JPS6224154Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention includes a rotary handle for manual operation and a drive mechanism that are interlocked and connected to a rotary shaft for valve opening/closing operation so that they can be rotated. The present invention relates to a valve opening/closing operation structure provided with a clutch mechanism that connects and disconnects the handle and the rotating shaft.

[Conventional disadvantages]

The valve opening/closing operation structure enables the valve opening/closing operation to be performed using either a manual handle or a drive mechanism, and also allows the connection between the handle and the rotating shaft to be severed by manual operation. This makes it possible to avoid the risk of the handle rotating unnecessarily when the drive mechanism opens and closes the valve.

However, in the conventional structure of the clutch mechanism that disconnects and disconnects the connection between the handle and the rotating shaft, as shown in FIG. Rotating a member 34 with an occlusal projection 34a which is fitted onto the outside so as to be relatively rotatable and which engages and disengages with the occlusal projection 33 connected to the handle 31 so as to rotate integrally with the occlusal projection 33 connected to the handle 31 as the handle 31 slides forward and backward. A spring 35 is provided on the support shaft 32 so as to be integrally rotatable and non-slidably fitted to the outside and elastically bias the handle 31 toward the occlusal side, and has a locking action on the handle 31 to maintain the handle 31 in the disengaged state. The locking piece 36 is provided so that it can be switched between a locking position and a locking release position by swinging around a support shaft 37, but this structure requires a large number of expensive parts. This has the disadvantage of making the structure expensive and complicated.

[Issues of this invention]

An object of the present invention is to simplify the clutch mechanism that connects and disconnects the handle and the rotating shaft.

[Means of problem solving]

The characteristic configuration of the present invention is that, in configuring a clutch mechanism that connects and disconnects the rotary handle for manual operation and the rotary shaft for valve opening/closing operation, the handle can be slid freely on a rotary support shaft that rotates integrally with the rotary shaft. , and an occlusal projection that is fitted onto the outside so as to be relatively rotatable and that projects intermittently in the circumferential direction from the handle to a side surface on the side where the rotation shaft is attached is provided, and an elastic plate that projects in the radial direction from the rotation shaft. a state in which the occlusal protrusion and the protruding elastic plate engage in a circumferential direction and rotate integrally as the handle is slid forward and backward in the direction of the rotational axis of the handle; is configured to be able to switch between a state in which the protruding elastic plate is engaged with the occlusal protrusion and a state in which the protruding elastic plate is disengaged from the occlusal protrusion, the protruding elastic plate being smaller than the amount of radial protrusion of the protruding elastic plate. A ring-shaped locking member having an inner diameter of It is configured so that it can be freely switched between an engaged state and a disengaged state.

[Effect]

That is, the connection between the handle and the rotating shaft is interrupted by causing the occlusal projection connected to the handle to engage and disengage from the elastic plate projecting in the radial direction from the rotating shaft as the handle slides forward and backward. In addition, in order to prevent the occlusal process from accidentally coming off the protruding elastic plate when operating the handle and to make it easier to handle, the elastic deformation function of the protruding elastic plate is effectively utilized to provide an occlusal state maintenance mechanism connected to the handle. The ring-shaped locking member is directly locked to the periphery of the protruding elastic plate, and the periphery of the protruding elastic plate is pressed and elastically deformed as the handle slides forward and backward, and the ring-shaped locking member is latched over the periphery of the protruding elastic plate. Since it is configured to switch between the operating position and the unlocking position, the elastic plate itself for connecting and disconnecting can be effectively used as the structure for maintaining the occlusal state.

〔effect〕

Therefore, the structure can be made simple, and the clutch mechanism can be made into a simple structure that does not require a large number of expensive parts, which is a great practical advantage.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

As shown in Figures 1 and 2, liquid outlet A
A valve frame 1 is provided with a valve seat located around the entire circumference of the valve, and a guide along the vertical direction located on both sides of the discharge port A, and a valve body 2 that is vertically slidable is provided.
A valve opening/closing operation section 4 is attached to a fixed case M that supports a threaded rod 3 connected to the valve body 2 in a freely threadable and movable state, thereby forming a water control door.

As shown in FIGS. 1 to 3, to configure the valve opening/closing operation section 4, a worm reduction mechanism 6 is provided in a reduction transmission case 5, and a cylindrical output shaft 7 of this mechanism 6 is connected to a threaded rod. The valve opening/closing rotating shaft 8 is connected to the operating nut No. 3 in a gear-interlocking manner for forward and reverse operation, and is fitted externally with a spline so that the worm 6A of the worm reduction mechanism 6 rotates integrally with the operating nut. , an electric motor 9 is connected in a gear-interlocking manner, and a rotary shaft 11 of a rotary handle 10 for manual operation is provided at the other end of the rotary shaft 8 in a state integrally formed with the rotary shaft 8; A clutch mechanism C is provided to connect and disconnect the rotating shaft 8, so that the valve body 2 can be raised and lowered by either the electric motor 9 or the handle 10, and the handle 10 and the rotating shaft 8 By disconnecting the handle 10 from the handle 10, it is possible to avoid the risk of the handle 10 rotating unnecessarily when the electric motor 9 is activated.

As shown in FIGS. 4 and 5, to configure the clutch mechanism, the handle 10 is slidably and relatively rotatably fitted onto the rotation shaft 11, and the handle 10 is rotated from the handle 10. An occlusal protrusion 13 is provided intermittently protruding in the circumferential direction on the side surface of the shaft root, and an elastic plate 14 protruding in the radial direction from the rotating shaft 8 is fixedly and continuously connected to the rotating shaft 8 of the handle 10. As the occlusal projection 13 and the protruding elastic plate 1 move forward and backward in the axial direction,
4 are configured to be switchable between a state in which they engage in the circumferential direction and rotate integrally, and a state in which they separate, and a state in which the protruding elastic plate 14 engages with the occlusal protrusion 13. A ring-shaped locking member 1 having an inner diameter smaller than the amount of radial protrusion of the protruding elastic plate 14 is located at the boundary between the state and the detached state.
5 is connected to the handle 10, and when the handle 10 moves in the axial direction, the ring-shaped locking member 15 elastically deforms and overcomes the elastic plate 14, and the occlusal protrusion 13 engages with the protruding elastic plate 14. It is configured to be switchable between a state and a detached state.

In short, the clutch mechanism C is constructed with a simple structure in which the elastic disc-shaped member 12 is effectively used not only as a member for occlusal and disengagement, but also as a member for maintaining the occlusal state.

In carrying out the present invention, the occlusal protrusion 13 connected to the handle 10 may be engaged with the disc-shaped member 12 by engaging the radially intermediate portion of the disc-shaped member 12. .

Furthermore, to construct the elastic disc-shaped member 12, synthetic resin materials such as polyethylene and polypropylene can be used.

Furthermore, as the drive mechanism 9, various types of mechanisms such as an electric motor, a fluid pressure cylinder, a fluid pressure motor, etc. can be used. If necessary, a clutch mechanism may be provided to connect and disconnect the drive mechanism 9 and the rotating shaft 8.

In addition, when the rotating shaft 11 is provided to rotate integrally with the rotating shaft 8, various changes can be made, for example, by making the supporting shafts 11 formed separately from the rotating shaft 8 interlock with the rotating shaft 8 through gears. .

In addition, the opening/closing operation structure of the present invention can be applied to rotary type valves such as butterfly valves in addition to water control doors, and when switching between the operating state of the manual handle 10 and the operating state of the drive mechanism is frequently performed, Of course, the present invention can also be applied to cases where the above switching is not performed frequently.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings in Figs. 1 to 5 show an embodiment of the present invention, in which Fig. 1 is a partially cutaway front view of the water control door, Fig. 2 is a longitudinal sectional front view of the valve opening/closing operation structure, and Fig. 3 is Fig. 4 is a longitudinal sectional view of the handle mounting portion, and Fig. 5 is a - line sectional view in Fig. 3.
A line sectional view, FIG. 6 is a sectional view of a conventional example. 8... Rotating shaft for valve opening/closing operation, 9... Drive mechanism,
DESCRIPTION OF SYMBOLS 10... Rotation handle for manual operation, 11... Rotation support shaft, 12... Elastic disk-shaped member, 15... Locking part, C... Clutch mechanism.

Claims (1)

[Scope of utility model registration request] A rotary handle 10 for manual operation and a drive mechanism 9 are interlocked and connected to a rotary shaft 8 for valve opening/closing operation so that the handle 10 can be rotated.
The valve opening/closing operation structure is provided with a clutch mechanism C that connects and disconnects the handle 10 with the rotating shaft 8.
The rotary support shaft 11, which rotates integrally with the rotary shaft 8, is slidably and relatively rotatably fitted on the outside, and is intermittently protruded in the circumferential direction from the handle 10 to the side surface on the side where the rotary shaft is attached. An occlusal protrusion 13 is provided, and an elastic plate 14 protruding radially from the rotating shaft 8 is fixedly connected to the occlusal protrusion 13. The projecting elastic plate 14 is configured to be switchable between an interlocking state in which the protruding elastic plate 14 engages in the circumferential direction and rotates together with the protruding elastic plate 14, and a state in which both of them separate from each other. A ring-shaped locking member 15 having an inner diameter smaller than the amount of radial protrusion of the protruding elastic plate 14 is attached to the handle 10 at the boundary between the mating state and the disengaging state.
When the handle 10 moves in the axial direction, the ring-shaped locking member 15 elastically deforms and overcomes the elastic plate 14, and the occlusal protrusion 13 engages and disengages from the protruding elastic plate 14. An operating structure for opening and closing a valve, characterized in that it is configured to be freely switchable between states.