of the vehicle, unless otherwise specified.

[0073] <Vehicle seat configuration> First, the configuration of the vehicle seat according to this embodiment will be described.

[0074] As shown in FIG. 1, a vehicle seat 10 according to this embodiment includes a seat cushion 12 on which an occupant sits, and a seat back 14 whose lower end is connected to the rear end of the seat cushion 12 and supports the upper body of the occupant, and a headrest 16 is attached to the upper end of the seat back 14.

[0075] Here, the seat cushion 12 has a seat cushion frame (not shown) which is a skeletal member and has an approximately rectangular shape in a plan view, and a seat cushion pad 18 is provided on the upper surface side of the seat cushion frame, and the surface of the seat cushion pad 18 is covered with a seat cushion skin 20.

[0076] On the other hand, the seat back 14 has a seat back frame (not shown) which is a skeletal member and has an approximately rectangular shape when viewed from the front, and a seat back pad 22 is provided on the front side of the seat back frame, similar to the seat cushion 12, and the surface of the seat back pad 22 is covered with a seat back skin 24.

[0077] The lower end of the seatback frame is rotatably connected to the rear end of the seat cushion frame via a reclining mechanism 26. The reclining mechanism 26 is provided with a reclining lever 28, and by rotating the reclining lever 28, the seatback 14 can be reclined relative to the seat cushion 12.

[0078] The vehicle seat 10 also has a pair of left and right slide rails 30 below the seat cushion 12, which allow the vehicle seat 10 to move in the fore-and-aft direction of the vehicle. Each of the pair of left and right slide rails 30 has a lower rail 32 and an upper rail 34.

[0079] The lower rail 32 is arranged with its longitudinal direction aligned in the fore-and-aft 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 fixed to the vehicle floor (not shown) via the mounting brackets.

[0080] The upper rail 34 is disposed with its longitudinal direction aligned with the front-to-rear direction and is supported so as to be slidable along the longitudinal direction relative to the lower rail 32. However, a slide lock mechanism (not shown) normally restricts the upper rail 34 from sliding relative to the lower rail 32, and the slide restriction imposed by the slide lock mechanism is released by operating the lock release lever 36.

[0081] 2, an anchor bracket (bracket) 38 is fixed to the upper surface of the rear part of the upper rail 34 located 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 section when cut along the width direction of the slide rail 30 (vehicle width direction).

[0082] A bolt 40 is fastened to the anchor bracket 38, and an anchor plate 44 (described later) to which one end 42A of a seat belt 42 (in the longitudinal direction) that constitutes the three-point seat belt device is attached is fixed via the bolt 40.

[0083] The anchor plate 44 has a rectangular plate shape with its longitudinal direction aligned with the up-down direction of the seat, and an upper end 44A of the anchor plate 44 is formed with a rectangular mounting hole (mounting portion) 46 with its longitudinal direction aligned with the width direction of the anchor plate 44. One end 42A of the seat belt 42 is inserted into this mounting hole 46 and sewn in a state where it is folded back toward the inside in the seat width direction.

[0084] It should be noted that the mounting holes 46 are not shown in Figures 3 to 22 because they are not related to the main parts of the anchor plate 44 described in Figures 3 to 9, the anchor plate 100 described in Figures 10 to 16, or the anchor plate 200 described in Figures 17 to 22.

[0085] On the other hand, although not shown, a seat belt stay is arranged on the right side (inner side in the vehicle width direction) of the vehicle seat 10, and a tongue plate attached to the seat belt 42 is connected to a buckle fixed to the upper end of the seat belt stay. An occupant seated on the seat cushion 12 is restrained by the seat belt 42 by connecting the tongue plate to the buckle.

[0086] (First embodiment) Here, the anchor plate 44 according to the first embodiment will be described with reference to FIGS.

[0087] 3 to 6, the anchor plate 44 is configured to include, for example, an anchor plate main body 50 formed from sheet metal in the shape of a rectangular plate with the longitudinal direction aligned with the up-down direction of the seat, and a wire member (first linear member, elastic member) 52 formed from piano wire. Note that the wire member 52 is preferably coated with silicon, fluorine, or the like to suppress abnormal noise caused by metal-to-metal contact.

[0088] The anchor plate body 50 is configured to include an insertion portion 54 and a retaining portion 56. The insertion portion 54 is configured to allow the head portion 40A of the bolt 40 to be inserted therethrough, and is formed in approximately the center of the anchor plate body 50. The retaining portion 56 is configured to allow the neck portion 40B of the bolt 40 to be held, and is formed below the insertion portion 54 and in the center of the anchor plate body 50 in the width direction.

[0089] The insertion portion 54 is arc-shaped, and is connected to the holding portion 56. The holding portion 56 is an elongated hole formed along the vertical direction of the anchor plate body 50, and the width dimension (D1) of the holding portion 56 is set to be smaller than the inner diameter dimension (D2) of the insertion portion 54.

[0090] Furthermore, a rectangular fixing hole 58 is formed on the upper side of the insertion portion 54 (below the mounting hole 46 (see FIG. 2)), with its longitudinal direction being the width direction of the anchor plate body 50. A pair of engagement holes (first engagement holes) 60 are formed at the upper ends of a pair of side walls 58A of the fixing hole 58, respectively, along the width direction of the anchor plate body 50.

[0091] The pair of engagement holes 60 are formed to match the wire diameter of the wire member 52, and a pair of engagement portions (first fixing portions) 62 provided at both longitudinal ends of the wire member 52 can be engaged with the pair of engagement holes 60 (described later).

[0092] Here, the wire member 52 will be described.

[0093] The wire member 52 is formed symmetrically in the front view shown in Fig. 3, and is provided on the outer surface (the outer surface in the vehicle width direction) 51 side of the anchor plate main body 50, as shown in Fig. 4 and Fig. 5. Since the wire member 52 is formed symmetrically in the front view, a reference numeral may be assigned to the left or right side when the lead wires are complicated.

[0094] As shown in FIGS. 3 and 6, the wire member 52 is configured to include a large diameter portion 64, a small diameter portion 66, and a fixing portion (first fixing portion) 68.

[0095] The large diameter portion 64 has a generally arcuate shape formed generally concentrically with and outside the insertion portion 54 formed in the anchor plate body 50. The small diameter portion 66 has a diameter dimension larger than the width dimension (D1) of the holding portion 56 formed in the anchor plate body 50 and smaller than the inner diameter dimension (D2) of the insertion portion 54, and is formed in a generally arcuate shape outside the holding portion 56.

[0096] Furthermore, a constricted portion (first constricted portion, narrow portion) 70 is provided between the small diameter portion 66 and the large diameter portion 64, and the large diameter portion 64 and the small diameter portion 66 are formed continuously by this constricted portion 70. 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.

[0097] The constricted portion 70 widens as the neck 40B of the bolt 40 passes through, as shown by the dotted line in Figure 8, and narrows after the neck 40B of the bolt 40 has passed through, as shown by the solid line, thereby restricting the movement of the neck 40B of the bolt 40 toward the insertion portion 54.

[0098] As shown in FIG. 3, the constricted portion 70 is configured to include a first R-portion 72, a second R-portion 74, and a third R-portion 76.

[0099] The first R portion 72 is formed in a generally arcuate shape as part of the large diameter portion 64, and the second R portion 74 is formed in a generally arcuate shape as part of the small diameter portion 66 with a larger curvature than the first R portion 72. The third R portion 76 has an inflection point P with respect to the first R portion 72 and the second R portion 74, connects the first R portion 72 and the second R portion 74 in a generally arcuate shape, and as shown in Fig. 8, the neck portion 40B of the bolt 40 abuts against it when the neck portion 40B passes through.

[0100] 5 and 6, in this embodiment, the wire member 52 is directly fixed to the anchor plate body 50 by the fixing portion 68. As described above, the fixing portion 68 includes a pair of engagement portions (first engagement portions) 62 that are engaged with the pair of engagement holes 60, respectively.

[0101] 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 pair of engaging portions 62 side of the wire member 52, a bent portion 78 that bends from the outer surface 51 of the anchor plate main body 50 toward the inside of the fixing hole 58, and bent portions 80, 82 that bend toward the inside of the pair of engaging holes 60 formed in the fixing hole 58 are provided.

[0102] In addition, the central portion of the wire member 52 in the longitudinal direction is a folded portion 84, and the wire member 52 is formed symmetrically with the center line Q (see Figure 3) located at the center of the width direction of the anchor plate main body 50 as the axis of symmetry, starting from the folded portion 84.

[0103] An engaging portion (first fixing portion) 86 is provided in the longitudinal center of the wire member 52. This engaging portion 86 is formed to clamp the lower end portion 50B of the anchor plate main body 50 from the outer surface 51 toward the inner surface (the inner surface in the vehicle width direction) 53 (see FIG. 4) of the anchor plate main body 50.

[0104] With the above-described configuration, for example, the engaging portion 86 of the wire member 52 is engaged with the lower end portion 50B of the anchor plate body 50, and the pair of engaging portions 62 of the wire member 52 are respectively engaged with the pair of engaging holes 60 formed in the fixing hole 58. This results in the wire member 52 being fixed to the anchor plate body 50.

[0105] (Action and effect) Next, the operation and effect of the anchor plate 44 according to the first embodiment will be described.

[0106] 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 body 50). When the anchor plate 44 abuts against the washer 88 provided on the bolt 40, the anchor plate 44 is pulled upward. As a result, the neck 40B of the bolt 40 moves (relatively) toward the retaining portion 56, as shown in Fig. 9.

[0107] 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) toward the retaining portion 56, the neck portion 40B of the bolt 40 moves from the large diameter portion 64 toward the small diameter portion 66 (see FIG. 8 ) of the wire member 52. At this time, the neck portion 40B passes through a constricted portion 70 connecting the large diameter portion 64 and the small diameter portion 66.

[0108] 8, the constricted portion 70 protrudes toward the inside of the retaining portion 56 and is elastically deformable along the width direction of the retaining portion 56. The constricted portion 70 widens as shown by the two-dot chain line when the neck 40B of the bolt 40 passes through, and narrows as shown by the solid line after the neck 40B of the bolt 40 has passed, thereby restricting movement of the neck 40B of the bolt 40 toward the insertion portion 54.

[0109] In this way, in this embodiment, the wire member 52, which allows movement of the bolt 40 or restricts movement of the bolt 40, is fixed directly to the anchor plate body 50. For this reason, for example, although not shown, compared to the case where an elastic member is fixed to the anchor plate body via a fastener such as a rivet or a screw, in this embodiment, attachment of the wire member 52 can be simplified.

[0110] As a result, in this embodiment, it is possible to reduce the number of steps required to assemble the anchor plate 44, and it is possible to reduce costs accordingly, including the material costs for the fixing devices. Furthermore, by using the wire member 52 as the elastic member, it is possible to freely set the shape compared to plate-shaped members such as leaf springs.

[0111] In this embodiment, the wire member 52 is directly fixed to the anchor plate body 50 by the pair of engaging portions 62 and 86. The pair of engaging portions 62 are respectively engaged with a pair of engaging holes 60 formed in the upper end portion 50A of the anchor plate body 50, and the engaging portion 86 holds the lower end portion 50B of the anchor plate body 50. In this way, the wire member 52 is fixed to the anchor plate body 50. A constricted portion 70 is provided between the pair of engaging portions 62 and 86.

[0112] In this way, in this embodiment, by providing a pair of engaging portions 62 and 86 that fix the wire member 52 to the anchor plate main body 50 with the constricted portion 70 between them, it is possible to prevent the wire member 52 from shifting relative to the anchor plate main body 50 when the neck portion 40B of the bolt 40 passes through the constricted portion 70.

[0113] Also, in this embodiment, as shown in Figures 5 and 6, the wire member 52 is provided on the outer surface 51 side of the anchor plate main body 50, and on the pair of engaging portions 62 side, there is provided a bending portion 78 that bends from the outer surface 51 of the anchor plate main body 50 toward the fixing hole 58, and bending portions 80, 82 that bend toward the pair of engaging holes 60 formed within the fixing hole 58.

[0114] In this way, the pair of engaging portions 62 are engaged with the pair of engaging holes 60 in the fixing hole 58 from the outer surface 51 side of the anchor plate body 50 via the bent portions 78, 80, 82, respectively, and are therefore less likely to come off the pair of engaging holes 60. Furthermore, by engaging the pair of engaging portions 62 with the pair of engaging holes 60, respectively, with elastic energy stored in them, the pair of engaging portions 62 become even more unlikely to come off.

[0115] 3, the constricted portion 70 is configured to include a first R portion 72, a second R portion 74, and a third R portion 76. The first R portion 72 is formed in a generally arcuate shape as part of the large diameter portion 64, centered inside the insertion portion 54, while the second R portion 74 is formed in a generally arcuate shape with a larger curvature than the first R portion 72, centered on the retaining portion 56 side, as part of the small diameter portion 66.

[0116] 8, the constricted portion 70 is configured to widen when the neck 40B of the bolt 40 passes through, and then return to its original shape after the neck 40B of the bolt 40 has passed, thereby restricting movement of the bolt 40 from the holding portion 56 to the insertion portion 54. For this reason, in the present embodiment, the constricted portion 70 is configured so that the curvature of the first R portion 72 formed on the large diameter portion 64 side is smaller than the curvature of the second R portion 74 formed on the small diameter portion 66 side.

[0117] As a result, in this embodiment, when the neck portion 40B of the bolt 40 moves from the insertion portion 54 to the holding portion 56 (locking movement), the neck portion 40B makes it easier for the neck portion 70 to widen. On the other hand, when the neck portion 40B of the bolt 40 moves from the holding portion 56 to the insertion portion 54 (unlocking movement), the neck portion 70 becomes more difficult to widen than during the locking movement.

[0118] In this embodiment, by providing such a constricted portion 70 in the wire member 52, when the neck portion 40B of the bolt 40 passes through the constricted portion 70, a reaction force is obtained above and below the constricted portion 70, thereby improving the rigidity of the wire member 52.

[0119] Furthermore, the neck portion 40B of the bolt 40 abuts against the third R portion 76 when the neck portion 40B passes through. The third R portion 76 has an inflection point P (see FIG. 3) with respect to the first R portion 72 and the second R portion 74, and connects the first R portion 72 and the second R portion 74 in a substantially arc shape.

[0120] In this way, the third R portion 76, which abuts against the neck portion 40B of the bolt 40, has an inflection point P relative to the first R portion 72 and the second R portion 74, so that when the wire member 52 is widened, a reaction force is obtained from the insertion portion 54 via the first R portion 72 and the retaining portion 56 via the second R portion 74, thereby further improving the rigidity of the wire member 52.

[0121] In this embodiment, the wire member 52 is elastically deformable along the width direction of the holding portion 56. In other words, the wire member 52 is elastically deformable along the same plane as the anchor plate 44.

[0122] 2, the anchor plate 44 to which one end 42A of the seat belt 42 is attached is generally provided on the lower side of the vehicle seat 10. For this reason, the anchor plate 44 needs to be positioned so as not to interfere with peripheral components on the lower side of the vehicle seat 10.

[0123] As a comparative example (not shown), for example, when the elastic member elastically deforms along the thickness direction of the anchor plate, the position at which the anchor plate is attached is limited in order to avoid interference with parts around the lower side of the vehicle seat.

[0124] In contrast, in this embodiment, as shown in Fig. 8, the wire member 52 elastically deforms along the same plane as the anchor plate 44, thereby avoiding interference with components around the lower side of the vehicle seat 10 (see Fig. 2). As a result, in this embodiment, restrictions on the mounting position of the anchor plate 44 are alleviated, and the degree of freedom in the mounting position of the anchor plate 44 is improved.

[0125] As described above, according to this embodiment, it is possible to obtain the anchor plate 44 which alleviates restrictions on the mounting position and can suppress increases in cost.

[0126] (Second embodiment) Next, an anchor plate 100 according to a second embodiment will be described with reference to Fig. 10 to Fig. 16. Note that in the anchor plate 100 according to the second embodiment, the same reference numerals are used for configurations that are substantially the same as those of the anchor plate 44 according to the first embodiment (Fig. 6), and descriptions thereof will be omitted.

[0127] As shown in FIGS. 10 to 14, the anchor plate 100 includes an anchor plate body 102 and a wire member (second linear member, elastic member) 104. As shown in FIGS.

[0128] As shown in Figure 10, the anchor plate body 102 is composed of an insertion portion 54 and a holding portion 56, and a notch portion 106 that is approximately U-shaped and opens on the lower side of the anchor plate body 102 is formed at the lower end portion 102A of the anchor plate body 102.

[0129] A pair of engagement holes (second engagement holes) 108 are formed in each of the pair of side walls 106A of the cutout portion 106 along the width direction of the anchor plate body 102. A pair of engagement portions (second fixing portions) 110 provided on both ends of the wire member 104 in the longitudinal direction are engaged with the pair of engagement holes 108, respectively.

[0130] Here, the wire member 104 will be described.

[0131] The wire member 104 is formed symmetrically in the front view shown in Figure 10, and is provided on the outer surface (the outer surface in the vehicle width direction) 103 side of the anchor plate main body 102, as shown in Figures 11 and 12.

[0132] As shown in Figures 10, 12, and 13, the wire member 104 is configured to include a fixed portion (second fixed portion) 112, an arc portion (first arc portion) 114, and a constricted portion (second constricted portion, narrow portion) 116.

[0133] The fixing portion 112 is composed of a pair of engaging portions (third engaging portions) 110 engaged with the lower end portion 102A of the anchor plate main body 102, and a pair of engaging portions (fourth engaging portions) 113 fixed to both widthwise ends of the anchor plate main body 102, and the wire member 104 is directly fixed to the anchor plate main body 102 by the pair of engaging portions 110 and the pair of engaging portions 113.

[0134] The arc portion 114 is disposed on the side of the holding portion 56, and is formed in a generally 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. A pair of engagement portions 110 are formed below the arc portion 114.

[0135] Furthermore, the constricted portion 116 is disposed on the retaining portion 56 side, and is located above the arc portion 114 and is formed to be continuous with the arc portion 114. The constricted portion 116 and the upper portion of the engaging portion 113 are each connected by a straight portion (first outer shape portion) 118. The pair of straight portions 118 are inclined downwards of the anchor plate body 102 as they extend outward in the width direction of the anchor plate body 102, and the engaging portion 113 and the arc portion 114 are formed to be substantially opposite each other.

[0136] Furthermore, a pair of straight portions (first outer shape portions) 120 formed symmetrically above and below the pair of straight portions 118 are connected to the lower portion of the engagement portion 113, and the lower ends of the straight portions 120 are connected by straight portion 122 along the lower end of the anchor plate main body 102.

[0137] Furthermore, the constricted portion 116 protrudes toward the inside of the retaining portion 56 and is elastically deformable along the width direction of the retaining portion 56. As shown in Fig. 15, the constricted portion 116 widens when the neck 40B of the bolt 40 passes through, and as shown in Fig. 16, the constricted portion 116 narrows after the neck 40B of the bolt 40 has passed through, thereby restricting movement of the neck 40B of the bolt 40 toward the insertion portion 54.

[0138] As shown in FIG. 10, the constricted portion 116 is configured to include a first R-section 124, a second R-section 126, and a third R-section 128.

[0139] The first R portion 124 is formed to be connected to the straight portion 118, and the second R portion 126 is formed as a part of the arc portion 114 in a generally arc shape with a larger curvature than the first R portion 124. The third R portion 128 has an inflection point P with respect to the second R portion 126 and is connected to the first R portion 124 in a generally arc shape, and as shown in Figures 15 and 16, the neck portion 40B of the bolt 40 abuts against it when the neck portion 40B passes through.

[0140] In this way, the constricted portion 116 against which the neck portion 40B of the bolt 40 abuts has an inflection point P (see Figure 10) with respect to the arc portion 114, so that when the wire member 104 widens, a reaction force is obtained from the arc portion 114, thereby further improving the rigidity of the wire member 104.

[0141] Furthermore, in this embodiment, the wire member 104 is directly fixed to the lower end 102A of the anchor plate body 102 and both ends in the width direction of the anchor plate body 102 by the pair of engaging portions 110 and the pair of engaging portions 113. As a result, in this embodiment, it is possible to prevent the wire member 104 from shifting relative to the anchor plate body 102 when the neck portion 40B of the bolt 40 passes through the constricted portion 70.

[0142] (Third embodiment) Next, an anchor plate 200 according to a third embodiment will be described with reference to Figures 17 to 22. In the anchor plate 200 according to the third embodiment, the same components as those of the anchor plate 44 according to the first embodiment (Figure 6) are denoted by the same reference numerals, and the description thereof will be omitted.

[0143] As shown in Figures 17 to 20, the anchor plate 200 is configured to include an anchor plate main body 202 and a wire member (third linear member, elastic member) 204, and the anchor plate main body 202 is formed with an insertion portion 54 and a holding portion 56.

[0144] As shown in Figure 20, the anchor plate body 202 in this embodiment is composed of a first plate 206 and a second plate 208, and the first plate 206 and the second plate 208 are overlapped in the thickness direction and fixed with screws 210 at both ends in the width direction and at the center in the up-down direction.

[0145] An accommodation portion 212 recessed along the plate thickness direction is provided in the lower portion of the second plate 208, and the wire member 204 can be accommodated in this accommodation portion 212. With the wire member 204 accommodated in this accommodation portion 212, the wire member 204 is fixed to the anchor plate body 202.

[0146] Here, the wire member 204 will be described.

[0147] The wire members 204 are formed symmetrically in the front view shown in FIG. 17, and are housed inside the anchor plate main body 202 as shown in FIGS.

[0148] Also, as shown in Figures 17, 19, and 20, the wire member 204 is configured to include an arc portion 214, an outer portion (second outer portion) 216, and a constricted portion (third constricted portion, narrow portion) 218.

[0149] The arc portion 214 is disposed on the side of the holding portion 56, and is formed in a generally 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. The outer shape portion 216 is disposed on the side of the holding portion 56, and is provided radially outside the arc portion (second arc portion) 214, and forms the outer shape of the wire member 204.

[0150] The constricted portion 218 is arranged on the retaining portion 56 side, is continuous with the arc portion 214, and is formed with an inflection point P relative to the arc portion 214, against which the neck portion 40B of the bolt 40 abuts when it passes through.

[0151] 21 and 22, the constricted portion 218 expands when the neck 40B of the bolt 40 passes through it, and narrows after the neck 40B of the bolt 40 has passed through it, thereby restricting movement of the neck 40B of the bolt 40 toward the insertion portion 54.

[0152] Furthermore, 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.

[0153] The first R portion 220 is a part of the outer shape portion 216, and the second R portion 222 is formed as a part of the arc portion 214 in a generally arc shape with a larger curvature than the first R portion 220. The third R portion 224 has an inflection point P with respect to the second R portion 222 and is connected to the second R portion 222 in a generally arc shape, and as shown in Figures 21 and 22, the neck portion 40B of the bolt 40 abuts against the third R portion 224 when the neck portion 40B passes through.

[0154] In this way, the constricted portion 218 that abuts the neck portion 40B of the bolt 40 has an inflection point P (see Figure 17) with respect to the arc portion 214, so that when the wire member 204 expands, a reaction force is obtained from the arc portion 214, thereby further improving the rigidity of the wire member 204.

[0155] 17, 19, and 20, the accommodating portion 212 is formed to follow the outer shape of the wire member 204, and a positioning portion 226 is protruded from the lower part of the accommodating portion 212 so as to follow the outer shape of the wire member 204 on the inside of the accommodating portion 212. This positioning portion 226 is disposed between the arc portion 214 and the outer shape portion 216 of the wire member 204. This positions the wire member 204 with respect to the anchor plate body 202.

[0156] In this way, by providing a storage section 212 that positions and fixes the wire member 204 relative to the anchor plate main body 202, it is possible to prevent the wire member 204 from shifting relative to the anchor plate main body 202 when the neck portion 40B of the bolt 40 passes through the constricted portion 218.

[0157] In addition, the present invention can be implemented with various modifications within the scope of the gist thereof. Furthermore, it goes without saying that the scope of the rights of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0158] 10 Vehicle seats 12 seat cushions 38 Anchor bracket (bracket) 40 volts 40A head 40B Neck 42 Seatbelt 42A One end (one end of the seat belt in the longitudinal direction) 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 portion (first linear member) 66 Small diameter portion (first linear member) 68 Fixed portion (first fixed portion, first linear member) 70 First constricted portion (first linear member, narrow portion) 72 1st R section (1st constricted section, narrow section) 74 2nd R section (1st constricted section, narrow section) 76 3rd R section (1st constricted section, narrow 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 (3rd engaging part, 2nd fixing part) 112 fixed portion (second fixed portion, second linear member) 113 Engagement part (4th engagement part, 2nd fixed part) 114 Arc portion (first arc portion, second linear member) 116 Second constricted portion (second linear member, narrow portion) 118 Straight section (first outer section, second linear member) 120 Straight portion (first outer portion, second linear member) 124 1R section (narrow 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 First plate (anchor plate body) 208 Second plate (anchor plate body) 212 Storage unit 214 Arc portion (second arc portion, third linear member) 216 Outer part (second outer part, third linear member) 218 Third constricted portion (third linear member, narrow portion) 220 1R section (narrow 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

1. An anchor plate provided on the outer side of a seat cushion on which an occupant sits in the vehicle width direction and to which one end of a seat belt in the longitudinal direction is attached, an insertion portion formed in an anchor plate body, into which a head of a bolt fastened to a bracket provided on an outer side of the seat cushion in the vehicle width direction can be inserted; a retaining portion formed on the anchor plate body, the retaining portion being provided on the opposite side of the attachment portion to which one end of the seat belt in the longitudinal direction is attached, with the insertion portion therebetween, the retaining portion being connected to the insertion portion and having a width dimension smaller than that of the insertion portion, and retaining a neck portion of the bolt; an elastic member that is directly fixed to the anchor plate body, protrudes toward the inside of the holding portion, is elastically deformable along the width direction of the holding portion, expands when the neck of the bolt passes through, and narrows after the neck of the bolt passes through, thereby restricting movement of the neck of the bolt toward the insertion portion; Equipped with The elastic member is an anchor plate formed of a linear member.

2. 2. The anchor plate according to claim 1, wherein the elastic member is formed with a narrow portion that projects inwardly of the holding portion and expands when the neck of the bolt passes through.

3. The narrow width 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 curvature larger than that of the first R portion; The anchor plate according to claim 2 , comprising:

4. 4. The anchor plate according to claim 3, wherein the narrow width 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 further includes a third R portion with which the neck of the bolt abuts when the neck passes through.

5. An anchor plate described in any one of claims 1 to 4, wherein the elastic member has a fixing portion that is directly fixed to the anchor plate body.

6. the elastic member is a first linear member formed of a linear member having ends, folded back at a central portion in a longitudinal direction of the linear member, and formed symmetrically with respect to a center line located at the center in a width direction of the anchor plate body as an axis of symmetry, The first linear member is a first fixing portion directly fixed to the anchor plate 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, the small diameter portion having a diameter larger than the width dimension of the holding portion and smaller than the insertion portion, and formed in a substantially arc shape; a first constricted portion that protrudes toward the inside of the retaining portion, connects the large diameter portion and the small diameter portion, and is formed to have an inflection point with respect to the large diameter portion and the small diameter portion, against which the neck portion of the bolt abuts when the neck portion passes through; The anchor plate according to any one of claims 1 to 5, comprising:

7. The first fixing portion is a pair of first engaging portions formed at both longitudinal ends of the first linear member and respectively engaged with a pair of first engaging holes formed on the anchor plate main body on the opposite side of the holding portion with the insertion portion therebetween; a second engaging portion formed in a longitudinal center portion of the first linear member, disposed on an opposite side of the pair of first engaging portions, and engaged with a lower end portion of the anchor plate body; The anchor plate according to claim 6, comprising:

8. The first constricted 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 portion that has an inflection point with respect to the first R portion and the second R portion, connects the first R portion and the second R portion, and against which the neck portion of the bolt abuts when the neck portion passes through; The anchor plate according to claim 6 or 7, comprising:

9. The elastic member is a second linear member formed of an end-shaped linear member, folded back at the longitudinal center of the linear 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, The second linear member is a second fixing portion directly fixed to the anchor plate body; a first arc portion disposed on the holding portion side, the first arc portion having a diameter larger than the width dimension of the holding portion and smaller than the diameter of the insertion portion, and formed in a substantially arc shape; a first outer shape portion provided radially outward of the first arc portion and forming an outer shape of the second linear member; a second constricted portion that protrudes toward the inside of the retaining portion, connects the first arc portion and the first outer shape portion, and is formed to have an inflection point with respect to the first arc portion, against which the neck portion of the bolt abuts when the neck portion passes through; The anchor plate according to any one of claims 1 to 5, comprising:

10. The second fixing portion is a pair of third engagement portions formed at both longitudinal ends of the second linear member and respectively engaged with a pair of second engagement holes formed in a lower end of the anchor plate body; a pair of fourth engagement portions formed continuously with the second constricted portion and engaged with a pair of side end portions of the anchor plate body located radially outward of the first arc portion; The anchor plate of claim 9, comprising:

11. 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 width direction of the anchor plate body as an axis of symmetry, The third linear member is a second arc portion disposed on the holding portion side, the second arc portion having a diameter larger than the width dimension of the holding portion and smaller than the diameter of the insertion portion, and formed in a substantially arc shape; a second outer shape portion provided radially outward of the second arc portion and forming an outer shape of the third linear member; a third constricted portion that protrudes toward the inside of the retaining portion, connects the second arc portion and the second outer shape portion, and is formed to have an inflection point with respect to the second arc portion, against which the neck portion of the bolt abuts when the neck portion passes through; The anchor plate according to any one of claims 1 to 5, comprising:

12. An anchor plate as described in Claim 11, wherein a storage section is provided within the anchor plate body in which the second arc portion and the second outer shape portion are housed.

13. The anchor plate body is a first plate that constitutes a part of the anchor plate body; a second plate that forms another portion of the anchor plate body and overlaps the first plate to form the accommodation portion between the first plate and the second plate; a positioning portion formed in the accommodation portion, the positioning portion being inserted between the second arc portion and the second outer shape portion to position the third linear member; The anchor plate of claim 12, comprising:

14. A vehicle seat in which one end of a seat belt in the longitudinal direction is attached to an anchor plate described in any one of claims 1 to 13.

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