JP2012121497A - Shoulder anchor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shoulder anchor device capable of reducing components for use in releasing a movement restraint of a slider.SOLUTION: A part that performs a pressing operation for drawing a lock hole abutment section 114 from a lock hole 22 and a part that is engaged with a stopper 112 in conjunction with a pressing operation of a coil section 134 to make the lock hole abutment section 114 be drawn from the lock hole 22 or presses the stopper 112 by biasing force of a stopper operation spring 132 to push the lock hole abutment section 114 into the lock hole 22 side are formed as portions of the stopper operation spring 132 for biasing the stopper 112. Accordingly, such a structure is constituted of one component, and the costs are efficiently reduced.

Description

  The present invention relates to a shoulder anchor device capable of changing a support position of a slip joint of a seat belt device.

  In the shoulder anchor height adjusting device disclosed in Patent Document 1 below, when the force point portion of the lever piece is pressed through the button, the lever piece is centered on the connecting portion between the force point portion and the action point portion of the lever piece. Rotating, the action point presses the flange of the pin and moves the pin against the urging force of the compression coil spring. The slider can be slid by moving the pin in this way and removing the pin from the lock hole of the guide rail.

Japanese Patent Laid-Open No. 2001-39267

  As described above, in the configuration disclosed in Patent Document 1, as a configuration for removing the pin from the guide hole, a button to which a pressing force is applied, and the pin is moved by receiving the pressing force applied to the button. The number of parts is increased because the insulator pieces are used.

  In view of the above fact, an object of the present invention is to obtain a shoulder anchor device capable of reducing the number of parts used for releasing the slider movement restriction.

  In the shoulder anchor device according to the first aspect of the present invention, a slip joint that supports webbing, a slider that supports the slip joint, and a plurality of restriction holes that open toward the slider side are predetermined along the longitudinal direction. A guide member that is formed at intervals and is slidably mounted along the longitudinal direction, and is provided on the slider so as to be movable toward and away from the guide member, and faces the restriction hole. In this state, it moves into the restriction hole by moving in the direction approaching the guide member, and in the state of entering the restriction hole, movement in the sliding direction is restricted by the inner peripheral portion of the restriction hole. A stopper for restricting the movement of the slider along the longitudinal direction of the guide member, and one end side of the stopper And the other end engages with the stopper, urges the stopper toward the inside of the restriction hole by bringing the stopper close to the guide member, and the one end Urging the other end side to move the stopper away from the guide member by pressing the intermediate part between the side and the other end side and displacing the intermediate part against the urging force Means.

  According to the shoulder anchor device of the present invention as set forth in claim 1, the urging means whose one end is locked to the slider is engaged with the stopper provided on the slider at the other end, and the stopper is on the guide member side. Is energized. For this reason, if the stopper is opposed to any one of the plurality of restriction holes formed in the guide member, at least a part of the stopper enters the restriction hole by the urging force of the urging means. Thus, in a state where the stopper has entered the restriction hole formed in the guide member, the inner peripheral portion of the restriction hole interferes with the stopper, restricting the movement of the stopper along the longitudinal direction of the guide member, The movement of the slider along the longitudinal direction of the guide member is restricted. Thereby, the slip joint supported by the slider is supported at a position corresponding to the restriction hole in which the stopper has entered.

  In this state, if the intermediate part between the one end side and the other end side of the urging means is pressed and the intermediate part is displaced in a predetermined direction against the urging force of the urging means, the urging means The other end of the stopper is moved in a direction to separate the stopper from the guide member. Thus, when the stopper comes out of the restriction hole, the interference of the inner peripheral portion of the restriction hole with respect to the stopper is eliminated, and the slider can slide in the longitudinal direction of the guide member.

  In this state, while the slider is guided to the guide member, the slider is moved to a desired position in the longitudinal direction of the guide member (for example, the vertical direction of the vehicle to which the shoulder anchor device is attached) so that the stopper and the restriction hole are opposed to each other. In this state, when the pressing against the intermediate portion of the urging means is eliminated, the other end side of the urging means moves the stopper to the inside of the restriction hole by the urging force of the urging means. Thus, in the shoulder anchor device, the support position of the slip joint can be changed in the longitudinal direction of the guide member.

  Here, in the shoulder anchor device according to the present invention, the portion to which the pressing force is applied in order to let the stopper come out of the restriction hole is an intermediate portion of the urging means for urging the stopper toward the restriction hole side. The other end side of the urging means is a structure for moving the stopper in order to allow the stopper to move out of the restriction hole or to enter the stopper into the restriction hole. Thus, because the configuration for biasing the stopper toward the restriction hole side has a configuration for applying a pressing force to cause the stopper to escape from the restriction hole, and a configuration for moving the stopper, These configurations can be configured with a single component, and the cost can be reduced.

  A shoulder anchor device according to a second aspect of the present invention is the shoulder anchor device according to the first aspect of the present invention, wherein the biasing means is formed by bending a rod-shaped spring material and its longitudinal direction. The intermediate part is formed in a coil shape, and the other end side is configured to move the stopper by pressing and displacing the coiled part.

  According to the shoulder anchor device of the present invention as set forth in claim 2, the biasing means is formed by bending a rod-shaped spring material. Further, the intermediate portion of the urging means is formed by forming this spring material into a coil shape, and is by pressing and moving the portion formed in this coil shape, and in the middle in the longitudinal direction. The part is formed in a coil shape, and the other end side of the urging means moves the stopper in a direction in which the stopper comes out of the restriction hole by pressing and displacing the coiled portion.

  As described above, in the shoulder anchor device according to the present invention, the urging means can be formed only by appropriately bending the rod-shaped spring material including the coil-shaped molding, so that the cost can be further reduced.

  A shoulder anchor device according to a third aspect of the present invention is the shoulder anchor device according to the first or second aspect of the present invention, wherein the stopper is linearly movable in a direction in which the stopper comes in contact with or separates from the guide member. The other end side of the biasing means is configured to press and move the stopper to the side opposite to the guide member by pressing and displacing the intermediate portion of the biasing means.

  According to the shoulder anchor device according to the third aspect of the present invention, the stopper is provided so as to be linearly movable in a direction in which the stopper comes in contact with and separates from the guide member, and the intermediate portion of the urging means is pressed and displaced. Then, the other end side of the urging means presses the stopper to the side opposite to the guide member, and thereby the stopper moves in the direction of coming out of the restriction hole.

  Further, when the pressing against the intermediate portion of the urging means is released while the stopper is pulled out from the restriction hole, the other end side of the urging means presses the stopper toward the guide member side by the urging force of the urging means. Thus, the stopper moved linearly toward the guide member enters the restriction hole.

  A shoulder anchor device according to a fourth aspect of the present invention is the shoulder anchor device according to the first or second aspect of the present invention, wherein the stopper rotates relative to the slider in a direction in which the stopper comes in contact with or separates from the guide member. The other end side of the urging means is opposite to the guide member by the urging force of the urging means on the opposite side of the stopper into the restriction hole through the rotation center. It is configured to press to the side.

  According to the shoulder anchor device of the present invention described in claim 4, the stopper is provided so as to be rotatable with respect to the slider in a direction in which the stopper comes in contact with and separates from the guide member, and presses the intermediate portion of the biasing means. When displaced, the other end side of the urging means presses the side opposite to the portion that enters the restriction hole through the rotation center of the stopper toward the guide member side, whereby the stopper comes out of the restriction hole.

  In addition, when the pressing against the intermediate portion of the urging means is released while the stopper is pulled out from the restriction hole, the other end side of the urging means presses the stopper to the side opposite to the guide member by the urging force of the urging means. And rotate. As a result, the opposite side of the biasing means to the engaging portion side is rotated to the guide member side via the rotation center of the stopper, whereby the stopper enters the restriction hole.

  As described above, in the shoulder anchor device according to the present invention, it is possible to reduce the parts used for releasing the slider movement restriction.

It is a disassembled perspective view of the shoulder anchor apparatus which concerns on 1st Embodiment. It is a perspective view of the assembly state of the shoulder anchor apparatus which concerns on 1st Embodiment. It is a front view of the shoulder anchor apparatus from the vehicle width direction inner side which shows the state which assembled | attached the shoulder anchor apparatus which concerns on 1st Embodiment to a vehicle. It is side surface sectional drawing of the shoulder anchor apparatus which concerns on 1st Embodiment which shows the state which the stopper entered into the control hole. It is side surface sectional drawing of the shoulder anchor apparatus which concerns on 1st Embodiment which shows the state which the stopper pulled out from the control hole. It is a disassembled perspective view of the shoulder anchor apparatus which concerns on 2nd Embodiment. It is a perspective view of the assembly state of the shoulder anchor apparatus which concerns on 2nd Embodiment. It is side surface sectional drawing of the shoulder anchor apparatus which concerns on 2nd Embodiment which shows the state which the stopper entered into the control hole. It is side surface sectional drawing of the shoulder anchor apparatus which concerns on 2nd Embodiment which shows the state which the stopper pulled out from the control hole.

  Next, an embodiment of the present invention will be described with reference to FIGS. In the following description of each embodiment, the same reference numerals are given to the same parts as those in the previous embodiment, and detailed descriptions thereof are given. Omitted.

<Configuration of First Embodiment>
FIG. 1 is an exploded perspective view showing a configuration of a shoulder anchor device 10 according to the first embodiment, and FIG. 2 is a perspective view showing a state where the shoulder anchor device 10 is assembled. As shown in these drawings, the shoulder anchor device 10 mainly includes a guide rail 12 as a guide member, a slider 42, a stopper 112, and a stopper operating spring 132 as an urging means.

(Configuration of guide rail 12)
First, the configuration of the guide rail 12 will be described. The guide rail 12 is generally formed by press-molding a relatively hard metal plate material such as iron. The guide rail 12 includes a base portion 14 formed in a narrow plate shape. As shown in FIG. 3, the guide rail 12 is disposed on the vehicle interior side of the center pillar 18 so that the longitudinal direction of the base portion 14 is along the direction inclined in the front-rear direction with respect to the vertical direction of the vehicle 16. As shown in FIG. 1 and FIG. 2, circular holes 20 are formed on both ends of the base portion 14 in the longitudinal direction so as to penetrate in the thickness direction of the base portion 14. A bolt (not shown) passes through the circular hole 20, and the guide rail 12 is fastened and fixed to the center pillar 18 (see FIG. 3) by this bolt.

  Further, a plurality of lock holes 22, each serving as a restriction hole, are formed at predetermined intervals in the intermediate portion in the longitudinal direction of the base portion 14. These lock holes 22 are rectangular holes penetrating in the thickness direction of the base portion 14. A slant wall 24 extends from the end of each lock hole 22 on the upper side of the vehicle so as to be inclined outward in the vehicle width direction with respect to the downward direction of the vehicle. Further, vertical walls 26 extend from both ends in the width direction of the base portion 14 toward the interior side in the vehicle width direction, and tips of these vertical walls 26 (end portions on the opposite side to the base portion 14 of the vertical walls 26). ), A guide wall 28 extends outward in the width direction of the base portion 14.

  In the present embodiment, the base portion 14 of the guide rail 12 has been described as a thin flat plate. However, the rail body 14 is curved with a predetermined distance from one surface in the thickness direction as a center to obtain a thickness. It is good also as a structure set to the intensity | strength which can be deform | transformed with the external force more than the predetermined value from one direction.

(Configuration of slider 42)
Next, the configuration of the slider 42 will be described. The slider main body 43 includes a slider main body 43 formed by press-molding a relatively hard metal plate material such as iron as a whole. The slider main body 43 includes a rectangular flat plate-shaped base portion 44 whose thickness direction is along the vehicle width direction. Curved portions 46 are formed at both ends in the width direction of the base portion 44. The curved portion 46 is curved in a U shape outward in the vehicle width direction around an axis whose axial direction is the longitudinal direction of the base portion 44. A facing portion 48 is formed on the opposite side of the curved portion 46 from the base portion 44. The facing portion 48 has a thickness direction along the vehicle width direction, and faces the base portion 44 with an interval sufficiently larger than the plate thickness of the guide wall 28 in the guide rail 12. In a state where the slider main body 43 is attached to the guide rail 12, the facing portion 48 faces the guide wall 28 on the side opposite to the base portion 44 of the guide wall 28.

  Further, a support shaft 50 whose axial direction is along the vehicle width direction is formed on the lower end side of the vehicle interior side surface of the base portion 44. As shown in FIG. 3, a slip joint 52 is swingably supported around the support shaft 50 on the support shaft 50. As shown in FIGS. 1 and 2, a webbing take-up device constituting a seat belt device is provided below the slip joint 52, and the webbing 54 drawn upward from the spool of the webbing take-up device slips. It passes through a slit hole 56 formed in the joint 52 and is folded downward.

  Further, a through hole 62 is formed in the center of the base 44 in the width direction above the support shaft 50. The through hole 62 is a slit-like hole whose longitudinal direction runs along the width direction of the base 44 and penetrates the base 44. A stopper 112 which will be described later is disposed through the through hole 62. A stopper support 64 is formed below the through hole 62. The stopper support portion 64 is formed by curving the base portion 44 so that the lower portion of the through hole 62 in the base portion 44 protrudes inward in the vehicle width direction, and the end surface 66 of the stopper support portion 64 is At least a part of the base 44 is located on the inner side (vehicle interior side) than the surface on the vehicle interior side.

  On the other hand, a curved portion 68 is formed on the upper side of the base portion 44. The bending portion 68 is formed by bending the base portion 44 so that the lower portion of the through hole 62 in the base portion 44 protrudes inwardly in the vehicle width direction, and the end surface 70 of the bending portion 68 is at least one of the end surfaces 70 thereof. Is located on the outer side (outside of the vehicle compartment) of the base portion 44 outside the vehicle compartment, and preferably in the state where the slider main body 43 is attached to the guide rail 12 in the stopper support portion 64 most inside the vehicle compartment. The end surface 70 at the portion of the curved portion 68 that protrudes most outward in the vehicle width direction is positioned approximately at the center between the stopper support portion 64 at the portion protruding to the lower side and the lower surface of the inner peripheral portion of the lock hole 22. Thus, the shapes of the end face 70 and the stopper support portion 64 are set.

  In addition, slit holes 72 are formed on both sides in the width direction of the base portion 44 with the through hole 62 interposed therebetween. These slit holes 72 penetrate in the thickness direction of the base portion 44 and open at the upper end portion of the base portion 44, and a vertical wall portion 92 of a shoe 82 described later is inserted into the slit hole 72 from above. .

  On the other hand, the slider 42 includes a shoe 82 that constitutes the slider 42 together with the slider body 43. The shoe 82 is entirely formed of a hard synthetic resin material. The shoe 82 includes a rectangular flat plate-like base portion 84 whose thickness direction is along the vehicle width direction. The base 84 is located outside the base 44 in the vehicle width direction with the shoe 82 mounted on the slider body 43. Curved portions 86 are formed at both ends in the width direction of the base portion 84. The curved portions 86 are curved in a U-shape around the axis with the longitudinal direction of the base portion 84 as the axial direction, and these curved portions 86 are located inside the curved portion 46 in the slider main body 43.

  A facing portion 88 is formed on the opposite side of the curved portion 86 from the base portion 84. The facing portion 88 has a thickness direction along the vehicle width direction, and is spaced from the base portion 84 at a distance substantially the same as the thickness of the guide wall 28 in the guide rail 12 or slightly larger than the thickness of the guide wall 28. Opposite. In a state where the slider main body 43 is attached to the guide rail 12, the guide wall 28 is sandwiched between the base portion 84 and the facing portion 88, so that the slider main body 43 is positioned relative to the guide rail 12 in the thickness direction of the guide wall 28 (that is, , Relative displacement in the vehicle width direction) can be regulated.

  A through hole 90 is formed in the base portion 84. The through hole 90 is a hole penetrating in the thickness direction of the base portion 84. The inner peripheral lower portion of the through hole 90 is formed in a flat shape, and is positioned slightly below the end surface 66 of the stopper support portion 64 when the shoe 82 is mounted on the slider body 43. A sliding contact portion 91 extends from the base portion 84 toward the outside in the vehicle width direction (on the guide rail 12 side) from the vicinity of the lower inner periphery of the through hole 90. The upper surface of the sliding contact portion 91 is flush with the inner peripheral lower portion of the through hole 90, and the lower end portion of the lock hole contacting portion 114 of the stopper 112 described later is in sliding contact. On the other hand, the inner periphery upper part of the through-hole 90 is made into the concave shape curved with the predetermined curvature so that it may open toward the downward direction, and the curved part 68 can penetrate the through-hole 90. FIG.

  Further, vertical wall portions 92 are formed on both sides of the base portion 84 across the through hole 90 in the width direction. These vertical wall portions 92 are formed in a plate shape whose thickness direction is along the width direction of the base portion 84, and the interval between one vertical wall portion 92 and the other vertical wall portion 92 is the one slit hole described above. When the shoe 82 is attached to the slider body 43, these vertical wall portions 92 are inserted into the slit hole 72 from above.

  A spring mounting portion 94 is formed above the vertical wall portions 92. The spring mounting portion 94 includes an upper wall portion 96. The upper wall portion 96 is formed in a plate shape whose longitudinal direction is along the width direction of the base portion 84 and whose width direction is along the thickness direction of the base portion 84, and one end in the width direction (an end portion on the outer side in the vehicle width direction) is formed. It is connected to the upper end of the base 84 in the longitudinal direction. Spring attachment walls 98 are formed at both longitudinal ends of the upper wall portion 96.

  The spring mounting wall 98 is formed in a plate shape whose longitudinal direction is along the thickness direction of the base portion 84 and whose width direction is along the longitudinal direction of the base portion 84, and the upper end portion in the width direction of each spring mounting wall 98 is the spring mounting portion. The lower end of the spring mounting wall 98 in the width direction is connected to the upper end of the corresponding vertical wall 92. Further, one end of each spring mounting wall 98 in the longitudinal direction (end on the outer side in the vehicle width direction) is connected to the base portion 84. These spring mounting walls 98 are formed with recesses 100.

  These recesses 100 are opened outward in the width direction of the base 84, and are also opened at the inner end of the spring mounting wall 98 in the vehicle width direction. A spring locking hole 102 is formed at the bottom of these recesses 100. These spring locking holes 102 are formed so as to penetrate the bottom portion of the spring mounting wall 98 in the thickness direction, and the other spring locking hole 102 is coaxial with one spring locking hole 102. Thus, the formation position of the spring locking hole 102 is set.

(Configuration of stopper 112)
Next, the configuration of the stopper 112 will be described. The stopper 112 is formed in a flat plate shape in which the longitudinal direction is along the thickness direction of the base portion 84 and the width direction is along the width direction of the base portion 84 by press-molding a relatively hard metal plate material such as iron. A lock hole abutting portion 114 is formed on the front end side in the longitudinal direction of the stopper 112 (the end portion on the outer side in the vehicle width direction). The lock hole abutting portion 114 has a top surface inclined toward the distal end side of the lock hole abutting portion 114 on the tip side with respect to the intermediate portion in the protruding direction from the stopper 112, and is locked in the locked state in the shoulder anchor device 10. The hole contact portion 114 enters the inside of the lock hole 22.

  Further, a sliding contact protrusion 116 is formed on the lower surface in the thickness direction of the stopper 112 on the tip end side of the stopper 112. The sliding contact projection 116 contacts the upper surface of the sliding contact portion 91 in a state where the thickness direction lower surface of the stopper 112 is in contact with the end surface 66 of the stopper support portion 64, and the lock hole 22 into which the lock hole contact portion 114 enters. It faces the base portion 14 on the lower side.

  On the other hand, a pair of spring locking portions 118 are formed on the base end side in the longitudinal direction of the stopper 112. The spring latching portion 118 penetrates in the thickness direction of the stopper 112 and is a notch opened at the end in the width direction of the stopper 112. For this reason, at the portion where the spring latching portion 118 is formed, the stopper 112 is formed. Are narrower than other portions of the stopper 112.

  Although the stopper 112 is formed in a flat plate shape in the present embodiment, the overall shape of the stopper 112 is not limited to a plate shape, and the longitudinal direction is along the thickness direction of the base portion 84. Alternatively, the cross-sectional shape cut in a block shape or a longitudinal direction along the thickness direction of the base 84 and orthogonal to the longitudinal direction may be a circle, an ellipse, or a substantially round bar shape of an oval shape. .

(Configuration of stopper operating spring 132)
Next, the configuration of the stopper operation spring 132 will be described. The stopper operating spring 132 is formed by molding a wire-like member having elasticity as a whole. The stopper operating spring 132 includes a pair of coil portions 134. These coil portions 134 are formed in a coil shape, and the axial direction is along the width direction of the base portion 84 when the shape is regarded as a cylindrical shape. These coil portions 134 are formed so as to be symmetrically opposed with respect to the width direction central portion of the base portion 44 and the base portion 84. Further, the base ends of both coil portions 134 will be described as the end portions of the coil portions 134 on the outer side in the width direction of the base portion 84, and the tip ends of both coil portions 134 will be described as the end portions on the inner side in the width direction of the base portion 84. The direction from the proximal end to the distal end is reversed between one coil portion 134 and the other coil portion 134).

  A shoe side locking portion 136 is formed continuously from the base end portion of the coil portion 134. The shoe side locking portion 136 extends in a rod shape from the base end portion of the coil portion 134 to the outside in the vehicle width direction, and the tip thereof (the end portion on the outer side of the shoe side locking portion 136 in the vehicle width direction, Further, an end portion of the shoe side locking portion 136 opposite to the coil portion 134 is bent in a hook shape inward in the width direction of the base portion 84. The tip of the shoe side locking portion 136 bent in a hook shape is inserted into a spring locking hole 102 formed in the bottom of the recess 100.

  On the other hand, a stopper side locking portion 138 is formed between the two coil portions 134. The stopper side locking portion 138 includes a connecting portion 140 whose longitudinal direction is along the width direction of the base portion 84. From both ends in the longitudinal direction of the connecting portion 140, rod-like portions 142 extending in a direction in which the longitudinal direction is inclined inward in the vehicle width direction from the connecting portion with the connecting portion 140 to the vehicle upper side. One rod-like portion 142 is connected to the tip of one coil portion 134 through the inside of one spring locking portion 118 formed on the stopper 112, and the other rod-like portion 142 is connected to the other end formed on the stopper 112. It passes through the inside of the spring locking portion 118 and is connected to the tip of the other coil portion 134. In the stopper operating spring 132, the connecting portion 140 is in pressure contact with the base portion 44 with the tip of the shoe side locking portion 136 inserted into the spring locking hole 102.

<Operation and Effect of First Embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the shoulder anchor device 10, as shown in FIG. 4, particularly in a state in which no external force is applied to the coil portion 134, the connecting portion 140 side is more than the end portion on the coil portion 134 side of the rod-like portion 142. The inside of 118 is passed. The rod-shaped portion 142 that has passed through the spring locking portion 118 interferes with the upper edge and the lower edge of the spring locking portion 118, so that the stopper 112 slides along the vehicle width direction. It is regulated.

  In this state, the lock hole contact portion 114 of the stopper 112 can enter the lock hole 22 formed in the guide rail 12, and the lock hole contact portion 114 that enters the lock hole 22 is the inner peripheral portion of the lock hole 22. The stopper 112 is restricted from moving downward by contacting the lower part of the stopper 112. When the downward movement of the stopper 112 is restricted in this way, the end surface 70 of the curved portion 68 is supported on the upper surface in the thickness direction of the stopper 112, thereby restricting the movement of the slider 42.

  Next, in this state, when the coil part 134 is pressed downward against the urging force of the stopper operating spring 132 to displace the coil part 134 downward, the connecting part 140 of the stopper side locking part 138 is moved below the base part 44. To slide. Thereby, the passage position of the spring locking part 118 in the rod-like part 142 moves to the coil part 134 side.

  Here, since the rod-like portion 142 is inclined so as to be gradually displaced inward in the vehicle width direction toward the coil portion 134 side, the passing position of the spring locking portion 118 in the rod-like portion 142 is as the coil portion 134 is lowered. Gradually away from the base portion 44, the rod-like portion 142 pulls the inner peripheral edge of the spring locking portion 118 in the stopper 112 inward in the vehicle width direction. As a result, when the stopper 112 moves inward in the vehicle width direction, the lock hole contact portion 114 comes out of the lock hole 22 as shown in FIG. As described above, when the lock hole contact portion 114 comes out of the lock hole 22, the lowering restriction of the stopper 112 is canceled, and the slider 42 can be moved up and down while guiding the slider 42 to the guide wall 28 of the guide rail 12.

  In the state where the position of the slip joint 52 supported by the support shaft 50 is moved to a desired height, the downward pressing force applied to the coil part 134 is eliminated. In this state, if the stopper 112 is opposed to the lock hole 22, the rod-like portion 142 presses the edge of the spring engaging portion 118 outwardly in the vehicle width direction by the biasing force of the stopper operating spring 132, and FIG. As shown, the lock hole contact portion 114 of the stopper 112 enters the lock hole 22.

  If the stopper 112 is not opposed to the lock hole 22 in the state where the downward pressing force is applied to the coil part 134, the rod-shaped part 142 of the lock hole contact part 114 is pressed by the biasing force of the stopper operating spring 132 described above. The tip is brought into pressure contact with the base 14 of the guide rail 12. In this state, when the slider 42 is raised or lowered and the stopper 112 is opposed to the lock hole 22 closest to the upper side or the lower side with respect to the desired height (position), the stopper is pressed by the biasing force of the stopper operating spring 132. The lock hole contact portion 114 of 112 enters the lock hole 22 (see FIG. 4).

  In this way, the coil portion 134 of the stopper operating spring 132 is pressed downward so that the lock hole abutting portion 114 of the stopper 112 is pulled out of the lock hole 22, and the slider 42 is guided to the guide rail 12 and appropriately moved up and down. The height of the slip joint 52 can be adjusted by releasing the pressure on the coil portion 134 at or near the desired height and causing the lock hole contact portion 114 of the stopper 112 to enter the lock hole 22. it can.

  Here, in the shoulder anchor device 10, the portion that is pressed to cause the lock hole contact portion 114 to come out of the lock hole 22, that is, the coil portion 134 urges the stopper 112 to the inside of the lock hole 22. This is a part of the stopper operating spring 132. In conjunction with the pressing operation of the coil portion 134, the lock 112 is engaged with the stopper 112 to cause the lock hole contact portion 114 to come out of the lock hole 22, or the stopper 112 is pressed and locked by the biasing force of the stopper operation spring 132. A portion where the hole contact portion 114 is inserted into the lock hole 22 side, that is, a rod-shaped portion 142 is also a part of the stopper operating spring 132.

  For this reason, the shoulder anchor device 10 has a configuration for urging the stopper 112 toward the lock hole 22, a configuration for pressing the lock hole abutment portion 114 from the lock hole 22, and a lock hole contact. The structure for allowing the contact portion 114 to come out of the lock hole 22 or for pressing the stopper 112 with the urging force of the stopper operating spring 132 to insert the lock hole contact portion 114 into the lock hole 22 side is constituted by one part. And cost can be effectively reduced.

  Moreover, in spite of the fact that these various parts are made up of a single component, the coil spring is structurally bent as appropriate to form the shoe side locking portion 136 and the stopper side locking portion 138. In this sense, the cost can be effectively reduced.

  On the other hand, in a state where the lock hole abutting portion 114 of the stopper 112 enters the lock hole 22 and the lowering of the slider 42 is restricted, the end surface 70 of the curved portion 68 covers the upper surface in the thickness direction of the stopper 112 due to the weight of the slider 42 or the like. Press down. The position at which the end surface 70 of the curved portion 68 presses the stopper 112 is spaced inward in the vehicle width direction from the contact position between the lower surface in the thickness direction of the stopper 112 and the lower inner periphery of the lock hole 22. The contact position between the end surface 70 of the curved portion 68 and the stopper 112 tends to rotate downward about the contact position between the lower surface in the thickness direction of the stopper 112 and the lower inner periphery of the lock hole 22.

  However, in the shoulder anchor device 10, the stopper is located on the inner side in the vehicle width direction than the contact position between the end surface 70 of the curved portion 68 and the stopper 112 (that is, through the contact position between the end surface 70 of the curved portion 68 and the stopper 112. The end surface 66 of the stopper support portion 64 is in contact with the lower surface of the stopper 112 from below at the opposite side of the contact position between the lower surface in the thickness direction of 112 and the lower inner peripheral portion of the lock hole 22.

  Therefore, as described above, when the stopper 112 tries to rotate, the end surface 66 of the stopper support portion 64 interferes with the lower surface of the stopper 112 and the stopper 112 restricts the rotation. Thereby, the inclination of the stopper 112 due to the weight of the slider 42 acting on the stopper 112 is suppressed, and the lock hole contact portion 114 of the stopper 112 is inadvertently pulled out of the lock hole 22 due to the inclination of the stopper 112. Can be effectively prevented.

<Configuration of Second Embodiment>
Next, a second embodiment will be described with reference to FIGS.

  FIG. 6 is an exploded perspective view showing a configuration of a shoulder anchor device 160 according to the second embodiment, and FIG. 7 is a perspective view showing a state where the shoulder anchor device 160 is assembled. As shown in these drawings, the shoulder anchor device 160 mainly includes a guide rail 12, a slider 162, a stopper 202, and a stopper operating spring 222 as an urging means.

(Configuration of slider 162)
In the first embodiment, the slider 42 is composed of the slider body 43 and the shoe 82, whereas the slider 162 is composed of the slider body 164 and the shoe 182. The slider body 164 has a through hole 166 instead of the through hole 62. The through-hole 166 is a rectangular hole whose longitudinal direction is along the longitudinal direction of the base 44 (vehicle up-down direction) and whose width direction is along the width direction of the base 44 (vehicle front-rear direction), and penetrates in the thickness direction of the base 44. Yes. The slider main body 164 is different from the slider main body 43 in the first embodiment in that the stopper support portion 64 and the curved portion 68 are not formed.

  Further, a notch 168 is formed in the slider body 164 in place of the slit hole 72. The notch 168 penetrates in the thickness direction of the base 44 and is a rectangular notch opened at the upper end of the base 44.

  On the other hand, a through hole 184 is formed in the shoe 182 instead of the through hole 90. The through hole 184 is a rectangular hole whose longitudinal direction is along the longitudinal direction (vehicle up-down direction) of the base 84 and whose width direction is along the width direction (vehicle longitudinal direction) of the base 84 and penetrates in the thickness direction of the base 84. . Furthermore, a cutout 186 is formed in the base portion 84. The notch 186 is formed above the through hole 184 and opens at the upper end of the inner peripheral portion of the through hole 184. A peripheral wall 188 extends from the inner surface of the base 84 in the vehicle width direction toward the inner side in the vehicle width direction.

  The peripheral wall 188 is formed in a frame shape along the periphery of the through hole 184, but is cut at a portion corresponding to the notch 186, and is not continuous in the circumferential direction. The outer peripheral shape of the peripheral wall 188 is substantially equal to the inner peripheral shape of the through hole 166, and when the shoe 182 is attached to the slider main body 164, the peripheral wall 188 penetrates the through hole 166 from the vehicle width direction outer side and the base of the slider main body 164 Projects inward in the vehicle width direction from 44.

  A pair of spring locking walls 192 is formed in the vicinity of the upper end portion of the base portion 84 of the shoe 182. These spring locking walls 192 are plate-like in the thickness direction along the width direction of the base portion 84, and extend inward in the vehicle width direction from the inner surface of the base portion 84 in the vehicle width direction. . These spring locking walls 192 face each other in the width direction of the base portion 84. In addition, spring locking holes 194 are formed in these spring locking walls 192. These spring locking holes 194 penetrate the spring locking wall 192 in the thickness direction, and the other spring locking wall with respect to the spring locking hole 194 formed in one spring locking wall 192. Spring locking holes 194 formed in 192 are formed so as to face each other coaxially.

(Configuration of stopper 202)
Next, the configuration of the stopper 202 will be described. The stopper 202 includes a stopper body 204 whose thickness direction is along the width direction of the base 84. The thickness of the stopper main body 204 is slightly smaller than the distance between the discontinuous portions on the upper end side of the peripheral wall 188, and can pass through the discontinuous portions. A recess 206 is formed at the upper end of the stopper body 204. The recess 206 is curved so as to open upward around an axis whose axial direction is the width direction of the base 84. The stopper 202 is provided so that the inner peripheral portion of the concave portion 206 is in sliding contact with the inner peripheral upper portion of the through hole 166. Further, the lower end portion of the stopper main body 204 is curved so as to protrude downward around an axis whose axial direction is the width direction of the base portion 84, and the lower end portion of the stopper main body 204 and the inner peripheral lower portion of the peripheral wall 188 are in sliding contact. The curvature of the lower end portion of the stopper main body 204 is set so that the stopper 202 can rotate around the inner peripheral upper portion of the notch 186 and the sliding contact portion of the recess 206 as it is.

  A spring mounting portion 208 is formed at the inner end in the vehicle width direction on the upper end side of the stopper main body 204. The spring mounting portion 208 is bent in a hook shape around an axis whose axial direction is the thickness direction of the stopper 202, and an upper end portion thereof is positioned on the inner side and in the vehicle width direction of the stopper main body 204. A locking groove 210 is formed at the upper end of the spring mounting portion 208. The locking groove 210 penetrates in the thickness direction of the spring mounting portion 208 and opens at the upper end portion of the spring mounting portion 208. Inside the locking groove 210 is a stopper side locking portion 226 of a stopper operating spring 222 described later. The connecting part 140 enters.

(Configuration of stopper operating spring 222)
Next, the configuration of the stopper operating spring 222 will be described. The stopper operating spring 222 includes a pair of coil portions 134 as with the stopper operating spring 132 in the first embodiment. A shoe side locking portion 224 is formed from the base end portion of these coil portions 134 instead of the shoe side locking portion 136. These shoe side locking portions 224 extend in a rod shape from the base end portion of the coil portion 134 to the outside in the vehicle width direction, and the tip thereof (at the end portion on the outer side in the vehicle width direction of the shoe side locking portion 224). In addition, the end of the shoe side locking portion 224 opposite to the coil portion 134 is bent in a hook shape outward in the width direction of the base portion 84. Further, the tip of the shoe side locking portion 224 bent in a hook shape is inserted into a spring locking hole 194 formed in the spring locking wall 192.

  On the other hand, the stopper operating spring 222 includes a stopper side locking portion 226 instead of the stopper side locking portion 138. The structure of the stopper side locking portion 226 is basically the same as that of the stopper side locking portion 138 and is constituted by a connecting portion 140 and a pair of rod-like portions 142, but the connecting portion 140 is not in pressure contact with the base portion 44. The inner periphery of the locking groove 210 is urged inward in the vehicle width direction by the urging force of the stopper operating spring 222.

<Operation and Effect of Second Embodiment>
Next, the operation and effect of the present embodiment will be described.

  As shown in FIG. 8, in the shoulder anchor device 160, the connecting portion 140 of the stopper side locking portion 226 entering the inside of the locking groove 210 is connected to the locking groove 210 by the biasing force of the stopper operating spring 222. The inner periphery is biased inward in the vehicle width direction. As a result, the stopper main body 204 of the stopper 202 tends to rotate outward in the vehicle width direction around the sliding contact portion between the inner peripheral portion of the recess 206 and the inner peripheral upper portion of the through hole 166. Therefore, in a state where the stopper main body 204 and the lock hole 22 face each other, a part of the stopper main body 204 of the stopper 202 enters the lock hole 22 by the biasing force of the stopper operating spring 222.

  In this way, a part of the stopper main body 204 enters the inside of the lock hole 22, and the lower end of the stopper main body 204 abuts on the inner peripheral lower portion of the lock hole 22, thereby restricting the downward movement of the stopper 202. When the downward movement of the stopper 202 is restricted in this way, the base 44 (that is, the slider 42) in which the inner peripheral portion of the through hole 166 is in contact with the inner peripheral portion of the recess 206 from above is moved downward. Is regulated.

  Next, in this state, the coil portion 134 is pressed downward against the urging force of the stopper operating spring 222, and the shoe side locking portion 224 inserted into the spring locking hole 194 of the spring locking wall 192 is pressed. When the coil part 134 is rotated around the front end side, the connecting part 140 of the stopper side locking part 226 that has entered the locking groove 210 of the spring mounting part 208 moves the inner peripheral part of the locking groove 210 outside the vehicle width direction. Press toward. When the inner peripheral portion of the locking groove 210 receives such a pressing force, the stopper main body 204 of the stopper 202 has a vehicle width centered on the sliding contact portion between the inner peripheral portion of the concave portion 206 and the inner peripheral upper portion of the through hole 166. Turn inward direction. By rotating the stopper main body 204 in this way, as shown in FIG. 9, when the stopper main body 204 comes out of the lock hole 22, the lowering restriction of the stopper 202 is canceled, and the slider 162 is placed on the guide wall 28 of the guide rail 12. The slider 162 can be moved up and down while guiding.

  In this way, the slider 162 is moved up and down to move the position of the slip joint 52 supported by the support shaft 50 to a desired height, and then the downward pressing force applied to the coil portion 134 is eliminated. In this state, if the stopper main body 204 of the stopper 202 faces the lock hole 22, the connecting portion 140 presses the inner peripheral portion of the locking groove 210 inward in the vehicle width direction by the biasing force of the stopper operating spring 222. Then, the stopper 202 is rotated so that the stopper main body 204 of the stopper 202 enters the lock hole 22 as shown in FIG.

  If the stopper 202 is not opposed to the lock hole 22 in the state where the downward pressing force is applied to the coil portion 134, the connecting portion 140 causes the stopper main body 204 to move the guide rail 12 by the biasing force of the stopper operating spring 222 described above. The base 14 is pressed. In this state, when the slider 162 is raised or lowered so that the stopper body 204 faces the lock hole 22 closest to the upper side or the lower side with respect to the desired height (position), the biasing force of the stopper operating spring 222 causes The stopper 202 rotates and the stopper body 204 enters the lock hole 22 (see FIG. 8).

  In this way, the coil portion 134 of the stopper operating spring 222 is pressed downward to cause the stopper body 204 of the stopper 202 to come out of the lock hole 22 and appropriately move up and down while guiding the slider 162 to the guide rail 12. The height of the slip joint 52 can be adjusted by eliminating the pressure on the coil portion 134 at or near the height of the stopper body 204 and inserting the stopper main body 204 of the stopper 202 into the lock hole 22.

  Here, in the shoulder anchor device 160, a portion to be pressed to pull out the stopper main body 204 from the lock hole 22, that is, the coil portion 134 urges the stopper main body 204 of the stopper 202 to the inside of the lock hole 22. This is a part of the stopper operating spring 222. Further, the stopper 202 is rotated by the pressing operation of the coil part 134 or the release of the pressing, so that the stopper main body 204 is pulled out from the lock hole 22 or the stopper main body 204 is inserted into the lock hole 22 side, that is, connected. The part 140 is also a part of the stopper operating spring 222.

  For this reason, in the shoulder anchor device 160, a configuration for urging the stopper 202 toward the lock hole 22, a configuration for pressing the stopper main body 204 out of the lock hole 22, and the stopper main body 204 with the lock hole The structure for allowing the stopper main body 204 to be inserted into the lock hole 22 side by the urging force of the stopper operating spring 222 can be constituted by one part, and the cost can be effectively reduced. Moreover, in spite of the fact that these various parts are made up of a single component, the coil spring is structurally bent as appropriate to form the shoe side locking portion 136 and the stopper side locking portion 138. In this sense, the cost can be effectively reduced.

10 Shoulder anchor device 12 Guide rail (guide member)
16 Vehicle 22 Lock hole (Regulation hole)
42 Slider 52 Slip joint 54 Webbing 112 Stopper 132 Stopper operating spring (biasing means)
160 Shoulder anchor device 162 Slider 202 Stopper 222 Stopper operating spring

Claims (4)

A slip joint that supports webbing;
A slider that supports the slip joint;
A plurality of regulating holes opened toward the slider side are formed at predetermined intervals along the longitudinal direction, and the guide member is slidably mounted along the longitudinal direction;
The slider is provided so as to be movable toward and away from the guide member, and enters the restriction hole by moving toward the guide member in a state of facing the restriction hole, and enters the restriction hole. In the state of entering, the movement in the sliding direction is restricted by the inner peripheral portion of the restriction hole, and a stopper that restricts the movement of the slider along the longitudinal direction of the guide member by receiving this movement restriction,
One end side is locked to the slider and the other end side is engaged with the stopper, and the stopper is urged to approach the guide member so that the stopper is inserted into the regulation hole. The intermediate portion between the one end side and the other end side is pressed, and the intermediate portion is displaced against the urging force, so that the other end side moves in a direction to separate the stopper from the guide member. Energizing means,
A shoulder anchor device comprising:   The urging means is formed by bending a rod-shaped spring material, and its longitudinal intermediate portion is formed in a coil shape, and the other end is formed by pressing and displacing the coil-shaped portion. The shoulder anchor device according to claim 1, wherein the side is configured to move the stopper.   The stopper is linearly movable in a direction in which the stopper comes in contact with and separates from the guide member, and the other end side of the urging means is displaced by pressing the intermediate portion of the urging means. The shoulder anchor device according to claim 1 or 2, wherein the shoulder anchor device is configured to be pressed and moved to a side opposite to the guide member.   The stopper is provided so as to be rotatable with respect to the slider in a direction in which the stopper is in contact with and away from the guide member, and the side opposite to the portion entering the restriction hole in the stopper through the center of the rotation is The shoulder anchor device according to claim 1 or 2, wherein the other end side of the urging means is configured to press toward the opposite side of the guide member by the urging force of the urging means.

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