CN203617848U - Motor with built-in power assisted sensor - Google Patents

Abstract

The utility model provides a motor with a built-in power assisted sensor. The motor comprises a motor shaft, a cable, a stator supporting frame, a card base, a card base sleeve and a power assisted sensor. The power assisted sensor comprises a magnetic steel fixed frame, an annular gasket, two Hall elements and a plurality of magnetic steels. The stator frame is provided with an axial through hole. A radial through hole is arranged between the stator supporting frame and the motor shaft. The magnetic steel fixed frame and the annular gasket are sleeved on a motor shaft at an annular cavity. The magnetic steel fixed frame is provided with a plurality of magnetic steel fixed holes used for connecting the magnetic steels. The magnetic steel fixed frame and the annular gasket are connected to the left end part of the card base. The two Hall elements are connected to the inner wall of the radial through hole side by side and are electrically connected with the cable. The motor has the advantages that the installation of an extra power assisted sensor on a power assisted electric bicycle is not needed, thus the overall bicycle installation is greatly facilitated, in addition, the power sensor assisted is not exposed to the external environment, the damage of the sensor in use is effectively prevented, and thus the normal service life of the sensor is ensured.

Description

Built-in assistant sensor motor

Technical field

The utility model relates to a kind of motor, particularly a kind of built-in assistant sensor motor.

Background technology

Electric bicycle can be divided into two kinds of pure electrodynamic type electric bicycle and booster type electric bicycles, at present, comparatively popular is pure electrodynamic type electric bicycle at home, it has become the requisite vehicles of most families, but this pure electric bicycle also has the defect of himself: owing to adopting pure driven by power, and electric power is all generally to adopt powered battery, therefore not only power consumption is large, course continuation mileage is also shorter, in addition, battery discharges and recharges frequently and also can cause battery greatly to shorten, thereby causes customer using cost to rise.Booster type electric bicycle is comparatively rare at home at present, the mode that it realizes power-assisted is all generally that an assistant sensor is installed between vehicle frame and sprocket wheel, then measure user's information on sprocket wheel while riding by assistant sensor, as torque, rotating speed size etc., and convert this information to analog signal and give controller, then control electric machine rotation by controller by change in voltage, finally realize power-assisted effect.Because assistant sensor need to be arranged between vehicle frame and sprocket wheel, and the parts of existing assistant sensor are more, its fixed structure is comparatively complicated again, therefore make existing assistant sensor that trouble is not only installed, and then cause car load that inconvenience is installed, and the assistant sensor being arranged between vehicle frame and sprocket wheel also can cause it to be directly exposed in external environment, thereby very easily cause in assistant sensor use procedure impaired, when hitting, rain as the stone being splashed, corroded etc. by acid rain, and then will greatly affect the normal service life of assistant sensor.

Utility model content

The technical problems to be solved in the utility model is, provide one to be built-in with assistant sensor, thereby not only make booster type electric bicycle without assistant sensor is installed in addition between vehicle frame and sprocket wheel again, and then can greatly facilitate car load to install, and can also avoid assistant sensor to be exposed in external environment, thereby can effectively prevent assistant sensor in use impaired situation occur, and then guarantee the built-in assistant sensor motor of assistant sensor normal service life.

For solving the problems of the technologies described above, the utility model provides a kind of built-in assistant sensor motor of following structure: it comprises motor shaft, cable, motor wheel hub, end cap, stator support, stator, card pedestal, card base cover, ratchet, gear assembly and rotor assembly, motor shaft is provided with the cable aperture that current supply cable penetrates, gear assembly, rotor assembly, stator support and card pedestal are from left to right connected in turn on motor shaft, gear assembly is connected with rotor assembly, stator is connected on stator support, card base cover is connected with card pedestal by ratchet, motor wheel hub is connected on gear assembly, end cap is connected to card base and puts, motor wheel hub is connected with end cap, wherein, built-in assistant sensor motor also includes assistant sensor, assistant sensor comprises magnet steel fixed mount, annular gasket, two Hall elements and some magnet steel, between stator support right part and card pedestal and card base cover left end, be provided with toroidal cavity, stator support is provided with the axially extending bore communicating with toroidal cavity, between stator support and motor shaft, be provided with a radial direction through hole that is communicated with axially extending bore and cable aperture, in radial direction through hole, be provided with cable pigtail, magnet steel fixed mount and annular gasket are all enclosed within on motor shaft and are positioned at toroidal cavity, on magnet steel fixed mount, be circumferentially evenly equipped with some magnet steel fixing holes, some magnet steel are connected to some magnet steel fixing holes place, magnet steel fixed mount and annular gasket are connected to card pedestal left end place, and annular gasket is between magnet steel fixed mount and card pedestal, two Hall elements are connected on axially extending bore inwall abreast, two Hall elements are electrically connected with cable by cable pigtail.

Adopt after said structure, compared with prior art, the utlity model has following advantage: because the built-in assistant sensor motor of the utility model carries assistant sensor, and this assistant sensor is arranged on to the toroidal cavity place that is positioned at motor internal, therefore, while rotation by chain wheel drive motor in user is riding process, the assistant sensor that is positioned at motor internal can directly be measured the rotating speed of motor in real time, and convert this information to analog signal and give controller, then control electric machine rotation by controller by change in voltage, motor can be rotated with certain speed, finally realize power-assisted effect.As from the foregoing, when booster type electric bicycle has been installed after the built-in assistant sensor motor of the utility model, without assistant sensor is installed in addition between vehicle frame and sprocket wheel again, the car load that therefore greatly facilitates booster type electric bicycle is installed; In addition, because assistant sensor is arranged on motor internal, therefore assistant sensor will can not be exposed in external environment, thus effectively prevented assistant sensor in use impaired situation occur, and then effectively guaranteed the normal service life of assistant sensor.

Accompanying drawing explanation

Fig. 1 is the sectional structure profile schematic diagram of the built-in assistant sensor motor of the utility model;

Fig. 2 is that structure for amplifying profile schematic diagram is looked on a left side for magnet steel fixed mount in Fig. 1;

Fig. 3 is that structure for amplifying profile schematic diagram is looked on a left side for two Hall elements in Fig. 1.

Tool execution mode

Below in conjunction with accompanying drawing and tool execution mode, the built-in assistant sensor motor of the utility model is described in further detail.

As Fig. 1, shown in Fig. 2 and Fig. 3, in this tool execution mode, the built-in assistant sensor motor of the utility model comprises motor shaft 1, cable 2, motor wheel hub 3, end cap 4, stator support 5, stator 6, card pedestal 7, card base cover 8, ratchet 9, gear assembly, rotor assembly and assistant sensor, gear assembly comprises sun gear 10, several rows star-wheel 11, clutch inner ring 12, clutch outer ring 38 and ring gear 13, rotor assembly comprises rotor 14 and rotor magnetic steel 15, assistant sensor comprises two Hall elements 16, some magnet steel 17, a magnet steel fixed mount 18 and an annular gasket 19, motor shaft 1 is provided with the cable aperture 20 that current supply cable 2 penetrates, clutch inner ring 12, sun gear 10, rotor 14, stator support 5 and card pedestal 7 are from left to right enclosed within on motor shaft 1 successively, clutch inner ring 12 is connected by flat key with motor shaft 1, clutch outer ring 38 is connected with clutch inner ring 12 by unilateral bearing 37 covers, and clutch outer ring 38 right-hand members are provided with some circumferential equally distributed wheel shafts 21 that are, several rows star-wheel 11 is enclosed within respectively on some wheel shafts 21, and be connected with wheel shaft 21 by clutch shaft bearing 22, sun gear 10 left parts engage by gear with several rows star-wheel 11, sun gear 10 right parts and rotor 14 are connected by screw, rotor 14 is connected with motor shaft 1 by the second bearing 23, on rotor 14, be connected with rotor magnetic steel 15, stator support 5 is connected by screw (not shown) with motor shaft 1, stator 6 is connected on stator support 5 left parts, stator support 5 right part covers have packing ring 24, packing ring 24 and stator support 5 interference fit, card pedestal 7 right parts are connected with motor shaft 1 by the 3rd bearing 25, on the motor shaft 1 on the 3rd bearing 25 right sides, be connected and fixed circle 26, between card pedestal 7 and retainer plate 26, be provided with the first oil sealing 27, card pedestal 7 right part periphery walls are provided with the driving cog 28 for being connected with chain wheel, card base cover 8 is enclosed within card pedestal 7 left parts, and be connected with card pedestal 7 by ratchet 9, motor wheel hub 3 is enclosed within clutch inner ring 12, ring gear 13, outside rotor 14 and rotor magnetic steel 15, and be connected with clutch inner ring 12 left parts by the 4th bearing 29, ring gear 13 is connected by flat key with motor wheel hub 3 inner chamber left part inwalls, and engage by gear with several rows star-wheel 11, end cap 4 is enclosed within on card base cover 8, and be connected by screw with card base cover 8, motor wheel hub 3 is connected by screw with end cap 4, end cap 4 is connected with packing ring 24 by the 5th bearing 30, between end cap 4 and card pedestal 7, be provided with the second oil sealing 31, stator support 5 right parts and card pedestal 7 and card base overlap and between 8 left ends, are provided with toroidal cavity 32, stator support 5 is provided with the axially extending bore 33 communicating with toroidal cavity 32, between stator support 5 and motor shaft 1, be provided with a radial direction through hole 34 that is communicated with axially extending bore 33 and cable aperture 20, in radial direction through hole 34, be provided with cable pigtail 35, magnet steel fixed mount 18 and annular gasket 19 are all enclosed within on motor shaft 1 and are positioned at toroidal cavity 32, on magnet steel fixed mount 18, be circumferentially evenly equipped with some magnet steel fixing holes 36, some magnet steel 17 are connected to some magnet steel fixing holes 36 places by glue, magnet steel fixed mount 18 and annular gasket 19 are connected by screw at card pedestal 7 left end places, and annular gasket 19 is between magnet steel fixed mount 18 and card pedestal 7, two Hall elements 16 link together abreast by glue and are connected on axially extending bore 33 inwalls by glue, two Hall elements 16 are electrically connected with cable 2 by cable pigtail 35.

The operation principle of the built-in assistant sensor motor of the utility model is: first built-in the utility model assistant sensor motor is arranged on booster type electric bicycle, and by the controller on booster type electric bicycle, the built-in assistant sensor motor of battery and the utility model interconnects, then switch on power, make the built-in assistant sensor motor of the utility model and controller all in running order, when user's forward is stepped on when foot-operated, under the drive of chain wheel, card pedestal 7 forward rotation, and drive magnet steel fixed mount 18 forward rotation, now two Hall elements 16 will sense rotary speed and the direction of rotation of magnet steel 17, and can convert these information to analog signal and give controller, then by controller control battery, the built-in assistant sensor motor of the utility model is powered, the built-in assistant sensor motor of the utility model can be rotated with certain speed and direction, finally realize power-assisted effect, when user stops stepping on when foot-operated, card pedestal 7 does not rotate, magnet steel fixed mount 18 will stop operating, now two Hall elements 16 sense after stopping operating of magnet steel 17, can convert this information to analog signal and give controller, then stopped the built-in assistant sensor motor of the utility model to power by controller control battery, thereby cancel the power-assisted to user, when customer reverse is stepped on when foot-operated, under the drive of chain wheel, card pedestal 7 rotates backward, and drive magnet steel fixed mount 18 to rotate backward, now two Hall elements 16 will sense that magnet steel 17 is rotating backward, and can convert this information to analog signal and give controller, then stopped the built-in assistant sensor motor of the utility model to power by controller control battery, thereby cancel the power-assisted to user, this function can prevent from when card pedestal 7 from reversing causing the situation of the contingencies such as driving to occur because motor works on effectively, in the time disconnecting power supply, the built-in assistant sensor motor of the utility model and controller are all in off position, assistant sensor is not also in working order, now in the time that user rides, the built-in assistant sensor motor of the utility model can be to user's the power-assisted of carrying out, and booster type electric bicycle is equivalent to bicycle.Two Hall elements 16 to the direction of rotation of magnet steel 17 judge be sense magnet steel 17 according to two Hall elements 16 sequencing as judgment basis, the transmission principle of the built-in assistant sensor motor of this principle and the utility model is existing routine techniques, therefore do not repeat at this.

Above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection range of the utility model claims.

Claims (1)

1. a built-in assistant sensor motor, comprise motor shaft (1), cable (2), motor wheel hub (3), end cap (4), stator support (5), stator (6), card pedestal (7), card base cover (8), ratchet (9), gear assembly and rotor assembly, described motor shaft (1) is provided with the cable aperture (20) that current supply cable (2) penetrates, described gear assembly, rotor assembly, stator support (5) and card pedestal (7) are from left to right connected in turn on motor shaft (1), described gear assembly is connected with rotor assembly, described stator (6) is connected on stator support (5), described card base cover (8) is connected with card pedestal (7) by ratchet (9), described motor wheel hub (3) is connected on gear assembly, described end cap (4) is connected on card base cover (8), described motor wheel hub (3) is connected with end cap (4), it is characterized in that: described built-in assistant sensor motor also includes assistant sensor, described assistant sensor comprises magnet steel fixed mount (18), annular gasket (19), two Hall elements (16) and some magnet steel (17), between described stator support (5) right part and card pedestal (7) and card base cover (8) left end, be provided with toroidal cavity (32), described stator support (5) is provided with the axially extending bore (33) communicating with toroidal cavity (32), between described stator support (5) and motor shaft (1), be provided with a radial direction through hole (34) that is communicated with axially extending bore (33) and cable aperture (20), in described radial direction through hole (34), be provided with cable pigtail (35), described magnet steel fixed mount (18) and annular gasket (19) are all enclosed within motor shaft (1) and go up and be positioned at toroidal cavity (32), on described magnet steel fixed mount (18), be circumferentially evenly equipped with some magnet steel fixing holes (36), described some magnet steel (17) are connected to some magnet steel fixing holes (36) and locate, described magnet steel fixed mount (18) and annular gasket (19) are connected to card pedestal (7) left end place, and described annular gasket (19) is positioned between magnet steel fixed mount (18) and card pedestal (7), described two Hall elements (16) are connected on axially extending bore (33) inwall abreast, described two Hall elements (16) are electrically connected with cable (2) by cable pigtail (35).

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