KR100516112B1 - a rotary switch, circuit board comprising switch patterns and a key-module - Google Patents

Abstract

The present invention relates to a key module used as an operation unit, a switch and a circuit board used in the key module. An object of the present invention is to provide a key module using a switch and a circuit board which are easy to assemble and have general versatility.

In the rotary switch according to the present invention, when the conductive terminal protrudes at the bottom, the conductive terminals rotate together with the operation of the rotary knob. It is preferable that the said conductive terminal is detachable and detachable. In the circuit board according to the present invention, a switch pattern is printed together on a board together with circuit wiring, and the conductive terminals on the circuit pattern slide and perform a switching operation. The rotary switch is detachably mounted to the circuit board without a soldering process.

By the above-described configuration of the present application, it is possible to manufacture a key module that is easy to assemble and has high versatility.

Description

Rotary switch, circuit board comprising switch patterns and a key-module}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to circuit boards and key modules for mounting various switches to control the operation of electronic equipment, and to rotary switches used therein. In more detail, the present invention relates to a circuit board and a key module including a wiring pattern as well as a switch pattern.

1A and 1B illustrate rotary switches used in the prior art. Such a rotary switch is called a jog switch, an encoder, or the like, and the output terminal is turned on or off or is set to a plurality of resistance components as the switch shaft or the outer periphery of the shaft rotates. These rotary switches are exposed to the outside like a rotary switch in a video jog or a microwave oven.

The conventional rotary switch consists of the operation part 10a and the mounting part 10b. The operation unit 10a rotates the conductor terminal 11a around the switch knob. The conductor terminals are arranged with the same or different radii. The operation unit 10a is mounted on the mounting unit 10b including the switch pattern, and the encoded signal path is output to the circuit board through the lid 11b. The leads are solder bonded through the via-holes of the circuit board.

1B is a plan view of the mounting portion 10b. The switch pattern 12b is formed in a shape in which a conductor pattern whose end is discontinuous with respect to the handle axis is divided in a radial direction. The conductor terminal 11a slides on the pattern 12b and is connected with the pattern. Since the conductor terminals are electrically connected to each other, signals encoded according to the combination of the radial patterns may be output to the leads 11b.

The above-mentioned prior art rotary switch is manufactured as one finished product and mounted on a circuit board using a bonding technique using soldering lamps. However, these rotary switches are not easy to change when deriving a new model because the encoding format is standardized to the finished state. In other words, the switch must be newly manufactured to meet the encoding value required by the new circuit board. Therefore, it becomes an obstacle to the standardization of parts according to the diversification of the product.

In addition, since the switch pattern of the switch of the prior art is formed in the insulating mounting portion, the space thereof is narrow, and the forming step is also not easy.

In addition, when the rotary switch of the prior art is attached to the circuit board by soldering or the like, there is a problem in that the process of assembling the switch so as to be able to operate the outside of the device because of the formation of protrusions, so that there is a complicated problem.

The present invention has been proposed to solve the above problems, and an object thereof is to provide various key modules with a single standard switch and a standard circuit board. In addition, an object of the present invention is to provide a key module that can easily switch pattern forming and assembly process without limitation in place.

In order to achieve the above technical problem, a circuit board according to an aspect of the present invention, a plurality of circuit wiring; A plurality of conductive switch patterns connected to the conductor terminals protruding from the switch and electrically connected to the circuit wiring; An insulating recess for mounting a switch around the switch pattern may be included. The switch patterns may be electrically connected to each other to output different switching values.

In addition, a rotary switch according to a feature of the present invention includes a curved dome contact having an elasticity, and an axis capable of pressing the dome contact in a vertical direction; A rotary knob capable of rotating about the shaft; A rotating plate including a plurality of recesses vertically opened; A conductor ring positioned between the rotary knob part and the rotary plate part and rotating together with the rotary plate part and the rotary knob; And a conductor terminal electrically connected to the conductor ring and detachably mounted to a lower end recess of the rotating plate.

In the key module according to the present invention, the above-described rotary switch is mounted on the above-mentioned circuit board.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention. Like parts are designated by like reference numerals throughout the specification. (When a part is connected to another part, this includes not only a directly connected part but also an electrically connected part with another element in between.) (Parts such as layers, films, regions, and plates) When we say that this other part is "on top", this includes not only the other part "just above" but also another part in between.)

Now according to an embodiment of the present invention will be described in detail with reference to the drawings.

2 is an exploded view of an operation unit of a rotary switch according to an embodiment of the present invention.

The operation part includes a shaft 110a, a dome contact 111a, a shaft mounting part 120a, a conductor ring 130a and a rotating plate 140a.

The shaft 110a of the operation unit is mounted in such a manner as to penetrate the shaft mounting unit 120a in which the opening is formed. The end of the shaft 110a is mounted so as to press the dome contact 111a which is formed with a protrusion and is inserted into the opening of the shaft mounting portion 120a. The dome contact 111a is formed of a metallic material having elasticity, and is capable of switching by pressing the axis in a vertical direction. The dome contact 111a is suitable for use as a power switch or a reset switch.

The conductor ring 130a has a plurality of fixing grooves 131a and is fitted into and fixed to the fixing portion 142a of the rotating plate 140a. The rotating plate 140a has a plurality of terminal grooves 143a formed in the circumferential direction. The terminal groove is formed in a via-hole method that is open to both sides of the terminal groove so that the terminal piece described later can be mounted. A plurality of radial grooves are formed in the outer circumferential portion of the rotating plate 140a, and the grooves are equipped with spherical screws with springs to engage with the inner teeth of the mounting portion to be described later to assist light discontinuous rotation.

The shaft 110a and the mounting portion 120a of the completed operation portion pass through the rotating plate and the rotating plate 140a rotates about the axis.

3 shows the assembly of a rotary switch according to an embodiment of the invention.

The fixing part 142a of the operation unit 100a completed in the above-described assembly process is fitted into the groove in the rotary knob 100b to be covered. Therefore, by rotating the rotary knob (100b), the rotating plate unit is rotated together. The operation unit 100a and the rotary knob 100b are installed to penetrate the lower surface of the mounting unit 100c.

A tooth is formed inside the opening of the mounting portion 100c to engage with the spherical screw 141a to assist in discontinuous rotation. The mounting portion 100c has a fixing pin 110c formed of an insulator so that the rotary switch can be mounted on a circuit board to be described below.

Figure 4 is a perspective view of the finished product of the rotary switch used in the embodiment of the present invention from the bottom surface.

The terminal piece 100d of the conductor is mounted in the terminal groove 143a described above. The terminal piece 100d is mounted in electrical contact with the conductor ring 130a and at the same time as protruding from the bottom surface of the rotary switch so as to be in contact with the switching pattern of the circuit board to be described below. The terminal groove 143a shown may be formed in two layers, but as many spaces as possible, more grooves may be formed, and more terminal pieces 100d may be accommodated. As such, if a relatively large number of terminal grooves are secured, a switch having various encoding outputs can be realized by adjusting only the number of terminal pieces 100d regardless of a product to be used. Although the shape of the terminal piece 100d is shown to make the insertion easy to understand, it may be formed by bending one end of the terminal piece so as to slide over the switching pattern of the circuit board. The terminal piece 100d is detachable and can be mounted at a desired number and position according to the intention of the manufacturer.

The above-described rotary switch has described a multifunction switch for operating the dome switch by the shaft 110a and rotating the rotary knob 100b to operate the rotary switch. However, even in the case of a single rotary switch having the same characteristics, It can be easily derived.

5A is a plan view of a circuit board according to an exemplary embodiment of the present invention.

The circuit board 200 includes rotary switch patterns 210 and 220, a dome switch pattern 230, and circuit wirings such as a conventional circuit board. The circuit wiring is covered with insulating resin to protect it from external elements. However, the rotary switch patterns 210 and 220 and the dome switch pattern 230 are electrically exposed to the outside without covering the insulating resin. These switch patterns are formed together with the circuit wiring to be easily formed by removing the resin lamination by a mask process or the like. The switch patterns are plated to protect against external physical shocks and improve conductivity. The plating is preferably nickel plating in consideration of conductive performance and cost.

Unlike the conventional circuit board, the circuit board 200 does not have to include a via hole for soldering an element.

FIG. 5B illustrates the rotary switch pattern 210 shown in FIG. 5A in more detail.

The outer periphery of the rotary switch pattern 210 conforms to the specifications of the lower end of the rotary switch mounting portion 100c described above. The fixing pin 110c of the mounting portion described above is inserted into the concave indentation portion 211, and the lower protrusion of the shaft mounting portion 120a is inserted into and fixed to the concave insertion portion 212.

When the rotary knob 100b is rotated, the rotary plate rotates, and a terminal piece electrically connected to the conductor ring 130a located on the rotary plate 140a slides on a pie-shaped switch pattern formed in the circumferential direction, and in an electrically conductive combination. Switch other outputs accordingly. When the shaft 110a is vertically pressed, the switching pattern formed at the center of the dome contact 111a may be conducted to perform another switching action. Since the above-described rotary switch has been described with a rotary switching function and a dome switching function together, it is obvious that a switch having only a single rotary function may also be applied to a circuit board according to an embodiment of the present invention.

As described above, the rotary switch according to the exemplary embodiment of the present invention may be easily mounted on a circuit board without a soldering process. Thus, it can be easily attached and detached with external equipment when assembling the electronic product.

6 illustrates an assembly process of a key module according to an exemplary embodiment of the present invention.

The rotary switch finished product 100 is mounted to the recess part around the rotary switch patterns 210 and 220. As described above, if the rotary switch pattern has a large number of patterns to have a sufficiently large encoding value, the desired switching operation is possible with a single standard rotary switch 100 and a standard circuit board by adjusting only the number of terminal pieces. . The circuit board further includes a plurality of dome switch patterns 230. The dome switch does not generate a protruding portion on the circuit board, and therefore is preferably used as an embodiment of the present invention. The dome switch contact 320 is electrically connected to the dome switch pattern 230 with a predetermined curvature and elasticity and is protected by the dome switch cover 310.

The key module according to the embodiment of the present invention is preferably composed of switching elements and the switching output value is output to the main board through a separate bus cable 220. The key module is formed close to the outside of the electronics, while the main board is installed inside to be safe from shock and moisture.

Since the key module of the present invention is integrated around a switching function, even if it is a heterogeneous electronic product, it can be installed as long as there is a space in which the key module can be inserted and the main board can be controlled through a cable bus.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

The rotary switch and the circuit board according to the above-described configuration of the present invention and the key module manufactured using the same do not require a soldering process, so are easy to transport and assemble, and by adjusting only the number and position of the conductor terminals, a standard rotary switch and circuit are provided. It has a significant effect of providing various switching functions to the substrate.

1A is an exploded view of a rotary switch of the prior art.

1B is a plan view of a pattern portion of a rotary switch of the prior art.

2 is an exploded view of an operation unit of a rotary switch according to an embodiment of the present invention.

Figure 3 shows the assembly of the operation portion and the mounting portion of the rotary switch according to an embodiment of the present invention.

Figure 4 shows the finished product of the rotary switch according to an embodiment of the present invention.

5A is a plan view of a circuit board according to an embodiment of the present invention.

5B illustrates a rotary switch pattern of a circuit board according to an exemplary embodiment of the present invention.

6 illustrates a key module according to an embodiment of the present invention.

Claims (10)

In a circuit board, A plurality of circuit wirings; A plurality of conductive switch patterns connected to the conductor terminals protruding from the switch and electrically connected to the circuit wiring; An insulating recess corresponding to a fixing pin of the switch so as to mount the switch around the switch pattern while contacting the conductor terminal with the switch pattern, And the switch patterns are electrically connected to each other to output different switching values. The method of claim 1, The switch pattern is formed in a shape of dividing a circle in a plurality of radial direction and a circuit board having a plurality of thicknesses. The method of claim 1, A circuit board further comprising a bus cable connection. The method according to any one of claims 1 to 3, And the switch pattern is plated with nickel. In a switch having a rotary function, A curved dome contact with elasticity, An axis capable of pressing the dome contact in a vertical direction; A rotary knob capable of rotating about the shaft; A rotating plate including a plurality of recesses vertically opened; A conductive ring positioned between the rotary knob and the rotary plate and rotating together with the rotary plate and the rotary knob; A conductor terminal electrically connected to the conductor ring and detachably mounted to a lower recess of the rotary plate; And a mounting portion including a fixing pin capable of fitting the conductor terminal to an insulating recess of the circuit board while contacting the switching pattern of the circuit board. delete The method of claim 5, And a shaft mounting portion, to which the shaft and the dome contact are mounted, the shaft mounting portion being formed at an end of the fixing pin to be fitted to the insulating recess of the circuit board. In the key module including a plurality of switches, A circuit board comprising a plurality of circuit wirings, a plurality of conductive switch patterns electrically connected to the circuit wirings, and an insulating recessed portion formed to mount a switch around the switch pattern; A rotary switch including a conductor terminal protruding toward a lower end, a rotary knob for rotating the conductor terminal, and a fixing pin that can be fitted to the insulating recess while contacting the conductor terminal with the switch pattern, And the rotary switch is detachable from the circuit board, and the conductor terminal slides on the switch pattern to output a plurality of switching values. The method of claim 8, And a dome switch capable of pressing to connect the dome switch patterns. The method of claim 9, And a bus cable for transmitting the switch values of the rotary switch and the dome switches to the outside of the key module.