Code reel

Abstract

To provide a cord reel that allows the movement operation or rotational operation of the rotation support part to attach and detach the revolving drum and that simplifies the removable structure of the revolving drum.SOLUTION: A cord reel 1 includes a revolving drum 2 and a drum support body 3. The revolving drum 2 includes: an outer peripheral cylindrical part 21 that an electrical cable 24 is wound on; a panel part 22 that is provided on the end of an axial direction L of the outer peripheral cylindrical part 21 and has a plug socket provided thereon; and a rotation receiver 23 that is provided on the inner peripheral side of the outer peripheral cylindrical part 21. The drum support body 3 includes: a rotation support part 4 that is inserted into the rotation receiver 23 and supports the rotation of the revolving drum 2; and a frame part 31 that the rotation support part 4 is attached to. The rotation support part 4 allows the movement operation between the engaged condition to prevent the rotation receiver 23 from falling off the rotation support part 4 and the engagement released condition to cause the rotation receiver 23 to fall off the rotation support part 4.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a cord reel.

Background Art

[0002] A cord reel is configured to wind an electric cable connected to a commercial power supply or the like around a rotating drum rotatably supported by a drum support. When using the cord reel, the electric cable is pulled out from the rotating drum, and a plug provided at the tip of the electric cable is inserted into an outlet of a commercial power supply or the like. Then, power is supplied from an outlet provided on the rotating drum to various electrical devices and the like.

[0003] In addition, in an electric winder, an electric motor or the like is used to enable the rotating drum to wind the electric cable. For example, in the drum-exchangeable electric wire winder of Patent Document 1, a structure is described in which a drum mounting portion capable of holding a drum is detachably attached to a base portion. And when the drum mounting portion is rotated with respect to the base portion, the drum held by the drum mounting portion can be exchanged.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a conventional general cord reel, the central axis of the drum support is inserted into the central hole of the rotating drum, and a lock nut, a plug, etc. are attached to the end of the central axis, so that the rotating drum does not come off the central axis. Also, a general cord reel has a structure in which the rotating drum is not separated from the drum support unless the power outlet mounting board as one panel part of the rotating drum and the side plate as the other panel part of the rotating drum are removed. Therefore, when repairing the cord reel, etc., it takes a lot of labor to disassemble it. Therefore, in order to realize the attachment and detachment of the rotating drum to the drum support with a simple structure, further improvement is required in the attachment and detachment structure of the rotating drum.

[0006] In the electric winder of Patent Document 1, when replacing the drum, it is necessary to operate the locking fitting to release the lock of the fixed shaft of the drum mounting part with respect to the support plate part of the base part, and to raise the drum mounting part arranged in the horizontal direction with respect to the base part in the vertical direction. The structure for raising this drum mounting part is not simple, and there is room for improvement in the structure of the electric winder of Patent Document 1.

[0007] The present invention has been made in view of such problems, and aims to provide a cord reel that can attach and detach a rotating drum by moving or rotating a rotation support part, and can simplify the attachment and detachment structure of the rotating drum.

Means for Solving the Problems

[0008] One aspect of the present invention is a rotating drum having an outer peripheral cylindrical part around which an electric cable is wound, a panel part arranged at an end in the axial direction of the outer peripheral cylindrical part and provided with a power outlet, and a rotation receiving part provided on the inner peripheral side of the outer peripheral cylindrical part; a drum support having a rotation support part inserted into the rotation receiving part to support the rotation of the rotating drum, and a frame part to which the rotation support part is attached. The rotation support part can be moved between an engaged state in which the rotation receiving part does not come off from the rotation support part and a disengaged state in which the rotation receiving part comes off from the rotation support part. and is possible and the rotary support portion has a cylindrical portion and an operation shaft portion concentrically inserted into the cylindrical portion, the operation shaft portion is movable in the axial direction to an engagement position forming the engaged state of the rotary support portion and a disengagement position forming the disengaged state of the rotary support portion, one or more through holes penetrating the inner peripheral surface and the outer peripheral surface of the cylindrical portion are formed in the cylindrical portion, a plurality of balls are arranged in the through holes so as to face the outer peripheral surface of the operation shaft portion, when the operation shaft portion is in the engagement position, a part of the balls protrudes outward from the outer peripheral surface of the cylindrical portion through the through holes, and the rotation receiving portion is locked by a part of the balls. On the other hand, when the operation shaft portion is moved to the disengagement position, the balls retract from the outer peripheral surface of the cylindrical portion to the inner peripheral side, and the locking of the rotation receiving portion by a part of the balls is released. is in the cord reel.

Advantages of the Invention

[0009] In the cord reel of the above aspect, the structure of the rotation support part of the drum support body that supports the rotation drum is devised. Specifically, the rotation support part of the drum support body can be moved. and is possible. When the rotation support part is in the engaged state, the rotation receiving part of the rotation drum does not come off from the rotation support part. Thus, when winding the electric cable around the rotation drum or pulling out the electric cable from the rotation drum, the rotation drum supported by the rotation support part can be stably rotated.

[0010] On the other hand, when the rotation support part is moved and it is possible to remove the rotation receiving part of the rotation drum from the rotation support part. Thus, when replacing or maintaining the rotation drum, the rotation drum can be easily removed from the rotation support part. Also, it is easy to attach the rotation drum to the rotation support part again.

[0011] Therefore, according to the cord reel of the above aspect, by moving the rotation support part to it is possible to enable the attachment and detachment of the rotation drum, and the attachment and detachment structure of the rotation drum can be simplified.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0013] A preferred embodiment of the above-described cord reel will be described with reference to the drawings. <Embodiment> As shown in FIGS. 1 to 4, the cord reel 1 of this embodiment includes a rotating drum 2 and a drum support 3. The rotating drum 2 has an outer peripheral cylindrical portion 21 around which an electric cable 24 is wound, a panel portion 22 disposed at an end of the outer peripheral cylindrical portion 21 in the axial direction L and provided with an outlet 221, and a rotation receiving portion 23 provided on the inner peripheral side of the outer peripheral cylindrical portion 21. The drum support 3 has a rotation support portion 4 inserted into the rotation receiving portion 23 to support the rotation of the rotating drum 2, and a frame portion 31 to which the rotation support portion 4 is attached. The direction along the central axis of the rotation support portion 4 and the rotating drum 2 is referred to as the axial direction L. As shown in FIG. 5, the rotation support portion 4 can be moved between an engaged state A in which the rotation receiving portion 23 does not come off the rotation support portion 4 and a disengaged state B in which the rotation receiving portion 23 comes off the rotation support portion 4 as shown in FIG. 6.

[0014] The cord reel 1 of this embodiment will be described in detail below. The cord reel 1 is used to connect a power source such as a commercial power supply or a generator to various electrical devices that consume electric power from the power source. The cord reel 1 may be either for outdoor use or indoor use. The electric cable 24 and the plug provided at the tip of the electric cable 24 may have waterproofness that enables use outdoors.

[0015] (Drum support 3) As shown in FIGS. 1 and 2, the frame portion 31 is formed by bending a metal pipe material. The frame portion 31 is formed with an outer shape larger than the outer shape of the rotating drum 2. The frame portion 31 of the present embodiment is formed in a rectangular frame shape capable of stacking a plurality of cord reels 1 in multiple stages. The frame portion 31 may be formed in various shapes capable of supporting the rotation of the rotating drum 2.

[0016] As shown in FIGS. 2 to 4, the frame portion 31 is provided with an attached member 32 for attaching the rotation support portion 4. The attached member 32 is bridged between the pipe materials constituting the frame portion 31. The rotation support portion 4 is attached to the attached member 32 in a cantilever state. An attachment plate 42 for attaching the rotation support portion 4 to the attached member 32 with a plurality of screws is provided at an end portion on the proximal end side L1 in the axial direction L of the cylindrical portion 41 of the rotation support portion 4. The rotation support portion 4 is detachable from the attached member 32 of the drum support 3 by tightening and loosening a plurality of screws. In FIG. 3, the periphery of the rotation support portion 4 and the periphery of the handle 223 described later are appropriately extracted and shown in cross section.

[0017] (Rotation support portion 4) As shown in FIGS. 3, 5, and 6, the rotation support portion 4 has a structure for facilitating the attachment and detachment of the rotating drum 2. The rotation support portion 4 has a cylindrical portion 41 and an operation shaft portion 43 that is concentrically inserted into the cylindrical portion 41 and is movable in the axial direction L of the cylindrical portion 41. The operation shaft portion 43 is movable to an engagement position 401 that forms an engaged state A of the rotation support portion 4 and an engagement release position 402 that forms an engagement release state B of the rotation support portion 4. A plurality of through holes 413 penetrating the inner peripheral surface 411 and the outer peripheral surface 412 of the cylindrical portion 41 are formed in the cylindrical portion 41. The plurality of through holes 413 are formed in a state of being arranged in the circumferential direction C at the same position in the axial direction L of the cylindrical portion 41. The through holes 413 of the present embodiment are formed in a circular shape at two locations in the circumferential direction C of the cylindrical portion 41.

[0018] As shown in Fig. 5, balls 44 are respectively arranged in a state of facing the outer peripheral surface of the operation shaft portion 43 in a plurality of through holes 413. The diameter of the through hole 413 is smaller than the diameter of the ball 44. The ball 44 is arranged to face the outer peripheral surface of the operation shaft portion 43 at the formation position of the through hole 413 of the cylindrical portion 41. A part of the ball 44 can project from the through hole 413 to the outer peripheral surface 412 of the cylindrical portion 41.

[0019] As shown in Figs. 3 to 5, an opening 414 that opens outwardly of the frame portion 31 is formed at the end portion on the proximal end side L1 in the axial direction L of the cylindrical portion 41. In a state where the rotary support portion 4 is attached to the member to be attached 32, the opening 414 of the cylindrical portion 41 opens outwardly from the surface of the member to be attached 32. As shown in Fig. 6, the operation shaft portion 43 can be pushed in the axial direction L by an operation member S inserted into the cylindrical portion 41 through the opening 414. The operation member S is not particularly limited as long as it is operated by an operator, and may be, for example, a tool such as a driver or a push rod. In Fig. 6, a state is shown in which the operation shaft portion 43 is at the engagement release position 402 and the rotary drum 2 is withdrawn from the rotary support portion 4.

[0020] As shown in Figs. 5 and 6, at the end portion on the distal end side L2 in the axial direction L of the operation shaft portion 43, there are provided a small diameter portion 431, a large diameter portion 433 formed on the distal end side L2 in the axial direction L from the small diameter portion 431 and having an outer diameter larger than that of the small diameter portion 431, and a tapered portion 432 formed between the small diameter portion 431 and the large diameter portion 433. A general portion 434 as an intermediate portion in the axial direction L of the operation shaft portion 43 is formed to have the smallest outer diameter in the operation shaft portion 43. The outer diameter of the small diameter portion 431 is larger than the outer diameter of the general portion 434. At the end portion on the proximal end side L1 in the axial direction L of the operation shaft portion 43, a disk portion 435 that can be pushed in by the operation member S through the opening 414 is provided.

[0021] The outer diameter of the ball 44 is larger than the dimension corresponding to the radius between the outer peripheral surface of the small-diameter portion 431 and the inner peripheral surface 411 of the cylindrical portion 41, and smaller than the dimension corresponding to the radius between the outer peripheral surface of the small-diameter portion 431 and the outer peripheral surface 412 of the cylindrical portion 41. Also, the diameter of the through-hole 413 is smaller than the diameter of the ball 44. With these configurations, when the operation shaft portion 43 is moved axially in the direction L between the engagement position 401 and the disengaged position 402, the ball 44 can be prevented from coming off from the through-hole 413. Note that the outer diameter of the ball 44 in this embodiment is substantially the same as the dimension corresponding to the radius between the outer peripheral surface of the small-diameter portion 431 and the outer peripheral surface 412 of the cylindrical portion 41.

[0022] A stopper portion 415 is provided inside the cylindrical portion 41. An insertion hole 416 through which the general portion 434 of the operation shaft portion 43 is inserted is formed at the center of the stopper portion 415. A spring 45 is disposed between the end portion on the proximal end side L1 in the axial direction L of the stopper portion 415 and the disk portion 435 of the operation shaft portion 43. The spring 45 is constituted by a compression coil spring. As shown in FIG. 5, when the operation shaft portion 43 is at the engagement position 401, the end surface on the proximal end side L1 in the axial direction L of the small-diameter portion 431 of the operation shaft portion 43 is hooked to the end surface on the distal end side L2 in the axial direction L of the stopper portion 415 under the biasing force of the spring 45.

[0023] As shown in FIG. 5, when the operation shaft portion 43 is at the engagement position 401, a part of the ball 44 projects to the outer peripheral side from the outer peripheral surface 412 of the cylindrical portion 41 through the through-hole 413, and thus the rotation receiving portion 23 is locked in the axial direction L by a part of the ball 44. Thereby, the rotation receiving portion 23 of the rotary drum 2 is prevented from being pulled out from the rotation support portion 4. Normally, the operation shaft portion 43 is at the engagement position 401.

[0024] Also, when the operation shaft portion 43 is in the engagement position 401, the operation shaft portion 43 is biased to the engagement position 401 by the spring 45, and a part of the ball 44 protrudes outward from the outer peripheral surface 412 of the cylindrical portion 41 through the through hole 413 by being pushed by the large-diameter portion 433 of the operation shaft portion 43. At this time, the ball 44 is in contact with the outer peripheral surface of the large-diameter portion 433 and is maintained in a state of being disposed in the through hole 413.

[0025] On the other hand, as shown in FIG. 6, when the operation shaft portion 43 is moved to the disengagement position 402, the ball 44 retracts from the outer peripheral surface 412 of the cylindrical portion 41 to the inner peripheral side, thereby releasing the locking of the rotation receiving portion 23 by a part of the ball 44. Thereby, it becomes possible to extract the rotation receiving portion 23 of the rotary drum 2 from the rotation support portion 4. When replacing or maintaining the rotary drum 2, the operation shaft portion 43 is moved to the disengagement position 402.

[0026] Also, when the operation shaft portion 43 is moved to the disengagement position 402, the ball 44 moves to a position facing the small-diameter portion 431 via a position facing the tapered portion 432 and moves to the inner peripheral side of the outer peripheral surface 412 of the rotation receiving portion 23. At this time, the ball 44 is in contact with the outer peripheral surface of the small-diameter portion 431 and is maintained in a state of being disposed on the inner peripheral side of the through hole 413.

[0027] (Rotary drum 2) As shown in FIGS. 1 to 3, the rotary drum 2 has panel portions 22 at both ends in the axial direction L of the outer peripheral cylindrical portion 21, and has a rotation receiving portion 23 on the inner peripheral side of the outer peripheral cylindrical portion 21. The panel portion 22 is formed in a disk shape protruding to the outer peripheral side of the outer peripheral cylindrical portion 21. The electric cable 24 is wound around the outer periphery of the outer peripheral cylindrical portion 21 between the pair of panel portions 22.

[0028] As shown in FIGS. 1 and 2, on the outer surface of the front panel portion 22, there are arranged an outlet 221 for inserting the plugs of the electric cables of various electric devices, a cover 222 for opening and closing the outlet 221, a handle 223 for rotating the rotary drum 2, and the like. On the outer surface of the rear panel portion 22, there is arranged a breaker 224 for limiting the current, and the like.

[0029] As shown in FIGS. 3, 5, and 6, the rotary drum 2 is extractable with respect to the rotary support portion 4 on the tip side L2 in the axial direction L. The outer peripheral cylindrical portion 21, the panel portion 22, the rotation receiving portion 23, and the like of the rotary drum 2 are made of resin. On the other hand, the drum support 3 including the rotary support portion 4 having a cylindrical portion 41, a mounting plate 42, an operation shaft portion 43, a ball 44, and the like is made of metal. At the end of the rotation receiving portion 23 of the rotary drum 2 on the tip side L2 in the axial direction L, there are arranged a washer 231 made of metal and a pressing member 232 for pressing the washer 231 into the end of the rotation receiving portion 23 on the tip side L2 in the axial direction L. And the washer 231 contacts the ball 44 made of metal so as to reduce the wear of the rotation receiving portion 23.

[0030] (Function and Effect) In the cord reel 1 of this embodiment, the structure of the rotary support portion 4 of the drum support 3 that supports the rotary drum 2 is devised. Specifically, the rotary support portion 4 of the drum support 3 has a cylindrical portion 41 and an operation shaft portion 43 that can be moved and operated within the cylindrical portion 41. And when the operation shaft portion 43 is in the engagement position 401, the rotation receiving portion 23 of the rotary drum 2 does not come off from the rotary support portion 4. Thereby, when winding the electric cable 24 around the rotary drum 2 or pulling out the electric cable 24 from the rotary drum 2, the rotary drum 2 supported by the rotary support portion 4 can be stably rotated.

[0031] On the other hand, when the operating shaft portion 43 is moved with respect to the cylindrical portion 41 and the operating shaft portion 43 reaches the disengaged position 402, the rotation receiving portion 23 of the rotary drum 2 can be disengaged from the rotation support portion 4. Thereby, when replacing, maintaining, etc. the rotary drum 2, the rotary drum 2 can be easily removed from the rotation support portion 4. Also, it is easy to attach the rotary drum 2 to the rotation support portion 4 again.

[0032] Therefore, according to the cord reel 1 of this embodiment, by moving the operating shaft portion 43, it is possible to enable attachment and detachment of the rotary drum 2, and the attachment and detachment structure of the rotary drum 2 can be simplified.

[0033] Also, due to the configuration of the rotation support portion 4 using the cylindrical portion 41, the operating shaft portion 43, the ball 44, the spring 45, etc., the strength of the structure that supports the rotation of the rotary drum 2 is high, and the durability of the cord reel 1 is excellent. Also, with this configuration, a structure that enables the rotary drum 2 to be attached and detached to and from the rotation support portion 4 of the drum support 3 can be appropriately realized.

[0034] (Other configurations of the rotation support portion 4) Also, the rotation support portion 4 may be configured to be switchable between an engaged state A and a disengaged state B by a pivoting operation around its central axis. And when the rotation support portion 4 is in the engaged state A, the rotation receiving portion 23 may be prevented from disengaging from the rotation support portion 4, and when the rotation support portion 4 is in the disengaged state B, the rotation receiving portion 23 may be disengaged from the rotation support portion 4.

[0035] In this case, a latching portion that can be latched to the end portion on the tip side L2 in the axial direction L of the rotation receiving portion 23 of the rotary drum 2 is provided at the end portion on the tip side L2 in the axial direction L of the rotation support portion 4, and an operation portion for rotating the rotation support portion 4 is provided at the end portion on the base end side L1 in the axial direction L of the rotation support portion 4. Then, when the rotation support portion 4 is in the engaged state A, the latching portion is latched to the tip end portion in the axial direction L of the rotation receiving portion 23, and when the rotation support portion 4 is in the disengaged state B, the latching of the tip end portion in the axial direction L of the rotation receiving portion 23 by the latching portion is released. Also in this case, the same operational effects as those obtained when the rotation support portion 4 is made movable by a moving operation can be obtained.

[0036] The present invention is not limited only to the embodiments, and it is possible to configure further different embodiments without departing from the gist thereof. Further, the present invention includes various modification examples, modification examples within an equivalent range, and the like.

Explanation of Signs

[0037] 1 Cable reel 2 Rotary drum 21 Outer peripheral cylindrical portion 22 Panel portion 23 Rotation receiving portion 24 Electric cable 3 Drum support 31 Frame portion 32 Member to be attached 4 Rotation support portion 401 Engagement position 402 Disengagement position 41 Cylindrical portion 413 Through hole 414 Opening 42 Mounting plate 43 Operation shaft portion 431 Small diameter portion 432 Taper portion 433 Large diameter portion 44 Ball 45 Spring

Claims

1. A rotating drum having an outer peripheral cylindrical portion around which an electric cable is wound, a panel portion disposed at an end portion in the axial direction of the outer peripheral cylindrical portion and provided with an outlet, and a rotation receiving portion provided on the inner peripheral side of the outer peripheral cylindrical portion; A drum support having a rotation support portion inserted into the rotation receiving portion to support the rotation of the rotating drum and a frame portion to which the rotation support portion is attached; The rotation support portion is movable between an engaged state in which the rotation receiving portion is prevented from coming off the rotation support portion and a disengaged state in which the rotation receiving portion is allowed to come off the rotation support portion; The rotation support portion has a cylindrical portion and an operation shaft portion inserted concentrically into the cylindrical portion; The operation shaft portion is movable in the axial direction between an engagement position forming the engaged state of the rotation support portion and a disengagement position forming the disengaged state of the rotation support portion; One or a plurality of through holes penetrating the inner peripheral surface and the outer peripheral surface of the cylindrical portion are formed in the cylindrical portion; A plurality of balls are arranged in the through holes in a state facing the outer peripheral surface of the operation shaft portion; When the operation shaft portion is in the engagement position, a part of the balls protrudes outward from the outer peripheral surface of the cylindrical portion through the through holes, and the rotation receiving portion is locked by a part of the balls. On the other hand, when the operation shaft portion is moved to the disengagement position, the balls retract from the outer peripheral surface of the cylindrical portion to the inner peripheral side, and the locking of the rotation receiving portion by a part of the balls is released. A cord reel configured as such.

2. An opening portion that opens outwardly of the frame portion is formed at a base end portion in the axial direction of the cylindrical portion; A stopper portion is provided in the cylindrical portion; At the tip end portion in the axial direction of the operation shaft portion, a small diameter portion, a large diameter portion formed on the tip end side in the axial direction with respect to the small diameter portion and having an outer diameter larger than that of the small diameter portion, and a taper portion formed between the small diameter portion and the large diameter portion are provided; A disk portion that can be pushed in through the opening portion is provided at the base end portion in the axial direction of the operation shaft portion; A spring is disposed between the stopper portion and the disk portion; When the operating shaft portion is in the engaged position, the operating shaft portion is biased to the engaged position by the spring, and the ball is pushed against the large-diameter portion, so that a part of the ball protrudes to the outer peripheral side from the outer peripheral surface of the cylindrical portion through the through hole. On the other hand, when the operating shaft portion is moved to the disengaged position, the ball moves to a position facing the small-diameter portion via a position facing the tapered portion, and is configured to move to the inner peripheral side of the outer peripheral surface of the rotation receiving portion. The cord reel according to claim 1.

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