Drum pedal and drum pedal unit

A drum pedal has a base, a pivoting assembly, a rotating element, a beater holder assembly, a chain assembly, and a foot board. The pivoting assembly is mounted in the base. The rotating element, the beater holder assembly and the chain assembly are mounted in the pivoting assembly. The foot board is mounted between the chain assembly and the base. The base has a resilient element mounted concentric with a shaft of the pivoting assembly. A rotating element receives the resilient element. A torque of the resilient element is evenly matched with a swing caused by the beater holder and the chain assembly. Therefore, the beater holder and the chain assembly return to the original position immediately after the swing. Two drum pedals are manipulated to play respectively, and are connected by a coupling assembly to compose a drum pedal unit.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a drum pedal and a drum pedal unit, and more particularly to a return mechanism of the drum pedal and the drum pedal unit.

2. Description of the Related Art

A drum pedal is a musical instrument. A user tramples on the drum pedal to beat a drum with his or her foot. When a drummer plays a tom-tom drum, a snare drum and a cymbal with his or her hands, the drummer still plays a bass drum at the same time with the drum pedal.

With reference toFIG. 8, a conventional drum pedal80has a main base81, two brackets82, two assembling parts83, a pivot84, a holding base85, a beater holder86, an attaching element87, a tension spring88and a foot board89. The brackets82protrude from the main base81and are spaced apart at an interval. One of the two brackets82has a mounting part821. The assembling part83is formed in one of two ends of the bracket82and is located away from the main base81. The assembling part83has a hole defined in a center of the assembling part83. The pivot84is installed through and stands out of the hole of the assembling part83. The holding base85is mounted on an outer wall of the pivot84and has a chain851connected to the holding base85. The beater holder86is mounted on the outer wall of the pivot84and has a beater861mounted in the beater holder86. The attaching element87is mounted in one of two ends of the pivot84. The attaching element87is mounted in one of two ends of the tension spring88. The tension spring88has an adjusting element881, and the other end of the tension spring88is connected to the mounting part821of the bracket82by the adjusting element881. One of two ends of the foot board89is connected to the other end of the chain851, and the other end of the foot board89is mounted rotatably in the main base81.

With referenceFIG. 9, when a drummer tramples on the foot board89, the chain851is driven to rotate the pivot84. Thereby, the beater holder86rotates with the pivot84, and the beater861beats a bass drum. The rotating pivot84pivots the attaching element87to stretch the tension spring88, and the tension spring88stops a rotation of the pivot84. Hence, the pivot84and the beater861return to an original position for a next trampling from the drummer. As the attaching element87rotates with the pivot84, the tension spring88does a pendulum motion affected by the attaching element87. However, a direction of the pendulum motion violates a principle of linear movement of the tension spring88. Then, the pivot84and the beater861cannot return to the original position in a minimum time. So the pendulum motion of the tension spring88is a low efficiency motion. The user's trampling cannot match up the returning of the beater861in tempo. Then the user is laborious in operation and wastes the trampling forces, and a touching feel between the foot and the foot board89is in-sensitive. As the user tramples on the foot board89, the trampling force cannot be transmitted directly and completely to the beater861for beating the bass drum.

SUMMARY OF THE INVENTION

An objective of the present invention is to provide a drum pedal and a drum pedal unit. A user operates the drum pedal easily and tramples on a pedal with keen sensitivity. A trampling force can be transmitted directly and completely to the beater by the foot board. The user manipulates two beaters of two drum pedals to beat the drum respectively.

To achieve the foregoing objective, the drum pedal in accordance with the present invention comprises a base, a pivoting assembly, a rotating element, a beater holder assembly, a chain assembly, and a foot board. The base has a main plate, two brackets, and a mounting assembly. The brackets protrude from the main plate. One of the two brackets has an assembling part. The assembling part is formed on the bracket and is located away from the main plate. The mounting assembly is mounted on the other bracket and is located away from the main plate. The mounting assembly has a supporting part, a cap, an adjusting knob, an abutting element, and a resilient element. The supporting part has a recess defined in the supporting part and a guiding groove defined in the recess longitudinally. The cap covers the recess and is mounted in the supporting part. The cap has a slot defined through the cap longitudinally and a notch defined in the cap laterally. The adjusting knob is mounted inside the supporting part and the cap and has a mounting tube that is mounted through the supporting part and the cap. The mounting tube has an outer thread that is formed in an outer surface of the mounting tube. The abutting element is mounted inside the supporting part and the cap, is mounted around the mounting tube, and is capable of moving along the mounting tube. The mounting tube has a mounting hole, a guiding part, and a restricted element. The mounting hole receives the mounting tube and has an inner thread that is formed in an inner surface of the mounting hole and is engaged with the outer thread of the mounting tube. The guiding part protrudes from an outer surface of the abutting element, and is mounted slidably in the guiding groove. The restricted element is mounted in the abutting element, and extends slidably out of the slot. The resilient element is mounted inside the recess. One of two ends of the resilient element is mounted on the abutting element, and the other end of the resilient element extends out of the notch. The pivoting assembly is mounted between the assembling part and the mounting assembly. The rotating element, the beater holder assembly and the chain assembly are mounted on the pivoting assembly. The other end of the resilient element is mounted in the rotating element. One of two ends of the foot board is mounted in the chain assembly, and the other end of the foot board is mounted rotatably in the main plate.

DETAILED DESCRIPTION OF THE INVENTION

With reference toFIG. 1, a drum pedal in accordance with the present application has a base10, a pivoting assembly20, a rotating element30, a beater holder assembly40, a chain assembly50, and a foot board60.

With reference toFIGS. 1 and 2, the base10has a main plate11, two brackets12, and a mounting assembly13.

The brackets12protrude respectively from the main plate11and are spaced apart at an interval.

One of the two brackets12has an assembling part121. The assembling part121is formed on the bracket12and is located away from the main plate11. The assembling part121has a first accommodating part1211that is defined in the assembling part121.

The mounting assembly13is mounted on the other bracket12and is located away from the main plate11, as shown inFIG. 2.

With reference toFIGS. 2 and 3, the mounting assembly13has a supporting part131, a cap132, an adjusting knob133, an abutting element134and a resilient element135.

The supporting part131has a recess1311and a guiding groove1312.

The recess1311is defined in the supporting part131. The guiding groove1312is defined in the recess1311longitudinally.

The cap132covers the recess1311, is mounted in the supporting part131, and has a slot1321and a notch1322.

The slot1321is defined through the cap132longitudinally. The notch1322is defined in the cap132laterally.

The adjusting knob133is mounted in the supporting part131and the cap132, and has a mounting tube1331and a second accommodating part1332.

The mounting tube1331is hollow, is formed on and protrudes axially from the adjusting knob133, and is mounted through the supporting part131and the cap132. The mounting tube1331protrudes from one of two end surfaces of the adjusting knob133, and has an outer thread that is formed in an outer surface of the mounting tube1331.

The second accommodating part1332is defined in the other end surface of the adjusting knob133, and communicates with the mounting tube1331.

The abutting element134is mounted inside the supporting part131and the cap132, is mounted around the mounting tube1331, and is capable of moving along the mounting tube1331. The abutting element134has a mounting hole1341, a guiding part1342, an attaching hole1343, and a restricted element1344.

The mounting hole1341is defined in a center of the abutting element134, receives the mounting tube1331, and has an inner thread that is formed in an inner surface of the mounting hole1341and is engaged with the outer thread of the mounting tube1331.

The guiding part1342is mounted slidably in the guiding groove1312, and protrudes from an outer surface of the abutting element134.

The attaching hole1343is defined in the abutting element134.

The restricted element1344is mounted in the attaching hole1343, extends slidably out of the slot1321, and has a flange1345that is formed annularly on an outer surface of the restricted element1344. The flange1345abuts an outer surface of the cap132.

The resilient element135is mounted inside the recess1311. One of two ends of the resilient element135is mounted on the abutting element134, and the other end of the resilient element135extends out of the notch1322. Specifically, the resilient element135is a torsion spring.

With reference toFIGS. 2 to 4, the pivoting assembly20is mounted between the assembling part121and the mounting assembly13, and has a shaft21, a sleeve22, a first bearing23, a second bearing24, a third bearing25, a fourth bearing26, a fifth bearing27, and a retaining ring28.

The shaft21is mounted through the assembling part121and the mounting assembly13, and has an attaching part211and two connecting recesses210.

The attaching part211extends out of the assembling part121, and is formed in one of two ends of the shaft21.

The connecting recesses210are defined radially in an outer wall of the shaft21, and are spaced apart at an interval.

The sleeve22is mounted rotatably on the outer wall of the shaft21, and has two connecting holes221, two mounting grooves222, and an embossed part223.

The connecting holes221are radially defined in an outer surface of the sleeve22, and correspond to the connecting recesses210respectively.

The mounting grooves222are defined respectively in two end surfaces of the sleeve22.

The embossed part223is formed in the outer surface of the sleeve22.

The first bearing23is mounted inside the first accommodating part1211, and receives the attaching part211of the shaft21.

The second bearing24is mounted inside one of the two mounting grooves222, and receives the shaft21.

The third bearing25is mounted inside the other mounting groove222, and receives the shaft21.

The fourth bearing26is mounted between the supporting part131and the cap132, corresponds to the third bearing25axially, and receives the shaft21.

The fifth bearing27is mounted inside the second accommodating part1332, and receives the shaft21.

The retaining ring28receives the shaft21, is mounted between the third bearing25and the fourth bearing26, and abuts the third bearing25and the fourth bearing26respectively. Specifically, the above-mentioned bearings are mounted firmly on the shaft21by a C-ring271. For example, the fifth bearing27is abutted by the C-ring271that is mounted on the shaft21, as shown inFIGS. 2 and 3.

With reference toFIGS. 1, 2 and 4, the rotating element30is mounted on the outer surface of the sleeve22, receives the other end of the resilient element135, and has a through hole300, a clamping part31, and a combining element32.

The through hole300is defined through the rotating element30, and receives the sleeve22.

The clamping part31protrudes from the rotating element30.

The combining element32is mounted on the clamping part31, and abuts the other end of the resilient element135.

With reference toFIGS. 2 and 4, the beater holder assembly40is mounted on the outer surface of the sleeve22, and has a beater holder41and a beater42.

The beater holder41is mounted on the outer surface of the sleeve22, and has a first assembling hole410and a first rough surface411.

The first assembling hole410is defined axially through the beater holder41.

The first rough surface411is formed inside the first assembling hole410, and abuts the embossed part223.

The beater42is mounted in the beater holder41.

With reference toFIGS. 1, 2, and 4, the chain assembly50is mounted on the outer surface of the sleeve22, and has a holding base51and a chain52.

The holding base51is mounted on the outer surface of the sleeve22, and has a second assembling hole510and a second rough surface511.

The second assembling hole510is defined axially through the holding base51.

The second rough surface511is formed inside the second assembling hole510, and abuts the embossed part223.

One of two ends of the chain52is mounted in the holding base51.

The foot board60is an elongate plate. One of two ends of the foot board60is rotatably mounted on the main plate11, and the other end of the foot board60is mounted in the other end of the chain52.

With reference toFIG. 5, a drum pedal unit comprises two drum pedals of the present invention and a coupling assembly70.

With reference toFIGS. 6 and 7, one of the drum pedals has two connecting elements29and a minor sleeve43.

Each connecting element29is mounted in the connecting hole221′ of the sleeve22′ and the connecting recess210′ of the shaft21′, making the sleeve22′ mounted firmly in the shaft21′.

The attaching part211′ of the shaft21′ extends out of the adjusting knob133′.

The minor sleeve43is mounted firmly on the outer surface of the shaft21of the other drum pedal, and has multiple first fastening elements431that are mounted through the minor sleeve43and abut the shaft21.

The beater holder assembly40′ of the drum pedal that has the connecting elements29is mounted on an outer surface of the minor sleeve43.

With reference toFIGS. 5 and 7, the coupling assembly70connects the drum pedals, and has a connecting sleeve71, two sticks72, and two universal joints73.

The sticks72are mounted in two ends of the connecting sleeve71.

Each universal joint73is mounted in the stick72, and has an attaching recess731that is defined in the universal joint73. Specifically, the universal joints73are located at two ends of the coupling assembly70.

The attaching recess731receives the attaching part211,211′ of the shaft21,21′ of the drum pedal.

When a user tramples on the foot board60, the foot board60drives the holding base51and the chain52. Then, the holding base51drives the sleeve22to rotate relative to the shaft21, and the rotating element30and the beater holder41rotate at the same time. Because of a rotation of the beater holder41, the beater42beats a drum. The rotating element30twists the resilient element135. The resilient element135affected by the rotating element30provides a responsive torque. When an external driving force of the sleeve22is removed, the torque of the resilient element135drives the beater holder assembly40and the chain assembly50to return to the original position in a short time. The responsive torque of the resilient element135is evenly matched with the torque of the beater holder assembly40and the chain assembly50in a different direction. Therefore, the rotation of the sleeve22is stopped effectively. Then, the user tramples on the foot board60again easily and quickly.

The torque of the resilient element135is adjustable. When the user manipulates the adjusting knob133, the adjusting knob133drives the abutting element134to move towards or away from the resilient element135. Then, the abutting element134compresses or releases the resilient element135. Therefore, a spring constant of the resilient element135is adjusted. Thereby, a deformation of the resilient element135is changed. The responsive torque of the resilient element135is adjustable according to the user's requirement. Then, a damping of the resilient element135that stops a rotation is adjustable, and a touching feel between the user's foot and the foot board60is changed.

The guiding part1342of the abutting element134is mounted slidably in the guiding groove1312, and the restricted element1344extends slidably out of the slot1321. Therefore, the abutting element134moves axially and stably inside the supporting part131and the cap132.

The second bearing24and the third bearing25are mounted in both ends of the sleeve22respectively. The second bearing24is mounted firmly in the shaft21in an axial direction by a C-ring. The third bearing25is mounted firmly in the shaft21in an axial direction by the retaining ring28. Thereby, the sleeve22is mounted in the outer wall of the shaft21firmly in an axial direction.

When the user tramples on the foot board60of one drum pedal to drive the beater42by his or her right foot, the foot board60′ of the other drum pedal is trampled on by the user's left foot.

Because the sleeve22′ is mounted on the shaft21′ firmly by the connecting element29, as shown inFIG. 6, the chain assembly50′ drives the sleeve22′ and the shaft21′ to rotate simultaneously. Then the shaft21′ connects the shaft21to drive the beater42′ with the coupling assembly70. The shaft21is mounted through the sleeve22, and as shown inFIG. 2, the shaft21rotates relative to the sleeve22. Thus, the beater42and the beater42′ are driven to beat the drum respectively by the user's feet.