JPH0357574Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a folding baby carriage, and particularly relates to a mechanism for changing the upright position of a push rod and a mechanism for disassembling the baby carriage.

[Prior art]

By swinging the push lever of the stroller in either direction toward the front or back of the seat, the push lever, which had been erected on the rear side of the infant, will now face the infant placed on the seat. 2. Description of the Related Art Baby carriages that are configured so that the upright position of the baby carriage can be changed or vice versa are already widely known.

However, in these known baby carriages, the operation to change the standing position of the push lever to either the front or back of the seat (the operation for changing the standing position) is complicated, and the operation for changing the standing position of the hand push lever can be performed with a single touch operation. Up to now, no device has been devised that allows the stroller to be moved or disassembled at the same time as these operations.

In order to deal with these problems, the inventor of this application developed a folding mechanism for a stroller as shown in Utility Model Application No. 59-153808 (Utility Model Application No. 61-68967), and although the purpose was achieved to some extent, Even in this case, no consideration was given to a means of stably maintaining the lever of the release operation mechanism attached to the hand lever, so if you accidentally touch the operating lever while pushing the hand lever, the hand lever may unexpectedly fall forward. Alternatively, there is a drawback that there is always a fear of erroneous operation, such as the possibility of releasing the lock between the base of the push rod and the leg rod, which is the assembly and maintenance part of the baby carriage, and it is not yet perfect. I couldn't say it.

[Purpose of invention]

The present invention is intended to address the above-mentioned circumstances, and it is possible to change the upright position of the push rod relative to the baby carriage body to the rear position or the front position of the seat by a simple operation,
In addition, the hand push lever in a foldable baby stroller can be easily shifted to folding operation by releasing the lock between the base of the push lever and the rear leg lever that maintains the assembled state of the stroller with a single touch without any erroneous operation. The object of the present invention is to provide a mechanism for changing the upright position of a rod and a mechanism for assembling and disassembling a baby carriage.

[Structure of the idea]

In this invention, a hollow central operation part is formed in the center of the push rod, with openings at appropriate intervals formed on the lower surface and thick parts of appropriate widths at both ends of the opening. A standing position changing operating lever for changing the standing position of the hand push rod and an assembly release operating lever for releasing the assembled state of the baby carriage body are respectively pivotally attached to the part.
At the tips of the two operating levers, there is an operating knob that is constantly biased by a spring force to push the operating lever outward, and is slidable with its tips protruding outside the opening. The operation knob has a hole between the openings on the outside of the proximal end.
A detachment prevention step is formed to be higher than the opening, and this detachment prevention step comes into contact with the inside of the opening to exert the detachment prevention function. In a foldable baby stroller, the side surface of the stepped part for preventing separation comes into contact with a thick part formed in the opening to restrict the swinging when the part is protruding from the opening. It is configured as a mechanism for changing the upright position of the rod and a mechanism for assembling and disassembling the baby carriage.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The baby carriage generally designated by A includes a front leg rod 1, a rear leg rod 2, a backrest rod 3, an armrest rod 4, and several foldable horizontal rods 5...5 for connecting these in the width direction. , and a hand lever 6 which is pivotally connected so that the standing position can be freely changed in the front and rear directions of the seat.

The hand lever 6 has a proximal end portion of a rod bent so as to have a U-shape from the front, and is pivotally attached to the longitudinally intermediate portion of the rear leg lever 2 so as to be able to engage and disengage freely. At the same time, a fixing hook 41 is provided at a position slightly above this pivot portion.
By removably engaging the hand lever 41, the upright position of the hand lever 6 is prevented from being changed unexpectedly.

The above-mentioned fixing hooks 41, 41 are installed at locations where the respective states can be maintained when the hand lever 6 is in the upright position behind the seat or in the upright position in front of the seat. Of course, it can be formed as follows.

Reference numeral 7 denotes a centralized operation section formed in the center of the hand lever 6, and an opening 71 formed on the lower surface of the operation section 7.
From the opening 71, freely move the two operating levers, the standing position changing operating lever 8 that changes the standing position of the push rod 6 in the front-back direction, and the disassembling operating lever 9 that releases the assembled state of the baby carriage main body. It is made to protrude so that it can be swung.

The central operation part 7 has a hollow interior, and in this hollow part there is provided a portion near the base end of a standing position changing operation lever 8 for changing the standing position of the hand lever 6;
The vicinity of the base end of the disassembly operating lever 9 for disassembling the assembled state of the baby carriage main body is pivotally connected to each other, and the front half of the upright position changing operating lever 8 and the disassembling operating lever 9 are Opening 7
It is made to protrude outside of 1.

An end of an operating wire 81 or 91 is provided at the base end of the upright position change operation lever 8 for changing the upright position of the push rod 6 and at the base end of the disassembly operation lever 9 for releasing the assembled state of the baby carriage main body. Each part is attached.

The other ends of the operating wires 81 and 91 are
It is connected to a locking hook plate (not shown) attached near the tip of the push rod 6.

Operation knobs 82 and 92 are mounted at the tips of the upright position change operation lever 8 and the assembly/release operation lever 9, respectively.

These two operating knobs 82 and 92 are mounted so that they can slide a certain distance along the axial direction of the upright position changing operating lever 8 or the disassembly operating lever 9 to which they are mounted.

Reference numeral 83 denotes a spring inserted into the inside of the operating knob 82 mounted on the upright position change operating lever 8, and its elastic force always applies a force to push the operating knob 82 outward (in the direction of the shaft end). It is strong.

Although not shown, a spring (not shown) that performs the same function is fitted inside the operating knob 92 mounted on the disassembly operating lever 9, and the elastic force of this spring It is constantly urged by a force that pushes it outward.

Near the outer proximal ends of the operating knobs 82 and 92,
Steps 84 and 94 are formed in the opening 71 of the central operation section 7 to prevent detachment, respectively, and are higher than the gap formed in the opening 71 of the central operation section 7.
and 94 come into contact with the inside of the opening 71 of the central operating section 7, and the operating knobs 82 and 92 are biased with a force that pushes them in the axial end direction (outward) by the elastic force of the spring. This prevents it from separating from the central operation section 7.

72, 72 are thick parts formed on both sides of the opening 71 of the central operation section 7, and the elastic force of the spring 83 allows the operation knob 82 (or disassembly operation lever) attached to the tip of the upright position change operation lever 8 to be When the operating knob 92) attached to the tip of the operating knob 92) is pushed out completely outside the opening 71, the side surface of the step 93 formed at the base end of the operating knob 82 comes into contact with the operating knob 82, causing the operating knob 82 to malfunction. It is regulated to do.

In the figure, 73 is a stopper formed in the center of the opening 71 to prevent the two operating knobs 82 and 92 from swinging in opposite directions more than necessary within the opening 71.

The present invention based on the above embodiment works as follows.

(1) When it is desired to change the standing position of the push rod 6, the operation knob 82 attached to the tip of the standing position changing operation lever 8, which is in the position illustrated in FIG. The stepped portion 84 and opening 71 formed at the base end of the operating knob 82 are pressed in the direction shown by the solid line arrow in FIG. 2 (direction of the shaft base).
By releasing the contact with the thick part 72 formed at the end of the lever 8, the upright position change operation lever 8 can be easily swung in the direction shown by the dotted arrow in FIG.

(2) If the upright position change operation lever 8 including the operation knob 82 is swung by the above operation, the operation wire 8 connected to the upright position change operation lever 8
The engagement between the locking hook (not shown) at one end and the fixing hook 41 is released, and the standing direction can be easily changed to a desired direction (towards the back or front of the infant).

(3) The above change operation is the same when disassembling the baby carriage; in this case, the operation knob 92 attached to the tip of the disassembly lever 9 is pushed in against the elastic force of the spring. After that, if you perform the same operations as above, you can achieve exactly the same effect.

[Effect of idea]

The effects of the present invention configured as described above are as follows.

(1) A stepped portion is formed near the base end of the operating knob attached to the tip of the operating lever, and this stepped portion is configured to abut against the inner surface of the opening of the central operating portion, and the inside of the operating knob is A spring that is always biased outward (in the direction of the end of the shaft) is inserted into the handle, so that the operating knob can secure its mounting position by the elastic force of the spring. As long as you do not consciously push in the operating knob, there is no need to worry about erroneous operations such as the standing position being changed unexpectedly or the assembled state being released unexpectedly when pushing the hand lever unlike in the conventional structure. It has the characteristic of being safe.

(2) Also, the side surface of the detachment prevention step formed at the base end of the operating knob comes into contact with the thick wall formed at the end of the opening, thereby preventing it from swinging in the lateral direction. The swinging operation is performed by releasing the contact between the side surface of the step part and the thick part only when performing an operation to change the standing position or to release the assembled state. Because of this configuration, there is no possibility of erroneous operation.

(3) It is easy to operate with one hand to change the standing position of the push rod or to release the assembled state of the baby carriage.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 is a perspective view showing the state in which it is applied to a baby carriage, and Fig. 2 is a perspective view showing the state in which it is applied to a baby carriage.
The figure is a partially cutaway plan view showing the main part with the operating knob pushed outward by the elastic force of the spring, and Figure 3 shows the main part with one operating knob pushed inward. FIG. 3 is a partially cutaway plan view. A...Baby carriage, 1...front leg lever, 2...rear leg lever,
3...Backrest rod, 4...Armrest rod, 41...Hook, 5...Horizontal rod, 6...Hand lever, 7...Centralized operation section, 71...Opening, 72...Thickened part , 73
... Stopper, 8 ... Standing position change operation lever, 9 ... Assembly release operation lever, 81, 91 ...
Operation wire, 82, 92... Operation knob, 83...
...Spring, 94...Step.

Claims (1)

[Scope of utility model registration request] A hollow centralized operation part is formed in the center of the hand lever, with openings having appropriate intervals formed on the lower surface and thickened parts of appropriate widths at both ends of the opening,
A standing position changing operating lever for changing the standing position of the hand push rod and an assembly release operating lever for releasing the assembled state of the baby carriage body are respectively pivotally attached to this central operating section, and the above-mentioned two At the tip of each operating lever, there is an operating knob that is always biased by the force of a spring to push the operating lever outward. A stepped portion is formed on the outer side of the base end of the operating knob to prevent detachment and is higher than the distance between the openings.
This detachment prevention step portion exerts a detachment prevention function by coming into contact with the inside of the opening, and when the operation knob is protruding from the opening,
A mechanism for changing the upright position of a hand push lever in a folding baby stroller, which is configured so that the side surface of a stepped part for preventing separation comes into contact with a thick wall formed in an opening to restrict its swinging, and the baby stroller Disassembly mechanism.