JPH0642464U - Child seat - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object to obtain a child seat that can improve the operability when adjusting the wearing height of a child restraint belt for a child. A pair of openings 100 and a plurality of engagement holes 102 are formed in an upper end portion of a shell 18 of a child seat body. Further, a headrest 22 is arranged on the front surface of the upper end portion of the shell 18,
8, which is a strength member disposed on the rear surface of the upper end portion of the slider 1.
It is integrated with 14. The child restraint belt 26 is inserted into and supported by the slider 114. Therefore, when the mounting height is adjusted, the mounting height of the child restraint belt 26 (including the height of the headrest 22) can be changed simply by sliding the headrest 22 up and down, so that the operability is improved. Can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a child seat attached to a seat cushion of a vehicle seat.

[0002]

[Prior art]

 Traditionally, children's seats have been used to seat a child in the passenger seat or rear seat of a vehicle. The child seat is provided with a child restraint belt for restraining a seated child. The child restraint belt is inserted into and supported by a pair of belt insertion holes formed in the seat back of the child seat. In general, a pair of belt insertion holes is provided in the seat back in a plurality of stages (for example, upper stage, middle stage, and lower stage), and one of the belt insertion holes is used according to the physical constitution of the child. .

The reason why a plurality of belt insertion holes are formed in this manner is as follows. That is, since the child restraint belt is inserted through the belt insertion hole of the seat back, the load acting on the child restraint belt during sudden deceleration of the vehicle is directly supported by the seat back. Here, in order to reliably support this load with the seat back, it is essential that the support strength of the seat back is not reduced. For this reason, it can be said that it is preferable not to form a belt insertion hole having a very large opening area. Therefore, only a belt insertion hole having an opening area such that a child restraint belt can be inserted can be formed. However, since there is a demand for adjusting the height of wearing a child restraint belt for a child, a plurality of belt insertion holes are formed to satisfy this requirement.

As a result, when the child's physique is small, the lower belt insertion hole is used, and when the child grows and becomes larger, the child restraint belt is reinserted into the middle or upper belt insertion hole. However, the requirement to adjust the wearing height of the child restraint belt according to the physical constitution of the child will be satisfied.

[0005]

[Problems to be solved by the device]

 However, in the case of this structure, in order to change the wearing height of the child restraint belt, the child restraint belt is once pulled out from the belt insertion hole as described above, and the child restraint belt is again inserted into another belt insertion hole. I have to do it again. Therefore, there is a problem that the operability when changing the mounting height of the child restraint belt with respect to the child decreases.

In consideration of the above facts, an object of the present invention is to obtain a child seat capable of improving the operability when adjusting the wearing height of the child restraint belt for a child.

[0007]

[Means for Solving the Problems]

 A child seat according to the present invention comprises a skeleton member for supporting a seated child's upper body, and an opening having a predetermined opening area formed in the skeleton member with a height direction of the skeleton member as a longitudinal direction. A headrest that is arranged on the front side of the skeleton member and is slidable in the height direction of the skeleton member; and a headrest that is connected to this headrest and is in contact with the rear side of the skeleton member. And a high-strength slider guided by the opening and slidable along the height direction of the skeleton member, and a child restraint positioned in the opening and inserted through the slider. And a belt.

[0008]

[Action]

 According to the above configuration, when changing the mounting height of the child restraint belt for a child, the headrest may be slid along the height direction of the skeleton member. When the headrest is slid, the slider connected to the headrest also slides while being guided by the opening formed in the skeleton member. Therefore, the child restraint belt inserted through the slider moves in the opening along the height direction of the skeleton member. Therefore, the mounting height of the child restraint belt for a child can be adjusted to an optimum height. Moreover, as the operation for adjusting the wearing height of the child restraint belt, it is only necessary to slide the headrest along the height direction of the skeleton member as described above, that is, when the height of the headrest is adjusted. At the same time, the height at which the child restraint belt is worn can be adjusted, which greatly improves operability.

As described above, according to the present invention, the operability for adjusting the wearing height of the child restraint belt is improved, which is mainly formed in the height direction of the skeleton member and has a predetermined opening. This is because the skeletal member is provided with an opening having an area. The reason why the present invention can provide such an opening in the skeleton member will be described below.

That is, according to the present invention, since the slider has high strength and is arranged in contact with the rear surface side of the skeletal member, the child restrains due to inertial movement of the child during sudden vehicle deceleration or the like. It can be said that the load applied to the belt for use is reliably transmitted to the frame member via the slider. In other words, in the present invention, the load applied to the child restraint belt is not directly transmitted to the seat back as in the prior art, but the load is once transmitted to the high-strength slider and then transmitted to the skeleton member. . Therefore, for example, even if an opening is formed to allow the conventional belt insertion holes of a plurality of stages to communicate with each other in the vertical direction, it does not affect the supporting strength. Therefore, according to the present invention, it is possible to provide the opening portion having the predetermined opening area, which is formed with the height direction of the skeleton member as the longitudinal direction. Then, by positioning the child restraint belt in this opening and sliding the head restraint through which the child restraint belt is inserted and which is integral with the slider, the mounting height of the child restraint belt can be changed by itself. It becomes.

[0011]

【Example】

 Hereinafter, a child seat 10 to which the present invention is applied will be described with reference to FIGS. 1 to 10. The child seat 10 is an infant seat (IRS) for carrying an infant aged 6 months to less than 1 year old, and a child seat for carrying an infant aged from 1 to 4 years old. (Abbreviated as CRS) can be used.

As shown in FIGS. 1 and 2, the child seat 10 includes a base 12 and a child seat body 14 that is detachable from the base 12 and includes a headrest 22. ,,. Hereinafter, the child seat body 14, the base 12, the headrest 22, and members related thereto will be described in this order.

[Description of Child Seat Body 14] The child seat body 14 includes a curved shell 18 that matches the average posture of a seated child. The shell 18 is relatively rigid and made of resin, and the shell 18 serves as a skeleton member of the child seat body 14.

A relatively thick cushion pad made of urethane or the like and covered with a skin material is arranged on the lower surface of the shell 18. A relatively thin back pad formed of urethane or the like and covered with a skin material is arranged on the upper surface of the shell 18. As a result, the seat back and the seat cushion are integrally formed. Further, in the child seat body 14, side support support portions 18A are integrally formed on both sides of the lower portion of the shell 18. A webbing insertion hole 19 is formed in the side support support portion 18A, and side supports 20 for supporting both sides of the waist of the child are fitted therein.

As shown in FIG. 3, a substantially rectangular bulge 60 is formed on the upper side of the back surface of the child seat body 14, and a protrusion 62 is formed on the lower side thereof. Has been done. A pair of rollers 64 are axially supported by the protrusion 62, and a pair of rods 66 are coaxially protruded from the lower end of the bulging portion 60. The pair of rods 66 retracts into the bulging portion 60 by a predetermined amount by pulling the operation knob 70 arranged in the opening 68 provided at the front end portion of the child seat body 14. There is.

[Description of Base 12] On the other hand, as shown in FIG. 4, the base 12 is a base portion 12A that is a portion to be placed on the seat surface of the seat cushion 16A of the vehicle seat 16, and the base portion 12A. The standing portion 12B is erected from the rear end portion and pressed against the surface of the seatback 16B. Then, the base 12 is fixed by using the three-point webbing 32 of the vehicle seat 16 at a portion where the base portion 12A and the standing portion 12B meet. That is, after the shoulder side webbing 32A and the lap side webbing 32B are locked by the E-clip 34 and overlapped with each other, the shoulder side webbing 32A and the lap side webbing 32B are hung on the upper end surface of the base 12 as they are, and the tongue plate 36 is engaged with the buckle device 38. By doing so, the base 12 is fixed to the seat surface of the seat cushion 16A.

Further, a pair of rail portions 40 are formed on both sides of the base 12. The rail portion 40 is curved at a predetermined angle. The pair of rail portions 40 are generally constituted by a roller guide portion 42 provided on the base portion 12A side of the base 12 and a rod guide portion 44 provided on the standing portion 12B side of the base 12.

The pair of roller guides 42 of the base 12 are supported by the pair of rollers 64 of the child seat body 14 fitted in the pair of roller guides 42. The pair of rods 66 of the seat body 14 are supported in a fitted state. The pair of rods 66 are adapted to be selectively engaged with the pair of rod guide portions 44, and the operation knob 70 may be pulled to release the engagement. With this configuration, the child seat body 14 can be moved relative to the base 12 along the pair of rail portions 40, and can be reclined at a predetermined angle.

Further, notches 88 are formed in the connecting portions of the pair of roller guide portions 42 and the rod guide portion 44 of the base 12, respectively. The notch width of each notch 88 is larger than the outer diameter of the roller 64. Therefore, by locating the roller 64 in the cutout portion 88, the roller 64 can be separated from the roller guide portion 42.

An arcuate withdrawal groove 90 is formed in the pair of rod guide portions 44 in the vicinity of the ends on the side of the cutout portion 88. The groove width of these retracting grooves 90 is slightly larger than the outer diameter of the rod 66. Therefore, by positioning the rod 66 in the retreat groove 90, the rod 66 can be separated from the rod guide portion 44.

When the pair of rollers 64 are positioned at the front ends of the roller guide grooves 42A, the pair of rods 66 are positioned at the base ends of the retracting grooves 90, and the pair of rollers 64 is positioned at the same time. The length between the roller 64 and the rod 66, the length of the roller guide portion 42, and the length of the rod guide portion 44 are set so that the pair of rods 66 are located in the open portion 58 when the notches 88 are located. It is set.

Therefore, as shown in FIG. 5, the retractable groove 90 is formed by positioning the pair of rollers 64 at the front end of the roller guide 42 and rotating the child seat body 14 in the direction of arrow C in this state. The pair of rods 66 can be disengaged from the rod guide portion 44 by using, and the child seat body 14 is further retracted along the pair of roller guide portions 42 so that the pair of rollers 64 can be removed from the cutout portion 88. Can be released. As a result, the child seat body 14 can be separated from the base 12. As another method, as shown in FIG. 6, by reclining the child seat body 14 to the maximum raised position, the pair of rollers 64 correspond to the cutout portion 88 and the pair of rollers 64 to the open portion 58. Since the rod 66 corresponds to, the child seat body 14 can be detached from the base 12 by slightly lifting the child seat body 14 as it is.

When the child seat 10 is used as an infant seat, the child seat body 14 is detached from the base 12 so that the child seat body 14 alone and the seated infant are behind the vehicle. It is fixed to the seat cushion 16A of the vehicle seat 16 so as to face (see FIG. 7).

[Explanation of Headrest 22 and Members Related thereto] As shown in FIGS. 8 to 10, the headrest 22 is arranged on the front surface of the upper end portion of the shell 18 of the child seat body 14 described above. It is set up. First, the shape of the upper end of the shell 18 will be described. As shown in FIGS. 9 and 10, on both sides of the upper end portion of the shell 18, there are formed headrest guide walls 18B that are convex toward the rear in a U-shaped cross section. A pair of openings 100 formed with the height direction of the shell 18 as a longitudinal direction is formed in a portion located between the pair of headrest guide walls 18B. Both side edges of each opening 100 in the shell 18 are bent rearward to form a slider guide wall 18C. The widthwise dimension of each opening 100 is substantially equal to the widthwise dimension of the child restraint belt 26 described later. Further, a plurality of engagement holes 102 are formed between the pair of openings 100 at predetermined intervals along the height direction of the shell 18. Both side edges of each engagement hole 102 in the shell 18 are bent rearward to form a lock piece guide wall 18D.

The headrest 22 includes a headrest shell 104 made of resin and having a relatively high rigidity. Both side portions 104A of the headrest shell 104 are formed to project rearward in a U-shaped cross section, and these both side portions 104A are fitted and supported on the outside of the headrest guide wall 18A of the shell 18. Further, side pads 106 covered with a skin material are fitted inside both side portions 104A of the headrest shell 104. An upper pad 108 covered with a skin material is attached to the front surface of the central upper portion of the headrest shell 104, and a lower pad 110 covered with the skin material is attached to the front surface of the central lower portion. In addition, the headrest shell 104 has a belt insertion hole 112 (see FIG. 9) formed between the upper pad 108 and the lower pad 110.

In addition, a substantially box-shaped slider 114 is disposed on the upper rear surface of the shell 18 of the child seat body 14. The slider 114 is formed of a predetermined high strength member. A box-shaped lock piece holding portion 116 is formed at the center of the slider 114. In addition, a pair of box-shaped belt insertion portions 118 are formed on both sides of the slider 114, respectively. The lock piece holding portion 116 is fitted and supported by the lock piece guide wall 18D of the shell 18. The belt insertion portion 118 is fitted in the opening 100 of the shell 18 and supported by the slider guide wall 18C.

A substantially rectangular parallelepiped lock piece 120 is fitted into the lock piece holding portion 116. A pair of arms 120A are integrally formed on both sides of the rear end of the lock piece 120. Correspondingly, a pair of openings (not shown) are formed in the pull lever 122 (shown by the chain double-dashed line in FIG. 10), and the pin 124 is used with the arm 120A inserted into the openings. The lock piece 120 and the pull lever 122 are connected. A spring accommodating portion 126 is formed in the center of the lock piece 120, and a compression coil spring 128 is accommodated in the spring accommodating portion 126. One end of the compression coil spring 128 is abutted and locked on the lock piece 120, and the other end is abutted and locked on the rear end wall 114A of the slider 114. Therefore, the compression coil spring 128 presses and urges the lock piece 120 in the direction of fitting the lock piece 120 into the engagement hole 102.

Further, the belt insertion portion 118 is formed with belt insertion holes 119 for inserting and holding the child restraint belt 26. The belt insertion hole 119 is formed so as to overlap with the above-described upper pad 108 of the headrest 22 and the belt insertion hole 112 formed in the upper center of the headrest shell 104 in a front view (see FIG. 8).

In the slider 114 described above, a bolt insertion hole 130 is formed at an upper end corner of a pair of belt insertion portions 118. Then, at the position where the bolt insertion hole 130 is formed, the headrest shell 104 of the headrest 22 and the slider 114 are fastened by bolts and nuts (not shown). Therefore, the headrest 22 and the slider 114 integrally slide up and down.

The base end portion of the above-described child restraint belt 26 is wound up by an ELR type webbing retractor (not shown) disposed below the shell 18, and a part which is split into two in the middle is wound. Tongue plates 28 (see FIG. 1 and FIG. 2) are attached to the tips. These tongue plates 28 are adapted to be engaged with a crotch buckle 30 provided upright near the front end of the seat cushion of the child seat body 14.

The operation of this embodiment will be described below. After the operation of fixing the child seat 10 (infant seat or child seat) to the seat cushion 16A of the vehicle seat 16 and the reclining operation are completed, the mounting height of the child restraint belt 26 and the height of the headrest 22 are increased. To adjust the height, follow the procedure below.

First, the pull lever 122 is pulled in a direction away from the slider 114. As a result, the lock piece 120 is pulled against the biasing force of the compression coil spring 128, so that the lock piece 120 is disengaged from the engagement hole 102. When the lock piece 120 slides back and forth by pulling the pull lever 122, the lock piece 120 is guided by the lock piece guide wall 18D of the shell 18.

Next, the headrest 22 is raised or lowered to a desired portion while maintaining the pull lever 122 in a pulled state. When the headrest 22 slides up and down, the slider 114 connected to it also slides up and down. At this time, the headrest 22 is guided by the headrest guide wall 18B of the shell 18, and the slider 114 is guided by the slider guide wall 18C of the shell 18. Then, when the headrest 22 and the slider 114 are slid to a desired position, the pulling force exerted on the pull lever 122 is released. As a result, the lock piece 120 is pressed toward the headrest 22 by the biasing force of the compression coil spring 128, and is fitted into the corresponding engagement hole 102. By the above operation, the adjustment of the mounting height of the child restraint belt 26 is completed, and at the same time, the height adjustment of the headrest 22 is completed.

After the wearing height of the child restraint belt 26 and the height of the headrest 22 are adjusted to the optimum positions in this manner, the child is seated on the child seat body 14. Then, the tongue plate 28 is engaged with the crotch bag 30 so that the child restraint belt 26 is attached. As a result, the child is restrained by the child restraint belt 26.

When the vehicle suddenly decelerates in this state, the load acting on the child restraint belt 26 due to the inertial movement of the child is transmitted to the slider 114 at one end. Further, the load transmitted to the slider 114 is transmitted to the upper end portion of the shell 18 because the slider 114 is in contact with the back surface of the shell 18. And finally, it will be transmitted to the vehicle body via the webbing 32 fixing the base 12.

As described above, in the present embodiment, the shell 18 is provided with the pair of openings 100 at the upper end thereof, the headrest 22 is provided on the front side thereof, and the slider 114 connected to the headrest 22 is provided on the rear side thereof. Since the child restraint belt 26 is inserted through and supported by the slider 114, the headrest 22 need only be slid up and down when adjusting the mounting height of the child restraint belt 26, that is, the headrest. At the same time as adjusting the height of 22, the wearing height of the child restraint belt 26 can be adjusted. As a result, the operability of adjusting the wearing height of the child restraint belt 26 can be improved.

To explain this effect in more detail, the load acting on the child restraint belt 26 at the time of sudden deceleration of the vehicle is not directly transmitted to the shell 18, but is transmitted once to the slider 114 and then from the slider 114 to the shell 18. Since it is configured to be transmitted, even if a relatively large hole is provided at the upper end of the shell 18, there is no problem in strength. Therefore, it is possible to provide the opening 100 at the upper end of the shell 18 to the same extent as when all the conventional belt insertion holes of a plurality of stages are communicated. Therefore, if the child restraint belt 26 is positioned in the opening 100 and the headrest 22 integrated with the slider 114 through which the child restraint belt 26 is inserted is slid, the mounting height of the child restraint belt 26 can be increased by itself. It is possible to change the height. Moreover, the mounting height of the child restraint belt 26 can be adjusted simultaneously with the height adjustment of the headrest 22.

In addition, the above-described effect is based on the effect that the mounting height of the child restraint belt 26 and the height of the headrest 22 can be adjusted steplessly within the range of the height dimension of the opening 100. To be done. That is, in this embodiment, four engaging holes 102 are formed vertically, but the number of engaging holes 102 formed is increased, or a pinion, a rack or the like is formed without forming the engaging holes 102. By adding the holding structure of the headrest 22 used, it is possible to adjust the mounting height of the child restraint belt 26 and the height of the headrest 22 steplessly within the height dimension of the opening 100. Become. Therefore, the optimum wearing state of the child restraint belt 26 and the height of the headrest 22 can be obtained for the child.

In this embodiment, in order to hold the slider 114 at the adjusted height, the structure of the engagement hole 102, the lock piece 120, etc. is applied, but the present invention is not limited to this, and the slider 114 can be adjusted to the height. Any configuration can be applied as long as it can be securely held in the adjusted position.

[0040]

[Effect of device]

 As described above, the child seat according to the present invention is configured such that the height of wearing the child restraint belt on the child can be adjusted simply by sliding the headrest along the height direction of the skeletal member. , It has an excellent effect that the operability when adjusting the wearing height of the child restraint belt for a child can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a child seat body and a base are separated from each other.

FIG. 2 is a perspective view showing a normal use state when the child seat of FIG. 1 is used as a child seat.

FIG. 3 is a rear view showing the child seat body as viewed from the rear side.

FIG. 4 is a perspective view showing a fixed state of a base to a seat cushion.

FIG. 5 is a perspective view showing a case where the child seat body is tilted up from the normal use state of FIG. 2 and then separated from the base.

FIG. 6 is a perspective view showing a case where the child seat body is moved from the normal use state of FIG. 2 to the reclining highest position and then separated from the base.

FIG. 7 is a perspective view showing a usage state when the child seat shown in FIG. 1 is used as an infant seat.

FIG. 8 is a schematic front view showing the internal structure of the headrest shown in FIG. 1 in a see-through manner.

9 is an exploded perspective view of the headrest shown in FIG. 8 and members related thereto.

10 is a sectional view taken along line 10-10 of FIG.

[Explanation of symbols]

 10 Child Seat 18 Shell (Skeletal Member) 22 Headrest 26 Child Restraint Belt 100 Opening 114 Slider

Continued Front Page (72) Inventor Tomonori Amano Noda No. 1 Toyota, Oguchi-cho, Niwa-gun, Aichi Prefecture Tokai Rika Electric Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A skeleton member for supporting the upper body of a seated child, an opening formed in the skeleton member with the height direction of the skeleton member as a longitudinal direction, and having a predetermined opening area; A headrest that is arranged on the front side of the skeleton member and is slidable along the height direction of the skeleton member; and a headrest that is connected to the headrest and that is in contact with the rear surface side of the skeleton member. A high-strength slider guided by the opening and slidable along the height direction of the skeleton member; and a child restraint belt positioned in the opening and inserted through the slider. Seat for children characterized by.