CN1126872A - Cassette loading device for use in a video cassette recorder - Google Patents

Abstract

A starting lever which is utilized by a tape cartridge loading device which is used in a video recorder, the starting lever includes a base locking paw, a lever arm, a connecting paw and an opening paw, when a tape cartridge is inserted in a cartridge base, the cartridge base is locked at a fixed top board, so as to facilitate a door of the cartridge to be opened.

Description

Be used for video Cassette recorder equipped apparatus for loading cassette

The present invention relates to a kind of video Cassette recorder equipped apparatus for loading cassette that is used for; Relate to a kind of improved apparatus for loading cassette that during magnetic tape cassette inserts video Cassette recorder equipped (VCR), can lock the starting handle of cassette holder motion that has particularly, and the access door of opening magnetic tape cassette slightly is to given angular range, the preliminary work of opening as access door in the full operation.

Typically, the apparatus for loading cassette that uses among the VCR comprises the device that is used for actively not keeping with respect to top board cassette holder, and top board is fixedly mounted on the pair of sidewalls of deck chassis, and magnetic tape cassette is inserted in the cassette holder.And it has a device that is used for tentatively opening before the box that inserts VCR vertically descends at cassette holder the box door, consequently is convenient to opening fully of this.

Be illustrated in seat securing rod 6 used in the loading attachment of prior art among Figure 1A and Figure 1B and start 7 in advance, each is corresponding to above-described cassette holder locking device and box door pre-opening device.

Referring to Figure 1A, seat securing rod 6 with lock pawl 6b and contact portion 6a is rotatably installed on the cassette holder 5a, cassette holder 5a accepts the manually tape cassete 4 of insertion, arrives cassette holder 5a up to tape cassete 4 and goes up given position, by the working position of its loading cassette 4 to it.Lock pawl 6b is mounted on the present securing rod 6, hole 3a by fixing top board 3 is held, thereby limited the motion of cassette holder 5a, up to inserting advancing of tape cassete 4 by the direction towards the arrow indication, seat securing rod 6 is rotated in response to the engagement of contact portion 6a.

In Figure 1B, start in advance 7 to be installed in usually on the cassette holder 5b, with the relation opposite, leading ON operation is subsequently opened box door 4a slightly with described seat securing rod 6.Start in advance 7 to comprise that one is stretched out perpendicular to the unlatching pawl 7b of bar 7 principal planes and has the prominent arm 7a of area supported 7c from bar 7.As mentioned above, be released behind the locking position of cassette holder 5b by securing rod 6, cassette holder 5b begins to move along the direction of arrow indication, so that loading cassette 4 is to its working position.At the loading of cassette holder 5b between moving period, described starting in advance 7 rotated by the decompress(ion) facing to the convex edge face 2a of the top board 2 of area supported 7c, because open pawl 7b control swing box door 4a at given angular range.

Described apparatus for loading cassette of the prior art above, because cassette holder locking device 6 and box door pre-opening device 7 exist as separate part mutually, this apparatus for loading cassette has the big and design of element amount, shortcoming that the production difficulty is big.

Therefore, fundamental purpose of the present invention provides a kind of cassette box device that comprises difunctional starting handle, and the pre-ON operation of box door is put and carried out simultaneously to this difunctional starting handle selectively control enclosure seat.

Above and other objects of the present invention are finished by being provided at the apparatus for loading cassette that uses among the VCR, this device is included in pair of sidewalls fixing on the tape transport and cassette holder slidably is installed between sidewall, and be suitable for accepting to be inserted into tape cassete among the VCR, therefore, load this tape cassete in its working position, described device comprises: a top board, and it comprises a lock hole and a convex edge face, and is fixedly secured on this sidewall; A starting handle, be installed to cassette holder swingably, be used for first, second and third angle degree position between rotatablely move, each position is respectively corresponding to the cassette holder latched position, cassette holder off-position and box door open position, and comprise: (i) lock pawl that extends from starting handle, and install by this way, lock hole by top board keeps described lock pawl, at this moment starting handle rests on first angle position, (ii) one is stretched out connection pawl perpendicular to its principal plane from starting handle, and install by this way, when accepting this box by cassette holder and finish, push away to the front end engagement of box the connection pawl, therefore rotate starting handle from first angle position to second angle position, (iii) lever arm with area supported, so that when the cassette holder loading cassette arrives its working position, the convex edge face of the top board that described area supported engagement ground decompress(ion) faces toward, thereby starting handle turns to third angle degree position from second angle position, (iv) one is stretched out unlatching pawl perpendicular to its principal plane from starting handle, and such mode is installed, when starting handle when second angle rotates to third angle degree position, its Unscrew box door is at given angular range; Be used to the device of starting handle of setovering so that keep this lock pawl by the lock hole of top board.

From above and other objects of the present invention and characteristics will being become obviously, wherein below by description of preferred embodiments in conjunction with the accompanying drawings:

Figure 1A and Figure 1B are illustrated in seat securing rod that uses in the tape loading device of prior art and the schematic diagram of starting in advance;

Fig. 2 is the top view of the starting handle that utilizes in apparatus for loading cassette according to the present invention; With

The different operating of starting handle in Fig. 3 A, 3B and the 3C principle ground presentation graphs 2, described corresponding operating be respectively corresponding to the cassette holder lock operation, cassette holder releasing operation and box door opening operation.

Referring to Fig. 2, Fig. 2 represents the top view of the starting handle 50 according to the present invention, general starting handle 50 resembles a thin plate, a lock pawl 51 that extends from starting handle 50 is arranged, 54, one of lever arm with area supported 55 connects pawl 52 and one and stretches out unlatching pawl 53 perpendicular to the principal plane of starting handle 50 from starting handle 50.

The operation of starting handle 50 will describe referring to Fig. 3 A to Fig. 3 C, and wherein starting handle 50 is placed in the different angles position.Starting handle 50 is installed on the side of cassette holder 40 swingably, with a volute spring 20 towards fixing top board 30 biasing lock pawls 51, be used for rotatablely moving between first angle position, second angle position and third angle degree position, described position is respectively corresponding to cassette holder latched position, cassette holder off-position and box door open position.

At first, starting handle 50 rests on first angle position, and as shown in Figure 3A, wherein the lock hole 31 by top board 30 keeps lock pawl 51, is inserted into cassette holder 40 up to tape cassete 60 and pushes away connection pawl 52 contiguously.Therefore, because the direction that cassette holder refers to by arrow motion is limited, box 60 is inserted into cassette holder 40 and proceeds, the tape cassete 60 of insertion and do not make cassette holder 40 that any moving arranged.And, when starting handle 50 suspends in first angle position, open pawl 53 be positioned in box door 61 lower surface below.

On the other hand, because box 60 is inserted in the cassette holder 40, therefore the lock tabs (not shown) that the release parts 70 that loaded by cassette holder 40 begin to push away box 60 makes box door 61 be in swing state with respect to the box frame to the off-position.

In brief, be inserted into before cassette holder 40 finishes, connect pawl 52 and become and tape cassete 60 engagements of inserting, and rotate, make starting handle 50 rotate to second angle position from first angle position at box 60.Simultaneously, open pawl 53 and be rotated to lower surface engagement with box door 61.The rotation of starting handle 50 discharges lock pawl 51 from top board 30, to allow the working position of cassette holder 40 carrying cases 60 to it, shown in Fig. 3 B.

When lock pawl 51 discharged from top board 30, cassette holder 40 beginning levels were loaded motion, advanced box 60 to its working position.When described loading motion when being afoot, starting handle 50 rotates to third angle degree position from second angle position, and by separating the convex edge face 32 of press fit top board 30, this top board 30 is facing to the area supported 55 that forms at lever arm 54.During starting handle 50 rotated to second angle position, best explanation was at Fig. 3 C, and the unlatching pawl 53 of starting handle 50 is opened the box door to slight angular range, and this needs in the later step of opening box door 61 entirely.

Though represent and the present invention has been described with relevant embodiment, those of ordinary skill in the art understands, can carry out variations and modifications and do not break away from the spirit and scope of the present invention that following claim limits.

Claims (2)

1. one kind is used for video Cassette recorder equipped apparatus for loading cassette, the cassette holder that is included in pair of sidewalls fixing on the tape transport and between sidewall, installs slidably, and be suitable for accepting to be inserted into tape cassete in the video tape recorder, therefore, load this tape cassete to its working position, described device comprises:

A top board comprises a lock hole and a convex edge face, and is fixedly secured on this sidewall;

A starting handle, be installed to cassette holder swingably, be used for first, second and third angle degree position between rotatablely move, each position is respectively corresponding to the cassette holder latched position, cassette holder off-position and box door open position, and comprise lock pawl that (i) extends from starting handle, and install by this way, lock hole by top board keeps described lock pawl, at this moment starting handle rests on first angle position, (ii) connection pawl from the outstanding principal plane perpendicular to it of starting handle, and install by this way, when accepting this box by cassette holder and finish, push away to the front end engagement of box the connection pawl, therefore, the rotation starting handle turns to second angle position from first angle position, (iii) lever arm with area supported, so that when the cassette holder loading cassette arrives its working position, described area supported engagement ground decompress(ion) is facing to the convex edge face of top board, thereby starting handle turn to from second angle position third angle degree position and (iv) one stretch out unlatching pawl from starting handle perpendicular to its principal plane, and install by this way, when starting handle when second angle rotates to third angle degree position, it opens the box door rotatably to given angular range; With

Be used to the device of starting handle of setovering, so that keep this lock pawl by the lock hole of top board.

2. video cassette recorder that has apparatus for loading cassette, the cassette holder that this apparatus for loading cassette is included in pair of sidewalls fixing on the tape transport and installs slidably between sidewall, and be suitable for accepting to be inserted into tape cassete in the video tape recorder, therefore load the working position of this tape cassete to it, described device comprises:

A top board comprises a lock hole and a convex edge face, and is fixedly secured on this sidewall;

A starting handle, be installed to cassette holder swingably, be used for first, second and third angle degree position between rotatablely move, described position is respectively corresponding to the cassette holder latched position, cassette holder off-position and box door open position, with comprise: (i) lock pawl that extends from starting handle, and install by this way, lock hole by top board keeps described this lock pawl, at this moment starting handle rests on first angle position, (ii) connection pawl from the outstanding principal plane perpendicular to it of starting handle, and install by this way, when accepting this box by cassette holder and finish, push away to the front end engagement of box the connection pawl, therefore starting handle rotates to second angle position from first angle position, (iii) lever arm with area supported, so that when the cassette holder loading cassette arrives its working position, the convex edge face of the top board that described area supported engagement ground decompress(ion) faces toward, thereby starting handle rotates to third angle degree position from second angle position, (iv) one is stretched out unlatching pawl perpendicular to its principal plane from starting handle, and install by this way, when starting handle rotated to third angle degree position from second angle position, it was opened to given angular range rotatably; With

Be used to the device of starting handle of setovering, so that keep this lock pawl by the lock hole of top board.

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