JP3387192B2 - Tape cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a novel tape cassette.
Related. For details, cover the recording medium tape when not in use.
A cover for protecting the recording medium tape with the cover;
A part that regulates the position of the lock member that locks to the closed position
By devising the formation position of the material, miniaturization is possible.
New tape cassettes.
You. [0002] 2. Description of the Related Art Recording medium tapes such as magnetic tapes
Formed on the front of the cassette case consisting of upper and lower halves
Take the part located along the front of the tape
Lid to open and close the relevant part of the magnetic tape for protection
Is provided. FIG. 1 shows an example a of such a tape cassette.
1 and FIG. [0004] b is a flat box-shaped cassette case.
The upper half c and the lower half d divided into two
It is formed by being butt-coupled up and down. At the approximate center of the front of the cassette case b,
A concave part e called a mouth part opened forward and up and down is formed.
Have been. A tape (not shown) is placed in the cassette case b.
The magnetic tape f wound around the reel is stored, and the magnetic tape
A part of the loop f is led out of the cassette case b and is not used.
Sometimes it is located along the front of the mouse part e. G is outside the cassette case b of the magnetic tape f.
To cover and protect the derived parts when not in use
It is a lid, and it consists of a front lid h and a back lid i.
Become. The front lid h is on the front side of the magnetic tape f.
Front part j covering the front side and projecting rearward from both side edges of the front part j
Side k, k (only one side k is shown in the drawing.
is there. ), And the side surfaces k, k are protruded with the rotation axes l, l.
Has been established. On one side surface k, a spring hook projection m is provided.
Is protruding. [0010] The front lid h is a pivot shaft thereof.
l, l are formed at the front end of the side wall of the cassette case b.
Is rotatably supported by the support hole. N is a torsion spring, and its coil portion
o is externally fitted to the one rotation shaft l, and one arm piece p is
It is in elastic contact with the spring hook m from above. And the
The other arm piece q of the spring n
I'm in tandem. The back lid i has a plate-shaped main part r and the main part r.
A top plate portion s integrally formed at an upper end of the portion r;
The part slightly lower than the middle position in the vertical direction on both sides of r
Minute pivots to the inside of the front part j of the front lid h
Supported. T, t (only one t is shown in the drawing)
is there. ) Protrudes rearward from the lower ends of both side edges of the main part r.
The projections t are guided on the outer surface of the rear end of the projection t.
Pins u and u (also shown in the drawing only one u)
You. ) Is protruding. Then, the guided pins u, u
Are formed on the inner surfaces of the mouth portion e facing each other.
It is slidably engaged with a guide groove (not shown). V is a lock for closing the cover g to the closed position when not in use.
Locking member for locking
The upper end is one side of the cassette case b.
The part is rotatably supported. The upper end of the lock member v slightly projects rearward.
An extended spring hook w is formed, and the spring hook w
The other arm q of the torsion spring n is elastically contacted from above.
are doing. As a result, the lock member v has the configuration shown in FIGS.
Turning power in the clockwise direction as viewed in FIG.
Force is applied in the direction in which the
As a result, the engaging portion of the lock member v flows
And an engagement portion formed on one side surface k of the lid h.
To lock the front lid h in the closed position
Become. The tape cassette a is used for recording and reproduction.
When mounted on the device, the lock provided on the recording / reproducing device
The unlocking member x moves the lower end of the locking member v relatively rearward.
Pressing, the engagement portion of the lock member v and the front lid h
Since the engagement with the engagement portion is released, the lid g is moved to the open position.
In a movable state. Then, the tape cassette a is inserted into a predetermined cassette.
When moving down to the mounting position,
The lid opener (not shown)
Abut on the lower edge of one side surface k of the head h
Since it is pressed relatively upward, the front lid h
Is directed upward against the rotational power of the torsion spring n.
And the back lid i is also the front lid h
Of the rotation fulcrum supported by the shaft and its guided pins u, u
While the posture is controlled by the guide by the guide groove,
To reach the open position shown in FIG. Thus, the mouse portion e of the magnetic tape f
The part located along the front surface is opened. Y, y (only one y is shown in the drawing
is there. ) Is the position near the front edge of the lower edge of the side wall of the upper half c.
A substantially semicircular notch formed in the front lid
For forming a support hole for supporting the rotation axis l of the door h
It is. Z is the above notch in one side wall of the upper half c.
At the lower edge of the outer surface at a position behind the position where y was formed
It is a stopper portion protruded. Thus, the lid g is made up of the upper half c and the lower half c.
It is temporarily fixed to the upper half c before the half d is joined.
You. That is, the front lid h and the back lid i
Of the front lid h
The coil part o of the torsion spring n is fitted around one of the rotating shafts l.
And one arm piece p is in elastic contact with the spring hook projection m.
The rotation shafts l, l engage with the notches y, y of the upper half c.
And the other arm piece q of the torsion spring n is stopped.
And is elastically contacted with the upper part z from above.
l is urged upward by the moving force,
l, l are in contact with the notches y, y and the lid g is in the upper half c.
It is temporarily stopped. The lock member v is temporarily fixed to the lower half d.
Is done. Then, the upper half c and the lower half d are joined.
The other arm q of the torsion spring n
When the set case b is assembled, the lock member v
The spring hook w is positioned higher than the stopper z.
To elastically contact the spring hook w of the lock member v from above.
Lock member v toward the lock position, that is, FIGS.
The clockwise turning power at 12 is energized. I
However, in this state, the lock member v rotates clockwise more than necessary.
To the front lid h
Finally, it cannot be assembled. As described above, the tape cassette a
Is attached to the recording / reproducing apparatus, the unlocking member x
The lower end of the lock member v is pressed backward by the
g is unlocked.
The release member x holds the lock member v at the lock release position.
If there is no problem, otherwise, the lock member v
The cover g has returned to the closed position,
When you come, you will not be locked. Therefore, the abutting portion α is attached to the front edge of the lock member v.
And the abutting portion α is positioned below the stopper portion z of the upper half c.
So that it does not rotate further clockwise
I have to. [0027] By the way, the above-mentioned subordinate
In the conventional tape cassette a, the rotation fulcrum of the lid g
A stopper z is provided between the lock member v and the rotation fulcrum.
Need to be formed, and the formation position is torsion spring n
The other arm piece q can be temporarily fixed and the lock member v
The position is limited to a position where the contact portion α can contact. Therefore, when promoting miniaturization, this strike
The space for forming the upper part z is a dead space.
And disadvantageous for miniaturization.
There is a problem. [0029] SUMMARY OF THE INVENTION The tape cassette of the present invention
Has a flat box shape to solve the above problem
A part of the recording medium tape stored in the cassette case
Guided out to the front of the cassette case,
Protect parts located outside the cassette case when not in use.
Closed position to cover the recording media tape when the lid is not used
If it hinders the use of recording media tape during installation and use
Cassette cassette so that it can rotate freely between
A tape cassette provided on the front of theThe above lid
Indicates the front lid that covers the front side of the recording
A back lid covering the rear side and the lower side of the recording medium tape,
A top lid that covers the upper side of the recording medium tape,
The upper half which divides the above-mentioned cassette case into two
The lower half and upper and lower are joined together in a butt shape to formUp
The top lid is inserted into the guide groove formed in the upper half.
Slidably engaged,Put the lid in the closed position when not in use
The lock member to be locked is locked with the lock position for locking.
Rotate between the unlock position to release the lock
To the cassette case and turn the lid to the closed position
The locking member is locked by a resilient member
To the lower half.Side wallNisu
Form a topper section and rotate the lock member toward the locked position.
When the lock member movesFormed to protrudeAbutment
Is in contact with the stopper and the lock member is turned more than necessary.
The movement is prevented. [0030] Therefore, in the tape cassette of the present invention,
Lock memberFormed to protrudeThe contact area where the
Lower half of topperSide wall, So that
As compared with the case where the stopper is provided on the upper half
Minimizes dead space, hinders miniaturization
Never be. In addition, extra rotation of the lock member is prevented.
To enable automatic assembly and pivot to the lock member.
The urging of the force and the urging of the rotation to the lid are performed by a common elastic member.
By reducing the number of parts
Needless to say, labor saving in assembly can be achieved. [0032] DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the tape cassette of the present invention are shown below.
A description will be given according to the embodiment described above. In the illustrated embodiment,
The present invention is applied to a video tape cassette 1.
You. Reference numeral 2 denotes a cassette case, which is horizontal when viewed in a plane.
It is formed in a thin rectangular box shape having a long rectangular shape. In the cassette case 2, both magnetic tapes 3
Tape reels 4, 4 with their ends fastened and wound separately
Is rotatably housed. 5 is located at the center of the front of the cassette case 2.
The concave part called the formed mouse part, front, upper
And open downward. Reference numerals 6 and 6 denote upper portions of the front surface of the cassette case 2.
This is a tape outlet formed at both sides of the mouth part 5.
At the inner ends of the tape outlets 6 and 6 on the mouth 5 side, insert a cassette.
Guides 7, 7 are formed in the slot. However, a part of the magnetic tape 3 is taped.
Drawn out of the cassette case 2 from the
When the cassette 1 is not used, the guides 7, 7 in the cassette are used.
Along the front of the mouse unit 5 with the
Is located. The above-mentioned cassette case 2 is vertically
Two upper and lower halves 8 made of synthetic resin divided into two parts,
9 are formed by being butt-coupled up and down. The height of many parts including the side wall of the lower half 9
The cassette case should be aligned with the corresponding part of the upper half 8.
In order to obtain the required height for each part of
About half the height required for each part of the base 2
Although it has, the part 1 corresponding to both side walls of the mouse part 5
The height of 0, 10 is required for the relevant part of the cassette case 2.
The mouse part is formed at a height substantially equal to the required height.
Substantially semi-cylindrical shape on the side of the tape exit 6, 6 of the side walls 10, 10.
Guides 7, 7 are integrally formed.
You. The mouse on the side walls 10 and 10 of the mouse section
The gas that extends in a gentle S-shape in the vertical direction is
Id grooves 11, 11 are formed. 12, 12 are the front and rear of the bottom wall 13 of the lower half 9.
Facing left and right at the approximate center in the direction
Holes, the lower ends of the reel hubs of the tape reels 4 and 4
This is for allowing the portion to face outside the cassette case 2. 14 and 14 'are provided on the bottom wall 13 of the lower half 9.
Is a reference hole formed so as to open on the lower surface of the. Front end 1 of side walls 15, 15 of lower half 9
6, 16 are located offset inward from the rest
And approximately center in the front-rear direction of the side wall front end portions 16, 16.
The remaining portion between the portion between
Projections 17, 17 and 18 formed slightly higher than the part
Is formed. The front projections 17, 17 are
Large U-shaped cutouts 19, 19 opening at the upper edge are formed
Also, the rear protruding portion 18 is opened at its upper edge.
A small U-shaped notch 20 is formed. At the rear end of the front end 16 of the right side wall 15
Forward from upper half of outer end of continuous bent portion 15a
A cover 21 projecting toward the cover 21 is provided.
Is positioned so as to cover the protruding portion 18 and the portion below it.
And a narrow space 22 is formed between them.
Further, the upper end of the cover 21 faces the notch 20.
U-shaped recesses opened at the facing surface and the upper edge
21a are formed. And, of the bent portion 15a
The upper edge 15b comes into contact with the abutting portion of the locking member described later, and
It serves as a stopper for restricting the rotation of the locking member. The front end 2 of the side walls 23 of the upper half 8
4, 24 are positioned offset inward from the rest
I have. The front edge of the side wall front ends 24, 24
A small arc at a position slightly forward from the center in the backward direction
Notches 25, 25 are formed. The front end portions 24 of the side walls 24, 24
Guide grooves 26, 26 are formed on the outer side surface. The moth
As for the id grooves 26, 26, the rear half of the
The first half extends downward from the front end of the second half
It is gently curved to be displaced. Further, the outer side surface of the right side wall front end portion 24 is formed.
In the portion located below the front end of the guide groove 26,
A spring hook 27 is provided in a protruding manner. The front ends 29, 29 of the top plate 28 of the upper half 8
Is formed at a position slightly lower than the remaining portion, and the front end 2
9 and 29 and the rest are connected by an inclined portion 30.
Has been continued. However, the upper and lower halves 8, 9 project vertically.
The cassette case 2 is formed by being joined together
You. Then, the side wall front ends 16, 1 of the lower half 9 are formed.
Notch 19, 19 formed in 6 and front end of side wall of upper half 8
With the notches 25, 25 formed in the parts 24, 24
Support holes 31 for supporting the lid described above are formed.
It is. The right side wall front end 16 of the lower half 9
And notches 20 and recesses 21a formed in the cover 21
The upper edge opening is the lower edge of the right side wall front end 24 of the upper half 8.
Lower edge of the outer end of the portion of the side wall 23 that is continuous with the front end 24
To support a pivot shaft of a lid lock member to be described later.
A support hole 32 and a support recess 32 'are formed. Next, outside the cassette case 2 of the magnetic tape 3
About the lid to protect the part exposed in
I will tell. The lid 33 is a cassette case for the magnetic tape 3.
And the tape outlets 6, 6
Front lid 34 that covers the front of
Back lid covering the rear and lower sides of the magnetic tape 3
And a top lid 36 that covers the upper side of the mouse unit 5
Consists of And, each of these lids 34, 35 and 36
Are each formed of a synthetic resin. The front lid 34 of the cassette case 2
A front portion 37 having a plate shape large enough to cover substantially the entire front surface;
Side portions 38 projecting rearward from both left and right ends of the front portion 37;
38 are integrally formed. Left and right ends of the front part 37
The upper edge of the notch is notched and faces both the left and right sides of the notch.
Support pins 39, 39 protrude from the surface. The side parts 38 of the front lid 37
Near the upper edge, slightly behind the center in the front-rear direction
The rotation shafts 40, 40 project inward at the position
On the outer peripheral surface at a position near the tip of the rotating shafts 40, 40.
An annularly extending engagement groove 41 is formed. The front end of the inner surface of the right side portion 38
A spring hook 42 projects slightly above the center of the shifted position.
In addition, approximately at the center of the inner surface of the rear end portion of the side surface portion 38,
A locked projection 43 is protruded, and the locked projection 43 is vertically
Extending rib 44 and a protrusion extending rearward from the middle of the rib 44
Portion 45, between the rib 44 and the projection 45
An open inverted V-shaped locking recess 46 is formed. Incidentally, 47, 47 are both ends of the lower edge of the front portion 37.
Notch formed in the lower half 9 in front of the bottom wall 13
The portions 13a, 13a of the edge except for the mouse 5 are substantially
It is formed correspondingly. Such a front lid 34 is
The engagement grooves 41 of the dynamic shafts 40 are in the cassette case 2.
Of the support holes 31, 31
Therefore, the cassette case 2 is supported rotatably in the vertical direction.
Is done. The top lid 36 is a top plate 2 of the upper half 8.
8, the front end portions 29, 29, the upper surface of the mouse portion 5, and the inclined portion 30
And a substantially plate-shaped main portion 48 covering a portion excluding a rear end portion of the main portion.
Connecting portions 49 and 4 projecting forward from the front ends of both ends of the portion 48
9 and the outer end of the main part 48, the front end of which is connected to the connecting part 49,
49 are integrally formed with the side wall portions 50 and 50
Consisting of Then, the inner end faces of the connecting portions 49, 49,
In other words, supported holes 51, 51 are formed on the surfaces facing each other.
And the inner surface of the rear end of the side wall portions 50, 50,
Guide pins 52, 52 project from the surfaces facing each other.
Have been. Reference numerals 53, 53 denote the lower portion of the main portion 48 near the center.
Position and separated in the left-right direction at the approximate center in the front-rear direction
The support pieces 53, 53 are provided as
Support holes 53a, 53a are formed. The top lid 36 is supported by
The support pins 39, 3 of the front lid 34 are inserted into the holes 51, 51.
9 is rotatably fitted so that its front end is
Rotatably on the upper end of the front part 37 of the front lid 34
Be linked. The guided pin 5 of the top lid 36
2 and 52 are formed on the front ends 24 and 24 of the side walls of the upper half 8.
Slidably engaged with the guide grooves 26, 26. The back lid 35 has a length left of the mouse 5.
It has a rectangular plate shape approximately equal to the right width, and its lower end
Projecting pieces 54, 54 project from the right and left ends of the
The outer surfaces of the rear ends of the projecting pieces 54, 54 are guided
Pins 55 and 55 are protruded. The upper edge of the back lid 35 is substantially a round bar.
And upper ends of both side edges of the back lid 35.
By forming notches 56, 56 at the closer position
The supported pins 57 are formed on both side ends of the upper end. Thus, the back lid 35
The supported pins 57, 57 are the supporting pieces 5 of the top lid 36.
3 and 53 are rotatably fitted into the support holes 53a, 53a.
As a result, the upper end of the back lid 35 is
The main part 48 of the lid 36 is rotatably supported on the lower surface. So
Then, the guided pins 55 of the back lid 35 are
The mouth formed on the mouth side walls 10 and 10 of the
It is slidably engaged with the id grooves 11,11. The front lid 34 and the back lid
The lid 33 composed of the lid 35 and the top lid 36 is
Can move between the closed position and the open position in the case 2
Will be supported. In the state shown in FIGS. 5 and 6, the lid 33 is closed.
Position, and in this state, the front lid 3
The front surface 37 of the cassette case 4 and the magnetic tape
Cover the front side of the part drawn out of the cassette case 2 of the
The upper edges of the notches 47 of the front portion 37 are
Front edges 13a of the bottom wall 13 of the case 2
It is in contact with the upper surface of the part. In the state where the lid 33 is in the closed position,
The back lid 35 has its guided pins 55 and 55
Located at the lower end of the groove 11
In the state of being inclined forward and backward to the rear side of the magnetic tape 3 at
And the lower end thereof is the front portion 37 of the front lid 34.
Of the front lid 34
The part of the magnetic tape 3 located in the mouth part 5 in cooperation with
The minute is covered except for the upper part. Further, the top lid 36 is
The guide grooves 26 of the cassette case 2
The main part 48 is located at the front end of the cassette case.
On the front ends 29 and 29 of the top plate 28 of the
Surface of the magnetic tape 3
It is in a state of covering the upper part of the part located in the mouse part 5
ing. The lid 33 is in the closed position.
In the state, the front portion 37 of the front lid 34,
By the main part 48 of the lid 35 and the top lid 36
The part of the magnetic tape 3 located in the mouth part 5 is completely covered.
It will be in a state of being broken. Reference numeral 58 denotes a lid lock member, which is made of synthetic resin.
It is formed. The lid locking member 58 is formed in a vertically long plate shape.
And supported pins 59, 59 projecting to both sides at the upper end thereof.
Are integrally formed. Also, from the upper end,
And a projecting piece 60 is provided on the rear end of the projecting piece 60.
The surface 60 a is a spring hook portion and is located below the rear end of the projecting piece 60.
The surface 60b is a contact portion. Also, the outer surface of the lower end
Is slightly protruded, and the thickened lower end portion 61 serves as an action portion.
Have been. Further, from a substantially middle position in the vertical direction
Has a lock piece 62 projecting forward, and the lock piece 6
A lock claw 62a protrudes upward from the tip of the second member 2.
I have. The lid locking member 58 is
The holding pins 59, 59 support the support holes 32 of the cassette case 2.
The receiving recesses 32 ′ are individually received, thereby
It is rotatably supported by the set case 2. And the lid
The rotation of the lock member 58 toward the lock position is caused by the abutment.
The part 60b contacts the stopper part 15b of the lower half 9.
And rotated to the lock position more than necessary
Not to be. Reference numeral 63 designates the cover 33 with the cover 33 facing the closed position.
The coil part 63a
And two arm pieces 63b and 63c extending from the
ing. Then, the torsion spring 63 is
File part 63a is the right pivot shaft 40 of the front lid 34.
And one of the arm pieces 63b has a front lid.
The spring 34 is elastically contacted from above with the spring hooking projection 42 of the
The arm 63c is placed on the spring hook 60a of the lid lock member 58.
It is hit by from the side. Thereby, the front lid 34
To the closed position, ie, in FIGS. 5 and 6
The clockwise turning force is urged, and the lid locking member 58 is turned on.
In the lock position direction, that is, in FIG. 5 and FIG.
The counterclockwise turning power is energized. Then, the lid 33 is closed as shown in FIGS.
When in the lid position, the position of the front lid 34
The upper edge of the notch 47 of the front part 37 is a cassette
On the front edges of the front ends 13a, 13a of the bottom wall 13 of the case 2
It is defined by contact with the surface. In addition, lid
The locking member 58 has a locking claw 62a whose front lid 3
4 engages with the locked projection 43 formed on the right side surface portion 38.
It engages with the stop concave portion 46, and thereby the lid 33 is closed.
Locked. When the tape cassette 1 is mounted on the recording / reproducing apparatus,
In the process of tape cassette 1, for example,
When held by the cassette holding member provided in the device,
The action portion 61 of the lid lock member 58 is provided on the cassette holding member.
Pressed backward by the unlocked member
As a result, the lid locking member 58 is
5 and 5 against the rotational force biased by 63
6, the lock pawl 6 is rotated clockwise.
2a comes off from the locking recess 46 of the front lid 34,
The lock on the body 33 is released. The tape cassette 1 is a recording / reproducing device.
When recording to the cassette mounting section of
The pressing pin 65 of the lid raising member 64 provided on the raw device is
Abuts against the lower edge of the side portion 38 of the front lid 34, and
And press it relatively upwards.
Trid 34 in counterclockwise direction in FIGS. 5 and 6
The top lid 36 and the back lid
The lid 35 is also moved toward the open position shown in FIGS.
Move. In the state shown in FIGS. 7 and 8, the lid 33 is opened.
Position, and in this state, the front lid 3
4 is a counterclockwise movement from the closed position shown in FIGS.
The camera is in a state of being rotated approximately 90 degrees in the
And the magnetic tape 3 is completely open.
Become. The back lid 35 is a cassette case.
The second inclined portion 30 of the top plate 28 and the rear side of the inclined portion 30 are connected.
Located along the edge. In addition, the back lid 35
Move from the closed position shown in FIGS. 5 and 6 to this open position
The supported pin 57 supported by the top lid 36 during the
Position 57 and the guide grooves 11 of the cassette case 2
The position of the guided pins 55, 55 to be guided
The attitude is controlled. Further, the top lid 36 is the back lid 3
Position above the top 5 and substantially parallel to the top plate 28 of the cassette case 2
It is located at. The top lid 36 is shown in FIGS.
While moving from the closed position to the open position
The position of the connecting portions 49 and 49 supported by the
Draft guided by guide grooves 26, 26 of set case 2.
The posture is controlled by the position of the inner pins 52, 52.
You. Next, during the assembly of the tape cassette 1,
The temporary fixing of the lid 33 to the upper half 8 will be described. The lids 34, 35 and 36 of the lid 33 are
After coupling as described, the coil of the torsion spring 63
Turn the portion 63a of the right side portion 38 of the front lid 34
With one arm 63b fitted to the driving shaft 40,
Elastic contact with the spring hooking projection 42 of the trid 34 from above,
then,Top lid36 guided pins 52, 52
Engage with the guide grooves 26, 26 of the upper half 8, and
The engagement grooves 41, 41 of the rotating shafts 40, 40 of the
The small arcuate cutouts 25 of the blade 8 engage the edges of the cutouts.
Then, the other arm piece 63c of the torsion spring 63 is moved upward.
The spring 8 is brought into elastic contact with the spring hooking projection 27 from above. As a result, the front lid 34
Movement force is applied by the elastic force of the spring 63.
And the engaging grooves 41, 41 of the rotating shafts 40, 40 are raised.
It is pressed against the edge of the notch 25, 25 of the half 8,
Thereby, the lid 33 is temporarily fixed to the upper half 8. As described above, the lid 33 is temporarily fixed to the upper half 8.
As a result, the assembly operation of the tape cassette 1 is simplified.
Becomes easier. Then, the upper half 8 and the lower half 9 are assembled.
When it is set up, the spring hook projection 27 of the upper half 8 is locked by the lid lock.
Position of the hook member 58 lower than the spring hook portion 60a.
The other arm 63c of the torsion spring 63 is
The spring member 60a of the lock member 58 is elastically contacted from above.
Will be. Then, the lid locking member 58 is
The other arm of the torsion spring 63 from above
63c is elastically contacted, and as shown in FIG. 5 and FIG.
The turning force in the counterclockwise direction is urged, but the
b abuts against a stopper 15b provided on the lower half 9
Since further rotation in the counterclockwise direction is prevented,
The lid lock member 58 is pivoted toward the lock position more than necessary.
Lock member 58 is locked more than necessary
Rotation in the loading direction, which hinders automatic assembly of the tape cassette.
Never be. The upper half 8 has a torsion spring 63
Spring hook projection for temporarily fixing the other arm piece 63c
27 is protruded, and the formation position of the spring hooking projection 27 is
What is necessary is just to consider only the temporary fixing of the arm piece 63c,
The function for regulating the rotation of the lock member 58 is completely considered
There is no need to perform
Eliminate or at least reduce space
And the degree of hindrance to miniaturization is almost eliminated. A stopper provided on the lower half 9
15b is the bending of the side wall 15 necessarily provided in the lower half 9.
Since the upper edge of the curved portion 15a is used,
It is necessary to specially process a mold for forming the pa portion 15b.
There is no difficulty in the mold configuration. [0092] [0093] As apparent from the above description,
The tape cassette of the present invention is a flat box-shaped cassette.
A part of the recording media tape stored in the
To the front of the storage case, and
Lid that protects the part outside the case when not in use
The cover to cover the recording media tape when not in use.
That does not interfere with the use of the recording media tape during
In front of the cassette case so that it can rotate freely between the lid position
A tape cassette provided on a surface portion,The above cover is recorded
A front lid that covers the front side of the media tape, and a recording medium
A back lid that covers the rear and lower sides of the tape, and a recording medium
And a top lid that covers the upper side of the body tape,Above
Upper half and lower harness with the set case divided into upper and lower parts
And the upper and lower sides are joined in a butt shape,Above
The lid slides into the guide groove formed in the upper half.
Are engaged inLocks the lid to the closed position when not in use
The locking position for locking the locking member to be locked and the locking position
Between the unlock position to release the lock
Support the cassette case, and rotate the cover to the closed position.
Lock position on lock member by resilient member that biases power
Energize the turning power toward, lower halfSide wallStopper
Part is formed, and the lock member is rotated toward the lock position.
When to lock memberFormed to protrudeButt is above
Contact with the stopper prevents the lock member from rotating more than necessary.
It is characterized by being stopped. Therefore, in the tape cassette of the present invention,
Is the lock memberFormed to protrudeButt contact
Stopper part to lower halfSide wallI decided to provide
When the stopper is provided on the upper half as in the past,
There is less dead space compared to
There is no hindrance. In addition, extra rotation of the lock member is prevented.
To enable automatic assembly and pivot to the lock member.
The urging of the force and the urging of the rotation to the lid are performed by a common elastic member.
By reducing the number of parts
Needless to say, labor saving in assembly can be achieved. Incidentally, the shape and structure of each part shown in the above embodiment are described.
The construction is not limited to the embodiment in carrying out the present invention.
It is only an example of the
If the technical scope of
Not something.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of the tape cassette of the present invention. FIG. 2 is an exploded perspective view. FIG. 3 is a horizontal sectional view. FIG. 4 is a bottom view. FIG. 5 is an enlarged sectional view taken along line VV in FIG. FIG. 6 is an enlarged sectional view taken along the line VI-VI in FIG. FIG. 7 is an enlarged cross-sectional view showing a state in which the lid is at a lid open position by cutting the same portion as in FIG. 5; FIG. 8 is an enlarged cross-sectional view showing a state in which the lid is at a lid opening position by cutting the same portion as in FIG. 6; FIG. 9 is an enlarged exploded perspective view showing a lid lock member and a lower half where the lid lock member is supported. FIG. 10 is an enlarged side view of a main part showing a state where the lid is temporarily fixed to the upper half. 11 shows an example of a conventional tape cassette together with FIG. 12, and is an enlarged cross-sectional view of a main part showing a state where a lid is in a closed position. FIG. 12 is an enlarged cross-sectional view of a main part showing a state where a lid is at a lid opening position. [Description of Signs] 1 Tape cassette 2 Cassette case 3 Magnetic tape (recording medium tape) 8 Upper half 9 Lower half 15 (Lower half) Side wall 15b Stopper 26 (Upper half) Guide groove 33 Cover 34 Front lid 35 Back lid 36 Top lid 58 Lid lock member (lock member) 60b Abutment portion 63 Torsion spring (elastic member)

Claims (1)

(57) [Claims 1] A part of a recording medium tape housed in a flat box-shaped cassette case is led out to the front part of the cassette case, and the cassette case of the recording medium tape is drawn. The lid that protects the portion located outside when not in use is freely rotatable between a closed position that covers the recording medium tape when not in use and an open position that does not hinder use of the recording medium tape when in use. A tape cassette provided on the front surface of a cassette case, wherein the lid is a front lid that covers the front side of the recording medium tape.
And a back cover that covers the rear and lower sides of the recording medium tape.
And a top lid that covers the upper side of the recording medium tape
Et made, formed by combining the shape abutting a half and the lower half on which the split of the cassette case in the vertical up and down, the upper
The top lid is inserted into the guide groove formed in the upper half.
A cassette case that is slidably engaged and rotates between a lock position for locking the lock member that locks the lid to the closed position when not in use and a lock release position for releasing the lock; The lock member is urged to rotate toward the lock position by a resilient member that biases the cover toward the closed position, and forms a stopper on the side wall of the lower half. When the lock member is rotated toward the lock position, a contact portion formed to project from the lock member abuts on the stopper portion to prevent unnecessary rotation of the lock member. Tape cassette.