JPH0722748Y2 - Video cassette tape loading device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape loading device for a video cassette tape used in a video recorder or a video camera.

[0002]

2. Description of the Related Art As shown in FIG. 4, a video cassette tape has a magnetic tape 1 housed in a cassette case 3. The magnetic tape 1 contacts with the tape guide 2 and is wound and accommodated by the supply reel 4 and the take-up reel 5. This video cassette tape is set in a video recorder or video camera to record and play back video and audio.

FIG. 5 shows a state in which a video cassette tape is set in a video recorder and put in a loading state. At this time, the magnetic tape 1 is pulled out from the cassette case 3 by a tape loading device provided in the video recorder, and the magnetic tape 1 is guided by a number of guides 51 to 55 of the video recorder and wound around the magnetic head 57. The magnetic head 57 is pressed. In this state, recording / playback is performed while the magnetic tape 1 moves between the supply reel 4 and the take-up reel 5 at a constant speed.

When reproducing a recorded magnetic tape, it is necessary to rewind to the recording start position. In addition, it is necessary to fast-forward and skip a portion that does not need to be reproduced. The rewinding / fast-forwarding of the magnetic tape is generally performed by a video recorder or a video camera which is a recording / playback device. for that reason,
Video recorders and video cameras are equipped with a rewind / fast-forward mechanism.

Also, during rewinding / fast-forwarding, the video recorder or video camera cannot be used for recording / playback. Therefore, a rewinding / fast-forwarding device specialized for rewinding / fast-forwarding is used instead of a video recorder or a video camera. FIG. 7 shows a conventional tape loading device provided in this device. When the video cassette tape is set in the rewinding / fast-forwarding device and put in the loading state, the magnetic tape 1 is pulled out from the position shown by the chain double-dashed line to the position shown by the solid line as shown in FIG. Rewind and fast forward are performed. The tape loading device shown in FIG. 7 performs this tape drawing. This device includes a pair of rotating arms 72 and 73 pivotally supported by a pin 71 and extending in the left-right direction in the drawing, and a pair of loading gears 74 and 73 arranged at the outer ends of the pair of rotating arms 72 and 73, respectively. And 75. The rotating arms 72 and 73 are provided with fan gears 76 at their outer ends, and the fan gears 76 mesh with the loading gears 74 and 75, respectively. The inner ends of the pair of rotating arms 72 and 73 are both engaged with the drive arm 79. Loading gear 74
And 75 respectively include loading arms 77 and 78 fixed thereto.

When the drive arm 79 moves downward in the drawing,
The rotating arms 72 and 73 rotate about the pin 71, and the loading gears 74 and 75 rotate in the directions of the arrows in the figure.
As a result, the guide rollers 70 of the loading arms 77 and 78 are moved to the position indicated by the alternate long and short dash line, that is, the loading position. At this time, the magnetic tape 1 is pulled out from the position indicated by the chain double-dashed line in FIG. 6 to the position indicated by the solid line, and rewinding / fast-forwarding is performed in this state.

[0007]

The conventional tape loading device described above has a pair of rotating arms 72 and 73 extending in the lateral direction (left and right direction in the drawing) and the rotating arms 72 and 7.
Loading gears 74, which are respectively arranged at the outer ends of 3,
75, and the loading arms 74, 75 with which the loading gears 74, 75 respectively rotate.
Since it has 78, it becomes long in the horizontal and vertical directions,
It was difficult to downsize the device.

Therefore, the present invention aims to provide a novel tape loading device that solves the above problems.

[0009]

SUMMARY OF THE INVENTION A tape loading device for a video cassette tape according to the present invention comprises a rewinding / fast-forwarding mechanism, a receiving plate for receiving the video cassette tape, and a direction perpendicular to the running direction of the magnetic tape of the video cassette tape. On both sides of the first elongated hole so that the distance between the first elongated hole and the axis of the first elongated hole increases as the distance from the video cassette tape increases. A pair of second elongated holes arranged, a slide pin slidably arranged in the first elongated hole, a pair of arm members each one end of which is pivotally supported by the slide pin, A support pin that is fixed to each other end of the arm member and supports a roller and is movable in the pair of second elongated holes, and an elliptical through hole is formed in one end of the arm pin so that it can be rotated by a force acting on the other end. It is pivotally supported in the oval through hole A lever member for loosely fitting a slide pin, an operation button member movably arranged parallel to the first elongated hole, and an operation button member for transmitting an operation force of the operation button member to the lever member. It is characterized by comprising an elastic member that connects the other end of the lever member.

An example in which the present invention is applied to a rewinding / fast-forwarding device will be described below. However, the present invention is not limited to this, and can be applied to, for example, a video recorder or a video camera.

[0011]

1 is a plan view of the present tape loading device. Rewind the video cassette tape to the backing plate 13.
A fast-forward mechanism 14 is provided. The rewinding / fast-forwarding mechanism 14 includes a motor 10 that uses a battery 35 as a power source, and a drive belt 1 that transmits the power of the motor 10 to a drive gear 12.
1, a rewinding / fast-forwarding switching gear 15 that meshes with the drive gear 12, a fast-forwarding reel gear 16 and a rewinding reel gear 17 that can be selectively engaged with the switching gear 15.

The receiving plate 13 is housed in a housing case (not shown), and a first elongated hole 18 is formed in the center of the board 34 of the housing case. The first elongated hole 18 is an elongated through hole and extends at right angles to the running direction of the magnetic tape 1 (FIG. 2) of the video cassette tape. A pair of second elongated holes 19 and 20 are formed in the receiving plate 13 on both sides of the first elongated hole 18 at substantially equal distances from the axis of the first elongated hole. The second elongated holes 19 and 20 are arranged so as to be inclined with respect to the first elongated hole 18 so that the distance from the axis of the first elongated hole 18 increases as the distance from the video cassette tape increases. One end of each of the second elongated holes 19 and 20 is substantially the first.
It is located at the center of the elongated hole 18 and the other end is located at the other end of the first elongated hole 18.

A slide pin 3 is provided in the first elongated hole 18.
3 is slidably arranged. This slide pin 33
Is configured to move in the first elongated hole 18 from one end to the other end of the first elongated hole 18 by a lever member described later. A pair of arm members 21 and 22 are pivotally supported on the slide pin 33. A through hole is formed at one end of each of the arm members 21 and 22, and the slide pin 33 is inserted through the through hole, whereby the arm members 21 and 22 can rotate about the slide pin 33. The support pin 23 is fixed to the other ends of the pair of arm members 21 and 22.
The support pin 23 penetrates the loading guide roller 24 and rotatably supports the loading guide roller 24. The support pin 23 is present in the pair of second elongated holes 19 and 20 and is movable in the second elongated holes 19 and 20 from one end to the other end.

Lever member 25 for driving slide pin 33
Are pivotally supported by a pin 26 located at the center of the first elongated hole 18. The pin 26 is fixed to the substrate 34. An elliptical through hole 27 is formed at one end of the lever member 25, and a slide pin 33 is loosely fitted in the through hole 27. The lever member 25 is rotated about the pin 26 by the force acting on the other end of the lever member 25, whereby the slide pin 33 moves up and down in the first elongated hole 18. The lever member 25 is operated by the operation button 27. The operation button 27 is disposed on the side of the receiving plate 13 and is movable in parallel with the first elongated hole 18.
The operation button 27 has a slide fixing plate 31 by a spring 30.
It is biased to the side, and is engaged with the stop button 32 during operation to be held in that position. A connecting member 28 is pivotally supported at one end of the operation button 27, and the connecting member 28 and the lever member 2
5 between the other end 25a and the elastic member, that is, the compression spring 2
9 are provided. The compression spring 29 elastically contracts in accordance with the movement of the operation button 27 so that the operation button 27 can be moved and the operation force of the operation button 27 is transmitted to the lever member 25.

FIG. 2 is a plan view of the tape loading device in the loading state. When the video cassette tape is loaded in the apparatus, the pair of loading guide rollers 24 are located inside the magnetic tape. When the operation button 27 is operated to move it downward, this operation force is transmitted to the lever member 25 via the connecting member 28 and the compression spring 29, and the lever member 25 rotates clockwise around the pin 26. This rotation is transmitted to the slide pin 33, and the slide pin 33 moves from the position shown in FIG. 1 to the position shown in FIG. With the movement of the slide pin 33, the pair of arm members 21 and 22 pivotally supported on the slide pin 33 rotate in opposite directions about the slide pin 33, and together with this, the support pin 23.
The other end side to which is fixed moves in the second elongated holes 19 and 20 from the position shown in FIG. 1 to the position shown in FIG. Along with this shift, the magnetic tape 1 is pulled out from the video cassette tape 3 and held at the loading position in FIG. The switching gear 15 of the rewinding / fast-forwarding mechanism 14 is the reel gear 1 for fast-forwarding.
6 or the rewinding reel gear 17 is selectively engaged, whereby the power of the motor 10 is transmitted to one of the reel gears via the drive belt 11, the drive gear 12, and the switching gear 15, and the magnetic tape 1 Are fast forwarded or rewound.

[0016]

Since the present invention is constructed as described above, it is possible to realize a tape loading device in which the horizontal direction and the vertical direction are reduced as compared with the prior art, and as a result, it is possible to contribute to downsizing and weight saving of the device. be able to. In particular, it is possible to provide an optimum tape loading device in the field of 8 mm video cameras, which are required to be small and lightweight.

Further, the present device has a long hole, a pin slidable therein, and a plate member (arm member and lever member) as constituent elements, so that the structure is simple and therefore can be manufactured. It will be easy.

[Brief description of drawings]

FIG. 1 shows a plan view of a tape loading device of the present invention.

FIG. 2 is a plan view of the tape loading device in a loading state.

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

FIG. 4 shows a plan view of a video cassette tape.

FIG. 5 is a plan view showing how a video cassette tape is set in a video recorder and put in a loading state.

FIG. 6 is a plan view showing a state in which a video cassette tape is set in a rewinding / fast-forwarding device and put into a loading state.

FIG. 7 is a plan view showing a conventional tape loading device provided in a rewinding / fast-forwarding device.

[Explanation of symbols]

 13 Receiving plate 18 First long hole 19,20 Second long hole 21,22 Arm member 23 Support pin 25 Lever member 27 Operation button 29 Compression spring 33 Slide pin

Claims (4)

[Scope of utility model registration request] 1. A receiving plate having a rewinding / fast-forwarding mechanism for receiving a video cassette tape, and a first elongated hole extending at right angles to the running direction of the magnetic tape of the video cassette tape.
A pair of second elongated holes which are arranged on both sides of the first elongated hole so as to be inclined with respect to the first elongated hole so that the distance from the axis of the first elongated hole increases as the distance from the video cassette tape increases. When,
A slide pin slidably disposed in the first elongated hole, a pair of arm members each having one end pivotally supported by the slide pin, and a roller fixed to each of the other ends of the pair of arm members to support a roller. And a support pin movable in the pair of second elongated holes, and an elliptical through hole formed at one end of the support pin so as to be rotatably supported by a force acting on the other end and slidable in the elliptical through hole. A lever member for loosely fitting a pin, an operation button member movably arranged in parallel with the first elongated hole, and an operation button member for transmitting an operation force of the operation button member to the lever member. A tape loading device for a video cassette tape, comprising an elastic member that connects the other end of the lever member. 2. The tape loading device for a video cassette tape according to claim 1, wherein the first elongated hole is provided in the receiving plate or a substrate of a housing case for housing the receiving plate. 3. The tape loading device for a video cassette tape according to claim 2, wherein a pivot pin that pivotally supports the lever member is provided on the substrate. 4. The tape loading device for a video cassette tape according to claim 1, wherein the first elongated hole is provided in the substrate and the pivot pin is provided in the receiving plate.