CN2466704Y - A kind of personal digital assistant external keyboard - Google Patents

Abstract

An external keyboard of personal digital assistant is composed of a casing, a keyboard set, a main circuit board, a supporting plate of personal digital assistant, and a main circuit board installed to the left and right sides of said casing. Therefore, the keyboard can effectively achieve the function of greatly reducing the area, and can have the keyboard group shape with large area and large pattern when being unfolded, thereby improving the use convenience and practicability.

Description

A kind of personal digital assistant external keyboard

The utility model relates to an external keyboard for a personal digital assistant, in particular to an external keyboard for a personal digital assistant (PDA). There is a PDA connection seat inside the room, which can be unfolded for use or folded for storage, which is convenient for operation and portable keyboard.

General existing PDA (personal digital assistant) itself does not have hardware keyboard, yet for ease of use, existing many external keyboards are for use; And general existing PDA special external keyboard (as shown in Figure 5), Its main structure is in the form of an electronic dictionary, which is in the shape of a single rectangle and cannot be folded, and the button group structure b on the housing a is not protected by a cover, and only a signal connector c is provided on the central upper edge When in use, the personal digital assistant d is inserted on the connector C, and the key group structure b on the structure can be used to input data, and the personal digital assistant d is input data.

This existing PDA external keyboard, in order to have enough key quantity and suitable key size, make its overall area can be a lot bigger than the area of personal digital assistant d, make it very inconvenient to carry; And if the size is made smaller, it will be very inconvenient to operate and use; and wherein the PDA is only engaged and fixed by the connector without other supports, so it is easy to fall off or signal interruption, which is not practical.

The main purpose of the utility model is to provide a PDA external keyboard, wherein the keyboard can be folded and overlapped into one, so as to reduce the overall area by half, which is convenient for users to carry; The keyboard layout type is convenient for users to operate.

The second purpose of the present utility model is to provide a PDA external keyboard, wherein the keyboard has a support plate to support the PDA, so as to assist in stabilizing the PDA when connecting.

The purpose of this utility model is achieved through the following technical solutions:

An external keyboard for a personal digital assistant, which mainly includes a housing, a keyboard set, a main circuit board and a supporting board for a personal digital assistant. It contains a keyboard set, a main circuit board and a personal digital assistant support board; the keyboard set includes more than one key, function keys on the right and a flexible circuit board at the bottom, and the more than one key is divided into a left keyboard The main circuit board is installed on the right side of the left panel of the housing base, and is electrically connected with the flexible circuit board of the keyboard group. A protective plate is covered and fixed; the personal digital assistant support plate is a rectangular plate, framed on the upper edge of the right side of the base, and has a connector at the bottom of the inner side, and its wire is connected with the circuit of the main circuit board. A support frame is pivotally mounted on the outer edge of the support plate.

According to the above, because the integral keyboard set of the present utility model can be divided into two and stacked together, therefore, the area after folding can be much smaller than the general existing PDA keyboard; in addition, the utility model The overall keyboard can protect the internal keyboard group after being folded; moreover, because the utility model can easily reduce the area of 1/2 of the total length of the keyboard, it can moderately enlarge the size of each key and the mutual relationship between them. The distance is convenient for users to press keys; a support plate is provided therein to help support the combination of the connector and the PDA.

The utility model will be described in further detail below in conjunction with preferred embodiments and accompanying drawings.

Fig. 1 is a three-dimensional exploded view of the utility model.

Fig. 2 is a schematic diagram of the casing of the present invention being opened.

Fig. 3 is a diagram of an example of structure deployment and use of the utility model.

Fig. 4 is a folding combination diagram of the keyboard of the present invention.

Fig. 5 is a three-dimensional schematic diagram of the existing PDA external keyboard structure.

As shown in Figures 1 and 2, the external keyboard of the personal digital assistant of the present utility model mainly includes a housing 10, a keyboard group 20, a main circuit board 30 and a PDA support plate 40, etc.; wherein the housing 10 is divided into a base 11 and The top cover 12 is a cuboid that can be opened to the left and right directions, and the above-mentioned keyboard group 20, main circuit board 30 and PDA support plate 40 etc. can be accommodated in it;

The keyboard set 20 includes more than one key 21, the function key 22 on the far right and the flexible circuit board 23 at the bottom, etc., and a silicon rubber elastic is respectively arranged between each key 21, function key 22 and the flexible circuit board 23. Body (not shown in the figure), and the above-mentioned one or more buttons 21 are divided into two parts, the left keyboard part 21a and the right keyboard part 21b according to the human body, which are installed in the base 11 and the top cover 12 of the housing respectively. side:

The main circuit board 30 is installed in the space on the right side of the left keyboard part 21a of the base 11, and is electrically connected with the flexible circuit board 23 of the keyboard group, and then covered and fixed by the guard plate 31;

The PDA support plate 40 is a rectangular plate-shaped frame mounted on the upper edge of the right side of the base 11 and clamped with a fixed plate 13 and can be flipped. There is a connector 41 at the bottom of its inner surface, and its lead is connected to the above-mentioned main body. For the circuit connection of the circuit board, a support frame 42 is framed on the outer surface of the support plate.

As shown in Figures 2, 3, and 4, when the utility model is unfolded and used, the base 11 and the top cover 12 of the housing 10 are opened to the left and right to form a keyboard with a large area, and then the keyboard covered on the main circuit board 30 The support plate 40 is lifted upwards, so that the connector 41 on the inner surface is exposed and can be plugged and connected to the personal digital assistant (PDA) 50 . Also like the above-mentioned structure, the support frame 42 on the outer surface of the support plate 40 can also be lifted when needed so that the support plate and the PDA on it can be supported to some extent, so as to increase its electrical connection with the PDA, and the use can be more stable.

According to the above, since the overall keyboard set 20 of the present utility model can be divided into a left keyboard part 21a and a right keyboard part 21b, the base 11 of the shell 10 and the top cover 12 are framed and combined at the middle position, so that the Open to the left and right directions (as shown in Figure 3) or overlap each other and cover together (as shown in Figure 4); Generally, the existing PDA external keyboard is much smaller; in addition, because the structure of the utility model can easily reduce the area of 1/2 of the total length of the keyboard group after being folded, it can also be carried without affecting the maximum range. The size of each key 21 and the distance between them are appropriately enlarged to facilitate the user to press the keyboard.

To sum up, the external keyboard of the personal digital assistant of the utility model can effectively achieve the function of greatly reducing its area after being folded, and can have a keyboard group type with a large area and a large pattern when unfolded, thereby improving the convenience of use sex and practicality.

Claims (2)

1, a kind of personal digital aid (PDA) external connection keyboard, it mainly comprises a housing, keyboard group, main circuit board and personal digital aid (PDA) back up pad, it is characterized in that:

Housing has a base and top cover, and it is equipped with keyboard group, main circuit board and personal digital aid (PDA) back up pad for the rectangular parallelepiped that direction is to the left and right raised in it;

The keyboard group comprises the function key on more than one button, right side and the flexible circuit board of bottom, and this more than one button is divided into left side keypad portion and right side keypad portion, installs respectively at the base of housing and the medial surface of top cover;

The main circuit board device is electrically connected with the flexible circuit board of keyboard group in the left hand plate portion right edge of housing base, covers fixing by a backplate;

The personal digital aid (PDA) back up pad is a rectangular plate shape, and frame is contained in the upper limb of base right edge, and side bottom has a connector within it, and its lead is connected with the circuit of main circuit board.

2, a kind of personal digital aid (PDA) external connection keyboard as claimed in claim 1 is characterized in that: adorn a bracing frame at back up pad lateral surface upper limb pivot.

Images