DE2211220A1 - Tape cassette ejection mechanism with associated tape recorder - Google Patents

Description

PATENT LAWYERS

DR.-ING. HANS LEYH

Munich 71,

Melchiorstrasse 42

Our reference: MO15P / G-752/3

Motorola _s Ine «9H01 West Grand Avenue Frankli n Parks Illinois V.St.A.

Tape cassette ejection mechanism with associated tape recorder

The invention relates to a tape cassette eject mechanism with associated cassette tape recorder.

In general, the invention relates to electronic tape recorders with an insertable Tape Cassette® ₉ in which manually operated ejection mechanisms are used to control external cassette locking and releasing mechanisms. In particular, the invention relates to the creation of a manually operated cassette ejection Meelianism on a different housing wall than that on which the insertion opening is located on an internal cassette receptacle of the tape recorder.

With the usual arrangement dap under the dashboard tape recorder © to be installed in a motor vehicle Electronic tape recorders equipped with cassette front insert an internal cassette receiving compartment for playing

Wb / wb insertable

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insertable tape cassettes. These tape recorders work very often with a two-point locking and releasing mechanism to secure a grooved cassette housing in the receiving compartment to lock in a first stable position, whereby the tape in the access of the recording or playback elements lies and to release the cassette and thus a removal of the cassette from the receiving compartment in a second stable Facilitate position. A tape recorder with a similar locking and unlocking mechanism, the one with grooves provided cassette housing in the manner described, is in the American patent application No. 3,485,500 by the same applicant, to which reference is made for the purpose of a more detailed explanation of these features. With cassette front slot Tape recorders equipped and intended for installation in motor vehicles indicate that the cassette is in the playback position cassette housing protruding to the front, the protruding Part represents a great risk of injury to the driver and / or front passenger in accident situations.

As a result, it is desirable that the inner storage compartment leading insertion opening not to be provided on the front wall, after which a forward protruding cassette is omitted could be brought. In addition, it is desirable to use the ejection mechanism to operate the cassette locking and unlocking mechanism To be left on the front of the tape recorder together with other operating instruments for ease of use to ensure with the slightest demand for attention.

The invention is therefore based on the object of creating an electronic tape recorder, the inner cassette receiving compartment can be reached via a laterally arranged insertion opening. This is where an ejection mechanism can be operated from the front created, which facilitates the release and removal of the tape case from the interior storage compartment. Besides that a cassette locking device working on two switching positions and release mechanism created via the

- 2 - ejection mechanism

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Unidirectional ejection mechanism from a cassette locked position can be guided into a cassette release division, with the movement of a control member of the ejection mechanism occurs in another direction generally perpendicular to the first direction.

This object is achieved according to the invention in that this cassette eject mechanism has a first part that is movable in a first direction and can engage in the cassette locking and releasing mechanism to the latter to transfer from a locking to a release position that a second part in a second direction, in general perpendicular to the first direction, with a motion reversing linkage connecting the first part to the second part and can arise between these a rotary movement to the movement of the second part in a second direction in a movement of the to implement the first part in a first direction.

A particularly advantageous implementation of the invention is that an electronic tape recorder has a housing with at least two substantially mutually perpendicular and intersecting outer walls which form a front and a side wall of the tape recorder. An inside cassette receiving compartment is accessible via an insertion opening in the side wall, which contains the receiving or playback elements for operating the tape of the insertable tape cassette. A two-point locking and release mechanism can be controlled between a first and a second stable position via an end position latching switch in order to lock the cassette in the receptacle in the first position and in the second stable for later removal from the receptacle To release position. An ejection mechanism consists of a control link, a controlled link, and a motion reversing linkage that connects these links together. The control member is to lie from the front side of the tape recorder from accessible and can in a shift position to correspondingly move the driven member. That

- 3 - controlled

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controlled link can be in the locking and releasing mechanism engage and move it out of its first stable position, after which the end position latching switch moves it into its second stable position Position leads.

Further features and advantages of the invention emerge from the following description of an exemplary embodiment in FIG Connection with the claims and the drawings. Fs show:

Fig. 1 - a front, perspective partial view of an inventive Tape recorder with a housing on which there is an insertion opening on the side and on the front part an operating lever for an ejection mechanism is located;

FIG. 2 is a side elevational view of that shown in FIG Tape recorder, with most of the housing removed and the ejection mechanism in its rest position will be shown;

Figure 3 is a bottom plan view of the tape recorder in general along line 3-3 of Figure 2 showing a cassette lock and release mechanism in FIG Released position of the caseette is shown;

Figure 4 is a lower plan view similar to the tape recorder the illustration in Figure 3, in which the movement of the cassette locking and releasing mechanism between the release and lock positions of the cassette are shown;

Fig. 5 - an exploded view of part of the ejection mechanism, which shows the attachment of this unit to the front housing wall;

FIG. 6 is a partial front view of that shown in FIG 1 en sputum echanism in sciinor rest position j where you front "andurif, for reasons of clarity j η see-through drawing indicated ir I and

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Figure 7 is a fragmentary front view similar to the ejection mechanism 6, but with the unit shown in its controlled position.

In the illustration of FIG. 1, an electronic Tape recorder 10 shown with an insertable tape cassette, which is surrounded by a housing which has an upper cover 12, a lower one and rear cover (not shown) and two side walls, of which only one wall, 13, is shown is. In addition, the housing has a front cover 15, which also serves as the front panel of the tape recorder 10 and on which various operating and display elements can be mounted, such as sliders within a slot 16 and a Bout marker 17.

On the side wall 13, a generally centrally located elongated slot 18 is provided, which provides access to an internal cassette receiving compartment shown in FIG 21 releases. In the front cover or in the front panel 15 of the tape recorder 10 is a corresponding one Slit-like opening is provided for the implementation of an actuating lever which, as will become clear from the following description, for manual control of a cassette ejection mechanism 25 is used.

Figures 2-4 show the inner switching elements of the tape recorder 10, via which the tape recorder can be plugged in Tape cassette 27, Fig. 3, can record and play, which is provided with a surrounding housing to protect a multi-track tape (part of this band is shown at 26 in Figure 2). Usually the housing is made of a plastic-like material

and has a V-shaped groove or groove 27a on one long side, in which the tape cassette 27 is held in the playback position in the form normally customary for tape cassettes. The inside Cassette - receiving compartment 21 is formed by an internal structure, which has two lateral boundaries 28 and a base plate 29 with an outwardly protruding guide part 30. When completely

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In the receiving compartment 21 inserted tape cassette 27, the tape is detected by the tape drive shaft 31 in the form that it the cassette 27 runs through. One on a switch 32 responsive Motor 33 drives a pulley 34 via a belt 35 is connected to the flywheel 36 of the drive shaft. The switch 32 is actuated by the inserted cassette 27. A magnetic tape playback head 38 is aligned by a cam follower 39 which engages on a rotatable cam (not shown) responds, which can be housed within the housing 40. If a combination of tape tracks has been played, a conductor strip bridges the gap on the tape the contacts 41 in order to cause the cam device to change the cam position via an electrical signal take, thereby realigning the playback head 38 to scan a new tape track combination or else the tape recorder 10 is switched off. The base plate 29, which defines the cassette receiving compartment 21, is a Two position cassette lock and release mechanism 45 connected. The individual parts and the functionality of the locking and release mechanism can be found on can best be explained with reference to FIGS. 3 and 4 together with FIG.

The cassette locking and releasing mechanism 45 comprises a lever mechanism consisting of a first arm or a rail 47, which is slidably mounted on the bottom plate 29 of the tape recorder 10 via rivets 48 that allow movement within a Allow groove or a slot 48a. A pin protrudes from the rail 47 through an opening 49 in the plate 29 into the receiving compartment 21, which the locking and releasing mechanism 45 serves as a control member. The lever mechanism also includes a second arm 53, which is mounted pivotably on the base plate 29 via a rivet 55. One end of a limit switch in the form of a spring 57 is on the fixed support 58 and the other end is on the spring retainer 59 of the arm 5 3 attached. In addition, the arm 53 has a cantilever 53a at its end adjacent to the rivet 55 shown in FIG

- 6 - one

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a cam flank 51 engages on the rail 47. The locking spring 57 biases the arm 53 between a jump movement first and second stable position. The first stable position is shown in FIG. 4 with solid lines and the second stable position shown in Figure 3. Will the tape cassette 27 in the receiving compartment 21 inserted, so engages an inner or the front part of the cassette housing in the catch 50 and thus causes itself the rail 47 moves backwards in the receiving compartment 21, the rivets 48 guiding the movement of the rail 47 in a slot 48a. the Cam flank 51 engages arm 5 3a around arm 5 3 around 55 to pan. In this arrangement, an inward movement of the cassette 27 against the detent 50 leads to a movement of the Arms 5 3 in its first stable position.

This explains that when the arm 53 is pivoted by 55, the end of the spring 57 on the spring holder 59 has a Reached position in which the spring tension at each end of the spring leaves the equilibrium position, so that it snaps into place The first stable position takes place as can be seen from the illustration in FIG. 4. The bottom plate 29 can have raised sections 29a and 29b are equipped to thus provide stops for the arm 5 3 at to form its movement in the first and in the second stable position. In addition, when pivoting the arm 5 3 engages Roller 61, which is rotatably attached to the arm 5 3, into the groove 27a of the Cassette 27 and moves the cassette into a locking position, in which the tape at the individual tap elements described is present. Via a cutout in the plate 29 at 6 3, the roller 61 can move in a normally arcuate path into the Move the inside of the receiving compartment 21. In this position one pushes (not shown) pressure roller in the cassette 27 against the shaft of the drive roller 31 to erias the tape in the space -sen. When the drive shaft rotates, the pressure roller thus becomes moved and the teaching track tape passed the playback head 38, to give you audio information on the tape.

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If the arm 53 is moved out of its first stable cassette locking position as shown in FIGS. 2 and 3 transferred to its second stable position, the movement of the end of the spring 57 on the spring holder 59 to a leaving the equilibrium, after which the spring the arm 53 with a jumping movement in the second stable position pretensioned. By moving the arm 5 3 into the second stable position, the arm 53a causes the rail to move 47 in the forward direction (outward), which means that the Notch 50 presses against the cassette housing while at the same time the roller 61 is lifted out of the groove 27a in the cassette along the arcuate path. The combined movement of lifting out the roller 61 and the movement of the rail 47 leads to positive movement of the cassette 27 to its second stable position. In this position, the cassette 27 is within the Receiving compartment 21 completely free or notched and needs from the operator only to be grasped and removed.

On the other hand, the operator can remove the cassette 27 then remove when the locking and releasing mechanism 45 is in its first stable position; this will the cassette 27 is strongly pulled outwards, the force being transmitted to the roller 61 via the groove 27a. By moving On the roller 61, the arm 53 pivots by 55, the locking spring 57 being actuated and the lever mechanism in its second stable position is tensioned; this releases the cassette 27 and can then be pulled out of the receptacle 21.

The tape cassette 27 can also be quickly removed from its first stable locking position with the aid of the ejecting mechanism 25 according to the invention be transferred into their second stable release position »In some assembly positions of the tape recorder 10 below Automobile dashboards may either not be desirable or possible to allow the cassette to be removed 27 to apply the required force, although the locking and release mechanism 45 already in its second position

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is located. As already mentioned before, the catch 50 acts as a control element for the locking and releasing mechanism HS when the cassette is inserted. It will now be explained in what form the cassette ejection mechanism 25 for releasing the cassette 27 from the cassette locking position as Control member works.

The caseette ejection mechanism 25 also includes one Lever mechanism which has a first or actuated member 70 which serves as an elongated pivot cam which is pivotably mounted on the base plate 29 via a rivet 72 and whose free end 71 is coupled via a connecting rod 74 to other connecting levers of the ejection olfactory system. The lever mechanism includes a linear Second or control member 75 to be actuated (see illustration in Fig. 5), which is slidably mounted on the front wall 15 of the housing 11 via rivets 76 and in a pair of elongated slots 77 and 78 is received or guided in the wall 15. If one assumes the position of the tape recorder 10 shown in FIG. 1, thus the slots 77 and 78 are generally vertical with the rivets advantageously oriented in the shape that they slide through vertical slot 77. The length of slot 77 may be slightly above that of slot 78, so is the slot 71 determines the length of movement or the stroke of the control member. That Control member 75 includes arm 23 which is oriented in the shape that it protrudes through slot 78 in front wall 15, as this already in connection with FIG. 1 during the movement of the control member 75 from a rest position (FIG. 6) into a working position (Figure 7) has been explained. The lever mechanism further comprises a third lever or an angle lever 80, which acts as a movement reversing device serves, whereby the movement of the control member 75 in its working position via the rod 74 in a pivoting movement of the controlled Member 70 is implemented by 72, after which the dashed line in Figure 4. shown laying is achieved. The angle lever 80 is pivotable mounted on the front wall 15 by a rivet 81, has a protruding portion 82 which with the free end of the Rod 74 is connected and is mechanically connected via a rivet 8 3

- 9 - the

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coupled to the control member 75. The rivet 83 is received in an elongated slot 84 of the control member 75 in the form that generally horizontal movement of the mechanical coupling between links 75 and 80 is possible while the control member 75 performs a generally vertical movement between the slots 77 and 78. It should be noted that (for Formation of a lever arm) the pivot axis at 81 is offset from the mechanical coupling between the links 75 and 80 at 83 is, so that the angle lever 80 pivots by 81 and that with a generally vertical movement of the control member 75. This Pivoting movement of the bell crank 80 is then converted into a generally horizontal movement of the rod 74 and transmitted directly to the controlled member 70. From this representation it will also be seen that with appropriate adjustment of the links 75 and 80 on the front wall 15 relative to the link the connecting rod 74 can be dispensed with.

The control arm 23 has a locking surface 23a which can engage in the lower part of the slot 78 in order to limit the downward movement of the control member 75; In addition, an extension 23b and an adjacent opening 23a are provided here in order to be able to attach a suitable outer button (not shown) here. In addition, the control member 75 has opposite guide rails 85 which engage in the rear part of the front cover 15 in order to prevent any undesired movement or tilting when moving into the working position. In order to prevent the movement of the arm 53 of the locking and releasing mechanism 45 via the controlled member 70, this member 70 is equipped with a cam flank 73 along an edge part next to the .i% X 72 and is in the Maintained shape so that an engagement of the boom 53a of the arm 53 is possible. If the locking and releasing mechanism is in its first stable cassette locking housing, the extension arm 53a touches the cam flank 73 (see illustration in FIG. 4), whereby the cam flank presses against the extension arm 53a with a force

- 10 - the

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which the arm 53 is removed from its first stable position sufficiently far to cause the spring 57 from its Equilibrium comes.

The spring 57 brings the arm 53 into its second stable position and corresponding to the movement of the previously described Cassette, the detent 50 and the roller 61 of the locking and releasing mechanism * + 5 work together to lock the cassette 27 into the To move the release position. Above a return spring 87, which between the movable free end 71 of the link 70 and a fixed connection 89 is suspended on the base plate 29, the controlled member 70 returned to its rest position. The return movement of the member 70 also causes the control member 75 and the angle lever 80 is returned to its starting or rest position.

It should be noted that apart from the fact that

the actuated member 70 is preferably designed as a pivot cam, the required forward movement with pressure against the arm 53 to bring the movement from a first position a certain distance from the tension of the spring 57, likewise by a rail mechanism such as Rail 47 can be generated, which can be pulled forward against the return spring 87 via a direct lever connection in the manner of the connecting lever 7 k.

It goes without saying that the invention is not limited to the illustrated and described embodiments limited, but equally includes all possible changes and variants.

In summary, a tape cassette eject mechanism described. A housing for an electronic cassette tape recorder has two substantially perpendicular and intersecting outer walls, one of which has an access opening one inside cassette slot and the other has an actuator for a tape cartridge eject mechanism. The actuator can be moved into a working position and is with a control member inside the housing

- 11 - connected

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connected, which can be moved accordingly by the former.
The control member can engage in a two-point locking and release mechanism in order to transfer it from a first cassette locking position to a second cassette release position, the actuating member being moved into its working position and an insertable tape cassette being able to be removed from the receptacle.

- 12 - Claims

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Claims (2)

M (H5P / G ~ 752/3 Claims (ly In a cassette tape recorder rait a cassette holder for holding an inserted tape cassette including a cassette locking and releasing mechanism in one first direction is movable in order to release a tape cassette inserted in the receiving compartment, which is in this compartment this mechanism is held in a locking position, a cassette ejection mechanism to operate this locking and release mechanism from the locking to the release position, characterized in that this Cassette ejection mechanism (25) has a first part (47) which is movable in a first direction and in the cassette locking and release mechanism (45) can engage to the latter from a locking to a release position transfer that a second part (53) is movable in a second direction, generally perpendicular to the first direction, wherein a movement reversing linkage (80) connects the first part (47) to the second part (53) and a rotary movement occurs between them lets to move the second part in a second direction into movement of the first part in a first direction to implement » 2. Cassette tape recorder according to claim 1, characterized in that the movement reversing linkage (Kl an angle lever has, which is connected at a certain point to the second part (53) and has a pivot axis that consists of the connection point can be lifted out to a movement of the first part (47) in a first direction on the movement of the second part (53) to be carried out in a second direction. - 13 - 2098A0 / 1 001 MO15P / G-752/3 Cassette tape recorder according to claim 1, characterized in that g e k e η η - because the first part (47) of the ejection mechanism (25) is an extended pivoting button, " whose free end is connected to the movement reversing linkage (80) and whose pivoting section is next to the locking urid Release mechanism (45) is mounted and which has a cam surface that can be engaged therein to release the locking and transferring the release mechanism (45) from a locking position to a release position. Cassette tape recorder according to Claim 3, characterized in that it has a housing which has two essential vertical and overlapping applications comprises, wherein a first of these walls contains an access opening to the cassette receiving compartment (21) and the the other wall contains the second part (53) which is movably mounted in the longitudinal direction on this wall and from a rest position can be moved into a working position to pivot the first part (47) so that the locking and releasing mechanism (45) is transferred from a locking position to a release position. - 14 - 209840/1 001 Blank page