JPH0767892B2 - Restraint protection sheet for infants - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infant restraint protection sheet having at least a seat portion on which an infant sits.
Fixed on the seat by engaging the engaging means of the seat belt device, which is attached to the seat of the vehicle and has at least a seat belt and engaging means such as a tongue and a buckle, inside the seat portion. The present invention relates to a restraint protection sheet for infants.

[0002]

2. Description of the Related Art For example, in vehicles such as automobiles and airplanes, a restraint protection sheet for infants has been conventionally used in order to maintain the sitting posture of the infant while driving and to protect the infant from shock during acceleration and deceleration. ing. Such a child restraint protection sheet is reclinably attached to a base member, and a seat main body integrally formed with a seat portion on which an infant sits and a seat back portion on which the back of the infant seated on the seat portion is further formed. , And an infant seat belt device for restraining the infant. This infant seat belt device has an infant seat belt, a chest pad attached to the tip of the infant seat belt, a tongue provided at the tip of the chest pad, and a tongue engageably and disengageably engaged. It has a buckle. When the tongue of the infant seat belt is engaged with the buckle, the infant seated on the seat portion is restrained by the infant seat belt and the chest pad.

By the way, such a child restraint protection seat is fixed to the vehicle seat by a seat belt device attached to the seat of the vehicle and restraining an occupant sitting on the seat. That is, a large through hole that penetrates left and right is formed in the base portion of the child restraint protection sheet, and the tongue and the buckle of the seat belt are inserted into the through hole from the left and right of the child restraint protection sheet, By engaging the tongue and the buckle in the base portion, the child restraint protection seat is fixed to the seat of the vehicle.

[0004]

However, depending on the type of vehicle, there is a vehicle in which, for example, the width of the vehicle to which the restraint protection seat for infants is fixed, that is, the distance between the left and right side walls or the left and right armrests of the vehicle seat is small. . If the tongue and the buckle of the seat belt are inserted into the seat of such a vehicle from the left and right sides of the restraint protection sheet for a child as described above, and the tongue and the buckle are engaged in the base portion thereof, the infant Since the gap between the left and right end portions of the vehicle restraint protection seat and the left and right side walls of the vehicle seat or the left and right armrests becomes small, it is extremely troublesome to insert the tongue and the buckle into the through hole of the base portion. It becomes difficult to engage and disengage the tongue and the buckle. Therefore, there is a problem that it takes time to fix or release the restraint protection seat for infants on such a vehicle seat.

The present invention has been made in view of the above problems, and an object thereof is to provide a restraint protection sheet for infants which can be easily fixed and released from a vehicle seat. .

[0006]

In order to solve the above-mentioned problems, the invention of claim 1 is a restraint protection seat for infants which has at least a seat portion on which an infant sits, and which is attached to a vehicle seat. A restraint protection sheet for infants fixed on the seat by engaging the engaging means of the seat belt device having at least a seat belt and engaging means such as a tongue and a buckle inside the seat portion. In the above, at least a part of the upper portion of the seat portion is rotatably provided so that the inside of the seat portion can be opened.

According to a second aspect of the invention, the seat portion is
An upper member composed of a central portion on which the infant directly sits and left and right side walls formed on both left and right sides of the central portion, and a lower member supporting the upper member, and the upper member is rotatably provided. Is characterized by.

According to a third aspect of the present invention, a load transmitting portion is provided in a rotatable portion of the upper portion of the seat portion, and a load applied to the rotatable portion is passed through the load transmitting portion to the seat portion. It is characterized by being transmitted to the lower part of.

Further, the invention of claim 4 is characterized in that the load transmitting portion is a reinforcing rib for reinforcing the rotatable portion.

Further, in the invention of claim 5, a load transmitting portion is provided in a lower portion of the seat portion, and a load applied to a rotatable portion of an upper portion of the seat portion is applied to the seat portion via the load transmitting portion. It is characterized by being transmitted to the bottom.

[0011]

In the restraint protection sheet for infants according to the present invention having the above-mentioned structure, at least a part of the upper portion of the seat portion can be rotated to open the inside of the seat portion. Become. As a result, the engagement / disengagement operation of the engagement means of the seat belt device of the vehicle can be performed from above the front of the infant restraint protection seat. Therefore, even when the vehicle seat width is small, the child restraint protection seat can be easily fixed to the vehicle seat.

According to the second aspect of the present invention, the central portion of the upper portion of the seat portion, on which the infant is directly seated, and the left and right side walls formed on the left and right sides of the central portion are all rotatable. Become. Therefore, since the inside of the seat portion is completely opened, the handling of the seat belt becomes extremely easy.

Further, in the invention of claim 3, the load applied to the rotatable portion of the seat portion is transmitted to the lower portion of the seat portion via the load transmission portion. As a result, the load supported by the rotatable portion of the seat portion becomes small, and it is not necessary to increase the strength so much.

Further, in the invention of claim 4, since the rotatable portion of the seat portion is reinforced by the reinforcing rib, the rotatable portion of the seat portion has high strength.

Further, in the invention of claim 5, the load applied to the rotatable portion of the seat portion is transmitted to the lower portion of the seat portion via the load transmission portion. The movable part becomes relatively lightweight, and for engaging and disengaging the engaging means of the seat belt device of the vehicle,
The opening / closing operation of the rotatable portion of the seat portion becomes easy.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of a restraint protection sheet for infants according to the present invention by cutting out a left half thereof, and FIG. 2 is a left side view similarly showing this embodiment by partially cutting out.

As shown in FIGS. 1 and 2, in the present embodiment, the infant restraint protection sheet 1 is a seat portion 2 on which the infant sits, and is rotatably attached to the seat portion 2 so that the infant's back is covered. The seat back 3 which is more likely to be seated, a seat back rotation control device 4 for controlling the rotation of the seat back 3, an infant seat belt device 5 for restraining an infant sitting on the seat portion 2, and an infant baby seat belt device 5. The seat belt device 5 includes a shoulder belt adjuster device 6 for adjusting the vertical position of the shoulder belt 5a.

The seat portion 2 comprises a seat portion main body 7 and a base portion 8 which supports the seat portion main body 7. Figure 3
As shown in FIG. 4, the seat body 7 is composed of a central portion 9 on which the infant directly sits and left and right side walls 10 and 11 formed on both left and right sides of the central portion 9, which are integrally formed by a plastic shell. Has been done. A buckle 5d of the infant seatbelt device 5 and an operation lever 5 of the seatback rotation control device 4, which will be described later, are provided at the front of the central portion 9.
A first recessed fitting portion 12 for accommodating each of 5 is formed.

A second concave fitting portion 14 having a V-shaped cross section is formed in the center of the central portion 9 in the front-rear direction. This second concave fitting portion 14
A tongue 123 of a seat belt device for restraining an occupant of a vehicle seat 122, which is attached to a seat 122 of a vehicle such as an automobile or an aircraft and is also used to fix the infant restraint protection seat 1 to the seat of the vehicle. And buckle 1
24 comes to be located.

At the rear portions of the left and right side walls 10, 11, there are formed substantially circular rotation supporting portions 18, 19 for accommodating and supporting the rotating portion of the seat back rotation control device 4. A rotary shaft through hole 21 through which a rotary shaft 20 that rotatably supports the seat back 3 penetrates is formed in the center of each of the rotary support parts 18 and 19, and a lower part is formed in the lower part after that. A lock pin through hole 22 is formed through which a lock pin 56 (details will be described later) of the seat back rotation control device 4 that locks the seat back 3 at a set predetermined rotation position.

Further, a pair of grooves 23, 24, 25, 26 having a substantially V-shaped cross section, which open upward, are formed on the outer sides of the left and right side walls 10, 11 at positions corresponding to the second recessed fitting portions 14, respectively. There is. As will be described later, these grooves 23, 24, 2
When the left and right widths of the infant restraint protection seat 1 are considerably smaller than the width of the vehicle seat to which it is fixed, seat belts 131 attached to the vehicle seats 5 and 26 are provided.
Pair of protrusions 120 of the belt guide 120 for guiding the
c and 120d come to be supported at the time of use.

As shown in FIG. 5, the base portion 8 is also formed of a plastic shell, and a predetermined number of mounting portions 27 into which the seat portion body mounting screws are screwed are formed on the base portion 8. Has been done. Then, as shown in FIG. 2, the seat body 7 is screwed onto the base portion 8.
Is attached by screwing into the mounting portion 27. Further, on the left and right sides of the base portion 8, the belt guide 12 described above is provided.
A pair of belt guide through holes 29 and 30 are pierced so that the 0 rotation shaft 120b rotatably penetrates therethrough.

As shown in FIG. 6, the seat back 3 includes a seat back portion 31 for directly supporting the back of an infant, and left and right side walls 32 provided on both left and right sides of the seat back portion 31,
33 and is also formed by a plastic shell. The seat back portion 31 has a pair of parallelogrammatic guide holes 34, 3 extending vertically in the center thereof.
5 is drilled. The belt guides 1 in the shoulder belt adjuster device 6 are respectively provided in the guide holes 34 and 35.
01 is penetrated through, and the belt guide 101 is guided by the guide holes 34 and 35 and moved up and down.

In the vicinity of the seat back portion 31 of the left and right side walls 32, 33, mounting portions 38, 39, into which screws for mounting the upper bracket 50 (shown in FIG. 7) of the seat back rotation control device 4 are respectively screwed. 40,
41, 42, 43 are provided.

Further, at the lower ends of the left and right side walls 32, 33, substantially circular rotation support portions 46, 47 for accommodating and supporting the rotation portion of the seatback rotation control device 4 are formed. These pivotal support portions 46, 47 are provided at their central portions with a protrusion 1 at the central portion of a pivotal shaft cover 125 (shown in FIG. 1) described later.
Through holes 48 and 49 into which 25a is fitted are formed.

As shown in FIGS. 1 and 2, the seat back rotation control device 4 includes a right and left side walls 32, 32 of the seat back 3.
A pair of left and right upper brackets 50 attached to each of 33 and a pair of left and right lower brackets 51 attached to each of left and right side walls 10 and 11 of the seat body 7.
And a torsion spring 54 installed between the upper hook pin 52 attached to the upper bracket 50 and the lower hook pin 53 attached to the lower bracket 51.
An operating lever 55, a lock pin 56, a cam plate 57 that controls the movement of the lock pin 56 between a locked position and an unlocked position, and a cam plate 57 that constantly urges the cam plate 57 in the direction in which the lock pin 56 reaches the locked position. Biasing spring 97 and operating lever 5
5 and the cam plate 57, and an operation force transmission link 59 for transmitting the operation force of the operation lever 55 to the cam plate 57 against the urging spring force of the urging spring 97.

As shown in FIG. 7, the upper bracket 5
0 is formed in a flat plate shape and is composed of an upper rectangular portion 50a and a lower circular portion 50b. Rectangular part 50a
There are three screw holes 60, 61, 62 through which screws for attaching the upper bracket 50 to the seat back are formed in the vertical direction.

On the other hand, in the circular portion 50b, a hole 64 is formed at the center of the circular portion 50b through which the rotating shaft 20 is relatively rotatable, and in order to lock the seat back 3 at three reclining angles, Three lock holes 65, 66, 67 through which the lock pin 56 penetrates are respectively formed on the same circumference with a predetermined radius from the center of the hole 64. Further, in order to lock the seat back 3 in the folded position, a lock hole 68 through which the lock pin 56 penetrates is formed on the same circumference as the lock holes 65, 66 and 67.

As shown in FIG. 3B, these lock holes 65, 66, 67, 68 are formed in an oval shape having a minor axis f and a major axis g, in which case the minor axis f is a lock. The size of the pin 56 is set so that it can penetrate and slide with almost no gap. And each lock hole 65, 66, 67, 6
8, the minor axis f is in the circumferential direction of the circle concentric with the hole 64, and the major axis g
Are arranged in the radial direction of this concentric circle. Further, the rectangular portion 50 is provided with a guide hole 69 extending in the longitudinal direction thereof, and the guide hole 69 guides the guide 113 of the supporting means 102 for supporting the belt guide 101 up and down.

As shown in FIG. 1, the upper bracket 50 is fixed to the seat back 3 by passing screws through the screw holes 60, 61 and 62 and screwing the screws into the mounting portions 38, 39 and 40 of the seat back 3. To be done.

As shown in FIGS. 8 (a) and 8 (b), the lower bracket 51 has a semi-circular portion 51a formed at the upper portion thereof, and an attachment portion 51b screwed to the seat portion main body 7 at the lower portion thereof. Has been formed. A circular hole 73 is formed in the semi-circular portion 51a at the center of the semi-circular portion 51a. Further, the upper hook pin 52 penetrates the semicircular portion 51a, and a guide hole 74 for rotatably guiding the upper hook pin 52 when the seat back 3 is rotated is formed in an arc shape concentric with the hole 73. There is. Further, the lower bracket 51 is provided with a through hole 75 through which the lock pin 56 slidably penetrates. In that case, the length of the through hole 75 between the center of the through hole 75 and the center of the hole 73 is such that the lock holes 65, 66, 67 of the upper bracket 50.
Is provided at a position that is equal to the radius of the same circumference around the center of the hole 64 in which is provided. The upper bracket 50 is fixed to the seat body 7 with screws (not shown).

As shown in FIG. 1, the rotating shaft 20 penetrates through the hole 73 of the lower bracket 51 fixed to the seat body 7 and is supported by the lower bracket 51.
The upper bracket 50 fixed to the seat back 3 is located outside the lower bracket 51, and is rotatably supported by penetrating the hole 64 in the rotating shaft 20. In that case, the retaining ring 77 prevents the upper bracket 50 from coming out of the rotary shaft 20, and the cover 78 of the rotary shaft 20 has its protrusion 78.
The a is fitted in the through hole 48 of the seat back 3 and is attached so as to cover the rotary shaft 20 by screwing a screw into the end of the rotary shaft 20. Also, the upper bracket 5
The upper hook pin 52 fixed to 0 extends through the guide hole 74 of the lower bracket 51 to the inside of the lower bracket 51, and the rotation support portion 1 of the seat body 7 is provided.
It will be located within 8,19.

A torsion spring 54 is installed between the upper hook pin 52 and the lower hook pin 53 fixed to the lower bracket 51. In this way, the seat back 3 is attached to the seat body 7 so as to be rotatable around the rotation shaft 20. In that case, depending on the rotational position of the seat back 3, the lock holes 65, 66,
One of 67 and 68 comes to align with the through hole 75 of the lower bracket 51.

As shown in FIG. 9, the operating lever 55 is arranged in the recessed fitting portion 12 of the seat body 7, and the operating lever 5 is provided.
It is composed of an operating portion 55a for operating 5 and a connecting portion 55d to which the operating force transmission link 59 is connected.

As shown in FIG. 10, the lock pin 56 is formed of a round bar, and one end thereof is bent at a right angle to form a cam follower portion 56a. The cam follower portion 56a is fitted in the cam holes 80, 81 (shown in FIG. 11) of the cam plate 57, and the movement of the cam plate 57 causes the cam hole 80, 81 to move.
It is designed to be moved by being guided by 81. Also,
A lock portion 56b is formed at the other end of the lock pin 56, and the lock pin 56 has a cam hole 8a.
The upper bracket 50 and the lower bracket 51 are locked by passing through one of the lock holes 65, 66, 67, 68 of the upper bracket 50 and the through hole 75 of the lower bracket 51 by being guided and moved by the 0, 81. It is supposed to do. In that case, lock pin 5
The other end of 6 is chamfered A, and this chamfer A causes the lock portion 56b to lock holes 65, 66, 67, 68.
And it is easy to penetrate the through hole 75.

As shown in FIG. 11, the cam plate 57 is formed in a substantially flat plate shape, and the cam plate 57 has a pair of C-shapes on which the cam follower portion 56a of the lock pin 56 is fitted on the upper end side in the figure. Cam holes 80 and 81 are formed. On the lower end side of the cam plate 57, the operation force transmission link 5
A hole 82 to which one end of 9 is connected, and a hole 83 to which one end of an urging spring 97 (shown in FIG. 2) that constantly urges the cam plate 57 upward in the drawing are connected are provided.

As shown in FIG. 2, the operating force transmission link 59
Has one end of the hole 55 of the connecting portion 55d of the operating lever 55.
and the other end is connected to the hole 8 of the cam plate 57.
It is connected to 2.

In the seat back rotation control device 4 constructed as described above, the cam follower portion 56a of the lock pin 56 is normally driven by the biasing spring 97 so that the cam holes 80, 8 are formed.
The lock pin 56 is set to the lowest end position of 1, and the lock pin 56 is in the most protruding state. As shown in FIG. 12, the lock pin 56
In this state, the lock portion 56b has the lock holes 65, 66,
Any one of 67 and 68 and the through hole 75 are fitted, and the lock pin 56 is in the lock position. As a result, the seat back 3 is set at a predetermined reclining angle or a folding position. When the cam plate 57 is moved downward in FIG. 12 by pulling the operation lever 5 forward, the cam follower portion 56a is guided by the cam hole 80, so that the lock pin 56 moves rightward. . Then, when the cam follower portion 56a is located at the uppermost end of the cam hole 80 as shown by the chain double-dashed line, the lock portion 56b completely escapes from any one of the lock holes 65, 66, 67, 68 and the through hole 75. , Lock pin 5
6 is the unlocked position. This allows the seat back 3
Is free to rotate.

The infant seat belt device 5 includes left and right shoulder belts 5a, a chest pad 5b connected to the shoulder belts 5a, a tongue 5c attached to the lower end of the chest pad 5b, and the tongue 5c. It is composed of an engaging buckle 5d and a retractor 5e that winds a webbing in which the left and right shoulder belts 5a are put together into one and passes through behind the seat back 3. This infant seat belt device 5 is almost the same as the conventional infant seat belt device.

As shown in FIGS. 1 and 2, a rotating shaft 2 for rotatably supporting the seat back 3 with respect to the seat portion 2.
0, a cover sheet 98 is located between the pair of left and right lower brackets 51, and is rotatably supported between a position shown by a solid line and a position shown by a chain double-dashed line in FIG. FIG.
This cover sheet 98, as shown in FIG.
8a, and the upper surface of the main body 98a is a seat surface 98b on which an infant sits. Further, a predetermined number of reinforcing ribs 98c are provided on the lower surface of the main body 98a. These reinforcing ribs 98c are formed in the same shape and have a quadrangular first protrusion 98d and a triangular second protrusion 98e. Further, a hole 98h into which the rotating shaft 20 is loosely fitted is formed at the upper end of the cover sheet 98.

When the cover sheet 98 is in the position shown by the solid line in FIG. 2, the cover sheet 98 closes the second recessed fitting portion of the seat portion main body 7 and also the seat portion main body 7
The front seat surface 7a and the seat back surface 31a of the seat back portion 31 of the seat back 3 cooperate with each other to continuously form the seat surface and the seat back surface of the child restraint protection sheet 1. As a result, the infant can be seated reliably and stably. In that case, as shown in FIG. 2, the tip 98f of the first protrusion 98d is V-shaped.
While contacting one slope of the V-shaped second recessed fitting portion 14 and one sloped end 98g of the second protrusion 98e, the second recessed fitting portion 1 is formed.
The other slope 4 is abutted. As a result, the weight of the seated infant is reliably supported by the seat portion main body 7 via the reinforcing rib 98c.

On the other hand, when the cover sheet 98 is at the position shown by the chain double-dashed line in FIG. 2, the cover sheet 98 opens the second recessed fitting portion 14 of the seat portion main body 7. As a result,
As shown in FIG. 2, when the child restraint protection seat 1 is attached to or removed from the vehicle seat, the tongue 1 of the seat belt device attached to the vehicle seat located in the second recessed fitting portion 14 is attached.
The attachment / detachment operation of the buckle 124 and the buckle 124 can be easily performed from the upper front (arrow B) of the child restraint and protection sheet 1. Particularly, in a vehicle seat or the like having side walls or armrests on both sides, the width is only slightly larger than the width of the infant restraint protection seat 1, and it is difficult to fix the infant restraint protection seat 1 to the vehicle seat from the side of the vehicle seat. In some cases, the ease of attachment and detachment of the infant restraint protection sheet 1 is more effectively exhibited. As described above, the cover sheet 98 constitutes the rotatable portion of the upper portion of the seat portion of the present invention, and the reinforcing rib 98c constitutes the load transmitting portion of the present invention. The reinforcing rib 98c may be provided in the lower portion of the seat body 7 forming the second recessed fitting portion 14, and the cover sheet 98 may be formed of the entire upper portion of the seat body 7.

15 and 16 are perspective views showing another embodiment of the present invention. The same components as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 15 and 16, in this embodiment, the seat body 7a is replaced by the upper member 7b.
And a lower member 7c. Upper member 7b
Is composed of a central portion 9 on which the infant directly sits, and left and right side walls 10 and 11 formed on both left and right sides of the central portion 9, which are integrally formed by a plastic shell. Further, the lower member 7c has a first recessed fitting portion 12 formed in a front portion thereof for accommodating a buckle 5d of the infant seat belt device 5 and an operation lever 55 of the seat back rotation control device 4 which will be described later. There is. Further, the lower member 7
A second concave fitting portion 14 having a V-shaped cross section is formed in the center of the upper surface of c in the front-rear direction. An occupant restraint of a vehicle seat 122, which is attached to a seat 122 of a vehicle such as an automobile or an airplane and is also used to fix the infant restraint protection seat 1 to the seat of the vehicle in the second recessed portion 14. The tongue 123 and the buckle 124 of the vehicle seat belt device come to be positioned.

The upper member 7b is rotatably attached to the rotary shaft 20. As shown in FIG. 15, the upper member 7b is normally rotated forward, and its lower surface is the upper surface of the lower member 7c. Is brought into contact with and supported by a part of the seat. In this seat position, the infant can be stably seated. The load of the seated infant is supported by the lower member 7c via the upper member 7b.

When the restraint protection sheet 1 for infants is fixed or unfixed with respect to the vehicle seat, FIG.
As shown in FIG. 6, the upper member 7b is rotated backward to be fixed.
Move to the unlocking operation position. Thereby, the second concave fitting portion 14
Is exposed, and the tongue 123 and the buckle 124 are attached / detached to / from the exposed second recessed portion 14. In that case, unlike the above-described embodiment, all of the central portion 9 and the left and right side walls 10 and 11 constituting the upper member 7b pivot upward, so that the handling of the seat belt becomes extremely easy.

As shown in FIGS. 1 and 2, the shoulder belt adjuster device 6 includes a belt guide 101 for guiding the shoulder belt of the infant seat belt in a vertically adjustable manner, and a supporting means 102 for supporting the belt guide 101. And a screw shaft 103 extending in the vertical direction and for moving the support means 102 up and down, and an operation knob rotatably attached to one of the left and right side walls 32, 33 of the seat back 3 (left side wall 33 in the illustrated example). 104, the operation knob 104, and the screw shaft 10
3 and a torque link 105 that transmits the rotational torque of the operation knob 104 to the screw shaft 103, while connecting them to each other at right angles. This belt guide 1
01 is movable up and down so that the hole 106 through which the belt passes moves up and down between the upper limit position C and the lower limit position D.

In the shoulder belt adjuster device 6 thus constructed, when the operation knob 104 is rotated,
The rotation torque is transmitted through the torque link 105 to the screw shaft 1
03, and the screw shaft 103 rotates. By rotating the screw shaft 103 in one direction, the belt guide 101 is lowered, and by rotating the screw shaft 103 in the other direction,
The belt guide 101 moves up. Thereby, the vertical position of the shoulder belt of the infant seat belt is continuously adjusted.

As shown in FIG. 17, a holding spring 119 for holding a pair of belt guides 120 near the other slope of the second concave fitting portion 14 is provided on the left and right side walls of the seat portion main body 7.
Is fixed. A belt guide 120 is supported on the base portion 8 at a position corresponding to the lowest portion of the second concave fitting portion 14 so as to be rotatable and movable in the left-right direction. The belt guide 120 includes a guide portion 120a for guiding the seat belt 131 of the vehicle and the guide portion 120a.
Provided at one end of the belt guide through hole 2 of the base portion 8
9, 30 (shown in FIG. 5) rotatably and axially movably penetrated through a rotating shaft 12b, and a guide portion 120.
It is composed of a pair of protrusions 120c and 120d which are erected on a. The pair of protrusions are held by a holding spring 119 so as to be disengageable.

Then, as shown by the solid line in the figure, the belt guide 120 is normally set to the non-use position where it is most pushed into the base portion 8 and held by the holding spring 119. For example, when the width of the vehicle seat is considerably larger than the width of the child restraint and protection sheet 1, the belt guide 120 is pulled out to the left by a predetermined amount and rotated as shown by the chain double-dashed line, and the protrusion 120c , 120
The belt guide 120 is set to the use position where d is fitted in the grooves 23 and 24, respectively. At this position of the belt guide 120, the seat belt 131 of the vehicle is guided from the left by the distance i.

In the above embodiment, the present invention is applied to the child restraint protection sheet 1 in which the seat back 3 is rotatably attached to the seat portion 2 by the rotation shaft 20. However, the present invention is not limited to this, and includes a restraint protection sheet for infants in which the seat portion 2 and the seat back 3 are integrally formed and is provided on the base portion so as to be reclining, and for other infants. It goes without saying that it can also be applied to a restraint protection sheet.

[0052]

As is apparent from the above description, according to the infant restraint protection sheet of the invention of claim 1, the engaging and disengaging operation of the engaging means of the seat belt device of the vehicle is performed in front of the infant restraint protection seat. You will be able to do it from above. Therefore, even if the vehicle seat width is small, the infant restraint protection seat can be easily fixed to the vehicle seat, and the ease of fixing or unfixing the infant restraint protection seat to the vehicle seat is improved. Greatly improved.

According to the second aspect of the present invention, the load applied to the rotatable portion of the seat portion is transmitted to the lower portion of the seat portion via the load transmission portion, so the rotatable portion of the seat portion. Can be made relatively small.

Further, according to the invention of claim 3, since the rotatable portion of the seat portion is reinforced by the reinforcing rib, the rotatable portion of the seat portion can have high strength.
Further, according to the invention of claim 4, since the rotatable portion of the seat portion can be further reduced in weight, the seat portion for engaging and disengaging the engaging means of the seat belt device of the vehicle is operated. The opening and closing operation of the rotatable portion becomes easy.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a restraint protection sheet for infants according to the present invention with a left half cut out.

FIG. 2 is a side view showing a partially cutaway view of this embodiment.

FIG. 3 is a plan view of a seat portion main body in this embodiment.

FIG. 4 is a side view of the seat body of this embodiment.

FIG. 5 is a perspective view of a base portion in this embodiment.

FIG. 6 is a front view of a seat back according to this embodiment.

FIG. 7 shows an upper bracket in this embodiment, (a) is a plan view thereof, and (b) is an enlarged view of a lock hole.

FIG. 8 shows a lower bracket in this embodiment,
(A) is the front view, (b) is a top view.

9A and 9B show an operation lever of the seat back rotation control device in this embodiment, FIG. 9A is a side view thereof, and FIG. 9B is a front view thereof.

FIG. 10 is a diagram showing a lock pin in this embodiment.

FIG. 11 shows a cam plate of the seat back rotation control device in this embodiment, (a) is a plan view thereof, and (b) is XI.
It is sectional drawing which follows the XB-XIXB line.

FIG. 12 is a view for explaining the operation of the lock pin and the cam plate in this seat back rotation control device.

FIG. 13 shows this cover sheet, (a) is a side view thereof, and (b) is a front view thereof.

FIG. 14 is a view for explaining the action of this cover sheet.

FIG. 15 is a perspective view showing another embodiment of the present invention.

FIG. 16 is a perspective view showing a state where the upper member of this embodiment is in a fixing / unlocking operation position.

FIG. 17 is a diagram showing an installation position of a belt guide and an installation position of a holding spring of this belt guide of this embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Infant restraint protection sheet, 2 ... Seat part, 3 ... Seat back, 4 ... Seat back rotation control device, 5 ... Infant seat belt device, 6 ... Shoulder belt adjuster device, 7 ...
Seat body, 7a ... Seat surface, 7b ... Upper member, 7c
... lower member, 8 ... base part, 9 ... central part, 10 ... left side wall, 11 ... right side wall, 12 ... first concave fitting part, 13 ... guide hole, 14 ... second concave fitting part, 18, 19 ... times Dynamic support, 20
... Rotating shaft, 21 ... Rotating shaft through hole, 22 ... Lock pin through hole, 23, 24, 25, 26 ... Groove, 29, 30 ... Belt guide through hole, 31 ... Seat back part, 32 ... Left side wall, 33
... right side wall, 34, 35 ... guide hole, 46, 47 ... rotation support portion, 48, 49 ... through hole, 50 ... upper bracket,
51 ... Lower bracket, 52 ... Upper hook pin, 5
3 ... Lower hook pin, 54 ... Torsion spring, 55 ... Operating lever, 56 ... Lock pin, 57 ... Cam plate, 59 ... Operating force transmission link, 65, 66, 67 ... Lock hole (for reclining), 68 ... Lock hole ( (For folding lock), 69
... Guide hole, 75 ... Through hole, 80, 81 ... Cam hole, 84
... pin cover, 97 ... biasing spring, 98 ... cover sheet,
98c ... Reinforcing ribs, 101 ... Belt guide, 102 ... Supporting means, 103 ... Screw shaft, 104 ... Operation knob, 105 ...
Torque link, 109 ... Cylindrical member, 110 ... Gripping portion, 1
11 ... Seat cover, 112 ... Cushion, 113, 1
14 ... Guide, 119 ... Holding spring, 120 ... Belt guide, 123 ... Tongue, 124 ... Buckle, 131
… Vehicle seat belts

Claims (5)

[Claims] 1. A restraint protection seat for an infant having at least a seat for seating an infant, the seatbelt device being attached to a seat of a vehicle and having at least a seatbelt and engaging means such as a tongue and a buckle. In the child restraint protection sheet fixed on the seat by engaging the engagement means inside the seat portion, at least a part of an upper portion of the seat portion is rotatably provided, and Restraint protection sheet for infants, characterized in that the inside of the seat can be opened. 2. The seat portion includes an upper member composed of a central portion on which a baby sits directly and left and right sidewalls formed on both left and right sides of the central portion, and a lower member supporting the upper member. The restraint protection sheet for infants according to claim 1, wherein the restraint protection sheet is rotatably provided. 3. A load transmitting portion is provided in a rotatable portion of an upper portion of the seat portion, and a load applied to the rotatable portion is transmitted to a lower portion of the seat portion via the load transmitting portion. The restraint protection sheet for infants according to claim 1 or 2, wherein. 4. The restraint protection sheet for a baby according to claim 3, wherein the load transmitting portion is a reinforcing rib that reinforces the rotatable portion. 5. A load transmitting portion is provided below the seat portion, and a load applied to a rotatable portion of an upper portion of the seat portion is transmitted to the lower portion of the seat portion via the load transmitting portion. The restraint protection sheet for infants according to claim 1 or 2.