CN213661383U

CN213661383U - Mounting structure and motor of in-wheel motor encoder

Info

Publication number: CN213661383U
Application number: CN202022544335.3U
Authority: CN
Inventors: 杨勇
Original assignee: Shenzhen 3irobotix Co Ltd
Current assignee: Shenzhen 3irobotix Co Ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-07-09
Anticipated expiration: 2030-11-06
Also published as: WO2022095938A1

Abstract

The utility model discloses an installation structure of an in-wheel motor encoder and a motor, the installation structure of the in-wheel motor encoder comprises a driving wheel shaft, an encoder body and a clamping part, wherein a mounting groove is formed at one axial end of the driving wheel shaft, and a first stop surface arranged towards the notch of the mounting groove is formed in the mounting groove; the encoder body is arranged in the mounting groove and is provided with a first abutting surface which forms abutting fit with the first stopping surface; the clamping part at least partially extends into the mounting groove and abuts against one side, back to the first abutting surface, of the encoder body; the driving wheel shaft is provided with an installation part, the clamping part is provided with a matching part matched with the installation part, and the installation part is matched with the matching part and used for fixedly installing the clamping part on the driving wheel shaft. The utility model discloses a mounting structure of in-wheel motor encoder, it is more convenient to install and dismantle, and simple structure, and is with low costs.

Description

Mounting structure and motor of in-wheel motor encoder

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to in-wheel motor encoder's mounting structure and motor.

Background

The encoder is arranged on a driving wheel shaft and used for detecting the rotation of the driving wheel and recording the number of rotating circles of the driving wheel, the encoder can be used for calculating the walking mileage of the intelligent mower, and the encoder is usually in a fixed mounting mode of screw connection or viscose connection in the following two modes.

However, parts (screws and connecting sleeves) are added in the process of screw connection, the cost is increased, the connecting sleeves can increase the axial thickness, the hub motor is thicker, and in the radial direction, due to the fact that screw positioning holes need to be made, the encoder needs to extend outwards, the radial size is increased, and therefore a supporting bearing with a larger size needs to be selected, and the hub motor is large in size and high in cost; the assembly process is more, and the assembly and repair work time is long; the adhesive connection is that the encoder PCB is adhered to the steel sheet or the wire bag by using glue, the curing of the glue needs a certain time, the working time and the cost are high, the PCB is adhered to the steel sheet or the wire bag, the flatness and the position precision of the PCB are low, the maintenance and the replacement are troublesome, and the reliability of the glue and the stability of the process are inconsistent.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a mounting structure and motor of in-wheel motor encoder aims at solving traditional encoder's mounting means complicacy, problem with high costs.

In order to achieve the above object, the utility model provides a mounting structure of in-wheel motor encoder, include:

the driving wheel shaft is provided with an installation groove along one axial end, and a first stop surface facing a notch of the installation groove is formed in the installation groove;

the encoder body is arranged in the mounting groove and is provided with a first abutting surface which forms abutting fit with the first stopping surface; and the number of the first and second groups,

the clamping component at least partially extends into the mounting groove and abuts against one side, back to the first abutting surface, of the encoder body;

the driving wheel shaft is provided with a mounting part, the clamping part is provided with a matching part matched with the mounting part, and the mounting part is matched with the matching part and used for fixedly mounting the clamping part on the driving wheel shaft.

In one embodiment, a first stopping protrusion is convexly arranged on the inner side wall of the mounting groove, and faces the surface of the notch of the mounting groove to form the first stopping surface;

the encoder body includes an encoder PCB board facing away from a surface of a notch of the mounting groove to form the first abutting surface.

In one embodiment, one of the mounting portion and the mating portion is configured as a hook, and the other is configured as a buckle portion that mates with the hook.

In one embodiment, a first groove is formed on the inner side wall of the mounting groove to form the buckling part;

the clamping component comprises a clamping body which is annularly arranged, the clamping body is sleeved on the inner side of the mounting groove, a first convex part is convexly arranged on the outer ring wall of the clamping body, and the first convex part and the first groove are arranged in a matched mode to form the clamping hook;

the joint body with encoder body looks butt.

In one embodiment, a second groove is formed on the outer side wall of the mounting groove to form the buckling part;

the clamping component comprises a clamping body which is annularly arranged, the clamping body is sleeved on the outer side of the mounting groove, a second convex part is convexly arranged on the inner annular wall of the clamping body, and the second convex part and the second groove are arranged in a matched mode to form the clamping hook;

an abutting part is formed on the inner ring wall of the clamping body and abuts against one side, back to the first abutting surface, of the encoder body.

In an embodiment, the abutting portion includes a first abutting arm protruding from an inner annular wall of the clamping body, and a second abutting arm extending from the first abutting arm toward the encoder body, and one end of the second abutting arm away from the first abutting arm abuts against the encoder body.

In an embodiment, the clamping component includes an elastic clamping member disposed at a notch of the mounting groove, and the elastic clamping member abuts against a side of the encoder body, which faces away from the first abutting surface.

In an embodiment, the elastic clamping piece may be one of a metal elastic piece, a hole circlip, a plastic buckle, or a hole wire circlip.

The utility model also provides a motor, include:

the mounting structure of the hub motor encoder is arranged;

the two bearings are arranged at intervals along the axial direction of the driving wheel shaft, and one of the bearings is arranged corresponding to the mounting groove;

the shell component is connected with the two bearings and covers one end, provided with the mounting groove, of the driving wheel shaft, and a limiting part is arranged on the shell component; and the number of the first and second groups,

the magnet is arranged on the shell component and corresponds to the encoder body, and the magnet is provided with a limiting matching part matched with the limiting part.

In one embodiment, one of the limiting part and the limiting matching part is provided as a limiting groove, and the other is provided as a limiting protrusion matched with the limiting groove.

The utility model provides an among the technical scheme, through being provided with the mounting groove on the drive wheel shaft to with the encoder body restrict in the mounting groove, and pass through first backstop face butt in the mounting groove will describe one side of encoder body, through joint part butt in the opposite side of encoder body, thereby be fixed in the restriction of encoder body in the mounting groove, for the mounting means of traditional encoder, the utility model discloses an in-wheel motor encoder's mounting structure, it is more convenient to install and dismantle, and simple structure, and is with low costs.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first embodiment of an electric machine according to the present invention;

FIG. 2 is an exploded view of the motor of FIG. 1;

FIG. 3 is a schematic structural diagram of a mounting structure of the hub motor encoder of FIG. 1;

FIG. 4 is an enlarged schematic view of detail A in FIG. 3;

fig. 5 is a schematic structural diagram of a second embodiment of an electric machine according to the present invention;

FIG. 6 is an exploded view of the motor of FIG. 5;

FIG. 7 is a schematic structural diagram of a mounting structure of the hub motor encoder of FIG. 5;

fig. 8 is an enlarged schematic view of detail B in fig. 7.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Electric machine	211	First abutting surface
100	Bearing assembly	22	Mounting part
				200	Shell assembly	221	The first groove
210	Limiting part	222	Second groove
				210a	Limiting groove		3	Clamping component
300	Magnet	31	Joint body
				400	Mounting structure of in-wheel motor encoder	32	Mating part
1	Driving wheel axle	321	First convex part
				11	Mounting groove	322	Second convex part
12	First stop projection	33	Abutting part
				121	First stop surface	331	First abutting arm
2	Coder body	332	Second abutting arm
				21	Encoder PCB

The object of the present invention is to provide a novel and advantageous solution for the above mentioned problems.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if the present invention relates to a directional indication, the directional indication is only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a mounting structure and motor of in-wheel motor encoder, figure 1 to figure 8 do the utility model provides an embodiment of in-wheel motor encoder's mounting structure and motor.

The utility model provides a motor 1000, can refer to fig. 1, fig. 2, fig. 4 and fig. 5, the motor 1000 includes the mounting structure 400 of the wheel hub motor encoder, the bearing 100, the housing assembly 200 and the magnet 300; the mounting structure 400 of the hub motor encoder comprises an encoder body 2 which is mounted and fixed on a driving wheel shaft 1 and can monitor the rotating speed of the driving wheel shaft 1 in real time, so that the rotating speed of the motor 1000 can be monitored conveniently, and when the motor 1000 is applied to a mower, the walking mileage of the mower can be detected, so that the mower can be operated and controlled conveniently; two bearings 100 are arranged, the two bearings 100 are arranged at intervals along the axial direction of the driving wheel shaft 1, and one bearing 100 is arranged corresponding to the mounting groove 11 on the mounting structure 400 of the hub motor encoder; the shell assembly 200 is connected with the two bearings 100 and is covered at one end of the driving wheel shaft 1, which is provided with the mounting groove 11, so as to seal one end of the driving wheel shaft 1, the other end of the driving wheel shaft 1 is used for being connected with a driven part, and the shell assembly 200 is provided with a limiting part 210; the magnet 300 is disposed on the housing assembly 200 and corresponds to the encoder body 2, the magnet 300 is provided with a position-limiting matching portion 32 matched with the position-limiting portion 210, and the position-limiting portion 210 is matched with the position-limiting matching portion 32 to fix the magnet 300 on the housing assembly 200.

In an embodiment, referring to fig. 1 and 5, one of the position-limiting portion 210 and the position-limiting engaging portion 32 is configured as a position-limiting groove 210a, and the other is configured as a position-limiting protrusion engaged with the position-limiting groove 210 a. The shell assembly 200 is provided with a convex boss protruding toward one side of the encoder body 2, the limiting groove 210a is provided on the convex boss, and the magnet 300 is accommodated in the limiting groove 210a to form interference fit with the limiting groove 210 a.

Of course, in other embodiments, the magnet 300 may be provided with a convex hull to cooperate with the limiting groove 210 a. The arrangement forms of the limiting part 210 and the limiting matching part 32 are various, and the installation structure is simpler and is not detailed herein.

In order to make the encoder body 2 be fixed on the driving axle 1 more conveniently, the embodiment provides a mounting structure 400 of an in-wheel motor encoder. Specifically, referring to fig. 3, 4, 7 and 8, in the present embodiment, the mounting structure 400 of the in-wheel motor encoder includes a driving wheel shaft 1, an encoder body 2 and a clamping component 3, wherein a mounting groove 11 is formed at one axial end of the driving wheel shaft 1, a first stop surface 121 facing a notch of the mounting groove 11 is formed in the mounting groove 11, the mounting groove 11 can be formed by cutting the driving wheel shaft 1 in the axial direction, of course, the mounting groove 11 can also be formed on a sleeving component, such as a sleeve, and then the sleeve is sleeved on one end of the driving wheel shaft 1; the encoder body 2 is accommodated in the mounting groove 11, and the encoder body 2 is provided with a first abutting surface 211 which forms abutting fit with the first stopping surface 121; the clamping part 3 at least partially extends into the mounting groove 11 and abuts against one side of the encoder body 2, which is opposite to the first abutting surface 211; the driving wheel shaft 1 is provided with a mounting portion 22, the clamping component 3 is provided with a matching portion 32 matched with the mounting portion 22, and the mounting portion 22 is matched with the matching portion 32 and used for fixedly mounting the clamping component 3 on the driving wheel shaft 1.

The utility model provides an among the technical scheme, through being provided with mounting groove 11 on driving wheel axle 1 to restrict encoder body 2 in mounting groove 11, and live one side of encoder body 2 through the first backstop face 121 butt in mounting groove 11, through 3 butts of joint part in encoder body 2's opposite side, thereby be fixed in mounting groove 11 with the restriction of encoder body 2 in, for the mounting means of traditional encoder, the utility model discloses a mounting structure of motor 1000 encoder, it is all more convenient to install and dismantle, and simple structure, and is with low costs.

It should be noted that there are various types of the encoder body 2, and therefore, the corresponding encoder has different structures, and generally, the encoder body 2 may include the encoder PCB 21 and the components disposed on the encoder PCB 21. Of course, a protective film, a protective pad, or the like may be provided on the surface of the encoder PCB 21. Joint part 3 can direct butt on encoder PCB board 21 when carrying out the butt to encoder body 2, also can the butt on if protection film, protection pad, other spare parts, or on other structures on the encoder PCB board 21 to make encoder body 2 be difficult for all belonging to this novel protection scope of implementation from the butt mode that the notch of mounting groove 11 deviate from.

Specifically, in an embodiment, which can be combined with fig. 4 and 8, the inner side wall of the mounting groove 11 is convexly provided with a first stopping protrusion 12, and the first stopping protrusion 12 faces the surface of the notch of the mounting groove 11 to form a first stopping surface 121; when the encoder body 2 includes the encoder PCB board 21, the encoder PCB board 21 faces away from the surface of the notch of the mounting groove 11 to form the first abutment surface 211. The encoder body 2 can be limited to move along the radial direction of the driving wheel shaft 1 by the inner side wall of the mounting groove 11, and the encoder PCB 21 is limited to move towards the mounting groove 11 along the axial direction of the driving wheel shaft 1 by the first stopping bulge 12, so that the encoder body 2 is limited in the mounting groove 11.

Because joint part 3 mainly used is lived encoder body 2 in the butt joint, consequently joint part's fixed should be firm, and joint part 3's fixed form has the multiple. In an embodiment, when the motor 1000 includes the housing assembly 200, the clamping member 3 may be installed and fixed on the housing assembly 200, and when the housing assembly 200 covers the notch of the mounting groove 11, a portion of the clamping member 3 extends into the mounting groove 11 to abut against the encoder body 2.

In another embodiment, the snap-in part 3 can be directly mounted and fixed on the driving wheel shaft 1, and the size is set for more convenient control.

When the clamping component 3 is fixed on the driving wheel shaft 1, one of the mounting part 22 and the matching part 32 can be set as a clamping hook, and the other can be set as a buckling part matched with the clamping hook, and the clamping hook is matched with the buckling part, so that the installation and the disassembly are easy.

In an embodiment, as shown in fig. 3 and 4, a first groove 221 is formed on the inner sidewall of the mounting groove 11 to form a fastening portion; the clamping component 3 comprises a clamping body 31 which is annularly arranged, the clamping body 31 is sleeved on the inner side of the mounting groove 11, a first convex part 321 is convexly arranged on the outer annular wall of the clamping body 31, and the first convex part 321 is matched with the first groove 221 to form a clamping hook; the card body 31 abuts against the encoder body 2. The joint part 3 card is located 11 inboards of mounting groove, when the installation, place encoder body 2 in mounting groove 11 earlier, so that one side that encoder PCB board 21 was equipped with components and parts is towards the notch of mounting groove 11, make the protruding 12 butts of the back and the first backstop of encoder PCB board 21, place joint part 3 in mounting groove 11 from the notch of mounting groove 11 again, after first protruding part 321 card was located in first recess 221, the tip of joint body 31 then just in time butt on encoder body 2, in order to carry out spacing with encoder body 2, thereby the structure is compacter.

In another embodiment, which can be combined with fig. 7 and 8, the outer sidewall of the mounting groove 11 is formed with a second groove 222 to form a buckle portion; the clamping part 3 comprises a clamping body 31 which is annularly arranged, the clamping body 31 is sleeved outside the mounting groove 11, a second convex part 322 is convexly arranged on the inner annular wall of the clamping body 31, and the second convex part 322 is matched with the second groove 222 to form a clamping hook; an abutting portion 33 is formed on an inner annular wall of the card body 31, and the abutting portion 33 abuts on a side of the encoder body 2 facing away from the first abutting surface 211. The outside of mounting groove 11 is located to joint part 3 card, when the installation, place encoder body 2 in mounting groove 11 earlier, so that one side that encoder PCB board 21 was equipped with components and parts is towards the notch of mounting groove 11, make the protruding 12 butts of the back and the first backstop of encoder PCB board 21, locate the outside of mounting groove 11 with joint part 3 cover again, second recess 222 is located back when second convex part 322 card, butt portion 33 then just in time butt on encoder body 2, in order to carry out spacing with encoder body 2. With second convex part 322 and second recess 222 joint in the outside of mounting groove 11, can be more convenient for observe the installation whether target in place, and also be more convenient for installation and dismantlement.

Further, referring to fig. 8, the abutting portion 33 may include a first abutting arm 331 protruding from the inner annular wall of the clamping body 31 and a second abutting arm 332 extending from the first abutting arm 331 toward the encoder body 2, wherein one end of the second abutting arm 332 away from the first abutting arm 331 abuts against the encoder body 2, and specifically, the second abutting arm 332 may abut against the periphery of the encoder PCB board 21 to avoid interference with other components on the encoder PCB.

It is understood that the arrangement form of the mounting portion 22 and the matching portion 32 is not limited to the above one, and in another embodiment, the clamping member 3 may include an elastic clamping member disposed at the notch of the mounting groove 11, and the elastic clamping member abuts against the side of the encoder body 2 facing away from the first abutting surface 211.

Elastic clamping piece can be an organic whole with mounting groove 11 and set up, also can be fixed in mounting groove 11 through the mounting structure installation.

Specifically, the elastic clamping piece can be arranged as one of a metal elastic sheet, an elastic retainer ring for holes, a plastic buckle or a steel wire retainer ring for holes, and is simple in structure and convenient to manufacture.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings or directly or indirectly applied to other related technical fields are included in the same way in the protection scope of the present invention.

Claims

1. An in-wheel motor encoder mounting structure (400), comprising:

the driving wheel shaft (1), wherein a mounting groove (11) is formed at one axial end of the driving wheel shaft (1), and a first stop surface (121) facing a notch of the mounting groove (11) is formed in the mounting groove (11);

the encoder body (2) is arranged in the mounting groove (11), and the encoder body (2) is provided with a first abutting surface (211) which is in abutting fit with the first stopping surface (121); and the number of the first and second groups,

the clamping component (3) at least partially extends into the mounting groove (11) and abuts against one side, back to the first abutting surface (211), of the encoder body (2);

the driving wheel shaft (1) is provided with an installation part (22), the clamping part (3) is provided with a matching part (32) matched with the installation part (22), the installation part (22) is matched with the matching part (32) and is used for fixedly installing the clamping part (3) on the driving wheel shaft (1).

2. The mounting structure (400) of the in-wheel motor encoder according to claim 1, wherein the inner side wall of the mounting groove (11) is convexly provided with a first stopping protrusion (12), and the first stopping protrusion (12) faces the surface of the notch of the mounting groove (11) to form the first stopping surface (121);

the encoder body (2) comprises an encoder PCB (21), and the encoder PCB (21) faces away from the surface of the notch of the mounting groove (11) to form the first abutting surface (211).

3. The in-wheel motor encoder mounting structure (400) of claim 1, wherein one of the mounting portion (22) and the engagement portion (32) is configured as a hook, and the other is configured as a hook portion engaged with the hook.

4. The mounting structure (400) of the in-wheel motor encoder according to claim 3, wherein the inner side wall of the mounting groove (11) is formed with a first groove (221) to form the fastening part;

the clamping component (3) comprises a clamping body (31) which is annularly arranged, the clamping body (31) is sleeved on the inner side of the mounting groove (11), a first convex part (321) is convexly arranged on the outer ring wall of the clamping body (31), and the first convex part (321) is matched with the first groove (221) to form the clamping hook;

the clamping body (31) is abutted against the encoder body (2).

5. The mounting structure (400) of the in-wheel motor encoder as claimed in claim 3, wherein the outer side wall of the mounting groove (11) is formed with a second groove (222) to form the buckling part;

the clamping component (3) comprises a clamping body (31) which is annularly arranged, the clamping body (31) is sleeved on the outer side of the mounting groove (11), a second convex part (322) is convexly arranged on the inner annular wall of the clamping body (31), and the second convex part (322) is matched with the second groove (222) to form the clamping hook;

an abutting part (33) is formed on the inner annular wall of the clamping body (31), and the abutting part (33) abuts against one side, back to the first abutting surface (211), of the encoder body (2).

6. The mounting structure (400) of the in-wheel motor encoder according to claim 5, wherein the abutting portion (33) includes a first abutting arm (331) protruding from an inner annular wall of the clamping body (31), and a second abutting arm (332) extending from the first abutting arm (331) toward the encoder body (2), and an end of the second abutting arm (332) away from the first abutting arm (331) abuts against the encoder body (2).

7. The mounting structure (400) of the in-wheel motor encoder according to claim 1, wherein the clamping member (3) comprises an elastic clamping member disposed at the notch of the mounting groove (11), and the elastic clamping member abuts against one side of the encoder body (2) facing away from the first abutting surface (211).

8. The mounting structure (400) of the in-wheel motor encoder according to claim 7, wherein the elastic clamping member is one of a metal spring, a hole circlip, a plastic buckle or a hole steel wire circlip.

9. An electric machine (1000), comprising:

the mounting structure (400) of an in-wheel motor encoder according to any of claims 1 to 8;

the two bearings (100) are arranged at intervals along the axial direction of the driving wheel shaft (1), and one of the bearings (100) is arranged corresponding to the mounting groove (11);

the shell assembly (200) is connected with the two bearings (100) and is covered at one end, provided with the mounting groove (11), of the driving wheel shaft (1), and a limiting part (210) is arranged on the shell assembly (200); and the number of the first and second groups,

the magnet (300) is arranged on the shell assembly (200) and corresponds to the encoder body (2), and the magnet (300) is provided with a limiting matching part (32) matched with the limiting part (210).

10. The electric machine (1000) of claim 9, wherein one of the position-limiting portion (210) and the position-limiting engagement portion (32) is configured as a position-limiting groove (210 a), and the other is configured as a position-limiting protrusion that engages with the position-limiting groove (210 a).