KR200361259Y1 - Apparatus for opening and closing door of ceiling - Google Patents

Abstract

The present invention relates to a door opening and closing device for a ceiling, in particular, easy and easy to install, but also has a simple structure and effectively damps the door to open and close slowly, it is convenient in use and excellent in the prevention of safety accidents. It relates to a ceiling door opening and closing device.

The present invention, the outer frame is mounted to the ceiling opening; A door configured to pivot in and out of the opening in a state where one end is hinged to the outer frame; A locking member for selectively locking and unlocking the door to the outer frame; A show bar comprising a body portion fixed to the outer frame and a rod portion elastically stretchable with respect to the body portion; One end is fixed to the end of the rod portion and the other end is fixed to the free end region of the door characterized in that it comprises a damping wire for damping the opening and closing of the door based on the stretch state of the rod.

Description

Apparatus for opening and closing door of ceiling}

The present invention relates to a ceiling door opening and closing device, in particular, it is easy to install and has a simple structure, while effectively damping the ceiling door to open and close slowly, it is convenient for use and excellent in the prevention of safety accidents. It relates to a door opening and closing device.

The ceiling usually has an integrated surface or wall structure, not an open type, but if you want to use a space on the ceiling as a power distribution room or as a space to install a separate device or machine, the ceiling is formed as a door. The door can be opened and closed if necessary.

1 and 2 are a perspective view showing the overall configuration of a conventional door opening and closing device for the ceiling and side cross-sectional view illustrating the same. Referring to these drawings, a space for mounting a separate device or a machine is formed on the upper part of the pair of doors 112 serving as a ceiling, and the pair of doors 112 are provided on separate opening and closing devices. It has a structure that can be opened and closed by.

The pair of doors 112 opens and closes the openings of the ceilings while each of the pair of doors 112 rotates downward with respect to abutting centers. At this time, the opening and closing device is a locking member 120 is mounted in the central area where the pair of doors 112 abut, the damper coil 130 is installed on both sides of the pair of doors 112 and the door 112 It is composed of a jointed link 134 connecting to).

According to the conventional ceiling door opening and closing device, when the locking member 120 is unlocked first, the pair of doors 112 facing each other rotate downward from the center. At this time, a pair of doors 112 are rotated downward while the articulated link 134 is unfolded, and the damper coil 130 is compressed to slowly hold the door 112 elastically.

On the contrary, when the door 112 is rotated upward, the damper coil 130 and the link 134, which were compressed, are returned to their original state, and the pair of doors 112 are slowly rotated upward to close the opening of the ceiling. The space is tightly closed.

By the way, the door 112 is installed on the ceiling surface to maintain a predetermined durability to safely protect the received equipment, as well as to ensure the soundproofing and fireproof strength is that a high-strength material is mainly used In general, the metal plate is manufactured using a weight of about several tens of kilograms (kg). Therefore, when the door 112 is opened, the risk of a safety accident is very high if the relatively heavy door 112 is suddenly opened without being slowly opened downward.

In consideration of such a risk, as shown in FIGS. 1 and 2, the damper coil 130 is provided as a means for slowly opening the door 112, but the door 112 is heavy due to the structure and characteristics of the damper coil 130. ) Is not suitable for safely supporting, it is pointed out that if you want to damp the door 112 having a weight of several tens of kilograms (kg) or more, the corresponding high-elastic damper coil 130 must be installed.

Since the coil of high elasticity increases the thickness and the number of turns of the coil to increase the overall volume, the use of such a highly elastic damper coil 130 will eventually cause the weight of the door 112 to increase again. However, the installation space of the structure to accommodate this was causing another problem.

As a result, the structure illustrated in FIGS. 1 and 2 only takes a theoretical configuration for damping a pair of doors 112, and is inadequate to prevent safety accidents because it is too difficult to apply to the actual site. It is evaluated.

The present invention has been devised to solve such a problem, and is easy to install and has a simple structure, and effectively damps the door for the ceiling to be opened and closed slowly, so it is convenient in use and excellent in preventing accidents. The main purpose is to provide a ceiling door opening and closing device.

1 is a perspective view showing the overall configuration of a conventional ceiling door opening and closing device,

Figure 2 is a side cross-sectional view of the conventional ceiling door opening and closing device,

Figure 3 is a plan view of the ceiling door opening and closing device according to the present invention,

4 is a perspective view of the door opening and closing device for a ceiling of the present invention,

Figure 5 is a side cross-sectional view of the ceiling door opening and closing device according to the present invention,

* Explanation of symbols for the main parts of the drawings

10: outer frame, 12: door, 12a: free end, 14: hinge, 20: locking member, 30: shobar, 31: body, 32: rod, 34: damping wire, 36: fixed roll member, 37: Single-position roll member, 38, 39: 1st and 2nd wire fixing ring

The present invention for achieving the above object is an outer frame mounted to the ceiling opening; A door configured to pivot in and out of the opening in a state where one end is hinged to the outer frame; A locking member for selectively locking and unlocking the door to the outer frame; A show bar comprising a body portion fixed to the outer frame and a rod portion elastically stretchable with respect to the body portion; And a damping wire having one end fixed to an end of the rod part and the other end fixed to a free end region of the door to damp opening and closing of the door based on the stretch state of the rod part.

Hereinafter, preferred embodiments of the present invention will be described in detail. In the following drawings, each pair except for the outer frame exists in pairs, and the same reference numerals are used for the convenience of description.

Figure 3 is a plan view of the ceiling door opening and closing device according to the present invention, Figure 4 is a perspective view of the ceiling door opening and closing device of the present invention, Figure 5 is a side cross-sectional view of the ceiling door opening and closing device according to the present invention Each is shown.

As shown in these drawings, the door opening and closing device for a ceiling according to the present invention, to put the equipment receiving space (not shown) provided on the ceiling to use this as a distribution room, or to use as a space to install a separate device or machine Used when

Therefore, the door 12 is used as a constituent part of the ceiling, and is used as the door 12 rather than a fixed surface or a ceiling as a wall, so that the door 12 can be opened as necessary. As described above, since the door 12 as a constituent of the ceiling is formed of a metal material of several tens of kilograms (kg) or more, an unexpected safety accident may be caused by a sudden deployment in the process of opening the door 12. Safety accidents can be effectively prevented by the following ceiling door opening and closing device.

As shown, the opening of the ceiling is mounted with an outer frame 10 forming an outer frame along the area of the ceiling, and the outer frame 10 is equipped with a pair of doors 12. One end of the pair of doors 12 is hinged 14 to the outer frame 10, and the opening of the ceiling is opened while rotating downward from the center of the abutting center.

Usually, in order for the pair of doors 12 to close the opening of the ceiling, the pair of doors 12 must be locked to the outer frame 10. To this end, a locking member 20 is provided between the pair of doors 12 and the outer frame 10 to lock and unlock the door 12 with respect to the outer frame 10, respectively.

The locking member 20 has a locking box 21 having a key groove 22 into which a locking key (not shown) is inserted, one end of which is wound on the locking box 21, and the other end of which is disposed on the outer frame 10. Locking wire 23 is formed on the end of the locking wire 23 and the outer surface of the outer frame 10 is installed in the longitudinal direction, the hook 24 of the locking wire 23 is selectively caught and released the locking bar It consists of 25.

Due to the characteristics of the ceiling structure, it is not preferable to protrude and install a handle for opening the door 12 installed on the ceiling, so that one surface of the locking box 21 in which the key groove 22 is formed is formed on the plate surface of the door 12. Keep it flat.

Therefore, when the locking key is inserted into the key groove 22 and rotated in one direction, the locking bar 23 is pulled toward the locking box 21 due to the rotating body installed in the locking box 21. Then, the hook 24 is released from the locking bar 25, and at this time, the free end 12a of the door 12 is slightly sagging downward due to the load. Therefore, it is possible to simply open the door downward by pulling the door 12 into the space.

Thus, in the process of opening the door 12 downward, the door 12 of more than a few tens of kilograms (kg) needs to be opened slowly, which is the show bar 30, the damping wire 34 and the single-position roll member to be described later. It becomes possible by (37).

As shown in Figures 3 to 5, the show bar 30 is coupled to the body portion 31 and the body portion 31, the compressed gas is filled therein, is inserted into or taken out of the body portion 31 It consists of a rod part 32 elastically stretched. On the other hand, the body portion 31 is fixedly installed in the opening and closing direction of the door 12 with its end fixed on the outer frame 10 adjacent to the hinge 14. The first wire fixing ring 38 to which the damping wire 34 may be fixed is formed at the end of the rod part 32.

In the outer frame 10 adjacent to the first wire fixing ring 38, the first operating position of the damping wire 34 fixed to the first wire fixing ring 38 is shifted a predetermined distance t toward the door 12 side. A single batch roll member 37 to be arranged is provided. The single batch roll member 37 is made of a fixed type rather than rolling rollers to allow the damping wire 34 to be sliding frictionally moved.

The single-position roll member 37 is installed to be spaced forward from the hinge 14 axis of the door 12 so that the maximum opening angle of the door 12 can be maintained even with a minimum pulling distance of the damping wire 34. Will be.

Therefore, the installation position of the single batch roll member 37 which is installed to be spaced apart from the hinge 14 shaft, depends on the transport distance and the opening angle of the door 12 of the rod portion 32 withdrawn from the show bar 30. In addition to being installed on the outer frame 10, the one-way roll member 37a may be installed on the door 12 as illustrated in FIG. 5.

The damping wire 34, the tip of which is fixed to the first wire fixing ring 38, is installed to be guided to the single batch roll member 37 through the fixed roll member 36. The damping wire 34 may be installed to directly guide the fixed roll member 36 at the tip of the rod part 32 without going through the fixed roll member 36, in this case, the shobar 30. Since the rod part 32 of the rod part 32 is stretched and contracted in a constant inclined direction with respect to the body part 31, there may be a problem that burnout occurs in the showbar 30.

The fixed roll member 36, like the one-piece roll member 37, is sufficient to pass through the damping wire 34, and the simple ring shape allows the damping wire 34 to move only by sliding friction movement without rolling. Has

However, such a problem is that the damping wire 34 by coupling the wire connecting piece 38a to the tip of the rod part 32 of the showbar 30 to replace the first wire fixing ring 38 as illustrated in FIG. 5. ) Can be solved by keeping parallel to the rod part 32 of the showbar 30.

As described above, the other end of the damping wire 34 via the single-position roll member 37 is fixed to the second wire fixing ring 39 installed toward the free end 12a of the door 12 again. Supported. The second wire fixing ring 39 is sufficient to exist on the inner surface of the door 12 and does not necessarily need to be installed close to the free end 12a of the door 12.

This is because the damping wire 34 fixedly supported by the second wire fixing ring 39 via the flattening roll members 37 and 37a and the second wire locking ring 37 and 37a. This is because there is no change in length between 39).

In other words, the damping wire 34 is a means for slowly opening and closing the door 12 based on the force of the shobar 30, one end of which is fixed to the first wire at the end of the rod part 32 of the shobar 30. After being fixed to the ring 38, the second wire fixing ring 39 mounted in the free end 12a region of the door 12 after passing through the fixed roll member 36 and the single-position roll member 37 in turn. ) Is fixed and supported. The arrangement structure of the damping wire 34 serves to cause the heavy door 12 to be easily opened and closed through the use of the relatively small capacity of the showbar 30.

Looking at the operation of the present invention ceiling door opening and closing device configured as described above are as follows.

If the door 12 is to close the opening of the ceiling, if you want to open the door 12, first, the locking key is inserted into the key groove 22 to rotate in one direction. Then, while the rotating body in the locking box 21 rotates to move the locking bar 23 to the locking box 21 side. When the locking bar 23 moves toward the locking box 21, the hook 24 is released from the locking bar 25. In this state, the free end 12a of the door 12 is slightly lowered due to its own weight. Sagging can be seen.

When a space enough to put a hand into the free end 12a area of the door 12 is generated, the user grasps the free end 12a area of the door 12 and pulls it downward.

Then, the area of the free end 12a of the door 12 is downwardly spaced apart from the outer frame 10 with the hinge 14 as an axis, and the damping wire 34 is pulled by a distance that is separated by the distance of the showbar 30. The rod portion 32 is elastically inserted into the body portion 31 side.

The rod part 32 is elastically inserted slowly due to the compressed gas present in the body part 31, and the door 12 may be slowly opened downward by this force. Of course, the opposite door in Figures 3 to 5 also maintain the same shape and operation.

At this time, the opened door 12 is to be kept open by the weight of the door 12 unless a closing force is applied by a user's arbitrary operation, and thus the show bar 30 restricting the door 12. It is advantageous to install so that the capacity of) remains the same or somewhat smaller than the design weight of the door 12.

On the other hand, when the free end 12a of the door 12 is pressed upward to close the door 12, the pressing force and the capacity of the shobar 30 are relatively large compared to the weight of the door 12, so that the body The rod part 32 which has been inserted into the part 31 again starts to be taken out (out) elastically. Since the damping wire 34 is attracted, the damping wire 34 moves to its original position without being twisted. As soon as the door 12 is fully pressed to catch the hook 24 by the hook 25, the door 12 is closed to close the open space of the ceiling and the operation of the rod 32 is stopped.

As described above, according to the ceiling door opening and closing device of the present invention, not only the construction is easy but also has a simple structure and effectively damps the door 12 for the door to be opened and closed slowly, so that it is convenient in use and prevents safety accidents. The effect is excellent.

Claims (7)

An outer frame mounted to the ceiling opening; A door configured to pivot in and out of the opening in a state where one end is hinged to the outer frame; A locking member for selectively locking and unlocking the door to the outer frame; A show bar comprising a body portion fixed to the outer frame and a rod portion elastically stretchable with respect to the body portion; One end is fixed to the end of the rod portion and the other end is fixed to the free end region of the door including a damping wire for damping the opening and closing of the door based on the stretch state of the rod portion. The method of claim 1, The first wire fixing ring is formed at the end of the rod portion so that the damping wire can be fixed, and the first operating position of the damping wire fixed to the first wire fixing ring is fixed to the door side in the outer frame adjacent to the first wire fixing ring. The door opening and closing device for a ceiling, characterized in that it comprises a one-way roll member for single distance arrangement. The method of claim 2, The one-piece batch roll member spaced apart from the hinge shaft is installed on the outer frame to be adjusted according to the transport distance and the door opening angle of the rod portion drawn from the show bar. The method of claim 2, The one-piece batch roll member spaced apart from the hinge shaft is installed on the door to be adjusted according to the transfer distance and the door opening angle of the rod portion drawn out from the show bar. The method of claim 2, The damping wire is fixed to the first wire fixing ring, the ceiling door opening and closing device, characterized in that it is installed to be guided to the one-way roll member via a fixed roll member. The method of claim 1, The wire door opening and closing device coupled to the front end of the rod portion of the showbar, connecting the end of the damping wire to the damping wire is configured to be maintained in parallel with the rod portion of the showbar. The method of claim 2, The other end of the damping wire via the one-way roll member, the ceiling door opening and closing device, characterized in that is installed to be fixed to the second wire fixing ring which is installed toward the free end of the door again.