CN2269023Y - Small synchronous motor with transmission - Google Patents

Abstract

A small synchronous motor with a transmission device is assembled with a small synchronous motor and its transmission device. It includes a motor part and a transmission part. The motor part is led out by two magnetic pole pieces, and the rotor is set in the transmission device In the accommodating part, a transmission gear set and an anti-reverse device are arranged in the accommodating part. It has stable operation, high efficiency and small size.

Description

Small synchronous motor with transmission

The utility model relates to a small synchronous motor with a transmission device.

The structure of the AC synchronous motor in the prior art can be described with reference to accompanying drawing 3 . Fig. 3 is an exploded view of an AC synchronous motor in the prior art. It can be seen from Fig. 3 that the AC synchronous motor in the prior art is composed of a coil group 7, a stator 8, a rotor 9, an upper shell 10 and a lower shell 10'. The current AC synchronous motor has the following disadvantages:

1. In view of the manufacturing process and design reasons, the coil group 7 and the rotor 9 are bulky, and the magnetic field generated by the coil group 7 is directly excited, so it is difficult to start, and the components rub against each other, resulting in high magnetic loss, easy to generate noise, and temperature rise High, high power consumption rate, does not meet the requirements of energy saving and precise operation;

2. Since the stator 8 is punched, the accuracy of its induced magnetic field is low, and it is easily damaged and deformed during the manufacturing process, so its practicability is poor;

3. Since the upper and lower shells 10 and 10' are metal shells, and the bearings are made of powder metallurgy or lathe-made copper sleeves, the cost after riveting is high, the accuracy is low, and the concentricity is difficult to control and easy to wear;

4. The AC synchronous motor in the prior art is bulky because it is a combination of the above components, and it is assembled by riveting, which is difficult to assemble and manufacture.

Therefore, the purpose of this utility model is to provide a small synchronous motor with a transmission device that is easy to install, accurate in positioning and compact in structure.

In order to achieve the above object, the utility model provides a small synchronous motor with a transmission device, which includes an accommodating part, a gear set and a motor, wherein the motor also includes a coil part, two magnetic pole pieces and a rotor , each of the two pole pieces has an end and a recess, the two ends are respectively inserted into the through hole of the coil part from both sides, the two recesses form a circular hole, and the rotor is arranged in the circular hole; the two pole pieces are positioned on the container.

The utility model has the advantage of the small-sized synchronous motor of transmission device to be:

1. The stator pole pieces are assembled in different planes and precisely positioned, resulting in a large magnetic field phase shift, that is, increasing the rotational torque, making starting easy and fast, and completely eliminating the starting dead angle problem caused by the torque zero point of this type of motor;

2. Combining the transmission gear, the anti-reversal device and the rotor, it is easy to apply and design, and avoids quality problems caused by improper assembly, and this synchronous motor seals these three components in a plastic component. Therefore, it can achieve high precision, low noise, and no leakage of lubricating oil, which greatly improves the operating life of the motor, and has dust-proof effect, which can be used in harsh environments;

3. All components are fixed by plastic welding and snap-fitting, which is very firm, resistant to collision and vibration, and low in cost;

4. Since the coil is wound with fine wire and the rotor is made of iron powder magnetized by die-casting, the overall volume of the motor is small, and there is no friction surface between the components, so the noise and temperature rise are low.

Describe preferred embodiment of the present utility model in detail below with reference to accompanying drawing, in accompanying drawing:

Fig. 1 is an exploded view of the utility model;

Fig. 2 is the assembly drawing of the embodiment of the utility model;

Fig. 3 is an exploded view of a small AC synchronous motor in the prior art.

As shown in FIGS. 1 and 2 , the utility model includes a coil part 1 , two pole pieces 2 and 3 , a rotor 4 , an accommodating part 5 and a gear set 6 .

The coil part 1 is composed of a fine multi-turn enameled wire 11 wound on an insulating frame 12. Conductive holes 13, 14 are provided on both sides of the insulating frame 12 to connect the two ends of the enameled wire 11, and are connected by two conductive metal rods 15, 16. Power supply, and a through hole 17 is set in the winding of the enameled wire 11, and the hole 17 is used to insert the ends 21, 23 of the two electrode sheets 2, 3.

The two pole pieces 2, 3 are respectively arranged on both sides of the coil part 1, and are plate-shaped and symmetrical to each other. Ends 21, 31 and recesses 22, 32 are respectively arranged on them, wherein the two ends 21 and 31 can be up and down. When overlapping, its length, width and thickness are all matched with the through hole 17, that is, the ends 21, 31 of the two pole pieces 2, 3 overlap and can be inserted into the through hole 17; and, the two ends 21, 31 overlap And when put into the through hole 17, the two recesses 22, 32 just form a circular hole, the two recesses 22, 32 are not in contact, and the circular hole just allows the rotor 4 to be placed therein. Several positioning holes 23 , 33 are respectively provided on the two pole pieces 2 , 3 to combine with the accommodating portion 5 .

The structure of the rotor 4 is the same as that of the prior art. It is made of iron powder through die-casting and magnetization. A central shaft 41 is fixed in the center, and a worm screw 42 and an anti-backward plate 43 are arranged on the central shaft 41 .

The accommodating part 5 is a non-magnetic body, including a main body 51, a base 52 and an upper seat 53, which together form a closed structure; two opposite magnetic pole pieces 2, 3 are arranged between the main body 51 and the base 52 below; the main body 51 A gear set 6 and an anti-reverse device are arranged inside.

The main body 51 is a square body with upper and lower openings, and a circular opening 511 is arranged at its lower part. 4 set it. Slots 514 , 515 are provided on the two side walls 512 , 513 of the main body 51 for accommodating the gear set 6 . The lower parts of the two side walls 512, 513 of the main body 51 are provided with convex plates 516, 517, and a plurality of holes 518 are provided thereon.

The base 52 is a plate shape, and its length and width are approximately equal to the bottom of the main body 51; a circular groove 521 and a central hole 522 are set on the base 52, and a horizontal step is established from the center to both sides, and the step is in line with the The lower part of the main body 51 has a similar stepped shape; several protrusions 523 are provided on the two outer sides of the circular groove 521, and a partition 524 is provided on the side of the base 52 close to the coil. The upper seat 53 covers the top of the main body 51 , and inserts the two pressing blocks 531 , 532 into the slots 514 , 515 of the main body 51 to position the gear set 6 .

The above-mentioned protrusions 523 form a tight fit with the positioning holes 23, 33 of the pole pieces 2, 3 and the holes 518 on the main body 51, so as to clamp and accurately position the two pole pieces 2, 3, so that the two recesses 22, 32 Form a round hole (but the two pole pieces 2, 3 are not in contact with each other here), this round hole is matched with the opening 511 of the main body 51 above and the circular groove 521 of the base 52, and is used for installing the rotor 4, and makes The central shaft 41 of the rotor 4 is inserted into the central hole 522 , and the worm 42 cooperates with the gear set 6 .

The gear set 6 is connected in series by a shaft rod 61, which includes a driven gear 62, two bearings 63, 64, a reverse anti-reverse bump 65 and a transmission gear 66; wherein the shaft rod 61 can be placed in the two bearings 63, 64 Rotate, the driven gear 62 cooperates with the worm screw 42, the anti-reverse projection 65 cooperates with the anti-reverse plate 43, and the transmission gear 66 then outputs directional rotation outwards. The aforementioned bearing 63 is disposed in the slot 515 , and the bearing 64 is disposed in the slot 514 . The two bearings 63 , 64 are sealed and pressed together by the lower part of the upper seat 53 , so that the gear set 6 is stably locked in the main body 51 to transmit the rotational kinetic energy of the rotor 4 .

Based on the above, each element is combined into a small synchronous motor and its transmission device with compact structure and high efficiency, and the protection of each transmission element is perfect.

Claims (2)

1. small-sized syncmotor that has transmission device, it comprises motor part and running part, it is characterized in that running part comprises holding part and gear train, gear train is located in this holding part; Coil portion, two pole pieces and rotor are drawn together in the motor part subpackage, two pole pieces respectively have an end and a recess, insert in the through hole of coil portion from both sides respectively at these both ends, two recesses stretch into and are fixed in the holding part and form a circular hole, and described rotor is located in this circular hole and is positioned among the holding part.

2. the small-sized syncmotor that has transmission device according to claim 1 is characterized in that described running part also comprises anti-reverse-rotation device, and this anti-reverse-rotation device is located within the described holding part.

Images