JPS61215164A - Baby carriage - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a baby carriage, and more particularly to a baby carriage in which a step is mounted so as to extend between a pair of front legs having front wheels.

Prior art: The steps described above generally consist of a pair of steps. Jffllll
It is fixedly installed between j. The height of the step is usually set based on a child of about 2 years old.

Problems to be Solved by the Invention However, there is considerable variation in the age of infants or young children who are placed in prams. For example, baby carriages are used for infants from 2.3 months old to children as young as 3 years old. Furthermore, although infants are of the same age, there is variation in body size.

Therefore, when a small baby or toddler is seated in a baby carriage seat, the baby's feet cannot reach the steps, resulting in a so-called dangling state. On the other hand, for larger children, the distance from the seat to the step is short, so
If you want to put your feet on the steps, you have to bend your knees a lot. Therefore, it feels cramped.

This invention was made to eliminate the above-mentioned inconvenience, and its purpose is to provide a baby carriage whose step height can be adjusted as necessary.

Means for Solving the Problems The steps of the baby carriage according to the present invention include a pair of cylindrical bodies surrounding a pair of front legs and capable of sliding up and down on the front legs; and a lever attached to the cylindrical body so as to be rotatable between the two positions. The cylinder has an engagement wall that can face and engage the outer surface of the front leg. Further, the lever has a contact surface that contacts the outer surface of the front leg from a direction opposite to the engagement wall. This contact surface includes a large diameter portion having a relatively large distance from the center of rotation of the lever and a small diameter portion having a relatively small distance from the center of rotation of the lever.

When the lever is in the first position, the large diameter portion abuts the front leg, thereby causing the engagement wall to engage with the front leg and inhibiting the cylinder from sliding. Next, when the lever is in the second position, the small diameter portion comes into contact with the front leg, thereby disengaging the engagement wall from the front leg and allowing the cylinder to slide.

When the height of the working step is to be changed, the lever at the first position is first rotated and moved to the second position. When the lever is in the second position, the engagement wall of the cylinder body and the front leg are disengaged, allowing the cylinder body to slide. Therefore, the step is slid to the desired height, and then the lever is returned to the first position (Q). In this state, the engagement wall of the cylinder engages with the front leg, and the cylinder is prohibited from sliding. Ru.

Embodiment Referring to FIG. 5, a baby carriage 1 includes a pair of handrails 2.2 extending in the front-rear direction, a seat support rod 3 for supporting a seat,
3, the upper end is attached to the thousand layers 2, 2, and the lower end is the front wheel 4
．． A pair of front legs 5° 5 having a
a pair of rear legs 7 which are attached to and have rear wheels 6.6 at their lower ends;
．． 7 and a U-shaped push rod 8.

The step 9 is attached so as to be passed between the pair of front legs 5, 5.

=6- Step 9 includes a footrest member 10 on which the feet of an infant sitting on the seat of the baby carriage are placed, and a pair of cylinder bodies 11.11 provided on the left and right sides of this footrest member 10. .

The cylinder 11.11 is adapted to surround the front legs 5.5 and to be able to slide up and down on the front legs 5,5. A mechanism for adjusting the height of the step 9 is provided in connection with the cylinder 11.degree. 11 and the front legs 5,5. This step height adjustment mechanism is provided on the left and right sides, but since they are substantially the same, only the step height adjustment mechanism provided on the left side will be explained below.

6 and 7 show an enlarged view of the overlapping portion of the cylindrical body 11 of the step 9 and the front leg 5. Also shown in FIG. 1 is a side sectional view taken along line I--H in FIG. 7.

As is clear from each figure, the cylindrical body 11 is shaped to surround the front leg 5. Specifically, the cylinder 11 includes a front wall 11a, a left side wall 1111, a right side wall 11c,
It has a rear wall 11d. Therefore, the cylinder 11 is
It becomes possible to slide along and on the front leg 5. Then, in accordance with the sliding of the cylinder 11, step 9
The whole thing slides.

As shown in FIGS. 6 and 1, the front wall 11a of the cylindrical body has no wall at its upper portion, and the outer surface of the front leg 5 is exposed at that portion. Further, in the state shown in FIG. 1, the front wall 11a does not extend parallel to the front leg 5, but its upper end is inclined so as to separate from the front leg 5. The left side wall 11b of the cylindrical body 11 projects forward, and the footrest member 10 is rotatably attached to this projecting portion via a bin 12. The footrest member 10 is rotatable between at least a first position shown in FIG. 1 and a second position shown in FIG.

The rear wall 11d of the cylindrical body 11 constitutes an engagement wall that can engage with the outer surface of the front leg 5. Specifically, in this embodiment, an engagement protrusion 13 is formed at the upper end of the rear wall 11d. And 4! ! On the outer surface of the front leg 5 facing the wall 11 (l,
A plurality of engagement recesses 14 that can be engaged with the engagement protrusions 13 are formed in alignment in the vertical direction. The engaging recess 14 may be provided directly on the front leg 5, but in this embodiment, as shown in FIG.
is attached to the front leg 5 via, for example, a bottle.

The footrest member 10 has a contact surface 16 that can come into contact with the outer surface of the front leg 5 from the direction opposite to the rear wall 11d of the cylindrical body 11. The shape of this contact surface 16 is shown enlarged in FIGS. 3 and 14. As shown in the figure, the contact surface 16 includes a circular arc surface having a distance R from the center of rotation of the footrest member 10, and a large diameter portion 16a whose distance is relatively larger than the radius R.
It includes a small diameter portion 16h that is relatively smaller than the radius R.

As shown in FIGS. 1 and 3, the footrest member 10 is
When in the position, the large diameter portion 16a comes into contact with the outer surface of the front 115. At this time, the engagement protrusion 13 of the cylindrical body 11 and the engagement recess 14 of the front leg 5 engage with each other, so that vertical sliding of the cylindrical body 11 is prohibited.

Next, as shown in FIGS. 2 and 4, the footrest member 1 is
0 is rotated clockwise in the figure to the second position, the small diameter portion 16b of the footrest member 10 comes into contact with the outer surface of the front leg 5. If the cylinder 11 does not move at all regardless of the rotation of the upper foot last member 10, a gap will be created between the footrest member 10 and the front leg 5 as shown in FIG. If the cylindrical body 11 is rotated clockwise in the figure to fill this gap, the engagement protrusion 13 of the cylindrical body 11 and the engagement recess 14 of the front leg 5 will be engaged with each other, as shown in FIG. It will be canceled. In order to allow this rotation of the cylinder 11, the front wall 11a of the cylinder 11 is formed to be slightly inclined as described above.

In the state shown in FIG. 2, the cylinder 11 can slide vertically along the front leg 5. Therefore, the step 9 is moved to the desired position, and then the footrest member 1 is moved to the desired position.
0 in the counterclockwise direction in the figure to move it WI to the first position shown in FIGS. 1 and 3. The step 9 is thus fixed at the desired height. Note that if a foot is placed on the footrest member 10 in the state shown in FIGS. 1 and 3, the footrest member 10 attempts to further rotate counterclockwise, increasing the pressing force against the front leg 5.

Therefore, the cylinder 11 is more firmly fixed to the front leg 5.

The embodiments shown in FIGS. 1 to 7 are merely exemplary embodiments of the invention. Therefore, various variations or modifications are possible. Some of the modified examples will be listed and explained below.

L191 Referring to FIG. 8, the rear wall 1 of the cylindrical body 11 constituting the engagement wall
An engaging protrusion 17 is formed on 1d.

The front leg 5 facing the rear wall 11d is provided with serrated teeth 18 that can engage with the engagement protrusion 17.

Also in this embodiment, when the footrest member 10 is in the first position shown, the engagement protrusion 17 and the serrated teeth 1
B is engaged, and sliding of the cylindrical body 11 is prohibited. When the footrest member 10 is rotated clockwise in the figure, the engagement is released and the cylinder 11 can be slid.

With reference to the bundle IL and FIG. 9, the rear wall 1 of the cylindrical body 11 constituting the engagement wall
The upper part of 1d is shaped to form a storage space between it and the front leg 5. A pressing engagement member 19 is arranged within this storage space.

The press engagement member 19 has a tapered cross-sectional shape that becomes thicker as it goes upward. As shown in FIG. 9, when the footrest member 10 is in the first position, the pressing engagement member 19 and the front #5 are pressed into engagement, and this frictional force prevents the cylinder 11 from sliding. Ru. When the footrest member 10 is rotated clockwise in the figure, the engagement between the pressing engagement member 19 and the front leg 5 is released, and the frictional force between them is eliminated. Therefore, the cylinder 11 can slide along the front leg 5. Note that, in order to increase the frictional force between the press engagement member 19 and the front leg 5, it is preferable that the press engagement member 19 is made of, for example, rubber.

Referring to FIG. 10, a pressing protrusion 20 is formed on the rear wall 11 of the cylindrical body 11 (+-F direction) that constitutes the engagement wall. , the front leg 5 has a pressing protrusion 20
A soft body 21 that can be press-engaged with is attached. For example, rubber or the like is used as the soft body 21. In the state shown in FIG. 10, the pressing protrusion 20 and the soft body 21 are in pressing engagement, and the sliding of the cylindrical body 11 is prohibited by the frictional force between them. Then, when the footrest member 10 is rotated, the engagement between the pressing protrusion 20 and the soft body 21 is released, and the cylindrical body 11 can be slid.

Referring to FIG. 5, by moving the step 9 to its highest possible position, it becomes possible to use the step 9 as an extension of the baby carriage seat. Considering that the step 9 is used as a seat extension part in this way, the footrest member 10 is preferably configured so that its length in the front and back direction can be extended.

An example thereof is shown in FIG. In the embodiment shown, the footrest member 22 includes a top plate 22 that is superimposed on each other.
a and a lower plate 22b. Upper plate 22a and lower plate 22
b are hinged at their respective front end portions via pins 23. Therefore, the upper plate 22a
As shown by the imaginary line in the figure, it becomes possible to rotate forward. The end of the rotation of the upper plate 22a is defined by the contact between the front end surface of the upper plate 22a and the front end surface of the lower plate 22b.

Good Condition 1 In each of the embodiments described above, the footrest member 10 or 22 was rotated in order to release the engagement between the cylinder and the front leg.

In other words, the footrest member 10 or 22 functioned as a rotation operating lever.

However, as a variant, the foot rest member 10 or 22
may be fixed to the cylindrical body 11. In this case, each of the pair of cylinders 11 is provided with a lever for releasing the engagement between the cylinders and the front legs. This lever must have an abutting surface similar to the footrest member described in each of the above embodiments. In each of the embodiments described above, it is understood that this lever extends between the pair of cylinders, thereby also serving as a footrest member.

Effects of the Invention As described above, according to the present invention, the height of the step can be changed with a very simple operation.

Therefore, the height of the step can be increased when a small infant or toddler is seated on the seat, and the height of the step can be lowered when a large infant is seated on the seat. In this way, a comfortable environment can be provided for the infant or toddler placed in the baby carriage.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing essential parts of the invention. 1 is also a view taken along line II in FIG. 7. FIG. 2 shows the state of the footrest member 10 in FIG. 1.
It is a figure which shows the state after rotation operation. FIG. 3 is a diagram for clarifying the shape of the abutting member 16 of the footrest member 1o. FIG. 4 is a diagram showing a state after the footrest member 10 has been rotated from the state shown in FIG. 3. FIG. 5 is a perspective view showing an embodiment of the present invention. FIG. 6 shows the cylinder body 11 and front leg 5 of the step 9 shown in FIG.
FIG. 2 is an enlarged side view showing an overlapping portion. FIG. 7 is a view taken along the line Vl-Vl in FIG. 6. FIG. 8 is a side sectional view of a main part of another embodiment of the present invention. FIG. 9 is a side sectional view of a main part of still another embodiment of the present invention. FIG. 10 is a side sectional view of a main part of still another embodiment of the present invention. FIG. 11 is a side view of a main part of still another embodiment of the present invention. In the figure, 1 is a baby carriage, 5 is a front leg, 9 is a step, 1
0 constitutes a footrest member, 11 constitutes a cylindrical body, and 11d constitutes an engagement wall J
13 is an engagement protrusion, 14 is an engagement recess, 1
6 is a contact surface, 16a is a large diameter portion, 16b is a small diameter portion, 1
7 is an engagement protrusion, 18 is a serrated tooth, 19 is a press engagement member, 20 is a press protrusion, 21 is a soft body, 22 is a footrest member,
22a indicates an upper plate, and 22b indicates a lower plate. Ward' t=-yo

Claims (8)

[Claims] (1) In a baby carriage in which a step is attached to be passed between a pair of front legs, the step is configured to surround the pair of front legs and to be able to slide up and down on the front legs. a pair of cylinders, and a first
a lever attached to the cylindrical body so as to be rotatable between a position and a second position, the cylindrical body having an engagement wall that can face and engage an outer surface of the front leg. The lever has a contact surface that can contact the outer surface of the front leg from a direction opposite to the engagement wall, and the contact surface has a relative distance from the center of rotation of the lever. a large diameter portion and a relatively small diameter portion, and when the lever is in a first position, the large diameter portion abuts the front leg, thereby causing the engagement wall and the front leg to engage. and when the lever is in the second position, the small diameter portion comes into contact with the front leg, thereby preventing the engagement wall from engaging with the front leg. A baby carriage that is released and allows the cylinder to slide. (2) The lever extends between the pair of cylindrical bodies and also functions as a footrest member on which the feet of an infant sitting on the seat of the baby carriage are placed. baby carriage. (3) An engaging protrusion is formed on the engaging wall, and a plurality of engaging recesses that can engage with the engaging protrusion are formed on the front leg facing the engaging wall. The baby carriage according to item 1 or 2 of the scope. (4) An engaging protrusion is formed on the engaging wall, and the front leg facing the engaging wall is provided with serrated teeth capable of engaging with the engaging protrusion. The baby carriage according to item 1 or 2. (5) The baby carriage according to claim 1 or 2, wherein the engaging wall is provided with a pressing engagement member that can press into engagement with the front legs. (6) A pressing projection is formed on the engaging wall, and a soft body capable of pressing and engaging with the pressing projection is attached to the front leg facing the engaging wall. or a baby carriage as described in paragraph 2. (7) The baby carriage according to any one of claims 1 to 6, wherein the footrest member on which the infant's feet are placed is configured such that its length in the front and back direction can be extended. (8) The footrest member includes an upper plate and a lower plate stacked on top of each other, and the front end portion of the upper plate is rotatably attached to the lower plate. The baby carriage mentioned.