JP2505602Y2 - Child seat and child seat mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a child seat for a child occupant in a vehicle.

[Prior art]

There is a child seat capable of appropriately protecting a child occupant even when the vehicle occupies a sudden deceleration state due to a child occupant having a different physical structure from an adult occupant.

This type of child seat is mounted on an adult occupant seat mounted on a vehicle and fixed to the adult occupant seat by an occupant restraining webbing mounted on the vehicle. In addition, a seat belt device is attached to this type of child seat, and a child occupant is restrained by a webbing provided in the seat belt device.

By the way, in this kind of children's seat, the seat height of the seat cushion is constant, so that if the seat height of the child occupant is different, the height of the line of sight will be changed accordingly, and the child occupant with a low seat height will be seated. When doing, the height of the line of sight was lowered, and there was the problem that it was difficult to see the scenery outside the vehicle.

Also, in order to properly attach the webbing to the child occupant, it is necessary to set the outlet height of the shoulder webbing in accordance with the physique of the child occupant. This is done by providing an outlet for each shoulder webbing and replacing the shoulder webbing. Therefore, when a child occupant with a different sitting height is seated, the shoulder webbing must be replaced each time, and the work becomes complicated.

Furthermore, this type of child seat is designed to be fixed to an adult passenger seat with an occupant restraining webbing.
In order to securely fix the seat to the adult occupant, it had to be attached carefully, which made the work complicated.

[Problems to be solved by the device]

In consideration of the above facts, the present invention provides a child seat that has a good visibility for the child passenger and can be easily attached to an adult passenger seat even when a child passenger having a different body size is seated. Is the purpose.

[Means for solving the problem]

The invention according to claim (1) is a child seat including a seat frame having a seat back and a headrest, and a seat cushion movably supported by the seat frame, wherein the seat cushion is parallel to the vertical direction. A parallel moving means for moving the seat cushion so as to change the relative position of the seat cushion with respect to the headrest, a plurality of engaged portions provided in the seat frame and adjacent in the height direction, and a plurality of the engaged members. The engaging portion that selectively engages with one of the engaging portions and the plurality of engaged portions are connected in the vertical direction, and the engaging portion is disengaged from the engaged portions. A guide part that guides the joint part movably in the height direction, and the seat cushion, which is provided in the seat cushion and slidably supports the engagement part between the engaged part and the guide part,
Slide support means for supporting the seat cushion on the seat frame via the engaging portion and the engaged portion when the engaging portion engages with the engaged portion. I am trying.

A child seat mounting structure supported by a vehicle seat back according to claim (2) is a child seat mounting structure supported by a vehicle seat back, wherein the child seat mounting structure is connected to a strength member of the vehicle seat back. An upper mounting shaft that is formed on the upper portion of the seat back and is inserted into a first hole that extends in the vertical direction of the vehicle seat back, and a second hole that is located below the first hole provided in the vehicle seat back. And a lower connecting means that is inserted from the front of the vehicle and is connected to the strength member of the seat back cover.

[Action]

In the present invention of the above-mentioned claim (1), the seat cushion moves in parallel in the vertical direction with respect to the headrest, and the seat cushion can be connected and held to the seat frame through the engaging portion and the engaged portion. . This makes it possible to change the relative position between the seat cushion and the headrest, and by moving the seat cushion in parallel according to the physique of the child occupant, the head of the child occupant having a different physique can be positioned at the optimum position of the headrest. It can be done. Therefore, the position of the line of sight of the child occupant can be supported at a fixed position with respect to the headrest. When the seat cushion is moved in parallel, the engaging portion is slid from the engaged portion to the guide portion. The engaging portion that is in the disengaged state with the engaged portion is guided by the guide portion so as to be movable in the height direction. As a result, the engaging portion can be easily engaged with another engaged portion. In the present invention according to claim (2), the upper portion of the child seat is supported by inserting the upper mounting shaft of the child seat into the first hole provided in the upper portion of the vehicle seat back, and the upper portion of the child seat is supported. The lower part of the child seat is supported by inserting the lower connecting means into the second hole provided in the seat back and connecting it to the strength member of the vehicle seat back, whereby the child seat is reliably supported by the vehicle seat back. It

〔Example〕

FIG. 1 is a perspective view showing a child seat 10 to which claims (1) and (2) are applied and a vehicle seat 12 to which the child seat 10 is attached. Vehicle seat 12
Is provided with an upper fixing portion 14 and a lower fixing portion 16 for attaching the child seat 10.

A pair of upper fixing portions 14 are provided on the upper end of the seat back 18 of the vehicle seat 12, and are fixed to the strength member 30 inside the seat back 18. A mounting hole 20 as a first hole is formed in the upper fixing portion 14. As shown in FIG. 2, the mounting hole 20 has a diametrically enlarged recess 22 formed below,
It serves as a holding portion when a shaft 24 as an upper mounting shaft to be described later is inserted.

On the other hand, a pair of lower fixing portions 16 are provided near the both ends in the vehicle width direction below the vehicle front side of the seat back 18. The lower fixing portion 16 is provided with a rectangular opening 26 as a second hole that is opened on the vehicle front side surface of the seat back 18, and inside the seat back 18 corresponding to the rectangular opening 26, the strength is increased along the vehicle width direction. A fixed bar 28 as a member is arranged. The fixing bar 28 has a circular cross section at a right angle in the longitudinal direction, and is fixed to a strength member 30 provided inside the seat back 18.

The child seat 10 is located on the vehicle front side of the seat back 18 (first
It is arranged on the arrow F side in the drawing).

As shown in FIG. 3, the child seat 10 is provided with a seat frame 32. The seat frame 32 has a back plate portion 34 on the vehicle rear side (arrow B direction in FIG. 3), and a bottom portion 36 extends forward from the vehicle at the lower end portion of the back plate portion 34.
Further, both ends of the back plate portion 34 and the bottom portion 36 in the vehicle width direction (directions of arrows R and L in FIG. 3) are connected by a pair of side plates 38.

A headrest 40 is attached to the upper end of the back plate portion 34. As shown in FIG. 4, a sponge-like energy absorbing material 42 is attached together with a skin 44 on the vehicle front side of the headrest 40 (direction of arrow F in FIG. 4), and when the head of a child occupant abuts it. It is designed to absorb the shock of.

A pair of through holes 46 are formed between the headrest 40 and the back plate portion 34. The shoulder webbing 48 is taken out from each of the through holes 46, and one end of each of the shoulder webbings 48 is locked by a pair of retractors 50 attached to the inside of the head restraint 40 and wound up in layers. On the other hand, the tongue plate 52 is attached to the other end of the shoulder webbing 48, respectively.
The tongue plates 52 can be engaged with the bag device 54.

The vehicle front side of the back plate portion 34 is covered with a back plate cover 56. A part 58 of the back plate cover 56 extends further downward from a notch 60 formed below the vehicle front side of the back plate part 34, and a tip 62 is locked to one end of a tension spring 64. There is. The other end of the tension spring 64 is locked to the upper surface of the substantially central portion of the bottom portion 36, and the tip portion 62 of the back plate cover 56 is pulled by the urging force.

Further, the seat frame 32 is provided with an upper fixing metal fitting 66 for attaching to the seat back 18 and a lower fixing metal fitting 68 as a lower connecting means.

The upper fixing bracket 66 is a substantially U-shaped rotating frame 74 formed by a pair of side plates 70 facing each other and extending obliquely upward and rearward of the vehicle and a connecting plate 72 connecting end portions of the side plates 70 on the vehicle rear side. Is equipped with.

As shown in FIG. 5, a pair of circular holes 220 are formed in the vicinity of both ends of the connecting plate 72 in the vehicle width direction (arrow R and L directions in FIG. 5). A shaft 222 is rotatably inserted in these round holes 220, and one end of a sub arm 224 is attached to the lower end. As a result, the sub-arm 224 can rotate about the axis of the shaft 222 (direction of arrow A and opposite direction). A head portion 226 having an outer diameter larger than the inner diameter of the round hole 220 is formed at the upper end of the shaft 222 so that the sub arm 224 does not come off the round hole 220. The other end of the sub-arm 224 has a cylindrical boss 2 on the lower surface.
28 are provided. The sub arm 224 is on the bottom surface of the boss 228.
A groove 229 is formed along the longitudinal direction of the. This groove 229
A pin 230 passes through inward of the sub-arm 224 at a right angle to the longitudinal direction of the sub-arm 224, and a shaft 24 is rotatably supported at an intermediate portion in the longitudinal direction of the pin 230 passed inward of the groove. Both ends of the pin 230 project outward from the outer peripheral surface of the boss 228 in the radial direction, and both tips are crimped so as not to come out of the boss 228.

Therefore, the shaft 24 is centered around the pin 230 in the direction along the sub-arm 224 (the direction opposite to the arrow B direction), or
As shown in FIG. 9, the sub arm 224 can rotate in the hanging direction (arrow B direction), and by contacting the bottom of the groove 229, the rotation in the arrow B direction stops at the position shown in FIG. It has become.

The shaft 24 can be inserted into the mounting hole 20 of the seat back 18. As shown in FIG. 6, a substantially spherical protrusion 76 is formed at the tip of each shaft 24, and a split groove 77 is formed in the shaft 24 along the axial direction so that the shaft 24 can be elastically deformed. ing. Therefore, when the shaft 24 is inserted into the mounting hole 20, the convex portion 76 is attached to the mounting hole 20.
The tip of the shaft 24 is deformed toward the axis by being pressed by the opening edge of the shaft 24 and further pushed inward of the mounting hole 20 to be inserted into the mounting hole 20.

Next, when the convex portion 76 of the shaft 24 reaches the concave portion 22 of the mounting hole 20, the tip of the shaft 24 returns to its original position due to the elastic force, and the convex portion 76
76 is adapted to be engaged with and held in the recess 22.

As shown in FIG. 5, rotation support holes 78 are provided near the vehicle front side (arrow F side in FIG. 5) end of the side plate 70 of the rotating frame 74.
Are formed.

On the other hand, above the rear plate portion 34 of the seat frame 32 on the vehicle rear side, a concave storage portion 82 (seventh portion) corresponding to the rotating frame 74 is provided.
Figure) has been formed. A support shaft 75 is arranged in this storage portion, and an upper fixing metal fitting 66 is rotatably attached to the shaft 75. Therefore, the upper fixing bracket 66 is
When rotated in the clockwise direction (arrow C direction), the storage
It is designed to be stored in 82.

In this case, as shown in FIG. 13, by shifting the shaft 24 and the sub-arm 224 from the state of FIG. 9 in the direction opposite to the arrow B direction and the direction opposite to the arrow A direction, the seat frame The protrusion on the back side of 32 can be eliminated.

 Next, the lower fixing member 68 will be described.

As shown in FIG. 8, the lower fixing member 68 is an arm plate shape extending along the vehicle front-rear direction (directions of arrows F and B in FIG. 8), and a substantially U-shaped notch 86 is provided at the end portion on the vehicle rear side. It is formed so that the fixing bar 28 of the seat back 18 can be inserted therein. Further, as shown in FIG. 1, the fixed bar 28 is provided with a guide plate 28A corresponding thereto, and serves as a guide portion when the notch 86 is inserted.

In the lower fixing bracket 68, along the arc portion of the notch 86,
A C-shaped slide hole 88 is formed in the longitudinal direction, and a lock pin hole 90 is formed in communication with the slide hole 88 along the longitudinal direction of the lower fixing bracket 68.
A long hole 92 is formed in the middle of the longitudinal direction 90 so as to communicate downward with the outside. A slide hook 94 formed in a substantially semi-arcuate shape is inserted in the slide hole 88, and a compression coil spring 96 arranged inside the slide hole 88 is inserted.
The tip portion 98 is constantly biased toward the outside of the slide hole 88 so that the inner diameter of the inlet of the notch 86 is narrowed.
The moving stroke of the slide hook 94 is limited to a predetermined length by a stopper (not shown). A notch 100 for locking is formed on the outer surface of the slide hook 94.

A lock pin 102 is slidably inserted into the lock pin hole 90, and a tip end portion 104 is biased by a compression coil spring 103 toward a slide hook 94 and inserted into a notch 100 of the slide hook 94. Therefore, in this state, the slide hook 94 does not move carelessly.
Further, when the lock pin 102 is slid in the direction opposite to the direction of the slide hook 94, the tip portion 104 is separated from the notch 100 so that the slide hook 94 can freely slide. Further, a slide lever 106 is fixed to an intermediate portion in the longitudinal direction of the lock pin 102, and the slide lever 106 is inserted into the elongated hole 92, and a tip portion thereof projects outside the elongated hole 92. Therefore, the lock pin 102 can be pulled out from the notch 100 of the slide hook 94 by sliding the slide lever 106.

Further, a round hole 107 is formed in the vicinity of an end portion of the lower fixing bracket 68 on the vehicle front side.
The second shaft 108 is inserted.

A storage groove 110 is formed at the lower end of each side plate 38 of the seat frame 32 from the vehicle rear end toward the vehicle front. A shaft 108 is arranged inside the storage groove 110 on the vehicle rear side, and a lower fixing member 68 is rotatably supported by the shaft 108. Therefore, as shown in FIG. 1, when the lower fixing member 68 is rotated rearward of the vehicle, the lower fixing bracket 68 is protruded from the rear end of the side plate 38 toward the rear of the vehicle by a predetermined length. As indicated by the line, when it is rotated toward the vehicle front side about the shaft 108, it is accommodated in the storage groove 110.

On the other hand, on the upper surface of the bottom portion 36 of the seat frame 32, four bosses 112 are arranged at predetermined intervals as shown in FIG. Each of the bosses 112 is formed in a prismatic shape, and a hole 120 is formed in the upper part of each. These holes 120 are drilled along the vehicle width direction of the boss 112 and each of the holes 1
The axes of 20 are arranged at the same height from the bottom 36, and links 122 are inserted into these holes 120, respectively. The link 122 and the bottom portion 36 of the seat frame 32 constitute a parallel moving means.

The link 122 is made of a rod having a circular cross section, the right-angled bent portion at the lower end of the straight portion 126 is inserted into the hole 120, and the upper rotating portion 128 is formed at a right angle at the upper end to form a crank shape. . The lengths of these straight portions 126 are all the same. Therefore, these links 122 can swing within the vertical plane along the vehicle longitudinal direction about the axis of the hole 120.

Further, a torsion coil spring 130 is coaxially arranged on the outer periphery at the right-angled bent portion at the lower end of the straight portion 126. One end of the torsion coil spring 130 is locked to the boss 112,
The other end is locked to the middle part of the straight part 126, and the link 1
The upper rotating portion 128 of 22 is biased in the direction away from the bottom portion 36.

On the other hand, a seat cushion 132 is arranged above the bottom portion 36, and the seat cushion 132 is supported by the upper rotating portion 128 of the link 122.

The seat cushion 132 is provided with a seat frame 134. The seat frame 134 is provided with a substantially rectangular seat plate 136, and the vehicle front side of the seat plate 136 is bent obliquely downward toward the front of the vehicle. The upper surface of the seat plate 136 is covered with a seat cushion material 138.

Further, a rectangular crotch belt insertion hole 140 is formed in the vicinity of the vehicle front side end of the vehicle width direction middle portion of the seat plate 136. One end of the crotch belt 142 is inserted through the crotch belt insertion hole 140 and is locked by a locking portion 144 provided on the lower surface of the seat frame 32. On the other hand, the other end of the crotch belt 142 is projected above the seat plate 136 to connect the buck device 54.

A claw portion 148 is provided on the lower surface of the seat plate 136 near the vehicle front side end portion, and projects downward from the vehicle front side end portion.

On the other hand, a pair of vertical plates 150 extending downward in the vehicle and facing each other are formed near both ends of the seat plate 136 in the vehicle width direction. Support holes 154 are formed on the vehicle front side and the vehicle rear side of the vertical plates 150, respectively, and the upper rotation portions 128 of the links 122 are inserted into the support holes 154 for rotation. The axes of the support holes 154 are aligned on the same plane corresponding to the axes of the holes 120 of the boss 112.

Therefore, the link 122 constitutes a parallel link, and the seat frame 134 is translated in the downward direction and moved in the vehicle front direction when the link 122 is rotated in the vehicle front direction. When the vehicle is rotated in the rear direction, it is moved in parallel in the upward direction and is moved in the rear direction of the vehicle.

A lower support plate 156 is provided at a lower end portion of the vertical plate 150 so as to project outward in the vehicle width direction and extend along the vehicle front rear side. Above the lower support plate 156, an upper support plate 158 is provided in parallel at a predetermined interval, and the lower support plate 1 is provided.
A slide groove 160 is formed between 56 and the upper support plate 158.
Further, retaining pins 162 are provided near both ends of the lower support plate 156 and the upper support plate 158 in the vehicle front-rear direction so as to pass through and engage with the lower support plate 156 and the upper support plate 158.

Further, a lock plate 164 is arranged in the slide groove 160.

The lock plate 164 is provided with a pair of lock bars 168 extending toward the rear side of the vehicle at both ends of the connecting plate 166 arranged along the vehicle width direction in the vehicle width direction, and the lock bars 168 are inserted into the slide grooves 160. It can be slid.

A pair of elongated holes 170 are provided near both ends of the lock bar 168 in the vehicle front-rear direction. A retaining pin 162 is inserted into each of the elongated holes 170, whereby the lock bar 168 can be moved within a range in which a longitudinal end portion of the elongated hole 170 contacts the retaining pin 162.

Further, on the vehicle width direction outer side surface of the lock bar 168, a lock portion 172 as an engaging portion is arranged near the vehicle front side end portion, and a lock portion 173 as an engaging portion is arranged near the vehicle rear side end portion. Notches 174 for locking are formed at the vehicle-side ends of the locking portions 172 and 173, respectively.

The slide groove 160 of the seat frame 134 and the lock bar 168 of the lock plate 164 constitute a slide support means.

On the other hand, a slide lock portion 176 is provided on the vehicle rear side of a substantially middle portion in the longitudinal direction of the connecting plate 166. The slide lock portion 176 is provided with a rotation pin 180 protruding leftward in a vehicle traveling direction from a support member 178 attached to the connecting plate 166, and the rotation lever 180 is attached to the rotation lever 180.
Is rotatably supported. Lock lever 182
Are formed in a substantially L shape, one piece 184 extends downward, and the other piece 186 extends rearward of the vehicle. Further, a claw piece 188 protruding upward is formed at the tip of the other piece 186. The lock lever 182 is urged by a spring (not shown) in the direction of arrow UC in FIG. 3 so that the claw piece 188 is caught by the claw portion 148.

Further, the front cover 1 is attached to the vehicle front end of the connecting plate 166.
One end of 90 is stuck. The longitudinal middle portion of the front cover 190 is wound around the vehicle front end of the bottom portion 36 of the seat frame 32, and the other end is one of the locking means 19
4 is stuck. On the other hand, the other side 196 of the locking means is fixed to the lower surface of the bottom portion 36, whereby the other end portion of the front cover 190 is detachably attached to the bottom portion 36. On one side 194 and the other side 196 of this locking means, a large number of projections are provided upright from one side, and the bent end portions of these projections are locked to a large number of loops provided on the other side (as an example, the product name Velcro tape ) Is applicable.

The lock bar 168 described above is supported by the lock guide 192 provided on the seat frame 32.

A pair of the lock guides 192 are provided on the side surface of the side plate 38 so as to face each other.

As shown in FIG. 3, the lock guide 192 is a block whose cross section perpendicular to the vehicle width direction is formed in a substantially parallelogram shape, and the bottom surface side is positioned on the vehicle front side from the top surface side.

The lock guide 192 includes lock parts of the lock plate 164.
172, 173 enter, lock groove 200A as an engaged portion,
200B, lock grooves 202A and 202B, and lock grooves 204A and 204B are provided, and the lock grooves 200A and 200B, the lock grooves 202A and 202B, and the lock grooves 204A and 204B are adjacently formed in order from the lower side. The vertical width dimension of these lock grooves is slightly larger than the vertical width dimension of the lock portions 172, 173, and the lock portions 172, 173 move vertically by a predetermined dimension in these lock grooves. You can do it.

Further, the lock grooves 202A, 202B are arranged so as to be displaced from the lock grooves 200A, 200B by a predetermined dimension toward the vehicle rear side, and the lock grooves 204A, 204B are similarly arranged by a predetermined dimension toward the vehicle rear side from the lock grooves 202A, 202B. They are arranged in a staggered manner.

Further, the lock grooves 202A, 204A, and 204A are open on the front side of the vehicle, and the lock portion 172 extends from the front side of the vehicle to the lock grooves 202A.
It can be inserted into any one of A, 204A, and 204A. Further, on the vehicle front side of the lock grooves 202B, 204B, 206B, a communication groove 212 is formed as a guide portion that is connected to these lock grooves 202B, 204B, 206B.
04B and 206B are vertically communicated with each other by a communication groove 212. As a result, the lock portion 173 can be inserted into any one of the lock grooves 202B, 204B, 206B via the communication groove 212. As a result, the lock parts 172 and 173 can be freely inserted into and extracted from these lock grooves, and can be freely moved in the vertical direction to change the relative position with respect to the bottom part 36. That is, when the lock parts 172 and 173 are inserted into these lock grooves, the relative position to the bottom part 36 is fixed.

Further, a blocking wall 216 is provided in the vicinity of the end portion 214 of these lock grooves on the side opposite to the side plate 38 of these lock grooves, and the lock portions 172 and 173 of the lock plate 164 are fitted into the lock grooves. At this time, the notch 174 is fitted into the blocking wall 216 to block the movement in the vehicle width direction (arrow R and L directions).

Next, the operation of this embodiment configured as described above will be described.

When the child seat 10 is attached to the vehicle seat 12, the upper fixing bracket 66 is first attached to the upper fixing portion 14.

The upper fixing metal fitting 66 is taken out from the storage portion 82 of the seat frame 32 (direction of arrow C), and as shown in FIG.
Is rotated downward (in the direction of arrow B) so that the tip of the shaft 24 faces downward. Then, the sub-arm 224 is rotated (in the direction of arrow A) so that the mounting hole 20 of the upper fixing portion 14 corresponds to the tip of the shaft 24.

Then, by pushing the shaft 24 into the mounting hole 20 of the seat back 18, the convex portion 76 of the shaft 24 is pressed by the opening edge of the mounting hole 20 and the tip of the shaft 24 elastically deforms toward the axis, and the tip of the shaft 24. The part is inserted into the mounting hole 20. When the tip of the shaft 24 reaches the recess 22 of the mounting hole 20, the tip of the shaft 24 returns to its original position due to the elastic force,
The projection 76 of the shaft 24 is engaged with and held by the recess 22 of the mounting hole 20. As a result, the upper fixing member 66 is attached to the upper fixing portion 14, and the shaft 24 does not accidentally come out of the attaching hole 20. Therefore, the upper portion of the child seat 10 is securely supported by the seat back 18.

Next, the lower fixing member 68 is attached to the lower fixing portion 16 while rotating the seat frame 32 around the support shaft 75. First, hold the tip of the slide lever 106 by hand and
The lower fixing member 68 is slid in the direction opposite to the tip end portion thereof against the urging force of. This causes the tip 1 of the lock pin 102 to
04 separates from the notch 100 in the tip 98. Maintaining this state and inserting the tip into the rectangular opening 26 of the seat back 18,
The slide hook 94 urged by the compression coil spring 96 loses the insertion force and is pushed inward of the slide hole 88, and the fixed bar 28 enters the notch 86. After the fixing bar 28 has entered the notch 86, the tip end 98 of the slide hook 94 again projects to the outside of the slide hole 88 by the urging force of the compression coil spring 96. If the slide lever 106 is released, the lock pin 102 moves toward the tip of the lower fixing member 68 by the urging force of the slide lever 103, the tip 104 enters the notch 100, and the slide hook 94 is held. Therefore, in this state, the fixed bar 28 is attached to the tip 98 and the notch of the slide hook 94.
The fixing bar 28 is prevented from moving in the radial direction by 86, so that the lower fixing bracket 68 does not come off from the fixing bar 28. Therefore, the lower portion of the child seat 10 is reliably supported by the seat back 18.

In this way, this child seat 10 is a simple operation in which the shaft 24 is inserted into the mounting hole 20 of the seat back 18, the lower fixing bracket 68 is inserted into the rectangular opening 26 of the seat back 18, and the fixing bar 28 is attached. It can be securely attached to the seat back 18.

FIG. 10 also shows the seat cushion 132 in a state where the lock portions 172 and 173 of the frame 164 are fitted in the lock grooves 204A and 204B of the lock guide 192.

Here, when the child occupant has a large physique and the head protrudes above the head dress 40 and cannot be properly placed on the head dress 40, the height position of the seat cushion 132 is adjusted downward. In this case, as shown in FIG. 11, one of the locking means 194 of the front cover 190 is connected to the other of the locking means of the bottom portion 36.
Remove from 196 and lift the front cover 190 upward. Next, by pulling one piece 184 of the lock lever 182 toward the front side of the vehicle (direction of arrow F in FIG. 11), the lock lever 182 resists the urging force of a spring (not shown) of the slide lock portion 176 and moves to the 11th position.
The claw piece 188 is separated from the claw portion 148 by rotating in the clockwise direction in the drawing. Further, the state in which the claw piece 188 is separated from the claw portion 148 is maintained, and the lock plate 164 is pulled toward the vehicle front side. As a result, the lock plate 164 slides in the slide groove 160 of the vertical plate 150, and the lock portions 172 and 173 are pulled out from the lock grooves 204A and 204B.

Here, the seat cushion 132 is a torsion coil spring 130.
Since it is biased upward by the torsion coil spring
The seat cushion 132 is pushed downward against the urging force of the 130. As a result, the seat cushion 132 is supported by the vehicle seat 12 and is moved downward and forward of the vehicle. Next, the lock portions 172 and 173 are the lock grooves 202A,
Once moved to the front side of the 202B vehicle, the lock plate 164
Is moved to the rear side of the vehicle (direction of arrow B in FIG. 11) to push the lock parts 172 and 173 inward of the lock grooves 202A and 202B to bring the lock parts 172 and 173 into contact with the terminal end part 214.

Here, by returning the lock lever 182 to the original position, the claw piece 188 abuts on the vehicle rear side of the claw portion 148, whereby the movement of the lock plate 164 to the vehicle front side is blocked, and the lock portions 172 and 173 are Securely retained in the lock grooves 202A, 202B. Further, since the lock lever 182 is biased by the spring, the claw piece 188 does not inadvertently separate from the claw portion 148. This ensures that the sheet cushion 132 is supported by the lock guide 192. Further, since the cutout portions 174 of the lock portions 172 and 173 are fitted into the blocking wall 216, the blocking wall 216 is blocked from moving in the vehicle width direction.
That is, the side plate 3 to which the lock guide 192 is attached
This can prevent the deformation of 8 in the vehicle width direction.

Further, since the seat cushion 132 is biased upward by the torsion coil spring 130, the lock portions 172 and 173 are pressed against the upper surfaces of the lock grooves 202A and 202B. Further, in this state, a gap of a predetermined size is formed between the lower surfaces of the lock portions 172 and 173 and the lower surfaces of the lock grooves 202A and 202B, so that the gap and the biasing force of the torsion coil spring 130 cause downward movement of the seat cushion 132. Can soften the impact on.

In this way, the seat cushion 132 is moved downward and away from the headrest 40, so that the head of the child occupant can be placed at an appropriate position of the headrest 40. In this case, the head of the child occupant can contact the energy absorbing material 42 of the headrest 40, so that the head can be appropriately protected in an emergency.

Here, if the downward movement distance of the seat cushion 132 is still insufficient, the lock plate 164 is similarly processed.
Is pulled out, the seat cushion 132 is moved downward, and the lock portions 172 and 173 are inserted into the lock grooves 200A and 200B. As a result, the seat cushion 132 is further moved in a direction away from the headrest 40, and the head of the child occupant can be arranged at an appropriate position of the headrest 40.

On the contrary, when a child passenger having a small size is seated on the child seat 10 and the head is located below the head restraint 40, the lock plate 164 is pulled out and the seat cushion 132 is moved upward. Then, the lock portions 172 and 173 are inserted into the lock grooves 202A and 202B. As a result, the seat cushion 132 is moved in a direction approaching the headrest 40, and the head of the child occupant can be arranged at an appropriate position of the headrest 40.

In this way, when the position of the seat cushion 132 is adjusted to a position where the head of the child occupant can be properly arranged on the headrest 40, one of the locking means 194 of the front cover 190 and the other of the locking means of the bottom portion 36 is adjusted. Attach to 196. As a result, the lower interior of the sheet cushion 132 can be covered. Further, since a part 58 of the back plate cover 56 is urged by the tension spring 64 to be pulled, it is held to the vehicle rear side of the seat cushion 132 without slack.

Next, by mounting the shoulder webbing 48 on the upper body of the child occupant and engaging the tongue plate 52 with the buckle device 54, the child occupant can be appropriately placed on the child seat 10 and supported.

As described above, even when a child occupant having a different physique is seated, the head of the child occupant can be positioned at an appropriate position of the head restraint 40 by adjusting the seat cushion 132 in the vertical direction. The head can be optimally supported.

Therefore, the height position of the line of sight of the child occupant can be maintained at a fixed position, and a good visual field of the child occupant can be obtained.

Particularly in this embodiment, the seat frame 32 is a vehicle seat.
Since it is mounted away from the 12 seat cushions, the mounting angle to the vehicle body can be changed by following the reclining action of the seat back 18.

Further, when the upper fixing metal fitting 66 and the lower fixing metal fitting 68 are not used after being removed from the seat back 18 of the child seat 10, the upper fixing metal fitting 66 is stored in the storage portion 82, and the lower fixing metal fitting 68 is stored in the storage groove 110. Store.

If you want to store the upper fixing bracket 66,
By rotating 4 toward each other, the 12th
As shown in the figure, the sub-arm 224 can be stored under the connecting plate 72, and further, by rotating the tip portions of the shafts 24 in the direction away from each other, the shafts 24 can be moved along the longitudinal direction of the connecting plate 72 as shown in FIG. It can be stored below the connecting plate 72. By rotating the rotating frame 70 toward the back plate portion 34 in this state, the upper fixing bracket 66 can be stored in the storing portion 82 as shown by an imaginary line in FIG.

On the other hand, when housing the lower fixing bracket 68, the lower fixing bracket 68 can be housed in the storage groove 110 by rotating the lower fixing bracket 68 in a direction passing through the lower side of the seat frame 32.

In this embodiment, the lock guide 192 and the lock groove 200
A, 200B, 202A, 202B, 204A, 204B are provided to adjust vertically in three steps, but the configuration is not limited to this, and four lock grooves are provided vertically to further increase the adjustment range. Also good.

Further, in the present embodiment, one end of the crotch belt 142 is locked to the locking portion 144 of the seat frame 32, but the present invention is not limited to this, and one end of the crotch belt 142 may be locked to the upper surface of the bottom portion 36. Good.

Further, in the present embodiment, the shaft 24 is configured to be inserted into the mounting hole 20 of the seat back 18, but not limited to this, the head dress 250 detachably attached to the seat back 18 is removed as shown in FIG. 14, and the seat back 18 is removed. The shaft 24 may be inserted into the mounting hole 252 of the formed head dress 250.

Further, in this embodiment, the lock guide of the seat frame 32 is
192 lock grooves 200A, 200B, lock grooves 202A, 202B, and lock grooves 204A, 204B are provided, and the seat bar frame 182 of the seat cushion 132 is provided with the lock bar 182. It suffices to provide an engaged portion to the seat cushion 132 and an engaging portion to the seat cushion 132, and to provide a plurality of protrusions adjacent to the lock guide 192 in the vertical direction,
A recess may be provided in the seat cushion 132 so as to engage with the protrusion. Even in this case, the seat cushion 132 can adjust the vertical position with respect to the seat frame 32.

Further, in the present invention, it suffices that the seat cushion can be moved in parallel in the vertical direction to change the relative position with respect to the frame, and the configuration of the present invention is not limited to the above embodiment.

[Effect of device]

As described above, the child seat according to claim (1) has an excellent effect that the child occupant can be surely supported at a predetermined position and a good view of the child occupant can be obtained.

The child seat according to claim (2) has an excellent effect that it can be surely attached to the seat back of the vehicle seat by a simple operation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a child seat and a vehicle seat according to the present invention, and FIG. 2 is a top fixing portion 14 shown in FIG.
II-II line sectional view, FIG. 3 is an exploded perspective view showing a main part of the child seat shown in FIG. 1, and FIG. 4 is a IV-IV line sectional view of the headless 40 shown in FIG. The figure is an exploded perspective view showing the upper fixing bracket 66 shown in FIG. 1, FIG. 6 is a sectional view taken along the line VI-VI of the shaft 24 shown in FIG. 1, and FIG. 7 is a child's figure shown in FIG. FIG. 8 is a side view showing a state in which the seat is attached to a vehicle seat, FIG. 8 is a sectional view taken along line VIII-VIII of the lower fixing metal fitting shown in FIG. 1, and FIG. 9 is an upper fixing metal fitting 66 shown in FIG. FIG. 10 is a cross-sectional view of the child seat shown in FIG. 1, and FIG. 11 is a lock plate 164 of the child seat shown in FIG. 10 is a state diagram corresponding to FIG. 10 showing a state in which the sub-arm 224 is retracted to the upper fixing bracket 66 shown in FIG. 5, and FIG. FIG. 12 is a perspective view showing a storage state of the shaft 24 shown in FIG. 12, and FIG. 14 is a perspective view showing a second embodiment of the present invention. 10 …… Child seat, 18 …… Seat back, 20 …… Mounting hole (first hole), 24 …… Shaft (upper mounting shaft), 26 …… Rectangular hole (second hole), 28 …… Fixed Bar (strength member), 32 ... Seat frame, 68 ... Lower fixing metal fitting (lower connecting means), 122 ... Link, (Translating means), 132 ... Seat cushion, 172, 173 ... Lock part ( Engagement part), 160 ... slide groove (slide support means), 168 ... lock bar (slide support means), 200
A, 200B, 202A, 202B, 204A, 204B ... Lock groove (engaged part).

Claims (2)

(57) [Scope of utility model registration request] 1. A child seat comprising a seat frame having a seat back and a headrest, and a seat cushion movably supported by the seat frame, wherein the seat cushion is moved in parallel in the vertical direction. Of the plurality of engaged portions, a parallel moving means that can change the relative position of the cushion with respect to the headrest, a plurality of engaged portions that are provided in the seat frame and that are adjacent in the height direction, An engaging portion selectively engaged with one of the plurality of engaged portions and the plurality of engaged portions in the vertical direction, and the engaging portion disengaged from the engaged portion has a height A guide portion that is movably guided in a direction, the seat cushion is provided, the engagement portion slidably supports between the engaged portion and the guide portion, and the engagement portion is Engage in the engaged part Child seat which is characterized by when the can having a slide supporting means for supporting the seat frame through the sheet cushion the engagement portion and the engaged portion. 2. A seat mounting structure for a child supported by a vehicle seat back, which is connected to a strength member of the vehicle seat back and is formed above the vehicle seat back and extends in the vertical direction of the vehicle seat back. 1 is inserted from the front of the vehicle into a second hole located below the first hole provided in the vehicle seat back, and is connected to the strength member of the seat back. A child seat mounting structure comprising: a lower connecting means.