JPH0434362B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an evaporation device that evaporates an insecticide while moving an insecticide-impregnated tape onto a heater.

[Conventional technology]

Conventionally, an evaporator that evaporates the insecticide while moving the tape impregnated with the insecticide onto a heater has a method of feeding the tape at a constant speed and heating it, as described in Japanese Patent Publication No. 16073/1983. There are devices that use a large-diameter winding drum to suppress changes in tape running speed as much as possible, as described in Japanese Utility Model Publication No. 51-51884, and
A method in which the heating temperature of the heating element is regulated as in Publication No. 55-43727, and a method in which the running speed of the tape is accurately kept constant to maintain uniform evaporation as in Publication No. 59-21882. and so on.

[Problem that the invention seeks to solve]

The above-mentioned device, which uses a time switch to automatically cut off the current to the heater and stop the tape feeding device after an arbitrarily set time has elapsed after the start of evaporation, is disclosed in Japanese Patent Publication No. 39-16073 and Utility Model Application No. The idea and device are disclosed in Publication No. 59-21882, but in both cases, the time switch is provided separately in conjunction with the rotating device or the drive motor, which inevitably increases the size of the device itself. It also had the disadvantage of increasing costs.

The present invention has been made with attention to these points, and it enables the miniaturization of the device as much as possible, the cost of the device is low, and the tape feeding speed can be maintained uniformly, and the evaporation time can be shortened. The purpose of the present invention is to provide an automatic evaporation device for insecticides with low running costs by using controllable and replaceable rolled tapes.

[Means for solving problems]

In the automatic evaporation device for insecticide-impregnated tape of the present invention, the time set axis 2 of the built-in timer 1 is
A drive wheel 6 is provided concentrically with the ratchet pawl 4 so as to be rotatable only in the return rotation direction of the time set shaft 2, and the insecticide-impregnated tape 3 is attached to the drive wheel 6 and has a narrow groove 5c for winding it up and manual rotation. A take-up spool 5 equipped with a flange 5a is frictionally connected via a spring 9, and a time set knob 10 for setting the evaporation time is fixed to the end of the time set shaft 2, and the time set knob 10 is turned to set the timer. By winding up the tape 1, the heater 8 is energized by the contacts in the timer, and the drive wheel 6 and the tape transfer roller 7 are interlocked to rotate synchronously, and the tape transfer roller 7 rolls the tape. The insecticide-impregnated tape 3 is fed out from the tape 3a and moved at a constant speed in contact with the upper surface of the heater 8, during which time the insecticide is evaporated from the tape, and the tape is wound up on the take-up spool 5.

[Effect]

In the device of the present invention, the timer itself is used as a feeding drive source for the insecticide-impregnated tape, and the tape is fed by using the force of return rotation of the time set shaft of the timer. The tape feeding speed can always be maintained at a constant speed by the tape transport roller 7, which makes it possible to omit a tape drive motor and reduce the cost of the device. When loading the tape, the tape can be easily attached to the take-up spool.

〔Example〕

Embodiments of the present invention will be described based on the accompanying drawings.

FIG. 1 is a perspective view showing the internal structure of the automatic evaporator of the present invention in an exploded state, and FIG. 2 is an external view of the entire device.

A timer 1 for setting evaporation time is disposed in one corner of the main body case 15 of the evaporator A.
The timer 1 is a known electrical device that is equipped with internal contacts for turning the circuit ON and OFF (not shown).
The contact turns ON when the time set shaft 2 is rotated clockwise.
However, when the time set shaft 2 is rotated clockwise by a certain angle and then released, the return operation is automatically started, and the time set shaft 2 is returned to the starting position and stopped, and the contact is turned OFF. The time set shaft 2 is made of elastic plastic or the like in order to drive a drive wheel 6 for rotationally driving a tape transport roller 7 and a take-up spool 5, which will be described later, only when the time set shaft 2 rotates back. A ratchet pawl 4 is attached,
A flat part 2a for fixing the dial is provided near the shaft end. The drive wheel 6 is rotatably mounted concentrically on the time set shaft 2, and the inner ratchet teeth 6a of a ratchet pulley portion 6b integrally provided at the end of the drive wheel 6 on the timer side. The ratchet pawl 4 attached to the time set shaft 2 is fitted to form a compact ratchet pulley portion 6b. The wave-shaped springs 9, 9 are connected to a pair of spring grooves 5 inside the take-up spool 5, which will be described later.
b, 5b in a fitted state. The take-up spool 5 is integrally provided with a collar 5a for manual rotation at its outer end, and the end of the insecticide-impregnated tape 3 is inserted and fixed into a narrow groove 5c carved on the outer periphery. The take-up spool 5 is fitted with a pair of springs 9, 9 in its inner spring groove 5b and fitted on the outside of the cylindrical shaft portion 6c of the drive wheel 6, and the combination of the drive wheel 6 and the take-up spool 5 Expose the end of the time set shaft 2 to the outside, fit the end of the time set shaft 2 into the hole 10a of the time set knob 10 (hereinafter abbreviated as dial 10), and use the flat part 2a of the shaft end to turn the knob 10. Secure with screws. At this time, the operating part of the knob 10 is made to come out of the case body 15, and the index 10b of the knob 10 matches the O index of the evaporation setting time scale plate 16 attached to a predetermined position on the outer surface of the case body 15. I'll do what I do. In addition, teeth for the timing belt 11 are provided on the outer periphery of the ratchet pulley portion 6b at the end of the drive wheel 6, and teeth for the timing belt 11 are provided at a predetermined position in the case body 15 above the take-up spool 5. The outer peripheries of the timing belt pulley part 7b and the ratchet pulley part 6b at the end of the tape transfer roller 7 are connected by a timing belt 11. Note that a knurl is carved on the outer periphery of the tape transport roller 7, and the tape transport roller 7 faces the outer peripheral roller 7.
A pressing spring 13 is attached to the inside of the case lid 14 so as to press the insecticide-impregnated tape 3 that is transferred in contact with the roller 7. When covering the tape, the pressing spring 13 presses the tape 3 surface so that the insecticide-impregnated tape 3 does not slip on the transfer roller 7 surface when it is fed.

A long roll-shaped tape 3a impregnated with an insecticide is stored in one corner of the main body case facing the tape transport roller 7 at a predetermined distance, and a storage section for the tape transport roller 7 and the roll-shaped tape 3a is stored. A heater 8 is disposed at a predetermined position between the inner wall 15c and is heated by electricity when the time set shaft 2 is rotated clockwise to set the evaporation time. Further, when the case lid 14 is placed over the main case 15, a presser spring 12 is attached to the case lid 14 to press the tape 3 from above the wall 15c and apply a brake so that the tape 3 does not sag on the heater 8 surface. It is located inside. This case lid 1
An evaporator port 14a with a predetermined size slightly larger than the heater 8 is provided on the upper surface of the heater 8, and elongated air holes 1 are provided on both sides of the evaporator port 14a to suppress the temperature rise inside the device.
A plurality of 4b are provided. Also, case lid 1
4 is provided with a pair of leaf springs 14c, 14c on each of the left and right sides to be coupled to the main body case 15 for convenient attachment and removal to the main body case 15 when replacing the insecticide-impregnated tape 3. In addition,
Reference numeral 17 denotes a pilot lamp that indicates the energized state when the device is connected to a power source.

This device is constructed as described above, but when using it, the case lid 14 is removed from the main case 15 and a long roll-shaped tape 3a impregnated with insecticide is placed in one corner of the main case 15. The outer peripheral surface of the tape transfer roller 7 is rotated so that the tape 3 is brought into contact with the upper surface of the heater 8, and the end of the tape 3 is inserted into the narrow groove 5c on the outer periphery of the take-up spool 5, and the collar 5a is inserted. The take-up spool 5 is rotated counterclockwise, and the tape 3 is wound around the take-up spool so that the tape 3 is brought into complete contact with the upper surface of the heater 3. At this time, the knob 10 remains stationary regardless of the rotation of the take-up spool 5, and its index 10
b is located at the O scale position of the scale plate 16 of the main body case 15. After installing the tape 3 in this way and confirming the correct installation state, the case lid 14 is placed over the main case 15. When evaporating the insecticide, turn the knob 10 clockwise to set the indicator 10b at a desired time scale. Figure 2 shows the case where the evaporation time is set to 12 hours. In this state, knob 10
When you release your fingertip from the button, the time set shaft 2 of the timer 1 starts rotating counterclockwise at a constant speed. Then, the ratchet pawl 4 engages with the inner ratchet tooth 6a of the ratchet pulley portion 6b of the drive wheel 6, causing the drive wheel 6 to rotate counterclockwise. The roller 7 is rotated counterclockwise at a constant speed in synchronization with the rotation of the time set shaft 2, and the take-up spool 5, which is frictionally connected by a pair of wave-shaped springs 9, is rotated counterclockwise, and the tape transfer roller is rotated counterclockwise. 7 unwinds the insecticide-impregnated tape 3 from the rolled tape 3a and moves it while sliding it on the upper surface of the heater 8 at a constant speed, during which time the insecticide is evaporated, and the take-up spool 5 frictionally connected to the drive wheel 6 is , the evaporated insecticide-impregnated tape 3 transferred at a constant speed is transferred to the cylindrical shaft portion 6c of the drive wheel 6.
It winds up reliably while slipping against the surface. Note that in the above, the circumferential speed of the winding portion of the take-up spool 5 is slightly faster than the circumferential speed of the tape transfer roller 7.

In this way, when the set time has elapsed, the time set shaft 2 returns to its original state and stops rotating.
The power supply to the heater 8 is cut off at the index 10 of the knob 10.
b indicates the O scale.

Next, when performing evaporation again, turn the knob 10 clockwise to the desired setting time position.
The drive wheel 6 and the take-up spool 5 are in a stopped state, and the ratchet claw 4 on the outer periphery of the time set shaft 2 is engaged with the inner ratchet tooth 6 of the ratchet pulley portion 6b of the drive wheel 6.
The time set shaft 2 rotates to the set time position by sliding on the surface of the a, and when the rotation of the knob 10 is released, the evaporation operation is performed as described above.

[Effects of the Invention] As is clear from the above description, according to the present invention, a conventional evaporation device that can control the time of pesticide evaporation has a timer in addition to the motor for feeding the pesticide-impregnated tape. This not only made it possible to omit the tape drive motor, but also made it possible to keep the tape feeding speed at a constant constant speed by using the accurate constant speed rotation of the timer's time set axis during return rotation. To provide a low-cost automatic evaporation device for insecticides, which can be easily installed and used with a rolled tape that can be easily maintained and has low running costs, and can be made extremely compact, and can always perform uniform evaporation. be able to.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded perspective view of the internal structure of the automatic evaporation device of the present invention, and FIG. 2 is an external view of the entire device. 1...Timer, 2...Time set axis, 3...
...Insecticide-impregnated tape, 3a...Rolled tape,
4... Ratchet claw, 5... Take-up spool, 6...
... Drive wheel, 6a ... Inner ratchet tooth, 7 ... Tape transfer roller, 8 ... Heater, 9 ... Spring, 1
0...Time set knob, 11...Timing belt.

Claims (1)

[Scope of Claims] 1. In a device that evaporates an insecticide while moving an insecticide-impregnated tape onto a heater, the time set shaft 2 of a built-in timer 1 is connected concentrically to the time set shaft 2 of the built-in timer 1 through a ratchet claw 4. A drive wheel 6 is provided to be rotatable only in the return rotation direction, and a narrow groove 5c is provided for attaching and winding the insecticide-impregnated tape 3 to the drive wheel 6.
A take-up spool 5 equipped with a collar 5a for manual rotation is frictionally connected to the time set shaft 2 through a spring 9.
A time set knob 10 is fixed to the end of the time set knob 10, and the time set knob 10 is turned to wind up the timer 1, thereby energizing the heater 8.
and a tape transfer roller 7 are interlocked to rotate synchronously, and the tape transfer roller 7 feeds out the insecticide-impregnated tape 3 from the rolled tape 3a and moves it at a constant speed while in contact with the upper surface of the heater 8. An automatic evaporation device for insecticide, characterized in that the insecticide is wound up by a roller. 2. The insecticide automatic evaporation device according to claim 1, wherein the drive wheel 6 and the tape transfer roller 7 are interlocked by a timing belt 11. 3 The drive wheel 6 has an inner ratchet tooth 6 that engages with a ratchet pawl 4 attached to the time set shaft 2.
Claim 1 characterized in that it has a.
An automatic evaporation device for an insecticide according to item 1 or 2.