CN112436833A

CN112436833A - Contactless gear-playing switch locked by magnetic force

Info

Publication number: CN112436833A
Application number: CN202011336272.0A
Authority: CN
Inventors: 李云方; 杨阳; 程千爽
Original assignee: Nanjing Ah Electronic Science & Technology Co ltd
Current assignee: Nanjing Ah Electronic Science & Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-02

Abstract

The invention discloses a contactless gear-shifting switch locked by magnetic force, which comprises a shell and a rocking handle capable of swinging, wherein one end of the rocking handle is an operating end, the other end of the rocking handle is provided with a magnet which is magnetized along the length direction, the shell close to one end of the magnet is provided with a first magnetic part, the shell close to the other end of the magnet is provided with a second magnetic part, the swinging position of the rocking handle is locked by the attraction between the magnet and the first magnetic part or the second magnetic part, and the side surface of the magnet is provided with a magnetic induction element. The invention uses the attraction between the magnets as the binding force of the holding state of the play switch, replaces the reed contact structure of the common play switch, and has the characteristics of no metal fatigue, simple structure and the like; the invention uses the magnetic sensitive element with two output states to sense the change of the play position of the play switch and non-contact sense the change of the state of the play switch, thereby greatly prolonging the service life of the switch and leading the output waveform to have no oscillation interference when the traditional contact is contacted.

Description

Contactless gear-playing switch locked by magnetic force

Technical Field

The invention belongs to the technical field of switches, particularly relates to a gear-playing switch, and particularly relates to a non-contact gear-playing switch locked by magnetic force.

Background

The current mechanical gear-shifting switch has the common phenomena of short service life, unclear gear-shifting position, friction and oscillation generated during contact of a mechanical contact, incapability of locking the position in the later life, poor contact and the like. The mechanical gear shifting switch principle mainly uses mechanical friction force as locking force of a gear shifting position, and uses metal contact as a conduction path. After the gear shifting switch is repeatedly operated for a certain number of times, the friction force for locking the gear shifting position is sharply reduced, the gear shifting position is not clear, and the gear shifting switch cannot be locked. The traditional mechanical gear-playing switch is inevitably used for a certain number of times.

Disclosure of Invention

In view of the above problems in the prior art, the present invention provides a contactless broadcast switch that is locked by magnetic force.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a contactless utilizes broadcast shelves switch of magnetic force lock status, includes the casing, wobbling rocking handle, the one end of rocking handle is the control end, and the magnet of magnetizing along length direction is installed to the other end, is close to install first magnetic part on the casing of magnet one end, be close to install second magnetic part on the casing of the magnet other end, through attractive force between magnet and first magnetic part or the second magnetic part locks the swing position of rocking handle, the side of magnet is provided with magnetic induction element.

Further, the first magnetic part and/or the second magnetic part is a soft or permanent magnet.

Furthermore, the magnetic induction element outputs different states when different magnetic poles are close to each other.

Furthermore, the magnetic induction element is a Hall circuit or a magneto resistor.

Furthermore, the casing includes an inner chamber, the top of inner chamber is provided with the through-hole, be provided with the axis of rotation on the casing of through-hole position, the rocking handle rotationally installs in the axis of rotation.

Furthermore, the first magnetic part and the second magnetic part are fixedly arranged on the outer wall of the shell.

Further, the movement position of the rocking handle includes a first locking position and a second locking position, and a low level is output when the rocking handle is located at the first locking position, and a high level is output when the rocking handle is located at the second locking position.

Compared with the prior art, the invention has the beneficial effects that:

the invention uses the attraction between the magnets as the binding force of the holding state of the play switch, replaces the reed contact structure of the common play switch, and has the characteristics of no metal fatigue, simple structure and the like; the invention uses the magnetic sensitive element with two output states to sense the change of the play position of the play switch and non-contact sense the change of the state of the play switch, thereby greatly prolonging the service life of the switch and leading the output waveform to have no oscillation interference when the traditional contact is contacted.

Drawings

FIG. 1 is a schematic view of the present invention in a first locked position;

FIG. 2 is a schematic view of the present invention in a second locked position;

FIG. 3 is a schematic diagram of an implementation in which the magnetic components employ soft magnetism;

FIG. 4 is a schematic diagram of a first implementation of a magnetic component using permanent magnets;

fig. 5 is a schematic diagram of another implementation in which the magnetic component employs permanent magnets.

The labels in the figure are: 1. a first magnetic member; 2. a rotating shaft; 3. a rocking handle; 4. a housing; 5. a magnetic induction element; 6. a second magnetic member; 7. a magnet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment provides a contactless broadcast switch using a magnetic locking state as shown in fig. 1-2. This play shelves switch includes casing 4, wobbling rocking handle 3, and the one end of rocking handle 3 is the control end, and magnet 7 along length direction magnetization is installed to the other end, installs first magnetic part 1 on the casing 4 that is close to magnet 7 one end, is close to install second magnetic part 6 on the casing 4 of the magnet 7 other end, locks rocking handle 3's swing position through the appeal between magnet 7 and first magnetic part 1 or the second magnetic part 6, and the side of magnet 7 is provided with magnetic induction element 5.

In the embodiment, the attraction force between the magnets is used as the binding force of the holding state of the gear-playing switch, so that a reed contact structure of a common gear-playing switch is replaced, and the gear-playing switch has the characteristics of no metal fatigue, simple structure and the like; the embodiment uses the magnetic sensing element with two output states to sense the change of the gear position of the gear-shifting switch, and senses the change of the state of the gear-shifting switch in a non-contact way, so that the service life of the switch is greatly prolonged, and the output waveform has no oscillation interference when the traditional contact is contacted.

In this embodiment, the housing 4 includes an inner cavity, a through hole is formed at the top of the inner cavity, the rotating shaft 2 is disposed on the housing 4 near the through hole, and the rocking handle 3 is rotatably mounted on the rotating shaft 2. The first magnetic part 1 and the second magnetic part 6 are fixedly arranged on the outer wall of the shell 4. The magnetic induction element 5 is arranged against the wall of the housing 4, preferably aligned with the intermediate position of oscillation of the magnet 7.

In this embodiment, the first magnetic component 1 and/or the second magnetic component 6 are soft or permanent magnets. When the first magnetic component 1 and/or the second magnetic component 6 are soft magnets and the magnet 7 is close to the first magnetic component 1, the attractive force between the permanent magnet and the soft magnets is used as a locking force, the action principle of the locking force is shown in fig. 3, and the locking effect can be formed by any direction of the middle magnet 7. When the first magnetic part 1 and/or the second magnetic part 6 are permanent magnets, it is necessary that the magnetic pole relationship between the first magnetic part 1 and/or the second magnetic part 6 and the magnet 7 is an opposite magnetic pole relationship, and the attraction force between the opposite polarities of the permanent magnets is used as a locking force, as shown in fig. 4-5, and a strong attraction force is formed by using the principle that the opposite polarities of the permanent magnets attract each other. The soft magnet has weaker acting force but low cost, and the permanent magnet has higher cost but strong acting force and better locking effect.

In this embodiment, the magnetic induction element 5 is a hall circuit (e.g., a bipolar latch hall circuit) or a magnetic resistor that outputs different states when different magnetic poles are close to each other, and outputs a high level when the magnetic pole N is close to each other and outputs a low level when the magnetic pole S is close to each other

The movement positions of the rocking handle 3 in the present invention include a first locking position and a second locking position.

As shown in fig. 1, when the rocking handle 3 is pushed from the left side to the right side to rotate along the rotating shaft 2, the N pole of the magnet 7 at the lower end of the rocking handle 3 approaches the first magnetic member 1, and the attraction force generated is larger than the attraction force between the S pole of the magnet 7 at the lower end of the rocking handle 3 and the second magnetic member 6, and a first locking position is formed, in which the S pole of the magnet 7 approaches the magnetic induction element 5 to output a low level.

When the user pushes the handle 3 from the right side to the left side to rotate along the rotation shaft 2 as shown in fig. 2, the S pole of the magnet 7 at the lower end of the handle 3 approaches the second magnetic member 6, and the attraction force generated is larger than the attraction force between the N pole of the magnet 7 at the lower end of the handle 3 and the first magnetic member 1, and the lock state 2 is formed, in which the N pole of the magnet 7 and the magnetic induction element 5 approach the output high level.

The sensor of the invention uses magnetic force as broadcast locking force and uses magnetic sensor integrated circuit capable of identifying different polarities of magnetic field as signal output medium. The gear-playing position is locked by magnetic force, the phenomenon of unclear gear or poor contact is avoided, the magnetic sensor integrated circuit is used as an output medium, signals are stable when the gear-playing position is changed, no contact oscillation signal exists, and the gear-playing key is a more suitable solution on occasions with high use frequency and long service life.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a contactless utilizes broadcast shelves switch of magnetic force lock status, its characterized in that, includes casing (4), wobbling rocking handle (3), the one end of rocking handle (3) is the control end, and magnet (7) that magnetize along length direction are installed to the other end, are close to install first magnetic part (1) on casing (4) of magnet (7) one end, are close to install second magnetic part (6) on casing (4) of magnet (7) other end, through attractive force between magnet (7) and first magnetic part (1) or second magnetic part (6) locks the swing position of rocking handle (3), the side of magnet (7) is provided with magnetic induction element (5).

2. A contactless magnetically latched state player switch according to claim 1, characterized in that the first magnetic part (1) and/or the second magnetic part (6) is soft or permanent magnet.

3. A contactless magnetic latching position switch according to claim 1, wherein the magnetic induction element (5) outputs different states when different magnetic poles are close to each other.

4. A contactless magnetically latched state player switch according to claim 3, characterized in that the magnetic induction element (5) is a hall circuit or a magneto resistor.

5. The contactless magnetically-locked motion switch according to claim 1, wherein the housing (4) includes an inner cavity, a through hole is formed at the top of the inner cavity, the housing (4) at the position of the through hole is provided with the rotating shaft (2), and the rocking handle (3) is rotatably mounted on the rotating shaft (2).

6. A contactless magnetically-locked play switch according to claim 5, wherein the first magnetic member (1) and the second magnetic member (6) are fixedly mounted to the outer wall of the housing (4).

7. A contactless magnetically latched-state play switch according to claim 1, wherein the moving positions of the rocking handle (3) include a first latching position in which a low level is outputted and a second latching position in which a high level is outputted.