JP3035166U - Cylinder lock and device equipped with the same - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To replace a cylinder lock easily and at low cost. A pullout lock groove is formed in an outer cylinder, and a pullout lock groove is formed in a casing that covers the outer cylinder.
A leaf spring 40 that fits in 6 is provided. Inner cylinder 10
The flange 13 has a notch 14 which is a part of the opening 12 of the key insertion hole 11. In the outer cylinder 20,
When the inner cylinder 10 rotates, the notch portion 14 of the inner cylinder flange 13
The pin insertion hole 23 is formed from the exposed portion to the position where the leaf spring 40 is exposed. When replacing the cylinder lock, the replacement key 60 is inserted into the key insertion hole 11 and the inner cylinder 10 is rotated to expose the entrance 24 of the pin insertion hole 23. Subsequently, the replacement pin 60 is inserted through the pin insertion hole 23, and the leaf spring 40 is removed from the pullout lock groove 26. Then, from the casing 30 to the inner cylinder 10 and the outer cylinder 20.
Pull out.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention comprises an inner cylinder having a key insertion hole into which a key is inserted, an outer cylinder rotatably covering the outer circumference of the inner cylinder, and a casing covering the outer circumference of the outer cylinder. The present invention relates to a cylinder lock and a device equipped with the cylinder lock, and particularly to a cylinder lock suitable for replacement.

[0002]

[Prior art]

 Cylinder locks are widely used in front doors of general houses, lockers for rental in various facilities, post office boxes, safe deposit boxes, etc. Users of this cylinder lock often carry a spare key in case the key of the cylinder lock is lost.

By the way, for example, if a key is lost in a rental locker at a golf course or various sports clubs, even if a copy key is made from a spare key, it is not preferable from the viewpoint of crime prevention. In other words, a third party may pick up the lost key and misuse this key. Therefore, when the key is lost, it is often requested to replace the cylinder lock. In this case, it is common to replace the entire cylinder lock.

[0004]

[Problems to be solved by the device]

 However, in such a conventional technique, replacement of the entire cylinder lock requires relatively specialized skill, and a specialized contractor must be commissioned, and even a specialized contractor is troublesome to work. However, there is a problem that it takes work time. Furthermore, there is a problem in that it is necessary to purchase a new cylinder lock and, as mentioned above, a specialized contractor must be requested, which increases the cost of replacing the cylinder lock.

The present invention has been made in view of the above-mentioned conventional problems, and even an amateur can perform the replacement work easily and in a short time, and at the same time, the cost required for the replacement can be suppressed. An object of the present invention is to provide a lock and a cylinder lock device equipped with the lock.

[0006]

[Means for Solving the Problems]

 A cylinder lock for achieving the above-mentioned object includes: a pull-out lock groove formed in one of an outer circumference of an outer cylinder that rotatably covers the inner cylinder and an inner circumference of a casing that covers the outer circumference of the outer cylinder; A pull-out lock member having elasticity and fitted in the pull-out lock groove is attached to the outer cylinder, and a pin insertion hole is formed in the outer cylinder from a portion exposed by rotation of the inner cylinder to a position facing the pull-out lock member. It is characterized by being formed.

Further, another cylinder lock for achieving the above object is that one of an outer circumference of an outer cylinder rotatably covering the inner cylinder and an inner circumference of a casing covering the outer circumference of the outer cylinder is pulled out. A lock groove is formed, and on the other hand, a pull-out lock member that has elasticity and can be fitted into the pull-out lock groove is attached. A flange is formed, a notch is formed in the flange by cutting out a part of the flange, and the outer cylinder is hidden by the flange of the inner cylinder before the inner cylinder rotates. When the inner cylinder rotates a specific angle, a pin insertion hole is formed from a portion exposed from the cutout portion of the flange to a position where the pullout lock member is exposed.

[0008] Still another cylinder lock for achieving the above-mentioned object is a pull-out lock for one of an outer circumference of an outer cylinder that rotatably covers the inner cylinder and an inner circumference of a casing that covers the outer circumference of the outer cylinder. A groove is formed, and on the other hand, it has elasticity and fits in the pull-out lock groove to restrain the outer cylinder from being undrawable from the casing, and to remove it from the pull-out lock groove against elastic force. A pull-out lock member that allows the outer cylinder to be pulled out from the casing is attached, and the inner cylinder has a flange formed on the outer periphery of the end on the side where the opening of the key insertion hole is formed. A notch is formed by cutting out a part of the flange so as to connect to the opening, and a front end surface that contacts the flange of the inner cylinder is formed on the outer cylinder, and the front end is formed. Surface, the inner cylinder rotates Before it is hidden by the flange of the inner cylinder, a pin insertion hole is formed from the portion exposed from the notch of the flange when the inner cylinder rotates a specific angle to the position where the lock member is exposed. It is characterized by that.

Here, in the above cylinder lock, the pull-out lock member is formed with an inclined surface that gradually approaches the center of the inner cylinder as it goes from the opening side of the key insertion hole to the inner side. preferable.

Further, in the above cylinder lock, the pullout lock groove is formed on the outer periphery of the inner cylinder, the pullout lock member is a plate-shaped leaf spring, and the leaf spring has one end portion thereof. May be attached to the inner circumference of the casing, and may be inclined so as to gradually approach the center of the inner cylinder from the opening side of the key insertion hole toward the inner side.

Further, in each of the cylinder locks described above, it is preferable that the key insertion hole of the inner cylinder and the pin insertion hole of the outer cylinder have a twisted positional relationship.

Further, a cylinder lock device for achieving the above object is such that one of the cylinder locks described above and a plurality of key grooves are formed and are inserted into the key insertion holes of the cylinder lock. A key groove forming portion that allows the inner cylinder to rotate and two key groove forming portions that are wider than the width of the key groove forming portion and that make a step with respect to both end surfaces in the width direction of the key groove forming portion. A key having a key sleeve portion and a knob portion to be gripped by a user; and a key groove forming portion and a knob portion of the key, and of the two key sleeve portions of the key, It is characterized in that it is provided with a replacement key, one of which is notched, and a replacement pin that can be inserted into the pin insertion hole.

[0013]

[Embodiment of the invention]

 Hereinafter, cylinder locks according to various embodiments of the present invention will be described.

First, a cylinder lock as an embodiment according to the present invention will be described with reference to FIGS. 1 to 10. As shown in FIG. 1, the cylinder lock includes an inner cylinder 10 having a key insertion hole 11 into which a key is inserted, an outer cylinder 20 rotatably covering the inner cylinder 10, and an inner cylinder 10. A rotor 35 that is connected and rotates as the inner cylinder 10 rotates, a casing 30 that covers the outer cylinder 20, and a lock member 40 that holds the outer cylinder 20 so that the outer cylinder 20 does not pull out from the casing 30. Is equipped with. Note that, for convenience of description, the left side is the front side and the right side is the rear side in FIGS.

The inner cylinder 10 has a cylindrical shape, and a flange 13 is formed on the outer circumference of the front end thereof. The inner cylinder 10 is formed with the above-described key insertion hole 11 from the front end surface 15 of the flange 13 toward the rear end portion. The opening 12 of the key insertion hole 11 extends to the side end of the flange 13. That is, a part of the flange 13 is cut out, and the cutout portion 14 forms a part of the opening 12. A connecting protrusion 17 for connecting to the rotor 35 is formed at the rear end of the inner cylinder 10.

The rotor 35 rotates a member for actually locking the door or the like, and the mounting end 38 to which this member is mounted and the connecting groove into which the connecting protrusion 17 of the inner cylinder 10 is fitted. And a connecting portion 37 in which 36 is formed.

The outer cylinder 20 has a hollow cylindrical shape, and a flange 21 is formed at a front end portion thereof. The inner diameter of the outer cylinder 20 is substantially the same as the outer diameter of the inner cylinder 10 so that the inner cylinder 10 can be rotatably inserted. A flat surface 25 is formed on a part of the outer circumference of the outer cylinder 20. The flat surface 25 is formed with a pull-out lock groove 26 for restraining the outer cylinder 20 from being pulled out from the casing 30. When the inner cylinder 10 is inserted into the outer cylinder 20, the front end surface 22 of the outer cylinder flange 21 comes into contact with the rear surface of the inner cylinder flange 13. As shown in FIGS. 9 and 10, this is the portion of the front end face 22 of the outer cylinder 20 with which the inner cylinder flange 13 contacts, and when the inner cylinder 10 is rotated by a predetermined angle with respect to the outer cylinder 20, An inlet 24 of the pin insertion hole 23 is formed at a position facing the cutout portion 14 of the cylindrical flange 13. The pin insertion hole 23 is formed up to the extraction lock groove 26. The pin insertion hole 23 has a twisted positional relationship with the key insertion hole 11 formed in the inner cylinder 10. In other words, the direction in which the pin insertion hole 23 extends and the direction in which the key insertion hole 11 extends are three-dimensionally different directions.

Although not shown, the outer cylinder 20 is provided with a plurality of outer pins urged toward the inner cylinder 10 by a spring, as in a normal cylinder lock. The inner cylinder 10 is also provided with a plurality of inner pins (not shown) that are pushed toward the key insertion hole 11 by the plurality of outer pins of the outer cylinder 20. The inner cylinder 10 is non-rotatably bound to the outer cylinder 20 because a plurality of outer pins of the outer cylinder 20 project toward the inner cylinder 10 side. Further, in the inner cylinder 10, when the key 50 is inserted into the key insertion hole 11, a plurality of inner pins in the inner cylinder 10 move, and at the same time, the inner pins in the inner cylinder 10 push the inner cylinder 10 so that the inner cylinder 20 becomes By moving the outer pin, the outer pin can be rotated with respect to the outer cylinder 20.

The casing 30 has a hollow cylindrical shape, a flange 31 is formed at a front end portion thereof, and an opening 32 is formed so that the outer cylinder 20 can be inserted therein. The rear end of the casing 30 is closed by a rear wall 33. The rear wall 33 of the casing 30 is formed with a through hole 34 through which the mounting end 38 of the rotor 35 penetrates. The hollow cylindrical casing 30 has an inner diameter substantially equal to the outer diameter of the outer cylinder 20 so that the cylindrical outer cylinder 20 can be inserted through the opening 32. The casing 30 is attached to the door panel or the like 39 by the flange 31 of the casing 30 itself.

A leaf spring 40, which is a pull-out lock member, is attached to the inner peripheral surface of the casing 30. The leaf spring 40 has one end portion (hereinafter referred to as a base end portion) fixed to the inner peripheral surface of the casing 30 and below the casing 30 by a leaf spring fixture 44. The other end (hereinafter referred to as the tip) of the leaf spring 40 extends in a direction that gradually approaches the center of the casing 30 as it goes deeper into the casing 30. That is, the leaf spring 40 is inclined with respect to the central axis of the casing 30. The tip of the leaf spring 40 fits into the pull-out lock groove 26 of the outer cylinder 20 to restrain the outer cylinder 20 from being pulled out from the casing 30.

A flat surface 45 is formed on the casing center side of the leaf spring fixture 44, that is, on the upper side. The flat surface 45 contacts the flat surface 25 of the outer cylinder 20 when the outer cylinder 20 is housed in the casing 30, and prevents the outer cylinder 20 from rotating with respect to the casing 30. That is, the leaf spring fixing tool 44 has a role of fixing the leaf spring 40 and also a role of restraining the outer cylinder 20 from rotating with respect to the casing 30.

As shown in FIG. 6, the ordinary key 50a used for the cylinder lock described above has a plurality of key grooves 52, 52, ... Formed therein, and the key groove forming portion 51 is inserted into the key insertion hole 11. And two key sleeve portions 54, 54 wider than the width of the key groove forming portion 51 and forming a step with respect to both end surfaces 53, 53 in the width direction of the key groove forming portion 51, respectively. The user has a grip portion 57 to be gripped. The plurality of key grooves 52, 52, ... Of the key groove forming portion 51 are formed in accordance with the positions of a plurality of inner pins (not shown) provided in the inner cylinder 10. The key sleeve 54 has a reference surface 55 that is perpendicular to the end surface of the key groove forming portion 51 in the width direction at the boundary with the key groove forming portion 51. The reference surface 55 is brought into contact with the flange front end surface 15 of the inner cylinder 10 when the key groove forming portion 51 is inserted into the key insertion hole 11 of the inner cylinder 10, so that the key groove forming portion 51 is formed. , And the plurality of inner pins formed in the inner cylinder 10 are aligned with each other in the front-rear direction.

As shown in FIG. 7, the replacement key 50 used when replacing the cylinder lock is basically the same as the above-described key 50a except that one of the two key sleeve portions 54, 54 is cut out. Specifically, it is the same as the above key 50. Therefore, even if this replacement key 50 is inserted into the key insertion hole 11 of the inner cylinder 10, the plurality of key grooves 52 formed in the key groove forming portion 51 of the replacement key 50 and the inner cylinder 10 The positions of a plurality of inner pins provided on the inner cylinder 10 coincide with each other, and the inner cylinder 10 can be made rotatable. Therefore, the replacement key 50 can be used not only as a replacement key for the cylinder lock but also as a spare key.

Next, the cylinder lock replacement work will be described. In a normal state where the keys 50 and 50a are not inserted, as shown in FIG. 1, the tip end portion of the leaf spring 40 provided in the casing 30 fits into the pullout lock groove 26 of the outer cylinder 20. Therefore, the outer cylinder 20 cannot be pulled out from the casing 30. Further, in this state, since the keys 50 and 50a are not inserted, as described above, the outer pin (not shown) in the outer cylinder 20 projects toward the inner cylinder 10 side, and the outer cylinder 20. On the other hand, the inner cylinder 10 cannot rotate. Further, in this state, as shown in FIG. 9, the notch portion 14 of the inner cylinder flange 13, which is connected to the opening 12 of the key insertion hole 11, faces downward, and the front end face 22 of the outer cylinder 20 is shown. The inlet 24 of the pin insertion hole 23 formed in the above is hidden by the inner cylinder flange 13. Therefore, in this state, the replacement pin 60, which will be described later, cannot be inserted from the pin insertion hole 23 of the outer cylinder 20.

When replacing the cylinder lock after losing the key 50a, first, the replacement key 50 is inserted into the key insertion hole 11 as shown in FIG. Here, it should be noted that the key sleeve 54 of the replacement key 50 is on the upper side and the side without the key sleeve 54 is on the lower side, in other words, the side where the key sleeve 54 is cut out. Is to be the notch 14 side of the inner cylinder flange 13 and the replacement key 50 is inserted. When the replacement key 50 is inserted into the key insertion hole 11 and the key groove 52 of the replacement key 50 and the inner pin in the inner cylinder 10 are aligned, as described above, the inner cylinder 10 is replaced with the outer cylinder. You will be able to rotate against 20. Therefore, by rotating the replacement key 50 while inserting it into the key insertion hole 11, as shown in FIG. 10, the pin insertion formed on the front end face 22 of the outer cylinder from the notch portion 14 of the inner cylinder flange 13 is inserted. The entrance 24 of the hole 23 is exposed.

Next, as shown in FIG. 3, with the replacement key 50 left as it is, the replacement pin 60 is inserted into the pin insertion hole 23 of the outer cylinder 20, and the outer cylinder 20 is pulled out. The tip of the leaf spring 40 fitted in the lock groove 26 is pushed to remove the tip of the leaf spring 40 from the pullout lock groove 26. As a result, the outer cylinder 20 is pulled out from the casing 30. In addition, in FIG. 3, although the inner cylinder 10 is rotated from the state of FIG. 2, the position of the notch portion 14 of the inner cylinder flange 13 is the same as that of FIG. 2, and the outer cylinder 20 is Although not rotating, the position of the pin insertion hole 23 formed in the outer cylinder 20 has moved from that of FIG. 2 because the pin 60 for replacement is the pin from the cutout portion 14 of the inner cylinder flange 13. This is because it is easier to understand that the inner cylinder 10 is inserted into the insertion hole 23, and the inner cylinder 10 is not actually rotated and the position of the pin insertion hole 23 is not moved.

What is important in the above-described insertion process of the replacement pin 60 is, firstly, one of the normally two key sleeves 54, 54 is notched in the replacement key 50. It is being done. Therefore, even when the replacement key 50 is inserted into the key insertion hole 11, a gap can be secured in front of the notch portion 14 of the inner cylinder flange 13, and from this gap, the notch of the inner cylinder flange 13 is formed. The replacement pin 60 can be inserted into the pin insertion hole 23 of the outer cylinder 20 via the portion 14. The second important thing in the process of inserting the replacement pin 60 is that the key insertion hole 11 formed in the inner cylinder 10 and the pin insertion hole 23 formed in the outer cylinder 20 are twisted. It is that they are in a positional relationship. For this reason, the replacement key 50 inserted into the key insertion hole 11 and the replacement pin 60 inserted into the pin insertion hole 23 have different directions, and the replacement key 50 is held at a different position. The position where the replacement pin 60 is gripped is separated, and both can be easily operated.

Subsequently, as shown in FIGS. 4 and 5, the outer cylinder 20, which is in a state of being pulled out from the casing 30, is pulled out together with the inner cylinder 10. Then, a new set of the inner cylinder 10 and the outer cylinder 20, that is, the inner cylinder 10 and the outer cylinder 20 corresponding to the key having a key code different from the lost key 50a is inserted into the casing 30. Here, what is important is that the plate panel 40 gradually moves toward the center of the casing 30 as it goes deeper. As described above, since the leaf spring 40 is inclined, when the outer cylinder 20 is moved to the inner side of the casing 30, the outer circumference of the outer cylinder 20 does not need to be pushed down by a tool or the like to depress the tip portion of the leaf spring 40. The outer cylinder 20 can be moved inward while pushing the leaf spring 40. When the connecting projection 17 of the new inner cylinder 10 is fitted into the connecting groove 36 of the rotor 35 and cannot be pushed further into the inner groove, the tip of the leaf spring 40 is inserted into the pull-out lock groove 26 of the new outer cylinder 20. When fitted, the new outer cylinder 20 cannot be pulled out from the casing 30.

As described above, in this embodiment, when the inner cylinder 10 and the outer cylinder 20 are detached, by using the replacement key 50 and the replacement pin 60, anyone can easily carry out the inner cylinder 10 and the outer cylinder. 20 can be removed from the casing 30. In addition, when mounting a new set of the inner cylinder 10 and the outer cylinder 20, the new inner cylinder 10 and the outer cylinder 20 are simply inserted into the casing 30 without using any tool, and the new inner cylinder 10 and the outer cylinder 20 are attached to the casing 30. Can be attached to. Therefore, the cylinder lock can be replaced in a short time without requesting a specialist to replace the cylinder lock.

Moreover, in this embodiment, it is not necessary to request a cylinder locker replacement from a specialist, and in addition, it is not necessary to replace only the inner cylinder 10 and the outer cylinder 20, that is, the casing 30 and the rotor 35. The cost for replacing the cylinder lock can be kept very low.

Next, a cylinder lock according to a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, as the pull-out lock member 40a, the one having the fitting portion 41a fitted into the pull-out lock groove 26 of the inner cylinder 10 and the coil spring 42a attached to the outer cylinder 20 is used. I am using. In addition, in the second embodiment, the outer spring 20 does not rotate with respect to the casing 30, although the one corresponding to the leaf spring fixing member 44 in the first embodiment (hereinafter referred to as the outer cylinder rotation stopping member 44a) does not rotate. It is only responsible for doing so. The second embodiment is substantially the same as the first embodiment except for the pull-out lock member 40a and the outer cylinder rotation stopping member 44a described above.

The fitting portion 41 a of the pull-out lock member 40 a has an inclined surface 43 a on the front side and the upper side thereof, which gradually approaches the central portion of the casing 30 as it goes deeper into the casing 30. One end of the coil spring 42a is attached to the inner peripheral surface of the outer cylinder 20, and the other end of the coil spring 42a is attached to the lower surface of the fitting portion 41a.

As described above, the outer cylinder rotation stopping member 44a is formed with the flat surface 45a in contact with the flat surface 25 of the outer cylinder 20 in order to restrict the rotation of the outer cylinder 20. The flat surface 45a is formed with a lock member housing groove 46a in which the pull-out lock member 40a is housed. The side wall of the lock member housing groove 46a is provided with a fitting portion 41a of the pull-out lock member 40a in the radial direction of the casing 30. That is, there is formed a guide surface 47a that moves only in the vertical direction.

Also in this embodiment, when the cylinder lock is replaced, as in the first embodiment, the replacement pin 60 is inserted into the pin insertion hole 23 of the outer cylinder 20 to fit the pull-out lock member 40a. The portion 41a is pushed down to remove the fitting portion 41a from the pull-out lock groove 26 of the outer cylinder 20, and then the outer cylinder 20 is pulled out from the casing 30. In addition, when the new inner cylinder 10 and outer cylinder 20 are attached, since the inclined surface 43a is formed in the fitting portion 41a, it is not necessary to push down the fitting portion 41a with a tool or the like as in the first embodiment. Also, the new inner cylinder 10 and the outer cylinder 20 can be attached to the casing 30 only by pushing the new inner cylinder 10 and the outer cylinder 20 into the casing 30. That is, also in this embodiment, the same effect as that of the first embodiment can be obtained.

Next, a cylinder lock according to a third embodiment of the present invention will be described with reference to FIGS. 12 and 13. The third embodiment is substantially the same as the second embodiment except that the pullout lock member 40b is provided on the outer cylinder 20b side and the pullout lock groove 46b is provided on the casing 30 side. Therefore, also in this embodiment, the pull-out lock member 40b has the fitting portion 41b and the coil spring 42b.

A lock member storage groove 26b, in which the pull-out lock member 40b is stored, is formed in the lower outer periphery of the outer cylinder 20b. A guide surface 27b is formed on the side wall of the lock member storage groove 26b to move the fitting portion 41b of the pullout lock member 40b only in the radial direction of the outer cylinder 20b, that is, in the vertical direction.

The fitting portion 41b of the pull-out lock member 40b is formed on the rear side and the lower side thereof with a first inclined surface 43b which gradually approaches the central portion of the casing 30 as it goes deeper into the casing 30. A second inclined surface 43c is formed on the front side and the upper side so as to gradually approach the central portion of the casing 30 as it goes toward the opening side of the casing 20. One end of the coil spring 42b is attached to the bottom of the lock member storage groove 26b formed in the outer cylinder 20b, and the other end of the coil spring 42b is attached to the upper surface of the fitting portion 41b.

A flat surface 45b, which is in contact with the flat surface 25 of the outer cylinder 20b, is formed on the outer cylinder rotation stopping member 44b forming a part of the casing 30 in order to restrict the rotation of the outer cylinder 20b. An extraction lock groove 46b into which the fitting portion 41b of the extraction lock member 40b described above is fitted is formed on the flat surface 45b.

Also in this embodiment, when the cylinder lock is replaced, the replacement pin 60 is inserted into the pin insertion hole 23 of the outer cylinder 20b as in the above-described embodiments. At this time, the tip end portion of the replacement pin 60 comes into contact with the second inclined surface 43c of the fitting portion 41b, as shown in FIG. As described above, the second inclined surface 43c is inclined so as to gradually approach the central portion of the casing 30 as it goes toward the opening side of the casing 30, and therefore, when the replacement pin 60 is further pushed, it is pulled out. The fitting portion 41b of the lock member 40b is pushed up, the fitting portion 41b is disengaged from the pull-out lock groove 46b of the outer cylinder rotation stopping member 44b, and the outer cylinder 20b is pulled out from the casing 30. Further, when the new inner cylinder 10 and the outer cylinder 20b are mounted, the first inclined surface 43b is formed in the fitting portion 41b, so that the new inner cylinder can be formed without pushing up the fitting portion 43b with a tool or the like. The new inner cylinder 10 and outer cylinder 20b can be attached to the casing 30 simply by pushing the inner cylinder 10 and the outer cylinder 20b into the casing 30. That is, also in this embodiment, the same effect as that of the first embodiment can be obtained.

[0040]

[Effect of the invention]

 According to the present invention, anyone can perform the cylinder lock exchange work easily and in a short time by using the exchange key and the exchange pin for the cylinder lock exchange. However, according to the present invention, as described above, since it is not necessary to request a specialist, and since it is not necessary to replace the entire cylinder lock by replacing only the inner cylinder and outer cylinder of the cylinder lock, the cylinder lock The cost of changing locks can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view (normal time) of a cylinder lock according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a cylinder lock (when a replacement key is inserted) according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the cylinder lock according to the first embodiment of the present invention (when the replacement pin is inserted).

FIG. 4 is a cross-sectional view of the cylinder lock according to the first embodiment of the present invention (when the inner cylinder and the outer cylinder are pulled out).

FIG. 5 is a cross-sectional view of a casing according to the first embodiment of the present invention.

FIG. 6 is a side view of the key according to the first embodiment of the present invention.

FIG. 7 is a side view of the replacement key according to the first embodiment of the present invention.

FIG. 8 is a view on arrow VIII in FIG.

FIG. 9 is a front view (normal time) of the inner cylinder and the outer cylinder as the first embodiment according to the present invention.

FIG. 10 is a front view (when the inner cylinder is rotating) of the inner cylinder and the outer cylinder as the first embodiment according to the present invention.

FIG. 11 is a sectional view of a cylinder lock according to a second embodiment of the present invention.

FIG. 12 is a sectional view (normal time) of a cylinder lock according to a third embodiment of the present invention.

FIG. 13 is a cross-sectional view of a main part of a cylinder lock (when a replacement pin is inserted) according to a third embodiment of the present invention.

[Explanation of symbols]

Reference numeral 10 ... Inner cylinder, 11 ... Key insertion groove, 12 ... Opening of key insertion groove, 13 ... Inner cylinder flange, 14 ... Notch portion, 15 ... Front end surface of inner cylinder, 20, 20b ... Outer cylinder, 21 ... Outer Flange of cylinder, 22 ... Front end surface of outer cylinder, 23 ... Pin insertion hole, 24 ... Entrance of pin insertion hole, 25 ... Flat surface of outer cylinder, 26, 46b
... pull-out lock groove, 30 ... casing, 31 ... casing flange, 32 ... casing opening, 35 ... rotor,
40, 40a, 40b ... Pull-out lock member, 41a, 41
b ... Fitting part, 42a, 42b ... Coil spring, 44 ... Leaf spring fixture, 44a, 44b ... Outer cylinder rotation stopping member, 45 ...
Flat surface of leaf spring fixture, 45a, 45b ... Flat surface of outer cylinder rotation stopping member, 50 ... Replacement key, 50a ... Key, 5
DESCRIPTION OF SYMBOLS 1 ... Key groove formation part, 52 ... Key groove, 53 ... Width direction end surface, 54 ... Key sleeve part, 55 ... Reference surface, 57 ... Pick part, 6
0 ... Pin for replacement.

Claims (7)

[Utility model registration claims] 1. An inner cylinder having a key insertion hole into which a key is inserted, an outer cylinder rotatably covering the outer circumference of the inner cylinder, and a casing covering the outer circumference of the outer cylinder. In the cylinder lock provided with, a pullout lock groove is formed in one of the outer circumference of the outer cylinder and the inner circumference of the casing, and the other has a pullout lock that has elasticity and can be fitted into the pullout lock groove. A cylinder lock, wherein a member is attached, and a pin insertion hole is formed in the outer cylinder from a portion exposed by rotation of the inner cylinder to a position where the extraction lock member is exposed. 2. An inner cylinder having a key insertion hole into which a key is inserted, an outer cylinder rotatably covering the outer circumference of the inner cylinder, and a casing covering the outer circumference of the outer cylinder. In the cylinder lock provided with, a pullout lock groove is formed in one of the outer circumference of the outer cylinder and the inner circumference of the casing, and the other has a pullout lock that has elasticity and can be fitted into the pullout lock groove. A member is attached, the inner cylinder has a flange formed on the outer periphery of the end portion on the side where the opening of the key insertion hole is formed, and the flange has
A notch is formed by cutting out a part of the flange, the outer cylinder is hidden by the flange of the inner cylinder before the inner cylinder rotates, and when the inner cylinder rotates by a specific angle, A cylinder lock characterized in that a pin insertion hole is formed from a portion of the flange exposed from the cutout portion to a position where the pullout lock member is exposed. 3. An inner cylinder having a key insertion hole into which a key is inserted, an outer cylinder rotatably covering the outer circumference of the inner cylinder, and a casing covering the outer circumference of the outer cylinder. In the cylinder lock, the pullout lock groove is formed on one of the outer circumference of the outer cylinder and the inner circumference of the casing, and the other has elasticity and is fitted into the pullout lock groove. A pull-out lock member is attached that enables the outer cylinder to be pulled out from the casing while restraining the outer cylinder from being undrawable from the casing, and is removed from the pull-out lock groove against the elastic force. A flange is formed on the outer periphery of the end on the side where the opening of the key insertion hole is formed, and the flange has
A notch is formed by cutting out a part of the flange so as to connect to the opening, and a front end surface that contacts the flange of the inner cylinder is formed on the outer cylinder, and the front end surface is formed. Where the inner cylinder is concealed by the flange of the inner cylinder before rotating, and the lock member is exposed from the portion exposed from the cutout portion of the flange when the inner cylinder rotates a specific angle. Cylinder lock characterized in that pin insertion holes are formed up to. 4. The cylinder lock according to claim 1, 2 or 3, wherein the pull-out lock member is formed with an inclined surface that gradually approaches the center of the inner cylinder from the opening side of the key insertion hole toward the inner side. Cylinder lock characterized by being 5. The cylinder lock according to claim 1, 2 or 3, wherein the pull-out lock groove is formed on an outer periphery of the inner cylinder, and the pull-out lock member is a plate-shaped leaf spring. The cylinder is characterized in that one end thereof is attached to the inner circumference of the casing and is inclined so as to gradually approach the center of the inner cylinder from the opening side of the key insertion hole toward the inner side. Tablets. 6. The cylinder lock according to claim 1, 2, 3, 4 or 5, wherein the key insertion hole of the inner cylinder and the pin insertion hole of the outer cylinder have a twisted positional relationship. Characteristic cylinder lock. 7. The cylinder lock according to claim 1, 2, 3, 4, 5 or 6, wherein the inner cylinder is rotatable when a plurality of key grooves are formed and are inserted into the key insertion holes of the cylinder lock. A key groove forming part, and two key sleeve parts having a width wider than that of the key groove forming part and forming a step with respect to both widthwise end surfaces of the key groove forming part, respectively. A key that the user holds, a key groove forming part of the key, and the key part, and one of the two key sleeve parts of the key is notched A cylinder lock device comprising a replacement key and a replacement pin that can be inserted into the pin insertion hole.