JPH04360053A - Recording or reproducing device - Google Patents

Abstract

PURPOSE:To accurately perform the positioning of a movable member in which a guide post for winding a tape on a drum is installed. CONSTITUTION:A Movable member in which a guide post is installed and a positioning member for performing the positioning of a prescribed position of this movable member are provided. The positioning member has a part 15 having a V groove performing the positioning in the advancing direction of the movable member and a part 14 having a parallel groove performing the positioning in a vertical direction to the advancing direction within the surface in which the positioning of the movable member is performed. The part 15 having the V groove is constituted so that it is capable of moving and adjusting in the relevant vertical direction. Thus, the positioning of the movable member can be performed rapidly, easily and accurately by a simple structure.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording or reproducing apparatus, and more particularly to a positioning mechanism for a guide post in a recording or reproducing apparatus.

0002

2. Description of the Related Art Conventionally, devices of this type are shown in FIGS. 5 to 8. In a device that performs recording or reproduction by winding a magnetic tape 3 around a rotating drum 4, a guide post 2 is provided for pulling out the tape 3.
2 is planted on a movable block 18 which is a movable member,
8. Move the cassette 24 from inside the opening to a predetermined position.
As shown in the example shown in FIG. 2, a tape path 26 is formed above the bottom plate 23, but the positioning accuracy of the block 18 at this predetermined position is very important, and if this positioning is not stable, the guide will be damaged every time it is loaded. Since the tilted position of the post 22 changes and the tape 3 cannot run stably, high-quality recording or reproduction cannot be expected.

In FIGS. 5 and 6, the movable block 1
8, the upper part of the roller guide shaft 19 is brought into contact with a part 20 having a V groove provided in a catcher 25, which is a positioning member, and the lower part of the shaft 19 is fitted into a part 21 having a long groove of the catcher 25. By doing so, the position is determined and a moment is applied to the entire movable block 18 in the direction of arrow G, and the tip and rear part of the movable block 18 are moved to the catcher 2.
5, the general mechanism is to determine the fall by pressing against it.

[0004]Furthermore, the portion 20 having the V groove and the portion 21 having the long groove of the catcher 25 are often formed as an integral part. has been used.

[0005]

However, in the conventional example, as shown in FIG.
The center of the portion 21 having the long groove may shift, making the catching (positioning) unstable. Therefore, the center of the portion 21 having the long groove must be aligned as much as possible. Extremely high precision is required, and even if they are made integrally with a mold, the part 20 with the V groove and the part 21 with the long groove will have to be finished by secondary processing, both of which are expensive. There was a problem with this.

[0006] This invention was made to solve the above-mentioned problems, and includes a first positioning portion having a V-groove that can be moved and adjusted in a direction perpendicular to the moving direction of the movable member. The purpose of this invention is to provide a recording or reproducing device that can perform positioning with high accuracy at a low cost. If the part having the V groove is separated from the part having the parallel groove, the precision of each part is not required as much, and the purpose is to provide a recording or reproducing device that is easy to manufacture at a lower cost. There is.

[0007]

[Means for Solving the Problems] Therefore, in the present invention, a movable member is provided with a guide post for pulling out a tape from a cassette and winding it around a rotating drum;
The positioning member includes a first positioning part that positions the movable member in the traveling direction, and a second positioning part that positions the movable member in a direction perpendicular to the traveling direction within a plane in which the movable member is positioned. The above object is achieved by configuring the first positioning section to be movable and adjustable in the vertical direction.

[0008] By making the first positioning part separate from the second positioning part, the accuracy of each part is not required so much and it is easy to manufacture.

[0009]

[Operation] Since the first positioning section is configured to be movable and adjustable in a direction perpendicular to the direction of movement of the movable member, accurate positioning can be easily and quickly performed. Furthermore, by making the first positioning section separate from the second positioning section, the accuracy of each component is not required so much and it is easy to manufacture.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a state in which the movable block is positioned, FIG. 2 is a side view of the same, FIG. 3 is an explanatory diagram for assembling the catcher of one embodiment, and FIG. 4 is an explanatory diagram showing the same loading completed state. In FIGS. 1 and 2, 1 is a movable block which is a movable member, and includes a vertical shaft 2 fitted with a rotating roller 6 and an inclined post for defining the direction of incidence of the tape 3 onto a drum 4, which is a rotating drum. 5 has been planted. A rotating roller 6 is fitted onto the vertical shaft 2 via a bearing (not shown), and the fitted rotating roller 6 is held between flanges 8, 8. Reference numeral 9 denotes a guide plate, and a bush 10, which is threaded in the center with a tap (not shown), is caulked and fixed to the guide plate 9. It is fixed to the bush 10 with screws 12. During loading, the movable block 1 is moved along the rail 11 by a loading arm (not shown), a loading path is determined, and as in the example shown in FIG.
A tape path 26 is formed above the movable block 1, and the movable block 1 is positioned at a predetermined position.

Further, the gap between the movable block 1 and the guide plate 9 is set to be slightly larger than the thickness of the rail 11 by making the large diameter portion 10a of the bush 10 thicker. Reference numeral 13 denotes a catcher 13 which is a positioning member for positioning the movable block 1, and a portion 1 having parallel grooves, which is a second positioning part, is provided at the lower part of the catcher 13.
4 stands out. Additionally, a positioning pin 16 is provided at the top.
, 16 are press-fitted, and a portion 15 having a V-groove, which is a first positioning portion, is positioned by positioning pins 16, 16, and can be fixed with screws. The pin fitting portion of the portion 15 having the V groove is formed in the elongated holes 15b, 15b.
It is configured to be adjustable in the direction of arrow F.

Next, positioning upon completion of loading will be explained. When loading a cassette, the vertical post 7 and the inclined post 5, which are the guide posts 22, are located within the opening of the cassette, and when loading, the movable block 1
, and wind the tape 3 around the drum 4. Large diameter portion 2a of vertical shaft 2 and large diameter portion 10a of bush 10
fits into the groove 11a of the rail 11, and this groove 11a
A loading arm (not shown) engages the small diameter portion 10b of the bushing and pushes it in the direction of arrow C, so that the movable block 1 is moved along the rail 1.
1 along the groove 11a. When the movable block 1 reaches a predetermined position, the small diameter portion 2b of the vertical shaft 2 fits into the parallel groove 14a of the portion 14 having parallel grooves of the catcher 13, and at the same time, the contact portion 2c of the vertical shaft 2 fits into the V-groove. The movable block 1 comes into contact with the V-groove 15a of the portion 15, and the movable block 1 stops. From this state, due to the loading charge operation, the small diameter portion 10b of the bush 10 is moved from the loading arm to the small diameter portion 10b of the bush 10.
As a result, the movable block 1 moves in the direction of arrow B (Fig. 1) and the direction of arrow D (Fig. 2) centering on the V groove 15a. A moment acts on the shaft, rotation in the B direction is restricted by the large diameter portion 10a of the bush 10 coming into contact with the side surface of the groove 11a of the rail, and rotation in the D direction is restricted by the large diameter portion 10a of the bush 10 coming into contact with the side surface of the groove 11a of the rail.
The upper surface of the catcher 13 is regulated by contacting the collar surface 14b and the bottom protrusion 1b of the movable block 1 contacting the upper surface of the rail 11.

In this way, the movable block 1 is positioned, and the position in the direction of the arrow E is the V-groove 15.
The positions in the directions a and F are respectively determined by the parallel grooves 14a, and the movable block 1 is positioned in the advancing direction and in the vertical direction. The angle of inclination is determined by the contact surfaces of the movable block 1, the catcher 13, and the rail 11. As for the actual assembly work, as shown in the example shown in FIG.
First, let the player catch the ball while keeping it loose. The portion 15 having the V groove moves in position in the direction of the arrow F, and the vertical axis 2
The abutting portions 2c will stop at a position where they firmly abut against both sides of the V-groove 15a, so screw the screws 17 in there. It goes without saying that the centers of the V-groove 15a and the parallel groove 14a may be aligned and fixed in advance using a jig or the like without actually positioning them. A recording or reproducing apparatus according to an embodiment of the present invention includes a movable block 1 having an inclined post 5 and a vertical post 7 as guide posts, and a catcher 13 for positioning the movable block 1 at a predetermined position. The catcher 13 includes a portion 15 having a V groove 15a for positioning the movable block 1 in the direction of movement, and a portion 14 having a parallel groove 14a for positioning the movable block 1 in a direction perpendicular to the direction of movement within the plane in which the movable block 1 is positioned. By configuring the portion 15 having the V groove to be movable and adjustable in the vertical direction, the catcher 13 can be adjusted easily and quickly, and positioning with high accuracy is possible. If the portion 15 having the V-groove is made separate from the portion 14 having the parallel groove, the precision of each part is not required so much, and it becomes easier to manufacture.

[0014]

As described above, according to the recording or reproducing apparatus of the present invention, the center of the parallel groove and the center of the V groove can be aligned by configuring the portion of the positioning member having the V groove to be movable and adjustable. The simple structure of fixing the recording or reproducing device by using inexpensive parts has the effect of providing a recording or reproducing device at low cost that enables highly accurate positioning using inexpensive parts. If the part having the V-groove is made separate from the part having the parallel groove, manufacturing becomes easy and positioning with high precision becomes possible.

[Brief explanation of drawings]

[Figure 1] Plan view showing one embodiment

[Figure 2] Partially cutaway side view of one embodiment

[Figure 3]
Assembly explanatory diagram of a catcher in one embodiment

[Figure 4] Explanatory diagram showing loading completion status

[Figure 5] Perspective view showing a conventional movable block and catcher

[Figure 6] Partially cutaway side view of conventional example

[Figure 7]
Explanatory diagram showing the relationship between the center positions of the V groove and the long groove in the conventional example

[Fig. 8] Explanatory diagram showing the loading completion state of the conventional example

[Explanation of symbols]

1 Movable block 3 Tape 4 Rotating drum 5　Slanted post 7 Vertical post 13 Catcher 14 Part with parallel grooves 15 Part with V groove 22 Guide post

Claims (2)

[Claims] Claim 1: A device that pulls out a tape from a cassette, wraps it around a rotating drum, and performs recording or playback; a first positioning section comprising a positioning member for positioning the movable member in the direction of movement of the movable member;
The movable member is characterized in that it has a second positioning part that performs positioning in a direction perpendicular to the direction of movement within a plane in which the movable member is positioned, and the first positioning part is configured to be movable and adjustable in the vertical direction. Recording or playback equipment. Claim 2: Claim 1, wherein the first positioning part is separate from the second positioning part.
Recording or playback equipment as described.