Split type encoder without bearing

Abstract

The utility model provides a split type encoder without a bearing, comprising a main body, the main body is provided with a through hole, a cavity and a mounting channel, and any one of the cavity and the mounting channel is communicated with the through hole; the code disc is arranged in the cavity; the first end of the code disc shaft is connected with the code disc, the second end of the code disc shaft is located in the through hole, and the code disc shaft is provided with a matching opening; and the preassembling piece is detachably arranged in the mounting channel, the preassembling piece is provided with a limiting part, and based on the fact that the preassembling piece is arranged in the mounting channel, one part of the preassembling piece is inserted into the matching opening, and the outer wall of the code disc shaft is matched with the limiting part. According to the split type encoder, accurate positioning of the code disc in the cavity is achieved, the problem that the code disc or the photocell is damaged due to interference between the code disc and the photocell and interference between the code disc and the circuit board can be effectively avoided, and the performance of the split type encoder is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of split-type encoders, in particular to a bearingless split-type encoder. Background Art

[0002] At present, the encoder is a sensor device that collects, compiles and converts signals or data into signals that can be communicated, transmitted and stored. It is widely used in servo motors, robots, smart hardware and other fields. It is a detection and feedback unit used for real-time feedback of status such as position, speed and angle.

[0003] However, the split encoder in the related art has problems such as complex installation process, high requirements for the installation environment, high requirements for the accuracy of the installation part, and easy damage to the optical components. Utility Model Content

[0004] The embodiments of the present utility model are intended to solve at least one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of an embodiment of the present invention provides a bearingless split encoder.

[0006] In view of this, according to the first aspect of an embodiment of the present utility model, a bearingless split encoder is provided, the split encoder comprising: a main body, the main body being provided with a through hole, a cavity and a mounting channel, either of the cavity and the mounting channel being connected to the through hole; a code disk being arranged in the cavity; a code disk shaft, the first end of the code disk shaft being connected to the code disk, the second end of the code disk shaft being located in the through hole, the code disk shaft being provided with a mating opening; a pre-installed part being detachably arranged in the mounting channel, the pre-installed part being provided with a limiting portion, based on the pre-installed part being arranged in the mounting channel, a part of the pre-installed part being inserted into the mating opening, and the outer wall of the code disk shaft being mated with the limiting portion.

[0007] The split encoder provided by the present invention includes a main body, a code disc, a code disc shaft, and pre-assembled components. Specifically, since the encoder is a split encoder, compared to the integrated encoders in the related art, the bearing between the main body and the code disc shaft is eliminated, reducing the thickness of the two bearings and the size of the fixed structure. This meets the requirements of reducing volume and miniaturization, reduces costs, and is suitable for applications with limited installation space. Furthermore, the lack of bearings can also extend the service life of the encoder.

[0008] The code disc is connected to the code disc shaft, and optionally, the code disc and the code disc shaft are connected by an adhesive. The code disc shaft is provided with a mating opening. When the pre-assembled component is inserted into the installation channel, part of the pre-assembled component can be inserted into the mating opening, and the outer wall of the code disc shaft cooperates with the limiting portion of the pre-assembled component, thereby limiting the code disc shaft in the axial and circumferential directions, thereby achieving precise positioning of the code disc in the cavity, effectively avoiding interference between the code disc and the photocell, or between the code disc and the circuit board, which could cause damage to the code disc or the photocell, thereby ensuring the performance of the split encoder.

[0009] At the same time, the use of pre-assembled components to pre-position the encoder shaft effectively reduces the machining accuracy requirements for each component, as well as the requirements for the installation environment, installers, and tools. This reduces installation complexity and allows users to quickly install on-site, which helps reduce the production cost of split encoders. In addition, the outer wall of the encoder shaft cooperates with the stopper, allowing users to sense when the pre-assembled components are in place, which helps improve the installation efficiency of the split encoder.

[0010] It is understandable that when assembling the split encoder and the motor waiting to be installed, the pre-assembled parts are first removed from the main body, and the fasteners are passed through the installation channel into the mating mouth to achieve the mating connection between the code disk shaft and the part to be installed (motor shaft).

[0011] Optionally, there are multiple installation channels, which are spaced apart along the circumference of the code disc axis, and there are multiple pre-assembled components, which are detachably disposed in the multiple installation channels. Optionally, there are 2 or 3 installation channels.

[0012] Optionally, the limiting portion includes a limiting surface or a limiting groove.

[0013] In addition, the bearingless split encoder provided by the above technical solution of the utility model also has the following additional technical features:

[0014] In some technical solutions, optionally, the limiting portion includes a limiting surface, and based on a portion of the preassembled component being inserted into the fitting opening, the outer wall of the code disk shaft abuts against the limiting surface.

[0015] In this technical solution, the limiting portion is defined to include a limiting surface. Specifically, when the pre-installed part is inserted into the installation channel, part of the pre-installed part can be inserted into the mating opening, and the outer wall of the code disk shaft is against the limiting surface. Therefore, in addition to the axial and circumferential directions, the code disk shaft can also be limited in the radial direction, which is conducive to further realizing the precise positioning of the code disk in the cavity.

[0016] Moreover, it is understandable that when installing the pre-assembled parts, when the outer wall of the code disk shaft abuts against the limit surface, it means that the pre-assembled parts have been installed in place and the next pre-assembled parts can be installed, which is conducive to improving installation efficiency.

[0017] In some technical solutions, optionally, the pre-assembled part includes a plug-in part and a mating part, wherein the mating part is connected to the plug-in part, based on the plug-in part being located in the installation channel, at least a portion of the mating part is inserted into the mating opening, and the limiting surface is provided on the plug-in part or the mating part.

[0018] This technical solution defines the preassembled component as comprising a plug-in portion and a mating portion. Specifically, the plug-in portion is positioned within the installation channel, and at least a portion of the mating portion is inserted into the mating opening, thereby achieving pre-positioning of the preassembled component and the code disk shaft. The limiting surface is provided on the plug-in portion. Alternatively, the limiting surface is provided on the mating portion. The specific setting can be determined based on actual needs.

[0019] Optionally, the plug-in portion and the mating portion are an integrated structure.

[0020] In some technical solutions, optionally, based on the position-limiting surface being provided on the matching portion, at least a portion of the position-limiting surface includes an inclined surface.

[0021] In this technical solution, the limiting surface is limited to be set on the mating part. Specifically, at least part of the limiting surface is an inclined surface. On the one hand, when the mating part is inserted into the mating opening to pre-position the code disk shaft, the inclined surface can play a guiding role, which facilitates the rapid insertion of the mating part into the mating opening, which is beneficial to improving the installation efficiency of the split encoder.

[0022] On the other hand, the outer wall of the code disc shaft abuts against the inclined surface, thereby achieving precise positioning of the code disc in the cavity. This can effectively avoid interference between the code disc and the photocell, as well as between the code disc and the circuit board, which may cause damage to the code disc or photocell, thereby ensuring the performance of the split encoder.

[0023] In some technical solutions, optionally, based on the limiting surface being provided on the plug-in portion, the outer wall of the code disc shaft abuts against the limiting surface along the radial direction of the code disc shaft.

[0024] In this technical solution, the limiting surface is set on the plug-in part. Specifically, when the mating part is inserted into the mating opening, the outer wall of the code disk shaft is against the limiting surface along the radial direction of the code disk shaft. Therefore, in addition to the axial and circumferential directions, the code disk shaft can also be limited in the radial direction, which is conducive to further improving the positioning accuracy of the code disk in the cavity and improving the detection accuracy of the split encoder.

[0025] In some technical solutions, optionally, the diameter of the plug-in portion is larger than the diameter of the fitting portion, and the end surface of the plug-in portion close to one end of the code disk shaft is a limiting surface.

[0026] In this technical solution, the diameter of the plug-in part is limited to be larger than the diameter of the mating part, so that the end face of the plug-in part close to the end of the code disk shaft is formed as a limiting surface, so that when the mating part is inserted into the mating opening, the outer wall of the code disk shaft is against the limiting surface along the radial direction of the code disk shaft, thereby limiting the code disk shaft.

[0027] In some technical solutions, optionally, the outer wall of the preassembled component is provided with a first thread, and the inner wall of the installation channel is provided with a second thread, and the second thread can be matched and connected with the first thread.

[0028] In this technical solution, the pre-installed parts are limited to cooperate with the inner wall threads of the installation channel, so that the pre-installed parts can be fixed while pre-positioning the code disk shaft. During the production and factory assembly of the split encoder, the pre-installed parts are prevented from falling out of the installation channel, further avoiding the problem of product failure due to code disk displacement, and ensuring the accuracy of the split encoder.

[0029] In addition, through threaded fitting, while effectively fixing the pre-assembled parts, it also facilitates the disassembly of the pre-assembled parts, which is beneficial to further improve the installation efficiency of the split encoder.

[0030] In some technical solutions, optionally, the code disc shaft is further provided with an axial hole, which is connected to the mating port. The split encoder also includes a fastener. Based on the pre-installed part being moved out of the installation channel, the fastener is arranged in the mating port through the installation channel and partially extends into the axial hole to abut against the part to be installed.

[0031] In this technical solution, it is defined that the split encoder also includes a fastener. Specifically, the code disc shaft is further provided with an axial hole, which is connected to the mating port. It can be understood that the axial hole is used to connect the part to be installed. Optionally, the part to be installed includes a motor shaft.

[0032] When the pre-assembled part is removed from the installation channel, the fastener enters the mating opening through the installation channel, and a part of the fastener extends into the shaft hole and abuts against the part to be installed, thereby realizing the assembly between the code disk shaft and the part to be installed. When the assembly of the code disk shaft and the part to be installed is completed, the part to be installed can drive the code disk shaft to operate.

[0033] Optionally, the fastener includes a screw, and the mating opening is a threaded hole.

[0034] Optionally, the cross-sectional shape of the shaft hole is circular or D-shaped.

[0035] In some technical solutions, optionally, the main body is a metal part or a plastic part; and / or a mounting hole is provided at one end of the pre-assembled part away from the code wheel shaft.

[0036] In this technical solution, the main body is a metal part or a plastic part. Specifically, the metal main body ensures its structural strength. Compared to the related art where the main body is a plastic part, this helps prevent deformation of the split encoder during operation and ensures the performance of the split encoder. It is understood that the plastic main body helps reduce the production cost of the split encoder.

[0037] A mounting hole is provided at the end of the pre-assembled component away from the code disk shaft. The user can use the installation tool to screw the pre-assembled component in and out through the mounting hole, thereby completing the pre-positioning of the pre-assembled component on the code disk shaft.

[0038] In some technical solutions, optionally, the main body includes a body, a circuit board, a photocell and a light source, wherein the body is provided with a through hole and a mounting channel, the circuit board is provided on the body and is enclosed with the body to form a cavity, the photocell is provided on the circuit board on one side of the cavity, and there is a distance between the photocell and the code disk along the axial direction of the code disk axis; the light source is provided on the body and is located on the side of the code disk away from the photocell, and the light source is opposite to the photocell along the axial direction of the code disk axis.

[0039] In this technical solution, it is defined that the main body includes a body, a circuit board, a photovoltaic cell and a light source. Specifically, the circuit board is arranged on the body, and the circuit board and the body are enclosed to form a cavity.

[0040] Along the axial direction of the code disc axis, the photocell and the light source are respectively located on opposite sides of the code disc, and the photocell is arranged on the side of the circuit board facing the code disc, with a distance between the photocell and the code disc, and the light source is arranged on the main body.

[0041] Additional aspects and advantages of the present invention will be given in the following description, and some will become obvious from the following description, or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] Figure 1 FIG1 shows one of the structural schematic diagrams of a split encoder according to an embodiment of the present utility model;

[0044] Figure 2 The second structural diagram of the split encoder according to one embodiment of the present utility model is shown;

[0045] Figure 3 The third structural diagram of the split encoder according to one embodiment of the present utility model is shown;

[0046] Figure 4A fourth structural diagram of a split-type encoder according to an embodiment of the present utility model is shown.

[0047] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0048] 100 split encoder, 110 main body, 111 through hole, 112 cavity, 113 mounting channel, 114 second thread, 115 main body, 116 circuit board, 117 photocell, 118 light source, 120 code disk, 130 code disk shaft, 131 matching port, 132 shaft hole, 140 pre-assembled part, 141 limiting portion, 142 limiting surface, 143 plug-in portion, 144 matching portion, 145 first thread, 146 mounting hole. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0051] Refer to the following Figures 1 to 4 A bearingless split encoder 100 according to some embodiments of the present invention will be described.

[0052] In one embodiment according to the present application, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a bearingless split encoder 100 is proposed, which includes: a main body 110, the main body 110 is provided with a through hole 111, a cavity 112 and a mounting channel 113, and either the cavity 112 and the mounting channel 113 is connected to the through hole 111; a code disk 120, which is arranged in the cavity 112; a code disk shaft 130, the first end of the code disk shaft 130 is connected to the code disk 120, the second end of the code disk shaft 130 is located in the through hole 111, and the code disk shaft 130 is provided with a matching port 131; a pre-assembled part 140, which is detachably arranged in the mounting channel 113, and the pre-assembled part 140 is provided with a limiting portion 141. Based on the pre-assembled part 140 being arranged in the mounting channel 113, a part of the pre-assembled part 140 is inserted into the matching port 131, and the outer wall of the code disk shaft 130 is matched with the limiting portion 141.

[0053] The split encoder 100 provided in the embodiment of the present invention includes a main body 110, a code disc 120, a code disc shaft 130, and a pre-assembled component 140. Specifically, since the encoder is a split encoder 100, compared to the integral encoders in the related art, the bearings between the main body 110 and the code disc shaft 130 are eliminated. This reduces the thickness of the two bearings and the size of the fixed structure, meeting the requirements of reducing volume and miniaturization, reducing costs, and making it suitable for applications with limited installation space. Furthermore, the lack of bearings can also extend the service life of the encoder.

[0054] The code disc 120 is connected to the code disc shaft 130. Optionally, the code disc 120 and the code disc shaft 130 are connected by an adhesive. The code disc shaft 130 is provided with a mating opening 131. When the preassembled component 140 is inserted into the installation channel 113, part of the preassembled component 140 can be inserted into the mating opening 131, and the outer wall of the code disc shaft 130 cooperates with the limiting portion 141 of the preassembled component 140, thereby limiting the code disc shaft 130 in the axial and circumferential directions, thereby achieving precise positioning of the code disc 120 in the cavity 112. This can effectively avoid interference between the code disc 120 and the photocell 117, as well as between the code disc 120 and the circuit board 116, which may cause damage to the code disc 120 or the photocell 117, thereby ensuring the performance of the split encoder 100.

[0055] At the same time, since the pre-installed component 140 is provided to pre-position the code disc shaft 130, the machining accuracy requirements for each component, as well as the requirements for the installation environment, installers, and installation tools, can be effectively reduced, thereby reducing the complexity of installation and enabling users to quickly install on-site, which is beneficial to reducing the production cost of the split encoder 100. In addition, the outer wall of the code disc shaft 130 cooperates with the limit portion 141, allowing the user to sense that the pre-installed component 140 is in place, which is beneficial to improving the installation efficiency of the split encoder 100.

[0056] It can be understood that when assembling the split encoder 100 and the motor waiting to be installed, the pre-assembled part 140 is first removed from the main body 110, and the fastener is passed through the installation channel 113 into the mating port 131 to achieve the mating connection between the code disk shaft 130 and the part to be installed (motor shaft).

[0057] Optionally, there are multiple mounting channels 113, which are spaced apart along the circumference of the code wheel shaft 130. There are also multiple pre-assembled components 140, which are detachably disposed in the multiple mounting channels 113. Optionally, there are two or three mounting channels 113.

[0058] Optionally, the limiting portion 141 includes a limiting surface 142 or a limiting groove.

[0059] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, optionally, the limiting portion 141 includes a limiting surface 142 , and based on a portion of the preassembled component 140 being inserted into the fitting opening 131 , the outer wall of the code wheel shaft 130 abuts against the limiting surface 142 .

[0060] In this embodiment, the limiting portion 141 is defined to include a limiting surface 142. Specifically, when the pre-assembled part 140 is inserted into the installation channel 113, part of the pre-assembled part 140 can be inserted into the mating opening 131, and the outer wall of the code disc shaft 130 is against the limiting surface 142. Therefore, in addition to the axial and circumferential directions, the code disc shaft 130 can also be limited in the radial direction, which is conducive to further realizing the precise positioning of the code disc 120 in the cavity 112.

[0061] Moreover, it can be understood that when installing the pre-assembled component 140, when the outer wall of the code wheel shaft 130 abuts against the limit surface 142, it means that the pre-assembled component 140 has been installed in place and the next pre-assembled component 140 can be installed, which is conducive to improving installation efficiency.

[0062] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, optionally, the pre-assembled part 140 includes a plug-in portion 143 and a mating portion 144, wherein the mating portion 144 is connected to the plug-in portion 143, based on that the plug-in portion 143 is located in the installation channel 113, at least a portion of the mating portion 144 is inserted into the mating opening 131, and the limiting surface 142 is provided on the plug-in portion 143 or the mating portion 144.

[0063] In this embodiment, the pre-assembled component 140 is defined as comprising an inserting portion 143 and a mating portion 144. Specifically, the inserting portion 143 is positioned within the installation channel 113, and at least a portion of the mating portion 144 is inserted into the mating opening 131, thereby achieving pre-positioning of the pre-assembled component 140 with the code wheel shaft 130. A limiting surface 142 is provided on the inserting portion 143. Alternatively, the limiting surface 142 is provided on the mating portion 144. The specific configuration can be determined based on actual needs.

[0064] Optionally, the plug-in portion 143 and the mating portion 144 are an integral structure.

[0065] like Figure 3 and Figure 4 As shown, in some embodiments, optionally, based on the limiting surface 142 being provided on the matching portion 144 , at least a portion of the limiting surface 142 includes an inclined surface.

[0066] In this embodiment, the limiting surface 142 is limited to be set on the mating portion 144. Specifically, at least part of the limiting surface 142 is an inclined surface. On the one hand, when the mating portion 144 is inserted into the mating opening 131 to pre-position the code disk shaft 130, the inclined surface can play a guiding role, which facilitates the rapid insertion of the mating portion 144 into the mating opening 131, which is beneficial to improving the installation efficiency of the split encoder 100.

[0067] On the other hand, the outer wall of the code disc shaft 130 abuts against the inclined surface, thereby achieving precise positioning of the code disc 120 in the cavity 112, which can effectively avoid interference between the code disc 120 and the photocell 117, and between the code disc 120 and the circuit board 116, thereby avoiding damage to the code disc 120 or the photocell 117, thereby ensuring the performance of the split encoder 100.

[0068] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, based on the limiting surface 142 being provided on the plug-in portion 143 , along the radial direction of the code wheel shaft 130 , the outer wall of the code wheel shaft 130 abuts against the limiting surface 142 .

[0069] In this embodiment, the limiting surface 142 is limited to be set on the plug-in portion 143. Specifically, when the fitting portion 144 is inserted into the fitting port 131, along the radial direction of the code disc shaft 130, the outer wall of the code disc shaft 130 is against the limiting surface 142. Therefore, in addition to the axial and circumferential directions, the code disc shaft 130 can also be limited in the radial direction, which is beneficial to further improve the positioning accuracy of the code disc 120 in the cavity 112 and improve the detection accuracy of the split encoder 100.

[0070] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the diameter of the plug-in portion 143 is larger than the diameter of the fitting portion 144 , and the end surface of the plug-in portion 143 close to one end of the code wheel shaft 130 is the limiting surface 142 .

[0071] In this embodiment, the diameter of the plug-in portion 143 is limited to be larger than the diameter of the fitting portion 144, so that the end face of the plug-in portion 143 close to one end of the code disk shaft 130 is formed as a limiting surface 142, so that when the fitting portion 144 is inserted into the fitting opening 131, the outer wall of the code disk shaft 130 is abutted against the limiting surface 142 along the radial direction of the code disk shaft 130, thereby limiting the code disk shaft 130.

[0072] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, the outer wall of the pre-assembled component 140 is provided with a first thread 145 , and the inner wall of the installation channel 113 is provided with a second thread 114 , and the second thread 114 can be matched and connected with the first thread 145 .

[0073] In this embodiment, the pre-assembled component 140 is limited to cooperate with the inner wall thread of the installation channel 113, so that the pre-assembled component 140 can be fixed while pre-positioning the code disk shaft 130. During the production and factory assembly of the split encoder 100, the pre-assembled component 140 is prevented from escaping from the installation channel 113, further avoiding the problem of product failure due to displacement of the code disk 120, and ensuring the accuracy of the split encoder 100.

[0074] In addition, through the threaded fitting, the pre-assembled component 140 is effectively fixed while being easy to disassemble, which is beneficial to further improve the installation efficiency of the split encoder 100.

[0075] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, optionally, the code disk shaft 130 is further provided with an axial hole 132, and the axial hole 132 is connected to the mating port 131. The split encoder 100 also includes a fastener. Based on the pre-installed part 140 being moved out of the installation channel 113, the fastener is arranged in the mating port 131 through the installation channel 113, and partially extends into the axial hole 132 to abut against the part to be installed.

[0076] In this embodiment, the split encoder 100 further includes a fastener. Specifically, the code wheel shaft 130 is further provided with a shaft hole 132, which is in communication with the mating opening 131. It is understood that the shaft hole 132 is used to connect to a component to be mounted. Optionally, the component to be mounted includes a motor shaft.

[0077] When the pre-assembled part 140 is removed from the installation channel 113, the fastener enters the mating port 131 through the installation channel 113, and a part of the fastener extends into the shaft hole 132 and abuts against the part to be installed, thereby realizing the assembly between the code disc shaft 130 and the part to be installed. When the assembly of the code disc shaft 130 and the part to be installed is completed, the part to be installed can drive the code disc shaft 130 to operate.

[0078] Optionally, the fastener includes a screw, and the matching opening 131 is a threaded hole.

[0079] Optionally, the cross-sectional shape of the shaft hole 132 is circular or D-shaped.

[0080] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, optionally, the main body 110 is a metal part or a plastic part; and / or a mounting hole 146 is provided at one end of the pre-assembled part 140 away from the code wheel shaft 130 .

[0081] In this embodiment, the main body 110 is a metal component, or the main body 110 is a plastic component. Specifically, since the main body 110 is a metal component, the structural strength of the main body 110 is ensured. Compared with the related art in which the main body is set as a plastic component, this helps to prevent the split encoder 100 from deforming during operation, thereby ensuring the performance of the split encoder 100. It can be understood that when the main body 110 is a plastic component, it is helpful to reduce the production cost of the split encoder 100.

[0082] An installation hole 146 is provided at one end of the pre-assembled component 140 away from the code disk shaft 130 . The user can use an installation tool to screw the pre-assembled component 140 in and out through the installation hole 146 , thereby completing the pre-positioning of the pre-assembled component 140 on the code disk shaft 130 .

[0083] like Figure 1 and Figure 3 As shown, in some embodiments, optionally, the main body 110 includes a body 115, a circuit board 116, a photocell 117 and a light source 118, wherein the body 115 is provided with a through hole 111 and an installation channel 113, the circuit board 116 is provided on the body 115, and is enclosed with the body 115 to form a cavity 112, the photocell 117 is provided on the circuit board 116 on one side of the cavity 112, and there is a distance between the photocell 117 and the code disk 120 along the axial direction of the code disk axis 130; the light source 118 is provided on the body 115, and is located on the side of the code disk 120 away from the photocell 117, and is opposite to the photocell 117 along the axial direction of the code disk axis 130.

[0084] In this embodiment, the main body 110 is defined to include a body 115, a circuit board 116, a photocell 117, and a light source 118. Specifically, the circuit board 116 is disposed on the body 115, and the circuit board 116 and the body 115 enclose a cavity 112. Along the axial direction of the code wheel axis 130, the photocell 117 and the light source 118 are respectively located on opposite sides of the code wheel 120, and the photocell 117 is disposed on the side of the circuit board 116 facing the code wheel 120, with a spacing therebetween. The light source 118 is disposed on the main body 110.

[0085] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0086] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0087] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bearingless split encoder, characterized in that: include: a main body, the main body being provided with a through hole, a cavity and a mounting channel, wherein either the cavity or the mounting channel is in communication with the through hole; a code disk, disposed in the cavity; A code disc shaft, wherein the first end of the code disc shaft is connected to the code disc, the second end of the code disc shaft is located in the through hole, and the code disc shaft is provided with a mating opening; The pre-assembled component is detachably arranged in the installation channel. The pre-assembled component is provided with a limiting portion. Based on the pre-assembled component being arranged in the installation channel, a part of the pre-assembled component is inserted into the matching port, and the outer wall of the code disk shaft cooperates with the limiting portion.

2. The bearingless split encoder according to claim 1, characterized in that: The limiting portion includes a limiting surface, and based on a portion of the pre-assembled component being inserted into the fitting opening, the outer wall of the code disk shaft abuts against the limiting surface.

3. The bearingless split encoder according to claim 2, characterized in that: The pre-assembled parts include: Connector; The mating portion is connected to the plug-in portion. Based on the fact that the plug-in portion is located in the installation channel, at least a portion of the mating portion is inserted into the mating opening, and the limiting surface is provided on the plug-in portion or the mating portion.

4. The bearingless split encoder according to claim 3, characterized in that: Based on the fact that the limiting surface is provided on the matching portion, at least a portion of the limiting surface includes an inclined surface.

5. The bearingless split encoder according to claim 3, characterized in that: Based on the fact that the limiting surface is provided on the plug-in portion, along the radial direction of the code disc shaft, the outer wall of the code disc shaft abuts against the limiting surface.

6. The bearingless split encoder according to claim 5, characterized in that: The diameter of the plug-in portion is greater than the diameter of the matching portion, and the end surface of the plug-in portion close to one end of the code disk shaft is the limiting surface.

7. The bearingless split encoder according to any one of claims 1 to 6, characterized in that: The outer wall of the preassembled component is provided with a first thread, and the inner wall of the installation channel is provided with a second thread, and the second thread can be matched and connected with the first thread.

8. The bearingless split encoder according to any one of claims 1 to 6, characterized in that: The code disc shaft is further provided with an axial hole, the axial hole being in communication with the mating port, and the split encoder further comprises: A fastener is arranged in the matching opening through the mounting channel based on the pre-installed component being moved out of the mounting channel, and partially extends into the axial hole to abut against the component to be mounted.

9. The bearingless split encoder according to any one of claims 1 to 6, characterized in that: The main body is a metal part or a plastic part; and / or a mounting hole is provided at one end of the pre-assembled part away from the code disc shaft.

10. The bearingless split encoder according to any one of claims 1 to 6, characterized in that: The subject includes: A body, wherein the body is provided with the through hole and the mounting channel; A circuit board is provided on the body and enclosed with the body to form the cavity; A photocell is provided on one side of the circuit board located in the cavity, with a distance between the photocell and the code disc along the axial direction of the code disc axis; The light source is provided in the body and is located on a side of the code disc away from the photocell. Along the axial direction of the code disc shaft, the light source is opposite to the photocell.

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