KR100567254B1 - Audio/Video system - Google Patents

Abstract

The present invention relates to an AV system which can improve the reliability of the product by effectively absorbing the flow in the left and right direction generated during the tilting operation of the monitor to prevent driving noise and vibration.

Description

Audio / Video system

1A is a perspective view showing a conventional AV system.

FIG. 1B is a perspective view of a mechanism for monitor tilting of FIG. 1A. FIG.

2 is a perspective view showing a coupling structure of a slide chassis and a bottom chassis in an AV system according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line B-B of FIG.

4 is a detailed view showing a detailed structure of the drive gear unit shown in FIG.

5 is a detailed view showing the detailed structure of the horizontal tension control unit shown in FIG.

6 is a cross-sectional view taken along the E-E section of FIG.

<Description of the symbols for the main parts of the drawings>

100: bottom chassis 200: slide chassis

206,350 Rail section 208,352 Rail groove

210,354: Rail guide 212: Rack gear part

230: motor 232: worm

240: drive gear unit 241, 243, 245: first, second, third gear

242,244,246: 1,2,3 driven gear 247: sensing gear

250: circuit part 252,253,254: shaft

260: fixing bracket 300: horizontal tension control unit

310: tension plate 312: bottom plate

314: side plate 316: incision

318: contact portion 320: guide roller

321: axis 333: embossing

330,340: Lower / guide member 332: Central hole

360: leaf spring

The present invention relates to an AV system, and more particularly, to an AV system capable of effectively absorbing the lateral flow generated during tilting of a monitor to improve product reliability.

Recently, as cars are getting more and more advanced, various cars with various advanced options have been released indoors. Among these options, various information such as traffic conditions, road information, and guidance maps required for driving to the destination are frequently changed. Devices that can be used are mounted indoors. For example, a car audio / video system (hereinafter, AV system) equipped with a device capable of watching TV or equipped with a navigation system, which is an automatic navigation system, is used.

A monitor is formed on the front panel of such an AV system, and a car audio cassette player or a compact disc player is installed inside the front panel, and the monitor is tilted by adjusting the angle by a predetermined angle to view the monitor or cassette in the cassette player. I can change a tape.

An example of such an AV system having a monitor tilting device is shown in detail in Korean Patent Publication No. 2002-0006075 and Utility Publication No. 2000-0011042.

FIG. 1A is a perspective view illustrating a conventional AV system, and FIG. 1B is a monitor tilting mechanism of FIG. 1A, which shows a structure in which a slide chassis slides on a bottom chassis.

As shown in Figs. 1A and 1B, a conventional AV system has a main body 10 embedded in a cartridge formed on an instrument panel of a motor vehicle.

The monitor 15 is mounted on the front of the main body 10, and the monitor is installed to be tiltable.

The bottom chassis 20 is fixedly disposed at the bottom of the main body 10, and the slide chassis 30 hinged to the bottom of the monitor 15 is installed at the top of the bottom chassis 20 so as to slide forward and backward in a forward and backward direction. .

A plurality of rollers 22 are arranged on the left and right inner surface of the bottom chassis 20 at regular intervals, and a long hole 31 in which the rollers 22 can be inserted is formed on the left and right sides of the slide chassis 30 corresponding thereto. In this way, the slide chassis 30 can be guided through the roller 22 during the advancing and retreating movement.

In addition, a plurality of rollers 24 are installed on both sides of the bottom surface of the bottom chassis 20, and a long hole 32 into which the rollers 24 can be inserted is formed in the slide chassis 30. It is to be guided through the roller 24 during the retraction movement of the 30.

However, in the conventional AV system having a guide system by a roller inserted in the long hole as described above, the load of the slide chassis 30 due to the open / close of the monitor due to the warp of the monitor is a problem that takes a lot of load. there was.

In addition, when the long hole 32 is formed in the slide chassis 30, since a cutting is usually performed by using a press, a burr ("A" in the figure) is generated inside the press-formed long hole 32. The roller 24 is caught by the burr during the linear movement of the slide chassis 30, so that the movement of the slide chassis 30 was not smooth.

Accordingly, there is a problem that irregular flow is generated in the left and right directions when the tilting action of the monitor causes noise and vibration, and the tilting operation of the monitor is not smoothly performed.

Accordingly, the present invention has been made to solve the above-described problem, an object of the present invention is to adjust the horizontal tension that can absorb the horizontal flow of the slide chassis on the bottom chassis opposed to the rack gear portion engaged with the gear driving portion By providing the unit, it is possible to provide an AV system that can improve the reliability of the product by suppressing the flow of fine left and right through the horizontal tension control unit during the forward and backward movement of the slide chassis.

AV system of the present invention for achieving the above object is a bottom chassis disposed at the bottom of the main body; A slide chassis slidably installed on the bottom chassis and having a rack gear part formed at one side thereof; A drive gear unit meshed with the rack gear part to move the slide chassis forward and backward; And a horizontal tension adjusting unit installed on the bottom chassis and elastically supporting the other side portion of the slide chassis.

According to the above configuration, since one side of the side of the slide chassis is supported by the engagement of the drive gear unit of the rack gear portion, the other side is kept elastically supported by the horizontal tension adjusting unit, so that the slide chassis moves forward and backward. The minute left and right flow can be effectively absorbed through the horizontal tension control unit.

In addition, the AV system according to the present invention is configured to further include a rail portion formed in the sliding direction on the bottom surface of both side portions of the slide chassis, and a rail guide is installed in the bottom chassis and the rail portion is engaged.

According to this configuration, the sliding action is free by the contact structure of the rail portion and the rail guide during the forward and backward movement of the slide chassis can prevent a relatively large flow in the left and right direction.

In addition, the horizontal tension adjustment unit is a guide roller in contact with the other side portion of the slide chassis, a tension plate fixed to the bottom chassis so that the guide roller is elastically supported, the guide roller is rotatably supported and the tension plate The center hole is formed is accommodated is configured to include a lower plate which is slid in the left and right in the upper side of the bottom chassis and the guide member is guided to the lower plate.

According to such a configuration, even when an external force is applied to the slide chassis, the guide roller is elastically flown in the horizontal direction along with the lower plate while being supported by the tension plate, and can effectively absorb minute vibrations.

In addition, an embossing may be formed on the bottom of the lower plate.

In this case, friction resistance can be minimized because the bottom plate and the bottom chassis upper surface can be in point contact.

In addition, the guide member may be integrally formed with the rail guide.

In this case, since the guide member and the rail guide do not need to be provided separately, the number of parts can be reduced, thereby simplifying the internal structure and improving the assemblability.

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

2 is a perspective view illustrating an AV system according to an embodiment of the present invention, in which a slide chassis is coupled to a bottom chassis of the present invention. 3 is a cross-sectional view taken along the line B-B of FIG. 2.

2 and 3, the AV system according to the present invention is the bottom chassis 100 is fixed to the lower end of the main body (not shown), and the front and rear direction ("X" direction of the figure in the top of the bottom chassis 100) It includes a slide chassis 200 which is slidably mounted.

The slide chassis 200 has an "U" shape of the front portion 202 and the two side portions 204a and 204b, and is injection molded from a nonferrous metal such as a magnesium alloy during manufacture.

In addition, a bottom portion of each of the side surface portions 204a and 204b of the slide chassis 200 protrudes downward in a predetermined width to form a rail portion 206 that is elongated in the front-rear direction of the slide chassis 200.

In addition, a rail guide 210 having a rail groove 208 into which the rail portion 206 may be inserted is fixed to an upper surface of the bottom chassis 100.

Accordingly, the slide chassis 200 is slid in the front-rear direction while the rail unit 206 is guided while being engaged with the rail groove 208, so that the slide chassis 200 is moved in the left-right direction ("Y" in the drawing) during the retreat movement process of the slide chassis 200. Horizontal flow in the &quot; direction &quot; is suppressed.

On the other hand, on the inner surface of one side portion 204a of the slide chassis 200, a rack gear portion 212 in which a plurality of teeth are arranged in a straight line is formed.

The rack gear portion 212 may be fixed to a separate structure on one side portion 204 of the slide chassis 200 as in a conventional general structure, but preferably, as in the embodiment of the present invention, the slide chassis ( It is molded integrally at the time of manufacture.

In addition, a drive gear unit 240 may be installed on the top surface of the bottom chassis 100 to move the slide chassis 200 forward and backward.

4 is a detailed view showing the detailed structure of the drive gear unit 240 shown in FIG. As shown, the drive gear unit 240 is rotated together with the first gear 241 and the first gear 241 is engaged with the worm (232) fixed to the shaft of the motor 230 The second driven member rotated together with the first driven gear 242, the second gear 243 engaged with the first driven gear 242, and the second gear 243 engaged with the rack gear part 212. Gear 244.

In addition, a third gear 245 is engaged with the second driven gear 244, and a third driven gear 246 rotated together with the lower portion of the third gear 245 to measure the rotation speed. It forms a structure that rotates in engagement with the sensing gear 247 in the circuit portion 250.

The first gear 241 and the first driven gear 242, the second gear 243 and the second driven gear 244, and the third gear 245 and the third driven gear 246 are respectively supported. Shafts 252, 253, 254 are supported through fixing brackets 260 fixed to the top surface of the bottom chassis 100.

Accordingly, even if an external force acts on the drive gear unit 240, the interaxial distance between the shafts 252, 253, and 254 may be constantly maintained through the fixing bracket 260.

In addition, the circuit unit 250 and the motor 230 are electrically connected to a controller (not shown), respectively, to transmit a sensed signal or to control driving.

On the other hand, the upper surface of the bottom chassis 100 facing the drive gear unit 240 supports the other side portion 204b of the slide chassis 200, and suppresses horizontal flow in the left and right directions when the slide chassis 200 moves forward and backward. Horizontal tension adjustment unit 300 to be installed is installed.

5 is a detailed view showing a detailed structure of the horizontal tension control unit 300 shown in Figure 2, Figure 6 is a cross-sectional view of the section E-E of FIG. As shown in FIGS. 5 and 6, the horizontal tension control unit 300 may include a tension plate 310 to impart an elastic force to the left and right directions of the slide chassis 200, the tension plate 310, and the slide chassis ( And a guide roller 320 that is in contact with and rotates at the side portion 204b of the 200.

The guide roller 320 is rotatably supported through the shaft 321 on one side of the lower plate 330.

At this time, the shaft 321 is fixed so as not to flow on the lower plate 330 through a suitable fixing method such as welding.

In addition, the central portion of the lower plate 330 is formed with a central hole 332 to accommodate the tension plate 310, the bottom portion around the central hole 332 has a hemispherical shape and a plurality of protruding downward Embossing 333 is formed.

At this time, the center hole 332 is provided with a suitable size capable of sliding a certain distance in the left and right direction in a state where the tension plate 310 is accommodated.

In addition, the lower plate 330 is provided to slide in the left and right direction in point contact with the upper surface of the bottom chassis 100 through the embossing (333).

On the other hand, the tension plate 310 is composed of a bottom plate 312 that is directly fixed to the upper surface of the bottom chassis 100, and the side plate 314 of the "c" shape upright with respect to the bottom plate 312, the external force of When the side plate 314 has an elastic force in the left and right direction when acting, a cutout portion 316 partially cut at the connection portion of the bottom plate 312 and the side plate 314 is formed.

In addition, a contact portion 318 protruding toward the guide roller 320 and integrally contacting the guide roller 320 is formed at the center of the side plate 314.

In addition, the bottom chassis 100 is fixed to the guide member 340 for guiding the left and right sliding of the lower plate 330 and preventing upward departure through a plurality of bolts.

That is, since both front and rear ends of the lower plate 330 slide in a partially inserted state below the guide member 340, the upper side deviation of the lower plate 330 to which the guide roller 320 is fixed is suppressed.

At this time, the guide member 340 is preferably injection molded integrally with the rail guide 210. If formed in this way, since it does not need to be provided as a separate individual parts, the overall number of parts can be reduced, thereby simplifying the internal structure and improving the assemblability.

In addition, the installation position of the tension plate 310 and the guide roller 320 is preferably such that the rack gear portion 212 and the second gear 243 is disposed in a position that is symmetrical to the left and right directions to the engaged position.

Accordingly, when the one side surface portion 204a is engaged with and supported by the rack gear portion 212 and the drive gear unit 240 when the slide chassis 200 moves forward and backward, the other side portion 204b may have a horizontal tension adjustment unit 300. Since it is elastically supported through it can effectively absorb the microfluidic acting in the left and right directions.

Meanwhile, as shown in FIG. 3, rail portions 350 protruding a predetermined width toward each outer end of the slide chassis 200 are long in the front-rear direction.

Correspondingly, a rail guide 354 having a rail groove 352 into which each of the rail parts 350 is inserted is provided inside the bent both side wall parts of the bottom chassis 100.

At this time, the rail guide 354 is preferably injection-molded with a plastic material so as to prevent the burrs (burr) generated in the cutting portion due to the conventional press working.

In addition, the rail guide 354 may be formed to be integrated with the rail guide 210 provided on the lower side of the slide chassis 200.

Thus, by forming the material of the rail guide 354 with a plastic material, it is possible to reduce the weight of the product with the slide chassis 200 made of magnesium alloy, the contact between the slide chassis 200 and the rail guide 354 As the burr does not occur in the friction part as in the prior art, a smooth and smooth sliding action is possible.

On the other hand, the leaf spring 360 for imparting an upward elastic force to the slide chassis 200 is fixed to the upper surface of the rail guide 354 located below both side portions 204a and 204b of the slide chassis 200. The leaf spring 360 may be fixed to the bottom surface of the bottom chassis 200 to obtain the same effect as above.

Accordingly, the slide chassis 200 is lifted upward by a predetermined gap through the leaf spring 360 in the advancing and moving process so that the upper surface of the rail unit 350 is always in contact with the upper surface of the rail groove 352. Therefore, the up and down flow of the slide chassis 200 is prevented.

Hereinafter, the operation of the present invention will be described with reference to the accompanying drawings.

First, when a driving signal in the forward / reverse direction is applied from the controller (not shown) to the motor 230, the first gear 241 and the first driven are driven while the worm 232 coupled to the rotation shaft of the motor 230 is rotated. The gear 242, the second gear 243 and the second driven gear 244 are rotated, and the slide chassis 200 slides forward and backward by the rack gear portion 212 engaged with the second gear 243. Will exercise.

In this process, the rail chassis 206 formed on both sides of the bottom surface of the slide chassis 200 is guided by engaging the rail groove 208 of the rail guide 210 fixed to the bottom chassis 100, so that the slide chassis 200 is guided. The smooth sliding action is made and at the same time the flow in the left and right directions is prevented.

In addition, while the side surface portion 204a of the slide chassis 200 is supported by the rack gear portion 212 and the drive gear unit 240, the other side portion 204b of the slide chassis 200 is adjusted horizontally. It is elastically supported by the unit 300.

That is, since the lower plate 330 to which the guide roller 320 is fixed has a structure in which elastic left and right flow is possible by the tension plate 310, the lower plate 330 is fixed in the left and right directions generated during the sliding retreat motion of the slide chassis 200. Microfluidic will also be effectively absorbed through the horizontal tension control unit (300).

In addition, in the above process, the guide member 340 restrains the front and rear ends of the lower plate 330, thereby preventing the upper plate 330 from escaping upward.

In addition, since the upper surface of the embossing 333 and the bottom chassis 100 can continuously maintain the point contact in the lateral sliding process of the lower plate 330, the frictional resistance during sliding can be minimized.

As described above, the AV system of the present invention is not limited to the above-described embodiments, and may be variously modified and implemented within the range permitted by the technical idea of the present invention.

According to the present invention described above, the following effects can be expected.

First, since the side of one side of the slide chassis is supported by the engagement of the drive gear unit of the rack gear part, the other side is kept elastically supported by the horizontal tension adjusting unit, so that the minute The flow in the horizontal direction can be effectively absorbed through the horizontal tension control unit.

Therefore, by absorbing the tolerances generated during the assembly of the individual parts can significantly reduce the load of the drive than the conventional roller guide method, it is possible to further improve the reliability of the product by preventing the driving noise and vibration phenomenon.

Second, by forming a rail portion on the bottom of the slide chassis and installing a rail guide to the bottom chassis in engagement with the bottom chassis, the sliding action is freed by the contact structure of the rail portion and the rail guide during the forward and backward movement of the slide chassis. It is possible to prevent a relatively large flow in the left and right directions.

Third, since the guide roller supported on the lower plate is kept elastically slidably movable in the left and right directions by a tension plate fixed on the bottom chassis, the guide roller is supported by the external force applied in the left and right directions when the slide chassis is moved forward and backward. It can absorb vibrations effectively.

In addition, in the above process, the guide member restrains the front and rear ends of the lower plate, thereby preventing the lower plate from escaping upward.

Fourth, as the embossing is formed on the bottom surface of the lower plate, the frictional resistance during sliding can be minimized because the upper surface of the embossing and the bottom chassis can maintain the point contact in the lateral sliding process of the lower plate.

Fifth, since the guide member is integrally formed with the rail guide, the guide member does not need to be provided as a separate individual component, so that the overall number of components is reduced, thereby simplifying the internal structure and improving the assemblability.

Claims (5)

A bottom chassis disposed at the bottom of the body; A slide chassis slidably installed on the bottom chassis and having a rack gear part formed at one side thereof; A drive gear unit meshed with the rack gear part to move the slide chassis forward and backward; And And a horizontal tension control unit installed in the bottom chassis and elastically supporting the other side portion of the slide chassis. The AV system according to claim 1, further comprising a rail part formed in a sliding direction on bottom surfaces of both side surfaces of the slide chassis, and a rail guide installed in the bottom chassis and guided by engaging the rail part. According to claim 1 or 2, wherein the horizontal tension control unit, A guide roller in contact with the other side of the slide chassis; A tension plate fixed to the bottom chassis such that the guide roller is elastically supported; A lower plate rotatably supported by the guide roller and having a center hole in which the tension plate is accommodated, and sliding in a horizontal direction from an upper portion of the bottom chassis; And And a guide member to which the lower plate is guided. The AV system of claim 3, wherein embossing is formed on a bottom surface of the lower plate. The AV system of claim 3, wherein the guide member is integrally formed with the rail guide.

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