KR19990075481A - Pole base feeder for tape recorders - Google Patents

Abstract

The main slide and pole base assembly for interlocking a pair of pole base assemblies for drawing magnetic tapes from a tape cassette mounted in a cassette holder of a tape recorder with a main slide linearly reciprocating on the main base by driving a loading motor. As a relay part interposed therebetween, a pair of loading gears driven in engagement with a rack formed on the main slide, and an arm and a pole base assembly protruding to one side of the loading gears are connected to each other to allow joint movement. Disclosed is a pole base conveying apparatus of a tape recorder including a link having an elastic portion having an elastic force with a central portion curved in an arc shape and having a slit groove formed at the center of the curved portion. This configuration can eliminate the spring interposed for imparting elasticity in the conventional structure to increase the assembly and at the same time reduce the manufacturing cost.

Description

Pole base feeder for tape recorders

The present invention relates to a pole base conveying apparatus for magnetic tape withdrawal of a tape recorder, and more particularly, to a link connecting a pole base assembly with a loading gear installed to interlock with a main slide.

A tape recorder which performs recording / reproducing operation of information on magnetic tape by scanning of a magnetic head, such as a camera-integrated tape recorder or VTR, also called a camcorder, is illustrated in FIG. As described above, a pair of pole base assemblies 131 and 132 are provided for withdrawing magnetic tape from a tape cassette (not shown) mounted on a deck cassette holder (not shown).

The pole base assemblies 131 and 132 slide along the guide groove rails 101 and 102 formed on the main base 100 of the deck by a pole base feeder including a loading motor 110. The magnetic tape is extracted from the magnetic tape (not shown) and loaded in a state in which the magnetic tape is brought into contact with the outer circumferential surface of the rotating head drum 120 by about half a turn.

1 to 4, the pole base feeder includes a worm 110a (see FIG. 3) provided at an output shaft of the loading motor 110, a worm gear 110b and a master sequentially connected to the worm 110a. The main slide 140 is installed so that the gear 110c and the first rack 141 formed on the body mesh with the connecting gear 110d installed coaxially with the master gear 110c to linearly reciprocate on the main base 100. And a pair of loading gears 150 and 160 which are installed to be interlocked with the main slide 140 and connected to the pair of pole base assemblies 131 and 132, respectively. In FIG. 3, reference numeral 111 denotes a slide rack installed to reciprocate linearly by engaging a connecting gear 110e coaxially installed with the master gear 110c to drive a cassette holder (not shown).

The loading gears 150 and 160 have arms 151 and 161 protruding to one side as shown in FIGS. 2 and 4, and hinges h at the ends of the arms 151 and 161, respectively. Links 170 and 180 installed to allow joint movement by coupling are connected. In addition, a small pinion 190 is coaxially installed on the one side (left side of the drawing) loading gear 150, the pinion 190 is a second rack 142 formed on the body of the main slide 140 It is installed to rotate in engagement with.

Meanwhile, the pole base assembly 110 and 120 has protrusion pins 131a and 132a installed to stand upright, and the protrusion pins 131a and 132a are formed at one end of the link 170 and 180. The holes 171 and 181 are inserted into and coupled to each other. In FIG. 4, reference numerals s and s ′ are springs installed to elastically support the pole base assemblies 131, 132 and the links 170, 180.

In the conventional pole base feeder having the above configuration, the main slide 140 is linearly moved in the left (or right) direction of the drawing by driving the loading motor 110. At this time, the pinion 190 engaged with the second rack 142 is rotated to drive the loading gears 150 and 160 to rotate.

As the loading gears 150 and 160 are driven to rotate, the arms 151 and 161 are rotated to face the left and right sides of the drawing, and thus the links 170 and 180 are hinged. The pole base assembly (131, 132) is moved along the guide groove rail (101, 102) formed in the main base (100) by the joint movement around the center. This transfer operation is continued until the pole base assemblies 131 and 132 are blocked by a stopper (not shown) provided at the ends of the guide groove rails 101 and 102. The magnetic tape travels by contacting the outer circumferential surface of the head drum about half a turn.

The pole base conveying apparatus of the related art as described above is used as a connecting member for linking the pole base assembly with the main slide by connecting a plurality of parts such as a load gear, an arm, a link, and a spring, thereby lowering the assemblability and manufacturing cost. There is an increasing problem.

The present invention has been made to improve the conventional problems as described above, by reducing the connection parts interposed to interlock the pole base assembly with the main slide to simplify the structure to increase the assembly and at the same time reduce the manufacturing cost It is an object of the present invention to provide a pole base feeder of a tape recorder.

1 is a schematic perspective view showing the deck mechanism of a tape recorder,

FIG. 2 is a schematic plan view showing a bottom portion of the deck mechanism shown in FIG. 1;

Figure 3 is a schematic plan view showing the main portion of the conventional pole base feeder in Figures 1 and 2,

4 is a schematic plan view showing an extract of the loading gear assembly in FIGS. 2 and 3;

5 is a schematic plan view showing a loading gear assembly constituting the pole base conveying apparatus of the tape recorder according to the present invention;

FIG. 6 is a schematic side view showing an extract of the link of FIG. 5; FIG.

FIG. 7 is a schematic perspective view of an excerpt of the link of FIG. 5; FIG.

<Description of the symbols for the main parts of the drawings>

100, 100 '... main base

101, 102, 101 ', 102' ... Guide groove rail

140, 240 ... Main slide

150, 160, 250, 260 ... loading gear

151, 161, 251, 261 ... arm

170, 180, 270, 280 ... link

131, 132, 231, 232 ... pole base assembly

271.Elastic part

272 Slit Grooves

In order to achieve the above object, a pole base conveying apparatus of a tape recorder according to the present invention is connected to a main slide slidably installed on a main base of a deck by driving a loading motor, and a rack provided on a body of the main slide. A pair of loading gears installed on the main base, a pair of pole base assemblies for extracting magnetic tapes from the tape cassettes mounted on the cassette holders of the deck and contacting the head drums, and the loading gears and pole base assemblies respectively. In a pole base conveying apparatus of a tape recorder including a pair of links for connecting, the pair of loading gears have gear portions engaged with each other, and arm portions protruding to one side from the gear portions, and each of the links has both ends thereof. It is connected to the arm part and pole base assembly, Characterized in that the elastic portion having an elastic force to the body central portion is bent formed.

In the pole base conveying apparatus of the tape recorder according to the present invention, it is particularly preferable that the link is formed in an elastic portion having an elastic force by bending the center portion of the body in an arc shape and a slit groove formed in the center portion of the elastic portion.

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

5 to 7, the pole base conveying apparatus of the tape recorder according to the present invention is connected to a gear group (not shown) that is rotationally driven by a loading motor (not shown), and thus is driven by the driving of the loading motor. A main slide 240 installed to slide on a main base (flat portion of the drawing; 100 '), and a pair of loading gears 250 and 260 installed to be rotatable in association with the main slide 240. And a cassette holder (not shown) of the deck while slidingly moving along the guide groove rails 101 'and 102' formed on the main base 100 'so as to be interlocked with the loading gears 250 and 260. A pair of pole base assemblies 231 and 232 for withdrawing magnetic tape from a tape cassette (not shown) mounted in the FIG.

The loading gears 250 and 260 have arms 251 and 261 protruding to one side as shown, and the small pinion 290 is coaxial to the one side (left side of the drawing) loading gear 250. The pinion 290 is installed to rotate in engagement with a second rack 242 formed in the body of the main slide 240. The ends of the arms 251 and 261 are connected to one ends of the links 270 and 280 installed to allow joint movement by the hinge h, respectively, and the links 270 and 280. The other end of the protruding pins 231a and 232a installed to stand upright on the pole base assembly 231 and 232 is coupled to allow joint movement.

In the pole base transfer apparatus having the above configuration, the links 270 and 280 are components that characterize the present invention, and an elastic portion 271 having an elastic force is formed by bending a central portion of the body, and the elastic portion 271 is preferably curved in an arc shape so as to be absorbed with an appropriate elastic force with respect to external force, and a slit groove 272 is preferably formed at the center thereof.

According to the pole base transfer apparatus according to the present invention having the above configuration, the main slide 240 is linearly moved in the left direction (or right direction) of the drawing by the driving of a loading motor (not shown). At this time, the pinion 290 meshed with the second rack 242 is rotated to drive the loading gears 250 and 260.

As the loading gears 150 and 160 are driven to rotate, the arms 251 and 261 are rotated to face the left and right sides of the drawing, and thus the links 270 and 280 are hinged. The pole base assembly (231, 232) is moved along the guide groove rails (101 ', 102') formed in the main base (100 ') by the joint movement around. This conveying operation is continued until the pole base assemblies 231 and 232 are blocked by stoppers (not shown) provided at the ends of the guide groove rails 101 'and 102', and the pole base When the assemblies 231 and 232 are in contact with the stopper, the elastic portion 271 of the links 270 and 280 absorbs the contact shock, thereby drawing the magnetic tape (not shown) from the outer peripheral surface of the head drum (not shown). Can be contacted gently.

As described above, the pole base transfer apparatus according to the present invention includes a connection member interposed to relay an organic operation between a main slide driven linearly and reciprocally by a loading motor and a pole base assembly which draws magnetic tapes in association with the pole slide. By minimizing the structure and simplifying the structure, productivity can be increased by reducing assembly labor and manufacturing cost.

Claims (3)

A main slide slidably installed on the main base of the deck by driving the loading motor, a pair of loading gears installed on the main base so as to be linked with the rack provided on the body of the main slide, and mounted on the cassette holder of the deck. A pole base conveying apparatus of a tape recorder comprising a pair of pole base assemblies for extracting a magnetic tape from a tape cassette and contacting the head drum, and a pair of links connecting the loading gear and the pole base assembly, respectively. The pair of loading gears have gears engaged with each other and an arm portion protruding to one side from the gear portion, and the links are coupled to each other to allow joint movement by connecting to the arm portion and the pole base assembly. The pole base feeder of the tape recorder, characterized in that the elastic portion having an elastic force is bent. The method of claim 1, The link is a pole base conveying apparatus of the tape recorder, characterized in that the elastic portion having an elastic force is formed in the center of the body is curved in an arc. The method according to claim 1 or 2, The elastic base pole pole conveying apparatus of the tape recorder, characterized in that the slit groove is formed in the center.