CN203093511U - Length measurer for pen - Google Patents

Abstract

The utility model relates to a length measurer for a pen. By installing a pencil or a fountain pen on the length measurer for the pen, a straight line can be accurately drawn by the length measurer for the pen, and length data can be intuitively read through a digital display screen without using measuring tools such as a ruler. The length measurer for the pen is a typical new electromechanical product, and a small tool. The length measurer for the pen plays the role of replacing the ruler, is small and exquisite and convenient to carry, brings great convenience and comfortable use experience for people, and is particularly suitable for students, white collars and engineering technicians to use.

Description

The pen device for measuring length

Affiliated technical field

The utility model relates to a kind of and uses device for measuring length, under condition without survey tools such as rulers, pencil or water-color paintbrush are loaded onto, just can mark straight length exactly, and can read length numerical value intuitively by digital display screen, be a typical dynamo-electric new product, small tool.

Background technology

We will mark straight length exactly, must use survey tools such as ruler, use and be not very convenient, if can on pencil or water-color paintbrush, load onto device with automatic measurement length, just can mark straight length exactly, and can read length numerical value intuitively, and need not to use survey tools such as ruler by digital display screen.Pen has played the function of alternative ruler with device for measuring length, and it is small and exquisite portable, and length value is digital to be shown, for people provide great convenient and use comfortable experience, is fit to very much student, white collar, engineers and technicians and uses.

Summary of the invention

To draw straight line and must use not convenient that survey tool such as ruler brings in order to solve, the utility model provides a kind of to use device for measuring length, do not using under the condition of survey tools such as ruler, can mark straight length exactly, and can read length numerical value intuitively by digital display screen, played the effect of alternative ruler, for people provide convenient greatly and use comfortable experience.

The technical scheme that its technical problem that solves the utility model adopts is: the utility model is by controller (3) control, and controller (3) is made of single-chip microcomputer, Hall element and testing circuit, charactron (2) and display circuit.Stud with a small magnet on the roller (5), Hall element is contained near the roller (5), and receives on the single-chip microcomputer external interrupt interface.According to Hall effect, the moving circle of roller (5) revolution, when small magnet near Hall element the time, Hall element will produce a trailing edge pulse, produce pulse signal, triggering single-chip microcomputer external interrupt.Whenever low level signal of Hall element output, just make singlechip interruption once, Hall element is just with in the form input single-chip microcomputer of external signal with pulse signal like this, the single-chip microcomputer external interrupt is exactly that paired pulses is counted, umber of pulse is exactly the rotation number of turns of roller, the rotating number of turns of roller multiply by the diameter of roller outer ring, is exactly the length of line.Single-chip microcomputer is given display circuit data-signal after handling as calculated, and driving LED charactron (2) shows marking lengths.

The beneficial effects of the utility model are:

1. need not to use survey tools such as ruler, just can mark straight length exactly, play the effect that substitutes ruler.

2. marking lengths dynamically shows by charactron is instant, and for people provide convenient greatly and use comfortable experience, very suitable student, white collar, engineers and technicians use.

3. pen simple in structure, the use, easy to carry of device for measuring length; Volume is little, in light weight, cost is low, the life-span is long; Linear measure longimetry is accurate, intelligent.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and embodiments.

Fig. 1 is the utility model product figure.

Fig. 2 is the utility model product use figure.

Among Fig. 1: 1-frame, 2-charactron, 3-controller, 4-rubber sleeve, 5-roller, 6-rivet.

The specific embodiment

The utility model product as shown in Figure 1, pen is made up of frame (1), charactron (2), controller (3), rubber sleeve (4), roller (5), (6) six members of rivet with a device for measuring length.Controller (3) is responsible for reception, calculating, transmission, control signal; Charactron (2) is a display screen, shows marking lengths; Roller (5) is used for rolling, and pen roller when line must rotate simultaneously, and just roller (5) must contact paper simultaneously with pen; Controller (3), roller (5), charactron (2) are installed on the frame (1), frame (1) is folding shape, alternate 135 degree angles, have circular hole in the middle of the frame (1), rubber sleeve (4) is installed in the circular hole, the effect of rubber sleeve (4) is by frictional force relative fixed pen, after penholder is gone into the rubber sleeve (4) of frame (1), be miter angle, that straight line can be drawn is more straight, can be not crooked; Rivet (6) is riveted on roller (5) on the frame (1), is enclosed within on the roller (5) but rivet (6) is a sky, because roller (5) will rotate.

As shown in Figure 2, at first penholder is gone in middle the circular hole of rubber sleeve (4) of frame (1) when the utility model uses, begin line then, roller (5) must roll simultaneously, the instant dynamically demonstration of charactron (2) marking lengths.

Claims (2)

1. A kind of novel pen device for measuring length, under condition without survey tools such as rulers, pencil or water-color paintbrush are loaded onto, just can mark straight length exactly, and can read length numerical value intuitively by digital display screen, be a typical dynamo-electric new product, small tool.

   It is characterized in that:

   1. penholder is gone in the middle circular hole of rubber sleeve (4) of frame (1), and roller (5) must rotate in the time of with the stroke line, just roller (5) with must contact paper simultaneously.
2. 2. charactron (2) dynamically shows marking lengths immediately.

Images