TWM630825U - Electromagnetic Brake System - Google Patents

Abstract

An electromagnetic braking system, which is installed on a bicycle, wherein the bicycle includes a vehicle body and two wheels pivoted on the vehicle body; the electromagnetic braking system includes: a disc, fixed on the wheel, and connected with the vehicle body. The wheels rotate synchronously; an electromagnetic device is arranged on the vehicle body and adjacent to the disc, the electromagnetic device can generate a magnetic field to generate an electromagnetic resistance to the disc; and a control device is arranged on the vehicle body and connected to In the electromagnetic device, the control device is operated by a user to control the electromagnetic device to generate the magnetic field and to control the magnitude of the magnetic field. Thereby, when the disc is in the moving state, operating the control device can drive the electromagnetic device, so as to apply the electromagnetic resistance to the disc, so that the disc and the The wheel slows down.

Description

Electromagnetic Brake System

This creation is related to the braking system of bicycles, especially an electromagnetic braking system that uses electromagnetic resistance for braking.

Press, the most common braking methods on today's vehicles are disc brakes and drum brakes. These two braking methods are usually used to make the pads (also known as brake pads or brake pads) in direct contact with the disc or brake drum connected to the wheel shaft, thereby generating frictional resistance to gradually stop the disc or brake drum from moving. Furthermore, the traveling vehicle is stopped. Since these two types of brakes are stopped by contact during the braking process, high friction and heat will be generated between the pads and the disc or the brake drum. Long-term use will easily lead to wear of the pads and even cause The entire braking system failed. Therefore, how to prolong the life of the general brake wear, thereby reducing the number of replacements of the pads to improve convenience and save costs, is one of the urgent issues to be solved by the industry in the related field.

Electromagnetic braking is an emerging braking technology in recent years. Through the principle of electromagnetic induction, electromagnetic resistance can be generated without contact, which can be used to prevent the disc from continuing to move and gradually stop the vehicle from moving. Since electromagnetic brakes do not require direct contact, the problems of high heat consumption and high wear and tear of traditional brakes do not occur, so they are mostly used on high-speed vehicles such as maglev trains or electric vehicles. So far, electromagnetic brakes are mostly used for electric bicycles as auxiliary brakes, and electromagnetic brakes have not been deployed on non-electric bicycles such as general road bikes or mountain bikes.

The main purpose of this creation is to provide an electromagnetic brake system, which can effectively improve the problems of heat exhaustion and high wear caused by the brake system of a general bicycle.

In order to achieve the above-mentioned creative purpose, the present invention discloses an electromagnetic braking system, which is installed on a bicycle, wherein the bicycle includes a body and two wheels pivoted on the body; the electromagnetic braking system includes: a disc , which is fixed to the wheel and rotates synchronously with the wheel; an electromagnetic device, located on the vehicle body and adjacent to the disc, the electromagnetic device can generate a magnetic field to generate an electromagnetic resistance to the disc; and a control The device is arranged on the vehicle body and connected to the electromagnetic device. The control device is operated by a user to control the electromagnetic device to generate the magnetic field and control the size of the magnetic field.

In one embodiment, the electromagnetic device is disposed on a side of the disc opposite to the wheel, so that the wheel and the electromagnetic device are located on opposite sides of the disc.

In one embodiment, the control device further includes a power supply device disposed on the vehicle body and electrically connected to the electromagnetic device for being driven by the control device and outputting electrical energy to the electromagnetic device.

In one embodiment, the electromagnetic device has a base, a magnetically conductive portion and a coil portion; the base is disposed on the vehicle body; one end of the magnetically conductive portion is connected to the base, and the other end faces the plate vertically One side of the disk; the coil part is sleeved on the periphery of the magnetic conductive part and is electrically connected to the power supply device; the coil part can receive the electric energy output by the power supply device and make the magnetic conductive part act on the disk. the magnetic field.

In one embodiment, an end of the magnetic conductive portion close to the disk is spaced from the disk by a predetermined distance.

In one embodiment, the vehicle body has a mandrel passing through the center of the wheel and the vehicle body for pivotally connecting the wheel to the vehicle body; the center of the base further has a hollow connecting portion for the One end of the mandrel is passed through to fix the base on the mandrel.

In one embodiment, an electromagnetic braking system is installed on a bicycle, wherein the bicycle includes a vehicle body and two wheels pivoted on the vehicle body, the electromagnetic braking system includes: a disc fixed on the vehicle body. The wheel rotates synchronously with the wheel; an electromagnetic device is installed on the vehicle body and adjacent to the disc, the electromagnetic device can generate a magnetic field to generate an electromagnetic resistance to the disc; a friction device can The moving mode is arranged on the vehicle body, the friction device can contact the disc after moving to generate a frictional resistance to the disc; and a control device is arranged on the vehicle body and connected to the electromagnetic device and the friction device, It is operated by a user to control the electromagnetic device to generate the magnetic field and to control the movement of the friction device.

In one embodiment, the friction device has two pads, which are arranged on opposite sides of the disc and are separated from the disc; the two pads can be driven by the control device to contact the disc respectively. two sides, so as to exert the frictional resistance on both sides of the disc. The control device further includes a transmission device for transmitting the kinetic energy input to the control device to the friction device to drive the two to make the plate contact the disc.

In one embodiment, the control device further includes a transmission device for transmitting the kinetic energy input to the control device to the friction device to drive the two to make the plate contact the disc.

The effect achieved by this creation lies in the relative movement of the magnetic field generated by the electromagnetic device and the disk, so that the electromagnetic device correspondingly generates an electromagnetic resistance to act on the disk, so that the disk gradually stops from the motion state , in order to achieve the effect of bicycle braking. Since the electromagnetic resistance acts on the disc without heat consumption and wear, the invention can effectively solve the problems of heat consumption and high wear of conventional brakes, relatively speaking, the maintenance cost of the brakes can be saved and the service life of the brakes can be improved. .

Hereinafter, according to the purpose and effect of the present creation, preferred embodiments are listed and described in detail with the drawings.

Please refer to FIG. 1, which shows a bicycle, including a body 10 and a wheel 12 connected to the front side of the body 10. The body 10 has a spindle 14 passing through the center of the wheel 12 and the bicycle The body 10 is used for pivotally connecting the wheel 12 to the vehicle body 10 so that the wheel 12 can rotate relative to the vehicle body 10 . An electromagnetic braking system provided by the first preferred embodiment of the present invention acts on the wheel 12 on the front side of the vehicle body 10 . In another embodiment, the electromagnetic braking system can also act on a wheel (not shown) connected to the rear side of the vehicle body 10 , or act on the two wheels on the front and rear sides at the same time. The electromagnetic braking system mainly includes a disc 20 , an electromagnetic device 30 and a control device 40 . in:

Please refer to FIG. 2 and FIG. 3 , the disc 20 is fixed on the axial outer side of the wheel 12 , and is in the same motion state or a stop state as the wheel 12 . The motion state is defined as a state in which the wheel 12 and the disc 20 rotate at the same time; the stop state is defined as a state in which the wheel 12 and the disc 20 stop at the same time.

The electromagnetic device 30 is disposed on one side of the disc 20 opposite to the wheel 12 , so that the wheel 12 and the electromagnetic device 30 are located on different sides of the disc 20 . The electromagnetic device 30 has a base 32 , two magnetic conductive parts 34 and two coil parts 36 . The base 32 is disposed on the axial outer side of the disc 20 and is parallel to the disc 20 . In the present embodiment, the base 32 is a disc-shaped structure with a hollow connecting portion 320 in the center for the spindle 14 to pass through, so that the base 32 can be kept fixed relative to the disc 20 . The two magnetically conductive portions 34 are located on opposite sides of the base 32 respectively, one end is connected to the base 32, the other end is perpendicular to one side of the disk 20, and one end close to the disk 20 is connected to the disk 20. 20 are separated by a predetermined distance, and the magnetic conductive portion 34 is made of a magnetizable material (eg, iron). The two coil portions 36 are respectively sleeved on the periphery of the two magnetic conductive portions 34 . Further, the two coil portions 36 are annular enameled coils formed by two enameled wires wound around the periphery of the two magnetic conductive portions 34 respectively. Therefore, when the two coil parts 36 are supplied with current, the two magnetic conductive parts 34 wound by the two coil parts 36 can be magnetized by the current magnetic effect, thereby generating a magnetic field that can act on the disk 20 .

The control device 40 is disposed on the vehicle body 10 and is electrically connected to the electromagnetic device 30 , and can be driven by an external force to control the electromagnetic device 30 to generate a magnetic field. In addition, the control device 40 further includes a power supply device 50 disposed on the vehicle body 10 and electrically connected to the two coil portions 36 of the electromagnetic device 30 . In this embodiment, the power supply device 50 is a device that can store and output electrical energy, such as a battery or a battery, and can transmit the stored electrical energy to the electromagnetic device 30 . In another embodiment, the power supply device 50 can also be a device with a power generation function, such as a power generation hub mounted on the wheel 12 , and transmits the power generated by the power generation to the electromagnetic device 30 . In this embodiment, the control device 40 is provided on a handle of the vehicle body 10 . The power supply device 50 can be electrically controlled to output corresponding electrical energy to the electromagnetic device 30 according to the amount of kinetic energy imparted to the handle by the user, so as to change the magnitude of the magnetic field of the electromagnetic device 30 .

The present invention, which is formed by combining the above-mentioned component structures, provides an electromagnetic braking system. Its practical application is as follows:

Please refer to FIG. 3 to FIG. 5 , when the bicycle is running, the wheel 12 and the disc 20 are in the moving state at the same time. When a user wants to stop from the motion state, he can operate the control device 40 (the action in this embodiment is to press the handle) to control the power supply device 50 to transmit the stored electrical energy to the two of the electromagnetic device 30 Coil portion 36 . Due to the structure of the two coil portions 36 , the two magnetically conductive portions 34 become a magnetic substance due to the current magnetic effect, and generate two induced magnetic fields 60 perpendicular to the disk 20 . Since the two induced magnetic fields 60 act on the disk 20 in the same manner, one of the induced magnetic fields 60 will be described below. First, a front side area 22 is defined as the area on the disk 20 that is about to approach the induced magnetic field 60 along its rotational direction; a rear side area 24 is defined as the area on the disk 20 that is about to move away from the induced magnetic field 60 along its rotational direction Area. According to Faraday's law, the induced magnetic field 60 that appears suddenly can be regarded as a magnet approaching the disk 20 , so the magnetic field changes will cause the disk 20 to form a plurality of eddy currents 220 and 240 in the front region 22 and the rear region 24 respectively (ie, swirling induced current). According to Lenz's law, the eddy currents 220 formed in the front region 22 of the disk 20 will generate a front induced magnetic field opposite to the induced magnetic field 60 to resist the increased magnetic flux due to the proximity of the induced magnetic field 60; the The eddy currents 240 formed in the rear region 24 of the disk 20 will generate a rear induced magnetic field in the same direction as the induced magnetic field 60 to compensate for the reduced magnetic flux due to the distance from the induced magnetic field 60 . Since the direction of the front-side induced magnetic field of the front-side region 22 of the disk 20 is opposite to the direction of the induced magnetic field 60 generated by the electromagnetic device 30 , the electromagnetic device 30 forms a repulsive force to the front-side region 22 of the approaching disk 20 , preventing the front area 22 of the disk 20 from continuing to approach the induced magnetic field 60 ; in addition, the rear induced magnetic field of the rear area 24 of the disk 20 is in the same direction as the induced magnetic field 60 generated by the electromagnetic device 30 , Therefore, the electromagnetic device 30 forms a suction force on the rear area 24 of the disc 20 that is moving away, preventing the rear area 24 of the disc 20 from continuing to move away. The combination of the repulsive force and the attractive force can be regarded as an electromagnetic resistance acting on the disk 20 generated by the electromagnetic device 30 . Under the continuous action of the electromagnetic resistance, the disc 20 is continuously subjected to resistance against the rotation direction and gradually changes from the motion state to the stop state, thereby causing the wheels 12 to decelerate synchronously, and finally stop the bicycle. Since the electromagnetic device 30 is not in direct contact with the disc 20 , the electromagnetic braking system can achieve a braking mode with no heat loss and no wear. It should be added that the control device 40 may increase the output power of the power supply device 50 as required, so as to further enable the electromagnetic device 30 to generate greater electromagnetic resistance. In addition, in this embodiment, the number of the magnetic conductive portion 34 and the coil portion 36 of the electromagnetic device 30 is two. In another embodiment, the magnetic conductive portion 34 and the magnetic conductive portion 34 of the electromagnetic device 30 and The number of the coil portions 36 or the number of coil winding turns in each of the coil portions 36 is increased to generate greater electromagnetic resistance.

Please refer to FIG. 6 , the electromagnetic brake system provided by the second preferred embodiment of the present invention has a structure similar to that of the first preferred embodiment, but this embodiment further includes a friction device 70 . In this embodiment, the friction device 70 is two pads (not shown) disposed on both sides of the disc 20 , which can be driven to contact (clamp) both sides of the disc 20 . The control device 40 further includes a transmission device 80 connecting the control device 40 and the friction device 70 for receiving the kinetic energy input from the control device 40 and driving the friction device 70 to move. In this embodiment, the transmission device 80 is a hydraulic transmission structure, which can be hydraulically controlled by the control device 40; in another embodiment, the transmission device 80 can be a mechanical transmission structure or other equivalent transmission structure . Therefore, by operating the control device 40, kinetic energy can be transmitted to the two pads through the transmission device 80, so that the two pads contact the disc 20, thereby providing a frictional resistance to prevent the disc 20 from rotating along the The direction continues to move, bringing the wheel 12 from the moving state to the stopped state. By using the aforementioned friction device 70 in cooperation with the electromagnetic device 30 , the frictional resistance and the electromagnetic resistance can be applied to the disc 20 at the same time, compared to bicycles with only the friction device 70 or only the electromagnetic device 30 , which can provide stronger braking force.

To sum up, in the electromagnetic braking system disclosed in this work, the power supply device 50 is driven by the control device 40 to output electric energy to the electromagnetic device 30 , so that the electromagnetic device 30 generates an induced magnetic field, and the induced magnetic field communicates with the electromagnetic device 30 . The relative movement of the disc 20 causes the electromagnetic device 30 to correspondingly generate an electromagnetic resistance to act on the disc 20 , so that the disc 20 gradually stops from the moving state, so as to achieve the effect of bicycle braking. Since the electromagnetic resistance acts on the disc 20 without heat consumption and wear, the present invention can effectively solve the problems of heat consumption and high wear of conventional brakes, relatively speaking, the maintenance cost of the brakes can be saved and the use of the brakes can be improved. life.

The above are the preferred embodiments and design drawings of the present creation, but the preferred embodiments and design drawings are only examples, and are not intended to limit the scope of rights of the creation technique. The implementation of the scope of rights covered by the content of "Application for Patent Scope" does not deviate from the scope of this creation and is the scope of the applicant's rights.

10: Body 12: Wheels 14: Mandrel 20: Disc 22: Front area 24: Rear side area 30: Electromagnetic device 32: Pedestal 34: Magnetically conductive part 36: Coil part 40: Control device 50: Power supply device 60: Induced magnetic field 70: Friction device 80: Transmission 220: Eddy Current 240: Eddy Current 320: Connector

Figure 1 is a side view of the first preferred embodiment of the present invention. Figure 2 is a front view of the first preferred embodiment of the present invention. FIG. 3 is a partial enlarged view of the dotted line in FIG. 2 . FIG. 4 is a block diagram of the first preferred embodiment of the present invention. Fig. 5 is a schematic diagram of the first preferred embodiment of the present invention, showing the state in which the magnetic field of the electromagnetic device acts on the disk. FIG. 6 is a block diagram of the second preferred embodiment of the present invention.

10: Body

12: Wheels

20: Disc

30: Electromagnetic device

40: Control device

50: Power supply device

Claims (9)

An electromagnetic braking system, which is installed on a bicycle, wherein the bicycle includes a vehicle body and two wheels pivoted on the vehicle body; the electromagnetic braking system includes: a disc, which is fixed to the wheel and rotates synchronously with the wheel; an electromagnetic device, disposed on the vehicle body and adjacent to the disk, the electromagnetic device can generate a magnetic field to generate an electromagnetic resistance to the disk; and A control device is arranged on the vehicle body and connected to the electromagnetic device. The control device is operated by a user to control the electromagnetic device to generate the magnetic field and control the size of the magnetic field. The electromagnetic braking system as claimed in claim 1, wherein the electromagnetic device is disposed on a side of the disc opposite to the wheel, so that the wheel and the electromagnetic device are located on opposite sides of the disc. The electromagnetic braking system of claim 1, wherein the control device further comprises a power supply device disposed on the vehicle body and electrically connected to the electromagnetic device for being driven by the control device and outputting electrical energy to the electromagnetic device. The electromagnetic braking system according to claim 3, wherein the electromagnetic device has a base, a magnetically conductive part and a coil part; the base is arranged on the vehicle body; one end of the magnetically conductive part is connected to the base, The other end is perpendicular to one side of the disk; the coil part is sleeved on the periphery of the magnetic conductive part and is electrically connected to the power supply device; the coil part can receive the electric energy output by the power supply device and make the magnetic conductive part generate the magnetic field acting on the disc. The electromagnetic braking system according to claim 4, wherein an end of the magnetic conductive portion close to the disc is spaced from the disc by a predetermined distance. The electromagnetic braking system of claim 4, wherein the vehicle body has a mandrel passing through the center of the wheel and the vehicle body for pivoting the wheel to the vehicle body; the center of the base further has a hollow space The connecting part is provided for one end of the mandrel to pass through to fix the base on the mandrel. An electromagnetic braking system, which is installed on a bicycle, wherein the bicycle includes a vehicle body and two wheels pivoted on the vehicle body; the electromagnetic braking system includes: a disc, which is fixed to the wheel and rotates synchronously with the wheel; an electromagnetic device disposed on the vehicle body and adjacent to the disk, the electromagnetic device can generate a magnetic field to generate an electromagnetic resistance to the disk; a friction device arranged on the vehicle body in a movable manner, and the friction device can contact the disc after moving to generate a frictional resistance to the disc; and A control device is arranged on the vehicle body and connected to the electromagnetic device and the friction device, and is operated by a user to control the electromagnetic device to generate the magnetic field and to control the movement of the friction device. The electromagnetic braking system as claimed in claim 7, wherein the friction device has two pads, which are disposed on opposite sides of the disc and are separated from the disc; the two pads can be driven by the control device to The two sides of the disc are respectively contacted, so as to exert the frictional resistance on the two sides of the disc. The electromagnetic braking system of claim 8, wherein the control device further comprises a transmission device for transmitting the kinetic energy input to the control device to the friction device to drive the two to make the disc contact the disc.

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