JP6663730B2 - ISOFIX child seat - Google Patents

Description

  The present invention relates to an ISOFIX standard child seat used for a passenger car or the like.

  A child seat to be used by being attached to an adult seat provided in a passenger car is fixed to the adult seat by appropriate means. As such fixing means, a seat belt provided in a passenger car is used, and ISOFIX standard is known. Documents disclosing the ISOFIX standard include, for example, Japanese Patent No. 4584481 (Patent Document 1) and Japanese Patent No. 4584482 (Patent Document 2). The child seats described in Patent Documents 1 and 2 include a seat body corresponding to a seat body and a base body detachably attached to a bottom of the seat body. The base body includes a base body fixed to the sheet body, and an attachment slidably attached to the base body and capable of being stored or pulled out of the base body. The rear end of the attachment conforms to the ISOFIX standard, and is detachably connected to a pair of anchors provided in the adult seat.

  The base is provided with a mechanism called a first regulating device. The first restricting device restricts the attachment from sliding forward by engaging with the front end of the attachment in a state in which the attachment is fully pulled out to the rear of the child seat. Thereby, the attachment is held at the maximum withdrawal position and is not stored in the base body.

  When attaching the child seat described in Patent Literatures 1 and 2 to an adult seat provided in a passenger car, the seat body and the base body are separated in advance, the attachment is pulled out from the base body to the rear as much as possible, and after the attachment. Insert the end into the adult seat anchor and secure. Next, the sheet member is placed on the base member, and the connecting member of the sheet member is engaged with the connecting member of the base member to fix them. Then, the regulation by the first regulating device is released in conjunction with the connecting member of the base body, and the attachment can be stored in the base body.

Japanese Patent No. 4584481 Japanese Patent No. 4584482

  However, the present inventor has found that there is a point to be further improved in the above-mentioned conventional child seat. In other words, the child seat has a specification in which the seat body and the base body are not separated, and there is a need to directly attach or detach the child seat itself, which constitutes most of the child seat, to or from the anchor of the mating member.

  It is also conceivable that the first regulating means described in the patent document is manually operated in place of the specification linked to the coupling tool. However, manual operation requires the user to operate each time, which is complicated.

  The present invention has been made in view of the above circumstances, and has as its object to provide an ISOFIX standard child seat that can reduce the frequency of user operations.

For this purpose, an ISOFIX child seat according to the present invention comprises a child seat body, a pair of left and right bars mounted on the child seat body so as to be slidable in the front-rear direction and extending rearward from the child seat body. Notch provided at the rear end for receiving an anchor of a mating member, and an anchor lock claw provided at the notch and selectively provided between a closed position for closing the notch and an open position for opening the notch. and coupling bar a member that is provided to be displaceable in the seat body for children, drawn to retracted from the bar to allow the bar sliding in, or from the child seat body to the rear at a predetermined projection length A first lock member that engages with the engaged portion to prohibit sliding of the bar, and a member that is provided displaceably along the bar and has a rear end linked to the anchor lock claw, the first lock member comprising: Department Has a cut-out portion enters, that the anchor lock claw conjunction with cutout portion which is in the closed position is displaced to a position away from the engaged portion is first locking member engages with the engaged portion A first lock release member which prohibits the first lock member from entering the notch portion and engaging the engaged portion when the notch portion is displaced to a position coinciding with the engaged portion.

  According to the present invention, the first lock member is interlocked with the movement of the ISOFIX connecting tool, and the engagement between the first lock member and the bar is automatically released by setting the anchor lock pawl to the closed position. Therefore, the user does not need to perform an extra operation of connecting and fixing the sheet body to the base body as described in Patent Literature 1, and immediately connects and fixes the bar of the ISOFIX child seat to the anchor of the mating member, and immediately releases the child of the ISOFIX child seat. The user can push the seat body rearward to set it in the proper front-rear position. Therefore, the operation frequency of the user can be reduced.

  The member linked to the anchor lock pawl means, for example, a member connected to the anchor lock pawl via a pin so as to be relatively rotatable, or a member connected to the anchor lock pawl via a rod so as to be relatively displaceable. It is to be understood that, even if they are not connected to each other, they include members that are associated so as to interlock while changing their relative positions by the action of a cam or the like. Further, the predetermined protrusion length is not particularly limited. Preferably it is the maximum protrusion length.

  Returning to the description of Patent Document 1, the attachment of Patent Document 1 includes a rod-shaped attachment frame, and two or three stoppers are arranged inside the attachment frame at short intervals in the front-rear direction. On the other hand, in the side frame that holds the attachment so as to be slidable in the front-rear direction, a plurality of frame square holes, which are through holes extending long in the front-rear direction, are formed. The plurality of frame square holes are arranged in a line in the front-rear direction, and the interval between adjacent frame square holes is particularly shortened. Then, one of the stoppers always engages with the square hole of the frame, thereby always restricting the slide movement of the attachment.

  However, the present inventor has found that there is a point to be further improved in the above-mentioned conventional child seat. That is, since the frame square hole extends for a long time, although the stopper engages with the frame square hole, the gap in the front-rear direction between the two increases, and the attachment slides slightly. This causes rattling in the front-back direction of the sheet body.

  In addition, since the frame square hole extends long and the interval between adjacent frame square holes is particularly short, a portion connecting the right side portion and the left side portion of the side frame becomes small, and the strength of the side frame may be insufficient. .

  Furthermore, the internal structure of the rod-shaped attachment frame becomes complicated, which is disadvantageous in cost.

  In one embodiment of the present invention, in order to solve such a problem, the bar includes a plurality of receiving holes provided at intervals in the longitudinal direction of the bar, and the bar includes a plurality of receiving holes which are displaceably provided in the child seat body. A movable claw that selectively engages with any one of the movable claws, and an operating member that engages with the movable claw to release the movable claw from the receiving hole; It further includes a protrusion length adjusting mechanism for adjusting. The front and rear dimensions of the receiving hole are slightly larger than the front and rear dimensions of the movable claw. The movable claw or the receiving hole prohibits the bar from sliding backward by engagement of the both, and the bar slides forward. This forms a taper so that the engagement between them is released.

  According to this embodiment, since there is no need to lengthen the front-rear dimension of the receiving hole as in Patent Document 1, there is almost no longitudinal gap between the movable claw and the receiving hole that engage with each other, and the child seat body Rattling in the front-rear direction is eliminated.

  Further, according to the embodiment of the present invention, since it is not necessary to lengthen the receiving hole in the front-rear direction as in Patent Document 1, even if a plurality of receiving holes are arranged in the bar, the strength of the bar is not insufficient. Further, since the movable claws are provided not on the bar but on the child seat main body, the bar does not have a complicated structure, which is advantageous in cost.

  The tapered movable claw or the tapered receiving hole is not particularly limited as long as it prohibits the bar from sliding backward and restricts the bar from sliding forward, and various modes are possible. For example, the movable pawl is a front vertical surface that is perpendicular to the sliding direction of the bar and is directed forward of the child seat body, and a surface that is inclined with respect to the sliding direction of the bar and is a child seat. It has a rear slope facing the rear of the body. The front edge of the receiving hole into which the movable claw is inserted abuts on the front vertical surface of the movable claw, thereby restricting sliding of the bar to the rear. The rear edge of the receiving hole into which the movable claw is inserted is formed by the rear slope of the movable claw. By pushing out, the movable claw may retreat from the receiving hole to allow the bar to slide forward. Alternatively, the rear edge of the receiving hole is tapered, and the tapered rear edge abuts the rear edge of the movable claw to push out the movable claw, whereby the movable claw retreats from the receiving hole and slides forward of the bar. The movement may be allowed.

  The number of movable claws may be one, but as a preferred embodiment of the present invention, the plurality of receiving holes are arranged at equal intervals so that adjacent receiving holes are at a predetermined interval, and the movable claws are provided on the child seat body. At least two movable claws are provided, and the plurality of movable claws are arranged apart from each other in the longitudinal direction of the bar at an interval different from a predetermined interval of the receiving holes. According to such an embodiment, the protrusion length of the bar can be finely adjusted. Therefore, usability is improved.

  As described above, according to the present invention, a child seat conforming to the ISOFIX standard can be easily attached and fixed to the anchor of the mating member, and the operation burden on the user is reduced.

It is a side view which shows the child seat which becomes one Embodiment of this invention, and represents the state which accommodated the bar. It is a side view which shows the same embodiment, and represents the state which pulled out the bar from the state of FIG. 1 to predetermined | prescribed protrusion length. It is a side view which shows the same embodiment, and shows the state which connected and fixed the bar to the anchor. It is a side view which shows the same embodiment, and shows the state which accommodated the bar connected and fixed to the anchor. It is sectional drawing which took out the bar and the 1st lock member, and was seen from the upper direction, and represents the state which accommodated the bar. FIG. 5 is a cross-sectional view of the bar and the first lock member taken out and viewed from above, showing a state where the first lock member is engaged with the bar that has been pulled out to a predetermined protrusion length. FIG. 6 is a cross-sectional view of the bar and the first lock member taken out and viewed from above, showing a state in which the engagement between the first lock member and the bar pulled out to a predetermined protrusion length is released. It is sectional drawing which took out the bar | burr and the 1st lock member from the upper direction, and represents the state which pushed the bar connected and fixed to the anchor into the base part. It is a top view which takes out and shows a bar and a block, and represents the storage position of a bar. It is a side view which shows the bar and block shown in FIG. FIG. 10 is a longitudinal sectional view showing a bar and a block shown in FIG. 9. FIG. 10 is a transverse cross-sectional view showing the block shown in FIG. 9. It is a side view which shows the state which pulled up the operation member shown in FIG. FIG. 14 is a longitudinal sectional view illustrating the bar and the block illustrated in FIG. 13, illustrating a state where an operation member is pulled up. FIG. 14 is a transverse cross-sectional view showing the block shown in FIG. 13 in a state where the operation member is pulled up. It is a longitudinal cross-sectional view showing a bar and a block taken out, showing a state in which the bar is pulled out to a maximum protruding length. FIG. 17 is a longitudinal sectional view showing a state in which the bar shown in FIG. 16 is slightly pushed. FIG. 18 is a longitudinal sectional view showing a state where the bar shown in FIG. 17 is slightly pushed in. It is sectional drawing which expands and shows the connection tool of a bar rear end part, and represents the open position of an anchor lock claw. It is sectional drawing which expands and shows the connection tool of a bar rear end part, and represents the closed position of an anchor lock claw.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 are side views of a child seat according to the ISOFIX standard according to an embodiment of the present invention, as viewed from the left side. The child seat 10 is attached and fixed to the adult seat in the order shown in FIGS. The child seat 10 includes a child seat body 11 and a pair of left and right bars 21. The child seat body 11 includes a chair-shaped seat portion 12 adapted to the physique of an infant, and a base portion 13 for supporting the seat portion 12 from below.

  Bars 21 are attached to the bottom of the base 13 on both the left and right sides, respectively. Although the bar 21 is housed in the base portion 13 and cannot be seen from the outside, the bar 21 is shown by a solid line in FIGS. 1 to 4 for easy understanding of the invention. Each bar 21 is held so as to be held by a pair of left and right blocks 41 fixed to the base portion 13 and is slidable in the front-rear direction of the child seat 10 (hereinafter, also simply referred to as the front-rear direction). As shown in FIG. 1, the center region 22 of the bar 21 is housed in the base portion 13 in the housed state that protrudes rearward the shortest, and the rear end 23 of the bar 21 projects from the back surface 13 b of the base portion 13.

  The bar 21 is engaged with a movable claw described later. The movable pawl moves like a ratchet pawl, and successively engages with receiving holes formed at intervals in the longitudinal direction of the bar 21, so that the bar 21 is restricted from being pulled out backward. Allow to be drawn into. However, while the user of the child seat 10 raises the operation member 42 upward, a movable claw described later retreats from the bar 21, and the bar 21 is allowed to slide both forward and backward.

  FIG. 2 shows a state in which the bar 21 is pulled out most backward from the stored state (FIG. 1) to a predetermined protrusion length. The central region 22 of the bar 21 appears rearward from the base 13. When the bar 21 is pulled out by the user's hand so as to have the predetermined protruding length shown in FIG. 2, a first lock member, which will be described later, engages the bar 21, and the bar 21 is prohibited from sliding. Therefore, even if the user pulls the operation member 42 upward in the state shown in FIG. 2, the bar 21 cannot slide.

  The rear end 23 of the bar 21 constitutes a connector of the ISOFIX standard. That is, the rear end portion 23 has a notch 24 cut forward from the rear end of the bar 21 and an anchor lock claw 25 provided inside the notch 24. The child seat body 11 is mounted on a seat surface 103 of an adult seat 102 provided in a passenger car or the like. At this time, the bar 21 extends in the front-rear direction along the seat surface 103. When the user slides the child seat 10 backward on the seating surface 103 to bring the rear end portion 23 closer to the anchor 101 and insert the anchor 101 into the notch 24, the anchor lock claw 25 is moved to the open position shown in FIGS. And the bar 21 is brought into the closed position shown in FIGS. 3 and 4, and the bar 21 is connected and fixed to the anchor 101.

  Here, the bar 21 is prohibited from sliding by the first lock member. Thus, even if the user pushes the child seat 10 shown in FIG. 2 backward, the user's force is reliably applied to the rear end 23 of the bar 21, and the rear end 23 is securely locked to the anchor 101.

  The rear end 23 shown in FIGS. 1 and 2 is enlarged and shown in a vertical cross section on the right side of FIG. 19, and the rear end 23 shown in FIGS. 3 and 4 is enlarged and shown in a vertical cross section on the right side of FIG. Show. Here, the vertical section refers to a section perpendicular to the width direction of the child seat 10. For easier understanding of the invention, the front end area of the bar 21 is shown on the left side of FIG. 19 and FIG.

  An anchor lock claw 25 is provided inside the rear end 23 serving as a connecting tool. The anchor lock claw 25 is supported by a pivot 26 extending in the width direction of the child seat 10 (hereinafter, also simply referred to as the width direction), and is rotatable around the pivot 26. The pivot 26 is disposed above and in front of the notch 24. Further, the anchor lock claw 25 includes a rear contact portion 25t projecting radially from the pivot 26, a hook 25f disposed further rearward than the rear contact portion 25t, and a portion between the rear contact portion 25t and the hook 25f. Notch 26k formed. Further, the anchor lock claw 25 includes an arm portion 25a protruding forward from the pivot 26.

  A torsion spring 27 is attached to the pivot 26. The torsion spring 27 urges the anchor lock claw 25 to the open position shown in FIG. At the open position of the anchor lock claw 25, the rear contact portion 25t is exposed to the notch 24, and the hook 25f is housed inside the rear end 23 and is not exposed to the notch 24. The tip of the arm 25a is lowered. With the anchor 101 separated from the rear end 23, the anchor lock pawl 25 is set to the open position as shown in FIG.

  The anchor 101 enters the notch 24, and the anchor 101 contacts the rear contact portion 25t and pushes the rear contact portion 25t forward from the notch 24, whereby the anchor lock claw 25 rotates and the hook 25f is moved. As shown in FIG. Then, the anchor 101 enters the notch 26 k of the anchor lock claw 25 and is held by the anchor lock claw 25 in the notch 24. Further, the tip of the arm 25a rises, the first unlocking member 33 is urged below the arm 25a and enters from the front, and the anchor lock claw 25 is held at the closed position L. As described above, the anchor lock claw 25 is selectively set to the open position F shown in FIG. 19 and the closed position L shown in FIG. The bar 21 is provided with a spring (not shown) for urging the first unlocking member 33 rearward.

  The description returns to FIG. As shown in FIG. 3, when the rear end 23 of the bar 21 is connected and fixed to the anchor 101, a first lock member described later retreats from the bar 21 in conjunction with the rotation of the anchor lock claw 25, and the bar 21 slides. Movement is allowed. That is, when the user inserts the rear end portion 23 into the anchor 101 and connects and fixes them, the first lock member automatically retreats, and the bar 21 can be stored in the base portion 13.

  Next, when the user slides the child seat 10 backward on the seating surface 103 and makes the back surface 13b of the base portion 13 come into close contact with the backrest surface 104 of the adult seat 102 as shown in FIG. The portion is pushed into the base portion 13 and the length of the bar 21 protruding rearward is reduced. As a result, the child seat 10 is attached and fixed at a suitable front-back position in the adult seat 102. The protrusion length (also referred to as a draw-out length) of the bar 21 can be finely adjusted by a movable claw and a receiving hole described later.

  In order to separate the child seat 10 from the adult seat 102, the user operates an operation member (not shown) provided on the base portion 13 or the bar 21 so that the first unlocking member 33 in the position B shown in FIG. May be displaced forward to a position F shown in FIG. Then, the anchor lock claw 25 is urged to the open position F by the torsion spring 27, so that the anchor 101 can be taken out from the notches 24 and 26k. The above is the outline of the procedure of attaching and fixing the child seat 10 to the adult seat 102 or removing it.

  Next, the first lock member that locks the bar 21 with a predetermined protrusion length so as not to slide will be described in detail.

  5 to 8 are cross-sectional views showing the left-side bar 21 and the first lock member 31 taken out, showing a state viewed from above the child seat 10. FIG. 5 corresponds to FIG. 1 described above, and FIG. FIG. 7 corresponds to FIG. 3 described above, and FIG. 8 corresponds to FIG. 4 described above. Although not shown, a bar and a first lock member are also provided symmetrically on the right side of the base portion 13.

  The first lock member 31 is held inside the case 43 so as to be slidable in the width direction of the base portion 13. The case 43 is attached to the block 41 and protrudes from the block 41 inward in the width direction of the child seat 10. The first lock member 31 is arranged on the inner side in the width direction of the base portion 13 than the bar 21, and the outer end 31 s of the first lock member 31 faces the bar 21, and the inner end 31 t protrudes outside the block 41. The first lock member 31 has a projection 31f that projects in the front-rear direction, and a spring 32 is contracted between the projection 31f and the inner wall of the block 41. The spring 32 urges the first lock member 31 to the bar 21.

  The bar 21 is formed by covering a bar body having a substantially U-shaped cross section with a bar-shaped bar lid body, and has an R-shaped cross section to constitute an internal space. The first lock release member 33 is housed in the internal space of the bar 21. The first lock release member 33 is long and provided along the bar 21. The rear end of the first lock release member 33 is connected to the anchor lock claw 25 via a pivot.

  Normally, the outer end 31s of the first lock member 31 contacts the side surface of the bar 21, as shown in FIG. 5, except for the case where the bar 21 is pulled out most from the base portion 13 and has a predetermined protrusion length. The end 31s does not engage with the bar 21 (non-engagement position). Therefore, the position of the bar 21 is not fixed by the first lock member 31, and the bar 21 is allowed to slide.

  As shown in FIG. 6, when the bar 21 slides to a predetermined protruding length, which is the maximum protruding length in the present embodiment, the first lock member 31 causes the through hole 28 (covered) formed on the width-direction inner side surface of the front region. (Engaging part). Then, the first lock member 31 is urged by the spring 32 and moves outward in the width direction of the base portion 13, and the outer end 31 s passes through the through hole 28. Thereby, the first lock member 31 is engaged with the bar 21 (engagement position), and the bar 21 is not slidable as shown by the mark x in FIG. 6 and is fixed to the maximum protruding length. Further, the outer end 31s of the first lock member 31 enters a notch 34 formed on the inner side surface in the width direction of the first lock release member 33. The side edge of the notch 34 is inclined in a V-shape.

  When the rear end 23 of the bar 21 is locked to the anchor 101 as shown in FIG. 7, the anchor lock pawl 25 is turned from the open position (FIGS. 2 and 19) to the closed position (FIGS. 3 and 20). I do. At this time, the first unlocking member 33 is displaced rearward as shown by the small arrow in FIG. 7 in conjunction with the anchor lock claw 25. Then, the outer end 31 s formed in the tapered shape is pushed away by the inclined side edge of the notch 34, retreats from the notch 34, and almost retreats from the through hole 28. As a result, the sliding restriction of the bar 21 is released. When the sliding of the bar 21 is permitted as shown by the large arrow in FIG. 7, the bar 21 is then pushed into the base portion 13 as shown in FIG. 8, and is moved to the storage position shown in FIG. 1 and FIG. Alternatively, most of the central region 22 is housed in the base portion 13.

  According to the child seat 10 of the present embodiment, a child seat body 11 and a pair of right and left bars 21 attached to the child seat body 11 so as to be slidable in the front-rear direction and extending rearward from the child seat body 11. And a notch 24 provided at the rear end of the bar 21 to receive the anchor 101 of the mating member, a closed position L (FIG. 20) provided in the notch 24 to close the notch 24, and an open position to open the notch 24 F (FIG. 19) and a connector for ISOFIX having an anchor lock claw 25 selectively provided on the child seat body 11 and a predetermined position shown in FIGS. 2 and 6 from the child seat body 11. A first lock member 31 that engages with the through hole 28 (engaged portion) of the bar 21 that is drawn rearward with a protruding length of the bar 21 and that prohibits sliding of the bar 21, and a rear end provided along the bar 21. Is an anchor The front end side region is linked to the hook claw 25 and faces the through hole 28 (engaged portion). The first lock member 31 is connected to the anchor lock claw 25 at the closed position. The first locking member 31 and the through hole 28 (engaged portion) are pushed away from the (engaged portion) and moved away from the through hole 28 (engaged portion) in conjunction with the anchor lock claw 25 that is set to the open position. And a first unlocking member 33 that permits the combination.

  Therefore, the first lock member 31 is interlocked with the movement of the ISOFIX connector (rear end portion 23), and the engagement between the first lock member 31 and the bar 21 is automatically performed by setting the anchor lock claw 25 to the closed position. It is released. Therefore, when the user connects and fixes the bar 21 of the ISOFIX child seat 10 to the anchor 101 of the mating member, the user can immediately push the child seat main body 11 of the ISOFIX child seat 10 rearward to set it at an appropriate longitudinal position. Therefore, the operation frequency of the user can be reduced.

  Next, a movable claw that prohibits the bar 21 from being pulled out and allows the bar 21 to be pushed in will be described. FIG. 9 is a plan view showing the left bar 21 and the block 41 taken out, and the bar 21 is set to the storage position. FIG. 10 is a side view corresponding to FIG. 9 and shows a state where the child seat 10 is viewed from the left side. FIG. 11 is a longitudinal sectional view corresponding to FIG. 9, and shows a state of the child seat 10 as viewed from the left. FIG. 12 is a cross-sectional view corresponding to FIG. 9 and shows a state in which the block 41 is taken out and viewed from behind. 9 to 12 show the same state as FIGS. 1 and 5. As shown in FIG. 9, a plurality of receiving holes 29 are provided on the upper surface of the bar 21 at predetermined intervals T1 in the longitudinal direction of the bar 21.

  The receiving hole 29 is, for example, rectangular, and receives movable claws 36m and 36n described later. Therefore, it is sufficient that the longitudinal dimension of the receiving hole 29 is slightly larger than the longitudinal dimension of the movable claws 36m and 36n. The longitudinal dimension of the receiving hole 29 is smaller than the predetermined interval T1. For this reason, in the bar 21, the region connected in the width direction by the plurality of intervals T <b> 1 becomes more dominant than the region divided in the width direction by the plurality of receiving holes 29. And the strength of the bar 21 can be ensured.

  As shown in FIG. 11, the bar 21 extending linearly passes through a guide 41g formed below the block 41 and penetrating in the front-rear direction, and is slidable in the front-rear direction. An operation member 42 that raises a claw member 36 described below is attached to the outside in the width direction of the block 41. The operating member 42 is normally set at the lower position as shown in FIGS. The claw member 36, the operation member 42, and the plurality of receiving holes 29 constitute a protrusion length adjusting mechanism for adjusting the protrusion length of the bar 21.

  Inside the block 41, as shown in FIG. 11, a plurality of chambers 41r extending in the up-down direction are formed in parallel at intervals in the front-rear direction. Each chamber 41r accommodates a claw member 36, and the claw member 36 is vertically displaceable along a wall surface of the chamber 41r. A spring 37 is contracted at the upper end of each chamber 41r. The spring 37 cheats the claw member 36 downward. Each claw member 36 has a movable claw formed at the lower end thereof in a tapered shape like a right triangle. Specifically, the front surface of the movable claw is a front vertical surface 36i perpendicular to the vertical direction, and the rear surface of the movable claw is a tapered rear inclined surface 36j. The front vertical surface 36i is orthogonal to the sliding direction of the bar 21. On the other hand, the rear slope 36j obliquely crosses the sliding direction of the bar 21.

  A long hole 36h extending in the vertical direction is formed in the claw member 36. A pin 42p extending in the width direction of the child seat 10 penetrates each long hole 36h. The widthwise outer end of the pin 42p is connected to the operation member 42 as shown in FIG. Even if the claw member 36 is displaced up and down, the elongated hole 36h does not interfere with the pin 42p. That is, the claw member 36 is vertically displaceable by the length of the elongated hole 36h in the vertical direction.

  When distinguishing a plurality of movable claws, the front movable claw is designated by reference numeral 36m, and the rear movable claw is designated by reference numeral 36n. The movable claws 36m and 36n are arranged in the front-rear direction at a predetermined interval T2. The interval T2 is different from the interval T1 of the receiving holes 29. In the present embodiment, the interval T2 between the two movable claws 36m and 36n is set to be larger than the interval T1 between the receiving holes 29 by more than one time and less than twice.

  At the storage position of the bar 21 shown in FIG. 11, one movable claw 36m enters one receiving hole 29 and engages with it. On the other hand, the other movable claw 36n does not engage with any of the receiving holes 29.

  FIG. 13 is a side view illustrating a state where the operation member illustrated in FIG. 9 is pulled up, and illustrates a state where the child seat 10 is viewed from the left side. FIG. 14 is a longitudinal sectional view corresponding to FIG. 13 and shows a state of the child seat 10 as viewed from the left. FIG. 15 is a cross-sectional view corresponding to FIG. 13 and shows a state where the block 41 is taken out and viewed from behind. When the user pulls the operation member 42 upward as shown in FIG. 13, all the pins 42p come into contact with the upper ends of the elongated holes 36h as shown in FIGS. 14 and 15, and resist the urging force of the spring 37. The claw member 36 is pulled up. Then, all the movable claws 36m and 36n retreat from the receiving hole 29, and the bar 21 is allowed to slide.

  FIG. 16 is a longitudinal sectional view showing the bar 21 and the block 41 taken out, and shows a state where the bar is pulled out most. When the operator pulls the bar 21 backward with the other hand while lifting the operation member 42 with one hand, and releases the operation member 42 with the maximum protruding length shown in FIG. 16, one movable claw 36m becomes one movable claw 36m. The other movable claw 36m does not engage with any of the receiving holes 29 while engaging with the receiving hole 29.

  Next, when the user pushes the bar 21 slightly forward from the protruding length shown in FIG. 16, the rear edge 29r of the receiving hole 29 engaging with the movable claw 36m pushes back the rear inclined surface 36j of the movable claw 36m, and 36m retreats upward from the receiving hole 29 and is disengaged as shown in FIG. Note that the movable claw 36n remains disengaged from the state shown in FIG.

  Next, when the user pushes the bar 21 slightly forward from the protruding length shown in FIG. 17, the movable claw 36 n faces the receiving hole 29. The movable claw 36n is urged downward by the spring 37 to enter the receiving hole 29 and engage as shown in FIG. Note that the movable pawl 36m remains disengaged from the state shown in FIG.

  Next, when the user pushes the bar 21 forward from the protruding length shown in FIG. 18, the movable claws 36m and 36n are alternately displaced up and down, and the states shown in FIGS. 16 to 18 are repeated. The protrusion length adjusting mechanism of the present embodiment has tapered movable claws 36m and 36n, and since the movable claws 36m and 36n function like ratchet claws, the bar 21 is only allowed to slide forward. . The user does not need to pull up the operating member 42 when pushing the bar 21 into the front base portion 13 to shorten the protruding length of the bar 21. Therefore, when the bar 21 connected to the anchor 101 is pushed into the base portion 13 to shorten its protruding length, the user only needs to release the hand from the operating member 42 and the bar 21 and push the child seat body 11 backward. Alternatively, when the projecting length of the bar 21 is simply desired to be reduced, the user may release his / her hand from the operating member 42 and push the bar 21 forward with one hand.

  Conversely, when the bar 21 is pulled out to increase the protruding length, the bar 21 is prohibited from sliding backward by the movable claws 36m and 36n. Therefore, the user needs to pull up the operation member 42. For example, when extending from the protrusion length shown in FIG. 11 to the protrusion length shown in FIG. 16, the user needs to pull up the operation member 42 with one hand and pull out the bar 21 with the other hand. The ratchet function of the movable claws 36m and 36n is exerted regardless of whether the rear end 23 and the anchor 101 are connected or disconnected.

  According to the present embodiment, the bar 21 includes a plurality of receiving holes 29 provided at intervals in the longitudinal direction of the bar 21, and is displaceably provided in the child seat body 11 to be inserted into any of the plurality of receiving holes 29. The movable claw 36m, 36n to be selectively engaged, and the operation member 42 to be engaged with the movable claw 36m, 36n to separate the movable claw 36m, 36n from the receiving hole 29, and to be rearward from the child seat body 11. And a protrusion length adjusting mechanism for adjusting the protrusion length of the bar 21 extending to the front, the front and rear dimensions of the receiving hole 29 are slightly larger than the front and rear dimensions of the movable claws 36m and 36n. The hole 29 inhibits the bar 21 from sliding backward by the engagement of the two, and the front vertical surface 36i so that the engagement between the two is released by the bar 21 sliding forward. And it is formed in the rear inclined surface 36j (tapered).

  Accordingly, there is almost no gap in the front-rear direction between the movable claws 36m, 36n and the receiving hole 29 which are engaged with each other, and rattling of the child seat body 11 in the front-rear direction is eliminated. In addition, the dimension of the receiving hole 29 in the front-rear direction is required at a minimum, and the predetermined interval T1 can be sufficiently secured. Therefore, even if a plurality of receiving holes 29 are provided in the bar 21, the strength of the bar 21 is not insufficient.

  To further explain this point, as shown in FIG. 11 and the like, the front-rear dimension of the receiving hole 29 (the distance from the front edge 29f to the rear edge 29r) is only required to be slightly larger than the movable claws 36m and 36n. T1 can be made larger than the longitudinal dimension of the receiving hole 29. Therefore, on the upper surface of the bar 21, the length of the bar 21, which is divided by the receiving hole 29 (the front-rear dimension of the receiving hole 29), is reduced, and the strength of the bar 21 is sufficiently secured to improve the safety of the child seat 10. .

  Further, since the movable claws 36m and 36n are provided on the child seat main body 11 instead of the bar 21, the bar 21 does not have a complicated structure, which is advantageous in cost.

  As shown in FIGS. 16 and 18, the front edge 29f of the receiving hole 29 that engages with the movable claw contacts the front vertical surface 36i of the movable claw, so that the bar 21 can be prevented from being pulled out. Therefore, the bar 21 is not pulled out carelessly, and the safety of the child seat 10 can be ensured.

  According to the present embodiment, the plurality of receiving holes 29 are arranged at regular intervals so that the adjacent receiving holes 29, 29 have a predetermined interval T1, and at least two movable claws 36m, 36n are provided on the child seat body 11. The plurality of movable claws 36m and 36n are provided at intervals T2 different from the predetermined interval T1 of the receiving holes 29 and are spaced apart in the longitudinal direction of the bar 21. Since the interval T1 between the receiving holes 29 and the interval T2 between the movable claws 36m and 36n are different from each other, when the bar 21 is pushed in, any one of the plurality of movable claws is engaged with the receiving hole 29 alternately. Therefore, the protrusion length of the bar can be finely adjusted.

  As described above, the embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range as the present invention or within an equivalent range.

  The ISOFIX child seat according to the present invention is advantageously used in a childcare device.

10 Child seat, 11 Child seat body, 12 Seat part,
13 base, 13b back, 21 bar, 22 central area,
23 rear end, 25 anchor lock claw, 25a arm,
25f hook, 25t contact part, 26 pivot, 27 spring,
28 through hole, 29 receiving hole, 29f front edge,
29r rear edge, 31 first lock member,
31s outer end, 31t inner end, 32 spring,
33 first unlocking member, 36 claw member, 36h long hole,
36i front vertical plane, 36j rear slope, 36m, 36n movable claw,
37 springs, 41 blocks, 41g guide,
41r room, 42 operation member, 42p pin,
43 cases, 101 anchors, 102 adult seats.

Claims (3)

A child seat body,
A pair of left and right bars attached to the child seat body so as to be slidable in the front-rear direction and extending rearward from the child seat body;
A notch provided at the rear end of the bar for receiving an anchor of a mating member; and an anchor lock provided in the notch and selectively provided in a closed position for closing the notch and an open position for opening the notch. A connector for ISOFIX having a nail,
A member that is provided so as to be displaceable in the child seat body above, and retracted from the bar to allow the sliding of the bars, or drawn from the child seat body to the rear at a predetermined projection length A first lock member that engages with the engaged portion of the bar and prohibits sliding of the bar;
The anchor lock pawl, which is provided so as to be displaceable along the bar and has a rear end linked to the anchor lock pawl , having a notch portion into which the first lock member enters, and which is at the closed position. When the notch portion is displaced to a position away from the engaged portion in conjunction with, the first lock member is prohibited from engaging with the engaged portion, and the notch portion is engaged with the engaged portion. An ISOFIX child seat, comprising: a first unlocking member that allows the first lock member to enter the notch portion and engage with the engaged portion when displaced to a position that coincides with the position . The bar includes a plurality of receiving holes provided at intervals in the longitudinal direction of the bar,
A movable claw that is displaceably provided in the child seat main body and selectively engages with any of the plurality of receiving holes; and an operation that engages with the movable claw and detaches the movable claw from the receiving hole. A member having a protrusion length adjustment mechanism for adjusting a protrusion length of the bar extending rearward from the child seat body;
The longitudinal dimension of the receiving hole is slightly larger than the longitudinal dimension of the movable claw,
The movable claw or the receiving hole is formed in a tapered shape so as to prohibit the bar from sliding backward by engaging the two and to release the engagement between the bar and the bar by sliding the bar forward. The ISOFIX child seat according to claim 1, wherein The plurality of receiving holes are arranged at equal intervals so that adjacent receiving holes are at a predetermined interval,
At least two movable claws are provided on the child seat body,
The ISOFIX child seat according to claim 2, wherein the plurality of movable claws are arranged at intervals different from the predetermined interval of the receiving holes in a longitudinal direction of the bar.

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