TWM543277U - Lock for an interior door - Google Patents

Abstract

The present invention relates to a lock for an interior room. Said 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 of the hub (Y1) 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 of the second arm (Z2) is equal or longer than length of the first arm (Z1) which leads the retraction of the latch to be obtained easily.

Description

Interior door lock

This creation is about interior locks for houses, restaurants, apartments, and other buildings, and in particular, locks that can easily retract Latch bolts when they are minimized as a single unit.

Indoor mortise or mortice locks for houses, restaurants, apartments, and other buildings typically include a latch that is operated by a handle from either side of the door, and a bolt that is operated by a key or cylinder lock. The lock is disposed in a recess in the edge of the door, and the lock includes a latch or bolt that can be pulled out or inserted (ie, pulled or retracted) and the lock formed in the groove of the door post or the door frame Hehe.

In general, the latch of an indoor mortice lock, also a latch bolt, is disposed at a hub that is at least partially higher than the lock. During the movement of the handle, when the user presses down, the direction of movement of the hinge and the latch is oriented in the same direction. As far as the current technology is concerned, a simple material, such as a lever, can be used to retract the bolt by the movement of the hub. Similar types of locks used indoors tend to provide not only simple and quiet operation, but also a simple structure.

The bolts and retaining bolts used in the locks are available in different sizes and have evolved into relevant industry standards. In particular, the position of the handle and cylinder lock is in one of many standard sizes. When a similar type of lock of a smaller size is required, the latch needs to be retracted by running the handle with its complicated parts. The center length of the handle of the lock tends to be in the proper position of the standard lock that is established on the fly. When the center length of the handle of the lock is properly maintained relative to the standardized measure of the smaller size lock, the latch of the lock is placed at a position that is lower than the hinge and at the same time closer to the bolt. In this case, the direction in which the latch is retracted needs to be opposite to the direction of the hub of the lock. Therefore, when the lock size is minimized by maintaining the center length value of the handle at a standard ratio, a mechanism that easily retracts the latch inside the lock body while reducing the extra cost is required. Furthermore, the position of the latch needs to be changed depending on the position in which the door is used. A more viable method of changing the position of the latch also provides simplicity to the user and the person installing the lock. There is a need to improve the lock to make it suitable for opening inward or outward and in which not only the handle and knob change its position, but also the connection between the handle and the latch in the changed position needs to be maintained.

The distance between the hinge of the lock and the axis of rotation of the cylinder lock, called the distance of the handle shaft, is standardized in time for a particular country and a larger geographic area. The position of the part of the lock must be in the form of a standard lock as described above. Recently, in order to save time and cost, it is desirable to use a smaller-sized mortice lock by reducing the area of the lock particularly when manufacturing a wooden door.

In addition, one of the purposes of the same size lock of a smaller size is to save the same material, and the cost of the lock can be reduced. However, when reducing the size of the lock, it is necessary to maintain a standardized estimate that will result in the use of complex parts and increase the cost of the lock.

The main purpose of this creation is to provide an improved lock of the above general type which satisfies the aforementioned needs.

The primary objective of the present invention is to provide a lock that is minimized by using a lever for easily retracting the latch while maintaining the standardized lock gauge constant.

Another object of the present invention is to provide a lock that reduces the force of operation to retract the latch.

Another object of the present invention is to provide a lock that allows for easy handling, wherein the latch can be smoothly retracted and is not exposed to any additional resistance in the system due to optimized force transmission.

Another object of the present invention is to provide a lock that allows the use of small sized parts by optimizing the force transfer of the lock.

Another object of the present invention is to provide a lock that is designed in a simple manner and that does not require the use of complex components, thereby saving labor costs for the lock.

Another object of the present invention is to provide a lock having a durable part by using a simple component that is exposed to resistance in a minimum ratio.

Another object of the present invention is to provide a lock, although in a smaller size, it has a hole for a door cover or a seat ring.

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

Another object of the present invention is to provide a lock having a latch mechanism that includes a modified mounting configuration for a left or right hand and a simplified latch retractor.

This creation is about the use of interior door locks in similar structures in schools or apartments. The indoor door lock includes a bolt, a bolt end, a hinge rotated by the operation of the handle, a latch engageable to the door frame, a latch and a latch tail between the horizontal shaft of the hinge and the bolt. According to the present invention, the lock further includes a lever that pivotally surrounds the lever shaft to retract the latch and has a first arm coupled to the latch and can be pivoted when the handle is in operation The second arm of the piece moves. In addition to this, the second arm length is equal to or greater than the first arm length, resulting in a simple retraction of the latch.

10‧‧‧Locks

13‧‧‧Latch

15‧‧‧Control lever

16‧‧‧Bolts

17‧‧‧ bolt end

18‧‧‧ key

19‧‧‧ Subject

20‧‧‧ hub

21‧‧‧ pivot spring

22‧‧‧ Spring

23‧‧‧Latching seat

24‧‧‧ shaft

25‧‧‧Latch end

26‧‧‧Top cover

27‧‧‧Connecting tools

28‧‧‧Latch attachment tabs

29‧‧‧ Guide hole

30‧‧‧ tablet

32‧‧‧ pivotal ears

Y1‧‧‧ pivot horizontal axis

Y2‧‧‧Latch horizontal axis

40‧‧‧ pivot slot

50‧‧‧First arm

60‧‧‧second arm

Z1‧‧‧First arm length

Z2‧‧‧Second arm length

E‧‧‧Handle shaft distance

70‧‧‧Latch bolt

71‧‧‧Latch slot

72‧‧‧Link tool hole

80‧‧‧ protruding edge

90‧‧‧ concave edge

X1, X2‧‧‧ distance

The drawings are only for the purpose of exemplifying that the lock of the present invention has the above-described advantages as compared with the prior art, and it will be briefly explained later. The drawings are not intended to limit the scope of the invention as claimed, and are not to be construed as a limitation of the scope of the invention.

Figure 1a is a top plan view of a lock driven by a bolt according to the present invention.

Figure 1b is a top plan view of the lock removed according to the present invention.

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

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

Figure 2b is a perspective view of the lock with the latch and bolt retracted according to the present invention.

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

Figure 3a is a perspective view of the lock in a closed position in accordance with the present invention in which the cover is removed and the latch is just in front of the door.

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

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

Figures 5(a) to 5(d) are a series of perspective views showing changes in the position of the latch according to the present invention.

Fig. 6(a) to Fig. 6(d) show four detailed views of the lock in which the position of the latch according to the present invention is changed.

Figure 7 is a perspective view showing the locks correspondingly driven and retracted according to the present invention.

Figure 8a is a partial top plan view of the lock of the pivotal contact lever according to the present creation.

Figure 8b is a partial top plan view showing the lock applied to the lever to retract the latch in accordance with the hub of the present invention.

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

Figure 9b is a rear elevational view of the lock with the latch of the present invention being retracted.

Figure 10a shows the lock in the open state and shows a partial top view of the force applied.

Figure 10b shows the lock in the closed (retracted) state and shows a partial top view of the applied force.

According to the present invention, as shown in Figures 1a to 1c, the indoor door lock (10) includes an extendable/retractable bolt (16) and a bolt extending or retracted in response to the rotation of the key (18). a tail end (17); a pivot (20) rotatable by operation of the handle; a latch (13) and a latch engaged with the door frame and located between the horizontal axis (Y1) of the hinge and the bolt (16) Tail end (25). The lock further includes a lever (15) pivotally surrounding the lever shaft (24) to retract the latch (13), having a first arm (50) coupled to the latch (13), and When the handle is in operation, the second arm (60) can be moved by the pivot tab (32). In addition to this, the second arm length (Z ₂ ) is equal to or greater than the first arm length (Z ₁ ).

In the prior art, a latch bolt for a lock in an interior door, hereinafter referred to as a latch, is placed at a position higher than the hub and closer to the upper portion of the lock, which is retracted to the body via the movement of the handle (19) Internal. It encounters difficulties when it is desired to manufacture smaller sized interior door locks while maintaining the standard sizing ratio of the locks. According to the present creation, as depicted in Figure 1a, the latch is located between the pivot horizontal axis (Y1) and the bolt (16) because the handle shaft distance (E) is suitably maintained relative to the standard estimate. In other words, in order to maintain the handle shaft distance (E) at a standard ratio, in a minimized lock, the latch must be placed at a lower pivot position. Thus, the latch of the lock (10) is placed close to the bolt, causing the use of complex parts to receive the latch into the body (19) of the lock (10). When applying a shorter arm (and relative to each other) and a longer latching arm, it is necessary to apply a force greater than the force of the lever exposed to the latch. In this situation, the hinges of the control lever and the control lever are exposed to excessive load.

One object of the present invention is to provide a lock with a latching lever to easily retract the latch and in a simple manner to avoid the need for complex parts when the size of the lock is minimized. According to the present invention, the lever used as the latch puller is preferably used as a piece. As shown in Fig. 1, the lever (15) moves in synchronism with the latch (13) and the latch tail (25), and the operation of the handle causes the pivotal movement of the hub, and then the latch is retracted to Inside the main body (19). Referring to Figures 8a and 8b, the lever (15) for retracting the latch (13) is molded into two arms of different lengths, "V" of the first arm (50) and the second arm (60) "Type form. In a preferred embodiment of the present invention, the second arm (Z ₂ ) of the lever (15) has a length equal to or greater than the first arm length (Z ₁ ) of the lever (15). Resistance is created when moving inward (retracting the latch), and according to the present creation such resistance is reduced by having two differently sized arm levers.

Referring again to Figures 8a and 8b, the first arm (50) of the lever (15) includes a raised edge (80) that protrudes when the latch (13) is retracted by the edge (80). The distance (X ₁ ) between the vertical axis of the contact point of the second arm (60) and the control shaft (24) increases. The hinge lugs (32) are introduced into the hub slot (40) via corresponding pins. When the arm forms a longer moment arm, an average load distribution is obtained, thereby providing a lock that can relatively easily retract the latch. Referring to Figure 3a, when the pivot is pivoted by the movement of the handle, the second arm (60) of the lever having the raised edge (80) is moved by the pivot tab (32), which causes the lever (15) to pivot Move to move. The resultant force is a single force and an associated torque obtained by a system that combines the moments and forces acting on the rigid body. Referring to Figure 10a, the resultant force (RF) is the vertical vector produced by the pivot tab (32) in contact with the convex edge of the second arm (60). In Fig. 10, the resultant force RF is shown together with its component force, such as tangential force (TF) and drag force (D). The tangential force TF is a vector for rotating the control rod (15) about the axis of the rotating shaft (24), and the pulling force D is a vector having a direction toward the center of the rotating shaft (24) and having no contribution to the rotation of the control lever (15). . In Figure 10a, the latch is in the extended position, and in Figure 10b, the latch is in the retracted position, which shows the scalar quantities. When the latch is brought from the extended position shown in Fig. 10a to the retracted position shown in Fig. 10b, the pulling force of the radial force is reduced and the tangential force is increased, which in turn helps to achieve a simple retractable latch. . Furthermore, referring to Fig. 10a, the distance (L1) between the latch seat (23) and the center of the center of the shaft is gradually reduced, and as shown in Fig. 10b, the distance (L2) becomes shorter because of the control The different heights of the rods (15) help to optimize the transmission of forces. By means of the concave edge (90) of the first arm (50), most of the force is applied to the right corner, which avoids a scalar amount of resistance to the system. The latch seat (23) is in communication with the first arm (50) of the lever (15).

According to another advantage of the present invention, as previously described, a lock is provided which reduces the undesired resistance as shown in Figures 10a and 10b, which helps to prevent the guide latch (15) from entering the cover. The latch bolt of the upper latch slot (71) is exposed to excessive load. During operation of the lock, the lock does not have sufficient resistance to the lever to prevent it from touching the sides of the slot and the latch. The latch bolt (70) is guided to a latch groove (71) formed on the back cover.

One end of the lever (15) is attached to the latch tail (12). The lever (15) is placed under the pressure of a pivot spring (21) that is higher than the hub and is movable via the hub. The plate member maintains the lock in a locked state in conformity with the corresponding tooth member under the pressure of a set of springs (22). The set of springs acts as a flat spring and the other end of the spring that contacts the spring helps to extend the latch to maintain the door in a locked condition. Therefore, providing only one spring instead of two springs helps to reduce costs. The set of springs (22) supports and presses the lever (15).

The main idea under this creation is shown in Figure 1, where the horizontal axis of the latch (Y2) is provided at a lower position than the horizontal axis (Y1) of the hub. Therefore, a lock of a smaller size while maintaining a standard gauge is provided. Referring to Fig. 1c, the bolt (16) and the bolt end (17) are manufactured by injection molding of plastic, and are not limited to the scope of the present invention, and the components may be used separately. When the hub (20) is rotated, the corresponding door handle is securely attached to the hub (20); at the same time, the lever (15) is pivoted synchronously about the axis of rotation. When the rotation is achieved, the latch attached to the first arm of the lever (15) is retracted to the body. When the user pushes the door to close the door, the latch is brought to the position shown in Figures 3a and 3b. In the next stage, the latch is pulled out to the groove formed in the door post or door frame.

Even though this creation is related to a lock with a standard lock tail that is activated by a key (18), it will be apparent to those of ordinary skill in the art that different lock mechanisms can be used to activate the bolt. For example, the lock mechanism can be used as a cylinder or a two-position key lock. In addition, locks suitable for use in toilets can also be used with hubs suitable for toilet type locks. Furthermore, the control lever (15) according to the present creation can be varied in structure and design. Basically, the lever (15) that is rotatable about the axis of the shaft (24) is affected by the rotation of the hub, resulting in a difference in height of the lever arm that facilitates easy retraction and extension of the bolt. The set of springs that bias the lever is also used in the plate (30) placed under the lever (15).

Another aspect of the creation is the provision of locks that can be mounted on different types and sizes of doors. An important feature of this advantage is that the latch can be rotated 180 degrees and is therefore easy to install. Thus, as depicted in Figures 4 and 5, it provides a latch attachment tab (28) with a guide hole (29) as a connection tool (27). The connecting tool (27) is preferably used as a screw, and the guiding hole (29) is provided for the screw to clamp the plastic in the opening to fix its own through hole.

Via the position change system of the latch (13), when the user wants to change the position of the latch, the connection tool (27) can be reached from the circle forming the connection tool hole (72), as shown in Fig. 4. And shown in Figure 5(b) to unlock the connection between the latch and the end of the latch. Referring again to Figures 5(c) and 5(d), when the latch is disengaged, the latch (13) is rotated 180 degrees and then the latch attachment tab (28) is completely Insert into the seat on the end of the latch (25). Thus, the holes formed in the latch tail (25) are aligned with the guide holes (29) of the latch attachment tabs (28) and the connecting tool traverses them.

Figures 6(a) and 6(c) show the position where the latch is fully retracted. In this case, the joining tool (27) in the joining tool hole (72) of the top cover (26) disposed above is seen to be only partially penetrated. In this case, the attachment tool (27) is naturally released even if the top surface is maintained in a position to hinder it. Figures 6(b) and 6(d) show the latch (13) prepared before the finger is pressed to the position where it is now available, and further tightened on the top cover (26) The connection tool (27) associated with the tool hole (72) achieves precise alignment. In this case, it is preferred to remove the appropriate attachment means (27) with a screwdriver or the like and to change the position of the latch.

Another advantage of this creation is to provide a lock having a puller screw for screwing the handle knobs from one end and designing the screw holes to exit the other end. This feature does not exist in most small-size locks. According to this creation, it can be used in different ways, allowing door handles to door handles/seats on the door to make it superior to other products. Correct It will be apparent to those of ordinary skill in the art that the socket groove can be in the form of a circle or any polygon.

The number of attachment means (27) and associated upper cover connection tool holes (72) may vary and may be more than one. In various embodiments of the present invention, the lock can be used in the bathroom and toilet doors; in this case, there can be a second hinge and cylinder lock that is used to extend or retract the bolt.

10‧‧‧Locks

13‧‧‧Latch

16‧‧‧Bolts

17‧‧‧ bolt end

20‧‧‧ hub

21‧‧‧ pivot spring

22‧‧‧ Spring

25‧‧‧Latch end

50‧‧‧First arm

60‧‧‧second arm

Claims (9)

An indoor door lock (10) comprising: a main body (19); a bolt (16) and a bolt tail end (17); a hinge (20) rotatable by operation of a handle; a latch ( 13) having a latch tail end (25) engageable with the door frame between the pivot horizontal axis (Y1) and the bolt (16), wherein the lock (10) further includes a lever (15) The lever (15) pivotally surrounds a lever rotation shaft (24) to retract the latch (13) and has a first arm (50) and a second arm coupled to the latch (13) (60), when the handle is in operation, a pivoting lug (32) moves the second arm (60), wherein the second arm length (Z ₂ ) is equal to or greater than the first arm length (Z ₁ ). The lock (10) of claim 1, wherein the first arm (50) of the lever (15) includes a protruding edge (80) that causes the latch (13) to retract, The distance (X ₁ ) between the vertical axis of the contact point of the hinge tab (32) and the second arm (60) and the lever rotation axis (24) increases. The lock (10) of claim 1, wherein the latch (13) and the latch tail (25) are coupled to a connecting tool (27). The lock (10) of claim 1, wherein the lock (10) comprises a latch seat (23), the first arm of the lever (15) ( 50) Unicom. The lock (10) of claim 1, wherein the lock (10) includes a set of springs (22) that support and press the lever (15). The lock (10) of claim 3, wherein the lock (10) includes a coupling hole (72) formed on an upper cover that allows access to the attachment tool (27). The lock (10) of claim 1, wherein the lock (10) comprises a latch attachment tab (28) by obtaining the latch (13) and the latch tail (25) A link between them to allow installation in two different locations. The lock (10) of claim 1, wherein the lock (10) further comprises a plurality of flat plates, a second cylindrical lock or a second hinge to activate the bolts (16). The lock (10) of claim 1, wherein the lock (10) comprises a latch bolt (70), and the latch bolt (70) is introduced into a latching groove formed on the back cover ( 71) Medium.