JP5441444B2 - Child seat for vehicle - Google Patents

Description

  The present invention relates to a child car seat suitable for placing a child in an automobile.

  As shown in FIG. 11, a conventional child car seat for a child is a child seat for a young person who directly restrains a child with a seat belt provided in the vehicle. The hook 84 is formed at the lower end of the backrest portion 83, and the inner peripheral surface of the hook 84 is engaged with the locking shaft 82 in a state where the backrest portion 83 is in a horizontal state. Japanese Patent Laid-Open No. 06-141911 discloses a child seat in which the seat portion 81 and the backrest portion 83 are connected by rotating the backrest portion 83 about the locking shaft 82 and standing up. .

  However, this conventional vehicle child seat is configured such that the backrest portion 83 is rotatable and separable with respect to the seat portion 81, but the backrest portion 83 is rotatable with respect to the seat portion 81. Because it is used, the backrest 83 pivots forward and pushes the child from behind at the time of a collision in the front of the vehicle, which may adversely affect the child, and the backrest of the vehicle seat When the child seat is used in a state close to vertical, the child seat back portion 83 may fall forward even during normal braking during traveling.

In addition, as described above, since the backrest 83 is not fixed to the seat 81 in this prior art, the method of use is limited to a method in which a child is directly restrained by a seat belt provided on the vehicle. Using a crotch belt extending upward from the upper surface of the seat, a pair of left and right shoulder belts extending forward from the upper part of the child contact surface of the backrest, and a buckle for attaching and detaching the crotch belt and the shoulder belt. I couldn't be restrained.

As a conventional technique that solves the above problems and has a fixing means that allows the backrest portion 92 to change the angle with respect to the seat portion 91, as shown in FIG. 12, a stopper pin 93, the side surface of the seat portion 91, and Japanese Laid-Open Patent Application No. 08-290732 discloses a child seat provided with locking holes 94 into which a plurality of stopper pins 93 provided on the side surface are inserted and engaged.

However, in this conventional technique, the reclining operation of the backrest 91 can be easily performed by using the child's own operation while the child seat is being used. Therefore, the angle of the backrest 91 of the child seat can be adjusted by the child's own operation during use. When the direction is changed to the direction in which the child is restrained, the length of the harness belt 95 for restraining the child is insufficient, and the child is excessively compressed. It was dangerous because it became excessive and the child could not be restrained firmly. In addition, even when the child grows up and it is suitable to use the backrest of the vehicle directly, there is a drawback that the backrest portion 92 cannot be removed from the seat portion 91 and used.

Further, when the conventional technique is improved so that the backrest portion 92 can be removed, it is dangerous for the child to protrude from the side surface of the seat portion toward the seating direction.

As described above, the angle of the backrest portion can be changed with respect to the seating surface, and the child seat for a vehicle having a harness belt that restrains the child on the child seat itself, the backrest portion can be changed by changing the inclination angle of the backrest portion. The distance between the belt insertion hole in the seat and the belt insertion hole in the seat cushion changes, and the position of the crotch belt anchor 80 for attaching the crotch belt moves to change the length of the belt of the child belt restraint structure. A child seat technology capable of restraining a child in an optimum state is known from Japanese Utility Model Laid-Open No. 5-49470.

However, this conventional vehicle child seat has a complicated structure, and when the manufacturing cost is high, the weight of the child seat itself increases when moving, which adversely affects the behavior of the child seat at the time of collision. Since the backrest portion is not structured to be removable, there is a disadvantage that it cannot be used for a large child whose weight should be increased by directly using the backrest of the vehicle.
JP-A-06-141911 Japanese Patent Laid-Open No. 08-290732 Japanese Utility Model Publication No. 05-49470

  The problem to be solved by the present invention is that it has a simple structure, but when a child seat is installed on a vehicle seat, the angle of the backrest with respect to the seat can be arbitrarily fixed and used. The angle of the backrest with respect to the seat is prevented from being changed by the child's own operation, and the angle adjustment is performed with the backrest removed from the seat and the angle adjusted with the backrest removed from the seat The components of the mechanism do not harm the child, and the components of the angle adjustment mechanism remain connected to the seat or the removed seat surface when the backrest is removed from the seat. The problem is to prevent the loss of

The present invention has a seat for a child to sit on, a backrest for receiving the back of the child, and a connecting means for connecting the seat and the backrest. It is detachable, and the backrest portion is configured to be fixed at a plurality of angles with respect to the seat portion, and further includes means for preventing an operation of changing the angle of the backrest portion by a seated child.

Further, the coupling means includes a coupling portion provided on the rear upper surface of the seat portion, and a coupling portion provided at the lower end of the backrest portion, the first coupling mechanism in which the backrest portion is detachably and pivotably coupled. A first connection portion provided on the side wall of the seat portion, a second connection portion having a plurality of connection positions provided on the side wall of the backrest portion, and one of which is rotatable with respect to the first connection portion. And a second coupling mechanism having a coupling member that is detachably coupled to the second connection portion by a fixing means.

Furthermore, the angle change operation preventing hand stage includes the second connecting portion provided on the side wall of the backrest portion comprises a plurality of guide grooves, a plurality of holes provided corresponding to the guide groove of the respective The connecting member has a projection formed on the inner side surface that slides in the guide groove of the backrest portion, and is joined to one of the holes of the backrest portion by the fixing means with the projection portion inserted into the guide groove. The angle of the backrest part can be fixed with respect to the part, and when the coupling position of the connecting member and the hole of the backrest part is changed, the backrest part is changed before the change in conjunction with the movement of the protrusion with respect to the guide groove It is characterized in that it is configured to incline backward from the coupling position.

Further, the guide groove has an abutting portion that abuts against the protrusion of the coupling member at a coupling position of the coupling member by the fixing means and the hole of the backrest portion, and the coupling member by the fixing means and the hole of the backrest portion regardless of the presence or absence of binding, characterized in that movement in the forward direction of the back portion by the protrusion of the coupling member abuts the abutment of the guide grooves are configured as to be controlled.

  Further, the angle change operation preventing means preferably has a cover that covers at least a part of the fixing means of the upper connecting member.

Further, the angle change operation preventing means may have a structure having a lock mechanism that operates in conjunction with the mounting of the seat belt on the seat of the vehicle.

Further, a third connection portion connectable to the other of the coupling members is provided on the side wall of the seat portion, and the third of the coupling members is provided to the seat portion with the backrest portion removed from the seat portion. It is good to comprise so that it can couple | bond with this connection part.

Moreover, it is good also as a structure in which one connection of the 1st connection part provided in the said seat part and a connection member has a detachable means.

  The vehicle child seat according to the present invention has an angle adjustment mechanism that can securely fix the backrest portion to the seat portion, so that the angle of the backrest can be fixed at a desired angle, and the backrest portion can be secured even when the vehicle collides forward. The child restraint attached to the child car seat during use because it does not push the child from behind by rotating it forward and has means to prevent the seated child from changing the angle of the backrest. This prevents the harness belt from becoming too tight and squeezes the child, and conversely, the harness belt does not loosen and the safety is not impaired.

In addition, when the child grows up, it is safe because the backrest can be removed from the seat and the child can be secured directly with the seat belt installed on the vehicle. Does not form a protrusion toward the child, and the component of the angle adjustment mechanism is maintained in a state where it is coupled to the seat or the removed seat surface when the backrest is removed from the seat. There is an effect to prevent the loss of.

  Embodiments of the present invention will be described below with reference to the drawings.

When the child seat of the present invention is used for a baby / infant, the child seat is fixed by a seat belt provided on the vehicle, and the child / child restraint harness belt (not shown) provided on the child seat is used to restrain the child / child. . And when used by young people whose weight and height are higher than those of babies and infants, it is a child seat that directly restrains the young people with the seat belt provided on the vehicle, and when used for young people, depending on the degree of growth, the child seat The seat portion 1 can be selected from two methods of use: a state in which the backrest portion 2 is mounted and a state in which the backrest portion 2 is detached.

As shown in FIGS. 1 to 9, the vehicle child seat according to the first embodiment of the present invention connects a seat portion 1 on which a child is seated, a backrest portion 2 that receives the back of the child, and the backrest portion. A child seat having a connecting means, wherein the connecting means is configured such that the backrest portion can be attached to and detached from the seat portion, and when the backrest portion is mounted, the backrest portion can be fixed to the seat portion at a plurality of angles. Composed.

The connecting means includes a first connecting mechanism including a pair of left and right shaft portions 11 formed at the rear end position in the traveling direction of the seat portion on the vehicle and a pair of left and right hook portions 21 formed at the lower end position of the backrest portion. The shaft 11 and the hook 21 can be attached to and detached from the first connecting mechanism in a state where the backrest 2 is tilted with respect to the seat 1, and the backrest with respect to the seat 1 In the state where 2 is inclined, the hook portion 21 is engaged with the shaft portion 11, and the backrest portion 2 is rotated with respect to the seat portion 1 without the backrest portion 2 being detached from the seat portion 1. Configured to engage possible.

Further, in the connecting means, the second connecting mechanism has a plurality of connecting positions provided on the first connecting portion 12 formed on the left and right side wall portions of the seat portion and on the left and right side wall portions of the backrest portion. The second connection part 22 having one side 31 is rotatably coupled to the first connection part 12, and the other 32 is detachable from an arbitrary connection position of the second connection part 22. It has the connection member 3 couple | bonded.

The first connecting portion 12 of the seat portion 1 is formed with a hole 14 connecting the inner side surface and the outer side surface at the tip position of the hook-like arm portion 13 formed on the side wall, and the second connection of the backrest portion 2 The portion 22 is formed corresponding to a plurality of guide grooves 23 provided on at least one surface of the side wall portion of the backrest portion 2 (in this embodiment, the outer surface of the side wall portion of the backrest portion) and each guide groove 23. A hole 24 connecting the inner side and the outer side of the side wall.

The connecting member 3 has a substantially U-shaped cross section, and one hole 33 and the other hole 34 are provided on the left and right surfaces facing each other at the positions of the one 31 and the other 32 in the vertical direction. The one hole 33 is pivotally connected to the seat portion 1 by the first connecting portion 12 by the shaft member 4. The shaft member 4 in this embodiment includes a shaft main body 44 composed of a head portion 41, a shaft portion 42 and a claw portion 43, and a bearing member 48 composed of a head portion 45, a shaft portion 46 and a claw receiving portion 47. In this embodiment, plastic is used as the material, but a part or all of it may be formed of metal, and the shaft member 4 is not limited to the configuration of this embodiment. Existing shaft forming members such as kanuki and screws can be appropriately selected.

The other hole 34 provided on the left and right surfaces facing each other on the other side of the connecting member 3 is provided with any of the plurality of holes 24 provided on the left and right side walls of the backrest 2 by the shaft member 5. The shaft member 5 is provided with a means for preventing the shaft member 5 from coming off from the connecting member 3.

  The shaft member 5 in this embodiment is inserted from the outer hole 34 a of the other hole 34 of the connecting member 3, passes through the hole 24 on the side wall of the backrest 2, and protrudes from the inner hole 34 b of the connecting member 3. A distal end portion 51, a knob portion 52 that contacts the outer surface 35 a of the connecting member 3, and a shaft portion 53 formed between the distal end portion 51 and the knob portion 52.

A locking claw 54 partially enlarged in the outer direction of the shaft is formed at the tip 51 of the shaft member 5, and is formed in the hole 24 on the side wall of the backrest 2 and the hole 34 b on the inner side of the connecting member 3. Are provided with a notch 25 and a notch 36 for avoiding the locking claw 54, and the shaft member 5 is inserted into the other hole 34 of the connecting member 3 and the hole 24 on the side wall of the backrest 2, and the connecting member 3 is engaged with the outer surface 35b of the inner wall in the other 32 of the connecting member 3 by rotating the knob portion 52 in a state where the other 32 of the third member is coupled to the hole 24 of the backrest portion 2. Configured to do.

Further, in order to maintain the engaged state, the outer peripheral portion 55 of the knob portion 52 and the outer surface 35a of the connecting member 3 are provided with engaging portions 56 that can be locked to each other. In this embodiment, the front end portion 51 of the shaft member 5 is formed in a bifurcated shape, and when the front end portion 51 of the shaft member 5 is bent, the shaft member is inserted into the outer hole 34 a in the other 32 of the connecting member 3. 5 is configured to be insertable, and after the tip 51 of the shaft member 5 is inserted into the outer hole 34a in the other 32 of the connecting member 3, the shaft member 5 is inserted into the bifurcated portion on the tip side of the shaft member. By inserting the core member 57 that also serves to prevent the bending of the shape and to reinforce, the distal end portion 51 of the shaft member 5 becomes difficult to insert into the outer hole 34a in the other 32 of the connecting member 3, and the shaft from the connecting member 3 It is configured so that the member 5 can be prevented from being detached and lost.

Further, the connecting member 3 is formed with a protrusion 37 that slides in the guide groove 23 of the backrest 2 on the inner surface, and the backrest is supported by the shaft member 5 with the protrusion 37 inserted into the guide groove 23. The angle of the backrest 2 is fixed to one of the two holes 24 so that the angle of the backrest 2 can be fixed with respect to the seat 1, and when the coupling position between the connecting member 3 and the hole 24 of the backrest 2 is changed, In conjunction with the movement of the protrusion 37 with respect to the guide groove 23, the backrest 2 is configured to be inclined once more backward than the coupling position before the change, so that the child seated on the child seat of the present invention When the angle changing operation is started, the coupling state of the connecting member 3 and the hole 24 of the backrest 2 by the shaft member 5 is released, and the connecting member 3 is rotated, the protrusion 37 moves relative to the guide groove 23. In conjunction with the back When the back portion 2 is inclined rearward and the rear surface of the back portion 2 of the child seat comes into contact with the front surface of the back portion of the vehicle seat, it is difficult to turn the connecting member 3 and the angle of the back portion 2 can be changed. Can be prevented.

The positions of the holes 24 and the grooves 23 provided in the left and right side walls of the backrest 2 and the direction of the grooves 23 are linked to the position of the backrest 2 before the change in conjunction with the movement of the projection 37 with respect to the guide groove 23. The groove 23 may be appropriately set within a range that is once inclined backward, and the groove 23 may not be formed linearly but may be curved or bent. Further, as shown in FIG. A plurality of holes 24 to be coupled to the other may be provided at a plurality of positions with respect to one groove 23. In this case, the groove is bent at the position of the groove 23 corresponding to the coupling position of the hole 24 of the connecting member 3 and the backrest portion 2. If it does, the angle adjustment operation | work of the backrest part 2 will become easy.

The guide groove 23 has an abutting portion 26 that abuts on the protrusion 37 of the connecting member 3 at the coupling position of the connecting member 3 by the shaft member 5 and the hole 23 of the backrest portion 2. Regardless of whether or not the coupling member 3 and the hole 24 of the backrest portion 2 are coupled, the projection 37 of the coupling member 3 abuts against the abutting portion 26 of the guide groove 23 to move the backrest portion 2 in the forward direction. Therefore, even if the connecting state of the connecting member 3 and the hole 24 of the backrest 2 by the shaft member 5 is released due to an operation error or the like, the backrest with respect to the seat surface 1 of the child seat at the time of a forward collision of the vehicle It is configured to increase safety by preventing or reducing the forward rotation of the portion 2.

In this embodiment, the shaft member 5 comprising the knob portion 52 having the locking claw 54 at the tip portion 51 is used for the connection between the other 32 of the connecting member 3 and the hole 24 of the backrest portion 2. The connection between the other of the connecting member 3 and the hole 24 of the backrest portion 2 is not limited to the shaft member 5 of the present embodiment, and an existing shaft forming member such as a pin, kanuki, or screw can be appropriately selected. In this case, the hole 24 of the backrest 2 may be a hole (including a recess) that does not penetrate. Further, in place of the shaft member 5, existing fixing means other than the shaft member such as a locking claw may be used.

Further, a cover (not shown) that covers a portion including the shaft member 5 (fixing means) of the upper connecting member 3 is provided as means for preventing the child seated on the child seat of the present invention from changing the angle of the backrest 2. Thus, the child seated in the coupled state by the backrest 2 and the shaft member 5 (fixing means) of the connecting member 3 is not easily released.

In this embodiment, a third connecting portion having a hole 15 connectable to the other 32 of the connecting member 3 and an avoiding portion 16 for avoiding contact with the protruding portion 37 on the side wall of the seat portion 1. 17, with the backrest 2 removed from the seat 1, the shaft member 5 provided on the other 32 of the connecting member 3 and the hole 15 provided on the side of the seat 1. The shaft member 5 is configured to be connectable. At that time, the connecting member 3 is arranged so as to cover the upper part of the side wall of the seat portion 1, so that the connecting member 3 does not get in the way and the components are lost when the backrest portion 2 is removed. Can be prevented.

In the present invention, as a means for preventing the child seated on the child seat from changing the angle of the backrest 2, when the child seat is fixed to the vehicle seat by the vehicle seat belt, the seat belt contact of the vehicle The movable member arranged in the section is arranged so as to move by the pressing force of the seat belt of the vehicle, and the link member connected to the movable member is connected to the lock member that locks the movement of the connecting member 3. By providing a lock mechanism (not shown), the child seat may be fixed to the vehicle seat by the vehicle seat belt to automatically prevent the angle of the backrest from being changed.

In the present invention, the connection between the first connecting portion provided on the seat portion 1 and the one 31 of the connecting member 3 may be detachable. In this case, the hole 34 and the backrest of the other 32 of the connecting member 3 are provided. Since the backrest part 2 can be removed from the seat part 1 with the connection of the part 2 maintained, the connecting member 3 does not get in the way when the backrest part 2 is removed and used. One connection between the first connecting portion and the connecting member 3 is the shaft member 5 (fixing means) for fixing the second connecting portion described in the first embodiment and the other 32 of the connecting member 3. By using the same structure as the above, it is possible to prevent the shaft member 5 (fixing means) itself from being detached from the connecting member 3 and losing the parts.

  The child car seat for a vehicle according to the present invention has an angle adjustment mechanism for a backrest portion having a means for preventing an angle change operation of the backrest portion by a seated child, and can further remove the backrest portion from the seat portion. It is possible to realize a child car seat that can be used safely in a wide range of age groups, and can be widely used in industry.

It is a perspective view which shows the state which removed the backrest part from the seat part in 1st Example of this invention. It is a perspective view which shows the state before the coupling | bonding of the backrest part and connection member in 1st Example of this invention. It is a side view which shows the state which removed the backrest part and connection member in 1st Example of this invention. It is sectional drawing of the shaft member 4 in 1st Example of this invention. It is sectional drawing of the shaft member 5 in 1st Example of this invention. It is a principal part longitudinal cross-sectional view for description of the 2nd connection part in 1st Example of this invention. It is a principal part side view of the 2nd connection part in 1st Example of this invention. It is a principal part side view at the time of seeing the 2nd connection part in 1st Example of this invention from a seating position. It is a side view which shows the use condition at the time of removing the backrest part in 1st Example of this invention. It is a reference side view which shows the modification of 1st Example of this invention. It is a reference perspective view which shows a prior art. It is a reference side view which shows a prior art.

1: seat part, 2: backrest part, 3: connecting member, 4: shaft member, 5: shaft member, 11: shaft part, 12: first connecting part, 13: hook-shaped arm part, 14: hole, 15 : Hole, 16: avoidance part, 17: third connection part, 21: hook part, 22: second connection part, 23: guide groove, 24: hole, 25: notch part, 26: contact part, 31 : One, 32: the other, 33: one hole, 34: the other hole, 34a: the outer hole, 34b: the inner hole, 35a: the outer surface, 35b: the inner surface, 36: the notch, 37: Projection part, 41: head part, 42: shaft part, 43: claw part, 44: shaft main body, 45: head part, 46: shaft part, 47: claw receiving part, 48: bearing member, 51: tip part, 52 : Knob part, 53: Shaft part, 54: Locking claw, 55: Outer peripheral part, 56: Engagement part, 57: Core member, 81: Seat part, 82: Locking shaft, 83: Backrest part, 84: F 91, seat, 92: backrest, 93: stopper pin, 94: locking hole, 95: harness belt

Claims (7)

A seat on which the child is seated; a backrest that receives the back of the child; and a connecting means that connects the seat and the backrest;
The connecting means is configured such that the backrest portion can be attached to and detached from the seat portion, and the backrest portion can be fixed to the seat portion at a plurality of angles.
Furthermore, in the vehicle child seat having the angle change operation prevention means of the backrest portion by the seated child ,
The coupling means includes a coupling portion provided on the rear upper surface of the seat portion, and a coupling portion provided at a lower end of the backrest portion, the first coupling mechanism in which the backrest portion is detachably and pivotably coupled.
A first connection portion provided on the side wall of the seat portion, a second connection portion having a plurality of connection positions provided on the side wall of the backrest portion, and one of which is rotatable with respect to the first connection portion. A vehicle child seat comprising: a second connecting mechanism having a connecting member coupled to the second connecting portion and detachably coupled to the second connecting portion by a fixing means . The angle change operation preventing hand stage includes the second connecting portion provided on the side wall of the backrest portion comprises a plurality of guide grooves, a plurality of holes provided to correspond to the guide grooves of each,
The connecting member is formed with a protrusion that slides in the guide groove of the backrest on the inner side surface, and the seat is joined to one of the holes of the backrest by the fixing means with the protrusion inserted into the guide groove. The angle of the backrest part can be fixed with respect to the
When the coupling position between the connecting member and the hole in the backrest portion is changed, the backrest portion is configured to be inclined once more backward than the coupling position before the change in conjunction with the movement of the projection portion with respect to the guide groove. The vehicle child seat according to claim 1, wherein: The guide groove has an abutting portion that abuts against a protruding portion of the connecting member at a connecting position of the connecting member and the backrest hole by the fixing means,
Or without coupling with the hole of the connecting member and the backrest portion by the fixing means, movement in the front direction of the back portion by the protrusion of the coupling member abuts the abutment portion of the guide groove is controlled 3. The vehicle child seat according to claim 2 , wherein the child seat is configured as described above. The child seat for a vehicle according to any one of claims 1 to 3 , wherein the angle change operation preventing means includes a cover that covers at least a part of the fixing means of the upper connecting member. The vehicle child seat according to any one of claims 1 to 4 , wherein the angle change operation preventing means includes a lock mechanism that operates in conjunction with the mounting of the seat belt on the seat of the vehicle. A third connection portion that is connectable to the other of the coupling members is provided on the side wall of the seat portion, and the third connection is provided in which the other of the coupling members is provided on the seat portion with the backrest portion removed from the seat portion. The vehicle child seat according to any one of claims 1 to 5 , wherein the child seat is configured so as to be connectable to the portion. The vehicle child seat according to any one of claims 1 to 5 , wherein one connection between the first connecting portion provided on the seat portion and the connecting member has a detachable means.

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