FIELD OF DISCLOSURE
The present disclosure relates to a shutter module for cylinder lock for vehicles. More specifically, the said disclosure relates to mechanism and operation of shutter in a cylinder lock in vehicles which is related to opening of the shutter by magnetic key and closing the shutter manually by the user.
BACKGROUND OF THE DISCLOSURE
Generally, most of the vehicles are provided with cylinder locks. Such locks are being opened by insertion of key in the provided key hole (i.e. ignition lock). For example, ignition lock of a vehicle is provided with a shutter to prevent from unauthorized access to lock. In case of two or three wheelers vehicles and open roof four-wheeler vehicles, when key is removed from the lock, the lock is open to environment which may cause many problems such as miscreants/thieves may insert any sharp metallic object to unlock the cylinder lock. Further as the lock is completely open to environment, therefore, dirt, water or other foreign particles etc. may damage the lock or may even jam the said lock. Eventually, such conditions cause the reduction in the life of lock.
However, to overcome these shortcomings, various solutions have been provided such as to cover the cylinder lock with the help of a shutter. There are solutions which provide shutter to protect the cylinder lock with a mechanism, however, having many parts in such mechanism results in a complex assembling of such part.
In respect of operation of shutter, it has been found that a shutter is provided to cover the key hole at closed position and open the keyhole at opened position by user with a magnet key. The use of magnet key for closing and opening of cylinder lock key hole does provide an inconvenience due to manual operation of key insertion again.
Also, there are few solutions whereby closing of cylinder lock protection device is governed by a switch which needs to press by the user and second operation require manual interface.
3
In other words, the researchers have developed a user friendly and technically advanced shutter module for cylinder lock in vehicles. More specifically a cylinder lock whereby the shutter mechanism of cylinder lock is capable of facilitating the automatic opening by magnetic key along with option of manual closing of shutter.
OBJECTIVES OF THE DISCLOSURE
The primary objective of the present disclosure is to provide a shutter module for cylinder lock, which is related to opening of the shutter by magnetic key and closing the shutter manually by the user. The secondary objective of the present disclosure is to provide a shutter module which is user friendly.
SUMMARY OF THE DISCLOSURE
Accordingly, the present disclosure relates to a shutter module for cylinder lock provided with a shutter mechanism operated by a key. The said module comprises a cover mounted on a case. The cover consists of a top surface and a rear surface wherein the rear surface is provided with plurality of slots for accommodating a plurality of spring loaded magnets. The top surface of the cover consists of a key insertion hole which is aligned with a key hole of the case. A cylinder shutter lock is provided with a cavity on the top to insert the magnet key in the predetermined position. The said cylinder shutter lock is resiliently mounted in a cavity of the case having a plurality of depressions formed on an outer surface for receiving the plurality of spring loaded magnets thereby restricting vertical movement of the cylinder shutter lock. A shutter is resiliently pivoted on the case to cover the key hole in the case; the said shutter is having a top face, a bottom face and a shutter knob. A lever is pivotably mounted on the case via a lever pin, the said lever consisting a first end and a second end wherein the first end is operationally engageable with the shutter and the second end is engaged with a lever spring.
In an embodiment of the present disclosure, the case has an extruded pin provided for pivotable mounting of the shutter.
4
In an embodiment of the present disclosure, a slot is provided in the case to operationally move the shutter and a guiding hole to move the cylinder shutter lock.
In another embodiment of the present disclosure, the cylinder shutter lock has a cylindrical projection that is resiliently inserted in the cavity of the case and guided through the guiding hole.
In another embodiment of the present disclosure, the cylinder shutter lock is operationally engageable with the second end of the lever via a protrusion.
In a further more embodiment of the present disclosure, the shutter has an irregular profile and being engaged with the lever in closed condition.
In a further more embodiment of the present disclosure, the top surface of the shutter is provided with a face for resting the lever.
In another embodiment of the present disclosure, the bottom surface of the shutter is provided with a first undercut.
In another embodiment of the present disclosure, the extruded pin is provided with a torsion spring having a first end secured to the first undercut of shutter in bottom side and a second end secured to the case.
In a further embodiment of the present disclosure, the lever is pivotably mounted in a rectangular cavity formed in the case.
In a further embodiment of the present disclosure, the cylinder shutter lock is provided with at least one projected collar on the outer periphery that falls on the surface of a retaining plate at locked condition.
In a further embodiment of the present disclosure, the cylinder shutter lock is provided with a protrusion that engageable with the lever which is pivoted by a lever pin inserted through the case.
BRIEF DESCRIPTION OF FIGURES
Further aspects and advantages of the present disclosure will be readily understood from the following detailed description with reference to the accompanying figures. The figures together with a detailed description below, are in corporation and form part of
5
the specification, and serve to further illustrate the embodiments and explain various principles and advantages, in accordance with the present disclosure wherein:
Figure 1 illustrates an exploded view of the shutter module for cylinder lock in vehicles according to an embodiment of the present disclosure.
Figure 2 illustrates a sectional view of the shutter module in closed condition for cylinder lock according to an embodiment of the present disclosure.
Figure 3 illustrates a top sectional view of the shutter module in closed condition for cylinder lock according to an embodiment of the present disclosure.
Figure 4a illustrates a sectional view of the shutter module in an open condition in which the distal end of the magnet key is inserted in the cylinder shutter lock and pressed to open the shutter for cylinder lock according to an embodiment of the present disclosure.
Figure 4b illustrates a sectional view of the shutter module in an open condition according to an embodiment of the present disclosure.
Figure 5 illustrates a top sectional view of the shutter module in open condition in which the distal end of the magnet key is inserted resulting repulsion of the spring loaded magnets in the cover and disengaged the cylinder shutter lock according to an embodiment of the present disclosure.
Figure 6 illustrates a perspective view of the case of the shutter module according to an embodiment of the present disclosure.
Figure 7 illustrates a perspective view of the shutter of the shutter module according to an embodiment of the present disclosure.
Figure 8a-8b illustrates a perspective view of the cylinder shutter lock of the shutter module according to an embodiment of the present disclosure.
Figure 9 illustrates a perspective view of the cover of the shutter module according to an embodiment of the present disclosure.
Figure 10 illustrates a perspective view of the shutter module for cylinder lock in vehicles according to an embodiment of the present disclosure.
6
Skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to help to improve understanding of embodiments of the present disclosure.
DETAIL DESCRIPTION OF DISCLOSURE
While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the figures and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the disclosure as defined by the appended claims.
Before describing in detail embodiments it may be observed that the novelty and inventive step that are in accordance with the present disclosure resides shutter module for cylinder lock for vehicles. It is to be noted that a person skilled in the art can be motivated from the present disclosure and modify the various constructions of assembly, which are varying from vehicle to vehicle. However, such modification should be construed within the scope and spirit of the disclosure. Accordingly, the drawings are showing only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such setup or device. In other words, one or more elements in a system or apparatus proceeded by “comprises…a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
Accordingly, the present disclosure relates to a shutter module for cylinder lock being used in vehicles. Reference will now be made to the exemplary embodiments of the
7
disclosure, as illustrated in the accompanying drawings. Where ever possible same numerals will be used to refer to the same or like parts.
The shutter module assembly comprises of two main parts i.e. a case (3) and a cover (4). The cover (4) is mounted on the case (3) with at least two mounting screws (15) such that the key insertion hole (3b) of the case (3) is coaxial with the key hole (4f) of the cover (4).
Referring to Figure 1, the shutter module for cylinder lock comprises of a key (1), case (3), cover (4), cylinder shutter lock (5), shutter (6), retaining plate (7), torsion spring (8), lever (9), lever pin (10), lever spring (11), cylinder shutter lock spring (12), a plurality spring loaded magnets (13a, 13b, 13c) with springs (14a,14b,14c) for magnets and mounting screws (15).
As shown in Figure 1, the key (1) comprises of two ends i.e. a proximal end (1a) and a distal end (1b). The proximal end (1a) of the key is the mechanical unit which is used to start the vehicle whereas the distal end (1b) of the key is having a magnetic unit provided with a plurality of magnets (2a,2b,2c). The magnetic unit comprises one or more horizontally placed magnets in pre-identified slots. The term “horizontally” refers that the axis of the magnets are in plane with the distal end (1b) face of the magnet key (1). The slots of the magnetic unit may be provided at equidistance or at variable distance. The axis of the magnets (2a, 2b, 2c) is aligned transversely to the distal end (1b) face of the magnet key axis.
As shown in Figure 1 and Figure 6, the case (3) comprises of a slot (3f) wherein an extruded pin (3d) is provided through which the shutter (6) is pivoted. The slot (3f) is provided to accommodate the pre-loaded torsion spring (8). A cavity (3a) is provided to resiliently secure the cylinder shutter lock (5) in the case (3). The cavity (3a) consists of a guiding hole (3h) to guide the cylinder shutter lock (5) movement. The cavity (3a) of the case (3) further has a rectangular cavity (3c) in a direction of the slot (3f) to the cavity (3a) to accommodate the lever (9) with the lever spring (11). The said cavity (3a) has a vertically extruded pin (3e) to support the lever spring (11). The said rectangular cavity (3c) is also provided with a hole (3k) on a side wall of the rectangular cavity (3c)
8
to insert the lever pin (10). The case (3) comprises at least two holes (3i, 3j) to mount the case (3) with the cover (4) through the mounting screws (15). The case (3) comprises the key insertion hole (3b) which is axially aligned with the key insertion hole of cylinder lock and the key hole (4f) of the cover (4). On a side wall of the said cavity (3a), a stepped wall (3l) is provided to facilitate the stopping walls for the cylinder shutter lock (5) during push operation. The stepped wall (3l) restricts the axial movement of the cylinder shutter (5) beyond the predetermined limit.
Referring to Figure 2, the lever (9) is pivotably mounted in the rectangular cavity (3c) formed in the case (3) by a lever pin (10). The lever (9) consists of a first end (9a) and a second end (9b) wherein the first end (9a) of the lever (9) is operationally engageable with the shutter (6) and the second end (9b) of the lever (9) is operationally engageable with the lever spring (11) supported on the extruded pin (3e) of the case (3). The first end of the lever (9a) is disposed in the shutter and restricts the movement of the shutter at closed condition. The second end (9b) of the lever (9) comprises of a top surface which is operationally engaged with the cylinder shutter lock protrusion (5e) and allows the rotation of lever about the axis of pin (10) during push of cylinder shutter lock (5). Whereas a bottom surface of the second end (9b) of the lever (9) is engaged with the spring (11) which energizes when the lever is rotated by cylinder shutter lock by push and allows the lever to return back to its neutral position.
The shutter (6) is pivotably mounted on the case (3) via extruded pin (3d) formed on the case (3) and sandwiched between the case (3) and cover (4) in assembly. The shutter (6) consists of a top face (6a), a bottom face (6b) and a shutter knob (6e). The bottom surface (6b) of the shutter (6) is provided with a first undercut (6c) for securing one leg of the torsion spring (8) and other end of the torsion spring is secured in the case (3) which always energizes the shutter to move the shutter to open condition. The top surface (6a) of the shutter (6) provided with a circular face (6f) which is aligned with the key-hole axis (3b) at closed position hence to cover the key hole. The top surface (6a) of the shutter (6) is provided with a face (6d) for resting of the first end of lever (9a) at closed condition. The top surface (6a) of the shutter (6) is also provided with a face (6g) for resting of the first end of lever (9a) at opened position of the shutter. The shutter knob (6e) is an integral part of the shutter for achieving manual closing as shown in Figure 7.
9
The torsion spring (8) is placed around the extruded pin (3d). The torsion spring comprises of a first end (8a) and a second end (8b) wherein the first end (8a) of the torsion spring (8) is secured to the first undercut (6c) in the shutter (6) and the second end of the torsion spring (8) is secured to the case slot (3f) which energizes the shutter (6) to move in open direction about the axis of pin (3d).
The cylinder shutter lock (5) consists of a plurality of depressions (5b, 5c, 5d, 5g) on its outer surface for operationally accommodating spring loaded magnets (13a, 13b, 13c). The cylinder shutter lock also comprises a cavity (5a) which is provided for the insertion of the distal end (1b) of the key (1) for operating the shutter mechanism. The plurality of depressions (5b, 5c, 5d, 5g) are formed at equidistance or variable distance on the outer surface of the cylinder shutter lock (5) and aligned with the axis of the slots in the cover (4a, 4b, 4c, 4d) respectively thereby aligning themselves with the magnets (2a, 2b, 2c, 2d) axes. With the insertion of the key the axes of the magnets (2a, 2b, 2c, 2d) in the distal end (1b) of the key are aligned with the axes of the spring loaded magnets (13a, 13b, 13c) in the cover (4).
As shown in Figure 8a-8b, the cylinder shutter lock (5) has a cylindrical projection (5f) extending vertically downward which is resiliently inserted with the spring (12) in the cavity (3a) of the case (3) which tends to move up the cylinder shutter lock as the push force is released and guided through the guiding hole (3h). The cylinder shutter lock (5) is engageable with the top face of the second end (9b) of the lever (9) via a protrusion (5e) formed on the cylinder shutter lock (5). The cylinder shutter lock is provided with the cavity (5a) for the insertion of the magnet key (the distal end (1b) of the key) and pushed to rotate the lever (9) about an axis of a pin (10). The axis of the cylinder shutter lock is in alignment with the axis of the hole (4e) in the cover which guides the cylinder shutter lock (5) to move during operation. An O-ring (16) is disposed in the groove (5i) which is formed on the outer face of the cylinder shutter lock (5). The O-ring (16) is sandwiched between the cylinder shutter lock (5) and an inside face of the hole (4e) in the cover (4). The cylinder shutter lock (5) is provided with at least one projected collar (5h) on the outer face which falls on the surface of the retaining plate (7) at locked condition. The cylinder shutter lock (5) is provided with at least one water drain slot (5j) in bottom face of the cavity (5a).
10
Referring to Figure 1 and Figure 9, the cover (4) consists of a top surface and a rear surface wherein the rear surface of the cover (4) has slots (4a, 4b, 4c, 4d) provided at equidistance or variable distance which are in radially outward direction to the axis of hole (4e) in cover (4) and are in plane with the rear surface of the cover (4). These slots (4a, 4b, 4c, 4d) are open at the rear surface of the cover (4). The cover (4) is provided with two holes, where the first hole (4e) is for cylinder shutter lock (5) and the second hole (4f) is for insertion of proximal end (1a) of the key (1). The cover (4) also has a plurality of threaded holes (4g) on the rear side for fixing retaining plate (7) which provides support to spring loaded magnets (13a, 13b, 13c) in upward direction. The said spring loaded magnets (13a, 13b, 13c) are initially, partially inserted in these slots (4a, 4b, 4c) and operationally engageable with depressions (5b, 5c, 5d) on the outer surface of the cylinder shutter lock (5). The cover (4) has a provision for accommodating the shutter knob (6e) that can be operated manually. The cover (4) is provided with at least two threaded holes (4h) that are aligned with the holes (3i,3j) in the case (3) during assembly and allow the mounting screws (15) to mount the case (3) with the cover (4).
Figure 2 and Figure 3 depict the sectional view of the present mechanism whereby the shutter (6) is in closed condition. Referring to Figure 2 and Figure 3, when the shutter (6) is in closed condition, the cylinder shutter lock (5) is being disposed in the cavity (3a) of the case (3) with the spring (12) which is in decompressed state and is guided in the cylindrical projection (5f) in the cylinder shutter lock (5). The cylinder shutter lock (5) stops by the retainer plate (7) as the projected collar (5h) falls on the surface of the retaining plate (7) due to spring force of spring (12). The lever (9) is pivoted about lever pin (10). The first end (9a) of the lever (9) is engaged with the shutter (6) at the shutter face (6d) to lock the shutter (6) at closed position as the shutter (6) is resiliently engaged with a torsion spring (8) which tends to move the shutter to open position. The second end (9b) of the lever (9) is engaged with the lever spring (11). The spring loaded magnets (13a, 13b, 13c) are inserted partially in cover (4) and partially in cylinder shutter lock depressions (5b,5c,5d) respectively. The spring loaded magnets (13a,13b,13c) are retained in the cover (4) by the retaining plate (7) as the retaining plate (7) covers the spring loaded magnets in the cover (4). The lever (9) is resting on the face (6d) of the shutter (6).
11
Figure 4a-4b and Figure 5 depict the sectional view of the present mechanism whereby when the shutter is in open condition. As shown in Figure 4a and Figure 5, after insertion of the distal end (1b) of the key (1), spring loaded magnets (13a, 13b, 13c) are repelled and cylinder shutter lock (5) is pushed downward which in turn pushes the second end (9b) of the lever (9) using its protrusion (5e). With the downward movement of the second end (9b), the lever (9) rotates about the axis of the lever pin (10) which in turn moves the first end (9a) upward and releases the engagement with shutter face (6d). As a result, the shutter (6) moves to opened position due to a pre-loaded torsion spring (8). At opened condition the first end (9a) rest on the surface (6g). (As shown in Figures 4b)
Figure 10 illustrates an assembled isometric view of the shutter module (S) for cylinder lock in vehicles according to an embodiment of the present disclosure. For assembling the shutter module with the cylinder lock the shutter module is fixed with at least one bolt/stud through the mounting hole (H) as shown in figure10.
WORKING – OPENING OF SHUTTER
At closed condition of the shutter, the spring loaded magnets (13a, 13b, 13c) are engaged with the depressions (5b, 5c, 5d) formed on the cylinder shutter lock (5) thereby locking the vertical movement of the cylinder shutter lock (5) as shown in figure 3.
Upon insertion of the distal end (1b) of the key (1) in the cavity (5a) of the cylinder shutter lock (5) in such a way that the axes of the magnets (2a, 2b, 2c) in the key aligned with the axes of spring loaded magnets (13a, 13b, 13c). As a result, the magnets (2a, 2b, 2c) of the magnetic key repels the spring loaded magnets (13a, 13b, 13c) due to similar polar repulsion thereby unlocking the vertical movement of the cylinder shutter lock (5) as shown in figure 5. The positioning of the magnet key i.e. the distal end (1b) of the key to insert in the cavity (5a) is provided by addition of material (5a1) shown in figure 8. When the cylinder shutter lock (5) is pushed down in vertical direction, cylinder shutter lock spring (12) gets energized in upward direction. The bottom face protrusion (5e) of cylinder shutter lock (5) pushes the second end (9b) in downward direction. During this push, the lever spring (11) also gets energized. The shutter (6) is
12
loaded with a pre-loaded torsion spring (8) which is ready to rotate and has been provided a face (6d) where the first end (9a) of lever (9) rests initially. As the second end (9b) of lever (9) is pushed, the first end (9a) rises due to the pivot with the lever pin (10) in case (3) and makes the shutter (6) to rotate with the help of the torsion spring (8). Hence the shutter face (6f) uncovers the key insertion hole (3b). This is the opening position of shutter (6).
WORKING – CLOSING OF SHUTTER
Upon pushing the shutter knob (6e) manually towards the closed position, the shutter (6) is rotated about the pivot (the extruded pin (3d)) at case (3) to close position thereby energizing the torsion spring (8). During rotation of the shutter (6), the first end (9a) of the lever rest on the face (6g) and at close position the lever end (9a) engages with the shutter face (6d) due to the biasing force of spring (11) thereby locking the shutter (6) with the first end (9a) of the lever (9).At closed position, the first end (9a) of the lever (9) engaged with the face (6d) provided on the top surface(6a) of the shutter(6).
ADVANTAGES OF DISCLOSURE
The primary advantage of the present shutter module for cylinder lock for vehicle is to enable automatic operation of shutter by making the entire assembly simple, smooth, robust, user friendly and devoid of unwanted noises and wear of mechanical key.
Another advantage of the present shutter module for cylinder lock for vehicle is that the said mechanisms required less space to accommodate of the components which work in tandem making the functioning of the entire assembly simple. Therefore, it is less expensive to manufacture the device and its components and functionally it is easy to operate by the user.
13
EQUIVALENTS:
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
Any discussion of documents, acts, materials, devices, articles and the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a
14
part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.
While considerable emphasis has been placed herein on the particular features of this disclosure, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other modifications in the nature of the disclosure or the preferred embodiments will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.
15
LIST OF REFERENCE NUMERALS
Description
Reference Number
Shutter module for cylinder lock
(S)
Key
(1)
Proximal end of key
(1a)
Distal end of key
(1b)
Magnets
(2a, 2b, 2c)
Case
(3)
Cavity
(3a)
Key Insertion hole
(3b)
Rectangular cavity
(3c)
Extruded pin of case
(3d)
Vertically extruded pin
(3e)
Slot
(3f)
Guiding hole
(3h)
Holes of case
(3i, 3j)
Hole
(3k)
Stepped wall
(3l)
Cover
(4)
Slots
(4a, 4b, 4c, 4d)
First hole
(4e)
Second/Key hole
(4f)
Threaded holes
(4g)
16
Threaded holes
(4h)
Cylinder shutter lock
(5)
Cavity
(5a)
Depressions
(5b, 5c, 5d, 5g)
Protrusion
(5e)
Cylindrical projection
(5f)
Projected collar
(5h)
groove
(5i)
Water drain slot
(5j)
Shutter
(6)
Top surface
(6a)
Bottom surface
(6b)
Undercut
(6c)
face
(6d)
Shutter knob
(6e)
Circular face
(6f)
face
(6g)
Retaining plate
(7)
Torsion spring
(8)
First end of torsion spring
(8a)
Second end of torsion spring
(8b)
Lever
(9)
First end of lever
(9a)
Second end of lever
(9b)
Lever pin
(10)
17
Lever spring
(11)
Cylinder shutter lock spring
(12)
Spring loaded magnets
(13a, 13b, 13c)
Springs
(14a, 14b, 14c)
Mounting screw
(15)
O-ring
(16)
Mounting hole
H
Shutter module

We claim:
1. A shutter module (S) for cylinder lock provided with a shutter mechanism operated by a key (1), the said module comprising;
a cover (4) mounted on a case (3); the said cover (4) consisting a top surface and a rear surface wherein the rear surface is provided with plurality of slots (4a, 4b, 4c, 4d) for accommodating a plurality of spring loaded magnets (13a, 13b, 13c); the top surface consisting a key insertion hole (4f) that is aligned with a key hole (3b) of the case (3);
a cylinder shutter lock (5) provided with a cavity (5a) on the top to insert the key (1) in the predetermined position; the said cylinder shutter lock (5) resiliently mounted in a cavity (3a) of the case (3) having plurality of depressions (5b, 5c, 5d, 5g) formed on an outer surface for receiving the plurality of spring loaded magnets (13a, 13b, 13c), thereby restricting vertical movement of the cylinder shutter lock (5);
a shutter (6) being resiliently pivoted on the case (3) to cover the key hole (3b) of the case (3), the said shutter (6) having a top face (6a), bottom face (6b) and a shutter knob (6e);
a lever (9) pivotably mounted on the case (3) via a lever pin (10), the said lever (9) consisting a first end (9a) and a second end (9b) wherein the first end (9a) is operationally engageable with the shutter (6) and the second end (9b) is engaged with a lever spring (11).
2. The shutter module (S) as claimed in claim 1, wherein the case (3) has an extruded pin (3d) provided for pivotable mounting of the shutter (6).
19
3. The shutter module (S) as claimed in claim 1, wherein a slot (3f) is provided in the case (3) to accommodate the resilient mean and operationally move the shutter (6) and a guiding hole(3h) to guide the cylinder shutter lock (5).
4. The shutter module (S) as claimed in claim 1, wherein the cylinder shutter lock (5) has a cylindrical projection (5f) that is resiliently inserted in the cavity (3a) of the case (3) and guided through the guiding hole (3h).
5. The shutter module (S) as claimed in claim 1, wherein the cylinder shutter lock (5) is operationally engageable with the second end (9b) of the lever (9) via a protrusion (5e).
6. The shutter module (S) as claimed in claim 1, wherein the shutter (6) has an irregular profile and being engaged with the lever (9) in closed condition.
7. The shutter module (S) as claimed in claim 1, wherein the top surface (6a) of the shutter (6) is provided with a face (6d) for resting the lever (9).
8. The shutter module (S) as claimed in claim 1, wherein the bottom surface (6b) of the shutter (6) is provided with a first undercut (6c).
9. The shutter module (S) as claimed in claim 8, wherein the extruded pin (3d) is provided with a torsion spring (8) having a first end (8a) secured in the first undercut(6c) and a second end secured to the case (3).
10. The shutter module (S) as claimed in claim 1, wherein the lever (9) is pivotably mounted in a rectangular cavity (3c) formed in the case (3).
11. The shutter module (S) as claimed in claim 1, wherein the cylinder shutter lock (5) is provided with at least one projected collar (5h) on the outer periphery that falls on the surface of a retaining plate (7) at locked condition.
12. The shutter module (S) as claimed in claim 1, wherein the lever (9) is pivoted by a lever pin (10) inserted through the case (3).