JPH085387B2 - baby carriage - Google Patents

Description

TECHNICAL FIELD The present invention relates to a baby carriage that can be folded back and forth and left and right, and more particularly to a baby carriage that has a simple structure and is lightweight.

[Prior Art] A wide variety of baby carriages are currently on the market. The consumer selects a baby carriage that meets his or her taste and demand from these. The deciding factor for this choice depends on the individual, but one of them is the condition of “light weight”. That is, it can be said that the simple and lightweight structure is one factor for increasing the commercial value of the baby carriage.

The same applicant as the present application disclosed in Japanese Patent Application No. 61-72099 a foldable baby carriage capable of realizing weight reduction. In the baby carriage disclosed herein, the lower portion of the push rod is rotatably connected to the upper portion of the front leg, and the lower portion of the push rod substantially overlaps the upper portion of the front leg when the baby carriage is in the open state. ing. In addition, a pair of intersecting rods that intersect in an X shape and are rotatably connected at the intersecting portions have their upper ends rotatably connected to the push rods, and their lower ends rotatably to the rear legs. It is connected. This pram is
The number of members that make up the skeleton is small, the structure is simple,
This can greatly contribute to the realization of weight reduction.

[Problems to be Solved by the Invention] However, there is still room for improvement in this baby carriage. In the baby carriage disclosed in this prior application, a hook and a pair of link bars are provided to fix the open state. The hook is rotatably mounted on the front leg and inhibits the rotation of the push rod with respect to the front leg by engaging with an engagement pin provided on the push rod. The pair of link rods are provided near the intersection of the pair of cross rods, and engage with each other to fix the cross angle of the pair of cross rods. Since the hook and the pair of link rods are provided apart from each other, the operation for locking the open state of the baby carriage and the operation for releasing the lock are somewhat troublesome.

Therefore, an object of the present invention is to provide a baby carriage that has a simple structure and can be made lightweight, and can easily perform a locking operation and an unlocking operation in an open state.

[Means for Solving Problems] The present invention is a stroller that can be folded in the front-rear direction and the left-right direction, and includes the following.

a pair of front legs, each with front wheels on its lower part.

b. A pair of rear legs each having a rear wheel at its lower portion and rotatably connected to the front legs.

c. Each lower part thereof is rotatably connected to the upper part of the front leg so that the lower part of the stroller overlaps the upper part of the front leg in a substantially parallel manner when the baby carriage is in the open state. A pair of push rods.

d. A pair of connecting members adapted to be rotatable in a plane extending in the front-rear and vertical directions by the pair of push rods.

e. It intersects in an X shape and is rotatably connected at its intersection, and its upper end is rotatably connected to a pair of connecting members, and its lower end is rotatable to a pair of rear legs. A pair of cross bars connected to.

f. A widthwise connecting rod that is bendable upward at its central portion and has both ends rotatably connected to a pair of connecting members.

g. Open lock means for fixing the open condition of the baby carriage.

Further, the open state locking means includes the following.

a push rod locking mechanism that prohibits rotation of the push rod with respect to the front legs.

b. A retaining wall that is fixed to the push rod and abuts against the upper surface of the width direction connecting rod to prevent the width direction connecting rod from bending when the push rod is prohibited from rotating by the push rod locking mechanism.

[Operation] When the push rod of the baby carriage is prohibited from rotating by the push rod lock mechanism, the pressing wall abuts the upper surface of the width direction connecting rod to inhibit bending of the width direction connecting rod.
As a result, the crossing angle of the pair of crossing rods is also fixed. Thus, the baby carriage is maintained in the open state. On the other hand, if the lock state by the push rod lock mechanism is released and the push rod is rotated,
The pressing wall is separated from the upper surface of the width direction connecting rod, and thereby the bending of the width direction connecting rod is allowed, and accordingly, the locked state of the pair of crossing rods is also released.

[Embodiment] FIGS. 1 and 2 are side views showing an embodiment of the present invention. FIG. 1 shows an opened state of the baby carriage, and FIG. 2 shows a folded state. Although both figures show the left side of the stroller, the direction of the right side of the stroller appears symmetrically to that shown.

The baby carriage shown in the figure has a pair of front legs 2 each having a front wheel 1 at its lower portion, a pair of rear legs 4 each having a rear wheel 3 at its lower portion, a pair of seat support rods 5, and a pair of rear legs. Seat suspension rod 6, a pair of push rods 7, and front leg connecting members 8 as width direction connecting means for connecting between the left and right side surfaces of the baby carriage.
And a pair of cross bars that also act as widthwise connecting means
9, 10 and an open state lock means 11 for fixing the open state of the baby carriage.

The front leg 2 and the rear leg 4 are provided so as to intersect with each other, and at the intersecting portion, they are rotatably connected via a pin 12. The front portion of the seat support rod 5 is rotatably connected to the upper portion of the rear leg 4 via a pin 13.
The lower portion of the seat suspension rod 6 is rotatably connected to the rear portion of the seat support rod 5 via a pin 14.

The lower portion of the push rod 7 is rotatably connected to the upper portion of the front leg 2 via a connecting shaft 15. Further, in the opened state of the baby carriage, the lower portion of the push rod 7 and the upper portion of the front leg 2 overlap substantially in parallel. At the upper end of the push rod 7, there is provided a handle 16 to be grasped by a person who pushes the baby carriage. The push rod 7 and the seat suspension rod 6 are rotatably connected via a pin 17.

Although not clearly shown, the front leg connecting member 8 is rotatably connected to the pair of front legs 2 at both ends thereof, and is further bendable downward at its center portion.

FIG. 3 is a view of the pair of cross bars 9 and 10 shown in FIG. 1 as seen from the rear of the baby carriage. A pair of crossbars 9,
10 intersect in an X shape, and they are rotatably connected via a pin 18 at the intersection. This one
The pair of cross rods 9 and 10 connect the pair of push rods 7 and the pair of rear legs 4, and the detailed mounting manners thereof will be described later.

Referring to FIG. 1, the front leg 2 has a front leg sleeve 19 adapted to be slidable thereon. The seat support bar 5 also has a seat sleeve 20 adapted to be slidable thereon. The front leg sleeve 19 and the seat sleeve 20 are rotatably connected to each other. FIG. 4 is an enlarged sectional view showing a connecting portion between the front leg sleeve 19 and the seat sleeve 20. Referring to this figure, the front leg sleeve 19 slidably receives the front leg 2, and the seat sleeve 20 slidably receives the seat support rod 5. The seat sleeve 20 of the front leg sleeve 19 is rotatably connected via a pin 21.

Although not shown in FIGS. 1 and 2, in order to interlock the sliding movement of the seat sleeve 20 and the bending movement of the front leg connecting member 8, a space between the seat sleeve 20 and the front leg connecting member 8 is provided. A strut bar is provided.

Although FIG. 1 shows the stroller in an open state, open state locking means 11 is provided to fix this state. The open state locking means 11 prohibits the push rod 7 from rotating with respect to the front leg 2 and further fixes the crossing angle of the pair of crossing rods 9 and 10. The details of the open state locking means 11 will be described later.

A seat for supporting a child to be put on a baby carriage has its seat portion attached using a seat support rod 5 and its back portion attached using a seat suspension rod 6. In addition,
The seat back portion may be attached using the push rod 7.

In the illustrated embodiment, the front leg 2 and the seat support rod 5 are connected via a front leg sleeve 19 and a seat sleeve 20. However, since the seat suspension rod 6 supports the rear portion of the seat support rod 5, it is not always necessary to connect the front leg 2 and the seat support rod 5. However, as shown in the figure, if they are connected via the front leg sleeve 19 and the seat sleeve 20, a stronger structure can be obtained. Further, since the front leg sleeve 19 slidably receives the front leg 2 and the seat sleeve 20 slidably receives the seat support rod 5, the connection between the front leg 2 and the seat support rod 5 is formed by folding the baby carriage described later. It does not hinder the operation. If the seat sleeve 20 contacts the seat suspension rod 6 when the stroller is in the open state and the rear end of the slide is defined, the stroller will be in a more open state. Becomes

When the baby carriage is about to be folded, the locked state by the open state locking means 11 is released. In that state, the push rod 7 is pushed forward. Then, the push rod 7 rotates counterclockwise about the connecting shaft 15 in FIG. With the rotation of the push rod 7, the pin 14 connecting the seat support rod 5 and the seat suspension rod 6 moves rearward. At this time, the seat support rod 5 relatively slides in the seat sleeve 20. Further, the seat support rod 5 rotates about the connecting portion between the front leg sleeve 19 and the seat sleeve 20. As a result, the rear wheel 3 moves toward the front wheel 1.

During the above operation, the front leg sleeve 19 and the front leg 2 are slightly slid. In addition, with the folding operation, the left and right side surfaces of the baby carriage approach each other,
The widthwise interval is narrowed.

FIG. 2 shows a state in which the baby carriage shown in FIG. 1 is folded. As shown, front wheel 1 and rear wheel 3
It is located almost at the same height as and allows the baby carriage to be independent. In other words, the front leg 2, the rear leg 4, the seat support rod 5,
The seat suspension rod 6, the push rod 7, and the width-direction connecting means achieve the above-described operation, that is, when the stroller is folded, the rear wheel 3 moves toward the front wheel 1, and the stroller is folded. So that the rear wheel 3 and the front wheel 1 are located at substantially the same height when they are in
Its length and connecting position are chosen.

The details of the open state lock means 11, which should be called the essential part of the present invention, will be described below.

5 and 6 show side sectional views of the open state locking means 11. Open state locking means 11 shown
The slide member 22 includes a slide member 22, a spring 23, engaging protrusions 24 and engaging recesses 25 and 26 which are fitted to each other, and an engaging wall 27.

7 to 9 show the slide member 22 shown in FIG. 5 alone, and FIG. 14 shows a cross-sectional side view of the connecting portion between the slide member 22 and the front leg 2. It is shown. With reference to these drawings, the slide member 22 has a first position on the upper end portion of the front leg 2 which is relatively upward along the lengthwise direction, and a second position which is relatively downward on the upper end portion. It is provided so that it can slide between and. This will be specifically described. A spring case 29 is fixedly mounted inside the upper end of the front leg 2 via a pin 28. The spring case 29 and the front leg 2 are provided with a long hole 30 which is long in the vertical direction. A pin 31 is arranged so as to pass through the elongated hole 30, and the slide member 22 is attached to the pin 31.
Is fixedly installed. The through hole 32 shown in FIGS. 7 and 9 is for inserting the pin 31.
In this way, the slide member 22 can slide in the vertical direction by substantially the same amount as the range in which the pin 31 can move in the long hole 30.

As shown in FIG. 14, a spring receiving member 33 is fixedly attached to the pin 31 inside the front leg 2. The spring receiving member 33 is housed in the spring case 29. The spring 23 is arranged between the bottom wall of the spring case 29 and the spring receiving member 33. The spring 23 urges the spring receiving member 33 so as to always move it upward. That is, the spring 23 urges the slide member 22 so as to return the slide member 22 to the first position located relatively above.

With reference to FIGS. 7 to 9, the slide member 22 has a columnar portion 34 formed so as to extend along the front leg 2 that is inserted through the slide member 22. An engaging protrusion 24 is formed on the upper end portion. Further, as well shown in FIG. 5, the slide member 22 is formed with an engagement wall 27 capable of engaging with the lower end portion of the push rod 7. A guide wall 36 is also formed so as to be continuous with the engagement wall 27. Further, as shown in FIG. 8, a pair of inclined surfaces 37 whose intervals are gradually narrowed are formed on the opposing walls that receive the lower end of the push rod 7. The operation of the engagement wall 27, the guide wall 36 and the inclined surface 37 will be described later.

Referring to FIGS. 5 and 6, a push rod sleeve 38 surrounding the push rod 7 is fixedly attached to the lower end portion of the push rod 7 via pins 39 and 40. This push rod sleeve 38
Is shown in FIGS. 10-13, and also push rod sleeve 38
A side sectional view of the connecting portion between the push rod 7 and the push rod 7 is shown in FIG. With reference to these drawings, the push rod sleeve 38 has a pair of protruding walls 41 projecting forward, and this protruding wall 41 has the connecting shaft 15 shown in FIGS. 5 and 6. It is rotatably connected to the upper end of the front leg 2 via. That is, the push rod 7
Rotates with the connecting shaft 15 as the rotation axis. The through holes 42 and 43 shown in FIG.
It is for inserting. Further, the connecting shaft 15 is
The through hole 44 shown in FIG. 10 and the through hole 45 shown in FIG. 14 are inserted.

The front end face of the overhanging wall 41 of the push rod sleeve 38 and the slide member 22.
The columnar portion 34 has a positional relationship of facing each other when the stroller is opened. Then, on the front end surface of the overhanging wall 41, engagement concave portions 25 and 26 which can be fitted with the engagement convex portions 24 of the slide member 22 are formed.

As shown in FIG. 5, when the slide member 22 is at the relatively upper first position, the engaging protrusion 24 of the slide member 22 fits into the upper engaging recess 25. On the other hand, as shown in FIG. 6, when the slide member 22 is in the second position, which is located relatively downward, the engaging projection 24 is fitted in the engaging recess 26 located below.

Next, referring to FIGS. 5 and 6, the front leg 2 and the push rod 7 will be described.
The related operation between and will be described.

When the stroller is in the open state, the upper end of the front leg 2 and the push rod 7
Are aligned in parallel with the bottom edge of the stack. When the slide member 22 is in the first position shown in FIG. 5, the engagement wall 27 engages with the lower end portion of the push rod 7 to prohibit the push rod 7 from rotating. This locked state is firmly maintained by the action of the spring 23. In addition, the engagement protrusion 24 and the engagement recess
The fitting with 25 also effectively works to maintain the locked state by the engagement wall 27 firmly.

Next, when the baby carriage is about to be folded, the slide member 22 is slid to the second position shown in FIG. The columnar section 34 once flexes outward in response to the movement of the slide member 22, and then the engaging convex section 24 is fitted into the engaging concave section 26 of the push rod sleeve 38. Although the spring 23 acts to move the slide member 22 upward, the engaging protrusion 24 and the engaging recess 26
Mating with prevents this movement. Slide member 22 is second
In the position of, the engagement between the engagement wall 27 and the lower end of the push rod 7 is released. Therefore, when the push rod 7 is pushed forward, the push rod sleeve 38 rotates together with the push rod 7 in the counterclockwise direction in FIG. As a result, the fitting state of the engaging projection 24 of the slide member 22 and the engaging recess 26 of the push rod sleeve 38 is released, and the slide member 22 is moved to the first position shown in FIG. Return.

Next, the operation when the baby carriage shifts from the folded state to the open state will be described. When the push rod 7 is rotated to realize the opened state of the baby carriage, first, the lower end portion of the push rod 7 comes into contact with the guide wall 36 of the slide member 22 as shown in FIG. When the push rod 7 is further rotated in the clockwise direction from that state, the guide wall 36 is pressed downward by the lower end portion of the push rod 7, whereby the slide member 22 slides downward. Then, when the lower end of the push rod 7 and the upper end of the front leg 2 are aligned substantially parallel to each other, the slide member 22 slides upward by the action of the spring 23, and the state shown in FIG. 5 is obtained. Thus, due to the presence of the guide wall 36, no special operation is required to bring the open locking means 11 into the locked state. However, the guide wall 36 may not be provided if the operability can be slightly deteriorated. In that case,
Immediately before the upper end of the front leg 2 and the lower end of the push rod 7 are aligned substantially parallel to each other, it is necessary to slide the slide member 22 downward.

The inclined surface 37 formed on the slide member 22 is
In FIG. 16, when the push rod 7 is rotated clockwise, it acts so as to smoothly guide the movement of the push rod 7.

FIG. 17 is a view of the structure of the connecting portion between the pair of push rods 7 and the pair of cross rods 9 and 10 as viewed from above. It should be noted that, in this figure, the illustration of parts not related to the description is omitted.
Further, FIG. 18 is a view of the portion shown in FIG. 17 as viewed from the rear.

Referring to FIG. 3 together with FIG. 17 and FIG. 18, connecting members 46 each having an L shape are connected to the inner side surfaces of the pair of push rod sleeves 38 located on the left and right sides via the pins 40. Installed. The connecting member 46 is adapted to be rotatable in a plane extending in the front-rear and up-down directions. One cross bar 9
The upper end of the is rotatably connected to a connecting member 46 located on the right side surface of the baby carriage via a pin 48. The upper end of the other cross bar 10 is rotatably connected to a connecting member 46 located on the left side surface of the baby carriage via a pin 47. Further, a width direction connecting rod 49 extending in the width direction of the baby carriage is connected between the pair of connecting members 46 via pins 47 and 48. As is apparent from FIG. 3, the width direction connecting rod 49 includes a central member 49a, a left member 49b and a right member 49c.
It is composed of three members. A left end of the left member 49b is rotatably connected to the connecting member 46 via a pin 47, and a right end of the left member 49b is rotatably connected to the central member 49a via a pin 50. The right end of the right member 49c is rotatably connected to the connecting member 46 via the pin 48, and the left end thereof is rotatably connected to the central member 49a via the pin 51. That is, the width direction connecting rod 49 can be bent upward at the central portion thereof as shown by arrows A and B in FIG.

FIG. 19 shows the central member 49a of the width direction connecting rod 49 and the right member 4a.
The connecting portion with 9c is enlarged and shown. As shown in the figure, the center member 49a is formed with a contact wall 52 that abuts on the upper surface of the right member 49c and prohibits downward bending. When the baby carriage is in the open state, the contact wall 52 is in contact with the upper surface portion of the right member 49c. A similar structure is adopted between the left member 49b and the central member 49a. In FIG. 19, the position where the central member 49a and the right member 49c are slightly bent upward is shown by an imaginary line.

Referring to FIGS. 1 and 3, the pair of rear legs 4 includes:
The fixtures 56 are rotatably attached via the pins 63, respectively. Between the pair of fittings 56, a rear leg connecting member
53 is connected via pins 57 and 58. As shown in FIG. 3, the rear leg connecting member 53 is composed of a left link rod 53a and a right link rod 53b. The left link rod 53a is rotatably connected to a fitting 56 located on the left side surface of the baby carriage via a pin 57. The right link rod 53b is rotatably connected to a fixture 56 located on the right side surface of the baby carriage via a pin 58. And, the left link rod 53a and the right link rod 53b,
It is rotatably connected via a pin 54. Right link bar
A contact portion 55 that abuts the upper surface of the left link rod 53a is formed on the 53b, and the contact portion 55 prevents the connecting member 53 from bending downward. However, the rear leg connecting member 53
Can be bent upward from the state shown in FIG.

As shown in FIG. 3, the lower end of one cross bar 9 is rotatably connected to the left link bar 53a through a pin 59, and the other cross bar 10 is right link bar 53b through a pin 60. Is rotatably connected to.

Referring to FIG. 11 and FIG. 12 together with FIG. 17 and FIG. 18, a pressing wall 61 extending inward is fixedly provided on the inner side surface of the push rod sleeve 38. Retaining wall
The shape of 61 is apparent with reference to FIGS. 11 to 13. FIG. 13 is a sectional view taken along the line XIII-XIII in FIG. As shown in FIG. 13, the holding wall 61 has a hanging portion 62 protruding downward.

FIG. 20 shows a view taken along the line XX-XX in FIG. With reference to FIG. 20 and FIG. 17 and FIG. 18, the pressing wall 61 is prevented from rotating when the baby carriage is in the open state, that is, the push rod 7 is prevented from rotating by the engaging wall 27 of the slide member 22. When the width direction connecting rod 49 is in contact with the upper surface of the width direction connecting rod 49, the bending of the width direction connecting rod 49 is prohibited. Referring to FIG. 3, since the bending of the width direction connecting rod 49 is prohibited, the intersection angle of the pair of intersection rods 9 and 10 is fixed,
Folding of the stroller in the width direction is prohibited. Also, the first
As is apparent from the drawings, the angle of intersection of the front leg 2 and the rear leg 4 is fixed by fixing the angle of intersection of the pair of cross rods 9 and 10. In this way, the baby carriage has two front legs.
By simply engaging the slide member 22 provided above and the lower end portion of the push rod 7, the open state is stably maintained.

When you try to fold the baby carriage, slide it
The 22 may be slid to the second position shown in FIG. If the push rod 7 is rotated forward from this state, the 21st
As shown in the figure, the pressing wall 61 is separated from the upper surface of the width direction connecting rod 49. Therefore, the widthwise connecting rod 49 is allowed to bend upward, and accordingly, the pair of cross rods 9 and 10 are also allowed to rotate. Thus, the baby carriage is folded back and forth and left and right by rotating the push rod 9,
The state shown in FIG. 2 is obtained.

In addition, the illustrated embodiment is merely one example of the embodiment of the present invention. Therefore, various modifications and variations are possible within the equivalent scope of the present invention. For example, the third
It is not always necessary to provide the rear leg connecting member 53 shown in the figure. In that case, the pair of cross bars 9, 10 would be pivotally connected to the pair of rear legs 4 via, for example, spherical bearings or the like. However, by providing the rear leg connecting member 53, the structure of the baby carriage in the open state becomes stronger.

Further, in the above-described embodiment, as the push rod lock mechanism for inhibiting the rotation of the push rod 7 with respect to the front leg 2, the pair of slide members 22, the pair of springs 23, and the concavo-convex portions 24, 2 that fit with each other.
6 and a pair of engagement walls 27 were used. However, different push bar lock mechanisms may be used. For example, as in the baby carriage disclosed in Japanese Patent Application No. 61-72099, the rotation of the push rod may be prohibited by using the hook and the engaging pin.

[Effects of the Invention] As described above, according to the present invention, if the rotation of the push rod with respect to the front leg is prohibited, the crossing angle of the pair of crossing rods is automatically fixed. Therefore, the locking operation in the open state of the baby carriage is performed. You can easily perform operations such as unlocking and unlocking.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention. FIG. 2 is a side view showing a folded state of the baby carriage shown in FIG. FIG. 3 is a view of the structure of the portion related to the pair of cross bars 9 and 10 shown in FIG. 1 as seen from the rear of the baby carriage. FIG. 4 is an enlarged sectional view showing a connecting portion between the front leg sleeve 19 and the seat sleeve 20 shown in FIG. FIG. 5 is a sectional view showing the structure of the connecting portion between the front leg 2 and the push rod 7. FIG. 6 is a diagram showing a state after the slide member 22 is moved downward from the state shown in FIG. FIG. 7 is a side view of the slide member 22 shown in FIGS. 5 and 6. FIG. 8 is a plan view of the slide member 22. FIG. 9 is a side sectional view of the slide member 22. FIG. 10 is a side view of the push rod sleeve 38 shown in FIGS. 5 and 6. FIG. 11 is a front view of the push rod sleeve 38. FIG. 12 is a plan view of the push rod sleeve 38. FIG. 13 is a sectional view taken along the line XIII-XIII in FIG. FIG. 14 is a side sectional view of a connecting portion between the slide member 22 and the front leg 2. FIG. 15 is a side sectional view of a connecting portion between the push rod sleeve 38 and the push rod 7. FIG. 16 is a side sectional view showing a structure of a connecting portion between the front leg 2 and the push rod 7, showing a state where the lower end portion of the push rod 7 is in contact with the guide wall 36 of the slide member 22. FIG. 17 is a view of the structure of the connecting portion between the push rod 7 and the cross rod 10 as seen from above. FIG. 18 is a view of the structure shown in FIG. 17 as seen from the back of the baby carriage. FIG. 19 is an enlarged view showing a connecting portion between the central member 49a and the rightward member 49c of the lateral connecting rod 49 shown in FIG. FIG. 20 is a view taken along the line XX-XX in FIG. First
FIG. 21 is a view showing a state in which the push rod sleeve 38 is slightly rotated forward from the state shown in FIG. In the drawing, 2 is a front leg, 4 is a rear leg, 7 is a push rod, 9 is a cross rod, 10 is a cross rod, 11 is an open state locking means, 22 is a slide member, 23 is a spring, 24 is an engaging convex portion, 25 Is an engaging recess, 26 is an engaging recess, 27 is an engaging wall, 46 is a connecting member, 49 is a width direction connecting rod, and 61 is a retaining wall.

Claims (4)

[Claims] 1. A baby carriage that can be folded in the front-rear direction and the left-right direction, and has a pair of front legs each having a front wheel at its lower portion, and a rear wheel at each lower portion thereof, and is rotatable about the front leg. And a pair of rear legs connected to each other, the lower portions of which are connected to the upper portions of the front legs so as to be rotatable in the front-rear direction, and when the baby carriage is in the open state, the lower portions of the front legs are connected to each other. A pair of push rods which are arranged to overlap each other substantially parallel to the upper part, and a pair of connecting members which are attached to the pair of push rods so as to be rotatable in a plane extending in the front-rear and vertical directions, and intersect in an X shape. 1 rotatably connected at its intersection, its upper end rotatably connected to the pair of connecting members, and its lower end rotatably connected to the pair of rear legs. A pair of intersecting bars and the upper part is bent upward Has been the ability,
And a width direction connecting rod whose both ends are rotatably connected to the pair of connecting members, and an open state locking means for fixing the open state of the baby carriage, the open state locking means A push rod lock mechanism for prohibiting rotation of the push rod with respect to the front leg; and an upper surface of the width direction connecting rod fixedly provided on the push rod when the push rod is prohibited from rotating by the push rod lock mechanism. A baby carriage provided with a pressing wall that abuts against the width direction connecting bar to prevent bending of the connecting rod in the width direction. 2. The baby carriage according to claim 1, wherein the widthwise connecting rod and the pair of intersecting rods are connected to the pair of connecting members by the same pin. 3. The push rod lock mechanism includes a first position, which is located relatively above in the lengthwise direction, and a second position, which is located below the upper end of the front leg.
A pair of slide members provided so as to be slidable between the slide members, and a pair of springs biasing the slide members to return to the first position, and the slide members. An uneven portion that is formed in a portion facing the push rod and that is fitted so as to prohibit movement of the slide member when the slide member is at least in the second position, and is fixed to the slide member. , When the slide member is in the first position, engages with the lower end of the push rod to inhibit rotation of the push rod, and when the slide member is in the second position, engages with the push rod. The stroller according to claim 1 or 2, further comprising a pair of engagement walls that are released to allow the rotation of the push rod. 4. The slide member is formed with a guide wall which is pressed downward by the lower end portion of the push rod when the baby carriage shifts from the folded state to the open state, thereby sliding the slide member downward. The stroller according to claim 3, which is provided.