Balance frame limiting structure of ultra-thin keyboard switch

Abstract

Disclosed is a balance frame limiting structure of an ultra-thin keyboard switch. The balance frame limiting structure comprises a substrate, a balance frame body rotatably arranged on the substrate, and an upper cover arranged on the balance frame body. First balance frame limiting holes for allowing an upper portion of the balance frame body to be rotatably inserted are formed on two sides of the upper cover, and second balance frame limiting holes for allowing a lower portion of the balance frame body to be rotatably inserted are formed on two sides of the substrate. The first balance frame limiting holes are M-shaped, gourd-shaped or circular, the second balance frame limiting holes are M-shaped, gourd-shaped or circular, and the shapes of the first balance frame limiting holes and the second balance frame limiting holes can be freely combined. The balance frame limiting structure of an ultra-thin keyboard switch provided by the present invention facilitates the engagement of the balance frame body, and can ensure the flexibility of rotation of the balance frame while reducing the overall height of the switch, thereby improving the user experience.

Description

Ultra-thin keyboard switch balance frame limiting structure TECHNICAL FIELD

[0001] The present application relates to the technical field of key switch, in particular to an ultra-thin keyboard switch balance frame limiting structure. BACKGROUND

[0002] The keyboard is a kind of instruction and data input device for operating equipment, also refers to a group of function keys arranged for operating a machine or equipment. Keyboard is the most commonly used and the most important input device, through keyboard, English letters, numbers, punctuation marks and other symbols can be input into computer, so as to send commands to computer, input data and the like.

[0003] With the increasing progress of science and technology, the thickness of the existing notebook computer is getting lighter and thinner, and therefore the keyboard thereon is also getting lighter and thinner. The balance frame currently used in the market is directly hinged to the base, and the rotation is not flexible enough, the hand feeling is not good, and the use experience of people is not good. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide an ultra-thin keyboard switch balance frame limiting structure, which is beneficial to the cooperation of the balance frame body, reduces the overall height of the switch, ensures the flexible rotation of the balance frame, and improves the use experience of people.

[0005] The technical scheme adopted by the present application to achieve the above purpose is:

[0006] An ultra-thin keyboard switch balance frame limiting structure, comprising a base plate, a balance frame body rotatably arranged on the base plate, and an upper cover arranged on the balance frame body, wherein the upper cover is formed with first balance frame limiting holes on both sides for the upper part of the balance frame body to be embedded and rotated, the base plate is formed with second balance frame limiting holes on both sides for the lower part of the balance frame body to be embedded and rotated, the first balance frame limiting holes are M-shaped or gourd-shaped or circular, the second balance frame limiting holes are M-shaped or gourd-shaped or circular, and the shapes of the first balance frame limiting holes and the second balance frame limiting holes can be freely combined.

[0007] As a further improvement of the present application, the upper part of the balance frame body is formed with an upper limiting block embedded in the first balance frame limiting hole for rotation, and the lower part of the balance frame body is formed with a lower limiting block embedded in the second balance frame limiting hole for rotation.

[0008] As a further improvement of the present application, the upper limiting block and the lower limiting block are both flat and long strip-shaped.

[0009] As a further improvement of the present application, the first balance frame limiting hole is M-shaped, with the lower end side concave and the middle convex, and the upper limiting block rotates around the position of the middle convex of the first balance frame limiting hole.

[0010] As a further improvement of the present application, the upper cover is provided with a first balance frame guiding column which is downward convex and semicircular in shape between the two groups of first balance frame limiting holes, and the upper limiting block rotates around the position of the middle convex of the first balance frame limiting hole and the first balance frame guiding column.

[0011] As a further improvement of the present application, the first balance frame limiting hole is M-shaped, with the lower end side concave and the middle convex, and the upper limiting block rotates around the position of the middle convex of the first balance frame limiting hole.

[0012] As a further improvement of the present application, the first balance frame limiting hole is M-shaped, with the lower end side concave and the middle convex, and the upper limiting block rotates around the position of the middle convex of the first balance frame limiting hole.

[0013] As a further improvement of the present application, the second balance frame limiting hole is M-shaped, with the upper end side concave and the middle convex, and the lower limiting block rotates around the position of the middle convex of the second balance frame limiting hole.

[0014] As a further improvement of the present application, the second balance frame limiting hole is M-shaped, with the lower end side concave and the middle convex, and the upper limiting block rotates around the position of the middle convex of the first balance frame limiting hole.

[0015] As a further improvement of the present application, the second balance frame limiting hole is M-shaped, with the lower end side concave and the middle convex, and the upper limiting block rotates around the position of the middle convex of the first balance frame limiting hole.

[0016] As a further improvement of the present application, the balance frame body comprises two groups of supports which are cross-connected and can be folded together, and a rotating shaft is formed in the middle of any one of the two groups of supports, and a rotating limiting hole is formed in the middle of the other group of supports for embedding the rotating shaft.

[0017] As a further improvement of the present application, the rotating shaft is flat and long, and the rotating limiting hole is M-shaped, with the upper end side concave and the middle convex.

[0018] As a further improvement of the present application, the rotating shaft is flat and long, and the rotating limiting hole is M-shaped, with the upper end side concave and the middle convex.

[0019] The present application has the following advantages:

[0020] By setting the limit mechanism to include a base plate, a gimbal body rotatably arranged on the base plate, an upper cover arranged on the gimbal body, first gimbal limiting holes are formed on both sides of the upper cover for the upper part of the gimbal body to be rotatably inserted, second gimbal limiting holes are formed on both sides of the base plate for the lower part of the gimbal body to be rotatably inserted, the upper part of the gimbal body is inserted into the first gimbal limiting hole, and the lower part of the gimbal body is inserted into the second gimbal limiting hole, thereby completing the installation of the gimbal body on the base plate and the installation of the upper cover on the gimbal, which has a simple structure, is convenient to assemble, and is beneficial to improve production efficiency.

[0021] By setting the first gimbal limiting hole to be M-shaped or gourd-shaped or circular, and the second gimbal limiting hole to be M-shaped or gourd-shaped or circular, the shapes of the first gimbal limiting hole and the second gimbal limiting hole can be freely combined, the M-shaped or gourd-shaped shape cooperates with the flat and long upper limiting block and lower limiting block to provide a fulcrum for the rotation of the upper limiting block and the lower limiting block, the circular shape is tangent to the upper limiting block and the lower limiting block respectively, thereby making the rotation of the upper limiting block and the lower limiting block more flexible and providing a rotating hand feeling, which not only reduces the overall height of the switch but also ensures the flexibility of the gimbal and improves the use experience of people. Different shapes can be chosen according to actual conditions, so that the key switch can have different flexibility and different hand feeling, meet different needs, and improve the practicality of the key switch.

[0022] The above is a summary of the technical scheme of the invention, which will be further described in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a schematic diagram of the whole invention;

[0024] Fig. 2 is a schematic diagram of the side of the invention;

[0025] Fig. 3 is a schematic diagram of the structure of the base plate;

[0026] Fig. 4 is a schematic diagram of the structure of the upper cover;

[0027] Fig. 5 is a schematic diagram of the structure of the gimbal;

[0028] Fig. 6 is a schematic diagram of the structure of the second gimbal limiting hole and the first gimbal limiting hole being M-shaped;

[0029] Fig. 7 is a schematic diagram of the structure of the second gimbal limiting hole and the first gimbal limiting hole being pressed when being M-shaped;

[0030] Fig. 8 is a schematic diagram of the internal structure of the second gimbal limiting hole and the first gimbal limiting hole being pressed when being M-shaped;

[0031] Fig. 9 is a side view of the second balance frame limiting hole and the first balance frame limiting hole being in a gourd shape;

[0032] Fig. 10 is a partial structure view of the second balance frame limiting hole and the first balance frame limiting hole being in a gourd shape;

[0033] Fig. 11 is a structure view of the second balance frame limiting hole and the first balance frame limiting hole being in a gourd shape;

[0034] Fig. 12 is an internal structure view of the second balance frame limiting hole and the first balance frame limiting hole being in a gourd shape;

[0035] Fig. 13 is a side view of the second balance frame limiting hole and the first balance frame limiting hole being in a circular shape;

[0036] Fig. 14 is a partial structure view of the second balance frame limiting hole and the first balance frame limiting hole being in a circular shape;

[0037] In the figures: 1, base plate; 11, second balance frame limiting hole; 2, balance frame body; 21, upper limiting block; 22, lower limiting block; 23, rotating shaft; 24, rotating limiting hole; 3, upper cover; 31, first balance frame limiting hole; 32, first balance frame guide column.

[0038] DETAILED DESCRIPTION

[0039] In order to further clarify the technical means and effects adopted by the present application to achieve the predetermined purpose, the specific embodiments of the present application are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0040] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Please refer to FIG. 1 to FIG. 14, the embodiment of the present application provides a kind of ultra-thin keyboard switch balance frame limiting structure, including a substrate 1, a balance frame body 2 is rotatably arranged on substrate 1, an upper cover 3 is arranged on balance frame body 2, the first balance frame limiting hole 31 for the upper portion of balance frame body 2 is embedded rotation is formed on the both sides of the upper cover 3, the second balance frame limiting hole 11 for the lower portion of balance frame body 2 is embedded rotation is formed on the both sides of the substrate 1, the first balance frame limiting hole 31 is M-shaped or calabash-shaped or circular, the second balance frame limiting hole 11 is M-shaped or calabash-shaped or circular, the shape of the first balance frame limiting hole 31 and the second balance frame limiting hole 11 can be freely combined.

[0044] By setting the present limiting mechanism to include a substrate 1, a balance frame body 2 is rotatably arranged on substrate 1, an upper cover 3 is arranged on balance frame, the first balance frame limiting hole 31 for the upper portion of balance frame body 2 is embedded rotation is formed on the both sides of the upper cover 3, the second balance frame limiting hole 11 for the lower portion of balance frame body 2 is embedded rotation is formed on the both sides of the substrate 1, the upper portion of the balance frame body 2 is embedded in the first balance frame limiting hole 31, the lower portion of the balance frame is embedded in the second balance frame limiting hole 11, so as to complete the installation of the balance frame body 2 on the substrate 1, the installation of the upper cover 3 on the balance frame, which is simple in structure, convenient to assemble, and conducive to improving production efficiency.

[0045] For the specific way of rotating operation of the balance frame body 2 corresponding to the embedding of the first balance frame limiting hole 31 and the second balance frame limiting hole 11, as shown in FIG. 1 to FIG. 14, the upper portion of the balance frame body 2 is formed with an upper limiting block 21 embedded in the first balance frame limiting hole 31 for rotation, the lower portion of the balance frame body 2 is formed with a lower limiting block 22 embedded in the second balance frame limiting hole 11 for rotation, the upper limiting block 21 is embedded in the first balance frame limiting hole 31 for rotation, the lower limiting block 22 is embedded in the second balance frame limiting hole 11 for rotation, and the two cooperate with each other to set the balance frame body 2 between the substrate 1 and the upper cover 3, and the balance frame body 2 operates stably after being stressed, the stress is uniform, the transmission of the balance frame body 2 is improved, and the service life of the key switch is guaranteed.

[0046] Preferably, as shown in FIGS. 1-14, the upper limit block 21 and the lower limit block 22 are both flat strips, which are more suitable for use in the stamping process, and the production cost of the stamped metal material is lower and the production efficiency is higher.

[0047] As shown in FIGS. 1-14, by making the first gimbal limiting hole 31 M-shaped or gourd-shaped or circular, and the second gimbal limiting hole 11 M-shaped or gourd-shaped or circular, the shapes of the first gimbal limiting hole 31 and the second gimbal limiting hole 11 can be freely combined. The M-shaped or gourd-shaped first gimbal limiting hole 31 and the second gimbal limiting hole 11 cooperate with the flat strip-shaped upper limit block 21 and the lower limit block 22 to provide a fulcrum for the rotation of the upper limit block 21 and the lower limit block 22. The circular shape is tangent to the upper limit block 21 and the lower limit block 22, respectively, so that the upper limit block 21 and the lower limit block 22 rotate more flexibly and provide a rotating feel. In addition to reducing the overall height of the switch, the flexibility of the gimbal body 2 is also ensured, and the user experience is improved. Different shapes can be chosen according to actual conditions, so that the key switch can have different flexibility and different feel, suitable for different needs, and improve the practicality of the key switch.

[0048] Specifically, as one of the schemes, as shown in FIGS. 6-8, the first gimbal limiting hole 31 is M-shaped, with the lower end side concave and the middle convex. The upper limit block 21 rotates around the middle convex position of the first gimbal limiting hole 31 as a rotating fulcrum. When the gimbal body 2 moves downward, the upper limit block 21 rotates around the middle convex position of the first gimbal limiting hole 31 as a rotating fulcrum, and the outer side of the upper limit block 21 rotates into the concave position outside the first gimbal limiting hole 31 or the upper limit block 21 is horizontally flat inside the first gimbal limiting hole 31. When the gimbal body 2 moves upward, the upper limit block 21 rotates around the middle convex position of the first gimbal limiting hole 31 as a rotating fulcrum, and the inner side of the upper limit block 21 rotates into the concave position inside the first gimbal limiting hole 31, which cooperates with each other to give the user a feel when pressing, and through the structure of the middle convex of the first gimbal limiting hole 31, the flexibility of the rotation of the upper limit block 21 is ensured while the rotation position of the upper limit block 21 is limited, and the user experience is improved.

[0049] Preferably, as shown in FIG. 7, the upper cover 3 is formed with a first gimbal guide column 32 in the form of a downward protrusion and a semicircle as a whole between the two sets of first gimbal limiting holes 31. The upper limiting block 21 rotates with the first gimbal guide column 32 and the protruding position in the middle of the first gimbal limiting hole 31 as the rotating fulcrum. The semicircle shape lifts the upper end of the upper limiting block 21 in the middle, thereby making the upper limiting block 21 more easily rotate in the first gimbal limiting hole 31, further improving the flexibility of the rotation of the upper limiting block 21, and improving the user experience.

[0050] As another solution, as shown in FIGS. 9-12, the first gimbal limiting hole 31 is in the form of a gourd, and the sides of the upper end and the lower end are outwardly recessed in the middle and inwardly protruded in the middle. The upper limiting block 21 rotates with the protruding position in the middle of the upper end and the lower end as the rotating fulcrum. When the gimbal body 2 moves downward, the upper limiting block 21 rotates with the protruding position in the middle of the upper end and the lower end as the rotating fulcrum, the outer side of the upper limiting block 21 is turned into the recessed position on the outer side of the lower end of the first gimbal limiting hole 31, and the inner side of the upper limiting block 21 is turned into the recessed position on the inner side of the upper end of the first gimbal limiting hole 31, or the upper limiting block 21 is horizontally leveled in the first gimbal limiting hole 31. When the gimbal body 2 moves upward, the inner side of the upper limiting block 21 is turned into the recessed position on the inner side of the lower end of the first gimbal limiting hole 31, and the outer side of the upper limiting block 21 is turned into the recessed position on the outer side of the upper end of the first gimbal limiting hole 31. The two cooperate to give the user a sense of pressing. And through the structure of the protruding position in the middle of the upper end and the lower end of the first gimbal limiting hole 31, the rotation position of the upper limiting block 21 is limited, and the flexibility of the rotation of the upper limiting block 21 is ensured, thereby improving the user experience.

[0051] As another solution, as shown in FIGS. 9-12, the first gimbal limiting hole 31 is in the form of a gourd, and the sides of the upper end and the lower end are outwardly recessed in the middle and inwardly protruded in the middle. The upper limiting block 21 rotates with the protruding position in the middle of the upper end and the lower end as the rotating fulcrum. When the gimbal body 2 moves downward, the upper limiting block 21 rotates with the protruding position in the middle of the upper end and the lower end as the rotating fulcrum, the outer side of the upper limiting block 21 is turned into the recessed position on the outer side of the lower end of the first gimbal limiting hole 31, and the inner side of the upper limiting block 21 is turned into the recessed position on the inner side of the upper end of the first gimbal limiting hole 31, or the upper limiting block 21 is horizontally leveled in the first gimbal limiting hole 31. When the gimbal body 2 moves upward, the inner side of the upper limiting block 21 is turned into the recessed position on the inner side of the lower end of the first gimbal limiting hole 31, and the outer side of the upper limiting block 21 is turned into the recessed position on the outer side of the upper end of the first gimbal limiting hole 31. The two cooperate to give the user a sense of pressing. And through the structure of the protruding position in the middle of the upper end and the lower end of the first gimbal limiting hole 31, the rotation position of the upper limiting block 21 is limited, and the flexibility of the rotation of the upper limiting block 21 is ensured, thereby improving the user experience.

[0052] As one of the solutions, as shown in FIGS. 6-8, the second balance frame limiting hole 11 is M-shaped, with the upper end side recessed and the middle protruded, and the lower limiting block 22 rotates around the position of the middle protrusion of the second balance frame limiting hole 11. When the balance frame body 2 moves downward, the lower limiting block 22 rotates around the position of the middle protrusion of the second balance frame limiting hole 11, and the outer side of the lower limiting block 22 turns into the recessed position outside the second balance frame limiting hole 11, or the lower limiting block 22 is horizontally leveled in the second balance frame limiting hole 11. When the balance frame body 2 moves upward, the lower limiting block 22 rotates around the position of the middle protrusion of the second balance frame limiting hole 11, and the inner side of the lower limiting block 22 turns into the recessed position inside the second balance frame limiting hole 11. The two cooperate to give the user a feeling when pressing, and through the structure of the middle protrusion of the second balance frame limiting hole 11, the lower limiting block 22 is limited in the rotating position and is flexible in rotating, improving the user experience.

[0053] As another solution, as shown in FIGS. 9-12, the second balance frame limiting hole 11 is a gourd-shaped, with the upper end and the lower end both recessed and the middle protruded, and the lower limiting block 22 rotates around the position of the middle protrusion of the upper end and the lower end. When the balance frame body 2 moves downward, the lower limiting block 22 rotates around the position of the middle protrusion of the upper end and the lower end of the second balance frame limiting hole 11, and the outer side of the lower limiting block 22 turns into the recessed position inside the lower end of the second balance frame limiting hole 11, and the inner side of the lower limiting block 22 turns into the recessed position inside the upper end of the second balance frame limiting hole 11, or the lower limiting block 22 is horizontally leveled in the second balance frame limiting hole 11. When the balance frame body 2 moves upward, the lower limiting block 22 rotates around the position of the middle protrusion of the upper end and the lower end of the second balance frame limiting hole 11, and the inner side of the lower limiting block 22 turns into the recessed position inside the upper end of the second balance frame limiting hole 11, and the outer side of the lower limiting block 22 turns into the recessed position outside the lower end of the second balance frame limiting hole 11, and the two cooperate to give the user a feeling when pressing. And through the structure of the middle protrusion of the upper end and the lower end of the second balance frame limiting hole 11, the lower limiting block 22 is limited in the rotating position and is flexible in rotating, improving the user experience.

[0054] As another solution, as shown in FIGS. 13-14, the second balance frame limiting hole 11 is circular, and the lower limiting block 22 is tangent to the first balance frame limiting hole 31, so that the lower limiting block 22 is guided and limited by the first balance frame limiting hole 31 when rotating. The circular hole structure facilitates the rotation of the lower limiting block 22, improves the flexibility of the rotation of the lower limiting block 22, and thus improves the user experience.

[0055] The number of the second balance frame limiting hole 11 and the first balance frame limiting hole 31 can be set according to actual conditions. For example, the second balance frame limiting hole 11 has a total of 4 groups, so that the four corners of the substrate 1 are balanced in force, or the second balance frame limiting hole 11 has only 2 groups on one end, and the other side is hinged. The actual situation can be chosen, so in this embodiment, it is not specifically limited.

[0056] For the specific operation of the balance frame body 2 itself, as shown in FIGS. 5, 6, 10 and 14, the balance frame body 2 includes two groups of supports that are cross-connected and can be superimposed. The middle of any one group of supports forms a rotating shaft 23, and the middle of the other group of supports forms a rotating limiting hole 24 for embedding the rotating shaft 23. When needed to be installed, the rotating shaft 23 is only needed to be aligned with the rotating limiting hole 24 to be embedded, so as to realize the pivot connection of the two groups of supports. The overall structure is simple, convenient to install, and beneficial to production.

[0057] Preferably, as shown in Figure 10, the rotating shaft 23 is in the shape of a flat strip, and the rotating limiting hole 24 is in the shape of a gourd, with the side of the upper end and the side of the lower end being concave outwardly and the middle of the upper end and the middle of the lower end being convex inwardly. When an external force is pressed, the rotating shaft 23 takes the middle convex position of the upper end and the lower end of the rotating limiting hole 24 as the rotating fulcrum, the side of the rotating shaft 23 close to the second balance frame limiting hole 11 is embedded into the concave position of the upper end of the side of the rotating limiting hole 24 close to the second balance frame limiting hole 11, and the side of the rotating shaft 23 away from the second balance frame limiting hole 11 is embedded into the concave position of the lower end of the side of the rotating limiting hole 24 away from the second balance frame limiting hole 11, or the rotating shaft 23 is in the horizontal flat state in the rotating limiting hole 24, so that the two groups of supports can be normally lowered. When the external force is removed, the rotating shaft 23 takes the middle convex position of the upper end and the lower end of the rotating limiting hole 24 as the rotating fulcrum, the side of the rotating shaft 23 close to the second balance frame limiting hole 11 is embedded into the concave position of the lower end of the side of the rotating limiting hole 24 close to the second balance frame limiting hole 11, and the side of the rotating shaft 23 away from the second balance frame limiting hole 11 is embedded into the concave position of the upper end of the side of the rotating limiting hole 24 away from the second balance frame limiting hole 11. The two cooperate with each other to give the user a hand feeling when pressing. And through the structure that the upper end and the lower end of the rotating limiting hole 24 are both convex in the middle, the rotating position of the rotating shaft 23 is limited, and the flexibility of the rotating shaft 23 is also ensured, improving the user experience.

[0058] As another preferred solution, as shown in Figures 5, 6 and 14, the rotating shaft 23 is in the shape of a flat strip, and the rotating limiting hole 24 is in the shape of a circle, and the rotating shaft 23 is tangent to the circular rotating limiting hole 24, so that the rotating shaft 23 is guided and limited by the circular rotating limiting hole 24 when rotating, the circular hole structure is conducive to the rotation of the rotating shaft 23, improves the flexibility of the rotating shaft 23, and thus improves the user experience.

[0059] It should be noted that the ultra-thin keyboard switch balance frame limiting structure disclosed in the present application is an improvement on the specific structure, and the specific control method is not the innovation point of the present application. The key switch and other components involved in the present application can be general standard components or components known to those skilled in the art, and the structure, principle and control method thereof are known to those skilled in the art through technical manuals or through conventional experimental methods.

[0060] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application in any way. Therefore, other structures obtained by using the same or similar technical features as the above-mentioned embodiments of the present application are within the scope of protection of the present application.

Claims

1. A limit structure for an ultra-thin keyboard switch balance frame, comprising a base plate, a balance frame body rotatably mounted on the base plate, and a top cover mounted on the balance frame body, characterized in that: The upper cover is formed with first balance frame limiting holes on both sides for embedding the upper part of the balance frame body to rotate, the base plate is formed with second balance frame limiting holes on both sides for embedding the lower part of the balance frame body to rotate, the first balance frame limiting hole is M-shaped or gourd-shaped or circular, and the shape of the first balance frame limiting hole and the second balance frame limiting hole can be freely combined.

2. The ultra-thin keyboard switch gimbal limit structure according to claim 1, characterized in that: The upper part of the balance frame body is formed with an upper limiting block embedded in the first balance frame limiting hole to rotate, and the lower part of the balance frame body is formed with a lower limiting block embedded in the second balance frame limiting hole to rotate.

3. The ultra-thin keyboard switch gimbal retaining structure of claim 2, wherein: The upper limiting block and the lower limiting block are both flat and long strip-shaped.

4. The ultra-thin keyboard switch gimbal limit structure according to claim 3, characterized in that: The first balance frame limiting hole is M-shaped, the lower end side is recessed in the middle and protruded, and the upper limiting block rotates with the position of the middle protrusion of the first balance frame limiting hole as the rotating fulcrum.

5. The ultra-thin keyboard switch gimbal retaining structure of claim 4, wherein: The upper cover is formed with a first balance frame guide column protruding downward and integrally shaped as a semicircle at the position between the two groups of first balance frame limiting holes, and the upper limiting block rotates with the position of the middle protrusion of the first balance frame limiting hole and the first balance frame guide column as the rotating fulcrum.

6. The ultra-thin keyboard switch gimbal retaining structure of claim 3, wherein: The first balance frame limiting hole is gourd-shaped, the side edges of the upper end and the lower end are both outwardly recessed in the middle and inwardly protruded, and the upper limiting block rotates with the positions of the middle protrusions of the upper end and the lower end as the rotating fulcrum.

7. The ultra-thin keyboard switch gimbal retaining structure of claim 3, wherein: The first balance frame limiting hole is circular, and the upper limiting block is tangent to the circular first balance frame limiting hole.

8. The ultra-thin keyboard switch gimbal retaining structure of claim 3, wherein: The second balance frame limiting hole is M-shaped, the upper end side is recessed in the middle and protruded, and the lower limiting block rotates with the position of the middle protrusion of the second balance frame limiting hole as the rotating fulcrum.

9. The ultra-thin keyboard switch gimbal retaining structure of claim 3, wherein: The second balance frame limiting hole is gourd-shaped, the side edges of the upper end and the lower end are both outwardly recessed in the middle and inwardly protruded, and the lower limiting block rotates with the positions of the middle protrusions of the upper end and the lower end as the rotating fulcrum.

10. The ultra-thin keyboard switch gimbal retaining structure of claim 3, wherein: The second balance frame limiting hole is circular, and the lower limiting block is tangent to the circular first balance frame limiting hole.

11. The ultra-thin keyboard switch gimbal retaining structure of claim 1, wherein: The balance frame body comprises two groups of supports which are cross-connected and not overlapped and are pivotally connected together, the middle part of any one group of supports is formed with a rotating shaft, and the middle part of the other group of supports is formed with a rotating limiting hole for embedding the rotating shaft to rotate.

12. The ultra-thin keyboard switch gimbal retaining structure of claim 11, wherein: The rotating shaft is flat and long strip-shaped, and the rotating limiting hole is integrally gourd-shaped, the side edges of the upper end and the lower end are both outwardly recessed in the middle and inwardly protruded.

13. The ultra-thin keyboard switch gimbal retaining structure of claim 11, wherein: The rotating shaft is flat and long strip-shaped, the rotating limiting hole is integrally circular, and the rotating shaft is tangent to the circular rotating limiting hole.

Images