JPH0546543Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a baby carriage, and in particular to a locking mechanism for a push rod that can be switched between two states: a back-push position and a face-to-face push position.

[Prior Art] An example of prior art that is of interest to this invention is a baby carriage disclosed in Japanese Utility Model Application Publication No. 105559/1983. The push rod of this baby carriage can be switched between two states: a back pushing position and a facing pushing position. In order to fix the push rod in the rear-pushing position or the face-pushing position, a rotary hook and a locking pin that can be engaged with the rotary hook are provided. The rotary hook is rotatably provided on a pair of push rods located on the left and right sides, and the locking pins are provided at two locations, one in the front part and one in the rear part of the baby carriage body. In order to rotate the rotary hook, each of the pair of push rods is provided with a knob. When attempting to release the lock state of the push rod, the rotary hook is rotated by operating a pair of knobs with both hands.

[Problems to be solved by the invention] In the baby carriage disclosed in Utility Model Application Publication No. 105559/1983, it is necessary to operate a pair of knobs with both hands in order to unlock the push rod. .

When considering operability, it is desirable that the operating means for releasing the locked state be at hand, and it is desirable that it can be operated with one hand. for that purpose,
It is necessary to have only one place to operate. Furthermore, in order to enable the operation means to be operated with one hand, it is necessary to devise a movement of the operation means.

Therefore, an object of this invention is to provide a locking mechanism for a push bar of a baby carriage, which allows the push bar of a baby carriage to be unlocked with a single operating means and with one hand.

[Means for Solving the Problems] The locking mechanism of the push rod of the baby carriage according to this invention extends in the vertical direction, and its lower end is rotatably connected to the main body of the baby carriage, thereby adjusting the position of the rear push rod. a pair of push rods that can be switched between two states: and a facing push position; a push rod connecting member that extends in the width direction of the baby carriage and connects the upper ends of the pair of push rods; and a central portion of each of the push rods. a pair of push rod lock members disposed displaceably between an engaged position and a non-engaged position; and a pair of push rod lock members that bias each push rod lock member to always bring the push rod lock members to the engaged position. a locking means provided on the main body of the baby carriage that engages with the push bar locking member in the engagement position to fix the push bar in the back push position or the face push position; disposed within the push rod and movable between a lower position and an upper position along the push rod, and engaged with the push rod locking member when in the upper position to bring the push rod locking member into the disengaged position; a pair of disengagement members, a pair of return means for always biasing each disengagement member to a downward position; an operation button, the center of which is rotatably attached to the center of the push rod connecting member through a common shaft, and one end of which is connected to the operation button through a combination of a pin and an elongated hole; A pair of rotating members; and a pair of wires extending along the push rod and the push rod connecting member and connecting the other ends of the pair of rotating members and the pair of disengagement members.

The common axis is located at the connection point between one rotating member and the operating button so that as the operating button moves upward, the pair of rotating members rotate in opposite directions and bring the pair of wires closer together. and a connection point between the other rotating member and the operation button.

When the operation button is in the lower position, the pair of disengagement members are in the lower position. When the operation button is in the upper position, the pair of disengagement members are in the upper position.

[Operation and effect of the invention] In normal use, the pair of push rod lock members are in the engagement position and engage with the locking means provided on the main body of the baby carriage to move the push rod to the rear pushing position. Or it is fixed in the facing position. The operation button is in the lower position.

Next, when the operation button is manually operated and brought to the upper position, the pair of engagement release members are pulled by the wire and move upward, releasing the engagement state between the push rod lock member and the locking means. , the push rod is unlocked. Therefore, it becomes possible to rotate the push rod.

According to this invention, the push rod of the baby carriage can be unlocked by operating a single operation button provided at the center of the push rod connecting member. Additionally, it becomes possible to unlock the push rod of the baby carriage with one hand.

[Example] Prior to describing the example, the correspondence between the elements described in claim 1 of the utility model registration and members of the example will be described.

The "push bar" corresponds to the push bars 10a and 10b shown in FIGS. 1 and 2.

The "push rod connecting member" corresponds to the push rod connecting member 11 shown in FIGS. 1 and 2.

"Push bar lock member" corresponds to the push bar lock member 15 shown in FIGS. 1 and 14.

The "biasing means" corresponds to the cam member 53, spring receiving member 58, and spring 59 shown in FIG.

The "locking means" corresponds to the locking pins 16 and 17 shown in FIGS. 1 and 14.

The "disengagement member" corresponds to the disengagement member 56 shown in FIG.

The "returning means" corresponds to the spring 60 shown in FIG.

The "operation buttons" are shown in Figures 2, 7 and 8.
This corresponds to the operation button 29 shown in the figure.

"Rotating member" corresponds to rotating members 30 and 31 shown in FIG.

"Wire" means the wire 4 shown in FIG.
Corresponds to 0 and 42.

FIGS. 1 and 3 are views of a baby carriage to which an embodiment of this invention is applied, viewed from the left side. FIG. 1 shows a state in which the push rod is fixed in the back-push position, and FIG. 3 shows a state in which the push rod is fixed in the face-to-face push position. Note that the right side of the baby carriage is
It appears symmetrical to that shown in Figures and Figure 3.

Although the configuration of the baby carriage itself is not particularly relevant to this invention, it will be briefly described for convenience. The basic framework of the baby carriage is one handrail frame 1 extending in the front-rear direction along both sides of the seat, and the upper end of the handrail frame 1 is rotatably connected to the handrail frame 1.
a pair of front legs 3 having front wheels 2 at their lower ends;
and a pair of rear legs 5 whose upper ends are rotatably connected to the handrail frame 1 and which have a rear wheel 4 at their lower ends; 7
a pair of reversing brackets 6 which are rotatably connected through the brackets 6 and are provided so as to be rotatable along the upper or lower half of the rear legs 5;
, a pair of handrail support rods 8 whose upper ends are rotatably connected to the rear end of the handrail frame 1 and whose lower ends are rotatably connected to the other end of the reversing bracket 6; It extends in the front-rear direction along both sides of the seat, and its front end is rotatably connected to the front leg 3,
A pair of seat support rods 9 are provided, the rear ends of which are rotatably connected to the other end of the reversing bracket 6. Reversing bracket 6 and handrail support rod 8
and the seat support rod 9 are connected to each other by a shaft 12.

When the baby carriage is in the open state, the reversing bracket 6 is fixed at a position along the upper half of the rear legs 5, thereby locking the baby carriage in the open state.
When the fixation to the reversing bracket 6 is released, the open state of the baby carriage is unlocked. That is,
It becomes possible to fold the baby carriage. With the folding operation of the baby carriage, the reversing bracket 6
When the stroller is rotated clockwise in the figure and the stroller is in a closed state, the reversing bracket 6 is positioned along the lower half of the rear leg 5 as shown by the imaginary line in FIG. This kind of folding operation was developed by Tokko Akira.
It is similar to the baby carriage disclosed in Japanese Patent No. 58-32065 or Japanese Patent Publication No. 62-13230. In the folded state of the stroller, the front wheels 2 and rear wheels 4 are close to each other and are located at the same height, allowing the stroller to stand on its own.

Referring to FIG. 3, the baby carriage includes a pair of backrest members 13 whose lower ends are rotatably connected to the rear part of the handrail frame 1, and which extend in the vertical direction, and whose lower ends are connected via a shaft 12. A pair of push rods 10a and 10b are rotatably connected to the other end of the reversing bracket 6, thereby making it possible to switch between two states: a back pushing position and a facing pushing position; The push rod connecting member 11 extends to connect the upper ends of the pair of push rods 10a and 10b.

The backrest member 13 is fixed at a desired inclination angle position by a suitable reclining adjustment means (not shown).

A pair of push rod lock members 15 are rotatably attached via a shaft 14 to the center portions of the pair of push rods 10a, 10b extending in the vertical direction. Correspondingly, locking pins 16 and 17 are provided at the rear and front portions of the handrail frame 1, respectively. 1st
In the state shown in the figure, the push rod locking member 15 engages with one of the locking pins 16, thereby fixing the pair of push rods 10a, 10b in the back pushing position. In the state shown in FIG.
By engaging with the other locking pin 17,
A pair of push rods 10a and 10b are fixed at opposing push positions.

FIG. 2 is a view of the connecting portion between the pair of push rods 10a, 10b and the push rod connecting member 11, viewed from the front side of the baby carriage. The push rod connecting member 11 has leg portions 11 that overlap the upper parts of the pair of push rods 10a and 10b.
a, 11b. This push rod connecting member 11
is provided so as to be movable in the vertical direction with respect to the pair of push rods 10a and 10b.

FIG. 4 shows one leg 11 of the push rod connecting member 11.
FIG. 3 is a cross-sectional view showing in detail the overlapping portion of the push rod 10a and the push rod 10a. As shown in the figure, the upper portion of the push rod 10a is fitted into the leg portion 11a of the push rod connecting member 11. The push rod 10a has a vertically long elongated hole 1.
9 is formed in the leg portion 11a, and the long hole 1 is formed in the leg portion 11a.
A shaft 18 inserted through the inside of the shaft 9 is fixedly provided. The push rod connecting member 11 is movable in the vertical direction to the extent that the shaft 18 can move within the elongated hole 19.

In order to fix the push rod connecting member 11 at an appropriate height, the push rod 10a is provided with a plurality of engagement holes 20, 21, 22 aligned in the vertical direction. Correspondingly, an operating lever 24 is rotatably attached to the leg portion 11a via a shaft 23. In FIG. 5, the operating lever 24 is shown alone. The operating lever 24 has a fitting piece 26 . Further, the operating lever 24 has a long hole 28 formed therein. The insertion piece 26 includes a shaft 27 located within the elongated hole 28 .

In the state shown in FIG. 4, the fitting piece 26 of the operating lever 24 fits into the engagement hole 22 of the push rod 10a, thereby inhibiting movement of the push rod connecting member 11. This fitted state is firmly maintained by the spring 25. When changing the height of the push rod connecting member 11, the operating lever 24 is rotated counterclockwise in the figure against the force of the spring 25. The state is shown in FIG. In the state shown in FIG. 6, the fitting piece 26 of the operating lever 24 is disengaged from the engagement hole 22. Therefore, the push rod connecting member 11 can be moved upward. Move the push rod connecting member 11 until it reaches the desired height,
After that, when you release your hand holding the operating lever 24, the operating lever 24 rotates clockwise in the figure due to the biasing force of the spring 25, and the fitting piece 26 moves into any of the engagement holes 20, 21, 22. The height of the push rod connecting member 11 is fixed.

FIG. 7 is a view of the central portion of the push rod connecting member 11 viewed from the front direction of the baby carriage, and FIG. 8 is a sectional view of that portion. At the center of the push rod connecting member 11, an operating means is provided for unlocking the push rods 10a, 10b. This will be explained more specifically.

The operation means includes an operation button 29 built into the center of the push rod connection member 11 so as to be movable downward, and the center of which is rotatably attached to the center of the push rod connection member 11 via a shaft 34. It includes a pair of rotating members 30 and 31, one end of which is connected to the operation button 29 through a combination of a pin and a long hole.

As clearly shown in FIG. 8, the operation button 29 has a vertically long elongated hole 33 formed therein. A shaft 32 inserted through the elongated hole 33 is fixedly provided in the center of the push rod connecting member 11. The operation button 29 can move up and down relative to the push rod connecting member 11 to the extent that the shaft 32 can move up and down relatively within the elongated hole 33 .

The rotating member 30 is shown alone in FIGS. 9-11. The pair of rotating members 30 and 31 each have pins 35 and 37 at one end thereof. These pins 35, 37 are received in elongated holes 36, 38 formed in the operating button 29, respectively. The elongated holes 36 and 38 have a long shape along the length direction of the push rod connecting member 11. In this way, the pair of rotating members 30 and 31 rotate in opposite directions as the operating button 29 moves up and down. For example, when the operation button 29 moves upward from the state shown in FIG.
0 rotates clockwise around the shaft 34, and the other rotating member 31 rotates counterclockwise around the shaft 34. The center hole 46 shown in FIGS. 9 and 11 is for inserting the shaft 34 shown in FIG. 8, and the center hole 46 shown in FIGS. The hole 47 shown in FIG. 8 is for inserting the pin 35 shown in FIG.

Although only partially shown in FIG. 8, the push rod connecting member 11 and the pair of push rods 10a, 10b
A pair of flexible tubes 39 and 41 are housed in a relaxed state. A portion of one flexible tube 39 is also shown in FIG. The upper end of one flexible tube 39 is fixed to the push rod connecting member 11 via the attachment member 43, and the lower end thereof is fixed to one of the push rods 10a.
The other flexible tube 41 has its upper end fixed to the push rod connecting member 11 via the mounting member 44,
Its lower end is fixed to the other push rod 10b.

Inside one flexible tube 39 is a wire 40.
It is inserted so that it can slide in a tight state. A tip pin 49 is attached to the tip of the wire 40, and this tip pin 49 is fitted into a hole 51 formed at the other end of the rotating member 31. Although not visible in FIG. 8, the other end of the wire 40 is connected to an engagement release member housed within the lower portion of the push rod 10a. The structure related to this disengagement member will be described later.

Similarly, a wire 42 is also slidably inserted into the other flexible tube 41 in a tight state. A tip pin 50 is attached to the tip of the wire 42, and this tip pin 50 is attached to the rotating member 30.
It is fitted into a hole 48 formed at the other end of. The other end of the wire 42 is also connected to an engagement release member housed within the lower portion of the push rod 10b. Wires 40 and 42 are both pulled downwardly at their other ends by a spring.
In other words, one rotating member 31 is always urged to rotate clockwise in FIG.
The other rotating member 30 is always urged to rotate counterclockwise. Therefore, when the operation button 29 is not operated, the operation button 29 is pressed downward by the rotating members 30 and 31 and is brought to the lowermost position, that is, the first position.

In addition to the first position described above, the operation button 29 can take an uppermost position, that is, a second position. FIG. 12 shows a state where the operation button 29 is being moved upward by manual operation. As the operation button 29 moves upward, one rotating member 31 rotates counterclockwise in the figure, thereby causing the wire 4 to rotate.
0 is pulled upward along the push rod 10a.
Similarly, the other rotating member 30 rotates clockwise in the figure, thereby moving the wire 42 to the push rod 1.
Pull upward along 0b.

FIG. 13 shows a state in which the operation button 29 is further moved upward from the state shown in FIG. 12. The state shown in FIG. 13 is the second position of the operation button 29. In this state, both wires 40 and 42 are pulled further upward along push rods 10a, 10b.

The flexible tubes 39, 41 through which the wires 40, 42 are inserted are housed in the push rod connecting member 11 and the push rods 10a, 10b in a relaxed state, as shown in FIG. The reason why the flexible tubes 39 and 41 are stored in such a relaxed state is that the height of the push rod connecting member 11 can be changed. Push rod connecting member 1
By changing the height of 1, flexible tubes 39, 41
Although the slack state of the flexible tube 3 changes,
The length of 9,41 itself is constant. Therefore, even if the height of the push rod connecting member 11 is changed, the tension on the wires 40, 42 is not affected at all.

FIG. 14 is a sectional view of the center portion of the push rod 10b located on the right side of the baby carriage, viewed from the inner side of the baby carriage. A shaft 14 passes through the center of the push rod 10b, and a push rod locking member 15, a cam member 53, and a fixing member 52 are attached using this shaft 14. The push rod locking member 15 is located on the side surface of the push rod 10b facing the inner surface of the baby carriage, and the cam member 53 and the fixing member 52
It is stored in 0b. The push rod lock member 15 and the cam member 53 rotate together with the shaft 14.

A fixing member 52 is shown in FIGS. 15 and 16. A penetrating hole 54 is formed in the lower portion of the fixing member 52. The shaft 14 passes through this hole 54.

Referring to FIG. 14, the lower end of the flexible tube 41 extending from the central portion of the push rod connecting member 11 is fixedly attached to the upper part of the fixing member 52 via a mounting member 55. An engagement release member 56 is housed in the push rod 10b so as to be movable up and down. This engagement release member 56 has a space portion 56a, as shown in FIGS. 17 and 18. The shaft 14 passing through the push rod 10b is located within the space 56a of the disengagement member 56.

As shown in FIG. 14, the lower end of the wire 42 passing through the flexible tube 41 is connected to a pin 57.
It is connected to the upper part of the engagement release member 56 via. A spring 60 is disposed between the disengagement member 56 and the fixing member 52, so that the disengagement member 5
6 is always urged to move downward. In other words, downward tension is always acting on the wire 42.

A spring receiving member 58 is placed on the cam member 53 which rotates together with the shaft 14 and the push rod locking member 15. Spring receiving member 58 is shown alone in FIG. 19, and cam member 53 is shown alone in FIG. 20. The cam member 53 has a flat portion 53a, and the bottom surface of the spring receiving member 58 is in contact with the flat portion 53a. As shown in FIG. 14, a spring 59 is disposed between the spring receiving member 58 and the engagement release member 56. Due to the action of the spring 59, the spring receiving member 58 is always urged downward. Note that the spring force of the spring 59 is smaller than the spring force of the spring 60 disposed between the disengagement member 56 and the fixing member 52.

From the state shown in FIG. 14, as shown in FIG.
5, the spring receiving member 58 moves upward against the biasing force of the spring 59.

In the state shown in FIG.
It is about to return to the stable state shown in the figure.

FIG. 22 shows the push rod locking member 15 being mounted on the side of the push rod 10b facing the inner surface of the baby carriage. The push rod locking member 15 has an engaging recess 15a that can engage with locking pins 16 and 17 provided at the rear and front parts of the handrail frame 1.
15b. In addition, the push rod lock member 15
The lower portion of the stroller has a substantially V-shape having a lower apex 15c as the apex and a front inclined surface 15d facing the front side of the baby carriage and a rear inclined face 15e facing the rear side of the baby carriage. As shown in FIG. 14, one engagement recess 15a of the push rod lock member 15
is the locking pin 1 provided at the rear part of the handrail frame 1
6, the pair of push rods 10a,
10b is fixed in a pushed back state. On the other hand, as shown in FIG.
The pair of push rods 10a and 10b are fixed in a pushing state facing each other.

Referring to FIGS. 17 and 18, the engagement release member 56 is formed with an action portion 61 that projects laterally. This acting portion 61 protrudes from the wall of the push rod 10b and projects onto the side surface of the push rod 10b facing toward the inner surface of the baby carriage. Referring to FIG. 22, the push rod 10b has a
A long hole 63 that is long in the vertical direction is formed. As the engagement release member 56 moves up and down, the action portion 61 moves up and down within the elongated hole 63.

The shape of the push rod lock member 15, the positional relationship between the push rod lock member 15 and the locking pins 16 and 17, etc. are selected so as to achieve the operation described below.

As shown in FIG. 8, when the operating button 29 is in the first position, the push rod locking member 15 and the disengaging member 56 are in the state shown in FIG. 14. That is, in that state, the push bar lock member 15 engages with the locking pin 16 or 17 provided on the handrail frame 1, and the push bar lock member 15 engages with the locking pin 16 or 17 provided on the handrail frame 1, and
is fixed in the back push position or the face push position.

As shown in FIG. 12, when the operation button 29 is moved upward by hand, the engagement release member 56
is pulled by the spring 42 and moves upward. As the engagement release member 56 moves upward, the action portion 61
also moves upward. The state in which the action portion 61 is moving upward is shown by an imaginary line in FIG. As shown in the figure, the action portion 61 of the disengagement member 56 comes into contact with the front inclined surface 15d of the push rod locking member 15.

Furthermore, as shown in FIG.
9 is moved upward to the second position, the disengagement member 56 further moves upward,
Correspondingly, the action portion 61 also moves further upward. This state is the state shown in FIG. As shown in the figure, when the operation button 29 is moved to the second position, the action portion 61 presses the front inclined surface 15d of the push rod locking member 15 from below,
As a result, the push rod locking member 15 is rotated counterclockwise in the figure. As a result, the engagement state between the engagement recess 15a of the push rod locking member 15 and the locking pin 16 is released, and the pair of push rods 10a, 10b
It becomes possible to rotate the .

In the state shown in FIG. 22, a pair of push rods 10a, 1
This corresponds to a state in which the button 0b is fixed at the face-to-face push position and the operation button 29 is moved upward. When the operating button 29 is moved to the second position from the state shown in FIG.
5e from below, thereby rotating the push rod locking member 15 clockwise in the figure. As a result, the engagement between the engagement recess 15b of the push rod locking member 15 and the locking pin 17 is released, making it possible to rotate the pair of pressers 10a and 10b.

4 to 6 show the structure of the part located on the left side of the baby carriage, and FIGS. 14 to 22 show the structure of the part located on the right side of the baby carriage. However, it must be understood that the structures of the parts located on the left and right sides of the baby carriage are basically the same.

As described above, in the baby carriage according to this invention, if the operation button 29 provided at the center of the push rod connecting member 11 is moved to the second position,
The lock on the pair of push rods 10a, 10b is released. As described above, since the push rod of the baby carriage is unlocked using a single operation button 29, the operation is very simple. Furthermore, since the operation button 29 is only provided at one location in the center of the push rod connecting member 11, it can be operated with one hand.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the left side of a baby carriage to which an embodiment of this invention is applied. FIG. 2 is a view of the connecting portion between the push rods 10a, 10b and the push rod connecting member 11 of the baby carriage shown in FIG. 1, viewed from the front side of the baby carriage. FIG. 3 is a side view showing the state after changing from the state shown in FIG. 1 to the facing pushing position of the push rod. Figure 4 shows the push rod connecting member 11.
It is a sectional view showing an overlapping part of leg part 11a and push rod 10a. FIG. 5 is a cross-sectional view showing the operating lever 24 shown in FIG. 4 alone. 6th
The figure is a sectional view showing a state after the operating lever 24 is rotated from the state shown in FIG. 4. 7th
The figure is a view of the central portion of the push rod connecting member 11 viewed from the front side of the baby carriage. FIG. 8 is a cross-sectional view of the portion shown in FIG. 7. 9 is a front view of the rotating member 30 shown in FIG. 8, FIG. 10 is a plan view thereof, and FIG. 11 is a front sectional view thereof. 12 and 13 are similar to FIG. 8, with FIG. 12 showing the operation button 29 being moved upward, and FIG. 13 showing the operation button 29 being moved upward. It shows the state brought to the position. FIG. 14 is a sectional view of the central portion of the push rod 10b. FIG. 15 is a front view of the fixing member 52 shown in FIG. 14, and FIG. 16 is a side view thereof. FIG. 17 is a front view of the disengagement member 56 shown in FIG. 14, and FIG. 18 is a side view thereof. FIG. 19 is a front view of the spring receiving member 58 shown in FIG. 14. FIG. 20 shows the cam member 53 shown in FIG.
FIG. FIG. 21 is a view similar to FIG. 14, showing the push rod locking member 15 in the disengaged position. FIG. 22 is a view of the portion to which the push rod lock member 15 is attached, viewed from the inner surface of the baby carriage. In the figure, 10a and 10b are push rods, 11 is a push rod connecting member, 15 is a push rod locking member, 15d is a front inclined surface, 15e is a rear inclined surface, 16, 17
29 is an operation button that is an element of the operation means; 30 and 31 are rotating members that are an element of the operation means; 39 is a flexible tube; 40 is a wire; 41 is a flexible tube,
42 is a wire, 56 is an engagement release member, 59, 60
The spring 61 indicates the action part.

Claims (1)

[Claims for Utility Model Registration] (1) Extends in the vertical direction, and its lower end is rotatably connected to the main body of the baby carriage, thereby being switchable between two states: a push-back position and a push-back position. a pair of push bars extending in the width direction of the baby carriage and connecting the upper ends of the pair of push bars; a pair of push bar lock members disposed so as to be movable between the push bar lock members; a pair of biasing means for biasing each of the push bar lock members so as to always bring the push bar lock members into an engaged position; a locking means that engages with the push bar locking member in the engagement position to fix the push bar in a back-to-back position or a face-to-face push position; a pair of disengagement members disposed so as to be displaceable between the push bar lock member and the upper position, and that engage the push bar lock member when in the upper position to bring the push bar lock member to the disengaged position; a pair of return means for biasing the uncoupling member to always bring it to the lower position; an operation button built into the center of the push rod connecting member so as to be movable up and down; a pair of rotating members rotatably attached to the center of the push rod connecting member, one end of which is connected to the operation button through a combination of a pin and a long hole; Extending along the
a pair of wires connecting the other end of the pair of rotating members and the pair of disengagement members, the pair of rotating members being reversed as the operation button moves upward; The common shaft connects a connection point between one rotating member and the operation button and a connection point between the other rotation member and the operation button so that the pair of wires are brought closer to each other by rotating in the same direction. and when the operation button is in the lower position, the pair of disengagement members are in the lower position, and when the operation button is in the upper position, the pair of engagement release members are in the lower position. The release member is a locking mechanism for the push rod of the baby carriage in the above-mentioned upper position. (2) The lower portion of each of the push rod lock members has a substantially V-shape having a front inclined surface facing the front side of the baby carriage and a rear side slope face facing the rear side of the baby carriage, and each of the above-mentioned engagements The release member has an operating portion that pushes up the front inclined surface or the rear inclined surface of the push rod lock member from below to displace the push rod lock member to the disengaged position when the release member is brought to the upper position. A locking mechanism for a push rod of a baby carriage as set forth in claim 1 of the utility model registration claim. (3) The push rod connecting member has leg portions that overlap the upper portions of the pair of push rods, and is provided so as to be movable in the vertical direction with respect to the pair of push rods. Range 1st or 2nd
The locking mechanism of the push rod of the baby carriage described in 2. (4) A pair of flexible tubes are stored in a relaxed state inside the push rod connecting member and the pair of push rods, and one flexible tube has its upper end connected to the push rod connecting member. The flexible tube is fixed to the member and has its lower end fixed to the one push rod, and the other flexible tube has its upper end fixed to the push rod connecting member and its lower end fixed to the other push rod. . The locking mechanism for a push rod of a baby carriage according to claim 3, wherein the wire is slidably inserted into the pair of flexible tubes in close contact with each other.