JP3024005U - Cassette torque meter - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cassette torque meter capable of measuring the tape drive force of a tape recorder in normal play and reverse play with one cassette torque meter. A tape recorder is provided with a tape 2, a take-up reel 3 for winding the tape, and a torque-measuring feed reel 4 for indicating the tension of the tape wound by the take-up reel on a scale board in a container. In a cassette torque meter which is mounted on the scale and measures the tape driving force of the tape recorder from the instructions of the scale, scales 5a and 5b are provided on both sides of the torque measuring feed reel 4, and the directions are different on each side. A cassette torque meter that can measure the drive force of a tape.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a cassette torque meter mounted on a tape recorder to measure the tape driving force of the tape recorder.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a tape recorder is a device that records an audio signal and other information on a magnetic tape by magnetizing a magnetic tape coated with a fine powder of magnetic material, and records and reproduces the recorded signal. For recording and recording / playback of a tape recorder, a cassette tape which is formed so that a magnetic tape is housed in a container and can be directly attached to and detached from the tape recorder is used. The cassette tape is attached to a tape recorder and audible. Recording and playback of frequency signals are being performed.

[0003]

[Problems to be solved by the device]

 When the cassette tape is mounted on the tape recorder and driven as described above, the magnetic tape is driven by the tape feeding mechanism provided in the tape deck of the tape recorder to record and reproduce audio signals. However, at this time, the tape drive force is applied by the tape drive force of the tape recorder.

In order to record and record normal audio signals, it is necessary to stably drive the tape at a constant speed. For that purpose, the tape driving force of the tape recorder is within a specific range. Needs to be controlled. Therefore, a method is used in which the tape driving force of a tape recorder is measured with a cassette torque meter and the tape driving force is adjusted within a specific range based on the measured value.

FIG. 6 is an explanatory diagram showing a cassette torque meter for measuring the tape driving force of a conventional tape recorder. In the figure, a conventional cassette torque meter indicates a tape 52, a take-up reel 53 for winding the tape 52, and a tension of the tape wound by the take-up reel 53 to a scale board 55 in a container 51. It is a cassette type meter equipped with a torque measuring feed reel 54, and has the same shape as the cassette tape. The take-up reel 53 is rotatably formed. On the other hand, the torque-measuring feed reel 54 is formed by a ball bearing mechanism, is fixed to the center, has a fixed disk 56 having a scale indicating arrow 58, and has a movable scale 55 having a scale 55 outside the fixed disk 56. A movable disk 57 is provided between them via a ball 59.

The scale 55 is provided only on one surface of the torque measuring feed reel 54, and a spiral spring is provided on the back side of the movable disk 57 to which the scale 55 is attached. .

To measure the tape driving force of a tape recorder, the cassette torque meter, which has the same shape as the cassette tape, is mounted on the tape recorder and driven, and the tape end is fixed. Since the tape is wound by the take-up reel and the other end of the tape is fixed to the torque-measuring feed reel, the torque-measuring feed reel rotates due to the tension of the tape, and at the same time, the scale plate rotates and the scale The tape driving force of the tape recorder can be measured from the indication on the scale of the indication arrow 58.

However, in the above conventional cassette torque meter, since the scale 55 is provided only on one surface of the torque measuring feed reel 54, only the tape driving force that moves in one direction is applied. It can be measured, but not the driving force of a tape moving in the other direction. That is, for example, since it is not possible to measure only the tape drive force for normal play with one cassette torque meter, the tape drive force for reverse play can only be measured by another cassette torque meter equipped with a graduation plate. Had to be measured by using two cassette torque meters to measure the tape drive force in both directions.

The present invention has been made in order to improve the drawbacks of the prior art as described above, and by providing a scale plate on both sides of the cassette torque meter to enable measurement on both sides, It is an object of the present invention to provide a cassette torque meter that can measure the tape driving force of a tape recorder in two directions, that is, normal play and reverse play of a tape recorder.

[0010]

[Means for Solving the Problems]

 That is, the present invention comprises a tape recorder, a container, a tape, a take-up reel for winding the tape, and a torque measuring feed reel for indicating the tension of the tape wound by the take-up reel on a scale. In a cassette torque meter that is mounted on a tape recorder to measure the tape drive force of the tape recorder from the instructions on the scale, a scale is provided on both sides of the torque measurement feed reel, and tape drive with different directions on each side. A cassette torque meter characterized by being able to measure force.

[0011]

[Embodiment of device]

 The cassette torque meter of the present invention comprises a container, a tape, a take-up reel for winding the tape, and a torque-measuring feed reel for indicating the tension of the tape wound by the take-up reel on a scale. In a cassette torque meter that is mounted on a tape recorder and measures the tape drive force of the tape recorder from the instructions on the scale, a scale is provided on both sides of the torque-measuring feed reel. It is characterized in that the driving force of different tapes can be measured.

In the present invention, the above-mentioned torque measuring feed reel is provided with a vortex spring, and the vortex spring expands and contracts due to the tension of the tape wound by the take-up reel to indicate the tape driving force to the scale. Is configured.

Further, in the cassette torque meter of the present invention, the scales provided on both sides of the torque measuring feed reel are provided at positions symmetrical to each other, and the scales of the torque measuring feed reel are provided. It is possible to measure the drive force of a normal play tape on one side and the drive force of a reverse play tape on the other side.

The cassette torque meter of the present invention can be used for measuring the tape driving force of compact cassette tape recorders and micro cassette tape recorders.

[0015]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings based on embodiments.

Embodiment 1 FIG. 1 is a schematic plan view showing an example of a cassette torque meter of the present invention, and FIG. 2 shows a state in which a tape is wound by a spiral spring and a take-up reel of a torque measuring feed reel shown in FIG. FIG. 3 is a schematic cross-sectional view of the torque measuring feed reel. In the figure, A and B indicate side surfaces.

Referring to FIG. 1, a cassette torque meter of the present invention comprises a container 1, a tape 2, a take-up reel 3 for winding the tape 2, and a tension of the tape wound by the take-up reel 3. It is a cassette type meter having a torque measuring feed reel 4 for instructing the board 5a, and has the same shape as a cassette tape.

The take-up reel 3 is rotatably formed. On the other hand, the torque measuring feed reel 4 is formed by a ball bearing mechanism, and the torque measuring feed reel 4 has a scale indicating arrow 8a pointing in the direction of the take-up reel 3 and is fixed to the central portion. A disc 6 and a movable disc 7 having a scale 5a on the outer side of the fixed disc 6 are provided via balls 16 therebetween. Reference numeral 17 is an inertia roller, 18 is a guide roller, and 19 is a winding arm.

As shown in FIG. 3, graduation boards 5 a and 5 b and graduation indicating arrows 8 a and 8 b are provided on both surfaces of the torque measurement feed reel 4. One graduation plate 5a is fixed to the surface of the movable disc 7 by adhesion, and the other graduation plate 5b is fixed to the back face of the movable disc 7 by an adhesive, double-sided adhesion or an adhesive tape 22. Further, one graduation indicating arrow 8a is provided on the front surface of the fixed disc 6, and the other graduation indicating arrow 8b is fixedly provided on the back surface of the fixed disc 6.

FIG. 2 shows a state in which the tape is wound by the vortex spring and the take-up reel of the torque measuring feed reel when seen through the graduation plate 5a of the cassette torque meter shown in FIG. Fitting pieces 9a and 9b are provided at both ends of the tape 2, and the fitting piece 9a at one end of the tape 2 is fitted into the tape fixing hole 10a of the movable disk 7 of the torque measuring feed reel 4. The fitting piece 9b at the other end is fitted and fixed in the tape fixing hole 10b of the take-up reel 3. The torque measuring feed reel 4 is provided with a vortex coil 11, one end of the vortex coil spring 11 is fixed to a spring inner fixing part 12 of the fixed disc 6, and the other end thereof is a spring outer side of the movable disc 7. It is fixed to the fixed portion 13. The fixed disc 6 is provided with two fixing holes 14a and 14b, and the fixing pins 15a and 15b are fitted into the fixing holes 14a and 14b to fix the fixed disc 6 to the container.

In order to measure the tape driving force of the tape recorder using the surface of the cassette torque meter shown in FIG. 1, the tape with the surface of the cassette torque meter of FIG. When the tape 2 is mounted on a recorder and driven, the tape 2 is taken up by the take-up reel 3 having the tip of the tape 2 fixed, and the tape 2 moves from the side B to the direction A, that is, the direction of the arrow E. Since the other end of the coil is fixed to the movable disk 7 of the torque measuring feed reel 4, the spiral spring 11 contracts due to the tension of the tape and the movable disk 7 rotates, and at the same time the movable disk 7 is installed. The graduated scale 5a is rotated, and the tape driving force of the tape recorder can be measured from the indication on the graduated scale by the scale indicating arrow 8a on the fixed disk 6.

Next, FIG. 4 is a schematic bottom view of the cassette torque meter of FIG. 1, and FIG. 5 is an explanatory view showing a state in which the tape is wound by the spiral spring and the take-up reel of the torque measuring feed reel of FIG. It is a figure.

FIG. 4 shows a scale torque measuring reel of the cassette torque meter shown in FIG. 1 provided with a scale 5b on the side opposite to the side where the scale 5a is provided. A graduation indicating arrow 8b is provided at the center of the fixed disk 6, and the arrow points in the direction of the take-up reel 3. FIG. 5 shows a state in which the tape is wound by the vortex spring and the take-up reel of the torque measuring feed reel when seen through the scale plate 5b of the cassette torque meter shown in FIG.

1 and 4 use the same spiral spring 11 of the torque measuring feed reel 4, and therefore the movable disk 7 is rotated by the tension of the tape and the spiral spring 11 contracts in the same direction. Therefore, by providing a scale plate 5b as shown in FIG. 4 on the back side of the scale plate 5a of the feed reel for torque measurement in FIG. 1, a meter which can use both sides can be obtained.

In order to measure the tape driving force of the tape recorder using the surface of the cassette torque meter shown in FIG. 4, when the cassette torque meter of FIG. When the tape 2 is wound by the take-up reel 3 having the tip of the tape 2 fixed, and the tape 2 moves in the direction from the side B to A, that is, in the direction of the arrow F 2, the other end of the tape 2 has a torque measuring feed reel. Since it is fixed to the movable disc 7 of No. 4, the vortex spring 11 contracts due to the tension of the tape and the movable disc 7 rotates, and at the same time, the scale plate 5b provided on the movable disc 7 rotates to fix the fixed disc. The tape driving force of the tape recorder can be measured from the instruction of the scale board by the scale instruction arrow 8b of the plate 6.

As described above, in order to measure the tape driving force of the tape recorder using both sides of the cassette torque meter of the present invention, first attach the cassette torque meter of FIG. When driven, the tape 2 is taken up by the take-up reel 3, the tape 2 moves from the side surface B to the side surface A, that is, in the direction of arrow E, and the scale 5a rotates in the counterclockwise direction (direction e). , The scale indication arrow 8a is used to indicate the scale. Next, when the cassette torque meter of FIG. 1 is turned over and the cassette torque meter of FIG. 4 is mounted on the tape recorder with the face up, the tape 2 is driven from side B to side A, that is, in the direction of arrow F. The scale 5b (direction of f) is rotated clockwise, and the scale is instructed by the scale instructing arrow 8b.

Therefore, in the cassette torque meter of the present invention, since the scale plates 5a and 5b are symmetrically provided on both sides of the torque measuring feed reel 4, the front and back surfaces of the cassette torque meter are used. Then, the tape driving force that moves in two directions can be measured. For example, it is possible to measure the normal drive tape drive force on the front surface of the cassette torque meter, and if the cassette torque meter is flipped over and mounted on the tape recorder, the reverse drive tape drive force can be measured on the back surface of the cassette torque meter. It is possible to measure two tape drive forces with one cassette torque meter.

The cassette torque meter of the present invention can be used for measuring the tape driving force of compact cassette tape recorders and micro cassette tape recorders.

[0029]

[Effect of device]

 As described above, according to the present invention, the tape driving force can be measured on both sides by providing the scales on both sides of the cassette torque meter. The tape drive force of play and replay can be measured.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an example of a cassette torque meter of the present invention.

FIG. 2 is an explanatory diagram showing a state where a tape is wound by a vortex winding spring and a take-up reel of the torque measurement feed reel of FIG.

FIG. 3 is a schematic cross-sectional view of a torque measurement feed reel.

FIG. 4 is a schematic bottom view of the cassette torque meter of FIG.

5 is an explanatory diagram showing a state where a tape is wound by a vortex winding spring and a take-up reel of the torque-measuring feed reel shown in FIG. 4;

FIG. 6 is an explanatory diagram showing a cassette torque meter for measuring a tape driving force of a conventional tape recorder.

[Explanation of symbols]

 1 Container 2 Tape 3 Take-up reel 5a, 5b Scale board 4 Torque measuring feed reel 6 Fixed disk 7 Movable disk 8a, 8b Scale indication arrow 9a, 9b Fitting piece 10a, 10b Tape fixing hole 11 Swirl spring 12 Spring Inner fixed part 13 Spring outer fixed part 14a, 14b Fixed hole 15a, 15b Fixed pin 16 Ball 17 Inertial roller 18 Guide roller 19 Winding arm 20, 21 Hole 22 Double-sided adhesive or adhesive tape A, B Side e, f Scale plate Rotation direction E, F Tape movement direction 51 Container 52 Tape 53 Take-up reel 54 Torque measuring feed reel 55 Scale plate 56 Fixed disc 57 Movable disc 58 Scale indication arrow 59 Ball

Claims (6)

[Scope of utility model registration request] 1. A tape recorder comprising: a container; a tape; a take-up reel for winding the tape; and a torque-measuring feed reel for indicating the tension of the tape wound by the take-up reel on a scale. In a cassette torque meter that is mounted and measures the tape drive force of a tape recorder from the instructions on the scale, scales are provided on both sides of the torque measurement feed reel, and the drive force of the tape in different directions on each side is measured. A cassette torque meter characterized by being able to measure. 2. The torque measuring feed reel is provided with a spiral spring, and the spiral spring expands and contracts by the tension of the tape wound by the take-up reel to indicate the tape driving force on the scale. Cassette torque meter. 3. The cassette torque meter according to claim 1, wherein the positions of scale plates provided on both sides of the torque measuring feed reel are symmetrical to each other. 4. The drive force of a normal play tape is measured on one surface on which the scale of the torque measuring feed reel is provided, and the drive force of a reverse play tape is measured on the other surface. The cassette torque meter according to any one of 1 to 3. 5. The cassette torque meter according to claim 1, wherein the tape recorder is a compact cassette tape recorder. 6. The cassette torque meter according to claim 1, wherein the tape recorder is a micro cassette tape recorder.