Hall type detection magnetic position output structure

Abstract

The utility model provides a kind of hall formula detects magnetic fixed position output structure, belong to hall formula magnetic detection technical field, including base and gear, the side rotation of base is provided with fixed disc, the other side of base is equipped with the drive assembly for fixed disc;The side of the fixed disc is coaxially rotationally arranged with threaded rod, and a plurality of positioning blocks are slidingly arranged along the radial direction of itself;Linkage assembly is provided between threaded rod and a plurality of positioning blocks, and the linkage assembly is used to drive a plurality of positioning blocks to slide synchronously along the radial direction of fixed disc;The gear is sleeved on the outer surface of a plurality of positioning blocks, and a plurality of positioning blocks are all matched with gear transmission.The present application is sleeved on the outside of multiple positioning blocks after gear, only needs to rotate single threaded rod, can drive all positioning blocks to move synchronously along the radial direction of fixed disc, realize even tensioning and fixing from the inside of gear.The process can automatically complete centering, and operation is simple and fast.

Description

Technical Field

[0001] This utility model belongs to the field of Hall effect magnetic detection technology, specifically relating to a Hall effect magnetic positioning output structure. Background Technology

[0002] In motor control systems, Hall effect magnetic sensing is commonly used to achieve high-precision detection and closed-loop control of motion parameters such as speed and angle. This scheme typically involves mounting a gear on the motor's output shaft. The gear serves as a transmission component or signal carrier, and its rotational position needs to be accurately sensed. Therefore, a magnetic element is placed on the gear, and a Hall sensor is fixedly mounted nearby. When the motor drives the output shaft to rotate, the gear rotates synchronously. The Hall sensor detects the periodic changes in the magnetic field of the magnetic element on the gear, thereby calculating the motor's actual rotational position and speed.

[0003] However, the current method of installing gears onto the motor output shaft is not only cumbersome and time-consuming, but also makes it difficult to visually ensure the concentricity between the gear hole and the shaft. Especially when replacing gears of different specifications, each replacement requires alignment, severely reducing testing efficiency and hindering practical application. Therefore, there is an urgent need for a structure that allows for quick installation and removal of gears on the motor output shaft with automatic centering.

[0004] A patent with publication number CN216670042U discloses a Hall sensor performance testing device, which includes gears, a knob, a conical frustum, a threaded column, and a threaded cylinder. When a different gear needs to be replaced, turning the knob rotates the conical frustum and the threaded column, causing the threaded column to disengage from the threaded cylinder, facilitating gear replacement. Subsequently, the threaded column is aligned with the threaded cylinder, and the knob is turned in the opposite direction, causing the threaded column to be screwed into the threaded cylinder. This allows the smaller outer diameter end of the conical frustum to pass through a through hole until the larger diameter outer wall of the conical frustum abuts against the gear through hole, thus completing the gear replacement.

[0005] However, when replacing different gears, the above solution requires the larger outer diameter wall of the conical frustum to be tightly abutted against the inner hole of the gear to ensure long-term stability. During this contact process, friction will occur between the surface of the conical frustum and the inner hole of the gear. Long-term or repeated operations can easily lead to wear on the contact surfaces, thus affecting the positioning accuracy of subsequent installation. In addition, during the replacement operation, to prevent the gear from wobbling and to keep it concentric with the motor output shaft, the operator must manually support the gear throughout the process; otherwise, the aforementioned wear will be aggravated. This makes the entire replacement process not only cumbersome but also inefficient, hindering its practical application. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model provides a Hall effect detection magnetic positioning output structure.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A Hall effect magnetic positioning output structure includes a base and a gear. A fixed disk is rotatably mounted on one side of the base, and a driving component acting on the fixed disk is provided on the other side of the base. A threaded rod is coaxially rotatably mounted on one side of the fixed disk, and several positioning blocks are slidably mounted along its own radial direction. A linkage component is provided between the threaded rod and the positioning blocks, which drives the positioning blocks to slide synchronously along the radial direction of the fixed disk. The gear is sleeved on the outer surface of the positioning blocks, and the positioning blocks are all engaged with the gear in a transmission connection.

[0009] Furthermore, the drive assembly includes a motor, which is fixedly mounted on the base, and its output shaft is coaxially and fixedly connected to the fixed disk.

[0010] Furthermore, the linkage component includes a connecting seat threaded onto the threaded rod. The number of sides of the connecting seat is equal to the number of positioning blocks and they correspond one-to-one. Each side is hinged to a first connecting rod and a second connecting rod between itself and the corresponding positioning block. The first connecting rod and the second connecting rod are arranged in parallel.

[0011] Furthermore, the side of the fixed plate is provided with several sliding grooves arranged radially thereon. The number of sliding grooves is equal to the number of positioning blocks and they correspond one-to-one. The positioning blocks are limited and slidably disposed in the corresponding sliding grooves.

[0012] Furthermore, each of the positioning blocks has a rubber layer on the side facing away from the central axis of the fixed disk.

[0013] Furthermore, the gear is embedded with magnetic springs using an injection molding method.

[0014] Furthermore, a through hole is formed in the middle of the gear.

[0015] Furthermore, a support plate is fixedly installed on the top of the base, and an electric push rod is fixedly installed on the support plate. The telescopic shaft of the electric push rod is fixedly installed on the detector body through a connecting plate.

[0016] This application has the following beneficial effects:

[0017] 1. In this application, after the gear is fitted onto the outside of multiple positioning blocks, only a single threaded rod needs to be rotated to drive all positioning blocks to move synchronously along the radial direction of the fixed disc, achieving uniform tightening and fixation from inside the gear. This process can automatically complete centering, is simple and quick to operate, and is a pure radial clamping, avoiding friction and wear between the mounting surfaces, ensuring the long-term accuracy and lifespan of the gear, and is more conducive to practical applications.

[0018] 2. The threaded rod and the fixed disc in this application adopt an integrated rotating connection design. This eliminates the alignment and calibration steps during assembly and prevents the possibility of component loss during disassembly or storage. This further reduces the complexity of operation while improving the practicality and reliability of the overall structure. Attached Figure Description

[0019] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a schematic diagram of the gear structure of this utility model;

[0023] Figure 4 This is a schematic diagram of one side of the fixed disk structure of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base; 2. Motor; 3. Support plate; 4. Electric push rod; 5. Gear; 6. Magnetic spring; 7. Threaded rod; 8. Connecting plate; 9. Detector body; 10. Fixing plate; 11. Positioning block; 12. Slide groove; 13. First connecting rod; 14. Second connecting rod; 15. Connecting seat; 16. Through hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] like Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: a Hall effect detection magnetic positioning output structure, including a base 1 and a gear 5, a fixed disk 10 is rotatably arranged on one side of the base 1, and a driving component acting on the fixed disk 10 is provided on the other side of the base 1.

[0028] Specifically, the drive assembly includes a motor 2, which is fixedly mounted on a base 1. The output shaft of the motor 2 rotates through the base 1 and is coaxially and fixedly connected to one side of the fixed plate 10.

[0029] The fixed disk 10 has a threaded rod 7 rotatably mounted on one side, and several positioning blocks 11 are slidably mounted along its own radial direction. A linkage assembly is provided between the threaded rod 7 and the positioning blocks 11 to drive the positioning blocks 11 to slide synchronously along the radial direction of the fixed disk 10. (Preferably, there are four positioning blocks 11 in this application.)

[0030] Among them, the gear 5 is sleeved on the outer surface of several positioning blocks 11, and the several positioning blocks 11 are all in transmission cooperation with the gear 5.

[0031] Specifically, the linkage component includes a connecting seat 15, which is threaded onto the outer surface of the threaded rod 7. The connecting seat 15 has multiple evenly distributed side surfaces. The number of side surfaces of the connecting seat 15 is equal to that of the positioning blocks 11 and they correspond one-to-one. Each side surface of the connecting seat 15 is provided with a first connecting rod 13 and a second connecting rod 14 between it and the corresponding positioning block 11.

[0032] One end of the first link 13 and the second link 14 are hinged to the connecting seat 15, and the other end of the first link 13 and the second link 14 are hinged to the positioning block 11.

[0033] More specifically, a number of T-shaped grooves 12 are provided on one side of the fixed disk 10, and the grooves 12 are arranged radially along the fixed disk 10; the number of grooves 12 is equal to that of positioning blocks 11 and they correspond one to one, and each positioning block 11 is limited and slidably disposed in the corresponding groove 12.

[0034] More specifically, each positioning block 11 has a rubber layer (not shown in the figure) on the side facing away from the central axis of the fixing plate 10. The rubber layer not only improves the fixing effect of the gear 5, but also provides better protection for the gear 5.

[0035] Among them, a through hole 16 is opened in the middle of gear 5.

[0036] Among them, the gear 5 is embedded with a magnetic spring 6 by injection molding.

[0037] In addition, a support plate 3 is fixedly installed on the top of the base 1, and an electric push rod 4 is fixedly installed on the support plate 3. The telescopic shaft of the electric push rod 4 is fixedly installed on the detector body 9 through the connecting plate 8.

[0038] It should be noted that the detector body 9 in this application belongs to conventional prior art, and will not be described in detail here.

[0039] Working principle: When it is necessary to install or replace gear 5, it is sleeved on the outside of multiple positioning blocks 11 in the retracted state. At this time, rotating the threaded rod 7 will drive the connecting seat 15 to translate along its axial direction because the threaded rod 7 is coaxially rotatably connected to the fixed plate 10 and the connecting seat 15 is engaged with it by threads.

[0040] The movement of the connecting seat 15 is transmitted to each positioning block 11 through the first link 13 and the second link 14 hinged to it. Since each positioning block 11 is confined within the T-shaped groove 12 arranged radially along the fixed plate 10, the axial movement of the connecting seat 15 is converted into the synchronous radial outward movement of all positioning blocks 11, so that all positioning blocks 11 push outward evenly from the through hole 16 until they are completely in contact with the hole wall.

[0041] The above process automatically completes the centering and rigid clamping of gear 5 relative to the center of fixed disk 10, thereby avoiding wear caused by friction in the traditional method.

[0042] After gear 5 is clamped, the electric push rod 4 can be activated to adjust the height of the detector body 9 so that it is in the optimal detection gap with the magnetic spring 6.

[0043] When the motor 2 is started, the motor 2 drives the fixed disk 10 and the gear 5 fixed thereon to rotate together through the output shaft. The magnetic spring 6, which is integrally formed on the gear 5 by injection molding insert, rotates synchronously, thereby performing detection through the detector body 9.

[0044] Finally, by rotating the threaded rod 7 in the opposite direction, the positioning block 11 can be radially contracted, quickly releasing the gear 5.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Hall effect detection magnetic positioning output structure, characterized in that, Includes a base (1) and a gear (5). A fixed disk (10) is rotatably provided on one side of the base (1), and a drive assembly acting on the fixed disk (10) is provided on the other side of the base (1). One side of the fixed disk (10) is provided with a threaded rod (7) that rotates coaxially, and a number of positioning blocks (11) that slide along its own radial direction. A linkage component is provided between the threaded rod (7) and the number of positioning blocks (11), and the linkage component is used to drive the number of positioning blocks (11) to slide synchronously along the radial direction of the fixed disk (10). The gear (5) is sleeved on the outer surface of several positioning blocks (11), and the several positioning blocks (11) are all in transmission cooperation with the gear (5).

2. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, The drive assembly includes a motor (2), which is fixedly mounted on the base (1), and its output shaft is coaxially fixedly connected to the fixed disk (10).

3. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, The linkage component includes a connecting seat (15) threaded onto the threaded rod (7). The number of sides of the connecting seat (15) is equal to and corresponds one-to-one with the positioning blocks (11). Each side is hinged to the corresponding positioning block (11) with a first connecting rod (13) and a second connecting rod (14). The first connecting rod (13) and the second connecting rod (14) are arranged in parallel.

4. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, The side of the fixed plate (10) is provided with a number of sliding grooves (12) arranged radially thereon. The number of sliding grooves (12) and the number of positioning blocks (11) are equal and correspond one to one. The positioning blocks (11) are limited and slidably disposed in the corresponding sliding grooves (12).

5. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, Each of the positioning blocks (11) has a rubber layer on the side facing away from the central axis of the fixed plate (10).

6. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, The gear (5) has a magnetic spring (6) embedded in it by injection molding.

7. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, A through hole (16) is provided in the middle of the gear (5).

8. The Hall effect magnetic positioning output structure according to claim 1, characterized in that, A support plate (3) is fixedly installed on the top of the base (1), and an electric push rod (4) is fixedly installed on the support plate (3). The telescopic shaft of the electric push rod (4) is fixedly installed on the detector body (9) through the connecting plate (8).

Images