CN2143383Y

CN2143383Y - Electric motor for sowing machine

Info

Publication number: CN2143383Y
Application number: CN 92238377
Authority: CN
Inventors: 王贤禄
Original assignee: NINGBO MICRO AND SPECIAL MOTOR FACTORY
Current assignee: NINGBO MICRO AND SPECIAL MOTOR FACTORY
Priority date: 1992-10-16
Filing date: 1992-10-16
Publication date: 1993-10-06
Anticipated expiration: 2002-10-16

Abstract

The utility model discloses an electric motor for a sewing machine, comprising a shell component, a stator component, a rotor component, an output belt wheel, and rack pin accessories. With simple structure, the power of the electric motor has larger adaptability in view of the convenient regulating measures of iron cores with various powers. The weight of the electric motor for a sewing machine is 1/5-1/10 of clutch industrial sewing machines, and the selling price is 1/3-1/5 of the clutch industrial sewing machines. The utility model provides a new electric motor with small volume, light weight, free operation, convenient speed regulation and low price for market, breaks the previous traditional concept that electric motors is served for domestic machine or industrial machines singly, and enlarges the use value of electric motors.

Description

Electric motor for sowing machine

The utility model relates to the motor of a kind of domestic sewing machine, the operation of industrial sewing machine motorized.

Existing sewing machine has single phase series motor (small-sized) and industrial sewing machine clutch motor two big classes.Generally between 70W～150W, because it is little to exert oneself, characteristic is soft, can only be used for domestic sewing machine and simple and easy overedger, is unsuitable on the clothes process line and uses for its input power of single phase series motor.Clutch motor is big because of exerting oneself, noise is low and stop characteristics such as pin makes things convenient for is widely used in industrial sewing machine.But because its complex structure, feed consumption are many, therefore weight is the former 5～10 times, and fetch long price, again because of belonging to the continuous operation situation, the empty load of motor loss is big, and operation has only a kind of speed, is difficult to satisfy the requirement of different lining processing, different workman's operant levels, power surplus sometimes in the industrial machine of part is supporting causes energy waste.

The purpose of this utility model is to overcome the defective of prior art and a kind of domestic sewing machine, industrial sewing machine dual-purpose is provided, and power is between above-mentioned two kinds of motor, and rotating speed can need to adjust at any time by the user, can satisfy the motor that different linings are made requirement.

The utility model is achieved by the following scheme: sewing machine electromotor is made up of housing parts, stator component, rotor part and output pulley and frame pin annex.

Its special character is that the forward and backward housing in the housing parts is drawn into the shell shape by steel plate, so that alleviate complete machine weight, and by screw rod, nut connection one.Stator component reaches the length that changes stator core and rotor core with the length that the quantity that increases and decreases sleeve pipe changes sleeve pipe, thereby changes motor speed power, realizes the adjustability of power.The main shaft two supports of rotor part is on oiliness bearing, matched in clearance, and the oiliness bearing pressing plate is an integral type, has the indent semicircle sphere, it and the fastening pin of housing and malthoid circle form the bearing pedestal of fastening oiliness bearing, bearing is pasted tightly mutually, increase normal pressure and frictional force, prevent that the bearing trace from rotating and the vibration that makes that the motor feels hot.The fixing tube-axial fan with Reinforced Nylon system is housed on the main shaft, has solved the voice that causes because of material frequencies, air quantity can be adjusted automatically, improve cooling effect, improve property easy to assembly.

The sewing machine electromotor of pressing the utility model design is simple in structure, because what multiple power iron core was considered the time in design makes things convenient for the adjustment measure, make power of motor have bigger adaptability, with the clutch industrial sewing machine mutually weight/power ratio have only its 1/5～1/10, price has only its 1/3～1/5, for market provides a kind of volume little, in light weight, operation freely, speed governing is convenient, cheap a kind of new motor, broken the single traditional concept of serving family expenses machine or industrial machine of former motor, enlarge the use value of motor, and partly substituted the industrial sewing machine clutch motor.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that the A of Fig. 1 is to outline drawing.

Fig. 3 is that the B of Fig. 2 is to outline drawing.

Elaborate according to remaking below the above-mentioned accompanying drawing embodiment.

As Fig. 1～3 as can be known, forward and backward housing (16) in the housing parts of sewing machine electromotor, (29) are drawn into the shell shape with metal foil, connect into cavity body structure by two groups of screw rods (15), nut, have ventilating window on the housing, the both sides punching out has the fastening pin (27) of recessed semicircle sphere, draws lead (22) and is drawn by the sheath (23) that is inlaid on the housing wall.The inner chamber of housing is provided with stator component and rotor part.

Stator component comprises sleeve pipe (7) and the stator core (8) that is sleeved on the screw rod (15), stator winding (12) is wound in the stator core (8), and it is isolated with insulating paper (9), sleeve pipe (7) is provided with at least one, consider the manufacturability issues of ebonite bush processing, length has certain limitation, therefore increases length with the quantity that increases sleeve pipe, realizes the adjustability of stator, rotor length.

The main shaft of rotor part (19) two supports is on oiliness bearing (17), matched in clearance, this oiliness bearing (17) is arranged in the bearing pedestal of being made up of the fastening pin of housing (27), oiliness bearing pressing plate (1), oil felt pad (28), the fastening pin of housing (27) is directly become by the housing punching out, the semicircle sphere that it and oiliness bearing pressing plate (1) all have indent makes bearing be attached to tightly mutually in the above-mentioned ball face after the grafting.The tube-axial fan (14) of Reinforced Nylon system is housed on the main shaft (19), and isolated by packing ring (20) between it and the oiliness bearing (17), fan (14) plugs with concavo-convex gap slot with preceding mounting (13).Forward and backward mounting (13), (25), rotor core (11), commutator (3) are fixed on the main shaft (19), 4 circumference uniform distribution convex tendon close-fittings with main shaft (19) are fixed, rotor core (11) is formed by the compacting of multi-disc silicon steel sheet closed assembly, use filler rod (24) compacting rotor winding (10) again, rotor winding (10) is wound on the forward and backward mounting (13), (25) of rotor core (11).Carbon brush holder (26) is fixed on the screw rod (15), and the carbon brush saddle is housed, and does not have carbon brush (6), spring (5) and carbon brush lid (4) in it.Be separated by by oil baffle washer (2) between commutator (3) and the oiliness bearing (17).

The overhanging end of main shaft (19) is equipped with power output pulley (18), by screw.

Frame pin annex is made up of frame pin (21), plugs and sockets (31), the power line (32) of fork-shaped, forked frame pin (21) is articulated on the screw rod (15), two ends dress insulating washer (30), become bikini to be connected with sewing machine, because frame pin (21) has the vertical direction elongated slot (33) on horizontal direction elongated slot (34) and two the fork-shaped pin, thus belt at X, the Y direction is adjustable.

Claims

1, a kind of sewing machine electromotor comprises the housing parts that is connected one by screw rod (15), nut; Sleeve pipe of stator component (7) and stator core (8) are sleeved on the screw rod (15), and stator winding (12) is wound in the stator core (8), and isolated with insulating paper (9); The main shaft of rotor part (19) two supports is gone up and matched in clearance at oiliness bearing (17), fixing fan (14), forward and backward mounting (13), (25), rotor core (11) and commutator (3) are housed on the axle, and rotor winding (10) is wound in the rotor core (11); Carbon brush holder (26) is fixed on the screw rod (15), and carbon brush (6), spring (5), carbon brush lid (4) are housed on the frame; The overhanging end of main shaft (19) is equipped with the belt wheel (18) of power output; And the frame pin annex that is connected with sewing machine is housed on screw rod (15), it is characterized in that:

A. the forward and backward housing (16) (29) of housing parts is drawn into the shell shape with steel plate;

B. the sleeve pipe that is provided with in the stator component (7) at least one, to adapt to the adjustability of stator, rotor core length;

C. fan (14) is made axial-flow type with Reinforced Nylon, and it and preceding mounting (13) plug with concavo-convex gap slot;

D. oiliness bearing pressing plate (1) is an integral type, has the indent semicircle sphere, and it and the fastening pin of housing (27) and malthoid circle (28) form the bearing pedestal of fastening oiliness bearing (17).

2, sewing machine electromotor as claimed in claim 1 is characterized in that frame pin annex comprises the frame pin (21) that is connected with screw rod (15), has plugs and sockets (31) and power line (32) on the frame pin.

3, sewing machine electromotor as claimed in claim 1 is characterized in that having ventilating window on forward and backward housing (16), (29).

4, as claim 1 or 2 or 3 described sewing machine electromotors, it is characterized in that frame pin (21) is a fork configuration, it has the vertical direction elongated slot (33) on horizontal direction elongated slot (34) and two the fork-shaped pin.