CN110212703A - The rotation of new energy motor becomes novel assembly device - Google Patents

Abstract

The invention relates to a novel assembly device for a new energy motor resolver. The device mainly includes a resolver positioning sleeve, a resolver rotor shaft, a sealed bearing and a position sensor connection plate. The resolver stator is assembled on an inner surface of the positioning sleeve, and one end of the positioning sleeve is fixed on the motor controller; the resolver rotor Assembled on the rotor shaft, the resolver rotor shaft is assembled on the other inner surface of the positioning sleeve through a sealed bearing, and the resolver rotor shaft extends out of the other end of the positioning sleeve, and the position sensor connection plate passes through the coupling claw The disk and the elastic body of the coupling are connected as a whole; the connection disk of the position sensor is locked on the end cover connected with the motor rotor with bolts. The inner circular surface of the resolver stator assembly of the positioning sleeve and the other inner circular surface of the sealed bearing assembly are different stepped inner circular surfaces. On one part, the processing is completed in one clamping, which completely guarantees the assembly of the resolver stator and the rotor. The coaxiality makes the air gap of the resolver uniform, and the output signal is stable and reliable.

Description

New assembly device for new energy motor resolver

technical field

The invention relates to a structure in which a resolver is installed on a controller for an outer rotor motor of a new energy vehicle, in particular to a new type assembly device for a resolver of a new energy motor.

Background technique

The stator and rotor of the existing new energy vehicle motor resolver are generally assembled on the end cover and shaft of the motor, and are assembled on two parts respectively. Since the machining accuracy cannot be well guaranteed, the air gap between the stator and the rotor is uneven, and even Rubbing makes the signal transmission unstable or impossible to transmit.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a new new energy motor resolver stator rotor assembly device, the device is provided with a resolver positioning sleeve, the resolver rotor shaft is arranged in the resolver positioning sleeve and the two are coaxial Set, the resolver rotor is fixed on the resolver rotor shaft, the resolver stator is fixed in the resolver positioning sleeve, the resolver rotor shaft is connected to the end cover of the electronic rotor through the coupling and the position sensor connection plate, the resolver stator and the The positioning circular surface of the resolver rotor can be clamped on one part at one time and can ensure the coaxiality of the resolver stator and the resolver rotor.

The present invention realizes above-mentioned technical purpose through following technical scheme:

The new energy motor resolver stator and rotor assembly device provided by the present invention includes a resolver positioning sleeve, a resolver rotor shaft, a sealed bearing, and a position sensor connection plate. The resolver positioning sleeve is a cylindrical structure with two ends open. One end of the positioning sleeve is fixed on the controller, the resolver rotor shaft is assembled inside the resolver positioning sleeve through a sealed bearing and one end of the resolver rotor shaft extends out of the resolver positioning sleeve, and the resolver rotor shaft extends out of the resolver positioning sleeve One end is connected to the connection plate of the position sensor, and the other side of the connection plate of the position sensor is fixed on the end cover connected with the motor rotor; the resolver stator is assembled on the inner wall of the resolver positioning sleeve, and the resolver rotor is assembled on the resolver rotor shaft and The two are on the same positioning circular surface, the central axis of the resolver stator, the resolver rotor, the resolver positioning sleeve and the resolver rotor shaft coincide; the motor rotor drives the resolver rotor shaft to rotate through the position sensor connection plate, and then drives the resolver rotor Rotation of the resolver rotor on the shaft.

Among them, the inner wall of the resolver positioning sleeve is provided with a first stepped surface from left to right, and the resolver rotor shaft is provided with a fourth stepped surface and a sixth stepped surface from left to right in sequence, and the resolver rotor shaft is assembled on the resolver positioning When inside the sleeve, the first stepped surface and the fourth stepped surface are on the same positioning circular surface, and the resolver stator and the resolver rotor respectively abut against the first stepped surface and the fourth stepped surface to ensure that the resolver stator and rotor are on the same positioning circular surface Above: the resolver positioning sleeve is provided with a third step surface from right to left, the sealed bearing is stuck between the third step surface and the sixth step surface, and the end of the resolver rotor shaft close to the sixth step surface protrudes out of the resolver positioning set.

Preferably, a second stepped surface is provided on the inner wall of the resolver positioning sleeve from left to right, and the second stepped surface is located between the first stepped surface and the third stepped surface; the resolver rotor shaft is also provided with a The fifth stepped surface, the fifth stepped surface is arranged between the fourth stepped surface and the sixth stepped surface, and the second stepped surface and the fifth stepped surface are on the same positioning circular surface.

Preferably, the sealed bearing is a deep groove ball bearing and two are arranged side by side. A sealing ring is provided on the side of the deep groove ball bearing close to the connection plate of the position sensor. The sealing ring connects the outer wall of the resolver rotor shaft and the inner wall of the resolver positioning sleeve. seal between.

Wherein, one end of the resolver rotor shaft protruding from the resolver positioning sleeve is connected with the connection plate of the position sensor through a coupling.

Specifically, the resolver rotor shaft is provided with a coupling driven shaft, the position sensor connection plate is provided with a coupling driving shaft, and the coupling driven shaft and the coupling driving shaft are connected to each other through the coupling pawl. Together.

Wherein, a coupling elastic body is assembled on the shaft coupling claw disc.

The present invention has the following beneficial effects:

(1) The new energy motor resolver assembly device provided by the present invention has one end directly fixed on the end of the motor controller, and the other end fixed on the motor end cover connected to the motor rotor. The resolver stator, resolver rotor and The sealed bearing is clamped on one part to complete the processing, which fully guarantees the coaxiality of the resolver stator and the resolver rotor. The air gap between the resolver stator and rotor is uniform, the output signal is stable and reliable, and the whole vehicle runs smoothly.

(2) Through the setting of mutually matched step surfaces, the overall assembly structure of the resolver is simple, easy to assemble and disassemble, easy to maintain, safe, reliable, and has sufficient strength and service life;

(3) The connection method of the present invention has the function of buffering and damping when the motor is often started with a load and the working load changes, and can protect the resolver from being less or not damaged.

Description of drawings

Fig. 1 is the sectional structure schematic diagram after the present invention assembles;

Fig. 2 is a schematic cross-sectional structure diagram of the resolver positioning sleeve in Fig. 1;

Fig. 3 is a front structural schematic view of the resolver rotor shaft in Fig. 1;

Fig. 4 is a perspective view of another structure of the resolver rotor shaft;

Fig. 5 is a three-dimensional structural schematic diagram of the coupling claw disc;

FIG. 6 is a schematic diagram of a three-dimensional structure of a connection plate of a position sensor;

In the figure 1 resolver positioning sleeve, 2 resolver rotor, 3 resolver stator, 4 resolver rotor shaft, 5 deep groove ball bearing, 6 sealing ring, 7 coupling claw disc, 8 coupling elastic body, 9 position Sensor connecting plate, 11 first stepped surface, 12 second stepped surface, 13 third stepped surface, 14 flange, 41 fourth stepped surface, 42 fifth stepped surface, 43 sixth stepped surface.

Detailed ways

In order to make the structure and principle of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments:

As shown in Figure 1-3, a new type of conversion device for a new energy motor resolver, including a resolver positioning sleeve 1, a resolver rotor shaft 4, a sealed bearing and a position sensor connection plate 6, the resolver positioning sleeve 1 is two ends Open cylindrical structure, one end of the resolver positioning sleeve 1 is fixed on the controller, specifically, a flange 14 can be provided at the end of the resolver positioning sleeve 1, and the resolver positioning sleeve 1 is directly fixed by the flange 14 and bolts On the controller casing, the wires on the resolver stator and rotor pass directly through the controller casing to connect with the controller, and the end of the resolver rotor shaft 4 protruding from the resolver positioning sleeve 1 is connected to the position sensor connection plate 6, and the position sensor connection plate The other side of 6 is fixed on the motor end cover connected with the motor rotor by bolts; the resolver stator 3 is assembled on the inner wall of the resolver positioning sleeve 1, and the resolver rotor 2 is assembled on the resolver rotor shaft 4 and both are on the same On the positioning circle (that is, the two are set correspondingly), the central axes of the resolver stator 2, the resolver rotor 3, the resolver positioning sleeve 1 and the resolver rotor shaft 4 coincide; the motor rotor drives the resolver rotor through the position sensor connection plate 6 The rotation of the shaft 4 further drives the rotation of the resolver rotor on the resolver rotor shaft 4 .

In the present invention, the resolver stator 2 and the resolver rotor 3 are respectively fixed in the coaxial resolver rotor shaft 4 and the resolver positioning sleeve 1, and the resolver positioning sleeve is fixed on the controller, and the resolver rotor The shaft is directly driven to rotate through the position sensor connection plate 6 and the motor rotor, and the coaxial installation of the resolver stator, resolver rotor and sealed bearing is completed through an assembly mechanism. The coaxiality is more reliable, and the air gap between the resolver stator and rotor is even. The stability and reliability of signal transmission are guaranteed.

In this embodiment, a first stepped surface 11 is provided on the inner wall of the resolver positioning sleeve 1 from left to right, and a fourth stepped surface 41 and a sixth stepped surface 43 are provided on the resolver rotor shaft 4 in sequence from left to right. When the variable rotor shaft 4 is assembled in the resolver positioning sleeve 1, the first stepped surface 11 and the fourth stepped surface 41 are on the same positioning circular surface, and the resolver stator 3 and the resolver rotor 2 respectively abut against the first stepped surface 11 and the fourth stepped surface 41. The fourth stepped surface 41 ensures that the resolver stator and rotor are on the same positioning circular surface; the resolver positioning sleeve 1 is provided with a third stepped surface 13 from right to left, and the sealed bearing is stuck on the third stepped surface 13 and the sixth stepped surface 43, the end of the resolver rotor shaft 4 close to the sixth stepped surface 43 protrudes from the resolver positioning sleeve 1, and the structure of the resolver rotor shaft 4 can be seen in FIG. 4 . When assembling, first clamp the resolver stator 3 in the resolver positioning sleeve 1 and its right side against the first step surface 11, then fix this end of the resolver positioning sleeve 1 on the controller, and press it at the same time The sealing ring at this place, and then the sealed bearing is assembled in the resolver positioning sleeve 1 against the third step surface 13, and finally the resolver rotor shaft 4 assembled with the resolver rotor 2 is assembled into the resolver positioning sleeve 1, and then It can be connected to the end cover of the motor through the position sensor connection plate 6, and the motor rotor drives the resolver rotor 2 to rotate through the motor end cover, the position sensor connection plate 6 and the resolver rotor shaft 4, and the assembly is relatively quick.

Further, we can also set a second stepped surface 12 from left to right on the inner wall of the resolver positioning sleeve 1, the second stepped surface 12 is located between the first stepped surface 11 and the third stepped surface 13; the resolver rotor shaft 4 is provided with a fifth stepped surface 42 from left to right, the fifth stepped surface 42 is set between the fourth stepped surface 41 and the sixth stepped surface 43 (see Figure 3), the second stepped surface 12 and the fifth stepped surface 42 on the same positioning circle.

In this embodiment, the sealed bearing is a deep groove ball bearing 5 and two are arranged side by side. A sealing ring 6 is arranged on the side of the deep groove ball bearing 5 close to the connection plate 6 of the position sensor, and the sealing ring 6 will rotate the rotor shaft 4 The seal between the outer wall and the inner wall of the resolver positioning sleeve 1 ensures the tightness inside the resolver.

In this embodiment, one end of the resolver rotor shaft 4 protruding from the resolver positioning sleeve 1 is connected to the position sensor connection plate 6 through a coupling.

Specifically, the resolver rotor shaft 4 is provided with a coupling driven shaft, the position sensor connection plate 6 is provided with a coupling driving shaft, and the coupling driven shaft and the coupling driving shaft pass through the coupling pawl 7 connected together.

Specifically, we also assemble a coupling elastic body on the coupling claw plate 7, and the coupling elastic body can adopt a common structure, which makes the whole device more reliable.

The above descriptions are only preferred implementations of the present invention, and any improvements and equivalent replacements made within the spirit and principles of the present invention are included within the protection scope of the claims of the present invention.

Claims (7)

1. A new type of assembly device for a new energy motor resolver, which is characterized in that it includes a resolver positioning sleeve, a resolver rotor shaft, a sealed bearing, and a position sensor connection plate. The resolver positioning sleeve is a cylindrical structure with openings at both ends. One end of the positioning sleeve is fixed on the controller, the resolver rotor shaft is assembled inside the resolver positioning sleeve through a sealed bearing and one end of the resolver rotor shaft extends out of the resolver positioning sleeve, and the resolver rotor shaft extends out of the resolver positioning sleeve One end is connected to the connection plate of the position sensor, and the other side of the connection plate of the position sensor is fixed on the end cover connected with the motor rotor; the resolver stator is assembled on the inner wall of the resolver positioning sleeve, and the resolver rotor is assembled on the resolver rotor shaft and The two are on the same positioning circular surface, the central axis of the resolver stator, the resolver rotor, the resolver positioning sleeve and the resolver rotor shaft coincide; the motor rotor drives the resolver rotor shaft to rotate through the position sensor connection plate, and then drives the resolver rotor Rotation of the resolver rotor on the shaft. 2. The new type conversion device for new energy motor resolver according to claim 1, characterized in that, the inner wall of the resolver positioning sleeve is provided with a first stepped surface from left to right, and the resolver rotor shaft is sequentially arranged from left to right The fourth stepped surface and the sixth stepped surface are provided. When the resolver rotor shaft is assembled in the resolver positioning sleeve, the first stepped surface and the fourth stepped surface are on the same positioning circular surface, and the resolver stator and the resolver rotor respectively On the first step surface and the fourth step surface, ensure that the resolver stator and rotor are on the same positioning circle; inside the resolver positioning sleeve, there is a third step surface from right to left, and the sealed bearing is stuck between the third step surface and the sixth step surface. Between the stepped surfaces, the end of the resolver rotor shaft close to the sixth stepped surface protrudes from the resolver positioning sleeve. 3. The new assembly device for new energy motor resolver according to claim 2, characterized in that the inner wall of the resolver positioning sleeve is provided with a second stepped surface from left to right, and the second stepped surface is located between the first stepped surface and Between the third step surface; the resolver rotor shaft is also provided with a fifth step surface from left to right, the fifth step surface is set between the fourth step surface and the sixth step surface, the second step surface and the fifth step surface faces on the same positioning circle. 4. The new assembly device for new energy motor resolver according to claim 1, characterized in that the sealed bearing is a deep groove ball bearing and two are arranged side by side, and the deep groove ball bearing is arranged on a side close to the connection plate of the position sensor There is a sealing ring, and the sealing ring seals between the outer wall of the resolver rotor shaft and the inner wall of the resolver positioning sleeve. 5. The new-type assembly device for a new energy motor resolver according to claim 1, wherein one end of the resolver rotor shaft protruding from the resolver positioning sleeve is connected to the connection plate of the position sensor through a coupling. 6. The new assembly device for new energy motor resolver according to claim 3, characterized in that, the resolver rotor shaft is provided with a coupling driven shaft, and the position sensor connection plate is provided with a coupling drive shaft, and the coupling The driven shaft of the shaft coupling and the driving shaft of the shaft coupling are connected together through the coupling pawl. 7. The new assembly device for the new energy motor resolver according to claim 4, characterized in that the clutch claw is equipped with a coupling elastic body.