Angle sensor

Abstract

Provided is an angle sensor. The upper cover and the lower cover are connected with each other; the epoxy resin is arranged between the upper cover and the lower cover; the mounting groove is formed in the lower cover and is provided with a rotating shaft bin; the magnet rotating shaft is inserted into the rotating shaft bin; the circuit board is attached to the rotating shaft end cover; wherein the rotating shaft end cover is mechanically connected with the lower cover so as to seal the rotating shaft bin; according to the utility model, the angle output stability of the sensor can be effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial equipment, in particular to an angle sensor. Background Art

[0002] In modern industrial automation, robotics, aerospace, and precision instrument manufacturing, there are increasingly higher requirements for the accuracy and stability of angle measurement. It can convert the angular changes of an object's rotation into digital or analog signals, providing accurate data support for the position, angle, and direction of the device. These sensors operate on a variety of principles, including the Hall effect, magnetoresistive effect, and photoelectric effect. Through built-in sensitive components such as magnetoresistors, Hall elements, and photodiodes, they can achieve sensitive perception and signal conversion of tiny changes in rotating parts. However, under existing technologies, angle sensors face a series of challenges in terms of the stability of their angle output. Accuracy error is one of the common problems of angle sensors. Due to the limitations of the manufacturing process, the accuracy of the sensor often has a certain error. This error is particularly noticeable in the field of high-precision measurement and may have a negative impact on the performance and reliability of the equipment.

[0003] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this utility model is to provide an angle sensor that can effectively solve the above technical problems.

[0005] In order to achieve the purpose of this utility model, the following technical solutions are adopted:

[0006] An angle sensor, characterized in that it includes an upper cover and a lower cover connected to each other, epoxy resin arranged between the upper cover and the lower cover, a mounting groove arranged in the lower cover and having a shaft compartment, a magnet shaft inserted into the shaft compartment, a torsion spring sleeved on the magnet shaft, an assembly plate arranged at one end of the magnet shaft, a magnet arranged on the assembly plate, a shaft end cover inserted into the shaft compartment, and a circuit board affixed to the shaft end cover; wherein the shaft end cover is mechanically connected to the lower cover to close the shaft compartment.

[0007] Furthermore, the cross-sectional shape of the magnet is rectangular.

[0008] Furthermore, a fixing block is provided on the assembly plate, and an assembly groove for placing the magnet is provided on the fixing block.

[0009] Furthermore, the cross-sectional shape of the assembly groove is rectangular.

[0010] Furthermore, the cross-section of the fixing block is circular.

[0011] Further, the rotating shaft end cover is provided with a plurality of fixing columns, and the circuit board is provided with a plurality of fixing holes for the fixing columns to pass through.

[0012] Further, the fixing column is provided with at least three.

[0013] Further, the fixing block is uniformly provided with a plurality of supporting columns, and the supporting columns are used for abutting against one end of the rotating shaft end cover.

[0014] Further, one side of the circuit board is provided with an induction chip, and the induction chip and the magnet are located on the same axis.

[0015] Further, the upper cover and the lower cover are sealed through ultrasonic welding technology.

[0016] Compared with the prior art, the sensor angle output stability can be effectively enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principle of the present application, and do not constitute a limitation on the present application.

[0018] Figure 1 It is a perspective view of the present application.

[0019] Figure 2 It is an exploded view of the present application.

[0020] Figure 3 It is a sectional view of the present application.

[0021] Figure 4 It is a bottom view of the present application.

[0022] Figure 5 It is a side view of the present application.

[0023] In the drawings: 1, lower cover; 2, mounting groove; 3, magnet rotating shaft; 4, torsional spring; 5, rotating shaft end cover; 6, circuit board; 7, epoxy resin; 8, magnet; 11, upper cover; 21, rotating shaft warehouse; 31, assembly plate; 32, fixing block; 33, supporting column; 34, assembly groove; 51, fixing column; 61, fixing hole; 62, induction chip. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below, obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] like Figures 1 to 5 As shown, an angle sensor includes an upper cover 11 and a lower cover 1 connected to each other, an epoxy resin 7 arranged between the upper cover 11 and the lower cover 1, a mounting groove 2 provided in the lower cover 1 and having a shaft compartment 21, a magnet shaft 3 inserted in the shaft compartment 21, a torsion spring 4 sleeved on the magnet shaft 3, an assembly plate 31 provided at one end of the magnet shaft 3, a magnet 8 provided on the assembly plate 31, a shaft end cover 5 inserted on the shaft compartment 21, and a circuit board 6 attached to the shaft end cover 5; wherein the shaft end cover 5 and the lower cover 1 are mechanically connected by a tight-fitting structure to close the shaft compartment 21; in this embodiment, when the shaft compartment 21 is sealed by the tight-fitting structure of the shaft end cover 5 and the lower cover 1, the epoxy resin 7 cannot enter the shaft compartment 21 when the epoxy resin 7 is poured between the upper cover 11 and the lower cover 1, thereby ensuring the stability of the use effect of the embodiment. Furthermore, by sleeve-arranging the torsion spring 4 on the magnet shaft 3 , the present embodiment effectively reduces the gap between the shaft compartment 21 and the magnet shaft 3 in the application environment, thereby enhancing the stability of the sensor angle output.

[0027] In the specific design, a fixing block 32 is provided on the assembly plate 31, and the cross-sectional shape of the fixing block 32 is circular. The fixing block 32 is provided with an assembly groove 34 for placing the magnet 8, and the cross-sectional shape of the magnet 8 is rectangular. The cross-sectional shape of the assembly groove 34 is rectangular. By setting the rectangular assembly groove 34 and the rectangular magnet 8 to cooperate with each other, it can effectively prevent the position of the magnet 8 from being offset during the implementation process, and avoid abnormal angle output.

[0028] In the specific design, at least four support columns 33 are evenly provided on the fixed block 32. The support columns 33 are used to abut against one end of the shaft end cover 5. In this embodiment, the support columns 33 are provided to create a gap between the shaft end cover 5 and the magnet 8. During actual use, the magnet 8 is effectively prevented from making direct contact with the shaft end cover 5, thereby avoiding mutual wear between the magnet 8 and the shaft end cover 5.

[0029] It is worth further explaining that a number of fixing posts 51 are provided on the rotating shaft end cover 5, and a number of fixing holes 61 for the fixing posts 51 to pass through are provided on the circuit board 6. A sensing chip 62 is provided on one side of the circuit board 6, and the sensing chip 62 and the magnet 8 are located on the same axis. By providing the fixing posts 51 and the fixing holes 61, the circuit board 6 can be positioned and connected to the rotating shaft end cover 5 while enhancing the structural strength of the connection between the circuit board 6 and the rotating shaft end cover 5, thereby avoiding displacement of the sensing chip 62 and the magnet 8, and further enhancing the stability of the implementation effect of this embodiment.

[0030] During the specific design, the upper cover 11 and the lower cover 1 are sealed by ultrasonic welding technology. In this embodiment, a first sealing structure is formed between the upper cover 11 and the lower cover 1 by potting epoxy resin 7, and then a second sealing structure is formed by ultrasonic welding technology. By setting up a double-layer sealing structure, the sealing of the structure of the utility model is strengthened, and the stability of the output effect of this embodiment is further ensured.

[0031] Working Principle: When the sensor is activated, the magnet shaft 3 rotates as the external angle changes. The movement of magnet 8 causes a change in the magnetic field between the magnet 8 mounted thereon and the sensor chip 62. The sensor chip 62 on the circuit board 6 detects this change and converts it into an electrical signal for output. The sensor's interior is sealed by epoxy resin 7, forming a primary seal, and ultrasonic welding technology forms a secondary seal, preventing foreign matter from entering the sensor. By providing a torsion spring 4 on the magnet shaft 3 and providing a rectangular mounting slot 34 that interacts with the rectangular magnet 8, this embodiment effectively enhances the stability of the sensor's angular output in its intended application, thereby ensuring high-precision and reliable angle measurement.

[0032] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0033] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. An angle sensor, characterized in that: The invention comprises an upper cover (11) and a lower cover (1) connected to each other, an epoxy resin (7) arranged between the upper cover (11) and the lower cover (1), a mounting groove (2) arranged in the lower cover (1) and having a rotating shaft bin (21), a magnet rotating shaft (3) inserted in the rotating shaft bin (21), a torsion spring (4) sleeved on the magnet rotating shaft (3), an assembly plate (31) arranged at one end of the magnet rotating shaft (3), a magnet (8) arranged on the assembly plate (31), a rotating shaft end cover (5) inserted in the rotating shaft bin (21), and a circuit board (6) attached to the rotating shaft end cover (5); wherein the rotating shaft end cover (5) is mechanically connected to the lower cover (1) to close the rotating shaft bin (21).

2. The angle sensor according to claim 1, wherein: The cross-sectional shape of the magnet (8) is rectangular.

3. The angle sensor according to claim 2, wherein: A fixing block (32) is provided on the assembly plate (31), and an assembly groove (34) for placing the magnet (8) is provided on the fixing block (32).

4. The angle sensor according to claim 3, wherein: The cross-sectional shape of the assembly groove (34) is rectangular.

5. The angle sensor according to claim 4, wherein: The cross-sectional shape of the fixing block (32) is circular.

6. The angle sensor according to claim 5, wherein: The shaft end cover (5) is provided with a plurality of fixing columns (51), and the circuit board (6) is provided with a plurality of fixing holes (61) for the fixing columns (51) to pass through.

7. The angle sensor according to claim 6, wherein: There are at least three fixing columns (51).

8. The angle sensor according to claim 7, wherein: A plurality of support columns (33) are evenly arranged on the fixed block (32), and the support columns (33) are used to abut against one end of the rotating shaft end cover (5).

9. The angle sensor according to claim 8, wherein: A sensing chip (62) is provided on one side of the circuit board (6), and the sensing chip (62) and the magnet (8) are located on the same axis.

10. The angle sensor according to claim 1, wherein: The upper cover (11) and the lower cover (1) are sealed by ultrasonic welding technology.

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