JPH0240058Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cable reel, and particularly to a cable reel that allows cables to be pulled out and wound up while being plugged into an outlet.

[Prior Art] FIGS. 8 and 9 are views showing a conventional cable reel, in particular, FIG. 8 is a perspective view, and FIG. 9 is a partially cutaway side view. Next, a conventional cable reel will be described with reference to FIGS. 8 and 9.

The cable reel 1 has side plates 3 on both sides of the winding drum 2.
and 4 are provided, and a cable 5 is wound around the winding drum 2. At one end of the cable 5,
A plug 6 is connected thereto, and the other end is connected to terminals 7a and 7b provided inside the winding drum 2. An outlet 8 is provided on the side plate 4,
Terminals 9a, 9b of outlet 8 and terminals 7a, 7b
and are electrically connected via relay lines 10a and 10b. The winding drum 2 is rotatably provided around the shaft 11, and is rotated in the direction of arrow A or the direction of arrow B by turning the handle 12. Thereby, the cable 5 can be wound around the winding drum 2 or pulled out from the winding drum 2. The shaft 11 is attached to and supported by support legs 13, and a stopper 14 is attached to the tip of the shaft 11 to prevent the side plates 3, 4 and the winding drum 2 from coming off the shaft 11.

When using the cable reel 1, pull out the cable 5 from the winding drum 2, insert the plug 6 provided at the tip of the cable 5 into the power outlet 15,
A plug 16 of an appliance (not shown) to be used, such as a power tool or a lighting lamp, is inserted into the outlet 8 for use. Therefore, the cable reel 1 is carried and used close to the place of use, such as a construction site.

[Problems to be solved by the invention] By the way, at construction sites, power tools, lighting lights, etc. are sometimes used while being moved. In such a case, the following inconvenience occurred when moving the cable reel 1. That is, if the cable reel 1 is moved with the plug 16 of the device inserted into the outlet 8, the winding drum 2 must be rotated in order to pull out the cable 5, and the winding drum 2
As the outlet 8 rotates,
The cord 17 of the instrument becomes twisted. Therefore, when moving the device, first disconnect the plug 16 of the device.
It was necessary to disconnect the plug 16 from the outlet 8 and then insert the plug 16 into the outlet 8 again after completing the move. Further, there was a problem in that the work had to be interrupted in order to temporarily remove the plug 8 of the instrument.

Therefore, the main object of this invention is to provide a cable reel that allows continuous operation without requiring removal of the plug of the equipment used when moving the cable reel.

[Means for solving the problem] This invention includes a supporting leg, a fixed shaft fixed to the supporting leg, and a cylindrical winding rotatably supported on the fixed shaft and around which a cable is wound. a first side plate attached to one side of the winding drum and rotatable about a fixed shaft; a first side plate having a circular opening in the center and attached to the other side of the winding drum; a second side plate including an annular member and a disc member provided in the opening of the annular member and whose center portion is fixed to a fixed shaft; and a second side plate having an outlet attached to the disc member; The stationary part includes a stationary part fixed to a fixed shaft and a rotating part that rotates around the fixed shaft together with the winding drum and the first side plate, and the stationary part is electrically connected to an outlet attached to the disc member. The rotating part is electrically connected to the tip of the cable, and the current collector part is provided with a second electrode that contacts the first electrode. .

[Function] The cable reel according to this invention is provided with a current collector part in which a rotating part that rotates around a fixed shaft together with the winding drum and a stationary part fixed to the fixed shaft are electrically connected, Since the outlet electrically connected to the stationary part is attached to the side plate fixed to the fixed shaft, the outlet will not rotate even if the winding drum is rotated to pull out or wind the cable. , the cord of electrical work etc. plugged into the outlet will not get twisted.

[Embodiment of the invention] FIG. 7 is a perspective view showing a cable reel according to an embodiment of the invention. In FIG. 7, the cable reel 21 includes a support leg 22 to which a shaft 23 is attached. The shaft 23 is a fixed shaft that does not rotate. One side plate 25 of the cylindrical winding drum 24 is attached to the shaft 23.
3, and the side plate 25 and the winding drum 24 are connected. The other side plate 26 of the winding drum 24 has a disc member 261 and a disc member 261.
and an annular member 262 provided on the outer periphery of the ring. The disc member 261 is fixedly attached to the shaft 23, and the disc member 261 has an outlet 2 connected thereto.
7 are installed. The annular member 262 is coupled to the winding drum 24 and can rotate together with the winding drum 24 around the outer periphery of the disc member 261 . Therefore, when the cable 28 is pulled out or wound up, the winding trunk 24, side plate 25 and annular member 26
2 rotate integrally in the direction of arrow A or the direction of arrow B, but the disc member 261 does not rotate and remains stationary. Therefore, if the cable 28 is pulled out while the plug 29 of a power tool or the like is inserted into the outlet 27, or the cable reel 21 is wound up,
can be moved.

FIG. 1 is a sectional view of one embodiment of the invention shown in FIG. 7. In FIG. 1, a guide portion 30 is provided on the inner periphery of the annular member 262.
is adapted to rotate while holding the outer peripheral portion of the disc member 261 between them. Further, a hole is provided in the center of the disc member 261, and a support member 44 having a flange 44a is fitted into this hole, and the shaft 23 is fitted into the support member 44. The disc member 261 is spot welded to the flange 44a, and the support member 44 is fixed to the shaft 23 with a set screw 45. in this way,
The disc member 261 is fixed to the shaft 23 via the support member 44. An annular electrode holder 32 of a current collector 31, which will be described later, is attached to the shaft 23, and is locked to the shaft 23 by a locking pin 33. Terminals 34a and 34b of the annular electrode holder 32 are connected to relay wires 35a and 35, respectively.
terminals 36a, 36b of the outlet 27 via b
It is connected to the. A brush holder 37 is provided in combination with the annular electrode holder 32 . Terminals 38a and 38b of the brush holder 37 are each connected to the tip of the cable 28.
An engagement pin 43 whose one end is fixed to a support plate 42 is inserted into the engagement portion 41 of the brush holder 37, and the support plate 42 is coupled to the side plate 25.
Therefore, the brush holder 37 can rotate together with the winding drum 24 and the side plate 25.

2 is a front view showing the configuration of the current collector 31 shown in FIG. 1, FIG. 3 is a sectional view taken along the - line in FIG. 2, and FIG. FIG. In Figures 2 and 3,
A fitting hole 50a is formed in the center of the brush holder 37, and annular grooves 51 and 52 are formed concentrically around the fitting hole 50a. The brush 53 is inserted into the fitting hole 50a in the annular groove 51.
Two brushes are provided on both sides with the brush 5 in between.
3 is attached to the brush holder 37 by a fastener 54. Further, in the annular groove 52 on the outside thereof, two brushes 55 are provided on both sides, sandwiching the fitting hole 50a.
The brush 55 is provided with a fastener 56.
It is attached to the brush holder 37 by.

The brushes 53 and 55 are both made of metal, and are shaped so that both ends thereof protrude into opposing electrodes. Since the two brushes 53 need to be electrically connected to each other, they are electrically connected by a metal piece 57 attached to the opposite side of the brush holder 37 from the brushes. Similarly, the two brushes 55 are also attached to the brush holder 3.
It is electrically connected by a metal piece 58 provided on the opposite side of 7. As shown in FIG. 1, terminals 38a and 38b connected to brushes 53 and 55, respectively, are taken out from the opposite side of the brush holder 37. It should be noted that engagement pins 43 are provided at both vertical and horizontal ends of the brush holder 37.
Holes 59a, 59b, 59c, and 59d are formed for engagement with.

At the center of the annular electrode holder 32, a current collector 3 is provided.
A cylindrical rotating shaft portion 60 serving as one rotating shaft is formed. As shown in FIG. 3, the rotating shaft portion 60 is formed with a groove 60a into which a C-shaped retaining ring is fitted. Annular grooves 61 and 62 are formed concentrically around the rotating shaft portion 60, respectively. An annular electrode 63 made of an annular metal disk is fitted into the inner groove 61, and an annular electrode 65 is fitted into the outer annular groove 62. As shown in FIG.
On the opposite side to the annular electrodes, annular electrodes 63 and 65 are provided.
Terminals 34a and 34b connected to are taken out.

As shown in FIG.
The rotating shaft portion 60 of the annular electrode holder 32 is fitted into the fitting hole 50a of the brush holder 37 so that the annular electrodes 63, 65 face each other. After the brush holder 37 and the annular electrode holder 32 are fitted, a C-shaped retaining ring 66 is fitted into the groove 60a of the rotating shaft portion 60, thereby assembling the brush holder 37 and the annular electrode holder 32 so that they will not come off.

In the current collector section 31 assembled in this way, the brush holder 37 and the annular electrode holder 32 are engaged with each other through the fitting hole 50a and the rotating shaft section 60, and are relatively assembled so that the device can be assembled. There is. In this state, the raised portions on both sides of the brush 53 are in contact with the annular electrode 63, and the raised portions on both sides of the brush 55 are also in contact with the annular electrode 65. When the brush holder 37 rotates relative to the annular electrode holder 32, the brush 5 moves over the annular electrodes 63 and 65.
The raised portions 3 and 55 slide while contacting each other. Therefore, the brush holder 37 is the same as the annular electrode holder 3.
Even while rotating relative to 2,
The brushes 53, 55 and the annular electrodes 63, 65 are electrically connected. Therefore, the brush holder 37
A current can be made conductive between the terminals 38a, 38b of the annular electrode holder 32 and the terminals 34a, 34b of the annular electrode holder 32.

Next, the operation of one embodiment of this invention will be explained. As the cable 28 wound around the winding drum 24 is pulled out, the winding trunk 24, side plate 25 and annular member 26 are removed.
2 rotates, and due to the rotational movement of the engagement pin 43 fixed to the support plate 42 coupled to the side plate 25, the brush holder 37, which is engaged with the engagement pin 43 at the engagement portion 41, rotates. do. On the other hand, the annular electrode holder 3
2 is locked to the shaft 23 by the engagement pin 33, so it does not rotate and remains stationary.
Therefore, only the brush holder 37 rotates, and the brushes 53, 5 attached to the brush holder 37 rotate.
The raised portion 5 rotates while contacting the surfaces of the annular electrodes 63 and 65. Even during this rotation, the raised portions of the brushes 53, 55 are connected to the annular electrodes 63, 65.
Since the brushes 53 and 55 are in elastic contact with
The annular electrodes 63 and 65 maintain good contact. With such good contact conditions,
The current supplied from the cable 28 is applied to the brush 5
3, 55 and annular electrodes 63, 65, and is supplied to the outlet 27 via the relay wires 35a, 35b.

Note that in the embodiments described above, the annular electrode and the brush are attached and supported in combination.
Further, the hole serving as the engagement portion 41 of the brush is considerably larger than the engagement pin 43 fixed to the support member 42, and is loosely engaged with the engagement pin 43. Therefore, the current collector 31 of this embodiment does not have anything supported by the side plate, and even if the side plate is deformed, the energization state of the current collector 31 is not adversely affected.

FIGS. 5 and 6 are views showing brushes of other embodiments applied to this invention, which are different from those shown in FIGS. 2 to 4. In FIG. 5, a brush holder 70 is constructed in substantially the same manner as the brush holder described in FIG. 2, except that annular grooves 71 and 72 are formed with holes 71a and 72a for fitting brush terminals. has been done. The brushes 73 and 74 fitted into the annular grooves 71 and 72 are each formed from an integral annular metal plate. The brush 74 is formed by making four notches 74a communicating with the outer periphery at equal intervals in an annular metal plate, and then raising the notches to form a contact piece 74b.
Brush 73 is also formed in the same manner as brush 74.
Since the contact pieces are formed at equal intervals on the circumferential surface of the brush, each contact piece stably contacts the annular electrode.

In addition, in FIG. 5, a notch is made through the outer periphery of the annular metal plate to form a contact piece on the outer periphery, but as shown in FIG.
A contact piece 81b may be formed at a position intermediate between the inner circumference and the outer circumference by making a letter-shaped cut 81a, and
A contact piece may be formed on the inner circumference side by making a notch leading to the inner circumference of the annular metal plate. The material of the brush is not particularly limited as long as it is a metal that is elastic enough to make good contact with the annular electrode, but phosphor bronze is recommended from the viewpoint of workability and cost.

According to the above-described embodiment, since the current collector uses metal electrodes for the annular electrode and the brush, the electrical resistance is lower than when graphite is used, and the heat generation is extremely small. Furthermore, since it can be manufactured without using expensive materials such as graphite, it can be manufactured at low cost. The current collector of this embodiment can be attached integrally by combining the annular electrode and the brush, so it can be easily attached to the cable reel body, and the manufacturing process can be simplified.

[Effects of the invention] As described above, according to this invention, the cable reel has a rotating shaft that rotates together with the winding drum around a fixed shaft, and a stationary part fixed to the fixed shaft, which are electrically connected. A current collecting part is provided, and an outlet electrically connected to the stationary part is attached to a side plate fixed to a fixed shaft. Even if I let you,
The outlet does not rotate, and the cords of power tools used will not get twisted.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of this invention.
FIG. 2 is a front view showing the configuration of the current collector shown in FIG. 1. FIG. 3 is a sectional view taken along the - line in FIG. 2. FIG. 4 is a sectional view of the combined current collector section. FIGS. 5 and 6 are views showing brushes of other embodiments applied to this invention. FIG. 7 is a perspective view showing a cable reel according to an embodiment of this invention. FIG. 8 is a perspective view showing a conventional cable reel. FIG. 9 is a partially cutaway side view of a conventional cable reel. In the figure, 21 is a cable reel, 22 is a support leg, 23 is a shaft, 24 is a winding drum, 25 and 26 are side plates, 261 is a circular member, 262 is an annular member, 27 is an outlet, 28 is a cable, and 31 is a current collector. 32 is an annular electrode holder, 33 is a locking pin, 34a, 34b, 38a and 38b are terminals, 37 is a brush holder, 41 is an engaging portion, 42 is a support plate, 43 is an engagement pin, and 44 is a support member , 45
is a set screw, 53, 55, 73 and 74 are brushes, and 63 and 65 are annular electrodes.

Claims (1)

[Claims for Utility Model Registration] (1) A support leg, a fixed shaft fixed to the support leg, and a winding trunk rotatably supported by the fixed shaft and around which a cable is wound. In the cable reel, the winding drum section includes: a cylindrical winding drum around which the cable is wound; and a first winding drum attached to one side of the winding drum and rotatable about the fixed shaft. a side plate, an annular member having a circular opening at its center and attached to the other side of the winding drum, and an annular member provided at the opening of the annular member and having its center fixed to the fixed shaft. a second side plate with an outlet attached to the disc member; a rotating part that rotates together with the side plate of 1, the stationary part is provided with a first electrode electrically connected to the outlet attached to the disc member, and the rotating part includes a first electrode that is electrically connected to the outlet attached to the disc member; and a current collector section provided with a second electrode electrically connected to the tip of the cable and in contact with the first electrode. (2) The cable reel according to claim 1, wherein one of the first electrode and the second electrode is an annular electrode, and the other is a brush. (3) The cable reel according to claim 2, wherein the brush is made of a partially protruding metal plate, and the protruding portion of the metal plate elastically contacts the annular electrode. (4) The brush has a plurality of contact pieces formed by making a plurality of notches in an annular metal disc and raising the notches on one side of the metal disc, a claim for utility model registration. The cable reel described in item 3 of the scope.