JP2006336369A - Cylinder lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lock adjustable in length according to the thickness of a door. <P>SOLUTION: A torque transmission member 7 adjustable in length according to the thickness of a door 2 to be installed is provided between a thumb-turn 6 and a cylinder 5 having a keyhole 5a. The torque transmission member 7 has a first member 28 provided with a key 28b extending in the thickness direction of the door 2, and a second member 25 provided with a keyway 25c engaged with the key 28b. The key 28b is engaged with the keyway 25c to attain torque transmission between the thumb-turn 6 and a key 8, and the relative positions of the first member 28 and second member 25 can be changed within a torque transmittable range. A stopper 29 is provided for regulating the relative movement of the first member 28 and second member 25 in the thickness direction of the door to allow torque transmission between the first member 28 and second member 25 by the engagement of the key 28b and keyway 25c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cylinder lock.

For example, Patent Literatures 1 to 3 disclose conventional cylinder locks in which a thumb turn and a keyhole are coaxially arranged. These cylinder locks disclosed in Patent Documents 1 to 3 are all excellent in improving crime prevention.
JP 2005-36418 A JP 2004-353374 A Japanese Patent Laid-Open No. 11-200678

  By the way, the thickness of the door on which the cylinder lock is installed is not uniform, and naturally, the distance between the thumb turn and the cylinder provided with the keyhole also varies depending on the thickness of the door. The conventional cylinder locks disclosed in Patent Documents 1 to 3 cannot adjust the distance between the thumb turn and the keyhole according to the thickness of the door, and the cylinder lock according to the thickness of the door in advance. Standard products were prepared, and the optimum products were selected from the standard products as needed.

  For this reason, when there is no right standard product, various measures have been taken, such as selecting a cylinder lock that is one rank larger and providing a housing inside the door to cover the protruding part of the cylinder lock. It was.

  Then, this invention makes it the subject to provide the cylinder lock which can adjust length according to the thickness of the door of installation object.

  In order to solve the above-mentioned problem, the cylinder lock of the invention of claim 1 is a cylinder for performing unlocking operation or closing operation by transmitting torque between a thumb turn disposed inside the door and a key used outside the door. In the lock, a torque transmission member whose length can be adjusted according to the thickness of the door to be installed is provided between the thumb turn and the cylinder provided with the keyhole.

  According to a second aspect of the present invention, in the cylinder lock according to the first aspect of the present invention, the torque transmitting member is provided with a first member provided with a key extending in the thickness direction of the door, and a key groove engaged with the key. A second member, and torque transmission between the thumb turn and the key is enabled by engaging the key with the key groove, and the first member and the second member can transmit torque. The relative position of the two can be changed within the range.

  According to the invention of claim 3, in the cylinder lock of the invention of claim 2, the cross section of the key is a sector.

According to a fourth aspect of the invention, in the cylinder lock of the second or third aspect of the invention, the key and the key groove are engaged with each other so that torque can be transmitted between the first member and the second member. The stopper which controls the relative movement to the thickness direction of a door of the 1st member and the 2nd member was provided.
A compression spring is provided between the first member and the second member, and a force is applied in the direction in which the first member and the second member are separated from each other by the pressing force of the compression spring, and the compression spring is pushed according to the thickness of the door. The relative position between the first member and the second member may be adjusted against the pressure.

  In the invention of the cylinder lock of claim 1, since the torque transmission member whose length can be adjusted according to the thickness of the door to be installed is provided between the thumb turn and the cylinder provided with the key hole, It is not necessary to manufacture a plurality of standard products having different lengths in order to correspond to the thickness of the door, and the door can have various thicknesses with the same structure. Therefore, it is suitable for mass production and can reduce the manufacturing cost.

In the invention of claim 2, since the torque transmission member is provided with a first member provided with a key extending in the thickness direction of the door and a second member provided with a key groove engaging with the key, the key is By engaging the keyway, torque can be transmitted between the thumb turn and the key.
Moreover, since the relative position of the first member and the second member can be changed within a range in which torque transmission is possible, a torque transmission member having a simple structure can be provided.

  In the invention of claim 3, since the cross section of the key is fan-shaped, the key is not easily broken, excellent in durability, and torque transmission can be performed more reliably.

  In the invention of claim 4, the thickness of the door of the first member and the second member is such that the key and the key groove are engaged and torque transmission is possible between the first member and the second member. Since the stopper that restricts the relative movement in the direction is provided, when attaching the torque transmission member to the cylinder lock, the key does not come off from the key groove, and the workability is good. Torque transmission between the key and the key can be performed reliably.

  FIG. 1 is a sectional view of a cylinder lock 1 in which the present invention can be implemented. As shown in FIG. 1, the cylinder lock 1 includes an inner unit 3 disposed inside the door 2 (right side of the door 2 as viewed in FIG. 1) and an outer side of the door 2 (left side of the door 2 as viewed in FIG. 1). And an outer unit 4 disposed on the outside.

  The overall configuration of the cylinder lock 1 will be described with reference to FIG. 2 together with FIG. FIG. 2 is a cross-sectional view of the cylinder lock 1 in an exploded state. The outer unit 4 includes a housing 9. The housing 9 is provided with a hole 9a. A cylinder 5 having a key hole 5 a into which the key 8 shown in FIG. 1 is inserted is fixed to the housing 9, and the key hole 5 a is exposed to the outside of the outer unit 4 from the hole 9 a.

  Further, the outer unit 4 has a plurality of rods 10 (two in FIG. 1 and FIG. 2) that extend toward the door 2 and have a female screw 10 a at the tip. Book). The rod 10 may be firmly integrated with the housing 9 and may be integrally formed with the housing 9 or may be fixed to the housing 9 as a separate member by screwing or bonding. Further, on the end opposite to the end provided with the keyhole 5a of the cylinder 5 (the right end as viewed in FIGS. 1 and 2), a protrusion that rotates integrally with the key 8 inserted into the keyhole 5a. 5b is provided.

  As shown in FIG. 2, the door 2 is provided with a through hole 2 a and a through hole 2 b through which the rod 10 passes. The inner unit 3 disposed inside the door 2 includes a fixing member 11, a lock case 12, a thumb turn 6, a housing 13, and the like. A torque transmission member 7 is disposed between the cylinder 5 and the thumb turn 6.

  The fixing member 11 includes flange portions 16 a and 16 b that stand up with respect to the door 2, and a base portion 16 c that connects both flange portions and is in surface contact with the door 2. The base portion 16 c is provided with a hole 11 b corresponding to the through hole 2 b of the door 2. A screw 14 is inserted into the hole 11b. The screw 14 is screwed into the female screw 10a of the rod 10 of the outer unit 4 through the hole 11b and the through hole 2b, and the outer unit 4 and the fixing member 11 are connected and fixed with the door 2 interposed therebetween.

  Further, a hole 11 a is provided in the base portion 16 c of the fixing member 11. The hole 11a coincides with the through hole 2a of the door 2, and a torque transmission member 7 described later in detail is disposed in the hole 11a and the through hole 2a. Further, the flange portions 16a and 16b of the fixing member 11 are provided with screw holes 11c. A screw 15 described later is screwed into the screw hole 11c.

  The lock case 12 includes a dead bolt 18 and a latch 19. The thumb case 6 is installed in the lock case 12. The thumb turn 6 is provided with a hole 6 a that engages with the torque transmission member 7. Although the configuration of the torque transmission member 7 will be described later, the torque transmission between the thumb turn 6 and the key 8 (FIG. 1) inserted into the cylinder 5 is enabled by engaging with the hole 6a. The dead bolt 18 is accommodated and protruded by rotating the key 8 or the thumb turn 6.

  Further, the lock case 12 is provided with a through hole 12a. A screw 20 is inserted into the through hole 12a. The housing 13 is provided with a protrusion 13 a having a female screw 21 that is screwed with the screw 20. When the screw 20 and the female screw 21 are screwed in the through hole 12a, the lock case 12 and the housing 13 are integrated.

  Holes 13b and 13c are provided in the upper wall and the lower wall of the housing 13, respectively. The holes 13 b and 13 c correspond to the screw holes 11 c of the fixing member 11. A gap is formed between the lock case 12 and the upper wall of the housing 13 so that the flange portion 16a of the fixing member 11 can be inserted, and between the lock case 12 and the lower wall of the housing 13, a flange of the fixing member 11 is formed. A gap is formed so that the portion 16b enters.

  Then, the lock case 12 and the housing 13 are integrated, the holes 13b and 13c and the screw hole 11c of the fixing member 11 are aligned, and the tip of the screw 15 abuts against and presses the lock case 12. When the screw 15 is screwed into the screw hole 11c, the lock case 12 and the housing 13 are fixed to the fixing member 11, and the assembly of the inner unit 3 is completed.

  Next, the torque transmission member 7 will be described. FIG. 3 is an exploded perspective view of the torque transmission member 7, and FIGS. 4A to 4F are cross-sectional views illustrating a procedure for assembling the torque transmission member 7. As shown in FIG. 3, the torque transmission member 7 includes a cylinder engaging member 25 (second member provided with a key groove), a housing 26, a spring 27, a sliding member 28 (first member provided with a key), and the like. Has been.

  The cylinder engagement member 25 includes an engagement hole 25a that engages with the protrusion 5b (FIG. 2) of the cylinder 5, a small diameter portion 25b, a notch 25c, and a spring accommodation hole 25d (FIG. 4 (a)). It has. Torque can be transmitted between the cylinder engaging member 25 and the cylinder 5 by engaging the engaging hole 25a with the protrusion 5b.

  As shown in FIG. 4B, the spring 27 is accommodated in the spring accommodating hole 25d. One end of the spring 27 (left end as viewed in FIG. 4B) is in contact with the bottom of the spring accommodating hole 25d, and the other end (right end as viewed in FIG. 4C) is the small-diameter protruding portion of the sliding member 28. 28a abuts. The small-diameter protruding portion 28a of the sliding member 28 is provided with a fan-shaped key 28b from the middle. The right end of the key 28b is integrally formed with the flange portion 28d. When the key 28 b is engaged with the notch 25 c of the cylinder engaging member 25, torque can be transmitted between the cylinder engaging member 25 and the sliding member 28.

  The sliding member 28 is provided with a thumb turn engaging portion 28 c that engages with the hole 6 a (FIG. 2) of the thumb turn 6. The thumb turn engaging portion 28 c is formed to extend from the flange portion 28 d to the opposite side of the key 28 b, and engages with the hole 6 a of the thumb turn 6, so that the thumb turn between the slide member 28 and the thumb turn 6 is formed. Torque can be transmitted.

  The housing 26 is provided with a hole 26 a for accommodating the sliding member 28 and the cylinder engaging member 25. A step 26e is formed at the right end of the hole 26a. As shown in FIGS. 4D and 4E, the flange portion 28d of the sliding member 28 contacts the step 26e, and the sliding member 28 thumb-turn engagement portions 28 c protrude from the small-diameter hole 26 f at the right end of the housing 26.

  A slit 26 b is provided on the cylindrical side wall of the housing 26. A stopper 29 can be inserted from the slit 26b. The stopper 29 is in the state shown in FIG. 4 (f) rotated 90 degrees about the shaft 29a from the state shown in FIG. 4 (e), and the small diameter portion 25b of the cylinder engaging member 25 housed in the housing 26 is shown. Engaging with the outer periphery, the range of movement of the cylinder engaging member 25 and the sliding member 28 is limited. It is preferable that the stopper 29 has elasticity in the radial direction because it is easy to engage with the small diameter portion 25 b of the cylinder engaging member 25.

  Further, the housing 26 is provided with a flange portion 32 having a hole 31. Returning to FIG. 2, when the lock case 12 is viewed, the lock case 12 has a hole 35. When the torque transmission member 7 is installed in the lock case 12, the hole 31 coincides with the hole 35, and the torque transmission member 7 is fixed to the lock case 12 by penetrating them with the pin 30 (FIG. 3). ing.

  A female screw 23 is provided in the lock case 12, and the screw 22 shown in FIG. 1 is screwed into the female screw 23. The plate 17 is fixed to the lock case 12, and the hole 17 is closed by the plate 17. 30 will not fall out.

  The behavior of the torque transmission member 7 will be described with reference to FIGS. FIG. 5A is a perspective view of the torque transmission member 7 with the cylinder engaging member 25 protruding from the housing 26 to the maximum, and FIG. 5B corresponds to the state of FIG. It is sectional drawing of the torque transmission member 7 to do. 6A is a perspective view of the torque transmission member 7 in a state where the cylinder engaging member 25 is accommodated in the housing 26 to the maximum, and FIG. 6B is a perspective view of FIG. It is sectional drawing of the torque transmission member 7 corresponding to this state.

  As shown in FIG. 5B, when the cylinder engaging member 25 protrudes from the housing 26 to the maximum extent, the protruding amount of the cylinder engaging member 25 with respect to the housing 26 is D1. At that time, the right surface of the stopper 29 contacts the step 25e of the cylinder engaging member 25, and the left surface of the stopper 29 contacts the edge 26c of the slit 26b of the housing 26. Therefore, the stopper 29 is sandwiched between the step 25e of the cylinder engaging member 25 and the edge 26c of the slit 26b of the housing 26.

  On the other hand, when the cylinder engaging member 25 is accommodated in the housing 26 to the maximum against the elastic force of the spring 27, the protruding amount of the cylinder engaging member 25 with respect to the housing 26 is D2. At that time, the stopper 29 becomes free between the slits 26 b, and the end surface 25 f of the notch 25 c of the cylinder engaging member 25 comes into contact with the end surface 28 e of the sliding member 28.

  Therefore, when this torque transmission member 7 is used, the influence of the thickness of the door 2 (FIG. 2) can be absorbed within the range of the difference between the protrusion amounts D1 and D2. For example, if the projection amount of the cylinder engaging member 25 is D2 (the state shown in FIG. 6) corresponds to the thickness t of the door 2 shown in FIG. It can be used for doors up to t + (D1-D2)}.

  The notch 25c of the cylinder engaging member 25 and the key 28b of the sliding member 28 are engaged from the state shown in FIGS. 5 (a) and 5 (b) to the state shown in FIGS. 6 (a) and 6 (b). Thus, torque can be reliably transmitted between the cylinder 5 and the thumb turn 6 shown in FIG.

It is sectional drawing of the cylinder lock which can implement this invention. It is an exploded view of the cylinder lock of FIG. It is a disassembled perspective view of a torque transmission member. It is sectional drawing which shows the procedure of an assembly of a torque transmission member. (A) is a perspective view of the torque transmission member in which the cylinder engaging member protrudes from the housing to the maximum extent, and (b) is a sectional view of the torque transmission member corresponding to the state of (a). . (A) is a perspective view of the torque transmission member in a state where the cylinder engaging member is accommodated in the housing to the maximum extent, and (b) is a sectional view of the torque transmission member corresponding to the state of (a). It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylinder lock 2 Door 3 Inner unit 4 Outer unit 5 Cylinder 6 Thumb turn 7 Torque transmission member 12 Lock case 25 Cylinder engagement member 25c Notch part (key groove)
28 Sliding member 28b Key 29 Stopper

Claims (4)

In the cylinder lock that performs the unlocking operation or the unlocking operation by transmitting the torque of the thumb turn disposed inside the door and the key used outside the door,
A cylinder lock characterized in that a torque transmission member whose length can be adjusted according to the thickness of a door to be installed is provided between the thumb turn and a cylinder having a key hole. The torque transmission member includes a first member provided with a key extending in the thickness direction of the door, and a second member provided with a key groove that engages with the key, and the key engages with the key groove. Torque transmission between the thumb turn and the key is possible,
2. The cylinder lock according to claim 1, wherein the first member and the second member can change a relative position of the first member and the second member within a range in which torque can be transmitted.   The cylinder lock according to claim 2, wherein the cross section of the key has a sector shape.   Relative movement of the first member and the second member in the thickness direction of the door so that torque can be transmitted between the first member and the second member by engaging the key and the key groove. 4. A cylinder lock according to claim 2, further comprising a stopper for regulating

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