TWI579178B - Automatic brake device for hand pushing - Google Patents

Description

Automatic brake device for hand-carrying vehicle

The present invention relates to an automatic braking device for a hand pushing vehicle, including but not limited to a baby carriage, a wheelchair, a cart, a push bed, a pushable stretcher, and the like.

With regard to hand-pushing vehicles, such as baby carriages, wheelchairs, carts, push-pull beds, push-on stretchers, etc., the basic structure mainly includes a frame, a carrier that is combined with the frame for carrying or carrying people, A push rod coupled to the frame and a plurality of rollers coupled to the bottom of the frame. A pusher's hand can hold the pusher bar to apply force to roll the roller, thereby controlling the hand pusher to move forward or backward. A potential safety issue with the hand-pushing vehicle is that when the pusher's hand is not held by the pusher bar, the hand-pushing vehicle is in an independent state that is not controlled by the pusher, which may be caused by factors such as ground tilting. The scroll wheel scrolls so that the hand-pushing vehicle moves uncontrolled, even causing damage due to uncontrolled movement direction and speed.

In order to solve this problem, it is necessary to add a brake device to the hand-carrying vehicle. At present, the brake devices used are mostly passive brakes, such as handcuffs and ankles. Handcuffs refer to the braking mechanism that activates or deactivates the brake device by manually holding or releasing the brake lever. The ankle is used to activate or deactivate the braking mechanism by pedaling or releasing the brake pedal. However, these passive braking devices must be "remembered" by the pusher of the hand-carrying vehicle. If the driving system is inadvertently not operating the braking system, the hand-carrying vehicle will be in an uncontrolled independent state, moving. Problems with out of control of direction and speed still occur.

SUMMARY OF THE INVENTION The object of the present invention is to provide an automatic braking device for a hand-pushing vehicle for solving the safety problem of the above-described vehicle-free vehicle or the hand-carrying vehicle with a passive braking device.

The automatic braking device for the hand pushing device of the present invention comprises: a controller assembly mounted on the frame of the hand pushing device; and a touch sensing module mounted on the grip portion of the frame of the hand pushing carrier The touch sensing module is coupled to the controller assembly; a brake control device mounted on the bottom of the frame of the hand push vehicle for controlling the brake device of one of the left and one right wheels of the hand pushing vehicle, The brake control device is coupled to the controller assembly; a power module mounted to the frame of the push carrier, the power module coupled to the controller assembly, the touch sensing module, and the brake control device; A power sensing module coupled to the controller assembly for sensing the amount of power of the power module.

Further, the automatic braking device further comprises a fingerprint identification module, the fingerprint identification module is coupled with the controller assembly; and the user's hand is in the case that the brake control device starts to lock the left wheel and the right wheel The fingerprint sensing module is contacted by the fingerprint recognition module, and the fingerprint is recognized by the fingerprint recognition module. The controller assembly commands the brake control device to release the brake lock.

Further, the automatic braking device further includes a distance detecting module, the distance detecting module is coupled to the controller assembly, and the distance detecting module comprises a receiving unit, a transmitting unit and a warning unit; The receiving unit and the transmitting unit are respectively disposed on the pusher carrier and the pusher of the pusher carrier; the receiving unit senses a signal of the launching unit, and when the pusher leaves the hand-pushing carrier to reach a threshold distance, When the receiving unit does not receive the signal of the transmitting unit, the warning The unit issues a warning that the controller assembly commands the brake control to initiate a brake lock.

Further, the power sensing module further includes a power warning device, and when the power sensing module senses that the power module is low to a preset value, the power warning device emits a light or sound signal. To remind you to replace the battery or charge.

Further, the automatic braking device of the hand pushing device further comprises a speed sensor coupled to the controller assembly and sensing the rotation speed of the left wheel or the right wheel, when the speed sensor When it is sensed that the rotational speed of the left or the right wheel is equal to or greater than a preset value, the controller assembly commands the brake control device to activate the brake device.

The function of the present invention: the operation of the automatic braking device of the hand-pushing vehicle of the present invention is mainly to sense whether the hand of one of the pusher carriers touches the holding portion, and when the hand of the pusher contacts the holding When the driver's hand leaves the grip, the brake mechanism is automatically activated to avoid the problem that the moving direction and speed are out of control when the hand-pushing vehicle is in an uncontrolled independent state.

Further identifying the specific pusher of the hand-pushing vehicle through fingerprint recognition can unlock the brake and improve the safety of use.

Further, through the distance detection, the distance between the hand-pushing vehicle and the pusher is controlled, so that the hand-pushing vehicle does not deviate from the pusher's line of sight and the reachable range, thereby improving the safety of use; and once the vehicle is pushed and pushed When the distance is up to a certain distance, the braking mechanism is activated to maintain the safety of the hand-carrying vehicle.

When the speed sensor senses that the speed of the left wheel or the right wheel is equal to or greater than a preset value to activate the brake device, the brake control device controls the brake device to brake in a progressive braking mode, so that the hand push vehicle Gradually stop, without the danger of rushing over.

10‧‧‧Hand push vehicle

11‧‧‧Frame

12‧‧‧ grip

13‧‧‧Revolver

131‧‧‧Round clearance

14‧‧‧Right wheel

141‧‧‧Round clearance

15‧‧‧Collection area

20‧‧‧Controller assembly

30‧‧‧Touch sensor module

40‧‧‧ brake control device

41‧‧‧Stepper motor

411‧‧‧ Hall sensor

42‧‧‧ cam

421‧‧‧ magnet

43‧‧‧Left brake lever

431‧‧‧Magnetic body

44‧‧‧ Right-hand lever

441‧‧‧ magnetic body

45‧‧‧Return spring

46‧‧‧Return spring

47‧‧‧ positioning ring

48‧‧‧ positioning ring

49‧‧‧ Fixed seat

50‧‧‧煞车器

51‧‧‧ Turntable

60‧‧‧Power Module

70‧‧‧Power Sensing Module

71‧‧‧Power Alert

80‧‧‧Speed sensor

85‧‧‧Fingerprint Identification Module

90‧‧‧ Distance Detection Module

91‧‧‧ Receiving unit

92‧‧‧Emission unit

93‧‧‧Warning unit

The first figure is a block diagram of the automatic braking device of the present invention.

The second figure is a schematic diagram of the invention implemented in a hand pushing vehicle (baby car).

The third figure is one of the plane and action diagrams of the brake control device of the present invention.

The fourth figure is the second schematic diagram of the plane and action of the brake control device of the present invention.

The fifth figure is one of the schematic diagrams of the Hall sensor and the cam of the brake control device of the present invention.

The sixth figure is the second schematic diagram of the Hall sensor and the cam of the brake control device of the present invention.

In order to facilitate the explanation of the central idea expressed in the column of the above novel content, it is expressed by a specific embodiment. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above.

As shown in the first figure and the second figure, the automatic braking device of the hand pushing device of the present invention comprises: a controller assembly 20 mounted on the frame 11 of the one-hand push carrier 10; and a mounting on the hand pushing device 10 The touch sensing module 30 of the grip portion 12 of the frame 11 is coupled to the controller assembly 20; the coupling includes various electrical connections and wired and wireless transmission connections; The bottom of the frame 11 of the hand-pushing vehicle 10 is used to control the brake device 40 (described in the third and fourth figures) of the left and right wheels 13 and 14 of the hand-pushing vehicle 10, which is controlled by the brake control device 40. The controller assembly 20 is coupled to the controller assembly 20; the coupling includes various electrical connections and wired and wireless transmission connections; and a power module 60 mounted to the frame 11 of the trolley carrier 10, the power module 60 Coupled with the controller assembly 20, the touch sensing module 30, and the brake control device 40; A power sensing module 70 coupled to the controller assembly 20 for sensing the amount of power of the power module 60.

In the second figure, the hand pushing vehicle 10 of the present invention is described as a frame of a stroller, but the hand pushing vehicle 20 includes but is not limited to a baby carriage, a wheelchair, a push cart, a push bed, and a pushable stretcher. . The controller assembly 20, the power module 60, and the power sensing module 70 are assembled in the collection area 15 of the frame 11 of the hand-pushing vehicle 10.

The operation of the automatic braking device of the hand-pushing vehicle of the present invention mainly senses whether the hand of one of the pusher carriers 10 is in contact with the holding portion 12 when the hand of the pusher contacts the holding portion 12 The brake mechanism is released, and the brake mechanism is automatically activated when the pusher's hand leaves the grip portion 12.

When the pusher's hand touches the grip portion 12, the touch sensing module 30 sends an induction signal to the controller assembly 20, and the controller assembly 20 reads the sensing signal and commands the brake control device 40. The braking mechanism of the brake device 50 is released, so that the left wheel 13 and the right wheel 14 can be rolled, and the hand pushing vehicle 10 is controlled to move by the pusher. When the pusher's hand leaves the grip portion 12, the touch sensing module 30 is released without any sensing signal, and the controller assembly 20 commands the brake control device 40 to activate the brake device without acquiring the sensing signal. In the braking mechanism of 50, the left wheel 13 and the right wheel 14 are restricted by the brake device 50 and cannot be rolled, so that the hand pushing vehicle 10 is restricted to the original position without being arbitrarily moved without being separated from the pusher.

The touch sensing module 30 includes, but is not limited to, a capacitive touch module or a resistive touch module.

A primary battery or a secondary battery can be selected for the power module 60.

The power sensing module 70 further includes a power warning device 71. When the power sensing module 70 senses that the power of the power module 60 is low to a preset value, the battery warning device 71 sends out a power warning device 71. A light or audible signal to remind the user that the battery should be replaced or charged. In the present invention, the battery indicator 71 is an LED lamp that is mounted to the grip portion 12 of the hand carrier 10.

The brake control device 40 is attached to the frame 11 of the hand carrier 10 through a fixing seat 49 as shown in the third to fourth figures. The brake control device 40 includes a stepping motor 41 fixed to the fixing base 49 and coupled to the controller assembly 20; a cam 42 coupled to the pivoting shaft of the stepping motor 41; respectively passing through the fixing base 49 and a right-hand lever 43 and a right-hand lever 44 that are vertically displaceable in the fixed seat 49 by the rotation of the cam 42; the return springs 45, 46 respectively pivoted to the left and right brake levers 43 and 44 One end of the return springs 45, 46 abuts against the fixing seat 49, and the other end abuts against the positioning rings 47, 48 fixed to the left brake lever 43 and the right brake lever 44; the left brake lever 43 and the right brake The rod 44 is parallel to the axles of the left and right wheels 13 and 14, and its rod end corresponds to the brake 50 mounted in the left and right wheels 13 and 14. The brake device 50 is an electromagnetic brake, and the rod ends of the left brake lever 43 and the right brake lever 44 have magnetic bodies 431, 441.

When the pusher's hand is separated from the grip portion 12, the touch sensing module 30 is released without any sensing signal, and the controller assembly 20 commands the stepping motor 41 to rotate a predetermined angle without acquiring the sensing signal. (90 degrees), the axis of the stepping motor 41 drives the cam 42 to rotate by a predetermined angle, and the cam 42 contacts and pushes the left and right brake levers 43 and 44 to the corresponding left and right wheels 13 and right wheels. The movement is stopped until the cam 42 pushes the left and right brake levers 43 and 44 at the highest point of its working curve. The brake rod moving to the left wheel 13 and the right wheel 14 passes through the magnetic body 431, 441 of the rod end thereof to approach the turntable 51 of the electromagnetic brake 50. The left brake lever 43 and the right brake lever 44 can make the electromagnetic type by electromagnetic induction principle. The turntable 51 of the brake 50 is changed from the rotating state to the stopped state, or is restricted in the stationary state to be unable to rotate, thereby locking the left wheel 13 and the right wheel 14.

When the pusher's hand touches the grip portion 12, the touch sensing module 30 sends a sensing letter. No. to the controller assembly 20, the controller assembly 20 reads the sensing signal and commands the stepping motor 41 to rotate a predetermined angle (90 degrees) or a predetermined angle (90 degrees). The axis of the stepping motor 41 drives the cam 42 to rotate, so that the highest point of the working curve of the cam 42 is disengaged from the left and right brake levers 43 and 44, and the spring force of the return springs 45, 46 is matched. The left brake lever 43 and the right brake lever 44 are pushed back to the original position, disengaged from the corresponding brake device 50, and the brake mechanism of the brake device 50 is released, so that the left wheel 13 and the right wheel 14 are rolled.

As shown in the fifth and sixth figures, if the above stepping motor is in the open loop control, the actual rotation cannot be fed back (it is impossible to know whether it actually turns to the position after the rotation), so the Hall sensor can be used to detect The position where the stepper motor rotates. The Hall sensor 411 is mounted on the fixed seat 49 and can be actuated by the highest point of the working curve of the cam 42 . The magnet 421 is mounted at the highest point of the working curve of the cam 42 to make the highest point of the working curve turn to the predetermined point. The magnet 421 triggers the Hall sensor 411 at an angle, and the signal of the Hall sensor 411 is transmitted to the controller assembly 20, which commands the stepper motor 41 to stop rotating.

Another mode for realizing the braking mechanism is achieved by the rim gaps 131, 141, as shown in the second figure, that is, when the left and right brake levers 43 and 44 are moved to the left and right wheels 14, respectively, the rim is extended into the rim. The gaps 131, 141, thereby catching the left wheel 13 and the right wheel 14, make it impossible to rotate.

In addition, as shown in the first figure, the hand-carrying automatic braking device of the present invention further includes a rotation speed sensor 80 coupled to the controller assembly 20 for sensing the left wheel 13 or the right wheel 14. When the rotational speed sensor 80 senses that the rotational speed of the hand pushing vehicle 10 is equal to or greater than a predetermined value, the stepping motor 41 is commanded to rotate by a predetermined angle (90 degrees), so that the cam 42 is Its working curve contacts and pushes the left and right brake levers 43 and 44 to the corresponding left and right wheels 14 and 14 until the cam 42 pushes the left and right brake levers 43 and right at the highest point of its working curve. The rod 44 is stopped, thereby activating the brake device 50 to lock the left wheel 13 and the right wheel 14. Since the left brake lever 43 and the right brake lever 44 are displaced by the working curve of the cam 42, the left brake lever 43 and the right brake lever 44 are asymptotically moved with respect to the brake 50, and the asymptotic movement can be controlled. The brake device 50 (electromagnetic brake) produces a progressive braking mode. When the hand-carrying vehicle quickly falls on the slope due to loss of control, the progressive braking mode can cause the hand-carrying vehicle to gradually stop without rushing. The danger of falling over.

In the first figure, the present invention further includes a fingerprint recognition module 85 coupled to the controller assembly 20. When the brake control device 40 is activated to lock the left wheel 13 and the right wheel 14, the user touches the touch sensor module 30, and the controller assembly 20 activates the fingerprint recognition module 85, and the user needs to further slide the finger The fingerprint recognition area of the fingerprint recognition module 85 passes through the fingerprint recognized and recognized by the fingerprint recognition module 85. The fingerprint recognition module 85 sends an induction signal to the controller assembly 20, and the touch sensing module 30 still senses that the user's hand touches the grip portion 12, and in the case that both the touch sensing module 30 and the fingerprint recognition module 85 generate an induction signal, the controller assembly 20 commands the brake control device 40 to release the brake. locking. On the other hand, if the fingerprint is not recognized, the brake lock state is maintained.

The first aspect of the present invention further includes a distance detecting module 90. The distance detecting module 90 is coupled to the controller assembly 20. The distance detecting module 90 is a radio wave transceiver module, including A receiving unit 91, a transmitting unit 92 and a warning unit 93. One of the receiving unit 91 and the transmitting unit 92 is disposed on the hand pushing vehicle 10, and the other is disposed on a user who pushes the hand pushing vehicle 10. The receiving unit 91 senses the signal of the transmitting unit 92. When the user leaves the hand pushing vehicle 10 for a threshold distance, so that the receiving unit 91 does not receive the signal of the transmitting unit 92, the warning unit 93 sounds a warning. And the controller assembly 20 commands the brake control device 40 to start the brake locking.

10‧‧‧Hand push vehicle

11‧‧‧Frame

12‧‧‧ grip

13‧‧‧Revolver

14‧‧‧Right wheel

15‧‧‧Collection area

30‧‧‧Touch sensor module

40‧‧‧ brake control device

41‧‧‧Stepper motor

43‧‧‧Left brake lever

44‧‧‧ Right-hand lever

49‧‧‧ Fixed seat

71‧‧‧Power Alert

Claims (10)

The utility model relates to an automatic braking device for a hand pushing vehicle, comprising: a controller assembly mounted on a frame of a hand pushing vehicle; and a touch sensing module mounted on a grip portion of the frame of the hand pushing carrier, the touch sensing The module is coupled to the controller assembly; a brake control device mounted on the bottom of the frame of the hand-pushing device for controlling the brake device of one of the left-hand wheels and the right-hand wheel of the hand-pushing vehicle, the brake control device and the brake control device a controller assembly coupled to the power module of the frame of the hand-pushing carrier, the power module coupled to the controller assembly, the touch sensing module, and the brake control device; and a coupling to the control The vehicle assembly is configured to sense a power sensing module of the power module; the brake control device includes a fixed seat fixed to the frame of the hand pushing carrier; a fixed to the fixed seat and the control a stepping motor coupled to the assembly; a cam coupled to the shaft of the stepping motor; a left brake lever that is vertically and horizontally displaceable in the mount by the rotation of the cam And a right-hand lever; separately pivoted a return spring of the left brake lever and the right brake lever, one end of the return spring abuts against the fixed seat, and the other end abuts against a positioning ring fixed to the left brake lever and the right brake lever; the left brake lever and the right The brake lever is parallel to the axles of the left wheel and the right wheel respectively; when a pusher's hand contacts the grip portion, the touch sensing module sends an induction signal to the controller assembly, and the controller assembly commands the The brake control device releases the lock of the brake device to the left wheel and the right wheel; when the pusher's hand leaves the grip portion, the touch sensing module emits no induction signal, and the controller assembly commands the brake control device to start Lock the left wheel and the right wheel. The automatic brake device of the hand-carrying vehicle according to the first aspect of the invention, wherein the left-hand brake lever and the right-hand brake lever are controlled by the cam to move in the direction of the left wheel and the right wheel, the left-hand side The lever and the right brake lever respectively extend into the rim clearance of the left wheel and the right wheel to lock the left wheel and the right wheel. The automatic braking device of the hand-carrying vehicle according to the first aspect of the invention, wherein the left end of the left and the right side of the lever are respectively provided with a magnetic body, and the left wheel and the right wheel are respectively provided with an electromagnetic brake The left brake lever and the right brake lever are controlled by the cam to move in the direction of the left wheel and the right wheel, and the magnetic body limits rotation of the turntable of the electromagnetic brake to lock the left wheel and the right wheel. An automatic braking device for a hand-carrying vehicle according to claim 1, further comprising a fingerprint identification module coupled to the controller assembly; the brake control device starts to lock the revolver and In the case of the right wheel, the user's hand touches the touch sensing module and recognizes the fingerprint through the fingerprint recognition module, and the fingerprint is recognized by the fingerprint recognition module, and the controller assembly commands the brake control device. Unlock the brakes. The automatic braking device of the hand-carrying vehicle of claim 1, further comprising a distance detecting module, the distance detecting module being coupled to the controller assembly, the distance detecting module comprising a receiving unit, a transmitting unit and an alerting unit; the receiving unit and the transmitting unit are respectively disposed on the pusher carrier and the pusher of the pusher carrier; the receiving unit senses a signal of the launching unit, when the pusher leaves The hand pushing vehicle reaches a threshold distance, so that when the receiving unit does not receive the signal of the transmitting unit, the warning unit issues an alert, and the controller assembly commands the braking control device to start the braking lock. The automatic braking device of the hand-carrying device according to the first aspect of the invention, wherein the touch sensing module is an alternative of a capacitive touch module and a resistive touch module. The automatic braking device for a hand-carrying vehicle according to claim 1, wherein the power module is a primary battery or a secondary battery. The automatic braking device of the hand-carrying device according to the first aspect of the invention, wherein the power sensing module further comprises a power warning device, wherein the power sensing module senses that the power module has low power When the preset value is reached, the battery alerter emits a light or sound signal. The automatic braking device of the hand-carrying vehicle of claim 1, further comprising a speed sensor coupled to the controller assembly and sensing the rotation speed of the left wheel or the right wheel, When the speed sensor senses that the speed of the left wheel or the right wheel is equal to or greater than a preset value, the controller assembly commands the brake control device to activate the brake device. An automatic braking device for a hand-carrying vehicle according to claim 1, wherein the hand-pushing vehicle is a baby carriage.