JPS6234935Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cord winding device for various electrical appliances.

In conventional devices of this kind, in which a reel having a disc-shaped main body is rotatably installed in a case while being biased to one side, and a cover is attached,
The reel has a reel body and brush holder integrally molded from thermoplastic synthetic resin, the brush is attached to the brush holder by heat welding, and the stopper lever is caulked to the case.
Before assembling the whole thing, so-called sub-assembly work such as attaching the brush to the same holder and attaching the stopper lever to the case takes time and labor, reducing work efficiency.Furthermore, since the reel is made of resin and is lightweight, In order to reduce the inertia during return, a brake had to be attached, and in addition, the overall shape and dimensions became larger, resulting in higher prices, and other drawbacks.

This invention eliminates the drawbacks of the conventional ones as described above, simplifies the subassembly work, and provides a cord winding device that is compact and easy to assemble as a whole, increasing work efficiency. The purpose is to

In order to achieve the above-mentioned object, this invention has a main body of the reel made of a sheet metal, and a brush holder made of synthetic resin in which a brush is integrally assembled at the center of one side of the body made of the sheet metal by insert molding. At the same time, a winding spring is provided in the center of the other side, and a stopper lever, which is formed near the outer periphery and has approximately the same height as the mainspring, is removably supported, and the surface of this stopper lever is attached to the case. It is characterized by being brought into contact with the inner surface of the.

An embodiment of this invention will be described below with reference to the drawings.

Reference numeral 1 denotes a case in which a reel 2 is housed and a cover 3 is attached.

The reel 2 has a main body 4 made of sheet metal, with a brush holder 5 made of synthetic resin in the center on one side, a winding spring 6 in the center on the other side, and a stopper lever 7 near the outer periphery. supported.

Bipolar brushes 8 and 9 are securely attached to the brush holder 5 by insert molding during molding, and the holder 5 has slots 3 formed at its bottom.
2, the upright pieces 26 (5th and 6th) raised from the main body 4
(Fig.) is inserted and the cord 1 is further ejected from the main body.
It is attached to the main body 1 by being held by the upright portions 12 of the guide pieces 11 of 0. 7th, 8th
In the figure, 27 is a center hole that slides into a locking post 18 (described later), 28 is a guide wall for the cord 10, 29 is a through hole, 30 is a block, and the entire holder 5 is made of thermosetting synthetic resin. Then, since it is highly heat resistant, there are no restrictions on the electrical appliances to which it can be attached.

The mainspring 6 has its outer end locked to one of a plurality of upright enclosure pieces 13 raised from the main body 4, and is entirely enclosed by the enclosure pieces 13.

The stopper lever 7 is pivoted by simply fitting a through hole provided at its base end into a cylindrical bearing wall 14 raised from the main body 4 without being caulked. Reference numeral 15 denotes a stopper spring for restraining the stopper lever 7. Although the lever 7 and the spring 15 are installed differently, they have exactly the same structure as the conventional one. Stopper lever 7
The height of the mainspring 6 is approximately the same as that of the mainspring 6, and after the entire assembly is completed, its surface comes into contact with the inner surface of the case 1 and slides, thereby preventing it from falling off, thereby eliminating the need for caulking. This reduces the overall wall thickness.

As a precaution, a brake piece 16 is installed on the main body 4 so as to be slidable only in the radial direction by means of a guide plate 17, but this is actually unnecessary.

The reel 2 as described above is housed in a case 1. The case 1 is made of synthetic resin, and a locking post 18 to which the inner end of the mainspring 6 locks is established at the center of the inner surface of the case 1. A locking protrusion 19 with which the stopper lever 7 locks is provided nearby.

The cover 3 is made of sheet metal and has an opening 21 in the center.
A contact ring plate 20 made of thermosetting synthetic resin and having large and small contact rings 22 and 23 embedded in the back surface by insert molding is fitted into this, and at this time, a fan-shaped protrusion 24 formed on the surface of the plate 20 is inserted into the cover 3. It fits and locks into the opening of the same shape. A protrusion 25 is provided at the center of the back surface of the plate 20 to fit into a through hole provided at the top of the locking post 18 of the case 1.

As mentioned above, since the reel main body 4 is made of sheet metal, the entire body including the necessary raised portions is formed thoroughly by press working, and the brush 8 is also thoroughly formed by insert molding. By assembling the holder 5 with , 9 and the stopper lever 7, and further connecting the terminals of the cord 10 to the brushes 8 and 9 in the same manner as in the conventional one, all subassembly work is completed, and from now on this is stored in the case 1. However, once the cover 3 is attached, the cord winding device is completed.

It should be noted that the above-mentioned embodiment is only one example, and it goes without saying that other designs may be used for each part as long as they have similar functions.

This idea is as described above, and since the reel body is made of sheet metal and the brush holder is made of synthetic resin, not only are they extremely easy to mold, but they can also be assembled using insert molding. The brush holder, on which the brush is integrally assembled, is inserted into the center of one side of the reel body by inserting a groove formed in the bottom of the brush holder into an upright piece raised from the main body, and attaching the winding mainspring to the other side of the reel body. Because it is a simple task to assemble the stopper lever in the center and near the outer periphery,
This eliminates the need for troublesome work such as attaching the brush to the same holder with screws, attaching the holder to the reel body with screws, and attaching the stopper lever to the case by caulking. The assembly work becomes extremely simple, and the overall assembly work can be significantly improved and made more efficient. In addition, since the reel body is made of sheet metal, it is heavy and has a large inertia, so there is no need to install a special brake. Since it is in contact with the inner surface, the space between the reel and the case can be reduced, the overall shape and dimensions can be small and compact, and it has excellent effects such as being able to be supplied at a low price. .

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of this invention, Fig. 2 is a plan view showing the inside with the same cover removed,
Figure 3 is a sectional view taken along the line - in Figure 2 above;
Fig. 4 is a bottom view partially cut away along the line - in Fig. 3, Fig. 5 is a plan view of only the reel body shown above, Fig. 6 is a sectional view taken along the line - in Fig. 5, and Fig. 7 is a cross-sectional view taken along the line - in Fig. 5. FIG. 8 is a plan view of the same holder without a brush attached thereto, and FIG. 8 is a sectional view taken along the line - in FIG. 7. 1...Case, 2...Reel, 3...Cover,
4... Reel body, 5... Brush holder, 6...
Mainspring, 7...stop lever, 10...cord.

Claims (1)

[Scope of utility model registration request] In a cord winding device in which a reel having a disc-shaped main body is installed in a case so as to be rotatable while being biased to one side, and a cover is attached, the main body of the reel is formed of a sheet metal, and the reel is made of a sheet metal. A synthetic resin brush holder with a brush integrally assembled in the center of one side of the main body by insert molding is provided in a removable manner by fitting a groove formed in the bottom of the synthetic resin brush holder into an upright piece raised from the main body. A winding spring is provided at the center of the other side, and a stopper lever formed at approximately the same height as the spring is removably pivoted near the outer periphery of the spring, and the surface of this stopper lever is brought into contact with the inner surface of the case. A cord winding device characterized by: