JP4321178B2 - Vehicle seat device - Google Patents

Description

  The present invention relates to a vehicle seat device, and more particularly, to a seat belt device and a vehicle seat device to which an infant seat is fixed by using an automatic locking retractor function thereof.

  Infant seats equipped with an infant-only restraining device for seating an infant on a vehicle seat are commercially available. The infant seat is used by being fixed to a vehicle seat that is installed in the vehicle in advance. As a fixing method, a dedicated anchor is provided on the vehicle seat side, a dedicated lock is provided on the infant seat side, and they are engaged with each other, and fixed using the seat belt device of the vehicle. Two types are well known. The former is defined by a standard called ISO-FIX. In recent years, vehicles equipped with many infant seats and vehicle seats conforming to the standard have been marketed, while the latter are still The current situation is that many are in circulation.

  When the seat belt device is used for attachment as in the latter case, it is necessary to regulate the feeding of the webbing, and as a function therefor, an automatic lock type retractor function (hereinafter referred to as an ALR function) is provided. The ALR function is to allow only the drawing of the webbing after the webbing has been pulled out to the maximum and prevent the webbing from being fed out. When attaching an infant seat using the ALR function, after the webbing is attached to the infant seat in a predetermined state, the webbing is pulled out to the maximum and the infant seat is pressed against the vehicle seat by the webbing. The operation of causing the retractor to wind up is performed.

  On the other hand, recently, many vehicles having three seat rows are commercially available. Among these vehicles, many seats, in particular, the second row seats are divided into left and right parts so that they can be moved independently in the vehicle front-rear direction to improve convenience. Such a second-row seat contributes to the improvement of boarding / exiting performance by being moved so as not to hinder boarding / exiting through the passenger's door opening. Further, depending on the positional relationship between the door opening and the seat, not only the second row seat but also other seats may be moved in order to improve boarding / exiting performance.

  In such a case where the seat is movable, when the infant seat is attached to the seat using the ALR function, there is a problem that the movement of the seat is restricted after the attachment. Specifically, when the ALR function is operating, webbing is only allowed to be pulled in and the feeding is restricted, so the sheet cannot move in the webbing feeding direction, and once in the webbing pulling direction. If the seat is moved, the infant seat must be removed to release the ALR function in order to return the seat to its original position.

  In order to cope with the above problem, it is conceivable to provide a lock on the infant seat and an anchor that can engage the infant seat lock on the side of the seat, as described in Patent Document 1 below. . That is, by adopting an attachment method that does not use a seat belt device like the above-mentioned ISO-FIX, it is possible to move the second row of seats while the infant seat is attached to the seat.

JP 2000-198378 A

  However, when a user who already has an infant seat that is fixed using the ALR function, purchases a vehicle with a seat row including the above seats or uses it as a rental car. Inevitably, the movement of the seat in the longitudinal direction is sacrificed. In the first place, the above-mentioned Patent Document 1 is based on an infant seat that can be attached without using a seat belt device, and the seat can be moved while the infant seat is attached using the ALR function of the seat belt device. The above-mentioned problem is not suggested or disclosed in Patent Document 1.

  The present invention has been made in view of the above problems, and the object of the present invention is to allow the infant seat to be moved using the seat belt device and the ALR function thereof, so that the passenger can get on and off. An object of the present invention is to provide a vehicle seat device that improves the above.

In order to achieve the above object, the present invention has the following configuration. That is, the first configuration of the present invention is a vehicle that is provided in the vicinity of the entrance for getting on and off in the vehicle interior of the vehicle, and that is divided in the vehicle width direction and independently movable in the vehicle longitudinal direction. use and sheet provided, and c Ebingu for restraining an occupant seated on the seat for the vehicle is provided on the body of the vehicle, urges one end of the upper Symbol webbing winding direction, the tension of the webbing A retractor that allows the webbing to be extended, a shoulder anchor that is provided on a side surface of the vehicle body spaced apart from a side portion of the vehicle seat and guides the webbing extended from the retractor, and the vehicle seat. provided, and an anchor to secure the other end of the webbing, the regulate the feeding of the webbing to the seat above the vehicle infant seat A feeding restricting means for enabling Paste, provided three-point seat belt apparatus provided with a by occupant in a state in which the feed regulating means is acting upon for the vehicle seat is moved, the webbing It has a maintenance means for maintaining the feeding length from the retractor constant.

According to the above configuration, even when the infant seat is attached to the vehicle seat using the delivery restriction means, the webbing extension length of the seat belt device is required when the occupant moves the vehicle seat. Is kept constant. Accordingly, since the webbing is prevented from being wound around the retractor as the vehicle seat moves, the vehicle seat can be moved without any inconvenience while the infant seat is attached to the vehicle seat using the feeding restricting means. The passenger can easily get on and off through the opening for getting on and off in the vicinity of the vehicle seat. Moreover, after boarding / alighting is completed, the vehicle seat can be returned to the original position as it is. It is possible to realize a configuration in which the vehicle seat is moved while the infant seat is attached, using the shoulder anchor normally provided in the three-point seat belt device as it is.

  According to a second configuration of the present invention, the divided vehicle seats can be separated from each other, an infant seat can be attached to the divided vehicle seats, and the maintaining means includes the divided vehicle seats. With the vehicle seats separated from each other, the length of the webbing from the retractor is kept constant by displacing the vehicle seat to which the infant seat is attached as the vehicle seat moves backward. It is characterized by maintaining the above.

  According to said structure, when the division | segmentation part of a vehicle seat moves back, the extending | stretching length of webbing is maintained constant with the state between the division | segmentation parts spaced apart. Therefore, when moving the vehicle seat backward when the passenger gets on and off, the passenger can pass between the divided portions, and the passenger's getting on and off the seat arranged behind the vehicle seat is improved. I can do it.

  According to a third configuration of the present invention, the maintaining means displaces the vehicle seat to which the infant seat is attached inward and downward in the vehicle width direction as the vehicle seat moves rearward. The feeding length of the webbing from the retractor is kept constant.

  According to the above configuration, when the vehicle seat moves rearward, the vehicle seat is displaced inward and downward in the vehicle width direction. Accordingly, when the vehicle seat is moved rearward when an occupant gets on and off, the distance from the opening for getting on and off in the vicinity of the vehicle seat is widened, and between the upper edge of the opening for getting on and the vehicle seat is increased. The space in the up and down direction of the occupant is also widened, so that passengers can get on and off more easily.

  According to a fourth configuration of the present invention, the maintaining means moves the vehicle seat to which the infant seat is attached rearward, and the front portion of the vehicle seat is separated from the entrance for getting on and off. By rotating the webbing in the same manner, the feeding length of the webbing from the retractor is kept constant.

  According to said structure, when a vehicle seat moves back, the front part of a vehicle seat leaves | separates from the opening part for boarding / alighting. Therefore, when the occupant gets on and off, when the vehicle seat is moved backward, the vehicle seat is easily accessible through the passenger opening.

  According to a fifth configuration of the present invention, the maintaining means is configured to cause the vehicle seat to rotate independently of the front-rear movement of the vehicle seat. The vehicle seat is configured to rotate so as to maintain a constant feeding length of the webbing from the retractor when the webbing is at a predetermined longitudinal position.

  According to the above configuration, the vehicle seat is independently moved in the front-rear direction and rotated while maintaining the webbing extension length. Therefore, while improving the convenience of the vehicle seat by moving the vehicle seat in the front-rear direction, the vehicle seat can be moved without being restricted by the seat belt device, so that the passenger can get on and off.

  The sixth configuration of the present invention is characterized in that the maintaining means has a display means that enables the position of the vehicle seat to be visually recognized.

  According to said structure, since a passenger | crew can visually recognize the position which can rotate a vehicle seat, the operation | work which rotates a vehicle seat for a boarding / exiting improvement can be performed easily.

  According to a seventh configuration of the present invention, the maintaining means has shift range detecting means for detecting a shift range of the transmission of the vehicle, and the transmission is in a parking range by the shift stage range detecting means. The vehicle seat is configured to allow rotation of the vehicle seat when detected.

  According to the above configuration, the vehicle seat is allowed to rotate only when the shift range of the vehicle is in the parking range. Therefore, since rotation is allowed only when the vehicle is stopped, the vehicle seat can be rotated more safely.

  According to an eighth aspect of the present invention, the vehicle seat further includes prohibiting means for prohibiting the change of the shift range of the transmission from the parking range when the vehicle seat is rotated.

  According to the above configuration, the shift range of the transmission is prohibited from being changed from the parking range when the vehicle seat is rotated. That is, the vehicle is prevented from traveling while the vehicle seat is rotated, and the occupant is seated on the vehicle seat in an oblique state with respect to the vehicle traveling direction, or the infant is in such an oblique state. The vehicle does not travel while being seated on the infant seat attached to the vehicle seat. Therefore, an occupant or an infant can be reliably protected in the event of a vehicle collision.

  A ninth configuration of the present invention is characterized in that the maintaining means is configured to fix the webbing so as to prevent the webbing from being caught in the retractor.

  According to the above configuration, even when the infant seat is attached to the vehicle seat using the feeding restriction means, when the vehicle seat moves, the webbing of the seat belt device is fixed and the retractor is The feeding length of the is surely kept constant. Therefore, even if the feeding restricting means is operated, the webbing feeding length is reliably prevented from being shortened, and the vehicle seat can be reliably moved while the infant seat is still attached.

  According to a tenth aspect of the present invention, the three-point seat belt device has a guide for guiding the webbing to the vehicle seat side, and the maintaining means moves the webbing according to the movement of the vehicle seat. The guide is moved so as to keep the feeding length from the retractor constant.

According to said structure, a maintenance means moves the guide which guides webbing to the vehicle seat side so that the feeding length from the retractor of webbing may be kept constant according to the movement of a vehicle seat. Therefore, the vehicle seat can be moved without any inconvenience while the infant seat is attached. In addition, the configuration of the vehicle seat and the configuration of the retractor and the anchor in the three-point seat belt device can be made to move the vehicle seat with the infant seat attached while using the conventional one. I can do it .

First one configuration of the present invention, the guide is characterized in that it is configured to seat integral for the vehicle.

  According to the above configuration, since the guide is configured integrally with the vehicle seat, when assembling the vehicle, the operation of providing the guide on the vehicle can be performed integrally with the vehicle seat, and the mounting workability is improved. I can do it.

The first and second configurations of the present invention, the guide is characterized in that it is formed integrally with the assist grip provided on the vehicle body at the side of the seat above the vehicle.

  According to the above configuration, since the guide is configured integrally with the assist grip, when assembling the vehicle, the work of providing the guide on the vehicle can be performed integrally with the assist grip, and the mounting workability can be improved. I can do it.

  ADVANTAGE OF THE INVENTION According to this invention, the seat apparatus for vehicles which can be moved also in the state which fixed the infant seat using the seatbelt apparatus and its ALR function, and a passenger | crew's boarding / alighting property can be provided can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described. First, a configuration common to the present embodiment will be described with reference to FIG.

  FIG. 1 is a schematic side view of a vehicle V to which an infant seat Cs mounting structure according to the present invention is applied. As shown in the figure, the vehicle is provided with three rows of seats in the front-rear direction in the passenger compartment, and a second row seat 2 (hereinafter referred to as a seat) is configured to be slidable at least in the vehicle front-rear direction by a known slide mechanism. Thus, when sliding backward, it is possible to easily get on and off passengers from the opening 10 for getting on and off.

  The seat 2 is divided into two in the vehicle width direction, and each can slide independently in the vehicle longitudinal direction. FIG. 1 shows only one side thereof. Further, the respective divided portions of the seat 2 are provided so as to be spaced apart in the vehicle width direction, and are configured so as to enable a so-called walk-through in which an occupant can pass between the respective divided portions. The seat 2 is equipped with a three-point seat belt device 3 (hereinafter referred to as a seat belt device) that restrains an occupant seated on the seat 2. The seat belt device 3 is equipped with an automatic locking retractor function (hereinafter referred to as ALR function), and an infant seat Cs is attached to the seat 2 using the seat belt device 3 (note that The child seat Cs is not shown in the drawings after FIG. 2).

  The ALR function is to allow only the drawing of the webbing after the webbing has been pulled out to the maximum and prevent the webbing from being fed out. When attaching an infant seat using the ALR function, after the webbing is attached to the infant seat in a predetermined state, the webbing is pulled out to the maximum and the infant seat is pressed against the vehicle seat by the webbing. The operation of causing the retractor to wind up is performed. Since the configuration for realizing the ALR function is well known, detailed description thereof is omitted. In the present embodiment, when the seat 2 is moved rearward to facilitate getting on and off the passenger through the opening 10 for getting on and off, the webbing of the seat belt device is loosened. However, the webbing is not taken up by the retractor even if the webbing becomes slack.

  Subsequently, each embodiment of the present invention will be described. Since each embodiment has the above-described configuration in common, the following description will be focused on the configuration specific to each embodiment. First, a first embodiment of the present invention will be described with reference to FIGS.

  When the seat 2 moves in the front-rear direction, the seat 2 is supported by the vehicle body so as to also move in the up-down direction. That is, as shown in FIG. 2, which is a schematic side view of the seat 2 supporting portion, a guide rail 4 that extends obliquely upward from the floor F is provided on the floor F of the vehicle body, and the seat 2 extends along the guide rail 4. It is supported so that it can move.

  Specifically, as shown in FIG. 3, which is a schematic front view of the seat 2, its support structure, and the seat belt device 3, a guide rail 4 that rises upward is provided on the floor F of the vehicle body on the bottom surface of the seat 2. A bracket 29 slidably fitted to the guide rail 4 is provided, and a fixing mechanism 40 is provided between the guide rail 4 and the bracket 29. Further, a retractor 30, a webbing 31, and a shoulder anchor 32 for guiding the webbing 31 constituting the seat belt device 3 are provided on the side of the seat 2 in the vehicle body, and the webbing 31 is provided on the side of the retractor 30 on the side of the seat 2. An anchor 39 for fixing the end of the seat 2 is fixed to a side opposite to the anchor 39 on the side of the seat 2, and a buckle 33 slidably provided on a webbing 31 is engageable with a buckle 33. .

  The movement locus of the seat 2 by the guide rail 4 will be described again with reference to FIG. The guide rail 4 is formed in an arc shape in a side view. That is, when the seat 2 moves while being guided by the guide rail 4, the seat 2 draws an arc-shaped locus in a side view.

  This trajectory is set to satisfy the following relationship. That is, when an infant seat (not shown) is fixed to the seat 2 using the seat belt device 3, the length from the shoulder anchor portion A to the buckle portion B of the webbing 31 is kept constant by the movement of the seat 2. It is made to lean. In other words, when the seat 2 moves rearward horizontally, the distance from the shoulder anchor 32 to the buckle 33 is reduced, and the webbing 31 is wound around the retractor 30 and the ALR function is activated. In this case, it is impossible to return the seat 2 to the front again. However, according to the present embodiment, the webbing 31 is configured so that the seat 2 moves backward while drawing the trajectory as described above. The sheet 2 can be moved without being wound around the retractor 30.

  Further, according to the first embodiment, since the movement of the seat 2 is performed backward and downward, the movement of the seat 2 is performed even if the seat 2 is divided into left and right so as to form a so-called walk-through. Sometimes the walk-through state is maintained, and it is possible to contribute to the improvement of the passengers seated on the rear seat.

  As a modification of the first embodiment, the guide rail 4 can be configured such that the seat 2 moves downward and toward the vehicle interior when the seat 2 moves backward. In this case, the movement trajectory of the seat 2 has a shape as a part of a spherical surface with the shoulder anchor 32 as the center. In this case as well, the shoulder anchor in the webbing 31 is moved by the movement of the seat 2 as in the first embodiment. The length from the part to the buckle part should be kept constant. With this configuration, when the seat 2 is moved, the seat 2 moves in the vehicle interior and downward, so that the distance between the seat 2 and the entrance opening 10 and the upper edge of the entrance opening 10 are increased. The space in the vertical direction between the seat and the seat 2 is widened, and passengers can easily get on and off.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  The seat 2 is configured to be movable in the front-rear direction, and is rotatable at a predetermined position in the front-rear direction so that the front portion of the seat 2 is separated from the passenger opening 10. That is, as shown in FIG. 4 which is a schematic perspective view of a support portion of the sheet 2 according to the present embodiment, the sheet 2 is divided into a rotary sliding portion 50 for sliding the sheet 2 to rotate, and a rotary sliding portion 50. It is supported via the supported longitudinal sliding portion 51.

  The configuration of the rotary sliding portion 50 will be described with reference to FIG. 5, which is a schematic top view of the seat 2 and the seat belt device 3.

  When the seat 2 is at a predetermined position in the vehicle front-rear direction, as shown in FIG. 5, the front portion is separated from a passenger opening (not shown in FIG. 5) located on the left side toward the front of the seat 2. (The state before rotation is indicated by a solid line, and the state after rotation is indicated by a broken line). That is, an arcuate guide rail 501 is provided on the floor of the vehicle body, and a slider 502 is provided on the guide rail 501 (in FIG. 5, one of four pairs of guide rail and slider is provided. Only sign). The slider 502 supports the front-rear direction sliding portion 51 and the seat 2, and the seat 2 is movable in an arc shape by sliding the slider 502 along the guide rail 501. By this arcuate movement, when the tongue 34 of the seat belt device 3 is attached to the buckle 33, the feeding length of the webbing 31 (substantially the distance from the shoulder anchor portion A to the buckle portion B) is constant. Maintained. Accordingly, even when the ALR function of the seat belt device 3 is activated, the seat 2 can be moved without any inconvenience. Further, a display means 59 drawn as a mark for displaying that the seat 2 is in a rotatable position in the vehicle front-rear direction (that is, a position where the seat 2 can be rotated so as to keep the webbing feed length constant) is provided in the front-rear direction. Provided on the sliding portion 51. When the occupant rotates the seat 2, the occupant confirms the position of the seat 2 with the display means 59. Therefore, the operation of rotating the seat 2 by the occupant can be easily performed. This display may be a physical display such as a mark drawn on the front / rear direction sliding portion 51 as in this embodiment, or it is lit by a sensor for detecting the front / rear direction position of the seat 2 and a signal from the sensor. It may be performed by providing a separate indicator.

  In the present embodiment, the rotational movement of the seat 2 is further restricted by the shift range of the automatic transmission. Such a configuration will be described with reference to FIGS. 6A and 6B showing one of the guide rails 501. FIG. 6A is a schematic top view of the guide rail 501, and FIG. 6B is a schematic side view of FIG. 6A viewed from the direction of arrow C, and shows a lock mechanism 52 described later.

  As shown in FIG. 6A, sensors 53 that detect the position of the slider 502 are provided at both ends of the guide rail 501. They are electrically connected to the selection mechanism 6 of the automatic transmission. On the other hand, the selection mechanism 6 of the automatic transmission is equipped with a so-called interlock mechanism, and when it is detected that the slider 502 is in a position corresponding to the case where the seat 2 is oriented in the vehicle longitudinal direction. Only allow range change from parking range. That is, when the seat 2 is in the rotational position, range change from the parking range is prohibited.

  Further, a lock mechanism 52 is provided for locking the slider 502 when the slider 502 is at a position corresponding to the vehicle front-rear direction. As shown in FIG. 6B, the lock mechanism 52 is provided in at least one of the guide rails 501, a pin 521 provided at the front end of the guide rail 501 and connected to the select mechanism 6, It is comprised from the to-be-engaged part 522 provided in the slider 502 so that engagement to 521 is possible. The pin 521 is interlocked with the selection mechanism 6, and only when the parking range is selected in the selection mechanism 6, the pin 521 is pulled out and separated from the engaged portion 522, and the rotational movement of the seat 2 is allowed. It is made to do.

  Accordingly, since the range change from the parking range is prohibited when the seat 2 is in the rotated position, an occupant is seated on the seat 2 in the rotated position or the infant seat on the infant seat on the seat 2 in the rotated position. The vehicle is prevented from traveling in a state where the vehicle is seated. Further, since the rotation of the seat 2 is allowed only when the select mechanism 6 is in the parking range, the seat 2 is prevented from rotating during traveling of the vehicle. That is, it is preferable in terms of safety.

  Next, a third embodiment of the present invention will be described with reference to FIGS. 7 (a) to (c). FIG. 7A is a schematic perspective view showing a state in which the tongue 34 of the seat belt device 3 is attached to the buckle 33 in this embodiment, and FIG. 7B is an enlarged view of a main part of FIG. 7 (c) is an explanatory view showing the operation of the clamp mechanism 7 described later. FIG. 7A assumes a state in which the infant seat is fixed to the seat 2 using the seat belt device 3, and the illustration of the infant seat is omitted.

  As shown in FIGS. 7 (a) and 7 (b), the side of the seat 2 on the side of the retractor 30 is provided with an operation portion that can be operated by the occupant at the front portion, and can be rotated about its axial direction A clamp mechanism 7 is provided that includes a supported shaft 71 and a ratchet 73 that is supported by the shaft 71 and through which the webbing 31 is inserted. A spline 72 is formed on the shaft 71, and a ratchet 73 is fitted in the shaft 71 so as to be movable along the direction in which the spline 72 is formed. Although not shown, the ratchet 73 is supported in the vicinity of the retractor 30 in the vehicle body so as to rotate integrally with the shaft 71 by rotation around the axial direction of the shaft 71 and to allow movement along the axial direction of the shaft 71. Yes.

  The clamp mechanism 7 operates as follows by the operation of the operation unit 70. That is, with reference to FIG. 7C, when the operation unit 70 is in a substantially horizontal state, the webbing 31 is not clamped. When the operating unit 70 is operated upward from this state (the movement shown in (1) in FIG. 7C), the ratchet 73 rotates downward with the rotation of the shaft 71, and the webbing 31 is fixed. Thereafter, when the occupant releases the hand from the operation unit 70, the position of the ratchet 73 is fixed, while the operation unit 70 returns to a substantially horizontal state (the movement shown in (2) in FIG. 7C). In this state, when the operation unit 70 is operated downward (the movement shown in (3) in FIG. 7C), the ratchet 73 rotates upward to release the clamp of the webbing 31. When the occupant releases the hand from the operation unit 70, the operation unit 70 returns to a substantially horizontal state again (the movement shown in (4) in FIG. 7C).

  Even when the webbing 31 is clamped as described above, the ratchet 73 and the shaft 71 can move relatively in the direction along the axial direction of the shaft 71. That is, the sheet 2 can be moved in the front-rear direction while maintaining the state where the webbing 31 is regulated by the ratchet 73. Therefore, even if the ALR function of the seat belt device 3 is operating, the seat 2 can be moved freely as long as the webbing 31 is in a direction in which it is slack.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a schematic perspective view showing a state in which the tongue 34 is attached to the buckle 33 in the present embodiment. The infant seat is fixed to the seat 2 using the seat belt device 3, but the illustration thereof is omitted in FIG.

  A guide 35 for guiding the shoulder belt portion of the webbing 31 is provided on the side of the seat 2 on the side of the retractor 30. The guide 35 is provided so as to be rotatable with respect to the seat 2 and is configured to be interlocked with the movement of the seat 2 in the front-rear direction. Specifically, the guide 35 is provided with a slit 351 through which the webbing 31 can be inserted, and interlocks with the movement of the sheet 2 so as to eliminate the slack of the webbing 31 caused by the movement of the sheet 2. That is, even if the ALR function of the seat belt device 3 is activated, the webbing 31 is not slackened by the movement of the seat 2, and therefore the webbing 31 is not wound around the retractor 30, and the webbing 31 is loosened. If so, the sheet 2 can be moved freely.

  Such a configuration can be realized by a structure as shown in FIG. 9 as an example. Specifically, a guide 35 is rotatably supported on the side of the seat 2 and is urged in the direction of arrow D. A spool gear 36 is provided on the seat 2 side of the slide mechanism 20 for the seat 2. On the other hand, a rack gear 37 that meshes with the spool gear 36 is provided on the floor F side, and the spool gear 36 is rotated by the movement of the seat 2. Then, the spool gear 36 and the guide 35 are connected by a wire 38 so that the wire 38 is wound up by the spool gear 36 by the rotation of the spool gear 36. Accordingly, the wire 38 is wound up by the movement of the sheet 2, and as a result, the guide 35 connected to the wire 38 rotates to displace the webbing 31.

  Since such a structure can be configured as a part of the seat assembly, when the seat 2 is mounted on the vehicle in the assembly process of the vehicle V, it can be integrally provided on the vehicle V.

  In the above-described embodiment, the guide 35 is pivotally supported with respect to the seat 2, but the guide 35 may be configured to slide up and down on the side of the seat 2.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a schematic perspective view showing a state where the tongue 34 is attached to the buckle 33. The infant seat is fixed to the seat 2 using the seat belt device 3, but the illustration thereof is omitted in FIG.

  In the present embodiment, the shoulder anchor 32 of the seat belt device 3 is configured to be movable up and down in conjunction with the movement of the seat 2. Specifically, the shoulder anchor 32 is supported above the side portion of the seat 2 via the drive mechanism 80 and is provided with a slit through which the webbing 31 is inserted. The slide mechanism 20 for the seat 2 is provided with detecting means 21 for detecting the position of the seat 2. The drive mechanism 80 and the detection means 21 are electrically connected to the controller 81.

  Therefore, when the sheet 2 is slid, the position of the sheet 2 is detected by the detection means 21, and the controller 81 causes the driving mechanism 80 to detect the slack of the webbing 31 caused by the movement of the sheet 2 according to the detected position. Drive to remove. Specifically, as the shoulder anchor 32 moves up and down, the length of the shoulder belt portion of the webbing 31 is adjusted by the movement of the seat 2, and the webbing 31 is wound around the retractor 30 as the seat 2 moves. Therefore, even if the ALR mechanism of the seat belt device 3 is operating, the seat 2 can be slid without any inconvenience.

  The above configuration does not change the vehicle seat, and does not change the retractor 30, shoulder anchor 32, tongue 34, buckle 33 and the like as the components of the three-point seat belt, and the drive mechanism of the shoulder anchor 32 This can be realized only by adding the position detector 21 and the controller 81 of 80 and the sheet 2.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS. In this embodiment, a shoulder anchor 32 is formed integrally with the assist grip assembly 9 and the assist grip 911 is configured to be movable. 11 is a schematic perspective view of the assist grip assembly 9, that is, the shoulder anchor 32. FIG. 12 is a schematic front view of the seat belt device 3 with the tongue 34 attached to the buckle 33. As shown in FIG. The infant seat is fixed to the seat 2 by using the seat belt device 3, but the illustration thereof is omitted in FIG.

  As shown in FIG. 11, the assist grip assembly 9 includes a base portion 90 provided on the vehicle body, a main body portion provided with a slit 910 through which the webbing 31 is inserted and an assist grip 911 to achieve the function as the shoulder anchor 32. 91 and a drive unit 92 that operates as described below to rotate the main body 91 upward with respect to the base 90. Further, the base portion 90 is attached to the vehicle body via a height adjustment mechanism (not shown in FIG. 11) having a known configuration, and the height adjustment mechanism depends on the position of the seat 2 as will be described later. The height position of the base part 90 is changed. As shown by a broken line in FIG. 11, the webbing 31 passes through the slit 910 from the back surface and is exposed to the front surface, and reaches the anchor 39.

  Although not shown, a lock pin that fits with a lock portion provided on the vehicle body side is formed on the back surface of the main body 91, and the assist grip assembly 9 is strong when the lock portion and the lock pin are fitted. Fixed to the car body.

  As in the fifth embodiment, the slide mechanism 20 for the seat 2 is provided with detection means for detecting the position of the seat 2, and is electrically connected to the drive unit 92, the height adjustment mechanism 93, and the detection means. The controller is provided (detection means and controller are not shown).

  Therefore, when the position of the seat 2 is detected by the detecting means when the movement of the seat 2 is moved, the controller 92 controls the drive portion 92 and the height adjusting mechanism 93 of the assist grip assembly 9, as shown in FIG. The assist grip 911 moves and rotates upward. At that time, since the webbing 31 is inserted through the main body 91 of the assist grip 911, the webbing 31 is lifted upward as the assist grip 911 is rotated upward, and this occurs as the seat 2 moves. The slack of the webbing 31 is removed. Therefore, even if the ALR mechanism of the seat belt device 3 is operating, the seat 2 can be moved without any inconvenience.

  Since the above-described configuration can be configured as a part of the assist grip 911, when the assist grip 911 is attached to the vehicle V in the assembly process of the vehicle V, it can be provided integrally with the vehicle V.

  Although the present invention has been described with reference to the preferred embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention. .

1 is a schematic side view of a vehicle to which an infant seat mounting structure according to the present invention is applied. It is a schematic side view of the sheet | seat support part in 1st Embodiment of this invention. 1 is a schematic front view of a seat, a support structure thereof, and a seat belt device according to a first embodiment of the present invention. It is a schematic side view of the sheet | seat support part in 2nd Embodiment of this invention. It is a schematic perspective view of the sheet | seat support part in 2nd Embodiment of this invention. (A) The schematic top view of a guide rail in 2nd Embodiment of this invention, (b) The schematic side view seen from the direction of arrow C in Fig.6 (a). In the third embodiment of the present invention, (a) a schematic perspective view showing a state in which a tongue of a seat belt device is attached to a buckle, (b) an enlarged view of a main part of FIG. 7 (a), and (c) of a clamp mechanism It is explanatory drawing which shows an action | operation. It is a schematic perspective view which shows the state with which the tongue of the seatbelt apparatus was mounted | worn with the buckle in 4th Embodiment of this invention. It is the schematic which shows the mechanism which rotates a guide according to the movement of a sheet | seat in 4th Embodiment of this invention. It is a schematic perspective view which shows the state with which the tongue of the seatbelt apparatus was mounted | worn with the buckle in 5th Embodiment of this invention. It is a schematic perspective view of the assist grip assembly, ie, a shoulder anchor, in 6th Embodiment of this invention. It is a schematic front view of the state which mounted the tongue of the seatbelt apparatus in the buckle in 6th Embodiment of this invention.

2 Second row seat (vehicle seat)
3 Three-point seat belt device 4 Guide rail (maintenance means)
6 Select mechanism (shift range detection means, prohibition means)
7 Clamp mechanism (maintenance means)
9 Assist grip assembly (guide)
29 Bracket (maintenance means)
30 Retractor
31 Webbing
32 Shoulder anchor (guide)
35 Guide
36 Spool gear (maintenance means)
37 Rack gear (maintenance means)
38 wire (maintenance means)
39 Anka
50 Rotating sliding part (maintenance means)
59 Display means
Cs Infant seat V Vehicle

Claims (12)

A vehicle seat is provided in the vehicle interior of the vehicle in the vicinity of the opening for getting on and off, and is divided in the vehicle width direction and configured to be independently movable in the vehicle longitudinal direction,
And c Ebingu for restraining an occupant seated on the seat for the vehicle,
Provided on the body of the vehicle, urges the upper Symbol winding direction one end of the webbing, the retractor to allow the feeding of the webbing by the tension of the webbing,
A shoulder anchor that is provided on a side surface of the vehicle body apart from a side portion of the vehicle seat and guides the webbing fed from the retractor;
Provided seat above the vehicle, and an anchor to secure the other end of the webbing,
A three-point seat belt device provided with a feeding regulating means that regulates feeding of the webbing and enables attachment of the infant seat to the vehicle seat ;
A vehicle having maintenance means for maintaining a constant feeding length of the webbing from the retractor when the vehicle seat is moved by an occupant in a state where the feeding restriction means is acting. Sheet equipment. The divided vehicle seats can be separated from each other, an infant seat can be attached to the divided vehicle seats, and
The retainer displaces the vehicle seat to which the infant seat is attached in a state where the divided vehicle seats are spaced apart from each other, thereby moving the retractor of the webbing downward. The vehicular seat device according to claim 1, characterized in that a feeding length from the vehicle is kept constant.   The maintaining means displaces the vehicle seat, to which the infant seat is attached, inwardly and downwardly in the vehicle width direction as the vehicle seat moves rearward, thereby extending the webbing from the retractor. The vehicle seat device according to claim 1, wherein the vehicle seat device is maintained constant.   The maintaining means rotates the vehicle seat to which the infant seat is attached so that the front portion of the vehicle seat moves away from the getting-on / off opening as the vehicle seat moves rearward. The vehicle seat device according to claim 1, wherein a feeding length from the retractor is kept constant.   The maintaining means is configured to cause the vehicle seat to rotate independently of the longitudinal movement of the vehicle seat, and when the vehicle seat is at a predetermined longitudinal position. 2. The vehicle seat device according to claim 1, wherein the vehicle seat device is configured to rotate the vehicle seat so as to maintain a constant feeding length of the webbing from the retractor.   The vehicle seat device according to claim 5, wherein the maintaining unit includes a display unit that allows the position of the vehicle seat to be visually recognized.   The maintaining means has a shift range detecting means for detecting a shift range of the transmission of the vehicle, and the vehicle seat is detected when the shift stage range detecting means detects that the transmission is in the parking range. The vehicle seat device according to claim 5, wherein the vehicle seat device is configured to allow rotation of the vehicle.   8. The vehicle seat device according to claim 7, further comprising prohibiting means for prohibiting a change of a shift range of the transmission from a parking range in a state where the vehicle seat is rotated.   The vehicle seat device according to claim 1, wherein the maintaining means is configured to fix the webbing so as to prevent the webbing from being caught in the retractor. The three-point seat belt device has a guide for guiding the webbing to the vehicle seat side,
The said maintenance means is comprised so that the said guide may be moved so that the feeding length of the said webbing from the said retractor may be kept constant according to the movement of the said vehicle seat. Vehicle seat device. The vehicle seat device according to claim 10, wherein the guide is configured integrally with the vehicle seat. The vehicle seat device according to claim 10, wherein the guide is configured integrally with an assist grip provided on the vehicle body at a side portion of the vehicle seat .

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