JPH0413338Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement of a locking device that is used, for example, in a door body of a safe or a general house, and is provided with multiple bolt pieces.

[Conventional technology]

In order to be effective in crime prevention, especially against destructive theft, we have installed multiple locking pieces in the front and rear directions, so that they can be used in cases where the front side of the door body is pried open with a screwdriver or crowbar, or when the locking part is destroyed. To combat destructive theft, the inventor has already
A locking device according to No. 58-21868 is proposed. That is, in the above prior art, an auxiliary bolt piece is arranged in parallel via a connecting rod at an appropriate location other than coaxial with the operating part on the back of a running metal fitting that controls the operation of the bolt piece, and this auxiliary bolt piece is interlocked with the aforementioned bolt piece. The structure is such that the door body is locked at the deepest part of the door body. In this design, the auxiliary bolt piece is provided on the back of the running bracket via the connecting rod, so the auxiliary bolt piece cannot be moved directly by the rotation of the operation part, but by the linear displacement of the running bracket. In conjunction with the movement, it is moved linearly in the locking and unlocking directions. Therefore, if the running fitting of the bolt piece breaks down and does not move normally, or if the running fitting and the connecting rod become disconnected, the auxiliary bolt piece cannot function at all. In addition, in order to rotate the operation part, it is necessary to simultaneously move the auxiliary bolt piece, which is connected to the running metal fitting with the bolt piece through the connecting rod, in a linear direction, so the connecting rod and the bolt piece become large. In this case, a large rotational force is required.

[Problem that the invention attempts to solve]

This device was newly created as a result of intensive research to solve the above problems, and its main problem is to lock or lock the bolt piece and the auxiliary bolt piece separately using a single operation part. To provide a locking device that is linearly displaced in an unlocking direction.

[Means to solve the problem]

In order to accomplish this task, this invention provides a locking device in which the rotational displacement of the operating part is converted into linear displacement to operate the bolt piece in a locked or unlocked state, which includes: (a) activating the bolt piece; An auxiliary running bracket is provided on the shaft of the operating part that penetrates and projects from the back of the running bracket. (b) The running bracket provided on the operating part and the auxiliary running bracket are arranged at separate positions so as to be able to move substantially in parallel. (c) The following technical measures are taken: auxiliary bolt pieces are arranged in parallel via the auxiliary running metal fittings;

[Effect]

The running metal fittings and the auxiliary running metal fittings are each provided separately and spaced apart from each other in parallel to the operating unit so as not to contact each other, so that the bolt piece and the auxiliary running metal piece control the rotation of the operating unit via the respective running metal fittings and the auxiliary running metal fittings. The displacement is converted into linear displacement. Therefore, even if there is an abnormality in the running bracket, the auxiliary running bracket can independently perform locking or unlocking operations.

【Example】

Preferred embodiments of this invention will be described below with reference to the drawings. Figures 1 and 2 show an example of a fireproof safe equipped with the locking device of this invention. This fireproof safe has a safe body 1 and a door body 2 pivotally attached to an opening of the safe body 1.
In addition, an operating section 4 formed by a dial lock 3 and a cylinder lock is provided. The combination lock 3 and the operating section 4 are inserted into a locking mechanism storage section 5 provided on the back surface of the free end of the door body 2, respectively. A conversion mechanism that converts the rotational displacement of the operating part 4 into a linear displacement in the locking or unlocking direction is provided in the running bracket 7 and inserted into the vertical engagement hole 71 at a position offset from the axis of the operating part 4. The protruding crank pin 6 is fitted and engaged with almost no gap. Therefore, when the combination lock 3 is set to a predetermined number and the operating part 4 becomes rotatable, when the operating part 4 is next operated (in this embodiment, a predetermined key is inserted and rotated), the rotational movement causes the crank. The pins 6 move in an arc with an enlarged curvature in the same direction. This arc-shaped movement of the crank pin 6 is converted into a linear movement in the left-right direction by engagement with the engagement hole 71, and is fixed to the tip of the running metal fitting 7 so that it can be retracted from the free end of the door body 2. It has a known configuration in which the formed bolt piece 8 can be moved forward and backward into and out of a locking hole 9 formed in a recessed position near the opening of the fireproof safe main body 1. In this invention, the crank pin 6 passes through the engagement hole 71 of the running metal fitting 7 and protrudes toward the back side of the running metal fitting 7, that is, the back side of the door body.
It engages with the engagement hole 21 of the auxiliary running metal fitting 10, which is arranged parallel to and spaced apart from. The engagement hole 21 of the auxiliary running bracket 10 is a vertical hole similar to the engagement hole 71 of the running bracket 7, and the arcuate movement of the crank pin 6 is controlled by the auxiliary running bracket 1.
It is converted into 0 linear motion. In addition, this auxiliary running metal fitting 10 has a door body 2 at its tip.
An auxiliary bolt piece 11, which is formed so as to be able to protrude and retract from the free end thereof and is arranged in parallel with the bolt piece 8, is fixed thereto, while the auxiliary bolt piece 11 is located at an opposing position at the deepest part near the opening of the fireproof safe main body 1. It is configured such that it can be moved forward and backward so as to be able to move in and out of an auxiliary latching hole 9' formed in a recessed manner. In this way, since the running metal fitting 7 and the auxiliary running metal fitting 10 are engaged with each other in the front and rear of the same crank pin 6, the auxiliary running metal fitting 10 is moved parallel to or substantially parallel to the running metal fitting 7. There is a need. Here, both the bolt piece 8 and the auxiliary bolt piece 11 are inlet/outlet holes 90 and 90 respectively provided in the side wall of the locking mechanism storage section 5 at positions opposite to the locking hole 9 and the auxiliary locking hole 9' of the safe body 1. Since the edge of ' serves as a guide part, it guides the auxiliary running bracket 10 so that it can move parallel to the running bracket 7. However, if the auxiliary running bracket 10 itself can also be guided, the cannulation will be carried out even more smoothly and reliably. It is preferable that the piece 8 and the auxiliary bolt piece 11 can be moved in parallel. Therefore, in this embodiment, the auxiliary running bracket 10 has a slight play in its front and rear positions with respect to the crank pin 6, and a restraining member such as an E-ring or a screw, which is an example of the restraining means 30, is fixed to the crank pin 6. ing. Therefore, it is preferable that the auxiliary running metal fitting 10 can move substantially parallel to the running metal fitting 7 with respect to the arc-shaped rotational movement of the crank pin 6. In addition, 16 in the figure is a back cover that closes the opening of the locking mechanism storage section 5. FIG. 3 shows a different embodiment of the restraining means 30. This restraint means 30 has an auxiliary shaft 61 formed of a concentric small-diameter shaft at the distal end of the crank pin 6 of the operating section 4, and allows the auxiliary shaft 61 to pass through the locking hole 21 of the auxiliary running fitting 10. The basic axis 60 of
If the size is set so that it cannot be inserted (the part of the running bracket 7 that penetrates the locking hole 71), the stepped part of the crank pin 6 will prevent the auxiliary running bracket 10 from moving in the direction toward the running bracket 7. You will be detained. Further, for movement of the running bracket 7 in the direction away from the running bracket 7, the aforementioned restraining member may be attached to the auxiliary shaft 61 that projects toward the back side of the auxiliary running bracket 10. FIG. 4 shows yet another embodiment of the restraining means 30. This restraint means 30 is a guide shaft 5 shown in FIG.
0 is used. This guide shaft 50 is a shaft that is fixed to the door body 2 and projects inside the locking mechanism storage section 5 in the front-rear direction, and the tip thereof is formed into a shaft 52 with a small diameter.
The small-diameter shaft portion 52 is fitted into the horizontal elongated hole 40 provided along the direction of movement of the base shaft portion 5.
This is of a known configuration in which the running metal fitting 7 is guided by engaging with a stepped portion that is a boundary between the small-diameter shaft portion 52 and the small-diameter shaft portion 52 . This guide shaft 50 is further extended as shown in FIG. 4 to have the function of guiding the auxiliary running metal fitting 10. That is, an auxiliary shaft portion 53 having an even smaller diameter is formed on the tip side of the shaft portion 52 having the smaller diameter. If the auxiliary running bracket 10 is formed with a horizontal elongated hole 41 that corresponds to the diameter of the auxiliary shaft portion 53 and has a width smaller than the small diameter shaft portion 52, the small diameter The auxiliary running fitting 10 engages and collides with the stepped portion at the boundary between the shaft portion 52 and the auxiliary shaft portion 53, thereby restraining the auxiliary running fitting 10 from moving in the direction toward the running fitting 7. In addition, as shown by the dashed line in FIG. 4, a connecting piece R
It is also possible to form a structure in which the running bracket 7 is integrally connected to the running metal fitting 7. In this embodiment, the guide shaft guides the running bracket 7 and the auxiliary running bracket 10, but it is also possible to provide separate guide shafts so that the running bracket 7 and the auxiliary running bracket 10 are guided by different guide shafts. You can. The locking device of this invention configured as described above includes an auxiliary bolt piece 11 that is attached to the bolt piece 8 which is activated to the locked or unlocked state by operating the operating part 4, and this auxiliary bolt piece 11 is locked at the deepest part of the door body 2, it can be locked more firmly than conventional locking devices, and furthermore, the bolt piece 8 and the auxiliary bolt piece 11 are spaced parallel to each other. Therefore, even if the locking piece 8 becomes inoperable, the locking function can be maintained by the auxiliary locking piece 11. In particular, even when the running metal fitting 7 of the bolt piece 8 does not operate, the auxiliary running metal fitting 10 operates and the lock can be locked using the auxiliary bolt piece 11, which is excellent in practicality. FIGS. 5 and 6 show the case where the locking device of this invention is used for a door body of an ordinary house, that is, a swing type door body. That is, the locking device main body 17 installed on the door body 2 is formed by a grip knob 19 that operates a latch bolt 18 and a cylinder lock or operation part 4 that operates a bolt piece 7 called a bolt, and a lock piece 7 (not shown) is formed. It has a configuration in which an auxiliary bolt piece 11 is attached via an auxiliary running fitting 10 (not shown) to the shaft portion of the operating part 4 that projects from the back side of the running fitting to be operated. By forming in this way, the same effects as those of the above embodiment can be achieved. Also,
In this invention, a double locking device is illustrated, but triple or quadruple locking can be achieved by arranging a plurality of auxiliary running metal fittings and auxiliary bolt pieces in parallel in the front-rear direction (backward direction).

[Effect of the idea]

According to this invention, an auxiliary bolt piece is installed at the back of the door body, which is a different surface from a normal bolt piece, and these bolt pieces and the auxiliary bolt piece are each connected to the operating part separately, so that A strong multiple locking effect can be obtained. Therefore, the auxiliary bolt piece can independently perform the locking function even when the running metal fitting of the bolt piece is broken and does not move normally, or when the running fitting and the connecting rod are disconnected. Further, since the auxiliary bolt piece is not connected to the bolt piece or the running metal fitting, the rotating operation of the operating portion can be smoothly performed without any risk of applying an extra load to the rotating operation.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of the main parts of a fireproof safe using the locking device of this invention, Fig. 2 is a perspective view thereof, and Figs. 3 a and b are perspective views and cross-sections of main parts showing different embodiments of the restraining means. 4 is a cross-sectional view showing another restraining means, FIG. 5 is a perspective view of the main part of a door using the locking device of this invention, and FIG. 6 is a side sectional view of the installed state. 2... Door body, 4... Operating unit, 7... Running bracket,
8... Bolt piece, 9... Latching hole, 9'... Auxiliary latch hole, 10... Auxiliary running bracket, 11... Auxiliary bolt piece, 30... Restraint means, 50... Guide shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a locking device in which the rotational displacement of the operating part is converted into linear displacement to operate the bolt piece in a locked or unlocked state, the back of the running fitting that operates the bolt piece. An auxiliary bolt piece is arranged in parallel with the shaft of the operating part that protrudes through the shaft through an auxiliary running bracket provided apart from the running bracket so as to be able to move substantially parallel to the running bracket, and the auxiliary bolt piece is interlocked with the aforementioned bolt piece. A locking device that locks multiple times at the inner part of a door body. (2) A restraint means is provided on the axis of the operation section to restrict the movement of the auxiliary running bracket in the front and back direction, and the auxiliary running bracket moves linearly back and forth in the locking and unlocking directions approximately parallel to the running bracket. A locking device according to claim 1 of the utility model registration claim, characterized in that: (3) The shaft of the operation part is formed to have a small diameter on the rear side, and the auxiliary running bracket having an engagement hole corresponding to the shaft of the operation part with the small diameter is engaged and approaches the position where the running bracket is disposed. The locking device according to claim 1, characterized in that the locking device is restrained so as not to be locked. (4) The running bracket and the auxiliary running bracket are provided with elongated holes, and guide shafts that are fitted into the respective long holes and guiding the linear movement of the running bracket and the auxiliary running bracket are fixed to the door body. A locking device according to claim 1 of the utility model registration claim, characterized in that: (5) The guide shaft that guides the linear motion of the auxiliary running bracket is formed with a small diameter on the rear side, and the auxiliary running bracket that has a corresponding guide hole is engaged with the small diameter shaft to adjust the arrangement position of the running bracket. The locking device according to claim 1, wherein the locking device is restrained so as not to approach the user. (6) The locking device according to claim 4, wherein the guide shaft guides the linear movement of only the auxiliary running bracket and has a spacer function.