JPH0343194B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cord reel for storing various cords such as electrical wiring cords, telephone wiring cords, and optical cords in a wound state.

(Prior art) As a conventional technology, there is, for example, Japanese Utility Model Publication No. 1161/1983.

(Problems to be Solved by the Invention) An object of the present invention is to provide a cord reel that can prevent cords from being twisted or disarranged, and can be wound in an aligned state, and can accurately lock the cord's feeding state. It is.

(Means for Solving the Problems) In the cord reel of the present invention, the reel body is rotatably supported by the reel case, and the extension cord is wound around the outer periphery of the reel body so as to be able to be paid out. When the extension cord is connected to the proximal end of the extension cord, and the direction of winding is opposite to the winding direction of the extension cord with respect to the inside of the extension cord, the extension cord is unwound in sequence. The auxiliary cord is arranged in parallel with the auxiliary cord wound so as to be wound in the opposite direction, and a traverse guide is provided in the reel case for inserting the extension cord and defining the winding position of the extension cord. is installed so as to be movable back and forth in the direction of the rotation axis of the reel body, and the reel case is movable in the cord payout direction and the cord winding direction, and has a forward tilted position in the cord payout direction. and a lock piece pivotally supported so as to be able to swing so as to be converted into a backward tilted position in the cord winding direction, and this lock piece is biased toward the rotating shaft side of the reel body. A spring is attached to the reel body to hold it in the forward tilted position or the backward tilted position, and the reel body is in contact with the lock piece in the forward tilted position to prevent rotation of the reel body in the cord winding direction. A locking pawl is provided in the reel case so as to be engaged with and disengaged from the lock piece in order to abut the lock piece in the backward tilting position and push the lock piece in the cord feeding direction, The lock includes a position changing member which abuts the end of the lock piece pushed in the cord payout direction side by the locking pawl in the tilted position and converts the lock piece into the forward tilted position. It has a structure in which it protrudes opposite to the piece.

(Function) When the extension cord wound around the outer periphery of the reel body, which is rotatably supported by the reel case, is let out, the auxiliary cord wound inside the extension cord is pulled out from the tip side. The winding direction of the auxiliary cord is reversed when the extension cord is unwound one after another to the end, and when the extension cord is fed out the entire length, and when the extension cord is wound around the reel body, the extension cord is actively reciprocated and aligned. , the lock piece is supported by the reel case so as to be movable and swingable and is biased toward the rotating shaft of the reel body by a spring, and the lock piece is in a forward tilted position in which the lock piece swings in the cord feeding direction. In this state, the cord is engaged with a locking pawl provided on the reel body, and the rotational movement of the reel body is restricted to lock the cord feeding state. The locking piece is pushed in the cord feeding direction side by the locking pawl so as to come into contact with the attitude changing member, the swinging attitude of the locking piece is reversed by the attitude changing member, and the locking piece is engaged with the locking piece. The lock state is released by disengaging the claw.

(Example) Next, an example in which the present invention is embodied in a cord reel for telephone wiring will be described with reference to the drawings.

The reel case 1 of the cord reel R is formed into a hollow shape by detachably assembling a base 2 having a substantially cylindrical shape with a bottom, and a lid part 3 having approximately the same shape as the base 2 and covered by the base 2. A stepped cylindrical support shaft 4 is provided upright in the center of the base 2, while a cord insertion opening 5 is formed in a protruding portion 1b formed in a part of the side body portion 1a of the reel case 1. It is opened.

The reel body 6 inserted into the reel case 1 is supported horizontally rotatably at a distance slightly above the bottom surface of the base 2 via the support shaft 4, and is placed between the disc-shaped lower plate 6a and the middle plate 6b. It is always biased in the cord winding direction (Q direction) by a mainspring spring 7 whose outer end is connected to the side wall of the reel body 6 and whose inner end is connected to the spindle 4. . An outer wrapping portion 6f is formed between the vicinity of the outer end of the upper plate 6c and the flange 6d on the outer side of the partition wall 6e vertically provided slightly inward of the outer peripheral edge of the reel body 6; An inner winding part 6g is formed between the upper plate 6c and the middle plate 6b inside the winding part 6f, and is partitioned by a partition wall 6e. A suitable number (four in this example) of protrusions 8 to 8 are formed in a radial arrangement protruding along the direction, while a boss portion 6h is formed on the lower side near the center of the lower plate 6a. They are installed consecutively.

The extension cord 9, which has a substantially elliptical cross section, is wound in multiple layers in the outer wrapping portion 6f of the reel body 6 from the inner layer to the outer layer, aligned in the direction of the rotational axis of the reel body 6, and connected. Its outer end, to which a plug or the like is connected, is pulled out of the reel case 1 through the cord insertion port 5 of the reel case 1, while its base end is inserted into the cord hole 11 penetrated through the partition wall 6e of the reel body 6. The reel body 6 is inserted and fixed to the inner circumferential surface of the partition wall 6e, and when the extension cord 9 is fed out, the reel body 6 is rotated in the P direction (cord feeding direction).

The auxiliary cord 10, which is set to have approximately the same length as the extension cord 9, is attached to the inner winding portion 6g of the reel body 6.
The extension cord 9 is wound in a single layer in a direction opposite to the winding direction of the extension cord 9, with vertical movement restricted within the cord.
The base end of the auxiliary cord 10 is pulled out through the support shaft 4 toward the side body 1a of the reel case 1 and connected to the outlet 12 attached to the side body 1a, while the outer end of the auxiliary cord 10 is used for extension. Together with the base end of the cord 9, it is fixed to the inner circumferential surface of the partition wall 6e of the reel body 6 at a connecting portion 13, and is electrically conductively connected to the extension cord 9. When the extension cord 9 is fed out one after another with the entire length of the extension cord 9 wound around the reel body 6, the extension cord 9 and the auxiliary cord 10 are
Since the connection part 13 with the auxiliary cord 10 rotates in the P direction, the auxiliary cord 10 is sequentially wound back in the opposite direction (Q direction) from the outer end side to the base end side via the folded part 10a, and the winding direction of the auxiliary cord 10 is changed. is sequentially reversed (see FIG. 5B), and when the entire length of the extension cord 9 is unwound, the entire length of the auxiliary cord 10 is wound back in the opposite direction (see FIG. 5C). When the entire length of the auxiliary cord 10 is wound on the reel body 6, the auxiliary cord 10
is restored to its original state again, and the winding direction of the auxiliary cord 10 is reversed again (see FIG. 5A).

Cord insertion port 5 of reel case 1 and reel body 6
The rotatable shaft 14 erected between the outer wrapping portion 6f of the reel case 1 and the upper and lower supporting pieces 1
A cam groove 14a is formed on the outer peripheral surface of the cam groove 14a so that two spiral grooves communicate with each other at the upper and lower ends. The gear 16 is loosely fitted to the lower end of the support shaft 4 and meshed with the drive gear 17 attached to the lower surface of the boss portion 6b of the reel body 6 via the intermediate gear 18, and when the reel body 6 rotates, The rotatable shaft 14 is rotationally driven.

The traverse guide 19, which is provided for inserting the extension cord 9 and defining the winding position of the extension cord 9, is a cylindrical sleeve 21 that surrounds the rotatable shaft 14 and stands between both support pieces 15. and an auxiliary rod 22 erected between both support pieces 15 on the outside of this sleeve 21 so as to be vertically slidable;
The arm portion 19a is provided with a guide hole 20 through which the extension cord 9 is inserted, and the base portion 19b is provided with a guide hole 20 that passes through the elongated hole 21a of the sleeve 21 in the cam groove 14a of the rotatable shaft 14. When the inserted engagement pin 23 is attached and the rotatable shaft 14 rotates, the engagement pin 23 is guided by the cam groove 14a and moves up and down, and the traverse guide 19 is moved up and down by the extension cord 9.
The extension cord 9 moves back and forth in the vertical direction with the extension cord 9.
are wound in an aligned state within the outer winding portion 6f of the reel body 6, and are fed out from the outer winding portion 6f while maintaining the aligned state.

Next, the locking mechanism for locking the extended state of the extension cord 9 will be explained. The locking piece 24 is attached to the base 2 of the reel case 1 via a support pin 25 so as to be able to swing like a seesaw. A support pin 25 is inserted into the base 24a to displace the lock piece 24 in the rotational direction of the reel body 6 and to deviate the swinging fulcrum a of the lock piece 24 in the P direction and the Q direction. An elongated insertion hole 26 is provided therethrough, and a projecting piece 27 is provided protruding near the center of the outer surface of the base portion 24a.
On both sides of the base portion 24a, a pair of tapered extending portions 24b, 24b are formed symmetrically in the front and back, and when swinging, a ring-shaped sliding surface formed on the outer peripheral surface of the boss portion 6h of the reel body 6 is formed. 6i, each extending downwardly toward the front so as to be in sliding contact with the other end.

A spring 28 provided to press the lock piece 24 inward and forcibly swing the spring 28 has its base end connected to a pin 29 protruding from the base 2 of the reel case 1 outside the lock piece 24. At the same time, the free end of the lock piece 24 is curved so as to come into elastic contact with the outer surface of the base 24a and the protruding piece 27, and when the swing fulcrum a of the lock piece 24 shifts in the P direction, the lock piece The base 24a of 24 is the spring 2
8, the lock piece 24 is held in a forward-slanted swinging posture tilted downward in the Q direction, while when the swing fulcrum a of the lock piece 24 shifts in the Q direction, the lock piece 24 is locked. The piece 24 is held in a backward-slanted swinging posture in which it is tilted downward in the P direction.

The attitude changing member 30 is the base 2 of the reel case 1
The lock piece 24 is protruded at a slight distance from above in the P direction, and when the lock piece 24 is tilted downward in the Q direction, the swing fulcrum a of the lock piece 24 moves from the P direction to the Q direction. When the lock piece 24 is shifted, the tip of the extension 24b on the P direction side comes into contact with the inner surface of the attitude change member 30, changing the lock piece 24 from the backward tilted position to the forward tilt position tilted downward in the P direction. Can be reversed.

A pair of locking claws 31, 31 protruding from the sliding surface 6i of the reel body 6 to engage and disengage the lock piece 24.
are arranged in a 180° rotationally symmetrical manner, and each end near the Q-direction side is formed into a tapered shape, and the lock piece 2
When the reel body 6 rotates in the P direction by letting out the extension cord 9 while the position of the reel 4 is tilted downward in the P direction, both locking pawls 31 push up the P direction side extension 24b of the lock piece 24. On the other hand, when the reel body 6 rotates in the Q direction with the posture of the lock piece 24 tilted downward toward the Q direction, both locking pieces 31 move toward the Q direction side of the lock piece 24. Push up the extension part 24b and pass. Then, with the swinging fulcrum a of the lock piece 24 being shifted in the P direction and the posture of the lock piece 24 being tilted downward in the Q direction (see Fig. 6A), the reel body 6 rotates in the P direction. When this happens, the lock piece 24 is pushed in the P direction by the locking pawl 31, and the swinging fulcrum a of the lock piece 24 moves in the Q direction (see FIG. 6B), but during this movement, the lock piece 24 Since the tip of the P-direction side extension portion 24b comes into contact with the inner surface of the posture changing member 30, and the posture of the lock piece 24 is changed from the downwardly tilted forward posture toward the P direction (see FIG. 6C), the engagement The locking pawl 31 is allowed to rotate in the P direction (see Fig. 6, D), and the reel body 6 is rotated in the P direction while holding the locking piece 24 in a forward tilted position, and the extension cord 9 is continuously reeled. I can put it out. In this state, when the extension cord 9 is stopped feeding out and the extension cord 9 is released, the reel body 6 rotates in the Q direction due to the elastic force of the mainspring spring 7.
The locking pawl 31 abuts and engages the locking piece 24 and pushes the locking piece 24 in the Q direction (see Figure 7 A and B), and the locking piece 24 is moved by the locking pawl 31 to the moving end on the Q direction side. The rotational movement of the locking pawl 31 and the rotational movement of the reel body 6 are restricted, and the extended reel 9 is locked in the feeding state ( (See Figure 7b).
Furthermore, when the extension cord 9 is slightly let out in this state and the reel body 6 is slightly rotated in the P direction, the engagement between the lock piece 24 and the locking pawl 31 is disengaged, and the swing fulcrum a is moved toward the P direction. The lock piece 24, which is tilted forward in the state of being shifted to , is changed to the backward tilting position where it is tilted downward in the Q direction by the elastic force of the spring 28 (see FIG. The extension cord 9 can be continuously wound by rotating the reel body 6 in the Q direction by the elastic force of the mainspring spring 7.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, the reel body 6 that is rotatably supported in the reel case 1 has an extension cord 9 that is wound around the outer peripheral edge of the reel body 6 so that it can be fed out, and this extension cord. The extension cord 9 is connected to the base end of the extension cord 9 and is wound inwardly of the extension cord 9 in a direction opposite to that of the extension cord 9.
Since the auxiliary cord 10 is arranged in parallel with the auxiliary cord 10, which is wound in such a way that it is sequentially wound in the opposite direction when the extension cord 9 is let out, when the extension cord 9 is let out and wound up,
Even when the reel body 6 rotates, the auxiliary cord 10 is accurately wound in the forward and reverse directions without twisting, and the extension cord 9 can be fed out and wound while the base end of the auxiliary cord 10 is fixed. It is possible to securely connect the external wiring and the auxiliary cord 10 by eliminating a sliding contact such as a slip ring.

In particular, since an appropriate number of protrusions 8 are arranged radially on the lower surface of the upper plate 6c of the reel body 6, vertical movement of the auxiliary cord 10 is suppressed by each protrusion 8, and the auxiliary cord The winding operation of the extension cord 10 is regularly regulated, and the auxiliary cord 10 can be rewinded accurately while suppressing arrangement disorder and twisting.
0 is wound back with one side in point contact with each protrusion 8 and in a light contact state where the frictional resistance against the reel body 6 is significantly reduced. Reel body 6 due to friction
This has the effect of resolving the problem that the rotational movement of the auxiliary cord 10 is obstructed and smoothing the rewinding movement of the auxiliary cord 10.

In addition, a traverse guide 19 for inserting the extension cord 9 into the reel case 1 and defining the winding position of the extension cord 9 onto the reel body 6 is capable of reciprocating in the direction of the rotation axis of the reel body 6. Since the extension cords 9 are installed in the reel body 6, the extension cords 9 are aligned for each winding layer in the direction of the rotation axis of the reel body 6.
Extension cord 9
The extension cord 9
When feeding out the extension cord 9, the extension cord 9 wound around the reel body 6 can be smoothly unwound by advancing straight ahead of the winding position, and the extension cord 9 can be compactly stored with respect to the reel body 6. It has a soothing effect.

Furthermore, the reel case 1 is movable in the cord feeding direction and in the cord winding direction.
The lock piece 24 is pivotally supported so as to be able to swing so that it can be converted into a forward tilted position in the cord feeding direction and a backward tilted position in the cord winding direction.
A spring 28 is attached to the reel body 6 to urge the lock piece 24 toward the rotation axis of the reel body 6 and hold it in the forward tilted position or the backward tilted position. A lock is provided to abut against the piece 24 to prevent rotation of the reel body 6 in the cord winding direction, and to abut the lock piece 24 in the backward tilted position and push the lock piece 24 in the cord payout direction. A locking claw 31 that is engaged and detached from the piece 24
is provided protrudingly on the reel case 1, and the lock piece 24 is brought into contact with the end of the lock piece 24 pushed in the cord pay-out direction side by the locking pawl 31 in the backward tilted position. Since the posture changing member 30 for changing the forward leaning posture is provided in a protruding manner opposite to the locking piece 24, the locking mechanism for locking the extended state of the extension cord 9 can be simplified and made compact, and the extension cord can be easily extended. It has the effect of being able to accurately lock the extension cord 9 in any extended state, and simplifying the locking and unlocking operations for the extension cord 9. Also, when locking the extension cord 9 with the extension cord 9 extended a predetermined length, Lock piece 24
Since the attitude of the locking member 30 is actively changed by the attitude changing member 30, the locking operation by the locking piece 24 and the locking pawl 31 can be performed accurately, and the incomplete attitude changing movement of the locking piece 24 can be prevented. It is possible to solve the problem that the lock operation becomes impossible due to the locking operation.

(Effects of the Invention) Since the present invention is configured as described above, the locking mechanism for locking the extended state of the extension cord is simplified and compact, and the extension cord can be accurately locked in any extended state. It also has the effect of simplifying the locking and unlocking operations for the extension cord, and also has the effect of simplifying the locking and unlocking operations for the extension cord, and when locking the extension cord with the extension cord extended by a predetermined length, the posture of the lock piece is changed by the posture changing member. Since it is actively converted, the locking operation by the locking piece and the locking pawl can be performed accurately.
It is possible to eliminate the problem in which the locking operation becomes impossible due to an incomplete posture change operation of the locking piece.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view of the cord reel, and FIG.
An X-ray sectional view, FIG. 3 is a Y-Y line directional view, FIG. 4 is an exploded perspective view of the reel body, and FIGS. Schematic cross-sectional view to explain, Figure 6 A, B, C,
D is a plan view sequentially explaining the operation of the locking mechanism when the cord is fed out; FIGS. 7A, B, and C are plan views sequentially explaining the locking and unlocking operations of the locking mechanism; FIGS. 3A and 3B are plan views sequentially illustrating the operation of the lock mechanism when winding the cord. 1...Reel case, 6...Reel body, 9...
Extension cord, 10...Auxiliary cord, 19...Traverse guide, 24...Lock piece, 30...Position changing member, 31...Latching claw, R...Cord reel.

Claims (1)

[Claims] 1. A reel body rotatably supported by a reel case has an extension cord wound around the outer periphery of the reel body so as to be able to be fed out, and an extension cord connected to the base end of the extension cord and connected to the extension cord. The auxiliary cord is wound in such a way that the winding direction is opposite to the winding direction of the extension cord, and the auxiliary cord is wound in the opposite direction when the extension cord is let out. while a traverse guide for inserting the extension cord and defining a winding position of the extension cord is installed in the reel case so as to be movable back and forth in the direction of the rotation axis of the reel body; The reel case is movable in the cord payout direction and the cord winding direction, and can be switched between a forward tilted position in the cord payout direction and a backward tilted position in the cord winding direction. A lock piece that is pivotally supported so as to be able to swing, and a spring that biases this lock piece toward the rotating shaft side of the reel body and holds it in the forward tilted position or the backward tilted position are attached. , the reel body is in contact with the lock piece in the forward tilted position to prevent rotation of the reel body in the cord winding direction side, and is in contact with the lock piece in the backward tilted position to lock the lock piece. A locking pawl that is engaged and disengaged from the lock piece is provided in a protruding manner in order to push the reel case in the cord feeding direction, and the reel case is pushed in the cord feeding direction by the locking pawl in the backward tilted position. A cord reel characterized in that a posture changing member is provided in a protruding manner opposite to the lock piece for abutting against the end of the lock piece on the cord feeding direction side and converting the lock piece into the forward tilted position.