CN214221761U

CN214221761U - Rotor shaft

Info

Publication number: CN214221761U
Application number: CN202023346252.XU
Authority: CN
Inventors: 饶海生
Original assignee: Ningbo Hengyuan Shaft Industry Co ltd
Current assignee: Ningbo Hengyuan Shaft Industry Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-17
Anticipated expiration: 2030-12-31

Abstract

The application relates to a rotor shaft, it includes the axis body, and the one end of axis body is provided with the annular knurl section, and the one end that the axis body was kept away from to the annular knurl section is provided with the installation section, and the installation section includes screw thread portion. This application has threaded connection and can not be because of the rotor shaft high-speed rotation not hard up effect on the part on the rotor shaft.

Description

Rotor shaft

Technical Field

The application relates to the field of motor parts, in particular to a rotor shaft.

Background

The shaft is a cylindrical object penetrating through the middle of a bearing or the middle of a wheel or the middle of a gear, is a mechanical part for supporting a rotating part and rotating together with the rotating part to transfer motion, torque or bending moment, is generally in a metal round rod shape, and each section can have different diameters or the same diameter, and has difference according to the difference of parts sleeved on the shaft and the difference of working requirements. The rotor shaft is a shaft in the motor, and the rotor is installed on the rotor shaft to rotate along with the rotation of the rotor shaft, and the rotation of the rotor generates a magnetic field to realize the power generation of the motor.

In the related art, the rotor shaft is usually connected with other parts by using threads to realize fixation between the rotor shaft and the other parts.

In view of the above-described related art, the inventors have considered that when the rotor shaft rotates at a high speed, other parts screwed to the rotor shaft may loosen to affect the stability of the motor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that parts screwed on a rotor shaft are likely to loosen when the rotor shaft rotates at a high speed, the application provides the rotor shaft.

The application provides a rotor shaft adopts following technical scheme:

the utility model provides a rotor shaft, includes the axis body, the one end of axis body is provided with the annular knurl section, the one end that the axis body was kept away from to the annular knurl section is provided with the installation section, the installation section includes screw thread portion.

Through adopting above-mentioned technical scheme, the setting of screw portion makes other parts can install on the rotor shaft through threaded connection, realizes other parts fixed on the rotor shaft. The setting of annular knurl section has improved the frictional force that the axis body is here, has reduced the part of installing on the rotor shaft and has rotated the not hard up possibility of and not hard up relative rotor shaft in the high-speed rotatory in-process of rotor shaft to it is not hard up the possibility that arouses the motor because of other parts are not hard up on the rotor shaft to have reduced. Meanwhile, the arrangement of the knurled sections increases the integral aesthetic feeling of the rotor shaft.

Optionally, the installation section further comprises a tool withdrawal part, one end of the tool withdrawal part is connected to the knurled section, and one end, far away from the knurled section, of the tool withdrawal part is connected to the threaded portion.

Through adopting above-mentioned technical scheme, the setting of retreating the portion of cutting tool is convenient for the retreat sword in the rotor shaft course of working, and the diameter of retreating the portion of cutting tool and screw thread portion forms the difference in height simultaneously, makes the rotor shaft closely cooperate with adjacent part when the assembly, and the axis body of being convenient for assembles with other parts.

Optionally, a chamfer is arranged at one end of the threaded part far away from the knurled section.

By adopting the technical scheme, the chamfer has a guiding function, so that other parts can be conveniently installed on the threaded part, and the threaded part can fix other parts. The chamfer effectively removes the burr that remains on the rotor shaft surface after the processing, makes installer when the process of installation part, reduces the possibility that causes the injury to the hand. Meanwhile, in the transportation process of the rotor shaft, the condition that the rotor shaft is scratched by a sharp angle on the rotor shaft is avoided.

Optionally, the taper of the knurled section towards the tool withdrawal part is 1: 3.

Through adopting above-mentioned technical scheme, this tapering setting has the guide effect, is convenient for install epaxial part of rotor and the laminating of annular knurl section, increases the area of contact between annular knurl section and the part to increase the part at the epaxial frictional force of rotor, in order to reduce the high-speed pivoted in-process threaded connection of rotor shaft and the epaxial part of rotor and become flexible the possibility.

Optionally, a clamping groove is circumferentially formed in the shaft body.

Through adopting above-mentioned technical scheme, the setting of draw-in groove is used for the installation of rotor, and axial is spacing when making the rotor install on the axis body, avoids the rotor to remove on the rotor shaft and arouses the motor unstability.

Optionally, the ratio of the distance from the side wall of the clamping groove far away from the knurled section to the end face of the knurled section connected to the shaft body to the length of the whole shaft body is 1: 8.

Through adopting above-mentioned technical scheme, when the injecing of draw-in groove position on the axis body made the rotor to install on the axis body, still guaranteed the holistic structural strength of axis body, avoided the rotor to take place the unable stress bearing of axis body and cracked condition after installing on the axis body.

Optionally, an installation groove is formed in the circumferential direction of one end, far away from the knurled section, of the shaft body.

Through adopting above-mentioned technical scheme, the one end that the annular knurl section was kept away from to the axis body of being convenient for that sets up of mounting groove is connected with other parts, and there is the diameter difference between the diameter of the axis body of seting up the mounting groove simultaneously and the diameter for seting up the axis body of mounting groove, makes the part of installing in the mounting groove support tightly to the lateral wall of mounting groove on, realizes the part fixed in the mounting groove.

Optionally, the shaft body is provided with a mounting groove portion, and the ratio of the diameter of the mounting groove portion to the diameter of the shaft body is 4: 5.

Through adopting above-mentioned technical scheme, the diameter of the axis body of seting up the mounting groove has certain proportion with the diameter of the axis body of not seting up the mounting groove, when setting up through the proportion and making other parts can fix on the axis body, has still guaranteed the holistic structural strength of axis body, has reduced to set up on the axis body behind the mounting groove structural strength decline and lead to the easy-to-break possibility of axis body.

Optionally, the shaft body, the knurled section and the mounting section are all provided with electroplated layers.

Through adopting above-mentioned technical scheme, the setting up of plating layer makes axis body, knurl section and installation section all have resistant erosion performance, reduces because of axis body, knurl section and installation section are corroded and cause the unable possibility that uses of rotor shaft. Meanwhile, the arrangement of the electroplated layer improves the decorative performance of the shaft body, the knurled section and the mounting section, and the size of the metal part can be repaired, so that the rotor shaft is more adaptive to other parts and is connected with the other parts.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the threaded part is convenient for other parts to be arranged on the rotor shaft, the arrangement of the knurled sections improves the friction force between the rotor shaft and the parts, and the possibility of loosening of the parts arranged on the rotor shaft when the rotor shaft rotates at high speed is reduced;

2. the knurling section has certain tapering, makes the part of installing on the rotor shaft change in the knurling section laminating, increases area of contact between the two to increase the frictional force between knurling section and the part.

Drawings

FIG. 1 is a schematic structural view of a rotor shaft according to an embodiment of the present application;

fig. 2 is an enlarged view of a portion a in fig. 1.

Description of reference numerals: 1. a shaft body; 2. a knurling section; 3. an installation section; 31. a threaded portion; 32. a tool withdrawal part; 4. chamfering; 5. a card slot; 6. and (4) mounting the groove.

Detailed Description

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

The embodiment of the application discloses a rotor shaft. Referring to fig. 1, the rotor shaft includes a shaft body 1, and the shaft body 1 has a cylindrical shape. Mounting groove 6 has been seted up to the one end tip circumference of axis body 1, and the setting of mounting groove 6 is convenient for other part installations on the axis body 1. The shaft body 1 of seting up mounting groove 6 and the junction of the shaft body 1 of not seting up mounting groove 6 have the difference in height, form one and support tight face, make the part butt of installation in mounting groove 6 on supporting tight face, realize that the part of installing on mounting groove 6 is fixed on the rotor shaft. The ratio of the diameter of the shaft body 1 provided with the mounting groove 6 to the diameter of the shaft body 1 not provided with the mounting groove 6 is 4:5, the ratio enables parts mounted on the mounting groove 6 to be fixed on the shaft body 1, meanwhile, the structural strength requirement of the shaft body 1 is met, and the shaft body 1 cannot be easily broken due to the fact that the mounting groove 6 is formed in the shaft body 1.

Referring to fig. 2, keep away from the one end tip welding of seting up mounting groove 6 on the axis body 1 and have annular knurl section 2, the shape of annular knurl section 2 is the round platform, and annular knurl section 2 is the same with the terminal surface size of axis body 1 with the coaxial setting of axis body 1 and the big terminal surface of area on the annular knurl section 2. The surface of annular knurl section 2 is provided with the annular knurl, and annular knurl section 2's setting has increased the frictional force of installing between epaxial part of rotor and the rotor shaft, makes the rotor shaft install the epaxial part of rotor difficult not hard up when high-speed the rotation. The taper of the knurling section 2 is 1:3, the part mounted on the rotor shaft is more easily attached to the knurled section 2, and the contact surface between the rotor shaft and the part is increased, so that the friction force between the rotor shaft and the part is increased. Keep away from the one end welding of axis body 1 on the annular knurl section 2 and have an erection section 3, erection section 3 is including moving back sword portion 32 and screw thread portion 31, and the one end that moves back sword portion 32 welds the terminal surface that the area is little on annular knurl section 2, and the one end of keeping away from annular knurl section 2 on moving back sword portion 32 welds on screw thread portion 31, and the shape of moving back sword portion 32 and screw thread portion 31 is the cylinder and moves back sword portion 32, screw thread portion 31 and the equal coaxial setting of axis body 1. The cross section shape size of the tool retracting part 32 is smaller than the cross section of the end face with small area on the knurled section 2, and the tool retracting part 32 is convenient for tool retracting in the rotor shaft machining process. The cross section shape size of screw portion 31 is the same with the terminal surface size that the area is little on the knurl section 2, and the setting of screw portion 31 is convenient for the part to install on the rotor shaft through threaded connection, realizes fixing on the rotor shaft. The end part of the thread part 31 far away from the cutter withdrawing part 32 is provided with a chamfer 4, and the chamfer 4 has a guiding function and is convenient for other parts to be arranged on the rotor shaft. Simultaneously, the setting of chamfer 4 is effectual to be removed the burr of production rotor shaft in-process this department, makes the staff can not stabbed by the burr when the installation rotor shaft. The chamfer 4 also prevents the rotor shaft from scratching the adjacent rotor shaft by a sharp angle in the transportation process, thereby ensuring the quality of the rotor shaft.

Referring to fig. 1 and 2, a clamping groove 5 is circumferentially formed in the outer surface of one end, close to the knurled section 2, of the shaft body 1, the ratio of the distance from the side wall, far away from the knurled section 2, of the clamping groove 5 to the end face, connected with the knurled section 2, of the shaft body 1 to the length of the whole shaft body 1 is 1:8, the clamping groove 5 is used for mounting a rotor on a rotor shaft, the side wall of the clamping groove 5 axially limits the rotor, the rotor cannot move on the rotor shaft, and therefore the unstable situation of the motor caused by the fact that the rotor moves on the rotor shaft is reduced. When setting up through the proportion and making the rotor fix on the axis body 1, still satisfied the holistic structural strength requirement of axis body 1, make axis body 1 can not lead to axis body 1 easy-break because of having seted up draw-in groove 5. White zinc layers are electroplated on the surfaces of the shaft body 1, the knurled section 2 and the mounting section 3, so that the overall corrosion resistance of the rotor shaft is improved. Meanwhile, the white zinc layer enables the surface of the rotor shaft to be smooth, and the rotor shaft can be connected with other parts conveniently.

The implementation principle of the rotor shaft in the embodiment of the application is as follows: other parts are connected to the rotor shaft through the thread part 31 in a threaded mode, the parts are attached to the knurled sections 2, friction force of the parts on the rotor shaft is increased, and the situation that the parts are loosened on the rotor shaft when the rotor shaft rotates at a high speed is avoided. When the rotor is installed on the shaft body 1, the rotor is axially limited through the clamping groove 5, so that the rotor rotates along with the rotation of the rotor shaft, and the rotor rotates to generate a magnetic field for power generation.

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: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A rotor shaft, characterized by: including axis body (1), the one end of axis body (1) is provided with annular knurl section (2), the one end that axis body (1) was kept away from in annular knurl section (2) is provided with installation section (3), installation section (3) are including screw thread portion (31).

2. The rotor shaft of claim 1, wherein: installation section (3) still include moves back sword portion (32), the one end that moves back sword portion (32) is connected in knurl section (2), move back sword portion (32) and keep away from the one end of knurl section (2) and connect in screw thread portion (31).

3. The rotor shaft of claim 1, wherein: and a chamfer (4) is arranged at the end part of one end of the thread part (31) far away from the knurled section (2).

4. The rotor shaft of claim 2, wherein: the taper of the knurled section (2) towards the cutter withdrawing part (32) is 1: 3.

5. The rotor shaft of claim 1, wherein: a clamping groove (5) is formed in the upper circumferential direction of the shaft body (1).

6. The rotor shaft of claim 5, wherein: the ratio of the distance from the side wall of the clamping groove (5) far away from the knurled section (2) to the end face of the knurled section (2) connected to the shaft body (1) to the length of the whole shaft body (1) is 1: 8.

7. The rotor shaft of claim 1, wherein: and an installation groove (6) is formed in the circumferential direction of one end, far away from the knurled section (2), of the shaft body (1).

8. The rotor shaft of claim 7, wherein: the diameter of the part, provided with the mounting groove (6), of the shaft body (1) is 4:5 in proportion to the diameter of the shaft body (1).

9. The rotor shaft of claim 1, wherein: and electroplated layers are arranged on the shaft body (1), the knurled section (2) and the mounting section (3).