JPH0643534U - Weather trend detector - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to adjust the range of movement of the signal needle according to atmospheric pressure fluctuations. [Structure] In an aneroid type barometer that predicts weather by detecting whether the atmospheric pressure is rising, falling, or at a turning point, when the signal hand is not in contact with the pair of contact cores, the signal hand is When the signal needle is in contact with one of the contact cores, the chain that rotates the rotary shaft when the hollow needle moves further in the same direction rotates on the rotary shaft according to the movement of the hollow shaft. In the mechanism in which the signal needle continues to stay in that position after slipping, the signal needle moves between a pair of contact cores, and the contact core holder is rotated by the moving distance interval in which it contacts one of the contact cores. Therefore, it is configured to be adjustable. [Effect] The range of atmospheric pressure detection can be set only by rotating the contact core holder.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an aneroid type weather trend detection device that detects whether the atmospheric pressure is rising, falling, or at a turning point, and relates to an aneroid-type weather trend detection device. , Used for altimeter.

[0002]

[Prior art]

 The conventional aneroid type barometer uses a thin metal plate made of metal, and the bulge of the cauldron changes as the atmospheric pressure changes, and a minute change strain of this bulge is displayed with a finger. It has become. The strain is transmitted and supported by a magnifying transmission mechanism such as a spring or gear that rotates the pointer along the scale plate. In the conventional type, a small queue was used as a part of the transmission mechanism, so at altitudes of 500 m and above, altitude correction was required using the screw for altitude correction. As an example, the atmospheric pressure tendency detecting and displaying mechanism disclosed in Japanese Utility Model Publication No. 58-13727 makes it possible to control the working distance range of the working contact plate made of a conductive elastic material by adjusting the screw contacts mounted on the fixed contact plate. There is. The fixed contact plate and actuating contact plate are connected to the display switching circuit, and the weather condition is displayed by lighting the display lamp.

[0003]

[Problems to be solved by the device]

 In the weather tendency detection device of the present invention, the displacement expansion transmission mechanism of the hollow is mechanically reduced compared to the conventional type, and the air pressure adjustment mechanism changes the contact core interval distance only by the rotation operation of the contact core holder, The purpose is to easily adjust the variation in atmospheric pressure detection, reduce the variation in atmospheric pressure detection, and improve accuracy.

[0004]

[Means for Solving the Problems]

 The weather tendency detection device of the present invention is an aneroid type barometer that predicts weather by detecting whether the atmospheric pressure is rising, falling, or at a turning point, and a signal needle contacts a pair of contact cores. When the signal needle is in contact with any one of a pair of contact cores, the signal needle rotates even when the signal needle moves further in the same direction. The chain that rotates the shaft slips with respect to the rotating shaft 9 and the signal needle continues to stay in that position. The signal needle moves between the pair of contact cores and contacts one of the contact cores. The moving distance interval is adjusted by rotating the contact core holder.

[0005]

[Action]

 In the present invention, when the contact core holder is rotated, the relative positional relationship between the contact core and the signal needle is changed, and the interval distance at which the signal needle is rotationally moved can be changed. By operating the signal needle via the transmission mechanism, the signal needle comes into contact with one of the contact cores, and the change in climate can be accurately displayed.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The present invention detects a tendency of change in atmospheric pressure and expands and converts pressure fluctuation into mechanical displacement, and this pressure converting mechanism allows a signal needle to be rotated and a switch to be output as an electric signal to be switched. It has a switch mechanism. The weather tendency detecting device of the present invention is an aneroid type barometer which detects whether the atmospheric pressure is rising, falling, or is changing, and is an aneroid type barometer, and the signal needle 12 has two contact cores. When not in contact with 15a, 15b, the signal needle 12 rotates around the rotating shaft 9 according to the movement of the hollow 1 and the signal needle 12 is in contact with either of the two contact cores 15a or 15b. At this time, even if the hollow can 1 moves further in the same direction, the chain 14 rotating the rotating shaft slips against the rotating shaft 9 and the signal needle 12 continues to stay at that position. Between 15b, the signal needle 12 moves so that the moving distance interval d in which it contacts either the contact core 15a or 15b can be adjusted by rotating the contact core holder 8.

The pressure converting mechanism uses an empty can 1, and the empty can 1 is fixed to the lower plate 3 together with the U-shaped suspension spring 2. The hollow 1 and the suspension spring 2 are connected and fixed by a suspension plate 16. An operation arm (cankyu) 4 is fixed to the suspension spring 2 with a mounting screw 19. The tip of the operation arm 4 is connected to a chain 4 pulled by a coil spring 13, and the operation arm 4 changes in the bulge of the empty cauldron 1. The chain 14 is pulled by the displacement of the operation arm 4, and the rotary shaft 9 is rotated together with the balancer 11 fixed to the rotary shaft 9, and the signal needle (switch of the spring wire material fixed to the rotary shaft 9 (switch (Rod) 12 rotates between the contact cores (contact terminals) 15a and 15b for high pressure and low pressure, and contacts any one of the contact cores to convert the vertical change of atmospheric pressure into an electrical signal. The pressure fluctuation is displayed on the. One end of the chain 14 is connected to the operation arm 4 and the other end is connected to the coil spring 13, and the other end of the coil spring 13 is fixed to the spring mounting arm 18 of the lower plate 3. When the signal needle 12 comes into contact with the contact core, Since the chain 4 rotates the rotary shaft 9 by frictional contact, it does not rotate any further. The chain 14 may use a thread-shaped connecting member. The rotary shaft 9 is supported by a headstock 10, and the headstock 10 is fixed to a headstock mounting arm 17 of the lower plate 3 with mounting screws 20.

In the switch mechanism, the cylindrical contact core holder 8 is fitted in the cap 6 fixed to the lower plate 3 by the cap retainer 5 fixed by the mounting screw 21, and the cylindrical contact core holder 8 is fitted between the cap 6 and the contact core holder 8. A pair of connecting plates 7 are fixed to face each other, and a pair of graphite contact cores (fixed contacts) 15a and 15b for high pressure (for good weather) and low pressure (for bad weather) are faced to the connecting plate 7. The connection plate 7 fixed to the contact core holder 8 and connected to the contact cores 15a and 15b is connected to a control circuit to electrically indicate the atmospheric pressure fluctuation. The contact core holder 8 is fitted in the cap 6, and the cap 6 is fixed to the lower plate 3 by the cap retainer 5. Therefore, by rotating the cap 6, the contact core holder 8 is rotated. By doing so, the turning distance d of the signal needle (movable contact) 12 between the contact cores 15a and 15b can be changed.

When the atmospheric pressure rises, the rotary shaft 9 to which the balancer 11 is fixed rotates, and the signal needle 12 rotates to come into contact with the contact terminal (contact core 15a) on the atmospheric pressure rise side. In the opposite case, the signal needle 12 swings and contacts the contact terminal (contact core 15b) on the pressure lowering side. When the signal needle (switch rod) 12 comes into contact with either one of the contact terminals in this way, the chain 14 slips on the rotating shaft 9 and the rotating shaft 9 cannot rotate any more, and even if it continues. Even if the atmospheric pressure fluctuates, the rotary shaft 9 maintains its position.

Next, the operation will be described in more detail. With reference to the state in which the signal needle 12 is at the intermediate position between both contact terminals, when the atmospheric pressure rises above this, the signal needle 12 swings, and the contact on the pressure rise side is made. It contacts the terminal and outputs a signal current to the control circuit. When the atmospheric pressure decreases, the chain 14 is pulled and the rotating shaft 9 rotates, and at the same time, the signal needle 12 comes off from the contact terminal on the atmospheric pressure rising side, turning off the output of the signal current to the control circuit. When the atmospheric pressure further decreases, the signal needle 12 is oscillated and displaced, and finally contacts the contact terminal on the atmospheric pressure lower side, and outputs a signal current to the control circuit. When the atmospheric pressure rises, the chain 14 moves and the rotating shaft 9 immediately rotates, and at the same time, the signal needle 12 immediately follows and rotates to disengage the contact terminal that had been in contact with the signal needle 12 until then. Turn off the output.

FIG. 5 is an external perspective view of the barometer. Reference numeral 22 is a case, 23 is a display panel, 24 is a digital thermometer, and 25 is a start switch. FIG. 6 is an explanatory view of wiring, in which 26 is a control circuit, 27 is an output circuit, and 28 is a circuit board. L indicates a display lamp, lamp L1 indicates a case where the weather becomes good, L2 indicates a case where the weather changes at a turn of the weather, and L3 changes a direction where the weather becomes worse at a change of the weather. In the case of L4, the case of bad weather is displayed.

Usually, the movement amount of the signal needle 12 between the contact terminals is set to a distance within a range of atmospheric pressure change of about 4 mb, which is usually converted into an atmospheric pressure fluctuation amount. The present invention can be set so that it can respond to changes in atmospheric pressure of about 3 to 5 mb ± 0.5 mb.

[Effect of device]

 In the present invention, the displacement magnifying transmission mechanism of the empty can is mechanically reduced compared to the conventional type, variation in air pressure detection is small and the accuracy is improved, and the contact core distance between the contact points that the signal needle rotates and changes is changed. Since the adjusting mechanism used is only rotating, it is easy to adjust variations due to altitude. For example, in the conventional type, altitude correction was required at an altitude of 500 m or more, but in the present invention, the correction is not necessary up to an altitude of 2000 m.

[Brief description of drawings]

FIG. 1 is a side view of the entire apparatus, and a switch mechanism is shown in a circle.

FIG. 2 is a plan view of the entire device.

FIG. 3 is a side view of the entire apparatus.

FIG. 4 is a detailed sectional view of the switch mechanism, which is shown in a circle.

FIG. 5 is an external perspective view of a barometer.

FIG. 6 is an explanatory diagram of wiring relationships.

[Explanation of symbols]

 1 Empty purse 2 U-shaped suspension spring 3 Lower plate 4 Operation arm (Cankyu) 5 Cap retainer 6 Cap 7 Connection plate 8 Contact core holder 9 Rotating shaft 10 Shaft base 11 Balancer 12 Signal needle (switch rod) 13 Coil spring 14 Chain 15a Contact core (contact terminal for high pressure) 15b Contact core (contact terminal for low pressure) 16 Suspension plate 17 Shaft base mounting arm 18 Spring mounting arm 19 Mounting screw 20 Mounting screw 21 Mounting screw 22 Case 23 Display panel 24 Digital thermometer 25 Start Switch 26 Control circuit 27 Output circuit 28 Circuit board L Display lamp

Claims (1)

[Scope of utility model registration request] 1. A signal needle 1 in an aneroid type barometer.
When 2 is not in contact with the pair of contact cores 15a and 15b, the signal needle 12 rotates about the rotating shaft 9 in accordance with the movement of the hollow 1, and the signal needle 12 is either the pair of contact cores 15a or 15b. Chain 1 that rotates the rotating shaft 9 even when the hollow 1 moves further in the same direction when in contact with
4 is a mechanism in which the signal needle 12 continues to slide at the position where the signal needle 12 stays at that position, and the signal needle 12 moves between the contact cores 15a and 15b, so that either the contact core 15a or 15b is moved. A weather tendency detection device characterized in that the contact distance holder d is adjustable by rotating the contact core holder 8.