SE1050383A1 - Lock with blocking function for a rule - Google Patents

Description

Summary An object of the invention is to provide an improved lock which allows blocked interlocking of a bolt in the lock.

Another object is to provide a lock which, when the lock is manipulated by objects inserted into the lock housing, is prevented or considerably made more difficult.

Accordingly, there is provided a lock comprising a lock housing and a locking mechanism, which locking mechanism is arranged in the lock housing, and comprises: a latch arranged to assume a regulating position where the latch protrudes relative to the lock housing, a rower for operating the latch, which rudder is rotatably arranged in the lock housing, a carrier arranged to mechanically transmit movement from the rower to the latch, which carrier is arranged to assume a locked position preventing movement of the latch when the latch assumes its adjusting position, and a locking mechanism for blocking movement of the carrier, which locking mechanism is arranged positionable in a blocking position and a non-blocking position, the rower and the locking mechanism having means for operative cooperation whereby the blocking mechanism can be operated by the rower from the blocking position, the carrier having a portion in rotating cooperation with the rower, which portion is concentrically arranged with the rower for rotation about the same axis.

By providing a lock in which the rower and the carrier are concentrically arranged, a more compact lock can be achieved. In addition, the locking mechanism can be easily encapsulated to increase security against tampering with the lock.

The rower and the carrier can be arranged with a winch in a direction of rotation so that the rower is movable relative to the carrier a first partial movement. This allows the rower during the first sub-movement to cooperate with the blocking mechanism to release the carrier from its blocking position.

The carrier can be carried by a second sub-movement. Thus, the carrier can carry the rule from its regulating position.

The lock may comprise an inner housing in the lock housing, the locking mechanism being arranged in the inner housing. By arranging the locking mechanism in an inner housing, security for the lock can be further increased.

The rower and the carrier may have cooperating means for mechanical coupling of the movement, which cooperating means are arranged inside the inner housing.

By arranging the cooperating members in the inner housing, tampering with the lock is made more difficult and thus security increases. The locking mechanism may comprise a spring-loaded locking element movable in a recess in the carrier. Thus, in its interlocking position, the carrier is blocked by the rule, whereby manipulation of the carrier is considerably made more difficult.

The means for operative cooperation may comprise sliding surfaces creating displacement of the blocking element as the blocking mechanism and the rudder move in relation to each other, one sliding surface being constituted by an inclined sliding surface. The inclined sliding surface can thus release the blocking element by turning the rower and thereby release the carrier. The carrier is thus released by turning the rower but not by turning, via for example manipulation, the carrier itself.

The locking mechanism may comprise a pivotally arranged lever with hook for locking the carrier in its locked position. Thus, an alternative device for blocking the carrier in its interlocking position can be provided.

The means for operative cooperation may comprise projections on the rudder arranged to act upon rotation of the hook for releasing the carrier.

Example Examples Exemplary embodiments of the invention will be described in detail below with reference to the figures of which: Figures 1a-b show plan views of a lock according to a first embodiment, the lock being shown in a regulating position and a non-regulating position, respectively.

Figure 2 shows an exploded view of a locking mechanism in the lock in Figures 1a-b.

Figures 3a-c show how the locking mechanism in figure 2 is operated from an interlocking position to a non-adjusting position.

Figure 4 shows the locking mechanism in Figures 1a-b in a locked position.

Figures 5a-b show plan views of a lock according to a second embodiment, the lock being shown in a regulating position and a non-regulating position, respectively.

Figure 6 shows an exploded view of a locking mechanism in the lock in Figures 5a-b.

Figures 7a-c show how the locking mechanism in figure 6 is operated from an interlocking state to a non-regulating state. Detailed Description of Embodiment Examples With reference to Figures 1-4, an exemplary first embodiment of a lock 1 according to the invention will be hereby described.

The lock 1 comprises, inter alia, a lock housing 3 which consists of a housing consisting of a first and a second cover plate (not shown) and a locking post 5, a handle 7 and a drop piston 9. The handle 7 is intended to operate the drop piston 9 by means of the coupling means 13 which, when operating the handle 7 via the joint 15, pushes the drop piston 9 in a linear path L in and out through an opening in the locking post 5. By means of a spring member 14, the drop piston 9 is preferably moved to a position projecting from the locking post 5 when the handle 7 is in its neutral position.

The lock housing 3 comprises a locking mechanism 11 which consists, inter alia, of a latch 17, exemplified by a turning latch, a rower 21 which in the example shown consists of a cylinder rower, and a carrier 23.

The latch 17, the rower 21 and the carrier 23 are in cooperating mechanical coupling. When turning the rudder 21 in the direction of rotation A ', the driver 23 brings the control 17 to a controlling position A, as shown in figure 1a. In the regulating position A, the bolt 17 projects from the locking post 5, usually to thereby prevent a door in which the lock 1 is installed from opening. In the control position A, the carrier 23 assumes its corresponding interlocking position A for interlocking the rule 17.

Figure 1b shows the lock 1 in a non-adjusting position B. The non-adjusting position B is achieved by turning the rudder 21 in a direction of rotation B '. The direction of rotation B 'is a direction opposite to the direction A'. In the non-regulating position B, the carrier assumes its corresponding free position B.

By turning the rudder 21 in the direction of rotation B ', the driver 23 brings the latch 17 to be accommodated substantially in its entirety in the lock housing 3. Thus, opening of a door is allowed in the case where the lock housing is installed in the door.

Figure 2 shows an exploded view of the locking mechanism 11. The locking mechanism 11 consists of the latch 17, the rudder 21, the carrier 23, an inner housing 19, a locking mechanism 25, a spacer 27 and a carrier spring 29.

The inner housing 19 has a cylindrical through hole arranged to at least partially receive the rudder 21 and a portion 23-1 of the carrier 23. The portion 23-1 has a through hole arranged for rotating cooperation with the rudder 21. The rotating cooperation is provided by the portion 23 -1 is concentrically arranged with the rower 21. In this first exemplary embodiment, the portion 23-1 is arranged to enclose a first cylindrical portion 21-1 of the rudder 21 with a first radius r1. A second cylindrical portion 21-2 of the rudder 21 has a second radius rg which is larger than r1 and substantially equal to a radius r3 of the through hole in the inner housing 19 to thereby allow rotation of the rudder 21 therein.

As illustrated in Figure 3a, the inner housing 19 has a chamber 31 which is connected to the cylindrical through hole by means of an opening. The chamber 31 is arranged to house the blocking mechanism 25, which blocking mechanism 25 comprises a blocking element 25-1 in cooperation with a blocking spring 25-2 in order thereby to provide a resilient blocking element 25-1.

The second cylindrical portion 21-2 of the rower 21 has a radial recess 21-3 arranged in its outer peripheral surface. The radial recess 21-3 is for receiving the blocking element 25-1, thereby blocking the carrier 23 from leaving the interlocking position A in the locking position A of the carrier. Together, the radial recess 21-3 and the blocking element 25-1 constitute means for operative interaction between the rudder 21 and the blocking mechanism 25. The carrier 23 has a corresponding radial recess 23-4 which is aligned with the radial recess 21-3.

In Figure 3a it can be seen that the radial recess 21-3 has a first side wall 21-3 'which forms a sliding surface which is inclined relative to a second side wall 21-3 "of the radial recess 21-4 which constitutes an opposite side of the radial recess 21 -3 in relation to the first side wall 21-3 ". The radial recess 21-3 thus constitutes a converging recess where the first side wall 21-3 'presents a radially inwardly radiating radius towards the second side wall 21-3'. surface. The first side wall 21-3 'thus allows displacement of the blocking element 25-1 radially outwards when the rudder 21 is rotated in the direction of rotation B'. When rotating the rudder 21 in the direction of rotation A ', displacement of the blocking element 25-1 from the radial recess 21-3 is not permitted as the second side wall 21-3 "is substantially parallel to the side surface 25-3 of the blocking element, which is clearly shown in Figure 3a The displacement effect is preferably achieved in that the first wall 21-3 'constitutes the wall which, when the rudder 21 is rotated in the direction B', abuts against the blocking element 25.

Alternatively, the first and second walls of the radial recess may be parallel to each other, the blocking element having an inclined sliding surface on its side which abuts against the first wall of the radial recess when the rower rotates in the direction B '. The inclined sliding surface is preferably shaped so that the blocking element tapers in its direction of extension towards the rower.

In order to prevent manipulation of the carrier 23 from releasing the blocking element 25-1, the opposite walls 23-4 of the carrier 23 are preferably parallel.

The carrier 23 has a carrier arm 23-2 for engaging a recess 17-1 in the bolt 17, whereby the carrier 23 is allowed to actuate continuously by the bolt 17 between its regulating position A and its non-regulating position B.

The through hole in the portion 23-1 has a plurality of radial recesses 23-3 along the periphery of the through hole, which are intended to cooperate with radial projections 21-4 corresponding to the rudder 21. The extent of the radial recesses 23-3 in the azimuth direction is preferably greater than the extent of the corresponding radial projections 21-4 in the azimuth direction, whereby a play is formed between the radial recesses 23-3 and the radial projections 21-4. A certain limited relative rotation between the rudder 21 and the carrier 23 is thus permitted in the case of rotational movement of the rower 21 or the carrier 23. This is shown in more detail in Figures 3a-c and Figure 4.

The spring 29 is arranged in azimuth direction, clamped between one of the radial projections 21-4 and one of the radial recesses 23-3 to exert pressure therebetween. In this way, only displacement of the blocking element 25-1 from the radial recess 21-3 by a constant force action of the rudder 21 in the direction of rotation B 'is allowed. This increases the safety of the lock as it becomes more difficult to accidentally lift the blocking element 25-1 out of the recess 21-3 by displacing it.

The spring 29 also ensures that the recesses 21 -3 of the rower 21 are aligned with the blocking element 25-1 when the carrier 23 assumes its locking position A.

The spacer 27 is arranged to enclose the first cylindrical portion 21-1 with the carrier portion 23-1 placed between the rudder 21 and the spacer 27 to thereby hold together the arrangement consisting of the rudder 21, the carrier 23 and the inner housing 19. The rudder 21 preferably abuts against the first cover plate and the spacer 27 preferably abuts against the opposite second cover plate. This allows a compact construction of the lock 1.

Referring to Figures 3a-c, the function of the locking mechanism 11 is illustrated below when the carrier 23 is operated from its locking position A to its free position B. In order to clarify the function of the locking mechanism 11, other details in the locking housing 3, as the rule 17, omitted.

Figure 3a shows the locking mechanism in its locking position A where the blocking element 25-1 blocks the movement of the driver 23 by engaging with the radial recesses 21-3 of the rudder 21 and the radial recesses 21-4 of the driver 23. The blocking element 25-1 is received in the radial recesses 21-3 and 23-4, respectively, and is retained therein by means of the blocking spring 25-2.

When the rudder 21 is rotated in the direction of rotation B ', the first surface 21-3' of the radial recess 21-3 abuts against a lower surface 25-3 of the blocking element 25-1, which is illustrated in figure 3b. The sliding surfaces constituted by the first wall 21-3 'and the lower surface 25-3 thus allow the blocking element 25-1 to be lifted out of the radial recesses 21-3 and 23-4 during said rotation.

The clearance between the radial projections 21-4 and the radial recesses 23-3 and the radial recess 21-3 and the radial recess 23-4, respectively, allows a first partial movement in the direction of rotation B 'at which the carrier 23 does not perform any rotation and thus also not performing any maneuvering of the rule 17. During this first partial movement, the blocking element 25-1 is lifted out of the radial recess 21-3. Upon further rotation of the rudder 21 in the direction of rotation B ', rotation of the driver 23 and thus maneuvering of the latch 17 from the controlled position A to the uncontrolled position B is effected. In this second sub-movement, the rudder 21 brings the driver 23 in a rotational movement by radial projections 21 -4 engaging the surfaces 33 of the radial recesses 23-3, as shown in Figure 4.

The design of the radial projections 21-4 and the radial recesses 23-3 thus allows via the game two functions, namely to cause in a first partial movement a rotation of only the rudder 21 to release the carrier 23 from its blocked locked position A and then, in a second partial movement, bring the carrier 23 to thereby allow operation of the latch 17.

Figure 3c shows the locking mechanism 11 when the carrier is in its free position B after rotating the first partial movement and the second partial movement in the direction of rotation B '. This figure corresponds to what is shown in figure 1b.

With reference to Figures 5a-7c, an exemplary second embodiment of a lock 1 'according to the invention will be hereby described. In a manner similar to that described in connection with Figures 1a and 1b, the lock comprises a lock housing 3 'which consists of a first and a second cover plate (not shown) and a locking post 5'. The lock 1 '10 15 20 25 30 further comprises a drop piston 9' which is operable by means of a handle 7 '. The function of the drop piston 9 'and the handle 7' is similar to that already described above, so further description of this is omitted.

The lock housing 3 'further comprises a locking mechanism 11' which consists, inter alia, of a latch 17 ', a rower 21' and a carrier 23 '. Analogous to the first embodiment, the control 23 'is mechanically manoeuvrable by means of the rudder 21', in this example a cylinder rudder, via the carrier 23 '.

Figure 5a shows the bolt 17 'in its control position A, which can be achieved by turning the rudder 21' in a direction of rotation A '. In the regulating position A, the carrier 23 'assumes its corresponding interlocking position A.

Figure 5b shows the latch 17 'in its non-adjusting position B, which can be achieved by turning the rudder 21' in a direction of rotation B '. In the non-regulating position B, the carrier 23 'assumes its corresponding free position B.

Figure 6 shows an exploded view of the locking mechanism 11 '. The locking mechanism 11 'comprises the carrier 23', two rowers 21 ', the latch 17', a locking mechanism 34 and cover plates 43-1 and 43-2. The locking mechanism comprises a locking element housing 35, a locking element 37, a lever spring 39 and a shaft journal 41.

The carrier 23 'has a portion 23'-1 in rotatable cooperation with the rudders 21', which carrier 23 'has a carrying arm 23'-2 which is arranged to mechanically maneuver the bolt 17' between its regulating position A when rotating the rudders 21 ' and non-regulating position B. The rudders 21 'are arranged concentrically with the portion 23'-1 of the carrier by the rows 21 'being enclosed by the portion 23'-1, which portion 23'-1 has a circular through hole 23'-5 for device of the rowers 21 'therein.

The blocking element housing 35 has a channel 35-1 for housing the blocking element 37 therein. The blocking element housing 35 has an upper surface 35-5 in which the channel 35-1 has an opening 35-6. In the far end of the channel 35-1 in relation to the opening 35-6 there is a groove 35-2. The chute 35-2 is transverse to the direction of propagation of the channel 35-1. The locking element 37 comprises a lever 37-4 and has a hook 37-1 at its corresponding end to thereby allow the hook 37-1 to engage with the chute 35-2 when the carrier 23 'assumes its locking position A. The blocking element 37 is thus pivotable in the channel 35-1 via a pivot joint which is formed by a hole 37-2 passing through the blocking element and a hole 23'-3 passing through the carrier 23 'and the axial pin 41 received in these holes.

A lever spring 39 is arranged in the chamber 35-3 of the blocking element housing 35, which lever spring 39 abuts against the blocking element 37 and thereby exerts a pressure on the hook 37-1 for its engagement with the chute 35-2 when the carrier 23 'is in its locking position A.

The blocking element 37 has a recess 37-3 in one end of the blocking element 37 which end is not housed in the blocking element housing 35. This end projects into the circular through hole 23'-5 through an opening 23'-4 in the portion 23'-1.

The blocking element 37 is arranged to be actuated by means of an axial projection 21 13 of each of the rowers 21, which engages with the recess 37-3. When the rudders 21 'are rotated during a first partial movement, starting from the locking position A, the blocking element 37 pivots around the axis pin 41 in a direction away from the groove 35-2 to push the hook 37-1 therefrom. In a second partial movement of the rudders 21 ', the blocking element 37 slides partially out of the channel 35-1 through the opening 35-6 and during the second partial movement allows rotation of the carrier 23'.

The blocking element housing 35 has a pin guard 35-4 which consists of a ridge at the opening 35-6 along a side adjacent to the bolt 17 '.

Referring to Figures 7a-c, the function of the locking mechanism 11 'is illustrated below when the carrier 23' is operated from its locking position A to its free position B. In order to clarify the function of the locking mechanism 11, other details in the locking housing 3 ', such as the bolt 17' , omitted. To further facilitate understanding, only one of the rowers 21 'is shown. The functional principle as well as the structure is for both rowers 21 'is the same.

Figure 7a shows the locking mechanism 11 'when the carrier 23' is in its interlocking position A. In the interlocking position A the carrier 23 'abuts against the surface 35-5, which prevents access to the blocking element 37. In particular, the pin guard 35-4 is placed to further impede access to the blocking element 37 by acting as a blocking barrier against the blocking element 37 during manipulation attempts via, for example, a gap between the latch 17 'and the locking post 5'.

The hook 37-1 of the blocking element 37 engages the chute 35-2 in order thereby to prevent operation of the carrier 23 '. In this position, the spring 39 presses against the locking element 37 to secure the engagement between the hook 37-1 and the groove 35-2. By turning the rudder 21 'in the direction of rotation B', the projection 21'-3 acts on the recess 37-3 and applies a force F thereto. During the first partial movement of the rudder 21 ', the hook 37-1 is pushed by pivoting via the shaft pin 41 in a direction of rotation corresponding to the direction of rotation A', whereby the blocking element 37 is released. This is illustrated in Figure 7b.

Figure 7c shows a position of the locking mechanism 11 'where the released blocking element 37 slides in the channel 35-1 during the second partial movement of the rudder 21' in the direction of rotation B '. It should be understood that the first and second sub-movements may consist of a continuous rotational movement for both the first and the second embodiment.

When the blocking element 37 is released from its blocking position, operation of the carrier 23 'is thus permitted by co-operation between the projection 21'-3 and the recess 37-3 in the blocking element 37, which mechanically co-operate with the carrier 23' via the shaft pin 41. When the carrier 23 'has been released from its interlocking position A, operation of the interlock 17' is permitted, whereby the interlock can assume its non-adjusting position B.

Exemplary embodiments of the invention have been described above. The invention is not limited to these embodiments but can be freely varied within the scope of the appended claims. For example, the lock may be of the espagnolette type and the rowers 21, 21 'may consist of pressure rowers or handle rowers.

Claims (14)

10 15 20 25 30 11 Patent claims A reading (1; 1 ') comprising a reading housing (3; 3') and a reading mechanism (11; 11 '), which reading mechanism (11; 11') is arranged in the reading housing (3; 3 '), and comprises : a bolt (17; 17 ') arranged to assume a controlling position (A) where the bolt projects relative to the reading housing (3; 3'), a rower (21; 21 ') for operating the bolt (17; 17') ), which rudder (21; 21 ') is rotatably arranged in the lock housing (3; 3'), a carrier (23; 23 ') arranged to mechanically transmit movement from the rudder (21; 21') to the bolt (17; 17 ') ), which carrier (23; 23 ') is arranged to assume a pre-locked position (A) preventing movement of the bolt (17; 17') when the bolt (17; 17 ') assumes its controlling position (A), and a locking mechanism (25; 34) for blocking movement of the carrier (23; 23 '), said locking mechanism (25; 34) being arranged positionable in a blocking position and a non-blocking position, the rower (21; 21') and the blocking mechanism (25; 34) has means (21-3, 25-1; 21 '-3, 37-3) for operative interaction whereby the blocking mechanism (25; 34) can be operated by the rower (21; 21 ') from the blocking position (A), the carrier (23; 23') having a portion (23-1; 23'-1) in rotating cooperation with the rower (21; 21 '), which portion (23-1; 23'-1) is concentrically arranged with the rudder (21; 21') for rotation about the same axis. A lock (1; 1 ') according to claim 1, wherein the rower (21; 21') and the carrier (23; 23 ') are arranged with a winch in a direction of rotation so that the rower (21; 21') is movable relative to the carrier (23; 23 ') a first sub-movement. Read (1; 1 ') according to claim 2, wherein the rower (21; 21') in the first sub-movement cooperates with the blocking mechanism (25; 34) to release the carrier (23; 23 ') from its blocking position ( A). Read (1; 1 ') according to claim 2 or 3, wherein the carrier (23; 23') is carried by a second partial movement. 10 15 20 25 30 12 Lock (1; 1 ') according to any one of the preceding claims, wherein the carrier (23; 23') is provided with an arm (23-2; 23'-2) for operating the bolt (17; 17 ') therewith. . A lock (1) according to any one of the preceding claims, comprising an inner housing (19) in the lock housing (3), the locking mechanism (25) being arranged in the inner housing (19). Lock (1) according to claim 6, wherein the rudder (21) and the carrier (23) have cooperating means (21-3, 25-1) for mechanical coupling of the movement, which cooperating means (21-3, 25-) 1) are arranged inside the inner housing (19). A lock (1) according to any one of the preceding claims, wherein the locking mechanism (25) comprises a spring-loaded locking element (25-1) movable in a recess (23-4) in the carrier (23). Lock (1) according to claim 8, wherein the means (21-3, 25-1) for operative cooperation comprise sliding surfaces (21-3 ', 25-3) creating displacement of the blocking element (25-1) when the blocking mechanism ( 25) and the rudder (21) moves relative to each other, one sliding surface being constituted by an inclined sliding surface. A lock (1 ') according to any one of claims 1-5, wherein the locking mechanism (25) comprises a pivotally arranged lever (37) with hook (37-1) for locking the carrier (23') in its locked position (A) . A lock (1 ') according to claim 10, wherein the means (21'-3, 37-3) for operative cooperation comprise projections (21'-3) on the rudder (21') arranged to actuate the hook (37) upon rotation. - 1) for releasing the carrier (23 '). A lock (1 ') according to claim 10 or 11, wherein the rower (21') is arranged to operate the latch (17 ') via the blocking element (37). A lock (1 ') according to any one of claims 10-12, wherein the rower (21') is arranged inside the portion (23'-1). 13 A lock (1; 1 ') according to any one of the preceding claims, wherein the latch (17; 17') is a pivot rule.