阅读说明：本技术 一种儿童推车 (Children's barrow ) 是由 高翔 俞学明 于 2020-05-18 设计创作，主要内容包括：本发明公开了一种儿童推车,包括推车车架、车轮组件和自动刹车机构,推车车架包括推把,自动刹车机构包括设在推把上的感应系统、控制器和刹车装置,刹车装置具有刹车和解刹状态,感应系统为自发电感应系统,刹车装置和感应系统分别与控制器电性连接,当人手握持推把并施力于推把瞬时,感应系统产生电流并发射第一电信号,控制器接收第一电信号并控制刹车装置刹车,当人手脱离推把或者人手握持推把但未施力于推把瞬时,感应系统产生电流并发射第二电信号,控制器接收第二电信号并控制刹车装置解刹。该儿童推车的感应系统根据人手握持或离开推把的瞬时动作来控制刹车装置刹车或解刹,感应系统无需电源装置对其供电,环保节能,使用方便。(The invention discloses a child stroller, which comprises a stroller frame, a wheel assembly and an automatic brake mechanism, wherein the stroller frame comprises a push handle, the automatic brake mechanism comprises an induction system, a controller and a brake device, the induction system, the controller and the brake device are arranged on the push handle, the brake device has a brake and brake releasing state, the induction system is a self-generating induction system, the brake device and the induction system are respectively and electrically connected with the controller, when a user holds the push handle and applies force to the push handle instantaneously, the induction system generates current and transmits a first electric signal, the controller receives the first electric signal and controls the brake device to brake, when the user releases the push handle or holds the push handle but does not apply force to the push handle instantaneously, the induction system generates current and transmits a second electric signal, and the controller receives the second electric signal and controls the brake device to release brake. The sensing system of the baby stroller controls the brake device to brake or brake off according to the instantaneous action of holding or leaving the push handle by hands, and the sensing system does not need a power supply device to supply power to the sensing system, so that the baby stroller is environment-friendly, energy-saving and convenient to use.)

1. The utility model provides a children's shallow, includes the shallow frame and sets up the wheel assembly of shallow frame bottom, its characterized in that: the children cart further comprises an automatic brake mechanism used for braking the wheel assembly to prevent the children cart from advancing, the cart frame comprises a push handle used for pushing, the automatic brake mechanism comprises an induction system, a controller and a brake device, the induction system, the controller and the brake device are arranged on the push handle, the brake device is provided with a brake state matched with the wheel assembly to prevent the wheel assembly from advancing and a brake release state separated from the wheel assembly to enable the wheel assembly to advance, the induction system is a self-generating induction system, the brake device and the induction system are respectively electrically connected with the controller, when a person holds the push handle and applies force to the push handle, the induction system generates current and transmits a first electric signal, and the controller receives the first electric signal and controls the brake device to release the brake, when the hand is switched from holding the push handle to being separated from the push handle or holding the push handle without applying force to the push handle, the induction system generates current and emits a second electric signal, and the controller receives the second electric signal and controls the brake device to brake.

2. The stroller of claim 1, wherein: the sensing system comprises a pressing layer, a signal transmitting device and an elastic piece, wherein the pressing layer is movably arranged on the pushing handle, the signal transmitting device is arranged between the pressing layer and the pushing handle, the elastic piece is used for driving the pressing layer to reset when a human hand leaves the pushing handle, the signal transmitting device is electrically connected with the controller, the elastic piece is arranged between the pressing layer and the pushing handle, the pressing layer is partially inserted into the signal transmitting device, when the human hand grips the pressing layer to drive the pressing layer to move relative to the pushing handle, the signal transmitting device transmits a first electric signal, and when the human hand leaves the pushing handle and the elastic piece drives the pressing layer to move reversely, the signal transmitting device transmits a second electric signal.

3. The stroller of claim 2, wherein: the signal emission device comprises an electromagnetic coil and a circuit board electrically connected with the electromagnetic coil, a magnetic rod is arranged on the pressing layer and inserted into the electromagnetic coil, when a person holds the pressing layer to drive the pressing layer to move relative to the pushing handle, the magnetic rod moves in the direction of separating from the electromagnetic coil to generate current, the circuit board emits the first electric signal, when the person leaves the pushing handle and the elastic piece drives the pressing layer to move in the reverse direction, the magnetic rod moves in the direction of extending into the electromagnetic coil to generate current, and the circuit board emits the second electric signal.

4. The stroller of claim 2 or 3, wherein: the pressing layer is rotatably arranged on the pushing handle through a rotating shaft, the pressing layer is provided with a pressing part for being held by a hand and an abutting part abutting against the signal emitting device, the abutting part is inserted into the signal emitting device, the abutting part and the pressing part are respectively positioned on two opposite sides of the rotating shaft, and the elastic part is arranged at the position of the pressing part.

5. The stroller of claim 1, wherein: the induction system is at least arranged on one of the left side and the right side of the push handle.

6. The stroller of claim 1, wherein: the controller and the brake device are both positioned at the lower part of the cart frame, and the induction system is wirelessly connected with the controller.

7. The stroller of claim 1, wherein: brake equipment is in including fixed setting brake disc and the activity on the wheel subassembly sets up go up and can with brake disc cooperatees or breaks away from the complex brake pin, works as when brake equipment is in the brake state, the brake pin with brake disc cooperatees, works as when brake equipment is in the state of separating the brake, the brake pin with cooperation between the brake disc is thrown off, brake equipment still including being used for ordering about brake pin action and with brake disc matched with drive arrangement, drive arrangement with controller electric connection.

8. The stroller of claim 7, wherein: the driving device comprises a motor fixedly arranged on the cart frame and a linkage structure arranged between a motor shaft of the motor and the brake pin, and the motor is electrically connected with the controller.

9. The stroller of claim 7, wherein: the driving device comprises an electromagnetic induction device fixedly arranged on the cart frame, the electromagnetic induction device is mechanically connected with the brake pin, and the electromagnetic induction device is electrically connected with the controller.

10. The stroller of claim 1, wherein: the cart frame comprises a rear connecting rod which is positioned at the lower part of the cart frame and extends along the left-right direction, the wheel assembly comprises rear wheel assemblies which can be respectively rotatably arranged at the left end part and the right end part of the rear connecting rod, the controller is arranged on the rear connecting rod, and the braking devices are respectively arranged at the left side and the right side of the rear connecting rod and brake the rear wheel assemblies at the corresponding side.

Technical Field

The invention relates to the technical field of children products, in particular to a stroller.

Background

The child stroller provides great convenience for adults to carry small children for outdoor activities, so that the child stroller gradually becomes a necessity for adults to carry children for outdoor activities, and therefore, the safety problem of the child stroller in use must be considered.

In order to improve the safety performance of the stroller during use, the stroller is generally provided with a brake device. Most brake equipment is manual brake equipment at present, and this kind of brake equipment need artificially manually or the foot to step on brake equipment makes the shallow braking when the shallow of children stops advancing, and this kind of brake equipment operation is complicated, forgets to operate brake equipment and make the shallow of children brake because of negligence moreover easily, has certain potential safety hazard. Some stroller uses an auto-induction brake device, but the induction system of the brake device needs a power supply, so that the power supply device needs to be arranged on the stroller to supply power to the induction system. The power supply device can generally adopt the form of an external power supply or the form of a built-in storage battery, and if the power supply device adopts the external power supply, the child cart is inconvenient to charge when doing outdoor activities; and if power supply unit adopts the battery, need in time change the battery or charge to the battery, the operation is inconvenient, the use of children's shallow of not being convenient for still can cause certain waste moreover, the polluted environment.

Disclosure of Invention

The object of the present invention is to address the deficiencies of the prior art by providing an improved stroller.

In order to achieve the purpose, the invention adopts the technical scheme that:

a child stroller comprises a stroller frame and a wheel assembly arranged at the bottom of the stroller frame, the child stroller further comprises an automatic brake mechanism used for braking the wheel assembly to prevent the child stroller from advancing, the stroller frame comprises a push handle used for pushing, the automatic brake mechanism comprises an induction system, a controller and a brake device, the induction system, the controller and the brake device are arranged on the push handle, the brake device is provided with a brake state matched with the wheel assembly to prevent the wheel assembly from advancing and a brake release state matched with the wheel assembly to release the wheel assembly to enable the wheel assembly to advance, the induction system is a self-generating induction system, the brake device and the induction system are respectively and electrically connected with the controller, when a person holds the push handle and applies force to the push handle, the induction system generates current and emits a first electric signal, the controller receives the first electric signal and controls the brake device to brake, when the hand is switched from holding the push handle to separating from the push handle or holding the push handle but not applying force to the push handle, the induction system generates current and emits a second electric signal, and the controller receives the second electric signal and controls the brake device to brake.

Preferably, the sensing system comprises a pressing layer movably arranged on the push handle, a signal transmitting device arranged between the pressing layer and the push handle, and an elastic piece used for driving the pressing layer to reset when a human hand leaves the push handle, the signal transmitting device is electrically connected with the controller, the elastic piece is arranged between the pressing layer and the push handle, the pressing layer is partially inserted into the signal transmitting device, when the human hand grips the pressing layer to drive the pressing layer to move relative to the push handle, the signal transmitting device transmits the first electric signal, and when the human hand leaves the push handle and the elastic piece drives the pressing layer to move reversely, the signal transmitting device transmits the second electric signal.

Furthermore, the signal transmitting device comprises an electromagnetic coil and a circuit board electrically connected with the electromagnetic coil, a magnetic rod is arranged on the pressing layer and inserted into the electromagnetic coil, when a person holds the pressing layer to drive the pressing layer to move relative to the pushing handle, the magnetic rod moves in the direction of separating from the electromagnetic coil to generate current, the circuit board transmits the first electric signal, when the person leaves the pushing handle and the elastic piece drives the pressing layer to move in the reverse direction, the magnetic rod moves in the direction of extending into the electromagnetic coil to generate current, and the circuit board transmits the second electric signal.

According to a specific embodiment, the pressing layer is rotatably arranged on the pushing handle through a rotating shaft, the pressing layer is provided with a pressing portion for being held by a hand and an abutting portion abutting against the signal emitting device, the abutting portion is inserted into the signal emitting device, the abutting portion and the pressing portion are respectively located on two opposite sides of the rotating shaft, and the elastic piece is arranged at the position of the pressing portion.

Preferably, the induction system is arranged on at least one of the left side and the right side of the push handle.

Preferably, the controller and the brake device are both located at the lower part of the cart frame, and the induction system is wirelessly connected with the controller.

Preferably, brake equipment is including fixed setting brake disc and the activity setting on the wheel subassembly is in on the shallow frame and can with brake disc cooperatees or breaks away from the complex brake pin, works as when brake equipment is in the brake state, the brake pin with the brake disc cooperatees, works as when brake equipment is in the state of separating braking, the brake pin with cooperation between the brake disc is thrown off, brake equipment still including being used for ordering about brake pin action and with brake disc matched with drive arrangement, drive arrangement with controller electric connection.

Further, drive arrangement is including fixed setting in motor on the shallow frame and setting are in the motor shaft of motor with the interlock structure between the brake pin, the motor with controller electric connection.

Further, the driving device comprises an electromagnetic induction device fixedly arranged on the cart frame, the electromagnetic induction device is mechanically connected with the brake pin, and the electromagnetic induction device is electrically connected with the controller.

Preferably, the stroller frame includes a rear link located at a lower portion of the stroller frame and extending in a left-right direction, the wheel assembly includes rear wheel assemblies rotatably disposed at left and right ends of the rear link, respectively, the controller is disposed on the rear link, and the braking devices are disposed at left and right sides of the rear link, respectively, and brake the rear wheel assemblies on a corresponding side.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the children cart is simple in structure, namely when a person holds the push handle and applies force to the push handle instantaneously, the sensing system can be triggered to send a first electric signal to the controller and control the brake device to brake, and when the person leaves the push handle instantaneously, the sensing system can be triggered to send a second electric signal to the controller and control the brake device to brake the children cart so as to prevent the children cart from advancing, so that the accident that the children cart is out of control is avoided, and the safety performance of the children cart in use is greatly improved; the induction system is a self-generating induction system, generates instantaneous current and transmits an electric signal in a mechanical mode, does not need a power supply device to supply power to the induction system, is environment-friendly and energy-saving, and enables the baby stroller to be convenient to use; in addition, the stroller does not need to be provided with a sensor device, is low in cost, and can avoid the problem that automatic braking cannot be realized due to damage of the sensor.

Drawings

FIG. 1 is a schematic structural view of the stroller of the present invention;

FIG. 2 is a schematic structural view of a push handle portion of the stroller of the present invention (the automatic braking mechanism is in a braking state);

fig. 3 is a schematic structural view of a push handle portion of the stroller of the present invention (the automatic brake mechanism is in an unlocked state).

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 3, the stroller of the present invention includes a stroller frame 1, a wheel assembly disposed at the bottom of the stroller frame 1, and an automatic braking mechanism for braking the wheel assembly to prevent the stroller from moving.

The stroller frame 1 includes a push handle 11 for a hand to hold when pushing the stroller, and the push handle 11 extends in the left-right direction.

The wheel assembly comprises a front wheel assembly 21 and a rear wheel assembly 22, the cart frame 1 further comprises a rear connecting rod 12, the rear connecting rod 12 is located at the rear portion of the cart frame 1 and located at the lower portion of the cart frame 1, the rear connecting rod 12 extends in the left-right direction, and the rear wheel assemblies 22 are respectively rotatably arranged at the left end portion and the right end portion of the rear connecting rod 12.

The automatic brake mechanism comprises a sensing system, a controller and a brake device. The sensing system is arranged on the pushing handle 11, the controller and the brake device are both arranged at the lower part of the cart frame 1, specifically, the controller is arranged on the rear connecting rod 12, the brake device is respectively arranged on the rear connecting rod 12 and the rear wheel assembly 22, in this embodiment, the brake device is respectively arranged at the left side and the right side of the rear connecting rod 12 and brakes the rear wheel assembly 22 at the corresponding side. The brake device and the induction system are respectively electrically connected with the controller.

The brake has a braking state that engages the rear wheel assembly 22 to prevent travel of the rear wheel assembly 22 and a released state that disengages the engagement between the rear wheel assembly 22 to allow travel of the rear wheel assembly 22. The induction system sends an electric signal to the controller, and the controller controls the brake device to brake or brake according to the received electric signal.

When the push handle 11 is held by a hand and force is applied to the push handle 11, the moment indicates that a person pushes the stroller to move the stroller, the induction system generates current and sends a first electric signal to the controller, the controller receives the first electric signal and controls the brake device to brake, and the stroller can move under the pushing of the person; when the hand is switched from the state of holding the push handle 11 to the state of being separated from the push handle 11 or the hand holds the push handle 11 but does not apply force to the push handle 11, the moment indicates that the person stops pushing the baby stroller, the induction system generates current and sends a second electric signal to the controller, and the controller receives the second electric signal and controls the brake device to brake, so that the baby stroller is in a static state, the current position is kept motionless, and the situation that the baby stroller is not pushed by people but runs out of control and by itself is avoided.

The sensing system comprises a pressing layer 31 movably arranged on the push handle 11, a signal transmitting device 32 and an elastic piece 33, wherein the signal transmitting device 32 and the elastic piece 33 are arranged between the pressing layer 31 and the push handle 11, the signal transmitting device 32 is electrically connected with the controller, and the elastic piece 33 is arranged between the pressing layer 31 and the push handle 11. When a human hand holds the push handle 11 and applies force to the pressing layer 31, the pressing layer 31 is pressed to move relative to the push handle 11, and when the human hand leaves the push handle, the pressing layer 31 is reversely moved and reset under the elastic force of the elastic member 33. The pressing layer 31 is partially inserted into the signal emitting device 32, when a human hand holds the pressing layer 31 to drive the pressing layer 31 to move relative to the push handle 11, the part of the pressing layer 31 inserted into the signal emitting device 32 synchronously moves relative to the signal emitting device 32 along with the pressing layer 31 to generate current, and the signal emitting device 32 emits a first electric signal; when the elastic member 33 drives the pressing layer 31 to move reversely after the human hand leaves the pushing handle 11, the part of the pressing layer 31 inserted into the signal emitting device 32 also generates current synchronously with the movement of the pressing layer 31 relative to the signal emitting device 32, and the signal emitting device 32 emits a second electric signal.

Specifically, the signal emitting device 32 includes an electromagnetic coil and a circuit board electrically connected to the electromagnetic coil, and the pressing layer 31 is provided with a magnetic rod inserted into the electromagnetic coil. When a user holds the pressing layer 31 by hands to drive the pressing layer 31 to move relative to the push handle 11, the magnetic bar moves relative to the electromagnetic coil in the direction of pulling out the electromagnetic coil, weak instantaneous current is generated in the electromagnetic coil in the process, the instantaneous current is transmitted to the circuit board, and the circuit board sends out a first electric signal; when the hand leaves the push handle 11 and the elastic part 33 drives the pressing layer 31 to move reversely, the magnetic bar moves relative to the electromagnetic coil in the direction of extending into the electromagnetic coil, the electromagnetic coil generates weak instantaneous current in the process, the instantaneous current is transmitted to the circuit board, and the circuit board sends out a second electric signal.

In this embodiment, the pressing layer 31 is rotatably disposed on the pushing handle 11 through the rotating shaft 34, the pressing layer 31 has a pressing portion 311 for being held by a human hand and an abutting portion 312 abutting against the signal emitting device 32, the rotating shaft 34 extends along the front-back direction, the magnetic rod is located at the position of the abutting portion 312, the abutting portion 312 and the pressing portion 311 are respectively located at two opposite sides of the rotating shaft 34, and the elastic member 33 is disposed at the position of the pressing portion 311.

When the hand leaves the push handle 11, the pressing layer 31 rotates around the rotating shaft 34 under the elastic force of the elastic member 33, the pressing portion 311 moves upwards, the abutting portion 312 moves downwards, so that the magnetic rod moves relative to the electromagnetic coil in the direction of extending into the electromagnetic coil, current is generated in the electromagnetic coil, a second electric signal is emitted through the signal emitting device 32, and the controller receives the second electric signal and controls the brake device to brake, as shown in fig. 2; when the push handle 11 is held by a human hand, the pressing portion 311 moves downward, the abutting portion 312 moves upward, so that the magnetic rod moves relative to the electromagnetic coil in a direction of pulling out the electromagnetic coil, so that current is generated in the electromagnetic coil, the signal transmitting device 32 transmits a first electric signal, and the controller receives the first electric signal and controls the brake device to be released, as shown in fig. 3.

This induction system is from generating electricity induction system, grips through the staff and pushes away handle 11 or leaves and push away the mechanical system that 11 messenger produced relative motion between layer 31 and the signal emission device 32, can make induction system produce instantaneous current and send electrical signal, like this, need not to dispose external power source interface or battery and supply power to induction system for this children's shallow simple structure, convenient to use, and energy-concerving and environment-protective. And need not to set up sensor device alone to the manufacturing cost of reducible this children's shallow can avoid appearing causing the problem that can't realize automatic braking because of the sensor damages.

The signal emitting device 32 is wirelessly connected with the controller, so that wiring in the cart frame 1 can be avoided, the structure of the cart frame 1 is simplified, and the cart frame 1 is convenient to produce and assemble.

The induction system is at least arranged on one of the left side and the right side of the push handle 11, and preferably, the induction system is arranged on both the left side and the right side of the push handle 11.

The brake device comprises a brake disc fixedly arranged on the rear wheel component and a brake pin movably arranged on the rear connecting rod 12 and capable of being matched with or separated from the brake disc, when the brake device is in a brake state, the brake pin is matched with the brake disc, when the brake device is in a brake release state, the brake pin is separated from the brake disc in a matching manner, the brake device further comprises a driving device used for driving the brake pin to move and matched with and/or separated from the brake disc, and the driving device is electrically connected with the controller.

In a specific embodiment, the driving device comprises a motor fixedly arranged on the rear connecting rod 12 and a linkage structure arranged between the motor and the brake pin, and the motor is electrically connected with the controller. When the controller receives a second electric signal sent by the signal transmitting device 32, the controller controls the motor to start, a motor shaft of the motor rotates, the linkage structure drives the brake pin to move towards the direction close to the brake disc and is matched with the brake disc, and the brake device is in a brake state. When the controller receives a first electric signal sent by the signal transmitting device 32, the controller controls the motor to start, a motor shaft of the motor rotates reversely, the linkage structure drives the brake pin to move towards the direction far away from the brake disc until the brake pin is disengaged from the brake disc, and the brake device is in an unlocking state.

In another embodiment, the driving device includes an electromagnetic induction device fixedly disposed on the rear link 12, and the electromagnetic induction device includes an electromagnet and a magnet, the magnet is mechanically connected to the brake pin, and the electromagnet is electrically connected to the controller. When the controller receives a second electric signal sent by the signal transmitting device 32, the controller sends the electric signal to the electromagnet, the electromagnet is electrified, the magnetism of the joint of the electromagnet and the magnet is the same, and the electromagnet and the magnet repel each other, so that the magnet drives the brake pin to move towards the direction close to the brake disc and is matched with the brake disc, and the brake device is in a brake state. When the controller receives a first electric signal sent by the signal transmitting device 32, the controller does not send a signal to the electromagnet, the electromagnet is powered off, the brake pin and the magnet move in the direction far away from the brake disc under the action of the spring until the brake pin and the magnet are disengaged from the brake disc, and the brake device is in an unlocking state.

The specific structure of the brake device is not limited to the above-described embodiment, and other forms may be adopted.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.