CN220895408U

CN220895408U - Contactless switch device

Info

Publication number: CN220895408U
Application number: CN202322608085.9U
Authority: CN
Inventors: 王江华; 杨术国; 赵建华
Original assignee: Beijing Hede Aerospace Technology Co ltd
Current assignee: Beijing Hede Aerospace Technology Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-05-03
Anticipated expiration: 2033-09-25

Abstract

The utility model relates to the technical field of switches, and particularly discloses a non-contact switch device which comprises a shell, a circuit board, a magnetic switch assembly and an external magnet, wherein the shell is arranged on the circuit board; the circuit board is arranged in the shell and connected with the shell, and the magnetic switch assembly is arranged on the circuit board; the magnetic switch assembly comprises a first soft magnetic part and a second soft magnetic part, wherein the first soft magnetic part and the second soft magnetic part are both connected to the circuit board, the magnetic properties of the first soft magnetic part and the second soft magnetic part are different, and the external magnet is used for magnetizing the first soft magnetic part and the second soft magnetic part. According to the utility model, the magnetization and demagnetization of the first soft magnetic part and the second soft magnetic part are controlled by the approaching and separating of the external magnet, so that an additional opening for a magnetic switch assembly is not required to be arranged on the shell, the waterproof grade of the shell is further improved, the non-contact switch device has strong external interference resistance, can work normally in a complex environment, and has longer service life and lower maintenance cost.

Description

Contactless switch device

Technical Field

The utility model relates to the technical field of switches, in particular to a non-contact switching device.

Background

A switch refers to an element used in an electronic device to contact, open, and switch a circuit. The principle of the switch is that when two contact points are closed, the circuit is indicated to be conducted, and current is allowed to flow; when the two contacts are open, the circuit is not conductive, and no current is allowed to flow.

Most of the existing switches are mechanical switches or touch switches. For a mechanical switch, holes are punched or reserved on the equipment, and the waterproof effect is achieved by means of a sealing ring or a sealing gasket, however, for equipment with high IP waterproof grade requirements, the waterproof effect still cannot meet the use requirements; for the touch switch, the requirement on the environment is high, if water stains or oil stains possibly cause the switch to malfunction, and the maintenance cost is high.

Disclosure of utility model

The utility model aims to provide a contactless switch device, which solves the problems that the waterproof effect level of a switch in the prior art cannot meet the requirement, the working requirement is higher in a complex environment, and the maintenance cost is higher.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The present utility model provides a contactless switching device including:

a housing and a circuit board disposed in the housing;

The magnetic switch assembly is arranged on the circuit board; the magnetic switch assembly comprises a first soft magnetic part and a second soft magnetic part, and the first soft magnetic part and the second soft magnetic part are connected to the circuit board; the first soft magnetic member and the second soft magnetic member have different magnetic properties;

and the external magnet is used for magnetizing the first soft magnetic piece and the second soft magnetic piece so as to enable the first soft magnetic piece and the second soft magnetic piece to be mutually adsorbed.

As an alternative to the contactless switch device, the magnetic switch assembly further includes a glass case, a first pin terminal, and a second pin terminal; the glass shell is provided with a closed cavity, and the first soft magnetic piece and the second soft magnetic piece are both arranged in the closed cavity; one end of the first pin terminal is connected to the circuit board, and the other end of the first pin terminal penetrates through the glass shell to be connected to the first soft magnetic piece; one end of the second pin terminal is connected to the circuit board, and the other end of the second pin terminal penetrates through the glass shell to be connected to the second soft magnetic piece.

As an alternative to the contactless switch device, the first pin terminal and the second pin terminal are disposed so as to face each other in a horizontal direction at a portion located in the closed cavity.

As an alternative of the contactless switch device, the magnetic switch assembly further includes a package case, the glass case is disposed in the package case, and the package case is disposed on the circuit board.

As an alternative to the contactless switch device, the package case and the glass case are both flat structures.

As an alternative to the contactless switch device, the package is a plastic case.

As an alternative to the contactless switch device, the magnetic switch assembly is disposed between the circuit board and the housing.

As an alternative to the contactless switching device, the magnetic switching assembly is arranged adjacent to the housing.

As an alternative to the contactless switch device, the contactless switch device further includes a connector, and the circuit board is detachably connected to the housing through the connector.

As an alternative to the contactless switch device, a handle is provided on the external magnet.

The beneficial effects of the utility model are as follows:

The contactless switch device comprises a shell, a circuit board, a magnetic switch component and an external magnet. The circuit board is arranged in the shell, and the magnetic switch component is arranged on the circuit board, so that the shell can protect the circuit board and the magnetic switch component. The magnetic switch assembly comprises a first soft magnetic part and a second soft magnetic part, the first soft magnetic part and the second soft magnetic part are connected to a circuit board, the magnetism of the first soft magnetic part and the magnetism of the second soft magnetic part are different, the external magnet is used for magnetizing the first soft magnetic part and the second soft magnetic part so that the first soft magnetic part and the second soft magnetic part are mutually adsorbed, the circuit is communicated through the magnetic switch assembly, after the external magnet is removed, the first soft magnetic part and the second soft magnetic part are demagnetized and separated, the circuit is disconnected, and because the magnetization and the demagnetization of the first soft magnetic part and the second soft magnetic part are controlled by the approaching and the separating of the external magnet, the external magnet is not required to be provided with an additional opening for the magnetic switch assembly, the waterproof level of the shell is improved, the non-contact switch device has strong external interference resistance, can normally work under a complex environment, the service life is longer, and the maintenance cost is lower.

Drawings

Fig. 1 is a cross-sectional view of a contactless switching device according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of a circuit board and a magnetic switch assembly according to an embodiment of the present utility model.

In the figure:

1. A housing; 2. a circuit board; 3. a magnetic switch assembly; 31. a first soft magnetic member; 32. a second soft magnetic member; 33. a glass shell; 331. sealing the cavity; 34. a first pin terminal; 35. a second pin terminal; 36. packaging the shell; 4. an external magnet; 41. a handle; 5. and a connecting piece.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The embodiment provides a contactless switch device for controlling on-off of a circuit.

As shown in fig. 1 and 2, the contactless switching device includes a housing 1, a circuit board 2, a magnetic switching assembly 3, and an external magnet 4. The circuit board 2 is arranged in the shell 1, and the magnetic switch component 3 is arranged on the circuit board 2, so that the shell 1 can protect the circuit board 2 and the magnetic switch component 3. Specifically, the contactless switch device further comprises a connecting piece 5, and the circuit board 2 is detachably connected to the housing 1 through the connecting piece 5, so that the circuit board 2 and the magnetic switch assembly 3 are convenient to replace or maintain integrally, and the service life of the contactless switch device is prolonged.

The magnetic switch assembly 3 includes a first soft magnetic member 31 and a second soft magnetic member 32, the first soft magnetic member 31 and the second soft magnetic member 32 are both connected to the circuit board 2, and the magnetism of the first soft magnetic member 31 and the magnetism of the second soft magnetic member 32 are different, the external magnet 4 is used for magnetizing the first soft magnetic member 31 and the second soft magnetic member 32, so that the first soft magnetic member 31 and the second soft magnetic member 32 are attracted to each other, the communication of the circuit is realized through the magnetic switch assembly 3, after the external magnet 4 is removed, the first soft magnetic member 31 and the second soft magnetic member 32 are demagnetized and separated, and then the disconnection of the circuit is realized, and as the magnetization and the demagnetization of the first soft magnetic member 31 and the second soft magnetic member 32 are controlled by the approaching and separating of the external magnet 4, the external magnet 1 does not need to be provided with an additional opening for magnetizing the magnetic switch assembly 3, so that the waterproof level of the external shell 1 is improved, and the non-contact switch device has strong anti-external interference capability, can normally work under complex environment, and has a longer service life and lower maintenance cost. Optionally, the external magnet 4 is provided with a handle 41, so that a worker can move the external magnet 4 through the handle 41, and the magnetic property of the external magnet 4 is prevented from being affected by direct contact with the external magnet 4.

Specifically, the magnetic switch assembly 3 further includes a glass shell 33, a first pin terminal 34 and a second pin terminal 35, the glass shell 33 has a closed cavity 331, and the first soft magnetic member 31 and the second soft magnetic member 32 are all disposed in the closed cavity 331, so that the first soft magnetic member 31 and the second soft magnetic member 32 are protected by the glass shell 33, and the first soft magnetic member 31 and the second soft magnetic member 32 are prevented from being oxidized to affect magnetism, so that the first soft magnetic member 31 and the second soft magnetic member 32 fail in function. Wherein, one end of the first pin terminal 34 is connected to the circuit board 2, the other end of the first pin terminal 34 is connected to the first soft magnetic member 31 through the glass shell 33, one end of the second pin terminal 35 is connected to the circuit board 2, and the other end of the second pin terminal 35 is connected to the second soft magnetic member 32 through the glass shell 33, so that the first soft magnetic member 31 and the second soft magnetic member 32 in the glass shell 33 can be connected to the circuit board 2.

Optionally, the parts of the first pin terminal 34 and the second pin terminal 35 located in the closed cavity 331 are disposed opposite to each other along the horizontal direction, when the first soft magnetic member 31 and the second soft magnetic member 32 are demagnetized, the first soft magnetic member 31 and the second soft magnetic member 32 will fall under the influence of gravity, and the first pin terminal 34 is connected to the first soft magnetic member 31, the second pin terminal 35 is connected to the second soft magnetic member 32, so that the fallen first soft magnetic member 31 and second soft magnetic member 32 are directly separated, and the circuit is disconnected.

Further, the magnetic switch assembly 3 further includes an encapsulation shell 36, the glass shell 33 is disposed in the encapsulation shell 36, and the encapsulation shell 36 is disposed on the circuit board 2, so that the encapsulation shell 36 can protect the glass shell 33, so as to prevent the glass shell 33 from being broken due to factors such as impact on the contactless switch device. Alternatively, the package case 36 and the glass case 33 are both flat structures, so that the overall thickness of the magnetic switch assembly 3 is thin, which can satisfy the demand for miniaturized design of the contactless switch device. Further alternatively, the enclosure 36 is a plastic enclosure, so that the enclosure 36 is light in weight and facilitates the manufacturing of the magnetic switch assembly 3.

Further, the magnetic switch assembly 3 is disposed between the circuit board 2 and the housing 1, so that after the magnetic field of the external magnet 4 passes through the housing 1, the first soft magnetic member 31 and the second soft magnetic member 32 can be directly magnetized, and signal interference of the magnetic field to the circuit board 2 is avoided. Optionally, the magnetic switch assembly 3 is disposed adjacent to the housing 1, so as to improve the sensitivity of the magnetic switch assembly 3 in switching on and off, and avoid the situation that the external magnet 4 cannot magnetize the first soft magnetic member 31 and the second soft magnetic member 32 due to insufficient distance.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A contactless switching device, comprising:

a housing (1) and a circuit board (2) arranged in the housing (1);

The magnetic switch assembly (3), the said magnetic switch assembly (3) locates on the said circuit board (2); the magnetic switch assembly (3) comprises a first soft magnetic part (31) and a second soft magnetic part (32), and the first soft magnetic part (31) and the second soft magnetic part (32) are connected to the circuit board (2); -the first soft magnetic member (31) and the second soft magnetic member (32) are different in magnetic properties;

And the external magnet (4) is used for magnetizing the first soft magnetic piece (31) and the second soft magnetic piece (32) so as to enable the first soft magnetic piece (31) and the second soft magnetic piece (32) to be mutually adsorbed.

2. The contactless switching device according to claim 1, characterized in that the magnetic switching assembly (3) further comprises a glass envelope (33), a first pin terminal (34) and a second pin terminal (35); the glass shell (33) is provided with a closed cavity (331), and the first soft magnetic piece (31) and the second soft magnetic piece (32) are arranged in the closed cavity (331); one end of the first pin terminal (34) is connected to the circuit board (2), and the other end of the first pin terminal (34) penetrates through the glass shell (33) to be connected to the first soft magnetic piece (31); one end of the second pin terminal (35) is connected to the circuit board (2), and the other end of the second pin terminal (35) penetrates through the glass shell (33) to be connected to the second soft magnetic piece (32).

3. The contactless switching device according to claim 2, wherein the first pin terminal (34) and the portion of the second pin terminal (35) located in the closed cavity (331) are disposed opposite to each other in a horizontal direction.

4. The contactless switching device according to claim 2, characterized in that the magnetic switching assembly (3) further comprises an encapsulation (36), the glass housing (33) is provided within the encapsulation (36), and the encapsulation (36) is provided to the circuit board (2).

5. The contactless switching device according to claim 4, characterized in that the encapsulation (36) and the glass envelope (33) are each of flat configuration.

6. The contactless switching device according to claim 4, characterized in that the encapsulation (36) is a plastic shell.

7. The contactless switching device according to claim 1, characterized in that the magnetic switching assembly (3) is arranged between the circuit board (2) and the housing (1).

8. The contactless switching device according to claim 7, characterized in that the magnetic switching assembly (3) is arranged adjacent to the housing (1).

9. The contactless switching device according to any one of claims 1-8, characterized in that the contactless switching device further comprises a connection piece (5), by means of which connection piece (5) the circuit board (2) is detachably connected to the housing (1).

10. The contactless switching device according to any one of claims 1 to 8, characterized in that the external magnet (4) is provided with a handle (41).