CN101532811A - Length measuring pen - Google Patents

Abstract

The invention discloses a length-measuring pen, which comprises a pen holder and a nib. The nib is a length-measuring gear. The pen holder is provided with a length display gauge. The long gear meshes with the transmission gear, and the transmission gear meshes with the driving gear of the length display table. The length display table can include a millimeter table, a centimeter table, a decimeter table, and a meter table. The length measuring gear meshes with the driving gear of the millimeter table through the transmission gear, and the driving gear of the millimeter table meshes with the driving gear of the centimeter table through the transmission gear, and so on. The transmission ratios between the meter and the centimeter meter, between the centimeter meter and the decimeter meter, and between the decimeter meter and the meter meter are all 10:1. When the length-measuring pen is in use, the pen tip, that is, the length-measuring gear, can move along a curve, and the distance traveled by the pen tip can be displayed on the length display table.

Description

long pen

technical field

The invention relates to a length measuring instrument, in particular to a length measuring pen.

Background technique

The length measuring instruments currently on the market, such as rulers, tape measures, etc., are all used to measure the length of line segments or regular curves, and cannot measure the length of irregular curves. The authorized announcement number is CN2630282Y. The zero-resetting woven length meter includes a watch case, a gear set inside the watch case, and a counter connected to the gear set. However, the length meter can only be fixedly installed on the roller body. Take the length of cloth in progress.

Contents of the invention

The technical problem to be solved by the present invention is to provide a length measuring pen capable of measuring the length of irregular curves.

In order to solve the above technical problems, the length measuring pen of the present invention includes a pen holder and a nib, the nib is a length measuring gear, the pen holder is provided with at least one length display table, the driving shaft of the length display table is provided with a driving gear, and the pen holder is also provided with a There is a transmission gear, the length measuring gear meshes with the transmission gear, and the transmission gear meshes with the driving gear of the length display table.

The length display table can include millimeter table, centimeter table, decimeter table, and meter table. The transmission gear meshes with the driving gear of the decimeter meter, and the driving gear of the decimeter meter meshes with the driving gear of the meter meter through the transmission gear, between the millimeter meter and the centimeter meter, between the centimeter meter and the decimeter meter, and between the decimeter meter and the meter meter The transmission ratio is 10:1.

Such a length-measuring pen, the nib, that is, the length-measuring gear, can move along the curve. The length-measuring gear rotates the driving gear of the length display meter through the transmission gear, and the driving gear drives the driving shaft of the length display meter to rotate synchronously. The distance traveled by the pen head is It can be displayed through the length display table.

Description of drawings

The specific implementation manner of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is the transmission schematic diagram of length measuring pen of the present invention;

Fig. 2 is a left side view of Fig. 1 .

In the figure: 1 mm meter, 2 cm meter, 3 decimeter meter, 4 meter meter, 5 pen holder, 6 length measuring gear, 7 first transmission gear, 8 mm meter driving shaft, 9 mm meter driving gear, 10 second transmission Gear, 11 third transmission gears, 12 centimeters table drive gears, 13 centimeters table drive shafts, 14 decimeter table drive gears, 15 meter table drive gears.

Detailed ways

As shown in Figures 1 and 2, the length measuring pen of the present invention includes a pen holder 5 and a nib, the nib is a length measuring gear 6, the pen holder is provided with at least one length display table, and the drive shaft of the length display table is provided with a drive gear , the pen holder is also provided with a transmission gear, the length measuring gear is meshed with the transmission gear, and the transmission gear is meshed with the driving gear of the length display table.

The length display table in the present embodiment includes a millimeter meter 1, a centimeter meter 2, a decimeter meter 3, and a meter meter 4. The length measuring gear 6 meshes with the millimeter meter driving gear 9 through the first transmission gear 7, and the millimeter meter driving gear 9 and the millimeter meter driving gear 9 mesh with each other. The second transmission gear 10 meshes, and the third transmission gear 11 rotates coaxially and synchronously with the second transmission gear 10 , and meshes with the centimeter meter driving gear 12 .

In use, the nib, that is, the length-measuring gear, rolls along the curve. On the drawing, it can use the curve plate, and on the working surface—such as a steel plate, etc., it can use the spline. The rotation of the length-measuring gear 6 passes through the transmission gear. 7 drives the millimeter meter driving gear 9 to rotate, and the millimeter meter driving shaft 8 rotates synchronously thereupon, so that the millimeter meter 1 displays the reading, and the millimeter meter driving gear 9 continues to drive the second transmission gear 10 and the third transmission gear 11 to rotate, and the third transmission gear 11 drives the centimeter watch drive gear 12 to rotate, and the centimeter watch drive shaft 13 rotates synchronously thereupon to make the centimeter watch 2 display readings. By analogy, the centimeter meter driving gear 12 drives the decimeter meter driving gear 14 to rotate through the transmission gear, so that the decimeter meter 3 displays the reading; the decimeter meter driving gear 14 drives the meter meter driving gear 15 to rotate through the transmission gear, so that the meter meter 4 Displays the reading. The transmission ratios between the millimeter meter and the centimeter meter, between the centimeter meter and the decimeter meter, and between the decimeter meter and the meter meter are all 10:1, and the distance traveled by the pen head can be displayed through the length display meters.

The method of each display table pointer is similar to that of a general clock and watch, that is, it can be adjusted and reset to zero at any time.

Claims (2)

1. length measuring pen, comprise penholder and nib, it is characterized in that, described nib is for surveying spool gear, described penholder is provided with at least one length indicator gauge, and the driving shaft of length indicator gauge is provided with driven wheel, also is provided with transmission gear in the penholder, survey spool gear and be meshed with transmission gear, transmission gear is meshed with the driven wheel of length indicator gauge.

2. length measuring pen according to claim 1, it is characterized in that, described length indicator gauge comprises millimeter table, centimetre table, decimetre table, rice table, survey spool gear by transmission gear and the engagement of millimeter table driven wheel, millimeter table driven wheel is by a transmission gear and a centimetre table driven wheel engagement, centimetre table driven wheel is by transmission gear and the engagement of a decimetre table driven wheel, decimetre table driven wheel is by transmission gear and the engagement of a rice table driven wheel, between millimeter table and centimetre table, between centimetre table and the decimetre table, the decimetre table and meter show between ratio of gear be 10:1.

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