Axial telescopic motor shaft with compact structure

Abstract

The utility model relates to the technical field of motor accessories, in particular to an axially telescopic motor shaft with a compact structure, which comprises a stator and a rotor, a transverse assembly through hole for assembling the rotor is arranged in the stator, an annular internal adjusting groove is arranged on the inner side surface of the transverse assembly through hole, and an annular external adjusting groove is arranged on the outer side surface of the rotor. According to the axial telescopic motor shaft with the compact structure, the built-in adjusting lead screw is controlled through the annular adjusting motor to control the external adjusting sleeve to drive the rotor to stretch, retract and translate, the size and the weight of the whole motor driving section can be greatly reduced, and the motor shaft can be conveniently installed and used on a new energy automobile; by means of the multiple built-in adjusting lead screws, the assembling stability of the external adjusting sleeve can be guaranteed, and the structural firmness after adjustment can be enhanced; the whole device is simple in structure, convenient to control and high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of motor accessories, in particular to an axially telescopic motor shaft with a compact structure. Background Art

[0002] In order to support the autopilot system of new energy vehicles and provide the force for vehicle driving and steering, it is necessary for the motor shaft to be telescopically adjustable. In order to adjust the length of the existing motor shaft, it is necessary to install a transmission wheel at the front end of the traditional solid motor shaft to transmit the torque force externally. Such a structure not only increases the axial length and weight of the motor, but also is not conducive to the requirements of small volume and light weight for autopilot on new energy vehicles. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is that installing a transmission wheel at the front end of the solid motor shaft to transmit torque externally not only increases the axial length and weight of the motor, but also is not conducive to the requirements of small volume and light weight for autopilot on new energy vehicles.

[0004] An axially telescopic motor shaft with a compact structure, comprising a stator and a rotor. A horizontally arranged assembly through hole for assembling the rotor is opened inside the stator. An annular internal adjustment groove is opened on the inner side surface of the horizontally arranged assembly through hole. An annular external adjustment groove is opened on the outer side surface of the rotor. An external adjustment sleeve is movably sleeved inside the annular external adjustment groove. A plurality of built-in adjustment screw rods are installed on the inner side surface of the annular internal adjustment groove. A plurality of internal thread grooves matching with the built-in adjustment screw rods are opened on the outer side surface of the external adjustment sleeve. An annular adjustment motor for controlling the built-in adjustment screw rods is installed on the outer side surface of the stator.

[0005] An annular installation groove for installing the annular adjustment motor is opened on the outer arc surface of the stator. A circular assembly through hole communicating with the inside of the annular internal adjustment groove is opened on the inner side surface of the annular installation groove.

[0006] An end gear meshing with the annular adjustment motor is axially fixed at the end of the built-in adjustment screw rod located in the annular installation groove.

[0007] An annular adjustment gear meshing with the end gear is fixed on the inner drive surface of the annular adjustment motor.

[0008] Horizontal external assembly planes are symmetrically opened on the upper and lower surfaces at the outer end of the rotor and arranged horizontally.

[0009] A circular assembly blind hole matching with the circular assembly through hole is opened on the end surface of the annular internal adjustment groove far away from the annular installation groove.

[0010] The beneficial effects of the present utility model are as follows:

[0011] (1) For a compact axially telescopic motor shaft of the present utility model, the annular adjustment motor controls the built-in adjustment screw rod to control the external adjustment sleeve to drive the rotor to telescopically translate, which can greatly reduce the volume and weight of the entire motor drive section and facilitate installation and use on new energy vehicles;

[0012] (2) Through multiple built-in adjustment screw rods, not only can the assembly stability of the external adjustment sleeve be ensured, but also the structural firmness after adjustment can be enhanced;

[0013] (3) The entire device has a simple structure, convenient control, and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 is a schematic structural view of the present utility model.

[0016] Figure 2 is a schematic internal structural view of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will now be further described in detail in conjunction with the drawings. These drawings are all simplified schematic views, only illustrating the basic structure of the present utility model in a schematic manner, and therefore only showing the components related to the present utility model.

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] Figure 1 and Figure 2 As shown in, a compact axially telescopic motor shaft includes a stator 1 and a rotor 2. A horizontally arranged assembly through hole for assembling the rotor 2 is provided inside the stator 1. An annular internal adjustment groove 3 is provided on the inner side surface of the horizontally arranged assembly through hole. An annular external adjustment groove 4 is provided on the outer side surface of the rotor 2. An external adjustment sleeve 5 is movably sleeved inside the annular external adjustment groove 4. Two built-in adjustment screw rods 6 are installed on the inner side surface of the annular internal adjustment groove 3. A plurality of internal thread grooves 7 matching the built-in adjustment screw rods 6 are provided on the outer side surface of the external adjustment sleeve 5. An annular adjustment motor 8 for controlling the built-in adjustment screw rods 6 is installed on the outer side surface of the stator 1.

[0020] In order to cooperate with lateral assembly, a ring-shaped installation groove 9 for installing a ring-shaped adjustment motor 8 is provided on the outer arc surface of the stator 2, and a circular assembly through-hole communicating with the inside of the ring-shaped internal adjustment groove 3 is provided on the inner side surface of the ring-shaped installation groove 9.

[0021] The ring-shaped adjustment motor 8 is sleeved on the outer opening position of the ring-shaped installation groove 9 from the outside, and then the ring-shaped adjustment motor 8 is fixed inside the ring-shaped installation groove 9 by bolts on the outside.

[0022] In order to cooperate with lateral synchronous rotation, an end gear 10 meshing with the ring-shaped adjustment motor 8 is axially fixed at one end of the built-in adjustment lead screw 6 located in the ring-shaped installation groove 9.

[0023] In order to cooperate with internal meshing control, a ring-shaped adjustment gear 11 meshing with the end gear 10 is fixed on the inner drive surface of the ring-shaped adjustment motor 8.

[0024] The ring-shaped adjustment motor 8 drives the internal ring-shaped adjustment gear 11 to rotate. When the ring-shaped adjustment gear 11 rotates, it controls the synchronous rotation of the end gears 10 at all positions, thereby driving the built-in adjustment lead screw 6 axially fixed to the end gears 10 to rotate synchronously. The built-in adjustment lead screw 6 drives the internal thread groove 7 meshing with it to translate along the built-in adjustment lead screw 6, thereby controlling the translation adjustment of the external adjustment sleeve 5 along the horizontal assembly through-hole.

[0025] In order to cooperate with lateral assembly fixation and improve lateral stability, horizontal external assembly planes 12 are symmetrically provided on the upper and lower surfaces of the outer end of the rotor 2 in a horizontal arrangement.

[0026] In order to ensure assembly stability, a circular assembly blind hole matching the circular assembly through-hole is provided at the end surface of the ring-shaped internal adjustment groove 3 away from the ring-shaped installation groove 9.

[0027] One end of the built-in adjustment lead screw 6 is inserted into the circular assembly blind hole, and the other end passes through the circular assembly through-hole and is axially fixed to the end gear 10.

[0028] Enlightened by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A compact axially retractable motor shaft, comprising a stator (1) and a rotor (2), characterized in that: The stator (1) is provided with a transverse assembly through hole for assembling the rotor (2), the inner side surface of the transverse assembly through hole is provided with an annular internal adjustment groove (3), the outer side surface of the rotor (2) is provided with an annular external adjustment groove (4), the inner side of the annular external adjustment groove (4) is movably sleeved with an external adjustment sleeve (5), a plurality of internal adjustment screws (6) are mounted on the inner side surface of the annular internal adjustment groove (3), a plurality of internal thread grooves (7) matching the internal adjustment screw (6) are mounted on the outer side surface of the external adjustment sleeve (5), and an annular adjustment motor (8) for controlling the internal adjustment screw (6) is mounted on the outer side surface of the stator (1).

2. A compact axially retractable motor shaft according to claim 1, characterized in that: An annular mounting groove (9) for mounting an annular adjustable motor is provided on the outer arc surface of the stator (1), and a circular assembly through hole communicating with the inside of the annular internal adjustable groove (3) is provided on the inner side surface of the annular mounting groove (9).

3. A compact axially retractable motor shaft according to claim 2, characterized in that: The built-in adjusting screw rod (6) is axially fixed with an end gear (10) which is meshed with the annular adjusting motor (8) at the end of the annular mounting groove (9).

4. The compact axially retractable motor shaft according to claim 3 is characterized by: An annular adjustment gear (11) meshing with the end gear (10) is fixed on the inner driving surface of the annular adjustment motor (8).

5. The compact axially retractable motor shaft according to claim 1, characterized in that: Horizontally arranged external assembly planes (12) are symmetrically provided on the upper and lower surfaces of the outer end of the rotor (2).

6. The compact axially retractable motor shaft according to claim 1, characterized in that: The annular internal adjustment groove (3) is located away from the end surface of the annular mounting groove (9) and is provided with a circular assembly blind hole that matches the circular assembly through hole.

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