JPH0238675A - Side bar cylinder lock - Google Patents

Abstract

PURPOSE:To change an only internal cylinder and enable secrecy and safety to be kept even if a user is changed, by releasing engagement between a stopper key for disabling the internal cylinder set attachably and removably on an external cylinder, to be attached and removed in an ordinary state, and the external cylinder, with an attaching and removing key. CONSTITUTION:Through an external cylinder 10 fixed on a fitted body, a key hole 23 is bored, and an internal cylinder 20 provided with a plurality of tumblers 30 coming in and from the cylinder freely and energized with a spring 3 to be projected into is fitted attachably and removably, and a stopper 40 for disabling the internal and external cylinders 20, 10 to be attached and removed in an ordinary state is set. Besides, on the internal cylinder, the side bar 50 at least is set energized to be projected with a spring 53 in an ordinary state. Then, the attaching and removing key 63 of a tip section made longer than that of a change key 61 or the like is inserted, and by the tip section, the stopper 40 is held up, and the engagement with the external cylinder 10 is released, and together with the attaching and removing key 63, the internal cylinder 20 is pulled out and is removed, and a lock is easily exchanged.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lock, and particularly to a sidebar cylinder lock in which an inner cylinder is detachably attached to an outer cylinder.

(Prior Art) Conventionally, cylinder locks have been fixed to various types of equipment, house doors, and bow openings, and have been locked and unlocked using a master key or a corresponding change key.

Therefore, as long as the user had the appropriate change key or master key, he or she could protect the confidentiality of the equipment, etc., and felt secure.

(Problem M to be solved by the invention) However, when the user of the equipment, house, etc. is transferred or relocated and the new user uses the equipment, house, etc., even if the key is returned, the key is not returned. Since the cylinder locks could be easily duplicated, there were concerns about confidentiality and safety, and each cylinder lock was replaced with a new one. Therefore, this work required time and money to be exchanged with other vendors. In addition, since it is originally assumed that the object will be completely fixed, if it is replaced, the object to be attached will be damaged or a different hole will be used, resulting in problems such as poor appearance and longevity of the object. there were.

(Means for Solving the Problems) -1- In view of the interlocking assembly, the present invention provides an outer cylinder fixed to a body to be mounted with an inner cylinder detachably provided, and a key extending in the axial direction in the inner cylinder. In addition to forming a hole and providing a plurality of tumblers that can freely move in and out of the keyhole and are normally biased to push into the keyhole,
At least one of the inner cylinder and the outer cylinder,
Provided with a stopper that makes it impossible to separate the inner and outer cylinders under normal conditions,
Furthermore, at least one side bar is provided on the inner cylinder so as to be normally protruding and retractable, and an engagement groove is formed on the inner peripheral surface of the outer cylinder to engage with the protruding side bar. ,
When a master key or a corresponding change key is inserted into the key hole, the plurality of tumblers are moved so that the side bar can be retracted, and the inner cylinder rotates with respect to the outer cylinder. When the removable key is inserted into the key hole, the tumbler can be moved so that the inner cylinder can rotate freely in the same way as the change key, and the inner cylinder can be detached from the outer cylinder. The stopper is a movable side bar cylinder lock so that the stopper is movable.

(Function) Use a change key or master key to make the inner cylinder rotatable, which is normally fixed to the outer cylinder fixed to the object to be attached, such as a device or door. When opening/closing equipment or doors, or when the user changes, use the attachment/detachment key to separate the inner cylinder from the outer cylinder, insert another inner cylinder into the outer cylinder remaining on the object to be attached, and match the new inner cylinder. It can be opened and closed using the key. The inner cylinder and key that have been used so far can be reused safely and confidentially by attaching them to a body to be worn that has no relation to the previous user. Also, if you give the removed inner bay and key to the previous user and attach it to the outer barrel of the next object to be attached, there is no need to worry about duplication as the inner barrel and key belong to one person. No trouble occurs.

(Example) Next, the present invention will be explained based on the drawings.

1 to 13 show an embodiment of the present invention. FIG. 1 shows the outer cylinder 10 and the inner cylinder 20 in imaginary lines, shows the tumbler field, stopper 40 and side bar 50 in the inner cylinder 20 as an exploded perspective view, and also shows a key such as a change key 61 in a perspective view. It is something that FIG. 2 is a partially exploded perspective view showing the assembled state of the inner jt+20.

The outer RIO consists of a cylindrical part 11 and a flange part 12, an inner circumferential surface 13 is formed at the center thereof, and a stepped part 14 is formed on the front side.
However, a stepped portion 15 with a similarly enlarged diameter is formed on the back side (see FIGS. 6 and 7), and as can be seen from FIGS. 12 and 13, this flange portion 12 is partially cut out to form two parallel notches 16, which also serve to prevent rotation when fixed to the object 91.

On the other hand, the inner [20] is removably installed on the outer cylinder, and as can be seen from FIGS. 1 and 2, the outer cylinder 1
A cylindrical portion 21 that can be rotatably and slidably attached to the inner circumferential surface 13 of 0 and a flange portion 22 are formed so that the cylindrical portion 21 does not come out to the back side. A key hole 23 extending in the axial direction is formed in this inner cylinder 20.
A plurality of tumblers 30 are provided which can freely move in and out of the tumbler 3 and are normally biased.

The details of the tumbler 30 are shown in FIGS. 1, 8, and 9 as a large number of flat plates, and as shown in FIG. hole 2
It is inserted into 4. This flat plate is cut out at several places, and the upper side in the figure is a notch 32 that forms the seat of the spring 31, and the lower side is the left side at the height A-E shown in Figure 3. -J cutout 33 is formed. Corresponding to this notch 33, the master key 62 is cut to form a step so as to be shifted in the axial direction as shown in FIG.

As shown in FIG. 10, the master key 62 in this example has the upper right half of its tip cut off, and is distinguished from the change key 61 and the detachable key 63, which have the upper left half cut off. The change key 61 in the notch 34 on the right side of the lower side is the third
As shown in the figure, steps as shown in FIG. 5 are formed corresponding to tumblers 1 to 5 of the tumblers 30, and by operating the tumbler 30 as shown in FIG. 8, the tumbler 30 is formed on the right side thereof. The notches 35 are formed in a straight line.

The attachment/detachment key 63 is the same as the change key 61 shown in FIG. 6 except for the length of the tip (see FIG. 7).

The tip of this attachment/detachment key 63 engages with a stopper 40 provided at the rear of the row of tumblers 30, and the inner and outer cylinders 1O120
The shaded area has been lengthened to allow for removal.

The stopper 40 is shown in FIGS. 1, 6 to 9, and 1.
As shown in FIG. 1, at least one of the inner cylinder 10 and the outer cylinder 20 is provided with a stepped part 15 so that the inner and outer cylinders cannot be separated under normal conditions. engaged in normal condition and cannot be reached with change key 61), 7th
As shown in the figure, when the detachable key 63 is inserted, the stepped portion 15
It is moved so that it can be disengaged and removed.

At this time, the notch 35 of the tumbler 3o is also aligned in a straight line.

The tumbler 30 and the stopper 40 are installed in holes 24 and 25 provided in the inner cylinder 20, respectively, and a spring 31 is held by a flat plate 36 to prevent it from popping out. Further, at least one side par 50 is normally urged to protrude and retract from the inner cylinder 2o. In this example, one side par 50 is provided at a position approximately 90 degrees from the position of the flat plate 36. As shown in FIGS. 1 and 3, the shape of the side par 50 is such that the protruding portion 51 has a substantially semi-cylindrical shape, and the key portion 52 that fits inside is formed into a thin flat plate, leaving the upper portion in the figures.

This key part 52 is made to fit into the notch 35 during key operation, and in normal condition, the key part 52 is inserted into the notch 35 of the tumbler 3o.
The side pars 50 are not lined up in a straight line so that the key portion 52 protrudes, and the side pars 50 are provided in the inner cylinder 20 so as to be freely protrusive and retractable along the generatrix direction (axial direction).
It is urged to protrude by. A semi-cylindrical protrusion 51 that projects from the outer circumference of the inner cylinder 20 is a part of the outer cylinder 10.
It engages with the head-shaped arcuate cross-sectional groove 17 of the protrusion 51 provided along the generatrix direction (axial direction) on the cylindrical circumferential surface 13 of the protrusion 51, and this engagement is prevented from being released.

Next, how to use this sidebar cylinder lock will be explained.

Although this side bar cylinder lock has an outer cylinder 20 and an inner cylinder 20 as a set, they are separate pieces, so if several types of inner cylinders 20 are prepared, only one type of outer cylinder 10 is required.

First, the outer cylinder 10 is fixed to an object that requires a lock, such as a device, a door of a house, a drawer, or the like. On the other hand, in the assembly of the internal information 20 as shown in FIG. 2, when the detachable key 63 is inserted, the stopper 40 is lifted as shown in FIG. 9, and the tumbler 30 is aligned with the notch 35. The protrusions 51 of the side pars 50 can be pushed in and inserted into the circumferential surface 13 of the outer cylinder 10. The inserted inner cylinder 20 is rotated left and right, and when the protruding and biased side par 50 slides on the inner circumferential surface 13 and coincides with the arc cross-sectional groove 17, the protrusion 51 engages therewith. At the same time, for example, on the back side of the inner cylinder 20, although not shown here, a conventionally known hook or the like can be engaged or connected, and this hook or the like can be engaged with the object to be attached. By releasing the substantial lock,
unlocked. Then, by removing the attachment/detachment key 63, the tumbler 30 is moved to its respective position by the spring 31, and the side par 50 is
Further, the stopper 40 descends and engages with the stepped portion 15 as shown in FIG. 6 to prevent the inner cylinder 20 from coming off from the outer cylinder 10.

In this state, the manager owns the attachment/detachment key 63 and the master key 61, hands only the change key 62 to the user, and uses the change key 62 to lock and unlock the user.

Specifically, when the change key 62 is inserted into the key hole 23, the tumbler 30 is moved upward as shown in FIGS. I'm letting you do it. In this state, when the change key 62 is rotated in the left and right predetermined directions, the inner cylinder 2
0 is subjected to force, and the protrusion of the side par 50 is moved into the arcuate cross-section groove 1.
It is moved in the direction of the curve and towards the center of the inner 1IJ20 so as to come out of 7, and is rotated. Therefore, a hook provided on the back side of the inner cylinder 10 (not shown) is operated to perform locking and unlocking. At this time, at change kilometer 2, the stopper 40 is not reached as is clear from FIG. There is no.

Further, when the user forgets or loses the change key 62, the master key 61 kept at the manager's place is used. Master key 6! When inserted into the keyhole 23, it does not reach the stopper 40' as shown in Fig. 6 and the stopper 40 does not move upward as shown in Fig. 7, but the step shown in Fig. 8 corresponds to the step shown in Fig. Move the tumbler 30 upward as shown in Figure 12, and align the notches 35 in a straight line (see the left to middle diagrams in Figure 12). Therefore, in this state, if you rotate the master key 61 left and right, As shown on the right side of FIG. 12, the protruding part 51 of the side par 50 is pushed into the inner part n20 by the arc cross-sectional groove 17, and the key part 52 enters the notch part 35 to enable rotation of the inner cylinder and lock it. , can be unlocked.

By the way, when a user changes equipment or home due to a change in assignment or relocation, the manager must use the detachable key 6.
3, remove the inner fi 20 from the outer cylinder 10, and insert the inner cylinder 10 differently. That is, as shown in FIGS. 7 and 9, the tumbler 30 is moved so that the notch 35 is in a straight line, and the stopper 40 is moved upward to release the engagement with the stepped part 15. Due to the rotational movement of the side par 50, the opening part 52 of the side par 50 enters the notch 35, causing the side par 50 to protrude! The IJ portion 51 escapes from the arc cross-section groove 17, and the inner cylinder 1o rotates. At this time, for example, when the inner cylinder 10 is rotated by a predetermined angle, the engagement and association with a hook (not shown) or the like is released, and the inner cylinder 10 is pulled out to the front side. The pulled out inner fl110 has a master key 61 and a change key 6.
2 and the attachment/detachment key 63 are assigned to the previous user, brought to a newly used device, house, or other object to be attached, and attached to the outside IQIO there in the manner described above. In this case, if the outer cylinder 10 is attached to the body to be fitted, the lock can be easily and quickly replaced by simply mounting the inner cylinder 20 of the side pal cylinder lock without any carpentry work, for example.

In addition, when the inner cylinder 10 and various keys 61, 62, 83 are not attributed to the previous user, the removed inner cylinder 10 can be used in a place unrelated to the previous user (a place unknown to the previous user). It is safe to reuse the front lock without considering whether the various keys 61, 62, 63 have been duplicated or not, and without discarding the front lock.

(Effects) As explained above, according to the present invention, only the inner cylinder having the cylinder portion can be removed, so even if the user of the device changes, the lock can be easily and quickly replaced. In this case, the key and inner cylinder will not be damaged, the removal marks will become dirty and unsightly, and the service life of the attached object will not be shortened. If the key is to be kept securely and confidentially without the risk of it being duplicated, even if the key is not assigned to a single individual, by changing the inner cylinder each time, the new user will be able to maintain confidentiality and security by copying the previous user. does not raise concerns that the rules will not be followed.

[Brief explanation of the drawing]

The figures relate to one embodiment of the present invention, in which Fig. 1 is a perspective view of the side bar cylinder lock and key partially shown in phantom lines, Fig. 2 is an exploded perspective view of the inner cylinder, and Fig. 3 is a perspective view of the side bar cylinder lock and key partially shown in phantom lines. An explanatory diagram showing an example of a key, a step of a master key, and a tumbler, FIG. 4 is a partial front view showing a step of a change key, FIG.
The figure is a partially omitted longitudinal cross-sectional view of the sidebar cylinder lock with the master key inserted, Figure 7 is a view similar to Figure 6 with the detachable key inserted, and Figure 8 is the master key, tumbler, and Figure 9 is a perspective view of the main part showing the state of engagement with the stopper, Figure 9 is a view similar to Figure 8 showing engagement with the detachable key, Figure 1O is a perspective view of the tip of the change key, and Figure 11 is the change key. Figure 12 is an explanatory diagram of locking and unlocking operations using the mask key or detachable key, and Figure 13 is a diagram similar to Figure 8 showing the engagement with the inner cylinder. FIG. 10...Outer cylinder, 13...Inner peripheral surface, 2
0... Inner cylinder, 23... Key hole, 30... Tumbler, 35... Notch,
40...Stopper 50...Side par 51...Protrusion part, 52...Ki part. Figure 3: Tree diagram

Claims (1)

[Claims] (1) An inner cylinder is removably attached to an outer cylinder that is fixed to the object to be attached, and the inner cylinder has a key hole extending in the axial direction, and can be moved in and out of the key hole and is normally biased to enter. A plurality of tumblers are provided, and at least one of the inner cylinder and the outer cylinder is provided with a plurality of tumblers.
A stopper is provided that makes it impossible to separate the inner and outer cylinders in a normal state, and the inner cylinder is further provided with at least one side bar that is urged to protrude and retract freely in a normal state, and the stopper that protrudes from the inner peripheral surface of the outer cylinder is provided. forming an engagement groove that engages with the side bar, and moving the plurality of tumblers so that the side bar can be retracted when a master key or a corresponding change key is inserted into the key hole; , the inner cylinder is rotatable with respect to the outer cylinder, and the tumbler is arranged so that when the detachable key is inserted into the key hole, the inner cylinder is rotatable in the same way as the change key. The side bar cylinder lock is characterized in that the stopper can be moved such that the inner cylinder can be moved and the inner cylinder can be separated from the outer cylinder.