JPS6310476B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a measurand quantity display device that displays a measurand quantity with a number wheel, and in particular, a measurand quantity display that can display increases and decreases in a measurand quantity with a number wheel. It is related to the device.

Conventionally, this type of measured quantity display device has been designed to accurately display the measured quantity by moving the momentum of the gradually rotating main shaft momentarily one digit at a time to increase the quantity to be measured. Although it was possible to display the amount to be measured digitally, it was not possible to accurately display the amount to be measured digitally using a number wheel when it came to reducing the amount to be measured.

The present invention has been made to eliminate the above-mentioned drawbacks of the conventional apparatus, and has a simple structure in which the quantity to be measured can be accurately displayed with a number wheel even when the quantity to be measured is reduced. An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a measurand quantity display device according to the present invention. In FIG. 1, an input rotating shaft 1 is rotatably attached to a shaft 2, rotates according to the amount to be measured, and is equipped with a push rod 101. The rotary plate 3 is rotatably attached to the shaft 2, and has a protrusion 301 on one side that engages with the push rod 101.
A rotating engagement piece 302 is incorporated on the other side, and a rotating magnet 303 is incorporated in the circumferential portion. The drive plate 4 is rotatably attached to the shaft 2, and has a rotational engagement piece 401 that engages with the rotational engagement piece 302 on one side, and a U pin 402 on the other side. The carry pinion 5 of the first digit is rotatably attached to the shaft 6 and includes a gear 501 that engages with the U pin 402. The number wheel 7 for the first digit is rotatably attached to the shaft 2, and has a projection 701 on one side that engages with the gear 502 of the carry pinion 5 for the first digit, and a U pin 702 on the other side. We are prepared. The carry pinion 8 of the 10th digit is rotatably attached to the shaft 6 and has a U pin 702.
A gear 801 is provided which engages with the gear 801. The number wheel 9 for the 10th digit is rotatably attached to the shaft 2 and has a protrusion 901 on one side that engages with the gear 802 of the carry pinion 8 for the 10th digit. The fixed magnet 10 is for repelling the rotating magnet 303, and the attracting iron piece 11 is for attracting the rotating magnet 303.

Next, this operation will be explained using FIGS. 2 to 6. In FIG. 2, when the input rotation shaft 1 rotates counterclockwise as shown by the arrow, the push rod 10
1 engages with the protrusion 301 of the rotating plate 3 and rotates while pushing the rotating plate 3 in the direction of the arrow. Therefore, the rotary engagement piece 302 of the rotary plate 3 pushes the one end 401a of the rotary engagement piece 401 of the drive plate 4, causing the drive plate 4 to also rotate in the direction of the arrow. In this case, the rotating magnet 303 incorporated in the rotating plate 3 rotates against the repulsive force from the fixed magnet 10 and the attractive force from the attracting iron piece 11. When the push rod 101 rotates to the state shown in FIG. 3 in this way, the rotating magnet 30 incorporated in the rotating plate 3
3 is attracted from the attracting iron piece 11 and fixed magnet 10
4, the rotary plate 3 rapidly begins to rotate in the direction of the arrow and rotates the drive plate 4 together with it, reaching the state shown in FIG. At this time, the U pin 402 attached to the drive plate 4 is connected to the pinion 5 of the first digit.
, the pinion 5 of the first digit rotates rapidly and rotates the number wheel 7 of the first digit by one digit. Thereafter, the input rotation shaft 1 gradually rotates in accordance with the amount to be measured with the push rod 101 not engaging with the protrusion 301, and eventually the push rod 101 engages with the protrusion 301.
01 and reaches the state shown in FIG. 2. The above-described operations are then repeated.

Next, when the input rotation shaft 1 rotates in the clockwise direction opposite to the arrow, the push rod 101 rotates once clockwise in FIG. Therefore, the rotary engagement piece 302 of the rotary plate 3 pushes the other end 401b of the rotary engagement piece 401 of the drive plate 4, and the drive plate 4 also rotates clockwise. When the push rod 101 rotates clockwise in this manner to the state shown in FIG. The plate 3 begins to rotate rapidly and reaches the state shown in FIG. 6 while rotating the drive plate 4. At this time, depending on the distance between one end 401a and the other end 401b of the rotational engagement piece 401, the U pin 4
02 is not yet engaged with the pinion 5 of the first digit. Therefore, when the state shown in FIG. 6 is reached, the drive plate 4
Since the U pin 402 attached to the U pin 402 rapidly passes the pinion 5 of the first digit, the pinion 5 of the first digit rapidly rotates in reverse, causing the number wheel 7 of the first digit to rotate backward by one digit. . After that, the input rotation shaft 1 is the push rod 1
01 is not engaged with the protrusion 301, it gradually rotates clockwise according to the amount to be measured, and eventually reaches a state where the push rod 101 is engaged with the protrusion 301, and the above-mentioned operation is performed as follows. Repeat.

As described above, according to the present invention, with a simple structure, the number wheel can be rapidly rotated forward or backward by one number each time the input rotation shaft rotates once in the forward or reverse direction. , the quantity to be measured can be displayed digitally without displaying the middle of the number.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a measurand quantity display device according to the present invention. 2 to 6 are explanatory diagrams of the operation of this invention. In the figure, 1 is an input rotating shaft, 101 is a push rod, 2 is a shaft, 3 is a rotating plate, 301 is a protrusion, 302
4 is a rotating engagement element, 4 is a driving plate, 401 is a rotating engagement element, 401a is one end, 401b is another end, 402 is a U pin, 5 is a carry pinion for the first digit, 50
1,502 is a gear, 6 is a shaft, 7 is a number wheel for the first digit, 10 is a fixed magnet, and 11 is an attracting iron piece.

Claims (1)

[Claims] 1. An input rotating shaft that is rotatably attached to the shaft and has a push rod that rotates according to the amount to be measured; an input rotation shaft that is rotatably attached to the shaft and has a protrusion that engages with the push rod on one side and a rotating engagement on the other side. a rotary plate having a mating piece and a rotating magnet on its circumferential portion; rotatably attached to the shaft; one end of the rotary engaging piece engages with the rotary engaging piece during forward rotation; and the other end engages with the rotating engaging piece when rotating in the reverse direction; a drive plate having a pin that engages with a carry pinion at each rotation; and a drive plate rotatably mounted on the shaft and engaged with the carry pinion to advance the number by one character each time the drive plate rotates once in the forward and reverse directions. , comprising a number wheel that returns the numbers, a fixed magnet that repels the rotating magnet, and an attraction piece that attracts the rotating magnet, and providing a distance between one end and the other end of the rotating engagement piece of the drive plate. A measurand quantity display device according to claim 1, wherein the pin is engaged with the carry pinion when the drive plate rapidly rotates.