JP2004216993A - Child seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a child seat capable of allowing shock absorbing operation to be performed in the case of a vehicle accident or the like, making a child seat body light weight and compact, and to easily be mounted to a stroller. <P>SOLUTION: The child seat body 32 is detachably mounted to a pedestal base 31 mountable to a vehicle seat, and shock absorbing mechanisms 34, 35 and 38 to ease a shock force are provided when the shock force from a front surface side to a rear surface side is applied against the child seat body 32. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a child seat, and more particularly to a child seat that can be attached to and detached from a vehicle seat and that can reduce an impact force applied to an infant during a vehicle collision or the like.
[0002]
[Prior art]
Generally, a child seat is used when an infant under 6 years old is put on a passenger car. In particular, when an infant weighing less than 10 kg is placed on a child seat, since the neck is not yet mounted, the angle between the seat surface and the back surface of the child seat is widened so that the child seat is held close to the back and the child seat is held. The vehicle is held rearward with respect to the traveling direction of the vehicle, and the body of the infant is fixed to the child seat with a belt.
[0003]
However, when the vehicle receives a shock from the front in such a state, the reaction tends to move the infant forward, and the impact concentrates on the shoulder portion of the infant via the shoulder belt. In particular, there is a problem that the load on the shoulder increases as the reclining state is lowered, that is, the state is set down.
[0004]
Accordingly, a child seat has been proposed that can reduce the impact received by the infant's body even in the event of a vehicle collision, even if the infant is normally kept close to his / her back (see Japanese Patent Application No. 2001-251306).
[0005]
FIG. 11 is a diagram showing a schematic configuration of a child seat capable of reducing the impact applied to the infant body. The child seat 13 is provided on the seat portion 11 and the back portion 12 of the vehicle seat 10 in a rearward direction with respect to the traveling direction A. It is fixed with a seat belt or the like. The child seat 13 has a bucket-shaped child seat main body 14, and the child seat main body 14 is provided with a back surface portion 16 that can swing about a rotation shaft 15 fixed to the child seat main body 14. . At the lower end of the rear part 16, a seat part 18 is arranged via a connecting part 17 so as to be rotatable with respect to the rear part 16. The front end 19 of the seat surface 18 is guided by a guide 20 in a substantially front-rear direction. Therefore, when the back portion 16 rotates back and forth about the rotation shaft 15, the seat portion 18 connected to the back portion 16 by the connecting portion 17 substantially moves in the front-rear direction with the front end portion 19 being guided. It is designed to move.
[0006]
The back portion 16 and the seat portion 18 are supported by biasing springs 21 and 22 provided on the child seat body 14, respectively. In a normal state, the back portion 16 is inclined at an angle θ with respect to the vertical, and The surface portion 18 is held so as to be inclined such that the front end portion 19 is higher than the connecting portion 17. And the back part 16 and the seat part 18 are arrange | positioned by the side view substantially L shape.
[0007]
Further, an impact absorbing mechanism 23, the other end of which is supported by the child seat body 14, is connected to the connecting portion 17 so as to be activated when a strong impact at the time of collision is applied.
[0008]
In such a child seat 13, an infant sits backward with respect to the traveling direction A and is fixed with a belt or the like.
[0009]
Therefore, when the inertia force F is applied to the infant at the time of a vehicle collision or the like, since the point of action of the inertia force F is below the rotating shaft 15, as shown in FIG. It rotates counterclockwise against the pressing force and the pulling force of the urging spring 21, and the rear portion 16 rises. In addition, the seat portion 18 is also pulled by the back portion 16 via the connecting portion 17, and moves rightward in FIG. At this time, the front end 19 of the seat surface 18 is guided by the guide 20. As described above, since the rear portion 16 rises due to the inertial force F, the inertial force F is received by the entire back of the infant, and it is possible to prevent the load from being concentrated on a part of the body such as the shoulder. Further, when a large inertial force F is applied to the infant during a vehicle collision, the shock absorbing mechanism 23 operates, and the impact force on the infant can be reduced and attenuated. In this case, the rear portion 16 rises further in the vertical direction, and the angle with respect to the vertical decreases from θ to θ ′. For this reason, the infant receives the inertial force F on the entire back and can prevent the load from being concentrated on a part of the body such as the shoulder.
[0010]
[Patent Document 1]
Japanese Patent Application No. 2001-251306
[Problems to be solved by the invention]
However, as described above, the child seat provided with the shock absorbing mechanism is large in size because of incorporating the shock absorbing mechanism, and when the child seat is attached to a stroller and can be used as a stroller seat, the stroller itself is used. Must be increased in size, and furthermore, it is difficult to provide a reclining function because of the built-in shock absorbing mechanism.
[0012]
In view of the above, an object of the present invention is to provide a child seat that can perform a shock absorbing action, can have a lightweight and compact structure of a child seat body, and can be easily attached to a stroller. I do.
[0013]
[Means for Solving the Problems]
The invention according to claim 1 is a child seat capable of being mounted on a vehicle seat, comprising: a pedestal base attachable to a vehicle seat; and a child seat body detachable from the pedestal base. A shock absorbing mechanism for reducing the impact force when an impact force from the front side to the rear side is applied to the child seat body.
[0014]
According to a second aspect of the present invention, in the first aspect of the present invention, the shock absorbing mechanism includes a plurality of rows of latch teeth provided on a receiving base and extending in the left-right direction, and a rear surface of the child seat body from a front side. A slider provided with a latch claw that engages with the latch teeth when an impact force directed to the side is applied, and the child seat body is engaged and held by the slider, and a rear surface of the child seat body is provided. The part is shaft-supported and fixed to the pedestal base.
[0015]
According to a third aspect of the present invention, in the first or second aspect, the rear portion of the child seat main body is swingably mounted on the seat surface portion, and the inclination angle of the rear portion with respect to the seat surface portion is adjusted. It is characterized in that it can be selectively changed and adjusted.
[0016]
According to a fourth aspect of the present invention, in the invention according to the third aspect, a plurality of reclining adjustment holes are formed in a front-rear direction on an upper surface of both armrest portions in a seat surface portion of the child seat body, and a rear surface of the child seat body is provided. By selectively engaging the tip of the reclining insertion rod provided to be vertically movable along the rear surface of the part with the reclining adjustment hole, the inclination angle of the back part can be selectively changed and fixed. There is a feature.
[0017]
According to a fifth aspect of the present invention, in the invention according to the fourth aspect, when the child seat main body is mounted on a receiving base, the distal end portion of the reclining insertion rod is provided with a reclining adjustment hole. , And a reclining function canceling device is provided for setting the inclination angle of the rear portion to be able to be changed steplessly.
[0018]
According to a sixth aspect of the present invention, in the invention according to the fifth aspect, the reclining mechanism releasing device has a reclining releasing lever that is swingably mounted on a rear portion of the child seat main body and connected to the reclining insertion rod. The reclining release lever is provided with an engaging portion which comes into contact with the receiving base when the child seat body is attached to the receiving base and swings the reclining releasing lever from the reclining adjusting hole in the releasing direction. It is characterized by having.
[0019]
According to a seventh aspect of the present invention, in the first or second aspect of the invention, the receiving base has a rear mounting / removing slot for engaging a rear fixing pin provided on a rear portion of the child seat body. A shaft support fixing / releasing lever for fixing / releasing a rear fixing pin engaged with the rear attaching / detaching slot is provided in the rear attaching / detaching slot.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of a child seat according to the present invention. A child seat body 32 is detachably mounted on a receiving base 31. As shown in FIG. 3, the cradle base 31 has a bottom plate portion 31a that supports the seat surface of the child seat body 32, and an inclined portion 31b that rises obliquely upward from the rear of the bottom plate portion 31a. Belt loops 33a and 33b for fixing the pedestal base 31 to the vehicle seat are provided on the left and right side edges of the bottom plate section 31a, and a belt loop (not shown) is also provided on the back side of the inclined section 31b. The cradle base 31 is fixed to the vehicle seat by inserting the belt B provided on the vehicle seat through the belt loop 33a or the like.
[0021]
A plurality of latch teeth 34 extending in the left-right direction are arranged on the upper surface of the bottom plate portion 31a of the receiving base 31 in the front-rear direction. A slider 35 having a latch claw that engages with the latch tooth 34 is provided on the upper surface side of the latch tooth 34 so as to be movable in the front-rear direction along a guide rod 36. The slider 35 is formed on its upper surface with a seat engaging portion 37 with which a fitting protrusion described later provided on the child seat main body 32 is engaged. 31 is biased to the front end side. On the other hand, side walls 39 extending in the vertical direction are formed on both left and right side edges of the inclined portion 31b, and rear side attaching / detaching grooves into which rear side fixing pins provided on the child seat main body 32 are engaged. A hole 40 is provided.
FIG. 4 is a perspective view of the child seat main body 32 as viewed from the bottom side and the rear side. A rear part 42 of the child seat main body 32 is swingably attached to a rear part of the seat surface 41. Protective side walls 42a for protecting the head of the infant are protrudingly provided on the left and right sides of the rear portion 42, and an inverted U-shaped handle 43 is swingably fixed to the lower front end of the protective side wall 42a. I have. A bent portion 42b is formed on the outer side surface of the both protective side walls 42a so as to be bent in an inverted U-shape. When the child seat main body 32 is mounted on the receiving base 31, the bent portion 42b is formed. It is adapted to be fitted to the side wall 39 of the receiving base 31. A rear fixing pin 44 is provided in the bent portion 42b to be engaged with the rear mounting hole groove 40 of the receiving base 31.
[0022]
A back seat angle fixing device 45 for fixing and adjusting the angle between the seat surface portion 41 and the back portion 42 is provided on the rear surface of the back portion 42. That is, as shown in the enlarged view of FIG. 5, on the rear surface of the rear portion 42, reclining insertion rods 46 are disposed on both right and left sides so as to be vertically slidable. The projecting projections 47 are respectively engaged with the elongated holes 49 of the transmission link 48, and the left and right transmission links 48 are connected to the reclining lever 50. A triangular reclining stepless release lever 51 is pivotally connected to the rear portion 42 by a shaft 52, and a lower corner of the reclining stepless release lever 51 is connected to the reclining insertion rod 46 by a pin 53. Being pivoted. When the child seat body 32 is mounted on the receiving base 31 at the upper corner of the reclining stepless releasing lever 51, the child seat body 32 comes into contact with the receiving base 31 and swings the reclining stepless releasing lever 51. The release operation projection 54 to be made to project is provided on the side. Reference numeral 55 in the figure denotes a spring that constantly biases the reclining insertion rod 46 in the protruding direction.
[0023]
On the other hand, on the upper surface of the armrest 56 of the seat surface portion 41, a plurality of reclining adjustment holes 57 are provided in the longitudinal direction at positions opposed to the reclining insertion rods 46, and the reclining adjustment holes 57 are provided in the reclining adjustment holes 57. The insertion pin 46a provided at the tip of the reclining insertion rod 46 is configured to be selectively inserted and removed.
[0024]
In the state shown in FIG. 5, when the reclining lever 50 is pulled upward, the reclining insertion rod 46 is moved upward via the transmission link 48 and the projection 47, and is provided at the tip of the reclining insertion rod 46. The insertion pin 46a is pulled out from the reclining adjustment hole 57. Therefore, by swinging the back portion 42 back and forth, releasing the reclining lever 50 and engaging the reclining insertion rod 46 with the other reclining adjustment holes 57, the angle between the seat surface portion 41 and the back portion 42 is reduced. Can be changed and fixed, and can perform reclining operation.
[0025]
As shown in FIG. 4, on the lower surface of the seating surface portion 41 of the child seat body 32, a fitting protrusion extending in the left-right direction for engaging with the seat engaging portion 37 of the slider 35 provided on the receiving base 31. 60 are provided.
[0026]
Therefore, when attaching the child seat body 32 to the cradle base 31, as shown in FIG. 6, the cradle base 31 is fixed to a vehicle seat by a seat belt 34, and a slider provided on the cradle base 31 is provided. The engaging projections 60 of the child seat main body 32 are engaged with the seat engaging portions 37 of the child seat 35, and the fixing pins 44 provided in the bent portions 42b of the child seat main body 32 are attached to and detached from the back of the receiving base 31. Engage and fix in the groove 40.
[0027]
By the way, as shown in FIGS. 3 and 7, in the left and right side walls 39 of the receiving base 31, a shaft for fixing the rear portion 42 of the child seat body 32 at a position corresponding to the rear mounting slot 40. A support fixing mechanism is provided. That is, a release lever 62 that is operated by a release handle 61 is provided in the left and right side walls 39 of the receiving base 31. The release lever 62 is provided with a long hole 63 extending in a direction orthogonal to the axis of the rear mounting / removing slot 40, and a pin 64 projecting from the side wall 39 is inserted into the long hole 63 and engaged. The distal end of the release lever 62 is slidable in a direction crossing the rear mounting slot 40. An ejector 65 also serving as an indicator is provided at a position corresponding to the tip of the release lever 62.
Then, as described above, the child seat main body 32 is mounted on the pedestal base 31, and the fixing pin 44 of the child seat main body 32 is inserted into the rear mounting slot 40 as shown in FIG. When the lever 62 is retracted and the fixing pin 44 is completely inserted into the rear mounting slot 40, the release lever 62 is restored as shown in FIG. 8B, and the fixing pin 44 is moved by the release lever 62. At the same time, the ejector 65 is actuated by the fixing pin 44 and is fixed in the rear attachment / detachment slot 40, indicating that the fixing pin 44 of the child seat body 32 is fixed in the rear attachment / detachment slot 40. On the other hand, when the release lever 62 is pulled up by the release handle 61 against the spring 66, the fixing of the fixing pin 44 is released, and the child seat body 32 can be removed from the pedestal base 31.
[0028]
The child seat attached to the vehicle seat is directed backward with respect to the traveling direction of the vehicle, and the seat engaging portion 37 of the slider 35 in the cradle base 31 fixed to the vehicle seat by the seat belt 34. Then, the fitting projection 60 of the child seat body 32 is engaged, and the fixing pin 44 provided in the bent portion 42b of the child seat body 32 is engaged with and fixed to the rear mounting hole groove 40 of the receiving base 31. Have been. FIG. 1 shows a state of such a child seat.
[0029]
By the way, when the child seat body 32 is mounted on the pedestal base 31 as described above, the inclined portion 31b of the pedestal base 31 comes into contact with the release operation projection 54 provided on the reclining stepless release lever 51, and the reclining stepless release is performed. The lever 51 is swung counterclockwise from the state of FIG. 9A as shown in FIG. 9B, the reclining insertion rod 46 is moved upward, and the insertion pin 46a is detached from the reclining adjusting hole 57. Thus, the back seat angle can be changed steplessly.
[0030]
Therefore, when a child is placed on the child seat and a large inertial force F is generated in the child seat due to a vehicle accident or the like, the seating surface portion 41 of the child seat body 32 and the slider 35 resist the spring 38 along the surface of the latch tooth 34 along with the slider 35. As a result, the impact is buffered, and as shown in FIG. 2, the inclination of the rear portion 42 is increased by the movement of the seat surface portion 41, and the latch claw provided on the slider 35 is By the engagement with the latch teeth 34, the state is maintained in a more vertically raised state. Therefore, the inertia force is received by the entire back of the infant, and the load is prevented from being concentrated on a part of the shoulder or the like.
[0031]
On the other hand, by removing the child seat main body 32 from the cradle base 31, the child seat main body 32 can be used as a stroller seat by attaching the child seat main body 32 as shown in FIG. It can also be used as a carry to move while standing.
[0032]
When the child seat body 32 is used as a stroller seat, the reclining angle is selected by operating the reclining lever 50 to select the reclining adjusting hole 57 with which the insertion pin 46a of the reclining insertion rod 46 engages. And the reclining function can be utilized.
[0033]
【The invention's effect】
As described above, according to the present invention, the child seat main body can be attached to and detached from the pedestal base that can be attached to the vehicle seat, and the pedestal base is directed from the front side to the rear side with respect to the child seat body. Since the shock absorbing mechanism that reduces the above-mentioned impact force when an impact force is applied is provided, the impact force applied to the infant can be effectively reduced, and the child seat body itself can be made lightweight and compact. Only the child seat body can be used as a carry or as a stroller seat.
[Brief description of the drawings]
FIG. 1 is a perspective view of a child seat according to the present invention.
FIG. 2 is a perspective view showing a state in which a rear portion of the child seat according to the present invention rises due to an impact.
FIG. 3 is a perspective view showing a schematic configuration of a receiving base.
FIG. 4 is a perspective view showing a configuration of a child seat body.
FIG. 5 is an enlarged view of a back seat angle fixing device for fixing and adjusting the angle between the seat surface and the back surface.
FIG. 6 is an explanatory diagram of an operation of attaching the child seat body to the receiving base.
FIG. 7 is a diagram showing a configuration of a shaft support fixing mechanism for fixing a rear portion of the child seat body.
FIG. 8 is an explanatory view of the operation of the shaft supporting and fixing mechanism.
FIGS. 9A and 9B are explanatory views of the operation of a reclining insertion rod by a reclining stepless release lever.
FIG. 10 is a diagram showing an operation of attaching the child seat body to the stroller.
FIG. 11 is a schematic side view of a child seat according to the prior art.
FIG. 12 is a schematic side view showing a state where an impact is applied to the child seat shown in FIG. 11;
[Explanation of symbols]
31 Receiving base 32 Child seat body 33a, 33b Belt loop 34 Latch tooth 35 Slider 37 Seat engaging portion 38 Retaining spring 39 Side wall 40 Back mounting / removing slot 41 Seat surface 42 Back surface 43 Band 44 Back fixing pin 45 Back seat angle fixed Device 46 Reclining insertion rod 47 Projection 48 Transmission link 50 Reclining lever 51 Reclining stepless release lever 54 Release operation projection 56 Armrest 57 Reclining adjustment hole 60 Fitting projection 61 Release handle 62 Release lever 65 Injector

Claims (7)

In a child seat capable of being attached to a vehicle seat, the seat base includes a receiving base that can be attached to a vehicle seat and a child seat body that is detachable from the receiving base. A child seat provided with an impact absorbing mechanism for reducing the impact force when an impact force is applied from the front side to the rear side. The shock absorbing mechanism includes a plurality of rows of latch teeth provided on a receiving base and extending in the left-right direction, and slides rearward when an impact force from the front side to the rear side is applied to the child seat body, and A slider provided with a latch claw that engages with a tooth, the child seat body is engaged with and held by the slider, and a rear portion of the child seat body is supported and fixed to a pedestal base. The child seat according to claim 1. 3. The child seat body according to claim 1, wherein a rear portion of the child seat body is swingably mounted on the seat surface portion, and a tilt angle of the rear portion with respect to the seat surface portion can be selectively changed and adjusted. Child seat. A plurality of reclining adjustment holes are formed in the front-rear direction on the upper surface of the armrest portion in the seating surface portion of the child seat body, and a reclining insertion rod movably provided along the rear surface of the rear portion of the child seat body. 4. The child seat according to claim 3, wherein the front end portion of the child seat is selectively engaged with the reclining adjustment hole so that the inclination angle of the rear portion can be selectively changed and fixed. When the child seat body is attached to the cradle base on the reclining insertion rod, the tip of the reclining insertion rod is released from the reclining adjustment hole, and the inclination angle of the back part can be changed steplessly. The child seat according to claim 4, further comprising a reclining function canceling device for setting a state. The reclining mechanism release device has a reclining release lever pivotally mounted on the rear portion of the child seat main body and connected to the reclining insertion rod, and the child seat main body is attached to the reclining release lever and the pedestal base. 6. The child seat according to claim 5, further comprising: an engaging portion that abuts on the receiving base when the reclining is released, and swings the reclining release lever from the reclining adjusting hole in the releasing direction. The pedestal base is formed with a rear mounting slot for engaging a rear fixing pin provided on the rear portion of the child seat body, and the rear mounting slot is engaged with the rear mounting slot. The child seat according to claim 1 or 2, further comprising a shaft support fixing / releasing lever for fixing / releasing the back fixing pin.

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