Photoelectric encoder and automation equipment

Abstract

The utility model relates to the technical field of sensors. In view of the problem that a photoelectric encoder in the prior art is not suitable for an application scene with a relatively small installation space, the utility model provides a photoelectric encoder and automation equipment. The photoelectric encoder comprises a shell which comprises an accommodating cavity, a first mounting surface, a second mounting surface and a stepped groove; the first mounting surface and the second mounting surface are oppositely arranged along the axial direction of the shell; a first opening communicated with the accommodating cavity is formed in the first mounting surface, and a second opening communicated with the accommodating cavity is formed in the second mounting surface; the stepped groove is formed in the first mounting surface and located on one side of the first opening; the rotating shaft is positioned in the accommodating cavity and is rotationally connected with the shell; the code disc is connected with the rotating shaft; the circuit board is arranged at the second opening; the photosensitive chip is arranged on the circuit board and is opposite to the code disc; and the connecting elastic sheet is at least partially arranged in the stepped groove and is connected with the shell. The photoelectric encoder is small in overall thickness and can adapt to an application environment with a small installation space.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a photoelectric encoder and automation equipment. Background Art

[0002] Photoelectric encoder is a device that compiles and converts signals (such as bit streams) or data into signal forms that can be used for communication, transmission and storage. The encoder converts angular displacement or linear displacement into electrical signals. The former is called a code disk and the latter is called a code ruler. According to the readout method, encoders can be divided into contact and non-contact types; according to the working principle, encoders can be divided into incremental and absolute types. Incremental encoders convert displacement into periodic electrical signals, and then convert this electrical signal into counting pulses, and the number of pulses is used to indicate the size of the displacement. Each position of the absolute encoder corresponds to a certain digital code, so its indication is only related to the starting and ending positions of the measurement, but not to the intermediate process of the measurement.

[0003] In related technologies, the structure of the photoelectric encoder places the three main components, namely the light source, the code disk, and the sensor component, inside a shell. The encoder has a large thickness and volume and is not suitable for application scenarios with a small installation space. Utility Model Content

[0004] In order to solve the problem that the photoelectric encoder in the related art is not suitable for application scenarios with small installation space;

[0005] The first aspect of the present application is to provide a photoelectric encoder;

[0006] A second aspect of the present application is to provide an automation device.

[0007] In view of this, according to the first aspect of the present application, a photoelectric encoder is proposed, including: a shell, which is hollow inside and has a accommodating cavity; the shell includes a first mounting surface, a second mounting surface and a stepped groove; the first mounting surface and the second mounting surface are arranged opposite to each other along the axial direction of the shell; a first opening connected to the accommodating cavity is provided on the first mounting surface, and a second opening connected to the accommodating cavity is provided on the second mounting surface; the stepped groove is arranged on the first mounting surface and is located on one side of the first opening; a rotating shaft is located in the accommodating cavity and is rotatably connected to the shell; a code disk is arranged in the accommodating cavity and is connected to the rotating shaft; a circuit board is arranged at the second opening to block the second opening; a photosensitive chip is arranged on the circuit board and is arranged opposite to the code disk; a connecting spring is at least partially arranged in the stepped groove and connected to the shell; the connecting spring includes: a main body, which is connected to the step end face of the stepped groove, a bending portion, which is arranged on both sides of the main body; the bending portion is bent in a direction away from the second opening; and a connecting portion is connected to the bending portion.

[0008] In the above technical solution, a stepped groove is provided on the first mounting surface of the shell, that is, an upwardly concave area is designed on the bottom surface of the shell, thereby providing an installation and deformation space for the connecting spring clip, which helps to reduce the overall height of the photoelectric encoder to adapt to the application environment with a smaller installation space; finally, the shell is supported by the connecting spring clip, and when it is vibrated, due to its elastic characteristics, it can absorb the vibration energy from the shell or other components, thereby reducing the vibration intensity of the shell and protecting sensitive components such as the photosensitive chip in the shell from vibration damage, thereby improving the accuracy and service life of the photoelectric encoder.

[0009] In practical applications, by designing the bending portion, necessary space intervals can be provided for the connecting springs and other components to avoid interference, thereby ensuring that the connecting springs can work normally.

[0010] In some technical solutions, the connecting portion is optionally provided with a through slot, which, as an auxiliary structure for installation or positioning, can cooperate with the fastener during actual installation to ensure that the connecting spring piece can be stably installed at a predetermined position.

[0011] In some technical solutions, optionally, a hollow groove extending along the contour of the bent portion is provided on the bent portion, so that the connecting spring sheet can produce a greater deformation when subjected to external force, thereby helping to reduce the impact of vibration on the connecting spring sheet.

[0012] In some technical solutions, optionally, the connecting spring and the shell are detachably connected.

[0013] In the above technical solution, the detachable connection allows the connecting spring to be easily removed from the shell when maintenance, inspection or replacement is required, thereby greatly reducing maintenance costs; at the same time, different connecting springs can be selected for replacement according to different application scenarios, which is more practical.

[0014] In some technical solutions, optionally, the connecting portion extends outward in the radial direction of the shell and extends beyond the boundary of the shell, or the connecting portion does not extend beyond the boundary of the shell in the radial direction.

[0015] In the above technical solution, the connecting portion extending out of the housing provides a larger operating space for installation, so that interference with the housing can be avoided during installation, making it easier to connect with other components, thereby improving the efficiency and accuracy of the connection. The connecting portion may not extend out of the boundary of the housing. That is, the entire connecting spring is completely located in the stepped groove, so that the entire structure is more compact and more suitable for application environments with limited space.

[0016] In some technical solutions, optionally, a fixing hole is provided on the second mounting surface, and the fixing hole passes through the housing. In this way, during actual installation, the fixing hole can cooperate with the fastener to connect the housing and other components together, thereby helping to improve the convenience of installation.

[0017] In some technical solutions, optionally, the photoelectric encoder further includes a light source assembly, which is disposed in the accommodating cavity. The light source assembly can provide a stable light source, thereby ensuring the normal operation of the circuit board and the code disc.

[0018] In some technical solutions, optionally, a mounting groove is further provided on the first mounting surface; the mounting groove is located on a side of the first opening away from the connecting spring sheet and is connected to the accommodating cavity; and the light source assembly is disposed in the mounting groove.

[0019] In the above technical solution, the light source assembly is arranged in the installation groove, and the installer can easily put the light source assembly into the installation groove and fix it, thereby simplifying the installation process.

[0020] In some technical solutions, the photoelectric encoder may further include a bearing, which is disposed between the rotating shaft and the inner wall of the accommodating cavity. In this way, the friction and wear of the rotating shaft during rotation can be reduced, and the rotating shaft can be prevented from deflecting or shaking during rotation, thereby helping to improve the performance and accuracy of the photoelectric encoder.

[0021] According to the second aspect of the present application, the present application also proposes an automation device, including the photoelectric encoder provided by any of the above technical solutions. Therefore, the automation device has all the beneficial effects of any of the above technical solutions, which will not be repeated here.

[0022] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 One of the structural schematic diagrams of the photoelectric encoder in the embodiment of the present application is shown;

[0025] Figure 2 The second structural schematic diagram of the photoelectric encoder in the embodiment of the present application is shown;

[0026] Figure 3 The third structural diagram of the photoelectric encoder in the embodiment of the present application is shown;

[0027] Figure 4A fourth structural schematic diagram of a photoelectric encoder in an embodiment of the present application is shown;

[0028] Figure 5 The fifth structural diagram of the photoelectric encoder in the embodiment of the present application is shown.

[0029] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0030] 10 photoelectric encoder; 100 housing; 110 accommodating cavity; 120 first mounting surface; 121 first opening; 122 mounting groove; 130 second mounting surface; 131 second opening; 132 fixing hole; 140 step groove; 141 step end surface; 200 rotating shaft; 300 code disk; 400 circuit board; 500 photosensitive chip; 600 connecting spring; 610 body; 620 bending part; 621 hollow groove; 630 connecting part; 631 through groove; 700 light source assembly; 800 bearing. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0033] Combine the following Figures 1 to 5 , the photoelectric encoder and automation equipment provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0034] Reference Figure 1 , Figure 2 and Figure 5 In an embodiment of the present application, a photoelectric encoder 10 is provided, and its structure includes: a housing 100, a rotating shaft 200, a code disc 300, a circuit board 400, a photosensitive chip 500 and a connecting spring 600.

[0035] Specifically, the interior of the housing 100 is hollow to form a receiving cavity 110; the housing 100 includes a first mounting surface 120, a second mounting surface 130 and a stepped groove 140. The first mounting surface 120 and the second mounting surface 130 are arranged along the axial direction of the housing 100 (eg Figure 2As shown in FIG. 1A , the first mounting surface 120 is provided with a first opening 121 communicating with the accommodating cavity 110, and the second mounting surface 130 is provided with a second opening 131 communicating with the accommodating cavity 110; the stepped groove 140 is provided on the first mounting surface 120 and is located on one side of the first opening 121.

[0036] The rotating shaft 200 is located in the accommodating cavity 110 and is rotatably connected to the housing 100. The code disk 300 is disposed in the accommodating cavity 110 and is connected to the rotating shaft 200, and can rotate with the rotating shaft 200 to generate periodic light intensity changes. The circuit board 400 is disposed at the second opening 131 to block the second opening 131. The photosensitive chip 500 is disposed on the circuit board 400 and is disposed opposite to the code disk 300 to convert light intensity changes into electrical signals. The connecting spring 600 is at least partially disposed in the stepped groove 140 and is connected to the housing 100.

[0037] In the above embodiment, by opening a stepped groove 140 on the first mounting surface 120 of the housing 100, that is, designing an upwardly concave area on the bottom surface of the housing 100, an installation and deformation space is provided for the connecting spring 600, which helps to reduce the overall height of the photoelectric encoder 10 to adapt to the application environment with a small installation space; finally, the housing 100 is supported by the connecting spring 600. When it is vibrated, due to its elastic characteristics, it can absorb the vibration energy from the housing 100 or other components, thereby reducing the vibration intensity of the housing 100 and protecting sensitive components such as the photosensitive chip 500 in the housing 100 from vibration damage, thereby improving the accuracy and service life of the photoelectric encoder 10; at the same time, during the installation process of the photoelectric encoder 10, due to factors such as deviation, the connection between the photoelectric encoder 10 and the device under test may not be accurate enough. By compensating the installation deviation through the elasticity of the connecting spring 600, the photoelectric encoder 10 can be better supported, so that the photoelectric encoder 10 can better adapt to different installation conditions and working environments, thereby improving the adaptability of the photoelectric encoder 10.

[0038] Reference Figure 1 and Figure 3 In some embodiments, the connecting spring 600 includes a body 610, a bent portion 620 and a connecting portion 630. The body 610 and the step end surface 141 of the step groove 140 are attached and connected; the bent portion 620 is arranged on both sides of the body 610, and the bent portion 620 is bent in a direction away from the second opening 131; and the connecting portion 630 is connected to the bent portion 620.

[0039] In practical applications, by designing the bent portion 620 , necessary space can be provided for the connecting spring 600 and other components to avoid interference, thereby ensuring that the connecting spring 600 can work normally.

[0040] Reference Figure 1 and Figure 2 In some embodiments, the connecting portion 630 is arranged along the radial direction of the housing 100 ( Figure 2 The connecting portion 630 extending out of the housing 100 provides a larger operating space for installation, so that during installation, interference with the housing 100 can be avoided, making it easier to connect with other components, thereby improving the efficiency and accuracy of the connection.

[0041] Reference Figure 3 and Figure 4 It is understandable that the connecting portion 630 may not extend out of the boundary of the housing 100, that is, the entire connecting spring 600 is completely located in the stepped groove 140. In this way, the entire structure is more compact, reducing the space required for the installation of the photoelectric encoder 10, and is more suitable for application environments with limited space.

[0042] Reference Figure 1 In some embodiments, a through slot 631 is provided on the connecting portion 630. The through slot 631 is an auxiliary structure for installation or positioning, and can cooperate with a fastener (such as a pin, etc.) during actual installation to ensure that the connecting spring 600 can be stably installed at a predetermined position.

[0043] In some embodiments, the bending portion 620 is provided with a hollow groove 621 extending along the contour of the bending portion 620. In this way, the connecting spring piece 600 can produce a greater deformation when subjected to external force, thereby helping to reduce the impact of vibration on the connecting spring piece 600.

[0044] In some embodiments, the connection spring 600 and the housing 100 are detachably connected. The detachable connection allows the connection spring 600 to be easily removed from the housing 100 when maintenance, inspection or replacement is required, thereby greatly reducing maintenance costs; at the same time, different connection springs 600 can be selected and replaced according to different application scenarios, which is more practical.

[0045] Specifically, the step end surface 141 of the step groove 140 and the body 610 are provided with a mounting hole suitable for communication, and a screw is set in the mounting hole to connect the step end surface 141 of the step groove 140 and the body 610. The installation process of the screw connection is simple, which helps to improve the installation efficiency, and can also provide a more solid fixing effect to ensure the stability of the photoelectric encoder 10 during use. It is understandable that in actual use, other fastening structures such as rivets and pins can also be used for connection, and this embodiment is not limited to this.

[0046] In some embodiments, a fixing hole 132 is provided on the second mounting surface 130; the fixing hole 132 passes through the housing 100. During actual installation, the fixing hole 132 can cooperate with fasteners (such as bolts, screws, etc.) to connect the housing 100 and other components together, thereby helping to improve the convenience of installation.

[0047] Reference Figure 1 and Figure 5 In some embodiments, the photoelectric encoder 10 further includes a light source assembly 700; the light source assembly 700 is disposed in the accommodating cavity 110 and is disposed opposite to the photosensitive chip 500, and is respectively located on both sides of the code disk 300. The light source assembly 700 can provide a stable light source, thereby ensuring the normal operation of the photoelectric encoder 10.

[0048] In the above embodiment, the first mounting surface 120 is further provided with a mounting groove 122 ; the mounting groove 122 is located on the side of the first opening 121 away from the connecting spring 600 and connected to the accommodating cavity 110 . The light source assembly 700 is disposed in the mounting groove 122 .

[0049] In actual applications, the light source assembly 700 is disposed in the mounting groove 122 , and the installer can easily put the light source assembly 700 into the mounting groove 122 and fix it, thereby simplifying the installation process.

[0050] For example, the light source assembly 700 may be fixed in the mounting groove 122 by means of screws, buckles, rivets, etc.

[0051] In some embodiments, the photoelectric encoder 10 further includes a bearing 800, which is disposed between the rotating shaft 200 and the inner wall of the accommodating cavity 110. In this way, the friction and wear of the rotating shaft 200 during the rotation process can be reduced, and the rotating shaft 200 can be prevented from deflecting or shaking during the rotation process, thereby helping to improve the performance and accuracy of the photoelectric encoder 10.

[0052] In some embodiments, the present application further provides an automation device, which includes the photoelectric encoder 10 provided in any of the above embodiments. Therefore, the automation device has all the beneficial effects of any of the above embodiments, which will not be described in detail here.

[0053] It should be clarified that in the claims, specification and drawings of the present application, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, which is only for the purpose of more conveniently describing the present application and making the description process easier, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limitations on the present application; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0054] In the claims, specification and drawings of the present application, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the claims, specification and drawings of the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A photoelectric encoder, characterized in that: include: A shell, wherein the interior is hollow and has an accommodating cavity; the shell comprises a first mounting surface, a second mounting surface and a stepped groove; the first mounting surface and the second mounting surface are arranged opposite to each other along the axial direction of the shell; the first mounting surface is provided with a first opening communicating with the accommodating cavity, and the second mounting surface is provided with a second opening communicating with the accommodating cavity; the stepped groove is provided on the first mounting surface and is located on one side of the first opening; A rotating shaft, located in the accommodating cavity and rotatably connected to the shell; A code disc, disposed in the accommodating cavity and connected to the rotating shaft; A circuit board is disposed at the second opening to block the second opening; A photosensitive chip is arranged on the circuit board and is arranged opposite to the code disc; A connecting spring sheet is at least partially disposed in the stepped groove and connected to the housing; The connecting spring comprises: A body connected to the step end surface of the step groove; A bending portion is arranged on both sides of the body; the bending portion is bent in a direction away from the second opening; The connecting portion is connected to the bending portion.

2. The photoelectric encoder according to claim 1, characterized in that: The connecting portion is provided with a through groove.

3. The photoelectric encoder according to claim 1, characterized in that: The bending portion is provided with a hollow groove extending along the contour of the bending portion.

4. The photoelectric encoder according to claim 1, characterized in that: The connecting portion extends outwardly in the radial direction of the shell and protrudes beyond the boundary of the shell, or the connecting portion does not protrude beyond the boundary of the shell in the radial direction.

5. The photoelectric encoder according to any one of claims 1 to 4, characterized in that: The connecting spring piece and the shell are detachably connected.

6. The photoelectric encoder according to claim 1, characterized in that: The second mounting surface is provided with a fixing hole, and the fixing hole passes through the shell.

7. The photoelectric encoder according to claim 1, characterized in that: It also includes a light source component; the light source component is arranged in the accommodating cavity.

8. The photoelectric encoder according to claim 7, characterized in that: The first mounting surface is also provided with a mounting groove; the mounting groove is located on a side of the first opening away from the connecting elastic sheet and is connected to the accommodating cavity; The light source assembly is arranged in the mounting groove.

9. The photoelectric encoder according to claim 1, characterized in that: A bearing is also included; the bearing is arranged between the rotating shaft and the inner wall of the accommodating cavity.

10. An automated device, characterized in that: Comprising the photoelectric encoder as claimed in any one of claims 1 to 9.

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