JP3498110B2 - Leaf spring for holding disc in magazine for disc player - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magazine loaded in a disk reproducing apparatus, and more particularly to a leaf spring for holding a disk loaded in the magazine. 2. Description of the Related Art In recent years, a disk-shaped recording medium (referred to as a disk in the present invention) in which audio or video information is recorded as a digital signal instead of a conventional record disc in which audio information is recorded as an analog signal is mainly used. And the demand is remarkable. [0003] There is known a disc reproducing apparatus which is a device for reproducing the recorded information of the disc, which has a function of selecting and reproducing one disc from a plurality of set discs. For example, there is known an apparatus in which a magazine containing a plurality of discs is loaded into a disc reproducing apparatus, and one selected disc is taken out of the magazine and reproduced. Conventionally, a magazine having a structure as shown in FIGS. 8 and 9 has been put to practical use. FIG.
As shown in FIG. 1, this conventional magazine m has an opening 1 at one end.
The case 1 is provided with a plurality of shelves t,... partitioned by a plurality of partition plates 2,. As shown in FIG. 9, a fixed portion 5a fixed to the inner wall surface 1b and a fixed portion 5a fixed to the inner wall surface 1b of the case 1 orthogonal to the opening 1a.
protruding portion 5b formed by warping one end of a toward the other end
Is fixedly provided. The leaf spring 5 can hold the disc D loaded in each of the shelves t,... From the opening 1a. In FIG. 9, reference numeral 3 denotes a lever, and 4 denotes a push rod. The push rod 4 is operated by a drive section of the main body of the disc reproducing apparatus, and the lever 3 is swung by the push rod 4. At this time, the end surface of the disk D is pushed by the tip of the lever 3, and the pushed disk D is sandwiched between the rubber rollers adjacent to the opening 1a and is sent out of the magazine m. However, according to the above-mentioned conventional magazine, when a disc is loaded into the magazine or when the disc is sent out from the magazine, a leaf spring comes into contact with the end face of the disc with a very large contact. Because they come into contact with force and their contact area is very large (see FIG. 10),
There is a problem that the end surface of the disk is shaved by the leaf spring to generate dust. In particular, the dust adheres to the surface of the disk, that is, the signal surface, and may adversely affect sound quality such as sound skipping. Further, dust adhering to the surface of the disk also adheres to the rubber roller at the time of loading or sending out the disk, thereby reducing the viscosity of the rubber roller.
There was a risk of malfunctioning when loading or sending a disc. According to the present invention, in order to attain the above object, a plurality of shelves partitioned by a plurality of partition plates are provided inside a case having one side open, A leaf spring having a fixed portion fixed to the inner wall surface and a protruding portion formed by bending one end of the fixed portion toward the other end side is fixedly provided on an inner wall surface of the case orthogonal to the opening. A disc reproducing apparatus magazine in which a disc loaded in each shelf is held from the opening by the leaf spring, and a tip side of a protruding portion of the leaf spring faces outward. It is a further object of the present invention to provide a leaf spring for holding a disc in a magazine for a disc reproducing apparatus, which is bent so that the tip end of the projection and the end face of the disc come into contact with each other when loading and sending the disc. According to the present invention, when the reproduced disk is returned to the predetermined shelf of the magazine, the disk is loaded while the end face of the disk contacts only the tip of the protrusion of the leaf spring. . In particular, at this time, the protruding portion of the leaf spring bends with an extremely small acting force as compared with a case where a force acts on the base end side from a mechanical point of view, so that the reaction force acting on the disk is considerably reduced. Therefore, the frictional force between the disc and the leaf spring is very small, and the disc is prevented from being scraped by the leaf spring. On the other hand, when the disc is sent out from the magazine, only the tip of the leaf spring contacts the end face of the disc with a very small force, and both frictional forces are in a very small state. Therefore, the generation of dust due to the shaving of the disc is eliminated, and the sound quality is poor due to the dust adhering to the signal surface of the disc, and the malfunction during loading or sending due to the adhering to the loading rubber roller, respectively. Will be resolved. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a disk reproducing apparatus, in which P indicates an apparatus main body, and M indicates a magazine. This disc reproducing apparatus is a so-called CD player, and particularly shows a car-mounted CD player. As shown in FIG.
A magazine M containing a plurality of discs can be loaded into the loading port H. The apparatus main body P has a built-in drive unit U that can move up and down. Then, when a predetermined disk is selected, the drive unit U moves to a predetermined position, pushes out the selected disk from the magazine M, inserts it with rubber rollers r, r, pulls it in, and reproduces it. I have. FIG. 2 is a perspective view of the magazine M.
In the figure, reference numeral 10 denotes a case. The case 10 is made of a resin having a rectangular shape, and one side surface thereof is opened to form an opening 12. Inside the case 10, a plurality of partition plates 20,
Are provided, and a plurality of shelves T,... Are provided, and a disk is stored in each of the shelves T,. A push rod 40 is provided slidably on one side of each shelf T, and a lever is provided at the tip of each push rod 40. Are swingably provided. Then, a predetermined push rod 40 is pushed in by a movable member (not shown) provided in the drive unit, and at this time, the lever 30 is operated by the push rod 40. It will be pushed out. FIG. 3 shows the internal structure of the magazine M. In the figure, D is a disk such as a compact disk, and music information and the like are recorded as digital signals on the surface thereof. As clearly shown in this figure, a lens f is mounted on a side surface 10a orthogonal to the opening 12 of the case 10, and the magazine M is loaded in the disk reproducing apparatus. The presence or absence of the disk D at T can be confirmed. In particular, a leaf spring 50 is provided on the inside of the side surface 10a, that is, on the inner wall surface 10a '.
Are fixed, and the disk D loaded in each shelf T is held by the leaf spring 50. On the other hand, the push rod 40 is
It is provided slidably inside the side surface 10b opposite to a. The lever 30 is rotatably supported by a support shaft 14 erected at a corner of the case 10. On the other hand, the partition plate 20 includes a lever 30 and a leaf spring 5.
.. Are flat plates with a portion notched at 0 and a part of the opening 12 side cut away, and ribs 21a, 21b,... . The ribs 21a, 21b,... Are inclined so as to gradually increase from the base end e toward the distal end e '. In particular, the ribs 21a, 21b,.
From the rib 21a on the opening 12 side to the rib 21 on the back side
b, 21c, 21d. Therefore,
When the disk D is loaded into the magazine M or when the disk D is sent out from the magazine M, only the peripheral edge of the disk D comes into sliding contact with each of the ribs 21a, 21b,.
Therefore, scratches on the back surface of the disk D are prevented. FIG. 4 is a plan view of the leaf spring, and FIG. 5 is a side view of the leaf spring. The leaf spring 50 is formed by molding spring steel into a predetermined shape, and has a form having a fixed portion 51 and a protruding portion 52. The fixing portion 51 has a linear shape and is fixed in a state of being in close contact with the inner wall surface 10a 'of the case 10 (see FIG. 3). The protruding portion 52 is formed by bending one end of the fixed portion 51 toward the other end at a predetermined angle,
The fixing portion 51 fixed to the inner wall surface 10a 'has a certain elasticity. In particular, as shown in FIG.
5 is bent at a predetermined angle to the opposite side of FIG.
As shown in the figure, the fixing portion 51 is branched in a multi-branched manner so as to be positioned on each shelf T. Since the leaf spring 50 has the form in which the tip 52a of the protruding portion 52 is bent outward, when the disc D is loaded into the magazine M as shown in FIG. Is the protruding portion 5 of the leaf spring 50
Since only the front end 52a comes into contact with the second end 52a, the contact area of both ends is very small, and the acting force on the front end 52a of the projection 52 is reduced by the distance from the fulcrum, that is, the base end 52b of the projection 52. Therefore, the reaction force received by the disc D from the leaf spring 50 is also considerably reduced, so that the friction between the disc D and the leaf spring 50 is reduced, and
Is almost eliminated from the disk D. As can be seen from FIG. 7, when a load test was carried out when the disc was loaded using the conventional leaf spring and the present leaf spring, the conventional product had a peak of 100 as indicated by the two-dot chain line.
On the other hand, according to the leaf spring of the present invention shown by the solid line, the peak is about 50 g, and it can be seen that the disc can be loaded with a load about half that of the conventional product. This means that the friction between the leaf spring and the disk is small, and therefore, the abrasion of the disk can be reduced. In particular, no dust (polycarbonate) was observed on the signal surface of the disk after repeated loading several thousand times, which was thought to be due to the abrasion of the disk. In FIG. 7, the state where the displacement amount is 0 mm is a state where the disk is completely loaded in the magazine. According to the above embodiment, the disc reproducing apparatus is a CD player. However, the disc reproducing apparatus may be a disc reproducing apparatus such as an LD (laser disc) on which video information is recorded. Although the magazine having six shelves is illustrated as a magazine, the number of shelves is not limited, and the protruding portions of the leaf springs may be provided corresponding to the number of shelves. On the other hand, the leaf spring has a plurality of protruding portions branched from the fixed portion, but the protruding portion is formed independently for one fixed portion, and it is fixed to each shelf. You may. Although the leaf spring is provided on one side of the case, that is, on the inner wall surface 10a ', a similar leaf spring may be fixed on the opposing wall surface to hold the disk at two points. . According to the present invention, in the leaf spring of a magazine for a disk reproducing apparatus, the distal end of the protruding portion is bent outward so that a disk can be loaded into the magazine or can be loaded from the magazine. When the disc is sent out, the end face of the disc can be brought into contact only with the tip of the protruding portion of the leaf spring, so that the contact area between the disc and the leaf spring can be reduced, and the contact force of the leaf spring on the disc can be reduced. Can be very small. Therefore, generation of dust due to scraping of the disk end surface and peeling of the deposited film is prevented, sound quality defects such as sound jumps due to the influence of the dust are eliminated, and the dust adheres to the loading rubber roller. Thus, an effect of eliminating a malfunction at the time of loading and sending a disc due to the above is achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing a disk reproducing apparatus. FIG. 2 is a perspective view of a magazine loaded in the disk reproducing apparatus. FIG. 3 is a plan view showing an internal structure of the magazine. 4 is a plan view of a leaf spring provided in the magazine. FIG. 5 is a side view of the leaf spring. FIG. 6 is a schematic plan view showing a state in which a disk is loaded in a magazine provided with the leaf spring. FIG. 8 is a graph showing a result of a disk loading load test on a magazine performed using the same leaf spring and a conventional leaf spring. FIG. 8 is a front view showing the conventional magazine. FIG. 9 is a plan view showing the internal structure of the conventional magazine. 10 is a schematic plan view showing a state where a disk is loaded in a conventional magazine. [Description of References] M Magazine T Shelf D Disk 10 Case 10a 'Inner wall surface 12 Opening 20 Partition plate 30 Lever 40 Push rod 5 Leaf spring 51 fixed portion 52 protruding portion 52a tip 52b proximal

────────────────────────────────────────────────── ─── Continuing on the front page (73) Patent holder 000001889 Sanyo Electric Co., Ltd. 2-5-1-5, Keihanhondori, Moriguchi-shi, Osaka (74) One of the above agents 100111383 Patent Attorney Masamasa Shibano (72) Invention Person: Tomoaki Yoshida 1-1-1, Sakata, Oizumi-cho, Euraku-gun, Gunma Pref. Inside MMS Audio Sendiri Bahd (72) Inventor Susumu Shinryu 1-1-1, Sakata, Oizumi-cho, Ouraku-gun, Gunma F・ MS Audio Sendilian Bahd (56) References JP-A-63-56861 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16B 2/24 G11B 17 /twenty two

Claims (1)

(57) [Claim 1] A plurality of shelves partitioned by a plurality of partition plates are provided inside a case with one side open, and a case orthogonal to the opening is provided. On the inner wall surface, a leaf spring having a fixing portion fixed to the inner wall surface and a protruding portion formed by curving one end of the fixing portion toward the other end side is fixedly provided. What is claimed is: 1. A magazine for a disc reproducing apparatus, wherein a disc loaded on each shelf is held from an opening, wherein a tip end of a protruding portion of the leaf spring is bent outward, and Loading,
A leaf spring for holding a disc in a magazine for a disc reproducing apparatus, wherein a tip of a protruding portion and an end face of a disc are brought into contact with each other at the time of sending.