KR19990003034U - Band Break Assembly Structure of Tape Recorder - Google Patents

Abstract

The present invention discloses a band brake assembly structure of a tape recorder.

Conventional band brake assembly structure has a problem that the assembly process of the coupling hole formed in the through hole of the band and the first and second holders is very cumbersome and difficult, and the assembly of the product is degraded.

According to the present invention, two through holes are formed to be separated from each other at both ends of the band, respectively, and two coupling protrusions are formed to be coupled to each other by fitting the through holes of the band to one side of the first and second holders, respectively. The guide pin portion is extended so that the through hole is guided and inserted in front of the head portion which is formed in a substantially conical shape so as not to be inserted into the through hole.

Therefore, since the band of the band brake is easily and simply assembled by the simple structure and structure, the assembly process is improved and the assemblability of the product is remarkably improved.

Description

Band Break Assembly Structure of Tape Recorder

The present invention relates to a tape recorder, and more particularly, to a band brake assembly structure of a tape recorder for adjusting the tension of a tape.

In general, a tape recorder such as a video cassette recorder (VCR) or a camcorder (camcorder) is a video and audio signal on a tape of a cassette running along a certain traveling path of the traveling system by the rotation of the head drum. Record it or play it.

As shown in Fig. 1, the tape recorder has a head drum Hd provided on one side of a deck De and unloaded decks on both sides of the head drum Hd. A pole base assembly (Pb) is positioned respectively for loading or unloading the tape Ta of a cassette Ca along a loading hole.

In addition, a supply and take-up reel table (Su-T) (Tu-T) is installed under the head drum (Hd), respectively, and a supply and take-up reel table (Su-T) The cassette Ca is seated in the Tu-T, and the tape Ta is selectively wound in accordance with the mode conversion state.

Then, on one side of the supply reel table Su-T, a band brake Ba for adjusting the tension of the tape Ta in the recording or playback mode is interlocked with the tension lever Tl. Are assembled.

In the band brake assembly structure of the conventional tape recorder, as shown in FIG. 2, the band brake 10 imparts a brake force to the supply reel table Su according to the tension variation of the tape Ta.

The band brake 10 has a band 11 wound around the outer circumferential surface of the supply reel table Su, and two through holes 12a and 12b are formed to be separated from each other at both ends of the band 11.

In addition, a pair of first and second holders 13 and 14 are assembled at both ends of the band brake 10, respectively, and a band 11 is provided at one side of the first and second holders 13 and 14. The through holes 12a and 12b of the two coupling protrusions 15a and 15b are fitted to correspond to each other and are formed to protrude.

At this time, the engaging projections 15a and 15b of the first and second holders 13 and 14 are fitted to pass through the through holes 12a and 12b of the band 11, and the engaging projections 15a and 15b are connected thereto. The tip is formed into a substantially conical shape so as not to fall out after being fitted into the through holes 12a and 12b.

On the other hand, the tension lever 16 is installed so as to rotate freely around the fixed shaft 17 of the deck (De), the tension pole (tension pole) to run in contact with the tape (Ta) on one side of the upper surface of the tension lever (16) : 18) is mounted.

Then, the first holder 13 of the band brake 10 is assembled at the center of the tension lever 16, and the second holder 14 is mounted on the upper surface of the deck De by an adjust cam 19. Are assembled.

Accordingly, in the process of driving while the tape Ta is in contact with the tension pole 18 of the tension lever 16, the band 11 is wound around the outer circumferential surface of the supply reel table Su in accordance with the tension variation of the tape Ta. Losing or releasing gives the brake force. The tension of the tape Ta is adjusted by the braking force of the band 11.

However, the band brake assembly structure of the conventional tape recorder as described above has the engaging projections 15a and 15b formed in the through holes 12a and 12b of the band 10 and the first and second holders 13 and 14, respectively. ), There was a problem that the assembling process becomes very cumbersome and difficult.

In other words, in order to assemble the through holes 12a and 12b of the band 10 and the engaging projections 15a and 15b of the first and second holders 13 and 14, the tip ends of the engaging projections 15a and 15b are formed. The coupling protrusions 15a and 15b are forced to pass through the through holes 12a and 12b in a state where the through holes 12a and 12b correspond to each other.

Therefore, it is cumbersome to accurately match the leading ends of the engaging projections 15a and 15b to the centers of the through holes 12a and 12b. In addition, when the tip ends of the engaging projections 15a and 15b are located away from the centers of the through holes 12a and 12b, the joining thereof becomes difficult, and thus there is a problem that the assembly of the product is remarkably deteriorated.

The present invention has been devised to solve the above-mentioned conventional problems, and an object of the present invention is to easily and easily improve the assembly of the tape recorder by a simple configuration and structure, thereby improving the assembly of the product. It is to provide a brake assembly structure.

1 is a plan view schematically showing a traveling system of a typical tape recorder

Figure 2 is a plan view showing a band brake assembly structure of a conventional tape recorder

3 is a plan view showing a band brake assembly structure according to the present invention

Figure 4 is a cross-sectional view partially showing the band brake assembly structure according to the present invention

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

20; Bend brake 21; band

22a, 22b; Through hole

23,24; First and second holders 25a, 25b; Engaging protrusion

28; Guide pin portion 30; Tension lever

Su-T; Supply reel table

A feature of the present invention for achieving the above object is a band brake of a tape recorder in which a band wound around the outer circumferential surface of the supply reel table is assembled by the first and second holders so that the tension of the tape is interlocked with the tension lever. In each of the two ends of the band are formed so that the two through holes are separated from each other, the two through-holes of the through holes of the band to be fitted to each other on one side of the first and second holders are formed, respectively, engaging projection Is a band brake assembly structure of a tape recorder in which a guide pin portion is formed to be guided and inserted in front of a head portion which is formed in a substantially conical shape so as not to be inserted into the through hole.

Hereinafter, one preferred embodiment of a band brake assembly structure of 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 band brake assembly structure of the tape recorder according to the present invention, the basic configuration of the traveling system of the tape recorder described in Figure 1 will be described with the same reference numerals.

First, referring to FIG. 1, the head drum Hd is installed on one side of the upper surface of the deck De, and the supply and take-up reel table Su-T (Tu-T) is provided below the head drum Hd. Are respectively installed, and a cassette (Ca) is seated on the supply and take-up reel table (Su-T) (Tu-T), and the tape (Ta) is selectively wound according to the mode conversion state.

As shown in FIG. 3, the band brake 20 adjusts the tension by applying a brake force to the supply reel table Su according to the tension variation of the tape Ta, and the band brake 20 is a supply reel table ( It has the band 21 wound around the outer peripheral surface of Su). At both ends of the band 21, two through holes 22a and 22b are formed to be separated from each other.

In addition, a pair of first and second holders 23 and 24 made of a synthetic resin molded body at both ends of the band brake 20 are assembled, respectively. On one side of the first and second holders 23 and 24, two coupling protrusions 25a and 25b are formed to protrude from each other so that the through holes 22a and 22b of the band 21 are fitted to each other.

Here, the engaging projections 25a and 25b of the first and second holders 23 and 24 are fitted so as to pass through the through holes 22a and 22b of the band 21, and the engaging projections 25a and 25b are The tip is formed into a substantially conical shape so as not to fall out after being fitted into the through holes 22a and 22b.

That is, the coupling protrusions 25a and 25b have coupling pin portions 26 extending from one side of the first and second holders 23 and 24 so as to be fitted into and coupled to the through holes 22a and 22b. It has the head part 27 formed in the substantially conical shape at the end of 26.

In addition, the head portion 27 of the engaging projections 25a and 25b has a maximum diameter somewhat larger than the diameter of the through holes 22a and 22b, and hence the through holes 22a and 22b from the engaging pin portion 26. ) Is prevented from falling out.

The coupling protrusions 25a and 25b are formed with guide pins 28 extending so that the through holes 22a and 22b are guided and fitted in front of the head portion 27. Here, it is preferable that the guide pin portion 28 of the engaging projections 25a and 25b is formed to be somewhat smaller in diameter than the through holes 22a and 22b.

On the other hand, the tension lever 30 is installed so as to rotate freely around the fixed shaft 31 of the deck (De), the tension pole 32 so that the tape Ta is in contact with one side of the upper surface of the tension lever 30 to run. Is fitted.

Then, the first holder 23 of the band brake 20 is assembled in the center of the tension lever 30, and the second holder 24 is assembled to the upper surface of the deck De by the adjustment cam 33. In accordance with the adjustment of the adjustment cam 33, the brake force of the band 21 applied to the supply reel table Su is adjusted to finely adjust the tension of the tape Ta.

One end of the spring 34 is held at one end of the tension lever 24, and the other end of the spring 34 is held at one side of the upper surface of the deck De to be fixed to the tension lever 24. It gives elasticity.

Therefore, the present invention, as shown in Figure 4, when assembling the engaging projections (25a, 25b) of the first and second holders 23, 24 in the through holes (22a, 22b) of the band 21 When the guide pins 28 of the engaging projections 25a and 25b are inserted into the through holes 22a and 22b of the band 21, the centers of the through holes 22a and 22b and the engaging projections 25a and 25b of the coupling projections 25a and 25b are different. The center coincides exactly. In other words, the center of these pins is exactly coincided by inserting the guide pins 28 of the engaging projections 25a and 25b into the through holes 22a and 22b of the band 21.

Then, the coupling protrusions 25a and 25b are formed in the through holes 22a and 22b of the band 21 in a state where the centers of the through holes 22a and 22b of the band 21 coincide with the centers of the coupling protrusions 25a and 25b. When passing through the head portion 27, the through-holes 22a and 22b are positioned in the engaging pin portion 26 of the engaging projections 25a and 25b so as not to be pulled out by the head portion 27.

At this time, when the through holes 22a and 22b of the band 21 pass through the head portion 27 of the engaging projections 25a and 25b, the diameters of the through holes 22a and 22b are caused by the elasticity of the band 21. As it expands, it naturally passes through the head portion 27.

Thus, since the through holes 22a and 22b of the band 21 are easily and simply assembled by the guide pins 28 of the engaging projections 25a and 25b, the assemblability of the product is remarkably improved.

On the other hand, according to the present invention, the tape Ta is driven in contact with the tension pole 32 of the tension lever 30 during recording or playback of the tape recorder, and the tension is changed as the tape Ta is in contact with the tension pole 32. When the vehicle is driven, the tension lever 30 is rotated about the fixed shaft 31 to receive the elastic force of the spring 34.

In other words, the spring 34 is elastically deformed by the tension lever 30 which is rotated as the tension of the tape Ta is changed to impart an elastic force. Thus, the band 21 of the band brake 20 is wound or released on the outer circumferential surface of the supply reel table Su-T to impart brake force. The tension of the tape Ta is adjusted by the braking force of the band 11.

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 band brake assembly structure of the tape recorder according to the present invention, the band brake band is easily and simply assembled to the first and second holders by a simple configuration and structure, thereby improving the assembly process. The assemblability of remarkably improves.

Claims (1)

In the band brake of a tape recorder, in which a band wound on an outer circumferential surface of a supply reel table is assembled by the first and second holders so that the tension of the tape is interlocked with the tension lever, Two through holes 22a and 22b are formed to be separated from each other at both ends of the band 21, respectively. Two coupling protrusions 25a and 25b are formed at one side of the first and second holders 23 and 24, respectively, in which through-holes 22a and 22b of the band 21 are fitted to each other. , The coupling protrusions 25a and 25b are guide pins so that the through holes 22a and 22b are guided and inserted in front of the head portion 27 formed in a substantially conical shape so as not to be inserted into the through holes 22a and 22b. 28) band brake assembly structure of the tape recorder, which is formed to extend.