KR200428464Y1 - A seesaw type switching device - Google Patents

Abstract

The present invention, the seesaw switch body having a pair of push rod through hole on one surface; A printed circuit board disposed at a lower end of the seesaw switch body and having a plurality of tact switches on one surface thereof; A seesaw switch button rotatably mounted to the seesaw switch body; A pair of push rods penetrating through the push rod through hole, one end of which is in contact with the seesaw switch button and the other end of which is in contact with one surface of the tact switch; and a push rod stopper is provided at a lower end of the push rod. Provided is a seesaw switch device provided.

The seesaw switch device according to the present invention has a push rod stopper at the bottom of the push rod, thereby eliminating or minimizing vibration noise between the push rod and the push rod through hole caused by external / internal fine vibration, and ultimately, the seesaw switch button. It is possible to have a feeling of convenience to the operator, to prevent the tact switch and the printed circuit board and the like from being exposed to grease, and to increase the productivity by increasing the ease of assembly, and to reduce the risk of malfunction of the seesaw switch device. It can also be minimized.

Description

Seesaw switch device {A seesaw type switching device}

1 is a schematic cross-sectional view of a seesaw switch device according to the prior art.

Figure 2a is a schematic perspective view of the seesaw switch device according to an embodiment of the present invention.

FIG. 2B is a schematic partial cross-sectional exploded perspective view of the seesaw switch device of FIG. 2A. FIG.

3A is a schematic partial cross-sectional view of a steady state of the seesaw switch device of FIG. 2A.

FIG. 3B is a schematic partial enlarged view of reference numeral “A” of FIG. 3A.

4 is a schematic partial cross-sectional view of an operating state of the seesaw switch device of FIG. 2A.

5A is a schematic perspective view of another example of the push rod of the present invention.

5B is a schematic partial cross-sectional view according to another embodiment of the present invention.

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

100 ... Seesaw Switch Body 200 ... Seesaw Switch Buttons

300 ... push rod 310 ... push rod central axis

320 ... push rod stopper 330 ... tact switch contacts

400 ... printed circuit board 410 ... tact switch

The present invention relates to a switch device, and more particularly, to a seesaw switch device having a structure that eliminates the generation of unwanted operating noise.

BACKGROUND ART Vehicles, such as automobiles, require functions as various convenient means for allowing a user to provide a more stable and comfortable driving state beyond the function as a moving means. Accordingly, the vehicle is equipped with various convenience facilities and various switches for operating and controlling them.

In general, when operation in opposite directions is required, a seesaw switch device or sliding switch device is used such that the vertical movement of the window corresponds to the operation of the front and rear ends, for example, opening and closing a window of a vehicle. In particular, since various switch devices and convenience facilities are installed around the driver's seat, these switch devices must provide the user with a feeling of operation and convenience of switch operation.

1 shows an example of a seesaw switch according to the prior art. The seesaw switch 1 includes a switch button 2 and a push bar 4 disposed at the through hole 6 of the housing 5 so as to be rotatable about a hinge point 3 at an upper portion of the housing 5. And a tact switch 7 disposed inside the housing. In the push bar 4 according to the related art, shaking is prevented to some extent by the tact switch 7 and the switch button 2 for vertical movement, but when the vibration in the direction perpendicular to the push bar 4 occurs, the push bar 4 is pushed. It was not possible to structurally solve the vibration noise generated by the collision between the bar 4 and the through hole 6. Therefore, for this purpose, the prior art inserts grease or the like between the push bar and the through hole, which increases the number of working processes, thereby increasing the manufacturing cost. In addition, the introduction of grease involved a problem that the grease was exposed to the lower tact switch 7 while the push bar was moved along the through hole, and there was a high possibility of causing damage or malfunction of the device.

The present invention is to solve the above problems, the seesaw of the structure that can prevent the reduction of convenience due to unwanted vibration noise and eliminate or minimize the risk of malfunction or device damage due to reduced assembly process or leakage of grease, etc. It is an object to provide a switch device.

The present invention for achieving the above object, the seesaw switch body having a pair of push rod through hole on one surface; A printed circuit board disposed at a lower end of the seesaw switch body and having a plurality of tact switches on one surface thereof; A seesaw switch button rotatably mounted to the seesaw switch body; A pair of push rods penetrating through the push rod through hole, one end of which is in contact with the seesaw switch button and the other end of which is in contact with one surface of the tact switch; and a push rod stopper is provided at a lower end of the push rod. Provided is a seesaw switch device provided.

In the seesaw switch device, the push rod comprises: a push rod central axis, one end of which is in contact with the bottom of the seesaw switch button and which is movable along the push rod through hole, and one of which is in contact with one surface of the tact switch; The push rod stopper may be disposed between the push rod central axis and the tact switch contact, and a lower end of the push rod through hole may be provided with a push rod stopper accommodating housing for the push rod stopper. The push rod end accommodating groove may be provided at a lower surface of the seesaw switch button to accommodate one end of the push rod central axis.

In addition, an upper end of the push rod stopper is provided with a push rod central axis, one end of which is in contact with a lower end of the seesaw switch button and movable along the push rod through hole, and at least one central axis protrusion is formed on an outer circumferential surface of the push rod central axis. It may be provided, the upper end of the push rod stopper is provided with a push rod central axis of which one end is in contact with the bottom of the seesaw switch button and is movable along the push rod through hole, one or more lubricants on the outer circumferential surface of the push rod central axis An accommodation groove may be provided.

Hereinafter, a seesaw switch apparatus according to the present invention will be described with reference to the accompanying drawings. Figure 2a is a schematic perspective view showing a mounting state of the seesaw switch device according to an embodiment of the present invention, Figure 2b is a schematic exploded perspective view of a seesaw switch device according to an embodiment of the present invention. In an embodiment of the present invention, the seesaw switch device 10 includes a seesaw switch body 100, a seesaw switch button 200, a push rod 300, and a printed circuit board 400.

The seesaw switch body 100 includes a seesaw switch body housing 110 and a button mounting unit 120. The seesaw switch body housing 110 is disposed on an upper surface of the printed circuit board 400. In the present embodiment, the lower part of the seesaw switch body housing 110 is open, but the present invention is not limited thereto. That is, various modifications are possible, such as a seesaw switch body base (not shown) may be further provided below the seesaw switch body housing to close the seesaw switch device according to the present invention. The button receiving portion 111 is provided on one surface of the seesaw switch body housing 110, and the push rod through hole 113 is provided on the lower surface of the button receiving portion 111, and the push rope through hole 113 receives the button. It is formed to penetrate toward one surface of the lower printed circuit board 400 from the lower surface of the portion 111.

In addition, a lower surface of the button receiving portion 111 is provided with a button mounting portion 120 for supporting the seesaw switch button 200 to be rotatable. In FIG. 2B, the button mounting unit 120 extends upward from a lower surface of the button receiving unit 111, and a mounting protrusion 121 for supporting the seesaw switch button 200 to be rotatable on a central portion thereof and on an outer side thereof. Is placed. However, the button receiving portion is only one example of the present invention and the present invention is not limited thereto. That is, the seesaw may not be a structure through which the center of the button receiving portion penetrates, and in some cases, the mounting protrusion may be provided inside the seesaw switch button, and a mounting hole engaged with the mounting protrusion may be formed in the button mounting portion. The button mounting portion may take various structures in a range in which the switch button is rotatably mounted.

In the lower part of the seesaw switch body, more specifically, the seesaw switch body housing, the lower end of the push rod through hole is provided with a push rod stopper receiver 117. The effective area of the push rod stopper receiver 117 is larger than the effective area of the push rod through hole 113. The contact surface of the push rod stopper receiving portion 117 and the push rod through hole 113, that is, the push rod stopper contact surface 115 indicated by reference numeral 115 in FIG. Limit direction movement. However, this is only an example of the present invention, and various modifications are possible, such as a push rod stopper may have a structure in which the push rod stopper may contact the lower end of the push rod through hole of the seesaw switch body without having a separate push rod stopper receiver. . In addition, the button receiving portion 111 is taken as a single configuration, but this is intended to facilitate the description of the subject innovation is not limited to the subject innovation.

The printed circuit board 400 is disposed under the seesaw switch body housing 110 of the seesaw switch body 100. Two or more, that is, a plurality of switch actuators are disposed on one surface of the printed circuit board 400. Here, the switch actuator is formed of a push button type tact switch 410 in which a pressing operation is performed by a vertical force on one surface of the printed circuit board 400, but the printing is performed by pushing the seesaw switch button 300. Various configurations may be taken in the range in which the circuit board 400 is operated by a force transmitted perpendicularly to the circuit board 400. In addition, although not shown in detail, one side of the printed circuit board 400 is in electrical communication with a terminal terminal (not shown), so that the electrical signal of the tact switch 410 as a switch actuator is passed through the printed circuit board 400. Is delivered to the outside.

The push rod 300 is disposed above the printed circuit board 400 so that a part of the push rod 300 is disposed through the push rod through hole 113 of the seesaw switch body 100. The push rod according to an embodiment of the present invention ( 300 includes a push rod central axis 310, a push rod stopper 320, and a tact switch contact 330. As shown in FIG. 2B, the push rod central axis 310 contacts the bottom of the seesaw switch button 200. That is, when the operator exerts an external force through the seesaw switch button 200, the external force applied to the seesaw switch button 200 is in contact with the lower end of the push rod end shaft 310 of the push rod central shaft 310. 311).

A tact switch contact portion 330 is provided at a lower end of the push rod 300, and one surface of the tact switch contact portion 330 contacts one surface of the tact switch 410 as a switch actuator disposed on the printed circuit board 400. The tact switch contact portion 330 may be formed as a separate component from the push rod central axis 310 or may be integrally formed in some cases. When the tact switch contact 330 is composed of separate components, the contact sound is prevented to prevent unwanted contact sound caused by external force or minute vibration between the tact switch contact 330 and the tact switch 410. The tact switch contact portion 330 is preferably selected to be a material that can be deformed or minimized.

The push rod stopper 320 is directly connected to the push rod central axis 310 at the bottom of the push rod. In FIG. 2B, the push rod stopper 320 is disposed between the push rod central axis 310 and the tact switch contact 330. Is placed. The push rod stopper 320 has a radius (or an effective radius) larger than the push rod center axis 310 and has an end portion extending outward of an area overlapping the push rod center axis 310. The push rod stopper 320 may be accommodated in the push rod stopper receiver 117 formed at the lower end of the push rod through hole 113 of the seesaw switch body housing 110, and an upper surface of the push rod stopper 320 may be push rod stopper. The receiving part 117 may be in contact with the one surface 115 facing the printed circuit board 400.

Hereinafter, an operating state of an embodiment of the present invention will be described with reference to FIGS. 3A to 4. 3A and 4 show schematic cross-sectional views of a seesaw switching state before and after the seesaw switching device according to an embodiment of the present invention, and FIG. 3B is a schematic view of a portion indicated by reference numeral “A” of FIG. 3A. 4 is an enlarged cross-sectional view, and FIG. 4 illustrates a state in which an external force is applied to the seesaw switch button of FIG. 3A, where FIG. 4 is a view of some overlapping components to make the description of the design of the invention more clear. Omitted.

First, in the case that the external force is not applied by the operator in Figure 3a, through the engaging projection 121 of the button mounting portion 120 of the button mounting portion 120 of the seesaw switch body 100 and the button mounting hole 210, the seesaw switch button ( 200 maintains an equilibrium state with respect to the button receiving portion 111 of the seesaw switch body housing 110. That is, the push rod end 311 is the same so as to be in contact with the top surface of the pair of tact switches 410 by the preset elastic force of the tact switch 410 as the switch actuator disposed on the printed circuit board 400. The pair of push rods 300 that maintain the height and penetrate the push rod through hole 113 are in contact with the lower end of the seesaw switch button 200, so that the seesaw switch is pivotally supported around the mounting protrusion 121. The button 200 is stably supported. Here, referring to FIG. 3B, grease G may be disposed between the push rod central axis 310 and the push rod through hole 113. When grease G is disposed in the space therebetween, the push rod stopper ( Through the interaction between the upper surface of the 320 and the one surface 115 of the push rod stopper receiver 117 toward the printed circuit board 400, the grease G enters the lower portion and flows out of the tact switch 410. It can also be prevented. That is, when the push rod stopper 320 is accommodated in the push rod stopper accommodating part 117, one end surface of the push rod stopper 320 may move the printed circuit board 400 of the push rod stopper accommodating part 117. By forming the push rod 300 to be stably supported in contact with the one surface 115 facing, limiting the upward movement of the push rod 300 and the vibration of the push rod 300 caused by external or internal fine vibration In addition, the lubricant, such as grease, is pushed out of the push rod through hole 113 and exposed to the tact switch 410 between the push rod central axis 310 and the push rod through hole 113. Malfunctions or damages such as 410 may be prevented.

Meanwhile, some play may occur between the seesaw switch button 200 and the push rod 300 and between the push rod 300 and the tact switch 410, but it is possible to prevent unwanted vibration noise caused by fine vibration. In order to do this, these components are preferably formed in a structure in which all of them touch.

Then, as shown in FIG. 4, when an external force is applied to a position spaced apart from the center of the seesaw switch button 200 by the operator, the seesaw switch button 200 is attached to the mounting protrusion 121 as a rotating center hinge. And rotates around the button mounting port 210. When the seesaw switch button 200 rotates in one direction, an external force is transmitted to the push rod 300 and the tact switch 410 on the rotation direction side so that the tact switch 410 is deformed by a predetermined gap d. This causes the push rod end 311 of the push rod 300, which is a kinematic rigid body, to move down by the same gap d. On the other hand, the push rod end 311 of the push rod 300 on the other side of the rotation direction of the seesaw switch button 200 is separated from the lower end of the seesaw switch button 200 and is maintained as a free end. However, the initial elastic force by the tact switch 410 is provided to the push rod 300 and the push rod 300 is engaged with and supported by the push rod stopper receiver 117 formed at the bottom of the seesaw switch body housing 110. In addition, the vibration noise due to the collision between the push rod and the push rod through hole due to external / internal fine vibration does not occur.

Then, when the external force acting on the seesaw switch button 200 is removed, the push rod lowered by the elastic restoring force of the tact switch as the switch actuator moves to the original position, and the seesaw switch device returns to the state of FIG. 3A.

Meanwhile, in the above embodiment, the push rod end 331 of the push rod 300 contacts the bottom of the seesaw switch button 200. 6A shows a schematic rear perspective view of the seesaw switch button 200a. The seesaw switch button 200a may have a “T” shaped extension in which a portion for engagement with the push rod 300 protrudes inward from the outer edge. In addition, the push rod end accommodating groove 220 may be further provided at a lower end of the seesaw switch button 200 without being limited thereto. 6A is a schematic rear perspective view of the seesaw switch button 200 according to an embodiment of the present invention. The lower surface of the seesaw switch button 200 is formed with a push rod end receiving groove 220 for receiving and contacting the push rod end 331. The push rod center shaft having a large aspect ratio through the push rod end receiving groove 220 ( Smooth transfer between the seesaw switch button 200 and the push rod end 331 by allowing the transfer of the force generated between the push rod end 331 as the end of the 310 and the seesaw switch button 200 to be concentrated in a certain position. Displacement or deformation in the direction of the rotation axis of the seesaw switch button 200 due to poor contact may be prevented from occurring. In addition, although not shown, in order to prevent the friction between the seesaw switch button 200 and the push rod 300 and the resulting noise mainly formed of a hard material, separate to the push rod end receiving groove 220 Various modifications are possible, such as taking a structure in which the soft material of the metal is further filled.

In addition, in the above embodiments, the push rod central axis provided in the push rod is formed as a simple rod type, but the present invention is not limited thereto, and the push rod central axis may take various configurations. 5A shows a push rod 300a according to another embodiment of the present invention. The push rod 300a includes a push rod central axis 310a and a push rod stopper 320a, and one or more central axis protrusions 340a are further provided on an outer circumferential surface of the push rod central axis 310a. The central axis protrusion 340a has a structure disposed radially from the push rod central axis 310a, which may be formed integrally with the push rod central axis 310a, and in some cases, as a separate component. It may be formed and disposed on the push rod central axis 310a. The central axis protrusion 340a is spaced apart from the push rod through hole 113 at a minimum distance, thereby reducing the material cost and weight, and simultaneously pushing the central rod 310a and the push rod through hole 113 having a large aspect ratio. It is possible to more surely eliminate the vibration noise that may occur due to the fine vibration between. Here, the central axis protrusion 340a is formed in a ring shape, but this is just an example for explaining the present invention, the central protrusion protrusion 340a may be formed in a plurality of pin type, such as radial direction from the push rod central axis It may take a variety of configurations in the range extending to.

In addition, the outer peripheral surface of the push rod central shaft of the present invention may be further provided with a lubricant receiving groove. That is, as shown in FIGS. 6A and 6B, when a lubricant such as grease G is disposed between the push rod central shaft 310a and the push rod through hole 113, the grease G is the push rod center. By being disposed in the lubricant accommodating groove 350a formed on the outer circumferential surface of the shaft 310a, the grease G is always maintained in the lubricant accommodating groove 350a so that the push rod central shaft 310a is push rod through hole 113. In the case of moving along the center, the push rod central axis 310a / center shaft protrusion 340a and the push rod through hole 113 may be constantly and smoothly lubricated.

The above embodiments are examples for describing the present invention, but the present invention is not limited thereto. That is, the push rod stopper is provided in the lower part of the push rod, such as a coil spring other than a tact switch as a switch actuator may be further provided to reinforce the elastic restoring force applied to the push rod and further increase the feeling of operation. Various modifications are possible within the range.

Seesaw switch device according to the present invention having the configuration as described above has the following effects.

First, the seesaw switch device according to the present invention has a push rod stopper at the bottom of the push rod, thereby eliminating vibration noise generated between the push rod and the push rod through hole caused by external / internal fine vibration and ultimately, the seesaw switch button. To minimize it, so that the operator can feel comfortable.

Second, the seesaw switch device according to the present invention, through the engagement of the push rod stopper disposed under the push rod and the push rod stopper receiver disposed under the seesaw switch body housing, a lubricant such as grease may be pushed in some cases. When disposed in the through hole, the tact switch and the printed circuit board as the switch actuator are prevented from being exposed to grease, so that the productivity can be increased by increasing the ease of assembly, and the risk of malfunction of the seesaw switch device is minimized. You can also

Third, the seesaw switch device according to the present invention may further include a switch contact portion including a soft material under the push rod to remove or reduce friction noise with a tact switch as a switch actuator, and further increase the operational feeling.

Fourth, the seesaw switch device according to the present invention is further provided with a central axis projection on the outer periphery of the push rod central axis, thereby guiding the movement of the push rod central axis with a high aspect ratio more stably, and reducing the possibility of noise with the push rod through hole. It may be eliminated or minimized.

Fifth, the seesaw switch device according to the present invention, by having a push rod end receiving groove at the bottom of the seesaw switch button, so that the transfer of force between the seesaw switch button and the push rod can be made stably, displacement of the seesaw switch button in the rotational axis direction To deformation can be prevented.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the utility model registration claims attached.

Claims (5)

Seesaw switch body having a pair of push rod through hole on one surface; A printed circuit board disposed at a lower end of the seesaw switch body and having a plurality of tact switches on one surface thereof; A seesaw switch button rotatably mounted to the seesaw switch body; And a pair of push rods penetrating through the push rod through holes, one end of which is in contact with the seesaw switch button and the other end of which is in contact with one surface of the tact switch. Seesaw switch device is provided with a push rod stopper at the bottom of the push rod. The method of claim 1, The push rod is: A push rod central axis having one end in contact with a lower end of the seesaw switch button and movable along the push rod through hole; One end has a tact switch contact portion in contact with one surface of the tact switch, The push rod stopper is disposed between the push rod central axis and the tact switch contact portion, and a push rod stopper accommodating portion for accommodating the push rod stopper is provided at a lower end of the push rod through hole. . The method of claim 2, Seesaw switch device is characterized in that the lower surface of the seesaw switch button is provided with a push rod end receiving groove for receiving one end of the push rod central axis. The method of claim 1, An upper end of the push rod stopper is provided with a push rod central axis, one end of which is in contact with a lower end of the seesaw switch button and is movable along the push rod through hole. Seesaw switch device characterized in that the outer circumferential surface of the push rod central axis is provided with at least one central axis projection. The method of claim 1, An upper end of the push rod stopper is provided with a push rod central axis, one end of which is in contact with a lower end of the seesaw switch button and is movable along the push rod through hole. Seesaw switch device characterized in that the outer peripheral surface of the push rod central shaft is provided with one or more lubricant receiving groove.

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