JP3188801B2 - Reel device for cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable reel device for connecting members which rotate relative to each other with a cable.

[0002]

2. Description of the Related Art Conventionally, a cable reel device described in, for example, Japanese Patent Application Laid-Open No. 5-56543 is known. This cable reel device is a so-called flat cable in which a plurality of cores are juxtaposed between an electric component provided on a vehicle body side of an automobile and an electric component provided on a steering wheel rotating in a forward / reverse direction. Are electrically connected.

[0003] The flat cable is housed in a hollow annular case body fitted to the steering shaft. This case body is formed by combining a cylindrical frame body fixed to a member on the vehicle body side and a cylindrical shaft body provided inside the frame body and rotating together with the steering wheel so as to be rotatable with each other. It is configured.
The flat cable is housed in a space formed between the frame and the shaft with one end attached to the frame and the other end attached to the shaft.

Further, a guide having a substantially C-shape in a plane for guiding the flat cable and preventing winding disturbance is accommodated in the space. This guide is formed by providing a reverse insertion portion through which a flat cable is inserted into a part of the ring, and is rotatably disposed around the shaft.

In this cable reel device,
With the steering wheel rotated in one direction,
The flat cable is drawn inside the guide while being inverted into a U-shape through the inversion portion of the guide, and wound around the outer periphery of the shaft. In a state where the steering wheel is rotated in the opposite direction, the unwound flat cable is inverted into a U-shape through the reversing insertion portion of the guide body, and the guide body is pushed by the inverted portion while being pushed. It is fed out of the guide body and wound around the inner peripheral side of the frame body.

Therefore, as compared with a so-called clock spring type cable reel device in which the flat cable is wound around the shaft body in one direction, and the flat cable is unwound or wound, the flat cable is wound. The length of the cable can be reduced.

Further, in this cable reel device,
A strip-shaped slip sheet is provided along the peripheral surface of the flat cable. Therefore, the frictional resistance generated between the flat cable and the guide body is reduced, and the operation of winding the flat cable around the outer peripheral side of the shaft body and the operation of winding the flat cable around the inner peripheral side of the frame body are smoothly performed. Also, when the flat cable is rewound, the flat cable that pushes the guide body is prevented from buckling to prevent winding disorder.

[0008]

However, in the above-mentioned conventional construction, it is necessary to arrange a slippery sheet along a flat cable having a large longitudinal dimension, which requires a complicated operation and a high material cost. Therefore, there is a problem that the manufacturing cost increases.

Further, by using a flat cable having a large elastic force, it is possible to prevent buckling at the reversal portion.
When a flat cable having a large elastic force is used, it is necessary to set the turning radius of the reversal portion large, and there is a problem that the cable reel device becomes large. Further, such a flat cable having a large elastic force has a large thickness dimension and requires a large storage space at the time of winding, and this also causes an increase in the size of the cable reel device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cable reel device that can reduce manufacturing costs and operate smoothly.

[0011]

A cable reel device according to the present invention is provided with a substantially cylindrical frame, and provided inside the frame so as to be rotatable in forward and reverse directions relative to the frame. A case having a shaft portion, and a cable housing portion formed between the frame portion and the shaft portion, and one end is connected to the frame portion, and the other end is connected to the shaft portion. The cable wound around the outer periphery of the shaft and the inner periphery of the frame in the opposite direction with the relative rotation of the frame and the shaft in the forward and reverse directions, and the cable storage portion. A cable reel device, comprising a guide housed and located between a cable wound around an outer peripheral portion of the shaft portion and a cable wound around an inner peripheral portion of the frame portion to guide the cable. , The guide body is positioned around the shaft portion and rotates in the circumferential direction. It forms a free and substantially annular shape, and a reversing insertion portion for inserting and reversing the cable is formed, and with the reversing insertion portion interposed, a projecting surface portion on the side where the cable is introduced and led out, A concave surface portion facing the projecting surface portion is formed, and a radial dimension on the inner peripheral side on the projecting surface portion side is larger than a radial dimension on an inner peripheral side on the concave surface portion side. .

[0012]

In the cable reel device according to the present invention, the cable reel device is disposed between the members rotating relatively in the forward and reverse directions, and the frame and the shaft are connected to each member. Accordingly, these members are connected by a cable housed in a cable housing portion between the frame portion and the shaft portion, and power or a signal is transmitted by the cable.
Then, in a state where the shaft portion is rotated in one direction relative to the frame portion, the cable passes through the reverse insertion portion of the guide body, and
While being inverted in the shape of a letter, the protruding surface of the guide body is pushed and rotated while being drawn into the guide body and wound around the outer periphery of the shaft. Further, in a state where the shaft is rotated in the opposite direction, the cable is reversed in a U-shape through the reversing insertion portion of the guide while being unwound from the shaft, and the concave surface of the guide is pressed. While moving and rotating,
It is fed out of the guide and wound around the inner periphery of the frame.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a reel device for a cable according to an embodiment of the present invention;

1 to 4, reference numeral 11 denotes a case,
The case 11 is formed in a substantially hollow annular shape by combining an assembling member 12, a rotor 14, a stator 15, an outer case 16, and the like, each integrally formed of a synthetic resin such as copolymerized polyacetal. Inside the case 11, an annular cable storage portion 17 is formed, and in the cable storage portion 17, an annular guide 21 and a flat cable 22 as a cable are stored. A reel device is configured.

The cable reel device is mounted, for example, between a steering wheel main body and a so-called combination switch while being fitted to a steering shaft of an automobile. The steering wheel body is attached to the upper end of the steering shaft, and rotates together with the steering shaft. On the other hand, the combination switch is fitted to a steering flam provided outside the steering shaft and attached to the vehicle body. And the flat cable 22 of this cable reel device
, Airbag device, horn switch, constant speed traveling device (ASCD) provided on the steering wheel body
The electric components such as the operation switch of the audio device and the operation switch of the audio device are electrically connected to the electric components such as the battery, the impact sensor, the horn device, the cruise control device, and the audio device provided on the vehicle body side. It has become.

The steering shaft is connected to a steering transmission of an automobile, for example, from two rotations in the left and right directions from the neutral position to 2.5 in accordance with the gear ratio of the steering transmission. The more you rotate, the more you can rotate.
That is, a so-called lock-to-lock operation is performed so that a rotation operation can be performed about 4 to 5 rotations at the maximum.

The flat cable 22 is, for example,
A plurality of conductors, such as 2 to 9 wires, are arranged in parallel and integrally covered with an insulating film or the like.
In addition, it is formed in a belt shape having some elasticity. In the vicinity of both ends of the flat cable 22, conversion parts 22a made of synthetic resin or the like are formed. Further, connectors (not shown) are connected to both ends of the flat cable 22. The connectors are mounted on the other connectors provided on the steering wheel body and the combination switch, respectively, and are electrically connected.

The outer case 16 has a cylindrical outer tube portion 31, as shown in FIGS. From the lower end of the outer tubular portion 31, a vehicle-body-side mounting portion 32 having a substantially trapezoidal planar shape is provided so as to protrude outward. Further, from the outer peripheral edge of the vehicle-body-side mounting portion 32, a mounting piece 33 protrudes downward, and mounting holes 34 to be fixed to the combination switch are formed at four corners of the mounting piece 33. ing. Further, a plurality of stator fixing portions 35 are formed on the lower surface side of the vehicle body-side mounting portion 32. This stator fixing part
35 comprises a recess 35a recessed upward and a caulking pin 35b projecting from the recess 35a. A cable lead-out portion 36 is formed on one side of the outer cylindrical portion 31 so as to protrude laterally and open downward. Further, an annular guide holding portion 37 projects inward from the vicinity of the upper end of the outer cylindrical portion 31.
On the upper side of the guide holding portion 37, two substantially annular projecting ridges 37a and 37b are protruded.

As shown in FIGS. 1 to 3, the stator 15 has a disc-shaped lower plate portion 41 fitted near the lower end of the outer cylindrical portion 31 of the outer case 16. A fitting hole 41a is formed in the center of the lower plate portion 41. Further, from the outer peripheral portion of the lower plate portion 41, a projecting portion 42 that fits into the recessed portion 35a of the stator fixing portion 35 of the outer case 16 is formed. A caulking hole 42a is formed for inserting the caulking pin 35b of the fixing portion 35. Then, caulking pin 35b of this stator fixing portion 35
The stator 15 and the outer case 16 are fixed by passing through the caulking hole 42a and heat caulking the protruding piece 42. Further, two annular grooves 43a and 43b are formed on the upper surface of the lower plate portion 41 so as to be recessed downward.

A substantially cylindrical frame portion 44 projects upward from the vicinity of the outer peripheral portion of the lower plate portion 41 of the stator 15. The frame portion 44 is formed so as to be separated from the inside of the outer cylinder portion 31 of the outer case 16, and an outer peripheral side space portion 45 is formed between the outer cylinder portion 31 and the frame portion 44. I have. Further, an outer peripheral side cable lead-out portion 46 is provided at one side of the frame portion 44. The outer cable side lead-out portion 46 has an insertion portion 44a formed in the frame portion 44, and a substantially arc-shaped closing plate 47 provided on the inner circumference side of the frame portion 44 so as to cover the insertion portion 44a. are doing. And the cable storage section
The flat cable 22 stored in the frame 17
Between the frame 44 and the closing plate 47, and is inserted vertically between the frame 44 and the closing plate 47.
It is led to the outer peripheral portion of the frame portion 44 from 44a.

Further, the flat cable 22 led out to the outer peripheral portion of the frame portion 44 is folded back along the outer peripheral surface of the frame portion 44, and is directed downward at a folding line in a direction intersecting the width direction. It is folded. Further, a lower cable holding portion 48 is formed below the outer peripheral side cable lead-out portion 46. The lower cable holding portion 48 is formed with a pair of engaging claws 48a, 48a on both sides. By engaging the engaging claws 48a, 48a with the engaging recesses 22b, 22b formed in the conversion part 22a of the flat cable 22, the vicinity of one end of the flat cable 22 is held and held. Further, the outer cable side lead-out section 46 and the conversion section 22a of the flat cable 22 are covered and protected by the cable lead-out section 36 of the outer case 16.

The rotor 14 has a substantially disk-shaped upper plate portion 51, as shown in FIGS. The upper plate portion 51 is in contact with two projecting ridges 37a and 37b projecting above the guide holding portion 37 of the outer case 16, and is in the vicinity of the upper end of the outer cylindrical portion 31 of the outer case 16. It is arranged rotatably inside the. A circular hole 51a is formed in the center of the upper plate portion 51. Further, caulking pins 52 project from four places around the circular hole 51a. Also,
Located on one side of this circular hole 51a, the upper cable holding portion
53 are provided. The upper cable holding portion 53 is composed of an engagement recess 54 formed by recessing the upper plate portion 51, and engagement claws 55 formed on both sides of the engagement recess 54.

From the lower side of the upper plate portion 51, a circular hole 51 is formed.
A substantially cylindrical shaft portion 56 is protrudingly provided at the periphery of a. Then, in a state where the rotor 14 and the stator 15 are combined, the shaft portion 56 of the rotor 14 and the frame portion 44 of the stator 15 are combined.
The cable housing 17 is formed between the two. Also,
On one side of the shaft portion 56, an inner peripheral side cable lead-out portion 57 is provided. The inner peripheral side cable lead-out portion 57 is
And a closing plate 58 provided on the inner peripheral side of the shaft portion 56 so as to cover the insertion portion 56a. Then, the flat cable 22 stored in the cable storage portion 17 passes through the insertion portion 56a, passes between the inner peripheral surface of the shaft portion 56 and the closing plate 58, and is led out to the inner peripheral side of the shaft portion 56. ing. Further, the flat cable 22 led out to the inner peripheral side of the shaft portion 56 is folded upward along a folding line in a direction intersecting the width direction, and is folded along the upper surface of the upper plate portion 51. . Then, the conversion part 22a near the other end of the flat cable 22 is fitted into the engagement concave part 54 of the upper cable holding part 53 of the upper plate part 51, and the engagement claws 55 on both sides are connected to the conversion part 22a.
The other end of the flat cable 22 is engaged with and held by the rotor 14 in a state where the flat cable 22 is engaged with the engaging concave portions 22b. Further, except for the vicinity of the cable holding portion 53, a substantially annular bulging portion 59 is formed to protrude thickly along the upper end portion of the inner peripheral portion of the shaft portion 56.

The assembling member 12 has an inner cylindrical portion 61 having a substantially cylindrical shape. The inner cylindrical portion 61 fits outside the boss of the steering shaft or the steering wheel body fitted to the steering shaft, and fits inside the shaft portion 56 of the rotor 14. In addition, a flange portion 62 having a substantially annular shape protrudes outward from an upper end portion of the inner cylindrical portion 61. Further, from four places of the flange portion 62, the fixing piece portion
63 are formed, and a caulking hole 63a is formed in each fixing piece 63. Further, a stator fitting portion 64 is formed radially at a lower end portion of the inner cylindrical portion 61. Each stator fitting portion 64 has a substantially U-shaped cross section, and is formed so as to be elastically deformable toward the inner peripheral side. Further, a cable pressing portion 65 having a substantially U-shaped cross section is provided on one side of the flange portion 62 so as to protrude upward.

In the assembly member 12, the inner cylindrical portion 61 is fitted inside the shaft portion 56 of the rotor 14, and the flange portion 62 is
While being in contact with the upper surface of the upper plate 51 of the mounting member 14, the caulking pin 52 of the rotor 14 is inserted into the caulking hole 63a of the fixing piece 63 of the assembling member 12 and heat caulked, thereby being fixed to the rotor 14. ,
It is designed to rotate with the rotor 14. Further, in this state, the cable holding portion 65 of the assembling member 12 fits above the conversion portion 22a near the other end of the flat cable 22, and presses the conversion portion 22a.

Further, the stator fitting portion 64 of the assembly member 12
Is pressed into the fitting hole 41a of the lower plate portion 41 of the stator 15, so that the stator fitting portion 64 and the fitting hole 41a are slidably fitted. In this state, the assembly member 12 and the rotor 14
And the outer case 16 and the stator 15 are rotatably combined with each other.

As shown in FIGS. 1 to 3 and 7, the guide body 21 is formed in a substantially annular shape disposed between the shaft portion 56 of the rotor 14 and the frame portion 44 of the stator 15. . The guide body 21 has an inner plate portion facing the outer peripheral surface of the shaft portion 56.
71, and an outer plate portion 72 concentric with the inner plate portion 71 and facing the inner peripheral surface of the frame portion 44. Further, the upper end of the inner plate 71 and the upper end of the outer plate 72 are
And are formed in a substantially U-shaped cross section. The lower end of the inner plate 71 and the lower end of the outer plate 72 are slidably fitted in the grooves 43a and 43b of the stator 15, respectively, and the guide 21 rotates around the shaft 56. Guided freely.

Further, one side portion of the guide body 21 is provided with a reversing insertion portion 73 for communicating the inner peripheral side and the outer peripheral side of the guide body 21.
Are formed. The reversing insertion portion 73 is formed in an arc shape, and has a protruding surface portion 74 and a recessed surface portion 75 that are circumferentially opposed to each other. In addition, these projecting surfaces 74
And the concave surface portion 75 are each formed into a smooth curved surface.

The upper plate 72a of the guide 21 is formed with a projecting portion 76 in an arc shape, and the outer periphery of the projecting portion 76 is provided with the guide holding portion 37 of the outer case 16. An engagement step portion 77 slidably fitted to the inner peripheral portion is formed.

In the vicinity of the upper end on the inner peripheral side of the inner plate 71 of the guide body 21, a plurality of inner ridges 78 are formed at predetermined intervals as protrusions having a circumferential direction as a longitudinal direction. Also,
In the vicinity of the lower end on the outer peripheral side of the outer plate portion 72 of the guide body 21, a plurality of outer protrusions 79 having a circumferential direction as a longitudinal direction are formed at predetermined intervals. Each of the ridges 78 and 79 has a hemispherical cross section, and has a smooth surface.

The total of the protrusion of the inner ridge 78 and the thickness of the inner plate portion 71 is formed to be larger than the width of the groove 43a inside the stator 15, and the protrusion of the outer ridge 79 is formed. The sum of the dimension and the thickness dimension of the outer plate portion 72 is formed larger than the width dimension of the groove 43b outside the stator 15.
Therefore, the tip of the inner ridge 78 projects more inward than the inner groove 43a, and the tip of the outer ridge 79 fits the outer groove 43a.
It protrudes outward from b.

Further, the inner ridge 78 is not formed in the vicinity of the protruding surface portion 74, but is formed so that the front end portion 78a protrudes from the end of the concave surface portion 75. as shown in 1, the radial dimension of the inner peripheral side of the guide body 21, the radial dimension R ₁ of projecting face portion 74 side is set larger than the radius R ₂ of the recessed surface portion 75 side.

The flat cable 22 accommodated in the cable accommodating portion 17 is inserted through the reversing insertion portion 73 of the guide 21 and is bent and bent substantially U-shaped along the reversing insertion portion 73. The outer peripheral surface of the shaft 56 and the inner plate of the guide 21
It is wound between the inner peripheral surface of the frame 71 and the outer peripheral surface of the outer plate 72 of the guide body 21. That is, the flat cable 22 is wound counterclockwise from the inner peripheral side toward the outer peripheral side inside the guide body 21 when viewed from above, and From the outside toward the outer circumference.

In this state, the radius dimension R ₂ on the concave surface portion 75 side is set so that the flat cable 22 is wound on the outer peripheral surface of the shaft portion 56 as much as possible so that there is a margin. I have.

Further, in this state, each ridge 7 of the guide 21 is
Reference numerals 8 and 79 are configured to abut on the film-only portion while avoiding the conducting wires of the flat cable 22.

In the cable reel device configured as described above, the inner cylindrical portion 61 of the assembling member 12 is fitted to the steering shaft, the stator 15 is fixed to the combination switch on the vehicle body side, and the rotor 14 is It is mechanically installed on a steering device while being fixed to a boss plate or the like of a steering wheel.

Further, in the cable reel device, the connector of the flat cable 22 extending upward is connected to the other connector provided inside the steering wheel, so that the ignition of the airbag device provided on the steering wheel is performed. By connecting the connector of the flat cable 22 that is electrically connected to the electrical components such as a container and a horn switch to the lower side to the other connector provided on the vehicle body side, the battery and the shock absorber provided on the vehicle body side can be connected. They are electrically connected to electric components such as sensors, and are electrically connected between these electric components.

Next, the operation of this embodiment will be described.

First, when the steering wheel is fully rotated clockwise as viewed from above (occupant side), the flat cable 22 is pulled by the shaft 56 of the rotor 14 and Are wound clockwise from the outer peripheral side toward the inner peripheral side.

When the steering wheel is rotated in the counterclockwise direction from this state, the flat cable 22 is rewound inside the guide 21, and as shown in FIG. It is pressed against the inner peripheral surface of the inner plate 71.

Further, when the steering wheel is rotated in the counterclockwise direction, FIGS. 8B and 8C are obtained.
As shown in (1), the flat cable 22 moves along the inner plate portion 71 on the protruding surface portion 74 side, and is fed out of the guide body 21 through the reverse insertion portion 73 of the guide body 21. At this time, the flat cable 22 is bent in a substantially U-shape by the reversing insertion portion 73 and pushes the concave surface portion 75 of the reversing insertion portion 73 to move the guide body 21 in the counterclockwise direction. Rotate to. Further, the flat cable 22 fed out of the guide body 21 through the reversing insertion portion 73 is pressed and wound on the inner peripheral side of the frame portion 44 of the stator 15 by its own elasticity.

Further, in a state where the steering wheel is rotated to the maximum counterclockwise direction,
Most of the flat cable 22 is pressed against the inner peripheral side of the frame portion 44 of the stator 15, and is wound counterclockwise from the outer peripheral side toward the inner peripheral side.

In this state, when the steering wheel is rotated clockwise, the flat cable
The shaft 22 is pulled by the shaft 56 of the rotor 14 and is wound around the outer periphery of the shaft 56. At this time, a flat cable
The guide body 21 passes through the reverse insertion portion 73 of the guide body 21.
And pushes the protruding surface 74 of the reversing insertion portion 73 to rotate the guide body 21 in the clockwise direction.

When the steering wheel is fully rotated clockwise, the flat cable 22 is largely wound around the outer periphery of the shaft 56 of the rotor 14 and returns to the initial state.

As described above, according to the cable reel device of the present embodiment, the flat cable 22 is stored in the cable storage portion while the steering wheel is rotated in the forward and reverse directions.
Since the flat cable 22 can be wound in one direction around the center axis because it can be wound in the forward and reverse directions inside the cable 17, the flat cable 22 can be wound or unwound in a cable reel device. In comparison, the length of the flat cable 22 can be greatly reduced, and the manufacturing cost can be reduced.

The guide body housed in the cable housing 17
21 allows the flat cable 22 to be separately wound around the outer peripheral portion of the shaft portion 56 of the rotor 14 and the inner peripheral portion of the frame portion 44 of the stator 15, so that the flat cable 22 is moved smoothly, Can be rotated stably.

Since the inner ridge 78 and the outer ridge 79 having the circumferential direction as the longitudinal direction are formed on the inner peripheral side and the outer peripheral side of the guide body 21, respectively, the guide body 21 and the flat cable are formed. The contact area with the flat cable 22 is reduced, the frictional resistance is reduced, and the flat cable 22 can be moved smoothly.

Further, the inner protruding ridge 78 is not formed near the protruding surface portion 74, and is formed so that the front end portion 78a protrudes from the end of the concave surface portion 75.
Radial dimension of the inner circumferential side of the radial dimension R ₁ of projecting face portion 74 side is set larger than the radius R ₂ of the recessed surface portion 75 side. Therefore, when the flat cable 22 is unwound, the flat cable 22 fed out along the projecting surface portion 74 is guided by the distal end portion 78a of the inner ridge 78, and curves along the concave surface portion 75. , Are smoothly introduced into the reverse insertion portion 73.

In this manner, even when the flat cable 22 is unwound from the shaft portion 56 of the rotor 14, as shown in FIG. 10, the radial dimension on the projecting surface portion 74 and the radial dimension on the concave surface portion 75 side are used. The flat cable 22 is prevented from bulging inwardly and buckling, as in the case of using the guide body 21a having Irrespective of a change in frictional resistance, the cable reel device can be stably rotated.

Since the flat cable 22 can be moved smoothly in this manner, a thinner and more flexible flat cable 22 having low elasticity can be used. Therefore, the radius of the bent portion of the flat cable 22 in the reverse insertion portion 73 of the guide 21 can be reduced, so that the diameter of the guide 21 can be reduced, and it is not necessary to use a slippery sheet as in the related art. Therefore, the storage space for the winding of the flat cable 22 itself is sufficient, so that the cable reel device can be downsized.

Generally, from the dimensions of the boss portion of the steering wheel, the outer diameter of the shaft portion 56 is 45 mm to 55 mm and the inner diameter of the frame portion 44 is 90 mm to 100 mm.
mm, and the thickness of the flat cable 22 is usually about 0.1 mm to 0.5 mm. Therefore, in such a case, the difference between the radius R ₁ and radius R ₂ about 1mm~5mm are preferred. However, it is not limited to this.

The inner ridge 78 is formed near the upper end of the guide 21, and the outer ridge 79 is formed near the lower end of the guide 21. Thus, the protrusions 78 and 79 are prevented from coming into contact with each other, and the flat cable 22 can be prevented from being damaged.

Further, since these ridges 78 and 79 are formed so as to be in sliding contact with only the film, avoiding the respective conductors of the flat cable 22, it is possible to more reliably prevent damage to the respective conductors. Can be.

The guide body 21 is integrally formed of a synthetic resin, and the ridges 78 and 79 are also integrally formed from the guide body 21, so that the structure can be simplified. .
Therefore, compared to a cable reel device that configures the guide body 21 using a plurality of rollers, or a configuration in which the entire length of the flat cable 22 is processed, the number of parts and material cost are reduced, and workability is improved. In addition, the manufacturing cost can be reduced.

The lower plate 41 of the stator 15 has a guide 21
The lower ends of the inner plate 71 and the outer plate 72 have slidably fitted annular grooves 43a and 43b, respectively. Can be smoothly rotated. Thus, the flat cable 22 can be moved smoothly, and the occurrence of abnormal noise can be reduced.

Further, an inner ridge 78 and an outer ridge 79 project from the inner peripheral side and the outer peripheral side of the guide body 21, respectively, so that the flat cable 22 is connected to the inner and outer grooves 43 a of the stator 15. , 43b and the guide body 21 can be prevented. Therefore, the flat cable 22 can be smoothly moved, and the cable reel device can be stably rotated.

In the above-described embodiment, the bent portion of the flat cable 22 is guided by extending the inner ridge 78 of the guide body 21 and projecting from the concave surface portion 75. For example, FIG. As shown in the figure, a protrusion 81 having a longitudinal direction in the up-down direction (axial direction of the rotation axis) is formed along the inner peripheral edge of the concave surface portion 75 of the guide body 21. The bent portion of the flat cable 22 can be guided. Further, the radius of the inner peripheral side of the projecting portion 81 can be gradually increased as the distance from the reversing insertion portion 73 increases, and the projecting portion 81 can be smoothly connected to the inner plate portion 71 of the guide body 21.

In the above embodiment, the inner ridge 78 is formed near the upper end of the guide 21 and the outer ridge 79 is formed near the lower end of the guide 21. Are shifted in the vertical direction (axial direction of the rotating shaft) to prevent damage to the flat cable 22 by preventing the ridges 78 and 79 from abutting on a part of the flat cable 22 can do.

Further, an arc-shaped protruding portion is formed along at least one of the protruding surface portion 74 and the concave surface portion 75 facing the reversing insertion portion 73 of the guide body 21, so that the flat cable 22 can be connected to the flat cable 22. The frictional resistance with the guide 21 can be further reduced.

In each of the above embodiments, the inner ridge 78
Although the outer ridges 79 and the outer ridges 79 are formed intermittently along the circumferential direction, the ridges 78 and 79 may be formed continuously and substantially in an annular shape.

In each of the above embodiments, the flat cable 22 having a plurality of conductors arranged in parallel is used as the cable. However, a substantially cylindrical electric wire having a plurality of conductors housed in an insulating tube may be used. Further, an optical fiber or the like can be used instead of the conducting wire.

[0062]

According to the cable reel device of the present invention, the guide body has a radial dimension on the inner peripheral side on the side of the projecting surface on which the cable is introduced. Since the cable is set to have a larger radius than the inner peripheral side of the concave surface portion to be moved, when the cable is unwound from the shaft portion, the cable is smoothly introduced into the reverse insertion portion of the guide. Therefore, even if a thin and flexible cable is used, the cable does not buckle, can be moved smoothly, and the frame and the shaft can be rotated stably. Further, since the structure is simple, the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a cable reel device of the present invention.

FIG. 2 is a cross-sectional view of the same cable reel device.

FIG. 3 is an exploded perspective view of the cable reel device.

FIG. 4 is a plan view of the cable reel device.

FIG. 5 is a perspective view of an outer cover of the cable reel device.

FIG. 6 is a perspective view of a rotor of the cable reel device.

FIG. 7 is a perspective view of a guide body of the cable reel device.

FIG. 8 is an explanatory diagram showing the operation of the cable reel device.

FIG. 9 is a perspective view showing another embodiment of the guide body of the cable reel device of the present invention.

FIG. 10 is a partial cross-sectional view showing the operation of the conventional cable reel device.

[Explanation of symbols]

 11 Case 17 Cable storage section 21 Guide 22 Flat cable as a cable 44 Frame section 56 Shaft section 73 Insertion section for reversing 74 Projecting surface section 75 Recessed surface section

Claims (1)

(57) [Claims] 1. A case having a substantially cylindrical frame portion, a shaft portion provided inside the frame portion so as to be rotatable in the normal and reverse directions relative to the frame portion, and these frame portions. Stored in a cable storage portion formed between the portion and the shaft portion, one end portion is connected to the frame portion, the other end portion is connected to the shaft portion,
A cable wound in the opposite direction to the outer peripheral portion of the shaft portion and the inner peripheral portion of the frame portion with the relative rotation of the frame portion and the shaft portion in the forward and reverse directions, and stored in the cable storage portion, A cable reel device comprising: a guide member positioned between a cable wound around an outer peripheral portion of the shaft portion and a cable wound around an inner peripheral portion of the frame portion to guide the cable; The body forms a substantially annular shape which is located around the shaft portion and is rotatable in the circumferential direction, and has a reversing insertion portion for inserting and reversing the cable, and sandwiching the reversing insertion portion. A projecting surface portion on the side from which the cable is introduced and led out, and a concave surface portion facing the projecting surface portion are formed, and further, a radial dimension of an inner peripheral side on the projecting surface portion side is set to the concave shape. Larger than the radius of the inner circumference on the face side A reel device for a cable, characterized in that it is sharp.