JP4898037B2 - Child seat support leg device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support leg device capable of being accommodated under a child seat when out of service, allowing simple adjustment of its leg length, and reducing the shock applied to an infant in the event of collision. SOLUTION: The support leg device for the child seat is configured so that the front part of the child seat placed on a car seat is supported by the floor surface of the car. The configuration includes a horizontal rod 4 fixed to the undersurface of the child seat 2 and a leg 5 installed in the front of the horizontal rod 4 such that it is swingable up and down and arranged so that the bottom is abutted to and supported by the floor surface of the car. When the child seat 2 is out of service, the leg 5 is folded up to the side with the horizontal rod 4 and accommodated on the undersurface of the child seat 2.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a child seat support leg device in which a front portion of a child seat placed on a vehicle seat is supported by a vehicle floor.
[0002]
[Prior art]
In general, when an infant is put on a passenger car or the like, a child seat is used, and the child seat is required to be fixed on the car seat. A car seat belt is generally used as a means for fixing the child seat on the car seat. However, when the child seat is fixed only by this seat belt, the impact is applied when sudden braking or the like is applied. This causes a problem that the child seat may be tilted forward and the child seat may become unstable.
[0003]
Therefore, as shown in FIG. 10, a support leg is attached to the front portion of the child seat to prevent the child seat from moving. That is, in FIG. 10, reference numeral 1 denotes a car seat, and a child seat 2 placed on the car seat 1 is mounted with an upper portion of a support leg 3 bent in an inverted L shape on its base portion. The lower end of the support leg 3 is pressed against the floor surface of the vehicle, and when an impact occurs, the support leg 3 prevents the child seat from tilting forward.
[0004]
[Problems to be solved by the invention]
However, since the conventional support leg is only of a detachable type using a pipe, there is a problem that when using the child seat, the child seat may be used without using the support leg.
[0005]
Also, when attaching a child seat with a support leg to the car, in order to adjust the length of the support leg according to the height from the car floor to the seat, pipes or sheet metals are fastened with screws, Pipes are connected by inserting and removing pins using the force of a spring. However, in the case of using a screw in this way, if the screw is lost, the support leg cannot be used, and if a spring is used, the mechanism becomes larger by the length of the spring. There's a problem.
[0006]
In addition, when each pipe is a round pipe, it turns when the movable side pipe turns, making it difficult to insert the pin into the hole, and it becomes impossible to use the support leg because the movable side pipe is missing. There are problems such as possible. In addition, some support legs are notched so as to absorb impacts, but in this case, there are problems such as bending in the direction opposite to the design intention.
[0007]
In view of such points, the present invention can fold the support leg into the lower side of the child seat when the support leg is not used, and can easily adjust the length of the leg portion of the support leg. Furthermore, it aims at obtaining the support leg apparatus which can reduce the impact added to an infant at the time of a collision.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a child seat support leg device in which a front portion of a child seat placed on a vehicle seat is supported by a vehicle floor surface, and a horizontal rod fixed to the lower surface portion of the child seat. And a leg portion that is mounted on the front portion of the horizontal saddle portion so as to be swingable and fixable in the vertical direction, and has a lower end portion that is supported by contact with the floor surface of the car. When the child seat is not used The leg is folded to the side of the horizontal saddle, and can be stored on the lower surface of the child seat . The leg includes an outer tube provided with a height adjusting mechanism, and an inner tube slidably inserted into the outer tube. The length of the inner tube can be adjusted by sliding the inner tube. A plurality of adjustment holes are arranged in the axial direction of the inner tube, and the height adjustment mechanism of the outer tube is attached to the adjustment hole. Select height adjustment pin selectively The adjustment lever on which the adjustment pin protrudes is provided with a small protrusion, and a protrusion is provided at a position substantially corresponding to the small protrusion in the height adjustment mechanism. Is provided with an escape prevention plate that engages with a stopper piece of the length adjustment mechanism to prevent the height adjustment pin from coming out completely .
[0010]
The invention according to claim 2, in the invention according to claim 1, characterized in that a concave groove extending in formed in the upper Symbol inner tube axially, detent bosses attached to the outer tube is engaged And
[0011]
The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2 , the leg part is formed in a square shape whose upper part curves backward toward the child seat side.
[0012]
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the horizontal pipe portion is formed in a U-shape, and an intermediate horizontal portion of the horizontal flange portion formed in the U-shape. A hinge case fixed to the upper end portion of the leg portion is attached to the portion so as to be swingable together with the leg portion about an axis of an intermediate horizontal portion of the horizontal flange portion, and the hinge case is attached to the intermediate horizontal portion. A lock shaft that advances and retreats in a direction perpendicular to the axis of the portion is provided, and the intermediate horizontal portion is provided with a lock hole into which the lock shaft is selectively inserted and engaged when the leg portion is expanded or folded. It is characterized by being.
[0013]
According to a fifth aspect of the present invention, in the invention of the fourth aspect , the hinge case is provided with a lever capable of moving back and forth in a direction perpendicular to the axis of the intermediate horizontal portion of the horizontal collar, In addition, a lock shaft biased in the direction of the intermediate horizontal portion of the horizontal flange portion is disposed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0015]
FIG. 1 is a perspective view of a support leg device according to the present invention. The support leg 3 swings up and down on a horizontal hook 4 fixed to the base 2a of the child seat 2 and a front portion of the horizontal hook 4. It is comprised by the leg part 5 mounted | worn so that dynamic fixation was possible. The horizontal flange 4 is formed in a U shape in plan view, and the front ends of the left and right straight portions 4 a are fixed to the base portion 2 a of the child seat 2. A hinge case 6 is mounted on the intermediate horizontal portion 4b of the horizontal flange 4 so as to be swingable and fixed around the axis of the intermediate horizontal portion 4b together with the leg portion 5.
[0016]
That is, a bracket 7 that is divided into two parts in the vertical direction is housed and fixed in the hinge case 6, and the intermediate horizontal part 4 b of the horizontal flange 4 can swing around its axis in the bracket 7. The top end portion of the leg portion 5 is fixed by screws 8 so as to be mounted and orthogonal to the intermediate horizontal portion 4 b of the horizontal flange portion 4. Thus, by swinging the hinge case 6 around the intermediate horizontal portion 4b, the leg portion 5 can be brought into the upright state shown in FIG. 1 or the folded state shown in FIG. By the way, a pair of left and right lock shaft support portions 9 is formed on the upper cover portion 6a of the hinge case 6, and the lock shaft 10 biased toward the intermediate horizontal portion 4b is provided in the lock shaft support portion 9. It is attached. That is, the lock shaft 10 is inserted into the top wall portion of the lock shaft support portion 9, and the spring stopper 11 loosely fitted to the lock shaft 10 is brought into contact with the top wall portion of the lock shaft support portion 9. A spring 13 is interposed between the spring stopper 11 and the E ring 12 provided on the lock shaft 10, and the lock shaft 10 is moved in the direction of the intermediate horizontal portion 4 b of the horizontal flange 4 by the spring 13. It is energized.
[0017]
The left and right lock shaft support portions 9 are housed in a casing-like lever 14. A lock shaft support rib 15 is provided in the lever 14 at a position corresponding to each lock shaft 10, and the rib 15 is a flange provided at the lock shaft support portion 9 and the top end portion of the lock shaft 10. It is inserted and engaged with the portion 10a. Thus, the lever 14 is urged toward the hinge case 6 by the spring 13 via the flange portion 10a. Therefore, when the lever 14 is pulled outward against the spring 13, the lock shaft 10 is moved outward by the lever 14 via the flange portion 10a and can be released from a lock hole described later.
[0018]
On the other hand, the intermediate horizontal portion 4b of the horizontal flange portion 4 includes a lock hole 16 into which the distal end portions of the left and right lock shafts 10 are inserted and engaged when the leg portion 5 is in an upright state, and left and right portions when the leg portion 5 is folded. A lock hole 17 into which the distal end portion of the lock shaft 10 is inserted and engaged is formed in a circumferentially spaced manner.
[0019]
Thus, when the support leg 3 is used, as shown in FIG. 1, the leg portion 5 is set in a substantially upright state with respect to the horizontal flange portion 4, and the lower end portion of the leg portion 5 is placed on the vehicle floor. By the press contact, the child seat 2 is prevented from moving forward. On the other hand, when the child seat 2 is not used, the lever 14 is moved outwardly to pull out the lock shaft 10 from the lock hole 16, and then the lever 14 is swung forward, so that the leg 5 is attached to the lower surface of the child seat 2. By rotating to the side, the legs 5 can be folded as shown in FIG. In this case, the lock shaft 10 is engaged with the lock hole 17 of the horizontal flange 4 and held in a folded state.
[0020]
By the way, the leg portion 5 is composed of an outer tube 5a whose upper portion is bent in the rear side, that is, the child seat 2 side, and an inner tube 5b slidably inserted into the outer tube 5a. The length, that is, the height can be adjusted by sliding the inner tube 5b with respect to the outer tube 5a.
[0021]
6 and 7 are enlarged sectional views of the connecting portion between the outer tube 5a and the inner tube 5b. The inner tube 5b slidably inserted into the outer tube 5a has a plurality of adjustments in the axial direction. Holes 18 and 18 are arranged, and a concave groove 19 extending in the axial direction is provided at a position shifted in phase by approximately 90 degrees in the circumferential direction from the portion where the adjustment holes 18 are arranged. That is, as shown in FIG. 8, the inner tube 5b is provided with a notch hole 19a perpendicular to the axis in the vicinity of the upper end, and the concave groove 19 is formed by pressing inwardly below the notch hole 19a. Is formed.
[0022]
On the other hand, the length of the leg portion 5, that is, the height adjusting mechanism 20 is provided at the lower end portion of the outer tube 5a. Two openings 21 and 22 are provided on the upper and lower sides in the vicinity of the lower end of the outer tube 5a, and a fixing boss 23 protruding from the inner surface of the height adjusting mechanism 20 is inserted into and engaged with the upper opening 21. Thus, the height adjusting mechanism 20 is fixed to the outer tube 5a. Further, a retaining / rotating boss 24 protruding from the inner surface of the height adjusting mechanism 20 is inserted into the lower opening 22, and the tip of the retaining / rotating boss 24 is a concave groove 19 of the inner tube 5 b. Is engaged. Accordingly, the inner tube 5b does not rotate with respect to the outer tube 5a by the engagement between the tip of the retaining / rotating boss 24 and the recessed groove 19 of the inner tube 5b, and only sliding along the recessed groove 19 is possible. Is possible.
[0023]
The height adjusting mechanism 20 extends to a position corresponding to the row of the adjusting holes 18, 18 in a direction perpendicular to the axis of the outer tube 5a, and passes through the opening 25 of the outer tube 5a. A height adjustment pin 26 that is selectively engaged with one of the adjustment holes 18 is mounted. An adjustment lever 27 that can be operated from the outside of the height adjustment mechanism 20 is fixed to the outer end portion of the height adjustment pin 26, and the adjustment pin 26 is adjusted by grasping and pressing or pulling the adjustment lever 27. The hole 18 can be inserted and removed. FIG. 9 is a perspective view showing the configuration of the adjustment pin 26 and the adjustment lever 27. The adjustment lever 27 provided with the adjustment pin 26 protrudes into the height adjustment mechanism 20 on both sides of the adjustment pin 26. FIG. A side wall 28 is provided, and a small protrusion 29 extending in the lateral direction is provided on the outer surface thereof. On the other hand, a protrusion 30 is also provided in the length adjustment mechanism 20 at a position substantially corresponding to the small protrusion 29, and the height adjustment pin 26 is adjusted by the adjustment hole 18 when the small protrusion 29 gets over the protrusion 30. It is designed to be fixed in the state inserted into the. Further, the adjusting lever 27 is provided with a pull-out prevention plate 31 on the side different from the side wall portion 28 to engage with a stopper piece (not shown) of the length adjusting mechanism 20 to prevent the height adjusting pin 26 from being completely pulled out. Is provided.
[0024]
Thus, when the child seat 2 is set on the car seat, the lever 14 is pulled up and the lock shaft 10 is pulled out from the lock hole 17, and then the hinge case 6 is rotated to bring the leg portion 5 into the unfolded state. The lock shaft 10 is engaged with the lock hole 16, and the leg portion 5 is held in the deployed state. Thereafter, the height adjustment pin 26 is pulled out from the adjustment hole 18 of the inner tube 5b by operating the adjustment lever 27, and the height from the floor surface is adjusted by sliding the inner tube 5b as appropriate, and then the height adjustment pin. 26 is inserted into and engaged with the corresponding adjustment hole 18 to fix its position. In this case, the inner tube 5b does not rotate relative to the outer tube 5a because the retaining / rotating boss 24 is engaged with the concave groove 19 provided in the inner tube 5b. Therefore, the position of the adjustment hole 18 does not shift in the circumferential direction with respect to the height adjustment pin 26, and the height adjustment pin 26 can be definitely inserted and engaged with the adjustment hole 18. In addition, when the inner tube 5b is drawn out so that the height of the leg portion 5 is maximized, the height adjusting pin 26 is provided at the end edge portion of the cutout hole 19a formed in the top end portion of the concave groove 19. Contact with each other, the movement of the inner tube 5b in the pulling direction is prevented, the inner tube 5b is not pulled out, and the loss of the inner tube 5b is prevented.
[0025]
Further, in the prior art, the support leg 3 is notched in order to prevent an impact on the support leg 3, but in the present invention, as described above, the bent portion directed toward the child seat 2 at the upper portion of the outer tube 5a. Because of this, stress concentration at the time of impact occurs in the bent part, the direction of bending is stabilized, and the support leg 3 is reliably deformed in the direction of the design intention even under various collision conditions, and the collision applied to the infant The impact of time can be reduced.
[0026]
【Effect of the invention】
As described above, the present invention provides a child seat support leg in which a front portion of a child seat placed on a vehicle seat is supported by a floor surface of the vehicle, and a horizontal leg fixed to the lower surface portion of the child seat. Consists of a heel part and a leg part that is mounted on the front part of the horizontal heel part so as to be swingable and fixable in the vertical direction, and whose lower end part is abutted and supported by the floor of the car. Sometimes the legs are folded to the side of the horizontal collar so that they can be stored on the lower surface of the child seat, so that the parts that make up the support leg are not removed from the device body, and the parts are lost so that the support leg can no longer be used. The child seat can be prevented by attaching the child seat to the car seat without using the support legs. It is also possible to prevent misuse.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a support leg device of the present invention.
FIG. 2 is an exploded perspective view showing a connecting portion between a horizontal flange portion and a leg portion of a support leg.
FIG. 3 is a diagram showing a state in which a leg portion is folded.
FIG. 4 is a perspective view of a hinge case at a connecting portion between a horizontal flange portion and a leg portion of a support leg.
FIG. 5 is a partial cross-sectional perspective view of a lever attached to a hinge case.
FIG. 6 is a longitudinal sectional view showing a connecting portion between an outer tube and an inner tube of a leg portion.
FIG. 7 is a cross-sectional view showing a leg height adjusting mechanism.
FIG. 8 is a perspective view of an inner tube.
FIG. 9 is a perspective view of an adjustment lever.
FIG. 10 is a diagram showing a use state of a conventional support leg.
[Explanation of symbols]
2 Child seat 3 Support leg 4 Horizontal flange 5 Leg 6 Hinge case 10 Lock shaft 11 Spring stopper 13 Spring 14 Lever 16, 17 Lock hole 18 Adjustment hole 19 Concave groove 20 Length adjustment mechanism 21, 22 Opening 23 Fixing boss 24 Retaining / rotating boss 26 Height adjustment pin 27 Adjustment lever 29 Small protrusion 30 Projection

Claims (5)

In a child seat support leg device in which a front portion of a child seat placed on a car seat is supported by a car floor surface, a horizontal saddle portion fixed to a lower surface portion of the child seat, and It has a leg that is mounted on the front so that it can swing and fix in the vertical direction, and has a lower end that comes into contact with and supported by the floor of the car. And can be stored on the underside of the child seat ,
The leg portion is composed of an outer tube provided with a height adjusting mechanism and an inner tube slidably inserted into the outer tube, and the length can be adjusted by sliding the inner tube.
A plurality of adjustment holes are arranged in the axial direction of the inner tube, and a height adjustment pin attached to the height adjustment mechanism of the outer tube is selectively inserted into and engaged with the adjustment hole,
A small protrusion is provided on the adjustment lever on which the adjustment pin protrudes, and a protrusion is provided at a position substantially corresponding to the small protrusion in the height adjustment mechanism,
The child seat support leg device , wherein the adjusting lever is provided with a slip-out preventing plate that engages with a stopper piece of the length adjusting mechanism to prevent the height adjusting pin from being completely pulled out . A concave groove extending in the axial direction formed in the upper Symbol inner tube, characterized in that the detent boss which is attached to the outer tube is engaged, the child seat of the support leg according to claim 1, wherein. The legs, characterized in that the upper portion is formed in the shape dogleg curved rearwardly toward the child seat side, the child seat of the support leg according to claim 1 or 2. The horizontal pipe portion is formed in a U shape, and a hinge case fixed to the upper end portion of the leg portion is attached to the intermediate horizontal portion of the horizontal hook portion formed in the U shape together with the leg portion. The hinge case is mounted so as to be swingable about the axis of the intermediate horizontal portion of the horizontal collar, and the hinge case is provided with a lock shaft that advances and retreats in a direction perpendicular to the axis of the intermediate horizontal portion. The child seat support leg according to any one of claims 1 to 3 , further comprising a lock hole into which the lock shaft is selectively inserted and engaged when the leg portion is expanded or folded. apparatus. The hinge case is provided with a lever capable of moving back and forth in a direction perpendicular to the axis of the intermediate horizontal portion of the horizontal collar, and a lock shaft biased in the middle horizontal portion of the horizontal collar within the lever. The child seat support leg device according to claim 4 , wherein the child seat support leg device is provided.

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