Pedal mechanism for a drum

Abstract

The invention discloses a pedal mechanism of a drum, comprising a supporting base, a shaft, two bearings and a pedal plate. The supporting base has a bottom plate and a shaft seat. The shaft is arranged in the shaft hole of the shaft seat, so that the two ends of the shaft protrude from the shaft seat to sequentially form a left protruding part, a central part and a right protruding part. The two bearings are respectively installed in the left protruding part and the right protruding part of the shaft. The pedal plate has a pedal part and a cover part. The left and right spaces are formed between the pedal part and the cover part. The cover part is detachably connected to the pedal part. In this way, the two bearings can be clamped between the supporting base and the pedal plate, so that the two bearings are positioned in the left or right space to reduce movement. In turn, the pedal part can approach or move away from the bottom plate stably and reduce shaking through the two bearings when being stepped on.

Description

Technical Field

[0001] This invention relates to a foot pedal mechanism for a percussion instrument drum, and more particularly to a mechanism that can clamp a bearing between the pedal and the cover to reduce the chance of the bearing being moved, thereby reducing the shaking generated when the foot pedal mechanism is stepped on. Background Technology

[0002] A typical jazz drum set consists of multiple drums with different timbres, at least one percussion instrument, and a foot pedal mechanism. The foot pedal mechanism has a pedal and a drumstick. The operator can use both hands to hold the drumsticks and use their feet to step on the pedal, so that the drumsticks and drumsticks can strike different drumheads at the same time. This allows the operator to use both hands and feet to play multiple drum instruments simultaneously.

[0003] The foot pedal mechanism of a musical instrument drum usually has a base that contacts the ground and a foot pedal connected to the base. The foot pedal is for the operator to step on, so that the drumsticks connected to the foot pedal can be moved away from or strike the drumhead. However, the base and the foot pedal are often connected by springs, screws or other locking components, which creates a gap between the base and the foot pedal. As a result, when the operator steps on the foot pedal, the foot pedal will wobble from side to side, making it impossible for the foot pedal to be operated stably. Summary of the Invention

[0004] The main objective of this invention is to provide a foot pedal mechanism for a musical instrument drum with an improved foot pedal assembly connected to a support base, so that two bearings can be sandwiched between the foot pedal and the cover, and the two bearings are positioned in the left or right space. Thus, the foot pedal can be stably approached or moved away from the base plate through the two bearings, which can relatively reduce the chance of shaking when the foot pedal mechanism is operated.

[0005] A secondary objective of the present invention is to provide a foot pedal mechanism for a musical instrument drum with an improved foot pedal mechanism structure, such that the axle has a central portion of a polygonal column and two cylinders disposed on opposite sides of the central portion, so that when the pedal rotates relative to the base plate, the central portion of the axle is fixed by a second screw and cannot rotate relative to the base plate, and the cylinders of the axle rotate with the bearing.

[0006] The invention provides a foot pedal mechanism for a musical instrument drum, characterized in that it includes:

[0007] A support base has a base plate and a bearing seat located at the rear end of the base plate, the bearing seat having a shaft hole;

[0008] A shaft member is disposed in the shaft hole, such that both ends of the shaft member protrude from the shaft seat to sequentially form a left convex portion, a central portion and a right convex portion;

[0009] Two bearings are respectively mounted on the left and right protrusions of the shaft; and

[0010] A foot pedal has a foot pedal and a cover located below the foot pedal. A left space and a right space are formed between the foot pedal and the cover. The cover is detachably connected to the foot pedal, such that one of the two bearings is clamped in the left space and the other of the two bearings is clamped in the right space.

[0011] The foot pedal mechanism of the musical instrument drum, wherein the axle seat and the base plate are fixed by a first screw, and the axle seat and the shaft are positioned by a second screw.

[0012] The foot pedal mechanism of the musical instrument drum, wherein the axle seat is provided with a first screw hole that engages with the first screw and a second screw hole that engages with the second screw, and the second screw hole communicates with the axle hole, so that the axle can be fixed by the second screw and cannot rotate relative to the axle seat.

[0013] The foot pedal mechanism of the musical instrument drum, wherein the central part of the shaft is a polygonal column, and the left convex part and the right convex part are both cylinders, and the second screw enters the shaft hole to press against one of the planes of the polygonal column.

[0014] The foot pedal mechanism of the musical instrument drum, wherein the pressure member includes two cover bodies arranged in a spaced and mirror-like manner and two countersunk screws, such that the two cover bodies are respectively fixed to opposite sides of the foot pedal by the two countersunk screws.

[0015] The foot pedal mechanism of the musical instrument drum, wherein the cover includes an opening portion that mates with the countersunk screw and a clamping portion that aligns with the shaft hole, the clamping portion having a recess adjacent to the shaft hole and a flange that covers the shaft hole.

[0016] The foot pedal mechanism of the musical instrument drum, wherein the cover further includes a positioning part, such that the positioning part and the clamping part are respectively located on opposite sides of the opening, the positioning part being a protrusion inserted into the foot pedal, so that the cover can be quickly and accurately locked at a set position under the foot pedal by the protrusion and the flange.

[0017] The foot pedal mechanism of the musical instrument drum, wherein the recess has a first semicircular groove and a second semicircular groove with a radius smaller than the first semicircular groove, the first semicircular groove contacts the bearing, and the second semicircular groove accommodates one of the left convex portion or the right convex portion.

[0018] The foot pedal mechanism of the musical instrument drum has a left recess and a right recess at the bottom of the pedal component. The left recess, together with the recess and the flange, forms the left space, and the right recess, together with the recess and the flange, forms the right space.

[0019] A foot pedal mechanism for a musical instrument drum, characterized in that it comprises:

[0020] A foot pedal has a foot pedal and a bearing located below the foot pedal, the bearing having a shaft hole;

[0021] A shaft member is disposed in the shaft hole, such that both ends of the shaft member protrude from the shaft seat to sequentially form a left convex portion, a central portion and a right convex portion;

[0022] Two bearings are respectively mounted on the left and right protrusions of the shaft; and

[0023] A support base has a base plate and a cover located at the rear end of the base plate. A left space and a right space are formed between the base plate and the cover. The cover is detachably connected to the foot pedal, such that one of the two bearings is clamped in the left space and the other of the two bearings is clamped in the right space.

[0024] The invention is characterized in that the foot pedal mechanism of the musical instrument drum has a bearing seat, a shaft, and two bearings. The bearing seat is assembled to a support base, the shaft is disposed in the shaft hole of the bearing seat, and the two bearings are respectively installed at two opposite ends of the shaft. A left space and a right space are formed between the pedal and the cover. The cover is detachably connected to the pedal, such that one of the two bearings is clamped in the left space and the other bearing is clamped in the right space. Furthermore, the bearing seat has a first screw hole for engaging a first screw and a second screw hole for engaging a second screw. The bearing seat and the support base... The base plates are fixed together by a first screw, and a second screw hole connects to the shaft hole, allowing the second screw to enter the shaft hole and press against the shaft. The shaft seat and the shaft are then positioned by the second screw, ensuring that the shaft can be fixed by the second screw and cannot rotate relative to the shaft seat. In this way, the two bearings can be clamped between the support base and the foot pedal and respectively positioned in the left or right space, reducing movement in the left or right space. Consequently, the foot pedal can reduce wobbling and stably approach or move away from the base plate through the two bearings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the foot pedal mechanism of a musical instrument drum in the first preferred embodiment of the present invention;

[0026] Figure 2 This is an exploded view of the foot pedal mechanism of a musical instrument drum in the first preferred embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of the foot pedal mechanism of the musical instrument drum in the first preferred embodiment;

[0028] Figure 4 This is a schematic diagram of the support base in the first preferred embodiment;

[0029] Figure 5 This is a schematic diagram of the foot pedal in the first preferred embodiment;

[0030] Figure 6 This is a schematic diagram of the gland member in the first preferred embodiment;

[0031] Figure 7 This is a schematic diagram showing the foot pedal being away from the support base in the first preferred embodiment;

[0032] Figure 8 This is a schematic diagram showing the relationship between the bearing, bearing, shaft and gland in the first preferred embodiment;

[0033] Figure 9 This is a cross-sectional view of the bearing seat, shaft member, and second screw in the first preferred embodiment;

[0034] Figure 10 An exploded view of the foot pedal mechanism of the musical instrument drum in the second preferred embodiment;

[0035] Figure 11 This is a cross-sectional view of the bearing seat, shaft member, and second screw in the second preferred embodiment;

[0036] Figure 12 This is a schematic diagram of the foot pedal mechanism of the musical instrument drum in the third preferred embodiment;

[0037] Figure 13 This is a schematic diagram of the support base in the third preferred embodiment;

[0038] Figure 14 This is a schematic diagram of the foot pedal in the third preferred embodiment.

[0039] Explanation of reference numerals in the attached drawings: 1-Foot pedal mechanism; 2-Foot pedal device; 21-Spring tension adjustment device; 22-Rotating shaft; 23-Drumstick; 24-Pivoting part; 25-Transmission component; 26-Positioning bracket; 27-Adjusting component; 28-Spring assembly; 29-Operating handle; 3-Support base; 31-Base plate; 32-Shaft seat; 321-Fixing part; 322-Pivoting part; 323-First screw hole; 324-Second screw hole; 325-Shaft hole; 33-First screw; 34-Second screw; 35-Protruding rib; 36-Heel plate part; 37-Locking hole part; 4-Shaft; 41-Left protrusion; 42-Central part; 43- 44-Right convex part; 45-Cylinder; 46-Polygonal column; 47-Flat surface; 5-Bearing; 51-Round hole; 6-Foot pedal; 61-Step piece; 611-Connecting part; 612-Through hole; 613-Groove; 614-Left concave part; 615-Right concave part; 62-Cover piece; 63-Cover body; 631-Clamping part; 632-Positioning part; 633-Opening part; 634-Internal contour; 635-Protruding column; 64-Counterhead screw; 641-External contour; 65-Recess; 651-First semicircular groove; 652-Second semicircular groove; 66-Flange; 7-Left side space; 8-Right side space. Detailed Implementation

[0040] The present invention will be further described below with reference to specific embodiments and accompanying drawings, and the advantages and features of the present invention will become clearer with the description.

[0041] Please see Figure 1 and Figure 2 As shown, in the first preferred embodiment, the foot pedal mechanism 1 of the musical instrument drum of the present invention is assembled to the foot pedal device 2 of a jazz drum. The foot pedal device 2 of the jazz drum also has a spring tension adjustment device 21, a rotating shaft 22, a drumstick 23, a pivot part 24, and a transmission member 25. The spring tension adjustment device 21 includes a positioning bracket 26, an adjustment member 27, a spring assembly 28, and an operating handle 29. The adjustment member 27 and the operating handle 29 are respectively connected to the positioning bracket 26, and the spring assembly 28 is connected between the positioning bracket 26 and the adjustment member 27. In addition, the rotating shaft 22 is respectively connected to the positioning bracket 26, the drumstick 23, and the pivot part 24, and the transmission member 25 is connected between the pivot part 24 and the foot pedal mechanism 1.

[0042] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in the first preferred embodiment, the foot pedal mechanism 1 of the musical instrument drum mainly consists of a support base 3, a shaft 4, two bearings 5, and a foot pedal 6. The support base 3 has a base plate 31, a shaft seat 32, a first screw 33, and a second screw 34. The base plate 31 has a plurality of protruding ribs 35, a heel plate portion 36, and a locking hole portion 37 disposed between the plurality of protruding ribs 35 and the heel plate portion 36. The heel plate portion 36 is disposed at the rear end of the base plate 31. The plurality of protruding ribs 35 and the heel plate portion 36 both protrude from the surface of the base plate 31, and the plurality of protruding ribs 35 are parallel to each other.

[0043] Please see Figure 2 , Figure 4 , Figure 7 Figure 8 and Figure 9 As shown, in the first preferred embodiment, the bearing seat 32 has a fixing portion 321 and a pivot portion 322 laterally connected to the fixing portion 321, such that the side ends of the bearing seat 32 together form an L-shaped cross section. The fixing portion 321 has two first screw holes 323 and two second screw holes 324. Each first screw hole 323 provides for the insertion of a first screw 33 and each second screw hole 324 provides for the insertion of a second screw 34. The pivot portion 322 has a shaft hole 325, which is disposed above the two second screw holes 324 and communicates with the two second screw holes 324. The screw hole 324 is perpendicular to the shaft hole 325. The two first screw holes 323 are aligned with the locking hole portion 37 of the base plate 31, and the first screw 33 is sequentially inserted into the locking hole portion 37 and the first screw hole 323 of the base plate 31, so that the shaft seat 32 is assembled to the base plate 31, and the shaft seat 32 and the base plate 31 are locked and fixed by the first screw 33. Thus, the shaft seat 32 is fixed to the rear end of the base plate 31. However, there is no limitation on the structural state of the first screw 33 and the second screw 34. The first screw 33 can be a countersunk screw, and the second screw 34 can be a stop screw.

[0044] Please see Figure 2 , Figure 7 , Figure 8 and Figure 9As shown, in the first preferred embodiment, the shaft 4 is inserted into the shaft hole 325 of the bearing seat 32, so that the two opposite ends of the shaft 4 protrude from the bearing seat 32 respectively. The shaft 4 then sequentially forms a left protrusion 41, a central portion 42, and a right protrusion 43, with the central portion 42 positioned between the left protrusion 41 and the right protrusion 43. The left protrusion 41, the central portion 42, and the right protrusion 43 are all cylindrical. The left protrusion 41 has a straight... The diameter of the right protrusion 43 is the same as the diameter of the left protrusion 41, and the diameter of the central portion 42 is smaller than the diameter of the central portion 42. The second screw 34 will sequentially enter the second screw hole 324 and the shaft hole 325 until one end of the second screw 34 contacts the central portion 42 of the shaft 4 and stops, so that the shaft 4 and the shaft seat 32 are fixed and positioned by the second screw 34, and the shaft 4 can be fixed by the second screw 34 and cannot rotate relative to the shaft seat 32.

[0045] See Figure 2 , Figure 3 , Figure 5 , Figure 7 , Figure 8 and Figure 9 As shown, in the first preferred embodiment, the bearing 5 has a circular hole 51 inside, and the two bearings 5 ​​are respectively installed on the left protrusion 41 and the right protrusion 43 of the shaft member 4, such that the circular hole 51 of the bearing 5 is arranged around the outer periphery of the left protrusion 41 and the circular hole 51 of the other bearing 5 is arranged around the outer periphery of the right protrusion 43, so that there is a gap between the bearing 5 and the shaft member 4.

[0046] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in the first preferred embodiment, the foot pedal 6 has a foot pedal 61 and a cover 62 located below the foot pedal 61. The foot pedal 61 has a connecting portion 611, a through hole 612, a groove 613, a left recess 614, and a right recess 615. The connecting portion 611 and the through hole 612 are respectively disposed on opposite sides of the foot pedal 61, such that the connecting portion 611 is disposed at the top of the foot pedal 61 to connect with the transmission member 25, and the through hole 612, the groove 613, the left recess 614, and the right recess 615 are also disposed on opposite sides of the foot pedal 61. The right recess 615 is provided at the bottom end of the foot pedal 61, and the cover 62 includes two cover bodies 63 and two countersunk screws 64. Furthermore, each cover body 63 includes a clamping part 631, a positioning part 632, and an opening 633 disposed between the clamping part 631 and the positioning part 632. An inner contour 634 of the opening 633 can mate with an outer contour 641 of the countersunk screw 64. In this embodiment, the clamping part 631 has a recess 65 adjacent to the shaft hole 325 and a flange 66 adjacent to the recess 65. The recess 65 has… There is a first semicircular groove 651 and a second semicircular groove 652 with a radius smaller than that of the first semicircular groove 651. The second semicircular groove 652 is disposed between the first semicircular groove 651 and the flange 66. The first semicircular groove 651 provides a housing for the bearing 5. The second semicircular groove 652 accommodates one of the left protrusion 41 or the right protrusion 43. However, the left recess 614 can cooperate with the recess 65 and the flange 66 to form a left side space 7, and the right recess 615 can cooperate with the recess 65 and the flange 66 to form a right side space 8, so that... The left space 7 and the right space 8 are formed between the foot pedal 61 and the cover 62. In addition, the clamping part 631 is aligned with the shaft hole 325, so that the flange 66 can cover the shaft hole 325, so that the outer periphery of one of the two bearings 5 ​​can contact the first semi-circular groove 651 and the left recess 614, and the outer periphery of the other of the two bearings 5 ​​can contact the first semi-circular groove 651 and the right recess 615. Thus, one of the two bearings 5 ​​is clamped in the left space 7 and the other of the two bearings 5 ​​is clamped in the right space 8.

[0047] Please see Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, in the first preferred embodiment, the positioning part 632 and the clamping part 631 are located on opposite sides of the opening part 633, and the positioning part 632 is a protrusion 635. The protrusion 635 is inserted into the groove part 613 of the pedal part 61, so that the two flanges 66 can respectively contact the left recess 614 and the right recess 615 of the pedal part 61. The countersunk screws 64 are sequentially inserted into the opening part 633 of the cover 63 and the through part 612 of the pedal part 61, so that the cover 63 can be detachably connected to the pedal part. The pedal 61 and the two covers 63 can be fixed to opposite sides of the pedal 61 by the two countersunk screws 64, so that the two covers 63 can be spaced apart and mirrored on the left and right sides of the pedal 61. In this way, the covers 63 can be quickly and accurately locked into a set position under the pedal 61 by the protrusion 635 of the positioning part 632 and the flange 66 of the clamping part 631. In this way, the pedal 61 can be stably approached or moved away from the base plate 31 by the two bearings 5, which can reduce the chance of shaking when the pedal mechanism 1 is operated.

[0048] Please see Figure 10 and Figure 11 As shown, in the second preferred embodiment, the difference from the first preferred embodiment lies in the structural form of the shaft 4. The structural forms of the support base 3, the two bearings 5, and the foot pedal 6 are the same as in the first preferred embodiment. Therefore, in this embodiment, the structural forms of the support base 3, the two bearings 5, and the foot pedal 6 will not be described again.

[0049] Please continue reading. Figure 6 and Figure 7As shown, in the second preferred embodiment, the shaft 4 has a left protrusion 41, a right protrusion 43, and a central portion 42 disposed between the left protrusion 41 and the right protrusion 43. Both the left protrusion 41 and the right protrusion 43 are cylindrical, while the central portion 42 is a polygonal column 45. The second screw 34 sequentially enters the second screw hole 324 and the shaft hole 325 until the end of the second screw 34 contacts the central portion 42 of the shaft 4, thereby pressing against the polygonal column 45. One of the planes 46 allows the end of the second screw 34 to continuously contact the plane 46, and the shaft 4 cannot rotate relative to the bearing seat 32. When the shaft 4 passes through the shaft hole 325 of the bearing seat 32, a portion of the central portion 42 will contact the inner circumference of the shaft hole 325, and the remaining portion of the central portion 42 will create a gap 47 with the inner circumference of the shaft hole 325, so that the shaft 4 and the bearing seat 32 are locked and positioned by the second screw 34. Thus, the shaft 4 can be fixed by the second screw 34 and cannot rotate relative to the bearing seat 32.

[0050] Please see Figure 12 , Figure 13 and Figure 14As shown, in the third preferred embodiment, the difference from the first preferred embodiment lies in the structural features of the support base 3 and the foot pedal 6. The structural features of the shaft 4 and the two bearings 5 ​​are the same as in the first preferred embodiment. Therefore, in this embodiment, the structural features of the shaft 4 and the two bearings 5 ​​will not be described again. In the third preferred embodiment, the support base 3 has a base plate 31 and a pressure cover 62 located at the rear end of the base plate 31. The base plate 31 has the plurality of protruding ribs 35, the heel plate portion 36, and a component disposed between the plurality of protruding ribs 35 and the heel plate portion 36. The locking hole 37 is between the two parts, and the cover 62 includes two cover bodies 63 and two countersunk screws 64. The cover body 63 has the clamping part 631 and the opening part 633. The clamping part 631 has a recess 65 adjacent to the shaft hole 325 and a flange 66 adjacent to the recess 65. The recess 65 has a first semi-circular groove 651 and a second semi-circular groove 652 with a radius smaller than the first semi-circular groove 651. The second semi-circular groove 652 is disposed between the first semi-circular groove 651 and the flange 66. The first semi-circular groove 651 provides a place for the bearing 5. The second semi-circular groove 652 accommodates either the left protrusion 41 or the right protrusion 43 of the bearing 5. However, the left recess 614 cooperates with the recess 65 and the flange 66 to form the left side space 7, and the right recess 615 cooperates with the recess 65 and the flange 66 to form the right side space 8, thus forming the left side space 7 and the right side space 8 between the base plate 31 and the cover member 62. Furthermore, the clamping part 631 is aligned with the shaft hole 325, allowing the flange 66 to cover the shaft hole 325, thus allowing the two bearings 5 ​​to... One of the bearings 5 ​​has its outer periphery in contact with the first semicircular groove 651 and the left recess 614, and the other bearing 5 has its outer periphery in contact with the first semicircular groove 651 and the right recess 615. Thus, one of the bearings 5 ​​is clamped in the left space 7 and the other bearing 5 is clamped in the right space 8. The two countersunk screws 64 are sequentially inserted into the opening 633 and the base plate 31, so that the cover 63 can be detachably connected to the base plate 31, and the two covers 63 can be fixed to opposite sides of the base plate 31 by the two countersunk screws 64 respectively.

[0051] Please continue reading. Figure 12 , Figure 13 and Figure 14As shown, in the third preferred embodiment, the foot pedal 6 has a foot pedal 61, a bearing 32, a first screw 33, and a second screw 34. The foot pedal 61 has a connecting portion 611, a through hole 612, a left recess 614, and a right recess 615. The left recess 614 and the right recess 615 are both located at the bottom end of the foot pedal 61. The bearing 32 has a fixing portion 321 and a pivot portion 322 laterally connected to the fixing portion 321. The fixing portion 321 has two first screw holes 323 and two second screw holes 324. Each first screw hole 323 provides for the insertion of the first screw 33, and each second screw hole 324 provides for... The second screw 34 is inserted, and the pivot portion 322 has the shaft hole 325. The shaft hole 325 is disposed above the two second screw holes 324. The shaft hole 325 communicates with the two second screw holes 324, and the second screw holes 324 are perpendicular to the shaft hole 325. The two first screw holes 323 are aligned with the through hole portion 612 of the pedal component 61, and the first screw 33 is sequentially inserted into the through hole portion 612 and the first screw hole 323 of the pedal component 61, so that the bearing seat 32 is assembled to the pedal component 61, and the bearing seat 32 and the pedal component 61 are locked and fixed by the first screw 33, thereby fixing the bearing seat 32 to the rear end of the pedal component 61.

Claims

1. A foot pedal mechanism for a musical instrument drum, characterized in that, include: A support base has a base plate and a bearing seat located at the rear end of the base plate, the bearing seat having a shaft hole; A shaft member is disposed in the shaft hole, such that both ends of the shaft member protrude from the shaft seat to sequentially form a left convex portion, a central portion and a right convex portion; Two bearings are respectively installed on the left convex portion and the right convex portion of the shaft member; as well as A foot pedal has a foot pedal and a cover located below the foot pedal. A left space and a right space are formed between the foot pedal and the cover. The cover is detachably connected to the foot pedal, such that one of the two bearings is clamped in the left space and the other of the two bearings is clamped in the right space.

2. The foot pedal mechanism of the musical instrument drum according to claim 1, characterized in that, The bearing seat is fixed to the base plate by a first screw, and the bearing seat is positioned to the shaft by a second screw.

3. The foot pedal mechanism of the musical instrument drum according to claim 2, characterized in that, The bearing seat has a first screw hole that engages with the first screw and a second screw hole that engages with the second screw, and the second screw hole communicates with the shaft hole, so that the shaft can be fixed by the second screw and cannot rotate relative to the bearing seat.

4. The foot pedal mechanism of the musical instrument drum according to claim 2, characterized in that, The central part of the shaft is a polygonal column, and the left convex part and the right convex part are both cylinders. The second screw will enter the shaft hole to press against one of the planes of the polygonal column.

5. The foot pedal mechanism of the musical instrument drum according to claim 1, characterized in that, The pressure cap includes two spaced and mirror-arranged caps and two countersunk screws, such that the two caps are fixed to opposite sides of the foot pedal by the two countersunk screws respectively.

6. The foot pedal mechanism of the musical instrument drum according to claim 5, characterized in that, The cover includes an opening portion that mates with the countersunk screw and a clamping portion that aligns with the shaft hole. The clamping portion has a recess adjacent to the shaft hole and a flange that covers the shaft hole.

7. The foot pedal mechanism of the musical instrument drum according to claim 6, characterized in that, The cover also includes a positioning part, such that the positioning part and the clamping part are located on opposite sides of the opening. The positioning part is a protrusion that is inserted into the pedal, so that the cover can be quickly and accurately locked at a set position under the pedal through the protrusion and the flange.

8. The foot pedal mechanism of the musical instrument drum according to claim 6, characterized in that, The recess has a first semicircular groove and a second semicircular groove with a radius smaller than the first semicircular groove. The first semicircular groove contacts the bearing, and the second semicircular groove accommodates one of the left convex portion or the right convex portion.

9. The foot pedal mechanism of the musical instrument drum according to claim 6, characterized in that, The bottom of the foot pedal is provided with a left recess and a right recess. The left recess, together with the recess and the flange, forms the left space, and the right recess, together with the recess and the flange, forms the right space.

10. A foot pedal mechanism for a musical instrument drum, characterized in that, include: A foot pedal has a foot pedal and a bearing located below the foot pedal, the bearing having a shaft hole; A shaft member is disposed in the shaft hole, such that both ends of the shaft member protrude from the shaft seat to sequentially form a left convex portion, a central portion and a right convex portion; Two bearings are respectively mounted on the left and right protrusions of the shaft; and A support base has a base plate and a cover located at the rear end of the base plate. A left space and a right space are formed between the base plate and the cover. The cover is detachably connected to the foot pedal, such that one of the two bearings is clamped in the left space and the other of the two bearings is clamped in the right space.

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