The invention content of the meter meter motor can be cleared
SUMMARY OF THE INVENTION It is an object of the present invention to provide a clearable meter meter for a motor that avoids the stress of the prior art shaft rotation process due to the inflexibility of the coupling which would cause the motor shaft or shaft to flex.
Plan view of the motor shaft of the motor of the present invention and the coupling structure of the rotating shaft of the two permanent magnet rotors under the separation condition
In order to overcome the deficiencies in the prior art, the present invention provides a solution for a cleanable meter meter for a motor, as follows: A clearable meter meter for a motor, including a permanent magnet Stepping motor, meter bracket, and counter component composed of a character wheel, a carry wheel, a reduction gear, and a motor shaft of the stepping motor is coupled with a rotating shaft that is sleeved with two permanent magnet rotors through a coupling structure, and Two sets of stators and coils respectively corresponding to the two permanent magnet rotors are arranged on the frame. When the two corresponding stators and rotors respectively work, the rotating directions of the rotors are opposite, respectively for counting and clearing; The projection poles of the two permanent magnet rotors intersect in a plane perpendicular to the motor axis and do not coincide, and the angle formed by the intersection is in the range of 10-180 degrees.
The motor shaft of the motor and the coupling structure of the rotating shaft of the two permanent magnet rotors are: the right head of the motor shaft A1 of the motor is a first flaring A10 which is gradually expanding from left to right. The left head of the rotating shaft A2 of the two permanent magnet rotors is a second diverging opening A20 which is gradually expanded from the right to the left, and the inner surface of the first flared opening A10 is provided with a snap Ring A3, the inner surface of the second flared opening A20 is provided with a snap groove A4 that is engaged with the snap ring A3.
The first sleeve A7 is circumferentially connected to the outer surface of the first flare A10, and the horizontal projection of the first sleeve A10 is an annular contour composed of two concentric circles, the two concentric circles being located inside a first inner circle and a first outer circle located outside, and the first inner circle is located in a region surrounded by the outer contour of the horizontal projection of the first flare A10; the second sleeve A8 is circumferentially connected to the first On the outer surface of the second divergent opening A20, the horizontal projection of the second sleeve A8 is an annular contour composed of two concentric circles, which are a second inner circle located inside and a second inner part The outer circle is formed, and the second inner circle is located in a region surrounded by the outer contour of the horizontal projection of the second flare A20; the first sleeve A7 and the second sleeve A8 are riveted by the rivet A9, surrounding a first copper alloy ring A5 is attached to the outer surface of the first flared opening A10, and a second copper alloy ring A6 is attached to the outer surface of the second flared opening A20. The snap ring is attached. A3 is a snap ring having an elliptical rubber ring A11, and the snap groove A4 is a snap groove having an elliptical rubber ring.
According to the stress generated by the rotation process of the shaft, the strength of the motor shaft or the rotating shaft is very large due to the strong connection, and the phenomenon of flexion and extension is prevented.
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