CN1029342C

CN1029342C - Motor assembling structure

Info

Publication number: CN1029342C
Application number: CN 93118511
Authority: CN
Inventors: 坂下广志; 山下淳
Original assignee: Sankyo Seiki Manufacturing Co Ltd
Current assignee: Nidec Instruments Corp
Priority date: 1992-10-09
Filing date: 1993-10-09
Publication date: 1995-07-12
Anticipated expiration: 2013-10-09
Also published as: GB2272028B; CN1086933A; GB2272028A; MY114760A; GB9320748D0; JPH0636340U; JP2578623Y2

Abstract

To roll products having good web thickness distribution by providing a rolling mill for adjusting excess metal which consists of upper and lower horizontal rolls on the inlet side or outlet side of an intermediate universal mill. Recessed parts 50 having the cross-sectional area that is equivalent to at least a quarter of the area of max. required excess metal that is determined from the target widening amount and the web thickness of product are provided on the peripheral surfaces at both right and left ends of the upper and lower horizontal rolls of the universal mill 3. Excess metal is formed in both end parts of web of the shape steel. The tip of flange of a material to be rolled is refining rolled with an edger mill which is arranged in proximity to the universal mill 3. At the same time, the rolling mill 40 for adjusting excess metal which consists of the upper and lower horizontal rolls is proximately provided on either of the inlet side or the outlet side of the intermediate universal mill. Excess metal parts 18 are pressed down and adjusted with the rolling mill 40. In this way, a series of H-shape steel products with optional web height is manufactured with good quality and extremely small numbers of rolls.

Description

Motor assembling structure

The present invention relates to the mounting structure of the used motor of various electrical equipment.

Structure shown in Figure 6 is an example of the mounting structure of existing motor.Rotation axis 11 rotates by bearing 12 and is supported freely, and bearing 12 is fixed by being pressed into methods such as housing 16, and rotor core 13 is fixed on the rotation axis 11, is wound with coil 14 in the rotor core 13.Be fixed with magnets of stator 17 on the inner peripheral surface of the housing 16 relative with rotor core 13, the upper cap of housing 16 is with side plate 18, and the support member 20 of supporting brush 19 is outstanding from side plate 18.Brush 19 and commutator 15 sliding contacts of being fixed on the rotation axis 11.In addition, on the 16A of the bottom surface of housing 16, have screwed hole 16B, with this bottom surface 16A as installed surface, with screw with motor mounting on used electrical equipment.Fig. 7 is the stereogram that bearing 12 is shown, and has an embedded hole 12C for embedding rotation axis 11 in the central.

Fig. 8 shows another example of the mounting structure of existing motor, and bearing 22 has discoideus flange portion 22A as shown in Figure 9, on this flange portion 22A, has screwed hole 22B.In addition, bearing 22 is by being fixed with the outer circumference end of flange portion 22A and the binding of housing 16.With the bottom surface 22C of bearing 22 as installed surface, with screw with motor mounting on used electrical equipment.

No matter being Fig. 6 or the structure of Fig. 8, all is as installed surface used electrical equipment to be installed with the bottom surface 16A of housing 16 and the bottom surface 22C of bearing 22, and the motor output of the moving axis of rotation in the future 11 is passed on institute's on-load.Here, this motor can be used as the drive source of various electrical equipment such as sound appliances such as tape recorder, portable laser phonograph and computer format floppy and information machine.When with motor mounting during, become very important as the perpendicularity between the installed surface of the rotation axis 11 of output shaft and machine in the various electrical equipment of this class.

Yet the mounting structure of existing motor has following variety of problems.

At first, in the structure of Fig. 6, determined that therefore certain limit is arranged because the vertical precision of rotation axis 11 and housing 16 bottom surface 16A is an accumulated size precision by each building block scale error, the perpendicularity between the installed surface of commentaries on classics dead axle and machine is lower.

Secondly, in the structure of Fig. 8, the overall weight of motor reaches the external force on the axial force direction such as the clamping pressure of boxlike phonographic record, puts on the screwed hole 22B that is opened on the bearing 22, but under the situation of bearing 22, exist following shortcoming with powder sintered manufactured:

(1) for keeping the intensity aspect relatively poor, therefore, vertical precision damages easily;

(2) when screw is screwed into screwed hole 22B, be easy to generate crackle on the bearing 22;

(3) because when tightening screw, the swarf of the bearing material of generation can enter in the motor, so can cause noise and rotate unusual.

In addition, owing to be applied with external force, be necessary fully to strengthen the constant intensity of this linking part at the linking part of bearing 22 and housing 16.

The objective of the invention is to,, provide a kind of mounting structure that can solve the motor of existing variety of issue at the problems referred to above.

Fig. 1 is the cutaway view that mounting structure first embodiment of motor of the present invention is shown;

Fig. 2 is the stereogram that major part among Fig. 1 is shown;

Fig. 3 is the cutaway view that second embodiment of the invention is shown;

Fig. 4 is the stereogram that third embodiment of the invention is shown;

Fig. 5 is the stereogram that fourth embodiment of the invention is shown;

Fig. 6 is the cutaway view that the mounting structure of existing motor is shown;

Fig. 7 is the stereogram that Fig. 6 major part is shown;

Fig. 8 is the cutaway view that the mounting structure of another existing motor is shown;

Fig. 9 is the stereogram that Fig. 8 major part is shown.

Below, with reference to accompanying drawing, embodiments of the invention are described.

Fig. 1 is the cutaway view that mounting structure first embodiment of motor of the present invention is shown, and 1 is rotation axis, and 2 for rotating the bearing that supports rotation axis 1 freely.Bearing 2 has discoideus flange portion 2A as shown in Figure 2, and has a plurality of through hole 2B, in addition, also has an embedded hole 2C in the central.This bearing 2 is made of sintered metal bearing, becomes the bottom surface 2D of the flange portion 2A that institute's electrical appliance installed surface is installed, is arranged to vertical with respect to the axis X of rotation axis 1.

Be fixed with rotor core 3 and commutator 5 on the rotation axis 1, be wound with coil 4 in the rotor core 3, will be pressed into housing 6, and fix on it by methods such as riveted joints with the upper surface 2E of bearing 2 bottom surface 2D opposition sides as casing.On the position corresponding of housing 6, have screwed hole 6A with the through hole 2B of above-mentioned bearing 2.6B is a protuberance.

7 is on housing 6 inner peripheral surfaces, and with respect to the magnets of stator that rotor core 3 is provided with, 8 for being covered in the side plate on housing 6 tops, and 9 are and the brush of commutator 5 sliding contacts, and 10 is an end bearing brush 9, and the other end protrudes in the support member outside the side plate 8.The metal material that housing 6 adopts by formation such as punch process.

The motor of this class formation is under the corresponding state of the screwed hole 6A of through hole 2B that makes bearing 2 and housing 6, by not shown screw is inserted from through hole 2B, is screwed into screwed hole 6A, is installed on the used electrical equipment.

If according to above-mentioned first embodiment, by adopting bearing 2, and will be arranged to vertically as the bottom surface 2D of the flange portion 2A of the bearing 2 of machine installed surface with respect to the axis X of rotation axis 1, the perpendicularity of rotation axis 1 and installed surface can be decided by bearing 2 single-pieces.Therefore, owing to can not be subjected to the influence of other building block scale errors, just can avoid the perpendicularity of rotation axis 1 and machine installed surface to reduce.

In addition,, but carry out, therefore, can prevent influence, all can obtain extraordinary constant intensity in the time of from beginning to using bearing 2 for the screwed hole 6A of the housing 6 that constitutes by metal material because tightening up of screw be not to carry out for bearing 2.That is:

(1) keep intensity no longer relatively poor, vertical precision can be not impaired;

(2) because tightening up of screw is not to carry out for bearing 2, therefore, bearing 2 can not crack.

(3) owing to do not produce the swarf of bearing material, therefore just can not cause noise and rotate unusual.

(4) in addition, the supporting rotation axis 1 power beyond power no longer be applied on the linking part of bearing 2 and housing 6, and, since with motor mounting to machine, the constant intensity of bearing 2 and housing 6 will be enhanced.Therefore, owing to no longer need to bear motor own wt and the such constant intensity of axial force, so, can save to aim at and strengthen structure and the manufacturing procedure that constant intensity is used, avoid cost to improve.

Shown in Figure 3 is the second embodiment of the present invention, the example of the protuberance 6B that it shows at arranged outside housing 6.In view of the above, owing to be the direction difference of protuberance 6B only, also can obtain effect same with above-mentioned first embodiment.

Shown in Figure 4 is the third embodiment of the present invention, it shows the example of otch 2F with the through hole 2B of replacement flange portion 2A is set, in addition, shown in Figure 5 is the fourth embodiment of the present invention, it shows to improving the precision of rotation axis 1 fixed position, near the axle embedded hole 2C of flange portion 2A the 2G of recess portion is set.In addition, in the 4th embodiment, not a plane to the installed surface 2D of machine, and be divided into a plurality of planes.Adopt this third and fourth embodiment, can obtain same effect with above-mentioned first and second embodiment.

In addition, through hole 2B or the otch 2F that is arranged on the bearing 2 flange portion 2A need not be split into a plurality of, minimum also passable as if only establishing one.In addition, the protuberance 6B that is arranged on the housing 6 is impassable yet.

In sum, if adopt the present invention, owing to be by making the through hole that is arranged on the bearing corresponding with the screwed hole on being arranged at housing, screw is screwed into screwed hole, thereby with motor mounting on institute's electrical appliance, therefore avoided perpendicularity reduction between rotation axis and machine installed surface, simultaneously, can prevent influence bearing.

Claims

1, a kind of mounting structure of motor, it comprises: the rotor portions with rotation axis; With the opposed stator department of this rotor portions; Rotate and support the sintered metal bearing of described rotation freely; Be made of one with described sintered metal bearing, have flange portion with respect to the installed surface of described rotation axis axis approximate vertical; The housing that contains described rotor portions and described stator department; Be formed at the screwed hole of the installation usefulness on the described housing; The through hole that forms on the screwed hole correspondence position with described installation in described flange portion; Make described through hole corresponding with screwed hole, will twist from the screw that described through hole inserts and close in described installation screwed hole with described installation, thus motor mounting is good.

2, the mounting structure of motor as claimed in claim 1 is characterized in that: a side relative with the flange portion installed surface is fixed on the housing.

3, a kind of mounting structure of motor, it comprises: the rotor portions with rotation axis; With the opposed stator department of this rotor portions; Rotate and support the sintered metal bearing of described rotation freely; Be made of one with described sintered metal bearing, have flange portion with respect to the installed surface of described rotation axis axis approximate vertical; The housing that contains described rotor portions and described stator department; Be formed at the screwed hole of the installation usefulness on the described housing; The notch that forms on the screwed hole correspondence position with described installation in described flange portion; Make described notch corresponding with screwed hole, will twist from the screw that described notch inserts and close in described installation screwed hole with described installation, thus motor mounting is good.

4, the mounting structure of motor as claimed in claim 3 is characterized in that: a side relative with the flange portion installed surface is fixed on the housing.