JP3105743B2 - Child seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat mounted on a seat cushion of a vehicle seat.

[0002]

2. Description of the Related Art Generally, a child seat is used to seat a child in a passenger seat or a rear seat of a vehicle. As a child seat, there is a child seat having a base portion and a child seat body (Japanese Utility Model Laid-Open No. 6-42464).

When the child seat is mounted on a vehicle seat, the base portion is first placed on the seat,
The seat belt is wrapped around the base and fastened to secure it. The child seat body is attached to the base portion so as to be reclineable and detachable.

As shown in FIG. 10, a headrest 2 is mounted on the child seat body 1 so that the height position can be adjusted. Therefore, the shell (skeletal member) 3 of the seat body is
The headrest shell 4 is slidably mounted in the height direction. Further, the headrest 2 is held at a required height position by a lock member. This lock member mounts the lock piece 6 in the lock piece holding portion 5 so as to be slidable in the vertical direction. The lock piece 6 can be engaged with an engagement opening (not shown) having a distal end portion opened at a predetermined position of the shell 3.
The rear end is cut off at the center, leaving the arms 7, 7 on both sides, to form a spring accommodating portion 8.

[0005] The inner surface at the tip end side in the spring accommodating portion 8;
A compression coil spring 9 is arranged between the lock piece 6 and the inner surface of the lock piece holding portion 5 to urge the lock piece 6 to be inserted into the engagement opening of the shell 3. Further, the free end portions of the two arms 7, 7 extend from the lock piece holding portion 5, and the pull lever 11 is attached by bridging a pin 10 between the arms 7, 7. Then, by pulling the pull lever 11, the lock piece 6 is pulled out from the engagement opening of the shell 3 to release the lock. The shell 3 is provided with engagement openings at a plurality of predetermined positions, and the headrest 2 can be adjusted to a desired height position by selectively engaging the lock pieces 6 with these engagement openings.

[0006]

In the conventional child seat as described above, when adjusting the height position of the headrest 2, the pull lever 11 is operated so as to be pulled rearward in the horizontal direction from the back of the headrest 2. I have to. However, the back of the headrest 2 is in a state of approaching the seat back of the vehicle seat. Therefore, a person who operates the headrest 2 needs to put his / her hand in the narrow space between the headrest 2 and the seat back, and pull the pull lever 11 toward the seat back to release the lock piece 6 from the engagement opening. Pull the lever 11 to the lock piece 6
When the pull lever 11 is pulled to the release position,
The pull lever 11 must be moved up and down even though there is almost no gap between the seat back and the seat back.

In view of the above, an object of the present invention is to provide a child seat in which the operation of adjusting the height position of the headrest of the child seat body is simple and easy.

[0008]

A child seat according to the present invention includes a base fixed on a vehicle seat and a child seat.
Slidably along the height of the shell of the
Drilled side by side at multiple places on the headrest and shell
Inserted into or separated from the plurality of engagement ports
Attach it to the headrest so that it can slide in the
Lock member and lock member are selected for each engagement opening of the shell
To hold the headrest at the required height
Symmetrical hypotenuses on the spring and the locking member
Each cam slope provided so that the child seat body
Are mounted so that they can move in the lateral direction, and approach each other
Move and tilt each camera
To slide the lock member off the engagement port
And a pair of release knobs for allowing the headrest to move up and down freely .

[0009]

According to the above-described structure, when performing the height adjustment operation of the headrest of the child seat body, the operator puts his hand on the back side of the headrest and releases the lock member holding the headrest. A pair of release knobs so as to pinch them with one hand so that they can be compressed. Then, the pair of release knobs move toward each other and release the lock member.

At the time of this release operation, the release knob moves in the horizontal direction along the surface direction of the child seat body, so that the distance between the release knob of the headrest and the seat back is not reduced, so that this operation is easy. Can be done.

When the height of the headrest is to be changed, the headrest can be moved up and down to a required position while holding the pair of release knobs in a sandwiched state. Can be easily moved up and down because it is not narrowed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a child seat according to the present invention will be described below with reference to FIGS. In FIGS. 1 to 9, parts corresponding to those in FIG. 10 described above are denoted by the same reference numerals, and are provided for convenience of explanation.

The child seat 12 is 6 months old to 1 month old.
It can be used as both an infant seat (abbreviated as IRS) for carrying infants under the age of one and a child seat (abbreviated as CRS) for carrying infants aged from one to four years of age. is there.

As shown in the figure, the child seat 12 has a base 15 and a child seat body 1 which is detachable from the base 15 and has a headrest 2.
And is constituted by. Hereinafter, the child seat body 1, the base 15, the headrest 2, and members related thereto will be described in this order.

[Explanation of the Child Seat Body 1] The child seat body 1 has a curved shell 3 that matches the average posture of a seated child. The shell 3 is made of a relatively high rigidity and made of resin. The shell 3 serves as a skeleton member of the child seat body 1.

A relatively thick cushion pad formed of urethane or the like and covered with a skin material is disposed on the lower surface of the shell 3. A relatively thin back pad formed of urethane or the like and covered with a skin material is disposed on the upper surface of the shell 3. Thereby, the seat back and the seat cushion are integrally formed. Further, in the child seat body 1, side support supports 16 are integrally formed on both lower sides of the shell 3. The side support support 16 has a webbing insertion hole 17.
Are formed, and a side support 18 for supporting both sides of the child's waist is fitted.

[Description of Base 15] On the other hand, as shown in FIG. 7, the base 15 has a base 19 which is a portion to be placed on a seat surface of a seat cushion 13 of a vehicle seat, and a rear end of the base 19. And an upright portion 20 which stands up from the portion and is pressed against the surface of the seat back 14. And the base 15 is a part where the base 19 and the upright part 20 meet,
The vehicle seat is fixed using a three-point webbing 21.

For this reason, recesses 22 and 23 are provided on the upper surface near both sides of the base 15, respectively.
Cantilever arm-shaped engaging pieces 22 and 23 projecting in the shape of a rectangular tongue piece protrude from the upper parts of the pieces 2 and 22.

Then, the webbing 24 on the wrap side is passed between the recesses 22 and 22 and the locking pieces 23 and
5 and engage the tongue plate with the buckle device to thereby attach the base 15 to the vehicle seat 1.
Fix to the seats 3 and 14. Further, the shoulder-side webbing 25 is housed so as to pass between the recesses 22 and the locking pieces 23 and 23 so as to overlap the lap-side webbing 24.

Thus, the shoulder side webbing 25
Can be arranged so as to overlap with the lap-side webbing 24 between the locking pieces 23, 23 regardless of the winding force of the winding device. In addition, since the base 15 is attached by the three-point webbing 21 by using these locking pieces 23, 23, the end of the shoulder-side webbing 25 is locked to the lap-side webbing 24 by a clip such as an E-shape. When the base 15 is attached, the troublesome work of shifting the position of the E-clip so as to deviate from the base 15 can be eliminated. The shoulder side webbing 25 is shown in FIG.
(Not shown) is guided to the winding device.

A pair of rails 26 are formed on both sides of the base 15. The rail 26 has a longitudinal direction curved at a predetermined angle. The pair of rails 26 is generally constituted by a roller guide 28 provided on the base 19 side of the base 15 and a rod guide 30 provided on the upright part 20 side of the base 15.

The pair of roller guides 28 of the base 15 support the above-mentioned pair of rollers (not shown) of the child seat body 1 fitted therein, and the pair of rod guides 30 support the child. The main body 1 is supported with a pair of rods (not shown) fitted therein. Note that the pair of rods are selectively engaged with the pair of rod guides 30, and the operation knob 31 may be pulled to release the engagement. With this configuration,
The child seat body 1 is relatively movable with respect to the base 15 along the pair of rail portions 26, and can be reclined at a predetermined angle.

When the child seat 12 is used as the infant seat, the child seat body 1 is detached from the base as shown in FIG. Is fixed to the seat cushion 13 of the vehicle seat so as to face the rear of the vehicle.

[Description of Headrest 2 and Related Members] As shown in FIGS. 1 to 6, the headrest 2 is disposed at the upper end of the shell 3 of the above-described child seat body 1.

The headrest 2 is attached to the shell 3 of the child seat body 1 so as to be slidable up and down along the height direction. The shell 3 is provided with a plurality of engagement ports 32, 33, 34, 3
5 is provided. Each engagement opening 32, 33, 34, 35 is a rectangular opening when viewed from the front (when viewed from the right in FIG. 1). Its vertical cross section has a trapezoidal shape as shown in FIG. 1, and its lower side 36 is formed at right angles to the side surface of the shell 3, and its upper side 37 faces rearward of the shell 3. It is formed obliquely so as to increase the vertical dimension.

In the headrest 2, each of the above-mentioned engagement openings 32,
A lock device 38 is provided for engaging with 33, 34, 35 to hold the headrest 2.

A locking device 38 is provided in a housing 39.
A lock member 40 and a pair of release knobs 41 and 42 are mounted. The lock member 40 includes the engagement ports 32, 33,
An engaging head 43 for engaging with each of the release knobs 34 and 35, and an interlocking opening 4 for interlocking with each of the release knobs 41 and 42, respectively.
It has a body part 46 provided with 4 and 45 and a spring engaging part 47.

The engaging head 43 has a horizontal side surface portion 48 corresponding to the lower side 36 of the engagement opening and a side 37 above the engagement opening.
And the oblique side surface portion 49 having a constriction corresponding to the above, and is fitted in each of the engagement ports 32, 33, 34, 35. Further, the oblique side portion 49 of the engaging head 43 is guided with respect to the oblique side 37 on the upper side of each engaging port, and
2, 33, 34, 35, the engagement head 43 can be fitted well. Further, each of the engagement ports 32, 33, 34, 35
In addition, when the engagement head 43 is inserted, the engagement between them can be made stronger by the wedge effect of the oblique side portion 49 to the oblique side 37.

The two interlocking openings 44 and 45 provided in the lock member 40 are rectangular cross-section openings, and are formed in the body of the lock member 40 in two upper and lower stages. As shown in FIGS. 2, 3, and 4, the interlocking openings 44, 45 are inclined with respect to the movement directions (directions of arrows A, B) of the release knobs 41, 42 toward each other. Cam slope 50,
51 are provided. In the drawing, the cam slope 50 of the upper interlocking opening 44 is formed on the oblique side approaching the horizontal side face 48 toward the back side in the insertion direction (arrow B direction) of the release knob 41,
In the figure, the cam slope 51 of the lower interlocking opening 45 is formed on the oblique side approaching the horizontal side face portion 48 toward the back side in the insertion direction (the direction of the arrow A) of the release knob 42, so that both are mirror symmetric. Constitute.

The lock member 40 is connected to each of the engagement ports 3 of the shell 3.
It is mounted in the housing 39 so as to be slidable with respect to 2, 33, 34, 35 in the direction of insertion or removal. The spring engaging portion 47 of the lock member 40 and the housing 3
9, a compression coil spring 53 is disposed between the compression spring 53 and the locking portion 40.
It is made to be urged in the direction which engages with the surface provided with 3, 34, 35.

The pair of release knobs 41 and 42 are each positioned in the lateral direction of the child seat body 1 with respect to the housing 39 (in this specification, the plane direction in which the seating surface of the child seat body 1 expands). , Which is perpendicular to the plane of the paper of FIG. 1).

Each of the release knobs 41 and 42 has a cam operating portion 54 at a portion facing each other, and forms a pushing end 55 at a portion facing outward. The cam operating section 54 of the release knob 41 is inserted in the direction of arrow B into the interlocking opening 44 located on the upper side of the above-described lock member 40 in the drawing to press the cam slope 50. The cam operating portion 54 of the other release knob 42 is inserted in the direction of arrow A into the interlocking opening 45 located on the lower side of the lock member 40 in the drawing, so as to press the cam slope 51. For this reason, each cam operating section 54 is provided with each interlocking opening 4
4 and 45 are formed in a plate shape having a thickness capable of being inserted into the plate, and further, a tip end portion 5 projecting a tip end of a planar triangular portion into a small rectangular shape.
6, 56. It is preferable that grease or the like be applied to each of the tip portions 56, 56 in order to smoothly contact the cam slopes 50, 51, respectively.

The push ends 55 of the release knobs 41 and 42,
55 is formed by recessing the free end surface thereof, and is configured such that the operator can easily push this end surface.

On the sides of the release knobs 41 and 42, projecting pieces 57 each having a triangular shape are projected, and each of the projecting pieces 57 slides in each groove 58 of the housing 39. The release knobs 41 and 42 are configured to prevent the release knobs 41 and 42 from coming off the lock position shown in FIG.

Next, the usage and operation of the child seat of the present embodiment configured as described above will be described.

After the operation of fixing the child seat 12 (infant seat or child seat) to the seat cushion 13 of the vehicle seat and the reclining operation are completed, the height of the headrest 2 is adjusted. To adjust the height of the headrest 2, the operator puts his hand on the back side of the headrest 2 and grasps a pair of release knobs 41 and 42 protruding from both sides of the central rectangular portion of the housing 39 as shown in FIG. Arrows A, B so that the pair of release knobs 41, 42 approach each other against the urging force of the spring 53.
Push operation in the direction. Thereby, a pair of release knobs 4
Reference numerals 1 and 42 move in the lateral direction of the child seat main body 1, and the distal end portions 56 of the respective cam operation sections 54 are respectively associated with the corresponding cam slopes 5.
0 and 51, the locking member 40 is brought into contact with FIG.
From the engaged lock position indicated by the solid line to the release position (FIG. 3) indicated by the two-dot chain line. In this release position, as shown in FIG. 5, the engagement head 43 of the lock member is disengaged from the engagement opening 32, and the headrest 2 is in an unlocked state in which the vertical movement of the headrest 2 is allowed.

The operator operates the release knobs 41, 4
The headrest 2 is moved up and down while pressing the button 2 to move it to the required position of the engaging openings 33, 34, 35, and then the hands are released from the release knobs 41, 42.

Then, the urging force of the compression coil spring 53 causes the lock member 40 to move from the release position shown in FIGS.
It is pushed forward to the locked position of FIGS. At the time of the operation of the lock member 40, the distal end portion 56 of the cam operation portion 54 that slides and interlocks with the cam slopes 50 and 51 is pushed in the lateral direction,
The pair of release knobs 41 and 42 move away from each other and automatically return to the initial locked position, and the height adjustment operation of the headrest 2 is completed.

Therefore, during the height adjustment operation of the headrest 2, even if the pair of release knobs 41 and 42 are operated,
Since the distance between these and the seat back 14 of the vehicle seat is not reduced, the operability of the lock device can be improved.

Since the upper ends of the engagement ports 32 and 43 are inclined, when the headrest 2 is lifted upward, the lock member 40 can be pulled out of the engagement port 32 without operating the release knobs 41 and 42. It is only necessary to perform the operation of lifting the headrest 2 because it is issued.

In the present invention, when a child seat is used as the infant seat, the distance between the headrest of the child seat body and the dashboard or the like in the vehicle compartment is reduced. Also in this case, there is an effect that the operation of adjusting the height of the headrest can be performed easily and with good operability as in the case where the child restraint system is used as the above-described child seat.

[0042]

According to the present invention, the operation of adjusting the height position of the headrest of the child seat body can be made simple and easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a child seat body according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG. 1, showing a lock device portion in a locked state.

FIG. 3 shows the part of the locking device in an unlocked state, FIG.
FIG. 2 is a sectional view taken along line I-II.

4 is an exploded perspective view of a main part of FIG. 2, showing a main part of a lock member and a pair of release knobs.

FIG. 5 is an enlarged longitudinal sectional view of FIG. 1 showing a lock device portion.

FIG. 6 is a schematic perspective view, partly in section, of a housing portion in which a locking device is housed.

FIG. 7 is a perspective view showing the child seat body and a base fixed to the vehicle seat in a separated state.

FIG. 8 is a perspective view showing a normal use state when the child seat of FIG. 7 is used as a child seat.

9 is a perspective view showing a use state when the child seat shown in FIG. 7 is used as an infant seat.

FIG. 10 is a cross-sectional view of a headrest portion of a conventional child seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Child's seat main body 2 Headrest 12 Child's seat 14 Seat back (vehicle seat) 15 Base (vehicle seat) 32-35 Engagement opening 38 Lock device 40 Lock member 41 Release knob 42 Release knob 43 Engagement head 50 Cam slope 51 Cam slope 56 Tip

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 6-42464 (JP, U) JP-A 62-188256 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60N 2/00-2/72

Claims (1)

(57) [Claims] And 1. A child seat body to be mounted on the vehicle seat, with respect to prior Symbol of the child seat body shell, along the height direction
A headrest slidably mounted on the shell, and a plurality of engagement openings formed in a plurality of positions in the shell.
And slide in the direction of inserting or removing from the plurality of engagement ports.
A lock member attached to the headrest so as to be free
And the lock member is selectively connected to each of the engagement ports of the shell.
Engage to hold the headrest at the required height
A spring urged in the direction, and the lock member are provided so as to have symmetric oblique sides.
Each of the cam slopes and the child seat body are mounted so as to be movable in the lateral direction,
Move in the direction of approaching each other,
Sliding contact with each cam slope inclined to
An operation of detaching the member from the engagement port is performed.
A pair of release knobs that allow the rest to move up and down freely
And a child seat comprising: