RU1816315C - Indicating device - Google Patents

Abstract

The invention relates to instrumentation and can be used in readout devices designed, in particular, for counting revolutions of multi-turn potentiometers. The purpose of the invention is the reduction in size and simplification of the device due to the fact that the reporting device comprises a housing 1. a shaft 2, a handle 3 with an accurate reading scale 4, a screen 5 with a groove-6, a ball retainer 10 installed in the track 11 made on the shaft 2. As a result, when the shaft 2 is rotated, the ball retainer 10 interacts with the screen 5 until it enters the groove 6. After that, the ball retainer enters the recess 9 made in the sleeve 7, and rotates it until it comes out on screen 5, the exact count is on a scale of 4, and a rough - the scale 8. 2 yl.

Description

The invention relates to instrumentation and can be used. In readout devices designed, in particular, for counting revolutions of multi-turn potentiometers /

The aim of the invention is to reduce the size and simplify the device.

Figure 1 shows the proposed device, a longitudinal section; figure 2 is a section aa in figure 1.

The readout device includes a housing 1, a shaft 2, a handle 3 with an exact reference scale 4 mounted on the shaft, a screen 5 with a groove 6, a sleeve 7 with a coarse reference scale 8 mounted on the shaft. Recesses 9 are made around the circumference of the end face of the sleeve 7. A cylindrical juice 11 is made on the shaft 2, in which a ball lock 10 is installed.

The reading device operates as follows.

When the knob 3 is rotated with an accurate reading scale 4, the shaft 2 rotates, connected to a multi-turn potentiometer (not shown). When turning the shaft 2, the ball retainer 10 interacts with the screen 5 until it falls into the groove b made in the screen. After that, the ball retainer 10 enters the recess 9 made in the sleeve 7 and, capturing the sleeve 7, begins to turn it on the bearing until it comes out of the groove b on the screen 5. In the viewing

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bore 12 changes the total revolution readings. When the latch 10 exits onto the screen 5, the sleeve 7 is fixed. Relative to the housing 1 either due to the second ball lock 13, or due to friction forces between the sleeve 7 and the housing 1, due to the pressing of the sleeve 7 to the housing 1 by a spring mounted on the shaft 2. B In this case, the discrete fixation due to the latch 13 is replaced by continuous fixation due to friction forces. The friction force between the sleeve 7 and the housing 1 must be less than the force of the spring of the retainer 10, so that you can rotate the sleeve 7 at the entrance of the ball retainer into the recess in the sleeve.

Claims (1)

SUMMARY OF THE INVENTION A reading device comprising a housing, a shaft, a handle with an accurate reading scale mounted on a shaft, a screen with a groove, a sleeve with a coarse reading scale mounted on a shaft along the circumference of which end face; recessed to the screen, recesses and a ball retainer are made, characterized in that, in order to reduce dimensions and simplify, a cylindrical juice is made on the shaft, the screen is installed between the cylindrical race and the sleeve, the ball retainer is installed in the hole made in a cylindrical ske, and the sleeve is mounted with the possibility of fixing relative to the housing.