CN216356668U

CN216356668U - Non-contact high-precision signal switch

Info

Publication number: CN216356668U
Application number: CN202122518514.4U
Authority: CN
Inventors: 贺培; 陆亚洲
Original assignee: Suzhou Huazhijie Telecom Co ltd
Current assignee: Suzhou Huazhijie Telecom Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-19
Anticipated expiration: 2031-10-19

Abstract

The utility model relates to a non-contact high-precision signal switch, which comprises a shell, wherein a mounting cavity is arranged in the shell, and a PCB is fixedly arranged in the mounting cavity.

Description

Non-contact high-precision signal switch

Technical Field

The utility model relates to a non-contact high-precision signal switch.

Background

The existing commonly used signal switch is divided into a contact type and a non-contact type, wherein the contact type switch mainly comprises a reed and a carbon film, the carbon film forms a resistor, and the reed slides on the carbon film to change the current of a circuit, so that different electric potentials are formed and different signals are generated. Due to contact and abrasion, the contact signal switch has a short service life and is poor in use effect in extreme environments, such as extremely cold environments, which may result in poor contact. The non-contact type is mainly realized by adopting a Hall chip and a magnet, and the magnet is usually close to or far away from the Hall chip by adopting a pressing mode, so that the potential level sent by the Hall chip is changed to obtain different signals. Although the service life of the non-contact signal switch with the structure is greatly prolonged and the tolerance of various environments is greatly improved, the non-contact signal switch with the structure has poor signal adjustment precision due to the adoption of a pressing mode, and is difficult to achieve uniform speed and realize the fixation of a plurality of pressing depths when a switch button is pressed, so that the non-contact signal switch is difficult to control and low in signal precision and can only accurately output two terminal value levels. The application range is narrow.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the non-contact high-precision signal switch is characterized in that the signal switch controls the output level in a rotating mode, the rotating process is stable, the signal adjusting precision is higher, more than two specific level values can be output, more than two different signals can be output, and the application range is wider.

In order to solve the technical problems, the utility model adopts the technical scheme that: a non-contact high-precision signal switch comprises a shell, wherein an installation cavity is formed in the shell, and a PCB is fixedly installed in the installation cavity.

As a preferred scheme, the Hall chip is connected to one side of the PCB back to the magnetic coil.

Preferably, the hall chip is located on the orthographic projection of the magnetic coil to the PCB.

Preferably, the housing comprises a base and a cover which are buckled with each other, and the through hole is formed in the base.

Preferably, the annular groove is formed in a surface, facing the PCB, of the mounting seat, and a bottom surface of the annular groove is parallel to a radial direction of the magnetic ring.

As a preferable scheme, one end of the magnetic coil closest to the PCB and one end of the magnetic coil farthest from the PCB are two poles of the magnetic coil respectively.

The utility model has the beneficial effects that: the utility model has the advantages that the magnetic ring is obliquely arranged, so that the distance between the magnetic ring and the Hall chip is changed when the magnetic ring rotates along with the rotating shaft, the influence of a magnetic field borne by the Hall chip is changed, the output level of the Hall chip is changed, the magnetic field intensity induced by the Hall chip is adjusted by rotating the rotating shaft and simultaneously driving the magnetic ring arranged on the rotating shaft, therefore, the operation is more stable, the magnetic ring can be stopped and kept static after rotating any angle, and the Hall chip can stably output various levels, namely various signals. The application range of the signal switch is greatly improved.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a perspective exploded view of the present invention;

FIG. 2 is a half-sectional view of the present invention;

in fig. 1 and 2: 1. the magnetic switch comprises a shell, 101, a base, 102, a cover body, 2, a mounting cavity, 3, a PCB (printed Circuit Board), 4, a through hole, 5, a rotating shaft, 6, a mounting seat, 7, an annular groove, 8, a magnetic ring, 9, a shifting handle, 10, a Hall chip, 11 and a lead.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the non-contact high-precision signal switch includes a housing 1, the housing 1 includes a base 101 and a cover 102, the base 101 and the cover 102 are fastened to each other, a mounting cavity 2 is provided inside the housing 1, a PCB 3 is fixedly installed in the mounting cavity 2, a through hole 4 is provided on a wall of the housing 1 facing the PCB 3, the through hole 4 is provided on the base 101, a rotating shaft 5 is rotatably connected to the through hole 4, the rotating shaft 5 is disposed perpendicular to the PCB 3, one end of the rotating shaft 5 is inserted into the mounting cavity 2 and is fixedly connected to a mounting seat 6, an annular groove 7 centering on the rotating shaft 5 is provided on the mounting seat 6, an annular magnetic ring 8 is embedded in the annular groove 7, the magnetic ring 8 is obliquely embedded in the annular groove 7, an axial direction of the magnetic ring 8 forms a certain angle with an axial direction of the rotating shaft 5, an angle is adjusted according to actual needs, the larger the angle is, when the rotating shaft 5 is rotated, the potential variation range of the hall chip 10 is larger, the smaller the angle is, the smaller the amplitude of the change in the potential of the hall chip 10 when the rotary shaft 5 is rotated is. The other end of the rotating shaft 5 extends out of the shell 1 and is connected with a shifting handle 9, a Hall chip 10 is arranged on the PCB 3, the Hall chip 10 is arranged on one side of the rotating shaft 5 and is opposite to the magnetic ring 8, a wire 11 is connected onto the PCB 3, and the wire 11 on the PCB 3 penetrates through the shell 1 and extends out of the shell 1. In order to improve the rotational stability of the rotating shaft 5, one end of the rotating shaft 5 located in the housing 1 may be extended forward, so that the rotating shaft 5 passes through the PCB and the housing 1 and is rotatably inserted into the wall of the housing 1 on the other side of the PCB 3.

In this embodiment, the hall chip 10 is preferably connected to a side of the PCB 3 opposite to the magnetic coil 8, so as to avoid the hall chip 10 interfering with the mounting seat 6, and simultaneously, the PCB can be used to shield the magnetic field at the end of the magnetic coil 8 far away from the hall chip 10, thereby improving the adjustment precision of the signal switch.

In the embodiment, the hall chip 10 is located on the orthographic projection of the magnetic coil 8 to the PCB 3, so that the hall chip 10 has the closest linear distance to the magnetic coil 8, and the sensing sensitivity of the hall chip 10 is improved.

The annular groove 7 is arranged on one surface of the mounting seat 6 facing the PCB 3, and the bottom surface of the annular groove 7 is parallel to the radial direction of the magnetic ring 8 so as to more stably scarf joint the magnetic ring 8.

And one end of the magnetic coil 8 closest to the PCB 3 and one end of the magnetic coil 8 farthest from the PCB 3 are two poles of the magnetic coil 8 respectively. Therefore, the difference between the maximum potential difference and the minimum potential difference generated by the Hall chip in the signal switch adjusting process can be increased, so that the difference between the corresponding potentials of all signals is increased, and the signal definition is improved.

The working process of the utility model is as follows: as shown in fig. 1 and 2, when the signal switch of the present invention is used, when the dial handle 9 needs to be toggled to drive the rotating shaft 5 to rotate, the rotating shaft 5 will drive the mounting seat 6 and the magnetic ring 8 embedded in the mounting seat to rotate, and in the rotating process, because the magnetic ring 8 is obliquely arranged, the linear distance between the hall chip 10 and the magnetic ring 8 changes accordingly, so that the magnetic field where the hall chip 10 is located changes, the potential difference generated by the hall chip 10 also changes, and the signal sent by the magnetic ring changes, therefore, the dial handle 9 can be toggled to enable the signal switch to send different signals, and the dial handle 9 can select a plurality of positioning points according to actual needs, thereby outputting a plurality of different signals. Compared with the traditional push type Hall signal switch, the signal switch provided by the utility model is more stable to operate, has large signal output quantity, and greatly improves the application range and the use stability of the signal switch.

The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments in use, and are not intended to limit the utility model; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.

Claims

1. A non-contact high-precision signal switch comprises a shell (1), wherein a mounting cavity (2) is arranged in the shell (1), and a PCB (3) is fixedly mounted in the mounting cavity (2), and is characterized in that a through hole (4) is formed in the shell wall of the PCB (3) in a right way, a rotating shaft (5) is rotatably connected in the through hole (4), the rotating shaft (5) is perpendicular to the PCB (3), one end of the rotating shaft (5) is inserted into the mounting cavity (2) and is fixedly connected with a mounting seat (6), an annular groove (7) taking the rotating shaft (5) as the center is formed in the mounting seat (6), an annular magnetic ring (8) is embedded in the annular groove (7), the magnetic ring (8) is obliquely embedded in the annular groove (7), the other end of the rotating shaft (5) extends out of the shell (1) and is connected with a shifting handle (9), and a Hall chip (10) is arranged on the PCB (3), this hall chip (10) set up in one side of pivot (5) and relative with magnetosphere (8), be connected with wire (11) on PCB board (3), wire (11) on PCB board (3) pass casing (1) and stretch out outside casing (1).

2. The contactless high-precision signal switch according to claim 1, characterized in that the hall chip (10) is connected to the side of the PCB board (3) facing away from the magnetic coil (8).

3. The contactless high-precision signal switch according to claim 2, characterized in that the hall chip (10) is located on the orthographic projection of the magnetic coil (8) to the PCB board (3).

4. The contactless high-precision signal switch according to claim 2, characterized in that the housing (1) comprises a base (101) and a cover (102) which are fastened to each other, and the through hole (4) is opened in the base (101).

5. The contactless high-precision signal switch according to claim 1, characterized in that the annular groove (7) is provided on a surface of the mounting seat (6) facing the PCB board (3), and a bottom surface of the annular groove (7) is parallel to a radial direction of the magnetic coil (8).

6. The contactless high-precision signal switch according to claim 1, wherein the end of the magnetic coil (8) closest to the PCB board (3) and the end of the magnetic coil (8) farthest from the PCB board (3) are two poles of the magnetic coil (8), respectively.