KR910006363B1 - Tape cartridge for reading - Google Patents

Abstract

No content.

Description

Recordable tape cartridge

1 is a perspective view showing one embodiment of a tape cartridge for recording according to the present invention.

FIG. 2 is a government plan view showing the inside of the recording tape car cartridge shown in FIG.

3 is a sectional view taken along the line A-A of FIG.

FIG. 4 is an enlarged top view showing a typical part of the used brake mechanism of the recording tape car cartridge shown in FIG.

Fig. 5 is an exploded part arrangement diagram showing a typical part of the braking mechanism of the recording tape caratridge according to the present invention.

6 is a front cross-sectional view of the braking mechanism shown in FIG.

7 is a side cross-sectional view of the braking mechanism in a braking state.

8 is a side cross-sectional view of the brake mechanism in a released state.

9 is a sectional view of a second embodiment of a braking mechanism according to the invention.

10 is a sectional view of a third embodiment of a braking mechanism according to the invention.

11 is a cross-sectional view taken along the line B-B of FIG.

12 is a sectional view of a fourth embodiment of a braking mechanism according to the invention.

13 is a sectional view taken along the line C-C of FIG.

14 is an exploded view of an arrangement of a fifth embodiment of a braking mechanism according to the present invention;

FIG. 15 is a sectional view of a typical part of the braking mechanism of FIG.

16 is a sectional view of a sixth embodiment of a braking mechanism according to the invention.

* Explanation of symbols for main parts of the drawings

1: box body la: upper body

1b: lower part 2: recording tape

3: tape rail 4: bottom

11: upper flange 12: lower flange

17: compression spring plate 21: braking mechanism

22: through hole 23: guide wall

24: support wall 25: inner side

26: protruding stone 27: papermaking member

28: coil spring 30: active member

31: braking member 33: rib

35: space 41: release member

43: coupling flange 44: coupling wall

46: top plate 47: groove

48: home 49: rib

The present invention relates to a recording tape cartridge having an arrangement for applying a braking force to a tape rail housed in a cartridge case.

The recording tape cartridge is provided with a braking mechanism to prevent undesired rotation of the pair of tape rails when the video tape cassette is not used in the so-called video tape cassette. Braking mechanisms typically bias the paper member with the toothed portion of the tape rail when the papermaking member and the video carace set are detachably engaged with one of the coupling teeth formed at the periphery of each flange of the tape rail. It has a spring member for. In the manufacture of such a video tape cassette, a tape rail and a braking mechanism having a magnetic recording tape are installed in the lower body of the video cassette, and as a result, the upper body is assembled in the lower body, and a generally known method is simple by means of a screw. To be combined.

Each element of the conventional brake mechanism is prevented from being separated by covering the brake mechanism by a part of the upper surface when the upper body portion is assembled to the lower body portion. However, the conventional method of preventing the detachment of the braking mechanism as described above has many drawbacks as mentioned below.

(1) In the manufacturing process of the video upper body before assembling the upper body part, the restraining member of the braking mechanism is easily protruded upward by slight vibration, so the position of the restraining member is changed, or the free end of the restraining member is taped. It is unjustly placed on the upper surface of the rail, leading to a non-operational state of the brake mechanism.

(2) The relationship between size, upper surface, lower surface, and braking mechanism should be accurate, and each assembly and size error of components adversely affect each other, thereby causing difficulty in correct assembly of the braking mechanism. Therefore, the non-operational state of the brake mechanism easily occurs.

(3) In order to cover the upper part of the brake mechanism, the corresponding part of the upper surface facing the brake mechanism must have a shape suitable for the upper part of the brake mechanism, so that the shape of the corresponding part of the top part becomes complicated.

(4) It is difficult to automatically assemble the braking mechanisms on the bottom and top surfaces.

It is therefore an object of the present invention to provide a braking mechanism for use in a recording tape cartridge that is simple in structure and easily installs a cartridge.

Another object of the present invention is to provide a braking mechanism for the use of a recording tape car cartridge which is not easily detached before the upper body is assembled with the lower body. It is a further object of the present invention to provide a braking mechanism for use in a tape tape cartridge for accurately operating the braking mechanism.

Referring to FIGS. 1 to 3, a video tape car cartridge is shown for use in a small video tape recorder, and the box body 1 of the recording tape car cartridge is made of a plastic resin material. It is comprised by assembling both of the lower body parts 1b.

The upper body portion 1a and the lower body portion 1b are assembled to each other by a screw. Inside the box 1, a pair of tape rails 3 and 3 are wound around the recording tape 2 in a conventional manner. The tape rail 3 is rotatably installed in the box 1 having a central portion facing the drive shaft insertion hole 5 formed in the bottom face 4 of the lower body 1b.

A pair of tape guide members 6 is formed on the left and right front portions of the box 1, the recording tape 2 is released on one of the tape rails 3, and the tape guide member 6 It is wound by another tape rail 3 passing through the front part of itself 1.

A recess is provided in the front of the box in order for the pocket 7 to receive the tape lead-out pin (not shown) provided in the video tape recorder.

The front cover 9 is rotatably installed in the front part of the box 1, and when the video tape cartridge is not in use, a recording tape existing between the pair of tape guide members 6 and 6 ( The recording surface of 2) is rotated downward to the closed position to close the front surface of the case body 1, and when the video tape cartridge is installed on the video tape recorder, the front cover 9 of the case body 1 The recording tape 2 is pulled out of the box 1 by the tape take-out pin of the video tape recorder which is rotated to open the front portion upward and enters the pocket 7 from below. Each of the tape rails 3 has an upper flange 11 and a lower flange 12 made of a transparent material fixed to both the hub 10 and the upper and lower ends thereof.

The lower flange 12 has a peripheral portion formed with a coupling tooth for engaging with the braking mechanism described later. The upper flange 11 has indicated a number of scales or scales 15 on its surface so as to know the amount of the roll of the recording tape 2 wound on the tape rail 3.

Each of the tape rails 3 and 3 is burned so that one end thereof is pressed downward by a rail compression spring plate 17 fixed to the inner surface of the upper body part la and the central shaft can be rotated to a point. Sexually coupled. On the upper surface of the upper body part la, a label surface 19 having a generally concave, slightly concave portion is formed, and the upper body part la is coupled to the label lower surface 19.

In order to know the wound amount of the recording tape wound on each tape rail 3, the tape rail 3 was formed in the front part of the upper part la for transparent window which each half is seen.

In general, a V-shaped spring plate 17 is provided on the inner side of the label surface 19, and the amount of winding of the recording tape is recognized when the recording tape cartridge is seen from the outside. A braking mechanism 21 for controlling the rotation of the tape rail 3 when the cartridge is not used is provided at the rear of the center of the box 1.

4 to 7, generally, the through-hole 22 extending in the longitudinal direction may extend from the rear edge of the lower body portion 1b to the front side in the width direction V of the bottom surface 1 of the lower body portion 1b. It is made in the center part with respect to the rear part of 4) and the longitudinal direction U (see FIG. 1) of the box 1. On both sides of the through-hole 22, a pair of guide walls 23, 23 are installed on the bottom surface 4 at an appropriate height, but extend in front of each other in parallel. Each of the guide walls 23 and 23 is formed side by side with the protrusions 26 and 26 which protrude inward of a predetermined length, and these protrusions 26 and 26 have an upper end.

On the outside of the pair of guide walls 23, 23, a pair of support walls 24, 24 were provided on the bottom face 4 in parallel with the guide wall 23. The support walls 24, 24 are higher than the guide wall 23 to support the papermaking member 27 as will be described later.

The inner surface of the through hole 22 is flushed with the inner surface 25 of the guide wall 23, so that the protrusions 26 are formed by the mold. The braking mechanism 21 has a pressing member 27 and a coil spring 28 of a pressing type.

The paper-making member 27 is formed of a plastic resin material in a U shape when viewed from the side view, and is formed by the active member 30, and the pair of braking members 31 and 31 are springs on the front surface of the active member 30. Protruding forward by the elasticity of (28), the free ends of these braking members (31), (31) are bent outward to engage one of the teeth of the lower flange 12 on the tape rail (3), ribs Reference numeral 33 protrudes vertically from the center of the upper end 32 of the active member 30, a pair of horizontal plates 34, 34 in the middle of the rib 33 is provided to the outside.

The space 35 formed by the two legs of the active member 30 acts to receive the brake release member of the video tape recorder when the brake release member enters through the through hole 22. The active member 30 formed in a U shape to provide the space 35 is a cube block having a hole for receiving the braking releasing member.

The papermaking member 27 is installed on the bottom surface in accordance with the space 35 between the guide walls 23 while pressing the active member 30 downward after the tape rail 3 is placed. When fitted, the guide wall 23 is elastically displaced outwardly to allow the active member 30 to pass therebetween. The lower surface 36 of the horizontal plate 34 is supported by the upper surface 37 of the support wall 24 so that the paper member 27 is supported by the support wall 24. . The papermaking member 27 is prevented from being separated from the space 35 between the guide walls 23 in the upper direction because the upper end 32 of the active member 30 is coupled with the bottom of the protrusion 26.

As a result, the spring 28 is installed in the space 35 between the rear surface of the active member 30 and the rear vertical wall of the lower body 1b as shown in FIG. 7 and the papermaking member 27 is the spring 28. It is biased toward the tape rail 3 by the elastic force of the.

As shown in FIG. 7, one end of the spring 28 is installed in the recess 30a formed at the rear of the active member 30. After the paper-making member 27, the coil spring 28, and other necessary components are assembled to the lower body part 1b, the upper body part 1a is assembled with the lower body part 1b, and both parts are mutually mutually connected by a tapping screw. Sticks. In the assembly of the lower body portion 1b and the upper body portion 1a, the upper surface 39 of the rib 33 faces adjacent to the inner surface of the upper wall 20 of the upper body portion 1a to the guide wall 23. The release of the active member 30 is prevented even if the video tape car cartridge is subjected to strong vibration or shock.

The operation of the above-described braking mechanism is described below. In the case where the video tape cartridge is not used, the papermaking member 27 is pushed forward by the force of the spring 28 and both free ends of the braking member 31 wind the tape in the direction of arrow Y. And engaging teeth of the bottom flange of the tape rail 3 to prevent the tape rail 3 from turning in the direction in which the recording tape 2 is released from the tape rail 3 in the arrow X direction. Combined with

When the video tape cartridge is installed in the video tape recorder, the re-release member of the video tape recorder is inserted into the space 35 through the through hole 22 and engaged with the active member 30 so that the papermaking member 27 is guide wall. Guided by (23) to slide backward, the brake member 31 is free to rotate the tape rail (3) is released from the engaging teeth 13 of the tape rail (3).

In more detail, when the video release recorder is provided with a reel release member 41 fixed to the video tape recorder having the front surface on which the inclined surface 40 is formed, as shown in FIG. When it is inserted while moving upward in the space (35) through the joint of the bottom edge of the active member 30 and the inclined surface 40 to release the braking member 31 from the coupling teeth (13) Slides backwards.

In the case where the video tape recorder is provided to the movable releasing member 41a of the round pin, the papermaking member 27 simultaneously with the movement of the tape take-out pin for withdrawing the recording tape from the video tape car cartridge. It is moved backward by movement.

A second embodiment of the braking mechanism is shown in FIG. 9, in which each of the guide walls 23 has an upper end formed in the plane 37 and the paper making member 27 is fitted to the outside of the guide wall 23. It is formed by the same member. In the paper-making member 27, the coupling flange 43 protrudes on both sides of the bottom of the member, such as a channel, and the coupling flange 43 is movably fitted in the groove made by the bottom surface 4, and the protrusion 26 is bottomed. A pair of low engagement walls 44, 44 protruding from (4), (4) are formed at the top.

A third embodiment of the braking mechanism is shown in FIGS. 10 and 11, wherein the ribs 33 and the horizontal plate 34 are omitted from the active member 30 of the embodiment shown in FIGS. 4 to 7. The end of the active member 30 is freely supported on the bottom surface 4 by sliding. In particular, the length of the active member 30 is greater than the length of the through hole 22 in the width direction of the box 1, and the front and rear ends of the active member 30 are freely supported on the bottom surface 4. .

A fourth embodiment of the braking member is shown in FIGS. 12 and 13 and is a modification of the third embodiment, in which both upper ends of the guide wall 23 are connected to the top plate 46. The active member 30 is provided in a space surrounded by the upper plate 46 and the guide wall 23 from the front side. The upper plate 46 acts like a papermaking member to prevent release of the active member 30.

The fifth embodiment of the braking mechanism shown in FIGS. 14 and 15 is another modification of the third embodiment, in which the guide wall 23 of the aperture 22 is narrower than the guide wall shown in FIGS. 10 and 11. It protrudes from the center of both left and right sides.

Furthermore, the guide wall 23 of the fifth embodiment is erected upward in the groove 47 formed at the centers of both edges of the through hole 22 while being larger than the width of the through hole 22. The width of the active member 20 is wider than the width of the through hole, and when the active member 30 is placed between the guide walls 23, the bottom surfaces of both sides of the active member 30 form both side portions of the through hole 22. Slip is supported freely on the bottom face 4. Furthermore, the spring plate 28a having the V shape pushes the active member 30 forward.

The spring plate 28a is installed in such a manner that the free end of the spring plate 28a is joined to the rear surface 39 of the lower body portion 1a and the middle portion 28b where the free ends of the active member 30 are joined. .

16 shows a sixth embodiment of the braking mechanism wherein the active member 30 is provided with a pair of ribs 49 extending horizontally at the upper ends of both sides. The rib 49 is fitted into the grooves 48 formed on both inner surfaces of the guide wall 23, and the active member 30 is freely supported in the space between the guide walls 23 so that the guide wall 23 is free. Release) is prevented.

In the case where the groove 48 is formed higher than the height of the rear wall of the lower body 1b, the groove 48 may be molded using an active core.

In the sixth embodiment, the rib 49 may be formed in the guide wall 23 while forming the grooves 48 on both sides of the active member 30. In this case, it is possible to mold by forming the bottom face with the bottom die and the top face with the upper die through the through hole 22. In various embodiments, two paper-making members having a single braking member 31 may be used instead of the paper-making member 27 having two braking members 31.

In this case, the papermaking member is placed separately at both corners of the lower body portion 1b. Instead of the spring 28, the papermaking member 27 may be provided as an elastic member integrally formed with the papermaking member, and the elastic member acts to push the papermaking member toward the tape rail.

Moreover, the shape of the spring plate 17 for supporting the tape rail is not limited to that shown in FIG.

Again, the transparent window 20 may be separated into two. It is also noted that the recording tape caratridge according to the present invention can be applied to various types of recording tape caratridges, not limited to the videotape caratridges indicated by the above-described embodiment.

Claims (8)

A tape rail having a lower body portion, an upper body portion assembled with the lower body portion to form a box body, and a flange having a coupling tooth connected to an outer circumferential surface of the upper body part, which can be wound around the recording tape, A through hole formed in the lower body portion for insertion of the tape rail release member provided in the recording device, a pair of guide walls protruding on both sides of the through hole, and forming a space therebetween, and a coupling tooth of the tape rail. A braking member connected to one, the braking member is connected to one of the coupling teeth of the tape rail, and the first position where the tape rail is prevented from rotating and the braking member are separated from the coupling teeth of the tape rail, thereby allowing the rotation of the tape rail. The paper-making member guided by the guide wall for moving between the second positions, the elastic device for elastically biasing the paper-making member to the first position, and the paper-making member Consists of access for preventing the exit to the opposite wall from the tape cartridge Carr for recording characterized in that it comprises a braking mechanism for stopping the rotation of the tape reel when not in use, the tape reels. 2. The papermaking member according to claim 1, wherein the papermaking member is made of an active member, the active member being freely slipped in the space between the guide walls, and having two legs and an upper end connected to both legs. It forms a shape, ribs protrude from the top of the active member, horizontal plates protrude horizontally from the center of the ribs, and each horizontal plate terminates at the free end, and a pair of braking members extend from one side of the leg of the active member. The guide wall is provided with a protrusion protruding from the upper end of the guide wall toward the space and is accommodated between the guide wall provided with the active member and the horizontal plate located at the top of the guide wall provided with the braking member toward the tape rail. The papermaking member is disposed so that the free end of the horizontal plate is free to slide on the upper surface of the support wall formed outside the guide wall. And the papermaking member is suspended by the horizontal plate and the support wall, and the release of the papermaking member is restrained by the projection. 2. The stop member according to claim 1, wherein the connecting device is formed of a plate member interposed between two upper ends of the guide wall, and the stop member is generally U-shaped, and the stop member is freely received in the space between the guide walls. The tape cartridge for recording, characterized in that the separation of the plate member is prevented. The recording tape cartridge as claimed in claim 1, wherein the connecting device is constituted by a pair of protrusions protruding from the guide wall toward the space and the papermaking member is accommodated in the space, so that the separation of the papermaking member is prevented by the protrusion. . 2. A connecting device according to claim 1, wherein the connecting device is composed of a pair of protrusions formed on a pair of guide walls protruding from the lower body portion, and the papermaking member is formed by a channel-like member having a pair of flange portions projecting outwardly from the lower body portion. The papermaking member is combined with a guide wall covering the outside of the guide wall with each of the flanged portions of the channellike member adapted to the space formed by the lower body and the protrusion one, and the papermaking member being guided by the protrusion. The tape cartridge for recording, characterized in that departure from the device is prevented. The guide wall of claim 1, wherein the guide wall has a distance from each other that is greater than the support between both edges of the through hole, and protrudes from both sides of the through hole, and a pair of protrusions is provided at the top of each guide wall, and the paper member has a bottom thereof. A recording tape cartridge as claimed in claim 1, wherein the release of the paper-making member is prevented by the projection of the guide wall so as to be freely supported on the circular edge portion of the lower body to be formed. The recording tape cartridge as claimed in claim 1, wherein the connecting device comprises a slot device formed on a guide wall formed on the guide wall, and a slot device provided with a protruding device for freely engaging the slide. 3. A coil spring braking device according to claim 2, wherein a tape rail braking device is disposed between two tape rails adjacent to a connection tooth of a corresponding tape rail, and said elastic device is installed between a rear surface of the papermaking member and said rear wall member of the lower body. Tape recording cartridge for recording.

Images