KR20010099395A - Rotary switch operated by lever - Google Patents

Abstract

The present invention relates to a lever drive rotary switch, wherein a fixed terminal having a silver coating contact is assembled on one surface thereof, and the contact is located above and vertically on the contact surface of the fixed terminal on the other surface thereof, and a downward pressure is applied to the upper surface thereof. A case bottom plate having a resilient restoration terminal capable of contacting the contact of the fixed terminal with a contact, the center of which has a lower shaft insertion hole for inserting a lower end of the rotary shaft; It consists of a rotating shaft that can be fastened to the lower end of the rotating shaft and a circular rotating plate extending outwardly from a portion of the rotating shaft, the lower surface of the rotating plate is pressed down the upper surface of the elastic restoring terminal when rotating A rotor having a protruding crimp portion formed such that a contact and a contact of the fixed terminal are in contact with each other; Known rotor rotating part that can rotate the rotor in one direction by connecting and pulling a string to one end of the lever; assembled to match the case base plate, and accommodates the rotor and the rotor rotating part therein And a case body formed with a rotary shaft upper insertion hole for inserting an upper end of the rotary shaft of the rotor, and makes it easy to operate a wall-mounted heater installed at a location that is hard to reach a user. .

Description

Lever Drive Rotary Switch {ROTARY SWITCH OPERATED BY LEVER}

The present invention relates to a rotary switch (ROTARY SWITCH), and more particularly to a rotary switch for a wall-mounted heater for driving by connecting the string to the lever (LEVER) and pulled downward.

It is very convenient to use lever-driven rotary switches as switches for wall-mounted fans or wall-mounted heaters. This is because opening and closing of each terminal can be performed by simply pulling the string connected to the lever.

For this reason, a lever-driven rotary switch that opens and closes terminals by turning the power of the wall-mounted fan on or off or pulling down the string fastened to the lever with a switch for speed control to rotate the rotor inside. Has been adopted. These conventional lever drive rotary switches have a rotor which rotates by a predetermined angle in the same direction each time the lever is pulled, and a slide switch is formed at the lower portion of the rotor to perform opening and closing between each terminal.

Such conventional lever drive rotary switches cannot be used as it is in a wall heater. Because the power consumption of the fan is about 200 watts (current: about 1.0 amps), it is possible to switch between terminals using a slide switch having a relatively large contact resistance, but in the case of a heater, the power consumption is usually 600 watts (WATT) or more. (Current: 3 amps or more) If the slide switch is used, contact sparks are generated due to instantaneous high voltage and the contact surface is easily damaged. In order to prevent the occurrence of contact sparks, a silver coating having good conductivity may be considered on the surface where sliding occurs, but silver has a weak hardness and thus may be peeled off by friction when sliding, which is not a preferable solution.

Therefore, the lever-driven rotary switch is not used as a wall-mounted heater switch, and a protrusion is formed on the rotary shaft driven by the knob KNOB to enable sequential terminal switching. With a number of resilient restoration terminals to be restored upwards, when the knob is rotated and the projection presses the upper surface of the resilient restoration terminals, the contacts of the resilient restoration terminals go down and contact with the contacts of the terminals installed downwards to become closed and resilient restoration. When the projection is removed from the terminal, the knob-driven rotary switch opened by the elasticity of the elastic restoration terminal itself is generally used. In the rotary switch of this structure, the contact between the contacts of the terminals is not caused by sliding, but is caused by the vertical movement of the resilient restoring terminal, and the silver coating is possible on the contacts, thus greatly reducing the contact resistance.

However, in view of the fact that the knob-driven heater switch is installed at a relatively high position, it is obvious that the knob drive heater switch is inconvenient for the user. In other words, when a lever-driven rotary switch is used, the heater installed in a high position can be easily driven by connecting a long string to the lever, but the knob-driven heater switch needs to be touched by a knob attached to the heater. There is an inconvenience, such as to listen to.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a lever driving rotary switch structure which is driven by a lever and in which a contact of each terminal is made by vertical movement of a terminal contact. .

1 is an external perspective view of a lever drive rotary switch according to the present invention.

Figure 2a is an exploded perspective view of the lever drive rotary switch according to the present invention.

FIG. 2B is a cross-sectional view along the line AA ′ in FIG. 2A.

FIG. 2C is a cross-sectional view taken along the line BB 'in FIG. 2A.

FIG. 3 is a detailed part view showing in detail a case base plate assembled with a terminal of a lever drive rotary switch and a rotor assembled with a compression spring and a lever according to the present invention.

Figure 4 is a detailed part view showing in detail the lower rotor portion of the lever drive rotary switch according to the present invention.

Figure 5 is a flow chart showing the operation of the lever drive rotary switch step by step in accordance with the present invention.

* Description of the symbols for the main parts of the drawings *

10: case body 20: compression spring 30: lever 40: rotor

50: case bottom plate

The lever drive rotary switch according to the present invention

On one surface, a fixed terminal having a silver coating contact is assembled. On the other surface, if the contact is located vertically above the contact of the fixed terminal and a downward pressure is applied to the upper surface, the contact can contact the contact of the fixed terminal. Resilient restoring terminal is assembled, the center of the case bottom plate formed with a rotary shaft lower insertion hole for inserting the lower end of the rotary shaft;

It consists of a rotating shaft that can be fastened to the lower end of the rotating shaft and a circular rotating plate extending outwardly from a portion of the rotating shaft, the lower surface of the rotating plate is pressed down the upper surface of the elastic restoring terminal when rotating A rotor having a protruding crimp portion formed such that a contact and a contact of the fixed terminal are in contact with each other;

A known rotor rotating part capable of rotating the rotor in one direction by connecting and pulling a string to one end of the lever;

And a case body assembled with the case base plate to accommodate the rotor and the rotor rotating part therein, and having a rotary shaft upper end insertion hole capable of inserting an upper end of the rotary shaft of the rotor.

The rotor rotating part is continuously formed on the upper surface of the rotor rotating plate while maintaining the same distance as the outer peripheral surface, has a gentle inclination in the direction of rotation of the rotor, the protruding projection engaging jaw having a vertical inclination in the direction opposite to the rotation of the rotor; Pulling the handle of the lever in the rotational direction is caught by the protruding projection locking jaw and the rotation projection projection for transmitting the power to rotate the rotor and the compression spring to hang one end of the compression spring to restore the lever handle to its original position after the rotor rotation A lever having a spring engaging jaw; Compression spring fixing jaw formed in the case body; and one end thereof is caught by the compression spring locking jaw, the other end is fixed to the compression spring fixing jaw is composed of a compression spring to restore the lever handle to its original position after the rotor rotation.

The case body is fixed to the elastic strip bent in the V shape in the center, or to form a receiving space in the cylindrical assembly (ball) is compressed by the coil spring and the coil spring (see Fig. 2c), the upper surface of the rotating plate It is preferable to form a stop recess for accommodating the bent portion or the ball of the elastic strip so that the rotation angle is reliably achieved at every rotation.

Hereinafter, an embodiment of a lever drive rotary switch according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figures 1 and 2a, Figure 1 shows a state in which only the switch is laid down, but in actual use by connecting the pull line to the pull line insertion hole 31 of the end of the lever handle 32 to move in the vertical direction It is installed so that. The lever handle 32 is assembled to protrude outward through the lever opening 12 of the case body 10.

The shape of the case body and the case base plate need not necessarily be a rectangular parallelepiped as shown in Fig. 1, and can be modified within the scope of not impairing the function of the present invention.

Although the lever drive rotary switch illustrated in FIGS. 2A to 5 illustrates one fixed terminal T0 and three elastic restoring terminals T1, T2, and T3 that are opened and closed with the fixed terminal, the present embodiment is illustrated. The lever drive rotary switch according to the invention can appropriately change the number of terminals and the terminal shape as necessary.

Figure 2a is an exploded perspective view of the lever drive rotary switch according to the present invention. As shown in FIG. 2A, the lever drive rotary switch according to the present invention is divided into a case base plate 50 and a case base plate 50 in which a plurality of terminals are assembled and need to be opened and closed, and a predetermined push switch while rotating. Rotor 40 to perform the function, the lever 30 for rotating the rotor, the compression spring for automatically restoring the lever handle 32 rotated downward by the user's pull back to the original position when the user releases the pull. And the case body 10 for accommodating the rotor 40, the lever 30, and the compression spring 20, supporting the upper portion of the rotor rotation shaft, and fixing the other end 21 of the compression spring 20. It is composed.

Looking at the method of assembling the components by way of example, first insert the compression spring 20 and the lever 30 in the outer case of the upper support portion 15 of the rotating shaft of Figure 2b, but the other end of the compression spring 20 Is fixed to the compression spring fixing jaw (11) of the case body, one end of the compression spring (21) is assembled by hanging on the compression spring engaging jaw (34) of the lever. After the rotor 40 is laid thereon, the case base plate 50, in which terminals T0, T1, T2, and T3 are assembled in advance, is screwed into the case body 10.

The apparatus for rotating the rotor 40 may be implemented in various ways using a conventional rotor rotating unit. That is, the rotating part of the lever drive rotary switch for a conventional wall-mounted fan can be applied as it is. 2A and 3 show a rotor pivot of a modified configuration to suit the present invention.

Turning to the rotor with reference to Figures 2a and 3 as follows.

2 to 5 illustrate a case in which the rotor rotates clockwise by 60 degrees every time the lever of the rotor is pulled once. In the state in which the lever drive rotary switch according to the present invention is assembled, the lever handle 32 is always set aside toward the upper portion of the lever opening 12 by elasticity of the compression spring. In addition, in the state in which the lever handle 32 is set aside toward the upper portion of the lever opening 12, the pivot driving protrusion 33 of the lever is assembled to be caught by the vertical inclined surface of the protruding protrusion locking jaw 41 of the rotor. When the lever handle 30 is pulled down in the installed state, the pivot driving protrusion 33 of the lever pushes the pushing projection locking jaw 41 of the rotor clockwise to rotate the rotor. Rotation angle for each pull is predetermined in design, but six propulsion projection catching jaws 41 of the rotor are required to rotate by 60 degrees, and propulsion projection catching jaw of the rotor is required to rotate by 120 degrees. You will need three.

As shown in FIG. 3, the V-shaped elastic strip 17 is fixed to the upper part of the case body, or a housing is formed in a cylindrical shape to assemble a ball assembly squeezed by the coil spring and the coil spring. A stop groove 42 for seating the bent portion of the strip 17 or the ball is formed at the outer periphery of the propelling projection catching jaw 41, so that the lever handle 32 is rotated by a certain angle every time the lever handle 32 is pulled once. It is preferable to configure to stop after.

Hereinafter, with reference to FIGS. 4 and 5, the opening and closing of the terminals assembled to the case base plate when the rotor rotates by 60 degrees will be described.

Referring to FIG. 4, the bottom of the rotor 40 rotating plate is pressed downward while pressing the vertices P1, P2, and P3 of the elastic restoring terminals T1, T2, and T3 assembled to the case base plate 50 when the rotor is rotated. Protruding crimping parts E1, E2, E3, E4, and E5, which can be pushed inwardly, are formed in accordance with certain rules. The shape and number of these protruding crimps E1, E2, E3, E4, E5 depend entirely on the opening and closing order of the terminals required for the switch. Therefore, when the opening and closing order between the terminals is different, the shape and number of the projecting crimping portion must also be different so as to correspond thereto, and the limitation of the shape and the number is not the technical gist of the present invention.

Fig. 5 schematically shows the positional correlation between the projecting compression parts E1, E2, E3, E4, E5 and the elastic restoring terminals T1, T2, T3 of the case base plate at each rotation stage of the rotor.

When the rotor is located in Fig. 5A, no protrusion crimping presses the vertex of the terminal, so that all the elastic restoring terminals are opened with the fixed terminal T0.

When the rotor is located in Fig. 5 (b), a certain protrusion crimp E1 compresses the apex P3 of the T3 terminal to make contact with the contact C3 and the contact C30 (see Fig. 3), and the protrusion crimp E3 is T1. The vertex (P1) of the terminal is crimped to make contact between the contact C1 and the contact C10. In addition, the protruding crimping portion E5 compresses the vertex P2 of the terminal T2 so that the contact C2 and the contact C20 come into contact with each other.

Correlation diagrams shown in (C) to (B) can also analyze the opening and closing of terminals by the same method.

In this way, the lever drive rotary switch according to the present invention can realize the opening and closing between the terminals in a variety of orders by adjusting the position, shape and number of the projecting compression point.

As described above, embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to one embodiment of the present invention.

According to the present invention, since the operation of the wall-mounted heater can be connected to the lever handle, it is possible to easily operate the heater, which is installed in a position where the user cannot reach easily, and the power consumption is large and installed in addition to the heater. Has the advantage that it can be used in other products that are difficult to operate the switch.

Claims (3)

On one surface, a fixed terminal having a silver coating contact is assembled. On the other surface, if the contact is located vertically above the contact of the fixed terminal and a downward pressure is applied to the upper surface, the contact can contact the contact of the fixed terminal. Resilient restoring terminal is assembled, the center of the case bottom plate formed with a rotary shaft lower insertion hole for inserting the lower end of the rotary shaft; It consists of a rotating shaft that can be fastened to the lower end of the rotating shaft and a circular rotating plate extending outwardly from a portion of the rotating shaft, the lower surface of the rotating plate is pressed down the upper surface of the elastic restoring terminal when rotating A rotor having a protruding crimp portion formed such that a contact and a contact of the fixed terminal are in contact with each other; Known rotor rotating part that can rotate the rotor in one direction by connecting and pulling a string to one end of the lever; And And a case body assembled with the case base plate to accommodate the rotor and the rotor rotating part therein, and having a rotary shaft upper end insertion hole capable of inserting an upper end of the rotary shaft of the rotor. Driven rotary switch. The rotor rotating part of claim 1, wherein the rotor rotating part is continuously formed on the upper surface of the rotor rotating plate while maintaining the same distance as the outer circumferential surface, and has a gentle inclination in the rotation direction of the rotor, and a vertical inclination in the opposite direction of rotation of the rotor. Propelling projection having a jaw; Pulling the handle of the lever in the rotational direction is caught by the protruding projection locking jaw and the rotation projection projection for transmitting the power to rotate the rotor and the compression spring to hang one end of the compression spring to restore the lever handle to its original position after the rotor rotation A lever having a spring engaging jaw; Compression spring fixing jaw formed in the case body; and one end thereof is caught by the compression spring locking jaw, the other end is fixed to the compression spring fixing jaw is composed of a compression spring for restoring the lever handle to its original position after the rotor rotation Lever driven rotary switch. According to claim 1, wherein the case body is fixed to the elastic strip bent in the V-shaped center, or to form a receiving space in a cylindrical assembly (ball) is compressed by the coil spring and the coil spring (ball) assembly, the rotating plate Lever drive rotary switch characterized in that the outer surface further formed a stop groove for accommodating the bent portion or the ball of the elastic strip.