JP3435983B2 - Magnetic recording / reproducing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing device.

[0002]

2. Description of the Related Art In recent years, a number of video cameras equipped with a monitor screen section as a housing separate from a video tape recorder (hereinafter referred to as VTR section) have been released.
The monitor screen is parallel to the TR, and V
A video camera that has an axis that rotates at a position where the monitor screen is opened almost vertically with respect to the TR section and that has a monitor screen that rotates about an axis that is substantially perpendicular to the VTR section simultaneously performs these two axis rotations. In that case, there is a possibility that the VTR portion and the monitor screen portion may come into contact with each other and scratch any of the housings.

Further, a video camera having a rotary shaft mechanism so as not to rotate two axes at the same time becomes a rotary shaft mechanism having a large space in a casing of a VTR section, and a mechanism for preventing the miniaturization of the video camera is provided. Had.

The structure of a conventional rotary shaft mechanism will be described below. FIG. 6A is an enlarged perspective view of a main part of a conventional rotary shaft mechanism, which illustrates a rotary support shaft a fixed to the VTR unit 1.
No. 19 and a rotary support shaft b 20 are provided, and there is a fixed plate 21 fitted to each shaft and rotatable. A rotary boss 14 is fixed to the fixed plate 21, and a rotary shaft 15 is rotatably passed through the rotary boss 14. The monitor screen portion 2 is fixed to one end and the other end is fixed to the other end. Is the rotation control piece 16
Is fixed. The rotation control piece 16 has a circular shape in which two opposite outer shapes are cut by a straight line, and a rotation control plate a 17 and a rotation control plate b 18 fixed to the VTR unit 1 are provided on both side surfaces. ing.

The operation of the conventional rotary shaft mechanism configured as described above will be described below.

First, the monitor screen portion 2 is set to the position of the rotary spindle a.
9 and the rotation support shaft b 20 are opened in the direction of arrow a. At this time, the rotation control piece 16 fixed through the monitor screen portion 2 and the rotation shaft 15 is sandwiched in close contact with the rotation precision plate a 17 and the rotation control plate b 18 with straight portions on both sides. The monitor screen portion 2 which is in the non-rotatable state and fixed through the rotary shaft 15 is also controlled in the non-rotatable state.

However, at the position where the monitor screen 2 is further opened in the direction of the arrow a and the monitor screen portion 2 is opened substantially perpendicular to the VTR portion 1, the rotation control piece 16 is rotated as shown in FIG. 6B. Since the plate a 17 and the rotation control plate b 18 are located in the widened portions, they can be rotated in the direction of the arrow b, and the monitor screen portion 2 fixed through the rotation shaft 15 also rotates. Controlled to a possible state. Further, in this state, when the monitor screen 2 is rotated in the direction of the arrow b and the monitor screen 2 is closed in the opposite direction of the arrow a, the rotation control piece 16 fixed through the rotary shaft 15 and the monitor screen 2 is provided. As shown in FIG. 6 (c), since the circular arc portions are located on both sides of the rotation control plate a 17 and the rotation control plate b 18, the rotation control plate a 17 and
Do not put it in the narrow part of the width 18 of the rotation control plate b,
The monitor screen 2 was a rotating shaft mechanism controlled in a state in which it could not be closed in the direction opposite to the arrow a.

[0008]

However, in the above-mentioned conventional configuration, the rotation control piece 1 is placed in the housing of the VTR section.
6, a rotation axis mechanism such as 17 of the rotation control plate a and 18 of the rotation control plate b is required, and a large space is taken, so that there is a big problem that the miniaturization of the video camera can be prevented.

The present invention solves the above-mentioned conventional problems and has a control mechanism in which two axes do not rotate simultaneously, and the VT
An object of the present invention is to provide a rotation axis control mechanism of a magnetic recording / reproducing apparatus that enables downsizing of a video camera without using the internal space of the housing of the R portion.

In order to achieve this object, a rotating shaft mechanism of a magnetic recording / reproducing apparatus of the present invention is fitted to a rotating shaft member fixed to a first casing having a VTR portion and an outer circumference of the rotating shaft member. There is a combined cylindrical rotating member, the cylindrical rotating member is rotatable around the outer periphery of the rotating shaft member, and a second screen is provided with a monitor screen portion on a rotating shaft in a direction orthogonal to the rotating shaft member. The second casing is fitted to a casing so that the second casing is rotatable, and a movable shaft movable in a direction orthogonal to the rotating shaft member is provided inside the tubular rotating member . In the case
Has a recess or hole into which one end of the movable shaft can be fitted.
Further, the rotary shaft member has a structure of a rotary shaft mechanism provided on the outer periphery of the rotary shaft member with a recess or a hole into which the other end of the movable shaft can be fitted , and one end of the movable shaft has the second casing. A recess in the body
The cylindrical rotating member can rotate when it is fitted into the hole or the hole.
However, the rotation of the second housing becomes impossible,
Note that the second housing is substantially vertical to the first housing.
And the one end of the movable shaft is attached to the second housing.
The other end of the movable shaft is pushed out from the recess or hole
When fitted to the recess or hole of the rotary shaft member,
While the cylindrical rotating member cannot rotate, the second casing
Has a structure characterized by being rotatable.

[0011]

With this configuration, the rotary shaft mechanism of the magnetic recording / reproducing apparatus can be obtained which hardly uses the internal space of the first housing provided with the VTR section and enables the miniaturization of the video camera.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a magnetic recording / reproducing device comprising a first casing having a recording / reproducing unit and a second casing having a monitor screen. An apparatus is a rotary shaft member fixed to the first casing, and a tubular rotary member fitted to the outer periphery of the rotary shaft member, wherein the tubular rotary member is a first rotary shaft member. Of which the outer periphery is rotatable and which constitutes a second rotating shaft in a direction orthogonal to the rotating shaft member and is fitted with the second cylindrical body, and the second casing is is configured to be rotatable relative to the cylindrical rotary member, the cylindrical inside of the rotary member comprises a movable shaft movable in a direction orthogonal to the rotation axis member, said second casing
Has a recess or hole into which one end of the movable shaft can be fitted.
Includes also the the outer circumference of the rotating shaft member is a rotary shaft mechanism other end of the movable shaft is provided with a fitting recess capable or holes, recesses of one end said second housing of said movable shaft There
The cylindrical rotating member is rotatable when fitted into the hole.
On the other hand, the rotation of the second casing becomes impossible,
At the position where the second housing is substantially vertical to the first housing
It rotates and one end of the movable shaft is provided with a recess of the second housing.
Alternatively, push it out from the hole and move the other end of the movable shaft to the front.
When fitted in the recess or hole of the rotary shaft member, the cylinder
The rotating member becomes non-rotatable, while the second housing rotates.
It is obtained by, characterized in that the rolling can have the effect that the first rotary shaft and second rotary shaft is not rotated at the same time.

[0014]

According to a second aspect of the present invention, one end of the movable shaft is
The other one of the movable shafts for pressing against the second housing.
The second housing is provided with an elastic member arranged at the end, and the second housing is rotated.
When the shaft member is rotated about the first rotation axis to a position that is substantially vertical to the first housing, the second housing is rotated by the cylindrical member.
By rotating the rotating member around the second rotating shaft, the position of the concave portion or the hole portion in the second casing changes, and the movable shaft is moved by the surface other than the concave portion or the hole portion of the rotating shaft member. It is pushed back into the recess or the hole portion provided in the outer periphery fitted, the cylindrical rotary member and said second housing comprises a non-rotatable by the rotating shaft member in a first rotational axis, the second the housing comprises a rotary shaft mechanism is prevented from abutting the first housing, the first housing the second housing and the rotary shaft member to the first rotary shaft with respect to Except when it is rotated to a position that is almost vertical.
The other end abuts against the outer peripheral surface of the rotary shaft member and is not pushed back, and one end of the movable shaft is pressed into a recess or hole in the second housing to be fitted, and the second housing is The tubular rotating member cannot be rotated about the second rotating shaft and has the effect of preventing the second housing from coming into contact with the first housing as described above.

[0016]

In the invention according to claim 3, the movable shaft is the second
The one end on the housing side is spherical, the other end is prismatic and the tip is slanted and thin, and the recess or hole of the rotary shaft member is also formed in the same rectangular shape as the movable shaft. The angular shape secures strength by receiving a load over a wide area against the lateral pressure at the time of fitting, and at the same time the tip of the tip is slanted to be thin so that the movable shaft can be easily moved from the hole of the movable shaft member. Has the effect of exiting.

FIG. 1 shows an embodiment of the present invention.
It will be described with reference to FIG. (Embodiment 1) FIG. 1 is a perspective view showing a recording / reproducing apparatus of the present invention. In FIG. 1, a monitor screen section 2 is provided on a side surface of a VTR section 1, and a rotary shaft mechanism is provided for the VTR section 1. This is a video camera having a structure in which the monitor screen section 2 is rotatable in the directions of arrows a and b.

FIG. 2 shows the inside of the rotary shaft mechanism. The rotary shaft members a of 4 and the rotary shaft member b of 5 are VTRs of 1.
The cylindrical rotary member 3 is fitted around the outer periphery of the rotary shaft member a, and a hole is formed at the center of the wall at one end of the rotary rotary member 3. Yes, the shaft portion projecting from the central portion of the rotating shaft member a of 4 penetrates this hole and is fixed to the rotating shaft member b of 5 with a screw, and the cylindrical rotating member of 3 is the rotating shaft of 4 in the direction of arrow a. The member a is configured to be rotatable about the first rotation axis.

Further, a corrugated leaf spring is fixed to the side of the wall 5 at one end of the cylindrical rotary member 3 to the rotary shaft member b of 5, and a washer is fixed to the side of the rotary shaft member b of 5 to the cylindrical rotary member 3. The corrugated leaf spring 7 is crushed by the wall of the cylindrical rotary member 3 at one end and the washer 6 by fixing the rotary member b of the rotary shaft member a of 4 and the rotary member b of 5 by the screw. Are configured to generate torque.

Further, the cylindrical rotating member 3 has a rotating shaft member a4.
A case 10 having a second rotating shaft in a direction orthogonal to the is fixed by a screw, and a monitor screen fixing plate that is fixed to and integrated with the monitor screen unit 2 is fitted in the case 10. The monitor screen fixing plate 11 is configured so as not to fall off from the case 10 by being rotatable, and holding the pressing and sliding spacers 12 to fix the holding plate 13 with screws.

Inside the cylindrical rotary member 3, there is provided a movable shaft 9 capable of moving four rotary shaft members a in a direction orthogonal to each other, and a coil spring 8 always passes through a hole of a case 10 to a monitor screen fixing plate 11. The rotary shaft member a and the monitor screen fixing plate 11 which are pressed are provided with a square hole and a U groove into which one end of the movable shaft 9 can be fitted.

FIG. 3 is a sectional view of the movable shaft 9 in a direction orthogonal to the rotary shaft member a of 4, and FIG.
And the monitor screen portion 2 are parallel to each other, one end of the movable shaft 9 on the spherical side is pressed by the coil spring 8 into the U groove portion of the monitor screen fixing plate 11, and the monitor screen portion 2 is moved to the second case 10 Even if it is intended to rotate in the direction of the arrow b by using the rotation axis of
Since the movable shaft 9 comes into contact with the outer peripheral surface of the rotating shaft member a of FIG. 4 and the movable shaft 9 cannot move in the direction of arrow c, the monitor screen portion 2 cannot rotate in the direction of arrow b.

In FIG. 3 (b), the rotary shaft member a having a monitor screen portion 2 of 4 with respect to the VTR portion 1 has a rotary shaft member a as a first rotary shaft and is indicated by an arrow a.
3A and the monitor screen 2 cannot rotate in the direction of arrow b with the case 10 as the second rotation axis. .

FIG. 3 (c) shows a state in which the monitor screen portion 2 is rotated in the direction of arrow a with respect to the VTR portion 1 and is positioned in the vicinity of the vertical direction. One end of the movable shaft 9 on the spherical surface side is fixed to the monitor screen by the coil spring 8. It is pressed against the U groove of the plate 11,
When the monitor screen unit 2 is rotated in the direction of arrow b with the case 10 as the second rotation axis, the movable shaft 9 is moved as shown in FIG.
One end of the spherical surface of the movable shaft 9 is pushed out of the U groove portion of the monitor screen fixing plate 11 and moves in the direction of arrow c, and the other end of the movable shaft 9 on the side of the prism is fitted into the square hole of the rotary shaft member a4. In this case, the monitor screen portion 2 can be rotated in the direction of arrow b with the case 10 as the second rotation axis, but conversely it can be rotated in the direction of arrow a with the rotation shaft member a of 4 as the first rotation axis. It is impossible to do so.

Further, FIGS. 4 and 5 are shown in FIGS.
It is an enlarged cross-sectional view of the rotary shaft member a of the movable shafts 9 and 4 when the state changes to (c).
Since one end of the movable shaft 9 fitted to the rotating shaft member a has a prismatic shape, one end of the movable shaft 9 fitted to the cylindrical rotating member 3 is fixed to 4 even when a rotational load is applied in the direction of the arrow a. It is possible for the wall of the square hole of the rotary shaft member a to have a large area and receive a high load. However, when the monitor screen unit 2 is rotated in the direction of the arrow b in FIG. 3D with respect to the second rotation axis in the state in which the rotational load is applied in the direction of the arrow a, the tip shown in FIG. The thin movable shaft 9 is moved by the pressing force of the coil spring 8 in the direction of the arrow c, so that a gap d is generated and the movable shaft 9 can be easily removed from the square hole of the rotary shaft member a4. is there.

However, in the case of the movable shaft 9 having a straight tip shown in FIG. 5, the gap d does not occur even if the movable shaft 9 moves in the direction of the arrow c in the same manner, and it is difficult to slip out from the angular hole of the rotary shaft member a4. Is.

[0028]

As described above, according to the present invention, in the rotating shaft mechanism of the video camera, two axes rotate simultaneously, and the VTR
The video camera can be miniaturized by not contacting the monitor part with the monitor part and using almost no space in the housing of the VTR part.

[Brief description of drawings]

FIG. 1 is a perspective view showing a magnetic recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of an essential part showing the internal structure of a rotary shaft mechanism according to an embodiment of the present invention.

FIG. 3A is a sectional view of a rotating shaft mechanism showing an embodiment of the present invention. FIG. 3B is a sectional view of a rotating shaft mechanism showing an embodiment of the present invention. Sectional view of shaft mechanism (d) Sectional view of rotary shaft mechanism showing one embodiment of the present invention

FIG. 4 is an enlarged sectional view of a main part of a rotary shaft mechanism showing an embodiment of the present invention.

FIG. 5 is an enlarged sectional view of an essential part of a rotary shaft mechanism showing an embodiment of the present invention.

FIG. 6A is a perspective view showing a configuration of a rotary shaft mechanism portion of a conventional example. FIG. 6B is a perspective view showing a configuration of a rotary shaft mechanism portion of a conventional example. Perspective view showing the configuration of the rotating shaft mechanism part

[Explanation of symbols]

1 VTR section 2 Monitor screen section 3 Cylindrical rotating member 4 Rotating shaft member a 5 Rotating shaft member b 6 washers 7 Wavy leaf spring 8 coil spring 9 movable axes 10 cases 11 Monitor screen fixing plate 12 spacers 13 Holding plate

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04N 5/76-5/956 H04N 5/225 G11B 33/06 G09F 9/00

Claims (3)

(57) [Claims] 1. A magnetic recording / reproducing apparatus comprising a first casing having a recording / reproducing unit and a second casing having a monitor screen unit, the magnetic recording / reproducing device being fixed to the first casing. And a tubular rotary member fitted to the outer circumference of the rotary shaft member. The tubular rotary member is rotatable around the outer circumference with the rotary shaft member as the first rotary shaft. A second rotating shaft is formed in a direction orthogonal to the rotating shaft member, is fitted to the second housing, and the second housing is rotatable with respect to the tubular rotating member. And a movable shaft movable in a direction orthogonal to the rotating shaft member is provided inside the cylindrical rotating member, and the second housing has a front part.
The movable shaft has a recess or hole into which one end can be fitted,
The outer periphery of the rotary shaft member is constituted by a rotary shaft mechanism other end of the movable shaft is provided with a fitting recess capable or holes, recesses of one end said second housing of said movable shaft or Hole
The tubular rotating member is rotatable when fitted to
On the other hand, the rotation of the second housing becomes impossible, and the second housing becomes substantially vertical to the first housing.
To the second housing with one end of the movable shaft rotated to a position.
From the recess or hole of the
When the end is fitted into the recess or hole of the rotary shaft member,
While the tubular rotating member cannot rotate, the second casing
A magnetic recording / reproducing device characterized in that the body is rotatable . 2. One end of the movable shaft is pressed against the second casing.
Elastic member disposed at the other end of the movable shaft for
It comprises a first second housing by the rotating shaft member in a first rotational axis
When the second housing is rotated to a position substantially perpendicular to the housing, the second housing rotates about the tubular rotating member as the second rotation axis, whereby the concave portion in the second housing or The position of the hole is changed, and the movable shaft is pushed back by the surface other than the recess or the hole toward the recess or the hole provided on the outer periphery of the rotary shaft member to be fitted, and the tubular rotary member and
Said second housing becomes impossible rotate the rotary shaft member in a first rotational shaft, a rotary shaft mechanism that prevents the second housing abuts against the first housing, and said second housing to said rotating shaft member in a first rotational axis
In the above except it rotates to a position to be substantially perpendicular with respect to the first housing, the other end of the movable shaft is not pushed back in contact with the outer peripheral surface of the rotary shaft member, one end of the movable shaft <br ) Is pressed and fitted into the recess or hole in the second housing, and the second housing becomes unrotatable with the tubular rotating member as the second rotation axis. The magnetic recording / reproducing apparatus according to claim 1, further comprising a rotating shaft mechanism that prevents the second casing from coming into contact with the first casing. 3. The movable shaft has a spherical tip at one end on the side of the second housing, a prismatic end at the other end, and the tip is slanted and slender, and the recess or hole of the rotary shaft member is also the above-mentioned. The magnetic recording / reproducing apparatus according to claim 1 or 2, further comprising a rotating shaft mechanism having an angular shape similar to the movable shaft.