JPS58177554A - Cassette moving device - Google Patents

Abstract

PURPOSE:To move a cassette smoothly and securely in a stable state free of play, etc., through simple structure, by providing fixed guide grooves at a cassette frame side and fitting moving guide members and a projection part to be guided on a cassette receiving base in the guide groove. CONSTITUTION:When a motor is driven while the cassette receiving base B is at a cassette loading/unloading position, its rotation force is transmitted to a driving pinion 21 through a worm gear mechanism, worm gear 22, and driving arm 24. A driven pinion 20 rotates synchronously to rotate and move both pinions 20 and 21 along racks 18 and 18, and consequently the cassette receiving base B moves back horizontally and then moves down vertically to be set at an operation position under the guidance of the moving device consisting of fixed guide grooves 4 and 4 of a cassette frame A, guided plates 14 and 14 of the cassette receiving base B, and moving guide members 9 and 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette moving device incorporated in a magnetic recording/reproducing device such as a video tape recorder.

As a cassette loading/unloading method recently adopted in magnetic recording/reproducing devices, a cassette loading/unloading port is provided on the curved surface of the device body, and the cassette inserted through the cassette loading/unloading port is accommodated in a cassette holder. is moved horizontally to the rear (backward) using the motor as the drive source, and then lowered vertically to reach the operating position.When ejecting, move the cassette holder in the opposite direction to the above to reach the cassette loading/unloading position. The so-called cassette ifJ
There is a surface loading/unloading method.

The present invention provides a cassette moving device based on such a cassette loading/unloading method, which eliminates vertical inclination, horizontal shake, wobble, etc. when moving the cassette cradle from the loading/unloading position to the operating position or vice versa. It is an object of the present invention to provide a cassette moving device which can move a cassette smoothly and stably from beginning to end and has a simple structure.The structure thereof is as follows.

The present invention accommodates a cassette inserted through a cassette loading/unloading port provided on the cassette loading/unloading surface of the main body of a magnetic recording/reproducing device in a cassette cradle, and during operation, moves the VcB cassette cradle backward from the loading/unloading position along the cassette frame. After moving the
The cassette moving device moves the cassette downward to reach the operating position, and when ejecting, moves the cassette in the opposite direction from the operating position and returns to the loading/unloading position. A fixed guide groove consisting of a horizontal groove along the horizontal groove and a vertical groove continuous to the horizontal groove is recessed, and a hanging guide member is fitted into the horizontal groove of the fixed guide groove by sliding only the horizontal groove. The movable guide member has a lip that reaches the rear end of the horizontal groove, and the vertical r*
A is provided with a vertical groove communicating with the cassette holder, and ζ is slidably fitted into the fixed guide groove on the outer surface of the left and right side walls of the cassette holder, and the horizontal groove of the fixed guide groove is connected to the horizontal groove and the movable guide member. A guided convex portion that can be fitted across both sides is provided, and the guided convex portion is horizontally moved in the front-rear direction together with the mochi transfer guide member in the horizontal groove portion of the fixed guide groove, and in the vertical groove portion, the guided convex portion is This cassette transfer m+ device is characterized in that it is configured to move vertically along the longitudinal groove and the vertical groove portion of the movement guide member that stops at the rear end.

Hereinafter, an uninvented embodiment will be described with reference to FIG.

Reference numeral A denotes a cassette frame, and the frame Aid is fixed to a substrate or the like of the main body of the magnetic recording/reproducing apparatus (not shown) in such a manner that its front face faces a cassette loading/unloading opening provided at the front face of the main body of the magnetic recording/reproducing apparatus (not shown). A cassette holder B accommodates a cassette inserted from the cassette loading/unloading port, and moves along the cassette frame A.

The cassette frame A is constructed by connecting left and right side walls 1 and 2 in the form of thick plates made of plastic or the like with connecting rods 3... (or a top plate).
A fixed guide 4.4 is recessed on the inner surface of each. The fixed guide caps 4, 4 have a horizontal groove 5 recessed in the inner surface of the side walls 1, 2 over the entire length in the front-rear direction, and a horizontal groove 5 that continues downward from the rear end and middle part of the horizontal groove 5. It consists of vertical grooves 6.7 at both the rear and front parts which are recessed. Of these two vertical grooves 6.7, by recessing the rear vertical groove 6 shallower than the horizontal groove 5, a step 8 is formed at the boundary between the rear end of the horizontal groove 5 and the rear vertical groove 6. ing.

9.9 is a thick rectangular plate-shaped movement guide member made of plastic or the like, and is connected to the horizontal groove portion 5.51C of the fixed guide grooves 4, 4.
They fit together so that they can slide freely in the front and rear directions. The width of the moving guide member 9 in the front-rear direction is larger than the width of the front vertical groove 87. Therefore, the guide member 9
slides only in the horizontal groove 5 without moving from the horizontal groove 5 to the front vertical groove 7, and in the rear end product of the horizontal groove 5, the downward movement to the rear vertical groove 6 is prevented by the step 8 and stops. Further, a vertical groove 10 having the same width as the rear vertical groove 6 is recessed in the center of the guide member 9, so that when the guide member 9 stops at the rear end of the horizontal groove 5 as described above, , this vertical groove 10 and the rear vertical groove part 6 are vertically aligned and communicate with each other.

On the other hand, the cassette holder B is formed into a U-shaped bar shape in which left and right side plates 11, 11 and a bottom plate 12 are integrally connected.
On both left and right sides of the rear end, stoppers 13° 13 are erected fe4 to prevent rain from moving the cassette backward from the storage position. This cassette holder B has left and right side plates 11.11.
Guided plate 14.14 made of plastic etc. on the outer surface of
is fixedly installed, and the cassette holder B is fixed between the left and right side walls 1.2 of the cassette frame A via the guided plate 14.14.
+1 freely supported. That is, the guided plate 14° 14 is slidable in the fixed guide grooves 4, 4 in the cassette frame A with a sliding protrusion rt & a mating protrusion g ((15, 1
6 integrally on both front and rear outer surfaces, and the l1fi full convex portion 15 is directly slidably fitted into the horizontal groove portion 5 2,
The rear convex portion 16 is fitted into the vertical groove 10 of the moving guide member 9, which is fitted into the horizontal groove portion 5 and the slide white 41. In this way, the guided plate 14 is moved integrally with the movable guide member 9 in the horizontal groove portion 5 of the fixed guide groove 4, and the movable guide member 9 moves horizontally to 1f when moving backward. After stopping at the rear end of part 4 5, the front protrusion 15 is inserted into the front vertical groove glS7, and the rear protrusion 16 is inserted into the rear vertical groove 6 along the longitudinal groove 10 of the movable guide member 9 in the stopped state. The guide plate 14 is moved downward when the guide plate 14 is inserted into the guide plate 14, and when the guide plate 14 is moved forward, it is moved in the opposite direction. Therefore, due to the guiding action of the fixed guide groove 4.4, the movable guide member 9.9, and the guided plate 14.14, the cassette pedestal B is horizontally moved rearward from the cassette loading/unloading position during operation. After that, it vertically moves downward 11 to reach the operating position, and when ejecting, it moves in the opposite direction to the above and returns to the loading/unloading position.

Next, a driving device for moving the cassette pedestal B as described above will be explained.

A horizontal portion 17a and a vertical portion 1517b continuing downward from the rear end of the horizontal hole are formed on the inner surface of the horizontal groove portion 5°5 in the fixed guide grooves 4, 4 formed on the left and right side walls 1, 2 of the cassette frame A, respectively. An L-shaped slot 17, . 17, and groove holes 17 are provided on the outer surfaces of the left and right side walls 1.2.
．． A rack 18 having a horizontal section 18a and a vertical section 18b is provided along the section 17. This rack 18.1
8 may be formed separately from the left and right walls 1 and 2 and fixed to the side walls 1 and 2, but usually they are attached to the same side wall 1 as shown in the figure.
．． A bulge is formed integrally with 2. On the other hand, the cassette pedestal B can be freely rotated in the front-rear direction at the center y with the interlocking rod 19 passing through the side plates 11, 11 and the guided plates 14, 14 between the upper ends of the left and right side plates ll and 11. cassette frame A, and both ends of this interlocking rod 19 are further fixed to the cassette frame A.
A pinion 20.21 is attached to the through end of the slot 17.17 so as to rotate integrally with the interlocking rod 19, and the pinion 20.21 is attached to the rack 18.1.
8 is engaged. Of these pinions 20 and 21 on both sides, the pinion 21 on the right side when viewed from the front is the driving force described below. The left side pinion 20 is interlocked with the +1 mechanism and used as a drive pinion, and the left side pinion 20 is connected to the right side pinion 2 through the interlocking rod 19.
I am trying to link it to 1.

Hereinafter, the right pinion 21 will be referred to as a driving pinion, and the left pinion 20 will be referred to as a driven pinion.

A worm gear 22 is rotatably attached to the outer surface of the side wall 2 of the cassette frame A, and an arm guide 23 is provided along the radial direction on the outer surface of the worm gear 22.
A drive arm 24 is slidably secured to the arm guide 23. This drive arm 24 has a long hole 24a along the arm length direction, and by engaging this long hole 24a with the support shaft 22a of the worm gear 22, the U-movement arm can be moved within the range of the long hole 24a. 24 is the worm gear 22
The tip of this drive arm 24 is slid in the radial direction so that it hangs. 11 pinion 21 is attached and connected to the right end of the interlocking rod 19, and the rotational force of the worm gear 22 is transferred to 132. +1111-mu24
The signal is transmitted to the drive pinion 21 via. In this case, the drive arm 24 is connected to the drive bin 21 along the rack 181C.
The transfer f! IIVc Therefore, the worm gear 22 that slides in and out of the radial direction of the worm gear 22 is connected to the motor 2 which can rotate in forward and reverse directions via a two-stage worm gear mechanism 25.
The rotational force of this motor 26 is transmitted to the drive pinion 21.

To summarize the operation of the above configuration, when the motor 26 is rotated while the cassette holder B is at the cassette loading/unloading position, the rotational force is applied to the worm gear mechanism 25, the worm gear 22, and the drive arm 24. The signal is transmitted to the drive unit 21 via the drive unit 21. As a result, the obituary vinyl ゛・2
At the same time as pinion 1 rotates, driven pinion 2
0 rotates, and both pinions 20.21 are connected to the rack 18.
By rotationally moving along 18i'n, the cassette pedestal B moves between the fixed guide grooves 4, 4 of the cassette frame A mentioned above and the guide plate 14 of the cassette pedestal B.
As a result of the guiding action of the moving device according to the invention, which is accommodated in the moving guide member 9.
After one stroke, it moves vertically downward and is set to the operating position. Also, at the time of ejection, the motor 26 rotates in the opposite direction, and the cassette pedestal B moves vertically upward f/, from the operating position.
After that, it moves horizontally to one side of the city and returns to the loading/unloading position.

Therefore, when using the cassette moving device according to the present invention, the fixed guide @4.
The protrusions 15, 16 of the guided plate 14.14 on the cassette pedestal B side and the movable guide member 9.9 as an intermediate member are fitted into the horizontal groove 5 of 4 so as to be slidable in the front and rear directions, respectively. Since these are configured to perform a sliding movement while making surface contact with each other at the wide surface bonding portions of the upper and lower surfaces, in the process of horizontal movement of the cassette pedestal B along the horizontal groove portion 5, the cassette holder B moves in the vertical direction or There is no risk of the table tilting left or right, shaking left or right in a horizontal position, or wobbling in the front and back directions, and it can move smoothly and stably horizontally.

Further, the guided plate 14 is moved from the horizontal groove portion 5 to the vertical groove portion 6.7.
In the transition period of transition to , with the movable guide member 9 stopped at the rear end of the horizontal groove 5, the rear convex portion 16 of the guided plate 14 is moved along the longitudinal groove 10 of the guide member 9 to the rear vertical groove. 6, the transition of the rear convex portion 16 to the rear vertical groove portion 6 is performed very smoothly.

That is, for example, when the movement guide member 9 is omitted and the rear convex portion 16 is moved directly to the rear vertical groove portion 6, the rear convex portion 16 moves from the horizontal groove portion (5 to the rear vertical groove portion 6). There is no risk that the guided plate 14, that is, the cassette pedestal B, will tilt toward the rear or bump into the rear vertical groove 6 due to the convex portion 16 temporarily losing support at a corner. This point is exactly the same when moving the cassette pedestal B from the operating position to the loading/unloading position.

Therefore, when using this cassette moving device, the cassette can be moved smoothly, stably, and reliably from the beginning to end from the loading/unloading position to the operating position or vice versa, while having a simple structure.

By the way, in the above embodiment, the driving pinion 21 and the slave U1 pinion 20 are interlocked and connected by the U1 leaf 19 suspended on the cassette pedestal B so that the two pinions 21 and 20 are rotated synchronously. According to this method, as described above and as shown in the figure, the mechanical part of the drive device including the worm gear 22, the drive arm 24, and the worm gear mechanism 25 only needs to be installed on one side of the cassette frame A, so that the overall structure of the drive device is simplified. It has advantages such as low parts cost and low assembly cost, easy assembly, and high mass productivity. However, in the present invention, the specific configuration of the drive device is not particularly limited. For example, the same drive mechanism may be provided on both left and right sides of the cassette frame A, and these drive mechanisms on both sides may be connected by a power transmission shaft suspended and fixed to the cassette frame A. ,
The transmission shaft may be rotationally driven by a motor installed on one side of the cassette frame. In addition, in the drive device, as a means for applying the driving force from the drive mechanism to the cassette pedestal B as a moving force, in the above embodiment, the rack has the advantage that there is no risk of slipping and the left and right synchronization is ensured. 18.18 and binions 20.21 are used, but rolling rollers may be used instead. on the other hand,
In the moving device of the present invention, in the above-mentioned embodiment, the convex portions 15. which are slidably fitted into the fixed guide F grooves 4, 4 on the cassette frame A side on the outer surfaces of the left and right side plates ll, 11 of the cassette pedestal B. Although the guided plates 14 and 14 having the guide plates 16 and 16 are fixed, for example, the cassette pedestal may be made of plastic, and the guided convex portions may be integrally provided on the outer surfaces of both side walls of the cassette pedestal. Furthermore, in the above embodiment, two vertical grooves on the cassette frame side and two guided protrusions on the cassette holder side that engage with the vertical grooves were provided in the front and rear, but these vertical grooves and guided protrusions Only one strip is sufficient as long as the balance can be maintained when moving the pedestal.

As described above, according to the uninvented cassette moving device,
Although it has a simple structure of just recessing a fixed guide groove on the cassette frame side and fitting the movable guide member and the guided convex part on the cassette holder side into this guide groove, it is possible to move the cassette to the loading/unloading position. A cassette in a magnetic recording and reproducing device that uses this type of so-called cassette front loading/unloading system, which allows the cassette to be moved smoothly and reliably between the operating position and the operating position in a stable state without any tilting, wobbling, shaking, etc. This can greatly contribute to improving the reliability of loading and unloading operations.

[Brief explanation of the drawing]

The figures show embodiments of the present invention; FIG. 1 is a perspective view showing the cassette cradle in the cassette loading/unloading position; FIG. 2 is a perspective view showing the cassette cradle in the operating position; The figure is an exploded perspective view, Fig. 4 is an enlarged cross-sectional view in the state shown in Fig. 1, Fig. 5 is an enlarged cross-sectional view in the state shown in Fig. 2, and Fig. 6 is a longitudinal section along line VI-w in Fig. 4. Side view, Figure 7 is Figure 5 -
FIG. 8 is a side view taken along the line ■--■ in FIG. 4. A...Cassette frame, B...Cassette holder, 1
゜2... Left and right side walls of the cassette frame, 4... Fixed guide groove, 5... Horizontal groove portion, 6, 7... Vertical groove portion, 9... Moving guide member, 10... Same guide Vertical groove of member, 11° 11... Left and right side plates of cassette holder, 1
5.16...Guided convex portion. Patent applicant Imazaike Seiko Co., Ltd. Agent Patent attorney Etsu Kotani Figure 1 Figure 2 Figure 4 Figure 7

Claims (1)

[Claims] 1. Store the cassette inserted from the cassette loading/unloading port provided in the front I\ii of the magnetic recording/reproducing device main body in the cassette cradle, and at the time of 11th operation, move the cassette cradle along the cassette frame to the loading/unloading position. (A cassette moving device in which the cassette is moved backward from j-1' and then moved downward to reach the operating position, and when ejecting, the cassette is moved from the operating position in the opposite direction to the above and returned to the loading/unloading position, A fixed guide groove consisting of a horizontal groove extending in the front-rear direction and a vertical groove continuous to the horizontal groove is provided on the inner surface of the left and right side walls of the cassette frame. A sliding movement guide member is fitted in only the horizontal groove portion, and a vertical groove is provided in the movement guide member that communicates with the vertical groove portion when the guide member reaches the rear end of the horizontal groove portion. On the other hand, on the outer surfaces of the left and right side walls of the cassette holder, the grooves are slidably fitted into the fixed guide grooves, and in the horizontal iJl! portion of the fixed guide grooves, the grooves straddle both the horizontal groove portions and the movable guide member. A guided convex portion that fits is provided, and the guided convex portion is horizontally moved in the front and back direction together with the movable guide member in the horizontal groove portion of the fixed guide groove, and stopped at the rear end of the horizontal groove portion in the vertical groove portion. 1. A cassette moving device configured to vertically move along a longitudinal groove and a vertical groove portion of a moving guide member.