JPS6037715Y2 - tape recorder - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the sliding contact portion between a head stand to which an erasing/recording/reproducing head is attached and a chassis to which the head stand is slidably attached.

Usually, the head stand is made of metal, but in recent years, a chassis to which the head stand is slidably attached is made of synthetic resin.

The head stand is slidably attached to the chassis by the method shown in FIGS. 3 and 4.

In other words, in the figure, 1 indicates the erasing head 2 and the recording/reproducing head 3.
A guide portion 1a is formed at the front (upper side in FIG. 3) of the metal head stand.

Reference numeral 4 denotes a synthetic resin chassis to which the head stand 1 is slidably attached via a ball 5, and the guide portion 1a
A protruding piece 4a is formed to guide the.

By the way, the method for attaching the head stand 1 to the chassis 4 described above is based on the end face (
Since the protrusion 4a contacts the protrusion 4a of the synthetic resin chassis 4 and slides, the protrusion 4a is scraped when the head stand 1 slides, causing backlash in the guide portion and causing the head stand 1 to move in parallel. The disadvantage was that it could no longer hold.

This invention is an attempt to correct the above-mentioned drawbacks, and its purpose is to prevent the synthetic resin guide part from being scraped by the sliding of the head stand, and to prevent the head stand from being scraped even after many years of use. The purpose of the present invention is to provide a tape recorder capable of parallel translation.

Next, an embodiment of this invention will be described with reference to FIGS. 1 and 2.

Note that the same parts as in FIGS. 3 and 4 are represented by the same reference numerals, and details are omitted.

In this embodiment, the front part of the head stand 1 is divided into two parts, and guide pieces 1b bent into an L-shape are formed on both sides.

On the other hand, a guide R4b into which the guide piece 1b is inserted is bored in the chassis 4 by the length of the movement range of the head stand 1, and a guide punch 4c is provided on the outer side of the guide groove 4b.
is formed.

In the figure, reference numeral 6 denotes a presser plate that restricts the vertical movement of the head stand 1 via a ball 7, 8 a capstan shaft, 9 a pinch roller, and 10 a reel stand, all of which have a known structure.

In the above structure, the vertical portion 1c of the guide piece 1b bent downward is inserted into the guide groove 4b, and the outer surface of the vertical portion 1c is brought into contact with the guide punch 4c. Therefore, the guide R4b made of synthetic resin and the guide punch 4c are brought into contact with each other on the smooth surface of the head stand 1.

Therefore, even when the head stand 1 slides, the guide groove 4b and guide punch 4c will not be scraped.

As mentioned above, this idea is based on the fact that the guide part of the metal head stand is bent into an almost L-shape and guided into the guide groove of the synthetic resin chassis. Since the guide groove is in sliding contact with the groove, the guide groove is not scraped by the movement of the head stand, and can serve as a guide even after many years of use.

Although the above embodiment shows that the guide piece is guided by a guide groove, the guide piece may be guided by a portion that is bent upward and protrudes from the chassis.

[Brief explanation of drawings]

FIG. 3 is a plan view showing the relationship between the head stand and the chassis in a conventional tape recorder, FIG. 4 is an end view taken along the line ■-■ in FIG. 3, and FIG. 1 is a plan view of the tape recorder according to this invention. FIG. 2 is an end view taken along the line IV--■ in FIG. 1. 1...Head stand, 1b...Guide piece,
4...Chassis, 4b...Guide i,
4c...Guide pestle.

Claims (1)

[Scope of utility model registration request] A tape recorder comprising a metal head stand on which a head is placed, and a synthetic resin chassis to which the head stand is slidably attached, the head stand being bent into an approximately L-shape. The chassis has a pair of guide parts including a vertical part and an end surface, and the chassis has a pair of guide grooves or a guide punch at a position facing the guide part, and the pair of guide grooves or guide punches have the guide part. The end faces of can't touch each other,
and the outer surface of the vertical part of the guide part can come into contact with it,
Furthermore, it has a pair of holding members that restrict vertical movement while allowing parallel movement of the head stand with respect to the chassis, and the holding members hold a pair of balls holding the head stand and one of the pair of balls. 1. A tape recorder comprising: a presser plate that applies pressure.