JPS6344115Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a handle device used for opening, closing, and locking of opening/closing bodies such as lids and doors in various types of equipment such as centrifugal separators.

(Prior Art) For example, in a centrifugal separator, in order to ensure the safety of the operator, it is necessary to stop the operation of the drive motor before opening the tank lid.

To this end, it is desirable that the handle device not only focus on the function of opening and closing lids and doors, but also have a safety function that sets a certain order relationship between the operation of equipment and the opening and closing of lids. .

(Problems to be Solved by the Invention) Therefore, the object of the present invention is to add a solenoid lock mechanism to the handle device, operate the solenoid mechanism in conjunction with the stoppage of equipment, and thereby lock the latch. It is an object of the present invention to provide a handle device with a safety function capable of releasing restraints.

(Means for Solving the Problems) The handle device with safety function of the present invention will be explained below using the reference numerals in the attached drawings. A strike 4 fixed to the fixed frame 3 and a first pivot 5
a handle 6 pivotally connected to the main body 2 by a second
A latch 8 is pivotally connected to the main body 2 by a pivot 7, and a claw portion 8b engages with the strike 4 to lock the opening/closing body 1 to the fixed frame 3; A dead point mechanism 9 that rotates and urges the lock 8 in the unlocking direction, and a dead point mechanism 9 that is fixed to the side of the main body 2,
It consists of a solenoid device 10 that is activated in connection with the stoppage of equipment, and includes a solenoid device 10 at the tip 6 of a handle 6.
a to push the tip 8a of the latch 8 to drive the latch 8 in the unlocking direction, and then move the locking rod 12 provided on the plunger 11 of the solenoid device 10 to the side wall 2 of the main body 2.
The latch 8 is connected to and disengaged from the receiving hole 14 of the latch 8 through the guide hole 13 of the latch 8.

(Function) When opening the opening/closing body 1 of the equipment upon completion of a required processing step such as centrifugation, a predetermined drive current flows through the solenoid device 10. The switch of the energizing circuit of this solenoid device is turned on through the intervention of a suitable relay circuit or the like at the same time as the equipment is stopped, or after a predetermined period of time has elapsed since the equipment stopped.

When the solenoid device 10 is energized, the plunger 11 is attracted, so that the locking rod 12 escapes from the receiving hole 14 of the latch 8 and is drawn into the guide hole 13 of the main body 2. This releases the latch 8 from the main body 2, and the opening/closing body 1 is opened by pulling the handle 6.

That is, when the handle 6 is rotated about the first pivot 5, the tip 6a of the handle 6 pushes the tip 8a of the latch 8, so the latch 8 resists the bias of the dead point mechanism 9 and rotates the second pivot 7. rotate around the center,
The claw portion 8b of the latch 8 is disengaged from the strike 4, and the opening/closing body 1 is unlocked from the fixed frame body 3.

Since the solenoid energizing circuit is opened during or after the opening/closing body 1 is opened, the plunger 11 slides protrudingly due to the bias of the return spring 15, and the tip of the locking rod 12 moves to the unlocked position. The latch 8 is pressed against the side surface of the latch 8.

When the opening/closing body 1 is rotated in the closing direction, the tip 8a of the latch 8 hits the strike 4, so the latch 8 rotates in the opposite direction against the bias of the dead point mechanism 9, and the claw 8b comes into contact with the strike 4. Re-engage. As a result, the opening/closing body 1 is locked to the fixed frame 3.

The tip of the locking rod 12, which was in sliding contact with the side surface of the latch 8, enters the receiving hole 14 at the moment when the claw 8b and the strike 4 engage, automatically locking the latch 8 to the main body 2.

(Embodiment) In the illustrated embodiment, the deponent mechanism 9 includes a spring receiving plate 9a which is pivotally connected to the base end 8c of the latch 8 by a third pivot 16, and which is inserted into an opening 17 of the partition wall 2b of the main body 2. , and a coil spring 9b which is fitted into the spring receiving plate 9a and whose one end abuts against the partition wall 2b.

One end of the spring 19 fitted to the support shaft 18 fixed to the handle 6 comes into contact with the inner surface of the handle 6, and the other end comes into contact with the tip 8a of the latch 8, so that the handle 6
is urged to return in the direction of lodging.

In this embodiment, the lock rod 12 is constructed separately from the plunger 11 of the solenoid device, and a connecting pin 20 between the two protrudes laterally. A micro switch 21 for locking/unlocking confirmation is attached to the side of the solenoid device 10, and the pin 20 projects to a position where an actuator lever 22 of the switch 21 can be pressed.

As mentioned above, the solenoid device 10 is energized prior to opening the opening/closing body 1, and when the locking rod 12 escapes from the receiving hole 14 of the latch 8, the switch 21 is operated with the pin 20, and the opening/closing body 1 is released. The lock status is indicated by a confirmation lamp, etc.

Further, when the opening/closing body 1 is closed and the locking rod 12 engages with the receiving hole 14, the pin 20 is separated from the actuator lever 22, so that the opening/closing body 1
Similarly, it is displayed that the is locked.

A through hole 23 is provided in the side wall 2c of the main body 2, which faces the side wall 2a, on an extension of the guide hole 13 and the receiving hole 14. This through hole 23 is used for unlocking in an emergency.

That is, when the solenoid device 10 does not operate normally due to a power outage or failure, a rod such as a screwdriver is inserted through the through hole 23 and the lock rod 12 is pushed.
It protrudes from the receiving hole 14. This creates the same condition as when the solenoid device 10 was activated.

The solenoid locking mechanism consisting of the solenoid device 10 and the locking rod 12 is such that the latch 8 rotates in the unlocking direction due to internal vibrations or external shocks that overcome the biasing of the dead point mechanism 9 during operation of the equipment. It also has a function to prevent malfunctions.

Incidentally, the locking rod can also be constituted by the plunger 11 itself.

(Effects of the invention) As described above, in the handle device of the present invention, the solenoid device 10 that is activated in connection with the stoppage of equipment is provided on the side of the main body 2, and the lock rod provided on the plunger 11 of the solenoid device 10 is provided. 12 through the guide hole 13 in the side wall 2a of the main body 2 and the latch 8
Since the opening/closing body is engaged and detached from the receiving hole 14 of the opening/closing body, the risk of opening the opening/closing body in a dangerous condition while the equipment is in operation or immediately after the operation is stopped is completely eliminated, and the safety function is excellent.

[Brief explanation of the drawing]

The drawings show a handle device with a security function according to an embodiment of the present invention, FIG. 1 is a partially cutaway front view of the handle device in the locked state, and FIG. 2 is a left side view of the handle device in the locked state. FIG. 3 is a bottom view of the handle device in the locked state. Figure 4 is a sectional view taken along line A-A in Figure 1, and Figure 5 is B in Figure 4.
-B is a sectional view of the main part. FIG. 6 is a sectional view corresponding to FIG. 4 of the handle device in the unlocked state;
FIG. 7 is a sectional view of the main part taken along the line CC in FIG. 6. 1...Opening/closing body for equipment, 2...Main body, 3...Fixing frame for equipment, 4...Strike, 5...First
Pivot, 6...Handle, 7...Second axis, 8...
Latch, 9... Dead point mechanism, 10... Solenoid device, 11... Plunger, 12...
Lock rod, 13... Guide hole, 14... Receiving hole, 15
... Spring for return, 16 ... Third pivot, 17 ... Opening, 18 ... Support shaft, 19 ... Spring, 20 ... Pin, 21 ... Micro switch for locking/unlocking confirmation, 2
2...actuator lever, 23...through hole for emergency unlocking operation.

Claims (1)

[Scope of utility model registration request] A main body 2 fixed to an opening/closing body 1 of equipment, a strike 4 fixed to a fixed frame 3 of the equipment, and a handle 6 pivoted to the main body 2 by a first pivot 5.
and a latch 8 which is pivotally connected to the main body 2 by the second pivot 7 and whose claw portion 8b engages the strike 4 to lock the opening/closing body 1 to the fixed frame 3, and a latch 8 between the main body 2 and the latch 8. It consists of a dead point mechanism 9, which is equipped and rotates and biases the latch 8 in the unlocking direction, and a solenoid device 10, which is fixed to the side of the main body 2 and is activated in connection with stopping the operation of equipment. The latch 8 is driven in the unlocking direction by pushing the tip 8a of the latch 8 with the part 6a, and the locking rod 12 provided on the plunger 11 of the solenoid device 10 is pushed into the main body 2.
A handle device with a security function that is connected to and removed from a receiving hole 14 of a latch 8 through a guide hole 13 of a side wall 2a.