JPS6336170Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coupling device, which has been improved so that opposing shafts can be easily connected.

FIG. 1 is a diagram showing an engine testing apparatus, and in the figure, reference numeral 1 indicates an engine to be tested, which is fixed via an engine fixing device 3 that can be fixed at any position on a floor 2. That is, the engine fixing device 3 is movable in the axial direction of the shaft 16,
After positioning to a predetermined position, it is fixed at that position. Reference numeral 4 denotes a dynamometer, which includes a bed 4a fixed to the floor 2, a main body 4c supported via a swing bearing 4b, and a scale 4d. The output of the engine 1 is then transmitted to the shaft 4e of the dynamometer 4 via the shaft 1b of the temporary clutch 1a for testing, the coupling 5, the propeller shaft 6, and the coupling 7.
transmitted to. By this, the power of the engine 1 displayed on the scale 4d is measured. The temporary clutch 1b has the same structure as a general clutch, and is used to connect and disconnect power transmission during testing.

At this time, since it is necessary to replace the engine 1 one after another and perform the test, the coupling 7 may remain connected, but the coupling 5 must be repeatedly attached and detached for each test. However, in the conventional coupling ring 5, the flange portion 1c of the shaft 1b and the flange portion 6a of the propeller shaft 6 are butted together and fastened with bolts (not shown), which not only complicates the attachment/detachment operation but also makes the operation more difficult. Bolts and nuts may be lost during the process.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, an object of the present invention is to provide a coupling device that can easily connect shafts without using bolts or nuts. The present invention achieves this object by fitting a torque pin protruding from the flange of one shaft into a recess carved into the flange of the other shaft, thereby connecting the two shafts, and using a bayonet clamp to prevent axial movement. The basis of its technical philosophy is that it is regulated.

Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIGS. 2a and 2b, in this embodiment, a disk with a slightly larger diameter is fixed to the flange portion 10a on the end face of the shaft 10, which is the propeller shaft, to form a new flange portion 10b. are doing. A plurality of torque pins 12 protruding from the surface of the flange portion 10b and fixed with nuts 11 are disposed in the circumferential direction of the flange portion 10b. On the other hand, in this embodiment, the torque pin 12 is attached to the surface of the flange portion 13b on the end face of the shaft 13a which is the output shaft of the temporary clutch 13 similar to the conventional one.
A plurality of recesses 13c into which the recesses 13c are inserted are arranged circumferentially. The bayonet clamp 14 is
A circumferential surface 14c surrounding both the flange portions 10b and 13b, a surface 14d that spreads from one end of the circumferential surface 14c toward the axis and abuts the back surface of the flange portion 10b, and a surface 14d that abuts the back surface of the flange portion 13b. It has a claw portion 14b extending toward the axis from the other end side of the peripheral surface 14c so as to be in contact with it. The claw portions 14b are formed at four locations in the circumferential direction. Further, a long hole 14a into which the nut 11 is inserted is bored in the surface 14d. On the other hand, the circumferential surface of the flange portion 13b has a cutout portion that allows the claw portion 14b to pass through during axial movement, and a cutout portion that protrudes relatively adjacent to the cutout portion so that the claw portion 14b comes into contact with the cutout portion. A protrusion 13e is formed that restricts axial movement when the protrusion 13e comes into contact with the protrusion 13e. That is, the protrusion 1
By abutting the claw portion 14b on the bayonet clamp 3e, movement of the bayonet clamp 14 in the right direction in FIG. 2a is restricted.

FIGS. 3a and 3b are explanatory diagrams conceptually showing the positional relationship between the bayonet clamp 14 and the flange portion 13a. In FIG. 3a, the claw part 14b is the notch part 13.
d in the axial direction, Fig. 3b
1 and 2 respectively show the clamped state of axial movement by the bayonet clamp 14. As shown in FIG. 3a, when the claw portion 14b and the notch portion 13d are moved in the axial direction while facing each other, the claw portion 14b passes through the notch portion 13e. This allows the torque pin 12 to be inserted into the recess 13c. Further, in this state, when the bayonet clamp 14 is rotated counterclockwise as shown in FIG. 3b, the claw portion 14b and the projection portion 13e can be made to face each other. This allows the claw portion 14b to
e, and axial movement of the bayonet clamp 14 is restricted.

Place the bayonet clamp 1 in the position shown in Figure 3b.
4 is locked by a detent. That is, as shown in FIG. 2c when this portion is extracted and enlarged, this rotation stopper consists of a rod portion 15, a spring 16, and cylindrical members 17 and 18. Of these, cylindrical member 17
The cylindrical member 18 has a male threaded portion formed on its outer circumferential surface screwed into a male threaded portion of a hole protruding from the surface 14d of the bayonet clamp 14, and the cylindrical member 18 has a female threaded portion formed on its inner circumferential surface. The bayonet clamp 14 is fixed to the bayonet clamp 14 and the cylindrical member 17 by being screwed into a male thread formed on the outer peripheral surface of the cylindrical member 17. The rod portion 15 passes through the cylindrical members 17 and 18 so that its tip can be inserted into a recess 10c carved on the back surface of the flange portion 10b, so that the claw portion 14b faces oppositely to the protrusion 13e. It is locked to the flange portion 10b at this position. At this time, the bayonet clamp 14 of the rod portion 15
Four protrusions 15a are disposed in the circumferential direction at the base end protruding from the flange part 10b to the opposite side, and the rod part 15 can be pulled out against the spring force of the spring 16. By rotating it in either the left or right direction, the engagement between the rod portion 15 and the recessed portion 10c can be maintained in a disengaged state. More specifically, there is a washer 15b in the center of the rod portion 15.
is fixed, and this washer 15b and the cylindrical part 1
A spring 16 is housed between a washer interposed between 7 and 18, and this spring 1
6, the rod portion 15 is pressed to the left in the figure.
Further, the protruding portion 15a can be inserted into a groove carved in the inner circumferential surface of the cylindrical portion in the axial direction. That is, from the state shown in the figure, the rod part 15 is pulled to the right in the figure against the spring force of the spring 16, and when the protrusion part 15a comes out of the groove in which it was inserted, it will move one inch to the left or right. When the bayonet clamp 14 is rotated, the clamp of the bayonet clamp 14 is released, and from this state, the rod portion 15 is further rotated and the protrusion 15a is removed.
If you place the rod part 15 facing the groove and release your hand, the rod part 15 will be removed.
is moved leftward in the figure by the spring 16, and the tip end is fitted into the recess 10c, so that the flange portion 10b of the bayonet clamp 14,
Rotation relative to 13b is clamped.

The functions of this embodiment will be systematically explained together with the manner in which they are connected. First, the torque pin 12 is inserted into the recess 13c at a position where the claw 14b of the bayonet clamp 14 faces the notch 13d of the flange 13b. At this time, the detent 15 is pulled out from the bayonet clamp 14, leaving the bayonet clamp 14 free to rotate. Thereafter, the bayonet clamp 14 is rotated so that the claw portion 14b and the protrusion portion 13e face each other, and at that position, the rod portion 15 is inserted into the recess portion 10c of the flange portion 10b. As a result, the rotation of the bayonet clamp 14 is locked and the shaft 1
Since separation in the axial direction of 0 and 13 is regulated by engagement between the claw portion 14b and the protrusion 13e, the rotational force of the shaft 13 is transmitted to the shaft 10 via the torque pin 12. Incidentally, generally shaft 1
0 and 13 have some play so that they can move in the axial direction, so in order to properly transmit the rotational force by the torque pin 12, the flange parts 10b and 13b are
must fit snugly together. The bayonet clamp 14 ensures this.

As specifically explained above with the examples,
According to the present invention, a torque pin protruding from the flange of one shaft is fitted into a recess carved into the flange of the other shaft to connect the two, and movement in the axial direction is restricted by a bayonet clamp. Therefore, the shafts can be easily connected to each other without using bolts or nuts, and the time required for attaching and detaching the shafts can be dramatically shortened.

[Brief explanation of the drawing]

Figure 1 is an overall view of the engine test equipment, Figure 2
Figure a is a vertical sectional view showing an embodiment of the present invention, Figure 2 b
2 is a right side view of FIG. 2 a with the lower half extracted, FIG. 2 c is an enlarged cross-sectional view showing the rotation preventing portion, and FIGS. 3 a and b are the flange portion 13b and the claw of the bayonet clamp 14. It is an explanatory view for explaining the positional relationship of part 14b. In the drawing, 10, 13a are shafts, 10b, 1
3b is a flange portion, 10c and 13c are recessed portions, 12
13d is a torque pin, 13d is a notch, 13e is a projection, 14 is a bayonet clamp, 14b is a claw, and 15 is a rotation stopper.

Claims (1)

[Scope of utility model registration request] A plurality of torque pins protruding from the surface of the flange portion on the end face of one shaft and disposed circumferentially on the flange portion are carved in multiple pieces on the surface of the flange portion on the end face of the other shaft in the circumferential direction. In a coupling device that connects both shafts by inserting the surfaces of the flanges into opposing recesses, a circumferential surface surrounding the circumferential surfaces of the flanges, and a shaft extending from one end of the circumferential surface. A biomedical device having a surface extending toward the center and abutting the back surface of one flange portion, and a claw portion extending toward the axis from the other end of the circumferential surface so as to be able to abut the back surface of the other flange portion. A net clamp, a notch portion that allows passage of the claw portion during axial movement, and a relatively protruding portion adjacent to this notch portion to restrict axial movement when the claw portion comes into contact with the net clamp. The other flange portion has a protrusion that is axially movable so that the tip portion can be inserted into a recess carved on the back surface of one flange portion at a position where the claw portion and the protrusion face each other. A coupling device characterized in that it has a rod-shaped detent attached to a bayonet clamp.