JP6872348B2 - Fixing device - Google Patents

Description

The present invention relates to a fixing device for fixing a central pillar provided between each shutter to the floor when a plurality of shutters are connected to each other.

When connecting a plurality of shutters, a center pillar is built between the shutters, and the left and right sides of the center pillar are used as guides to raise and lower each shutter. A fixing device is provided on the center pillar to build the center pillar and fix it to the floor. A drop bar is provided in this fixing device, and the drop bar is fitted into a recess provided on the floor to fix the center pillar to the floor. However, when the shutter receives wind pressure or is subjected to excessive vibration such as an earthquake, there is a problem that the drop bar floats up and comes off from the recess of the floor.

In order to solve such a problem, for example, in Patent Document 1 and Patent Document 2, recesses are formed at two places of the drop bar, and the drop bar is fitted into the recess of the floor and the drop bar is pulled out. In this state, the ball body fits into the recess of the drop bar to regulate the operation of the drop bar. As a result, even when vibration or the like is applied, the state in which the drop rod is fitted into the concave portion of the floor is maintained, and problems such as the center pillar coming off can be prevented. In addition to such a configuration, in Patent Document 1, when the shutter is closed, the end portion of the seat plate of the shutter is placed on the contact plate to prevent the drop bar from moving. Further, in Patent Document 2, the contact metal fitting provided on the drop bar abuts on the interlocking member, and the movement of the interlocking member is restricted by the shutter curtain, so that the drop bar is maintained in the recessed portion of the floor. I am trying to do it.

These techniques assume that the drop bar is inserted into the recess of the floor until the ball is fitted into the recess of the drop bar. However, dust and dirt are likely to accumulate in the recesses on the floor, and if dust and the like accumulate in the recesses, the drop rod may not be sufficiently inserted into the recesses on the floor. In such a situation, the fitting of the drop rod and the recess of the floor is insufficient, and the fitting of the ball body and the recess of the drop rod is also insufficient or not fitted. was there. If it is used in such a state, the fixing device does not function and a problem such as the center pillar coming off occurs.

On the other hand, the central pillar locking device for a shutter described in Patent Document 3 has a rotating plate pivotally supported in a case, and the rotating plate is locked to a drop bar and a coil spring. Is described. In this configuration, if the drop bar is lowered below a certain point, it is urged downward, and if it is raised above a certain point, it is urged upward. Therefore, if the drop bar is lowered below a certain point, the drop bar is urged downward even if some dust or the like is accumulated in the recess of the floor, and the fitting between the recess of the floor and the drop bar is maintained. As a result, it is possible to avoid a problem that the center pillar comes off. However, this technique has various problems such as a large number of parts such as using a rotating plate to urge the drop bar and an increase in cost.

Japanese Unexamined Patent Publication No. 05-287972 Japanese Unexamined Patent Publication No. 2005-048508 Japanese Unexamined Patent Publication No. 06-235283

The present invention has been made in view of the above circumstances, and even when the drop bar is not sufficiently inserted into the recess of the floor, the center pillar can be reliably fixed and the center pillar can be prevented from coming off. It is an object of the present invention to provide a fixing device.

The present invention is a fixing device for fixing the center pillar provided between the shutters to be connected to the floor, the drop rod which is moved downward when fixing the center pillar and fitted into the recess provided in the floor. The first regulation part and the second regulation part are formed of an elastic material, and a downward force is applied to the drop rod. An upward force is applied to the lower urging portion and the drop rod formed in a convex arc shape. It has an urging means provided with an upper urging portion formed in a convex arc shape to be added, and the urging means when the drop bar is moved downward from the first regulating portion, the lower urging means is provided. When a downward force is applied to the drop rod and the movement of the drop rod above the first regulation portion is restricted by the portion, and the drop rod is moved upward from the second regulation portion, the upper portion is described. It is a fixing device characterized in that an upward force is applied to the drop rod by an urging portion and the movement of the drop rod below the second regulation portion is restricted.

A deterrent portion formed in a concave shape is provided between the first restricting portion and the second restricting portion of the urging means, and further, the urging means comes into contact with the deterrent portion of the urging means. It is preferable to have a deterrent means for suppressing the deformation of the means.

Alternatively, the deterrent portion formed in a convex shape is provided between the first restricting portion and the second restricting portion of the urging means, and further, the deterrent portion of the urging means is in contact with the deterrent portion. It may be configured to have a deterrent means for suppressing the deformation of the urging means.

The drop bar may be labeled to indicate whether or not the drop bar has been pushed down to a position where it is inserted into a recess provided on the floor.

According to the present invention, when fitting the drop rod into the recess of the floor, for example, even if dust or the like is accumulated in the recess, the drop rod can be attached by moving the drop rod below the first regulating portion of the urging means. The lower urging portion of the urging means urges a downward force to prevent the drop bar from coming out of the recess. Furthermore, even when strong vibration or force is applied due to wind pressure or water pressure, the movement of the drop rod above the first regulation part of the regulation means is restricted, so even if it depends on the lower urging part of the urging means. Even if a force greater than the downward urging force is applied, the drop bar will not come out of the recess in the floor and the center pillar will not come off.

Furthermore, when the drop rod is moved above the second regulation part of the urging means, the upper urging part of the urging means applies an upward force to the drop rod, so the drop rod is pulled up and fixed to the floor surface. When released, the drop rod does not descend from the pulled-up state and does not hinder the removal and attachment of the center pillar. Furthermore, when the drop bar moves above the second regulatory section of the urging means, the movement of the drop bar below the second regulatory section of the regulating means is restricted, so that the drop bar descends from the pulled-up state. Can be prevented.

If a deterrent means for suppressing the deformation of the elastic material is provided, the movement of the drop rod can be restricted even with the elastic material itself in a state where the drop rod is moved downward or further moved upward. This makes it possible to more firmly prevent the drop bar from coming off the recess on the floor.

If the drop bar is provided with a display indicating whether or not the drop bar has been pushed down to the position where it is inserted into the recess provided on the floor, the drop bar is fitted or fitted in the recess on the floor. The operator can visually confirm that the alignment is incomplete, and the drop bar can be operated more reliably.

It is a block diagram which shows the 1st Embodiment of the fixing device of this invention. It is a block diagram which shows an example of the shutter including the fixing device of this invention. It is an enlarged view of the lower part of the middle pillar including the fixing device of this invention. It is explanatory drawing of an example of the operation in 1st Embodiment of the fixing device of this invention. It is explanatory drawing (continuation) of an example of the operation in 1st Embodiment of the fixing device of this invention. It is a block diagram which shows the 2nd Embodiment of the fixing device of this invention. It is explanatory drawing of an example of the operation in 2nd Embodiment of the fixing device of this invention. It is explanatory drawing (continuation) of an example of the operation in 2nd Embodiment of the fixing device of this invention. It is a block diagram which shows the 3rd Embodiment of the fixing device of this invention. It is a block diagram which shows the 4th Embodiment of the fixing device of this invention.

FIG. 1 is a configuration diagram showing a first embodiment of the fixing device of the present invention, FIG. 2 is a configuration diagram showing an example of a shutter including the fixing device of the present invention, and FIG. 3 is a configuration diagram showing the fixing device of the present invention. It is an enlarged view of the lower part of the middle pillar including. In the figure, 1 is a shutter curtain, 2 is a guide rail, 3 is a center pillar, 4 is a floor surface, 5 is a recess, 11 is a fixing device, 12 is a drop bar, 13 is a knob, 21 is a case, and 22 is an urging member. , 23 is the first regulation part, 24 is the second regulation part, 25 is the lower urging part, 26 is the upper urging part, 27 is the deterrent part, 31 is the protrusion, 32 is the insertion display part, 33 is the deterrent member, 41. Is the lowest position, 42 is the lower position, 43 is the upper position, and 44 is the uppermost position.

The shutter is provided in the opening, but if the opening is wide, a plurality of shutters will be connected. FIG. 2 shows an example in which two shutters are connected as an example. Of course, 3 or more may be connected. A guide rail 2 is provided on the side wall side of the opening of each shutter curtain 1. Further, a central pillar 3 is detachably installed between the shutter curtains 1. Similar to the guide rail 2, a groove for guiding the shutter curtain 1 is provided in the vertical direction on the shutter curtain 1 side (both sides) of the center pillar 3, and the shutter curtain 1 is located between the guide rail 2 and the center pillar 3. Ascends and descends.

At the lower part of the center pillar 3, a fixing device 11 for fixing the center pillar 3 to the floor surface 4 is provided. Further, as shown in FIG. 3, a recess 5 is provided on the floor surface 4. After the center pillar 3 is built at a predetermined position, the drop rod 12 of the fixing device 11 is moved downward to be inserted into the recess 5 of the floor surface 4 and fitted, whereby the center pillar 3 is fixed to the floor surface 4. Will be done.

A first embodiment of the fixing device 11 is shown in FIG. An urging member 22 is provided in the case 21 of the fixing device 1. The urging member 22 is an elastic material, and in this example, it is formed of a leaf spring. The end portion of the urging member 22 is fixed to the upper wall and the lower wall of the case 21, and is stretched between them. Further, the urging member 22 is formed with protrusions that serve as the first regulating portion 23 and the second regulating portion 24. A convex arc shape is formed from the portion fixed to the lower wall of the case 21 to the first regulating portion 23, and this portion serves as the lower urging portion 25. Further, a convex arc shape is formed from the portion fixed to the upper wall of the case 21 to the second regulating portion 24, and this portion becomes the upper urging portion 26. Further, the first regulating section 23 to the second regulating section 24 are formed in a concave arc shape, and this portion serves as a restraining section 27.

When the lower urging portion 25 moves the drop rod 12 downward from the lower position 42, the lower urging portion 25 applies a downward force to the drop rod 12. Further, when the drop rod 12 moves below the lower position 42, the first regulation unit 23 regulates the movement of the drop rod 12 above the lower position 42 with a stronger elastic force than the lower urging portion 25. .. The lower position 42 is a position higher than the lowermost position 41, which is the position where the drop rod 12 is inserted deepest into the recess 5 provided on the floor surface 4, and dust and the like are deposited in the recess 5. Even if it is accumulated, the drop rod 12 is locked with the recess 5, and it is preferable to set the position so that the drop rod 12 does not come off from the recess 5 even if vibration or the like is applied. In this example, the lower position 42 is the position where the first regulating portion 23 restricts the movement of the drop bar 12 upward, and is the upper limit position where the lower urging portion 25 applies a downward force. ..

When the drop rod 12 is moved upward from the upper position 43, the upper urging portion 26 applies an upward force to the drop rod 12. Further, when the drop rod 12 moves above the upper position 43, the second regulation unit 24 regulates the movement of the drop rod 12 below the upper position 43 with a stronger elastic force than the upper urging portion 26. .. The upper position 43 may be a position in which the drop rod 12 is separated from the recess 5 provided on the floor surface 4, and may be a position that does not hinder the removal of the middle pillar 3. The upper position 43 may be a position lower than the uppermost position 44, which is the position in which the drop bar 12 is most pulled up. In this example, the upper position 43 is a position where the second regulating portion 24 restricts the movement of the drop bar 12 downward, and is a lower limit position where the upper urging portion 26 applies an upward force. ..

The drop rod 12 is provided with a protrusion 31. The protrusion 31 moves up and down as the drop rod 12 moves up and down. The urging member 22 is arranged so that the first regulating portion 23 and the second regulating portion 24 provided on the urging member 22 are on the movement path of the protrusion 31 provided on the drop bar 12. To.

When the tip of the drop bar 12 is at the lower position 42, the protrusion 31 is at the position of the convex portion of the first regulating portion 23 or the protrusion 31 is at the position where it abuts on the lower surface of the first regulating portion 23. Further, when the tip of the drop rod 12 is at the upper position 43, the protrusion 31 is located at the position of the convex portion of the second regulating portion 24 or the protrusion 31 is located at the position where the protrusion 31 abuts on the upper surface of the second regulating portion 24.

The shape of the protrusion 31 is arbitrary, but in the case of a cylindrical shape, for example, if the center position of the cylinder is slightly lower than the position of the convex portion of the first regulating portion 23, the elastic force of the urging member 22 As a result, the convex portion of the first regulating portion 23 is pushed out so as to slide on the cylindrical surface of the protrusion 31, and the protrusion 31 is urged downward. Further, the protrusion 31 is located at a position equal to or lower than the position where the protrusion 31 abuts on the lower surface of the first regulating portion 23, and the protrusion 31 is in contact with the lower urging portion 25 of the urging member 22 due to the elastic force of the urging member 22. 31 receives a downward force and therefore the drop bar 12 receives a downward force. As a result, even if the drop bar 12 is not completely inserted into the recess 5 of the floor surface 4, the drop bar 12 is made difficult to come out of the recess 5 by the downward urging force. Further, when the drop rod 12 tries to rise against the downward force of the lower urging portion 25, the movement of the protrusion 31 upward is restricted by the first regulating portion 23, and the drop rod 12 comes from the recess 5 of the drop rod 12. Prevent it from coming off.

Further, if the central position of the cylindrical shape of the protrusion 31 is slightly higher than the position of the convex portion of the second regulating portion 24, the convex portion of the second regulating portion 24 becomes the protrusion 31 due to the elastic force of the urging member 22. The protrusion 31 is urged upward while being pushed out so as to slide on the cylindrical surface of the above. Further, in a state where the protrusion 31 is at a position equal to or higher than the position where it abuts on the upper surface of the second regulating portion 24 and the upper urging portion 26 of the urging member 22 abuts the protrusion 31, the protrusion is due to the elastic force of the urging member 22. 31 receives an upward force and therefore the drop bar 12 receives an upward force. As a result, the drop rod 12 is maintained in the pulled out state. Further, the second regulation unit 24 also restricts the drop rod 12 from moving downward to prevent the drop rod 12 from inadvertently moving downward.

Since the urging member 22 is made of an elastic material as described above, if the drop rod 12 is raised or lowered by applying a certain amount of force, the protrusion 31 becomes the first regulating portion 23 or the second regulating portion 23. 24 can be pushed and passed through the convex portion of the first regulating portion 23 or the second regulating portion 24.

As described above, the shape of the protrusion is arbitrary. For example, if the cross-sectional shape of the protrusion 31 has a convex shape on the urging member 22 side, the operation is the same as in the case of the above-mentioned cylindrical shape. Further, when the shape of the protrusion 31 is, for example, a shape having a flat surface on the side of the urging member 22, the drop rod is in a state where the convex portions of the first regulating portion 23 and the second regulating portion 24 are in contact with the flat surface. No downward or upward force is urged on the 12, but the 12 is urged downward or upward at a position where it abuts on the lower surface of the first regulating portion 23 or at a position where it abuts on the upper surface of the second regulating portion 24. Become. In such a case, when the tip of the drop rod 12 is in the lower position 42, the protrusion 31 is in a position where it abuts on the lower surface of the first regulating portion 23. Further, when the tip of the drop rod 12 is at the upper position 43, the protrusion 31 may be at a position where it abuts on the upper surface of the second regulating portion 24.

In this example, the drop bar 12 is further formed with an insertion display unit 32. With the drop bar 12 moved upward, the insertion display unit 32 is exposed at the upper part of the case 21, and is visually inspected to indicate that the insertion display unit 32 is not fixed. Further, when the drop bar 12 is moved downward, the insertion display unit 32 is hidden by the case 21. For example, the insertion display unit 32 is inserted into the case 21 in a state where the drop bar 12 is inserted into the recess 5 provided on the floor surface 4, the lower position 42 or the lowest position 41 is inserted, and the center pillar 3 is fixed. The insertion display unit 32 may be formed so as to be hidden. As the display method of the insertion display unit 32, various methods such as coloring, making the surface processing different from other parts, and displaying the position in increments can be considered. Of course, the display method of the insertion display unit 32 is not limited to these examples, and any known method can be adopted. Further, the insertion display unit 32 may be configured without being formed.

A deterrent member 33 is further provided in the case 21 of the fixing device 1. The restraining member 33 is interlocked with the knob 13 shown in FIG. 3, and the restraining member 33 is configured to move in and out by moving the knob 13 to the left and right. With the restraining member 33 protruding, the tip of the restraining member 33 comes into contact with the restraining portion 27 of the urging member 22, and further presses the restraining portion 27.

When the restraining member 33 abuts and presses against the restraining portion 27 of the urging member 22, the movements of the first regulating portion 23 and the second regulating portion 24 are suppressed. Therefore, even if the drop rod 12 is operated to move up or down and the protrusion 31 comes into contact with the first regulation unit 23 or the second regulation unit 24, the first regulation unit 23 or the second regulation unit 24 Is not deformed so as to be pushed by the protrusion 31, so that the protrusion 31 cannot pass through the convex portion of the first regulating portion 23 or the second regulating portion 24, and the movement of the drop rod 12 is suppressed. Become.

For example, if the protrusion 31 is located below the first regulating portion 23 and the restraining member 33 is in contact with or further pressed against the restraining portion 27 of the urging member 22, the protrusion 31 is formed by the first regulating portion 23. It cannot move up beyond the convex part. When the protrusion 31 is below the first regulating portion 23, the drop rod 12 is fitted in the recess 5 of the floor surface 4, and this state is maintained by the restraining member 33. Therefore, it is possible to prevent the drop rod from coming off from the recess 5 of the floor surface 4, and the center pillar 3 does not come off.

Further, for example, when the protrusion 31 is above the second regulating portion 24 and the restraining member 33 is in contact with or further pressed against the restraining portion 27 of the urging member 22, the protrusion 31 is in the second regulating portion 24. It is not possible to move down beyond the convex part of. As a result, the state in which the drop rod 12 is pulled up is maintained, and the drop rod 12 does not fall even if some force is applied. As a result, for example, it is possible to prevent problems such as the drop bar 12 being lowered when the center pillar 3 is built, which hinders the work of building the center pillar 3.

In addition, in order to prevent the drop rod 12 from coming off from the recess 5 of the floor surface 4, in the above configuration, in order to regulate the operation of the first regulating portion 23 and the lower urging portion 25, and the drop rod 12 by these. It suffices if the protrusion 31 provided on the drop bar 12 is provided, and other configurations may be appropriately provided.

4 and 5 are explanatory views of an example of operation in the first embodiment of the fixing device of the present invention. Before building the center pillar 3, the fixing device 11 is in the state shown in FIG. That is, the drop rod 12 is pulled up, and the protrusion 31 provided on the drop rod 12 is located above the second regulating portion 24 of the urging member 22. In this state, the drop rod 12 tries to descend due to its own weight, but the protrusion 31 abuts on the upper urging portion 26 of the urging member 22 and receives an upward force to prevent the drop rod 12 from descending. Further, the lowering of the protrusion 31 is regulated by the second regulating unit 24. As a result, it is possible to avoid a problem that the drop bar 12 is lowered and becomes an obstacle when the central pillar 3 is built. In this state, the insertion display unit 32 is exposed from the case 21, indicating that the drop bar 12 is not inserted.

Although not shown in FIG. 1, it is preferable that the deterrent member 33 is in contact with and pressed against the deterrent portion 27 of the urging member 22. By making such a state, the movement of the second regulation unit 24 is suppressed, and the protrusion 31 of the drop bar 12 cannot get over the second regulation unit 24. For example, if the drop bar 12 is inadvertently pushed down, or if vibration or some downward pressure is applied to the drop bar 12, the drop bar 12 will drop and the construction of the center pillar 3 will be hindered. , It can be surely prevented as compared with the case where the restraining member 33 is not used.

After the center pillar 3 is built, when the center pillar 3 is fixed to the floor surface 4, the deterrent member 33 is in contact with and pressed against the urging member 22, and the knob 13 is slid. The contact between the restraining member 33 and the urging member 22 is released. Then, the tip of the drop bar 12 is aligned so as to be inserted into the recess 5 of the floor surface 4, and the drop bar 12 is pushed down.

When the drop rod 12 is pushed down by applying a certain amount of force, the protrusion 31 of the drop rod 12 pushes the urging member 22, and as shown in FIG. 4A, the urging member 22 is deformed inward. Then, the protrusion 31 of the drop bar 12 can move downward beyond the second regulation portion 24. The end of the drop bar 12 will move below the upper position 43.

When the drop rod 12 is further pushed down, the protrusion 31 of the drop rod 12 comes into contact with the first regulating portion 23. Also in this case, when the drop rod 12 is pushed down by applying a certain amount of force, the protrusion 31 of the drop rod 12 pushes the urging member 22, and the urging member 22 is pushed inward as in the case where the second regulating portion 24 is crossed. Deform. Then, the protrusion 31 of the drop bar 12 can move downward beyond the first regulation portion 23. The end of the drop bar 12 will move below the lower position 42. This state is shown in FIG. 4 (B).

In this state, the insertion display unit 32 exists inside the case 21, and the insertion display unit 32 is hidden behind the case 21 and cannot be seen from the outside. This indicates that the drop bar 12 has been inserted. Even if the tip of the drop bar 12 is not completely lowered to the lowest position 41, if it is lowered to the lower position 42, the drop bar 12 and the recess 5 of the floor surface 4 cannot be disengaged from each other. The insertion display unit 23 may be configured to indicate that the drop bar 12 is in the inserted state when the tip of the drop bar 12 is lowered to the lower position 42.

The drop rod 12 receives a downward force by the lower urging portion 25 and tries to descend due to its own weight. Therefore, if there is no problem with the recess 5 of the floor surface 4, the protrusion 31 of the drop rod 12 descends to the lower surface inside the case 21, the tip of the drop rod 12 descends to the lowest position 41, and the center pillar 3 is fixed. Will be done.

However, dirt, dust, and the like tend to collect in the recess 5 of the floor surface 4, and if such a deposit is present, the drop rod 12 may not be fully lowered. Even in such a case, if the protrusion 31 of the drop rod 12 is present below the first regulation portion 23, the drop rod 12 will not be lifted and the fitting with the recess 5 of the floor surface 4 will not be disengaged. That is, as shown in FIG. 4B, even when the drop rod 12 is lifted to the state where the protrusion 31 of the drop rod 12 is in contact with the urging member 22, the protrusion 31 of the drop rod 12 is formed by the first regulating unit 23. The rise is regulated. Further, when the protrusion 31 of the drop rod 12 comes into contact with the lower urging portion 25, it receives a downward force and the rise of the drop rod 12 is suppressed. As a result, even if the tip of the drop bar 12 is not completely lowered into the recess 5 of the floor surface 4, it is possible to prevent the drop bar 12 from coming off from the recess 5 of the floor surface 4.

Further, when the shutter receives vibration, wind pressure, water pressure, or the like, the drop rod 12 may try to rise together with the center pillar 3. Even in such a case, the protrusion 31 of the drop bar 12 is urged downward by the lower urging portion 25 to suppress the lifting, and the first regulating portion 23 further regulates the ascending. As a result, it is possible to prevent the drop bar 12 from rising and prevent the drop bar 12 from being disengaged from the recess 5 on the floor surface 4.

Further, as shown in FIG. 5, it is preferable that the deterrent member 33 is in contact with and pressed against the deterrent portion 27 of the urging member 22. By making such a state, the movement of the first regulation unit 23 is suppressed, and the protrusion 31 of the drop bar 12 cannot get over the first regulation unit 23. For example, in the state of FIG. 4B, the protrusion 31 of the drop rod 12 presses and deforms the urging member 22 due to strong vibration, wind pressure, water pressure, etc. on the shutter, and the protrusion 31 of the drop rod 12 is the first regulating portion. It is conceivable that it will rise above 23. If the restraining member 33 is in contact with and pressed against the restraining portion 27 of the urging member 22, the restraining member 33 suppresses the deformation of the urging member 22 even in the above-mentioned case, so that the drop rod 12 The protrusion 31 does not exceed the first regulation portion 23, and the drop rod 12 can be reliably prevented from coming off from the recess 5 on the floor surface 4.

When removing the center pillar 3, the operation opposite to the above-mentioned operation may be performed. For example, by sliding the knob 13 so that the restraining member 33 does not come into contact with the urging member 22, and then pulling up the dropping rod 12, the protrusion 31 of the dropping rod 12 deforms the urging member 22 to form the first. If the drop rod 12 is pulled up after getting over the regulation portion 23, the protrusion 31 of the drop rod 12 deforms the urging member 22 and rises over the second regulation portion 24. As a result, the state shown in FIG. 1 is obtained, and even if the drop bar 12 is released, the state does not descend. In this state, the tip of the drop bar 12 is detached from the recess 5 of the floor surface 4, and the center pillar 3 can be removed.

FIG. 6 is a configuration diagram showing a second embodiment of the fixing device of the present invention. The reference numerals in the drawings are the same as those in the first embodiment described above, and the points different from those in the first embodiment will be mainly described. In the figure, 45 is the central position. In this second embodiment, the shape of the urging member 22 is different.

The urging member 22 in the second embodiment has a different shape from that in the first embodiment. The urging member 22 is formed with protrusions that serve as the first regulation portion 23 and the second regulation portion 24, and the first regulation portion 23 to the second regulation portion 24 are formed in a convex arc shape to suppress the urging member 22. It becomes part 27. The portion fixed to the lower wall of the case 21 to the first regulating portion 23 and the portion fixed to the upper wall of the case 21 to the second regulating portion 24 are also formed in a convex arc shape as a whole. As a result, the case 21 is formed so that the lower wall to the upper wall have an arc shape except for the first regulation portion 23 and the second regulation portion 24.

In the urging member 22 having such a shape, the portion below the central portion (the central portion of the restraining portion 27) is the lower urging portion 25, and the drop bar 12 is located below the vicinity of the central position 45. , Apply a downward force to the drop bar 12. Further, when the portion above the central portion of the urging member 22 (the central portion of the restraint portion 27) becomes the upper urging portion 26 and the drop rod 12 is located above the vicinity of the central position 45, the drop rod 12 is used. Apply upward force. As described above, in the second embodiment, a downward force is applied to the drop rod 12 at the lower portion and an upward force is applied to the drop rod 12 at the upper portion with the vicinity of the central portion of the urging member 22 as a boundary. It will be.

7 and 8 are explanatory views of an example of operation in the second embodiment of the fixing device of the present invention. The description overlapping with the example of the operation in the first embodiment described with reference to FIGS. 4 and 5 may be omitted. Before building the center pillar 3, the fixing device 11 is in the state shown in FIG. 6, and the drop rod 12 is pulled up and the protrusion 31 provided on the drop rod 12 is the second regulating portion 24 of the urging member 22. It is in a state of being located above. This state is the same as the description in the first embodiment.

In this example as well, the insertion display unit 32 is exposed from the case 21 in this state, indicating that the drop bar 12 is not inserted. Further, it is preferable that the restraining member 33 is in contact with and pressed against the restraining portion 27 of the urging member 22. By making such a state, the upward urging force by the upper urging portion 26 is increased, the movement of the second regulating portion 24 is suppressed, and the protrusion 31 of the drop bar 12 can get over the second regulating portion 24. It disappears. For example, if the drop bar 12 is inadvertently pushed down, or if vibration or some downward pressure is applied to the drop bar 12, the drop bar 12 will drop and the construction of the center pillar 3 will be hindered. , It can be surely prevented as compared with the case where the restraining member 33 is not used.

After the center pillar 3 is built, when the center pillar 3 is fixed to the floor surface 4, the deterrent member 33 is in contact with and pressed against the urging member 22, and the knob 13 is slid. The contact between the restraining member 33 and the urging member 22 is released. Then, the tip of the drop bar 12 is aligned so as to be inserted into the recess 5 of the floor surface 4, and the drop bar 12 is pushed down.

When the drop rod 12 is pushed down by applying a certain amount of force, the protrusion 31 of the drop rod 12 pushes the urging member 22, and the urging member 22 is deformed inward. Then, the protrusion 31 of the drop bar 12 can move downward beyond the second regulation portion 24. The end of the drop bar 12 will move below the upper position 43.

Even after the protrusion 31 of the drop rod 12 has passed the second regulating portion 24, the tip of the drop rod 12 is located above the vicinity of the central position 45, and the protrusion 31 of the drop rod 12 is as shown in FIG. 7 (A). While is above the central portion of the urging member 22, an upward force exerted by the upper urging portion 26 tries to return the drop rod 12 upward. Then, when the tip of the drop rod 12 is lowered below the vicinity of the central position 45 and the protrusion 31 of the drop rod 12 is below the vicinity of the central portion of the urging member 22 as shown in FIG. 7 (B), this time. A downward force is exerted by the lower urging portion 25, and the drop bar 12 is urged downward. Note that FIG. 7 shows an enlarged relationship between the urging member 22 and the protrusion 31 of the drop bar 12.

As described above, in the second embodiment, even if the protrusion 31 of the drop rod 12 is present between the first regulation unit 23 and the second regulation unit 24, the drop rod 12 is as upward or downward as possible. To urge. As a result, when the drop rod 12 is urged upward, the tip of the drop rod 12 is made as close to the upper position 43 as possible, and the state in which the drop rod 12 is pulled out is maintained as much as possible. Further, when the drop bar 12 is urged downward, the tip of the drop bar 12 should be as close to the lower position 42 as possible so that the drop bar 12 is inserted into the recess 5 of the floor surface 4 as much as possible. I have to.

When the drop rod 12 is further pushed down, the protrusion 31 of the drop rod 12 pushes the urging member 22, and the urging member 22 is deformed inward in the same manner as when the second regulating portion 24 is crossed, and the protrusion of the drop rod 12 is formed. 31 moves downward beyond the first regulation unit 23. The end of the drop bar 12 will move below the lower position 42. This state is shown in FIG. 8 (A). In this state, the insertion display unit 32 exists inside the case 21, and the insertion display unit 32 is hidden behind the case 21 and cannot be seen from the outside. As a result, it is displayed that the drop bar 12 has been inserted.

Since the drop rod 12 receives a downward force from the lower urging portion 25 and tries to descend due to its own weight, the protrusion 31 of the drop rod 12 is inside the case 21 as long as the recess 5 on the floor surface 4 is not hindered. The tip of the drop rod 12 is lowered to the lowest position 41, and the center pillar 3 is fixed.

If there is a stagnation in the recess 5 of the floor surface 4, or if the shutter is subjected to vibration, wind pressure, water pressure, or the like, the drop bar 12 may be lifted. For example, as shown in FIG. 8A, even when the drop rod 12 is lifted to the state where the protrusion 31 of the drop rod 12 is in contact with the urging member 22, the protrusion 31 of the drop rod 12 is provided by the first regulation unit 23. The rise is regulated. Further, when the protrusion 31 of the drop rod 12 comes into contact with the lower urging portion 25, it receives a downward force and the rise of the drop rod 12 is suppressed. As a result, even if the tip of the drop bar 12 is not completely lowered into the recess 5 of the floor surface 4, if the protrusion 31 of the drop bar 12 is below the first regulating portion 23, the drop bar 12 is lifted. It is possible to prevent the floor surface 4 from being disengaged from the recess 5 and to maintain the state in which the center pillar 3 is fixed.

Further, as shown in FIG. 8B, it is preferable that the deterrent member 33 is in contact with and pressed against the deterrent portion 27 of the urging member 22. By making such a state, the movement of the first regulation unit 23 is suppressed, and the protrusion 31 of the drop bar 12 cannot get over the first regulation unit 23. As a result, even if strong vibration, wind pressure, water pressure, or the like is applied to the shutter, it is possible to reliably prevent the drop rod 12 from coming out of the recess 5 of the floor surface 4.

When removing the center pillar 3, the operation opposite to the above-mentioned operation may be performed. For example, by sliding the knob 13 so that the restraining member 33 does not come into contact with the urging member 22, and then pulling up the dropping rod 12, the protrusion 31 of the dropping rod 12 deforms the urging member 22 to form the first. If the drop rod 12 is pulled up after getting over the regulation portion 23, the protrusion 31 of the drop rod 12 deforms the urging member 22 and rises over the second regulation portion 24. As a result, the state shown in FIG. 6 is obtained, and even if the drop bar 12 is released, the state does not descend. In this state, the tip of the drop bar 12 is detached from the recess 5 of the floor surface 4, and the center pillar 3 can be removed.

In this second embodiment, even if the protrusion 31 of the drop bar 12 is located between the first regulation portion 23 and the second regulation portion 24, if it is above the center, it is dropped by the upper urging portion 26. The rod 12 is urged upward, and if it is below the center, the lower urging portion 25 urges the drop rod 12 downward. Therefore, the drop bar 12 takes either a pulled-up state or a state of being inserted into the recess 5 of the floor surface 4. As a result, even if the user operates the drop bar 12 halfway, the drop bar 12 can be put into any state.

FIG. 9 is a configuration diagram showing a third embodiment of the fixing device of the present invention. The reference numerals in the drawings are the same as those in the first and second embodiments described above, and the differences from the first and second embodiments will be mainly described.

In this third embodiment, as the urging member 22, the overall shape is similar to that of the urging member 22 used in the second embodiment. However, in this third embodiment, the first regulation unit 23 and the second regulation unit 24 provided on the urging member 22 are not provided in the second embodiment, and the first regulation unit 23 and the second regulation unit 23 are not provided. 2 The function of the regulation unit 24 is also configured by the deterrent member 33. That is, the deterrent member 33 is in contact with and pressed against the urging member 22, and the abutting portion between the deterrent member 33 and the urging member 22 is at a position of blocking the movement path of the protrusion 31 of the drop rod 12. The protrusion 31 of the drop rod 12 cannot move beyond the contact portion between the restraining member 33 and the urging member 22. As a result, the function of the first regulation unit 23 that does not raise the protrusion 31 of the drop rod 12 can be fulfilled, and the function of the second regulation unit 24 that does not lower the protrusion 31 of the drop rod 12 can be fulfilled.

An example of the operation in the third embodiment of the fixing device of the present invention will be described. The description that overlaps with the example of the operation in the first and second embodiments described with reference to FIGS. 4, 5, 7, and 8 may be omitted. Before the middle pillar 3 is built, the fixing device 11 is in the state shown in FIG. 9A, the drop rod 12 is pulled up, and the protrusion 31 of the drop rod 12 is the upper urging portion 26 of the urging member 22. It is in a state of being located in. In this state, the protrusion 31 is urged with an upward force by the upper urging portion 26, and the drop rod 12 is maintained in a pulled-up state. In this state, the insertion display unit 32 is exposed to the outside of the case 21, indicating that the drop bar 12 is not inserted.

Of course, by keeping the deterrent member 33 in contact with and pressing the deterrent portion 27 of the urging member 22, the path of the protrusion 31 of the drop rod 12 moving downward is blocked, and the drop rod 12 vibrates or something. Even when downward pressure is applied, it is possible to prevent problems such as the drop rod 12 descending and hindering the construction of the center pillar 3.

After the center pillar 3 is built, when the center pillar 3 is fixed to the floor surface 4, the deterrent member 33 is in contact with and pressed against the urging member 22, and the knob 13 is slid. The contact between the restraining member 33 and the urging member 22 is released. Then, the tip of the drop bar 12 is aligned so as to be inserted into the recess 5 of the floor surface 4, and the drop bar 12 is pushed down.

When the drop rod 12 is pushed down by applying a certain amount of force, the protrusion 31 of the drop rod 12 pushes the urging member 22, and the urging member 22 is deformed inward. Then, when passing near the central portion of the urging member 22, the lower urging portion 25 urges the protrusion 31 of the drop rod 12 downward to push down the drop rod 12. In addition, it tries to descend due to the weight of the drop bar 12. As a result, if the recess 5 of the floor surface 4 is not hindered, the protrusion 31 of the drop rod 12 descends to the lower surface inside the case 21, the tip of the drop rod 12 descends to the lowest position 41, and the center pillar 3 It will be fixed. In this state, the insertion display unit 32 exists inside the case 21, and the insertion display unit 32 is hidden behind the case 21 and cannot be seen from the outside. As a result, it is displayed that the drop bar 12 has been inserted.

Further, the knob 13 is slid to bring the restraining member 33 into contact with and pressed against the urging member 22. This state is shown in FIG. 9 (B). By making such a state, the movement path of the protrusion 31 of the drop rod 12 is blocked, and the movement of the protrusion 31 upward can be restricted.

For example, if there is a stagnation in the recess 5 of the floor surface 4, or if the shutter is subjected to vibration, wind pressure, water pressure, or the like, the drop bar 12 may be lifted. FIG. 9B also shows a state in which the protrusion 31 of the drop bar 12 is raised to some extent. Even in such a state, if the restraining member 33 is brought into contact with and pressed against the urging member 22 as described above, the protrusion 31 of the drop rod 12 will not move upward and the lower urging portion 25 will drop. By pushing the protrusion 31 of the rod 12 downward, the fitting of the drop rod 12 and the recess 5 of the floor surface 4 is not disengaged. As a result, even if the tip of the drop bar 12 is not completely lowered into the recess 5 of the floor surface 4 or is raised, it is possible to prevent the drop bar 12 from coming off from the recess 5 of the floor surface 4, and the center pillar 3 Can be maintained in a fixed state.

When removing the center pillar 3, the operation opposite to the above-mentioned operation may be performed. For example, by sliding the knob 13 so that the restraining member 33 does not come into contact with the urging member 22, and then pulling up the drop rod 12, the protrusion 31 of the drop rod 12 deforms the urging member 22 and urges the member 22. When the member 22 is passed near the central portion, an upward force is urged by the upper urging portion 26, and the state shown in FIG. 9A is obtained. Even in this state, the drop rod 12 does not descend even if the drop rod 12 is released, but if the knob 13 is further slid to bring the restraining member 33 into contact with and press the urging member 22, the drop rod 12 does not descend. Further, in this state, the tip of the drop rod 12 is detached from the recess 5 of the floor surface 4, and the middle pillar 3 can be removed.

In this third embodiment, as described above, the deterrent member 33 also has the functions of the first regulation unit 23 and the second regulation unit 24. Since the urging member 22 is not provided with the first regulating portion 23 or the second regulating portion 24, the lifting of the drop rod 12 cannot be suppressed only by the elastic force of the leaf spring used as the urging member 22. However, the function of the first regulation unit 23 and the second regulation unit 24 of the deterrent member 33 ensures that the ascent or descent of the drop bar 12 is regulated.

In order to reliably regulate the upward or downward movement of the protrusion 31 of the drop rod 12, it is necessary to perform an operation of contacting and pressing the restraining member 33 with the urging member 22. On the other hand, the urging member 22 has a simpler shape as compared with the first and second embodiments, and has an advantage that the manufacturing cost can be reduced.

FIG. 10 is a configuration diagram showing a fourth embodiment of the fixing device of the present invention. The reference numerals in the drawings are the same as those in the first to third embodiments described above, and the points different from those in the first to third embodiments will be mainly described. 51 is an upper lid portion, 52 is an inner lid portion, 53 is a coil spring, and 54 is a rotation shaft. In this fourth embodiment, an example in which the coil spring 53 is used as the urging member 22 is shown. Functionally, it is similar to the third embodiment described above.

The urging member 22 in the fourth embodiment has a compressed coil spring 53 inside the upper lid portion 51 and the inner lid portion 52. The upper lid portion 51 is rotatably supported by the case 21 on the rotating shaft 54. The rotation shaft 54 may be provided so that its vertical position is near the center of the moving range of the protrusion 31 of the drop rod 12.

Further, the inner lid portion 52 is rotatably locked to the protrusion 31 of the drop rod 12, and is fitted inside the upper lid portion 51 so that the inner lid portion 52 can move linearly in the inner direction and the outer direction of the upper lid portion 51. It is configured to be possible.

The compressed coil spring 53 is housed inside the upper lid portion 51 and the inner lid portion 52 in a compressed state, and the elastic force of the compressed coil spring 53 pushes the upper lid portion 51 toward the rotation shaft 54 on one side and the upper lid portion 51 on the other side. The inner lid portion 52 is pushed toward the protrusion 31 of the drop rod 12 that serves as the rotation axis.

As in the third embodiment described above, also in the fourth embodiment, the deterrent member 33 also has the function of the first regulation unit 23 provided in the first and second embodiments. There is. That is, when the knob 13 is slid so that the restraining member 33 is projected within the range in which the urging member 22 rotates, the rotation of the urging member 22 is suppressed, and the rise of the drop rod 12 is restricted. It will fulfill the function of the first regulatory unit 23.

An example of the operation in the fourth embodiment of the fixing device of the present invention will be described. The description overlapping with the example of the operation in the first to third embodiments described with reference to FIGS. 4, 5, 7, 8 and 9 may be omitted. Before building the center pillar 3, the fixing device 11 is in the state shown in FIG. 10 (A), the drop rod 12 is pulled up, and the protrusion 31 of the drop rod 12 is larger than the rotation shaft 54 of the upper lid portion 51. It is in a state of being located above. In this state, the inner lid portion 52 is pushed by the elastic force of the coil spring 53, the force is transmitted to the protrusion 31, and an upward force acts on the drop rod 12. Due to this upward force, the drop bar 12 is maintained in a pulled-up state. In this state, the insertion display unit 32 is exposed to the outside of the case 21, indicating that the drop bar 12 is not inserted. Further, in this state, the restraining member 33 is kept in a retracted state.

After installing the center pillar 3, when fixing the center pillar 3 to the floor surface 4, align the tip of the drop rod 12 so that it is inserted into the recess 5 of the floor surface 4, and push down the drop rod 12. .. When the drop rod 12 is pushed down by applying a certain amount of force, the protrusion 31 of the drop rod 12 is lowered, and the entire urging member 22 rotates about the rotation shaft 54. At that time, the distance between the rotating shaft 54 and the protrusion 31 is gradually shortened, the inner lid portion 52 enters the inside of the upper lid portion 51, and the coil spring 53 is contracted. That is, when the drop rod 12 descends from the pulled-up state, the coil spring 53 is contracted to a certain extent, and the upward force acting on the drop rod 12 gradually increases due to the elastic force thereof. As a result, the pulled-up drop rod 12 is prevented from being inadvertently lowered. When pushing down the drop rod 12, it is pushed down with a force equal to or greater than the elastic force of the coil spring 53.

Further, the drop rod 12 is pushed down, and when the position of the protrusion 31 of the drop rod 12 passes the position where it is horizontal to the rotation shaft 54, the elastic force of the coil spring 53 acts downward with respect to the drop rod 12. As a result, the drop rod 12 is urged downward and descends, and the drop rod 12 is inserted into the recess 3 of the floor surface 4 and is fitted.

If there is no problem with the recess 5 of the floor surface 4, the protrusion 31 of the drop rod 12 descends to the lower surface inside the case 21, and the tip of the drop rod 12 descends to the lowest position 41, and the center pillar 3 is fixed. It will be. In this state, the insertion display unit 32 exists inside the case 21, and the insertion display unit 32 is hidden behind the case 21 and cannot be seen from the outside. As a result, it is displayed that the drop bar 12 has been inserted.

For example, if there is a stagnation in the recess 5 of the floor surface 4, or if the shutter is subjected to vibration, wind pressure, water pressure, or the like, the drop bar 12 may be lifted. In such a case, the protrusion 31 of the drop rod 12 rises, and the entire urging member 22 rotates about the rotation shaft 54. At that time, the distance between the rotating shaft 54 and the protrusion 31 is gradually shortened, the inner lid portion 52 enters the inside of the upper lid portion 51, and the coil spring 53 is contracted. Therefore, the elastic force of the coil spring 53 increases, and the downward force of the drop rod 12 increases. As a result, even when the drop rod 12 is about to rise, the fit between the drop rod 12 and the recess 5 on the floor surface 4 is prevented from being disengaged.

After pushing down the drop rod 12 and fitting the drop rod 12 and the recess 5 on the floor surface 4, the knob 13 is further slid to project the restraining member 33. This state is shown in FIG. 10 (B). In such a state, when the urging member 22 tries to rotate, the upper lid portion 51 of the urging member 22 comes into contact with the protruding restraining member 33, and the rotation of the urging member 22 is suppressed. Deterrence. For example, when the shutter receives a large vibration, strong wind pressure, water pressure, or the like and the drop rod 12 tries to rise, the rotation of the urging member 22 interlocked with the protrusion 31 of the drop rod 12 is suppressed by the restraint member 33. As a result, the ascending of the drop rod 12 is surely prevented, and the central pillar 3 can be maintained in a fixed state.

When removing the center pillar 3, the operation opposite to the above-mentioned operation may be performed. For example, the knob 13 is slid to retract the restraining member 33, and then the drop rod 12 is pulled up. Up to a position where the position of the protrusion 31 of the drop bar 12 is horizontal to the rotation shaft 54, a downward force acts on the drop bar 12 due to the compression of the coil spring 53, but after this position, the coil spring 53 The elastic force due to the force acts upward with respect to the drop rod 12, and the drop rod 12 as shown in FIG. 10 (A) is in a pulled-up state. In this state, the tip of the drop bar 12 is detached from the recess 5 of the floor surface 4, and the center pillar 3 can be removed.

In this fourth embodiment, an example in which the coil spring 53 is used as the urging member 22 is shown. It is assumed that the lifting rod 12 cannot be suppressed by the elastic force of the coil spring 53 alone, but the restraining member 33 functions as the first regulating portion 23 and is fitted with the recess 5 of the floor surface 4. The rise of the drop bar 12 will be surely regulated.

In the configuration of the fourth embodiment shown in FIG. 10, an example in which one restraining member 33 is provided is shown, but if two are provided, one of them will not be lowered with the drop rod 12 pulled up. It can function as a second regulation unit 24 that regulates in this way.

As described above, some embodiments of the fixing device of the present invention have been shown. Of course, the present invention is not limited to these embodiments, and various modifications can be made without changing the gist of the invention. As an example, the restraining member 33 is not limited to a sliding structure, and it is sufficient that the deformation of the leaf spring can be suppressed in the first to third embodiments such as a structure in which the restraining member 33 protrudes by pressing a button, and the fourth embodiment. Then, as long as the rotation of the urging member 22 can be suppressed, any structure may be used. In addition to this, various modifications are possible, such as using a configuration that is locked by closing the shutter as described in Patent Document 1 and Patent Document 2.

1 ... Shutter curtain, 2 ... Guide rail, 3 ... Middle pillar, 4 ... Floor surface, 5 ... Recess, 11 ... Fixing device, 12 ... Drop bar, 13 ... Knob, 21 ... Case, 22 ... Biasing member, 23 ... 1st regulation part, 24 ... 2nd regulation part, 25 ... lower urging part, 26 ... upper urging part, 27 ... deterrent part, 31 ... protrusion, 32 ... insertion display part, 33 ... deterrent member, 41 ... bottom Position, 42 ... Lower position, 43 ... Upper position, 44 ... Top position, 45 ... Central position, 51 ... Upper lid, 52 ... Inner lid, 53 ... Coil spring, 54 ... Rotating shaft.

Claims (4)

In the fixing device that fixes the center pillar provided between the connected shutters to the floor, it consists of a drop bar that is moved downward when fixing the center pillar and fitted into the recess provided on the floor, and an elastic material. A convex arc-shaped lower urging portion that applies a downward force to the drop rod and a convex shape that applies an upward force to the drop rod while the first regulation portion and the second regulation portion are formed. a biasing means provided with the upper biasing portion formed in a circular arc shape, the biasing means, when moving the drop rod downward from the first restricting portion, the drop by the lower biasing portion When a downward force is applied to the rod and the movement of the drop rod above the first regulation portion is restricted, and when the drop rod is moved above the second regulation portion, the upper urging portion causes the drop rod. fixing device comprising a Turkey to restrict the movement of the below said second regulating portion of the drop rod with applying a force upward to the drop bar. A deterrent portion formed in a concave shape is provided between the first restricting portion and the second restricting portion of the urging means , and further, the urging means comes into contact with the deterrent portion of the urging means. fixing device according to claim 1, characterized in that it comprises a suppression means for suppressing deformation of the unit. A deterrent portion formed in a convex shape is provided between the first restricting portion and the second restricting portion of the urging means, and further, the deterrent portion of the urging means is abutted against the deterrent portion. The fixing device according to claim 1 , further comprising a deterrent means for suppressing deformation of the force means. The drop rod, one of claims 1 to 3, characterized in that the display indicating whether depressed to a position where the dropped rod is inserted into the recess provided on the floor have been made The fixing device according to item 1.

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