JPH0140342Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a clutch that has a mechanically operated clutch member and is suitable for external operation by rotating a separately manufactured rotation shaft. , more specifically,
This invention relates to a clutch that can regulate the amount of rotation of its rotation shaft.

(Prior Art) Conventionally, a clutch having a mechanically actuated clutch member has a member such as a steel ball or roller that acts as a wedge between a driving member and a driven member, that is, a clutch member. Clutch action is performed by moving this clutch member.

(Problem to be solved by the invention) In this case, a link mechanism or a cam mechanism is generally used as a means for moving the clutch member, but these usually have a complicated structure. It had some drawbacks. Since the clutch is naturally operated outside the clutch, in addition to the above-mentioned mechanism for driving the clutch member, a mechanism for operating the clutch member externally is required. The seed clutch had the disadvantage of increasing the size of the entire device.

(Means for solving the problem) This invention was made in view of the above circumstances.
By improving the clutch having this type of clutch member, we propose a clutch that can simplify the structure without impairing the reliability of drive transmission, and that can be operated from the outside using an extremely simple mechanism. That is.

Furthermore, the present invention adds a locking device to the clutch operating mechanism from the outside.

That is, the clutch of the present invention is of a type in which a clutch member is disposed between a driving member and a driven member, and the clutch member is moved by inserting and removing an operation pin to connect or disconnect the driving member and the driven member. In the clutch, a separate rotating shaft is provided so as to be movable in the axial direction with respect to a pair of front and rear rotating shaft holders, and an operating lever for pressing the head of the operating pin is provided integrally with the rotating shaft, A protruding fixing piece is provided on the clutch body side, and a locking piece is formed on the operating lever on one side of the fixed side, and when operating the clutch from the outside, the rotation shaft is moved in the axial direction to engage the locking piece. The locking piece faces the fixed piece, and the locking piece abuts against the fixed piece, thereby preventing rotation of the operating lever and regulating the amount of rotation.

(Example) The present invention will be explained below based on the illustrated example.

First, to explain the outline of a shutter device in which the clutch of the present invention is implemented, as shown in Figs. Pulley P in part
1 and P2, a rope R is stretched between the pulleys, and the rope is rotated by a drive motor M to open and close the shutters 1 and 2. As for the shutters, the leading shutter 1 is suspended above, and the other shutters 2, 2 run on the lower frame shutter rail 3. Further, the front and rear ends of the shutters are formed obliquely so that one shutter in the door pocket 32 where no shutter rail exists can push the other shutters toward the back. The shutters are connected by a connector 4, one end of which is pivotally connected to one shutter, and the other end is movably attached to another shutter.
Furthermore, in the shutters 1 and 2, rollers 5,
5 are rotatably mounted on a vertical shaft 51, and the peripheral surfaces of these rollers 5 are provided so as to be slightly exposed to the outside from the frame surface. In this way, shutters 1 and 2
When the rollers 5 are attached to the horizontal stile so as to be exposed from the side of the stile, the frictional resistance against the shutter frame can be reduced and the shutter can be moved easily. In addition, regarding the above-mentioned pulley, the 12th pulley
As shown in the figure, by providing an auxiliary pulley P3 near the drive-side pulley P1 and winding the rope R multiple times between these pulleys P1 and P3,
It is possible to prevent slips between the pulley and the rope.

In such a shutter device, the clutch according to the present invention is provided in the drive device 8 that rotationally drives the pulley P1.

As shown in FIGS. 2 to 5, in the drive device 8, the driving force from the drive motor M is transmitted via a reduction gear to a worm W1 and a rotating worm gear W2, and this is transmitted to a pulley via a clutch 82. Linked to P1.

The clutch 82 of the present invention connects a rotating shaft 82a, which is a worm gear shaft to which a lower end pulley P1 is attached, to a rotating body W2.
An operating pin 82b is rotatably attached to the operating pin 82b and has an annular notch 82c formed at a suitable position on the outer circumferential surface.
is inserted into the rotating shaft 82a so that it can protrude and retract, and the rotating shaft 8
A clutch member 82 such as a steel ball is attached to 2a.
d and 82d are installed so that they can protrude and retract in the radial direction of the shaft, and the operating pin 82 is normally held by a spring 82e.
When the clutch member 82d is pressed against the rotary body W2 by protruding and biased, thereby drivingly connecting the rotary body W2 and the rotating shaft 82a, the operation pin 82b is buried against the spring 82e. In this case, the clutch member 82d is loosely fitted into the notch 82c of the operating pin 82b, and the pressure contact between the clutch member 82d and the rotating body W2 is released, and the transmission of the motor driving force is cut off. Note that the driving member and driven member in the present invention are described as the rotating body W2 and the rotating shaft 82a in the embodiment.

In the drive device 8 described above, as shown in FIGS. 1 and 6, a clutch rotation shaft 81 is provided protruding from the drive motor side toward the indoor side in order to switch between automatic and manual modes in the drive motor M. do. In other words, the operation pin 82b is moved in and out using the clutch rotation shaft 81. In this example, the operation lever 83 is screwed onto the base of the clutch rotation shaft 81, and is attached to the tip of the clutch rotation shaft 81. By rotating the handle 84, the operating lever 83 presses the operating pin 82b, and when the handle 84 stops rotating, the spring 82
e and the leaf spring 85 that elastically biases the operating lever 83 causes the operating pin 82b to protrude, and the clutch 82 of the present invention is connected and disconnected.
As shown in FIG. 7, the leaf spring 85 has a central portion 85a cut out in a U-shape, and the cutout outer portion 85b is raised upward to form a spring portion. It is screwed onto the clutch body.

The rotation shaft 81 is provided so as to be movable in the axial direction relative to the pair of front and rear rotation shaft holders 88, 88. Between the pair of rotating shaft holders 88, 88, a protruding fixing piece 89 is provided near the rotating shaft, and a locking piece 83 is provided on the operating lever 83 on one side of the fixing.
form a. In normal cases, the locking piece 83a has a positional relationship in which the locking piece 83a does not come into contact with the fixed piece 89 even when the rotation shaft 81 is rotated, but by moving the rotation shaft 81 in the axial direction, the locking piece 83a is fixed. By making the locking pieces 83a face each other, the locking pieces 83a come into contact with the fixed pieces 89, and the rotation of the operating lever 83 is prevented and the amount of rotation thereof is regulated. In the state of this embodiment, as described above, the operating pin 82b is buried against the spring 82e, and the clutch member 82d is loosely fitted into the notch 82c of the operating pin 82b, and rotates with the clutch member 82d. The pressure contact between the body W2 is released and the transmission of the motor driving force is cut off. When the handle 84 is pushed in this state, the locking piece 83a is disengaged from the fixed piece 89 and rotation prevention is released, the operating lever 83 is urged by the plate spring 85, and the operating pin 82b is projected by the spring 82e. The clutch member 82d is biased toward the rotating body W2.
This brings the rotating body W2 and the rotating shaft 82 into pressure contact with each other.
a will be drivingly connected.

In the embodiment, when the shutter device is automatically opened and closed, a limit switch 86 provided integrally with the drive device 8 regulates the opening/closing position of the shutter. This limit switch 86 is provided at the bottom of the drive device 8, and has limit pieces 86a and 86b engaged with the wound rope R at two locations on the front and back, and the limit abutting metal fitting 8 fixed to the rope R when the shutter is running.
When the limit pieces 6c come into contact with the limit pieces 86a and 86b, the shutter stops running.

The drive device 8 is screwed onto the shutter frame 31,
As shown in FIG.
The upper frame auxiliary member 31b is screwed onto the web 31a from below, and then the upper frame auxiliary member 31b is screwed on as shown in FIG. 13. With this configuration, the cover 87 can be removed only when the shutters 1 and 2 are opened, which is effective for crime prevention.

(Effect of the invention) As explained above, in the clutch of the present invention, the clutch member is disposed between the driving member and the driven member, and the clutch member is moved by moving the operating pin in and out, thereby connecting the driving member and the driven member. In a type of clutch that connects or disconnects a member, a separately manufactured rotation shaft 8 is used.
1 is provided so as to be movable in the axial direction relative to the pair of front and rear rotating shaft holders 88, 88, and an operating lever 83 for pressing the head of the operating pin 82b is integrally provided on the rotating shaft 81. A protruding fixing piece 89 is provided between the rotating shaft holders and near the rotating shaft, while an operating lever 83 on one side of the fixed
Since the locking piece 83a is formed on the
A very simple mechanism allows for external operation of the clutch. Moreover, by moving the rotation shaft 81 in the axial direction and arranging the locking piece to face the fixed piece, the locking piece 83a comes into contact with the fixed piece 89, thereby regulating the amount of rotation of the operating lever 83. Therefore, when the clutch is engaged or disengaged, this state can be maintained by this locking mechanism.

When the clutch of the present invention constructed in this way is used in the shutter device of the embodiment, switching between automatic and manual mode in the drive motor M can be performed by a rotating shaft protruding from the drive motor side toward the indoor side. Because it is a device, it is possible to switch between automatic and manual mode with a single touch from inside the room as needed.

As described above, according to the present invention, the device as a whole can be made smaller than conventional clutches, the structure can be simplified without compromising the reliability of drive transmission, and the clutch can be operated from the outside using an extremely simple mechanism. This has the advantage of being able to perform the following tasks.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the operating lever part provided on the clutch of the present invention, Fig. 2 is a longitudinal sectional front view of the drive device equipped with the clutch of the present invention, Fig. 3 is a plan view of the same, and Fig. 4 is a bottom view. , Fig. 5 is a left side view, Fig. 6 is an external perspective view, Fig. 7 is a perspective view of the leaf spring, Fig. 8 is a front view showing a shutter implementing the present invention, and Figs. 9 and 10 are A-A, B-B sectional view of Fig. 8,
FIG. 11 is a cross-sectional view of FIG. 8, FIG. 12 is a perspective view showing the state in which the rope is wound around the pulley, and FIG. 13 is a view showing the state in which the cover is attached. 1, 2...Small shutters (1...First shutter, 2...Other shutters),
8... Drive device, 81... Rotating shaft, 82... Clutch of the present invention, 82a... Rotating shaft, 82b... Operation pin, 82
c... Notch, 82d... Clutch member, 83... Operation lever, 83a... Locking piece, 88... Rotating shaft holder, 89... Fixed piece, M... Drive motor, R... Rope.

Claims (1)

[Scope of utility model registration request] In a clutch of a type in which a clutch member is disposed between a driving member and a driven member, and the clutch member is moved by moving an operation pin in and out to connect or disconnect the driving member and the driven member, The shaft 81 is provided so as to be movable in the axial direction relative to the pair of front and rear rotating shaft holders 88, 88, and an operating lever 83 for pressing the head of the operating pin 82b is integrally provided on the rotating shaft 81. A protruding fixing piece 89 is provided between the pair of rotating shaft holders and near the rotating shaft, and a locking piece 83a is formed on the operating lever 83 on one side of the fixed side. The clutch is characterized in that the locking piece 83a comes into contact with the fixed piece 89 and restricts the amount of rotation of the operating lever 83 by moving the locking piece in the direction to make the locking piece face the fixed piece. .