JPS6141730Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a cord winding device that automatically winds up a cord using a spiral spring as a power source, and will be explained below with reference to illustrated embodiments. 1
is a winding frame composed of an upper winding frame 2 and a lower winding frame 3, with a bearing 4 in the center and a braking wall 5 at the top.
Further, a spring chamber 6 is formed in the lower part.

Reference numeral 7 denotes a shaft rotatably supporting the winding frame 1, the lower part of which passes through the spring chamber 6, and a cut groove 8 is provided in this penetrating portion.

9 is housed in the spring chamber 6, and its inner end is connected to the shaft 7.
a spiral spiral spring supported by the kerf 8;
Reference numeral 10 denotes a spring holder which is detachably supported on the winding frame 1, and has a through hole 11 in the center through which the lower end of the shaft 7 passes, and a spring holder to prevent the spiral spring 9 from jumping out of the spring chamber 6. Crossing room 6. Further, a roundness 12 is provided on the spring-side end surface of the spring pusher to prevent the end surface of the spring 9 from catching on the corner portion when the spring 9 is in action. 13
is a power cord wound around the winding frame 1, and one end of the power cord is supported by the winding frame 1.

Reference numeral 14 denotes a fixed frame that supports the upper end of the shaft 7 at the center of the lower surface, and has a protrusion 15 on the upper surface and an opening 16 for supporting the brake near the brake wall 5 of the winding frame 1.
It further has a locking portion 17 on which a horizontal L-shaped brake stopper acts.

18 is a brake piece, one end of which is connected to the protrusion 15.
The side end is located within the lateral groove of the locking portion 17. A rubber brake 19 is supported on this brake piece, which is located in the brake insertion opening and presses the brake wall 5 from inside to stop the rotation of the winding frame 1.

20 is a brake 19 provided on the brake piece 18
is a tension spring for constantly pressing the brake wall 5. Next, the operation of the above-described configuration will be described. When the cord 13 is pulled out against the spiral spring 9, the brake wall 5 of the reel 1 pulls the brake piece 18, and the reel 1 rotates against the spring 20.

When the cord 13 is stopped from being pulled out, the brake 19
The tension spring 20 presses the brake wall 5 to stop the rotation of the reel 1.

When winding the cord 13 around the winding frame 1, when the brake piece 18 is moved against the tension spring 20, the brake 19 is separated from the braking wall 5, and the spring spring 9 rotates the winding frame 1 to wind the cord 13. Turn. At this time, the spiral spring 9 is wound in a spiral shape.
The diameter increases and decreases in the spring chamber 6, but since the corners of the spring holder 11 are rounded, the end surface of the spring catches on the corner of the spring holder and does not interfere with its movement. It is.

The fixing frame 14 of the brake piece 18 is attached by inserting the brake piece 18 into the protrusion 15 so that the brake 19 is inserted into the opening 16 for inserting the brake, and using a tension spring whose one end is attached to the brake piece 18. 20 is attached to the fixed frame 14, the brake piece 18 is naturally engaged with the locking portion 17 due to the action of the spring 20, thereby preventing the winding frame 1 from floating up.

As explained above, according to the cord winding device of this invention, the brake piece equipped with a brake can be attached to the outer surface of the fixed frame, and even in that case, the brake piece can easily be lifted from the outer surface of the fixed frame. This can be reliably prevented with a suitable structure.

[Brief explanation of drawings]

The figures show one embodiment of this invention, in which Fig. 1 is a longitudinal sectional view, Fig. 2 is a bottom view, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is an enlarged plan view. , FIG. 5 is a sectional view taken along line B-B in FIG. 4. In the figure, 1 is a winding frame, 14 is a fixed frame, 15 is a protrusion, 1
6 is an opening for inserting a brake, 17 is a convex wall, 18 is a brake piece, and 19 is a brake.

Claims (1)

[Scope of utility model registration request] a winding frame that is rotatably supported on a shaft attached to a fixed frame and stores a power cord; a spiral spring provided to the winding frame to apply rotational force in a direction to constantly wind up the power cord; A braking wall provided on a wall surface of the winding frame facing the frame, an opening formed in the fixed frame, and a brake pivotally attached to the outer surface of the fixed frame and disposed from the opening onto the wall surface of the winding frame. a brake piece that is always pivoted in a direction to press the brake against the braking wall; and a horizontal L-shaped locking portion provided on the outer surface of the fixed frame so that the brake comes into contact with the braking wall. a locking part that engages one side of the brake piece with a lateral groove to prevent the brake piece from lifting off from the outer surface of the fixed frame when the brake piece starts to move.