JPS6111175Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a cord winding device, and is a cord winding device that can easily and reliably fix the end of the cord introduced into the winding drum of a cord reel. The purpose of this project is to provide a device for collecting

The details will be explained below with reference to the drawings showing the embodiments.

In the figure, reference numeral 5 denotes a cord reel of a cord winding device 4 which is housed in the main body (not shown) of the device, and is rotatably supported on a shaft 6 fixed to the main body.

7 is a cylindrical winding drum constituting the cord reel 5; 8 is a first flange portion projecting from the lower opening of the winding drum 7 in the radial direction of its axis; 9 is a first flange portion of the winding drum 7; A disk-shaped second flange portion 10 is integrally provided so as to close the upper opening, and 10 is a cylindrical portion that projects downward from the lower surface of the second flange portion 9; 6 and is rotatably fitted onto the top. Reference numeral 11 denotes six ribs formed between the inner circumferential surface of the winding drum 7 and the outer circumferential surface of the cylindrical portion 10; 9, the cylindrical portion 10, and the ribs 11 are integrally formed of a synthetic resin material.

Reference numeral 12 designates three through holes bored in the winding drum 7 at intervals in the circumferential direction, and 13 designates a disk-shaped supporting plate made of synthetic resin, which is opened from the lower opening of the winding drum 7. It can be inserted into the winding drum 7. 14 are 2 concentrically fixed to the lower surface of the support plate 13 at intervals.
The striped slip rings 15 are three engaging pawls that project from the outer periphery of the support plate 13 at intervals in the circumferential direction, and when the support plate 13 is inserted into the winding drum 7, The claw portion 15a can engage with the through hole 12.

16 is a long hole extending in the axial direction from the lower opening of the winding drum 7; 17 is a projection projecting laterally from the outer circumference of the support plate 13;
When the support plate 13 is inserted therein, the protrusions 17 engage with the elongated holes 16 to position the support plate 13 in the circumferential direction.

18 is a hole formed in the winding drum 7, 19 is a notch formed in the rib 11, and the three ribs 1
1, respectively. A cord 20 is wound and stored on the cord reel 5, the end of which is introduced into the winding drum 7 through the hole 18 and electrically connected to the slip ring 14. Reference numeral 21 denotes a bushing integrally formed near the end of the cord 20, and a groove 21a into which the rib 11 at the peripheral edge of the notch 19 can be fitted is formed in the most expanded diameter portion of the bushing. 21b. 22 is a protrusion integrally formed to protrude from one side of the support plate 13;
When the support plate 13 is assembled to the cord reel 5, the bush 21 is prevented from coming off from the notch 19.

In the structure as described above, the cord 20 is now guided into the winding drum 7 through the hole 18, and the tip of the cord 20 is connected to the slip ring 14 before the support plate 13 is assembled into the winding drum 7.
is soldered to. After that, the rib 1 is inserted into the groove 21a.
Cut the bush 21 into the notch 19 so that the part 1 fits into the notch 19.
Insert into. Next, the support plate 13 is inserted into the winding drum 7 so that the projection 17 fits into the elongated hole 16 until it comes into contact with the rib 11. Then, the three engaging claws 1
The claws 15a of 5 engage with the through holes 12 to hold the support plate 13 in the winding drum 7, and at the same time,
The tip of the protrusion 22 is located near the bush 21 to prevent the bush 21 from coming off the notch 19,
As a result, the end of the cord 20 is connected to the cord reel 5.
and the support plate 13, and the assembly work is completed.

Since the bush 21 has a substantially rectangular side profile, the bush 21 does not rotate in the direction about the axis of the cord 20 when the bush 21 is inserted into the notch 19. Therefore, the cord 20 may be twisted due to long-term use of the cord winding device, but the twisting of the cord 20 will not cause excessive force to be applied to the connecting portion between the cord 20 and the slip ring 14. There is no.

As described in detail above, this invention is particularly advantageous in that the cord is provided with a bush that is fitted into the peripheral edge of the notch in the rib formed in the winding drum of the cord reel.
The support plate that supported the slip ring is provided with a protrusion that faces the bushing fitted into the notch and holds the bushing in the notch. By inserting the supporting plate into the winding drum, the bushing can be securely held in the notch by its protrusion, and an excessive tensile force can be applied to the cord at the end of cord withdrawal. Even if the cord is bent, the tensile force is received by the bush and the rib, thereby reliably preventing the cord end from breaking.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the cord winding device of this invention, Fig. 2 is an exploded view thereof, and Fig. 3 is a sectional view of the cord winding device of this invention.
- It is a 3-line sectional view. In the figure, 5 is a cord reel, 7 is a winding drum, and 8 is a cord reel.
is the first flange part, 9 is the second flange part, 1
3 is a support plate, 11 is a rib, 14 is a slip ring, 19 is a notch, 21 is a bush, and 22 is a protrusion.

Claims (1)

[Claims for Utility Model Registration] A cylindrical winding drum, a first flange portion projecting in the radial direction of its axis from an opening on one side of the winding drum, and a first flange portion formed on the other side of the winding drum. the second
and a rib that projects from the first flange side toward the one side opening in the winding drum, and on the rib inside the winding drum, A support plate for supporting the slip ring was inserted and arranged, and the end of the cord wound and stored on the winding drum was introduced into the winding drum, inserted into the notch of the rib, and connected to the slip ring. In the cord winding device, the cord is provided with a bush that is fitted into the peripheral edge of the notch of the rib, and the support plate is provided with a bush that is inserted into the notch in opposition to the bush that is fitted into the notch. A cord winding device characterized by having a protrusion for holding the cord.