KR100269150B1 - Optical disc drive - Google Patents

Abstract

PURPOSE: An optical disk drive is provided to perform stable drive through overcoming a load by improving structure of a cam lever. CONSTITUTION: A cam lever assembly(30) includes a cam lever(31) having an emergency unit, a ring member(32) assembled to the cam lever, and a spring member(33) inserted to the ring member. Herein, the cam lever includes a boss insertion unit(311) inserted to a hinge shaft(28) at one side of a motor(21), the emergency unit formed at one end portion, and an arm member formed at the other side from the boss insertion unit. Herein, the boss insertion unit is rotationally installed by being inserted to the hinge shaft. Moreover, the emergency unit forms a drawing groove(313) at one end of the cam lever. The arm member includes opening units for inserting the ring member and the spring member. The cam lever is assembled to the hinge shaft. The spring member is inserted to a boss unit(322) of a ring member for being inserted to the arm member of the cam lever. In opening and closing a tray, the cam slider is replaced from a fourth gear(26) for allowing the tray to maintain close and chucking states.

Description

Optical disc drive

The present invention relates to an optical disk drive capable of reproducing various optical disks, and more particularly, to an optical disk drive having an improved cam lever structure.

In general, an optical disk drive is a device for recording / reproducing information of a disk-type recording medium such as CD, CD-R, DVD, DVD-RAM / ROM, and magneto-optical disk. In particular, a DVD-ROM (Digital Versatile Disc-Read Only Memory) is a reproduction-only recording medium (hereinafter referred to as an optical disc) that reproduces a large amount of various recorded information such as audio, video, and data.

In the high-density optical recording / reproducing apparatus, most cartridges are used because recording operations requiring high recording power are much less stable than read operations due to the influence of fingerprints and scratches. Also in a DVD-RAM drive apparatus, a cartridge is used to protect a disk from scratches, fingerprints, and the like and to maintain stability during recording. An optical disc drive capable of playing such an optical disc is provided with an emergency means installed in the cam lever to open the tray when the power is cut off.

1 schematically shows a cam lever employed in an optical disc drive according to the prior art.

Referring to the drawings, an optical disc drive capable of playing an optical disc is provided with a cam lever 10, and the cam lever 10 generally includes a plurality of gear assemblies (not shown). It is installed at a position to drive a tray (not shown). The cam lever 10 has an inlet groove 12 formed at one end portion with respect to the boss portion 11 serving as a predetermined hinge axis, and a first portion between the boss portion 11 and the inlet groove 12. An inclined surface 13 is formed, and a protrusion 14 for pushing and transferring the tray is formed at the other end with the boss 11 as a center, and the second inclined surface 15 extending with the protrusion 14. This is done including.

The inlet groove 12 formed in the cam lever 10 configured as described above is an emergency means for opening the tray when the power is cut off, and a predetermined opening is formed. If the optical disc drive is cut off and the optical disc drive cannot be opened or closed, the boss 12 is pushed by a push pin 16 corresponding to the inlet 12, so that the boss When the cam lever 10 rotates about the part 11, the protrusion 14 pushes the tray, and the cam lever 10 rotates to open the tray.

However, the first and second inclined surfaces 13 and 15 of the cam lever 10 have a problem in that a load is generated by sliding the tray while sliding with the deck.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide an optical disk drive that can withstand loads and can be mechanically stable driven.

1 is a schematic perspective view of a cam lever employed in an optical disk drive according to the prior art;

2 is a perspective view schematically showing the configuration of a cam lever and peripheral components employed in the optical disk drive according to the present invention.

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

10. Main chassis 20. Gear assembly

21. Motor 22. Motor Gear

23. First Gear 24. Second Gear

25. Third Gear 26. Fourth Gear

27. Cam Slider 28. Hinge Shaft

30. Cam lever assembly 31. Cam lever

32. Ring member 33. Spring member

271. Gear teeth 272. First boss member

273. Second boss member 274. Long hole part

311. Boss insert 312. Arm member

313. Inlet groove 321. Head

322. Boss

An optical disk drive of the present invention for achieving the above object, the frame; A cam slider slidably engaged with one gear provided in the gear assembly rotatably installed in the frame; And a cam lever assembly coupled to the cam slider, the cam lever assembly being adapted to be maintained in a state when the tray on which the optical disk, on which the predetermined information is stored, is placed, is closed and chucked.

In the present invention, the cam lever assembly comprises: a cam lever coupled to a hinge shaft protruding on one side of the frame where the gear assembly is installed; A ring member formed to be assembled to the cam lever; And a spring member fitted to the ring member and assembled to the cam lever together with the ring member.

In the present invention, the cam lever is a boss insertion portion formed to be fitted to the hinge shaft; An emergency means provided on one side of the boss insertion unit; It is preferable to include; arm member formed on the other side with respect to the boss insertion portion.

In the present invention, the emergency means includes a predetermined inlet groove formed in one end of the cam lever, the arm member is a predetermined that the ring member and the spring member can be inserted into the other side of the cam lever An opening in the ring member, the head portion being coupled to the cam slider; It is preferred that the head portion is provided with a boss portion coupled to the spring member.

In the present invention, the head portion preferably includes a predetermined insertion hole to be coupled to the boss member protruding from one side of the cam slider.

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

Fig. 2 shows a schematic perspective view of the configuration of the cam lever and the peripheral components employed in the optical disk drive according to the present invention.

Referring to the drawings, an optical disc drive includes a main chassis 10 serving as a frame so that components installed in the optical disc drive can be installed mechanically and stably, and one side of the main chassis 10. A plurality of boss members (not shown) formed to protrude from each other are installed and rotatably installed on the boss members, respectively, and are coupled to one side of the gear assembly 20 and a gear assembly 20 having a driving unit. Cam lever assembly 30 is installed so as to include each.

The driving unit is a motor 21 for generating a driving force to the gear assembly 20 and having a predetermined rotating shaft. The gear assembly 20 includes a motor part gear 22 rotatably installed on a rotation shaft of the motor 21, a first gear 23 rotatably engaged with the motor part gear 22, and the A second gear 24, a third gear 25, and a fourth gear 26 meshed with the first gear 23 and installed so as to rotate while receiving rotational force continuously from the motor gear 22; The cam slider 27 is engaged with the fourth gear 26 and slidably installed with the fourth gear 26.

The cam slider 27 is provided on one side of the main chassis 10, and is formed with a gear tooth 271 that is engaged with the fourth gear 26 so as to slide left and right, and the cam lever assembly 30. Long hole hole 274 which is assembled with the first boss member 272 to be assembled, the second boss member 273 to which the tray guide (not shown) is assembled, and the components of the tray side (not shown) to be slidable. ), Respectively.

The cam lever assembly 30 includes a cam lever 31 provided with an emergency means, a ring member 32 formed to be assembled to the cam lever 31, and the ring member 32. It comprises a spring member 33.

The cam lever 31 has a boss insertion portion 311 formed to be fitted to a hinge shaft 28 provided at one side of the motor 21, and is formed at one end of the boss insertion portion 311. And an arm member 312 formed on the other side about the boss inserting portion 311. The boss insertion portion 311 has a predetermined opening is formed to be inserted into the hinge shaft 28 so as to be rotatable, the emergency means is formed with a predetermined groove formed at one end of the cam lever 31 The drawing groove 313 is formed. In addition, a predetermined opening is formed in the arm member 312, and the ring member 32 and the spring member 33 are inserted into the opening.

The ring member 32 includes a head portion 321 having a predetermined insertion hole formed therein so as to be inserted into the first boss member 272 of the cam slider 27, and the head portion 321. It is installed and comprises a boss 322 so that the spring member 33 is inserted into an elastic bias. Thus, the cam lever 31 is inserted into the hinge shaft 28, the ring member 32 is inserted into the cam lever 31 is coupled to the first boss member 272 of the cam slider 27. .

The optical disk drive according to the present invention including the configuration as described above operates as follows.

If the optical disc drive is cut off and the optical disc drive cannot be opened or closed, the hinge may be pushed into the inlet groove 313 by a push pin 16 (see FIG. 1) corresponding to the inlet groove 313. The cam lever 31 rotates about the shaft 28 to open the tray.

In addition, the gear teeth 271 of the cam slider 27 and the fourth gear 26 are engaged with each other to be driven left and right while being separated from the fourth gear 26 and are bited off. Drive up and down. For example, when the cam slider 27 is driven in the left direction, the tray is opened while being separated from the fourth gear 26. When the cam slider 27 is driven in the right direction, the cam slider 27 is engaged with the fourth gear 26 and is in a chucking state with the lower part of the tray, and the ring member 32 is closed while the tray is closed. ) Is driven toward the second boss member 273 and is engaged with the fourth gear 26.

Then, the ring member 32 is assembled to the first boss member 272, the cam lever 31 is assembled to the hinge shaft 28, wherein the spring member 33 of the ring member 32 It is fitted to the boss portion 322 and the whole is inserted into the arm member 312 of the cam lever 31. This spring member 33 serves to maintain the state when the tray is closed and chucked while the cam slider 27 is separated from the fourth gear 26 when the tray is opened and closed.

The optical disk drive according to the present invention as described above has the following effects.

By coupling the ring member and the spring member to the cam lever, the tray maintains the state of closing and chucking when the tray is opened and closed, and plays a mechanically stable role in the optical disk drive. It also has a seam emergency function.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments thereof are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (7)

A frame; A cam slider slidably engaged with one gear provided in the gear assembly rotatably installed in the frame; And a cam lever assembly coupled to the cam slider, the cam lever assembly allowing the tray on which the optical disk on which the predetermined information is stored is held to be in a closed and chucked state. The method of claim 1, wherein the cam lever assembly, A cam lever coupled to a hinge shaft protruding from one side of the frame in which the gear assembly is installed; A ring member formed to be assembled to the cam lever; And a spring member fitted to the ring member and assembled to the cam lever together with the ring member. The method of claim 2, wherein the cam lever, A boss insertion portion formed to be fitted to the hinge shaft; An emergency means provided on one side of the boss insertion unit; And an arm member formed on the other side with respect to the boss insertion portion. The method of claim 3, The emergency means includes an inlet groove formed in one end of the cam lever. The method of claim 3, And the arm member includes a predetermined opening through which the ring member and the spring member can be inserted into the other side of the cam lever. The method of claim 2, wherein the ring member, A head portion coupled to the cam slider; And a boss part provided at the head part to which the spring member is coupled. The method of claim 6, The head portion, the optical disk drive, characterized in that it comprises a predetermined insertion hole to be coupled to the boss member protruding on one side of the cam slider.

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