JP2019055724A - Buckle lifter - Google Patents

Abstract

To provide a buckle lifter which enables further space saving.SOLUTION: A buckle lifter 1 includes: a wire 7 connected to a buckle 10 at one end; a wire guide 8 which curves the other end side of the wire 7 in a direction different from an extension direction of one end side; a slider 5 with which the other end of the wire 7 is connected and which may move along an extension direction of the other end side of the wire 7; a spindle shaft 4 which is threadedly engaged with the slider 5 in a rotatable manner and moves a movable body in one direction by rotation; and a motor 2 which drives the spindle shaft 4. A screw axis of the spindle shaft 4 is offset from a wire axis of the other end side of the wire 7 and these axes are arranged in parallel to each other.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a buckle lifter.

  A device that allows the buckle to move up and down, moves the buckle upward when inserting the tongue of the seat belt into the buckle, and moves the buckle downward when the seat belt is not used (hereinafter referred to as “buckle lifter”) ) Is known (for example, Patent Document 1).

German Patent Application Publication No. 102013004783

  Since the buckle lifter is disposed in the vicinity of the buckle of the seat, for example, in a space such as the side or under the seat, it is desirable that the buckle lifter can be made as small as possible. Conventional buckle lifters have room for further improvement in terms of space saving.

  An object of the present disclosure is to provide a buckle lifter that enables further space saving.

  A buckle lifter according to an aspect of the present invention includes a buckle, a wire having one end connected to the buckle, and a wire guide that curves the other end of the wire in a direction different from the extending direction of the one end. The other end of the wire is connected, and a slider that is movable along the extending direction of the other end of the wire, and is rotatably screwed to the slider, and moves the moving body in one direction by rotation. A feed screw and a motor for driving the feed screw, wherein the screw shaft of the feed screw and the wire shaft on the other end side of the wire are separate axes and arranged in parallel.

  According to the present disclosure, it is possible to provide a buckle lifter that enables further space saving.

It is a perspective view of the buckle lifter concerning a 1st embodiment in the state where a buckle exists in a storing position. It is a disassembled perspective view of the buckle lifter shown in FIG. It is a figure which shows typically the positional relationship of each axis | shaft and buckle of a buckle lifter. It is a perspective view of the buckle lifter which concerns on 1st Embodiment in the state which has a buckle in a mounting position. It is a mimetic diagram showing the 1st composition of the modification which changed the arrangement of the motor in the buckle lifter of a 1st embodiment. It is a schematic diagram which shows the 2nd structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 1st Embodiment. It is a schematic diagram which shows the 3rd structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 1st Embodiment. It is a figure which shows typically the positional relationship of each axis | shaft and buckle of the buckle lifter which concern on 2nd Embodiment. It is a schematic diagram which shows the 1st structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 2nd Embodiment. It is a schematic diagram which shows the 2nd structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 2nd Embodiment. It is a schematic diagram which shows the 3rd structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 2nd Embodiment. It is a figure which shows typically the positional relationship of each axis | shaft and buckle of the buckle lifter which concern on 3rd Embodiment. It is a schematic diagram which shows the 1st structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 3rd Embodiment. It is a schematic diagram which shows the 2nd structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 3rd Embodiment. It is a schematic diagram which shows the 3rd structure of the modification which changed arrangement | positioning of the motor in the buckle lifter of 3rd Embodiment.

  Hereinafter, embodiments will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  In the following description, the x direction, the y direction, and the z direction are directions perpendicular to each other, the x direction and the y direction are horizontal directions, and the z direction is a vertical direction. The x direction is the vehicle front-rear direction when the buckle lifter 1 is installed in the vehicle, the vehicle front side is the x positive direction, and the vehicle rear side is the x negative direction. The y direction is the left-right direction of the vehicle, the left side of the vehicle is the positive y direction, and the right side of the vehicle is the negative y direction. The z direction is the z positive direction on the upper side and the z negative direction on the lower side.

[First Embodiment]
The first embodiment will be described with reference to FIGS. First, the configuration of the buckle lifter 1 according to the first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of the buckle lifter 1 according to the first embodiment in a state where the buckle 10 is in the storage position A. FIG. FIG. 2 is an exploded perspective view of the buckle lifter 1 shown in FIG. FIG. 3 is a diagram schematically showing the positional relationship between each axis of the buckle lifter 1 and the buckle 10. FIG. 4 is a perspective view of the buckle lifter 1 according to the first embodiment in a state where the buckle 10 is in the mounting position B. FIG.

  The buckle lifter 1 is a device that moves a buckle 10 provided on a vehicle seat between a storage position A (see FIG. 1) and a mounting position B (see FIG. 4). When the occupant is seated, the buckle 10 is moved from the storage position A to the mounting position B by the buckle lifter 1, so that the occupant can easily attach the tongue to the buckle 10.

  As shown in FIGS. 1 to 3, the buckle lifter 1 includes a motor 2, a gear box 3, a spindle shaft 4 (feed screw), a slider 5, a base frame 6, a wire 7, and a wire guide 8. It is equipped with.

  The motor 2 can rotate in one axial direction and the other in the axial direction. The output shaft 21 of the motor 2 is connected to the gear box 3. The motor 2 is a DC motor, for example.

  The gear box 3 connects the output shaft 21 of the motor 2 and the spindle shaft 4 to transmit the output of the motor 2 to the spindle shaft 4. The gear box 3 includes a motor gear 31, an idle gear 32, a shaft gear 33, a retainer 34, and a gear cover 35.

  The motor gear 31 is attached so as to be rotatable integrally with the output shaft 21 of the motor 2. The shaft gear 33 is attached to the spindle shaft 4 so as to be integrally rotatable. The motor gear 31 and the shaft gear 33 are connected via an idle gear 32. The motor gear 31, the idle gear 32, and the shaft gear 33 are installed on the retainer 34 and covered with a gear cover 35.

  The spindle shaft 4 rotates to one side and the other side in the axial direction by the driving force of the motor 2 transmitted via the gear box 3. The spindle shaft 4 is formed in a rod shape made of steel or the like, and a male screw 41 is formed on the outer periphery of the spindle shaft 4 along its longitudinal direction. The male screw 41 is, for example, a trapezoidal screw.

  Further, an end 42 on the x-positive direction side of the spindle shaft 4 is fixed to the shaft gear 33 of the gear box 3, whereby the spindle shaft 4 is rotated by the motor 2. Further, the spindle shaft 4 is inserted into the nut 51 of the slider 5 and disposed in the base frame 6, and an end portion 43 on the x negative direction side of the spindle shaft 4 is formed in a wire guide 8 described later. The shaft support hole 85 is pivotally supported.

  The slider 5 includes a nut 51 formed in a rectangular shape and a nut guide 52 attached to the outside of the nut 51. The outer shape of the slider 5 is formed in a shape corresponding to the shape inside the base frame 6, whereby the nut 51 can move along the rail 61 of the base frame 6.

  The nut 51 has two insertion holes 53 and 54 arranged along the z direction. The spindle shaft 4 is inserted through the upper insertion hole 53. On the inner peripheral surface of the insertion hole 53, a female screw 55 is formed which is screwed with the male screw 41 formed on the outer peripheral surface of the spindle shaft 4. With this, the spindle shaft 4 rotates, whereby the slider 5. Is moved along the axial direction of the spindle shaft 4 and the extending direction of the rail 61.

  A wire end 71 attached to one end of the wire 7 is inserted through the lower insertion hole 54. The wire end 71 is inserted into the insertion hole 54 from the x negative direction side, and is fixed to the nut 51 by a nut cap 56 that is fitted into the insertion hole 54 from the x positive direction side.

  The nut guide 52 is formed so as to cover the bottom surface of the nut 51 and the lower portion of the side surface. The nut guide 52 includes a bottom plate 52A and a pair of side plates 52B, and the pair of side plates 52B is provided with a substantially oval opening 57. A projection 58 provided on the side surface of the nut 51 is fitted into the opening 57 so that the nut 51 and the nut guide 52 are integrally connected. A convex portion 59 is erected along the periphery of the opening 57. Similar to the opening 57, the convex portion 59 is formed in a substantially oval shape having the major axis in the x direction. When the convex portion 59 is fitted to the rail 61 of the base frame 6 so as to be slidable in the x direction, the slider 5 can be moved.

  The nut 51 of the slider 5 is made of, for example, a metal material. Further, the nut guide 52 of the slider 5 is made of, for example, a resin material. Thereby, it can avoid that metals contact in the sliding part of the slider 5 and the base frame 6, and can suppress wear of both components.

  The base frame 6 is formed so as to cover the slider 5 and the spindle shaft 4. The base frame 6 includes an upper plate 6A and a pair of side plates 6B. The base frame 6 is formed by, for example, pressing a steel plate material. A rail 61 extending in the x direction is provided on the side plate 6B. The rail 61 guides the slider 5 in the x direction by fitting the convex portion 59 of the slider 5 to the rail 61.

  A housing 62 is attached to the end of the base frame 6 on the x positive direction side. A bearing 63 is installed in the housing 62, and a bearing retainer 64 is attached from the x positive direction side, so that the bearing 63 is built in the housing 62. The gear box 3 is connected to the bearing retainer 64. As a result, the end of the spindle shaft 4 on the x positive direction side can be connected to the shaft gear 33 inside the gear box 3 through the bearing 63. On the other hand, the housing 81 of the wire guide 8 is attached to the end of the base frame 6 on the x negative direction side.

  The wire guide 8 is inserted through the wire 7 and held curved so that both ends of the wire 7 are directed in different directions. The wire guide 8 is formed in a block shape that is substantially fan-shaped when viewed from the side (viewed in the y direction). The wire guide 8 includes a housing 81, a base plate 82, and a guide pipe 83.

  The guide pipe 83 is a tubular member that is curved so as to be fitted into the guide groove 84 inside the housing 81. The wire 7 is inserted into the guide pipe 83. When the guide pipe 83 is fitted in the guide groove 84 of the housing 81 and is sandwiched by the base plate 82, the wire 7 is inserted into the wire guide 8 along the guide groove 84.

  The shaft support hole 85 described above is formed at the end of the wire guide 8 in the positive x direction of the housing 81 and at a position above the guide groove 84. A bearing 86 is installed in the shaft support hole 85, and a bearing retainer 87 is further attached, so that the bearing 86 is built in the housing 81. As a result, the end portion 43 on the x negative direction side of the spindle shaft 4 is inserted into the bearing 86 and supported by the shaft support hole 85 as described above.

  One end of the wire 7 is fixed to the slider 5 via a wire end 71 and the other end is fixed to the buckle 10 via a ferrule 72. As described above, the wire 7 is held by the wire guide 8 so that the extending directions of both ends are different. Hereinafter, one end side connected to the slider 5 via the wire end 71 is referred to as “wire 7A”, and the other end side connected to the buckle 10 via the ferrule 72 is referred to as “wire 7B”.

  In particular, in the first embodiment, as shown in FIG. 3, the center axis of the wire 7 </ b> A (hereinafter also referred to as “wire axis”), the axis of the spindle shaft 4 (hereinafter also referred to as “screw axis”), and the output of the motor 2. The shaft 21 is a separate shaft and is arranged in parallel. In other words, the wire shaft of the wire 7A, the screw shaft of the spindle shaft 4, and the output shaft 21 of the motor 2 are arranged on a vertical plane. In the first embodiment, the extending directions of the wire shaft, the screw shaft, and the output shaft 21 are all in the x direction (vehicle longitudinal direction). Thereby, the dimension of the y direction of the whole apparatus of the buckle lifter 1 can be thinned.

  The spindle shaft 4 and the wire 7A are attached to the slider 5 in parallel along the z direction as shown in FIG. Thereby, the movement range of the slider 5 in the x direction can overlap the movement range of the end position of the wire 7A in the x direction. Thereby, the dimension of the x direction of the whole apparatus of the buckle lifter 1 can be shortened. As described above, the buckle lifter 1 according to the first embodiment can realize shortening in both the x-direction and the y-direction, thereby further saving space.

  Further, in the buckle lifter 1 of the present embodiment, as described above, the spindle shaft 4 and the wire 7A are attached to the slider 5 in parallel along the z direction, so that the wire 7 with respect to the dimension in the x direction of the apparatus can be obtained. Can be increased. In other words, the size of the device in the x direction can be shortened while allowing the wire 7 to extend sufficiently long to raise and lower the buckle 10 between the storage position A and the mounting position B.

  Further, in the present embodiment, the wire 7A is disposed below the spindle shaft 4 (z negative direction side). As a result, the radius of the curved portion of the wire 7 in the wire guide 8 can be increased, and the resistance received from the curved portion when the wire 7A is pushed out by the slider 5 can be reduced, so that the wire 7 can be sent out more smoothly and the buckle can be fed. 10 can be easily moved from the storage position A to the mounting position B.

  Moreover, the buckle 10 is arrange | positioned so that it may incline in the perpendicular | vertical or passenger | crew side. That is, the buckle 10 is arrange | positioned so that it may become 90 degrees or less with respect to a seat surface. In particular, the main surface of the buckle 10 is preferably arranged so as to be parallel to a vertical plane on which the wire shaft, the screw shaft, and the output shaft 21 are arranged.

  The operation of the buckle lifter 1 will be described with reference to FIGS. The buckle lifter 1 positions the buckle 10 at the storage position A as shown in FIG. At this time, the slider 5 is located at the end on the x positive direction side in the movable range in the x direction.

  For example, when it is detected that the passenger is seated on the seat, the motor 2 rotates the spindle shaft 4. As the spindle shaft 4 rotates, the slider 5 moves along the rail 61 in the x negative direction. Along with this, the wire 7A connected to the slider 5 is also pushed to the x negative direction side, whereby the buckle 10 connected to the wire 7B moves toward the upper side of the seat.

  Finally, as shown in FIG. 4, the slider 5 moves to the end portion on the x negative direction side of the movable range in the x direction, and the buckle 10 rises to the mounting position B. Thus, the occupant can easily engage the tongue with the buckle 10, and the occupant can easily wear the webbing.

  5-7 is a schematic diagram showing a configuration of a modified example in which the arrangement of the motor 2 is changed in the buckle lifter 1 of the first embodiment.

  1 to 4 exemplify a configuration in which the motor 2 is disposed above the spindle shaft 4 and the wire 7A. However, the present invention is not limited to this as long as each axis is disposed on the same vertical plane. For example, as shown in FIG. 5, the motor 2 may be arranged below the spindle shaft 4 and the wire 7A.

  Further, as shown in FIG. 6, the arrangement of the spindle shaft 4 in the x direction may be opposite, and the gear box 3 may be arranged on the x negative direction side of the base frame 6.

  1 to 4, the output shaft 21 of the motor 2 is arranged in parallel with the spindle shaft 4 and the wire 7A in the z direction, and at least a part of these three shafts when viewed from the z direction. The configuration in which they are arranged to be overlapped is illustrated, but it is sufficient that at least two axes of the spindle shaft 4 and the wire 7A satisfy this relationship, and the arrangement of the output shaft 21 of the motor 2 may be other than the above. For example, as shown in FIG. 7, the motor 2 may be arranged on the positive x side of the spindle shaft 4 and the wire 7A. At this time, the position of the motor 2 in the z direction may be the same as that of the base frame 6 or may be a position above or below the base frame 6 as indicated by a dotted line in FIG.

[Second Embodiment]
A second embodiment will be described with reference to FIGS. FIG. 8 is a diagram schematically showing a positional relationship between each axis of the buckle lifter 1A according to the second embodiment and the buckle 10. As shown in FIG. FIG. 8A is a plan view seen from the upper side (z positive direction side), and FIG. 8B is a front view seen from the vehicle front side (x positive direction side).

  As shown in FIG. 8, the buckle lifter 1A of the second embodiment has a wire shaft of the wire 7A, a screw shaft of the spindle shaft 4, and an output shaft 21 of the motor 2 arranged on a horizontal plane, The wire shaft, the screw shaft, and the output shaft 21 are different from the buckle lifter 1 of the first embodiment in that the wire shaft, the screw shaft, and the output shaft 21 are arranged on the seat side from the buckle 10. In the second embodiment, the extending directions of the wire shaft, the screw shaft, and the output shaft 21 are all in the y direction (vehicle width direction). The buckle lifter 1A of the second embodiment is disposed, for example, below the seat.

  In the buckle lifter 1A of the second embodiment, the wire shaft of the wire 7A, the screw shaft of the spindle shaft 4, and the output shaft 21 of the motor 2 are arranged on the same plane. The spindle shaft 4 and the wire 7A are attached to the slider 5 in parallel along the x direction as shown in FIG. With these configurations, the buckle lifter 1A according to the second embodiment can also realize shortening in the y direction and the z direction, so that further space saving can be achieved as in the first embodiment.

  FIGS. 9-11 is a schematic diagram which shows the structure of the modification which changed arrangement | positioning of the motor 2 in the buckle lifter 1A of 2nd Embodiment.

  FIG. 8 illustrates the configuration in which the motor 2 is disposed in front of the vehicle with respect to the spindle shaft 4 and the wire 7A. However, the present invention is not limited to this as long as the respective axes are disposed on the same horizontal plane. For example, as shown in FIG. 9, the motor 2 may be arranged on the vehicle rear side from the spindle shaft 4 and the wire 7A.

  In addition, as shown in FIG. 10, the arrangement of the spindle shaft 4 in the y direction may be opposite, and the gear box 3 may be arranged on the y direction side of the base frame 6.

  Further, in FIG. 8, the output shaft 21 of the motor 2 is arranged in parallel with the spindle shaft 4 and the wire 7A in the x direction, and at least a part of these three shafts overlaps when viewed from the x direction. However, it is sufficient that at least two axes of the spindle shaft 4 and the wire 7A satisfy this relationship, and the arrangement of the output shaft 21 of the motor 2 may be other than the above. For example, as shown in FIG. 11, the motor 2 may be arranged on the y negative direction side of the spindle shaft 4 and the wire 7A. At this time, the position of the motor 2 in the x direction may be the same as that of the base frame 6 or may be a position on the vehicle front side or vehicle rear side of the base frame 6 as indicated by a dotted line in FIG.

[Third Embodiment]
A third embodiment will be described with reference to FIGS. FIG. 12 is a diagram schematically showing a positional relationship between each shaft of the buckle lifter 1B and the buckle 10 according to the third embodiment. 12A is a plan view seen from the upper side (z positive direction side), and FIG. 12B is a side view seen from the vehicle width direction (y negative direction side).

  As shown in FIG. 12, the buckle lifter 1B of the third embodiment is such that the wire shaft of the wire 7A, the screw shaft of the spindle shaft 4, and the output shaft 21 of the motor 2 are arranged on a horizontal plane. The wire shaft, the screw shaft, and the output shaft 21 are different from the buckle lifter 1 of the first embodiment in that the wire shaft, the screw shaft, and the output shaft 21 are arranged on the vehicle rear side (x negative direction side) from the buckle 10. In the third embodiment, the extending directions of the wire shaft, the screw shaft, and the output shaft 21 are all in the x direction (vehicle longitudinal direction). The buckle lifter 1B of the third embodiment is disposed, for example, behind the seat. It is particularly preferable to apply to a rear seat having a space behind the seat.

  In the buckle lifter 1B of the third embodiment, the wire shaft of the wire 7A, the screw shaft of the spindle shaft 4, and the output shaft 21 of the motor 2 are arranged on the same plane. Moreover, the spindle shaft 4 and the wire 7A are attached to the slider 5 in parallel along the y direction as shown in FIG. With these configurations, the buckle lifter 1B of the third embodiment can also shorten the x-direction and the z-direction, so that further space saving can be achieved as in the first embodiment.

  FIGS. 13-15 is a schematic diagram which shows the structure of the modification which changed arrangement | positioning of the motor 2 in the buckle lifter 1B of 3rd Embodiment.

  FIG. 12 illustrates a configuration in which the motor 2 is disposed on the y negative direction side in the vehicle width direction from the spindle shaft 4 and the wire 7A. However, if the respective axes are disposed on the same horizontal plane, Not limited. For example, as shown in FIG. 13, the motor 2 may be arranged on the y-positive direction side with respect to the spindle shaft 4 and the wire 7A.

  Further, as shown in FIG. 14, the arrangement of the spindle shaft 4 in the x direction may be reversed, and the gear box 3 may be arranged on the x direction side of the base frame 6.

  In FIG. 12, the output shaft 21 of the motor 2 is arranged in parallel with the spindle shaft 4 and the wire 7A in the y direction, and at least a part of these three shafts overlaps when viewed from the y direction. However, it is sufficient that at least two axes of the spindle shaft 4 and the wire 7A satisfy this relationship, and the arrangement of the output shaft 21 of the motor 2 may be other than the above. For example, as shown in FIG. 15, the motor 2 may be disposed on the x negative direction side of the spindle shaft 4 and the wire 7A. At this time, the position of the motor 2 in the y direction may be the same as that of the base frame 6 or may be a position on the y positive direction side or the y negative direction side of the base frame 6 as indicated by a dotted line in FIG.

  12 to 15 exemplify a configuration in which the screw shaft, the wire shaft, and the output shaft 21 are arranged on the vehicle rear side (x negative direction side) from the buckle 10. It may be arranged on the x positive direction side).

  The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Those in which those skilled in the art appropriately modify the design of these specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the specific examples described above and their arrangement, conditions, shape, and the like are not limited to those illustrated, and can be changed as appropriate. Each element included in each of the specific examples described above can be appropriately combined as long as no technical contradiction occurs.

1, 1A, 1B Buckle lifter 2 Motor 4 Spindle shaft (feed screw)
5 Slider 7 Wire 8 Wire guide 10 Buckle

Claims (9)

With a buckle,
A wire having one end connected to the buckle;
A wire guide for bending the other end of the wire in a direction different from the extending direction of the one end;
A slider connected to the other end of the wire and movable along the extending direction of the other end of the wire;
A feed screw that is rotatably screwed to the slider and moves the slider in one direction by rotation;
A motor for driving the feed screw;
With
The screw shaft of the feed screw and the wire shaft on the other end side of the wire are separate axes and arranged in parallel.
Buckle lifter. The output shaft of the motor is in the same plane as the screw shaft and the wire shaft;
The buckle lifter according to claim 1. The screw shaft, the wire shaft, and the output shaft of the motor are separate shafts and are arranged in parallel.
The buckle lifter according to claim 1 or 2. The screw shaft, the wire shaft, and the output shaft are arranged on a vertical plane.
The buckle lifter according to claim 3. The buckle is arranged to be vertical or inclined toward the occupant side,
The buckle lifter according to claim 4. The buckle is disposed such that a main surface of the buckle is parallel to the vertical plane.
The buckle lifter according to claim 5. The screw shaft, the wire shaft, and the output shaft are arranged on a horizontal plane.
The buckle lifter according to claim 3. The screw shaft, the wire shaft, and the output shaft are disposed closer to the seat than the buckle.
The buckle lifter according to claim 7. The screw shaft, the wire shaft, and the output shaft are arranged on the vehicle rear side or the front side from the buckle.
The buckle lifter according to claim 7.