CN218676449U

CN218676449U - Composite material drum

Info

Publication number: CN218676449U
Application number: CN202221577356.8U
Authority: CN
Inventors: 施磊; 于亮亮; 常红非; 李晓磊
Original assignee: Zhejiang Baihe Advanced Composites Co ltd
Current assignee: Zhejiang Baihe Advanced Composites Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2023-03-21
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a composite material drum, which comprises a drum body, an upper drum ring, a lower drum ring and 2 drum skins; the upper drum ring and the lower drum ring are detachably connected to the upper end and the lower end of the drum body respectively; the 2 drum skins are respectively fixedly arranged on the upper drum ring and the lower drum ring; the drum body comprises a plurality of drum body single pieces which are mutually spliced to form an integral structure; the single drum body sheet comprises an inner layer, a sandwich layer and an outer appearance layer; the inner layer, the sandwich layer and the outer appearance layer are bonded to each other. The utility model adopts the glass fiber composite material, the aramid fiber paper honeycomb and the epoxy resin adhesive film in combination, thereby improving the rigidity of the drum body and lightening the whole mass; moreover, the drum body design of the sandwich structure is adopted, so that the tone of the drum is well improved; and the utility model discloses this combined material drum body and upper and lower drum circle all can be dismantled, and convenient transportation is put with storing up.

Description

Composite material drum

Technical Field

The utility model relates to a percussion instrument technical field, more specifically say so and relate to a combined material drum.

Background

The national bass drum is a national musical instrument with distinct characteristics in China, and is basically characterized in that a drum surface is made of pure cowhide, a cylindrical wooden drum frame is made of pure cowhide, and the timbre is muddy, so that the national bass drum is suitable for being used or played in fixed places. The percussion instrument is an indispensable percussion instrument in festive events or ancient war generally, has long history and unique personality, has wide public foundation and is deeply popular with people of all nationalities. The dancing performance is vigorous and luxurious, has strong tendency, has beauty of daily life and dance art, explains people's literary habit by dancing language and the sprinkling of joy, and plays an irreplaceable role of other musical instruments in various cultural entertainment activities for thousands of years.

The existing national bass drum is basically characterized in that drum surfaces are made of pure cow leather, and drum-shaped wooden drums have deafness due to sound shock and long history and are deeply popular with people of all nationalities. However, the drum barrel and the drum head of the traditional bass drum are of an integral structure, cannot be disassembled, and are large in size and inconvenient to transport, store and place; and the wooden drum body is heavy and easy to break, so that the movement is difficult.

Therefore, it is one of the technical problems to be solved in the art to provide a composite drum which not only has enhanced structural rigidity, but also has light weight, is detachable, is convenient to transport and store, and can well improve the tone of the drum.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the above-mentioned problems in the background art, the present invention provides a composite drum.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken:

a composite material drum comprises a drum body, an upper drum ring, a lower drum ring and 2 drum skins; the upper drum ring and the lower drum ring are detachably connected to the upper end and the lower end of the drum body respectively; the 2 drum skins are respectively fixedly arranged on the upper drum ring and the lower drum ring;

the drum body is of a sandwich structure and comprises a plurality of drum body single pieces, and the drum body single pieces are mutually spliced to form an integral structure; the single drum body sheet comprises an inner layer, a sandwich layer and an outer appearance layer; the inner layer, the sandwich layer and the outer appearance layer are bonded and connected with each other.

Preferably, epoxy resin adhesive films are bonded on the upper surface and the lower surface of the sandwich layer; the sandwich layer is connected with the inner layer and the outer apparent layer in an adhesive mode through the epoxy resin adhesive films on the upper surface and the lower surface of the sandwich layer.

Preferably, the sandwich layer is aramid paper honeycomb.

Preferably, the inner layer and the outer appearance layer are both two layers of glass fiber fabric prepreg.

Preferably, the glass fabric prepreg layer is an electronic yarn.

Preferably, the plurality of drum body single sheets are detachably connected with each other through metal buckles and structural adhesive.

Preferably, the splicing part of each two drum body single sheets is reinforced and thickened by fiber prepregs.

Preferably, the inner layer and the outer apparent layer are both made of epoxy resin glass fiber prepreg.

Preferably, the upper drum ring and the lower drum ring are also made of epoxy resin glass fiber prepreg.

The utility model discloses for prior art gain following technological effect:

the utility model adopts the glass fiber composite material, the aramid fiber paper honeycomb and the epoxy resin adhesive film in combination, thereby improving the rigidity of the drum body and lightening the whole mass; moreover, the drum body design of the sandwich structure is adopted, so that the tone of the drum is well improved; and the utility model discloses this combined material drum body and upper and lower drum circle all can be dismantled, and convenient transportation is put with storing up.

Drawings

Fig. 1 is a schematic structural view of a composite drum according to the present invention;

FIG. 2 is a schematic structural view of a drum body and upper and lower drum rings of a composite material drum according to the present invention;

fig. 3 is a single sectional view of a drum body of a composite drum according to the present invention.

In FIGS. 1-3: 1. a drum body; 11. a single drum body; 111. an inner layer; 112. an inner core layer; 113. an outer appearance layer; 2. an upper drum ring; 3. a lower drum ring; 4. drum skin; 5. and (6) a metal buckle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1, the composite material drum comprises a drum body 1, an upper drum ring 2, a

lower drum ring

3 and 2 drum skins 4; the upper drum ring 2 and the lower drum ring 3 are respectively detachably connected to the upper end and the lower end of the drum body 1; the 2 drum heads 4 are respectively fixedly arranged on the upper drum ring 2 and the lower drum ring 3; the drum body 1 comprises a plurality of drum body

single pieces

11, and 4 drum body single pieces 11 are mutually spliced into an integral structure; the shell monolith 11 comprises an inner layer 111, a core layer 112 and an outer appearance layer 113; the inner layer 111, the core layer 112 and the outer appearance layer 113 are adhesively bonded to each other. Epoxy resin films are bonded on the upper surface and the lower surface of the sandwich layer 112; the sandwich layer 112 is bonded to the inner layer 111 and the outer appearance layer 113 through the epoxy resin adhesive films on the upper and lower surfaces thereof.

In this embodiment, the sandwich layer 112 is an aramid paper honeycomb.

In this embodiment, the inner layer 111 and the outer apparent layer 113 are both two prepreg layers of glass fiber fabric.

In this embodiment, the glass fiber fabric prepreg layer is an electronic yarn.

In this embodiment, the 4 drum shell single sheets 11 are detachably connected with each other through the metal buckles 5 and the structural adhesive.

In this embodiment, the joint of every two single drum shell sheets 11 is reinforced and thickened by using fiber prepregs.

Preferably or alternatively, the inner layer 111 and the outer apparent layer 113 are both made of epoxy resin glass fiber prepreg.

As a preferable or optional way of this embodiment, the upper drum ring 2 and the lower drum ring 3 are also made of epoxy resin glass fiber prepreg.

As a preferable or optional mode of the embodiment, the manufacturing method comprises: spreading out the selected drum skin 4, placing on the manufactured upper drum ring 2 or lower drum ring 3, slightly pressing the periphery to form a shape with force, marking the circle with ink, sequentially marking the circumference and the diameter, and equally dividing the circumference and the diameter; the redundant drum skin materials can be trimmed once again to determine the size; after subsequent soaking, peeling and punching, the drum skin 4 is fixed on the upper drum ring 2 and the lower drum ring 3; after drying and shaping, the drum can be installed on the drum body 1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The composite material drum is characterized by comprising a drum body (1), an upper drum ring (2), a lower drum ring (3) and 2 drum skins (4); the upper drum ring (2) and the lower drum ring (3) are detachably connected to the upper end and the lower end of the drum body (1) respectively; the 2 drum leathers (4) are respectively and fixedly arranged on the upper drum ring (2) and the lower drum ring (3);

the drum body (1) comprises a plurality of drum body single pieces (11), and the plurality of drum body single pieces (11) are mutually spliced into an integral structure; the single drum body sheet (11) comprises an inner layer (111), a sandwich layer (112) and an outer appearance layer (113); the inner layer (111), the sandwich layer (112) and the outer appearance layer (113) are adhesively connected to each other.

2. A composite drum as claimed in claim 1, wherein the upper and lower surfaces of the sandwich layer (112) are bonded with epoxy glue films; the sandwich layer (112) is bonded and connected with the inner layer (111) and the outer apparent layer (113) through the epoxy resin adhesive films on the upper surface and the lower surface of the sandwich layer.

3. A composite drum as claimed in claim 2, characterized in that the core layer (112) is an aramid paper honeycomb.

4. A composite drum as claimed in claim 2, characterised in that said inner layer (111) and said outer apparent layer (113) are both two layers of glass fibre fabric prepreg.

5. A composite drum as claimed in claim 4, characterised in that the glass fibre fabric prepreg layer is an electronic yarn.

6. A composite drum as claimed in claim 1, characterised in that the individual shell pieces (11) are detachably connected to each other by means of metal snap-fits (5) and structural glue.

7. A composite drum as claimed in claim 6, characterized in that the splicing of each two shell segments (11) is reinforced with fibre prepreg.