JP2007211413A - Eccentric lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve crime preventiveness by providing a replaceable eccentric lock even in a cylinder mounting structure in which a turning input member of a lock case is eccentric to a cylinder lock mounting hole. <P>SOLUTION: The eccentric lock 100 mounted to a door 31 provided with the lock case 33 having the turning input member 35, comprises a cylinder lock 11 in which a turning output member 39 is eccentric to the turning input member 35. The eccentric lock 100 is provided with a cylinder body with an outer cylinder 47 coaxial with the turning output member 39; a first housing 13 coaxially inserted outside of the cylinder body; a second housing 15 connected to one end of the first housing 13 to hold the turning output member 39 inside, and having an opening hole 15a coaxial with the turning input member 35, at the other end; and an eccentric turning transmission mechanism 17 turnably provided in the second housing 15 to transmit turning force from the turning output member 39 to the turning input member 35. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an eccentric lock in which a rotation input member of a lock box and a rotation output member of a cylinder lock are eccentrically connected.

  The cylinder lock is provided with an inner cylinder having a key insertion hole inside the outer cylinder. For example, a plurality of tumbler pins arranged in the key key insertion direction are inserted into the inner cylinder / By moving to a predetermined position in the diameter direction of the outer cylinder, the inner cylinder can be rotated by making the shear line coincide with the boundary position between the inner cylinder and the outer cylinder. As a result, the locking / unlocking operation force is input from the rotation output member provided at the rear end of the inner cylinder to the locking / unlocking mechanism in the lock box provided in the door, and the dead bolt is moved forward and backward from the door's mouth to unlock and unlock the door. The lock is possible.

  The cylinder lock is fixed to the inside of a fixed cylinder attached to the lock box so as not to be relatively rotatable. The fixed cylinder has a proximal end fixed to the lock box and a distal end exposed from the door surface, for example, protruding. On the outer periphery of the fixed cylinder protruding from the door surface, a conical decorative ring with the distal end side cut off is extrapolated so that the distal end portion is the distal end side of the cylinder lock. This decorative ring abuts the rear end surface on the door surface and covers the fixed tube mounting hole that opens to the door surface into which the fixed tube is inserted.

  In general, in a cylinder lock, an inner cylinder and an outer cylinder are arranged coaxially. Therefore, in this way, in the cylinder lock, the rotation shaft of the key and the rotation output member provided at the rear end of the inner cylinder are coaxial. In addition, the cylinder lock has an eccentricity between the central axis of the inner cylinder and the central axis of the outer cylinder in order to secure a large storage space for the tumbler pins and the like accommodated in the radial direction of the inner cylinder and the outer cylinder. There is also the thing of the structure made to do. Therefore, in this type of cylinder lock, the outer cylinder, that is, the center of the fixed cylinder, and the rotation output member provided at the rear end of the inner cylinder are eccentric. That is, in the cylinder lock mounting structure, the rotation input member of the lock box is coaxial and eccentric with respect to the cylinder lock mounting hole.

The structure of the conventional cylinder lock is that the cylinder lock is fixed inside the fixed cylinder protruding from the door surface, and only the front end face of the inner cylinder is inserted from the center opening hole of the decorative ring attached so as to cover the front end face of the cylinder lock. It is made public and crime prevention is improved. However, although most of the front end surface is covered with the front plate of the decorative ring, etc., the front end surface of the outer cylinder and the front end surface of the fixed cylinder exist on the back surface of the front plate. Including a hole saw that is a hole drilling tool, especially if a cylindrical cut is made from the front end face of the outer cylinder, this includes the problem that the cylinder lock mechanism can be broken or the inner cylinder can be removed by unauthorized removal. It was. Further, according to such a destructive act, unauthorized unlocking by removing the cylinder lock or the like is not impossible by similarly making a cylindrical cut from the front end surface of the fixed cylinder.
In contrast, an improved cylinder lock that can prevent the destruction of the cylinder lock mechanism by making a cylindrical cut in the front end surface of the outer cylinder or the fixed cylinder, or the destructive unauthorized unlocking of the inner cylinder or the entire cylinder lock. The structure of was proposed.
However, as described above, there are a cylinder lock mounting structure in which the rotation input member of the lock box is coaxial with respect to the cylinder lock mounting hole, and a cylinder lock is eccentric.
For this reason, when the rotation output member of the improved cylinder lock with improved crime prevention is coaxial with the cylinder lock mounting hole, the cylinder lock in which the rotation output member is eccentric with respect to the cylinder lock mounting hole is attached. In addition, the rotation output member and the rotation input member do not coincide with each other in the cylinder lock mounting hole, and there is a problem that the cylinder lock mounting hole cannot be replaced and attached to the improved cylinder lock with high crime prevention.

  The present invention has been made in view of the above circumstances, and provides an eccentric lock that can be replaced even when the cylinder mounting structure in which the rotation input member of the lock box is eccentric with respect to the cylinder lock mounting hole. Therefore, it aims at improving crime prevention.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The eccentric lock according to claim 1 of the present invention is attached to the door 31 provided with the lock box 33 having the rotation input member 35, and the rotation output member 39 is eccentric with respect to the rotation input member 35. An eccentric lock 100 including a cylinder lock 11,
A first housing 13 coaxially inserted into the cylinder lock 11;
A second housing 15 connected to one end of the first housing 13 and containing the rotation output member 39 inward and having an opening hole 15a coaxial with the rotation input member 35 at the other end;
An eccentric rotation transmission mechanism 17 that is rotatably installed in the second housing 15 and transmits the rotational force from the rotation output member 39 to the rotation input member 35;
The eccentric rotation transmission mechanism 17 includes:
A first connecting member 41, one end of which is connected to the rotation output member 39 so as not to be relatively rotatable;
A second connecting member 43 that connects the other end to the rotation input member 35 in a relatively non-rotatable manner;
The first connecting member 41 and the second connecting member 43 are connected to each other so that a concave groove 41b and a ridge 43b formed in the diametrical direction are fitted to each other so as to be relatively movable in the diametrical direction and relatively non-rotatable. It is characterized by that.

  In this eccentric lock, the rotational force from the rotation output member 39 rotated by the locking / unlocking operation of the cylinder lock 11 receives the rotation input of the eccentric lock box 33 via the eccentric rotation transmission mechanism 17. It is transmitted to the member 35. That is, the cylinder lock 11 can be attached to the rotation input member 35 of the lock box 33 so as to be eccentric. Thus, any new cylinder lock 11, using the existing cylinder lock mounting hole 37 of the door 31 whose center of the hole is eccentric with respect to the rotation input member 35 of the lock box 33 provided on the door 31, In other words, the cylinder lock can be replaced with a highly secure crime lock with a more complicated internal structure, a cylinder lock with improved usability, a cylinder lock with improved breakage resistance, or the like.

The eccentric lock according to claim 2, wherein the cylinder lock 11 in which the front portion of the inner cylinder 19 protrudes in the axial direction from the outer cylinder 47 is fixed to the inside of the first housing 13, and the front end face of the inner cylinder 19 is fixed. The eccentric lock 100 according to claim 1, wherein the inner cylinder 19 is rotatable with respect to the outer cylinder 47 by inserting a key into a key hole 49 opened in
An annular plate 51 that is made of a hard steel material and that inserts an inner hole 51 a into the inner cylinder 19 projecting from the outer cylinder 47 and covers the front end surface of the outer cylinder 47 is provided between the cylinder lock 11 and the first housing 13. It is characterized in that it is provided so as to be rotatable in between.

  In this eccentric lock, the annular plate 51 made of a hard steel material covers the front end surface of the outer cylinder 47, and the annular plate 51 is rotatably held, so that the outer cylinder 47 is formed using a cylindrical hole saw. Even if it is going to make a cylindrical cut in the front end face, the annular plate 51 made of hard steel rotates together with the hole saw, and the hole saw prevents the cut into the front end face of the outer cylinder. Thereby, destructive unauthorized unlocking such as destruction of the locking mechanism or extraction of the inner cylinder 19 due to the outer cylinder 47 being cut by the blade portion of the hole saw is prevented.

  The eccentric lock according to claim 3 is characterized in that a pin 53 made of a hard steel material is embedded in the distal end of the first housing 13 in the radial direction.

  In this eccentric lock, a pin 53 made of a hard steel material is embedded in the distal end of the first housing 13 in the radial direction so as to be cylindrical on the front end surface of the first housing 13 using a cylindrical hole saw. When the predetermined cut is made, the blade portion of the hole saw hits the pin 53, and the pin 53 prevents the hole saw from being cut further, and this also causes the first housing 13 to be cylindrical. It becomes difficult to perform destructive unauthorized unlocking such as cutting the cylinder lock 11 by making a cut in a shape.

  According to the eccentric lock of the first aspect of the present invention, the cylinder lock is accommodated in the first housing, and a second housing having an opening hole coaxial with the rotation input member is connected to the first housing. The second housing is provided with an eccentric rotation transmission mechanism for connecting the rotation output member and the rotation input member, so that the rotational force from the rotation output member rotated by the locking / unlocking operation of the cylinder lock can be obtained. Then, it can be transmitted to the rotation input member of the lock box eccentric with respect to the rotation center of the rotation output member via the eccentric rotation transmission mechanism. That is, it becomes possible to attach the cylinder lock eccentrically to the rotation input member of the lock box. As a result, even if the door has a cylinder lock mounting hole at an eccentric position with respect to the rotation input member of the lock box, the existing cylinder lock mounting hole is used to provide a highly secure cylinder lock. Can be replaced.

  According to the eccentric lock of the second aspect, the annular plate is formed by inserting the inner hole into the inner cylinder made of a hard steel material and projecting from the outer cylinder and covering the front end surface of the outer cylinder. Since it is provided so as to be rotatable in between, the front end surface of the outer cylinder is prevented from being cut by the hole saw of the cylinder lock housed in the first housing of the eccentric lock, and the cylinder lock is prevented from being destructively illegally unlocked. Can do.

  According to the eccentric lock of the third aspect, since the pin made of hard steel material is embedded in the radial direction at the tip of the first housing, the cutting with the hole saw can be prevented by the pin, and the first housing It is possible to prevent destructive unauthorized unlocking such as making a cylindrical cut into the cylinder and removing the cylinder lock.

Hereinafter, preferred embodiments of an eccentric lock according to the present invention will be described in detail with reference to the drawings.
1 is a longitudinal sectional view of an eccentric lock according to the present invention, FIG. 2 is an exploded view of the eccentric lock shown in FIG. 1, FIG. 3 is an exploded perspective view of an eccentric rotation transmission mechanism, and FIG. It is the front view which looked at the eccentric lock shown from the left.
The eccentric lock 100 according to the present embodiment is an improved cylinder lock (hereinafter simply referred to as “cylinder lock”) 11 shown in FIGS. A first housing 13 that is a fixed cylinder that accommodates the cylinder lock 11, a second housing 15 that is coupled to the rear end side (right side in FIG. 1) of the first housing 13, and an eccentricity that is accommodated in the second housing 15. And a rotation transmission mechanism 17.

  The first housing 13 is formed in a cylindrical shape, and an exposed hole 21 for projecting the inner cylinder 19 of the cylinder lock 11 is formed on the front end side (left side in FIG. 1). A cylindrical decorative cylinder lower plate 23 is extrapolated to the front end portion of the first housing 13, and a decorative cylinder 25 is extrapolated to the outer periphery thereof. A decorative ring 27 is extrapolated to the outer periphery of the first housing 13, and the rear end of the decorative ring 27 is pressed against the surface 31 a of the door 31 by a coil spring 29 arranged between the decorative cylinder lower plate 23 and the rear end. The

  A lock box 33 is provided in the door 31, and the lock box 33 is provided with a rotation input member 35 that is an input portion of a locking / unlocking mechanism (not shown). The rotation center axis of the rotation input member 35 is eccentric from the center axis of the cylinder lock mounting hole 37 formed in the door 31. The cylinder lock 11 is attached to a door 31 provided with a lock box 33 having a rotation input member 35.

  The cylinder lock 11 is accommodated coaxially inside the first housing 13. In other words, the first housing 13 is externally arranged coaxially with the cylinder body. Therefore, the central axis of the first housing 13 and the rotation output member (for example, tail piece) 39 of the cylinder lock 11 are coaxial. In other words, the cylinder lock 11 having the rotation output member 39 that is eccentric is attached to the rotation input member 35.

  As shown in FIG. 3, the eccentric rotation transmission mechanism 17 includes a first connecting member 41 and a second connecting member 43. On the front end surface of the first connecting member 41, a groove-shaped notch 41a is formed that engages with the rotation output member 39 provided at the rear end of the inner cylinder 19 of the cylinder lock 11 so as not to be relatively rotatable. Further, a convex plate 43 a that protrudes from the rear end surface of the second connecting member 43 so as to be relatively non-rotatable with the rotation input member 35 of the lock box 33 is projected.

  On the facing surfaces of the first connecting member 41 and the second connecting member 43, a concave groove 41b and a convex strip 43b are formed. In the present embodiment, the groove 41b is formed in the first connecting member 41, and the ridge 43b is formed in the second connecting member 43, but this may be reversed. The first connecting member 41 and the second connecting member 43 are slid relative to each other in the longitudinal direction of the concave groove 41b and the convex strip 43b which are diametrical directions by fitting the concave groove 41b and the convex strip 43b to each other. It is connected so as to be non-rotatable.

  As shown in FIG. 1, the second housing 15 that accommodates the eccentric rotation transmission mechanism 17 is extrapolated to the outer periphery of the rear end side of the first housing 13. The first housing 13 and the outer cylinder 47 of the cylinder lock 11 are integrally fixed by knock pins 45 penetrating at three positions. The other end (rear end) of the second housing 15 is provided with an opening hole 15a coaxial with the rotation input member 35. The convex plate 43a of the second connecting member 43 protrudes from the opening hole 15a.

  As shown in FIG. 1, the cylinder lock 11 is fixed to the inside of the first housing 13 with the front portion of the inner cylinder 19 protruding from the outer cylinder 47 in the axial direction. The cylinder lock 11 allows the inner cylinder 19 to be rotated with respect to the outer cylinder 47 by inserting a key (not shown) into a key hole 49 opened on the front end surface of the inner cylinder 19. Then, the rotation output member 39 is rotated with the rotation of the inner cylinder 19. In the eccentric lock 100, an annular plate (slip ring) 51 that inserts the inner hole 51 a into the inner cylinder 19 that is made of hard steel and protrudes from the outer cylinder 47 and covers the front end surface of the outer cylinder 47 is connected to the cylinder lock 11. The first housing 13 is provided so as to be rotatable.

  Since the slip ring 51 made of hard steel covers the front end surface of the outer cylinder 47 and this slip ring 51 is rotatably held, a cylindrical cut is made on the front end surface of the outer cylinder 47 using a cylindrical hole saw. Even when trying to insert, the slip ring 51 made of hard steel rotates together with the hole saw, and the hole saw is prevented from cutting into the front end face of the outer cylinder. Thereby, destructive unauthorized unlocking such as destruction of the locking mechanism or extraction of the inner cylinder 19 due to the outer cylinder 47 being cut by the blade portion of the hole saw is prevented.

  As shown in FIGS. 1, 2, and 4, a pin 53 made of a hard steel material is embedded in the distal end of the first housing 13 in the radial direction. In the present embodiment, a pair of pins 53 and 53 are embedded in the diameter direction across the keyhole 49. As described above, the pin 53 made of hard steel material is embedded in the distal end of the first housing 13 in the radial direction, so that a cylindrical notch is formed in the front end surface of the first housing 13 using a cylindrical hole saw. However, when the predetermined cut is made, the blade portion of the hole saw hits the pin 53, and the pin 53 prevents the hole saw from being cut further, and this also causes the first housing 13 to have a cylindrical shape. Destructive unauthorized unlocking such as cutting and removing the cylinder lock 11 becomes difficult.

FIG. 5 is a longitudinal sectional view showing a state of insertion of a fixing screw for fixing the eccentric lock shown in FIG. 1, and FIG. 6 is a rear view of the back of the eccentric lock from the door hole side.
To assemble the eccentric lock 100, first, the pins 53 and 53, the decorative cylinder lower plate 23, and the decorative cylinder 25 are assembled to the first housing 13. Next, the slip ring 51 and the cylinder lock 11 are assembled in the first housing 13. Thereafter, the coil spring 29 and the decorative ring 27 are extrapolated on the outer periphery of the first housing 13. Next, the first connecting member 41 is assembled so as to coincide with the rotation output member 39 of the cylinder lock 11 incorporated in the first housing 13, and then the protrusion 43 b is aligned with the concave groove 41 b of the first connecting member 41. The second connecting member 43 is incorporated. Finally, the second housing 15 is fitted to the first housing 13, and the second housing 15, the first housing 13, and the cylinder lock 11 are integrally fixed by the knock pin 45 inserted from the outer periphery of the second housing 15.

  As shown in FIG. 5, the eccentric lock 100 assembled in this way is inserted into the cylinder lock mounting hole 37 of the door 31 at the rear end portion of the second housing 15. Accordingly, the convex plate 43 a of the second connecting member 43 protruding from the opening hole 15 a of the second housing 15 is fitted into the groove portion 35 a of the rotation input member 35. Thereby, the rotation output member 39 of the cylinder lock 11 is connected to the rotation input member 35 of the lock box 33 via the eccentric rotation transmission mechanism 17. As shown in FIG. 6, a cylinder lock fixing pin 55 is inserted from the mouth of the door 31, and the cylinder lock fixing pin 55 is inserted into a fixing hole 57 provided in the rear end portion of the second housing 15. The eccentric lock 100 and the lock box 33 are fixed so as not to be detached. In addition, a pair of fixing screws 61, 61 are inserted through the lock box 33 from, for example, a thumb turn mounting hole 59 on the indoor side of the door 31, and the fixing screws 61, 61 are on both sides of the second housing 15 shown in FIG. The lock box 33 and the eccentric lock 100 are more firmly fixed by screwing into the fixing screw holes 63 and 63 provided in the portion.

FIG. 7 is an operation explanatory view showing the situation at the time of rotation transmission of the eccentric rotation transmission mechanism in (a), (b) and (c).
In the eccentric lock 100, as shown in FIG. 7A, the rotation output member 39 of the cylinder lock 11 is eccentric with the rotation input member 35 of the lock box 33, but FIG. As shown in FIG. 7, when the rotation output member 39 is rotated, the first connecting member 41 that has become relatively unrotatable is rotated counterclockwise as shown in FIG. The formed second connecting member 43 is also rotated counterclockwise.

  At this time, the eccentricity of the rotating shaft is absorbed by the relative movement of the first connecting member 41 and the second connecting member 43 in the diametrical direction from the rotation output member 39 located at the eccentric position. The turning force is transmitted to the rotation input member 35.

  Therefore, according to the eccentric lock 100, the cylinder lock 11 is accommodated in the first housing 13, and the second housing 15 having the opening hole 15a coaxial with the rotation input member 35 is connected to the first housing 13. Since the eccentric rotation transmission mechanism 17 for connecting the rotation output member 39 and the rotation input member 35 is provided in the second housing 15, the rotation output rotated by the locking / unlocking operation of the cylinder lock 11. The turning force from the member 39 can be transmitted to the rotation input member 35 of the eccentric lock box 33 via the eccentric rotation transmission mechanism 17. That is, the cylinder lock 11 can be attached to the rotation input member 35 of the lock box 33 so as to be eccentric. As a result, even if the door 31 has the cylinder lock mounting hole 37 formed at an eccentric position with respect to the rotation input member 35 of the lock box 33, the existing cylinder lock mounting hole 37 is used to prevent crime. It becomes possible to replace and attach the highly reliable cylinder lock 11. The cylinder lock fixing pin 55 and the fixing screws 61 and 61 are members for fixing the existing cylinder lock before replacement, and can be used for attaching a new cylinder lock 11 to be replaced. It has become.

It is a longitudinal cross-sectional view of the eccentric lock which concerns on this invention. It is an exploded view of the eccentric lock shown in FIG. It is a disassembled perspective view of an eccentric rotation transmission mechanism. It is the front view which looked at the eccentric lock shown in FIG. 1 from the left. It is a longitudinal cross-sectional view showing the insertion condition of the fixing screw which fixes the eccentric lock shown in FIG. It is the rear view which looked at the back of the eccentric lock from the door hole side. It is operation | movement explanatory drawing which represented the condition at the time of the rotation transmission of an eccentric rotation transmission mechanism to (a) (b) (c).

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Cylinder lock 13 ... 1st housing 15 ... 2nd housing 15a ... Opening hole 17 ... Eccentric rotation transmission mechanism 19 ... Inner cylinder 31 ... Door 33 ... Lock box 35 ... Rotation input member 39 ... Rotation output member 41 ... first connecting member 41b ... concave groove 43 ... second connecting member 43b ... ridge 47 ... outer tube 49 ... key hole 51 ... annular plate (slip ring)
51a ... Inner hole 53 ... Pin made of hard steel 100 ... Eccentric lock

Claims (3)

An eccentric lock provided with a cylinder lock attached to a door provided with a lock box having a rotation input member, wherein the rotation output member is eccentric with respect to the rotation input member,
A first housing coaxially inserted into the cylinder lock;
A second housing connected to one end of the first housing and containing the rotation output member inward and having an opening hole coaxial with the rotation input member at the other end;
An eccentric rotation transmission mechanism that is rotatably installed in the second housing and transmits the rotational force from the rotation output member to the rotation input member;
The eccentric rotation transmission mechanism is
A first connecting member for connecting one end to the rotation output member so as not to be relatively rotatable;
A second connecting member for connecting the other end to the rotation input member so as not to be relatively rotatable;
The first connecting member and the second connecting member are connected to each other so that a concave groove and a ridge formed in the diametrical direction are fitted to each other so as to be relatively movable in the diametrical direction and relatively unrotatable. Eccentric tablet. The cylinder lock in which the front portion of the inner cylinder protrudes in the axial direction from the outer cylinder is fixed to the inside of the first housing, and the inner cylinder is inserted into the key hole opened in the front end surface of the inner cylinder by inserting the key The eccentric lock according to claim 1, wherein the eccentric lock is rotatable with respect to the outer cylinder.
An annular plate made of a hard steel material, with an inner hole inserted into the inner cylinder protruding from the outer cylinder and covering the front end surface of the outer cylinder, is provided between the cylinder lock and the first housing so as to be rotatable. An eccentric tablet characterized by that.   The eccentric lock according to claim 1 or 2, wherein a pin made of a hard steel material is embedded in the distal end of the first housing in a radial direction.

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