Two-section type new energy automobile motor shaft

Abstract

The utility model discloses a two-section type new energy automobile motor shaft which comprises a main shaft, the right end of the main shaft is fixedly connected with a first shaft body section, the right end of the first shaft body section is fixedly connected with a second shaft body section, the right end of the second shaft body section is fixedly connected with a shaft end, the right end of the shaft end is provided with a circular hole, and the right end of the shaft end is fixedly connected with a second shaft body section. First key grooves which are annularly arranged are formed in the outer surface of the main shaft. Through the arrangement of the main shaft, the connecting shaft, the mounting hole, the cross-shaped clamping groove, the cross-shaped limiting plate, the first key groove, the second key groove, the positioning key, the mounting screw hole and the fastening screw, clamping connection and cross-shaped positioning of the main shaft and the connecting shaft can be achieved through cooperation of the cross-shaped clamping groove, the cross-shaped limiting plate, the first key groove, the second key groove and the positioning key; and screw positioning of the main shaft and the connecting shaft is achieved through the mounting screw holes and the fastening screws, two-section type combination of the motor shaft is achieved, mutual disassembly and replacement operation of the connecting shaft and the main shaft are facilitated, and economical use of the motor shaft is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a two-section new energy vehicle motor shaft. Background Technology

[0002] A shaft is a cylindrical object that passes through the middle of a bearing, wheel, or gear, although some are square. A shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque, or bending moment. It is generally a metal rod, and each section can have different diameters. Parts that rotate in a machine are mounted on the shaft. Among them, a motor shaft is a component that is coaxially set inside the motor stator and fixedly installed on the motor stator, and is used to output the motor torque. Motor shafts are frequently used in new energy vehicle parts.

[0003] Currently, traditional new energy vehicle motor shafts are generally manufactured as a single piece. If local wear and damage occur, the entire motor shaft needs to be replaced, while the undamaged end of the motor shaft cannot be used, which easily leads to a waste of resources. To address this issue, we propose a two-section new energy vehicle motor shaft. Utility Model Content

[0004] The purpose of this invention is to provide a two-section motor shaft for new energy vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A two-section new energy vehicle motor shaft includes a main shaft. A first shaft segment is fixedly connected to the right end of the main shaft, and a second shaft segment is fixedly connected to the right end of the first shaft segment. A shaft end is fixedly connected to the right end of the second shaft segment. A circular hole is provided at the right end of the shaft end. A first keyway arranged in annular pattern is provided on the outer surface of the main shaft. A mounting hole is provided at the left end of the main shaft. A connecting shaft is engaged with the inner wall of the mounting hole. A set of internal gears is provided at the left end of the connecting shaft. A cross-shaped locking groove is provided on the inner side wall of the mounting hole. A cross-shaped limiting plate is engaged with the inner wall of the cross-shaped locking groove. The left end of the cross-shaped limiting plate is fixedly connected to the right end of the connecting shaft. Two second keyways are provided on the inner wall of the mounting hole. Two third keyways are provided on the outer surface of the connecting shaft. A positioning key is engaged with the inner wall of each third keyway. The outer surface of each positioning key is engaged with the inner wall of the second keyway.

[0007] In a further embodiment, the upper surface of the cross-shaped limiting plate is provided with mounting screw holes, and the inner walls of the two first keyways are provided with T-shaped holes. Each T-shaped hole is fitted with a fastening screw, and the output end of each fastening screw is threadedly connected to the inner wall of the mounting screw hole.

[0008] In a further embodiment, a damping pad is fixedly connected to the inner sidewall of the cross-shaped mounting groove, and the damping pad is made of rubber.

[0009] In a further embodiment, the outer surface of the connecting shaft is provided with two sets of finger grooves, and the inner wall of each finger groove is provided with a set of anti-slip textures.

[0010] In a further embodiment, a model mark is provided on the outer surface of the spindle, and the model mark is located in the middle of the spindle.

[0011] In a further embodiment, a limiting disk is fixedly connected to the outer surface of the spindle, and a set of limiting grooves are formed on the outer surface of the limiting disk.

[0012] In a further embodiment, the outer surface of the second shaft segment is provided with a set of external threads, and the upper surface of the second shaft segment is provided with a fourth keyway.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This device, through the configuration of a main shaft, connecting shaft, mounting holes, cross-shaped clamping slots, cross-shaped limiting plates, a first keyway, a second keyway, a positioning key, mounting screw holes, and fastening screws, enables the main shaft and connecting shaft to be clamped and positioned using the cooperation of the cross-shaped clamping slots, cross-shaped limiting plates, the first keyway, the second keyway, and the positioning key. The mounting screw holes and fastening screws are used to achieve screw positioning of the main shaft and connecting shaft, enabling a two-section assembly of the motor shaft. This facilitates the disassembly and replacement of the connecting shaft and the main shaft, promoting economical use of the motor shaft. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall three-dimensional structure of a two-section electric motor shaft in a new energy vehicle;

[0016] Figure 2 This is a top view of the main shaft in a two-section new energy vehicle motor shaft.

[0017] Figure 3 This is a side view of the main shaft in a two-section new energy vehicle motor shaft.

[0018] Figure 4 This is a sectional view of the top view of the main shaft in a two-section new energy vehicle motor shaft.

[0019] Figure 5 This is a sectional view of the main shaft side view of a two-section new energy vehicle motor shaft.

[0020] In the diagram: 1. Spindle; 101. First spindle section; 102. Second spindle section; 103. Fourth keyway; 104. External thread; 105. Shaft end; 106. Circular hole; 107. First keyway; 108. Mounting hole; 2. Model mark; 3. Limiting plate; 301. Limiting groove; 4. Connecting shaft; 401. Anti-slip texture; 402. Finger groove; 403. Internal gear; 5. Second keyway; 501. Positioning key; 502. Third keyway; 6. Cross-shaped clamping groove; 601. Cross-shaped limiting plate; 7. Mounting screw hole; 701. Fastening screw; 702. T-hole; 8. Damping pad. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5In this utility model, a two-section new energy vehicle motor shaft includes a main shaft 1. A first shaft section 101 is fixedly connected to the right end of the main shaft 1. A second shaft section 102 is fixedly connected to the right end of the first shaft section 101. A shaft end 105 is fixedly connected to the right end of the second shaft section 102. A circular hole 106 is provided at the right end of the shaft end 105. A first keyway 107 arranged in annular pattern is provided on the outer surface of the main shaft 1. A mounting hole 108 is provided at the left end of the main shaft 1. A connecting shaft 4 is engaged with the inner wall of the mounting hole 108. A set of internal gears 403 is provided at the left end of the connecting shaft 4. A cross-shaped locking groove 6 is provided on the inner side wall of the mounting hole 108. A cross-shaped limiting plate 601 is locked in the inner wall of the cross-shaped locking groove 6. The left end of the cross-shaped limiting plate 601 is fixedly connected to the right end of the connecting shaft 4. Two second keyways 5 are provided on the inner wall of the mounting hole 108. Two third keyways 502 are provided on the outer surface of the connecting shaft 4. A positioning key 501 is locked in the inner wall of each third keyway 502. The outer surface of each positioning key 501 is locked in the inner wall of the second keyway 5.

[0025] The upper surface of the cross-shaped limiting plate 601 is provided with mounting screw holes 7. The inner walls of the two first keyways 107 are provided with T-shaped holes 702. Each T-shaped hole 702 is fitted with a fastening screw 701. The output end of each fastening screw 701 is threaded to the inner wall of the mounting screw hole 7, which can screw the cross-shaped limiting plate 601 and the cross-shaped clamping groove 6, so as to facilitate the stable connection between the connecting shaft 4 and the main shaft 1. The inner side wall of the cross-shaped clamping groove 6 is fixedly connected with a damping pad 8. The damping pad 8 is made of rubber and can protect the cross-shaped limiting plate 601, so as to facilitate the safe clamping of the connecting shaft 4. The outer surface of the connecting shaft 4 is provided with two sets of finger grooves 402. Each finger groove 402 has a set of anti-slip textures 401 on its inner wall, which can make it easier for the installer to hold the connecting shaft 4 and facilitate the clamping operation of the connecting shaft 4.

[0026] The outer surface of the main spindle 1 is marked with a model number 2, which is located in the middle of the main spindle 1. This model number indicates the model of the motor shaft and is convenient for installers. A limiting plate 3 is fixedly connected to the outer surface of the main spindle 1. A set of limiting grooves 301 are provided on the outer surface of the limiting plate 3 to limit the main spindle 1 and facilitate the installation of the motor shaft. A set of external threads 104 are provided on the outer surface of the second shaft section 102. A fourth keyway 103 is provided on the upper surface of the second shaft section 102 to facilitate the installation and operation of the motor shaft.

[0027] The working principle of this utility model is as follows:

[0028] In use, first pick up the connecting shaft 4 and insert the positioning key 501 into the third keyway 502. Then, align the connecting shaft 4 and insert it into the mounting hole 108. At the same time, insert the positioning key 501 into the second keyway 5 and insert the cross limit plate 601 into the cross mounting slot 6 to complete the snap-fit ​​docking of the connecting shaft 4 and the main shaft 1. Then, insert the fastening screw 701 into the T-hole 702 and thread it into the mounting screw hole 7 to realize the segmented assembly of the motor shaft. Then, install this motor shaft for use in new energy vehicles.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A two-section motor shaft for new energy vehicles, characterized in that: The assembly includes a spindle (1), to which a first shaft section (101) is fixedly connected at its right end. A second shaft section (102) is fixedly connected at its right end. A shaft end (105) is fixedly connected at its right end. A circular hole (106) is provided at the right end of the shaft end (105). A first keyway (107) arranged in annular pattern is provided on the outer surface of the spindle (1). A mounting hole (108) is provided at the left end of the spindle (1). A connecting shaft (4) is fitted into the inner wall of the mounting hole (108). A connecting shaft (4) is provided at the left end of the connecting shaft (4). A set of internal gears (403) has a cross-shaped locking groove (6) on the inner wall of the mounting hole (108). A cross-shaped limiting plate (601) is engaged with the inner wall of the cross-shaped locking groove (6). The left end of the cross-shaped limiting plate (601) is fixedly connected to the right end of the connecting shaft (4). Two second keyways (5) are opened on the inner wall of the mounting hole (108). Two third keyways (502) are opened on the outer surface of the connecting shaft (4). A positioning key (501) is engaged with the inner wall of each third keyway (502). The outer surface of each positioning key (501) is engaged with the inner wall of the second keyway (5).

2. The two-section new energy vehicle motor shaft according to claim 1, characterized in that: The upper surface of the cross-shaped limiting plate (601) is provided with mounting screw holes (7), and the inner walls of the two first keyways (107) are provided with T-shaped holes (702). Each T-shaped hole (702) is fitted with a fastening screw (701) on its inner wall, and the output end of each fastening screw (701) is threaded to the inner wall of the mounting screw hole (7).

3. The two-section new energy vehicle motor shaft according to claim 1, characterized in that: The inner wall of the cross-shaped mounting groove (6) is fixedly connected to a damping pad (8), which is made of rubber.

4. The two-section new energy vehicle motor shaft according to claim 1, characterized in that: The outer surface of the connecting shaft (4) is provided with two sets of finger grooves (402), and the inner wall of each finger groove (402) is provided with a set of anti-slip textures (401).

5. A two-section new energy vehicle motor shaft according to claim 1, characterized in that: The outer surface of the spindle (1) is provided with a model mark (2), which is located in the middle of the spindle (1).

6. A two-section new energy vehicle motor shaft according to claim 1, characterized in that: The outer surface of the main shaft (1) is fixedly connected to a limiting disk (3), and a set of limiting grooves (301) are provided on the outer surface of the limiting disk (3).

7. A two-section new energy vehicle motor shaft according to claim 1, characterized in that: The outer surface of the second shaft section (102) is provided with a set of external threads (104), and the upper surface of the second shaft section (102) is provided with a fourth keyway (103).

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