JP2587904B2 - Electric wire wound drum - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire winding drum, and more particularly to a technique for protecting an electric wire wound around a drum body.

[0002]

2. Description of the Related Art Conventionally, a body is formed by winding a wire, two flanges of the same shape attached to both ends of the body, and screws for connecting the body and the collar. A known electric wire winding drum is known (for example, see Japanese Patent Application Laid-Open No. 5-254).
736).

[0003]

By the way, in the conventional electric wire winding drum, the electric wire is stored in a state of being exposed to the outside. For example, when the electric wire winding drum is exposed outdoors, the electric wire is wound on the electric wire by rain or snow. There is a problem that rust easily occurs. Also, if the entire wire winding drum is covered with a vinyl sheet or the like, it takes time to attach the vinyl sheet, and the vinyl sheet is turned up by wind, or a mouse or the like enters the wire winding drum and bites the wires. In coastal areas and the like, there is also a problem that the core of the electric wire and the jacket are easily deteriorated due to salt damage.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object a simple structure that can prevent rust caused by rain or snow and prevent electric wires from being damaged by rats and salt damage. Drum cover material that can reliably protect
An object of the present invention is to provide an electric wire winding drum which can be easily attached to and detached from a body .

[0005]

In order to solve the above-mentioned problems, the present invention provides a pair of flanges 5, 5 at both ends 4c of a body 4.
Is provided, a drum body 2 is formed, and a gap G between the outer peripheral ends 5c of the two flange portions 5, 5 in the drum body 2 is covered with a cylindrical cover member 3 having self-retaining property. cover member 3 while being divided into a plurality circumferentially C, both the flange portion
A plurality of locking holes 20 are provided at the outer peripheral end 5c of
And one of the flanges 5 is attached to one end of the cover material 3 in the axial direction D.
A projection 22 which can be inserted into the locking hole 20 protrudes, and a cover material is provided.
3 at the other end in the axial direction D and into the locking hole 20 of the other collar 5
It is characterized in that a split pin 23 which is engaged and disengageable is projected .

[0006]

[0007]

According to the] Thus the present invention, with a plurality divide the cover member 3 of the tubular having a self-shape retention in the circumferential direction C, de
A plurality of locking holes 2 are formed in the outer peripheral end 5c of both the flange portions 5 and 5 of the ram body.
0, and one end of the cover material 3 in the axial direction D
A protrusion 22 that can be inserted is protruded into the locking hole 20 of the collar portion 5,
Engagement of the other brim 5 with the other end of the cover 3 in the axial direction D
A split pin 23 that is detachably engaged with the hole 20 is protruded.
Thereby, the protrusion 22 of the cover member 3 and the split pin 23
Attaching the cover material 3 to the outer peripheral end 5c of the two brim portions 5 by utilizing
Easy and one-touch removal and removal by hand
By using the cover material 3 , it is possible to prevent rain and snow from being applied to the electric wires, thereby preventing rust from occurring, and to surely protect the electric wires from damage by rats and salt damage.
it can.

[0008]

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The electric wire winding drum 1 used in the present embodiment includes, for example, a drum body 2 on which an electric wire (not shown) having a diameter of about 20 mm is wound, and a cover member 3 for covering the electric wire wound around the drum body 2. As shown in FIGS. 1 and 2, the drum body 2 has a pair of flanges 5 at both ends 4 c of the body 4.
Is provided. The body 4 and the two flanges 5 are integrally assembled with resin, or the resin body and the two wooden flanges are integrally assembled.
In this embodiment, the body 4 and the two flanges 5 are assembled using bolts 6 and nuts 7 described later.

First, as shown in FIG. 8, the body 4 of the drum body 2 has a cross-sectional shape of an outer surface 4b which is formed with a gradient of zero to facilitate winding of an electric wire, whereas a cross-sectional shape of an inner surface 4a. Has a downward slope M from the center in the axial direction D toward both ends 4c, and water entering through the shaft hole 100 of the body 4 and dew condensation water adhering to the inner surface 4a of the body 4 have a downward slope M. A large number of drain holes 15 collected at both ends 4a of the body portion 4 and provided in both flange portions 5 of the drum body 2 (FIG. 3)
It is structured to be drained from the outside. As shown in FIGS. 6 and 7, a reinforcing rib 16 shorter than the length between both ends 4 c of the body 4 is provided on the inner surface 4 a of the body 4 in the circumferential direction C.
The reinforcing ribs 16 absorb the load applied to the body portion 4 to prevent the body portion 4 from cracking. A ring-shaped hollow pipe 17 is provided at the center of the inner surface 4a of the body portion 4 so as to cross the reinforcing ribs 16, and the hollow ribs 17 increase the strength of the reinforcing ribs 16 themselves. Here, bolt positioning holes 18 are formed at both ends 4c in the axial direction D of the body portion 4 at positions corresponding to the bolt holes 12 of the flange portion 5 of the drum body 2 described later. Each bolt positioning hole 18 is located between the reinforcing ribs 16, 16, so that the reinforcing ribs 16 are provided on the inner surface 4 a side of the body 4.
Between them, a bolt insertion passage leading to the bolt positioning hole 18 is secured.

On the other hand, as shown in FIG. 4, a display section 9 for attaching a product name display card 8 is provided around a shaft hole 10 on the surface 5a of the flange section 5 of the drum body 2. The display portion 9 is formed such that the surface 8a of the card 8 is lower than the other surface 5a of the collar portion 5 in a state where the card 8 for displaying the product name is attached, and the printing surface of the card 8 is It has a structure that is hard to disappear. The surface 5a of the flange 5
A large number of reinforcing ribs 11 protrude from portions other than the display portion 9 in order to prevent the brim portion 5 from cracking by absorbing the load applied to the brim portion 5 with each reinforcing rib 11.

A plurality of (four in the present embodiment) bolts 6 penetrating through the bolts 6 for fixing the body 4 and the flanges 5 are provided on the outer peripheral side of the display portion 9 in the flanges 5. Hole 1
2 are perforated at intervals in the circumferential direction C. further,
A concave groove 13 having an L-shaped cross section into which the end 4c of the body 4 is inserted at a position closer to the outside A in the radial direction than the bolt hole 12 is formed in the back surface 5b of the both flanges 5. The concave groove 13 is formed along the end 4 c of the body 4 over the entire circumference of the flange 5 in the circumferential direction C. In this embodiment, the groove portion 14 of the groove 13 which is away from the bolt hole 12 is formed in a U-shape in cross section as shown in FIG. 9, and the trunk portion extends from the groove 13 to the groove portion 14. The body 4 and the two flanges 5 are positioned with respect to each other by inserting the end 4c of the body 4. Further, a concave groove 90 into which the end 16a of the reinforcing rib 16 of the body portion 4 is inserted is provided at a position near the radially inner side B of the concave groove portion 14, and the reinforcing rib 16 is also provided with both flanges. It is positioned with respect to the part 5.

As shown in FIGS. 1 to 5, an arc-shaped elongated hole 19 and an electric wire fixing hole 80 are formed in one of the two flange portions 5 of the drum body 2 as shown in FIGS. I have. Slot 1
9 is formed at a position closer to the outside A in the radial direction than the end 4 c of the body 4, and a winding start rope or the like (not shown) connected to the base end of the electric wire through the elongated hole 19 is provided. It is taken out of the drum body 2. The reinforcing rib on one end side of the long hole 19 in the direction H (FIG. 3) from which the winding start rope is taken out is used as a winding start rope fixing rib 27 for fixing the winding start rope, and the winding start rope is fixed. In order to prevent the rope from protruding from the surface 5a of the brim portion 5, the surface of the starting rope fixing rib 27 is formed lower than the surface of other general reinforcing ribs 11 by a predetermined dimension (for example, about 10 to 13 mm). Have been. In addition, on the back side of the reinforcing rib (portion indicated by F in FIG. 3) on the other end side of the long hole 19 in the direction I (FIG. 3) opposite to the direction in which the winding start rope is taken out, It is possible to perform a chamfering process (not shown) to prevent the surface from being scratched.

On the other hand, a plurality of the wire fixing holes 80 are provided at the outer peripheral end 5c of the collar portion 5, and are used to fix a string (not shown) connected to the distal end of the wire. Used for In this embodiment, a total of four pairs of two wire fixing holes 80 are provided at equal intervals in the circumferential direction C, and a plurality of spare The wire fixing hole 81 is provided. A portion where the wire fixing holes 80 and 81 are to be formed in the collar portion 5 is previously formed as the thin portion 21, and the thin portion 21 is cut at the time of use so that any one of the wire fixing holes 80 and 81 can be easily formed. The structure allows drilling.

Next, the cover member 3 attached to the drum body 2 will be described. The cover member 3 is attached to the gap G between the outer peripheral ends 5c of the two flange portions 5 of the drum body 2, and is made of a material having a self-retaining property, for example, resin, wood, or the like. As shown in FIGS. 11 and 12, the cover member 3 is formed in a cylindrical shape concentric with the drum body 2 and has a hollow part 25 partially formed. The cover member 3 is equally divided into four split plates 3a to 3d (FIG. 1) in the circumferential direction C, and the mounting of the split plates 3a to 3d and the two flange portions 5 is shown in FIG. Outer peripheral end 5c of both brim portions 5
(In this embodiment, 16) locking holes 20
And a plurality of (four in this embodiment) projections 22 and split pins 23 provided at both ends of the split plates 3a to 3d in the axial direction D.
This is performed using

That is, the locking holes 20 of the two flanges 5 are formed on the outer peripheral end 5c of the two flanges 5 in accordance with the numbers and positions of the projections 22 and the split pins 23 of the split plates 3a to 3d. The protrusion 22 of each of the split plates 3a to 3d is
Has a size and a shape that can be inserted into the locking hole 20.
Also, the split pins 23 of the split plates 3a to 3d are
During insertion of the pin halves 23a and 23b from the inside of the mounting hole 26 formed at the other end of the base member 3d into the locking hole 20 of the other flange 5, the pin halves 23a and 23b are pressed in a direction approaching each other and locked. The pin halves 23a and 23b are elastically returned to the expanded state and locked in the locking holes 20 after the insertion into the holes 20 and after the insertion into the locking holes 20 is completed. These splitting boards 3
As shown in FIG. 13, the outer surfaces 3 e of the split plates 3 a to 3 d are substantially flush with the outer peripheral end 5 c of the collar portion 5 in a state where they are attached to the outer peripheral ends 5 c of the two flange portions 5, as shown in FIG. As shown in FIGS. 4 and 5, the cross-sectional shape of the outer peripheral end 5c of each of the brim portions 5 is formed in a substantially mountain shape in which the center 40 side is high and both sides are low. Even when a load is applied to the portion 5, the structure is such that the drum body 2 can easily turn.

Next, the operation will be described. First, the drum 2
When assembling, as shown in FIG.
The long bolt 6 is passed from the bolt hole 12 of one of the flange portions 5 to the bolt hole 12 of the other of the flange portions 5 along the inner surface 4a side of the body portion 4 with the and the two flange portions 55 positioned with respect to each other. Then, the nut 7 is screwed into the screw portion projecting to the outside of the other flange portion 5 and tightened, whereby the body portion 4 and the two flange portions 5 are integrated, and the drum body 2 is assembled. At this time, a bolt positioning hole 18 (FIG. 6) is provided at a position corresponding to the bolt hole 12 in the body portion 4. Easily through the bolt hole 12 of the first embodiment, and the assembly becomes easier.

Next, when winding the electric wire around the drum body 2, for example, a winding start rope (not shown) is connected to the base end of the electric wire winding start side, and this winding start rope is connected to the drum body 2.
Is taken out of the drum body 2 through an elongated hole 19 formed in one of the flange portions 5 from the inside, and the winding start rope is fixed to a winding start rope fixing rib 27 (FIG. 3) located near the elongated hole 19. This prevents winding and slippage of the electric wire.
Also, at this time, the winding start rope fixing rib 27 is formed lower than the other reinforcing ribs 11, so that the winding start rope does not protrude from the surface 5a of the collar portion 5, and the winding start rope can be fitted and fixed well. After the winding of the electric wire is completed, an insulating tape or a cap (not shown) is attached to the end of the electric wire, and a string or the like is tied thereto. On the other hand, of the thin portions 21 (FIG. 3) provided at a plurality of locations on the outer peripheral end 5 c of the collar portion 5, only the thin portion 21 located near the string is cut and the wire fixing hole 80 (or 8
By drilling 1) and tying the string to the outer peripheral end 5c of the collar portion 5 using the wire fixing hole 80, the wire can be stored in the drum body 2 in a wound state.

Next, when attaching the split plates 3a to 3d (cover material 3) to the drum body 2 on which the electric wire is wound,
As shown in FIG. 13, a projection 22 protruding from one end of the split plate 3 a in the axial direction D is inserted into the locking hole 20 of one of the flange portions 5, and thereafter, the axial direction of the split plates 3 a to 3 d is changed. The split pin 23 protruding from the other end of D is engaged with the locking hole 20 of the other flange 5.
And the latching is performed, and the split plate 3a can be attached to the gap G between the outer peripheral ends 5c of the two flange portions 5 with one touch. The other split plates 3b to 3d are mounted in the same manner. Thereby, the electric wire wound drum 1 with the cover member 3 shown in FIG. 2 is finally obtained. Further, by pulling out the split pins 23 and the projections 22 from the locking holes 20, respectively, the split plates 3a to 3d can be detached from the drum body 2 with one touch.

As described above, the cylindrical cover member 3 having a self-retaining property is divided into the plurality of split plates 3a to 3d in the circumferential direction C, and the split plates 3a to 3d are arranged in the axial direction D. Since both ends are detachably attached to the outer peripheral ends 5c of the flanges 5 and 5 of the drum body 2, respectively, the electric wire wound drum 1
Even if it is exposed outdoors, it is possible to prevent rain and snow from being applied to the electric wires by using the split plates 3a to 3d attached to the drum body 2 and to prevent rust from occurring, The electric wire can be reliably protected from damage to the electric wire due to intrusion or salt damage. In addition, the cover material 3 (the split plates 3a to
3d) itself has a self-retaining property, so that it is only necessary to attach both ends of the split plates 3a to 3d in the axial direction D to the outer peripheral ends 5c of the two flanges 5, 5 of the drum body 2, respectively. Drum body 2
There is no concern that the cover member 3 will come off, and the work of attaching the cover member 3 becomes easy. In addition, the protrusion 22 of the cover member 3 and the split pin 23
By attaching and removing the cover member 3 to and from the outer peripheral end 5c of the two flange portions 5 by utilizing the above, the speed of operation can be increased. In this embodiment, as shown in FIG. 13, the splitters 3 a to 3 d are
c, the outer surface 3e of each of the split plates 3a to 3d is substantially flush with the outer peripheral end 5c of the collar portion 5, so that the split plates 3a to 3d do not protrude outside the drum body 2. This has the advantage that the storability is improved.

Although the drum body 2 is assembled using the bolts 6 and the nuts 7 in the above-described embodiment, the drum body 2 may be assembled using a connecting member other than the bolts 6 and the nuts 7.

[0022]

As described above, the first aspect of the present invention provides
A pair of flanges are provided at both ends of the body to form a drum body, and a gap between the outer peripheral ends of the two flanges in the drum body is covered with a cylindrical cover material having self-retention. with the cover member is more divided in the circumferential direction, both the flange portion
A plurality of locking holes are provided at the outer peripheral end of the
At one end in the direction, a protrusion that can be inserted into the locking hole of one collar
The other brim portion is provided at the other end of the cover material in the axial direction.
The cotter pin that is detachably engaged with the locking hole of the
Cover, using the protrusions and split pins on the cover material.
Easy and one-touch installation and removal of materials by hand
In becomes so capable, therefore, prevented can be prevented from rusting of the wire due to rain or snow, breakage or wire according to invasion such as mice, and salt damage wire core and jacket of the degradation due to
To speed up the work of attaching cover materials
Can be.

[0023]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically illustrating an embodiment of the present invention.

FIG. 2 is a perspective view schematically showing an assembled state of the same.

FIG. 3 is a front view of a collar portion of the same.

FIG. 4 is a cross-sectional view of a collar portion of the same.

FIG. 5 is a partial cross-sectional view showing the vicinity of a long hole of the collar portion of the above.

FIG. 6 is a front view of the body part of the above.

FIG. 7 is a side view of the same body part with a part cut away.

FIG. 8 is a partial side cross-sectional view of the same trunk.

FIG. 9 is a cross-sectional view of a mounting portion of the trunk portion and the collar portion in the same.

FIG. 10 is an exploded cross-sectional view, partially omitted, showing a mounting state of the trunk portion and the collar portion of the same.

FIG. 11 is a front view of the above-described cleaving plate.

12 (a) is a side view of the above-described split plate, and FIG. 12 (b) is a cross-sectional view taken along line EE of FIG. 12 (a).

FIG. 13 is a partially omitted cross-sectional view showing an attached state of the above-described split plate and a collar portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire winding drum 2 Drum body 3 Cover material 4 Trunk part 5 Collar part 5c Outer end 20 Locking hole 22 Protrusion 23 Split pin C Circumferential direction D G direction

Claims (1)

(57) [Claims] A drum body is provided with a pair of flange portions provided at both ends of a body portion, and a gap between outer peripheral ends of both flange portions of the drum body is covered with a cylindrical cover material having self-retaining property. The cylindrical cover material is divided into a plurality of pieces in the circumferential direction, and a plurality of locking holes are respectively provided at the outer peripheral ends of both flange portions.
And a locking hole for one of the flanges at one end in the axial direction of the cover material.
A protrusion that can be inserted into the cover material protrudes from the other end of the cover material in the axial direction.
That is detachably engaged with the engaging hole of the other collar part
An electric wire winding drum characterized by comprising pins protruding .