KR20180102913A - Rotary switch using the permanent magnet for Full Automatic Temperature Control device - Google Patents

Abstract

A rotary switch for a thermostat using permanent magnets is disclosed. A rotary switch according to the present invention includes: a knob having a receiving space formed therein; a hollow knob guide extending from a bottom center of the knob to an arbitrary length in a direction perpendicular to the radial direction of the knob; A magnet coupled to the lower end of the knob and having N poles and S poles alternately arranged in a direction in which the knob rotates; a main PCB mounted on the main PCB spaced apart from the knob guide by a predetermined distance; And a sensing member for detecting a rotation direction and an amount of rotation of the magnetic body, which is rotated by the knob and the knob guide. The sensing member may be a conventional encoder or potentiometer The problem of the simplification of the configuration and the lack of space can be greatly improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rotary switch for a thermostat using a permanent magnet,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary switch for a thermostat, and more particularly, to a rotary switch for a thermostatic device of a non-contact magnetic detection type that detects a rotational motion of a permanent magnet by a sensor and detects a rotation amount and a rotational direction of the knob .

In general, a full automatic temperature control (hereinafter referred to as "FATC") automatically adjusts the air flow direction, wind speed, room temperature, and outside air inflow, .

FATC can be used to control various module motors (modal door motors, air mix doors, etc.) through logical operation in microcomputer inside FATC control based on input signals from various sensors (indoor temperature, outdoor temperature, water temperature, Motor, interior and exterior door motors) to keep the room temperature at the set temperature of the driver.

The FATC is equipped with a mechanical knob to allow the user to set the temperature and wind speed as desired. Encoder or potentiometer type products are mainly used as control knobs applied to the conventional FATC.

Encoder or potentiometer system requires that an encoder or potentiometer be mounted on the PCB in the product and a knob main body with an additional instrument for user's operation is enclosed by the encoder or potentiometer. Should be installed.

Therefore, in the case of potentiometer type, wiring structure for electrically connecting components such as LCD located at the center of the knob and the PCB at the lower end of the knob to the interface of the knob is required. There is a problem that requires a large internal space.

That is, the control knob of the conventional encoder or potentiometer type is disadvantageous in that the product can not be compactly constructed. Further, since the complicated electric wiring and a large number of parts are disposed inside the knob, an illumination structure for securing visibility at night is applied There is also a structural problem that is difficult.

Korean Patent Publication No. 10-2011-0054656 (published on May 25, 2011)

SUMMARY OF THE INVENTION The object of the present invention is to provide a magnetic detection system that detects the rotational motion of a permanent magnet by a sensor and detects a rotation amount and a rotational direction of the knob, A rotary switch for a thermostat of a thermostat using a permanent magnet which can greatly improve the problem of the temperature sensor.

According to an aspect of the present invention,

A knob having a receiving space formed therein;

A knob guide having a hollow structure extending from the bottom center of the knob to an arbitrary length in a direction perpendicular to the radial direction of the knob;

 A magnet coupled to the lower end of the knob guide and having N poles and S poles alternately arranged in a direction in which the knob rotates;

A sensor for detecting a rotational direction and an amount of rotation of the magnetic body that rotates by the knob and the knob guide, the sensor being mounted on a main circuit board (Main PCB) A rotary switch for a thermostatic device using a permanent magnet including a sensing member.

The knob may include a knob rim knob rim, a knob body coupled to the knob rim, the knob body connected to the knob guide at a center of the lower surface and having an accommodation space, A knob cover coupled to an upper opening side of the knob body and formed with a light transmission path in a specific character, symbol or graphic shape so that light can be transmitted from the inside to the outside.

Further, the knob may be mounted on a sub circuit board (Sub PCB) installed in the accommodation space, and may be a lighting source for emitting light so that light can be transmitted from the inside to the outside through the light transmission path .

The knob cover may include a touch area configured to recognize a user's touch and transmit the recognized information to a main circuit board (Main PCB) through a sub circuit board in a receiving space have.

According to another aspect of the present invention as a solution to the problem,

A knob having a receiving space formed therein;

A knob guide having a hollow structure extending from the bottom center of the knob to an arbitrary length in a direction perpendicular to the radial direction of the knob;

And a skirt portion having an N pole and an S pole alternately formed in a direction in which the knob rotates and formed around the lower end of the coupling portion at a larger diameter than the coupling portion, Magnetic):

A sensor for detecting a rotational direction and an amount of rotation of the magnetic body that rotates by the knob and the knob guide, the sensor being mounted on a main circuit board (Main PCB) A sensing member,

And a plurality of sensing members for detecting the magnetic pole of the skirt portion are arranged in an arc around the skirt portion in a circular arc shape.

The knob may include a knob rim knob rim, a knob body coupled to the knob rim, the knob body connected to the knob guide at the center of the lower surface and having an accommodation space, A knob cover coupled to an upper opening side of the knob body and formed with a light transmission path in a specific character, symbol or graphic shape so that light can be transmitted from the inside to the outside.

Further, the knob may be mounted on a sub circuit board (Sub PCB) installed in the accommodation space, and may be a lighting source for emitting light so that light can be transmitted from the inside to the outside through the light transmission path .

The knob cover may include a touch area configured to recognize a user's touch and transmit the recognized information to a main circuit board (Main PCB) through a sub circuit board in a receiving space have.

According to the rotary switch for a thermostatic apparatus using a permanent magnet according to an embodiment of the present invention, a sensor detects the rotational motion of a permanent magnet and detects the amount of rotation and the direction of rotation of the knob, And the configuration can be simplified, and it is advantageous in mass production of the product, economical efficiency, and weight reduction of the switch.

In addition, since complicated wiring for electrical connection between parts is not required, it is possible to largely improve the problem of insufficient internal space due to the conventional encoder or potentiometer method, It is structurally advantageous also in the application of the illumination structure for securing the visibility at night because more space can be secured.

1 is a conceptual view of a rotary switch for a thermostat using permanent magnets according to a first embodiment of the present invention;
2 is a view showing a preferred embodiment of the rotary switch for a thermostat using the permanent magnet shown in Fig.
3 is a conceptual diagram of a rotary switch for a thermostat using permanent magnets according to a second embodiment of the present invention;
Fig. 4 is a view showing a preferred embodiment of the rotary switch for the thermostat using the permanent magnet shown in Fig. 3; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It is to be understood that the terms "comprises", "having", and the like in the specification are intended to specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

In addition, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software .

In the following description with reference to the accompanying drawings, the same reference numerals are given to the same constituent elements, and a duplicate description thereof will be omitted. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a conceptual diagram of a rotary switch for a thermostat using a permanent magnet according to a first embodiment of the present invention, FIG. 2 is a schematic view of a rotary switch for a thermostat using permanent magnets shown in FIG. 1 Fig.

Referring to FIGS. 1 and 2, the rotary switch for a thermostat using permanent magnets according to the present embodiment has a structure capable of miniaturizing a product and simplifying its configuration by a non-contact magnetic detection system. Preferably, the rotation of the permanent magnet 30 mounted on the knob 10 side is sensed by a sensor on the circuit board side to detect the amount of rotation and the direction of rotation of the knob 10.

The configuration of the present invention will be described in more detail.

The rotary switch for a thermostatic apparatus using a permanent magnet according to the first embodiment includes a knob 10 in which a receiving space 140 is formed. And a knob guide 20 having a hollow structure extending from the bottom center of the knob 10 in a direction perpendicular to the radial direction of the knob 10.

The knob 10 has a ring-shaped knob rim 12 and a knob guide 12 connected to the knob rim 12 at the center of the lower surface of the knob rim 12, And a knob cover 16 coupled to the upper opening side of the knob body 14 to cover the accommodation space 140. [

At the lower end of the knob guide 20, a magnetic body 30 having N poles and S poles alternately formed in the rotational direction of the knob 10 is coupled. A sensing member 40 is mounted on the main PCB 50 spaced at a predetermined distance below the knob guide 20 so as to correspond to the magnetic body 30.

The rotational operating force of the user for temperature or wind speed control is inputted through the knob 10 and transmitted to the knob guide 20. The magnetic body 30 is rotated in the direction in which the user's rotational operation force is inputted together with the rotation of the knob guide 20 and the sensing member 40 senses the rotational motion of the magnetic body 30, And is transferred to the circuit board 50.

The rotational operation force information of the knob 10 transmitted to the main circuit board 50 is input to a microcomputer (not shown) and outputted as an actuator control signal for controlling the automatic thermostatting of the room through logical operation of the microcomputer. Of course, an input signal from various sensors of a vehicle is also used as a main operation factor for the control signal output for automatic temperature control.

The sensing member 40 may preferably be a Hall sensor. In this case, from the output information of the hall sensor which recognizes the change in the polarity of the magnetic body 30 rotating by the knob 10 and the knob guide 20, the rotation direction and the rotation amount of the knob 10 Can be accurately detected.

Although two-pole magnets in which N pole and S pole are alternately formed at a pitch of 180 degrees with respect to the rotating direction of the magnetic body 30 are shown as examples in the figure, the number of poles (the number of N poles and the number of S poles) It is possible to obtain more accurate information about the amount of rotation (rotational displacement) of the knob 10, and the more the number of Hall sensors is, the more advantageous it is.

Meanwhile, the knob cover 16 may be formed with a specific letter, symbol, or graphic shape so that light can pass through the knob 10 from the inside to the outside. The illumination space 70 may be provided in the accommodation space 140 of the knob 10 to transmit light through the light transmission path 160 to ensure night visibility.

Here, the light transmitting path 160 may be formed by laser processing a part of the knob cover 16 into a desired symbol or a shape, or may be formed by knocking a knob cover 16 made of a light- And the light source 70 may be mounted on a sub PCB 60 electrically connected to the main circuit board 50 and installed in the receiving space 140. [

The knob cover 16 also recognizes the touch of the user and transmits the recognized information to the main circuit board (Main) through the sub PCB 60 in the accommodation space 140, And a touch region formed of touch sensors for transmitting the signals to the PCB 50. [

According to the first embodiment of the present invention, the sensor detects the rotational motion of the permanent magnet and the non-contact magnetic detection system detects the rotation amount and the rotational direction of the knob, thereby making it possible to miniaturize the product and simplify the configuration thereof , There is an advantageous effect in mass production of the product, economical efficiency, and weight reduction of the switch.

In addition, since complicated wiring for electrical connection between parts is not required, it is possible to solve the problem of insufficient internal space due to the conventional encoder or potentiometer method, and it is possible to improve the space So that it is advantageous to apply the illumination structure for securing visibility at night.

FIG. 3 is a conceptual diagram of a rotary switch for a thermostat using a permanent magnet according to a second embodiment of the present invention, FIG. 4 is a schematic view of a rotary switch for a thermostat using permanent magnets shown in FIG. Fig. In the description of this embodiment, the same reference numerals are given to the same components as those of the above-described first embodiment.

 Referring to FIGS. 3 and 4, the rotary switch for a thermostatic apparatus using a permanent magnet according to the second embodiment includes a knob 10 in which a receiving space 140 is formed. And a knob guide 20 having a hollow structure extending from the bottom center of the knob 10 in a direction perpendicular to the radial direction of the knob 10.

The knob 10 has a ring-shaped knob rim 12 and a knob guide 12 connected to the knob rim 12 at the center of the lower surface of the knob rim 12, And a knob cover 16 coupled to the upper opening side of the knob body 14 to cover the accommodation space 140. [

At the lower end of the knob guide 20, a magnetic body 30 having N poles and S poles alternately formed in the rotational direction of the knob 10 is coupled. A plurality of sensing members 42 are mounted on the main PCB 50 spaced apart from the knob guide 20 to correspond to the magnetic bodies 30.

The rotational operating force of the user for temperature or wind speed control is inputted through the knob 10 and transmitted to the knob guide 20. The magnetic body 30 is rotated in the direction in which the user's rotational operation force is inputted together with the rotation of the knob guide 20 and the sensing member 42 senses the rotational motion of the magnetic body 30, And is transferred to the circuit board 50.

The rotational operation force information of the knob 10 transmitted to the main circuit board 50 is input to a microcomputer (not shown) and outputted as an actuator control signal for controlling the automatic thermostatting of the room through logical operation of the microcomputer. Of course, an input signal from various sensors of a vehicle is also used as a main operation factor for the control signal output for automatic temperature control.

The magnetic body 30 includes a coupling portion 32 to be fitted to the lower end of the knob guide 20 and a coupling portion 32 having a larger diameter than the coupling portion 32 around the lower end of the coupling portion 32 And a skirt portion 34 having N poles and S poles alternately formed in a direction in which the knob 10 rotates.

In the figure, six-pole magnets in which N poles and S poles are alternately formed at pitches of 60 degrees with respect to the rotating direction of the magnetic body 30 are shown as an example, but the present invention is not limited thereto. The number of S poles) is increased, more accurate information on the amount of rotation (rotational displacement) of the knob 10 can be obtained.

The plurality of sensing members 42 may preferably be Hall sensors. In this case, from the output information of the hall sensor which recognizes the change in the polarity of the magnetic body 30 rotating by the knob 10 and the knob guide 20, the rotation direction and the rotation amount of the knob 10 Can be accurately detected.

Preferably, a plurality of sensing members 42 may be arranged around the skirt portion 34 of the magnetic body 30 in a specific arrangement. 3, a plurality of sensing members 42 may be mounted on the main circuit board 50 so as to form an arcuate array at an arbitrary interval around the skirt portion 34 .

On the other hand, also in the second embodiment, the light transmission path 160 may be formed in a specific character, symbol, or graphic shape in the knob cover 16. [ The illumination space 70 may be provided in the accommodation space 140 of the knob 10 to transmit light through the light transmission path 160 to ensure night visibility.

Likewise, although not specifically illustrated in the drawings, the knob cover 16 also recognizes the touch of the user, and recognizes the recognized information through the sub-circuit board 60 in the accommodation space 140, And a touch area configured to transmit the touch signals to the main PCB 50.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

10: Knob 12: Knob Rim
14: Knob body 16: Knob cover
20: knob guide 30: magnetic body
32: engaging portion 34: skirt portion
40, 42: sensing member 50: main circuit board
60: sub circuit board 70: light source
140: accommodation space

Claims (8)

A knob 10 having a receiving space 140 formed therein;
A knob guide 20 having a hollow structure extending from the bottom center of the knob 10 in a direction perpendicular to the radial direction of the knob 10;
A magnetic body 30 coupled to a lower end of the knob guide 20 and having N poles and S poles alternately arranged in a direction in which the knob 10 rotates;
The main body 50 is mounted on the main circuit board 50 at a predetermined distance below the knob guide 20 so as to correspond to the magnetic body 30. The rotational direction of the magnetic body 30, And a sensing member (40) for detecting the temperature of the rotating member.
The method according to claim 1,
The knob (10)
A ring-shaped knob rim 12;
A knob body 14 to which the knob rim 12 is coupled and to which the knob guide 20 is connected at its center, And
A knob body 14 coupled to the upper opening side of the knob body 14 so as to cover the accommodation space 140 and having a light transmission path 160 formed in a specific character, And a knob cover (16) for rotating the rotary switch.
3. The method of claim 2,
The knob (10)
A light source (not shown) that is mounted on a sub circuit board (60) installed in the accommodation space (140) and emits light so that light can be transmitted from the inside to the outside through the light transmission path The rotary switch for a thermostat according to claim 1, further comprising:
3. The method of claim 2,
The knob cover 16 is provided with touch sensors for recognizing the user's touch and transmitting the recognized information to the main circuit board 50 via the sub PCB 60 in the accommodation space 140. [ The rotary switch for a thermostat according to claim 1,
A knob 10 having a receiving space 140 formed therein;
A knob guide 20 having a hollow structure extending from the bottom center of the knob 10 in a direction perpendicular to the radial direction of the knob 10;
The knob guide 20 includes an engaging portion 32 that is engaged with the lower end of the knob guide 20 and a lower portion of the engaging portion 32. The engaging portion 32 has a diameter larger than that of the engaging portion 32, And a skirt portion (34) having an N pole and an S pole,
The main body 50 is mounted on the main circuit board 50 at a predetermined distance below the knob guide 20 so as to correspond to the magnetic body 30. The rotational direction of the magnetic body 30, And a sensing member (42)
Wherein a plurality of sensing members (42) for detecting the magnetic pole of the skirt portion (34) are arranged in an arc around the skirt portion (34).
6. The method of claim 5,
The knob (10)
A ring-shaped knob rim 12;
A knob body 14 to which the knob rim 12 is coupled and to which the knob guide 20 is connected at its center, And
A knob body 14 coupled to the upper opening side of the knob body 14 so as to cover the accommodation space 140 and having a light transmission path 160 formed in a specific character, And a knob cover (16) for rotating the rotary switch.
The method according to claim 6,
The knob (10)
A light source (not shown) that is mounted on a sub circuit board (60) installed in the accommodation space (140) and emits light so that light can be transmitted from the inside to the outside through the light transmission path The rotary switch for a thermostat according to claim 1, further comprising:
The method according to claim 6,
The knob cover 16 is provided with touch sensors for recognizing the user's touch and transmitting the recognized information to the main circuit board 50 via the sub PCB 60 in the accommodation space 140. [ The rotary switch for a thermostat according to claim 1,

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