JP2003321961A - Internal unlocking device of door structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an internal unlocking device of a door structure, which enables emergency escape even from the inside of a door with a flat handle, a lever handle and the like. <P>SOLUTION: In a handle for unlocking from the outside of the door, such as the flat handle and the lever handle, a latch makes the door locked to a main body such as a skeleton and a case; and an operating plate for pulling and/or pushing the latch with respect to the door is provided inside the door with the handle, so that a person can easily escape from the inside of the door to the outside thereof. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure in which a handle lever is turned from the outside of a door such as a flat handle or a lever handle to open or close the door from a main body such as a skeleton, a housing or a pillar, and even from the inside of the door. The present invention relates to an internal unlocking device having a door structure that allows emergency escape.

[0002]

2. Description of the Related Art A conventional lever handle is shown in FIGS.
8, which is the handle 5 on the outside of the door 51.
By turning 2, the latch 88 provided on the inside of the door 9
It is designed to be hooked at 9. That is, the handle 52 is inserted into the three holes of the door 51 and then fixed to the door 51 by screwing the fixing nut 53 onto the male screw 54 at the front end thereof, and then the square protrusion 55 at the tip of the handle 52 is fitted into the square hole. After inserting the latch 88 with 56, the latch mounting bolt 5
I was tight at 8. As a result, the lever handle is
In the state shown in FIG. 8, the door 51 is fixed to the main body 59, and in order to open the door 51, the handle 52 is rotated in the direction of the arrow (in the opposite direction when tightening), and then the door 51 is pulled outward (the inner side in the drawing). It was open by that.

Further, as a handle of the handle device for opening the door from the outside, there is a flat handle shown in FIGS. 29 to 33 in addition to the lever handle.

29 and 30 are a front view and a vertical sectional view showing the conventional handle device. The handle device 60 is attached to a door 51 of a housing 59 as a main body via a hole or a screw. The handle case 61 that constitutes the handle device 60 is formed by a metal mold or the like into a container shape having an elongated rectangular recess 61a and a circular recess 61b continuous with one end of the recess 61a, and the periphery of the opening of each recess 61a, 61b. A flange portion 62 is formed on the. A high bottom portion 63 and a lower bottom portion 64 which is one step lower than the high bottom portion 63 are continuously provided in the concave portion 61a. The high bottom portion 63 and the low bottom portion 64 have a handle body 7 to be described later.
1 and a lock unit portion 7 which is a part of the handle body
3 is stored so that it can escape.

Further, support pins 65, 66 for supporting the handle body so as to form a uniform surface with the flange portion 62 are integrally provided at the center of the high bottom portion 63.
On the other hand, the claw receiving portion 6 protruding upward to the lower portion of the low bottom portion 64
7 is provided in a protruding manner, and in the vicinity of the claw receiving portion 67, a supporting protrusion 68 for restricting an operation amount of a push button, which will be described later, is integrally provided in a protruding manner.

On the other hand, in the circular recess 61b, a notch disk 69 that freely rotates in the recess 61b is accommodated, and in the rectangular notch 70 formed in the notch disk 69, the handle main body 71 is provided. The upper end of is supported so as to be vertically rotatable around the support shaft 72. The handle body 7
1 has an oblong shape as a whole when viewed from the front, which is supported by the support pins 65 and 66 as described above, and the lock unit portion 73 at the lower portion of the handle body 71 is housed in the low bottom portion 64. This lock unit section 7
3 has a form that largely protrudes toward the low bottom portion 64 side, and a lock 74 is housed in a part thereof.

Further, a push button 75, which is a substantially L-shaped handle escaping means, is rotatably supported around the horizontal support shaft 76 at the lower portion of the handle body 71. With a spring 77 interposed between the lock 74 and
Always biased counterclockwise. The push button 75 has a locking claw 78 projecting downward at the end on the side of the low bottom portion 64, and when the handle body 71 is housed in the elongated rectangular recess 61a, the push button 75 is attached to the head of the claw receiving portion 67. After being guided along, using the repulsive force of the spring 77,
It functions so as to automatically engage with the claw receiving portion 67. Therefore, when the operation portion 75a side of the push button 75 is pressed with a finger,
The push button 75 is centered on the horizontal support shaft 76 and is shown in FIG.
During 0, it is rotated in the clockwise direction, and the pawl receiving portion 67 engages the pawl 7
8 is unlocked. A torsion spring 79 is mounted on the support shaft 72 for urging the handle main body 71 so as to always project to the outside of the notch 70 and the recess 61a.

The notched disk 69 integrally has a shaft portion 80 at the center portion on the back side thereof, and the shaft portion 80 penetrates a supporting hole 81 provided at the bottom of the recess 61b and projects rearward,
The retaining ring 82 fitted to this protruding portion prevents it from coming off. A spring washer 83 and a seal ring 84 are interposed between the bottom of the recess 61b and the notched disc 69. Further, the shaft portion 80 has a screw hole 85.
Is provided, and the screw portion 86 screwed into the screw hole 85 is provided with the shaft portion 8 sequentially arranged on the outer periphery of the shaft portion 80.
A rotation restricting plate 87 for 0, a latch 88, a washer 89, and a spring washer 90 are fixed. The rotation restricting plate 87 has a stopper projection 91 integrally formed at the rear end (rear surface) of the bottom of the recess 61b, so that the rotation amount of the notch disk 69 is 9 degrees.
It is regulated within 0 ° so that the lower arc-shaped rotation of the handle body 71 shown in FIG. 31 is regulated so as not to rotate by 90 ° or more.

The handle device having such a structure is shown in FIG.
9 and the state shown in FIG. 30, the latch 88
Is in a substantially horizontal position and is hooked in a not-shown stop frame on the side of the housing 59, so that the closed state of the door 51 with respect to the housing 59 is maintained. On the other hand, when the door is opened from the closed state, the lock 74 is unlocked and the lower end of the push button 75 is lightly pressed with a finger. As a result, the push button 75 rotates clockwise around the horizontal support shaft 76 against the spring 77 in FIG. 30, and the locking claw 78 is disengaged from the claw receiving portion 67. Therefore, the handle body 71 integrated with the push button 75 receives the repulsive force of the torsion spring 79, and pivots about the support shaft 72 so as to bounce up.
The state shown by the chain line is.

Next, the handle main body 71 is grasped by hand, and is rotated counterclockwise (in the arrow direction) about the notched disk 69 as shown by the solid line in FIG. By this operation, the shaft portion 80 rotates in the same direction together with the notch disk 69, and the latch 88 attached to the shaft portion 80 by the screw 86 rotates counterclockwise. Therefore, this latch 8
8 is disengaged from the stop frame on the side of the housing 59, and then the handle body 71 is pulled toward you, whereby the door 51 of the housing 59 is opened. Also, the closing door is such a door 51
29 and FIG. 3 by performing the opening operation of FIG.
It can be easily performed in the state shown in 0. 32 and 33.
Shows an exploded view similar to that of the conventional example and a state of mounting operation on the door.

On the other hand, as prior art, there are FIGS. 34 to 37 in addition to the above-mentioned FIGS. 27 to 33. The difference between FIGS. 34 to 37 and FIGS. 30 to 33 is that when the latter rotates the latch 88, the lock 74 is unlocked and then the push button 75, which can be pushed in, is pushed in the clockwise direction. The handle main body 71 is flipped up at 79, and then the handle main body 71 is rotated about 90 ° and the latch 88 is rotated to remove it from the housing 59. In the former case, when the push button 75 that can be pressed by unlocking the lock 74 is pushed against the spring 77 ′, the locking portion 95 of the handle body 71 that was engaged with the push button 75 is released, and the handle 79 is released by the spring 79. Jump up. At the same time as the upward movement, the hook 105, which is the protruding portion protruding from the cloud-shaped hole 95, rotates right about the shaft 102 to push down the hook 105 protruding from the cloud-shaped notch 95, and 88 rotates clockwise around the operation pin 107 and descends downward until the action pin 109 hits the upper side of the hole 95. In this way, by simply flipping up the handle with the spring 79, the latch 88 is lowered and then the door 51
The main body 59 can be opened. Screw holes for attaching to the door 51 and screws 93 and 94 are provided in the upper and lower portions of the handle case 61.

[0012]

By the way, as shown in FIGS. 28 and 33, the back side (inside of the door) of the above-described conventional lever handle or flat handle is arranged from the outside of the door 51 to the handles 52, 71. The latch 88 is detached from the main body 59 by rotating, and is not configured to be easily detached from the inside. For example, when an outside worker accidentally closes and locks the door on a distribution board where a person enters inside and works, or in a condominium PS, storage box, etc., which is closed and has no other doorway. When the door 51 is fastened with the latch 88 in the case of escaping from the inside to the outside, it may be difficult to escape to the outside due to the fastening force. Further, in the case of FIG. 35, unless the screw of the operation pin 107 is removed with a tool (not shown) or the like, it cannot be escaped from the inside of the door to the outside.

The present invention focuses on the above-mentioned conventional drawbacks and solves the problems. The purpose thereof is to provide a strong frictional force between the door and the main body of the latch, or even when there is no tool or the like.
An object is to provide an internal unlocking device having a door structure that can be easily escaped from the inside.

[0014]

SUMMARY OF THE INVENTION The present invention has been made in view of the above object, and its gist is to operate a handle on the outside of a door to hang a latch on a main body on the fixed side such as a housing, a skeleton or a support. In a door structure that can be removed or removed, the operation plate pivotally attached to the base body connected to the handle inside the door with an operation pin and the operation pin provided inside the door via the operation plate and a spring can be rotated. In the normal state, by operating the handle, the operating plate is in contact with the latch by the pulling force of the spring, and the base body, the operating plate and the base are rotated to rotate the operating plate. In addition to hanging the hook on the main body or removing it, in an emergency, by pushing a position apart from the operation pin of the operation plate, it is released from the contact state of the operation plate with the latch, so that the spring Premium Inside unlocking device door structure, characterized in that removed from the body and to open the door inward.

Another aspect of the present invention is that, in the emergency state, by pulling a portion of the operation plate which is separated from the operation pin,
The internal unlocking device for a door structure according to claim 1, wherein the latch is removed from the main body by removing the tip of the operation plate from the latch, and the door is opened from the inside. It is in.

According to the above two modes, even if the latch cannot be removed from the interior due to rust or strong pressure between the door and the main body, the operation plate and the latch can be easily operated at the same time or in parallel with the door. The door can be easily and reliably opened from the inside by pushing or pulling from the inside.

Another subject matter of the present invention is the internal unlocking device of a door structure according to claim 1 or 2, characterized in that a grip portion is provided at a position apart from the operation pin. To facilitate the escape operation from the door.

Still another gist of the present invention is that the operating plate and the latch are pivotally attached to the base, and the base of the latch is sandwiched between the tip of the operating plate and the attachment plate of the base to attach the latch to the main body. Stabilize.

Another aspect of the present invention is a door structure in which a handle on the outside of a door is operated to hang or remove a latch on a main body on a fixed side such as a housing, a skeleton or a pillar, and inside the door of the handle. An operating plate is provided on the other side of the base body, in which one side is pivotally attached to the base body connected to the handle by an operation pin and is urged by a spring in a direction to open the side opposite to the pivotal attachment point. The latch is rotatably bent by an action pin, and in the normal state, the handle is operated to bring the tip of the operation plate into contact with a protrusion provided on the latch against the spring and thereby the latch. While the substrate is laid straight and hung on the main body, in an emergency, by pulling a position apart from the operation pin of the operation plate, the tip of the operation plate is removed from the protrusion with the action pin as an axis. With the spring By removing the serial latch from said body, inside unlocking device door structure characterized in that to open the door inward.

According to this aspect, the latch is formed in a straight line on the base body, and the tip of the operating plate is arranged against the spring against the stop plate provided on the latch, so that the entire device is relatively thin. This makes it possible to effectively use the space inside the door.

The other gist of the present invention resides in the internal unlocking device of the door structure according to claim 5, characterized in that a grip portion is provided on the operation plate opposite to the operation pin. To facilitate the escape operation from the door.

Still another subject matter of the present invention is a door structure in which a latch is hung on or removed from a main body on a fixed side such as a casing or a frame by operating a handle on the outside of the door. A fixed fixed substrate and an operation plate having a latch at a front end that is slidable in the main body direction along the substrate, and guide means that slides on either the operation plate or the fixed substrate. By providing the operation plate with a horizontally long oblong hole for restricting the sliding width, and by disposing a fixing pin for restricting the sliding width of the operation plate in the oblong hole in the fixed substrate, a normal state is provided. Then, by operating the handle, the latch is rotated to hang or remove the latch on the main body, and in an emergency, the latch is slid along the long hole to keep the door inside. Special feature Inside unlocking structure of the door structure to.

According to this aspect, a long hole is provided in the operation plate, and a fixing pin is provided in the fixed substrate in the long hole to slide the operation plate in the lateral direction to pull a latch,
It is possible to provide an internal unlocking device having a door structure that can be easily escaped from the inside to the outside of the door with a simple structure and a simple operation without pushing.

Further, as still another gist of the present invention, there is one in which the door is easily opened from the inside by holding the operation plate by providing the latch with the operation portion as a protrusion.

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those shown in FIGS. 27 to 37 are designated by the same reference numerals for description.

[0026]

Embodiment 1 FIGS. 1 to 6 show one embodiment of the present invention, in which FIG. 1 is a main body of a fixed side such as a skeleton, a door frame, and a housing in which a handle body 71 of a flat handle is attached to a door 51. FIG. 2 is a partial cross-sectional view from above showing a normal state (normal state) in which a latch 88 is hung on a receiver 92 of 59, FIG. 2 is a front view of FIG. 1 seen from the inside of the door, and FIG. 71
Partial cross-sectional view of the state where the latch 88 is removed from the main body 59 by
4 is a front view of FIG. 3, FIG. 5 is a partial lateral view of an emergency state in which the latch 88 is removed from the inside of the door 51, and FIG. 6 is a state in which the door 51 is further opened from the state of FIG. FIG.

In these figures, reference numeral 1 denotes a channel-shaped base body which is formed by bending both sides in the longitudinal direction to form guide plates 4 and 4 ', and the back side of the handle main body 71 is provided in the substantially central square hole 3 provided in the base body. A rectangular shaft portion 80, which serves as a rotating shaft of the handle, is inserted into (inside the door), and these are screwed with a latch mounting bolt 58 via the washer 2. Further, one end portion in the longitudinal direction of the base body 1 is integrally formed with a swelling 4 ″ provided with an attachment plate 5 that crosses the channel-shaped guide plates 4 and 4 ′ and holds the base portion 6 of a latch 88 described later. Further, the guide plates 4 and 4 ′ serve as a reinforcing member, and two pins are installed between the two guide plates at a constant interval, and one of the pins is used as the operation pin 7 as the operation plate 8.
And the other pin becomes the action pin 9 and the latch 88 is
Each is rotatably pivoted.

The latch 88 is integrally formed in a chevron shape on the tip portion 10 which is bent 90 degrees from the substrate 6 and is hooked on the receiver 92 of the main body 59. In order to reinforce the latch, the tip portion 10 is thicker at both corners than the other. Further, by providing the flange portions 11 and 11 'on both sides of the base portion 6 of the latch 88, one end of the flange portion 11 and 11' serves as the latch and the channel-shaped base 1 described above.
The latch 88 is rotatably and pivotally attached to the base body by overlapping the one end portions of the guide plates 4 and 4'and penetrating the action pin 9. Furthermore, the role of the stopper portion 12 for stopping the tip 13 of the operation plate 8 described later is provided between the rising portions 4 and 4'by providing the outside of the corner between the base plate 6 and the tip portion 10 of the latch 88 slightly higher. Are doing

On the other hand, the flange portion 1 is also provided on both sides of the operation plate 8.
4, 14 'are provided, and these are superposed on the guide plates 4, 4'of the base body 1 and pivotally attached by the operation pin 7,
The operation plate 8 is rotatably pivoted about the operation pin 7. On the side opposite to the latch 88 of the operation pin of the operation plate 8, the bolt 1
5, a ball is provided as the grip portion 16. Further, the operation plate is provided with the window hole 17 so that the bolt 58 can be removed from the inside of the door 51, so that the latch 88, the operation plate 8 and the base body 1 can be removed from the door 51. There is.

Further, between the latch 88 and the operation plate 8, there are stoppers 18 and 19 fixed by spot welding, respectively.
Two tension springs 20 are arranged between them.

Next, the opening and closing of the door from the main body in the normal state of the door structure and the opening and closing in the emergency state will be described below.

To open and close the door 51 in the normal state, the latch 88 on the receiver 92 of the main body 59 is rotated by ejecting the handle main body 71 from the outside of the door 51 and then rotating (as shown in FIG. 31). After removing the latch 88 from 92, the door 51 is pulled outward to open (FIGS. 3 and 4), and on the contrary, the door 51 is returned to its original position and the handle main body 71 is rotated in the reverse direction to receive the latch 88 of the main body 59. Hang on.

On the other hand, as described above, when another worker accidentally closes the door while the worker is inside the distribution board, or because of a fire place, he cannot escape from the entrance, P
In an emergency situation such as when escaping from inside S, from the state of FIGS. 1 and 2, pushing the ball (grip) 16 from inside and outside of the door 51 as shown in FIG. When 8 rotates in the direction of the arrow, the tip 13 of the operation plate 8
Is disengaged from the stopper portion 12 of the latch 88, and the tip portion 10 of the latch 88 is disengaged from the receiver 92 of the main body 59 by the spring 20 that has been exerting a pulling action, and the door is opened as it is due to the pressing force in the direction of the arrow. (Fig. 6).

[0034]

Second Embodiment FIGS. 7 to 13 show another embodiment of the present invention, FIG. 7 is a partial cross-sectional view showing the normal state of the flat handle 71 as seen from above, and FIG. FIG. 9 is a left side view of FIG. 8 as seen from the inside (of the door). 10 and 12 are explanatory views of the state in which the pulling wheel 16 'is pulled from FIG. 10 in an emergency and its perspective view, and FIGS.
FIG. 13 is an explanatory view and a perspective view showing a state in which the latch is completely removed from FIG. 12.

The difference between the second embodiment and the first embodiment is that in the first embodiment, the ball 16 of the operation plate 8 is the operation pin 7.
Since it is located outside of the position (position farther from the tip 13), the door is opened just by pushing the ball 16 in an emergency, but the pulling ring 16 'is near the latch 88 in the second embodiment. However, it is the main one. Therefore, Example 2
The escaper in the door is to pull the pulling ring 16 'once to remove the tip 13' from the stopper portion 12 'of the latch 88 and then push the door outward to open it.

The other difference between the second embodiment and the first embodiment is that in the latter case, the corner portion of the latch is slightly raised to provide the stopper portion 12, but in the former case, the stopper portion 12 is formed.
As can be seen from FIG. 3, two sides of the latch 88 in the width direction of the corner portion are projected, and the tip 13 ′ of the operation plate 8 is hooked and fixed to this.

Therefore, in the normal state of the second embodiment, the first embodiment is used.
Exactly the same, that is, from the outside of the door 51 to the handle body 7
1 is rotated to remove the latch 88 from the receiver 92 of the main body 59, open the door 51, return the door 51 to the original position, and then rotate the handle main body 71 to close it. On the other hand, in an emergency, by pulling the pulling ring 16 ′ toward the front, the tip 13 ′ of the operation plate 8 is removed from the stopper portion 12 ′ of the latch 88, so that the latch 88
Is removed from the receiver 92 of the main body 59, and then the door 51 is opened by pushing from the inside to the front.

[0038]

Third Embodiment Further, another embodiment of the present invention will be described with reference to FIGS.
In the embodiment of FIG. 31, the handle main body 71 is popped out and then rotated to remove the latch 88 from the main body 59, while as shown in FIGS. This is applied to open the door only by popping out at 79. That is, in the normal state, the handle body 71 shown in FIGS.
By popping out of the handle case 61, the tip of the hook 105 is moved inside the cloud-shaped hole 95 of the latch 88 by the spring 79, and the latch 51 is pushed down to remove the door 51 from the main body 59. is there. Further, in an emergency, as in the case of FIG. 6 and FIG. 11 described above, by pushing the grip portion 16 of the operation plate 8, the tip of the operation plate is removed from the latch 88, and the door is opened inside. It should be noted that the present embodiment is applied to the embodiment of FIGS.
Of course, the door can be opened by pulling 6'and then pushing.

[0039]

Fourth Embodiment FIGS. 14 to 19 show another embodiment of the present invention, and FIGS. 14 and 18 are a partial lateral view and a perspective view showing the normal state of the flat handle 71 as seen from above. FIG. 15 is a front view of FIG. 14 seen from the inside of the door, and FIG. 16 is FIG.
17 is a left side view of FIG. 5, FIG. 17 and FIG.
FIG. 6 is an explanatory view and a perspective view showing a state in which a latch is removed by pulling 6 ″.

The fourth embodiment differs from the above-mentioned embodiments in that the base body 1 provided with the channel-shaped guide plates 4 and 4 '.
The latch 88 is pivotally mounted by the action pin 9 so as to be in line with the base body 1 without providing the attachment plate 5 (FIG. 14).
Through FIG. 16). Normally (normal state), when a person enters from the outside of the door to the inside, by pulling out the flat handle in this state or by turning the handle after popping it out (FIG. 31), the latch 88 is simultaneously rotated to cause the main body 59 to rotate. Remove more.

On the other hand, when a person is inside the door (in an emergency), pulling the pulling ring 16 "from the inside of the door to the front causes the tip 13" of the operation plate to reach the tip of the latch 88 (of the main body 59). It is removed from the punching projection 21 provided in the portion that enters the receiver 92 (FIGS. 17 and 19). Simultaneously with this pulling, the latch 88 comes off the receiver 92 of the main body 59, and then the door 51
It is opened by pushing from the inside to the outside.

[0042]

Fifth Embodiment Another embodiment will be described with reference to FIGS.
2 and the lever handle shown in FIGS. 23 and 24.

FIG. 20 shows the handle body 7 of the flat handle.
1 is a partial cross-sectional view of the state in which the internal unlocking device of the door structure of the present invention is attached from the top, FIG. 21 is an attachment explanatory diagram of FIG. 20, and FIG. 22 is a perspective view after attachment. .

The embodiment of the present invention is different from the above-mentioned embodiments in that the operating plate 8 and the latch 88 constitute a single operating plate-like latch 25, and the upper and lower portions of the plate 25 have a U-shaped cross section. Guide rails 23 and 23 'are provided, and these are slid in the left-right direction on the fixed substrate 24 fixed to the shaft portion 80 of the handle body 71 with screws 86, so that the latch 8
8 is to be put in and taken out from the receiver 92 of the main body 59.
Screw 8 as a fixing pin to which the fixed substrate 24 is attached
6 is positioned in a long hole 26 provided in the central portion in the sliding direction of the operation / use latch 25 to regulate the left and right sliding width.

That is, in the present embodiment, by rotating the flat handle, the height adjusting spacer 81 provided with the shaft portion 80 having a quadrangular outer periphery and the quadrangular hole that fits in the shaft portion 80 is provided in the central square hole 27 of the fixed substrate 24. Due to the entering structure, by rotating the latch 25 for both operation and the fixed substrate 24, the latch 25
Is removed from the receiver 92 of the main body 59, and the door 51 is opened by pulling it from the outside. To close the door 51 to the main body 59, the reverse operation is performed.

Therefore, in an emergency, such as when a person is trapped inside the door 51, that is, the operating and operating latch 88 is received.
When a person is trapped inside the door in the state of being in 2, the person inside the door slides the operation / combination latch to the left (arrow) from the state of FIG. , Push the door 51 outward from the inside to open the door and escape. Although the flat handle of the above-described embodiment is constructed such that the handle is flipped up and then rotated, the present invention is not limited to this, and the handle 79 is flipped up by the spring 79.
This embodiment also includes the case where the latch 88 is removed from the receiver 92 of the main body by the hook 105 shown in FIGS. 34 to 37.

23 and 24, on the inside of the door of the handle 52, a square protrusion provided with a screw 58 as a fixing pin is projected to the inside of the door, and the fixing pin 58 has a straight operation and latch. A latch 25 which is located in the long hole 26 of 25 and slides left and right along the guide rails 23 and 23 '.
The sliding amount is restricted, and in an emergency, the latch 25 is removed from the main body to escape from the inside of the door.

[0048]

According to the present invention, normally, the handle is operated from the outside of the door to open and close the latch of the door from the main body.
In an emergency, the latch can be easily removed from the main body even from the inside of the door, so that it can be easily escaped from the inside of the door.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a flat handle.

FIG. 2 is a front view of FIG.

FIG. 3 is a partial cross-sectional view of the latch of FIG. 1 removed from the main body.

FIG. 4 is a front view of FIG.

5 is a partial cross-sectional view showing a state where the ball of FIG. 1 is pushed in the direction of the arrow and the latch is removed from the main body.

FIG. 6 is a partial cross-sectional view showing a state in which the door of FIG. 5 is opened by further pressing the ball.

FIG. 7 is a partial cross-sectional view of a flat handle which is an embodiment different from that of FIG.

FIG. 8 is a front view of FIG.

9 is a left side view of FIG.

10 is a partial cross-sectional view of the state in which the pulling ring in FIG. 7 is pulled a little.

11 is a partial cross-sectional view showing a state where the pulling ring of FIG. 10 is further pulled to remove the latch from the main body receiver.

12 is a perspective view of FIG.

FIG. 13 is a perspective view of FIG.

FIG. 14 is a partial cross-sectional view of a flat handle as another embodiment different from those of FIGS. 1 and 7.

FIG. 15 is a front view of FIG.

FIG. 16 is a left side view of FIG.

17 is a partial cross-sectional view of the pulling ring of FIG. 14 with the pulling spring removed from the latch.

FIG. 18 is a perspective view of FIG.

FIG. 19 is a perspective view of FIG.

20 is a cross-sectional view of a plane handle as an embodiment different from FIGS. 1, 7 and 14. FIG.

FIG. 21 is an exploded perspective view showing a state where the flat handle of FIG. 20 is attached.

22 is an assembled perspective view of FIG. 21. FIG.

23 is an exploded perspective view of another embodiment different from FIG.

24 is an assembled perspective view of FIG.

FIG. 25 is an assembled perspective view of another embodiment of FIG.

FIG. 26 is a perspective view of the base body in FIG. 25.

FIG. 27 is an exploded perspective view showing a mounting state of a conventional lever handle.

28 is an assembled perspective view of FIG. 27. FIG.

FIG. 29 is a front view of the conventional flat handle from the outside of the door.

30 is a vertical sectional view of FIG.

FIG. 31 is an explanatory view of a state in which the latch is removed from FIGS. 29 and 30.

FIG. 32 is an assembled perspective view of a conventional flat handle.

33 is an assembled perspective view of FIG. 32. FIG.

FIG. 34 is a vertical cross-sectional view of a conventional flat handle different from FIGS. 29 to 33.

35 is an assembled perspective view of FIG. 34. FIG.

FIG. 36 is a vertical cross-sectional view of the handle with the handle popped out from FIG. 34;

37 is an assembled perspective view of FIG. 36. FIG.

[Explanation of symbols]

1 Base attached to the back of the handle 88 premium 8 operation board 7 Operation pin 9 Working pin 16 balls (holding part) 16 ', 16 "pulling ring (grip) 20 tension spring 21 Protrusion 22 spring 23, 23 'Guide means (guide rail) 24 fixed board 51 door 58,86 fixing pin 59 body

Claims (8)

[Claims] 1. A door structure in which a handle on the outside of a door is operated to hang or remove a latch on a main body on a fixed side such as a housing, a skeleton, or a support, in a base body connected to the handle inside the door. It consists of an operating plate pivotally attached by an operating pin and the latch which is rotatable by an operating pin provided inside the door via the operating plate and a spring, and in the normal state, the operation is performed by operating the handle. While the plate is in contact with the latch by the tensile force of the spring, the base body, the operation plate and the base are rotated to hang or remove the latch on the main body, and in an emergency, the operation of the operation plate is performed. By pushing a part away from the pin to release the operating plate from the contact state with the latch, the spring is used to remove the latch from the main body to open the door inward. Door structure Internal unlocking device. 2. In the emergency state, by pulling a portion of the operating plate away from the operating pin, the operating plate is removed from the latch, and the latch is removed from the main body by the spring, and the door is opened inside. The internal unlocking device of the door structure according to claim 1, wherein the internal unlocking device is a door structure. 3. The internal unlocking device for a door structure according to claim 1, wherein a grip portion is provided at a position apart from the operation pin. 4. The operation plate and the latch are pivotally attached to each other by an operation pin and an action pin which are pivotally attached to the base body, and when the latch is hooked on the main body, the operation plate and the latch are together with the tip of the operation plate. An internal unlocking device for a door structure according to any one of claims 1 to 3, wherein an attachment plate is provided on the base body so as to sandwich the base of the latch. 5. In a door structure in which a handle on the outside of a door is operated to hang or remove a latch on a main body on a fixed side such as a housing, a skeleton, or a pillar, the door is connected to the inside of the door of the handle. One side is pivotally attached to the base body by an operation pin and a spring is rotatably attached by an operation plate provided by a spring to urge the side opposite to the pivotal point in an opening direction, and an action pin provided on the other side of the base body. In the normal state, by operating the handle, the tip of the operation plate is brought into contact with a protrusion provided on the latch to align the latch with the substrate. The operation pin in an emergency state by pulling a position apart from the operation pin of the operation plate to remove the tip of the operation plate from the projection by using the action pin as an axis to lock the latch by the spring. Is it the main body? An internal unlocking device having a door structure, characterized in that the door is opened inward by removing the door. 6. The internal unlocking device for a door structure according to claim 5, wherein a grip portion is provided on the operation plate opposite to the operation pin. 7. A door structure in which a latch is hung on or removed from a main body on the fixed side such as a casing or a frame by operating a handle on the outside of the door, and a fixed substrate fixed to the inside of the door of the handle, An operation plate having a latch at a tip portion made slidable along the substrate in the direction of the main body, the sliding guide means is provided on either the operation plate or the fixed substrate, and the operation plate is provided with the guide member. In order to operate the handle in a normal state, a horizontally elongated hole for restricting the sliding width is provided, and a fixing pin for restricting the sliding width of the operation plate is arranged on the fixed substrate in the elongated hole. In order to open or close the door by sliding the latch along the long hole while rotating the latch by hanging the latch on the main body or removing it. Characteristic door structure internal unlocking Construction. 8. The internal unlocking structure for a door structure according to claim 7, wherein an operating portion for facilitating sliding of the latch is provided on a side of the latch opposite to the main body.