JPS6131013Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cord winding device for an electric appliance such as a vacuum cleaner.

Generally, the cord outlet of an electrical device equipped with a cord winding device has a structure that allows the plug of the power cord to be inserted during assembly, and prevents the plug from being drawn into the main body case after assembly. must be maintained.

Therefore, looking at conventional means, the first method is to insert a plug through the cord and then attach a metal fitting or a plastic plate to the cord outlet to narrow the through hole. There is a method to narrow the through-hole by sandwiching the parts in the case, and a third method is to form a skirt-like part made of an elastic member on the plug to be larger than the cord outlet and force it to pass through. As a fourth example, there is a method of forming a smaller concave portion in the abutting portion of the main case so as to form a cord outlet after the case is assembled. However, according to the first example, separate members such as metal fittings and plastic plates are required, and if these come off, the plug will be retracted, and according to the second example, the position of the cord extraction part is restricted. At the same time, the shapes of other parts are also restricted, which poses design and cost problems and lacks versatility.
According to the third example, the plug is an integrally molded plug, but since an elastic member is required, the material and shape of the plug are restricted.Furthermore, according to the fourth example, the installation position of the cord outlet is restricted, making it less versatile. There is a lack of

This idea was developed with these points in mind, and by simply changing the shape of the cord guide piece on the winding drum, it is possible to set the cord outlet with flexibility in terms of cost, design, and manufacturing. The object of the present invention is to obtain a cord winding device for electrical equipment that can be used in electrical equipment.

This idea is to provide a rotatable winding drum around which the power cord is wound, which is equipped with two cord guide pieces facing each other at a certain interval in the main body case, and also has a winding drum near the winding drum. In an electrical device having a cord outlet through which a power cord is inserted, the size of the cord outlet is set to a size that allows the plug of the power cord to be inserted;
A blocking portion having a substantially U-shaped cross section and protruding toward one side of the other cord guide is integrally formed on the entire outer periphery of the cord guide piece of the winding drum, and when the winding drum is attached to the main body case, the blocking portion is integrally formed. The position of the winding drum is set so that the size of the cord outlet is such that the side portion of the blocking portion is close to the cord outlet and partially covers the cord outlet, thereby preventing the plug from being drawn in. It is characterized by the fact that Therefore, by forming a blocking part on the cord guide piece, it is possible to prevent the plug from being pulled in without providing a separate member or using a specially shaped plug, and it is possible to prevent the plug from being pulled in. It is constructed so that the cord outlet can be set arbitrarily.

An embodiment of this invention will be explained based on FIGS. 1 and 2. This embodiment relates to a vacuum cleaner. Reference numeral 1 denotes a main body case in which an electric blower 2 is built-in, and a dust collection case 3 is detachably attached to the front side of the main body case 1 with a clamp 4. A drum rotation shaft 5 is rotatably provided on the bottom side of the main body case 1 and is rotatably supported perpendicularly to the main body case 1. The cord guide pieces 6 are arranged in series, and the power cord 7 is connected between the cord guide pieces 6.
A winding drum 8 is mounted on which the winding drum 8 is wound. Here, the upper end side of the drum rotating shaft 5 is supported by a contact mount 9 that electrically connects the electric blower 2 and the power cord 7, and the winding drum 8 is mounted on one side of the cord guide piece 6. A full force 10 is provided that biases in the direction of return rotation. Furthermore, a cord outlet 12 is located in a part of the main body case 1 near the winding drum 8 and has a size through which the plug 11 at one end of the power cord 7 can be inserted.
is formed. Therefore, the entire outer periphery of the cord guide piece 6 faces the cord outlet 12, and the opening size of the cord outlet 12 is adjusted to the size of the plug 1.
A blocking portion 13 is formed to have a substantially U-shaped cross section and is narrowed to such an extent that 1 cannot be inserted therethrough. Further, a brake device 16 includes a brake rubber 15 that comes into contact with and separates from an annular rib 14 formed on the cord guide piece 6.
is provided.

In such a configuration, when installing the winding drum 8, the plug 11 is first inserted from the cord outlet 12.
After pulling out the winding drum 8 to the outside, the winding drum 8 is set inside the main body case 1. At this time, since the cord outlet 12 has a size that allows the plug 11 to be inserted, the plug 11 can be pulled out without any trouble. Exit 12
The opening size of the plug 11 is narrowed to prevent the plug 11 from being drawn into the main case 1. in this way,
The plug 11 is blocked by the blocking part 13 of the cord guide piece 6.
It is possible to prevent the cord from being drawn in, eliminates the need for a special separate member that narrows the cord outlet as in the past, and is inexpensive. There is no need to worry about the plug becoming damaged, and it also allows for relatively flexible design settings, and there is no need for the plug 11 itself to be made of an elastic member or to have a special shape. 11
The material and shape can be freely selected, and after all, it is easy to assemble and has good manufacturability.

Next, FIG. 3 shows a modification in which the annular rib 14 is omitted and the brake rubber 15 of the brake device 16 is attached to the blocking part 1 of the cord guide piece 6.
3. This makes it possible to effectively utilize the recess of the blocking part 13 and downsize the entire structure.At the same time, the brake rubber 15 is placed inside the blocking part 13.
Since it is close to the outer wall of the main body case 1, the parts of the brake device 16 can be made smaller and cheaper. Note that the fourth example shows another modification example.
As shown in the figure, a rotating contact 17 connected to the starting end of the power cord 7 is provided in the blocking portion 13 of the cord guide piece 6, and as it comes into contact with the rotating contact 17, an electrical connection is made with the electric blower 2 side. By providing the contact point 18 in a part of the main body case 1, the recess of the blocking portion 13 may be effectively utilized.

Although this embodiment has been described with respect to a vacuum cleaner, it can be similarly applied to other electrical appliances equipped with a cord winding device.

As mentioned above, this invention narrows the cord outlet by forming a blocking part on the cord guide piece of the winding drum, so there is no need to use a separate member or a specially shaped plug. This has advantages such as being able to prevent cords from being drawn in, being easy to assemble and having good manufacturability, and being able to set the cord outlet with flexibility in terms of design.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing one embodiment of this invention, Fig. 2 is a longitudinal sectional side view of the main part, Fig. 3 is a longitudinal sectional side view showing a modification, and Fig. 4 is a side view of another embodiment. FIG. 7 is a vertical side view showing a modification. 1... Main body case, 6... Cord guide piece, 7
...Power cord, 8... Winding drum, 11...
Plug, 12...cord outlet, 13...blocking part.

Claims (1)

[Scope of utility model registration request] A winding drum, on which the power cord is wound, is rotatably provided in the main body case and includes two cord guide pieces facing each other at a certain interval, and the power cord is inserted into the vicinity of the winding drum. In an electrical device in which a cord outlet is formed, the size of the cord outlet is set to a size that allows the plug of the power cord to be inserted, and the entire outer periphery of the cord guide piece of the winding drum has a rough cross section. A blocking part having a U-shape and protruding toward one side of the other cord guide is integrally formed, and when the winding drum is attached to the main body case, the side part of the blocking part approaches the cord outlet and A cord winding device for an electrical appliance, characterized in that the position of the winding drum is set so that the cord outlet has a size that prevents the plug from being pulled in by partially covering the cord outlet.