JPH0684536U - Recording medium positioning device - Google Patents

Abstract

(57) [Summary] [Purpose] To properly record and reproduce information on a recording medium. A reference pin 7 fitted into a cross-shaped pin insertion hole 18 of the DCC body 10A is arranged so as to be urged upward by the urging force of a spring 7e, and when the loading is completed, it is urged by the spring 7e. Since the reference pin 7 is evenly elastically fitted into the pin insertion hole 18 with no clearance, even when external vibration is applied to the DCC main body 10A, the horizontal direction of the DCC main body 10A is increased. The stable position is maintained without rattling at the reference position in. [Effect] Since the rattling of the DCC main body 10A in the horizontal direction is eliminated, the adverse effects of the error rate during reproduction and the envelope waveform during search are reduced.
Problems such as deterioration of sound quality, skipping, and inaccurate search can be solved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium positioning device that improves the positioning accuracy of a recording medium such as a DCC (digital compact cassette) half at a recording / reproducing position.

[0002]

[Prior art]

 In recent years, a magnetic recording / reproducing apparatus has been developed that enables high-quality digital recording / reproduction on a DCC of the same size as a conventional C cassette and at the same time reproduces the C cassette as it is. DCC is a recording / playback system that adopts a digital system, and can record and playback with sound quality similar to that of a CD.

FIG. 1 shows an example of the configuration of such a magnetic recording / reproducing apparatus. On both sides of a magnetic head 2 mounted on a mechanical chassis 1, a rotating shaft 3a is used as a fulcrum to rotate. A pinch roller 4 rotatably attached to the arm 3 is provided. The pinch roller 4 is brought into pressure contact with the capstan shaft 5 by the rotation of the rotation arm 3 at the time of recording / reproducing of the magnetic tape 14 described later. On the inside of each capstan shaft 5, a reference pin 7 and a positioning pin 8 are provided so as to project. The reference pin 7 defines a reference position in the horizontal direction of the DCC half 10 described later. A reel stand 6 is rotatably arranged at a substantially central portion of the mechanical chassis 1.

FIG. 2 shows a DCC half reproduced by the magnetic recording / reproducing apparatus shown in FIG. 1, and a label (not shown) indicating the contents of recorded information is attached to the back side of the DCC half 10. On the DCC body 10A of the DCC half 10, a shutter 11 which is normally urged toward the closed side by a spring (not shown) is slidably arranged. Further, the DCC main body 10A is provided with reel windows 12 and 13, running windows 15 and 16 for the magnetic tape 14 and pin insertion holes 17 and 18, which are covered by a shutter 11 moving in a closing direction. It is being appreciated.

Here, the pin insertion hole 17 of the DCC body 10 A is fitted into the positioning pin 8 described above, and the shape of the pin insertion hole 17 is a circular shape fitted to the cylindrical positioning pin 8. Has been done. Further, the pin insertion hole 18 of the DCC body 10A is fitted into the reference pin 7, and the shape of the pin insertion hole 18 is the same as the reference pin 7 having a cross shape.

That is, as shown in FIGS. 3 and 4, the reference pin 7 has a tapered taper shape, and the cross shape is traced by the recesses 7 b formed at four positions around the shaft portion 7 a. The pin insertion hole 18 to be inserted is also in a cross shape.

The shutter 11 has a reel opening window 19 that opens the reel window 13 when it moves in the opening direction, an opening window 20 that opens the traveling window 16, and pin insertion holes 17 and 18 opening windows 21 and 22. Is provided. Further, the DCC body 10A is provided with an identification hole 23 for identifying the tape length and the type of tape and a recording prevention hole 25 having a slidable movable pin 24.

In the magnetic recording / reproducing apparatus having such a structure, as shown in FIG. 5, when the DCC main body 10 A is loaded on the mechanical chassis 1 to a position just before recording / reproducing, a shutter opening / closing mechanism (not shown) is used. The shutter 11 is pushed open in the opening direction. As a result, the pin insertion holes 17 and 18 and the reel windows 12 and 13 are opened, so that the tip ends of the reference pin 7 and the positioning pin 8 are first fitted into the pin insertion holes 17 and 18 when the DCC main body 10A descends. Then, the tip of the reel stand 6 is fitted into the reel windows 12 and 13.

In this state, when the DCC body 10A continues further descending and moves until it comes into contact with the height regulating member 9 protruding on the mechanical chassis 1, the height of the DCC body 10A is regulated and By completely fitting the reference pin 7 into the pin insertion hole 18, the reference position in the horizontal direction of the DCC body 10A is determined.

[0010]

[Problems to be solved by the device]

 As described above, in the above-described conventional magnetic recording / reproducing apparatus, the reference pin 7 is fitted into the pin insertion hole 18 of the DCC body 10A to determine the horizontal reference position of the DCC body 10A. .

However, in such a horizontal positioning regulation, since there is some clearance between the reference pin 7 and the pin insertion hole 18, the reference pin 7 is completely inserted in the pin insertion hole 18. Even when it is fitted and the reference position in the horizontal direction is determined, if the external vibration or the like is applied, the DCC main body 10A may be somewhat loosened due to the above clearance.

As described above, when the DCC main body 10A is slightly loosened, the relative position between the magnetic tape 14 and the magnetic head 2 is deviated, and the error rate during reproduction and the envelope during search are increased. The waveform is adversely affected, and in addition to deterioration in sound quality, skipping, and the like, problems such as inaccurate search cannot occur. For this reason, strict design accuracy is required for the position of the reference pin 7 that should be projected on the mechanical chassis 1.

The present invention has been made in consideration of such a situation, and by appropriately increasing the horizontal positioning accuracy of the recording medium at the recording / reproducing position with a simple structure, it is possible to appropriately record / reproduce information on / from the recording medium. It is an object of the present invention to provide a recording medium positioning device that can be performed by a computer.

[0014]

[Means for Solving the Problems]

 In order to achieve the above object, a recording medium positioning device of the present invention is provided at a recording / reproducing position of a magnetic recording / reproducing device, and is fitted into a reference hole provided in the recording medium to record the magnetic recording medium. It is characterized by comprising a reference pin positioned at a predetermined position of the reproduction position and an elastic member for urging the reference pin in the unloading direction of the magnetic recording medium.

[0015]

[Action]

 In the recording medium positioning device of the present invention, when the loading of the recording medium to the recording / reproducing position is completed, the reference pin provided in the recording / reproducing position is fitted into the reference hole provided in the recording medium so that the recording medium can be recorded. A horizontal reference position is defined. At this time, when the reference hole of the recording medium fits into the reference pin, the reference pin is evenly pressed against the reference hole by the urging force of the elastic member. And the adverse effects of the error rate during playback and the envelope waveform during search are reduced, so problems such as deterioration of sound quality, skipping, and inaccurate search can be solved.

[0016]

【Example】

 Hereinafter, details of embodiments of the present invention will be described with reference to the drawings. In the drawings described below, the same parts as those in FIGS. 1 to 5 are designated by the same reference numerals, and a duplicate description will be omitted.

6 and 7 show an embodiment of a recording medium positioning device of the present invention, in which a magnetic head 2, a reel stand 6, a positioning pin 7 and a height regulating member 9 are provided on a mechanical chassis 1. Is provided.

As described above, the reference pin 7 has a tapered shape in which the recess 7b is formed in the shaft portion 7a. Below the shaft portion 7a of the reference pin 7, there is provided a support shaft 7c having a flange portion 7g and a stopper fitting 7d attached to the lower end portion. The support shaft 7c is inserted through the insertion hole 1a of the mechanical chassis 1 and the support metal fitting 7f attached to the lower surface side of the mechanical chassis 1, and the flange portion 7g and the stopper metal fitting 7d are attached to the mechanical chassis 1 and the support metal fitting 7f. The abutment prevents the reference pin 7 from being detached from the mechanical chassis 1. Further, since the flange portion 7g is biased by the spring 7e interposed in the support shaft 7c, even if the reference pin 7 is pushed in, it is pushed up to a fixed position by the biasing force of the spring 7e. It has become.

Next, the operation of the recording medium positioning device having such a configuration will be described with reference to FIG.

First, when the DCC main body 10 A is loaded, the DCC main body 10 A is conveyed with the shutter 11 facing the mechanical chassis 1. When the DCC main body 10A is loaded to a position just before recording / reproducing on the mechanism 1 shown in FIG. 6, the shutter 11 is pushed in the opening direction by a shutter opening / closing mechanism (not shown). As a result, the pin insertion holes 17 and 18 and the reel windows 12 and 13 are opened, so that the tip ends of the reference pin 7 and the positioning pin 8 are first fitted into the pin insertion holes 17 and 18 when the DCC main body 10A descends. Then, the tip of the reel stand 6 is fitted into the reel windows 12 and 13.

In this state, when the DCC body 10A continues further descending and moves until it abuts on the height regulating member 9 protruding on the mechanical chassis 1, the height of the DCC body 10A is regulated and By completely fitting the reference pin 7 into the pin insertion hole 18, the reference position in the horizontal direction of the DCC body 10A is determined.

At this time, the outer peripheral portion of the shaft portion 7a of the reference pin 7 comes into contact with the opening edge portion of the pin insertion hole 18, and the reference pin 7 is slightly pushed down against the urging force of the spring 7e. Since the reference pin 7 is elastically contacted with the pin insertion hole 18 evenly by the urging force of and the pin insertion hole 18 is fitted into the reference pin 7 with no clearance, even when external vibration is applied, It is maintained in a stable state without rattling at the reference position in the horizontal direction.

9 and 10 show another embodiment in which the configuration of the reference pin 7 of FIG. 6 is changed, and in this example, a leaf spring 25 is adopted instead of the spring 7e. That is, the screws 27 mounted on the mechanical chassis 1 are fitted into the loose fitting holes 26 formed at both ends of the leaf spring 25. A flange portion 7g provided below the shaft portion 7a of the reference pin 7 is fixed to the central portion of the leaf spring 25. A support shaft 7h provided below the flange portion 7g is inserted and supported in a shaft insertion hole 1a formed in the mechanical chassis 1.

With such a configuration, when a pressing force acts on the reference pin 7, the loose fitting hole 26 into which the screw 27 is fitted moves, and the central portion of the leaf spring 25 shifts downward. When the pressing force against the reference pin 7 is released, the elastic force of the plate spring 25 causes the central portion of the plate panel 25 to move upward, so that the reference pin 7 returns to the fixed position. Therefore, when the DCC main body 10A is loaded to the recording / reproducing position and the reference pin 7 is fitted into the pin insertion hole 18 of the DCC main body 10A, the elastic force of the leaf spring 25 causes the reference pin 7 to enter the pin insertion hole 18. On the other hand, since it is elastically evenly fitted without any clearance, similarly to the above, even when external vibration is applied, the reference position in the horizontal direction is maintained in a stable state without rattling.

As described above, in each of the above embodiments, the reference pin 7 fitted into the cross-shaped pin insertion hole 18 of the DCC body 10A is biased upward by the biasing force of the spring 7e or the leaf spring 25. When the loading is completed, the reference pin 7 is uniformly elastically fitted into the pin insertion hole 18 by the biasing force of the spring 7e or the leaf spring 25 without the clear clearance. On the other hand, even when external vibration is applied, the DCC body 10A is maintained in a stable state without rattling in the horizontal reference position.

Therefore, since the rattling of the DCC main body 10A in the horizontal direction is eliminated, the adverse effects of the error rate at the time of reproduction and the envelope waveform at the time of search are reduced, so that the deterioration of sound quality, skipping, and accurate search can be achieved. Problems such as not being able to be solved are resolved. Further, since the reference pin 7 is fitted into the pin insertion hole 18 with no clearance by the urging force of the spring 7e or the leaf spring 25, the pin insertion holes 17 and 18 and the reference pin 7 can be inserted as in the conventional case. Also, the strictness in design accuracy with the positioning pin 8 is relaxed.

[0027]

[Effect of device]

 As described above, according to the recording medium positioning device of the present invention, when the loading of the recording medium to the recording / reproducing position is completed, the reference pin provided in the recording / reproducing position is provided in the reference hole provided in the recording medium. By fitting in, the horizontal reference position of the recording medium is determined. At this time, when the reference hole of the recording medium is fitted into the reference pin, the reference pin is evenly pressed against the reference hole by the urging force of the elastic member, so that there is no rattling of the recording medium due to the clearance between the reference pin and the reference hole. Since the adverse effects of the error rate during playback and the envelope waveform during search are reduced, problems such as deterioration of sound quality, skipping, and inaccurate search can be solved.

Therefore, the positioning accuracy of the recording medium in the horizontal direction at the recording / reproducing position can be improved with a simple configuration, and thus the recording / reproducing of information on the recording medium can be appropriately performed.

[Brief description of drawings]

FIG. 1 is a plan view showing a configuration example of a conventional magnetic recording / reproducing apparatus.

FIG. 2 is a D reproduced by the magnetic recording / reproducing apparatus of FIG.
It is a top view which shows CC.

3 is a view showing the positioning pin of FIG. 1 and the positioning pin insertion hole of FIG.

4 is a cross-sectional view showing a state in which the positioning pin of FIG. 1 is inserted into the positioning pin insertion hole of FIG.

5 is a diagram illustrating a magnetic recording / reproducing apparatus of FIG.
6 is a diagram for explaining a state in which the DCC of FIG.

FIG. 6 is a view showing an embodiment of a recording medium positioning device of the present invention.

7 is a sectional view showing a state in which a positioning pin is inserted into a positioning pin insertion hole of FIG.

FIG. 8 shows a DC recording / reproducing position of the magnetic recording / reproducing apparatus of FIG.
It is a figure for explaining the state where C is set.

9 is a diagram showing another embodiment in which the configuration of the positioning pin of FIG. 6 is changed.

10 is a plan view showing the leaf spring of FIG. 9. FIG.

[Explanation of symbols]

 1 Mechanical Chassis 2 Magnetic Head 7 Reference Pin 7e Spring 9 Height Control Member 10A DCC Main Body 17,18 Pin Insertion Hole 25 Leaf Spring

Claims (1)

[Scope of utility model registration request] 1. A reference pin which is provided at a recording / reproducing position of a magnetic recording / reproducing apparatus and which is fitted into a reference hole provided in a recording medium to position the magnetic recording medium at a predetermined position of the recording / reproducing position. A recording medium positioning device comprising: an elastic member for urging the pin in the unloading direction of the magnetic recording medium.