CN218603474U

CN218603474U - Contactless hall inductive switch

Info

Publication number: CN218603474U
Application number: CN202220494181.8U
Authority: CN
Inventors: 沈苏云; 颜华; 周冬艳
Original assignee: Metabowerke GmbH and Co
Current assignee: Metabowerke GmbH and Co
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2023-03-10
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to a contactless hall inductive switch relates to contactless switch's field, and it includes switch body structure, but is equipped with the bar magnet of PCB board and relative PCB board removal in the switch body structure, is equipped with the in-phase amplifier circuit that is used for detecting the hall components and parts IC1 and the electric connection hall components and parts IC1 output of bar magnet on the PCB board. The utility model discloses output stable continuous linear signal, no friction, the event life-span is longer, and the antidetonation effect is more excellent.

Description

Contactless hall inductive switch

Technical Field

The utility model belongs to the technical field of contactless switch's technique and specifically relates to a contactless hall inductive switch is related to.

Background

The existing electrodeless signal outputs a continuous linear signal in a carbon film sliding variable resistance mode or outputs a continuous linear signal in a series resistance mode. They are all contact sliding, and when the electric tool generates strong vibration, the linear signal is interrupted. And the non-contact Hall inductive switch can well solve the problem of linear signal interruption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the non-contact inductive switch outputs stable and continuous linear signals, has no friction, and therefore has longer service life and better anti-seismic effect.

In order to achieve the aim, the technical scheme of the utility model a contactless hall inductive switch is provided, including switch body structure, be equipped with the PCB board in the switch body structure and can be relative the bar magnet that the PCB board removed, be equipped with on the PCB board and be used for detecting the hall components and parts IC1 and the electricity of bar magnet are connected the cophase amplifier circuit of hall components and parts IC1 output.

Preferably, the length direction of the magnetic rod is parallel to the plane of the PCB, and a gap is formed between the magnetic rod and the PCB.

Preferably, the PCB is fixedly connected to the switch body structure, and the magnetic rod is connected to the switch body structure in a sliding manner.

Preferably, the magnetic bar slides relative to the PCB along the length direction of the magnetic bar.

Preferably, a spring mechanism is further arranged in the switch body structure, the spring mechanism is located in the length direction of the magnetic rod, one end of the spring mechanism is abutted to the inner wall of the switch body structure, and the other end of the spring mechanism is abutted to one end of the magnetic rod.

Preferably, a switch push rod device is arranged on one side of the switch body structure, the switch push rod device is partially arranged in the switch body structure in a penetrating mode and connected with the magnetic rod, and the switch push rod device can slide relative to the switch body structure along the length direction of the magnetic rod.

Preferably, the input end of the hall element IC1 is supplied with a working voltage, and the input end and/or the output end of the hall element IC1 are grounded through a capacitor.

Preferably, a fixing groove for placing the PCB and a magnetic bar sliding groove for placing the magnetic bar are arranged in the switch body structure.

To sum up, the utility model discloses a following beneficial technological effect:

1. the non-contact inductive switch outputs stable and continuous linear signals without friction, so that the service life is longer and the anti-seismic effect is better;

2. the Hall sensing component is fixed in the switch, and then a continuous linear signal is inductively output to the MCU to control the rotating speed of the motor through the magnetic rod sliding on the switch.

Drawings

Fig. 1 is a side view of the interior of the switch body structure of the present invention;

fig. 2 is a top view of the interior of the switch body structure of the present invention;

FIG. 3 is a circuit diagram corresponding to the PCB board of the present invention;

fig. 4 is a model diagram of the PCB of the present invention.

Reference numerals: 1. a switch body structure; 2. a magnetic bar; 21. a magnetic bar chute; 3. a PCB board; 31. fixing grooves; 4. a spring mechanism.

Detailed Description

The present invention will be described in further detail with reference to fig. 1 to 4.

The embodiment of the utility model discloses a contactless Hall inductive switch, the utility model comprises a switch body structure 1, a PCB 3 is fixedly arranged in the switch body structure 1, a magnetic bar 2 is arranged in a sliding way, a magnetic bar chute 21 for placing the magnetic bar 2 and a fixing groove 31 for placing the PCB 3 are correspondingly arranged in the switch body structure 1; the length direction of the magnetic bar 2 is parallel to the plane of the PCB 3 and a certain gap is arranged between the magnetic bar and the PCB; after the PCB 3 is covered by the switch body structure 1, leading out terminal wires; the PCB 3 is provided with a Hall component IC1 for detecting the magnetic bar 2 and an in-phase amplifying circuit electrically connected with the Hall component IC 1.

The utility model relates to a response components and parts such as hall components and parts IC1 and bar magnet 2 need the signal syntropy to enlarge the back output simultaneously and stabilize continuous linear signal. The non-contact Hall inductive switch is mainly characterized in that a mechanical sliding mode is adopted, a signal is conducted to a Hall component IC1 on a PCB (printed circuit board) 3 through a magnetic bar 2, then the signal is amplified through an in-phase amplifying circuit, and a process of converting the mechanical sliding mode into an electronic analog signal to be output is achieved.

The circuit on the PCB 3 is provided with three ports of a 3V3 end, an OUTPUT end and a GND end, and the circuit comprises a Hall element IC1 and a non-inverting amplifier IC2. The input end of the Hall component IC1 is electrically connected with the 3V3 end, and the input end is grounded through a first capacitor C1; the output end of the Hall component IC1 is electrically connected with the non-inverting input end of the non-inverting amplifier IC2, and the output end of the Hall component IC1 is grounded through a second capacitor C2. The OUTPUT end of the in-phase amplifier IC2 is electrically connected with an OUTPUT end, and the OUTPUT end of the in-phase amplifier IC2 is also grounded after being sequentially connected with a first resistor R1 and a second resistor R2 in series; the inverting input terminal of the non-inverting amplifier IC2 is electrically connected to one end of the first resistor R1 near the second resistor R2.

The switch body structure 1 is internally provided with a spring mechanism 4, the spring mechanism 4 is positioned in the length direction of the magnetic rod 2, one end of the spring mechanism is abutted to the inner wall of the switch body structure 1, and the other end of the spring mechanism is abutted to one end of the magnetic rod 2, so that the spring mechanism can be used for resetting the magnetic rod 2.

Switch body structure 1 one side is equipped with switch push rod device, and switch push rod device slides with switch body structure 1's shell and is connected, and 2 relatively fixed with bar magnet to be located bar magnet 2 and keep away from spring mechanism 4 one side. The stroke action of accessible switch push rod drives bar magnet 2 and slides relative PCB board 3 and hall components and parts IC1, just can make hall components and parts IC1 on the PCB board 3 detect weak signal of telecommunication, then carries out the one-level and enlargies, output linear signal.

The utility model discloses a non-contact hall inductive switch can solve the intermittent condition of linear signal well, and the stable continuous linear signal of output, no friction, so the life-span is longer, and the antidetonation effect is more excellent.

Above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present invention.

Claims

1. A contactless Hall inductive switch, characterized in that: including switch body structure (1), be equipped with PCB board (3) in switch body structure (1) and can be relative bar magnet (2) that PCB board (3) removed, be equipped with on PCB board (3) and be used for detecting hall components and parts IC1 and the electricity of bar magnet (2) are connected the cophase amplifier circuit of hall components and parts IC1 output.

2. The contactless hall-effect switch of claim 1 wherein: the length direction of the magnetic bar (2) is parallel to the plane of the PCB (3), and a gap is arranged between the magnetic bar (2) and the PCB (3).

3. The contactless hall sensor switch of claim 2 wherein: the PCB (3) is fixedly connected with the switch body structure (1), and the magnetic bar (2) is connected with the switch body structure (1) in a sliding manner.

4. The contactless hall sensor switch of claim 3 wherein: the magnetic bar (2) slides relative to the PCB (3) along the length direction of the magnetic bar.

5. The contactless hall sensor switch of claim 4 wherein: still be equipped with spring mechanism (4) in switch body structure (1), spring mechanism (4) are in bar magnet (2) length direction, and one end butt the inner wall of switch body structure (1), the other end butt one end of bar magnet (2).

6. The contactless hall-effect switch of claim 4 wherein: the switch is characterized in that a switch push rod device is arranged on one side of the switch body structure (1), the switch push rod device is partially arranged in a penetrating mode in the switch body structure (1) and connected with the magnetic rod (2), and the switch push rod device can slide along the length direction of the magnetic rod (2) relative to the switch body structure (1).

7. The contactless hall-effect switch of claim 1 wherein: the input end of the Hall component IC1 is supplied with working voltage, and the input end and/or the output end of the Hall component IC1 are grounded through a capacitor.

8. The contactless hall-effect switch of claim 1 wherein: the switch is characterized in that a fixing groove (31) for placing the PCB (3) and a magnetic bar sliding groove (21) for placing the magnetic bar (2) are formed in the switch body structure (1).