KR20060036710A - A rotary switch formed with center hole - Google Patents

Abstract

The present invention relates to a hollow rotary switch,

A case (100) having a flat plate-shaped side wall portion (110) and a cylindrical support portion (120) which protrudes from the side wall portion (110) and has a through hole (130) formed in a central portion thereof; A rotating member 300 having a concave-convex portion 330 formed on an outer circumferential surface of the hollow member inserted into the support part 120; A circuit board 500 installed at either side between the case 100 and the rotating member 300 and including a resistance element; A contact piece (200) installed on either side between the case (100) and the rotating member (300); A cover 900 having a through hole 930 in which the support part 120 is inserted in a central part thereof, and installed in the case 100 and accommodating the rotating member 300 therein together with the case 100; ; It includes a click member 700 installed in the cover 900 and in contact with the uneven portion 330 of the rotating member 300, the circuit board 500 has a predetermined resistance along the circumference of the support portion 120 Since a plurality of resistance elements 510 having a value are arranged, if the configuration of the main circuit is simple and only the number of resistance elements is the same, the circuit with the resistance elements attached in the state where the configuration of the main circuits is the same Since only the board needs to be replaced, there are advantages that can be variously applied depending on the situation.

Description

Hollow Rotary Switch {A ROTARY SWITCH FORMED WITH CENTER HOLE}

1 is an exploded perspective view showing the structure of a conventional hollow rotary switch.

2 is a longitudinal sectional view showing the structure of a conventional hollow rotary switch.

3 is a front sectional view showing the structure of a conventional hollow rotary switch.

Figure 4 is a graph showing the resistance characteristics according to the rotation of the knob in the conventional hollow rotary switch.

Figure 5a is a top perspective view showing the structure of a hollow rotary switch according to the present invention.

5B is a bottom perspective view showing the structure of a hollow rotary switch according to the present invention.

6A is an exploded top perspective view showing the structure of a hollow rotary switch according to the present invention.

6B is a bottom exploded perspective view showing the structure of a hollow rotary switch according to the present invention.

7A is a sectional perspective view showing the structure of a hollow rotary switch according to the present invention.

7B is a partial cross-sectional perspective view showing the structure of a hollow rotary switch according to the present invention.

8 is a front view showing the structure of a hollow rotary switch according to the present invention.

FIG. 9 is a front view illustrating a coupling structure of the cover and the click member in FIG. 6A.

10 is a graph showing the resistance characteristics according to the rotation of the knob in the hollow rotary switch according to the present invention.

※ Explanation of Major Drawings

100 ... case

110 ... side wall

120. Support

130 ... through hole in case

170 ... fitting hole

200 ... Contact piece

300 ... rotating member

310 ... hollow cylinder

320 ... Base

330 ... irregularities

500 ... Circuit Board

510 ... resistor

520 ... Connector

600 ... elastic member

700 ... Click member

710 ... Guide protrusion

800 ... lamp compartment

810 ... lamp rotator

820 ... Lamp Rotation Guide

830 ... lamp terminals

840 ... Lamp terminal contact piece

900 ... cover

910 ... obstacles

920 ... Accommodation Guide

1000 ... hollow rotary switch

The present invention relates to a hollow rotary switch, and more particularly, to a hollow rotary switch having a simple structure and a detachable operation.

A typical example of a conventional hollow rotary switch used in an air conditioner of an automobile is disclosed in Korean Patent Nos. 0399543 and 373975, and a schematic configuration thereof is shown in FIGS.

As shown in the drawing, a conventional hollow rotary switch has a case 1 having a flat wall portion 1a and a cylindrical support portion 1d upright from the wall portion 1a and having a through hole 1c formed in the center thereof. )Wow; A cylindrical shaft member (2) fitted to the outer circumferential surface of the support portion (1d) and thereby rotatably installed on the support portion (1d); A through-hole 5a inserted into the support part 1d and integrally installed in the shaft member 2 so that the shaft member 2 is rotatable by rotation; ; It has a through-hole 9c in which the said support part 1d and the shaft member 2 are inserted in the center part, and it is installed in the case 1, and accommodates the said rotating member 3 inside with the case 1 inside. A box body 9 to be used; And a contact piece 8 provided on one of the case 1 and the rotating member 3, and a conductive pattern 6 provided on any one of the case 1 and the rotating member 3, respectively. .

The case 1 and the box body 9 are joined by bending a mounting plate 12 made of metal.

At this time, the shaft member 2 and the rotating member 3 is formed of a separate component, the shaft member 2 is formed with a first snap leg portion 2b, the first snap leg The rotating member 3 is coupled to the shaft member 2 by the portion 2b.

The rotating member 3 includes a rotating body 4 having an uneven portion forming a click mechanism, and an insulating substrate mounted on the rotating body 4 and provided with the conductive pattern 6 or the contact piece 8. It consists of 5).

Then, the click member 10 corresponding to the elasticity is provided in the box 9 while being guided along the side wall 9g as the rotor 4 rotates. Here, the click member 10 is composed of a main body portion 10a and a convex portion 10b formed upright from the main body portion 10a.

In addition, the front portion 10c of the click member 10 is pressed while elasticity is applied to the uneven portion 4d of the rotating body 4 by the biasing member 11, in accordance with the rotation of the rotating body (4) While the click member 10 is caught or detached from the uneven portion 4d, the click member 10 performs an operation of passing theft.

In addition, as the shaft member 2 and the rotating member 3 rotate together, a predetermined operation of the air conditioner door or the like is performed according to the resistance change between the conductive pattern 6 and the contact piece 8.

However, in such a conventional hollow rotary switch, the conductive pattern 6 is formed in a structure in which a substance having a constant resistance value is applied to the place where the contact piece 8 passes, and thus the rotation member 3 is rotated. The resistance value was maintained in a linear relationship. Strictly, according to the modest rotation of the rotating body 4 in which the unevenness | corrugation was formed, as shown in FIG. According to the resistance characteristics of the conventional switch, in order to configure a switch having a variety of resistance characteristics, the configuration of the main circuit connected to the rotary switch each time had to be different, which in turn leads to an increase in manufacturing cost.

In the conventional hollow rotary switch, since the click member 10 and the biasing member 11 are separated separately, and the biasing member 11 is constituted by a leaf spring, a relatively large space in which an elongated leaf spring moves is provided. It became necessary, and there existed a possibility that the leaf spring may slip off from the box body 9 during operation.

In addition, since the rotating body 4 and the shaft member 2 are separated and connected together by the first snap leg portion 2b, there is a disadvantage in that the strength of the coupling portion is weak.

In addition, even when combined with the lamp mounting portion (not shown), the lamp rotation guide portion (not shown) for supporting the lamp rotating portion (not shown) is only fixedly coupled to the case 1 and / or the box body (9). Since the shaft member 2 and the lamp rotation part (not shown) are not directly engaged, the coupling structure of the knob (not shown) is complicated to rotate together with the shaft member 2 and the lamp rotation part (not shown). .

The present invention has been made to solve the above problems, an object of the present invention is to provide a hollow rotary switch that can significantly reduce the production cost by simply configuring an external circuit can be given a variety of output value itself. have.

Another object of the present invention is to provide a hollow rotary switch having high durability.

Still another object of the present invention is to provide a hollow rotary switch having a simple assembly structure.

In order to achieve the above object, the hollow rotary switch according to the present invention,

A case having a plate-shaped side wall portion and a cylindrical support portion protruding from the side wall portion and having a through hole formed in the center portion thereof; A hollow member inserted into the support unit, the rotating member having an uneven portion formed on an outer circumferential surface thereof; A circuit board installed at one side between the case and the rotating member and including a resistance element; A contact piece provided on either side between the case and the rotating member; A cover having a through hole in which the support part is inserted in a central part thereof, the cover being installed in the case and accommodating the rotating member together with the case; A hollow rotary switch is installed on the cover and comprises a click member in contact with an uneven portion of the rotating member.

The circuit board is characterized in that a plurality of resistance elements having a predetermined resistance value is disposed along the circumference of the support portion.

Here, the click member is preferably a leaf spring consisting of a guide protrusion in contact with the concave-convex portion of the rotating member, and both side extension plates supported by the cover.

In addition, coupled to the outer circumferential surface of the rotating member and the lamp rotating unit capable of rotating together; A lamp rotation guide part disposed between the lamp rotation part and the cover and fixed to the case; A lamp terminal provided in one of the lamp rotating part and the lamp rotating guide part; A lamp terminal contact piece installed on the other of the lamp rotating part and the lamp rotating guide part; It may be further provided with.

At this time, the lamp rotation guide portion is formed with a locking projection in the installation direction, it is preferable that the locking projection can be detachably installed through the fitting hole formed in the case.

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

5 to 9 illustrate the structure of the hollow rotary switch according to the present embodiment.

As shown, the hollow rotary switch 1000 according to the present embodiment, the case 100, the rotating member 300, the circuit board 500, the contact piece 200, the cover 900, the click member ( 700, and a lamp mounting portion 800.

First, the case 100 is composed of a plate-shaped side wall portion 110 and a cylindrical support portion 120 which protrudes from the side wall portion 110 and has a through hole 130 formed in the center thereof. In addition, a plurality of fitting holes 170 are formed on the outer circumferential surface of the case 100 to couple the cover 900 and the lamp rotation guide 820 which will be described later.

In addition, the rotating member 300 is inserted into the support part 120 of the case 100. Specifically, the rotating member 300 is composed of a hollow cylindrical portion 310 and the supporting portion 320 extending outward from one end of the hollow cylindrical portion (310). The hollow cylindrical part 310 is inserted into the support part 120 of the case 100. In addition, an uneven portion 330 is formed on the outer circumferential surface of the rotating member 300 to allow a modest movement while in contact with the click member 700 to be described later.

The circuit board 500 and the contact piece 200 are disposed between the case 100 and the rotating member 300. In addition, a resistance element 510 is disposed on the circuit board 500. The circuit board 500 and the contact piece 200 may be disposed on either the side wall portion 110 or the rotation member 300 of the case 100, respectively, so that relative rotational movement is possible.

A plurality of resistance elements 510 disposed on the circuit board 500 are provided along a circumference of the support part 120 to have various predetermined resistance values. Of course, the resistance element 510 is provided with a connection terminal 520 connected to the main circuit board (not shown).

In addition, the contact piece 200 is relatively moved while in contact with the resistance element 510 disposed on the circuit board 500.

Thus, as shown in Fig. 10, resistance output values of different magnitudes can be obtained arbitrarily. That is, rotary switches having various resistance characteristics may be manufactured according to the arrangement of the resistance element 510.

The cover 900 has a through hole 930 in which a support part 120 of the case 100 is inserted in a central portion thereof, and is coupled to the case 100 to accommodate the rotating member 300 together. . In detail, a plurality of locking protrusions 910 are formed on the outer circumferential surface of the cover 900, and the locking protrusions 910 are tightly coupled to the fitting holes 170 formed on the outer circumferential surface of the case 100. In addition, the cover 900 is formed with a receiving guide groove 920 to accommodate the click member 700 to be described later.

The click member 700 is accommodated in the accommodation guide groove 920 of the cover 900. Specifically, the click member 700 is composed of a leaf spring, provided with a guide protrusion 710 protruding in the moving direction, the extension plate extending from both sides of the guide protrusion 710 of the cover 900 The receiving guide groove 920 is fitted.

As a result, the concave-convex portion 330 formed on the outer circumferential surface of the rotating member 300 is in contact with the guide protrusion 710 of the click member 700 in accordance with the rotational movement of the rotating member 300, thereby moving theft. This becomes possible.

On the other hand, the lamp mounting portion 800 indicating the operating position of the knob is coupled to the case 100.

The lamp mounting part 800 includes a lamp rotating part 810, a lamp rotating guide part 820, a lamp terminal 830, and a lamp terminal contact piece 840.

Specifically, the lamp rotator 810 is a lamp 818 is installed, it is coupled to the outer circumferential surface of the rotating member 300 is rotatable together. The lamp rotation part 810 is provided with a snap leg portion 817 and a locking groove 819, each of the locking hole 317 and the locking projection formed on the outer circumference of the hollow cylindrical portion 310 of the rotating member 300 319 is to be combined with each other.

The lamp rotation guide part 820 is disposed between the lamp rotation part 810 and the cover 900, and the locking protrusion 821 of the lamp rotation guide part 820 is a fitting hole of the case 100. 170) is fixed and installed.

In addition, the lamp terminal 830 is installed in the lamp rotation guide 820. However, the lamp terminal 830 may be provided in the lamp rotation part 810.

In addition, a lamp terminal contact piece 840 is provided in the lamp rotation part 810. However, the lamp terminal contact piece 840 may be provided in the lamp rotation guide 820.

In this case, of course, one end of the lamp terminal 830 or the lamp terminal contact piece 840 is connected to the power connection of the main circuit.

According to the present invention having the above-described configuration, since a plurality of resistance elements having a predetermined resistance value are disposed on the circuit board along the circumference of the support portion, the configuration of the main circuit can be simplified, and the number of resistance elements If it is the same, it is possible to replace only the circuit board with a resistor attached, there is an advantage that it is easy to assemble and manufacture.

In addition, since the click member has a guide protrusion protruding in the moving direction and is supported by the cover so as to be elastic in the moving direction, the receiving space in the cover is small, making the overall structure compact and less likely to be detached. There is also an advantage.

In addition, since the lamp rotating part is directly coupled to the rotating member to move together, there is an advantage that the installation structure of the knob is simple and easy installation work.

In addition, since the rotary switch can be configured without the shaft member, there is an advantage that the overall configuration is simplified.

Claims (4)

A case (100) having a flat plate-shaped side wall portion (110) and a cylindrical support portion (120) which protrudes from the side wall portion (110) and has a through hole (130) formed in a central portion thereof; A rotating member 300 having a concave-convex portion 330 formed on an outer circumferential surface of the hollow member inserted into the support part 120; A circuit board 500 installed at either side between the case 100 and the rotating member 300 and including a resistance element; A contact piece (200) installed on either side between the case (100) and the rotating member (300); A cover 900 having a through hole 930 in which the support part 120 is inserted in a central part thereof, and installed in the case 100 and accommodating the rotating member 300 therein together with the case 100; ; In the hollow rotary switch is installed on the cover 900 and comprises a click member 700 in contact with the uneven portion 330 of the rotating member 300, The circuit board 500 is a hollow rotary switch, characterized in that a plurality of resistance elements (510) having a predetermined resistance value is disposed along the circumference of the support portion (120). The method of claim 1, The click member 700 is a hollow, characterized in that the guide spring 710 is in contact with the concave-convex portion 330 of the rotating member 300, and a leaf spring consisting of both side plates supported by the cover 900 Type rotary switch. The method according to claim 1 or 2, A lamp rotating unit 810 coupled to an outer circumferential surface of the rotating member 300 and capable of rotating together; A lamp rotation guide part 820 disposed between the lamp rotation part 810 and the cover 900 and fixedly installed to the case 100; A lamp terminal 830 installed in one of the lamp rotating part 810 and the lamp rotating guide part 820; A lamp terminal contact piece 840 installed at the other of the lamp rotating part 810 and the lamp rotating guide part 820; Hollow rotary switch characterized in that it further comprises. The method of claim 3, The ramp rotation guide part 820 is provided with a locking protrusion 821 in the installation direction, so that the locking protrusion 821 can be freely attached or detached through the fitting hole 170 of the case 100. Hollow rotary switch characterized in that.

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