JPS6331250Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a holder for a tone arm guide rail used in a linear tracking player.

Traditionally, record players have used S-shaped or J-shaped rotating tone arms, but when using this tone arm, horizontal tracking distortion occurs when playing records. The disadvantage was that it caused

The use of a linear tracking tonearm could be considered as a way to compensate for this drawback, but this tonearm has the disadvantage of being more expensive to manufacture than conventional rotary tonearms because it has a larger number of components. .

In particular, in the past, when attaching a guide rail that supports a linear tracking tone arm to a chassis, a screw-grooved hole was provided at the end of the guide rail, and the guide rail was secured in place by a screw.
In this case, since the work must be performed with the tone arm base attached to the guide rail, this conventional method makes the work difficult and reduces work efficiency.

Furthermore, it is difficult to reduce costs because it requires drilling holes in the guide rail and cutting threads into the holes.

The object of this invention is to obtain a guide rail holder for a linear tracking tone arm that is inexpensive, easy to install, and has high installation accuracy.

An embodiment of this invention will be described below with reference to figures. Figures 1, 2, and 3 are views showing an embodiment of this invention, with Figure 1 being a side view of the holder, Figure 2 being a plan view of the holder, and Figure 3 being a side view of the holder. FIG. 3 is a plan view showing a state in which the holder is actually attached to the chassis and holds the guide rail.

Further, in the figure, A is the pedestal of the tone arm, B is the holder, 1 is a guide rail holding part that is approximately cylindrical and has a slit-shaped opening on the side so that the cross section in the radial direction is C-shaped; 1a is the clamping part 1
a guide rail stopper protruding from the inner circumferential wall surface equidistant from both ends of the cylinder; 2 is a chassis mounting portion for fixing the clamping portion 1 to the chassis; 3 is a chassis mounting screw hole in the chassis mounting portion 2; 4 is a guide rail.

Note that the holding portion 1, the protruding portion 1a, and the attachment portion 2 are integrally molded from an elastic member. In this embodiment, the holder B is arranged such that both ends of the guide rail 4 are in contact with the stopper 1a when the guide rail 4 is held by the holding part 1, as shown in FIG.
Pair them in advance and leave a certain distance between them.
They are fixed to the chassis with screws in the same direction through screw holes 3.

At this time, when the guide rail 4 is placed on the opening of the clamping part 1 and force is applied to push it into the opening, the clamping part 1 is made of an elastic member, so The opening widens, the guide rail 4 is inserted into the clamping part 1, and the guide rail 4 is clamped by the clamping part 1 by the repulsive force of the elastic deformation at this time.

Furthermore, since the clamping part 1 has a stopper 1a on its cylindrical inner circumferential wall surface, the guide rail 4 is clamped also from its extending direction, so that it is completely held on the chassis and positioned more accurately. It is something that

In this way, the holder of this invention is integrally molded from an elastic member, and the shape is plane symmetrical in cross section, so the pair of holders can have the same shape, which allows only one mold to be used during molding. The holder is
It can be obtained cheaply.

And in the work of installing the guide rail 4,
Even when the pedestal A is attached to the guide rail 4,
The work is easier because you only need to push the guide rail 4 into the holder, and at the same time the guide rail 4
Since it is accurately positioned by the clamping portion 1 and the stopper 1a, high mounting accuracy can be achieved.

These effects therefore make it possible to obtain a linear tracking tone arm with extremely high productivity.

[Brief explanation of the drawing]

Figures 1, 2 and 3 show an embodiment of this invention, with Figure 1 being a side view and Figure 2 being a plan view.
FIG. 3 is a mounting plan view. 1...Guide rail holding part, 1a...Guide rail stopper, 2...Chassis mounting part, 3...Screw hole for chassis mounting, A...Tone arm production, B...For linear tracking tone arm Guide rail holder.

Claims (1)

[Scope of utility model registration request] a cylindrical guide rail clamping portion having a slit-like opening in a side surface so that the cross section is approximately C-shaped, and the shape of the inner peripheral portion of the cross section is approximately equal to the shape of the outer peripheral portion of the cross section of the guide rail; A guide rail holder for a linear tracking tone arm, comprising a guide rail stopper provided on the inner periphery of the tone arm and an L-shaped chassis mounting part, both parts being integrally molded from an elastic member. .