An inductor shaft for a keyboard key switch
By employing a recessed design between the key switch core and the housing, along with a concave-convex mating structure, the problem of poor key switch core stability is solved, thereby improving the stability and sensitivity of the key switches and extending their service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU UNIONWELL SENSING & CONTROL ELECTRONICS CO LTD
- Filing Date
- 2024-12-04
- Publication Date
- 2026-07-31
AI Technical Summary
On existing inductive switch keyboards, the switch core and the bottom are in flat contact, which results in poor stability when pressed all the way down and can easily lead to accidental activation of the keyboard switch.
The design incorporates a clearance between the shaft and the housing, along with a concave-convex fit structure and a limiting groove, to ensure that the shaft remains fixed when pressed, preventing horizontal sliding. The smooth operation of the push-button switch is achieved through the bushing and elastic structure.
The stability of the inductor shaft is improved, ensuring the sensitivity and accuracy of the push-button switch during repeated use, extending its service life, and avoiding wear on the shaft and the base.
Smart Images
Figure CN224582163U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of keyboard structure, and in particular to an inductive shaft for a key switch on a keyboard. Background Technology
[0002] A keyboard is a device for inputting instructions and data to operate computer equipment. It also refers to a set of function keys arranged by a system to operate a machine or device.
[0003] Based on their working principles, keyboards can be categorized as follows: 1) Mechanical keyboards: Mechanical keyboards use a metal contact switch-like mechanism, working by making contacts open or close. They are characterized by simple manufacturing processes, high noise levels, and easy maintenance. 2) Plastic membrane keyboards: These keyboards have four internal layers, achieving zero mechanical wear. Their advantages include low price, low noise, and low cost. 3) Magnetic switch keyboards: Compared to mechanical switches, these offer smoother typing with lower actuation force, resulting in a noticeable lack of lag and rapid response. Magnetic switch keyboards have gradually evolved into inductive switch keyboards. Inductive switch keyboards feature an aluminum mounting plate, silicone padding for shock absorption, and are more fully padded than typical magnetic switch keyboards.
[0004] Each key on an inductive keyboard is equipped with a complete set of inductive switches. Existing inductive switches generate electrical signals by moving the switch core up and down. Since the inductive switch core is in contact with the bottom plane when the key is pressed down, the stability of the switch core is poor when pressed all the way down, which can easily lead to the problem of accidentally turning on the keyboard switch.
[0005] Therefore, this utility model proposes an inductor shaft for a key switch on a keyboard. Utility Model Content
[0006] The utility model of this invention is to provide an inductor shaft for a keyboard key switch, which mainly solves the problem that the inductor shaft core of the existing key switch has a hard contact with the bottom, resulting in poor stability of the shaft core when pressed to the bottom, which can easily lead to accidental activation of the keyboard switch.
[0007] This utility model proposes an inductor shaft for a key switch on a keyboard, comprising:
[0008] The shaft core has a strip-shaped structure and is arranged vertically.
[0009] A housing is fitted over the shaft core, with the shaft core positioned at the center of the housing; the inner bottom surface of the housing and the bottom end of the shaft core are mutually recessed.
[0010] In the initial state, the shaft is suspended inside the housing; in the pressed state, the bottom end of the shaft abuts against the inner bottom surface of the housing.
[0011] Preferably, the bottom of the shaft core and the center of the inner bottom surface of the housing are in a concave-convex fit.
[0012] Preferably, a first limiting groove is formed in the bottom recess of the shaft core;
[0013] The inner bottom surface of the housing has a central protrusion forming a first limiting member that is configured to avoid gaps with the first limiting groove.
[0014] Preferably, the bottom protrusion of the shaft core is formed with a second limiting member;
[0015] The inner bottom surface of the housing has a recessed center forming a second limiting groove that is mutually spaced from the first limiting groove.
[0016] Preferably, the housing comprises:
[0017] The top cover has a through hole in the center for the shaft core to pass through;
[0018] The bottom shell is detachably connected to the top cover; the center of the inner bottom surface of the bottom shell and the bottom of the shaft core are mutually separated.
[0019] Preferably, the bottom shell comprises:
[0020] The base has the same shape as the bottom of the shaft core, and the base portion is built into the bottom shell; the inner bottom surface of the base and the bottom end of the shaft core are mutually recessed.
[0021] Preferably, a bushing is fitted over the shaft core and moves the shaft core vertically up and down along the through hole of the top cover;
[0022] In the initial state, the top end of the bushing protrudes from the top cover; in the pressed state, the bushing and the shaft core move vertically downward.
[0023] Preferably, it further includes:
[0024] An elastic structure is sleeved on the outside of the shaft core and the base, and the two ends of the elastic structure respectively abut against the inner top surface of the shaft sleeve and the bottom surface of the bottom shell;
[0025] When pressed, the shaft moves downward along the length of the base, and the elastic structure is compressed between the inner top surface of the bushing and the bottom surface of the base shell.
[0026] Preferably, the bushing comprises:
[0027] The pressing part is fixedly connected to the top end of the shaft core; the diameter of the pressing part is smaller than the inner diameter of the through hole of the top cover;
[0028] A limiting structure is sleeved outside the shaft core and the elastic structure, and the edge of the limiting structure is larger than the inner diameter of the through hole of the top cover;
[0029] When pressed, the bottom end of the limiting structure abuts against the inner bottom surface of the bottom shell.
[0030] As can be seen from the above, the following beneficial effects can be obtained by applying the technical solution provided by this utility model:
[0031] First, the inductor shaft proposed in this utility model has a clearance between the bottom of the shaft core and the bottom surface of the housing, which can effectively fix the shaft core in the pressed state, thereby ensuring the smooth pressing of the inductor shaft repeatedly, and ensuring the repeated opening of the button switch and its sensitivity and accuracy.
[0032] Second, the inductor shaft proposed in this utility model achieves a clearance setting by means of a concave-convex fit structure between the shaft core and the bottom, including the concave part of the shaft core and the protrusion of the base, or the protrusion of the shaft core and the concave part of the base are correspondingly set, thereby limiting the position of the shaft core in the pressed state through a smaller structure.
[0033] Third, the inductor shaft of this utility model is provided with a base on the bottom shell, and the shape of the base is mutually non-displaced from the shaft core, which can further limit the movement path of the shaft core, ensure the contact and fixation between the shaft core and the concave and convex structure of the bottom surface of the bottom shell, and ensure that the pressing signal of the button switch is generated smoothly.
[0034] Fourth, the inductor shaft proposed in this utility model is provided with a bushing, which facilitates effective monitoring of the user's pressing state. At the same time, it limits the position of the elastic structure, ensuring that the elastic potential energy generated by the elastic structure under the pressing state can realize the automatic rebound of the inductor shaft and the button switch. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 The exploded views are of the inductor shaft in Embodiments 1 and 2 of this utility model;
[0037] Figure 2 This is a schematic diagram of the assembly of the inductor shaft in Embodiments 1 and 2 of this utility model;
[0038] Figure 3 This is a cross-sectional view of the inductor shaft in Embodiment 1 of this utility model;
[0039] Figure 4 This is a cross-sectional view of the inductor shaft in Embodiment 2 of this utility model;
[0040] Figure 5 This is a schematic diagram of the assembly of the bushing, core, and elastic structure of the inductor shaft in Embodiments 1 and 2 of this utility model. Detailed Implementation
[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0042] The inductor core of the existing key switch has a flat contact with the bottom, which makes the core less stable when pressed, and can easily lead to the problem of accidentally triggering the switch signal of the keyboard.
[0043] Example 1
[0044] like Figures 1-3 and Figure 5 As shown, to solve the above problems, this embodiment proposes an inductive shaft for a key switch on a keyboard, including a shaft core 10 and a housing; the shaft core 10 is a strip-shaped structure and is arranged vertically; the housing is sleeved on the shaft core 10, and the shaft core 10 is located at the center of the housing; the inner bottom surface of the housing and the bottom end of the shaft core 10 are mutually exempted. In this embodiment, in the initial state, the shaft core 10 is suspended inside the housing; in the pressed state, the bottom end of the shaft core 10 abuts against the inner bottom surface of the housing.
[0045] Preferably, in this embodiment, the shaft core 10 is arranged perpendicularly to the housing, that is, the shaft core 10 is arranged perpendicularly on the central axis of the housing, and the shaft core 10 can move up and down in its own height direction, that is, in the vertical direction.
[0046] Preferably, in this embodiment, the shaft core 10 is partially built into the housing, so that the part of the shaft core 10 exposed outside the housing can be used to control the movement of the shaft core 10, while the shaft core 10 is still in contact with the inside of the housing when the downward pressure distance is reached.
[0047] In this embodiment, the shaft core 10 on the inductor shaft moves vertically. When the shaft core 10 reaches its pressing distance, the bottom end of the shaft core 10 and the bottom surface of the housing are mutually protected, which helps to limit the current movement of the shaft core 10 and limit its vertical movement. At the same time, the protection setting allows the shaft core 10 to remain fixed after pressing down, avoiding planar sliding.
[0048] More specifically, the bottom of the shaft core 10 and the center of the inner bottom surface of the housing are in a concave-convex fit. The bottom of the shaft core 10 is concave to form a first limiting groove 11; the center of the inner bottom surface of the housing is convex to form a first limiting member 311, which is mutually exempt from the first limiting groove 11.
[0049] Preferably, in this embodiment, the first limiting member 311 is a cylindrical protrusion; the first limiting groove 11 is a cylindrical recess, and both the first limiting member 311 and the first limiting groove 11 are located at the center, so as to facilitate the alignment of the first limiting member 311 and the first limiting groove 11.
[0050] In this embodiment, the first limiting member 311 and the first limiting groove 11 are configured so that when the pressing distance of the shaft core 10 is reached, the shaft core 10 is kept in its current position by the alignment of the two and avoids horizontal movement, which ensures the detection of the pressing state of the button switch.
[0051] More specifically, the housing includes a detachably connected top cover 20 and a bottom cover 30; the top cover 20 has a through hole formed in its center for the shaft core 10 to pass through; the center of the inner bottom surface of the bottom cover 30 and the shaft core 10 are mutually separated.
[0052] Preferably, in this embodiment, both the top cover 20 and the bottom shell 30 are single-end open structures, and the open end faces of the top cover 20 and the bottom shell 30 abut against each other and are installed together.
[0053] Preferably, in this embodiment, the edges of the top cover 20 and the bottom shell 30 are aligned.
[0054] Preferably, in this embodiment, the edge of the top cover 20 extends downward to form a fastener, and the edge of the bottom shell 30 forms a locking position. The fastener and the locking position engage to fix the top cover 20 and the bottom shell 30 to maintain a detachable connection.
[0055] More specifically, the bottom shell 30 includes a base 31; the shape of the base 31 is the same as the bottom shape of the shaft core 10, and the base 31 is partially built into the bottom shell 30; the inner bottom surface of the base 31 and the bottom end of the shaft core 10 are mutually exempted.
[0056] Preferably, in this embodiment, the top end of the base 31 is flush with the open end face of the bottom shell 30, and the bottom end of the base 31 protrudes from the bottom end face of the bottom shell 30.
[0057] Preferably, in this embodiment, the bottom of the shaft core 10 adopts a truncated cone structure that contracts from top to bottom; the base 31 adopts a hollow truncated cone structure that contracts from top to bottom.
[0058] Preferably, in the initial state of this embodiment, the shaft core 10 should be partially built into the base 31, thereby limiting the moving direction of the shaft core 10 to the height direction of the base 31, and further limiting the moving path of the shaft core 10.
[0059] In this embodiment, due to the gradual contraction of the bottom of the shaft core 10 and the gradual contraction of the base 31, in the initial state where the movement path of the shaft core 10 is limited over a wide range, the vertical movement of the shaft core 10 further reduces its horizontal movement range, ensuring that the first limiting member 311 and the second limiting groove 312 can be smoothly engaged, that is, the shaft core 10 can be smoothly fixed.
[0060] More specifically, it also includes a bushing 40 fitted over the shaft core 10; the bushing 40 drives the shaft core 10 to move vertically up and down along the through hole of the top cover 20. In the initial state, the top end of the bushing 40 protrudes from the top cover 20; in the pressed state, the bushing 40 and the shaft core 10 move vertically downward.
[0061] Preferably, in this embodiment, the bushing 40 is a cylindrical structure, and its outer diameter is smaller than the inner diameter of the through hole of the top cover 20, that is, the bushing 40 can be smoothly inserted into the through hole of the top cover 20.
[0062] Preferably, in this embodiment, when pressed to the maximum mileage, the bushing 40 is only protruding from the top cover 20 at its end.
[0063] In this embodiment, since the bushing 40 and the core 10 are abutted together, a transmission connection can be achieved. Therefore, the user can control the core 10 inside the inductor shaft by controlling the bushing 40.
[0064] More specifically, it also includes an elastic structure 50 sleeved around the shaft core 10 and the base 31; the two ends of the elastic structure 50 are respectively disposed abutting the inner top surface of the bushing 40 and the bottom surface of the base 30. In the pressed state, the shaft core 10 moves downward along the length direction of the base 31, and the elastic structure 50 is compressed and disposed between the bottom surface of the bushing 40 and the bottom surface of the base 30.
[0065] Preferably, in this embodiment, the elastic structure 50 is also in a compressed state in the initial state, and the elastic structure 50 is further compressed in the pressing state, thereby allowing the elastic potential energy of the elastic structure 50 to accumulate further.
[0066] Preferably, in this embodiment, the elastic structure 50 is a spring.
[0067] In this embodiment, the elastic structure 50 causes the inductor shaft core 10 to move downward under the action of external force, but when the external force is removed, the elastic structure 50 can cause the inductor shaft to return to its initial state.
[0068] More specifically, the bushing 40 includes a pressing part 41 and a limiting structure 42; the pressing part 41 is fixedly connected to the top end of the shaft core 10; the diameter of the pressing part 41 is smaller than the inner diameter of the through hole of the top cover 20; the limiting structure 42 is disposed at the lower edge of the pressing part 41; the fragrance structure is sleeved outside the shaft core 10 and the elastic structure 50, and the edge of the limiting structure 42 is larger than the inner diameter of the through hole of the top cover 20. In the pressed state, the bottom end of the limiting structure 42 abuts against the inner bottom surface of the bottom shell 30.
[0069] Preferably, in this embodiment, the pressing part 41 is a cylindrical structure, the edge of which is smaller than the inner diameter of the through hole of the top cover 20, but larger than the top edge of the shaft core 10 and the edge of the elastic structure 50, so that the shaft core 10 can abut against one side edge of the elastic structure 50.
[0070] Preferably, in this embodiment, the limiting structure 42 is a four-corner wrapping structure, which is used to limit the setting position of the frame elastic structure 50 and prevent it from moving in the horizontal direction.
[0071] In this embodiment, the pressing part 41 on the bushing 40 is used to control the movement of the shaft core 10, and the limiting structure 42 is used to limit the setting position of the elastic structure 50, so as to ensure that the elastic structure 50 can be used to return the shaft core 10 to its initial position.
[0072] Example 2
[0073] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in order to solve the aforementioned problems, this embodiment proposes an inductive shaft for a key switch on a keyboard, which includes a housing and a shaft core 10, wherein the bottom end of the shaft core 10 and the center of the inner bottom surface of the housing are mutually recessed.
[0074] More specifically, the bottom protrusion of the shaft core 10 forms a second limiting member 12; the inner bottom surface of the housing is recessed to form a second limiting groove 312 that is mutually circumvented by the second limiting member 12.
[0075] Compared with Embodiment 1, the concave-convex fit structure between the shaft core 10 and the housing is reversed in this embodiment, while the rest of the structure is the same. Therefore, the repeated structures are not described redundantly in this embodiment.
[0076] In summary, this embodiment proposes an inductive shaft for a key switch on a keyboard. By setting a mutually non-exposed structure, the shaft core remains fixed under pressure, avoiding horizontal sliding and preventing wear on the shaft core or the bottom shell, thus effectively maintaining the sensitivity and service life of the key switch.
[0077] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.
Claims
1. An inductive shaft for a key switch on a keyboard, characterized in that include: The shaft core has a strip-shaped structure and is arranged vertically. A housing is fitted over the shaft core, with the shaft core positioned at the center of the housing; the inner bottom surface of the housing and the bottom end of the shaft core are mutually recessed. In the initial state, the shaft is suspended inside the housing; in the pressed state, the bottom end of the shaft abuts against the inner bottom surface of the housing.
2. The inductor shaft of a key switch on a keyboard according to claim 1, characterized in that: The bottom of the shaft core and the center of the inner bottom surface of the housing are in a concave-convex fit.
3. The inductor shaft of a key switch on a keyboard according to claim 2, characterized in that: The bottom of the shaft core is recessed to form a first limiting groove; The inner bottom surface of the housing has a central protrusion forming a first limiting member that is configured to avoid gaps with the first limiting groove.
4. The inductor shaft of a key switch on a keyboard according to claim 2, characterized in that: The bottom protrusion of the shaft core forms a second limiting member; The inner bottom surface of the housing has a recessed center forming a second limiting groove that is mutually spaced from the second limiting member.
5. An inductive shaft for a key switch on a keyboard according to any one of claims 1 to 4, characterized in that The housing includes: The top cover has a through hole in the center for the shaft core to pass through; The bottom shell is detachably connected to the top cover; the center of the inner bottom surface of the bottom shell and the bottom of the shaft core are mutually separated.
6. An inductive shaft for a key switch on a keyboard according to claim 5, wherein, The bottom shell includes: The base has the same shape as the bottom of the shaft core, and the base portion is built into the bottom shell; the inner bottom surface of the base and the bottom end of the shaft core are mutually recessed.
7. The inductor shaft of a key switch on a keyboard according to claim 6, characterized in that, Also includes: A bushing is fitted over the shaft core and moves the shaft core vertically up and down along the through hole of the top cover; In the initial state, the top end of the bushing protrudes from the top cover; in the pressed state, the bushing and the shaft core move vertically downward.
8. The inductor shaft of a key switch on a keyboard according to claim 7, characterized in that, Also includes: An elastic structure is sleeved on the outside of the shaft core and the base, and the two ends of the elastic structure respectively abut against the bottom surface of the shaft sleeve and the bottom surface of the base shell; When pressed, the shaft moves downward along the length of the base, and the elastic structure is compressed between the bottom surface of the bushing and the bottom surface of the base shell.
9. The inductor shaft of a key switch on a keyboard according to claim 8, characterized in that, The bushing includes: The pressing part is fixedly connected to the top end of the shaft core; the diameter of the pressing part is smaller than the inner diameter of the through hole of the top cover; A limiting structure is provided at the lower edge of the pressing part; the limiting structure is sleeved outside the shaft core and the elastic structure, and the edge of the limiting structure is larger than the inner diameter of the through hole of the top cover; When pressed, the bottom end of the limiting structure abuts against the inner bottom surface of the bottom shell.