Toggle structure of piano key switch

Abstract

The utility model discloses a toggle structure of a piano key switch, comprising a switch support, the switch support is provided with a circuit board and a toggle button, and the circuit board is electrically connected with a first microswitch and a second microswitch; the switch further comprises a bidirectional toggle mechanism arranged on one side of the circuit board, the circuit board is transversely distributed, the bidirectional toggle mechanism comprises a first swing rod and a second swing rod which are hinged to the switch support, the first swing rod is hinged to the second swing rod, the end, away from the second swing rod, of the first swing rod is in linkage connection with a toggle button, and the toggle button is in linkage connection with the circuit board. And a first pressing part and a second pressing part which are used for triggering the first microswitch and the second microswitch are respectively arranged at the positions, corresponding to the two sides of the rotating center, of the second oscillating bar. According to the utility model, through a double-swing-rod transmission mode, bidirectional operation can be realized under the condition that a single-layer circuit board is used, so that the cost is greatly saved, and the space requirement is obviously saved.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a toggle structure of a piano key switch. Background Art

[0002] For piano-key switches, achieving bidirectional operation with a dial button typically requires a vertically arranged circuit board or a two-layer circuit board. A vertically arranged circuit board requires significant height space. A two-layer circuit board, on the other hand, requires less space but requires an additional circuit board and wiring between the two boards, which is costly.

[0003] Therefore, the market needs to improve traditional piano key switches. Utility Model Content

[0004] The purpose of the utility model is to provide a toggle structure of a piano key switch. The utility model can realize bidirectional operation when using a single-layer circuit board through a double rocker transmission method, which not only greatly saves costs but also significantly saves space requirements.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a toggle structure of a piano key switch, comprising a switch bracket, a circuit board and a toggle button provided on the switch bracket, a first microswitch and a second microswitch being electrically connected to the circuit board; and a two-way toggle mechanism provided on one side of the circuit board, and the circuit board being laterally distributed, the two-way toggle mechanism comprising a first rocker arm and a second rocker arm respectively hinged on the switch bracket, and the first rocker arm and the second rocker arm being hinged, an end of the first rocker arm away from the second rocker arm being linked to the toggle button, a first pressing portion and a second pressing portion being respectively provided at positions on both sides of the rotation center of the second rocker arm, when the second rocker arm swings about a first direction, prompting the first pressing portion to toggle the first microswitch, the second pressing portion and the second microswitch are in a separated state, and when the second rocker arm swings about a second direction, prompting the second pressing portion to toggle the second microswitch, the first pressing portion and the first microswitch are in a separated state.

[0006] By adopting the above technical solution, the first swing rod and the second swing rod each have a rotation center and rotate up and down in a seesaw-like form. The first swing rod and the second swing rod are articulated and driven. When the toggle button is operated upward, the first swing rod drives the second swing rod to rotate, and the first pressing part on the second swing rod applies pressure to the first micro switch to trigger the function. When the toggle button is operated downward, the first swing rod drives the second swing rod to reverse, and the second pressing part on the second swing rod applies pressure to the second micro switch to trigger the function. Thus, two-way operation can be realized under the condition of using a single-layer circuit board, eliminating the connection wire between one circuit board and two circuit boards, greatly saving costs. At the same time, the circuit board is horizontally distributed, and the two-way toggle mechanism is arranged on one side of the circuit board. The two-way toggle mechanism can be arranged within a Z-direction space of 15 mm, saving about 9 mm of space compared with the double-layer circuit board solution, significantly saving the space requirement.

[0007] The present utility model is further configured such that the first pressing part and the second pressing part are arranged in a front-back dislocation manner.

[0008] By adopting the above technical solution, the first swing rod and the second swing rod do not interfere with each other during the swinging process, and the installation space is saved.

[0009] The present utility model is further configured such that a first pressing head for triggering the first micro switch is protrudingly arranged on the first pressing part, and a second pressing head for triggering the second micro switch is protrudingly arranged on the second pressing part.

[0010] By adopting the above technical solution, the contact area between the pressing part and the micro switch is reduced, and the cooperation is more precise.

[0011] The present utility model is further configured such that two first hinge seats and two second hinge seats are provided on the switch bracket. A first shaft hole is provided in the first hinge seat, and first rotating shafts are respectively provided on both sides of the first swing rod and are matched with the first shaft holes of the corresponding first hinge seats. A second shaft hole is provided in the second hinge seat, and second rotating shafts are respectively provided on both sides of the second swing rod and are matched with the second shaft holes of the corresponding second hinge seats.

[0012] By adopting the above technical solution, the articulated installation of the first swing rod and the second swing rod can be realized, and the installation structure is simple and reliable, and the disassembly and assembly are very convenient.

[0013] The present utility model is further configured such that a first reinforcing rib extending vertically is provided on the side of the first hinge seat, and a second reinforcing rib extending vertically is provided on the side of the second hinge seat.

[0014] By adopting the above technical solution, the strength of the first hinge seat and the second hinge seat can be improved, making them not easily break during the frequent movement of the rotating shaft, and the service life of the switch is improved.

[0015] The present invention is further configured such that an end of the first rocker arm away from the toggle button is provided with an inwardly concave opening groove, and an end of the second rocker arm close to the toggle button is provided with a follower convex portion, and the follower convex portion is rotatably arranged in the opening groove.

[0016] By adopting the above technical solution, the transmission between the first swing arm and the second swing arm is achieved through the fork structure, which has a simple structure, is easy to assemble, and has stable and reliable transmission.

[0017] The present invention is further configured such that a cylindrical fitting portion is provided at the end of the follower protrusion, and the cross-sectional diameter of the cylindrical fitting portion is greater than the thickness of the second rocker arm.

[0018] By adopting the above technical solution, the cooperation is smoother, the space for clearance is larger, and interference is less likely to occur.

[0019] The utility model is further configured as follows: the switch bracket includes a bottom plate and a side baffle, the dial button and the two-way dial mechanism are respectively arranged on both sides of the side baffle, and the side baffle is provided with a passage for the first rocker rod to pass through and be linked to the dial button.

[0020] By adopting the above technical solution, the two-way toggle mechanism is arranged on the inner side of the side baffle of the switch bracket, and the toggle button is arranged on the outer side of the side baffle of the switch bracket, which is not only easy to operate but also more beautiful in appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the main view of the entire utility model;

[0022] Figure 2 A three-dimensional diagram of the entire utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model as a whole after removing the circuit board;

[0024] Figure 4 This is a schematic structural diagram of the first swing arm of the utility model;

[0025] Figure 5 This is a schematic structural diagram of the second swing arm of the present invention.

[0026] In the figure: 1. switch bracket; 2. circuit board; 3. dial button; 4. first micro switch; 5. second micro switch; 6. first rocker arm; 7. second rocker arm; 8. first pressing part; 9. second pressing part; 10. first pressure head; 11. second pressure head; 12. first hinge seat; 13. second hinge seat; 14. first axial hole; 15. first rotating shaft; 16. second axial hole; 17. second rotating shaft; 18. first reinforcing rib; 19. second reinforcing rib; 20. opening groove; 21. follower protrusion; 22. cylindrical matching part; 23. bottom plate; 24. side baffle; 25. pass-through. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example: As shown in the attached Figures 1 to 5 The toggle structure of a piano key switch shown in the figure includes a switch bracket 1, on which a circuit board 2 and a toggle button 3 are provided, and the circuit board 2 is electrically connected to a first microswitch 4 and a second microswitch 5; the toggle switch also includes a bidirectional toggle mechanism arranged on one side of the circuit board 2, and the circuit board 2 is arranged laterally. The bidirectional toggle mechanism includes a first rocker arm 6 and a second rocker arm 7 respectively hinged on the switch bracket 1, and the first rocker arm 6 and the second rocker arm 7 are hingedly connected, and the end of the first rocker arm 6 away from the second rocker arm 7 is linked to the toggle button 3. The second rocker arm 7 is provided with a first pressing portion 8 and a second pressing portion 9 at positions on both sides of the rotation center, respectively. When the second rocker arm 7 swings about a first direction, the first pressing portion 8 is caused to toggle the first microswitch 4, and the second pressing portion 9 and the second microswitch 5 are separated. When the second rocker arm 7 swings about a second direction, the second pressing portion 9 is caused to toggle the second microswitch 5, and the first pressing portion 8 and the first microswitch 4 are separated. The first and second swing arms 6 and 7 each have a rotation center, rotating up and down like a seesaw. They are articulated. When the dial button 3 is dialed upward, the first swing arm 6 drives the second swing arm 7 to rotate, and the first pressing portion 8 on the second swing arm 7 applies pressure to the first microswitch 4, triggering the function. When the dial button 3 is dialed downward, the first swing arm 6 drives the second swing arm 7 to rotate, and the second pressing portion 9 on the second swing arm 7 applies pressure to the second microswitch 5, triggering the function. This enables bidirectional operation using a single-layer circuit board 2, eliminating the need for connecting cables between one or two circuit boards 2, significantly reducing costs. Furthermore, since the circuit boards 2 are arranged horizontally, and the bidirectional toggle mechanism is located on a single side of the circuit board 2, the bidirectional toggle mechanism can be arranged within a 15mm Z-direction space, saving approximately 9mm of space compared to a double-layer circuit board 2 solution, significantly reducing space requirements.

[0029] The first pressing portion 8 and the second pressing portion 9 are staggered in front and back. This design prevents the first swing rod 6 and the second swing rod 7 from interfering with each other during the swinging process and saves installation space.

[0030] As attached Figure 2As shown, a first pressing head 10 is provided on the first pressing portion 8 for triggering the first micro switch 4, and a second pressing head 11 is provided on the second pressing portion 9 for triggering the second micro switch 5. In this embodiment, the first pressing head 10 and the second pressing head 11 are cylindrical, but other shapes are also acceptable. This reduces the contact area between the pressing portion and the micro switch, ensuring more precise engagement.

[0031] As attached Figure 3 As shown, the switch bracket 1 is provided with two first hinged seats 12 and two second hinged seats 13. The first hinged seats 12 have first axial holes 14 formed in them. First rotating shafts 15 are provided on either side of the first rocker arm 6, respectively, to mate with the first axial holes 14 of the corresponding first hinged seats 12. The second hinged seats 13 have second axial holes 16 formed in them. Second rotating shafts 17 are provided on either side of the second rocker arm 7, respectively, to mate with the second axial holes 16 of the corresponding second hinged seats 13. The first and second axial holes 14, 16 can also be replaced with circular grooves. This design enables hinged installation of the first and second rocker arms 6, 7, and provides a simple, reliable installation structure and convenient assembly and disassembly.

[0032] As attached Figure 3 As shown, the first hinge seat 12 is provided with a first reinforcing rib 18 extending vertically on its side, and the second hinge seat 13 is provided with a second reinforcing rib 19 extending vertically on its side. Both the first and second reinforcing ribs 18 and 19 span the shaft holes of their respective hinge seats. This design enhances the strength of the first and second hinge seats 12 and 13, preventing them from breaking during frequent shaft movement and extending the service life of the switch.

[0033] As attached Figures 3 to 5 As shown, the first rocker 6 has a concave opening 20 at its end away from the toggle button 3, and the second rocker 7 has a follower protrusion 21 at its end near the toggle button 3. The follower protrusion 21 is rotatably disposed in the opening 20, forming a shift fork structure. This shift fork structure achieves transmission between the first rocker 6 and the second rocker 7, resulting in a simple structure, easy assembly, and stable and reliable transmission.

[0034] As attached Figure 5 As shown, the end of the follower protrusion 21 is provided with a cylindrical matching portion 22, and the cross-sectional diameter of the cylindrical matching portion 22 is larger than the thickness of the second rocker 7. This design makes the matching smoother and has a larger space to make room, which is less likely to cause interference.

[0035] As attached Figure 3As shown, the switch bracket 1 includes a base plate 23 and side panels 24. The toggle button 3 and the two-way toggle mechanism are respectively disposed on either side of the side panels 24. The side panels 24 are provided with a passage 25 for the first rocker rod 6 to pass through and be linked to the toggle button 3. The two-way toggle mechanism is disposed on the inner side of the side panels 24 of the switch bracket 1, while the toggle button 3 is disposed on the outer side of the side panels 24 of the switch bracket 1, which not only facilitates operation but also enhances the appearance.

Claims

1. A toggle structure for a piano key type switch, comprising a switch bracket (1), a circuit board (2) and a toggle button (3) are provided on the switch bracket (1), and a first micro switch (4) and a second micro switch (5) are electrically connected to the circuit board (2); characterized in that: The invention also includes a two-way toggle mechanism arranged on one side of the circuit board (2), and the circuit board (2) is distributed laterally. The two-way toggle mechanism includes a first swing rod (6) and a second swing rod (7) respectively hinged on the switch bracket (1), and the first swing rod (6) and the second swing rod (7) are hinged. The end of the first swing rod (6) away from the second swing rod (7) is linked to the toggle button (3). The second swing rod (7) is provided with a first pressing portion (8) and a second pressing portion (9) at positions on both sides of the corresponding rotation center. When the second swing rod (7) swings around the first direction, the first pressing portion (8) is prompted to toggle the first micro switch (4), and the second pressing portion (9) and the second micro switch (5) are in a separated state. When the second swing rod (7) swings around the second direction, the second pressing portion (9) is prompted to toggle the second micro switch (5), and the first pressing portion (8) and the first micro switch (4) are in a separated state.

2. The toggle structure of a piano key type switch according to claim 1, characterized in that: The first pressing portion (8) and the second pressing portion (9) are staggered in front and back.

3. The piano key switch toggle structure according to claim 2, characterized in that: A first pressing head (10) is provided on a protrusion of the first pressing portion (8) for triggering a first micro switch (4), and a second pressing head (11) is provided on a protrusion of the second pressing portion (9) for triggering a second micro switch (5).

4. The toggling structure of a piano key type switch according to claim 1, characterized in that: The switch bracket (1) is provided with two first hinge seats (12) and two second hinge seats (13), the first hinge seat (12) is provided with a first shaft hole (14), the first swing arm (6) is provided with a first rotating shaft (15) on both sides thereof and matched with the first shaft hole (14) of the corresponding first hinge seat (12), the second hinge seat (13) is provided with a second shaft hole (16), and the second swing arm (7) is provided with a second rotating shaft (17) on both sides thereof and matched with the second shaft hole (16) of the corresponding second hinge seat (13).

5. The toggle structure of a piano key type switch according to claim 4, characterized in that: A first reinforcing rib (18) extending vertically is provided on the side of the first hinge seat (12), and a second reinforcing rib (19) extending vertically is provided on the side of the second hinge seat (13).

6. The toggle structure of a piano key type switch according to claim 1, characterized in that: An end of the first swing rod (6) away from the dial button (3) is provided with an inwardly concave opening groove (20), and an end of the second swing rod (7) close to the dial button (3) is provided with a follower convex portion (21), and the follower convex portion (21) is rotatably arranged in the opening groove (20).

7. The toggle structure of a piano key type switch according to claim 6, characterized in that: The end of the follower protrusion (21) is provided with a columnar fitting portion (22), and the cross-sectional diameter of the columnar fitting portion (22) is greater than the thickness of the second rocker (7).

8. The toggle structure of a piano key type switch according to claim 1, characterized in that: The switch bracket (1) comprises a bottom plate (23) and a side baffle (24); the dial button (3) and the two-way dial mechanism are respectively arranged on both sides of the side baffle (24); and the side baffle (24) is provided with a passage (25) for allowing the first rocker (6) to pass through and being linked to the dial button (3).

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