Integrated motor with speed reduction structure-rotary encoder structure

Abstract

The utility model relates to an integrated motor with a speed reduction structure and a rotary encoder structure. The integrated motor comprises a left shell and a right shell, wherein the left shell and the right shell are assembled to form a motor inner cavity; a rotating shaft piece I is rotatably mounted in the center of the left shell; the center of the right shell is provided with a cylindrical shell which is formed by sinking leftwards, and a rotary encoder assembly is installed in the cylindrical shell; a rotating shaft piece II is placed in an inner cavity of the motor and comprises a shaft part II and a barrel part II which are coaxially and integrally arranged; the barrel part II is sleeved outside the cylindrical shell in a clearance manner; the right end of the shaft part II extends into the cylindrical shell and is matched with the rotary encoder assembly; a motor magnet is sleeved outside the barrel part II, and a motor winding is wound on the inner side wall of the motor inner cavity; the left end of the shaft part II is connected with the rotating shaft piece I through a speed reducing assembly. The speed reducer has the advantages that the speed reducer is designed in an integrated mode, output and installation are fast and convenient, the speed reducer has the rotary weaving function and the speed reduction function, the axial length is short, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an integrated motor with a speed reduction structure-rotary encoder structure. Background Art

[0002] When a general motor is working, in order to control the speed and rotation position of the motor, a rotary encoder is usually designed on the end face of the motor. However, this design will increase the length of the motor in the axial direction, which does not meet some special application scenarios that require the motor to be short.

[0003] In addition, when a general motor is working, it needs to be decelerated by a reduction gearbox before output. The design of the reduction gearbox will occupy the installation space and does not meet the requirements of some scenarios with smaller installation holes.

[0004] Based on the customer's requirements for small installation space and short axial length, our company designed an integrated motor, which concentrates the functions of the reduction box and the rotary encoder inside the motor, and improves the structure to make the axial length short and the overall space occupied small. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide an integrated motor with a reduction structure-rotary encoder structure which has a short axial length and a small installation space.

[0006] The purpose of the utility model is achieved by the following technical solutions: an integrated motor with a reduction structure-rotary encoder structure, comprising a left housing and a right housing, which are assembled to form a motor cavity;

[0007] A rotating shaft member I is rotatably mounted at the center of the left housing; a column shell is formed at the center of the right housing and is concave to the left, and a rotary encoder assembly is mounted in the concave column cavity of the column shell;

[0008] A rotating shaft member II is placed in the inner cavity of the motor, and the rotating shaft member II includes a shaft portion II and a barrel portion II, and the shaft portion II penetrates the barrel portion II along the axis and the two are integrated;

[0009] The barrel part II is sleeved outside the column shell with a gap, the right end of the shaft part II extends into the concave cavity of the column shell and is installed in cooperation with the rotary encoder component to form a rotary encoder structure; the outer sleeve of the barrel part II is provided with a motor magnet, and the inner wall of the motor cavity is wound with a motor winding to form a motor structure; the left end of the shaft part II is connected to the rotating shaft part I through the speed reduction component to form a speed reduction structure;

[0010] When the motor winding is energized, it will drive barrel part II to rotate, and when barrel part II rotates, it will drive the rotary encoder component to work; when barrel part II rotates, it will also drive the shaft part I to rotate through the reduction component to perform reduction output.

[0011] As a preferred technical solution of the present application, the cylindrical surface at one end of the barrel part II cooperates with the inner wall of the motor cavity through a motor bearing, and a motor magnet is sleeved on the cylindrical surface at the other end of the barrel part II.

[0012] As a preferred technical solution of the present application, the deceleration assembly includes a driving wheel and a driven wheel; the rotating shaft member I includes a shaft portion I and a disc portion I, the disc portion I is coaxially fixed to the right end of the shaft portion I, and a plurality of driven wheels are mounted on the disc portion I; a driving wheel is mounted on the left end of the shaft portion I, and the driving wheel meshes with the driven wheels; an annular gear ring is provided on the wall of the inner cavity of the motor, and the annular gear ring also meshes with each driven wheel. When the barrel portion II rotates, it drives the shaft portion II to rotate, and the shaft portion II drives the driven wheel to rotate through the driving wheel, and at the same time the driven wheel meshes with the annular gear ring, so that the driven wheel generates planetary rotation with the shaft portion II as the axis, so that the disc portion I drives the shaft portion I to rotate, thereby achieving deceleration.

[0013] As a preferred technical solution of the present application, the rotary encoder assembly includes a rotary woven winding and a rotary woven magnet. The rotary woven magnet is sleeved on the shaft portion II, and the rotary woven winding is wound on the inner wall of the recessed column cavity of the column shell.

[0014] As a preferred technical solution of the present application, the left shell body is provided with a left end cover, on which the corresponding bearing and the rotating shaft member I are adapted and installed; the right shell body is provided with a right end cover, which closes the recessed column cavity of the column shell.

[0015] As a preferred technical solution of the present application, the left side surface of the right shell has an annular boss, and the left shell is buckled on the annular boss for installation and then fixed with screws.

[0016] The utility model has the following advantages:

[0017] Integrated design, quick and easy installation, small space occupation;

[0018] When the traditional motor is outputting, a reducer is additionally installed, and if the motor speed and rotation angle are to be measured, a rotary encoder needs to be additionally installed at the outer end of the motor; thus, when the entire motor is outputting, it will occupy a larger installation space and have a longer distance in the axial direction; and during installation, it is more cumbersome to additionally install a reducer and a rotary encoder;

[0019] In this solution, the reduction assembly and the rotary encoder assembly are concentrated in the motor, so there is no need to install a reduction box and a rotary encoder during installation, which is quick and convenient to install;

[0020] In addition, in this scheme, the structure of the rotating shaft component II is improved, so that the rotary encoder assembly is installed at the center of the motor that is recessed to the left, and the corresponding driving structure of the motor is sleeved on the outside of the rotary encoder assembly, which greatly reduces the axial distance of the motor; and the structure in which the rotating shaft component II drives the rotating shaft component I to rotate through the automatic wheel and the driven wheel will not cause the motor to be too long in the axial direction, and meet the application scenario requirements that require the motor to have a short axial length (the general way for the motor to achieve measurement and deceleration is to fix the rotary encoder on the end face of the output end of the motor, and the rotary encoder is sleeved on the corresponding output shaft, and the output shaft is then connected to the corresponding load through the reduction box, so the overall installation will occupy a larger installation space). BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0023] Figure 3 It is a schematic diagram of the structure of the utility model after sectioning;

[0024] Figure 4 It is a schematic diagram of the structure of the utility model after the cross-section and front view;

[0025] Figure 5 This is a schematic diagram of the structure of the utility model after the left end cover is removed;

[0026] Figure 6 This is a schematic diagram of the structure of the utility model without the left end cover and the rotating shaft member Ⅰ;

[0027] Figure 7 This is a schematic diagram of the structure of the utility model without the left end cover, the rotating shaft member I, and the left housing;

[0028] In the figure: 10-left housing, 11-left end cover;

[0029] 20-right housing, 21-column housing, 22-right end cover, 23-annular boss;

[0030] 30-rotating shaft part Ⅰ, 31-shaft part Ⅰ, 32-disc part Ⅰ;

[0031] 40-rotating shaft II, 41-shaft part II, 42-barrel part II;

[0032] 50-rotary encoder assembly, 60-reduction assembly, 61-driving wheel, 62-driven wheel, 63-gear ring, 70-motor bearing. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0034] It should be noted that the directions or positional relationships indicated by "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] See also Figure 1 to Figure 7 The integrated motor with a reduction structure-rotary encoder structure proposed in this embodiment includes a left housing 10 and a right housing 20 which are assembled to form a motor cavity, and also includes a rotating shaft component I 30, a rotating shaft component II 40, a rotary encoder assembly 50, and a reduction assembly 60;

[0037] The left housing 10 is cylindrical, with its left end face closed and its right end open; the right housing 20 is disc-shaped, with its left end face having an annular boss 23 near the edge; during installation, the right end of the left housing 10 is sleeved on the annular boss 23 of the right housing 20 and then tightened with screws;

[0038] A mounting hole is opened at the center of the left housing 10, which is closed by a left end cover 11. A rotating shaft member I is installed at the center of the left end cover 11 via a corresponding bearing; a column shell 21 is formed to be concave to the left at the center of the right housing 20, and a rotary encoder assembly 50 is installed in the concave column cavity of the column shell 21, and the concave column cavity is closed by a right end cover 22;

[0039] A rotating shaft member II40 is placed in the inner cavity of the motor. The rotating shaft member II40 includes a shaft portion II41 and a barrel portion II42. The shaft portion II41 penetrates the barrel portion II42 along the axis and the two are integrated. The barrel portion II42 is sleeved outside the column shell 21 at a distance, and a motor bearing 70 is sleeved on the outer cylindrical surface of the right part of the barrel portion II42. The motor bearing 70 is installed on the inner ring wall of the annular boss 23, forming a structure in which the barrel portion II42 can rotate.

[0040] A motor magnet is arranged on the outer cylindrical surface of the left part of the barrel part II 42, and a corresponding motor winding is arranged on the wall of the corresponding motor inner cavity, that is, the cylinder wall of the left housing 10. When the motor winding is energized, the motor magnet can drive the barrel part II 42 to rotate, forming a motor structure;

[0041] Among them, the right part of the shaft part II41 at the axis of the barrel part II42 is inserted into the concave column cavity of the column shell 21, and the right part is adapted to be installed with the rotary encoder component 50; specifically, the outer cylindrical surface of the right part of the shaft part II41 is provided with a rotary magnet, and the concave column cavity of the column shell 21 has a corresponding rotary winding. When the barrel part II42 drives the shaft part II41 to rotate, the rotary magnet will make the rotary winding generate a corresponding electrical signal, thereby measuring the rotation speed, rotation speed, and rotation angle of the barrel part II42 and the shaft part II41, that is, the rotating shaft part II40, to form a rotary encoder structure;

[0042] The left end of the shaft part II 41 at the axis of the barrel part II 42 is connected to the rotating shaft part I 30 via the speed reduction assembly 60 to form a speed reduction structure;

[0043] During operation, when the motor winding is energized, the barrel part II 42 drives the shaft part II 41 to rotate, and the shaft part II 41 drives the rotating shaft part I 30 through the reduction assembly 60, and the rotating shaft part I 30 can be connected to the corresponding load, so that the output of the motor after deceleration is realized; at the same time, when the shaft part II 41 rotates, it also drives the rotary magnet to rotate, which makes the rotary winding generate a corresponding signal, so that the speed and position of the rotating shaft part I 3 can be measured;

[0044] In the present scheme, since the rotary encoder assembly 50 is arranged in the cylindrical shell 21 recessed to the left, and the barrel portion Ⅱ42 of the rotating shaft member Ⅱ40 is sleeved outside the cylindrical shell 21, the barrel portion Ⅱ42 forms a motor-driven structure through the corresponding magnets, windings and the wall of the motor inner cavity; in this way, it is equivalent to the rotary encoder assembly 50 being located at the center of the entire motor, and the motor-driven structure is sleeved outside the rotary encoder assembly 50, which reduces the axial length of the entire motor (the traditional motor is equipped with a rotary encoder on the end face of the motor, and the two are not integrated, and the axial length is longer; the short axial length motor of the present scheme is suitable for some situations with special requirements for the axial length).

[0045] See also Figure 4~Figure 6 , the reduction assembly 60 is structurally designed, specifically including a driving wheel 61 and a driven wheel 62; wherein the rotating shaft member Ⅰ30 includes a shaft portion Ⅰ31 and a disc portion Ⅰ32, a disc portion Ⅰ32 having an integral body is fixed at the right end of the shaft portion Ⅰ32, and a plurality of driven gears 62 are mounted on the right end surface of the disc Ⅰ32 via a plurality of shafts; a driving wheel 61 is mounted on the left end of the shaft portion Ⅱ41, and the driving wheel 61 is meshed with a plurality of driven wheels 62; in addition, an annular gear ring 63 is provided at the edge of the hole of the mounting hole at the center of the left housing 10, and a plurality of driven wheels 62 are also meshed with the annular gear ring 63 at the same time;

[0046] During operation, when the rotating shaft member II40 rotates, it will drive the shaft portion II41 to rotate, and the shaft portion II41 will drive the multiple driven wheels 62 to rotate through the driving wheel 61. At the same time, the multiple driven wheels 62 are meshed with the annular gear ring 63, so that the multiple driven wheels 62 will perform planetary rotation around the shaft portion II41, thereby realizing the rotation of the disc portion I32, and the disc portion I32 drives the shaft portion I31 to rotate. The shaft portion I31 is connected to the corresponding load, thereby realizing the deceleration work;

[0047] In this solution, the reduction structure is arranged in the inner cavity of the motor and is an integrated design with the motor, so that the motor does not need a separate reduction box when outputting; and this structure will not cause the axial length of the motor to change slightly, and is suitable for special applications that have requirements for the motor length.

[0048] See also Figure 3~Figure 6 The rotary encoder assembly 50 is designed, specifically including a rotary woven winding and a rotary woven magnet. The rotary woven magnet is sleeved on the shaft portion II 41 , and the rotary woven winding is wound on the inner wall of the recessed column cavity of the column shell 21 .

[0049] In this embodiment, the left end cover 11 has a central tube, and the central tube is adapted to be installed with the shaft portion Ⅰ31 in the rotating shaft member Ⅰ30 via corresponding bearings.

[0050] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An integrated motor with a reduction structure-rotary encoder structure, characterized in that: It comprises a left housing (10) and a right housing (20) which are assembled to form a motor cavity; A rotating shaft member I (30) is rotatably mounted at the center of the left housing (10); a column shell (21) is formed at the center of the right housing (20) and is concave to the left, and a rotary encoder assembly (50) is mounted in the concave column cavity of the column shell (21); A rotating shaft member II (40) is placed in the inner cavity of the motor. The rotating shaft member II (40) includes a shaft portion II (41) and a barrel portion II (42). The shaft portion II (41) penetrates the barrel portion II (42) along the axis and the two are integrated. The barrel portion II (42) is sleeved on the outside of the column shell (21) with a gap, and the right end of the shaft portion II (41) extends into the recessed cavity of the column shell (21) and is installed in cooperation with the rotary encoder assembly (50) to form a rotary encoder structure; the outer sleeve of the barrel portion II (42) is provided with a motor magnet, and the inner side wall of the motor inner cavity is wound with a motor winding to form a motor structure; the left end of the shaft portion II (41) is connected to the rotating shaft member I (30) via the speed reduction assembly (60) to form a speed reduction structure; When the motor winding is energized, it drives the barrel part II (42) to rotate, and when the barrel part II (42) rotates, it drives the rotary encoder component (50) to work; when the barrel part II (42) rotates, it also drives the rotating shaft component I (30) to rotate through the reduction component (60) to perform a reduction output.

2. The integrated motor with a reduction structure-rotary encoder structure according to claim 1, characterized in that: The cylindrical surface at one end of the barrel part II (42) cooperates with the inner wall of the motor inner cavity via the motor bearing (70), and a motor magnet is sleeved on the cylindrical surface at the other end of the barrel part II (42).

3. The integrated motor with a reduction structure-rotary encoder structure according to claim 2, characterized in that: The deceleration assembly (60) comprises a driving wheel (61) and a driven wheel (62); The rotating shaft member I (30) comprises a shaft portion I (31) and a disc portion I (32), wherein the disc portion I (32) is coaxially fixed to the right end of the shaft portion I (31), and a plurality of driven wheels (62) are mounted on the disc portion I (32); a driving wheel (61) is mounted on the left end of the shaft portion I (31), and the driving wheel (61) meshes with the driven wheels (62); an annular gear ring (63) is provided on the wall of the inner cavity of the motor, and the annular gear ring (63) also meshes with each driven wheel (62); When the barrel portion II (42) rotates, it drives the shaft portion II (41) to rotate. The shaft portion II (41) drives the driven wheel (62) to rotate through the driving wheel (61). At the same time, the driven wheel (62) meshes with the annular gear ring (63), so that the driven wheel (62) generates planetary rotation with the shaft portion II (41) as the axis. Then, the disc portion I (32) drives the shaft portion I (31) to rotate, thereby achieving deceleration.

4. The integrated motor with a reduction structure-rotary encoder structure according to claim 2, characterized in that: The rotary encoder assembly (50) comprises a rotary woven winding and a rotary woven magnet. The rotary woven magnet is sleeved on the shaft portion II (41), and the rotary woven winding is wound on the inner wall of the concave column cavity of the column shell (21).

5. The integrated motor with a reduction structure-rotary encoder structure according to any one of claims 1 to 4, characterized in that: The left housing (10) is provided with a left end cover (11), on which the rotating shaft member I (30) is adapted and mounted via a corresponding bearing; the right housing (20) is provided with a right end cover (22), which seals the concave column cavity of the column housing (21).

6. The integrated motor with a reduction structure-rotary encoder structure according to claim 5, characterized in that: The left side surface of the right housing (20) is provided with an annular boss (23), and the left housing (10) is buckled on the annular boss (23) for installation and then fixed with screws.

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