Water meter with electronic counting device having clearance transmission mechanism
A technology of counting device and transmission mechanism, applied in the direction of measuring device, volume measurement, instrument, etc., can solve the problems of large resistance of transmission mechanism, large transmission resistance, inconvenient reading, etc., to meet the requirements of reducing processing accuracy and reducing the input of manpower and material resources , the effect of improving sensitivity
Inactive Publication Date: 2008-04-16
周岳建
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Problems solved by technology
For example, when the ones digit disc rotates 360°, the tens digit disc will rotate 36°, while the hundreds and thousands digit discs will rotate 3.6° and 0.36° respectively, which results in inconvenience for reading on the one hand. , if the ones digit dial is rotated to the position of 7, 8 or 8, 9, the tens digit dial will carry the number, such as 1, almost occupying the reading window, and it is easy to misread 0.8 or 0.9 as 1.8 or 1.9, thus cause misreading
More importantly, the transmission resistance of the entire gear transmission mechanism itself is large. In order to make the gear transmission mechanism rotate, it is necessary to increase the driving force driving the gear transmission mechanism, which directly affects the measurement accuracy of water meters, electric meters, and gas meters.
For this reason, it is also required to improve the manufacturing accuracy of the gear and minimize the friction between the shaft and the bearing, thereby increasing the manufacturing cost.
Chinese patent CN2349548Y disclosed on November 17, 1999 discloses a "ratchet digital direct-reading water meter", which adds a gear shaft between the digital discs that represent ones, tens, hundreds and thousands. Ratchet, which makes the digital disk no longer rotate continuously, but rotates in steps, thus improving the accuracy of readings, but it still cannot solve the problem of high resistance of the key transmission mechanism
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[0031] First, with reference to accompanying drawing 1 and accompanying drawing 2, illustrate according to the water meter of the electronic counting device of gap transmission mechanism of the present invention, as shown in the figure, according to the water meter of the electronic counting device of gap transmission mechanism of the present invention comprises a watchcase 1 , the lower right side of the watch case 1 is the water inlet pipe 2 connected to the water supply pipeline (not shown), the lower left side is the water outlet pipe 3 connected to the user's water device (not shown), and the top is the dial 18, Pointer 19, cover glass 20 and watch cover 21. There is an impeller 5 installed in the impeller box 4 between the inlet and outlet pipes 2 and 3. The lower end of the impeller is supported on the impeller box 4, and the upper end of the shaft supports and passes through the splint 6 on the impeller cover, on which the first The first gear 7 of the transition gear ...
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The present invention discloses a water meter of an electronic counting device with a clearance transmission mechanism, and comprises a water meter shell; the lower part of the water meter shell is respectively provided with a water outlet conduit and a water inlet conduit; an impeller is arranged between the water outlet conduit and the water inlet conduit; an output shaft of the impeller passes through a first transition gear set and is connected with a second transition gear set through magnetic force; the second transition gear set is connected with a transmission mechanism of the electronic counting device; the invention is characterized in that the transmission mechanism of the electronic counting device consists of a plurality of striking gears and stroke gears indicating different orders of magnitude; the striking gear and the stroke gear indicating the same order of magnitude are connected into a whole, wherein, the striking gear and the stroke gear of the electronic counting device with the lowest order of magnitude are the first gear of the second transition gear set; the stroke gear of the electronic counting device with the secondary lowest order of magnitude is the last gear of the second transition gear set; the second transition gear set with the highest order of magnitude only comprises the stroke gears; a plurality of striking gears and stroke gears which are connected into a whole are entirely or partially provided with resistance disks and a reading plotter for detecting the resistance value of each resistance disk. The water meter presented by the invention overcomes the disadvantages of the large transmission torque of the prior art, thereby improving metering precision, reducing the input of manpower and material resource and further reducing the cost.
Description
technical field [0001] The present invention relates to a water meter, more particularly to a water meter with an electronic counting device with a gap transmission mechanism. Background technique [0002] The counting systems of today's water meters, electricity meters, and gas meters all use decimal counting, and are all realized through gear transmission mechanisms. This transmission mechanism is used for indication, such as ones, tens, hundreds and A number plate is connected to the gear shaft of the thousand position, and 0, 1, 2, ... 9 are marked on it, and the different digits are realized by matching the transmission ratio. When the digital dial of the unit turns from 0, 1, 2, ... to 9, and then back to 0, that is to say, the user's water consumption, electricity consumption, and gas consumption reach 10 units of measurement, which means ten The digital disk of the digit should rotate from 0 to 1. Based on the gear transmission is a continuous transmission mode, so ...
Claims
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IPC IPC(8): G01F1/075G01F15/075
Inventor周岳建
Owner周岳建