WO2023286230A1 - Child car seat - Google Patents
Child car seat Download PDFInfo
- Publication number
- WO2023286230A1 WO2023286230A1 PCT/JP2021/026582 JP2021026582W WO2023286230A1 WO 2023286230 A1 WO2023286230 A1 WO 2023286230A1 JP 2021026582 W JP2021026582 W JP 2021026582W WO 2023286230 A1 WO2023286230 A1 WO 2023286230A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- cradle
- holding
- state
- child seat
- Prior art date
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2869—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle rotatable about a vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2821—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle having a seat and a base part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
- B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
- B60N2/2857—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle characterised by the peculiar orientation of the child
Definitions
- the present invention relates to a child seat, and is suitable for use, for example, when attached to a car.
- the guardian when a child is to be placed in or removed from a child seat attached to the vehicle, the guardian must open the door of the vehicle and place the child seat in the vicinity of the door opening on the outside of the vehicle, i.e., the child seat, due to the structure of the vehicle. It is often located on the left or right side of the Therefore, it is conceivable that an infant can be easily seated in a child seat by rotating the seat portion with respect to the cradle and directing the front of the seat body toward the guardian.
- the child seat has a function to lock the rotation direction only in the above-mentioned forward-facing and rearward-facing states. can't For this reason, there is a problem that it is not easy for a guardian to seat an infant on or off the child seat while the child seat is attached to the vehicle.
- the present invention has been made in consideration of the above points, and intends to propose a child seat that allows an infant to be easily seated or put down while attached to a vehicle.
- the child seat of the present invention comprises a pedestal, a seat body that is rotatable about a predetermined central axis with respect to the pedestal, and a rotatable seat body with respect to the pedestal. or a rotation permission prohibition part that prohibits the rotation in a posture in which the seat body is oriented in a predetermined stable direction, and a rotation permission prohibition part that is provided in the seat body and the seat body rotates around the central axis. and a portion to be regulated that displaces along a circumferential track, and a portion to be regulated that is displaced when the seat main body rotates to face a holding direction different from the stabilizing direction with respect to the cradle.
- a regulation section for regulation is provided.
- the regulated portion is regulated by the regulating portion.
- the state facing the holding direction can be held.
- FIG. 1 is a schematic perspective view showing the configuration of a child seat.
- FIG. 2 is a schematic perspective view showing a forward-facing state of the child seat.
- FIG. 3 is a schematic perspective view showing a rearward facing state of the child seat.
- FIG. 4 is a schematic perspective view showing the configuration of the cradle portion.
- FIG. 5 is a schematic plan view showing the configuration of the cradle portion.
- FIG. 6 is a schematic perspective view showing the configuration of the lower part of the cradle.
- FIG. 7 is a schematic plan view showing the configuration of the lower part of the cradle.
- FIG. 8 is a schematic perspective view showing the configuration of a holding protrusion.
- FIG. 9 is a schematic perspective view showing the configuration of the seat portion and the holding portion.
- FIG. 10 is a schematic perspective view showing the configuration of the bottom portion of the seat body.
- FIG. 11 is a schematic perspective view showing the configuration of the lower engaged body.
- FIG. 12 is a schematic cross-sectional view showing the configuration of the lower engaged body.
- FIG. 13 is a schematic perspective view showing how the holding portion is engaged with the upper engaged body and the lower engaged body.
- FIG. 14 is a schematic perspective view showing how the holding portion and the lower engaged body are engaged.
- FIG. 15 is a schematic perspective view showing the configuration of the seat adjustment mechanism and the lever operating section.
- FIG. 16 is a schematic diagram showing the configuration of a lever operating portion;
- FIG. 17 is a schematic diagram showing a state in which the reclining operation lever is shifted to the change position.
- FIG. 18 is a schematic diagram showing a state in which the rotation control lever is shifted to the change position; 19A and 19B are schematic diagrams showing a protruded state and a housed state of the central shaft. 20A and 20B are schematic diagrams showing a protruded state and a housed state of the rotation lock shaft.
- FIG. 21 is a schematic cross-sectional view showing how the cradle portion and the seat portion are combined.
- FIG. 22 is a schematic cross-sectional view showing how the cradle portion and the seat portion are combined.
- 23A to 23C are schematic diagrams showing states of each shaft in a steady state.
- 24A to 24C are schematic diagrams showing the state of each shaft at the start of the reclining motion.
- 25A to 25C are schematic diagrams showing states of each shaft during reclining motion.
- 26A to 26C are schematic diagrams showing the state of each shaft after the end of the reclining motion.
- 27A to 27C are schematic diagrams showing the state of each shaft at the start of rotation.
- 28A to 28C are schematic diagrams showing how each shaft is rotated.
- 29A to 29C are schematic diagrams showing the state of each shaft after the rotation operation is completed.
- FIG. 30 is a schematic perspective view showing the relationship between the lower engaged body and each holding protrusion.
- FIG. 31 is a schematic cross-sectional view showing the relationship between the lower engaged body and each holding protrusion.
- FIG. 32 is a schematic diagram showing the positional relationship among the intermediate cylindrical portion, the circumferential track of the engagement maintaining portion, and the holding protrusions.
- FIG. 33 is a schematic diagram showing the relationship between the engagement maintaining portion and the holding projection when the seat portion rotates.
- FIG. 34 is a schematic diagram showing the relationship between the engagement maintaining portion and the holding projection when the seat portion rotates.
- FIG. 35 is a schematic diagram showing the relationship between the engagement maintaining portion and the holding projection when the seat portion rotates.
- FIG. 1 is a schematic perspective view showing the entire child seat 1 according to this embodiment.
- FIG. 2 is a schematic perspective view showing the child seat 1 in a forward facing state.
- FIG. 3 is a schematic perspective view showing the child seat 1 facing backward.
- the child seat 1 has a child seat body 2 and support legs 3 detachably attached to the child seat body 2 .
- the child seat body 2 has a pedestal portion 10 attached to a vehicle seat 100 of a vehicle (for example, an automobile) and a seat portion 30 supported on the pedestal portion 10 .
- the seat portion 30 including the seating surface of the child seat 1 is covered with a cushioning cover 5 as shown in FIG. It is
- the forward direction in the traveling direction of the vehicle is defined as “front”, and the opposite side is defined as “rear”.
- the state of the seat portion 30 shown in FIGS. 1 and 2 is referred to as the "forward-facing state” of the seat portion 30, and the state of the seat portion 30 illustrated in FIG. called “state”.
- leftward and rightward directions viewed from the parent or the like facing the "front" side of the child seat 1 are referred to as “left” and "right", respectively.
- the seat portion 30 can be selectively rotated with respect to the cradle portion 10 between a forward facing state (FIGS. 1 and 2) and a rearward facing state (FIG. 3) by a rotation mechanism to be described later. Further, the seat portion 30 can be reclining by changing the position and inclination angle in the front-rear direction with respect to the cradle portion 10, that is, by selecting one of a plurality of reclining states by means of a reclining mechanism, which will be described later.
- FIG. 4 is a schematic perspective view of the cradle portion 10
- FIG. 5 is a schematic top view of the cradle portion 10.
- the cradle portion 10 includes a base portion 10A placed on the seat portion of the vehicle seat 100 (FIG. 1), an upright portion 10B extending upward from the rear portion of the base portion 10A and facing the back portion of the vehicle seat 100, and the base portion 10A. and an inclined portion 10C positioned between the standing portions 10B.
- the cradle portion 10 is composed of an upper cradle upper portion 11 and a lower cradle lower portion 12 .
- the pedestal upper portion 11 and the pedestal lower portion 12 are both molded from a resin material having a relatively high strength and are fitted together to form a pedestal internal space 10S inside the pedestal portion 10 . .
- a pedestal upper support surface 13 is formed on the upper surface of the base portion 10A in the pedestal upper portion 11 .
- the pedestal upper support surface 13 is a portion of a curved surface protruding downward, and is formed in a concave shape when viewed from above. Further, on the surface of the pedestal upper support surface 13, a plurality of minute protrusions 13A each formed in a convex curved shape are aligned and arranged.
- a base hole 14 penetrating vertically is formed in the central portion of the cradle upper support surface 13 .
- the base hole 14 is formed as an elongated hole having a long axis generally along the front-rear direction.
- a support wall 14A is erected downward from the pedestal upper support surface 13 at the peripheral edge of the base hole 14 .
- the support wall 14A has a predetermined length in the vertical direction and is formed in an annular shape as a whole.
- An inclined surface 15 is formed on the upper surface or front surface of the inclined portion 10C in the upper part of the cradle 11 .
- the slope 15 is formed with two guide grooves 16 (16A and 16B) extending vertically and extending in the front-rear direction.
- a rectangular opening 18 is formed in the front surface 17 of the upright portion 10B of the cradle upper portion 11 near the center in the left-right direction.
- a blower fan (not shown) or the like can be attached to the opening 18 .
- FIG. 6 is a schematic perspective view of the cradle lower portion 12.
- FIG. FIG. 7 is a schematic top view showing a portion of the lower cradle 12.
- FIG. A lower pedestal support surface 21 is formed below the base hole 14 (FIGS. 4 and 5) in the pedestal lower portion 12 .
- the pedestal lower support surface 21 as the pedestal supporting surface is located above the bottom surface of the pedestal lower portion 12 and has a shape that protrudes from the bottom surface.
- the pedestal lower support surface 21 is a portion of a curved surface protruding downward, and is formed in a concave shape when viewed from above.
- the pedestal lower support surface 21 is formed in a range wider than a base hole projection area AR14 (FIG. 7) obtained by projecting the base hole 14 downward.
- shaft holes 22 (22A, 22B, and 22C) made of round holes are drilled at three locations spaced apart in the front-rear direction along an imaginary center line CL21 in the left-right direction.
- Each shaft hole 22 as a shaft supporting portion has a central axis perpendicular to the support surface 21 and has a predetermined depth.
- Axial grooves 23 (23A and 23B) extending in the front-rear direction are formed in the lower support surface 21 of the pedestal at left and right positions separated from the center line CL21 by predetermined distances.
- projecting pedestal parts 24 are formed on the left and right sides of the pedestal lower support surface 21, respectively.
- the upper surface of the projecting base portion 24 is formed by slightly downwardly moving a curved surface obtained by extending the lower support surface 21 to the left and right outward in parallel.
- the holding projection 25L1 has a projection body portion 25A, a reinforcing portion 25B, and a contact portion 25C, as shown in an enlarged schematic perspective view of FIG.
- the projection main body 25A is formed in a rectangular parallelepiped shape as a whole, which is shorter in the front-rear direction than in the up-down direction and further shorter in the left-right direction.
- the reinforcing portion 25B is formed on the left side surface of the protrusion body portion 25A, that is, on the side opposite to the center line CL21 (FIG. 7) so as to protrude leftward from the lower end near the center in the front-rear direction of the left side surface toward the center. It is
- the contact portion 25C extends from the upper end near the center in the front-rear direction of the right side surface of the projection body portion 25A, that is, on the same side as the center line CL21 (FIG. 7), over about 1/3 of the entire range. , is formed to protrude to the right.
- the holding projection 25 has a substantially symmetrical shape with respect to the front-rear direction.
- the holding projection 25L1 is formed of a resin material as a part of the cradle lower portion 12, like the projection pedestal portion 24L, the cradle lower support surface 21, and the like. Therefore, the holding projection 25L1 is elastically deformable to some extent, and when an external force acts on the vicinity of the upper end toward the left (that is, in a direction away from the center line CL21), the vicinity of the upper end is bent leftward. It deforms and returns to its original shape when this external force ceases to act.
- the holding protrusions 25L2 to 25L5 are all configured similarly to the holding protrusion 25L1. Also, the holding projections 25R1 to 25R5 are all configured symmetrically with the holding projection 25L1.
- the cradle lower portion 12 is engaged with predetermined metal fittings (not shown) provided on the vehicle seat 100 (FIG. 1) near both left and right ends near the rear lower end.
- a seat engaging portion 28 is provided for this purpose.
- engaging operation portions 29 for operating the seat engaging portion 28 are provided near the left and right ends near the front lower end of the lower cradle 12 .
- support legs 3 are attached near the center of the left and right of the lower front end of the cradle lower portion 12 .
- FIG. 9 is a schematic perspective view showing how the seat portion 30 is disassembled into main parts and the configuration of the holding portion 50.
- the seat portion 30 is roughly composed of a seat body 31 , an upper engaged body 32 , a lower engaged body 33 , an annular cover 34 , a central shaft body 35 and a rotation lock shaft body 36 .
- the seat portion 30 includes a seat adjustment mechanism portion 60 for adjusting the position and direction of the seat portion 30 with respect to the cradle portion 10, an operation lever portion 70 for operating the seat adjustment mechanism portion 60, and the like. is also provided.
- the seat main body 31 is a portion that forms a space for mainly seating an infant, and is formed by integrally molding a hard resin material such as polypropylene, for example.
- the seat body 31 is roughly divided into an upper seat body upper portion 41, a middle seat body middle portion 42, a lower seat body lower portion 43, and a seat body bottom portion 44 forming a bottom portion.
- the upper portion 41 of the seat body is generally formed in a mortar shape or a funnel shape, and the rear side (hereinafter referred to as the backrest portion 41B) is higher than the front side.
- a head plate 91 (FIGS. 2 and 3) that functions as a headrest is attached to the upper portion of the backrest portion 41B.
- the head plate 91 has a shape in which the left and right portions of an elliptical plate-like member with a long axis in the horizontal direction and a short axis in the vertical direction are curved forward. Further, the head plate 91 is configured to be able to adjust its position by sliding vertically on the back support portion 41B. Incidentally, the head plate 91 is formed by integrally molding a hard resin material such as polypropylene.
- the seat main body middle portion 42 is formed in a hollow truncated cone shape centered on a virtual seat central axis X30 along the vertical direction, the lower side of which is smaller than the upper side.
- the seat body middle portion 42 is one size smaller than the seat body upper portion 41 and is connected to the seat body upper portion 41 at its upper end.
- the seat main body lower portion 43 is formed in a hollow cylindrical shape centered on the seat central axis X30, and its lower end is closed to form a seat main body bottom portion 44, while its upper end is open to form a seat main body. It is connected with the central part 42 .
- FIG. 10 is a schematic perspective view showing the lower portion of the seat body 31.
- the seat body bottom portion 44 is formed in a substantially flat plate shape, and a central shaft hole 47 made of a round hole is bored at a position through which the seat central axis X30 passes. Further, the seat body bottom portion 44 is formed with rotation lock shaft holes 48 on the right front side and the right rear side of the central shaft hole 47 . Incidentally, the seat body bottom portion 44 is also provided with a screw hole or the like for attaching a lower engaged member 33 to be described later.
- the central shaft body 35 (Fig. 9) is made of a metal material such as steel, is formed in a columnar shape along the vertical direction, and has sufficient thickness and sufficient rigidity.
- the center shaft body 35 is inserted through a center shaft hole 47 (FIG. 10).
- the rotation lock shaft 36 (FIG. 9) is made of a metal material such as steel, and has a columnar connecting portion 36A extending in the front-rear direction and extending downward from the front and rear ends of the connecting portion 36A. It has a columnar lock portion 36B that is vertically installed toward the end.
- the rotation lock shaft 36 has a shape similar to a "clamp" used in fields such as construction.
- the rotation lock shaft body 36 has two lock portions 36B inserted into two rotation lock shaft holes 48 (FIG. 9), respectively.
- the upper engaged body 32 ( FIG. 9 ) is configured in an annular shape and is attached to the seat body 31 so as to be positioned outside the seat body middle portion 42 .
- the annular cover 34 is formed in an annular shape as a whole and is positioned above the upper engaged body 32 .
- the annular cover 34 is not fixed to the seat body 31, but is supported by the annular cover 34 so as to be rotatable about the seat central axis X30. Further, the annular cover 34 is provided with two notch portions 34A for avoiding interference with an upper engaging claw 52, which will be described later.
- FIG. 11 is a schematic perspective view showing the lower engaged body 33.
- FIG. FIG. 12 is a schematic cross-sectional view showing a state in which the lower engaged body 33 is cut along a cutting plane passing through the seat central axis X30 and extending in the front-rear direction.
- the lower engaged body 33 is configured in a disc shape as a whole centering on the seat central axis X30, and is attached to the seat body bottom portion 44 of the seat body 31 (FIG. 9).
- the lower engaged body 33 is formed by integrally molding a hard resin material such as polypropylene, and has a structure in which a plurality of plate-like members are appropriately bent into a predetermined shape and combined with each other. ing.
- the lower engaged body 33 is configured around a vertically thin disk-shaped central disk portion 33A.
- a center shaft hole 33H1 is formed in the center of the central disk portion 33A, and rotation lock shaft holes 33H2 are formed on the right front side and the right rear side of the center shaft hole 33H1.
- a cylindrical inner cylindrical portion 33B is erected upward from the outer edge of the central disk portion 33A.
- an outer annular portion 33C extending outward is provided in an annular shape (that is, in the shape of a disc with a large-diameter round hole formed in the central portion).
- the outer annular portion 33C has an upper surface that is inclined such that the outer peripheral side is positioned higher than the inner peripheral side.
- a cylindrical outer cylindrical portion 33D is erected downward from the outer edge of the outer annular portion 33C. The lower end of the outer cylindrical portion 33D as the engaged portion is positioned at approximately the same height as the central disk portion 33A.
- an intermediate cylindrical portion 33E is erected downward slightly outside the middle of the inner cylindrical portion 33B and the outer annular portion 33C.
- the lower end of the intermediate cylindrical portion 33E is located below the central disk portion 33A.
- a reinforcing member having a predetermined shape is appropriately provided at a portion below the central disk portion 33A and the outer annular portion 33C and inside the intermediate cylindrical portion 33E.
- the outer annular portion 33C is provided with an engagement maintaining portion 33F protruding rearward in the vicinity of the lower end on the rear side of the outer peripheral surface.
- the engagement maintaining portion 33F as a portion to be regulated is formed in a rectangular parallelepiped shape that is long in the left-right direction, short in the front-rear direction, and even shorter in the vertical direction.
- the vicinity of the left end and the vicinity of the right end on the rear side of the engagement maintaining portion 33F are scraped off so as to draw a part of an arc when viewed from above or below, and are in a state in which a so-called rounding process has been performed.
- a holding portion 50 ( FIG. 9 ) is arranged on the rear lower side of the seat portion 30 .
- the holding portion 50 includes a holding body portion 51, two upper engaging claws 52, one lower engaging claw 53, and the like.
- the holding main body 51 is configured in a columnar shape extending in the left-right direction as a whole, and has a shape close to a parallelogram when viewed in the left-right direction.
- the holding main body portion 51 is made of a resin material having sufficient strength.
- the two upper engaging claws 52 protrude upward from near the left and right ends of the holding body portion 51 .
- Each upper engaging claw 52 is made of a metal material such as steel, and has a shape such that the upper end side of a vertically cylindrical member is curved forward in a semicircular shape. It has a shape that looks like a "J" inverted upside down. This upper engaging claw 52 has sufficient rigidity by having sufficient thickness. Below, the tip portion of the upper engaging claw 52 is referred to as an upper engaging end portion 52A.
- the lower engaging claw 53 is made of a metal material such as steel. It has a curved shape.
- the tip portion of the lower engaging claw 53 is referred to as a lower engaging end portion 53A.
- FIG. 13 is a schematic perspective view showing how the upper engaged body 32 and the lower engaged body 33 of the seat portion 30 are engaged with the upper engaging claw 52 and the lower engaging claw 53 of the holding portion 50.
- FIG. 14 is a schematic perspective view showing how the lower engaged body 33 of the seat portion 30 and the lower engaging claw 53 of the holding portion 50 are engaged.
- the upper engaging claw 52 engages the upper engaging end portion 52A with the engaging wall 32A of the upper engaged body 32 .
- the lower engaging claw 53 engages the lower engaging end portion 53A with the outer cylindrical portion 33D of the lower engaged body 33. As shown in FIG.
- the engaging wall 32A of the upper engaged body 32 is formed in a cylindrical shape around the seat central axis X30 as described above.
- the outer cylindrical portion 33D of the lower engaged body 33 is also formed in a cylindrical shape around the seat central axis X30. Therefore, even when the seat portion 30 rotates around the seat center axis X30 as described later, the holding portion 50 engages the upper engaging end portion 52A with the engaging wall 32A and also rotates the lower engaging end portion. The state in which 53A is engaged with the outer cylindrical portion 33D can be maintained.
- the lower engaged body 33 is provided with an engagement maintaining portion 33F on the rear side. Therefore, when the lower engaging end portion 53A of the holding portion 50 is engaged with the outer cylindrical portion 33D on the rear side of the lower engaged body 33, the lower engaging end portion 53A is positioned against the outer cylindrical portion 33D. It is possible to prevent downward displacement (that is, disengagement of the engaged state) and maintain the engaged state.
- FIG. 15 is a schematic perspective view showing the inside of the seat main body lower portion 43 of the seat portion 30, the seat adjustment mechanism portion 60, and the like.
- a square prism-shaped sliding guide 37 is vertically provided on the left side of the center shaft hole 47 (FIG. 10).
- a square prism-shaped slide guide 38 is erected along the vertical direction.
- a holding member 61 is attached to the sliding guide 37 so as to be vertically slidable.
- the holding member 61 integrates a frame-shaped portion that surrounds the slide guide 37, a portion that holds the vicinity of the upper end of the central shaft body 35 (FIG. 9), and a portion that holds other parts described later. It is configured as Further, the holding member 61 is biased downward by a spring 63 .
- the central shaft body 35 is inserted through the central shaft hole 47 (FIG. 10) of the seat body bottom portion 44 and the central shaft hole 33H1 (FIG. 11, etc.) of the lower engaged body 33, and its upper portion is held by the holding member 61. ing. Therefore, the holding member 61 moves vertically along the slide guide 37 to change the length (that is, the amount of protrusion) of the central shaft 35 protruding downward from the lower surface of the lower engaged member 33. can be made
- a holding member 62 is attached to the sliding guide 38 so as to be vertically slidable.
- the holding member 62 has a structure similar to that of the holding member 61, and includes a frame-shaped portion that revolves around the slide guide 38, a portion that holds the connecting portion 36A of the rotation lock shaft 36 (FIG. 9), and a portion for holding other parts, which will be described later, are integrated. Further, the holding member 62 is biased downward by a spring 64 .
- the lock portion 36B of the rotation lock shaft 36 is inserted through the rotation lock shaft hole 48 (FIG. 10) of the seat body bottom portion 44 and the rotation lock shaft hole 33H2 (FIG. 11, etc.) of the lower engaged body 33, is held by the holding member 62 . Therefore, the holding member 62 moves in the vertical direction along the slide guide 38 to adjust the length (that is, the amount of protrusion) of the rotation lock shaft 36 that protrudes downward from the lower surface of the lower engaged body 33 . can be changed.
- an operation lever portion 70 is provided on the front portion of the inner surface of the upper portion 41 of the seat body.
- the operating lever section 70 has an operating base 71, a reclining operating lever 73, a rotating operating lever 74, and the like.
- the operation table 71 is formed in the shape of a plate that is thin in the vertical direction as a whole.
- a stopper portion 71A projecting upward is formed at the front end portion of the upper surface.
- a partition portion 71B is formed.
- the upper surface of the operation table 71 forms an inclined surface along an oblique direction connecting the front upper side and the rear lower side.
- the reclining control lever 73 is formed in the shape of a rectangular parallelepiped that is long in the front-rear direction and short in the vertical direction. It is about 1/2. Further, the reclining operation lever 73 has a front half portion on the upper surface sufficiently higher than the rear half portion, so that a fingertip or the like can be easily hooked on the front half portion.
- the reclining operation lever 73 is located on the upper left side of the operation table 71 and is supported by the operation table 71 so that it can slide in the front-rear direction within a range that does not protrude from the operation table 71 .
- the position on the rear side (the side closer to the seat center axis X30) on the operation platform 71 is hereinafter referred to as the fixed position
- the position on the front side (the side farther from the seat center axis X30) is referred to as the change position.
- a rod connection portion 73A projecting downward from the surroundings is provided at the left rear end on the lower side of the reclining operation lever 73.
- the rod connecting portion 73A is formed in the shape of a relatively small rectangular parallelepiped, to which the front end of the operating rod 65 is connected.
- the operating rod 65 is an elongated rod-shaped member made of a metal material such as steel, and has sufficient rigidity not to be easily deformed. ing.
- the rotation control lever 74 is generally symmetrical with the reclining control lever 73 .
- the rotary control lever 74 is positioned on the upper right side of the operation table 71 and is supported by the operation table 71 so as to be slidable in the front-rear direction within a range that does not protrude from the operation table 71 .
- a rod connecting portion 74A projecting downward from the surroundings is provided at the lower right rear end of the rotation control lever 74.
- the rod connection portion 74A is formed in the shape of a relatively small rectangular parallelepiped like the rod connection portion 73A, and the front end of the operating rod 66 is connected thereto.
- the operating rod 66 is an elongated rod-shaped member made of a metal material such as steel, and has sufficient rigidity not to be easily deformed. 15).
- the operation lever portion 70 is provided with an operation restricting body 75 .
- the operation restricting body 75 is formed in a rectangular parallelepiped shape that is long in the left-right direction, short in the front-rear direction, and thin in the vertical direction. It is mounted so that it can rotate on a plane.
- a left contact surface 75L is formed on the left side surface of the operation restricting body 75.
- the left contact surface 75L is an inclined surface that advances to the right as it advances in the rearward direction.
- the left contact surface 75L is located on the front side of the rod connecting portion 73A in the steady state.
- a right contact surface 75R which is an inclined surface symmetrical to the left contact surface 75L, is formed.
- the right contact surface 75R is located on the front side of the rod connecting portion 74A in a steady state.
- the seat adjusting mechanism 60 urges the holding member 61 downward by the action of the spring 63 to move the seat main body bottom 44 or its portion in the non-operating state in which each operating lever is not operated. Bring it into close proximity.
- the seat adjustment mechanism 60 positions the rear end of the operation rod 65 relatively downward, positions the front end obliquely downward rearward, and positions the reclining operation lever 73 at the fixed position on the rear side (FIG. 16). ).
- the seat adjusting mechanism 60 moves the lower portion of the central shaft 35 held by the holding member 61 from the lower surface of the lower engaged member 33. protrude downward.
- this state is called a protruding state.
- the central shaft body 35 is inserted through one of the shaft holes 22A, 22B, or 22C provided in the cradle lower portion 12 (FIG. 5, etc.) of the cradle portion 10 (details will be described later). .
- the seat adjustment mechanism 60 urges the holding member 62 downward by the action of the spring 64 to abut against the seat main body bottom 44 or the vicinity thereof in a steady state in which the seat adjustment mechanism 60 is not operated.
- the seat adjustment mechanism 60 positions the rear end of the operation rod 66 relatively lower and the front end thereof obliquely downward to the rear, and moves the rotary operation lever 74 to a fixed position on the rear side of the operation table 71 . (Fig. 16).
- the seat adjustment mechanism section 60 moves the lower portion of the rotation lock shaft 36 held by the holding member 62 (that is, part of the lock portion 36B). is projected downward from the lower surface of the lower engaged body 33 .
- the rotation lock shaft 36 is inserted into a shaft groove 23A or 23B provided in the cradle lower portion 12 (FIG. 5, etc.) of the cradle portion 10 (details will be described later).
- the seat adjustment mechanism 60 In the non-operating state (FIG. 16) of the seat adjustment mechanism 60, for example, when a force is applied to the reclining operation lever 73 in an obliquely upward forward direction, this force is transmitted to the holding member 61 via the operating rod 65. and exerts an upward force on the holding member 61 .
- the seat adjustment mechanism 60 causes the holding member 61 to slide along the slide guide 37 while compressing the spring 63 , and lifts the central shaft body 35 upward integrally with the holding member 61 .
- most or all of the center shaft body 35 is accommodated in the seat body 31, as shown in a schematic side view of FIG. 19B. This is hereinafter referred to as the "contained state".
- the operation lever portion 70 As shown in FIG. 17, the reclining operation lever 73 on the operation table 71 moves to the forward change position, and the rod connection portion 73A moves forward together with the reclining operation lever 73. Moving. As a result, the operation restricting body 75 receives force from the rod connecting portion 73A, and rotates about 30 degrees counterclockwise in the figure from the steady state shown in FIG.
- the operation restricting body 75 positions the left side portion on the front side of the fixing pin 76 and brings the left contact surface 75L into contact with the right side surface of the rod connection portion 73A. Further, the operation restricting body 75 positions the right side portion behind the fixing pin 76 and brings the right contact surface 75R close to or in contact with the front side of the rod connecting portion 74A. Therefore, in the operation lever portion 70, the forward movement of the rod connection portion 74A is restricted by the operation restricting body 75, and the rotation operation lever 74 cannot be displaced from the fixed position.
- the seat adjusting mechanism 60 cannot move downward because, for example, the front end of the center shaft 35 comes into contact with the lower support surface 21 of the lower support 12 (FIG. 5, etc.). State may be maintained.
- the operating lever section 70 continues to position the reclining operating lever 73 at the change position, and accordingly continues to position the rotating operating lever 74 at the fixed position.
- each section returns to the normal state (FIG. 16), and the reclining operation lever 73 is fixed on the rear side. Return to position.
- the seat adjustment mechanism 60 when the seat adjustment mechanism 60 is in this steady state, for example, when a force is applied to the rotation operation lever 74 in the front obliquely upward direction, this force is transmitted to the holding member 62 via the operation rod 66, thereby An upward force is applied to the holding member 62 .
- the seat adjustment mechanism 60 causes the holding member 62 to slide along the slide guide 38 while compressing the spring 64 , and lifts the rotation lock shaft 36 upward together with the holding member 62 .
- the rotation lock shaft body 36 is in an accommodated state in which most or all of the lock portion 36B is accommodated in the seat body 31, as shown in a schematic side view of FIG. 20B.
- the right portion of the operation restricting body 75 is positioned on the front side of the fixing pin 76, and the right contact surface 75R is brought into contact with the left side surface of the rod connection portion 74A. Further, the operation restricting body 75 positions the left side portion on the rear side of the fixing pin 76, and brings the left contact surface 75L close to or in contact with the front side of the rod connecting portion 73A. Therefore, in the operating lever portion 70, the forward movement of the rod connecting portion 73A is restricted by the operation restricting body 75, and the reclining operating lever 73 cannot be displaced from the fixed position.
- the tip of the lock portion 36B of the rotation lock shaft 36 is pushed downward due to, for example, contact with the lower pedestal support surface 21 of the lower pedestal 12 (FIG. 5, etc.). It may not be able to move and may remain contained.
- the operating lever portion 70 continues to position the rotating operating lever 74 at the change position, and accordingly keeps the reclining operating lever 73 at the fixed position.
- each portion returns to the normal state (FIG. 16), and the rotation operation lever 74 returns to its posterior fixed position.
- FIG. 21 is a schematic cross-sectional view of the child seat 1 as viewed from the right.
- 22 is a schematic cross-sectional view of the child seat 1 as viewed from the front.
- the seat adjustment mechanism 60, the operation lever 70, etc. are incorporated into the seat body 31 of the seat portion 30, and the annular cover 34 is inserted around the seat body central portion 42 to form an upper engaged body. 32 is attached. Further, the child seat 1 is inserted into the seat body bottom portion 44 of the seat body 31 in a state in which the seat body lower portion 43 of the seat portion 30 is inserted into the base hole 14 formed in the cradle upper portion 11 of the cradle portion 10 . An engaging body 33 is attached, and a lower cradle portion 12 is attached to the upper cradle portion 11 .
- the lower seat body portion 43 can be prevented from slipping out of the base hole 14, and the seat body lower portion 43 can be displaced and rotated in the front-rear direction in the base hole 14. . That is, in the child seat 1 , the seat portion 30 can be displaced in the front-rear direction and rotated with respect to the cradle portion 10 .
- the pedestal upper support surface 13 of the pedestal upper portion 11 and the pedestal lower support surface 21 of the pedestal lower portion 12 are both formed into curved surfaces that are convex downward. Therefore, in the child seat 1, by displacing the seat portion 30 in the longitudinal direction with respect to the cradle portion 10, the position and inclination angle of the seat portion 30 in the anteroposterior direction with respect to the cradle portion 10 are changed, that is, can be reclined.
- the reclining position and angle can be stabilized in three ways ( fixed).
- a parent or the like can operate the central shaft 35 via the seat adjustment mechanism 60 by operating the reclining operation lever 73 of the operation lever portion 70 .
- the child seat 1 can be switched between a projecting state in which the lower engaged member 33 projects downward and a retracted state in which the lower engaged member 33 is stored in the seat body 31 by operating the reclining operation lever 73 .
- the reclining position and angle can be adjusted (switched) in three steps by operating the reclining operation lever 73 and moving the seat portion 30 in the front-rear direction.
- the rotation direction can be stabilized (fixed) by inserting the rotation lock shaft body 36 of the seat portion 30 into either the shaft groove 23A or 23B provided in the cradle portion 10.
- the rotation lock shaft 36 can be operated via the seat adjustment mechanism 60 by the parent or the like operating the rotation operation lever 74 of the operation lever portion 70, as described above.
- the child seat 1 can be switched between a projecting state in which the lower engaged member 33 projects downward and a stored state in which the lower engaged member 33 is stored in the seat body 31 by operating the rotation operation lever 74 .
- the orientation of the seat portion 30 is adjusted in two stages as shown in FIGS. switch) is possible.
- FIG. 23A schematically shows the shaft holes 22 (22A, 22B and 22C) and the shaft grooves 23 (23A and 23B) provided in the pedestal lower support surface 21 of the pedestal portion 10, as well as the central shaft body 35 and the rotating 3 is a plan view schematically showing a lock shaft 36;
- FIG. 23A the state in which the central shaft body 35 and the rotation lock shaft body 36 are inserted into either the shaft hole 22 or the shaft groove 23 is indicated by diagonal lines, and the state in which they are removed from the shaft hole 22 or the shaft groove 23 are shown. is represented in white.
- 24A, 25A, 26A, 27A, 28A and 29A are the same.
- FIG. 23B is a schematic cross-sectional view showing the A1-A2 cross section in FIG. 23A viewed from the right side.
- 24B, 25B, 26B, 27B, 28B and 29B are the same.
- FIG. 23C is a schematic cross-sectional view showing the B1-B2 cross section in FIG. 23A as seen from the right side.
- FIG. 29C is a schematic cross-sectional view of the C1-C2 cross section in FIG. 29A viewed from the right side.
- the child seat 1 is in a steady state in which the operation lever portion 70 is not operated, and each operation lever is in the fixed position on the rear side, as shown in FIG.
- the central shaft body 35 protrudes and is inserted into the shaft hole 22B on the pedestal lower support surface 21, and the rotation lock shaft body 36 also protrudes. and is inserted into the shaft groove 23B.
- the reclining control lever 73 of the child seat 1 is operated to transition to the change position, while the rotation control lever 74 remains in the fixed position.
- the central shaft body 35 is pulled out of the shaft hole 22B and is in the accommodated state, while the rotation lock shaft body 36 is in the projecting state. , and continue to be inserted into the shaft groove 23B.
- the seat portion 30 of the child seat 1 is moved forward with respect to the cradle portion 10 manually by the parent or the like.
- the center shaft 35 moves while sliding its lower end on the support surface 21, so that most of it is accommodated within the seat body 31. maintain containment.
- the rotation lock shaft body 36 continues to move forward within the shaft groove 23B in order to maintain the projecting state. Therefore, the operating lever portion 70 maintains the state shown in FIG.
- the child seat 1 is in a steady state in which the operation lever portion 70 is not operated, and each operation lever is in the fixed position on the rear side, as shown in FIG.
- the center shaft body 35 protrudes from the pedestal lower support surface 21 and is inserted into the shaft hole 22B, and the rotation lock shaft body 36 also protrudes. is inserted into the shaft groove 23B.
- the child seat 1 moves to the change position by operating the rotation control lever 74, while leaving the reclining control lever 73 in the fixed position.
- the rotation lock shaft body 36 is pulled out of the shaft groove 23B on the pedestal lower support surface 21 to be in the housed state, while the central shaft body 35 is in the projected state. , and continue to be inserted into the shaft hole 22B.
- the seat portion 30 of the child seat 1 is rotated with respect to the cradle portion 10 manually by the parent or the like.
- the seat portion 30 is rotated clockwise.
- the rotation lock shaft 36 moves while its lower end slides against the pedestal lower support surface 21, so that most of it is inside the seat body 31. Maintain containment status.
- the central shaft body 35 continues to maintain the projecting state, it becomes the center of rotation of the seat portion 30 while being inserted into the shaft hole 22B. Therefore, the operating lever portion 70 maintains the state shown in FIG.
- the center shaft 35, the rotation lock shaft 36, the seat adjustment mechanism 60, and the operation lever 70 allow the seat portion 30 to rotate with respect to the cradle portion 10 based on the operation of the parent or the like. You can switch between allowing and prohibiting. Therefore, hereinafter, the central shaft body 35, the rotation lock shaft body 36, the seat adjustment mechanism portion 60, and the operation lever portion 70 are collectively referred to as a rotation permission prohibiting portion.
- the rotation lock shaft 36 is inserted into the shaft groove 23 when the seat portion 30 faces forward (FIGS. 1 and 2) or faces backward (FIG. 3). Therefore, it is in a stable state with rotation prohibited. Therefore, hereinafter, the forward direction and the rearward direction are also referred to as stable directions.
- FIG. 30 is a schematic diagram of the lower cradle portion 12 and the lower engaged member 33 when a part of the cradle lower portion 12 is cut with the central shaft body 35 inserted into the shaft hole 22A. shows a perspective view.
- FIG. 31 shows a schematic cross-sectional view when a part of the lower part of the cradle 12 and the lower engaged body 33 are cut with the central shaft body 35 inserted into the shaft hole 22A. .
- FIG. 32 is a schematic plan view showing the positional relationship among the shaft holes 22 and the holding protrusions 25 of the lower part of the cradle 12, the intermediate cylindrical portion 33E of the lower engaged body 33, and the central shaft 35.
- the intermediate cylindrical portion 33E in the case where the central shaft body 35 is inserted into the shaft hole 22A is represented by a solid line, and a virtual straight line passing through the center of the shaft hole 22A along the horizontal direction is the virtual center. It is shown as line X22A.
- the intermediate cylindrical portion 33E in the case where the central shaft body 35 is inserted into the shaft hole 22B is represented by a dashed line, and a virtual straight line passing through the center of the shaft hole 22B along the left-right direction is an imaginary line. It is shown as centerline X22B.
- the intermediate cylindrical portion 33E in the case where the central shaft body 35 is inserted into the shaft hole 22C is indicated by a dashed line, and a virtual straight line passing through the center of the shaft hole 22C along the horizontal direction is the virtual center. It is shown as line X22C.
- the center shaft 35 when the center shaft 35 is inserted into the shaft hole 22A, the center shaft 35 is slightly forward and slightly rearward of the imaginary center line X22 in the vicinity of the left side of the intermediate cylindrical portion 33E.
- Retaining projections 25L1 and 25L2 are located respectively.
- the holding protrusions 25R1 and 25R2 are positioned slightly forward and slightly rearward of the imaginary center line X22 in the vicinity of the right side of the intermediate cylindrical portion 33E.
- the upper end of the holding projection 25L1 etc. is positioned below the lower end of the outer cylindrical portion 33D of the lower engaged body 33, and the holding projection 25L1 etc. and the outer cylindrical portion 33D.
- the lower engaged body 33 (FIG. 11, etc.) is provided with the engagement maintaining portion 33F protruding rearward in the vicinity of the rear lower end of the intermediate cylindrical portion 33E.
- the part through which the engagement maintaining part 33F passes causes the outer side of the intermediate cylindrical part 33E to rotate.
- this ring is called a circular orbit L33F
- the circle representing the outer circumference of the circular orbit L33F is called an outer circumference circle C33F.
- the position of the engagement maintaining portion 33F will be described below with reference to the central shaft body 35 .
- each part of the holding projections 25L1 and 25L2 and 25R1 and 25R2 is located on the circumferential track L33F. This means that when the lower engaged body 33 rotates, the engagement maintaining portion 33F comes into contact with the holding protrusions 25L1 and 25L2 and 25R1 and 25R2, respectively. This also means that when the lower engaged body 33 rotates, the engagement maintaining portion 33F does not come into contact with the holding protrusions 25L3-25L5 and 25R3-25R5.
- FIG. 33, 34 and 35 are schematic plan views corresponding to a part of FIG. 32.
- FIG. 33, 34 and 35 are schematic plan views corresponding to a part of FIG. 32.
- the engagement maintaining portion 33F is positioned on the rear side as shown in FIG.
- the seat portion 30 is rotated counterclockwise by about 80 degrees from this forward facing state, as shown in FIG. Abut on the rear side.
- the lower engaged body 33 has relatively high strength in each portion including the engagement maintaining portion 33F, and is not easily deformed.
- the holding protrusion 25 is elastically deformable so that the upper portion bends in the left-right direction with respect to the lower portion.
- the seat portion 30 continues to rotate counterclockwise, and the entire engagement maintaining portion 33F reaches below the contact portion 25C of the holding projection 25L2. Then, in the child seat 1, no force is applied from the engagement maintaining portion 33F to the holding projection 25L2, and the holding projection 25L2 returns to its original shape.
- the engagement maintaining portion 33F is sandwiched between the holding projections 25L1 and 25L2, and the seat portion 30 is rotated counterclockwise by approximately 90 degrees from the forward facing state (FIG. 2, etc.). It is in a state of facing rightward (hereinafter referred to as a sideways state).
- a sideways state a state of facing rightward
- the holding protrusions 25L2 and 25L1 are in contact with or close to the engagement maintaining portion 33F. Therefore, in the child seat 1, when the seat portion 30 is rotated in any direction from the state shown in FIG. A sufficient amount of force must be applied.
- this sideways state can be maintained until a sufficient amount of external force is applied. Further, when a sufficient force is applied to the seat portion 30 in this sideways state, the child seat 1 starts to rotate. 1 and 2) or backward (FIG. 3), the rotation lock shaft 36 is inserted into the shaft groove 23A or 23B, and the rotation operation is completed.
- the child seat 1 even when the seat portion 30 is rotated about 90 degrees clockwise from the rearward facing state (FIG. 3) to the sideward facing state facing right, the engagement maintaining portion 33F is maintained as shown in FIG. is sandwiched between the holding projection 25L1 and the holding projection 25L2. Therefore, the child seat 1 can maintain this sideways state until a sufficient external force is applied.
- the child seat 1 when the seat portion 30 is rotated about 90 degrees clockwise from the forward-facing state (FIGS. 1 and 2) to the sideways state facing leftward, the state shown in FIG. state. At this time, the engagement maintaining portion 33F is sandwiched between the holding projection 25R1 and the holding projection 25R2. Also, in the child seat 1, when the seat portion 30 is rotated counterclockwise by approximately 90 degrees from the rearward facing state (FIG. 3) to the sideways state facing left, the same state occurs. That is, the engagement maintaining portion 33F is sandwiched between the holding projection 25R1 and the holding projection 25R2. Therefore, the child seat 1 can maintain this sideways state until a sufficient external force is applied.
- the engagement maintaining portion 33F is held between two holding protrusions 25, and the seat portion 30 is oriented when the seat portion 30 cannot easily rotate.
- the pointing direction ie the left direction or the right direction, is also referred to as the holding direction.
- the left side of the intermediate cylindrical portion 33E is slightly forward and slightly rearward of the imaginary center line X22C.
- holding projections 25L4 and 25L5 are located respectively.
- the holding protrusions 25R4 and 25R5 are positioned slightly forward and slightly rearward of the imaginary center line X22C in the vicinity of the right side of the intermediate cylindrical portion 33E.
- the child seat 1 even when the central shaft body 35 is inserted into the shaft hole 22B or 22C, it is in the same state as when it is inserted into the shaft hole 22A. That is, when the seat portion 30 is turned sideways to the right or left, the child seat 1 can maintain this sideways state until a sufficient external force is applied.
- the seat portion 30 changes its posture while being displaced in the front-rear direction with respect to the cradle portion 10 by reclining.
- the range through which the intermediate cylindrical portion 33E passes is an oval intermediate cylindrical portion passing range AR33E (hereinafter also referred to as a cylindrical passing range), as shown in FIG. Become.
- each holding protrusion 25 is positioned outside the intermediate cylindrical portion passing range AR33E. This means that the intermediate cylindrical portion 33 ⁇ /b>E does not come into contact with the holding protrusion 25 when the seat portion 30 is displaced in the front-rear direction with respect to the cradle portion 10 .
- the child seat 1 is configured such that the seat portion 30 is rotatable with respect to the cradle portion 10 .
- the child seat 1 has an engagement maintaining portion 33F projecting outward from an intermediate cylindrical portion 33E of the lower engaged body 33 of the seat portion 30, and a plurality of holding projections 25 provided on the pedestal portion 10. As shown in FIG.
- the child seat 1 can rotate the seat portion 30 clockwise or counterclockwise with respect to the cradle portion 10 from a forward facing state or a rearward facing state when the operation lever portion 70 is operated by a parent or the like. Eventually, when the child seat 1 rotates about 90 degrees from the forward facing state or the rearward facing state, the engagement maintaining portion 33F is positioned between the two holding projections 25, and the seat portion 30 is turned sideways (Fig. 33). , FIGS. 34 and 35).
- the child seat 1 has a pedestal portion 10 attached to a vehicle seat 100 (FIG. 1) of an automobile.
- the guardian opens the door of the vehicle, stands on the right or left side of the child seat 1 outside the vehicle, or sits in the vehicle next to the vehicle seat 100. It is often in a state of sitting on the seat. In other words, there is a high possibility that the guardian is on the right or left side of the child seat 1 .
- the child seat 1 can maintain this sideways-facing state. Therefore, the guardian does not need to hold the seat part 30, and can use both hands to easily and safely seat or put down the infant with the front part of the seat part 30 facing the child. can be done.
- the engagement maintaining portion 33F temporarily deforms the holding projection 25, causing the seat portion 30 to rotate.
- the direction of the seat portion 30 can be fixed by the rotation lock shaft 36.
- the child seat 1 can turn the seat portion 30 sideways without requiring any special operation by simply interrupting the work of rotating the seat portion 30 when the parent or the like feels resistance during the work of rotating the seat portion 30. state can be maintained.
- the seat portion 30 is simply held by the cradle portion 10 with respect to the parent or the like with the rotation control lever 74 in the changed position. It can be easily recognized that the target can be easily rotated.
- the child seat 1 should be directed to the guardian or the like when the car is to be driven, instead of keeping the seat portion 30 in the sideways state, the seat portion 30 should be rotated forward or backward so that the seat portion 30 is placed on the pedestal portion 10. It can be urged to firmly fix it against.
- Such a configuration takes into consideration the safety of infants when a conventional child seat is attached to the vehicle seat of an automobile, the seat portion 30 is in a forward facing state, and a collision or the like occurs while the automobile is traveling forward. It was set up as Specifically, the child seat 1 is designed so that the seat portion 30 exerts a large forward force on the cradle portion 10 due to the moment of inertia and comes off the cradle portion 10 with the lower engagement end portion 53A. This is avoided in advance by engaging with the outer cylindrical portion 33D.
- the child seat 1 utilizes the engagement maintaining portion 33F also for the purpose of maintaining the seat portion 30 in the sideways state.
- the child seat 1 is positioned at the cradle lower portion 12 of the cradle portion 10 so that it partially overlaps with the circular track L33F (FIG. 32) through which the engagement maintaining portion 33F passes when the seat portion 30 rotates.
- each holding protrusion 25 is provided (FIGS. 6 to 8 and FIGS. 30 to 32).
- the structure of the seat portion 30 side including the engagement maintaining portion 33F is not changed from the conventional one, and is left as it is. In other words, the child seat 1 can be maintained in the sideways position during the rotation of the seat portion 30 by only partially changing the structure of the lower part 12 of the cradle compared to the conventional structure.
- the child seat 1 has four holding protrusions 25 on the left front side, the left rear side, the right front side, and the right rear side of each of the three shaft holes 22 (22A, 22B, and 22C). They are arranged respectively (Fig. 32, etc.). Therefore, the child seat 1 can maintain the sideways state while the seat portion 30 is being rotated, regardless of which shaft hole 22 the central shaft body 35 of the seat portion 30 is inserted in by reclining. can.
- the interval between the shaft holes 22A and 22B is relatively short due to the reclining angle. Therefore, in the child seat 1, the positions of the holding projections 25 to be arranged on the left rear side and right rear side of the shaft hole 22A overlap with the positions of the holding projections 25 to be arranged on the left front side and right front side of the shaft hole 22B. However, it was difficult to provide each at an appropriate position.
- the holding protrusions 25L2 and 25R2 are arranged on the left rear side and right rear side of the shaft hole 22A, and are arranged on the left front side and right front side of the shaft hole 22B.
- 25 has a substantially symmetrical shape with respect to the front-rear direction (FIGS. 6 to 8 and 32).
- all of the holding projections 25 can be arranged at required locations within a limited range in the cradle portion 10, and even if the central shaft body 35 is inserted into any shaft hole 22, , can maintain landscape orientation.
- each holding projection 25 is arranged outside the intermediate cylindrical portion passing range AR33E in which the intermediate cylindrical portion 33E is displaced when the seat portion 30 is displaced in the front-rear direction by reclining (Fig. 32). Therefore, in the child seat 1, when the seat portion 30 is displaced in the front-rear direction with respect to the cradle portion 10, the intermediate cylindrical portion 33E can be prevented from coming into contact with the holding protrusions 25, and the seat portion 30 can be reclined smoothly. can be made
- the child seat 1 is configured such that the seat portion 30 is rotatable with respect to the cradle portion 10, and the outer annular portion 33C of the lower engaged body 33 of the seat portion 30 is rotated outwardly.
- a plurality of holding protrusions 25 are provided so that the engagement maintaining portion 33F protrudes in the direction and partially overlaps the circular track L33F in the cradle portion 10.
- the child seat 1 positions the engagement maintaining portion 33F between the two holding projections 25.
- the seat portion 30 can be maintained in a sideways state.
- each holding protrusion 25 may have a different shape.
- the holding protrusions 25L2 and 25R2 are shared in both the state in which the central shaft body 35 of the seat portion 30 is inserted into the shaft hole 22A and the state in which it is inserted into the shaft hole 22B.
- the case of contact with the alignment maintaining portion 33F has been described (FIG. 32, etc.).
- the present invention is not limited to this. Instead, holding protrusions 25 corresponding to respective states may be provided. Further, in this case, each holding projection 25 may have an asymmetrical shape with respect to the front-rear direction.
- the central shaft body 35 of the seat portion 30 is configured to be inserted into any one of the three shaft holes 22 by reclining, and all the shaft holes 22 and corresponding positions
- the case where the holding protrusion 25 is provided in the case has been described (FIGS. 6 and 32, etc.).
- the present invention is not limited to this. Also good.
- the seat portion 30 when the seat portion 30 is in the sideways state, a total of two holding protrusions 25 are arranged on the front side and the rear side of the position where the engagement maintaining portion 33F is positioned. Stated. That is, in the child seat 1, the engagement maintaining portion 33F is sandwiched from the front and rear by the two holding projections 25, so that the seat portion 30 is maintained in the sideways state (FIG. 35, etc.).
- the present invention is not limited to this.
- a book retaining projection 25 may be provided. In this case, the seat portion 30 can be maintained in the sideways state by engaging the holding protrusions 25 with the cutout portions.
- the holding protrusions 25 are provided in the lower part 12 of the cradle part 10 located on the lower side (FIG. 6, etc.).
- the present invention is not limited to this, and the holding protrusions 25 may be provided in various other portions, such as providing the holding protrusions 25 on the back side of the pedestal upper support surface 13 in the pedestal upper portion 11 .
- a single holding projection 25 or a combination of a plurality of holding projections 25 and a projection pedestal portion 24 may be configured as an independent component, and the component may be attached to the lower cradle 12, the upper cradle 11, or the like. good.
- the holding projection 25 can be arranged at a position where the engagement maintaining portion 33F provided on the lower engaged body 33 of the seat portion 30 abuts during rotation.
- the holding projection 25 is provided at the position of the cradle lower portion 12 of the cradle portion 10 that abuts against the engagement maintaining portion 33F when the seat portion 30 rotates. That is, the child seat 1 maintains the sideways state by restricting the rotation of the seat portion 30 due to the interference between the holding projection 25 and the engagement maintaining portion 33F (Fig. 32).
- the present invention is not limited to this. Also good. That is, according to the present invention, the holding projections 25 may be provided on the side of the cradle portion 10 so as to come into contact with various portions provided on the seat portion 30 when the seat portion 30 rotates. Alternatively, a projection or the like may be newly provided on the seat portion 30 in place of the engagement maintaining portion 33F, and then the holding projection 25 may be provided at a portion that abuts thereon.
- the engagement maintaining portion 33F is sandwiched between the holding projections 25, and the sideways state is maintained. is maintained (FIG. 32).
- the present invention is not limited to this, and when the seat portion 30 is oriented in various directions, the engagement maintaining portion 33F is sandwiched between the holding projections 25 to maintain that direction (state).
- the seat portion 30 is maintained in a state rotated by about 75 degrees or rotated by about 60 degrees from the forward facing state or the rearward facing state.
- the direction (state) of the seat portion 30 may be maintained at two or more points when the seat portion 30 is half-rotated between the forward-facing state and the rearward-facing state.
- the present invention is not limited to this.
- two or four or more shaft holes 22 may be provided in the pedestal lower support surface 21 so that the reclining of the seat portion 30 can be adjusted in two or four or more stages.
- only one shaft hole 22 may be provided in the pedestal lower support surface 21, and the reclining function may be omitted.
- the present invention is not limited to the above embodiments and other embodiments.
- the scope of the present invention also extends to embodiments obtained by arbitrarily combining part or all of each of the above-described embodiments and other embodiments described above, and to embodiments in which a part is extracted. It is.
- the cradle portion 10 as the cradle portion, the seat portion 30 as the seat portion, the central shaft 35 as the rotation prohibiting portion, the rotation lock shaft 36, and the seat adjustment mechanism The case where the child seat 1 as a child seat is configured by the portion 60, the operating lever portion 70, the engagement maintaining portion 33F as the restricted portion, and the holding projection 25 as the restricting portion has been described.
- the present invention is not limited to this, and the child seat may be constituted by a pedestal portion, a seat body portion, a rotation prohibiting portion, a regulated portion, and a regulating portion.
- the present invention can be used, for example, in a child seat having a mechanism for rotating the seat portion.
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Abstract
Description
図1は、本実施の形態によるチャイルドシート1の全体を示す略線的な斜視図である。図2は、チャイルドシート1を前向き状態とした様子を示す略線的な斜視図である。図3は、チャイルドシート1を後向き状態とした様子を示す略線的な斜視図である。 [1. Child seat configuration]
FIG. 1 is a schematic perspective view showing the
次に、受台部10について説明する。図4は、受台部10の略線的な斜視図であり、図5は、受台部10の略線的な上面図である。受台部10は、車両シート100(図1)の座部上に載置される基部10A、基部10Aの後部から上方に延びると共に車両シート100の背部に対面する起立部10B、並びに該基部10A及び該起立部10Bの間に位置する傾斜部10C等を有している。 [2. Configuration of the cradle part]
Next, the
図9は、シート部30を主要な部分ごとに分解した様子、及び保持部50の構成を示す略線的な斜視図である。シート部30は、大きく分けて、シート本体31、上被係合体32、下被係合体33及び環状カバー34、並びに中心軸体35及び回転ロック軸体36により構成されている。また、シート部30には、受台部10に対する該シート部30の位置や方向等を調整するためのシート調整機構部60や、該シート調整機構部60を操作するための操作レバー部70等も設けられている。 [3. Configuration of seat portion and holding portion]
FIG. 9 is a schematic perspective view showing how the
シート本体31は、主に乳幼児を着座させるための空間を形成する部分であり、例えばポリプロピレンのような硬質の樹脂材料を一体成型することにより形成される。このシート本体31は、大きく分けて上側のシート本体上部41、中ほどのシート本体中部42、下側のシート本体下部43及び底部を形成するシート本体底部44により構成されている。 [3-1. Configuration of seat part]
The seat
ところで、シート部30の後下側には、保持部50(図9)が配置されている。この保持部50は、保持本体部51、2本の上係合爪52及び1本の下係合爪53等により構成されている。 [3-2. Structure of Holding Portion and Engagement with Seat Portion]
By the way, a holding portion 50 ( FIG. 9 ) is arranged on the rear lower side of the
図15は、シート部30におけるシート本体下部43の内部及びシート調整機構部60等を示す略線的な斜視図である。シート本体下部43内におけるシート本体底部44の上面には、中心軸孔47(図10)の左側に、上下方向に沿った四角柱状の摺動ガイド37が立設されている。また、シート本体底部44の上面には、該中心軸孔47及び回転ロック軸孔48の右側に、上下方向に沿った四角柱状の摺動ガイド38が立設されている。 [3-3. Configuration of Seat Adjustment Mechanism and Operation Lever]
FIG. 15 is a schematic perspective view showing the inside of the seat main body
次に、シート部30のリクライニング及び回転について説明する。図21は、チャイルドシート1を右方向から見た略線的な断面図である。また図22は、チャイルドシート1を前方向から見た略線的な断面図である。 [4. Seat Reclining and Rotation]
Next, the reclining and rotation of the
ここでは、チャイルドシート1においてシート部30のリクライニングを調整する様子について、中心軸体35を挿入する軸穴22を、軸穴22Bから軸穴22Aに切り替える場合を例に説明する。 [4-1. Seat reclining]
Here, how to adjust the reclining of the
次に、チャイルドシート1においてシート部30を回転させて方向を調整する様子について、回転ロック軸体36を挿入する軸溝23を、軸溝23Bから軸溝23Aに切り替える場合、すなわち該シート部30を前向き状態(図1及び図2)から後ろ向き状態(図3)に切り替える場合を例に説明する。 [4-2. Rotation of Seat]
Next, regarding how to adjust the direction by rotating the
かかる構成に加えて、チャイルドシート1は、図6、図7及び図8に示したように、受台部10の受台下部12に、複数の保持突起25が設けられている。ここで、図30は、中心軸体35が軸穴22Aに挿入された状態で、受台下部12の一部を切断した場合における、該受台下部12及び下被係合体33の略線的な斜視図を示す。また、図31は、同様に中心軸体35が軸穴22Aに挿入された状態で、受台下部12及び下被係合体33の一部を切断した場合における、略線的な断面図を示す。 [4-3. Maintenance of Rotational Direction by Holding Protrusions]
In addition to this configuration, the
以上の構成において、本実施の形態によるチャイルドシート1は、受台部10に対してシート部30を回転可能に構成した。また、チャイルドシート1は、シート部30の下被係合体33における中間円筒部33Eから外方に向けて係合維持部33Fを突出させると共に、受台部10に複数の保持突起25を設けた。 [5. effects, etc.]
In the above configuration, the
なお上述した実施の形態においては、保持突起25(図8)の下側部分に対して上側部分を左右方向へ撓ませ得るように、すなわち保持突起25自体が変形するように構成する場合について述べた。しかし、本発明はこれに限らず、例えば保持突起25及び突起台座部24の間に弾性変形する接続部材を介在させ、保持突起25自体を変形させないように構成しても良い。 [6. Other embodiments]
In the above-described embodiment, the case is described in which the upper portion of the holding projection 25 (FIG. 8) can be bent in the left-right direction with respect to the lower portion, that is, the holding
Claims (9)
- 受台部と、
前記受台部に対し所定の中心軸を中心とした回転が可能なシート部と、
前記受台部に対し前記シート部の前記回転を許容し、又は当該シート部を所定の安定方向に向けた姿勢で当該回転を禁止する回転許容禁止部と、
前記シート部に設けられ、当該シート部が前記中心軸を中心として回転する場合に円周軌道に沿って変位する被規制部と、
前記受台部に設けられ、前記シート部が前記回転により前記受台部に対し前記安定方向と異なる保持方向を向いた場合に、前記被規制部の前記変位を規制する規制部と
を具えることを特徴とするチャイルドシート。 a cradle portion;
a seat portion rotatable about a predetermined central axis with respect to the cradle portion;
a rotation permission prohibiting portion that permits the rotation of the seat portion with respect to the cradle portion or prohibits the rotation with the seat portion facing in a predetermined stable direction;
a regulated portion provided on the seat portion and displaced along a circumferential track when the seat portion rotates about the central axis;
a regulating portion provided on the cradle portion for regulating the displacement of the regulated portion when the seat portion faces a holding direction different from the stabilizing direction with respect to the cradle portion due to the rotation. A child seat characterized by: - 係合部を有し、前記受台部に対する前記シート部の位置を保持する保持部と、
前記シート部に設けられ、前記保持部の前記係合部と係合する被係合部と
をさらに具え、
前記被規制部は、前記受台部に対し前記シート部が前記安定方向を向いた姿勢であるときに、前記保持部の前記係合部が前記被係合部に係合した状態を維持する
ことを特徴とする請求項1に記載のチャイルドシート。 a holding portion that has an engaging portion and holds the position of the seat portion with respect to the cradle portion;
an engaged portion provided on the seat portion and engaged with the engaging portion of the holding portion;
The regulated portion maintains a state in which the engaging portion of the holding portion is engaged with the engaged portion when the seat portion is oriented in the stable direction with respect to the cradle portion. A child seat according to claim 1, characterized in that: - 前記シート部は、前記中心軸を中心とした円筒部をさらに具え、
前記被規制部は、前記円筒部の外方に突出した部分であり、
前記規制部は、一部分を前記円周軌道上に位置させ、外力により当該一部分が当該円周軌道の外部に変位した状態で当該外力が開放された場合、当該一部分を当該円周軌道上に位置させる
ことを特徴とする請求項1に記載のチャイルドシート。 The seat portion further includes a cylindrical portion centered on the central axis,
The regulated portion is a portion that protrudes outward from the cylindrical portion,
The restricting part positions a part on the circumferential orbit, and positions the part on the circumferential orbit when the external force is released while the part is displaced to the outside of the circumferential orbit by an external force. A child seat according to claim 1, characterized in that - 前記規制部は、前記シート部が前記保持方向を向いた場合に、前記被規制部と当接又は近接する位置に配置されている
ことを特徴とする請求項3に記載のチャイルドシート。 4. The child seat according to claim 3, wherein the regulating portion is arranged at a position abutting or adjacent to the regulated portion when the seat portion is oriented in the holding direction. - 前記規制部は、前記シート部が前記保持方向を向いた場合に、前記一部分が、前記円周軌道上において前記被規制部と隣接する位置に配置されている
ことを特徴とする請求項3に記載のチャイルドシート。 4. The restricting portion is arranged at a position adjacent to the restricted portion on the circumferential track when the seat portion is oriented in the holding direction. Child seat as described. - 前記シート部は、前記中心軸に沿った中心軸体を有し、
前記回転許容禁止部は、曲面状でなり前記シート部を支持する受台支持面を有すると共に、当該受台支持面上に前記中心軸体を支持する軸体支持部を複数有し、
前記規制部は、複数の前記軸体支持部と対応する複数の位置にそれぞれ設けられている
ことを特徴とする請求項1に記載のチャイルドシート。 The seat portion has a central shaft along the central axis,
The rotation permission prohibiting portion has a curved support surface for supporting the seat portion, and has a plurality of shaft support portions for supporting the central shaft on the support surface,
The child seat according to claim 1, wherein the restricting portions are provided at a plurality of positions corresponding to the plurality of shaft support portions. - 前記シート部は、前記中心軸を中心とした円筒部をさらに具え、
前記被規制部は、前記円筒部の外方に突出した部分であり、
前記規制部は、一部分を前記円周軌道上に位置させ、外力により当該一部分が当該円周軌道の外部に変位した状態で当該外力が開放された場合、当該一部分を当該円周軌道上に位置させ、
前記規制部は、複数の前記軸体支持部それぞれと対応する位置であって、且つ前記中心軸体が何れの前記軸体支持部により支持されている場合にも前記円筒部と当接しない位置に、それぞれ設けられている
ことを特徴とする請求項6に記載のチャイルドシート。 The seat portion further includes a cylindrical portion centered on the central axis,
The regulated portion is a portion that protrudes outward from the cylindrical portion,
The restricting part positions a part on the circumferential orbit, and positions the part on the circumferential orbit when the external force is released while the part is displaced to the outside of the circumferential orbit by an external force. let
The restricting portion is located at a position corresponding to each of the plurality of shaft supporting portions, and at a position where the central shaft does not come into contact with the cylindrical portion when the central shaft is supported by any of the shaft supporting portions. 7. A child seat according to claim 6, characterized in that it is provided in each of the . - 前記規制部は、一の前記軸体支持部により前記中心軸体が支持される状態から他の前記軸体支持部により前記中心軸体が支持される状態に切り替わる際に前記円筒部が通過する円筒通過範囲の外に、それぞれ設けられている
ことを特徴とする請求項7に記載のチャイルドシート。 The restricting portion allows the cylindrical portion to pass when the state in which the central shaft is supported by one of the shaft supporting portions is switched to the state in which the central shaft is supported by the other shaft supporting portion. 8. The child seat according to claim 7, wherein each is provided outside the cylindrical passage range. - 前記回転許容禁止部は、前記受台部に対し前記シート部が前記安定方向を向いた姿勢であるときに、当該受台部に対する当該シート部の角度の変更を許容し、当該シート部が当該安定方向以外の方向を向いた姿勢であるときに当該シート部の角度の変更を禁止する
ことを特徴とする請求項6に記載のチャイルドシート。
The rotation permission prohibition section allows a change in the angle of the seat portion with respect to the cradle portion when the seat portion is oriented in the stable direction with respect to the cradle portion, 7. The child seat according to claim 6, wherein changing the angle of the seat portion is prohibited when the child is in a posture facing a direction other than the stable direction.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2022521742A JP7270316B1 (en) | 2021-07-15 | 2021-07-15 | child seat |
PCT/JP2021/026582 WO2023286230A1 (en) | 2021-07-15 | 2021-07-15 | Child car seat |
KR1020247004362A KR20240032958A (en) | 2021-07-15 | 2021-07-15 | car seat |
CN202180102358.3A CN117940314A (en) | 2021-07-15 | 2021-07-15 | Child seat |
TW111116225A TWI799246B (en) | 2021-07-15 | 2022-04-28 | child safety seat |
Applications Claiming Priority (1)
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PCT/JP2021/026582 WO2023286230A1 (en) | 2021-07-15 | 2021-07-15 | Child car seat |
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WO2023286230A1 true WO2023286230A1 (en) | 2023-01-19 |
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PCT/JP2021/026582 WO2023286230A1 (en) | 2021-07-15 | 2021-07-15 | Child car seat |
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JP (1) | JP7270316B1 (en) |
KR (1) | KR20240032958A (en) |
CN (1) | CN117940314A (en) |
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WO (1) | WO2023286230A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015025432A1 (en) * | 2013-08-23 | 2015-02-26 | コンビ株式会社 | Child seat |
JP2015074313A (en) * | 2013-10-08 | 2015-04-20 | アップリカ・チルドレンズプロダクツ合同会社 | Child seat for vehicle seat |
CN211641927U (en) * | 2019-12-11 | 2020-10-09 | 宁波环球娃娃婴童用品股份有限公司 | Seat rotation regulation and locking mechanism |
Family Cites Families (3)
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ES2542741T3 (en) * | 2010-09-14 | 2015-08-11 | Cybex Industrial Ltd. | Child seat |
US10449876B2 (en) * | 2015-12-29 | 2019-10-22 | Jeffrey H. Lonstein | Multi-position chair with tiltable, rotatable and slidable seat shell |
CN110466400B (en) * | 2019-09-20 | 2024-03-22 | 安徽永驰婴童科技股份有限公司 | Child safety seat and chair back pitching angle adjusting mechanism |
-
2021
- 2021-07-15 JP JP2022521742A patent/JP7270316B1/en active Active
- 2021-07-15 WO PCT/JP2021/026582 patent/WO2023286230A1/en active Application Filing
- 2021-07-15 KR KR1020247004362A patent/KR20240032958A/en unknown
- 2021-07-15 CN CN202180102358.3A patent/CN117940314A/en active Pending
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2022
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015025432A1 (en) * | 2013-08-23 | 2015-02-26 | コンビ株式会社 | Child seat |
JP2015074313A (en) * | 2013-10-08 | 2015-04-20 | アップリカ・チルドレンズプロダクツ合同会社 | Child seat for vehicle seat |
CN211641927U (en) * | 2019-12-11 | 2020-10-09 | 宁波环球娃娃婴童用品股份有限公司 | Seat rotation regulation and locking mechanism |
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KR20240032958A (en) | 2024-03-12 |
TW202304746A (en) | 2023-02-01 |
TWI799246B (en) | 2023-04-11 |
JP7270316B1 (en) | 2023-05-10 |
JPWO2023286230A1 (en) | 2023-01-19 |
CN117940314A (en) | 2024-04-26 |
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