JP2010095123A - Webbing insertion member, seat belt device, and method for manufacturing webbing insertion member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive webbing insertion member having excellent slidability, a seat belt device and a method for manufacturing the webbing insertion member. <P>SOLUTION: This webbing insertion member 1 includes a core material 2 having an insertion hole 21 inserted with webbing therein, a low frictional material 3 arranged on the inner edge side of the insertion hole 21 of the core material 2, and a synthetic resin part 4 for integrating the core material 2 and the low frictional material 3. The insertion hole 21 has a straight line part 21a for guiding the drawing or winding of the webbing, and an escape part 21b for guiding the deviation of the webbing. The low frictional material 3 has a body part 31 having a cross section formed into a substantially semi-circular shape and arranged at the inner edge side of the straight line part 21a, and inclined parts 32 formed at both edges of the body 21 and arranged on the inner edge side of the escape part 21b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a webbing insertion member, a seat belt device, and a method for manufacturing a webbing insertion member used for a vehicle such as an automobile, and more particularly to a webbing insertion member, a seat belt device, and a webbing insertion member that are inexpensive and excellent in slidability. It relates to a manufacturing method.

  Vehicles such as automobiles are generally provided with a seat belt device that restrains the occupant in a seat that includes a seat portion on which the occupant sits and a backrest portion that is positioned on the back of the occupant. Such a seat belt device includes a webbing that restrains an occupant to a seat, a retractor that winds the webbing, a guide anchor that is provided on a vehicle body side and guides the webbing, and a belt anchor that fixes the webbing to the vehicle body side. And a buckle disposed on a side surface of the seat and a tongue disposed on the webbing, and the passenger is restrained by fitting the tongue to the buckle. In such a seat belt device, one end of the webbing is fixed to the belt anchor, and the other end is inserted through the guide anchor and connected to the retractor. Therefore, when the webbing is pulled out or wound up, the webbing always comes into contact with the guide anchor and slides.

  For example, as shown in Patent Document 1 and Patent Document 2, a webbing insertion member such as a guide anchor is formed by integrating a metal core material, a low friction material disposed on a sliding portion, and these members. It is often composed of a synthetic resin.

JP-A-2001-310702 Japanese Patent Laid-Open No. 2002-59808

  In the webbing insertion members described in Patent Document 1 and Patent Document 2 described above, the low friction material excellent in slidability is disposed only in the straight portion of the core material, and is disposed in the curved portions at both ends. Absent. Therefore, since it is necessary to increase the rigidity so that these curved portions do not wear or deform due to contact with the webbing, generally, synthetic resins that cover the core material are synthetic resins made of expensive and wear-resistant materials. Was used.

  Further, the webbing insertion member as described above is arranged in a mold in a state where a core material and a low friction material are combined, and is molded and integrated with a synthetic resin. At the time of molding, it is necessary to prevent the core material and the low-friction material from shifting. In Patent Document 1, an uneven engagement portion is formed, and in Patent Document 2, a leg piece portion that sandwiches the core material is formed. Is formed. Therefore, the shape of the core material and the low friction material becomes complicated, and the amount of the material to be used increases, so that the cost tends to increase.

  The present invention has been devised in view of the above-described problems, and an object thereof is to provide a webbing insertion member, a seat belt device, and a method for manufacturing a webbing insertion member that are inexpensive and excellent in slidability.

  According to the present invention, there is provided a webbing insertion member for guiding a webbing for restraining an occupant, the core member having an insertion hole through which the webbing is inserted, and a low friction disposed on an inner edge side of the insertion hole of the core member. And a synthetic resin portion that integrates the core material and the low-friction material, and the insertion hole guides the webbing drawer or winding and the webbing bias. And the low friction material has a substantially semicircular cross section and a body portion disposed on the inner edge side of the straight portion, and formed at both ends of the body portion, There is provided a webbing insertion member having an inclined portion disposed on the edge side.

  According to the present invention, there is provided a webbing insertion member that guides a webbing that restrains an occupant, the core member having an insertion hole through which the webbing is inserted, and an inner edge side of the insertion hole of the core member. A low-friction material, and a synthetic resin portion that integrates the core material and the low-friction material, and the insertion hole includes a linear portion that guides drawing or winding of the webbing, and biasing of the webbing. The low friction material has a main body portion that is substantially semicircular in cross section and disposed on the inner edge side of the linear portion, and has a portion that is fixed to the core material. No webbing insertion member is provided. Here, the low-friction material may have inclined portions that are formed at both end portions of the main body portion and are disposed on the inner edge side of the escape portion.

  In the webbing insertion member described above, the low-friction material may be formed with a guide groove along the webbing guide direction in the main body, or reduce the contact area with the webbing in the inclined part. The surface processing part to perform may be formed, and both the edge parts of a longitudinal direction may be formed so that the inner edge part of the said insertion hole may contact. Furthermore, the synthetic resin portion may have a slit portion for absorbing thermal deformation.

  Further, according to the present invention, a webbing that restrains an occupant to the seat, a retractor that winds the webbing, a guide anchor that is provided on the vehicle body side and guides the webbing, and a belt that fixes the webbing to the vehicle body side In the seat belt device, which includes an anchor, a buckle disposed on a side surface of the seat, and a tongue disposed on the webbing, and restrains the occupant by fitting the tongue to the buckle. A seat belt device is provided in which the anchor is any one of the webbing insertion members described above.

  Further, according to the present invention, the core member having the insertion hole through which the webbing for restraining the occupant is inserted, the low friction material disposed on the inner edge side of the insertion hole of the core material, the core material, and the low friction material A webbing insertion member including a synthetic resin portion integrated with a material, wherein an adsorbing material that adsorbs and fixes the low friction material to the mold is disposed, and the core material and the low The core is formed by disposing a friction material in a mold and fixing the low friction material by the adsorbent, injecting a resin material constituting the synthetic resin portion into the mold, and solidifying the resin material. There is provided a method for manufacturing a webbing insertion member, characterized in that a material and the low friction material are integrated.

  Moreover, you may make it arrange | position in the metal mold | die, making the both edges of the longitudinal direction of the said low friction material contact the inner edge part of the said insertion hole. Furthermore, the low-friction material has a substantially semicircular cross section and a main body portion disposed on the inner edge side of the linear portion, and an inclination formed on both end portions of the main body portion and disposed on the inner edge side of the relief portion. The low friction material may be fixed by bringing the inclined portion into contact with the mold.

  According to the webbing insertion member according to the present invention described above, by forming the inclined portion in the low friction material, the portion that easily contacts the webbing can be protected by the low friction material, and the webbing and the synthetic resin are contacted. It is possible to provide a webbing insertion member that can be made difficult, can be made of a low-priced synthetic resin that has lower wear resistance than conventional ones, and is inexpensive and excellent in slidability.

  Moreover, according to the manufacturing method of the webbing insertion member according to the present invention described above, since the adsorbent is used for fixing the low friction material, it is not necessary to fix the core material and the low friction material to each other. This structure can be simplified, and the low friction material can be easily fixed at the time of molding. Therefore, as the webbing insertion member according to the present invention, a low friction material that does not have a portion to be fixed to the core material can be used, the structure can be simplified and the material can be reduced, and the cost can be reduced. .

  Moreover, the shift | offset | difference of the left-right direction (longitudinal direction) of the low friction material at the time of shaping | molding can be suppressed by making the both edges of the longitudinal direction of a low friction material contact the inner edge part of an insertion hole. In addition, when the low friction material has an inclined portion, the convex portion of the mold can be brought into contact with the concave portion constituted by the inclined portion of the low friction material and the main body portion. The shift in the direction (longitudinal direction) can be suppressed.

  Also, by forming guide grooves and surface processed parts in the low friction material, the webbing can be effectively guided, the webbing can be smoothly slid, and the resistance during webbing sliding is reduced. Can do. Furthermore, by forming slits in the synthetic resin part, it is possible to effectively absorb the thermal deformation of the synthetic resin due to thermal shrinkage and thermal expansion, and even when using inexpensive synthetic resin, Deformation can be suppressed.

  Further, according to the above-described seat belt device according to the present invention, it is possible to provide a seat belt device having a guide anchor that is inexpensive and excellent in slidability by using the above-described webbing insertion member as a guide anchor. .

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. Here, FIG. 1 is a figure which shows 1st embodiment of the webbing penetration member which concerns on this invention, (A) is a front view, (B) shows BB sectional drawing in FIG. 1 (A). ing. In addition, in FIG. 1 (A), the core material 2 is shown with the dotted line.

  The webbing insertion member 1 of the present invention shown in FIGS. 1A and 1B is arranged on a core member 2 having an insertion hole 21 through which the webbing is inserted, and on the inner edge side of the insertion hole 21 of the core member 2. A low-friction material 3, a synthetic resin portion 4 that integrates the core material 2 and the low-friction material 3, and the insertion hole 21 includes a linear portion 21 a that guides drawing or winding of the webbing, and biasing of the webbing The low friction material 3 has a substantially semicircular cross section and is formed at both ends of the main body 31 and a main body 31 disposed on the inner edge side of the straight portion 21a. And an inclined portion 32 disposed on the inner edge side of the escape portion 21b.

  The core member 2 is a plate made of metal or resin, and is a member constituting the main body shape of the webbing insertion member 1. Accordingly, the core member 2 has an insertion hole 21 through which the webbing is inserted, and a locking hole 22 for fixing the webbing insertion member 1 to a pillar or the like. The form of the webbing insertion member 1 shown in FIG. 1 (A) finally becomes a shape in which a synthetic resin is molded on the core material 2, and therefore, as shown in FIG. 1 (A), the webbing insertion member 1 The insertion hole 11 is formed smaller than the insertion hole 21 of the core member 2. Moreover, the insertion holes 21 and 11 have the linear parts 21a and 11a and the escape parts 21b and 11b as mentioned above. The straight portions 21a and 11a are mainly portions that smoothly guide the drawing or winding of the webbing. Further, the escape portions 21b and 11b are mainly formed so that the webbing is pulled to one side during a vehicle collision or sudden braking and is biased to one side so that the webbing does not overlap and become clogged in the insertion holes 21 and 11. Yes.

  The low friction material 3 is a metal member having a substantially semicircular cross section, and is a member that smoothly slides the webbing. Since the low friction material 3 is a portion where the webbing slides, wear resistance and lubricity are required, and therefore, the low friction material 3 is preferably made of metal rather than resin. Alternatively, the surface of the low friction material 3 may be coated with a fluororesin or ceramics, or plated with nickel or chrome to positively form a low friction layer. Further, a flange 33 is formed on the outer periphery of the low friction material 3. A part of the flange 33 is embedded in the synthetic resin portion 4 and integrated with the core material 21 as shown in FIG.

  The webbing insertion member 1 according to the present invention is characterized in that the inclined portions 32 are formed at both ends of the low friction material 3. As shown in FIG. 1A, the inclined portion 32 is arranged so as to cover a part of the escape portion 21 b of the insertion hole 21. Conventionally, this portion has been constituted by the synthetic resin portion 4, but since there are many opportunities to come in contact with the webbing and wear easily, an expensive synthetic resin (for example, polyamide such as nylon) having wear resistance has been used. . In addition, since the synthetic resin portion 4 is integrally formed by injection molding, an expensive synthetic resin has to be used for a portion that does not come into contact with the webbing, which increases the cost. Therefore, the low-friction material 3 covers the relief portion 21b that easily contacts the webbing so that an inexpensive synthetic resin (for example, polypropylene) can be used for the synthetic resin portion 4. The inclined portion 32 may be formed on the entire circumference of the escape portion 21b, or may be formed on a part of the escape portion 21b as shown in FIG. Further, the inclined portion 32 needs to be formed at least on the front side of the front surface 1a and the rear side of the back surface 1b of the webbing insertion member 1, which is the portion most easily rubbed with the webbing. Furthermore, as shown in FIG. 1 (A), by forming the inclined portion 32 on the back side of the front surface 1a and the front side of the back surface 1b of the webbing insertion member 1 to form the low friction material 3 symmetrically, for example, The webbing insertion member 1 that can be applied to both the driver seat and the passenger seat can be manufactured, which is excellent in convenience.

  Further, the webbing insertion member 1 of the present invention is characterized in that the low friction material 3 does not have a portion fixed to the core material 2. As shown in FIG. 1 (B), the low friction material 3 has a substantially semicircular cross section and a simple shape in which the flange 33 is formed on the outer periphery. Therefore, unlike the prior art, there is no need to form the leg pieces for sandwiching the core material 2 or the concavo-convex portions that engage with the core material 2, and the structure can be simplified and the material can be reduced. In the webbing insertion member 1 of the present invention, instead of molding the synthetic resin after mechanically connecting the core material 2 and the low friction material 3, each of the core material 2 and the low friction material 3 is individually molded. The synthetic resin is molded so that it can be fixed to the surface. As a result, the fixing portion between the core material 2 and the low friction material 3 could be omitted. A method for manufacturing the webbing insertion member 1 according to the present invention will be described later.

  Here, FIG. 2 is a figure which shows the modification of a webbing penetration member, (A) has shown the 1st modification, (B) has shown the 2nd modification. In addition, in each figure, about the same component as the component shown in FIG. 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  A first modification of the webbing insertion member 1 shown in FIG. 2A is formed by forming a plurality of guide groove portions 34 along the webbing guide direction in the main body portion 31 of the low friction material 3. Generally, since the webbing insertion member 1 is disposed on the side surface portion of the occupant, the webbing is inserted into the insertion hole 11 from the rear side of the back surface 1b of the webbing insertion member 1 toward the front side of the front surface 1a. Slide on the low friction material 3. Therefore, as shown in FIG. 2A, the guide groove 34 is preferably formed from the rear of the back surface 1b of the webbing insertion member 1 toward the front of the front surface 1a. By forming the guide groove portion 34, the webbing can be effectively guided and the webbing can be smoothly slid.

  The webbing insertion member 1 shown in FIG. 2 (B) has a second modification example in addition to the first modification example of the webbing insertion member 1 shown in FIG. The surface processing part 35 which reduces a contact area is formed. Here, the surface processed portion 35 is formed by forming a plurality of grooves perpendicular to the axial direction of the inclined portion 32, but a plurality of grooves along the axial direction of the inclined portion 32 may be formed. A mesh-like groove may be formed, or a plurality of depressions may be formed. By forming the surface processed portion 35, the frictional resistance can be further reduced, the webbing can be effectively released, and the webbing can be smoothly slid.

  The synthetic resin portion 4 is a member that integrates the core material 2 and the low friction material 3 as shown in FIG. As described above, an expensive synthetic resin (for example, polyamide such as nylon) having wear resistance has been conventionally used. However, an inexpensive synthetic resin (for example, polypropylene) is used in the present invention. Further, when an inexpensive synthetic resin such as polypropylene is used, thermal deformation may easily occur due to thermal expansion or contraction. Therefore, a slit portion 41 for absorbing thermal deformation may be formed in the synthetic resin portion 4.

  Here, FIG. 3 is a figure which shows the modification of a webbing penetration member, (A) has shown the 3rd modification, (B) has shown the 4th modification. In addition, in each figure, about the same component as the component shown in FIG. 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. Moreover, the webbing insertion member 1 shown in FIGS. 3A and 3B illustrates the back surface 1 b of the webbing insertion member 1.

  In the third modification of the webbing insertion member 1 shown in FIG. 3A, a slit portion 41 in the direction perpendicular to the longitudinal direction of the insertion hole 11 (X direction in the figure) is formed in the shoulder 1c of the webbing insertion member 1. It is a thing. As shown in FIG. 3A, the slit portion 41 is configured, for example, by forming a convex portion 41a and a concave portion 41b in a portion where a part of the synthetic resin portion 4 is cut out. When the slit portion 41 is formed on the surface 1 a of the webbing insertion member 1, it is not preferable in terms of design because it touches the eyes of the occupant. Of course, the slit portion 4 may be formed in a shape excellent in design and may be positively formed on the surface 1 a of the webbing insertion member 1. According to the third modification of the webbing insertion member 1, it is possible to effectively absorb the thermal deformation in the width direction (X direction in the figure) of the synthetic resin portion 4 due to thermal contraction or thermal expansion. Even when a synthetic resin is used, thermal deformation of the webbing insertion member 1 can be suppressed.

  In the fourth modified example of the webbing insertion member 1 shown in FIG. 3B, a slit portion 41 is formed along the longitudinal direction of the insertion hole 11 in the shoulder portion 1 c of the webbing insertion member 1. Since the fourth modification is obtained by changing the direction of the slit portion 41 of the third modification described above, and the other parts have the same configuration, detailed description thereof is omitted here. According to the fourth modification of the webbing insertion member 1, it is possible to effectively absorb thermal deformation in the height direction (Y direction in the figure) of the synthetic resin portion 4 due to thermal contraction or thermal expansion, and an inexpensive material. Even when this synthetic resin is used, thermal deformation of the webbing insertion member 1 can be suppressed. In addition, the structure of the slit part 41 is not limited to what was shown in figure, You may combine the 3rd modification and the 4th modification, and the slit part 41 is other than X direction or a Y direction. The webbing insertion member 1 may be formed at a portion other than the shoulder 1c.

  Next, the manufacturing method of the webbing insertion member according to the present invention will be described. Here, FIG. 4 is a figure which shows the manufacturing method of the webbing penetration member which concerns on this invention, (A) is a component arrangement | positioning process, (B) is a metal mold assembly process, (C) is a resin material injection | pouring process. Show. In addition, in each figure, about the same component as the component shown in FIG. 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  The method for manufacturing the webbing insertion member 1 of the present invention shown in FIG. 4 is arranged on the inner side of the core member 2 having the insertion hole 21 through which the webbing for restraining the occupant is inserted, and the insertion hole 21 of the core member 2. A method of manufacturing a webbing insertion member 1 including a low friction material 3 and a synthetic resin portion 4 that integrates the core material 2 and the low friction material 3, wherein the low friction material 3 is adsorbed to a mold 5. The adsorbent 6 to be fixed is arranged, the core material 2 and the low friction material 3 are arranged in the mold 5 and the low friction material 3 is fixed by the adsorbent 6, and the resin material constituting the synthetic resin portion 4 is made of gold. The core material 2 and the low friction material 3 are integrated by pouring into the mold 5 and solidifying the resin material.

  4A, the core material 2 and the low friction material 3 are arranged and fixed on the lower mold 51 of the mold 5. In the component arrangement process shown in FIG. In the present invention, since the core material 2 and the low friction material 3 are not combined, the adsorbing material 6 is disposed in the lower mold 51 in order to fix the position of the low friction material 3. The adsorbent 6 is, for example, a magnet such as a permanent magnet or an electromagnet. Further, if the surface of the adsorbent 6 is formed so as to follow the shape of the low friction material 3, the low friction material 3 can be more stably fixed. The adsorbent 6 is fixed to the lower mold 51 with an adhesive, a screw mechanism, a bolt, or the like. By arranging the adsorbing material 6 in the mold 5, it is not necessary to fix the core material 2 and the low friction material 3 to each other as shown in FIG. 4A, and the structure of these parts is simplified. In addition, the low friction material 3 can be easily fixed. Further, when the inclined portion 32 is formed in the low friction material 3, the low friction material 3 is formed with a concave portion by the main body portion 31 and the inclined portion 32, so that the low friction material is formed by the convex portion 53 of the lower mold 51. 3 can be prevented from shifting in the left-right direction (longitudinal direction) (see FIG. 5A). In addition, the core material 2 is fixed by being fitted in the uneven part formed in the mold 5.

  In the mold assembling step shown in FIG. 4B, the upper mold 52 is fixed to the lower mold 51 on which the core material 2 and the low friction material 3 are arranged. Through this process, the core material 2 and the low friction material 3 can be fixed in the mold 5. In addition, a resin material injection port 54 is formed by the combination of the lower mold 51 and the upper mold 52. In addition, a space for pouring the resin material is formed in a portion to be molded with the synthetic resin around the core material 2 and the low friction material 3.

  In the resin material injection step shown in FIG. 4C, the resin material is injected into the mold 5 from the injection port 54. A resin material is injected into the space of the portion to be molded with the synthetic resin around the core material 2 and the low friction material 3, and after cooling and solidifying the synthetic resin, the lower mold 51 and the upper mold 52 are separated to form a mold. The webbing insertion member 1 is taken out from the mold 5. With this procedure, the webbing insertion member 1 of the present invention shown in FIG. 1 and the like can be easily manufactured. In addition, by forming the injection port 54 on the back side of the low friction material 3 and injecting the resin material, the low friction material 3 can be pressed against the convex portion 53 and the like, and the shift of the low friction material 3 during molding is prevented. It can also be reduced.

  Here, FIG. 5 shows a plan view in the component placement step, where (A) shows the first embodiment, (B) shows the fifth modification, and (C) shows the sixth modification. Yes. In addition, in each figure, about the same component as the component shown in FIG. 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  In the first embodiment of the webbing insertion member 1 shown in FIG. 5A, the core material 2 and the low friction material 3 are arranged on the lower mold 51, and the low friction material 3 is fixed by the adsorbing material 6. . For example, the adsorbent 6 has a substantially cylindrical shape as shown in FIGS. 4A and 5A, and a plurality of adsorbents 6 are arranged along the low friction material 3. Of course, the adsorbent 6 may be constituted by a single adsorbent 6 formed along the low friction material 3. In the first embodiment, since the inclined portion 32 is formed in the low friction material 3, the low friction material 3 has a concave portion formed by the main body portion 31 and the inclined portion 32, and the convex portion 53 of the lower mold 51. And the shift | offset | difference of the left-right direction (longitudinal direction) of the low friction material 3 can be suppressed. The convex portion 53 is a portion for molding the synthetic resin in the insertion hole 21 of the core material 2 to form the insertion hole 11 having a predetermined shape.

  The fifth modification of the webbing insertion member 1 shown in FIG. 5B shows a case where the low friction material 3 does not have the inclined portion 32. As shown in FIG. 5B, the method for manufacturing the webbing insertion member 1 according to the present invention can be applied even when the low friction material 3 is composed of only the main body 31. That is, by using the adsorbent 6 for fixing the low friction material 3, it is not necessary to fix the core material 2 and the low friction material 3 to each other, and the structure of these parts can be simplified and molded. The low friction material 3 can be easily fixed at the time.

  In the sixth modification of the webbing insertion member 1 shown in FIG. 5 (C), both edges in the longitudinal direction of the low friction material 3 are brought into contact with the inner edge of the insertion hole 21 of the core material 2 in the mold 5. It is arranged. Specifically, the flange portion 33 of the low friction material 3 is extended so as to contact the inner edge portion of the insertion hole 21 of the core material 2. Thus, by bringing both edges of the low friction material 3 into contact with the inner edge of the insertion hole 21, the low friction material 3 can be held between the core material 2 and the convex portion 53 of the mold 5. The displacement of the material can be effectively suppressed. Even in the case of the low friction material 3 having only the main body 31 as in the fifth modification shown in FIG. 5B, the core material 2 is inserted through both edges in the longitudinal direction of the low friction material 3. The same effect can be obtained by placing it in the mold 5 in contact with the inner edge of the hole 21.

  Finally, the seat belt device according to the present invention will be described. Here, FIG. 6 is an overall configuration diagram showing the seat belt device according to the present invention. Note that the same components as those shown in FIG. 1 are denoted by the same reference numerals and redundant description is omitted.

  The seat belt device of the present invention shown in FIG. 6 includes a webbing 71 that restrains an occupant to the seat 7, a retractor 72 that winds the webbing 71, a guide anchor 73 that is provided on the vehicle body side and guides the webbing 71, By having a belt anchor 74 for fixing the webbing 71 to the vehicle body side, a buckle 75 disposed on the side surface of the seat 7, and a tongue 76 disposed on the webbing 71, the tongue 76 is fitted to the buckle 75. A seat belt device that restrains an occupant with a webbing 71, and uses the above-described webbing insertion member 1 according to the present invention (first embodiment, first to sixth modifications) as a guide anchor 73. .

  The seat 7 includes, for example, a seat 7a on which an occupant sits, a backrest 7b located on the back of the occupant, and a headrest 7c that supports the occupant's head. For example, the retractor 72 is incorporated in the backrest portion 7b of the seat 7. In general, the buckle 75 is often disposed on the side surface of the seat 7a, and the belt anchor 74 is often disposed on the lower surface of the seat 7a. Further, the guide anchor 73 is often disposed on the B pillar 7d of the vehicle body. The webbing 71 has one end connected to the belt anchor 74 and the other end connected to the retractor 72 via the guide anchor 73. Therefore, when the tongue 76 is fitted to the buckle 75, the webbing 71 is pulled out from the retractor 72 while sliding through the insertion hole 21 of the guide anchor 73. Further, when the seat belt is released as when the passenger gets off, the webbing 71 is rewound onto the retractor 72 while sliding through the insertion hole 21 of the guide anchor 73. Further, when the vehicle collides or suddenly brakes, the occupant is pushed in the traveling direction by the inertial force, so that the webbing 71 is pulled forward and tends to be biased to one side in the insertion hole 21.

  In the seat belt device of the present invention, since the above-described webbing insertion member 1 of the present invention is used for the guide anchor 73, it is excellent in slidability and wear resistance. Not only at the time of winding, but also at the time of vehicle collision and sudden braking, it exhibits an excellent effect. In addition, by devising the manufacturing method of the webbing insertion member 1 and the shape of the low friction material 3, the structure of the core material 2 and the low friction material 3 can be simplified, and the synthetic resin portion 4 has a low cost synthetic resin. The guide anchor 73 can be effectively reduced in cost, and the cost of the seat belt device can be reduced.

  The present invention is not limited to the above-described embodiments, and the present invention may be applied to the webbing insertion member 1 or the seat belt device used for a vehicle other than a vehicle, and is adsorbed to fix the core material 2 to the mold 5. Of course, various modifications can be made without departing from the spirit of the present invention, such as the use of the material 6.

It is a figure which shows 1st embodiment of the webbing penetration member which concerns on this invention, (A) is a front view, (B) has shown BB sectional drawing in FIG. 1 (A). It is a figure which shows the modification of a webbing penetration member, (A) has shown the 1st modification, (B) has shown the 2nd modification. It is a figure which shows the modification of a webbing insertion member, (A) has shown the 3rd modification, (B) has shown the 4th modification. It is a figure which shows the manufacturing method of the webbing penetration member which concerns on this invention, (A) is a component arrangement | positioning process, (B) shows a metal mold | die assembly process, (C) has shown the resin material injection | pouring process. The top view in a component arrangement | positioning process is shown, (A) shows 1st embodiment, (B) shows the 5th modification, (C) has shown the 6th modification. 1 is an overall configuration diagram showing a seat belt device according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Webbing insertion member 1a Front surface 1b Back surface 1c Shoulder part 2 Core material 3 Low friction material 4 Synthetic resin part 5 Mold 6 Adsorbent material 7 Seat 7a Seat part 7b Backrest part 7c Headrest part 7d B pillar 11,21 Insertion hole 11a, 21a Linear portion 11b, 21b Escape portion 22 Locking hole 31 Main body portion 32 Inclined portion 33 Gutter portion 34 Guide groove 35 Surface processed portion 41 Slit portion 41a Convex portion 41b Concavity 51 Lower die 52 Upper die 53 Convex portion 54 Inlet 71 Webbing 72 Retractor 73 Guide anchor 74 Belt anchor 75 Buckle 76 Tongs

Claims (11)

A webbing insertion member for guiding a webbing that restrains an occupant,
A core material having an insertion hole through which the webbing is inserted, a low friction material disposed on an inner edge side of the insertion hole of the core material, and a synthetic resin portion that integrates the core material and the low friction material; With
The insertion hole has a linear part that guides the drawing or winding of the webbing, and an escape part that guides the bias of the webbing,
The low-friction material has a substantially semicircular cross section and a main body portion disposed on the inner edge side of the linear portion, and an inclined portion formed on both end portions of the main body portion and disposed on the inner edge side of the escape portion. ,
A webbing insertion member characterized by comprising: A webbing insertion member for guiding a webbing that restrains an occupant,
A core material having an insertion hole through which the webbing is inserted, a low friction material disposed on an inner edge side of the insertion hole of the core material, and a synthetic resin portion that integrates the core material and the low friction material; With
The insertion hole has a linear part that guides the drawing or winding of the webbing, and an escape part that guides the bias of the webbing,
The low-friction material has a body part that is substantially semicircular in cross section and is disposed on the inner edge side of the linear part, and does not have a portion that is fixed to the core material.
A webbing insertion member characterized by that.   3. The webbing insertion member according to claim 2, wherein the low friction material has inclined portions that are formed at both end portions of the main body portion and are disposed on an inner edge side of the escape portion.   The webbing insertion member according to claim 1 or 2, wherein the low-friction material has a guide groove formed along the guide direction of the webbing in the main body.   4. The webbing insertion member according to claim 1, wherein the low-friction material is formed with a surface processed portion that reduces a contact area with the webbing at the inclined portion.   3. The webbing insertion member according to claim 1, wherein the low friction material is formed such that both edges in the longitudinal direction are in contact with an inner edge of the insertion hole.   The webbing insertion member according to claim 1, wherein the synthetic resin portion has a slit portion for absorbing thermal deformation. A webbing for restraining an occupant to the seat; a retractor for winding the webbing; a guide anchor provided on the vehicle body side for guiding the webbing; a belt anchor for fixing the webbing to the vehicle body side; and a side surface of the seat. In a seat belt device that has a buckle disposed and a tongue disposed on the webbing, and restrains the occupant by fitting the tongue to the buckle.
8. The seat belt device according to claim 1, wherein the guide anchor is the webbing insertion member according to any one of claims 1 to 7. Synthetic resin that integrates a core material having an insertion hole through which a webbing for restraining an occupant is inserted, a low friction material disposed on an inner edge side of the insertion hole of the core material, and the core material and the low friction material A method for manufacturing a webbing insertion member comprising:
An adsorbing material for adsorbing and fixing the low friction material to the mold is disposed, the core material and the low friction material are disposed in the mold, and the low friction material is fixed by the adsorbing material, and the synthesis is performed. A method of manufacturing a webbing insertion member, wherein the core material and the low friction material are integrated by injecting a resin material constituting a resin portion into the mold and solidifying the resin material.   The method for manufacturing a webbing insertion member according to claim 9, wherein both edges in the longitudinal direction of the low friction material are in contact with an inner edge of the insertion hole and are arranged in the mold. The low-friction material has a substantially semicircular cross section and a main body portion disposed on the inner edge side of the linear portion, and an inclined portion formed on both end portions of the main body portion and disposed on the inner edge side of the escape portion. The method for manufacturing a webbing insertion member according to claim 9, wherein the low friction material is fixed by bringing the inclined portion into contact with the mold.