JP5064054B2 - Cylinder lock - Google Patents

Description

  The present invention relates to a cylinder lock.

  As a cylinder lock whose unlocking code is variable, the one described in Patent Document 1 is known. In this conventional example, the cylinder lock has an intermediate cylinder (inner case) interposed between an outer cylinder (housing) and an inner cylinder (plug), and a plurality of cylinder locks are formed in holes extending through the inner case and the plug to reach the housing. A pin-shaped tumbler is inserted.

  The tumbler regulates the rotation of the plug by being positioned at the rotation boundary between the housing and the inner case and between the inner case and the plug, and when an unlocking key having a genuine unlocking cord forming recess is inserted, The boundary coincides with the rotation boundary between the housing and the inner case or between the inner case and the plug, and the plug can be rotated.

When the plug is rotated by a predetermined angle using the unlocking key that enables rotation at the boundary between the housing and the inner case from this state, the connecting pin pressed against the outer periphery of the inner case rotates between the plug and the inner case. It becomes impossible to use an unlocking key that moves to a position where the boundary is closed and then rotates the plug using the rotational boundary.
JP 2006-322244 A

  However, since the conventional example described above includes many tumblers that are not used to open and close the rotation boundary after the code is changed, there is a disadvantage that the number of parts increases and the structure becomes complicated.

  The present invention has been made to eliminate the above-described drawbacks, and an object of the present invention is to provide a cylinder lock capable of changing the unlocking code with a simple structure. Another object of the present invention is to provide a cylinder lock set using the cylinder lock.

  The cylinder lock is formed by inserting the inner case 2 and the plug 5 into the housing 1. The inner case 2 is formed by arranging a plurality of divided cases 6-1, 6-2,... In the axial length direction of the plug 5, and an appropriate number of divided cases 6, that is, all or a part is relative to the housing 1. Can be idle. The split case 6 that can freely rotate can be fixed to the housing 1 by operating the rotation stopper 7 to stop rotating. The relationship between the split case 6 and the plug 5 in which the idle state has been eliminated is well known. The plug 5 can be rotated with respect to the inner case 2 only when the unlocking key 4 having the same structure as the cylinder lock and having the genuine unlocking cord forming recess 3 is inserted.

  Therefore, in the present invention, in a state where all the split cases 6 are free to rotate, rotation with the boundary between the split case 6 and the housing 1 as the rotation boundary is possible even if rotation of the plug 5 with respect to the split case 6 is prohibited. Therefore, the plug 5 can be rotated by any unlocking key 4 used.

  On the other hand, if the appropriate number of split cases 6 are disabled from idling, the split case 6 functions as a rotation restricting member and the rotation boundary between the split case 6 and the plug 5 is opened at the corresponding portion. Only the plug 5 can be rotated. As a result, it is possible to change the unlocking code by changing the split case 6 to be idle controlled.

  The idling stopper 7 can be configured to perform idling stop operation by manual operation to an appropriate operation unit disposed at a position where it cannot be operated from the outside while being attached to the lock target. 6 is configured so that the idle rotation between the housing 1 and the split case 6 is restricted by the idling operation with respect to the housing 1 and the split case 6 is restricted. Will improve.

  In this case, the idling stopper 7 can be urged toward the split case 6 and held in the housing 1. The split case 6 is inserted between the idle stopper 7 and the peripheral wall of the plug 5, and an interposed portion 8 is inserted to restrict the movement of the idle stopper 7 to the split case 6 side. A housing recess 9 is formed.

  When the plug 5 is idled by a predetermined angle with respect to the split case 6, the interposition part 8 urged toward the plug 5 by the idling stopper 7 falls into the accommodating recess 9 of the plug 5. The slipping stopper 7 moves to the plug 5 side because the slipping stopper 7 moves to the plug 5 side because one end is positioned at the rotation boundary between the split case 6 and the housing 1 and the relative rotation between the split case 6 and the housing 1 is allowed. Thereafter, the idling of the split case 6 is restricted.

  According to the present invention, the unlocking cord forming recess can be changed with a simple structure.

  As shown in FIGS. 1 and 2, the cylinder lock includes an inner case 2 inserted into the housing 1 and a plug 5 inserted into the inner case 2.

  The plug 5 is formed with a groove-like key insertion passage 11 in the central portion through which a plurality of pin-shaped tumblers 5 a are inserted with one end facing the key insertion passage 11. As shown in FIG. 2, the tumblers 5a are arranged in two rows at orthogonal positions.

  The inner case 2 through which the plug 5 is inserted is formed in a cylindrical shape by holding a plurality of drive pins 2 a that can face the tumbler 5 a in the plug 5. The drive pin 2a is urged toward the center of the plug 5 by the compression spring 2b, and pushes one end of the tumbler 5a into the key insertion passage 11.

  In this state, the boundary between the tumbler 5a and the drive pin 2a is located in the plug 5, closes the rotational boundary between the inner case 2 and the plug 5, and the relative rotation of the plug 5 with respect to the inner case 2 is restricted. .

  FIGS. 3A to 3D show an unlock key 4 used for this cylinder lock. The unlocking key 4 is formed by providing an unlocking cord forming recess 3 in a plate-like portion 4 a that can be inserted into the key insertion passage 11 of the plug 5. The unlocking cord forming recess 3 is formed at a position that matches the protruding position of the tumbler 5a when inserted into the key insertion passage 11 of the plug 5, and when the depth dimension is appropriate as shown in FIG. The boundary between 5a and the drive pin 2a is positioned at the rotation boundary between the inner case 2 and the plug 5, and the inner case 2 and the plug 5 can be rotated relative to each other.

  For ease of explanation, in FIG. 3, the unlocking key 4 shows that the insertion posture into the key insertion passage 11 is limited to one direction. By forming it at a point-symmetrical position with respect to the center of the cross section shown in 3 (b), it can be used in an inverted posture.

  As shown in FIG. 1, the inner case 2 is formed by arranging two divided cases 6 in the longitudinal direction of the plug 5. Each split case 6 has a cylindrical shape and is freely inserted into a circular hollow portion of the housing 1. The split case 6-1 in the front of the two split cases 6 (hereinafter, unlocked to the plug 5). The insertion end side (right side in FIG. 1) of the key 4 is “front”. The connection pin 15 is used to fix the key 4 to the housing 1.

  As shown in FIG. 2, the rear split case 6-2 has a communication hole 6a formed in a radial shape from the center of rotation of the plug 5 so as to penetrate therethrough, and the interposition part 8 is inserted. An accommodation recess 9 is formed which communicates with the communication hole 6a when rotated relative to the split case 6 by a predetermined angle. The intervention part 8 is configured by laminating a first intervention object 8a disposed facing the plug 5 and a second intervention object 8b located on the housing 1 side in the radial direction. In the state where the individual 8 a is in contact with the outer peripheral wall of the plug 5, the front end of the second interposed object 8 b on the housing 1 side is located at the rotation boundary between the housing 1 and the divided case 6. In addition, as shown in FIG. 7C, the accommodating recess 9 on the plug 5 side is configured such that one end of the first interstitial body 8 a is connected to the plug 5 and the split case 6 when the first interstitial body 8 a is fitted. It is formed at a depth located at the rotation boundary.

  The first and second intervening individuals 8b are appropriately determined on the condition that the above-described conditions are satisfied. In this embodiment, the first intervening individual 8a is plugged as shown in FIG. 6 (c). 5, and when it comes into contact with the inner peripheral wall of the split case 6 by falling into the receiving recess 9 of the plug 5 as shown in FIG. The plug 5 and the split case 6 serving as the boundary are formed in a ball shape so that the rotation is smooth. Further, the second interposed object 8b has dimensions for positioning the end portion on the housing 1 side of the interposed part 8 at the rotation boundary between the housing 1 and the divided case 6 when the ball-shaped first interposed object 8a is used. In consideration of easy adjustment, it is formed into a pin shape.

  Further, FIG. 1 shows the case where the intervention unit 8 is formed by the first and second intervention individuals 8a and 8b, but it may be constituted by one or two or more individuals.

  An idling stopper 7 is attached to the housing 1 in one-to-one correspondence with the interposition part 8. As shown in FIGS. 1A and 2A, the idling stopper 7 is formed in a pin shape and is urged toward the center of the plug 5 by a compression spring 7a.

  Further, a rotation restricting portion 12 is provided at the boundary between the rear divided case 6-2 and the housing 1. The rotation restricting portion 12 includes a headed pin 16 attached to a through hole 6 b opened in the split case 6 and a fitting step portion 1 a formed in the housing 1. The head 16 a of the headed pin 16 is formed in a hemispherical shape, and is arranged with the tip of the shaft portion 16 b facing the key insertion passage 11 of the plug 5.

  As shown in FIGS. 1A and 2A, the headed pin 16 is formed to be slightly longer than the peripheral wall thickness of the split case 6, and the diameter of the fitting step portion 1a is as shown in FIG. Furthermore, when the unlocking key 4 is inserted into the key insertion passage 11 of the plug 5, the head 16 a is accommodated so that the insertion path for the unlocking key 4 can be secured.

  The cylinder lock configured as described above is used together with a plurality of unlock keys 4 shown in FIG. 3 to configure a cylinder lock set. In this embodiment, the unlock key 4 includes a long unlock key 4 (secondary unlock key 4-2) shown in FIGS. 3A to 3E, and FIGS. 2 types of short unlocking keys 4 (primary unlocking keys 4-1) shown in FIG.

  As shown in FIG. 6, the secondary unlocking key 4-2 has a length dimension substantially equal to the length of the key insertion passage 11 of the plug 5, and is unlocked corresponding to all the tumblers 5a in the plug 5. A cord forming recess 3 is provided. On the other hand, as shown in FIG. 4, the primary unlocking key 4-1 has only the unlocking cord forming recess 3 for the tumbler 5a arranged in the region of the plug 5 corresponding to the front split case 6-1. It can be formed and has a length dimension that does not interfere with the tumbler 5a in the rear divided case 6 region. The primary and secondary unlock keys 1-1 and 4-2 are used as a set, and the unlock code forming recess 3 of the primary unlock key 4-1 is a corresponding area of the secondary unlock key 4-2. It matches perfectly.

  Next, the usage method of the above cylinder lock set is demonstrated with operation | movement of each part. First, as described above, in the cylinder lock, the idling of the plug 5 with respect to each divided case 6 is restricted by the tumbler 5a, and the front divided case 6-1 is fixed with respect to the housing 1, and the rear Only the split case 6-2 can idle with respect to the housing 1. Under this condition, even if an unlocking key 4 that does not match all the unlocking cord forming recesses 3 is inserted, the plug 5 is rotated because the front split case 6-1 is fixed to the housing 1. It cannot be unlocked by operation.

  Next, as shown in FIG. 4, when the primary unlocking key 4-1 having the unlocking cord forming recess 3 that matches the tumbler 5 a of the plug 5 region corresponding to the front split case 6-1 is inserted, As shown in FIG. 5A, the tumbler 5a is driven to an appropriate position by the primary unlocking key 4-1, and the plug 5 can be rotated with respect to the front divided case 6-1. Further, since the rear split case 6-2 that cannot be idled with respect to the plug 5 is free to rotate with respect to the housing 1, when the primary unlocking key 4-1 is rotated, the front split case 6-2 6-1, the boundary between the plug 5 and the split case 6 is shown as shown in FIG. 5B, and the split case 6 is shown in the rear split case 6-2 as shown in FIG. The rotary operation to the plug 5 using the primary unlocking key 4-1 can be performed by idling with the boundary with the housing 1 as a rotational boundary.

  The operation using the primary unlocking key 4-1 can be used, for example, for unlocking and unlocking by a construction worker in a house under construction. The primary unlocking key 4-1 can be used for secondary unlocking. Using the lock key 4-2 for a permanent operation without changing the cylinder lock, that is, the unlocking operation with the primary unlocking key 4-1 is impossible and the number of key differences is large. Can be operated.

  As described above, the secondary unlocking key 4-2 has a length to reach the rear split case 6-2 and the unlocking code forming recess 3, and when this is inserted, FIG. ), All the tumblers 5a are moved to appropriate positions, and at the same time, the headed pins 16 are pushed by the unlocking key 4 and moved toward the housing 1. The rear split case 6-2 and the housing 1 are connected in the rotational direction by the movement of the headed pin 16. In this state, when a rotational operation force is applied to the secondary unlocking key 4-2, the plug 5 is moved forward and backward. The boundary between the split case 6-2 and the plug 5 is rotated as a rotation boundary.

  As shown in FIG. 7 (a), when the plug 5 is rotated by a predetermined angle and the first interposition member 8a of the interposition part 8 faces the accommodation recess 9 of the plug 5, it is pushed out by the idling stopper 7 and is accommodated. 9 is fitted. The idling stopper 7 advances to the boundary between the divided case 6 and the housing 1 due to the movement of the first intervention member 8a and closes the boundary. Since the first intervening body 8a does not return to the original position once fitted into the receiving recess 9, when the plug 5 is returned to the original position as shown in FIG. Case 6 is connected to housing 1.

  In this state, the configuration is the same as that of a normal cylinder lock, and all the unlocking cord forming recesses 3 are in the proper unlocking key 4, that is, the plug 5 is unlocked only by the secondary unlocking key 4-2. It becomes possible. As a result, it is possible to completely eliminate the possibility of the unlocking operation by the primary unlocking key 4-1 replication or the like.

  In the above, the cylinder lock set has been described by taking the case where the inner case 2 is constituted by the two divided cases 6 and the two types of unlocking keys 4 are selectively used. A cylinder lock set using an unlock key set including unlock keys 4-1 to 4-2, 4-N up to the Nth order can be configured.

  FIG. 8 shows a modification of the idling stopper 7. Note that, in the following description of the modified examples, components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  In this modification, the idling stopper 7 is accommodated in the communication hole 6 a of the split case 6 and is urged toward the center of the plug 5 via the first push pin 17 attached to the housing 1. The tip of the idling stopper 7 on the plug 5 side is fitted in the receiving recess 9 of the plug 5 and has a conical shape so that a component force in the outer peripheral direction is generated by the rotation of the plug 5.

  In addition, the filler 10 that can fall into the housing recess 9 when the plug 5 rotates by a predetermined angle is pressed against the outer periphery of the split case 6 via the second push pin 18.

  When the plug 5 is not rotated, the boundary between the idle stopper 7 and the first push pin 17 coincides with the rotational boundary between the split case 6 and the housing 1, and the rotational boundary when the primary unlocking key 4-1 is used. I will provide a.

  When the secondary unlock key 4-2 is inserted and the plug 5 is rotated from this state, the idling stopper 7 resists the reaction force of the compression spring 17a by the outward component force generated at the tip of the cone. And the rotation boundary between the split case 6 and the housing 1 is closed. When the plug 5 is further rotated, as shown in FIG. 8 (b), the filler 10 in the communication hole 6 a falls into the accommodation recess 9 so as not to be restored. After that, even if the plug 5 is rotated to the original position, the idling stopper 7 cannot be fitted into the receiving recess 9, so that the closed state of the rotation boundary is maintained thereafter.

  FIG. 9 shows a modification of the rotation restricting portion 12. In this modification, the rotation restricting portion 12 is composed of three pin bodies 19 a, 19 b, 19 c aligned in a row in the radial direction from the rotation center of the plug 5, and the plug 5 is compressed by a compression spring accommodated in the housing 1. It is urged toward the center of. As shown in FIG. 9A, when the unlocking key 4 is not inserted into the key insertion passage 11 of the plug 5, one end of the pin body (first pin body 19 a) on the plug 5 side projects into the key insertion passage 11. At this time, the boundary between the intermediate pin body (second pin body 19 b) and the pin body on the housing 1 side (third pin body 19 c) is positioned at the rotational boundary between the divided case 6 and the housing 1. To do.

  When the secondary unlock key 4-2 is inserted from this state, the first pin body 19a is removed from the key insertion path 11 by the unlock key 4. As a result, the boundary between the second pin body 19b and the third pin body 19c deviates from the rotational boundary between the divided case 6 and the housing 1, and the rotational boundary between the divided case 6 and the housing 1 is closed to idle the divided case 6. To regulate. At the same time, the boundary between the first pin body 19a and the second pin body 19b moves to the rotation boundary between the plug 5 and the split case 6, so that the rotation boundary between the plug 5 and the split case 6 is opened. When the next unlock key 4-2 is inserted, only the plug 5 can be rotated with the boundary between the plug 5 and the split case 6 as the rotation boundary.

  FIG. 10 shows another modification of the rotation restricting portion 12. In this modification, the rotation restricting portion 12 includes a detection pin 14 whose tip protrudes into the key insertion passage 11 of the plug 5 and a pressure pin that is held in the housing 1 and is urged toward the center of the plug 5 by a compression spring 13a. It is composed of a body 13. As shown in FIG. 10A, the boundary between the detection pin 14 and the pressing body 13 is located at the rotational boundary between the housing 1 and the divided case 6-2 without inserting the secondary unlocking key 4-2. Provides a rotation boundary when the primary unlock key 4-1 is used.

  When the secondary unlocking key 4-2 is inserted from this state, the boundary between the pressing body 13 and the detection pin 14 deviates from the rotational boundary between the housing 1 and the divided case 6 as shown in FIG. This rotation boundary is closed.

It is a figure which shows this invention, (a) is sectional drawing which shows a cylinder lock, (b) is the 1B-1B sectional view taken on the line of (a). 2A is a cross-sectional view taken along line 2A-2A in FIG. 1, and FIG. 2B is a cross-sectional view taken along line 2B-2B in FIG. It is a figure which shows an unlocking key, (a) is a front view of a secondary unlocking key, (b) is the 3B-3B sectional view taken on the line of (a), (c) is a 3C direction arrow view of (a), (D) is a sectional view taken along line 3D-3D in (c), (e) is a sectional view taken along line 3E-3E in (a), (f) is a sectional view corresponding to (d) of the primary unlocking key, ( g) is a cross-sectional view corresponding to (e). It is a figure which shows operation by a primary unlock key, (a) is sectional drawing corresponding to FIG.1 (b), (b) is sectional drawing corresponding to Fig.1 (a). It is a figure which shows operation by a primary unlocking key, (a) is sectional drawing corresponding to FIG.2 (b), (b) is sectional drawing of the state which rotated the unlocking key from (a), (c) FIG. 3 is a cross-sectional view corresponding to FIG. It is a figure which shows operation by a secondary unlocking key, (a) is sectional drawing corresponding to Fig.4 (a), (b) is sectional drawing corresponding to Fig.4 (a), (c) is FIG.2 (a). Is a cross-sectional view corresponding to FIG. It is a figure which shows the idling elimination operation | movement of the division | segmentation case by a secondary unlocking key, (a) is a figure which shows the state which rotated the plug, (b) is sectional drawing of the front division | segmentation case part at that time, (c) FIG. 5 is a cross-sectional view showing a state where the plug is returned to the original position. FIG. 5 is a diagram showing a modified example of the idle stopper, where (a) is a cross-sectional view showing an initial state, (b) is a cross-sectional view showing a state rotated by a predetermined angle, and (c) is a state where the plug is returned to the original position. It is sectional drawing shown. It is a figure which shows the modification of a rotation control part, (a) is sectional drawing corresponding to Fig.1 (a), (b) is sectional drawing corresponding to FIG.1 (b). It is a figure which shows the other modification of a rotation control part, (a) is sectional drawing corresponding to FIG. 1 (a) in the state which inserted the primary unlocking key, (b) inserted the secondary unlocking key It is sectional drawing of a state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Inner case 3 Unlocking code formation recessed part 4 Unlocking key 4-1 Primary unlocking key 5 Plug 6 Split case 7 Idling stopper 8 Interposition part 9 Receiving recessed part 10 Filling body 11 Key insertion path 12 Rotation restricting part 13 Press Body 14 detection pin

Claims (7)

An inner case inserted into the housing;
A plug inserted into the inner case and idled with respect to the inner case by insertion of an unlocking key having a genuine unlocking code forming recess,
The inner case is formed by arranging a plurality of divided cases in the longitudinal direction of the plug, and an appropriate number of divided cases can be idled with respect to the housing, and the idling state can be eliminated by the idling stop operation to the idling stopper. And
A cylinder lock that enables a rotation operation to a plug using a different unlocking key in which the unlocking code forming concave portion corresponding to the split case capable of idling control is omitted and in which the split case can be idled. An inner case inserted into the housing;
A plug inserted into the inner case and idled with respect to the inner case by insertion of an unlocking key having a genuine unlocking code forming recess,
The inner case is formed by arranging a plurality of divided cases in the longitudinal direction of the plug, and an appropriate number of divided cases can be idled with respect to the housing, and the idling state can be eliminated by the idling stop operation to the idling stopper. And
Rotation operation to the plug using the unlocking key that lacks the unlocking code forming recess corresponding to the split case capable of idling control enables the split case to be idled,
And said idle stopper Resid Linda tablets to regulate idling the housing and the separate casing to move in the rotational boundary between the housing and the separate case by idling operation to split case of the plug. The idling stopper is urged toward the split case and is held by the housing, and the split case is interposed between the idling stopper and the peripheral wall of the plug to restrict movement of the idling stopper to the split case. The intervention part is inserted,
The plug is formed with a receiving recess for receiving all or a part of the interposition part so as to be able to idle with respect to the divided case when the idling is idled with respect to the divided case and moving the idling stopper to the idling restriction position. The cylinder lock according to claim 2. The idling stopper is urged toward the center of the plug and is held in the split case with one end positioned at the rotational boundary with the housing.
On the outer periphery of the plug, an accommodation recess is formed in which the other end of the idling stopper is detachably fitted when the plug and the split case are rotated relative to each other.
3. The cylinder lock according to claim 2, wherein the split case urges and holds the filler that fits in the receiving recess when the plug rotates by a predetermined angle toward the center of the plug. An inner case inserted into the housing;
A plug inserted into the inner case and idled with respect to the inner case by insertion of an unlocking key having a genuine unlocking code forming recess,
The inner case is formed by arranging a plurality of divided cases in the longitudinal direction of the plug, and an appropriate number of divided cases can be idled with respect to the housing, and the idling state can be eliminated by the idling stop operation to the idling stopper. And
Enabling rotation operation to the plug using the primary unlocking key that lacks the unlocking code forming concave portion corresponding to the split case capable of idling control, with the split case being in an idling state,
A secondary unlocking key is provided with an unlocking code forming recess that is inserted into a key insertion passage formed in a plug and corresponds to the split case capable of idling control at the rotational boundary between the idling controllable split case and the housing. the split case and pushed to a position for closing the rotating boundary between the housing, the rotation regulating portion for regulating the idling of the split case is disposed Cie Linda tablets. The rotation restricting portion is provided with an urging force in the plug direction and is accommodated in the housing;
6. A detection pin housed in the split case, having one end pushed by the pressing body and the other end protruding into the key insertion path, and a detection pin whose boundary with the pressing body coincides with the rotation boundary with the housing in the protruding state. Cylinder lock as described. Split case disposed at the forefront of unlocking key insertion end side is idle incapable formed relative to the housing, claim 2 arranged to the (N-1) idle controllable split case behind 4 A cylinder lock according to any one of
A cylinder lock set comprising an unlock key set for rotating the plug of the cylinder lock,
The unlocking key set includes a primary unlocking key having a length that allows a plug operation to the non-spinning division case,
A cylinder lock set consisting of an appropriate number of N-order unlocking keys whose length sequentially increases with respect to the length of the split case with respect to the primary unlocking key.