JP5620429B2 - Dial lock - Google Patents

Description

  The present invention relates to a dial lock having a plurality of dials incorporated in a locker, a cabinet, etc., and more particularly, the present invention relates to a dial lock in which an unlock code string for unlocking is not easily stored by a third party. .

In general, a dial lock has a predetermined unlock code string stored in a storage mechanism. For example, a locker user rotates a plurality of dials to load an unlock code string when loading a locker. After aligning and unlocking, the knob operation is performed to open the door. After loading the locker and performing a knob operation to close the door, the dial is rotated again to break the unlock code string and bring it into a locked state.
When taking out the load from the locker, a plurality of dials are rotated to align the unlocked code strings to be in an unlocked state, and then a knob operation is performed to open the door. After taking out the load from the locker and performing a knob operation to close the door, even if the locker is empty, the dial is rotated again to break the unlock code string and keep it in the locked state.

  A typical dial lock has a structure in which a front plate is attached to an opening on a front surface of a body portion in which a lock mechanism is incorporated. A window hole for each dial is formed in the front plate, and the outer peripheral part of the dial faces each window hole to enable each operation of locking and unlocking. The code of each dial can be visually recognized from the outside. Particularly, in the case of a dial lock in which the unlock code string is fixed, the security function cannot be performed if the unlock code string is stored in a third party. Therefore, both when loading into the locker and when removing the load from the locker, after closing the door, it is necessary to rotate each dial to break the unlock code string into a locked state (for example, Patent Document 1).

JP 2010-37816 A

  However, especially when the load is taken out from the locker, the operation of breaking the unlock code string may be forgotten. In that case, the unlock code string is exposed, and the third party can use the unlock code string. It can be read and stored instantly. In addition, when loading the locker, in order to reduce the number of steps for the next unlocking operation, only one specific dial of the plurality of dials is rotated to break the unlocking code string. Things have been done. Assuming that the unlock code string is composed of 4 digits, the 3 digits of the unlock code string are always exposed, and the third party reads the 3 digits of the unlock code string. If memorized, the crime prevention function is significantly reduced because the remaining one digit can be easily unlocked by matching the dial.

  The present invention has been made paying attention to the above-mentioned problem. Even if all or part of the unlocking code string for unlocking is left undisrupted, the unlocking code string can be transferred to a third party. An object of the present invention is to provide a dial lock that can be read and stored immediately.

The dial lock according to the present invention includes a body portion in which a lock mechanism is incorporated, and a front plate that is attached to an opening on the front surface of the body portion and faces a plurality of dials so that each operation of locking and unlocking can be performed. The front plate is provided with a cover plate of a size capable of covering all the dials so that the signs of the respective dials cannot be seen through a hinge mechanism. The hinge mechanism has a bottomed bearing hole formed so as to face each other and a bearing portion integrally formed with the front plate at positions facing each other across all dials on the front plate, and opposed to each bearing portion. The shaft support hole that opens to the end position of the cover plate to be moved, and the round shaft portion of the tip that protrudes from each shaft support hole that is non-rotatable and slidably supported in each shaft support hole are the bearing holes of each bearing portion. Each is freely supported A shaft, and a spring is provided in a state in which the spring pressure to each pivot is compressed within the shaft support hole to act. The tip of the round shaft portion of each pivot is formed in a tapered shape such that a taper surface facing the opposite direction with the pointed tip edge as the top is widened toward the shaft circumferential surface, while each bearing A V-groove is formed at the bottom of the hole. When the cover plate is in a closed state, the taper surfaces of the round shaft portions of the pivots are in contact with the groove walls facing the V-groove, the tip edges are in contact with the groove bottom of the V-groove, and the lid is 90 degrees. When in the open state, the pointed edge is perpendicular to the groove bottom of the V-groove and straddles the groove opening. When the opening angle of the cover plate is larger than 90 degrees, the cover plate is pressed by the spring pressure of the spring. Is further biased in the opening direction, and when the opening angle is smaller than 90 degrees, a mechanism is formed to bias the lid plate in the closing direction by the spring pressure of the spring .

In the above-described dial lock, the cover plate is opened by rotating the cover plate with the end position of the cover plate facing each bearing as a fulcrum, so that all the dials are exposed. Operation is possible. Further, by rotating the cover plate in the reverse direction, the cover plate is closed and all dials are covered. Since all the dials are covered with this cover plate so that the codes of each dial cannot be seen, even if all or part of the unlocking code string for unlocking is left undisrupted, There is no possibility that the unlock code string is immediately read and stored by a third party.
Further, in this dial lock, when the cover plate is opened and the opening angle of the cover plate becomes larger than 90 degrees, the cover plate is further urged in the opening direction. Even if the cover is released, the lid plate does not close, and both hands can be used freely to facilitate unlocking and locking operations. Further, when the lid plate is closed and the opening angle of the lid plate becomes smaller than 90 degrees, the lid plate is biased in the closing direction, so that the lid plate is not half-opened and is stable in the completely closed state. .

  In a preferred embodiment of the present invention, the lid plate is supported by a hinge mechanism so that the upper end portion or the lower end portion of both side ends can be pivoted so as to be opened upward or downward with respect to the dials arranged side by side. In another preferred embodiment of the present invention, the right or left end of the upper and lower ends is hinged by a hinge mechanism so that the cover plate opens right or left with respect to the vertically arranged dials. It is supported rotatably.

  According to the present invention, even if all or part of the unlocking code string for unlocking is left undisturbed, all the dials are covered by the cover plate, so that the unlocking code string is a third party. There is no danger of being read and stored immediately.

It is a perspective view which shows the dial lock which is one Example of this invention. It is a side view of the dial lock of the state which opened the cover plate. It is a front view of the dial lock of the state which closed the cover plate. It is a bottom view of the dial lock with the lid plate closed. It is the side view which carried out the cross section of a part of dial lock of the state which closed the cover plate. It is a perspective view which decomposes | disassembles and shows the front plate and cover plate of a dial lock. It is sectional drawing which shows the structure of a hinge mechanism. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is the figure which looked at the bearing hole from the front. It is a top view which shows the relationship between the pivot which rotates an axis with opening and closing of a cover plate, and a bearing hole. It is a side view which shows the state of the pivot pivoted with opening and closing of a cover board. It is a perspective view which shows the dial lock of the other Example of this invention. FIG. 14 is a plan view of the embodiment of FIG. 13 with the lid plate open. It is a front view of the Example of FIG. 13 of the state which closed the cover plate. It is a perspective view which shows the dial lock of the other Example of this invention. FIG. 17 is a plan view of the embodiment of FIG. 16 with the lid plate open. FIG. 17 is a front view of the embodiment of FIG. 16 with the lid plate closed. It is a perspective view which shows the state which is the dial lock of another Example , and set the cover plate to the right opening. FIG. 20 is a perspective view showing the embodiment of FIG. 19 with the lid plate set to open left. It is a side view which shows the dial lock of the other Example of this invention. It is a top view which shows the dial lock of the other Example of this invention. It is a top view which shows the dial lock of another Example. FIG. 24 is a side view, partly in section, taken along line CC in FIG. 23.

1 to 4 show the appearance of a dial lock 1 having a lid opening / closing mechanism 2 according to an embodiment of the present invention. The state in which the lid plate 3 is opened in FIGS. 1 and 2 is shown in FIGS. The state in which the cover plate 3 is closed is shown respectively.
The illustrated dial lock 1 is attached to a door such as a locker, and a lock mechanism is incorporated in a hollow body 10 forming a rectangular parallelepiped, and an opening on the front surface of the body 10 as shown in FIG. 11 is provided with a front plate 7 made of synthetic resin. The front plate 7 is provided with a circular opening 70 and four rectangular window holes 71, dials 12 facing each of the window holes 71 and dials 12, respectively. The operation unit 14 is configured. The side-by-side dials 13 are operated to align and break the unlocking code string during unlocking and locking, and a plurality of codes (for example, numbers 0 to 9) are represented on the outer peripheral surface. Yes. A screw shaft 15 that rotates integrally with the knob 12 protrudes from the rear surface of the body portion 10, and a hook (not shown) is attached to the screw shaft 15 with a nut. The hanging metal moves up and down integrally with the forward / reverse rotation of the screw shaft 15, and is engaged with and disengaged from a receiving metal attached to the housing such as a locker.

  The unlocking code string of the dial lock 1 is stored in the storage mechanism. When the dial lock 1 is locked, when the unlocking code string is aligned by rotating the plurality of dials 13 of the dial operation unit 14, The handle 12 can be turned by turning the knob 12. If the unlocking code string is broken by rotating the dial 13 after the hanging metal fitting is engaged with the receiving metal fitting, the lock 12 is locked and the knob 12 cannot be turned. When unlocking, when the dial 13 is rotated to align the unlock code string, the unlocked state is obtained, and the knob 12 is turned to rotate the hook in the opposite direction to engage with the catch. Can be removed.

  On the dial operation unit 14 of the dial lock 1, a cover plate 3 made of synthetic resin for blindfold having a size capable of covering all the dials 13 is provided to be openable and closable. The cover plate 3 in the illustrated example covers only the four dials 13, but as shown in FIG. 22, the cover plate 3 covers both the four dials 13 and the knob 12. Also good. On the lower surface of the cover plate 3, a cylindrical portion 31 along the upper edge, a projecting edge portion 32 and a knob 33 along the lower edge, and a rib 34 that abuts between the adjacent window holes 71 and 71 of the front plate 7 are integrally formed. Has been. As shown in FIG. 7 and FIG. 8, the cylindrical portion 31 is hollow inside, has a partition wall 35 at the center of the length, and shaft support holes 36 a, which will be described later, on both sides of the partition wall 35. 36b is formed. The partition wall 35 constitutes the bottom of each shaft support hole 36a, 36b.

  The cover plate 3 is opened and closed by rotating around the both side ends of the cylindrical portion 31 and moving up and down in the front-rear direction, and both end portions of the cylindrical portion 31 are connected to the front plate via the hinge mechanism 4. 7 is supported. In the configuration of this embodiment, the lid plate 3 opens upward. Although not shown, the hinge mechanism 4 may be configured to form a cylindrical portion along the lower end edge on the lower surface of the cover plate 3 and rotate the both side ends thereof as fulcrums. The lid plate 3 is opened downward. Further, as in the embodiments of FIGS. 13 to 18 described later, a cylindrical portion along one side edge is formed on the lower surface of the lid plate 3 and the upper and lower ends thereof are rotated as fulcrums. In that case, the cover plate 3 is opened to the right or left.

  The hinge mechanism 4 has a function of urging the cover plate 3 in a further opening direction when the opening angle θ of the cover plate 3 is larger than 90 degrees, and urging the cover plate 3 in a closing direction when the opening angle θ is smaller than 90 degrees. The left and right bearing portions 72a and 72b projecting at positions facing each other across all the dials 13 on the upper surface of the front plate 7 and the both side ends of the cylindrical portion 31 of the cover plate 3 are opened. The left and right synthetic resin pivots 5a and 5b, which are respectively non-rotatable and slidably supported in the pivot support holes 36a and 36b, and the partition walls 35 and pivots 5a and 5b in the pivot support holes 36a and 36b. It comprises springs 6a and 6b interposed therebetween. As shown in FIG. 9, each of the shaft support holes 36a and 36b is a square hole having a square cross section in the radial direction. It is part 51. The partition walls 35 in the shaft support holes 36a and 36b are not necessarily indispensable. The partition walls 35 are eliminated, the two springs 6a and 6b are replaced with one spring, and the springs are used. You may make it interpose between the pivots 5a and 5b.

  The bearing portions 72a and 72b are integrally formed on the front plate 7, and are integrally formed with side edge frames 73a and 73b connected to the bearing portions 72a and 72b. As shown in FIG. 10, bottomed bearing holes 74 a and 74 b are formed at positions where the bearing portions 72 a and 72 b face each other, and the cylindrical portion 31 of the cover plate 3 is formed in each bearing hole 74 a and 74 b. The round shaft portion 52 at the tip of the pivot shafts 5a and 5b protruding from the opening end of the shaft is supported freely.

  As shown in FIGS. 7 and 8, the distal end portion of the round shaft portion 52 of each pivot 5a, 5b is formed in a tapered shape by tapered surfaces 53, 53 facing in opposite directions, and has a sharp pointed edge. Each taper surface 53, 53 has a skirt extending toward the shaft circumferential surface with 54 as a top. On the other hand, V-shaped grooves (hereinafter referred to as “V-grooves”) 75 are formed in the bottoms of the left and right bearing holes 74a and 74b, and when the cover plate 3 is closed, the round shaft portion is formed. The tapered surfaces 53 and 53 of 52 are in contact with the opposing groove wall of the V groove 75, and the pointed edge 54 is in contact with the groove bottom 76 of the V groove 75.

13 to 15 show the appearance of a dial lock 1 according to another embodiment of the present invention. FIG. 13 and FIG. 14 show the state in which the cover plate 3 is opened, and FIG. 15 shows the case in which the cover plate 3 is closed. Each state is shown.
In this embodiment, four dials 13 are arranged vertically, and the right and left end portions of the upper and lower ends of the cover plate 3 are arranged so that the cover plate 3 opens to the right with respect to the four dials 13 arranged vertically. Is rotatably supported by the hinge mechanism 4. Further, in this embodiment, when the cover plate 3 is opened over 90 degrees, a band-shaped depression is formed on the upper surface of the cover plate 3 on the side close to the hinge mechanism 4 so that the opening angle θ of the cover plate 3 is approximately 180 degrees. The portion 37 is formed over the entire length of the lid plate 3. Due to the presence of the indented portion 37, when the lid plate 3 is opened more than 90 degrees, the side edge portion of the front plate 7 enters the indented portion 37 so that the lid plate 3 can be sufficiently opened.

16 to 18 show the external appearance of an embodiment in which the lid plate 3 is opened to the left. FIGS. 16 and 17 show the state where the lid plate 3 is opened, and FIG. 18 shows the state where the lid plate 3 is closed. , Respectively.
In this embodiment, the left and right end portions of the upper and lower ends of the cover plate 3 are rotatably supported by the hinge mechanism 4 so that the cover plate 3 opens to the left with respect to four dials 13 arranged vertically. .
The hinge mechanism 4 in the above-described embodiment shown in FIGS. 13 to 15 and the embodiment shown in FIGS. 16 to 18 has the same configuration as that in the embodiment shown in FIGS. .

FIG. 19 and FIG. 20 show an embodiment in which the cover plate 3 is configured to be either right-open or left-open with respect to the dials 13 arranged vertically. As shown in FIG. 19, when the lid plate 3 is opened to the right, the right and left ends of the upper and lower ends of the lid plate 3 are rotatably supported by the hinge mechanism 4 having the same configuration as each of the above embodiments. As shown in FIG. 20, when the cover plate 3 is left-opened, the left end portions of the upper and lower ends of the cover plate 3 are rotatably supported by the hinge mechanism 4 having the same configuration as each of the above embodiments. Therefore, bearing holes 74a, 74a and 74b, 74b are respectively formed at left and right symmetrical positions facing each other across all dials 13 on the front plate 7.

Note that the bearing holes 74a and 74b on the unused side of the front plate 7, that is, in the case of the right-open lid plate 3 shown in FIG. 19, the left-end bearing holes 74a and 74b, and the left-open lid plate 3 shown in FIG. In this case, the bearing holes 74a and 74b on the right end side may be left open, but may be closed by pasting a blind sheet on the bearing holes 74a and 74b.
Although not shown, like the embodiment of FIGS. 19 and 20, by providing the bearing holes 74a and 74b at appropriate positions, the cover plate 3 can be opened upward or downward with respect to the dials 13 arranged side by side. It can also be configured.

In each of the above embodiments, the hinge mechanism 4 is provided at both end positions along the long side of the cover plate 3, that is, at both end positions of the cover plate 3 sandwiching the arrangement of the four dials 13. And as shown in the embodiment shown in FIG. 22 , the cover plate 3 is provided at both end positions along the short side of the cover plate 3, that is, at both end positions of the cover plate 3 with the dial 13 at one end interposed therebetween. It can also be configured to open in a direction perpendicular to the opening direction of each of the embodiments.

23 and 24 show an embodiment in which the cover plate 3 is a slide system. In the illustrated dial lock 1, guide portions 8 and 8 are formed on upper and lower edges of the upper surface of the front plate 7, and upper and lower edges of the cover plate 3 are formed in guide grooves 80 formed on opposing inner surfaces of the guide portions 8. Is configured to support the slide freely. A handle 81 protrudes from the upper surface of the cover plate 3, and a fingertip is hooked on the handle 81 to reciprocate the cover plate 3 in the left-right direction to open and close. In addition, the guide part 8 can also be formed in the right and left of the upper surface of the front plate 7, and in this case, the cover plate 3 is slid up and down to be opened and closed.

  In the dial lock 1 of the embodiment shown in FIGS. 1 to 12 described above, when the cover plate 3 is in a closed state, the dial operation unit 14 is covered by the cover plate 3, so Not visible from outside. Therefore, even if all or part of the unlocking code string for unlocking is left undisturbed, there is no possibility that the unlocking code string is immediately read and stored by a third party.

  When the cover plate 3 is in the closed state, the hinge mechanism 4 is provided with the left and right pivots 5a, 5b on the groove walls of the V grooves 75 at the bottoms of the left and right bearing holes 74a, 74b, as shown in FIG. The tapered surfaces 53 and 53 of the round shaft portion 52 are in contact with each other, and the pointed edge 54 of the round shaft portion 52 is in contact with the groove bottom portion 76 of the V groove 75 so that the closed state is maintained. FIG. 12A shows the directions of the tapered surfaces 53 and 53 and the pointed edge 54 of the round shaft portion 52 of the pivots 5a and 5b when the cover plate 3 is closed.

  When unlocking, when the handle 3 of the cover plate 3 is held open, the round shaft portions 52 of the left and right pivot shafts 5a and 5b pivot around the left and right bearing holes 74a and 74b, and the tip of the round shaft portion 52 is rotated. The edge 54 is pushed up along the groove wall of the V groove 75. When the opening angle θ of the cover plate 3 reaches approximately 90 degrees, the pointed edge 54 of the round shaft portion 52 is orthogonal to the groove bottom portion 76 of the V groove 75 as shown in FIGS. 11 (2) and 12 (2). Thus, the state is over the groove opening. In this state, the pivot shafts 5a and 5b compress the springs 6a and 6b and push them into the shaft support holes 36a and 36b, so that the spring pressure that the springs 6a and 6b try to return acts on the pivot shafts 5a and 5b. As a result of pressing the pointed edge 54 of the round shaft part 52 against the groove wall of the V groove 75, the state where the pointed edge 54 of the round shaft part 52 straddles the groove opening of the V groove 75 is maintained, and the cover plate 3 is opened. To be kept.

When the cover plate 3 is further opened and the opening angle θ of the cover plate 3 exceeds 90 degrees, the cover plate 3 is urged by the spring pressures of the springs 6a and 6b to open further, and each taper of the round shaft portion 52 is tapered. When the surfaces 53 and 53 come into contact with the V-grooves 75 of the bearing holes 74a and 74b, the cover plate 3 is in an open state of approximately 180 degrees. In this embodiment, as shown in FIG. 2, when the opening angle θ of the cover plate 3 reaches approximately 135 degrees, the cover plate 3 abuts against the front opening edge of the body portion 10 of the dial lock 1. Is kept open approximately 135 degrees.
11 (3) shows the relationship between the round shaft portion 52 of each pivot 5a, 5b and the V groove 75 when the cover plate 3 is opened 135 degrees, and FIG. 12 (3) shows the round shaft portion. The directions of the tapered surfaces 53, 53 and the tip edge 54 of 52 are shown.

  As described above, when the opening angle θ of the lid plate 3 is 90 degrees, the lid plate 3 is held in an opened state of 90 degrees, and when the opening angle θ exceeds 90 degrees, the lid plate 3 is 135 degrees. Since it is held in the open state, the dial can be operated by releasing the hand from the cover plate 3. When the dials 13 are rotated to align the unlock code strings, the dial lock 1 is unlocked, and the knob 12 is turned to rotate the screw shaft 15 to remove the hook from the bracket.

At the time of locking, the knob 12 is turned with the unlocked code strings aligned, the screw shaft 15 is rotated, and the hook 13 is engaged with the metal fitting, and then the dial 13 is rotated to unlock the code string. When the dial is broken, the dial lock 1 is locked.
Thereafter, the cover plate 3 is closed with the knob 33 of the cover plate 3, but when the opening angle θ of the cover plate 3 is smaller than 90 degrees, the cover plate 3 is biased in the closing direction by the spring pressure of the springs 6 a and 6 b. When the tapered surfaces 53, 53 of the round shaft portion 52 abut against the groove wall of the V groove 75 of the bearing holes 74 a, 74 b and the pointed edge 54 abuts against the groove bottom 76 of the V groove 75, the cover plate 3 is stable in a completely closed state.

  Each of the embodiments shown in FIGS. 13 to 20 has the same function as that of the above-described embodiments of FIGS. 1 to 12 and performs the same operation, and the description thereof is omitted here.

DESCRIPTION OF SYMBOLS 1 Dial lock 3 Cover plate 4 Hinge mechanism 5a, 5b Pivot 6a, 6b Spring 7 Front plate 8 Guide part 10 Body part 11 Opening part 72a, 72b Bearing part 74a, 74b Bearing hole 80 Slide groove

Claims (3)

A body portion incorporating a locking mechanism, and a front plate that is attached to an opening on the front surface of the body portion and faces the outside so that a plurality of dials can be locked and unlocked. In the dial lock in which the plate is provided with a lid plate of a size that can cover all the dials so that the sign of each dial can not be seen can be opened and closed via a hinge mechanism,
The hinge mechanism has a bottomed bearing hole formed so as to be opposed to each other and a bearing portion integrally formed with the front plate at a position facing each other across all dials on the front plate, and opposed to each bearing portion. A shaft support hole that opens to the end position of the cover plate, and a round shaft portion at the tip that protrudes from each shaft support hole and that is non-rotatable and slidably supported in each shaft support hole is provided in each bearing hole. It is composed of pivots that are supported to freely rotate, and springs that are provided in a compressed state in the shaft support holes so that spring pressure acts on each pivot,
The tip of the round shaft portion of each pivot is formed in a tapered shape such that a taper surface facing the opposite direction with the pointed tip edge as the top is widened toward the shaft circumferential surface, while each bearing the hole bottom of the hole is formed with a V groove, when the state in which the cover plate is closed to the groove walls each tapered surface of the round shaft portion of the pivot axis opposite the V grooves, the grooves of the tip edge V groove When the lid is in contact with the bottom, and the lid is opened 90 degrees, the tip edge is perpendicular to the groove bottom of the V groove and straddles the groove opening, so that the opening angle of the lid plate is When the angle is larger than 90 degrees, the mechanism is configured to urge the cover plate further in the direction of opening by the spring pressure of the spring, and to urge the cover plate in the direction of closing the cover plate by the spring pressure of the spring when the opening angle is smaller than 90 degrees. Dial lock that is made up. The upper end or lower end of each side end is supported rotatably via a hinge mechanism so that the lid plate is open upward or downward with respect to the dials arranged side by side. Dial lock. The right and left ends of the upper and lower ends are rotatably supported via a hinge mechanism so that the cover plate is opened to the right or left with respect to the vertically arranged dials. The dial lock described in 1.

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