SK8397Y1 - Lock for an interior door - Google Patents

Abstract

The lock (10) for interior door comprises, a bolt (16) and bolt tail (17), a hub (20) being rotatable by operation of a handle, a latch (13) and a latch tail (25) engageable with a door frame, being positioned between a horizontal axis (Y1) of the hub (20) and the bolt (16). According to the present invention said lock further comprises said lock (10) further comprises a lever (15) being pivotable around a lever hinge (24) for retracting the latch (13) having a first arm (50) connected with the latch (13), and a second arm (60) being moveable by a hub tab (32) when the handle is operated. In addition to that length (Z2) of the second arm (60) is equal or longer than length (Z1) of the first arm (50) which leads the retraction of the latch (13) to be obtained easily.

Description

The technical solution relates to a lock for interior rooms of houses, hotels, apartments and other types of buildings, and more specifically it relates to a lock which allows the latch to be easily retracted when reduced as a whole.

BACKGROUND OF THE INVENTION

Mortise locks for interior rooms of houses, hotels, apartments and other types of buildings generally include a latch operated by a handle on each side of the door and a latch controlled by a key or lock cylinder. The locks are seated in a recess at the edge of a door that includes latches or bolts that can be actuated (i.e., ejected or drawn in) into and out of / into the recesses formed in the pillar or door frame.

Generally, the latch, also referred to as the latch, of the mortise lock for interior rooms is placed at least partially higher than the lock nut. While moving the door handle when the user pushes it down, the direction of movement of the nut and latch is oriented in the same way. In the prior art, a single piece of material, such as a lever, can be used to pull a bolt by moving the nut. Similar types of locks used in interior rooms are advantageous not only for easy and quiet operation, but also for simple construction.

The latches and / or lock bolts used in locks are provided in a variety of sizes that have evolved as relative industry standards. More specifically, the handle and lock cylinder position assumes one of several relatively standard dimensions. When a lock of a similar type of smaller size is needed, the latch pulled by turning the handle must be used with its complicated parts. It is preferred that the length of the center of the lock handle be in a position commensurate with the measures of a standardized lock established over time. When the length of the center of the lock handle is kept proportionate to the standardized size of the lock of a smaller size, the lock latch must also be positioned lower than the nut and closer to the bolt.

In this case, the direction of pulling the latch must be oriented opposite to that of the lock nut. Therefore, when the size of the lock decreases by keeping the length of the handle center in a standardized ratio, a mechanism is required that pulls the latch easily into the lock body while avoiding additional costs. In addition, the position of the latch is required to vary according to the door where it is to be used. A more convenient way of changing the position of the latch also provides comfort to the user and the lock fitter. It is necessary to modify the lock to accommodate doors which open inwards or outwards, and in which not only the balls and the handle change their position, but it is necessary to maintain the connection between the handle and the latch in this inverted position.

The distance between the lock nut and the axis of rotation of the lock cylinder, referred to as the handle axis distance, is standardized over time in a particular country and also in a larger geographical area. The position of the lock parts must be in a mold to meet the standardized lock rates indicated. Lastly, in order to save time and cost, it is desirable to use mortise locks of a smaller size by reducing the area of the lock especially in the wooden doors produced.

In addition, the only object is that a lock having a smaller size at the same time saves certain materials, which can lead to a reduction in the cost of the lock. However, as the size of the lock decreases, the above standardized rates must be adhered to, which leads to the use of complicated pieces and increases the cost of the lock.

The general object of the present invention is to provide an improved lock of the described general type that satisfies the above requirements.

The main aim of the technical solution is to provide a lock which is reduced by using a lever for easy pulling of the latch while maintaining constant standardized measures of the lock.

Another object of the present invention is to provide a lock that reduces the pulling power of the Sagittarius

Another object of the present invention is to provide a lock that is easy to handle by the user when the latch can retract smoothly and does not exhibit any additional resistance in the system for optimal power transmission.

Another object of the present invention is to provide a lock that allows the use of the pieces to be smaller in size by optimally transmitting the lock force.

Another object of the present invention is to provide a lock that can be constructed more easily, without the use of complicated pieces, which leads to savings in the labor cost of the lock.

Another object of the present invention is to provide a lock having long-lasting pieces by using simple parts that are at least exposed to friction forces.

Another object of the present invention is to provide a lock having two label or rosette openings despite a smaller size.

S K 8397 Υί

Another object of the present invention is to provide a lock in which the position of the latch can be easily replaced.

Another object of the present invention is to provide a lock having a latch mechanism which includes improved mounting arrangements for the left or right side together with a simplified latch actuator.

The essence of the technical solution

These objectives have been achieved by this technical solution, which relates to a lock for use in an interior room of schools or residential buildings. Said interior door lock comprises a bolt and a rear end of the bolt, wherein the nut can be rotated by a handle control, a latch bolt and a latch rear end which can engage in the door frame, being positioned between the horizontal nut axis and the bolt. According to this technical solution, said lock further comprises a lever which is pivotable about a hinge of a lever for pulling a latch, having a first arm attached to the latch and the second arm can be moved by the nut tongue when the handle is actuated. In addition, the length of the second arm is equal to or greater than the length of the first arm, which makes the latch retracting easy.

According to a preferred embodiment, the first arm of the lever comprises a convex edge to allow an increase in the distance between the perpendicular axis of the point at which the nut tongue and the second arm are in contact with the hinges when the latch is retracted. Said latch and the rear end of the latch may be connected by a connecting means. According to a further preferred embodiment, the lock comprises a connection opening formed on the top cover to allow access to the connection means.

According to another preferred embodiment said lock comprises a latch case which is connected to the first lever arm.

The lock according to the present invention may comprise an adjusting spring that abuts and presses the lever.

The lock may further comprise a latch tongue to allow mounting in two different positions by obtaining a connection between the latch and the rear end of the latch. According to another embodiment, the lock may further comprise a plurality of plates, a second cylinder lock or a second nut to control the bolt, or may comprise a latch pin which is guided in the latch slot formed on the rear cover.

BRIEF DESCRIPTION OF THE DRAWINGS

The attached drawings are given solely for the purpose of providing an example of a lock whose advantages over the prior art have been outlined and briefly explained below. The drawings are not intended to limit the scope of the protection identified in the claims, nor should they be referred to by themselves in an attempt to interpret the scope identified in the claims without referring to the technical disclosure in the description of the present invention.

Figure 1a shows a top view of a lock where the bolts are operated according to the present invention.

Figure 1b shows a top view of the lock, according to the present invention, where the top cover is removed.

Figure 1c shows a perspective view of the lock, according to the present invention, where the cover is removed and the bolt retracted.

Figure 2a shows a top view of the lock, according to the present invention, where the cover is removed, the latch and bolt are retracted.

Figure 2b shows a perspective view of the lock, according to the present invention, where the latch and bolt are retracted.

Figure 2c is a perspective view of the lock shown in Figure 2b.

Figure 3a shows a top view of the lock, according to the present invention, where the cover is removed and the latch is in position immediately in front of the door which is in the closed position.

Figure 3d is a perspective view of the lock shown in Figure 3a.

Figure 4 shows a perspective view of the lock and a detailed view of the retracted latch according to the present invention.

Figures 5a to 5d are a series of perspective views illustrating the change of position of the latch bolt according to the present invention.

Figures 6a to 6d show four detailed views of the lock where the latch position changes according to the present invention.

Figure 7 shows two perspective views of a lock where the latch is appropriately operated and pulled according to the present invention.

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Figure 8a shows a partial top view of a lock where a nut contacts a lever according to the present invention.

Figure 8b shows a partial top view of the lock where the nut exerts a force on the lever such that the latch is retracted according to the present invention.

Figure 9a is a rear view of a lock according to the present invention.

Figure 9b is a rear view of the lock where the latch is retracted according to the present invention.

Figure 10a is a partial top view of a lock that is in the open state and where the applied forces are shown.

Figure 10b is a partial top view of the lock which is in the closed (retracted) state and where the applied forces are shown.

An exemplary embodiment

Referring now to the sketched figures, this technical solution proposes a lock for an interior door.

According to this technical solution, as shown in Figures 1a to 1c, said interior door lock 10 comprises a retractable and retractable bolt 16 and a rear end 17 of the bolt 16 that extends or retracts in response to the rotation of the key 18; nut 20 rotatable by crank control; the latch 13 and the rear end 25 of the latch 13 engaging the door frame, located between the horizontal axis Y1 of the nut 20 and the bolt 16. The lock further comprises a lever 15 that is pivotable about the hinge 24 of the latch 15 of the latch 13 having a first arm. 50 coupled to the latch bolt 13 and the second arm 60 movable by the tongue 32 of the nut 20 when the handle is actuated. In addition, the length Z2 of the second leg 60 is equal to or greater than the length Z1 of the first leg 50.

In the prior art, the latch, hereinafter referred to as the latch bolt 13, of the lock used in the interior door, is placed higher than the nut 20 and closer to the stern part of the lock that pulls into the main body 19 by moving the handle. Admittedly, it is desirable to produce a smaller-sized lock for interior doors, while maintaining a standardized ratio of lock rates.

According to this technical solution, as can be seen in Figure 1a, since the crank axis distance E is maintained appropriately with respect to standardized measures, said latch bolt 13 is positioned between the horizontal nut axis Y1 and the bolt 16. In other words, for the remaining crank axis distance E as a standard ratio, the latch bolt 13 must be positioned in reduced locks at a lower position than the nut 20. Therefore, the latch bolt 13 is positioned closer to the bolt 16, causing the use of a complicated part to draw the latch bolt 13 into the main body 19 of the latch 10 when the arm which is shorter and the arm pulling the latch 13 is longer than necessary to exert more force than the lever force acting on the latch 13. In this case, both the lever 15 and the hinge 24 of the lever 15 are subjected to an excessive load.

One object of the present invention is to provide a lock having a lever 15 pulling the latch 13 that pulls the latch 13 easily and simply, avoiding the need for its complicated parts as the lock size decreases. According to this technical solution, the lever 15, used as a tractor of the latch bolt 13, is preferably used in one piece. As can be seen in Figure 1, the lever 15 moves with the latch 13 and the rear end 25 of the latch 13 synchronously, and the handle control causes the nut 20 to rotate to pull the latch 13 into the main body 19. Referring to Figures 8a and 8b, the latch pulling lever 15 13 is V-shaped having two arms, a first arm 50 and a second arm 60 of different length. In a preferred embodiment, the length Z2 of the second arm 60 of the lever 15 is equal to or greater than the length Z1 of the first arm 50 of the lever 15. During the inward movement (pulling the latch), friction is formed and according to the invention such friction is reduced by a lever 15 has arms of two different sizes.

Referring again to Figures 8a and 8b, the first arm 50 of the lever 15 comprises a convex edge 80 that allows to increase the distance XI between the perpendicular axis of the point at which the tongue 32 of the nut 20 and the second arm 60 contact and the hinge 24 of the lever 15 when the latch 13 It draws. Said tongue 32 of the nut 20 is guided in the nut slot 40 of the nut 20 by a corresponding pin. A lock having a latch that can be relatively easily retracted when the arm constituting the torque arm is longer is obtained, since a balanced load distribution is obtained. Referring to Figure 3a, when the nut 20 is rotated by the crank movement, the second arm 60 of the lever 15 having a convex edge 80, s and moves by the tongue 32 of the nut 20, causing the pivoting movement of the lever 15.

The resulting force is the only force and associated torque obtained by combining a system of forces and torques acting on the rigid body. Referring to Figure 10a, the resulting force (RF) as a perpendicular vector occurs when the nut tab 32 contacts the convex edge 80 of the second arm 60. In Figure 10, the resulting force is shown with its force components as tangential force (TF - tangential force) and drag force (D). Said tangential force TF is a vector which serves to rotate the lever 15 about the axis of the hinge 24 and a traction force is a vector which has a direction toward the center of the hinge 24 and does not contribute to the rotation of the lever 15. In Fig. 10a the latch 13 is in the extended position and 10b is the latch bolt 13 in the retracted polo

S K 8397 ΥΙ he, where the scaled quantities are shown. When the latch 13 is brought into the retracted position, as shown in Figure 10b, from the extended position as shown in Fig. 1a, the tensile force of the radial force decreases and the tangential force increases, further helping to obtain an easily retractable latch 13. Further referring to 10a, the distance L1 between the latch housing 23 and the center of the hinge gradually decreases, and the distance L2 is shortened as shown in Fig. 10b, which helps to optimally transmit the force due to the different height of the lever arm 15. By concave edge 90 it acts at right angles, preventing the formation of rocky variables that create resistance to the system. Said housing 23 of the latch bolt 13 is connected to the first arm 50 of the lever 15.

Another advantage according to the invention, as mentioned, is to provide a lock reducing unnecessary resistance, as shown in Figures 10a and 10b, which helps not to expose the pin 70 of the latch 13 to guide the latch 13 in the latch slot 71 of the latch 13 on the housing. While operating the lock 10, the contact friction is not sufficient to prevent the side surface of the slot 71 and the latch bolt 13 from touching. The latch pin 70 is guided in the latch slot 71 formed on the back cover.

One end of the lever 15 is connected to the rear end 12 of the latch 13. The lever 15 is pressurized by the spring 21 of the nut 20 positioned higher than the nut 20 and is able to move the nut 20. The plate member is pressurized by the adjusting spring 22 keeping the lock 10 in locked condition with matching teeth. Said adjusting spring 22 acts as a plate spring and the other spring-engaging spring end helps to eject the latch bolt 13 while keeping the door closed. Therefore, only a spring is provided instead of two springs, which helps to reduce costs. The adjusting spring 22 abuts and presses on the lever 15. The main idea underlying this technical solution, as shown in Figure 1, is to ensure that the horizontal axis Y2 of the latch bolt 13 is in a lower position than the horizontal axis Y1 of the nut 20. to keep the lock 10 smaller in size while maintaining a standardized rate. Referring to Figure 1c, said bolt 16 and the rear end 17 of bolt 16 are manufactured in one piece by plastic injection molding so as not to limit the scope of the present invention, said pieces being capable of being used alone. The corresponding door handle is securely attached to the nut 20 as the nut 20 rotates; at the same time said lever 15 rotates synchronously about the hinge 24. When a rotation is obtained, said latch bolt 13, which is connected to the first arm of the lever 15, is drawn into the main body. When the user pushes the door to close the door, the latch bolt 13 is brought into position as shown in Figures 3a and 3b. In a later stage, the latch bolt 13 is ejected into a recess formed in the pillar but in the door frame.

Although this technical solution is related to a lock having a standard rear end of the bolt 16 controlled by a key 18, it will be obvious to a person skilled in the art that a different locking mechanism may be used to operate the bolt 16. As an example, a locking mechanism such as In addition, a WC lock can also be used with a nut suitable for WC locks. In addition, the lever 15 according to the present invention may vary in structure and construction. Essentially, the lever pivotable about the hinge axis 24 can be accomplished by rotating the nut 20 such that the height differences of the lever arm 15 help to easily retract or extend the bolt 16. The biasing of the adjusting spring 22 onto the lever 15 also applies to the plate 30 located below the lever 15.

Another feature of this invention is to provide a lock that can be mounted on doors of different types and sizes. An essential characteristic of this advantage is that said latch bolt 13 can be rotated 180 ° and therefore easy to mount. As can be seen in FIGS. 4 and 5, a latch tongue 28 having a guide opening 29 for the coupling means 27 is provided. Preferably, a bolt is used as said coupling means 27 and said guide opening 29 has a through hole which serves for this purpose. to secure the screw itself by trapping the plastic in the hole.

By means of the latch position change system 13, when the user wants to change the latch position 13, he can access the connecting means 27 from the circularly formed connection hole 72, as shown in Figures 5b and 4, to disconnect the connection between latch 13 and the rear end 25 of latch 13 Referring again to Figures 5c and 5d, when the latch bolt 13 is disengaged, said latch bolt 13 is rotated 180 °, and then the latch tongue 28 of the latch bolt 13 is fully inserted into the housing of the rear end 25 of the latch bolt 13. 13 and the guide opening 29 of the latch tongue 28 are aligned and the fastener 27 can pass through these openings.

Figures 6a and 6c show the position of the latch bolt 13 when fully retracted. In this case, the coupling element 27 is only partially visible in the upper setting of the coupling hole 72 of the top cover 26. In this case, the coupling means 27 is released spontaneously, even when the top cover 26 remains in place due to this obstruction. Figures 6b and 6d show the latch bolt 13 in preparation before changing position when it is compressed so that it can no longer go with the finger and a precise alignment of the fastener 27 on the top cover 26 around the fastener opening 72 of the clip is achieved. In this case, the connecting means 27 is preferably removed with a screwdriver or the like and a change in the position of the latch bolt 13 takes place.

A further advantage obtained by this technical solution is to provide a lock having a clamping screw used to screw the handles of the door handle which enters from one end to be able to construct a hole of the screw that allows to protrude from the other end. This characteristic is not found in most of these

With K 8397 Υ Υ of these small locks, according to the invention, it can be used in a different way which allows the door handle to be emblems and the door handle rose to be favored compared to others. It will be apparent to those skilled in the art that the slot apertures of the pin may be in the form of a circular or any polygonal shape.

The number of fasteners 27 and associated fasteners 72 of the top cover 26 may vary and may be more than one. In a different form of the present invention, the lock can be used for bathroom and toilet doors; in this case, there may be a second nut with a lock cylinder that is used to extend and draw the bolt.

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List of reference marks

lock

needle

lever

barrier

Barrier element

Key

Main body

walnut

Nut spring

Adjusting spring

Shooting case

Hinge lever

The rear end of the latch bolt

Upper cover

Fasteners

Tongue connecting tongue

Guide hole

plate

Nut tongue

Y1 Horizontal nut axis

Y2 Horizontal latch axis

Nut slit

First arm

Second arm Z1 Length of the first arm

Z2 Length of second arm

E Handle axial distance

Pin of needle

Latch bolt connecting hole

Convex edge

Concave edge

Claims (9)

An interior door lock (10) comprising: a main body (19); a bolt (16) and a rear bolt end (17); the nut (20) rotatable by operating the handle; a latch (13) with a rear end (25) of the latch engaging the door frame, located between the horizontal axis (Y1) of the nut (20) and the bolt (16), further comprising a lever (15) which is pivotable about a hinge (24) of a lever for pulling in a latch (13) having a first arm (50) coupled to the latch (13) and a second arm (60) movably arranged with a tongue (32) of the nut (20) is operated by a crank, and in that the length (Z2) of the second arm (60) is equal to or greater than the length (Z1) of the first arm (50). Lock (10) according to claim 1, characterized in that the first arm (50) of the lever (15) comprises a convex edge (80) to allow increasing the distance (XI) between the perpendicular axis of the point at which the nut tab (32). 20) and the second arm (60) are in contact with the hinge (24) of the lever (15) when the latch (13) is retracted. Lock (10) according to claim 1, characterized in that the latch (13) and the rear end (25) of the latch (13) are connected by a connecting means (27). Lock (10) according to claim 1, characterized in that it comprises a housing (23) of the latch bolt (13) which is connected to the first arm (50) of the lever (15). Lock (10) according to claim 1, characterized in that it comprises an adjusting spring (22) for engaging and pressing the lever (15). Lock (10) according to claim 3, characterized in that it comprises a connection opening (72) formed on the top cover (26) to allow access to the connection means (27). Lock (10) according to claim 1, characterized in that it comprises a tongue (28) of the latch bolt (13) for enabling mounting in two different positions by obtaining a connection between the latch bolt (13) and the rear end (25) of the latch bolt (13). The lock (10) of claim 1, further comprising a plurality of plates, a second cylinder lock or a second nut for controlling the bolt (16). Lock (10) according to claim 1, characterized in that the latch (13) comprises a slot (71) formed on the rear cover in which the pin (70) of the latch (13) is guided.