KR101399656B1 - Electromotive baby carriage - Google Patents

Abstract

The present invention relates to an electric stroller comprising: a battery; a main switch for switching whether or not to supply a power supply supplied from the battery; a driving switch for switching whether or not to electrically drive the stroller using the power supply supplied through the main switch; a sensor operated by the power supply supplied through the main switch to detect whether or not a user grips a handle of the stroller; and a driving part for transferring rotation force to wheels corresponding to the power supply supplied through the driving switch and the detection signals transferred from the sensor and determining whether or not to operate a brake corresponding to the detection signals received from the sensor. The present invention can fundamentally prevent accidents due to the carelessness of the user by automatically operating the brake when the user does not grip the handle of the stroller. Also, the present invention can be electrically or manually driven according to driving situations in a state where the user grips the handle of the stroller.

Description

[0001] ELECTROMOTIVE BABY CARRIAGE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric baby stroller, and more particularly, to an electric stroller which can be operated electrically or manually and which provides safe operation and convenience according to the grip of the stroller handle.

BACKGROUND OF THE INVENTION [0002] A baby carriage is a kind of car that pushes and drives an infant, and various types of baby carriages are proposed in consideration of safety and functionality.

In view of safety, a stroller with a fixing device for fixing a wheel or a wheel is disclosed. In view of functionality, a stroller is disclosed in which a power transmission device is connected to a wheel or a wheel rotation shaft to smoothly move a slant or the like have.

However, since the fixing device is manually operated by the user, the baby carriage having the fixing device can not avoid an accident on a slope or the like when the user is careless.

On the other hand, a baby carriage having a power transmission device can receive a great deal of assistance from an inclined place due to a power transmission device, but also requires a separate fixing device to be operated by a user for safety. That is, the power transmission device and the fixing device are configured to operate separately.

Accordingly, it is necessary to provide a configuration capable of collectively controlling the combination of the safety (fixing device) and the functionality (transmission device) of the stroller.

Korean Patent Publication No. 10-2010-0032478 (published on March 26, 2010).

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a stroller which can operate the stroller in an electric or manual manner by sensing the gripped state of the stroller handle, Wherein the braking force of the wheel can be controlled.

According to an aspect of the present invention, there is provided an electric stroller including: a battery; A main switch for switching whether or not power supplied from the battery is supplied; A drive switch for performing switching on whether electric power is supplied using a power supplied through the main switch; A sensor which is operated by a power supplied through the main switch and detects whether the grip of the stroller is gripped; And a driving unit that transmits a rotational force to the wheel in response to a power supplied through the driving switch and a sensing signal transmitted from the sensor and determines whether the brake is to be braked in response to whether or not a sensing signal is generated from the sensor .

In this case, the driving unit may include: a motor generating the rotational force; A clutch brake for interrupting the rotational force, releasing a brake when the sensing signal is generated, and braking the brake when the sensing signal is not generated; And a power transmitting portion for transmitting the rotational force transmitted through the clutch brakes to the wheels.

The power transmission unit may use a belt that connects a wheel coupled to a rotary shaft of the clutch brake and a wheel coupled to a rotary shaft of the wheel.

The motor and the clutch brake are fixed to a plate, and the plate is preferably coupled to a pair of rear axles having rear wheels.

The driving unit may include: a motor for generating the rotational force; A clutch brake for interrupting the rotational force, releasing a brake when the sensing signal is generated, and braking the brake when the sensing signal is not generated; And a gear for transmitting rotational force transmitted through the clutch brake to the wheel.

The braking force of the brake is larger than the rotational force of the motor, and the sensor may be a photo sensor or a touch sensor formed on the handle lever, and the drive switch is preferably a push button, and the main switch and the motor drive switch are connected to a handle May be formed on the installed switchboard.

As described above, according to the electric stroller according to the present invention, whether or not the stroller wheel is braked is determined depending on whether the stroller handle is grasped or not, that is, when the stroller handle is not gripped, the brake is automatically operated, The accident can be fundamentally prevented.

According to the present invention, since the baby carriage can be operated electrically or manually while the stroller handle is grasped, various operations can be performed according to the driving situation.

1 is a perspective view of a motor-driven baby carriage according to an embodiment of the present invention.
2 is a side view of an electric stroller according to an embodiment of the present invention.
3 is a rear perspective view of an electric stroller according to an embodiment of the present invention.
4 is an enlarged view of a driving unit according to an embodiment of the present invention.
5 is a block diagram of a control circuit of an electric baby stroller according to an embodiment of the present invention.
6 is a control flowchart of an electric baby stroller according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electric baby carriage of the present invention will be described in detail with reference to the accompanying drawings.

2 is a side view of an electric baby stroller according to an embodiment of the present invention. FIG. 3 is a side view of the electric baby stroller according to an embodiment of the present invention. FIG.

1 to 3, an electric baby carriage according to the present invention includes a pair of left and right front angles 2 having front wheels 1, a pair of left and right rear angles 4 bent with rear wheels 3, A connecting shaft 5 connecting a pair of full-angle ends 2 and a pair of odd-numbered bends 4, a rear wheel 3 connecting the lower ends of the pair of odors 4, A pair of knobs 7 that are rotatably fastened at the ends of the pair of horns 4 and a knob lever 8 bent in a U shape coupled to the pair of knobs 7, A switch board 9 connected between the knob lever 8 and a sensor 10 installed on both sides of the bent portion of the knob lever 8 for detecting whether or not the knob is gripped, And a seat frame 12 coupled to the seat frame 11 and a guard (not shown) coupled to the seat pipe 12. The seat frame 12 includes a seat frame 11, A seat 14 fastened to the seat pipe 12; a plate 15 coupled between the connecting shaft 5 and the rear wheel shaft 6; A driving part 16 for transmitting rotational force to the rear wheel 3 or the rear wheel shaft 6 and a battery accommodation box 17 coupled to the pair of front and rear angles 2 and 4.

Here, the main switch 91 and the motor drive switch 92 are formed on the switch board 9. It is preferable that the motor drive switch 92 is constituted by a push button.

On the other hand, the sensor 10 preferably uses a photosensor.

The switch board 9 and the sensor 10 are shown as an example and can be installed in various forms on the handle lever 8. [ For example, the sensor 10 may use a touch sensor, and the main switch 91 and the motor drive switch 92 may be installed at specific finger positions.

In the electric baby stroller of the present invention having the above-described structure, after the main switch 91 is turned on, it is manually operated in a state in which the stroller handle is grasped, or when the motor driving switch 92 is pressed, And operated by electric motor. On the other hand, when the handle of the stroller is not gripped, the driver 16 is automatically braked.

4 is an enlarged perspective view of a driving unit according to an embodiment of the present invention.

4, the driving unit 16 of the present invention includes a motor 161 for generating a rotational force, a clutch brake (including a clutch control circuit) 162 for interrupting the transmission of the rotational force of the motor 161, A driving wheel 163 coupled to the rotating shaft of the clutch brake 162, a rear wheel wheel 164 coupled to the rear wheel shaft 6, a belt 165 connecting the driving wheel 163 and the rear wheel 164, .

In the present embodiment, the power transmission system that connects the driving wheel 163 and the rear wheel wheel 164 using the belt 165 is illustrated, but a power transmission system based on the gear engagement may also be used. That is, the power transmission may be performed by replacing the driving wheel 163 and the rear wheel wheel 164 with gears.

The drive unit 16 configured as described above transmits power through the clutch brake 162 in response to the rotation of the motor 161 and rotates the rear wheel shaft 6 through power transmission through the belt 165.

On the other hand, the clutch brake 162 performs brake control such that the braking force of the brake 161 is set to be larger than the driving force of the motor 161 . The braking state can be maintained even when the motor drive switch 92 is depressed due to a mistake or a malfunction without holding the stroller handle.

5 is a block diagram of a control circuit of an electric baby stroller according to an embodiment of the present invention.

5, the control circuit of the electric baby stroller according to the present invention includes a battery 18, a main switch 91 for switching whether or not the power supplied from the battery 18 is supplied, A motor drive switch 92 for switching whether power is supplied to the motor 161 with respect to the supplied power source, a sensor 10 for detecting whether or not the handle of the stroller is gripped, a power source supplied through the motor drive switch 92, A motor 161 that is driven in response to the sensing signal transmitted from the sensor 10 and a clutch control circuit 162 that controls whether or not the brake is braked in response to the sensing signal transmitted from the sensor 10. [

The operation states of the brakes of the motor 161 and the clutch brake 162 depending on whether the motor drive switch 92 and the sensor 10 are driven are shown in Table 1 below.

When both the sensor 10 and the motor drive switch 92 are operated as in the above-mentioned Table 1, the stroller can be driven electrically, and the sensor 10 operates and the motor drive switch 92 The motor 10 is not operated and the motor drive switch 92 is operated. In this case, as an example of a malfunction, the motor 161 The braking state of the brake is maintained by the braking force of the brake, and when the sensor 10 and the motor driving switch 92 are both not operated, the braking state of the brake is maintained.

6 is a control flowchart of an electric baby stroller according to an embodiment of the present invention.

Referring to FIG. 6, if the main switch 91 is operated (S1) and the main switch 91 is not turned on, the clutch brake 162 maintains the brake braked state, (S2). Of course, manual operation of the clutch brakes may be possible through mechanical operation of the clutch brakes.

When the main switch 91 is turned on, power is supplied to the sensor 10.

The sensor 10 detects whether the grip of the stroller is grasped (S3).

When the knob of the stroller is not gripped, a sensing signal is not generated from the sensor 10, so that the clutch brake 162 is maintained in a braked state. As long as the motor drive switch 92 is not pressed, The motor 161 maintains the driving stop state (S4 to S5).

At this time, if the motor drive switch 92 is depressed due to a malfunction or a mistake even though the stroller handle is not gripped, the brake braking state is maintained to prevent the stroller from advancing (S6). This is because the braking force of the brake is greater than the driving force of the motor so that the braking state of the baby carriage can be maintained.

On the other hand, when the stroller handle is grasped, a sensing signal is generated from the sensor 10, so that the motor 161 is maintained in the driving preparation state and the clutch brake 162 is maintained in the released state of the brake braking .

At this time, when the motor drive switch 92 is pressed, the motor 161 is driven. Thereby, the baby carriage is driven electrically (S7 to S9).

On the other hand, even if the motor drive switch 92 is not pressed, the clutch brake 162 maintains the state in which the brake braking is released, so that the baby carriage can be manually operated (S10).

On the other hand, when the stroller knob is not missed or grasped while moving in the electric or manual manner, the detection signal is not generated from the sensor 10, and the clutch brake 162 is switched to the brake braking state. Thus, it is possible to prevent an accident of a baby carriage on a slope or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

16:
161: Motor
162: Clutch brake
163: driving wheel
164: rear wheel
165: Belt

Claims (9)

A battery 18;
A main switch 91 for switching whether the power supplied from the battery 18 is supplied or not;
A motor drive switch 92 for performing switching on whether electric power is supplied using the power supplied through the main switch 91;
A sensor (10) operated by a power supplied through the main switch (91) to detect whether or not the grip of the stroller is gripped; And
And transmits a rotational force to the wheel in accordance with the power supplied through the motor drive switch 92 and the sensing signal transmitted from the sensor 10 and controls the braking of the brake 10 in response to the detection signal from the sensor 10. [ (16) in which a determination is made,
(a) when a sensing signal is not generated from the sensor 10 and the motor drive switch 92 is in the on-switching state, the motor drive and brake operation are performed;
(b) when no sensing signal is generated from the sensor (10) and the motor drive switch (92) is in an off-switching state, the motor is brought to a stop and brake operation state;
(c) when a sensing signal is generated from the sensor 10 and the motor drive switch 92 is in an on-switching state, the motor is driven and released;
(d) when a sensing signal is generated from the sensor 10 and the motor drive switch 92 is in the off-switching state, the motor is brought to a stop and unblock state;
In (a), the braking force of the brake is kept larger than the rotational force of the motor,
In the above (c), the electric operation is performed,
In the above (d), the electric stroller capable of manual operation.
The method according to claim 1,
The driving unit (16)
A motor 161 for generating the rotational force;
A clutch brake 162 for interrupting the rotational force, releasing the brake when the sensing signal is generated, and braking the brake when the sensing signal is not generated; And
And a power transmitting portion for transmitting the rotational force transmitted through the clutch brake (162) to the wheel.
3. The method of claim 2,
Wherein the power transmitting portion is a belt (165) connecting a driving wheel (163) coupled to a rotating shaft of the clutch brake (162) and a rear wheel wheel (164) coupled to a rotating shaft of the wheel.
3. The method of claim 2,
Wherein the motor (161) and the clutch brake (162) are fixed to a plate (15), and the plate (15) is coupled to a pair of rear horns (4) having rear wheels. delete delete delete delete delete

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