KR19990020312U - Control Structure of Audio / Control Head Assembly for Tape Recorder - Google Patents

Abstract

The present invention discloses an adjustment structure of an audio / control head assembly for a tape recorder. In the present invention, the extension piece is formed downward on one side of the bracket, and the contact protrusion protrudes in a substantially semi-circular shape so as to be in point contact with the outer circumferential surface of the adjust cam at an approximately center of the extension piece. Further, a contact protrusion protrudes along the circumferential direction at approximately the center of the outer circumferential surface of the adjust cam so as to be in point contact with the extension piece. Thus, the X-position of the audio / control head is precisely adjusted in the state where the extension piece of the bracket and the adjust cam are in point contact, so that the adjustability is remarkably improved.

Description

Control Structure of Audio / Control Head Assembly for Tape Recorder

The present invention relates to an audio / control head assembly for a tape recorder, and more particularly, to an adjustment structure of an audio / control head assembly for a tape recorder, in which an adjustment of the audio / control head assembly is precisely performed. It is about.

In general, a tape recorder such as a video cassette recorder (VCR) or a camcorder (recorder) or the like records or reproduces video and audio signals on a tape of a cassette traveling along a certain traveling path of a traveling system.

On the other hand, in the traveling system of the tape recorder, a head drum is installed on the deck, and an audio / control head assembly is installed on one side of the head drum. The audio / control head assembly performs the function of recording or playing back the audio signal recorded on the tape, or selectively cancels the audio signal, and uses the concept of pulse on the tape for servo of the capstan motor. A regular control signal is input or output, whereby the video and audio signals are matched with each other and recorded or reproduced.

As shown in FIG. 1, the audio / control head assembly 10 for the tape recorder is provided with an audio / control head assembly 10 on one side of the upper surface of the deck D, and the audio / control head assembly 10 has a bracket. 11) is installed to be able to rotate about the post (12). A support plate 13 is installed on the upper part of the bracket 11 so as to have a predetermined height by three adjusting screws 14, and a compression coil spring 15 is attached to one of the three adjusting screws 14. The audio / control head 16 is assembled on the upper surface of the support plate 13.

The audio / control head assembly 10 adjusts the height, azimuth, and tilt so that the tape (not shown) travels in precise contact with the audio / control head 16. And the X-position, which is the distance defined between the video head of the head drum and the audio / control head 16, to match the video and control signals.

One device for adjusting the X-position of the audio / control head assembly 10 is equipped with an adjust cam 17 on the top surface of the deck D so as to be adjacent to the bracket 11 and the bracket 11 ) Is biased toward the adjuster cam 17 by the elastic force of the torsion spring 18 mounted to the post 12 so that the X-position is adjusted.

The control structure of the conventional audio / control head assembly for a tape recorder is shown in FIGS. 2A and 2B, and the audio / control head assembly 10 described with reference to FIG. 1 has an extension piece 11a on one side of the bracket 11. ) Is extended by bending processing downward. The above-mentioned adjust cam 17 is mounted on the upper surface of the deck D so as to be adjacent to the extension piece 11a of the bracket 11, and the bracket 11 of the torsion spring 18 mounted to the post 12 is mounted. It is biased toward the adjust cam 17 by the elastic force.

Meanwhile, in order to adjust the X-position of the audio / control head 16, when the adjust cam 17 is rotated by a tool, for example, a driver, the adjust cam 17 is eccentrically rotated and the bracket 11 is rotated. The bracket 11 is rotated by the elastic force of the torsion spring 18 about the post 12 by pushing the extension piece 11a of the rod or by the distance between the adjust cam 17 and the extension piece 11a. Thus, the X-position of the audio / control head 16 is adjusted.

However, as described above, the audio / control head assembly adjusting structure for the tape recorder is formed because the extension piece 11a of the bracket 11 is formed by bending by pressing, and therefore, due to processing error or the like generated during bending. There was a problem in that an error worsened or a burr was easily generated in the squareness of the extension piece 11a, resulting in an adjustment error of the X-position.

For example, when the extension piece 11a of the bracket 11 is not bent at right angles and is bent toward the inside and the outside, a point at which the extension piece 11a comes in contact with the outer circumferential surface of the adjust cam 17 is provided. Since the adjustment error is generated while being formed differently from the design value, the adjustment work of the X-position becomes cumbersome and difficult, and the controllability is lowered. In addition, when burrs are generated on one side of the extension piece 11a, the burrs of the extension pieces 11a come into contact with the outer circumferential surface of the adjust cam 17, so that an adjustment error is generated and the adjustability is lowered.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an audio / tape recorder for precisely adjusting the X-position of the audio / control head by a simple configuration and structure. It is to provide a control structure of the control head assembly.

1 is a perspective view of an audio / control head assembly for a typical tape recorder,

2A and 2B are cross-sectional views illustrating a control structure of a conventional audio / control head assembly;

3 is a cross-sectional view showing an adjustment structure of an audio / control head assembly according to the present invention;

Figure 4 is a cross-sectional view showing an embodiment of the adjustment structure of the audio / control head assembly according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: Audio / Control Head Assembly 11: Bracket

11a: extension piece (of bracket) 11b: contact protrusion (of extension)

12: Post 16: Audio / Control Head

17: adjust cam 17: contact turning (of adjust cam)

Features of the present invention for achieving the above object, the bracket is installed rotatably around the post of the deck, and the support plate is installed to have a predetermined height by three adjustment screws and compression coil spring on the top of the bracket and 1. An audio / control head assembly for a tape recorder, comprising: an audio / control head assembled on an upper surface of a support plate; and an adjust cam mounted on an upper surface of a deck for rotating an bracket to adjust an X-position. An extension piece is formed downwardly on one side thereof, and an adjustment structure of an audio / control head assembly for a tape recorder is formed in which the contact protrusion protrudes in a substantially semi-circular shape so as to be in point contact with the outer circumferential surface of the adjust cam at an approximately center of the extension piece.

Another feature of the present invention is a bracket which is rotatably installed around a post of a deck, a support plate installed to have a predetermined height by three adjusting screws and a compression coil spring on the upper part of the bracket, and an upper surface of the support plate. An audio / control head assembly for a tape recorder having an audio / control head to be assembled and an adjust cam mounted on an upper surface of the deck so that the bracket can be rotated to adjust the X-position. And an adjustment structure of an audio / control head assembly for a tape recorder, which is formed to extend toward the center, and has a contact protrusion protruding along the circumferential direction at approximately the center of the outer circumferential surface of the adjust cam so as to point contact with the extension piece.

Hereinafter, one preferred embodiment of an adjustment structure of an audio / control head assembly for a tape recorder according to the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 are views for explaining the adjustment structure of the audio / control head assembly for a tape recorder according to the present invention, the basic configuration of the audio / control head assembly described in Figure 1 will be described with the same reference numerals.

First, referring to FIGS. 1 and 3, the audio / control head assembly 10 is installed on one side of the upper surface of the deck D constituting the traveling system of the tape recorder. The audio / control head assembly 10 is installed such that the bracket 11 is rotatable about the post 12, and the post 12 is mounted to the deck D by riveting.

In addition, the support plate 13 is positioned and installed at the top of the bracket 11 to have a predetermined height by three adjustment screws 14, and one of the three adjustment screws 14 is provided with a compression coil spring 15 The audio / control head 16 is assembled on the upper surface of the support plate 13. The compression coil spring 15 imparts a predetermined elastic force to the support bracket 13, and the three adjustment screws 14 and the compression coil spring 15 are arranged so that the tape (not shown) is precisely aligned with the audio / control head 16. It is used to adjust the height, azimuth and tilt so as to travel in contact with and in close contact.

On the other hand, the audio / control head assembly 10 is a structure for adjusting the X-position, which is a distance defined between the video head of the head drum and the audio / control head 16, not shown so that the video and the control signals coincide with each other. An extension piece 11a is formed on one side of the bracket 11 by bending downward. The adjust cam 17 is mounted on the upper surface of the deck D so as to be adjacent to the extension piece 11a of the bracket 11, and the bracket 11 is adapted to the elastic force of the torsion spring 18 mounted to the post 12. This is biased toward the adjust cam 17. At this time, one outer circumferential surface of the adjust cam 17 is mounted to be in contact with the extension piece 11a and is mounted to allow eccentric rotation.

In addition, the bracket 11 is formed so that the contact protrusion 11b protrudes by embossing by press to enable point contact with the outer circumferential surface of the adjust cam 17 at approximately the center of the extension piece 11a. do. Here, it is preferable that the contact protrusion 11b protrudes in substantially semicircle shape.

As shown in FIG. 4, the contact protrusion 17a protrudes along the circumferential direction in the substantially center of the outer peripheral surface of said adjust cam 17. As shown in FIG. The contact protrusion 17a of the adjust cam 17 protrudes in a substantially semi-circular shape and is in point contact with the extension piece 11a of the bracket 11, and the contact protrusion 17a of the adjust cam 17 is used for molding. It is preferable to produce by.

The adjustment structure of the audio / control head assembly for a tape recorder according to the present invention as described above, as shown in FIG. 3, adjusts the adjust cam 17 to adjust the X-position of the audio / control head 16. For example, when it rotates with a driver etc., in the state which the contact protrusion 11b formed in the extension piece 11a of the bracket 11 was in point contact with the outer peripheral surface of the adjust cam 17, the adjust cam 17 ) Is rotated about the post of the bracket 11 by being eccentrically rotated.

In detail, the contact protrusion 11b in point contact with the outer circumferential surface of the adjust cam 17 is pushed in one direction by the eccentric rotation of the adjust cam 17 or the contact protrusion with the adjust cam 17. The bracket 11 is rotated by the elastic force of the torsion spring 18 about the post 12 by the interval between the 11b, so that the X-position of the audio / control head 16 is adjusted by the adjust cam ( It is finely adjusted according to the amount of rotation of 17). In this way, since the contact projection 11b of the bracket 11 is in point contact with the outer circumferential surface of the adjust cam 17, the X-position is precisely adjusted without being affected by the adjustment error, that is, the squareness of the extension piece 11a. And remarkability is remarkably improved.

And as shown in FIG. 4, even when the contact protrusion 17a protrudes on the outer peripheral surface of the adjust cam 17, the extension piece 11a of the bracket 11 and the adjust cam 17 are similarly demonstrated. Contact protrusions 17a are in point contact, and the controllability is remarkably improved.

On the other hand, the above-described embodiment is only to describe one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed as appropriate within the scope of the same idea, for example The shape of each component specifically shown in the embodiment of the design can be modified.

As described above, according to the adjustment structure of the audio / control head assembly for a tape recorder according to the present invention, the X-position of the audio / control head is precisely adjusted while the extension piece of the bracket and the adjust cam are in point contact. Adjustability is remarkably improved.

Claims (2)

A bracket rotatably installed around the post of the deck, a support plate installed on the bracket to have a predetermined height by three adjustment screws and a compression coil spring, and an audio / control assembled to an upper surface of the support plate. An audio / control head assembly for a tape recorder having a head and an adjust cam mounted on an upper surface of the deck to rotate the bracket to adjust an X-position. An extension piece 11a is formed to extend downward on one side of the bracket 11, and the contact protrusion 11b is in point contact with the outer circumferential surface of the adjust cam 17 at approximately the center of the extension piece 11a. And a projection structure formed in a substantially semi-circular shape. A bracket rotatably installed around the post of the deck, a support plate installed on the bracket to have a predetermined height by three adjustment screws and a compression coil spring, and an audio / control assembled to an upper surface of the support plate. An audio / control head assembly for a tape recorder having a head and an adjust cam mounted on an upper surface of the deck to rotate the bracket to adjust an X-position. An extension piece 11a is formed to extend downward on one side of the bracket 11, and is contacted along the circumferential direction of the center of the outer circumferential surface of the adjust cam 17 so as to be in point contact with the extension piece 11a. Adjusting structure of an audio / control head assembly for a tape recorder, wherein the projection 17a is formed to protrude.