Middle plate structure with induction shaft core and keyboard

Abstract

The middle plate structure with the induction shaft core comprises a sliding core, a metal rod, an elastic piece, a positioning plate and a PCBA (Printed Circuit Board Assembly), the metal rod is detachably arranged below the sliding core, the elastic piece is positioned between the sliding core and the positioning plate, the sliding core is buckled on the positioning plate, and the PCBA is arranged on the positioning plate. The PCBA is located at the bottom of the positioning plate and correspondingly provided with an electromagnetic coil matched with the metal rod, and when the sliding core is pressed downwards, the metal rod extends into the electromagnetic coil. According to the middle plate structure with the induction shaft core and the keyboard, the structure is simple, and the cost is saved; a key switch does not need to be independently mounted, so that the material cost is reduced; by adopting a buckling mode, the assembling difficulty is reduced, and the manufacturing cost is correspondingly reduced; and by adopting the electromagnetic shaft key, the magnetic interference is reduced, and the accuracy of the key is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboards, and in particular discloses a middle plate structure with an inductive shaft core and a keyboard. Background Art

[0002] A keyboard is a device used to input commands and data to operate a computer. It also refers to a set of function keys arranged systematically to operate a machine or device (such as a typewriter or computer keyboard). The keyboard is the most commonly used and primary input device, allowing users to enter English letters, Chinese characters, numbers, punctuation marks, and more into a computer, thereby issuing commands and inputting data.

[0003] Traditional keyboards utilize a "keycap + key switch + midplate + key base" structure. The keycap is the visible part of the keyboard, the part that the user directly interacts with for inputting characters or executing commands. The keycap design can affect the feel and comfort of the keys. The key switch is the core component of the keyboard, located beneath the keycap. It senses the user's key presses and converts these movements into electronic signals for processing by the computer. The type and quality of the key switch directly impacts the keyboard's durability and user experience. The midplate, also known as the positioning plate, sits beneath the key switches. It provides stable support and transmits the key switch's motion to the keyboard's circuitry. The material and design of the midplate also impact the keyboard's overall performance and feel. The key base's primary function is to provide stability and support. A keyboard's key base is a crucial component, located beneath each key and providing stable support for the keycap. The design and material of the key base have a significant impact on the keyboard's overall performance and user experience. The key base not only supports the keycap but also interacts with other keyboard components (such as the support structure and magnetic components) to enable key movement and retraction. This structural design enables the keyboard to effectively convert user input into instructions that the computer can understand, while ensuring the accuracy and reliability of the input.

[0004] However, existing keyboards have the following defects:

[0005] 1. The push button switch requires a separate component to be installed on the mid-board, which is costly. In addition, due to the high installation precision requirements, poor installation may occur, and the production cost is also relatively high.

[0006] 2. Existing keyboards require separate key switches. A standard keyboard requires 108 key switches, which increases material costs accordingly.

[0007] 3. If you use a magnetic axis button, the button may not be triggered. This is usually caused by external magnetic interference or the magnetic strength of the magnetic axis itself.

[0008] Therefore, the above-mentioned defects of the existing keyboards are technical problems that need to be solved urgently. Utility Model Content

[0009] The utility model provides a middle plate structure with an induction shaft core and a keyboard, aiming to solve at least one defect existing in the existing keyboards.

[0010] The utility model relates to a middle plate structure with an inductive shaft core, comprising a sliding core, a metal rod, an elastic member, a positioning plate and a PCBA. The metal rod is detachably mounted below the sliding core, the elastic member is located between the sliding core and the positioning plate, the sliding core is buckled onto the positioning plate, and the positioning plate serves as the main body of the entire keyboard middle plate and is used to position the sliding core. The PCBA is located at the bottom of the positioning plate and is correspondingly provided with an electromagnetic coil that cooperates with the metal rod. When the sliding core is pressed down, the metal rod extends into the electromagnetic coil.

[0011] Furthermore, the metal rod includes a fixing portion and a sensing portion extending vertically below the fixing portion.

[0012] Furthermore, the positioning plate is provided with an induction through hole corresponding to the position of the induction part. When the sliding core is pressed down, the metal rod moves together, and the induction part passes through the induction through hole and extends into the electromagnetic coil.

[0013] Furthermore, the sensing portion is in a conical shape, and the fixing portion is in a cylindrical shape.

[0014] Furthermore, a sliding groove is provided on the positioning plate, and a sliding block matching the sliding groove is correspondingly provided on the sliding core. The positioning plate and the sliding core are slidingly connected via the sliding groove and the sliding block.

[0015] Furthermore, a buckle is provided at the bottom of the sliding core, and a corresponding position that cooperates with the buckle is provided at the top of the positioning plate.

[0016] Furthermore, the elastic member is cylindrical in shape.

[0017] The utility model also relates to a keyboard with an inductive shaft core, comprising the above-mentioned middle plate structure with an inductive shaft core, a plurality of sliding cores being buckled on the positioning plate, a metal rod being installed below each sliding core, and a key cap being installed above each sliding core.

[0018] Furthermore, a sensor electrically connected to the electromagnetic coil is correspondingly provided on the PCBA.

[0019] Furthermore, the positioning plate is fixedly connected to the PCBA via fasteners.

[0020] The beneficial effects achieved by the utility model are:

[0021] The present invention provides a mid-plate structure and keyboard with an inductive shaft core. The mid-plate structure with an inductive shaft core comprises a sliding core, a metal rod, an elastic member, a positioning plate, and a PCBA. The metal rod is detachably mounted below the sliding core, the elastic member is located between the sliding core and the positioning plate, the sliding core is snapped onto the positioning plate, the PCBA is located at the bottom of the positioning plate and is provided with an electromagnetic coil that cooperates with the metal rod. When the sliding core is pressed downward, the metal rod extends into the electromagnetic coil. The mid-plate structure and keyboard with an inductive shaft core provided by the present invention have a simple structure and are cost-effective. Separate key switches are not required, reducing material costs. A snap-fit ​​method is used to reduce assembly difficulty and correspondingly reduce manufacturing costs. The use of electromagnetic shaft keys reduces magnetic interference and improves key accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a cross-sectional schematic diagram of an embodiment of a middle plate structure with an induction shaft core according to the present invention;

[0023] Figure 2 This is an exploded schematic diagram of an embodiment of a middle plate structure with an induction shaft core of the utility model;

[0024] Figure 3 This is a structural schematic diagram of an embodiment of a PCBA in a mid-plate structure with an induction shaft core according to the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the elastic member and the positioning plate in the middle plate structure with the induction shaft core of the utility model;

[0026] Figure 5 This is a schematic structural diagram of the matching of the sliding core and the metal rod in a middle plate structure with an induction shaft core according to the present invention;

[0027] Figure 6 This is a schematic structural diagram of the matching between a middle plate structure with an induction shaft core and a keycap according to the present invention;

[0028] Figure 7 This is a front view of an embodiment of a keyboard with a sensing shaft core according to the present invention;

[0029] Figure 8 This is an exploded schematic diagram of an embodiment of a keyboard with a sensing shaft core according to the present invention;

[0030] Figure 9 This is a side view of an embodiment of a keyboard with a sensing shaft core according to the present invention;

[0031] Figure 10 The figure is a bottom schematic diagram of an embodiment of a keyboard with a sensing shaft core according to the present invention.

[0032] Description of Figure Numbers:

[0033] 10. Sliding core; 20. Metal rod; 30. Elastic part; 40. Positioning plate; 50. PCBA; 51. Electromagnetic coil; 21. Fixing part; 22. Sensing part; 41. Sliding groove; 42. Positioning part; 43. Sensing through hole; 11. Sliding block; 12. Buckle; 60. Keycap; 70. Fastener. DETAILED DESCRIPTION

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] like Figures 1 to 3 As shown, the first embodiment of the present invention provides a mid-plate structure with an inductive shaft core, comprising a sliding core 10, a metal rod 20, an elastic member 30, a positioning plate 40, and a PCBA (Printed Circuit Board Assembly) 50. The metal rod 20 is detachably mounted below the sliding core 10, the elastic member 30 is located between the sliding core 10 and the positioning plate 40, and the sliding core 10 is snapped onto the positioning plate 40. The PCBA 50 is located at the bottom of the positioning plate 40 and is provided with an electromagnetic coil 51 that cooperates with the metal rod 20. When the sliding core 10 is pressed downward, the metal rod 20 extends into the electromagnetic coil 51. In this embodiment, the metal rod 20 is an inductive shaft. The operating principle of the key structure with an inductive shaft core provided in this embodiment is that when the sliding core 10 is pressed downward, the metal rod 20 extends into the electromagnetic coil 51 on the PCBA 50, generating a magnetic field. The metal rod 20 moves up and down, cutting the magnetic flux lines. The sensor on the PCBA 50 reads the corresponding inductance value, and the actual press stroke is calculated using an algorithm.

[0036] Further, see Figures 1 to 6 The key structure with an inductive shaft core provided in this embodiment comprises a metal rod 20 including a fixed portion 21 and a sensing portion 22 extending vertically below the fixed portion 21. Specifically, a sensing through-hole 43 corresponding to the position of the sensing portion 22 is provided on the positioning plate 40. When the sliding core 10 is pressed down, the metal rod 20 moves in conjunction with it, and the sensing portion 22 extends into the electromagnetic coil 51 after passing through the sensing through-hole 43. The sensing portion 22 is conical in shape, and the fixed portion 21 is cylindrical in shape. The working principle of the key structure with an inductive shaft core provided in this embodiment is that when the sliding core 10 is pressed down, a magnetic field is generated by the sensing portion 22 of the metal rod 20 extending into the electromagnetic coil 51 on the PCBA 50. The metal rod 20 moves up and down to cut the magnetic flux lines. The sensor on the PCBA 50 reads the corresponding inductance value, and the actual pressing stroke can be calculated through an algorithm.

[0037] Preferably, see Figures 1 to 6In the key structure with an inductive shaft core provided in this embodiment, a sliding groove 41 is provided on the positioning plate 40, and a sliding block 11 is provided on the sliding core 10 to match the sliding groove 41. The positioning plate 40 and the sliding core 10 are slidably connected through the sliding groove 41 and the sliding block 11. A buckle 12 is provided at the bottom of the sliding core 10, and a latch 42 is provided on the top of the positioning plate 40 to match the buckle 12. The elastic member 30 is a spring, and the shape of the spring is cylindrical. In the key structure with an inductive shaft core provided in this embodiment, the metal rod 20 is installed below the sliding core 10; the elastic member 30 is placed on the positioning plate 40; the sliding core 10 is inserted into the sliding groove 41 of the positioning plate 40 through the sliding block 11. After being pressed, the buckle 12 on the sliding core 10 is snapped into the latch 42 on the positioning plate 40, thereby ensuring that the sliding core 10 can slide freely in the positioning plate 40 under the action of the elastic member 30 to complete the work.

[0038] Please see Figures 7 to 10 This embodiment also relates to a keyboard with an inductive shaft core, including the above-mentioned middle plate structure with an inductive shaft core, a plurality of sliding cores 10 are buckled on the positioning plate 40, a metal rod 20 is installed below each sliding core 10, and a keycap 60 is installed above each sliding core 10. A sensor electrically connected to the electromagnetic coil 51 is correspondingly provided on the PCBA50. The positioning plate 40 is fixedly connected to the PCBA50 by a fastener 70. In this embodiment, the fastener 70 is a screw. The keyboard with an inductive shaft core provided in this embodiment has an elastic member 30 placed in the spring placement of the positioning plate 40, and then the multiple sliding cores 10 installed with the metal rod 20 are buckled into the positioning plate 40 with the elastic member 30 placed thereon, and finally the PCBA50 is fixed to the positioning plate 40 by the fastener 70, and the keycap 60 is installed above the sliding core 10. The keyboard is completed, easy to assemble, and reduces the difficulty of assembly, thereby reducing the manufacturing cost accordingly.

[0039] like Figures 1 to 10 As shown, the insertion-sensing key structure and keyboard provided in this embodiment have the following working principles:

[0040] When assembling the keyboard, first place the elastic part 30 in the spring placement of the positioning plate 40, and then buckle the multiple sliding cores 10 equipped with metal rods 20 into the positioning plate 40 where the elastic part 30 is placed. Finally, fix the PCBA50 on the positioning plate 40 through the fastener 70, and install the keycap 60 on top of the sliding core 10. The keyboard is completed, easy to assemble, and reduces the difficulty of assembly, thereby reducing the manufacturing cost accordingly.

[0041] When the keyboard is in use, when the keycap 60 is pressed downward, the metal rod 20 is caused to sense the corresponding electromagnetic coil 51 on the PCBA 50. The sensor on the PCBA 50 reads the corresponding inductance value, and the actual pressing stroke can be calculated through the algorithm, thereby generating the corresponding function.

[0042] The mid-plate structure and keyboard with an inductive shaft provided in this embodiment, compared with the prior art, utilize a sliding core, a metal rod, an elastic member, a positioning plate, and a PCBA. The metal rod is detachably mounted below the sliding core, the elastic member is located between the sliding core and the positioning plate, the sliding core is snapped onto the positioning plate, the PCBA is located at the bottom of the positioning plate and is provided with an electromagnetic coil that cooperates with the metal rod. When the sliding core is pressed down, the metal rod extends into the electromagnetic coil. The mid-plate structure and keyboard with an inductive shaft provided in this embodiment have a simple structure and are cost-effective. Separate key switches are not required, reducing material costs. A snap-fit ​​method is used to reduce assembly difficulty and correspondingly reduce manufacturing costs. The use of electromagnetic shaft keys reduces magnetic interference and improves key accuracy.

[0043] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Clearly, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.

Claims

1. A mid-plate structure with an induction shaft core, characterized in that: The keyboard comprises a sliding core (10), a metal rod (20), an elastic member (30), a positioning plate (40) and a PCBA (50), wherein the metal rod (20) is detachably mounted below the sliding core (10), the elastic member (30) is located between the sliding core (10) and the positioning plate (40), the sliding core (10) is buckled onto the positioning plate (40), and the positioning plate (40) serves as the main body of the entire keyboard middle plate and is used to position the sliding core (10); the PCBA (50) is located at the bottom of the positioning plate (40) and is correspondingly provided with an electromagnetic coil (51) that matches the metal rod (20), and when the sliding core (10) is pressed down, the metal rod (20) extends into the electromagnetic coil (51).

2. The middle plate structure with an induction shaft core according to claim 1, characterized in that: The metal rod (20) comprises a fixing portion (21) and a sensing portion (22) extending vertically below the fixing portion (21).

3. The middle plate structure with an induction shaft core according to claim 2, characterized in that: The positioning plate (40) is provided with a sensing through hole (43) corresponding to the position of the sensing portion (22). When the sliding core (10) is pressed downward, the metal rod (20) is moved together, and the sensing portion (22) passes through the sensing through hole (43) and extends into the electromagnetic coil (51).

4. The middle plate structure with an induction shaft core according to claim 2, characterized in that: The sensing portion (22) is in a conical shape, and the fixing portion (21) is in a cylindrical shape.

5. The middle plate structure with an induction shaft core according to claim 1, characterized in that: The positioning plate (40) is provided with a sliding groove (41), and the sliding core (10) is correspondingly provided with a sliding block (11) that matches the sliding groove (41). The positioning plate (40) and the sliding core (10) are slidably connected via the sliding groove (41) and the sliding block (11).

6. The middle plate structure with an induction shaft core according to claim 1, characterized in that: The bottom of the sliding core (10) is provided with a buckle (12), and the top of the positioning plate (40) is correspondingly provided with a locking position (42) that matches the buckle (12).

7. The middle plate structure with an induction shaft core according to claim 5, characterized in that: The elastic member (30) is cylindrical in shape.

8. A keyboard with an inductive shaft core, comprising the middle plate structure with an inductive shaft core according to any one of claims 1 to 7, characterized in that: A plurality of sliding cores (10) are buckled onto the positioning plate (40), a metal rod (20) is installed below each sliding core (10), and a key cap (60) is installed above each sliding core (10).

9. The keyboard with a sensing shaft core according to claim 8, characterized in that: A sensor electrically connected to the electromagnetic coil (51) is correspondingly provided on the PCBA (50).

10. The keyboard with a sensing shaft core according to claim 9, characterized in that: The positioning plate (40) is fixedly connected to the PCBA (50) via a fastener (70).

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