JPH07117536A - Infant seat - Google Patents

Abstract

PURPOSE:To provide an infant seat which can be easily fixed to a seat of an automobile or the like. CONSTITUTION:A seat body consists of a seat part 15, a back part 16 integrated with the rear side of the seat part 15, and support parts 17 integrated with the right and left sides of the seat part 15 and the back part 16. Hooks provided with a projecting part 23 which are projecting from the outside surface of the support parts 17 and a belt engaging part which is extended upward from the projecting part 23 and formed to have a space (g) from the outside surface of the supports parts 17 are mounted on the support parts 17 on the right and left sides. For example, an infant seat can be fixed to an automobile seat by engaging the seat belt of the automobile seat to these hooks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infant seat for mounting an infant on an automobile, and more particularly to an infant seat which can be easily attached to an automobile seat.

[0002]

2. Description of the Related Art Generally, a car seat is designed based on an adult's physique, and when a small infant sits down, the position of the body is lowered and the seat belt is used to hold the body firmly. It was difficult to do. Therefore, an auxiliary seat (child seat) is placed on a normal seat so that the infant can firmly hold his / her body when sitting.

Further, in recent years, with the spread of automobiles, there are increasing opportunities for children to go out and go out. When the infant is younger, he / she rides the infant in a stroller when moving out of the automobile. Therefore, when going out with an infant,
You need to prepare both a child seat and a stroller. Then, it is necessary to secure a considerably large space for mounting the stroller in the passenger compartment, and there is a problem that a space for loading luggage and the like becomes narrow.

In order to eliminate this inconvenience, there has been proposed a safety seat for infants having the functions of both a child seat and a stroller. In this infant safety seat, a base plate is attached to the base end of the seat body, and a front leg provided with front wheels and a rear leg provided with rear wheels are rotatably provided on the base plate. That is, this infant safety seat is used as a stroller when the front and rear legs are erected with respect to the seat, and as a child seat when the front and rear legs are folded. The child safety seat thus configured is placed and fixed on the seat of the automobile when the child safety seat is in the state of the child seat.

[0005]

However, in order to fix the infant safety seat on the seat of the automobile, various parts are required, the number of parts increases, the structure becomes complicated, and the seat is attached. It takes time and effort.

In order to solve the above problems, it is an object of the present invention to provide a baby seat which can be easily fixed to a seat of an automobile or the like.

[0007]

In order to solve the above problems, the invention according to claim 1 is directed to a seat portion, a back portion integrally formed on the rear side of the seat portion, and the seat portion and the back portion. In a baby seat composed of support parts integrally formed on both left and right sides, in the support parts on both left and right sides, a projecting part projecting from an outer side surface of the support part, and extending upward from the projecting part, the support is provided. The gist of the present invention is to attach a hook member having an outer surface of the portion and a belt engaging portion formed so as to have a gap.

According to a second aspect of the present invention, in the first aspect of the invention, the hook member is provided on an outer surface of the support portion corresponding to the seat portion and an outer surface of the support portion corresponding to the back portion. That is the summary.

A third aspect of the present invention is characterized in that a belt support member is provided on an upper portion of the back portion so as to have a horizontal gap in the left-right direction of the infant seat.

[0010]

Therefore, according to the first aspect of the invention, the seat belt of the automobile seat on which the infant seat is placed is engaged with the belt engaging portion of the hook member attached to the infant seat. By doing so, the infant seat is fixed to the automobile seat.

According to the invention of claim 2, claim 1
In the invention, since the hook member is provided on the outer side surface of the support portion corresponding to the seat portion, the infant seat is fixed to the automobile seat in a state of facing the automobile seat. Further, since the hook member is provided on the outer surface of the support portion corresponding to the back portion, the infant seat is fixed to the automobile seat with the back portion of the automobile seat and the back portion of the infant seat overlapped with each other. It

According to the invention of claim 3, claim 1
In the invention described in (1), since the upper portion of the back is provided with the belt supporting member formed so as to have a horizontal gap in the left-right direction, the seat belt of the automobile seat is provided at three points on the infant seat. When engaged, the infant seat is more stably fixed to the vehicle seat.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. As shown in FIGS. 1 and 2, a baby safety seat 1 as a baby seat according to the present embodiment has a resin seat body 3 provided on a resin base body 2.
And a leg portion 4 provided on the base body 2.

First, the structure of the seat body 3 provided on the base body 2 will be described. As shown in FIGS. 1 and 11, the seat body 3 is configured by integrally forming a seat portion 5 and a back portion 6 provided on the rear side of the seat portion 5 in a curved shape. Support portions 7 are integrally formed so as to face upward on the left and right sides of the seat portion 5 and to face the front side of the seat body 3 on the left and right sides of the back portion 6.
The support portion 7 is adapted to cover a front caster 106 and a rear caster 111 described later.

A known child belt connecting device 8 is provided at the center of the seat portion 5 of the seat body 3. A sub belt 9 is provided near the boundary between the seat 5 and the support 7, and the sub belt 9 is connected to the child belt connecting device 8. Also, the seat 5
A belt device having a well-known emergency lock retracting mechanism (not shown) is provided on the back surface of the seat belt.
It is connected to the child belt connecting device 8 through the belt passing hole 11.

The sub-belt 9 and the main belt 10 can be detached from the child belt connecting device 8 by operating a press switch (not shown) provided in the child belt connecting device 8. Further, three belt through holes 11 through which the main belt 10 is inserted are formed in the right and left vertical directions of the back portion 6, respectively. Further, a cloth-made cover 12 having a cushioning property is attached to the surface of the seat body 3.

Further, as shown in FIGS. 1, 5, 9 and 11, the seat main body 3 which protrudes to the back side on the left and right sides of the seat portion 5 and to the rear side on the left and right sides of the back portion 6 is reinforced. The projecting portion 13 that also serves as a unit is integrally formed. An arrangement space 14 is formed between the pair of protrusions 13 that protrude to the back side of the seat 5. Further, a bulging portion 5a projecting to the back side is formed at the center of the seat portion 5 on the front side, and a mounting bracket (not shown) of the belt connecting device 8 is housed in the bulging portion 5a. The device 8 is attached and fixed to the seat 5.

As shown in FIG. 11, a pair of connecting pieces 15 having a substantially triangular shape are integrally formed on the upper surface of the support portion 7 formed on both the left and right sides of the back portion 6. A pair of insertion holes 16 are formed on the upper surface of the support portion 7 formed on both the left and right sides of the seat portion 5. Then, the pair of insertion holes 16
A small hole 17 is formed between them. Also, body sheet 3
A pair of pipe insertion holes 18 are formed in the upper part of the back portion 6 in the.

A handle 19 bent in a U shape as shown in FIG. 12 is inserted into the pipe insertion hole 18, and the back portion 6 is formed.
Is projected to the rear side of. The handle 19 is on the back 6
It is attached to the upper portion of the back portion 6 by a handle attachment bracket 19a provided on the surface side of the. Then, the handle 19 slides along the inclination of the back portion 6, projects above the back portion 6 or sinks into the rear side of the back portion 6.

Further, as shown in FIG. 11, a protruding portion 20 as a belt supporting member is formed in the upper portion of the back portion 6 and has a rectangular shape protruding toward the rear side. A pair of through grooves 23a and 23b that are parallel to each other are formed on the back plate 21 and the bottom plate 22 that form the protruding portion 20, respectively. or,
A pair of through grooves 23 extending from the back plate 21 to the bottom plate 22.
A connection groove 24 is formed so as to connect substantially the centers of a and 23b. The through grooves 23a and 23b and the connection groove 24
Thus, a pair of belt support pieces 25a and 25b are formed on the back plate 21 and the bottom plate 22 of the protrusion 20.
Further, the belt supporting pieces 25a and 25b are integrally formed with a plurality of tooth portions 26 projecting into the through groove 23b.

Further, as shown in FIGS. 13 and 20, a reinforcing plate 27 is attached and fixed to the bottom plate 22 and the pair of belt supporting pieces 25a and 25b. Reinforcement plate 27
A guide groove 28, which is aligned with the through groove 23b and the connection groove 24, is formed in the. Therefore, the pair of belt support pieces 2
5 a and 25 b are reinforced by a reinforcing plate 27.

As shown in FIGS. 11 and 12, mounting pedestals 30 are formed in the protrusions 13 on the left and right sides of the lower portion of the back portion 6. Further, a hook insertion hole 31 is formed on the side surface of the support portion 7 adjacent to the mounting base 30. Similarly, mounting pedestals 32 are formed on the left and right sides of the seat portion 5 on the front side. Further, a hook insertion hole 33 is formed on the side surface of the support portion 7 adjacent to the mounting base 32.

A hook 34 as a metal hook member is disposed on the mounting bases 30 and 32 from the outside of the seat body 3 through the hook insertion holes 31 and 33, and the hook 34 is attached by a screw 35 to the mounting base 30. , 32 are attached and fixed. As shown in FIG. 14, the hook 34 includes an attachment portion 36 attached to the attachment pedestals 30 and 32, and a belt engagement portion 37 protruding to the outer side surface of the support portion 7 through the hook insertion holes 31 and 33. Has been done. Further, a predetermined gap g is formed between the belt engaging portion 37 and the outer side surface of the support portion 7. The hook 34 is attached and fixed to the attachment pedestals 30 and 32 so that the upper side of the gap g is always open. Further, a semi-arcuate belt engaging protrusion 38 that protrudes toward the gap g is integrally formed at the tip of the belt engaging portion 37.

As shown in FIG. 1, FIG. 11, FIG. 12, FIG. 16, and FIG. 17, a pair of insertion holes 16 formed on the upper surface of the support portion 7 are formed with a curved resin side guard 40.
A pair of guard connection pieces 41 formed at one end of the is inserted. This guard connecting piece 41 is supported by a tapping screw 42 which is screwed from the side of the support portion 7 into the support portion 7.
It is connected to the. Therefore, the side guard 40 is supported rotatably around the tapping screw 42.

As shown in FIGS. 15 and 18, a wall member 40a is integrally formed inside the other end of the side guard 40 in the width direction of the side guard 40. A gap absorbing wall 40b orthogonal to the wall member 40a is integrally formed on the wall member 40a and the side guard 40 on the other end side of the side guard 40.

Further, as shown in FIGS. 15 and 18, a pair of connecting pieces 15 formed on the support portion 7 is inserted into the other end of the side guard 40. And a pair of connection pieces 1
The gap absorbing wall 40b is arranged between the two.

The side guard 40 is inserted from the outer side portion of the side guard 40 into the guard hole 43 of the side guard 40, the connection hole 15a of the pair of connection pieces 15 and the connection hole 40c of the gap absorbing wall 40b. Four
0 is connected to the connection piece 15.

A slit 45 is formed in the guard connection pin 44.
Is formed, and an elastic piece 46 is formed at the tip thereof. A locking claw 47 is formed on the outer peripheral surface of the distal end of the elastic piece 46, and the locking claw 47 engages with the outer peripheral edge of the guard hole 43 of the side guard 40. Therefore, the guard connection pin 44 does not easily come out.

Further, a claw accommodating recess 40d is formed on the outer peripheral edge of the guard hole 43 inside the side guard 40, and the locking claw 47 is arranged. Therefore, the guard connection pin 4 on the side where the locking claw 47 is formed
4 does not project to the inside of the side guard 40, that is, the seat portion 5 side. Further, the locking claw 47 and the claw storage recess 40
An insertion space portion into which a fingertip is inserted is formed between the insertion space portion and d.

Further, a thickness t1 is formed on the locking claw 47, and this thickness t1 depends on the dimension t2 between the side guard 40 and the connecting piece 15 and the dimension t3 between the gap absorbing wall 40b and the connecting piece 15. It is formed to be large.

Further, a fingertip is put in the insertion space of the claw housing recess 40, and the elastic piece 46 is operated to operate the locking claw 47 and the guard hole 43.
When the engagement with the outer peripheral edge of the guard connecting pin 44 is released, the guard connecting pin 44 is connected to the guard hole 43, the connecting hole 40c, and the connecting hole 15.
It can be pulled out from a.

At this time, the thickness t1 of the locking claw 47 is the dimension t.
Since it is formed larger than 2 and t3, it is formed between the side guard 40 and the connection piece 15 and between the gap absorption wall 40b and the connection piece 1.
The locking claw 47 is prevented from getting into the gap with 5. Therefore, the guard connection pin 44 can be reliably pulled out or inserted to reliably connect the side guard 40 and the connection piece 15. Therefore, as shown in FIG. 21, the side guard 40 is configured to rotate around the tapping screw 42.

Further, holes 48 for passing the side guard 40, the child belt connecting device 8, the sub-belt 9, and the main belt 10 are formed in each portion of the cover 12.
For convenience of explanation, FIG. 15 shows a hole 48 for inserting the connecting piece 15. The inner edge of the hole 48 is folded inward and sewn with a sewing thread 49. Therefore, the fibers of the cover 12 are prevented from fraying.

As shown in FIGS. 16, 17 and 19, the side guard 40 is formed in a hollow shape having a square cross section, and an opening 50 is formed in the lower portion thereof. Further, an L-shaped lock release lever 51 is provided inside the substantially center of the side guard 40 by means of a support shaft 52.
It is rotatably supported with respect to. Then, one end of the lock release lever 51 is exposed downward through the opening 50 of the side guard 40.

A front guard insertion hole 53 is formed on the upper surface of the side guard 40 on one end side. And
As shown in FIG. 19, in the side guard 40, an engagement release guide piece 54 which has elasticity integrally with the outer peripheral edge of the front guard insertion hole 53 is formed. Further, the engaging claw 5 is provided on the side surface of the guide piece 54 on the side of the front guard insertion hole 53.
5 are integrally formed.

In the front guard insertion hole 53 of the side guard 40, guard connecting pieces 57 integrally formed at both ends of a curved front guard 56 are inserted.
The guard connecting piece 57 is provided with a substantially square-shaped claw engaging hole 58. The claw engaging hole 58 of the guard connecting piece 57 and the connecting claw 55 of the engagement releasing guide piece 54 are engaged with each other, and the front guard 56 is connected and fixed to the pair of side guards 40.

Further, the engagement release guide piece 54 in the side guard 40 is bent in the direction of the arrow A so that the engagement claw 55 and the claw engagement hole 5 are formed.
When the engagement with 8 is released, the front guard 56 can be removed from the side guard 40.

As shown in FIG. 12, both ends of a bent reclining rod 60 are inserted into both inner side portions of the projecting portion 13 in the arrangement space portion 14 on the back side of the seat portion 5. The reclining rod 60 is rotatably supported by the protrusion 13.
Further, the reclining rod 60 is connected to a coil spring 61 engaged with a side surface of the protruding portion 13 on the rear side of the reclining rod 60. Therefore, the reclining rod 60 is biased to rotate to the rear side.

Further, in the width direction of the seat body 3, the shaft portions 63 of the reclining operation lever 62 are inserted and supported rotatably on the left and right sides of the back surface of the bulging portion 5a. A locking hook 64 formed integrally with the operation lever 62 is hooked on the reclining rod 60. Therefore, when the reclining operation lever 62 is operated to the front side of the seat body 3, the locking hook 64
The reclining rod 60 to the coil spring 6
The seat body 3 can be rotated to the front side against the urging force of 1.

The structure of the reclining operation lever 62, the reclining rod 60 and the coil spring 61 enables the base body 2 to perform a reclining operation capable of adjusting the angle of the seat body 3. .

Next, the structure of the base body 2 that supports the seat body 3 will be described. As shown in FIGS. 22 and 24, the base body 2 has a planar rectangular shape, and its longitudinal direction is aligned with the front and rear side directions of the seat body 3. Then, as shown in FIGS. 3 and 5, the base body 2 is disposed in the disposing space portion 14 formed between the projecting portions 13 formed in the seat body 3. Further, as shown in FIGS. 3, 5 and 22, the base body 2 is formed with a lightening hole 70 having a quadrangular shape in the thickness direction thereof. Frame 71, front frame 7
2 and a rear frame 73. The pair of lateral frames 71, the front frame 72, and the rear frame 73 are integrally formed.

As shown in FIG. 24, the pair of horizontal frames 71 are curved so that the rear side of the base body 2 is slightly rearward from the center. Therefore, the pair of horizontal frames 7
A storage space 74 is formed on the lower surface of 1. The pair of lateral frames 71, the front frame 72, and the rear frame 73 have a lightening structure in which the upper surfaces are opened.

Support pin insertion holes 75 are formed on the top side surfaces of the pair of horizontal frames 71. Then, as shown in FIG. 22, a support pin 76 is inserted into the support pin insertion hole 75 from the lightening hole 70 side, and the support pin 76 is a pin support hole formed on the inner side surface of the projecting portion 13 in the seat portion 5. It is inserted in 77. Therefore, the seat body 3 is rotatably supported by the support pin 76 with respect to the base body 2, and the angle of the seat body 3 can be adjusted.

A pair of slits 78 are formed in the support pin 76 in the axial direction thereof, and a pair of elastic pieces 79 are formed by the slits 78. An engaging claw 80 that laterally projects is integrally formed on the outer periphery of the tip of the elastic piece 79. The engagement claw 80 engages with the outer peripheral edge of the pin support hole 77 so that the support pin 76 does not come out of the pin support hole 77 and the support pin insertion hole 75.

As shown in FIGS. 22, 24 and 25, a rod locking piece 81 is formed so as to project upward in the horizontal frame 71 on the front side of the support pin insertion hole 75 so as to be adjacent to the lightening hole 70. Has been done. A plurality of (three in the present embodiment) rod engaging recesses 82 are formed on the front side of the rod locking piece 81.

In the rod engaging recess 82 of the rod locking piece 81, the reclining rod 60 is provided with the recoil rod 60.
It is fitted by the urging force of 1. Due to the engagement between the rod engaging recess 82 and the reclining rod 60, the seat body 3 is restricted so as not to be able to rotate about the support pin 76.

Then, as shown in FIG. 28, when the reclining operation lever 62 is rotated to the front side while resisting the biasing force of the coil spring 61, the reclining rod 60 is moved by the locking hook 64 of the reclining operation lever 62. Rotate to the front side. Therefore, the engagement between the reclining rod 60 and the rod engaging recess 82 is released. Therefore, the seat body 3 becomes rotatable about the support pin 76.

When the seat body 3 is rotated and the operation of the reclining operation lever 62 is released, the reclining rod 60 is slid along the front side portion of the rod locking piece 81 by the urging force of the coil spring 61. Move. Then, when the reclining rod 60 corresponds to the rod engaging recess 82, the reclining rod 60 and the rod engaging recess 82 are engaged by the biasing force of the coil spring 61, and the rotation of the seat body 3 is restricted.

In this embodiment, by rotating the seat body 3 with respect to the base body 2 about the support pins 76, the angle of the seat body 3 can be adjusted every 10 °. It has become.

As shown in FIGS. 22, 27 and 28, an extending member 83 orthogonal to the horizontal frame 71 is integrally formed on the outer side portion of the horizontal frame 71 corresponding to the rod locking piece 81. An inclined member 84 extending obliquely upward to the rear side is integrally formed at the tip of the extending member 83. Further, a cylindrical regulation pin 85 orthogonal to the oblique member 84 is integrally formed on the outer side surface of the distal end of the oblique member 84.

As shown in FIGS. 22 and 25, the horizontal frame 7
An arm storage portion 86 is formed on the rear side of 1.
In addition, arm lock accommodating portions 87 are formed on both left and right sides of the rear frame 73. The arm storage portion 86 and the arm lock storage portion 87 are partitioned by a partition wall 88.

As shown in FIGS. 22 and 29, a lock arm 89 is arranged in the arm storage portion 86. The lock arm 89 is connected to the support pin 76 and is rotatably supported about the support pin 76. or,
An arm lever 90 is integrally formed on the upper surface of the lock arm 89 corresponding to the support pin 76. One end of a wire 91 is connected to the arm lever 90. The wire 91 is introduced into the side guard 40 shown in FIG. 17 through a wire insertion hole (not shown) formed on the side surface of the support portion 7 and the small hole 17 shown in FIG. The other end of the wire 91 has the lock release lever 5
1 is connected to the other end.

As shown in FIG. 29, the lock arm 8
The leading end of 9 passes through the upper portion of the partition wall 88 and extends into the arm lock storage portion 87. Further, one end of a coil spring 92 is connected to the lower end of the lock arm 89 on the tip side,
The other end of the coil spring 92 is connected to the connection hole 93 of the horizontal frame 71 in the arm housing portion 86. Therefore, the lock arm 89 is biased clockwise by the coil spring 92 about the support pin 76. Therefore, the lower end surface of the lock arm 89 is always in contact with the partition wall 88.

At this time, as shown by the solid line in FIG.
A part of the other end of the lock release lever 51 provided on the side guard 40 projects from the lower surface of the side guard 40. Then, as shown by the chain double-dashed line in FIG. 17, when the other end of the lock release lever 51 protruding from the lower surface of the side guard 40 is pushed into the side guard 40, the wire 91 is inserted into the side guard 40. Be drawn in. Therefore, as shown in FIG. 30, the arm lever 90
Rotates around the support pin 76 in the counterclockwise direction, and the tip of the lock arm 89 is separated from the partition wall 88. Further, when the operation of the other end of the lock release lever 51 is released, the lock arm 89 and the arm lever 90 are rotated clockwise about the support pin 76 by the urging force of the coil spring 92, as shown in FIG. The lower surface of the tip end of the lock arm 89 contacts the partition wall 88.

As shown in FIGS. 23, 24, and 33, a semicircular arm reinforcing portion 95 having an open upper portion is provided on the outer side of the arm lock accommodating portion 87 formed on the left and right sides of the rear frame 73. Are integrally formed. A reinforcing rib 96 is integrally formed in the arm reinforcing portion 95. Further, as shown in FIG. 22, a rear frame blind cover 97 is formed on the upper surface of the rear frame 73 and the upper surface of the arm reinforcing portion 95 so as not to cover the upper portion of the arm lock housing portion 87. .

Then, as shown in FIG. 33, caster arm insertion holes 98 are formed in the arm reinforcing portion 95 and the rear frame blind cover 97 corresponding to the arm reinforcing portion 95. Similarly, caster arm insertion holes 99 are formed in the rear frame 73.

As shown in FIGS. 23, 25, 33 and 34, lightening recesses 100 are formed on the left and right sides of the front frame 72. A caster arm insertion hole 101 is formed in the front frame 72 corresponding to the lightening recessed portion 100. Further, a footrest 102 is integrally formed on the front side of the front frame 72. As shown in FIG. 3, a plurality of through holes 102a are formed in the footrest 102, and reinforcing ribs 102b are formed on both left and right sides of the footrest 102 in an oblique shape with respect to the front-rear direction. There is. That is, the footrest portion 102 is reinforced by the reinforcing ribs 102b, and when an infant or the like rests his / her foot on the footrest portion 102, water and mud adhered to the footrest portion 102 penetrate the through hole 102a.
It is supposed to fall from.

Then, as shown in FIGS. 25 and 26, a front frame blind cover 103 is provided on the front side upper surface of the front frame 72 so as to blind the upper surface of the lightening recessed portion 100. Further, as shown in FIGS. 22 and 24 to 26, a sheet receiving portion 104 having a triangular cross section in the width direction of the base body 2 is integrally formed on the upper surface of the front frame blind cover 103.

As shown in FIGS. 23, 33, and 34, one end of a front caster arm 105 curved in a substantially L shape is rotatably inserted into the caster arm insertion hole 101. This front caster arm 105
A front caster 106 is provided at the other end of the.

The front caster arms 105 inserted into the left and right pipe insertion holes 101 have both ends of an auxiliary pipe 107 having an outer diameter smaller than the inner diameter of the front caster arm 105. In addition, the auxiliary pipe 107
Is substantially the same as the width of the front frame 72 in the width direction.

Therefore, the end portion of the auxiliary pipe 107 and the end portion of the front caster arm 105 are overlapped with each other in the lightening recessed portion 100 of the front frame 72. Then, the recessed portion 10
In 0, the auxiliary pipe 107 and the front caster arm 105 are crimped by a pair of rivets 108. Therefore, the pair of front caster arms 10 provided on the left and right sides of the front frame 72 of the base body 2 are provided.
5 is integrally rotated by an auxiliary pipe 107.

Further, as shown in FIGS. 1 and 33, one end of a rear caster arm 110, which is curved in a substantially L shape, is rotatably inserted into the caster arm insertion holes 98 and 99. A rear caster 111 is provided at the other end of the rear caster arm 110. Further, as shown in FIG. 3, in the width direction of the base main body 2, the rear caster arm 110 is connected to the front caster arm 10.
It is attached to the base body 2 so as to project outward from the base plate 5.

The caster arm insertion holes 9 on both the left and right sides
In the rear caster arm 110 inserted into the No. 8 and 99, both ends of an auxiliary pipe 112 having an outer diameter smaller than the inner diameter of the rear caster arm 110 are inserted. The length of the auxiliary pipe 112 is substantially the same as the length of the rear frame 73 in the width direction. Therefore, the end portion of the auxiliary pipe 112 and the end portion of the rear caster arm 110 are connected to the arm lock storage portion 87
Have been polymerized in.

As shown in FIGS. 23, 29, and 33, a rear arm lock 113 is provided on the outer peripheral surface of the rear caster arm 110 in the arm lock storage portion 87. This rear arm lock 113, auxiliary pipe 1
12 and the rear caster arm 110 are a pair of rivets 1.
It is crimped by 14. Therefore, the pair of rear caster arms 1 provided on both left and right sides of the base body 2
10 and the pair of rear arm locks 113 are auxiliary pipes 1.
It is designed to rotate integrally with 12.

The rear arm lock 113 has an extension 1
15 is integrally formed. An arc-shaped push-up surface 116 is formed on the upper surface of the tip of the extending portion 115.
In addition, a linear contact surface 117 is formed on the lower surface of the tip of the extending portion 115.
Are formed. Then, when the rear caster arm 110 is rotated clockwise from the state of FIG. 29, the pushing-up surface 116 of the extending portion 115 causes the lower end surface of the lock arm 89 to resist the biasing force of the coil spring 92, as shown in FIG. While pushing up.

Further, when the rear caster arm 110 is rotated clockwise (on the front side) and the extending portion 115 is rotated to the tip end side of the lock arm 89 as shown in FIG. 31, the lock arm 89 is rotated by the coil spring. The urging force of 92 makes contact with the partition wall 88. Therefore, the tip of the lock arm 89 contacts the contact surface 117 of the extension 115. Therefore, since the lock arm 89 and the rear arm lock 113 are engaged with each other, the rear arm lock 1
13 rotates counterclockwise, that is, the rear caster arm 11
0 is restricted so as not to rotate to the rear side.

A restricting surface 118 is formed on the bottom surface of the arm lock accommodating portion 87 so that the contact surface 117 of the rear arm lock 113 is in contact therewith. When the contact surface 117 of the rear arm lock 113 and the restriction surface 118 are in contact with each other, the rear caster arm 110 is restricted so as not to rotate further in the counterclockwise direction (rear side). Further, rear caster arms 110 are regulated by the rear arm locks 113 provided on the left and right rear caster arms 110 so as not to move in the width direction of the base body 2.

If the lock release lever 51 is operated to the position shown by the chain double-dashed line in FIG. 17, the lock arm 8
Since 9 is in the state of FIG. 32, the engagement between the lock arm 89 and the rear arm lock 113 is released, and the rear caster arm 110 and the rear arm lock 113 can be rotated counterclockwise (rear side). Has become.

Next, the front caster arm 105
Also, by rotating the rear caster arm 110, the front caster 106 and the rear caster 111 are projected to the lower surface of the base body 2, or the traveling position where the front caster 106 and the rear caster 111 are projected above the lower surface of the base body 2, and the child safety seat is positioned. The configuration of the link mechanism that brings 1 into the stroller state or the child seat state will be described.

As shown in FIGS. 35 and 36, one end of an aluminum connecting rod 120 having a rectangular hollow shape is provided on the outer side of the center of the front caster arm 105. One end of the connecting rod 120 is supported by a shaft support pin 121, and the connecting rod 120 is connected to the front caster arm 10.
5 is rotatably supported. The connecting rod 120 is obliquely attached so as to face upward toward the rear side. Further, the connecting rod 120 connects the front straight portion 122, the rear straight portion 123 located outside the front straight portion 122 and parallel to the front straight portion 122, and the front straight portion 122 and the rear straight portion 123. And a slanted portion 124.

As shown in FIGS. 36, 38, and 39, a pair of arm support pieces 125 are formed at the tip of the rear-side linear portion 123 of the connecting rod 120. In addition, a rectangular window portion 126 is formed on the central upper surface of the rear-side linear portion 123.
Are formed. A lever arm 128 is rotatably supported by a lever support pin 127 at the base end of the rear-side linear portion 123.

A handle spring 129 for urging the lever arm 128 toward the front side of the seat body 3 is provided on the lever support pin 127 between the base end of the rear linear portion 123 and the lever arm 128. . The lever arm 128 is urged toward the front side of the seat body 3 by the urging force of the handle spring 129 to come into contact with the regulation pin 85, and its rotation is regulated. Therefore, the lever arm 128 is located on the left and right outer side portions of the center of the support portion 7 of the seat portion 5.

As shown in FIGS. 36 to 39, a lock sliding member 130 made of stainless steel or iron is slidably arranged in the rear straight portion 123. Lock sliding member 1
A slide guide groove 131 is formed at the base end of the base member 30 so that the base end side is opened in the longitudinal direction thereof, and the lever support pin 127 can be inserted into the slide guide groove 131. Further, the lever guide pin 12 is provided in the sliding guide groove 131.
An urging spring 132 that comes into contact with 7 is provided. Therefore, the lock sliding member 130 is always urged toward the tip side of the rear-side linear portion 123.

A notched recess 133 is formed in the upper portion of the tip of the lock sliding member 130 so as to face the window 126. A pressing surface 134 that is orthogonal to the longitudinal direction of the lock sliding member 130 is formed in the cutout recess 133. Further, an engagement notch 135 is formed on the lower surface of the tip of the lock sliding member 130. Further, at the tip of the lock sliding member 130, the push-down portion 1 is slanted downward toward the rear side.
36 is formed.

On the other hand, a lock member 140 made of stainless steel or iron is fixed to the inner side portion of the center of the rear caster arm 110 by a pair of rivets 141. The tip end side of the lock member 140 is formed so as to be obliquely raised toward the front side. Also, the lock member 140
Is formed so as to be inclined downward toward the front side. The tip portion thereof is arranged between the arm support pieces 125 of the rear-side straight portion 123 of the connecting rod 120. The tip end side of the lock member 140 is rotatably connected to the pair of arm support pieces 125 of the connecting rod 120 by a connecting support pin 142. The lock slide member 13 is attached to the tip of the connection support pin 142.
A locking protrusion 143 that engages with the engagement notch 135 formed at 0 is formed.

Further, a reinforcing auxiliary member 144 made of iron is arranged between the rear straight line portion 123 and the lock sliding member 130. The reinforcing auxiliary member 144 includes a pair of side plates 145,
It is composed of a rotation restricting plate 146 that connects a part of the lower parts of the pair of side plates 145. Then, the reinforcing auxiliary member 1
44 is supported and fixed by the connection support pin 142. The rotation restricting plate 146 is disposed at the base ends of the pair of arm lock supporting pieces 125, and the upper surface of the rear-side linear portion 123 and the upper surface of the rotating restricting plate 146 are flush with each other. The upper surface of the rotation restricting plate 146 contacts the locking projection 143 formed at the tip of the locking member 140.

On the upper surfaces of the pair of side plates 145 of the reinforcement assisting member 144 on the tip side, there are formed avoiding recesses 147 having an inverted trapezoidal shape that widens toward the upper surfaces of the pair of side plates 145. The avoiding recess 147 is substantially aligned with the notch recess 133 of the lock sliding member 130.

Further, the lock sliding member 130 is the biasing spring 13
The urging force of 2 slides to the front end side of the rear-side linear portion 123, and the pressing surface 134 formed in the notch recess 133 is exposed in the avoiding recess 147 formed in the pair of side plates 145. At this time, the engagement notch 135 of the lock sliding member 130 and the locking projection 143 of the lock member 140 are engaged.

Further, the front caster arm 105
The rear caster arm 110 and the rear caster arm 110 are connected by the connecting rod 120 and the lock member 140, and the front caster arm 10 is formed by forming the inclined portion 124 of the connecting rod 120.
5 and the rear caster arm 110 are absorbed in the difference in length in the width direction, so that they can be connected.

Further, the engaging rod 135 and the locking projection 143 are engaged with each other so that the connecting rod 120 and the locking member 14 are engaged.
0 is restricted so that it cannot rotate upward around the connection support pin 142. Also, the locking projection 14
Since 3 is in contact with the rotation restricting plate 146 of the reinforcing auxiliary member 144, the connecting rod 120 and the lock member 140 are restricted so that they cannot rotate downward about the connecting support pin 142.

A protective cover 150 made of resin is attached to the lock member 140. Further, a connection protection cover 151 made of resin is connected to a connection position where the connection rod 120 and the lock member 140 are connected by a connection support pin 142. A bulging portion 152 is formed on an upper portion of the coupling protection cover 151 so that the locking protrusion 143 of the locking member 140 does not interfere when the locking member 140 rotates about the coupling support pin 142.

Further, a lock release 153 is rotatably supported on the upper surface of the front side of the connection protection cover 151 by a release shaft 153a. The lower side of the lock release 153 is inserted into the rear linear portion 123 through a window 126 formed in the rear linear portion 123. The lower side of the lock release 153 is disposed in the cutout recess 133 of the lock sliding member 130.
Further, the lock release 153 has an engaging recess 154 that engages with the pressing surface 134 of the notch recess 133 formed at a right angle.
Are formed. Further, a pressing sliding surface 155 is formed on the upper side of the lock release 153.

Therefore, the lever arm 128 causes the regulating pin 8 to move.
5, the lock sliding member 130 slides toward the front end side of the rear-side linear portion 123 by the urging force of the urging spring 132, and the engagement notch portion 135 and the locking protrusion 143 engage with each other. . At this time, the pressing surface 1 of the lock sliding member 130
34 engages with the engaging recess 154 of the lock release 153, and the urging force of the urging spring 132 causes the rear linear portion 123 to move.
The lock sliding member 130 is regulated so as not to project from the tip of the.

The lever arm 128 has a base 156,
It is composed of an intermediate portion 157 that bends from the tip of the base portion 156 to the front side of the seat body 3, and a grip portion 158 that bends further from the tip of the intermediate portion 157 to the front side of the seat body 3. There is. Further, the lever arm 128 has a lightening structure with its rear side opened.

The base portion 15 of the lever arm 128
A rotation restricting portion 159 is formed substantially inside the center of 6. Further, inside the tip of the base portion 156 of the lever arm 128, the pressing sliding surface 15 of the lock release 153 is provided.
Sliding protrusions 160 that press 5 are formed.

Therefore, as shown in FIGS. 35, 37, and 39, the lever arm 128 is regulated by gripping between the grip portion 158 and the intermediate portion 157 from the state where the lever arm 128 is in contact with the regulation pin 85. It is rotated in the direction of separating from the pin 85 (rear side). Then, FIG. 40, FIG.
As shown in FIG.
Comes into contact with the upper surface of the connecting rod 120, and its rotation is restricted. On the other hand, the rotation of the lever arm 128 causes the sliding protrusion 160 to slide while pressing the pressing sliding surface 155 of the lock release 153.

Therefore, the lock release 153 rotates about the release shaft 153a. Then, the engaging recess 15
4 is configured to press the pressing surface 134 of the lock sliding member 130 while resisting the urging force of the urging spring 132.
By this pressing, the lock sliding member 130 slides on the base end side of the rear-side straight line portion 123 of the connecting rod 120.

When the lock sliding member 130 slides on the base end side of the rear-side linear portion 123 of the connecting rod 120, the engaging cutout portion 135 and the locking projection portion 14 of the locking member 140.
The engagement with 3 is released. In this state, the child safety seat 1 is lifted while holding the lever arm 128. Then, as shown in FIG. 42, the connecting rod 120 and the lock member 140 rotate around the connecting support pin 142 to perform a folding operation. Further, the front caster arm 105 is rotated toward the rear side of the seat portion 5 by the rotating operation of the connecting rod 120. Then, as shown in FIGS. 6, 9, and 10, the front caster 106 provided on the front caster arm 105 includes the lock member 140 and the support portion 7.
It is located between and. Also, the support section 7
Upper surface and one side surface of the connecting rod 120 and the locking member 140
The front cover 105 and the front caster 106 are covered with a protective cover 150 that protects the front caster. At this time, the front caster 106 does not project downward from the lower surface of the base body 2.

On the other hand, the rear caster arm 110 is rotated toward the front side of the seat portion 5 by the rotation operation of the lock member 140. At this time, as shown in FIG. 29 and FIG. 30, the rear arm lock 113 disposed in the arm lock storage portion 87 rotates to push up the pushing surface 11 of the extending portion 115.
6 pushes the lower end surface of the lock arm 89 upward against the biasing force of the spring 92. Therefore, the lock arm 89 is configured to rotate counterclockwise about the support pin 76.

Further, as shown in FIGS. 6, 9, and 10, the rear caster 11 provided on the rear caster arm 110 is used.
1 is located on the outer side of the front linear portion 122 of the connecting rod 120. At this time, the rear caster 111 does not project downward from the lower surface of the base body 2. Further, as shown in FIG. 42, the locking projection 143 of the locking member 140 is arranged inside the bulging portion 152 of the connection protection cover 151.

When the rear caster 111 is located on the outer side of the front linear portion 122, the rear arm lock 113 is attached to the tip of the lock arm 89, as shown in FIG.
The extension portion 115 of is located. Therefore, the lock arm 89 is rotated about the support pin 76 by the urging force of the coil spring 92, and the lock arm 8 is rotated.
The lower surface of the tip of 9 contacts the partition wall 88. Therefore, the extension portion 1 of the rear arm lock 113
The abutment surface 117 of 15 is adapted to engage with the tip of the rom arm 89. As a result, the rotation of the rear caster arm 110 is restricted so as not to project to the lower surface of the base body 2.

Therefore, the front casters 106 and the rear casters 111 are arranged at the accommodation positions on the left and right outer side portions of the support portion 7 so as not to project to the lower surface of the base body 2, and the infant safety seat 1 is changed from the stroller state to the child seat state. You can do it.
Further, the slanted portion 124 of the connecting rod 120 prevents the front caster 106 and the rear caster 111 from interfering with the front straight portion 122 and the rear straight portion 123 of the connecting rod 120. Therefore, the rear caster 111 is provided on the outer side portion of the front straight portion 122, and the rear straight portion 123 is provided.
The front caster 106 can be disposed on the inner side portion of the.

Also, the lever arm 12 in the state shown in FIG.
When the grip of No. 8 is released, as shown in FIGS. 43 and 44,
The lever arm 128 is rotated toward the front side of the seat body 3 by the biasing force of the handle spring 129 to come into contact with the regulation pin 85, and the rotation thereof is regulated. At this time, as shown in FIGS. 7, 9 and 10, the lever arm 128 is positioned above the rear caster 111. Therefore, the intermediate portion 157 and the grip portion 158 of the lever arm 128 cover the upper portion of the rear caster 111.

As shown in FIGS. 6 to 10, the side guard 40 provided on the support portion 7 of the seat body 3 in the state where the infant safety seat 1 is a child seat.
While holding, the other ends of the lock release levers 51 provided on the left and right side guards 40 are pressed into the side guard 40 as shown by the chain double-dashed line in FIG. By pressing the other end of the lock release lever 51, the lock release lever 51 is rotated and the wire 91 is drawn into the side guard 40 as shown by the arrow.

Then, as shown in FIG. 32, the wire 91
The lock arm 89 and the arm lever 90 provided on both the left and right sides of the base body 2 are rotated around the support pin 76 by the retracting operation of the. Therefore, the tip of the lock arm 89 is separated from the partition wall 88, and the engagement between the tip of the lock arm 89 and the contact surface 117 of the extension 115 of the rear arm lock 113 is released. .

In this state, when the side guard 40 is grasped and the infant safety seat 1 is lifted, the front caster arm 105 and the funnel caster 106 are rotated to the front side of the seat portion 5 by their own weights, and the base body 2 of the base body 2 is rotated. It projects to the lower surface. The front caster arm 105 and the front caster 106 are located at the traveling position. On the other hand, the rear caster arm 110 and the rear caster 111 are rotated to the rear side of the seat portion 5 by their own weights and similarly project to the lower surface of the base body 2. And. The rear caster arm 110 and the rear caster 111 are located at the traveling position.

The rotation of the front caster arm 105 and the rear caster arm 110 causes the connecting rod 12 to move.
0 and the lock member 140 rotate around the connection support pin 142 to perform a linear opening operation. Then, when the infant safety seat 1 is lowered onto the ground from the state where the front caster arm 105 and the rear caster arm 110 are hung, the front caster arm 105 and the rear caster arm 110 are spread apart in the direction in which they are separated from each other by their own weight. Has become.

At this time, the locking projection 143 of the lock member 140 disposed inside the bulging portion 152 of the connection protection cover 151 has the pressing portion 1 at the tip of the lock sliding member 130.
36 is pressed. Therefore, the lock sliding member 130 slides toward the base end side of the rear-side linear portion 123 while resisting the urging force of the urging spring 132.

When the locking projection 143 gets over the push-down portion 136 at the tip of the lock sliding member 130 and comes into contact with the rotation restricting plate 146 of the reinforcement assisting member 144, the biasing force of the biasing spring 132 causes the lock sliding. The moving member 130 is adapted to slide to the tip side of the rear-side linear portion 123. Therefore, the engagement notch 135 of the lock sliding member 130 and the locking projection 143 of the lock member 140 are engaged with each other.

Therefore, the front caster arm 105 and the rear caster arm 110 are regulated so as not to rotate downward about the connecting support pin 142. Therefore, the front caster 106 of the front caster arm 105 and the rear caster 111 of the rear caster arm 110 are fixed to a predetermined traveling position. Further, the extension portion 1 in the rear arm lock 113 fixedly attached to the rear caster arm 110
The contact surface 117 of 15 engages with the restriction surface 118 formed on the bottom surface of the arm lock housing 87, and the rotation of the rear caster arm 110 is restricted.

When the front caster arm 105 and the rear caster arm 110 are opened, the lever arm 128 abutting against the regulation pin 85 slides with respect to the regulation pin 85 while centering on the lever support pin 127. It is designed to rotate.

As a result, the infant safety seat 1 in the child seat state can be used as a stroller. Next, the configuration of the front caster 106 that constitutes the leg portion 4 will be described.

As shown in FIGS. 1 and 45, a caster top 165 forming the front caster 106 is attached and fixed to the lower end of the front caster arm 105.
The caster top 165 is the front caster arm 105.
Is curved so as to be positioned inside the central axis L1 of the seat, that is, on the rear side of the seat 5.

As shown in FIG. 46, a front caster bracket 166 formed in a semicircular plate shape is provided on the lower surface of the tip of the caster top 165. The front caster bracket 166 is formed with a guide shaft hole 167 that is orthogonal to the ground. The guide shaft hole 167 is formed on the front side of the vertical line L2 that divides the front caster bracket 166 into two substantially.
The guide shaft 168 is inserted therethrough. The guide shaft 168 inserted through the guide shaft hole 167 is inserted into the caster top 165, and the front caster bracket 1
66 is rotatably supported.

Further, a spring accommodating portion 169 having a lower opening is formed at substantially the center of the front caster bracket 166. The spring housing portion 16 is provided on the lower surface of the front caster bracket 166 on the rear side of the vertical line L2.
A receiving piece 170 protruding to the 9 side is formed. Furthermore,
A spring guide piece 171 that projects into the spring housing portion 169 is formed on the front caster bracket 166 above the spring housing portion 169. That is, the front caster 106 is provided so as to be rotatable.

Further, below the front caster bracket 166 on the front side of the vertical line L2, a suspension arm 172 arranged so as to straddle the front caster bracket 166 is rotatably supported by an arm support pin 173. There is. Therefore, the suspension arm 172 is adapted to rotate around the arm support pin 173.

The tip of the suspension arm 172 is engaged with the upper surface of the receiving piece 170. A spring guide piece 174 is formed on the upper surface of the suspension arm 172 so as to face the spring guide piece 171.
A compressed suspension spring 175 is arranged between the spring guide pieces 171 and 174. Therefore, the tip of the suspension arm 172 is always engaged with the upper surface of the receiving piece 170 while being pressed against it.

A shaft insertion hole 176 is formed in the width direction of the suspension arm 172. This shaft insertion hole 176
A caster shaft 177 is inserted through the shaft, and both ends of the caster shaft 177 project from both ends of the suspension arm 172. Front tires 178 are arranged on both sides of the front caster bracket 166.
8 is rotatably supported by the caster shaft 177.

The front tire 178 is a wheel 179.
And the tire rubber 1 arranged on the outer periphery of the wheel 179.
And 80. Then, as shown in FIG. 52, the wheel surfaces 181 of the wheels 179 of the pair of front tires 178 facing each other are formed on the rims 182 of the wheels 179 so as to be distant from each other.

The outer peripheral surface 182a of the wheel 189 is formed into a concave curved surface. And the outer peripheral surface 1
Conical protrusions 182b are formed on the surface 82a at predetermined intervals. The outer peripheral surface 182a is formed by the protrusion 182b.
The tire rubber 180 that fits into the tire is regulated so as not to come off easily.

Further, protective guide covers 183 are integrally formed on both sides of the outer peripheral edge of the front caster bracket 166 on the front side of the vertical line L2. Figure 5
1, as shown in FIG. 52, this protective guide cover 183
The cross-sectional shape of is curved so that the tip of the protective guide cover 183 approaches the front tire 178.
In addition, the length of the protective guide cover 183 in the width direction is formed to be substantially the same as the length of the front caster 106 configured by the pair of front tires 178 in the width direction.

Further, on the caster top 165, a swing lock arm 184 is arranged so as to straddle the caster top 165, and it is provided so as to rotate while sliding on the support shaft 185. Then, the swing lock arm 18
The operation portion 186 of No. 4 is provided so as to project to the rear side of the caster top 165.

Also, as shown in FIG. 46, the protective guide cover 1 at the top of the front caster bracket 166 is shown.
A turning restriction protrusion 187 is integrally formed on the upper surface of 83. Then, the front caster bracket 166 is swung to position the swivel restriction protrusion 187 below the swivel lock arm 184, and the operating portion 186 of the swivel lock arm 184 is pressed. Then, the swing lock arm 1
84 rotates while sliding around the support shaft 185. Therefore, as shown in FIG. 48, the turning restriction protrusion 187 is inserted into the turning lock arm 184. Therefore, the front caster bracket 166 provided with the pair of front tires 178 is restricted so as not to turn around the guide shaft 168.

A gap g1 is formed between the front tire 178 and the protective guide cover 183. When a shock or a load is applied to the pair of front tires 180 or the front caster arm 105, the suspension arm 172 rotates around the arm support pin 173 while compressing the suspension spring 175. At this time, as shown in FIG. 47, the tip of the suspension arm 172 is configured to move away from the upper surface of the receiving piece 170. When the suspension arm 172 rotates about the arm support pin 173 while compressing the suspension spring 175,
The front caster bracket 166 is designed to sink into the pair of front tires 178.

Therefore, the protective guide cover 183 and the upper surface side of the front tire 178 approach each other. At this time, the gap g1 becomes smaller than the protective guide cover 183 and the front tire 17.
It is formed between the protective guide cover 1 and
The interference between 83 and the front tire 178 is prevented. Therefore, the impact applied to the front tire 178 and the impact applied to the seat body 3 are absorbed by the expansion and contraction operation of the suspension spring 175.

When the front caster arm 105 is folded and the front caster 106 is located at the storage position, the protective guide cover 183 provided on the front caster bracket 166 is located below the front tire 178.

Next, the structure of the rear caster 111 will be described. As shown in FIGS. 1 and 53, a rear caster bracket 190 constituting a rear caster 111 is attached and fixed to the lower end of the rear caster arm 110. The caster top 191 of the rear caster bracket 190 is curved so as to be located inside the center line L3 of the rear caster arm 110, that is, on the front side of the seat portion 5. Then, as shown in FIG. 54, the rear caster bracket 190 is formed in a semi-circular plate shape.
The rear caster bracket 190 on the front side of the vertical line L4 that divides the rear caster bracket 190 into two.
An inclined surface 192 is formed on the.

A spring accommodating portion 193 having a lower opening is formed substantially at the center of the rear caster bracket 190. A receiving piece 194 protruding toward the spring accommodating portion 193 is formed on the lower surface of the rear caster bracket 190 on the front side of the vertical line L4. Further, the rear caster bracket 1 at the upper part of the spring accommodating portion 193
At 90, a spring guide piece 195 protruding into the spring accommodating portion 193 is formed.

The rear caster bracket 190 on the rear side of the vertical line L4 has the rear caster bracket 19
Suspension arm 196 arranged so as to straddle 0
Are supported by arm support pins 197. Therefore, the suspension arm 196 has the arm support pin 1
It is rotatably supported around 97.

The tip of the suspension arm 196 is engaged with the upper surface of the receiving piece 194. The spring guide piece 19 is provided on the upper surface of the suspension arm 196.
A spring guide piece 198 is formed so as to oppose to 5. A compressed suspension spring 199 is arranged between the spring guide pieces 195, 198. Therefore, the tip of the suspension arm 196 is always in pressure contact with the receiving piece 194.

A shaft insertion hole 200 is formed in the width direction of the suspension arm 196. This shaft insertion hole 20
The caster shaft 201 is inserted through the shaft 0, and both ends of the caster shaft 201 project from both ends of the suspension arm 196. Rear tires 202 are arranged on both sides of the rear caster bracket 190, and the rear tires 202 are rotatably supported by the caster shaft 201.

The rear tire 202 is composed of a wheel 203 and a tire rubber 204 arranged on the outer periphery of the wheel 203. Then, as shown in FIG. 61, the wheel surfaces 205 of the wheels 203 of the pair of rear tires 202 facing each other are formed on the rim 206 so as to be distant from each other.

The outer peripheral surface 203a of the wheel 203 is formed into a curved surface which is a concave surface. And the outer peripheral surface 20
3a has conical projections 203b formed at predetermined intervals. The protrusion 203b regulates the tire rubber 204 that is fitted so as not to come off easily.

Further, protective guide covers 207 are integrally formed on both sides of the outer peripheral edge of the rear caster bracket 190 on the rear side of the vertical line L4. 60 and 6
As shown in FIG. 1, the front end of the protection guide cover 207 is curved so as to approach the rear tire 202 side. The length of the protective guide cover 207 in the width direction is formed to be substantially the same as the thickness of the rear caster 111 configured by the pair of rear tires 202 in the width direction. Further, the rear tire 202 and the protection guide cover 207
A gap g2 is formed between and.

When a shock or a load is applied to the pair of rear tires 202 and the rear caster arm 110, the suspension arm 196 will move to the suspension spring 1
While compressing 99, it rotates about the arm support pin 197. At this time, as shown in FIG. 55, the distal end of the suspension arm 196 has a receiving piece 194.
The separating operation is performed from the upper surface of the. When the suspension arm 196 rotates about the arm support pin 197 while compressing the suspension spring 199, the rear caster bracket 190 sinks into the pair of rear tires 202.

Therefore, the protection guide cover 207 and the rear tire 202 approach each other. At this time, since the gap g2 is formed between the protective guide cover 207 and the rear tire 202, the interference between the protective guide cover 207 and the rear tire 202 is avoided. Therefore, the impact applied to the rear tire 202 and the seat body 3
The shock given to the is absorbed by the expansion and contraction operation of the suspension spring 199.

Further, in the pair of rear tires 202, the rotation lock portions 210 that extend radially around the shaft insertion hole 200 are formed to project on the wheel surfaces 205 that face each other. This rotation lock part 210 is provided with the engaging recess 21.
1 and a plurality of engaging protrusions 212 are formed at predetermined intervals. Further, a circular pin locking projection 213 is formed at the tip of the engagement projection 212.

A rotation restricting member 214 is provided so as to straddle the rear caster bracket 190 on the front side. This rotation restricting member 214 is a member support shaft 2
It is rotatably supported by 15 so as to slide. Further, as shown in FIGS. 54 and 58, a pair of rotation restricting concave portions 216a and 216b are formed on both side surfaces of the rear caster bracket 190 on the front side of the vertical line L4. A rotation restricting protrusion 217 is formed on the inner surface of the rotation restricting member 214 so as to be engaged with the rotation restricting recesses 216a and 216b.

Further, the rotation restricting member 214 is provided with a rotation restricting operation lever 218 protruding from the space between the pair of rear tires 202 to the front side. The rotation regulating operation lever 218 has a first contact surface 220 that contacts the inclined surface 192.
And a second contact surface 221 are formed respectively. Further, the rotation restricting member 214 has a lock pin 2 which can be arranged in the engaging recess 211 of the rotation lock portion 210.
19 is formed overhanging.

Therefore, in the state of FIG. 56, the first contact surface 220 of the rotation restricting operation lever 218 contacts the inclined surface 192, and the lock pin 219 of the rotation restricting member 214 enters the engaging recess 211. Therefore, the lock pin 219 and the engagement protrusion 212 are not engaged with each other. Therefore, the pair of rear tires 202 are adapted to rotate. In this state, the rotation regulating operation lever 218 is operated, and the second contact surface 221 of the rotation regulating operation lever 218 is moved to the inclined surface 1.
Abut on 92.

Then, as shown in FIG. 57, the lock pin 219 is adapted to enter into the engagement recess 211 of the rotation lock portion 210. Further, the rotation restricting protrusion 217 of the rotation restricting member 214 is inserted into the rotation restricting recess 216b. Therefore, the lock pin 219 and the engaging protrusion 21
2 are engaged with each other, and the pair of rear tires 202 are locked so as not to rotate.

On the other hand, from the state shown in FIG. 57, the rotation restricting operation lever 218 is operated to rotate the rotation restricting member 214 so that the first contact surface 220 contacts the inclined surface 192. Then, as shown in FIG. 56, the lock pin 219
Comes out from the engaging recess 211 of the rotation lock portion 210,
The engagement between the engagement protrusion 212 and the lock pin 219 is released. Further, the rotation restricting protrusion 217 of the rotation restricting member 214 is engaged with the rotation restricting recess 216b. Therefore, the pair of rear tires 204 can be rotated.

When the rear caster arm 110 is folded and the rear caster 111 is located at the accommodation position, the protection guide cover 207 provided on the rear caster bracket 190 is located below the rear tire 202.

Next, the operation of the infant safety seat 1 configured as described above will be described. Figure 1 shows the base body 2
The front and rear casters 106 and 11 on the lower surface of the
1 shows a state in which the child safety seat 1 is used as a stroller by projecting 1 out. In this state, by operating the infant safety seat 1 while holding the handle 19, the front caster 106 and the rear caster 111 can be rotated and run. Further, since the front casters 106 are steerable, the front casters 106 are steered in response to the turning of the infant safety seat 1, and the infant safety seat 1 turns smoothly.

As shown by the solid line in FIG. 45, the swing lock arm 184 is attached to the front caster bracket 1.
66 does not engage with the turning restriction protrusion 187. Therefore, the front caster 1 configured by the pair of front tires 178 and the front caster bracket 166.
06 can be swung around the guide shaft 168. Further, if necessary, the operation unit 186 is operated, and the operation shown in FIG.
The swing lock arm 184 is rotated about the support shaft 185 to the position shown by the two-dot chain line in FIG.
The turning restriction protrusion 187 is inserted into the No. 4 inside. In this state, when the front caster 106 configured by the pair of front tires 178 and the front caster bracket 166 tries to turn around the guide shaft 168, the turning restriction protrusion 187 and the turning lock arm 184 engage with each other. As a result, the front casters 106 can be restricted from turning.

Further, the force due to the load or the impact is applied to the seat body 3
Is applied to the front caster 106 via the base body 2 and the front caster arm 105. This force is the front caster 10
When added to the front caster bracket 166 of No. 6, as shown in FIG. 47, the suspension arm 172 rotates on the side of the arm support pin 173 with the caster shaft 177 as a fulcrum.

By the rotation of the suspension arm 172, the suspension arm 172 is separated from the upper surface of the receiving piece 170, and the spring guide pieces 171 and 174 are formed.
The suspension spring 175 arranged therebetween is compressed. Therefore, the front caster bracket 166 sinks between the pair of front tires 178. At this time, the protection guide cover 1 of the front caster bracket 166
Although 83 approaches the front tire 178, mutual interference is avoided because the gap g1 is formed in advance.

As a result, even if a force is applied to the pair of front tires 178, the suspension spring 199 expands and contracts according to the force and absorbs the force, so that the riding comfort can be improved.

Further, a pair of front tires 178 whose thickness is not increased is used, and the wheel surfaces 181 of the wheels 179 constituting this front tire 178 are opposed to each other.
Are separated from each other to form a deviation on the rim 182. Therefore,
It is possible to widen the space formed between the pair of wheel surfaces 181.

By widening the space formed between the pair of wheel surfaces 181, the suspension arm 172 and the suspension spring 175 provided on the front caster bracket 166 can be easily accommodated in the space.

As a result, the suspension arm 172 and the suspension spring 175 can be hidden by the pair of front tires 178, and the appearance can be improved. Furthermore, the suspension arm 172
Since there is no need to provide a special cover ring for blindfolding the suspension spring 175, the front caster 106 can be made compact.

Further, since the guide shaft 168 is provided offset from the vertical line L2 of the front caster bracket 166 toward the front side, the pair of front tires 178 can be always swung in the traveling direction. Further, due to the offset of the guide shaft 168, the front caster 10
It is possible to prevent 6 from turning carelessly.

Then, the front caster bracket 16
A turning control protrusion 187 is provided on the top of the turntable 6, and a turning lock arm 184 that engages with the turning control protrusion 187 is formed on the caster top 165. Therefore, the front caster 1
Since the turning lock arm 184 can be arranged above the pair of front tires 178 in 06,
The turning lock arm 184 that locks or unlocks the pair of front tires 178 so as not to turn can be easily operated.

Further, the front caster bracket 166.
Since the protection guide cover 183 for preventing splashing of mud and rainwater is integrally formed on the front caster bracket 106,
Since it is not necessary to attach a separate member to, the number of parts can be reduced and a compact structure can be achieved.

In this embodiment, the front tire 17
The pair of wheel surfaces 181 are formed so as to be spaced apart from the rim 182 of FIG. 8, but the wheel surfaces 181 themselves are bulged or curved so that the pair of wheel surfaces 181 are separated from each other. May be.

On the other hand, as shown in FIG. 54, the lock pin 219 of the rotation restricting member 214 does not enter the engaging recess 211 of the rotation lock portion 210. Also, the rotation regulating member 21
The rotation restriction protrusion 217 of No. 4 is in a state of being engaged with the rotation restriction recess 216a. Therefore, the pair of rear tires 202 can be rotated around the caster shaft 201.

Here, by operating the rotation regulating operation lever 218 from the state shown in FIG. 56, the rotation regulating member 214 is rotated around the member support shaft 215. Then, FIG.
As shown in FIG.
It is in a state of having entered into the engaging concave portion 211. Further, the rotation restricting protrusion 217 of the rotation restricting member 214 is provided in
It will be in the state engaged with 16b.

Therefore, even if the pair of rear tires 202 try to rotate around the caster shaft 201, the lock pin 21
Since 9 engages with the engaging protrusion 212, the rotation of the pair of rear tires 202 can be locked. Further, even if a force that the pair of rear tires 202 try to rotate around the caster shaft 201 is applied to the lock pin 219, the pin locking projection 213 prevents the lock pin 219 from easily coming out of the engagement recess 211. You can

Further, due to the engagement of the rotation restricting protrusion 217 of the rotation restricting member 214 and the rotation restricting recesses 216a and 216b, the rotation restricting member 214 is carelessly moved by the member support shaft 215.
It is possible to prevent the lock pin 219 from entering into the engagement recess 211 and the lock pin 219 from coming out of the engagement recess 211 by rotating around.

Further, similarly to the front caster 106, when a force due to load, impact, etc. is applied to the seat body 3, the force is applied to the rear caster 111 via the base body 2 and the rear caster arm 110. This force is applied to the rear caster bracket 190 of the rear caster 111.
55, the suspension arm 196 rotates on the side of the arm support pin 197 with the caster shaft 201 as a fulcrum, as shown in FIG.

By the rotation of the suspension arm 197, the suspension arm 197 is separated from the upper surface of the receiving piece 194 and the spring guide pieces 195, 198 are provided.
The suspension spring 199 arranged between them is compressed. Therefore, the rear caster bracket 190 sinks between the pair of front tires 202. At this time, the protective guide cover 207 of the rear caster bracket 190 approaches the rear tire 202, but since the gap g2 is formed in advance, mutual interference is avoided.

As a result, even if a force is applied to the pair of rear tires 202, the suspension spring 199 expands and contracts according to the force and absorbs the force, so that the riding comfort can be improved.

Further, like the front casters 106,
Use a pair of rear tires 202 that do not increase in thickness,
Wheel surfaces 205 of the wheel 203 constituting the rear tire 202, which are opposed to each other, are formed on the rim 206 with a space therebetween. Therefore, the space formed between the pair of wheel surfaces 205 can be widened.

By widening the space formed between the pair of wheel surfaces 205, the suspension arm 196 and the suspension spring 199 provided on the rear caster bracket 190 can be easily accommodated in the space.

As a result, the suspension arm 196, the suspension spring 199, and the rotation lock portion 210.
Etc. can be blindfolded by the pair of rear tires 202, and the appearance can be improved. Furthermore, the suspension arm 196 and the suspension spring 199.
Since it is not necessary to provide a special cover ring for blindfolding, the rear caster 111 can be made compact.

Further, since the protection guide cover 207 is formed integrally with the rear caster bracket 190 on the rear side of the vertical line L4, it is possible to prevent splashing of mud and rainwater. As a result, there is no need to attach a separate member to the rear caster bracket 190 to prevent splashing of mud or rainwater, and the number of parts can be reduced, and
A compact configuration can be achieved.

Further, as shown in FIG. 19, the side guard 4
When the engagement release guide piece 54 formed in 0 is bent in the direction of arrow A, the engagement between the engagement claw 55 and the guard connection piece 57 is released. When the front guard 56 is pulled out in this state, the guard connecting piece 57 can be pulled out from the guard hole 53.

Then, with the front guard 56 removed from the side guard 40, as shown in FIG. 18, the elastic piece 46 of the guard connecting pin 44 is bent to engage the locking claw 47 with the guard hole 43. To release. In this state, the guard connection pin 44 is pulled out from the side guard hole 40a, the connection hole 40c of the gap absorbing wall member 40b, and the connection hole 15a of the connection piece 15.

At this time, the thickness t1 of the locking claw 47 is the dimension t.
Since it is formed larger than 2 and t3, the guard connection pin 44 can be reliably pulled out. Then, the side guard 40 becomes rotatable around the tapping screw 42. Then, if the side guard 40 is rotated,
As shown in FIG. 21, the side guard 40 and the connection piece 15 are separated from each other.

The main belt 10 and the sub belt 9 are removed from the child belt connecting device 8. Then, the main belt 10, the sub belt 9, the child belt connecting device 8, the side guard 40, and the connecting piece 15 can pass through the hole 48 of the cover 12, so that the cover 12 can be easily removed from the seat body 3. .

Therefore, since the other end of the side guard 40 is detachably attached to the connecting piece 15, it is not necessary to form a slit for guiding the side guard 40 into the hole 48 in the cover 12. As a result, the appearance of the cover 12 can be improved. Moreover, the cover 12 can be easily removed from the seat body 3 to facilitate cleaning such as washing.

The lever arm 128 is always biased to the front side by the handle spring 129 provided between the connecting rod 120 and the lever arm 128. At this time, the regulation pin 85 formed on the base body 3 regulates the frontward rotation of the lever arm 128, and the lever arm 128 is positioned on the left and right outer side portions of the center of the support portion 7 of the seat body 3. You can

Further, when the infant safety seat 1 is in the stroller state, the lock sliding member 13 in the connecting rod 120 is provided.
The engagement notch 135 at 0 and the locking projection 143 of the lock member 140 are engaged with each other. Further, the locking projection 143 is in a state of being engaged with the rotation restricting plate 146 of the reinforcement assisting member 144.

Therefore, even if the child safety seat 1 is lifted by the side support 40, the engaging notch portion 1
35, the locking projection 143, and the rotation restricting plate 146 are engaged with each other so that the connecting rod 120 and the locking projection 143.
Does not rotate about the connection support pin 142. As a result, the front caster arm 105 and the rear caster arm 110 are not rotated, and the front caster 106 and the rear caster 111 are always fixed at stable traveling positions.

Also, the locking projection 143 and the rotation restricting plate 1
By engaging with 46, the lock member 140 can be prevented from pivoting downward (on the ground side) about the connecting support pin 142. As a result, the front casters 106
Also, the rear caster 111 can be fixed to a stable traveling position at all times.

Next, in order to change the infant safety seat 1 from the stroller state shown in FIG. 1 to the child seat state, as shown in FIGS. 35 and 37, the lever arm 128 which is in contact with the regulating pin 85 is indicated by an arrow. Direction, that is, regulation pin 8
It is rotated in the direction away from 5. At this time, the lever arm 128 is positioned on the left and right outer sides of the center of the support portion 7 of the seat portion 5 by the regulation pin 85, so that the operability when gripping the lever arm 128 from the rear side of the infant seat 1 is improved. You can

Therefore, the lever arm 128 rotates about the lever support pin 127. Then, FIG. 40 and FIG.
As shown in FIG. 1, the rotation restricting portion 15 of the lever arm 128
9 contacts the upper surface of the connecting rod 120 and the lever arm 128
The sliding protrusion 160 slides while pressing the pressing slide surface 155 of the lock release 153 while restricting the rotation of the lock release 153. Therefore, the lock release 153 is the release axis 1
It rotates about 53a. By the rotation of the lock release 153, the engaging recess 154 presses the pressing surface 134 of the lock sliding member 130 against the biasing force of the biasing spring.

Then, the lock sliding member 130 is connected to the connecting rod 1.
20 slides on the base end side of the rear-side linear portion 123.
Therefore, the engagement notch portion 135 of the lock sliding member 130
The engagement between the locking projection 140 and the locking projection 143 of the locking member 140 is released. In this state, if the infant safety seat 1 is lifted while holding the lever arm 128, the connecting rod 120 and the lock member 140 rotate about the connecting support pin 142 as shown in FIG.

Therefore, with the front caster arm 105 pivoting to the rear side and the front caster 106 positioned above the lower surface of the base body 2, the protective cover 1
It is arranged at a storage position between the seat 50 and the support portion 7 of the seat body 3. Further, the rear caster arm 110 is pivoted to the front side, and the rear caster 111 is positioned above the lower surface of the base body 2 and is disposed at the accommodation position on the outer side portion of the front linear portion 122 of the connecting rod 120. To be done. Therefore, the front caster 106 and the rear caster 111 are stored in a storage position where they are not used.

On the other hand, when the rear caster arm 110 is rotated toward the front side, the rear arm lock 113 shown in FIG. 29 is rotated as shown in FIG. for that reason,
The push-up surface 116 of the rear arm lock 113 pushes up the lower end surface of the lock arm 89 while resisting the biasing force of the coil spring 92. Then, the lock arm 89 rotates about the support pin 76 in a direction away from the partition wall 88.

Then, when the rear caster 111 of the rear caster arm 110 is disposed on the outer side of the front straight portion 122 of the connecting rod 120, the rear lock arm 113 has the tip of the lock arm 89 as shown in FIG. Located in. Therefore, the lock arm 89 is rotated around the support pin 76 by the biasing force of the coil spring 92, and the lower end surface of the lock arm 89 is in contact with the partition wall 88.

Therefore, the contact surface 117 formed on the extending portion 115 of the rear lock arm 113 is in a state of engaging with the tip of the lock arm 89. The rear caster arm 110 is regulated by its own weight so as not to rotate to the lower surface side of the base body 2. As a result, the front caster 106 and the rear caster 111 are held at the storage position where they are not used. In this state, the infant safety seat 1 is once lowered and the lever arm 128 is released.

Then, as shown in FIGS. 43 and 44, the lever arm 128 is rotated to the front side by the urging force of the handle spring 129. And the lever arm 1
28 contacts the regulation pin 85 and its rotation is regulated.
At this time, the grip portion 158 and the intermediate portion 157 of the lever arm 128 are located above the rear caster 111 and cover the upper portion of the rear caster 111.

The lock sliding member 130 is the urging spring 13.
The urging force of 2 causes the connecting rod 130 to slide to the front end side of the rear-side linear portion 123. Then, the engaging recess 154 of the lock release 153 and the pressing surface 134 of the lock sliding member 130 are engaged with each other, and the sliding of the lock sliding member 130 by the urging force of the urging spring 132 is restricted.

Further, when the front caster 106 and the rear caster 111 are arranged at the accommodation positions, respectively, the protective guide covers 183 and 207 of the front caster bracket 166 and the rear caster bracket 190 are located below the front tire 178 and the rear tire 202. .

As shown in FIGS. 62 and 63, the child safety seat 1 in the child seat state can be mounted on the vehicle seat 230. That is, FIG. 62 shows an example of using the child safety seat 1 in the child seat state so as to face the vehicle seat 230. In this case, an infant up to the age of 1 is placed on the infant safety seat 1.

In this case, the seat belt 231 extending from the lower side of the door (not shown) is hooked on one hook 34, which is inserted through the hook insertion hole 33, through the gap g, and is passed through the back surface of the seat portion 5. Then, the seat belt 231 is hooked on the other hook 34 that is inserted through the hook insertion hole 33 through the gap g, and the connection fitting 232 is connected to the seat belt connection device 233. Further, the seat belt 231 is drawn around the back surface of the back portion 6, passes through the through grooves 23a and 23b, and is introduced into a winding device of a center pillar (not shown). Therefore, the seat belt 231 is supported by the pair of belt support pieces 25a and 25b.

In this case, the infant safety seat 1 can be easily mounted so as to face the vehicle seat 230 by the hook 34 that is inserted through the hook insertion hole 33.
Further, FIG. 63 shows an example in which the child safety seat in the child seat state is used in the same direction as the vehicle seat 230. This is a case where infants aged 1 to 4 are placed on the infant safety seat 1.

In this case, the seat belt 231 extending from the lower side of the door (not shown) is hooked on one hook 34 which is inserted through the hook insertion hole 31 with a gap g, and the back surface of the back portion 6 is passed. Then, the seat belt 231 is hooked on the other hook 34 passing through the hook insertion hole 34 via the gap g to connect the connecting fitting 232 to the seat belt connecting device 233. Further, the seat belt 231 has the through groove 2
After passing through 3a and 23b, it is introduced into a winding device for a center pillar (not shown). Therefore, the seat belt 23
1 is supported by a pair of belt support pieces 25a and 25b.

In this case, the infant safety seat 1 can be easily mounted in the same direction as the vehicle seat 230 by the hook 34 that is inserted through the hook insertion hole 31. As a result, if the seat belt 231 is hooked on the hook 34 that matches the orientation of the infant safety seat 1, it can be attached to the vehicle seat 230 in response to the change in orientation of the infant safety seat 1.

Further, due to the engagement relationship between the hook 34 and the seat belt 231, the infant safety seat 1 is secured to the vehicle seat 230.
Can be attached to. As a result, the work of hooking the seat belt 231 on the hook 34 becomes easy. Therefore, it is possible to easily attach and remove the infant safety seat 1 to and from the vehicle seat 230.

When the infant safety seat 1 is impacted in the state shown in FIG. 62, the back portion 6 tries to move forward. At this time, since the seat belt 231 is hooked on the pair of belt support pieces 25a and 25b, the seat belt 231 supports the entire back portion 6. As a result, the infant safety seat 1 can be more reliably supported by the seat belt 231 and the safety can be improved.

Further, in the state shown in FIG. 63, when the infant safety seat 1 is impacted, the back portion 6 tries to move to the front side. At this time, since the seat belt 231 is hung on the pair of belt support pieces 25a and 25b,
The seat belt 231 includes a pair of belt supporting pieces 25a, 2
The back part 6 is supported via 5b so as not to move to the front side. Further, since the belt supporting pieces 25a and 25b are reinforced by the reinforcing plate 27, the seat belt 23
Even if a strong impact is applied to the belt supporting pieces 25a and 25b by No. 1, it is not damaged. As a result, the infant safety seat 1 can be more reliably supported by the seat belt 231 and the safety can be improved.

In the stroller state where the front casters 106 and the rear casters 111 are used, the protective guide covers 183 and 207 are used for the purpose of preventing splashing of mud and water. This can be used as a device for catching mud and water when the front caster 106 and the rear caster 111 are not used in the child seat state.

As a result, even if the child safety seat 1 in the child seat state is placed on the vehicle seat 230, the mud and water adhering to the front casters 106 and the rear casters 111 are received by the protective guide covers 183 and 207, so that the vehicle seat 230 is retained. Can be prevented from becoming dirty. Moreover, the protective guide covers 183, 20
7 prevents the front tire 178 and the rear tire 202 from coming into direct contact with the vehicle seat 230 to prevent the vehicle seat 230 from being contaminated.

Further, unless the left and right lever arms 128 of the infant safety seat 1 are held and pulled toward the rear side, the engagement between the lock sliding member 130 and the lock member 140 cannot be released. Therefore, the connecting rod 120 and the lock member 140 can be prevented from rotating around the connecting support pin 142. As a result, it is possible to reliably prevent the careless folding operation of the connecting rod 120 and the lock member 140.

Further, if the child safety seat 1 is lifted while holding the lever arm 128 while pulling the lever arm 128 to the rear side, the lock sliding member 130 and the lock member 140 are disengaged from each other, and are connected and supported. The connecting rod 120 and the lock member 140 can be rotated around the pin 142.

By rotating the connecting rod 120 and the lock member 140, the front caster arm 105 and the rear caster arm 110 can be rotated so that the front caster 106 and the rear caster 111 can be stored in the storage positions where they are not used. Further, by rotating the rear caster arm 110, the contact surface 117 of the rear arm lock 113 and the tip of the lock arm 89 can be engaged, and the rotation of the front caster arm 105 and the rear caster arm 110 is restricted. . Therefore, the state where the front caster 106 and the rear caster 111 are housed in the housing position can be maintained. Then, once the child safety seat 1 is lowered and the lever arm 128 is released, the lever arm 128 is brought into contact with the restriction pin 85 by the handle spring 129.

Therefore, when the lever arm 128 is pulled while rotating to the rear side and the infant safety seat 1 is lifted, the infant safety seat 1 in the stroller state can be brought into the child seat state.

As a result, the child safety seat 1, which is in the stroller state, can be brought into the child seat state by only operating the lever arm 128 without any special operation, and the operability can be improved.

When the child safety seat 1 in the stroller state is brought into the child seat state, the lever safety arms 1 on both the left and right sides are pulled up and the child safety seat 1 is only lifted up. It can be easily performed with the infant on the seat 1.

Further, the lever arm 1 is fixed by the regulating pin 85.
The lever arms 128 can be arranged on the left and right sides of the seat body 3 by restricting the rotation of the seat body 28. As a result, the operation of gripping the lever arm 128 and rotating it to the rear side can be easily performed.

Moreover, the operation of rotating the connecting rod 120 and the locking member 140 based on the operation of the lever arm 128 and the operation of lifting the infant safety seat 1 while holding the lever arm 128 are continuously performed. Therefore, operability can be improved.

The front caster arm 105 and the rear caster arm 110 are connected by the connecting rod 120 supported by the connecting support pin 142 and the lock member 140. As a result, the folding operation of the front caster arm 105 and the rear caster arm 110 can be performed with a simple configuration. Moreover, the front caster arm 105 and the rear caster arm 110
The rotation amount of can be freely set.

Further, the lever arm 128 is provided with a base portion 156,
The intermediate portion 157 and the grip portion 158 were formed into a curved shape, and were attached to the connecting rod 120 so that the direction thereof would face the front side of the infant safety seat 1. Therefore, when disposing the front caster 106 and the rear caster 111 of the infant safety seat 1 in the stroller state, the infant safety seat 1 can be lifted while holding the lever arm 128.

Moreover, when the infant safety seat 1 is lifted, the grip portion 158 of the lever arm 128 engages with the base of the finger of the hand, so that the lever arm 128 does not slip off the hand. As a result, the lever arm 1
28 can be firmly gripped, and the infant safety seat 1 can be reliably lifted.

Further, since the front caster 106 is disposed between the support portion 7 of the seat body 3 and the protective cover 150, the front caster 106 is covered by the support portion 7 and the protective cover 150. As a result,
It is possible to adopt a configuration in which the front casters 106 are not easily touched.

The rear caster 111 is connected to the connecting rod 12.
Although it is located on the outer side of the front straight portion 122 at 0, the upper side of the rear caster 111 is above the lever arm 11.
Covered by 1. As a result, the rear caster 1 is easy
It is possible to adopt a configuration in which 06 is not touched.

Also, the lever arm 128 is the rear caster 1.
It is used as a cover for covering 11. Similarly, the front caster 106 is housed between the support portion 7 of the body sheet 3 and the protective cover 150.

As a result, it is not necessary to specially provide a cover for covering the front caster 106 and the rear caster 111, the number of parts can be reduced, and the structure can be made compact.

The lever arm 128 is always biased to the front side by the biasing force of the handle spring 129. Therefore, if the lever arm 128 is freely released after the front caster 106 and the rear caster 111 are arranged at the accommodation position, the lever arm 128 is rotated by the urging force of the handle spring 129 and is positioned above the rear caster 111.

As a result, the lever arm 1 is placed above the rear caster 111 without special operation of the lever arm 128.
28 can be positioned to cover the rear caster 111. Moreover, the lever arm 128 has a simple structure.
The rear caster 111 can be covered with the above.

Further, when the front caster 106 and the rear caster 111 are arranged at the accommodation position which is the outer side portion of the seat body 3, the front caster arm 105 and the rear caster arm 110 are located on the outer side portion of the base body 2. Becomes

Therefore, the front caster 106, the rear caster 111 and the front caster arm 105,
The rear caster arm 110 is not arranged below the base body 2. As a result, the height of the child safety seat 1 in the child seat state is lowered, and the child safety seat 1 can be easily taken in and out of the vehicle.

Further, since the front casters 106 and the rear casters 111 can be located on the outer side portions of the seat body 3, the front casters 1 are attached to the vehicle seat 230.
It is possible to prevent the 06 and the rear caster 111 from coming into contact with each other. As a result, the vehicle seat 230 can be prevented from becoming dirty.

Further, the length of the front caster arm 105 and the rear caster arm 110 in the width direction is equal to or longer than the length of the seat body 3 in the width direction.
As a result, when the child safety seat 1 in the child seat state is placed on the vehicle seat 230, the front caster arm 105 and the rear caster arm 110 contact the vehicle seat 230 to support the infant safety seat 1 in a stable state. be able to.

Further, the length of the rear caster arm 110 in the width direction is made larger than the length of the front caster arm 105 in the width direction. Therefore, even if the front caster arm 105 and the rear caster arm 110 are folded in a direction of approaching each other, it is possible to avoid mutual interference.

Further, the width of the front caster arm 105 in the width direction is shorter than the length of the rear caster arm 110 in the width direction. Therefore, as shown in FIG. 63, when the child safety seat 1 in the child seat state is placed on the vehicle seat 230, the front casters 106 do not interfere with the side supports 234 of the vehicle seat 230 to prevent damage. Can be

A front caster 106 is provided on the rear side of the center line L1 of the front caster arm 105, and a rear caster arm 111 is provided on the front side of the center line L3 of the rear caster arm 110.

As a result, when the front caster 106 and the rear caster 111 are arranged at the accommodating position, the front caster 106 and the rear caster 111 are arranged at the accommodating position by a small rotation amount of the front caster arm 105 and the rear caster arm 110. You can
Moreover, the front casters 106 and the rear casters 111
Is projected from the lower surface of the base body 2, or the vehicle seat 23
It is possible not to touch 0.

In this embodiment, the lever arm 128
Although a handle spring 129 for urging the lever arm 128 is provided, it may be omitted if necessary, and a person can use the lever arm 128.
It is also possible to rotate so that it is positioned above the rear caster 111.

Next, to put the child safety seat 1 in the child seat state back in the stroller state, the side guards 40 on both the left and right sides of the seat body 3 are first gripped. At the same time, as shown by the chain double-dashed line in FIG. 17, the lock release lever 51 provided in the side guard 40 is rotated.

The wire 91 is pulled into the side guard 40 by the rotation of the lock release lever 51. Then, when the wire 91 is pulled into the side guard 40, as shown in FIG. 32, the lock arm 89 resists the biasing force of the coil spring 92 via the arm lever 90 and the partition wall 88 centering on the support pin 76. It rotates in the direction away from. Then, the engagement between the contact surface 117 of the extending portion 115 of the rear arm lock 113 and the tip of the lock arm 89 is released.

In this state, if the infant safety seat 1 is lifted, the front caster arm 105 rotates to the front side by its own weight, and the rear caster arm 1
10 rotates to the rear side due to its own weight. Then, the front caster arm 105 and the rear caster arm 11
When the infant safety seat 1 is lowered with 0 hanging down,
The front caster arm 105 and the rear caster arm 110 further open to expand each other.

At this time, the connecting rod 120 and the lock member 1
40 performs an opening operation centering on the connection support pin 142. or,
The locking protrusion 143 of the lock member 140 presses the push-down portion 136 of the lock sliding member 130 while resisting the biasing force of the biasing spring 132. Therefore, the lock sliding member 13
0 slides on the base end side of the rear linear portion 123 of the connecting rod 120.

Eventually, the front caster arm 105 and the rear caster arm 110 expand to each other, and the front caster 106 and the rear caster 111 are positioned at the predetermined traveling position. Then, the locking protrusion 143 of the lock member 140 gets over the push-down portion 136 of the lock sliding member 130.

Therefore, since the pressing of the lock sliding member 130 is released by the locking projection 143, the lock sliding member 130 slides toward the tip side of the rear linear portion 123 by the urging force of the urging spring 132. To do. Therefore, the engagement notch 135 of the lock sliding member 130 and the lock member 14
The locking protrusion 143 of 0 is engaged. Also, the pressing surface 134 of the lock sliding member 130 and the lock release 153
The locking slide member 130 is prevented from sliding toward the front end side of the rear-side straight line portion 123.

Therefore, the child safety seat 1 which has been in the child seat state can be put in the stroller state again. Further, since the side guards 40 are provided on the support portions 7 on both the left and right sides of the seat body 3, the side guards 40 can be firmly gripped, and the child safety seat 1 in the child seat state can be easily lifted. Therefore, the child safety seat 1 in a child seat state can be carried. or,
Side guard 4 while operating the lock release lever 51
You can firmly hold 0 and lift the infant safety seat 1. Then, the infant safety sheet 1 can be put in a stroller state. As a result, even a weak woman can easily perform the above operation while the infant is placed on the infant safety seat 1.

Particularly, the side guard 40 is provided on the seat body 3 so as to connect the upper surface of the support portion 7 in the seat portion 5 and the upper surface of the support portion 7 in the back portion 6. As a result, it is possible to improve workability when lifting the infant safety seat 1 by gripping the side guard 40 from the rear side of the infant safety seat 1.

Further, while holding the side guards 40 provided on the support portions 7 on the left and right sides of the seat body 3 and operating the lock release levers 51 provided on the respective side guards 40, the infant safety seat 1 is lifted. Then, the lock can be released and the stroller state can be set.

Therefore, by operating the lock release lever 51 while holding the side guard 40 and lifting the infant safety seat 1, the child safety seat 1 can be brought into a stroller state.

As a result, since it is possible to perform the operation while holding the infant safety seat 1 in a stable state, the safety is high and the operability can be improved. In addition, the lock release levers 5 provided on the left and right side guards 40
The child safety seat 1, which is in the child seat state, cannot be set in the stroller state unless both 1 are operated at the same time.

Therefore, even if only the lock release lever 51 provided on one side guard 40 is operated, the front caster arm 105 and the rear caster arm 110 are kept in the locked state. As a result, safety can be reliably ensured so that the front caster arm 105 and the rear caster arm 110 do not rotate even if only one lock release lever 51 is operated.

Further, the base body 2 is formed with a lightening hole 70 having a rectangular shape. As a result, the weight of the base body 2 can be reduced. Moreover, although a belt device (not shown) is attached to the center of the back surface of the seat portion 5, the work of attaching the belt device can be facilitated.

Furthermore, after passing the main belt 10 extending from the belt device between the base body 2 and the seat body 3,
The belt is passed through the belt passing hole 11 of the back portion 6. At this time, the operation of passing the main belt 10 extending from the belt device between the base body 2 and the seat body 3 can be easily performed, and the main belt threading operation can be easily performed.

[0226] Then, it is possible to prevent dust and the like from accumulating on the upper surface of the base body 2, and to keep the infant safety sheet 1 clean. On the contrary, by forming the lightening hole 70, the base body 2 of the child safety seat 1 can be easily cleaned. Further, by forming the lightening hole 70, the assembling work for connecting the base body 2 and the seat body 3 with the support pin 76 can be easily performed.

[0227] Further, the pair of horizontal frames 7 constituting the base body 2
1 was formed so as to curve upward. Therefore, when the infant safety seat 1 in the child seat state is placed on the vehicle seat 230, the infant safety seat 1 can be placed along the curved shape of the vehicle seat 230. As a result, the infant safety seat 1 is replaced with the vehicle seat 230.
Can be placed in a stable state with respect to.

Furthermore, a pair of horizontal frames 71 forming the base body 2 are formed so as to be curved upward, and the pair of horizontal frames 71 are formed.
A storage space 74 is formed on the lower surface of the. Therefore, FIG.
As shown in FIG. 2, for example, a reinforcing rod 235 is provided on the front caster arm 105, and the front caster arm 1
Suppose that 05 is reinforced.

The front caster arm 105 in this state
Even if the front caster 106 is disposed at the accommodating position by rotating, the reinforcing rod 235 can be disposed within the accommodating space 74 as shown in FIG. 65, and therefore the amount of rotation of the front caster arm 105 does not change. . As a result, the front caster 106 can be disposed between the support portion 7 and the protective cover 150, as in the above-described embodiment. Further, the front caster arm 105 can be reinforced by the reinforcing rod 235.

Further, since the front caster arms 105 which are inserted into the base body 2 from the left and right sides are connected by the auxiliary pipes 107, the rotations of the left and right front caster arms 105 can be synchronized. Similarly, since the rear caster arms 110 that are inserted into the base body 2 from the left and right sides are connected by the auxiliary pipes 112, the rotations of the left and right rear caster arms 110 can be synchronized.

Further, since the front caster arm 105 and the rear caster arm 110 which are inserted into the base body 2 from both the left and right sides are connected by the auxiliary pipes 107 and 112, the base body 2 can be integrally molded.

As a result, the number of parts constituting the base body 2 can be reduced and the strength of the base body 2 can be improved. Furthermore, a footrest 102 is integrally formed at the tip of the base body 2. As a result, it is not necessary to provide the footrest 102 on the front caster arm 105 or the base body 2 by a separate member, and the number of parts can be reduced.

When the child safety seat 1 is placed on the vehicle seat 230 in the child seat state, the footrest 102 also comes into contact with the vehicle seat 230. As a result, the load of the infant safety seat 1 can be prevented from being partially applied to a part of the vehicle seat 230, and the vehicle seat 230 can be protected.

Further, when the infant safety seat 1 is attached to the vehicle seat 230 in the stroller state, when a strong impact is caused by an accident or the like, the seat receiving portion 104 of the base body 2 receives the seat body 3. . As a result, the strong impact applied to the seat body 3 is applied to the base body 2
The safety of the infant safety seat 1 can be improved because it can be released.

Further, the infant safety seat 1 may be in either a stroller state or a child seat state, but the reclining operation lever 62 is operated and the reclining rod 60 is attached to the coil spring 61 by the locking hook 64. Rotate while resisting power. Then, as shown in FIG. 27, the reclining rod 60 is in a state of coming out of the rod engaging recess 82 of the rod locking piece 81.

Then, the seat body 3 becomes rotatable about the support pins 76. In this state, the support pin 76
The seat main body 3 is rotated around, and the operation of the reclining operation lever 62 is released. Then, the reclining rod 60 slides along the side surface of the rod locking piece 81 by the urging force of the coil spring 61, and when the reclining rod 60 and the rod engaging concave portion 82 correspond to each other, the reclining rod 60 and the rod engaging concave portion 82 engage. Are combined. Therefore, the seat body 3 includes the reclining rod 60 and the support pin 76.
With the above, the state of being supported and fixed to the base body 2 is achieved.

Although the side guard 40 of this embodiment is attached so as to extend from the support portion 7 of the seat portion 5 to the support portion 7 of the back portion 6, the side guard 40 is integrally formed as shown in FIGS. 66 to 68. May be. Further, a grip portion 240 for facilitating gripping of the support portion 7 may be integrally formed with the support portion 7 above the back portion 6.

With this structure, the infant safety seat 1 is first placed on the vehicle seat 230, and then the infant safety seat 1 is attached to the vehicle seat 230 as shown in FIG. 62 or FIG.
When operating in the predetermined state shown in FIG. 3, the grip portion 240 can be gripped. As a result, the operability of the infant safety seat 1 can be improved.

Further, the other end of the side guard 40 in this embodiment can be brought into contact with and separated from the support portion 7 of the back portion 6 by inserting / removing the guard connecting pin 44. for that reason,
The cover 12 can be improved in aesthetics without forming a joint, and the cover 12 can be easily removed from the seat body 3. It is also possible to apply this configuration to a child seat that cannot be put into a baby car state or a stroller that cannot be put into a child seat state.

In this embodiment, the infant safety sheet 1 is used.
In the child seat state, the operator grips the left and right side guards 40 and operates the lock release lever 51. In this state, when the infant safety seat 1 is lifted by holding the side guard 40, the rear arm lock 113 and the lock arm 89 are unlocked, and the infant safety seat 1 can be brought into a stroller state.

In addition to this, a lock release lever 51 is provided on only one of the side guards 40.
The rear arm lock 113 and the lock arm 89 may be unlocked by operating 1.

In this embodiment, the infant safety sheet 1 is used.
When the car is in the child seat, the lever arm 1
The reference numeral 28 is configured to abut the regulation pin 85 and be located above the rear caster 111. This regulation pin 85
Alternatively, the rotation restricting operation lever 218 provided on the rear caster 111 may be used to restrict the rotation of the lever arm 128.

In the present embodiment, the lightening hole 70 is formed in the base body 2 of the infant safety seat 1 which changes its form between the child seat state and the stroller state. However, this lightening hole is formed in the base body simply provided in the child seat. It is also possible to form the hole 70. Further, the horizontal frame 71 formed by forming the lightening hole 70 can be curved upward similarly to the above embodiment.

Furthermore, it is possible to form the sheet receiving portion 104 on the base body of a simple child seat.
In this embodiment, the hook 34 for hanging the seat belt 231 and the pair of belt supporting pieces 25a, 25b for supporting the upper side of the back portion 6 are provided on the infant safety seat that changes its form between the child seat state and the stroller state.
The hook 34 may be provided on a simple child seat.
Further, the belt support piece 25a,
25b may be provided.

Although the side guard 40 is provided on the seat body 3 of the infant safety seat 1 of this embodiment, the side guard 40 and the grip portion 240 may be provided or formed on a simple child seat.

Further, the side guard 40 whose one end comes in contact with and separates from the support portion 7 of the seat body 3 is a simple child seat.
It is also possible to provide. Also in this case, it is not necessary to form a seam in the cover attached to the child seat, the cover can be removed from the child seat, and the aesthetic appearance of the cover can be improved.

In the present embodiment, the base body 2 and the leg portions 4 are provided.
However, in addition to this, it is possible to omit the base body 2 and directly provide the seat body 3 with the leg portion 4 having the same configuration as the above-described embodiment.

In this embodiment, the footrest 102 is integrally formed at the tip of the base body 2, but the reinforcement rod 235 shown in FIGS. 64 and 65 may be provided with a footrest separately.
Further, the front casters 106 and the rear casters 111 of the present embodiment are not applied only to the infant safety seat 1 that changes its form to the child seat state or the stroller state, but may be simply applied to the caster of a trolley or a simple stroller. .

Further, in the present embodiment, the frant caster arm 105 and the rear caster arm 110 are rotated in opposite directions, and the frant caster arm 105 and the rear caster arm 110 are crossed with each other on the side portion of the seat body 3. It was stored in the storage position. This is the Frant caster arm 105 and the rear caster arm 1
The front caster arm 105 may be housed on the side of the seat body 3 and the rear caster arm 110 may be housed behind the front caster arm 105 by rotating the 10 in the same direction. Even in this case,
When the front caster arm 105 and the rear caster arm 110 are located at the accommodation position, the protection guide covers 183 and 207 are respectively attached to the front caster arm 1.
05 and the rear caster arm 110, it is possible to receive water and mud from the front caster arm 105 and the rear caster arm 110.

Further, in this embodiment, the front casters 106 and the rear casters 111 are housed at the housing positions on the left and right outer side portions of the support portion 7 in the seat portion 5. At this time, the lever arm 128, the connecting rod 120, and the protective cover 150 prevent the front caster 106 and the rear caster 111 from easily contacting. In addition to this, cover members are separately provided on the left and right outer side portions of the support portion 7 as necessary, and the front caster 106 and the rear caster 11 are provided.
1 may be covered.

Furthermore, in this embodiment, the seat belt 231 is previously connected to the seat belt connecting device 233 in a state where there is nothing on the vehicle seat 230, and as shown in FIG. 62 or FIG. The infant safety seat 1 may be placed and the seat belt 231 may be hooked on the left and right hooks 34 and the through grooves 23a and 23b. That is, when the infant safety seat 1 and the vehicle seat 230 are fixed to each other on the vehicle seat 230 with the infant safety seat 1 and the vehicle seat 230 facing each other, this suspension method is used to secure the back of the vehicle seat 230 and the infant safety seat 1. The present invention can be applied to any case in which the infant safety seat is fixed on the vehicle seat 230 in a state where the back portion and the back portion overlap each other.

Further, according to this latching method, it is not necessary to pull out the seat belt 231 from the winding device of the center pillar, and the seat belt 23 can be removed once.
The child safety seat 1 can be fixed immediately by simply hanging 1. Further, it is convenient not to disconnect the seat belt 231 each time the infant safety seat 1 is unloaded from the automobile, and the infant safety seat 1 can be easily removed.
Can be removed. Furthermore, a safety sheet for infants 1
The seat belt 2 with the vehicle placed on the vehicle seat 230.
When the connection between the seat belt 31 and the seatbelt connecting device 233 is released, the buckle of the seatbelt 231 vigorously returns to the door side due to the winding force, which hinders the work of lowering the infant safety seat 1. To do. However, since the seat belt 231 is removed from the vehicle seat 230 while being connected to the seat belt connecting device 233, this problem can be solved.

[0253]

As described above in detail, according to the present invention, there is an excellent effect that a baby seat that can be easily fixed to a seat of an automobile or the like can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of a baby safety seat according to the present invention in a stroller state.

FIG. 2 is a side view of the infant safety seat in a stroller state.

FIG. 3 is a bottom view of the infant safety seat in a stroller state.

FIG. 4 is a front view of the infant safety seat in a stroller state.

FIG. 5 is a rear view of the infant safety seat in a stroller state.

FIG. 6 is a side view of the child safety seat in a child seat state.

FIG. 7 is a front view of the child safety seat in a child seat state.

FIG. 8 is a rear view of the child safety seat in a child seat state.

FIG. 9 is a bottom view of the child safety seat in a child seat state.

FIG. 10 is a plan view of the child safety seat in a child seat state.

FIG. 11 is a perspective view showing a configuration of a seat body.

FIG. 12 is a perspective view showing each component attached to the seat body.

FIG. 13 is a partial plan view showing a state in which a reinforcing plate is attached to a pair of belt support pieces.

FIG. 14 is a partial plan view showing a hook attached to the seat body.

FIG. 15 is a partial cross-sectional view showing a connection structure between a side guard and a connection piece of a support portion at a back portion and a hole of a cover.

FIG. 16 is a side view showing a configuration of a side guard.

FIG. 17 is a cross-sectional view showing the structure of a side guard.

FIG. 18 is a partial cross-sectional view showing that the side guard and the connecting piece are connected by a guard connecting pin.

FIG. 19 is a partial cross-sectional view showing a connected state of a front guard and a side guard.

FIG. 20 is a partial cross-sectional view showing a state in which a reinforcing plate is attached to a pair of belt support pieces.

FIG. 21 is a perspective view showing a state in which the other end of the side guard is separated from the support portion in the back portion.

FIG. 22 is a partial plan view showing the configuration of the base body.

FIG. 23 is a partial plan view showing the configuration of the base body.

FIG. 24 is a side view showing the configuration of the base body.

FIG. 25 is a side sectional view showing a configuration of a base body.

FIG. 26 is a side sectional view showing the structure of the base body.

FIG. 27 is an explanatory view showing a state in which the reclining rod is engaged with the rod engaging recess of the rod locking piece.

FIG. 28 is an explanatory view showing a state in which the reclining rod is pulled out from the rod engaging recess of the rod locking piece.

FIG. 29 is a partial cross-sectional view showing the structure of the lock arm provided on the base body.

FIG. 30 is a partial cross-sectional view showing a state where the lock arm is pushed up by the rear arm lock.

FIG. 31 is a partial cross-sectional view showing a state in which the tip of the lock arm and the rear arm lock are engaged with each other.

FIG. 32 is a partial cross-sectional view showing a state where the engagement between the tip of the lock arm and the rear arm lock is released by the rotation of the lock arm.

FIG. 33 is a partial cross-sectional view showing a state in which the front caster arm and the auxiliary pipe and the rear caster arm and the auxiliary pipe are connected and fixed in the base body.

FIG. 34 is a partial perspective view showing a state in which the front caster arm and the auxiliary pipe are connected and fixed in the base body.

FIG. 35 is a partial side view showing a state in which the front caster arm and the rear caster arm are in a stroller state and are locked by the connecting rod and the lock member.

FIG. 36 is a partial plan sectional view showing a connecting structure of a connecting rod and a lock member.

FIG. 37 is a partial side sectional view showing the configurations of the connecting rod and the lock member.

FIG. 38 is a partial perspective view showing the engagement relationship between the lock sliding member and the lock member in the connecting rod.

FIG. 39 is a partial side cross-sectional view showing the engagement relationship between the lock sliding member and the lock member in the connecting rod.

FIG. 40 is a partial side sectional view showing a state where the engagement between the lock sliding member and the lock member in the connecting rod is released by the lever arm.

FIG. 41 is a partial side sectional view showing a state in which the engagement between the lock sliding member and the lock member in the connecting rod is released by the lever arm.

FIG. 42 shows a state where the lever arm is lifted to rotate the connecting rod and the lock member around the connecting support pin, and the front lock arm and the rear lock arm are folded to change the infant safety seat to the child seat state. It is a partial side sectional view.

FIG. 43 is a partial side view showing that the infant safety seat is changed to a child seat state, the lever arm rotates above the rear caster, and the rotation is restricted by a restriction pin.

FIG. 44 is a partial side cross-sectional view showing that the infant safety seat has changed to a child seat state, the lever arm rotates above the rear caster, and the rotation is restricted by a restriction pin.

FIG. 45 is a partial side view showing the configuration of the front caster.

FIG. 46 is a partial side cross-sectional view showing the configuration inside the front caster.

FIG. 47 is a partial side cross-sectional view showing a state in which the front caster bracket is sunk between a pair of front tires by the operation of the suspension arm.

FIG. 48 is a partial side view showing a state in which the front caster is prevented from turning due to the engagement relationship between the turning lock arm and the turning restriction protrusion.

FIG. 49 is a partial side view showing a state in which the front caster can be turned by disengaging the turning lock arm and the turning restriction protrusion.

FIG. 50 is a side view of the front caster bracket.

FIG. 51 is a partial cross-sectional view showing the shape of the protection guide cover formed on the front caster bracket.

52 is a partially cutaway front view showing the shape of the wheel of the front tire. FIG.

FIG. 53 is a side view showing the configuration of the rear caster.

FIG. 54 is a partial side sectional view showing the configuration of the rear caster.

FIG. 55 is a partial side cross-sectional view showing a state in which the rear caster bracket is sunk between the pair of rear tires by the operation of the suspension arm.

FIG. 56 is a partial side cross-sectional view showing a state in which the lock pin of the rotation restricting member is not fitted in the engagement recess of the rotation lock portion.

FIG. 57 is a partial side sectional view showing a state in which the lock pin of the rotation restricting member is fitted in the engagement recess of the rotation lock portion.

58 is a cross-sectional view taken along the line AA in FIG. 57.

FIG. 59 is a side view of the rear caster bracket.

FIG. 60 is a partial cross-sectional view showing the shape of a protection guide cover formed on the rear caster bracket.

FIG. 61 is a partially cutaway front view showing the shape of the wheel of the rear tire.

FIG. 62 is a perspective view showing a state in which a child safety seat in a child seat state is mounted so as to face a vehicle seat.

FIG. 63 is a perspective view showing a state in which a child safety seat in a child seat state is mounted so as to correspond to the orientation of the vehicle seat.

FIG. 64 is a partial perspective view showing another example in which a reinforcing rod is provided on the front caster arm.

FIG. 65 is a partial side view showing that the reinforcing rod provided on the front caster arm is housed in the housing space of the base body.

FIG. 66 is a perspective view showing another example of the shape of the seat body.

FIG. 67 is a perspective view showing another example of the shape of the seat body.

FIG. 68 is a perspective view showing another example of the shape of the seat body.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Infant safety seat as a child seat, 3 ... Seat body, 5 ... Seat portion, 6 ... Back portion, 7 ... Support portion, 20 ...
A protrusion as a belt engaging member, 34 ... a hook as a hook member, 37 ... a belt engaging portion, g ... a gap.

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[Procedure amendment]

[Submission date] February 21, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of Invention] Infant seat

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infant seat for mounting an infant on an automobile, and more particularly to an infant seat which can be easily attached to an automobile seat.

[0002]

2. Description of the Related Art Generally, a car seat is designed based on an adult's physique, and when a small infant sits down, the position of the body is lowered and the seat belt is used to hold the body firmly. It was difficult to do. Therefore, an auxiliary seat (child seat) is placed on a normal seat so that the infant can firmly hold his / her body when sitting.

Further, there has been proposed a seat which can be used as a stroller, that is, a child seat having the functions of both a child seat and a stroller. For example, in Japanese Utility Model Publication No. 55-10175, an existing adult safety belt 3 should be inserted in order to hold a child safety seat A composed of a protective seat 1 and a support 2 on an existing seat B. There is disclosed a structure which is integrally formed with a gap left and is held on a seat B by an adult safety belt 3 including an adult emergency lock retractor 4 and a buckle 5.

[0004]

However, the task of inserting the automobile seat belt (adult safety belt) into the space formed between the protective seat and the support is troublesome and time-consuming, and is safe for infants. There is a problem that workability for fixing the seat to the automobile seat is poor. Similarly, when removing the infant safety seat from the automobile seat, it is necessary to pull out the seat belt from the passage hole, which requires a lot of time and labor, resulting in poor workability.

In order to solve the above problems, the present invention aims to solve the above-mentioned problems by using a seat belt equipped on the seats of various vehicles such as automobiles, which can be easily fixed to the seats of infants. To provide a seat.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 has hook members for hooking a belt on both sides of a seat body, and an opening portion for inserting a belt faces upward. It is the gist to have established so as to become.

The gist of the invention according to claim 2 is that in the invention according to claim 1, the hook members are provided on both sides of a seat portion and a back portion of a seat body. Claim 3
In the invention described in claim 1 or 2, the gist of the invention is that an engaging portion for engaging a belt is provided on the upper back surface of the back portion.

A fourth aspect of the invention is characterized in that, in the third aspect of the invention, the hooking portion is formed by a lateral H-shaped groove.

[0009]

Therefore, according to the first aspect of the invention, when the infant seat is fixed to the seat of the automobile, the seat belts of the automobile or the like are opened to the hook members provided on both sides of the seat body. Insert from the part and hang it. At this time, the open portion is directed upward, and the seat belt is inserted from above and hooked on the hook member, and then is routed downward.

According to the second aspect of the present invention, in the first aspect of the invention, when the infant seat is fixed while facing the automobile seat, the infant seat is provided on both sides of the seat portion of the seat body. By hooking the seat belt of the automobile on the hook member, the infant seat is fixed to the seat of the automobile. When the infant seat is fixed in the same direction as the automobile seat, the infant seat is fastened by hooking the seat belts of the automobile to hook members provided on both sides of the back of the seat body. Is fixed to the car seat.

According to a third aspect of the present invention, in the first or second aspect of the present invention, since the belt hooking portion is provided on the upper portion of the back portion, the infant seat is provided with the hooking portion. ,
The seat belt is fixed to the seat of the automobile at three points with hook members on both sides of the seat body.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the hooking portion is formed by a lateral H-shaped groove, and the seat belt is formed by a lateral H-shaped vertical groove. It is inserted into the groove of the pair of lateral portions through the and is hooked to the hooking portion.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIG. 1, a baby safety seat 1 as a baby seat of this embodiment includes a resin seat body 3 provided on a resin base body 2 and legs provided on the base body 2. 4 and. The seat body 3 is attached to the base body 2 so as to be reclining at a predetermined angle.

The leg portion 4 is provided with a front caster arm 5 and a rear caster arm 6 formed in a U-shape, and the front and rear caster arms 5 and 6 are rotatable to the front side and the rear side of the base body 2, respectively. Has been inserted into. A front caster 8 having a front tire 7 is attached to the tip of the front caster arm 5. A rear caster 10 having a rear tire 9 is attached to the tip of the rear caster arm 6. Further, a lock member 11 is fixed to the rear caster arm 6, and the front caster arm 5 and the lock member 11 are connected by a connecting rod 12.

A lever arm 13 is rotatably attached to the connecting rod 12. Then, by operating the lever arm 13, the lock member 11 and the connecting rod 12 are rotated, so that the leg portion 4 moves the caster arms 5, 6 shown in FIG.
2 are positioned at a traveling position in which the casters are erected and a storage position in which the caster arms 5 and 6 shown in FIG. 2 are rotated inward. That is, this infant safety sheet 1
When the leg 4 is in the traveling position, it is used as a stroller, and when the leg 4 is in the storage position, it is used as a child seat.

As shown in FIGS. 1 and 3, the seat body 3 is formed by integrally forming a seat portion 15 and a back portion 16 provided on the rear side of the seat portion 15 in a curved shape. There is. Support portions 17 are integrally formed on both the left and right sides of the seat portion 15, facing upward, and on the left and right sides of the back portion 16, facing the front side of the seat body 3. The support portion 17 covers the front caster 8 and the rear caster 10 at the accommodation position.

A known child belt connecting device 18 is provided at the center of the seat portion 15 of the seat body 3. A sub belt 19 is provided near the boundary between the seat portion 15 and the support portion 17, and the sub belt 19 is connected to the child belt connecting device 18. Further, a belt device having a publicly-known emergency lock retracting mechanism (not shown) is provided on the back surface of the seat portion 15, and a pair of main belts 20 extending from the belt device are provided through a belt through hole 21 of the back portion 16 of the seat body 3. Connected to the child belt connecting device 18.

The sub-belt 19 and the main belt 20 can be detached from the child belt connecting device 18 by operating a press switch (not shown) provided in the child belt connecting device 18. Further, three belt through holes 21 through which the main belt 20 is inserted are formed in each of the right and left vertical directions of the back portion 16. Further, a cloth-made cover 22 having a cushioning property is attached to the surface of the seat body 3.

Further, on both left and right sides of the seat portion 15, there are integrally formed projections 23 which also serve as reinforcements of the seat body 3 which project to the rear side on the left and right sides of the back portion 16, respectively. A bulging portion 24 projecting to the back side is formed in the center of the seat portion 15 on the front side. The bulging portion 24 accommodates a mounting bracket (not shown) of the belt connecting device 18, which is used to connect the belt. The device 18 is fixedly attached to the seat 15.

As shown in FIG. 3, a pair of pipe insertion holes 25 are formed in the upper portion of the back portion 16 of the seat body 3. A handle 26, which is bent and formed in a U shape as shown in FIG. 4, is inserted into the pipe insertion hole 25 from the rear side of the back portion 16. The handle 26 is attached to the upper portion of the back portion 16 by a handle attachment bracket 26 a provided on the front surface side of the back portion 16. Then, the handle 26 slides along the inclination of the back portion 16, projects above the back portion 16 or sinks into the rear side of the back portion 16.

Further, on the upper portion of the back portion 16, there is formed a quadrangular protruding portion 27 which is recessed on the rear side. This protrusion 2
A pair of through grooves 30a and 30b that are parallel to each other are formed on the back plate 28 and the bottom plate 29 that form the No. 7 structure, respectively. Further, the connection groove 3 is formed so as to connect substantially the centers of the pair of through grooves 30a and 30b from the back plate 28 to the bottom plate 29.
1 is formed. That is, a lateral H-shaped groove is formed by the through grooves 30a and 30b and the connection groove 31. The through grooves 30a and 30b and the connecting groove 31 form a pair of belt support pieces 32a and 32b as hooking portions on the back plate 28 and the bottom plate 29 of the protrusion 27.

As shown in FIGS. 5 and 6, the belt support piece 3
A plurality of tooth portions 33 projecting into the through groove 30b are integrally formed on the 2a and 32b. A reinforcing plate 34 is attached and fixed to the bottom plate 29 and the pair of belt supporting pieces 32a and 32b. The reinforcing plate 34 has a through groove 30b.
Also, a guide groove 35 is formed to match the connection groove 31. Therefore, the pair of belt support pieces 32 a and 32 b are reinforced by the reinforcing plate 34.

As shown in FIGS. 3 and 4, mounting pedestals 40 are formed in the protrusions 23 on the lower left and right sides of the back portion 16. Further, the support portion 1 adjacent to the mounting base 40
A hook insertion hole 41 is formed on the side surface of 7. Similarly, mounting pedestals 42 are formed on the left and right sides of the seat portion 15 on the front side. Further, a hook insertion hole 43 is formed on the side surface of the support portion 17 adjacent to the mounting base 42.

A hook 44 as a metal hook member is provided on the mounting bases 40 and 42, and the hook 44 is mounted and fixed to the mounting bases 40 and 42 by a screw 45. As shown in FIG. 7, the hook 44 is attached to the mounting base 4.
0, 42, and a belt engaging portion 47 protruding to the outer side surface of the support portion 17 via the hook insertion holes 41, 43. Further, a predetermined gap is formed between the belt engaging portion 47 and the outer side surface of the support portion 17. Then, the hook 44 is attached and fixed to the mounting pedestals 40 and 42 so that the upper side of the gap is always opened, and the belt engaging portion 47 has a semi-arcuate belt engaging protruding portion 48 protruding toward the gap side integrally with the tip end of the belt engaging portion 47. Has been formed. (Hereinafter, the hook 44 fixed to the mounting base 42 will be referred to as "front hook 44", and the hook 44 fixed to the mounting base 40 will be referred to as "rear hook 44".) Is connected to a curved side guard 49 made of resin.

The infant safety seat 1 thus constructed
Is a vehicle seat (hereinafter, as shown in FIG. 8 or 9).
It is mounted on a car seat) S. That is, FIG. 8 shows an example in which the infant safety seat 1 is mounted and used while facing the automobile seat S. In this case, for example, an infant up to the age of 1 is placed on the infant safety seat 1.

In this case, the seat belt B extending from the lower side of the door (not shown) is hooked on one of the front hooks 44 with a gap, and the back surface of the seat portion 15 positioned below the front hook 44 is passed. Then, the seat belt B is hooked on the other front hook 44 with a gap, and the seat portion 1 is fastened.
The connection fitting B1 located below 5 is routed and connected to the seat belt connection device B2.

Further, the seat belt B is drawn around the back surface of the back portion 16, passes through the through grooves 30a and 30b, and is introduced into a winding device of a center pillar (not shown). For this reason,
The seat belt B is hooked on the pair of belt support pieces 32a and 32b.

Therefore, the infant safety seat 1 can be mounted so as to easily face the vehicle seat S by the pair of front hooks 44. Further, FIG. 9 shows an example in which the infant safety seat 1 is used in the same direction as the automobile seat S. This is a case where, for example, an infant aged 1 to 4 is placed on the infant safety seat 1.

In this case, the seat belt B extending from the lower side of the door (not shown) is hooked on one rear hook 44 with a gap, and the back surface of the back portion 16 is passed. And
The seat belt B is hooked on the other rear hook 44 via a gap, and the connection fitting B1 is routed and connected to the seat belt connecting device B2 located below the rear hook 44. Further, the seat belt B passes through the through grooves 30a and 30b and is introduced into a winding device of a center pillar (not shown). Therefore, the seat belt B is a pair of belt support pieces 3
It can be hooked on 2a and 32b.

Therefore, the infant safety seat 1 can be easily mounted in the same direction as the automobile seat S by the pair of rear hooks 44. As a result, infant safety sheet 1
When attaching the seat belt B to the vehicle seat S, the seat belt B may be hooked on the hook 44 aligned with the direction.

At this time, the seat belt B has the hook 44.
It suffices to insert the child safety seat 1 into and out of the automobile seat S by simply inserting it into the gap from the open upper side. Moreover, hook 4
Since the seat belt B hooked on 4 is routed downward, it does not come off from the opened portion of the hook 44 into which the seat belt B is inserted.

Further, in the state of FIG. 8, when a shock is given to the infant safety seat 1, the back portion 16 tries to move forward. At this time, since the seat belt B is hooked on the pair of belt support pieces 32a and 32b, the back portion 1
6 is wholly supported by the seat belt B. As a result, the infant safety seat 1 can be more reliably supported by the seat belt B.

Further, in the state of FIG. 9, when the infant safety seat 1 is impacted, the back portion 16 tries to move to the front side. At this time, since the seat belt B is hooked on the pair of belt supporting pieces 32a and 32b, the back portion 16 is supported by the seat belt B so as not to move to the front side. At this time, even if a strong impact is applied to the belt supporting pieces 32a and 32b by the seat belt B, the belt supporting pieces 32a and 32b are reinforced by the reinforcing plate 34 and are not damaged. As a result,
The infant safety seat 1 can be more reliably supported and fixed by the seat belt B.

The present embodiment is applied to the infant safety seat 1 used as a stroller when the leg 4 is in the traveling position and as a child seat when the leg 4 is in the storage position. This may be applied to a stroller that cannot be used as a child seat or a child seat that cannot be used as a stroller.

The side guard 49 of this embodiment may be integrally formed with the seat body 3. Further, in this embodiment, the leg portion 4 may be directly provided on the seat body 3 without using the base body 2.

Further, the seat belt B is attached to the infant safety seat 1.
For example, as a method for locking the seat belt B, the seat belt B is connected to the seat belt connecting device B2 in a state where there is nothing on the automobile seat S in advance, and as shown in FIG. 8 or FIG. Place the seat 1 on the left and right hooks 4
The seat belt B may be fastened to the 4 and the through grooves 30a and 30b. That is, when the infant safety seat 1 and the automobile seat S are fixed to each other on the automobile seat S with the infant safety seat 1 and the automobile seat S facing each other,
With the car seat S and the infant safety seat 1 oriented in the same direction as each other, the infant safety seat 1 is attached to the car seat S.
It can be applied to both cases of fixing on top.

By the way, the seat belt devices of most automobiles at present are equipped with a winding device. For this reason,
When the seat belt B and the seat belt connecting device B2 are not connected, the buckle of the seat belt B is urged toward the door, and the infant safety seat 1 is placed on the automobile seat S, or There is a problem that the buckle interferes with loading and unloading work when it is removed. Therefore, for example, in the present embodiment, the seat belt B and the seat belt connecting device B2 are connected in advance in a state where there is nothing on the automobile seat S, and the child safety is shown on the seat belt B as shown in FIG. 8 or 9. The seat 1 is placed and the seat belt B is hooked on the left and right hooks 44 and the through grooves 30a and 30b. This hooking method can also be applied when fixing the infant safety seat in either the front or rear direction, and there is no need to pull out the seat belt B each time it is placed, and it is easy to remove and the buckle can be worked. It is convenient because it does not come back to the car side (door side).
This is especially advantageous for the infant safety seat 1 that is frequently loaded and unloaded as in this embodiment.

[0038]

As described above in detail, according to the invention described in claim 1, the seat belts provided on the seats of various vehicles such as automobiles are used to easily provide the infant seats to the seats of the vehicles. There is an excellent effect that can be fixed. Further, according to the second aspect of the present invention, the seat belt of the vehicle is hooked on the hook member depending on the orientation of the infant seat, so that the vehicle seat is adapted to the orientation change of the infant seat. The infant seat can be fixed. In addition, according to the third aspect of the invention, since the infant seat is hung at the vehicle seat belt at three points, the infant seat can be fixed to the vehicle seat in a more stable state. You can Further, according to the invention of claim 4, since the hooking portion is formed by the lateral H-shaped groove, the seat belt of the vehicle can be easily hooked, and the infant seat can be smoothly mounted on the vehicle. It can be fixed to the seat.

[Brief description of drawings]

FIG. 1 is a perspective view of a baby safety seat according to the present invention in a stroller state.

FIG. 2 is a side view of the child safety seat in a child seat state.

FIG. 3 is a perspective view showing a configuration of a seat body.

FIG. 4 is a perspective view showing each component attached to the seat body.

FIG. 5 is a partial plan view showing a state in which a reinforcing plate is attached to a pair of belt support pieces.

FIG. 6 is a partial cross-sectional view showing a state in which a reinforcing plate is attached to a pair of belt support pieces.

FIG. 7 is a partial plan view showing a hook attached to the seat body.

FIG. 8 is a perspective view showing a state in which a child safety seat in a child seat state is mounted so as to face a vehicle seat.

FIG. 9 is a perspective view showing a state in which a child safety seat in a child seat state is mounted in the same direction as the vehicle seat.

[Explanation of reference numerals] 1 ... Safety sheet for infants as infant seat, 3 ... Seat body, 15 ... Seat portion, 16 ... Back portion, 30a, 30b ... Through groove as groove, 32a, 32b ... As hooking portion Belt support piece, 44 ... A hook as a hook member.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 5]

[Figure 3]

[Figure 4]

[Figure 6]

[Figure 7]

[Figure 9]

[Figure 8]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Matsumoto 2-chome Toyota-cho, Kariya-shi, Aichi Stock company Toyota Industries Corporation (72) Inventor Kazuhiro Sasaki 2-chome Toyota-cho, Kariya-shi, Aichi Stock Company Toyoda Loom Works (72) Inventor Kazuma Okumura 2-chome Toyota Town, Kariya City, Aichi Stock Company Toyota Loom Works (72) Inventor Kazuo Sato 1 Shimizu, Kitazaki-cho, Obu City, Aichi Prefecture 3 Izumi Industry Co., Ltd. (72) Inventor Masaaki Toya 4-20 Terabe-dori, Minami-ku, Aichi Prefecture Nagoya 1 Lehman Co., Ltd.

Claims (3)

[Claims] 1. A seat for a baby comprising a seat portion, a back portion integrally formed on the rear side of the seat portion, and support portions integrally formed on both left and right sides of the seat portion and the back portion. The hook of the support portion includes a protrusion protruding from the outer surface of the support portion and a belt engaging portion extending upward from the protrusion and having a gap with the outer surface of the support portion. Infant seat with attached components. 2. The infant seat according to claim 1, wherein the hook member is provided on an outer surface of the support portion corresponding to the seat portion and an outer surface of the support portion corresponding to the back portion. 3. The infant seat according to claim 1, further comprising a belt support member formed on the upper portion of the back portion so as to have a horizontal gap in the left-right direction of the infant seat.