KR20120010102A - A seat structure of a nursery appliance and child seat for a vehicle - Google Patents

Abstract

PURPOSE: A seat structure of a nursery appliance and the child seat for a vehicle are provided to increase safety performance by avoiding the concentration of the weight of the child in the lower part of the crotch belt. CONSTITUTION: The seat structure and children seat of a vehicle is comprised of a seat main body(61), a seat base(64), and a restriction belt(66). The seat main body is comprised of a left part and the back of a chair. The seat base supports the seat main body. The restriction belt restricts the body of a baby in the seat. The restriction belt includes a crotch belt(21) and a buckle element(70). The crotch belt is penetrated through the seat. The buckle element is attached to the upper part of the crotch belt.

Description

Seat structure of child care device and child seat for car {A SEAT STRUCTURE OF A NURSERY APPLIANCE AND CHILD SEAT FOR A VEHICLE}

TECHNICAL FIELD The present invention relates to a seat structure of a childcare mechanism in which a child seats, such as an automobile child seat or a baby carriage.

The child seat for automobiles is not only used as a child seat for a vehicle to ensure the safety of the infant in a passenger car, but also the improvement of the ride comfort performance of the infant, such as a reclining function, a rotation function and a bed function, is aimed at. Such a child seat generally includes a base portion carried on the seat of the vehicle, a seat portion supported by the base portion and seated by the infant, and a restraint belt across the infant's body. What is described in 2005-162151 (patent document 1) is known.

The child seat described in Patent Document 1 includes, as a restraint belt, a pair of left and right shoulder and waist belts, and a crotch belt that protrudes from the center of the seat surface of the seat portion. The crotch belt passes between the thighs of the infant's legs and extends upwards, and the shoulder and waist belts are fixed to the buckle at the tip of the crotch belt to restrain the infant by five points. As a result, the pelvis of the infant is restrained by the left and right waist belts.

By the way, in the child seat of patent document 1, the back of the seat part can adjust reclining. For this reason, before and after the reclining adjustment, the upper portion of the shoulder belt is fixed so that the restraint belt becomes tight and pressurizes the infant, or conversely, the restraint belt becomes loose and the inability to adequately protect the infant's body. It penetrates the back surface and connects with an adjustment belt at the back surface of a back part. The adjustment belt extends downward in accordance with the base portion, and then changes direction in the forward direction, and the front end portion of the adjustment belt reaches the front end of the seat surface. The protector of the infant can adjust the tensioned state of the restraint belt to an appropriate one by adjusting the lead length of the adjustment belt.

In contrast, the crotch belt extends in the vertical direction through the seat surface of the seat portion, and the lower end portion of the crotch belt is connected to a member located below the seat surface.

In addition, Japanese Unexamined Patent Application Publication No. 2003-226178 (Patent Document 2), the upper end side of the shoulder belt penetrates the backrest portion, further extends along the back surface of the backrest portion and the bottom surface of the seat portion, and the tip thereof is drawn out at the front end of the left portion. The guardian of the infant can adjust the tensioned state of the shoulder belt to an appropriate one by adjusting the lead length.

In addition, Japanese Patent Laid-Open Nos. 10-250426 (Patent Document 3) and Japanese Patent Laid-Open No. 2003-72435 (Patent Document 4) disclose a seat structure in which the back surface is rearviewed to be in a bed state. In these documents, in the chair state, the rear side of the seat surface is inclined so as to be lower than the front side, and the infant sits deep. On the other hand, in the bed state, it rises until the seat surface is almost horizontal, and provides a bed space which is almost horizontal with the back surface.

[Patent Document]

Patent Document 1: Japanese Patent Application Laid-Open No. 2005-162151

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-226178

Patent Document 3: Japanese Patent Application Laid-Open No. 10-250426

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-72435

In the seat of the child seat described in Patent Literature 1, since the lower end of the crotch belt connects to the center portion of the base portion below the seat, it is necessary to provide a bypass path of the adjustment belt so that the adjustment belt does not interfere with the lower end of the crotch belt. There is a problem that the structure is complicated. That is, as shown in FIG. 4, a shaft B or a bracket which extends from the lower part A to the left-right direction is hypothesized, the lower end of the crotch belt C is connected to the shaft B, and the crotch belt ( In the conventional structure in which C) penetrates the center part of the left part A, and makes it possible to peel off the left and right shoulders and the waist belt E via the buckle D provided in the upper end of the crotch belt C, Means H were needed to bypass the adjustment belt G passing through the back surface of the backrest portion F and the bottom surface of the seat portion A so as not to interfere with the crotch belt C. FIG.

In addition, the present inventor has found that if the configuration of the conventional crotch belt disclosed in Patent Document 1 is applied to the seats disclosed in Patent Documents 3 and 4, new incompatibility occurs. That is, as shown in FIG. 4, even if the protrusion height Lb of the crotch belt B which protrudes upwards from the left part A in the bed state of a broken line is appropriate, the crotch belt B is in a solid chair state. It is a problem that the protrusion height Lc of the to be too high. For this reason, in the chair state, the left and right waist belts cannot restrain the pelvis of the infant. Then, appropriate restraint of the infant can not be realized as a child seat for an automobile. In other words, for example, even if the protrusion height Lc is appropriate, there arises a problem that the protrusion height Lb is too low at this time.

In the child seat as described above, the impact acting on the restraint belt is concentrated on the lower end of the crotch belt C. For this reason, further improvement is desired for safety reasons.

The objective of 1 of this invention is providing the technique which can avoid the interference of an adjustment belt and a crotch belt as a simple structure in view of the above-mentioned situation.

Another object of the present invention is to provide a technique capable of eliminating the inadequacy of the protrusion height of the crotch belt changing in the case of a childcare mechanism in which the seat portion interlocks in the vertical direction in accordance with the reclining adjustment of the backrest portion.

It is still another object of the present invention to provide a technique capable of avoiding concentration of impact load at the lower end of the crotch belt and improving safety performance.

The seating structure of the childcare mechanism according to the present invention for this purpose comprises a seat body having a seat and a back, a seat base for supporting the seat body, and a restraint belt device for restraining the body of the infant seated on the seat body. . The restraint belt device includes a crotch belt extending through the seat in the vertical direction and a buckle element attached to the top of the crotch belt. The crotch belt includes a central portion connected to the buckle element, and a pair of branch portions branched from the center portion to the left and right, and the tip portion thereof is connected to the left and right sides of the seat base.

According to the present invention, the crotch belt penetrating the left part extends from the lower part to the left and right side than the left part, and the left end part connects with the left part of the seat base, and the right end part connects with the right part of the seat base. It is possible to secure a space between the base and the branch on the right side, and the interference between the adjustment belt and the crotch belt can be avoided with a simple structure. In addition, when the seat portion interlocks in the up and down direction in response to the reclining adjustment of the backrest portion, the crotch belt portion protruding upward from the seat portion moves up and down together with the seat portion. Therefore, it becomes possible to eliminate the inadequacy that the protrusion height of the crotch belt changes, and even when reclining adjustment, the restraint belt device including the crotch belt can always restrain the pelvis of the infant. In addition, it becomes possible to disperse the impact applied to the lower end of the crotch belt from side to side, and the safety performance is improved.

As for the crotch belt, the lower end side should just branch, and the position of a branch point is not specifically limited. For example, the crotch belt may branch at a position in the longitudinal direction, and the region from the upper end to the intermediate position may be bundled. Or the crotch belt is bifurcated from the buckle element at the top.

The shape of the seat base is not particularly limited, and the connection portion between the side portion of the seat base and the tip end of the crotch belt is not particularly limited, but as a preferred embodiment, the seat base includes a bottom wall located below the seat and a bottom wall. It includes a pair of side wall portions that rise and extend upward at the left and right ends of the portion, and the tip portion of the pair of branch portions of the crotch belt is connected to the pair of side wall portions.

In the present invention, the restraint belt device may be a three-point restraint formula including a crotch belt and a pair of belts, a five-point restraint formula including a crotch belt and a pair of belts (shoulder belts and a waist belt), and a shoulder belt. The tension of the may not be adjusted, but as a preferred embodiment, the restraint belt device includes a pair of shoulder belts that are releasably connected to the buckle element and one pair of shoulders to adjust the tension of the shoulder belts. An adjustment belt connected to the belt, the other end of which extends along the back of the back and the back of the seat and is led to the front region of the seat; and a locking mechanism for fixing the position of the adjustment belt in the front region of the seat. Pass between the quarter parts of a pair of crotch belts.

Although the backrest of the present invention may be fixed or not reclining without reclining adjustment, as a preferred embodiment, the backrest is provided to be rearviewable, and the seat portion is provided so that the seat surface height is increased in response to the rearview motion of the backrest. The pair of branch portions of the crotch belt extends in contact with the rear surface of the seat so that the projecting height of the crotch belt protruding upward from the left face of the seat is substantially constant regardless of the change in the height of the seat.

Although the range of the reclining adjustment angle is not specifically limited, As a preferable embodiment, the backrest part can be rearviewed to the substantially horizontal position.

The seat structure of the present invention is applicable to child care devices such as strollers, indoor chairs and beds. As a preferable embodiment, a child seat for an automobile provided with the seat structure of the present invention can be mentioned.

In this way, the crotch belt of the present invention extends through the left portion in the vertical direction, and is divided into a center portion connected to the buckle element, and a left and right branch from the center portion, and a pair of branches whose tip portion is connected to the left and right sides of the seat base. Since the part is included, interference between the adjustment belt and the crotch belt can be avoided when passing the adjustment belt below the seat. In addition, in the case of a childcare mechanism in which the left part interlocks in the up-down direction in response to the reclining adjustment of the backrest part, it is possible to eliminate the inadequacy that the protrusion height of the crotch belt changes. In addition, it is possible to disperse the impact load of the crotch belt, thereby improving the safety performance.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows typically the seat structure of the child care mechanism which is one Example of this invention.
Fig. 2 is a cross sectional view schematically showing the seat structure of the embodiment, showing a state in which the seat is in a lowermost position.
Fig. 3 is a cross sectional view schematically showing the seat structure of the embodiment, showing a state in which the seat is in the uppermost position.
4 is a longitudinal sectional view schematically showing a seat structure of a conventional example.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on the Example shown to drawing. BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows typically the seat provided with the seat structure of the child care apparatus which becomes one Example of this invention. Fig. 2 is a cross sectional view schematically showing the seat structure of the embodiment, showing a state in which the seat is in the lowermost position. Fig. 3 is a cross sectional view schematically showing the seat structure of the embodiment, showing a state in which the seat is in the uppermost position. The seat structure of the present invention includes a seat body 61 on which a child sits and a seat base 64 that supports the seat body 61.

The seat main body 61 has a left part 62 which extends substantially in the horizontal direction and supports the hip of an infant who is a seat, and a back part 63 which extends upward from the rear end of the left part and supports the back of the infant. The cushioning material is provided in the seat surface which becomes the upper side of the seat part 62, and the back surface which becomes the surface of the backrest part 63, and provides comfortable riding comfort to the infant who sits. The backrest portion 63 can be reclined and can be inclined to a substantially horizontal position in a bed state as shown by a dashed-dotted line.

In the chair state indicated by the solid line, the back portion 63 rises at the rear end of the seat 62, and the seat 62 is inclined such that the rear end thereof is located below the front end. This allows the infant to sit deep in the seat body 61. On the other hand, in the bed state shown by the dashed-dotted line, the back part 63 is rearwardly centered about the lower end, and the rear end of the left part 62 rises. The lower end part of the backrest part 63 is connected with the rear end part of the left part 62 so that relative rotation is possible. By this, when the reclining adjustment is performed, the inclination angle of the seat 62 is also changed in response to the inclination angle of the backrest 63. Specifically, the rear end of the seat 62 rises when the backrest 63 falls down. On the contrary, when the backrest part 63 is raised to the front, the rear end of the left part 62 descends.

Thus, the left part 62 is moved and adjusted in the up-down direction, and the crotch belt 21 which protrudes upward from the left face of the left part 62 also moves up and down in association with the up-down moving position of the left part 62. This point will be described later in detail.

The restraint belt device 66 which restrains the body of the infant seated on the seat main body 61 is connected to the seating surface of the seat 62 and the back of the backrest 63. The restraint belt device 66 protrudes from the seat surface of the pair of left belt 67 and the right belt 68 and the seat 62 extending from the back of the backrest 63 to the seat of the seat 62. It has an elongated crotch belt 21 and a buckle element 70 attached to the upper end of the crotch belt 21 to detachably connect with these belts 67 and 68.

The left belt 67 located on the left side toward the front and turning the back toward the seat main body 61 is pulled out from the back of the back of the back 63 to extend downward, and the lower end thereof is the seat 62 or the seat base. The left side of (64) is connected. At one point in the vertical center region of the left belt 67, a fastener that can be connected to and detached from the buckle element 70 is provided. When the infant is seated in the seat body 61 and this fastener is inserted into the buckle element 70, the left belt 67 connects with the crotch belt 21 near the abdomen of the infant via the buckle element 70. In this way, the left belt 67 restrains the right shoulder part of the infant at the upper side (shoulder belt part) than this connection point, and the right waist part of the infant at the lower side (waist belt part) than this connection point. Restraint.

Similarly, the right belt 68, which is turned to the front and located on the right side toward the rear seat main body 61, is also drawn out from the back of the back of the back 63 to extend downward, and the lower end thereof is the seat 62 or It connects with the right side part of the seat base 64. One point of the upper and lower central region of the right belt 68 is provided with a fastener that can be connected to and detached from the buckle element 70. When the infant is seated in the seat body 61 and the fastener is inserted into the buckle element 70, the right belt 68 connects with the crotch belt 21 near the infant's abdomen via the buckle element 70. In this way, the right belt 68 restrains the left shoulder of the infant at the upper side (shoulder belt portion) than the connection point, and restrains the left waist of the infant at the lower side (waist belt portion) than the connection point.

Therefore, the region above the fastener in the left and right belts 67 and 68 constitutes a pair of shoulder belts, and the region below the fastener constitutes a pair of waist belts. In addition, in order to avoid the trouble of drawing, the waist belt part of the left and right belts 67 and 68 overlaps with the crotch belt 21 in FIG. 1, and the shoulder belt part of the left and right belts 67 and 68 overlaps, Is displayed. And the crotch belt 21 passes between the embossed thighs of the infant. Thereby, the infant is restrained five points by the left shoulder belt, the right shoulder belt, the left waist belt, the right waist belt, and the crotch belt 21.

The upper end of the left belt 67 and the upper end of the right belt 68 pass through a pair of left and right through holes 25 provided in the backrest portion 63, and the adjustment belt is common on the rear surface side of the backrest portion 63. It connects with the upper end of (23). The adjustment belt 23 extends along the back surface of the backrest portion 63 at the center of the left and right directions of the seat body 61, and passes between the seat 62 and the seat base 64, and the lower end thereof is the seat base. It is pulled forward than the front end of 64. By adjusting the pull-out length of the adjustment belt 23, the tension of the left and right belts 67 and 68 can be adjusted suitably. In addition, since the adjustment belt 23 is normally fixed by the locking mechanism 42 with the seat base 64, it cannot move, and the left and right belts 67 and 68 do not loosen during the seating of the infant.

The seat base 64 includes a bottom wall portion 64c positioned below the seat 62 and a pair of side wall portions 64a and 64b extending upward from the left and right ends of the bottom wall portion 64c. And the seat part 62 and the backrest part 63 are supported between these side wall parts 64a and 64b.

In addition, although not shown in the figure, when the seat of the present embodiment is applied to an automobile child seat, a circular pedestal is formed on the lower surface side of the bottom wall portion 64c, and the pedestal is supported by the base member. Since the base member which is not shown has a base which receives the circular base of the seat base bottom wall part 64c, and the rear wall part which arises at the rear end of a base, it is formed in L shape from the left-right direction, and the seat base 64 is made into the base member. We support so that rotation is possible. Therefore, the seat main body 61 and the seat base 64 can rotate about the axis extended in a perpendicular direction. The base member is carried in the vehicle seat.

The base member is provided with a belt fastener for a child seat (not shown). The child seat for a vehicle is attached and fixed to a vehicle seat by crossing the vehicle seat belt over the base member and inserting and fixing the seat belt of the vehicle with the child seat belt fastener.

The crotch belt 21 includes a center portion and a pair of branch portions. 2 and 3, the crotch belt 21 penetrates the through hole 62h provided in the center portion of the left portion 62, and a central portion protruding upward from the left portion 62 has the buckle element 70. It is connected to, and the branch part which continues below the center part branches below the left part 62, and extends to the left and right. The distal end portion of the branch belt 21a of the crotch belt 21 that extends to the left side of the branched portion is connected to the left wall portion 64a. Moreover, the tip end part of the branch belt 21b of the crotch belt 21 which extends to the right facing the branch part is connected to the right wall part 64b.

In particular, the crotch belt 21 of the present embodiment has a buckle element 70 at the top, and branch belts 21a and 21b are bifurcated from the buckle element 70. Although not shown, the upper ends of the branch belts 21a and 21b are sealed to each other to form a central portion of a predetermined length that cannot be separated, or a tubular member of a predetermined length such as a sleeve. It may be passed and integrated with each other. In this case, the sleeve is supported by the seat 62 and does not easily fall downward than the seat 62.

As shown in FIG.2 and FIG.3, the front end part of the branch belt 21a which is a component of a crotch belt, and the front end part of the branch belt 21b are connected with the up-down center area | region of these side wall parts 64a and 64b, respectively. do. Although not shown, the left and right ends of the crotch belt 21 may be connected to the lower ends of the side wall portions 64a and 64b, respectively. The adjusting belt 23 passes between the pair of branch portions of the crotch belt 21. In addition, although the branch belts 21a and 21b branch in the left-right direction above the adjustment belt 23 in FIG.2 and FIG.3, the height of the branch belts 21a and 21b changed, and the adjustment belt 23 was changed. It is understood that passing through the pair of branched portions of the crotch belt 21 is nothing short of inevitable.

The protrusion height of the crotch belt in the case of moving-adjusting a seat part up and down direction is demonstrated. According to the present embodiment, the crotch belt 21 penetrates the seat 62 and is detachably connected to the left and right belts 67 and 68 at an upper end projecting upwardly from the seat 62, and is detached from the seat 62. It is branched from below and extended to the left and right, and the front end of the branch belt 21a on the left side is connected with the left wall portion 64a, and the front end of the branch belt 21b on the right side is connected to the right wall portion 64b. Therefore, the adjustment belt 23 does not interfere with the crotch belt 21 even through the adjustment belt 23 in the front-rear direction from below the left part 62. As a result, the structure of the seat base 64 can be simplified without the need for the means for bypassing the adjustment belt 23. Therefore, according to this embodiment, the interference between the adjustment belt 23 and the crotch belt 21 can be avoided as a simple structure.

In addition, according to this embodiment, when the left part 62 is moved upward and adjusted, it is possible to move the upper end part of the crotch belt 21 also upward. On the contrary, when the left part 62 is moved downward and adjusted, it is possible to move the upper end of the crotch belt 21 also downward. Specifically, when the left part 62 shown in FIG. 3 moves downward, since the branch belts 21a and 21b are pressed downward, the crotch belt 21 moves up and down in association with the left part 62. will be. Therefore, compared with FIG.2 and FIG.3, regardless of the up-down position of the seat part 62, the height of protrusion of the crotch belt 21 which protrudes from the seat surface of the seat part 62 does not change very much. As a result, when the left part 62 is adjusted upward, the height of protrusion of the crotch belt becomes small, and the conventional inadequacy of the restraint belt 66 is difficult to restrain the pelvis of the infant. Similarly, when the seat 62 is adjusted to the downward position, it is possible to eliminate the conventional inadequacy of the crotch belt protruding height so that it is difficult to restrain the pelvis of the infant.

In addition, according to the present embodiment, since the crotch belt 21 includes the branch belts 21a and 21b, it is possible to avoid the concentration of the impact load at the lower end of the crotch belt 21 and to improve the safety performance.

As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to what was shown embodiment. In the illustrated embodiment, various modifications and variations can be made within the same range as the present invention or within an equivalent range.

[Industrial Availability]

The seat structure according to the present invention is advantageously used in child care devices such as child seats for automobiles, baby strollers, indoor child care chairs, and beds.

21: Crotch Belt
23: adjustment belt
51: children seat
61: seat body
62: left
63: backrest
64: seat base
64a: left wall
64b: right wall
66: restraint belt
67 left belt (shoulder belt and waist belt)
68: belt (shoulder belt and waist belt)
70: buckle element

Claims (6)

A seat body having a seat and a back;
A seat base supporting the seat body,
A restraint belt device that restrains the body of the infant seated on the seat body,
The restraint belt device includes a crotch belt extending through the seat in an up and down direction, and a buckle element attached to an upper end of the crotch belt,
The crotch belt comprises a central portion connected to the buckle element, and a pair of branching portions branching from the central portion to the left and right, and the tip portion of which is connected to the left and right sides of the seat base. Seat structure. The method of claim 1,
The seat base includes a bottom wall portion positioned below the seat portion, and a pair of side wall portions extending upward from left and right ends of the bottom wall portion,
A front end portion of the pair of branch portions of the crotch belt is connected to the pair of side wall portions. The method of claim 1,
The restraint belt device includes a pair of shoulder belts detachably connected to the buckle element, one end of which is connected to the pair of shoulder belts to adjust the tension of the shoulder belt, and the other end of the back of the backrest portion. And a locking belt extending along the rear surface of the seat and leading to the front region of the seat, and a locking mechanism for fixing the position of the belt in the front region of the seat,
And said adjusting belt passes between a pair of branch portions of said crotch belt. The method of claim 1,
The backrest part is provided to be rearviewable,
The seat portion is provided so that the seat surface height is increased in response to the rear view motion of the backrest portion,
The pair of branch portions of the crotch belt extends in contact with the rear surface of the seat so that the projecting height of the crotch belt projecting upward from the seat surface of the seat is substantially constant regardless of the change in the height of the seat. Seat structure of child care appliance made with. The method of claim 4, wherein
The seat structure of the child care mechanism, characterized in that the backrest can be rearviewed to a substantially horizontal position. A child seat for an automobile, comprising the seat structure according to claim 1.

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