KR19980017831A - Disc loading device for compact disc player - Google Patents

Abstract

The present invention relates to a disc loading device of a compact disc player, and more particularly, to a compact disc player for a vehicle manufactured mainly for vibration and shock, while simultaneously inducing and seating a disc entering an inlet onto a turntable. A disc loading apparatus of a compact disc player capable of preventing damage to a disc during unloading, comprising: a main chassis 100 to which a loading motor 102 is fixed; Rotating plate 110 is fixed to one side and coupled to the main chassis 100 to pivot the other side; A roller 170 fixed to the rotational end of the rotation plate and rotating by receiving the power of the loading motor 102 by the gear group 160 fixed to the rotation plate; It is arranged in a vertical shape on the side end of the main chassis 100, the moving plate 120 to move forward and backward, selectively interlocking with the loading motor 102 and to rotate the rotating plate 110; A chucking bracket 150 traversing the upper portion of the main chassis 100 and having both ends fixed to the main chassis 100 and having a chucking holder 152 at the center thereof; Floating plate 130 that moves up and down in accordance with the forward and backward movement of the moving plate 120; The disk loading device is elastically supported with respect to the floating plate 130 by the elastic support means, and made of an elastic plate 140 to rotatably support the turntable.

Description

Disc loading device for compact disc player

The present invention relates to a disc loading device of a compact disc player, and more particularly, to a compact disc player for a vehicle manufactured mainly for vibration and shock, while simultaneously inducing and seating a disc entering an inlet onto a turntable. The present invention relates to a disc loading device of a compact disc player that can prevent damage to a disc during unloading.

In general, a compact disc player mounts a disc on which a sound or video signal is recorded on a turntable, and rotates the disc using a spindle motor provided on the bottom of the turntable to rotate the turntable. A compact disc player is a playback device that allows a user to listen to or watch audio and video by reproducing a signal recorded on a disc by an optical pickup device that linearly reciprocates along a predetermined path in a main chassis. Because it reads in a contactless manner, very good sound can be obtained. In recent years, compact disc players for automobiles have been developed that can be installed in automobiles and listen to high-quality vehicles.

Compact disc players used in automobiles must be able to withstand vibration and shocks and be able to read signals on the discs smoothly, since they are mounted on moving vehicles. In some cases, the road surface may be uneven, so the vibrations and shocks transmitted to the vehicle are very large. Therefore, such vibrations or shocks are transmitted to the compact disc player requiring a very high degree, thereby deteriorating the reproduction performance or worsening the possibility of failure.

Therefore, conventional compact disc players applied to automobiles have a floating plate spring-loaded with respect to the main chassis, and various devices such as a turntable, an optical pickup device and corresponding driving means are installed on the floating plate to adapt to vibration and shock. It is supposed to be.

1 to 3, a configuration of a conventional compact disc player for a vehicle will be described. First, a loading motor 2 fixed to the main chassis 1 to perform loading of a disc is provided. One side is rotatably coupled to the hinge (4) to the main chassis (1) and the other side is provided with an operating pin (7) inserted into the roller groove (6) of the moving plate (5) driven by the loading motor (2) Rotating plate 3 is provided. The pivoting plate 3 is provided on both sides of the main chassis 1 and at least one of the pivoting plates 3 is configured to interlock with the moving plate 5.

The moving plate 5 is selectively supplied with power from the loading motor 2 by a switching device such as a solenoid belt, for example, and the rotating plate 3 moves the operating pin 7 in response to the movement of the moving plate 5. And by the interference of the roller groove (6) to achieve a pivoting movement relative to the hinge (4).

One of the rotating plate 3 is rotatably fixed to the gear group 8 to receive the power from the loading motor 2 to decelerate to a constant speed, the end of the gear group is rotated at both ends It is connected to the roller 9 which is rotatably fixed to the rotational end of the plate 3 and is configured to rotate the roller 9 by the rotation of the loading motor 2. The roller 9 is configured in the form of a django which gradually decreases in diameter from both ends to the center in order to guide the disk D to the center.

In addition, the upper portion of the main chassis 1 is provided with a floating plate 11 which is supported by a spring 10 on the main chassis 1. The spindle motor 13 for rotating the turntable 12 is fixed to the center lower portion of the floating plate 11, and the feeding motor 15 is fixed to the side end thereof, and is floated by the feeding motor 15. An optical pickup device 14 which moves along the guide groove of the plate 11 and reads out a signal from the disk D seated on the turntable is provided.

The optical pick-up apparatus includes an objective lens on top of which irradiates a laser generated from a pickup to a disk and simultaneously focuses laser light reflected from the disk to a required focus.

In addition, a top plate 16 is provided at an upper portion of the main chassis 1, and a guide plate 17 is fixed to the bottom of the top plate 16 to guide the entry and discharge of the disc when the disc is loaded.

The floating plate 11 has a fixing pin 11a interfering with the moving plate 5 to be fixed or released relative to the main chassis 1, and is released by the spring 10 to release the main chassis 1. It is configured to maintain the suspended form for). In addition, a plurality of damping rubber 19 is installed on the floating plate 11, the main chassis 1 is provided with a damping protrusion 20 coupled with each of the damping rubber 19, the spring 10 in the suspended state Shock absorber by damping rubber and damping rubber 19 are added so that the floating plate 11 can retain the required resistance against vibration impact of the vehicle body.

In addition, as shown in FIG. 2, the rear end of the main chassis is provided with a chucking plate 21 that rotates according to the movement of the moving plate 5 and supports a disk seated on the turntable 12. The chucking plate 21 has a hinge 22 rotatably coupled to the main chassis 1 at its rear end, and a chucking pin 23 interlocked with the moving plate 5 is formed at the side end thereof. The chucking pin 23 is mounted on the inclined guide portion 24 formed at the rear end of the moving plate 6, and the chucking plate 21 is supported by the spring 25 on the main chassis 1 to always keep downward force. The chucking plate 21 is provided to provide a rotational force about the hinge 22 as the moving plate 5 moves.

On the other hand, the moving plate 5 is arranged in a vertical form on one side of the main chassis 1 as shown in FIG. 3 and configured to selectively couple with the gear group 26 that receives the power of the loading motor 2. The last gear of the gear group 26 (hereinafter referred to as the switching gear 27) is fixed on the rotary lever 29 that is rotationally driven by the solenoid (28) is in accordance with the operation of the solenoid (28) It is to be moved by receiving power from the loading motor (2) to move forward with respect to the main chassis (1) when loading the disk, and to move backwards when unloading and to support the roller (9), respectively ( 3) and the chucking plate 21.

The side of the moving plate 5 is provided with a plurality of guide pins 5a guided to the guide groove 1a on the main chassis 1 and fixed to restrain or release the fixing pins 11a of the floating plate 11. The groove 5b is formed.

In addition, between the main chassis 1 and the moving plate 5, one side is rotatably coupled to the main chassis 1, the pin 30a, the other side is inserted into the cam groove 5c of the moving plate 5 to rotate An actuating protrusion 30b is provided with a fixed plate 30. The fixing plate 30 has a fixing groove 30c formed at the center thereof to release the fixing pin of one of the fixing pins 11a of the floating plate 11.

Looking at the operation of a conventional compact disc player having such a configuration, when the disc is inserted, the disc entry detection means (not shown) detects this to drive the loading motor 2, and according to the driving of the loading motor 2 The roller 9 is rotated. Therefore, the disk located between the roller 9 and the guide plate 17 is slipped with respect to the guide plate 17 by the pressing force and rotational force of the roller 9 and is inserted into the turntable 12 to form a loading. .

Subsequently, when the disk D enters the predetermined depth, the solenoid 28 operates to rotate the switching lever 29 so that the switching gear 27 meshes with the rack gear 30 of the moving plate 5. The moving plate 5 starts moving forward.

When the moving plate 5 starts moving forward, the chucking plate 21 interlocked with the moving plate 5 descends to perform a chucking operation.

Further, the advancement of the moving plate 5 causes the rotation of the rotating plate 3 supporting the roller 9 so that the roller 9 is spaced apart from the bottom of the disk D.

At the same time, the forward of the moving plate 5 rotates the fixed plate 30 and releases the fixing pin 11a of the floating plate 11 which is being fixed since the fixing groove 5b is separated from the operating pin 11a. Thus, the floating plate 11 is suspended by the spring 10 and the damping rubber 19 to complete the disk loading.

When the loading is completed as described above, the feeding motor 15 is driven to move the optical pickup device 14 linearly toward or away from the turntable 12, and at the same time, irradiate the laser to the bottom of the disk and reflect the reflected light. Video or audio signals are reproduced by the wavelength.

In addition, during unloading, the loading motor 2 is driven in the opposite direction so that the moving plate 5 moves in the reverse direction (backward) and returns the respective operating members to their original positions. That is, by restraining the fixing pin 11a so that the floating plate 11 does not flow with respect to the main chassis 1, the chucking plate 21 is raised to release the chucking state, and at the same time, the rotating plate 3 is raised. The roller 9 is brought into contact with the bottom surface of the disk so that the disk moves forward to perform unloading.

However, in the compact disc player having such a configuration, the disc loading device has a problem in that the loading operation is unstable as well as damage to the disc.

In detail, that is, when the disk enters, it must be seated on the turntable exactly, which requires the disk to enter the center part correctly. Conventionally, for this purpose, the roller 9 is configured in a django shape so that two points of the peripheral edge of the disc come into contact with the roller 9, and the disc is guided to the center part by the rotation of the roller 9.

Therefore, at the time when the entry of the disc is completed, a part of the rear end of the disc is located between the lorler 9 and the guide plate 17, so as shown in FIG. Since only the end of the disk is deflected due to its own weight as shown in FIG. 2, the center of the disk D is not accurately seated on the turntable, and thus the loading operation becomes unstable. This situation was accompanied by the problem that the recording surface requiring a very high degree of damage interferes with the turntable and other peripheral devices.

In addition, in the case of a large disk, the above problem is further exacerbated. For example, as shown in FIG. 1, two types of discs have recently been developed, 8 cm discs and 12 cm discs. Since compact disc players are designed to be compatible with both types of discs, 8 cm discs have been developed. In this case, since the size is small, there is a problem in that it cannot be inserted correctly at the center of the loading, and thus the loading operation becomes unstable due to the eccentric entry of the disk.

In particular, the above problem is that the disk is moved from the turntable 12 due to the rise of the roller 9 during unloading, so that the disk is moved by the roller in the state that the disk is not completely removed, and thus the interference between the disk and the turntable is caused. As a result, scratches and the like occur on the recording surface of the disc, which reduces the subsequent playback performance and severely renders the disc unusable, which further increases the risk of disc damage.

Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a loading device of a compact disc player capable of preventing a disc from being damaged during loading and unloading while performing a stable loading operation of the disc. .

1 is a plan view schematically showing the configuration of a conventional compact disc player disc loading apparatus;

2 is a cross-sectional view taken along the line A-A of FIG. 1 showing the structure of a conventional compact disc player disc loading apparatus.

Figure 3 is a side view showing the configuration of a conventional compact disc player disk loading apparatus

Figure 4 is a plan view showing the configuration of a preferred embodiment of a compact disc player disk loading apparatus according to the present invention

5 is a cross-sectional view taken along the line A-A of FIG. 4 showing the configuration of a preferred embodiment of the compact disc player disk loading apparatus according to the present invention.

Figure 6 is an operating state showing the moving plate moving state of the compact disc player loading apparatus according to the present invention forward

Explanation of symbols on the main parts of the drawings

100: main chassis 102: loading motor

104: vertical guide groove 110: rotating plate

120: moving plate 122: roller groove

124: cam groove 126: rack gear

130: floating plate 132: lifting pin

140: elastic plate 141: damping protrusion

142: turntable 144: spindle motor

144: optical pickup device 146: feeding motor

150: chucking bracket 152: chucking holder

170: roller 180: damping rubber

190: spring 200: top plate

An object of the present invention and the main chassis is fixed to the loading motor; A rotating plate coupled to the main chassis so that one side is fixed and the other side pivots; A roller fixed to the rotating end of the rotating plate and rotating by receiving the power of the loading motor by a gear group fixed to the rotating plate; A moving plate arranged vertically at the side end of the main chassis, the moving plate being selectively interlocked with the loading motor and moving back and forth to pivot the rotating plate; A chucking bracket traversing the upper portion of the main chassis, each end of which is fixed to the main chassis and having a chucking holder at the center thereof; Floating plate which moves up and down according to the forward and backward movement of the moving plate; It can be achieved by a disk loading device made of an elastic plate which is elastically supported with respect to the floating plate by elastic support means and rotatably supports the turntable.

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

Figure 4 shows the configuration of a preferred embodiment of the disk loading apparatus of the compact disc player according to the present invention, which is provided with a loading motor 102 is fixed on the main chassis 100 to perform the loading of the disk .

And one side is rotatably coupled to the hinge 112 to the front end of the main chassis 100 and the other side is operated pin 114 is inserted into the roller groove 122 of the moving plate 120 driven by the loading motor 102. There is provided a rotating plate 110 is provided. Rotating plate 110 is provided on both sides of the main chassis 100, at least one is configured to interlock with the moving plate 120.

The moving plate 120 is selectively supplied with power from the loading motor 102 by a switching device such as a solenoid belt, for example, and the rotating plate 110 actuates the moving pins 114 according to the movement of the moving plate 120. By the interference of the roller groove 122 and the rotational movement is achieved based on the hinge 112 of the main chassis 100.

The rotation group 110 connected to the moving plate 120 is rotatably fixed to the gear group 160 which receives power from the loading motor 102 and decelerates to a constant speed, and is in the last gear of the gear group. Both ends are connected to the roller 170 rotatably fixed to the rotating end of each rotating plate 110 is configured to rotate the roller 170 by the rotation of the loading motor (102). The roller 170 is configured in the form of a django which gradually decreases in diameter from both ends to the center in order to guide the disc to the center.

In addition, the floating plate 130 having lifting pins 132 movably inserted into the vertical guide grooves 104 formed in the main chassis 100 through the cam grooves 124 formed on the moving plate 120 on both sides. ) Is provided. The cam groove 124 of the moving plate 120 through which the lifting pin 132 penetrates is inclined so that the floating plate 130 moves up and down as the moving plate 120 moves. At this time, in order to maintain the horizontal state of the lifting pin 132, at least two locations on each side of the floating plate 130 should be formed.

And the upper portion of the floating plate 130 is provided with an elastic plate 140 having a predetermined interval with the floating plate 130. The spindle motor 144 for rotating and driving the turntable 142 is fixed to the center lower portion of the elastic plate 140, and the feeding motor 102 is fixed to the side end thereof, and the elastic plate is fixed by the feeding motor 102. An optical pickup device 146 that moves along the guide groove of 140 and reads out a signal from the disk D seated on the turntable is provided.

The optical pick-up apparatus includes an objective lens on top of which irradiates a laser generated from a pickup to a disk and simultaneously focuses laser light reflected from the disk to a required focus.

In addition, as shown in FIG. 5, a plurality of damping rubbers 180 are installed on the floating plate 130, and a damping protrusion coupled to the respective damping rubbers 180 in a vertical direction under the elastic plate 140. 141 is provided, and a spring 190 is provided between the floating plate 130 and the elastic plate 140 to hold the elastic plate 140 away from the floating plate 130. The spring 190 is preferably installed at the periphery of each damping rubber 180, the elastic plate 140 in at least three places for stable support of the elastic plate 140, that is to maintain the horizontal state Must support Therefore, in suspension, cushioning by the spring 190 and damping by the damping rubber 180 are added, so that the floating plate 130 can retain the required resistance against vibration shock of the vehicle body.

In addition, a top plate 200 is provided at an upper portion of the main chassis 100, and a guide plate 210 is fixed to the bottom of the top plate 200 to guide the entry and discharge of the disc when the disc is loaded.

The main chassis 100 has a chucking bracket 150 installed across the top of the turntable 142 and fixed at both ends to the main chassis 100. In other words, the chucking holder 152 is rotatably installed at the center of the chucking bracket 150.

On the other hand, the moving plate 120 is arranged in a vertical form on one side of the main chassis 100, as shown in Figure 6 is configured to selectively couple with the gear group 220 that receives the power of the loading motor 102 Of these gear groups 220, the last gear (hereinafter referred to as the switching gear 222) is fixed on the rotary lever 226 is driven by the solenoid 224 is the loading according to the operation of the solenoid 224 It moves by receiving power from the motor 102 and is engaged with the rack gear 126 formed on the moving plate 120. When the disc is loaded, the moving plate 120 is moved forward with respect to the main chassis 100. It is configured to move rearward when unloading. Therefore, the moving plate 120 moves back and forth and interlocks with the rotating plate 110 supporting the roller 170 and the floating plate 130 performing chucking.

The operation of the compact disc player loading apparatus according to the present invention having such a configuration will be described. When the disk is inserted, the disk entry detecting means (not shown) detects this to drive the loading motor 102, and the roller 170 rotates according to the driving of the loading motor 102. Therefore, the disk located between the roller 170 and the guide plate 210 is slipped with respect to the guide plate 210 by the pressing force and rotational force of the roller 170 and is inserted into the turntable 142 to form a loading. .

Subsequently, when the disk D finishes entering a predetermined depth, the solenoid 224 operates to rotate the switching lever 226 so that the switching gear 222 engages with the rack gear 126 of the moving plate 120. The moving plate 120 starts to move forward.

When the moving plate 120 starts moving forward, the floating plate 130 interlocked with the moving plate 120 is lifted to perform a chucking operation.

In addition, the advancing of the moving plate 120 causes the rotation of the rotating plate 110 supporting the roller 170 so that the roller 170 is spaced apart from the bottom of the disk (D).

When the rising of the floating plate 130 reaches a certain height, the upper surface of the elastic plate 140 is in close contact with the bottom of the disk (D), and in this state, the floating plate 130 is more raised, and thus the spring ( At the same time as the 190 and the elastic rubber 180 is compressed, the elastic plate 140 presses the disk against the chucking holder 152. In this case, since the spring 190 and the elastic rubber 180 provide a force directed upward to the elastic plate 140 by the elastic restoring force, the disk D receives a predetermined pressing force and completes the disk loading.

When the loading is completed as described above, the feeding motor 102 is driven to linearly move the optical pickup device 146 toward or near the turntable 142 while simultaneously irradiating a laser onto the bottom of the disk and reflecting the light. Video or audio signals are reproduced by the wavelength.

When the vibration or shock is applied to the main chassis in the above state, the vibration and shock is absorbed and buffered in the spring 190 and the elastic rubber 180 provided between the disk and the floating plate 130, so the regeneration of the disk Will not affect.

As described above, the disc loading apparatus of the compact disc player according to the present invention allows the floating plate to be selectively restrained or released on the main chassis by the moving plate, and is elastically supported by the floating plate by springs and elastic rubbers. Equipped with an elastic plate, the floating plate rises due to the movement of the moving plate, and the disk waiting to enter the upper portion of the elastic plate by the elastic force of the spring and elastic rubber is pressed against the chucking holder of the chucking bracket to perform chucking. In addition to simplifying the process, damage to the recording surface due to interference between the disc and the turntable can be prevented, and a stable loading operation can be achieved.

Claims (7)

A main chassis 100 to which the loading motor 102 is fixed; Rotating plate 110 is fixed to one side and coupled to the main chassis 100 to pivot the other side; A roller 170 fixed to the rotational end of the rotation plate and rotating by receiving the power of the loading motor 102 by the gear group 160 fixed to the rotation plate; It is arranged in a vertical shape on the side end of the main chassis 100, the moving plate 120 to move forward and backward, selectively interlocking with the loading motor 102 and to rotate the rotating plate 110; A chucking bracket 150 traversing the upper portion of the main chassis 100 and having both ends fixed to the main chassis 100 and having a chucking holder 152 at the center thereof; Floating plate 130 that moves up and down in accordance with the forward and backward movement of the moving plate 120; A disk loading device comprising an elastic plate (140) which is elastically supported with respect to the floating plate (130) by elastic support means and rotatably supports the turntable. According to claim 1, Lift pins 132 protruding on both sides of the floating plate 130, A cam groove 124 formed on the moving plate 120 to allow the lifting pins 132 to penetrate and to raise or lower the vertical phase of the lifting pins during movement; It is formed on the main chassis 100 is characterized in that the floating plate 130 is moved up and down in accordance with the movement of the moving plate 120 by the vertical guide groove 104 to support the lifting pin 132 to move up and down Disc loading device of a compact disc player. The compact as claimed in claim 2, wherein the lifting pins 132, the cam grooves 124, and the vertical guide grooves 104 are formed on at least two sides on each side in order to maintain the horizontal state of the floating plate 130. Disc loading device of the disc player. The method of claim 1, wherein the elastic support means Damping the horizontal flow of the plurality of damping rubber 180 provided on the upper surface of the floating plate 130 and the elastic plate 140 protruding downward from the bottom of the elastic plate 140 is coupled to the damping rubber 180 Supporting damping protrusion 141, Loading device for a compact disc player, characterized in that composed of a spring 190 provided between the floating plate 130 and the elastic plate 140 to elastically support the two members in the direction away. 5. The loading apparatus of a compact disc player according to claim 4, wherein the spring (190) is installed at the periphery of each damping rubber (180). The method according to claim 4 or 5, The damping rubber (180) and the spring (190) is a loading device of a compact disc player, characterized in that arranged at least three places for stable support of the elastic plate (140). According to claim 1, The elastic plate 140 is a signal from the spindle motor 144 for rotationally driving the turntable 142 and the disk (D) which is moved along the guide groove of the elastic plate 140 and seated on the turntable Loading device for a compact disc player, characterized in that the optical pickup device for reading the (146), and the feeding motor 102 for driving the optical pickup device is fixed.