Motor rotating shaft

Abstract

The utility model discloses a motor rotating shaft, which relates to the technical field of motor production and comprises a main shaft embedded in a motor shell, two ends of the main shaft extend outwards to form slip ring connecting shafts, and an output shaft is integrally formed at one end, far away from the main shaft, of each slip ring connecting shaft. Through cooperative arrangement of the containing groove, the limiting block, the arc-shaped reed, the main shaft and other structures, when the sliding ring is installed, the sliding ring is arranged at the outer end of the sliding ring connecting shaft in a sleeving mode, the sliding ring slides in the direction of the main shaft, and the sliding ring extrudes the limiting block to rotate towards the inner cavity of the containing groove till the sliding ring moves to the position, between the limiting block and the main shaft, of the sliding ring connecting shaft; at the moment, the limiting block loses the extrusion effect of the inner wall of the slip ring, the arc-shaped reed pushes the limiting block to reset under the elastic force effect and is matched with the end of the main shaft to clamp and fix the slip ring, and the problems that when the slip ring is installed on an existing motor rotating shaft, multiple fixing bolts need to be disassembled in sequence, time and labor are wasted, and the installation efficiency of the slip ring is seriously affected are solved as much as possible.

Description

Technical Field

[0001] This application relates to the technical field of motor production, and particularly to a motor shaft. Background Art

[0002] The motor shaft is a component part of the rotor in an electronic device. The motor shaft penetrates through the motor housing and is rotatably connected to the motor housing through bearings, enabling the motor shaft to output power.

[0003] The utility model patent with publication number CN212183289U proposed a solution: a new type of motor shaft with high stability, including a main shaft and a motor housing. Both ends of the main shaft are integrally connected with slip ring connecting shafts. A second screw hole is formed on the outer surface of the slip ring connecting shaft. A fixing bolt is connected to the inner side of the second screw hole through threads. A fixing groove is formed on the outer surface of the fixing bolt. A reed is embedded on the inner wall of the second screw hole, and the other end of the reed is engaged with the fixing groove. The other end of the slip ring connecting shaft is integrally connected with an output shaft. A first screw hole is formed on the outer surface of the other end of the output shaft. Through holes are provided at both ends of the first screw hole. A fixing rod is arranged inside the through holes. A fixing screw is connected to the inner side of the first screw hole through threads.

[0004] The above-mentioned motor shaft is provided with a second screw hole on the slip ring connecting shaft, and a fixing bolt is fixed inside the second screw hole. After the slip ring is sleeved on the slip ring connecting shaft, the slip ring can be limited by the fixing bolt. And through the engagement of the reed and the fixing groove, the fixing bolt can be prevented from loosening, thereby achieving the effect of having an auxiliary fixing structure and improving the stability of the slip ring. However, when the user installs the slip ring, it is necessary to sequentially disassemble a plurality of fixing bolts, which is time-consuming and laborious, seriously affecting the installation efficiency of the slip ring. Utility Model Content

[0005] The purpose of the present utility model is to solve or at least alleviate the problem that when installing a slip ring on an existing motor shaft, it is necessary to sequentially disassemble a plurality of fixing bolts, which is time-consuming and laborious, seriously affecting the installation efficiency of the slip ring.

[0006] To achieve the above purpose, the present utility model adopts the following technical solution:[[]]

[0007] A motor shaft includes a main shaft embedded in a motor housing. Both ends of the main shaft extend outward to form slip ring connecting shafts. An output shaft is integrally formed at one end of the slip ring connecting shaft far from the main shaft. A plurality of receiving grooves are symmetrically formed on the circumferential side of the slip ring connecting shaft. A limiting block with one end rotatably connected to the side wall of the receiving groove is arranged inside the cavity of the receiving groove. A guiding groove is formed on the inner wall of the receiving groove. An elastic reset structure is embedded inside the cavity of the guiding groove.

[0008] By adopting the above technical solutions, when it is necessary to install a slip ring on the slip ring connecting shaft, the slip ring can be first aligned with the output shaft and slid towards the slip ring connecting shaft, and the slip ring is sleeved on the slip ring connecting shaft. Then the user continues to slide the slip ring towards the main shaft direction, and the slip ring squeezes the limiting block to rotate into the inner cavity of the accommodating groove until the slip ring is moved to the slip ring connecting shaft between the limiting block and the main shaft. At this time, the limiting block loses the extrusion effect of the inner wall of the slip ring, and under the action of its own elastic force, the arc-shaped spring piece pushes the end of the limiting block close to the main shaft to rotate around the rotating shaft, and the end of the limiting block close to the main shaft is pushed out of the accommodating groove again. At this time, the limiting block and the end of the main shaft cooperate to clamp and fix the slip ring, which avoids as much as possible the problem that when installing a slip ring on the existing motor rotating shaft, it is necessary to disassemble multiple fixing bolts in sequence, which is time-consuming and laborious and seriously affects the installation efficiency of the slip ring.

[0009] Optionally, the main shaft, the slip ring connecting shaft and the output shaft are arranged in a stepped shape, and the diameters of the main shaft, the slip ring connecting shaft and the output shaft decrease gradually.

[0010] By adopting the above technical solutions, it is convenient for different parts of the motor rotating shaft to be connected to different positions of the motor housing, and at the same time, the limiting block can cooperate with the end of the main shaft to clamp and fix the slip ring.

[0011] Optionally, a plurality of card slots parallel to the length direction of the output shaft are provided on the circumferential side of one end of the output shaft away from the slip ring connecting shaft, and the plurality of card slots are equidistantly distributed around the circumferential side of the output shaft.

[0012] By adopting the above technical solutions, card slots are provided at the end of the output shaft for clamping and fixing with an external coupling, and relative rotation between the output shaft and the coupling is avoided as much as possible.

[0013] Optionally, a bearing is sleeved on the middle section of the output shaft, the inner ring of the bearing is fixedly connected to the output shaft, and the outer ring of the bearing is fixedly connected to the inner wall of the motor housing.

[0014] By adopting the above technical solutions, a bearing is provided to rotatably connect the output shaft to the motor housing and reduce the frictional resistance when the output shaft rotates.

[0015] Optionally, an annular oil storage cavity 5 is provided on a section of the output shaft located in the inner ring of the bearing, a through hole is provided on the inner ring of the bearing, and the oil storage cavity 5 is communicated with the gap between the outer ring and the inner ring of the bearing through the through hole.

[0016] By adopting the above technical solutions, when the output shaft rotates, a centrifugal force can be generated, so that the lubricating oil stored in the oil storage cavity 5 can be thrown into the gap between the outer ring and the inner ring of the bearing through the through hole under the action of the centrifugal force to lubricate the balls in the bearing.

[0017] Optionally, a rotating shaft rotatably connected to the limiting block penetrates through one end of the limiting block away from the main shaft, and both ends of the rotating shaft are fixedly connected to the side walls on both sides of the receiving groove.

[0018] By adopting the above technical solution, the rotating shaft is provided to fix the limiting block, and at the same time, the limiting block can freely rotate around the rotating shaft, which is convenient for the user to adjust the position of the limiting block.

[0019] Optionally, the elastic reset structure is an arc-shaped spring piece arranged in the inner cavity of the guiding groove. Both ends of the arc-shaped spring piece are rotatably connected with guiding rods, and the guiding rods are slidably connected with the inner wall of the guiding groove.

[0020] By adopting the above technical solution, the arc-shaped spring piece is provided to reset the limiting block pressed into the inner cavity of the receiving groove, and the guiding rod is provided to guide the arc-shaped spring piece.

[0021] Optionally, when the arc-shaped spring piece is in a compressed state, the end of the limiting block away from the rotating shaft is completely embedded in the inner cavity of the receiving groove.

[0022] By adopting the above technical solution, the user can completely embed the limiting block into the receiving groove by pressing, which is convenient for the user to install the slip ring.

[0023] In summary, the beneficial effects of the present application are as follows:

[0024] Through the cooperation of structures such as the receiving groove, the limiting block, the arc-shaped spring piece and the main shaft in the present application, when installing the slip ring, the slip ring is sleeved on the outer end of the slip ring connecting shaft, and the slip ring is slid towards the main shaft direction. The slip ring squeezes the limiting block to rotate into the inner cavity of the receiving groove until the slip ring is moved to the slip ring connecting shaft between the limiting block and the main shaft. At this time, the limiting block loses the extrusion effect of the inner wall of the slip ring, and the arc-shaped spring piece pushes the limiting block to reset under the action of elastic force, and cooperates with the end of the main shaft to clamp and fix the slip ring, which avoids the problem that when installing the slip ring on the existing motor rotating shaft, it is necessary to sequentially disassemble a plurality of fixing bolts, which is time-consuming and laborious and seriously affects the installation efficiency of the slip ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall sectional structure schematic diagram of the present application;

[0026] Figure 2 is the present application Figure 1 The partial detailed enlarged view at A in;

[0027] Figure 3 is the three-dimensional structure schematic diagram of the arc-shaped spring piece of the present application.

[0028] Description of reference numerals: 1, main shaft; 2, slip ring connecting shaft; 3, output shaft; 4, card slot; 5, oil storage cavity; 6, bearing; 7, through hole; 8, receiving groove; 9, limit block; 10, rotating shaft; 11, guiding groove; 12, arc-shaped spring piece; 13, guiding rod. Detailed implementation manners

[0029] The following further describes the present application in conjunction with Figures 1-3 the accompanying drawings.

[0030] Please refer to Figures 1-3 , a motor rotating shaft, including a main shaft 1 embedded in a motor housing, both ends of the main shaft 1 extend outwards to form a slip ring connecting shaft 2, and the slip ring connecting shaft 2 is rotatably connected to the motor housing, so that the main shaft 1.

[0031] One end of the slip ring connecting shaft 2 far from the main shaft 1 is integrally formed with an output shaft 3. When the main shaft 1 rotates under the action of magnetic field force, it drives the output shaft 3 to rotate synchronously, thereby driving an external device to rotate.

[0032] A plurality of receiving grooves 8 are symmetrically arranged on the circumferential side of the slip ring connecting shaft 2. A limit block 9 is arranged in the inner cavity of the receiving groove 8, and one end of the limit block 9 is rotatably connected to the side wall of the receiving groove 8. The distance between the limit block 9 and the main shaft 1 is equal to the width of the slip ring, and is used to cooperate with the end of the main shaft 1 to clamp and fix the slip ring.

[0033] A guiding groove 11 is formed on the inner wall of the receiving groove 8, and an elastic reset structure is embedded in the inner cavity of the guiding groove 11. When the elastic reset structure is not stressed, one end of the limit block 9 close to the main shaft 1 protrudes out of the receiving groove 8, and cooperates with the end of the main shaft 1 to clamp and fix the slip ring. When the limit block 9 is pressed, one end of the limit block 9 close to the main shaft 1 can be completely embedded in the receiving groove 8, which is convenient for the user to sleeved the slip ring on the slip ring connecting shaft 2 between the limit block 9 and the end of the main shaft 1.

[0034] Referring to Figure 1 , the main shaft 1, the slip ring connecting shaft 2 and the output shaft 3 are arranged in a stepped shape, and the diameters of the main shaft 1, the slip ring connecting shaft 2 and the output shaft 3 gradually decrease. It is convenient for different parts of the motor rotating shaft to be connected to different positions of the motor housing, and at the same time, the limit block 9 can cooperate with the end of the main shaft 1 to clamp and fix the slip ring.

[0035] Referring to Figure 1 , a plurality of card slots 4 parallel to the length direction of the output shaft 3 are arranged on the circumferential side of one end of the output shaft 3 far from the slip ring connecting shaft 2. The plurality of card slots 4 are equidistantly distributed around the circumferential side of the output shaft 3. The card slots 4 are arranged at the end of the output shaft 3 for clamping and fixing with an external coupling, and relative rotation between the output shaft 3 and the coupling is avoided as much as possible.

[0036] Referring to Figure 1, a bearing 6 is sleeved on the middle section of the output shaft 3. The inner ring of the bearing 6 is fixedly connected to the output shaft 3, and the outer ring of the bearing 6 is fixedly connected to the inner wall of the motor housing. The bearing 6 is provided to rotatably connect the output shaft 3 to the motor housing, reducing the frictional resistance when the output shaft 3 rotates.

[0037] Refer to Figure 1 , an annular oil storage cavity 5 is formed on a section of the output shaft 3 located in the inner ring of the bearing 6. A through hole 7 is formed on the inner ring of the bearing 6, and the oil storage cavity 5 is communicated with the gap between the outer ring and the inner ring of the bearing 6 through the through hole 7. When the output shaft 3 rotates, a centrifugal force can be generated, enabling the lubricating oil stored in the oil storage cavity 5 to be thrown into the gap between the outer ring and the inner ring of the bearing 6 under the action of the centrifugal force to lubricate the balls in the bearing 6.

[0038] Refer to Figure 2 , a rotating shaft 10 rotatably connected to the limiting block 9 penetrates through one end of the limiting block 9 away from the main shaft 1, and both ends of the rotating shaft 10 are fixedly connected to the side walls on both sides of the receiving groove 8. The rotating shaft 10 is provided to fix the limiting block 9 and at the same time enable the limiting block 9 to freely rotate around the rotating shaft 10, facilitating the user to adjust the position of the limiting block 9.

[0039] Refer to Figure 3 , the elastic reset structure is an arc-shaped spring piece 12 arranged in the inner cavity of the guide groove 11. Both ends of the arc-shaped spring piece 12 are rotatably connected with a guide rod 13, and the guide rod 13 is slidably connected to the inner wall of the guide groove 11. The arc-shaped spring piece 12 is provided to reset the limiting block 9 pressed into the inner cavity of the receiving groove 8, and the guide rod 13 is provided to guide the arc-shaped spring piece 12.

[0040] Refer to Figure 2 , when the arc-shaped spring piece 12 is in a compressed state, one end of the limiting block 9 away from the rotating shaft 10 is completely embedded in the inner cavity of the receiving groove 8. It enables the user to completely embed the limiting block 9 into the receiving groove 8 by pressing, facilitating the user to install the slip ring.

[0041] The implementation principle of this application is as follows: When it is necessary to install a slip ring on the slip ring connecting shaft 2, the slip ring can be first aligned with the output shaft 3 and the slip ring can be slid towards the slip ring connecting shaft 2. The slip ring is sleeved on the slip ring connecting shaft 2. Then the user continues to slide the slip ring towards the main shaft 1. The slip ring squeezes the limiting block 9 to rotate into the inner cavity of the receiving groove 8 until the slip ring is moved to the slip ring connecting shaft 2 between the limiting block 9 and the main shaft 1. At this time, the limiting block 9 loses the extrusion effect of the inner wall of the slip ring. Under the action of its own elastic force, the arc-shaped spring piece 12 pushes the end of the limiting block 9 close to the main shaft 1 to rotate around the rotating shaft 10, and the end of the limiting block 9 close to the main shaft 1 is pushed out of the receiving groove 8 again. At this time, the limiting block 9 and the end of the main shaft 1 cooperate to clamp and fix the slip ring, thus avoiding the problem that when installing a slip ring on the existing motor rotating shaft, it is necessary to disassemble multiple fixing bolts in sequence, which is time-consuming and laborious and seriously affects the installation efficiency of the slip ring.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A motor shaft, comprising a main shaft (1) embedded in a motor housing, wherein both ends of the main shaft (1) extend outwardly to form a slip ring connecting shaft (2), and an output shaft (3) is integrally formed at one end of the slip ring connecting shaft (2) away from the main shaft (1), characterized in that: A plurality of receiving grooves (8) are symmetrically provided on the circumferential side of the slip ring connecting shaft (2); a limit block (9) is provided in the inner cavity of the receiving groove (8) and one end of the limit block is rotatably connected to the side wall of the receiving groove (8); a guide groove (11) is provided on the inner wall of the receiving groove (8); and an elastic reset structure is embedded in the inner cavity of the guide groove (11).

2. The motor shaft according to claim 1, characterized in that: The main shaft (1), the slip ring connecting shaft (2) and the output shaft (3) are arranged in a stepped manner, and the diameters of the main shaft (1), the slip ring connecting shaft (2) and the output shaft (3) decrease step by step.

3. The motor shaft according to claim 1, characterized in that: A plurality of slots (4) parallel to the length direction of the output shaft (3) are provided on the circumference of one end of the output shaft (3) away from the slip ring connection shaft (2), and the plurality of slots (4) are evenly spaced around the circumference of the output shaft (3).

4. The motor shaft according to claim 1, characterized in that: A bearing (6) is sleeved on the middle section of the output shaft (3); an inner ring of the bearing (6) is fixedly connected to the output shaft (3); and an outer ring of the bearing (6) is fixedly connected to the inner wall of the motor housing.

5. The motor shaft according to claim 4, characterized in that: An annular oil storage chamber (5) is provided on a section of the output shaft (3) located in the inner ring of the bearing (6), a through hole (7) is provided on the inner ring of the bearing (6), and the oil storage chamber (5) is connected to the gap between the outer ring and the inner ring of the bearing (6) through the through hole (7).

6. The motor shaft according to claim 5, characterized in that: A rotating shaft (10) rotatably connected to the limit block (9) is provided at one end of the limit block (9) away from the main shaft (1), and both ends of the rotating shaft (10) are respectively fixedly connected to the side walls of the accommodating groove (8).

7. The motor shaft according to claim 1, characterized in that: The elastic reset structure is an arc-shaped spring leaf (12) arranged in the inner cavity of the guide groove (11), and both ends of the arc-shaped spring leaf (12) are rotatably connected to guide rods (13), and the guide rods (13) are slidably connected to the inner wall of the guide groove (11).

8. The motor shaft according to claim 7, characterized in that: When the arc-shaped spring leaf (12) is in a compressed state, the end of the limit block (9) away from the rotating shaft (10) is completely embedded in the inner cavity of the accommodating groove (8).

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