A decelerator rotation position detection magnetic ring mounting structure

Abstract

The utility model relates to modern precise transmission and intelligent control technical field especially, a kind of reduction gear rotary position detection magnetic ring mounting structure.It is provided with such a kind of reduction gear rotary position detection magnetic ring mounting structure in the utility model, including shell, magnetic ring mounting seat, detection magnetic ring and PCBA, PCBA is installed in shell inner bottom, PCBA front side is provided with magnetic ring mounting seat, detection magnetic ring is installed in magnetic ring mounting seat front side.Due to detection magnetic ring is directly connected by synchronous shaft rear end thread, and synchronous shaft is rigidly connected with output flange, thus the rotary motion of magnetic ring is completely synchronous with output shaft, eliminates the transmission gap and phase lag caused by traditional multistage transmission or additional installation structure, simultaneously, entire detection component is integrated in shell interior, need not additional mounting flange or bushing, shorten axial dimension, reduce radial space occupation, satisfy the demand of modern joint module to miniaturization, integration.

Description

Technical Field

[0001] This utility model relates to the field of modern precision transmission and intelligent control technology, and in particular to a magnetic ring mounting structure for detecting the rotational position of a reducer. Background Technology

[0002] In the fields of modern precision transmission and intelligent control, such as industrial robots, precision machine tools, and automated equipment, the reducer, as a core power transmission component, relies on its output rotational position information as a key parameter for achieving high-precision closed-loop control. To obtain this information in real time, a rotational position detection device is typically integrated into the reducer. Among these, non-contact detection schemes based on magnetic coding technology are widely used due to their simple structure, high reliability, and strong resistance to contamination.

[0003] In existing technologies, a common method for rotary position detection involves installing an independent position sensor at the output end of the reducer or the high-speed end of the motor, and fixing the detection magnetic ring with an additional magnetic ring mounting structure. However, this structure typically employs a multi-stage connection form of "reducer output flange - sensor mounting flange - magnetic ring - bushing," which significantly increases the axial length of the entire transmission system, and the radial dimension also expands due to the multi-layer stacking. This makes it difficult to meet the development trend of highly integrated and compact joint modules, limiting the layout and application of equipment in confined spaces. Secondly, the connection between the magnetic ring and the mounting structure (such as simple press fitting or adhesive bonding) may cause slight slippage or deformation of the fixing link under frequent forward and reverse rotation and high torque impact conditions. This micro-movement not only causes phase shift of the magnetic ring mounting, resulting in drift or loss of absolute position information, but also generates particulate matter due to wear, contaminating the sensor and seriously affecting its long-term reliability.

[0004] Therefore, a magnetic ring mounting structure for detecting the rotational position of a reducer is needed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies that typically employ a multi-stage connection structure of "reducer output flange - sensor mounting flange - magnetic ring - bushing," which significantly increases the axial length of the entire transmission system and expands the radial dimension due to multi-layer stacking, making it difficult to meet the development trend of highly integrated and compact joint modules, and limiting the layout and application of equipment in confined spaces, this invention provides a reducer rotation position detection magnetic ring mounting structure. Furthermore, the connection between the magnetic ring and the mounting structure (such as simple press fitting or adhesive bonding) may lead to slight slippage or deformation of the fixed component under frequent forward and reverse rotation and high-torque impact conditions. This micro-movement not only causes phase shift of the magnetic ring mounting, resulting in drift or loss of absolute position information, but also generates particulate matter due to wear, contaminating the sensor and severely affecting its long-term reliability.

[0006] The technical solution is as follows: A reducer rotation position detection magnetic ring mounting structure includes an output flange, a housing, a synchronous shaft, a planetary gearbox, a motor shaft, a motor magnet, a magnetic ring mounting base, a high-speed end detection FCB, a detection magnetic ring, and a PCBA. The PCBA is installed at the bottom inside the housing, and a magnetic ring mounting base is provided on the front side of the PCBA. A detection magnetic ring is installed on the front side of the magnetic ring mounting base. The high-speed end detection FCB is installed inside the housing. The motor shaft is provided on the front side of the magnetic ring mounting base, and a motor magnet is provided on the outer side of the motor shaft. The planetary gearbox is provided on the front side of the motor shaft. A synchronous shaft is installed through the motor shaft. Both ends of the synchronous shaft are threaded. The rear end of the synchronous shaft is threadedly connected to the detection magnetic ring. An output flange is installed on the front side of the planetary gearbox, and the output flange is threadedly connected to the front end of the synchronous shaft.

[0007] In a preferred embodiment of this utility model, it further includes a support plate, a support ring, a limiting plate, a fixing bolt, and a screw block. The support ring is fixedly connected to the lower part of the outer shell, and the support plate is fixedly connected to both the left and right sides of the support ring. The limiting plate is placed on the upper part of the outer shell, and two fixing bolts are inserted into the limiting plate. The fixing bolts pass through the support ring, and a screw block is screwed onto the fixing bolt, which is close to the support ring.

[0008] In a preferred embodiment of the present invention, the device further includes a card plate, a protective shell, and a silicone pad. The card plate is snapped onto the top of the limiting plate, and the protective shell is fixedly connected to the card plate. A silicone pad is provided on the surface of the protective shell.

[0009] In a preferred embodiment of the present invention, an anti-slip pad is also included, with the bottom of the support plate being adhered to the anti-slip pad.

[0010] In a preferred embodiment of this utility model, a damping ring is also included. The damping ring is provided on the card plate and is in close contact with the limiting plate.

[0011] In a preferred embodiment of this invention, the synchronous shaft is made of high-strength alloy steel and undergoes surface nitriding treatment.

[0012] Compared with the prior art, this utility model provides a reducer rotation position detection magnetic ring mounting structure, which has the following advantages: 1. Since the detection magnetic ring is directly connected to the synchronous shaft through the rear thread, and the synchronous shaft is rigidly connected to the output flange, the rotation of the magnetic ring is completely synchronized with the output shaft, eliminating the transmission gap and phase lag caused by traditional multi-stage transmission or additional mounting structures. At the same time, the entire detection component is integrated inside the housing, eliminating the need for additional mounting flanges or bushings, shortening the axial dimension, reducing the radial space occupation, and meeting the needs of modern joint modules for miniaturization and integration.

[0013] 2. The upper and lower clamping fixation of the outer shell is formed by the cooperation of the limiting plate, screw and support ring, which effectively prevents loosening caused by vibration or impact during equipment operation and improves the stability and reliability of the overall installation.

[0014] 3. When an external collision or impact occurs, the silicone pad on the surface of the protective shell comes into contact with the external force first, and absorbs the impact energy by using its elastic deformation, thus playing a buffering and protective role and effectively preventing the internal detection components from being damaged by severe vibration or impact. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial sectional view of the output flange, housing, planetary gearbox, and other components of this utility model.

[0017] Figure 3 This is an exploded view of the synchronous shaft, motor magnet, and magnetic ring mounting base components of this utility model.

[0018] Figure 4 This is a partial sectional view of the components of this utility model, such as the support ring, the limiting plate, and the screw block.

[0019] Figure 5 This is a partial cross-sectional view of the card plate, protective shell, and silicone pad of this utility model.

[0020] The components in the attached diagram are labeled as follows: 1. Output flange, 101. Housing, 2. Synchronous shaft, 3. Planetary gearbox, 4. Motor shaft, 5. Motor magnet, 6. Magnetic ring mounting base, 7. High-speed end detection FCB, 8. Detection magnetic ring, 9. PCBA, 10. Support plate, 11. Support ring, 12. Limiting plate, 13. Fixing bolt, 14. Tightening block, 15. Anti-slip pad, 16. Clamping plate, 17. Protective shell, 18. Silicone pad, 19. Damping ring. Detailed Implementation

[0021] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0022] Example 1: A mounting structure for a magnetic ring for detecting the rotational position of a reducer. Please refer to [link / reference]. Figures 1-3The system includes an output flange 1, a housing 101, a synchronous shaft 2, a planetary gearbox 3, a motor shaft 4, a motor magnet 5, a magnetic ring mounting base 6, a high-speed end detection FCB 7, a detection magnetic ring 8, and a PCBA 9. The PCBA 9 is installed at the bottom inside the housing 101. A magnetic ring mounting base 6 is located on the front side of the PCBA 9. A detection magnetic ring 8 is installed on the front side of the magnetic ring mounting base 6. The high-speed end detection FCB 7 is installed inside the housing 101. The motor shaft 4 is located on the front side of the magnetic ring mounting base 6. A motor magnet 5 is located on the outside of the motor shaft 4. The planetary gearbox 3 is located on the front side of the motor shaft 4. A synchronous shaft 2 runs through the inside of the motor shaft 4. Both ends of the synchronous shaft 2 are threaded. The rear end of the synchronous shaft 2 is threadedly connected to the detection magnetic ring 8. An output flange 1 is installed on the front side of the planetary gearbox 3. The output flange 1 is threadedly connected to the front end of the synchronous shaft 2. The synchronous shaft 2 is made of high-strength alloy steel and undergoes surface nitriding treatment to improve its wear resistance and fatigue resistance, extending its overall service life.

[0023] When using the reducer to rotate the magnetic ring 8 mounting structure for position detection, the motor drives the motor shaft 4 to rotate. The motor shaft 4 drives the internally running synchronous shaft 2 and the front-end planetary gearbox 3 to reduce speed and increase torque. Finally, the power is transmitted to the external load through the output flange 1. Crucially, the synchronous shaft 2 is a through-shaft structure with threads at both ends: the front end is rigidly connected to the output flange 1 via threads, transmitting all output torque; the rear end is directly connected to the detection magnetic ring 8 via threads. When the synchronous shaft 2 rotates with the output shaft, the detection magnetic ring 8 connected to it rotates synchronously, generating a periodically changing magnetic field. This magnetic field is sensed in real time by the high-speed end detection FCB7 and then... The signal is converted into an electrical signal, which is then processed by PCBA9 to achieve precise detection of the absolute position, speed, and direction of the reducer output. Since the detection magnetic ring 8 is directly connected to the rear thread of the synchronous shaft 2, and the synchronous shaft 2 is rigidly connected to the output flange 1, the rotation of the magnetic ring is completely synchronized with the output shaft, eliminating the transmission gap and phase lag caused by traditional multi-stage transmission or additional installation structures. At the same time, the entire detection component (detection magnetic ring 8, high-speed end detection FCB7, PCBA9) is integrated inside the housing 101, eliminating the need for additional mounting flanges or bushings, shortening the axial dimension, reducing the radial space occupied, and meeting the requirements of modern joint modules for miniaturization and integration.

[0024] Example 2: Based on Example 1, please refer to... Figure 1 , Figure 4 and Figure 5It also includes a support plate 10, a ring 11, a limiting plate 12, fixing bolts 13, and screw blocks 14. The ring 11 is fixedly connected to the lower part of the outer shell 101. The support plate 10 is fixedly connected to both the left and right sides of the ring 11. The limiting plate 12 is placed on the upper part of the outer shell 101. Two fixing bolts 13 are inserted into the limiting plate 12. The fixing bolts 13 pass through the ring 11. Screw blocks 14 are screwed onto the fixing bolts 13. The screw blocks 14 are close to the ring 11. The bottom of the support plate 10 is glued with an anti-slip pad 15 to increase the friction between the support plate 10 and the contact surface and improve the overall stability of the installation structure.

[0025] When fixing the installation structure, first move the housing 101 to the predetermined installation position on the equipment and initially position it. Then, place the limiting plate 12 on the upper part of the housing 101, use two screws to pass through the limiting plate 12 and pass its lower end through the support ring 11. Finally, by screwing in the screw block 14, the limiting plate 12 is firmly installed on the housing 101. Through the cooperation of the limiting plate 12, screws and support ring 11, the housing 101 is clamped and fixed from top to bottom, which effectively prevents loosening caused by vibration or impact during equipment operation and improves the stability and reliability of the overall installation.

[0026] Please see Figure 1 and Figure 5 It also includes a card plate 16, a protective shell 17, and a silicone pad 18. The card plate 16 is snapped onto the top of the limiting plate 12. The protective shell 17 is fixedly connected to the card plate 16. The silicone pad 18 is provided on the surface of the protective shell 17. The card plate 16 is provided with a damping ring 19. The damping ring 19 is in close contact with the limiting plate 12 to increase frictional resistance and prevent the card plate 16 from loosening.

[0027] After the limiting plate 12 is fixed to the retaining ring 11 by the screw, the protective shell 17 is aligned with the slot on the top of the limiting plate 12 and slowly pressed down. As the protective shell 17 moves down, the retaining plate 16 is gradually inserted into the corresponding slot of the limiting plate 12 until it is fully engaged, thereby achieving rapid positioning and reliable fixation of the protective shell 17 on the limiting plate 12. When an external collision or impact occurs, the silicone pad 18 on the surface of the protective shell 17 will first come into contact with the external force and absorb the impact energy through its elastic deformation, playing a buffering and protective role, effectively preventing the internal detection components from being damaged by severe vibration or impact.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A magnetic ring mounting structure for detecting the rotational position of a reducer, characterized in that, The system includes an output flange (1), a housing (101), a synchronous shaft (2), a planetary gearbox (3), a motor shaft (4), a motor magnet (5), a magnetic ring mounting base (6), a high-speed end detection FCB (7), a detection magnetic ring (8), and a PCBA (9). The PCBA (9) is installed at the bottom inside the housing (101). A magnetic ring mounting base (6) is provided on the front side of the PCBA (9). A detection magnetic ring (8) is installed on the front side of the magnetic ring mounting base (6). The high-speed end detection FCB (7) is installed inside the housing (101). CB (7), a motor shaft (4) is provided on the front side of the magnetic ring mounting base (6), a motor magnet (5) is provided on the outside of the motor shaft (4), a planetary gearbox (3) is provided on the front side of the motor shaft (4), a synchronous shaft (2) is provided through the inside of the motor shaft (4), threads are provided at both ends of the synchronous shaft (2), the rear end of the synchronous shaft (2) is threaded to the detection magnetic ring (8), an output flange (1) is installed on the front side of the planetary gearbox (3), and the output flange (1) is threaded to the front end of the synchronous shaft (2).

2. The rotational position detection magnetic ring mounting structure of a speed reducer according to claim 1, characterized by It also includes a support plate (10), a ring (11), a limiting plate (12), a fixing bolt (13), and a screw block (14). The lower part of the outer shell (101) is fixedly connected to the ring (11), and the left and right sides of the ring (11) are fixedly connected to the support plate (10). The upper part of the outer shell (101) is placed with a limiting plate (12), and two fixing bolts (13) are inserted on the limiting plate (12). The fixing bolts (13) pass through the ring (11), and a screw block (14) is screwed on the fixing bolts (13). The screw block (14) is close to the ring (11).

3. The rotational position detection magnetic ring mounting structure of a speed reducer according to claim 2, characterized by It also includes a card plate (16), a protective shell (17) and a silicone pad (18). The card plate (16) is snapped onto the top of the limiting plate (12), and the protective shell (17) is fixedly connected to the card plate (16). The surface of the protective shell (17) is provided with a silicone pad (18).

4. The rotational position detection magnetic ring mounting structure of a speed reducer according to claim 3, characterized by It also includes an anti-slip mat (15), and the bottom of the support plate (10) is glued with an anti-slip mat (15).

5. The rotational position detection magnetic ring mounting structure of a speed reducer according to claim 4, characterized by It also includes a damping ring (19), which is provided on the card plate (16) and is in close contact with the limiting plate (12).

6. The rotational position detection magnetic ring mounting structure of a speed reducer according to claim 5, characterized by The synchronous shaft (2) is made of high-strength alloy steel and is subjected to surface nitriding treatment.

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