JPH06245885A - Cable reel - Google Patents

Abstract

PURPOSE:To provide a cable reel which can incorporate a leaf spring securely and moreover has the excellent incorporation efficiency with a leaf spring. CONSTITUTION:A plastic case forming body 21 storing and holding a leaf spring is inserted in to a supporting axis 17 at a center end holding part 24. Then, a cutting/mounting apparatus 29 is pushed up leftwards in the drawing. Thereby the case forming body 21 is pushed to the left in the drawing by a pressing member 27, and the center end-holding part 24 is pushed to the left in the drawing by a cutting blade 28. And the case forming body 21 is mounted in a drums 16 with the center end-holding part 24 cut by the cutting blade 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord reel, and more particularly, to a cord reel incorporated in an electric vacuum cleaner, an electric rice cooker or the like for winding and storing the power cords thereof. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as a cord reel of this type, a drum for winding and storing a power cord, and a drum provided at the center of the drum and fixed at a predetermined position to rotatably support the drum. It is known that a support shaft and a coiled leaf spring whose center end is held by the support shaft and biases the drum in the winding direction of the power cord are known.

In such a cord reel, generally, as shown in FIGS. 10 and 11, a coiled leaf spring 101 is housed in a spring holder 102 when shipped from the manufacturer of the leaf spring 101.・ Retained.

That is, the spring holder 102 is usually made of plastic, and has a bottom wall portion 103 having a substantially + shape in plan view, a ring-shaped peripheral edge portion 104 connected to the peripheral edge of the bottom wall portion 103, and a bottom. It is provided with a ring-shaped side wall portion 105 that is erected at a position near the peripheral edge of the wall portion 103. Further, the spring holder 102 has a center end holding portion 103 a for holding the center end 101 a of the stored leaf spring 101, and a bottom portion 103.
It is provided in the center of. Further, the spring holder 102 is provided with an outer peripheral end holding portion 103b for holding the outer peripheral end 101b of the stored leaf spring 101 in a part of the side wall portion 105.

The leaf spring 10 is attached to such a spring holder 102.
After 1 is stored and held, the spring holder 102 is transported from the manufacturer of the leaf spring 101 to the cord reel assembly factory. Then, in the assembly factory, the leaf spring 101 in the spring holder 102 is mechanically or manually transferred to a spring storage portion formed on the side surface of the drum for the cord reel or the like, and incorporated into the drum. Then
A lid is applied to the spring housing portion housing the leaf spring 101, and the lid is fixed to the drum. The spring holder 102 from which the leaf spring 101 is removed is the leaf spring 1 from the cord reel assembly factory.
It is sent back to the manufacturer of No. 01 for reuse.

[0006]

Thus, when the leaf spring 101 in the spring holder 102 is transferred to the spring accommodating portion formed on the drum, the center of the leaf spring 101 accommodated in the spring holder 102 is transferred. It is necessary to fit and hold the end 101a on the support shaft of the cord reel, and to fit and hold the outer peripheral end 101b of the leaf spring 101 at a predetermined position of the spring accommodating portion formed on the drum.

However, the leaf spring 101 is wound several times to a dozen or more times in the spring holder 102 and has a strong elasticity. For this reason, if both ends 101a and 101b are not simultaneously fitted into the two predetermined locations of the spring accommodating portion, the leaf spring 101 will spring. Then, the drum cannot be fitted into a predetermined portion of the spring storage portion, or pops out of the spring storage portion. As described above, in the above-described conventional cord reel, not only is there a risk in assembling the leaf spring 101, but also if the assembling fails, the leaf spring 101 has to be incorporated again, resulting in poor assembling efficiency. was there.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cord reel in which a leaf spring can be safely and surely incorporated into a drum of the cord reel and which is excellent in incorporation efficiency. To provide.

[0009]

According to the present invention, the drum for winding up and storing the power cord and the drum provided at the center of the drum in a penetrating manner and fixed at a predetermined position, A support shaft that rotatably supports the drum, a coil-shaped leaf spring whose center end is held by the support shaft and biases the drum in the winding direction of the power cord, and a drum that stores and holds the leaf spring. And a spring case that is loosely fitted to the support shaft and fixed to the drum so as to be rotatable around the support shaft, and the spring case is provided on the peripheral edge thereof and holds an outer peripheral end of the leaf spring. The support shaft comprises a case forming body that has a holding portion and a center end holding portion that is provided at the center of the holding portion and holds the center end of the leaf spring. To Cord reel comprising by holding the center end of the leaf spring to the support shaft while the spring case by removing the central end holding portion when the fitting is provided.

That is, in the cord reel according to the present invention, instead of the conventional spring holder, a case forming body is used as a member at a previous stage to be a spring case, and the leaf spring is previously stored and held in the case forming body. When this is loosely fitted to the support shaft of the cord reel, the center end holding portion of the leaf spring provided on the case forming body is removed to form a spring case, and the center end of the leaf spring is attached to the support shaft. It is characterized in that it is held and a leaf spring is incorporated.

Here, unlike the conventional spring holder that has been reused, the spring case is incorporated in the cord reel as one component of the cord reel. As a result,
The required spring cover is no longer required.

The case forming body is provided with an outer peripheral end holding portion at the peripheral edge and a central end holding portion at the center. The outer peripheral edge holding portion is a portion for holding the outer peripheral edge of the coil-shaped leaf spring housed in the case forming body, and the center edge holding portion is a portion for holding the central edge of the leaf spring. The center end holding portion may be integrally provided in the central portion of the case forming body, or may be separately provided in the central portion of the case forming body as a separate member.

A leaf spring is stored and held in advance in such a case forming body, and this is loosely fitted to the supporting shaft of the cord reel. At this time, if the central end holding portion is removed from the case forming body by means such as cutting or pulling out, a predetermined spring case is obtained. At this time, the center end of the leaf spring held in the center of the case forming body is held by the supporting shaft of the cord reel.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on an embodiment shown in the drawings. The present invention is not limited to this.

In FIG. 1, an electric vacuum cleaner 1 includes a cleaner body 2 having a drive mechanism and the like, and a suction tool detachably connected to the cleaner body 2 via a connecting hose 3 and a connecting pipe 4. 5 and. As shown in FIG. 2, the cleaner main body 2 includes a plastic main body case 6 and various components such as a cord reel 7 provided in the main body case 6.

A suction port body 8 is provided at the front of the cleaner body 2. The suction port body 8 has a circular suction port 8a,
It has an opening 8b communicating with the suction port 8a.
Reference numeral 9 denotes a shutter, which closes the suction port 8a of the suction port body 8 so as to be opened.

Behind the suction port 8a in the main body case 6,
A dust collection chamber 10 is provided so as to communicate with the suction port 8a. A dust collecting bag 11 is arranged in the dust collecting chamber 10. An electric blower 12 for suction is provided on the downstream (rear) side of the dust collection chamber 10. The electric blower 12 is stored in the blower storage chamber 13.

The cord reel 7 according to the present invention includes a cord reel storage chamber 14 provided on the right side of the blower storage chamber 13.
It is located in. That is, the cord reel 7 is a drum 16 for winding and storing the power cord 18.
And a support shaft 17 pierced at the center of the drum 16 and rotatably supporting the drum 16. The support shaft 17 includes a central portion 15 a of a partition wall 15 that separates the blower storage chamber 13 and the cord reel storage chamber 14, and a protruding portion 14 provided on the right side wall of the cord reel storage chamber 14.
It is fixed at a and.

The cord reel 7 is further provided with a coil-shaped leaf spring 19 whose center end is held by a support shaft 17 and biases the drum 16 in the winding direction of the power cord, and the leaf spring 19.
And a spring case 20 that is fixed to the drum 16 by being loosely fitted to the support shaft 17 so as to be rotatable around the support shaft 17 together with the drum 16.

As shown in FIGS. 3 and 4, the spring case 20 is made of a case forming body 21 as a member at a previous stage of becoming the spring case 20. That is, the case forming body 21 is made of plastic, has a circular planar shape, and has a bottom wall portion 22 having four fan-shaped openings 22a.
And a ring-shaped side wall portion 23 that is erected from the bottom wall portion 22 in a continuous manner.

The case forming body 21 includes a center end holding portion 24.
Is provided in the center of the bottom wall portion 22, and two outer peripheral edge holding portions 25 are provided in the side wall portion 23. Center end holding part 2
4 has a ring shape in plan view, and has four slits 24a.
Are provided at equal intervals. The inner diameter of the center end holding portion 24 is slightly larger than the outer diameter of the support shaft 17 of the cord reel 7. Further, the four slits 24a are used for fitting and holding the central end 19a of the leaf spring 19 in one of them. The bottom wall portion 22 outside the base of the center end holding portion 24 is provided between three arc-shaped openings 22c that separate the center end holding portion 24 from the other bottom wall portions 22 and between these arc-shaped openings 22c. And center end holding part 2
4 and three scheduled cut portions 22b are provided. Reference numeral 26 is a mounting portion provided with a screw hole on the side wall portion 23 so as to project outward.

As shown in FIGS. 5 and 6, the leaf spring 19 is housed in the case forming body 21, and the central end 19 of the leaf spring 19 is accommodated.
a is fitted and held in one slit 24a in the center end holding portion 24 of the case forming body 21, and the outer peripheral end 19b of the leaf spring 19 is fitted and held in one outer peripheral end holding portion 25 of the case forming body 21. Then, the leaf spring 19 is housed / held in the case forming body 21. Such fitting work is usually performed by the manufacturer of the leaf spring 19 or the like as in the conventional case.

In order to obtain the predetermined spring case 20 by attaching the case forming body 21 in which the leaf spring 19 is housed / held to the drum 16 in this way, as shown in FIGS. 7 and 8, the case forming body 21 is used. Holding member 27 for holding
And a cutting / mounting device 29 including a cutting blade 28 fitted in the pressing member 27 so as to be horizontally movable. The cutting blade 28 of the cutting / mounting device 29 is horizontally moved by the thrust shaft 30 to which it is attached. The pressing member 27 is a support portion 3 that is integrated with the thrust shaft 30.
It is moved horizontally by two actuating shafts 32 loosely fitted in 1. The pressing member 2 is attached to these operating shafts 32.
A coil spring 33 is mounted between the coil 7 and the support 31.

As shown in FIG. 7, first, the case forming body 21 in which the leaf spring 19 is housed and held is attached to the center end holding portion 2.
At 4, the support shaft 17 is fitted. Then, the cutting / mounting device 29 is pressed to the left in the drawing. Then, the case forming body 21 is pushed leftward in the drawing by the pressing member 27. At the same time, the center end holding portion 24 of the case forming body 21 is pushed to the left in the drawing by the cutting blade 28. Then, as shown in FIG. 8, the case forming body 21 is mounted on the drum 16 in a state in which the three planned cutting portions 22b connected to the center end holding portion 24 are cut by the cutting blades 28.

At this time, the central end 19a of the leaf spring 19 is
From the center end holding portion 24 of the case forming body 21 to the support shaft 17
It has been transferred to the cutout portion 17a provided in FIG.
reference). The cut center end holding portion 24 is removed from the support shaft 17. Then, as shown in FIG.
Is attached to the side wall of the drum 16 with screws 34. In this way, the cord reel 7 with the predetermined spring case 20 attached can be obtained.

In this cord reel 7, the leaf spring 1
Since the case forming body 21 accommodating and holding 9 is attached to the drum 16 to obtain the predetermined spring case 20, the leaf spring 19 can be safely and surely incorporated.
Moreover, the leaf spring 19 is excellent in the assembling efficiency. Further, the lid for the spring storage portion, which has been conventionally required, is no longer necessary, which is advantageous in terms of product cost.

[0027]

Since the cord reel according to the present invention is constructed as described above, the leaf spring can be safely and surely incorporated, and the leaf spring can be assembled efficiently.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric vacuum cleaner in which a cord reel according to an embodiment of the present invention is incorporated.

FIG. 2 is a configuration explanatory view of the inside of a cleaner body of the electric vacuum cleaner as viewed from above.

FIG. 3 is a plan view of a case forming body as a member at a previous stage that becomes a spring case attached to the cord reel.

FIG. 4 is a vertical sectional view of a central portion of the case forming body.

FIG. 5 is a plan view of a case forming body that accommodates and holds a leaf spring.

FIG. 6 is a vertical cross-sectional view of a central portion of a case forming body that accommodates and holds a leaf spring.

FIG. 7 is a vertical cross-sectional view of a central portion showing a state where the case forming body in which the leaf springs are housed / held is being attached to the drum.

FIG. 8 is a vertical cross-sectional view of a central portion showing a state after the case forming body in which the leaf springs are housed / held is attached to the drum.

FIG. 9 is a plan view of a cord reel in which a leaf spring is attached to a drum.

FIG. 10 is a plan view of a spring holder in which a leaf spring incorporated in a conventional cord reel is stored and held.

FIG. 11 is a vertical sectional view of a central portion of the spring holder.

[Explanation of symbols]

 7 cord reel 16 drum 17 support shaft 18 power cord 19 leaf spring 19a central end 19b outer peripheral end 20 spring case 21 case forming body 24 central end holding portion 25 outer peripheral end holding portion

Claims (1)

[Claims] 1. A drum for winding and storing a power cord, a support shaft which is provided at the center of the drum in a penetrating manner and fixed at a predetermined position, and rotatably supports the drum, and this support. A coil-shaped leaf spring whose central end is held by the shaft and urges the drum in the winding direction of the power cord, and the leaf spring is housed and held and is rotatable with the drum around the support shaft. The spring case is loosely fitted to the support shaft and fixed to the drum. The spring case has an outer peripheral end holding portion which is provided at a peripheral edge thereof and holds an outer peripheral end of the leaf spring, and a spring case which is provided at the center thereof. A case forming body having a center end holding portion that holds the center end, and the center end holding portion is removed when the case forming body in which the leaf spring is housed and held in advance is loosely fitted to the support shaft. Then spring Cord reel comprising by holding the center end of the leaf spring to the support shaft while the.