Lightweight motor rotating shaft

Abstract

The utility model relates to the technical field of motor rotating shafts, and discloses a lightweight motor rotating shaft which comprises a shaft body, a through cavity is formed in the shaft body, the cavity and the shaft body are located on the same axis, a stepped groove is formed in the left end of the shaft body, and a plurality of sliding supporting grooves arranged circumferentially are formed in the inner wall of the shaft body; a supporting assembly is arranged in the shaft body. According to the light-weight motor rotating shaft, through sliding connection of the arranged supporting assembly and the inner cavity of the shaft body and cooperation of the arranged plugging cover and installation of the bolt and the shaft body, the purpose of rapid disassembly and assembly of the supporting assembly can be achieved, production and assembly of the whole body are facilitated, and through the arranged supporting assembly, the purpose of stable supporting of the shaft body can be achieved; the anti-load performance of the shaft body is effectively improved, the safety of an automobile during running is improved, meanwhile, the rotating posture of the rotating shaft can be monitored through the arranged shaft eccentricity measuring sensor, and whether the rotating shaft deforms or not can be visually judged conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of motor shafts, and specifically to a lightweight motor shaft. Background Art

[0002] The motor shaft, usually referred to as the shaft or axis, is an important part of the motor used to support the rotating parts and transmit torque. It is one of the core components inside the motor and is usually connected to the rotor directly or through other transmission mechanisms.

[0003] The existing patent (publication number: CN211930422U) discloses a low-cost lightweight motor shaft, including a shaft body, the shaft body is a tubular structure with open ends, one end of which is interference-embedded with a tail end plug, and a first saddle threaded hole is provided on the mating surface of the shaft body and the tail end plug. The first saddle threaded hole is arranged along the axial direction of the shaft body, half of which is located on the shaft body, and the other half is located on the tail end plug. A first saddle fastener is threadedly connected in the second saddle threaded hole; a plug can also be provided at the other end of the shaft body.

[0004] However, when the motor drives the car tire, if the tire is subjected to a large lateral force, such as when turning at high speed or driving at high intensity on uneven roads, these forces will be converted into radial loads acting on the motor shaft. However, the interior of the above-mentioned shaft body is a completely hollow cavity, resulting in its weak load resistance, which can easily cause the shaft to deform or break, posing a safety hazard. Utility Model Content

[0005] In response to the shortcomings of the prior art, the present application provides a lightweight motor shaft having advantages such as resistance to radial loads. It solves the problem that when a motor drives a car tire, if the tire is subjected to a large lateral force, such as when turning at high speed or driving at high intensity on an uneven road, these forces will be converted into radial loads acting on the motor shaft. However, the interior of the above-mentioned shaft body is a completely hollow cavity, resulting in its weak load resistance, which can easily cause the shaft to deform or break, posing a safety hazard.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a lightweight motor shaft, comprising a shaft body, a through cavity is provided inside the shaft body, and the cavity and the shaft body are on the same axis, a stepped groove is provided at the left end of the shaft body, and a plurality of sliding support grooves arranged in a circumference are provided on the inner wall of the shaft body;

[0007] A support assembly is provided inside the shaft body;

[0008] The support assembly includes a central column, a plurality of connecting ribs and a plurality of contact support plates;

[0009] A blocking cover is slidably inserted into the stepped groove, and a shaft eccentricity measuring sensor is fixedly installed at the center of the blocking cover.

[0010] Through the above scheme, by the sliding connection between the support assembly and the internal cavity of the shaft body, the blocking cover is coordinated with the bolts and installed on the shaft body, so as to achieve the purpose of rapid disassembly and assembly of the support assembly, and facilitate the overall production and assembly. Through the support assembly, the purpose of stable support of the shaft body can be achieved, and the load resistance of the shaft body is effectively improved, and the safety of the car during driving is improved. At the same time, through the shaft eccentricity measurement sensor, the rotation posture of the shaft can be monitored, which is convenient for intuitively judging whether the shaft is deformed and whether the rotor inside the motor has any problems.

[0011] Furthermore, the support assembly is integrally cast.

[0012] According to the above scheme, by setting the support assembly as an integral casting, the overall strength can be improved, thereby improving the load resistance performance of the shaft body.

[0013] Furthermore, the inner side wall of the stepped groove is provided with a plurality of threaded holes arranged in a circle, and the left side of the blocking cover is provided with a plurality of countersunk holes arranged in a circle, each of the countersunk holes is on the same axis as the threaded hole adjacent to it, a bolt is inserted into the inside of each countersunk hole, and the right end of each bolt is threadedly connected to the threaded hole adjacent to it.

[0014] Through the above scheme, the purpose of fixing the blocking cover can be achieved by setting the bolts.

[0015] Furthermore, the plurality of connecting ribs and contact support plates are fixedly connected to the central column, and each of the contact support plates is slidably connected to the sliding support groove.

[0016] Through the above scheme and the setting of the support assembly, the purpose of supporting the shaft body can be achieved.

[0017] Furthermore, the central column and the shaft body are located on the same axis.

[0018] Through the above solution, the central column and the shaft body are located on the same axis, which can prevent the stability of the shaft body from being affected during the rotation of the shaft body.

[0019] Furthermore, each of the contact support plates is adapted to the sliding support groove adjacent thereto.

[0020] Through the above solution, by adapting the contact support plate and the sliding support groove, it is possible to avoid a large gap between the contact support plate and the sliding support groove, which would cause shaking during the rotation of the shaft.

[0021] Furthermore, the left end of the central column is in contact with the blocking cover.

[0022] Through the above solution, by setting the blocking cover, the horizontal movement of the central column can be limited, thereby improving the stability during fixation.

[0023] Furthermore, the outer surface of the shaft is galvanized.

[0024] According to the above scheme, the outer surface of the shaft body is galvanized, so that the shaft body can have good corrosion resistance.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0026] The lightweight motor shaft can achieve the purpose of rapid disassembly and assembly of the support component through the sliding connection between the support component and the internal cavity of the shaft body, and the sealing cover is installed with the bolts and the shaft body, which is convenient for the overall production and assembly. The support component can achieve the purpose of stable support of the shaft body, effectively improves the load resistance of the shaft body, and improves the safety of the car during driving. At the same time, the shaft eccentricity measurement sensor can monitor the rotation posture of the shaft, which is convenient for intuitively judging whether the shaft is deformed and whether the rotor inside the motor has any problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A cross-sectional view of the front view of the overall structure of this application;

[0028] Figure 2 This is the front view of the overall structure of this application;

[0029] Figure 3 This is a three-dimensional schematic diagram of the overall structure of this application without the blocking cover;

[0030] Figure 4 It is a cross-sectional view of the right side view of the overall structure of this application;

[0031] Figure 5 The structural diagram of the plugging cover for this application;

[0032] Figure 6 This is a structural diagram of the supporting components for this application.

[0033] In the figure:

[0034] 1. Shaft body; 2. Cavity; 3. Step groove; 4. Sliding support groove; 5. Support assembly; 501. Center column; 502. Connecting rib; 503. Contact support plate; 6. Threaded hole; 7. Countersunk hole; 8. Bolt; 9. Sealing cover; 10. Shaft eccentricity measurement sensor. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] See also Figure 2 , Figure 3 and Figure 4 A lightweight motor shaft in this embodiment includes a shaft body 1, a through cavity 2 is opened inside the shaft body 1, and the cavity 2 and the shaft body 1 are on the same axis, a stepped groove 3 is opened at the left end of the shaft body 1, and a plurality of sliding support grooves 4 arranged in a circumference are opened on the inner wall of the shaft body 1.

[0037] See also Figure 1 , Figure 2 and Figure 3 The outer surface of the shaft body 1 is galvanized. By galvanizing the outer surface of the shaft body 1, the shaft body 1 can have good corrosion resistance. A support component 5 is provided inside the shaft body 1. The support component 5 is cast as an integral part. By setting the support component 5 as an integral part, the overall strength can be improved, thereby improving the load resistance of the shaft body 1.

[0038] See also Figure 1 , Figure 2 and Figure 3 The support assembly 5 includes a central column 501, a plurality of connecting ribs 502 and a plurality of contact support plates 503. The plurality of connecting ribs 502 and the contact support plates 503 are fixedly connected to the central column 501. Each contact support plate 503 is slidably connected to the sliding support groove 4. By setting the support assembly 5, the purpose of supporting the shaft body 1 can be achieved.

[0039] See also Figure 2 , Figure 4 and Figure 5 A blocking cover 9 is slidably inserted into the inside of the step groove 3, and a shaft eccentricity measuring sensor 10 is fixedly installed at the center of the blocking cover 9. A plurality of threaded holes 6 arranged in a circle are provided on the inner wall of the step groove 3, and a plurality of countersunk holes 7 arranged in a circle are provided on the left side of the blocking cover 9. Each countersunk hole 7 is on the same axis as the threaded hole 6 adjacent to it, and a bolt 8 is inserted into the inside of each countersunk hole 7, and the right end of each bolt 8 is threadedly connected to the threaded hole 6 adjacent to it. By setting the bolt 8, the purpose of fixing the blocking cover 9 can be achieved.

[0040] See also Figure 2 , Figure 4 and Figure 6The center column 501 is on the same axis as the shaft body 1. By having the center column 501 and the shaft body 1 on the same axis, the stability of the shaft body 1 can be avoided from being affected during the rotation of the shaft body 1. Each contact support plate 503 is adapted to the sliding support groove 4 close to it. By adapting the contact support plate 503 to the sliding support groove 4, a large gap between the contact support plate 503 and the sliding support groove 4 can be avoided, which causes the shaft body 1 to shake during the rotation. The left end of the center column 501 is in contact with the blocking cover 9. By setting the blocking cover 9, the horizontal movement of the center column 501 can be limited to improve the stability during fixation.

[0041] A lightweight motor shaft in the present embodiment is connected to the internal cavity 2 of the shaft body 1 by sliding connection between the support assembly 5 and the blocking cover 9, which cooperates with the bolt 8 and the shaft body 1, so as to achieve the purpose of rapid disassembly and assembly of the support assembly 5, and facilitate the production and assembly of the whole. The support assembly 5 can stably support the shaft body 1, effectively improve the load resistance of the shaft body 1, and improve the safety of the car during driving. At the same time, the shaft eccentricity measurement sensor 10 can monitor the rotation posture of the shaft, so as to intuitively judge whether the shaft is deformed and whether the rotor inside the motor has any problems.

[0042] It should be noted that the right end sealing piece of the shaft body 1 is the tail end plug 2 in the comparative document.

[0043] The working principle of the above embodiment is: when in use, the support assembly 5 is plugged into the cavity 2, and then the contact support plate 503 is matched with the sliding support groove 4, and then the right end of the shaft body 1 is blocked by the external tail end plug, and then the blocking cover 9 is slidably plugged into the left end stepped groove 3, and finally the blocking cover 9 is fixed by the bolt 8 and the threaded hole 6, so that the blocking cover 9 contacts the left end of the support assembly 5, and the external tail end plug contacts the right end of the support assembly 5.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A lightweight motor shaft, comprising a shaft body (1), characterized in that: The shaft body (1) has a through cavity (2) formed inside, and the cavity (2) and the shaft body (1) are coaxially located, a stepped groove (3) is formed at the left end of the shaft body (1), and a plurality of circumferentially arranged sliding support grooves (4) are formed on the inner wall of the shaft body (1); A support assembly (5) is provided inside the shaft body (1); The support assembly (5) comprises a central column (501), a plurality of connecting ribs (502) and a plurality of contact support plates (503); A blocking cover (9) is slidably inserted into the interior of the stepped groove (3), and a shaft eccentricity measuring sensor (10) is fixedly mounted at the center of the blocking cover (9).

2. The lightweight motor shaft according to claim 1, characterized in that: The support assembly (5) is integrally cast.

3. The lightweight motor shaft according to claim 1, characterized in that: The inner side wall of the stepped groove (3) is provided with a plurality of threaded holes (6) arranged in a circumference, and the left side surface of the blocking cover (9) is provided with a plurality of countersunk holes (7) arranged in a circumference, each of the countersunk holes (7) is coaxial with the threaded hole (6) adjacent thereto, a bolt (8) is inserted into the interior of each of the countersunk holes (7), and the right end of each of the bolts (8) is threadedly connected to the threaded hole (6) adjacent thereto.

4. The lightweight motor shaft according to claim 1, characterized in that: The plurality of connecting ribs (502) and the contact support plates (503) are all fixedly connected to the central column (501), and each of the contact support plates (503) is slidably connected to the sliding support groove (4).

5. The lightweight motor shaft according to claim 1, characterized in that: The central column (501) and the shaft body (1) are located on the same axis.

6. The lightweight motor shaft according to claim 1, characterized in that: Each of the contact support plates (503) is adapted to the sliding support groove (4) adjacent thereto.

7. The lightweight motor shaft according to claim 1, characterized in that: The left end of the central column (501) is in contact with the blocking cover (9).

8. The lightweight motor shaft according to claim 1, characterized in that: The outer surface of the shaft body (1) is galvanized.

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