JPS61208661A - Cassette loading mechanism - Google Patents

Abstract

PURPOSE:To decrease the number of components and to simplify a mechanism by moving vertically a drive member itself driving a horizontal moving control means for horizontal movement incorporatedly with a cassette holder vertically in vertical movement. CONSTITUTION:Since a housing 18 and a cassette holder 1 rise up to the 1st position, further a depressing lever 40 turns clockwise and the lower face of a projected piece 40a comes to an upper position from the lower face of rollers 34, 35, the upper face of a cassette 45 is abutted on the rollers 34, 35, and the cassette 45 starts moving horizontally in the ejecting direction. Since the cassette 45 enters the lower part of a folded part 43b of the 2nd lever 43, the 2nd lever 43 turns counter clockwise, the 1st lever 42 is turned clockwise in interlocking therewith and a projection 42b depresses a switching cover 41 in the opening direction, then the cover 41 holds the opening state to eject the cassette 45. Thus, it is not required to provided two independent control means for horizontal and vertical movement and the cassette loading with the very simple mechanism is attained.

Description

[Detailed description of the invention]

H) Industrial Application Field The present invention relates to a cassette loading mechanism suitable for use in a video tail recorder (VTRJ). Background Art In recent cassette-type VTfts, a cassette on the front of the VTR body with various operation switches, The cassette was inserted into the cassette holder in the main body through the cassette insertion opening, and the cassette and the cassette holder were moved to the mounting position and set, so that operations such as recording and playback could be performed at that position. The so-called front-loading cassette loading mechanism is gaining popularity. In this front loading method/TR, a method has been proposed in which the cassette is sucked into a cassette holder exclusively for vertical movement using a roller that moves the cassette horizontally moving vm drive means. especially. Vertical insertion type cassette used for dubbing VTRs. That is, in a system in which the cassette is inserted in the longitudinal direction, the above-mentioned suction method is preferable since the horizontal movement distance of the duck 9 is long. Japanese Unexamined Patent Publication No. 56-34165 discloses a loading mechanism using the above-mentioned suction method. 1) Horizontal movement of the cassette to the holder using rollers in the prior art? Therefore, the sprocket that moves on the drive motor and the sprocket separate from this sprocket are placed in the vertical direction, and the chain is passed between both sprockets, after the horizontal movement. A part of the companion pin member disposed on the side of the cassette holder engages with the chain, and moves with the movement of the chain as the chain rotates, thereby creating a vertical movement mechanism for the cassette holder. It is configured. (C) Problems to be Solved by the Invention According to the prior art, a horizontal movement mechanism such as a roller for horizontally moving the cassette, and a vertical movement mechanism such as a sprocket and chain for vertically moving the cassette holder are: In addition to the fact that the drive motor I/C moves, it is a completely separate member, so an increase in the number of parts and a complication of the mechanism cannot be avoided. B) Elaborate means for solving the problems The present invention is characterized in that during vertical movement, the drive member for driving the horizontal movement control means for horizontal movement is moved vertically together with the t2 cassette holder. (E) Function Since the present invention is constructed as described above, the driving means for the horizontal movement control means can also be used as the entire vertical movement control means. It is an extremely simple mechanism. (F) Example An example of the present invention will be described below with reference to one drawing. 1 and 2 are a perspective view and a plan view of the apparatus of this embodiment. The width is a cassette holder, and the two side edges are long holes of the first and second guide grooves 161 (the first and second guide pins 181191 loosely fitted in 71, and the slide plate 1ll) on the side surface ta+ of the support plate +21. L I Qa ) is loosely fitted into the fourth
A fifth guide bin Illσ2 is arranged respectively on the t-side plate 0,
A sixth guide pin U is disposed to be loosely fitted into the third guide groove I of the back rfI+47 of the support plate +27, and is connected to the companion back plate [61]. The slide plate (position regulating means J 11 (l) has an elongated hole (10a) extending horizontally as shown in FIG. 10bJ, and an L-shaped piece (100) located in the notch an between the side plate α3 and the back plate (161).
A regulating piece (10 dJ) is integrally formed with the positioning guide 412 of 181, and the fourth and fifth guide pins σ11a21t are loosely fitted into the elongated holes (10a) and are attached to be slidable in the horizontal direction, and the side plate Q31 First shot α9 between
is always biased toward the cassette insertion port. The support [121 that supports the cassette holder 111k] is composed of six sides: a side surface (31 (4)) and a back surface (51).
+ is loosely fitted into the @1 second guide groove +elt7+, and the housing (Ill'11-) is fitted with a fourth guide groove (2υ). It consists of a vertical part (7a) into which the bottle (91) is loosely fitted and a horizontal part (7b) into which the sixth guide pin (10b) is loosely fitted. ) recess for )

[7C] is placed. A third guide groove I extending in the vertical direction into which the third guide pin α51i is loosely fitted is provided on the back surface 15+. Also, the lower side of the side surface (4) has a large cutout for tape loading. The drive motor (221 has the bent portion (3a) of the side surface C3+)
A belt is placed between the nine drive pulley Ω placed on the top and coaxially attached to the drive motor, and the pulley ■ rotatably attached to the bent part (6b) and fitted to the heel of the nine rotation shaft. ■ is stretched, and a worm frame constituting the driving means is fitted together with the housing a second so that the driving force of the drive motor ■ is transmitted to the rotating shaft (to), and further supports the worm @ and at the same time The position regulating means housing αa is pivotally supported so as to be slidable in the thrust direction. In addition, the fitting part (18a) of the housing U having an H-shaped cross section is fitted to the fa4 guide fi&11, and the housing U is placed in the uppermost position (18a) as shown in FIG.
When the slide plate 1111 is in the first position), the lower surface and the regulating piece 10dJ of the slide plate 1111 come into contact and are held in the first position. The small diameter worm wheel (28a J and the large diameter first gear (28b) are coaxially integrated and the side surface +3
1 is a stepped gear. The worm wheel (28a) is in mesh with the worm @ when the housing a& is in the first position, and the first gear (28b)
As soon as it is fixed to the rotating shaft (2'J), it engages with the second gear ω. '311flIt is a support lever to maintain the downward pressing force of the roller C34Jc3SI, which will be described later, and is a single-stage gear @
The shaft G2, which supports the shaft G2, is supported on the side surface of the Eri, and a rotating shaft (toward) is supported at one end, and the other end of the second spring fixed to the side surface (31) is attached to the side surface (31), and the other end is attached to the side surface (31). It is urged to rotate clockwise. As mentioned above, the second gear is fitted, and one end of the support lever ((IIVc) is fixed. 72: The rotating shaft is further equipped with a roller (IIVc). The other end is fixed to the cassette-in detection lever (to).The cassette-in detection lever (to) is pivotally supported on the side [fi 141, and is further attached between the side surface +41 and the cassette-in detection lever (to). It is biased counterclockwise by the spring B7), and the pressing part at the tip (36aJI
It is disposed on the ri side surface 141 and is located opposite the cassette-in detection switch (to). In addition, the stepped gear (to), the second gear gloss, and the rotation axis c! A horizontal movement control means is constructed on the J and roller C sides. The eel is fixed to the side surface (31) which engages with the worm (A) when the housing (181 moves vertically). It is a pressing lever with a protruding piece (for pressing the cassette) at the tip.
40a) is placed, and furthermore, as shown in FIG.
A protrusion (18b) protruding from the back surface of the housing α& that passes through the side plate (130 through hole (13a)) is loosely fitted into the side plate (130), and as the housing (181) moves vertically, the cassette holder mountain also moves vertically. 't-, and the press lever f41 is configured to rotate counterclockwise.The cassette insertion slot is located at 0υ (1?Ot-). , G1211
43 is pivotally supported by the side surface (31), and the fan-shaped gear part (42aJ(
43a), the first and second levers are in an F-engaged state. No. 1 lever (42 has a long arc-shaped hole L441 on the side +a+)
A protrusion (4
2bJ is arranged, and the tip of the old 8J2 lever has a bent part L45b that comes into contact with the cassette (451) when inserting the cassette.
) extends through the notch 14blk of the side surface (31).When the inside of the 1471i cassette holder moves vertically and reaches the cassette mounting position (second position), the lower surface of the cassette holder +11 comes into contact and turns ON. The cassette attachment completion detection switch is fixed to the side [fi 131. The cassette/nod attachment operation of this device configured as described above will be explained below. When the cassette is vertically inserted from the cassette insertion slot ■, the opening/closing t (41) becomes open, and when the manual insertion operation is continued, the tip of the cassette (c) enters the roller 1341051 and the lower part of the protruding piece '(40a) and rotates twice. Pushed upward by the shaft □□□, the cassette-in detection lever (to) rotates clockwise against the bias of the third spring 371, and the suppressing portion (66a) moves the cassette-in detection lever to 1 (to). This causes the drive motor to start driving, and the drive pulley
The driving force is transmitted to the worm through the belt (1), pulley (1), and rotating shaft 124'r. At this time, the housing +181 that supports the worm @ has a regulating piece (10d
) is held at the top position (first position),
The worm shaft is in mesh with the worm wheel (28a), so the stepped gear @ rotates, and this driving force is the first
It is transmitted to the second gear ω via the gear (28b), and the first rotating shaft (jl rotates counterclockwise. Furthermore, the second and third springs 3
At 71, 19 is pressed downward, that is, on the top surface of the cassette (6).The rollers (B) (to) also rotate counterclockwise;
The cassettes (4) are sucked in in the insertion direction. In this way, the cassette (49) is moved horizontally. The tip surface (45a) of the cassette (C) and the slide plate +11
j comes into contact with the L-shaped piece (IOC), and the slide plate +1+1 also moves horizontally together against the biasing force of the first spring uS. Then, when the distal end surface (45L) comes into contact with the back plate [e], the cassette (c) stops and the horizontal movement is completed. In this state, the WJ6 guide pin (10b) is the second guide! (The movement of 7+ in the horizontal part (7b) is completed. At the same time, the regulating piece (10d) is also released from its contact with the lower surface of the housing 1g, and stops regulating the position of the no. 1 housing a8 at the first position. Mayu, due to the stoppage of the case (45), the roller HC
(The rotation of !9 is blocked. Therefore, the 1st rotation axis, 2nd gear gloss, and stepped gear (to) are also stopped. On the other hand, since the drive motor @ continues to drive, the worm @ also stops rotating. Continue. Here, the worm wheel t28i!L J that is meshing with the worm punishment is prevented from rotating and is in the next state, and the position restriction by the restriction piece (10d) has been released, so the worm @ is the worm wheel ( 28a) and starts to move vertically downward integrally with the housing a81.During this vertical movement, the worm@ is disengaged from the rack (
2 rotations) and move to the lowest end (second position) of the shaft @. As the housing a8 moves downward, the L-shaped tongue piece (40b) protrudes from the back surface of the Harajingumi δ, and the long (4
The cassette holder (opening) penetrated by the protrusion (181) loosely fitted into the cassette holder (0o) also moves vertically downward. Furthermore, the slide plate +1 (l) also moves down together with the cassette holder il+. At this time, Move the 6th guide pin (10b Ji 2nd guide pin 4)" groove (71) vertical part (7a)%@1
・Second and third guide pin darkness 191α51, first and second
・The third guide groove (6I17+ (14Fr) slides and serves as a guide for vertical movement. The suppression lever +40 has a protrusion (18b
) to the Erihousing 08 and rotate, skein, y)
When the holder Il+ is vertically moved, the cassette (49) is pressed downward and is securely held within the cassette holder Ill. When the cassette >1' holder... moves down a predetermined distance, the lower surface It comes into contact with the cassette installation completion detection switch 14n, and the switch (471) is turned ON.This stops the drive motor cnJtz, the rotation of the worm fins, and the vertical movement of the housing tt8/cassette holder Il+ ends. 2 position is reached, and the cassette installation is completed as shown in Fig. 5.At this time, the cassette 14!
19r1 The cassette is firmly held in place by receiving a strong downward pressure. Next, the first, second, and third guide pins 18+197α9 have reached the lowest ends of the first, second, and third guide grooves 16>17+141, and the sixth guide pin t10b) has reached the bottom of the second guide groove (71). It is inserted into the recess [7C].In this state, the tape loading mechanism (not shown) has an edge side +4
Tape loading is done through the notch on the first side, recording and
Operations such as playback are performed. Next, the cassette ejection operation at the time of ejection will be explained. After unloading the eject button (not shown) located on the front panel, the drive motor rotates in the opposite direction to that when the cassette is installed, and engages with the worm shellac 6I while releasing the rotating shaft (24 )k rises and becomes engaged with the worm wheel (28a).Meanwhile, the holder αa and skein v) also rises to the first position, and the press lever (4a also rotates clockwise and protrudes). Since the bottom surface of the piece (40a) is above the bottom surface of the roller ■ (to), the top surface of the cassette (c) is
It comes into contact with (g). A worm wheel (28fL), 1st gear (28bJ, 2nd
Since the rotational force of the worm Ω is transmitted through the gear ■ and the rotating shaft @r and rotates clockwise, the cassettes 14 and 19 start moving horizontally in the ejection direction. During this horizontal movement, the second lever 143 rotates counterclockwise because the cassette (a is below the bent part of the 8I2 lever 43 < 45b), and the second lever 143 moves accordingly. rotates clockwise. Since the protrusion (42b) suppresses the opening/closing flDt-opening direction, opening/closing 1! The open state is maintained to allow the ejection of cassette (4!9) to F (4j).The specified horizontal movement of the cassette (c) is performed, and the cassette (4!i) is moved to the roller (to).
When separated from the cassette in detection lever CG, the cassette in detection lever CG rotates counterclockwise and the cassette in detection switch (to) turns OFF.
F, and the driving of the drive motor (2) is stopped. In this way, the operation of ejecting the cassette (C) from the cassette insertion slot (3) is completed. (g) Effects of the Invention As described above, according to the present invention, the drive means itself that drives the horizontal movement M1# means when the cassette is moved horizontally is moved vertically when the cassette is moved vertically, so that It is no longer necessary to provide two independent control means for the cassette, and the cassette can be loaded with an extremely simple mechanism, which has extremely high practical value.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a plan view, FIG. 3 is a perspective view of essential parts of the slide plate portion, and FIG. FIG. 5 is a perspective view of the main parts showing the positional relationship between the cassette holder and the suppression lever, and FIG. 5 is a side view with the side plate removed at the second position. Mountain...cassette holder, (l...slide plate (position regulating means), brocade...housing, ■...cassette insertion slot, ■...worm, (to)...stepped gear , Kanji... (B) Rotating axis % (To)... 2nd gear, (To) (To)... Roller, Hit... Cassette.

Claims (1)

[Claims] (1) Insert the cassette into the cassette holder from the cassette insertion slot at the first position, move the cassette to the second position while holding it in the cassette holder, and perform operations such as recording and playback at the second position. In the cassette loading mechanism, the cassette loading mechanism includes a driving means that moves vertically between the first position and the second position integrally with the cassette holder; horizontal movement control means for horizontally moving the cassette; holding the driving means at the first position when the insertion of the cassette into the cassette holder is incomplete; and allowing the driving means to move vertically when the insertion is completed; A cassette loading mechanism comprising a position regulating means.