JP5998111B2 - Seat belt buckle device and seat belt device - Google Patents

Description

  The present invention relates to a seat belt buckle device that fixes and releases a tongue plate provided on a webbing, and a seat belt device including the seat belt buckle device.

  The seat belt buckle is a device for fixing and releasing the tongue plate, and is installed on the side floor of the seat cushion or near the boundary between the seat cushion and the seat back. The current seat belt buckle has a structure in which the tongue plate can be fixed simply by inserting the tongue plate, and the tongue plate can be released simply by pressing the release button. Thus, since the seat belt buckle has a configuration in which the seat belt can be easily attached and detached, the seat belt buckle contributes to an improvement in the seat belt mounting rate.

  As a recent seat belt buckle, a type in which the position of the buckle body portion can be adjusted by supporting the buckle body portion into which the tongue plate is inserted with a lever-like buckle stay has become widespread. According to such a type, the buckle main body can be moved so as to rotate in the vehicle front-rear direction around the base of the buckle stay. In addition, for example, in the case of the seat belt buckle described in Patent Document 1, it is possible to tilt the buckle stay from its root to the seat cushion side.

JP 2013-103624 A

  If it is the structure which supports a buckle main-body part with a buckle stay and adjusts a position like the said seatbelt buckle, it will become possible to make webbing contact | adhere to the body according to the passenger | crew of various body shapes and attitude | positions. However, passenger cabin equipment such as seat belt buckles that are directly used by passengers has a significant impact on passengers in terms of functionality and aesthetics, and is important in producing the personality and image of the vehicle. It is a simple structure. Therefore, further improvements in functionality and the like are always required.

  In view of such a problem, the present invention is capable of enhancing the adhesion between an occupant and a webbing, and is functional and capable of producing a high-class feeling in a passenger compartment. The purpose is to provide.

  In order to solve the above problems, a representative configuration of a seat belt buckle device according to the present invention is a seat belt buckle device that fixes a tongue plate provided on a webbing, and is installed in the vicinity of a side portion of a seat. An anchor plate, a long plate, a buckle stay that tilts or stands up in the vehicle front-rear direction by one end rotatably connected to the anchor plate by a predetermined rotation shaft, and a buckle main body portion into which the tongue plate is inserted And a connecting mechanism that is installed inside the buckle main body and connected to the other end of the buckle stay, and that allows the buckle main body to tilt to the seat side, and in conjunction with a predetermined operation by the occupant to the connecting mechanism to the seat side. And a buckle tilting mechanism that gives a rotational moment to tilt.

  According to the said structure, a buckle main-body part inclines to the seat side in response to predetermined | prescribed operation | movement of a passenger | crew, for example, operation, such as raising a buckle stay. Therefore, it is easy for the passenger to insert the tongue plate and is functional, and a high-class feeling in the vehicle can be produced from the operation. In addition, since the buckle body part tilts toward the seat, the adhesion between the webbing and the occupant is increased, so that the occupant restraining force of the seat belt can be increased.

  The buckle stay has a predetermined bearing hole in the vicinity of the other end, and the coupling mechanism is rod-shaped and has an outer diameter smaller than the inner diameter of the bearing hole of the buckle stay, and extends in the vehicle width direction to pass through the bearing hole. Of the support shaft member, a buckle base to which one end of the support shaft member is fixed, a predetermined plate member fixed to the other end of the support shaft member, and a support shaft member And a first coil spring installed between the plate member and the buckle stay at the periphery, and the coupling mechanism is tilted with respect to the bearing hole of the buckle base around the support shaft member to the seat side. Tilt.

  According to the above coupling mechanism, the buckle body can be supported in a stable posture with respect to the buckle stay by the pressure of the first coil spring while allowing the buckle body to tilt toward the seat.

  The plate member is fixed to the other end of the support shaft member on the side opposite to the seat in the vehicle width direction, and the buckle tilting mechanism extends in the longitudinal direction of the buckle stay on the side opposite to the seat on the buckle stay. It is preferable to have a slider that is slidably provided and applies a rotational moment to the coupling mechanism by pushing up the plate member by sliding. According to this slide and the connection mechanism, the buckle body can be suitably tilted.

  The slider includes a first slider disposed on the base side of the buckle stay, a second slider disposed on the buckle body portion side of the buckle stay and in direct contact with the plate member, and the first slider and the second slider. An elastic member interposed between the first slider and the second slider may be included. With this configuration, for example, when a force that causes the buckle body to tilt to the opposite side of the seat due to the weight of the occupant is applied, the force can be absorbed by the elastic member, thus preventing damage to the slider. Can do. This elastic member may be a coiled second coil spring, which makes it possible to suitably perform the above function.

  The buckle tilting mechanism further includes a flat cam having a curved surface provided around the rotation shaft on the anchor plate and gradually increasing in distance from the center of the rotation shaft from the vehicle front side toward the vehicle upper side. When the buckle stay rises, the slider may be pushed by the curved surface and slid toward the buckle main body. By such a buckle tilting mechanism having a slider and a flat cam, it becomes possible to suitably link the tilting operation of the buckle main body to the standing operation of the buckle stay.

  The buckle tilting mechanism further includes a disc cam provided on the anchor plate together with the buckle stay by the rotating shaft, and the disc cam whose distance from the rotating shaft to the outer periphery changes in the circumferential direction, and a slider May be pushed by the curved surface on the outer periphery of the disc cam and slid toward the buckle body. Even with the buckle tilting mechanism having such a slider and a disc cam, the tilting operation of the buckle main body can be suitably linked to the standing motion of the buckle stay or the like.

  The buckle tilting mechanism further includes a pinion gear that rotates due to a predetermined operation by an occupant, and a rack gear that meshes with the pinion gear and moves horizontally, and the rack gear that slides the slider when the pinion gear rotates. May be. In addition to such a slider, a buckle tilting mechanism having a pinion gear and a rack gear can suitably link the tilting operation of the buckle body to the standing operation of the buckle stay.

  The disk cam or the pinion gear may rotate relative to the buckle stay when the buckle stay rises. The buckle stay tilts or stands up by rotating about the rotation axis at the base, and at this time, by providing a disc cam or pinion gear that is not linked to the buckle stay, the buckle stay and disc cam or The pinion gear rotates relatively. Therefore, the slider can be suitably slid by the curved surface of the disc cam and the rotation of the pinion gear.

  The buckle tilting mechanism further includes a motor that rotates the disc cam or the pinion gear, and the motor may operate due to the standing operation of the buckle stay or the connecting operation of the tongue plate to the buckle main body. . With this configuration, it is possible to suitably link the tilting operation of the buckle body part to the operation of raising the buckle stay by the occupant or the operation of inserting and connecting the tongue plate to the buckle body part.

  The buckle tilting mechanism described above further includes a first spring element that constantly applies a force to the slider toward the buckle main body, and a second spring element connected to a predetermined location other than the slider and the buckle stay. The second spring element that pulls the slider toward the base side of the buckle stay when the buckle stay is tilted and releases the slider when the buckle stay is raised may be included. Also with this configuration, the tilting operation of the buckle body can be linked to the standing operation of the buckle stay. The first spring element or the second spring element may be a third or fourth coil spring.

  The seat belt buckle device is further installed near the side of the seat and extends in the vehicle front-rear direction to which the anchor plate is slidably attached. The seat belt buckle device can interfere with the buckle stay from the front side of the vehicle. And a stopper portion that interferes with the buckle stay and stands up when the plate slides on the rail toward the front side of the vehicle.

  According to the above configuration, for example, when an occupant with a large physique moves the buckle main body to the front side of the vehicle, the buckle main body is raised by the stopper in conjunction with this movement, and the buckle main body moves toward the cushion portion. Tilt. Therefore, with this configuration, the tongue plate can be more easily inserted, and the sense of quality increases.

  In order to solve the above problems, a typical configuration of a seat belt apparatus according to the present invention includes the above-described seat belt buckle apparatus. With this configuration, it is possible for a passenger to realize a seat belt device that is easy to insert a tongue plate and is functional, and that can produce a high-class feeling in the vehicle from its operation.

  According to the present invention, it is possible to provide a seat belt buckle device and a seat belt device that can enhance the adhesion between the occupant and the webbing, and can provide a functional and high-class feeling in the passenger compartment. It becomes possible.

It is the perspective view which illustrated the outline of the seatbelt buckle device concerning a 1st embodiment of the present invention. It is an enlarged view of the buckle apparatus of FIG. It is a fragmentary sectional view of each figure of FIG. FIG. 3 is an exploded view of the buckle device of FIG. 2 and the like. It is the figure which expanded anchor plates, such as Drawing 2 (a). It is a figure which illustrates the modification of the buckle apparatus of FIG. It is a figure which illustrates 2nd Embodiment of the seatbelt buckle apparatus concerning this invention. It is the figure which illustrated the modification of the seatbelt buckle apparatus of FIG. It is a figure which illustrates 3rd Embodiment of the seatbelt buckle apparatus concerning this invention. It is the figure which illustrated the modification of the seatbelt buckle apparatus of FIG. It is a figure which illustrates 4th Embodiment of the seatbelt buckle apparatus concerning this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(First embodiment)
FIG. 1 is a perspective view illustrating an outline of a seat belt buckle device (hereinafter referred to as a buckle device 100) according to a first embodiment of the present invention. FIG. 1 illustrates the entire seat belt 101 including the buckle device 100 as viewed from the left front seat side for the right front seat (seat 102). In each drawing including FIG. 1, the vehicle longitudinal direction is represented by the X axis, the vehicle width direction is represented by the Y axis, and the vertical direction is represented by the Z axis.

  The seat belt 101 is a safety device provided in the seat 102, and restrains the occupant to the seat 102 using a belt-like webbing 104. The webbing 104 is wound around the retractor 106 at the base side, and the tip side is folded downward through a through anchor 108 attached to the upper center pillar 107 and fixed to the webbing anchor 110. A tongue plate 112 is provided between the through anchor 108 and the webbing anchor 110, and when the occupant inserts the tongue plate 112 into the buckle device 100, the seat belt 101 is put on.

  The buckle device 100 is a device that fixes and releases the tongue plate 112 provided on the webbing 104. The tongue plate 112 is fixed by being inserted into an opening 116 (see FIG. 2A) of the buckle main body 114 of the buckle device 100, and is released by pressing a release button 118 adjacent to the opening 116.

  FIG. 2 is an enlarged view of the buckle device 100 of FIG. FIG. 2A is an enlarged view of the buckle device 100 of FIG. The buckle device 100 is roughly divided into a buckle main body 114 into which the tongue plate 112 is inserted, a buckle stay 120 that supports the buckle main body 114, and a floor near the side portion of the seat 102 (see FIG. 1) as a base. It is comprised with the anchor plate 121 installed.

  The buckle device 100 is configured such that the buckle main body 114 tilts toward the seat 102 in conjunction with a predetermined operation by the occupant. In order to realize this tilting operation, the buckle device 100 is provided with a slider 122 and a flat cam 154 for sliding the slider 122 as the buckle tilting mechanism 160.

  For example, FIG.2 (b) is the figure which stood up the buckle apparatus 100 of Fig.2 (a). In the buckle device 100, when the occupant stands the buckle stay 120, the slider 122 on the buckle stay 120 is pushed by the flat cam 154 and slides in conjunction with this. When pressed by the slider 122, the buckle body 114 is inclined to the seat 102 side (see FIG. 1) and the tongue plate 112 is easily inserted. According to these operations and postures, not only can a functional and high-class feeling be produced, but also the webbing 104 can be brought into close contact with the occupant by reducing the gap between the webbing 104 and the occupant.

  FIG. 3 is a partial cross-sectional view of each figure of FIG. 3A is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. 3B is a cross-sectional view taken along the line BB in FIG. 2B. As illustrated in FIG. 3A, the slider 122 is connected to the plate member 124 inside the buckle main body 114. When the slider 122 is guided and slid by the flat cam 154 as shown in FIG. The plate member 124 is pushed to tilt the buckle body 114 toward the sheet 102 side.

  FIG. 4 is an exploded view of the buckle device 100 of FIG. The anchor plate 121 is illustrated in FIG. 5 later. As illustrated in FIG. 4, the buckle stay 120 has a long plate shape, and is provided with a first bearing hole 128 at one end on the base side and a second bearing hole 130 at the other end on the buckle body 114 side. Is provided. A rotation shaft 132 (see FIG. 2A and the like) is passed through the first bearing hole 128, and a support shaft member 134 is passed through the second bearing hole 130. As a result, the buckle device 100 can perform operations such as tilting in the vehicle front-rear direction and standing up at each of the root of the buckle stay 120 and the connecting portion between the buckle stay 120 and the buckle main body 114.

  The connecting mechanism 126 that connects the buckle stay 120 and the buckle body 114 is mainly configured to include a support shaft member 134, a plate member 124, and a first coil spring 136. First, the support shaft member 134 is a rod-shaped member that is passed through the buckle base 138 and the buckle stay 120 of the buckle body 114.

  4, the upper case 115a, the lower case 115b, and the buckle base 138 are roughly illustrated as the buckle main body 114. The buckle base 138 is a member that is disposed inside the upper case 115a and the lower case 115b, and serves as a base for mounting each internal structure (not shown) that realizes a detaching function of the tongue plate 112 (see FIG. 1). The support shaft member 134 has a hole 140 provided at an end of the buckle base 138 on the buckle stay 120 side and a second bearing hole 130 of the buckle stay 120 on the lower case 115b side (the seat 102 side in FIG. 1). Passed through.

  3A, after the buckle device 100 is assembled, the support shaft member 134 extends in the vehicle width direction, one end 134a on the seat 102 side is fixed to the buckle base 138, and the other end on the opposite side. The plate member 124 is fixed to 134b. The support shaft member 134, the buckle base 138, and the plate member 124 function as a connecting mechanism 126 that connects the buckle body 114 and the buckle stay 120.

  Here, the outer diameter D1 of the support shaft member 134 is set to be smaller than the inner diameter D2 of the second bearing hole 130 of the buckle stay 120. Further, the second bearing hole 130 of the buckle stay 120 is formed to be inclined with respect to the thickness direction of the buckle stay 120. Accordingly, the support shaft member 134 can move so as to incline in the axial direction with respect to the buckle stay 120, and can tilt to the seat 102 side (see FIG. 1) of the buckle main body 114.

  As illustrated in FIG. 4, a plate member 124 is attached to the support shaft member 134. The plate member 124 is a dome-shaped member, and is fixed to the other end 134b of the support shaft member 134 so as to cover a portion where the buckle base 138 and the buckle stay 120 overlap. A first coil spring 136 is disposed inside the plate member 124. The first coil spring 136 is compressed between the plate member 124 and the buckle stay 120.

  As illustrated in FIG. 3A, the first coil spring 136 presses the buckle stay 120 toward the buckle base 138 by its elastic force. With this pressure, the buckle stay 120 and the buckle base 138 can be pressed against each other and their postures can be stabilized. Further, the elastic force of the first coil spring 136 absorbs vibrations or the like that may occur between the buckle stay 120 and the buckle body 114, and it is possible to prevent the generation and damage of noise due to the collision between members. ing.

  Two slits 142a and 142b are provided on the center side in the longitudinal direction of the buckle stay 120 of FIG. A slider 122 is slidably attached to the slits 142a and 142b on the side opposite to the sheet 102. The slider 122 is a first slider 144 disposed on the base side of the buckle stay 120, a second slider 146 disposed on the buckle main body 114 side of the buckle stay 120, and an elastic member interposed therebetween. A two-coil spring 148 is included.

  The first slider 144 and the second slider 146 have claw portions 150 and 152, respectively, and are installed to be slidable in the longitudinal direction of the buckle stay 120 with respect to the slits 142a and 142b. As shown in FIG. 3B, the first slider 144 is guided by the flat cam 154 of the anchor plate 121 and slides toward the buckle main body 114 side. The second slider 146 slides together with the first slider 144 and directly contacts the plate member 124 to push it up. Then, a rotational moment about the support shaft member 134 is given to the connection mechanism 126, and the connection mechanism 126 is inclined with respect to the second bearing hole 130 of the buckle stay 120. As a result, the buckle main body 114 tilts toward the seat 102 side.

  The second coil spring 148 of FIG. 4 elastically connects the second slider 146 to the first slider 144. When the second coil spring 148 is provided, for example, in the state of FIG. 3B, when a force is applied to the buckle main body 114 to the side opposite to the seat 102 (see FIG. 1) due to the weight of the occupant. The force can be absorbed between the second slider 146 and the first slider 144 to prevent each damage or the like. In addition, as an elastic member in place of the second coil spring 148, a leaf spring or a resin elastic member can be used.

  FIG. 5 is an enlarged view of the anchor plate 121 shown in FIG. The anchor plate 121 illustrated in FIG. 5A is installed on the floor near the side of the vehicle seat 102 (see FIG. 1) using bolts or the like. The anchor plate 121 is provided with a hole 152 through which the rotation shaft 132 is passed. The rotating shaft 132 is passed through the hole 152 and the first bearing hole 128 of the buckle stay 120 of FIG. 4 to connect them. In the present embodiment, as shown in FIG. 1, the anchor plate 121 is installed so that the rotation direction of the buckle stay 120 around the rotation shaft 132 is the vehicle front-rear direction (X-axis direction in the drawing).

  FIG. 4B is a diagram illustrating the flat cam 154 of the anchor plate 121 of FIG. The flat cam 154 is a part that contacts and slides the first slider 144 (see FIG. 3B), and is provided around the rotation shaft 132 on the anchor plate 121. The curved surface 156 of the flat cam 154 gradually increases in distance from the center P of the rotating shaft 132 from the vehicle front side to the vehicle upper side (r1 <r2 <r3). Accordingly, when the buckle stay 120 stands up as shown in FIG. 2B, the first slider 144 is pushed by the curved surface 156 and slides toward the buckle main body 114 side.

  As described above, in the buckle device 100 in FIG. 1, the buckle main body 114 tilts toward the seat 102 in conjunction with the operation of the buckle stay 120 only by raising the buckle stay 120. Therefore, the tongue plate 112 is easy to insert and functional for the occupant, and a high-class feeling in the vehicle can be produced from its operation. In addition, since the buckle body 114 tilts toward the seat 102, the adhesion between the webbing 104 and the occupant is increased, so that the occupant restraining force of the seat belt 101 can be increased.

(Modification)
FIG. 6 is a diagram illustrating a modification of the buckle device 100 of FIG. FIG. 6 illustrates the buckle device 200 for the right front seat as viewed from the vehicle inner side in the vehicle width direction. This buckle device 200 is different from the buckle device 100 of FIG. 1 in that the anchor plate 202 is movable in the vehicle front-rear direction.

  First, the buckle device 100 has a base member 206 on which a rail 204 is formed. The base member 206 is installed on the side portion 103 of the seat 102 so that the rail 204 extends in the vehicle front-rear direction. An anchor plate 202 is attached to the rail 204 so as to be slidable in the vehicle longitudinal direction. Since the anchor plate 202 is attached to the rail 204, a part of the shape is different from the anchor plate 121 of the type attached to the floor in FIG. 1 except that the flat plate 154 and the rotating shaft 132 are attached. The structure is the same as that of the anchor plate 121.

  A stopper portion 208 is provided on the upper portion of the base member 206 in front of the vehicle. The stopper portion 208 can interfere with the buckle stay 120 from the front side of the vehicle. When the anchor plate 202 slides on the rail 204 toward the front side of the vehicle, the stopper portion 208 interferes with the buckle stay 120 and stands up. According to the buckle device 200 having these configurations, for example, when an occupant with a large physique moves the buckle body 114 to the front side of the vehicle, the buckle body 114 is raised by the stopper 208 in conjunction with this movement, and the buckle The main body 114 tilts toward the sheet 102 side. Therefore, the buckle device 200 also facilitates the insertion of the tongue plate 112 (see FIG. 1), and can contribute to a high-quality feeling in the passenger compartment.

(Second Embodiment)
FIG. 7 is a diagram illustrating a second embodiment of the seat belt buckle device according to the invention. As illustrated in FIG. 7A, the buckle device 220 (see FIG. 7B) of the second embodiment has a disk cam 224 as the buckle tilting mechanism 222, and the plane illustrated in FIG. 2 and the like. Different from the buckle device 100 having the cam 154.

  The disc cam 224 is attached to the anchor plate 228 together with the buckle stay 120 (see FIG. 7B) by the rotation shaft 226. The disc cam 224 has a major axis a and a minor axis b but is a so-called oval shape that is not a simple ellipse, and depicts an arc with a sharp circumference on one side of the major axis a. With these configurations, the disc cam 224 is not constant because the distance from the rotation shaft 226 to the outer periphery changes around the rotation shaft 226. In the present embodiment, the disc cam 224 is installed with the long axis a directed in the vehicle vertical direction.

  As illustrated in FIG. 7B, the first slider 144 of the slider 122 contacts the curved surface 230 on the outer periphery of the disc cam 224. When the occupant stands up the buckle stay 120 as shown in FIG. 7C, the slider 122 slides toward the buckle main body 114 so as to be pushed by the curved surface 230 of the disc cam 224. As a result, as described with reference to FIG. 3B, a rotational moment is applied to the coupling mechanism 126 from the slider 122, whereby the buckle main body 114 tilts toward the seat 102. As described above, the buckle tilt mechanism 222 using the disc cam 224 can also suitably link the standing operation of the buckle stay 120 and the tilt operation of the buckle main body 114.

  In the example of FIG. 7, even if the disc cam 224 itself does not rotate, when the buckle stay 120 rotates around the base rotation shaft 226 and stands up, the disc cam 224 is interlocked with the buckle stay 120. Therefore, the disc cam 224 and the buckle stay 120 rotate relatively. However, the disk cam 224 can be rotated using a motor 232 as illustrated in FIG.

  FIG. 8 is a view illustrating a modification of the seat belt buckle device of FIG. In the buckle device 234, by using the motor 232, the tilting operation of the buckle main body 114 can be interlocked with the connecting operation of the tongue plate 112.

  As illustrated in FIG. 8A, the buckle device 234 includes a sensor 236 in addition to the motor 232. The sensor 236 is installed inside the buckle body 114, and senses the connection of the tongue plate 112 (see FIG. 8B) to the buckle body 114 by an electrical or mechanical technique. When the tongue plate 112 is connected, the sensor 236 operates the motor 232 by sending a predetermined signal or the like. Then, as illustrated in FIG. 8B, the disc cam 224 rotates with its long axis “a” directed toward the slider 122 via the rotating shaft 238 that can be driven by the driving force of the motor 232, thereby The slider 122 slides and the buckle main body 114 tilts.

  With the buckle device 234 having such a configuration, when the occupant wears the webbing 104, the buckle main body 114 automatically tilts toward the seat 102 side. Production is possible. Note that the configuration in which the disk cam 224 is driven using the motor 232 can also be used when the tilting operation of the buckle main body 114 is linked to the standing operation of the buckle stay 120.

(Third embodiment)
FIG. 9 is a view illustrating a third embodiment of the seat belt buckle device according to the invention. As illustrated in FIG. 9A, the buckle device 240 is different from the above buckle devices in that a buckle tilting mechanism 242 includes a pinion gear 248 and a rack gear 250.

  The pinion gear 248 and the rack gear 250 are also configured to interlock the tilting operation of the buckle main body 114 with the standing operation of the buckle stay 120. First, the pinion gear 248 is provided around a rotating shaft 252 that rotatably connects the buckle stay 120 and the anchor plate 228, and the buckle stay 120 rotates around the rotating shaft 252 and stands up. Rotates relative to 120.

  The rack gear 250 extends to connect the first slider 144 and the pinion gear 248, and has linearly aligned teeth that mesh with the teeth of the pinion gear 248. When the buckle stay 120 rises as shown in FIG. 9B, the rack gear 250 rotates around the pinion gear 248 and moves horizontally toward the buckle main body 114 so as to be sent to the teeth of the pinion gear 248. When pushed by the rack gear 250, the slider 122 also slides toward the buckle body 114, and a rotational moment is applied to the coupling mechanism 126 as shown in FIG. As described above, even with the configuration using the gear unit 246, the tilting operation of the buckle main body 114 can be linked to the standing operation of the buckle stay 120.

  In addition to the gear, a motor 232 can be used. FIG. 10 is a diagram illustrating a modification of the seat belt buckle device of FIG. In the buckle device 260 illustrated in FIG. 10A, a sensor 236 and a motor 232 are provided together with the gear unit 262, and the pinion gear 248 is configured to rotate by the driving force of the motor 232.

  The gear unit 262 includes the above-described pinion gear 268 and a rack gear 266 provided directly on the side of the first slider 144. The rack gear 266 has teeth arranged linearly, and when the pinion gear 264 rotates, the rack gear 266 moves horizontally along the longitudinal direction of the buckle stay 120 together with the first slider 144.

  In the buckle device 260, when the tongue plate 112 is connected to the buckle main body 114, the sensor 236 detects this, and the motor 232 is activated. Then, as illustrated in FIG. 10B, the pinion gear 264 rotates and the slider 122 slides toward the buckle body 114 via the rack gear 266, thereby tilting the buckle body 114. If this buckle device 260 is used for the seat belt 101, it is possible to improve the occupant restraining force and produce a high-class effect. The configuration in which the gear unit 262 is driven using the motor 232 can also be used when the tilting operation of the buckle main body 114 is linked to the standing operation of the buckle stay 120.

(Fourth embodiment)
FIG. 11 is a view illustrating a fourth embodiment of the seat belt buckle device according to the invention. A buckle device 280 illustrated in FIG. 11A is different from the above buckle devices in that two spring elements are used as the buckle tilting mechanism 282.

  As the spring element, a third coil spring 284 and a fourth coil spring 286 are used. First, the third coil spring 284, which is the first spring element, connects the slider 288 and the connection point P1 on the buckle main body 114 on the buckle stay 120. A fourth coil spring 286, which is a second spring element, connects the slider 288 and a connection point P2 on the anchor plate 290 at least on the vehicle rear side with respect to the rotating shaft 132.

  In the state where the buckle stay 120 in FIG. 11A is tilted forward, the fourth coil spring 286 pulls the slider 288 to the base side of the buckle stay 120 (lower limit of the moving range). The restoring force of the fourth coil spring 286 is set to be stronger than that of the third coil spring 284, and the third coil spring 284 is also pulled together with the slider 288. At this time, the third coil spring 284 constantly applies a force to the slider 288 toward the buckle body 114, but the force is offset by the fourth coil spring 286.

  When the buckle stay 120 is raised as shown in FIG. 11B, the restoring force of the fourth coil spring 286 is canceled by the slider 288 and the connection point P <b> 2 approaching, and the fourth coil spring 286 releases the slider 288. . Then, the slider 288 is pulled toward the buckle body 114 by the restoring force of the third coil spring 284, and the buckle body 114 is tilted toward the seat. As described above, the buckle device 280 can also interlock the tilting operation of the buckle body 114 with the standing operation of the buckle stay 120.

  The first and second spring elements are not limited to coil springs, and may be appropriately used as long as the slider 288 has a restoring force in each direction. Further, the slider 288 used in the present embodiment has the same configuration as the slider 122 shown in FIG. 2A except that the first coil spring 148 is not provided. However, it is also possible to use the slider 122 for the buckle device 280. In this case, if the restoring force of the first coil spring 148 is set to be stronger than that of the fourth coil spring 286, the first coil spring 148 is pulled by the fourth coil spring 286 even when the buckle stay 120 is tilted. It does not stretch and is suitable.

  Each of the buckle devices described above can be used for the seat belt 101, and can also be applied to a configuration using the rail 204 illustrated in FIG.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can be implemented by various methods. Can be carried out. The invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

  Therefore, it is obvious for those skilled in the art that various changes and modifications can be conceived within the scope of the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  INDUSTRIAL APPLICABILITY The present invention can be used for a seat belt buckle device that fixes and releases a tongue plate provided on a webbing, and a seat belt device including the seat belt buckle device.

DESCRIPTION OF SYMBOLS 100 ... Buckle apparatus of 1st Embodiment, 101 ... Seat belt, 102 ... Seat, 103 ... Side part of sheet, 104 ... Webbing, 106 ... Retractor, 107 ... Center pillar, 108 ... Through anchor, 110 ... Webbing anchor, 112 ... tongue plate, 114 ... buckle body, 115a ... upper case of buckle body, 115b ... lower case of buckle body, 116 ... opening of buckle body, 118 ... release button, 120 ... buckle stay, 121 ... anchor plate , 122 ... slider, 124 ... plate member, 126 ... coupling mechanism, 128 ... first bearing hole of the buckle stay, 130 ... second bearing hole of the buckle stay, 132 ... rotating shaft, 134 ... support shaft member, 134a ... support shaft One end of member, 134b ... support The other end of the shaft member, 136 ... the first coil spring, 138 ... the buckle base, 140 ... the hole in the buckle base, 142a, 142b ... the slit in the buckle stay, 144 ... the slider, 146 ... the second slider, 148 ... the second coil Spring, 150 ... Slider tab, 152 ... Second slider tab, 154 ... Planar cam, 156 ... Planar cam curved surface, 160 ... Buckle tilt mechanism, 200 ... Modified buckle device, 202 ... Modified anchor Plate 204 204 Rail 206 Base member 208 Stopper 220 Second buckle device 222 Buckle tilting mechanism 224 Disc cam 226 Rotating shaft 228 Anchor plate 230 Curved surface of disk cam, 232 ... motor, 234 ... first embodiment Buckle device, 236 ... sensor, 238 ... rotating shaft, 240 ... buckle device of the third embodiment, 242 ... buckle tilting mechanism, 248 ... pinion gear, 250 ... rack gear, 252 ... rotating shaft, 260 ... third Buckle device of modification of embodiment, 262 ... gear unit, 264 ... pinion gear, 266 ... rack gear, 280 ... buckle device of fourth embodiment, 282 ... buckle tilt mechanism, 284 ... third coil spring, 286 ... fourth Coil spring, 288 ... slider, 290 ... anchor plate, 292 ... rotating shaft, a ... long axis of the disc cam, b ... short axis of the disc cam, D1 ... outer diameter of the support shaft member, D2 ... first of the buckle stay 2 Inner diameter of bearing hole

Claims (13)

A seat belt buckle device for fixing a tongue plate provided on a webbing,
An anchor plate installed near the side of the seat;
A buckle stay that is in the shape of a long plate and tilts or stands up in the vehicle longitudinal direction by one end rotatably connected to the anchor plate by a predetermined rotation shaft;
A buckle body portion into which the tongue plate is inserted;
A coupling mechanism that is installed inside the buckle body part and coupled to the other end of the buckle stay, and allows the buckle body part to tilt toward the seat;
A buckle tilting mechanism that gives a rotational moment to tilt the connection mechanism toward the seat side in conjunction with the operation of raising the buckle stay ;
Equipped with a,
The buckle stay has a predetermined bearing hole in the vicinity of the other end,
The coupling mechanism is
A support shaft member that is rod-shaped and has an outer diameter smaller than the inner diameter of the bearing hole of the buckle stay, extends in the vehicle width direction, and is passed through the bearing hole;
A buckle base that is the basis of the internal structure of the buckle main body and to which one end of the support shaft member is fixed;
A predetermined plate member fixed to the other end of the support shaft member;
A first coil spring installed between the plate member and the buckle stay around the support shaft member;
Including
Wherein the connecting mechanism, the support shaft member seatbelt buckle apparatus characterized that you tilt to the seat side by inclined relative to the buckle base of the bearing hole about the. The plate member is fixed to the other end of the support shaft member opposite to the seat in the vehicle width direction,
The buckle tilting mechanism is installed to be slidable in the longitudinal direction of the buckle stay on the side opposite to the seat on the buckle stay, and applies the rotational moment to the coupling mechanism by pushing up the plate member by sliding. The seat belt buckle device according to claim 1 , further comprising a slider. The slider is
A first slider disposed on the base side of the buckle stay;
A second slider disposed on the buckle body portion side of the buckle stay and in direct contact with the plate member;
An elastic member interposed between the first slider and the second slider and elastically connecting the first slider and the second slider;
The seat belt buckle device according to claim 2 , comprising: The seat belt buckle device according to claim 3 , wherein the elastic member is a coiled second coil spring. The buckle tilting mechanism is further provided with a flat cam having a curved surface provided around the rotating shaft on the anchor plate and gradually increasing in distance from the center of the rotating shaft toward the vehicle upper side from the vehicle front side. Have
The seatbelt buckle device according to any one of claims 2 to 4 , wherein when the buckle stay stands, the slider is pushed by the curved surface and slides toward the buckle main body. The buckle tilting mechanism further includes a disc cam provided along with the buckle stay on the anchor plate by the rotary shaft, and a disc cam whose distance from the rotary shaft to the outer periphery changes in the circumferential direction. And
5. The seat belt buckle device according to claim 2 , wherein the slider is pushed by a curved surface on an outer periphery of the disc cam and slides toward the buckle main body side. 6. The buckle tilting mechanism further includes
A pinion gear that rotates due to a predetermined operation by an occupant;
A rack gear that meshes with the pinion gear and moves horizontally, and the rack gear that slides the slider when the pinion gear rotates;
The seat belt buckle device according to any one of claims 2 to 4 , wherein the seat belt buckle device is provided. The seat belt buckle device according to claim 6 or 7 , wherein the disc cam or the pinion gear rotates relative to the buckle stay when the buckle stay stands. The buckle tilting mechanism further includes a motor for rotating the disk cam or the pinion gear,
8. The seat belt buckle device according to claim 6 , wherein the motor operates due to a standing operation of the buckle stay or a connecting operation of the tongue plate to the buckle main body. 9. The buckle tilting mechanism further includes
A first spring element that constantly applies a force to the slider toward the buckle body,
A second spring element connected to the slider and a predetermined location other than the buckle stay, wherein when the buckle stay is tilted, the slider is opposed to the first spring element and the base side of the buckle stay A second spring element that releases the slider when the buckle stay is raised;
The seat belt buckle device according to any one of claims 2 to 4 , wherein the seat belt buckle device is included. The seat belt buckle device according to claim 10 , wherein the first spring element or the second spring element is a third or fourth coil spring. The seat belt buckle device further includes
A rail installed in the vicinity of the side of the seat and extending in the vehicle front-rear direction to which the anchor plate is slidably mounted;
A stopper that can interfere with the buckle stay from the front side of the vehicle, and when the anchor plate slides on the rail toward the front side of the vehicle, the stopper portion interferes with the buckle stay and stands up;
The seat belt buckle device according to any one of claims 1 to 11 , further comprising: A seat belt device comprising the seat belt buckle device according to any one of claims 1 to 12 .

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