Drum pad and percussion instrument

Abstract

The utility model relates to a drum pad and a percussion instrument. The drum pad comprises a base layer made of a supercritical foaming elastomer material and a surface layer made of an elastomer material. The surface layer is laminated on the surface of the base layer and is bonded with the base layer by a cold bonding process. According to the drum pad provided by the utility model, the base layer and the surface layer are bonded through a cold bonding process, the combination is firm, the drum pad cannot become hard, and the drum pad has a good striking hand feeling; the surface layer is made of an elastomer material and has relatively high tear resistance, aging resistance, yellowing resistance and pollution resistance; the base layer is made of supercritical foaming elastomer materials, the density and inertial mass of the base layer are smaller, the beating hand feeling can be further improved, and noise is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of percussion instruments, in particular to a drum pad and a percussion instrument. Background Art

[0002] Percussion instruments are widely loved by music lovers and professional performers because of their rich timbres, rhythm variations and playing techniques. However, traditional percussion instruments such as congas, djembes and bongo drums, although made of natural materials and having superior hitting touch and sound characteristics, are difficult to control the sound, especially in noise-sensitive environments. In order to reduce noise while ensuring the hitting touch, modern percussion instruments have been designed.

[0003] As a kind of modern percussion instrument, electronic drums are popular among many drummers because of their advantages such as low noise, small volume, diverse timbres and convenient tuning. However, there are still certain deficiencies in the hitting touch of existing electronic drums. An ideal electronic drum pad should be as close as possible to the hitting touch of an acoustic drumhead, and at the same time, the sound generated during hitting should be as small as possible.

[0004] To meet the requirements, various types of electronic drum pads have emerged on the market, including pads made of acoustic drumheads, mesh materials, rubber, foam materials and foamed silicone materials. However, these pads are not entirely satisfactory in terms of hitting touch, sound insulation and durability, and there is still room for improvement. Summary of the Utility Model

[0005] Based on this, in view of the above problems, it is necessary to provide a drum pad and a percussion instrument with good hitting feel, low noise and good durability.

[0006] A drum pad, characterized in that it comprises: a base layer made of a supercritical foamed elastomer material and a surface layer made of an elastomer material;

[0007] The surface layer is laminated on the surface of the base layer and bonded to the base layer by a cold bonding process.

[0008] In one embodiment, the Shore C hardness range of the base layer is 23 - 30 °C; the Shore A hardness range of the surface layer is 45 - 80 °C.

[0009] In one embodiment, the thickness of the base layer is 8 - 12 mm; the thickness of the surface layer is less than 0.4 mm.

[0010] In one embodiment, the thickness of the base layer is 10 mm; the thickness of the surface layer is 0.2 - 0.3 mm.

[0011] In one embodiment, the ball drop rebound range of the base layer is 65% - 70%.

[0012] In one embodiment, the density range of the base layer is 0.1 to 0.22 g / cm3.

[0013] In one embodiment, the density range of the base layer is 0.12 to 0.2 g / cm3.

[0014] In one embodiment, the elasticity of the surface layer is not less than that of the base layer.

[0015] In one embodiment, the supercritical foamed elastomer material is supercritical foamed thermoplastic polyurethane; the elastomer material is thermoplastic polyurethane.

[0016] A percussion instrument, characterized in that it has the drum pad described in any one of the above.

[0017] Compared with the prior art, a drum pad and a percussion instrument provided by the present utility model have the following effects:

[0018] 1. The base layer and the surface layer are bonded by a cold bonding process, with firm bonding and without making the drum pad hard, and having a good hitting feel.

[0019] 2. The surface layer made of an elastomer material has strong tear resistance, aging resistance, yellowing resistance and stain resistance.

[0020] 3. The base layer made of a supercritical foamed elastomer material has a smaller density and inertial mass, which can further improve the hitting feel and produce less noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 It is a schematic diagram of the laminated structure of the drum pad in an embodiment of the present utility model.

[0023] Explanation of reference numerals: base layer 1, surface layer 2.

[0024] The realization of the object of the present invention, functional features and advantages will be further described in conjunction with the embodiments and with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following will provide a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. A lot of specific details are elaborated in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] It can be understood that when designing the drum pad in the present utility model, the following four aspects are mainly considered:

[0028] 1. Elasticity of the drum pad: The drum pad should have good elasticity, that is, possess an excellent recovery coefficient. If the elasticity of the drum pad is insufficient, the effect of repeated strikes will be affected.

[0029] 2. Hardness of the striking surface: The hardness of the striking surface of the drum pad should be moderate to ensure an appropriate contact time when the drumstick strikes the surface of the drum pad. If the contact time is too long, the effect of repeated strikes will be affected; while if the contact time is too short, it may cause discomfort in the hand.

[0030] 3. Inertial mass: The inertial mass of the drum pad should be as small as possible. Excessive inertial mass will cause discomfort in the hand.

[0031] 4. Sound insulation effect: The sound generated when striking the drum pad should be small enough, and the drum pad should have good sound attenuation ability to meet the requirements of sound insulation.

[0032] Based on this, a drum pad made of a supercritical foamed elastomer material prepared by a supercritical foaming process using pure physical foaming as the main body is designed. This drum pad has excellent striking feel, low noise, high durability, light weight, and environmental protection and recyclability; and has a simple structure, high production efficiency, is convenient for mass production, and has good commercial application prospects.

[0033] The following will provide a detailed description of the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0034] Refer to Figure 1 ,Figure 1 The schematic diagram of the drum cushion layer structure in an embodiment of the present utility model is shown, including a base layer 1 made of a supercritical foamed elastomer material and a surface layer 2 made of an elastomer material. The surface layer 2 is laminated on the surface of the base layer 1 and bonded to the base layer 1 by a cold bonding process.

[0035] Specifically, the surface layer 2 is laminated on the surface of the base layer 1, including but not limited to being laminated on the upper surface of the base layer 1, or on the upper surface and side surfaces of the base layer 1, or on the upper surface, lower surface and side surfaces of the base layer 1, and is designed according to specific requirements.

[0036] Among them, the base layer 1 is made of a supercritical foamed elastomer material, which is prepared by a supercritical foaming process of pure physical foaming. Compared with traditional chemical foaming processes such as rubber and silica gel foaming, the preparation process is cleaner and more environmentally friendly. Moreover, the supercritical foamed elastomer material has a finer cell structure and more stable performance, with a smaller density and inertial mass, which can reduce the discomfort of the hand during hitting.

[0037] The surface layer 2 is made of an elastomer material, which is prepared by a calendering process. It has strong tear resistance, aging resistance, yellowing resistance and stain resistance, and various surface textures can be set according to requirements, which can not only improve the durability of the drum pad, but also make the product more beautiful and meet the personalized customization needs.

[0038] The base layer 1 and the surface layer 2 are bonded by a cold bonding process. The bonding is firm and will not harden, making the drum pad have better flexibility, which can better optimize the hitting touch. And the firm bonding can effectively avoid delamination, thus maintaining a consistent hitting touch; it can also avoid the extra noise generated by the looseness between layers, effectively absorb and attenuate the vibration and sound generated by hitting, and improve the mute effect. Moreover, through the cold bonding process, the tight combination of the base layer and the surface layer is ensured, reducing the risk of delamination, improving the durability of the drum pad and extending the service life. Preferably, the cold rolling and film laminating process is used to bond the base layer 1 and the surface layer 2 together.

[0039] In addition, the drum pad is made of a layered structure. Therefore, the performance parameters such as the material elasticity and hardness of the base layer 1 and the surface layer 2 can be designed separately and then combined into a drum pad. This can not only improve the performance such as hitting touch, mute effect and durability, and optimize the overall playing experience; but also can achieve personalized customization according to the needs of the player.

[0040] In one embodiment, the Shore C hardness range of the base layer 1 is 23 - 30°C; the Shore A hardness range of the surface layer 2 is 45 - 80°C.

[0041] It can be understood that the Shore C hardness range of the base layer 1 is set to 23 - 30 °C, which has better softness and elasticity, can provide good buffering effect, make the hitting more natural and comfortable; and can effectively absorb and attenuate the vibration and sound generated by hitting, improving the sound insulation effect.

[0042] The Shore A hardness range of the surface layer 2 is set to 45 - 80 °C. While having wear resistance, it also has sufficient resilience to provide a better feel and feedback.

[0043] In one embodiment, the thickness of the base layer 1 is 8 - 12 mm; the thickness of the surface layer 2 is less than 0.4 mm.

[0044] It can be understood that a thicker base layer 1 can provide stable support, effectively simulate the hitting touch of an acoustic drum, and make the hitting more natural and comfortable.

[0045] A thinner surface layer 2 will not significantly affect the hitting feedback, enabling the drummer to directly feel the elasticity and rebound effect of the base layer, improving the accuracy and sensitivity of hitting.

[0046] Furthermore, the thickness of the base layer 1 is preferably 10 mm; the thickness of the surface layer 2 is preferably 0.2 - 0.3 mm.

[0047] In one embodiment, the ball drop rebound range of the base layer 1 is 65% - 70%.

[0048] It can be understood that a good ball drop rebound rate means that the drum pad can provide a moderate rebound force, enabling the drummer to feel an obvious rebound effect when hitting, similar to the hitting touch of an acoustic drum, and improving the naturalness and comfort of playing.

[0049] In this embodiment, setting the ball drop rebound range of the base layer 1 to 65% - 70% can ensure that the base layer 1 still maintains a consistent rebound effect after long - term use, provides a stable hitting experience, and will not affect the playing performance due to the increase in use time. It can also reduce the pressure and fatigue on the hand during hitting. Especially during long - term playing, it can provide a more comfortable playing experience and reduce the fatigue and discomfort of the hand and wrist.

[0050] In one embodiment, the density range of the base layer 1 is 0.1 - 0.22 g / cm3.

[0051] It can be understood that using a base layer with a lower density can make the drum pad lighter, easier to carry and install, while providing good hitting feedback, close to the touch of an acoustic drum. When the density of the base layer 1 is within the range of 0.1 - 0.22 g / cm3, it can have good sound absorption performance, effectively reduce the noise generated by hitting, and further improve the hitting effect.

[0052] Further, the density range of the base layer 1 is 0.12 to 0.2 g / cm3.

[0053] In one embodiment, the elasticity of the surface layer 2 is not less than that of the base layer 1.

[0054] It can be understood that this design ensures the balance of the overall performance of the drum pad, and can ensure that the drum pad still maintains a consistent hitting effect and elastic performance after long-term use, without the situation that the surface layer is too hard or too soft, making the drum pad perform more stably and reliably during playing and improving the playing experience.

[0055] In one embodiment, the supercritical foamed elastomer material is supercritical foamed thermoplastic polyurethane; the elastomer material is thermoplastic polyurethane.

[0056] Specifically, when preparing the drum pad, using thermoplastic polyurethane (TPU) as the raw material, a supercritical foaming process of pure physical foaming is used to prepare supercritical foamed thermoplastic polyurethane, and it is cut to form the base layer 1 with the required shape and size; using thermoplastic polyurethane (TPU) as the raw material, a calendering process is used to prepare the surface layer 2. An adhesive is evenly coated on the bonding surface of the base layer 1 and the surface layer 2, and the base layer 1 and the surface layer 2 are firmly bonded together by a cold rolling lamination process, and then it is cut to a suitable shape and size.

[0057] It is worth noting that, according to requirements, any one or more of the performance parameters in the above embodiments can be used to design the base layer 1 and / or the surface layer 2, so as to comprehensively improve the performance of the prepared drum pad in terms of hitting touch, sound insulation effect, durability, stability, light weight, etc.

[0058] In one embodiment, a percussion instrument is further provided, and this percussion instrument has the above drum pad structure.

[0059] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered as the scope described in this specification.

[0060] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A drum pad, characterized in that, Comprising: A base layer made of a supercritical foamed elastomer material and a surface layer made of an elastomer material; The surface layer is laminated on the surface of the base layer and bonded to the base layer by a cold bonding process; The supercritical foamed elastomer material is supercritical foamed thermoplastic polyurethane; the elastomer material is thermoplastic polyurethane.

2. The drum pad according to claim 1, characterized in that, The Shore C hardness range of the base layer is 23 - 30°C; the Shore A hardness range of the surface layer is 45 - 80°C.

3. A drum pad according to claim 1, characterized in that, The thickness of the base layer is 8 - 12 mm; the thickness of the surface layer is below 0.4 mm.

4. A drum pad according to claim 3, characterized in that, The thickness of the base layer is 10 mm; the thickness of the surface layer is 0.2 - 0.3 mm.

5. A drum pad according to claim 1, characterized in that, The ball drop rebound range of the base layer is 65% - 70%.

6. The drum pad according to claim 1, characterized in that, The density range of the base layer is 0.1 - 0.22 g / cm3.

7. A drum pad according to claim 6, characterized in that, The density range of the base layer is 0.12 - 0.2 g / cm3.

8. A drum pad according to any one of claims 1 to 6, characterized in that, The elasticity of the surface layer is not less than that of the base layer.

9. A percussion instrument, characterized in that, Having the drum pad according to any one of claims 1 to 8.

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