A7 43 67 6 8 B7_ 五、發明說明（1 ) 發明背景： 1 .發明領域： 本發明係關於碟匣，可廣泛地應用於資料處理領域， 尤指一種型式的碟匣，包含一碟，可在其上記錄資料.及 一卡匣（外殼），可旋轉地容納資料記錄碟於其中。 2.習知技藝之敘述： 爲了說明本發明之工作，參見圖8至1 0將簡要地敘 述一習知的碟匣，其爲熟知的軟碟匣1 0 1。 由圖8可知，軟碟匣1 0 1通常包含一資料記錄碟 1 0 2，及一矩形的卡匣1 0 3，用於可旋轉地容納記錄 碟1 0 2於其中β矩形的卡匣.1 0 3包括彼此耦合的上與 下半殼。矩形的開口 1 0 3 a與1 0 3 b分別形成於上與 下半殼的對應部份中，經由這些開口資料記錄碟1 0 2的 上與下表面可部份地暴露於外側。快門構件1 0 4被可滑 動地安裝在卡匣1 0 3上，以選擇性地打開及關閉開口 103a與103b。偏壓機構與快門構件1〇4合併， 以在一方向上偏壓快門構件而關閉開口 1 0 3 a與 1 0 3 b。由參考代號E 1與E 2所表示的是細長的軌道 ，界定在卡匣1 0 3的上表面之側面地相對的側面。 由圖9與1 0可看出，在特別的使用中，軟碟匣 1 0 1被滑動進入碟播放器2 0 1，亦即進入安裝在碟播 放器201中的卡匣座202。卡匣座202在其側面設 有各別的推壓構件20 3 a與203b。雖然在，圖形中未 本紙張尺度適用中國S家標準（CNS)A4規格（210 X 297公釐） ---i ϊ Γ I I I I--裝·1!訂-! !線 (請先閱讀背面之注意t項再填窝本頁) 經濟部智慧財產局員工消费合作社印製 -4- 43676 8 經濟部智慧財產局具工消費合作社印製 A7 B7 五、發明說明（2 ) 示’偏壓機構係設在卡匣座2 0 2中，用於向下偏壓推壓 構件203a與203b »於是，當碟匣101被滑動進 入卡匣座2 0 2時，推壓構件2 0 3 a與2 0 3 b被推壓 靠著細長的軌道E 1與E 2，以穩定地將碟匣1 0 1固定 於卡匣座2 0 2中事實上，使用推壓力量，碟匣1 〇 χ 被推壓靠著卡匣座2 0 2的底表面2 0 4 a與2 0 4 b。 然而，由於其在構造之固有的形狀，上述習知的碟匣 101容易具有以下的缺點。 亦即，於碟匣101插入於卡匣座202期間，推壓 構件203 a與20 3b會摩擦地接觸碟匣1 0 1的細長 軌道E 1與E 2，其容易在細長軌道E 1與E 2上產生裂 縫或刮痕，降低碟匣1 0 1的美觀。此外，因推壓構件與 軌道之間的摩擦滑動而產生的細微粒子或摩擦粉末，容易 累積於卡匣座2 0 2中，增加損壞碟播放器2 0 1的可能 發明節要： 所以，本發明之目的在於提供一種碟匣，其可免於上 述缺點。 依據本發明，提供一種碟匣，其包含一資料記錄碟： —矩形卡匣，用於可旋轉地容納資料記錄碟於其中；細長 軌道，形成於矩形卡匣的上表面之側面地相對的側面上， 當碟匣被滑動進入碟播放器中時，各軌道會被一推壓構件 推壓向下：及許多平行的凹槽’形成於細長軌道上。 本紙張尺度適用中國國家標準（CNS)A·!規格（2】0«297公蓳） ---if------裝------晒—訂!!1-線 (請先Μ讀背51之注意^-項再填寫本頁> -5- 436768 A7 _ B7 五、發明說明（3 ) (請先閱讀背面之注意事項再填寫本頁) 使用這些平行的凹槽，可達成碟匣自碟播放器之平滑 的進出移動，而避免在細長軌道上產生不必要的裂縫或刮 痕，其是由於推壓構件與軌道之間摩莩滑動而引起。即使 當因摩擦滑動而產生細微粒子或摩擦粉末時，這些外來粒 子會累積或收集於凹槽中。 圖形之簡要敘述： 連同附圖，從以下的敘述將可明顯地看出本發明之其 它目的及優點，其中： 圖1是本發明之第一實施例的碟匣之平面圖； 圖2是第一實施例之碟匣的前視圖： 圖3是第一實施例之碟匣的後視圖： 圖4是第一實施例之碟匣的底視圖： 圖5是第一實施例之碟匣的放大剖面圖，指出形成在 碟匣之細長軌道上的平行凹槽： 圖6是一類似於圖5之圖形，額外地指出與碟匣的其 中一個細長軌道合倂的推壓構件； 經濟部智慧財產局具工消費合作社印3衣 圖7是一類似於圖1之圖形，指出本發明之第二實施 例： 圖8是習知的碟匣之平面圖： 圖9是具有習知的碟匣固定於其中之碟播放器的前視 圖：且 圖1 0是習知的碟匣實際地固定於安裝在碟播放器中 的卡匣座中之放大剖面圖。 ， 本紙張尺度適用令因國家標準（CNS)A4規格（210x297公釐〉 -6- 4367 6 8 A7 五、發明說明（4 ) 主要元件符號說明： 1 A 碟匣 1 B 碟匣 2 記錄碟 3 矩形卡匣 5 凹槽 2 1 記錄碟有效區 經濟部智慧財產局員工消費合作社印製 2 2 金屬輪軸 3 1 上半殼 3 2 下半殻 3 3 矩形開 □ 3 4 矩形開 □ 3 6 A 第一 定 位 凹 部 3 6 B 第二 定 位 凹 部 3 7 碟型式 鑑 別 凹 部 3 8 碟型式 鑑 別 凹 部 3 9 寫入保 護 器 4 1 彈簧 1 0 1 軟碟 匣 1 0 2 資料 記 錄 碟 1 0 3 矩形卡 匣 1 0 3 a 開 □ 1 0 3 b 開 □ 本紙張尺度適用令國國家標準（CNS)A4規格（210 X 297公；s ) ί請先閱讀背面之注意事項再填寫本頁) 436768 Α7 Β7 經濟部智慧財產局R工消费合作社印製 五、發明說明（5 ) 10 4 快門構件 2 0 1 碟播放器 202 卡匣座 203a 推壓構件 203b 推壓構件 2 0 4 a 底表面 2 0 4 b 底表面 3 0 1 外來粒子 較佳實施例之詳細敘述： 以下將參見附圖而詳細敘述本發明。 參見圖1至4特別是圖1 ，指出本發明之第一實施例 的碟匣1 A。 類似於前述之習知的碟匣1 〇 1，此實施例之碟匣 1 A通常包含一資料記錄碟2，及一矩形卡匣3 ，用於可 旋轉地容納記錄碟2於其中。 記錄碟2包括一記錄碟有效區2 1及一金屬輪軸 22 ’固定至碟有效區21的中央。記錄碟有效區21可 以是720ΚΒ型式、1 . 2ΜΒ型式、1 . 44ΜΒ型 式或超過1 0 0ΜΒ型式。 由圖2與3可以看出，矩形卡匣3包括塑膠做成的上 與下半殼，其被耦合以構成一碟容器，亦即卡匣3。矩形 開口 3 3與3 4分別形成於上與下半殻3 1與3 2的對應 部份中，經此資料記錄碟2的上與下表面可部份地暴露於 本紙張尺度適用中囷國家標準（CNS)A4規格（210 X 297公楚） ----.---I ---I - _ ! ! II I 訂·！ I {請先閱讀背面之注意事項异%寫本頁) -8- 436768 A7 ___B7___ t 五、發明說明（6 ) <請先閱讀背面之注意事項再填寫本頁) 外側。快門構件4係可滑動地安裝在卡匣3上，以選擇性 地打開及關閉開口 3 3與34。彈簧4 1被安裝於卡匣3 中，以在一方向上偏壓快門構件4而關閉開口 3 3與3 4 〇 卡匣3的上半殼3 1係形成在具有細長軌道E 1與 E 2之側面地相對的側面。各細長軌道E 1或E 2具有微 粗的表面。 此外*各軌道E 1或E 2形成有許多沿著軌道延伸的 平行凹槽5。 由圖5可看出，各凹槽5之寬度” W”是在約0 . 1 mm至約0 · 5mm之範圍內，最好是約0 · 2mm。各 凹槽5的深度〃是在約〇 05mm至約0 . 3mm 之範園內，最好是約0.1mm。此外，凹槽5的間距^ P#是在約1mm至約2mm之範圍內，最好是約1 . 2 mm。以下的詳細敘述將指出，平行凹槽5不僅作用來平 滑碟匣1 A進出碟播放器2 0 1的移動，亦可累積或收集 任何外來的粒子》 經濟部智慧財產局員工消費合作社印製A7 43 67 6 8 B7_ V. Description of the invention (1) Background of the invention: 1. Field of the invention: The present invention relates to disc cartridges, which can be widely used in the field of data processing, especially a type of disc cartridge, including a disc, which can Data is recorded thereon, and a cassette (housing) rotatably accommodates a data recording disc therein. 2. Description of Conventional Techniques: In order to illustrate the operation of the present invention, a conventional magazine, which is a well-known flexible magazine 101, will be briefly described with reference to Figs. As can be seen from FIG. 8, the floppy disc cassette 1 0 1 generally includes a data recording disc 102 and a rectangular cassette 103 for rotatably accommodating a recording disc 102 in a β rectangular cassette. 1 0 3 includes upper and lower half shells coupled to each other. Rectangular openings 1 0 3 a and 10 3 b are respectively formed in the corresponding parts of the upper and lower half shells. The upper and lower surfaces of the disc 102 can be partially exposed to the outside through these opening data recording discs. The shutter member 104 is slidably mounted on the cassette 103 to selectively open and close the openings 103a and 103b. The biasing mechanism is merged with the shutter member 104 to close the openings 103a and 103b by biasing the shutter member in one direction. Denoted by reference numbers E1 and E2 are elongated tracks defined on opposite sides of the upper surface of the cassette 103. It can be seen from FIGS. 9 and 10 that, in a particular use, the flexible disk cartridge 101 is slid into the disk player 2 01, that is, into the cartridge holder 202 installed in the disk player 201. The cassette holder 202 is provided with respective pressing members 20 3a and 203b on its side. Although in the figure, the paper size is not applicable to the Chinese Standard (CNS) A4 specification (210 X 297 mm) --- i ϊ Γ III I--installed · 1! Order-!! Line (please read the back first Note the t-item and refill this page) Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -4- 43676 8 Printed by the Consumers’ Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (2) It is provided in the cassette holder 202 for downward biasing the pressing members 203a and 203b. Therefore, when the disc cartridge 101 is slid into the cassette holder 2 02, the pressing members 2 0 3 a and 2 0 3 b is pushed against the slender rails E 1 and E 2 to stably fix the cassette 1 0 1 in the cassette holder 2 02. In fact, using a pushing force, the cassette 1 〇χ is pushed Press against the bottom surfaces 2 0 4 a and 2 4 b of the cassette holder 2 0 2. However, due to its inherent shape in construction, the conventional disc cartridge 101 described above easily has the following disadvantages. That is, during the insertion of the disc cartridge 101 into the cartridge holder 202, the pushing members 203a and 20 3b will frictionally contact the elongated rails E 1 and E 2 of the disc cartridge 1 0 1, which are easily on the elongated rails E 1 and E. Cracks or scratches are generated on 2 to reduce the aesthetic appearance of the disc case 101. In addition, the fine particles or friction powder generated due to the frictional sliding between the pushing member and the track are easily accumulated in the cassette holder 2 02, increasing the possibility of damaging the disc player 2 01. Summary: Therefore, this The object of the invention is to provide a disc cartridge which can avoid the above disadvantages. According to the present invention, a disc cartridge is provided, which includes a data recording disc: a rectangular cassette for rotatably accommodating the data recording disc therein; an elongated track formed on the side opposite to the upper surface of the rectangular cassette Above, when the disc cartridge is slid into the disc player, each track is pushed down by a pushing member: and a plurality of parallel grooves are formed on the elongated track. This paper size is applicable to Chinese National Standard (CNS) A ·! Specifications (2) 0 «297 Gong ----- if ------ installation ------ sun-order !! 1-line (please First read the note of back 51 ^ -item and then fill out this page> -5- 436768 A7 _ B7 5. Description of the invention (3) (Please read the notes on the back before filling this page) Use these parallel grooves, It can achieve smooth in and out movement of the disc cartridge from the disc player, and avoid unnecessary cracks or scratches on the slender track, which is caused by friction sliding between the pushing member and the track. Even when sliding due to friction When producing fine particles or friction powder, these foreign particles will accumulate or collect in the groove. Brief description of the figure: Together with the drawings, other objects and advantages of the present invention will be apparent from the following description, among which: Fig. 1 is a plan view of a disc cartridge according to the first embodiment of the present invention; Fig. 2 is a front view of the disc cartridge according to the first embodiment: Fig. 3 is a rear view of the disc cartridge according to the first embodiment: Fig. 4 is a first embodiment Bottom view of the magazine of the example: FIG. 5 is an enlarged sectional view of the magazine of the first embodiment, indicating that the Parallel grooves on the slender track: Figure 6 is a figure similar to Figure 5, additionally indicating the pressing member that fits into one of the slender tracks of the disc box; Figure 3 printed by the Consumer Goods Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 7 is a figure similar to FIG. 1, indicating a second embodiment of the present invention: FIG. 8 is a plan view of a conventional disc cartridge: FIG. 9 is a front view of a disc player with a conventional disc cartridge fixed therein: And Fig. 10 is an enlarged cross-sectional view of a conventional disc cartridge actually fixed in a cassette holder installed in a disc player. The paper size is applicable due to the national standard (CNS) A4 specification (210x297 mm>- 6- 4367 6 8 A7 V. Description of the invention (4) Symbol description of main components: 1 A disc cartridge 1 B disc cartridge 2 recording disc 3 rectangular cassette 5 groove 2 1 recording disc effective zone Intellectual Property Bureau, Ministry of Economic Affairs, Employee Consumption Cooperative Printed 2 2 Metal wheel shaft 3 1 Upper half shell 3 2 Lower half shell 3 3 Rectangular opening □ 3 4 Rectangular opening □ 3 6 A First positioning recess 3 6 B Second positioning recess 3 7 Disc type identification recess 3 8 Disc type Identification concave 3 9 Write protector 4 1 Spring 1 0 1 Floppy cassette 1 0 2 Data recording disc 1 0 3 Rectangular cassette 1 0 3 a Open □ 1 0 3 b Open □ This paper size applies the national standard (CNS) A4 specifications (210 X 297 male; s) ί Please read the precautions on the back before filling out this page) 436768 Α7 Β7 Printed by the R Industrial Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (5) 10 4 Shutter member 2 0 1 Disc player 202 Cassette holder 203a Pushing member 203b Pushing member 2 0 4 a Bottom surface 2 0 4 b Bottom surface 3 0 1 A detailed description of a preferred embodiment of a foreign particle: The following describes the present in detail with reference to the drawings invention. Referring to Figs. 1 to 4 and particularly Fig. 1, a disc cartridge 1 A according to a first embodiment of the present invention is pointed out. Similar to the conventional disc cartridge 101 described above, the disc cartridge 1 A of this embodiment generally includes a data recording disc 2 and a rectangular cassette 3 for rotatably accommodating the recording disc 2 therein. The recording disc 2 includes a recording disc effective area 21 and a metal wheel shaft 22 'fixed to the center of the disc effective area 21. The recording disc effective area 21 may be a 720KB type, a 1.2MB type, a 1.44MB type, or a more than 100MB type. As can be seen from Figs. 2 and 3, the rectangular cassette 3 includes upper and lower half shells made of plastic, which are coupled to form a dish container, that is, the cassette 3. Rectangular openings 3 3 and 3 4 are formed in the corresponding parts of the upper and lower half shells 3 1 and 3 2 respectively. According to this data, the upper and lower surfaces of the disc 2 can be partially exposed to this paper. Standard (CNS) A4 specification (210 X 297 cm) ----.--- I --- I-_!! II I Order ·! I {Please read the notes on the back of the page%) -8- 436768 A7 ___B7___ t 5. Description of the invention (6) < Please read the notes on the back before filling this page) outside. The shutter member 4 is slidably mounted on the cassette 3 to selectively open and close the openings 3 3 and 34. The spring 41 is installed in the cassette 3 to close the opening 3 3 and 3 4 by biasing the shutter member 4 in one direction. The upper half shell 3 1 of the cassette 3 is formed between the elongated rails E 1 and E 2. Side to side. Each of the elongated tracks E 1 or E 2 has a slightly roughened surface. In addition, each track E 1 or E 2 is formed with a plurality of parallel grooves 5 extending along the track. It can be seen from FIG. 5 that the width “W” of each groove 5 is in a range of about 0.1 mm to about 0.5 mm, and preferably about 0.2 mm. The depth 〃 of each groove 5 is within a range of about 0.05 mm to about 0.3 mm, and preferably about 0.1 mm. In addition, the pitch ^ P # of the grooves 5 is in a range of about 1 mm to about 2 mm, and preferably about 1.2 mm. The following detailed description will point out that the parallel groove 5 not only acts to smooth the movement of the disc cartridge 1 A into and out of the disc player 2 01, but also accumulates or collects any foreign particles. ”Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs
由圖4可看出，卡匣3的下半殼3 2在細長軌道E 1 的背側設有一第一定位凹部3 6 A及一寫入保護器3 9， 且在細長軌道E 2的背側設有一第二定位凹部3 6 B及兩 倜碟型式鑑別凹部3 7與3 8。當碟匣1 A被滑入碟播放 器時，第一及第二定位凹部3 6 A與3 6 B係用來定位碟 匣1 A。寫入保護器3 9係用來避免所謂錯誤重寫（或錯 誤消除）。碟型式鑑別凹部3.7與3 8係用來當，碟匣1 A 本纸張尺度適用中0园家標4 (CNS)A4規格<210 X 297公釐〉 • 9 - 4367 6 8 Ar B7 五、發明說明（7 ) --'讀先間讀背面之汰意事項再填寫本頁) 被滑入碟播放器時，提供關於碟匣1 A中的記錄碟2之型 式的碟播放資訊。在所示的實施例中，凹部3 7是用來提 供關於較高的儲存容量之碟2的資訊/而另一凹部3 8是 用來提供關於較低的儲存容量之資訊。 快門構件4包含可滑動地置於上半殼31上的上肓板 、可滑動地置於下半殻3 2下方的下肓板、及一橋板，經 此橋板可使上與下肓板連接在一起。這些上與下肓板之尺 寸做成可充分地覆蓋對應的矩形開口 3 3或3 4，使得當 快門構件4處於關閉位置時，卡匣3的矩形開口 3 3與 3 4分別被育板完全關閉。由於彈簧4 1的作用，快門構 件4被偏壓以取關閉位置。 以下藉助於指出習知的碟播放器2 0 1之圖9，將敘 述操作。碟播放器2 0 1具有卡匣座202安裝於其中。 經濟部智慧財產局員工消費合作社印製 當碟匣1 A被滑入碟播放器2 0 1的卡匣座2 0 2， 推壓構件2 0 3 a與2 0 3 b接觸並推壓碟匣1A的細長 軌道E 1與E 2。亦即直到當碟匣1 A來到碟播放器 20 1中的播放位置，推壓構件203 a及2 0 3b與細 長軌道E 1及E 2之間的摩擦接觸才會繼續。 現在須注意由於在細長軌道E 1與E 2上設有平行凹 槽5，可減小推壓構件與軌道之間的摩擦阻力，導致碟匣 .1 A在碟播放器2 0 1中的平滑移動，且可避免在細長軌 道E 1與E 2上產生不要的裂縫或刮痕β此外，由圖6可 看出|即使當產生細微粒子或摩擦粉末，這些外來粒子 3 0 1被累積或收集於凹槽5中，其可保護碟播敢器 本纸張尺度通甲中0國家標单（CNSM4規格（210 * 297公釐） -10- 436768 A7 B7 五、發明說明（8 ) 2 0 1免於這些外來粒子3 0 1。 參見圖7，指出一碟匣1B ·其爲本發明之第二實施 (請先Μ讀背面之注意事項再填寫本頁) 例。 由於此實施例的碟匣1B類似於第一實施例的上述碟 匣1 A，以下將只敘述與第一實施例1 A不同的部份。 經濟部智慧財產局員工消費合作社印製 亦即，在此第二實施例中*許多傾斜平行的短凹槽 5 >被形成在各細長軌道E 1或E 2上，取代第一實施例 1 A所使用的細長凹槽5。如圖所示*各短凹槽5 #相對 於碟匣1B的縱軸，亦即碟匣1B的滑動方向，形 成約4 5度之角度。最好，凹槽5 <之任意相鄰的兩個* a 〃與•b#係排列成使得，與滑動方向iD#垂直且通 一凹槽的終端之虛擬線I L會通過另一凹槽 的主要部份。換句話說，凹槽之任意相鄰的兩個與 會與垂直於滑動方向'D 〃之虛擬線I L至少部份 的重疊。由於短槽5 -之此重叠擺設，當碟匣1B被滑入 碟播放器2 0 1時*可抑制碟匣1 B的振動。亦即，如果 沒有建立此重叠擺設，每當推壓構件2 0 3 a或2 0 3 b 跑在由相鄰的雨個凹槽5 之間所界定的空白區域時•會 容易發生振動。 本纸張又度通用中國园家標皋（CNS)A·!規格（210 X 297公釐） -11 -As can be seen from FIG. 4, the lower half shell 3 2 of the cassette 3 is provided with a first positioning recess 3 6 A and a write protector 3 9 on the back side of the elongated track E 1, and on the back of the elongated track E 2 A second positioning recess 3 6 B and two disc-type discriminating recesses 37 and 38 are provided on the side. When the magazine 1 A is slid into the disc player, the first and second positioning recesses 3 6 A and 3 6 B are used to locate the magazine 1 A. The write protector 39 is used to avoid so-called erroneous rewriting (or error elimination). Disc type identification recesses 3.7 and 3 8 are used as disc trays 1 A This paper size is suitable for 0 Garden House Standard 4 (CNS) A4 specifications < 210 X 297 mm> • 9-4367 6 8 Ar B7 5 、 Invention description (7)-'Read the description on the back of the page first and then fill out this page) When it is slid into the disc player, it provides information about the disc 2 type in the disc box 1 A. In the embodiment shown, the recess 37 is used to provide information about the disc 2 with a higher storage capacity / and the other recess 38 is used to provide information about the lower storage capacity. The shutter member 4 includes an upper diaphragm plate slidably placed on the upper half shell 31, a lower diaphragm plate slidably placed below the lower half shell 32, and a bridge plate through which the upper and lower diaphragm plates can be made. connected together. The sizes of these upper and lower plates are sufficient to cover the corresponding rectangular openings 3 3 or 3 4, so that when the shutter member 4 is in the closed position, the rectangular openings 3 3 and 3 4 of the cassette 3 are completely covered by the plate. shut down. Due to the spring 41, the shutter member 4 is biased to take the closed position. The operation will be described below with reference to FIG. 9 which points out the conventional disc player 2 01. The disc player 201 has a cassette holder 202 installed therein. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs when the magazine 1 A is slid into the magazine holder 2 0 2 of the disk player 2 0 1, the pressing members 2 3 a and 2 0 3 b contact and press the disk magazine 1A's slender tracks E 1 and E 2. That is, the frictional contact between the pressing members 203a and 203b and the thin orbits E1 and E2 will not continue until the disc cartridge 1 A comes to the playback position in the disc player 201. Now it must be noted that because the parallel grooves 5 are provided on the elongated tracks E 1 and E 2, the frictional resistance between the pressing member and the track can be reduced, resulting in the smoothness of the disc box. 1 A in the disc player 2 0 1 Movement, and can avoid unnecessary cracks or scratches on the elongated orbits E 1 and E 2 In addition, as can be seen from FIG. 6 | Even when fine particles or friction powders are generated, these foreign particles 3 0 1 are accumulated or collected In the groove 5, it can protect the disc broadcaster's national standard 0 in the paper standard (CNSM4 specification (210 * 297 mm) -10- 436768 A7 B7 V. Description of the invention (8) 2 0 1 Free of these foreign particles 3 1. Refer to Figure 7, and point out a disc cartridge 1B. This is the second implementation of the present invention (please read the precautions on the back before filling this page). As the disc cartridge of this embodiment 1B is similar to the above-mentioned disc cartridge 1 A of the first embodiment, and only the parts different from the first embodiment 1 A will be described below. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, that is, in this second embodiment * Many inclined parallel short grooves 5 > are formed on each of the elongated tracks E 1 or E 2 instead of the first solid Example 1 A used the elongated groove 5. As shown in the figure * each short groove 5 # forms an angle of about 45 degrees with respect to the longitudinal axis of the disk case 1B, that is, the sliding direction of the disk case 1B. The best Any two adjacent * a 〃 and • b # of the groove 5 < are arranged so that the virtual line IL perpendicular to the sliding direction iD # and passing through the end of one groove will pass through the main part of the other groove In other words, any two adjacent adjacent grooves will at least partially overlap with the virtual line IL perpendicular to the sliding direction 'D 由于. Due to the overlapping arrangement of the short groove 5-when the magazine 1B is slid When the disc player 2 01 is inserted *, the vibration of the disc box 1 B can be suppressed. That is, if this overlapping arrangement is not established, whenever the member 2 0 3 a or 2 0 3 b is pushed to run by the adjacent rain When the blank area defined between the grooves 5 is prone to vibration. This paper is again in accordance with the Chinese Garden Standard (CNS) A ·! (210 X 297 mm) -11-