CN213150619U

CN213150619U - Analog quantity key

Info

Publication number: CN213150619U
Application number: CN202022256437.5U
Authority: CN
Inventors: 陈祖木; 宁东阳
Original assignee: Ohm (chongqing) Electronics Technology Ltd
Current assignee: Ohm (chongqing) Electronics Technology Ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-05-07
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses an analog quantity button, belong to electronic component technical field, including the circuit board, the upper end of circuit board is provided with the protective housing, the upside of protective housing is provided with the visor, the installation cavity has been seted up in the protective housing, the lower inner wall fixedly connected with spacing groove of installation cavity, the mounting groove has been seted up to the lower inner wall of spacing groove, the lower inner wall fixedly connected with hall chip of mounting groove, the upper end fixedly connected with spring of spacing groove, the upper end of spring is provided with the clamp plate, the lower extreme fixedly connected with magnetic element of clamp plate, the upside of protective housing is provided with the circuit, the circuit runs through the lower extreme and the downwardly extending of circuit board, the visor is located the upside of circuit, the lower extreme of visor is excavated there is the spread groove, be provided with the beginning switch card piece in the spread groove, the lower extreme fixed connection in circuit of beginning switch card piece, it can.

Description

Analog quantity key

Technical Field

The utility model relates to an electronic component technical field, more specifically say, relate to analog quantity button.

Background

Analog quantity signal output in the existing market outputs an electric signal by rotating a potentiometer, and a potentiometer user determines the output voltage intensity according to the rotating angle. The potentiometer drives the electric brush to rotate through the rotating shaft, the contact position of the potentiometer and the circuit board changes to realize voltage signal change, and after the shell structure is assembled, the cleanliness between the internal electric brush and the circuit board is guaranteed through epoxy potting materials.

But the structure of the potentiometer causes great difficulty in production, assembly and encapsulation processes of the potentiometer, the durability of the contact friction between the electric brush and the circuit board is relatively low, the encapsulation design is adopted for ensuring the cleanliness of products between the electric brush and the circuit board, and the maintainability is basically lost after encapsulation.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide an analog quantity button, it can realize pressing down the degree of depth size through the button and arousing between magnetite and the magnetic energy chip apart from and then realize the linear output size of analog quantity signal.

2. Technical scheme

In order to solve the above problem, the utility model adopts the following technical scheme:

the analog quantity key comprises a circuit board, wherein a protective shell is arranged at the upper end of the circuit board, a protective cover is arranged on the upper side of the protective shell, an installation cavity is formed in the protective shell, a limiting groove is fixedly connected to the lower inner wall of the installation cavity, an installation groove is formed in the lower inner wall of the limiting groove, a Hall chip is fixedly connected to the lower inner wall of the installation groove, a spring is fixedly connected to the upper end of the limiting groove, a pressing plate is arranged at the upper end of the spring, a magnetic element is fixedly connected to the lower end of the pressing plate, a circuit is arranged on the upper side of the protective shell, the circuit penetrates through the lower end of the circuit board and extends downwards, the protective cover is positioned on the upper side of the circuit, a connecting groove is formed in the lower end of the protective cover, an energy starting switch small pot, the energy starting key movably penetrates through the upper end of the energy starting key and extends upwards, and the distance between the magnet and the magnetic energy chip can be caused by the pressing depth of the key, so that the linear output of an analog quantity signal can be realized.

As an optimized proposal of the utility model, the lower end edge of the beginning switch dome sheet is fixedly connected with a welding ring, and the lower end of the welding ring is fixedly connected with a circuit.

As a preferred scheme of the utility model, the lower extreme edge fixedly connected with stopper of clamp plate, the upper end of spring is located the stopper.

As an optimized scheme of the utility model, the lower extreme of clamp plate is the protrusion cubic, magnetic element is located the protrusion piece, the protrusion piece is pegged graft in the spring.

As an optimized scheme of the utility model, the lower extreme fixedly connected with bolt of circuit board, the bolt is used for the fixed connection protective housing.

As an optimized scheme of the utility model, the upper end edge fixedly connected with of circuit board inserts the tip, the tip runs through the lower extreme and the downwardly extending of circuit board.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) when a user presses the initial energy button, the initial energy button drives the initial energy switch snap dome to move downwards, the magnetic element is ensured to be electrified, the initial energy switch snap dome drives the pressing plate to move downwards, the pressing plate drives the magnetic element to move downwards, so that the distance between the magnetic element and the Hall chip is changed, the electrical output size of the Hall chip is determined according to the distance between the Hall chip and the magnetic element, the output voltage signal of the Hall chip is changed, the output of an analog signal is further realized, the arrangement of the mounting groove is used for positioning and mounting the Hall chip, the installation is convenient, the pressing plate is connected between the inner walls of the limiting grooves in a sliding manner, so that the pressing plate can slide up and down more stably, the initial energy button cannot deviate when being pressed, the stability is improved, the setting of the initial energy switch snap dome can be avoided, and the safety accident caused by the false triggering of the analog quantity button is avoided, the safety is improved.

(2) This scheme protrusion piece's setting, stopper and protrusion piece cooperate, can not arouse the spring deformation when making it slide from top to bottom, prolong this device life, the setting of a plurality of bolt tips for installation and fixed circuit board make things convenient for the staff installation, the assembly is dismantled simply, and easy to maintain.

Drawings

FIG. 1 is an overall perspective view of the present invention;

fig. 2 is a bottom perspective view of the present invention;

FIG. 3 is a sectional view of the present invention;

fig. 4 is a front sectional view of the present invention.

The reference numbers in the figures illustrate:

1. a circuit board; 2. a protective shell; 3. a protective cover; 4. a mounting cavity; 5. a spring; 6. a limiting groove; 7. A Hall chip; 8. mounting grooves; 9. pressing a plate; 10. a magnetic element; 11. a line; 12. connecting grooves; 13. Starting to press the key; 14. starting to switch the metal dome sheet; 15. welding a ring; 16. inserting a pin; 17. a bolt; 18. And a limiting block.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, the analog quantity key comprises a circuit board 1, a protective casing 2 is disposed at the upper end of the circuit board 1, a protective cover 3 is disposed at the upper side of the protective casing 2, a mounting cavity 4 is disposed in the protective casing 2, a limiting groove 6 is fixedly connected to the lower inner wall of the mounting cavity 4, a mounting groove 8 is disposed at the lower inner wall of the limiting groove 6, a hall chip 7 is fixedly connected to the lower inner wall of the mounting groove 8, a spring 5 is fixedly connected to the upper end of the limiting groove 6, a pressing plate 9 is disposed at the upper end of the spring 5, a magnetic element 10 is fixedly connected to the lower end of the pressing plate 9, a circuit 11 is disposed at the upper side of the protective casing 2, the circuit 11 penetrates through the lower end of the circuit board 1 and extends downwards, the protective cover 3 is located at the upper side of the circuit 11, a connecting groove 12 is, an energy starting button 13 is connected in the connecting groove 12 in a sliding mode, and the energy starting button 13 movably penetrates through the upper end of the energy starting button 13 and extends upwards.

In the embodiment, the distance between the hall chip 7 and the magnetic element 10 is used for determining the electrical output of the hall chip 7, firstly, when a user presses the start-able button 13, the start-able button 13 drives the start-able switch dome 14 to move downwards to ensure that the magnetic element 10 is electrified, the start-able switch dome 14 drives the pressing plate 9 to move downwards, the pressing plate 9 drives the magnetic element 10 to move downwards, so that the distance between the magnetic element 10 and the hall chip 7 is changed, the electrical output of the hall chip 7 is determined according to the distance between the hall chip 7 and the magnetic element 10, so that the output voltage signal of the hall chip 7 is changed, further, the output of an analog signal is realized, the installation groove 8 is arranged for positioning and installing the hall chip 7 to play a role in convenient installation, the pressing plate 9 is slidably connected between the inner walls of the limiting groove 6, so that the pressing plate 9 slides upwards and downwards more, therefore, the key 13 cannot be deviated when pressed, the stability is improved, the dome sheet 14 can be switched on and off, the switch can be prevented from being touched by mistake, safety accidents caused by false triggering of the analog quantity key can be avoided, and the safety is improved.

Specifically, referring to fig. 4, the lower edge of the start-to-close dome 14 is fixedly connected with a welding ring 15, and the lower end of the welding ring 15 is fixedly connected to the circuit 11.

In this embodiment, the welding ring 15 is provided for connecting the energy starting switch dome 14 and the circuit 11.

Specifically, referring to fig. 4, a limiting block 18 is fixedly connected to the lower edge of the pressing plate 9, and the upper end of the spring 5 is located in the limiting block 18.

In this embodiment, the spring 5 is sleeved in the limiting block 18, so that the spring 5 is not deformed when the pressing plate 9 slides up and down.

Specifically, referring to fig. 4, the lower end of the pressing plate 9 is in the shape of a protruding block, the magnetic element 10 is located in the protruding block, and the protruding block is inserted into the spring 5.

In this embodiment, the setting of protruding piece, stopper 18 and protruding piece cooperate, can not cause spring 5 to warp when making it slide from top to bottom, extension this device life.

Specifically, referring to fig. 2, a bolt 17 is fixedly connected to the lower end of the circuit board 1, and the bolt 17 is used for fixedly connecting the protective casing 2.

In this embodiment, the lower extreme of protective housing 2 has the mounting hole with bolt 17 assorted, and the staff of being convenient for installs and dismantles bolt 17, easy to maintain.

Specifically, referring to fig. 1, a pin 16 is fixedly connected to an upper edge of the circuit board 1, and the pin 16 penetrates through a lower end of the circuit board 1 and extends downward.

In this embodiment, the plurality of pins 16 are provided for mounting and fixing the circuit board 1, which facilitates the installation by the worker.

The working principle is as follows: firstly, when a user presses an initial energy key 13, the initial energy key 13 drives an initial energy switch snap dome 14 to move downwards to ensure that a magnetic element 10 is electrified, the initial energy switch snap dome 14 drives a pressing plate 9 to move downwards, the pressing plate 9 drives the magnetic element 10 to move downwards, so that the distance between the magnetic element 10 and a Hall chip 7 is changed, the electrical output size of the Hall chip 7 is determined according to the distance between the Hall chip 7 and the magnetic element 10, the output voltage signal of the Hall chip 7 is changed, the output of an analog signal is further realized, the arrangement of a mounting groove 8 is used for positioning and mounting the Hall chip 7 to play a role of facilitating mounting, the pressing plate 9 is connected between the inner walls of a limiting groove 6 in a sliding manner, so that the pressing plate 9 slides up and down more stably, the initial energy key 13 cannot deviate when pressed, the stability is improved, and the arrangement of the initial energy switch snap dome 14 is started, the switch can be prevented from being touched by mistake, safety accidents caused by false triggering of the analog quantity keys are avoided, and safety is improved.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. Analog quantity button, its characterized in that: the protective cover comprises a circuit board (1), a protective shell (2) is arranged at the upper end of the circuit board (1), a protective cover (3) is arranged at the upper side of the protective shell (2), an installation cavity (4) is formed in the protective shell (2), a limiting groove (6) is fixedly connected to the lower inner wall of the installation cavity (4), an installation groove (8) is formed in the lower inner wall of the limiting groove (6), a Hall chip (7) is fixedly connected to the lower inner wall of the installation groove (8), a spring (5) is fixedly connected to the upper end of the limiting groove (6), a pressing plate (9) is arranged at the upper end of the spring (5), a magnetic element (10) is fixedly connected to the lower end of the pressing plate (9), a circuit (11) is arranged at the upper side of the protective shell (2), the circuit (11) penetrates through the lower end of the circuit board (1) and, the lower extreme of visor (3) is opened and is dug spread connecting groove (12), be provided with in connecting groove (12) and begin to switch metal dome piece (14), the lower extreme fixed connection in circuit (11) that begins to switch metal dome piece (14), sliding connection has in connecting groove (12) and begins to enable button (13), begin to enable button (13) activity and run through the upper end that begins to enable button (13) and upwards extend.

2. The analog quantity key according to claim 1, wherein: the lower end edge of the energy starting switch snap dome (14) is fixedly connected with a welding ring (15), and the lower end of the welding ring (15) is fixedly connected with the circuit (11).

3. The analog quantity key according to claim 2, wherein: the lower extreme edge fixedly connected with stopper (18) of clamp plate (9), the upper end of spring (5) is located stopper (18).

4. The analog quantity key according to claim 3, wherein: the lower end of the pressing plate (9) is in a protruding block shape, the magnetic element (10) is located in the protruding block, and the protruding block is inserted into the spring (5).

5. The analog quantity key according to claim 4, wherein: the lower extreme fixedly connected with bolt (17) of circuit board (1), bolt (17) are used for fixed connection protective housing (2).

6. The analog quantity key according to claim 5, wherein: the edge fixedly connected with bolt (16) of the upper end of circuit board (1), bolt (16) run through the lower extreme and the downwardly extending of circuit board (1).