JP4101101B2 - Speaker mounting structure for video cameras - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker mounting structure for a video camera.
[0002]
[Prior art]
The video camera is provided with a speaker for monitoring audio output during tape playback. This speaker is provided on the side wall opposite to the cassette lid (see Patent Document 1), or is provided on the cassette lid a as shown in FIG.
[0003]
FIG. 4 shows a speaker mounting structure for the cassette lid a. A speaker b is attached to the back surface of the cassette lid a using a metal plate c and a screw d. The cassette lid a is attached to the cassette lid chassis f with a screw e.
[0004]
An earth plate g is fastened to one end of the metal plate c with a screw d. When the cassette lid a is attached to the cassette lid chassis f with the screw e, the earth plate g comes into contact with the cassette lid chassis f, and the case of the speaker b is grounded via the metal plate c and the earth plate g. The cassette lid chassis f is rotatably assembled to the mechanical chassis i by engaging the click h at the lower end with the guide groove j of the mechanical chassis i.
[0005]
[Patent Document 1]
JP-A-8-336094 gazette
[Problems to be solved by the invention]
However, in this structure, since the speaker b is attached to the cassette lid a with the metal plate c and the screw d, the number of parts and the number of assembling steps increase, resulting in a cost increase.
[0007]
The present invention has been made in view of such circumstances, and an object thereof is to provide a speaker mounting structure for a video camera that can reduce the number of parts and the number of assembly steps.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, in the speaker mounting structure of the video camera of the present invention, a locking portion for restricting the movement of the speaker in the cassette lid surface direction is provided on the cassette lid, and a pressing portion for pressing the speaker against the cassette lid is provided on the cassette. It is provided on the lid chassis.
[0009]
According to this configuration, when the speaker is engaged with the locking portion of the cassette lid and the cassette lid is attached to the cassette lid chassis, the pressing portion of the cassette lid chassis presses the speaker against the cassette lid. That is, the attachment of the cassette lid and the speaker is completed at the same time.
[0010]
The pressing portion is preferably a spring piece formed by punching a cassette lid chassis.
That is, the spring piece is integrally formed with the cassette lid chassis, which is advantageous in terms of cost.
[0011]
The spring piece is preferably in contact with the speaker case and grounded.
That is, the speaker is grounded using a spring piece that presses the speaker against the cassette lid.
[0012]
It is preferable that the locking portion is a guide wall that protrudes from the cassette lid and contacts the peripheral edge of the speaker.
That is, the guide wall is formed integrally with the cassette lid, which is advantageous in terms of cost.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 5 shows a video camera employing the speaker mounting structure of the present invention.
In this video camera 1, a VTR unit 3 is disposed on the side of the camera unit 2, and a cassette lid 4 is provided on the side wall of the VTR unit 3. The cassette lid 4 is formed with a bulging portion 5 for accommodating a speaker, and a large number of speaker holes 6 are formed at the center of the bulging portion 5.
[0014]
FIG. 1 shows the cassette lid 4 removed from the cassette lid chassis 7.
The cassette lid chassis 7 is rotatably assembled to the mechanical chassis 8 by engaging the click 7 a at the lower end thereof with the guide groove 8 a of the mechanical chassis 8. In the center portion of the cassette lid chassis 7, a hole 7b is punched to form a spring piece (pressing portion) 7c. On the other hand, on the back surface of the cassette lid 4, as shown in FIG. 3, three guide walls (locking portions) 9 extending in the circumferential direction and a pair of boss portions 10 adjacent to the guide walls 9 are provided. .
[0015]
In assembling the cassette lid 4 to the cassette lid chassis 7, the speaker 11 is housed in the guide wall 9 and placed on the back surface of the cassette lid 4, and screws 12 are inserted into the holes 4 a at both lower ends of the cassette lid 4 so 7 is engaged with the hole 7d of the cassette lid 7, while the screw 13 is passed through the hole 7e of the cassette lid chassis 7 to engage the boss 10 of the cassette lid 4 (see FIG. 2).
[0016]
In other words, the movement of the speaker 11 in the surface direction of the cassette lid 4 is restricted by the guide wall 9 and is pressed against the back surface of the cassette lid 4 by the spring piece 7c. At this time, the spring piece 7c of the cassette lid chassis 7 contacts the case 11a of the speaker 11 and is grounded (see FIG. 2). The reason why the speaker 11 is grounded in this way is that when the speaker 11 is charged by electrostatic induction from the speaker hole 6, static electricity may enter the circuit board through the lead wire of the speaker 11 and destroy the IC. .
[0017]
According to this structure, when the cassette lid 4 is assembled, the cassette lid 4 and the speaker 11 can be assembled at the same time by simply placing the speaker 11 in the guide wall 9 and fixing the cassette lid 4 to the cassette lid chassis 7. The number of parts and assembly man-hours can be reduced, and the cost can be greatly reduced.
[0018]
Since the cassette lid chassis 7 is punched to form the spring piece 7c, the spring piece 7c can be formed simultaneously with the cassette lid chassis 7, which is advantageous in terms of cost.
[0019]
Since the case 11a of the speaker 11 is grounded using the spring piece 7c, the speaker can be attached and grounded at the same time, and the number of assembly steps can be reduced.
[0020]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications are possible.
For example, the guide wall 9 is provided in the cassette lid 4 as a locking portion of the speaker 11, but a recess in which the speaker 11 can be accommodated may be formed in the cassette lid 4.
[0021]
【The invention's effect】
As described above, according to the present invention, in assembling the cassette lid to the cassette lid chassis, it is only necessary to engage the speaker with the locking portion of the cassette lid and fix the cassette lid to the cassette lid chassis. As a result, the number of assembly steps can be reduced, and the cost can be greatly reduced.
[0022]
When the cassette lid chassis is punched to form the spring piece, the spring piece and the cassette lid chassis are formed at the same time, which is advantageous in terms of cost.
[0023]
When the spring piece is brought into contact with the magnet of the speaker and grounded, the speaker is attached and grounded at the same time, and the number of assembly steps can be reduced.
[0024]
If the locking portion is formed by a guide wall that protrudes from the cassette lid and abuts on the periphery of the speaker, the guide wall is formed integrally with the cassette lid, which is advantageous in terms of cost.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment according to the present invention.
FIG. 2 is a perspective view of the assembled state of the cassette lid of FIG. 1 as viewed from the back side.
FIG. 3 is a perspective view of the cassette lid of FIG. 1 as viewed from the back side.
FIG. 4 is a diagram showing a conventional example corresponding to FIG. 1;
FIG. 5 is a perspective view showing a video camera.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Video camera 2 Camera part 3 VTR part 4 Cassette cover 5 Expansion part 6 Speaker hole 7 Cassette cover chassis 7a Click 7b Hole 7c Spring piece 8 Mechanical chassis 8a Guide groove 9 Guide wall 10 Boss part 11 Speaker 11a Magnet

Claims (4)

In a video camera in which a speaker is disposed between a cassette lid and a cassette lid chassis, a locking portion for restricting the movement of the speaker in the cassette lid surface direction is provided on the cassette lid, and the speaker is attached to the cassette lid. A speaker mounting structure for a video camera, wherein a pressing portion for pressing is provided on the cassette lid chassis. 2. The speaker mounting structure for a video camera according to claim 1, wherein the pressing portion is a spring piece formed by punching a cassette lid chassis. 3. The speaker mounting structure for a video camera according to claim 2, wherein the spring piece contacts the case of the speaker and is grounded. 4. The speaker mounting structure for a video camera according to claim 1, wherein the locking portion is a guide wall that protrudes from the cassette lid and abuts on a peripheral edge of the speaker.

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