CN105068668B - Modular folding keyboard - Google Patents

Abstract

The invention provides a combined folding keyboard, which solves the technical problems that the existing folding keyboard is likely to cause disconnection of the data connection at the folding connection part of the keyboard and the auxiliary keyboard cannot be replaced. It is provided with a transverse T-shaped guide rod shaft in the rotation axis limiting groove of the main keyboard part housing, and the branch guide rod is inserted into the branch guide rod limit groove of the auxiliary keyboard part, and each groove on the outer edge of the guide rod shaft core A wire is arranged in the groove, and the shaft core of the guide rod is wrapped with an insulating sheath. The conductive rings of the main rod at different positions on the main rod are respectively connected to the front ends of the wires in the groove, and the rear ends of the wires are different from those on the guide rods. The pole conductive ring at the position is connected, the circumferential surface of the main pole conductive ring fits the arc-shaped conductive contact piece, and the conductive contact piece is connected to the main keyboard circuit board through a conductive joint; To ensure that the circuit remains in a good state of communication, the structure is compact and easy to use, which ensures the durability and reliability of the keyboard.

Description

Combined folding keyboard

technical field

The invention relates to a computer keyboard, in particular to a combined folding keyboard used for connecting with portable computer equipment.

Background technique

Personal computer products have become a necessary product for people's daily life, work and entertainment. With the increasing number of microcomputer products and portable communication devices, they are developing rapidly in the direction of small size, light weight, and fast operation speed, such as tablet computers, PDAs ( Pocket PC) and smart phones, etc., users are still accustomed to using conventional computer keyboards to operate and control computer products. The conventional computer keyboard is a flat structure, and its operating area includes the main keyboard area and the auxiliary keyboard area. The auxiliary keyboard area is usually based on the user's Functional configuration is required to enable users to perform convenient and fast functional operations, which brings convenience to user operations, but at the same time, the auxiliary keyboard area occupies part of the keyboard space, increasing the horizontal length of the keyboard and the overall volume. Bring very big inconvenience to carrying keyboard.

At present, in response to the above-mentioned problems, some folding keyboards with auxiliary keyboard areas have been developed in the industry, which divide the keyboard into three or four module parts horizontally, and the shells or base plates of two adjacent modules are connected by rotating shafts or gear meshes. The data connection between the keypad and the main circuit board adopts a soft flat cable. The flexible flat cable is usually exposed outside the shafts of two adjacent modules, and it is easy to be scratched by other items when carrying it. Furthermore, the folding keyboard is unfolded or folded. It needs to be bent when bending, so it is easy to cause the metal wire inside the flexible cable to break, causing the keyboard function to fail, and the auxiliary keyboard cannot be replaced.

Contents of the invention

The purpose of the present invention is to provide a combined folding keyboard, which solves the technical problems that the structure of the existing folding keyboard is unreasonable, the data connection at the folding connection part of the keyboard is easily disconnected, the function of the keyboard becomes invalid, and the auxiliary keyboard cannot be replaced. It combines the rotating shaft and the data connection line of the folding connection part into one, has a compact structure, is easy to use, and ensures the durability and reliability of the keyboard.

The technical solution adopted in the present invention is: the combined folding keyboard includes: a keyboard body composed of a main keyboard part and auxiliary keyboard parts on both sides, and each keyboard part includes corresponding keyboard keys, housings, circuit boards and data wires , the technical points are as follows: the two sides of the main keyboard housing are respectively provided with limiting grooves for the rotating shaft, and a transverse T-shaped guide rod shaft is arranged in the limiting groove of the rotating shaft, and the rotation of the leading rod of the guide rod shaft is set at the limit position of the rotating shaft. In the groove, the guide rod in the middle of the guide rod shaft protrudes from the horizontal arc-shaped opening at the bottom of the limit groove of the rotating shaft, and is plugged into the guide rod limit groove of the auxiliary keyboard. The core of the guide rod is a hard rod, and the guide rod The outer edge of the shaft core is provided with a plurality of grooves extending from the main rod to the supporting guide rod in the axial direction. The grooves are arranged at intervals along the circumference of the guide rod shaft. A wire is arranged in each groove, and the outside of the shaft core of the guide rod Wrapped with an insulating sheath, a plurality of conductive rings are arranged at intervals on the outer circumference of the guide rod shaft. The conductive rings of the main rod at different positions on the main rod are respectively connected to the front end of a wire in a groove, and the rear ends of the wire are respectively connected to the branch guide. The rod conductive rings at different positions on the rod are connected, and an arc-shaped conductive contact piece that fits the circumferential surface of the main rod conductive ring is fixedly arranged in the limit groove of the rotating shaft. The conductive contact piece is connected to the main keyboard circuit board through a conductive joint; the auxiliary The front end of the conductive column of the keyboard part slides and crimps the conductive ring of the support rod, and the conductive column is electrically connected with the auxiliary keyboard circuit board; a groove for accommodating the auxiliary keyboard part is provided on the bottom cover of the main keyboard part housing.

The transverse arc-shaped opening at the bottom of the rotating shaft limiting groove is a semi-circular arc-shaped opening.

The insulating sleeve is provided with a groove for clamping the conductive ring, and the inside of the conductive ring is provided with a protruding part connected to the wire.

The conductive column is arranged in the transverse chute of the limit groove of the support guide rod, and the rear part of the conductive column is crimped with a thrust spring and a spring baffle.

The middle part of the ring wall of the pole conductive ring is in the shape of a concave arc surface.

The outer wall of the shaft core of the guide rod and the groove are filled with an insulating layer.

The positive effects of the present invention are: since the present invention connects the main keyboard part and the auxiliary keyboard parts on both sides through the T-shaped guide rod shaft, the guide rod shaft is provided with wires through grooves, and the two ends of the wires are connected with conductive rings, so that the guide rod shaft is both It can play the role of the rotating shaft and the data wire of the keyboard. By setting the arc-shaped conductive contact piece on the main keyboard part and the conductive column of the auxiliary keyboard part to connect with the conductive ring respectively, it ensures the reliable contact of the electrode connection point. When the keyboard part is in the stretched and folded state, the circuit can be kept in a good state of communication, and through the plug-in structure of the conductive column and the guide rod shaft, the auxiliary keyboard part can be folded after 180 degrees of rotation, and the keys of the auxiliary keyboard part It is buckled and hidden in the groove of the bottom cover of the main keyboard to protect the keys from damage and contamination. It is very convenient to disassemble, install and replace, especially the auxiliary keyboard area with different keyboard layouts can be replaced to meet different use needs. Therefore, the present invention brings great operational convenience to the user. It is integrated with the key data connection through the rotating shaft, has a compact structure, small size, and is easy to carry and use, ensuring the durability and reliability of the keyboard.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the structure of the disassembled state of the present invention;

Fig. 3 is a schematic diagram of the structure of the guide rod shaft of the present invention;

Fig. 4 is a schematic structural diagram of the disassembled state of the installation of the guide rod shaft of the present invention;

Fig. 5 is a longitudinal sectional view of the leading rod;

Fig. 6 is a partial enlarged view of the main keyboard part of the present invention;

Fig. 7 is a partially enlarged view of the auxiliary keyboard part of the present invention;

Fig. 8 is a schematic cross-sectional structure diagram of a strut conductive ring of the present invention;

Fig. 9 is a schematic diagram of the bottom structure of the keyboard body of the present invention;

Fig. 10 is a schematic diagram of the flipped state of the auxiliary keyboard part of the present invention;

Figure 11 is a schematic diagram of the bottom of the folded state of the present invention;

Fig. 12 is an electrical schematic diagram of the present invention.

Description of serial numbers in the figure: 1 main keyboard part, 2 auxiliary keyboard part, 3 main keyboard keys, 4 upper cover, 5 right auxiliary keyboard keys, 6 right auxiliary keyboard shell, 7 guide rod limit slots, 8 guide rod shafts, 9 Shaft limiting groove, 10 Bottom cover, 11 Main circuit board, 12 Groove, 13 Data wire, 14 Left auxiliary keyboard shell, 15 Left auxiliary keyboard key, 16 Main rod, 17 Guide rods, 18 Conductive connector, 19 Conductive contact sheet, 20 main rod conductive ring, 21 wire, 22 guide rod shaft core, 23 groove, 24 insulating layer, 25 insulating sheath, 26 card slot, 27 arc opening, 28 chute, 29 conductive column, 30 Thrust spring, 31 spring baffle plates, 32 pole conductive rings, 33 conductive raised parts.

detailed description

In order to make the present invention easy to understand, the specific structure of the present invention will be described in detail according to the embodiment Figs. 1 to 9, as shown in Fig. The keyboard body, as shown in Figure 2, the main keyboard part and the auxiliary keyboard part respectively include corresponding keyboard keys, casings, circuit boards and data wires, specifically, the main keyboard part includes the main keyboard keys 3, and the upper cover 4 and the bottom The main keyboard housing composed of cover 10, the main circuit board 11 and the data wires 13 for connecting the main circuit board, the main keyboard keys and the external interface; the auxiliary keyboard part includes left and right two parts, which include left and right auxiliary keyboards Buttons 15, 5 are composed of upper cover and bottom cover and left and right auxiliary keyboard housings 14, 6, and corresponding circuit boards and data wires are also arranged at the auxiliary keyboard part, and the keyboard circuits of the main keyboard part and the auxiliary keyboard part are conventional. set up. Both sides of the main keyboard housing are respectively provided with a rotating shaft limiting groove 9, a transverse T-shaped guide rod shaft 8 is arranged in the rotating shaft limiting groove, and a supporting guide rod limiting groove 7 is arranged laterally in the middle of the auxiliary keyboard part.

As shown in Figures 3 and 4, the rotating shaft limiting groove 9 is a rotating shaft limiting groove formed by the side edges of the upper cover 4 and the bottom cover 10 of the main keyboard case. , the guide rod shaft 8 is transversely T-shaped, and it is formed by a cylindrical guide rod 16 and a support guide rod 17 integrally connected on one side of the middle thereof. The transverse arc-shaped opening 27 at the bottom of the limiting groove of the output shaft is inserted into the limiting groove 7 of the support guide rod of the auxiliary keyboard. As shown in Figures 3 and 4, the guide rod shaft core 22 is a hard rod, which can be made of hard alloy material or carbon fiber insulating material, and the outer edge of the guide rod shaft core 22 is axially provided with a plurality of The grooves 23 extending from the guide rod are arranged at intervals along the circumference of the guide rod axis, and a wire 21 is arranged in each groove. The wire can be a metal wire with an insulating sheath. The outer wall of the shaft core and the groove are filled with an insulating layer 24. The insulating layer can be manufactured by casting, and an insulating sheath 25 is wrapped outside the shaft core of the guide rod. As shown in Figures 3 to 6, the outer circumference of the guide rod shaft 8 is spaced apart There are a plurality of conductive rings, the conductive rings include the main rod conductive ring 20 and the support rod conductive ring 32, the main rod conductive rings 20 at different positions on the main rod are respectively connected to the front end of the wire 21 in a groove, and the rear end of the wire They are respectively connected to the pole conductive rings 32 at different positions on the support guide rods. An arc-shaped conductive contact piece 19 that fits with the circumferential surface of the main pole conductive ring is fixedly arranged in the rotating shaft limit groove 9. The width of the conductive contact piece is the same as that of the conductive Corresponding to the ring width, the conductive contact piece is connected to the main circuit board 11 through the data wire and the conductive connector 18; a plurality of conductive posts 29 are arranged in the auxiliary keyboard part, and the front ends of the conductive posts slide and crimp the conductive ring 32 of the pole, and the conductive post and the auxiliary keyboard The circuit board of the main keyboard part is electrically connected, so that the main circuit board 11 of the main keyboard part is connected with the circuit board of the auxiliary keyboard part through the conductive contact piece 19, the main pole conductive ring 20, the wire 21, the pole conductive ring 32 and the conductive column 29, Forms the conductive path for the keyboard. As shown in FIG. 7 , a groove 12 for accommodating the auxiliary keyboard is provided on the bottom cover of the main keyboard case.

As a further improvement, the transverse arc-shaped opening 27 at the bottom of the rotating shaft limit groove 9 can adopt a semicircular arc-shaped opening, which can form a limit to the flipping of the support guide rod, and keep the auxiliary keyboard part on the same plane as the main keyboard part when it is extended. , and can be smoothly snapped into the groove 12 of the bottom cover of the main keyboard when it is folded.

As a further improvement, the insulating sheath 25 is provided with a slot for clamping the conductive ring, and a conductive protrusion 33 is formed on the inner surface of the conductive ring. A connecting post is provided to form a conductive raised part communicated with the wire.

As a further improvement, the conductive column 29 is arranged in the transverse chute 28 of the guide rod limit groove 7, and the rear part of the conductive column is provided with a thrust spring 30 and a spring baffle 31. This structure applies pressure to the conductive column through the thrust spring, not only The two electrodes can be in close contact to prevent open circuit, and an elastic locking plug structure is formed, which is convenient for disassembly and assembly. As shown in FIG. 8 , the middle part of the ring wall of the pole conductive ring 32 can also be formed into a concave arc shape, which is more conducive to the alignment clamping and improving the stability of the connection.

As shown in Figures 9 and 11, when storing the keyboard, first rotate the auxiliary keyboard parts on both sides around the support guide rods, then turn them down, snap them into the groove of the bottom cover of the main keyboard part, and reach the folded state. When it needs to be unfolded, it can be completed according to the above-mentioned reverse action; it can also be pulled out along the direction of the guide rod to forcefully pull out the auxiliary keyboard part for replacement. As shown in Figure 12, the left auxiliary keyboard part can be set as a direction keyboard, and the right auxiliary keyboard part can be set as a numeric keypad, and a conventional direction key processing chip and a number key processing chip are used inside, and the purpose of the present invention is achieved through the above scheme.

Claims (6)

1. A combined folding keyboard, comprising: a keyboard body made up of a main keyboard portion and auxiliary keyboard portions on both sides, each keyboard portion comprising corresponding keyboard keys, casings, circuit boards and data leads, characterized in that : The two sides of the main keyboard housing are respectively provided with limiting grooves for the rotating shaft, and a transverse T-shaped guide rod shaft is arranged in the limiting groove of the rotating shaft, and the main rod rotation of the guide rod shaft is arranged in the limiting groove of the rotating shaft. The guide rod in the middle of the guide shaft protrudes from the horizontal arc-shaped opening at the bottom of the limit groove of the rotating shaft, and is plugged into the guide rod limit groove of the auxiliary keyboard. The core of the guide rod is a hard rod, and the outer core of the guide rod Along the axial direction, there are several grooves extending from the leading rod to the supporting guide rod. The grooves are arranged at intervals along the circumference of the guide rod shaft. A wire is arranged in each groove, and the shaft core of the guide rod is wrapped with insulation The sheath, the outer circumference of the guide rod shaft is provided with a plurality of conductive rings at intervals, the main rod conductive rings at different positions on the guide rod are respectively connected to the front end of a wire in the groove, and the rear ends of the wire are respectively connected to the guide rod The pole conductive rings at different positions on the top are connected, and an arc-shaped conductive contact piece that fits with the circumferential surface of the main pole conductive ring is fixed in the limiting groove of the rotating shaft. The conductive contact piece is connected to the main keyboard circuit board through a conductive joint; the auxiliary keyboard The front end of the conductive column of the main keyboard is slid and crimped to connect the conductive ring of the pole, and the conductive column is electrically connected with the auxiliary keyboard circuit board; the bottom cover of the main keyboard housing is provided with a groove for accommodating the auxiliary keyboard. 2. The combined folding keyboard according to claim 1, characterized in that: the transverse arc-shaped opening at the bottom of the rotating shaft limiting groove is a semi-circular arc-shaped opening. 3 . The combined folding keyboard according to claim 1 , characterized in that: the insulating sheath is provided with a slot for engaging the conductive ring, and the inside of the conductive ring is provided with a raised portion connected to the wire. 4 . 4. The combined folding keyboard according to claim 1, characterized in that: the middle part of the ring wall of the pole conductive ring is in a concave arc shape. 5. The combined folding keyboard according to claim 1, characterized in that: the conductive column is arranged in the transverse chute of the limit groove of the support guide rod, and the rear part of the conductive column is crimped with a thrust spring and a spring baffle. 6. The combined folding keyboard according to claim 1, characterized in that: an insulating layer is provided on the outer wall of the core of the guide rod.