FI94658B - Push handle for opening the locking mechanism in a door - Google Patents

Description

94658

BUTTON TO OPEN THE DOOR LOCK MECHANISM

RELEASE FOR THE OPERATION OF THE SPRING MECHANISM IN THE END

The present invention relates to a button for opening a door latch mechanism, the latch mechanism comprising a latch mechanism mounted on the door body 5, e.g. the latch mechanism.

10 Fire-resistant external doors and other fire doors between different compartments are usually in two parts, in which case the door consists of two halves. The first half is often locked unlocked by a latch mechanism.

The second door half, which is freely openable, 15 is used as a passage door. Passage through the door can be prevented by a lock that is mounted on the opening door half. When the lock is set to the locked position, it locks the second or openable door half • · · {to the opposite or non-openable door half, 20 in which case neither door half can be opened without opening the lock.

• · · However, for emergency exits, it must be possible to open the doors from the inside. For this purpose, a handle or button is placed inside the first half of the door 25 locked by the latch mechanism: when turned / pressed, the locking bars of the latch mechanism move: and unlock the upper and lower frames of the door. In this case, 2 94658 this first door half and with it the entire door can be opened in an emergency, regardless of whether the lock of the second door half, i.e. the access door, is locked or in the open position. After the emergency exit 5, the fire door must be closed and re-locked to prevent the fire from spreading.

An attempt has been made to ensure the locking of the latch mechanism after the above-mentioned emergency exit situation. in automatically-locked doors using a sensor which, when the door is closed and hits the door frame, automatically releases the latch mechanism and locks the door. This solution causes problems in situations where there would be a need to temporarily keep the door closed but not locked.

On the other hand, it may sometimes also be necessary to lock the latch mechanism so that the door cannot be opened by simply twisting the handle or pressing a button.

It is an object of the present invention to provide a door '. the latch mechanism has a button which does not have the above-mentioned drawbacks. The invention is characterized by what is set forth in the claims below.

II

1 ·} The solution according to the invention has a lock fitted to the button: T: the bar of which can be pivoted, if desired, so as to prevent the movement of the button and • ·. locks the button and bar to the desired position.

. ‘This allows the button to be locked, for example, to the depressed ·’. position so that the button continuously holds the latch 3 94658 mechanism in the open position. On the other hand, the button can also be locked in the rest position so that the button cannot be pressed down and the latch mechanism can be opened. Of course, the lock can also be locked in a position where the button 5 is continuously actuated, i.e. in a position where the button can be used to open the latch mechanism and where the latch mechanism can be locked automatically.

According to a preferred embodiment of the invention, a bar mechanism is arranged in the upper 10 and / or lower part of the door, which is connected to the button via a pull rod.

When the door is opened, the button command, i.e. pressing to open the latch mechanism, is changed in the button to the pulling movement of the drawbar. The drawbar transmits the command of the button 15 as a pulling movement to the latch mechanism.

In fire door solutions in which a latch mechanism is fitted to both the upper and lower part of the door, the drawbars are preferably connected to the latch mechanisms in such a way that • · '. The opening of the latch mechanism 20 takes place centrally by pressing a button, but the closing of the latch mechanisms takes place independently of each other. The button is preferably fitted with a return spring which, after opening the latch mechanism, returns the button i ·: * ..! 25 and drawbars to the initial or rest position.

;

According to a preferred embodiment of the invention, the button comprises a body of the button, the actual pressure V; body, button cover and lock. The body of the button 30 is in the form of a partially open box • ·. comatose structure and is attached to the door frame, e.g., in the usual position of the door handle. An opening is formed in the surface of the door at the button so that the pull mechanism of the drawbars 4 94658 can protrude from the door body into the body of the button. The pressure member, i.e. the active part of the button, is fitted in the body of the button and a cover is arranged on the pressure member.

5

The lock is arranged in connection with the pressure member under the cover of the button and is attached to the pressure member and / or the cover, whereby the movements of the lock, the pressure member and the cover are interdependent. Thus, when the button 10 is pressed, all said parts move together towards the door frame. An opening is formed in the cover, from which the lock can be turned with a key if necessary.

15 When the button is in the rest position, the lock bar can be pushed and unlocked so that when the button is pressed, it immediately strikes the button body, the door frame or any other obstacle that prevents the button from being pressed all the way. In this case, the latch mechanism • cannot be opened with the button.

Accordingly, when the button is depressed, the lock bar can be pushed and locked out so that as the button tends to return to the rest position 25 it strikes the inside of the door body, the button body or i; : ...

• any other obstacle that prevents the button from moving to the rest position. The latch mechanism remains m · ·: in this case continuously in the open position.

• · t • $ * • m · ....: 3 0 The lock bar can preferably be pushed out in two different directions, the bar in one direction restricting the movement of the button and in the other allowing the movement of the button.

It 5 94658

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

Figure 1a schematically shows a latch mechanism; Fig. Ib schematically shows a button of a latch mechanism and an associated drawbar pull mechanism;

Fig. 2 shows in part a button according to Fig. 1 fitted with a lock which allows the 10 buttons to move freely;

Fig. 3 shows the button of Fig. 2 in a situation where the lock prevents the button from being pressed, and

Fig. 4 shows the button according to Fig. 2 in a situation where the lock prevents the button from returning to the rest position.

Figure 1a shows a latch mechanism with a button 10, a latch mechanism 11 and drawbars 12, 14.

Figure Ib shows a button 20 10 arranged on the surface of the door for moving the drawbars 12, 14 arranged inside the door body. The drawbars 12, 14 are functional. connected to the button by means of a pulling mechanism 16 which, when the button is pressed, produces ΙΓ. drawbars for traction. The traction mechanism 16 is formed by flat bars 18, 20 attached to the drawbars, and by a pivotable intermediate member 22 connecting the irons. The intermediate member is connected to the flat bars 18, 20 by shaft pins 24, «· ♦: V 26. Intermediate 22

• • I

A: the pivoting movement about the shaft 28 causes the movement 30 in the irons 18,20 and thus also in the drawbars 12,14.

• ·. The button 10 comprises a button body 30 which is box-shaped, partially open at the bottom and 6 94658 fixed to the door surface 32 so that a pulling mechanism 16 passing through an opening 34 in the door surface partially protrudes through the open bottom into the button body. A frame-shaped pressure member 36, i.e. the actual pressure part, is arranged in the body 30 of the button. The button is protected by a cover or cover 38.

The pressure member 36 is connected to the button body 30 by a shaft 40, partially pivotable about the shaft.

The shaft 40 is further provided with a return spring 42 which returns the button to the rest position when the press is completed. The pivotable intermediate member 22 of the traction mechanism 16 is connected to the button body 30 by a shaft 28, pivotable about an axis.

15

The intermediate member 22 of the traction mechanism 16 is connected to the pressure member 36 by a shaft 44, which limits the rotation of the pressure member about the shaft 40. The shaft 44 is fitted in elongate guide openings 46 formed in the pressure member.

··. ·. Figures 1a and 1b show a button 10 fitted to the door frame 48 in the rest position with the pressure member 36 and the button cover 38 in their outer position and the flat irons 18, 20 of the traction mechanism 16 in a wide branch. in a position where the drawbars 12, 14 are *. * * 30 protruding apart.

• · • · · (· When the button is pressed, the pressure member 36 moves towards the surface of the door by turning the intermediate member 22 clockwise 7 94658 about the axis 28. The intermediate member then pulls the flat bars 18, 20 and the drawbars 12, 14 towards each other, opening the latch mechanism. to the rest position of the pressure member, which also pa-5 rafts the intermediate member, flat irons and drawbars to the rest position.

The button shown in Figures 1a and Ib can advantageously be fitted with a lock which, if desired, prevents the button 10 from being pressed or the button from returning to the rest position. Fig. 2 schematically shows a button cover according to Fig. 1, inside which a lock 50 is arranged. The lock is preferably fixedly fixed to the lock cover and / or to the pressure member.

The lock 50 comprises a lock housing 52 and a bogie 54 projecting out of the lock. At the top of the lock there is a lock member 56 from which the lock bogie can be locked in different positions.

In the situation of Figure 2, the bar 54 of the lock 50 is directed towards the center of the opening 34 in the door surface, allowing the bar 54 to move freely without colliding with the button or the door frame when the button is pressed.

• «· · 25 i ·: * ..! Fig. 3 shows the button according to Fig. 1, i:: in which the lock bar 54 is turned 180 degrees compared to the previous one, i.e. so that the bar is oriented «· · towards the end 58 of the button body so that the bar • • * V: 30 54 partially protrudes button body base 60 and. : on the edge 62 of the opening formed in the door frame, ··· so that the lock cannot move freely in the opening 34.

When the button is pressed, the lock bar 54 immediately impinges on the bottom 60 of the button body and thus prevents the button from moving. The lock thus prevents the operation of the traction mechanism and the drawbars and the opening of the latch mechanism.

5

Fig. 4 shows the button according to Fig. 2 in the active phase, i.e. pressed towards the door surface. In the button, the lock bar 54 is rotated 180 degrees compared to the situation of Figure 1, i.e. so that the bar 10 is directed towards the end 58 of the button body, but so that the bar 54 protrudes partially below the bottom 60 of the button body and the edge 62 of the door frame. cannot return freely through the opening 34. As the button tends to return to the rest position by the force of the spring 42, the lock bar 54 immediately impinges on the door frame 48, which prevents the button from moving. The lock thus prevents the operation of the traction mechanism and the drawbars and the locking of the latch mechanism.

20

With the solution according to the invention, using the lock fitted to the button, the locking of the latch mechanism can be adjusted in different ways and in different situations to ensure the automatic operation of the latch mechanism, * /. · * 25 if desired to prevent locking or vice versa .

The invention is not intended to be limited to the above 30 embodiments but is intended to be applicable; in various embodiments within the scope of the inventive idea defined by the claims.

li

Claims (12)

94658 A button for opening the door latch mechanism, the latch mechanism comprising a latch mechanism (11) mounted on the door frame (32), e.g. at its upper and / or lower edge, which in the locked position locks the door on the door frame, - a button (10) on the latch mechanism (11) ), and - a rod (12, 14) which transmits the movement of the button 10 to the latch mechanism (11), in addition - the button (10) has a pressure member (36) and a cover (38) which move towards the door frame when the button is pressed, known that - a lock (50) is fitted to the movable part of the button (10), i.e. the pressure member 15 (36) and / or the cover (38), so that it moves towards the door frame when the button is pressed, and that - the lock bar ( 54) is pivotable so as to substantially prevent the movement of the button pressure member (36) 20 and lock the rod (12, 14) in the desired position! toon. Button according to Claim 1, characterized in that the • · · • V 25 rod is a drawbar (12, 14) which is connected: to the latch mechanism (11) so that - in the active position of the button (10), when the button is pressed, it holds the latch mechanism (11) in the open position; and. . ·. 30 - in the rest position of the button (10) allows the latch mechanism 'V. (11) free-moving open to locked position. Button according to Claim 2, characterized in that the button (10) is connected via a pulling mechanism (16) to two pulling rods (12, 14) which are operatively connected to the latch mechanism (11) in either the upper or lower part of the door. to open up. A button according to claim 1, characterized in that the button (10) comprises a button body 10 (30) and a shaft (40) pivotable pressure member (36) fitted to the button body, which transmits the push button movement to the drawbar (12) via a pull mechanism (16). , 14) and that a lock (50) is arranged on the button (10), the barrel (54) of which is pivotable so as to prevent the movement of the pressure member (36) by locking the drawbar (12, 14) in the desired position. A button according to claim 4, characterized in that the button comprises - a box-shaped button body (30) fixed to the door surface and having an opening (34) in the bottom through which the drawbar pull mechanism (16) partially protrudes into the body, and i: V 25 - a button cover (38) attached to the • · · pressure member (36) and substantially covering the button body (30) and the pressure member (36), and that the traction mechanism (16) comprises - a drawbar ( 12, 14) with flat iron (18, 20) and. . ·. Functionally connected with 30 bearing pins (24, 26) • · ’!! an intermediate member (22) operatively connected to the pressure member V (36) via the second bearing pin (28) such that depressing the pressure member causes traction on the drawbar via the intermediate member. Button according to Claim 4, characterized in that a lock (50) is arranged on the button (10), the bar (54) of which can be pivoted so as to prevent movement of the intermediate member (22), locking the drawbar (12, 14) in the desired position. . Button according to Claim 4, characterized in that - the pressure element (36) is connected at one end to the button body (30) by means of a shaft pin (40) and that a spring (42) is arranged in connection with the 15th shaft pin (40). ), which tries to return the button (10) to its initial position when the press is completed. Button according to Claim 4, characterized in. . 20 that; - the lock (50) is attached to the pressure member of the button · ;; (36) and / or the button cover (38) on the movable end of the «» · 'button. * «« «• · · • V 25 A button according to claim 4, characterized by: V: from. that an opening is formed in the button cover (38) at the member (56) of the lock (50) from which the lock can be opened or locked with a key. . , · 4 30 Button according to Claim 4, characterized in that the lock bar (54) can be pushed out *. . from the lock (50) and lockable in at least two different optional directions by twisting the lock key. • * »94658 Button according to Claim 10, characterized in that in the rest position of the button (10) the lock bar (54) can be pushed out of the lock so that the bar meets the bottom of the button body (30) or the door body (48) when the button is pressed. is prevented. Button according to Claim 10, characterized in that, when the button (10) is in the depressed position 10, the lock bar (54) can be pushed out of the lock so that the bar meets the door or button body (48, 30) when the push is completed and the button reaches the rest position. so that the button is prevented from returning to the rest position. 15 «• · · • · • 1 • · • ·« # «• · 1 • 1» • · · • «· • 1 II · t · 94658