JPH0357575Y2 - - 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 disassembly mechanism.

[Prior art]

By swinging the push rod of the stroller in either direction of the front or back of the seat, the push rod, which had been pushed by hand on the back side of the infant, can be moved to face the infant sitting in the seat. Baby carriages that are configured to be able to change their upright position or vice versa are already widely known.

However, with these known mechanisms, the operation for changing the standing position of the hand lever to either the front or back of the seat (the operation for changing the standing position) is complicated;
Up to now, no device has been devised that allows one-touch operation to change the upright position of the push lever, or to simultaneously release the assembled state of the baby carriage.

In order to deal with these problems, the inventor of the present application developed a locking mechanism for the hand lever in a folding baby carriage as shown in Utility Model Application No. 60-24429 (Utility Model Application No. 61-139859). However, even in this case, there is a lever formed in the center of the push rod for changing the standing position of the push rod, and an engaging part between the base of the push rod and the leg rod, which is the assembly and maintenance part of the stroller. Both operating levers for folding and folding the stroller were configured to be operated by "pushing" and "swinging" operating means in the same direction. When you operate the lever with the intention of changing the stroller, the stroller may be folded up unexpectedly, or conversely, when you operate the lever with the intention of folding the stroller, the standing position of the push rod may be unexpectedly changed. However, it still cannot be said to be perfect, as it has the disadvantage of unavoidable erroneous operations.

[Purpose of invention]

The present invention has been developed in view of the above-mentioned circumstances, and it is possible to change the upright position of the push rod with respect to the baby carriage body to the rear or front of the seat by a simple operation, and also to A hand push rod in a folding baby stroller that can easily shift to a folding operation by releasing the lock between the base of the hand push rod and the rear leg rod part that is maintained in an assembled state with a single touch without erroneous operation. The object of the present invention is to provide a mechanism for changing the standing position of a baby carriage and a mechanism for disassembling and disassembling a baby carriage.

[Structure of the idea]

In the present invention, a hollow central operation section with openings at appropriate intervals formed on the lower surface is formed in the center of the hand lever, and this central operation section has an upright section for changing the upright position of the hand lever. A change control lever and a disassembly control lever for releasing the assembled state of the baby carriage main body are each pivotably mounted, and one of the two control levers has a tip attached to it by the force of a spring. An operating knob, which is energized with a force that pushes the operating lever outward, is mounted with its tip protruding outside the opening;
Furthermore, an operating knob which is always biased inward by the force of a spring is attached to the tip of the other operating lever so that its tip protrudes outside the opening, and , the operating knob, which is attached to one of the operating levers by a force that constantly pushes it outward, has a stepped part formed at its base end that always comes into contact with the inner edge of the opening, and also pushes it in. The operating knob is configured so that it does not come into contact with the thick wall formed on one side of the opening when the opening is open, and the operating knob is always biased inward by the other operating lever so that its base end is always open. A hand push rod in a folding baby stroller is configured such that the push lever abuts a step formed on one side of the opening, and its base end does not come into contact with the step formed on the inner edge of the opening when the lever is pulled out. It is configured as a mechanism for changing the standing position and a mechanism for disassembling and disassembling the baby carriage.

〔Example〕

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

The baby carriage generally indicated 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 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 intermediate portion in the longitudinal direction of the rear leg lever 2 so as to be able to engage and disengage freely. , fixing hooks 41, 41 at a position slightly above this pivot portion.
By releasably engaging the hand lever 6
It is designed to prevent the standing position 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 an upright position behind the seat or in a position where the hand push rod 6 is in an 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, two operation levers can be freely swung: an upright change operation lever 8 that changes the upright position of the push rod 6 in the front-rear direction, and an unassembly operation lever 9 that releases the assembled state of the stroller body. It is made to protrude so that it can be moved.

The central operation part 7 has a hollow interior, and in this hollow part there are provided near the base end of a stand-up change operation lever 8 for changing the stand-up position of the push rod 6, and an assembly release operation for releasing the assembled state of the baby carriage main body. The levers 9 near their base ends are pivotally connected to each other so as to be swingable.

The end of the operating wire 81 or 91 is located at the base end of the upright change operation lever 8 that changes the upright position of the push rod 6 and at the base end of the disassembly operation lever 9 that releases the assembled state of the baby carriage body, respectively. installed.

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.

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

The two operating knobs 82 and 92 described above are mounted so that they can be slid a certain distance along the axial direction of the upright change operating lever 8 or the disassembly operating lever 9 to which they are mounted. An operation knob 82 attached to the operation lever 8 for changing the standing position of the hand lever 6 is operated by a spring 82' fitted inside.
The operation knob 92 mounted on the disassembly operation lever 9 is always biased with an inward force (force toward the base end of the shaft) due to the elastic force of the spring fitted inside. The resiliency of 92' constantly pushes it outward.

A step part 93 for preventing detachment is formed near the outer base end of the disassembly operation lever 9 for releasing the assembled state, and is higher than the gap formed in the opening 71 of the central operation part 7. This step 9
3 comes into contact with the inner edge of the opening 71 of the concentrated operation section 7, and the operation knob 92 is biased by the force of the spring 92' to push it toward the axial end (outward). This prevents it from coming off from the opening 71 of 7.

Reference numeral 72 denotes a thick walled portion formed on one side of the opening 71 of the central operating section 7, and the operating knob 92 attached to the tip of the disassembly operating lever 9 is pushed out of the opening 71 by the elastic force of a spring 92'. When the baby carriage is fully protruded (when the baby carriage is in an assembled state), the side surface of the stepped portion 93 formed at the base end of the operating knob 92 comes into contact with the operating knob 92 to prevent the operating knob 92 from malfunctioning.

In addition, an operation knob 8 is attached to an upright change operation lever 8 that changes the upright position of the push rod 6 in the front-back direction.
2 is a stepped portion 73 formed on the side surface of the base end of the operating knob 82 inside the opening 71 when the operation knob 82 is pushed inward by the elastic force of the spring 82'.
When the operating knob 82 is pulled out against the force of the spring 82', the base end of the operating knob 82 and the side surface of the stepped portion 73 are prevented from swinging unexpectedly. The engagement with the opening 71 is released so that the opening 71 can swing.

In the figure, 74 is a stopper formed at the center of the opening 71, and is designed to prevent the two operating knobs 82 and 92 from swinging toward the center more than necessary.

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

(1) If you want to change the upright position of the hand lever 6, press the operating knob 82 attached to the tip of the upright change operation lever 8 in the position illustrated in FIG. 2 against the force of the spring 82'. Pull it out toward the shaft end,
After releasing the contact between the side surface of the proximal end of the operating knob 82 and the stepped portion 73 formed in the opening 71, the operating knob 82 is swung in the direction shown by the dotted arrow in FIG.

If the operation knob 82 is swung to the position illustrated in FIG. The engagement with the child is released and the child can change to the desired standing position (back position or front position of the infant).

(2) When folding the assembled baby carriage,
Operation knob 9 in the position illustrated in FIGS. 2 and 3
2 against the force of the spring 92' (push in the direction shown by the solid arrow in FIG. Thick part 72 formed in
After releasing contact with the end surface of the control wire 92, if it is swung in the direction (lateral direction) shown by the solid line arrow in FIG. The engagement part (not shown) with 2 is released and the folding can be done easily.

[Effect of idea]

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

(1) Of the operation knobs attached to the tips of the stand-up change operation lever and the disassembly operation lever, one of the operation levers is constructed so that it can be pushed in and slid, and the operation lever is attached to the tip of the other operation lever. The stroller was configured to perform separate operations, ``push operation'' and ``pull out operation,'' so that the puller could be slid, so when trying to change the standing position of the push lever, the stroller could be accidentally folded. Another feature is that when folding the baby carriage, there is no need to worry about erroneously changing the upright position of the push rod, and the operation can be performed extremely accurately and safely.

(2) It is easy to operate with one hand to change the standing position of the push rod or to disassemble the stroller.

[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 parts when neither of the two operating knobs are opened, and Figure 3 is a partially cutaway plan view showing the main parts when one of the operating knobs is pulled out and slid. 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
...Stepped portion, 74...Stopper, 8...Elevation change operation lever, 9...Assembly release operation lever, 81,
91... Operating wire, 82, 92... Operating knob, 82', 92'... Spring, 93... Step portion.

Claims (1)

[Scope of utility model registration request] A hollow central operation part with openings at appropriate intervals formed on the lower surface is formed in the center of the hand lever, and the central operation part includes an upright change operation lever for changing the upright position of the hand lever; Disassembly operation levers for releasing the assembled state of the baby carriage body are respectively pivotably mounted, and the tip of one of the two operation levers is always operated by the force of a spring. An operating knob, which is biased with an outward force, is mounted with its tip protruding outside the opening, and the tip of the other operating lever is always pushed inward by the force of a spring. An operating knob that is energized with a retracting force is mounted so that its tip protrudes outside the opening, and one operating lever is always energized with a force that pushes outward. The operation knob is designed so that the stepped part formed at its base end always comes into contact with the inner edge of the opening, and when it is pushed in, it does not come into contact with the thick part formed on one side of the opening. The operating knob is configured such that the other operating lever always applies an inward force, and its base end always comes into contact with the step formed on one side of the opening, and when it is pulled out, the operating knob A mechanism for changing the upright position of a hand push rod in a folding baby carriage and a mechanism for disassembling the baby carriage, the mechanism being configured such that the base end does not come into contact with a step formed on the inner edge of an opening.