JP2794123B2 - baby carriage - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a baby carriage, and more particularly, to an operation mechanism that performs a desired operation by a predetermined operation, and a lock device that can inhibit the operation of the operation mechanism. And a stroller provided with

[Prior Art] As a related art that is interesting to the present invention, Japanese Patent Publication No. Sho 58
There is a baby carriage disclosed in Japanese Patent Publication No. 32065 and Japanese Patent Publication No. 62-13230. The stroller disclosed in these publications is
It has a pair of reversing brackets. Each of the pair of reversing brackets is rotatably connected at one end to a center portion of the pair of rear legs, so that the brackets can roll along the upper half or the lower half of the rear legs. It is provided in. When the stroller is open, the open state of the stroller is locked by fixing the reversing bracket at a position along the upper half of the rear leg.

In order to fix the reversing bracket, a sleeve which can be engaged with the reversing bracket is provided. Also, a pair of operation levers are provided on a pair of push rods located on the left and right side surfaces of the baby carriage. The operating lever and the sleeve are connected by a wire. Therefore, when the sleeve is moved by operating a pair of operation levers provided on the left and right push rods, the engagement between the sleeve and the reversing bracket is released, and the reversing bracket is in a state in which it can roll. Become. That is,
The lock of the stroller in the open state is released.

Further, another example of the prior art that is of interest to the present invention is a baby carriage disclosed in Japanese Utility Model Laid-Open No. 105559/1985. The push rod of this stroller can be switched between two states, that is, a back-side push position and a facing-side push position. In order to fix the push rod at the back pushing position or the facing pushing position, a rotating hook and a locking pin capable of engaging with the rotating hook are provided. The rotating hooks are rotatably provided on a pair of push rods located on the left and right sides, and the locking pins are provided at two positions, a front portion and a rear portion of the stroller main body. And to rotate the rotating hook,
Each of the pair of push rods is provided with a knob. When the lock state of the push rod is to be released, the pair of clogs is operated with both hands to rotate the rotary hook.

[Problems to be Solved by the Invention] In the stroller disclosed in Japanese Patent Publication No. 58-32065 and Japanese Patent Publication No. 62-13230, a pair of operating levers is required to unlock the stroller in an open state. Needs to be rotated upward. When trying to lock the stroller in the open state, it is necessary to rotate the pair of operation levers downward to return to the original position.

When the baby carriage is changed from the folded state to the open state, the pair of operation levers is brought to the upper position. When the stroller is completely open, the pair of operating levers is pivoted downward, thereby locking the stroller in the open state. However, due to carelessness, 1
In some cases, the operator forgets to turn the pair of operation levers downward. In that case, the open state of the stroller is not locked. If the baby carriage is moved and operated in this state, the baby carriage may suddenly start to fold when a certain impact force is applied to the baby carriage, which is dangerous.

In the baby carriage disclosed in Japanese Utility Model Laid-Open No. 60-105559, it is necessary to operate a pair of knobs in order to unlock the push rod. For example, consider a case in which the push rod is switched from a back-side pushing state to a face-to-face pushing state. Prior to the start of the operation, the push rod is locked in a state where the back is pushed. In order to release the lock, a pair of knobs are rotated. Next, rotate the push rod,
Bring to face-to-face push position. Finally, when the push bar is brought to the face-to-face push position, the pair of knobs are rotated to fix the position of the push bar.

When performing the above-described operation, the user may inadvertently forget to rotate the pair of knobs after bringing the push rod to the face-to-face pressing position. In that case, the push rod is brought to the face-to-face push position but is not locked.
If the stroller is moved and operated in this state, the push rod suddenly rotates, which is dangerous.

Therefore, an object of the present invention is to provide a baby carriage that can prevent forgetting to lock the operation mechanism.

[Means for Solving the Problems] A baby carriage according to the present invention includes an operation mechanism that performs a desired operation by a predetermined operation, and first and second members that are relatively movably provided. ing. The operation of the operation mechanism is prohibited when the first and second members are in the engagement relationship with each other, and the operation of the operation mechanism is allowed when the first and second members are in the non-engagement relationship.

In such a stroller, the present invention is characterized by including a signal generating device. The signal generator includes a switch that is electrically turned on when the first and second members are switched from one of the engagement relationship and the non-engagement relationship to the other relationship, When the switch is turned on, a signal is generated that is recognized by human hearing or vision.

[Effects of the Invention] It is assumed that the switch is in the off state when the first and second members are in the engagement relationship. When the first and second members are in the engagement relationship, the operation of the operation mechanism is prohibited. In other words, the operating mechanism is locked. When the first and second members are disengaged to perform the operation of the operation mechanism, the switch is turned on. When the first and second members are in the disengaged relationship, the operation of the operation mechanism is permitted. In this state, the signal generator generates a signal that is recognized by human hearing or vision. For example, assume that the signal generating device is generating sound. A person who moves the stroller recognizes that the lock on the operation mechanism of the stroller has been released by hearing the sound generated from the signal generator.
Therefore, a person who moves the stroller does not forget to lock the operation mechanism. In one form of use, sound is inaudible when the operating mechanism is locked. In this way, it can be recognized that the locked state is established.

[Embodiment] FIGS. 1 and 3 are views of an embodiment of the present invention as viewed from the left side, and FIG. 1 shows a state in which a push rod is fixed to a position of pushing a back surface. Indicates a state in which the push bar is fixed at the position of the facing push. Note that the right side of the baby carriage appears symmetrically to that shown in FIGS. 1 and 3.

The stroller has, as a basic framework, a pair of handrail frames 1 extending in the front-rear direction along both side surfaces of the seat, and an upper end thereof is rotatably connected to the handrail frame 1, and a front wheel is attached to the lower end of the stroller. A pair of front legs 3 having a handrail frame 1
A pair of rear legs 5 having a rear wheel 4 at the lower end thereof, and one end rotatably connected via a shaft 7 at the center of the rear leg 5. Thereby, a pair of reversing brackets 6 rotatably provided along the upper half or the lower half of the rear leg 5, and the upper ends thereof pivot to the rear end of the handrail frame 1. A pair of handrail support rods 8 rotatably connected at their lower ends to the other end of the reversing bracket 6, and extend in the front-rear direction along both side surfaces of the seat portion of the seat. A pair of seat support rods 9 whose ends are rotatably connected to the front legs 3 and whose rear ends are rotatably connected to the other end of the reversing bracket 6. The reversing bracket 6, the handrail support bar 8, and the seat support bar 9 are connected to each other by a shaft 12.

When the baby carriage is heard, the open state of the baby carriage is locked by the reversing bracket 6 being fixed at a position along the upper half of the rear leg 5. Reversing bracket 6
Is released, the lock of the stroller in the open state is released. That is, the baby carriage can be folded. With the folding operation of the stroller, the reversing bracket 6
1 rotates clockwise in FIG. 1, and in a closed state of the baby carriage, the reversing bracket 6 is positioned along the lower half of the rear leg 5 as shown by an imaginary line in FIG. Such folding operation is the same as that of the baby carriage disclosed in Japanese Patent Publication No. 58-32065 or Japanese Patent Publication No. 62-13230. When the stroller is folded, the front wheel 2 and the rear wheel 4 are close to each other, and they are located at the same height to enable the stroller to stand alone.

Referring to FIG. 3, the stroller further includes a pair of backrest members 13 whose lower end portions are rotatably connected to a rear portion of the handrail frame 1, and extends in the up-down direction. And a pair of push rods 10a and 10b rotatably connected to the other end of the reversing bracket 6 via a pair of push rods 10a and 10b which can be switched between two positions of a back-side pushing position and a facing-side pushing position. And a push rod connecting member 11 that extends in the direction and connects the upper ends of the pair of push rods 10a and 10b.

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

At the center of the pair of push rods 10a and 10b extending in the vertical direction,
A pair of rotation hooks 15 are rotatably mounted via a shaft 14. Correspondingly, locking pins 16, 17 are provided on the rear and front portions of the handrail frame 1, respectively. In the state shown in FIG. 1, the rotation hook 15 is
, The pair of push rods 10a and 10b are fixed at the position where the back is pushed. In the state shown in FIG. 3, the rotation hook 15 is engaged with the other
A pair of push rods 10a and 10b are fixed in a face-to-face state.

FIG. 2 is a view of a connecting portion between the pair of push rods 10a and 10b and the push rod connecting member 11, as viewed from the front side of the stroller. The push rod connecting member 11 has legs 11a and 11b that overlap the upper portions of the pair of push rods 10a and 10b.

4 and 5 are cross-sectional views of the center portion of the push rod connecting member 11 as viewed from the front side of the baby carriage. Push rod connecting member 11
An operation means for performing an operation of releasing the lock of the stroller in the open state is provided at a central portion of the stroller. This will be described more specifically.

The operating means is an operation button 24 incorporated in a central portion of the push rod connecting member 11 so as to be vertically movable, and a central portion thereof is rotatably attached to a central portion of the push rod connecting member 11 via a shaft 21. One end includes a pair of rotating members 22 and 23 connected to the operation button 24 via pins 26 and 27, respectively.

The operation button 204 has a vertically long slot 25 formed therein. The shaft 21 is inserted through the elongated hole 25. The operation button 24 can move up and down with respect to the push rod connecting member 11 within a range in which the shaft 21 can move up and down relatively in the elongated hole 25.
Inside the push rod connecting member 11, flexible tubes 36 and 38 are provided.
Is arranged. One end of a wire 37 passing through one flexible tube 36 is connected to the rotating member 22. The other end of the wire 37 is connected to a disengagement member housed in one push rod 10b. Similarly,
One end of a wire 39 passing through the other flexible tube 38 is connected to the other rotating member 23. The other end of this wire 39 is a push rod 10 located on the other side of the stroller.
It is connected to the engagement release member housed in a.

A pair of disengagement members 64 (see FIGS. 19 and 20)
Is provided so as to be able to move up and down in the push rods 10a and 10b, and is constantly urged downward by a spring. When the pair of disengagement members 64 is pulled upward by the wires 37 and 39,
A pair of open state lock members 67 (see FIGS. 19 and 20)
Push up. The pair of open state lock members is provided so as to be displaceable between an upper position and a lower position, and engages with the reversing bracket when brought to the lower position in the open state of the stroller so as to rearward the reversing bracket. It is fixed at a position along the upper half of the leg.

As shown in FIG. 4, when the operation button 24 is at the lower position, the pair of open state lock members are brought to the lower position and engage with the reversing bracket to lock the open state of the stroller. On the other hand, when the operation button 24 is moved upward by operating the hand as shown in FIG.
3 rotates in a predetermined direction while pulling the wires 37 and 39. Accordingly, the pair of disengagement members move upward to bring the pair of open state lock members to the upper position. as a result,
The engaged state between the open state lock member and the reversing bracket is released. In that state, the lock of the open state of the stroller is released.

The operation button 24 protrudes downward from the bottom surface of the push rod connecting member 11. On the other hand, on the upper surface of the push rod connecting member 11,
A storage recess 30 is provided. On the bottom wall of the storage recess 30,
A penetrating opening 31 is provided. In addition, storage recess 30
Are provided with engagement recesses 32, 33, 34, 35 on the bottom wall.
FIG. 8 is a plan view showing an upper surface portion of the push rod connecting member 11. FIG. Referring to FIG. 8, it is clear how the storage recess 30, the opening 31, and the engagement recesses 32, 33, 34, 35 are formed. As shown in the figure, a cam portion 53 protruding toward the opening 31 is provided on a side wall portion of the storage recess 30.

Referring to FIGS. 6 and 7, a stopper 40 is housed in the housing recess 30 of the push rod connecting member 11 so as to be slidable in the left-right direction in the figure. FIG. 10 is a perspective view of the stopper 40, and FIG. 1 is a front view thereof.

The stopper 40 has locking claws 41 and 42 that project downward through the opening 31 of the push rod connecting member 11. As shown in FIG. 12, the locking claws 41 and 42 of the stopper 40 are
With the edge of the opening 31. This engagement prohibits the stopper 40 from coming out upward.

As is clear from FIGS. 10 and 11, the stopper 40
Are provided with engagement projections 43 and 44 projecting downward. The engaging projections 43, 44 fit into the engaging recesses 32, 33, 34, 35 formed in the push rod connecting member 11. Sixth
9 and 9, when the stopper 40 is at the left position in the figure, the engaging convex portion 43 of the stopper 40 fits into the engaging concave portion 32 of the push rod connecting member 11, and the engaging convex portion 44 Are fitted in the engagement recesses. On the other hand, as shown in FIG. 7, when the stopper 40 is brought to the right position in the figure, the engaging projection 43 of the stopper 40 fits into the engaging recess 33 of the push rod connecting member 11, and The mating projection 44 is fitted in the engagement recess 35. The reason why the engaging projections and the engaging recesses are provided in this way is to prevent the stopper 40 from sliding freely.

As shown in FIGS. 9 and 10, circular concave portions 45 and 46 are formed in the upper surface portion of the stopper 40. The circular concave portions 45 and 46 are provided for convenience in sliding the stopper 40.

Referring to FIG. 6 and FIG. 7, a step portion including a peak portion 28 and a valley portion 29 is formed at the upper end portion of the operation button 24 and facing the stopper 40. As shown in FIG. 6, when the stopper 40 is brought to the left position in the figure, the locking claws 41 and 42 of the stopper 40 face the peak 28 of the operation button 24. Therefore, operation buttons 24
Cannot move upward from the state shown in FIG.

On the other hand, when unlocking the stroller in the open state,
First, the stopper 40 is slid rightward from the state shown in FIG. Then, the locking claws 41 and 42 of the stopper 40 have a positional relationship facing the valley 29 of the operation button 24, and a gap is formed between the two. The operation button 24 can move upward because of the gap. The state in which the operation button 24 has been moved upward is the state shown in FIG. As described above, in the state shown in FIG. 7, the pair of disengagement members are pulled upward by the wires 37 and 39 and move upward, thereby pushing the pair of open state lock members upward. As a result, the open state lock of the baby carriage is released.

Referring to FIGS. 6 and 7, in the stopper 40,
The sounding device 50 is built in. FIG. 13A is an illustrative view of the sounding device 50, and FIG. 13B is its electric circuit diagram. Referring to these drawings, sounding device 50 includes movable terminal 51, fixed terminal 55, IC 56, battery 57, and oscillation speaker 58. The movable terminal 51 contacts the fixed terminal 55 in a free state, that is, in a state where no external force is applied. When the movable terminal 51 comes into contact with the fixed terminal 55 to close the contact, the oscillation speaker 58 emits a sound such as music or an alarm sound.

Referring to FIG. 10 and FIG. 13A, the movable terminal 51 of the sound generating device 50 protrudes outward from the side wall of the stopper 40.
As shown in FIG. 14, when the stopper 40 is located on the left side in the figure, the movable terminal 51 rides on the cam portion 53 of the push rod connecting member 11, so that the movable terminal 51 and the fixed terminal 55 Are separated from each other and the contacts are open. Therefore, no sound is output from the sounding device 50.
On the other hand, as shown in FIG. 15, when the stopper 40 is brought to the right position in the figure, the movable terminal 51
The movable terminal 51 and the fixed terminal 55 come into contact with each other. In this state, a sound is emitted from the sounding device 50.

FIG. 10 is a view of the connection portion between the reversing bracket 6 and the handrail support bar 8 located on the right side of the baby carriage, as viewed from the inside of the baby carriage. FIG. 17 is a view of the connection between the push rod 10b and the reversing bracket 6 located on the right side of the baby carriage, as viewed from the inside of the baby carriage. FIG. 18 is a view of a portion related to the reversing bracket 6 located on the right side of the baby carriage, as viewed from the rear side of the baby carriage, and FIG. 19 is a cross-sectional view of the portion. In FIGS. 16 and 17, for convenience,
The illustration of the seat support bar 9 is omitted.

Referring to these figures, the reversing bracket 6 is attached to the rear leg 5.
And one end thereof is movably connected to the rear leg 5 via a shaft 7. A rear end of the seat support rod, a lower end of the handrail support rod 8, and a lower end of the push rod 10b are rotatably connected to the other end of the reversing bracket 6 via a shaft 12. . As shown in FIG. 18, with the handrail support rod 8, the rear leg 5, and the reversing bracket 6, the push rod 10b is located on the outer side of them.
The seat support bars 9 are located on their inner sides. When the stroller is open, the reversing bracket 6 is
By fixing the stroller at a position along the upper half, the open state of the stroller is locked. When the stroller is closed, the reversing bracket 6 is located along the lower half of the rear leg 5.

Referring to FIG. 19, engagement release member 64 is housed in push rod 10b. The engagement releasing member 64 can move up and down in the push rod 10b. The lower end of the wire 39 shown in FIG. 4 is connected to the disengagement member 64. As described above, the disengagement member 64 is urged by a spring (not shown) to always move downward. When the operation button 24 shown in FIG. 4 is operated by hand and moved upward, that is, when the state shown in FIG.
The wire 64 is pulled up by the wire 39 and moves upward. This state is the state shown in FIG.

The engagement release member 64 has a push-up portion 64a protruding inward of the baby carriage. The push-up portion 64a protrudes beyond the wall of the push rod 10b. Correspondingly, the first
As shown in FIG. 7, the push rod 10b has an elongated hole 66 for guiding the push-up portion 64a.

As shown in FIG. 19, a vertically long guide hole 69 is also formed in the lower end portion of the handrail support rod 8. An open state lock member 67 is housed in the guide hole 69 so as to be vertically movable. As shown in the figure, the open state lock member 67 has an engagement shaft portion 67 protruding outward and inward.
have a. As shown in FIG. 19, a spring 68 is housed between the open state lock member 67 and the handrail support bar 8, whereby the open state lock member 67 is constantly urged downward. .

Referring to FIG. 16 and FIG. 17, the reversing bracket 6 is formed with an engagement recess 6a adapted to receive the engagement shaft 67a of the open state lock member 67. In the open state of the stroller, the engagement shaft portion 67a of the open state lock member and the engagement concave portion 6a of the reversing bracket 6 are in the engaged state, thereby inhibiting the rotation of the reversing bracket 6 and opening the stroller. Locking state.

With reference to FIGS. 17, 18, and 19, the engagement shaft 67a of the open state lock member 67 and the engagement recess 6 of the reversing bracket 6 will be described.
When “a” is in the engaged state, the engagement shaft portion 67a is positioned in contact with the push-up portion 64a of the engagement release member 64. The open state lock member 67 is displaceable between an upper position and a lower position. Similarly, the engagement release member 64 can be displaced between an upper position and a lower position. In the state shown in FIG. 19, the open state lock member 67 is at the lower position, and the engagement release member 64 is at the lower position. FIG. 20 is a drawing corresponding to FIG. In the state shown in FIG. 20, the open state lock member 67 is at the upper position, and the engagement release member 64 is also at the upper position.

FIG. 16 to FIG. 20 show the structure of a portion located on the right side of the baby carriage. However, it should be understood that the structures of the portions located on the left and right side surfaces of the stroller are basically exactly the same.

 Next, the overall operation will be described.

As shown in FIG. 1, it is assumed that the open state of the baby carriage is locked. In this case, the operation button 24 and the stopper 40 arranged at the center of the push rod connecting member 11 are at the positions shown in FIG. To release the lock of the stroller in the open state, the stopper 40 must first be slid. Therefore, the operation button 24 does not move upward unexpectedly, and therefore, the lock of the stroller in the open state is not suddenly released.

Further, in the embodiment shown in FIG. 6, the operation button 24 projects downward from the bottom surface of the push rod connecting member 11, and the stopper 40
Are arranged on the upper surface of the push rod connecting member 11. Stopper
By arranging the 40 and the operation buttons 24 in such a positional relationship, the operation becomes very easy. That is, when the push rod connecting member 11 is gripped by a finger, the thumb is usually located on the bottom surface side of the push rod connecting member 11 and the remaining four fingers are located on the upper surface side of the push rod connecting member 11. Alternatively, conversely, the thumb is positioned on the upper surface side of the push rod connecting member 11, and the remaining four fingers are positioned on the bottom surface side of the push rod connecting member 11.
Therefore, for example, the stopper 40 can be operated with the thumb, and the operation button 24 can be operated with the remaining four fingers.

When the stopper 40 is at the left position as shown in FIG. 6, the movable terminal 51 of the sound generator 50 is moved as shown in FIG.
Is separated from the fixed terminal 55. Therefore, the pronunciation device 50
No sound is output from. In other words, when the stopper 40 prohibits the upward movement of the operation button 24,
No sound is output from the sounding device 50.

Next, it is assumed that the stopper 40 is manually operated and moved to the right position as shown in FIG. In this case, as shown in FIG. 15, the movable terminal 51 of the sound generator 50 contacts the fixed terminal 55. As a result, a sound is emitted from the sounding device 50. When a sound is being emitted from the sounding device 50, the operation button 24 can be moved upward. When the operation button 24 is moved upward as shown in FIG. 7, the pair of rotating members 22 and 23 shown in FIG. 4 and FIG. It is pulled up along a pair of push rods 10a and 10b. Then, the disengagement member 64 shown in FIG. 19 is pulled upward by the wires 37 and 39 and moves upward.

Referring to FIG. 20, when engagement release member 64 moves upward, open state lock member 67 is pushed up by push-up portion 64a to reach the upper position. As a result, the open state lock member
The engagement state between the engagement shaft 67a of the 67 and the engagement recess 6b of the reversing bracket 6 is released. Therefore, the reversing bracket 6
Can roll. In other words, the unlocked state of the baby carriage is released, and the baby carriage can be folded.

Until the baby carriage shifts from the open state to the folded state, sound is output from the sounding device. Although not shown, when the stroller reaches the folded state, if the user releases the hand holding the operation button 24 and moves the operation button 24 to the lower position, the open state lock member 67 Engage the position to lock the stroller in the folded state.
Even in this state, when the stopper 40 is at the right position as shown in FIGS. 7 and 15, sound is emitted from the sound generator. Therefore, the person operating the stroller,
By hearing the sound, it can be recognized that the stopper 40 is not at the lock position. Finally, after the folded state of the stroller is locked, if the stopper 40 is manually operated to move the stopper 40 to the left position as shown in FIGS. 6 and 14, no sound is output from the sound generator 50. When the stopper 40 is at the position shown in FIGS. 6 and 14, the upward movement of the operation button 24 is prohibited. Therefore, even if the person operating the stroller unconsciously grasps the operation button 24 with his / her hand, the operation button 24 does not move upward, and the locked state of the stroller is not released.

The embodiments described above are merely examples that embody the present invention. Therefore, various modifications and variations are possible within the equivalent scope of the present invention. Some of the modifications will be described below.

21 to 24 show another embodiment of the present invention. In these drawings, the elements denoted by the same reference numerals as those in the above-described embodiment indicate the same or corresponding elements as those in the above-described embodiment.

Referring to FIG. 21, a slide lock member 70 is attached to handrail support bar 8 so as to be vertically movable. A wire 83 is connected to the slide lock member 70. Wire 83
A lever (not shown) is connected to the upper end of the wire 83. By rotating the lever, the wire 83 is pulled upward. When the wire 83 is pulled upward, the slide lock member 70 also moves upward. Although not shown, the slide lock member 70 is urged by a spring to always move downward.

As shown in FIG. 21, when the slide lock member 70 is at the lower position and is engaged with the engagement recess 6a of the reversing bracket 6, the open state of the baby carriage is locked. 21st
When the slide lock member 70 is pulled upward by the wire 83 and moves upward from the state shown in the figure, the engagement state between the slide lock member 70 and the engagement recess 6a of the reversing bracket 6 is released,
The stroller is unlocked in the open state.

In the state shown in FIG. 22, the reversing bracket 6 is positioned along the lower half of the rear leg 5, and the slide lock member
70 is engaged with the engagement concave portion 6b of the reversing bracket 6. In this state, the folded state of the baby carriage is locked. From the state shown in FIG. 22, when the slide lock member 70 is pulled upward by the wire 83 and moves upward, the engagement state between the slide lock member 70 and the engagement recess 6b of the reversing bracket 6 is released, and the folded state of the baby carriage is released. The lock on is released.

Although not shown, the slide lock member 70 incorporates a sound generating device. FIG. 23 shows a slide lock member.
The bottom surface of 70 is shown schematically. As shown in the figure, two electrode terminals 71 and 72 of the sound generator are exposed and appear on the bottom surface of the slide lock member 70. Two electrode terminals 71, 72
Are provided at remote locations. Two electrode terminals 71 and 72
Is electrically connected, sound is output from the sounding device.
The sounding device is provided with a timer so as to emit sound only for a fixed time. Therefore, after the two electrode terminals 71 and 72 are electrically connected, a sound is output only for a certain time, and no sound is output after the certain time has elapsed.

FIG. 24 schematically shows the surface of the engaging recess 6a of the reversing bracket 6. A conduction plate 81 is attached to the surface of the engagement recess 6a. Similarly, a conductive plate 82 is attached to the surface of the other engagement recess 6b of the reversing bracket 6.

The operation when shifting the baby carriage from the opened state to the folded state will be described. First, the slide lock member 70 is moved upward from the state shown in FIG. If the folding operation of the stroller is started in this state, the reversing bracket 6 rotates clockwise in the figure and reaches the position shown in FIG. Further, when the slide lock member 70 is moved downward, the slide lock member 70 and the engagement recess 6b of the reversing bracket 6 are engaged, and the folded state of the baby carriage is locked.
At this time, when the slide lock member 70 and the engagement recess 6b of the reversing bracket 6 are completely engaged, the two electrode terminals 71 and 72 provided on the bottom surface of the slide lock member 70.
Are electrically connected via a conductive plate 82 attached to the engagement recess 6b. Therefore, the sound generating device built in the slide lock member 70 emits sound only for a certain period of time.
By hearing this sound, the person operating the stroller can recognize that the folded state of the stroller is completely locked. On the other hand, when no sound is emitted from the sound generating device, the slide lock member 70 and the engaging recess 6b of the reversing bracket 6 are not completely engaged. In other words, the stroller is in an incompletely locked state with respect to the folded state. Therefore, the operator can recognize that the locking of the stroller in the folded state is incomplete by knowing that no sound is emitted from the sounding device.

The above-described operation also applies to the case where the baby carriage is shifted from the folded state to the open state. That is, when the baby carriage is opened and the slide lock member 70 is moved downward, if a sound is emitted from the sound generator, the slide lock member 70 and the engagement recess 6a of the reversing bracket 6 are completely engaged. It means that it is. In other words, it means that the lock for the open state of the baby carriage is complete. Conversely, if no sound is emitted from the sounding device, it is determined that the engagement between the slide lock member 70 and the engagement recess 6a of the reversing bracket 6 is incomplete, and that the lock for the open state of the stroller is incomplete. means.

In the embodiment described above, the main part of the present invention has been described for the lock mechanism for the open state or the folded state of the baby carriage, but the present invention is also applied to the lock mechanism for the rotatably provided push rod. be able to. For example, in the stroller shown in FIG. 1, the turning hook 15 is used as a lock member for the push rod, but instead of this turning hook, a slide hook that can slide up and down along the push rods 10a and 10b is used. Is provided. Then, the lower ends of the wires 37 and 39 shown in FIG. 4 are connected to the slide hooks. In this way, by operating the operation button 24, a lock operation on the push rods 10a and 10b can be realized. Needless to say, in such an embodiment,
A stopper 40 incorporating a sound generating device as shown in FIG. 6 is employed.

Further, in the baby carriage shown in FIG.
In order to confirm whether the locking pins 15 and 15 are securely engaged with each other, electrode terminals 71 and 72 and conductive plates 81 as shown in FIGS. May be provided. In this case, when the rotating hook and the locking pin are securely engaged, a sound is emitted for a certain period of time.

As a modification, a light emitting device that generates light may be used instead of the sound generating device that generates sound. In short, the present invention provides an electric connection when the first and second members provided so as to be relatively movable are changed from one of the engagement relationship and the non-engagement relationship to the other. And a signal generator that generates a signal that is recognized by human hearing or vision in response to the switch being turned on.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention. FIG. 2 is a view of the push rod of the stroller shown in FIG. 1 as viewed from the front side. FIG. 3 is a side view showing a state after the push rod is switched from the state shown in FIG. 1 to the face-to-face pushing position. FIG. 4 is a sectional view of a central portion of the push rod connecting member 11 shown in FIG. 2 as viewed from the front side of the stroller. FIG. 5 is a cross-sectional view showing a state after the operation button 24 has been moved upward from the state shown in FIG. FIG. 6 is a cross-sectional view of the center portion of the push rod connecting member 11 as viewed from the front side of the stroller, similarly to FIG. 4, and omits a configuration related to a pair of rotating members. FIG. 7 shows the sixth
FIG. 4 is a cross-sectional view showing a state after the operation button 24 has been moved upward from the state shown in FIG. FIG. 8 shows a push rod connecting member.
FIG. 11 is a view of a central portion of 11 as viewed from the top side, in which a stopper is omitted. FIG. 9 is a view of the central portion of the push rod connecting member 11 as viewed from the upper side, similarly to FIG. 8, and shows a state in which a stopper is attached. FIG. 10 is a perspective view showing a stopper. FIG. 11 is a front view of the stopper. FIG. 12 is a cross-sectional view showing a state where the stopper is attached to the push rod connecting member. FIG. 13A is an illustrative view showing a sound generating device built in the stopper 40. FIG. FIG. 13B is an electric circuit diagram of the sounding device. FIG. 14 is an illustrative view showing a state in which a stopper 40 containing a sound generating device is attached to the push rod connecting member 11. Fifteenth
The figure is an illustrative view showing a state after the stopper 40 has moved rightward from the state shown in FIG. FIG. 16 is a view of a connecting portion between the handrail support rod 8 and the reversing bracket 6 as viewed from the inner surface side of the stroller. FIG. 17 is a view of a connecting portion between the push rod 10b and the reversing bracket 6 as viewed from the inner surface side of the baby carriage. FIG. 18 is a view of the connecting portion of the push rod 10b, the handrail support rod 8, and the seat support rod 9 located on the right side of the baby carriage, as viewed from the rear side of the baby carriage. FIG. 19 is a sectional view of FIG. FIG. 20 is a cross-sectional view showing a state after the open state lock member 67 has moved upward from the state shown in FIG. FIG. 21 is a view showing a state where the slide lock member 70 and the reversing bracket 6 are engaged. FIG. 22 is a view showing a state after the reversing bracket 6 has been rotated clockwise from the state shown in FIG. FIG. 23 is an illustrative view showing a bottom surface of the slide lock member 70. FIG. 24 is an illustrative view showing a surface of an engagement concave portion 6a of the reversing bracket 6. FIG. In the figure, 1 is a handrail frame, 3 is a front leg, 5 is a rear leg, 6 is a reversing bracket, 8 is a handrail support bar, 9 is a seat support bar, 10a,
10b is a push rod, 11 is a push rod connecting member, 15 is a rotation hook, 22, 23
Is a rotating member, 24 is an operation button, 36 is a flexible tube, 37
Is a wire, 38 is a flexible tube, 39 is a wire, 40 is a stopper, 41 and 42 are locking claws, 50 is a sound generator, 51 is a movable terminal, 5
3 is a cam, 55 is a fixed terminal, 56 is an IC, 57 is a battery, 58
Denotes an oscillation speaker, 64 denotes an engagement release member, 67 denotes an open state lock member, and 68 denotes a spring. In each drawing, the same numbers indicate the same or corresponding elements.

Claims (1)

(57) [Claims] 1. An operation mechanism for performing a desired operation by a predetermined operation, and first and second members movably provided, wherein the first and second members are engaged with each other. A stroller, wherein the operation of the operation mechanism is prohibited when in a relationship, and the operation of the operation mechanism is permitted when the first and second members are in a non-engagement relationship. The first and second members Has a switch that is electrically turned on when one of the engagement relationship and the non-engagement relationship is changed to the other relationship, and in response to the switch being turned on, A stroller comprising a signal generator for generating a signal recognized by human hearing or vision.