KR19990041892A - Dust and Shock Damper for CD Players - Google Patents

Abstract

The present invention is to reduce the number of parts and the assembly process by integrally forming a damper for reducing the vibration transmitted from the outside and the spring for reducing the vibration transmitted from the outside to the deck of the CD player.

In the present invention, the oil 50 is embedded in the chamber 22 formed in the body 12, and the shaft holder 20 into which the fixed shaft 40 is inserted into the center from one side of the body 12 is immersed. In the damper 10 for a player, a plurality of compression springs 30 holding the body 12 and the shaft holder 20 are inserted into the chamber 22, and the vibration transmitted from the outside to the deck is fixed shaft. The shaft holder 20 into which the 40 is inserted vibrates in the oil 50 so that the vibration is rapidly reduced, and the shock transmitted from the outside to the deck is the shaft holder 20 into which the fixed shaft 40 is inserted. It is rapidly reduced by the cushioning action of the compression spring 30. Therefore, the damper 10 can act as a damping and buffering of the vibration.

Description

Dust and Shock Damper for CD Players

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to vibration and damping dampers for CD players, and more particularly, to vibration and damping dampers for CD players having springs inserted therein to reduce shocks in dampers for reducing vibrations transmitted to decks of CD players.

In general, a CD player is an apparatus for reproducing recording of a disc by forming a focus of laser light on a pit recorded on the disc by using an optical pickup actuator, focusing the reflected light into an electric signal.

The optical pickup actuator of such a device can reproduce the recording well only by accurately focusing the laser light on the recording pit of the disc. When the CD player in which the optical pickup actuator is installed is installed in a place where vibration is continuously generated, such as a vehicle, Vibration transmitted to the player makes the focus of the laser light formed on the recording pit of the disc unstable, resulting in a failure or interruption of recording and reproduction. Therefore, damping is required for the CD player for a vehicle to rapidly reduce the transmitted vibration and to increase the recording and reproduction sensitivity.

As shown in FIG. 1, the CD player having the damper for damping includes a tray 132 for seating and rotating the disk and a deck 130 provided with an optical pickup actuator for picking up the recording of the disk. 120). The CD player 110 supports the deck 130 to the chassis 120 with a tension spring 134 to protect the pickup function of the optical pickup actuator from vibrations and shocks transmitted from the chassis 120 to the deck 130. Meanwhile, the fixed shaft 136 is fixed to the chassis 120 or the deck 130 and the damper 140 is fixed to the corresponding deck 130 or the chassis 120 so that the deck 130 is provided to the damper 140. By being supported, the impact transmitted from the chassis 120 is reduced by the tension spring 134 and the vibration is reduced by the damping action of the damper 140.

Damper 140, which serves as described above, is generally used oil damper 140 injecting oil 148 into the body 142, a typical oil damper 140 is shown in FIG.

As shown in FIG. 2 (a), the damper 140 injects the oil 148 into the cylindrical body 142 of which the upper side is sealed, and seals the oil 148 by sealing the lower part with the plate 150. ) Is built in. A shaft holder 144 is formed in the body 142 to be immersed downward from the upper side, and a fixed shaft 136 fixed to the chassis 120 or the deck 130 is inserted to damp the oil 148. To receive, and formed an annular groove 146 on the outer circumferential surface of the body 142 to be inserted into a circular hole formed in the chassis 120 or the deck 130 to be fixed.

Therefore, when the damper 140 is installed in the CD player 110 and actually used, the fixed shaft 136 is fixed to the chassis 120 and the damper 140 is decked as shown in FIG. When fixed to the 130, the fixed shaft 136 is inserted into the shaft holder 144 of the damper 140, the vibration transmitted from the vehicle is transmitted to the chassis 120 of the CD player 110, the fixed shaft 136 ) Will vibrate. At this time, the shaft holder 144 surrounding the outside of the fixed shaft 136 is vibrated in the oil 148, the vibration is attenuated by the damping action of the oil 148.

However, in the conventional CD player as described above, since the damper 140 for reducing vibration transmitted to the deck 130 from the outside and the tension spring 134 for reducing the impact transmitted from the outside are separately installed, the number of parts increases. As a result, the assembly process is complicated and there is a problem that the productivity is lowered.

The present invention has been made in order to improve the conventional problems, the object of the present invention is to form a damper for reducing the vibration transmitted from the outside and a spring for reducing the vibration transmitted from the outside to the deck of the CD player To reduce the number of parts and the assembly process.

1 is a perspective view showing a typical CD player.

2 (a) and 2 (b) are cross-sectional views showing a general CD player damper.

Figure 3 is a perspective view showing a cut in the damper for the CD player according to the present invention.

Figure 4 is a longitudinal sectional view of the damper for the CD player according to the present invention.

<Explanation of symbols for main parts of drawing>

10 damper 12 body

16: groove 18, 24: insertion hole

20: shaft holder 22: chamber

26 plate 30 compression spring

40: fixed shaft 50: oil

The present invention provides a damper for a CD player in which oil is embedded in a chamber formed in a body, and a shaft holder into which a fixed shaft is inserted into the center from one side of the body is immersed. The spring is inserted.

Therefore, the oil stored in the chamber within the body dampens the vibration to reduce the vibration transmitted to the deck of the CD player from the outside, the compression spring is buffered to reduce the impact transmitted to the deck of the CD player from the outside.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the dustproof and buffer damper for a CD player according to the present invention.

As shown in FIG. 3, the damper of the present embodiment is a damper 10 for attenuating vibrations and shocks transmitted from the chassis of the CD player body to the deck, and a chamber formed in the cylindrical body 12 whose upper side is closed. The oil 50 is injected into the 22 and the lower part is sealed with the plate 26 so that the oil 50 is embedded therein.

The shaft holder 20 is formed to be immersed downward from the upper side of the body 12 so that the fixed shaft 40 fixed to the chassis or deck is inserted, and the outer circumferential surface and the body 12 of the shaft holder 20 are inserted. Insertion holes 18 and 24 are respectively formed in the inner circumferential surface of the insert, and both ends of the compression spring 30 are inserted into and fixed to the insertion holes 18 and 24, respectively.

The compression spring 30 serves to mitigate the impact transmitted to the deck from the outside, the oil 50 contained in the chamber 22 serves to attenuate the vibration transmitted to the deck from the outside.

Thus, the damper 10 of the present embodiment can simultaneously perform the vibration damping action by the oil 50 and the buffering action by the compression spring 30, so that the number of parts is reduced compared to the conventional installation of the damper and the tension spring separately. Therefore, the assembly process is reduced.

Meanwhile, an annular groove 16 is formed on the outer circumferential surface of the body 12 to be inserted and fixed in a circular hole formed in the chassis or the deck.

When the damper 10 as described above is installed on the CD player and actually used, when the damper 10 is fixed to the chassis as shown in FIG. 4, the damper 10 is fixed by fixing the fixed shaft 40 to the deck. When the damper 10 is fixed to the deck, the fixed shaft 40 is fixed to the chassis so that the damper 10 is inserted into the shaft holder 20 of the damper 10.

Hereinafter, the operation of the damper as described above will be described.

In the CD player, the chassis of the main body vibrates due to the vibration of the high frequency region generated and transmitted from the engine when the vehicle is driven, and the vehicle body vibrates according to the road surface condition of the road, and the shock is transmitted from the suspension device. The fixed shaft 40 or damper 10 fixed to the vibrates. Since the vibrations and shocks transmitted from the engine and the outside of the vehicle act in the up and down direction, the vibration of the fixed shaft 40 mainly acts in the up and down direction.

The damping action of the damper 10 will now be described, for example, when the fixed shaft 40 is installed in the chassis and the damper 10 is installed on the deck.

When the vibration of the high frequency region generated from the engine of the vehicle body is transmitted to the CD player and the fixed shaft 40 fixed to the chassis vibrates, the shaft holder 20 of the damper 10 into which the fixed shaft 40 is inserted is the body ( It vibrates while contacting the oil 50 injected into the chamber 22 formed in 12). Therefore, the vibration transmitted to the chassis is attenuated by the shaft holder 20 and is not transmitted to the deck or weakly transmitted and quickly disappears.

When the shock generated by the suspension of the vehicle is transmitted to the CD player by the unevenness of the road, the shaft holder 20 in which the fixed shaft 40 is vibrated greatly and the fixed shaft 40 is inserted into the chassis. Receiving a buffer action of the compression spring (30) for holding the body (12).

Therefore, the shock transmitted to the fixed shaft 40 is quickly reduced and transmitted to the deck weakly, the deck is quickly stabilized.

On the other hand, when the fixed shaft 40 is installed on the deck and the damper 10 is installed in the chassis, the damper 10 does not vibrate without the fixed shaft 40 vibrating, and at this time, the damping and buffering of the damper 10 also occurs. The action is the same as when the fixed shaft 40 is installed in the chassis and the damper 10 is installed on the deck.

Therefore, the deck provided with the damper 10 is quickly stabilized by the vibration and shock absorbing and damping action of the damper 10 even if vibration and shock are transmitted from the outside, so that the focus of the laser light on the disk in a stable posture in the optical pickup actuator installed in the deck. Will form.

As described in the above embodiments, in the present invention, the oil 50 is embedded in the chamber 22 formed in the body 12, and the fixed shaft 40 is inserted into the center from one side of the body 12. In the damper 10 for a CD player in which the shaft holder 20 is immersed, a plurality of compression springs 30 holding the body 12 and the shaft holder 20 are inserted into the chamber 22, The vibration transmitted to the deck from the shaft holder 20 is inserted into the fixed shaft 40 is vibrated in the oil 50, the vibration is quickly reduced, the shock transmitted from the outside to the deck is fixed shaft 40 The inserted shaft holder 20 is rapidly reduced by the buffering action of the compression spring 30. Therefore, the damper 10 can act as a damping and buffering effect of the vibration, thereby reducing the number of parts and the assembly process.

Claims (2)

Oil damper 50 is embedded in the chamber 22 formed in the body 12, the shaft damper for the CD player in which the fixed shaft 40 is inserted into the center from one side of the body 12 is immersed In (10), A vibration damper and a damper for the CD player, characterized in that a plurality of compression springs (30) are inserted into the chamber (22) for holding the body (12) and the shaft holder (20). According to claim 1, wherein the inner surface of the body 12 and the outer surface of the shaft holder 20 are formed with insertion holes 18, 24, respectively, characterized in that both ends of the compression spring 30 is inserted Dust and damper dampers for CD players.