JP2017071239A - child seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a child seat which permits angle adjustment of a standing wall disposed on a front side end of a seat with a simple structure.SOLUTION: A child seat includes: a seat (12) of which the front side end is opened in order that a child may take the seat; a standing wall (20) provided so as to permit turning among a standing-up position, a horizontal position and a descending position via a pair of turning shafts (23a, 23b) arranged on the front side end both sides of the seat; and a pair of rotation support members (30a, 30b) which support rotatably respective turning shafts via an axial line extended in a vertical direction. Therein, the pair of turning shafts are provided so as to take tapered positional relation which is tapered toward the front side and, further, an energization member which is energized so as to minimize a tapered angle formed on extension lines of the front side of the pair of turning shafts.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a child seat, and more particularly to a child seat having a standing wall provided at a front end of a seat on which a child is seated.

  Conventionally, in order to adjust the angle of the standing wall provided at the front end of the seat of the childcare device, it has been necessary to provide a lock mechanism.

  Japanese Patent Application Laid-Open No. 60-45467 (Patent Document 1) discloses a baby carriage bed in which the posture of the front bottom surface portion of a seat can be changed between a horizontal state and a suspended state. A link bar that rotatably supports the front bottom surface is provided between the front bottom surface and the baby carriage body, and the link bar can change the posture of the front bottom surface between a horizontal state and a suspended state. It is disclosed that there is.

  Japanese Patent Laid-Open No. 2000-301969 (Patent Document 2) discloses a child seat that can tiltably support a footrest provided on the front end side of a seat portion. It is disclosed that the footrest can be tilted to three positions in accordance with the tilting operation of the backrest portion.

JP 60-45467 A JP 2000-301969 A

  As described above, the baby carriage bed of Patent Document 1 needs to be provided with a link rod in order to change the front bottom surface portion between a horizontal state and a suspended state. Furthermore, since the footrest of the child seat of Patent Document 2 can be tilted simultaneously with the tilting operation of the backrest portion, the structure is complicated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a child seat capable of adjusting the angle of the standing wall provided at the front end of the seat with a simple structure. With the goal.

  For this purpose, the child seat according to one aspect of the present invention has a seat with an open front end on which a child sits, and a rising position and a horizontal position via a pair of pivot shafts arranged on both sides of the front end of the seat. A standing wall provided so as to be able to rotate between a lowered position and a pair of rotation support members that rotatably support each rotation shaft via an axis extending in the vertical direction. The biasing member is provided so as to have a taper position that tapers toward the front, and further biases so as to reduce the taper angle formed by the front extension line of the pair of rotating shafts. Is provided.

  Preferably, the standing wall is a pair of flat plate members having a size capable of closing the opened front end of the seat, and a pair of plate members fixed to both ends in the width direction of the flat plate member and supported by the front end of the seat via a rotation shaft. An attachment member.

  Preferably, the flat plate member is provided so as to be bendable.

  Preferably, the rotation shaft and the rotation support member have interference portions that interfere with each other when the standing wall is in the horizontal position.

  Preferably, the urging member is a torsion spring that urges the rotation support member to rotate.

  ADVANTAGE OF THE INVENTION According to this invention, the child seat which enables the angle adjustment of the standing wall provided in the front end of the seat with a simple structure can be provided.

It is a front view which shows the child seat which concerns on embodiment of this invention. It is a perspective view which shows the child seat which concerns on embodiment of this invention. It is a perspective view which takes out and shows a seat in an embodiment of the invention. It is a top view which decomposes | disassembles and shows an attachment member and a rotation support member. It is a schematic diagram which shows the state of the rotation support member in case a standing wall is a standup position and a descent position. It is a schematic diagram which shows the state of the rotation support member in case a standing wall is a horizontal position. (A) is a plan view when the standing wall is in the lowered position, and (B) is a side view when the standing wall is in the lowered position. It is a top view in case a standing wall exists in a horizontal position. (A) is a top view in case a standing wall exists in a horizontal position, (B) is a side view in case a standing wall exists in a horizontal position. (A) is a plan view when the standing wall is at the rising position, and (B) is a side view when the standing wall is at the rising position. It is sectional drawing at the time of cut | disconnecting by the XI-XI line of FIG. It is sectional drawing corresponding to FIG. 11 when a standing wall exists above a horizontal position. FIG. 12 is a cross-sectional view corresponding to FIG. 11 when the standing wall is in the rising position.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  First, an outline of the child seat 1 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a front view in which the sheet body 11 is placed sideways with respect to the base 10 main body to be in a bed state, FIG. 1 (A) shows a state in which the standing wall 20 is in a rising position, and FIG. The state which made the standing wall 20 into the lowered position is shown. FIG. 2 is a front view of the seat body 11 facing forward with respect to the base body 10 in a chair state, and shows a state where the standing wall 20 is in the lowered position. In the description of the child seat 1, the horizontal direction of the arrow A <b> 1 shown in FIG. 2 corresponds to the left-right direction viewed from the front of the child seat 1. The front-rear direction of the arrow A <b> 2 shown in FIG. 2 corresponds to the front-rear direction of the child seat 1.

  The child seat 1 according to the present embodiment is placed on a seat seat of a passenger car and is fixed by a seat belt attached to the passenger car or ISO-FIX. The child seat 1 includes a base body 10 and a sheet body 11. The base body 10 is mounted on a seat seat of a passenger car and supports the seat body 11 from below. The sheet body 11 is attached to the upper side of the base body 10 and is rotatably supported by the base body 10 about an axis extending in the vertical direction. Therefore, the child seat 1 can be supported with respect to the base body 10 in the lateral direction shown in FIG. 1, the forward direction shown in FIG. 2, and the rear side not shown.

  An infant sits on the seat body 11. For this reason, the seat body 11 has a seat 12 that supports the buttocks of the infant and a backrest portion 13 that supports the back of the infant. As shown in FIG. 1, the seat 12 and the backrest portion 13 are in a bed state in which the backrest portion 13 is tilted most backward and in a chair state in which the backrest portion 13 is raised most up as shown in FIG. 2.

  Since the front end of the seat 12 is open, a standing wall 20 is provided on the front end side of the seat 12. The standing wall 20 can be displaced to a rising position shown in FIG. 1 (A) and a lowered position shown in FIG. 1 (B).

  As shown in FIG. 1A, in a state where the infant is held on the child seat 1, the sheet body 11 is placed sideways with respect to the base 10 main body to be in a bed state, and the standing wall 20 is set to the standing position. In this case, since the standing wall 20 faces the door of the service car, it plays a role of mitigating the impact at the time of a side collision. That is, the standing wall 20 serves as a cushion between the door of the passenger car and the leg of the infant.

  As shown in FIG. 1 (B), when the infant is placed on or held in the child seat 1, the standing wall 20 is set to the lowered position. Thereby, even when carrying out the operation | work which puts the infant on the child seat 1 or holds it, the standing wall 20 does not get in the way. Furthermore, as shown in FIG. 2, when the infant becomes large and the child seat 1 is used in a chair state, the standing wall 20 does not hit the foot because the standing wall 20 does not hit the foot.

  The standing wall 20 will be described with reference to FIG. FIG. 3 is a perspective view showing the seat 12 taken out in the embodiment of the present invention.

  The standing wall 20 is provided so as to be able to rotate between a rising position, a horizontal position, and a descending position via a pair of rotating shafts 23 a and 23 b disposed on both sides of the front end of the seat 12.

  Each rotation shaft 23a, 23b is supported by a pair of rotation support members 30a, 30b that are rotatably supported via an axis extending in the vertical direction. That is, the standing wall 20 rotates so as to draw a vertical semicircular arc around the rotation shafts 23a and 23b. Further, the rotation shafts 23a and 23b are supported by the rotation support members 30a and 30b so as to be rotatable in the left-right direction.

  Cover portions 14a and 14b are provided on the front sides of both ends of the seat 12 in the width direction. The cover portion 14a is a member that regulates the clockwise bias of the rotation support member 30a, and the cover portion 14b is a member that regulates the counterclockwise bias of the rotation support member 30b.

  The standing wall 20 is fixed to a flat plate member 21 having a size capable of closing the opened front end of the seat 12 and both ends in the width direction of the flat plate member 21, and the front of the seat 12 via a pair of rotating shafts 23 a and 23 b. A pair of attachment members 22a and 22b supported at the ends may be included. The flat plate member 21 is provided so as to be bendable. The flat plate member 21 is made of thin plastic, for example. The flat plate member 21 closes the front end of the seat 12 when provided at the raised position, and opens the front end of the seat 12 when provided at the lowered position.

  FIG. 4 is an exploded plan view showing the attachment member 22a and the rotation support member 30a. With further reference to FIG. 4, the attachment member 22a and the rotation support member 30a will be described. Since the attachment member 22b and the rotation support member 30b are provided symmetrically with the attachment member 22a and the rotation support member 30a, description of the attachment member 22b and the rotation support member 30b is omitted.

  The attachment member 22 a is a member that connects the flat plate member 21 and the rotation support member 30 a and is provided on the front left end side of the seat 12. Specifically, the attachment member 22a has an attachment surface 24a, a first through hole 25a, and a second through hole 26a. The attachment surface 24a is a surface on which the first through hole 25a and the second through hole 26a are provided. A cushion material is attached to the front surface of the attachment surface 24a, and the flat plate member 21 is attached to the rear surface of the attachment surface 24b. A screw for attaching a cushion material (not shown) attached in front of the flat plate member 21 passes through the first through hole 25a. A screw for attaching the flat plate member 21 passes through the second through hole 26a. A pair of extending portions 241a extending upward are provided at the left and right ends of the mounting surface 24a. Between the pair of extending portions 241a, a rotation shaft 23a for rotating the attachment member 22a in the vertical direction is provided. The rotation shaft 23a will be described later.

  The rotation support member 30a may include a front case 32a, a rear case 33a, and a biasing member 31a disposed in the cases 32a and 33a. FIG. 4 is a view showing a state in which the front case 32a is removed. Through holes 321a and 331a having a circular shape in plan view are provided in the center of the cases 32a and 33a. A rotary shaft 40a is provided in the through holes 321a and 331a. The rotation support member 30a rotates in the left-right direction around the rotation shaft 40a. The urging member 31a may be a torsion spring that urges the rotation support member 30a in the clockwise direction. In this case, the case 32a, 33a is provided with an opening 332a so that one of the urging members 31a contacts. Below the cases 32a and 33a, semicircular arc-shaped support portions 35a and 36a are provided so as to be rotatable with respect to the outer periphery of the columnar rotation shaft 23a. The torsion spring 31a will be described later.

  The operation of the rotation support members 30a and 30b will be described with reference to FIGS. FIG. 5 is a schematic diagram illustrating the operation of the rotation support members 30a and 30b when the standing wall 20 is in the rising position and the lowering position. FIG. 6 is a schematic diagram illustrating the operation of the rotation support members 30a and 30b when the standing wall 20 is in the horizontal position.

As shown in FIG. 5, when the standing wall 20 is provided at the rising position or the lowering position, the pair of rotating shafts 23 a and 23 b are provided so as to have a taper positional relationship that tapers forward. . Specifically, the angle theta ₁ which intersect an extension line of extension and rotation shaft 23b of the rotary shaft 23a is provided so as to be smaller than 180 ° angle. Furthermore, the rotation shafts 23a and 23b include torsion springs 31a and 31b (FIG. 4) that bias the taper angle formed by an extension line ahead of the pair of rotation shafts 23a and 23b. As shown by the arrows in FIG. 5, the rotating shaft 23a is urged clockwise about the rotating shaft 40a by the torsion spring 31a, and the rotating shaft 23b is counteracted about the rotating shaft 40a by the torsion spring 31b. It is energized around the clock.

  First, the operation of the rotation support members 30a and 30b when the flat plate member 21 is not attached will be described. In the following description, the standing wall 20 is described as including only the attachment members 22a and 22b.

As shown in FIG. 5, in a state where no attaching a plate member 21, when the vertical wall 20 to the lowered position, the attachment member 22a, the second through hole 26a of 22b, the horizontal distance between 26b becomes _{L 0.} When the standing wall 20 is set to the horizontal position, the horizontal distance between the second through holes 26a and 26b becomes L _{1 which} is larger than L _{0 as} shown by the broken line in FIG. If the vertical wall 20 to rise position, as shown in FIG. 5, the mounting member 22a, the second through hole 26a of 22b, the horizontal distance between 26b returns to _{L 0.} The angle at which the extension line of the rotation shaft 23a and the extension line of the rotation shaft 23b intersect is θ ₁ at all positions of the standing wall 20 in the rising position, the lowering position, and the horizontal position.

  Next, the operation of the standing wall 20 when the flat plate member 21 is attached will be described. In the following description, the standing wall 20 includes mounting members 22 a and 22 b and a flat plate member 21.

As shown in FIG. 5, when the vertical wall 20 is in the lowered position, as if not installed flat plate member 21, the mounting member 22a, the second through hole 26a of 22b, the horizontal distance between 26b becomes _{L 0.} However, when the vertical wall 20 is in a horizontal position, as shown in FIG. 6, the mounting member 22a, the second through hole 26a of 22b, the horizontal distance between 26b becomes _{L 0.} This is because, since the flat plate member 21 is attached, the rotation support members 30a and 30b move in directions toward each other against the biasing of the torsion springs 31a and 31b. In this case, the extension line and intersect the corner of extension and rotation shaft 23b of the rotary shaft 23a is, theta _0, and becomes greater than theta _1. If the vertical wall 20 to rise position, as shown in FIG. 5, the mounting member 22a, the second through hole 26a of 22b, the horizontal distance between 26b returns to _{L 0.} In this case, also corner and intersects the extension line of the extended line and the rotating shaft 23b of the rotary shaft 23a, the flow returns to theta _1.

  Considering the operation of the rotation support members 30a and 30b described above, the operation when the standing wall 20 is provided at the lowered position, the horizontal position, and the raised position will be described. FIG. 7A is a plan view when the standing wall 20 is in the lowered position, and FIG. 7B is a side view when the standing wall 20 is in the lowered position. FIG. 8 is a plan view when the standing wall 20 is in a horizontal position with the flat plate member 21 not attached. FIG. 9A is a plan view when the standing wall 20 is in the horizontal position with the flat plate member 21 attached, and FIG. 9B is a side view when the standing wall 20 is in the horizontal position. It is. FIG. 10A is a plan view when the standing wall 20 is in the rising position, and FIG. 10B is a side view when the standing wall 20 is in the rising position.

In FIG. 7, the standing wall 20 is provided at the lowered position. In this case, the mounting member 22a for supporting the vertical wall 20, the second through hole 26a of 22b, the horizontal distance between 26b is _{L 0.} In this case, the flat plate member 21 is curved so as to protrude forward.

FIG. 8 is a diagram illustrating a state in which the standing wall 20 is provided in a horizontal position and the flat plate member 21 is not attached to the second through holes 26a and 26b. The attachment member 22a is urged clockwise by a torsion spring 31a. The attachment member 22b is urged counterclockwise by the torsion spring 31b. Thereby, if the flat plate member 21 is not attached, the horizontal distance between the second through holes 26a and 26b becomes L _{1 which} is larger than L ₀ .

9 is different from FIG. 8 in that the upright wall 20 is provided in the horizontal position as in FIG. 8, but the flat plate member 21 is attached to the second through holes 26a and 26b. The attachment members 22a and 22b are urged to the left and right ends by the torsion springs 31a and 31b, respectively. However, since the flat plate member 21 is attached, the movement of the attachment members 22a and 22b to the ends in the left and right directions is is restricted, the second through hole 26a, the distance between 26b is kept in _{L 0.} In this case, the flat plate member 21 is flat without being curved. Therefore, this position becomes a thought point of the flat plate member 21.

In FIG. 10, the standing wall 20 is provided at the rising position. In this case, the mounting member 22a for supporting the vertical wall 20, the second through hole 26a of 22b, also the horizontal distance between 26b, as if standing wall 20 is provided in the lowered position, is _{L 0.} In this case, the flat plate member 21 is curved so as to protrude outward.

  Therefore, when the standing wall 20 rotates between the lowered position shown in FIG. 7, the horizontal position shown in FIG. 9, and the rising position shown in FIG. 10, the horizontal position shown in FIG. It becomes. Thereby, when the standing wall 20 moves upward beyond the horizontal position, the standing wall 20 is disposed at the rising position. If the standing wall 20 does not move beyond the horizontal position, the standing wall 20 remains in the lowered position.

  By adopting such a configuration, the standing wall 20 can be fixed at the lowered position shown in FIG. 7 and the raised position shown in FIG. 10, so that the angle of the standing wall 20 can be adjusted with a simple structure without providing a separate locking member. can do.

  11 is a cross-sectional view taken along line XI-XI (FIG. 7) when the standing wall 20 is in the lowered position, and FIG. 12 is a sectional view corresponding to FIG. 11 when the standing wall 20 is above the horizontal position. FIG. 13 is a cross-sectional view corresponding to FIG. 11 when the standing wall 20 is in the rising position. Note that the attachment member 22b and the rotation support member 30b are provided symmetrically with the attachment member 22a and the rotation support member 30a, and thus the description thereof is omitted.

  Referring to FIG. 11, a first interference portion 231b that protrudes toward the support portion 35b is provided on the outer peripheral surface of the rotation shaft 23b. The support portion 35b of the rotation support member 30b is provided with a second interference portion 351b that protrudes toward the rotation shaft 23b. The first interference unit 231b and the second interference unit 351b interfere with each other when the standing wall 20 is in the horizontal position.

  Specifically, when the standing wall 20 is in the lowered position, as shown in FIG. 11, the first interference portion 231b of the rotation shaft 23b is located at a position away from the second interference portion 351b of the support portion 35b. is there. When the standing wall 20 rotates slightly above the horizontal position, as shown in FIG. 12, the first interference portion 231b of the rotation shaft 23b is in a position where it abuts on the second interference portion 351b of the support portion 35b. When the upright wall 20 is in the rising position, as shown in FIG. 13, the first interference portion 231b of the rotation shaft 23b gets over the inclined surface of the second interference portion 351b of the support portion 35b, and the first interference portion 231b contacts the second interference part 351b. Thereby, the standing wall 20 can be fixed at the rising position.

  Even without providing the interference portions 231b and 351b, the standing wall 20 can be fixed at the rising position. However, by providing the interference portions 231b and 351b, when the standing wall 20 is in the rising position, even if a certain level of force is applied to the standing wall 20, the standing wall 20 cannot easily fall to the lowered position. it can. Further, when the standing wall 20 is changed from the rising position to the lowering position, it is only necessary to apply a certain level of force to the standing wall. Therefore, the angle of the standing wall 20 can be adjusted with a simple structure.

  In addition, the flat plate member 21 which comprises the standing wall 20 should just be provided so that bending is possible, and is not limited to plate shape. For example, the flat plate member 21 may be a bar-shaped member that can be bent or a string shape.

  Moreover, although biasing member 31a, 31b demonstrated as a torsion spring, it is not limited. The urging forces 31a and 31b may be coil springs provided between the rotation support members 30a and 30b.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  DESCRIPTION OF SYMBOLS 1 Child seat, 10 base body, 11 seat body, 12 seat, 13 backrest part, 14a, 14b cover part, 20 standing wall, 21 flat plate member, 22a, 22b attachment member, 23a, 23b rotating shaft, 24a, 24b attachment surface, 25a 1st through hole, 26a, 26b 2nd through hole, 30a, 30b Rotation support member, 31a, 31b Biasing member (torsion spring), 32 Front case, 33 Rear case, 35a, 36a Support part, 40a, 40b Rotation Axis, 321a through-hole, 241a extension part, 231b first interference part, 331b through-hole, 332a opening, 351b second interference part.

Claims (5)

A seat with an open front where the child sits;
A standing wall provided so as to be able to rotate between a rising position, a horizontal position and a descending position via a pair of rotating shafts arranged on both sides of the front end of the seat;
A pair of rotation support members that rotatably support the respective rotation axes via an axis extending in the vertical direction;
The pair of rotation shafts are provided so as to be in a positional relationship of a taper tapering toward the front, and
A child seat comprising a biasing member that biases the taper angle formed by an extension line ahead of the pair of rotation shafts to be small. The standing wall has a flat plate member having a size capable of closing the opened front end of the seat;
The child seat according to claim 1, further comprising: a pair of attachment members fixed to both ends in the width direction of the flat plate member and supported by a front end of the seat via the rotation shaft.   The child seat according to claim 2, wherein the flat plate member is provided so as to be bendable.   The child seat according to any one of claims 1 to 3, wherein the rotation shaft and the rotation support member have interference portions that interfere with each other when the standing wall is in a horizontal position.   The child seat according to any one of claims 1 to 4, wherein the urging member is a torsion spring that urges the rotation support member to rotate.

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