JPH079877Y2 - Cord winding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cord winding device suitable for being installed in a device using an electric heater (heater) such as a rice cooker, a hot plate, and a coffee maker. .

2. Description of the Related Art When installing a cord winding device of this kind in a device using a heater as described above, it is necessary to install the cord winding device near the heater. A dedicated lead wire that withstands the heating temperature of 180 ° C is used.

Usually, such lead wires 105 and 106 are provided in the case 101 of the cord winding device (see FIG. 5) disclosed in, for example, Japanese Utility Model Publication No. 58-19829, which is proposed by the applicant of the present application.
One end is attached to the conductors 102, 103 which are attached near the center of the back surface, and the other end is attached to the heater in the device by screwing or the like.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the case of the above cord winding device, a power cord 105 wound around a reel (not shown) in the case 101,
The lead wires 105 and 106 are of a contact type (conductors 102 and 103 in elastic pressure contact with each other and in a sliding relationship with a current collector not shown).
Since the connection is made by means of, there is a possibility that the current collector may be pressed against the conductors 102 and 103 in a defective manner, and the reliability cannot be said to be high. In addition, since the electrical contacts as described above are required,
There was a problem that the cost was high.

Therefore, the present invention solves the above-mentioned problems of the related art, and a heat-resistant lead wire can be connected to a heater in a non-contact manner to improve reliability and at a low cost.
Moreover, it is an object of the present invention to provide a cord winding device that can reduce the size of the entire device.

Means for Solving the Problems In order to achieve the above object, the present invention winds a lead wire 15 around the second winding portion B of the reel 3 as shown in FIGS. , The inner end of which is fixed to the center of the reel 3 by being connected to the inner end of the power cord 8 and the outer end of which is fixed to the outer circumference of the case 1, and the lead wire outlet 18 provided on the outer circumference. It is characterized in that a predetermined length is taken out.

Action With the above configuration, the lead wire 15 wound around the second winding portion B of the reel 3 is in a reduced diameter or expanded state when the power cord 8 is taken out or wound up.

In this way, the lead wire 15 is connected to the power cord 8 without any contact, and there is no problem such as a defective contact pressure contact of the current collector with the conductor as in the conventional contact method.

Embodiment 1 In FIGS. 1 and 2, 1 is a case, 2 is a case cover, and a reel 3 is supported by a central shaft 5 of the case 1 and is rotatable inside a hollow formed by the case 1 and the cover 2. The spring 6 is installed so as to be urged in one direction.

The reel 3 includes an annular plate 3a that guides a power cord, which will be described later, in two stages on the left and right in FIG. 1 so that it can be wound, and a plurality of radially extending guide plates 3b that are slightly larger than the width of the cord. Have a space in the direction in one and have the first space.
The winding portion A and the second winding portion B are formed.

Reference numeral 8 is a power cord wound around the first winding portion A of the reel 3. The power cord 8 is wound in a direction opposite to the urging direction of the spring 6, and the outer end side is provided on the outer circumference of the case 1. It is taken out from the take-out port 10, and a plug 11 is attached to the taken-out outer end. The inner end of the power cord 8 is pulled out to the outer periphery of the boss portion 12 of the reel 3 supported by the central shaft 5, and the inner end is a crimp terminal 13 and the inner end of the lead wire 15 as shown in FIGS. In addition to being coupled, they are fixed together with the inner ends of the lead wires 15 by the cord fixing pieces 16 and 17 provided on the outer circumference.

As described above, the outer end side of the lead wire 15 connected to the power cord 8 is pulled out from the fixing pieces 16 and 17 through the outer circumference of the boss portion 12 to the inner circumference of the second winding portion B of the reel 3. The second winding portion B is wound in the opposite direction to the power cord 8. Then, it is fixed at a lead wire outlet 18 provided on the outer periphery of the case 1 and taken out to the outside, and the outer end of the taken out lead wire 15 is screwed and attached to a heater in a device (not shown). The crimp terminal 19 is attached.

In the above description, the length of the lead wire 15 is shorter than the length of the power cord 8, and is usually 2/3 of that. Further, the lead wire 15 is in a state where the power cord 8 is fully unwound to the second winding portion B when the power cord 8 is completely wound around the first winding portion A of the reel 3.

The operation of the above embodiment will be described.

To take out the cord 8 from the case 1 when the power cord 8 is completely wound inside the case 1, a cord outlet
Pull code 8 from 10. By this pulling out, the reel 3 is rotated in the direction of the arrow in FIG. 2 against the bias of the spring 6, and the power cord 8 wound around the first winding portion A of the reel 3
Is gradually taken out from the outlet 10.

When the withdrawal of the power cord 8 is stopped at a predetermined length, the reel 3 is rotated in the opposite direction by the bias of the spring 6 and the cord 8 is wound up.
By the operation of a stopper mechanism (not shown) provided in the case 1, the rotation of the reel 3 is stopped, the cord 8 is not wound any further, and is stopped at that position. On this occasion,
The lead wire 15 wound around the second winding section B of the reel 3 is gradually expanded from the maximum expanded state, and the cord 8
Is completely taken out of the case 1, the minimum diameter reduction state is obtained.

Next, in order to wind the power cord 8 taken out above on the reel 3, the cord 8 is pulled out again. As a result, the operation of the stopper mechanism is released, the reel 3 is rotated by the bias of the spring 6, and the cord 8 is wound around the first winding portion A of the reel 3 in the state before being taken out. At this time, the lead wire 15 in the smallest diameter-reduced state is gradually expanded, and when the cord 8 is completely wound up, it is in the original expanded state again.

Since the structure and operation of the stopper mechanism described above are conventionally known, the description thereof will be omitted including the drawings. still,
Although the lead wire 15 is wound in the opposite direction to the power cord 8 in this embodiment, it may be wound in the same direction.

Effect of the Invention This device has the above-mentioned configuration, and since the lead wire is connected to the power cord in a non-contact method, the reliability can be improved and the cost can be reduced as compared with the conventional contact method. it can. Moreover, the structure without contacts can be simplified, and the lead wire is connected to the power cord without contact, so that the space for accommodating the lead wire can be reduced and the entire device can be made smaller. There is an excellent effect.

[Brief description of drawings]

1 is a vertical sectional side view showing an embodiment of the present invention, FIG. 2 is a vertical sectional front view of the same reel unit, and FIG. 3 is a perspective view showing a connecting portion between a lead wire and a power cord in FIG. FIG. 4 is an overall front view of the above, and FIG. 5 is an overall front view corresponding to FIG. 4 showing a conventional example. 1 ... Case, 2 ... Case cover, 3 ... Reel, 5
…… Center shaft, 6 …… Spring, 8 …… Power cord, 10 …… Cord outlet, 13 …… Crimping terminal, 15 …… Lead wire, 16,17
...... Fixing piece, 18 ...... Lead wire outlet, A ...... First winding section, B ...... Second winding section

Claims (1)

[Scope of utility model registration request] 1. A reel is rotatably installed in a case and is urged in one direction.
A cord winding device having a second winding portion, in which a power cord is wound around the first winding portion in a direction opposite to the urging direction of the reel, wherein the second winding portion of the reel is provided. A lead wire is wound, the inner end of the lead wire is fixed to the center of the reel by being joined to the inner end of the power cord, and the outer end of the lead wire is fixed to the outer circumference of the case and is provided on the outer circumference. A cord winding device, wherein a predetermined length is taken out from a lead wire outlet.