JPS6134200Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a baby carriage, and particularly relates to an improvement in the folding mechanism of a foldable baby carriage having a chair-shaped basic structure.

BACKGROUND OF THE INVENTION A foldable baby carriage having a chair-shaped basic structure that is of interest to this invention is, for example, one described in Japanese Patent Application Laid-open No. 110543/1983.
Using the terms and reference numbers in this publication,
To explain the folding mechanism of the baby carriage disclosed here, when the baby carriage is to be folded, the engagement between the contact frame 11 and the rear leg lever 4 is released, and the hand push lever 1 is released.
If you push down forward, the seat frame and the push rod 1 will be drawn to each other so that they are aligned with the slider 8 part as a reference, and in this case,
Two links 5 and 6 are pivotally attached to a contact frame 11 provided at the lower end of the push rod 1, and each link 5,
The lower end of 6 is pivotally connected to the front leg lever 3 and the rear leg lever 4, so as the upper halves are brought together, the links 5 and 6 pull the front leg lever 3 and the rear leg lever 4 closer together. As a result, the push rod 1,
A folded state is obtained in which the seat frame 2, the rear leg lever 4, and the front leg lever 3 are aligned with each other while extending in the vertical direction.

The slider 8 mentioned above is slid on the hand lever 1 when a reclining operation is to be performed, and during the folding operation, the slider 8 is slid on the hand lever 1.
is kept in place on top of the screen.

Problems to be Solved by the Invention When paying attention to the above-mentioned folding operation of the baby carriage, the push rod 1 is brought to a lower position by the link 6 being rotated downward, but the slider 8 is moved from the push rod 1. Therefore, in order to absorb this downward displacement of the push rod 1, the front leg rod 3 must be able to bend with respect to the seat rod (2).
Therefore, if the front leg lever 3 does not have the link 5,
The push rod 1 cannot be drawn towards the rear leg rod 4.

Therefore, the link 5 is necessary to achieve the desired folding operation, and the mechanism that allows the front leg rod 3 and the seat rod 2 to be bent is also necessary. Therefore, the number of parts of the baby carriage increases, and as a result, the structure becomes relatively complex.

Therefore, this invention has a small number of parts and therefore has a simple configuration. The purpose is to provide a baby carriage that can be folded freely.

Means for Solving the Problems This invention is particularly characterized in that the member that pivots the upper end of the front leg is provided so as to be slidable with respect to the push member. That is, the baby carriage of this invention has: (1) a push member including a slide guide rod that is substantially oriented in the vertical direction; and (2) a push member that slides on the slide guide rod so that when the baby carriage is in the open state, the slide guide rod has two parts. (3) a front leg whose upper end is pivoted to the slider; and (4) a longitudinal midpoint of the front leg. (5) one end of the rear leg is rotatably connected at the longitudinally intermediate portion thereof, and the other end is rotatably connected at the lower end of the push member; When the baby carriage is open, it rotates upward relative to the rear legs, bringing the push member to a relatively upper position, and when the stroller is closed, it rotates downward relative to the rear legs. (6) one end of which is rotatably connected to the front leg at a longitudinally intermediate portion thereof, and which is located at a position below the position of the slider of the slide guide rod; The other end is rotatably connected. A folding interlocking connecting rod,
It is equipped with

Effects of the invention According to this invention, when the baby carriage is folded,
Since the slider slides upward on the slide guide rod, even if the support angle rotates downward and the pushing member is displaced downward, the front leg can still be displaced upward, and due to the action of the folding interlocking connecting lever, the front leg It can be drawn to the pushing member. Further, the rear leg is pulled up via the front leg by the slider sliding upward as described above while connected to the support angle connected to the lower end of the pushing member.
This rear leg may also be brought into alignment with the push member.

Therefore, like the conventional baby carriage mentioned above,
Components corresponding to link 5, front leg rod 3 and seat rod 2
There is no need for a member for bendably connecting the folding and folding parts, and the number of parts can be reduced. As a result, a folding mechanism with a simple structure can be obtained.

Embodiment FIG. 1 is a perspective view showing an embodiment of this invention in an open state. FIG. 2 is a side view of FIG. 1. FIG. 3 is a side view showing the baby carriage of FIGS. 1 and 2 in a closed state.

The configuration of the baby carriage shown here will be explained with reference mainly to the drawings showing the baby carriage in the open state. Push member 1 for manual push operation by a person transporting and operating this baby carriage
is a member having an overall inverted U shape, and a grip portion 2 is formed at the horizontal portion of the upper end. The portion of the pushing member 1 that faces substantially in the vertical direction is a slide guide rod 3.
Configure. A slider 4 is slidably provided on the slide guide rod 3. slider 4
The upper end of the front leg 6 is pivotally supported via a pivot pin 5. The left and right front legs 6, 6 are connected by a front leg connecting rod 7 for reinforcement. The front connecting rod 7 may be used to form a footrest (not shown) on which the feet of an infant placed in the baby carriage can be placed. A freely rotatable front wheel 8 is attached to the lower end of the front leg 6. A rear leg 9 is rotatably connected to a longitudinally intermediate portion of the front leg 6. In this embodiment, the rear leg 9 has a pivot pin 10 on the side of the front leg 6.
It is pivotally supported via a pivot pin 12 to a connector 11 attached by. Left and right hind legs 9,9
are connected by a rear leg connecting rod 13 for reinforcement. A rear wheel 14 is rotatably attached to the lower end of the rear leg 9. At the middle part of the rear leg 9 in the longitudinal direction,
One end of the support angle 15 is rotatably connected via a pivot pin 16. A lower end of a push member is rotatably connected to the other end of the support angle 15 via a pivot pin 17. As mentioned above, the connector 11
The pivot pin 10 that attaches the front leg 6 to the front leg 6 also rotatably connects the folding linkage connecting rod 18.
The rear end of this folding interlocking connecting rod 18 is connected to the pivot pin 1
9, the slide guide rod 3 is rotatably connected to a position below the slider 4.

In the above configuration, the folding operation will be explained below with reference to FIGS. 1 to 3.

When the stroller is in the open position, support angle 1
5 is in a state in which it has been rotated upward with respect to the pivot pin 16 with respect to the rear leg 9, and the pushing member 1 has been brought to a relatively upper position, and the slider 4 is in a state in which it is in a state in which it is in a state in which it has been brought to a relatively upper position. It is located relatively below.
In this state, a triangle is formed between the lower part of the pushing member 1, the upper part of the rear leg 9, and the rear part of the folding interlocking connecting rod 18, and an open state is established. If the slider 4 is locked against the slide guide rod 3 so that it does not slide, this open state is maintained. Therefore, although not shown, a locking means for selectively inhibiting the sliding of the slider 4 with respect to the slide guide rod 3 is provided by the slider 4.
It is preferable to provide it in conjunction with.

To change from the open state to the closed state as described above, first the slider 4 is brought into a state in which it can slide relative to the slide guide rod 3. Next, push member 1
After slightly lifting the support angle 15 to align it with the push member 1, the push member 1 may be pushed downward while keeping the rear wheel 14 on the ground. In response, the support angle 15 rotates downward, causing the slider 4 and slide guide rod 3 to slide, and the push member 1 to be brought to the downward position. Moreover, as a result, the slider 4 is brought to a position relatively above the slide guide rod 3. Accordingly, the folding interlocking connecting rod 18 is tilted so that its front end faces upward, the front leg 6 is substantially aligned with the push member 1, and the rear leg 9 is also aligned with the push member 1. They are substantially parallel to each other. In this state, if the sliding of the slider 4 with respect to the slide guide rod 3 is prohibited by a locking means (not shown), the closed state shown in FIG. 3 is maintained. In the state shown in FIG. 3, the two front wheels 8 and the two rear wheels 14 are brought to the same height, so this baby carriage can stand on its own in the folded state.

To change from the closed state to the open state, the slide guide rod 3 and the slider 4 are unlocked, the push member 1 is held, and the entire baby carriage is suspended in the air. Correspondingly, the weight of the baby carriage acts, and the support angle 15 moves to the pivot pin 17 at the lower end of the push member 1.
At the same time, as the slider 4 slides downward on the slide guide rod 3, the folding interlocking connecting rod 18 rotates so as to be in a substantially horizontal state. In response to this, the front leg 6 rotates away from the push member 1, and at the same time, following the movement of the push member 1, the rear leg 9 is rotated through the support angle 15.
rotates away from the front leg 6. At the end of this series of operations, the open state shown in FIGS. 1 and 2 is established.

The gist of this invention is a folding mechanism for a baby carriage, and the illustration of a hammock for carrying an infant is omitted. However, this hammock can be attached using the push member 1 or the folding interlocking connecting rod 18.

The baby carriage folding mechanism of this invention can be applied to baby carriages having various folding mechanisms based on this invention. For example, in the embodiment, the grip portion 2 of the push member 1, the front leg connecting rod 7, and the rear leg connecting rod 13 are made of a series of rods, but a stroller with a bendable structure may also use this. The folding mechanism of the invented baby carriage can be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of this invention in an open state. FIG. 2 is a side view of FIG. 1. FIG. 3 is a side view showing the baby carriage of FIGS. 1 and 2 in a closed state. In the figure, 1 is a push member, 3 is a slide guide rod, 4 is a slider, 5, 10, 12, 16, 1
7 and 19 are pivot pins, 6 is the front leg, 9 is the back leg, 11
15 is a support angle, and 18 is a folding link connecting rod.

Claims (1)

[Claims for Utility Model Registration] A pushing member having a slide guide rod that is oriented substantially in the vertical direction; and a pushing member that slides on the slide guide rod and is located relatively below the slide guide rod when the baby carriage is in an open state. and a slider located relatively above the slide guide rod in the closed state; a front leg whose upper end is pivotally supported by the slider;
a rear leg rotatably connected at a longitudinally intermediate portion of the front leg; and a rear leg rotatably connected at one end at a longitudinally intermediate portion of the front leg, and the other end rotatably connected at a lower end of the member. They are movably connected, and when the stroller is in an open state, they rotate upward relative to the rear legs to bring the push member to a relatively upper position, and when the stroller is closed, they rotate downward relative to the rear legs. a support angle that is rotated to bring the push member to a relatively lower position; and a support angle that is rotatably connected at one end of the front leg at a longitudinally intermediate portion of the front leg and that is connected to the slider of the slide guide rod. A baby carriage, comprising: a folding interlocking connecting rod, the other end of which is rotatably connected at a position below the baby carriage.