Reinforced vertical piano key cover fixing hinge assembly
By adding a fixing block and a locking block structure to the hinge assembly of the upright piano key cover, multiple screw countersunk holes are used to fasten the key cover, and a locking design of U-shaped pin and soft-close mechanism pivot pin is used to solve the problem of splitting caused by excessive torque during the key cover flipping process, thus achieving higher fastening and stability.
Patent Information
- Application Number
- CN202423269093.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing hinge assembly for fixing the key cover of an upright piano is prone to cracking due to excessive torque during the flipping process, indicating insufficient fastening.
Adding a fixing block and a locking block structure to the fixed hinge, which is fastened to the key cover through multiple screw countersunk holes, combined with the locking design of the U-shaped pin and the damper pivot pin, enhances friction and fastness.
This effectively avoids the problem of the key cover splitting due to excessive torque during the flipping process, and improves the tightness and stability of the fixed hinge and the key cover.
Smart Images
Figure CN223956272U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to piano technical field especially relates to a reinforced upright piano key cover fixed hinge assembly. BACKGROUND
[0002] Piano key cover is the important component of piano, refers to the cover on the keyboard (contains black key and white key), the main function is to protect the keyboard from dust, sunlight etc. pollution and damage, also helps to keep the piano keyboard clean and beautiful, is usually called as "key cover" in the piano manufacturing process, and the key cover is generally connected through the hinge assembly and the body hinge connection;
[0003] The existing upright piano key cover fixed hinge assembly only has two parts of fixed hinge and clamping block, is fastened in the left and right sides of the key cover by using self-tapping screw, the key cover will produce great torsion to the fixed hinge in the process of turning over, since the self-tapping screw is fixed in the side of the key cover, the side of the key cover has small nail holding force, and the key cover is easy to split, therefore, the utility model provides a reinforced upright piano key cover fixed hinge assembly to solve the problems in the prior art. UTILITY MODEL CONTENTS
[0004] In view of the above problems, the utility model provides a reinforced upright piano key cover fixed hinge assembly, the reinforced upright piano key cover fixed hinge assembly can effectively strengthen the fastening of the fixed hinge and the key cover, and avoid the problem that the key cover is split due to too large torsion in the turning over process.
[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a reinforced upright piano key cover fixed hinge assembly, including fixed hinge, fixed block and clamping block, the upper end of the fixed hinge is equipped with U-shaped pin hole, the lower side of one side of the fixed hinge is equipped with side plate, and the first screw counterbore is arranged on the side plate;
[0006] The fixed block is arranged below the front side of the fixed hinge, and the second screw counterbore is arranged on the fixed block, and the clamping block is hingedly connected to one end above the front side of the fixed hinge.
[0007] Further improvement lies in that: one end above the front side of the fixed hinge is equipped with hinge shaft, and the clamping block is rotatably connected to the hinge shaft.
[0008] Further improvement lies in that: the lower end of the clamping block is equipped with rubber sleeve, and the upper side of the inside of the clamping block is equipped with inner convex point, and the inner convex point protrudes from the rear side of the clamping block.
[0009] Further improvement lies in that: the U-shaped pin hole is matched with the slow descending device rotating shaft pin, the upper end of the clamping block is a hook body, and the hook body is used for locking the slow descending device rotating shaft pin.
[0010] Further improvement lies in that the first screw hole is provided with at least three groups, and the side plate is fixed with the side of the key cover through the first screw hole and self-tapping screw.
[0011] Further improvement lies in that the second screw hole is provided with at least one group, and the fixed block is fixed with the front surface of the key cover through the second screw hole and self-tapping screw.
[0012] Further improvement lies in that a through hole is arranged on the fixed hinge at the position of the fixed block, and the rear side of the fixed block is inserted into the through hole and fixed with the fixed hinge through welding.
[0013] The piano key cover has the advantages that:
[0014] 1. The piano key cover has the advantages that:
[0015] 2. The U-shaped pin hole at the upper end of the fixed hinge is used for assembling to the slow descending device rotating shaft pin, the hook body at the upper end is locked with the slow descending device rotating shaft pin through rotating the clamping block, the locking purpose is achieved, the inner convex point in the clamping block extrudes the front side of the fixed hinge, the friction force is increased, and the clamping block is prevented from being loosened by mistake. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a front view of the piano key cover;
[0017] Figure 2 is a side view of the piano key cover;
[0018] Figure 3 is a top view of the piano key cover;
[0019] Figure 4 is a slow descending device rotating shaft pin installation schematic view of the piano key cover.
[0020] Wherein: 1, fixed hinge; 2, fixed block; 3, clamping block; 4, U-shaped pin hole; 5, side plate; 6, first screw hole; 7, second screw hole; 8, hinge shaft; 9, rubber sleeve; 10, inner convex point; 11, slow descending device rotating shaft pin. DETAILED DESCRIPTION
[0021] In order to deepen the understanding of the piano key cover, the piano key cover will be further described in combination with the embodiments below, and the embodiments are only used for explaining the piano key cover and do not constitute a limitation on the protection scope of the piano key cover.
[0022] Embodiment one
[0023] According to Figure 1 , 2 , 3, 4, the embodiment provides a reinforced upright piano key cover fixed hinge assembly, which comprises a fixed hinge 1, a fixed block 2 and a clamping block 3, the upper end of the fixed hinge 1 is provided with a U-shaped pin hole 4, the lower side of one side of the fixed hinge 1 is provided with a side plate 5, and the first screw counterbore 6 is arranged on the side plate 5.
[0024] The fixed block 2 is arranged below the front side of the fixed hinge 1, and the second screw counterbore 7 is arranged on the fixed block 2, and one end of the clamping block 3 is hingedly connected above the front side of the fixed hinge 1. When in use, the fixed block 2 is added to the fixed hinge 1, and the second screw counterbore 7 is arranged, the fixed block 2 is fastened by cooperating with the self-tapping screw through the second screw counterbore 7 from the front of the key cover, and the fixed hinge 1 is fastened with the side of the key cover by cooperating with the self-tapping screw through the side plate 5 and the first screw counterbore 6, so that the fastening of the fixed hinge 1 and the key cover can be effectively strengthened, and the problem that the key cover is split due to excessive torsion during the turning process of the piano key cover is avoided.
[0025] One end of the front side of the fixed hinge 1 is provided with a hinge shaft 8, the clamping block 3 is rotatably connected to the hinge shaft 8, and the rotation is flexible. The lower end of the clamping block 3 is provided with a rubber sleeve 9, and the upper side of the inside of the clamping block 3 is provided with an inner protrusion 10, and the inner protrusion 10 protrudes from the rear side of the clamping block 3. The U-shaped pin hole 4 is matched with a slow descending device rotating shaft pin 11, and the upper end of the clamping block 3 is a hook body, and the hook body is used for locking the slow descending device rotating shaft pin 11. When in use, the angle of the left and right fixed hinges 1 is adjusted, so that the U-shaped pin hole 4 is completely matched with the slow descending device rotating shaft pin 11. The key cover is assembled to the piano body, the U-shaped pin hole 4 of the fixed hinge 1 is completely inserted into the slow descending device rotating shaft pin 11, then the position of the rubber sleeve 9 is operated to rotate the clamping block 3, so that the hook body at the upper end locks the slow descending device rotating shaft pin 11, and the purpose of locking is achieved, the front side of the fixed hinge 1 is extruded by the inner protrusion 10 in the clamping block 3, the friction is increased, and the clamping block 3 is prevented from being loosened by mistake.
[0026] Embodiment two
[0027] According to Figure 1 , 2 , 3, 4, the embodiment provides a reinforced upright piano key cover fixed hinge assembly, which comprises a fixed hinge 1, a fixed block 2 and a clamping block 3, the upper end of the fixed hinge 1 is provided with a U-shaped pin hole 4, the lower side of one side of the fixed hinge 1 is provided with a side plate 5, and the first screw counterbore 6 is arranged on the side plate 5.
[0028] The fixed block 2 is arranged below the front side of the fixed hinge 1, and the second screw hole 7 is arranged on the fixed block 2, and the clamping block 3 is hinged to one end of the upper side of the fixed hinge 1. In use, the fixed block 2 is added to the fixed hinge 1, and the second screw hole 7 is arranged, the fixed block 2 is fastened by the self-tapping screw through the second screw hole 7 from the front side of the key cover, and the fixed hinge 1 is fastened by the self-tapping screw through the side plate 5 and the first screw hole 6 to the side of the key cover, so that the fastening of the fixed hinge 1 and the key cover is effectively strengthened, and the problem that the key cover is split due to excessive torsion during the turning process is avoided.
[0029] The first screw hole 6 is arranged in three groups, the side plate 5 is fixed to the side of the key cover by the self-tapping screw through the first screw hole 6. The second screw hole 7 is arranged in one group, and the fixed block 2 is fixed to the front side of the key cover by the self-tapping screw through the second screw hole 7. According to the shape of the lower end of the fixed hinge 1, the recess for installing the fixed hinge is pre-processed on the left and right sides of the key cover, and the depth is slightly larger than the thickness of the fixed hinge 1, so that the fixed hinge 1 does not exceed the edge of the key cover after installation, and the piano side wall is not worn. Then, the self-tapping screw with appropriate length and diameter is used to pass through the first screw hole 6 and fasten to the left and right sides of the key cover; similarly, the self-tapping screw with appropriate length and diameter is used to pass through the second screw hole 7 of the fixed block 2, and the fixed block 2 is fastened to the front side of the key cover, further strengthening the fastening between the fixed hinge 1 and the key cover.
[0030] The fixed hinge 1 at the position of the fixed block 2 is provided with a through hole, and the rear side of the fixed block 2 is inserted into the through hole and fixed to the fixed hinge 1 by welding. At the corresponding position of the fixed hinge 1, a rectangular through hole is processed according to the outer dimension of the fixed block 2; the right angle edge of the fixed block 2 is inserted into the through hole, and the fixed hinge 1 is connected by welding.
[0031] The reinforced upright piano key cover fixed hinge assembly adds a fixed block 2 to the fixed hinge 1, and sets a second screw hole 7, the fixed block 2 is fastened by the self-tapping screw through the second screw hole 7 from the front side of the key cover, and the fixed hinge 1 is fastened by the self-tapping screw through the side plate 5 and the first screw hole 6 to the side of the key cover, so that the fastening of the fixed hinge 1 and the key cover is effectively strengthened, and the problem that the key cover is split due to excessive torsion during the turning process is avoided. At the same time, the U-shaped pin hole 4 at the upper end of the fixed hinge 1 is used to assemble to the slow descending device rotating shaft pin 11, the upper end of the hook body is locked to the slow descending device rotating shaft pin 11 by rotating the clamping block 3, so as to achieve the purpose of locking, and the friction force is increased by extruding the front side of the fixed hinge 1 by the inner convex point 10 in the clamping block 3, so as to avoid the clamping block 3 from being loosened by mistake.
[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A reinforced upright piano key cover fixing hinge assembly, comprising a fixing hinge (1), a fixing block (2), and a locking block (3), characterized in that: The upper end of the fixed hinge (1) is provided with a U-shaped pin (4), and a side plate (5) is provided on the lower side of one side of the fixed hinge (1), and a first screw countersunk hole (6) is provided on the side plate (5). The fixing block (2) is located below the front side of the fixing hinge (1), and the fixing block (2) is provided with a second screw countersunk hole (7). The locking block (3) is hinged to one end above the front side of the fixing hinge (1).
2. The reinforced upright piano key cover fixing hinge assembly according to claim 1, characterized in that: The fixed hinge (1) has a hinge shaft (8) at one end on the upper front side, and the locking block (3) is rotatably connected to the hinge shaft (8).
3. The reinforced upright piano key cover fixing hinge assembly according to claim 2, characterized in that: The lower end of the card block (3) is provided with a rubber sleeve (9), and the upper part of the inside of the card block (3) is provided with an inner protrusion (10), which protrudes from the rear side of the card block (3).
4. The reinforced upright piano key cover fixing hinge assembly according to claim 3, characterized in that: The U-shaped pin (4) is adapted to the decelerator pivot pin (11), and the upper end of the locking block (3) is a hook, which is used to lock the decelerator pivot pin (11).
5. A reinforced upright piano key cover fixing hinge assembly according to claim 1, characterized in that: The first screw countersunk hole (6) has at least three sets, and the side plate (5) is fixed to the side of the key cover by the first screw countersunk hole (6) and the self-tapping screw.
6. The reinforced upright piano key cover fixing hinge assembly according to claim 1, characterized in that: The second screw countersunk hole (7) is provided with at least one set, and the fixing block (2) is fixed to the front of the key cover by the self-tapping screw through the second screw countersunk hole (7).
7. A reinforced upright piano key cover fixing hinge assembly according to claim 1, characterized in that: The fixed hinge (1) at the location of the fixed block (2) has a through hole, and the rear side of the fixed block (2) is inserted into the through hole and fixed to the fixed hinge (1) by welding.