CN85101053A - Tape vidio recorder - Google Patents

Abstract

One comprises a frame according to tape vidio recorder of the present invention, and it has supported a mechanism that is used for recording and playing vision signal on the videotape of a tape cassete.This frame is being moved on the working position and on a position on the surface level basically.On this working position, this frame is forwards stretched out from the shell of this tape vidio recorder, is used to load onto and/or ejects a video cassette recording tape.Especially this video tape recorder has two working positions at least, and any one working position all can be recorded and/or put and resembled therein.On this first working position, frame is positioned within the space of this video tape recorder shell.And on second working position, frame is stretched out from the video tape recorder shell at least in part.

Description

Tape vidio recorder

The present invention relates to a tape vidio recorder with new-type dress band system at large.Particularly, the invention relates to one and use magnetic tape cassette to record, put the miniaturization tape vidio recorder of vision signal, it is used for dress band requisite space and is reduced to minimum degree.

In recent years, tape vidio recorder, particularly family expenses tape vidio recorder become very universal.Because this achievement of family expenses tape vidio recorder, make that making heals and become the increase in demand of video tape recorder of miniaturization.And when market continue to enlarge thereupon, it is urgent further that this demand is becoming.

In the prior art, tape vidio recorder has used various dress band systems, for example: top-loading system or the anterior band system that adorns.This traditional dress band system have make tape vidio recorder do the shortcoming of bulkiness.For example, the video tape recorder with top-loading system is provided with in the working position and flicks a cassette can making movement in vertical direction between the position.Flicking on the position, this cassette is ejected the more top of this video tape recorder casing upper surface, to allow to insert or take away videotape.

This need be that cassette takies in some space, the top of video tape recorder shell just.Traditional top-loading system need have some added space to be used for cassette is done the manual operation of dress band in the shell upper of video tape recorder.

On the other hand, in traditional front portion dress band system, make cassette at working position and ejected position intermediary movements with a hoisting gear.This hoisting gear drives cassette vertically by reaching motion backward in one on the video tape recorder shell anterior tape seat forward.Because cassette moves between working position and ejected position in the video tape recorder shell, so the tape vidio recorder shell must be provided with the vertical moving that enough inner spaces are used for cassette.This just makes that this video tape recorder enclosure volume is big, has limited the possibility that the height of shell reduces simultaneously.

The present invention is intended to solve in traditional dress band system and runs into these problems, thereby and reduces the requisite space of dress band.

Therefore, a main purpose of the present invention is to provide a tape vidio recorder that novel dress band system is arranged, and this dress band system needs less space for putting into and eject the video cassette recording tape.

Another more special purpose of the present invention is to be to provide to have an a kind of like this tape vidio recorder of adorning the band system, and this system makes to be used to pack into and to eject the required vertical space of videotape and is contracted to minimum level.

Further aim of the present invention provides one and can record on two positions of the cassette that videotape is installed at least, puts a kind of video tape recorder of elephant.

In order to reach above mentioned and the other purpose, a video tape recorder according to the present invention includes a frame, and it is to be used to support make video cassette record, put the mechanism of vision signal.This frame moves as surface level for working position and ejected position basically.When the working position, in order to pack into and/or to eject videotape, this frame is shifted to the place ahead from exterior case.Preferablely be, this video tape recorder has two working positions at least, and can record and/or put on its arbitrary working position and resemble.In first working position, this frame is in the inner space of video tape recorder shell.When second working position, this frame ejects a part at least and comes from the video tape recorder shell.

In another desirable structure, this frame is connected with a driving mechanism, and the latter makes frame at working position and ejected position intermediary movements.The driving mechanism of this frame is to interrelate with one or more manual manipulation mode selector switchs, and makes frame move by the mode of operation of selector switch.

In addition, the desirable structure of this of video tape recorder has comprised a cassette that fits together with this frame.This cassette and frame are the bottoms that is in frame when being positioned at its working position, so that tape is remained on the working position.And move to ejected position so that insert or when taking tape away, this cassette comes out from the bottom angled of frame when frame.

According to an aspect of the present invention, a tape vidio recorder includes: a video tape recorder shell, one a frame that is used to record and puts the video mechanism of elephant is installed thereon, this video mechanism is used to accept that video cassette uses, in boxlike viedo recording cassette, comprised a videotape as the video media, it is characterized in that: this frame can move in the middle of the primary importance and the second place, when primary importance, stretch in the frame slave shell, to accept video cassette, and at second position chord position on opportunity in the inside of video tape recorder shell, and the videotape mechanism that recorded admits and to be used for the recording playback image on its position.

Fig. 1 is the skeleton view of the embodiment of a tape vidio recorder recommending in according to the present invention, and a frame is in the drawings represented to be on the ejected position;

Fig. 2 is a skeleton view of the tape vidio recorder of Fig. 1, and it shows that this frame is on the working position of video tape recorder enclosure;

Fig. 3 is a skeleton view of the tape vidio recorder of Fig. 1, and it represents that this rack section ground is on the working position of outside of video tape recorder shell;

Fig. 4 is a sectional view of the tape vidio recorder of Fig. 1, and this frame is on the position identical with Fig. 1 (notes) in the drawings;

Fig. 5 is a sectional view of the tape vidio recorder of Fig. 1, and this frame is on the position identical with Fig. 2 (notes) in the drawings;

Fig. 6 is a sectional view of the tape vidio recorder of Fig. 1, and this frame is on the position identical with Fig. 3 in the drawings;

Fig. 7 is the skeleton view of this frame and a cassette;

Fig. 8 is the exploded view of this cassette;

Fig. 9 is an enlarged perspective that is used for the driving mechanism part of this frame and this cassette;

Figure 10 is the enlarged perspective of the part of video tape recorder among a Fig. 1, refers in particular to out the power drive mechanism of driving mechanism among Fig. 9;

Figure 11 is the side view of a part of the tape vidio recorder of Fig. 1, illustrates moving of a magnetic tape cassette gland bonnet;

Figure 12 is that view is cut in the part that is installed in the video cassette on the cassette of having amplified;

Figure 13 is that a part that is installed in the videotape on this cassette is cut and looked skeleton view;

Figure 14 is the block scheme of a controller using in the tape vidio recorder in Fig. 1;

Figure 15 be one by the performed primary control program process flow diagram of the controller of Figure 14;

Figure 16 is the process flow diagram of the subroutine of primary control program among a Figure 15, and it is used to control the execution that this frame arrives ejected position;

Figure 17 is the interrupt routine process flow diagram that can carry out arbitrarily in the primary control program of Figure 15 is carried out, and it is used for selecting in two working positions of a dress band system embodiment of being recommended one;

Figure 18 is the process flow diagram of another interrupt routine of execution behind power cutoff;

Figure 19 is the skeleton view of an applicable video cassette of this embodiment that tape vidio recorder of the present invention is recommended;

Referring now to accompanying drawing, Fig. 1 to 6 particularly, the embodiment of a tape vidio recorder 1 of this recommendation has a video tape recorder casing 2, and it usually is a box structure.This video tape recorder casing 2 is provided with an opening 5 on its front panel 3.In illustrated embodiment, this opening 5 is positioned at the left side of this video tape recorder 1 vertical central axis.The inside that frame 4 is placed in video tape recorder shell 2 movably is used for moving giving between the fixed position.In fact, this frame 4 is a position that all is drawn out and a position intermediary movements that all is pushed back, magnetic tape cassette can insert in frame or therefrom take away on previous position, and in the middle of two positions mentioning in the above one, the first half of this frame 4 is positioned at the outside of video tape recorder shell 2.The position that previous this frame is all extracted out is referred to as " ejected position " below.The position that this frame in back all pushes is called " first working position " hereinafter, and last-mentioned position, i.e. centre position between the ejected position and first working position, thereon, the previous section of this frame 4 is stretched out from the opening 5 of the shell 2 of video tape recorder, but this moment, tape was loaded into for recording and putting to resemble, and this position is referred to as " second working position " below.In these accompanying drawings, Fig. 1 and 4 expressions are in the frame of ejected position.Video tape recorder when Fig. 2 and 5 expression frames are in the 1st working position.Video tape recorder 1 when similarly, Fig. 3 and 6 these frames 4 of expression are in second working position.

One movably panel 6 be fixed on the front end of this frame 4, be used for moving with frame.This removable panel 6 is so to constitute: promptly when this frame was in aforesaid first working position, it can seal the opening 5 on this front panel 3.Therefore this panel 6 movably is as shown in Fig. 2 and 5, all consistent with opening 5 on its size and dimension.

Comprised in this video tape recorder shell 2: one contains one or more storeies, and the system controller of control module etc. is to its explanation more below.And, though the necessary element of picture intelligence is recorded and/or put to not clearly expression on the accompanying drawing, in the casing 2 of having packed into.

The display that has a series of manual operation buttons is set on opening 5 one side of front panel 3.Though on the accompanying drawing, particularly express a kind of special arrangement form at Fig. 1 to Fig. 3, this group button is the right side at opening on it, and this position with respect to opening also can be changed certainly.

This frame 4, Gai draws together speech, is contained on the square plate.A pair of guided way 7 is arranged on the both sides of square frame 4.This guided way 7 is a C font structure basically, and its back is against frame 4.In this guide rail each is connected with a pair of guide wheel 8 and 8 ' mutually.And this guide wheel is by means of a rotating shaft 9 and 9 of stretching out from the inwall of video tape recorder ' and install on the shell 2 of video tape recorder.This guide wheel 8 is positioned near opening 5 places of video tape recorder shell 2 and in the both sides of frame 4 it is connected mutually with corresponding guide rail 7.This guide wheel 8 is positioned on the surface level identical with guide wheel 8, but more near the front end place of video tape recorder shell, as shown in Fig. 4 to 6.Arrange that whereby frame 4 can be at above-mentioned ejected position, free movement in the middle of first working position and second working position.This guide rail 7 and guide wheel 8 and 8 ' the constituted guiding mechanism of a frame.This frame 4 has supported a Gai and has drawn together in fact video mechanism with respect to alleged hereinafter " video mechanism 10 ".This video mechanism has comprised that whole being used to drives on the videotape and the video cassette 74 that will illustrate below and has carried out the necessary element of recorder information.So this video mechanism just comprise a pair of commentaries on classics pulley arrangement 11 and 11 ', they are in the first half of frame 4, and stretch out to the last direction of the upper surface of frame.Have on this commentaries on classics tape spool device 11 and 11 ' at an upper portion thereof surfaces change take the lead 12 and 12 '.This commentaries on classics tape spool device 11 and 11 ' and change and to take the lead 12 and 12 ' all transmission shaft (not shown)s that are assembled into the device that hereinafter will describe.This video mechanism 10 also comprises location case 13 and 13.This register pin is accurately fixed on the preceding edge near this frame.On the other hand, register pin but is positioned at frame 4 than back edge.These register pins 13 ' have taper to push up 13a '.These register pins and 13 ' be provided with come with record tape drum 74 on pilot hole be coupled, be used for magnetic tape cassette in record, put when inserting frame before resembling tape cassete with respect to the accurate location of frame.

Also include a rotating head assembly 14 in this video mechanism, it comprises a going barrel 14a and a fixing drum 14b.As known, this going barrel has the video magnetic head of one or more known assemblings on it to make it to rotate with itself.

Though not clearly expression in the accompanying drawings, this video mechanism also has some magnetic heads: such as a magnetic recording head, a control head and an erasing magnetic head, a tape guide that comprises a series of guiding rod member of guiding tape track route, get band mechanism for one, it is used for and will pulls out in the tape cassete and walk around from aforesaid videohead, to resemble usefulness do recording playback, a tape transport mechanism, it comprises: capstan, pinch roller and drive tape along mechanism that the track route that is determined by tape guidance mechanism is advanced.The element of these video tape recorders noted earlier is assembled on the upper surface of this frame.On the other hand, this video mechanism also has some to be contained in frame bottom element down, and these video organs that are contained on frame 4 lower surfaces have comprised that a driving mechanism is a motor or several motor, a power transmission mechanism and a servo-drive system.This driving mechanism and the power transmission mechanism driven in rotation magnetic head of joining together, changes tape spool device or the like at main drive shaft.

All elements of this video mechanism 10 are assembled into and make them in the aforesaid position that flicks on the frame 4, can move with frame itself between first working position and second working position, show as Fig. 1 to 6.

A frame driving mechanism makes frame to move to: ejected position, and on one among first working position and second working position.This frame driving mechanism will contrast detailed being described below of Fig. 4 to 7.

A static drawing strickle guide frame 15 is parallel to a side of frame, promptly be parallel to the frame right flank on illustrated embodiment, this drawing strickle guide frame 15 is to be fixed on the shell 2 of video tape recorder, it is installed by one or more web members, is placing such as the side that this drawing strickle guide frame 15 of cassette subassembly (not shown) is close to frame 4.The structure of drawing strickle guide frame 15 is thin bar member, and its first part is the part of level, and second part is vertical component and connects 1 that the 3rd part of second portion is a curved portion.This drawing strickle guide frame includes a guide groove 16 that almost extends on its whole length, and this guide groove 16 has level and vertical component 16a and 16b, and as drawing strickle guide frame 15, the third part 16c of two parts above connecting.This third part 16c bending about 90 °, this part 16c is referred to as " curved portion " in the back in the literary composition.

As shown in Fig. 4 to 7, the vertical component of this drawing strickle guide frame 15 and guide groove 16 extends out to the upper end from horizontal component.Hold a guide gip 49 in this guide groove 16, thereby limited the slip of its horizontal component.This drawing strickle guide frame 15 also has a tooth bar 17 that extends on its bottom surface simultaneously.As shown in Figure 7, this tooth bar 17 is extending on the whole length of first of drawing strickle guide frame.Frame driven wheel 19 and tooth bar 17 engagements.This frame driven wheel 19 is fixedly to be assemblied on the free end of a rotatable gear shaft 18, and it by video tape recorder shell 2 usefulness one bearings (not shown on the figure) rotatably support.This gear shaft 18 extends out from the outside, edge of frame 4, and on its external freedom end frame driven wheel 19 is housed.This frame driven wheel 19 so is arranged: be on the range of movement of this frame it and tooth bar all keeps engagement, and drive chassis is moved in first and second working position at aforesaid ejected position.This frame driven wheel 19 makes actuation mechanism be connected with a drive motor 50 via a power, and its power drive mechanism will be described hereinafter.In fact, this drive motor 50 is can be reverse, thus it can be on any turning to drive chassis driven wheel 19.When this driven wheel 19 drives in the direction of the clock, then frame 4 is forwards moved.On the contrary, if this gear 19 rotates counter clockwise, then frame 4 is driven to the rear.Therefore, frame 4 can be driven into ejected position among Fig. 1 to 4 by gear 19, on first working position among Fig. 2 and 5 or second working position of Fig. 3 and 6.As shown in Fig. 4 and 5, in the time of on the ejected position of frame and first working position, this frame driven wheel 19 is in respect on the front-end and back-end on the tooth bar 17.

The ejecting mechanism 20 of a tape cassete is with frame 4 as hold body.This tape cassete ejecting mechanism 20 comprises a pair of main swivel arm 21 and 22 that extends along the sidewall of frame 4.As shown in Figure 8, this swivel arm 21 has be structure crank-like or broken line shape in its planimetric map, and it has a part of outwards bending, and this part is divided into forward part 23 and rear section with this arm.This forward part 23 wants high at its vertical height direction rating unit.Guide gip 49 promptly upward stretches out to the outside on the angle from the preceding of forward part 23 of this swivel arm 21.Elongate slots 24 be positioned at forward part 23 bottoms near.One basically the slat 25 of L shape from the preceding flap of forward part 23, extending forward.This slat 25 has the front end of a transverse curvature, and it is bent to form interior by this front end.An aperture 26 is arranged on the anterior bent-up end of this slat 25.The bottom of a wound spring 40 is fixed in hole 26.Inside and outside a pin 27 stretches to from rear section (on the swivel arm).Shape hole, a garden is arranged on the rear end of this rear section.One end fit of a hole, garden on this swivel arm 21 and an axle 33.

Another swivel arm has the rear section 28 of big length at the side bearing of trend along frame 4, stretches out the part of a level to, transverse curvature on the front end lower limb of this rear section 28.This level couples together forward part 29 and rear section 28 to the part of, transverse curvature.As obviously illustrating among Fig. 8, the vertical height of forward part 29 is forwards to being tapered.The front end of this forward part 29 outwards curves an acute angle.Worn a hole 30 in this bent front ends, it fix a wound spring 40 ' the bottom.

A pin 31 is protruding from this rear section 28.Hole, a garden is similarly also arranged on the rear end of rear section 28.The other end fit of this hole, garden of this swivel arm and axle 33.

As shown in Figure 7, this axle 33 is bearing on the frame 4 by rotatable by a carriage 32.This carriage 32 is stretched from frame 4 upward in the back angular position of frame.Because this swivel arm 21 and 22 is to be fastened on axle two ends of 33, and axle 33 can freely rotate in the middle of carriage 32, so arm 21 and 22 just can center on a rotation center rotation of spools 33 together.

A pair of sub-arm 34 and 35 usefulness Qi Yuan holes 39 are contained on the axle 33 rotationally.Can find out that by Fig. 7 this sub-arm 34 just in time is placed on the inboard of swivel arm 21 abreast.On the contrary, sub-arm 35 but is positioned at the outside of swivel arm 22.

This sub-arm 34 is a crank-like in positive apparent direction basically, and it has a center section to bending in its front portion and in the middle of the rear section.On the top edge of this center section, extend the tab 37 of a level.On these small pieces 37 aperture 36 is arranged, it is used for fixing the upper end of wound spring 40.This sub-arm 34 also has the slotted hole 38 of a vertical direction.Pin 27 stretches out from the rear section of swivel arm and vertical long 38 holes with this are slidingly matched.

This spring 40 is extension springs, and it makes the slat 25 of rotation axis and the tab 37 on the sub-arm 34 produce approaching pulling force each other.Its result is that arm 21 and 34 always tries hard to keep together.Pin-the hole of pin 27 and 38 of slotted holes is combined with and helps arm 21 and 34 and remain on and give fixed position and close and fasten.

This sub-arm 35 possesses the structure same as first sub-arm basically, includes a coboundary at center section and prolongs and make horizontally extending horizontal joint sheet 37.Have on this tab a hole as fixing spring 40 ' the upper end.This spring 40 ' be a tension spring, it makes and produces approaching strength each other between tab 37 and the aduncate front end of swivel arm.This sub-arm 35 also has a vertical slotted hole 38, and the pin 28 that stretch out it and swivel arm 22 rear sections matches.By the spring force of tension spring 40 ' provide and sell 28 and the cooperation of 38 of slotted holes make swivel arm 22 and sub-arm keep giving fixed position relation.

A magnetic tape cassette card 41 is fixed on the forward part of this sub-arm 34 and 35.This cassette 41 has a horizonal base plate 42 and a pair of by the upwardly extending sidewall 43 of this bottom edge.This sidewall 43 is fixedly fitted on correspondingly the sub-arm 34 and 35.

This base plate 42 has that the part of stenosis is in the middle of the two side portions in the middle of one, on two side portions, have hole, two gardens 44 and 44 '.These two holes 44 and 44 ' basically be encased in cassette 41 in viedo recording cassette on commentaries on classics band jack consistent.Therefore this hole, garden 44 and 44 ' the position naturally also with change tape spool device 11 and 11 ' the position consistent, so allow its latter on the working position, to be inserted in the commentaries on classics band jack on the viedo recording cassette.Tape cassete catch 45 and 45 ' from horizontal flatly the stretching out of the coboundary of sidewall 43.This magnetic tape cassette catch 45 and 45 ' previous section to upper angled so that open forward.These catch 45 and 45 ' the part that leans forward allow tape cassete to insert in the cassette 41 easily, easily.

Fig. 9 and 10 represents driving mechanisms and power drive mechanism with driving transmission gear 19, and makes frame 4 reach to rear drive forward by means of motor 50 thus.

A fan-shaped gear 46 is rotatably installed on the gear shaft 47, does to rotate around the turning axle consistent with gear shaft.The axle journal of this gear 47 is contained on the frame 4 in itself known mode.This fan-shaped face of gear is facing to the forward part 23 of swivel arm 21, near there being a drive pin 48 to stretch out to the outside on its toothed periphery.The horizontal slotted hole of this drive pin 48 and swivel arm 21 upper front portions 23 matches.

This fan-shaped gear 46 is rotated to center on gear shaft 47 by motor 50 drivings.Corresponding to the rotation of this fan-shaped gear, swivel arm 21 rotation round axle 33 under the driving of drive pin rotates.The rotating force that is caused by the rotation of swivel arm 21 is delivered on the swivel arm 22 by axle 33, to cause the rotation of arm 22.

It will be seen that fan-shaped gear 46 normally is in just in time on the position shown on Fig. 9, this swivel arm 21 is horizontal basically on this position.This fan-shaped gear 46 is driven to the position that is moved upward with swivel arm 21 after driving, at this moment frame 4 is on the ejected position in Fig. 1 and 4.

When swivel arm 21 and 22 upwards rotated, sub-arm 34 and 35 was by spring 40 and sell 27,28 and then swivel arm 21 and 22 gang bands cassette 41 and upwards rotated.The superior displacement of this cassette 41 put be called as this cassette hereinafter " ejected position " on the contrary, when the normal horizontal position of swivel arm 21 and 22 at them, the base plate 42 of cassette 41 is with the upper surface keeping parallelism of frame 4 basically.On this position, the commentaries on classics tape spool device 11 and 11 of frame 4 ' by the hole, garden 44 and 44 on the base plate 42 of cassette 41 ' stretch.The position of this cassette will be referred to as " placement location " hereinafter.From Fig. 1 to 6 as can be seen, on the ejected position of frame 4, this cassette also is to be on its ejected position.On the contrary, when frame 4 no matter be that this cassette always remains on its placement location in first working position or on second working position.

As can be seen, only when frame 4 was moved out to this ejected position from the video tape recorder shell, cassette 41 could move on the ejected position that ends it.This cassette 41 move upward and the outside motion of frame 4 between coordination be to control by the cooperation between guide groove on the drawing strickle guide frame 15 16 and the guide gip 49.This coordination will describe in detail hereinafter.In addition, this guide gip 49 is being controlled the operation of frame driving mechanism.

Motor 50 is contained on the lower surface of frame 4 by means of an assembling carriage 51.Motor 50 positions are near the back edge of frame 4.Because motor 50 has utilized assembling carriage 51 to be fixed on the frame 4, so motor and frame are moved forward and backward together.Motor 50 has a motor shaft 52, has laid a driving wheel 53 on the axle.This driving wheel 53 is connected with a bigger belt pulley 55 on the power drive mechanism by a belt 57.This belt pulley 55 is fastened on the wheel shaft 54, this wheel shaft 54 by bearing (not shown) be supported in the turning axle rotation that is used on the frame 4 around it.

Belt pulley 56 than minor diameter also is contained on the wheel shaft 54 regularly, and it and belt pulley 55 centres have some at interval.This belt pulley 56 is connected with belt pulley 60 via a chape 61.This belt pulley 60 is fastened in the rotating shaft 59.A central gear 62 is contained in the rotating shaft 59 regularly, and it and belt pulley 60 are apart from certain intervals.This central gear has constituted the part of a cross-over connection gear mechanism.

This cross-over connection gear mechanism 58 comprises a ring gear spare 63, and it is considered as first rotating mechanism.This annular gear wheel member is a ring gear that inside is the garden cylindricality, and ring gear garden within it has gear 64 on week.A pair of cross-over connection wheel 69 internal tooths with its central gear 62 and ring gear member 63 couple together.

A rotating disk 66 is regarded as second rotary body, and it is contained in the annular gear wheel member 63 of this cross-over connection gear mechanism 58 and the centre of belt pulley.This rotating disk 66 forms an one-piece construction with gear 67, and gear 67 is near belt pulley 60.The gear parts 67 of this rotating disk 66 will be called as " second output gear " below.This rotating disk 66 is bearing in the rotating shaft 59 in order to rotate around axle 59 with being rotated.Have on this rotating disk 66 a pair of on diametric(al) the dead eye of positioned opposite pass rotating disk.The dead eye of this rotating disk 66 inserts a pair of gear shaft 68, and gear shaft 68 supports cross-over connection gear 69 rotatably.Use this structure, this rotating disk 66 is driven along the moving of internal tooth 64 of annular gear wheel 63 by cross-over connection gear 69, at this moment the cross-over connection gear by motor 50 through belt pulleys 53,55,56 and 60 and drive.Belt pulley 53,55,56 and 60 diameter dimensions have determined the rotating speed of the gear parts 67 of this rotating disk 66.When annular gear wheel member 63 locked can not rotations, this just causes the motion of this cross-over connection gear.On the contrary, when this annular gear wheel member rotated automatically, this rotating disk 66 just had been prevented from rotation, so, annular gear wheel member 63 by the power of motor via belt pulley 53,55,56 and 60 and chape 57 and 61, central gear and cross-over connection gear 62 and 69 drivings.

This annular gear wheel member 63 utilizes an integral wall to be assembled in regularly in the rotating shaft 59.A gear parts and its formation one integral body are arranged on the integral wall of annular gear wheel member, and this gear 65 is used as first output gear.The wall portion that this first gear is positioned at the ring gear member carries one side of tooth 64.This first output gear 65 and a reduction gearing 70 are meshed.This reduction gearing 70 is contained on the end of gear shaft 18 regularly, and its other end is being adorned driven wheel 19.Therefore, drive driving force that this frame 4 reaches backward motion forward and be by motor via belt pulley 53,55,56,60, cross-over connection gear mechanism 58 and reduction gearing 70 pass on the driven wheel 19 again.

Second output gear 67 and a reduction gearing 72 are meshed, and the latter is assembled on the end of rotating shaft 71 regularly, and a bearing bracket or analog (not shown) are used in rotating shaft 71, can be rotated to support on the frame 4.On an other end of this rotating shaft 71, adorned a driven wheel 73 with driving fan-shaped gear 46.Therefore, this fan-shaped gear by motor 50 via belt pulley 53,55,56 and 60, cross-over connection gear mechanism 58, the second output gears 67, reduction gearing 72 and driven wheel 73 drive, driven wheel 73 is meshed with the marginal tooth of fan-shaped gear 46.

As mentioned above, in accordance with the embodiments illustrated, frame is at ejected position, moving between second working position and first working position, and the rotation of cassette 41 can use single motor, also is that motor 50 reaches.For example, when the ring gear member by motor during via the drive force of central gear 62 and 69 transmissions of cross-over connection gear, this driven wheel 19 rotates and drive chassis 4 reaches backward forward along guide rail 7 and moves.On the other hand when rotating disk 66 by motor 50 during via the drive force of central gear 62, this cross-over connection gear moves on week along the interior garden of annular gear wheel member 63, has just caused the rotation of fan-shaped gear 46.The rotation of fan-shaped gear 46 has just driven swivel arm 21 and 22, and the sub-arm 34 that connects together of cassette and 35 moves between the ejected position of cassette and its placement location.

As mentioned above, conversion by power path, the driving force of motor 50 can selectively be delivered on the driven wheel 19 or be delivered on the fan-shaped gear 46, the conversion of this power path is by the guide groove 16 of drawing strickle guide frame 15 and the slip between guide gip engagement, and cross-over connection gear mechanism 58 works.The transfer process of this power path will be done detailed explanation below.

When guide gip 49 was in the horizontal component of guide groove 16, promptly as shown in Fig. 2 and 3, the vertical movement of swivel arm 21 had been limited.Therefore, fan-shaped gear 46 is locked on its original position, as shown in Figure 9.The result is that rotating disk 66 remains on its latched position and stoped its rotation.In this case because driven wheel 19 can rotate and drive chassis forward, backward the motion, annular gear wheel member 63 is freely to rotate.Therefore, as electrical power, the driving force of motor is by via belt pulley 53,55, and 56 and 60, central gear 62, cross-over connection gear 69, annular gear wheel member 63, the first output gears 65, reduction gearing 70 is delivered on the driven wheel 19.This driven wheel will rotate according to turning to correspondingly of motor, along the guiding route of guide rail 7 and guide wheel 8 and 8 ' limited moving frame forward or backward.

When frame 4 moved to forward extreme position, guide gip 49 arrived the bottom of vertical component 16b on the guide groove 16 of drawing strickle guide framves 15.Being meshed in interior week of vertical component 16b on guide gip 49 and the guide groove 16 just stoped frame 4 and driven wheel 19 to more anterior motion.In addition, as long as guide gip 49 is arranged in this vertical component 16b, the motion backward of frame 4 and driven wheel 19 also has been prevented from.Therefore, this driven wheel is obstructed and has no longer rotated.This has also just pinned annular gear wheel member 63 and has made it no longer to rotate.In this case, because guide gip 49 is to be arranged in vertical component 16a, swivel arm 21 can be around the axis of rotation rotation of rotating shaft 33.Therefore, this fan-shaped gear 46 just becomes and freely rotates.The axis of rotation around it rotates under the effect of cross-over connection gear drive power so rotating disk 66 is passed at motor.

In the case, the driving force of motor is via belt pulley 53,55, and 56 and 60, central gear 62, cross-over connection gear 69, rotating disk 66, the second output gears 67, reduction gearing 72 and driven wheel 73 are delivered on the fan-shaped gear 46.Its result is: this fan-shaped gear 46 is driven by the direction identical with turning to of motor 50 and rotates.According to the rotation of driven wheel 73 driving fan-shaped gears 46, swivel arm 21 rotates with the axis of rotation of arm 22 around rotating shaft 33.Sub-arm 34 and 35 and drive cassette 41 between ejected position and placement location are ordered about in swivel arm 21 and 22 rotation.

When this guide gip was in curved portion 16c, two kinds are moved and rotate all was possible.Therefore, when this situation, two kinds of power path are transmitted the driving force of motor 50.For side by side not only moving frame 4 but also mobile tape card, driven wheel 19 and 73 following having determined of driving direction:

When driven wheel 19 drive chassis 4 forward the time, driven wheel 73 driven wheels 46 clockwise rotate;

When this driven wheel 19 drive chassis 4 backward the time, driven wheel 73 drives fan-shaped gears inhour and rotates, with cassette 41 on the original position that moves down into it.

Can see, under the superincumbent situation, between two kinds of motor patterns, gradually change in the distribution of driving force between driven wheel 19 and 73.For example: when motor rotates in one direction, drive chassis 4 moves forward, along with guide gip 49 angular velocity of driven wheel 19 when curved portion 16c moves forward descends gradually, this angular velocity reduces to null value when guide gip arrives the bottom 16b of vertical component at last.Again this while, the angular velocity of driven wheel 73 rises to its maximal value when this guide gip 49 reaches vertical component bottom 16b.On the contrary, when motor drove by opposite direction, when guide gip 49 arrived the front end of horizontal component 16a, the speed of driven wheel 19 rose to its maximum value gradually.Meanwhile, driven wheel speed decrescence when guide gip 49 arrives the front end of horizontal component 16a its speed be reduced as zero.

In the embodiment shown in the figures, this curved portion is so design: cause the perpendicular displacement that cassette takes place when cassette 41 is in video tape recorder shell 2 outside.This point that cassette 41 perpendicular displacements begin also is according to its position, promptly corresponds to the position that is referred to as second working position in Fig. 3 and 6.On this second working position, cassette must be on its placement location, carries out recording playback to allow videotape.

As previously mentioned, in accordance with the embodiments illustrated, frame 4 and cassette are controlled by means of same motor 50 and mechanical automated location and are operated.

One be applicable to recommended according to the embodiment of video tape recorder of the present invention with reference to Figure 12,13 and 19 are described in down.This video cassette 74 has the tape cassete shell 75 of a box-like structure.This tape cassete shell 75 has a forward open end, has a videotape 78 to pass near its openings at two ends 76 by openend.It top and below the front end of horizontal wall make and have otch 77, this corner cut makes and allows parts of loading mechanism to be inserted in the space of tape 78 back, cause with on the tape to the video magnetic head.

As is well known, a pair of tape reel 79 is placed in this tape cassete shell 75.Videotape 78 is wrapped on the tape reel 79.In Figure 19, only be that a supply reel or driving tep reel can be in sight.Though clearly do not illustrate among the figure-this tape cassete 79 is provided with the tep reel socket, it with video mechanism 10 in commentaries on classics tape spool device 11 and 11 ' on commentaries on classics take the lead 12 and 12 ' insert and be connected.For example, video cassette 74 has inserted cassette 41 and cassette 41 returns on its placement location, the tep reel socket that is associated in tape reel 79 inserted change take the lead 12 and 12 ', tape just has been driven thus.Videotape 78 promptly passes the front opening walking of opening 76 by dress carrying space the place ahead then, and its dress carrying space is limited by the otch on the lower wall on the tape cassete shell 77.

As shown in figure 19, the catch spring 80 of on tape cassete shell 75, having packed into.This spring 80 has flexibly limited tape reel moving with respect to the tape cassete shell.At stand-by state, this spring 80 makes tape reel press the upper surface of drain pan in the tape cassete housing, and in working order, this spring tape reel is pressed in change tape spool device 11 and 11 ' on, with the jack that guarantees tape reel and change tape spool head 12 and 12 ' between driving engagement.

A transparent window 81 is located on the top shell of tape cassete shell 75, and it is just in time facing to supply reel 79.How many tapes this transparency window 81 has demonstrated also is retained in the supply reel 79.At the lip-deep remainder of this shell 75 to stick trade mark (82) to make the usefulness of discriminating.

Uncap 83 before tape cassete shell 75 is provided with one, it is used for covering the forward part opening of tape cassete shell when magnetic tape cassette does not use.This lid 83 generally comprises a main part that covers the front opening of tape cassete shell 75, and pair of sidewalls part 83, and it vertically stretches out from the two ends of main part.Lid 83 rotates at sidewall sections 85 places, and it is used for the rotation between open position and the closed position: its main part is exposed tape 78 from the front opening turn-off of tape cassete shell on open position; Be positioned at the front opening part that is parallel to the shell upper wall in this body cover of closed position.

As can be seen, in the accompanying drawings, label 84 indicates and comprises tape channel, and its space on tape work space and the tape cassete shell fore-end is at interior preceding end spaces.

This lid 83 is installed in rotation on the fore-end of tape cassete shell 75 by means of the latch 86 that inwardly stretches out from sidewall sections 85.The rotation axis that this latch 86 is used as lid makes it move between above-mentioned closed position and open position.

There is one to buckle pin 87 and stretch on one of this latch 86 from latch.This latch 86 extend into the inside of tape cassete shell by the limit wall.So this pin button 87 is to stretch out from latch in box shell 75.A torsion spring 88 is wrapped on the latch 86.Button pin 87 is caught in an end of torsion spring.This torsion spring 88 has a cast part 88a, and it is on latch 86, and pillar 88b partly extends out and seat is pressed on the box shell top from cast, and second end 88c is annular, and it colludes on pin button 87.This torsion spring 88 is used as to lid 83 elastic force of pressing to the tape cassete shell is provided.Especially, this torsion spring normally provides clockwise elastic force to cover 83 and be in the close position to maintain to lid.

Lid 83 is provided with a pair of grooving mouth 89, and it is positioned at and covers main part near on the root edge on both sides.This grooving mouth design comes when lid 83 make-positions and a bossing seam of lid bottom cooperates.

Figure 12 and 13 has represented the lid 83 of a closure with solid line.On Figure 11 and 19, lid 83 is the make-positions that are represented by dotted lines.On the other hand, on Figure 11 and 19, lid 83 usefulness solid lines are represented to be shown in an open position.Lid 83 will with the cap-opening mechanism joint operation of video in the mechanism 10.This cap-opening mechanism will be described below.

For the insertion of the tape cassete in the preferred embodiment of tape vidio recorder of the present invention and eject and to contrast Figure 11 and explain.

In order to place magnetic tape cassette 74 in tape vidio recorder, at first be frame 4 and cassette 41 to be moved on to accordingly flick on the position.For being moved to, frame 4 and cassette flick on the position.Flick the position for frame 4 and cassette are moved to, motor will transmission on its conventional direction.This just makes frame 4 forwards shift out from video casing 2.When frame 4 moves, thereby swivel arm 21 is driven by fan-shaped gear 46 and has driven swivel arm 22 sub-arms 34 and 35, and moves on on the position shown in dotted lines in Figure 11 on the cassette.

On this position, this magnetic tape cassette 74 can be inserted into and be gone in the cassette 41.Especially, cassette is provided with locating device, and it is used for the location of video cassette 74 at cassette 41.After the video cassette recording tape is inserted in the cassette 41, the opening on the tape cassete drain pan 75 be aligned in opening 44 and 44 on cassette 41 base plates 42 ' on.The upper surface of compressing tablet 45 and video cassette contacts and limits the motion of tape cassete 74 in cassette.

With magnetic tape cassette 74, flicking of cassette put on the position go in the cassette after, a button in the button groups on the plate is pressed in front.As the reaction that this button is pressed, this motor moves upward its negative side.Its result is, when guide gip 49 cassette when the vertical component 16b of guide groove 16 moves is reduced on its placement location.After when the preceding upper end of guide gip 49 arrival curve part 16c, this frame 4 begins to turn to be returned.Motor 50 continues operation drive chassis 4, is at magnetic card on the frame 41 on its placement location in order to carry out the selection of first or second working position.

Just in time before cassette moves to extreme lower position, cassette 41 near register pin 13 and 13 '.These register pins 13 and 13 ' entered separately in the pilot hole of the correspondence on video cassette are so that tape cassete is accurately located with respect to the video mechanism 10 on the frame.In the case, register pin 13 in front touches on the bottom surface of video cassette.On the other hand, the vertex of a cone 13a ' of the register pin of back be parked in tape cassete 74 bottom surfaces register pin 13 ' table top the time, just enter in the pilot hole of tape cassete 74.Its result be video cassette 74 accurately in vertical direction, longitudinal direction, on the transverse direction with respect to the video mechanism be positioned.

The bottom surface of tape cassete 74 and register pin 13 and 13 ' the top between contact just stoped cassette 41 and sub-arm 34 and 35 to continue to move downward.Therefore, afterwards, only be swivel arm 21 and 22,, when reaching the front end of guide groove horizontal component 16a, guide gip 49 can continue to be pivotally lowered on its reference position according to the rotation of fan-shaped gear 46.Tape cassete 74 and corresponding cassette 41 and swivel arm 21 usefulness solid lines are illustrated among Figure 11.Because pin 27 and 28 is in the degree of freedom in the vertical slotted hole 38 of sub-arm 34 and 35, swivel arm 21 and 22 is allowed to continue to move downward.On Figure 11, the degree of freedom of the relative motion between distance≤represented swivel arm and the corresponding sub-arm.

When swivel arm 21 and 22 and sub-arm 34 and 35 between relative displacement when increasing, compression spring 40 and 40 ' spring force also increased.This spring force downwards via sub-arm 34 and 35 and cassette video cassette 74 is pressed in the cassette.This downward strength impels video cassette 74 to shift to video mechanism 10.This just helps to keep tape cassete 74 to be in securely in the video mechanism 10.

When cassette 41 was arranged to placement location, frame 4 moved to second working position shown in the solid line among Figure 11 unceasingly.

On the contrary, video cassette 74 by At time of eject, an ejector button in one group of button on its panel is depressed.Reaction after this ejector button is depressed is, motor 50 turns to driving with routine, by driven wheel frame 4 driven forwards on its ejected position.When this frame 4 moves to the place ahead, when guide gip 49 reaches its curved portion 16c after, this fan-shaped gear 46 is driven gear 73 and drives.Therefore when this guide gip 49 had arrived curved portion 16c, the driving force of motor 50 was used to make driven wheel 73 to drive fan-shaped gear 46.Its result is that this fan-shaped gear 46 rotates, and has promptly caused relatively rotating of swivel arm 21 and 22.With the rotation of swivel arm 21 and 22 correspondingly, sub-arm 34 and 35 and cassette 41 shift on the ejected position of the place ahead.This sub-arm 34 and 35 and the rotation of cassette 41 in the very short time, finish, at this moment sell 27 and 28 and upwards move on to the upper end of this slotted hole along vertical slotted hole 38.At pin 27 and 28 during near the top edge in holes 38, swivel arm 21 and 22 driving force are applied directly to sub-arm 34 and 35.

This fan-shaped gear 46 has driven sub-arm 34 and 35 by the rotation that motor 50 produces, and reaches cassette 41 and moves up to ejected position, and guide gip 49 has arrived the upper end of the vertical component 16b in the guide groove 16 in the time of on this position.On this ejected position, tape cassete can move in cassette.

Also have a device for releasing closures on this frame 4, be used for opening the lid 83 of video cassette 74.The structure of this device for releasing closures and effect will be described below according to Fig. 7 and 11 to 13 again.

The member 90 of uncapping laterally extends in the top of cassette 41.This member 90 of uncapping has a pair of swivel arm 93 vertically to extend out from the two ends of main part 91.This tumbler 93 is installed on two sidewalls that face toward 43 of cassette 41 and rotatably near the rear edge of tape cassete position.Therefore the member 90 of uncapping can rotate between the primary importance and the second place around the turning axle of tumbler 93; Vertically being positioned at also joining in this main part 91 on the primary importance shows as Figure 12 and 13 on the rear end of cassette 41; This main part 91 on second position place abreast cassette 41 above, as shown in Figure 7.

Main part 91 is for making the sheet material of a strip, the matched of the sidewall 43 of its width and cassette 41.

On first above-mentioned position, the coboundary 92 of main part 91 is close together with the upper limb of cassette 41 sidewalls 43.Shown in Figure 12 and 13, the upper part of main part 91 is stenosis gradually by the place ahead to top edge 92.This top edge 92 is a little forwards to extend out.

This swivel arm 93 is having through hole 94 near on the free end.This hole 94 with do rotation from the pivot pin that stretches out in appearance of cassette sidewall 43 and cooperate.This swivel arm also is subjected to the effect of an elastic biasing means, comprises a torsion spring 96 in this device.This torsion spring has a cast part on pivot pin 95.An end 96b of this torsion spring 96 is seated in from the projection 97 of the inside surface of the swivel arm 93 of the member 90 of uncapping.The other end 96c of its torsion spring 96 is seated in the stretching out on the sheet 98 of sidewall 43 of cassette 41.The feasible member 90 of uncapping of this torsion spring is pressed on the above-mentioned primary importance by the clockwise direction of showing in the accompanying drawing.

The a pair of arm 99 that colludes is arranged on two ends of main part 91.These collude arm 99 and longitudinally stretch to the place ahead from the lower limb of main component 91.These collude following the choosing of longitudinal length of arm 99: though they can joining on the lower limb of the lid 83 of video cassette 74, or make the bottom margin joining of they and sidewall sections after in the cassette all inserting tape cassetes at least.

This roller pin 95 is stretched its position from the sidewall 43 of cassette 41 and is so decided: even the rotating shaft heart of the latch 86 of its axle center and lid 83 is consistent, show that as Figure 12 at this moment tape cassete 74 is in giving on the allocation corresponding to cassette 41.

Under this structure, 99 joinings of hook arm are perhaps covered on 83 the sidewall sections 85 on lid 83 root edge, and the member 90 of at this moment uncapping turns to the second place from its primary importance, shown in the arrow among Figure 12.So, to be handled at the member 90 of uncapping and to be opened when cover, lid 83 is and the member 90 of uncapping forwards on its open position together.

Cover opening mechanism also comprises an operating rod 100, and it is assembled on the frame 4, shown in Figure 11 and 13.100 designs of this operating rod are used for handling the member 90 of uncapping and proceed to the second place from primary importance and cause lid to be opened.It is the bar of a L shaped shape that this operating rod 100 Gai draw together, and a upper part 101 is longitudinally arranged on it.The coboundary of this upper part 101 tilts to free end.This operating rod is located on frame 4 like this, and promptly cassette is when ejected position moves to placement location after tape cassete 74 has inserted in the cassette 41, and operating rod will enter with the bottom surface of the structure arm 99 of the member 90 of uncapping and contact.

This operating rod 100 itself is a fixture, is not that vertical direction moves and opens lid., when cassette with respect to frame 4 vertical direction when ejected position moves on to placement location, its promote to uncap hook arm 99 of member 90 is because the displacement of its relative cassette moves up hook arm 99.Its result is, when cassette 41 when ejected position moves on to placement location, lid 83 can automatically be opened.

When above-mentioned when operation of uncapping, the strength of torsion spring 88 increases gradually.On the open position of lid 83, the power of torsion spring 88 be applied to cause on the tape cassete shell 75 shell with respect to frame 4 to external pressure, on the other hand, the rotating shaft of member 90 coincides with the rotating shaft of covering 83 basically owing to uncap, and run-on point is partial to the top at center on the sidewall vertical direction a little, and the power that acts on the member 90 of uncapping has comprised the inwardly square component of setovering of lid 83 that makes uncap member and tape cassete 74.The component of the inside biasing of this power of uncapping and act on outside bias force on the tape cassete to keep tape cassete regularly on its position.

On this position, the front end of video cassette is opened, allow to drive band mechanism enter cause in the space that the otch 77 by tape cassete determined tape the tape guiding elements in the fixed tape track route against on magnetic head.

The preferred arrangement of button key group on panel 3 described hereinafter with reference to Fig. 1 to 3.The operation of known video cassette is carried out in the permission of button in these key button groups, comprise video, put resemble, fast forward, oppositely rewind, the control of recording playback sound etc.

This button groups comprises mode selector button 102b, 102c, 102d and 102e.These mode selector buttons are pressed when the corresponding working method of video tape recorder need be selected.Mode selector button among the video tape recorder embodiment that is recommended according to the present invention can also be with so that frame 4 moves on to first or second working position from flicking the position.Be, when frame 4 when flicking the position, motor 50 by starting come drive chassis from flick the position move on to first or the second place any on.

Mode selector button 102a is one to be put and resembles the mode selector button, and it is used for starting one at a system controller and puts the mode of elephant, and this system controller illustrates hereinafter.Working mode selection button 102b is one and rewinds mode selector, mode selector button 102a is the mode selector button that fasts forward, mode selector button 102d is a video mode selector, and 102e is a stop button, and mode selector button 102f is a suspended pattern selector switch.This is put and resembles mode selector 102a, rewind mode selector 102b, forward (FWD) mode button 102c and video mode selector 102d also can be used to start this system controller fast, drive motor 50 with frame 4 on ejected position moves on to first and second positions one.For example, if button 102a, 102b, 102c has one to be pressed among the 102d, and at this moment frame is on ejected position, and mode is selected to shift to the working position with frame and is performed simultaneously.

This button groups has also comprised an ejector button 103.When frame 4 is in the working position one, press this ejector button, then started system controller drive motor 50 moving frames 4 to ejected position.Button 104 is that a choice of location button is used for no matter selection is first working position or second working position.These position selector 104 start-up system controllers come to the corresponding position, working position of existing choosing with operation frame 4.For example, if frame 4 is in first working position, this system controller has been handled motor 50 moving frames to second working position, and is corresponding with the operation of depressing working position selector switch 104.On the contrary, when frame 4 was in second working position, frame 4 can be got back on first working position when pressing working position selector switch 104.

This button groups also comprises a power switch button 105.This power switch 105 also is the flip-over type switch between a switch power supply and the pass power supply.This power switch 105 also has following function: when frame Push switch during first working position outside, also be that frame is to press this switch when being in the ejected position and second working position, system controller starter motor 50 moving frames 4 to first working positions at first then, at the panel opening 5 of video tape recorder during by panel 6 sealings movably, this system is cut off power supply and turn-offs then.

This button groups does not yet have a channel selector 106 and a clock display.In addition be used for function buttons such as timer, the selection of non-productive operation mode, and other some buttons and tape travel display can be added on the panel as requested.

Ginseng is to Figure 14, and the structure of system controller 200 now will be described in down with illustrating.

Gai draws together speech, and system controller 200 comprises in one to be had: CPU204, RAM206, the microprocessor of ROM208 and input/output interface 210.ROM has the program storing memory piece of a Figure 15 to 18, and it is described below.

The other element of system controller 200 illustrates in the time of will carrying out the procedure operation of Figure 15 to 18 along with system controller again.

Figure 15 represents one to the control program figure according to the control operation of aforesaid video Cassette recorder equipped preferred embodiment of the present invention.This control program will repeatedly be performed after power switch closes.Immediately, video cassette is by the existence that detects it by means of a tape cassete detecting device 212 in piece 1002 after starting this control program.This tape cassete detecting device can be assembled in the cassette 41.Whether detection signal of tape cassete detecting device 212 outputs exists in cassette 41 with the indication tape cassete.When tape cassete 74 be positioned at cassette give allocation the time, this detection signal level is for just.Therefore, in piece 1002, checking is to finish by means of checking of detection signal level.When detecting a high level detection signal in piece 1002, the existence of tape cassete 74 in cassette has promptly been approved.The operation of ejector button is checked with piece 1004 then.If ejector button 103 is not pressed when piece 1004 is checked, mode selector button 102a, 102b, 102c, 102d, the operation of 102e and 102f will be checked in piece 1006.If one or more mode selector buttons has been pressed, operating in the piece 1008 of corresponding selection mode finished, and control is back to piece 1002; Otherwise control directly is back to piece 1002.To narrate below corresponding to the control example that mode in piece 1008 is selected.

On the other hand, if detection signal level is low when checking in piece 1002,, tape cassete 74 just do not approved so existing in cassette 41.The operation of ejector button 103 is checked in piece 1010 again again.As mentioned above, because video cassette 74 only just can be inserted into when frame 4 and cassette are positioned at its ejected position, if ejector button 103 is not pressed, program is depressed until ejector button 103 in piece 1010 cocycles, in other words, this video recorder system is to be in " stand-by state ".

Ejector button 103 be pressed and ejector button depress in piece 1010 detected after, then carrying out an ejection operation behaviour system subroutine in piece 1012 will explain with reference to accompanying drawing 16 below.

This ejection operation control program moving frame 4 and cassette 41 to ejected position is inserted among the cassette 41 to allow a video cassette.Controlled from ejection operation be back in the piece 1012 program after, the tape cassete detection signal level is checked in piece 1014 again.In other words, on the ejected position of frame 4 and cassette 41, video tape recorder is in one and places the tape stand-by state.This program circulates in piece 1014 and carries out, and just ends circulation when a noble potential detection signal is measured.After a noble potential detection signal is checked in piece 1014, mode selector button 102a, 102b, 102c, 102d, the operation of 102e or 102f is checked in piece 1016 again.In the case, video recorder system is in the stand-by state that a kind of mode is selected, and the check in the piece 1016 at this moment repeats.Until mode selector button 102a, 102b, 102c, 102d, after being pressed one of among 102e and the 102f, this stand-by state no longer continues.

React in order to one in the mode selector button is pressed, a frame drive control signal CS exports from this system controller, so that drive motor in piece 1018 causes promptly that with such running that turns to frame is shifted to rear first or get in second working position.After frame 4 was regained, cassette 41 was moved on its placement location to place in the video mechanism 10 of video cassette to the frame.When the recovery operation of piece 1018 mid frames 4 is finished, frame will one in first and second working position on.If the working position is not the position of wishing, the user will depress working position selector switch 105 and change the working position so: promptly change to second working position from first working position, or move on to first working position from second working position.In order to stop frame on first required or the second place, rack position sensor 214 is installed in the stroke near frame.This position transducer 214 can produce has the shelf position indicator signal relevant with shelf position, also, and corresponding ejected position, first working position and second working position.On the other hand, system controller has a block of memory 216, and it is used as flag register in RAM204, is used to keep a Q-character signal FL _PosSignal FL _PosBe set promptly indicate by working position selector switch operation selected be second working position.Second place indicative character position signal FL _PosTo be reset, to respond the next output signal of being sent here from position selector 105.

After frame 4 being moved on to desired first or second working position, whether this system will check video cassette and tie up in the frame and accurately be positioned according to giving fixed pass with respect to video mechanism in piece 1020.In order to check this above-mentioned condition, it is to appear on the correct placement location in frame 4 that tape cassete set sensor 218 is installed on the frame 4 in order to sensing tape cassete 74.This tape cassete set sensor 218 produces a high level tape cassete position signalling S when tape cassete accurately is placed on the frame 4 with respect to video mechanism 10 _CasPiece 1020 detect a high level tape cassete position signalling that sends by tape cassete set sensor promptly stop later on the circulation.At a high level tape cassete position signalling S _CasDetected back control signal is issued piece 1022 in piece 1020, adorns ribbon gymnastics therein and is done, and for tape being added on the video tape recorder magnetic head, this system controller 200 sends one and adds translator drive control signal CL and pass to and add translator 220.As long as when always this drive control signal CL that adds translator and always driven-add translator is in high level.In piece 1024 detected add ribbon gymnastics and finish after, this adds the translator drive signal level and does not just keep high level.Finished in piece 1024 the band process, the level step-down that adds the drive control signal of translator is ended the driving that adds translator 220 on piece 1026.

Afterwards, in piece 1028, utilize the position of checking frame 4 with reference to the sensor signal value of rack position sensor 214.Be appreciated that motor 50 is on-stream constantly when doing through whole dress ribbon gymnastics.Therefore frame 4, that continues in piece 1022 is passed to the implementation of piece 1028 shifts to the rear.

When piece 1028, the position indicative signal S of frame _PosWhether checked with check and indicate: frame has reached second working position.When frame 4 had been passed through second working position, the self-loopa of piece 1028 just came to an end.When frame move backward passed through second working position and be detected after, the operation of the mode of having selected in piece 1016 in piece 1030, just begins to carry out.Even in piece 1030, begun after the operation of selected video tape recorder working method, motor 50 still unceasingly drive chassis 4 arrived first working position until the latter backward.After frame arrives first working position during at piece 1032, then at piece 1034 upper spider drive control signal CS step-downs.Its result is that on first working position, motor 50 stops drive chassis 4.At last, piece 1002 is returned in control, so program will be by piece 1002-1006 circulation, till the ejection switch is pressed.

Figure 16 represents that ejection operation controlled program, the execution in piece 1012.After program has been controlled in this ejection operation of startup execution, on piece 1012-1, check once more again at the measuring-signal that spreads out of on the tape cassete detecting device 212.If when on piece 1012-1, detecting the high level detection signal, checked on piece 1012-2 from the shelf position indicator signal of rack position sensor 214, to check that frame is whether on second working position.If frame is on second working position, adds belt controling signal CL by system controller output and passed to by system controller and add translator 220 so that on piece 1012-3, band is unloaded.Whether finish unloading of piece colonel 1012-4 nuclear inspection tape.Check operates in piece 1012-4 and upward repeats to stop up to being with all to unload.After, frame drive control signal drive motor 50 on piece 1012-5 of being exported by system controller 200 drives frame to ejected position.Frame is moved toward the place ahead till frame arrives ejected position.Shelf position transducing signal S _PosOn piece 1012-6, checked.This program is having self-loopa to end when frame 4 arrives ejected position on the piece 1012-6.After frame arrived ejected position, frame drive control signal CS had just stopped travelling forward of frame on piece 1012-7.

On the other hand, when checking out frame 4 when being in certain position that is different from second working position in piece 1012-2, control is passed on the piece 1012-8, checks shelf position indicator signal S therein again _PosTo check whether frame 4 is on the ejected position.If frame is to be on the ejected position, then control is returned on the primary control program of Figure 15.

If frame is to be on other position that is different from ejected position, on piece 1012-8, checked out, in other words, if frame is on first working position, the frame drive control signal is starter motor 50 on such direction, promptly cause frame forward, this drive control signal is exported on piece 1012-9.After starting the travelling forward of frame, at once or simultaneously, add belt controling signal CL, when piece 1012-10, outputed to by system controller 200 and to add on the translator 220, cause tape to be unloaded down from video mechanism 10.Then, piece 1012-11 checks and checks whether unload band finishes.Piece 1012-11 repetitive operation is ended when ribbon gymnastics is finished up to unloading.Unloading after ribbon gymnastics finishes, on piece 1012-12, stopped unloading belt controling signal CL and stopped adding translator 220 to cause.After piece 1012-12, control is added on the foregoing 1012-6.

After foregoing 1012-7, control on the master routine that turns back among Figure 15.Figure 17 represents that is selected in first or second working position, with the program of the operation of responsive operation position selector 105.This program can be performed as pressing the interrupt routine that working position selector switch 105 starts.

After starting execution, the frame position is the shelf position indicator signal S that is utilized in piece 1102 with reference to coming from rack position sensor _PosCheck.When if frame 4 is on first working position, piece 1104 is passed in control, and frame drive control signal CS is output and is used for drive chassis 4 and travels forward thereon.This shelf position is checked the check frame and whether has been arrived second working position on piece 1106.Piece 1106 is repeatedly checked when frame arrives second working position and is just ended.After frame arrived second working position, frame drive control signal CS was terminated at piece 1108.So frame 4 moves on to second working position from first working position on piece 1104-1108.

On the other hand, if when checking, realize frame 4 on second working position on piece 1102, control makes piece 1110, this frame drive control signal export drive chassis thereon backward to first working position.When frame 4 was moved backward, shelf position was utilized in piece 1112 with reference to the shelf position indicator signal S that comes from rack position sensor 214 _PosRepeatedly checked.After frame arrived first working position, control was passed to piece 1108 to cut off the frame drive control signal.

After piece 1108, control on the primary control program that turns back among Figure 15.

Figure 18 represents a program that is turned off power initiation.When the program of Figure 18 was carried out in starting, shelf position was utilized on piece 1202 with reference to the shelf position indicator signal S that comes from rack position sensor 214 _PosChecked.If when checking on piece 1202, frame 4 is in first working position, power supply promptly is interrupted on piece 1204.On the other hand, be different from first working position if frame is in, on piece 1206, frame drive control signal CS is output drive chassis and moves rearwards on first working position.After actuating motor 50 drive chassis 4 were moved backward, control turned back to the position that piece 1202 goes to check frame, and piece 1202 and 1206 circulation repeat, and arrive just termination on first working position until frame 4.After frame reached first working position, piece 1304 was passed in control, and power supply is turned off thereon.

Although the present invention at length discloses in the mode of the special embodiment of the present invention, the present invention should be considered to be the possible of multiple different embodiment.Also promptly, disclosed special embodiment can change when not departing from principle of the present invention in many ways more than.Therefore, the present invention should be understood as that and comprise all possible in principle embodiment that proposed and to the change of institute's preferred embodiment in attached claims around all.

Claims (16)

1, a kind of tape vidio recorder includes: a video tape recorder shell, a frame, the video mechanism that resembles usefulness for recording playback is installed thereon, described video mechanism is suitable for admitting a kind of video cassette, in video cassette, include and be used as the videotape that the video matchmaker separates, it is characterized in that: described frame can be between the primary importance and the second place horizontal ground motion, on its primary importance, frame is stretched out from described video tape recorder shell to admit described video cassette; Its second place is positioned at described casing inside, and the video mechanism that is used to record and play elephant at the above videotape of this position admits.

2, at the tape vidio recorder described in the claim 1, it is characterized in that: a guide piece and described frame fit together, and be parallel to described video tape recorder shell and flatly extend, this device is used for the described frame of guiding between described first and second positions.

3, the tape vidio recorder described in claim 1 or 2, it is characterized in that: a cassette is placed in and is used on the described frame moving together with the latter, described cassette is to move between the primary importance and the second place with respect to described frame, and the above the front end of cassette of its primary importance tilts from described frame upward; This videotape is admitted so as to making described video mechanism in the top that is positioned at described frame at the above cassette of its second place.

4, the tape vidio recorder described in the claim 3 is characterized in that: connect this described tape like this and snap into device on the described frame, promptly it make this described cassette according to the motion of described frame the 1st and the second place between move.

5, according to the tape vidio recorder described in the claim 4, it is characterized in that: described adapting device is operated this described tape and is snapped on its primary importance when described frame is in its primary importance, and operates described tape snap on its second place when described frame is in its second place.

6, according to claim 2 described tape vidio recorders, it is characterized in that: described frame also can move on on one the 3rd middle position of the described primary importance and the second place, the part of the frame of the above is stretched out from described video tape recorder shell in this position, and this videotape is admitted by this video mechanism that this is used to record and play vision signal.

7, according to claim 6 described tape vidio recorders, it is characterized in that: a cassette that is placed on the described frame is used for moving with the latter, described cassette is to move between the primary importance and the second place with respect to described frame, and the above cassette front end of its primary importance tilts from described frame upward; This videotape is admitted so as to making described video mechanism in the top that is positioned at described frame at the above cassette of its second place.

8, according to the tape vidio recorder of describing in the claim 7, it is characterized by: connect this described tape like this and snap into device on the described frame, promptly it can make this described cassette move between first and second positions according to the motion of described frame.

9, according to claim 8 described tape vidio recorders, it is characterized in that: described adapting device is operated this described tape and is snapped on its primary importance when described frame is in its primary importance, and operates described tape snap on its second place when described frame is in its second place.

10, according to the tape vidio recorder described in claim 5 or 9, it is characterized in that: one first driving mechanism and described frame are fitted together and are used to drive described frame and can reciprocally reach backward forward along described guide piece.

11, according to the tape vidio recorder of describing in the claim 10, it is characterized in that: one second driving mechanism and described cassette fit together, to the latter it primary importance and the second place between operate.

12, according to the tape vidio recorder of describing in the claim 11, it is characterized in that: described first and second driving mechanism has a public drive motor.

13, according to the tape vidio recorder of describing in the claim 12, it is characterized by: described public drive motor links together via one first transfer gear train and described first driving mechanism, and link together via one the 2nd transfer gear train and described second driving mechanism, the operation that described first and second transfer gear train is coordinated be used for transmitting selectively driving force to described first and/or second driving mechanism again as driving described frame and described cassette selectively.

14, according to the tape vidio recorder of describing in claim 5 or 13, it is characterized in that: can manually operated button be used for controlling the operation of this tape vidio recorder, described button comprises at least: an operation-mode selector button, start a video tape recorder operation by it, described working mode selection device button also starts described drive motor and operates described frame and described cassette.

15, according to claim 14 described tape vidio recorders, it is characterized by: described button comprises that one flicks button in order to start described driving, and it drives described frame forward to described primary importance and operate described cassette to described primary importance in order to drive this motor.

16, according to the tape vidio recorder described in the claim 14, it is characterized by: system controller is controlled the operation of described drive motor and described video mechanism, described system controller comprises: a first sensor, its be used for detecting described cassette described tape cassete existence or do not exist, one second sensor is used to detect the position of described frame, described system controller and described button be associated to be used for control operation, and this operation is based on the mode of operation of described video mechanism of first and second sensor signals that transmit from the described the 1st and second sensor and selection.

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