KR19980075578A - Stopper for positioning pole base assembly of tape recorder - Google Patents

Abstract

A stopper for determining the position of a pole base assembly for drawing a magnetic tape from a tape cassette loaded into a tape recorder to a head drum is disclosed. The disclosed pole base assembly positioning stopper has a deck of guide rail end in which the pole base assembly is slid so as to be seated in a V-shaped guide groove formed in the body of the base member in which the guide pole contacting the magnetic tape is installed upright. The main base is characterized by a cone-shaped protrusion formed by embossing a portion of the main base downward.

Description

Stopper for positioning pole base assembly of tape recorder

The present invention relates to a stopper for determining a conveying position of a pole base assembly conveyed along a guide groove rail for drawing a magnetic tape from a tape cassette loaded in a tape recorder to a head drum.

In general, a tape recorder such as a VTR is used to draw a magnetic tape from a tape cassette mounted on a cassette holder, and guide rails formed on the main base to be wound about half a turn on the outer circumferential surface of the rotating head drum. It has a pair of pole base assemblies which move along. This pole base assembly is capable of withdrawing magnetic tape from a tape cassette by a drive system as shown in FIG. Referring to FIG. 1, reference numerals 110 and 120 are pole base assemblies for guiding and drawing a magnetic tape from a tape cassette, and rotate in cooperation with a main slide member 200 slidably provided on a main base 100 of a deck. It is coupled to each of the pair of loading gears 130,140. The coupling structure of the pole base assembly 110, 120 and the loading gear 130, 140 is free to rotate with respect to the arm members 131, 141 coupled to be fixed to the loading gear 130, 140. The link members 150 and 160 are coupled by hinges h and h ', respectively, and the pin members 111 and 121 provided in the pole base assemblies 110 and 120 are connected to the link members 150. It is coupled to the coupling holes 151 and 161 of the 160 to enable joint movement. Reference numerals 170 and 180 denote springs for resiliently supporting the pole base assemblies 110 and 120 and the link members 150 and 160. In addition, 10 is a head drum in which the magnetic head is installed, and a pair of guide groove rails 101 and 102 are formed in the main base 100 so as to surround the magnetic head, and the pole base assembly 110 and 120 are formed. ) Is coupled to the guide groove rails 101 and 102 so as to slide in the direction of the arrow shown by the main slide member 200 and the loading gears 130 and 140 driven by a loading motor (not shown). You are guided. Stoppers 210 and 220 provided at the main base 100 are provided at the end portions of the guide groove rails 101 and 102 so that the pole base assembly 110 and 120 may be connected to the stopper 210. Movement is impeded by 220).

FIG. 2 is a schematic perspective view showing an extract of the pole base assembly and the positioning stopper, wherein the guide pole 112 in contact with the magnetic tape is installed at the front of the body of the base member 111 installed so as to stand upright. The guide groove 111a of the type | mold is formed.

The stopper 210 is a block 211 coupled to the main base 100 by a screw s, and protrudes from the body of the block 211 to the groove end of the guide groove rail 101. It has a protruding shaft 212 located. Accordingly, the pole base assembly 110 is moved along the guide groove rail 101 when the magnetic tape is taken out, and the protruding shaft 212 is seated in the V-shaped guide groove 111a of the base member 111. This prevents movement. Thus, the pole base assembly 110, 120 is positioned so that the transfer is stopped exactly by the stopper 210, 220 at the time when the magnetic tape loading is completed.

By the way, since the conventional pole base assembly positioning stopper 210, 220 is made of a separate member and coupled to the main base by a screw, there is a problem in that the manufacturing cost and assembly labor increases due to the increase in the number of parts. In addition, the stopper may have a structure in which a protruding shaft is formed on the drum base supporting the head drum, although not shown in the drawing, such a structure also acts as a factor in increasing the number of manufacturing hours of the drum base.

The technical problem to be achieved by the present invention is to solve the problem of the pole stop assembly positioning stopper of the conventional tape recorder as described above, the present invention draws the magnetic tape from the tape cassette mounted on the tape recorder to the head drum It is an object of the present invention to provide a pole base positioning stopper for a tape recorder in which the stopper for positioning the pole base assembly is integrally formed on the main base to reduce the number of parts and the number of assembly parts.

1 is a schematic plan view showing the main part of the deck mechanism to explain the pole base assembly drive system of a tape recorder;

2 is a schematic perspective view showing a stopper for positioning a pole base assembly of a conventional tape recorder;

3 is a schematic perspective view showing a stopper for positioning a pole base assembly of a tape recorder according to the present invention; and

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

Explanation of symbols for main parts of the drawings

100..Main base 101, 102..Guide groove rail

110, 120. Pole base assembly 111. Base member

111a..V groove 112..Guide pole

210, 220..pole base assembly stopper

300. Pole base assembly stopper

In order to achieve the above object, a stopper for positioning a pole base assembly of a tape recorder according to the present invention includes a guide groove rail formed on a main base to draw a magnetic tape from a tape cassette seated on a cassette holder of a tape recorder to a head drum. The pole base assembly of the tape recorder, which is installed so as to stand up to the base member and moved along the pole base assembly having a guide pole in contact with the magnetic tape to determine the position of the completion of loading of the magnetic tape In the positioning stopper, the stopper is characterized by consisting of a protrusion formed by recessing a part of the main base around the end of the guide groove rail to a certain depth so as to limit the movement by contact with the base member. .

In the stopper for positioning the pole base assembly of the tape recorder according to the present invention, it is particularly preferable that the protrusion is formed in a cone shape by embossing so as to be seated in the guide groove formed in the base member.

Hereinafter, a pole base assembly positioning stopper of a tape recorder according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic perspective view showing a stopper for positioning a pole base assembly of a tape recorder according to the present invention, and FIG. 4 is a schematic cross-sectional view taken along the line III-III of FIG. 3. The same reference numerals as the reference numerals of the drawings shown above indicate the same members. In addition, the pole base assembly 110 illustrated is capable of withdrawing the magnetic tape from the tape cassette by a drive system as described with reference to FIG. 1, and a base installed so that the guide pole 112 contacting the magnetic tape is upright. A V-shaped guide groove 111a is formed in the front portion of the body 111.

Reference numeral 300 is a pole base assembly positioning stopper according to the present invention, the main base 100 around the end of the guide groove rail 101 to limit its movement by contact with the base member 111 ) Is characterized in that it is made of a protrusion 301 protruding downwards is recessed to a certain depth.

The protrusion 301 is seated in the V-shaped guide groove 111a formed in the base member 111, and is formed to have a recessed portion 302 in the upper portion so that the lower side of the main base protrudes into a cone shape by embossing. . Therefore, the pole base assembly 110 is moved along the guide groove rail 101 when the magnetic tape is taken out, so that the protrusion 301 is seated in the V-shaped guide groove 111 a of the base member 111. It is stopped. Thus, the pole base assembly 110, 120 is positioned so that the transfer is stopped exactly by the stopper 210, 220 at the time when the magnetic tape loading is completed.

As described above, the pole base assembly positioning stopper of the tape recorder according to the present invention can be manufactured easily and at the same time, the number of parts can be reduced, thereby reducing manufacturing cost and assembly labor.

Claims (2)

A base member moved along a guide groove rail formed in the main base to draw the magnetic tape from the tape cassette seated in the cassette holder of the tape recorder to the head drum, and a guide pole installed upright on the base member to be in contact with the magnetic tape. A stopper for positioning a pole base assembly of a tape recorder, which is capable of determining a position at the completion of loading of a magnetic tape by interfering with a pole base assembly having: Wherein the stopper pole base assembly position of the tape recorder, characterized in that the protrusion formed by recessing a part of the main base around the end of the guide groove rail to a certain depth so as to limit the movement by contact with the base member Determination stopper. The method of claim 1, The projection unit head drum assembly of the tape recorder, characterized in that formed in a cone shape by the embossing process to be seated in the guide groove formed in the base member.