JPH0126911B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foldable baby carriage.

Conventionally, when the stroller is folded, the left and right width is made as small as possible, resembling a bat. Because of the location of the ring, there was a problem of staining the wearer's own clothes as well as those of others.

Furthermore, even if the width can be reduced, the length cannot be reduced, so there is a problem in that a long and narrow space is required to load the product into the trunk of a car or the like.

Furthermore, since the front wheels and rear wheels are located in opposite directions when folded, there is a problem that the stroller cannot stand on its own in the folded state.

To address this issue, we developed a baby stroller that was designed to reduce its bulk when folded and to be able to stand on its own with four front and rear wheels when folded.
There is a publication number 50705.

In this known baby carriage, the lower end of the push rod main body and the rear legs are flexibly connected by the push rod support angle via a pivot pin, whereby the push rod support angle is connected to the upper half of the rear leg. whether it is rotated along the
Or, by rotating along the lower half of the hind leg, the lower end of the push rod body is brought to a position relatively above or below the hind leg. That is, when the lower end of the push rod body is brought to a position relatively above the hind leg, a triangle is defined by the supporting leg push rod connecting rod, the lower part of the push rod body, and the upper part of the hind leg. and determine the open state of the baby carriage.
When the lower end of the push rod body is brought to a position relatively below the rear leg, the related members are arranged so that the support leg press connection rod, the push rod body, and the rear leg are substantially parallel to each other. The configuration is such that the shape and structure are selected to establish the folded state of the baby carriage.

According to such a configuration, as the push rod support angle is folded, the push rod support angle is rotated in the rising direction to a dead point where the line connecting the upper and lower end pivot pins of the push rod support angle coincides with the extension line of the lower end of the push rod main body. Next, the push rod support angle is rotated in the falling direction, so unless you hold the rear wheel with your foot and pull up the push rod, or press the front end of the support leg push rod connecting rod and pull up the push rod, the push rod will be pushed in the rising direction. The rod support angle cannot be rotated.

For this reason, there was a problem that it could not be folded smoothly.

This invention makes it possible to stand on its own while the front and rear wheels are grouped together when folded, and also allows it to be folded smoothly.
The purpose is to solve the above-mentioned problems.

In this invention, the upper ends of a pair of left and right rear legs 5 having a rear wheel 4 at the upper end and the lower end thereof are rotatably attached to the middle of a pair of parallel left and right armrests 1, and the upper ends of a pair of left and right front legs 3 having a front wheel 2 at the lower end are rotatably mounted. In addition, there is a first
Attach the rear end of the connecting rod 8 so that it can rotate freely,
Furthermore, the rearwardly facing end of a second continuous rod 10 is rotatably attached to the center of the first continuous rod 8, and the tip of the second continuous rod 10 is rotatably attached to the center of the front leg 3.
Above and below the connecting rod 12 are the ends of the armrest 1 and the first connecting rod 8.
Further, a cylindrical body 15 is provided on the outer surface of the first connecting rod 12, and the lower part of the side rod 14 is fitted into this cylindrical body 15 so that it can rotate freely in a fixed position. , and an engagement device that connects the opposing ends of the grips 16 that protrude inwardly from the upper ends of the left and right rods 14 in a manner that they can be folded in the middle, and that can maintain the straight state of both grips 16 at the folded connection portions. 19 is provided, and the distal end of the plate-like body 28 is fixed to the lower end of the side rod 14 so that the distal end thereof circumscribes the rear leg 5 when both grips 16 are in a straight state, and the distal end of the plate-like body 28 is A through-hole 30 is provided in the rear leg 5, a pin 29 is provided on the outer periphery of the rear leg 5, which passes through the through-hole 30 when the rear leg 5 and the plate-like body 28 come into contact, and a pivot shaft 31 is provided at the intersection. Both ends of the opening/closing rod 32 are rotatably attached to the tips of both first connecting rods 8 and the lower part of the rear leg 5, and a second connecting rod 41 having a joint portion bent halfway at the lower end of both rods 14 is attached. When both ends are fixed, the engagement device is released, and the side lever is pushed down while rotating to bend the grip, the armrests are raised and the width is shortened while the front legs are drawn to the rear legs, and the front and rear wheels gather together. To provide a baby carriage that can stand on its own.

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

In the figure, 1 and 1 are a pair of parallel left and right armrests, and in the middle of these armrests 1 and 1 are the upper ends of the left and right pair of front legs 3 and 3 which have a front wheel 2 at the lower end, and a rear wheel 4 at the lower end. The upper ends of a pair of left and right rear legs 5, 5 are rotatably attached via pins 6.

Although the upper ends of the front legs 3 and the rear legs 5 are separately pivoted in the illustrated case, they may be pivoted at one location.

In addition, a first
The ends of the connecting rods 8 are rotatably attached to the central portions of the front legs 3 through the pins 9, and the tips of the second connecting rods 10 are rotatably attached. The central portions of the first connecting rods 8 are rotatably connected.

Furthermore, the ends of the armrest 1 and the ends of the first connecting rods 8 are rotatably attached to the first connecting rods 12 via pins 13, and each of the left and right first connecting rods 12 has the first connecting rods The lower part of the side rod 14 parallel to 12 is rotatably supported.

In the case of the above supporting method, the first connecting rod 12
After fixing the cylindrical body 15 above and below, the side rod 14 is passed through the cylindrical body 15, and the cylindrical body 15 is
It is designed to rotate in a fixed position by collars fixed to the side rods 14 so as to sandwich the top and bottom of the case.

Moreover, grips 16, 16 are provided at the upper ends of both rods 14, 14, which protrude inwardly from each other, and which connect opposite ends so as to protrude forward and bend.

In the illustrated case, the grips 16, 16 are connected by providing protrusions 17, 17 protruding from the back surfaces of the opposite ends, and fitting comb pieces (not shown) provided at the tips of both protrusions 17, 17. Although they are connected by a through pin 18, a hinge may also be used.

Furthermore, an engaging device 19 is provided at the opposing ends of the grips 16, 16 to prevent the grip 16 from being bent in the middle.
is provided.

In the illustrated case, the above-mentioned engagement device 19 has one protruding piece 1
A plate-shaped body 20 is fixed to the upper surface of the remaining protruding piece 17, and a hollow chamber 21 and a through hole 22 through which the hollow chamber 21 and the upper surface communicate are provided, and the hollow chamber 21 is pushed up by a spring 23. In addition, the protruding shaft 25 protruding from the upper surface of the slider 24 is inserted into the through hole 22, and when the grips 16, 16 are extended in a straight line, the through hole 26 provided in the plate body 20 is inserted. protruding shaft 2
5, but other configurations may be used.

Further, when the grips 16, 16 are extended in a straight line, the lower ends of both side rods 14 and the rear legs 5 are attached.
The side beam 14 is connected to the side rod 14.

In the illustrated case, the above connection fixes the end of the plate-shaped body 28 to the lower end of the side rod 14, and also connects the pin 29 protruding from the rear leg 5 and the through-hole 30 provided at the tip of the plate-shaped body 28. are designed to fit together.

In addition, an X
Both ends of the open/close lever 32 are rotatably attached via pins 33.

Both ends of a second connecting rod 41 having a bent joint portion 40 at the center are fixed to the lower ends of the both side rods 14, 14.

The second connecting rod 41 is bent in only one direction and is also extended when the grip 16 is extended into a straight line.

Furthermore, a footrest 34 installed between the lower parts of the front legs 3, 3 connects the inner ends of the pair of plate-like bodies 35, 35 via a pin 36 so as to bend in an inverted V shape in the case shown in the figure. Plate body 3 via pin 37
5 is rotatably attached, and both ends of the rod 39 are rotatably connected to the outer end of the plate-shaped body 35 and the lower end of the protrusion 38 projecting downward from the tip of the first connecting rod 8. Therefore, the footrest 34 can be folded while pulling up the rod 39 during folding.

In the figure, reference numeral 42 denotes a reclining mechanism for a back seat (not shown) provided between the side bars 14, and the reclining mechanism 42 is designed to be folded in conjunction with the folding of the baby carriage so as to reduce its width. Reference numeral 43 denotes a support material for a seat (not shown) installed between the first continuous rods 8, 8. This support material 43 is rotatably attached at both ends to the first continuous rod 8, and the required number of supports are attached between both ends. Bending joint 44
and a rod 4 that connects the support member 43 and the armrest 1.
It is designed to be folded or expanded by rotating 5.

The baby carriage according to the present invention has the above structure, and its operation will be explained next. When folding the baby carriage shown in FIG. Grip 1
By bending 6 and 16, both side rods 14,
14 rotate and rotate the plate-like body 28 together, so the pin 29 and the through-hole 30 are disengaged, and
The connection between the first connecting rod 12 and the rear leg 4 is released.

At this time, the second connecting rod 41 is bent in the same direction as the grip 16.

After that, when both levers 14, 14 are pushed down toward the front, the ends of the first series of bars 8, 8 are pushed down, the ends of the second series of bars 10, 10 are pulled up, and the tips of the first series of bars 8, 8 are raised. Opening/closing rod 32
Since it is rotated in the closing direction, the width is reduced while drawing both rear legs 5 and the first connecting rod 8 toward each other.

At this time, since the rod 39 is pulled up by the rotation of the second connecting rod 10, the plate-shaped bodies 35, 35 of the footrest 34
is bent into an inverted V shape.

When the armrest 1 is placed parallel to the side beam 14 while pulling up the armrest 1, the front legs 3 are pulled toward the rear legs 5, and the four wheels of the front wheels 2 and rear wheels 4 are made to stand on their own as shown in FIG. can be assembled and folded.

In addition, with the width adjustment, the reclining mechanism 4
Each link 42' of 2 is also folded.

Next, when unfolding the folded baby carriage, when the armrest 1 is tilted in the direction of collapse, the first continuous lever 8 rotating in the same direction pushes out the tip of the second continuous lever 10 and the front legs 3, and rotates in the opening direction. The width is expanded by the moving opening/closing rod 32.

At this time, by pushing down the rod 39, the foot rest 34
The plate-like bodies 35, 35 rotate in the extension direction.

When the grips 16, 16 are pulled toward the hand, the lower ends of the side rod 14 and the first connecting rod 12 rise, and the side rod 14 rotates.
The pin 29 fits into the through-hole 30 of the plate-shaped body 29 to connect the lower end of the first connecting rod 12 and the rear leg 5, and the protruding shaft 25 fits into the through-hole 26 of the plate-shaped body 20. The extended state of the grips 16, 16 is maintained.

As described above, according to the baby carriage according to the present invention, when the engagement device is disengaged and the grip is bent, the plate-shaped body rotates together with both side rods, and
When the pin comes out of the hole and the connection between the side rods and the hind legs is released, both side rods are pushed down and the tip of the armrest is pulled up. The front legs are parallel to the hind legs and can be folded smoothly and with low bulk.

Also, since the four wheels are assembled when folded, it can stand on its own.

Further, when the deployment is completed, the rear legs are connected to the side rods through the through-holes and the pins that fit into the through-holes, so a highly stable deployment state can be maintained.

[Brief explanation of drawings]

The drawings show an embodiment of the baby carriage according to the present invention, in which Figure 1 is a perspective view, Figure 2 is a rear view, and Figure 3 is a rear view.
4 is a side view of the folded state, FIGS. 5 and 6 are enlarged plan views showing the bending of the connecting rod, and FIG. 7 is a cross-sectional plan view of the locking part.
Fig. 8 is a plan view of the engagement device, Fig. 9 is a plan view showing the bending of the grip, Fig. 10 is a partially cutaway rear view of the engagement device, Fig. 11 is a side view of the footrest, and Fig. 12 is a front view of the same as above, and FIG. 13 is a front view of the same as above showing the bending. 1...Armrest, 2...Front wheel, 3...Front leg, 4...
Rear wheel, 5... Rear leg, 6... Pin, 7... Pin, 8
...1st continuous rod, 9...pin, 10...2nd continuous rod,
11...Pin, 12...First connecting rod, 13...Pin, 14...Side rod, 15...Cylindrical body, 16...Grip, 17...Protrusion piece, 18...Pin, 19...
Engagement device, 20... plate-shaped body, 21... hollow chamber, 2
2...Through hole, 23...Spring, 24...Slider,
25... protruding shaft, 26... through hole, 28... plate-shaped body,
29...Pin, 30...Through hole, 31...Spindle, 3
2... Opening/closing rod, 33... Pin, 40... Joint part,
41...Second connecting rod.

Claims (1)

[Claims] 1. The upper ends of a pair of left and right front legs 3 having a front wheel 2 at the lower end and a pair of left and right rear legs 5 having a rear wheel 4 at the lower end are rotatably attached to the middle of a pair of parallel left and right armrests 1, and The rearwardly facing end of the first connecting rod 8 is rotatably attached to the upper part of the leg 5, and the rearwardly facing end of the second connecting rod 10 is attached to the center of the first connecting rod 8, and the rearwardly facing end of the second connecting rod 8 is attached to the center of the front leg 3. The tips of the second connecting rods 10 are rotatably attached to the respective parts, and the first connecting rods 1
The end of the armrest 1 and the end of the first connecting rod 8 are rotatably attached to the top and bottom of the armrest 1, and a cylindrical body 15 is provided on the outer surface of the first connecting rod 12. The lower part of the rod 14 is inserted so that it can rotate freely in a fixed position, and the grip 16 that protrudes inward from the upper end of the left and right rods 14 connects the opposing ends so that they can be bent in the middle, and the above-mentioned An engagement device 19 is provided to maintain the straight line state of both grips 16, and the side rod 14 is provided so that the tip end circumscribes the rear leg 5 when both grips 16 are in the straight line state.
The end of the plate-like body 28 is fixed to the lower end of the plate-like body 28, and a through-hole 30 is provided at the tip of the plate-like body 28, and a pin passes through the through-hole 30 when the rear leg 5 and the plate-like body 28 come into contact. 29 is provided on the outer circumference of the rear leg 5, and both ends of an X-shaped opening/closing rod 32 having a pivot shaft 31 at the intersection are rotatably attached to the tips of both first connecting rods 8 and the lower part of the rear leg 5. Furthermore, the baby carriage is constructed by fixing both ends of a second connecting rod 41 having a middle bent joint part at the lower end of both side rods 14.