JPS6321014Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a keyboard lid tilting braking device for a keyboard instrument having a keyboard lid that can be opened and closed using a hinge or the like that covers the keyboard from above.

In conventional keyboard instruments, the keyboard lid is generally attached via a hinge to the front end of a top plate that covers the rear upper surface of the instrument body so as to be openable and closable.

When the instrument is in use with the keyboard lid fully open, the angle between the keyboard lid and the horizontal plane containing the keyboard is an obtuse angle, and the keyboard lid is designed to prevent it from tilting toward the player due to its weight balance.
However, if an external force that disrupts the weight balance is applied to the instrument cabinet or the keyboard operating section, the keyboard lid may fall forward, which is not only dangerous for the player, but may also damage the instrument cabinet. , there was an inconvenience that there was a risk of damage.

The purpose of this invention is to prevent the instrument cabinet from being damaged or scratched by applying a brake even if the keyboard lid tries to tilt or tilts due to an external force, and also to prevent the player from being injured. In a keyboard instrument having an opening/closing keyboard lid that covers the keyboard from above, a fitting portion is provided at the other end of a connecting member whose one end is fixed to the keyboard lid and rotates as the keyboard lid is opened and closed, The present invention is characterized in that a damper member is provided on the rotational path of the fitting part, elastically sandwiching the fitting part from both sides, and having a pair of side pieces whose free ends are located on opposite sides.

In FIG. 2, reference numeral 1 denotes a connecting member whose one end is fixed to the pivot side of the keyboard lid 2. As shown in FIG.
A part of it is removably inserted into the hole 4 of.
5 is a damper member that engages with the fitting portion 6 provided at the other end of the connecting member 1 to brake this rotation;
It is fixed to, for example, a side plate 7a of a musical instrument cabinet 7 so as to be positioned on the rotational path of the fitting portion 6. Reference numeral 8 denotes a stopper made of rubber, resin, etc., which the connecting member 1 comes into contact with when the keyboard lid 2 is in the fully open position.

As shown in the third figure, the connecting member 1 is made of, for example, a plate-shaped rod, and the fitting portion 6 is provided on the plate surface at the other end.
A circular protrusion is formed.

The damper member 5 is made of an elastic and slippery material, and includes a pair of cantilever-shaped beams provided upright on both longitudinal edges of the elongated bottom plate portion 5a, for example, as shown in the fourth figure. side pieces 5b, 5b, the free ends of which are located opposite each other;
The distance between b and 5b is narrower than the diameter of the circular protrusion of the fitting portion 6.

Thus, in the device shown in the second figure, when the player is performing with the keyboard lid fully open as shown by the chain line, an external force is applied to the instrument cabinet 7 or the keyboard lid, causing the keyboard lid 2 to rotate forward. When the connecting member 1 is tilted, the circular protrusion of the fitting part 6 of the connecting member 1 will be as shown in FIG.
As shown in FIG.
deforms one of the left ends (as seen in the figure) while sliding between them, and from the middle part, as shown in FIG. 5B, it slides while deforming the other end, reaches the right end, and escapes. Therefore, the circular protrusion of the fitting part 6 is
It is held in the damper member 5 by the side pieces 5b, 5b under a constant pressure, and its rotational energy is absorbed by the temporary deformation of the side pieces 5b, 5b, so that the keyboard lid 2 is prevented from tilting rapidly. Ru.

When the damper member 5 is installed near the stopper 8, even if the keyboard lid 2 begins to rotate due to an external force, the circular protrusion of the fitting portion 6 at the other end of the connecting member 1 will not reach the vertical position. Both side pieces 5b,
5b, it is braked and does not rotate or tilt any further.

It should be noted that if the damper member 5 is disposed so that the keyboard cover 2 is removed from the closed or fully open state, it will not be deformed by the fitting portion 6 during performance and when not in use, and thus can withstand long-term use.

In this way, according to the present invention, a fitting part is provided at the other end of the connecting member whose one end is fixed to the keyboard lid, and the fitting part is elastically inserted from both sides on the rotational track of the fitting part, and Since the damper member has a pair of side pieces with free ends located on opposite sides, external force may be applied to the instrument cabinet or keyboard during use of the instrument, causing the fully opened keyboard lid to tilt toward the player. It also has the effect of braking the instrument's tilting, preventing injury to the performer, and preventing damage or damage to the musical instrument cabinet.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a keyboard instrument equipped with the keyboard lid tilting braking device of the present invention, FIG. 2 is a partially cutaway side view of an embodiment of the present invention, FIG. 3 is a perspective view of a connecting member, and FIG. The figures are perspective views of the damper member, Figures 5A and 5.
FIG. B is an explanatory diagram of the operating state of each damper member. DESCRIPTION OF SYMBOLS 1... Connection member, 2... Keyboard lid, 5... Damper member, 6... Fitting part.

Claims (1)

[Scope of utility model registration request] In a keyboard instrument having an opening/closing keyboard lid that covers a keyboard from above, a fitting portion is provided at the other end of a connecting member whose one end is fixed to the keyboard lid and rotates as the keyboard lid is opened and closed, and the fitting portion rotates. Tilt braking of a keyboard lid in a keyboard instrument, characterized in that a damper member is provided on a track, and has a pair of side pieces whose free ends are located on opposite sides of each other and which elastically sandwich a fitting part from both sides. Device.