JP2017132321A - ISOFIX child seat - Google Patents

Abstract

A user can easily operate a child seat when connecting a child seat to an ISOFIX standard anchor. A child seat includes a bar (21) extending rearwardly from a child seat body (43), a notch provided at a rear end of the bar for receiving an anchor (101), and a notch. An anchor lock claw that is selectively set to a closed position that closes the notch and an open position that opens the notch, and an engaged portion (28) of the bar that is pulled backward from the child seat body, A first lock member (31) that prohibits sliding, and a member that is provided along the bar and whose rear end is linked to the anchor lock claw and whose front end region faces the engaged portion, and is in the closed position. The first lock member is moved away from the engaged portion in conjunction with the anchor lock claw, and is moved away from the engaged portion in conjunction with the anchor lock claw in the open position. 1st lock which accepts engagement of an engaging part And a dividing member (33). [Selection] Figure 6

Description

  The present invention relates to an ISOFIX child seat used for passenger cars and the like.

  The child seat used by being attached to the adult seat provided in the passenger car is fixed to the adult seat by an appropriate means. As such a fixing means, an ISOFIX standard is known in addition to using a seat belt provided in a passenger car. As documents disclosing the ISOFIX standard, there are, for example, Japanese Patent No. 4544482 (Patent Document 1) and Japanese Patent No. 4544482 (Patent Document 2). The child seats described in Patent Documents 1 and 2 include a seat body corresponding to the seat body and a base body that is detachably attached to the bottom of the seat body. The base body includes a base body that is fixed to the sheet body, and an attachment that is slidably attached to the base body and can be stored or pulled out of the base body. The rear end of the attachment conforms to the ISOFIX standard and is detachably coupled to a pair of anchors provided on the adult seat.

  The base body is provided with a mechanism called a first regulating device. A 1st control apparatus engages with the front end of an attachment in the state by which the attachment was pulled out to the back of the child seat to the maximum, and controls that an attachment slides ahead. As a result, the attachment is held at the maximum drawer position and is not stored in the base body.

  When attaching the child seats described in Patent Documents 1 and 2 to an adult seat installed in a passenger car, separate the seat body and the base body in advance and pull the attachment from the base body to the rear as much as possible. Insert the end into the anchor of the adult seat and fix it. Next, the sheet body is placed on the base body, and the connecting member of the sheet body is engaged with the connecting member of the base body to fix both. Then, the restriction by the first restriction device is released in conjunction with the base body connector, and the attachment can be stored in the base body.

Japanese Patent No. 4544482 Japanese Patent No. 4854482

  However, the present inventor has found that there is a point to be further improved in the 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 attach or remove the child seat itself, which constitutes the majority of the child seat, to the anchor of the mating member.

  It is also conceivable that the first restricting means described in the patent document is made manual instead of the specification interlocked with the coupler. However, if it is set to manual, the user must operate each time, which is complicated.

  An object of the present invention is to provide a child seat of the ISOFIX standard that can reduce a user's operation frequency in view of the above-described situation.

  For this purpose, an ISOFIX child seat according to the present invention includes a child seat body, a pair of left and right bars that are slidably attached to the child seat body and extend rearward from the child seat body, For ISOFIX having a notch provided at the rear end for receiving an anchor of a mating member, and an anchor locking claw provided in the notch, which is selectively set to a closed position for closing the notch and an open position for opening the notch A first lock that is displaceably provided on the child seat body and engages with an engaged portion of the bar that is pulled out rearward from the child seat body by a predetermined protrusion length to inhibit sliding of the bar; A member and a member provided along the bar, the rear end of which is linked to the anchor lock claw and the front end region faces the engaged portion, and the first lock is interlocked with the anchor lock claw that is in the closed position. Part The displacement from the engaged portion, and a first unlocking member to allow engagement of the first locking member and the engaged portion away in conjunction with the anchor lock pawl which is in the open position from the engaged portion.

  According to the present invention, the first lock member is interlocked with the movement of the ISOFIX connector, and the engagement between the first lock member and the bar is automatically released when the anchor lock claw is brought into the closed position. Therefore, the user does not need to perform an extra operation of connecting and fixing the seat body to the base body as described in Patent Document 1, and if the bar of the ISOFIX child seat is connected and fixed to the anchor of the mating member, the child of the ISOFIX child seat is immediately The seat body can be pushed backwards and set in an appropriate front-rear direction position. Therefore, the operation frequency of the user can be reduced.

  The member linked to the anchor lock claw means, for example, a member connected to the anchor lock claw via a pin so as to be capable of relative rotation, or a member connected to the anchor lock claw via a rod so as to be relatively displaceable. In addition, it should be understood to include members that are not connected to each other, but are associated with each other by changing the relative position by the action of a cam or the like. Further, the predetermined protrusion length is not particularly limited. The maximum protrusion length is preferred.

  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 in the attachment frame at short intervals in the front-rear direction. On the other hand, the side frame that holds the attachment so as to be slidable in the front-rear direction is formed with a plurality of frame square holes that are long through holes extending in the front-rear direction. 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, any one of the stoppers is always engaged with the frame hole so that the sliding movement of the attachment is always restricted.

  However, the present inventor has found that there is a point to be further improved in the conventional child seat. That is, since the frame square hole extends long, when the stopper is engaged with the frame square hole, the gap in the front-rear direction between the two becomes large, and the attachment slides slightly. If it does so, it will cause the backlash of the sheet | seat body in the front-back direction.

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

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

  In order to improve such a problem, as one embodiment of the present invention, the bar includes a plurality of receiving holes provided at intervals in the longitudinal direction of the bar, and the bar is provided in a displaceable manner on the child seat body. A movable claw that selectively engages the movable claw, and an operation member that engages the movable claw and disengages the movable claw from the receiving hole, and has a protruding length of a bar that protrudes rearward from the child seat body. A protrusion length adjusting mechanism for adjusting is further provided. And the front-rear dimension of the receiving hole is slightly larger than the front-rear dimension of the movable claw, and the movable claw or the receiving hole prohibits the backward sliding of the bar by the engagement of both, and the bar slides forward. Thus, the taper is formed so that the engagement between the two is released.

  According to this embodiment, since the longitudinal dimension of the receiving hole does not need to be increased as in Patent Document 1, there is almost no gap in the longitudinal direction in the movable claw and the receiving hole that are engaged with each other, and the child seat body The back-and-forth movement in the front and rear is eliminated.

  Further, according to the embodiment of the present invention, since it is not necessary to make the longitudinal dimension of the receiving hole long 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 claw is provided not on the bar but on the child seat body, the bar does not have a complicated structure, which is advantageous in terms of cost.

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

  Although there may be one movable claw, 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. At least two are provided, and the plurality of movable claws are spaced apart in the longitudinal direction of the bar at intervals different from the predetermined interval of the receiving holes. According to this embodiment, the protrusion length of the bar can be finely adjusted. Therefore, usability is improved.

  As described above, according to the present invention, the child seat of 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 | burr. It is a side view which shows the same embodiment, and represents the state which pulled out the bar | burr to the predetermined | prescribed protrusion length from the state of FIG. It is a side view which shows the same embodiment, and represents the state which connected and fixed the bar to the anchor. It is a side view which shows the same embodiment, and represents 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 from the upper part, and represents the state which accommodated the bar. It is sectional drawing which took out the bar and the 1st lock member from the upper part, and represents the state which the 1st lock member engaged with the bar pulled out to predetermined | prescribed protrusion length. It is sectional drawing which took out the bar and the 1st lock member from the upper part, and represents the state which canceled engagement of the bar pulled out to the 1st lock member and predetermined projection length. It is sectional drawing which took out the bar and the 1st locking member from the upper part, and represents the state which pushed in the base part the bar connected and fixed to the anchor. It is a top view which takes out and shows a bar and a block, and represents the storing position of a bar. FIG. 10 is a side view showing the bars and blocks shown in FIG. 9. It is a longitudinal cross-sectional view which shows the bar and block represented by FIG. FIG. 10 is a transverse cross-sectional view showing a block illustrated in FIG. 9. It is a side view which shows the state which pulled up the operation member shown in FIG. It is a longitudinal cross-sectional view which shows the bar and block represented by FIG. 13, and represents the state which pulled up the operating member. FIG. 14 is a cross-sectional view showing the block shown in FIG. 13 taken out and showing a state where the operation member is pulled up. It is a longitudinal cross-sectional view which takes out and shows a bar | burr and a block, and represents the state which pulled out the bar | burr to the maximum protrusion length. It is a longitudinal cross-sectional view which shows the state which pushed down the bar shown in FIG. 16 slightly. It is a longitudinal cross-sectional view which shows the state which pushed down the bar shown in FIG. 17 slightly. It is sectional drawing which expands and shows the coupling tool of a bar rear end part, and represents the open position of an anchor lock nail | claw. It is sectional drawing which expands and shows the coupling tool of a bar rear end part, and represents the closed position of an anchor lock nail | claw.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 are side views of an ISOFIX standard child seat 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 that matches the physique of an infant, and a base portion 13 that supports the seat portion 12 from below.

  Bars 21 are attached to the bottom of the base portion 13 on 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 (hereinafter, also simply referred to as front-rear direction) of the child seat 10. As shown in FIG. 1, the central region 22 of the bar 21 is stored in the base portion 13, and the rear end portion 23 of the bar 21 protrudes from the back surface 13 b of the base portion 13.

  A movable claw described later is engaged with the bar 21. The movable claw moves like a ratchet claw, engages successively with receiving holes formed at intervals in the longitudinal direction of the bar 21, and the bar 21 is restricted from being drawn backward, Allow to be drawn into. However, while the user of the child seat 10 pulls up the operation member 42 upward, a movable claw described later retracts 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 most backward from the housed state (FIG. 1) to a predetermined protruding length. A central region 22 of the bar 21 appears rearward from the base portion 13. When the bar 21 is pulled out by the user so as to have a predetermined protruding length shown in FIG. 2, a first lock member described later is engaged with the bar 21, and the bar 21 is prohibited from sliding. Therefore, even if the user pulls the operating member 42 upward in the state shown in FIG. 2, the bar 21 cannot slide.

  The rear end portion 23 of the bar 21 constitutes an ISOFIX standard connector. 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 in the notch 24. The child seat body 11 is placed 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 seating surface 103. When the user slides the child seat 10 rearward on the seat surface 103, brings the rear end portion 23 close to the anchor 101 and inserts the anchor 101 into the notch 24, the anchor lock claw 25 is opened as shown in FIGS. 3 and FIG. 4, the bar 21 is connected and fixed to the anchor 101.

  Here, in addition, 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 portion 23 of the bar 21, and the rear end portion 23 is reliably 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 cross section refers to a cross section perpendicular to the width direction of the child seat 10. In order to facilitate understanding of the invention, the front end region 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 connector. The anchor lock claw 25 is pivotally 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 can be rotated around the pivot 26. The pivot 26 is disposed above and in front of the notch 24. The anchor lock claw 25 includes a rear abutting portion 25t that protrudes in the radial direction from the pivot 26, a hook 25f that is disposed further rearward than the rear abutting portion 25t, and the rear abutting portion 25t and the hook 25f. And a notch 26k to be formed. Further, the anchor lock claw 25 includes an arm portion 25 a that protrudes forward from the pivot shaft 26.

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

  When the anchor 101 enters the notch 24, the anchor 101 abuts on the rear abutting portion 25t and pushes the rear abutting portion 25t forward from the notch 24, the anchor lock claw 25 rotates and the hook 25f is moved. As shown in FIG. 20, it is exposed in the notch 24. Then, the anchor 101 enters the notch 26 k of the anchor lock claw 25 and is held by the anchor lock claw 25 within the notch 24. Further, the tip of the arm portion 25a rises, the first lock release member 33 is urged below the arm portion 25a and enters from the front, and the anchor lock claw 25 is held at the closed position L. Thus, 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) that biases the first unlocking member 33 rearward.

  Returning to FIG. As shown in FIG. 3, when the rear end portion 23 of the bar 21 is connected and fixed to the anchor 101, a first lock member described later moves backward from the bar 21 in conjunction with the rotation of the anchor lock claw 25, and the bar 21 slides. Allowed to move. That is, when the user inserts the rear end portion 23 into the anchor 101 and connects and fixes them together, the first lock member automatically retracts, and the bar 21 can be stored in the base portion 13.

  Next, when the user slides the child seat 10 rearward on the seat surface 103 and brings the back surface 13b of the base portion 13 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 protruding length of the bar 21 toward the rear is shortened. As a result, the child seat 10 is attached and fixed at a suitable longitudinal position in the adult seat 102. The protruding length (also referred to as the drawer 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 the operation member (not shown) provided on the base portion 13 or the bar 21 so that the first unlocking member 33 placed at 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 for 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 in a non-slidable manner with a predetermined protrusion length will be described in detail.

  5 to 8 are cross-sectional views showing the left bar 21 and the first lock member 31 taken out, showing a state seen from above the child seat 10, FIG. 5 corresponds to FIG. 1 described above, and FIG. 2 corresponds to FIG. 2 described above, FIG. 7 corresponds to FIG. 3 described above, and FIG. 8 corresponds to FIG. 4 described above. Although not shown, the bar and the 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 inward in the width direction of the child seat 10 from the block 41. The first lock member 31 is disposed on the inner side in the width direction of the base portion 13 than the bar 21, the outer end 31 s of the first lock member 31 is directed to the bar 21, and the inner end 31 t protrudes outward of the block 41. The first lock member 31 has a protrusion 31 f that projects in the front-rear direction, and a spring 32 is contracted between the protrusion 31 f and the inner wall portion of the block 41. The spring 32 biases the first lock member 31 toward the bar 21.

  The bar 21 is obtained by covering a bar body having a substantially U-shaped cross section with a bar-plate-shaped bar cover, and forming an internal space with a cross-sectionally square shape. A first unlocking member 33 is accommodated in the internal space of the bar 21. The first unlocking member 33 is long and is 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 31 s of the first lock member 31 abuts 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 to have a predetermined protruding length. The end 31s does not engage with the bar 21 (non-engagement position). For this reason, the bar 21 is not fixed in position by the first lock member 31 and 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 this embodiment, the first lock member 31 has a through hole 28 (covered) formed on the inner side in the width direction of the front region. It faces the 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 penetrates the through hole 28. As a result, the first lock member 31 engages with the bar 21 (engagement position), and the bar 21 becomes non-slidable and fixed to the maximum projecting length as indicated by a cross in FIG. Further, the outer end 31 s 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.

  As shown in FIG. 7, when the rear end 23 of the bar 21 is locked to the anchor 101, the anchor lock claw 25 is turned upright from the open position (FIGS. 2 and 19) to the closed position (FIGS. 3 and 20). To do. At this time, the first lock release member 33 is displaced rearward as shown by a small arrow in FIG. Then, the outer end 31 s formed in a tapered shape is pushed away by the inclined side edge of the notch 34, and is retreated from the notch 34 and almost retreated from the through hole 28. Thereby, the sliding regulation of the bar 21 is released. When the bar 21 is allowed to slide as shown by a 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 FIGS. Alternatively, most of the central region 22 is accommodated in the base portion 13.

  According to the child seat 10 of the present embodiment, a child seat main body 11 and a pair of left and right bars 21 that are slidably attached to the child seat main body 11 and project rearward from the child seat main body 11. A notch 24 provided at the rear end of the bar 21 for receiving the anchor 101 of the mating member, a closed position L (FIG. 20) provided at the notch 24 for closing the notch 24, and an open position for opening the notch 24. F (FIG. 19) and an ISOFIX connector having an anchor lock claw 25 selectively provided, and a child seat body 11 that is displaceably provided on the child seat body 11 from the child seat body 11 as shown in FIG. 2 and FIG. A first locking member 31 that engages with a through-hole 28 (engaged portion) of the bar 21 that is pulled out rearward with a protruding length of 10 mm and prohibits sliding of the bar 21, and a rear end provided along the bar 21 Is an anchor The first locking member 31 is connected to the through hole 28 in conjunction with the anchor lock claw 25 which is linked to the hook claw 25 and whose front end region faces the through hole 28 (engaged portion). The first locking member 31 and the through hole 28 (engaged portion) are moved away from the through hole 28 (engaged portion) in conjunction with the anchor lock claw 25 pushed away from the (engaged portion) and brought into the open position. And a first lock release member 33 that allows the connection.

  Therefore, when the first lock member 31 is interlocked with the movement of the ISOFIX connector (rear end portion 23) and the anchor lock claw 25 is brought into the closed position, the engagement between the first lock member 31 and the bar 21 is automatically performed. Canceled. Accordingly, when the bar 21 of the ISOFIX child seat 10 is connected and fixed to the anchor 101 of the mating member, the user can immediately push the child seat body 11 of the ISOFIX child seat 10 backward and set it in an appropriate front-rear direction position. Therefore, the operation frequency of the user can be reduced.

  Next, a movable claw that prohibits the pulling out of the bar 21 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 placed in the storage position. FIG. 10 is a side view corresponding to FIG. 9 and shows the child seat 10 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 side. FIG. 12 is a cross-sectional view corresponding to FIG. 9 and shows a state in which the block 41 is taken out and seen from the rear. 9-12 represents the same state as FIG. 1 and FIG. As shown in FIG. 9, a plurality of receiving holes 29 are provided on the upper surface of the bar 21 at a predetermined interval T <b> 1 in the longitudinal direction of the bar 21.

  The receiving hole 29 is rectangular, for example, and receives movable claws 36m and 36n described later. Therefore, it is sufficient that the dimension in the front-rear direction of the receiving hole 29 is slightly larger than the dimension in the front-rear direction of the movable claws 36m, 36n. The longitudinal dimension of the receiving hole 29 is smaller than the predetermined interval T1. For this reason, in the bar 21, the area | region connected by the some space | interval T1 in the width direction becomes dominant rather than the area | region divided by the some receiving hole 29 in the width direction. The strength of the bar 21 can be ensured.

  As shown in FIG. 11, the linearly extending bar 21 is slidable in the front-rear direction through a guide 41 g formed in the lower portion of the block 41 and penetrating in the front-rear direction. On the outer side in the width direction of the block 41, an operation member 42 that causes a claw member 36 to be described later upward is attached. The operation member 42 is normally in 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 adjustment mechanism that adjusts the protrusion length of the bar 21.

  Inside the block 41, as shown in FIG. 11, a plurality of chambers 41r extending in the vertical direction are formed in parallel with a space in the front-rear direction. Each chamber 41r accommodates a claw member 36, and the claw member 36 can be displaced in the vertical direction along the wall surface of the chamber 41r. A spring 37 is contracted at the upper end of each chamber 41r. The spring 37 chews the pawl member 36 downward. Each claw member 36 has a movable claw formed in a tapered shape like a right triangle at the lower end. 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 slope 36j. The front vertical surface 36 i is orthogonal to the sliding direction of the bar 21. On the other hand, the rear slope 36j crosses the sliding direction of the bar 21 diagonally.

  The claw member 36 is formed with a long hole 36h extending in the vertical direction. And the pin 42p extended in the width direction of the child seat 10 penetrates each long hole 36h. The outer end in the width direction of the pin 42p is coupled to the operation member 42 as shown in FIG. Even if the claw member 36 is displaced vertically, the long hole 36h does not interfere with the pin 42p. That is, the claw member 36 can be displaced in the vertical direction by the vertical length of the long hole 36h.

  When distinguishing a plurality of movable claws, the front movable claws are denoted by reference numeral 36m, and the rear movable claws are denoted by reference numeral 36n. The movable claws 36m and 36n are arranged in the front-rear direction with a predetermined interval T2. The interval T2 is different from the interval T1 of the receiving hole 29. In the present embodiment, the interval T2 between the two movable claws 36m and 36n is larger than the interval T1 between the receiving holes 29 by a factor of 1 and larger than 2 times.

  At the storage position of the bar 21 shown in FIG. 11, one movable claw 36 m enters and engages with one receiving hole 29. 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 showing a state in which the operating member shown in FIG. 9 is pulled upward, and shows a state as seen from the left side of the child seat 10. FIG. 14 is a longitudinal sectional view corresponding to FIG. 13 and shows a state of the child seat 10 viewed from the left side. FIG. 15 is a cross-sectional view corresponding to FIG. 13 and shows a state in which the block 41 is taken out and seen from the rear. When the user pulls the operating member 42 upward as shown in FIG. 13, all the pins 42p come into contact with the upper end of the long hole 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 are retracted 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 pulling up the operation member 42 with one hand and releases the hand from the operation member 42 with the maximum projecting length shown in FIG. 16, one movable claw 36m has one piece. While engaging with the receiving hole 29, the other movable claw 36 m does not engage with any of the receiving holes 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 engaged with the movable claw 36m pushes back the rear inclined surface 36j of the movable claw 36m, and the movable claw 36m retreats upward from the receiving hole 29 and is disengaged as shown in FIG. 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, enters the receiving hole 29, and engages as shown in FIG. The movable claw 36m continues to be 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 displaced up and down alternately and repeat the states shown in FIGS. The protrusion length adjusting mechanism of the present embodiment has tapered movable claws 36m and 36n, and the movable claws 36m and 36n function like ratchet claws, so that the bar 21 is allowed only to slide forward. . The user does not need to pull up the operation member 42 when the bar 21 is pushed 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 the protruding length, the user only has to release the operation member 42 and the bar 21 and push the child seat body 11 backward. Alternatively, when the user only wants to shorten the protruding length of the bar 21, the user may release his hand from the operation member 42 and push the bar 21 forward with one hand.

  On the other hand, when the bar 21 is pulled out to increase the protrusion length, the bar 21 is prohibited from sliding backward by the movable claws 36m and 36n, so the user needs to pull up the operation member 42. For example, when extending from the protruding length shown in FIG. 11 to the protruding length shown in FIG. 16, the user needs to pull up the operating 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 exhibited regardless of whether the rear end portion 23 and the anchor 101 are connected or not connected.

  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 provided in the child seat main body 11 so as to be displaceable. A movable claw 36m, 36n that selectively engages, and an operation member 42 that engages with the movable claw 36m, 36n to disengage the movable claw 36m, 36n from the receiving hole 29, and are rearward from the child seat body 11. And a protrusion length adjusting mechanism that adjusts the protrusion length of the bar 21 that protrudes to the front, and the front and rear dimension of the receiving hole 29 is slightly larger than the front and rear dimension of the movable claws 36m and 36n. The hole 29 prohibits the backward sliding of the bar 21 due to the engagement between the two, and the front vertical surface 36i so that the engagement between the two is released when the bar 21 slides forward. And it is formed in the rear inclined surface 36j (tapered).

  Therefore, there is almost no gap in the front-rear direction in the movable claws 36m, 36n and the receiving hole 29 that are engaged with each other, and the back-and-forth movement in the child seat body 11 is eliminated. Further, the dimension in the front-rear direction of the receiving hole 29 becomes a minimum, and the predetermined interval T1 can be sufficiently secured. Therefore, even if a plurality of receiving holes 29 are arranged in the bar 21, the strength of the bar 21 is not insufficient.

  As a supplementary explanation of this point, as shown in FIG. 11 and the like, the longitudinal dimension of the receiving hole 29 (the distance from the front edge 29f to the rear edge 29r) only needs 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 dividing by the receiving hole 29 (dimension in the front-rear direction of the receiving hole 29) can be reduced to sufficiently secure the strength of the bar 21 and improve the safety of the child seat 10. .

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

  Further, as shown in FIGS. 16 and 18, the front edge 29f of the receiving hole 29 that engages with the movable claw abuts on 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.

  Further, according to the present embodiment, the plurality of receiving holes 29 are arranged at equal intervals so that the adjacent receiving holes 29, 29 are at a predetermined interval T1, and at least two movable claws 36m, 36n are provided in the child seat body 11. The plurality of movable claws 36m, 36n are arranged at a distance T2 different from the predetermined distance T1 of the receiving hole 29 and are separated in the longitudinal direction of the bar 21. Thus, since the interval T1 of the receiving hole 29 and the interval T2 of the movable claws 36m, 36n are different, any of the plurality of movable claws are alternately engaged with the receiving hole 29 when the bar 21 is pushed. For this reason, the protrusion length of the bar can be finely adjusted.

  Although the embodiments of the present invention have been described with reference to the drawings, 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 or equivalent range as the present invention.

  The ISOFIX child seat according to the present invention is advantageously used in child-care equipment.

10 Child seat, 11 Child seat body, 12 Seat part,
13 base portion, 13b back surface, 21 bar, 22 central region,
23 rear end, 25 anchor lock claw, 25a arm,
25f hook, 25t contact part, 26 pivot, 27 spring,
28 through holes, 29 receiving holes, 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 surface, 36j rear slope, 36m, 36n movable claw,
37 springs, 41 blocks, 41g guides,
41r chamber, 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 selected between a closed position for closing the notch and an open position for opening the notch An ISOFIX connector having claws;
A first displaceable member is provided on the child seat main body and engages with an engaged portion of the bar that is pulled out rearward from the child seat main body with a predetermined protrusion length to inhibit sliding of the bar. A locking member;
A member provided along the bar and having a rear end linked to the anchor lock claw and a front end side region facing the engaged portion, in conjunction with the anchor lock claw being in the closed position. The first lock member is pushed away from the engaged portion, and is moved away from the engaged portion in conjunction with the anchor lock claw in the open position, and the first lock member and the engaged portion are allowed to engage with each other. An ISOFIX child seat comprising a first unlocking member. 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 on the child seat body and that selectively engages with any of the plurality of receiving holes, and an operation that engages with the movable claw and disengages the movable claw from the receiving hole. A protrusion length adjusting mechanism that adjusts the protrusion length of the bar that protrudes 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 backward sliding of the bar by the engagement of both and the engagement of the both is released by the sliding of the bar to the front. The ISOFIX child seat according to claim 1. The plurality of receiving holes are arranged at equal intervals so that adjacent receiving holes have a predetermined interval,
At least two of the movable claws are provided on the child seat body,
3. The ISOFIX child seat according to claim 2, wherein the plurality of movable claws are spaced apart from each other in the longitudinal direction of the bar at an interval different from the predetermined interval of the receiving hole.

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