Keyboard turnover device

Abstract

A keyboard turnover device comprises a fixed main frame, a movable main frame, a baffle, a plurality of top pressing devices and two side pressing devices, the movable main frame comprises a placing frame, a top frame, a connecting frame and a transmission shaft, the transmission shaft is fixedly arranged on the placing frame and rotationally connected to the fixed main frame, the top face of the placing frame comprises a placing area, the top frame is arranged above the placing area at intervals, and the connecting frame is connected with the connecting frame. The two ends of the connecting frame are connected to the top frame and the containing frame respectively, the multiple jacking devices are arranged on the top frame at intervals in the first direction and can stretch out and draw back towards the containing area so as to press the top face of the keyboard, the two side pressing devices are arranged on the two sides of the containing area at intervals in the first direction, and the baffle is arranged above the containing area. The side pressing device can move to the position above the baffle. According to the turnover device, the keyboard can be turned over by rotating the movable main frame, the effects of low manpower consumption and uniform pressure on the keyboard are achieved, and the loss probability of the keyboard in the turnover process is low.

Description

Technical Field

[0001] The utility model relates to the technical field of piano manufacturing, in particular to a keyboard flipping device. Background Art

[0002] At present, in a grand piano, after stepping on the left pedal, the transmission rod pushes the keyboard, which can achieve effects such as changing the volume and timbre. Among them, the transmission rod is installed in the customized groove on the bottom surface of the middle plate, and the transmission rod head extends into the keyboard customized groove through the middle plate hole. Since it is necessary to install the keys and other components into the plate body first, adjust the positions of each component, and then process the customized groove, the processing method of the customized groove is relatively complicated. Specifically, the operator holds the action mechanism bracket tightly with both hands, takes the keyboard out of the piano body and puts it on the woodworking bench, uses a wooden stick with the same length as the keyboard, and places it above the connection between the hammer and the hammer handle. Press the wooden stick with your hand so that the wooden stick presses all the hammers, and lifts the keyboard with the other hand and turns it over and places it on the woodworking bench, then takes away the wooden stick and processes the customized groove on the bottom surface of the plate body. After completion, use one hand to press the hammer handle with a wooden stick, and use the other hand to flip the keyboard over so that it is placed upright on the woodworking bench, and then put the keyboard back into the piano body. This processing method is very labor-intensive, and the force applied to the hammer is uneven, which can easily break the hammer handle. Utility Model Content

[0003] The utility model aims to provide a keyboard flipping device to solve the technical problems that processing the customized grooves of a piano keyboard is relatively labor-intensive and keyboard components are easily damaged during the processing.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a keyboard flipping device, including a fixed main frame, a movable main frame, a baffle, a plurality of top pressers and two side pressers, the movable main frame including a placement frame, a top frame, a connecting frame and a transmission shaft, the transmission shaft is fixedly arranged on the placement frame, the transmission shaft is rotatably connected to the fixed main frame, the top surface of the placement frame includes a placement area, the top frame is spaced above the placement area, the two ends of the connecting frame are respectively connected to the top frame and the placement frame, a plurality of the top pressers are spaced on the top frame along a first direction, the top pressers can be extended and retracted in the direction of the placement area to press on the top surface of the keyboard, the two side pressers are respectively arranged on both sides of the placement area along the first direction with the placement area spaced apart, the baffle is arranged above the placement area, the baffle is used to prevent the keys of the keyboard from falling, and the side pressers can move to the top of the baffle to prevent the baffle from falling.

[0005] Optionally, it also includes a first driver and an electric box, wherein the first driver and the electric box are fixed to the fixed main frame, the electric box is connected to the first driver, and the first driver is connected to the transmission shaft to drive the movable main frame to rotate.

[0006] Optionally, it further includes a gearbox fixedly provided on the fixed main frame. The first driver is connected to the gearbox, and the gearbox is connected to the transmission shaft.

[0007] Optionally, it further includes two bearing seats fixedly provided on the fixed main frame. The two bearing seats are respectively located on opposite sides of the placement rack along the first direction. The transmission shaft passes through the bearing bodies of the two bearing seats, and the transmission shaft is connected to the bearing bodies of the bearing seats.

[0008] Optionally, a through traveling hole is provided on the top surface of the top frame. The traveling hole is an elongated hole extending along the first direction, and the traveling hole corresponds to the placement area. The top presser is a piston cylinder, and the cylinder body of the top presser is installed on the top surface of the top frame, and the piston rod of the top presser passes through the traveling hole.

[0009] Optionally, the side presser includes a second driver, a connecting shaft, and a stopper that are sequentially arranged and connected from bottom to top. The second driver can drive the stopper to rotate along the axis of the connecting shaft so that the stopper moves above the baffle.

[0010] Optionally, the movable main frame includes two connecting frames. The top ends of the two connecting frames are respectively connected to opposite side surfaces of the top frame along the first direction, and the bottom ends of the connecting frames are connected to the top surface of the placement rack.

[0011] Optionally, the length of the fixed main frame is 1600 mm to 1800 mm, and the width is 900 mm to 1100 mm. The length of the movable main frame is 1400 mm to 1600 mm, and the width is 700 mm to 900 mm.

[0012] Optionally, it further includes a shield. The shield includes a vertical plate and a horizontal plate. Both the vertical plate and the horizontal plate extend along the first direction. The vertical plate is provided on the top surface of the placement rack at an interval from the placement area, and the horizontal plate is provided on the top surface of the vertical plate. The horizontal plate is located above the placement area to prevent the hammer shank of the keyboard from falling.

[0013] Compared with the prior art, the beneficial effects of the keyboard flipping device according to the embodiment of the present invention are as follows:

[0014] The fixed main frame in this utility model is fixedly installed on the ground and is used to install other components. The fixed main frame is rotationally connected to the placement frame of the movable main frame through a transmission shaft to achieve the function of flipping the movable main frame. Further, the top frame of the movable main frame is spaced above the placement area of the placement frame, and a plurality of top presses are arranged on the top frame, and the top presses can stretch towards the placement area to press the keyboard on the placement frame to achieve the function of fixing the keyboard. Further, a baffle is arranged above the placement area to block above the keys of the keyboard, thereby preventing the keys of the keyboard from falling. Two side presses are respectively arranged on both sides of the placement area at intervals along the first direction. The side presses can move above the baffle to block above the baffle, thereby preventing the baffle from falling. In summary, the flipping device of this utility model can fix the keyboard on the movable main frame and flip the keyboard by rotating the movable main frame, with the effects of less manpower consumption and relatively uniform pressure on the keyboard, and a low probability of loss of the keyboard during the flipping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of this utility model.

[0016] Figure 2 is the top view of this utility model.

[0017] Figure 3 is the left view of this utility model.

[0018] Reference numerals: 1, fixed main frame; 2, movable main frame; 21, placement frame; 22, top frame; 221, through hole; 23, connecting frame; 24, transmission shaft; 3, baffle; 4, top press; 5, side press; 6, first driver; 7, electric box; 8, bearing seat; 9, keyboard; 10, shield; 101, vertical plate; 102, horizontal plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will further describe in detail the specific embodiments of this utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate this utility model but are not used to limit the scope of this utility model.

[0020] In the description of this utility model, it should be understood that the orientation or positional relationships indicated by terms such as "top", "bottom", "inside", "outside", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this utility model.

[0021] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0022] As Figures 1 to 3 shown, a keyboard flipping device of the present utility model includes a fixed main frame 1, a movable main frame 2, a baffle 3, a plurality of top presses 4, and two side presses 5. The movable main frame 2 includes a placement frame 21, a top frame 22, a connecting frame 23, and a transmission shaft 24. The transmission shaft 24 is fixedly arranged on the placement frame 21, and the transmission shaft 24 is rotatably connected to the fixed main frame 1. The top surface of the placement frame 21 includes a placement area. The top frame 22 is spaced above the placement area. The two ends of the connecting frame 23 are respectively connected to the top frame 22 and the placement frame 21. The plurality of top presses 4 are spaced along a first direction on the top frame 22. The top press 4 can expand and contract towards the placement area to press on the top surface of the keyboard 9. The two side presses 5 are respectively arranged on both sides of the placement area along the first direction at intervals from the placement area. The baffle 3 is arranged above the placement area. The baffle 3 is used to prevent the keys of the keyboard 9 from falling. The side press 5 can move above the baffle 3 to prevent the baffle 3 from falling.

[0023] In the above technical solution, the fixed main frame 1 is fixedly arranged on the ground for installing other components. The fixed main frame 1 is rotatably connected to the placement frame 21 of the movable main frame 2 through the transmission shaft 24 to achieve the function of flipping the movable main frame 2. Further, the top frame 22 of the movable main frame 2 is spaced above the placement area of the placement frame 21. The plurality of top presses 4 are arranged on the top frame 22, and the top press 4 can expand and contract towards the placement area to press the keyboard 9 on the placement frame 21 to achieve the function of fixing the keyboard 9. Further, the baffle 3 is arranged above the placement area to block above the keys of the keyboard 9, thereby preventing the keys of the keyboard 9 from falling. The two side presses 5 are respectively arranged on both sides of the placement area along the first direction at intervals from the placement area. The side press 5 can move above the baffle 3 to block above the baffle 3, thereby preventing the baffle 3 from falling. In summary, the flipping device of the present utility model can fix the keyboard 9 on the movable main frame 2 and flip the keyboard 9 by rotating the movable main frame 2, having the effects of less manpower consumption, relatively uniform pressure on the keyboard 9, and low loss probability of the keyboard 9 during the flipping process. In addition, the power for flipping the movable main frame 2 can be manual, electric, or pneumatic.

[0024] Further, it further includes a first driver 6 and an electrical box 7. The first driver 6 and the electrical box 7 are fixedly arranged on the fixed main frame 1. The electrical box 7 is connected to the first driver 6, and the first driver 6 is connected to the transmission shaft 24 to drive the movable main frame 2 to rotate, so that the device drives the movable main frame 2 to flip in an electric manner. Among them, the first driver 6 is a motor.

[0025] Further, it further includes a gearbox. The gearbox is fixedly arranged on the fixed main frame 1. The first driver 6 is connected to the gearbox, and the gearbox is connected to the transmission shaft 24; to adjust the transmission ratio of the first driver 6.

[0026] Further, it further includes two bearing seats 8. The bearing seats 8 are fixedly arranged on the fixed main frame 1. The two bearing seats 8 are respectively located on the opposite sides of the placing frame 21 along the first direction. The transmission shaft 24 passes through the bearing bodies of the two bearing seats 8, and the transmission shaft 24 is connected to the bearing bodies of the bearing seats 8 to stably support the transmission shaft 24 through the bearing seats 8 arranged on both sides.

[0027] Further, a through traveling hole 221 is provided on the top surface of the top frame 22. The traveling hole 221 is an elongated hole extending along the first direction. The traveling hole 221 corresponds to the placing area. The top press 4 is a piston cylinder. The cylinder body of the top press 4 is installed on the top surface of the top frame 22, and the piston rod of the top press 4 passes through the traveling hole 221, so that each top press 4 can adjust its position in the first direction to obtain a better downward pressing and fixing effect; among them, the piston cylinder can be a pneumatic cylinder.

[0028] Further, the side press 5 includes a second driver, a connecting shaft and a stopper which are arranged and connected in sequence from bottom to top. The second driver can drive the stopper to rotate along the axis of the connecting shaft, so that the stopper moves above the baffle 3. The side press 5 can be a rotary cylinder or a motor.

[0029] Further, the movable main frame 2 includes two connecting frames 23. The top ends of the two connecting frames 23 are respectively connected to the two opposite side surfaces of the top frame 22 along the first direction, and the bottom ends of the connecting frames 23 are connected to the top surface of the placing frame 21 to stably fixedly connect the top frame 22 to the placing frame 21.

[0030] Further, in order to adapt to the specifications of most piano keyboards 9 for processing, the length of the fixed main frame 1 is 1600 mm to 1800 mm, the width is 900 mm to 1100 mm, the length of the movable main frame 2 is 1400 mm to 1600 mm, and the width is 700 mm to 900 mm.

[0031] Further, it further includes a baffle 10. The baffle 10 includes a vertical plate 101 and a horizontal plate 102. Both the vertical plate 101 and the horizontal plate 102 extend along the first direction. The vertical plate 101 is arranged at an interval from the placement area on the top surface of the placement rack 21. The horizontal plate 102 is arranged on the top surface of the vertical plate 101. The horizontal plate 102 is located above the placement area. When the keyboard is fixed to the placement rack 21, the baffle is located above the hammer shank to prevent the hammer shank of the keyboard 9 from falling off.

[0032] Further, the specific connection methods of fixed setting and fixed connection refer to the relative position relationship that can fix two connected components, including fixing through a connecting piece, fixing by welding, fixing by an adhesive, fixing by integral molding, and fixing by snap connection.

[0033] Further, the connecting piece includes a fastener, a strap, a binding rope, a pneumatic connection element, a hydraulic connection element, a flange plate, a magic tape, and a button.

[0034] In summary, the embodiment of the present utility model provides a keyboard flipping device, and its technical effects are as follows:

[0035] The fixed main frame 1 in the present utility model is fixedly arranged on the ground and is used for installing other components. The fixed main frame 1 is rotationally connected to the placement rack 21 of the movable main frame 2 through a transmission shaft 24 to achieve the function of flipping the movable main frame 2; further, the top frame 22 of the movable main frame 2 is arranged at an interval above the placement area of the placement rack 21. A plurality of top presses 4 are arranged on the top frame 22, and the top presses 4 can extend and retract toward the placement area to press the keyboard 9 on the placement rack 21 to achieve the function of fixing the keyboard 9; further, a baffle 3 is arranged above the placement area to block above the keys of the keyboard 9, thereby preventing the keys of the keyboard 9 from falling. Two side presses 5 are respectively arranged on both sides of the placement area at intervals along the first direction. The side presses 5 can move above the baffle 3 to block above the baffle 3, thereby preventing the baffle 3 from falling; in summary, the flipping device of the present utility model can fix the keyboard 9 on the movable main frame 2 and flip the keyboard 9 by rotating the movable main frame 2, with the effects of less labor consumption, more uniform pressure on the keyboard 9, and a low probability of loss of the keyboard 9 during the flipping process.

[0036] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A keyboard flipping device, characterized in that, It includes a fixed main frame (1), a movable main frame (2), a baffle (3), a plurality of top presses (4) and two side presses (5). The movable main frame (2) includes a placement frame (21), a top frame (22), a connecting frame (23) and a transmission shaft (24). The transmission shaft (24) is fixedly arranged on the placement frame (21), and the transmission shaft (24) is rotatably connected to the fixed main frame (1). The top surface of the placement frame (21) includes a placement area. The top frame (22) is spaced above the placement area. The two ends of the connecting frame (23) are respectively connected to the top frame (22) and the placement frame (21). A plurality of the top presses (4) are spaced along a first direction on the top frame (22). The top presses (4) can extend and retract towards the placement area to press on the top surface of the keyboard (9). The two side presses (5) are respectively arranged on both sides of the placement area along the first direction at intervals from the placement area. The baffle (3) is arranged above the placement area. The baffle (3) is used to prevent the keys of the keyboard (9) from falling off the baffle. The side presses (5) can move above the baffle (3) to prevent the baffle (3) from falling off.

2. The keyboard flipping device according to claim 1, characterized in that It further includes a first driver (6) and an electrical box (7). The first driver (6) and the electrical box (7) are fixedly arranged on the fixed main frame (1). The electrical box (7) is connected to the first driver (6). The first driver (6) is connected to the transmission shaft (24) to drive the movable main frame (2) to rotate.

3. The keyboard flipping device according to claim 2, characterized in that, It further includes a gearbox. The gearbox is fixedly arranged on the fixed main frame (1). The first driver (6) is connected to the gearbox. The gearbox is connected to the transmission shaft (24).

4. The keyboard flipping device according to claim 1, characterized in that, It further includes two bearing seats (8). The bearing seats (8) are fixedly arranged on the fixed main frame (1). The two bearing seats (8) are respectively located on opposite sides of the placement frame (21) along the first direction. The transmission shaft (24) passes through the bearing bodies of the two bearing seats (8). The transmission shaft (24) is connected to the bearing bodies of the bearing seats (8).

5. The keyboard flipping device according to claim 1, wherein, A through traveling hole (221) is provided on the top surface of the top frame (22). The traveling hole (221) is an elongated hole extending along the first direction. The traveling hole (221) corresponds to the placement area. The top press (4) is a piston cylinder. The cylinder body of the top press (4) is installed on the top surface of the top frame (22). The piston rod of the top press (4) passes through the traveling hole (221).

6. The keyboard flipping device according to claim 1, wherein The side press (5) includes a second driver, a connecting shaft and a stop block which are sequentially arranged and connected from bottom to top. The second driver can drive the stop block to rotate along the axis of the connecting shaft so that the stop block moves above the baffle (3).

7. The keyboard flipping device according to claim 1, wherein The movable main frame (2) includes two connecting frames (23). The top ends of the two connecting frames (23) are respectively connected to two opposite side surfaces of the top frame (22) along the first direction. The bottom ends of the connecting frames (23) are connected to the top surface of the placement frame (21).

8. The keyboard flipping device according to claim 1, characterized in that, The length of the fixed main frame (1) is 1600 mm to 1800 mm, and the width is 900 mm to 1100 mm. The length of the movable main frame (2) is 1400 mm to 1600 mm, and the width is 700 mm to 900 mm.

9. The keyboard flipping device according to claim 1, wherein It further includes a baffle (10). The baffle (10) includes a vertically arranged vertical plate (101) and a horizontally arranged horizontal plate (102). Both the vertical plate (101) and the horizontal plate (102) extend along the first direction. The vertical plate (101) is arranged at intervals from the placement area on the top surface of the placement rack (21). The horizontal plate (102) is arranged on the top surface of the vertical plate (101). The horizontal plate (102) is located above the placement area to prevent the hammer shanks of the keyboard (9) from falling.

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