JPS591262Y2 - Knee pad for marching drum - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a knee pad for marching drums.

Traditionally, knee pads have been used when playing marching drums.

As shown in Figure 1, when a drum player marches with a marching snare drum 1 suspended from a band 2 worn around his shoulders or waist, or mounted on a special drum holder fixed to his body, This is to prevent the snare drum 1 from coming into contact with the person's leg and causing physical pain to the person's leg. By attaching it, it is constructed so that it can be folded toward the screen body 4 when not in use.

Figures 2a, l) and c show an example of a conventional knee pad of this type attached to the trunk body.

That is, the drum head 7 is uniformly supported and tensioned at a constant tension by the conventionally well-known support and tension mechanisms 6 at the openings at both ends, and the mounting member 8 is inspected with a set screw 9 at an appropriate location on the outer peripheral surface of the drum body 4. A backing plate 3 formed by bending a metal plate into a semicircular shape is connected to the mounting member 8 via a connecting mechanism 10.

The coupling mechanism 10 includes a substantially U-shaped first receiver rotatably connected to the mounting member 8 by a pin 11, and the first receiver is provided with a base 12 that is opposite to the base 12. Pin insertion holes 13 and 14 formed in a square and a circle, respectively, are coaxially protruded from the pair of legs 12 a and 12 b.

On the other hand, at the center of the outer peripheral surface of the backing plate 3, the first receiver is formed in a substantially U-shape like the base 12, but the distance between the opposing arms 15a and 15b is The arm portion 12
A stand 15 is fixed to the second receiver, which is larger than those of a and 12b.

The arm portions 15a, 15b have pin insertion holes 16, 17 coaxially formed in the same shape as the pin insertion holes 13, 14 of the arm portions 12a, 12b, that is, square and circular.

The push pin 18 that connects the first and second supports 12 and 15 has a tip end having a circular cross section and an integral square head 19 in the middle. is stand 1
2. When connecting 15, the tips of the above-mentioned both supports are attached to the base 1.
The compression coil spring 2 is inserted into the square pin insertion hole 16.13 drilled in the arms 15a and 12a of 5.12.
0, the tip end is inserted into the circular pin insertion hole 14°17 formed in the arm parts 12b, 15b, and at the same time, the square head 19 is inserted into the square pin insertion hole of the arm part 15a, 12a. It is inserted into 16 and 13.

The push pin 18 inserted in this way is prevented from coming off by the E ring 21, and the compression coil spring 20
By pressing the side surface of the square head 19, it is constantly urged upward in the figure.

In such a configuration, in order to fold and store the patch plate 3 on the side of the trunk body 4 as shown by the chain line in FIG.
against the compression coil spring 20 as shown in the figure.
arm portions 12a, 15 of the square head 19 by pressing in the direction
Remove the attachment of pin insertion holes 13 and 16 of arm part 12 a to the pin insertion holes 13 and 16, and while maintaining this state, rotate the backing plate 3 by 90 degrees toward the trunk body 4 side, and insert the pin of arm part 15 a into the pin insertion hole 13 of arm part 12 a. After aligning the insertion holes 16, the external force applied to the push pin 18 is removed and the square head 19 is inserted into the arm portion 12 again.
It is sufficient to fit and secure the pins into the pin insertion holes 13 and 16 of a and 15a.

As a result, the push pin 18 is prevented from rotating and the backing plate 3 is housed along the trunk body 4.

However, with such conventional padding plates, the angle of the padding plate 3 could not be freely adjusted to match the drum player's legs during use, and the intended purpose could not be achieved. .

That is, since the marching drum 1 is normally tilted and not parallel to the drum player, the pad plate 3 cannot bring its entire inner peripheral surface into surface contact with the legs, and the upper edge 3a
Alternatively, the lower edge 3b may come into line contact and dig into the leg, causing physical pain and making it impossible to withstand playing for a long time.

This idea was made in view of the above-mentioned drawbacks, and it has a simple structure that allows the angle of the patch plate with respect to the leg to be variably set, and the entire inner circumferential surface of the patch plate is brought into surface contact with the leg. This provides a knee pad for marching drums that reduces physical pain and allows for good drum performance.The feature is that the first and second supports are inserted through the pins of the base. At least one of the holes is provided with a plurality of locking portions, the push pin is provided with one or more engaging portions, and the locking portions and the retaining portion are engaged,
The structure is such that the angle of the backing plate relative to the leg during use can be variably set.

Hereinafter, one embodiment of this invention will be described in detail based on the drawings.

FIG. 3 is an exploded perspective view of the canopy according to this invention.

In order to avoid complication, the same members as in FIGS. 1 and 2 are designated by the same reference numerals, and their explanations will be omitted.

In the first receiver, pin insertion holes 13 and 14 having the same inner diameter are coaxially bored in a pair of legs 12 a and 12 b of the stand 12, and a locking part is provided in the arm part 12 a. One constituting groove 23 is formed so as to communicate with the upper part of the pin insertion hole 13.

The second receiver has a pin insertion hole 1 having the same inner diameter as the pin insertion holes 13 and 14 in the pair of arm portions 15a and 15b of the base 15.
6.17 are drilled coaxially, and the arm portion 15a is further provided with a plurality of grooves (five shown in this example) constituting a locking portion.
4 is inserted into the upper side of the pin insertion hole 16 (L16
They are formed radially around the center, and one end thereof communicates with the pin insertion hole 16, respectively.

On the other hand, the push pin 18 that connects the first and second supports 12.15 is entirely formed into a round rod shape except for the head 18a, and has an E-ring engagement near the tip. A locking annular groove 25 is formed, and a protrusion 26 constituting a retaining portion is provided protruding long along the pin axis direction near the head 18a.

To assemble the awning with this structure, as in the conventional structure described above, first attach the tip of the push pin 18 to the arm 15 a of the base 15.12, and
The compression coil spring 20 is inserted into the pin insertion holes 16 and 13 drilled in 12a, and the compression coil spring 20 is fitted to this tip. pin insertion holes 14. drilled in the arm portions 12b, 15b.
At the same time, the protrusion body 26 is inserted into the arm portion 17.
The groove 23 of the arm part 15 a and the groove 23 of the groove 24 of the arm part 15 a.
This is completed by fitting and securing the E-ring 21 into one groove corresponding to the annular groove 25, and then engaging the E-ring 21 with the annular groove 25 to prevent it from coming off.

Note that in the above configuration, the second receiver is connected to the arm portion 15 of the stand 15.
Although a plurality of grooves 24 are formed in the arm portion 12 of the stand 12, the invention is not limited thereto.
A plurality of grooves may be formed in the arm portion 12.
It may be formed on both a and 15a.

Further, a plurality of protrusions 26 of the push pin 18 may be provided.

Thus, according to such a configuration, during use,
Since the angle of the backing plate 3 can be arbitrarily adjusted by the opening angle α between adjacent grooves 24, the entire inner circumferential surface 30 of the backing plate 3 can be brought into surface contact with the legs of the drum player.

Therefore, the player's pain is significantly reduced, and it is possible to perform well for a long time.

FIG. 4 shows a modification of the embodiment shown in FIG.

In this embodiment, the first and second supports are pedestal 12.
The pin insertion holes 13.16 drilled in the arm portions 12a, 15a of 15 are formed in a regular hexagonal shape, and the push pin 1
Except for the point that a regular hexagonal protruding strip 31 is integrally provided at the middle part of 8, all other structures are the same as the embodiment shown in FIG.

In this case, the locking portions of the pin insertion holes 13 and 16 are formed by six corners where adjacent sides of a regular hexagon intersect, and the engaging portions of the push pin 18 are formed by each corner of the protrusion 31. has been done.

Therefore, even in such a structure, since the angle of the patch plate 3 with respect to the leg can be variably set at 60°, the entire inner circumferential surface 30 of the patch plate 3 can be brought into surface contact with the leg. It is clear that a similar effect can be obtained.

Note that the shapes of the pin insertion holes 13, 16 and the protrusions 31 are not limited to hexagonal shapes; if they are made into a polygonal shape larger than a hexagonal shape, the backing plate 3 can be adjusted at a smaller angle, and the surface contact with the leg can be ensured. Of course, this can be obtained.

Furthermore, although the above embodiment has been described with reference to a case where it is applied to a marching snare drum, it can also be applied to a marching timpani or the like without any modification.

As explained above, the knee pads for marching drums according to this invention are constructed so that the angle of the pads with respect to the legs can be freely set during use, and the entire inner circumferential surface of the pads is attached to the legs. Not only does it reduce the physical pain of the drum player and enable good performance for long periods of time, but it also has a simple structure and easy angle adjustment. The practical effects are very large.

[Brief explanation of drawings]

Figure 1 is a diagram showing a state in which a marching drum is played using a conventional knee pad, and Figure 2 shows the mounting structure of a conventional knee pad, where a is a perspective view, b is a plan view, and C is b. I-
3 is an exploded perspective view showing one embodiment of the knee pad according to the invention, and FIG. 4 is an exploded perspective view showing another embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Marching drum, 3... Backing plate, 4... Torso body, 10... Connection mechanism, 12... First The receiver is a stand, 13°14.16.
17...Pin insertion hole, 15...Second receiver is stand, 18...Push pin.

Claims (1)

[Scope of utility model registration request] In the knee pad for marching drums, in which a patch plate is rotatably connected to the drum body via a connecting mechanism, the connecting mechanism includes a first support fixed to the drum body;
The second holder fixed to the backing plate is inserted into the insertion hole formed in the pedestal, the first holder is inserted into the pedestal, and the second holder is inserted into the insertion hole formed in the pedestal, so that both holders connect the pedestal. a push pin, the first and second receivers are provided with a plurality of locking portions in at least one of the insertion holes of the base, and the push pin is provided with one or more retainers that engage with the locking portions. A knee pad for a marching drum, characterized in that a mating portion is provided, and the angle of the pad with respect to the leg can be variably set by engagement of the locking portion and the engaging portion.