An encoder assembly

Abstract

The utility model discloses a kind of encoder assemblies, coding turntable includes turntable part and connecting part;Connecting part has a cavity with one end open, the end face of open is provided with accommodating groove, annular tight fit ring is assembled in accommodating groove;Roller shaft is connected with the interference fit of this tight fit ring, to drive coding turntable rotation by tight fit ring. The utility model provides a kind of encoder assembly, by the cavity connection of roller shaft and coding turntable, realize hard connection accurate transmission, avoid skidding, while adopting silica gel tight fit ring and roller shaft interference fit, utilize silica gel elastic absorption vibration, make assembly more closely while effectively reduce operating noise, in addition, annular flange and elastic limiting protrusion are also provided, ensure that tight fit ring assembly is stable, prevent loosening. The encoder assembly of the application is simple and compact, reduces cost and improves reliability.

Description

Technical Field

[0001] This utility model relates to the field of encoders, and more specifically to an encoder assembly. Background Technology

[0002] In existing encoder assembly designs, the following two methods are typically used to ensure a tight fit between the roller shaft and the encoder:

[0003] One approach is to split the encoder into two independent components and then sandwich a tight-fitting ring between them. This design increases the number of parts, complicates the assembly process, and raises production costs. Furthermore, due to the involvement of multiple components, the precision of the fit between them is difficult to guarantee, potentially leading to unstable encoder assembly performance and affecting the accuracy and reliability of the encoded signal. Another approach involves fitting a tight-fitting ring onto the roller's shaft before attaching it to the encoder. However, the connection between the tight-fitting ring and the roller shaft and surrounding components may not be tight enough. When the encoder assembly operates at high speed, the silicone sleeve is prone to relative slippage or loosening, which can generate noise during rolling.

[0004] Therefore, a more rationally structured encoder component is needed to meet the needs of practical applications. Utility Model Content

[0005] To address the aforementioned problems, this utility model aims to provide a noiseless encoder assembly equipped with a tight-fitting ring.

[0006] To achieve this technical objective, the present invention provides an encoder assembly comprising an encoder turntable driven to rotate by a roller shaft. When the encoder turntable rotates, it cooperates with a sensor to generate an encoded signal. The encoder turntable includes a turntable portion and a connecting portion. The connecting portion has a cavity with one open end, and the end face of the open end is provided with a receiving groove. An annular fitting ring is fitted inside the receiving groove. The roller shaft is interference-fitted with the fitting ring to drive the encoder turntable to rotate via the fitting ring.

[0007] Preferably, the end of the opening is provided with an inwardly radially extending annular flange, which abuts against the surface of the fastening ring to limit the axial displacement of the fastening ring.

[0008] Preferably, the receiving groove has an annular structure with a rectangular cross-section.

[0009] Preferably, the cross-section of the roller shaft is hexagonal, and the cavity is a hexagonal cavity structure that matches the roller shaft.

[0010] Preferably, the material of the fitting ring is silicone.

[0011] Preferably, the inner wall of the cavity is provided with a protruding elastic limiting protrusion.

[0012] Preferably, the device also includes a housing outside the encoding turntable, on which a circuit board is fixed, and the sensor is mounted on the circuit board. The sensor is a photoelectric pair assembly, and the encoding turntable has gratings spaced at uniform intervals relative to the photoelectric pair assembly.

[0013] Preferably, the encoding turntable is provided with a toothed surface on the other end face where the grating component is set, and the housing is also provided with an elastic tactile component that matches the toothed surface.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an encoder assembly that achieves precise transmission through a rigid connection between the roller shaft and the cavity of the encoder turntable, avoiding slippage. Simultaneously, a silicone tight-fitting ring is used in conjunction with the roller shaft, utilizing the elasticity of silicone to absorb vibration, resulting in a tighter assembly and effectively reducing operating noise. Furthermore, an annular flange and elastic limiting protrusion are provided to ensure a secure fit of the tight-fitting ring and prevent loosening. The encoder assembly of this application is simple and compact, reducing costs and improving reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model before processing;

[0018] Figure 4 This is a schematic diagram of the structure of the present invention after processing;

[0019] Figure 5 This is a cross-sectional view of the encoding turntable in this utility model;

[0020] Figure 6 This is a cross-sectional view of the present invention.

[0021] In the diagram: 1. Encoding turntable; 11. Turntable section; 12. Connecting section; 121. Cavity; 122. Receiving groove; 123. Annular flange; 124. Elastic limiting protrusion; 13. Grating component; 14. Concave and convex toothed surface; 2. Roller shaft; 3. Fitting ring; 4. Housing; 5. Circuit board; 6. Photoelectric pair assembly; 7. Elastic tactile component. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; these embodiments are only some embodiments of the present invention; other embodiments obtained based on this application without creative effort are all within the scope of protection of the present invention.

[0023] In the following embodiments, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "top / bottom," etc., are all based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of clearly describing this embodiment. They do not indicate or imply that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this application. At the same time, the terms "first" and "second" in the embodiments are only used for descriptive purposes and do not represent an indication or implication of relative importance.

[0024] like Figure 1-6 As shown, the specific embodiment of this utility model is an encoder assembly, which mainly includes an encoder turntable 1, a roller shaft 2, a housing 4, a circuit board 5, a photoelectric pair assembly 6, an elastic tactile component 7, and an annular fastening ring 3, etc.

[0025] The encoder turntable 1 includes a turntable portion 11 and a connecting portion 12. The connecting portion 12 has a cavity 121 open at one end, and a receiving groove 122 on the open end face. The receiving groove 122 has an annular structure with a rectangular cross-section. An annular fastening ring 3 is assembled within the receiving groove 122. The fastening ring 3 is made of silicone, which has good elasticity and cushioning properties, effectively reducing noise. An annular flange 123 extending radially inward is provided at the open end. The annular flange 123 abuts against the surface of the fastening ring 3 to limit the axial displacement of the fastening ring 3, prevent the fastening ring 3 from loosening or falling off, and reduce the shaking of the fastening ring 3 during operation, thereby helping to reduce noise. Figure 3-4 As shown, specifically, the fastening ring 3 is first placed in the receiving groove 122, and then the opening of the connecting part 12 is bent inward to form an annular flange 123 by spin riveting until the annular flange 123 abuts against the fastening ring 3, so that the fastening ring 3 is axially limited.

[0026] The roller shaft 2 has a hexagonal cross-section, and the cavity 121 is a hexagonal cavity structure that matches the roller shaft 2. The roller shaft 2 is inserted into the hexagonal cavity 121 of the encoder turntable 1, so that the roller shaft 2 and the tight-fitting ring 3 are connected by an interference fit. This interference fit, combined with the structural characteristics of the hexagon, ensures precise and stable transmission between the roller shaft 2 and the encoder turntable 1, preventing slippage during transmission. The inner wall of the cavity 121 is provided with protruding elastic limiting protrusions 124, further enhancing the assembly stability of the roller shaft 2.

[0027] The housing 4 is positioned outside the encoding turntable 1 to protect the internal components. A circuit board 5 is fixedly mounted on the housing 4, and a photoelectric pair assembly 6 is mounted on the circuit board 5. The encoding turntable 1 has evenly spaced grating elements 13 opposite the photoelectric pair assembly 6. When the encoding turntable 1 rotates under the drive of the roller shaft 2, the grating elements 13 cooperate with the photoelectric pair assembly 6 to generate an encoding signal, enabling precise detection of the rotation position or angle.

[0028] The encoder turntable 1 has a toothed surface 14 on the other end face where the grating component 13 is located, and the housing 4 has an elastic tactile component 7 that matches the toothed surface 14. When operating the encoder assembly, the user rotates the encoder turntable 1, and the elastic tactile component 7 interacts with the toothed surface 14 to produce obvious tactile feedback, allowing the user to accurately perceive the operating position and force, thus improving the accuracy and comfort of operation.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. An encoder assembly comprising an encoding turntable driven to rotate by a roller shaft, the encoding turntable cooperating with a sensor to generate an encoded signal when rotating, characterized in that: The encoding turntable includes a turntable part and a connecting part; the connecting part has a cavity with one open end, and the end face of the open end is provided with a receiving groove, and an annular tight-fitting ring is assembled in the receiving groove; the roller shaft is interference-fitted with the tight-fitting ring to drive the encoding turntable to rotate through the tight-fitting ring.

2. The encoder assembly according to claim 1, characterized in that: The end of the opening is provided with an inwardly radially extending annular flange, which abuts against the surface of the tight-fitting ring to limit the axial displacement of the tight-fitting ring.

3. The encoder assembly according to claim 2, characterized in that: The receiving groove has an annular structure with a rectangular cross-section.

4. The encoder assembly according to claim 2, characterized in that: The cross-section of the roller shaft is hexagonal, and the cavity is a hexagonal cavity structure that matches the roller shaft.

5. The encoder assembly according to claim 2, characterized in that: The material of the fitting ring is silicone.

6. The encoder assembly according to claim 2, characterized in that: The inner wall of the cavity is provided with protruding elastic limiting protrusions.

7. The encoder assembly according to any one of claims 1-6, characterized in that: It also includes a housing outside the encoding turntable, on which a circuit board is fixed, and the sensor is mounted on the circuit board. The sensor is a photoelectric pair assembly, and the encoding turntable has gratings spaced at uniform intervals relative to the photoelectric pair assembly.

8. The encoder assembly according to claim 7, characterized in that: The encoding turntable is provided with a concave-convex toothed surface on the other end face where the grating component is set, and the housing is also provided with an elastic tactile component that matches the concave-convex toothed surface.

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