An electric motor drive

Abstract

The embodiment of the present disclosure relates to a motor transmission device, which comprises a connecting sleeve fixedly connected with a rotating shaft of a motor, and a connecting port arranged at an end of the connecting sleeve away from the motor; a transmission sleeve fixedly arranged in the connecting sleeve, arranged on the outer periphery of an output shaft and coaxially arranged with the connecting sleeve; and an abutting assembly arranged in plurality and uniformly arranged in the circumferential direction of the transmission sleeve, the abutting assembly comprising an abutting block and a pushing piece, the abutting block being arranged through the side wall of the transmission sleeve and abutting with the output shaft, and the pushing piece being fixedly connected with the connecting sleeve and the abutting block. In the embodiment, the rotating shaft of the motor drives the connecting sleeve, the abutting block, the pushing piece and the output shaft to rotate, and the power is output. The power output mode is realized by the transmission of the abutting block, the abutting block is uniformly distributed on the output shaft, when the connecting sleeve rotates, the power is uniformly transmitted to the output shaft, the output shaft rotates more stably, the local stress of the output shaft is effectively prevented from being too large, the motor is more stable, and the output efficiency of the motor is improved.

Description

Technical Field

[0001] This disclosure relates to the field of transmission device technology, and more particularly to a motor transmission device. Background Technology

[0002] When an electric motor is in use, its transmission system is usually connected to the reducer or other devices directly through a key connection or interference fit. Although this connection method is convenient, the force on the shaft is uneven during rotation, which causes stress concentration or excessive stress in some parts of the shaft. Over time, this will make the transmission of the motor shaft unstable, thus shortening the life of the motor. Furthermore, the instability of its rotation will reduce the transmission efficiency of the motor.

[0003] Therefore, it is necessary to improve one or more of the problems existing in the above-mentioned related technical solutions.

[0004] It should be noted that this section is intended to provide background or context for the technical solutions disclosed herein. The description herein does not imply that it is prior art simply because it is included in this section. Summary of the Invention

[0005] The purpose of this disclosure is to provide a motor drive device that overcomes, at least to some extent, one or more problems caused by limitations and defects in related technologies.

[0006] This disclosure provides an embodiment of a motor drive device, including: A connecting sleeve is fixedly connected to the rotating shaft of the motor, and a connection port is provided at the end of the connecting sleeve away from the motor; A transmission sleeve is fixedly disposed inside the connecting sleeve, on the outer periphery of the output shaft, and coaxially disposed with the connecting sleeve. The abutting assembly includes multiple abutting assemblies evenly arranged in the circumferential direction of the transmission sleeve. Each abutting assembly includes an abutting block and a pushing member. The abutting block passes through the side wall of the transmission sleeve and abuts against the outer side wall of the output shaft on one side. One end of the pushing member is fixedly connected to the inner side wall of the connecting sleeve, and the other end is fixedly connected to the abutting block.

[0007] In one embodiment of this disclosure, the side wall of the transmission sleeve is provided with a through transmission hole, the abutment block is inserted into the transmission hole, the end of the transmission hole away from the output shaft is provided with an abutment notch in the axial direction, and the two sides of the abutment block are provided with abutment plates that cooperate with the abutment notch.

[0008] In one embodiment of this disclosure, the abutting assembly further includes a push cover plate, one end of the push member being fixedly connected to the inner sidewall of the connecting sleeve via the push cover plate; the sidewall of the connecting sleeve is provided with a through sidewall hole, and the push cover plate is disposed in the sidewall hole; a limiting ring is provided in the circumferential direction of the outer sidewall of the connecting sleeve, and the side of the push cover plate away from the push member abuts against the limiting ring.

[0009] In one embodiment of this disclosure, the limiting ring includes two symmetrically arranged half-hoops, each half-hoop having connecting ears at both ends, and the two half-hoops are connected to the connecting ears by a bolt assembly to form a limiting ring.

[0010] In one embodiment of this disclosure, the push cover includes multiple stacked discs, with protrusions on the side of the discs near the output shaft and grooves on the side of the discs away from the output shaft, and adjacent discs are stacked together by the cooperation of the grooves and the protrusions.

[0011] In one embodiment of this disclosure, the outer wall of the connecting sleeve is provided with a limiting ring groove, the side wall hole is provided at the bottom of the limiting ring groove, and the limiting ring is provided on the limiting ring groove.

[0012] In one embodiment of this disclosure, bearings are engaged at both ends of the inner wall of the transmission sleeve along its length, and an abutment ring is engaged on the inner wall of the bearing.

[0013] In one embodiment of this disclosure, a rubber pad is provided on the side wall of the abutment block near the axis.

[0014] In one embodiment of this disclosure, the actuating element is a spring.

[0015] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: In this embodiment of the motor transmission device, the rotation of the motor shaft drives the connecting sleeve to rotate, and then the rotation of the connecting sleeve drives the transmission sleeve to rotate. The pushing member of the abutment assembly is fixedly connected to the connecting sleeve, and the abutment block is fixedly connected to both the transmission sleeve and the output shaft. The rotation of the transmission sleeve drives the abutment block, the pushing member, and the output shaft to rotate, thereby outputting motor power. This power output is achieved through the transmission of the abutment block. Furthermore, because the abutment blocks are evenly distributed along the circumference of the output shaft, when the connecting sleeve rotates, the power can be evenly transmitted to the output shaft, making the output shaft more stable during rotation and the force on the output shaft more even. This effectively prevents excessive local stress on the motor output shaft, making the motor output more stable and thus improving the motor's output efficiency. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] Figure 1 This diagram shows a three-dimensional structural schematic of the motor drive device in an exemplary embodiment of the present disclosure; Figure 2 A partial cross-sectional schematic diagram of the motor drive device in an exemplary embodiment of the present disclosure is shown; Figure 3 In the exemplary embodiments shown in this disclosure Figure 2 A partially enlarged structural diagram; Figure 4 In the exemplary embodiments shown in this disclosure Figure 2 A cross-sectional view along the AA direction; Figure 5 In the exemplary embodiments shown in this disclosure Figure 4 A partially enlarged structural diagram.

[0018] Figure label: 1. Connecting sleeve; 11. Connecting port; 12. Side wall hole; 13. Limiting ring groove; 2. Transmission sleeve; 21. Transmission hole; 211. Abutting notch; 22. Bearing; 23. Abutting ring; 3. Abutting assembly; 31. Abutting block; 311. Abutting plate; 32. Pushing component; 33. Pushing cover plate; 331. Disc; 332. Protrusion; 333. Groove; 4. Output shaft; 5. Limiting ring; 51. Half hoop; 52. Connecting ear; 6. Motor; 61. Rotating shaft. Detailed Implementation

[0019] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0020] Furthermore, the accompanying drawings are merely illustrative diagrams of embodiments of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0021] This example embodiment provides a motor drive device; please refer to [reference needed]. Figure 1 , Figure 2 and Figure 3 It may include: connecting sleeve 1, transmission sleeve 2 and abutment component 3.

[0022] Specifically, the connecting sleeve 1 is fixedly connected to the rotating shaft 61 of the motor 6, and a connection port 11 is provided at the end of the connecting sleeve 1 away from the motor 6. The transmission sleeve 2 is fixedly disposed inside the connecting sleeve 1, on the outer periphery of the output shaft 4, and coaxially disposed with the connecting sleeve 1.

[0023] Multiple abutment components 3 (e.g., 4, 6, or 8) are evenly arranged in the circumferential direction of the transmission sleeve 2. Each abutment component 3 includes an abutment block 31 and a pushing member 32. The abutment block 31 passes through the side wall of the transmission sleeve 2, and one side abuts against the outer side wall of the output shaft 4. The pushing member 32 can be a spring or other elastic part with a telescopic function, which can abut against the output shaft 4.

[0024] One end of the pusher 32 is fixedly connected to the inner wall of the connecting sleeve 1, and the other end is fixedly connected to the abutment block 31.

[0025] In this embodiment, the rotation of the shaft 61 of the motor 6 drives the connecting sleeve 1 to rotate, and then the rotation of the connecting sleeve 1 drives the transmission sleeve 2 to rotate. The pushing member 32 of the abutment component 3 is fixedly connected to the connecting sleeve 1, and the abutment block 31 is fixedly connected to both the transmission sleeve 2 and the output shaft 4. The rotation of the transmission sleeve 2 drives the abutment block 31, the pushing member 32, and the output shaft 4 to rotate, thereby outputting power from the motor 6. This power output is achieved through the transmission of the abutment block 31. Furthermore, since the abutment blocks 31 are evenly distributed along the circumference of the output shaft 4, when the connecting sleeve 1 rotates, the power can be evenly transmitted to the output shaft 4, making the rotation of the output shaft 4 more stable and the force on the output shaft 4 more even. This effectively prevents equipment damage caused by excessive local stress on the output shaft 4 of the motor 6, making the output of the motor 6 more stable and thus improving the output efficiency of the motor 6.

[0026] Optionally, in some embodiments, please refer to Figure 3The transmission sleeve 2 has a through transmission hole 21 on its side wall. The abutment block 31 passes through the transmission hole 21. An abutment notch 211 is provided axially at the end of the transmission hole 21 away from the output shaft 4. Abutment plates 311 that mate with the abutment notch 211 are provided on both sides of the abutment block 31. The abutment block 31 may be arc-shaped. Optionally, in some embodiments, a rubber pad is provided on the side wall of the abutment block 31 near the axis. The rubber pad abuts against the outer wall of the output shaft 4, allowing the abutment block 31 to better abut against the outer wall of the output shaft 4, while also providing cushioning and shock absorption.

[0027] Optionally, in some embodiments, please refer to Figure 3 , Figure 4 and Figure 5 The abutting component 3 further includes a push cover plate 33, one end of the push member 32 is fixedly connected to the inner side wall of the connecting sleeve 1 through the push cover plate 33; the side wall of the connecting sleeve 1 is provided with a through side wall hole 12, and the push cover plate 33 is disposed in the side wall hole 12; a limit ring 5 is provided in the circumferential direction of the outer side wall of the connecting sleeve 1, and the side of the push cover plate 33 away from the push member 32 is provided to abut against the limit ring 5.

[0028] Optionally, in some embodiments, the limiting ring 5 includes two symmetrically arranged semi-hoops 51, with connecting ears 52 at both ends of each semi-hoop 51. The two semi-hoops 51 are connected to the connecting ears 52 by a bolt assembly 521 to form the limiting ring 5. The limiting ring 5 is assembled and disassembled using the bolt assembly, facilitating maintenance of the motor transmission device and installation of the output shaft 4. Specifically, when internal maintenance of the transmission device is required, the semi-hoops 51 can be separated, and then the push cover plate 33, push spring, and abutment block 31 can be removed in sequence. The abutment block 31 can be replaced to prevent wear of the abutment block 31 after prolonged use, which would reduce the power transmission force. This design facilitates maintenance.

[0029] Optionally, in some embodiments, please refer to Figure 4 and Figure 5 The push cover 33 includes multiple stacked discs 331. Each disc 331 has a protrusion 332 on its side near the output shaft 4 and a groove 333 on its side away from the output shaft 4. Adjacent discs 331 are stacked together through the engagement of the groove 333 and the protrusion 332. The engagement of the protrusion 332 and the groove 333 makes the push cover formed by the discs 331 more stable and facilitates the replacement of the number of discs 331.

[0030] In this embodiment, in order to adjust the contact force of the abutment block 31 on the output shaft 4, the thickness of the push cover 33 can be changed by increasing or decreasing the number of discs 331, thereby changing the contact force of the push member 32 on the abutment block 31, and thus changing the output force of the high-efficiency motor transmission device. Moreover, by changing the number of discs 331, the magnitude of the force of the abutment block 31 can be changed. Thus, when the output shaft is overloaded, the output shaft will directly generate sliding friction with the abutment block 31, causing the power between the output shaft 4 and the transmission sleeve 2 to be cut off, thereby effectively protecting the motor from burnout due to overload and playing a protective role for the motor.

[0031] Optionally, in some embodiments, the outer wall of the connecting sleeve 1 is provided with a limiting ring groove 13, the side wall hole 12 is provided at the bottom of the limiting ring groove 13, and the limiting ring 5 is provided on the limiting ring groove 13. By providing the limiting ring groove 13, the limiting ring 5 can be engaged in the limiting ring groove 13, preventing the limiting ring 5 from disengaging from the outer wall of the connecting sleeve 1.

[0032] Optionally, in some embodiments, bearings 22 are fitted at both ends of the inner wall of the transmission sleeve 2 along its length, and abutment rings 23 are fitted onto the inner walls of the bearings 22, with the abutment rings 23 abutting against the circumference of the output shaft 4. The bearings 22 and abutment rings 23 provide greater support for the output shaft 4, making its rotation more stable.

[0033] In summary, this application has the following advantages: (1) The abutting blocks 31 are distributed and abut against the circumferential direction of the output shaft 4, so that when the connecting sleeve 1 rotates, the power can be well transmitted to the output shaft 4, making the output shaft 4 more stable when rotating, making the force on the output shaft 4 of the motor 6 more uniform, effectively preventing the local stress of the output shaft 4 of the motor 6 from being too large, making the transmission of the motor 6 more stable, thereby improving the output efficiency of the motor 6. (2) By increasing or decreasing the number of discs 331, the thickness of the push cover 33 is changed, thereby changing the abutting force of the push member 32 on the abutting block 31, and thus changing the output force of the motor drive device to adapt to different load devices. (3) By changing the number of discs 331, the force of the abutment block 31 can be changed. When the overload of the output shaft 4 is too large, the output shaft 4 will directly generate relative sliding friction between the abutment block 31, so that the power between the output shaft 4 and the transmission sleeve 2 is cut off, thereby effectively protecting the motor 6 from burning out due to overload and playing a protective role for the motor 6.

[0034] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., in the above description indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the embodiments of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0037] In embodiments of this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0039] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A motor drive device, characterized in that, include: Connecting sleeve (1), the connecting sleeve (1) is fixedly connected to the rotating shaft (61) of the motor (6), and the end of the connecting sleeve (1) away from the motor is provided with a connecting port (11). Transmission sleeve (2), the transmission sleeve (2) is fixedly installed inside the connecting sleeve (1), on the outer periphery of the output shaft (4) and coaxially with the connecting sleeve (1); Abutting component (3) is provided in multiple and evenly arranged in the circumferential direction of the transmission sleeve (2). The abutting component (3) includes an abutting block (31) and a pushing member (32). The abutting block (31) passes through the side wall of the transmission sleeve (2) and abuts against the outer side wall of the output shaft (4) on one side. One end of the pushing member (32) is fixedly connected to the inner side wall of the connecting sleeve (1), and the other end is fixedly connected to the abutting block (31). The transmission sleeve (2) has a through transmission hole (21) on its side wall. The abutment block (31) passes through the transmission hole (21). The end of the transmission hole (21) away from the output shaft (4) has an abutment notch (211) in the axial direction. The two sides of the abutment block (31) are provided with abutment plates (311) that cooperate with the abutment notch (211). The abutting component (3) further includes a push cover plate (33), one end of the push member (32) is fixedly connected to the inner side wall of the connecting sleeve (1) through the push cover plate (33); the side wall of the connecting sleeve (1) is provided with a through side wall hole (12), and the push cover plate (33) is disposed in the side wall hole (12); a limit ring (5) is provided in the circumferential direction of the outer side wall of the connecting sleeve (1), and the side of the push cover plate (33) away from the push member (32) abuts against the limit ring (5); the push member (32) is a spring; The push cover (33) includes multiple stacked discs (331). The side of the disc (331) near the output shaft (4) is provided with a protrusion (332), and the side of the disc (331) away from the output shaft (4) is provided with a groove (333). Adjacent discs (331) are stacked together by the cooperation of the groove (333) and the protrusion (332).

2. The motor drive device according to claim 1, characterized in that, The limiting ring (5) includes two symmetrically arranged half-hoops (51), and the two ends of the half-hoops (51) are provided with connecting ears (52). The two half-hoops (51) are connected to the connecting ears (52) by a bolt assembly to form the limiting ring (5).

3. The motor drive device according to claim 2, characterized in that, The outer wall of the connecting sleeve (1) is provided with a limiting ring groove (13), the side wall hole (12) is provided at the bottom of the limiting ring groove (13), and the limiting ring (5) is provided on the limiting ring groove (13).

4. The motor drive device according to claim 3, characterized in that, Bearings (22) are fitted at both ends of the inner wall of the transmission sleeve (2) along the length direction, and an abutment ring (23) is fitted into the inner wall of the bearing (22).

5. The motor drive device according to any one of claims 1-4, characterized in that, A rubber pad is provided on the side wall of the abutment block (31) near the axis.

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