JPH0616092Y2 - Middle pillar fixing device for shutter - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to an improvement of a center pillar fixing device for fixing a middle pillar of a shutter to a floor surface.

[Conventional technology]

When closing multiple shutters in which a plurality of shutter curtains are connected in series, a middle pillar serving as an intermediate guide rail is erected between the shutter curtains.

The middle pillar has a middle pillar fixing device attached to its lower end in order to prevent the middle pillar from coming off from the floor surface due to wind pressure applied to the shutter curtain.

FIG. 3 and FIG. 4 are a rear perspective view and a side view showing a conventional center pillar fixing device, which is a receiving seat 2 provided on the floor 1.
The left and right rods 4a and 4b of the dropping rod 4 that is lifted and dropped into the engaging hole 3 of the penetrating through the lock case 6 attached to the lower end of the center pillar 5 are arranged so as to be slidable up and down. Inside, a spring 7 that is engaged with the rod 4a and urges the drop rod 4 so as to push it up in the unlocking direction (shown by the arrow f), and a rod 4b that is disengageably engaged with the drop rod 4 to push it down. A locking mechanism L for holding the closed state is provided (see Japanese Utility Model Laid-Open No. 48-50494).

The locking mechanism L has a recess 8 formed by cutting out the peripheral surface of the rod 4b.
And a leaf spring-like locking engagement piece 9 that engages from above in the recess 8 when the dropping rod 4 is completely dropped into the engagement hole 3, and the locking engagement piece 9 with its spring elasticity. Unlocking operation lever 10 that is pressed down in the direction of separating from the inside of the recess 8 against
It consists of and.

[Problems to be solved by the invention]

However, in this case, there is a drawback in that the strength of the rod 4b in which the recess 8 is cut out is weakened.

Further, the tip end of the locking engagement piece 9 is always in sliding contact with the peripheral surface of the rod 4b, and when it is engaged with the recess 8 of the rod 4b, it is displaced only slightly. A clear locking sound is not generated, and the amount of displacement of the unlocking operation lever that abuts and responds to the locking engagement piece 9 is extremely small.

For this reason, it is not possible to visually or audibly confirm whether or not the locking mechanism L has been effectively operated, and the middle pillar 5 may be fixed without being completely locked.

In particular, since dust and dirt are likely to collect in the engaging hole 3 of the receiving seat 2 provided on the floor 1, even if it is thought that the dropping rod 4 has been completely pushed down, the locked state may not be reached.

If the locked state is incomplete, the elasticity of the spring 7 may cause the drop rod 4 to return to the unlocked state, and the center pillar 5 may come off.

Further, since the unlocking operation lever 10 is configured to project to the side of the lock case 6 and to be operated in the vertical direction, when the shutter is opened and closed, a hand holding the shutter curtain to raise or lower it touches, or the shutter is released. There is a risk of accidental operation, such as hitting the seat plate of the curtain.

Therefore, an object of the present invention is to provide a center column fixing device which has excellent strength and can detect clearly whether or not the locking mechanism has been actuated with a simple structure and which is free from the risk of erroneous operation. .

[Means for solving problems]

In order to achieve this object, the present invention provides that the right and left rods of the dropping rod lifted down into the engaging holes of the receiving seat provided on the floor pass through the lock case attached to the lower end of the center pillar and move up and down. Inside the lock case, which is slidably disposed, a spring that is engaged with one of the rods and urges the drop rod to push up in the unlocking direction, and a releasably engageable with the other of the rods. In a center pillar fixing device of a shutter provided with a locking mechanism for holding the dropping rod in a pressed state, the locking mechanism has a pin projecting from a peripheral surface of the other rod and the pin from above. It consists of a spring catch that is retracted when pressed, and a spring rod that is completely dropped into the engagement hole so that the latch bolt pops out again when the force of the pin is removed. Wherein the unlocking operation member which protrudes out of the over scan are projected.

[Action]

According to the present invention, since the pin protruding from the rod of the drop rod and the latch bolt of the spring catch are engaged to obtain a locked state, the peripheral surface of the rod is cut out to form a recess as in the conventional case. There is no need to do so, and the strength of the rod is not impaired.

Also, when the drop rod is pushed down to reach the locked state,
The force of the pin, which was pressing to retract the latch bolt of the spring catch, is released, and the latch bolt pops out vigorously, at which time a very large and clear locking sound is emitted.

As a result, when the locking sound is not generated even when the drop rod is pushed down with full force, it is possible to sensibly assure that the locked state is not obtained due to the accumulation of dust and dust in the engaging hole of the receiving seat. Since it is possible to detect it, it is possible to prevent an accident that the central pillar comes off.

In addition, the locking mechanism is extremely simple, consisting of a pin protruding from the rod of the drop rod and a spring catch with an unlocking operator protruding from the latch bolt, greatly reducing the manufacturing cost of the entire device. can do.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a rear view showing an example of a center pillar fixing device according to the present invention, and FIG. 2 is a side view thereof.

The same parts as those in FIGS. 3 and 4 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the present invention, the locking mechanism L is retracted when the pin 11 is provided on the peripheral surface of the rod 4b and is pressed from above by the pin 11, and the drop rod 4 is completely dropped into the engagement hole 3. When the force of the pin 11 is removed and the force of the pin 11 is removed, the latch bolt 13 pops out again and the spring catch 12 is formed. The rat bolt 13 is provided with an unlocking operator 14 protruding outside the lock case 6.

The pin 11 is a rod 4 for elastically compressing the spring 7.
In the unlocked state, the pins 11 and 15 are protruded at the same height as the pins 15 protruded in b.
Is pressed against the upper surface of the lock case 6 by the elasticity of the lock case 6, and acts as a stopper that prevents the drop rod 4 from coming out of the lock case 6.

The spring catch 12 is located between the rods 4 a and 4 b and is fixed to the inner wall of the lock case 6.
Latch bolt 13 supported by 6, 16 slidably to the left and right
And a spring 17 for urging the tip of the latch bolt 13 to advance to a position orthogonal to the rod 4b.

An inclined surface 18 is formed at the tip of the latch bolt 13 to convert a vertical force acting downward from above into a horizontal force.

Further, the unlocking operator 14 is provided so as to project from the peripheral surface of the latch bolt 13, penetrates the wall surface of the lock case 6, and the lock case 6 concerned.
Is projected to the front side of.

Although illustration is omitted, the lock case 6 has a wall surface provided with a long hole for sliding the unlocking operator 14 to the left and right.

Further, on the back surface side of the lock case 6, an angle 19 fitted to the lower end of the center pillar 5 is integrally formed.

The above is an example of the configuration of the device of the present invention. Next, its function and effect will be described.

First, the lower end of the middle pillar 5 is fitted into the angle 19 of the lock case 6, and the entire device is attached to the middle pillar 5.

In this state, the center pillar 5 is erected on the floor 1, and the drop rod 4 is pushed down to receive the left and right rods 4a and 4b.
It is dropped into the engaging hole 3 of.

As a result, the pin 11 projecting from the rod 4b engages with the inclined surface 18 formed at the tip of the latch bolt 13 from above, and causes the latch bolt 13 to retreat against the elasticity of the spring 17.

When the latch bolt 13 is retracted so as to be completely separated from the pin 11, the pin 11 passes through the tip of the latch bolt 13 and further descends, and at the same time, the latch bolt 1
The force of the pin 11 acting on 3 is released, and the latch bolt 13 pops out vigorously due to the elastic force of the spring 17, and at that time, a very large and clear locking sound of "kacha" is emitted.

As a result, it is possible to easily confirm whether or not the dropping rod 4 has been completely pushed down to be in the locked state.

That is, when the locking sound is not generated even when the drop rod 4 is pushed down with all the force, it is sensuous that dust and dirt are accumulated in the engaging hole 3 of the receiving seat 2 and the locked state is not completely obtained. Since it can be surely detected, it is possible to prevent the accident that the center pillar 5 comes off due to the improper locking.

When releasing the locked state, the latch bolt 1
By the unlocking operator 14 protruding from the latch 3, the latch bolt 1
Only by sliding 3 in the horizontal direction away from the pin 11, the entire dropping rod 4 is lifted in the unlocking direction f by the elasticity of the spring 7.

The locking mechanism L configured as described above is an extremely simple one that includes the pin 11 projecting from the rod 4b of the dropping rod 4 and the spring catch 12 projecting the unlocking operator 14 from the latch bolt 13. Yes, and unlocking operator 14
Therefore, unlike the conventional unlocking operation lever, it is not necessary to use a link mechanism, so that the manufacturing cost of the entire device can be significantly reduced.

Further, since the rod 4b does not have a notched peripheral surface as in the conventional case, the strength does not decrease.

Further, since the unlocking operator 14 is projected to the front side of the lock case 6 and is configured to be operated in the horizontal direction, it does not disturb the opening and closing of the shutter. , There is no risk of erroneous operation by touching the shutter curtain or touching the shutter curtain seat.

[Effect of device]

As described above, according to the present invention, whether or not the locking mechanism of the drop rod has been reliably operated can be surely detected by the presence or absence of the locking sound that is sensuously recognized, and the structure therefor is also strong. Since it is excellent and extremely simple, there is a very excellent effect that it is possible to provide at a low cost a highly reliable middle pillar fixing device that does not cause a locking failure.

Further, there is an effect that a locking failure due to an erroneous operation of the unlocking operator can be prevented, and the reliability is very high.

[Brief description of drawings]

FIG. 1 is a rear view showing an example of a center pillar fixing device according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a rear perspective view showing a conventional device, and FIG. 4 is a side view thereof. Explanation of reference numerals 1 ... Floor, 2 ... Receiving seat, 3 ... Engaging hole, 4 ... Drop rod, 4a, 4b ... Rod, 5 ... Middle pillar, 6 ... Lock case, 7 ... Spring , L ... Locking mechanism, 11 ... Pin, 12 ... Spring catch, 13 ... Latch bolt, 14 ... Unlocking operator.

Claims (1)

[Scope of utility model registration request] 1. Right and left rods of a dropping rod lifted down in an engaging hole of a receiving seat provided on a floor are arranged so as to be vertically slidable through a lock case attached to a lower end of a center pillar. , In the lock case, a spring that is engaged with one of the rods and urges the drop rod to push up in the unlocking direction, and the other of the rods is detachably engaged to push down the drop rod. In a central column fixing device for a shutter provided with a locking mechanism for holding the locked state, the locking mechanism is a pin protruding from the peripheral surface of the other rod, and when the pin is pressed from above, the locking mechanism retracts and drops. It consists of a spring catch in which the latch bolt pops out again when the rod is completely dropped into the engagement hole and the force of the pin is removed, and the latch bolt is unlocked to protrude outside the lock case. Sakuko center post fixing apparatus characterized by is protruded.