Optical magnetic combined encoder

Abstract

The utility model discloses a kind of optical-magnetic combination encoders, including optical encoder structure, magnetic encoder structure and transmission structure, the transmission structure with the optical encoder structure connection, the optical encoder structure with the magnetic encoder structure connection use, the transmission structure drives the optical encoder structure operation makes optical signal conversion into pulse signal, while the optical encoder structure drives the magnetic encoder structure operation makes magnetic signal conversion into pulse signal.The utility model is connected by the one end of optical encoder structure with transmission structure, the other end is connected with magnetic encoder structure, so that optical encoder structure and magnetic encoder structure can simultaneously convert signal, improve precision;The utility model structure is simple, small in size, low in cost, and is worth promoting use.

Description

Technical Field

[0001] This utility model belongs to the field of encoder technology, and specifically relates to an optical-magnetic combined encoder. Background Technology

[0002] An encoder is a device that encodes and converts signals (such as bitstreams) or data into a signal form that can be used for communication, transmission, and storage. Existing encoders can be broadly classified into optical, magnetic, inductive, and capacitive types, with optical and magnetic encoders being the two most commonly used. However, current encoders often employ only one of these two types, resulting in problems such as excessive size, poor interference resistance, low accuracy, and susceptibility to failure. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an optical-magnetic combined encoder that solves the problems of excessive size, poor anti-interference ability, poor accuracy and easy failure of the encoder in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An optical-magnetic combined encoder includes an optical encoder structure, a magnetic encoder structure, and a transmission structure. The transmission structure is connected to the optical encoder structure, and the optical encoder structure is connected to the magnetic encoder structure. In use, the transmission structure drives the optical encoder structure to operate, converting optical signals into pulse signals, while the optical encoder structure drives the magnetic encoder structure to operate, converting magnetic signals into pulse signals.

[0006] In the above scheme, the optical encoder structure includes a code disk assembly, an optical signal processing unit, and a first positioning assembly, wherein the code disk assembly and the optical signal processing unit are disposed within the first positioning assembly.

[0007] In the above scheme, the code disk assembly includes a code disk, a code disk base shaft, and a light source. The code disk is sleeved on the code disk base shaft and connected to the light source. One end of the code disk base shaft is connected to the transmission structure, and the other end is connected to the magnetic encoder structure.

[0008] In the above scheme, the first positioning component includes an end cap and a first bearing. The code disk, the code disk seat shaft, the optical signal processing component, the light source, and the first bearing are all connected to the end cap. The code disk seat shaft is connected to the transmission structure through the first bearing.

[0009] In the above scheme, the magnetic encoder structure includes a gear assembly, a magnetic signal processing component, and a second positioning component. The gear assembly is connected to the magnetic signal processing component through the second positioning component; and the gear assembly is also connected to the code disk base shaft.

[0010] In the above scheme, the gear assembly includes a sun gear assembly and several planet gear assemblies, the sun gear assembly and several planet gear assemblies are connected in cooperation; and the sun gear assembly is also connected to the encoder base shaft.

[0011] In the above scheme, the sun gear assembly includes a sun gear, a first magnet, and a first shielding sleeve. The sun gear is connected to the encoder base shaft. The first magnet and the first shielding sleeve are both disposed on the sun gear, and the first shielding sleeve is sleeved on the first magnet. In use, the encoder base shaft drives the sun gear to rotate, so that the first magnet transmits the magnetic signal to the magnetic signal processing unit.

[0012] In the above scheme, the planetary gear assembly includes planetary gears, a second magnet, a second shielding sleeve, and planetary gear bearings. The planetary gears are connected to the sun gear. The second magnet and the second shielding sleeve are both disposed on the planetary gears, and the second shielding sleeve is fitted onto the second magnet. The planetary gears are connected to the second positioning assembly through the planetary gear bearings. In use, the sun gear drives the planetary gears to rotate, causing the second magnet to transmit magnetic signals to the magnetic signal processing unit.

[0013] In the above scheme, the second positioning component includes a cover, a second bearing, and a plurality of positioning posts. The cover is sleeved on the first positioning component, and the second bearing and the plurality of positioning posts are all disposed inside the cover. The sun gear is connected to the encoder base shaft through the second bearing. The planetary gears are connected to the cover through the planetary gear bearings.

[0014] In the above scheme, the optical-magnetic combined encoder also includes a housing, and the optical encoder structure, the magnetic encoder structure and the transmission structure are all disposed in the housing.

[0015] Compared with the prior art, this utility model connects one end of the optical encoder structure to the transmission structure and the other end to the magnetic encoder structure, enabling the optical encoder structure and the magnetic encoder structure to convert signals simultaneously, thereby improving accuracy. This utility model has a simple structure, small size, and low cost, and is worthy of widespread promotion and use. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of an optical-magnetic combined encoder provided for an embodiment of this utility model;

[0017] Figure 2 An exploded view of an optical-magnetic combined encoder provided for an embodiment of this utility model;

[0018] Figure 3 A three-dimensional structural diagram of the optical encoder structure in an optical-magnetic combined encoder provided for an embodiment of this utility model;

[0019] Figure 4 An exploded view of the optical encoder structure in an optical-magnetic combined encoder provided in this embodiment of the present invention;

[0020] Figure 5 A three-dimensional structural diagram of the magnetic encoder structure in an optical-magnetic combined encoder provided for an embodiment of this utility model;

[0021] Figure 6 An exploded view of the magnetic encoder structure in an optical-magnetic combined encoder provided for an embodiment of this utility model;

[0022] Figure 7 This is a three-dimensional structural diagram of the cover in an optical-magnetic combined encoder provided for an embodiment of the present utility model.

[0023] In the diagram: 1. Optical encoder structure; 11. Code disk assembly; 111. Code disk; 112. Code disk base shaft; 113. Light source; 12. Optical signal processing unit; 13. First positioning assembly; 131. End cover; 132. First bearing; 2. Magnetic encoder structure; 21. Gear assembly; 211. Sun gear assembly; 2111. Sun gear; 2112. First magnet; 2113. First shielding sleeve; 212. Planetary gear assembly; 2121. Planetary gear; 2122. Second magnet; 2123. Second shielding sleeve; 2124. Planetary gear bearing; 22. Magnetic signal processing unit; 23. Second positioning assembly; 231. Cover; 232. Second bearing; 233. Positioning column; 3. Transmission structure; 4. Outer shell. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be clarified that the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," and "horizontal," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are merely for the convenience of describing this utility model. They do not imply that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example

[0027] This utility model provides an optical-magnetic combined encoder, see [link to documentation]. Figures 1 to 7 It includes an optical encoder structure 1, a magnetic encoder structure 2, and a transmission structure 3. The transmission structure 3 is connected to the optical encoder structure 1, and the optical encoder structure 1 is connected to the magnetic encoder 2. In use, the transmission structure 3 drives the optical encoder structure 1 to operate and convert the optical signal into a pulse signal. At the same time, the optical encoder structure 1 drives the magnetic encoder structure 2 to operate and convert the magnetic signal into a pulse signal.

[0028] By adopting the above solution, this utility model connects one end of the optical encoder structure 1 to the transmission structure 3 and the other end to the magnetic encoder structure 2, enabling the optical encoder structure 1 and the magnetic encoder structure 2 to convert signals simultaneously, thereby improving accuracy. This utility model has a simple structure, small size, and low cost, and is worthy of widespread promotion and use.

[0029] See Figures 2 to 4 In a specific implementation of this utility model embodiment, the optical encoder structure 1 further includes a code disk assembly 11, an optical signal processing unit 12, and a first positioning component 13. The code disk assembly 11 and the optical signal processing unit 12 are disposed within the first positioning component 13. The code disk assembly 11 is used to convert the rotational motion transmitted by the transmission structure 3 into optical signals. The optical signal processing unit 12 is used for signal processing; it can identify the optical signals sent by the code disk assembly 11 and convert the optical signals into pulse signals. The first positioning component 13 is used to position and fix the code disk assembly 11.

[0030] In a specific implementation of this utility model embodiment, the code disk assembly 11 further includes a code disk 111, a code disk mounting shaft 112, and a light source 113. The code disk 111 is sleeved on the code disk mounting shaft 112 and connected to the light source 113. One end of the code disk mounting shaft 112 is connected to the transmission structure 3, and the other end is connected to the magnetic encoder structure 2. The code disk 111 is used to convert the rotational motion signal transmitted by the transmission structure 3 into an optical signal, thereby enabling the light source 113 to transmit the optical signal to the optical signal processing unit 12. The code disk mounting shaft 112 is used to fix the code disk 111 and transmit the rotational motion signal to the magnetic encoder structure 2. The light source 113 is used to provide light, that is, when the light source 113 illuminates the code disk 111, the code disk 111 identifies the optical signal corresponding to the current rotation angle and rotational displacement, thereby the optical signal processing unit 12 converts the optical signal into a pulse signal.

[0031] Furthermore, in this embodiment of the invention, the light source 113 is an LED lamp.

[0032] See Figures 2 to 4 In a specific implementation of this utility model embodiment, the first positioning component 13 further includes an end cap 131 and a first bearing 132. The code disk 111, code disk seat shaft 112, optical signal processing component 12, light source 113, and first bearing 132 are all connected to the end cap 131. The code disk seat shaft 112 is connected to the transmission structure 3 through the first bearing 132. The end cap 131 is used for positioning and fixing the various components. The first bearing 132 is a supporting and fixing shaft, which can ensure the stable rotation of the code disk seat shaft 112 and the transmission structure 3.

[0033] Furthermore, in this embodiment of the present invention, the optical signal processing component 12, the code disk 111, and the first bearing 132 are sequentially sleeved on the code disk seat shaft 112.

[0034] In a specific implementation of this utility model embodiment, the optical signal processing unit 12 is an optical coding PCB board, which is used for signal processing, identifying the optical signals emitted by the code disk 111 and converting them into pulse signals.

[0035] See Figure 2 , Figure 5 as well as Figure 6In a specific implementation of this utility model embodiment, the magnetic encoder structure 2 further includes a gear assembly 21, a magnetic signal processing unit 22, and a second positioning component 23. The gear assembly 21 is connected to the magnetic signal processing unit 22 via the second positioning component 23; and the gear assembly 21 is also connected to the code disk base shaft 112. The gear assembly 21 is used to receive the rotational motion transmitted by the code disk base shaft 112, and when the gear assembly 21 rotates, it is also used to provide a magnetic signal. The magnetic signal processing unit 22 is used for signal processing; it can identify the magnetic signal provided by the gear assembly 21 and convert the signal into a pulse signal. The second positioning component 23 is used to position the gear assembly 21 and the magnetic signal processing unit 22.

[0036] In a specific implementation of this embodiment, the gear assembly 21 further includes a sun gear assembly 211 and a plurality of planet gear assemblies 212, with the sun gear assembly 211 and the plurality of planet gear assemblies 212 connected in cooperation; and the sun gear assembly 211 is also connected to the encoder base shaft 112. The sun gear assembly 211 is used to drive the planet gear assemblies 212 to rotate, and is also used to provide magnetic signals to the magnetic signal processing unit 22. The planet gear assemblies 212 are used to provide magnetic signals to the magnetic signal processing unit 22.

[0037] See Figure 6 In a specific implementation of this utility model embodiment, the sun gear assembly 211 further includes a sun gear 2111, a first magnet 2112, and a first shielding sleeve 2113. The sun gear 2111 is connected to the code disk base shaft 112. The first magnet 2112 and the first shielding sleeve 2113 are both disposed on the sun gear 2111, and the first shielding sleeve 2113 is sleeved on the first magnet 2112. In use, the code disk base shaft 112 drives the sun gear 2111 to rotate, causing the first magnet 2112 to transmit magnetic signals to the magnetic signal processing unit 22. The axle of the sun gear 2111 is fixedly connected to the code disk base shaft 112, so that the sun gear 2111 rotates with the code disk base shaft 112; at the same time, the sun gear 2111 also drives the planetary gear assembly 212 to rotate. The sun gear 2111 is also used to drive the first magnet 2112 to rotate, so that the first magnet 2112 generates magnetic signals when rotating. The first shielding sleeve 2113 is used to prevent the first magnet 2112 from being subjected to other electromagnetic interference.

[0038] See Figure 6In a specific implementation of this utility model embodiment, the planetary gear assembly 212 further includes a planetary gear 2121, a second magnet 2122, a second shielding sleeve 2123, and a planetary gear bearing 2124. The planetary gear 2121 is connected to the sun gear 2111. The second magnet 2122 and the second shielding sleeve 2123 are both disposed on the planetary gear 2121, with the second shielding sleeve 2123 fitted onto the second magnet 2122. The planetary gear 2121 is connected to the second positioning assembly 23 via the planetary gear bearing 2124. In use, the sun gear 2111 drives the planetary gear 2121 to rotate, causing the second magnet 2122 to transmit a magnetic signal to the magnetic signal processing unit 22. The planetary gear 2121 drives the second magnet 2122 to rotate. The second magnet 2122 generates a magnetic signal when rotating, providing a magnetic signal to the magnetic signal processing unit 22. The second shielding sleeve 2123 is used to prevent the second magnet 2122 from being interfered with by other electromagnetic interference. The planetary gear bearing 2124 is used to fix the shaft of the planetary gear 2121 so that the planetary gear 2121 will not move.

[0039] Furthermore, in this embodiment of the present invention, the number of planetary gear assemblies 212 is three.

[0040] See Figure 6 and Figure 7 In a specific implementation of this utility model embodiment, the second positioning component 23 further includes a cover 231, a second bearing 232, and several positioning posts 233. The cover 231 is sleeved on the first positioning component 13, and the second bearing 232 and several positioning posts 233 are all disposed inside the cover 231. The sun gear 2111 is connected to the code disk seat shaft 112 through the second bearing 232; the planetary gear 2121 is connected to the cover 231 through the planetary gear bearing 244. The cover 231 is used to position the planetary gear 2121 and can also fix the optical encoder structure 1. The second bearing 232 can ensure the stability of the rotation of the sun gear 2111. The positioning posts 233 are used to position the magnetic signal processing component 22.

[0041] Furthermore, in this embodiment of the invention, the number of positioning posts 233 is three.

[0042] In a specific implementation of this utility model embodiment, the cover 231 is further provided with a hole for inserting the positioning post 233.

[0043] In a specific implementation of this utility model embodiment, the cover 231 is further provided with holes for inserting the planetary gear bearing 2124.

[0044] In a specific implementation of this utility model embodiment, the magnetic signal processing component 22 is a magnetic braided PCB board, which is used for signal processing to identify the magnetic field change signals generated when the first magnet 2112 and the second magnet 2122 rotate, and convert them into pulse signals.

[0045] See Figure 1 and Figure 2 In a specific implementation of this utility model embodiment, the optical-magnetic combined encoder further includes a housing 4, within which the optical encoder structure 1, the magnetic encoder structure 2, and the transmission structure 3 are all housed. The housing 4 provides mechanical protection for the optical encoder structure 1 and the magnetic encoder structure 2; it also serves a sealing function.

[0046] See Figure 1 In a specific implementation of this utility model embodiment, a gland is further provided on the outer shell 4 for waterproofing.

[0047] See Figure 1 In the specific implementation process of this utility model embodiment, a fixed wire end is further provided on the outer shell 4, and the pulse signals output by the optical braided PCB board and the magnetic braided PCB board are transmitted to the fixed wire end for further processing.

[0048] The working process of the optical-magnetic combined encoder provided in this embodiment of the utility model is as follows:

[0049] See Figures 1 to 6 First, the transmission structure 3 drives the code disk holder shaft 112 to rotate, which in turn drives the code disk 111 to rotate. Simultaneously, the light source 113 illuminates the code disk 111. The code disk 111 identifies the optical signal corresponding to the current rotation angle and displacement, and the optical signal processing unit 12 converts this optical signal into a pulse signal. Simultaneously, the code disk holder shaft 112 drives the sun gear 2111 to rotate; the sun gear 2111 drives the three planetary gears 2121 to rotate, causing the first magnet 2112 and the second magnet 2122 to begin rotating and generate a magnetic field change signal. The magnetic signal processing unit 22 receives the magnetic signal and converts it into a pulse signal. Finally, the pulse signals output by the optical signal processing unit 12 and the magnetic signal processing unit 22 are connected to an external device via a fixed wire, completing the signal conversion and transmission process.

[0050] In summary, this invention connects one end of the optical encoder structure 1 to the transmission structure 3 and the other end to the magnetic encoder structure 2, enabling the optical encoder structure 1 and the magnetic encoder structure 2 to convert signals simultaneously, thus improving accuracy. Furthermore, this invention simplifies the product structure by placing the magnetic encoder structure 2 above the optical encoder structure 1. The invention also improves accuracy by connecting the sun gear assembly 211 and the planetary gear assembly 212 together, causing a change in the magnetic field and generating a magnetic signal. This invention is simple in structure, small in size, and low in cost, making it worthy of widespread promotion and use.

[0051] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An optical-magnetic combined encoder, characterized in that, It includes an optical encoder structure (1), a magnetic encoder structure (2), and a transmission structure (3). The transmission structure (3) is connected to the optical encoder structure (1), and the optical encoder structure (1) is connected to the magnetic encoder structure (2). In use, the transmission structure (3) drives the optical encoder structure (1) to operate and convert the optical signal into a pulse signal. At the same time, the optical encoder structure (1) drives the magnetic encoder structure (2) to operate and convert the magnetic signal into a pulse signal.

2. The optical-magnetic combined encoder according to claim 1, characterized in that, The optical encoder structure (1) includes a code disk assembly (11), an optical signal processing unit (12), and a first positioning component (13), wherein the code disk assembly (11) and the optical signal processing unit (12) are disposed within the first positioning component (13).

3. The optical-magnetic combined encoder according to claim 2, characterized in that, The code disk assembly (11) includes a code disk (111), a code disk base shaft (112), and a light source (113). The code disk (111) is sleeved on the code disk base shaft (112), and the code disk (111) is connected to the light source (113). One end of the code disk base shaft (112) is connected to the transmission structure (3), and the other end is connected to the magnetic encoder structure (2).

4. The optical-magnetic combined encoder according to claim 3, characterized in that, The first positioning component (13) includes an end cap (131) and a first bearing (132). The code disk (111), the code disk seat shaft (112), the optical signal processing component (12), the light source (113), and the first bearing (132) are all connected to the end cap (131). The code disk seat shaft (112) is connected to the transmission structure (3) through the first bearing (132).

5. The optical-magnetic combined encoder according to claim 3, characterized in that, The magnetic encoder structure (2) includes a gear assembly (21), a magnetic signal processing unit (22), and a second positioning component (23). The gear assembly (21) is connected to the magnetic signal processing unit (22) through the second positioning component (23); and the gear assembly (21) is also connected to the code disk base shaft (112).

6. The optical-magnetic combined encoder according to claim 5, characterized in that, The gear assembly (21) includes a sun gear assembly (211) and a plurality of planet gear assemblies (212), wherein the sun gear assembly (211) is connected to the plurality of planet gear assemblies (212); and the sun gear assembly (211) is also connected to the encoder base shaft (112).

7. The optical-magnetic combined encoder according to claim 6, characterized in that, The sun gear assembly (211) includes a sun gear (2111), a first magnet (2112), and a first shielding sleeve (2113). The sun gear (2111) is connected to the code disk base shaft (112). The first magnet (2112) and the first shielding sleeve (2113) are both disposed on the sun gear (2111), and the first shielding sleeve (2113) is sleeved on the first magnet (2112). In use, the code disk base shaft (112) drives the sun gear (2111) to rotate, so that the first magnet (2112) transmits the magnetic signal to the magnetic signal processing unit (22).

8. The optical-magnetic combined encoder according to claim 7, characterized in that, The planetary gear assembly (212) includes a planetary gear (2121), a second magnet (2122), a second shielding sleeve (2123), and a planetary gear bearing (2124). The planetary gear (2121) is connected to the sun gear (2111). The second magnet (2122) and the second shielding sleeve (2123) are both disposed on the planetary gear (2121), and the second shielding sleeve (2123) is sleeved on the second magnet (2122). The planetary gear (2121) is connected to the second positioning assembly (23) through the planetary gear bearing (2124). In use, the sun gear (2111) drives the planetary gear (2121) to rotate, so that the second magnet (2122) transmits the magnetic signal to the magnetic signal processing unit (22).

9. A photomagnetic combined encoder according to claim 8, characterized in that, The second positioning component (23) includes a cover (231), a second bearing (232), and a plurality of positioning posts (233). The cover (231) is sleeved on the first positioning component (13). The second bearing (232) and the plurality of positioning posts (233) are all disposed inside the cover (231). The sun gear (2111) is connected to the encoder base shaft (112) through the second bearing (232). The planetary gear (2121) is connected to the cover (231) through the planetary gear bearing (2124).

10. A photomagnetic combined encoder according to any one of claims 1-9, characterized in that, The optical-magnetic combined encoder also includes a housing (4), and the optical encoder structure (1), the magnetic encoder structure (2) and the transmission structure (3) are all disposed inside the housing (4).

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