JPH1012345A - Relay device between relative rotation members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay device between relative rotation members capable of effectively preventing vibration noises due to abutting with a mover and a top cover without increasing cost. SOLUTION: This device is provided with a first rotor (rotor) 11 having an inside cylinder portion 11a, a second rotor (rotor) 12 having an outside cylinder portion 12a surrounding the inside cylinder portion 11a at a specified interval and relatively rotating along the inside cylinder portion 11a, a mover 21 housed along a circular space K between the inside cylinder portion 11a and the outside cylinder portion 12a and inverting a flexible flat cable 13, a lower cover 12b for covering a lower side of the space K, and an upper cover 14b for covering an upper side of the space K. And, plural protrusions 21d protruded upwardly is provided on a top face of the mover 21, and cone-face shaped slope faces 14d are provided at a position corresponding to the protrusions 21d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay device for relatively rotating members, which performs electrical connection between relatively rotating members via a cable.

[0002]

2. Description of the Related Art As this kind of relay device between relative rotating members, for example, the one shown in FIG. 15 is known. The relative rotary member relay device 10 shown in FIG.
(First rotator) 11 having inner cylindrical portion 1
A fixed body (second rotator) 12 having an outer cylindrical portion 12a surrounding the outer cylindrical portion 1a at a predetermined interval, and an annular space K between the inner cylindrical portion 11a and the outer cylindrical portion 12a, the same space K
Along the inner peripheral end 13a of the inner cylindrical portion 11a.
(Flexible flat cable) 13 whose outer peripheral end 13b is held by the outer cylindrical portion 12a
And movably provided along the space K.
And a C-shaped moving body 21 for reversing the cable 13 at 1c.

[0003] The rotating body 11 is provided with a flange 11b for movably mounting the moving body 21 thereon.

[0004] The moving body 21 moves over the upper surface 11c of the flange 11b in the circumferential direction of the space K while smoothly reversing the cable 13 through one opening end 21a or the other opening end 21b of the opening 21c. It is designed to move along.

A fixed body 12 covers a lower side of the space K and a lower cover 12b for rotatably supporting the rotating body 11.
Are integrally formed. The lower cover 12b has a through hole 12c through which a lower portion of the inner cylindrical portion 11a of the rotating body 11 passes.

The fixed body 12 is covered by a cover member 14. This cover member 14
Is integrally formed by a cylindrical portion 14a surrounding the outer cylindrical portion 12a and an upper cover 14b covering the upper side of the space K, so that it does not rotate relative to the fixed body 12. The upper cover 14b has a through hole 14c through which the upper part of the inner cylindrical portion 11a of the rotating body 11 passes.

On the upper side of the cover member 14, there is provided an external lead-out cover 110 for leading the inner peripheral end 13a of the cable 13 to the outside. The external lead-out cover 110 is connected to the rotating body 11 and rotates together with the rotating body 11.

The rotating body 11 is connected to, for example, a steering wheel side of a steering wheel of an automobile, and the fixed body 12 is fixed to a steering column side.

In the relay device 10 between the relative rotating members configured as described above, for example, the inner cylindrical portion 11a is
When rotated counterclockwise at 5, the cable 13 moves so as to wind around the inner cylindrical portion 11a. For this reason,
The cable 13 outside the moving body 21 is inverted while abutting on one opening end 21 a of the moving body 21, so that the moving body 2
1 and wraps around the inner cylindrical portion 11a. At this time, the moving body 21 has one opening end 21a pushed by the reversing portion 13c of the cable 13 and the reversing portion 13c.
It rotates counterclockwise with c.

The inner cylindrical portion 11a is connected to the outer cylindrical portion 12a.
When rotated clockwise with respect to a, the cable 13 wrapped around the inner cylindrical portion 11a is rewound and moves around. Therefore, the cable 13 wrapped around the inner cylindrical portion 11a reverses while abutting on the other open end 21b of the moving body 21, moves to the outside of the moving body 21, and further closely contacts the inner surface of the outer cylindrical portion 12a. I will be. At this time, the moving body 21 is moved to the other open end 21b.
Is pushed by the reversing portion 13c of the cable 13, and the reversing portion 1
It rotates clockwise with 3c.

The rotating body 11 rotates by the same amount in the clockwise and counterclockwise directions from the neutral position.

[0012]

By the way, in the relay device 10 between the relative rotating members, when provided on the handle portion of the vehicle as described above, the moving body 21 is affected by the vibration from the vehicle body. It will vibrate axially or radially. In particular, when the moving body 21 vibrates in the axial direction, the moving body 21 hits the upper cover 14b and generates a so-called vibration sound.

For this reason, there is a configuration in which a soundproof sheet is provided at a portion where the moving body 21 and the upper cover 14b are in contact with each other.

However, when the soundproof sheet is provided, there is a problem that the number of parts is increased and the work of attaching the soundproof sheet is newly increased, so that the cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to effectively prevent vibration noise caused by contact between a moving body and an upper cover without increasing costs. An object of the present invention is to provide a relay device between relative rotating members.

[0016]

Means for Solving the Problems To achieve the above object, the invention according to claim 1 encloses a first rotating body having an inner cylindrical portion and the inner cylindrical portion at a predetermined interval,
A second rotating body having an outer cylindrical portion that rotates relative to the inner cylindrical portion; and an inner peripheral end portion housed along an annular space between the inner cylindrical portion and the outer cylindrical portion. A flexible flat cable whose outer cylindrical end is held by the outer cylindrical portion and a movable body that is provided movably along the space and that reverses the flexible flat cable at an opening. A lower cover that covers a lower side of the space, and an upper cover that covers an upper side of the space, a relay device between relative rotating members, wherein an upper surface of the moving body is provided with an axis of the moving body. A plurality of protrusions projecting upward from at least one circumferential position at the center are provided, and the upper cover is provided with a conical slope at a position corresponding to the protrusions.

According to a second aspect of the present invention, in the first aspect of the present invention, the slope is formed such that a cross section formed in the upper cover in an annular shape is formed by a side surface of a trapezoidal groove.

According to a third aspect of the present invention, in the first aspect of the present invention, the slope is formed such that a cross-section formed in an annular shape on the upper cover is formed by a side surface of a trapezoidal ridge.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the slope is formed such that a cross-section formed in the upper cover in an annular shape is a side face of a triangular ridge.

According to a fifth aspect of the present invention, in the first, second, third or fourth aspect of the present invention, the tip of each projection is formed to be round.

[0021] Claim 1 configured as described above.
In the invention according to the above, when the moving body vibrates in the axial direction,
The projection provided on the upper surface of the moving body hits the slope of the upper cover. At this time, the tip of the projection slides along the slope,
The sound due to hitting the slope can be reduced. Also, when the moving body vibrates in the radial direction, the tip of the projection hits the slope and slides along the slope. For this reason, even when the moving body vibrates in the radial direction, it is possible to reduce the sound caused by the collision with the slope. Therefore, it is possible to effectively prevent the vibration noise caused by the contact between the moving body and the upper cover. In addition, there is no increase in new work such as attaching a soundproof sheet, so that there is no increase in cost.

In the invention according to claim 2, since the slope is formed by the side surface of the groove having a trapezoidal cross section, two slopes can be obtained at the same time. Therefore, the projections can be arranged to correspond to one slope, the projections can be arranged to the other slope, or the projections can be arranged to both slopes. Therefore, there is an advantage that the degree of freedom in design can be increased.

According to the third aspect of the present invention, since the slope is formed by the side surface of the ridge having a trapezoidal cross section, two slopes can be obtained at the same time. Therefore,
The same operation and effect as those of the invention according to claim 2 are exerted.

In the invention according to claim 4, since the slope is formed by the side surface of the ridge having a triangular cross section, the occupation ratio of the ridge in the space can be small. Therefore, the space can be effectively used.

In the invention according to claim 5, since the tip of each projection is formed round, the projection slides smoothly on the slope. Therefore, it is possible to more effectively prevent the vibration noise caused by the contact between the moving body and the upper cover.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4 show the first embodiment, FIG. 5 shows the second embodiment, FIG. 6 shows the third embodiment, FIGS. 7 to 8 show the fourth embodiment, and FIG. 9 shows the fifth embodiment. 10, FIG. 10 is the sixth embodiment, FIGS. 11 to 12 are the seventh embodiment, FIG. 13 is the eighth embodiment, and FIG.
1 shows an embodiment.

First, a first embodiment will be described with reference to FIGS. However, elements common to those of the conventional example shown in FIG. 15 are denoted by the same reference numerals, and description thereof will be simplified. The first embodiment differs from the conventional example in that a projection 21d is provided on the moving body 21 and a groove 14f is formed in the upper cover 14b.

That is, on the upper surface of the moving body 21, FIGS.
As shown in FIG. 4, a plurality of protrusions 21 d are provided to protrude upward from one circumferential position centered on the axis of the moving body 21. The position of the circumference is located near the outer periphery of the upper surface of the moving body 21. Tip 21e of each projection 21d
Is formed in a spherical shape as shown in FIG.

On the upper cover 14b, as shown in FIG.
Two conical slopes 14d and 14e are formed. These slopes 14d and 14e are formed in the upper cover 14b in such a manner that a cross section formed in an annular shape is formed by the side surface of the trapezoidal groove 14f. As shown in FIG. 2, the slope 14d located closer to the outer periphery is formed at a position corresponding to each of the protrusions 21d, and is provided at a substantially central position in the width direction at the tip 21e of each of the protrusions 21d. Has been adapted.

The gap y1 between the moving body 21 and the upper cover 14b is, as shown in FIG. 2, the tip of the projection 21d when the moving body 21 is placed on the upper surface 11c of the flange 11b of the rotating body 11. The gap y between the portion 21e and the slope 14d
It is configured to be larger than two. That is, the moving body 21 and the upper cover 14b always come into contact with each other via the projection 21d and the slope 14d, and do not come into contact with other portions.

The rotating body 11, the fixed body 12, the cover member 14, and the moving body 21 are integrally formed of resin.

In the relay device 10 between the relative rotating members configured as described above, the electric connection between the rotating steering wheel side and the vehicle body side is provided via the cable 13 by being provided on the handle portion of the automobile. It can be carried out. Then, axial movement or radial vibration acts on the moving body 21 as the automobile runs.

When the moving body 21 vibrates in the axial direction, the moving body 21 vibrates so as to jump off the flange 11b, and the projection 21d hits the slope 14d of the upper cover 14b. At this time, the tip 21e of the projection 21d
Slides along the slope 14d to reduce the sound caused by the contact with the slope 14d. In addition, even when the moving body 21 receives vibration in the radial direction, the distal end portion 21
e strikes the slope 14d and slides along the slope 14d. For this reason, even in the case of receiving the vibration in the radial direction, it is possible to reduce the sound due to the contact with the slope 14d. Therefore, the moving body 21 and the upper cover 14
Vibration noise due to contact with b can be effectively prevented. In addition, there is no increase in new work such as attaching a soundproof sheet, so that there is no increase in cost.

A groove 14f having a trapezoidal cross section is also provided.
, Two slopes 14d and 14e are obtained at the same time. Therefore, in the above embodiment, the projections 21d are arranged to correspond to one slope 14d, but the projections 21d are arranged on the other slope 14e, or the projections 21d are arranged on both slopes 14d, 14e. It can also be configured to be arranged. That is, the degree of freedom in design can be increased.

Further, since the tip 21e of each projection 21d is formed in a round shape, the projection 21d with respect to the slope 14d is formed.
Slip better. Therefore, it is possible to more effectively prevent the vibration noise caused by the contact between the moving body 21 and the upper cover 14b.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. However, elements common to the first embodiment are denoted by the same reference numerals, and description thereof will be simplified. The second embodiment is different from the first embodiment in that each projection 21d is provided at a position corresponding to the other slope 14e.

The relay device 10 between the relative rotating members thus configured also has the same operation and effect as the first embodiment.

Next, a third embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. However, elements common to the first embodiment are denoted by the same reference numerals, and description thereof will be simplified. The third embodiment differs from the first embodiment in that each projection 21d is provided at a position corresponding to one slope 14d and at a position corresponding to the other slope 14e.

In the relay device 10 between the relative rotating members configured as described above, each projection 21d and the slopes 14d, 1d
The moving body 21 can be reliably guided by 4e. Therefore, there is an advantage that the rotation of the moving body 21 is stabilized. Other operations and effects similar to those of the first embodiment are exhibited.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. However, elements common to the first embodiment are denoted by the same reference numerals, and description thereof will be simplified. The fourth embodiment is different from the first embodiment in that the slopes 14d and 14e are formed by the side surfaces of the ridge 14g.

That is, the slopes 14d and 14e are formed by the side surfaces of the ridges 14g having a trapezoidal cross section formed in an annular shape on the upper cover 14b.

In the relative rotating member relay device 10 configured as described above, the side surface of the ridge 14g causes
Two slopes 14d and 14e are obtained at the same time. Therefore, the same operation and effect as those of the first embodiment can be obtained.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. However, the same reference numerals are given to the same elements as those in the fourth embodiment, and the description will be simplified. The fifth embodiment is different from the fourth embodiment in that each projection 21d is provided at a position corresponding to the other slope 14e.

In the relay device 10 between the relative rotating members configured as described above, the same operation and effect as those of the fourth embodiment can be obtained.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
0 will be described. However, the same reference numerals are given to the same elements as those in the fourth embodiment, and the description will be simplified. The sixth embodiment differs from the fourth embodiment in that the projections 21d are provided at positions corresponding to one slope 14d and at positions corresponding to the other slope 14e.

In the relay device 10 between the relative rotating members configured as described above, each projection 21d and the slopes 14d, 1d
The moving body 21 can be reliably guided by 4e. Therefore, there is an advantage that the rotation of the moving body 21 is stabilized. Other operations and effects similar to those of the fourth embodiment are achieved.

Next, a seventh embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. However, elements common to the first embodiment are denoted by the same reference numerals, and description thereof will be simplified. The difference between the seventh embodiment and the first embodiment is that the slopes 14d and 14e have triangular projections 14.
h is formed by the side surface.

That is, each of the slopes 14d and 14e is formed by a side surface of a ridge 14h having a triangular cross section formed in an annular shape on the upper cover 14b. Also, protrusion 2
1d is arranged at a position corresponding to the slope 14d of the ridge 14h located near the outer periphery.

In the relay device between relative rotating members 10 configured as described above, for example, the slope 14d is formed by the side surface of the ridge 14h having a triangular cross section. The ratio in (K) is small. Therefore, the space (K) can be effectively used. In addition, the same operation and effect as those of the first embodiment are obtained.

Next, an eighth embodiment of the present invention will be described with reference to FIG.
3 will be described. However, the same elements as those in the seventh embodiment are denoted by the same reference numerals, and description thereof will be simplified. The eighth embodiment is different from the seventh embodiment in that each projection 21d is provided at a position corresponding to the slope 14e of the ridge 14h located closer to the inner periphery.

The relay device 10 between relative rotating members configured as described above has the same operation and effect as the seventh embodiment.

Next, a ninth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. However, the same elements as those in the seventh embodiment are denoted by the same reference numerals, and description thereof will be simplified. The ninth embodiment is different from the seventh embodiment in that each projection 21d is provided at a position corresponding to one slope 14d and at a position corresponding to the other slope 14e.

In the relay device 10 between the relative rotating members configured as described above, each projection 21d and the slopes 14d, 1d
The moving body 21 can be reliably guided by 4e. Therefore, there is an advantage that the rotation of the moving body 21 is stabilized. The other operations and effects are the same as those of the seventh embodiment.

[0054]

According to the first aspect of the present invention, when the moving body vibrates in the axial direction, the projection provided on the upper surface of the moving body hits the slope of the upper cover. At this time, the tip of the projection slides along the slope, and the sound due to the contact with the slope can be reduced. Also, when the moving body vibrates in the radial direction, the tip of the projection hits the slope and slides along the slope. For this reason, even when the moving body vibrates in the radial direction, it is possible to reduce the sound caused by the collision with the slope. Therefore, it is possible to effectively prevent the vibration noise caused by the contact between the moving body and the upper cover. In addition, there is no increase in new work such as attaching a soundproof sheet, so that there is no increase in cost.

According to the second aspect of the present invention, since the slope is formed by the side surface of the groove having a trapezoidal cross section, two slopes can be obtained at the same time. Therefore, the projections can be arranged to correspond to one slope, the projections can be arranged to the other slope, or the projections can be arranged to both slopes. Therefore, there is an advantage that the degree of freedom in design can be increased.

According to the third aspect of the present invention, since the slope is formed by the side surface of the ridge having a trapezoidal cross section, two slopes can be obtained at the same time. Therefore,
The same operation and effect as those of the invention according to claim 2 are exerted.

In the invention according to the fourth aspect, since the slope is formed by the side surface of the ridge having a triangular cross section, the occupation ratio of the ridge in the space can be reduced. Therefore, the space can be effectively used.

According to the fifth aspect of the present invention, the tip of each projection is formed round, so that the projection slides smoothly on the slope. Therefore, it is possible to more effectively prevent the vibration noise caused by the contact between the moving body and the upper cover.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a main part of a relay device between relative rotating members shown as a first embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of the relay device between relative rotating members.

FIG. 3 is a plan view showing a moving body of the relay device between relative rotating members.

FIG. 4 is a side view showing a moving body of the relay device between relative rotating members.

FIG. 5 is a half sectional view of a main part of a relay device between relative rotating members shown as a second embodiment of the present invention.

FIG. 6 is a half sectional view of a main part of a relay device between relative rotating members shown as a third embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of a main part of a relative rotary member relay device shown as a fourth embodiment of the present invention.

FIG. 8 is a sectional view of an essential part of the relay device between relative rotating members.

FIG. 9 is a half sectional view of a main part of a relay device between relative rotating members shown as a fifth embodiment of the present invention.

FIG. 10 is a partial cross-sectional view of a main part of a relative rotary member relay device shown as a sixth embodiment of the present invention.

FIG. 11 is a half sectional view of a main part of a relay device between relative rotating members shown as a seventh embodiment of the invention.

FIG. 12 is a sectional view of a main part of the relay device between relative rotating members.

FIG. 13 is a half sectional view of a main part of a relay device between relative rotating members shown as an eighth embodiment of the present invention.

FIG. 14 is a half sectional view of a main part of a relay device between relative rotating members shown as a ninth embodiment of the present invention.

FIG. 15 is an exploded perspective view of a relay device between relative rotating members shown as a conventional example.

[Explanation of symbols]

 Reference Signs List 10 relay device between relative rotating members 11 first rotating body (rotating body) 11a inner cylindrical part 12 second rotating body (fixed body) 12a outer cylindrical part 12b lower cover 13 flexible flat cable (cable) 13a inner peripheral end Part 13b outer peripheral end 13c inversion part 14b upper cover 14d slope 14e slope 14f groove 14g convex ridge 14h convex ridge 21 moving body 21a one opening end 21b the other opening end 21c opening 21d projection 21e tip K space

Claims (5)

[Claims] A first rotating member having an inner cylindrical portion; and a second rotating member having an outer cylindrical portion surrounding the inner cylindrical portion at a predetermined interval and rotating relative to the inner cylindrical portion. A rotating body, housed along an annular space between the inner cylindrical portion and the outer cylindrical portion, an inner peripheral end held by the inner cylindrical portion,
A flexible flat cable having an outer peripheral end held by the outer cylindrical portion; a movable body that is provided movably along the space, and inverts the flexible flat cable at an opening; and a lower part that covers a lower side of the space. A cover, and a relay device between relative rotating members including an upper cover that covers an upper side of the space, wherein an upper surface of the moving body has at least one circumference centered on an axis of the moving body. A plurality of protrusions projecting upward from a position are provided, and a conical slope is provided at a position corresponding to the protrusion on the upper cover. 2. The relay device between relative rotating members according to claim 1, wherein the slope has a cross section formed in the upper cover in an annular shape and formed by a side face of a trapezoidal groove. 3. The relative rotating member relay device according to claim 1, wherein the slope has a cross section formed in the upper cover in an annular shape by side surfaces of trapezoidal ridges. 4. The relay device between relative rotating members according to claim 1, wherein the slope has a cross section formed in the upper cover in an annular shape and formed by a side surface of a triangular ridge. 5. The relay device between relative rotating members according to claim 1, wherein the tip of each projection is formed round.