JPH0225906Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an operating force transmission device for a lifting door that opens and closes an entrance/exit or a window.

A high degree of airtightness is required in sterile rooms and clean rooms where electronic devices are manufactured, and the doors must be completely airtight. Because vehicles are used to transport items into and out of sterile and clean rooms, the floor is flat without any convex thresholds, and the door is placed underneath to maintain complete airtightness when closed. It is lowered so that the edge touches the floor surface, and when the door is opened, it is raised from the lowered position where it touches the floor surface to a higher raised position in order to reduce the resistance of the door opening operation. The present invention provides a novel operating force transmission device for lifting the door as described above.

Hereinafter, the present invention will be described in detail based on specific embodiments shown in the accompanying drawings.

First, a mechanism for lifting the door from the lowered position to the raised position when opening the door when the door is in the lowered position where the lower edge touches the floor in the closed state will be described.

The door 1 is surrounded by an upper frame 2, a door edge frame 3, a lower frame 4, and a door end frame 5 made of extruded aluminum alloy members. The upper frame 2, the door end frame 3, the lower frame 4, and the door end frame 5 have the same cross-section, and a guide groove 6 is formed inside them. A plate-shaped sliding member 7 is slidably disposed at 6. A right-angled bent cylinder 8 is fixed to the tip and bottom of the door 1, and a flexible member 9 such as a stainless steel belt is inserted therein, and both ends of the flexible member 9 are connected to the sliding member 7, respectively. Link. That is, the sliding member 7 is slidably arranged in the guide grooves 6 of the door end frame 3, the lower frame 4, and the door end frame 5, and is connected to the flexible member 9 at the corner portions of the door end and the lower part of the door end. The sliding member 7 and the flexible member 9
The transmission device 10 has flexible members 9 interposed at the corner portions. On the other hand, a handle 11 is rotatably supported at the center of the door tip of the door 1, and the handle 11 is inserted into a square hole 13 of a crank 12 housed in the door 1.
1, and the eccentric part of the crank 12 is connected to the sliding member 7, which is the driving end of the transmission 10.
Connect to the top of the . Further, the sliding member 7 on the other end side of the transmission device 10 is fixed to an outer frame side hinge 17 that is attached and fixed to the outer frame 16. The door 1 has a door hinge 15 placed on the outer frame hinge 17 and is rotatably provided.

In this door 1, FIG. 1 shows a closed state in which the door 1 is in a lowered position in contact with the floor surface 18, and in order to lift the door 1 to open the door 1, move the vertical handle 11 along the two-dot chain line. When rotated to the state shown in
Power is transmitted to the transmission 10 via the crank 12, and the upper end of the sliding member 7 is connected to the eccentric portion of the crank 12, so the sliding member 7 on the drive end side of the transmission 10 does not slide. and is displaced upward. As a result, the flexible members 9 in the bending cylinders 8 at the door tip and the lower door bottom are fixed to the outer frame side hinge 17 on the other end side of the transmission device 10, so that both of the flexible members 9 are attached to the handle 1.
1 side, the door 1 is lifted upward, and the lower edge of the door 1 is raised above the floor surface 18. Moreover, when the handle 11 is rotated back to the vertical position shown by the solid line,
The sliding member 7 on the driving end side of the transmission device 10 is slid downward, and the door 1 is also lowered accordingly, and the flexible member 9 is also returned to its original state, so that the lower edge of the door contacts the floor surface 18.

Next, a mechanism for drawing and sealing the door 1 by its own weight when the door 1 descends to come into contact with the floor surface 18 will be described.

A pulling plate 19 having a substantially U-shaped cross section and supporting pieces arranged in a row with the opening facing downward on the upper edge of the door end side of the door 1.
A guided member 20 is provided. A hanging piece 21 of the drawing plate 19 having a U-shaped cross section is bent in an inclined manner toward the door 1 as it goes downward, and its lower end is formed into an arcuate surface. A guided member 2 such as a pulling rod 22 having an arcuate lower end is provided on the lower edge of the door edge.
3 will be provided. This pull rod 22 is attached to the lower edge of the door 1 in a hanging manner. Pull plate 19, pull bar 22
Guide members 28 and 29, such as a guide shaft 27 having a tube body 26 externally fitted onto a support shaft 25, are provided at positions of the upper outer frame 24 and the floor surface 18 facing each other. The guide shaft 27 is installed horizontally at a position where, when the door 1 is lowered, the drawing plate 19 and the drawing rod 22 are brought into abutment and guided to draw the door 1 toward the indoor side. Note that the guided members 20, 2
3 and the guide members 28, 29 are not limited to the illustrated embodiment and may be modified as appropriate.
In addition, in order to maintain airtightness, gaskets 30 and 31 are attached to the outer frame 16 and the upper outer frame 24, respectively.
The door 1 is provided with gaskets 32 and 33 at the lower edge and at the joint portion of the door edge, respectively.

When the door 1 is closed, the lower edge of the door 1 rotates to a raised position higher than the floor 18, reaches the closed position, and rotates the handle 11 to the vertical position shown by the solid line in FIG. 1, as described above. The door lowers like this.
At this time, the door 1 has a pulling plate 19 on its upper edge and a pulling bar 22 on its lower edge abut against the guide shaft 27, the tube body 26 rotates and is guided along the outer circumferential arc surface of the support shaft 25, and the door 1 is 1 is drawn toward the indoor side, and the gaskets 30 and 31 of the outer frame 16 and upper outer frame 24 are attached to the door end frame 5 and upper frame 2 of the door 1.
Then, the gasket 32 at the lower edge of the door 1 is pressed by the floor surface 18, and the gasket 33 at the joining part of the door end frame 3 is pressed by the joining part of the door end frame 3 of another door 1.

Next, the transmission device 10 for the operating force for lifting the door 1 will be described.

A sliding member 7 of the transmission device 10 is arranged in the guide groove 6 of the door frame 3 of the door 1, and the sliding member 7 is arranged to rotate the crank 12 from above (on the left side in FIGS. 5 and 6). It is connected to the handle 11 through the handle 11, and the lower part is connected to a flexible member 9 that passes through the bent cylinder 8.

The sliding member 7 is connected by an upper sliding member 34, a lower sliding member 35, and an intermediate sliding member 36. The lower end of the upper sliding member 34 and the upper end of the intermediate sliding member 36 are screwed together with screws 37. A vertical elongated hole 38 is cut into the lower end of the intermediate sliding member 36, and a shaft portion of a support pin 39 whose head is formed with a larger diameter than the small diameter portion of the elongated hole 38 is inserted into the lower end of the lower sliding member. 35 Attach to the upper end. Note that it is possible to carve a long hole in the upper end of the lower sliding member 35 and attach a support pin to the intermediate sliding member 36 as needed. Further, a lock hole 40 is bored in the center of the intermediate sliding member 36, and the lock 41 is arranged in the lock hole 40 so that the bolt 42 of the lock 41 can freely move forward and backward. Reference numeral 12 is a crank.

To lift door 1 to open door 1,
When the vertical handle 11 is rotated to the state shown by the two-dot chain line, the transmission device 10 is rotated through the crank 12.
When power is transmitted to the driving end side of the transmission device 10, the sliding member 7 on the driving end side slides and is displaced upward. On this occasion,
The operating force of the handle 11 is transmitted to the flexible member 9 by the sliding member 7, and the intermediate sliding member 36 of the sliding member 7 is connected to the lower sliding member 35 through the elongated hole 38 and the support pin 3.
9, the lower end of the elongated hole 38 is connected to the support pin 39.
The operating force is transmitted by engaging with. Also, when the lock is locked, the dead bolt 42 of the lock 41 is moved to the intermediate sliding member 36.
is located within the lock hole 40 of. Then, the sliding member 7 is fixed and the door 1 does not open. Note that locking is usually referred to as final locking, and by rotating the key or therm turn, the lock 41 is turned into the bolt 4.
2 stands out.

As mentioned above, the present invention is based on the door frame around the door,
A sliding member is slidably arranged in the guide groove of the lower frame and the door end frame, and the flexible member inserted into the bent cylinder provided at the door end and the lower part of the door end is connected to the sliding member to form a transmission device. A crank is connected to a handle pivotally supported on the door, a driving end of a transmission device is connected to an eccentric part of the crank, and the other end is fixed to a hinge on the outer frame side that is attached and fixed to the outer frame. A lifting door in which a side hinge is placed on an outer frame side hinge and is rotatably provided to lift the door from a lowered position where its lower edge touches the floor surface to an elevated position higher than the lowered position when the door is opened or closed, The sliding members of the transmission device are connected to each other, a long hole is cut in one of the sliding members of the connecting part, and a support pin is inserted into the long hole to attach the other sliding member. This is an operation power transmission device for a lifting door in which a lock hole is drilled in the member and the lock is arranged so that the lock's dead bolt can move forward and backward in the lock hole.It is constructed by connecting the sliding members of the transmission device and Since a long hole is carved in one sliding member of the connecting part and the support pin is inserted into the long hole to attach the other sliding member, there is some play in the transmission, making it difficult to operate the handle. It can buffer and transmit force, contributing to longer life of the transmission device, and also allows the height of the door to be lifted from the floor to be adjusted by adjusting the length of the long hole and the position of the support pin. Furthermore, in the present invention, a lock hole is drilled in the sliding member and the lock is arranged so that the lock can be inserted into the lock hole. The guided member is engaged with the guide member and the door will not open. Locking is completed at this position. In particular, with conventional double-opening doors, one door has a lock and the other door has a socket for the lock's bolt, making it difficult to align them.
According to the present invention, since one door is provided with a sliding member (lock hole) of a transmission device corresponding to a lock and its receiving metal fitting, adjustment of both is extremely easy.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front view schematically showing the entire structure, Fig. 2 is a partially longitudinally sectional front view showing a transmission device for raising and lowering the door, and Fig. 3 is a horizontal sectional view thereof. 4 is a vertical sectional view, FIG. 5 is a vertical sectional front view of the transmission device of the main part of the present invention, and FIG. 6 is a side view of FIG. 5. 1...Door, 3...Door frame, 4...Bottom frame, 5...
Door end frame, 6... Guide groove, 7... Sliding member, 8...
Bent cylinder body, 9... Flexible member, 10... Transmission device,
11...Handle, 12...Crank, 17...
Outer frame side hinge, 15... Door side hinge, 18... Floor surface, 38... Long hole, 39... Support pin, 40...
Lock hole, 41... Lock, 42... Det bolt.

Claims (1)

[Scope of utility model registration request] A sliding member is slidably arranged in the guide grooves of the door tip frame, bottom frame, and door bottom frame around the door, and slides with a flexible member inserted into a bent cylinder provided at the bottom of the door tip and door bottom. A transmission device is constructed by connecting the members, a crank is connected to a handle pivotally supported on the door, a driving end of the transmission device is connected to an eccentric part of the crank, and the other end is attached and fixed to the outer frame on the outer frame side. The hinge is fixed to the hinge, and the door side hinge of the door is placed on the outer frame side hinge and is rotatable so that when the door is opened and closed, the door is moved from a lowered position where the lower edge touches the floor to a higher position. In the lifting door that is lifted to the raised position, the sliding members of the transmission device are connected to each other, a long hole is cut in one sliding member of the connecting part, and a support pin is inserted into the long hole to open the other sliding member. An operating force transmission device for a lifting door, characterized in that a moving member is attached, a lock hole is bored in the sliding member, and a lock is arranged in the lock hole so that a dead bolt of the lock can freely move forward and backward.