JP2018144541A - Anchor device for seatbelt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchor device for a seatbelt which can improve the durability of a noise prevention function of a stopper.SOLUTION: An anchor device for a seatbelt which is fixed to a stud arranged at a vehicle body comprises: an anchor plate in which a first opening to which a webbing of the seatbelt is fixed, and a key-hole shaped second opening having an expansion part and a slit part are formed; and a stopper which is attached to the anchor plate, and composed of a metal-made plate spring, being a stopper including a lock piece for permitting the passage of a head part when the anchor plate is moved along an extension direction of the slit part in a state that the head part of the stud is inserted into the expansion part of the second opening, and prohibiting a return of the head part to the expansion part when a shaft part of the stud is located at the slit part, and an energization piece which is interposed between the head part and the anchor plate when the shaft part is located at the slit part, and energizes the head part to a direction in which the head part is separated from the anchor plate.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an anchor device for a seat belt fixed to a stud provided on a vehicle body.

  In a vehicle, an end portion of a seat belt may be coupled to a vehicle body via a seat belt anchor device. For example, Patent Document 1 discloses a seat belt anchor device 110 as shown in FIGS. 11 and 12.

  Specifically, the vehicle body is provided with a stud 100 having a large-diameter head portion 101 and a small-diameter shaft portion 102. The seat belt anchor device 110 is fixed to the stud 100 and includes an anchor plate 120 and a stopper 130 made of a leaf spring. The stopper 130 is attached to the anchor plate 120 by a rivet 140.

  The anchor plate 120 is formed with a first opening 121 to which a seat belt webbing is fixed and a keyhole-shaped second opening 122. The second opening 122 includes an enlarged portion 123 through which the head 101 of the stud 100 is inserted, and a slit portion 124 that extends from the enlarged portion 123 in the direction opposite to the first opening 121. The width of the slit portion 124 is slightly larger than the diameter of the shaft portion 102 of the stud 100 and smaller than the diameter of the head portion 101 of the stud 100.

  The stopper 130 extends in the extending direction of the slit portion 124 so as to cover the second opening 122. The stopper 130 has a locking piece 131 at substantially the center and a pressing piece 132 at the lower end. When the anchor plate 120 is moved upward along the extending direction of the slit portion 124 in a state where the head portion 101 of the stud 100 is inserted through the enlarged portion 123 of the second opening 122, the locking piece 131 is 101 is allowed to pass, and the head portion 101 is prevented from returning to the enlarged portion 123 when the shaft portion 102 of the stud 100 is positioned in the slit portion 124. The pressing piece 132 presses the head 101 and presses it against the anchor plate 120 when the shaft portion 102 is positioned in the slit portion 124. Thereby, it is prevented that the anchor plate 120 vibrates with respect to the stud 100 and abnormal noise is generated.

US Pat. No. 7,540,536

  As described above, in the anchor device 110 shown in FIGS. 11 and 12, a part of the stopper 130 covering the second opening 122 is the pressing piece 132. For this reason, after the anchor device 110 is fixed to the stud 100, even if the anchor device 110 is covered with the cover, when the foot or luggage of the vehicle occupant hits the stopper 130 through the cover, the stopper 130 May be deformed and the pressing force of the pressing piece 132 may decrease. Such a decrease in the pressing force reduces the noise prevention function of the stopper 130.

  Then, an object of this invention is to provide the anchor apparatus for seatbelts which can improve the durability of the noise prevention function of a stopper.

  In order to solve the above problems, an anchor device for a seat belt of the present invention is an anchor device for a seat belt that is fixed to a stud provided on a vehicle body and having a shaft portion and a head having a larger diameter than the shaft portion. A first opening in which the webbing of the seat belt is fixed, an enlarged portion through which the head of the stud is inserted, and a shaft portion of the stud extending from the enlarged portion in a direction opposite to the first opening An anchor plate formed with a keyhole-shaped second opening having a slit portion through which the head cannot pass, and a stopper made of a metal leaf spring attached to the anchor plate, the stud When the anchor plate is moved along the extending direction of the slit portion in a state where the head portion is inserted through the enlarged portion of the second opening, the passage of the head portion is prevented. And a locking piece that prevents the head from returning to the enlarged portion when the shaft portion of the stud is located in the slit portion, and the head portion when the shaft portion is located in the slit portion. And a stopper including a biasing piece interposed between the anchor plates and biasing the head in a direction away from the anchor plate.

  According to the above configuration, when the anchor device is fixed to the stud, the anchor plate is pressed against the vehicle body by the biasing force of the biasing piece of the stopper. Therefore, it is prevented that the anchor plate vibrates with respect to the stud and abnormal noise is generated. In addition, since the biasing piece is interposed between the stud head and the anchor plate, the stud head prevents a vehicle occupant's foot or luggage from hitting the biasing piece directly or through the cover. The That is, the head of the stud serves to protect the biasing piece of the stopper. Therefore, the durability of the stopper's abnormal noise prevention function can be improved.

  The biasing piece includes an inclined portion that inclines away from the anchor plate in a first direction that is a direction from the enlarged portion toward the slit portion, and the first parallel to the anchor plate from the inclined portion. A pressing portion that extends in a direction and contacts the head when the shaft portion of the stud is located in the slit portion may be included. According to this configuration, since the biasing piece comes into contact with the head of the stud over a wide area, it is possible to enhance the noise prevention effect.

  The inclined portion and the pressing portion may be provided in pairs so as to be located on both sides of the slit portion, and the ends of the pair of pressing portions may be connected by a bridge portion. According to this structure, since the pressing part exists on both sides of the slit part, even if the anchor plate is inclined with respect to the stud, the biasing piece can stably bias the head of the stud. And since the load concerning the biasing piece which biases the head of a stud is disperse | distributed, the fall of the elasticity of a biasing piece can be suppressed.

  For example, the stopper includes a first plate-shaped portion that contacts the anchor plate, a second plate-shaped portion that faces the first plate-shaped portion with a gap, and a direction from the enlarged portion toward the slit portion. The first plate-like portion includes a folded portion that connects the second plate-like portion, the locking piece is provided on the second plate-like portion, and the biasing piece is the first plate. It may be provided in the shape part.

  The first plate-like portion may include a base portion that makes surface contact with the anchor plate around the biasing piece, and the folded portion may be connected to the base portion. According to this configuration, the urging force of the urging piece can be easily adjusted.

  ADVANTAGE OF THE INVENTION According to this invention, durability of the noise prevention function of a stopper can be improved.

It is the perspective view seen from the front side of the anchor device for seatbelts concerning a 1st embodiment of the present invention. It is the disassembled perspective view which looked at the anchor apparatus shown in FIG. 1 from the back side. It is sectional drawing along the III-III line of FIG. It is sectional drawing of the state just before the anchor apparatus shown in FIG. 1 is fixed to a stud. It is sectional drawing of the state in the middle of the anchor apparatus shown in FIG. 1 being fixed to a stud. It is sectional drawing of the state after the anchor apparatus shown in FIG. 1 was fixed to the stud. It is a perspective view of the state after the anchor apparatus shown in FIG. 1 was fixed to the stud. It is the perspective view seen from the front side of the anchor device for seatbelts concerning a 2nd embodiment of the present invention. It is the disassembled perspective view which looked at the anchor apparatus shown in FIG. 6 from the back side. It is sectional drawing along the VIII-VIII line of FIG. It is sectional drawing of the state just before the anchor apparatus shown in FIG. 6 is fixed to a stud. It is sectional drawing of the state in the middle of the anchor apparatus shown in FIG. 6 being fixed to a stud. It is sectional drawing of the state after the anchor apparatus shown in FIG. 6 was fixed to the stud. It is a perspective view of the state after the anchor apparatus shown in FIG. 6 was fixed to the stud. It is a perspective view of the conventional anchor device for seatbelts. It is sectional drawing of the state in which the anchor apparatus shown in FIG. 11 was fixed to the stud.

(First embodiment)
1 to 3 show a seat belt anchor device 1A according to a first embodiment of the present invention. As shown in FIGS. 4C and 5, the anchor device 1 </ b> A is fixed to a stud 6 provided in the vehicle body 5.

  The stud 6 has a large-diameter head 61 and a small-diameter shaft portion 62. In the present embodiment, the stud 6 has a flange 63 at a position along the vehicle body 5, and an anchor plate 2 described later is pressed against the flange 63. However, the flange 63 can be omitted, and the anchor plate 2 may be pressed directly against the vehicle body 5.

  The anchor device 1A includes an anchor plate 2 and a stopper 3 made of a metal leaf spring. The stopper 3 is attached to the anchor plate 2 by rivets 4. Although the metal which comprises the stopper 3 is not specifically limited, For example, it is steel.

  The anchor plate 2 is formed with a first opening 21 to which a seat belt webbing (not shown) is fixed and a keyhole-shaped second opening 22 (see FIG. 2). The second opening 22 includes a circular enlarged portion 23 through which the head 61 of the stud 6 is inserted, and a slit portion 24 extending from the enlarged portion 23 in the direction opposite to the first opening 21. The width of the slit portion 24 is slightly larger than the diameter of the shaft portion 62 of the stud 6 and smaller than the diameter of the head portion 61 of the stud 6. Accordingly, the shaft portion 62 can pass through the slit portion 24 (can enter the slit portion 24 from the enlarged portion 23), but the head portion 61 cannot pass through the slit portion 24.

  In the following, for the sake of convenience of explanation, the extending direction of the slit portion 24 is the vertical direction (the first direction from the enlarged portion 23 toward the slit portion 24 is the downward direction, and the opposite second direction is the upward direction based on FIG. ) And the width direction of the slit portion 24 is referred to as the left-right direction.

  The stopper 3 overlaps the anchor plate 2 on the lower side from between the first opening 21 and the second opening 22 of the anchor plate 2 and has the same size as that portion. A pair of left and right through holes 25 through which the rivet 4 is inserted are provided on both sides of the upper vertex of the enlarged portion 23 of the second opening 22 of the anchor plate 2. On the other hand, a pair of left and right through holes 38 through which the rivet 4 is inserted are also provided on the top of the stopper 3. The stopper 3 is attached to the anchor plate 2 by inserting the rivet 4 into the through hole 25 and the through hole 38 in a state where the through holes 25 and the through hole 38 are aligned and crimping.

  A tongue-shaped opening 30 is provided in the approximate center of the stopper 3. The U-shaped contour of the tongue-shaped opening 30 substantially matches the contour of the slit portion 24 of the second opening 22. That is, the width of the tongue-shaped opening 30 is approximately the same as the width of the slit portion 24 of the second opening 22.

  The stopper 3 includes a locking piece 31 protruding downward toward the tongue-shaped opening 30 and a U-shaped biasing piece 32 surrounding the tongue-shaped opening 30. The locking piece 31 is at a position corresponding to the enlarged portion 23 of the second opening 22 of the anchor plate 2 and at a position separated from the surface of the anchor plate 2. The stopper 3 includes an operation piece 39 that is continuous with the locking piece 31, and the operation piece 39 protrudes upward in reverse to the locking piece 31.

  The lower end, which is the tip of the locking piece 31, is bent toward the anchor plate 2. In the locking piece 31, the anchor plate 2 is moved upward along the extending direction of the slit portion 24 in a state where the head 61 of the stud 6 is inserted through the enlarged portion 23 of the second opening 22 (see FIG. 4A). The head 61 is allowed to pass while being in contact with the head 61 by elastically deforming away from the anchor plate 2 (see FIG. 4B). Furthermore, the locking piece 31 is disposed so as to prevent the head 61 from returning to the enlarged portion 23 when the shaft portion 62 of the stud 6 is positioned in the slit portion 24 as shown in FIG. 4C.

  Since the head 61 cannot pass through the slit portion 24, the state where the stud 6 is inserted through the second opening 22 is maintained, and the anchor device 1 </ b> A is fixed to the stud 6 provided in the vehicle body 5.

  When the anchor device 1A is removed from the stud 6, if the operating piece 39 is pushed and elastically deformed so as to approach the anchor plate 2 from the state shown in FIG. 4C, the locking piece 31 is separated from the anchor plate 2. Thereby, the head 61 of the stud 6 is allowed to return to the enlarged portion 23. As described above, the anchor device 1A of the present embodiment is configured to be able to operate the operation piece 39 from the upper side of the anchor plate 2, that is, the side close to the occupant. On the other hand, in the conventional anchor device 110 shown in FIGS. 11 and 12, the locking piece 131 is separated from the anchor plate 120 by operating the lower end of the anchor plate 120, that is, the pressing piece 132 on the side away from the occupant. The stopper 130 needs to be elastically deformed. For this reason, the anchor device 1A of the present embodiment has better operability than the conventional anchor device 110.

  The biasing piece 32 is interposed between the head 61 and the anchor plate 2 when the shaft portion 62 of the stud 6 is positioned at the end of the slit portion 24, and attaches the head 61 in a direction away from the anchor plate 2. By energizing, relative vibration between the stud 6 and the anchor plate 2 is suppressed.

  More specifically, the urging piece 32 includes a pair of left and right fulcrum portions 33, a pair of left and right inclined portions 34, a pair of left and right pressing portions 35, and a bridge portion 36 in order from the upper side. The pair of fulcrum portions 33 are separated from each other with the tongue-shaped opening 30 interposed therebetween. The same applies to the pair of inclined portions 34 and the pair of pressing portions 35. That is, the fulcrum part 33, the inclined part 34, and the pressing part 35 are located on both sides of the slit part 24 of the second opening 22.

  Each fulcrum part 33 is in surface contact with the anchor plate 2. Each inclined portion 34 is inclined from the lower end of the fulcrum portion 33 so as to move downward from the anchor plate 2. Each pressing portion 35 extends downward from the lower end of the inclined portion 34 in parallel with the anchor plate 2. Each pressing portion 35 comes into contact with the back surface of the head 61 when the shaft portion 62 of the stud 6 is positioned in the slit portion 24. The bridge portion 36 connects the lower ends that are the tips of the pressing portions 35.

  In the present embodiment, the bridge portion 36 is inclined in the direction opposite to the inclined portion 34. That is, the bridge portion 36 is inclined so as to approach the anchor plate 2 downward from the lower end of the pressing portion 35 and is in contact with the anchor plate 2 at the lower end.

  Furthermore, in this embodiment, a hook 37 that engages with the back surface of the anchor plate 2 is provided at each of the fulcrum portions 33 of the urging piece 32. When the anchor plate 2 is moved upward in a state where the head 61 of the stud 6 is inserted through the enlarged portion 23 of the second opening 22, the hook 37 is a locking piece 31 that is elastically deformed by the biasing piece 32. At the same time, separation from the anchor plate 2 is prevented. At the same time, when the shaft portion 62 is displaced into the slit portion 24 of the anchor plate 2, the fulcrum portion 33 is maintained between the head 61 of the stud 6 and the anchor plate 2, and the biasing piece 32 is the back surface of the head 61. (See FIG. 4B). After that, the head 61 is brought into contact with each inclined portion 34 of the biasing piece 32 and elastically deforms so that the biasing piece 32 approaches the anchor plate 2, and the shaft portion 62 of the stud 6 is at the end of the slit portion 24. When positioned, a part of each inclined portion 34, each pressing portion 35 and the bridge portion 36 is interposed between the head 61 of the stud 6 and the anchor plate 2 with the biasing piece 32 elastically deformed, The head 61 is urged away from the anchor plate 2 (see FIGS. 4C and 5).

  As described above, in the anchor device 1A of the present embodiment, when the anchor device 1A is fixed to the stud 6, the anchor plate 2 is attached to the flange 63 (the vehicle body) of the stud 6 by the urging force of the urging piece 32 of the stopper 3. Side). Accordingly, the anchor plate 2 is prevented from vibrating with respect to the stud 6 and generating abnormal noise. In addition, since the urging piece 32 is interposed between the head 61 of the stud 6 and the anchor plate 2, it is possible that a vehicle occupant's foot or baggage directly or over the cover may hit the urging piece. It is suppressed by the head 61. That is, the head 61 of the stud 6 serves to protect the biasing piece 32 of the stopper 3. Therefore, the durability of the abnormal noise prevention function of the stopper 3 can be improved.

(Second Embodiment)
6 to 10 show a seat belt anchor device 1B according to a second embodiment of the present invention. The anchor device 1B is fixed to a stud 6 provided on the vehicle body 5 as shown in FIGS. 9C and 10. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and a duplicate description is omitted.

  In the present embodiment, the anchor device 1B includes a stopper 7 having a shape different from that of the first embodiment. The stopper 7 is made of a metal leaf spring and is attached to the anchor plate 2 by a rivet 4. Although the metal which comprises the stopper 7 is not specifically limited, For example, it is steel.

  The stopper 7 overlaps with the anchor plate 2 on the lower side from the middle position of the second opening 22 of the anchor plate 2 and has the same size as that portion. A pair of left and right through holes 25 through which the rivet 4 is inserted are provided on both sides of the upper end of the slit portion 24 of the second opening 22 of the anchor plate 2. On the other hand, a pair of left and right through holes 78 through which the rivet 4 is inserted are also provided on the top of the stopper 7. The stopper 7 is attached to the anchor plate 2 by inserting the rivet 4 into the through hole 25 and the through hole 78 in a state where the through holes 78 coincide with each other and crimping.

  The stopper 7 is bent in a U shape that opens upward in a side view. Specifically, the stopper 7 includes a first plate-like portion 7A that comes into contact with the anchor plate 2, a second plate-like portion 7B that faces the first plate-like portion 7A with a gap, and a first plate-like portion 7A. A folded portion 7C that connects the lower ends of the second plate-like portion 7B is included.

  The first plate-like portion 7A is provided with a tongue-like opening 70 that is a cut from the upper side. The U-shaped contour of the tongue-shaped opening 70 substantially matches the contour of the slit portion 24 of the second opening 22. That is, the width of the tongue-shaped opening 70 is approximately the same as the width of the slit portion 24 of the second opening 22.

  The second plate-like portion 7B is provided with a substantially rectangular central opening 84 at a position corresponding to the tongue-like opening 70. Further, the second plate-like portion 7B is provided with a locking piece 71 that protrudes downward toward the center of the central opening 84. The locking piece 71 is at a position corresponding to the enlarged portion 23 of the second opening 22 of the anchor plate 2 and at a position separated from the surface of the anchor plate 2.

  The lower end, which is the tip of the locking piece 71, is bent toward the anchor plate 2. In the locking piece 71, the anchor plate 2 is moved upward along the extending direction of the slit portion 24 in a state where the head 61 of the stud 6 is inserted through the enlarged portion 23 of the second opening 22 (see FIG. 9A). The head 61 is allowed to pass through while being in contact with the head 61 by elastically deforming away from the anchor plate 2 (see FIG. 9B). Furthermore, the locking piece 71 is disposed so as to prevent the head 61 from returning to the enlarged portion 23 when the shaft portion 62 of the stud 6 is positioned in the slit portion 24 as shown in FIG. 9C.

  When detaching the anchor device 1A from the stud 6, the entire second plate portion 7B is moved so that the locking piece 71 is separated from the anchor plate 2 by operating the upper end of the second plate portion 7B from the state shown in FIG. 9C. Is elastically deformed. Thereby, the head 61 of the stud 6 is allowed to return to the enlarged portion 23. Thus, the anchor device 1B of the present embodiment can be operated from the upper side of the anchor plate 2, that is, the side closer to the occupant when being removed from the stud 6. On the other hand, in the conventional anchor device 110 shown in FIGS. 11 and 12, the locking piece 131 is separated from the anchor plate 120 by operating the lower end of the anchor plate 120, that is, the pressing piece 132 on the side away from the occupant. The stopper 130 needs to be elastically deformed. For this reason, the anchor device 1B of the present embodiment has better operability than the conventional anchor device 110.

  A U-shaped notch 82 larger than the outline of the tongue-like opening 70 is formed in the first plate-like portion 7A. A U-shaped biasing piece 72 surrounding the tongue-shaped opening 70 is formed between the notch 82 and the tongue-shaped opening 70.

  The first plate-like portion 7 </ b> A includes a base portion 81 that is in surface contact with the anchor plate 2 around the biasing piece 72. The folded portion 7C is connected to the base portion 81.

  In the present embodiment, a groove 83 extending from the center of the notch 82 to the lower end of the second plate-like part 7B through the folded part 7C is provided, and the folded part 7C is divided into right and left by the groove 83. . However, the groove 83 may be omitted and the folded portion 7C may be one continuous.

  When the shaft portion 62 of the stud 6 is positioned at the end of the slit portion 24, the biasing piece 72 is interposed between the head portion 61 and the anchor plate 2 and attaches the head portion 61 in a direction away from the anchor plate 2. By energizing, relative vibration between the stud 6 and the anchor plate 2 is suppressed.

  More specifically, the biasing piece 72 includes a pair of left and right fulcrum portions 73, a pair of left and right inclined portions 74, a pair of left and right pressing portions 75, and a bridge portion 76 in order from the upper side. The pair of fulcrum portions 73 are separated from each other with the tongue-shaped opening 70 interposed therebetween. The same applies to the pair of inclined portions 74 and the pair of pressing portions 75. That is, the fulcrum part 73, the inclined part 74, and the pressing part 75 are located on both sides of the slit part 24 of the second opening 22.

  Each fulcrum part 73 is in surface contact with the anchor plate 2. Each inclined portion 74 is inclined so as to move away from the anchor plate 2 downward from the lower end of the fulcrum portion 73. Each pressing portion 75 extends downward from the lower end of the inclined portion 74 in parallel with the anchor plate 2. Each pressing portion 75 contacts the back surface of the head 61 when the shaft portion 62 of the stud 6 is positioned in the slit portion 24. The bridge portion 76 connects the lower ends that are the tips of the pressing portion 75.

  When the shaft portion 62 is displaced into the slit portion 24 of the anchor plate 2, the head portion 61 comes into contact with each inclined portion 74 of the biasing piece 72 (see FIG. 9B), and the biasing piece 72 approaches the anchor plate 2. When the shaft portion 62 of the stud 6 is positioned at the end of the slit portion 24, each of the inclined portions 74, the pressing portions 75, and the bridge portion 76 is in a state where the biasing piece 72 is elastically deformed. The portion is interposed between the head 61 of the stud 6 and the anchor plate 2 and biases the head 61 in a direction away from the anchor plate 2 (see FIGS. 9C and 10).

  In the present embodiment, the bridge portion 76 is continuous with the pressing portion 75 and is parallel to the anchor plate 2. However, as in the first embodiment, the bridge portion 76 is inclined from the lower end of the pressing portion 75 so as to approach the anchor plate 2 downward, and may be in contact with the anchor plate 2 at the lower end. .

  As described above, in the anchor device 1B of the present embodiment, when the anchor device 1B is fixed to the stud 6, the anchor plate 2 is fixed to the flange 63 (the vehicle body) of the stud 6 by the urging force of the urging piece 72 of the stopper 7. Side). Accordingly, the anchor plate 2 is prevented from vibrating with respect to the stud 6 and generating abnormal noise. In addition, since the urging piece 72 is interposed between the head 61 of the stud 6 and the anchor plate 2, it is possible that a vehicle occupant's foot, luggage, or the like hits the urging piece directly or over the cover. It is suppressed by the head 61. That is, the head 61 of the stud 6 serves to protect the biasing piece 72 of the stopper 3. Therefore, the durability of the abnormal noise prevention function of the stopper 7 can be improved.

(Other embodiments)
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

  For example, the urging piece (32 or 72) is not necessarily U-shaped, and one inclined portion (34 or 74) and one piece disposed only on one side of the slit portion 24 of the second opening 22 are provided. It may be linear with a pressing part (35 or 75). However, if the urging piece (32 or 72) is U-shaped as in the above embodiment, there are pressing portions (35 or 75) on both sides of the slit portion 24. Even if 2 inclines, the biasing piece can stably bias the head 61 of the stud 6. Moreover, since the load applied to the urging piece (32 or 72) that urges the head 61 of the stud 6 is dispersed, it is possible to suppress a decrease in the elasticity of the urging piece.

  Further, the urging piece (32 or 72) does not necessarily need to have the pressing portion (35 or 75) parallel to the anchor plate 2, and may be inclined as a whole. However, if the urging piece (32 or 72) has a pressing part (35 or 75) parallel to the anchor plate 2 as in the above-described embodiment, the urging piece has a large area and the head 61 of the stud 6 can be Since it contacts, the noise prevention effect can be heightened.

DESCRIPTION OF SYMBOLS 1A, 1B Seat belt anchor apparatus 2 Anchor plate 21 1st opening 22 2nd opening 23 Enlarged part 24 Slit part 3 Stopper 31 Stopping piece 32 Energizing piece 34 Inclined part 35 Pressing part 36 Bridge part 5 Car body 6 Stud 61 Head Part 62 shaft part 7 stopper 71 locking piece 72 urging piece 74 inclined part 75 pressing part 76 bridge part 7A first plate-like part 7B second plate-like part 7C folding part 81 base part

Claims (5)

An anchor device for a seat belt that is fixed to a stud provided on a vehicle body and having a shaft portion and a head having a larger diameter than the shaft portion,
A first opening to which the seat belt webbing is fixed is formed, and an enlarged portion through which the head of the stud is inserted, and an axial portion of the stud that extends from the enlarged portion in a direction opposite to the first opening pass. An anchor plate formed with a keyhole-shaped second opening having a slit portion which is possible and cannot pass through the head;
A stopper made of a metal leaf spring attached to the anchor plate, the anchor plate extending in the slit direction in a state where the head portion of the stud is inserted into the enlarged portion of the second opening A locking piece that allows passage of the head when moved along, and prevents the head from returning to the enlarged portion when the shaft portion of the stud is positioned in the slit portion, and A stopper including a biasing piece that is interposed between the head and the anchor plate and biases the head in a direction away from the anchor plate when a shaft portion is positioned in the slit portion;
An anchor device for a seat belt, comprising:   The biasing piece includes an inclined portion that inclines away from the anchor plate in a first direction that is a direction from the enlarged portion toward the slit portion, and the first parallel to the anchor plate from the inclined portion. The seatbelt anchor device according to claim 1, further comprising a pressing portion that extends in a direction and abuts against the head when the shaft portion of the stud is positioned in the slit portion.   The sheet according to claim 2, wherein the inclined portion and the pressing portion are provided in pairs so as to be positioned on both sides of the slit portion, and the ends of the pair of pressing portions are connected by a bridge portion. Belt anchor device. The stopper includes a first plate-shaped portion that comes into contact with the anchor plate, a second plate-shaped portion that faces the first plate-shaped portion with a gap therebetween, and a first plate-shaped portion in a direction from the enlarged portion toward the slit portion. Including a folded portion that connects the first plate-shaped portion and the second plate-shaped portion;
The sheet according to any one of claims 1 to 3, wherein the locking piece is provided on the second plate-like portion, and the biasing piece is provided on the first plate-like portion. Belt anchor device. 5. The seat belt according to claim 4, wherein the first plate-like portion includes a base portion that is in surface contact with the anchor plate around the biasing piece, and the folded portion is connected to the base portion. Anchor device.

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