JP2998008B2 - Rotary drum recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary drum type recorder such as a thermo-hygrometer.

[0002]

2. Description of the Related Art A rotary drum recorder is known as a device for recording environmental information or weather information such as seismic intensity, temperature, humidity, atmospheric pressure, nitrogen dioxide concentration in the atmosphere, and carbon monoxide concentration. Recording is performed on chart paper wound around a rotationally driven drum via recording means that operates in response to an output of a sensor. As a driving mechanism of a drum of a conventional rotary drum type recorder, one having the following configuration is typical.

That is, in the first configuration, a motor as driving means is fixed to a lower surface of a main plate that rotatably supports a drum on an upper surface, and a gear of the motor passes through a hole of the main plate. The gear is engaged with a gear provided on a flange at the lower end of the drum to rotate the drum.
Also, a battery serving as a power supply for supplying energy to the motor and an operation panel for setting each operation of the recording unit and the driving unit are separately arranged on the ground plate on which the motor is mounted .

In the second configuration, the drum itself includes a motor as driving means, a battery as a power supply for supplying energy to the motor, and an operation panel for setting each operation of the recording means and the driving means. The drum is mounted on a center axis of the main plate so as to be freely rotatable by mounting via a mounting plate. The gear of the motor meshes with a gear (fixed sun gear) fixedly provided on the main plate, and the rotation of the motor causes the gear of the motor to planetarily rotate around the gear to provide a drum including a drive mechanism. The whole is rotated (self-propelled).

[0005]

However, in the first configuration, since the drum is arranged on the upper surface of the base plate and the motor and the battery are arranged on the lower surface, the external dimensions of the apparatus are increased, and in addition to this, The mounting work is complicated because the motor, battery, and operation panel are separately attached to the main plate, and the shape of the main plate is complicated according to the mounting position of the motor, battery, and operation panel. Was difficult.

In the second structure, the motor, the battery, and the operation panel are unitized together with the drum, so that it is easy to attach the motor to the main plate, but it is not necessary to rotate the drum when rotating it. Will rotate to the element. For this reason, a large power is required for the motor and energy consumption is large.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary drum type recorder which can easily assemble, replace parts and repair, and can rotate a drum with a small power.

[0008]

In order to achieve the above object, according to the present invention, a drive unit necessary for driving the drum is unitized and arranged in a hollow portion of the drum, and the rotation is performed by the drum and the drum. Only the turntable for mounting is used. With this configuration, the entire apparatus can be made as compact as possible, the driving load can be reduced, and assembling work, component replacement, and repair can be easily performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a rotary drum type recorder according to the present invention, a rotary base on which a drum can be detachably mounted is rotatably supported on a base of the recorder. On this base, inside the drum, and drive means for rotationally driving the turntable recording means and sets each actuation of the drive means the control panel and is configured mounted on a common mounting plate unit
Is fixedly provided .

The driving means includes a motor, a power supply for supplying energy to the motor, and a power transmission gear train for transmitting the power of the motor. is there.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a rotating drum type thermo-hygrometer will be described in detail. In FIG. 1, a chart paper 3 is wound around a drum 2 located on a main plate 1.
Recording means 4 and 5 for recording temperature and humidity values on chart paper 3
Is composed of pens 4a, 5a and pen holders 4b, 5b for holding the pens 4a, 5a. Pen holder 4b,
5b is provided on the mounting portion 6 so as to swing freely.
The tips of the pens 4a and 5a are in contact with the pen. Further, a temperature sensor and a humidity sensor (not shown) are installed inside the detection unit 7 in which a number of holes are drilled to make the same state as that of the outside of the rotary drum type thermo-hygrometer. It consists of hair and the like. The pen holders 4b and 5b swing up and down in response to the outputs of the temperature sensor and the humidity sensor, respectively.

As shown in FIG. 2, a boss 1
and a support shaft 1b for supporting the second wheel & pinion 10 and a guide portion 1 for guiding a turntable 8 to be described later on the outer peripheral portion of the main plate 1.
d is protrudingly provided, and slightly inside,
A projection 1c for supporting the support wheel 9 is provided. Although not shown, a plurality of boss portions 1a are provided,
Are provided in at least three sets.

A turntable 8 for detachably receiving the drum 2 has a cylindrical shape, and has teeth 8a and guide protrusions 8b on its inner surface.
Is provided on the guide portion 1d. The tooth portion 8a of the turntable 8 meshes with the center wheel & pinion 10, and the guide projection 8b of the turntable 8 fits into the groove of the plurality of support wheels 9, so that the turntable 8 can rotate with respect to the main plate 1. is there.

The drum 2 is detachably mounted on the outer periphery of the turntable 8, and the lower plate 2 a of the drum 2 is formed in a cylindrical shape corresponding to the shape of the turntable 8. The drum 2 rotates integrally with the rotation. Both ends (not shown) of the chart paper 3 wound around the outer periphery of the drum 2 are fixed to the drum 2 by fixing members (not shown).

The mounting plate 11 is provided with a motor 12, a battery holder 14 for holding a battery (power supply) 13 for supplying energy to the motor 12, and an operation panel 15 for setting the rotation speed of the drum 2. The panel 15 is provided with a rotation speed switch 15 a for the drum 2. That is, the switch 15a sets the time required for one rotation of the drum 2 to be one day, one week, or the like. The motor 12 is provided with a motor gear 12a.

In this embodiment, the turntable 8 is constituted by the motor 12, the battery 13, the motor gear 12a and the second wheel 10.
, And a power transmission wheel train for transmitting the power of the motor 12 by the motor gear 12a and the second wheel & pinion 10.

As described above, the second wheel 1 of the driving means 16
The portion excluding the reference numeral 0 and the operation panel 15 are mounted on the mounting plate 11 to form a single unit. The unit is mounted on the boss 1a of the main plate 1 and fixed to the main plate 1 with screws. This unit is located in the hollow portion of the drum 2 when the drum 2 is set on the turntable 8, and in the assembled state of the unit, a motor gear 12 a penetrating downward from the mounting plate 11 is supported by the support shaft 1 b. 2
It is engaged with the shift wheel 10.

By unitizing in this manner, the unit can be attached to and detached from the main plate 1, so that the assembling workability is improved. Replacement and repair of the operation panel 15, the motor 12, the power source 13, the motor gear 12a, etc.
It can be performed in a state where it is detached from the unit, which is efficient.

[0019]

[Operation] For example, when the drum 2 is set to rotate once per day (24 hours) by the switch 15a, and a start switch (not shown) of the rotary drum type thermo-hygrometer is pressed, the motor 12 operates and the motor gear 12a Rotates at a constant speed, and rotates the tooth portion 8a of the turntable 8 via the second wheel & pinion 10. Therefore, the drum 2 rotates at a constant speed (one rotation / day) in one direction. At this time, the tips of the pens 4a and 5a are in contact with the chart paper 3 wound around the drum 2,
As time passes, the pen holders 4b and 5b receive the outputs of the temperature sensor and the humidity sensor and swing up and down, respectively. For this reason, the temperature and the humidity at each time of the day are recorded on the chart paper 3 in the form of continuous graphs.

The present invention is not limited to the present embodiment, but can be variously modified. For example, in this embodiment, the operation panel 1
Reference numeral 5 designates the setting of the rotation speed of the drum 2, that is, the operation of the driving means. However, the present invention is not limited to this. Further, in this embodiment, the motor 12, the battery 13, the motor gears 12a and 2
Driving means 16 for rotating the drum 2 by the count wheel 10
Although it is composed. However, the present invention is not limited to this, and the second wheel & pinion 10 may be omitted so that the motor gear directly meshes with the gear 8a of the turntable 8. Further, in this embodiment, the motor 12, the power source 13, and the motor gear 12a are mounted on a common mounting plate with the operation panel to form a unit. In addition to this, the second wheel & pinion 10 is also mounted on this mounting plate. It may be unitized. Further, in this embodiment, the sensor detects temperature and humidity, but may detect only temperature or only humidity. At this time, the number of pens and pen holders may be one. In addition to the sensors that detect temperature and humidity, the sensors can be replaced with sensors that detect environmental information or weather information such as seismic intensity, atmospheric pressure, atmospheric nitrogen dioxide concentration, and carbon monoxide concentration.

[0021]

According to the rotary drum type recorder of the present invention, since the driving means for rotating the drum is arranged inside the drum, no extra space is required for the driving means, and therefore the entire apparatus is reduced in size. In addition to the structure in which only the drum and the turntable are rotated, the load torque is reduced, the power consumption can be reduced, the life of the power supply can be extended, and the operation panel and the driving means can be mounted in common. Since the unit is attached to a plate to form a unit and arranged inside the drum, assembly work, component replacement, and repair become easy.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the above.

[Brief description of reference numerals]

 2 Drum 3 Chart paper 4, 5 Recording means 8 Turntable 8a Teeth of turntable 10, 12a Power transmission train 11 Mounting plate 12 Motor 13 Power supply 15 Operation panel 16 Drive means

Claims (2)

(57) [Claims] 1. A rotary drum type recorder for performing recording via a recording means which operates by receiving an output of a sensor on a chart paper wound around a rotationally driven drum, wherein a base of the recorder is provided with: A rotatable table on which a drum can be detachably mounted is rotatably supported. On the base, a driving unit for rotating and driving the rotary table inside the drum, the recording unit, and the driving unit A rotary drum type recorder, wherein a unit configured by attaching an operation panel for setting each operation to a common mounting plate is fixedly provided . 2. The vehicle according to claim 1, wherein the driving means includes a motor, a power supply for supplying energy to the motor, and a power transmission wheel train for transmitting the power of the motor. A rotary drum type recorder provided with a tooth portion that meshes with a transmission wheel train.