TWM556393U - Cajon - Google Patents

Abstract

The present invention discloses a wooden box drum comprising: a rectangular wooden box and forming a hollow resonance chamber in the wooden box, the wooden box having six faces, the front side serving as a face of the wooden box drum, and the wooden box on the lateral sides of the front side The relative positions of the first opening and the second opening respectively communicating with the resonance chamber are used as the speaker holes of the wooden box drum, so the position in the playing field is not restricted; the first reflection in the resonance chamber of the wooden box The plate and the second reflecting plate, the first reflecting plate and the second reflecting plate can block the sound generated by the striking surface from passing through the speaker hole directly without any blocking condition, so that the sound emitted from the striking surface is reflected at least once and then Passing out the wooden box through the speaker hole can change the sound transmission path or transmission distance between the striking surface and the speaker hole, thereby changing the sound effect of the wooden box drum, for example, the bass will become thicker, and the middle and high sounds can distinguish the sound level. The effect of the response.

Description

Wooden drum

This creation relates to a musical instrument, in particular a wooden drum.

Cajon, or a wooden drum, is usually a box-like wooden percussion instrument. When playing, the sheet of the front of the wooden box is slap by hand, and the sound is similar to a drum (also known as a drum). Because it can play sounds similar to jazz drums, and is easier to carry and use than jazz drums, it has become a learning and use by many percussionists in recent years.

The speaker holes of the traditional wooden box drum are arranged on the back of the wooden box, and the curved speaker holes are round holes, and the sound will be diffused from the speaker holes when the wooden box drum is tapped. The player usually sits on the top surface of the wooden box drum, and the two feet are placed on the sides of the wooden box drum, and the posture and center of gravity of the body are adjusted to tilt the wooden box drum backwards to enhance the resonance effect of the wooden box. .

The speaker holes of the traditional wooden drum are placed on the back of the wooden box, and the sound field can only be formed behind the wooden drum. Therefore, the sound field on the left and right sides of the wooden drum and the sound field in the front are weak, making the traditional wooden box The placement of the drum in a venue that contains many instruments is limited.

In the approved "Taiwan drum structure improvement" of the new Taiwan Patent Certificate No. TW M459493U1, a wooden box drum with circular perforations on both sides of the wooden box is proposed, although it can be produced on both sides of the wooden box drum. Sound field, but a large part of the sound produced by the front of the wooden box drum will be directly emitted from the perforations on both sides, which will not produce good resonance effect inside the wooden box. If this is the case, the sound quality is not very good in terms of bass and treble.

In the disclosed U.S. Patent No. US 2014/0041508 A1, a wooden box drum having a speaker hole on the side of a wooden box is disclosed, but only a single side speaker hole, this design will still make the wooden box drum contain many The placement of the instrument in the playing field is limited. In the published U.S. Patent No. 9,208,760 B2, an improved wooden box drum comprising more than one opening for sounding, the interior of the wooden box of the wooden drum is distinguished A resonance chamber and a large number of reflective blocks are placed. Although this structure can make the sound of the wooden drum drum richer and more varied, its construction is very complicated and it is not easy to get started. It is difficult for novices to exert rich and varied sound effects.

The technical problem to be solved by the present invention is to provide a wooden box drum having a speaker hole on both sides and a reflection plate inside, which can solve the problem that the position of the traditional wooden box drum in the performance venue including many instruments is limited. You can also change the sound of the wooden drum.

In order to solve the above technical problems, the technical proposal of the wooden box drum proposed by the present invention comprises: a rectangular wooden box and a hollow resonance chamber formed in the wooden box, the wooden box having six faces, wherein the front side of the wooden box serves as a wooden box drum The other five faces of the wooden box include a left side surface, a right side surface, a bottom surface, a top surface and a back surface, and the relative positions of the wooden box on the lateral sides of the front surface respectively have a first opening and a second opening communicating with the resonance chamber a speaker hole for use as a wooden drum (if not specified, the speaker hole described below includes a first opening and a second opening), the resonance chamber has a first reflector and a second reflector, and the first reflector The position is between the straight line connecting the front surface and the first opening, and the second reflecting plate is located on the straight line connecting the front surface and the second opening, and the sound of the front side of the wooden box is tapped. At least once in the resonance chamber and then through the first The wooden box is passed out from the mouth and the second opening.

In an embodiment of the present creation, the shape of the first opening and the second opening is any one of a circle, an arc, a rectangle, and a polygon.

In an embodiment of the present invention, the first opening may be a single one, or a plurality of juxtaposed in the same extending direction; wherein the second opening may be a single one, or a plurality of juxtaposed in the same extending direction .

In an embodiment of the present invention, the first opening and the second opening are respectively located on the left side surface and the right side surface adjacent to the front surface, and the first reflecting plate is interposed between the front surface and the first opening by the left side surface of the wooden box. The position begins to obliquely extend toward the back side of the wooden box to at least block the position of the first opening, and the second reflecting plate starts to obliquely toward the wood from the position between the front side and the second opening on the right side surface of the wooden box The back side of the box extends to a position that at least blocks the second opening.

In an embodiment of the present invention, the first opening is located at a top corner position adjacent to the front side and the left side surface, and the second opening is located at a top corner position adjacent to the front side and the right side surface, wherein the direction of the first opening faces the left front of the wooden box Direction, the direction of the second opening is directed to the right front direction of the wooden box, and a sound field can be formed on both sides and the front side of the wooden box drum; wherein the first reflecting plate is obliquely directed toward the back side of the wooden box from the edge of the front side adjacent to the left side surface Extending to a position that at least blocks the first opening, the second reflecting plate extends obliquely toward the back side of the wooden box from the edge of the front side adjacent to the right side surface to a position that at least blocks the second opening.

In an embodiment of the present invention, the first opening is located at a left edge position of the front surface, and the second opening is located at a right edge position of the front surface, wherein the directions of the first opening and the second opening are toward the front of the wooden box; wherein the first reflecting plate Starting from the left side edge of the front side, the oblique direction extends toward the back side of the wooden box to at least the position blocking the first opening, and the second reflecting plate is from the right side of the front side The edge begins to obliquely extend toward the back of the wooden box to a position that at least blocks the second opening.

In an embodiment of the present creation, the first opening and the second opening extend from top to bottom from a position adjacent the top surface of the wooden box to a position adjacent to a bottom surface of the wooden box.

In an embodiment of the present creation, the shape of the reflecting plate includes any one of a rectangle and a triangle.

In an embodiment of the present creation, the inner side of the front side of the wooden box is provided with a sound line.

In an embodiment of the present creation, a plurality of foot pads are provided below the bottom surface.

The beneficial effect of the creation is that the sound box holes on both sides of the wooden box can form a sound field on the left and right sides and/or the front side of the wooden box drum, so that the sound can be clearly heard on the left and right sides of the wooden box drum, which can be solved. The problem that the traditional wooden box drum is placed in a playing field containing many musical instruments is limited. On the other hand, the inside of the wooden box has a reflecting plate, which can block the sound generated by the striking surface from passing through the speaker hole without any blocking condition. Therefore, the sound emitted from the striking surface is reflected at least once and then passed through the speaker hole. Out of the wooden box, you can change the sound transmission path or transmission distance between the face to the speaker hole, and then change the sound of the wooden drum, for example, the bass will become thicker, and the middle and high sounds can distinguish the response of the sound level. .

10‧‧‧ Wooden Box

11‧‧‧ positive

12‧‧‧ left side

13‧‧‧ right side

14‧‧‧ bottom

15‧‧‧ top surface

16‧‧‧Back

21‧‧‧ first opening

22‧‧‧second opening

31‧‧‧First reflector

32‧‧‧second reflector

40‧‧‧foot pads

50‧‧‧Sound

C‧‧‧ resonance chamber

Fig. 1 is a view showing the appearance of a first embodiment of the present creation.

Fig. 2 is an exploded perspective view showing the embodiment of Fig. 1.

Fig. 3A is a front view of the embodiment of Fig. 1.

Fig. 3B is a left side view of the embodiment of Fig. 1.

Fig. 3C is a cross-sectional structural view showing the embodiment of Fig. 1 .

Fig. 4 to Fig. 6 are partial structural views of the present creation, showing the construction of several embodiments of the speaker hole.

Fig. 7 to Fig. 8 are partial structural views of the present invention, showing the construction of several embodiments of the reflecting plate.

Fig. 9 is a top plan sectional view showing another embodiment of the present creation.

Fig. 10 is a top plan sectional view showing another embodiment of the present creation.

The positional relationship described in the following embodiments includes upper, lower, left and right, and unless otherwise specified, is based on the direction indicated by the components in the drawing.

Please refer to FIG. 1 and FIG. 2 and FIGS. 3A to 3C. The preferred embodiment of the present wooden drum comprises: a rectangular wooden box 10 and a hollow resonance chamber C formed in the wooden box 10, wood The box has six faces, wherein the front side 11 of the wooden box 10 serves as a striking face of the wooden box drum, and the other five sides of the wooden box 10 include a left side surface 12, a right side surface 13, a bottom surface 14, a top surface 15, and a back surface 16, one of which In a preferred embodiment, the front surface 11 may be made of wood or other materials, and the left side surface 12, the right side surface 13, the bottom surface 14 and the top surface 15 are composed of wood boards having a thickness relatively larger than that of the front surface 11, and the back surface 16 is composed of Made of thin wood, it can soften the sound produced when the front surface 11 is slap to obtain a softer sound; the wooden box 10 has a first opening 21 and a second with the resonance chamber C at opposite positions on the lateral sides of the front surface 11, respectively. The opening 22 is used as a speaker hole of the wooden box drum, and the resonance chamber C has a first reflection plate 31 and a second reflection plate 32. The position of the first reflection plate 31 is between the front surface 11 and the first opening 21 On the path of the line, the position of the second reflecting plate 32 is between the front surface 11 and the second opening 22 On the straight line path, the sound from the front side 11 of the tapping wooden box 10 is reflected at least once in the resonance chamber C before the wooden box 10 is passed through the first opening 21 and the second opening 22.

The wooden box 10 of the present invention has a speaker hole (including the first opening 21 and the second opening 22) on both sides of the wooden box 10 to form a sound field on the left and right sides of the wooden box drum, so that both sides of the wooden box drum can be By clearly hearing the sound, it is possible to solve the problem that the traditional wooden box drum is placed in a playing field containing many instruments.

Due to the blocking of the first reflecting plate 31 and the second reflecting plate 32, there is no straight sound transmission path that allows the sound emitted when the flapping front surface 11 is vibrated to be directly emitted from the first opening 21 and the second opening 22. Therefore, the sound emitted by the flapping front 11 is reflected at least once in the resonance chamber C and then transmitted out of the wooden box 10 through the speaker hole, and the sound transmission path or transmission distance between the front surface 11 and the speaker hole can be changed (please refer to The sound transmission path indicated by the dotted arrow in Fig. 3C, in turn, changes the sound effect of the wooden drum, for example, the bass becomes thicker, and the middle and high sounds can better distinguish the response of the sound level.

In the preferred embodiment of the present invention, the inner side of the front side 11 of the wooden box 10 is provided with a sound line 50. The sound line 50 can be of a fixed or movable configuration, and is not creative to those skilled in the art. Under the premise of labor, the construction of the sounding wire 50 and the manner of its installation are to be understood by referring to generally known techniques, and only one of the embodiments is illustrated in the drawings, and is not limited thereto.

When playing the wooden box drum, the player sits on the top surface 15 of the wooden box drum and pats the front side 11 of the wooden box 10 with a hand. If the position of the tapping is close to the upper side or the edge of the front side 11 of the wooden box 10, a high pitch is generated. If the position of the tap is close to the center of the front surface 11 of the wooden box 10, a low sound is generated. In the preferred embodiment of the present invention, a plurality of foot pads 40 are disposed below the bottom surface 14.

Referring to FIG. 3B, in the preferred embodiment of the present invention, the first opening 21 and the second opening 22 extend from the position adjoining the top surface 15 of the wooden box 10 from the top to the bottom of the wooden box. . In other words, the highest point and the lowest point of the first opening 21 and the second opening 22 (speaker hole) should be as close as possible to the top surface 15 and the bottom surface 14 of the wooden box 10. Thus, the high-pitched area of the front side 11 (the side close to the front side 11) The high-pitched portion produced by the edge position belongs to the high-pitched area. The high-pitched portion produced can be emitted from the closest position of the speaker hole faster and closer, and similarly, the bass generated in the low-range area of the front side 11 (below the center of the front side 11 belongs to the low-range area) Some of them can be emitted from the closest position of the speaker hole faster and closer, reducing the number of reflections of the high-pitched portion and the bass portion in the resonance chamber C or other disturbances to attenuate the quality of the treble and bass.

In a preferred embodiment of the present invention, the shapes of the first opening 21 and the second opening 22 are circular (see Figure 4), curved (see Figure 6), rectangular (see Figure 3B), and polygons. Any of them.

In a preferred embodiment of the present invention, the first opening 21 may be a single one (FIG. 4) or a plurality of juxtaposed in the same extending direction (see FIG. 5); wherein the second opening 22 may be a single One (same as Figure 4), or multiple in parallel in the same extension direction (same figure 5).

Referring to FIG. 2, FIG. 7, and FIG. 8, in the preferred embodiment of the present invention, the shapes of the first reflecting plate 31 and the second reflecting plate 32 include any one of a rectangle and a triangle. The triangular first reflecting plate 31 and the second reflecting plate 32 may be arranged in an upright manner (see Fig. 7) or in an inverted manner (Fig. 8), for the first reflection of the erected triangular shape. The plate 31 and the second reflecting plate 32, the treble can pass through the first reflecting plate 31 and the second reflecting plate 32 relatively quickly, and the bass is relatively slow to pass through the first reflecting plate 31 and the second reflecting plate 32; For the first reflecting plate 31 and the second reflecting plate 32 of the triangular arranged upside down, the high pitch will pass slowly through the first reflecting plate 31 and the second reflecting plate 32, and the bass will pass relatively faster through the first reflecting plate 31. And the second reflecting plate 32; therefore, the first reflecting plate 31 and the second reflecting plate 32 of different shapes can change the sound transmission path or transfer between the front surface 11 to the speaker hole (including the first opening 21 and the second opening 22) Distance, which changes the sound of the wooden drum, for example, the bass will become thicker, and the middle and high sounds will be better. Identify the effect of the response of the sound level.

In the preferred embodiment of the present invention, the first opening 21 and the second opening 22 and the first reflecting plate 31 and the second reflecting plate 32 include the following configurations.

Referring to FIG. 3C, in the preferred embodiment of the present invention, the first opening 21 and the second opening 22 are respectively located on the left side surface 12 and the right side surface 13 adjacent to the front surface 11, and the first reflection plate 31 is made of the wooden box 10. The left side surface 12 of the left side surface 12 is inclined to extend toward the back surface 16 of the wooden box 10 at a position between the front surface 11 and the first opening 21 to at least block the first opening 21, and the second reflection plate 32 is made of a wooden box. The position on the right side face 13 of the 10 between the front face 11 and the second opening 22 begins to obliquely extend toward the back face 16 of the wooden box 10 to a position that at least blocks the second opening 22.

Referring to FIG. 9, in another preferred embodiment of the present invention, the first opening 21 is located at a top corner position adjacent to the front surface 11 and the left side surface 12, and the second opening 22 is located adjacent to the front surface 11 and the right side surface 13. a top corner position, wherein the direction of the first opening 21 faces the left front direction of the wooden box 10, and the direction of the second opening 22 faces the right front direction of the wooden box 10, a sound field may be formed on both sides and the front side of the wooden box drum; The reflecting plate 31 is inclined from the edge of the front surface 11 adjacent to the left side surface 12 toward the back surface 16 of the wooden box 10 to at least the position blocking the first opening 21, and the second reflecting plate 32 is adjacent to the edge of the right side surface 13 by the front surface 11. The portion begins to obliquely extend toward the back surface 16 of the wooden box 10 to a position that at least blocks the second opening 22. In other words, the first opening 21 is located at a chamfered surface where the front side 11 and the left side surface 12 abut, and the second opening 22 is located at a chamfered surface where the front side 11 and the right side surface 13 abut.

Referring to FIG. 10, in the preferred embodiment of the present invention, the first opening 21 is located at the left edge position of the front surface 11, and the second opening 22 is located at the right edge position of the front surface 11, wherein the first opening 21 and the second opening 22 are The direction is toward the front of the wooden box 10, which can be in front of the wooden box drum a sound field; wherein the first reflecting plate 31 extends obliquely toward the back surface 16 of the wooden box 10 from the left edge of the front surface 11 to at least a position blocking the first opening 21, and the second reflecting plate 32 is from the right side of the front surface 11. The edge begins to obliquely extend toward the back surface 16 of the wooden box 10 to a position that at least blocks the second opening 22.

Although the present invention has been disclosed above by the above embodiments, it is not intended to limit the present invention, and those skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of patent protection is subject to the definition of the claims of the present application.

Claims (10)

A wooden box drum comprising: a rectangular wooden box and forming a hollow resonance chamber in the wooden box, the wooden box having six faces, wherein the front side of the wooden box serves as a face of the wooden box drum, and the other five of the wooden box The face includes a left side face, a right side face, a bottom face, a top face and a back face, and the opposite positions of the wooden case on the lateral sides of the front face respectively have a first opening and a second opening communicating with the resonance cavity as the wooden case a speaker hole of the drum, the resonance chamber has a first reflection plate and a second reflection plate, the first reflection plate is located on a path connecting the straight line between the front surface and the first opening, the second reflection The position of the plate is between the line connecting the front surface and the second opening, and the sound of the front face is reflected at least once in the resonance cavity before passing through the first opening and the second opening. Out of the wooden box. The wooden box drum according to claim 1, wherein the shape of the first opening and the second opening is any one of a circle, an arc, a rectangle, and a polygon. The wooden box drum according to claim 1, wherein the first opening may be a single one or a plurality of juxtaposed in the same extending direction; the second opening may be a single one or be juxtaposed in the same extending direction. Multiple. The wooden box drum according to claim 1, wherein the first opening and the second opening are respectively located on the left side surface and the right side surface adjacent to the front surface, and the first reflecting plate is on the left side surface of the wooden box Starting at a position between the front surface and the first opening, obliquely extending toward the rear surface direction of the wooden box to at least a position blocking the first opening, the second reflecting plate being the right side surface of the wooden box A position between the front surface and the second opening begins to obliquely extend toward the rear surface direction of the wooden box to a position at least blocking the second opening. The wooden box drum according to claim 1, wherein the first opening is located at a top corner position adjacent to the front surface and the left side surface, and the second opening is located at a top corner position adjacent to the front surface and the right side surface, the first The direction of the opening faces the left front direction of the wooden box, and the direction of the second opening faces the right side of the wooden box a front direction; the first reflector extends from the edge of the front surface adjacent to the left side surface toward the back surface of the wooden box to at least a position blocking the first opening, and the second reflector is adjacent to the front surface The edge of the right side surface begins to obliquely extend toward the back side of the wooden box to a position that at least blocks the second opening. The wooden box drum according to claim 1, wherein the first opening is located at a left edge position of the front surface, the second opening is located at a right edge position of the front surface, and the direction of the first opening and the second opening is toward the wooden box a front side of the front reflector that extends obliquely toward the back side of the wooden box to at least a position blocking the first opening, the second reflecting plate being at a right edge of the front side The oblique direction begins to extend toward the back side of the wooden box to a position that at least blocks the second opening. The wooden box drum of claim 1, wherein the first opening and the second opening extend from top to bottom from a position adjacent to the top surface of the wooden box to a position adjacent to the bottom surface of the wooden box. The wooden box drum according to claim 1, wherein the shape of the first reflecting plate and the second reflecting plate includes any one of a rectangle and a triangle. The wooden box drum according to claim 1, wherein the inner side of the front side of the wooden box is provided with a sound line. The wooden box drum of claim 1, wherein the bottom surface has a plurality of foot pads.