JPS6315160B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a length proportional distribution and multiple value indicating device that proportionally distributes a straight line of arbitrary length under a certain ratio or directly indicates a multiplied value.

Conventionally, in order to divide a straight line section of an arbitrary length into five equal parts, for example, the calculated one-fifth length is moved several times using a divider or the like. The work is not only extremely tedious but also inaccurate;
It takes a lot of time and effort to allocate proportionally to a plurality of people under a fixed ratio instead of dividing it equally as in the above example.

Therefore, the present invention aims to provide a structure for a length proportional distribution and multiple value indicating device that can solve all of these problems. and at least a pair of left and right tensioning guides,
A separate string-like body is stretched between both guides and the drive pulley, and an index is provided at each straight part of the string-like body stretched between both stretched guides, and the circumferential speed of each drive pulley is measured. A length proportional distribution and multiple numerical value indicating device is characterized in that each length is made different under a required ratio.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 show an embodiment of the present invention. In the figures, 1 is a rectangular hollow case, and 2 is an operation member rotatably mounted approximately in the center of the hollow case 1. Axis, 3 is the same knob,
Reference numerals 4, 5, and 6 denote drive pulleys that are fixedly attached to the operating shaft 2 and rotate in conjunction with the rotation of the operating shaft 2, and the drive pulleys 4, 5, and 6 have different diameters. The circumferential speed is made to differ depending on. Reference numerals 7 and 7' denote a pair of left and right tension guides, which are provided at both left and right corner portions in the longitudinal direction of the front surface of the hollow case 1, respectively. Reference numerals 8, 9, and 10 are string-like bodies, which respectively connect both tensioning guides 7, 7' and each drive pulley 4, 5,
It is installed independently between 6 parts. 11 is hollow case 1
12 is a reference point display part provided on one side of the elongated hole; 13;
Reference numerals 14 and 15 indicate indicators attached to each of the string-like bodies 8, 9, and 10 in order to coincide with each other in the base point display section 12.

Since this embodiment has the above configuration, if the diameters of the drive pulleys 4, 5, and 6 are made different at a ratio of, for example, 1:2:3, the drive pulleys 4, 5, and 6 as the operating shaft 2 rotates, The ratio of the circumferential speeds of 5 and 6, that is, the ratio of the moving lengths of each string-like body 8, 9, and 10 is also 1:
2:3. Therefore, for example, if you want to divide the length of object A of arbitrary length into three equal parts as shown in Figure 1,
First, align the base point display section 12 with one end a of the object A, and turn the knob 3 until the index 15 matches the other end b of the object A.
Just rotate it forward in the direction of the arrow to change the remaining index 1.
3 and 14 always accurately indicate the points of one-third and two-thirds of the length between the reference point display section 12 and the index 15, respectively, so it is easy to point the object A etc.
It can be divided into equal parts. In addition to the above, for example, by aligning the indicator 14 with the other end b of the object A, the indicator 15 indicates a point that is 1.5 times the total length of the object A, and the indicator 13 indicates a point that is 1/2 the length of the object A. It is possible to directly display points at which arbitrary base point lengths are distributed or multiplied under a certain ratio.

The structure in which the drive pulleys 4, 5, and 6 are linked to the rotation of the operating shaft 2 in order to rotate the drive pulleys 4, 5, and 6 at different circumferential velocities at required ratios is as follows.
In addition to the above, for example, the drive pulleys may be interlocked using gears or friction wheels, and the diameters of the interlocked drive pulleys may be different under a certain ratio so that they rotate at the same number of rotations, or Various structures can be considered, such as interlocking each drive pulley so that the rotational speed of each drive pulley having the same diameter differs at a constant ratio.

FIG. 4 shows another embodiment in which the ratio of peripheral speeds between the drive pulleys described above can be changed arbitrarily, in which a conical friction surface 16 is provided on the outer periphery of the operating shaft 2. Each of the drive pulleys 4, 5, and 6 is brought into contact with the conical friction surface 16, and is attached to the pivot shaft 17, etc. in a state where it can freely slide up and down parallel to the linear portion on one side of the conical friction surface 16. It is. That is, since the circumferential speed ratio of each driving pulley 4, 5, 6 is the same as the ratio of the circumferential length of the conical friction surface 16 in contact with each driving pulley 4,
It is possible to steplessly change the ratio to any desired ratio simply by moving 5 and 6 to a position of any circumferential length.

As described in detail above, according to the present invention, there is an advantage that the proportional distribution and multiple value can be directly and accurately indicated under a certain ratio for a straight line of arbitrary length with an extremely simple operation.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing one embodiment of the present invention, Fig. 2 is an enlarged vertical sectional view of the same, Fig. 3 is a diagram of the same principle, and Fig. 4 is a main part showing another embodiment. It is an explanatory diagram. In the figure, 2... operating shaft, 4, 5, 6... drive pulley, 7, 7'... tensioning guide, 8, 9, 10...
... String-like body, 12 ... Base point display section, 13, 14, 1
5...Indicator.

Claims (1)

[Claims] 1. A plurality of drive pulleys that rotate in conjunction with an operating shaft, and at least a pair of left and right tension guides are provided, and separate string-like bodies are stretched between both guides and the drive pulleys, and a string-like body is stretched between both guides and the drive pulleys. Proportional distribution of length and multiple numerical value indication, characterized in that an index is provided on each linear portion of the string-like body stretched over the area, and the circumferential speed of each driving pulley is made different under a required ratio. Device.