JPS6356390B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a redundant drive hinge used in a backup mechanism of an opening/closing drive mechanism of an automatic opening/closing door that is difficult to maintain and inspect, or in a deploying mechanism of space equipment that requires high reliability, for example.

Generally, the mechanism shown in FIG. 1 is used as a mechanism having a drive mechanism in the opening/closing hinge. In FIG. 1, 1 is a drive section, and 2 is a speed reduction mechanism section. The drive section 1 and the speed reduction mechanism section 2 are connected, one end of the speed reduction mechanism section 2 is connected to the drive section 1, and the other end of the speed reduction mechanism section 2 is inserted into the mounting plate 3. A collar 2a is provided on the deceleration mechanism section 2 on the outside of the mounting plate 3 (upper side in FIG. 1), and this collar 2a prevents the deceleration mechanism section 2 from moving downward in FIG. It is designed to be fixed to the mounting plate 3.

The mounting plate 3 is fixed to the expanding section 4. A shaft 5 is rotatably supported on the inner peripheral surface of the mounting plate 3 via a ball bearing 6. A shaft 2b of the reduction mechanism section 2 is connected to the center of the shaft 5. axis 2b
is connected to the lower end of the speed reduction mechanism section 2 on the lower side of the mounting plate 3 in FIG. Furthermore, the unfolding section 7 is fixed to the rotating shaft 5. In other words, the expanding section 7 and the rotating shaft 5 are integrated, and the expanding section 4 and the mounting plate 3 are integrated.

When the hinge has two drive sources, the first
At the bottom of the figure, as shown by imaginary lines, a drive section and a deceleration mechanism section are provided, respectively, and "1" is attached to the reference numerals of the parts corresponding to the upper drive section and the deceleration mechanism section. That is, the drive section 11, the reduction mechanism section 12, the collar 12a, the shaft 12b, the mounting plate 1
3. A rotating shaft 15 and a ball bearing 16 are provided in exactly the same manner as above.

The operation of the conventional drive mechanism configured in this way will be explained. For convenience of explanation, the upper part will be described as an example. The driving force of the drive unit 1 rotates the rotating shaft 5 via the deceleration mechanism unit 2,
A deploying section 7 integrated with this rotating shaft 5 performs a deploying operation.

In this case, if a malfunction occurs in the drive section 1 or the speed reduction mechanism section 2, the original operation will not be possible. That is, if another drive section 11 and deceleration mechanism section 12 provided below in FIG. Let us consider a case where the deploying section 7 is attempted to be deployed by the driving section 11 and the deceleration mechanism section 12 in the event of a malfunction.

In this case, the driving force of the drive unit 11 is directly affected by the load due to the malfunction of the drive unit 1 and the speed reduction mechanism unit 2. Therefore, if a malfunction occurs in the drive section 1 and the deceleration mechanism section 2, the deployment operation cannot be performed regardless of whether the drive section 11 and the deceleration mechanism section 12 are provided or not. It will not have a backup function.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology. Two types of drive mechanisms are provided on the hinge, and even if one drive mechanism malfunctions, the other drive mechanism will be activated regardless of the malfunction. It is an object of the present invention to provide a redundant drive hinge that can perform an unfolding operation by operating a mechanism.

Embodiments of the redundant drive hinge of the present invention will be described below with reference to the drawings. FIG. 2 is a sectional view showing the configuration of one embodiment. In FIG. 2, the first drive section 21 is connected to a first reduction gear 22. As shown in FIG. A rotating shaft 22a of the first reduction gear 22 is connected to a first shaft 23. The first shaft 23 is the rotation shaft 22
It is formed with a larger diameter than a, and has a rotating shaft 2 in its center.
2a are connected. The first reducer 22 is provided with a collar 22b, and this collar 22b is connected to the first reducer 22.
It is locked to the outer surface (upper side in FIG. 2) of the retainer 24,
The first reduction gear 22 and its rotating shaft 22a pass through this first holding member 24. In other words, the first reducer 22 and the rotating shaft 22a pass through the first retainer 24, but the axial movement is restricted by the collar 22b, and the first reducer 22 is fixed to the first retainer 24. be done.

The first holding member 24 is fixed to the expanding portion 25. Further, the first holding member 24 is rotatably supported on the inner circumferential surface of the first holding member 24 via a ball bearing 26 on the first shaft 23 (rotation in the direction of arrow _A1 ).
A deployable portion 28 is supported on the outer peripheral surface of the first shaft 23 via a ball bearing 27. Thus, the rotational force of the first shaft 23 in the direction of arrow _A1 exerts a deploying action on the deploying portions 25 and 28.

One end of a hollow connecting shaft 29 is connected to one end (lower surface) of the first shaft 23, and the other end of this connecting shaft 29 is connected to one end of a second shaft 30 (upper surface in FIG. 2). There is. The lower part in FIG. 2 constitutes a redundant system, and is constructed in the same manner as the upper hinge system.

That is, the expanding portion 25 is supported on the outer circumferential surface of the second shaft 30 via a ball bearing 31, and in the same way, a second holding member 33 is supported via a ball bearing 32. First retainer 2
4 and this second restraint fitting 33 are both expanded part 2
5 and 28, and a second reduction gear 34 is passed through this second holding member 33. Second
The collar 34b of the speed reducer 34 is locked to the outer circumferential surface of the second holding member 33b, and movement in the axial direction is suppressed. The rotating shaft 34a of the second reducer 34 is the second shaft 30
is connected to the center of the In addition, the second reducer 3
4 is connected to a first drive section 35.

The first drive unit 21 and the second reducer 22 or the second drive unit 35 and the second reducer 34 are operated from the output shaft side by the deceleration efficiency and the holding torque of a step motor (not shown) used as a drive source. The mechanism is not easy to rotate.

Next, the operation of the redundant drive hinge of the present invention configured as described above will be explained. Now, for example, when a driving force is applied by the first drive unit 21, this driving force is applied to the rotating shaft 22a of the first reduction gear 22.
is transmitted to the first shaft 23 via. This results in
At the same time as the first shaft 23 rotates, the connecting shaft 29 connected thereto rotates in the direction of arrow _A1 .

Further, a second shaft 30 connected to the connecting shaft 29
This rotational force is transmitted to the second shaft 30 as well, and the second shaft 30 also
A Rotates in _one direction. At this time, as mentioned above,
The output shaft side of the second reducer 34, that is, the rotating shaft 3
Rotation from the 4a side has a large load, and rotation of the second shaft 30 causes the second drive unit 35 and the second reduction gear 34 to rotate integrally. That is, when the second reduction gear 34 is rotated by the second shaft 30, the second presser 33 is rotated, and the expanding portion 28 fixed thereto is rotated. Therefore, the deploying section 28 has rotated with respect to the deploying section 25, and has a deploying function. In this case, the ball bearings 26 and 31 are used in an activated state.

Next, a case where some kind of malfunction occurs in the first drive unit 21 or the second reduction gear 22 will be described.
In this case, the driving force of the second drive unit 35 and the second reducer 34 is connected to the connecting shaft 29 via the rotating shaft 34a and the second shaft 30, and this connecting shaft 29 is moved in the direction of arrow _A2 , contrary to the above. Rotate to . Then, the rotational force of the connecting shaft 29 is transmitted to the first shaft 23, and this first shaft 23
is also rotated. Due to the rotation of the first shaft 23, the first reducer 22 and the first drive unit 21 connected thereto
will also be rotated as one unit.

The rotation of the first reduction gear 22 is transmitted to the drive section 25 via the first restraint fitting 24, and the expansion section 25 is rotated. Since the second drive part 35 and the second reducer 34 are on the deployment part 28 via the second restraint fitting 33, the driving force of the second drive part 35 and the second reduction gear 34 is applied to the deployment parts 25 and 28. It will be developed between. In this case, the ball bearings 32 and 27 will be used in an activated state.

As described above, according to the redundant drive hinge of the present invention, the first and second drive parts are provided for transmitting driving force to the two expanding parts that perform hinge operation, and the first and second drive parts are connected to the connecting shaft. When the first drive section is in operation, the rotational force is transmitted to the second drive section through the connection shaft, and the second drive section causes one of the deployment sections to perform the deployment operation, and the second drive section During operation, the rotational force is transmitted to the first drive part via the connecting shaft to cause the other deployment part to perform the deployment operation, so even if a malfunction occurs in one drive part, the other drive part will not be affected. Deployment drive can be independently applied to the deploying section without any influence. Therefore, the drive unit can have a redundant system in the deployment mechanism.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of a conventional unfolding mechanism, and FIG. 2 is a sectional view showing the configuration of an embodiment of the redundant drive hinge of the present invention. 21...first drive section, 22...first reduction gear, 2
2a, 34a... Rotating axis, 23... First axis, 24
...First retainer, 25, 28...Development part, 26,
27, 31, 32...Ball bearing, 29...
...Connection shaft, 30...Second shaft, 33...Second restraint fitting, 34...Second speed reducer, 35...Second drive unit.

Claims (1)

[Claims] 1. Two deployment sections that perform deployment operations independently of each other, a first drive means and a second drive means that are supported by these two deployment sections and respectively apply deployment motion to one of the deployment sections, and this first drive. The drive means is connected between the first drive means and the second drive means, and when a malfunction occurs in either the first drive means or the second drive means, the driving force of the normal drive means is transferred to the drive means in which the malfunction has occurred. A redundant drive hinge comprising a connecting shaft that transmits a signal to one of the two deployable sections to perform a deploying operation.