JPH1032071A - Rotary dividing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating mechanism which can rotate at a certain angle relative to a stationary part without requiring a rotary part to have any contact terminal moving and which does not cause deterioration of a harness resulting from the rotation of the rotary part. SOLUTION: A rotary part 1 is coupled with a rotor 2 through a bearing, and the rotor 2 is coupled with a stationary part 3 through a bearing. Harnesses 6 and 7 are set over between the rotary part 1 and rotor 2 and between rotor 2 and the stationary part 3 so that the parts 1 and 3 are connected together electrically. A projection 8 on the periphery of the rotary part 1, projections 9a and 9b on the bore and periphery of the rotor 2, and a projection 10 on the bore of the stationary part 3 are furnished so that the harnesses are not pulled excessively. No stress will be applied to the harness 6 while the rotary part 1 remains rotatable relative to the rotor 2. In the same manner no stress is applied to the harness 7 while the rotor 2 can make rotation relative to the stationary part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for routing a harness between a rotating part and a fixed part, and more particularly to a mechanism for housing a harness therein.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 1-298394 discloses a conventional display turntable mechanism. FIG.
FIG. 4 is a perspective view of the conventional display turntable mechanism, FIG.
FIG. 5 is a sectional view taken along line AA of FIG. 3, and FIG.
It is a B sectional view.

In FIG. 4, a joint cup 21 is
It serves as a rotation axis, and its upper surface is fixed to the tray 22. The contact terminal 24 is attached to the bottom of the tray 22 so as to always contact a doughnut-shaped metal contact terminal 25 attached to the upper surface of the fixed base 23 about the rotation axis as shown in FIG. The power supply 26 is housed in the fixed base 23, and is connected to the fixed base 23 by a power cable 27.
Is connected to the contact terminal 24 on the tray 22 via a contact terminal 25 attached to the tray 22. Therefore, in FIG. 4, when the tray 22 is rotated, the tray 22 contacts the doughnut-shaped contact terminal 25 mounted on the fixed base 23.
The contact terminal 24 attached to the side always moves while making contact. That is, the connection between the receiving tray 22 and the fixed base 23 is made indirect connection by the contact terminals 24 and 25 and the like, and the receiving pan 22 can be rotated with respect to the fixed base 23.

[0004]

In the prior art, contact terminals are used for electrical connection between the rotating part and the fixed part, so that friction always occurs during rotation. The prior art has a drawback that it has a low evaluation in terms of reliability and life and cannot be applied to products that cannot be replaced, such as satellite-mounted products.

Therefore, the present invention improves on the disadvantages of the prior art described above, in which the rotating portion can be rotated by a considerable angle with respect to the fixed portion without having a moving contact terminal, and the rotating portion can be rotated. An object of the present invention is to propose a rotation mechanism that does not deteriorate the harness due to rotation.

[0006]

SUMMARY OF THE INVENTION According to the present invention, by introducing a rotating body between a rotating part and a fixed part, the rotating body can be rotated relative to the harness, and can be moved relative to the harness. It is divided into rotation that does not move relatively,
The following configuration is adopted.

(1) In a rotating mechanism having a harness between a rotating part and a fixed part, a rotating body disposed concentrically between the rotating part and the fixed part, and a rotating body between the rotating part and the rotating body. The harness and the bearing provided between the rotating body and the fixed part, and the relative rotation between the rotating part and the rotating body and between the rotating body and the fixed part are stressed on the harness. And a means for restricting the rotation of the rotation.

(2) The means comprises a projection provided on an outer peripheral surface of the rotating portion, a projection provided on an inner peripheral surface and an outer peripheral surface of the rotating body, and an inner peripheral surface of the fixed portion. The rotation dividing mechanism according to the above (1), comprising a projection provided.

(3) The rotation dividing mechanism according to the above (1), wherein a plurality of the rotating bodies are stacked concentrically.

[0010]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view of an embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. The rotating unit 1 is connected to the rotating body 2 via a bearing 4, and the rotating unit 1 can rotate with respect to the rotating body 2. Similarly, the rotating body 2 is coupled to the fixed part 3 via the bearing 5, and the rotating body 2 can rotate with respect to the fixed part 3. Journal ball bearings are used for the bearings 4 and 5. Further, between the rotating unit 1 and the rotating body 2,
Further, harnesses 6 and 7 are bridged between the rotating body 2 and the fixed part 3 so that the rotating part 1 and the fixed part 3 can be electrically connected. One protrusion 8 is provided on the outer peripheral surface of the rotating unit 1, two protrusions 9 a are provided on the inner peripheral surface of the rotating body 2 symmetrically about the center, and one outer projection is provided on the outer peripheral surface of the rotating body 2. Protrusion 9
b, and two projections 10 are provided on the inner peripheral surface of the fixed portion 3 symmetrically about the center.

Until the projection 8 of the rotating section 1 hits the projection 9a of the rotating body 2, the rotating section 1 can rotate independently with respect to the rotating body 2. After that, the rotating unit 1 rotates with respect to the fixed unit 3 together with the rotating body 2. When the projection 9b of the rotating body 2 hits the projection 10 of the fixed section 3, the rotating section 1 and the rotating body 2 stop. The projections 8, 9a, 9b, and 10 are provided to prevent the harnesses 6, 7 from being pulled more than a predetermined amount. 6 is designed not to be stressed. Similarly, the harness 7 is designed so that stress is not applied to the harness 7 while the rotating body 2 can rotate with respect to the fixed portion 3. Therefore, if a plurality of rotators 2 are concentrically layered according to the required rotation angle, the rotator 1 ensures sufficient rotation with respect to the fixed portion 3 without applying stress to the harnesses 6 and 7. .

Needless to say, the rotating section 1 can rotate in either the left or right direction with respect to the fixed section 3.

[0013]

As described above, according to the present invention, a structure having a rotating part and a fixed part which need to be electrically connected can be rotated at a sufficient angle without a contact terminal to which the rotating part moves. The harness can be arranged so that Therefore, the deterioration of the harness due to the rotation of the rotating portion is smaller than that of the related art, and a highly reliable harness rotation mechanism can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a conventional technique.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating part 2 Rotating body 3 Fixed part 4,5 Bearing 6,7 Harness 8,9a, 9b, 10 Projection

Claims (3)

[Claims] 1. A rotating mechanism having a harness between a rotating part and a fixed part, wherein a rotating body disposed concentrically between the rotating part and the fixed part, and a rotating body between the rotating part and the rotating body. The harness and the bearing respectively provided between the rotating body and the fixed portion, and the relative rotation between the rotating portion and the rotating body and between the rotating body and the fixed portion are subjected to stress on the harness. And a means for restricting the rotation. 2. The apparatus according to claim 1, wherein the means is provided on a projection provided on an outer peripheral surface of the rotating portion, a projection provided on an inner peripheral surface and an outer peripheral surface of the rotating body, and on an inner peripheral surface of the fixed portion. 2. The rotation dividing mechanism according to claim 1, wherein the rotation dividing mechanism comprises a projection. 3. The rotation dividing mechanism according to claim 1, wherein a plurality of said rotating bodies are concentrically layered.