CN214096094U - Small-size no bearing encoder - Google Patents
Small-size no bearing encoder Download PDFInfo
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- CN214096094U CN214096094U CN202120358200.XU CN202120358200U CN214096094U CN 214096094 U CN214096094 U CN 214096094U CN 202120358200 U CN202120358200 U CN 202120358200U CN 214096094 U CN214096094 U CN 214096094U
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Abstract
The utility model relates to a small-size no bearing encoder, it is including dismantling the base of connection on the motor casing, the cover is established and can be dismantled the axle sleeve of connection on the motor bearing, and the circuit board of fixed connection on the base, fixedly connected with grating piece on the axle sleeve, fixed connection has light output spare on the circuit board, light receiving spare and wiring end, still including the assembly locating plate, the motor bearing, a pedestal, the coaxial core line in the centre of a circle of axle sleeve and circuit board, circuit board and axle sleeve all are located between assembly locating plate and the base, base and axle sleeve all can dismantle with the assembly locating plate and be connected. The application has the effects of simple and convenient installation and high one-time qualification rate.
Description
Technical Field
The application relates to the field of photoelectric coding, in particular to a small-size bearingless encoder.
Background
The photoelectric encoder is a sensor which converts the mechanical geometric displacement on an output shaft into pulse or digital quantity by photoelectric conversion. The method is widely applied to various industries such as automation control, scientific research units, schools, military industry and the like.
The photoelectric encoder mainly comprises a light source, a light code disc and a photosensitive element. The grating disk is perforated equally on the circular plate. Because the photoelectric code disc is coaxial with the motor, when the motor rotates, the grating disc and the motor rotate at the same speed, a plurality of pulse signals are detected and output by the detection device, and the current rotating speed of the motor is reflected by calculating the number of pulses output by the photoelectric encoder per second.
Most encoders on the market at present all have the bearing because it is highly required to the space, positioning accuracy is poor, the structure is complicated to be unfavorable for the installation, general operating personnel assemble not need professional technical personnel, and once only the qualification rate is low moreover, the installation rate is slow.
SUMMERY OF THE UTILITY MODEL
In order to make no bearing encoder installation simple and convenient, disposable qualification rate height, this application provides a small-size no bearing encoder.
The application provides a small-size no bearing encoder adopts following technical scheme:
the utility model provides a small-size no bearing encoder, is including dismantling the connection on the motor casing base, cover are established and can be dismantled the connection on the motor bearing axle sleeve and fixed connection are in on the base the circuit board, fixedly connected with on the axle sleeve grating piece, fixedly connected with on the circuit board light output spare light receiving spare and wiring end still includes the assembly locating plate, the motor bearing the base the axle sleeve and the coaxial lead in the centre of a circle of circuit board, the circuit board with the axle sleeve all is located the assembly locating plate with between the base, the base with the axle sleeve all with the connection can be dismantled to the assembly locating plate.
Through adopting above-mentioned technical scheme, the base of small-size no bearing encoder can be dismantled with the axle sleeve and be connected through the assembly positioning board, overlaps the direct cover of small-size no bearing encoder on the motor shaft earlier during the installation, again with base installation on the motor casing, then with axle sleeve installation on motor bearing, dismantle the assembly positioning board down at last to this accomplishes whole assembly process, disposable qualification rate is high, the installation rate is fast, in addition to the space requirement low, positioning accuracy is high, the structure is simple relatively.
Preferably, the base with motor casing threaded connection has the bolt, the base is provided with the arc hole, the bolt is worn to establish arc hole and motor casing threaded connection.
Through adopting above-mentioned technical scheme, when installing the base on the motor casing, the staff is installed to the setting up of arc hole convenience, is favorable to reducing the probability of installation failure.
Preferably, the shaft sleeve and the motor bearing are connected with the jackscrew, the jackscrew is in threaded connection with the shaft sleeve, and the jackscrew is in abutting connection with the motor bearing.
Through adopting above-mentioned technical scheme, the relative pivoted condition between motor shaft and axle sleeve can be reduced to the jackscrew, and dismantles the convenience, is favorable to promoting the installation effectiveness of small-size no bearing encoder.
Preferably, a spring gasket and a flat sheet are arranged between the nut of the bolt and the motor shell, and thread glue is arranged between the bolt and the motor shell and between the jackscrew and the shaft sleeve.
By adopting the technical scheme, the flat sheet is beneficial to increasing the contact area of the bolt, reducing the pressure stress of the bearing surface and protecting the surface of the motor shell; the motor shell inevitably vibrates when the motor runs, and the spring gasket is favorable for increasing the pretightening force and reducing the bolt looseness; the arrangement of the thread glue further strengthens the bolt, and reduces the occurrence of loosening or off-line caused by impact and vibration of the bolt.
Preferably, the side surface of the base close to the assembling positioning plate is fixedly connected with the connecting block, and the base is detachably connected with the assembling positioning plate through the connecting block; the circuit board is provided with the interface in the position that is close to the connecting block, the connecting block with the connecting block cooperation of pegging graft.
By adopting the technical scheme, the base is directly connected with the assembly positioning plate through the connecting block, so that the relative position fixation of the base and the assembly positioning plate is favorably ensured, and the mounting precision of the small-sized bearingless encoder is improved; the circuit board is in plug-in fit with the connecting block, and the situation that the circuit board deviates relative to the connecting block is further reduced.
Preferably, the shaft sleeve is sleeved on the circuit board, the side surface of the shaft sleeve, which is close to the base, is fixedly connected with the outer ring body, and the grating sheet is fixedly connected to the side surface of the outer ring body, which is close to the circuit board.
Through adopting above-mentioned technical scheme, being provided with of outer annular body does benefit to fixed grating piece, and reinforcing joint strength reduces the relative axle sleeve pivoted condition of grating piece and takes place.
Preferably, the light receiving element and the light output element are located on two sides of the grating sheet, the light receiving element is fixedly connected to a side surface, close to the grating sheet, of the circuit board, and both the light receiving element and the light output element are located in an axial direction of the circuit board.
By adopting the technical scheme, the positions of the light receiving part and the light output part are relatively fixed, so that the work quality is favorably ensured, and the occurrence of faults is reduced.
Preferably, the through hole penetrates through the base, and the light output piece is matched with the through hole and is positioned in the through hole.
Through adopting above-mentioned technical scheme, being provided with of through-hole does benefit to the space utilization who improves small-size bearingless encoder, reduces holistic occupation space, easy to assemble.
Preferably, the terminal is located on a side of the circuit board away from the light receiving element.
Through adopting above-mentioned technical scheme, the position that the wiring end set up further improves small-size no bearing encoder's space utilization.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the base of the small-sized bearingless encoder is detachably connected with the shaft sleeve through the assembling and positioning plate, the small-sized bearingless encoder is directly sleeved on the motor shaft during installation, then the base is installed on the motor shell, then the shaft sleeve is installed on a motor bearing, and finally the assembling and positioning plate is detached, so that the whole assembling process is completed, the one-time qualification rate is high, the installation speed is high, in addition, the requirement on space is low, the positioning precision is high, and the structure is relatively simple;
2. the flat sheet is beneficial to increasing the contact area of the bolt, reducing the pressure stress of the pressure bearing surface and protecting the surface of the motor shell; the motor shell inevitably vibrates when the motor runs, and the spring gasket is favorable for increasing the pretightening force and reducing the bolt looseness; the arrangement of the thread glue further strengthens the bolt, and reduces the occurrence of loosening or off-line caused by impact and vibration of the bolt.
Drawings
FIG. 1 is a schematic structural diagram of a small-medium-sized bearingless encoder according to the present application;
FIG. 2 is an exploded view of a small-to-medium type bearingless encoder according to the present application;
FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;
fig. 4 is a schematic diagram of the structure of the side of the circuit board in the application.
Reference numerals: 1. a base; 11. an arc-shaped hole; 12. connecting blocks; 13. a through hole; 2. a shaft sleeve; 21. a grating sheet; 22. carrying out top thread; 23. an outer ring body; 3. a circuit board; 31. a light output member; 32. a light receiving part; 33. a terminal; 34. an interface; 4. and assembling a positioning plate.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a small-size no bearing encoder.
Referring to fig. 1 and 2, the small-sized bearingless encoder includes a circular ring-shaped base 1 for being screwed to a motor casing, a circular ring-shaped shaft sleeve 2 sleeved on and mounted on a motor bearing, a circuit board 3 screwed to the base 1, and an assembly positioning plate 4 detachably connecting the base 1 and the shaft sleeve 2. The motor bearing sequentially penetrates through the base 1, the shaft sleeve 2, the circuit board 3 and the assembling and positioning plate 4, and the circle centers of the motor bearing, the base 1, the shaft sleeve 2 and the circuit board 3 are coaxial.
Referring to fig. 1 and 2, a bolt is connected between the base 1 and the motor casing through threads, a spring gasket and a flat sheet are arranged on a screw rod of the bolt in a penetrating mode, thread glue is coated on the end portion, away from a nut, of the bolt, an arc-shaped hole 11 is formed in the base 1, and the arc-shaped hole 11 is arranged in the bolt in a penetrating mode and connected with the motor casing through threads.
When the base 1 is installed on the motor shell, the arc-shaped holes 11 are convenient for installation by workers; the probability of mounting failure is reduced, and meanwhile, the flat sheet is beneficial to increasing the contact area of the bolt and reducing the pressure stress of the pressure-bearing surface; the arrangement of the spring gasket is beneficial to increasing the pretightening force and reducing the loosening of the bolt; in addition, the arrangement of the thread gluing further strengthens the bolt, and reduces the occurrence of loosening or off-line of the bolt.
Referring to fig. 1 and 2, axle sleeve 2 radially wears to establish and threaded connection has jackscrew 22, and axle sleeve 2 passes through jackscrew 22 to be fixed on the motor bearing, and does not use the bolt fastening, is favorable to reducing the harm to the motor bearing to can reduce the condition of the relative skew between motor shaft and axle sleeve 2, and dismantle conveniently, be favorable to promoting small-size no bearing encoder's installation effectiveness.
Referring to fig. 1 and 2, the base 1 is provided with a connecting block 12 at a side close to the assembling positioning plate 4, the base 1 is in threaded connection with the assembling positioning plate 4 through the connecting block 12, the circuit board 3 is provided with a socket 34 at a position close to the connecting block 12, the socket 34 is in socket fit with the connecting block 12, and the shaft sleeve 2 and the grating sheet 21 are both located at one side of the connecting block 12 close to the center of a circle. The base 1 is directly in threaded connection with the assembly positioning plate 4 through the connecting block 12, so that the relative position of the base 1 and the assembly positioning plate 4 is fixed, the mounting precision of the small-sized bearing-free encoder is improved, and the condition of mounting errors is reduced; the circuit board 3 is in plug-in fit with the connecting block 12, the situation that the circuit board 3 deviates relative to the connecting block 12 is further reduced, and the installation precision is guaranteed.
Referring to fig. 3 and 4, the hub 2 is fixed with the grating sheet 21, and the circuit board 3 is fixed with the light output element 31, the light receiving element 32, and the terminal 33.
Referring to fig. 2 and 3, the shaft sleeve 2 is integrally formed with an annular outer ring 23 on a side surface close to the base 1, the annular grating 21 is fixedly connected to the side surface close to the circuit board 3 of the outer ring 23, the light receiving element 32 is fixed on the side surface close to the grating 21 of the circuit board 3, the light output element 31 is arranged on the side of the grating 21 far away from the light receiving element 32, the light output element 31 is fixed on the circuit board 3 through pins, the pins of the light output element 31 are radially outside the grating 21, and a straight line where the light output element 31 and the light receiving element 32 are located is perpendicular to the side surface of the circuit board 3.
The arrangement of the outer ring body 23 is beneficial to fixing the grating sheet 21, the connection strength is enhanced, the occurrence of the rotation of the grating sheet 21 relative to the shaft sleeve 2 is reduced, and the quality of the small-sized bearingless encoder is ensured; the straight line where the light output element 31 and the light receiving element 32 are located is perpendicular to the side face of the circuit board 3, so that the working quality of the light receiving element 32 and the light output element 31 is guaranteed, and the occurrence of faults is reduced.
Referring to fig. 3 and 4, the terminal 33 is located on the side of the circuit board 3 away from the light receiving element 32 instead of on the same side as the light receiving element 32, so that when the small bearingless encoder is connected to an external device, the probability of touching the light receiving element 32, the grating sheet 21 and the light output element 31 is reduced, and the probability of damaging the small bearingless encoder is reduced.
Referring to fig. 2, the base 1 is provided with a through hole 13 for placing the light output member 31, which is beneficial to improving the space utilization rate of the small-sized bearingless encoder and reducing the volume.
The implementation principle of the embodiment of the application is as follows: base 1 of small-size no bearing encoder is through assembling locating plate 4 and 2 threaded connection of axle sleeve, during the installation earlier establish the direct cover of small-size no bearing encoder on the motor shaft, again with base 1 through the screw install on the motor casing, then pass through jackscrew 22 fixed mounting with axle sleeve 2 on motor bearing, dismantle at last down assembling locating plate 4 to this accomplishes whole assembling process, the disposable percent of pass is high, the installation rate is fast, require low to the space in addition, positioning accuracy is high.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a small-size no bearing encoder, establishes and can dismantle axle sleeve (2) and the fixed connection of connection on the motor bearing including dismantling base (1), the cover on the motor casing and be in circuit board (3) on base (1), fixedly connected with grating piece (21) on axle sleeve (2), fixed connection has light output spare (31), light receiving spare (32) and wiring end (33) on circuit board (3), its characterized in that: the motor bearing, the base (1), the shaft sleeve (2) and the center of a circle of the circuit board (3) are coaxial, the circuit board (3) and the shaft sleeve (2) are located between the assembly positioning plate (4) and the base (1), and the base (1) and the shaft sleeve (2) are detachably connected with the assembly positioning plate (4).
2. The compact bearingless encoder according to claim 1, wherein: the base (1) with motor casing threaded connection has the bolt, base (1) is provided with arc hole (11), the bolt is worn to establish arc hole (11) and motor casing threaded connection.
3. The compact bearingless encoder according to claim 2, wherein: the shaft sleeve (2) is connected with a jackscrew (22) with the motor bearing, the jackscrew (22) with the shaft sleeve (2) is in threaded connection, the jackscrew (22) with the motor bearing supports tight connection.
4. The compact bearingless encoder according to claim 3, wherein: the bolt is characterized in that a spring gasket and a flat sheet are arranged between the nut of the bolt and the motor shell, and thread glue is arranged between the bolt and the motor shell and between the jackscrew (22) and the shaft sleeve (2).
5. The compact bearingless encoder according to claim 1, wherein: the side surface, close to the assembling positioning plate (4), of the base (1) is fixedly connected with a connecting block (12), and the base (1) is detachably connected with the assembling positioning plate (4) through the connecting block (12); the circuit board (3) is provided with a plug interface (34) at a position close to the connecting block (12), and the connecting block (12) is in plug fit with the connecting block (12).
6. The compact bearingless encoder according to claim 1, wherein: the circuit board (3) is sleeved with the shaft sleeve (2), the side surface, close to the base (1), of the shaft sleeve (2) is fixedly connected with an outer ring body (23), and the grating sheet (21) is fixedly connected to the side surface, close to the circuit board (3), of the outer ring body (23).
7. The compact bearingless encoder according to claim 6, wherein: the light receiving part (32) and the light output part (31) are positioned on two sides of the grating sheet (21), the light receiving part (32) is fixedly connected to the side surface, close to the grating sheet (21), of the circuit board (3), and the light receiving part (32) and the light output part (31) are both positioned in the axial direction of the circuit board (3).
8. The compact bearingless encoder according to claim 7, wherein: the base (1) is provided with a through hole (13) in a penetrating manner, and the light output piece (31) is matched with the through hole (13) and is positioned in the through hole (13).
9. The compact bearingless encoder according to claim 7, wherein: the terminal (33) is located on the side of the circuit board (3) remote from the light receiving element (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120358200.XU CN214096094U (en) | 2021-02-07 | 2021-02-07 | Small-size no bearing encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120358200.XU CN214096094U (en) | 2021-02-07 | 2021-02-07 | Small-size no bearing encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214096094U true CN214096094U (en) | 2021-08-31 |
Family
ID=77441128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120358200.XU Active CN214096094U (en) | 2021-02-07 | 2021-02-07 | Small-size no bearing encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214096094U (en) |
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2021
- 2021-02-07 CN CN202120358200.XU patent/CN214096094U/en active Active
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