阅读说明：本技术 电动自行车的防盗系统 (Anti-theft system of electric bicycle ) 是由 邓世刚 缪鹏程 于 2020-12-25 设计创作，主要内容包括：本申请公开了一种电动自行车的防盗系统,其中,电动自行车包括：脚踏板,用于供用户蹬踏；车轮,用于实现行走功能；中轴,用于安装脚踏板和车轮；轴套,用于将中轴转动安装至车架；滑动锁块,与中轴构成止转连接且能相对中轴滑动；安装壳体,能在滑动锁块滑动至预设位置时锁定滑动锁块的转动；防盗系统包括：磁性线圈,用于产生改变滑动锁块滑动位置的磁场；电源装置,用于为磁性线圈供电以使其产生磁场；其中,磁性线圈与电源装置构成电性连接以使磁性线圈产生吸引滑动锁块脱离预设位置的磁场。本申请的有益之处在于提供一种兼具转速检测和电控自锁的电动自行车的防盗系统。(The application discloses electric bicycle's anti-theft system, wherein, electric bicycle includes: a pedal for a user to pedal; the wheels are used for realizing a walking function; the middle shaft is used for mounting the pedal and the wheel; the shaft sleeve is used for rotatably mounting the middle shaft to the frame; the sliding locking block is in rotation-stopping connection with the middle shaft and can slide relative to the middle shaft; the mounting shell can lock the rotation of the sliding locking block when the sliding locking block slides to a preset position; the anti-theft system includes: the magnetic coil is used for generating a magnetic field for changing the sliding position of the sliding locking block; the power supply device is used for supplying power to the magnetic coil so as to enable the magnetic coil to generate a magnetic field; the magnetic coil is electrically connected with the power supply device so that the magnetic coil generates a magnetic field for attracting the sliding locking block to separate from the preset position. The anti-theft system has the beneficial effects that the anti-theft system of the electric bicycle with the functions of rotating speed detection and electric control self-locking is provided.)

1. An antitheft system for an electric bicycle, the electric bicycle comprising:

a pedal for a user to pedal;

the wheels are used for realizing a walking function;

the middle shaft is used for mounting the pedal and the wheel;

the shaft sleeve is used for rotatably mounting the middle shaft to the frame;

the sliding locking block is in rotation-stopping connection with the middle shaft and can slide relative to the middle shaft;

the mounting shell can lock the rotation of the sliding locking block when the sliding locking block slides to a preset position;

the anti-theft system includes:

the magnetic coil is used for generating a magnetic field for changing the sliding position of the sliding lock block;

the power supply device is used for supplying power to the magnetic coil so as to enable the magnetic coil to generate a magnetic field;

the magnetic coil and the power supply device are electrically connected so that the magnetic coil generates a magnetic field for attracting the sliding locking block to be separated from the preset position.

2. The antitheft system for electric bicycles of claim 1, characterized in that:

the anti-theft system further comprises:

the speed measuring magnetic ring can synchronously rotate along with the middle shaft;

and the Hall element is used for sensing the rotation of the speed measuring magnetic ring so as to generate an electric signal.

3. The antitheft system for electric bicycles of claim 2, characterized in that:

the anti-theft system further comprises:

a controller for receiving an electrical signal from the hall element;

the Hall element and the controller form electric connection so that signals of the Hall element can be transmitted to the controller.

4. The antitheft system for electric bicycles of claim 3, characterized in that:

the magnetic coil and the controller are electrically connected so that the controller can control the magnetic coil to be powered on and powered off, and the magnetic coil eliminates a magnetic field attracting the sliding lock block when the power is off.

5. The antitheft system for electric bicycles of claim 4, wherein:

the magnetic coil and the controller are electrically connected so that the controller can control the current direction of the magnetic coil, and when the current in the magnetic coil flows in the positive direction, the magnetic coil generates a magnetic field for attracting the sliding locking block.

6. The antitheft system for electric bicycles of claim 5, wherein:

when the current in the magnetic coil flows in the reverse direction, the magnetic coil generates a magnetic field which repels the sliding lock block.

7. The anti-theft system for electric bicycles of claim 6, wherein:

the anti-theft system further comprises:

a drive coil for generating a magnetic field for driving the central axis;

the drive coil is electrically connected with the power supply device so as to electrify the drive coil to generate a magnetic field.

8. The antitheft system for electric bicycles of claim 7, wherein:

the driving coil and the controller are electrically connected so that the controller controls the on-off and direction of the current of the driving coil.

9. The antitheft system for electric bicycles of claim 8, wherein:

the anti-theft system further comprises:

a super capacitor for storing electrical energy for use by the drive coil;

the super capacitor is electrically connected with the driving coil at least.

10. The antitheft system for electric bicycles of claim 9, wherein:

the super capacitor and the magnetic coil are electrically connected so that the magnetic coil charges the super capacitor when electrified.

Technical Field

The application relates to an anti-theft system, in particular to an anti-theft system of an electric bicycle.

Background

An electric bicycle is a mechatronic personal transportation tool which takes a storage battery as auxiliary energy and is provided with a motor, a controller, the storage battery, a rotating handle brake handle and other operating components and a display instrument system on the basis of a common bicycle.

The existing electric bicycle has the defect of easy theft, and an anti-theft device positioned outside is easy to damage when the bicycle is locked.

Disclosure of Invention

In order to solve the disadvantages of the prior art, the present application provides an anti-theft system for an electric bicycle, wherein the electric bicycle comprises: a pedal for a user to pedal; the wheels are used for realizing a walking function; the middle shaft is used for mounting the pedal and the wheel; the shaft sleeve is used for rotatably mounting the middle shaft to the frame; the sliding locking block is in rotation-stopping connection with the middle shaft and can slide relative to the middle shaft; the mounting shell can lock the rotation of the sliding locking block when the sliding locking block slides to a preset position; the anti-theft system includes: the magnetic coil is used for generating a magnetic field for changing the sliding position of the sliding locking block; the power supply device is used for supplying power to the magnetic coil so as to enable the magnetic coil to generate a magnetic field; the magnetic coil is electrically connected with the power supply device so that the magnetic coil generates a magnetic field for attracting the sliding locking block to separate from the preset position.

Further, the anti-theft system further includes: the speed measuring magnetic ring can synchronously rotate along with the middle shaft; and the Hall element is used for inducing the rotation of the speed measuring magnetic ring to generate an electric signal.

Further, the anti-theft system further includes: a controller for receiving an electrical signal from the hall element; the Hall element and the controller are electrically connected so that the signal of the Hall element can be transmitted to the controller.

Furthermore, the magnetic coil and the controller are electrically connected so that the controller can control the magnetic coil to be powered on and powered off, and the magnetic coil eliminates a magnetic field attracting the sliding lock block when the power is off.

Further, the magnetic coil is electrically connected with the controller so that the controller can control the current direction of the power-on of the magnetic coil, and when the current in the magnetic coil flows in the positive direction, the magnetic coil generates a magnetic field for attracting the sliding locking block.

Further, when the current in the magnetic coil flows in the reverse direction, the magnetic coil generates a magnetic field that repels the slide lock piece.

Further, the anti-theft system further includes: the driving coil is used for generating a magnetic field for driving the middle shaft; the drive coil is electrically connected with the power supply device so as to electrify the drive coil to generate a magnetic field.

Further, the driving coil is electrically connected with the controller, so that the controller controls the current on-off and direction of the driving coil.

Further, the anti-theft system further includes: a super capacitor for storing electrical energy for use by the drive coil; the super capacitor is electrically connected with the driving coil at least.

Furthermore, the super capacitor is electrically connected with the magnetic coil, so that the magnetic coil charges the super capacitor when being electrified.

The application has the advantages that: the anti-theft system of the electric bicycle has the functions of rotating speed detection and electric control self-locking.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

fig. 1 is a schematic diagram of a hardware structure of an antitheft system of an electric bicycle according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the embodiment of FIG. 1;

FIG. 3 is a partial cross-sectional structural view of the embodiment of FIG. 1;

FIG. 4 is a schematic diagram of an exploded structure of the embodiment of FIG. 1;

FIG. 5 is a perspective view of the bottom bracket in the embodiment of FIG. 1;

FIG. 6 is a schematic view of the bottom bracket assembly of the embodiment of FIG. 1 with a retaining ring, spring, and slide lock attached;

FIG. 7 is a schematic structural view of the middle shaft shown in FIG. 1 with a circuit board and a speed measuring magnet ring mounted thereon;

FIG. 8 is a schematic view of a side of the slide lock in the embodiment of FIG. 1;

FIG. 9 is a schematic view of the other side of the slide lock block in the embodiment of FIG. 1;

FIG. 10 is a schematic view of a partial structure of the sleeve in the embodiment of FIG. 1;

FIG. 11 is a partial schematic structural view of a portion of the mounting housing of the embodiment of FIG. 1;

FIG. 12 is a schematic view of the structure of FIG. 11 from the other side;

FIG. 13 is a partial schematic structural view of another portion of the mounting housing of the embodiment of FIG. 1;

FIG. 14 is a schematic diagram of the coil support structure of the embodiment of FIG. 1;

fig. 15 is a block schematic diagram of an antitheft system of an electric bicycle according to an embodiment of the present application.

The meaning of the reference symbols in the figures:

an anti-theft device 100 for an electric bicycle,

the shaft sleeve 101, the shaft hole 1011, the positioning groove 1012,

the middle shaft 102, the positioning groove 1021, the guide groove 1022,

the magnetic coils (103) are arranged in a magnetic pattern,

slide lock 104, guide block 1041, locking projection 1042,

the installation case 105, the upper cover 1051, the lower case 1052, the locking groove 1053, the positioning protrusion 1054,

the elastic member 106 is provided at a position where,

a speed measuring magnetic ring 107 is arranged on the upper portion of the magnetic ring,

the hall element 108 is provided with a hall element,

the circuit board 109 is provided with a plurality of circuit boards,

the coil carrier 110, the winding slots 1101,

the positioning ring 111 is provided with a positioning hole,

a C-shaped ring 113;

a cylinder liner 114;

a bearing 115;

the bolts 116 are installed.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 14, an electric bicycle antitheft device of the present application includes: shaft sleeve 101, central shaft 102, magnetic coil 103, sliding lock block 104, mounting shell 105 and elastic element 106.

Wherein, the shaft sleeve 101 is provided with a hollow shaft hole 1011; the central shaft 102 passes through the shaft hole 1011 and is rotationally connected with the shaft sleeve 101; the magnetic coil 103 surrounds the central shaft 102 and is fixedly connected with the shaft sleeve; the sliding locking block 104 is at least partially arranged on the periphery of the middle shaft and is in sliding connection and rotation stopping connection with the middle shaft 102; the mounting shell 105 and the shaft sleeve 101 form a fixed connection and are provided with locking grooves 1053 which can be inserted by the sliding locking blocks 104 in a sliding way; the elastic member 106 is used to apply a force to the slide lock piece to slide it to a position where it can be fitted into the locking groove.

Through the above scheme, when the magnetic coil 103 is energized to generate the first magnetic field, the sliding lock block 104 is attracted and retreated from the lock groove 1053 of the mounting housing 105, so that the sliding lock block 104 can rotate, and since the middle shaft 102 and the sliding lock block 104 form a rotation-stopping connection, the rotation of the middle shaft is unlocked. When the magnetic coil 103 is powered off, the elastic element 106 drives the sliding magnetic block to translate along the axial direction of the central shaft and be embedded into the locking groove 1063 of the mounting shell, so that the rotation of the sliding locking block 104 is locked, the rotation of the central shaft 102 is locked, and the anti-theft function is realized.

As a specific solution, the electric bicycle antitheft device of the present application further comprises: a bearing 115; middle axle 102 constitutes to rotate with the axle sleeve through bearing 115 and is connected, in addition, in order to make the device of this application can install to electric bicycle, the technical scheme of this application still includes: the cylinder sleeve 114 and the shaft sleeve 101 are also provided with cylinder holes for the middle shaft 102 to pass through, and the wall of the cylinder sleeve 114 is of a hollow structure. The shaft sleeve 101 is installed at two ends of the cylinder sleeve 114, and the middle shaft 102 can drive the cylinder sleeve to rotate relative to the shaft sleeve. The outside of axle sleeve 101 is equipped with the external screw thread for install the anti-theft device of this application to electric bicycle's frame department.

As a specific scheme, threaded holes are formed in two ends of the middle shaft 102 and are used for installing and fixing mounting bolts 116 of the pedal crank. Meanwhile, the middle shaft 102 is provided with different cross sections in the axial direction to adapt to the pedal crank and transmit torque.

In one embodiment, the bottom bracket 102 has a positioning groove 1021, a positioning ring 111 is embedded in the positioning groove 1021, and the elastic member 106 can be positioned by abutting against the positioning ring 111. More specifically, the elastic member is a coil spring which abuts against the positioning ring and the slide lock piece, respectively.

Specifically, the middle shaft 102 is provided with a guide groove 1022, the guide groove 1022 substantially extends in the axial direction of the middle shaft, the slide lock block is configured as a ring-shaped structure, the inner side of the ring-shaped structure protrudes to form a guide block 1041, and the guide block 1041 is embedded into the guide groove 1022 to achieve a guiding effect. As the preferred scheme, the middle shaft is provided with two guide grooves which are symmetrically arranged.

Specifically, the present invention further provides a coil support 110 having a winding slot 1101 formed therein, and the magnetic coil 103 is wound in the winding slot 1101.

Specifically, the mounting housing 105 may include an upper cover 1051 and a lower cover 1052, wherein the lower cover 1052 forms a space for accommodating a magnetic coil, a sliding lock block, an elastic member, a velocity measuring magnetic ring, a hall element, a circuit board, and the like. A support post for positioning and supporting the circuit board is provided inside the lower case 1052. And, the inferior valve is inside to be equipped with the mounting groove, and upper cover 1051 can imbed in the inferior valve to be formed with the installation piece, the installation piece can imbed in the mounting groove, can realize the combination of upper cover and inferior valve.

As a further preferred option, the slide locking piece 104 is formed with a locking protrusion 1042, which locking protrusion 1042 is adapted to engage in the locking groove 1053.

As a further preferred option, the end of the sleeve 101 is provided with a plurality of positioning grooves 1012, and the side of the lower shell 1052 corresponding to the sleeve is provided with a plurality of positioning protrusions 1054 which cooperate to fix the position of the housing so that it cannot rotate relative to the sleeve. Meanwhile, the technical scheme of the application is also provided with a C-shaped ring 113, the C-shaped ring 113 can be clamped to the middle shaft 102 so as to lock the axial position of the mounting shell 105, and the position of the mounting shell relative to the shaft sleeve is fixed due to the locking of the C-shaped ring 113 and the shaft sleeve 101 and the matching of the positioning protrusions 1054 and the positioning grooves 1012. The inner side of the C-shaped ring is also provided with a projection which is embedded into the guide groove to realize the positioning of the C-shaped ring.

As another aspect of the present application, the electric bicycle antitheft device of the present application further includes: a speed measuring magnetic ring 107, a Hall element 108 and a circuit board 109.

Specifically, the speed measuring magnetic ring 107 is connected with the middle shaft 102 in a rotation-stopping manner, and the hall element 108 is fixedly installed inside the installation shell so as to be detected by the hall element when the speed measuring magnetic ring and the middle shaft rotate synchronously. The circuit board 109 is fixed inside the mounting case; the circuit board 109 is disposed between the slide lock block 104 and the velocity measuring magnet ring 107. A magnetic coil 103 is mounted to the circuit board on the side adjacent the slide lock block. The Hall element is at least arranged on one side of the circuit board close to the speed measuring magnetic ring. The circuit board is of an annular structure, and the central shaft and the elastic piece penetrate through the circuit board.

The rotating speed data of the spindle can be obtained through the Hall element. Thereby realizing speed detection and control based on the speed detection.

Referring to fig. 15, the antitheft system of the present application includes: the magnetic coil is used for generating a magnetic field for changing the sliding position of the sliding locking block; the power supply device is used for supplying power to the magnetic coil so as to enable the magnetic coil to generate a magnetic field; the magnetic coil is electrically connected with the power supply device so that the magnetic coil generates a magnetic field for attracting the sliding locking block to separate from the preset position.

As a basic scheme, when the electric bicycle is in a normal use state, the magnetic coil is electrified to generate a magnetic field for attracting the sliding locking block, so that the middle shaft is unlocked; when the anti-theft lock is not used, for example, when a user turns off a power supply, the magnetic coil is powered off, and when the power supply is lost, the sliding lock block slides to the locking position under the action of the elastic piece, so that the middle shaft cannot rotate, and the anti-theft function is realized.

Specifically, the antitheft system further includes: the speed measuring magnetic ring can synchronously rotate along with the middle shaft; and the Hall element is used for inducing the rotation of the speed measuring magnetic ring to generate an electric signal.

Specifically, the antitheft system further includes: a controller for receiving an electrical signal from the hall element; the Hall element and the controller are electrically connected so that the signal of the Hall element can be transmitted to the controller.

By the scheme, the controller can acquire the rotating speed data of the middle shaft, and as an alternative, the controller can judge whether the middle shaft is effectively locked or not according to the acquired rotating speed data. Meanwhile, when the electric bicycle is normally used, the controller can acquire rotating speed data to provide rotating speed data reference for other controls of the electric bicycle.

As a specific scheme, the magnetic coil is electrically connected with the controller so that the controller can control the magnetic coil to be powered on and powered off, and the magnetic coil eliminates a magnetic field attracting the sliding lock block when the power is off.

As an extension, the magnetic coil is electrically connected to the controller so that the controller can control the direction of the current applied to the magnetic coil, and when the current in the magnetic coil flows in the forward direction, the magnetic coil generates a magnetic field that attracts the sliding lock. When the current in the magnetic coil flows in the reverse direction, the magnetic coil generates a magnetic field that repels the slide lock block. In this way, on the one hand, the solution can be simplified, for example, the provision of an elastic element can be dispensed with, and on the other hand, even in the case of the provision of an elastic element, the use of a magnetic coil ensures that the slide lock can be moved into the locking position more rapidly.

As previously described, the slide lock block can only be inserted into the locking groove when rotated to a particular circumferential position. If the locking groove is not aligned when the power is cut off, the risk of locking can be brought, and although the sliding lock block can be movably embedded when the middle shaft is rotated, the locking is also possibly disabled. As an extension, the anti-theft system further comprises: the driving coil is used for generating a magnetic field for driving the middle shaft; the drive coil is electrically connected with the power supply device so as to electrify the drive coil to generate a magnetic field. The drive coil acts to rotate the sliding lock block out of alignment with the locking slot to the desired circumferential position when the controller requires locking. As a preferred scheme, the driving coil may be a coil generating a constant magnetic field, that is, when the driving coil is powered on, the magnetic field generated by the driving coil is constant, the driving coil has magnetism by acting on the magnetic field of the speed measuring magnetic ring, the sliding lock block or the middle shaft itself, and the speed measuring magnetic ring has magnetism in the speed measuring magnetic ring, the sliding lock block or the middle shaft, and the sliding lock block or the middle shaft can obtain magnetism by adding a corresponding magnetic structure. Alternatively, the drive coil may be configured as a winding-type coil, such as a motor, to generate a dynamic magnetic field that drives the central shaft or other structure rotationally coupled thereto.

As a further preferred solution, the controller can obtain the corresponding position through a hall element, thereby controlling the driving coil to generate the dynamic magnetic field. Specifically, the driving coil is electrically connected with the controller so that the controller controls the on-off and the direction of the current of the driving coil.

In addition, the anti-theft system further includes: a super capacitor for storing electrical energy for use by the drive coil; the super capacitor is electrically connected with the driving coil at least. The super capacitor and the magnetic coil are electrically connected so that the magnetic coil charges the super capacitor when being electrified.

Therefore, when the power supply device is powered off integrally, namely when the power supply device does not obtain power, the power required by the driving coil can still be obtained from the super capacitor. And when the speed measuring magnetic ring rotates, the magnetic coil or the driving coil can generate electromotive force, and the super capacitor can store the electric energy.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.