CN2045910U

CN2045910U - Electric motor

Info

Publication number: CN2045910U
Application number: CN89202345U
Authority: CN
Inventors: 黄智侬; 莫锦成
Original assignee: Johnson Electric Co ltd
Current assignee: Johnson Electric Co ltd
Priority date: 1988-05-25
Filing date: 1989-02-28
Publication date: 1989-10-11
Also published as: DE8906384U1; GB8812365D0; JPH01171558U; GB2219144A

Abstract

The utility model discloses an electric motor, which comprises a frame (11, 12), a stator (13, 14), an electric brush device (15) supported by the frame, and rotors (16, 17, 18) arranged on bearings (19, 20) which are supported by the frame; one of the bearings (20) is clamped on the supporting seat (30) of the frame by a spring plate clamp (31); the spring plate clamp (31) is provided with the arched shape part (31a) adhered tightly to the circular column part (28) of the bearing (20), and two supporting arms (31b) which are fixed or bolted on the frame.

Description

Electric motor

The present invention relates to a kind of motor.

Universal motor need be equipped a die casting framework as you know, to support the brushgear that bearing of motor and motor are used.In general, used bearing is the self-adjusting bearing, and the ring-type spring plank that it is had the finger piece that extends to the center is fixed on the bearing of corresponding local globulate in the framework, and the inner end engages of finger piece is on the local globulate part of corresponding bearing.

Motor provided by the invention comprises a framework, and a stator is by the brushgear of frame supported and be installed in by the rotor in the bearing of frame supported; One of described bearing radially is fixed on the bearing of framework by spring plank anchor clamps; Described spring plank anchor clamps have the arcuate part that is adjacent on the column part of bearing and at two support arms of each end of arcuate part, support arm fix or bolt on framework.

According to structure of the present invention, might reduce frame content and save material and weight reduction.

Preferablely be that described bearing has the part of two local globulates and is clipped in circular cylinder shaped portion between the two, and bearing is local globulate.

Useful is that the free end of the support arm at arcuate part two ends is fixed in the groove corresponding in the framework.

The present invention will only more specifically be described with example with reference to accompanying drawing now, wherein:

Fig. 1 is the plane graph of motor one embodiment of the present invention;

Fig. 2 is the side view of the motor of Fig. 1;

Fig. 3 is the perspective view of Fig. 1 and 2 motor partial cross sections;

Fig. 4 is the sectional view of the bearing represented at Fig. 3; And

Fig. 5 is the side elevation view of spring plank clip among Fig. 3, and figure middle (center) bearing position is represented with broken line.

With reference to accompanying drawing, motor described herein is a kind of universal motor 10, and it comprises by die-cast metal, two parts 11,12 of the framework of making as aluminium alloy.Two of framework partly 11 and 12 is fixed on the band stator coil 14U shape laminated stator iron core 13.Frame part 11 supports the brushgear 15 that comprises plastics brush holder 15a and carbon brush 15b.Comprise axle 16, the armature coil 17 of coiling and commutator are rotatably installed in respectively on the two parts 11 and 12 incidental sintered

bearings

19 and 20 by framework.Worm screw 21 is formed on an end of axle 16.Frame part 12 supports two sleeves 22 that are installed in rotation on the tubular holder 23 that casts on the frame part 12.One end of each sleeve 22 have one fuse with it and with the worm gear 24 of worm screw 21 engagements.Each sleeve 22 has through hole 25 to be used for holding and clamping food mixer tool, as blender.In the industry the people all know this this how to do, just no longer described here.

Bearing 19 and 20 respectively has two local globulate parts 26,27 and is clipped in their central column parts 28.This is the typical case of general self-adjusting bearing.

Bearing 19 is fixed on the local globulate bearing 29 of frame part 11 by a ring-type spring plank (not shown), and this is that the people is familiar with in the industry.

The bearing 20 quilts normally spring plank anchor clamps 31 of U-shaped are fixed on the frame part 12 interior corresponding cup-shaped support 30.Bearing 30 is local spherical in shape, and anchor clamps 31(shows the most clearly in Fig. 3 and 5) comprise one and be launched into 130 ℃ arcuate part 31a and by part 31c, two parallel support arm 31b are linked on the opposite two ends of arcuate part 31a, and support arm 31b continues to link the free end 31d of outside turning.

The arcuate part 31a of spring plank anchor clamps 31 is adjacent on the column part 28 of bearing 20, and the two ends of two support arm 31b of the spring plank anchor clamps 31 that strut from column part 28 are embedded in 32 li of the corresponding grooves of frame part 12, and in the zone of its adjacent grooves 32 in the end portion 31d that excurvation goes out withstands on frame part 12.

Each groove 32 is L-shaped and have branch groove 32a and a 32b.For bearing 20 is fixed on the bearing 30, the terminal 31d of spring plank anchor clamps passes the branch groove 32a of groove 32 and anchor clamps move in support arm 31b enters the branch groove 32b of groove 32 arcuate part 31a with regard to the direction that is pulled to stator core 13 on the column part 28 of bearing 20.

Spring plank anchor clamps 31 have applied a radial load to bearing 20 and do not resemble apply axial force the prior art structure (being introduced) when this specification is talked about bearing 19.

Owing to use spring plank anchor clamps 31 and bearing 30 just might reduce frame content, save material and weight reduction.

Embodiment described above just illustrates that with method for example the people who is skilled in technique just can obviously find out multiple change in the situation that does not exceed claim scope in the annex, and for example, two parts of framework can be linked into a whole mutually. In addition, the present invention is not limited to universal motor, also can be applied to other motor, such as the permanent magnet dc motor.

Claims

1, a kind of motor comprises a framework (11,12), and a stator (13) is by the brushgear of frame supported (15) and be installed in by the rotor on the bearing of frame supported (19,20) (16,17,18); It is characterized in that: one of described bearing (20) is fixed on the bearing (30) of framework by spring plank anchor clamps (31) in radial direction; Described spring plank anchor clamps (31) have the arcuate part (31a) of the column part (28) that is adjacent at bearing and at two support arms (31b) of each end of arcuate part, support arm fix or bolt on framework.

2, as desired motor in the claim 1, it is characterized in that a described bearing (20) has two parts part (26,27) spherical in shape and is clipped in column part (28) in the middle of their, its bearing (30) also is local spherical in shape.

3,, it is characterized in that two ends of two support arms (31b) of strutting from arcuate part (31a) are fixed on the corresponding groove (32) of framework as desired motor in the claim 1.

4,, it is characterized in that spring plank anchor clamps (31) make bearing (20) aim at bearing (30) as desired motor in the claim 2.

5,, it is characterized in that framework (11,12) is the framework of die casting as desired motor in above each claim.

6, as desired motor in the claim 5, it is characterized in that framework separated into two parts (11,12), respectively be fixed on the two ends of stator (13) subtend of lamination structure.

7,, it is characterized in that it is a universal motor as desired motor in above each claim.

As desired motor in above each claim, it is characterized in that 8, it is the blender motor.