CN113545620A - Piano stool with double air pressure rods arranged in staggered and crossed manner - Google Patents
Piano stool with double air pressure rods arranged in staggered and crossed manner Download PDFInfo
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- CN113545620A CN113545620A CN202110831449.2A CN202110831449A CN113545620A CN 113545620 A CN113545620 A CN 113545620A CN 202110831449 A CN202110831449 A CN 202110831449A CN 113545620 A CN113545620 A CN 113545620A
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- air pressure
- rod
- pressure rod
- stool
- fixing frame
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
- A47C9/08—Music stools
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
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Abstract
The invention discloses a piano stool with double air pressure rods arranged in a staggered and crossed manner, which comprises a cushion, a first stool body, a second stool body and a lifting device, wherein the lifting device comprises: the upper fixing frame, the lower fixing frame, the X-shaped scissor mechanism, the second-stage scissor mechanism, the pushing device and the rotating rod are connected between the upper fixing frame and the lower fixing frame, the upper fixing frame and the lower fixing frame are connected with the first air pressure rod and the second air pressure rod, the first air pressure rod and the second air pressure rod are staggered and crossed but do not contact with each other, in the using process, the X-shaped scissor mechanism and the second-stage scissor mechanism can play a supporting role, the first air pressure rod and the second air pressure rod are staggered and crossed to be arranged in an X-shaped structure, the direction of force applied to the upper fixing frame is not perpendicular to the upper fixing frame, and therefore collision between piano stool connecting pieces is prevented, and abnormal sound is emitted.
Description
Technical Field
The invention relates to the field of piano accessories, in particular to a piano stool with double air pressure rods arranged in a staggered and crossed manner.
Background
The piano is a keyboard instrument in Western classical music, has the beauty of the king of the instrument, has soft and flexible characteristics, can improve the aesthetic quality and quality of people after long-term practice, and is deeply loved by the masses. In recent years, with the increasing living standard of people, the king of a musical instrument, namely a piano, also comes to common people, and accordingly, piano stools are also well known.
In the piano playing process, when the player plays, the body swings along with the beat of music, the stress on the surface of the piano stool is uneven, the piano stool connecting piece is collided, and the playing effect is influenced by abnormal sound.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the piano stool with the double air pressure rods arranged in a staggered and crossed manner, the movement of the upper fixing frame is controlled by the X-shaped scissor mechanism and the secondary scissor mechanism, and meanwhile, the two air pressure rods which are mutually crossed are used for providing thrust for the upper fixing frame, so that the piano stool is prevented from shaking greatly to generate abnormal sound in the using process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a piano stool with double air pressure rods arranged in a staggered and crossed manner comprises a first stool body, a second stool body and a lifting mechanism, wherein the upper end and the lower end of the lifting mechanism are respectively connected with the first stool body and the second stool body, a cuboid interlayer is formed between the first stool body and the second stool body, and the lifting mechanism comprises a scissor fork mechanism, a first air pressure rod, a second air pressure rod and a control assembly; the upper end and the lower end of the scissor mechanism are respectively connected with the first stool body and the second stool body, a first air pressure rod and a second air pressure rod are connected between the first stool body and the second stool body, the control assembly is connected with the first air pressure rod and the second air pressure rod and controls the first air pressure rod and the second air pressure rod to lift, and the first air pressure rod and the second air pressure rod are obliquely arranged and staggered and crossed and are close to each other but not in contact with each other.
Preferably, one end of the scissor mechanism is connected with the first stool body through a lower fixing frame, and the other end of the scissor mechanism is connected with the second stool body through an upper fixing frame; the lower fixing frame is embedded in the first stool body, the upper fixing frame is embedded in the second stool body, the lower fixing frame is embedded in the first supporting frame, and the upper fixing frame is embedded in the second supporting frame.
Preferably, the scissor mechanism comprises a scissor rod assembly, a roller and a sliding groove, a connecting end point at the bottom of the scissor rod assembly is hinged to the lower fixing frame, another connecting end point at the bottom of the scissor rod assembly is connected with a first guide rail, the first guide rail is fixedly arranged on the lower fixing frame, a connecting end point at the top of the scissor rod assembly is hinged to the upper fixing frame, another connecting end point at the top of the scissor rod assembly is connected with a second guide rail, the second guide rail is fixedly connected with the upper fixing frame, and the scissor rod assembly is connected with the roller capable of driving the scissor rod assembly to stretch along the vertical direction.
Preferably, four sets of the scissor mechanisms are arranged between the first stool body and the second stool body, and the scissor mechanisms are distributed on four side surfaces of the cuboid interlayer.
Preferably, the scissor mechanism may be one or more of an X-shaped scissor framework, a two-stage scissor mechanism, or a multi-stage scissor framework, and two sets of scissor mechanisms located on opposite surfaces of the cuboid are the same.
Preferably, the first pneumatic rod and the second pneumatic rod each include: the cylinder body and the rod body are coaxially sleeved, the cylinder body and the rod body are both connected with a rotating pin, and the rotating pin connected with the rod bodies of the first air pressure rod and the second air pressure rod is connected with the second support frame and is positioned on the lower surface of the second support frame; the rotating pin connected with the first air pressure rod cylinder body and the second air pressure rod cylinder body is connected with the first support frame, the rotating pin connecting part connected with the first air pressure rod cylinder body is positioned on the first support frame, and the rotating pin connecting part connected with the second air pressure rod cylinder body is positioned on the first support frame.
Preferably, the control assembly comprises a rotating rod, rotating handles and brake cables, the rotating rod penetrates through two sides of the second stool body, two ends of the rotating rod protrude out of two sides of the second stool body, two ends of the rotating rod are fixedly connected with the two rotating handles, the brake cables are connected with the rotating rod, the first air pressure rod and the second air pressure rod, one end of each brake cable is connected with the rotating rod in a winding mode, the other end of each brake cable is divided into two parts and is respectively connected with the first air pressure rod and the second air pressure rod, the brake cables are tightened when the rotating rod is rotated, and the first air pressure rod and the second air pressure rod are controlled to stretch and retract simultaneously.
Preferably, the second stool body is connected with a cushion, and the cushion is detachably connected with the second stool body.
Preferably, the first air pressure rod and the second air pressure rod are arranged along a diagonal direction, a rotating pin connected with a cylinder body of the first air pressure rod and the second air pressure rod is connected with the first support frame, the connecting position of the rotating pin connected with the cylinder body of the first air pressure rod is located on the upper surface of the first support frame, and the connecting position of the rotating pin connected with the cylinder body of the second air pressure rod is located on the lower surface of the first support frame.
Preferably, the upper surface of the first stool body is provided with a buffering bulge, and the second stool body stops descending after descending and contacting with the buffering bulge
The invention discloses a stable and liftable piano stool, which comprises a cushion, a first stool body, a second stool body and a lifting device, wherein the lifting device comprises: the upper fixing frame, the lower fixing frame, the X-shaped scissor mechanism, the second-stage scissor mechanism, the pushing device and the rotating rod are connected between the upper fixing frame and the lower fixing frame, the upper fixing frame and the lower fixing frame are connected with the first air pressure rod and the second air pressure rod, the first air pressure rod and the second air pressure rod are staggered and crossed but do not contact, in the using process, the X-shaped scissor mechanism and the second-stage scissor mechanism can play a supporting role, the first air pressure rod and the second air pressure rod are staggered and crossed to be arranged in an X-shaped mode, the direction of force applied to the upper fixing frame is not perpendicular to the upper fixing frame, and therefore collision between piano stool connecting pieces can be prevented, and abnormal sound is caused to influence playing effect.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a structural view of the lifting device of the present invention;
FIG. 4 is a cross-sectional view of the scissors mechanism of the present invention;
FIG. 5 is an enlarged view of a portion A of FIG. 1 in accordance with the present invention;
fig. 6 is a view showing an original state of the piano stool of the present invention.
The main element symbols are as follows:
1. a lower fixing frame;
2. an upper fixing frame;
3. an X-shaped scissor mechanism;
4. a secondary scissor mechanism;
5. a pushing device;
51. a first pneumatic rod;
52. a second pneumatic rod;
6. rotating the rod;
7. rotating the handle;
8. a brake cable;
9. a first stool body;
10. a second stool body;
11. a cushion;
12. fixing rod
13. Lifting mechanism
14. Buffer the protruding.
Detailed description of the invention
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The piano player needs to adjust the height of the piano stool according to the requirements during the use process, the piano player uses the double air pressure rods to provide 400N thrust for the piano stool, and because the air pressure rods adopt an oblique staggered crossed installation method, the thrust of the air pressure rods on the piano stool can be divided into a component force in the vertical direction and a component force in the horizontal direction, so that the piano stool can slowly rise and fall, the adjustment is convenient, meanwhile, four groups of shear fork mechanisms are arranged between the first stool body and the second stool body of the piano stool, the four groups of shear fork mechanisms support the second stool body, and the component force in the horizontal direction of the air pressure rods interacts with the shear fork mechanisms, so that the second stool body is prevented from shaking when being stressed, and the connecting pieces are prevented from colliding, and abnormal sound is emitted.
Referring to fig. 1-3, a piano stool with two crossed air pressure rods comprises a first stool body 9, a second stool body 10 and a lifting device 13, wherein the lifting device 13 comprises: an upper fixing frame 2, a lower fixing frame 1 and a scissor fork mechanism, thrust unit 5, dwang 6, form the cuboid intermediate layer between first bench body 9 and the second bench body 10, it distributes on four interbedded faces of cuboid to cut the fork mechanism, it includes that X type cuts fork mechanism 3 and second grade and cuts fork mechanism 4 to cut the fork mechanism, lower mount 1 is placed on the horizontal plane, it cuts fork mechanism 3 and two sets of second grade and cuts fork mechanism 4 to be connected with two sets of X type between upper mounting frame 2 and the lower mount 1, the long limit of lower mount 1 and the long limit of upper mounting frame 2 are connected respectively to X type cuts fork mechanism 3 both ends, the short edge of lower mount 1 and the short edge of upper mounting frame 2 are connected respectively to the both ends that second grade was cut fork mechanism 4, be connected with thrust unit 5 between upper mounting frame 2 and the lower mount 1, thrust unit 5 includes first pneumatic rod 51 and second pneumatic rod 52, first pneumatic rod 51 and second pneumatic rod 52 intercross but do not take place the contact.
In this embodiment, a first support frame is arranged between two long sides of the lower fixing frame 1, the first support frame is vertically connected with the long side of the lower fixing frame 1, a second support frame is arranged between two long sides of the upper fixing frame 2, and the second support frame is located on the upper end face of the upper fixing frame 2 and is vertically connected with the upper side.
In this embodiment, the first pneumatic rod and the second pneumatic rod use a gas-liquid hybrid pneumatic rod, the first pneumatic rod 51 and the second pneumatic rod 52 are disposed along a diagonal direction of the rectangular parallelepiped interlayer, and both the first pneumatic rod 51 and the second pneumatic rod 52 include: the cylinder body and the rod body are coaxially sleeved, the cylinder body and the rod body are both connected with a rotating pin, and the rotating pin connected with the rod body of the first air pressure rod 51 and the rod body of the second air pressure rod 52 is connected with the second support frame and is positioned on the lower surface of the second support frame; the rotating pin connected with the cylinder bodies of the first air pressure rod 51 and the second air pressure rod 52 is connected with the first support frame, the connecting position of the rotating pin connected with the cylinder body of the first air pressure rod is positioned on the upper surface of the first support frame, and the connecting position of the rotating pin connected with the cylinder body of the second air pressure rod is positioned on the lower surface of the first support frame, so that a gap is formed between the first air pressure rod 51 and the second air pressure rod 52, the first air pressure rod 51 and the second air pressure rod 52 are conveniently connected in a cross mode, and meanwhile, the first air pressure rod 51 and the second air pressure rod 52 are prevented from being collided and extruded in the lifting process of the upper fixing frame, and damage is caused to the first air pressure rod 51 and the second air pressure rod 52.
In this embodiment, the X-shaped scissors mechanism 3 includes an X-shaped scissors rod assembly, a roller 1 and a sliding chute 1, one side of the X-shaped scissors rod assembly, which is the same as the top end and the bottom end, is fixedly connected to the inner surfaces of the upper fixing frame and the lower fixing frame, the other side of the X-shaped scissors rod assembly is provided with the roller 1, the sliding chute 1 is fixedly connected to the inner surfaces of the upper fixing frame and the lower fixing frame, and the roller 1 rolls along the sliding chute 1; fork mechanism 4 is cut to second grade includes that the fork pole subassembly is cut to the second grade, gyro wheel 2 and spout 2, the same one side fixed connection in second grade fork pole subassembly top and bottom is at the internal surface of last mount and lower mount, the opposite side is equipped with gyro wheel 2, 2 fixed connection in spout are at the internal surface of last mount and lower mount, 2 rolls along spout 2, it changes to work as the distance between mount and the lower mount, the distance of the both sides of X type fork pole subassembly and second grade fork pole subassembly changes thereupon, X type fork pole subassembly and second grade fork pole subassembly one side are fixed, the position of opposite side removes in the spout.
In this embodiment, a fixing rod 12 is disposed between the two sets of X-shaped scissors mechanisms 3, two ends of the fixing rod are respectively fixedly connected to the two sets of X-shaped scissors mechanisms 3, when one side of the X-shaped scissors mechanism 3 operates, the other side of the X-shaped scissors mechanism 3 operates synchronously, and when the upper fixing frame 2 is subjected to a horizontal force, the position between the two sets of X-shaped scissors mechanisms 3 cannot be changed.
In this embodiment, the two short sides of the rotating rod 6 penetrating through the upper fixing frame 2 are perpendicular to the two short sides, the two ends of the rotating rod 6 protrude out of the two sides of the upper fixing frame 2, and the two ends of the rotating rod 6 are fixedly connected with the two rotating handles 7.
In this embodiment, the rotating rod 6 is connected with the first pneumatic rod 51 and the second pneumatic rod 52 by using the brake cable 8, one end of the brake cable 8 is connected with the rotating rod 6 in a winding manner, the other end of the brake cable 8 is divided into two parts, the brake cable 8 is in a Y-shaped structure, two ends of the two divided parts of the brake cable are respectively connected with the first pneumatic rod 51 and the second pneumatic rod 52, when the rotating rod 6 is rotated, the brake cable 8 is tightened, and the first pneumatic rod 51 and the second pneumatic rod 52 are controlled to stretch and retract at the same time.
In this embodiment, the first stool body 9 is fixedly connected to the lower fixing frame 1, the upper and lower surfaces of the second stool body 10 are both provided with grooves, the lower surfaces of the upper fixing frame 2 and the second stool body 10 are sleeved and fixedly connected to each other, and the seat cushion 11 is detachably connected to the upper surface of the second stool body 10 in a groove-fitting manner.
In this embodiment, first bench body is equipped with four bench legs, and adjustable slipmat is installed to bench leg bottom, and when the ground of unevenness was used, it kept steadily to let the piano bench through adjusting the slipmat.
In this embodiment, the upper surface of the first stool body 9 is provided with a buffering protrusion, which may be a rubber product, and stops descending after the second stool body 10 descends and contacts with the buffering protrusion, and the buffering protrusion also plays a role of buffering.
In this embodiment, the first stool body 9 and the second stool body 10 can be selected from one or more of oak, beech, rosewood and other wood species.
In the using process of the invention, a player sits on the piano stool, the rotating rod rotates and tightens the brake cable by twisting the rotating handle, the brake cable tightens to control the contraction of the first air pressure rod and the second air pressure rod, the scissor mechanism is folded to make the second stool body descend, when the second stool body descends to a proper height, the rotating handle is loosened, the brake cable is loosened, the first air pressure rod and the second air pressure rod stop contracting, however, when the rotating handle is twisted, the body can incline to one side because of different habits or shake in the playing process, so the second stool body can be acted by horizontal acting force, and the invention has a fixing function on the second stool body because the four sets of scissor mechanisms are arranged between the first stool body and the second stool body, and the first air pressure rod and the second air pressure rod are arranged in an oblique staggered way, and crossed way, and the air pressure rod and the second air pressure rod can divide the piano stool into vertical component force and horizontal component force, the piano stool is more stable, so that the piano stool cannot be influenced by shaking within a certain range.
The invention has the advantages that:
1. it cuts fork mechanism and two sets of second grade and cuts fork mechanism to be connected with two sets of X types between mount and the lower mount, the long limit of mount and the long limit of mount are cut respectively down to X type cut fork mechanism both ends, the minor face of mount and the minor face of mount are cut respectively to the both ends that fork mechanism was cut to the second grade, be equipped with the dead lever between two sets of X types cut fork mechanism, the dead lever both ends cut fork mechanism fixed connection with two sets of X types respectively, in the use, X type is cut fork mechanism and second grade and is cut fork mechanism and not only have the supporting role, still have the fixed action, when the mount receives the effort of different horizontal directions, X type is cut fork mechanism and second grade and is cut fork mechanism and can reduce the degree of rocking of mount.
2. The upper fixing frame and the lower fixing frame are connected with a pushing device, the pushing device comprises a first air pressure rod and a second air pressure rod, the first air pressure rod and the second air pressure rod are crossed in a staggered mode, the first air pressure rod and the second air pressure rod are of an X-shaped structure, the air pressure rods apply force to the fixing frame along the stretching direction of the air pressure rods, therefore, the lifting speed of the upper fixing frame is moderate, and when large force is applied to the upper fixing frame along the vertical direction suddenly, the first air pressure rod and the second air pressure rod are of the X-shaped structure, so that collision between connecting pieces can be prevented.
3. The invention has the characteristics of simple structure, economy, convenience in storage, stability and reliability, and is simple to operate in the using process.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. The utility model provides a piano bench of two atmospheric pressure pole dislocation cross arrangement, includes first bench body, second bench body and elevating system, and both ends are connected respectively about the affiliated elevating system first bench body with second bench body, its characterized in that: a cuboid interlayer is formed between the first stool body and the second stool body, and the lifting mechanism comprises a scissor mechanism, a first air pressure rod, a second air pressure rod and a control assembly; the upper end and the lower end of the scissor mechanism are respectively connected with the first stool body and the second stool body, a first air pressure rod and a second air pressure rod are connected between the first stool body and the second stool body, the control assembly is connected with the first air pressure rod and the second air pressure rod and controls the first air pressure rod and the second air pressure rod to lift, and the first air pressure rod and the second air pressure rod are obliquely arranged, staggered and arranged in a clearance mode.
2. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 1, wherein: one end of the scissor mechanism is connected with the first stool body through a lower fixing frame, and the other end of the scissor mechanism is connected with the second stool body through an upper fixing frame; the lower fixing frame is embedded in the first stool body, the upper fixing frame is embedded in the second stool body, the lower fixing frame is embedded in the first supporting frame, and the upper fixing frame is embedded in the second supporting frame.
3. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 2, wherein: the scissor mechanism comprises a scissor rod assembly, a roller and a sliding groove, a connecting end point at the bottom of the scissor rod assembly is hinged to the lower fixing frame, another connecting end point at the bottom of the scissor rod assembly is connected with a first guide rail, the first guide rail is fixedly arranged on the lower fixing frame, a connecting end point at the top of the scissor rod assembly is hinged to the upper fixing frame, another connecting end point at the top of the scissor rod assembly is connected with a second guide rail, the second guide rail is fixedly connected with the upper fixing frame, and the scissor rod assembly is connected with the roller capable of driving the scissor rod assembly to stretch in the vertical direction.
4. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 1, wherein: four groups of scissor mechanisms are arranged between the first stool body and the second stool body, and the scissor mechanisms are distributed on four side surfaces of the cuboid interlayer.
5. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 4, wherein: the shearing fork mechanism can be one or more of an X-shaped shearing fork framework, a two-stage shearing fork mechanism and a multi-stage shearing fork framework, and two groups of shearing fork mechanisms positioned on the opposite surfaces of the cuboid are the same.
6. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 2, wherein: the first pneumatic rod and the second pneumatic rod both comprise: the cylinder body and the rod body are coaxially sleeved, the cylinder body and the rod body are both connected with a rotating pin, and the rotating pin connected with the rod bodies of the first air pressure rod and the second air pressure rod is connected with the second support frame and is positioned on the lower surface of the second support frame; the rotating pin connected with the first air pressure rod cylinder body and the second air pressure rod cylinder body is connected with the first support frame, the rotating pin connecting part connected with the first air pressure rod cylinder body is positioned on the first support frame, and the rotating pin connecting part connected with the second air pressure rod cylinder body is positioned on the first support frame.
7. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 1, wherein: the control assembly comprises a rotating rod, rotating handles and brake cables, the rotating rod penetrates through two sides of the second stool body, two ends of the rotating rod protrude out of two sides of the second stool body, the two ends of the rotating rod are fixedly connected with the two rotating handles, the brake cables are connected with the rotating rod, the first air pressure rod and the second air pressure rod, one end of each brake cable is connected with the rotating rod in a winding mode, the other end of each brake cable is divided into two parts to be connected with the first air pressure rod and the second air pressure rod respectively, the brake cables are tightened when the rotating rod is rotated, and the first air pressure rod and the second air pressure rod are controlled to stretch and retract simultaneously.
8. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 1, wherein: the second stool body is connected with a cushion, and the cushion is detachably connected with the second stool body.
9. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 6, wherein: the first air pressure rod and the second air pressure rod are arranged along the diagonal direction of the long body interlayer, the rotating pin connected with the cylinder body of the first air pressure rod and the second air pressure rod is connected with the first support frame, the connecting position of the rotating pin connected with the cylinder body of the first air pressure rod is positioned on the upper surface of the first support frame, and the connecting position of the rotating pin connected with the cylinder body of the second air pressure rod is positioned on the lower surface of the first support frame.
10. The piano stool with the staggered and crossed double air pressure rods as claimed in claim 1, wherein: the upper surface of the first stool body is provided with a buffering bulge, and the second stool body stops descending after descending and contacting the buffering bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831449.2A CN113545620A (en) | 2021-07-22 | 2021-07-22 | Piano stool with double air pressure rods arranged in staggered and crossed manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110831449.2A CN113545620A (en) | 2021-07-22 | 2021-07-22 | Piano stool with double air pressure rods arranged in staggered and crossed manner |
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| CN113545620A true CN113545620A (en) | 2021-10-26 |
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| CN202110831449.2A Pending CN113545620A (en) | 2021-07-22 | 2021-07-22 | Piano stool with double air pressure rods arranged in staggered and crossed manner |
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| CN109052219A (en) * | 2018-09-18 | 2018-12-21 | 林兵兵 | A kind of stilt formula elevating device |
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