JP5495184B2 - Electronic pad for striking - Google Patents

Description

  The present invention relates to a hitting electronic pad such as an electronic cymbal suitable for an electronic percussion instrument.

  Conventionally, an electronic percussion instrument is provided with an electronic pad such as an electronic cymbal instead of an acoustic cymbal. A hit on the electronic pad is detected, and a musical tone is generated based on the detection output. This type of electronic pad is usually supported by a pole of a stand. For example, in Patent Document 1 described below, the pad is attached to the pole by inserting the pole through a through hole provided in a hard frame and tightening it from above and below via a cushion material. In addition, a cover member made of a rubber material or the like is generally covered on the surface to be hit in order to improve the hit feeling and ensure quietness at the time of hitting (Patent Documents 1 and 2 below).

JP-A-10-207451 JP 2009-128800 A

  However, in the electronic pads of Patent Documents 1 and 2, the soft cover is fixed to the hard frame by bonding or the like. However, since both of them are kept in a fixed state by bonding, there is a possibility that they may be peeled off due to repeated performance hits or the cover may be lifted from the frame depending on variations in the bonding state. For this reason, there is room for improvement in workability when positioning both in the rotational direction and the horizontal direction with high accuracy and in a good adhesion state.

  The present invention has been made to solve the above-described problems of the prior art, and its purpose is to improve the workability of attaching the cover member to the frame and to strengthen the fixing state between the cover member and the frame. An object of the present invention is to provide an electronic pad for striking.

  In order to achieve the above object, a striking electronic pad according to claim 1 of the present invention is a striking electronic pad (PD) supported by a pole (12), and has a frame having a polygonal through hole (47). (40) and a cover member (20) integrally formed of an elastic material and fixed to the front side of the frame, the cover member having a polygonal cross-sectional outer shape that is the same polygon as the through hole, and the cover member There is a shaft portion (30) that is inserted and fitted into the through hole of the frame, and the shaft portion of the cover member is formed with a pole insertion hole (31) through which the pole is inserted. Along the back surface (42ab) of the frame around the hole, the extending piece (32A to 30A) extends from the portion (30A to 30C) of the shaft portion corresponding to each side of the polygon represented by the cross-sectional outline shape of the shaft portion. 32C) are connected and formed And wherein the are.

  Preferably, a planar outer shape (32out) that is integrally recognized from all the extending pieces is connected to top portions (30x to 30z) of all the inner angles of the polygon that the cross-sectional outer shape of the shaft portion exhibits. (Claim 2). Preferably, at least the outline shape in plan view of the portion where the outlines of adjacent extending pieces are connected to each other is an arc (Claim 3).

  Preferably, the polygon is a triangle (claim 4).

  Preferably, in the cover member, the frame is placed on the front side of a portion (23a) connected to the shaft portion along the surface (42aa) of the frame around the through hole and the extending piece (32). And the back side (claim 5).

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to the first aspect of the present invention, it is possible to improve the workability of attaching the cover member to the frame, and to firmly fix the cover member and the frame.

  According to the second aspect, when the cover member is attached to the frame, the extended piece is not easily broken, and workability is improved.

  According to the third aspect, the extended piece is hardly broken during the fixing operation.

  According to the fourth aspect, the number of times the extension piece is fitted is minimized, and workability is improved.

  According to the fifth aspect, since the frame can be fixed together through the meat part of the cover member at the time of tightening and fixing to the pole, the cover member and the frame can be reliably fixed.

It is the top view of a flame | frame among the components of the electronic pad for impact which concerns on the form of one embodiment of this invention, and a rear view. It is the top view and back view of a cover member among the components of the electronic pad for the impact. FIG. 3 is a cross-sectional view of a hitting electronic pad along the line AA in FIG. FIG. 4 is a partial cross-sectional view taken along line B-B in FIG. 3 (FIG. (A)) and a schematic back view around the shaft portion of the cover member (FIG. (B)). It is a typical back view of the modification of a shaft part and an extending piece. It is a fragmentary sectional view of the electronic pad for hitting of a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1A and 1B are a plan view and a back view of a frame among components of an electronic pad for striking according to an embodiment of the present invention. 2A and 2B are a plan view and a back view of a cover member among the components of the hitting electronic pad. FIG. 3 is a cross-sectional view of the hitting electronic pad along the line AA in FIG.

  The striking electronic pad PD (hereinafter referred to as “electronic pad PD”) according to the present embodiment is configured as a cymbal as an example, but may be configured as a hi-hat cymbal. A plurality of electronic pads PD having the same basic configuration are assembled to constitute an electronic percussion instrument. The electronic pad PD is mainly composed of a cover member 20, a frame 40 and a back cover 16.

  As shown in FIG. 3, the electronic pad PD is supported by the stand column 10. In particular, when used as a cymbal, it is supported slightly obliquely. However, in any case, since the electronic pad PD is held in a substantially horizontal state, the upper side in the holding state is called the front side and the lower side is called the back side. A support portion 11 is fixed to the upper portion of the stand column 10, and a pole 12 is fixed in a cylindrical portion extending upward in the support portion 11. The electronic pad PD is supported by the stand column 10 via the pole 12.

  Although the fixed state is schematically shown in FIG. 3, the pole 12 is inserted into a pole insertion hole 31 (details will be described later) of the electronic pad PD, and cushion materials 13 and 14 are interposed above and below the electronic pad PD. Is done. A female screw is formed at the upper end of the pole 12. By screwing the thumbscrew 15 into the pole 12 from above and tightening, the portion corresponding to the wing of the thumbscrew 15 (not shown in FIG. 3) presses the cushion material 13. As a result, the electronic pad PD is sandwiched and fixed between the thumbscrew 15 and the support portion 11 from above and below via the cushion members 13 and 14.

  The frame 40 is made of a hard material such as PP (polypropylene). The cover member 20 is integrally formed of an elastic material such as rubber and is softer than the frame 40. The back cover 16 is made of resin or the like.

  As shown in FIG. 1A, the frame 40 is formed in a substantially circular shape in plan view. On the front side of the frame 40, an arcuate portion 43 that forms a step and becomes a high portion is formed. An area other than the arcuate portion 43 is an area covered by the cover member 20. In FIG. 1A, the arcuate portion 43 is the rear side when viewed from the player, and the side of the outer edge 41 of the frame 40 that is not the arcuate portion 43 is the player side (front side). In the latter half of the frame 40, the front of the arcuate portion 43 is a cup-corresponding portion 42 that rises upward, and an equilateral triangular through hole 47 is formed in the center of the cup-corresponding portion 42 in plan view. ing.

  The front half of the surface of the frame 40 is in front of the through hole 47 and the inside of the outer edge 41 is a flat adhesive surface 40a. A first sheet sensor 44 is disposed on the upper surface of the outer edge portion 41 in the front half of the frame 40 by bonding or the like. In the first half around the through hole 47, the second sheet sensor 45 is disposed in a flat area by bonding or the like. Three engaging holes 46 are formed on the front side of the arcuate part 43 in the frame 40 so as to be connected to the arcuate part 43. Each of the sheet sensors 44 and 45 is a film sensor, but may be any type such as a piezoelectric type or a capacitor type as long as it senses a pressure change and independently outputs a detection signal.

  As shown in FIGS. 1B and 3, a piezo sensor 48 is disposed in the back cover 16 on the back surface 40 b of the frame 40. The piezo sensor 48 is composed of a piezoelectric element, but any type can be used as long as it can sense vibration. A signal output unit 17 is further disposed in the back cover 16.

  As shown in FIGS. 2A, 2 </ b> B, and 3, the cup portion 23 is formed so as to rise upward in the latter half of the cover member 20. A region from the cup portion 23 to the outer edge portion 21 corresponding to the edge portion is a main hitting surface portion 22. The cup part 23, the main hitting face part 22 and the outer edge part 21 cover the frame 40 and are hit with a stick by a performance operation. In the outer edge portion 21, not only the hitting, but also an operation (mute operation) of picking so as to be sandwiched from above and below by a finger.

  Three engagement claws 26 corresponding to the engagement holes 46 of the frame 40 are formed to project from the rear portion of the cover member 20. A folded portion 24 that covers the outer edge portion 41 of the frame 40 and is folded back is formed on the outer edge portion 21 on the front side of the cover member 20 (see FIG. 3). On the front half of the lower portion of the cup portion 23, a ridge portion 25 is formed to project (FIGS. 2B and 3).

  FIG. 4A is a partial cross-sectional view taken along line BB in FIG. As shown in FIGS. 3 and 4A, a hollow shaft portion 30 is formed in the center of the cup portion 23 along the vertical direction, and the inner diameter of the shaft portion 30 is a circular pole insertion hole 31. . The cross-sectional outline shape of the shaft portion 30 is the same equilateral triangle as that of the through hole 47. The apex of each inner angle of the equilateral triangle formed by the through hole 47 is slightly rounded (R-shaped), and the apex portions 30x, 30y, and 30z of the equilateral triangle formed by the cross-sectional outline shape of the shaft portion 30 are also Similarly rounded. Therefore, the cross-sectional outline shape of the shaft portion 30 is a size and shape that fits the through hole 47.

  FIG. 4B is a schematic back view around the shaft portion 30 of the cover member 20. The upper portion of the shaft portion 30 is connected to the cup portion 23, and extending pieces 32 (32A, 32B, 32C) are formed to extend from the lower portion of the shaft portion 30 (see also FIG. 3). When each of the extended pieces 32A, 32B, and 32C is viewed, the side corresponding portions 30A, 30B, and 30C corresponding to the respective sides of the triangle that the cross-sectional outline shape of the shaft portion 30 exhibits are connected and extended. When these are viewed as a whole, the outline 32out having a planar view shape that is integrally recognized from all the extending pieces 32A, 32B, and 32C is circular. The outer shell 32out is connected by the apex portions 30x, 30y, and 30z of the shaft portion 30, that is, the extended pieces 32 and the shaft portion 30 have the outer shell positions that coincide at the matching points Px, Py, and Pz.

  As shown in FIG. 3, in the assembled state of the frame 40 and the cover member 20, of the cup corresponding portions 42 of the frame 40, the inner edge portion 42 a corresponding in shape to the extended piece 32 is the extended piece. 32. The extending piece 32 is along the back surface 42ab of the inner edge portion 42a. In the attachment state of the electronic pad PD to the pole 12, the inner edge portion corresponding portion 23a that is a portion connected to the shaft portion 30 along the surface 42aa of the inner edge portion 42a of the cup portion 23, and the extending piece 32, The inner edge portion 42a is sandwiched between the front side and the back side. The inner edge portion 42 a, the shaft portion 30, and the extending piece 32 substantially become an attachment portion to the pole 12.

  By the way, in the assembled state of the frame 40 and the cover member 20, the engaging claws 26 of the cover member 20 are engaged with the corresponding engaging holes 46 of the frame 40. Further, the ridge portion 25 is located immediately above the second sheet sensor 45 and presses the second sheet sensor 45 when the cup portion 23 is hit. When the outer edge portion 21 is hit, the first sheet sensor 44 is pressed. The vibration of the frame 40 caused by hitting the hitting area including the main hitting surface portion 22 is detected by the piezo sensor 48.

  The piezo sensor 48 mainly detects vibration caused by hitting the main hitting surface portion 22 and outputs a detection signal indicating the presence / absence of hitting and the strength thereof. The second sheet sensor 45 detects a hit on the cup portion 23 and outputs a detection signal indicating the presence / absence of the hit and its strength. The first sheet sensor 44 detects a hit on the outer edge portion 21 and a mute operation pressed from above and below, and outputs a detection signal indicating the presence / absence of the hit and the mute operation and the hitting strength. These detection signals are output to the outside of the electronic pad PD via the signal output unit 17.

  Although the piezo sensor 48 and the sheet sensors 44 and 45 may output detection signals at the same time by hitting the frame 40, it is possible to arbitrarily set which sensor signal is used for the tone control. is there. For example, a sensor signal that outputs a signal indicating the largest value may be simply used for tone control. Further, the first sheet sensor 44 may be used exclusively for detection of a striking operation at the outer edge portion 21. Alternatively, the sheet sensors 44 and 45 may detect a hit in cooperation with the piezo sensor 48 and use the detection signals of the sheet sensors 44 and 45 to determine the hit position.

  Although not shown, the electronic percussion instrument includes a CPU, a storage device, various interfaces, and a tone generator. As an example, a CPU (not shown) performs musical tone control as follows. First, the presence / absence (timing) of the hit and the hit position are comprehensively determined from the output signals of the sensors. The tone to be pronounced varies depending on the striking position.

  The cover member 20 is assembled to the frame 40 as follows. First, three extending pieces 32 are passed through the through holes 47 one by one from the front side of the frame 40. Conventionally, as seen in a rubber bottom lid or the like attached to the bottom of a piggy bank, a configuration in which a lid member having an extended piece is attached to the through hole has both the through hole and the extended piece being circular. There are many cases. Since the outer diameter of the extended piece is larger than the through hole, the extended piece is passed through the through hole from an arbitrary position while being bent. If the extension piece is sufficiently soft, there is no problem in the work.

  However, the cover member 20 in the present embodiment determines the material and the hardness with emphasis on the feel of hitting and the quietness at the time of hitting, and therefore cannot be made as soft as the lid member of the piggy bank. Therefore, if the conventional shape (circular shape) such as the lid member of the piggy bank is employed as it is in the configuration of the assembly portion of the frame 40 and the cover member 20 of the present embodiment, the extending piece 32 is hard. If it does not cause excessive deformation, it is difficult to pass through the through hole, and when passing a certain part, the already passing part may come off, which makes the operation difficult.

  However, in the present embodiment, the through-hole 47 and the shaft portion 30 are triangular, and the extended pieces 32A, 32B, 32C are divided into coincident points Px, Py, Pz and become independent extended pieces. (FIG. 4B). Therefore, first, it is easy to pass the first extending piece 32 (for example, the extending piece 32A) through the through hole 47. When passing the next extended piece 32 (for example, the extended piece 32B), if the tip of the extended piece 32B is bent slightly downward and pushed from above or pulled from below, the extension that has already penetrated is extended. The extending piece 32B passes easily without the installation piece 32A coming out. The third extending piece 32C is passed in the same manner.

  Thus, the extended pieces 32 can be passed one by one in order while maintaining the inserted state of the extended pieces 32 already inserted, and the workability is good. In particular, since the outline 32out of the extended piece 32 as a whole is connected by the top portions 30x, 30y, and 30z, the extended piece 32 is not easily broken during work. Since the outer shell 32out is circular, manufacturing by molding is easy. When the three extending pieces 32 are inserted, the shaft portion 30 is inserted and fitted into the through hole 47.

  Next, the corresponding three engagement claws 26 of the cover member 20 are inserted into the three engagement holes 46 of the frame 40 and engaged. Next, a double-sided tape or an adhesive is applied to the adhesive surface 40a of the frame 40, and the cover member 20 is attached. The first sheet sensor 44 and the second sheet sensor 45 are disposed at an appropriate stage before the cover member 20 is bonded to the bonding surface 40a. Next, while pulling the outer edge portion 21 of the cover member 20 forward, the folded portion 24 is fitted to the outer edge portion 41 of the frame 40 so that the folded portion 24 covers the back side of the outer edge portion 41. Thereby, the cover member 20 is fixed to the frame 40. About the arrangement | positioning time to the flame | frame 40 of the back cover 16 and its interior component, it does not ask | require before and after the cover member 20 adhering.

  When the cover member 20 is fixed to the frame 40 and the electronic pad PD is completed, the cover member 20 is fixed to the pole 12 in use. As shown in FIG. 3, the cushion material 14 is attached to the support portion 11, the pole 12 and the cylindrical portion of the support portion 11 are inserted into the pole insertion hole 31, and the cushion material 13 is disposed thereon, and the thumbscrew 15 Is screwed onto the pole 12.

  In a state where the inner edge portion 42a of the frame 40 is sandwiched between the inner edge portion corresponding portion 23a of the cover member 20 and the extending piece 32, these are interposed between the thumbscrew 15 and the support portion 11 via the cushion members 13 and 14. It is pinched. Thereby, since the frame 40 is fixed in a fastened state via the meat part of the cover member 20, the cover member 20 and the frame 40 can be reliably fixed.

  Further, since the shaft portion 30 has elasticity, when the thumbscrew 15 is tightened, the pole insertion hole 31 is contracted inward and is in close contact with the pole 12 via the cylindrical portion of the support portion 11. As a result, the function of preventing rotation of the electronic pad PD with respect to the pole 12 is fulfilled, and the vibration transmission is suppressed and the buffering function is fulfilled. In particular, the cross-sectional outline shape of the shaft portion 30 is a triangle and is not similar to the cross-sectional shape of the pole 12, so that the method of contracting the pole insertion hole 31 due to elastic deformation of the shaft portion 30 is not uniform in the circumferential direction, There are places where the pole 12 is strongly tightened at three places. This contributes to improving the anti-rotation function by enhancing the tightening effect of the pole 12. If it restrict | limits to this viewpoint, the cross-sectional outline shape of the axial part 30 and the cross-sectional shape of the pole 12 should just not be a similar shape, and are not restricted to the combination of a triangle and a circle.

  According to the present embodiment, the cover member 20 includes the shaft portion 30 in which the pole insertion hole 31 is formed, the cup portion 23, the main striking face portion 22, and the outer edge portion 21, and is integrated with an elastic material softer than the frame 40. The shaft portion 30 is fixed to the pole 12 in a state where the shaft portion 30 is inserted and fitted into the through hole 47. Accordingly, the hit feeling and quietness are ensured by the appropriate elasticity of the cover member 20, and it is not necessary to provide a detent member or a buffer member in contact with the outer periphery of the pole insertion hole 31. A rotation stop function and a buffer function can be secured. Furthermore, since not only the bonding surface 40a but also the elastic shaft portion 30 is fitted into the through hole 47, the fixing state of the cover member 20 and the frame 40 can be strengthened. Further, since the cover member 20 is integrally formed, the configuration is simple and the manufacture is easy.

  Moreover, since the shaft portion 30 and the through hole 47 are fitted in the same triangle instead of a circle, the rotational direction and horizontal direction positioning of the cover member 20 and the frame 40 can be performed with high accuracy. Further, the extended pieces 32A, 32B, and 32C are formed so as to extend from the triangular side equivalent portions 30A, 30B, and 30C exhibited by the shaft portion 30 along the back surface 42ab of the inner edge portion 42a. As a result, the workability of attaching the cover member 20 to the frame 40 is improved. In particular, since the outline 32out of the extended piece 32 as a whole is connected by the top portions 30x, 30y, and 30z, the extended piece 32 is not easily broken during work, and workability is improved. In addition, even if there is some variation in the bonding state on the bonding surface 40a, the possibility that the cover member 20 peels off or rises from the frame 40 is reduced. This effect is further promoted by the cooperation with the folded portion 24 provided to wrap the outer edge portion 41 of the frame 40. That is, since the folded portion 24 provided so as to wrap the outer edge portion 41 of the frame 40 is formed integrally with the shaft portion 30, the cup portion 23, the main striking surface portion 22, and the outer edge portion 21, from the shaft portion 30 to the outer edge portion 21. It is possible to suppress the floating of the cover member 20 in the entire area, and it is possible to further strengthen the fixing state between the cover member 20 and the frame 40. This is also advantageous from the viewpoint of simplification of the manufacturing process and cost reduction.

  Further, since the extending piece 32 is formed continuously from the lower portion of the shaft portion 30 along the back surface 42ab of the inner edge portion 42a, the shaft portion 30 is difficult to be removed from the through hole 47, and the cover member 20 and the frame 40 The fixing state of can be further strengthened.

  Moreover, since the cross-sectional outline shape and the through-hole 47 of the axial part 30 are the same triangles and are fitted, the shift | offset | difference of the rotation direction with respect to the flame | frame 40 of the cover member 20 is prevented, and the adhering state is made stronger. Can do.

  It should be noted that the shaft portion 30 and the through hole 47 are triangular as long as they have a rotation stopping function and a buffering function for the pole 12 without compromising the hit feeling and quietness, and without requiring a dedicated member. It is not essential to provide the extended piece 32.

  Further, as far as improving the workability of attaching the cover member 20 to the frame 40, the shapes of the shaft portion 30 and the through hole 47 are not limited to triangles, and the outer shape of the extending piece 32 is also circular. Not limited to. FIG. 5 shows these modifications.

  5A to 5E are schematic back views of modified examples of the shaft portion 30 and the extending piece 32. FIG. In any modification, the shape of the through hole 47 is assumed to be the same polygonal shape as the shaft portion 30 and a fitting shape. From the viewpoint of facilitating the operation by minimizing the number of times the extending piece 32 is passed through the through hole 47, the cross-sectional outline shape of the shaft portion 30 is ideally a triangle, but other polygonal shapes may be used.

  For example, as shown in FIG. 5A, the cross-sectional outline shape of the shaft portion 30 is a square shape, and the outline shape 32out of the extension piece 32 in a plan view is designed to be circular so as to pass through the top portions of the four inner corners. May be. Although not shown in FIG. 5A because it is a schematic diagram, the top of the square inner corner of the shaft portion 30 should be rounded as in the example of FIG. The same applies to the examples.

  Moreover, the cross-sectional outer shape of the shaft part 30 may be a pentagon, and the outer shape 32out of the planar view shape of the extending piece 32 may be designed to be circular so as to pass through the top of the inner angle (see FIG. 5B). Or the cross-sectional outline shape of the axial part 30 may be made into a rhombus, and the outline 32out of the planar view shape of the extending piece 32 may be designed to be elliptical so as to pass through the apex of the inner corner (see FIG. 5C). .

  Further, the outer shell 32out is not limited to a circular shape, and the extending pieces 32A, 32B, and 32C may be formed so as to extend from the polygonal side equivalent portions 30A, 30B, and 30C that the shaft portion 30 exhibits. . For example, as shown in FIG. 5D, extending pieces 32A, 32B, and 32C are formed to extend from the triangular side equivalent portions 30A, 30B, and 30C. The outline 32out recognized from the whole of the extended pieces 32A, 32B, and 32C is connected by the top portions 30x, 30y, and 30z, and the extended positions of the extended piece 32 and the shaft portion 30 are coincident points Px, Py. , Pz.

  In addition, when the effect that the extended piece 32 is not easily broken during the work is not required, the shape of the outer shell 32out can be a shape that is not connected by the top portions 30x, 30y, and 30z, as shown in FIG. It is. On the contrary, it is desirable that at least the outline shape in plan view of the portion where the outlines of the adjacent extension pieces are connected to each other is an arc as long as the effect is obtained that the extension pieces 32 are not easily torn during the work. . The examples of FIG. 4B and FIGS. 5A to 5C satisfy this.

  Speaking of having a rotation stopping function and a buffering function for the pole 12 without impairing the hit feeling and quietness and without requiring a dedicated member, as shown in FIG. The through hole 47 may be circular instead of polygonal.

  FIG. 6 is a partial cross-sectional view of a modified electronic pad for impact. In this modification, a hi-hat cymbal is taken as an example. The through hole 47 is circular. Further, the shaft portion 30 has a circular cross-sectional outline shape, and the constricted portion 30a also has a circular cross-sectional outline shape. The constricted portion 30 a is fitted in the through hole 47. However, as compared with the configuration shown in FIG. 3, the length of the shaft portion 30 in the vertical direction is longer, and the portion corresponding to the extended piece 32 is thicker in the vertical direction. Therefore, the pole insertion hole 31 is fitted to the pole 12 through the cylindrical portion of the support portion 11 in a long region. As a result, it is difficult for the electronic pad PD to rotate with respect to the pole 12, and the load caused by the impact on the frame 40 is reduced, so that the durability is maintained.

  Note that when the electronic pad PD is configured as a hi-hat cymbal, it is conceivable to use a hi-hat controller (not shown) operated by a pedal together. In that case, if the stepping operation is detected and the hitting sound is controlled by the detection signal, the electronic pad PD itself does not need to be configured to move up and down.

  PD electronic pad (balling electronic pad), 12 poles, 20 cover member, 23a inner edge corresponding part, 24 folded part, 30 shaft part, 31 pole insertion hole, 32 extension piece, 40 frame, 41 outer edge part, 42aa surface , 42ab back surface, 47 through hole, 30A, 30B, 30C side equivalent part, 32out outline, 30x, 30y, 30z top part

Claims (5)

An electronic pad for striking supported by a pole,
A frame having a polygonal through hole;
A cover member formed integrally with an elastic material and fixed to the front side of the frame;
The cover member has a shaft portion in which a cross-sectional outer shape is the same polygon as the through hole and is inserted and fitted into the through hole of the frame.
A pole insertion hole for inserting the pole is formed in the shaft portion of the cover member,
Along the back surface of the frame around the through-hole, an extending piece is formed to extend from the portion of the shaft portion corresponding to each side of the polygon that the cross-sectional outline shape of the shaft portion exhibits. An electronic pad for striking, characterized by being.   2. The outer shape of the planar view that is integrally recognized from all the extending pieces is connected to the tops of all the inner angles of the polygon that the cross-sectional outer shape of the shaft portion exhibits. Stroke electronic pad.   3. The electronic pad for striking according to claim 2, wherein at least the outer shape in plan view of the portion where the outer shells of adjacent extending pieces are connected to each other is a circular arc.   The hitting electronic pad according to claim 1, wherein the polygon is a triangle.   The cover member is configured such that the frame is sandwiched from the front side and the back side by a portion connected to the shaft portion along the surface of the frame around the through hole and the extending piece. The electronic pad for impact according to any one of claims 1 to 4.

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