JPH0848254A - Push rod locking mechanism for baby carriage - Google Patents

Abstract

PURPOSE:To improve the operability of a collapsible baby carriage by locking the push rod of the baby carriage with the baby carriage collapsed. CONSTITUTION:In the push rod locking mechanism of a collapsisble baby carriage 1 for locking a push rod which can be turned frontward and backward and can be switched to two positions for pushing the baby carriage from the rear side and facing side by locking the push rod 10 to the lock pins 7 and 8 in the side section a handrail 5 by operating an operation button, a sliding member 20 is slidably provided on the push rod 10 and is constituted movable up and down interlocked with the operation of the operation button so that the push rod 10 can be switched to a lower locking position where the push rod 10 is locked to each of the lock pins 7 and 8 and an upper lock releasing position where the lock of the push rod 10 is released. An engage projection section (a section to be engaged) 21 is provided in the sliding member 20, and a cam member (engaging member) 30, which is engaged with the engage projection section 21 of the sliding member 20 at an engage position with the baby carriage 1 collapsed, is provide in the side section of the handrail 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push rod locking mechanism of a baby carriage for locking the push rod of the baby carriage in a folded state of the baby carriage.

[0002]

2. Description of the Related Art In a stroller having a push rod that can be opened and closed, as described in JP-A-1-106772, the push button is face-to-face with the push button being unlocked by operating an operating button at hand. It has been proposed that the switch can be switched between two positions of push and back push. In this type of baby carriage, locking pins for locking the push bar at the respective positions are provided on the side portions of the handrail.

[0003]

In the conventional baby carriage described above, there is a case where the push bar is disengaged from one of the locking pins and becomes free as a result of operating the operation button by mistake while the baby carriage is folded. At this time, the push rod stops at the other locking pin, but when the stroller is opened again, it is necessary to return the push rod to the original position, which makes the operation troublesome.

The present invention has been made in view of the above conventional circumstances, and an object of the present invention is to provide a push rod locking mechanism for a baby carriage which can improve operability by locking the push rod in a folded state of the baby carriage. .

[0005]

SUMMARY OF THE INVENTION According to the present invention, a front / rear direction rotation can be performed by operating an operation button to engage front and rear locking pins of a side portion of a handrail so as to have two positions, that is, face-to-face pressing and back-side pressing. A push rod locking mechanism for a baby carriage for locking a movable push rod in a folded state of the baby carriage, wherein a slide member is slidably provided on the push rod, and a lower locking position for locking each locking pin and The slide member is configured to be movable up and down in conjunction with the operation of the operation button so that the slide member can be moved up and down so as to be in the upper unlocked position where the locked state is released. An engaging member that engages with the engaged portion of the slide member in the locked position in the folded state of the baby carriage is provided on the handrail side portion.

[0006]

In the present invention, when switching the position of the push rod,
By operating the operation button, the slide member on the push rod is moved upward to the lock release position, and the engagement between the slide member and the lock pin is released. Next, the push rod is rotated to the other locking pin side to engage with the locking pin. This allows
The position of the push rod can be switched.

When the baby carriage is folded, the operation button is operated in a state where the slide member is locked to the locking pin to unlock the baby carriage in the open state. At the time of folding, the engaging member on the side of the handrail engages with the engaged portion of the slide member.

Therefore, even if the operating button is erroneously operated from this state, the upward movement of the slide member is restricted by the engagement member, and the engagement state between the slide member and the engagement pin is maintained. Will be locked when the stroller is folded. As a result, the stroller can be smoothly moved to the open state, and operability can be improved.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 7 are views for explaining a push rod locking mechanism of a baby carriage according to an embodiment of the present invention.
2 is an overall perspective view of the baby carriage having the push rod locking mechanism in an open state (deployed state). FIG. 1 shows a state where the push rod is in a rearward pushing position, and FIG. 2 shows a push rod in a facing pushing position. FIG. 3 is an overall perspective view of the stroller in a closed state (folded state), FIGS. 4 and 5 are partially enlarged views of the right side surfaces of FIGS. 1 and 3, and FIG. VI of 4
VI line sectional drawing, FIG. 7 is a VII-VII line sectional view of FIG.

As shown in FIGS. 1 to 3, the baby carriage 1 has a pair of left and right front leg frames 2 and rear leg frames 3 each having wheels attached to the lower ends thereof. It is configured to be foldable in the front-back direction.

A handrail guard 4 is provided above the leg frames 2 and 3. The handrail guard 4 is formed in a substantially U-shape in a plan view, and is composed of a pair of left and right handrails 5 arranged on both sides of the seat 17, and a body arc-shaped guard 6 arranged in front of the left and right handrails 5. Has been done.

A pair of left and right push rods 10 are provided on both sides of the handrail guard 4. The push rod 10 has its lower portion connected to the bracket 11 by a pin 16 and is rotatable in the front-rear direction, and can take two positions, a back pushing position (FIG. 1) and a face-to-face pushing position (FIG. 2). It is like this. Further, a rear side locking pin 7 and a front side locking pin 8 for locking the push rod 10 at the respective positions are attached to the side portions of the handrail 5.

Above the push rod 10, a substantially U-shaped operating rod 12 is provided for a babysitter to hold. Operating rod 1
In the center of 2, the operation button 13 and the changeover switch 14
An operation unit 15 having a is provided. By switching the changeover switch 14 and pressing the operation button 13, it is possible to unlock the open state of the baby carriage and switch the push rod between two positions.

A slide member 2 having a substantially cylindrical shape is provided on the push rod 10.
0 is provided slidably, and the slide member 2
0 is a lower locking position where the locking portion 20a (see FIGS. 6 and 7) locks to the locking pins 7 and 8, and an upper unlocking position where the locked state is released. And can be taken. Further, one end of a wire (not shown) interlocking with the operation button 13 is attached to the slide member 20, and when the operation button 13 is operated at the time of switching the position of the push rod 10, the slide member 20 which is in the locking position. Moves to the upper unlocking position, so that the locking portion 20a of the slide member 20 and the locking pins 7 and 8 are disengaged. Furthermore, in the slide member 20, FIG.
An engaging projection portion (engaged portion) 21 as shown in FIG.

On the other hand, a cam member (engaging member) 30 is provided at the tip of the rear side locking pin 7. Cam member 30
The engaging portion 31 rotates with the handrail 5 when the baby carriage is folded and engages with the engaging protrusion 21 of the slide member 20 in the locking position from above (see FIGS. 4 and 5). ). Accordingly, the upward movement of the slide member 20 is restricted, and the push rod 10 is locked in the folded state of the baby carriage 1. A sun shade 18 is attached above the backrest of the seat 17, and a shopping bag 19 is attached below the seat.

In the stroller 1 thus constructed,
In order to change the position of the push rod 10 when the baby carriage 1 is in the open state, first, the changeover switch 14 (FIG. 2) is changed over to the push rod changeover side, and the operation button 13 is pushed in. Then, the wire interlocking with the operation button 13 pulls up the slide member 20, whereby the engagement state between the engagement portion 20a of the slide member 20 and the engagement pin 7 or 8 is released. In addition,
In the open state of the baby carriage 1, the engagement protrusion 21 of the slide member 20 and the cam member 30 are in a positional relationship as shown in FIGS. 4 and 6, and when the slide member 20 moves upward, the cam member 30 and the cam member 30 move. There is no interference.

Next, the push rod 10 is rotated in the front-rear direction,
Back push position (Fig. 1) or face-to-face push position (Fig. 2)
Then, the corresponding locking pins 7 and 8 are engaged with the locking portion 20a of the slide member 20. As a result, the position of the push rod 10 is switched.

When the baby carriage 1 is folded, the push rod 10 is used.
With the rear locking pin 7 locked, the changeover switch 14 is changed over to the open state unlocking side, and the operation button 13 is pushed in. Then, the locked state by the bracket 11 is released, and the baby carriage 1 is folded (see FIG. 3).

When the baby carriage 1 is folded, the handrail 5 rotates upward (see FIG. 5), and the rear side locking pin 7 on its side portion.
The cam member 30 provided on the
The engagement portion 31 of the cam member 30 engages with the engagement protrusion 21 of the slide member 20 from above (see FIG. 7).

From this state, it is assumed that the changeover switch 14 is accidentally changed over to the push rod changeover side and the operation button 13 is pushed in. Then, the slide member 20 tries to move upward due to the operation of the wire.
The engaging protrusions 21 interfere with the engaging portions 31 of the cam member 30 to hinder the movement of the slide member 20. As a result, the locking portion 20a of the slide member 20 and the rear locking pin 7
The push rod 10 is locked in the folded state of the baby carriage 1 by maintaining the locked state with the push rod 10.

As described above, since the push rod 10 is always held in the locked state when the stroller 1 is in the folded state, when the stroller 1 is opened again, the shift to the open state can be smoothly performed. , Operability is improved.

[0022]

As described above, in the push rod lock mechanism of the baby carriage according to the present invention, the engaged member of the handrail side portion engages with the engaged portion of the slide member on the push rod in the folded state of the baby carriage. Therefore, even if the operation button is mistakenly operated, the locking state between the slide member and the locking pin can be maintained,
The push rod can be locked with the stroller folded. As a result, the stroller can be smoothly moved to the open state, and the operability can be improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a state in which a push rod is in a rearward pushing position in a baby carriage (opened state) in which a push rod locking mechanism according to an embodiment of the present invention is adopted.

FIG. 2 is an overall perspective view showing a state in which a push bar is in a position for facing in the baby carriage (opened state).

FIG. 3 is an overall perspective view of the baby carriage in a closed state (folded state).

FIG. 4 is a partially enlarged view of the right side surface of FIG.

5 is a partially enlarged view of the right side surface of FIG.

6 is a sectional view taken along line VI-VI of FIG.

7 is a sectional view taken along line VII-VII of FIG.

[Explanation of symbols]

 1 Baby carriage 5 Handrail 7 Rear locking pin 8 Front locking pin 10 Push bar 13 Operation button 14 Changeover switch 15 Operating part 20 Sliding member 20a Locking part 21 Engagement protrusion (engaged part) 30 Cam member (engagement) Element)

Claims (1)

[Claims] 1. A front side of a handrail side portion by operating an operation button,
A push rod locking mechanism of a baby carriage for locking a push rod rotatable in the front-rear direction, which can take two positions, that is, face-to-face pushing and back pushing by being locked to a rear locking pin, in the stroller. A slide member is slidably provided on the slide member, and the slide member is provided so that a lower locking position for locking the locking pins and an upper unlocking position for releasing the locked state can be taken. The slide member is configured to be movable up and down in conjunction with the operation of the operation button, and the slide member is provided with an engaged portion, which engages with the engaged portion of the slide member in the locking position in a folded state of the baby carriage. A push rod lock mechanism for a baby carriage, characterized in that an engaging member is provided on the handrail side portion.