Torsion spring reset structure for balance frame

Abstract

A torsion spring reset structure for a balance frame, the torsion spring reset structure comprising a torsion spring (1), a fixing plate (2) and a balance frame (3), wherein the torsion spring (1) is arranged between the balance frame (3) and the fixing plate (2); and the torsion spring (1) comprises first elastic rods (11), second elastic rods (12) and torsion spring fixing portions (13), the first elastic rods (11) abutting against the fixing plate (2), the second elastic rods (12) abutting against the balance frame (3), and the torsion spring fixing portions (13) and the balance frame (3) being hinged to each other and interfering with each other. While enabling stable pressing, the torsion spring reset structure for the balance frame can also simplify a keyboard structure, thereby improving production efficiency, reducing the cost, and facilitating large-scale production.

Description

A torsion spring reset structure for a balance bracket Technical Field

[0001] The utility model relates to the field of keyboard key switches, in particular to a torsion spring reset structure for a balance bracket. Background Art

[0002] In the existing key switches, in order to achieve a smooth pressing function, a balance bracket structure is often provided. At the same time, the existing balance bracket structure is often arranged inside the key switch, with a complex structure, complex production process, high cost and low production efficiency. Content of the Utility Model

[0003] Aiming at the above deficiencies, the purpose of the utility model is to provide a torsion spring reset structure for a balance bracket, which can simplify the keyboard structure, improve the production efficiency, reduce the cost and facilitate mass production while achieving smooth pressing.

[0004] The technical solution adopted by the utility model to achieve the above purpose is as follows:

[0005] A torsion spring reset structure for a balance bracket, comprising a torsion spring, a fixing plate and a balance bracket, characterized in that: the torsion spring is arranged between the balance bracket and the fixing plate, the torsion spring includes a first elastic rod, a second elastic rod and a torsion spring fixing part, the first elastic rod abuts against the fixing plate, the second elastic rod abuts against the balance bracket, and the torsion spring fixing part is hinged with the balance bracket and interferes with each other.

[0006] As a further improvement of the utility model, two first connecting blocks and two second connecting blocks are arranged on the upper surface of the fixing plate, a side rotation groove is formed on the side of each of the two first connecting blocks, and a rotation hole is formed on each of the two second connecting blocks.

[0007] As a further improvement of the utility model, the balance bracket includes a first balance rod and a second balance rod. [[ID=二十九]]

[0008] As a further improvement of the utility model, the first balance rod is integrally in a U-shaped structure, the first balance rod includes a first cross bar, a first vertical bar vertically connected to one end of the first cross bar, and a second vertical bar vertically connected to the other end of the first cross bar. A first rotation shaft facing outward is arranged at the end of each of the first vertical bar and the second vertical bar, and two second rotation shafts are formed on the first cross bar. The first rotation shaft is movably clamped in the side rotation groove of the fixing plate.

[0009] As a further improvement of the present invention, the second balance bar is an overall U-shaped structure, and the second balance bar includes a second cross bar, a third vertical bar vertically connected to one end of the second cross bar, a fourth vertical bar vertically connected to the other end of the second cross bar, and a third cross bar connected between the third vertical bar and the fourth vertical bar. A third rotating shaft is respectively provided outward at both ends of the second cross bar, and a fourth rotating shaft is respectively provided outward at both ends of the third cross bar. The fourth rotating shaft is movably inserted into the rotating hole of the fixed plate.

[0010] As a further improvement of the present invention, a connecting rotation hole is respectively provided on the inner side of the first vertical rod and the second vertical rod; and a connecting shaft movably inserted into the connecting rotation hole is respectively provided on the outer side of the third vertical rod and the second vertical rod.

[0011] As a further improvement of the present invention, the torsion spring is in a V-shaped structure as a whole.

[0012] As a further improvement of the present invention, the first elastic rod includes a first lower elastic rod and a second lower elastic rod, and the first lower elastic rod and the second lower elastic rod are respectively abutted against the fixed plate; the second elastic rod includes a first upper elastic rod, a second upper elastic rod and a third upper elastic rod, and the first upper elastic rod is respectively perpendicular to the second upper elastic rod and the third upper elastic rod.

[0013] As a further improvement of the present invention, the first upper elastic rod abuts against the lower end of the second horizontal rod, the second upper elastic rod abuts against the lower end of the third vertical rod, and the third upper elastic rod abuts against the lower end of the fourth vertical rod.

[0014] As a further improvement of the present invention, the first upper elastic rod abuts against the lower end of the first horizontal rod, the second upper elastic rod abuts against the lower end of the first vertical rod, and the third upper elastic rod abuts against the lower end of the second vertical rod.

[0015] As a further improvement of the present invention, the first upper elastic rod is connected to the second upper elastic rod and the third upper elastic rod as a whole.

[0016] As a further improvement of the present invention, the torsion spring fixing portion is rotatably connected to the connecting shaft.

[0017] The beneficial effects of the utility model are:

[0018] (1) By setting a reset torsion spring between the balance bar and the fixed plate, the two balance bars of the balance frame are divided into the first balance bar and the second balance bar, which effectively reduces the jamming of the balance bar, reduces the failure rate, and increases the service life of the key switch.

[0019] (2) The balance frame no longer needs to be fixed on the base of the keyboard switch, but is fixed on the fixed plate, which can be easily matched with various types of keyboard switches. There is no need to set up a balance frame inside the narrow switch, which reduces production costs and improves production efficiency.

[0020] The above is an overview of the technical solution of the utility model. The utility model will be further explained below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is an overall schematic diagram of Example 1;

[0022] Figure 2 is a schematic structural diagram of a fixed plate;

[0023] FIG3 is a schematic structural diagram of a gimbal;

[0024] Figure 4 is a schematic structural diagram of a torsion spring;

[0025] FIG5 is a back view of the torsion spring on the second balance bar in Example 1;

[0026] In the figure: 1. torsion spring; 11. first elastic rod; 111. first lower elastic rod; 112. second lower elastic rod; 12. second elastic rod; 121. first upper elastic rod; 122. second upper elastic rod; 123. third upper elastic rod; 13. torsion spring fixing portion; 2. fixing plate; 21. first connecting block; 211. side rotation groove; 22. second connecting block; 221. rotation hole; 3. balancing frame; 31. first balancing rod; 311. first transverse rod; 312. first vertical rod; 313. second vertical rod; 314. first rotation axis; 315. second rotation axis; 316. connecting rotation hole; 32. second balancing rod; 321. second transverse rod; 322. third vertical rod; 323. fourth vertical rod; 324. third transverse rod; 325. third rotation axis; 326. fourth rotation axis; 327. connecting rotation axis; DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0028] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0030] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] Example 1

[0032] Referring to Figures 1 to 5, an embodiment of the present invention provides a torsion spring 1 reset structure for a balance frame 3, comprising a torsion spring 1, a fixed plate 2, and a balance frame 3. The torsion spring 1 is disposed between the balance frame 3 and the fixed plate 2. The torsion spring 1 comprises a first elastic rod 11, a second elastic rod 12, and a fixed portion of the torsion spring 1. The first elastic rod 11 abuts the fixed plate 2, the second elastic rod 12 abuts the balance frame 3, and the fixed portion of the torsion spring 1 and the balance frame 3 are hingedly connected and interfere with each other. When a key switch is pressed downward, the balance frame 3 is forced downward to press the second elastic rod 12 of the torsion spring 1 downward, causing the torsion spring 1 to deform. When the key switch is released, the torsion spring 1 abuts the fixed plate 2 due to the first elastic rod 11, and the fixed portion of the torsion spring 1 is hingedly connected to the balance frame 3, thereby pushing the balance frame 3 upward under its own elastic restoring force to achieve the purpose of reset. The torsion spring 1 has a quick response speed, a long service life, and a low price, which effectively reduces the production cost of the key switch and improves the practicality of the key switch. The balance frame 3 provides a balancing force for pressing, so that when the key switch is pressed, the entire decoupling strand can be pressed down smoothly, realizing the function of balanced pressing. In addition, the balance frame 3 no longer needs to be fixed to the base of the keyboard switch, but is fixed to the fixed plate 2, which can be easily matched with various models of keyboard switches. There is no need to set the balance frame 3 inside the narrow switch, which reduces production costs and improves production efficiency. While achieving smooth pressing, it can also simplify the keyboard structure, improve production efficiency, reduce costs, and facilitate large-scale production.

[0033] As for the specific structural setting of the fixing plate 2, as shown in Figure 2, two first connecting blocks 21 and two second connecting blocks 22 are provided on the upper surface of the fixing plate 2, and a side rotation groove 211 is formed on the side of the two first connecting blocks 21, and a rotation hole 221 is formed on the two second connecting blocks 22.

[0034] Regarding the specific structural arrangement of the balance frame 3 , as shown in FIG3 , the balance frame 3 includes a first balance bar 31 and a second balance bar 32 , and the first balance frame 31 and the second balance bar 32 are rotatably connected.

[0035] As for the specific structural setting of the first balance bar 31, as shown in Figure 3, the first balance bar 31 is an overall U-shaped structure, and the first balance bar 31 includes a first cross bar 311, a first vertical bar 312 vertically connected to one end of the first cross bar 311, and a second vertical bar 313 vertically connected to the other end of the first cross bar 311. A first rotating shaft 314 facing outward is respectively provided at the end of the first vertical bar 312 and the second vertical bar 313, and two second rotating shafts 315 are formed on the first cross bar 311. The first rotating shaft 314 is movably inserted into the side rotating groove 211 of the fixed plate 2. The movably inserted manner is that the first rotating shaft 314 can rotate in the lower side rotating groove 211, and can also be disengaged from the lower side rotating groove 211 and move laterally.

[0036] As for the specific structural setting of the second balance bar 32, as shown in Figure 3, the second balance bar 32 is an overall U-shaped structure, and the second balance bar 32 includes a second cross bar 321, a third vertical bar 322 vertically connected to one end of the second cross bar 321, a fourth vertical bar 323 vertically connected to the other end of the second cross bar 321, and a third cross bar 324 connected between the third vertical bar 322 and the fourth vertical bar 323. A third rotating shaft 325 is respectively provided outwardly at both ends of the second cross bar 321, and a fourth rotating shaft 326 is respectively provided outwardly at both ends of the third cross bar 324. The fourth rotating shaft 326 is movably inserted into the rotating hole 221 of the fixed plate 2. Due to the circular and closed structure of the rotating hole 221, the fourth rotating shaft 326 can only rotate in the rotating hole 221 and will not fall out of the rotating hole 221 and move laterally.

[0037] As shown in FIG3 , the first and second balance bars 31 and 32 are specifically connected. A connecting hole 316 is defined on the inner side of each of the first and second vertical bars 312 and 313. A connecting shaft 327 is provided on the outer side of each of the third and second vertical bars 322 and 313, respectively, which engages movably within the connecting hole 316. The connecting shaft 327 engages movably within the connecting hole 316, thereby connecting the first and second balance bars 31 and 32. This provides a balanced pressing force, ensuring a smooth downward movement of the entire key switch and achieving a balanced pressing function.

[0038] Regarding the specific structural arrangement of the torsion spring 1 , as shown in FIG4 , the torsion spring 1 is in a V-shaped structure as a whole.

[0039] As for the specific structural setting of the first elastic rod 11, as shown in Figure 4, the first elastic rod 11 includes a first lower elastic rod 111 and a second lower elastic rod 112. The first lower elastic rod 111 and the second lower elastic rod 112 are respectively abutted against the fixed plate 2, so that the torsion spring 1 is pressed against the fixed plate 2, giving the second elastic rod 12 sufficient supporting force, simplifying the keyboard structure, improving production efficiency, reducing costs, and facilitating large-scale production.

[0040] Regarding the specific structural arrangement of the second elastic rod 12, as shown in FIG4 , the second elastic rod 12 includes a first upper elastic rod 121, a second upper elastic rod 122, and a third upper elastic rod 123. The first upper elastic rod 121 is perpendicular to the second upper elastic rod 122 and the third upper elastic rod 123, respectively, to achieve a balanced pressing function, simplify the keyboard structure, improve production efficiency, reduce costs, and facilitate large-scale production. Preferably, the first upper elastic rod 121 is integrally connected to the second upper elastic rod 122 and the third upper elastic rod 123, respectively, to ensure that the elastic restoring force of the second elastic rod 12 is consistent at all locations, allowing the entire key switch to be pressed downward smoothly.

[0041] As for the specific way in which the torsion spring 1 acts on the balancing frame 3, as shown in FIG5 , the first upper elastic rod 121 abuts against the lower end of the second cross bar 321, the second upper elastic rod 122 abuts against the lower end of the third vertical rod 322, and the third upper elastic rod 123 abuts against the lower end of the fourth vertical rod 323, so that when the key switch is pressed, the second balancing rod 32 in the balancing frame 3 is forced to drive the first balancing rod 31 to press downward, the second cross bar 321 presses the first upper elastic rod 121 downward, the third vertical rod 322 presses the second upper elastic rod 122 downward, and the fourth vertical rod 323 presses the third upper elastic rod 123 downward, so that the first The second balance bar 3 presses the second elastic bar 12 downward, causing the torsion spring 1 to deform. When the key switch is released, the torsion spring 1, under its own elastic restoring force, drives the first upper elastic bar 121 to reset the second horizontal bar 321 upward, and the second upper elastic bar 122 drives the third vertical bar 322 to reset upward, and the third upper elastic bar 123 drives the fourth vertical bar 323 to reset, so that the second balance bar 3 drives the first balance bar 3 to reset, achieving the purpose of reset. The whole process is smooth and responsive, with high stability, which is conducive to the coordination between various accessories, realizes the function of balanced pressing, simplifies the keyboard structure, improves production efficiency, reduces costs, and facilitates large-scale production.

[0042] Preferably, for the hinged connection between the torsion spring 1 and the balancing frame 3 , the torsion spring fixing portion 13 is rotatably connected to the connecting shaft 327 , thereby realizing the hinged connection of the torsion spring 1 to the balancing frame 3 and achieving a stable connection of the torsion spring 1 .

[0043] Example 2

[0044] In the first embodiment, the structure of the torsion spring reset is described. In this embodiment, the differences from other embodiments are mainly described, and the same structure is not repeated in this embodiment.

[0045] The main difference between Example 2 and Example 1 is that the torsion spring 1 acts on the first balance bar 31, and the specific method is: the first upper elastic rod 121 abuts against the lower end of the first horizontal rod 311, the second upper elastic rod 122 abuts against the lower end of the first vertical rod 312, and the third upper elastic rod 123 abuts against the lower end of the second vertical rod 313. When the key switch is pressed, the first balance bar 31 in the balance frame 3 is forced to drive the second balance bar 32 to press downward, the first cross bar 311 presses the first upper elastic bar 121 downward, the first vertical bar 312 presses the second upper elastic bar 122 downward, and the second vertical bar 313 presses the third upper elastic bar 123 downward, so that the first balance bar 31 presses the second elastic bar 12 downward, causing the torsion spring 1 to deform. When the key switch is released, the torsion spring 1, under its own elastic restoring force, the first upper elastic bar 121 drives the first cross bar 311 to return to its original position, the second upper elastic bar 122 drives the first vertical bar 312 to return to its original position, and the third upper elastic bar 123 drives the second vertical bar 313 to return to its original position, so that the first balance bar 31 drives the second balance bar 32 to return to its original position, achieving the purpose of overall return. The whole process is smooth and responsive, with high stability, which is conducive to the cooperation between various accessories, realizes the function of balanced pressing, simplifies the keyboard structure, improves production efficiency, reduces cost, and facilitates large-scale production.

[0046] It should be noted that the torsion spring reset structure of the gimbal disclosed in this utility model is an improvement to a specific structure, and the specific control method is not the innovation of this utility model. The key switches and other components involved in this utility model can be common standard parts or components known to those skilled in the art. Their structures, principles, and control methods are all known to those skilled in the art through technical manuals or routine experimental methods.

[0047] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are within the scope of protection of the present invention.

Claims

1. A torsion spring reset structure for a balancing frame, comprising a torsion spring, a fixing plate, and a balancing frame, characterized in that: The torsion spring is arranged between the balance frame and the fixed plate. The torsion spring includes a first elastic rod, a second elastic rod, and a torsion spring fixing part. The first elastic rod abuts against the fixed plate, the second elastic rod abuts against the balance frame, and the torsion spring fixing part and the balance frame are hinged to each other and interfere with each other.

2. The torsion spring reset structure of the balancing frame according to claim 1, characterized in that: Two first connecting blocks and two second connecting blocks are provided on the upper surface of the fixing plate. A side rotation groove is formed on the side edges of the two first connecting blocks, and a rotation hole is formed on the two second connecting blocks.

3. The torsion spring reset structure of the balancing frame according to claim 2, characterized in that: The balance frame includes a first balance pole and a second balance pole.

4. The torsion spring reset structure of the balancing frame according to claim 3, characterized in that: The first balance bar has an overall U-shaped structure, and includes a first cross bar, a first vertical bar vertically connected to one end of the first cross bar, and a second vertical bar vertically connected to the other end of the first cross bar. A first rotation axis facing outward is respectively provided at the end of the first vertical bar and the second vertical bar, and two second rotation axes are formed on the first cross bar. The first rotation axis is movably inserted into the side rotation groove of the fixed plate.

5. The torsion spring reset structure of the balancing frame according to claim 4, characterized in that: The second balance bar has an overall U-shaped structure, and includes a second cross bar, a third vertical bar vertically connected to one end of the second cross bar, a fourth vertical bar vertically connected to the other end of the second cross bar, and a third cross bar connected between the third vertical bar and the fourth vertical bar. A third rotating shaft is respectively provided outward at both ends of the second cross bar, and a fourth rotating shaft is respectively provided outward at both ends of the third cross bar. The fourth rotating shaft is movably inserted into the rotating hole of the fixed plate.

6. The torsion spring reset structure of the balancing frame according to claim 5, characterized in that: A connecting rotation hole is respectively provided on the inner side of the first vertical rod and the second vertical rod; a connecting shaft movably inserted into the connecting rotation hole is respectively provided on the outer side of the third vertical rod and the second vertical rod.

7. The torsion spring reset structure of the balancing frame according to claim 1, characterized in that: The torsion spring is in a V-shaped structure as a whole.

8. The torsion spring reset structure of the balancing frame according to claim 5, characterized in that: The first elastic rod includes a first lower elastic rod and a second lower elastic rod, the first lower elastic rod and the second lower elastic rod are respectively abutted against the fixed plate, the second elastic rod includes a first upper elastic rod, a second upper elastic rod and a third upper elastic rod, the first upper elastic rod is respectively perpendicular to the second upper elastic rod and the third upper elastic rod.

9. The torsion spring reset structure of the balancing frame according to claim 8, characterized in that: The first upper elastic rod abuts against the lower end of the second horizontal rod, the second upper elastic rod abuts against the lower end of the third vertical rod, and the third upper elastic rod abuts against the lower end of the fourth vertical rod.

10. The torsion spring reset structure of the balancing frame according to claim 8, characterized in that: The first upper elastic rod is in contact with the lower end of the first horizontal rod, the second upper elastic rod is in contact with the lower end of the first vertical rod, and the third upper elastic rod is in contact with the lower end of the second vertical rod.

11. The torsion spring reset structure of the balancing frame according to claim 8, characterized in that: The first upper elastic rod is connected to the second upper elastic rod and the third upper elastic rod respectively as a whole.

12. The torsion spring reset structure of the balancing frame according to claim 6, characterized in that: The torsion spring fixing portion is rotatably connected to the connecting shaft.

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