JP2653973B2 - Tablets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock widely used for furniture such as a desk and a storage, a door of a building, and the like.

[0002]

2. Description of the Related Art Conventionally, a cylinder lock widely used as a lock attached to a drawer of a desk, for example, includes a cylinder body of a lock body having a plurality of pins biased inward in a radial direction.
A cylinder having a pin hole provided with a pin provided at a position that can be aligned with the pin and a key hole for inserting a key having irregularities is rotatably loosely fitted, and a plurality of keys are inserted by the key inserted into the cylinder. The pin in the pin hole moves the pin of the lock body in the counter-biasing direction so that the cylinder can be turned.

[0003] Such a cylinder lock cannot be discriminated from its appearance whether it is locked or unlocked until a key is inserted into a keyhole and operated. Therefore, a display plate for displaying the lock stop position and the unlock stop position of the cylinder is attached to the cylinder, and when the cylinder stops at any position, the lock body at that time can be checked from outside. There is known a configuration in which the display board can be stopped on the upper side.

[0004]

However, in the case of rotating the display plate simultaneously with the rotation of the cylinder as described above, the rotation space of the display plate is required, so that the lock portion of the cylinder lock itself is small. However, since the display panel becomes large, it becomes large as a whole. For example, in the case where the cylinder needs to be rotated by 180 ° between locking and unlocking, a space for the display board to pass around the half circumference of the lock body is required, and the cylinder lock as a whole has no display board as compared with the case where there is no display board. Then, about twice the area is required for installation. When the outer shape is large in this way, for example, in the case of attaching to the front of the top plate of the drawer provided on the sleeve of the desk, the attachment may not be possible because the installation range is limited.

[0005] An object of the present invention is to solve such a problem.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, the lock according to the present invention is a lock which is unlocked when the concave and convex of the inserted key and the lock fixing means are aligned with the cylindrical lock body having the lock fixing means urged inward. A rotating body having a keyhole into which the key that rotates in the main body can be inserted, and a locking position near the keyhole of the rotating body, and an unlocking position where the rotating body stops in a locked state and an unlocking state where the rotating body stops in an unlocked state. A permanent magnet having a different polarity provided in accordance with the position; and a permanent magnet which is disposed on the front of the lock body so as to be visible and inverts according to the polarity of the permanent magnet to display an indication corresponding to locking and unlocking. Display means having magnetism corresponding to the magnet.

The display means of the present invention includes a columnar display body made of permanent magnets having different polarities in a region bisected in the circumferential direction, and a display body provided at a position on the front of the lock body to rotate the display body. It is preferable that the display device has a concave portion for storing the lockable member and displays one of the locked state and the unlocked state when the display body is attracted by the permanent magnet of the rotating body.

[0008]

With such a construction, since the polarity of the permanent magnet attached to the rotating body is different between the locked position and the unlocked position, the display means displays the attractive force and the repulsive force of each permanent magnet. By the action of the above, the suction state is reversed. In other words, the display means is rotated by the repulsive force generated by the magnetic force between the permanent magnet of the rotating body and the display means at the position where the display means is provided, and the space required for the rotation is loosely fitted with the display means. It is enough if there is enough space to keep the condition. Therefore, the area required for the display means can be minimized, and the lock body can be made as small as possible.

Further, when the rotating body is not mechanically connected to the rotating body but is stopped at the locking position and the unlocking position, the attractive force of the permanent magnet acts on the displaying means. The display does not rotate due to external factors such as vibration, and the display can be stably maintained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

A cylinder lock 100 shown in FIG. 1 has a cylindrical lock body 1 having a body pin 1a serving as lock fixing means which is urged inward, an unevenness of an inserted key Ky and a body pin 1a.
and a cylinder 2 serving as a rotating body having a key hole Kh into which a key Ky that can be unlocked and rotated in the lock main body 1 can be inserted when a is aligned with the cylinder 2 near the key hole Kh of the cylinder 2 S-pole and N-pole permanent magnets 3 and 4 having different polarities provided respectively corresponding to a locked position where 2 stops in the locked state and an unlocked position where it stops in the unlocked state, and is visible on the front of the lock body 1. And a display means 5 having magnetism corresponding to the permanent magnets 3 and 4 for inverting according to the polarities of the permanent magnets 3 and 4 and performing a display corresponding to locking and unlocking. The basic structure of the lock body 1 and the cylinder 2 may be the same as those widely known in the art. What is shown in this embodiment is one example.

In this embodiment, the S-pole permanent magnet 3 has the S-pole located on the outer peripheral side and is attached to the cylinder 2. The N-pole permanent magnet 4 has the N-pole located on the outer peripheral side. This means that it is attached to the cylinder 2. Representative examples of the material of the S-pole and N-pole permanent magnets 3 and 4 and the magnet of the display 52 described later include ferrite, KS steel, MK steel, Alnico, Alcomax, and the like. In consideration of the case where the cylinder lock 100 is applied to furniture, it is desirable that the magnetic force of these magnets be 600 gauss or less. This is because if the magnetic force is too strong, it may adversely affect the storage of the floppy disk or the like, so that it is preferable to set the magnetic force to be sufficient and sufficient to reverse the display means 5.

The lock body 1 has, for example, a cylindrical shape in which chrome nickel plating is applied to zinc die cast, and a cylinder 2 is disposed in an inner cylinder in a loosely fitted state. A plurality of main body pins 1a are provided in the main body pin hole 1b formed by being urged by a coil spring 1c inward of the inner cylinder. When the key Ky is not inserted into the keyhole Kh, the main body pin 1a
, Which presses downwardly a cylinder pin 2b which is loosely fitted into a pin hole 2a of the cylinder 2 described later. Display means 5 is provided on the front upper part of the lock body 1.

The display means 5 includes a concave portion 51 provided in the lock body 1, a columnar display body 52 rotatably housed in the concave portion 51, and a transparent member for visually closing an opening of the concave portion 51. And a member 53. The concave portion 51 has a rectangular opening 51a, and has a substantially rectangular parallelepiped space narrower in the width direction than the opening 51a. Rear wall 51b of recess 51
Is a curved surface having an inner diameter slightly larger than the outer diameter of the display body 52 so that the display body 52 can easily rotate. The display body 52 is
A cylindrical permanent magnet having different polarities in a region bisected in the circumferential direction is housed in the concave portion 51 with its axis set in a direction perpendicular to the rotation axis of the cylinder 2.
When the cylinder 2 is attracted to the S and N pole permanent magnets 3 and 4 of the cylinder 2, one of locking and unlocking is displayed. That is, the display body 52 is formed of a columnar permanent magnet in which one half in the circumferential direction forms the S-pole portion 52a and the other half forms the N-pole portion 52b. Then, the S pole portion 52a
A red Rd indicating locking is provided on a half circumference of the surface of the N pole portion 52b adjacent to that portion and a half circumference of the surface of the N pole portion 52b adjacent to the portion.
Blue B1 indicating unlocking is applied to a half circumference of the surface of b. The transparent member 53 is made of acrylic, for example, and has a front surface formed of a convex curved surface, and functions as a convex lens.

The cylinder 2 is, for example, a cylindrical body having an outer diameter slightly smaller than the inner diameter of the inner cylinder portion of the lock main body 1 and formed by chrome-nickel plating on zinc die-casting. A pin hole 2a which is provided with an S-pole permanent magnet 3 and an N-pole permanent magnet 4 180 ° apart from each other and accommodates a cylinder pin 2b in a loosely fitted state on an extension of the S-pole permanent magnet 3 located on the upper side in the unlocked state. A key hole Kh communicating with the pin hole 2a is formed in the axial direction inside the body while being drilled toward the axis. The pin hole 2a is formed such that each of the pin holes 2a and the main body pin hole 1b are arranged in a straight line in an unlocked state, so that a tip end portion of the main body pin 1a can be fitted. The length of the cylinder pin 2b is determined in conformity with the unevenness provided on the key Ky, and when the key is pushed up by the key Ky, the head thereof has an inner cylindrical surface of the lock main body 1 and an outer peripheral surface of the cylinder 2. Are set so that they are flush with each other. A pin 6 is implanted at the rear end of the cylinder 2, and the lock plate 7 engaged with the pin 6 between the rear plate 1 n fixed to the rear end of the lock body 1 and the lock plate 7 of the cylinder 2 It is configured to reciprocate left and right according to the rotation.

In such a configuration, the indication of locking and unlocking is performed by a combination of the respective permanent magnets 3 and 4 of the cylinder 2 and the magnetic poles of the display body 52, as shown in FIG. . Specifically, first, when the cylinder 2 is stopped in the unlocked state, the tip of the main body pin 1a enters the pin hole 2a of the cylinder 2 and the rotation of the cylinder 2 is prohibited. The permanent magnet 3 stops at a position just above the cylinder 2. In this unlocking stop position, the S-pole permanent magnet 3 holds the N-pole portion 52b of the display body 52 with an attractive force, and the display body 52 displays blue Bl on the front surface of the lock body 1 and a transparent member. It becomes a state that can be visually recognized through 53.

Here, when the key Ky is inserted into the key hole Kh, the unevenness of the key Ky pushes up the cylinder pin 2b, the cylinder pin 2b pushes up the main body pin 1a, and the upper end of the cylinder pin 2b connects the lock body 1 to the cylinder. 2 so as to be in a rotatable state in alignment with the boundary surface. Next, when the key Ky is rotated, the S-pole permanent magnet 3 of the cylinder 2 moves, whereby the magnetic force acting on the display body 52 moves away, and the display body 5
The suction force to 2 becomes weak. And cylinder 2 is 180
When the N-pole permanent magnet 4 approaches the display body 52 and the N-pole permanent magnet 4 is positioned directly below the display body 52, the lower portion of the display body 52 is located at the N-pole portion 52b. Therefore, it rotates against the magnetic force of the N pole permanent magnet 4 of the cylinder 2 and displays the surface coated with red Rd. This rotation utilizes the repulsive force of the magnetic force between the N pole portion 52b of the display body 52 and the N pole permanent magnet 4 of the cylinder 2, and the display body 52 is housed in the limited space of the recess 51. Therefore, the S-pole and the N-pole are coupled by an attractive force and rotate until a stable state is reached. When the display body 52 completes the rotation, its S-pole portion 52a is located on the lower side, so that the display body 52 is coupled to the N-pole permanent magnet 4 of the cylinder 2 by the attractive force, and the rotation is completely stopped. I do.

As described above, although the rotation of the display body 52 responds to the rotation of the cylinder 2, the display body 52 is not mechanically connected to the cylinder 2 to obtain the rotation driving force, but is in a non-contact state. It turns. Therefore, a space for rotating the display body 52 can be reduced because a mechanism for transmitting the rotation driving force from the cylinder 2 to the display body 52 is not required. Further, the display body 52 changes the display in repulsion of S and N poles permanent <br/> permanent magnet 3 and 4 of the cylinder 2, and so holds the display state by magnetic force, stably without malfunction It can be displayed.

The present invention is not limited to the embodiment described above. For example, in the above-described embodiment, the lock using the main body pin 1a and the cylinder pin 2b has been described, but an annular disk may be used. In addition, instead of applying a different color, the display body 52 may display characters of unlocking and locking. Alternatively, it may be displayed with a background color and characters.

Further, in locking and unlocking the cylinder 2 by rotating the cylinder 2 by 90 °, the S and N pole permanent magnets 3 and 4 attached to the cylinder 2 are made to coincide with the direction of rotation and separated by 90 °. And place them. Further, the present invention may be applied to a cylinder lock using a reversible key.

In addition, the configuration of each section is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0022]

According to the present invention, as described in detail above, the display means is switched by utilizing the magnetic force of the permanent magnets provided on the rotating body and having different polarities, and the display of locking and unlocking is performed by the rotating body. Since the rotation is performed in a non-contact and non-contact manner, that is, in a state in which the display means is not mechanically coupled, the switching mechanism of the display means can be downsized, and a malfunction, that is, an erroneous state display can be eliminated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part of the embodiment and a partly exploded view;

FIG. 3 is a principle explanatory view showing the operation principle of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lock body 1a ... Body pin 2 ... Cylinder 2b ... Cylinder pin 3 ... S pole permanent magnet 4 ... N pole permanent magnet 5 ... Display means 51 ... Recess 52 ... Display body

Claims (2)

(57) [Claims] 1. A lock body which has a lock means urged inward and is unlocked when the concave and convex portions of the inserted key are aligned with the lock means. A rotating body having a keyhole into which the rotating key can be inserted, a lock position near the keyhole of the rotating body, and a locking position where the rotating body stops in a locked state and an unlocking position where the rotating body stops in an unlocked state. And permanent magnets having different polarities, each of which is provided so as to be visible on the front of the lock body, and inverts according to the polarity of the permanent magnet to perform a display corresponding to locking and unlocking. A lock comprising: magnetic display means. 2. A display device comprising: a column-shaped display body made of permanent magnets having different polarities in a region divided into two parts in a circumferential direction; and a display means provided at a position on the front of the lock body so that the display body can be rotated. 2. The lock according to claim 1, further comprising a concave portion for storing, wherein one of a locked state and an unlocked state is displayed when the display body is attracted by the permanent magnet of the rotating body.