CN201717768U

CN201717768U - Built-in motor

Info

Publication number: CN201717768U
Application number: CN2010202463109U
Authority: CN
Inventors: 李秀娣; 李永
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-01
Filing date: 2010-07-01
Publication date: 2011-01-19
Anticipated expiration: 2020-07-01

Abstract

The utility model discloses a built-in motor, which comprises a case, wherein, an iron core is arranged inside the case; the outer lateral wall of the iron core is winded by a coil; a rotor is arranged inside the iron core in a penetrating manner; a signal magnet ring and a Hall element are also arranged inside the case; the signal magnet ring is arranged on the side edge of the iron core; and the Hall element is arranged on the outer lateral wall of the signal magnet ring or arranged in the space that extends along the signal magnet ring in the radial direction. In the built-in motor, the Hall element is separated from the iron core, so that the Hall element cannot be in contact with the iron core with high temperature, the Hall element can be prevented from working at high temperature for a long time, and the service life of the Hall element is prolonged greatly.

Description

A kind of mid-motor

Technical field

The utility model relates to a kind of mid-motor.

Background technology

Mid-motor refers to be placed on the brshless DC motor in battery-operated motor cycle or electro-tricycle centre position, popular on the market battery-operated motor cycle is wheel hub motor mostly now, wheel hub motor is an external rotor, rotor and casing combine, work as rotor rotation, just drive motor housing and rotate, the electric motorcycle wheel also just rotates.But when battery-operated motor cycle did not have electricity, this was a motor or along with wheel, produces very big magnetic resistance.If use the middle motor, magnetic resistance reduces relatively, battery-operated motor cycle is lighter when carrying out.In addition, mid-motor can be made high-speed electric expreess locomotive, can do to such an extent that volume is little like this, light weight, high-speed electric expreess locomotive can utilize gear reduction or chain wheel speed ratio to slow down, and reach the needed rotating speed of battery-operated motor cycle, after the deceleration, the rotating speed of motor output reduces, and the output torque must increase, and is suitable for climbing.In a word, mid-motor is a spotlight of battery-operated motor cycle.Mid-in sum motor has that volume is little, weight is low, noise is low, the life-span is long, power is big, climbing capacity is strong, efficient is high, more power saving, operate steadily, characteristics such as overload capacity is strong, be able to extensive use.

Current mid-motor as shown in Figure 1, comprises casing 17, be provided with iron core 3 in the described casing 17, the lateral wall of described iron core 3 is surrounded with coil 5, one rotors 1 and is located in iron core 3 inside, described iron core 3 is provided with Hall element 19, and rotor is provided with magnet steel corresponding to Hall element 19.The mid-motor of this structure is arranged on Hall element 19 on the iron core 3, there is following defective: 1) meeting heating because coil 5 works long hours, thereby make iron core 3 heatings with coil 5 contacts, the Hall element 19 that must cause like this being arranged on the iron core 3 is at high temperature worked for a long time, thereby shorten the useful life of Hall element 19,2) can produce magnetic field during coil 5 work, easily Hall element 19 is produced interference effects, cause rotor 1 rotation unstable, easily shake.

The utility model content

The utility model is at deficiency of the prior art, and a kind of mid-motor of simple in structure, long service life is provided, and this motor is not subject to coil magnetic field and disturbs, and makes the rotor rotation steadily, the difficult shake.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:

A kind of mid-motor, comprise casing, be provided with iron core in the described casing, the lateral wall of described iron core is surrounded with coil, one rotor is located in core interior, also be provided with signal magnet ring, Hall element in the described casing, described signal magnet ring is arranged on the side of iron core, and described Hall element is arranged on the lateral wall place of signal magnet ring or in the space that the signal magnet ring radially extends.

In the technique scheme, described Hall element is installed on the wiring board, and described wiring board is installed on the end cap of casing by the hall position adjustable plate.

In the technique scheme, offer through hole on the described end cap, bolt is located in the through hole, and the end of bolt is twisted and to be located on the hall position adjustable plate, described through hole is at the external diameter of the internal diameter that makes progress in week greater than bolt, and through hole is suitable at the external diameter of radially internal diameter and bolt.

In the technique scheme, comprise on the lateral wall of rotor being set in the magnet ring fixed mount that described signal magnet ring is arranged on the magnet ring fixed mount lateral wall.

In the technique scheme, described Hall element by the setting of Hall fixed mount in the circuit board.

Beneficial effect: the utility model compared with prior art has following beneficial effect:

1) the utility model is owing to separate Hall element with iron core, and Hall element just can not contact with the iron core of high temperature like this, avoids Hall element at high temperature to work for a long time, has improved the useful life of Hall element greatly.

2) the utility model has avoided Hall element disturbed by coil magnetic field because Hall element is separated with iron core, makes the rotor rotation steadily, the difficult shake.

Description of drawings

Fig. 1 is the front view of mid-motor in the prior art.

Fig. 2 is the front view of mid-motor.

Fig. 3 is the left view of mid-motor shown in Figure 2.

Fig. 4 is rotor, iron core, the structural representation that signal magnet ring, Hall mounting bracket etc. cooperate.

Embodiment

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

See Fig. 2～Fig. 4, a kind of mid-motor, comprise casing 17, be provided with iron core 3 in the described casing 17, the lateral wall of described iron core 3 is surrounded with coil 5, one rotor 1 is located in iron core 3 inside, and the perisporium of described rotor 1 is provided with magnet ring fixed mount 7, and described magnet ring fixed mount 7 is provided with signal magnet ring 9.

The side of described magnet ring fixed mount 7 is provided with wiring board 13, and described wiring board 13 is provided with Hall fixed mount 11, and this Hall fixed mount 11 is provided with Hall element 19, and these Hall element 19 correspondences are arranged on the sidewall of signal magnet ring 9.

The end of described casing 17 is provided with end cap 21, offer through hole 210 on the end cap 21, one bolt 23 is located in the through hole 210, and the end of bolt 23 is twisted and is provided with hall position adjustable plate 15, described through hole 210 is at the external diameter of the internal diameter that makes progress in week greater than bolt 23, and through hole 210 is suitable at the external diameter of radially internal diameter and bolt 23.Described wiring board 13 is installed on the hall position adjustable plate 15.The Hall element 19 of this structure on being arranged on wiring board 13 not and signal magnet ring 9 when suitable can suitably not rotate hall position adjustable plate 15, makes Hall element 19 and signal magnet ring 9 suitable.

During work,, improved the useful life of Hall element 19 greatly because Hall element 19 avoids Hall element 19 at high temperature to work for a long time away from the iron core 3 of heating.Hall element 19 of the present utility model in addition is far away with coil 5 positions, has avoided Hall element 19 to be subjected to coil 5 magnetic interference, makes rotor 1 rotation steadily, the difficult shake.

Claims

1. mid-motor, comprise casing (17), be provided with iron core (3) in the described casing (17), the lateral wall of described iron core (3) is surrounded with coil (5), one rotor (1) is located in iron core (3) inside, also be provided with signal magnet ring (9), Hall element (19) in the described casing (17), it is characterized in that, described signal magnet ring (9) is arranged on the side of iron core (3), and described Hall element (19) is arranged on the lateral wall place of signal magnet ring (9) or in the space that signal magnet ring (9) radially extends.

2. mid-motor as claimed in claim 1 is characterized in that, described Hall element (19) is installed on the wiring board (13), and described wiring board (13) is installed on the end cap (21) of casing (17) by hall position adjustable plate (15).

3. mid-motor as claimed in claim 2, it is characterized in that, offer through hole (210) on the described end cap (21), bolt (23) is located in the through hole (210), and the end of bolt (23) is twisted and is located on the hall position adjustable plate (15), described through hole (210) is at the external diameter of the internal diameter that makes progress in week greater than bolt (23), and through hole (210) is suitable at the external diameter of radially internal diameter and bolt (23).

4. mid-motor as claimed in claim 1 or 2 is characterized in that, comprises on the lateral wall of rotor (1) being set in magnet ring fixed mount (7), and described signal magnet ring (9) is arranged on magnet ring fixed mount (7) lateral wall.

5. mid-motor as claimed in claim 1 or 2 is characterized in that, described Hall element (19) is arranged on the wiring board (13) by Hall fixed mount (11).