JPH067539Y2 - Code for cord reel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cord for a cord reel used for a cord reel attached to an electric product, a telephone, or the like.

<Prior Art> In a cord reel, a spool is rotatably arranged in a casing, and one end surface of an electric cord (hereinafter, referred to as a cord) is provided between a side wall of the spool and an inner side surface of the casing. It is wound in the form of a spiral one after another. Then, when one end side of the cord guided to the outside of the casing is pulled, the spool around which the cord is rotated can be pulled out to the outside of the casing. On the other hand, the biasing force of the mainspring causes the spool to rotate in the reverse direction. It is designed so that the pulled out cord can be appropriately pulled back into the casing,
It is convenient for handling long codes. Therefore, it has been widely used by being attached to electric products, telephones and the like.

As the cord used in this conventional cord reel, the cord shown in FIG. 6 is well known.

This cord consists of four conductors (10) ... (10) each coated
Are arranged so that the adjacent and horizontal conductors come into contact with each other without a gap, and these are covered with a resin outer casing (20) to be integrated. The shape of this cord is an elliptic cylindrical shape with bulges on the upper and lower surfaces. However, when used for a cord reel, one end of the cord must be wound along the side wall of the spool between the inner side surface of the casing and the side wall of the spool so that the upper surface and the lower surface are superposed and wound in a spiral shape. Therefore, if the upper and lower surfaces have bulges, a large amount cannot be wound on the reel spool, and since it is an elliptic cylinder, it can be neatly stacked and wound along the spool. There is a problem that you can not.

Therefore, the applicant of the present invention has developed the code shown in FIG. 7 to make up for the drawbacks of the above code.

In this cord, the coated wires (10) '... (10)' are lined up without gaps like the above-mentioned cord, and these are coated with resin (2).
It is covered with (0) 'and integrated.

As shown in the figure, the shape of the cord is a thin columnar flat column having an upper surface and a lower surface horizontally and flatly formed. The advantage of this cord is that it has a small thickness so that it can be wound in a large amount when wound on a reel spool.

However, since this cord is flat with no gaps in the conductors (10) '... (10)' and has a thin thickness, it is crushed as shown in Fig. 8 when pressed inward from the side surface. , Once deformed, the wires will be piled up and it will be difficult to return to the original shape. When the cord is wound in the cord reel, as shown in FIG. 9, the cord is provided between the inner side face a1 of the casing a and the side wall b1 of the spool b, and the side faces c3 and c3 of the cord c are attached to the casing a. Inner surface a1
Also, since the side wall b1 of the spool b is wound in a spiral shape along the side wall b1 of the spool b, the side surface c3 contacting the side wall b1 of the spool b is formed into a curved curved surface. In some cases, the upper surface c1 and the lower surface c2 of the cord b are arbitrarily inclined with respect to the side wall b1 of the spool b, and a gap d is formed between the adjacent upper surface c1 and lower surface c2. As a result, there is a problem that the entire cord pulled out of the casing cannot be stored in the casing.

On the other hand, in Japanese Utility Model Laid-Open No. 59-105712, for example, two conductors are set as a set, and a plurality of conductors are arranged in a straight line by providing a predetermined interval for each set, thereby making it difficult to deform. Cables have been proposed.

However, even in this case, since both side surfaces are formed into curved curved surfaces, when this is used for a cord reel, a gap is created between the upper surface and the lower surface of the cord as in the case shown in FIG. The problem remains that the entire cord that is wound while being wound and pulled out of the casing cannot be stored in the casing.

<Problems to be Solved by the Invention> In view of the above circumstances, the present invention makes it possible to sequentially arrange the drawn cords along the side wall of the spool of the reel and wind them in a spiral shape. The purpose is to provide cords for cord reels that do not.

<Means for Solving the Problems> A spool (5) is rotatably disposed in a casing (4), and an inner side surface (4a) of the casing (4) and a side wall (52a) of the spool (5) are provided. While winding one end face of the cord (3) along the side wall (52a) of the spool (5) in sequence, wind the cord in a spiral shape.
By pulling one end side (3a) of (3), the spool (5) wound with the cord (3) rotates, the cord (3) is pulled out of the casing (4), and the spring of the spring (6) urges it. Spool (5)
In the cord for cord reel used in the cord reel (R) in which the cord is rotated in the reverse direction and the cord (3) is pulled back into the casing (4), the present invention provides the following to solve the above problems. Settled.

The cord (3) for the cord reel of the present invention is composed of an even number of four or more conducting wires (11), (12), (13) and (14) and a resin outer casing (2).

Conductor wires (11), (12), (13) and (14) are arranged such that two adjacent wires form one set and a predetermined gap (S) is provided between these two sets. To be done.

The resin exterior body (2) is filled with the conductor (11) (12) (13) (14) and the gap (S) around the conductor (11) (12) (13) (14).
And is made flat so that the upper surface (21) and the lower surface (22) of the resin outer package (2) are substantially horizontal. Further, one side surface (24) of both side surfaces is a flat surface that is substantially perpendicular to the upper surface (21) and the lower surface (22), and the other side surface (23) is a semi-cylindrical curved surface.

The resin outer casing (2) has a flat side surface (24) between the inner surface (4a) of the casing (4) and the side wall (52a) of the spool (5). ), The other side surface (23) having a curved surface is disposed on the side wall (52a) side so as to be on the inner side surface (4a) side of the casing (4).

<Operation> In the present invention, two adjacent conductors (11) (12) (13) (14)
Among them, two adjacent ones are made into a set, and a predetermined gap (S) is provided between these sets to make it difficult to deform.

Also, one side surface (24) of the resin exterior body (2) is the upper surface (21).
And the lower surface (22) as a substantially vertical plane, and the other side surface (23) as a semi-cylindrically curved curved surface, and the resin exterior body (2) thus formed is used as a casing (4 ) Inner side surface (4a) and the side wall (52a) of the spool (5), the one side surface (24) on the side surface (52a) side of the spool (5) and the other side surface curved. (23) is arranged so as to be on the inner side surface (4a) side of the casing (4).

By doing so, the flat side surface (24) can be aligned with the side wall (52a) of the spool (5) and can be brought into abutment in a stable state, and the side wall (52a) of the spool (5) is always present. On the other hand, the upper and lower surfaces of the cord (3) can be made vertical and wound in a spiral shape. As a result, the festival will be held
The upper surface (21) and the lower surface (22) which are adjacent to each other can be wound on the spool (5) in a state where they are closely aligned with each other.

On the other hand, the side surface (23) of the cord formed in the curved surface can minimize the contact area with the inner side surface (4a) of the casing (4) and keep the friction coefficient low. That is, when the spool (5) is rotated, the cord wound around the spool (5) is rubbed against the inner surface (4a) of the casing (4), but the cord acts as described above. , It does not hinder the rotation of the spool (5).

<Embodiment> A preferred embodiment of the present invention will be illustratively described in detail below with reference to the drawings. However, the dimensions, shapes, materials, relative positions, etc. of the components described in this embodiment are not intended to limit the scope of the present invention to them unless otherwise specified. , It is just an example of explanation.

FIG. 1 is an enlarged sectional view showing an embodiment of the present invention. This cord (3) is composed of four conductors (11) (12) (13) (14) and a PVC resin covering them. It consists of an exterior body (2).

Conductors (11) (12) (13) (14) are made of polypropylene insulation (11
a) It consists of quadruple wound copper foil covered with (12a) (13a) (14a), and they are arranged so as to be parallel to each other horizontally. In addition, these conducting wires (11) (12) (13) (14) form a set of two adjacent wires, and between the pair of conducting wires (11) (12) and (13) (14), In this embodiment, a gap (S) of about 0.4 mm is set. In addition, conductor (11)
… The outer diameter of (14) is 0.97− including the insulator (11a)… (14a).
0.03 mm (not limited to this).

On the other hand, the resin exterior body (2) is a conductor wire arranged as described above.
(11) ... (14) are covered and integrated as shown in the figure. The space (S) between the conductors is filled with this resin outer casing (2).

The upper surface (21) and the lower surface (22) of the resin outer package (2) are provided flat so as to be horizontal, and the distance between the upper surface (21) and the lower surface (22) is It is set as short as possible within the coating durability limit of 2). As a result, the thickness of this cord (3) is reduced, and in this embodiment, 1.9 to 1.89.
mm. In addition, cut in the center of the lower surface (22) for inspection.
Although (K) is provided, the lower surface (22) is understood to be a plane even if this cut (K) is present.

Further, among the side surfaces of this resin outer package (2), the left side surface (23) is provided on a curved surface having a hemispherical cross section, and the right side surface (24) is provided on a plane where the cross section is vertically upright. Although the surface of the right side surface (24) is represented by a perfect straight line in the drawing, it may be slightly bulged inward and outward as long as the straightened cord is in a range where the right side surface faces downward. The distance between these side surfaces, that is, the width of the cord (3) is 4.9 to 4.89 mm in this embodiment.

The code (3) of the embodiment having the above configuration is, for example, the second
It is used by being wound around the cord reel (R) shown in Figs. 4 to 4, but before describing the method, this cord reel (R) is used.
The outline of (R) is explained.

2 is a plan view of the cord reel (R), and FIG. 3 is a second view.
It is the sectional view on the AA line of a figure.

This cord reel (R) consists of a casing (4) and a casing.
It comprises a spool (5) rotatably supported in (4) and a spring spring (6) arranged in the casing (4) and biasing the spool (5) in a predetermined rotation direction.

As shown in FIG. 3, the spool (5) includes a first spool (51) and a second spool (52), both of which are fitted and integrated. The withdrawal cord (3a) used for withdrawing is wound around the first spool (51), and the second spool (52) is continuous from the base of the withdrawal cord, and the front end is fixed to the casing (4). The free play cord (3b) is wound in the same direction as the drawer cord (3a).

That is, this cord reel (R) has one continuous cord (3
It is a non-contact type cord reel in which a) (3b) = (3) is wound around the first and second spools (51) (52), and the play cord (3b)
The flexure allows the spool (5) to rotate when the pull-out cord (3a) is pulled out (see FIG. 4).

Now, return to the description of the code of the embodiment.

As described above, the cord (3) has the pull-out cord (3a) at one end and the play cord (3b) at the other end with the center as a boundary. The drawer cord (3a) is wound around the first spool (51), and the play cord (3b) is wound around the second spool (52) in the same direction.

The cords (3a) and (3b) of both sides have a right side surface (24) provided flat with a left side surface (23) having a curved cross section.
Are wound so that they are on the bottom (see FIG. 2).

The cord (3) wound in this way is especially suitable for the second spool.
One side such as (52) has a side wall (52a), while the other side is effective when the side surface (4a) of the casing (4) is used. That is, the flat right side of the cord (3b)
Since the (24) abuts the side wall (52a) of the second spool (52) in a stable state, the play cord (3b) is always arranged in a neat state even if the slack and winding are repeated. can do.

Also, the left side surface (23) of the play code (3b) provided on the curved surface is
It is possible to minimize the contact area on the side wall (4a) of the casing (4) and keep the friction coefficient low. That is,
When the second spool (52) rotates, the play code (3
Although b) is rubbed against the side wall (4a) of the casing (4), even in that case, the rotation of the spool (5) is not hindered. Further, the cord (3) provided with the upper surface and the lower surface substantially horizontal (the same as the horizontal direction of the conducting wire) and the distance between the upper surface and the lower surface being as short as possible has a small thickness. A large amount can be wound around the spool (5).

That is, since a cord can be wound with a large number of windings, that is, a long length, in a spool having a limited winding radius, when a cord reel wound with this cord is used in a telephone, the movement range of the telephone is reduced. It can be wider.

And, the resin of the resin outer casing (2) filled between the pair of conductors is a common sense that the pressing force can occur on a daily basis even if the pressing force is applied to the cord from the side direction. If it is a thing, it will not collapse. Even if the pressing force is extremely strong and the cord is deformed, the cord is automatically restored to its original shape if the pressing force is removed.

Incidentally, FIG. 5 is an enlarged sectional view showing the cord of the second embodiment.

This cord (3) 'consists of six conductors (11)' (12) '(13)' (1
4) '(15)' (16) 'and a PVC resin outer casing (2)' covering these conductors (11) '... (16)'.

The conductors (11) '... (16)' are made of an insulating material (11) as in the previous embodiment.
a) '... (16a)' are copper wires covered with copper wires arranged horizontally parallel to each other. And these conductors
(11) '... (16)' is a set of two adjacent wires, one set of conductors (11) '(12)', (13) '(14)', and (15) '(16) A space (S) '(S)' of about 0.4 mm is provided between each of the '.

On the other hand, the resin sheathing body (2) 'covers the entire conductors (11)' ... (16) 'and fills the gaps (S) (S) between the pair of conductors.

Further, the cord (3) 'in which the upper, lower, left and right surfaces of the resinous outer casing (2)' are provided in the same manner as in the previous embodiment also has the same effect as that of the above embodiment.

<Effects of the Invention> As described above, in the cord of the present invention, since the resin of the resin outer casing is filled between the pair of conductive wires, a pressing force is applied to the cord from the side direction. However, if the pressing force is a common sense that can occur everyday, it will not collapse. Even if the pressing force is extremely strong and the cord is deformed, the cord is automatically restored to its original shape if the pressing force is removed.

Further, the flat side surface of the resin outer casing can be stably contacted along the side wall of the spool, and the upper surface and the lower surface of the cord can be always wound vertically with respect to the side wall of the spool. When winding the cord drawn out of the casing, it is possible to wind the cord in a spiral shape in sequence in a state where the adjacent upper surfaces and lower surfaces are brought into contact with each other to be neatly arranged. Therefore, it is possible to prevent the entire pulled-out cord from being unable to be stored in the casing.

On the other hand, it is possible to prevent the side surface of the cord formed on the curved surface from interfering with the rotation of the spool.

As described above, the present invention can provide a useful and practical cord suitable for a cord reel.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view showing a first embodiment of the present invention, and FIG.
FIG. 4 is a plan view of a cord reel around which a cord is wound, FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 4 is a plan view showing a state where a drawer cord is pulled out from the cord reel, and FIG.
FIG. 7 is an enlarged sectional view showing the second embodiment, FIG. 6 is an enlarged sectional view showing the cord of the first conventional example, FIG. 7 is an enlarged sectional view showing the cord of the second conventional example, and FIG. FIG. 7 is an enlarged cross-sectional view showing a modification of the cord. FIG. 9 is a partial cross-sectional view of the conventional cord shown in FIG. 7 wound around a cord reel. (11) (11) ′ (12) (12) ′ (13) (13) ′ (14) (14) ′ (15) ′ (1
6) '... conducting wire, (2) (2)' ... resin exterior body, (3) ... cord,
(3a) ... drawer cord, (3b) ... play cord, (S) ... gap, (R) ... cord reel, (5) ... spool.

Claims (1)

[Scope of utility model registration request] Claims: 1. A spool (5) is rotatably disposed in a casing (4), and a cord is provided between an inner side surface (4a) of the casing (4) and a side wall (52a) of the spool (5). (3) One side of the cord is wound along the side wall (52a) of the spool (5) in a spiral shape and the cord (3) is pulled at one end side (3a).
The spool (5) wound around (3) rotates, the cord (3) is pulled out of the casing (4), and the spool (5) reversely rotates due to the urging force of the spring spring (6), and the cord (3) Is the casing
(4) In the cord for a cord reel (R) adapted to be pulled back inside, the cord (3) is an even number of four or more conductor wires (11) (12) (13).
(14) and the resin outer casing (2), and the conductors (11), (12), (13) and (14) form a set of two adjacent wires and a set of these two sets. The outer sheath made of resin (2) fills the peripheries of the conductors (11), (12), (13), and (14) and the gap (S). Conducted by conducting wire (11) (12) (13) (14)
Is made flat so that the upper surface (21) and the lower surface (22) of the resin exterior body (2) are substantially horizontal, and one side surface (24) of both side surfaces is the upper surface (21) and the lower surface. (22) is formed into a substantially vertical plane, the other side surface (23) is a semi-cylindrical curved surface, and the resin exterior body (2) is an inner surface (4a) of the casing (4). ) And the side wall (52a) of the spool (5).
(24) is arranged on the side wall (52a) side of the spool (5), and the other side surface (23) that is a curved surface is arranged on the inner side surface (4a) side of the casing (4). Code for the cord reel.