CN2270312Y

CN2270312Y - Improved motor casing

Info

Publication number: CN2270312Y
Application number: CN 96215695
Authority: CN
Inventors: 邹博治
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-09
Filing date: 1996-08-09
Publication date: 1997-12-10
Anticipated expiration: 2006-08-09

Abstract

The utility model relates to a motor casing, which solves the problem of abrasion damage of a rotating shaft. The utility model is an improved motor casing, and the improved motor case comprises a casing body, a hollow shaft lining part, and a motor shaft register part, the middle part of which is provided with a through hole. The utility model is characterized in that one face of the casing body, which covers a motor, forms a concave and is convexly provided with the hollow shaft lining part, and the hollow shaft lining part is provided with an axial through hole; the inner diameter of the through hole is larger than the outer diameter of the hollow shaft lining part, and the inner diameter of the hollow shaft lining part is a little larger than the diameter of the motor shaft register part; in addition, the inner diameter of the through hole is gradually reduced from a concave end of the casing body to the other end thereof. The utility model can be used for protecting motors.

Description

Improved motor case

The utility model relates to motor case, especially refer to a kind of architecture advances motor case.

Existing motor case is as shown in Figure 4: through hole 71 is by hollow brass 7 hollow positions that are entrenched in motor case 8, through hole 71 axially runs through motor case 8 and through hole 71 internal diameters than motor shaft 9 slightly larger in diameter along brass 7, and the size of internal diameter is unanimity, therefore, when if fixing hole is also not exclusively symmetrical on fixing hole of motor case 8 81 and the power set, often cause motor 9 and the contacted phenomenon of brass 7 inner edges, when revolution, though axle sleeve 91 is arranged, but rotating shaft 9 still can rub mutually with the inner edge of brass 7, so the motor case of this structure is not ideal enough.

The purpose of this utility model is that the said motor shell mechanism is improved, and a kind of improved motor case is provided.

The purpose of this utility model is achieved in that improved motor case, it comprises housing, hollow axle bush body, motor shaft engaging body, there is through hole in central authorities, it is characterized in that: this housing covers the one side of power for caving in and convexing with a hollow axle bush body, this hollow axle bush body is provided with axial through hole, this through hole internal diameter is bigger than the quill shaft body diameter, and the internal diameter of this hollow lining axis body is again than the slightly larger in diameter of itself and rotating shaft engaging body, in addition this through hole internal diameter from housing cave in an end to other end for dwindling gradually.

Above-mentioned design, the internal diameter of hollow axis body is than the motor shaft slightly larger in diameter, and this through hole is rough suitable at the diameter of housing after in addition the internal diameter of end is inserted in the hollow axis body with motor shaft, and because of the through hole internal diameter is big than the quill shaft body diameter, thereby reaches the effect of the rotating shaft that no longer rubs.

Below by drawings and Examples the utility model is described further again.

Fig. 1 is the utility model perspective exploded view;

Fig. 2 is a part cross-sectional schematic behind sheathed hollow axis body of the utility model and the motor shaft;

Fig. 3 is sheathed hollow axis body of the utility model and motor shaft askew status cross-sectional schematic;

Fig. 4 is existing motor case configuration state schematic diagram;

As Fig. 1, motor 1 is made up of by retaining element 322 lockings power set 2, first and

second shell

3,4; Power set 2 comprise rotor 21, stator 22 and lead 23, are provided with rotating shaft 211 in the rotor 21, the rotating shaft 211 outer quill shaft bodies 212 that are arranged with; Four ora terminalis are provided with fixing hole 24; First shell 3 is housing, and this shell is made of plastics, and four ora terminalis have and fixing hole 24 corresponding fixing holes 31.

As Fig. 2, the appropriate location of housing depression one side 33 outwards convexes with a hollow axle bush body 32, this hollow axle bush body 32 has through hole 321 also for axially running through quill shaft, and this hollow axle bush body 32 is bigger than the external diameter of hollow axis body 212 at through hole 321 internal diameters of housing depression one side 33, and the internal diameter of hollow axis body 212 again with the slightly larger in diameter of rotating shaft 211 engaging bodies, again, hollow axle bush body 32 quite is sliding fit at the through hole 321 of other face of depression and the diameter of rotating shaft 211 engaging bodies, and the internal diameter of this through hole 321 is held to dwindling gradually in addition for an end 33 to the depression that caves in from housing, these second shell, 4 structures and first shell, 3 structures are identical, so will not give unnecessary details.

As shown in Figure 3, during motor 1 combination, only need

first shell

3,2 on second shell 4 and power set are fixed by retaining element, can finish combination, but if these second fixing holes 31 on this first shell 3, with first fixing hole 24 of power set 2 be not fully at once, though then the combination back is sheathed with the rotating shaft 211 of hollow axis body 212, can't run through this first shell 3 from the center, but because of the through hole 321 of this hollow axle bush body 32 big with the engaging body diameter of rotating shaft 212 with power set 2 adjacent sides than hollow axis body 212, so, the also unlikely hollow axis body 212 that makes contacts with the inner edge of hollow axle bush body 32 with the engaging body of rotating shaft 211, and the normal operation that also can keep motor 1.

Claims

1, improved motor case, it comprises housing, hollow axle bush body, motor shaft engaging body, there is through hole in central authorities, it is characterized in that: this housing covers the one side of power for caving in and convexing with a hollow axle bush body, this hollow axle bush body is provided with axial through hole, this through hole internal diameter is bigger than the quill shaft body diameter, and the internal diameter of this hollow lining axis body is again than the slightly larger in diameter of itself and rotating shaft engaging body, in addition this through hole internal diameter from housing cave in an end to other end for dwindling gradually.

2, improved motor case as claimed in claim 1, it is characterized in that: this case body is made of plastics.