CN205178702U - Built -in end cover motor - Google Patents

Abstract

The utility model discloses, to current motor drive system miniaturized with the design integrates, provide the motor of a built -in end cover, including end cover, casing, motor shaft, bearing, the bearing set up in the end cover center, the motor shaft passes through the bearing passes the motor end cover, the end cover with the casing passes through tang interference fit, motor shell is connected with the load casing and is fixed, in end cover edge, the inside one side of motor is provided with first tang, be used for with the motor shell cooperation, motor outside one side is provided with the second tang for cooperate with the load casing. Its built -in end cover is playing under the prerequisite of traditional end cover support bearing effect, can not increase the axial dimensions of motor, and simultaneously ingenious design makes motor assembly process shorten greatly, increases unit interval output.

Description

A kind of built-in end cap motor

Technical field

The utility model relates to electric machine structure, is specifically related to a kind of motor of built-in end cap.

Background technology

Electric motor end cap generally refers to that axial dimension is greater than the lid at the motor two ends of radial dimension, Main Function is the locus of the axle determining rotor, need and multi-form bearing fit, be connected to by end cap on the shell of fixed electrical machinery stator, ensure the gap of rotor and stator.For compact(ing) machine design, traditional end cover designs can occupy very large axial assembly space, brings certain difficulty to assembly space design.The structure that the various motor in recent years market occurred is integrated with load or gear, or use traditional electric motor end cap, integratedly with load assembles, and such motor manufacturing technology does not need to change, and cost is lower; Removal end cap, is connected motor shaft with load or transmission shaft one word, even one-body molded, solves the problem that fitted position is excessive.In fact, under the requirement of miniaturized modularized design, by motor and load or transmission design integrated, axle, bearing share the development trend that will be following motor-drive technique.Current contradiction is mainly: shaft or a word axle are due to longer dimension, the moment of inertia produced during electric machine rotation can make motor shaft generation Radial Inertial, its shear stress makes axle easily be damaged, especially at the position that motor shaft is connected with load/transmission shaft.Meanwhile, need during the assembling of conventional motors end cap location, fastening, at least to need 8-10 firm screw itself and casing to be fixed, consuming time longer.

Utility model content

For the contradiction of motor driven systems Integration Design and motor size in prior art, the utility model provides a kind of motor of built-in end cap, its built-in end cap is under the prerequisite playing the effect of traditional endcap support bearing, the axial dimension of motor can not be increased, design makes motor assemble flow greatly shorten cleverly simultaneously, increases yield in unit time.

A motor for built-in end cap, comprises end cap, casing, motor shaft, bearing, and described bearing is arranged at described end cap central, and described motor shaft is by described bearing through described electric motor end cap, and described end cap and described casing are by seam elastic conjunction.

As the preferred mode of one, described motor case is connected with load housing and fixes, and in described end cap edge, motor internal side is provided with the first seam, for coordinating with described motor case; Outside motor side is provided with the second seam, for coordinating with load housing.

Further, described end cap diameter is less than described motor case external diameter, and described end cap diameter is less than described load housing outer diameter.

Accompanying drawing explanation

Fig. 1 is the utility model motor (connecing load or gearbox) cross-sectional view.

Fig. 2 is the electric motor end cap schematic diagram that the utility model relates to.

Fig. 3 is the generalized section of electric motor end cap along C-C ' of Fig. 2.

1 is motor case, and 2 is load or gear box casing, and 3 is end cap bodies, and 4 is motor stators, and 5 is rotors, and 6 is motor shafts, and 7 is bearing axles, and 8 is bearings, and 31 is first seams, and 32 is second seams.

Embodiment

Below, the accompanying drawing with reference to the part forming this specification illustrates in greater detail embodiments of the present invention.In all of the figs same reference marker added to same or similar part and omit the description.

The motor of the built-in end cap of the utility model, comprises motor case 1, motor stator 4, rotor 5, motor shaft 6, electric motor end cap body 3, wherein electric motor end cap body 3 center is provided with bearing 8, and motor shaft is through bearing 8, and supporting motor rotor 5 and motor stator 4 keep certain distance.Under normal circumstances, motor end terminating load.In field of vehicle drive, especially motor vehicle driven by mixed power drives field, also has and there is the situation that motor end connects speed changer, and speed changer connects vehicle drive axle.No matter be applied to which kind of field, all may run into the situation of motor driven systems modularized design.In the following description " load " represent the driven object of the motor be connected with motor, or speed changer.What this Figure of description 1 was shown is motor (connecing load or gearbox) cross-sectional view, and wherein motor case 1 and load housing 2 are fixed, and motor and load are formed as one, and motor shaft 6 is connected by spline with bearing axle 7.Should reduce as far as possible this axis of no-feathering to size, during to make electric machine rotation, power is passed to load with the shortest distance.Be arranged at the bearing 8 at end cap 3 center for lucky support motor axle 6 end and bearing axle 7 top.

End cap 3 edge is provided with fixing structure, coordinates with motor case 1 and load casing 2.Particularly, motor internal side, end cap 3 edge is provided with the first seam 31, and for coordinating with motor case 1, corresponding motor case Position Design has the seam matched with the first seam 31; Outside motor side, end cap 3 edge is provided with the second seam, and for coordinating with load housing 2, corresponding load housing 2 Position Design has the seam matched with the second seam 32.During assembling, end cap seam 31,32 and motor case 1, load housing 2 take the mode of interference fit.Consider the design of axial dimension and sealing, end cap 3 diameter, more preferably greater than motor case 1 interior diameter, is less than motor case 1 overall diameter.And end cap 3 diameter is preferably less than load housing 2 external diameter.

Describe technical characterstic of the present utility model with embodiment above, but the utility model is not limited to above execution mode.

Claims (3)

1. the motor of a built-in end cap, comprise end cap, casing, motor shaft, bearing, described bearing is arranged at described end cap central, and described motor shaft passes described electric motor end cap by described bearing, it is characterized in that, described end cap and described casing are by seam elastic conjunction.

2. built-in end cap motor according to claim 1, is characterized in that, described motor case is connected with load housing and fixes, and in described end cap edge, motor internal side is provided with the first seam, for coordinating with described motor case; Outside motor side is provided with the second seam, for coordinating with load housing.

3. built-in end cap motor according to claim 2, is characterized in that, described end cap diameter is less than described motor case external diameter, and described end cap diameter is less than described load housing outer diameter.