Dual-mode keyboard

Abstract

The utility model belongs to the technical field of keyboards, and particularly discloses a dual-mode keyboard which comprises a shell, a USB connector lug and a USB receiver, a circuit board is arranged in a cavity of the shell, a plurality of keys and a wireless transmitting module are electrically connected to the circuit board, all the keys are elastically connected with the circuit board, pressing parts of the keys are exposed out of the shell, and the wireless transmitting module is electrically connected with the USB connector lug. The USB receiver is located outside the shell and is in communication connection with the wireless transmitting module, the USB connector lug is located outside the shell and is electrically connected with the circuit board through a connecting line, a battery groove is formed in the bottom of the shell, and a battery contained in the battery groove is electrically connected with the circuit board. According to the dual-mode keyboard, the built-in wireless transmitting module and the external USB receiver work cooperatively, stable wireless communication in a long distance is achieved, a wireless keyboard is formed, meanwhile, the dual-mode keyboard is connected with a computer through the external USB connector lug, a wired keyboard is formed, and the using flexibility and convenience of a user are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of keyboards, and particularly relates to a dual-mode keyboard. Background Art

[0002] With the rapid development of computer technology, as an important tool for human-computer interaction, the functions and portability of keyboards have attracted more and more attention from users. Most traditional keyboards adopt a wired connection method and are directly connected to a computer through a USB connector. Although this method is stable and reliable, in some usage scenarios with a relatively long distance, such as in conference rooms, lecture halls, or work environments that require frequent movement, the wired connection limits the user's activity range and increases the risk of cable entanglement and damage.

[0003] To overcome the limitations of the above-mentioned wired keyboards, wireless keyboards have emerged as the times require. Wireless keyboards communicate with a wireless receiver on a computer through a built-in wireless transmission module, realizing a bondage-free input experience. However, when the battery power of a wireless keyboard is exhausted or the wireless signal is unstable, it may affect the normal use of users. In addition, for application scenarios that require high stability and low latency, such as gaming or professional graphic design, wireless connections may not meet the requirements.

[0004] Therefore, there is an urgent need in the market for a keyboard that can not only meet the wireless convenience but also provide the stability of a wired connection when needed. Therefore, the inventor is committed to designing a keyboard to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a dual-mode keyboard that can freely switch between two connection modes, wireless and wired, greatly improving the flexibility and convenience of user use.

[0006] In order to achieve the above purpose, a technical solution adopted by the utility model is as follows:

[0007] A dual-mode keyboard includes a housing, a USB connector, and a USB receiver. A circuit board is provided in the cavity of the housing. A plurality of keys and a wireless transmission module are electrically connected to the circuit board. All the keys are elastically connected to the circuit board and their pressing parts are exposed outside the housing. The USB receiver is located outside the housing and is communicatively connected to the wireless transmission module. The USB connector is located outside the housing and is electrically connected to the circuit board through a connecting wire. A battery slot is provided at the bottom of the housing, and a battery is housed in the battery slot. The battery is electrically connected to the circuit board.

[0008] As an improvement of the dual-mode keyboard of the utility model, the housing includes a bottom case and a cover plate. The cover plate is covered on the bottom case to form the cavity, and all the keys are exposed on the cover plate.

[0009] As an improvement of the dual-mode keyboard of the present utility model, the top of the bottom shell is hollowed out, and a plurality of reinforcing ribs are vertically arranged at intervals on the inner bottom wall of the bottom shell. Each of the reinforcing ribs is arranged along the length direction of the bottom shell, and a plurality of side ribs are vertically arranged at intervals on each of the reinforcing ribs.

[0010] As an improvement of the dual-mode keyboard of the present utility model, the reinforcing ribs include a plurality of first reinforcing ribs, a second reinforcing rib and a third reinforcing rib. The second reinforcing rib is located between all the first reinforcing ribs and the third reinforcing rib, and the heights of the first reinforcing rib, the second reinforcing rib and the third reinforcing rib gradually increase.

[0011] As an improvement of the dual-mode keyboard of the present utility model, the battery slot is located at the bottom of the cover plate and is exposed to the bottom shell, and a battery cover is provided at the opening of the battery slot.

[0012] As an improvement of the dual-mode keyboard of the present utility model, a plurality of mounting holes are provided on the cover plate, and all the keys are respectively mounted on the mounting holes. A groove is provided around each of the mounting holes, and the pressing part of the key enters the corresponding groove as it is pressed down.

[0013] As an improvement of the dual-mode keyboard of the present utility model, the groove is in a quadrilateral ring shape, and clamping grooves are provided on two opposite side walls of each of the mounting holes. Elastic connecting parts of the keys are provided with elastic arms on two opposite side walls, and buckles are provided at the free ends of the elastic arms. The buckles are clamped with the corresponding clamping grooves.

[0014] As an improvement of the dual-mode keyboard of the present utility model, a boss is provided beside the corner of the elastic connecting part of the key, and the boss is arranged along the height direction of the key.

[0015] As an improvement of the dual-mode keyboard of the present utility model, two mounting grooves are provided at intervals at the bottom of the shell, and a support foot is rotatably connected in each of the mounting grooves.

[0016] As an improvement of the dual-mode keyboard of the present utility model, the bottom of the mounting groove is arc-shaped, and elastic arms are respectively provided on two sides of the support foot. A rotating shaft is provided on the outer side of the free end of each of the elastic arms, and the support foot is rotatably connected to the side wall of the corresponding mounting groove through the two rotating shafts.

[0017] Compared with the prior art, the dual-mode keyboard of the present utility model works in cooperation with an external USB receiver through a built-in wireless transmission module to achieve stable wireless communication at a long distance, forming a wireless keyboard; at the same time, it is connected to a computer through an external USB connector to form a wired keyboard, enjoying lower latency and higher data transmission efficiency. The whole can not only communicate stably with the computer wirelessly at a long distance, but also directly improve data transmission efficiency and stability through a wired connection at a short distance, greatly enhancing the flexibility and convenience of user use. Brief Description of the Drawings

[0018] Figure 1 is a perspective view of the dual-mode keyboard of the present utility model;

[0019] Figure 2 is an exploded perspective view of the dual-mode keyboard of the present utility model;

[0020] Figure 3 is Figure 2 an enlarged view of part A in

[0021] Figure 4 is a perspective view of the dual-mode keyboard of the present utility model from another angle;

[0022] Figure 5 is another exploded perspective view of the dual-mode keyboard of the present utility model;

[0023] Figure 6 is Figure 5 an enlarged view of part B in

[0024] Figure 7 is an enlarged perspective view of a single key of the present utility model;

[0025] Figure 8 is an enlarged sectional view of a single key of the present utility model;

[0026] Figure 9 is an enlarged perspective view of a single support foot of the present utility model.

[0027] Illustration Description:

[0028] 1. Bottom case; 11. First reinforcing rib; 12. Second reinforcing rib; 13. Third reinforcing rib; 14. Side rib; 15. Installation groove; 2. Circuit board; 21. USB connector; 22. Connecting wire; 3. Cover plate; 31. Groove; 32. Installation hole; 321. Card slot; 33. Battery slot; 4. Key; 41. Elastic arm; 411. Snap; 42. Boss; 5. Battery; 51. Battery cover; 6. Support foot; 61. Elastic arm; 611. Rotating shaft; 7. USB receiver; 71. Housing. Detailed Description of the Preferred Embodiment

[0029] The following will specifically illustrate the implementation manners of the present utility model in conjunction with the accompanying drawings. The accompanying drawings are only for reference and illustration, and do not constitute a limitation on the scope of patent protection of the present utility model.

[0030] Referring to Figures 1 to 9 , a dual-mode keyboard includes a housing 71, a circuit board 2, a USB connector 21, and a USB receiver 7. The circuit board 2 is disposed in the cavity of the housing 71. A plurality of keys 4 and a wireless transmission module are electrically connected to the circuit board 2. All the keys 4 are elastically connected to the circuit board 2 and their pressing parts are all exposed outside the housing 71. The USB receiver 7 is located outside the housing 71 and is communicatively connected to the wireless transmission module. The USB connector 21 is located outside the housing 71 and is electrically connected to the circuit board 2 through a connecting wire 22. A battery slot 33 is provided at the bottom of the housing 71, and a battery 5 is accommodated in the battery slot 33. The battery 5 is electrically connected to the circuit board 2.

[0031] Referring to Figure 2 , Figure 3 , Figure 5 and Figure 6 , the housing 71 includes a bottom shell 1 and a cover plate 3. The top of the bottom shell 1 is hollowed out. A plurality of reinforcing ribs are vertically provided at intervals on the inner bottom wall of the bottom shell 1. These reinforcing ribs specifically include a plurality of first reinforcing ribs 11, a second reinforcing rib 12, and a third reinforcing rib 13. The second reinforcing rib 12 is located between all the first reinforcing ribs 11 and the third reinforcing rib 13. The heights of the first reinforcing rib 11, the second reinforcing rib 12, and the third reinforcing rib 13 gradually increase, that is: the height of the first reinforcing rib 11 is the smallest, the height of the third reinforcing rib 13 is the largest, and the height of the second reinforcing rib 12 is between the first reinforcing rib 11 and the third reinforcing rib 13, so that the thickness of the entire housing 71 gradually increases along its width direction, making the typing interface of the keyboard obliquely arranged, which is convenient for users to use. The first reinforcing rib 11, the second reinforcing rib 12, and the third reinforcing rib 13 are all arranged along the length direction of the bottom shell 1, and a plurality of side ribs 14 are vertically provided at intervals on the first reinforcing rib 11, the second reinforcing rib 12, and the third reinforcing rib 13. Two mounting grooves 15 are provided at intervals at the bottom of the bottom shell 1. The bottom of each mounting groove 15 is arc-shaped. The bottom of the cover plate 3 is hollowed out. The cover plate 3 is covered on the bottom shell 1 to form the cavity. The battery slot 33 is located at the bottom of the cover plate 3 and is exposed outside the bottom shell 1. A plurality of mounting holes 32 are provided on the top surface of the cover plate 3. A circular groove 31 with four sides is provided around each mounting hole 32. Clamping grooves 321 are provided on the two opposite side walls of each mounting hole 32.

[0032] Referring to Figure 2 and Figure 5, the wireless transmission module is integrated on the circuit board 2. The USB receiver 7 is located outside the keyboard and is used to be plugged into the interface of the computer. The wireless transmission module and the wireless reception module in the USB receiver 7 together constitute an RF radio frequency module. The working principle of the RF radio frequency module can be summarized as two processes: "transmission and reception". Transmission process: When data needs to be transmitted, the data is first encoded into a format suitable for wireless transmission (such as a modulated analog signal). Then, this signal is sent to the power amplifier module for amplification to enhance its transmission ability. Finally, the amplified signal is transmitted in the form of radio waves through the antenna. Reception process: When the antenna of the RF module receives radio waves from the outside, these signals are first sent to the radio frequency demodulator for demodulation. The demodulated signal is then amplified by the amplifier for subsequent processing. Finally, the signal is restored to the original data through the decoding process for the device to use.

[0033] Refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 , all the keys 4 are respectively installed on the mounting holes 32. The upper end of each key 4 is its pressing part, and the lower end of each key 4 is its elastic connecting part. The pressing parts of all the keys 4 are exposed on the cover plate 3. The pressing part of the key 4 enters the corresponding groove 31 as it is pressed down. Elastic arms 41 are provided on both opposite side walls of the elastic connecting part of the key 4. A buckle 411 is provided at the free end of each elastic arm 41, and the buckle 411 is clamped with the corresponding card slot 321. A boss 42 is also provided beside the corner of the elastic connecting part of the key 4. Each boss 42 is arranged along the height direction of the key 4, and the central part of the key 4 is cross-shaped.

[0034] Refer to Figure 5 , the side wall of the battery slot 33 passes through the circuit board 2 and the bottom shell 1 in sequence, so that the battery slot 33 is exposed on the bottom shell 1. A battery cover 51 is provided at the opening of the battery slot 33 to form a battery compartment. The battery 5 is located in this battery compartment, and the battery 5 is electrically connected to the circuit board 2.

[0035] Refer to Figure 2 , Figure 5 and Figure 9 , a support foot 6 is rotatably connected in each mounting groove 15. Specifically, elastic arms 61 are respectively provided on both sides of each support foot 6. The side of the elastic arm 61 close to the side wall of the mounting groove 15 is arc-shaped to match the arc-shaped bottom of the mounting groove 15. A rotating shaft 611 is provided on the outer side of the free end of each elastic arm 61. Each support foot 6 is rotatably connected to the side wall of the corresponding mounting groove 15 through two rotating shafts 611.

[0036] Refer to Figures 1 to 9, for the dual-mode keyboard of the present utility model, when wired connection is selected, directly insert the USB connector 21 into the computer, and the keyboard can be wired-connected to the computer. When wireless connection is selected, directly insert the USB receiver 7 into the computer, and the keyboard can be wirelessly connected to the computer.

[0037] The dual-mode keyboard of the present utility model aims to provide a keyboard that can stably communicate with a computer wirelessly at a long distance and directly improve data transmission efficiency and stability through wired connection at a short distance. There is a USB receiver 7 outside the keyboard, and the USB receiver 7 is wirelessly communicatively connected to the wireless transmission module, realizing the wireless connection function between the keyboard and the computer. At the same time, there is a USB connector 21 outside the keyboard, and the USB connector 21 is connected to the circuit board 2 through an external connecting wire 22, allowing the keyboard to be connected to the computer by wire when needed; the battery 5 housed in the battery slot 33 at the bottom of the keyboard provides power support for the keyboard to ensure long-term operation in the wireless mode.

[0038] The dual-mode keyboard of the present utility model integrates two modes of efficient wireless connection and stable wired connection, aiming to provide the user with an optimized input experience in different usage scenarios. The keyboard is built with an advanced wireless transmission module, which works in cooperation with the external USB receiver 7 to achieve stable wireless communication at a long distance; at the same time, through the external USB connector 21, a wired connection mode is formed to enjoy lower latency and higher data transmission efficiency. In addition, the keyboard adopts a unique elastic connection technology between the keys 4 and the circuit board 2, combined with the built-in battery system, which not only improves the comfort and durability of the keys 4, but also ensures long-lasting battery life in the wireless mode.

[0039] The above-disclosed are only the preferred embodiments of the present utility model, and the scope of the patent protection of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A dual-mode keyboard, characterized in that, It includes a housing, a USB connector head and a USB receiver. A circuit board is provided in the cavity of the housing. A plurality of buttons and a wireless transmission module are electrically connected to the circuit board. All the buttons are elastically connected to the circuit board and their pressing parts are all exposed outside the housing. The USB receiver is located outside the housing and is communicatively connected to the wireless transmission module. The USB connector head is located outside the housing and is electrically connected to the circuit board through a connecting wire. A battery slot is provided at the bottom of the housing, and a battery is received in the battery slot. The battery is electrically connected to the circuit board.

2. The dual-mode keyboard according to claim 1, characterized in that, The housing includes a bottom case and a cover plate. The cover plate is covered on the bottom case to form the cavity. All the buttons are exposed on the cover plate.

3. The dual-mode keyboard according to claim 2, wherein, The top of the bottom case is hollowed out. A plurality of reinforcing ribs are vertically provided at intervals on the inner bottom wall of the bottom case. Each reinforcing rib is arranged along the length direction of the bottom case. A plurality of side ribs are vertically provided at intervals on each reinforcing rib.

4. The dual-mode keyboard according to claim 3, wherein, The reinforcing ribs include a plurality of first reinforcing ribs, a second reinforcing rib and a third reinforcing rib. The second reinforcing rib is located between all the first reinforcing ribs and the third reinforcing rib. The heights of the first reinforcing rib, the second reinforcing rib and the third reinforcing rib gradually increase.

5. The dual-mode keyboard according to claim 2, characterized in that, The battery slot is located at the bottom of the cover plate and is exposed outside the bottom case. A battery cover is provided at the opening of the battery slot.

6. The dual-mode keyboard according to claim 2, wherein A plurality of mounting holes are provided on the cover plate. All the buttons are respectively mounted on the mounting holes. A groove is provided around each mounting hole. The pressing part of the button enters the corresponding groove as it is pressed down.

7. The dual-mode keyboard according to claim 6, wherein The groove is in a quadrilateral ring shape. Card slots are provided on two opposite side walls of each mounting hole. Elastic arms are provided on two opposite side walls of the elastic connection part of the button. A buckle is provided at the free end of the elastic arm. The buckle is clamped with the corresponding card slot.

8. The dual-mode keyboard according to claim 2, characterized in that, A boss is provided beside the corner of the elastic connection part of the button. The boss is arranged along the height direction of the button.

9. The dual-mode keyboard according to claim 1, wherein, Two mounting slots are provided at intervals at the bottom of the housing. A support foot is rotatably connected in each mounting slot.

10. The dual-mode keyboard according to claim 9, wherein, The bottom of the mounting slot is arc-shaped. Elastic arms are respectively provided on both sides of the support foot. A rotating shaft is provided outside the free end of each elastic arm. The support foot is rotatably connected to the side wall of the corresponding mounting slot through the two rotating shafts.

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