Patent Application
20110146475
1. Field of the Invention
The present invention relates to a pedal, and more particularly to a musical instrument pedal that is applied to percussion instruments and quickly varies an elevation angle of a pedal plate thereof.
2. Description of Related Art
Percussion instruments such as crash cymbals, tom-toms, snare drums and bass drums are commonly used in performances. For example, a bass drum is set under the ground near a player's feet and a drum pedal is connected to the bass drum and has a beater selectively driven by the player to strike the bass drum to play music.
A conventional drum pedal comprises a base, two posts, a pedal plate, two shafts, a crossbeam, two beaters, a chain and two positioning devices. The posts are mounted uprightly on the base. The pedal plate is mounted on the base between the posts and has a rear end mounted pivotally on the base and a fore end lifted up. The shafts are transversely and rotatably mounted respectively on the posts. The crossbeam is mounted securely between and reinforces the posts. The beaters are pivotally mounted respectively on the shafts and each beater has a striking head capable of striking a bass drum. The chain has two ends, one end is mounted securely on one shaft and the other end is mounted on the fore end of the pedal plate so that pivoting the pedal plate drives one beater to strike. The positioning devices are mounted respectively on the posts and are connected respectively to the shafts and provide resilient forces to recover the shafts to a specific angle relative to the base when no external forces are applied to the shafts.
However, a predetermined elevation angle of the pedal plate is invariable and may not be suitable for different users with different stepping habits. For example, a user usually used to a high elevation angle of the pedal plate easily steps the pedal plate with a standard elevation angle over deeply to inadvertently make an over heavy strike on the bass drum. Alternatively, a user used to a low elevation angle of the pedal plate likely steps the pedal plate with the standard elevation angle over shallowly to accidentally make over light strike.
To overcome the shortcomings, the present invention provides a musical instrument pedal to mitigate or obviate the aforementioned problems.
The main objective of the invention is to provide a musical instrument pedal that is applied to percussion instruments and quickly varies an elevation angle of a pedal plate thereof.
A musical instrument pedal in accordance with the present invention has a base, two supporting posts, a pedal plate, a shaft, an elevation-angle-adjusting assembly, a chain assembly and two beaters. The pedal plate is mounted pivotally on the base. The shaft is mounted rotatably between the supporting posts. The elevation-angle-adjusting assembly is mounted on the shaft and selectively changes an angle thereof relative to the shaft. The chain assembly connects the pedal plate to the shaft. The beaters are mounted on the shaft. The elevation-angle-adjusting assembly allows users to quickly change an elevation angle of the pedal plate.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The base (10) is flat.
The supporting posts (30) are mounted uprightly on the base (10).
The pedal plate (20) is mounted on the base (10) between the supporting posts (30) and has a rear end (21) and a fore end (22). The rear end (21) is mounted pivotally on the base (10). The fore end (22) is defined opposite to the rear end (21) and is lifted over the base (10).
The shaft (40) is mounted rotatably on and between the supporting rods and has at least one friction ring (41). The at least one friction ring (41) is mounted securely around the shaft (40). Each of the at least one friction ring (41) may have an outer surface and a friction texture formed on the outer surface to increase the friction between the at least one friction ring (41) and a clamping element clamping the at least one friction ring (41).
With further reference to
The lower clamping jaw (51) may have a connecting end, a free end, a notch (500) and a mounting hole (511). The free end is defined opposite to the connecting end. The notch (500) is defined in the lower clamping jaw (51) and detachably engages the at least one friction mount (41) of the shaft (40). The mounting hole (511) is defined through the lower clamping jaw (51) near the free end.
The upper clamping jaw (52) is connected to and cooperates with the lower clamping jaw (51) to detachably clamp the at least one friction mount (41) of the shaft (40) and may have a connecting end, a free end, a notch (500) and a fastening hole (521). The connecting end is connected pivotally to the connecting end of the lower clamping jaw (51). The free end is defined opposite to the connecting end. The notch (500) is defined in the upper clamping jaw (52) and detachably engages the at least one friction mount (41) of the shaft (40). The fastening hole (521) is defined through the upper clamping jaw (52) near the free end.
The pad (53) is mounted detachably on the upper clamping jaw (52) and may have an outer convex surface, a curved guide slot (536), a threaded hole (531) and a screwing hole (535). The curved guide slot (536) is defined in the outer convex surface. The threaded hole (531) is defined through the pad (53). The screwing hole (535) is defined through the pad (53).
The adjusting bolt (54) presses against the lower clamping jaw (51), is mounted through the mounting hole (511) of the lower clamping jaw (51) and the fastening hole (521) of the upper clamping jaw (52) and is screwed detachably in the threaded hole (531). Rotating the adjusting bolt (54) selectively tightens or loosens the elevation-angle-adjusting assembly (50) so that the angle of the elevation-angle-adjusting assembly (50) relative to the shaft (40) may be changed when loosened. Furthermore, the adjusting bolt (54) may be rotated through a hand tool such as a wrench.
The chain assembly (60) is connected to the fore end (22) of the pedal plate (20) and the elevation-angle-adjusting assembly (50) and has a fastener (61) and a chain (62) and may further have a fastening bolt (63).
The fastener (61) is mounted detachably on the pad (53) and may have a mounting bore (611) defined through the fastener (61).
The chain (62) may engage the curved guide slot (536) of the pad (53) to prevent inadvertently fall from the pad (53). The chain (42) has two ends. One end is mounted on the fastener (61) and the other end is mounted on the fore end (22) of the pedal plate (20). Therefore, stepping on the pedal plate (20) pulls the chain (42) and rotates the first shaft (40). Furthermore, The pad (53) further increases a circumference of the shaft (10) and thus magnifies length variation of the chain (42) when the user steps the pedal plate (20).
The fastening bolt (63) is mounted through the mounting bore (611) of the fastener (61) and is screwed detachably in the screwing hole (535) of the pad (53). Furthermore, the fastening bolt (63) may be rotated through a hand tool such as a wrench.
The beaters (70) are transversely mounted on the shaft (40). Each beater (70) may have a distal end and a striking head (71). The striking head (71) is mounted on the distal end and may strike a percussion instrument such as a bass drum.
Each of the at least one positioning assembly (80) is mounted on one supporting post (30), is connected to the shaft (40) to recover a rotational position of the shaft (40) relative to the supporting posts (30) and has a post mount, a sleeve and a spring.
The post mount is mounted securely on the supporting post (30).
The sleeve is mounted securely around the shaft (40).
The spring is connected between the post mount and sleeve (81) to provide resilient force so that the shaft (40) and the elevation-angle-adjusting assembly (50) rotates back to a same rotational position relative to the supporting posts (30) when no external force is applied to the pedal plate (20).
With further reference to
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
