CN218850568U

CN218850568U - Automatic speed measuring motor for fan

Info

Publication number: CN218850568U
Application number: CN202222914785.6U
Authority: CN
Inventors: 张红蕾
Original assignee: Changzhou Baojie Motor Manufacturing Co ltd
Current assignee: Changzhou Baojie Motor Manufacturing Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-04-11
Anticipated expiration: 2032-11-03

Abstract

The application relates to an automatic speed measuring motor for a fan, which belongs to the technical field of motors and comprises a casing, wherein a stator is fixed on the inner wall of the casing, a rotor assembly is arranged in the middle of the stator in a matching mode, a front end cover and a rear end cover are respectively arranged at the two ends of the casing, the rotor assembly comprises a rotating shaft and a rotor fixed on the surface of the rotating shaft, a magnetic ring installation assembly is pressed on the rotating shaft and comprises a magnetic ring base, the magnetic ring base is fixed on the rotating shaft, and a magnetic ring is fixed on the magnetic ring base. This application only need can realize the output of motor speed through increasing one set of magnetic ring installation component and circuit board, and is convenient direct, no longer restricts the motor shaft and whether exposes outside, also need not the artificial measuring motor speed of going, can the operation of direct drive next terminal equipment after the motor reaches appointed rotational speed.

Description

Automatic speed measuring motor for fan

The technical field is as follows:

the application relates to the technical field of motors, in particular to an automatic speed measuring motor for a fan.

Background art:

at present, a traditional alternating current stepping motor for supporting fan use does not all possess the function of surveying the rotational speed, and traditional alternating current stepping motor does not have signal output, the rotational speed of feedback motor that can not be very directly perceived quick, and the method of testing the speed commonly used is as follows: light reflection method, sticking a piece of sensitive paper on the rotating shaft of the motor, then using a velocimeter to measure the speed of the sensitive paper, and reading out the data. Although the method has low cost, the method has great limitation, and the operation can be convenient only by directly exposing the rotating shaft outside.

And the motor assembles inside back in the fan, can't make things convenient for audio-visual pivot of seeing, can't measure the rotational speed of motor, can't reach the next terminal equipment of timely drive rapidly after appointed rotational speed according to the motor, and need artificially measure the speed, no continuity.

The utility model has the following contents:

in order to solve the problem, the application provides an automatic speed measuring motor for a fan, which adopts a Hall switch detection method.

The application provides an automatic speed motor for fan adopts following technical scheme:

a motor body comprises a casing, wherein a stator is fixed on the inner wall of the casing, a rotor assembly is arranged in the middle of the stator in a matching manner, a front end cover and a rear end cover are respectively arranged at two ends of the casing, the rotor assembly comprises a rotating shaft and a rotor fixed on the surface of the rotating shaft, a magnetic ring mounting assembly is pressed on the rotating shaft and comprises a magnetic ring base, the magnetic ring base is fixed on the rotating shaft, and a magnetic ring is fixed on the magnetic ring base;

and a mounting lug is fixed on the front end cover corresponding to the position of the magnetic ring mounting component, a circuit board is fixed on the mounting lug, and a Hall element is arranged on the circuit board.

The Hall element is correspondingly arranged outside the circumference of the magnetic ring.

And a singlechip is integrated on the circuit board and used for pulse counting and feeding back an output signal.

Preferably, the magnetic ring base is an aluminum magnetic ring base.

By adopting the technical scheme, the aluminum magnetic ring base has the advantages of light weight and difficulty in influencing the magnetism of the magnetic ring.

Preferably, the rotating shaft is provided with a fan blade, and the fan blade is arranged on one side of the front end cover.

By adopting the technical scheme, the fan blades rotate along with the rotating shaft, the motor can be cooled, and a circuit board can be protected to a certain extent.

In summary, the present application includes at least one of the following beneficial technical effects: this an automatic speed motor for fan only need can realize motor speed's output through increasing one set of magnetic ring installation component and circuit board, and is convenient direct, no longer limits in whether motor shaft exposes outside, also need not the manual measure motor speed that goes, can the operation of direct drive next terminal equipment after the motor reaches appointed rotational speed.

Description of the drawings:

fig. 1 is a schematic overall structure diagram for embodying an electric machine in the embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying a rotor assembly in an embodiment of the present application.

Description of reference numerals: 1. a housing; 2. a stator; 3. a rotor assembly; 31. a rotating shaft; 32. a rotor; 33. a magnetic ring base; 34. a magnetic ring; 4. a front end cover; 41. mounting a lug; 5. a rear end cap; 6. a circuit board; 7. a fan blade.

The specific implementation mode is as follows:

the present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses an automatic speed measuring motor for a fan, and referring to fig. 1 and 2, the automatic speed measuring motor comprises a motor body, wherein the motor body comprises a casing 1, a stator 2 is fixed on the inner wall of the casing 1, the middle part of the stator 2 is provided with a rotor 32 assembly 3 in a matching way, two ends of the casing 1 are respectively provided with a front end cover 4 and a rear end cover 5, the rotor 32 assembly 3 comprises a rotating shaft 31 and a rotor 32 fixed on the surface of the rotating shaft 31, a magnetic ring 34 mounting assembly is arranged on the rotating shaft 31 in a press-fitting way, the magnetic ring 34 mounting assembly comprises a magnetic ring base 33, the magnetic ring base 33 is an aluminum magnetic ring base 33, the magnetic ring base 33 is fixed on the rotating shaft 31, and a magnetic ring 34 is fixed on the magnetic ring base 33;

the front end cover 4 is fixed with a mounting lug 41 corresponding to the position of the mounting component of the magnetic ring 34, the mounting lug 41 is fixed with a circuit board 6, the circuit board 6 is provided with a Hall element, the Hall element is correspondingly arranged outside the circumference of the magnetic ring 34, and the circuit board 6 is integrated with a singlechip which is used for pulse counting and feeding back an output signal.

Referring to fig. 1, a fan blade 7 is installed on a rotating shaft 31, the fan blade 7 is arranged on one side of a front end cover 4, and the fan blade 7 rotates along with the rotating shaft 31, so that heat dissipation can be performed on a motor, and a circuit board 6 can be protected to a certain extent.

The implementation principle of the automatic speed measuring motor for the fan in the embodiment of the application is as follows:

a Hall switch detection method is adopted, namely, a magnetic ring 34 mounting component (an aluminum magnetic ring base 33 and a magnetic ring 34) is pressed on a rotating shaft 31, a circuit board mounting lug 41 is welded on a front end cover 4 of a motor, then a circuit board 6 (containing a Hall) is fixed on the lug by a screw, the Hall position needs to be outside the circumference of the magnetic ring 34, the Hall switch periodically senses magnetic lines when the motor rotates to generate pulse voltage, pulses are counted within a certain time, signals are fed back and output to directly convert the rotating speed of the motor, and the next terminal device can be rapidly and timely driven after the motor reaches the specified rotating speed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automatic tacho motor for fan, includes motor body, motor body includes casing (1), be fixed with stator (2) on casing (1) inner wall, stator (2) middle part matches and is provided with rotor (32) subassembly (3), casing (1) both ends are equipped with front end housing (4) and rear end cap (5), its characterized in that respectively: the rotor (32) assembly (3) comprises a rotating shaft (31) and a rotor (32) fixed on the surface of the rotating shaft (31), a magnetic ring (34) mounting assembly is pressed on the rotating shaft (31), the magnetic ring (34) mounting assembly comprises a magnetic ring base (33), the magnetic ring base (33) is fixed on the rotating shaft (31), and a magnetic ring (34) is fixed on the magnetic ring base (33);

and a mounting lug (41) is fixed on the front end cover (4) corresponding to the position of the magnetic ring (34) mounting component, a circuit board (6) is fixed on the mounting lug (41), and a Hall element is arranged on the circuit board (6).

2. The automatic speed measuring motor for the fan according to claim 1, characterized in that: the Hall element is correspondingly arranged outside the circumference of the magnetic ring (34).

3. The automatic speed measuring motor for the fan according to claim 1, characterized in that: and a singlechip is integrated on the circuit board (6) and used for pulse counting and feeding back an output signal.

4. The automatic speed measuring motor for the blower according to claim 1, wherein: the magnetic ring base (33) is an aluminum magnetic ring base (33).

5. The automatic speed measuring motor for the fan according to claim 1, characterized in that: the fan blade (7) is installed on the rotating shaft (31), and the fan blade (7) is arranged on one side of the front end cover (4).