JPH0219035Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric heating transpiration device with a self-rewinding cord reel.

Prior art and its problems Electric heating evaporation devices equipped with automatically rewinding cord reels are well known, and various types have been proposed, but all of the conventional structures have a However, the electric heating evaporation section was installed, making it bulky and unsightly in terms of design, as well as increasing material and packaging costs. In this case, for example, as seen in Japanese Utility Model Application Publication No. 56-95235, it is possible to reduce the bulk of the device to some extent by integrally equipping the rotating reel section of the code rule with an electric heating evaporation section, but this does not make the rotating system Due to the increased weight, a large rewinding spring must be used as the unwinding spring, which requires a large amount of force to pull out the cord, resulting in decreased operability. Due to the strain placed on the parts, electrical troubles such as contact failures are likely to occur.

The present invention was made with the aim of eliminating these conventional problems.

Means for Solving the Problems The present invention provides an electrically heated evaporator equipped with an automatic rewinding cord reel, in which the main body 11 of the cord reel 1 is box-shaped and annular, and has a central cavity 2; A hollow fixed shaft 1 that isolates the cavity 2 from the inside of the main body 11
2, and the fixed shaft 1 is disposed within this main body 11.
2, and a constant force spiral spring 10 that constantly biases the reel 13 in the cord rewinding direction at an eccentric position of the main body 11. On the other hand, at least a part of the electric heating evaporation part 3 installed on the main body part 11 is accommodated in the central space 2 of the main body part 11, and the cord 15 is restrained at an arbitrary feeding position and this restrained state is maintained. A restraining and releasing mechanism that releases the cord 15 using the feeding operation as a key is provided between the reel section 13 and the main body section 11, and the cord 15 of the rotary reel section 13 and the electric heater 8 of the transpiration section 3 are connected to each other.
Movable contact 18 provided on the reel portion 13
a, 18b and fixed side contacts 21a, 21b provided on the main body 11 so as to be electrically connected to the contacts 18a, 18b in sequence. Pertains to.

Function According to the present invention, the main body part 11 of the cord reel 1 is box-shaped and annular, and the rotating reel part 13 is similar to the main body part 11.
A spring 10, which is rotatably fitted onto a fixed shaft 12 in the central part and which always biases the reel part 13 in the unwinding direction, is of a constant force spiral type and is set at an eccentric position of the main body part 11. . Thus, the central space 2 of the main body 11 becomes a completely empty space, which can be used as an installation space for the electric heating evaporation section 3, contributing to the downsizing of the device. Furthermore, since the central space 2 of the main body part 11 is used as the installation space for the evaporation part 3, the only rotating system is the rotating reel part 13 as before, and there is no increase in weight, so it can be used as an automatic rewinding spring as well. A weak spring force is sufficient, the cord 15 can be fed out with a small operating force, and the device can be made more compact without deteriorating operability or adversely affecting the electrical system or the like.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

The main body part 11 of the automatic rewind type cord reel 1 is box-shaped and annular, and an electric heating evaporation part 3 is housed in a central space 2 of the main body part 11.

As the electric heating evaporation section 3, in FIGS. 1 to 3, the chemical solution 6 in the container 5 sucked up from the suction wick 4 is heated by an electric heating device that surrounds the exposed upper end portion 4a of the wick 4 with a gap 7 therebetween. A suction core system heated by a heater 8 is shown, and a container 5 of the transpiration section 3 is housed in the central space 2 while being received by a bottom cover 11b, and a portion other than the container 5 is installed. As usual, the main body part 11
Fixedly installed on top. According to this embodiment, the volume of the device can be reduced by the depth of insertion of the container 5 into the central cavity 2.

4 and 5 show a method of heating a transpiration mat (not shown) using a plate-shaped heater 9 as the heating transpiration section 3. is accommodated, and a cap 3a with a transpiration port _3a1 is installed at the upper end of the main body 11,
This embodiment also allows the device to be considerably bulkier.

A rotary reel section 13 and a constant force spiral spring 10 for constantly biasing the reel section 13 in the rewinding direction are housed and installed in the main body section 11 of the automatic rewind type cord reel 1.

The reel section 13 is rotatably fitted onto the hollow fixed shaft 12 at the center of the main body section 11, and
It is completely isolated from the heating evaporation section 3 installed inside through the shaft 12, and has a structure that does not cause an increase in weight.

On the other hand, the spring 10 has a spring shaft 1 fixed to the reel part 13, as schematically shown in FIGS.
4 through a drum 14a, and the outer end of the spring 10 is fixed to a fixed shaft 12 of the main body 11. FIG. 6 shows the situation when the cord is stored, and FIG. 7 shows the situation when the cord is fed out. When the cord is fed out, the reel portion 13 is always subjected to a spring force in the unwinding direction. As shown in FIGS. 8 and 9, a spring shaft 14 is fixed to the bottom surface of the main body portion 11, and the outer end of the constant force spiral spring 10 fitted to the spring shaft 14 is connected to the collar portion 13a of the reel portion 13. It may be fixed to . Since there is no increase in the weight of the rotating reel portion 13, the spring 10 may have a relatively small spring force as before, and good operability can be obtained.

The cord reel 1 has the cord 15 restrained at an arbitrary feeding position, and the cord 15 is held in this restrained state.
A restraint and release mechanism is provided that can be unlocked using the feeding operation as a key.

An example of a restraining and releasing mechanism is shown in FIGS. 10 and 11. This mechanism has a guide pin 16a at the tip, and the reel portion 13 is rotated about a pivot 16b at the base end. A lever 16 attached to the upper surface (see FIG. 10) and a guide groove 17 (11th
(see figure). The guide pin 16a of the lever 16 is pressed against the back surface of the cover plate 11a by a spring piece 18 (see FIG. 10) that is pressed upward from the top surface of the reel part 13, and is kept in contact with the back surface of the cover plate 11a. It travels within the guide groove 17.

The guide groove 17 is an outer annular groove 17a that allows the guide pin 16a of the lever 16 to move freely in the direction of arrow a in FIG. 11 when the cord 15 is unwound.
, an inner annular groove 17b that freely moves in the direction of arrow b during feeding, and an outer annular groove 17a that moves the guide pin 16a using the feeding operation of the cord 15 as a key.
The guide pin 16a is moved from the inner annular groove 17b to the outer annular groove 1 using the rewinding operation of the cord 15 as the key.
7a and a V-shaped transition groove 17d that is temporarily restrained within the outer annular groove 17a.
The course change groove 17c and the crossing groove 17d are not shown in the figure.
They are formed in two locations at 180° intervals.

The operation of the restraining and releasing mechanism of the above configuration will be explained based on FIG. 11. When the cord 15 is completely rewound onto the reel, the guide pin 16a is located at, for example, point A within the outer annular groove 17a. ing. When the cord 15 is fed out against the spring 10 (see FIGS. 6 and 7) from this state, the guide pin 16a moves in the direction opposite to the arrow a within the outer annular groove 17a, and moves to the nearest course changing groove. 17c, the course is immediately changed into the inner annular groove 17b. The course change groove 17c is
It has a planar arcuate convex stepped portion _17c1 extending across the outer annular groove 17a, and the guide pin 16a is guided from outside to inside along the wall of this convex stepped portion _17c1 .
The convex stepped portion _17C1 becomes flat after passing through a gentle downward slope portion where a line is drawn.

Guide pin 16 whose running path has been changed into inner annular groove 17b
a marks the inside of the groove 17b with an arrow b while the cord is being fed out.
After the cord rotates in the direction and finishes feeding out a predetermined length of cord, it stops at, for example, a point in the inner annular groove 17b.

Next, when the cord 15 is slightly retracted by the action of the spring 10, the guide pin 16a travels in the inner annular groove 17b from point ro in the direction opposite to the arrow b, and guides the nearest V-shaped cross groove 17d. As soon as it crosses from the inner annular groove 17b into the outer annular groove 17a, it is locked in the depths of the crossing groove 17d as shown in the figure, and thereafter this locked state is maintained by the action of the spring 10. Therefore, the cord 15 is restrained at any given position. The V-shaped transition groove 17d has a convex stepped portion 1 extending into the inner annular groove 17b on the entrance side.
7d ₁ , and the guide pin 16a is guided from the entrance to the back along the wall of this convex stepped portion 17d ₁ . This convex step portion _17d1 becomes flat after passing through a gentle downward slope portion indicated by a line.

When the cord 15 is let out a little against the spring 10 from this restrained state, the guide pin 16a enters the outer annular groove 17a from the locking position through the exit and stops at, for example, the position of point C. The V-shaped crossing groove 17d has a convex stepped portion _17d2 on the exit side, and the guide pin 16a protrudes from the exit.
cannot return to the crossing groove 17d again. When the cord 15 is released in this state, the guide pin 16
a is the outer annular groove 1 from the position of point C by the action of the spring 10.
7a in the direction of arrow a, and this running movement continues until the cord 15 is completely rewound.
After rewinding, it stops at point A, for example, and prepares for the next unwinding operation. Due to the cooperative action of the guide pin 16a and the guide groove 17, the cord 15 can be restrained at any desired feeding position, and from this restrained position, the cord 15 can be released and rewound using a slight feeding operation as a key.

Further, as shown in FIG. 10, contact springs 18a and 18b connected to the cord 15 are installed at two locations on the upper surface of the reel portion 13.
a, 18b are the cover plate 11 shown in FIG.
Points 20a, 20b are connected to annular slide rings 19a, 19b provided in two concentric rows on the back surface of
from the contact point 2 toward the top surface of the cover plate 11a.
1a and 21b are punched out. This contact point 21
a and 21b are shown in FIG. 8, and are connected to the heater of the electric heating evaporation section 3 via lead wires in the usual manner.

Effects According to the present invention, the central void 2 of the cord reel 1
Since the electric heating evaporation section 3 is installed inside the device, the entire device can be made compact and have a good appearance, and the manufacturing cost can be reduced because material costs can be reduced, and the device can also be made small in size. Advantages such as reduced packaging costs can be obtained.

Furthermore, the only member that rotates as the cord is fed out is the rotating reel section 13 as before, and there is no increase in the weight of the rotating system. can be performed with a small amount of force as before, and the equipment can be made more compact without deteriorating quality or performance.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a plan view, FIG. 3 is a vertical sectional view taken along line A to A in FIG. 2, FIG. 4 is a plan view showing another embodiment of the present invention, and FIG. A vertical cross-sectional view taken along line B, FIGS. 6 and 7 are diagrams schematically showing an example of the installation situation of a constant load spiral spring in a cord reel, and FIG. FIG. 9 is a cross-sectional view taken along line C-C in FIG. 8, FIG. 10 is a plan view of the cord reel with the top cover removed, and FIG. 11 is a cross-sectional view of the top cover of the cord reel. It is a back view. In the figure, 1 is a cord reel, 2 is a central cavity thereof, and 3 is an electric heating transpiration section.

Claims (1)

[Scope of utility model registration request] In an electrically heated transpiration device equipped with an automatic rewinding type cord reel, the main body 11 of the cord reel 1
is box-shaped and annular, and has a central hollow space 2 and a hollow fixed shaft 12 that isolates the hollow space 2 from the inside of the main body part 11; The rotating reel unit 13 rotates in a state where
and a constant force spiral spring 10 that constantly urges the reel part 13 in the cord rewinding direction at an eccentric position of the main body part 11, while the central cavity 2 of the main body part 11 houses the main body part At least a part of the electric heating transpiration unit 3 installed on the cord 1 is accommodated, and the cord 1
The reel portion 13 and the main body portion 1 are connected to each other by a restraining and releasing mechanism that restrains the cord 15 at an arbitrary feeding position and releases this restrained state using the feeding operation of the cord 15 as a key.
1 and the cord 1 of the rotating reel 13.
5 and the electric heater 8 of the transpiration section 3 are movable contacts 18a and 18b provided on the reel section 13.
and a fixed side contact 21 provided on the main body 11 so as to be always electrically connected to the contacts 18a and 18b.
An electric heating evaporation device characterized in that the electrical heating evaporation device is electrically connected to the terminals a and 21b sequentially.