KR100200596B1 - Video cassette recorder - Google Patents

Abstract

According to the invention, the main base member; A main circuit board assembled under the main base member; A magnetic recording and reproducing apparatus, comprising: a head drum signal cable member that is drawn out of a groove formed in the head drum assembly and is elastic in a rigid state, and is attached to an end of the head drum signal cable member and is formed of a plurality of conductive parts. A magnetic recording / reproducing apparatus is provided, comprising: a first connecting terminal member having a contact formed in the form of a thin stripe; and a second connecting terminal member having a plurality of contact spring members formed on the main circuit board. In the present invention has the advantage that it is possible to assemble and manufacture easily and conveniently using a connection terminal of a very simple structure.

Description

Magnetic recording and playback device {Video cassette recorder}

The present invention relates to a magnetic recording and reproducing apparatus, and more particularly, to a magnetic recording and reproducing apparatus having improved connection structure of a head drum signal cable connecting terminal.

A magnetic recording and reproducing apparatus is a device for recording and reproducing video and audio signals using a magnetic tape as a recording medium. In the case of a video tape recorder, a magnetic head installed in a high-speed rotating head drum contacts the magnetic tape and Read the audio signal.

1 shows a perspective view of a deck of a typical video tape recorder.

Referring to the drawings, a reel table 120 on which a cassette (not shown) of a magnetic tape is placed on the main base 110 of the deck 100, a capstan motor shaft 160 driving the magnetic tape (not shown), and A pinch roller assembly 150 and a drum base 130 supporting the head drum assembly are installed. The head drum assembly includes a lower drum 132 fixed on the drum base 130, an upper drum 134 rotating at a high speed on the lower drum 132, and between the upper drum 134 and the lower drum 132. And a magnetic head 136 disposed within the head drum assembly and rotating with the upper drum 134. The pole base assembly 140 transports along a cam groove formed on the main base 110 so as to maintain a magnetic tape (not shown) on the outer circumferential surface of the head drum assembly.

2 is a schematic exploded perspective view of a connection structure of a drum signal terminal according to the prior art.

Referring to the drawings, typically a drum assembly including an upper drum 134 and a lower drum 132 is installed in the main base 110 through the drum base 130, the lower drum 132 as described above The upper drum 134 rotates while being fixed. The drum signal cable 210 is drawn out to the outside through a drawing groove formed in the fixed lower drum 132. The drum signal cable 210 is soldered to the connection terminal 220 so that it can be connected to a contact of a main circuit board (not shown). The connection terminal 220 is sandwiched between the connectors 230, and the connector 230 is supported on the main base 110, so that the contact terminals 220 and the contacts of the main circuit board (not shown) may maintain contact with each other. have.

The connection structure of the drum signal cable as described above has a problem in that it is not easy to manufacture and assemble because it uses a separate connection terminal 220 and the connector 230. Since the operation of inserting the connection terminal 210 to the connector 230 and supporting it back to the main base 110 is complicated, it acts as a factor that decreases the productivity of device fabrication. In addition, when the mounting position of the connector 230 is misaligned, the connection terminal 220 of the drum signal cable 210 and the contact point of the main circuit board (not shown) may not come into contact with each other. It became a factor to inhibit.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a magnetic recording and reproducing apparatus having improved connection structure of a drum signal cable connection terminal.

Another object of the present invention is to provide a magnetic recording and reproducing apparatus having a drum signal cable connection structure that is easy to manufacture and assemble.

In order to achieve the above object, according to the present invention, the main base member; A circuit board assembled under the main base member; A magnetic recording and reproducing apparatus, comprising: a head drum signal cable member that is drawn out of a groove formed in the head drum assembly and is elastic in a rigid state, and is attached to an end of the head drum signal cable member and is formed of a plurality of conductive parts. A magnetic recording and reproducing apparatus is provided having a first connecting terminal member having a contact formed in the form of a thin stripe, and a second connecting terminal member having a plurality of contact spring members formed on the main circuit board.

According to another feature of the invention, the plurality of conductive thin stripe-shaped contacts of the first connection terminal member contact each of the plurality of contact spring members of the second connection terminal member.

According to another feature of the invention, the contact spring member of the second connection terminal member has a fixing portion fixed to the main circuit board and a contact portion spaced apart from the main circuit board.

1 is a schematic perspective view of a deck of a general magnetic recording and reproducing apparatus.

Fig. 2 is a schematic exploded perspective view showing connecting the head drum signal terminal in the prior art.

3 is a schematic exploded perspective view showing a connection structure of a head drum signal terminal according to the present invention;

Brief description of the main symbols in the drawings

110. Main bass 130. Drum bass

132. Lower drum 134. Upper drum

220. Drum signal cable 220. Connection terminal

310. Main bass 330. Drum bass

340. Drum Assembly 370. Contact Springs

Hereinafter, the present invention will be described in more detail with reference to an embodiment shown in the accompanying drawings.

3 is an exploded perspective view schematically showing a drum signal cable connection structure according to the present invention.

Referring to the drawings, the drum assembly 340 is fixed to the drum base 330, the drum base 330 is fixed to the main base 310. The main circuit board 360 is disposed on the bottom of the main base 310.

According to a feature of the invention, the drum signal cable drawn out through the withdrawal groove of the drum assembly 340 is a rigid cable (342) to maintain a rigid state with a predetermined elasticity, the end of the rigid cable 342 The connection terminal 344 coupled to the contact terminal maintains contact with the connection terminal 350 of the main circuit board 360. The connection terminal 344 may be formed by arranging a plurality of conductive metal thin plates in a stripe shape on a material such as plastic. A plurality of contact springs 370 having a predetermined shape and elasticity are mounted on the connection terminal 350 of the main circuit board 360. The thin metal stripe of the connection terminal 350 is in contact with the contact spring 370, respectively.

As can be seen from the enlarged view in which the portion indicated by circle A in FIG. 3 is enlarged, the contact spring 370 has a fixed portion 372 and a contact portion 374. The contact spring 370 is formed by bending an elastic leaf spring in a predetermined shape at one end as shown in the figure. The fixing part 372 of the contact spring 370 may be fixed to the main circuit board 360 by soldering or screwing, and the contact part 374 is elastically spaced apart from the plane of the main circuit board 360. Stay intact.

The arrangement position of the circuit board side connection terminal 350 is that the connection terminal 344 formed at the end of the rigid cable 342 when the main base 310 and the main circuit board 360 are assembled with each other. 350 coincides with each other in the vertical direction. When the drum assembly 340 is fixed to the drum base 330, the connecting terminal 344 of the rigid cable 342 may coincide with the connecting terminal 344 on the main circuit board 360, only the drum assembly 340. The connection terminals 342 and 344 may be connected to each other only by assembling the components.

The magnetic recording and reproducing apparatus having the connection structure of the head drum signal cable connection terminal according to the present invention has the advantage of being easily and conveniently assembled and manufactured using a rigid cable and a connection terminal having a very simple structure. In addition, by minimizing the number of parts required for terminal connection, production costs can be reduced, thereby contributing to productivity.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, it is only an example and those skilled in the art may understand that various modifications and equivalent embodiments are possible therefrom. There will be. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (3)

A main base member; The main circuit board is assembled to a lower portion of the main base member; A magnetic recording and reproducing apparatus, comprising: a head drum assembly; A head drum signal cable member which is drawn out of a groove formed in the head drum assembly and is kept rigid with elasticity; A first connection terminal member attached to an end of the head drum signal cable member and having a contact in the form of a plurality of conductive thin stripe stripes; And a second connection terminal member having a plurality of contact spring members formed on the main circuit board. 2. The magnetic recording and reproducing apparatus according to claim 1, wherein the contacts in the form of a plurality of conductive thin stripe strips of the first connecting terminal member respectively contact the plurality of contact spring members of the second connecting terminal member. The magnetic recording and reproducing apparatus according to claim 1, wherein the contact spring member of said second connection terminal member has a fixing portion fixed to said main circuit board and a contact portion spaced from said main circuit board.