JPH028943Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a cord winding device for winding a cord around its winding drum.

(b) Prior Art As shown in FIG. 6, a cord reel constituting a conventional cord winding device has a pair of disc-shaped winding frames 8, 8 integrally formed on the peripheral edge of a cylindrical winding drum 7. A gap is formed between the pair of winding frames 8, 8 for winding the cord. An opening A is formed in the side wall of the winding drum 7, and the cord is guided into the winding drum 7 from the outer circumferential side of the winding drum 7 through this opening A, and the end of the cord is connected to the terminal plate 1 in the winding drum 7. was connected to.
However, with this configuration, the gap between the winding frames 8, 8 on which the cord is wound is narrow, and the winding frame 8 gets in the way, making it difficult to insert the cord into the opening A through this gap, making assembly work difficult. It was a hassle.

In addition, as seen in Japanese Patent Application Laid-Open No. 144086/1986, the winding drum and the winding frame are constructed as separate parts,
If these are assembled with screws, the cord can be connected to the terminals with the winding frame removed, and then the winding frame can be attached. This makes the connection work easier, but on the other hand, it requires fewer parts. In addition, there arise problems such as a step of screwing the winding drum and the winding frame together, which increases the number of steps.

(c) Purpose of the invention The invention makes it easier to insert the cord into the opening without increasing the number of parts or steps.
The purpose is to facilitate the assembly work of the cord winding device.

(d) Structure of the invention The structure of the invention consists of a cylindrical winding drum and a pair of disk-shaped winding frames integrally formed on the peripheral edge of the winding drum. A cord reel in which a cord is wound in a gap between winding frames is rotatably housed in a case body through a shaft portion, and a cutout opening is provided from a side wall of the winding drum to the winding frame. The cord is inserted through the notch opening and connected to the terminal plate in the winding drum.

(E) Example of the invention 1 is a case body, which includes a disk-shaped front plate 3 with a shaft 2 erected in the center, and a disk-shaped rear plate 4.
, an annular side plate 5 connecting the two plates, and a cord reel 6 rotatably disposed on the shaft portion 2 . The cord reel 6 includes a cylindrical winding drum 7 that forms a wiring space S, a pair of disc-shaped winding frames 8, 8 that are integrally formed on the outer periphery of the winding drum 7 with a gap therebetween. It has a spiral spring 9 etc. that biases rotation in the direction. The winding drum 7 has an open upper surface, and has a stepped portion 10 formed at the edge of the opening, and also forms an annular storage jetty 11 that is connected to the winding drum 7 and stores the spiral spring 9 therein. The winding drum 7 is provided with terminal plates 13, 13 connected to the ring contact plates 12, 12, and the shaft portion 2
A holding cylindrical portion 14 is formed to be held in the holding cylinder. The ring contact plates 12, 12 are slidably connected to elastic contact plates 16, 16 provided on the back plate 4 and electrically connected to an electric device (not shown). A partition plate 17 having a hole in the center is disposed on the stepped portion 10 so that the spiral spring 9 can be placed thereon, one end of the spiral spring 9 is locked to the storage jetty 11, and the other end is is locked to the shaft portion 2. A cord 20 having a plug 18 at the tip can be pulled out from a drawer portion 21 formed in the case body 1, and is wound in a line within the gap on the outer periphery of the winding drum 7 (see Fig. 5). reference). Reference numeral 22 denotes a notch opening that is continuously cut out from the side wall of the winding drum 7 and a projecting portion 25 (to be described later) to the winding frame 8, and at the edge thereof, there is a notch that extends outward continuously from the storage jetty 11. A projecting portion 25 is integrally formed. In other words, the cutout opening 22 is formed in the vertical direction of the side wall of the winding drum 7 and in the horizontal direction of the overhang 25.

The end of the cord 20 is guided from the gap between the winding frames 8 and 8 through the cutout opening 22 into the wiring space S of the winding drum 7, connected to the terminal plates 13, and then connected to the partition plate 1.
7 is arranged on the step part 10, and the mainspring 9 is connected to the partition plate 17.
and the annular jetty 11, and the cord reel 6 is rotated in one direction. The gap is narrow enough to allow the cord 20 to be wound in a line, but according to the present invention, the notch opening 22 is wide and extends over the surface of the winding frame 8, so that the outer periphery of the winding frames 8, 8 is narrow. The tip of the cord 20 inserted into the gap advances along the surface of the winding frame 8 and is easily inserted into the notch opening 22 which extends over the surface of the winding frame 8 and has a wide area.

(f) Effects of the invention Since the invention is constructed as described above,
When connecting the end of the cord from the gap between the winding frames to the terminal plate inside the winding drum, even if the gap between the winding frames is extremely narrow, the end of the cord must be connected from the side wall and overhang of the winding drum. It can be inserted extremely easily into a notch opening that spans the surface of the winding frame and has a wide area.
Assembly work can be facilitated. Furthermore, since the cord reel is made by integrally forming the winding drum and the winding frame, there is no need for an increase in the number of parts or steps. Furthermore, after the cord is inserted through the notch opening and connected to the terminal board, the opening area is substantially reduced by the partition plate, thereby preventing wobbling of the cord after assembly and poor connection with the terminal board.

[Brief explanation of drawings]

Fig. 1 is a front view of the case body, Fig. 2 is a perspective view of the cord reel, Fig. 3 is the same perspective view when the mainspring spring is removed, Fig. 4 is the same perspective view when the mainspring spring and the cord are removed, FIG. 5 is a schematic sectional view of FIG. 1, and FIG. 6 is a perspective view of a conventional cord reel. 6... Cord reel, 7... Winding barrel, 8... Winding frame, 13... Terminal board, 20... Cord, 22...
Notch opening.

Claims (1)

[Scope of utility model registration request] A cylindrical winding drum forming a wiring space, and an annular projection having a stepped portion formed on the upper opening side of the winding drum and an outwardly protruding portion, and integrally formed on the peripheral edge of the winding drum. It consists of a pair of disc-shaped winding frames, a partition plate disposed on the stepped portion, and a spiral spring disposed between the annular jetty and the partition plate, and between the pair of winding frames on the outer periphery of the winding drum. A cord reel, in which a cord is wound in a gap, is rotatably stored in a case body via a shaft, and a notch opening is provided from a side wall and an overhang of the winding drum to the winding frame. A cord winding device characterized in that the cord is inserted into the cutout opening and connected to a terminal plate in the wiring space, and the partition plate is disposed in a stepped portion.