CN215376891U - Novel two chain coordinated type footboards of stepping on of jazz drum pucks - Google Patents
Novel two chain coordinated type footboards of stepping on of jazz drum pucks Download PDFInfo
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- CN215376891U CN215376891U CN202023218055.XU CN202023218055U CN215376891U CN 215376891 U CN215376891 U CN 215376891U CN 202023218055 U CN202023218055 U CN 202023218055U CN 215376891 U CN215376891 U CN 215376891U
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Abstract
The utility model discloses a novel jazz drum and pucking double-stepping chain linkage type pedal, which overcomes the defects of no strength, slow pedal rebound, non-permeability on the sound color of a beating drum surface and the like of the traditional chain type pedal by changing the relative motion of a hammer head and a tension spring, arranging a bearing in a hammer head rod seat and changing the direct connection of a chain and the pedal and adopting a bent rod for conversion connection, can move with more strength along with the foot, and enables the pedal to show excellent beating sound color when being stepped continuously and variably.
Description
Technical Field
The utility model relates to a jazz drum bottom drum pedal, in particular to a novel jazz drum bottom drum double-stepping chain linkage pedal.
Background
The design of the traditional double-treading chain type pedal of the traditional jazz drum bottom drum pedal has the following defects:
the pedal on the right side of the traditional pedal takes an upright post as a pedal main supporting structure, a main shaft transversely penetrates through a bearing at the upper end of the upright post, a chain wheel and a hammer head rod seat are sequentially fixed on the left side of the upright post, a tension spring sleeve is fixedly connected to the right side of the upright post, and a tension spring clamping arm and the like are arranged on the tension spring sleeve. The left tread hammer completes the same working principle through the connecting rod. The traditional chain type pedal rotates on a bearing by a main shaft, and is provided with a hammer head and a tension spring which do relative motion. When the pedal is stepped on, the pedal drives the chain to pull the chain wheel downwards and the hammer head rod seat fixed on the main shaft to move forwards clockwise, and the reverse tension spring sleeve pulls the tension spring ring backwards. And when the foot is released, the tension of the tension spring enables the upright post to move backwards anticlockwise. The disadvantages of such conventional chain pedals are: because the lower end of the chain is directly connected with the pedal, the upper end of the chain moves around the chain wheel, the movement of the chain wheel is a key factor of the movement of the chain and the pedal, and the connection enables a user to have a hollow feeling of stepping on a soft object when exerting force, and the pedal rebounds slowly. This may cause the user to involuntarily increase the strength of the foot, further causing excessive force from the foot-down. When the pedal is loosened, the chain drives the pedal to jack upwards, the pedal rebounds slowly and has small strength, and the pedal does not follow the foot when continuously and variably stepped and needs to adapt to the feeling of stepping and rebounding for a long time. The beating drum surface is soft and impermeable in tone.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a novel jazz drum and pucks double-stepping chain linkage type pedal, and overcomes the defects that the traditional chain type pedal has no strength, is slow in pedal rebound and not capable of following feet, and the sound of the drumhead is too soft and not transparent.
The technical problem to be solved by the utility model is realized by the following technical scheme:
the utility model provides a novel two chain coordinated type footboards of stepping on of jazz drum pucks, includes the bottom plate, with bottom plate fixed connection's right pedal and left pedal, right pedal includes: the right upright post and the left upright post are fixedly connected to the bottom plate, main shafts are arranged on the right upright post and the left upright post, and a right hammer head group and a left hammer head group are arranged on the main shafts;
the right hammer head group comprises: the hammer head rod seat is fixedly connected with the bearing end cover, and the hammer head is fixedly connected to the hammer head rod; the hammer head rod is fixedly connected in the through hole above the hammer head rod seat;
the main shaft is provided with a tension spring shaft, and a tension spring ring provided with a bearing is fixedly connected with a tension spring clamp through the tension spring shaft; the tension spring ring is connected with a tension spring and a tension spring threaded rod in a hanging manner; the tension spring threaded rod is fixedly connected to the mounting seat protruding from the hammer head rod seat through a screw hole to be connected into a whole, so that the hammer head and the tension spring form linkage to move in the same direction;
the tension spring clamp is fixedly connected to the tension spring shaft sleeve through a screw; the angle of the tension spring clamp, namely the angle of the hammer head, is adjusted through the tightness of the screw; the tension spring sleeve is fixedly connected to the main shaft;
bearings are arranged on the left side of the bearing end cover and the right side of the hammer head rod seat, so that when the right hammer head group is connected with the main shaft, the bearing end cover and the hammer head rod seat can drive correspondingly connected parts to form linkage;
the left hammer head group comprises: the hammer head rod seat is fixedly connected with the left double-stepping adapter end cover and is fixedly connected to the hammer head rod;
the hammer head rod is fixedly connected in the through hole above the hammer head rod seat;
the main shaft is provided with a tension spring shaft, and a tension spring ring provided with a bearing is fixedly connected with a tension spring clamp through the tension spring shaft; the tension spring ring is connected with a tension spring and a tension spring threaded rod in a hanging manner; the tension spring threaded rod is fixedly connected to the mounting seat protruding from the hammer head rod seat through a screw hole to be connected into a whole, so that the hammer head and the tension spring form linkage to move in the same direction;
the tension spring clamp is fixedly connected to the tension spring shaft sleeve through a screw;
the tension spring sleeve is fixedly connected to the main shaft;
the left side is two to be stepped on switching end cover left side and hammer head rod seat right side and is equipped with the bearing, makes left side hammer head group link during the main shaft, the left side is two to be stepped on switching end cover and hammer head rod seat and can drive the part of corresponding connection, forms the linkage.
Preferably, the right pedal further comprises: the rear part of the pedal is fixedly connected with a pedal hinge into a whole and is connected with a pedal bearing seat through a pedal shaft and then fixed on the bottom plate; a bearing is arranged in the pedal bearing seat, so that the pedal can move up and down around the pedal shaft; the front part of the pedal is fixedly connected with the front part of the pedal through a hinge; the bending rod is hinged with the front end of the pedal through a pedal shaft; the front section of the bending rod is abutted against the chain and is fixedly connected with the chain through a gap between the chains.
The chain pull rod seat is fixedly connected to the bottom plate; the rear part of the chain pull rod is fixedly connected to the chain pull rod seat through a pull rod shaft; a bearing is arranged in the chain pull rod seat, so that the chain pull rod can move up and down around a pull rod shaft; the front part of the chain pull rod is connected with the lower end of the chain through a chain shaft. The upper end of the chain is fixedly connected with the chain wheel through a screw; the chain wheel is connected on the end cover shaft sleeve;
preferably, the left pedal includes: the left pedal upright post is fixedly connected to the bottom plate and is used as a main pedal supporting structure; the left pedal shaft penetrates through the bearing above the left pedal upright post, and the right side of the left pedal shaft is fixed by a shaft lock and then rotates along with the bearing; a chain wheel sleeve is fixedly connected to the left pedal shaft; the chain wheel is fixed on the chain wheel sleeve.
Preferably, the left pedal further comprises: the rear part of the pedal is fixedly connected with the pedal hinge to form a whole, and is fixedly connected with the pedal bearing seat on the bottom plate through a pedal shaft; a bearing is arranged in the pedal bearing seat; the front part of the pedal is fixedly connected with the front part of the pedal through a hinge; the bending rod is connected with the front end of the pedal through a pedal shaft in a hinge mode; the front section of the bending rod is connected with the chain in a propping manner and is fixedly connected with the chain through a screw through a gap between the chains.
The chain pull rod seat is fixedly connected to the bottom plate, and the rear part of the chain pull rod is fixedly connected to the chain pull rod seat through a pull rod shaft; a bearing is arranged in the chain pull rod seat; the front part of the chain pull rod is connected with the lower end of a chain through a chain shaft, and the upper end of the chain is fixedly connected with a chain wheel; the chain wheel is clamped on the chain wheel sleeve, and the chain wheel sleeve is fixedly connected to the left pedal shaft;
a double-stepping connecting rod is arranged between the left double-stepping switching end cover and the shaft lock;
when the dual-treading left pedal is treaded down, the dual-treading connecting rod on the left pedal shaft and the connected left hammer head are driven to impact the drum surface forwards.
Compared with the prior art, the double-stepping chain linkage type pedal has the following improved technical effects:
1. the relative motion of the hammer head and the tension spring is changed, and the hammer head and the tension spring move in the same direction to reduce the rebound loss of the tension spring.
2. Through the bearing that is equipped with on the tup pole seat, it is more smooth and easy to move on the axle.
3. The bending rod can pull down the chain wheel quickly, and the rebounding is a more direct and quick driving pedal, so that the aim of following the more forceful movement of the foot is achieved.
4. The design of the structure of the utility model ensures that the pedal has excellent performance when being continuously stepped and variably stepped: easy control, easy control of the sound, rhythm conversion and excellent control performance.
Drawings
FIG. 1 is a schematic view of a dual pedal structure according to the present invention
FIG. 2 is a schematic view of the right side hammer head set of the right pedal hammer head set of the present invention
FIG. 3 is a schematic view of the structure of the left hammer set of the right pedal hammer set of the present invention
FIG. 4 is a schematic view of the left pedal of the present invention
FIG. 5 is a schematic view of the structure of the right pedal of the present invention
FIG. 6 is a left side view of the right pedal of the present invention
FIG. 7 is a left side view of the left pedal of the present invention
FIG. 8 is a schematic view of the connecting structure of the chain and the curved bar according to the present invention
FIG. 9 is a schematic view of the connection structure of the sprocket and the chain according to the present invention
In the figure: 1-right column, 2-left column, 3-bottom plate, 4-spindle, 5-bearing cap, 6-hammerhead bar seat, 7-hammerhead bar, 8-right hammerhead, 81-left hammerhead, 9-extension spring bushing, 10-extension spring clip, 11-extension spring shaft, 12-extension spring ring, 13-extension spring, 14-extension spring bar, 15-left double-step adapter cap, 16-right pedal, 161-left pedal, 17-pedal hinge, 18-pedal shaft, 19-pedal bearing seat, 20-pedal front hinge, 21-bending bar, 22-pedal shaft, 23-sprocket, 24-chain, 25-chain bar, 26-chain shaft, 27-chain bar seat, 28-pull bar shaft, 29-left pedal column, 30-left pedal shaft, 31-shaft lock, 32-chain wheel sleeve, 33-double-pedal connecting rod, 34-screw hole and 35-screw
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, the novel jazz drum double-tread chain linkage pedal includes a base plate 3, and a right pedal and a left pedal fixedly connected to the base plate 3, the right pedal includes a right upright 1 and a left upright 2 fixedly connected to the base plate 3, the right upright 1 and the left upright 2 are provided with a spindle 4, and the spindle 4 is provided with a right hammer head group and a left hammer head group;
the right hammer head group comprises: a hammer head rod seat 6 fixedly connected with the bearing end cover 5, and a hammer head 8 is fixedly connected on a hammer head rod 7; the hammer head rod 7 is fixedly connected in a through hole above the hammer head rod seat 6; the depth of the hammer head rod 7 inserted into the through hole can adjust the height of the drum surface hit by the hammer head;
the main shaft 4 is provided with a tension spring shaft 11, and a tension spring ring 12 provided with a bearing is fixedly connected with a tension spring clamp 10 through the tension spring shaft 11; the tension spring ring 12 is hung with a tension spring 13 and a tension spring threaded rod 14; the tension spring threaded rod 14 is fixedly connected to a mounting seat protruding from the hammer head rod seat 6 through a screw hole 34 to be connected into a whole, so that the hammer head and the tension spring form linkage to move in the same direction; the tightness of the tension spring is adjusted through the nut of the screw hole to generate different tension forces, so that the force exertion of the foot part is changed;
the tension spring clamp 11 is fixedly connected to the tension spring shaft sleeve 9 through a screw; the angle of the tension spring clamp 10, namely the angle of the hammer head, is adjusted through the tightness of the screw; the tension spring sleeve 9 is fixedly connected to the main shaft 4.
Bearings are arranged on the left side of the bearing end cover 5 and the right side of the hammer head rod seat 6, so that when the right hammer head group is connected with the main shaft 4, the bearing end cover 5 and the hammer head rod seat 6 can drive correspondingly connected parts to form linkage;
the left hammer head group comprises: the hammer head rod seat 6 is fixedly connected with the left double-stepping switching end cover 15, and the hammer head 8 is fixedly connected to the hammer head rod 7; the hammer head rod 7 is fixedly connected in a through hole above the hammer head rod seat 6; the depth of the hammer head rod 7 inserted into the through hole can adjust the height of the drum surface hit by the hammer head;
the main shaft 4 is provided with a tension spring shaft 11, and a tension spring ring 12 provided with a bearing is fixedly connected with a tension spring clamp 10 through the tension spring shaft 11; the tension spring ring 12 is hung with a tension spring 13 and a tension spring threaded rod 14; the tension spring threaded rod 14 is fixedly connected to a mounting seat protruding from the hammer head rod seat 6 through a screw hole 34 to be connected into a whole, so that the hammer head and the tension spring form linkage to move in the same direction; the tightness of the tension spring is adjusted through the nut of the screw hole to generate different tension forces, so that the force exertion of the foot part is changed;
the tension spring clamp 11 is fixedly connected to the tension spring shaft sleeve 9 through a screw; the angle of the tension spring clamp 10, namely the angle of the hammer head, is adjusted through the tightness of the screw; the tension spring sleeve 9 is fixedly connected to the main shaft 4;
the left side is two to be stepped on switching end cover 15 left side and tup pole seat 6 right side and is equipped with the bearing, makes left side hammer head group link when main shaft 4, the left side is two to be stepped on switching end cover 15 and tup pole seat 6 and can drive the part of corresponding connection, forms the linkage.
The right pedal further includes: the rear part of the pedal 16 is fixedly connected with a pedal hinge 17 into a whole, and is connected with a pedal bearing seat 19 through a pedal shaft 18 and then fixed on the bottom plate 3; a shaft is arranged in the pedal bearing seat, and the bearing enables the pedal 16 to move up and down around the pedal shaft 18; the front part of the pedal 16 is fixedly connected with a pedal front section hinge 20; the bending rod 21 is connected with the front end hinge 20 of the pedal through a pedal shaft 22; the front section of the bending rod 21 is abutted against the chain 24 and is fixedly connected with the chain 24 through a gap between the chains 24.
The chain pull rod seat 27 is fixedly connected to the bottom plate 3; the rear part of the chain pull rod 25 is fixedly connected to a chain pull rod seat 27 through a pull rod shaft 26; a bearing is arranged in the chain pull rod seat 27, so that the chain pull rod 25 can move up and down around a pull rod shaft; the chain stay 25 is connected at its front to the lower end of the chain 24 by a chain 26. The upper end of the chain is fixedly connected with the chain wheel 23 through a screw; the chain wheel 23 is clamped on the end cover shaft sleeve 5;
when the right pedal 16 is depressed by a foot, the bent lever 21, which abuts against the chain 24, pulls the chain 21 and the connected sprocket 23 downward. The chain wheel drives the bearing end cover 5, the hammer head rod seat 6, the hammer head rod 7, the hammer head 8 and the tension spring rod 14 to move forwards and clockwise around the main shaft 4. Since the tension spring sleeve 9 is fixed on the main shaft 4 and does not move, the corresponding tension spring clamp 10 does not move. The tension spring 13 generates a front-rear tension. When the foot is relaxed, the tension of the spring 13 acts to move its components in opposite directions;
the left pedal includes: a left pedal upright 29 fixedly connected to the base plate 3 as a main pedal supporting structure; the left pedal shaft 30 passes through a bearing above the left pedal upright post 29, and the right side of the left pedal shaft is fixed by a shaft lock 31 and then rotates along with the bearing; a chain wheel sleeve 32 is fixedly connected to the left pedal shaft 30; the chain wheel 23 is fixed on the chain wheel sleeve 32.
The left pedal further includes: a pedal 161, the rear part of which is fixedly connected with the pedal hinge 17 into a whole and is fixedly connected with the pedal bearing seat 19 on the bottom plate 3 through a pedal shaft 18; a bearing is arranged in the pedal bearing seat; the front part of the pedal 161 is fixedly connected with the pedal front section hinge 20; the bending rod 21 is connected with the front end hinge 20 of the pedal through a pedal shaft 22; the front section of the bending rod 21 is abutted against the chain 24 and is fixedly connected with the chain 24 through a gap between the chains 24 by using an M5 screw 35.
The chain pull rod seat 27 is fixedly connected to the bottom plate 3, and the rear part 25 of the chain pull rod is fixedly connected to the chain pull rod seat 27 through a pull rod shaft 26; a bearing is arranged in the chain pull rod seat 27; the front part of the chain pull rod 25 is connected with the lower end of a chain 24 through a chain shaft 26, and the upper end of the chain is fixedly connected with a chain wheel 23; the chain wheel 23 is clamped on the chain wheel sleeve 32, and the chain wheel sleeve 32 is fixedly connected on the left pedal shaft 30;
a double-stepping connecting rod 33 is arranged between the left double-stepping switching end cover 15 and the shaft lock 31.
In use, when the double-step left pedal 161 is stepped on, the double-step connecting rod 33 on the left pedal shaft 30 and the connected left hammer 81 are driven to strike the drum surface forwards.
In use, when the double left pedal 161 is depressed, the bending bar 21, which is pushed against the chain 24, pulls the chain 24 and the connected sprocket 23 downward. The sprocket wheel drives the sprocket wheel sleeve 32 and the left pedal shaft 30 to move forwards and clockwise. The left pedal shaft 30 moves and simultaneously drives the double-stepping connecting rod 33, the left double-stepping connecting end cover 15 connected with the double-stepping connecting rod and the left hammer head group to move forwards and clockwise around the main shaft 4. Since the tension spring sleeve 9 is fixed on the main shaft 4 and does not move, the corresponding tension spring clamp 10 does not move. The tension spring 13 generates a front-rear tension. The tension of the spring 13 acts to move its components in opposite directions when the foot is relaxed.
The double-treading chain linkage type pedal overcomes the defects that the traditional chain type pedal has no force, the pedal rebounds slowly, the sound of a beating drum surface is not transparent and the like:
1. through changing the relative motion of tup and extension spring, tup and extension spring syntropy motion reduce the loss that the extension spring kick-backed.
2. The main shaft is fixed and does not rotate, and the bearing is arranged on the hammer head rod seat, so that the movement on the shaft is smoother.
3. The design of the bent rod can quickly pull down the chain wheel and more directly and quickly drive the pedal plate during rebounding, so that the aim of following the more forceful movement of the foot is achieved.
4. The pedal can have excellent expression of striking tone when being continuously stepped or being variably stepped: the sound intensity is controlled very easily, and the feet can be attached to the feet in a complex rhythm.
Claims (5)
1. The utility model provides a novel two chain coordinated type footboards of stepping on of jazz drum pucks, includes bottom plate (3), with bottom plate (3) fixed connection's right footboard and left footboard, characterized by:
the right pedal includes: the right upright post (1) and the left upright post (2) are fixedly connected to the bottom plate (3), a main shaft (4) is arranged on the right upright post (1) and the left upright post (2), and a right hammer head group and a left hammer head group are arranged on the main shaft (4);
the right hammer head group comprises: the hammer head rod seat (6) is fixedly connected with the bearing end cover (5), and the hammer head (8) is fixedly connected to the hammer head rod (7); the hammer head rod (7) is fixedly connected in the through hole above the hammer head rod seat (6);
the main shaft (4) is provided with a tension spring shaft (11), and a tension spring ring (12) provided with a bearing is fixedly connected with a tension spring clamp (10) through the tension spring shaft (11); the tension spring ring (12) is connected with a tension spring (13) and a tension spring threaded rod (14) in a hanging manner; the tension spring threaded rod (14) is fixedly connected to a mounting seat protruding from the hammer head rod seat (6) through a screw hole (34) to be connected into a whole, so that the hammer head and the tension spring are linked to move in the same direction;
the tension spring clamp (10) is fixedly connected to the tension spring shaft sleeve (9) through a screw; the tension spring shaft sleeve (9) is fixedly connected to the main shaft (4);
and bearings are arranged on the left side of the bearing end cover (5) and the right side of the hammer head rod seat (6).
2. The novel jazz drum tom drum double-treading chain linkage pedal as defined in claim 1, which is characterized in that: the left hammer head group comprises: the hammer head rod seat (6) is fixedly connected with the left double-stepping switching end cover (15), and the left hammer head (81) is fixedly connected to the hammer head rod (7); the hammer head rod (7) is fixedly connected in the through hole above the hammer head rod seat (6);
the main shaft (4) is provided with a tension spring shaft (11), and a tension spring ring (12) provided with a bearing is fixedly connected with a tension spring clamp (10) through the tension spring shaft (11); the tension spring ring (12) is connected with a tension spring (13) and a tension spring threaded rod (14) in a hanging manner; the tension spring threaded rod (14) is fixedly connected to a mounting seat protruding from the hammer head rod seat (6) through a screw hole (34) to be connected into a whole, so that the hammer head and the tension spring are linked to move in the same direction;
the tension spring clamp (10) is fixedly connected to the tension spring shaft sleeve (9) through a screw; the tension spring shaft sleeve (9) is fixedly connected to the main shaft (4);
and bearings are arranged on the left side of the left double-step switching end cover (15) and the right side of the hammer head rod seat (6).
3. The novel jazz drum tom drum double-stepping chain linkage pedal as claimed in claim 1 or 2, which is characterized in that: the right pedal further includes: the rear part of the pedal (16) is fixedly connected with a pedal hinge (17) into a whole, and is connected with a pedal bearing seat (19) through a pedal shaft (18) and then fixed on the bottom plate (3); a bearing is arranged in the pedal bearing seat; the front part of the pedal (16) is fixedly connected with a hinge (20) at the front end of the pedal; the bending rod (21) is connected with a hinge (20) at the front end of the pedal through a pedal shaft (22); the front section of the bending rod (21) is abutted against the chain (24) and is fixedly connected with the chain (24) through a gap between the chains (24);
the chain pull rod seat (27) is fixedly connected to the bottom plate (3); the rear part of the chain pull rod (25) is fixedly connected to a chain pull rod seat (27) through a chain shaft (26); a bearing is arranged in the chain pull rod seat (27); the front part of the chain pull rod (25) is connected with the lower end of the chain (24) through a chain shaft (26); the upper end of the chain is fixedly connected with the chain wheel (23) through a screw; the chain wheel (23) is clamped on the bearing end cover (5).
4. The novel jazz drum tom drum double-stepping chain linkage pedal as claimed in claim 1 or 2, which is characterized in that: the left pedal includes: the left pedal upright post (29) is fixedly connected to the bottom plate (3) and is used as a main pedal supporting structure; a left pedal shaft (30) passes through a bearing above the left pedal upright post (29), and the right side of the left pedal shaft is fixed by a shaft lock (31) and then rotates along with the bearing; a chain wheel sleeve (32) is fixedly connected to the left pedal shaft (30); the chain wheel (23) is fixed on the chain wheel sleeve (32).
5. The novel jazz drum tom drum double-treading chain linkage pedal as defined in claim 4, which is characterized in that: the left pedal further includes: the rear part of the left pedal (161) is fixedly connected with a pedal hinge (17) to form a whole, and the left pedal and a pedal bearing seat (19) are fixedly connected on the bottom plate (3) through a pedal shaft (18); a bearing is arranged in the pedal bearing seat; the front part of the left pedal (161) is fixedly connected with a pedal front end hinge (20); the bending rod (21) is connected with a hinge (20) at the front end of the pedal through a pedal shaft (22); the front section of the bending rod (21) is abutted against the chain (24) and is fixedly connected with the chain (24) through a screw (35) through a gap between the chains (24);
the chain pull rod seat (27) is fixedly connected to the bottom plate (3), and the rear part of the chain pull rod (25) is fixedly connected to the chain pull rod seat (27) through a chain shaft (26); a bearing is arranged in the chain pull rod seat (27); the front part of the chain pull rod (25) is connected with the lower end of a chain (24) through a chain shaft (26), and the upper end of the chain is fixedly connected with a chain wheel (23); the chain wheel (23) is clamped on the chain wheel sleeve (32), and the chain wheel sleeve (32) is fixedly connected to the left pedal shaft (30);
a double-stepping connecting rod (33) is arranged between the left double-stepping switching end cover (15) and the shaft lock (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023218055.XU CN215376891U (en) | 2020-12-28 | 2020-12-28 | Novel two chain coordinated type footboards of stepping on of jazz drum pucks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023218055.XU CN215376891U (en) | 2020-12-28 | 2020-12-28 | Novel two chain coordinated type footboards of stepping on of jazz drum pucks |
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| CN215376891U true CN215376891U (en) | 2021-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112634840A (en) * | 2020-12-28 | 2021-04-09 | 北京骎英教育科技有限公司 | Novel two chain coordinated type footboards of stepping on of jazz drum pucks |
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2020
- 2020-12-28 CN CN202023218055.XU patent/CN215376891U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112634840A (en) * | 2020-12-28 | 2021-04-09 | 北京骎英教育科技有限公司 | Novel two chain coordinated type footboards of stepping on of jazz drum pucks |
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