JPS61282569A - Emergency outlet locking device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exit device comprising a tack bolt arrangement mounted on one surface of a door member and a cooperating strike arrangement mounted on a door frame member such as a mullion. More particularly,
The present invention relates to an egress device primarily intended for outward-opening metal doors that remain locked when subjected to severe distortions of the type caused by fire or other large forces.

As recognized in the art, it may be desirable, if not important, to maintain a closure device, such as a door, closed. For example, when a car is involved in an accident, it is generally believed that it is best to keep the doors closed to prevent the occupants from being thrown from the car onto the road. However, it has been found that in an accident where the vehicle is subject to significant forces, the vehicle door will open due to the impact of the collision causing the door frame to distort, causing the door latch to disengage from the door strike. Ta. Similarly, emergency or fire doors, which preferably remain locked during a fire, often open due to distortion of the door or door frame members, causing the door latch to disengage from the door strike. Similarly, warping or dislodging of door members can occur during a fire when excessive force is applied to the door member as a result of the force of water from a fire hose.

In the past, various attempts have been made to provide egress devices that prevent accidental opening of a closure device, such as a door, due to distortion of the door member. U.S. Pat. No. 2,709,612 describes an exit device for use in a motor vehicle door to prevent accidental opening of the door due to distortion of the vehicle frame member. The described opening comprises a door member projecting from the free or unlocked edge of the door and a cooperating socket in the side post which receives the door member when the door is closed. To provide the desired mutual locking engagement, the outer free or projecting end of the door member is deflected from its root portion in a vertical and/or inward direction of the cooperating jamb to provide an overhang; A socket arrangement is then correspondingly formed in the side post to receive the deflected door member. In a preferred form, the closure device has a lug or dovetail member fixed to the free edge of the door, projecting slightly outwardly from such edge; The member is configured to be received in a socket member in the frame. Preferably, the lug and its cooperating socket are positioned as close to the door latch member as possible to provide maximum resistance to edge separation at that point. U.S. Pat. No. 4,401,330 describes a locking method and apparatus for securing or retaining a closing device, such as a door, when the door member is thermally distorted by fire. That is, the opening and disengagement of the door latch occurs because the door frame member, such as the mullion that holds the door strike, is fixed at its lower end to the floor and at its upper end to the ceiling. It is described that. Door members tend to lengthen when heated.

However, because it is fixed, the door member is only able to extend, causing distortion and deformation which can result in the locking or latching device becoming disengaged. In order to eliminate this distortion and unlocking, the aforementioned U.S. Pat. No. 4,401
．． No. 330 suggests having free space at either the top or bottom of the frame member to allow room for expansion and avoid distortion. According to the patent,
A latching device is obtained which is always disengaged under normal conditions, but becomes engaged upon expansion due to thermal forces and which holds the door or door frame, such as a mullion, in a locked condition. . U.S. Patent No. 4.437.6
No. 93 states that when excessive heat is present, such as in the event of a fire, the blocking plate melts and slides into the operating position to prevent contraction of the latching device and, as a result, to prevent the device from latching. A latching mechanism is described that has a cover to prevent removal. The patent provides a kit member that allows the blocking member to be used with an existing door frame.

There are problems with the aforementioned patents, and the solutions to the problems are not entirely satisfactory due to the complexity and/or necessity of changing the closure structure.

Accordingly, a principal object of the present invention is to include a latching device and a cooperating strike device for locking a closing device, such as a door, and which remains locked when subjected to distorting forces, including thermal forces. The goal is to provide the following.

It is another object of the present invention to include a tightening bolt system and a cooperating strike system for locking the closure device and to maintain the closure device locked even when subjected to straining forces, which is simple to manufacture and The objective is to provide an outlet device that is inexpensive.

The above objects of the present invention will become clear from the description based on the embodiments shown in the drawings.

It is an object of the present invention to provide a solid plate member provided with a tack bolt arrangement for fastening to the surface of a door and a strike device for attachment to a door frame member or mullion operative in conjunction with the tack bolt arrangement. This is accomplished by providing an egress device designed primarily for outward-opening doors. The front face of the plate member is such that the protruding members are arranged so that one of the protruding members, once installed, is on one side of the bolt of the tightening bolt device. The strike device has a groove for receiving the protruding member. The strike device groove is shaped relative to the protrusion so that the protrusion member moves vertically within the groove to a predetermined distance and abuts the wall of the groove. In the event of a fire or other large distorting force, the rear part of the frame at the latch section will be forced to a large extent due to the engagement of the projecting member with the channel wall, while the projecting member is free and limited to vertical movement. This limits the amount of strain that can occur in the bolt, thereby preventing excessive strain on the bolt that would otherwise cause the bolt to dislodge from the strike. Additionally, the groove projecting members will limit strikes from the latching device and lateral movement of the door frame member. The locking surface of the bolt system will also limit inward movement of the strike and frame members toward the latching system.

Therefore, in the device of the present application, the bolt tightening device is
This ensures that the strike device remains in place even when subjected to large forces such as thermal forces caused by a fire or other physical forces such as impact from a collision. The exit device of the present invention is primarily used for outwardly opening doors in which a tack bolt device is attached to one surface of the door.

Preferred embodiments of the present invention will be described below with reference to the drawings.

1-3 illustrate a door 10, an emergency exit lock and an actuator system 12 for use with the exit device of the present invention. As shown, the door 10 is provided with a housing 14 on one surface 10a, a dry bolt arrangement 30, and a cover 1 for the dry bolt arrangement 30.
6 and a bushing par 18 for actuating and releasing the latch 32 of the bolting device 30.

As seen in FIG.
b, the actuating mechanism extending through the door. The strike device 50 is a bolt tightening device 3.
0 and fastened to the door frame member, that is, the mullion 20.

As can be seen, the illustrated device includes a knob 34;
Preferably, a simple internal locking mechanism may be used to allow the door to be opened from the outside with a key, and at times it may be desirable to have neither a knob nor a key mechanism. These forms are not important to the invention.

As best seen in FIG. 4, the exit device includes a tightening bolt device 30 and a strike device 50. The bolt assembly 30 comprises a rigid metal front or base plate 31 from which projecting members or lugs 34 and 36 extend, and a plurality of mounting holes 38 for attaching the base plate to the door or closure member 10.
A bolt mechanism 40 is provided. The bolt tightening mechanism 40 includes a main tightening bolt 32 and a secondary tightening bolt 33.
and both pivot on pin member 35 with respect to return spring 35a.

It should be noted that, as best shown in FIGS. 8 and 9, the base plate 31 is of heavy, rigid metal with mounting holes therein positioned on each side of the pivot pin members 35. Reinforcing supports are provided to prevent twisting of the device at critical points when subjected to large forces such as a fire. It is also noted that the bolt 32 has a pin 32a on each side of the bolt 32 spaced from the pivot pin 35, which is a banana bolt as best seen in FIGS. 9 and 10. It is on type curve 32b. The pin 32a riding on the banana-shaped curve 32b prevents the mechanism from twisting when subjected to a large force such as a fire.

As shown in FIG. 11, the bolting device includes a stake member 31a fixed to the bottom side of the base plate 31 and bent into a groove 31b of the base plate 31 and recessed therein.

As best seen in FIG. 11, an auxiliary fastening takes place at 31c. Even if the fastening of the pile member 31a equipped with the screw device 31d is again subjected to a large force such as a fire, the base plate 3
1 to prevent the bolt mechanism 40 from coming off and breaking.

Strike device 50 includes a fastener or base plate 52 having a plurality of holes or slots 58 for attaching the device to a frame member.

This device also includes the protruding member 34 of the bolting device 30.
and 36. As shown, grooves 54 and 56 are wider than projecting members 34 and 36 to allow limited vertical movement of the projecting members within the grooves. The device 50 also includes a slot 5 for receiving and retaining the bolt 32.
1 and lamp 53, thereby keeping the door closed.

As can be seen, the lugs or projecting members 34 and 36
A front or base plate 31 configured integrally with
It is made of rigid metal and has a solid structure. The bolt system attached to the base plate 31 according to the present invention may generally be that of the conventional bolt system shown and described in commonly assigned U.S. Pat. No. 3,877,262. . However, the crimp bolt device shown in the drawings is a means for fastening the crimp bolt mechanism 40 to the base plate 31 by the pile member 31a, and the crimp bolt 32 is attached to the curve 32b.
A point of means for fixing the base plate 30 to the mechanism with a pin 32a resting on the pivot pin 3 through the hole 38.
5 is distinctive in the means for fixing it to the door member 10 at directly opposing locations. The strike device is also of rigid metal unitary construction.

Figures 8 and 9 are views similar to Figures 1 and 3, but in Figures 8 and 9 a double door arrangement is shown. As shown in FIGS. 8 and 9, the strike device 50 is attached to the opposing surface of the mullion 20 and is adapted to engage the tightening bolt device 30.

The operation of the outlet device of the present invention is best illustrated in FIGS. 5, 6 and 7. As shown, do.

A 10 has a fastener 37 on its surface 10a, so the tightening bolt device 30 can be attached. As clearly shown in FIG. 5, the door has a reinforcing plate 10c. A fastener 5 is attached to the door frame member 20 having the reinforcing plate 20a.
A strike device 50 with 7 is installed. As shown in Fig. 6, tighten the bolt 3
2 engages slot 51 and ramp 53 to lock the door to the frame member. As shown in FIG. 5, when the door and frame are in locking engagement, the projecting members 34 and 36-
There is sufficient space X to allow limited vertical movement within grooves 54 and 56. As shown in FIG. 7, the latch member 36 has a space Y for limited lateral movement inwardly within the groove 54 and a space 2 for limited lateral movement outwardly.

In normal operation, the exit device of the present invention functions similar to a conventional mating bolt and strike device. However, the present device normally does not allow the protruding member in the front plate 31 to move when subjected to large distorting forces of the type that would result in a hinge-type action that unlatches the strike by introducing a cam angle. 34 and 36 move the door from the mullion with the mullion 20 in the same manner as the mullion turns toward the fire in the latched area by engaging the walls of the strike device grooves '54 and 56. This prevents them from leaving. During a fire, expansion of the rear portion of mullion 20 causes the protruding member 34 of plate 31 to
and 36 engage the walls of the strike device grooves 54 and 56 and are restricted in the latching area and as a result of the raised portion of the strike engaging the sides of the bolt bolt 32 and This prevents excessive tension on other latching system components. This restriction also ensures that the auxiliary latch 33 of the deadlock mechanism does not become disengaged from the strike projection, rendering the deadlocking action of the tightening bolt useless. The projecting member limits lateral movement of the strike and mullion from the latching device and limits inward movement of the strike and mullion toward the latching device by the fixed surface of the latching device, thus stabilizing the device.

The deadlock mechanism shown in FIG.
Details are shown in issue 2.

As will be apparent to those skilled in the art, various modifications may be made within the scope of the foregoing. It goes without saying that such changes and modifications form part of and are included within the scope of the invention.

[Brief explanation of the drawing]

1 is a front elevational view showing a closure device and a wall member using the exit device of the present invention; FIG. 2 is an enlarged view of a portion of the device of FIG. 1; FIG. 3 is a sectional view taken along line 3, FIG. 4 is an exploded perspective view showing the bolt tightening device and strike device of the exit device of the present invention, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3, and FIG. Figure 6 is a cross-sectional view taken along the line 6-6 in Figure 5, Figure 7 is a cross-sectional view taken along the line 7-7 in Figure 5, and Figure 8 is a top view of the tightening bolt device for mounting on the door. FIG. 9 shows the first side of the bolting device, partially shown in fragments for convenience; FIG. 10 shows the second side of the bolting device, with certain parts omitted for convenience. 11 is a bottom view of the bolting device, FIG. 12 is an elevational view showing the exit device of the present invention in a double door, and FIG. 13 is shown at 13-13 in FIG. 12. FIG. 10... Door, 12... Exit lock device, 14...
・Housing, 16... Cover, 18... Bush bar, 30... Tightening bolt device, 32... Tightening bolt, 34... Knob, 20... Door frame member,
50... Strike device, 34. 36... Projecting member, 33... Tightening bolt from auxiliary, 31... Base plate, 35... Pivot pin member, 4o... Tightening bolt mechanism, 54. 56... groove, 51...
-・Slot, 53...Lamp.

Claims (1)

[Scope of Claims] 1. A locking mechanism including a bolting bolt device and a mating strike device, wherein the bolting bolt device includes a bolting bolt mechanism that includes a base plate and a latch, and a locking bolt mechanism that includes a base plate and a latch. a mounting device for attaching to the base plate, the base plate having a device for securing the base plate to a closing device such as a door, and two upright projecting members, one of the upright projecting members comprising: said dowel bolt mechanism being on one side of said latch of said dowel bolt mechanism when attached to said base plate, said strike device comprising a front plate and means for securing said front plate to a closure frame member; and means for receiving the latch and a groove in the device for receiving the projecting member in the tack bolt device. 2. The groove in the strike device is wider than the protruding member in the base plate to allow limited vertical movement of the protruding member within the groove. A locking mechanism according to the first term of the range. 3. The groove is not substantially deeper than the projecting member, but is thicker to allow limited lateral movement of the projecting member within the groove. A locking mechanism according to claim 2. 4. The locking mechanism according to claim 3, wherein the tack bolt device includes an auxiliary latch. 5. The bolt mechanism includes a pivot pin for the latch, and the device for securing the base plate to the closure device includes a pivot pin of the base plate in substantially direct alignment with the pivot pin of the bolt mechanism. A locking mechanism according to claim 1, characterized in that it includes a hole. 6. The device for attaching the bolt mechanism to the base plate includes a stake member, and the base plate includes an opening for receiving the stake member and a screw device for fastening the stake member to the base plate. The locking mechanism according to claim 5. 7. The bottom of the base plate includes a groove, and the stake member is bent to be flush with the groove, and the bent stake member is fixed to the base plate with a screw device. A locking mechanism according to claim 6. 8. The bolt mechanism includes a pin spaced apart from the pivot pin, and the bolt mechanism includes a bent slot for receiving the pin. The locking mechanism described in. 9. An exit device comprising an outwardly opening closure device and a cooperating closure frame member, said closure device having a locking bolt arrangement fixed to its internal surface, and said closure frame member having fixedly having a strike device that mates with the locking bolt device, the locking bolt device including a base plate secured to the closure device and a latch and an attachment device for attaching to the base plate; a bolt mechanism; the base plate has two upright projecting members, one of the upright projecting members being on one side of the latch of the bolt mechanism; The strike device further includes a front plate secured to the closure frame member, the device further comprising a groove for receiving the protruding member into the bolt arrangement, and a groove for receiving the latch into the bolt arrangement. an exit device comprising: a receiving device; and an exit device. 10. The exit device of claim 9, wherein said groove is slightly wider than said projecting member to allow limited vertical movement of said projecting member in said groove. . 11. Claims including: said groove being substantially less deep and thicker than said projecting member to permit only limited lateral movement of said projecting member in said groove; Exit device according to clause 10. 12. The exit device of claim 11, wherein the tack bolt device includes an auxiliary latch. 13. The bolt mechanism includes a pivot pin for the latch, and the device for securing the base plate to the closure device includes a pivot pin of the base plate in substantially direct alignment with the pivot pin of the bolt mechanism. 10. Exit device according to claim 9, characterized in that it includes a hole. 14. The device for attaching the bolt mechanism to the base plate includes a stake member, and the base plate includes an opening for receiving the stake member and a screw device for fastening the stake member to the base plate. 14. An outlet device as claimed in claim 13. 15. The bottom of the base plate includes a groove, and the stake member is bent to be flush with the groove, and the bent stake member is fixed to the base plate with a screw device. , claim 1
Exit device according to clause 4. 16. Claim 15, wherein the bolt mechanism includes a pin spaced from the pivot pin, and wherein the bolt mechanism includes a bent slot for receiving the pin. Exit device as described.