CN113299254B - Steel cable driving type wooden case drum hammer mechanism - Google Patents

Abstract

A cable-driven wooden box drum beating mechanism, which includes a stand with a long guide groove, a transmission shaft rotatably installed on the stand, and a shaft installed on the stand. The drumstick, a steel cable transmission assembly, a return elastic member and a steel cable. The steel cable can be driven to drive the transmission shaft and the drumstick to rotate through the steel cable transmission assembly. The return spring can drive the transmission shaft and the drum. Mallet is reversed to reset. In the process of driving the drumstick to swing forward and backward, the hammer mechanism drives the steel cable to move linearly, so it can reduce or even prevent the steel cable from breaking due to repeated bending and friction. Furthermore, due to the reduced friction, in addition to preventing noise and affecting the sound of the drum, the swing arm can also swing back and forth smoothly, which is beneficial to the drumstick for the next strike.

Description

Steel cable driven wooden cajon beating mechanism

Technical field

The present invention relates to a hammer mechanism, in particular to a hammer mechanism driven by a steel cable for striking wooden cajons.

Background technique

The cajon is a box-shaped wooden percussion instrument. When playing, in addition to directly clapping with hands to produce sound, a foot-operated percussion device can also be used to drive the drumsticks to strike and produce sound. The aforementioned foot-operated percussion device mainly includes a pedal mechanism and a hammer mechanism. A pedal of the pedal mechanism and a drumstick of the hammer mechanism can be connected by a connecting rod group or a steel cable, allowing the player to By stepping on the pedal, the drumstick is driven to swing, thereby striking the cajon.

As shown in FIG. 8 , the prior art hammer mechanism for striking wooden cajons includes a stand 81 , a transmission shaft 82 , a drumstick 83 , a swing arm 84 and a steel cable 85 . A protruding positioning post 811 is provided on the side of the stand 81 . The transmission shaft 82 is rotatably transversely disposed on the top of the stand 81 . The drumstick 83 and the swing arm 84 are fixed on the transmission shaft 82 , and the swing arm 84 and the positioning post 811 are located on the same side of the stand 81, and a tension spring (not shown in the figure) is provided on the side of the stand 81, and the two ends of the tension spring are connected respectively. Between the stand 81 and the transmission shaft 82, the tension spring can drive the transmission shaft 82 to reverse and reset after the transmission shaft 82 rotates. The steel cable 85 is covered with a sleeve 86. One end of the sleeve 86 is fixed to the positioning post 811, and the other end extends to connect to the pedal mechanism. The steel cable 85 protrudes from the sleeve 86, and Penetrating the positioning post 811 and extending toward the swing arm 84 , the steel cable 85 is wound around at least one fixing part 87 provided on the rocker arm 84 and clamped between the rocker arm 84 and the fixing part 87 between.

As shown in FIGS. 8 and 9 , when a player steps on and presses down the pedal of the pedal mechanism, the rocker arm 84 and the transmission shaft 82 are pulled to rotate through the steel cable 85 , thereby driving the drumstick 83 toward the pedal mechanism. Swing forward to strike the cajon; when the player releases the pedal, the tension spring will drive the transmission shaft 82 to rotate in the reverse direction, causing the drumstick 83 and the rocker arm 84 to reversely reset.

However, since the steel cable 85 is directly connected to the swing arm 84, in the process of driving the drumstick 83 to swing forward and backward, the steel cable 85 will also swing sideways and repeatedly change the inclination along with the swing arm 84. angle, thereby constantly rubbing against the positioning post 811 and the fixing part 87, and the steel cable 85 will be repeatedly bent at the connection with the fixing part 87, so that after a period of use, the steel cable 85 will be bent due to breaks and must be replaced. Furthermore, in the process of the steel cable 85 constantly rubbing against the positioning post 811 and the fixing member 87, in addition to generating noise and affecting the sound of the drum, it will also cause the rocker arm 84 and the drumstick 83 to be unable to rotate smoothly. Affects the combo effect when playing drums.

Contents of the invention

In view of the problems existing in the prior art mentioned above, the object of the present invention is to provide a steel cable-driven wooden box drum hammering mechanism that can prevent the steel cable from being repeatedly bent during the action of the hammering mechanism. , friction to reduce noise and avoid disconnection.

In order to achieve the above-mentioned object of the invention, the technical means adopted by the present invention is to make a cable-driven wooden box drum beating mechanism include:

A standing base, which has a vertical plate arranged vertically, and a long guide groove is provided on the vertical plate;

A transmission shaft, which is rotatably transversely installed on the vertical plate of the stand;

A drumstick, one end of which is fixed to the transmission shaft;

A steel cable transmission assembly is provided on the transmission shaft and includes a first rocker arm, a swing rocker arm and a sliding component. One end of the first rocker arm is fixed to the transmission shaft, and the swing rocker arm is in the shape of Curved arc shape, a first end of the swing rocker arm is pivotally connected to the first rocker arm, a second end of the swing rocker arm is provided with a sleeve portion, the position of the sleeve portion corresponds to the long shape of the stand The guide groove is provided with a through hole on the side wall of the sleeve part. One end of the sliding component is passed through and assembled in the sleeve part of the swing arm, and the other end of the sliding component protrudes from the stand. in long guide groove;

A reset elastic member, one end of which is connected to the stand and the other end is connected to the transmission shaft;

A steel cable has one end passing through the hole in the sleeve part of the swing arm and is connected to the sliding component.

The aforementioned steel cable-driven wooden box drum beating mechanism:

The stand further has a laterally protruding positioning post, which is located in the extending direction of the long axis of the elongated guide groove;

The perforation of the sleeve part of the swing arm faces the positioning post;

The steel cable is covered with a casing, one end of the casing is in contact with the positioning column, the steel cable is passed through the casing, one end of the steel cable protrudes from the casing and penetrates the positioning column And the through hole of the sleeve part of the swing rocker arm is connected to the sliding component.

The aforementioned return elastic member is connected to the transmission shaft through a second rocker arm. One end of the second rocker arm is fixed to the transmission shaft and the other end is pivotally connected to the end of the return elastic member.

The aforementioned return elastic member is a tension spring.

The aforementioned sliding assembly includes a rotating bearing and a connecting block. The rotating bearing is located outside one end of the sleeve portion of the swing arm and is located in the elongated guide groove of the stand. A first fixing member penetrates the The rotation bearing is assembled to the sleeve part. The connecting block is provided in the sleeve part of the swing arm and is limited between the first fixing part and a second fixing part. The second fixing part is assembled Connected to the sleeve part, the aforementioned steel cable passes through the through hole of the sleeve part of the swing arm and is connected to the connecting block of the sliding assembly.

The advantage of the steel cable-driven wooden box drum beating mechanism of the present invention is that when the hammer hammering mechanism drives the drumstick to swing forward and backward, it drives the steel cable to move linearly along the extension direction of the elongated guide groove. , so it can reduce or even prevent the steel rope from breaking due to repeated bending and friction. Furthermore, due to the reduced friction, in addition to preventing noise and affecting the sound of the drum, the swing arm can also swing back and forth smoothly, which is beneficial to the drumstick for the next strike, that is, it can be more precise. Make continuous strokes smoothly.

Description of the drawings

Figure 1 is a schematic three-dimensional view of the present invention in use.

Figure 2 is a three-dimensional appearance view of the present invention.

Figure 3 is another three-dimensional appearance view of the present invention.

Figure 4 is an exploded perspective view of the swing arm and sliding assembly of the present invention.

Figure 5 is a side view of the present invention.

Figure 6 is a side view of the present invention.

Figure 7 is a partial enlarged side view of the present invention.

Figure 8 is a schematic side view of a prior art hammer mechanism.

Figure 9 is a schematic side view of the hammer mechanism in the prior art.

Detailed ways

The technical means adopted by the present invention to achieve the intended invention purpose will be further described below with reference to the accompanying drawings and preferred embodiments of the present invention.

Referring to FIG. 1 , it is a schematic diagram of using a percussion device to strike a wooden cajon 70 . The percussion device includes a pedal mechanism 60 and a hammer mechanism 1 of the present invention. The pedal mechanism 60 has a pedal 61 . Referring further to FIGS. 2 and 3 , the hammer mechanism 1 has a stand 10 , a transmission shaft 21 , a drumstick 22 , a cable transmission assembly 30 , a return elastic member 41 and a steel cable 51 .

Referring to Figures 2 and 7, the stand 10 has a vertically arranged vertical plate 11. The vertical plate 11 is provided with a long guide groove 12 and a transversely protruding positioning post 13. The long guide groove 12 12 extends obliquely, and the positioning post 13 is located in the long axis extension direction of the elongated guide groove 12 . In a specific embodiment of the present invention, the positioning post 13 is disposed adjacent to one end of the elongated guide groove 12 .

The transmission shaft 21 is rotatably transversely disposed on the vertical plate 11 of the stand 10 . One end of the drumstick 22 is fixedly connected to the transmission shaft 21. By rotating the transmission shaft 21 back and forth, the drumstick 22 can be driven to swing back and forth.

As shown in FIG. 3 , the cable transmission assembly 30 is provided on the transmission shaft 21 and includes a first rocker arm 31 , a swing rocker arm 32 and a sliding assembly 33 . One end of the first rocker arm 31 is fixed to the transmission shaft 21 . The swing arm 32 is in an arc shape, and has a first end and a second end located at opposite ends and a sleeve portion 321 . The first end of the swing arm 32 is pivotally connected to the sleeve portion 321 . The first rocker arm 31, the sleeve part 321 is provided at the second end of the swing rocker arm 32, and is positioned corresponding to the elongated guide groove 12 of the stand 10, and the side wall of the sleeve part 321 is provided with a through hole. 322, the through hole 322 faces the aforementioned positioning post 13. One end of the sliding component 33 is passed through and assembled in the sleeve portion 321 of the swing arm 32 , and the other end of the sliding component 33 protrudes into the elongated guide groove 12 of the stand 10 so that it can move along the length. The shaped guide groove 12 moves.

As shown in FIG. 3 , one end of the return elastic member 41 is connected to the stand 10 and the other end is connected to the transmission shaft 21 , so that when the transmission shaft 21 rotates and the return elastic member 41 is deformed by force, the return elastic member 41 is deformed. 41 can drive the transmission shaft 21 to reverse and reset.

In the specific embodiment of the present invention, the return elastic member 41 is connected to the transmission shaft 21 through a second rocker arm 42. One end of the second rocker arm 42 is fixedly connected to the transmission shaft 21, and the other end is pivotally connected to the transmission shaft 21. This resets the end of the elastic member 41 . More specifically, the return elastic member 41 is a tension spring.

In a specific embodiment of the present invention, the cable transmission assembly 30 and the return elastic member 41 are respectively provided on opposite sides of the upright plate 11 of the stand 10 . In addition, the cable transmission component 30 and the return elastic member 41 can also be disposed on the same side of the vertical plate 11 of the stand 10 as long as they do not affect each other's movements.

One end of the steel cable 51 passes through the through hole 322 of the sleeve portion 321 of the swing arm 32 and is connected to the sliding assembly 33 , and the other end is connected to the pedal 61 of the pedal mechanism 60 .

In order to obtain better use effect, the steel cable 51 is covered with a sleeve 52. One end of the sleeve 52 is in contact with the positioning column 13, and the other end is fixed to a bracket 62 of the pedal mechanism 60. The steel cable 51 is inserted into the casing 52 . One end of the steel cable 51 protrudes from the casing 52 , and passes through the positioning post 13 and the through hole 322 of the sleeve tube 321 of the swing arm 32 to be connected to the casing 52 . The other end of the sliding assembly 33 and the steel cable 51 protrudes from the sleeve 52 and is connected to the pedal 61 of the pedal mechanism 60 .

In the specific embodiment of the present invention, the aforementioned sliding component 33 includes a rotating bearing 331 and a connecting block 332. The rotating bearing 331 is disposed outside one end of the sleeve portion 321 of the swing arm 32 . A first fixing member 333 penetrates the rotating bearing 331 and is assembled to the sleeve portion 321 to fix the rotating bearing 331 . position, the rotation bearing 331 is disposed in the elongated guide groove 12 of the stand 10 and can move smoothly along the elongated guide groove 12 . The connecting block 332 is disposed in the sleeve portion 321 of the swing arm 32. One side of the connecting block 332 is provided with the aforementioned first fixing member 333, and the other side is provided with a third fixing member 333 that is also assembled to the sleeve portion 321. The two fixing parts 334 limit the connecting block 332 in the sleeve part 321 through the first fixing part 333 and the second fixing part 334. The aforementioned steel cable 51 penetrates the sleeve part 321 of the swing arm 32. The through hole 322 is connected to the connecting block 332 of the sliding component 33 .

As shown in FIGS. 5 and 6 , when the player steps on and depresses the pedal 61 , the sliding component 33 and the sleeve portion 321 of the swing arm 32 will be pulled along the The elongated guide groove 12 moves, so that the swing arm 32 drives the transmission shaft 21 and the drumstick 22 to swing forward to strike the wooden cajon 70; when the player releases the pedal 61, the return elastic member 41 Then the transmission shaft 21 will be driven to rotate in the opposite direction through the second rocker arm 42, so that the drumstick 22 will be reversely rotated and reset, and the sliding component 33 and the sleeve portion 321 of the swing rocker arm 32 will move along the elongated guide groove. 12Reverse movement.

Through the above design, the hammer hitting mechanism 1 of the steel cable-driven wooden cajon 70 of the present invention drives the steel cable 51 along the elongated guide groove 12 in the process of driving the drumstick 22 to swing forward and backward. The extending direction moves relative to the casing 52 and the positioning post 13 in a linear motion, so the breakage of the steel cable 51 due to repeated bending and friction can be reduced or even avoided. Furthermore, due to the reduced friction, in addition to preventing noise and affecting the sound of the drum, the swing arm 32 can also smoothly swing back and forth, which is beneficial to the drumstick 22 for the next strike, that is, Continuous tapping can be performed more smoothly.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above in preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art, Without departing from the scope of the technical solution of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims (6)

1. A kind of steel cable drive type wooden case drum hammer mechanism, it includes a stand, a drive shaft, a drum hammer, a steel cable drive assembly, a reset elastic member and a steel cable, wherein:

the vertical seat is provided with a vertical plate which is vertically arranged, and a long guide groove is arranged on the vertical plate;

the transmission rotating shaft is rotatably and transversely arranged on the vertical plate of the vertical seat in a penetrating way;

one end of the drumstick is fixedly connected with the transmission rotating shaft;

the steel rope transmission assembly is arranged on the transmission rotating shaft and comprises a first rocker arm, a swinging rocker arm and a sliding assembly, wherein one end of the first rocker arm is fixedly connected with the transmission rotating shaft, the swinging rocker arm is in an arc shape, a first end of the swinging rocker arm is pivoted with the first rocker arm, a sleeve part is arranged at a second end of the swinging rocker arm, the position of the sleeve part corresponds to the long guide groove of the vertical seat, a penetrating through hole is formed in the side wall of the sleeve part, one end of the sliding assembly penetrates through and is assembled in the sleeve part of the swinging rocker arm, and the other end of the sliding assembly protrudes into the long guide groove of the vertical seat;

one end of the reset elastic piece is connected with the vertical seat, and the other end is connected with the transmission rotating shaft;

one end of the steel cable penetrates through the perforation of the sleeve part of the swing rocker arm and is connected with the sliding component.

2. The wire rope driven wood chest drum hammer mechanism of claim 1, wherein:

the vertical seat is further provided with a positioning column which transversely protrudes, and the positioning column is positioned in the extending direction of the long shaft of the long guide groove;

the perforation of the sleeve part of the swing rocker arm faces the positioning column;

the steel cable is wrapped by a sleeve, one end of the sleeve is abutted against the positioning column, the steel cable penetrates through the sleeve, one end of the steel cable protrudes out of the sleeve, and the steel cable penetrates through the positioning column and the through hole of the sleeve part of the swinging rocker arm to be connected with the sliding component.

3. The wire rope driven wooden case drum hammer mechanism as claimed in claim 1, wherein the reset elastic member is connected to the driving shaft via a second rocker arm, one end of the second rocker arm is fixedly connected to the driving shaft, and the other end is pivotally connected to an end of the reset elastic member.

4. The wire rope driven wooden case drum hammer mechanism as claimed in claim 2, wherein the reset elastic member is connected to the driving shaft via a second rocker arm, one end of the second rocker arm is fixedly connected to the driving shaft, and the other end is pivotally connected to an end of the reset elastic member.

5. The wire rope driven wood chest drum hammer mechanism of any one of claims 1 to 4, wherein the return elastic member is an extension spring.

6. The wire rope driven wood box drum hammer mechanism as claimed in any one of claims 1 to 4, wherein the sliding assembly comprises a rotary bearing and a connecting block, the rotary bearing is disposed at the outer side of one end of the sleeve portion of the swing arm and is located in the elongated guide slot of the stand, a first fixing member penetrates the rotary bearing to be assembled to the sleeve portion, the connecting block is disposed in the sleeve portion of the swing arm and is limited between the first fixing member and a second fixing member, the second fixing member is assembled to the sleeve portion, and the wire rope penetrates the through hole of the sleeve portion of the swing arm to be connected to the connecting block of the sliding assembly.