WO2008139659A1

WO2008139659A1 - Belt guide anchor and seat belt apparatus including the same

Info

Publication number: WO2008139659A1
Application number: PCT/JP2007/074595
Authority: WO
Inventors: Yuki Tabata; Tadashi Sugiyama
Original assignee: Takata Corporation
Priority date: 2007-04-12
Filing date: 2007-12-14
Publication date: 2008-11-20
Also published as: JP2008260415A

Abstract

Belt guide anchor (5) comprises metal plate (5a) as a core metal and, mounted on a given place thereof, resin cover (5b). The metal plate (5a) has large opening (5e) and, integrally fitted to an inferior end border thereof, belt slide part (5c) provided at its superior face with belt slide surface (5c1) of circular arc in cross section. The belt slide part (5c) has right and left protrudent circular-arc-shaped flanges (5c2). The backside (5c3) of each of the flanges (5c2) is shaped into an upward convex cross-section circular arc and is positioned superior to the extreme distal end (5c5) of thebelt slide surface (5c1) of each of the flanges (5c2). Accordingly, there are realized large area of the belt slide part (5c) in contact with the seat belt and large curvature radius of the belt slide part (5c).

Description

Specification

Belt guide anchor and seat belt device provided with the same

TECHNICAL FIELD [0001] The present invention relates to a technical field of a belt guide anchor supported by a vehicle body such as a villa and guiding a seat belt of a seat belt device toward an occupant's shoulder and a seat belt device using the belt guide anchor. Is.

[0002] Conventionally, a seat belt device attached to a vehicle seat of an automobile or the like has restrained an occupant with a seat belt in an emergency such as when a large deceleration acts on a vehicle such as a collision. Yes. As such a seat belt device, various seat bell saddle devices including a belt guide anchor that is supported by, for example, a pillar of a vehicle body and slidably guides the seat belt have been proposed.

[0003] With this belt guide anchor, the seat belt pulled out from the seat belt retractor is bent back by the belt guide anchor and guided toward the occupant's shoulder to fit the occupant. As a result, the seat belt restrains the occupant at the correct position.

[0004] As a belt guide anchor used in a conventional seat belt device, a belt through hole is formed in a metal plate made of steel, and a relatively large curvature is provided at the belt sliding side edge of the belt insertion hole. By forming a bulging portion of a substantially circular curved surface with a radius, and smoothly bringing the seat belt into surface contact with the bulging portion of the circular curved surface with a relatively large contact area, the seat belt can be guided stably. A belt guide anchor that has been slid and prevents the seat belt from being cut or broken has been proposed (see, for example, Japanese Patent Laid-Open No. 2000-13088).

[0005] However, in the bulged portion of the substantially circular curved surface formed on the metal plate, there is a limit in increasing the radius of curvature of the belt sliding side edge, and the contact area with the seat belt is increased so much. It is not possible. Therefore, in the belt guide anchor described in Japanese Patent Laid-Open No. 2 0 1-1 3 8 8 6 2, a metal plug is used. The contact area with the seat belt is increased by covering the bulging portion of the almost circular curved surface of the rate with a resin mold and increasing the radius of curvature of the belt sliding side edge.

However, when the bulging portion of the metal plate constituting the belt sliding side edge portion is molded with resin, it is difficult to obtain good slidability and sufficient durability of the seat belt. Therefore, a belt guide anchor is proposed in which a belt sliding force bar, which is a separate member, is fitted into the resin on the belt sliding side edge to obtain good slidability and sufficient durability, and to further increase the radius of curvature. (See, for example, Japanese Patent Laid-Open No. 2000-0 3 3 8 4 7 7).

[0007] However, the belt guide anchor described in Japanese Patent Laid-Open No. 2 0 0 4-3 3 8 4 7 7 uses a separate member, and thus has a problem that not only the cost is high, but the number of manufacturing steps is large. . Disclosure of the invention

An object of the present invention is to provide an inexpensive belt guide anchor that can reduce the number of manufacturing steps while further increasing the contact area with the seat belt, and a seat belt device using the belt guide anchor.

[0009] In order to achieve the object of the present invention, a belt guide anchor according to the present invention includes a belt insertion hole through which a seat belt pulled out from a seat belt retractor is slidably passed, and an arc-shaped cross section on an upper surface. A belt guide anchor that includes at least a belt sliding portion having a belt sliding surface, and guides a seat belt toward an occupant by the belt through hole and the belt sliding portion. A metal plate provided with an opening larger than the belt through-hole for forming and the belt sliding portion, and the belt sliding portion of the metal plate has at least a lower end edge of the opening of the metal plate And a flange projecting from the vehicle inside to the vehicle outside, and a part of the belt sliding surface is formed on the upper surface of each flange. In addition, a part of the lower surface of each flange is set above the forefront of the flange sliding surface of the flange or the foremost of the belt sliding surface of the flange It is characterized by being set on the same plane as the end.

[0010] Further, in the belt guide anchor according to the present invention, each of the flanges is formed by crushing a portion of the metal plate at least at a lower end edge of the opening lower hole for forming the opening. It is characterized by that. Furthermore, the belt guide anchor according to the present invention is characterized in that the thickness of each flange is set to be constant or substantially constant from the root of each flange to the most advanced part.

Furthermore, the belt guide anchor according to the present invention is characterized in that the thickness of each flange is set so as to be continuously thinned from the root of each flange toward the leading edge.

[0011] On the other hand, the seat belt device according to the present invention, the seat belt to be mounted on the occupant, the seat belt to be pulled out so as to be pulled out, and actuated in an emergency to prevent the seat belt from being pulled out. A seat belt retractor, a belt guide anchor for guiding a seat belt pulled out from the seat belt retractor toward an occupant, and a slidably supported by the seat belt through which the belt guide unloading force is passed. The belt guide anchor force of the present invention is applied to the belt guide anchor, wherein the belt guide anchor is provided with at least a buckle provided on a vehicle body or a vehicle seat and the buckle is detachably locked to the tongue. One is used.

[0012] According to the belt guide anchor of the present invention configured as described above, a part of the belt sliding portion of the metal plate protrudes from the lower end edge of at least the opening of the metal plate to the vehicle inner side and the vehicle outer side, respectively. Set a part of the back side of the belt sliding surface of the belt sliding part to a position above the leading edge of the flange sliding surface of the flange, or set it to the same plane as this leading edge. As a result, the contact area of the belt sliding surface with the seat belt can be further increased and a larger radius of curvature of the arc-shaped belt sliding surface can be effectively achieved compared to the conventional almost circular bulge. Can be set to Therefore, good slidability and sufficient durability of the sheet bell can be obtained. [0013] In particular, as in the invention of claim 2, by forming a belt sliding portion by crushing the metal plate itself at least at the lower edge of the opening lower hole, compared to a conventional substantially circular bulging portion Therefore, the meat of the metal plate in this part can be used effectively. In that case, the curvature radius can be increased more efficiently by increasing the thickness of the metal plate to some extent.

[0014] In addition, it is not necessary to cover the belt sliding portion with the mold resin, and there is no need for a belt sliding cover, which is a separate member fitted into the resin of the belt sliding portion. The belt guide force can be reduced at low cost.

Furthermore, as in the present invention, by setting the thickness of each flange to be constant or almost constant from the root to the most advanced, the metal plate can be used more efficiently. Therefore, even if a metal plate having a relatively thin plate thickness is used, both the contact area of the arcuate belt sliding surface with the seat belt and the radius of curvature of the arcuate belt sliding surface can be effectively increased. it can.

[0016] Further, as in the present invention, by setting the thickness of each flange so as to be continuously reduced from the root toward the leading edge, the root of each flange that receives the most force from the seat belt is set. The wall thickness can be increased. Thereby, the strength of the belt sliding portion can be increased.

[0017] Further, according to the seat belt device of the present invention, since the belt guide anchor of the present invention is used, the seat belt has good sliding performance and sufficient durability of the seat belt can be obtained. As a result, the handling operability of the seat belt by the occupant can be maintained well over a long period of time, and the occupant restraint by the seat belt can be realized over a long period of time in an emergency. Brief Description of Drawings

FIG. 1 is a diagram schematically showing a seat belt apparatus provided with a first example of an embodiment of a belt guide anchor according to the present invention.

FIG. 2 is a front view showing the inner surface of the belt guide anchor of the first example. FIG. 3 is a sectional view taken along line III-III in FIG. 2 (a).

FIG. 4 shows a metal plate of the belt guide anchor 1 of the first example, (a) is a front view showing the inner surface of the vehicle, and (b) is a sectional view taken along line IV-IV in (a).

FIG. 5 is a cross-sectional view similar to FIG. 3, showing a belt guide anchor of a second example of the embodiment of the belt guide anchor according to the present invention.

FIG. 6 is a sectional view similar to FIG. 3, showing a belt guide anchor of a third example of the embodiment of the belt guide anchor according to the present invention.

FIG. 7 is a sectional view similar to FIG. 3, showing a belt guide anchor according to a fourth example of the embodiment of the belt guide anchor force according to the present invention.

FIG. 8 is a cross-sectional view similar to FIG. 3, showing a bell rod guide anchor of a fifth example of the embodiment of the belt guide anchor according to the present invention.

FIG. 9 is a sectional view similar to FIG. 3, showing a bell rod guide anchor of the sixth example of the embodiment of the belt guide anchor according to the present invention.

FIG. 10 is a front view similar to FIG. 2, showing a bell rod guide anchor of a seventh example of the embodiment of the belt guide anchor according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a view schematically showing a seat belt apparatus provided with a first example of an embodiment of a belt guide anchor according to the present invention.

As shown in FIG. 1, a seat belt device 1 of this example is a seat belt retractor fixed to a vehicle body in the vicinity of a vehicle seat 2, as in a conventionally known three-point seat belt device using a seat belt retractor. 3. The seat belt retractor 3 is pulled out from the seat belt retractor 3 and the front belt anchor 4 a is fixed to the floor of the vehicle body or the vehicle seat 2. The seat belt 4 pulled out from the seat belt retractor 3 is Belt guide unforced to guide towards 5, This belt guide anchor 5 to guide The tanda 6 is slidably supported by the seat belt 4 that has been slid, and the buckle 7 is fixed to the floor of the vehicle body or the vehicle seat 2 and the tanda 6 is detachably inserted.

FIG. 2 is a front view showing the inside of the belt guide anchor of the first example, and FIG. 3 is a cross-sectional view taken along the line I I I—ΠΙ in FIG. In the following explanation, the top and bottom are both up and down with the belt guide anchor 5 attached to the vehicle body.

[0022] As shown in Figs. 2 and 3, the belt guide anchor 5 of this example is configured by using a metal plate 5a as a core metal and attaching a resin cover 5b to the metal plate 5a. ing. An elongated belt through hole 5 d is provided between the cover 5 b and the belt sliding portion 5 c of the metal plate 5 a so as to be in the vehicle front-rear direction (left-right direction in FIG. 2). Yes.

[0023] As shown in Figs. 3 and 4 (a), (b), the metal plate 5a is formed of a metal plate such as a steel plate, for example, and is drilled at a location corresponding to the belt through hole 5d. The belt opening 5 e larger than the belt through hole 5 d, the belt sliding portion 5 c integrally provided at the lower end edge of the opening 5 e and the lower portion of the side edge of the opening 5 e, and the belt guide anchor 5 It has mounting holes 5: f for mounting on the car body. On the upper surface of the belt sliding portion 5 c, a belt sliding surface 5 c on which the seat belt 4 slides is formed in an upward convex cross-sectional arc surface. In that case, the belt sliding part 5 c is shown in FIG. 4 from the lower edge of the opening 5 e and the lower part of the side edge of the opening 5 e.

In (b), it has a flange 5 C 2 having an arcuate cross section projecting symmetrically on the left and right (inner side and outer side). These arc-shaped flanges 5 c ₂ extend along the longitudinal direction of the belt through-hole 5 d, and each thickness extends from the root 5 cn of the flange 5 c ₂ to the tip 5 c _4. It is set to be constant or almost constant. With these arc-shaped flanges 5 c ₂ , the sliding length of the belt sliding surface 5 _{C l in} the belt longitudinal direction (belt sliding direction), that is, contact with the seat belt 4 of the belt sliding surface 5 c The area is set larger than the conventional one, and the curvature radius of bending back from the retractor side seat belt 4 to the occupant side seat belt 4 at the belt sliding part 5 c is also smaller than the conventional one. The layer is set larger. As a result, the seat belt 4 smoothly passes through the belt insertion hole 5 d of the bell rod guide anchor 5.

[0024] Back surface of arc-shaped flange 5 C 2 on both sides (surface opposite to belt sliding surface 5 ci; bottom surface in FIG. 3) 5 c ₃ is set to have a constant thickness of flange 5 c ₂ As a result, an arc-shaped belt sliding surface 5 ci is formed in a circular cross-section convex upward (ie, on the side of the bell rod sliding surface 5 c), which is concentric with the center of the circle. And, the most of the back 5 c ₃ of the arc-shaped flange 5 c ₂ is above the cutting edge 5 C 5 of the belt sliding surface 5 of each tip 5 c ₄ of both its these flange 5 c ₂ The position (that is, the position on the belt sliding surface 5 c side along the axis of symmetry of the left and right arc-shaped flanges 5 c ₂ ) is set. In this way, most of the back surface 5 c ₃ of the flange 5 c ₂ is set at a position higher than the leading edge 5 C 5 of the belt sliding surface 5, so that the lower edge of the opening hole of the metal plate 5 a Even if only the lower part of the edge part and both side edges are crushed, a larger contact area with the seat belt 4 and a larger radius of curvature are more efficient than the conventional almost circular bulge part. Will be set.

Furthermore, a predetermined number (eight in the illustrated example) of inclined grooves 5 c 6, 5 c 7 and 5 c ₈ are formed on the belt sliding surface 5 c.

[0026] In order to manufacture the metal plate 5a having such a belt sliding portion 5c, first, a metal plate having a predetermined thickness (for example, 4 mm) such as a conventionally known steel plate is punched by punching or the like. A metal plate 5 a having a predetermined outer shape is manufactured. Next, a mounting hole 5 f is drilled at a predetermined location of the metal plate 5 a, and an opening pilot hole is drilled below the mounting hole 5 f. Then, a flange 5 c ₂ arcuate the lower portion of the lower edge and side edges are crushed pressed by a press or the like of the metal plate 5 a opening under hole of. In this way, the metal plate 5a is manufactured.

[0027] Then, a cover 5b is attached to the metal plate 5a formed in this way at the location shown in Fig. 2 and Fig. 3 and between the metal plate 5a and the cover — 5b. The belt guide anchor 5 of this example is formed by forming the elongated belt through hole 5d. In that case, cover 5 b It is attached to the metal plate 5 a by being fitted into the upper edge of the opening 5 e of the groove 5 a and by locking the locking claw 5 g to the metal plate 5 a. Also, in the arc-shaped flange 5 c ₂ , the tip 5 c ₄ , the lower end 5 _ai of the metal plate 5 a, and both ends 5 c 9, 5 of the arc-shaped flange 5 c ₂ Covers 1 and 5 b are fitted and attached to c 1 0 (shown in Fig. 4 (a)).

[0028] As shown in FIG. 2, the belt insertion hole 5d includes a straight central guide hole 5di that guides the seat belt 4 in a slidable manner, and a twist of the seat belt 4 at both ends of the central guide hole 5. and lines cover Toka escape hole 5 d _2, 5 d ₃ of the curved shape to prevent. Then, the seat belt 4 pulled out from the seat belt retractor 3 is inserted into the belt insertion hole 5d from below and from the rear of the vehicle, and is bent back toward the front of the vehicle after passing through the belt insertion hole 5d. .

[0029] According to the belt guide anchor 5 of this first example, the metal plate 5a itself at the lower edge portion of the opening 5e and the lower side edge portion is crushed and the belt sliding portion 5 is crushed. When c is formed, the belt sliding part 5 c belt sliding surface 5 ci opposite surface (back) 5 c ₃ is the arcuate flange 5 c ₂ belt sliding surfaces 5 _{C l} since from-edge 5 c ₅ is set to the upper position, in that you set the back surface 5 c ₃ in the upper position, the conventional substantially compared to the circular bulging portion, meat metal plate 5 a of this portion Can be used effectively. As a result, the contact area of the belt sliding surface 5c with the seat belt 4 can be further increased and the curvature radius of the belt sliding surface 5ci can be further increased compared to the conventional substantially circular bulge. It becomes possible to set efficiently. Therefore, good slidability and sufficient durability of the seat belt 4 can be obtained. In particular, the radius of curvature can be increased more effectively by increasing the thickness of the metal plate 5a to some extent.

[0030] Further, it is not necessary to cover the bell rod sliding portion with the cover 5b, and the belt sliding portion is fitted to the mold resin of the belt sliding portion like a conventional belt guide anchor made of mold resin. There is no need for a belt sliding cover, which is a separate member, so the number of parts can be reduced and the number of manufacturing steps can be reduced. A guide anchor can be manufactured at low cost.

[0031] Further, in the seat belt device 1 using the belt guide anchor 5 of the first example,

Therefore, the seat belt 4 has good slidability and sufficient durability of the seat belt 4, so that the operability of the seat belt 4 by the occupant can be maintained well over a long period of time. In an emergency, occupant restraint by the seat belt 4 can be realized for a long time.

FIG. 5 is a sectional view similar to FIG. 3, showing a second example of the embodiment of the belt guide anchor according to the present invention. In the following description of each example of the embodiment of the present invention, the same components as those in the previous example are given the same reference numerals, and detailed description thereof will be omitted.

In the belt guide anchor 5 of the first example shown in FIG. 3 described above, a resin cover 5 b is attached to the metal plate 5 a. As shown in FIG. The guide anchor 5 is configured by molding a predetermined portion of the metal plate 5 a with a molding resin 5 b instead of the cover 5 b. For convenience of explanation, since the mold resin 5b has substantially the same function as the above-described cover, the same reference numeral 5b is used for explanation.

[0034] An elongated belt through hole 5d is provided between the mold resin 5b and the belt sliding portion 5c of the metal plate 5a so as to be in the vehicle front-rear direction. In that case, at the portion of the arc-shaped flange 5 c ₂ , the tip portion 5 c ₄ , the lower end portion 5 a "of the metal plate 5 a and both ends 5 c 9, 5 c of the arc-shaped flange 5 c ₂ _{1 ()} is mode one field in the mold resin 5 b, respectively. further, about all and the belt sliding portion 5 c of the back surface 5 c ₃ of arcuate flange 5 c ₂ and the belt揷通hole 5 d opposite All of the parts 5 a ₂ of the metal plate 5 a located on the side are molded with the resin 5 b, so that the belt guide union is integrally joined between the metal plate 5 a and the mold resin 5 b. Power 1 is composed.

According to the belt guide anchor 5 of the second example, the resin portion made of the mold resin 5 b can be more firmly and integrally coupled to the metal plate 5 a. [0036] Other configurations and other operational effects of the belt guide anchor 5 of the second example are the same as those of the belt guide anchor 5 of the first example. Further, the configuration and operational effects of the seat belt apparatus 1 using the belt guide anchor 5 of the second example are the same as those of the seat belt apparatus 1 of the first example.

FIG. 6 is a cross-sectional view similar to FIG. 3, showing a third example of the embodiment of the belt guide anchor according to the present invention.

In the first example of the belt guide en force one 5 shown in FIG. 3 described above, although the thickness of the flange 5 c ₂ of each arc-shaped belt sliding portion 5 c is set to be constant, as shown in FIG. 6 to, the belt guide anchor one 5 of the third example, the thickness of the flange 5 c ₂ of each arc-shaped belt sliding portion 5 c, the tip portion from the root 5 cu each arcuate flange 5 c ₂ 5 c It is set to become thinner continuously toward ₄ .

[0038] According to the belt guide anchor one 5 of the third example, the thickness of the flange 5 c ₂ of each arc-shaped belt sliding portion 5 c, from the root 5 en of each arcuate flange 5 c ₂ since toward the tip portion 5 c ₄ is continuously thinner, it is possible to increase the thickness of the base 5 cn of each arcuate flange 5 c _2. Thereby, the strength of the root 5 cu of each arc-shaped flange 5 c ₂ that receives the force from the seat belt 4 most, that is, the strength of the bell rod sliding portion 5 c can be set large.

[0039] Other configurations and other functions and effects of the belt guide unforce 1 of the third example are the same as those of the belt guide anchor 5 of the first example. Further, the configuration and operational effects of the seat belt apparatus 1 using the belt guide anchor 5 of the third example are the same as those of the seat belt apparatus 1 of the first example.

FIG. 7 is a sectional view similar to FIG. 3, showing a fourth example of the embodiment of the belt guide anchor according to the present invention.

In the belt guide anchor 5 of the third example shown in FIG. 6 described above, the resin cover 5 b is attached to the metal plate 5 a. However, as shown in FIG. In the same way as the belt guide force 1 in the second example, a predetermined part of the metal plate 5 a is molded with the mold resin 5 b. Yes. As a result, the belt guide anchor 5 is constructed in which the metal plate 5 a and the mold resin 5 b are more firmly and integrally joined.

[0041] According to the belt guide anchor 5 of the fourth example, the resin portion made of the mold tree 5b can be more firmly and integrally coupled to the metal plate 5a.

The other configurations and other functions and effects of the belt guide force 1 of the fourth example are the same as those of the belt guide anchors 5 of the first to third examples. Further, the configuration and operational effects of the seat belt apparatus 1 using the belt guide anchor 5 of the fourth example are the same as those of the seat belt apparatus 1 of the first example.

FIG. 8 is a sectional view similar to FIG. 3, showing a fifth example of the embodiment of the belt guide anchor according to the present invention.

In the first example of the belt guide anchor 5 shown in FIG. 3 described above, although the rear surface 5 c ₃ of each arc-shaped flange 5 c ₂ is formed in an arc shape surfaces of the convex upward, as shown in FIG. 8 Furthermore, in the belt guide anchor 5 of this fifth example, the back surface 5 c ₃ of each flange 5 C 2 is a metal plate 5 a portion 5 a ₂ that is located below the belt sliding portion 5 c. It is formed in a plane orthogonal to. In that case, each back surface 5 C 3 is set at a position slightly above the most advanced 5 c ₅ of each belt sliding surface 5 C of the flange 5 c ₂ . Therefore, each of the flanges 5 c ₂ is formed to be thick overall, and the thickness thereof is the thickest at the base 5 cn and continuously decreases toward the tip 5 c ₄ . .

[0043] According to the belt guide anchor 5 in the fifth embodiment, the thickness of each 'flange 5 c ₂ of the belt slide portion 5 c, to together when the whole of each flange 5 c ₂ is formed on the thick, Since the thickness of the base 5 cn of each arc-shaped flange 5 c ₂ is increased, the strength of each flange 5 c ₂ can be set even larger.

Other configurations and other operational effects of the belt guide anchor 5 of the fifth example are the same as those of the belt guide anchor 5 of the first example. Further, the configuration and operational effects of the seat belt apparatus 1 using the belt guide anchor 5 of the fifth example are the same as those of the seat belt apparatus 1 of the first example.

In the belt guide anchor 5 of the fifth example, the metal plate 5 a Can be molded with mold resin 5b.

FIG. 9 is a sectional view similar to FIG. 3, showing a sixth example of the embodiment of the belt guide anchor according to the present invention.

In the fifth example of the bell Bok guide anchor 5 shown in FIG. 8 described above, the back surface 5 c ₃ of each flange 5 c ₂ is above the cutting edge 5 c 5 of each belt sliding surface 5 c of the flange 5 c ₂ As shown in Fig. 9, in the belt guide unforce force 5 of this sixth example, the metal plate 5 a portion 5 a located below the belt sliding portion 5 c 5 a Each back surface 5 c ₃ formed in a plane perpendicular to ₂ is flush with the leading edge 5 c _{5 of} each belt sliding surface 5 ci (perpendicular to the left and right symmetric axis of the arcuate flange 5 c 2 Plane). Accordingly, each flange 5 c ₂ is formed to be thicker than the fifth example described above. Further, in the belt guide unforce 1 of the sixth example, as in the belt guide unforce 1 of the second example, a predetermined portion of the metal plate 5 a is molded with the mold resin 5 b. . As a result, the bell anchor guide anchor 5 is constructed in which the molded resin 5 b is firmly and integrally joined to the metal plate 5 a.

[0045] According to the belt guide anchor 5 in this sixth example, with a strong degree of each flange 5 c ₂ further can be set even larger, the mold resin 5 b to the metal plate 5 a, more firmly together Can be combined.

Other configurations and other operational effects of the belt guide anchor 5 of the sixth example are the same as those of the belt guide anchors 5 of the first example, the second example, and the fifth example described above. Further, the configuration and operational effects of the seat belt apparatus 1 using the belt guide anchor 5 of the sixth example are the same as those of the seat belt apparatus 1 of the first example. In the belt guide anchor 5 of the sixth example, a resin cover 5b can be attached to the metal plate 5a in the same manner as in the above examples.

FIG. 10 is a front view similar to FIG. 2, showing a seventh example of the embodiment of the belt guide anchor according to the present invention.

In the first example shown in FIG. 2 described above, although the belt sliding portion 5 c is extended to the central guide hole 5 and the escape hole 5 d ₂ at both ends, 5 d _3, as shown in Figure 1 1 In the seventh example of the belt guide anchor 5, the metal plate 5 a The belt sliding portion 5 c is provided only in the central guide hole 5. Also in the belt guide anchor 5 of the seventh example, the belt sliding portion 5c of the metal plate 5a is the same as the metal plate 5 of the first example, the third example, the fifth example, and the sixth example. It is formed in the same manner as the belt sliding portion 5c of a. Further, the belt guide anchor 5 of the seventh example has a resin cover 5 b attached to the metal plate 5 a as in the first to sixth examples, but the mold resin is attached to the metal plate 5 a. It can also be configured by molding 5b.

[0047] It should be noted that in the belt guide anchors of the above-described examples, the flanges 5 c 1 and 5 c are all crushed by crushing the lower edge portion of the opening hole of the metal plate 5 a and the lower portions of both side edges. Although it is assumed to form a _2, by integrally fixed to the metal plate 5 a and the separate flange metal plate to the lower edge of the metal plate 5 a opening under holes of the flanges 5 c 5 c 2 can also be formed.

'' Industrial applicability

[0048] A bell rod guide anchor and a seat belt device according to the present invention include a belt guide for guiding a seat belt pulled out from a seat bell retractor toward a shoulder of an occupant to fit the occupant. The present invention can be suitably used for a seat belt device that restrains an occupant with a seat belt guided by a guide.

Claims

The scope of the claims

1. A belt through hole through which a seat belt pulled out from a seat belt retractor is slidably passed, and a belt sliding portion having a belt sliding surface having an arcuate cross section on an upper surface, the belt passing through In the belt guide unloading force that guides the seat belt toward the occupant by the hole and the belt sliding portion,

A metal plate provided with at least an opening larger than the belt insertion hole for forming the belt through hole and the belt sliding portion;

The belt sliding portion of the metal plate has flanges projecting from the lower end edge of at least the opening of the metal plate to the vehicle inner side and the vehicle outer side, respectively.

A part of the belt sliding surface is formed on the upper surface of each flange, and a part of the lower surface of each flange is set above the forefront of the belt sliding surface of the flange, Alternatively, the belt guide anchor is set on the same plane as the forefront of the belt sliding surface of the flange.

2. The belt guide anchor according to claim 1, wherein each of the flanges is formed by crushing a portion of the metal plate at least at a lower end edge of an opening pilot hole for forming the opening.

3. The belt guide anchor according to claim 1, wherein the thickness of each flange is set to be constant or substantially constant from the root of each flange to the leading edge.

4. The belt guide anchor according to claim 1 or 2, wherein the thickness of each flange is set so as to continuously decrease from the root of each flange toward the forefront.

5. A seat belt to be mounted on an occupant, a seatbelt retractor that retracts the seatbelt so that the seatbelt can be pulled out and operates in an emergency to prevent the seatbelt from being pulled out; A belt guide anchor for guiding the seat belt to the occupant, an evening supported slidably by the seat belt that has passed the belt guide unload force, and a vehicle body or a vehicle seat. In the seatbelt device comprising at least a buckle on which the tanda is releasably locked, 5. A seat belt apparatus, wherein the belt guide anchor uses the belt guide unforced force described in any one of claims 1 to 4.