CN206790300U - A kind of external rotor electric machine with encoder - Google Patents

Abstract

The utility model discloses a kind of external rotor electric machine with encoder, including preceding end bearing, rear end bearing, drive end bearing bracket, rear end cap, stator, casing, rotor, axle, spring, coiling, encoder main body, encoder fixing hole, encoder axis hole, outer shaft, fixed screw, rear outer shaft, voltage, signal wire, encoder fixed component, code-disc.A kind of external rotor electric machine with encoder of the utility model, which can be realized, is arranged on encoder on external rotor electric machine, so as to break the present situation that encoder apparatus in the prior art can be only applied to inner rotor motor.

Description

A kind of external rotor electric machine with encoder

Technical field

External rotor electric machine is the utility model is related to, more particularly, to a kind of external rotor electric machine with encoder.

Background technology

Motor is mainly made up of rotor, stator.So-called rotor, that is, the part rotated when working with dynamic load；So-called stator, Do not rotated during work.Two ends of rotor is generally assembled into the bearing chamber of stator again by front end, the loading ability of bearing of rear end two, bearing In.The front end of so-called motor, rear end refer to load the position of connection to define.One end of connection load is referred to as front end, separately Outer one end is rear end.Common motor, rotor is exactly that rotor diameter is less than diameter of stator bore internally, this to be referred to as internal rotor Motor.Also it is exactly outside rotor internal diameter is more than stator outer diameter, referred to as external rotor electric machine to have rotor.When needing to be used to control, Motor usually requires band encoder.The rotatable parts of encoder, alternatively referred to as rotor with the rotor of motor, it is necessary to be connected to one Rise, when such motor works, its rotor drives the rotor of encoder to rotate, and encoder produces signal, for controlling.Encoder is all It is " internal rotor " type, is exactly that its shell needs the stator with motor to be fixed together, and the rotor of its axle and motor is connected to Together.Encoder has an outer rotor mechanism, only inner rotor core, which dictates that it can directly pacify with inner rotor type motor Dress, but can not be mounted directly with external rotor electric machine.

It is common inner rotor motor with encoder referring to Fig. 1, is common external rotor electric machine referring to Fig. 2.Interior turn The axle of sub-motor is to rotate, and just drives the axle rotation of encoder during work naturally.But if in the same fashion by encoder When being installed to external rotor electric machine, it will go wrong, because the axle of external rotor electric machine does not rotate, but shell end cap etc. turns It is dynamic.Because encoder main body is affixed to electric motor end cap, the rotation of electric motor end cap will drive the body rotation of encoder, coding Power line in device main body, signal wire can not be connected with external controller etc., be both that encoder is interior turn with rotation Subtype.

Utility model content

The purpose of this utility model is to provide a kind of external rotor electric machine with encoder, it is intended to solves band in the prior art The motor of encoder can only be the present situation of inner-rotor type.

To achieve these goals, the technical solution of the utility model is a kind of external rotor electric machine with encoder of design, Including preceding end bearing, rear end bearing, drive end bearing bracket, rear end cap, stator, casing, rotor, axle, spring, coiling, in addition to encoder Main body, encoder fixing hole, encoder axis hole, outer shaft, fixed screw, rear outer shaft, voltage, signal wire, encoder are fixed Part, code-disc；The rear end cap is provided with the rear outer shaft；Outer shaft is hollow component after described, and the axle is from latter outer turn Axle passes；The encoder main body centre position is provided with encoder axis hole, and the rear outer shaft is penetrated in encoder axis hole, and energy Rotated in encoder axis hole；Code-disc is provided with inside the encoder main body, code-disc is fixed in the rear on outer shaft；The volume Code device body interior is provided with voltage, signal wire, the voltage, and signal wire passes from the encoder main body side wall；The encoder The encoder fixing hole and fixed screw that main body is provided with by both ends are fixed in the encoder fixed component；The encoder Fixed component is fixed on the shaft.

The advantages of the utility model and beneficial effect are：A kind of external rotor electric machine with encoder of the utility model can Realize and encoder is arranged on external rotor electric machine, internal rotor electricity is can be only applied to so as to break encoder apparatus in the prior art The present situation of machine.

Brief description of the drawings

Fig. 1 is common inner rotor motor schematic diagram with encoder.

Fig. 2 is common external rotor electric machine schematic diagram.

Fig. 3 is the utility model schematic diagram.

Fig. 4 is coder structure schematic diagram in the utility model.

Wherein, Fig. 1：Preceding end bearing 1, rear end bearing 2, drive end bearing bracket 3, rear end cap 4, stator 5, casing 6, rotor 7, axle 8, bullet Spring 9, encoder main body 11, fixed screw 15；Fig. 2：Preceding end bearing 1, rear end bearing 2, drive end bearing bracket 3, rear end cap 4, stator 5, machine Shell 6, rotor 7, axle 8, spring 9, outer shaft 14；Fig. 3：Preceding end bearing 1, rear end bearing 2, drive end bearing bracket 3, rear end cap 4, stator 5, machine Shell 6, rotor 7, axle 8, spring 9, coiling 10, encoder main body 11, outer shaft 14, fixed screw 15, rear outer shaft 16, voltage, Signal wire 17, encoder fixed component 18, code-disc 19；Fig. 4：Encoder main body 11, encoder fixing hole 12, encoder axis hole 13rd, voltage, signal wire 17.

Embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below Example is only used for clearly illustrating the technical solution of the utility model, and can not limit protection model of the present utility model with this Enclose.

Embodiment：

A kind of external rotor electric machine with encoder, including preceding end bearing 1, rear end bearing 2, drive end bearing bracket 3, rear end cap 4, stator 5th, casing 6, rotor 7, axle 8, spring 9, coiling 10, in addition to encoder main body 11, encoder fixing hole 12, encoder axis hole 13rd, outer shaft 14, fixed screw 15, rear outer shaft 16, voltage, signal wire 17, encoder fixed component 18, code-disc 19；It is described Rear end cap 4 is provided with the rear outer shaft 16；Outer shaft 16 is hollow component after described, and the axle 8 passes from rear outer shaft 16； The centre position of encoder main body 11 is provided with encoder axis hole 13, and the rear outer shaft 16 is penetrated in encoder axis hole 13, and It can be rotated in encoder axis hole 13；The inside of encoder main body 11 is provided with code-disc 19, and code-disc 19 fixes outer in the rear turn On axle 16；The inside of the encoder main body 11 is provided with voltage, signal wire 17, the voltage, and signal wire 17 is from the encoder main body 11 side walls pass；The encoder fixing hole 12 and fixed screw 15 that the encoder main body 11 is provided with by both ends are fixed on described In encoder fixed component 18；The encoder fixed component 18 is fixed on the axle 8.

The external rotor electric machine is in use, inner shaft 8 and stator 5 are motionless, and exterior case 6 and rotor 7 rotate, due to rear end cap 4th, rear outer shaft 16 is all fixed on casing 6, so after being powered, with the rotation of rotor 7 and casing 6, code-disc 19 rotates, by This produces signal, and from voltage, signal wire 17 transfers out；Simultaneously encoder main body 11 is fixed on encoder fixed component 18 On, and encoder fixed component 18 is fixed on axle 8, so encoder main body 11 itself does not rotate.It is achieved thereby that According to encoder apparatus on external rotor electric machine.

Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model technical principle is not departed from, some improvements and modifications can also be made, these change Enter and retouch and also should be regarded as the scope of protection of the utility model.

Claims (1)

1. a kind of external rotor electric machine with encoder, including preceding end bearing, rear end bearing, drive end bearing bracket, rear end cap, stator, casing, Rotor, axle, spring, coiling, it is characterised in that：Also include encoder main body, encoder fixing hole, encoder axis hole, outer shaft, Fixed screw, rear outer shaft, voltage, signal wire, encoder fixed component, code-disc；The rear end cap is provided with described latter outer turn Axle；Outer shaft is hollow component after described, and the axle passes from rear outer shaft；The encoder main body centre position is provided with coding Device axis hole, the rear outer shaft is penetrated in encoder axis hole, and can be rotated in encoder axis hole；Set inside the encoder main body There is code-disc, code-disc is fixed in the rear on outer shaft；Voltage, signal wire, the voltage, signal are provided with inside the encoder main body Line passes from the encoder main body side wall；The encoder fixing hole and fixed screw that the encoder main body is provided with by both ends It is fixed in the encoder fixed component；The encoder fixed component is fixed on the shaft.