CN200960960Y - bicycle generator - Google Patents

Abstract

The utility model discloses a bicycle power generation facility installs between two installation ends of a bicycle fork, install between the end and erect a wheel frame unit, this bicycle power generation facility includes: the hub comprises a hub seat, a hub shaft passing through the hub seat and erected between mounting ends, a power generation unit arranged in the hub seat and capable of generating three-phase alternating current, a magnet unit surrounding the power generation unit, and a rectifier electrically connected with the power generation unit. Borrow by the three-phase alternating current induced current that this power generation unit of rectifier rectification produced and export the direct current that is not less than 1 ampere again, its electric power except can order about the car light and give out light, more can regard as the electric power source of electrical apparatus such as personal stereo, cell-phone, makes the utility model discloses can make full use of.

Description

bicycle generator

technical field

The utility model relates to a power generating device, in particular to a bicycle power generating device which is installed on a bicycle and utilizes the rotation of the bicycle wheel to generate power.

Background technique

Generally, in the design of a bicycle, two spaced wheels are installed at the bottom of the frame. In order to improve the safety of the bicycle, some bicycles will install a power generating device between the forks of the front wheel. It is electrically connected with a light-emitting element located in front of the car. When the user rides the bicycle, the rotating front wheel will drive the power generating device to generate electricity to make the luminous part emit light, thereby achieving the function of illuminating or warning passers-by, so as to increase driving safety.

However, the induced current output by the traditional bicycle power generating device is alternating current, and this kind of electric power is only suitable for driving the luminous part to emit light, and cannot be used for other purposes. The author of this case makes improvements to this traditional bicycle generator, so that the generator can output DC power for more electrical equipment. The advantage of outputting DC power is that it can be used as a power source for general electronic products. Therefore, when riding a bicycle, the user can connect the power generating device to a small and portable load, such as connecting an MP3 player to listen to music, or connecting a mobile phone to charge , so that the power generating device can play more functions.

In addition, due to the limited rotational speed of bicycle wheels, how to obtain a larger current to supply the above-mentioned mobile phones, MP3 players and other electrical appliances for use is also a major issue.

Utility model content

The purpose of the utility model is to provide a bicycle power generating device which can generate relatively large DC output current to facilitate the utilization of various electrical equipment.

The utility model bicycle power generation device is for electrical connection of an electrical appliance, and is installed between two installation ends of a bicycle fork, and a rotatable wheel frame unit is erected between the installation ends. Consists of: a hub mount, a hub shaft, a power generating unit for generating three-phase alternating current, a magnet unit, and a rectifier.

The hub base is interlockingly combined with the wheel frame unit, and includes a surrounding wall defining a chamber, and two side ring walls connected to the surrounding wall and respectively adjacent to the installation end, the hub shaft is erected Between the side ring walls of the hub base, the hub base is rotatably erected between the mounting ends.

The generating unit is installed in the chamber of the hub base, and includes a fixing part fixed to the hub shaft, and a coil assembly surrounding the fixing part. The fixing part has a base part surrounding the hub shaft, and several winding parts protruding radially from an outer surface of the base part and being surrounded by the coil assembly.

The magnet unit is fixed on the surrounding wall as the hub seat rotates, and can rotate relative to the power generation unit to generate an induced alternating current.

The rectifier is electrically connected with the generating unit, and rectifies the induced alternating current to output direct current.

The beneficial effect of the utility model is that: the three-phase alternating current generated by the power generating unit is rectified to output a direct current of not less than 1 ampere through the rectifier. Since the direct current can be used as the power source of some electrical appliances, the traditional power generation device can be improved. The absence of the ability to output alternating current makes the utility model have the advantages of outputting relatively large direct current, and the electric power can be used by various electric appliances.

Description of drawings

Fig. 1 is a front sectional view showing a preferred embodiment of the utility model bicycle generator;

Fig. 2 is a three-dimensional exploded view showing the corresponding relationship between a power output connector, an adapter and an external electrical appliance of the preferred embodiment;

Figure 3 is a side sectional view of the preferred embodiment;

Figure 4 is a side view of the preferred embodiment;

FIG. 5 is a three-dimensional exploded view showing another type of adapter, the corresponding relationship with the power output connector and the electrical appliance.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

Referring to Fig. 1, 2, 4, a preferred embodiment of the bicycle power generating device of the present utility model, is to be used for supplying the electric power that a lamp (not shown) that is installed on the bicycle emits light, also can supply an electrical appliance 8 electric power simultaneously. connected, the power generating device is installed between two left and right spaced mounting ends 611 of the bicycle fork 61, and a wheel frame unit 62 of a wheel is erected between the mounting ends 611, and the wheel frame unit 62 includes a The ring-shaped wheel frame of the device (not shown in the figure), and several hub steel wires 621 arranged radially and connected between the wheel frame and the power generation device, the power generation device includes: a hub base 1, a hub shaft 2, a power generation unit 3 , a magnet unit 4 , a rectifier 5 , a power output connector 9 , and an adapter 7 .

Referring to Figures 1, 2, and 3, the hub seat 1 of this embodiment is combined with the wheel frame unit 62 in conjunction, and is formed by docking two left and right housings 14, 15. After docking, the hub seat 1 includes: An annular surrounding wall 11 arranged laterally and defining a chamber 111, two side annular walls 12 arranged on the left and right sides of the surrounding wall 11 and respectively adjacent to the mounting end 611 of the fork 61, and two each The bearing 13 is separately arranged on the inner surface of the side ring wall 12, and the side ring wall 12 has a shaft hole 121 that penetrates transversely and communicates with the chamber 111, and a steel wire erecting portion 120 that protrudes from the surrounding wall 11, The steel wire erecting portion 120 has several steel wire holes 122 arranged at equiangular intervals for fixing the hub steel wires 621 .

The hub shaft 2 passes through the shaft hole 121 and the bearing 13 of the hub seat 1, and is fixedly mounted on the mounting end 611 of the bicycle fork 61, and has a main shaft portion 21 corresponding to the chamber 111, And two assembly shaft parts 22 that are combined with the mounting end 611 on the same side of the vehicle fork 61 after passing through the shaft hole 121 .

The power generation unit 3 of this embodiment is used to provide three-phase alternating current induced alternating current, is arranged in the chamber 111 of the hub seat 1, and is fixedly installed with the hub axle 2, including a A fixing part 31 on the main shaft part 21 , and a coil assembly 32 wound on the fixing part 31 .

The above-mentioned fixing part 31 is made of iron material, but when the utility model is implemented, it is not limited that the fixing part 31 must be made of iron material, and the fixing part 31 has a main shaft part 21 surrounding the hub shaft 2 A cylindrical base 311, and at least three winding portions 312 protruding radially from an outer surface of the base 311 at equiangular intervals. The aforementioned coil assembly 32 has several wire segments 321 wrapped around each winding portion 312 .

In order to make the power generation unit 3 generate three-phase alternating current, the fixing member 31 of this embodiment is provided with eighteen winding parts 312, and the coil assembly 32 is composed of three coils and wound on the winding parts 312, The winding method is to wind one of the coils around the first, fourth, seventh, tenth... and other winding parts 312, and the other coil is wrapped around the second, fifth, eighth... and other winding parts 312, and the last The coils are wound around the third, sixth, ninth... and other winding parts 312 . In practice, if the number of winding parts 312 is an integer multiple of three, it can cooperate with the coil assembly 32 to generate three-phase alternating current. According to theoretical calculations, the power generation efficiency of three-phase AC is about 1.7 times that of general single-phase AC, and its output current is relatively stable.

The magnet unit 4 of the present embodiment is arranged side by side by several magnets 41 on an inner surface of the surrounding wall 11 of the hub base 1, and surrounds the entire power generation unit 3, because the magnet unit 4 is fixedly installed around the The wall 11 surrounds the power generating unit 3, so as the hub seat 1 rotates relative to the generating unit 3, the generating unit 3 can generate an induced alternating current by virtue of the induced electromotive force generated between it and the generating unit 3 when it rotates . In actual implementation, the arrangement of the magnet unit 4 is not limited to several magnets 41 arranged side by side, for example, only one magnet 41 may be arranged so as to surround the power generation unit 3 along the surrounding wall 11 of the hub base 1 .

The rectifier 5 is installed in the housing chamber 111 of the hub seat 1 and is electrically connected to the power generation unit 3 for rectifying the induced alternating current and outputting a direct current of not less than 1 ampere. It has three matching coil assemblies 32 AC input terminals 51 for phase-to-phase AC power (only one is shown in FIG. 1 ). In addition, in design, the rectifier 5 can also be installed in other positions of the bicycle, not necessarily installed in the chamber 111 of the hub base 1. At this time, the AC input end 51 of the rectifier 5 needs to be introduced into the chamber 111 and the coil assembly 32 electrical connections.

The power output connector 9 of this embodiment is electrically connected to the rectifier 5 in the hub seat 1, and then passes through the center of the hub shaft 2. A channel through which the power output connector 9 can be drawn out is passed through the shaft 2 .

The adapter 7 of this embodiment is connected to the rectifier 5 through the power output joint 9 outside the hub base 1, has a first connection end 71 electrically connected to the power output joint 9, and a power supply 8 electrically connected to the rectifier 5. The second connection end 72.

When a user rides a bicycle, the rotating wheel will drive the hub base 1 combined with the wheel frame unit 62 to rotate around the hub shaft 2, thus driving the magnet unit 4 located on the hub base 1 relative to the hub shaft 2 and generating electricity. The rotation of the unit 3 causes the coil assembly 32 to generate an induced alternating current and flow it into the rectifier 5 , and then output a direct current after being rectified by the rectifier 5 . Since the utility model uses the high-efficiency three-phase AC induction current to replace the general single-phase AC current, it can output a larger DC current after being rectified by the rectifier 5 .

Referring to Figures 2 and 5, the above-mentioned output direct current can be used as a power source for general electrical appliances 8, so users can carry small and portable electrical appliances 8 with them for use when riding a bicycle.

When the electrical appliance 8 is compatible with the form of the power output connector 9, the electrical appliance 8 can be directly connected to the power output connector 9; The first connecting end 71 of the adapter 7 is electrically connected to the power output connector 9 , and the second connecting end 72 is electrically connected to the electrical appliance 8 , so that electrical appliances 8 of different forms can be electrically connected to the rectifier 5 .

In actual use, you can connect an MP3 player to listen to music, or connect a mobile phone to charge, etc., so that the electric power of the bicycle power generation device can be used to make the headlights shine as traditionally, and its energy can be properly utilized to maximize effect.

In addition, when riding a bicycle at night or on a road with insufficient light, the user will turn on the bicycle lights to improve driving safety, so the direct current flows to the lights to supply the power for them to glow. In use, the direct current must be shunted, that is, a part flows to the lamp, and a part flows to the electric device 8, so that the lamp and the electric device 8 can be used simultaneously. Because the above-mentioned current must be shunted, but generally speaking, when the total output DC current is less than 1 ampere, it is difficult to allow electric appliances 8 such as car lights and mobile phones to operate at the same time, and the utility model uses three-phase AC current to convert it into DC current. Moreover, it provides a DC current of not less than 1 ampere, so that the car lights and electrical appliances can operate normally at the same time, so it can generate a large DC output current, so that the car lights can be connected to other electrical appliances 8 at the same time. to use.

Claims (7)

1. A bicycle power generating device, which is electrically connected to an electrical appliance, and installed between two installation ends of the bicycle fork, a rotatable wheel frame unit is mounted between the installation ends, and the bicycle power generating device includes: a A hub seat that is interlockingly combined with the wheel frame unit, a hub shaft passing through the two side ring walls of the hub seat and fixedly erected on the installation end, a power generation unit, and a hub seat installed on the hub seat The surrounding wall rotatably surrounds the magnet unit of the power generation unit. The surrounding wall of the aforementioned hub base defines a chamber. Features: The power generation unit is used to generate three-phase AC induction current, and includes a fixing part located in the chamber of the hub seat and fixed to the hub shaft, and a coil assembly surrounding the fixing part, the fixing part has a surrounding a base portion of the hub shaft, and at least three winding portions protruding radially from the base portion and being surrounded by the coil assembly; The bicycle power generation device also includes: a rectifier electrically connected with the power generation unit, and converting the three-phase alternating current generated by the power generation unit into a direct current not less than 1 ampere. 2. The bicycle power generating device according to claim 1, characterized in that: the bicycle power generating device further comprises a power output connector electrically connected to the rectifier and the power supply in a detachable manner. 3. The bicycle power generating device as claimed in claim 2, characterized in that: the bicycle power generating device further comprises an adapter, the adapter has a first connection end electrically connected to the power output connector, and a power supply The second connection end of the electrical connection. 4. The bicycle power generator as claimed in claim 3, wherein the wheel frame unit has a wheel frame surrounding the hub axle, and several hubs arranged radially between the wheel frame and the hub seat For the steel wire, the side ring wall of the above-mentioned hub seat has several steel wire holes at intervals for the erection of the hub steel wire. 5. The bicycle power generating device according to claim 4, wherein the rectifier has three AC input terminals electrically connected to the power generating unit. 6. The bicycle power generator according to claim 5, wherein the rectifier is arranged in the hub seat. 7. The bicycle power generator according to any one of claims 1 to 6, characterized in that: the number of winding portions of the fixing member is an integer multiple of three.

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