KR0168577B1 - Mini-disk player for use in an automobile - Google Patents

Abstract

The present invention discloses a mini disc player for a vehicle.

The present invention has a housing, a space provided in the housing, a space for positioning the compact disc is formed, the forward position in the state that is moved to the inlet side, which is a passage for inserting or ejecting the compact disc to the maximum direction and the opposite direction A main chassis provided in the housing so as to be movable between the retracted positions and the turntable in which the compact disc is seated on one side thereof; A transfer screw rotatably driven by a transfer motor provided on one side of the main chassis and having a screw section and a non-screw section in a predetermined range, and a pinion fixed to one end thereof; A pickup base supported on the main chassis so as to be transported in the radial direction of the seated compact disc and having a through groove formed with a screw section screwed to the conveying screw; A moving plate installed on an upper portion of the main chassis so as to move together with the tray; Power conversion means for transferring the tray to the retracted position or the forward position by a predetermined distance by using the movement of the pickup base by rotation of the transfer screw; A rack member installed on a lower surface of the tray and engaged with the pinion so as to be engaged with the pinion when a predetermined distance of the tray by the power conversion means is finished; In conjunction with the transfer of the tray to the forward or retracted position, the pickup base is moved to the left and right to intercept the power transmission between the pickup base and the transfer screw and start and complete the transfer to the forward position of the tray. It includes the sensing means for detecting the start and completion of the transfer to the retreat position, there is an advantage that can be reduced in cost and product weight because the drive motor and a plurality of gears for transferring a separate tray is unnecessary.

Description

Car Mini Disc Player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mini disk player for a vehicle, and more particularly, to a mini disk player for a vehicle that enables two transfers of a pickup base and a tray as one driving motor.

In general, a mini disc player, which is one of optical disc players, has been widely used in recent years due to its compactness and ease of portability, as well as high density recording and reproduction, compared to a tape recorder.

Such a mini disc player is applied as a component of an audio system or provided as a portable disc player.

1 shows a side view of a typical vehicle mini disc player.

The turntable (not shown) on which the optical disk conveyed by the tray 2 is seated is provided in the center surface of the main chassis 1, and the tray 2 is formed with guide grooves 1a in the conveying direction on both sides thereof. do.

In addition, the upper surface of the main chassis 1 substantially moves the tray 2 by sliding, and a moving plate 3 is located. The moving plate 3 has two upper and lower sides of the tray 2. From the guide pin (2a) formed to extend through the guide groove (1a) of the main chassis (1) is coupled to the side portion.

On the other hand, as a power source for operating the moving plate (3), one side lower surface of the main chassis (1) is fixed to the transfer motor (M), the transfer motor (M) is provided with a worm (4). In addition, a gear group 5 having a plurality of gears G1, G2, and G3 coupled to the warworm 4 is rotatably supported on the side of the main chassis 1, and corresponds to the final gear G3. On the lower surface of the moving plate 3, which is engaged with the gear G3, a rack member 6 for sliding the moving plate 3 in the transfer direction of the tray 2 is fixedly installed.

However, such a conventional mini-disc player must not only have a separate motor for transporting the tray, but also have a large number of gears and rack members, which leads to an increase in the cost of the product and a reduction in weight of the product. It has been a deterrent and has many problems, such as causing a decrease in assembly productivity.

The present invention has been made to solve such a conventional problem, and provides a mini disc player that can reduce the unit cost, lighten the product, and improve assembly productivity by eliminating the need for a separate motor for transporting the tray. There is a purpose.

In order to achieve the above object, the present invention includes a housing; Installed in the housing, a space for positioning the compact disc is formed, and the maximum position in the forward position and vice versa, the state is moved to the inlet side, which is a passage for inserting or ejecting the compact disc; A main chassis disposed in the housing so as to be movable between the retracted positions, and a turn table on which one side of the compact disc is seated; A transfer screw rotatably driven by a transfer motor provided on one side of the main chassis and having a screw section and a non-screw section in a predetermined range, and a pinion fixed to one end thereof; A pickup base supported on the main chassis so as to be transported in the radial direction of the seated compact disc and having a through groove formed with a screw section screwed to the conveying screw; A moving plate installed on an upper portion of the main chassis so as to move together with the tray; Power conversion means for transferring the tray to the retracted position or the forward position by a predetermined distance by using the movement of the pickup base by rotation of the transfer screw; A rack member installed on a lower surface of the tray and engaged with the pinion so as to be engaged with the pinion when a predetermined distance of the tray by the power conversion means is finished; In conjunction with the transfer of the tray to the forward or retracted position, the pickup base is moved to the left and right to intercept the power transmission between the pickup base and the transfer screw and start and complete the transfer to the forward position of the tray. It provides a mini disc player comprising a sensing means for detecting the start and completion of the transfer to the retracted position.

1 is an axial view of a conventional mini disc player.

2 is a plan view conceptually showing a state in which the tray is in the retracted position in the mini disc player of the present invention.

3 to 5 are plan views showing step-by-step advances of the tray toward the inlet side in the mini disc player of FIG. 2, with the moving plate indicated by a dashed line.

6 is a plan view of a tray used in the present invention.

* Explanation of symbols for main parts of the drawings

10: main chassis 30: feed screw

31, 41a: Screw section 32: No thread section

40: Pickup base 41: Through groove

50: moving plate 60: power conversion means

61: Extension part 61a: Gear part

62: second gear 63: second gear

64: pinion 65: rack member

70: sensing means 71: guide post

72: limit switch 73: guide rail

73a: Opening 73b, 73d, 73f, 73h: 1st, 2nd, 3rd, 4th guide section

73c.73e, 73g: 1st, 2nd, 3rd slope

Such a characteristic configuration and the effects thereof according to the present invention will become more apparent from the detailed description of the invention with reference to the accompanying drawings.

2 to 5 are plan views conceptually showing the operating state of the present invention.

As shown in FIG. 2, the mini disc player according to the present invention includes a housing (not shown) and a tray 20. As shown in FIG. 6, the tray 20 is located in the housing and can support a mini disk (not shown) and has a forward position that is moved to the inlet 80 side for inserting and ejecting the disk. (See FIG. 5) It is provided so that a movement is possible between retreat positions (refer FIG. 2) which are the state which moved to the maximum in the opposite direction. The housing also has a main chassis 10 having a moving plate 50 adapted to move together while supporting the tray 20 on both sides, and a turntable 11 on which the disks carried by the tray 20 are seated; , The transfer screw 30 rotated by the transfer motor M located inside the main chassis 10 and the main screw 10 so as to be movable left and right, and one end thereof is transferred to the transfer screw 30. The pickup base 40, the power conversion means 60, and the sensing means 70 are coupled to each other.

The feed screw 30 rotated by the feed motor M is divided into a screw section 31 and a non-screw section 32 which are in a predetermined range.

On the other hand, the screw of the transfer screw 30 in the pickup base 40, one end of which is coupled to the transfer screw 30, and installed to be transported in the radial direction of the seated disk (not shown), that is, in the left and right directions of the drawing. When combined with the section 31 is formed a through groove 41 including a screw section (41a) to allow the pickup base 40 itself to be transferred by the rotation of the transfer screw 30.

As shown in FIG. 4, the power conversion means 60 moves the tray 20 to the forward or retracted position by using the pick-up base 40 to be moved from side to side by the rotational force of the transfer screw 30. It is for making the primary move by a predetermined distance. The power change means 60 is an extension plate 61 formed at one end of the pickup base 40 and provided with a rack gear portion 61a, and the first gear 62 installed to be engaged with the rack gear portion 61a. And a second gear 63 provided on the main chassis 10 in engagement with the first gear 62. The second gear 63 is a first gear portion 63a meshed with the first gear 62 and a second gear portion 63b having a relatively larger module than the first gear portion 63a. Is done. When the first gear 62 is rotated, this rotational movement causes the disk 20 (not shown) mounted on the tray 20 to be spaced apart or in contact with the magnet by moving the tray 20 up and down through a predetermined connecting means. Can be.

At one end of the transfer screw 30, that is, the position opposite to the transfer motor M, the pinion 64 rotated together by the rotation of the transfer screw 30 is fixedly installed.

A rack member 65 is provided on a lower surface of the tray 20, and a first rack gear engaged with the second gear portion 63b of the second gear 63 is provided on one side of the rack member 65. 65a) is formed, and a second rack gear 65b, which is selectively engaged with the pinion 64 of the transfer screw 30, is formed on the bottom surface thereof.

Meanwhile, the sensing means 70 allows the pickup base 40 to be transferred in the left and right directions within a predetermined range, and the pickup base 40 is left in accordance with the transfer to the forward or retracted position of the tray 20. In order to be in the designated position on the right side, the power between the transfer screw 30 and the pickup base 40 is interrupted. In addition, the sensing means 70 functions to inform the start and completion of the movement to the forward position or the completion of the movement of the tray 20 to the retracted position. The sensing means 70 having such a function is fixedly picked up on the guide post 71 protruding from one side of the pickup base 40 and the main chassis 10 adjacent to the guess surface of the pickup base 40. Limit switch 72 which selectively contacts the base 40 and detects the start and completion of movement of the tray 920 to the battery position or the start and completion of movement to the retreat back, and an extension formed on the bottom surface of the tray 20. And a guide rail 73 for guiding the guide posts 71.

The guide rail 73 has a large number of sections, and an opening 73a is formed at the foremost part thereof, and the thread portions 31 and 41a between the pick-up base 40 and the transfer screw 30 are formed from the opening 73a. A first guide section 73b is formed to be combined. In particular, the first guide section 73b is a position where the tray 20 is moved to the forward position to some extent in the state where regeneration is completed, and the transfer screw 30 and the pickup base are positioned at the end of the first guide section 73b. (40) The coupling between the screw portions 31 and 41a between the ends is completed.

In addition, the first inclination section 73c inclined to the right side extends from the first guide section 73b. When the tray 20 is conveyed to a forward position to some extent so that the guide post 71 meets the first inclined section 73c, the engagement of the screw portions 31 and 41a between the transfer screw 30 and the pickup base 40 is released. As a result, the pick-up base 40 is not transferred by the transfer screw 30. In addition, when the tray 20 is moving to the forward position by the first inclination section 73c, the pickup base 40 comes into contact with the limit switch 72 to inform the start of the movement to the forward position. When the tray 20 is moving to the retracted position, the pickup base 40 is separated from the limit switch 72.

In the first slope section 73c, the coupling between the screw portions 31 and 41a between the transfer screw 30 and the pick-up base 40 begins to break, and in the second guide section 73d, the feed screw 30 and the pick-up base (40) The engagement of the screw parts 31 and 41a between mutually cut | disconnected completely. After the second guide section 73d, a second slope section 73e inclined in a direction opposite to the first slope section 73c is formed. At this time, the pick-up base 40 is separated from the limit switch 72 when the tray 20 is moving to the forward position by the second inclination section 73e, and the pick-up when the tray 20 is moving to the retracted position. The base 40 comes into contact with the limit switch 72 to inform the completion point of movement to the retracted position.

From the second inclined section 73e, a third guide section 73f is formed, which continues while the coupling between the screw portions 31 and 41a between the transfer screw 30 and the pickup base 40 is broken. Further, after the third guide section 73f, the third inclined section 73g extends in the same inclination direction as the first inclined section 73c, so that the pickup base when the tray 20 is moving to the forward position. 40 is in contact with the limit switch 72 to indicate the completion of the movement to the forward position, the pickup base 40 is separated from the limit switch 72 when the tray 920 is moving to the retracted position The starting point to the retracted position is indicated.

At the end, the fourth guide section 73h extends from the third slope section 73g.

If described in detail the operating state of the optical disc player for a vehicle according to the present invention configured as described above.

First, as shown in FIG. 2, when the pickup base 40 presses the switch for ejecting the disk while the pickup base 40 completes the reproduction from the optical disk seated on the main chassis 10, the transfer screw 30 Since the screw section 931 of the pick-up base 40 and the screw section 41a of the through groove 41 of the pick-up base 40 are engaged, the pick-up base 40 is rotated by the rotation of the feed screw 30 by the drive motor M. It is transferred to the right direction of the drawing. At this time, the rack gear portion 61a of the extension plate 61 of the pickup base 40 drives the first gear 62 rotatably supported on the main chassis 10 in a rotational manner. When the first gear 62 is rotated, the second gear 63 meshed with the first gear 62 is rotated. At the same time, the second gear part 63b of the second gear 63 is rotated. By driving the first rack gear 65a of the rack member 65 formed on the lower surface of the tray 20, the tray 20 is first conveyed to the forward position while being coupled with the moving plate 50.

When the moving plate 50 and the tray 20 are transferred to the front of the main chassis 10, the second rack gear 65b formed at the lower portion of the rack member 65 provided on the lower surface of the tray 20 is transferred to the screw. By engaging the pinion 64 which is fixed and installed at the end of the 30, the moving plate 50 and the tray 20 start to move by the direct rotational force of the transfer screw 30. As shown in FIG. At the same time, the gear base 61a and the first gear 62 of the left extension plate 61 are extended on one side of the pickup base 40, which is used as a driving source for initially transferring the moving plate 50 and the tray 20. This engagement between) is released.

On the other hand, during the above-described process, the pick-up base 40 is continuously transferred to the right side of the main chassis 10 while being screwed with the transfer screw 30, and also the guide post 71 protruding from the upper surface The first guide section 73b of the guide rail 73 passes.

In this state, the moving plate 50 and the tray 20 are moved to the front of the main chassis 10 to some extent so that the guide post 71 is positioned on the first inclined section 73c of the guide rail 73. The pickup base 40 is transferred to the right side of the main chassis 10, and power transmission between the transfer screw 30 and the pickup base 40 is cut off. Therefore, the pick-up base 40 is no longer transported to the right side of the main chassis 10, and only the moving plate 50 and the tray 20 are moved to the forward position by only the pinion 64. At this time, the pick-up base 40 is in contact with the limit switch 72 fixedly installed on one side of the main chassis 10 to sense that the start point of the movement of the tray 20 to the forward position. On the other hand, such contact means a time when the movement to the retracted position is completed when the tray 20 moves to the retracted position. As the tray 20 is transported further toward the forward position, the pickup base 40 contacts the limit switch 72 while the guide post 71 passes through the second guide section 73d, as shown in FIG. Keep it.

When transported along the guide post 71 and the second inclined section 73e, the pickup base 40 is separated from the limit switch 72 to maintain the separated state until the third guide section 73f. When the tray 20 is further moved toward the forward position, and the guide post 71 passes the third inclination section 73g and passes the fourth guide section 73h as shown in FIG. 5, the pickup base ( 40 is separated from the limit switch 72, the end of the movement of the tray 20 to the forward position.

When it is positioned in the fourth guide section 73h after passing through the third slope section 73g having the same inclination direction as the first slope section 73c, the pickup base 40 is moved to the right again to limit switch 72. It comes in contact again with, and it detects the opening time of tray. As described above, according to the optical disc player for a vehicle according to the present invention, the tray is opened and closed by the power from the transfer motor for transferring the pick-up base, so that the drive motor and a plurality of drive motors for transferring the separate trays are provided. This eliminates the need for gears, resulting in cost savings and reduced product weight. In addition, by accurately determining the opening time and completion time of the tray, the drive of the motor can be performed, and the transfer of the stable tray can be achieved, thereby improving the reliability of the product.

Claims (3)

A housing; Installed in the housing, a space for positioning the compact disc is formed, and the maximum position in the opposite direction to the forward position in the state of maximum movement toward the inlet 80, which is a passage for inserting or ejecting the compact disc; A main chassis 10 disposed movably between the retracted positions in the moved state, the main chassis 10 disposed in the housing, and having a turn table 11 on one side thereof on which the compact disc is seated; It is rotated and driven by a feed motor (M) provided on one side of the main chassis 10, and has a screw section 31 and a threadless section 32 of a predetermined range, and a pinion 64 fixed to one end thereof. A transfer screw 30; Pick-up base having a through groove 41 which is supported on the main chassis 10 so as to be transported in the radial direction of the seated contact disk, and has a threaded section 41a which is screwed with the conveying screw 30. 40); A moving plate 50 installed on an upper portion of the main chassis 10 to move together with the tray 20; Power change means (60) for transferring the tray 920 to the retracted position or the advanced position by using the movement of the pickup base 40 by the rotation of the transfer screw 30; It is installed on the lower surface of the tray 20 to be engaged with the pinion 64 when the transfer of the predetermined distance of the tray 20 by the power conversion means 60 is completed and is engaged with the pinion 64. A rack member 65 including a second rack gear 65b; In connection with the transfer to the forward or retracted position of the tray 20, the pickup base 40 is moved to the left and right to intercept the power transmission between the pickup base 40 and the transfer screw 30, And a sensing means (70) for detecting a transfer start and completion time to the forward position of the tray 20 or a transfer start and completion time to a retracted position. According to claim 1, wherein the power conversion means 60 is formed extending from one side of the pickup base 40 coupled with the transfer screw 30, the rack gear portion (61a) is provided at the end of the extension Plate 61; A first gear (62) axially supported on the main chassis (910) to be selectively engaged with and rotated with the rack gear (61a) of the extension plate (61); A first gear portion 63a which is axially supported on the main chassis 10 adjacent to the first gear 62 and engaged with the first gear 62, and on the first gear portion 63a. A second gear 63 having a second gear portion 63b having a relatively large module; And a first rack gear (65a) formed on a side surface of the rack member (65) and engaged with a second gear portion (63b) of the second gear (63). According to claim 1, wherein the sensing means 70, The guide post 71 is formed protruding on the upper surface of the pickup base 40 adjacent to the portion fastened to the transfer screw 30; A limit switch 72 fixedly installed on the deck chassis 10 corresponding to the right side of the pickup base 40; It is formed on the lower surface of the tray 20 to guide the guide post 71 of the pickup base 40 to guide the pickup base 40 to the left and right, the maximum forward direction of the tray 20 An opening 73a formed at the end and formed adjacent to the retracting direction side of the tray 20 with respect to the opening 73a, and two screw portions 31 and 41a of the pick-up base 40 and the feed screw 30. A first guide section 73b which maintains a state in which it is coupled, and is formed adjacent to the retracting direction side of the tray 20 with respect to the first guide section 73b, and the pickup base 40 When the tray 20 is conveyed to the forward position by bringing the pickup base 40 into contact with the limit switch 72 while keeping the coupling between the two threaded portions 31 and 41a of the feed screw 30 disconnected. Informs the start of conveyance, and conveys when the tray 20 is conveyed to the retracted position. The second guide section 73d and the second guide section 73d to notify completion of the second guide section (73d) is formed adjacent to the retraction direction side of the tray 20, the pickup base 40 and the feed screw 30 The third guide section 73f and the third guide section 73f which separate the gap between the pickup base 40 and the limit switch 72 while maintaining the state in which the coupling between the two threaded portions 31 and 41a is broken. Is formed adjacent to the retraction direction side of the tray 20, and the pickup base is maintained while the coupling between the two threaded portions 31, 41a of the pickup base 40 and the transfer screw 30 is broken. 40 to contact the limit switch 72 to inform the completion of the transfer when the tray 20 is transferred to the forward position, and to inform the start of the transfer when the tray 20 is transferred to the retracted position Four guide rails (73h) including a guide rail (73) Car mini disc player included.