A new type of key side wood sliding device

Abstract

The utility model provides a novel key side wood sliding device, including a sliding block, a limit pin is fixedly installed on the top of the sliding block, a roller groove is processed in the middle of the bottom end of the sliding block, a horizontally arranged pin hole is processed at the position where the roller groove is located, a cylindrical pin is installed inside the pin hole, a guide wheel is rotatably installed on the cylindrical pin through a bearing, and the guide wheel is located inside the roller groove. This sliding device uses a guide wheel to replace the traditional nylon guide block, and then replaces the traditional sliding by rolling, which reduces the friction in the sliding process, avoids excessive wear, improves the stability and wear resistance of the keyboard's reciprocating translation movement, and reduces the later noise.

Description

Technical Field

[0001] The utility model relates to the technical field of pianos, in particular to a novel key side wood sliding device. Background Art

[0002] At present, the domestic piano key side wood sliding device uses a small-diameter screw to limit the adjustment of the nylon guide block on the metal guide plate to move up and down to press the keyboard guide pin, which has low strength and insufficient rigidity. When the keyboard repeatedly moves horizontally, the U-shaped bracket of the nylon guide block has a large contact area with the keyboard guide pin and has large friction resistance. As time changes, it is easy to wear and produce gaps, and looseness and noise will occur later. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a new key side wooden sliding device, which adopts guide wheels to replace traditional nylon guide blocks, and then replaces traditional sliding by rolling, thereby reducing friction during sliding, avoiding excessive wear, improving the stability and wear resistance of the keyboard's reciprocating translational motion, and reducing late noise.

[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is achieved as follows: a new type of key side wood sliding device, comprising a sliding block, a limit pin is fixedly installed on the top of the sliding block, a roller groove is processed in the middle of the bottom end of the sliding block, and a transversely arranged pin hole is processed at the position where the roller groove is located, a cylindrical pin is installed inside the pin hole, and a guide wheel is rotatably installed on the cylindrical pin through a bearing, and the guide wheel is located inside the roller groove.

[0005] The limiting pin comprises a top pin column, a through hole is processed on the top pin column, a threaded column is arranged at the bottom end of the top pin column, and the threaded column is matched and connected with a threaded hole processed at the top center of the sliding block.

[0006] The bottom of the sliding block is symmetrically processed with U-shaped grooves on both sides of the roller groove.

[0007] The outer surface of the guide wheel is processed with an arc groove with a radius of R, and the central part of the guide wheel is processed with a stepped hole for positioning and installing the bearing.

[0008] One end of the cylindrical pin is provided with straight knurling.

[0009] The bearings are ultra-miniature standard bearings.

[0010] The utility model has the following beneficial effects:

[0011] 1. The head of the limit pin of the key side wooden sliding device of the utility model is provided with a through hole, which is convenient for the matching tool to penetrate into the hole and rotate and adjust.

[0012] 2. The upper end of the sliding block of the utility model is provided with a coarse internal thread and a limit pin to form a spiral auxiliary structure, which has good rigidity and high strength.

[0013] 3. One end of the cylindrical pin of the utility model is provided with straight knurling, which has a simple structure and is easy to install and disassemble.

[0014] 4. The utility model bearing is equipped with a special miniature standard bearing, which is small in size, light in weight, high in precision, long in service life and low in noise.

[0015] 5. The guide wheel of the utility model is provided with an R arc which matches the arc of the keyboard guide pin and after the bearing is assembled, the contact friction pair between the keyboard reciprocating translation guide wheel and the guide pin is rolling friction, with small friction resistance and high positioning accuracy.

[0016] 6. The limit pin of the utility model is assembled at the center high position on the key side wood according to the sliding block, and rotates up and down to fit the top of the installation groove, forming upper and lower force-bearing structures to press the keyboard guide pin to prevent axial movement, thereby improving the stability and wear resistance of the keyboard's reciprocating translation movement and reducing later noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is the front view of the utility model.

[0019] Figure 2 It is the main sectional view of the utility model.

[0020] In the figure: limit pin 1, sliding block 2, guide wheel 3, cylindrical pin 4, bearing 5;

[0021] Through hole 101, top pin 102, threaded column 103;

[0022] Roller groove 201, threaded hole 202, pin hole 203, U-shaped groove 204;

[0023] Arc groove 301, stepped hole 302;

[0024] Straight knurling 401. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0026] See also Figure 1-2A novel key side wood sliding device comprises a sliding block 2, a limit pin 1 is fixedly installed on the top of the sliding block 2, a roller groove 201 is processed in the middle of the bottom end of the sliding block 2, a horizontally arranged pin hole 203 is processed at the position where the roller groove 201 is located, a cylindrical pin 4 is installed inside the pin hole 203, a guide wheel 3 is rotatably installed on the cylindrical pin 4 through a bearing 5, and the guide wheel 3 is located inside the roller groove 201. This sliding device uses a guide wheel to replace the traditional nylon guide block, and then replaces the traditional sliding by rolling, which reduces the friction in the sliding process, avoids excessive wear, improves the stability and wear resistance of the keyboard's reciprocating translation movement, and reduces the later noise.

[0027] Furthermore, the limit pin 1 includes a top pin 102, a through hole 101 is machined on the top pin 102, a threaded column 103 is arranged at the bottom end of the top pin 102, and the threaded column 103 is connected with the threaded hole 202 machined at the top center of the sliding block 2. The limit pin 1 is convenient for the matching tool to be inserted into the hole for rotation adjustment; the coarse threaded hole 202 is arranged at the upper end of the sliding block 2, and the limit pin 1 forms a spiral substructure, which has good rigidity and high strength.

[0028] Furthermore, the bottom of the sliding block 2 is symmetrically processed with U-shaped grooves 204 on both sides of the roller groove 201. By adopting the above-mentioned U-shaped grooves 204, it is convenient to form a clearance groove.

[0029] Furthermore, the outer surface of the guide wheel 3 is processed with an arc groove 301 with a radius of R, and the central part of the guide wheel 3 is processed with a stepped hole 302 for positioning and installing the bearing 5. The guide wheel 3 is conveniently provided with an arc R that matches the arc of the keyboard guide pin and after the bearing 5 is assembled, the contact friction pair between the keyboard reciprocating translation guide wheel 3 and the guide pin is rolling friction, with small friction resistance and high positioning accuracy.

[0030] Furthermore, one end of the cylindrical pin 4 is provided with a straight knurling 401. The straight knurling 401 has a simple structure and is easy to install and disassemble.

[0031] Furthermore, the bearing 5 adopts a micro standard bearing. The bearing is small in size, light in weight, high in precision, long in service life and low in noise. The bearing 5 supports the guide wheel 3 in rotation, thus ensuring the smooth rotation of the guide wheel 3.

[0032] The specific working process and principle of this utility model:

[0033] During the specific installation process, the bearing 5 is first positioned and installed inside the stepped hole 302 of the guide wheel 3, then the guide wheel 3 is set in the roller groove 201, and the cylindrical pin 4 is passed through the pin hole 203 and the bearing 5 to complete the positioning and installation of the guide wheel 3, and finally, the limit pin 1 is installed on the top of the sliding block 2.

[0034] The head of the limit pin 1 of the key side wood sliding device of the utility model is provided with a through hole, which is convenient for the matching tool to penetrate into the hole for rotation and adjustment; the upper end of the sliding block 2 is provided with a coarse-pitch internal thread to form a spiral pair structure with the limit pin 1, which has good rigidity and high strength; one end of the cylindrical pin 4 is provided with a straight knurling, which has a simple structure and is easy to install and disassemble; the bearing 5 is provided with a special miniature standard bearing, which is small in size, light in weight, high in precision, long in service life and low in noise; the guide wheel 3 is provided with an R arc that matches the arc of the keyboard guide pin and after being assembled with the bearing 5, the contact friction pair between the keyboard reciprocating translation guide wheel 3 and the guide pin is rolling friction, with small friction resistance and high positioning accuracy; the limit pin 1 is assembled at the center high position on the key side wood according to the sliding block 2, and is rotated up and down to fit the top of the installation groove, forming upper and lower force-bearing structures to press the keyboard guide pin to prevent axial movement, thereby improving the stability and wear resistance of the keyboard reciprocating translation movement and reducing late noise.

Claims

1. A new type of key side wood sliding device, characterized in that: The invention comprises a sliding block (2), wherein a limit pin (1) is fixedly mounted on the top of the sliding block (2), a roller groove (201) is processed in the middle of the bottom end of the sliding block (2), a transversely arranged pin hole (203) is processed at the location where the roller groove (201) is located, a cylindrical pin (4) is installed inside the pin hole (203), a guide wheel (3) is rotatably mounted on the cylindrical pin (4) via a bearing (5), and the guide wheel (3) is located inside the roller groove (201).

2. According to claim 1, a new type of key side wood sliding device is characterized in that: The limiting pin (1) comprises a top pin (102), a through hole (101) is machined on the top pin (102), a threaded column (103) is arranged at the bottom end of the top pin (102), and the threaded column (103) is matched and connected with a threaded hole (202) machined at the top center of the sliding block (2).

3. According to claim 1, a new type of key side wood sliding device is characterized in that: U-shaped grooves (204) are symmetrically processed at the bottom of the sliding block (2) and on both sides of the roller groove (201).

4. According to claim 1, a new type of key side wood sliding device is characterized in that: The outer surface of the guide wheel (3) is machined with an arc groove (301) with a radius R, and the central portion of the guide wheel (3) is machined with a stepped hole (302) for positioning and installing the bearing (5).

5. According to claim 1, the novel key side wood sliding device is characterized in that: One end of the cylindrical pin (4) is provided with a straight knurling (401).

6. According to claim 1, a new type of key side wood sliding device is characterized in that: The bearing (5) is a special miniature standard bearing.

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