JPH021326Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cord winding device, for example, a cord winding device for winding and storing a power cord connected to an electrical appliance such as a vacuum cleaner.

[Conventional technology]

In the conventional cord winding device of this type, the cord reel was composed of two parts made of synthetic resin.
Recent advances in molding technology have led to the adoption of integrally molded structures made of synthetic resin. For example, a structure in which the cord reel is integrally molded is described in Japanese Utility Model Application Publication No. 52-65884. This structure is shown in FIG. 13, where the cord reel 1 is
a drum section 3 for winding the cord 2; and a drum section 3 for winding the cord 2.
guide ring parts 4, 4 projecting outward in the radial direction from both end edges of the drum part 3, a support plate part 5 formed inside the drum part 3, and a shaft support 6 provided at the center of the support plate part 5. The cord 2 is inserted into the inside of the drum part 3 through the cord insertion hole 7 formed in the drum part 3 of the cord reel 1, and the cord 2 is connected to the terminal part 10 of the mounting plate 9 provided with the annular rings 8, 8. The mounting plate 9 is attached to the inside of the drum section 3.

Further, for example, as described in Japanese Utility Model Publication No. 13574/1980, a structure is known in which a portion of the drum portion of the cord reel is cut out to form openings on both sides.

[Problem that the invention attempts to solve]

In the conventional cord winding device having the structure described in the above-mentioned Japanese Utility Model Publication No. 52-65884 and FIG. This must be done after the cord 2 has been inserted into the cord insertion hole 7 of the section 3, resulting in problems such as poor workability, lack of reliability in electrical connection, and loss of productivity.

Furthermore, the cord winding device having the structure described in Japanese Utility Model Publication No. 13574/1983 has a problem in that the strength of the cord reel is reduced.

The present invention was devised in view of the above-mentioned problems, and aims to provide a cord winding device that is highly productive, inexpensive, and has high mechanical strength.

[Means for solving problems]

The cord winding device of the present invention includes a substantially cylindrical drum portion for winding a cord, a disc-shaped guide ring portion projecting outward in the radial direction from both end edges of the drum portion, and the drum portion. a support plate part provided on the inner side of the part to support electrical components; a cylindrical shaft part provided in the inner part of the support plate part to rotatably support the drum part; The guide ring part and the barrel part which houses the mainspring spring which is provided on the outside part and which biases the rotational force are integrally molded of synthetic resin, and the cord is inserted into the drum part and inserted into the inside of this drum part. A cord reel with a hole is provided, and a notch groove larger than the diameter of the cord is formed in the drum section between the support plate section and the guide ring section on the side opposite to the side where the barrel section is formed of the cord reel. The guide ring portion is characterized in that an insertion portion is formed in the guide ring portion to communicate with the notch groove and into which a plug, a terminal, a mounting plate, or the like is inserted.

[Effect]

The cord winding device of the present invention connects the cord to the terminal part of the mounting plate without inserting the cord through the cord insertion part formed in advance on the drum part of the cord reel, and guides the plug connected to the cord on the cord ring. A cord reel is assembled by passing the cord from the outside of the ring part through the insertion part into the inner drum part, or by inserting the terminal or mounting plate to which the cord is connected from the inside drum side of the guide ring part through the insertion part and into the outside of the guide ring part. be.

〔Example〕

Next, the structure of an embodiment of the present invention will be explained with reference to FIGS. 1 and 2.

Reference numeral 11 denotes a cord reel, which includes a substantially cylindrical drum part 13 for winding the power cord 12, and this drum part 13.
A cord 1 protrudes outward in the radial direction from both end edges in a brim shape and is wound around the drum portion 13.
Disc-shaped guide ring parts 14 and 15 that hold 2
a support plate portion 16 provided at the center of the inner circumference of the drum portion 13; and a cylindrical shaft support 17 provided at the center of the support plate portion 16 and rotatably supporting the drum portion 13. , a barrel section 1 that accommodates a mainspring spring 18 that is provided on the outer side of the support plate section 16 and one of the guide ring sections 14 and that biases rotational force.
9 are integrally molded from synthetic resin. The drum part 13 of the cord reel 11 is provided with an insertion hole 20 through which the cord 12 is inserted into the drum part 13, and the barrel part 19 is formed by an annular projecting wall provided on the outer surface of the guide ring part 14. 21 and located in this barrel part 19, the support plate part 1
6 is provided with radial ribs 22 that are flush with the outer surface of the guide ring portion 14. Further, the drum portion 13 between the support plate portion 16 and the other guide ring portion 15 on the side opposite to the side on which the barrel portion 19 of the cord reel 11 is formed has a diameter larger than the diameter of the cord 12 and a hole 20 that is larger than the diameter of the cord 12. A notched groove 23 having a narrow narrowed portion 57 on the guide ring portion 15 side is formed to communicate with the insertion hole 20, and the other guide ring portion 15 communicates with the narrowed portion 57 of the notched groove 23. and said code 12
An insertion portion 25 is formed into which a plug 24 connected to the plug 24 can be inserted.

Next, 26 is a mounting plate for the cord reel 11.
The cord reel 11 is fitted into the drum part 13 facing the support plate part 16, and is positioned by coming into contact with a support step part 27 formed integrally with the peripheral edge of the support plate part 16 of the cord reel 11. It is molded from an insulating material such as a synthetic resin into a disk shape having a center hole 28 formed in the center thereof through which the shaft support 17 is inserted. This mounting plate 26 is connected to the support plate portion 16.
The cord 12 introduced inside the drum part 13 with
It is designed so that it can be attached to the cord reel 11 by sandwiching it.

Contact rings 30 and 31 are arranged concentrically from the center of the mounting plate 26, and the contact rings 30 and 31 are arranged concentrically from the center.
0 and 31 are fixed to the mounting plate 26 with caulking pieces, and are electrically connected to the contact rings 30 and 31, respectively, to connect the cord 12 to the terminals 33,
34 projects from the inner surface of the mounting plate 26.

Further, a closing protrusion 3 that fits into the notch groove 23 of the cord reel 11 is provided on the periphery of the mounting plate 26.
5 protrudes outward. Furthermore, an engagement protrusion 36 that is shorter than the closure protrusion 35 is provided on the peripheral edge of the mounting plate 26 at a symmetrical position opposite to the closure protrusion 35 . It is adapted to be engaged with an engagement hole 37 formed in the portion 13.

The outer end of the mainspring spring 18 housed in the barrel part 19 of the cord reel 11 is fixed to the barrel part 19, the inner end is fixed to the rotating shaft 38, and the inner side of the mainspring spring 18 is used to support the cord reel 11. It is supported by ribs 22 provided on the plate portion 16. A locking protrusion 3 is located near the inner periphery of this barrel portion 19.
9 and 39 are provided in a protruding manner, and a locking hole 40 is formed in each of the locking protrusions 39 and 39.
Projecting pieces 4 protruding from both ends of the holding plate 41 at 0 respectively.
The hook-shaped claws 43 of 2 and 42 are respectively locked, and the third
As shown in the figure, the mainspring spring 18 is prevented from protruding outward by the holding plate 41. Further, a protrusion 49 for locking and fixing the outer end of the mainspring spring 18 is provided on the peripheral edge of the barrel portion 19 of the cord reel 11.

Further, the rotating shaft 38 is inserted into the shaft support 17 of the cord reel 11 through the through hole 44 of the holding plate 41,
Insert into the shaft support hole 45 of the fixed contact stand 29, and connect the rotating shaft 3.
Lock the hook-shaped locking claw 46 formed at the tip of 8,
A rotating shaft 38 is fixed to a fixed contact stand 29, and the cord reel 11 is rotatably supported.

Further, the fixed contact base 29 is provided with contact pieces 47 and 48 that are brought into contact with contact rings 30 and 31 provided on the mounting plate 26 attached to the cord reel 11, respectively.

It should be noted that a brake piece made of rubber or the like, which is operated by a well-known lever operation (not shown), is brought into contact with or separated from the outer or inner circumference of the barrel portion 19 of the cord reel 11.

Next, the operation of this embodiment will be explained.

When assembling, the plug 24 connected to the tip of the cord 12 is inserted from the outside into the insertion part 25 formed in the guide ring part 15 of the cord reel 11, the cord 12 is pulled out, and the cord 12 is inserted into the notch groove 23.
The mounting plate 26 is guided into the drum part 13 from the cord 12 and the base end of the cord 12 is connected to the terminals 33 and 34, and then the mounting plate 26 is fitted into the drum part 13 of the cord reel 11.
The closing protrusion 35 of 6 is inserted into the notch groove 2 of the cord reel 11.
3 and the engagement protrusion 36 into the engagement hole 37.
to attach the mounting plate 29 to the cord reel 11. In this state, the edge of the closing protrusion 35 of the mounting plate 26 is engaged with a step 58 formed by the narrow part 57 on the outside of the notch groove 23, and the mounting plate 26 is prevented from coming off. A rotating shaft 38 inserted through the shaft support 17 is inserted and fixed into the fixed contact base 29, and the cord reel 11 is rotatably supported. In this state, the cord 12 is positioned in the insertion hole 20 of the drum section 13 and then pulled out, and the cord 12 is wound around the drum section 13.

When the cord 12 is pulled out, the shaft support 17 of the cord reel 11 rotates around the rotating shaft 38, and the mainspring spring 18 is wound and urges the cord reel 11 in the winding direction of the cord 12, causing a brake piece (not shown) to rotate. When released, the cord reel 11 is biased by the mainspring spring 18 and rotated in the winding direction of the cord 12.

In the embodiment described above, the mounting plate 26 has a protrusion 35,
36, and the protrusions 35 and 36 are attached to the cord reel 11 by engaging with the cutout groove 23 and the engagement hole 37 of the cord reel 11, so the cutout groove 23 of the cord reel 11 is closed. It is closed by the protrusion 35, so that even if the cord 12 becomes slack when the cord 12 is being wound in, the cord 12 will not be caught in the notch groove 23 and will not be wound in properly. As shown in , a pair of engagement protrusions 36 , 36 are provided protrudingly on the mounting plate 26 , and a pair of engagement holes 37 are formed in the drum portion 13 of the cord reel 11 in addition to the notch groove 23 . It is also possible to attach the plate 26 to the cord reel 11 by pushing the engagement protrusions 36 into the engagement holes 37, respectively.

Next, the configuration of another embodiment will be explained with reference to FIGS. 5 and 6.

In this structure, the insertion portion 25 formed in the guide ring portion 15 of the cord reel 11 is formed in a size large enough to allow the terminals 33 and 34 to be inserted therethrough. With this structure, there is no need to extract the entire length of the cord 12, and the size of the guide ring portion 15 can be adjusted to fit the terminals 33, 34.
It is sufficient to form the cord reel 11 in a size that allows the cord reel 11 to be inserted therethrough, and the strength of the cord reel 11 can be increased by making the insertion portion 25 small.

In this embodiment, the terminals 33 and 34 are attached to the mounting plate 26 by connecting them to the contact rings 31 and 32, or the terminals 33 and 34 are fixed to the mounting base 52 of the support plate part 16 with screws, etc., and the fixed contacts are fixed. stand 29
An annular contact piece is provided on the contact piece, and a terminal 33,
It is also possible to omit the mounting plate 26 by directly contacting the contact portion 50 formed on the contact portion 34 .

The structure of yet another embodiment will be explained with reference to FIGS. 7 to 11.

The insertion portion 25 formed in the guide ring portion 15 of the cord reel 11 is made large enough to allow the attachment plate 26 to be inserted therethrough, as shown in FIG. A portion of the periphery to be contacted (the chain line portion in FIG. 9) is cut out to form the periphery into a shape consisting of upper and lower arcuate portions 53 and left and right chordal portions 54.

Further, as shown in FIG. 9, a closing protrusion 35 is formed on the upper part of the mounting plate 26, and an engaging protrusion 36 is formed on the lower part, and the inner surface of the mounting plate 26 is provided with a closing protrusion 35 as shown in FIG. Groove-shaped cord engagement part 5
5 is formed, and a protrusion 56 for holding the cord 12 is formed in this engaging portion 55.

Next, the operation of this embodiment will be explained.

Connect the base end of the cord 12 to the terminal 3 of the mounting plate 26 in advance.
3 and 34, the cord 12 is engaged with the engaging portion 55 as shown in FIG.
is inserted from the inside to the outside of the insertion part 25 of the guide ring part 15 of the cord reel 11, the mounting plate 26 is fitted inside the drum part 13 of the cord reel 11, and the closing protrusion 35 of this mounting plate 26 is inserted. is engaged with the notch groove 23 of the cord reel 11, and the engagement protrusion 36 is pushed into the engagement hole 37 and engaged. In this state, the closing protrusion 35 of the mounting plate 26 is connected to the notch groove 2.
The mounting plate 26 is locked to a stepped portion 58 formed at the narrowed portion 57 on the outside of the mounting plate 3, thereby preventing the mounting plate 26 from coming off.

In this structure, since the mounting plate 26 is inserted through the insertion portion 25 of the cord reel 11, there is no need to insert the entire length of the cord 12, and the mounting plate 26 is notched on both sides to be narrow in width. 25 can be made narrower without compromising the strength of the cord reel 11, and since the mounting plate 26 is formed with a string-like part 54, the inner part of the drum part 13 of the cord reel 11 can be narrowed as shown in FIG. By matching the shape of the periphery to the shape of the mounting plate 26, even if a tensile force is applied to the cord 12, the chord-shaped portion 54 of the mounting plate 26 acts to prevent rotation, and the mounting plate 26 is not rotated, thereby preventing the machine from rotating. It also increases the strength of the target.

In addition, since the closing protrusion 35 of the mounting plate 26 closes most of the notch groove 23, even if the cord 12 becomes slack, the cord 12 will not get caught in the notch groove 23.
There is no possibility of the cord 12 being caught incorrectly, and the surface of the cord 12 is not damaged, and since the engagement hole 37 is also used as the notch groove 23,
The strength of the cord reel 11 can be maintained, the shape of the cord reel 11 can be easily made, and the cord reel 1
1 can be made at low cost.

Furthermore, since the cord engaging portion 55 is formed on the mounting plate 26 and is held between the protrusions 56, the cord 12 is held between the support plate portion 26, and the cord 12 can be securely locked. It has strength against the tensile force of the cord 12, and the workability of attaching the attaching plate 26 is improved. Further, the thickness of the mounting plate 26 is increased at the projecting wall 59 forming the engaging portion 56, thereby increasing the strength of the mounting plate 26 itself.

[Effect of idea]

According to the present invention, a notched groove larger than the diameter of the cord is formed in the support plate portion and the guide ring portion on the side opposite to the side where the barrel portion of the cord reel is formed, and communicates with the cord insertion hole formed in the drum portion of the cord reel. The guide ring part is formed with an insertion part that communicates with the notch groove and allows the insertion of plugs, terminals, mounting plates, etc., so that the cord can be inserted through the guide ring part. The cord reel can be assembled by inserting it through the guide ring, improving productivity and assembly workability.Furthermore, the cord reel does not require large holes in the drum section, does not reduce the strength of the cord reel, and is inexpensive. It can be assembled into

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of a cord winding device showing an embodiment of the present invention, Fig. 2 is a perspective view of the above cord reel, Fig. 3 is a perspective view of the above cord reel from the opposite side, and Fig. 4 is a perspective view of the above cord reel. 5 is an exploded perspective view of a cord winding device showing another embodiment, FIG. 5 is an exploded perspective view of a cord reel of the cord winding device showing still another embodiment,
FIG. 6 is a rear view of the same as above, FIG. 7 is a perspective view of a cord reel of a cord winding device showing another embodiment, FIG. 8 is a perspective view of same as above when assembled, and FIG. 9 is a perspective view of the same as above mounting plate. , FIG. 10 is an exploded perspective view of the engaging portion between the above mounting plate and the cord reel, FIG. 11 is a longitudinal sectional front view of the above, and FIG. 12 is a perspective view of the same above mounting plate.
FIG. 3 is a perspective view of a conventional cord reel. 11...Code reel, 12...Code, 13
...Drum part, 14,15...Guide ring part,
16... Support plate part, 17... Pivotal support, 18... Mainspring spring, 19... Barrel part, 20... Cord insertion part, 23... Notch groove, 25... Insertion part, 26...
...Mounting plate, 35...protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A generally cylindrical drum part for winding a cord, and a disc-shaped guide ring part projecting outward in the radial direction from both ends of the drum part, a support plate portion provided at the center of the drum portion; a cylindrical shaft support provided on the inner side of the support plate portion for rotatably supporting the drum portion;
The support plate part and a barrel part which is provided on the outer side of one of the guide ring parts and houses a spring spring that applies rotational force are integrally molded of synthetic resin, and a cord is attached to the drum part. A cord reel is provided with an insertion hole drilled inside the cord reel, and a notch larger than the diameter of the cord is provided in the drum portion between the support plate portion and the guide ring portion on the side opposite to the side where the barrel portion of the cord reel is formed. A cord winding device characterized in that a groove is formed in communication with the insertion hole, and the guide ring portion is formed with an insertion portion for a plug, a terminal, a mounting plate, etc. in communication with the notch groove. (2) A utility model characterized in that the mounting plate attached to the inner side of the drum part of the cord reel is integrally provided with a protrusion that closes the notch groove of the drum part and is fitted and locked in the notch groove. Scope of registration claims No. 1
Cord winding device as described in section.