CN2690966Y

CN2690966Y - Anti-peeping cipher keyboard

Info

Publication number: CN2690966Y
Application number: CN 200420050215
Authority: CN
Inventors: 周伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-23
Filing date: 2004-04-23
Publication date: 2005-04-06
Anticipated expiration: 2014-04-23

Abstract

An anti-peeping cipher keyboard is used to prevent being peeped by others when entering cipher. An outer shell with an operating opening is covered on the cipher keyboard. A convex lens is positioned on the top of the outer shell. The user's sight line faces the convex lens so that through the convex lens the user can see the numbers of the numeric key. But people around the user can not see the cipher as a result of that the angle between the sight of the person around the user and the focal length exceeds a definite angle, the more the angle is larger, the more the object is more unclear to be seen, and the angle from which the numbers can be clearly seen is occupied by the user. At the places with monitors, the utility model can be reasonably positioned according to the location of the monitors, and the length projected from the support pad positioned at the rear end of the base can be adjusted to adjust the angle that the focal length of the convex lens is relative to the monitors so as to keep the monitors outside the visible range of the convex lens to prevent the cipher being peeped from the monitors.

Description

Peep-preventing cipher keyboard

Technical field

The utility model relates to a kind of code keypad that can input password, especially peep-preventing cipher keyboard.

Background technology

At present, generally the code keypad of Shi Yonging mostly is open or semi open model, no peep-proof function also has some code keypads to adopt some to prevent spying on measure, as adorning a switch in the keyboard bottom, use the hand control break-make, make the digital invalid of part input, so that the person of peeping does not know which numeral is effective or invalid, but this method does not meet people's use habit, as the saying goes " wholeheartedly not having dual-purpose ", user oneself has also been confused sometimes.Also there are some on code keypad, to adorn one and block cover, grid is installed above, refill the knob of an adjusting grid direction of visual lines, but this method seems dark because of the grid shading in the cipher keyboard cover, there is the part user to feel to reach into than in the extraneous dark cover foreign matter, fear being arranged, say that again the running program of having regulated the grid complexity has increased the use difficulty, the user must gather eye to sometimes just can see total keyboard before the grid, does not meet use habit.It is the digit position of changing at random on the code keypad that a kind of method is arranged in addition, make its series arrangement not according to 1-9, and numerical key is dealt with, the Peeping Tom by making does not see the numeral on the key, this method is accustomed to because of the number of looking that does not meet the people, make mistakes easily in the use, in the place that watch-dog is arranged, it is also powerless to spying on of top watch-dog, its production cost height, complex structure needs sometimes with the software support on the computer, and cost performance is too low.

Summary of the invention

In order to overcome the problem of unreasonable in more above-mentioned schemes, as not meet the people physiology, psychology and use habit, the utility model provides a kind of vision and operation to go up the solution of the peep-preventing cipher keyboard similar with the ordinary password keyboard.

The technical scheme in the invention for solving the technical problem: above code keypad, add an outer cover, and stay a gathering hole, adorn convex lens at the top of outer cover, the effective area of convex lens is greater than the area of numerical key part on the code keypad, convex lens and keyboard digital key plane parallel, the focal length that convex lens are selected for use is greater than the distance of convex lens to keyboard digital key plane, like this, select the convex lens of suitable focal length for use, the password figure of seeing through convex lens amplifies slightly, make under the prerequisite that keeps the suitable volume of the utility model, big key in the vision is provided, make the user feel very clear, also make things convenient for the user of eyes flower or hypometropia.When user's eyes face convex lens, what it was seen is the numeral of amplifying slightly, and the person of peeping on next door has had certain angle because of the focal length of sight line and convex lens, this angle is big more, the numeral of from convex lens, seeing just from clear become very turgidly greatly smudgy until what become, therefore its angle that can see clear numeral is very little, there is a segment distance on numerical key plane because of convex lens and code keypad simultaneously, add stopping of outer cover, the Peeping Tom sees through convex lens can see that the angle of digital keys is also very little, and these two low-angles have all been occupied by the user, and the Peeping Tom just can't spy on the password that the user inputs.There is the pad of a scalable extension elongation at base of the present utility model rear portion, regulate the rotating shaft cap on the utility model, pad is stretched out, raise rear portion of the present utility model, convex lens on the utility model are tilted to user's direction, more meet people's visual custom.In the place that watch-dog is arranged, as bank, the internal staff can be according to the position of top watch-dog, position of the present utility model rationally is set, and the extension elongation of regulating pad is regulated the angle of the focal length of convex lens with respect to watch-dog, watch-dog is in outside the clear visual range of convex lens, makes the password that from watch-dog, does not also see user's input, strengthen the trust of user this bank.Gathering hole of the present utility model is will be relatively apart from position, keyboard digital key place far away, and like this, the user puts hand when inputing password in the cover into, and the action of finger is also blocked by outer cover, and the Peeping Tom can't see the position of finger manipulation and know password by inference.Convex lens on the utility model are transparent, and the optically focused effect arranged, can make the numeral on the keyboard seem brighter, the user feels that in use all parts of this code keypad all clearly are presented at the moment, and not having psychologically has not feeling naturally and fear that foreign body sensation brings in dim cover.

The beneficial effects of the utility model are: the person of peeping that not only can prevent the user next door effectively spies on the password that the user inputs, and can also prevent to see clearly from the watch-dog of top the password that the user inputs.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is that the inside of embodiment of the present utility model is cut structural map open.

Fig. 2 is an outward appearance schematic layout pattern of the present utility model.

Among the figure, 1, convex lens, 2, gathering hole, 3, outer cover, 4, pad, 5, rotating shaft, 6, the rotating shaft cap, 7, numerical key.

Embodiment

In Fig. 1, convex lens (1) are made with glass or transparent plastic, because as circular convex lens are contained in and can make a fraction of user feel that the utility model and ordinary password keyboard compare a bit " abnormal type " on the utility model, disgusting, so the convex lens shape of present embodiment is the sort of bull's-eye used on the common hand magnifier to be dismissed round edge and becomes rectangle, so that the utility model is seemed more near the ordinary password keyboard, pad (4) and outer cover (3) are all made with opaque plastics, rotating shaft (5) is made with plastics or metal, the two end supports of rotating shaft (5) is on outer cover (3), and a rotating shaft cap (6) is installed on the part that arbitrary end exposes, the user of service turns rotating shaft cap (6), rotating shaft (5) is rotation and then, and the gear teeth above it drive the gear teeth on the pad (4), regulate the length that pad (4) stretches out.

In Fig. 2, pad (4) has been conditioned and has stretched out a part, and rotating shaft cap (6) is in rear positions of the present utility model.

Claims

A kind of peep-preventing cipher keyboard, form by convex lens (1), gathering hole (2), outer cover (3), pad (4), rotating shaft (5), rotating shaft cap (6), numerical key (7) etc., it is characterized in that convex lens (1) are contained in above the outer cover (3), pad has the gear teeth on (4), rotating shaft has the gear teeth on (5), rotating shaft (5) two end supports is on outer cover (3), and rotating shaft (5) one ends are equipped with rotating shaft cap (6).