JPS6033669Y2 - microphone stand - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a stand for mounting a microphone at the tip of a boom, particularly the boom clamp portion.

Microphone stands are commonly used in which a boom is held at a predetermined angle at the top of the freestanding stand body, and a microphone is attached to the tip of the boom.
The boom microphone is attached to the stand body using a clamp mechanism so that its position and height can be adjusted.

As shown in Figs. 1 and 2, the clamp mechanism of a conventional microphone stand has a clamping part 2 of a boom 1 at the top.
and a center plate 5 which is located between two side plates 3.3 and both side plates and whose lower end shaft-like part is attached to the stand body 4, and which is interposed between the center plate 5 and both side plates 3 and 3. two rubber plates 6,
6 and an adjuster screw 7 that penetrates and tightens the overlapping portion of the side plate, rubber plate, and center plate, and the boom 1 is held between the rubber plates 6 and 6 by the elasticity and frictional force caused by tightening the adjuster screw 7. The side plates 3, 3 are fixed, and a microphone (not shown) attached to the tip of the boom 1 is held at a predetermined height position.

However, as the rubber plates 6, 6 age and lose their elasticity during use, the frictional force against the side plates 3, 3 and center plate 5 decreases, and even when the adjuster screws 7 are tightened, the If the side plates 3, 3 cannot be fixed and a heavy microphone is attached to the tip of the boom 1, the boom 1 will tilt due to its weight, and the microphone will gradually lower, making it difficult to maintain it in a fixed position. The disadvantage is that it cannot be done.

This invention was made in order to eliminate the above-mentioned drawbacks, and to provide a microphone stand that can maintain the elasticity of the rubber plate over a long period of time and that prevents the microphone from falling due to its weight. With the goal.

Embodiments of this invention will be described below with reference to FIGS. 3 to 5.

As shown in FIGS. 3 and 4, side plates 14 are arranged on both sides of a center plate 13 that fixes the shaft portion 11 at the lower end to the stand body 12.
3 and the corresponding surfaces of the side plates 14 and 14, respectively, and the tightening force of the adjuster screw 16 passing through the overlapping portion of the side plate, the buffer rubber plate, and the center plate 13 is controlled by the adjustment bar. 1
It can be adjusted by 7.

The center plate 13 has a lower half formed in a semicircular shape and an upper half formed in a rectangular shape centered on the through hole 18 of the adjuster screw 16, and the buffer rubber plates 15 and 15 overlapping on both sides of the center plate 13 are also formed in the same manner. It is formed in the shape of.

As shown in FIG. 5, on the surfaces of the buffer rubber plates 15 and 15 on both sides that overlap with the center plate 13, there are a plurality of annular protrusions 20 that are coaxial with the through hole 19 of the adjuster screw 16.
are provided, and a recess 21 is formed between the inner and outer protrusions 20.

The convex portion 20 is formed to have a trapezoidal cross-sectional shape, and the concave portion 21 has a cross-sectional shape into which the convex portion fits, and the buffer rubber plate 15 preferably has a hardness of 70 to 80.

Further, as shown in FIG. 4, on both sides of the center plate 13, an annular convex portion 22 with a diameter and cross-sectional shape that fits into the concave portion 21 of the buffer rubber plate 15, and a buffer rubber plate is provided between the convex portions 22. A recess 23 into which the protrusion 20 fits is formed.

Convex portion 2 of center plate 13 and buffer rubber plate 15.15
0 and the concave portion 23 and the convex portion 22 and the concave portion 21 are fitted into each other by an adjuster screw 16 that is tightened through the side plate 14.14, and the elasticity of the rubber plate 15.15 is utilized to the maximum in this fitted portion. , the frictional force with both side plates 14, 14 is maintained over a long period of time.

A protrusion 24 is provided in a bent shape at the upper end of both the buffer rubber plates 15.15 to abut the upper surface of the center plate 13, and serves as a rotation stopper to prevent rotation together with the side plate 14.14.

The side plates 14 and 14 on both sides have a boom 2 at their upper ends.
Five holding parts 26 are provided.

In the case of FIG. 3, this holding part 26 has a structure in which a tightening ring 28 is screwed onto the tip of a cylinder 27 into which the boom 25 is inserted, but as shown in the conventional example in FIG. It is also possible to adopt a structure in which it is clamped from both sides.

The microphone stand of this invention has the above-mentioned structure, in which the center plate 11 is attached to the upper end of the microphone stand main body 12 by means such as screwing, and the buffer comb plates 15, 15 and side plates 14 are stacked on both sides of the center plate 12. 14 with the adjuster screw 16, the boom 25 is fixed with the holding part 26 provided at the upper end of the side plate 14.14, and the microphone attached to the tip of the boom 25 is adjusted with the adjuster screw 16 to allow the boom 25 to swing. It is made to appear at a predetermined position by movement.

At this time, by tightening the adjuster screw 16, the side plate 14.14 is loosened f! The weight of the microphone is supported by the frictional force generated at the contact surface with the -1 mu plate 15.15.

In addition, the fitting portion between the convex portion 20, concave portion 21, and concave portion 21 of the buffer rubber plate 15.15 and the convex portion 22, and concave portion 23 of the center plate 13 increases the thickness of the buffer rubber plate 15.15, and improves elasticity. Since it is generated effectively, side plate 1
4.14 and the cushioning rubber plate 15.15 is maintained, and the position of the microphone does not change during use.

As described above, according to this invention, the overlapping surfaces of the center plate and the buffer rubber plates that overlap with each other in a non-rotating state are formed with concave and convex surfaces that fit into each other in an annular shape with the adjuster screw at the center. The wall thickness can be partially thickened to maximize elasticity, maintain elasticity over a long period of time, maintain frictional force with the side plates on both sides, and increase clamping force, making it easier to hold the microphone during use. Inconveniences such as position changes are completely eliminated.

Furthermore, since the tightening force applied by the adjuster screw is minimal since the cross-sectional area in contact with the rubber is small, the elasticity of the rubber plate will not be impaired by over-tightening.

Furthermore, since the buffer rubber plate is in a non-rotating state, the adjuster screws are rotated together by the rotational force when tightening the adjuster screws, so there is no possibility of surface wear.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a conventional microphone stand, Fig. 2 is a side view of the same, Fig. 3 is a partially cutaway front view of the microphone stand according to this invention, Fig. 4 is a longitudinal sectional view of the same, and Fig. 5 is a front view of the conventional microphone stand.
The figure is a perspective view of the cushioning rubber used in the above. 13...Center plate, 14...Side plate, 15...Buffer rubber plate, 16...Asia star screw, 20°22... Convex portion, 21°23... Concave portion, 24... Projection.

Claims (1)

[Scope of utility model registration request] Two side plates that hold the boom at the top, a center plate placed between both side plates, two buffer rubber plates sandwiched between corresponding surfaces of the center plate and both side plates, and a side plate and a buffer. It is composed of a rubber plate and an adjuster screw that is tightened by passing through the overlapping portion of the center plate, and a concave-convex surface is formed on the overlapping surface of the center plate and the buffer rubber plate that fits into each other in an annular shape with the adjuster screw at the center. , a microphone stand characterized in that the upper ends of both shock absorbing rubber plates are provided with protrusions on the east side that come into contact with the upper surface of the center plate.