JPH0429995Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Application of the Invention) The present invention relates to a foldable orthogonal multi-axis deployment mechanism that expands and contracts in multiple mutually orthogonal directions by applying a driving force to one location.

(Background of the idea) For example, to install observation equipment on a rocket, artificial satellite, etc. at a certain point away from the main body of the rocket, artificial satellite, etc., or to deploy an antenna for communicating with the ground. A mechanism that expands and contracts in multiple axes is used. This telescoping mechanism is normally required to expand in multiple directions, but conventional multi-axial telescoping mechanisms were constructed by deploying independent telescoping mechanisms in different directions, so when stored Since it takes up a large amount of space and requires a drive section for each telescoping mechanism, it is unsuitable for mounting on rockets, artificial satellites, etc. that have limited space, and is particularly suitable for mounting on rockets, artificial satellites, etc. There is a need for a mechanism that has a simple configuration and expands and contracts in conjunction with each other in multiple axes.

(Purpose of the invention) The present invention has been made to meet the above requirements.

As a mechanism that expands and contracts (deploys) in one direction, the first
The telescopic and retractable tongs shown in the figure (Rage tongs:
lazytongs) are well known. To briefly explain this expansion and contraction, arms 1a and 1b of the same size.
A mechanism in which the arms 1a and 1b are crossed at the center and rotatably supported on a shaft 2 is connected to the ends of the arms 1a and 1b so as to be rotatable one after another on shafts 3a and 3b. By applying a driving force F to the tips of 1a and 1b (which may be either arm), they can be expanded and contracted.

(Embodiment of the invention) The present invention is one in which the above-mentioned telescoping and levers are directionally connected in multiple directions using a connecting mechanism.Hereinafter, an embodiment of the invention will be described with reference to FIG. 2.

A to D...Extension and contraction E...Connection mechanism section 4a, 4b...Connection body 5...Guide rail 6a to 6d...Connection arm 7a to 7d, 8a, 8b, 9a to 9d, 10
a to 10d...hinge The other symbols mentioned above are the same as in FIG. 1.

The telescoping arms A to D are the mechanisms explained in FIG. Pivotally connected for movement.

The structure of the coupling mechanism section E will be explained below.

The connecting bodies 4a and 4b are formed, for example, in a prismatic shape,
A guide rail 5 is fixed to one of the connecting bodies, for example 4b, and the guide rail 5 is slidably engaged with the other connecting body, for example 4a. , 4b change their mutual spacing while remaining parallel to each other,
It is now able to move in a straight line.

The connecting arms 6a to 6d are formed, for example, in a plate shape, and one tip portion is bent in a right angle direction to form an approximately L shape.
It has a letter shape.

Two of the connecting arms 6a to 6d, 6a and 6b and 6c and 6d, are intersected and movably connected by hinges 8a and 8b, and are mutually connected from the positions connected by the hinges 8a and 8b. A connecting arm 6 is attached to both longitudinal ends of the connecting bodies 4a and 4b by hinges 7a and 7b at positions equidistant from each other.
connecting arms 6c and 6d are rotatably supported by hinges 7c and 7d, respectively.

As described above, four telescopic levers A to D are pivotally connected to the tips of each of the connecting arms 6a to 6d of the connecting mechanism section E configured as described above by hinges 9a to 9d and 10a to 10d. . That is, the telescopic links A and C each have a hinge 9a, a 9c, 9b, and 9d, and the extendable and retractable connectors B and D are attached to the non-bent ends of the connecting arms 6a, 6b and 6c, 6d belonging to the same pair (in a direction perpendicular to the linear movement direction of the connecting bodies 4a, 4b). hinges 10a, 10b and 10
c and 10d.

Dimensions of connecting arms 6a-6d and hinges 7a-
Connecting bodies 4a, 4b and connecting arms 6a~ by 7d
The connection position of 6d is the hinge (shaft) 3a, 3b that connects each arm 1a, 1b of each telescoping member A to D.
The amount of change in the distance between them is set to be the same as the amount of change in the distance between the connecting bodies 4a and 4b. mutually identical.

Next, a method for driving the mechanism according to the embodiment to extend and retract will be explained. Although the driving part is not particularly shown, the connecting body 4
It may be a drive mechanism that changes the distance between a and 4b, or it may be a drive mechanism that controls the distance between any one of the extensions and contractions or the hinges 3a and 3b of A, for example.

For example, if a drive mechanism is used in which a driving force acts between the connecting bodies 4a and 4b, and the connecting bodies 4a and 4b are driven closer to each other, the connecting arm 6
The connecting arms a and 6d roll counterclockwise around the hinges 7a and 7d, respectively, and the connecting arms 6b and 6c roll clockwise around the hinges 7b and 7c, respectively. As a result, the hinges 9a-9c
between, between 9b and 9d, between 10a and 10b, and between 10c
-10d are each shortened, and each expansion/contraction and connection A
~D extend in the Y, X, Y', and X' directions, respectively. When the connecting bodies 4a and 4b are driven away from each other, each of the extensions and contractions and the links A to D move in the opposite direction to the direction of movement of each part, respectively.
It shrinks in the anti-X, anti-Y', and anti-X' directions. The amount of extension and contraction per pair of arms 1a, 1b of each of the above-mentioned telescoping connectors A to D are the same, and the stretching direction and the amount of contraction of the telescopic connectors A and C and the telescopic connectors B and D are the same. The reduction direction and the direction are perpendicular to each other.

In addition, although the example is a mechanism for deploying in four directions, it can also be used as a mechanism for deploying in three directions by deleting any one of the extensions and connectors A to D, or two that are orthogonal to each other may be used.
Even if it is a two-direction deployment mechanism using two extensions and contractions, for example A and B, it is still a mechanism that deploys in two axes (X-axis and Y-axis), and such a case is also within the scope of the present invention.

(Effects of the invention) As is clear from the above explanation, according to the invention, a mechanism that can expand and contract in multiple axes (up to four directions) that are perpendicular to each other by applying a driving force to one location can be obtained. Since only one drive unit is required, it can be made smaller and also requires less space when stored. Furthermore, since the operations in each direction are synchronized (the same), there is no need for special control between each direction.
The present invention is particularly effective as a device mounted on a flying object.

[Brief explanation of drawings]

Figure 1 is a diagram showing the structure of a known telescoping mechanism.
FIG. 2 is a diagram showing an embodiment of the present invention, and the meanings of main symbols are as follows. A, B, C, D... Telescopic connector, E... Connecting mechanism section, 4a, 4b... Connecting body, 6a to 6d...
connecting arm.

Claims (1)

[Scope of utility model registration request] two connecting bodies that are capable of linear movement that changes the distance between them while remaining parallel to each other, and rotatably supported at both ends of each of the two connecting bodies,
and four arms that are mutually pivotally supported on the same side end of the other connecting body and movably pivotally supported crosswise at positions equidistant from the same side end; and the four arms. The distal end extends outward from the biaxial support position of the
A folding type orthogonal multi-axis deployment mechanism in which a pair of tip portions located on the linear movement direction side of the connecting body and a pair of tip portions located on the side perpendicular to the linear movement direction are respectively pivotally connected with telescoping and levers.