JPH07223773A - Electric wire take-up reel - Google Patents

Abstract

PURPOSE:To enable attachment and detachment of a cover member to a drum body to be easily performed as well as to prevent generation of rust on an electric wire caused by rain or snow by a simple structure, and to reliably protect the electric wire from rat damage or salt damage. CONSTITUTION:A gap G between outer peripheral ends 5c of both collar parts 5, 5 in a drum body 2 is covered with a cylindrical cover member 3 having self shape retaining property. The cover member 3 is divided into a plurality of small divided plates 3a to 3d in the circumferential direction C. Both ends in the axial direction D of respective small divided plates 3a to 3d are respectively and attachably/detachably attached to the outer peripheral ends 5c of both collar parts 5, 5.

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 part around which an electric wire is wound, two collar parts of the same shape attached to both ends of the body part, and a screw for connecting the body part and the collar part are formed. A known electric wire winding drum is known (for example, Japanese Patent Laid-Open No. 5-254).
736).

[0003]

By the way, in the conventional wire winding drum, the electric wires are stored in a state of being exposed to the outside. Therefore, for example, when the electric wire winding drum is exposed outdoors, the electric wires are exposed to rain or snow. There is a problem that rust easily occurs. Also, if the entire wire winding drum is covered with a vinyl sheet, etc., it will take time and effort to install the vinyl sheet, and the vinyl sheet will flip over due to wind, etc., or a mouse etc. will enter the wire winding drum and grab the wire. There is also a problem that the core wire and the jacket of the electric wire are easily deteriorated due to salt damage in the coastal area and the like.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to prevent generation of rust due to rain or snow with a simple structure, and to prevent damage from a mouse or salt damage to an electric wire. Another object of the present invention is to provide an electric wire winding drum capable of easily attaching and detaching the cover material to and from the drum body. It is in.

[0005]

In order to solve the above-mentioned problems, the present invention has a pair of collar portions 5 and 5 at both ends 4c of a body portion 4.
Is provided to form the drum body 2, and the gap G between the outer peripheral ends 5c of both the flange portions 5 and 5 of the drum body 2 is covered with a tubular cover material 3 having a self-shape retaining property. The cover material 3 is divided into a plurality of portions in the circumferential direction C, and both end portions of the cover material 3 in the axial direction D are detachably attached to the outer peripheral ends 5c of the collar portions 5 and 5, respectively.

Further, a plurality of locking holes 20 are provided at the outer peripheral ends 5c of the two flange portions 5, 5, respectively, and one end portion in the axial direction D of the cover member 3 is provided with the locking hole 20 of one of the collar portions 5. An insertable projection 22 is provided in a protruding manner, and a split pin 23 is detachably engaged with the engaging hole 20 of the other flange portion 5 at the other end of the cover material 3 in the axial direction D. Is preferred.

[0007]

According to the present invention, however, the tubular cover material 3 having the self-shape retaining property is divided into a plurality of pieces in the circumferential direction C, and both ends of the cover material 3 in the axial direction D are formed on both sides of the drum body 2. Since the outer peripheral ends 5c of the parts 5 and 5 are detachably attached to each other, even when the electric wire winding drum 1 is exposed outdoors, the cover material 3 attached to the drum body 2 is used to connect the electric wires to the electric wires. It is possible to prevent rain and snow from being applied, prevent rust from occurring, and reliably protect electric wires from damage by rats and salt damage. Moreover, since the cover material 3 itself has a self-shape retaining property, the axial direction D of the cover material 3 is
No need to worry about coming off from the drum body 2 simply by attaching both end portions of the to the outer peripheral ends 5c of the two brim portions 5 and 5 of the drum body 2, respectively.
The cover material 3 can be easily attached.

Further, a plurality of locking holes 20 are provided at the outer peripheral ends 5c of the two flange portions 5, 5, respectively, and one end portion of the cover material 3 in the axial direction D is inserted into the locking hole 20 of one of the collar portions 5. In the case where a free protrusion 22 is provided to project and a split pin 23 to be detachably engaged with the engagement hole 20 of the other flange portion 5 is provided to the other end of the cover material 3 in the axial direction D, By using the projections 22 and the split pins 23 of the cover material 3, it is possible to more easily attach and detach the cover material 3 to and from the outer peripheral ends 5c of the collar portions 5.

[0009]

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

First, in the body portion 4 of the drum body 2, as shown in FIG. 8, the cross-sectional shape of the outer surface 4b is formed to be zero in order to facilitate winding of the electric wire, whereas the cross-sectional shape of the inner surface 4a is formed. Has a downward slope M from the center in the axial direction D toward both ends 4c, and water that has infiltrated from the shaft hole 100 of the body portion 4 or condensed water that has adhered to the inner surface 4a of the body portion 4 has a downward slope M. Along with the ends 4a of the body 4 and a large number of water drain holes 15 provided in the two flanges 5 of the drum 2 (FIG. 3).
The structure is such that the water is drained from the outside. As shown in FIGS. 6 and 7, a reinforcing rib 16 shorter than the length between both ends 4c of the body portion 4 is provided on the inner surface 4a of the body portion 4 in the circumferential direction C.
A large number of protrusions are provided with a space therebetween, and the reinforcing ribs 16 absorb the load applied to the body portion 4 to prevent the body portion 4 from cracking. Further, a ring-shaped hollow pipe 17 is provided in the center of the inner surface 4a of the body portion 4 so as to cross the reinforcing ribs 16, and the hollow pipes 17 increase the strength of the reinforcing ribs 16 themselves. Here, at both ends 4c of the body portion 4 in the axial direction D, bolt positioning holes 18 are drilled at positions corresponding to the bolt holes 12 of both flange portions 5 of the drum body 2, which will be described later. Each of the bolt positioning holes 18 is located between the reinforcing ribs 16 and 16, so that the reinforcing rib 16 is provided on the inner surface 4a side of the body portion 4.
A bolt insertion passage communicating with the bolt positioning hole 18 is secured between them.

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

Further, a plurality of bolts (four in the present embodiment) through which bolts 6 for fixing the body portion 4 and both the collar portions 5 pass through are provided on the outer peripheral side of the display portion 9 in the both collar portions 5. Hole 1
2 are perforated at intervals in the circumferential direction C. further,
A recessed groove 13 having an L-shaped cross section into which the end 4c of the body portion 4 is inserted is formed on the back surface 5b of each of the collar portions 5 at a position closer to the outer side A in the radial direction than the bolt hole 12. The concave groove 13 is provided along the end 4c of the body portion 4 along the entire circumference of the collar portion 5 in the circumferential direction C. In this embodiment, the recessed groove portion 14 of the recessed groove 13 which is separated from the bolt hole 12 is formed in a U-shaped cross section as shown in FIG. 9, and the trunk portion extends from the recessed groove 13 to the recessed groove portion 14. By inserting the end portion 4c of the body 4, the body portion 4 and the collar portions 5 are positioned relative to each other. Further, a groove 90 into which the end portion 16a of the reinforcing rib 16 of the body portion 4 is inserted is provided at a position radially inward of the groove portion 14 toward the inner side B, and the reinforcing rib 16 also has both ribs. It is positioned with respect to the portion 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 flange portions 5 of the drum body 2 as shown in FIGS. There is. Long hole 1
9 is formed at a position closer to the outer side A in the radial direction than the end portion 4c of the body portion 4, and a winding start rope or the like (not shown) connected to the base end portion of the electric wire through the elongated hole 19 is provided. It is taken out of the drum body 2. Further, the reinforcing rib on one end side of the elongated hole 19 in the direction H (FIG. 3) in which the winding start rope is taken out is used as the winding start rope fixing rib 27 for fixing the winding start rope, and In order to prevent the rope from protruding from the surface 5a of the brim portion 5, the surface of the winding start rope fixing rib 27 is formed lower than the surface of the other general reinforcing ribs 11 by a predetermined dimension (for example, about 10 to 13 mm). Has been done. It should be noted that, on the back surface of the reinforcing rib (the portion indicated by F in FIG. 3) on the other end of the elongated hole 19 in the direction I (FIG. 3) opposite to the direction in which the winding start rope is taken out, when the electric wire is started to be wound, It is possible to perform chamfering processing (not shown) to prevent scratches on the surface.

On the other hand, a plurality of the wire fixing holes 80 are provided on the outer peripheral end 5c of the collar portion 5 for fixing a string or the like (not shown) connected to the tip of the wire. Used for. In this embodiment, a set of two wire fixing holes 80 is provided at equal intervals in the circumferential direction C, and a total of four sets are provided, and a plurality of spare wires are provided inward in the radial direction B of each wire fixing hole 80. The wire fixing hole 81 is provided. The portion of the collar portion 5 where the wire fixing holes 80 and 81 are to be formed is the thin portion 21 in advance. By cutting the thin portion 21 during use, either of the wire fixing holes 80 and 81 can be easily formed. It has a structure that can be drilled.

Next, the cover member 3 attached to the drum body 2 will be described. The cover material 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 self-shape retention property, for example, resin or wood. As shown in FIGS. 11 and 12, the cover material 3 is formed into a cylindrical shape that is concentric with the drum body 2, and a hollow portion 25 is partially formed. This cover material 3 is equally divided into four split plates 3a to 3d (FIG. 1) in the circumferential direction C, and the attachment of these split plates 3a to 3d and both the collar portions 5 is shown in FIG. Outer peripheral edge 5c of both brim portions 5
Plural (16 in this embodiment) locking holes 20 provided in the
And a plurality of (four in this embodiment) protrusions 22 and split pins 23 provided at both ends of the split plates 3a to 3d in the axial direction D.
Is done using and.

That is, the locking holes 20 of the two collar portions 5 are formed at the outer peripheral ends 5c of the two collar portions 5, respectively, depending on the number and position of the projections 22 and the split pins 23 of the split split plates 3a to 3d. , The protrusion 22 of each split plate 3a to 3d is one of the collar portions 5
It has a size and shape that can be inserted into the locking hole 20 of FIG.
The split pins 23 of the split plates 3a to 3d are the split plates 3a.
During insertion from the inside of the mounting hole 26 formed in the other end of the through 3d into the locking hole 20 of the other flange portion 5, the pin halves 23a and 23b are pressed and locked in a direction in which they approach each other. The pin halves 23a and 23b are elastically returned to the expanded state and locked in the locking hole 20 after the insertion into the locking hole 20 is completed. These split boards 3
As shown in FIG. 13, a to 3d are such that the outer surfaces 3e of the split plates 3a to 3d are substantially flush with the outer peripheral edge 5c of the collar portion 5 when attached to the outer peripheral edges 5c of the two collar portions 5. In addition, as shown in FIGS. 4 and 5, the cross-sectional shape of the outer peripheral end 5c of both 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 the load is applied to the portion 5, the drum body 2 is easily rotated.

Next, the operation will be described. First, the drum body 2
When assembling, as shown in FIG.
And the both collar portions 55 are positioned relative to each other, the long bolt 6 is penetrated from the bolt hole 12 of the one collar portion 5 to the bolt hole 12 of the other collar portion 5 along the inner surface 4a side of the body portion 4. Then, the nut 7 is screwed and fastened to the screw portion projecting to the outside of the other flange portion 5, whereby the body portion 4 and both the collar portions 5 are integrated to assemble the drum body 2. At this time, since the bolt positioning hole 18 (FIG. 6) is provided in the body portion 4 at a position corresponding to the bolt hole 12, the long bolt 6 can be used to secure the long bolt 6 to the both flange portions 5. It becomes easier to penetrate the bolt holes 12 of the above, and the assembling 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 portion of the winding start side of the electric wire, and the winding start rope is connected to the drum body 2.
It is taken out from the inner side of the drum body 2 through the long hole 19 formed in the one collar portion 5, and the winding start rope is fixed to the winding start rope fixing rib 27 (FIG. 3) located in the vicinity of the long hole 19. This prevents winding slippage of the electric wire.
At this time, since the winding start rope fixing rib 27 is formed lower than the other reinforcing ribs 11, the winding start rope does not project from the surface 5a of the collar portion 5, and the winding start rope can be fixed well. After winding the electric wire, an insulating tape or cap (not shown) is attached to the tip of the electric wire, and a string or the like is tied to the insulating tape or cap. On the other hand, among the thin-walled portions 21 (FIG. 3) provided at a plurality of locations on the outer peripheral end 5c of the collar portion 5, only the thin-walled portions 21 located near the string are cut to cut the wire fixing holes 80 (or 8
By perforating 1) and tying a string to the outer peripheral end 5c of the brim portion 5 using the electric wire fixing hole 80, the electric 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 protrusion 22 projecting from one end of the split plate 3a in the axial direction D is inserted into the locking hole 20 of one of the collar portions 5, and then the split plates 3a to 3d are axially formed. The split pin 23 protruding from the other end portion of D is used as the locking hole 20 of the other flange portion 5.
By inserting it into and locking the split plate 3a, the split plate 3a can be attached to the gap G between the outer peripheral ends 5c of the two collar portions 5 with one touch. The other split plates 3b to 3d are attached in the same manner. As a result, the electric wire winding drum 1 with the cover material 3 shown in FIG. 2 is finally obtained. Further, by pulling out the split pin 23 and the projection 22 from the locking hole 20, the split plates 3a to 3d can be removed from the drum body 2 with one touch.

In this way, the tubular cover material 3 having self-shape retention is divided into a 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 end portions are detachably attached to the outer peripheral ends 5c of the two brim portions 5, 5 of the drum body 2, the wire winding drum 1
Even when the outdoor unit 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 in advance. The wire can be reliably protected from damage to the wire or salt damage due to intrusion. Moreover, the cover material 3 (slit plate 3a-
3d) itself has a self-shape-retaining property. Therefore, it suffices to attach both ends of the split plates 3a to 3d in the axial direction D to the outer peripheral ends 5c of the flanges 5 and 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 material 3 becomes easy. Moreover, the projection 22 and the split pin 23 of the cover material 3
By using and to attach and detach the cover material 3 to and from the outer peripheral ends 5c of the two brim portions 5, the work speed can be increased. Further, in the present embodiment, as shown in FIG. 13, the split plates 3a to 3d are provided on the outer peripheral end 5 of the two brim portions 5.
Since the outer surface 3e of each split plate 3a to 3d is substantially flush with the outer peripheral end 5c of the collar portion 5 when attached to c, each split plate 3a to 3d does not project to the outside of the drum body 2. There is an advantage that the storability becomes good.

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

[0022]

As described above, the invention according to claim 1 is
A drum body is formed by providing a pair of flange portions at both ends of the body portion, and a gap between outer peripheral ends of the flange portions of the drum body is covered with a tubular cover material having self-shape retention. The cover material is divided into a plurality of parts in the circumferential direction, and both ends of the cover material in the axial direction are detachably attached to the outer peripheral ends of the collar parts, respectively. However, the cover material attached to the drum can be used to prevent rusting of the wire due to rain or snow, damage to the wire due to intrusion of mice, etc., and deterioration of the core wire and outer jacket of the wire due to salt damage. Can be reliably prevented by the cover material.
Also, because the cover material has self-shape retention, there is no concern that it will come off from the drum body by simply attaching both ends of the cover material in the axial direction to the outer peripheral edges of both flange parts of the drum body. Can be done easily.

According to a second aspect of the present invention, a plurality of locking holes are provided at the outer peripheral ends of the two flanges, respectively, and the one axial end of the cover member can be inserted into the locking hole of one of the flanges. Since the projection is provided with projections, and the split pin that is detachably engaged with the locking hole of the other flange is provided at the other end of the cover material in the axial direction, the projection of the cover material and the split pin The cover material can be attached and detached more easily by using, and the work speed can be increased.

[Brief description of drawings]

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

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

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

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

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

FIG. 6 is a front view of the body section of the same.

FIG. 7 is a side view in which the body portion of the above embodiment is partially broken.

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 body portion and the collar portion of the above.

FIG. 10 is an exploded cross-sectional view, partly omitted, showing a state in which the body portion and the collar portion of the above are attached.

FIG. 11 is a front view of the above split plate.

12A is a side view of the split plate of the same, and FIG. 12B is a sectional view taken along line EE of FIG.

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

[Explanation of symbols]

 1 Wire winding drum 2 Drum body 3 Cover material 4 Body part 5 Collar part 5c Outer peripheral edge 20 Locking hole 22 Protrusion 23 Split pin C Circumferential direction D Axial direction G Gap

Claims (2)

[Claims] 1. A drum body is constructed by providing a pair of collar portions at both ends of a body portion, and a gap between outer peripheral ends of both collar portions of the drum body is covered by a cylindrical cover material having self-shape retention. The tubular cover material is divided into a plurality of pieces in the circumferential direction, and both ends of the cover material in the axial direction are detachably attached to the outer peripheral ends of the flange portions, respectively. 2. A plurality of locking holes are provided at the outer peripheral ends of both flanges, respectively, and a projection insertable into the locking hole of one of the flanges is projectingly provided at one axial end of the cover member. 2. A split pin projectingly provided at the other axial end of the material so as to be disengageably locked in the locking hole of the other flange portion.
The electric wire winding drum described.