CN212627841U

CN212627841U - Hall microswitch

Info

Publication number: CN212627841U
Application number: CN202021647981.6U
Authority: CN
Inventors: 陆玉成; 李纯春; 刘江
Original assignee: Chongqing Qiena Technology Co ltd
Current assignee: Chongqing Qiena Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-02-26
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a Hall microswitch, which comprises a shell, an elastic part, a Hall element, a circuit board and a magnetic slider, wherein a first holding tank and a second holding tank which are not communicated with each other are formed in the shell, and the elastic part and the magnetic slider are both arranged in the first holding tank; the circuit board is fixedly installed in the second accommodating groove, the Hall element is installed on one side of the upper surface of the circuit board, and the other side of the circuit board is connected with an external circuit. The Hall microswitch provided by the utility model utilizes the Hall effect to lead the external circuit to generate certain current change in the moving process of the magnetic slider, and utilizes the current change to replace the traditional structure that the spring piece and the fixed contact are in quick contact to complete the switching-on or switching-off operation, thereby avoiding the fatigue failure of the spring piece and effectively prolonging the service life of the microswitch; in addition, the dustproof, shockproof and anti-interference device has certain dustproof, shockproof and anti-interference effects.

Description

Hall microswitch

Technical Field

The utility model relates to an electrical apparatus switch technical field, especially a hall micro-gap switch.

Background

The microswitch is a switch which has a minute contact interval and a quick action mechanism, performs a switching action by a specified stroke and a specified force, is covered by a shell, and has a driving rod outside.

The conventional microswitch generally adopts a spring piece as a force secondary transmission module, and the spring piece is in quick contact with a fixed contact to complete the on-off operation; however, after the elastic sheet is used for a period of time, the contact is gradually insensitive due to the insufficient elastic force or the elastic sheet is suddenly broken and cannot be broken or used, so that the service life of the microswitch is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a hall micro-gap switch to solve among the prior art micro-gap switch life short, the unstable problem of working property.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a Hall microswitch comprises a shell, an elastic piece, a Hall element, a circuit board and a magnetic slider, wherein a first accommodating groove and a second accommodating groove which are not communicated with each other are formed in the shell, the elastic piece and the magnetic slider are both arranged in the first accommodating groove, and the magnetic slider can move left and right in the first accommodating groove under the action of the elastic piece and external pressure; the circuit board is fixedly arranged in the second accommodating groove, one side of the upper surface of the circuit board is provided with the Hall element, and the other side of the upper surface of the circuit board is connected with an external circuit; when the magnetic slider moves along the direction in which the elastic piece is compressed under the action of external force, the magnetic slider gradually moves away from the Hall element, and the current on the circuit board changes.

Preferably, the elastic member is a spring.

Preferably, the casing is including fixed lid and fixing base, first holding tank with the second holding tank all sets up in the fixing base, just fixed lid with the fixing base joint is fixed.

Preferably, the magnetic slider comprises a slider body, a cylindrical protrusion is formed on one side of the slider body facing the elastic piece, and the elastic piece is sleeved on the cylindrical protrusion; a wedge-shaped limiting block is further formed on the upper surface of the sliding block body.

Preferably, the shell is provided with a viewing port at a position corresponding to the side wall of the elastic member.

The utility model has the advantages that: the Hall microswitch provided by the utility model utilizes the Hall effect to lead the external circuit to generate certain current change in the moving process of the magnetic slider, and utilizes the current change to replace the traditional structure that the spring piece and the fixed contact are in quick contact to complete the switching-on or switching-off operation, thereby avoiding the fatigue failure of the spring piece and effectively prolonging the service life of the microswitch; in addition, the dustproof, shockproof and anti-interference device has certain dustproof, shockproof and anti-interference effects.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;

fig. 3 is a schematic structural diagram of the circuit board of the present invention;

fig. 4 is a schematic structural view of the fixing cover of the present invention;

FIG. 5 is a schematic structural view of the fixing base of the present invention;

fig. 6 is a schematic structural view of the middle magnetic slider of the present invention.

Description of reference numerals:

1. a housing; 11. a fixed cover; 12. a fixed seat; 2. an elastic member; 3. a Hall element; 4. a circuit board; 5. a magnetic slider; 51. a slider body; 52. a cylindrical bulge; 53. a wedge-shaped limiting block; 6. an external circuit; 7. a viewing port; 8. a first accommodating groove; 9. and a second accommodating groove.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Referring to fig. 1 to 6, a hall microswitch includes a housing 1, an elastic member 2, a hall element 3, a circuit board 4 and a magnetic slider 5, wherein a first accommodating groove 8 and a second accommodating groove 9 which are not communicated with each other are formed in the housing 1, the elastic member 2 and the magnetic slider 5 are both installed in the first accommodating groove 8, and the magnetic slider 5 can move left and right in the first accommodating groove 8 under the action of the elastic member 2 and external pressure; the circuit board 4 is fixedly arranged in the second accommodating groove 9, one side of the upper surface of the circuit board is provided with the Hall element 3, and the other side of the upper surface of the circuit board is connected with an external circuit 6; when the magnetic slider 5 moves along the direction in which the elastic member 2 is compressed under the action of an external force, the magnetic slider gradually moves away from the hall element 3, and the current on the circuit board 4 changes.

In the illustrated embodiment, the elastic member 2 can be a spring, the hall element 3 is fixedly mounted on the right side of the circuit board 4, and the left side of the circuit board 4 is communicated with the external circuit 6; during initial state, magnetism slider 5 is located hall element 3 directly over, when magnetism slider 5 slides left under the exogenic action, the spring is compressed gradually, magnetism slider 5 keeps away from with hall element 3 gradually, under the effect of hall effect, thereby make the external current size change, thereby utilize this current change fungible traditional spring leaf and fixed contact to take place the structure that the quick contact accomplished the switch-on or the disconnection operation, the fatigue failure of spring leaf has been avoided appearing, thereby can effectively improve micro-gap switch's life.

In particular, the alarm device can be applied to an alarm system of a front row seat of an automobile; in the initial state, because the magnetic slider 5 is positioned at the rightmost end, the magnetic flux on the Hall element 3 is the largest, the current of the external circuit 6 is larger, the state is a conducting state, the front row seat prompts alarming, after the safety belt of the front row seat is inserted, the magnetic slider 5 is driven to the left side, the magnetic flux on the Hall element 3 is reduced, the current of the external circuit 6 is reduced to a disconnecting state, and the front row seat stops alarming. Overall structure is simple, and life is high, still has dustproof shockproof anti-interference effect simultaneously.

In the embodiment, some hall elements with small size can be installed in the middle of the circuit board 4, and in the process that the magnetic slider 5 gradually slides leftwards, due to the fact that the hall elements 3 are different in size, magnetic fluxes penetrating through the hall elements are also different, and corresponding effects can be achieved.

Referring to fig. 4 and 5, in this embodiment, the housing 1 includes a fixed cover 11 and a fixed base 12, the first accommodating groove 8 and the second accommodating groove 9 are both disposed in the fixed base 12, the fixed cover 11 is fixed to the fixed base 12 in a clamping manner, specifically, a clamping hook is disposed on the fixed cover 11, and a clamping groove corresponding to the clamping hook is disposed on the fixed base 12. A fixed lid 11 of joint on fixing base 12 further improves the dustproof effect of fixing base 12, avoids inside dust impurity gets into fixing base 12 to can improve the life and the effect of inside circuit board 4.

As shown in fig. 6, in this embodiment, the magnetic slider 5 includes a slider body 51, the slider body 51 is a substantially rectangular block, a cylindrical protrusion 52 is formed on one side of the slider body 51 facing the elastic member 2, and the spring can be sleeved on the cylindrical protrusion 52, so as to facilitate fixing of the spring; the upper surface of the slider body 51 is further formed with a wedge-shaped stopper 53, so that the spring and the magnetic slider 5 are fixed in the first accommodation groove in a limited manner. An observation port 7 is formed in the side wall of the shell 1 corresponding to the elastic piece 2 and can be used for observing the tool state of the internal spring.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A Hall microswitch is characterized in that: the magnetic sliding plate comprises a shell (1), an elastic piece (2), a Hall element (3), a circuit board (4) and a magnetic sliding block (5), wherein a first accommodating groove (8) and a second accommodating groove (9) which are not communicated with each other are formed in the shell (1), the elastic piece (2) and the magnetic sliding block (5) are both installed in the first accommodating groove (8), and the magnetic sliding block (5) can move left and right in the first accommodating groove (8) under the action of the elastic piece (2) and external pressure; the circuit board (4) is fixedly arranged in the second accommodating groove (9), one side of the upper surface of the circuit board is provided with the Hall element (3), and the other side of the upper surface of the circuit board is connected with an external circuit (6); when the magnetic sliding block (5) moves along the direction in which the elastic piece (2) is compressed under the action of external force, the magnetic sliding block gradually gets away from the Hall element (3), and the current on the circuit board (4) changes.

2. The hall microswitch of claim 1, wherein: the elastic piece (2) is a spring.

3. The hall microswitch of claim 1, wherein: casing (1) is including fixed lid (11) and fixing base (12), first holding tank (8) with second holding tank (9) all set up in fixing base (12), just fixed lid (11) with fixing base (12) joint is fixed.

4. The hall microswitch of claim 1, wherein: the magnetic slider (5) comprises a slider body (51), a cylindrical bulge (52) is formed on one side, facing the elastic piece (2), of the slider body (51), and the elastic piece (2) is sleeved on the cylindrical bulge (52); the upper surface of the slider body (51) is also provided with a wedge-shaped limiting block (53).

5. The hall microswitch of claim 1, wherein: an observation port (7) is formed in the shell (1) at the position corresponding to the side wall of the elastic piece (2).