KR19990013587U - Head drum assembly installation structure of tape recorder - Google Patents

Abstract

The present invention discloses a head drum assembly mounting structure of a tape recorder.

The head drum assembly mounting structure of the conventional tape recorder has to form a drum base plate on which the bottom of the head drum assembly is supported by forming the edge of the ablation hole, so that it is very difficult to accurately maintain the accuracy of processing. Not only is this deterioration, there is a problem that the configuration and structure of the press die required for the processing of the drum base plate is complicated, which acts as an increase factor of the production cost.

The present invention is formed in an i-shape by the first and second drum base plate extending to the inside of the left and right of the center with respect to the center of the cutting hole on one side of the upper surface of the deck, the first and second drum Each of the base plates is formed to be recessed and protruded to have a vertical plane perpendicular to the horizontal plane of the deck and an inclined plane formed at a predetermined angle on the same horizontal plane at the end of the vertical plane, and the head is inclined to the inclined planes of the first and second drum base plates. The through hole is formed so that the drum assembly can be assembled by tightening the screw. Therefore, the cutting hole of the deck is formed by the first and the second drum base plate in a simple structure and structure of approximately I-shape so that the head drum assembly is installed, so that the precision of processing is maintained accurately and the processability of the product is improved. Rather, the production cost of the product is reduced.

Description

Head drum assembly installation structure of tape recorder

The present invention relates to a head drum assembly of a tape recorder, and more particularly to.

In general, a tape recorder such as a video cassette recorder (VCR) or a camcorder (recorder) records video and audio signals on a tape of a cassette running along a certain driving path of the odometer by rotating the head drum assembly. Or play it back.

The head drum assembly of the tape recorder has an upper drum and a lower drum mounted on the upper and lower parts of the shaft, and a drum motor is installed below the lower drum. As the upper drum rotates in accordance with the driving, recording or reproduction of the video signal is performed by the action of the video head. Then, the head drum assembly is installed on one side of the upper surface of the deck, the head drum assembly is installed inclined at a predetermined angle so that recording or reproduction of the video signal is performed by the helical scan method.

On the other hand, to install a head drum assembly on one side of the top of the deck, a drum base (drum base), which is manufactured separately by die casting, is used. Rather, it raises production costs. In order to solve this problem, the drum base plate is formed by forming one side of the upper surface of the deck by press working.

The head drum assembly mounting structure of the conventional tape recorder as shown in Figs. 1A and 1B has a cutout hole 11 formed on one side of the upper surface of the deck 10 by piercing, and the cutout hole 11 The drum base plate 12 is formed by forming the edge of the sheet by pressing. At this time, the drum base plate 12 is formed to be inclined at a predetermined angle by recessing and protruding the left and right sides relative to the center, respectively. In addition, a plurality of through holes 13 are formed in the drum base plate 12 at equal intervals. Then, in a state where the head drum assembly (H) is seated on the upper surface of the drum base plate 12, the head drum assembly (H) by fastening the screw 15 through the through hole 13 of the drum base plate (12). Will be installed.

However, the head drum assembly mounting structure of the conventional tape recorder as described above must form the drum base plate 12 on which the lower surface of the head drum assembly H is supported by forming the edge of the ablation hole 11. There was a problem that the workability of the product is lowered. That is, since the drum base plate 12 forms the entire edge of the ablation hole 11 to be contained and protrudes to the left and the right, respectively, a spring bacK is largely generated, and thus, precision of machining, for example, It becomes very difficult to accurately maintain the inclination angle of the drum base plate 12.

In order to solve this problem, since the forming process of the drum base plate 12 must be performed in stages, the work time is not only relatively increased, but the work is cumbersome. In addition, the configuration and structure of the press die required for the processing of the drum base plate 12 is complicated, there is a problem that acts as an increase factor of the production cost.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is not only to improve the processability of the product by a simple configuration and structure, but also to reduce the production cost of the product of the tape recorder To provide a head drum assembly mounting structure.

1A and 1B are an exploded perspective view and a plan view showing a head drum assembly installation structure of a conventional tape recorder;

Figure 2 is an exploded perspective view showing the head drum assembly installation structure of the tape recorder according to the present invention,

3 is a plan view partially showing a head drum assembly installation structure of a tape recorder according to the present invention;

4 is a cross-sectional view taken along the line II of FIG. 3.

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

20: Deck 21: Ablation Hole

22,23: first and second drum base plates

22a, 23a: vertical surface 22b, 23b: sloped surface

22c, 23c: through hole 24: screw

H: head drum assembly

A feature of the present invention for achieving the above object is a structure for installing a head drum assembly for recording and reproducing a video signal on one side of the deck, with an ablation hole on one side of the deck relative to its center. It is formed substantially in an i-shape by the first and second drum base plates extending inward to the left and right sides of the center, respectively, the first and second drum base plates each having a vertical plane perpendicular to the horizontal plane of the deck; The end of the vertical surface is formed to be recessed and protruded from the left to the right to have an inclined surface to form a predetermined angle from each other on the same horizontal surface, the head drum assembly is assembled on the inclined surface of the first and second drum base plate by screwing In the head drum assembly mounting structure of the tape recorder, each through hole is formed.

Hereinafter, one preferred embodiment of the head drum assembly installation structure of the tape recorder according to the present invention will be described in detail with reference to the accompanying drawings.

2 to 4 are diagrams for explaining the head drum assembly installation structure of the tape recorder according to the present invention.

First, as shown in FIG. 2, the substantially I-shaped cutting hole 21 is formed in one side of the upper surface of the deck 20 by piercing. That is, the deck 20 has the first and second drum base plates 22 and 23 on the left and right sides of the center of the ablation hole 21 to be pierced, respectively, to the inside of the ablation hole 21. It extends and forms in substantially I-shape.

3 and 4, the first drum base plate 22 is formed to be recessed by forming by press working on the upper surface of the deck 20, and the second drum base plate ( 23 is formed to protrude by forming by press working on the upper surface of the deck (20). At this time, the first and second drum base plates 22 and 23 have vertical surfaces 22a and 23a perpendicular to the deck 20, respectively, and the first and second drum base plates 22 and 23 are respectively. ) Have inclined surfaces 22b and 23b that form a predetermined angle with each other on the same horizontal surface from left to right at the ends of the vertical surfaces 22a and 22b.

On the other hand, through holes 22c and 23c are formed in the inclined surfaces 22b and 23b of the first and second drum base plates 22 and 23, respectively. Therefore, in the state where the head drum assembly H is seated on the inclined surfaces 22b and 23b of the first and second drum base plates 22 and 23, the screws 24 are passed through the through holes 22c and 23c. The head drum assembly (H) can be assembled and installed by the fastening.

In this way, in the present invention, the first and second drum base plates 22 and 23 formed on the left and right sides of the ablation hole 21 in a state where the ablation hole 21 having an approximately i-shaped shape is formed by piercing. Is formed by forming inclined at a predetermined angle, thereby improving the workability of the product. That is, since the spring back of the first and second drum base plates 22, 23 to be formed is greatly reduced compared to the conventional drum base plate 12, the first and second drum base plates 22, 23 are The inclination angles of the inclined surfaces 22b and 23b can be accurately maintained so as to match the design value, so that the accuracy of processing is improved, and the workability of the product is remarkably improved. In addition, since the structure and structure of the first and second drum base plates 22 and 23 are simply formed, the structure and structure of the press die required for processing are also simplified, and as a result, the production cost of the product is reduced.

On the other hand, the above-described embodiment is merely 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 appropriately within the scope of the same idea. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, according to the installation structure of the head drum assembly of the tape recorder according to the present invention, the cutting hole of the deck is formed by the first and the second drum base plate in a simple structure and structure of a substantially i-shaped head drum assembly. By installing the above, the precision of the machining is maintained accurately, not only the workability of the product is remarkably improved, but also the structure of the press die is simplified and the production cost of the product is reduced.

Claims (1)

A structure for installing a head drum assembly for recording and reproducing video signals on one side of a deck, An ablation hole 21 is formed on one side of the upper surface of the deck 20 by first and second drum base plates 22 and 23 extending inwardly to the left and right sides of the center, respectively. Formed into a shape, Each of the first and second drum base plates 22 and 23 has a vertical surface 22a, 23a perpendicular to the horizontal surface of the deck 20, and a left side at the end of the vertical surface 22a, 22b. Is formed to be recessed and protruded to have inclined surfaces 22b and 23b formed at a predetermined angle with each other on the same horizontal surface toward the right side, Through-holes 22c and 23c such that the head drum assembly H can be assembled to the inclined surfaces 22b and 23b of the first and second drum base plates 22 and 23 by fastening the screws 24. The head drum assembly mounting structure of the tape recorder, characterized in that each is formed.