Electric bicycle hub motor inclined type outgoing line device
Technical field
The utility model relates to the motor of electric bicycle, particularly relates to electric bicycle hub motor inclined type outgoing line device.
Background technology
Electric bicycle hub motor in the market generally adopts at motor shaft intermediate arrangement wire hole, motor harness is passed from the wire hole of motor shaft center, there is following shortcoming: the one, it is enough big that wire hole should be opened, motor harness could therefrom be passed, and wire hole is understood the intensity that reduces motor shaft after holding greatly; The 2nd, in the motor shaft course of processing, the axiality of wire hole and motor shaft is difficult to guarantee, causes the motor shaft wall unevenness even easily, concentrates thereby occur stress easily under loading condition, finally may cause shaft break of motor, threaten for bicyclist's personal safety; The 3rd, motor harness is passed from the motor shaft wire hole, damages the crust of motor harness easily, causes extraneous liquid to enter motor internal from breakage, and the lighter reduces motor useful life, and weight person is instantaneous to burn out motor.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming that prior art exists, a kind of intensity that strengthens motor shaft to be provided, can satisfying the instructions for use of electric bicycle; And be easy to guarantee the machining accuracy of motor shaft, guarantee driving safety, the electric bicycle hub motor inclined type outgoing line device that water resistance is good.
The technical scheme of the utility model electric bicycle hub motor inclined type outgoing line device is: comprise the motor that is installed on the wheel hub of electric bicycle, the output of motor shaft is through the bearing fixing electric motor end cap, motor harness from the inboard of electric motor end cap through the outside of electric motor end cap, it is characterized in that: the output of motor shaft is shaped on oblique fairlead, motor harness through oblique fairlead from the inboard of electric motor end cap the outside through electric motor end cap.
Electric bicycle hub motor inclined type outgoing line device of the present utility model, from the original centre bore that wire hole is distributed in motor shaft, change the oblique fairlead that is distributed to motor shaft into, the incline direction of oblique fairlead can be from top to bottom, also can be from the bottom to top, oblique fairlead not only is convenient to processing, and machining accuracy also easily guarantees, can avoid occurring concentrating because of the even motor shaft stress that causes of place, position, hole wall unevenness; In addition, motor harness is arranged in the oblique fairlead, operating procedure is quite simple.
Electric bicycle hub motor inclined type outgoing line device of the present utility model has marine glue between two of its described oblique fairlead and the motor harness, can play good waterproof effect, and cost is low, and technology is simple, and the motor related components is not had influence.Between its described electric motor end cap and the motor shaft oil sealing is installed, is adopted oil sealing to carry out waterproof, simple in structure, good stability.Cooperation between its described electric motor end cap, oil sealing and the motor shaft three is an interference fit, and good seal performance has really played the effect that enters motor internal that stops outside liquid, does not also influence motor properties simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model electric bicycle hub motor inclined type outgoing line device.
Embodiment
The utility model discloses a kind of electric bicycle hub motor inclined type outgoing line device, as shown in Figure 1, comprise the motor 1 that is installed on the wheel hub of electric bicycle, the output of motor shaft 11 is through bearing 2 fixed electrical machinery end caps 3, motor harness 4 from the inboard of electric motor end cap 3 through the outside of electric motor end cap 3, it is characterized in that: the output of motor shaft 11 is shaped on oblique fairlead 12, motor harness 4 through oblique fairlead 12 from the inboard of electric motor end cap 3 outside through electric motor end cap 3.From the original centre bore that wire hole is distributed in motor shaft, change the oblique fairlead that is distributed to motor shaft into, the incline direction of oblique fairlead can be from top to bottom, also can be from the bottom to top, oblique fairlead not only is convenient to processing, machining accuracy also easily guarantees, can avoid occurring concentrating because of the even motor shaft stress that causes of place, position, hole wall unevenness; In addition, motor harness is arranged in the oblique fairlead, operating procedure is quite simple.Between two of its described oblique fairlead 12 and the motor harness 4 marine glue 6 is arranged, can play good waterproof effect, and cost is low, and technology is simple, and the motor related components is not had influence, when practical operation, motor harness 4 passed and adjust correct position from the oblique fairlead 12 of motor shaft after, coat marine glue between the two of oblique fairlead and motor harness, the viscosity of marine glue is moderate, consumption also should be moderate, enters from here to guarantee extraneous liquid that can not.Oil sealing 5 is installed between its described electric motor end cap 3 and the motor shaft 11, is adopted oil sealing to carry out waterproof, simple in structure, good stability, the inner lip contact-making surface of motor shaft 11 and oil sealing 5 should be smooth as much as possible, recommendation form surface roughness≤0.6; Surface abrasion resistance is good, advises surperficial high-frequency quenching HRC45~50.When assembling, can between motor shaft 11 and oil sealing 5 inner lip contact-making surfaces, add an amount of lubricating grease, guaranteeing has uniform oil film, not only can not influence the runnability of motor, can also reach good waterproof effect.Cooperation between its described electric motor end cap 3, oil sealing 5 and motor shaft 11 threes is an interference fit, and good seal performance has really played the effect that enters motor internal that stops outside liquid, does not also influence motor properties simultaneously.