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Drum pad

A drum pad and rubber technology, applied in percussion instruments, instruments, electro-acoustic instruments, etc., can solve the problems of difficult to achieve drum pads, unable to obtain rebound touch, etc., to enhance the coefficient of restitution, reduce inertial mass, and reduce pain. Effect

Active Publication Date: 2011-11-09
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By using only the olefin thermoplastic elastomer described in paragraph 0021, it is not possible to obtain a resilient very nice pad with suitable hardness
[0018] Like this, under the premise of very good sound attenuation ability, it is difficult to realize a kind of drum pad, and it can improve hitting feeling, and rebound is good, and when drum pad is hit with mallet, there is suitable space between mallet and striking surface. contact time

Method used

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Examples

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example 1

[0073] In Example 1, the manufactured diameter A drum pad 10 with a diameter of 260 mm and a thickness t of 20 mm was used as a sample. The foam material used is foamed silicone RTV rubber. Two-liquid RTV rubber KE521 (A / B) (trademark) manufactured by Shin Etsu Silicon Co., Ltd. was used.

[0074] FIG. 3( a ) is a diagram schematically showing a process of manufacturing the drum pad 10 according to Example 1. FIG.

[0075] First, liquid material A and liquid material B of KE521 weighing about 250 g (a total of half the volume of the mold 20) were weighed and mixed well. Then, as shown in Figure 3(a), the mixed materials A and B are injected into the inner diameter 260mm, thickness t1 is equal to the thickness t (20mm) of the mold 20, and the mold 20 is closed. At this time, the thickness t0 of the mixed material 12 was 10 mm. When the mold is left at room temperature for about 10 minutes, gelation begins, viscosity increases, foaming begins, and therefore volume increas...

example 2

[0091] The shape of the drum pad 10 manufactured according to Example 2 was the same as that of the drum pad 10 of Example 1. Materials used as the foam material are rubber materials mainly including BR (butadiene rubber) and NR (natural rubber). The mixing ratio of the rubber material is as follows: as an additive material of 60wt% of BR and 40wt% of NR, zinc oxide is 3wt%, stearic acid is 1wt%, sulfur is 6wt%, calcium carbide is 15wt%, carbon 10 wt%, and blowing agent (for example, 4,4'-OxybisBenzene Sulfonyl Hydrazide (4,4'-OxybisBenzene Sulfonyl Hydrazide) (its decomposition temperature is 160° C.)) is 4 wt%, as additive materials. These materials are stirred by using rollers to produce a compound.

[0092] 4( a ) and FIG. 4( b ) are diagrams schematically showing the process of manufacturing the drum pad 10 according to Example 2. FIG. First, as shown in FIG. 4(a), the produced compound is put into the first mold 21, pressed (press) at 130° C. for 7 minutes, and vulcani...

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Abstract

The invention provides a drum pad, characterized in that at least one part of a beaten surface which is deformed when beaten is made from rubber foam material with independent bubble, and contact time is between 3 to 9 m sec and coefficient of restitution of the part is 0.7 or more when the part made from foam material is beaten by a stick. The foam material has rubber rigidity between 10 to 60 in Asker rigidity C and loss angle tangent which is 0.1 or less at 20 DEG C. The contact time is the period from the time when the stick contacts with the beaten surface to the time when the stick departs from the beaten surface.

Description

technical field [0001] The present invention relates to a drum pad which is used as a pad for an electronic drum or a practice drum. Background technique [0002] In general, drum pads for electronic drums and the like are well known. For this type of drum pad, the hitting feel (hitting feel) is required to be as close as possible to that of an acoustic drum pad. [0003] Specifically, in order to achieve a good hitting feeling, good rebound characteristics, ie, a very good coefficient of restitution, are required when the pad is hit with a stick. If the pad doesn't rebound well, then repeated hit performance will be reduced. [0004] It's also important that the drum pad's striking surface be properly firm, as well as the contact time when hitting the pad with a mallet. For example, when the contact time is too long, repeated strike performance is reduced. When the contact time is too short, the hand or elbow will feel sore. [0005] In addition, the inertial mass of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10H3/14G10D13/02
Inventor 泽田修一桥本隆二
Owner YAMAHA CORP
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