JP3051738B1 - Electric cord winding device - Google Patents

Abstract

The present invention is to reduce the cost of parts, reduce the number of assembling steps, and reduce the cost in a waterproof type. SOLUTION: At the same time, three sets of socket receiving terminals 30 are mounted on a mounting board 19, and one pilot lamp 31 is mounted, and these, the crossover wires 33 and the external connection wires are molded with a molding resin 35. To form a mold unit body 13 and the mold unit body 1
3 is disposed at the front end of the reel 7. Inside the drum 9, an external connection line of the mold unit body 13 is connected to one end 6 a of the electric cord 6 wound around the drum 9, and the connection portion is covered with a cover 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof type electric cord winding device.

[0002]

An electric cord winding device is generally used when an electric device such as a power tool is used in a place away from a power outlet installed in a house or the like. Specifically, pull out the electric cord wound on the reel of the electric cord take-up device, connect the power plug at the tip thereof to a power outlet installed in a house or the like, and insert the power plug of an electric device to be used. By inserting the terminal into the receptacle terminal of the outlet provided on the end plate of the reel of the electric cord winding device, the electric device can be used at a place away from the power outlet.

[0003] By the way, as this type of electric cord winding device, there is a waterproof type that can be used outdoors, for example, even in rain. Conventionally, the waterproof type has the following configuration.

That is, between a drum of a reel and front and rear end plates disposed at both ends in the axial direction of the reel, a support shaft of a support rotatably supporting the reel, and a reel supported by the support shaft An oil seal is provided between the end plate and the end plate to prevent water from entering the drum from the outside of the reel. It is designed to prevent water from splashing on the connection between the pilot lamp and the electric cord. However, the configuration in which the oil seal is provided has disadvantages in that the seal structure is large, the number of assembly steps is large, and the cost is high.

On the other hand, as a measure to cope with such a problem, a waterproof cover is attached to the back of the outlet panel to which the outlet and the pilot lamp are attached so as to cover the outlet and the like from the back side. There is a configuration in which the receiving terminal, the pilot lamp, and the electric cord are electrically connected in a waterproof state (for example, see Japanese Utility Model Publication No. 4-42929). In the case of this configuration, the seal structure is simplified, the number of assembling steps is reduced, and the cost can be reduced as compared with the case where an oil seal is used.

[0006] However, even with the structure provided with the waterproof cover, the outlet panel and the pilot lamp, which are constructed by incorporating the receiving terminal into the outlet case, are attached to the outlet panel, and these outlets, the pilot lamp and the electric cord are connected. Thereafter, it is necessary to attach a waterproof cover so as to cover the outlet and the pilot lamp. For this reason, there have been drawbacks that the cost of parts such as outlets is still high, the number of assembling steps is large, and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the invention is to provide a waterproof type, in which the cost of parts can be reduced, the number of assembling steps can be reduced, and the cost can be reduced. In providing the device.

[0008]

In order to achieve the above object, an object of the present invention is to provide a reel having a cylindrical drum and rotatably provided on a support, and an outlet for mounting on a mounting board. The receiving terminal is attached, and the receiving terminal is formed by molding with a molding resin, and a molded unit body disposed at one end in the axial direction of the reel, and one end in a waterproof state in the drum. An electrical cord electrically connected to the receiving terminal and wound around an outer peripheral portion of the drum.

According to such means, since the receptacle terminal for the outlet mounted on the mounting board is molded with the molding resin, the waterproofness of the receptacle terminal can be ensured. In addition, since the receptacle terminal for the outlet is directly molded with the molding resin, a case dedicated to the outlet is not required, and the cost of parts of the outlet can be reduced. Furthermore, since the receptacle terminal for the outlet is unitized in the molded unit body, there is no need to attach an outlet to the outlet panel when assembling the electric cord winding device, and the number of assembling steps can be reduced.

According to another aspect of the present invention, a reel having a cylindrical drum and rotatably provided on a support and a receiving terminal for an outlet are formed of a molded resin. A molded unit body that is molded and disposed at one axial end of the reel; and one end electrically connected to the receiving terminal in a waterproof state in the drum, and an outer periphery of the drum. And an electric cord wound around the part.

[0011] Also in this case, since the receptacle terminal for the outlet is formed by molding with a molding resin, the waterproofness of the receptacle terminal can be ensured. In addition, since a case exclusively for an outlet is not required and a mounting panel for mounting a receiving terminal is not required, the cost of parts can be further reduced. Also, since the receptacle terminal for the outlet is unitized in the molded unit body, there is no need to attach an outlet to the outlet panel when assembling the electric cord winding device, and the number of assembling steps can be reduced.

In this case, it is preferable that a cylindrical cap attaching portion for detachably attaching a cap for covering the receiving terminal from the front side is integrally formed on the front side of the mold unit body with a mold resin. In addition, a connection portion is provided on the back side of the mold unit body by covering an end of an external connection line electrically connected to the receiving terminal with a mold resin, and the external connection line is connected to the electric cord at this connection portion. It is preferable to adopt a configuration in which:

Further, it is preferable that one end of the electric cord is molded with the molding resin of the molding unit while electrically connected to the receiving terminal.
According to this, since the electric cord and the receiving terminal side of the mold unit body are connected in advance, it is not necessary to connect the electric cord and the receiving terminal side at the time of assembling the electric cord winding device. The number of steps can be further reduced, and the waterproofness of the connection portion can be further improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, in FIGS. 1 and 2 showing the entire configuration of the electric cord winding device,
The support 1 is formed by bending a single metal pipe, and the leg 2, the handle 3, and the support shaft 4 are integrally formed. A handle cover 5 is attached to the handle portion 3 for easy gripping. A reel 7 around which an electric cord 6 is wound is rotatably attached to the support shaft 4.
A power plug 8 having an insertion terminal 8a is provided at the end of the electric cord 6 on the winding end side.

The reel 7 comprises a cylindrical drum 9 made of synthetic resin, and a front end plate 10 and a rear end plate 11 provided at both ends of the drum 9 in the axial direction.
A cylindrical portion 12 for shaft insertion is provided integrally with the inside of the drum 9, and the cylindrical portion 12 is rotatably fitted to the support shaft portion 4. The front end plate 10 has a circular opening 10a at a portion corresponding to the opening 9a on the front side of the drum 9 and has a ring shape having a portion protruding radially outward of the drum 9, and will be described later. It is attached to the front of the drum 9 by screws 14 together with the mold unit 13 to be formed. A knob 15 for rotating the reel 7 is attached to the outer peripheral portion on the front surface of the front end plate 10.

The rear end plate 11 is formed in a disk shape having a portion closing the opening 9 b on the rear surface side of the drum 9 and having a portion projecting radially outward of the drum 9. Mounted on the rear. In the center of the rear end plate 11, an insertion hole 11a through which the support shaft 4 is inserted is formed. The tip of the support shaft 4 is located in the drum 9, and a shaft cap 17 for preventing the reel 7 from slipping forward is attached to the front end of the support. Is a positioning ring 18 for positioning the reel 7 rearward.
Is attached.

The mold unit 13 has the following construction. The mounting plate 19 serving as a base of the mold unit body 13 is made of synthetic resin, and has an opening 9 a on the front surface of the drum 9 and an opening 10 a of the front end plate 10.
It is in the shape of a disk that closes. FIG.
As shown in FIG. 7, a boss portion 20 having a mounting hole 20a at the center is provided so as to protrude forward, and around this boss portion 20, two rectangular tubular terminal mounting portions 21 protruding rearward are provided.
A total of six lamps are provided at three locations, one lamp mounting portion 22 having a short cylindrical shape protruding rearward, and one cylindrical portion 23 for connecting portion having a slit 23a protruding rearward.
Are provided, and three screw insertion holes 24 through which the screws 14 are inserted are formed in the outer peripheral portion.

On the front side of the mounting panel 19, outlet display portions 21a are respectively provided at portions corresponding to the front surfaces of two adjacent terminal mounting portions 21. Each of the terminal mounting portions 21a is provided on the outlet display portion 21a. Insertion hole 2 communicating with 21
1b is formed. Further, on the back side of the mounting board 19, L-shaped lead wire holding portions 25 (see FIG. 8) are provided at a plurality of positions located near the terminal mounting portion 21 and the lamp mounting portion 22. In the mounting board 19, a punching hole 25 a is formed at a portion corresponding to each lead wire holding portion 25. Further, the mounting plate 19 has a large number of holes 26.
Is formed over almost the entirety.

At the tip of the boss 20, a fitting projection 20b having a hexagonal outer peripheral portion is provided, and an outlet cover having three caps 27 integrally with the fitting projection 20b. A mounting portion 28a is fitted in a detented state from the front. The outlet cover 28 is attached to the boss 20 by screws 29.

A receiving terminal 30 for a socket made of a metal plate is mounted on each of the terminal mounting portions 21 described above.
The receiving terminal 30 is configured so that an insertion terminal of a power plug can be connected through the insertion hole 21b on the front surface. Further, a pilot lamp 31 is mounted on the lamp mounting portion 22 via a holder 32.
The connecting wire 33 connecting the receiving terminal 30 and the pilot lamp 31 and the external connecting wire 34 for external connection are
It is wired as shown in FIG. At this time, crossover 3
The external connection wire 34 is held by the lead wire holding portion 25 (see FIG. 8), and the external connection wire 34 is inserted through the slit 23a into the connecting portion cylindrical portion 23 (see FIG. 9).

The mounting board 19 is provided with a molding resin 35 made of a synthetic resin, in this case, vinyl chloride, so as to mold the receiving terminals 30, the pilot lamps 31, the connecting wires 33 and the external connecting wires 34. ing. The mold resin 35 is also provided on the front side and the back side of the mounting board 19, and the front side molding resin 35 and the back side molding resin 35 are connected through each hole 26 formed in the mounting board 19. It is in a state. Note that, on the front side of the mounting board 19, the outlet display portion 21a on the front surface of the terminal mounting portion 21 and the distal end of the boss portion 20 are not covered with the mold resin 35 and are exposed.

On the front side of the mounting panel 19, a short cylindrical cap mounting portion 36 is provided so as to surround each outlet display portion 21a.
Is formed integrally with the mold resin 35, and the cap 27 of the outlet cover 28 is detachably attached to the cap attaching portion 36. By attaching the cap 27 to the cap attaching portion 36, it is possible to prevent water from entering the inside of the cap attaching portion 36 from the outside. On the back side of the mounting board 19, a convex connecting portion 37 is provided by covering the connecting portion tubular portion 23 and the external connection wire 34 inserted therein with the mold resin 35.

The thus configured mold unit 13 has an opening 9a on the front surface of the drum 9 and the front end plate 1
0 is attached to the front end of the drum 9 with a screw 14 so as to close the opening 10a. As shown in FIG. 9, the external connection wire 34 is electrically connected to the one end 6 a on the winding start side of the electric cord 6 wound around the drum 9 at the connection portion 37 inside the drum 9. The connection portion is covered and sealed by a waterproof cover 38. In this case, the external connection line 34 of the connection portion 37 and the electric cord 6 are cut off a part of the connection portion 37 to expose the core wire of the external connection line 34, and the external connection line 34
And the core wire of the electric cord 6 are connected by crimping. The cover 38 is fitted to the connection portion 37 while covering the connection portion.

According to the first embodiment, the mounting board 19
3 sets of receiving terminals 3 for outlets on each terminal mounting portion 21
0, and the pilot lamps 31 are mounted on the lamp mounting portion 22.
Since the molding unit body 13 is formed by molding the external connection lines 34 together with the molding resin 35, the waterproofness can be reliably ensured. Moreover, since the receptacle terminal 30 for the outlet is directly molded with the molding resin 35, a case dedicated to the outlet is not required.
Outlet parts cost can be reduced. Further, since the receptacle terminal 30 for the outlet and the pilot lamp 31 are unitized in the molded unit body 13, there is no need to attach the outlet and the pilot lamp to the outlet panel when assembling the electric cord winding device.
The number of assembly steps can be reduced.

In this case, a cylindrical cap mounting portion 36 for detachably mounting a cap 27 for covering each receiving terminal 30 from the front side on the front side of the mold unit body 13.
Is formed integrally with the mold resin 35, so that the configuration can be simplified as compared with the case where the cap mounting portion 36 is formed of a separate member.

On the back side of the mold unit 13,
A connection portion 37 is provided by covering an end of an external connection line 34 electrically connected to the receiving terminal 30 and the pilot lamp 31 with a mold resin 35, and the external connection line 34 and one end of the electric cord 6 are provided at the connection portion 37. 6a, there is an advantage that the connection is easy and the connection portion can be covered with the cover 38 in a stable state.

Further, since the crossover wire 33 and the external connection wire 34 are held by the lead wire holding portion 25 on the back side of the mounting board 19, the crossover wire 33 and the external connection wire 34 can be held in a stable state. The molding with the molding resin 35 can be performed favorably. Also, since a large number of holes 26 are provided in the mounting board 19 and the molding resin 35 on the front side and the molding resin 35 on the back side are connected through these holes 26, the molding resin 35 is 19 can be prevented from peeling off as much as possible.

In the first embodiment, before the mold unit body 13 is molded with the molding resin 35, one end 6a of the electric cord 6 is connected to the external connection line 34. A configuration in which the one end 6a of the cord 6 is molded with the molding resin 35 can also be adopted. In such a configuration, since the one end 6a of the electric cord 6 and the external connection line 34 of the mold unit body 13 are connected in advance, the one end of the electric cord 6 is assembled when the electric cord winding device is assembled. 6a and external connection line 3
This eliminates the necessity of the work of connecting to the connecting member 4, thereby further reducing the number of assembling steps and further improving the waterproofness of the connecting portion.

FIG. 10 shows a second embodiment of the present invention. The second embodiment differs from the first embodiment in the following points. That is, the mold unit 40 provided at the end of the reel 7 on the front side of the drum 9
Are receiving terminals 30 for three sets of outlets (1 in FIG. 10).
), One pilot lamp 31, a crossover wire 33 and an external connection wire 34 connecting them, and a molding resin 35 obtained by molding them. The board 19 is not used. In this case, since the mounting panel 19 is not used, the boss 20 for mounting the outlet cover 28 and the screw 1
The screw insertion holes 24 through which the screws 4 are inserted are provided directly in the mold resin 35.

According to the second embodiment having such a structure, the mounting plate 19 in the first embodiment is not required, so that the cost of parts can be further reduced. Note that this second
Also in the embodiment, before the molding unit body 40 is molded with the molding resin 35, one end 6
a may be connected to the external connection line 34, and in this state, the one end 6a of the electric cord 6 may be molded with the molding resin 35.

The present invention is not limited to the above embodiments, but can be modified or expanded as follows. For example, a set of receiving terminals for an outlet is not limited to two cores, but may be three cores.

[0032]

As is clear from the above description, according to the present invention, the following effects can be obtained. According to the electric cord winding device of the first and second aspects, since the receptacle terminal for the outlet is formed by molding with the molding resin, it is possible to ensure the waterproofness of the receptacle terminal. In addition, since the receptacle terminal for the outlet is directly molded with mold resin, there is no need for a special case for the outlet, and the cost of parts can be reduced.
Since the receptacle terminal for the outlet is unitized in the molded unit body, there is no need to attach an outlet to the outlet panel when assembling the electric cord winding device, so that the number of assembly steps can be reduced, and thus the cost can be reduced. Become.

According to the electric cord winding device of the third aspect,
Since the cap mounting portion for detachably mounting the cap that covers the receiving terminal from the front side is integrally formed with the mold resin, the configuration can be simplified as compared with the case where the cap mounting portion is formed of a separate member.

According to the electric cord winding device of the fourth aspect,
Since the external connection line of the mold unit and one end of the electric cord are connected at the connection portion provided on the back side of the mold unit, there is an advantage that the connection can be easily performed.

According to the electric cord winding device of claim 5,
Since the one end of the electric cord and the external connection line of the mold unit body are connected in advance, it is not necessary to connect the one end of the electric cord and the external connection line when assembling the electric cord winding device. The number of steps can be further reduced, and the waterproofness of the connection portion can be further improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a first embodiment of the present invention.

FIG. 2 is an overall front view.

FIG. 3 is a front view of a mold unit body.

FIG. 4 is a rear view

FIG. 5 is a longitudinal side view.

FIG. 6 is a front view of the mounting panel alone.

FIG. 7 is a rear view

FIG. 8 is a sectional view of a lead wire holding portion.

FIG. 9 is a sectional view of a connecting portion.

FIG. 10 is a view corresponding to FIG. 1, showing a second embodiment of the present invention;

[Explanation of symbols]

1 is a support, 6 is an electric cord, 7 is a reel, 9 is a drum, 10 is a front end plate, 11 is a rear end plate, 13 is a mold unit body, 19 is a mounting plate, 21 is a terminal mounting portion, and 22 is a lamp mounting. Part, 25 is a lead wire holding part, 27 is a cap,
8 is an outlet cover, 30 is a receiving terminal, 31 is a pilot lamp, 33 is a crossover, 34 is an external connection line, 35 is a mold resin, 36 is a cap mounting portion, 37 is a connection portion,
38 denotes a cover, and 40 denotes a mold unit.

Claims (5)

(57) [Claims] 1. A reel having a cylindrical drum, rotatably provided on a support, and a receiving terminal for an outlet mounted on a mounting board,
A mold unit body formed by molding the receiving terminal with a molding resin, and disposed at one axial end of the reel; one end electrically connected to the receiving terminal in a state of being waterproof in the drum; An electric cord connected thereto and wound around an outer peripheral portion of the drum. 2. A reel having a cylindrical drum and rotatably provided on a support, and a receptacle terminal for an outlet molded by molding resin, and disposed at one axial end of the reel. A mold unit body provided, and an electric cord that is electrically connected to the receiving terminal at one end in a waterproof state in the drum, and is wound around an outer peripheral portion of the drum. Electric cord winding device. 3. A cylindrical cap mounting portion for detachably mounting a cap for covering a receiving terminal from the front side is formed integrally with a molding resin on the front side of the mold unit body. Or the electric cord winding device according to 2. 4. A connection portion is provided on the back side of the mold unit body by covering an end of an external connection line electrically connected to the receiving terminal with a mold resin, and the external connection line and the electric cord are provided at the connection portion. 3. The electric cord winding device according to claim 1, wherein the electric cord winding device is connected to the electric cord winding device. 5. An electric cord according to claim 1, wherein one end of the electric cord is molded with a molding resin of a molding unit body while being electrically connected to the receiving terminal.
Or the electric cord winding device according to 2.