JP3718178B2 - Cylinder lock lock / unlock display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a lock / unlock display device for a cylinder lock which can be understood at a glance from the state of locking / unlocking of a cylinder lock provided on a drawer of a cabinet, a door of a rocker or a door of an entrance / exit.
[0002]
[Prior art]
As this type of conventional locking / unlocking display device, for example, the one described in JP-A-9-25751 can be exemplified.
[0003]
One locking / unlocking display device disclosed in this publication is provided with a cylinder head that can be rotated by 180 ° with respect to a lock body, and a surface plate colored with two different colors and a part of the surface of the display plate. Attach a case cover with an opening that exposes the cylinder in order, and rotate the display board or case cover as the cylinder head rotates to check the locked or unlocked state by the color of the display board visible from the opening of the case cover It is something that can be done.
[0004]
Further, another locking / unlocking display device is provided with a cylinder head colored around two different colors around the keyhole so that the cylinder head can be rotated 180 ° with respect to the lock body, and has an opening for exposing the coloring of the cylinder head. By covering the case cover and attaching it to the lock body, and rotating the cylinder head, the locked or unlocked state can be confirmed from the difference in the color of the colored portion visible from the opening of the case cover.
[0005]
The locking / unlocking display device having the above-described configuration is of course capable of exhibiting the intended function and is practically used. However, since the colored portion of the display board or cylinder head is provided in the inner cylinder end surface of the cylinder lock, the colored display is provided. There is room for improvement, such as being unable to enlarge the part and being difficult to see the lock / unlock indication from a distance.
[0006]
The present applicant has previously proposed a cylinder lock locking / unlocking display device which has solved the above-mentioned disadvantages, for example, by Japanese Patent Application No. 9-369458.
[0007]
An object of the present invention is to improve the locking / unlocking display device for a cylinder lock according to the proposal of the applicant, and to provide a locking / unlocking display device capable of dealing with two or more types of cylinder locks having different locking / unlocking operations. .
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention rotates the key inserted in the key hole at the time of locking by an angle of 4α and removes the key at the angular position. The cylinder lock of the type that removes the key at the angle position and the key inserted in the key hole at the time of locking rotate the angle of 2α, turn it back in the opposite direction to the same angle, remove the key, and reverse the direction at the time of unlocking It is possible to display the locking and unlocking states of the two types of cylinder locks that are rotated at an angle of 2α, turn back in the same angle locking direction and remove the key, and are coaxial with the outer cylinder of the cylinder lock. A display ring is rotatably fitted to the outer peripheral part of the outer end that slightly protrudes from the outer end surface of the outer cylinder of the inner cylinder that is fitted to the inner cylinder, and the center of the inner cylinder is arranged along the circumferential direction on the outer surface of the display ring. Three sections with an angle α that looks into the axis are connected in series. Applying different colors to the end section, providing two display portions corresponding to the locked state and the unlocked state, respectively, and forming a floating notch over a certain angular range inside the inner peripheral surface of the display ring, On the other hand, at the outer end of the outer peripheral surface of the inner cylinder, a hook projecting radially and movably engaged with the floating notch is projected, and the difference in angle between the floating notch and the inner cylinder central axis of the hook is expected. 2α, and on the other hand, an outer cylinder cap having a shallow cup-like shape with an opening through which the outer end surface of the inner cylinder can be seen and a display hole through which the display part of the display ring can be seen covers the outer end of the cylinder lock. It is characterized by wearing.
[0009]
【Example】
The present invention will be described below with reference to the drawings.
This invention is a cylinder lock in which α is 45 degrees, that is, a type in which a key is inserted into a keyhole, rotated 90 degrees in the locking or unlocking direction, and returned 90 degrees in the opposite direction to remove the key. It is particularly suitable for locks and locks of the type in which the key is inserted into the keyhole and rotated 180 degrees in the locking or unlocking direction and the combined key is removed. Lock display can be performed.
[0010]
The cylinder lock can be arbitrarily set as long as the rotation angle of the inner cylinder necessary for the locking / unlocking operation is not excessively small, but it can be locked or unlocked at a rotation angle other than 90 degrees or 180 degrees. Since the angle position of the keyhole after the operation is different and the usability is deteriorated, the rotation (operation) angle is determined as described above in a normal lock.
[0011]
However, as will become apparent later, the present invention can also be applied to locks having any operation angle other than 90 degrees and 180 degrees.
[0012]
1 to 4, reference numeral 1 denotes an outer cylinder of a drawer lock of the office desk, and reference numeral 2 denotes an inner cylinder. In addition, although the slot which accommodates a tumbler, or the spring hole which accommodates a tumbler spring is opening in the outer peripheral surface of the inner cylinder 2, in order to avoid drawing becoming complicated in the example of illustration, illustration of these opening is shown. Omitted.
[0013]
In the illustrated embodiment, the relative position in the axial direction of the inner cylinder 2 with respect to the outer cylinder 1 is as follows: a post 9 and a step 1a (see FIGS. 2 and 3) formed at the open end of the outer cylinder 1. Determined by the engagement.
[0014]
A display ring 3 having a rectangular cross section is rotatably fitted to the outer periphery of the outer end (left end in FIGS. 2 and 3) of the inner cylinder 2.
[0015]
As shown in FIGS. 3 and 5, a part of the outer surface of the display ring 3 having a serpentine shape has an angle α (see α in the illustrated embodiment) along the circumferential direction. = 45 degrees) are provided in a row.
[0016]
And two different display portions corresponding to the locked state and the unlocked state, respectively, that is, the first display portion 4 indicating the locked state in the illustrated embodiment, are given different colors to both ends of these three sections. And the 2nd display part 5 which shows an unlocking state is divided and formed.
[0017]
However, in the illustrated embodiment, the cylinder lock is locked by rotating the joint key clockwise.
[0018]
Since the intermediate section 6 between the first and second display sections 4 and 5 only passes through the display window when the display is switched as will be described later, it is the same as the first or second display section. A color may be applied, a color different from these may be used, or a ground color of the display ring 3 may be used.
[0019]
Similarly, since the first and second display units 4 and 5 may have different colors, one of them may be the ground color of the display ring 3.
[0020]
The display ring 3 in the illustrated embodiment is made of, for example, a synthetic resin having a red ground color, and one of the first and second display portions 4 and 5 is red in the ground color, and the other is light blue by printing, for example. .
[0021]
In addition, as shown in FIG. 2, it is preferable to form a shallow step 7 while leaving the outer peripheral edge of the outer surface of the display ring 3 and to perform light blue printing or the like using the bottom surface of the step as the display surface. This is to prevent the display surface from rotating and being worn by sliding contact between the opening edge of the display hole of the outer cylinder cap and the display surface, as will be described later.
[0022]
Further, as clearly shown in FIGS. 2 to 4, the inner side (front side in FIG. 4) of the inner peripheral surface of the display ring 3 is cut out over a certain angular range (180 degrees in the illustrated embodiment), and the cross section is A rectangular floating notch 8 is formed.
[0023]
On the other hand, as shown in FIGS. 2 to 4, a hook 9 having a rectangular outer shape and a cross-sectional shape, for example, projects in the radial direction of the inner cylinder at the outer end of the outer peripheral surface of the inner cylinder 2. .
[0024]
The amount of protrusion of the stick 9 in the radial direction is set to be smaller than the depth of the floating notch 8, so that the stick 9 can freely move in the loose notch 8 with the display ring 3 fitted to the inner cylinder. .
[0025]
In the illustrated embodiment, the angle at which the tack 9 looks at the central axis of the inner cylinder in the circumferential direction is 90 degrees, and the difference between the angles at which the inner notch center axis of the loose notch 8 and the tack 9 looks at is 180 degrees-90. Degree = 90 degrees (2α).
[0026]
On the other hand, as shown in FIGS. 2 to 4, an outer cylinder cap 11 is attached to the outer end of the cylinder lock so as to cover it.
[0027]
This outer cylinder cap 11 has a circular shallow cup shape, and a circular opening 12 for allowing the outer end surface of the inner cylinder 2 to be viewed is formed at the center of the bottom surface. Thus, an arc-shaped display hole 13 (see FIGS. 1 and 3) is opened at an angular position of 12:00 in terms of the clock face.
[0028]
The display hole 13 allows the above-described display ring 3 to be viewed, and the radial position thereof coincides with that of the display ring 3.
[0029]
Further, the angle at which the display hole 13 looks at the center of the inner cylinder is about 45 degrees (α) in the illustrated embodiment.
[0030]
Furthermore, in the illustrated embodiment, rectangular support legs 14, 14 projecting radially from four locations on the opening edge of the outer cylinder cap 11 are integrally formed, and each of the support legs 14 is formed on the outer cylinder 1. The outer cylinder cap 11 is fixed to the outer cylinder 1 by caulking and is fitted into a fixing hole 15 (see FIG. 3) having a depth substantially equal to the thickness of the support leg 14 formed on the outer end surface.
[0031]
For example, as shown in FIG. 1, the caulking is performed by pressing or striking the small protrusion 16 formed in the opening of the fixing hole 15 after the support leg 14 is fitted in the fixing hole 15.
[0032]
In addition, it is desirable that the fitting between the display ring 3 and the outer cylinder cap 11 is relatively smooth, in other words, the fitting is slightly stopped and the fitting between the display ring 3 and the inner cylinder is loosened.
[0033]
When the present invention is applied to a cylinder lock of the type in which the lock key is rotated 180 degrees and the lock key is removed at the angular position, as shown in FIG. 5 and FIG. Convert to the clock face and place it at the 12 o'clock angle.
[0034]
Then, the relative angular position of the hook 9 integral with the inner cylinder with respect to the loose notch 8 is as shown in FIG. 6 in the direction of rotation when the hook 9 is locked (clockwise in FIG. 5 and counterclockwise in FIG. 6). In other words, the locking angle is set so that it can move 2α (90 degrees) so that there is a 2α play angle.
[0035]
When the lock / unlock display device according to the present invention constructed as described above is inserted into the key hole 17 (see FIG. 1) and the tumbler is aligned with the shear line, the combined key is rotated 180 degrees clockwise. And the inner cylinder 2 and the hook 9 rotate in the locking direction.
[0036]
At this time, since the inner cylinder hook 9 is only loosely moved in the floating notch 8 at the initial stage of rotation, only the inner cylinder 2 is rotated within the angle range of 90 degrees from the beginning of rotation, and the display ring 3 Left in the angular position.
[0037]
When the inner cylinder 2 rotates 90 degrees, as shown in FIG. 7, the stick 9 strikes one end of the idle cutout 8, and thereafter the inner cylinder 2 and the display ring 3 start to rotate integrally, The display ring 3 is rotated counterclockwise relative to the display hole 13 of the outer cylinder cap.
[0038]
Then, when the inner cylinder 2 has finished rotating 180 degrees, as shown in FIG. 8, the first display portion 4 indicating the locked state comes to the 12 o'clock angle position on the clock face, so the first display visible from the display hole 13 The lock state can be displayed by the color of the display unit.
[0039]
Then, when the key is pulled out with the inner cylinder placed at the locking angle position, the display ring 3 maintains the angular position, so that the lock display is maintained until the next unlocking operation.
[0040]
Similarly, when the key is turned in the opposite direction (unlocking direction: clockwise in FIG. 8), the display unit does not move in the first 90 degree angle range, as is apparent from FIG.
[0041]
When the tack 9 (inner cylinder) rotates 90 degrees, as shown in FIG. 9, the tack 9 abuts against the other end of the idle cutout 8, and when it exceeds 90 degrees, the display ring 3 is integrated with the tack 9. When the inner cylinder 2 starts to rotate clockwise and the inner cylinder 2 has finished rotating 180 degrees in the unlocking direction, the second display portion 5 indicating the unlocked state returns to the angular position of the display hole 13 as shown in FIG. . Therefore, the key is removed from the key hole at this angular position.
[0042]
When the present invention is applied to a cylinder lock of the type in which the unlocking key is turned 90 degrees and then turned back by the same angle and the key is removed, as shown in FIG. 7, for example, the unlocking stick 9 has a loose notch 8 in the locking direction. The relative angular position of the tack 9 with respect to the key hole 17 of the inner cylinder is set so as to abut against one end of the inner cylinder.
[0043]
In this state, when the key is inserted into the key hole 17 and the inner cylinder 2 is rotated in the clockwise direction (counterclockwise in FIG. 7) for locking, the tack 9 does not move in the floating notch 8 and is directly integrated with the display ring 3. When the inner cylinder is turned 90 degrees, as shown in FIG. 8 and as described above, the display ring is also turned 90 degrees and the first display portion 4 indicating the locked state is connected to the display hole 13. Align.
[0044]
When the combined key is turned 90 degrees from this state, as shown in FIG. 9 and as described above, only the stick 9 moves freely in the loose notch 8 with the display ring 3 left at the angular position shown in FIG. Then, it returns to the angular position shown in FIG.
[0045]
When the key is removed in this state, the display ring 3 maintains its angular position, so that the lock display is maintained until the next unlocking operation.
[0046]
When the key is inserted into the keyhole for unlocking and turned counterclockwise (clockwise in FIG. 9), as is apparent from FIG. 9, the display ring 3 is directly rotated integrally with the inner cylinder, When the inner cylinder 2 rotates 90 degrees, the second display unit 5 is aligned with the display hole 13 as shown in FIG.
[0047]
When the combined key is turned 90 degrees from this state, only the stick 9 moves in the loose notch 8 while leaving the display ring 3 in the angular position shown in FIG. Return to the angular position.
[0048]
As described above, the present invention is suitable for a cylinder lock having an α of 45 degrees that is widely used. However, according to the purpose, the cylinder lock can be rotated, for example, at a fixed angle of 45 degrees and turned back at the same angle. Needless to say, the present invention can also be applied to this type of cylinder lock.
[0049]
【The invention's effect】
As is apparent from the above description, the present invention is configured such that a display ring is rotatably fitted to the outer end outer peripheral portion of the inner cylinder, and the inner cylinder is respectively formed on the outer surface of the display ring along the circumferential direction thereof. Three sections with the angle α looking at the central axis are connected in series, and the two ends are colored differently to provide two display sections corresponding to the locked state and the unlocked state respectively. A loose notch is formed on the inner side of the peripheral surface over a certain angular range, and a hook that is slidably engaged with the loose notch is provided at the outer end of the outer peripheral surface of the inner cylinder. Since the difference in the angle at which the cylinder central axis is expected is 2α, there is an effect that it is possible to obtain a locking / unlocking display device that can handle two or more cylinder locks with different locking / unlocking operations by the same mechanism.
[0050]
In addition, since the display ring is rotatably fitted to the outer peripheral portion of the outer end of the inner cylinder, there are various effects such as making the display portion easier to see.
[Brief description of the drawings]
FIG. 1 is a front view of a cylinder lock provided with a locking / unlocking display device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is an external perspective view showing the components of a cylinder lock provided with a locking / unlocking display device according to an embodiment of the present invention, mainly showing the outside of each member.
FIG. 4 is an external perspective view showing the components of a cylinder lock provided with a locking / unlocking display device according to one embodiment of the present invention, mainly showing the inside of each member.
FIG. 5 is a front view of a display ring.
FIG. 6 is a rear view of the display ring for explaining a change in engagement between the loose notch and the tack, and shows an unlocked display state.
FIG. 7 is a rear view of the display ring similar to FIG. 6 and shows a state in which only the tack is loosened in the loose notch.
8 is a rear view of the display ring similar to FIG. 6 and shows a state in which the display ring is rotated to the lock display angle position. FIG.
FIG. 9 is a rear view of the display ring similar to FIG. 6 and shows a state where only the tack has moved in the idle cutout and returned to the standby angle position.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Inner cylinder 3 Display ring 4 1st display part 5 2nd display part 6 Intermediate | middle partition 8 Floating notch 9 Stick 11 Outer cylinder cap 12 Opening 13 Display hole

Claims (1)

A cylinder lock of the type in which the key inserted in the key hole at the time of locking is rotated by an angle of 4α and the key is pulled out at that angular position, and when unlocking, the key is rotated in the opposite direction of the same angle and the key is pulled out at that angular position, The lock key inserted in the keyhole at the time of locking is rotated by an angle 2α, turned back in the opposite direction to the same angle, the key is pulled out, rotated at an angle 2α in the opposite direction to that at the time of unlocking, and the same angle locking direction The lock and unlock states of the two types of cylinder locks that are turned back to the unlocked key can be displayed with the same mechanism, and from the outer cylinder outer end surface of the inner cylinder that fits coaxially with the outer cylinder of the cylinder lock. A display ring is rotatably fitted on the outer peripheral part of the outer end that protrudes slightly , and three sections each having an angle α that looks at the central axis of the inner cylinder are connected to the outer surface of the display ring along the circumferential direction. And set different colors on both ends of these three sections, Two display portions corresponding to the locked state and the unlocked state are provided, and a loose notch is formed over a certain angular range inside the inner peripheral surface of the display ring, while the outer peripheral surface outer end portion of the inner cylinder is formed, A hook protruding in the radial direction and movably engaged with the floating notch is provided, and a difference in angle between the floating notch and the inner cylinder center axis of the hook is 2α, while a shallow cup shape is formed on the bottom surface. Locking and unlocking of a cylinder lock, characterized in that an outer cylinder cap formed with an opening through which the outer end surface of the inner cylinder can be seen and a display hole through which the display part of the display ring can be seen is mounted so as to cover the outer end of the cylinder lock Display device.

Images