JPS60188277A - Power-cord taking-up apparatus - Google Patents

Abstract

PURPOSE:To facilitate the replacement of a power cord by constituting a part of the cylindrical part of a cord reel in demountable ways and allowing the top edge of the power cord to be connected to a power source side, in the captioned apparatus built into the electrical equipment such as electric vacuum cleaner, etc. CONSTITUTION:In a cord reel 10 of the captioned taking-up apparatus, a part of the cylindrical part 13 of a reel case 11 which forms the front half is formed into a demountable cord supporter 41. Said supporter 41 is equipped with a circular surface forming a part of the cylindrical part 13 and a nearly fan- shaped wall surface 46 which is formed by separating a part of the wall surface of the reel case 11 up to the vicinity of a reel bearing 42. The top edge 9' of a power cord 9 is introduced into the cylindrical part 13 through an opened part 45 formed onto a part of the circular surface of the supporter 41, and allowed to pass in meandering through a plurality of bosses 47 installed in projection onto the nearly fan-shaped wall surface 46, and a lead wire 26 at the top edge of the cord 9' is connected to a contact piece 21 which contacts with the slip ring 23 of a reel supporting board 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to the structure of a winding device for a power coat that is installed in the main body of an electrical appliance such as a vacuum cleaner.

[Background of the invention]

The structure of a conventional power cord winding device provided in a vacuum cleaner will be explained with reference to FIGS. 1 to 4. 1st
The figure shows a winding device 2 that is placed behind the main body of a vacuum cleaner 1.
FIG. In the figure, an electric suction device 4 is provided behind the filter case 3 and is supported by a vibration isolating rubber 5. Behind this electric suction device 4, a winding device 2 is supported by a vibration isolating rubber 6. It is spelled out. still,
The vacuum cleaner 1 is provided with casters 7 at the front and a moving axle 8 at the rear on the lower side of the main body.

A cord reel 1 for winding a power cord 9 in a winding device 2
0 is formed by a reel case 11 forming the front half and a spring case 12 forming the rear half, as shown in FIG. Among these, the reel case 11 includes a cylindrical portion 13 for winding the power cord 9, a flange portion 14 supporting the power cord 9 at the front, and a wall surface I5 extending in the radial direction inside the cylindrical portion 13. Similarly, the mainspring case 12 also includes a cylindrical portion 16, a flanche portion 17 supporting the power cord 9 at the rear, and an inner wall surface 18 of the cylindrical portion 16. These reel case 11 and mainspring case 12
form the cord reel 10 as a whole, connected at the cylindrical part 13.16. This cord reel 1o is rotatably supported around a reel shaft 19 passing through the two wall surfaces 15 and 18. Mainspring case 12
A mainspring 20 is provided inside the cord reel IO and urges the entire cord reel IO in the rotational direction with respect to the reel shaft 19.

A contact piece 21 for supplying power to the vacuum cleaner body is specially provided on the front wall surface 15 of the two wall surfaces 15 and 18. This contact hole 121 has two sides, positive and negative, and is a double annular slip ring 23.2 provided on the reel support base 22 to which the reel shaft 19 is fixed.
It is in contact with 3. This contact is maintained even when the cord reel 10 rotates, so that power can be supplied to the vacuum cleaner body.

FIG. 3 shows an internal front view of the cord reel 10 shown in FIG. 2. The inside of the cord reel 1o is closed by two walls 15 and 18, but a part 24 of the circumferential surface of the cylindrical part 13 is opened and one end 9' of the power cord 9 is inserted into the inside of the cord reel 1o. It snakes between the ribs 25 and is supported.

The lead wire 26 exposed from one end 9' of this power supply cord 9 is connected to a terminal plate 27 attached to the wall surface 15 inside the cord reel IO by a lead wire attachment/detachment screw 28. Note that the terminal plate 27 is attached to the wall surface 15 using rivets 1-29.

The terminal plate has two terminals, positive and negative, which are connected to the positive or negative contact piece 21, respectively.

This connection state is shown in FIG.

The contact piece 21 protruding from the front surface of the wall surface 15
The same rivets 1-29 are used to hold the terminal plate 27 on the rear side of the terminal plate.

[Problems with background technology]

Traditionally, the internal parts of power cord winding devices were based on parts designed for domestic use in order to share as much as possible.
Furthermore, in order to comply with foreign standards, the materials of the parts were changed and the structure was changed to allow the power cord to be replaced. These foreign standards, especially European standards such as Vl)E (West Germany), BS (United Kingdom), and 5EV (Switzerland), stipulate that power cord winding devices must satisfy the following requirements.

(1) The power cord can be easily replaced without touching the internal lead wire of an electric appliance such as a vacuum cleaner.

(2) Holding charged parts such as contact pieces and slip rings,
Phenol resin, polycarbonate 1 should be replaced by non-flammable or flame-retardant materials such as resins that are strong against heat and have excellent scratching resistance.

In order to meet these requirements, in the conventional example explained in FIGS. It was designed to be removed and disassembled from the aircraft body. Therefore, there was a problem with serviceability when replacing the power cord.

[2] In response to the requirement (2) above, the reel case lO
The entire structure was constructed using expensive non-combustible or flame-retardant materials. This has caused an increase in the price of the power cord winding device.

[3] Also, since the connection between the contact piece 21 and the terminal plate 27 through the resin-molded wall surface 15 is not reliable due to the conductivity of the rivets 1-29, the outer periphery of the rivets 1-29 is not reliable. is provided with a cylindrical sleeve 30. Therefore, contact Ha21
The connection between the cable and the power cord 9 requires a rivet 1-29, a cylindrical sleeve 30, a terminal plate 27, and a screw for attaching and detaching the lead wire, and the structure is somewhat messy due to the large number of parts.

The problems in N), (2), and [3] below are not limited to power cord winding devices for vacuum cleaners, but also exist in power cord winding devices for other electrical equipment. It is a question of E.

[Purpose of the invention]

The present invention has been made in view of the following problems, and provides a power go 12 winding device that does not require removing the cord winding device from the main body of the electrical equipment when replacing the power cord. The purpose is to

[Summary of the invention]

The power coat winding device of the present invention allows only a portion of the winding device to be removed from the main body of an electrical device. That is, a part of the cylindrical part of the coat reel, together with a part of the wall surface, can be removed from the outside and used as a cord supporter.

This court supporter has a plurality of bosses or ribs formed only on a portion of the wall surface of the white G11, and allows the power cord to be inserted in a meandering manner, thereby functioning as a court supporter. Further, the power cord is connected to the rear end of the contact piece by a receptacle terminal. By using the receptacle end f, the connection between the power supply coat and the contact hole 1 can be easily disconnected by applying a tensile force to the power supply coat when the cord supporter is removed from the cord reel.

(1) The shape of the cord supporter is not particularly limited, but it is approximately fan-shaped with a part of the cylindrical part of the coat reel as an arc, and one end of the arc is attached to the inside of the cylindrical part of the cord reel. It has a protrusion for locking, and the other end of the arc has a mounting screw for mounting the coat supporter to the cord reel. By forming the substantially fan-like shape in this manner, the tool 1-supporter can be easily removed.

(2) The protruding structure of the contact piece may be the same as the conventional one, but in order to reduce the number of parts, the rear end of the contact piece may be structured to penetrate the wall surface. This structure eliminates the need for a cylindrical sleeve or terminal plate.

(:3) Also, the protruding contact piece on the wall must be non-flammable or flame-retardant.
It is also possible to perform this through an 11 contact unit consisting of 4 J-ports. This eliminates the need to form large areas of the winding device main body, such as walls, from non-combustible or flame-retardant materials.

[Embodiments of the Invention] Examples of the present invention will be described with reference to FIGS. 5 to 12. It should be noted that the same parts as in FIGS. 1 to 4 are given the same numbers and their explanations will be omitted.

Figure 5 corresponds to Figure 2 of the conventional example, and Figure 6 corresponds to Figure 4 of the conventional example.
do.

Reel case 11 forming the front half of the cord reel 10
A part of the cylindrical portion 13 serves as a removable cord supporter 41. This cord supporter 41 has a part of the cylindrical part +3 of the reel case 11 formed into an arc, and a part of the wall surface is cut off to the vicinity of the reel bearing 42 to form a substantially fan shape.

At one end of the arc, there is a protrusion 43 for locking inside the cylindrical portion 13 of the reel case 11. The other end of the arc has a mounting screw 44 for mounting the cord supporter 41 to the reel case 11. Further, a part of the arc of this =1-dosaver 41 forms an open portion 45 )13. A plurality of bosses 47 are formed on the wall portion /I6 of the cord supporter 41. The power cord 9 is inserted through the opening 45 and arranged in a meandering manner between the bosses 47. The cord supporter 41 performs its function through this meandering insertion and arrangement.

A lead wire 26 at the tip 9' of the power cord 9 inserted and arranged in a meandering manner in the cord supporter 41 is connected to the contact part 21. This connection structure will be explained with reference to FIG. The contact piece 21 is provided to protrude from the wall surface 15 via a contact piece stand 48 . The shape of the contact piece 21 and the contact piece base 48 are 9th, respectively.
10 and 111'gl, and FIG. 12. The contact piece 21 is connected to the reel support stand 22 by two contact parts 49.
23 (see Figure 5). The rear end of the contact piece 21 forms a thin plate-shaped cord connection part 50 that protrudes rearward. This cord connecting portion 50 is inserted into the insertion hole 51 of the contact piece base 48, and further projects to the rear of the wall surface 15 through the through hole 52 of the wall surface 15. The contact piece 21 and the contact piece base 718J are fixed to the wall surface 15 by fitting the rivet holes 53 into the rivet holes 53 provided at positions overlapping each other. A rivet receiver part 54 is provided on the wall surface 15 to receive the rivet 29.

On the other hand, according to this embodiment, the receptacle 55 is removed from the lead wire 26 of the power cord 9, and the receptacle is as follows. 1 There is no need to remove and disassemble the main body,
It is sufficient to simply remove the cord supporter 41° from the cord reel 10. The cord supporter 41 can be easily removed and attached using the attachment screws 44. At this time, a pulling force is applied to the receptacle terminal 55, so that it can be removed without touching the current-carrying part. This fully satisfies the requirement (1) of the foreign standard.

(2) Only the contact piece base 48 can be formed from a non-flammable or flame-retardant material, and the main body of the cord reel 10 (reel case 11 and Z/My case 12) can be molded by ordinary resin molding.

(2) Compared to the conventional example (see FIG. 4), the cylindrical sleeve 30 and the terminal plate 27 can be omitted, resulting in a reduction in the number of parts. In this embodiment, a contact piece stand 48 is added, but the number of parts is reduced even in this case.

〔Effect of the invention〕

According to the power cord winding device of the present invention, there is no need to remove the cord winding device from the main body of the voltage equipment when replacing the power cord, and work efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a cutaway view of the rear part of a vacuum cleaner in which the present invention is implemented;
2 is a sectional view showing the winding device 2 for the power cord 9 in FIG. 1, FIG. 3 is an internal front view of FIG. 2, and FIG. 4 is an enlarged view of the vicinity of the contact piece 21 in FIG. 5 is a sectional view showing the first embodiment of the present invention corresponding to FIG. 2, FIG. 6 is a view corresponding to FIG. 3 in FIG. 5, FIG. 7 is a plan view of FIG. 6, and FIG. The figures correspond to FIG. 4 in FIG. 5, FIG. 9 is a front view showing the contact piece 21 in FIG. 8, FIG. 10 is a plan view of FIG. 9, and FIG. 11 is a contact in FIG. 8. FIG. 12 is a front view showing the single stand 48, and FIG. 12 is a cross-sectional side view of FIG. 11. j'・Vacuum cleaner, 2.. Winding device, 3.. Filter case, 4.. Electric suction machine, 5.. Anti-vibration rubber, 6.
・・Vibration-proof rubber, 7・・Gear star, 8・・Transportation axle, 9・・Power cord, 10・・Coat reel, 11
・Reel case, 12・・Spring case, 13.16
...Cylindrical part, 14.17...Flange part, 15!18
・Wall surface, 19 ・Reel shaft, 20・Spring, 21
... Contact piece, 22 ... Reel support stand, 23. Slip ring, 25 ... Rib, 26 ... Riet wire, 27.
・Terminal plate, 28 ・Detachment screw, 29 ・Rivet, 30 ・Cylindrical sleeve, 4 tocoat sabota, 42 ・Reel bearing, 43 ・Protrusion, 44 ・Mounting screw, 45 ・Open Part, 46... Wall part, 47
・Boss, 49...Contact piece part, 50...Connection part, 51...
Insertion hole, 52... Through hole, 53... Rivet hole, 54
...Rivets Figure 3 9 Figure 4 85 Figure 3 )tyV Figure

Claims (1)

[Claims] 1. Power cord winding device V provided on the main body of the tunnel
1), the cord reel for winding the power cord l- is
It has a cylindrical shape with a 4+ mark on the inside, and is rotatably supported, and a contact J1 for supplying power to the electric machine body is protruding from the wall surface, and this contact piece is attached to the side of the electric machine body. When the reel comes into contact with the provided slip ring, the reel rotates. Then, a part of the cylindrical portion of the cord reel is 41? V. Along with a part of the surface, a coat supporter removable from the outside of the tool 1 to the reel is provided, and this tool 1 to 41 of the
Multiple bosses or ribs are formed only on the key part to connect the power supply 2 IF.
The power cord is inserted in a meandering manner, and the power cord is inserted into the rear end of the contact hole and connected to a receptacle terminal.
Ft-2, 'I'! In Figure 1, the range of r ii'F V/ is shown in Figure 1. It has a protrusion that locks inside the cylindrical part of the circle Q, and a cord supporter is attached to the other end of the circle Q.
A cord winding device that has several screws attached to the reel. 3. In claim 1, the power supply tool 1 to the winding device is provided with a rear end portion of the contact portion protruding through the wall surface. 4. In claim 1, the protrusions of the wall surface l\σ month V tentacle are made of non-flammable or flame-retardant material. 1 〆 [Power two 1 -winding device performed via a square.