Pressure test fixture for piano key strength strip
By designing the pressure test tool for the key force bar, the mechanical device is used to ensure that the 1.4kg iron rod is pressed vertically down the key, which solves the standardization problem of the electronic key force test and achieves the consistency and safety of the key pressure.
Patent Information
- Application Number
- CN202421798925.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In the prior art, the electronic piano key force test cannot be standardized due to human finger pressing, and the operation error is large, so the consistency of the key pressure cannot be guaranteed.
Design a pressure test tool for the key force bar, including a base, adjustment mechanism and fall prevention mechanism, to ensure that the 1.4kg iron rod is pressed vertically down the keys through mechanical devices, reduce operating errors, achieve consistency of the key pressure, and prevent the iron rod from falling and damaging the equipment.
The stability consistency test of key pressure is achieved, which reduces operating errors, improves the standardization and safety of the test, and avoids equipment damage.
Smart Images
Figure CN223064998U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of standard testing of key pressure strips, in particular to a pressure testing fixture for key strength strips. Background Technique
[0002] The standard testing of key strength strips usually involves detecting the key strength of electronic keyboards to ensure that they meet specific standards. However, for the key strength testing of electronic keyboards, it is usually detected by pressing with human fingers, which makes the testing non-standardized due to individual differences.
[0003] Through research and analysis, it is found that there are still the following disadvantages in the key strength testing of electronic keyboards on the market to a certain extent.
[0004] For example, a weighing rod is placed on the key to make it press down naturally. The software detects the pressure received by the strength strip and determines whether it is within the set limit range. Since it is impossible to ensure verticality when a person holds a 1.4 kg iron rod weight, the value of the strength strip will keep fluctuating, and the key pressure consistency cannot be guaranteed. The operation error of the personnel is relatively large. To solve the above technical problems, we have designed a pressure testing fixture for key strength strips. Content of the Utility Model
[0005] The purpose of the utility model is to provide a pressure testing fixture for key strength strips, which has the advantages of ensuring product consistency and anti-falling, and solves the problems that the value of the pressure strip will keep fluctuating due to the inability to ensure verticality when a person holds a 1.4 kg iron rod weight, the key pressure consistency cannot be guaranteed, and the operation error of the personnel is relatively large.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: A pressure testing fixture for key strength strips, including a base, an adjusting mechanism is installed at the rear side of the top of the base, a sliding sleeve is installed on the surface of the adjusting mechanism, an iron rod is slidably connected to the inner wall of the sliding sleeve, and an anti-falling mechanism is installed on the surface of the adjusting mechanism;
[0007] The adjusting mechanism includes a moving platform, a guide rail I, a support platform, a guide rail II and a telescopic platform. The anti-falling mechanism includes a fixed block, a round rod, a card slot, a disc, a rubber ring, a round plate, a limit bolt, a connecting plate, a connecting rod and a handle. The bottom of the fixed block is fixedly connected to the left front side of the top of the telescopic platform.
[0008] Preferably, the bottom of the moving platform is fixedly connected to the rear side of the top of the base. The number of the guide rail I is two, and they are respectively fixedly connected to the front and rear sides of the top of the moving platform. The support platform is slidably clamped on the surface of the guide rail I. The weight of the iron rod is 1.4 kg.
[0009] Preferably, the number of the second guide rails is two, and they are respectively fixedly connected to the left and right sides of the top of the support table. The telescopic platform is slidably clamped on the surface of the second guide rails, and the sliding sleeve is fixedly embedded in the front side of the top of the telescopic platform through a bolt.
[0010] Preferably, the left end of the round rod is fixedly connected to the right side of the fixed block. The disc is movably sleeved on the surface of the round rod. The left side of the round plate is fixedly connected to the right end of the round rod. The left end of the connecting rod is fixedly connected to the top of the right side of the disc. The top of the left side of the connecting plate is fixedly connected to the right end of the connecting rod.
[0011] Preferably, one end of the limit bolt slides through one side of the connecting plate. The left end of the limit bolt is fixedly connected to the right side of the round plate. One end of the handle slides through one side of the connecting plate. The clamping groove is opened on the right side of the disc and is adapted to the left end of the handle. The number of the clamping grooves is several.
[0012] Preferably, a tray is fixedly connected to the front side of the top of the base. Limit plates are fixedly connected to the left front side and the right front side of the top of the base.
[0013] Preferably, a first fixing bolt is threadedly embedded at the bottom of the inner cavity of the support table. A second fixing bolt is threadedly embedded at the rear side of the top of the telescopic platform. A reinforcing plate is fixedly connected to the rear side of the top of the base. The top of the reinforcing plate is fixedly connected to the top of the inner cavity of the moving platform.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] By placing the finished electronic piano machine on the tray, then limiting it through the limit plates, powering on for testing, pulling out the 1.4 kg iron rod weight from the telescopic platform, moving the moving platform, moving the iron rod to the required position as needed, slowly lowering the 1.4 kg iron rod weight to press on the corresponding keys of the finished machine, so that the keys obtain a stable 1.4 kg pressure, the present utility model thus has the advantages of being able to control product consistency and key pressure consistency, enabling each machine to obtain a standard pressure, reducing human operation errors, and well controlling for the consistency of product performance, so that the keys obtain standard pressure values.
[0016] The utility model moves an iron rod above the position of the key to be tested, then pulls the handle to disengage its left end from the card slot, and then rotates the handle to rotate the connecting plate, connecting rod, disc and rubber ring. Under the action of the rotation and friction of the rubber ring, the iron rod is lowered. When it contacts the key, the connecting plate, connecting rod, disc and rubber ring are moved leftward to disengage the rubber ring from the iron rod, so that the iron rod gives a stable pressure of 1.4 kg to the key. When not testing, operate in the reverse direction to fix the iron rod upward, thus having the advantage of being able to prevent falling, effectively avoiding damage caused by the iron rod falling from a high place when the hand is released during the adjustment process and impacting the finished electronic piano machine, and improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional structural schematic diagram of the utility model;
[0018] Figure 2 is a rear three-dimensional schematic diagram of the utility model;
[0019] Figure 3 is a partial cross-sectional three-dimensional schematic diagram of the anti-falling mechanism of the utility model.
[0020] In the figure: 1, base; 2, adjusting mechanism; 21, moving platform; 22, guide rail 1; 23, support platform; 24, guide rail 2; 25, telescopic platform; 3, sliding sleeve; 4, iron rod; 5, anti-falling mechanism; 51, fixing block; 52, round rod; 53, card slot; 54, disc; 55, rubber ring; 56, round plate; 57, limit bolt; 58, connecting plate; 59, connecting rod; 510, handle; 6, tray; 7, limit plate; 8, fixing bolt 1; 9, fixing bolt 2; 10, reinforcing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Please refer to Figures 1 - 3 , a pressure test fixture for a key strength bar, including a base 1, an adjusting mechanism 2 is installed at the rear side of the top of the base 1, a sliding sleeve 3 is installed on the surface of the adjusting mechanism 2, an iron rod 4 is slidably connected to the inner wall of the sliding sleeve 3, and an anti-falling mechanism 5 is installed on the surface of the adjusting mechanism 2;
[0022] The adjusting mechanism 2 includes a moving platform 21, a guide rail 1 22, a support platform 23, a guide rail 2 24 and a telescopic platform 25, and the anti-falling mechanism 5 includes a fixing block 51, a round rod 52, a card slot 53, a disc 54, a rubber ring 55, a round plate 56, a limit bolt 57, a connecting plate 58, a connecting rod 59 and a handle 510, and the bottom of the fixing block 51 is fixedly connected to the left front side of the top of the telescopic platform 25.
[0023] Please refer to Figure 1 and Figure 2, the bottom of the mobile platform 21 is fixedly connected to the rear side of the top of the base 1. The number of the first guide rails 22 is two, and they are respectively fixedly connected to the front and rear sides of the top of the mobile platform 21. By setting the first guide rails 22, the support platform 23 is guided and limited, so that the support platform 23 can move on the top of the mobile platform 21 without tilting. The support platform 23 is slidably clamped on the surface of the first guide rails 22. The weight of the iron rod 4 is 1.4 kg.
[0024] Please refer to Figure 1 and Figure 2 , the number of the second guide rails 24 is two, and they are respectively fixedly connected to the left and right sides of the top of the support platform 23. By setting the second guide rails 24, the telescopic platform 25 is guided and limited, so that the telescopic platform 25 can move on the top of the support platform 23 without tilting. The telescopic platform 25 is slidably clamped on the surface of the second guide rails 24. The sliding sleeve 3 is fixedly embedded in the front side of the top of the telescopic platform 25 through a bolt. By setting the sliding sleeve 3, the iron rod 4 is guided and limited, and it can move up and down smoothly.
[0025] Please refer to Figure 1 and Figure 3 , the left end of the round rod 52 is fixedly connected to the right side of the fixed block 51. By setting the round rod 52, the installation position of the disc 54 is provided, and the disc 54 can be guided to move on its surface. The disc 54 is movably sleeved on the surface of the round rod 52. The left side of the round plate 56 is fixedly connected to the right end of the round rod 52. By setting the round plate 56, the disc 54 is limited to prevent the disc 54 from detaching from the round rod 52. The left end of the connecting rod 59 is fixedly connected to the top of the right side of the disc 54. The top of the left side of the connecting plate 58 is fixedly connected to the right end of the connecting rod 59.
[0026] Please refer to Figure 2 and Figure 3 , one end of the limiting bolt 57 slides through one side of the connecting plate 58. By setting the limiting bolt 57, the connecting plate 58 is limited, and the connecting plate 58 can move on its surface. At the same time, rotate the handle 510 so that the connecting plate 58 and the connecting rod 59 rotate around it. The left end of the limiting bolt 57 is fixedly connected to the right side of the round plate 56. One end of the handle 510 slides through one side of the connecting plate 58. The clamping groove 53 is opened on the right side of the disc 54 and is adapted to the left end of the handle 510. By setting the clamping groove 53, the handle 510 is inserted into it to position the connecting plate 58 and the connecting rod 59, and further position the disc 54 and the rubber ring 55 so that they do not rotate. The number of the clamping grooves 53 is several.
[0027] Please refer to Figure 1 and Figure 2, a tray 6 is fixedly connected to the front side of the top of the base 1, and limit plates 7 are fixedly connected to both the left front side and the right front side of the top of the base 1. By providing the tray 6 and the limit plates 7, the finished electronic organ machine to be tested is placed and limited.
[0028] Please refer to Figure 1 and Figure 2 , a first fixing bolt 8 is threadedly inlaid and connected to the bottom of the inner cavity of the support platform 23, and a second fixing bolt 9 is threadedly inlaid and connected to the rear side of the top of the telescopic platform 25. By providing the first fixing bolt 8 and the second fixing bolt 9, the adjusted and moved support platform 23 and telescopic platform 25 are fixed. A reinforcing plate 10 is fixedly connected to the rear side of the top of the base 1. By providing the reinforcing plate 10, the moving platform 21 is supported and reinforced, and the top of the reinforcing plate 10 is fixedly connected to the top of the inner cavity of the moving platform 21.
[0029] During use, the finished electronic organ machine is placed on the tray 6, and then limited by the limit plates 7, and power is supplied for testing. The 1.4 kg iron rod 4 weight is pulled out from the telescopic platform 25, and the moving platform 21 is moved. The iron rod 4 is moved to the required position as needed, and the 1.4 kg iron rod 4 weight is slowly lowered to press on the corresponding keys of the finished machine, so that a stable 1.4 kg pressure is obtained on the keys, which can control the product consistency and the key pressure consistency, and a standard pressure is obtained for each machine. By moving the iron rod 4 above the key to be tested, then pulling the handle 510 so that its left end disengages from the card slot 53, and then rotating the handle 510 to rotate the connecting plate 58, the connecting rod 59, the disc 54 and the rubber ring 55. Under the action of the rotation and friction of the rubber ring 55, the iron rod 4 is lowered. When it contacts the key, the connecting plate 58, the connecting rod 59, the disc 54 and the rubber ring 55 are moved to the left, so that the rubber ring 55 disengages from the iron rod 4, so that the iron rod 4 gives a stable 1.4 kg pressure to the key. When not testing, operate in the reverse direction, fix the iron rod 4 in the upper position, which can effectively prevent falling and avoid damage to the finished electronic organ machine caused by the iron rod 4 falling from a high place when the hand is released during the adjustment process.
[0030] In summary: The pressure test fixture for the key strength bar, through the cooperation of the base 1, the adjustment mechanism 2, the sliding sleeve 3, the iron rod 4 and the anti-falling mechanism 5, solves the problems that the value of the pressure bar cannot be guaranteed to be vertical due to the fact that a person holds the 1.4 kg iron rod weight by hand, resulting in continuous fluctuations, the key pressure consistency cannot be guaranteed, and the operation error of the person is relatively large.
Claims
1. A pressure test fixture for a key force bar, comprising a base (1), characterized in that: An adjustment mechanism (2) is installed at the rear side of the top of the base (1). A sliding sleeve (3) is installed on the surface of the adjustment mechanism (2). An iron rod (4) is slidably connected to the inner wall of the sliding sleeve (3). A fall prevention mechanism (5) is installed on the surface of the adjustment mechanism (2). The adjustment mechanism (2) includes a moving platform (21), a first guide rail (22), a support platform (23), a second guide rail (24), and a telescopic platform (25). The fall prevention mechanism (5) includes a fixed block (51), a round rod (52), a card slot (53), a disc (54), a rubber ring (55), a round plate (56), a limit bolt (57), a connecting plate (58), a connecting rod (59), and a handle (510). The bottom of the fixed block (51) is fixedly connected to the left front side of the top of the telescopic platform (25).
2. The pressure testing fixture for the key strength bar according to claim 1, wherein: The bottom of the moving platform (21) is fixedly connected to the rear side of the top of the base (1). The number of the first guide rails (22) is two, and they are respectively fixedly connected to the front and rear sides of the top of the moving platform (21). The support platform (23) is slidably clamped on the surface of the first guide rail (22). The weight of the iron rod (4) is 1.4 kg.
3. The pressure test fixture for a key strength bar according to claim 1, characterized in that: The number of the second guide rails (24) is two, and they are respectively fixedly connected to the left and right sides of the top of the support platform (23). The telescopic platform (25) is slidably clamped on the surface of the second guide rail (24). The sliding sleeve (3) is fixedly embedded in the front side of the top of the telescopic platform (25) through a bolt.
4. The pressure testing fixture for the key strength bar according to claim 1, characterized in that: The left end of the round rod (52) is fixedly connected to the right side of the fixed block (51). The disc (54) is movably sleeved on the surface of the round rod (52). The left side of the round plate (56) is fixedly connected to the right end of the round rod (52). The left end of the connecting rod (59) is fixedly connected to the top of the right side of the disc (54). The top of the left side of the connecting plate (58) is fixedly connected to the right end of the connecting rod (59).
5. The pressure test fixture for the key strength bar according to claim 1, wherein: One end of the limit bolt (57) slidably penetrates through one side of the connecting plate (58). The left end of the limit bolt (57) is fixedly connected to the right side of the round plate (56). One end of the handle (510) slidably penetrates through one side of the connecting plate (58). The card slot (53) is opened on the right side of the disc (54) and is adapted to the left end of the handle (510). The number of the card slots (53) is several.
6. The pressure test fixture for the key strength bar according to claim 1, characterized in that: A tray (6) is fixedly connected to the front side of the top of the base (1). Limit plates (7) are fixedly connected to both the left front side and the right front side of the top of the base (1).
7. The pressure testing fixture for the key strength bar according to claim 1, characterized in that: A first fixing bolt (8) is threadedly embedded at the bottom of the inner cavity of the support platform (23). A second fixing bolt (9) is threadedly embedded at the rear side of the top of the telescopic platform (25). A reinforcing plate (10) is fixedly connected to the rear side of the top of the base (1). The top of the reinforcing plate (10) is fixedly connected to the top of the inner cavity of the moving platform (21).