JPH0143670Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a gimbal device that supports a magnetic detector movably in two axes for detecting various magnetic changes, such as on the ocean floor, and positions the detector in a predetermined direction.

The conventional two-axis gimbal device is shown in Figures 1 and 2.
As shown in the figure, there is a gimbal frame b inside the main body frame a.
is supported by a main body frame a by a pivot c, and a cylindrical gimbal e having a weight d on a gimbal frame b (usually a magnetic detector is provided in the gimbal) is rotated by a pin f at approximately the center. A pair of clamp discs g are movably supported inside the main body frame a.
is installed, and a rubber plate h is pasted on one side of the clamp disc g, which faces each other. Both clamp discs g are moved apart, and the gimbal e is freely rotated around the pin f, and the weight d is The action causes the gimbal e to be positioned vertically (see FIG. 1) and to move both clamp disks g close to each other so that the gimbal e is brought into so-called line contact with the rubber plate g and held under pressure.

However, in the conventional device described above, since the rubber plate h is attached to the clamp disk g with an adhesive, an adhesion process is required and the adhesion work is extremely troublesome.

Moreover, when the angle of inclination of the gimbal e with respect to the main body frame a is large, the weight d is moved to the rubber plate h in the middle of clamping when the clamp disc g is moved close.
Due to the large frictional resistance of the rubber, the gimbal e did not rotate smoothly when it came into contact with the gimbal e, and the clamping work was time-consuming.

In view of the above points, this idea was developed by attaching a ring-shaped elastic body to the upper and lower ends of the outer peripheral side of the gimbal via a circumferential groove, and by omitting the conventional rubber plate, it simplifies the assembly work. It is an object of the present invention to provide a gimbal device in which a weight is brought into direct contact with a clamp disk during clamping work so that the gimbal smoothly rotates, and the work can be performed quickly and reliably.

This invention will be explained in detail below with reference to embodiments shown in the drawings.

As shown in Figures 3 to 6, 1 is a two-axis gimbal device that detects magnetic direction etc. on the seabed. It is equipped with a plate 5.

The main body frame 2 is formed by having side plates 2a fixed at both upper and lower ends by support columns 2b. Although not shown in the drawings, the gimbal frame 3 of the main body frame 2 is housed in a cylindrical case, and is formed into a short, substantially rectangular tube shape, and both sides are attached to the side plates 2a by pivots 6. It is located approximately at the center of the main body frame 2.

The gimbal 4 is equipped with a coil (not shown) etc. in a sealable cylindrical case 4a.
A metal weight 4b is attached to the lower part of the gimbal frame 3, passing through the gimbal frame 3, and rotatably supported on the gimbal frame 3 by a pin 7 extending perpendicularly to the pivot shaft 6 at approximately the middle.

Furthermore, a circumferential groove 4c having a U-shaped cross section is formed at both upper and lower ends of the outer peripheral side surface of the case 4a, and an O-ring 4d (elastic body) is attached to the circumferential groove 4c. The O-ring 4d is made of rubber and has elasticity, and is slightly protruded from the outer peripheral side of the case 4a.

The clamp disk 5 is a metal product, and is provided on both sides of the gimbal 4 so as to be movable toward and away from the axis 6, and holds the gimbal 4 under pressure.

Next, to explain the clamping operation, the fifth
As shown in the figure, in the unclamped state in which both clamp discs 5 are moved apart, the gimbal 4 is free to rotate around the pin 7, and regardless of the inclination angle of the main body frame 2, the gimbal 4 is free to rotate due to the action of the weight 4b. It will be located vertically.

From this state, when both clamp disks 5 are moved close to each other toward the center using a clamp mechanism or the like,
First, the write 4b comes into direct contact with the clamp disk 5, and the gimbal 4 enters a clamping operation.
At this time, since both the weight 4b and the clamp disk 5 are made of metal, the frictional resistance is small, and the gimbal 4 rotates smoothly.

Subsequently, when both clamp disks 5 are moved close together, the gimbal 4 gradually rotates and is held between both clamp disks 5 from both sides to be in a clamped state, as shown in FIG. At this time, the O-ring 4d comes into so-called point contact with the clamp disk 5 and is deformed by a slight lateral pressure, so that the gimbal 4 is securely fixed. Even when rotated, the frictional force between the O-ring 4d and the clamp disc 5 ensures that the clamp does not move and is fixed securely.

In the above embodiment, the circumferential groove 4c has a U-shaped cross section, but it may have various shapes such as a U-shaped groove.On the other hand, in the O-ring 4d, the cross-sectional shape may be a circle, an ellipse, a rectangle, etc. It goes without saying that it may have various shapes, and is not limited to rubber products, and may be made of various elastic bodies having elasticity.

As described above, according to this invention, an elastic body is attached to both the upper and lower ends of the outer peripheral side of the gimbal via a circumferential groove, and the gimbal is fixed using the frictional force and elasticity of this elastic body. Since there is no need to attach a rubber plate to the clamp disk as in the conventional case, the step of adhering the rubber plate and the adhesion work can be omitted, making the assembly work extremely simple. Furthermore, during clamping operations, the weight comes into direct contact with the clamp disk, reducing the frictional resistance between the two, allowing the gimbal to rotate very smoothly, allowing clamping operations to be performed quickly and reliably. It is something.

[Brief explanation of the drawing]

Figures 1 and 2 show conventional examples.
The figure is a front view of the two-axis gimbal device showing the clamped state, FIG. 2 is the same front view showing the clamped state,
Figures 3 to 6 show an embodiment of this invention, with Figure 3 being a front view of the gimbal, Figure 4 being a partially omitted plan view of the two-axis gimbal device, and Figure 5 showing the clamp being released. A front view of a two-axis gimbal device shown;
FIG. 6 is a front view showing the clamped state. 1... 2-axis gimbal device, 2... Main body frame, 2a
...Side plate, 2b...Strut, 3...Gimbal frame, 4
... Gimbal, 4a ... Case, 4b ... Weight, 4c ... Circumferential groove, 4d ... O-ring, 5 ...
Clamp disk, 6... pivot, 7... pin.

Claims (1)

[Scope of utility model registration request] A gimbal frame is supported by the main body frame by a pivot inside the main body frame, and the gimbal is rotatably supported in the vertical direction by the gimbal frame. A circumferential groove is formed at both upper and lower ends of the gimbal, and a ring-shaped elastic body is attached to the circumferential groove, while a pair of clamp plates are provided inside the main body frame and move toward and away from each other at positions on both sides of the gimbal. 1. A gimbal device, wherein the gimbal device is freely installed, and the clamp plates clamp and hold the gimbal via the ring-shaped elastic body.