JPS638975Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is applicable to smoke and fire shutters, smoke prevention panels,
This invention relates to a manual closing device for an opening/closing body such as a smoke exhaust damper.

[Prior art and problems to be solved by the invention] In general, some manual closing devices of this type operate by pulling a connecting wire by operating a manual lever pivoted on the case body in the event of a disaster such as a fire.
There is a device in which the opening/closing body is closed by activating a brake release means connected via a connecting wire, and such a device is known, for example, in Japanese Utility Model Publication No. 57-43031. However, in this case, since the connecting wire is directly connected to the manual lever, the pulling direction of the connecting wire changes when the manual lever is opened. Therefore, a guide roller is provided in the middle to connect the connecting wire's outer cable. It is necessary to make sure that the direction of feeding from the receiver is always facing downward. As a result, when the connecting wire is pulled, a large amount of operational resistance inevitably occurs in the guide roller section, which not only hinders smooth operation, but also causes the connecting wire to become damaged quickly, which is a problem. was.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a manual closing device for an opening/closing body that can eliminate these drawbacks. A manual closing device configured to release a brake on the opening/closing body side by pulling a connecting wire downward by opening a manual lever pivotally supported at the lower end of the front opening toward the front side downward, The manual lever is provided with a link body whose one end is pivoted at a position above the pivot point with the case body, and the other end of the link body is movable in the vertical direction on a guide body provided on the case body side. The other end of the link body is guided by the guide body and moved downward by the link operation accompanying the opening operation of the manual lever, and the connecting wire is attached to the other end of the link body. It is characterized by being connected.

With this configuration, the present invention reliably prevents the connecting wire from receiving large operating resistance, making the manual closing operation smooth and light.
Additionally, damage to the connecting wires can be prevented.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a manual closing device for the opening/closing body, and the manual closing device 1 is connected to a brake release device (not shown) via a connecting wire 3 that passes through an outer cable 2, and is connected to a brake release device (not shown) by a manual lever 4, which will be described later. By pulling the connecting wire 3, the brake release device is actuated and the opening/closing body is closed, but these structures are the same as before.

The outer shell of the manual closing device 1 is formed by a case body 5 embedded in a wall, and an opening 5a is formed in the front of the case body 5.
a is covered by the manual lever 4 and the resin plate 6. That is, in the manual lever 4, a bracket 4a protruding into the case body 5 from both left and right sides of the lower end is rotatably supported via a pin shaft 7 on both left and right sides of the opening 5a, and the manual lever 4 is normally attached to the case body. The resin plate 6 covers the upper part of the opening 5a by being attracted to a magnet 5b provided on the 5 side, and is held in a closed position covering the opening 5a.In an emergency, the resin plate 6 covers the upper part of the opening 5a. It can be rotated in the direction of arrow A (Fig. 1) to the open position.

On the other hand, 8 is a link body that connects the connecting wire 3 and the manual lever 4, and one end of the link body 8 is connected to a bracket 4b formed on the back surface of the manual lever 4 and above the bracket 4a. The connecting wire 3 is rotatably supported on the other end via a pin shaft 9, and the connecting wire 3 is fixed to the other end via a fixing member 10. Here, the fixing member 10
is fixedly installed between a pair of link plates 8a forming the link body 8, but the fixing member 10
has a screw shaft 10a formed with a slit 10b.
is integrally provided, and one end of the connecting wire 3 inserted through the slit 10b is fixed by tightening a nut 10c screwed onto the screw shaft 10a. Further, the fixing member 10 is formed with a guide pin 10d that penetrates the link plate 8a and projects left and right.

On the other hand, 11 is a frame fixedly installed inside the case body 5, and a vertically long guide hole 11 is provided in an opposing bracket portion 11a of the frame 11.
b is formed, and by loosely fitting the guide pin 10d into this guide hole 11b, the fixing member 10 is guided to move up and down during a predetermined stroke S. When the manual lever 4 is in the closed position, the fixing member 10 is located at the upper end of the guide hole 11b, and the connecting wire 3 is in a relaxed state.
When the manual lever 4 is rotated in the direction A from this state, the fixing member 10 moves vertically downward, and the connecting wire 3 is gradually pulled, and when the manual lever 4 is operated to the open position, The pin shaft 9 crosses the virtual line B (dotted chain line shown in FIG. 1) passing through the guide pin 10d and the pin shaft 7, and thereby the manual lever 4 absorbs the reaction force of the connecting wire 3. It is designed to be received in the A direction and held in an open position. In addition, 12 is an outer receiving member that fixes the end portion of the outer cable 2 in a clamping manner.

In the embodiment of the present invention configured as described above, in order to close the opening/closing body in the event of a disaster such as a fire,
If the resin plate 6 on the front side of the manual closing device 1 is broken through and the manual lever 4 is rotated in the direction A, the connecting wire 3 is pulled, the brake is released, and the opening/closing body is closed. At this time, the manual lever 4 is held in the open position even if the hand is released. on the other hand,
To restore braking, the manual lever 4 may be returned to the closed position.

As described above, in the present invention, although the brake is released by pulling the connecting wire 3 by rotating the manual lever 4 provided in the opening 5a on the front side of the case body 5, The connecting wire 3 is not directly connected to the manual lever 4,
The manual lever 4 and the connecting wire 3 are connected via the link body 8, and a fixed member 10 fixed to the link body 8 is guided by the guide hole 11b to move up and down, and the rotation operation of the manual lever 4 is performed. Fixing member 10 associated with
Since the connecting wire 3 is configured to be pulled by the vertical movement of the connecting wire 3, the connecting wire 3 is pulled as a guide when the brake is released, unlike the conventional device in which the pulling direction of the connecting wire 3 is changed by a guide roller or the like. There is no possibility of receiving large operating resistance from the roller section. Therefore, the manual lever 4 can be operated smoothly and easily with a small operating force, and the operability is significantly improved. Moreover, since the connecting wire 3 does not come into contact with other members such as guide rollers, the connecting wire 3 will not be damaged, and cutting of the connecting wire 3 can be reliably prevented. In the event of a disaster, there is no fear that the connecting wire 3 will be cut and the brake cannot be released, and the opening/closing body can always be closed with reliable operation.

Furthermore, in this embodiment, the manual lever 4 can be held in the open position by the action beyond the dead center without using a stopper or the like, so the brake can be returned by moving the manual lever 4 to the closed position. This can be accomplished simply by operating the brake, and the operability when returning the brake is also improved.

[Operation and Effect] In summary, since the present invention is constructed as described above, the connecting wire is pulled through the link body when the manual lever is operated. The other end of the link body moves downward under the guidance of the guide body,
This causes the connecting wire to be pulled downward. Therefore, there is no need to adjust the pulling direction of the connecting wire by providing a guide roller unlike in the conventional case in which the connecting wire is directly connected to the manual lever, and the connecting wire is subject to large operating resistance during the manual closing operation. Nor. As a result, the operating force required to operate the manual lever can be made as small as possible, which enables smooth and light operation, significantly improving the operability of the manual closing device. Moreover, since the connecting wire can be prevented from being damaged due to contact with other members, reliable operation over a long period of time is ensured and reliability is improved.

In addition, in the manual lever release device, if the lever pivot portion of the link body is configured to extend below the imaginary line connecting the wire connecting portion and the case body pivot portion of the manual lever, there is no need to provide a separate stopper. Since the manual lever can be held in the open position by the action beyond the dead center, the structure is also simplified, which is extremely convenient.

[Brief explanation of the drawing]

The drawings show an embodiment of a manual closing device for an opening/closing body according to the present invention, in which FIG. 1 is a longitudinal sectional view of the manual closing device, FIG. 2 is a partially cutaway front view of the same, and FIG. The figure is a plan view of the fixing member, FIG. 4 is a front view of the same, and FIG. 5 is a longitudinal sectional view of the same. In the figure, 1 is a manual closing device, 3 is a connecting wire, 4
is a manual lever, 5 is a case body, 5a is an opening, 8
is a link body, 10 is a fixed member, 11 is a frame,
11b is a guide hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. By opening the manual lever pivotally supported at the lower end of the opening on the front of the case body toward the front and downward, the connecting wire is pulled downward and the brake on the opening/closing body side is released. In the manual closing device, the manual lever is provided with a link body whose one end is pivoted at a position above the pivot point with the case body, and the other end of the link body is connected to the case body. The body is configured to be guided by a guide body provided on the body side so as to be movable in the vertical direction, and the other end of the link body is guided by the guide body and moved downward by the link operation accompanying the opening operation of the manual lever, and A manual closing device for an opening/closing body, characterized in that the connecting wire is connected to the other end of the link body. 2 The positional relationship between the case body pivot part at the lower end of the manual lever, the lever pivot part at one end of the link body, and the wire connection part at the other end of the link body is such that when the manual lever is operated to the open position, the lever pivot part of the link body The manual opening/closing body according to claim 1 of claim 1, wherein the opening/closing body is positioned below an imaginary line connecting the wire connecting portion and the pivot portion of the case body of the manual lever. Closing device.