CN210221120U

CN210221120U - Independent encoder and motor with same

Info

Publication number: CN210221120U
Application number: CN201921338979.8U
Authority: CN
Inventors: Yiqian Zhu; 朱义潜; Min Qian; 钱敏; Yongzhong Zhu; 朱永中
Original assignee: Zzhejiang Hulong Technology Co Ltd
Current assignee: Zzhejiang Hulong Technology Co Ltd
Priority date: 2019-08-17
Filing date: 2019-08-17
Publication date: 2020-03-31
Anticipated expiration: 2029-08-17

Abstract

The utility model belongs to the technical field of motors, in particular to an independent encoder and a motor with the independent encoder; the independent encoder comprises an encoding disc, a grating seat, a grating sheet and a shell, wherein an accommodating cavity is formed in the shell, the encoding disc, the grating seat and the grating sheet are arranged in the accommodating cavity, a through hole penetrating in the axial direction is formed in the middle of the shell, the upper end of the grating seat is arranged close to the through hole in the top surface of the shell, a temporary limiting disc is detachably connected to the upper end of the grating seat, the temporary limiting disc is matched with the shell to limit the grating sheet, and the temporary limiting disc is detached after the encoder is connected with a shaft; the utility model discloses a spacing dish carries on spacingly with the casing cooperation to the grating piece temporarily, can effectively restrict grating piece displacement, ensures that the grating piece does not take place the contact with detecting the groove all the time, the independent transportation and the packing of the independent encoder of being convenient for.

Description

Independent encoder and motor with same

The technical field is as follows:

the utility model belongs to the technical field of the motor, refer in particular to an independent encoder and have motor of independent encoder.

Background art:

currently, most sewing machines employ a direct drive motor to replace the traditional belt drive. The direct drive of the motor is to connect the rotating shaft of the motor with the main shaft of the sewing machine through a coupler, so that the purpose that the motor directly drives the main shaft of the sewing machine to rotate is achieved, and the action of the sewing machine is further controlled. However, the use of the coupling consumes a certain amount of energy, reduces the transmission efficiency, and also increases the noise. In order to realize stable transmission, the rotating shaft of the motor needs to be supported by a bearing, and the motor needs to be maintained and replaced regularly, so that the motor is very inconvenient.

In order to improve the phenomenon, technicians design the main shaft of the sewing machine as a through shaft, the through shaft is used as the main shaft of the sewing machine and also used as a rotating shaft of the motor, and the rotating shaft of the motor is omitted. And the motor is provided with an encoder for measuring the position of the magnetic pole, the rotation angle of the motor, the rotation speed and the like. The traditional encoder is installed on a rotating shaft of a motor, but the rotating shaft is eliminated by the motor due to the adoption of a through shaft structure, and naturally, the encoder needs to be independently transported and packaged.

The utility model discloses an ultra-thin type sewing machine photoelectricity shaft angle encoder that china utility model patent (grant publication No. CN 201062965Y) disclosed, including main part, optoelectronic component, grating dish, grating disk seat, circuit board and cable etc, optoelectronic component sets firmly on the circuit board, and the grating dish sets firmly on grating disk seat, is provided with on optoelectronic component and detects the groove, and the grating dish sets up in detecting the groove, and the both sides face and the outward flange of grating dish all have certain clearance with detecting the groove. When the grating disk is used, the grating disk seat is fixed on a main shaft of a sewing machine, so that in the transportation process, the grating disk is freely arranged in the main body, particularly, the grating disk seat can generate displacement along the axial direction of the grating disk seat.

The invention content is as follows:

the utility model aims at providing a fix a position the grating piece through spacing dish cooperation casing temporarily, prevent effectively that the grating piece from rocking by a wide margin and then by the independent encoder of damage or damage and have the motor of independent encoder in the transportation.

The utility model discloses a realize like this:

the utility model discloses an one of them purpose provides an independent encoder, including the coding disc, the grating seat, grating piece and casing, be provided with the holding chamber in the casing, the coding disc, the grating seat, grating piece set up at the holding intracavity, are provided with the perforating hole that the axial runs through at the middle part of casing, and the perforating hole setting of casing top surface is close to the upper end of grating seat, and upper end detachably at the grating seat is connected with spacing dish temporarily, and spacing dish cooperation casing is spacing to the grating piece temporarily, and spacing dish is dismantled after the encoder is accomplished and is connected with the axle temporarily.

In an independent encoder of the above-mentioned, spacing dish temporarily includes main part and disk body, and the main part is connected with the grating seat, and the disk body is located outside the casing top surface, and the edge of the perforating hole of casing top surface is spacing to realize spacing the axial of grating piece between the up end of the bottom surface of the disk body of spacing dish temporarily and grating seat, the size of the perforating hole of casing top surface and the size looks adaptation of the main part of spacing dish temporarily realize spacing the radial of grating piece.

In the above-mentioned independent encoder, the casing includes left casing and right casing, and the middle part of left casing, right casing is provided with half groove respectively, forms the perforating hole after two groove amalgamations, forms the holding chamber after left casing, the right casing amalgamation.

In the above independent encoder, the upper surface of the right casing is provided with a recess, the center of the recess is the same as the through hole, a cylindrical surface is formed between the recess and the through hole, the cylindrical surface is provided with a through hole, and the grating seat exposed at the through hole is provided with a threaded hole along the radial direction.

In foretell independent encoder, the grating seat includes mount pad and mount pad down, the mount pad includes a mesopore down, and the circumference distributes on the pore wall of this mesopore has the bar recess that sets up more than two along the axial, go up the mount pad and include fixed part and grafting portion down, be provided with the mesopore on last fixed part and grafting portion down, go up the fixed part and be formed with the step face down between the grafting portion, the circumference distributes on the lateral wall of grafting portion down and has quantity and position and the bar arch of the bar recess one-to-one on the mount pad down, the mount pad is inserted through the bar arch and is established in the bar recess and be connected with last mount pad down, and the grating piece sets firmly between the last plane of the step face of last mount pad and mount pad down.

In the above-mentioned independent encoder, the inner circle of the grating sheet is provided with the positioning grooves of which the positions and the number are in one-to-one correspondence with the strip-shaped grooves, and the strip-shaped protrusions of the lower insertion part are inserted into the positioning grooves.

In foretell an independent encoder, it is provided with the arc wall downwards to go up the up end that lies in left casing part on the mount pad, the major diameter portion radius of arc wall is less than the external diameter of last mount pad, be provided with the spread groove on the lateral wall of arc wall, the spread groove includes the constant head tank and the opening that communicates with the constant head tank, be provided with the fluting with opening quantity and position one-to-one on the edge, including inserting the arc of establishing in the arc wall in the main part of spacing dish temporarily, be provided with quantity and the spacing post that the position corresponds with the constant head tank on the outer arc surface of arc, spacing post is from the fluting in proper order, the opening gets into, make spacing post be located the constant head tank through rotating spacing dish temporarily.

In the above independent encoder, more than two mounting posts are arranged in the right casing, open slots are arranged on the mounting posts, the open slots are perpendicular to the axes of the mounting posts, and a circuit board of the encoding disk is inserted in the open slots and fixed on the mounting posts through screws.

Another object of the present invention is to provide a motor with an independent encoder, including the above independent encoder.

In foretell motor with independent encoder the motor includes stator and rotor, is provided with motor housing outside the stator, is provided with the end cover in motor housing's one end, is provided with the shaft hole that is used for installing the pivot on end cover and the rotor, the casing of independent encoder passes through the fix with screw on the end cover.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model limits the grating sheet by the temporary limiting plate and the shell, which can effectively limit the displacement of the grating sheet, ensure that the grating sheet is not contacted with the detection groove all the time, and is convenient for the independent transportation and packaging of the independent encoder; when the utility model discloses an independent encoder is installed back on sewing machine's main shaft along with the motor, will dismantle spacing dish temporarily, and spacing dish temporarily can reduce the installation degree of difficulty when the installation.

2. The utility model discloses application range is wide, is applicable to fields such as sewing machine, lathe.

Description of the drawings:

fig. 1 is one of the front perspective views of the independent encoder of the present invention;

fig. 2 is a back perspective view of the independent encoder of the present invention;

fig. 3 is a second front perspective view of the independent encoder of the present invention;

fig. 4 is a front view of the independent encoder of the present invention;

FIG. 5 is a sectional view A-A of FIG. 4;

fig. 6 is an exploded view of the stand-alone encoder of the present invention;

fig. 7 is one of the schematic diagrams of the right housing of the present invention;

fig. 8 is a second schematic view of the right housing of the present invention;

fig. 9 is a schematic view of a left housing of the present invention;

fig. 10 is an exploded view of the grating sheet and the grating seat of the present invention;

fig. 11 is a schematic view of the limiting plate of the present invention;

fig. 12 is a schematic view of an upper mount of the present invention;

fig. 13 is a schematic view of the motor of the present invention.

In the figure: 1. a circuit board; 2. an optoelectronic component; 3. a grating sheet; 4. an accommodating cavity; 5. a detection tank; 6. an edge; 7. a temporary limiting disc; 8. a left housing; 9. a right housing; 10. a circular groove; 11. sinking; 12. a cylindrical surface; 13. a through hole; 14. an upper mounting seat; 15. a lower mounting seat; 16. a strip-shaped groove; 17. an upper fixing portion; 18. a lower insertion part; 19. a strip-shaped bulge; 20. a card slot; 21. an arc-shaped slot; 22. positioning a groove; 23. an opening; 24. grooving; 25. an arc-shaped plate; 26. a limiting column; 27. a hand twisting plate; 28. mounting a column; 29. an open slot; 30. a motor housing; 31. an end cap; 32. a screw; 33. main part, 34, disk body.

The specific implementation mode is as follows:

the invention is further described below with reference to specific embodiments:

as shown in fig. 1-12, one of them purpose of the utility model is to provide an independent encoder, including code disc, grating seat, grating piece 3 and casing, wherein the code disc includes circuit board 1, optoelectronic component 2, is provided with holding chamber 4 in the casing, and code disc, grating seat, grating piece 3 set up in holding chamber 4, and grating piece 3 sets up on the grating seat, is provided with the perforating hole that the axial runs through at the middle part of casing, and the shape of perforating hole designs according to actual conditions, and this embodiment is preferred to have the round hole. The upper end of the grating seat is arranged close to the through hole on the top surface of the shell, and the grating sheet 3 is arranged in the detection groove 5 of the photoelectric component 2. Be connected with spacing dish 7 temporarily in the upper end detachably of grating seat, spacing dish 7 cooperation casing is spacing to grating piece 3 temporarily, and spacing dish 3 is dismantled after the encoder is accomplished to be connected with the axle temporarily. The temporary limiting disc 7, the grating seat and the through hole of the shell form a mounting hole for the rotating shaft to pass through.

Spacing dish 7 and casing cooperation temporarily can prevent that grating piece 3 from rocking by a wide margin and then colliding and then damaging with detection groove 5 on the photoelectric component 2 of code wheel in transportation and storage process. After installing independent encoder on the axle, like the sewing machine main shaft, will spacing dish 7 dismantles from the grating seat temporarily, and then can not influence sewing machine's normal work.

The utility model discloses an independent encoder is installed on the motor. Because the motor does not have the motor shaft, when the installation, the setting of spacing dish 7 temporarily can reduce the installation degree of difficulty.

Further, the temporary limiting disc 7 comprises a main body 33 and a disc body 34, the main body 33 is connected with the grating seat, the disc body 34 is located outside the top surface of the casing, the edge 6 of the through hole in the top surface of the casing is limited between the bottom surface of the disc body 34 of the temporary limiting disc 7 and the upper end surface of the grating seat to realize axial limiting of the grating sheet 3, and the size of the through hole in the top surface of the casing is matched with the size of the main body 33 of the temporary limiting disc 7 to realize radial limiting of the grating sheet 3.

When the axial spacing is performed, the distance between the bottom surface of the edge 6 of the through hole on the top surface of the shell and the upper end surface of the grating seat is smaller than the distance between the upper plane of the installed grating sheet 3 and the inner top surface of the detection groove 5, or the distance between the grating seat and the bottom surface of the main body of the temporary spacing disc 7 is equal to the thickness of the edge 6 of the through hole on the top surface of the shell, so that the limited axial displacement of the grating sheet 3 is ensured.

During radial limiting, after the main body 33 of the temporary limiting disc 7 is inserted into the through hole, the main body 33 of the temporary limiting disc 7 does not generate displacement or generates small displacement in the radial direction. When the through hole is a circular hole, the diameter of the through hole is equal to or slightly larger than the diameter of the main body 33 of the temporary stopper disk 7.

Interim spacing dish 7 carry on spacingly can also adopt following structure with the casing cooperation:

set up the external screw thread on the cylinder 33 of spacing dish 7 temporarily, the perforating hole that sets up the casing top surface is the screw hole, carries out axial, radial spacing through threaded connection between spacing dish 7 temporarily and the casing.

Further, the shell of the utility model can be composed of an upper shell and a lower shell. During installation, radial threaded holes can be formed in the grating seat, and screws which can be conveniently inserted into the threaded holes and can be screwed down are arranged on the outer side wall of the shell to realize connection with the rotating shaft.

The utility model discloses it is preferred the casing includes left casing 8 and right casing 9, and the middle part of left casing 8, right casing 9 is provided with half groove 10 respectively, forms the perforating hole after two half groove 10 amalgamations, forms holding chamber 4 after left casing 8, the amalgamation of right casing 9. The left shell 8 and the right shell 9 are fixedly connected through screws, so that the assembly and disassembly are convenient. In order to realize the location, set up arch and mounting groove on the adjacent lateral wall of left casing 8, right casing 9, the installation is fixed the back through protruding setting in the mounting groove, then carries out fixed connection through the screw.

In the case where the through hole is a circular hole, the half groove 10 in the middle of the left and

right cases

8 and 9 is a half groove.

As shown in fig. 9, the upper surface of the right casing 9 is provided with a recess, the recess of this embodiment is a fan-shaped recess 11, the circle center of the fan-shaped recess 11 is the same as the round hole, the inner diameter of the fan-shaped recess 11 is greater than the inner diameter of the round hole, an arc-shaped cylindrical surface 12 is formed between the fan-shaped recess 11 and the annular convex edge 6, a through hole 13 is provided on the arc-shaped cylindrical surface 12, a threaded hole is radially provided on the grating seat exposed at the through hole 13, and during installation, the screwdriver passes through the through hole 13 to screw down the screw in the rotating shaft.

As shown in fig. 10, the grating seat includes an upper mounting seat 14 and a lower mounting seat 15, the lower mounting seat 15 includes a middle hole, more than two strip-shaped grooves 16 axially disposed are circumferentially distributed on a hole wall of the middle hole, the upper mounting seat 14 includes an upper fixing portion 17 and a lower insertion portion 18, the upper fixing portion 17 and the lower insertion portion 18 are provided with the middle hole, a step surface is formed between the upper fixing portion 17 and the lower insertion portion 18, strip-shaped protrusions 19 are circumferentially distributed on an outer side wall of the lower insertion portion 18, the number and the positions of the strip-shaped protrusions correspond to the strip-shaped grooves 16 on the lower mounting seat 15 one by one, the lower mounting seat 15 is inserted into the strip-shaped grooves 16 through the strip-shaped protrusions 19 and connected with the upper mounting seat 14, and the grating sheet 3 is fixedly disposed between the step surface of the upper mounting seat 14 and an upper plane of. The strip-shaped protrusion 19 and the strip-shaped groove 16 can prevent the upper mounting seat 14 and the lower mounting seat 15 from generating circumferential displacement, thereby influencing the detection result.

For the convenience of insertion, the strip-shaped groove 16 and the strip-shaped protrusion 19 are configured to be large at the top and small at the bottom.

The upper mounting seat 14 is fixedly connected with the lower mounting seat 15 through glue dispensing or ultrasonic wave.

In order to prevent the grating sheet 3 from generating circumferential displacement, the inner ring of the grating sheet 3 is provided with a plurality of slots 20 corresponding to the strip-shaped grooves 16, and the strip-shaped protrusions 19 of the lower insertion part 18 are inserted into the slots 20.

As shown in fig. 6, the connection structure of the temporary limiting disc 7 and the grating seat of the present invention is as follows:

go up the up end that lies in left casing 8 part on mount pad 14 and start being provided with arc 21 downwards, the major diameter portion radius of arc 21 is less than the external diameter of last mount pad 14, is provided with the spread groove on the lateral wall of arc 21, and the spread groove includes constant head tank 22 and the opening 23 with constant head tank 22 intercommunication, be provided with the fluting 24 with opening 23 quantity and position one-to-one on edge 6, be provided with the arc 25 that can insert and establish in arc 21 in the bottom surface of spacing dish 7 temporarily, be provided with quantity and position and the spacing post 26 that constant head tank 22 corresponds on the outer arc surface of arc 25, spacing post 26 gets into from fluting 24, opening 23 in proper order, makes spacing post 26 be located constant head tank 22 through rotating spacing dish 7 temporarily, just so can realize being connected of spacing dish 7 temporarily and grating seat. When the disassembly is carried out, the temporary limiting disc 7 is rotated reversely.

The inner hole of the temporary limiting disc 7 and the inner hole of the lower mounting seat 15 are used for mounting a rotating shaft.

The temporary limiting disc 7 and the grating seat may be connected by a threaded connection or a tight-fit insertion connection, and the above-mentioned connection structure of the limiting column 26 is preferred in this embodiment.

In order to facilitate the rotation of the temporary limiting disc 7, two hand twisting plates 27 are uniformly distributed on the upper plane of the temporary limiting disc 7 in the circumferential direction.

The utility model discloses still control the mark respectively on the last plane of interim spacing dish 7 and right casing 9, like the arrow shown in this embodiment, when the arrow is aimed at, represent spacing post 26 and have rotated to the constant head tank 22 in and rotate and target in place.

As shown in fig. 7, the right housing 9 is provided with two or more mounting posts 28, and the mounting posts 28 are provided with open grooves 29, wherein the open grooves 29 are perpendicular to the axes of the mounting posts 28. The circuit board 1 is inserted into the opening groove 29 and the circuit board 1 is fixed to the mounting post 28 by screws. The circuit board 1 is stable and firm in structure after being installed.

Another object of the present invention is to provide a motor with an independent encoder, the above-mentioned independent encoder.

As shown in fig. 13, the motor includes a stator and a rotor, a motor housing 30 is disposed outside the stator, an end cover 31 is disposed at one end of the motor housing 30, and the end cover 31 and the rotor are provided with a shaft hole for mounting a rotating shaft, where the shaft hole is also a main shaft of the sewing machine. The housing of the independent encoder is fixed to the end cap 31 by screws 32.

In the present specification, the terms "upper", "lower", "left", "right", "middle" and "one" are used for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the corresponding parts may be changed or adjusted without substantial technical changes.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an independent encoder, includes coding disc, grating seat, grating piece (3) and casing, is provided with holding chamber (4) in the casing, and coding disc, grating seat, grating piece (3) set up in holding chamber (4), are provided with the axial through-hole that runs through, its characterized in that at the middle part of casing: the upper end of grating seat is close to the perforating hole setting of casing top surface, is connected with spacing dish (7) temporarily in the upper end detachably of grating seat, and spacing dish (7) cooperation casing is spacing to grating piece (3) temporarily, and spacing dish (7) are dismantled after the encoder is accomplished and is connected of axle temporarily.

2. A self-contained encoder as claimed in claim 1, wherein: spacing dish (7) temporarily includes main part (33) and disk body (34), and main part (33) are connected with the grating seat, and disk body (34) are located outside the casing top surface, and edge (6) of the perforating hole of casing top surface are spacing to realize spacing the axial of grating piece (3) between the bottom surface of the disk body of spacing dish (7) temporarily and the up end of grating seat, the size of the perforating hole of casing top surface and the size looks adaptation of main part (33) of spacing dish (7) temporarily realize spacing the radial of grating piece (3).

3. A self-contained encoder as claimed in claim 1 or 2, wherein: the shell comprises a left shell (8) and a right shell (9), wherein the middle parts of the left shell (8) and the right shell (9) are respectively provided with a half groove (10), the half grooves (10) are spliced to form a through hole, and the left shell (8) and the right shell (9) are spliced to form an accommodating cavity (4).

4. A self-contained encoder as claimed in claim 3, wherein: the upper surface of the right shell (9) is provided with a lower recess (11), the center of the lower recess (11) is the same as that of the through hole, a cylindrical surface (12) is formed between the lower recess (11) and the through hole, the cylindrical surface (12) is provided with a through hole (13), and a grating seat exposed at the through hole (13) is provided with a threaded hole along the radial direction.

5. A self-contained encoder as claimed in claim 1 or 2, wherein: the grating seat comprises an upper mounting seat (14) and a lower mounting seat (15), the lower mounting seat (15) comprises a middle hole, more than two strip-shaped grooves (16) which are arranged along the axial direction are circumferentially distributed on the hole wall of the middle hole, the upper mounting seat (14) comprises an upper fixing part (17) and a lower insertion part (18), a middle hole is arranged on the upper fixing part (17) and the lower inserting part (18), a step surface is formed between the upper fixing part (17) and the lower inserting part (18), the outer side wall of the lower insertion part (18) is circumferentially distributed with strip-shaped bulges (19) the number and the positions of which are in one-to-one correspondence with the strip-shaped grooves (16) on the lower mounting seat (15), the lower mounting seat (15) is inserted in the strip-shaped groove (16) through the strip-shaped bulge (19) and connected with the upper mounting seat (14), and the grating sheet (3) is fixedly arranged between the step surface of the upper mounting seat (14) and the upper plane of the lower mounting seat (15).

6. An independent encoder according to claim 5, characterized in that: the inner ring of the grating sheet (3) is provided with clamping grooves (20) the positions and the number of which correspond to the strip-shaped grooves (16) one by one, and the strip-shaped bulges (19) of the lower insertion part (18) are inserted in the clamping grooves (20).

7. An independent encoder according to claim 5, characterized in that: an arc-shaped groove (21) is arranged on the upper end surface of the upper mounting seat (14) positioned at the left shell (8) downwards, the radius of the large-diameter part of the arc-shaped groove (21) is smaller than the outer diameter of the upper mounting seat (14), the side wall of the arc-shaped groove (21) is provided with a connecting groove, the connecting groove comprises a positioning groove (22) and an opening (23) communicated with the positioning groove (22), the edge (6) is provided with slots (24) which correspond to the openings (23) in number and position one by one, the main body (33) of the temporary limiting disc (7) comprises an arc-shaped plate (25) which can be inserted in the arc-shaped groove (21), the outer arc surface of the arc-shaped plate (25) is provided with limiting columns (26) the number and the positions of which correspond to the positioning grooves (22), the limiting columns (26) enter from the open grooves (24) and the openings (23) in sequence, the temporary limiting disc (7) is rotated to enable the limiting column (26) to be positioned in the positioning groove (22).

8. A self-contained encoder as claimed in claim 3, wherein: more than two mounting columns (28) are arranged in the right shell (9), open grooves (29) are formed in the mounting columns (28), the open grooves (29) are perpendicular to the axis of the mounting columns (28), and a circuit board (1) of the coding disc is inserted into the open grooves (29) and fixed on the mounting columns (28) through screws.

9. A motor having an independent encoder, characterized by: comprising a stand-alone encoder according to any of claims 1-8.

10. A motor having an independent encoder according to claim 9, wherein: the motor comprises a stator and a rotor, a motor shell (30) is arranged outside the stator, an end cover (31) is arranged at one end of the motor shell (30), shaft holes for installing a rotating shaft are formed in the end cover (31) and the rotor, and a shell of the independent encoder is fixed on the end cover (31) through screws (32).