FI97413C - Door locking mechanism - Google Patents

Description

97413

DOOR LATCH MECHANISM SPÄRRMEKANISM FÖR DÖRR

The present invention is directed to a latch mechanism for opening and locking a door. The latch mechanism has at least one latch mechanism mounted on the door frame, its upper, lower or side edge 5, and in its locking position locks the door to the door frame or threshold; an opening button or puller for opening the latch mechanism, which opening button or puller is arranged on the first side of the door, preferably inside the door; at least one traction member, such as a traction rod 10 or wire, connecting the release button or puller to said at least one latch mechanism, and means for converting the movement of the release button or puller into traction movement of the traction member so that the release button or puller holds the latch mechanism in its open position. Preferably, the release button or puller, in its rest position, allows the bar mechanism to move freely from the open to the locked position.

Latch mechanisms as described above are used, inter alia, in emergency exit doors. These doors are often in two parts, i.e. the door consists of two halves. The first half is usually locked from the outside unopened by a latch mechanism. The second half of the door, which can be freely opened, is used as a passage door. Passage through the door 25 can be prevented by a lock, which is usually mounted on the access door.

When the lock is placed in the locking position, it locks the access door to the opposite side size, i.e. locked with a latch mechanism, so that the access door cannot be opened without opening the lock. However, for emergency exits, it must be possible to open the doors from the inside. For this purpose, an opening button or puller is placed inside the door half locked by the latch mechanism, from which by pulling the locking bars of the latch mechanism can be pulled inwards from the edges of the door so that the latch unlocks. Thus, this generally unopened door half: 35 and with it the access door locked to it with a lock can be opened from inside the door in an emergency 2 97413. After an emergency exit, the door must be closed and locked again. There is no pull or other door handle on the outside of the door half that can be locked by the latch mechanism, from which the latch mechanism 5 could be opened or closed. Sometimes, however, it would be necessary to be able to open this door from the outside as well.

Finnish patent application FI 934958 discloses 10 latch mechanisms comprising latch mechanisms arranged in the upper and lower part of the door, which are connected to the door opening button via a drawbar. When the door is opened, the command of the button, i.e. the pressing to open the latch mechanism, is changed in the button into the pulling movement of the drawbars, which is transmitted as an opening command to the latch mechanisms. With the latch mechanism, the door is opened centrally by pressing a button, whereas both latch mechanisms can be closed independently of each other and without touching the button. The door can be easily and securely closed and locked with a simple push of the door from outside the door.

The latch mechanism disclosed in Finnish patent application FI 934958 can also be used in other types as well: in doors, e.g. one-piece doors, where it is usually necessary to be able to open the door from the outside as well, in which case a rib or pull and means for opening the latch mechanism are needed. So far, no such thing has existed. 1 2 3 4 5 6

U.S. Pat. No. 3,981,164 discloses 2 latch mechanisms comprising latch mechanisms arranged inside the door at its lower and 3 upper edges, which are of two different types. The latch mechanisms are connected to the handle 6 inside the door by means of push rods and a sliding mechanism. When the door is opened, both push rods are raised simultaneously by means of the handle and 1 reading piece 3 97413, whereby both latch mechanisms open. The re-locking of the latch mechanisms is due to the combined weight of the reading pieces, push rods and latch mechanisms, which must therefore be relatively large. The weight pulls the bars down as soon as the grip on the handle is released, ie already when the door is open, which hinders the closing of the door. To open the door from the outside, a second separate lifting mechanism is built in connection with the sliding mechanism, which operates when the thumb button 10 arranged on the outside of the door is pressed. The separate lifting mechanism comprises a second separate slider which, when pushed upwards, is arranged by means of a different member to lift the reader 1 of the sliding mechanism, which in turn raises the push rods. The thumb button-15 thus has to lift directly both the two sliding pieces and the supporting push rods connected to them, which can be very heavy. In addition to the thumb button, the door has a fixed rib, a small portion of which is visible at the bottom of Figure 2. The proposed construction is therefore very complicated and expensive to manufacture e.g. because the lifting mechanism is built into the sliding mechanism. The dual construction of the sliding mechanism and the lifting mechanism also takes up a relatively large amount of space and protrudes considerably: far out of the door surface, which can cause problems in confined spaces. The proposed lifting mechanism is difficult to retrofit with an existing latch mechanism. The proposed solution cannot be used in conjunction with a latch mechanism in which the latch mechanisms are opened by means of drawbars and locked 30 automatically only when the door closes.

It is an object of the present invention to provide an improvement over the above problems.

It is a particular object of the invention to provide a latch mechanism which can be easily opened both inside and outside the door and which allows the door to be closed with a simple push of the door.

It is a further object of the invention to provide a latch mechanism in which the opening of the latch mechanism also from the outside of the door requires as few special means as possible in addition to what is required to open the door from the inside.

10

The invention is characterized by what is stated in the claims below.

To allow the door 15 provided with the door latch mechanism according to the invention to be opened from one side, the latch mechanism further comprises a rib arranged on the other side of the door, preferably an axially pivotable drawbar, for opening the latch mechanism and 20 means for transmitting the movement of the rib directly to one traction member.

In the latch mechanism according to the invention, the movement of the rib is transmitted from outside the door, preferably as a traction directly to only one traction member and indirectly via a release button inside the door or means arranged in connection with a traction as traction to one or other traction members. The means for transmitting the movement of the rib to the salpame-30 mechanism are operatively connected directly to only one single traction member, from which the movement is transmitted to the other traction members.

A rib, the handle portion of which is e.g. 8 to 18 cm long, typically has to be turned only in an arc of about 5 to 15 degrees around its attachment point 5 97413 to provide the necessary traction in the traction member.

The means for transmitting the movement of the rib to the traction member may consist of a simple spacer connected to the rib and rotating about the axis of the rib, or a spacer formed in the rib itself. the pulling motion.

The spacer or part of the rib which is fixedly connected to the rib is typically connected by a bearing pin to a latch mechanism or door frame, whereby the bearing pin 15 acts as an axis when the rib is turned. The spacer is shaped so that the cam, protrusion, etc. in it, when in the rest position, extends close to the second traction member and in the active position presses this traction member or one of the abutments attached thereto so that a small traction movement is created in this traction member. The rib and the spacer connected to the rib can be formed in one piece or in two separate pieces attached to each other.

A separate abutment, such as a sleeve or the like, is preferably fitted to the traction member to which the spacer is operatively connected when the rib is pulled, which is fitted close to the end of the traction member. Of course, it is conceivable that another member attached to the traction member may act as a stop, but then it is difficult to adjust the position of the stop piece. The position of the sleeve fitted to the end of the traction member can be adjusted e.g. by a nut fitted to the traction member.

The movement of the rib and the spacer attached to it provides a pushing movement via the abutment in the actual traction element in connection with the latch mechanism 6 97413 and in the part of the traction member connected to the release button on the other side of the abutment. Even a relatively thin and flexible traction rod, such as a wire, can be used as the traction elixir. When the abutment piece is fitted right at the end of the traction member, the pushing movement is not provided in the actual traction member but only in other members connected to it, which may be rigid and made of e.g. flat iron.

10

In the solution according to the invention, the means for converting the pressing movement of the release button into a pulling movement of the traction member preferably comprise a first spacer 15 arranged on the shaft inside the opening button, or at least partially inside the opening button. The spacer is typically, for example, an L- or V-shaped piece made of flat iron.

The spacer fitted to the button is typically connected to the traction members of the latch mechanism by means of flat iron members. Said members are fixedly connected at one end to the end of the traction members and at the other. access to the intermediate piece, for example with bearing pins. The spacer can then turn relatively freely about its axis, when the button is pressed, at the same time the spacer pivots about said bearing pins and with respect to the members connected to the spacer, pulling the connecting members and the pulling members towards each other. The members connecting the spacers and the traction members 30 are shaped so that they can be connected to the spacer in the desired manner.

The traction or torsion applied to the rib is transmitted to the other traction member by movements of the spacer connected to the rib, the traction member abutment and the spacer of the button 35, corresponding to the pressing of the release button «7 97413, without applying traction forces directly from the rib. Thus, in the solution according to the invention, when opening the door from the outside of the door by pulling the rib, it is possible to utilize essentially all the inner parts of the latch mechanism which are used when opening the door from inside the door by pressing a button. All that is needed are means to provide traction in a single traction member. In the solution 10 according to the invention, the movement of this traction member is automatically transmitted as a traction movement to another traction member.

The solution according to the invention is therefore very simple. There is no need to fit separate additional members, such as sliders, to the existing members of the latch mechanism 15, as proposed in the aforementioned U.S. patent.

A spring or the like is preferably arranged on the shaft of the rib or on the members fixedly connected to it, by means of which the rib 20 can be automatically returned to the rest position after drawing. The rib can be connected to the latch mechanism so that its active movement is either a torsional movement around the shaft or a traction movement. 1 2 3 4 5 6 7 8 9 10 11

A lock is preferably fitted to the door in connection with the rib, which in the 2 locked position prevents the door from being opened from the outside but not from the inside. The lock bar can be pivoted so that it 4 substantially prevents the rib and / or the second spacer 5 connected to it from turning about its axis, whereby the bar 6 prevents the door from being opened by pulling the rib. A lock fitted to the button on the inside of the door 7 prevents, in the locked state, the door 8 from being opened both inside and outside the door. In addition, the rib 9 can be shaped so that its weakest point is in the rib 10 itself close to the surface of the door. In this case, the rib 11 is broken at this point, and not, for example, from the lock, if an attempt is made to force the rib 8 97413 when it is not in the openable position.

In the latch mechanism according to the invention, the latch mechanism is preferably formed, as described in Finnish patent application-5 In hair FI934957, of an actual locking member pivoting the shaft and a slide connected to the traction member with a protrusion or a separate barrier which prevents the locking member from turning open. The locking member is preferably an asymmetric-shaped circumferentially pivotable plate-like member having at least two radially outwardly projecting protrusions forming a locking axis and an indicating axis.

15 In the locked position of the latch mechanism, the actual locking tent of the locking member protrudes out of the door frame into a recess formed in the door frame or the like, locking the door. In the open position of the latch mechanism, the Indikoin title protrudes out of the door frame. When the door is closed, the indicator tent hits the door frame 20 and pivots the pivoting member so that the locking tent in turn protrudes outwards and out of the door frame.

The slider connected to the traction member is preferably connected to a third lug 25 formed in the locking member, e.g. by a spring which tends to turn the locking member into the open position. A fixed blocking piece on the slide prevents the locking member from turning. The slide and the blocking member therein can be pulled away from the locking member by the pulling member so that the locking member no longer prevents the locking member from turning and the door can be opened.

The invention will now be described in more detail by way of example with reference to the accompanying drawings, in which 35 9 97413

Fig. 1 schematically shows a previously known latch mechanism in vertical section partially fitted to a door frame;

Figure 2 schematically shows a part of a latch mechanism according to the invention, and

Fig. 3 schematically shows a part according to Fig. 1 of another latch mechanism according to the invention.

Figure 1 shows a door latch mechanism 10 fitted to a door frame 10 having an inside 12 and an outside 14. The latch mechanism comprises a latch mechanism 16 at both the upper and lower ends of the door. Only the latch mechanism of the lower end of the door, which locks the door to the sill 18, is shown in the figure. A similar latch mechanism is preferably mounted at the top of the door 15. If desired, a similar bar mechanism can also be mounted on the side edge of the door.

The latch mechanism further has an release button 20 for unlocking the latch mechanism. The release button is fitted to the first 20 of the door, i.e. inside it. Traction members 22 and 24 formed of wire connect the release button 20 to the latch mechanisms 16 at the top and bottom of the door.

The release button 20 has means 26 for converting the pressing movement of the release button into the pulling movement of the traction cable. These means comprise a shaft 28 rotatably arranged on an intermediate piece 30, which lattaraudoista formed with connecting members 32 and 34 are connected to vetovaijerei-valves 22 and 24 opening button in the depressed door 30 spacer 30 rotates in the arrow direction and provides a means of pulling motion members 32 and 34 of the cable pulleys 22 and 24.

The latch mechanism 16 comprises a shaft 35 pivot member 35 38, which is preferably a plate-like member having an asymmetrically shaped circumference 10 97413 with at least two radially outwardly projecting projections 40 and 42. The plate-like member is arranged in the door frame so that its axis extends substantially plane level. in accordance with the horizontal. The protrusions of the plate-like member form a latch mechanism locking bolt 40 and an indication bogie 42. The locking bolt 40 is arranged in a locked position to protrude from the door frame into a recess 44 formed in the threshold 18. The indicator bolt 42 strikes the threshold as shown in FIG. turn the locking axle down and out of the door frame.

The latch mechanism further comprises a slider 46 connected to a third protrusion 15 15 formed in the pivot member 38 by a spring 50 which holds the slider in a down position. Attached to the slide is a blocking member 52 which, when the locking roller is in the locking outer position and the slide is in the lower position, prevents the pivoting member 38 from pivoting about its axis and the door from opening. The traction cable 22 20 is connected to the slider 46, whereby the traction movement in the traction cable when opening the door pulls the slider 46 and the blocking piece 52 upwards and releases the member 38 in the opposite direction to the arrow shown in the figure. 1

Figure 2 is an enlarged view of a part of the latch mechanism according to Figure 1, to which a mechanism 54 according to the invention has been added for opening the door also from the outside. The mechanism according to the invention comprises a rib 56 with a shaft-pivoting projection 57 by means of which the rib is mounted on the shaft 58. A spacer 60 is also arranged on the shaft, which is operatively connected to a traction cable 24. The protrusion 63 of the spacer 60 shown in Fig. 2 is adapted to penetrate the rib into the recess 61 at the end so that the spacer is tied to the rib and the movement of the rib is transmitted to the spacer 35. The spacer and the rib can, of course, 11 97413, if desired, be made as a single piece, e.g. by casting.

The spacer 60 has a protrusion 62 which, when the rib is pulled, the rib 5 rotates in the direction of the arrows and the spacer 60 pivots about its axis 58, strikes a stop 64 arranged on the traction cable 24, causing traction on the wire and door top mechanism (not shown). opening. The position of the abutment 64 10 on the wire can be adjusted by the nut 66. As the protrusion 62 pushes the abutment, it simultaneously provides a push movement in the pull member 24 and the button connecting member 34 and the pivot release button spacer 30, which in turn provides traction in the lower drawbar 22 and lower door. . A spring 59 is fitted to the shaft 58, which returns the rib to the rest position when it is no longer subjected to traction.

20 In Figure 2, the rib 56 is connected to the upper wire 24, whereby pulling or twisting from the lower part of the rib provides a downward movement in the protrusion 62 and the pull wire 24. Of course, if desired, the rib can be operatively connected to the lower tension wire 22 and the abutment 25 therein. The rib and the intermediate piece connected to it are then mounted on the door upside down, whereby pulling from the upper part of the rib in the protrusion fixed to the lower wire and downward movement is made in the wire 22 itself.

1 30

Fig. 3 shows a part of the latch mechanism according to Fig. 2, in which a lock 68 is further arranged, by means of which the opening of the latch mechanism can be prevented by pulling the rib. The lock bar 70 can be locked in such a position that it. 35 locks the end 72 of the rib immobile, so that neither the rib nor the intermediate piece connected to it can be moved, nor can the door be opened from the outside. Of course, despite the lock attached to the rib, the door can be opened from the inside if the button is not locked. The lock fitted to the button 5, on the other hand, prevents the door from being opened from both the inside and the outside.

The latch mechanism is preferably made so that its weakest point is at the point 74 of the rib 56 where the rib 10 penetrates into the door, whereby the locking mechanism cannot be broken and the door opened by malicious pulling on the rib.

The latch mechanism according to the invention makes it possible to open a door locked with a long latch-15 lock with a simple one-handed movement, by pulling the door latch. The solution according to the invention does not require two separate handles, a handle for opening the latch and a handle for opening the door, because the rib mounted on the door acts as both a latch opener and a door 20 handle. The door is opened by simply pulling the latch, whereby the latch automatically pivots just the small angle necessary to activate the drawbars / cables and open the latch.

. The invention is not intended to be limited to the application examples set forth above, but is intended to be broadly applicable within the scope of the inventive idea defined by the following claims.

Claims (8)

A door locking mechanism (10) for opening and reading the door, the locking mechanism comprising 5 - two control mechanisms (16), arranged in the door frame (12, 14) at its upper and lower edges, which control mechanisms in the reading position laser the door at the door frame and the threshold (18) or the like; - a push handle (20) or a pull handle for opening the locking mechanism, which push handle or pull handle is arranged on a first side (12) of the door, advantageously on the inner side of the door; - at least two pulling means (22, 24) directed in different directions, such as drawbars or wires, which join the push handle or pull handle with said control mechanisms, and which bed is joined by means of connecting means (32, 34) to a round handle arranged its shaft (28) rotatably first spacer (30), for transmitting the pressure movement of the push handle (20) in a pulling motion in the two pulling means 20, such that the push handle or pull handle in active position is inclined to the control mechanism in the open position, characterized therein. that the locking mechanism of a door further comprises - - a gripping handle (56) arranged on the other side of the door, such as a pull handle, for opening the locking mechanism, and - means (58, 60, 62, 64) for direct transfer of the gripping mechanism. the movement of the handle to a pulling member (24), to effect a pulling movement in this pulling member. 1 2 3 4 5 6 2. Locking mechanism according to claim 1, characterized in that. 2, the means (30, 32, 34), for transmitting the movement of the push handle 3 in a pulling movement in the pulling means, comprise 4 - an intermediate piece (30) arranged in the push handle, which 5 of a movement in the push handle rotates about its 6 axis (28 ), and a pulling member (22, 24) and the connecting member (32) connecting member (32, 34), which connecting member is at one end firmly coupled to the towing member and at its other end is movably coupled to the adapter member, In that the spacer as it rotates about its axis (28) causes a pulling motion in the pulling member, and that the means (58, 60, 62, 64) for transmitting the grip of the grip handle in a pulling motion in the pulling member comprise - a clutch engaged in the grip handle and, by the movement of the gripper handle around its shaft (58), pivotally arranged second spacer (60) disposed in the vicinity of the pulling member (24) such that said second spacer, as it rotates about its shaft, exerts a pressure on a shaft. when dragging the control member attaches a counterpart (64) causing a pulling movement in the pulling means, and that the control mechanism, where the push handle is in its resting position, allows the control mechanism to move freely from open to read position. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3. Locking mechanism according to claim 1 or 2, characterized 2. said pawl mechanism comprising 3 means for transmitting the movement of the gripping handle to a 4 tensioning movement of said pulling means, said means comprising 5 - a spacer (60) rotatable around said shaft (56), which is functional 7 coupled to the end 8 of the second pulling member (24), 9 - a counterpart (64) attached to said second pulling member (24) at said end, 10, and 12 - the second intermediate piece (60). ) is arranged in the locking mechanism 13 such that as it is pulled in the gripping handle, it rotates about its axis and exerts a pressure on said counterpart causing a pulling motion in said second pulling member (24) and a 16 pressing movement in a second pulling member attached. assembling means (34), wherein said means performing said pressure movement causes a pivotal movement in said first spacer (30) arranged in said pressure handle and thus, a pulling motion in the first pulling member (22). 5 4. Locking mechanism according to claim 2 or 3, characterized in that. that - the tensioning means (22, 24) are tensile wires which are connected by means of plate jam jointing means (32, 34) and 10 pins, connected to a first flat piece made of flat iron (30), which is functionally coupled to the pressure handle of the second bearing pin (30). - the counterpiece (64) is arranged between a pulling member (24) and a connecting member (34) connected thereto, and that a second intermediate piece (60) made of flat iron is attached to the gripping handle (56), a bearing pin is connected to the frame of the locking mechanism so that a projection (62) formed at the second intermediate piece when pulling in the gripping handle presses a counterpart (64) attached to the pulling member, causing a pulling movement in the pulling member (24). 5. Locking mechanism according to claim 1, characterized in that. For example, a spring 25 (59) which is operatively coupled to retract the gripping handle after being subjected to a pulling motion in its starting position is operatively coupled to the grip handle (56) or to a second intermediate piece (60). 6. A locking mechanism according to claim 1, characterized in that. the locking mechanism further comprising a functionally coupled reading mechanism (68) at the gripping handle (56) or a second intermediate piece, the rule (70) of which can be rotated to substantially prevent the gripping handle and / or the other intermediate piece coupled thereto. itself and the door from being opened by pulling the grip handle. 35 20 97413 7. Locking mechanism according to claim 1, characterized in that. the control mechanism (16) comprising - a rotatable member (38) rotating on a shaft (36), advantageously a rotatable disc-shaped member, with asymmetrical periphery, and said member having at least two radially leaking projecting projections (40). , 42), which form - a reading rule (40) which, when the locking mechanism is in the loaded position, protrudes from the door frame into a recess (44) or equivalent formed in the door frame or threshold (18) and 10. an indication rule (42) ), which when the locking mechanism is in the open position protrudes from the door frame and when the door is closed, hits the door frame or threshold (18) and rotates the rotatable member (38) so that the reading rule (40) projects out of the door frame. 15 8. Locking mechanism according to claim 1, characterized in that. the control mechanism comprises - a rotatable member (38) on a shaft (36), which has a reading rule (40) which, when the locking mechanism is in read position 20, protrudes from the door frame into a recess formed in the door frame or threshold (18) (44) or the corresponding, and - a slide (46) coupled to a shaft (48) formed in the rotatable member e.g. with a spring (50), and: - at least one pulling means (22) in the locking mechanism is coupled to the slide (46), for transferring the movement of the push handle or the grip handle to the rotatable means, for extracting the reading rule from the groove (44).