JPS6332420Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a joint device, and more particularly to a joint device suitable for transmitting the rotational force of a drive device such as a motor to another device such as a pump.

(Prior Art) Conventionally, as this type of joint device, there is Utility Model Registration No. 1169820 (Japanese Utility Model Publication No. 51-27390). That is, FIG. 1 shows the above-mentioned joint device. According to this joint device, even if there is a step between the driving shaft and the driven shaft, the driving side member A and the driven side member B can be connected by the braided wire 6. Since they are connected with each other, there is an advantage that rotation can be transmitted easily and smoothly with a simple structure.

However, since the members A and B are simply connected by the braided wire 6 to transmit rotational force, a load is placed on the braided wire 6 when transmitting the rotational force, and therefore, for example, when used for a long time or when the rotational torque is large, etc., there is a risk that the braided wire 6 may be cut, and as a result, there is a drawback that rotational force cannot be transmitted.

Furthermore, the braided wire 6 may expand or contract depending on the usage environment, such as when used in a place with high temperatures, and there is also a drawback that rotation cannot be transmitted with high accuracy.

(Purpose of the invention) This invention was proposed in view of the above points,
The purpose is to provide a joint device that reduces the burden on the braided wire when the driven side is under heavy load and improves rotation transmission accuracy.

(Structure of the idea) The present invention will be explained below with reference to the drawings.

FIGS. 2 and 3 show an embodiment of the present invention, and in these figures, A is one rotation transmitting member, and B is the other rotation transmitting member. One rotation transmission member A is a drive shaft 2 of a drive device 1 such as a motor.
A cylindrical collar 3 fixed to
It consists of a plate-shaped part 4 which is protruded in a ring shape from the outer circumferential surface of the ring. The other rotation transmission member B is attached with a driven shaft 2' of a rotating device 1' such as a pump,
It is formed from a collar 3' that is movable in the axial direction and a plate-shaped portion 4' that projects in a ring shape from the outer peripheral surface of the collar 3'. Also, rotation transmission member A,
Holes 7 and 7' for shaft insertion are bored in the center of the shaft-side end surface of B, respectively.

5 and 5' are parallel to the axial direction on the same circumference at the outer periphery of the rotation transmission members A and B plate-like parts 4 and 4',
The holes are equally spaced.

Reference numeral 6 denotes a braided wire formed from an elastic body made of metal wire or synthetic resin thread, and includes a hole 5 provided in the plate-like part 4 on the driving side and a hole 5 provided in the plate-like part 4' on the driven side. The starting end and ending end are connected through all the holes.

In addition, the center hole 7 for inserting the shaft of the plate-like parts 4, 4',
7' and the holes 5, 5' on the outer periphery of the plate are annular gears 8, 8' that are substantially concentric with the holes 7, 7', protrude inwardly, and can mesh with each other. It is integrated into the shaped portions 4, 4'.

Therefore, when the rotational force is not transmitted during use, as shown in FIG. In this case, the gear parts 8 and 8' are not meshed at all. Next, when the driven side becomes a heavy load and the plate-shaped part 4 connected to the drive shaft 2 rotates, the braided wire 6 is gradually pulled in the direction of rotation, so that the relative The distance between the facing plate parts 4, 4' decreases, and the gear parts 8, 8' mesh with each other. Therefore, the rotational force of the drive device 1 is configured to be transmitted to the rotating device 1' such as a pump via the braided wire 6 stretched between the plate parts 4 and 4' and the gear parts 8 and 8'. has been done. Furthermore, when the operation of the drive device 1 is stopped, the rotation transmission members A and B return to their original separated and opposed state due to the elastic restoring force of the braided wire 6, as shown in FIG. It's summery.

(Effect of the invention) According to the invention configured as described above,
Since the transmission of rotational force is distributed between the braided wire 6 and the gear parts 8 and 8', when the rotational force is transmitted by simply connecting the plate parts 4 and 4' with the braided wire 6, In comparison, there is an effect that the load applied to the braided wire 6 can be reduced.

In addition, in addition to the braided wire 6, the gear parts 8 and 8' mesh to transmit rotational force, so the rotation of one plate member 4 is reliably transmitted to the other plate member 4'. This has the effect of improving the transmission accuracy of rotational force.

[Brief explanation of the drawing]

FIG. 1 is a conventional example, FIGS. 2A and 2B are side views of the present invention, C is a front view of one of the plate-like members in the present invention, and FIG. 3 is an explanatory view showing the state of use. 4, 4'...plate-shaped part, 8, 8'...gear part.

Claims (1)

[Scope of utility model registration request] one rotation transmission member provided on the drive source side;
In a joint device in which one rotation transmission member and another rotation transmission member disposed facing each other and provided on the driven side are connected by a braided wire, one of the rotation transmission members can be moved back and forth in the axial direction. What is claimed is: 1. A joint device that is attached to a rotation transmitting member and has gear portions that can mesh with each other on opposing surfaces of each rotation transmitting member.