JPH0354281Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a keyless locking device that can be locked and unlocked from outside by operating a push button without using a key.

(Prior art) An operating mechanism that freely interlocks the latch mechanism is provided on the indoor side, and an operating mechanism that freely interlocks the latch mechanism in the locking direction and unlocks and interlocks the locking mechanism in the unlocking direction. Keyless locking devices installed outside the room have recently been attracting attention.

In conventional keyless locking devices, the structure of the locking mechanism is particularly complex, which not only causes failures, but also makes the entire device bulky and too large to be installed on the door, making it unsightly. The image was very bad.

This is because the components of the lock mechanism, including the clearing means of the lock mechanism, are stacked in multiple layers and protrude beyond the door.

Therefore, the inventor of the present invention has made the locking mechanism, which is the heart of the keyless locking device, extremely compact by placing tumblers on both sides of the clear operating body and surrounding the tumblers with a slide with a frame structure. We have provided a keyless locking device that can be configured (see Japanese Practical Publication No. 59-30361).

This conventional device has an operating mechanism on the indoor side that freely interlocks the latch mechanism, and an operating mechanism that freely interlocks the latch mechanism in the locking direction and unlocks and interlocks the locking mechanism in the unlocking direction. In a keyless locking device installed on the outdoor side, a push button holder case with one side open is attached to the outdoor side of the door, and a lock mechanism is built inside the push button holder case. A substrate having a plurality of tumbler insertion holes on both sides of a guide groove of an operating body, a slide having a frame structure slidably superposed on the outdoor side of the substrate, and a tumbler support base superposed on the outdoor side of the slide. , an uneven portion in the slide direction is formed at a position corresponding to the inner circumference of the slide, and a clear actuating body having a spring for positioning the tumbler at each position of protrusion and retraction is slidably fitted in the guide groove. , one end of the clearing actuating body is engaged with the slide via the elastic force of a spring, and is biased in the protruding direction on both sides of the clearing actuating body, corresponding to the recesses of the uneven portion of the slide, respectively. Each of the tumblers is inserted and retracted into the tumbler support stand and the tumbler insertion hole of the board, and each of the tumblers is engaged with and disengaged from the positioning engagement groove that engages with the spring of the clear operating body and the uneven portion. A flexible lock part is formed respectively,
Further, the holder case is provided with a pushbutton that can individually operate each of the tumblers, and any one of the pushbuttons is linked to the clear actuating body via the tumbler, and the combination alignment of the plurality of pushbuttons is controlled by the tumbler. When the uneven portion of the slide and the locking portion of the tumbler are in an unlocked position, the slide can slide against a return spring, and when the slide is unlocked, the slide is slid in conjunction with an operating mechanism on the outdoor side. A gear transmission mechanism is built into the push button holder case between the slide and the operating mechanism.

(Problems to be Solved by the Invention) By the way, in the conventional device described above, the slide moves only in a direction perpendicular to the tumbler, so when the tumbler comes into contact with the slide when operating the push button, the contact state is felt by the finger. The combination alignment of the tumblers can be sensed from the outside by the touch of a finger. Therefore, there is a risk that the lock may be illegally unlocked by another person, and there is a problem with the safety of locking.

(Means for solving the problem) The present invention was made to solve the above problem, and its feature is that it can be slid by an outdoor operating mechanism that works with a latch mechanism. A locking slide with a frame structure, a tumbler clearing actuator placed in the center of the slide, and a plurality of locking slides arranged between the slide and the clearing actuator that can be engaged and disengaged and that appear and retract in a direction perpendicular to the slide. A keyless locking device comprising a tumbler and configured to lock the operating mechanism by combining and aligning an arbitrary number of tumblers, wherein a pin that slides into contact is provided on the front side of the slide in the direction in which the tumbler is retracted; A spring is provided to urge the slide in the direction in which the tumbler projects, and the slide is also movable in the same direction as the tumbler.

(Operation) According to the present invention, by pushing in a predetermined tumbler, the tumbler engages with the clear operating body and engages with the slide, and the operating mechanism is rotated from the outdoor side. However, since the slide is locked, this operating mechanism does not move and is in a locked state.

Therefore, when unlocking the lock, the tumbler and the slide are disengaged by pressing the push button corresponding to the preset combination of tumblers, and the slide becomes slidable. In this state, when the operating mechanism is rotated from outside the room, its shaft rotates, and the latch mechanism linked thereto is moved in the unlocking direction. By the way, when the tumbler is in contact with the slide in the locked state, when the push button is pressed, the tumbler and slide simultaneously move in the retracting direction by pressing the spring through the pin, Even when you press the push button, there is almost no difference and the touch feels the same to your finger, making it difficult to tell whether the tumbler is in contact or non-contact.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. Figures 1 to 5 show an assembled state, and Figures 6 and below show details of each component. In FIGS. 1 to 5, a latch mechanism 1 can be freely extended and retracted from the side end surface of the door 2, and can be freely engaged with and detached from a female latch receiving metal fitting provided on the fixed side (not shown).

Reference numeral 3 denotes an operating mechanism on the indoor side, and a decorative lid 4 that is open on one side and has a rectangular shape attached to the indoor side of the door 2.
The operating knob 5 is attached to the.

Reference numeral 6 denotes an operating mechanism on the outdoor side, which includes a knob 8 attached to a push button holder case 7 attached to the outdoor side of the door 2. The knob 8 and the knob 5 are coaxially aligned with each other both indoors and outdoors. and are respectively operatively connected to the latch drive shaft 9.

The latch drive shaft 9 has a flat plate shape, and the knob 5 on the indoor side.
has a plate-shaped engagement groove 10 into which one end of the latch drive shaft 9 is inserted, and the operating mechanism 3 on the indoor side is interlocked with this groove so that the latch mechanism 1 can freely move in and out.

The operating mechanism 6 on the outdoor side is provided with a safety mechanism 13 mainly composed of a ball 11 and a spring 12. The safety mechanism 13 is directly connected to a drive pinion gear 14 shown in FIG. The other end of the latch drive shaft 9 is engaged with the engagement groove 15 with some play.

That is, the knob 8 of the operating mechanism 6 freely moves the latch drive shaft 9 due to the play in the locking direction of the latch mechanism 1.
In the unlocking direction, a lock mechanism 16 is provided so that the lock mechanism 16 can be unlocked and interlocked.

The lock mechanism 16 is built into the push button holder case 7, and the guide groove 18 (first
(see Figure 0), a substrate 20 having a plurality of tumbler insertion holes 19 on both sides, a slide 21 which has a rectangular frame structure in the embodiment and which is slidably superimposed on the outdoor side of the substrate 20; It is composed of a tumbler support stand 22 superimposed on the outdoor side. The slide 21 has concave and convex portions 21A and 21B formed in the slide direction at positions corresponding to the inner periphery of the frame, and is biased toward the tumbler support base 22 by a spring 23 interposed between the slide 21 and the base plate 20, and is normally It is pressed against this support stand 22. In the present embodiment, a clear actuating body 17 having a positioning spring 26 having a projecting portion 25 formed on its upper part is slidably fitted into the guide groove 18 at each position in which the tumbler 24 is protruded and retracted.

Further, one end of the clearing actuating body 17 is engaged with the slide 21 through the elastic force of a spring 27, and both sides of the clearing actuating body 17 are engaged with the springs in correspondence with the recesses in the concavo-convex portion 23 of the slide 21. Each of the tumblers 24 urged in the protruding direction by the tumbler 28 is inserted into and retractably inserted into the tumbler support base 22 and the tumbler insertion hole 19 of the substrate 20.

The tumbler 24 is connected to the spring 2 of the clear operating body 17.
The tumbler 24 is formed in the push button holder case 7, and has two upper and lower positioning engagement grooves 29 that engage with the push button holder case 7, and a lock groove 30 that can be freely engaged with and disengaged from the uneven portion 23. A pushbutton 33 having a collar 32 is inserted into the button insertion hole 31 and can be operated individually via a pushbutton return spring 34.

As shown in FIG. 2, the pushbutton 33 has 10 display portions, numbered 1 to 0, and numbered X, X, etc. in this embodiment, corresponding to the button insertion holes 31, respectively.
Three display parts Y, Z and a clear display part marked C are formed on the surface of the push button holder case 7,
An arbitrary matching combination of 10 display parts and 3 display parts constitutes a tumbler for unlocking, and any operation other than the matching combination described above will not unlock the lock. The push button 33 inserted into the clear display section is operated by operating the clear actuating body 17 via the clear tumbler 24' via the cam 35 shown in FIG. 17 in this embodiment. It is possible.

That is, as shown in FIG.
4, in the set state, the locking groove 30 corresponds to the concave part in the uneven part 23 of the slide 21 (the upper tumbler in FIG. 5), and the locking tumbler 24
The push button 33 releases the springs 28 and 34, respectively.
When the locking groove 30 is pushed in against the force and the retracted position is achieved by the engagement between the engagement groove 29 and the spring 26, the locking groove 30 is located inside (inner part) of the concave part of the uneven part 23, and the protruding part 37 is engaged with the recessed portion against the spring 36 so as to make the slide 21 non-slidable.

On the other hand, the unlocking tumbler (lower tumbler in FIG. 5) is attached to the overhanging portion 37 in the set state.
A corresponds to a recess in the uneven portion 23, and the unlocking tumbler 24 is pushed in by the push button 33 against the springs 28 and 34, respectively.
When the engagement groove 29 and the spring 26 are engaged and the retracted position is achieved as shown in FIG. The tumbler 24 allows the slide 21 to slide against the spring 36.

Therefore, the codes 1 to 1 of the unlocking tumbler 24 are
Only when some of the 10 zeros and some of the three symbols X, Y, and Z are combined and aligned, the slide 21 can be slid against the spring 26.

Note that the combination alignment of the tumblers is based on the substrate 20.
Remove the back plate 38 that is removably attached to the spring 2.
8 and the tumbler 24 and can be changed to any desired combination.

Thus, the lock groove 30 and the protruding portion 37 constitute a lock portion 39.

40 is a gear transmission mechanism, and the slide 21
When the slide 21 is unlocked, the slide 21 can be slid against the spring 36 in conjunction with the operating mechanism 6 on the outdoor side.
1 is swingable about the pin portion 42 as a fulcrum.

As shown in FIG. 19, the sector gear 41 has attachment holes 44 for interlocking pins 43 at symmetrical positions on both sides of the pin portion 42, and the interlocking pin 43 inserted into either of the attachment holes 44 is attached to the bottom of the slide 21. engaged with the end face. Therefore, by selectively inserting the interlocking pin 43 into either one of the attachment holes 44, the locking device can be attached in correspondence with the left and right openings of the door 2.

Reference numeral 45 designates an operating knob return mechanism, which has a recess 46 for non-interference with the drive pinion gear 14, and has leg portions 47 on both sides of the gear 14, and is connected to each of the leg portions 47 of the L-shaped operating plate 48 shown in FIG. A return spring 49 is interposed between the latch mechanism 1 and the fixed side to return the operating knob 8 to its original state when the latch mechanism 1 operates the operating knob 8 in the projecting direction.

Next, with reference to FIG. 6 and subsequent figures, the structure, shape, etc. of each component and part will be explained, and the assembly procedure will be explained.

In FIG. 6, the decorative lid 4 has a rectangular frame structure with one side open, and has a mounting hole 50 at the top and bottom center, and a mounting hole 51 for the operating knob 5 is opened at the bottom, which corresponds to the operating knob mounting part of the canopy. A recess 52 for positioning the knob 5 is formed therein.

In FIG. 7, the push button holder case 7 has a rectangular frame structure with one side open, and a mounting hole 53 is provided in the center of the top and bottom.
The canopy part has 14 push button insertion holes 31 in this example, and the lower part has a mounting hole 54 for the operation knob 8, and the board 20 and tumbler support are provided on both sides of the upper and lower parts. Mounting hole 55 of stand 22
is formed.

Then, the decorative lid 4 is stacked on the indoor side of the door 2, and the push button holder case 7 containing the lock mechanism 16, gear transmission mechanism 40, etc. is stacked on the outdoor side of the door 2, and the mounting holes 50, 53 are fitted with countersunk heads. Both are attached to the interior and exterior of the door 2 by inserting the attached bolts 56.

In FIG. 8, the operation knob 8 is a circular cylinder with a U-shaped cross section, and has a mounting hole 57 on the inner core, and around the mounting hole 57, in this example, four ball receiving grooves 5 are formed.
8 is formed.

In FIG. 9, the operating knob holder 59 is a circular cylinder having an outer flange 60 at one end and a counterbore hole 62 with a rectangular recess 61 on the core. A spring housing hole 63 is formed.

Then, insert the operation knob holder 59 into the mounting hole 54 of the push button holder case 7, and
0 is brought into contact with the inner surface of the push button holder case 7, and as shown in FIG.

In FIG. 10, the board 20 has an external shape that can be fitted into the push button holder case 7, and has cutouts 65 at the top and bottom centers for escape of the mounting bolts 56, and at both the top and bottom sides. It has mounting holes 66 that correspond to the mounting holes 55 of the push button holder case 7, respectively.

Furthermore, rectangular tumbler insertion holes 19 are formed in the substrate 20 in a left-right divided manner in correspondence with the push button insertion holes 31, and a guide groove 18 for the clear actuating body 17 is formed in the center to allow the tumbler insertion. A spring housing hole 68 having a trapezoidal cross section is formed on one side corresponding to the hole 19 .

Further, four positioning recesses 69 and four mounting holes 70 are formed on the guide groove 18 side of the board 20, and furthermore, a support hole 71 for the sector gear 41 is formed.
The pin guide hole 72 is formed in an arc shape, and the support hole 7
1 has a support hole 73 for the drive pinion gear 14.
is formed.

Further, on the guide groove 18 side of the board 20, protrusions 84 for preventing the tumbler from falling are protruded from the upper and lower parts of each tumbler insertion hole 19, and the pushbutton return spring 34 is received on the protruding end surface of each of the protrusions 84. is formed. Four fitting recesses 83 for the slide biasing spring 23 are provided on the left and right outer sides of the protrusion 84, and the spring 23 is fitted so as to support the pin 93 as shown in FIG. The head of the pin 93 is slidably abutted against the slide 21, and biases the slide 21 in the tumbler projecting direction via the pin 93. Therefore, the slide 21 is configured to move in the same direction as the tumbler 24 within the recess 20A of the base plate 20, and when pushed by the tumbler 24, it moves together with the tumbler 24 in the direction of the pressed side. shi, tumblr 2
The state of contact between the slide 21 and the slide 21 is made to be obscured by the touch of the finger.

In FIG. 11, the back plate 38 has a flat plate shape that fits into the fitting recess 67 of the board 20, and has a mounting hole 70.
A mounting hole 74 having a countersunk portion is formed in correspondence with the tumbler insertion hole 19, and can be attached to the board 20 with a countersunk screw (not shown), and a spring receiver 75 is formed in correspondence with the tumbler insertion hole 19. A spring 28 having a conical coil shape is housed in the spring receiver 75 and the spring housing hole 68 as shown in FIG.

In addition, in FIG. 11, 76 is a hole that is externally fitted into the sector gear support hole 71.

In FIG. 12, the slide 21 is formed by punching out a flat plate, and has an uneven part 23 formed thereon, spring support protrusions 78 on both sides of the upper part, and a relief part for the clear actuating body 17 in the center of the upper part. A portion 77 is formed.

In FIG. 13, the tumbler support 22 holds the slide 21 between it and the base 20, and has a knob pin 79 on one side corresponding to the positioning recess 69 of the base 20 and a mounting hole 80.
It is attached to the board 20 with screws not shown.

Further, the tumbler support base 22 is formed with an insertion hole 81 for a protrusion 84 for preventing the tumbler from falling, and a guide groove 82 for the clear operating body 17 is provided on the knob pin side.

The clear actuating body 17 consists of a spring holder 85 shown in FIG. 14, and a spring 26 made of a strip material (see FIG. 15) that stands upright at the same interval as the uneven portion 23, and the dowel 86 of the spring holder 85 It can be fitted into a hole 87 formed at the base of the
A spring 26 can be attached to both sides of the spring holder 85, and a cam 88 corresponding to the cam 35 of the clear tumbler 24 is provided at the lower end of the spring holder 85.
are formed, and the clearing actuating body 17 fitted in the guide grooves 18 and 82 is made slidable against the spring 27.

The tumbler 24 for locking and unlocking is made of a flat plate as shown in FIG. 16, and has two positioning and engaging grooves 29 (upper and lower) on one side, and a locking groove 30 unevenly distributed on either the upper or lower side on the other side. , has spring support portions 89 on the upper and lower end surfaces. With this, by turning the tumbler 24 upside down and replacing it, it can be used both for locking and unlocking. Then, the projecting portion 3 of the tumbler 24
The lock portion 39 configured as shown in FIG.
Care is taken to avoid contact with the uneven portions 21A and 21B of the lock, and to prevent unauthorized opening of the lock by others.

Note that the upper part of the lower stage side of the engagement groove 29 is inclined,
The contact resistance of the spring 26 to the overhanging portion 25 during pushing is made small.

In addition, as shown in FIG. 17, a clear tumbler 2
4' is a flat plate having spring support parts 90 on the top and bottom and a cam 35 on one side, and when the cam 35 is pushed into the cam 88 of the clearing actuating body 17, the clearing actuating body 17 is slid. Ru.

In FIG. 18, the push button 33 has a rectangular cylindrical shape with an outer peripheral collar 32 at one end, and a spring storage hole 9 inside.
1, and the outer periphery flange 32 is the push button holder case 7.
They are respectively fitted into the insertion holes 31 so as to come into contact with each other from the inner surface of the tumbler support base 22, and when pushed against the spring 34, they can be inserted into the slits 83 of the tumbler support base 22.

In FIG. 20, the drive pinion gear 14 has an engagement groove 15 for the flat drive shaft 9 therein, and a square boss 92 is formed at one end.
is fitted into the square hole 61 of the knob holder 59.

Next, the effect will be explained.

The operating mechanism 3 on the indoor side can freely move in and out of the latch mechanism 1 via the latch drive shaft 9 regardless of the lock mechanism 16, but the operating mechanism 6 on the outdoor side releases the latch mechanism 1, that is, opens the door 2. lock mechanism 1
6 can be unlocked and operated.

That is, the knob 8 of the operating mechanism 6 is interlocked with the drive pinion gear 14 and the sector gear 41, the gear 41 is rotated about the pin portion 42, and the interlocking pin 43 is slid on the slide 21 against the spring 36. The door 2 is restrained by the lock mechanism 16, so that the locked state is maintained and the door 2 cannot be opened.

Even if you forcefully pry the knob 8 in the unlocking direction, the safety mechanism 13 will work and the knob 8 will simply spin idly.
The interlocking pin 43 is not swung.

Therefore, in order to unlock the lock, the combination of a plurality of push buttons 33 from 1 to 0 and a plurality of push buttons 33 of Therefore, the resident memorizes the combination matching number, presses the push button 33 corresponding to the number against the spring 33, and moves the tumbler 24 via the spring 34 to the spring 28. The pushed-in tumbler 24 is maintained by the engaging groove 29 being engaged with the overhanging portion 25 of the spring 26 of the clear actuating body 17.

If you press a number other than the one you have memorized by mistake, press the push button 33 (indicated by C) that corresponds to the clear tumbler 24' and press the clear actuating body 17.
The cams 35 and 88 cooperate to slide the tumbler 24 in the clearing direction (upward in FIG. 4), align the positions of the tumbler 24 and the spring 26 relatively, and clear the tumbler 24 via the spring 28. .

Incidentally, after the push button 33 corresponding to the stored number is pushed in as memorized, the push button 33 is returned to its old position by the spring 34.

Then, when the locking mechanism 16 is unlocked, the interlocking pin 43 slides on the slide 21 against the spring 36 via the gear transmission mechanism 40, and here,
The latch mechanism 1 can be interlocked in the unlocking direction via the latch drive shaft 9.

In addition, after the lock is unlocked, slide 21
is the spring 36, the clear actuating body 17 is pushed in by the spring 27, the tumbler 24 is returned to the old position by the spring 28, and the sector gear 41 is returned to the old position via the interlocking pin 43 by the return of the slide 21. become.

In addition, since the operation knob 8 can be interlocked with the latch drive shaft 9 in the direction of locking the latch mechanism 1 regardless of the lock mechanism 16, the lock can be freely locked from the outside.

By the way, since the slide 21 is urged and supported by the spring 23, the tumbler 24
When a part of the tumbler 24 is in contact with the tumbler 24, the tumbler 24 moves toward the substrate 20 side, and the feeling given to the finger of the operator is the same as when the tumbler 24 is not in contact with the tumbler 24. Therefore, regardless of the position of the tumbler 24, there is no difference in the feel obtained by operating the push button 33, so it is not possible to find the combination of the tumblers 24.

Further, since the tumbler 24 is provided with a cutout recess 39A in its lock portion 39 to avoid contact with the slide 21, the tumbler 24 of the slide 21
Together with the synergistic effect with 4, it becomes impossible for anyone trying to illegally open the lock to detect it.

(Effect of the invention) Since the keyless locking device according to the invention has the above-described configuration, the locking mechanism 16 can be locked by any number by matching the combination of the tumblers 24. Clear operating body 17
is placed in the center of the slide 21 having a frame structure,
By arranging the tumblers 24 that can be freely positioned on both sides of the clearing actuating body 17, the entire device can be designed to be very compact, the price is also very low, the operation is reliable, and assembly is easy. up,
Since the slide 21 can be moved in the direction in which the tumbler 24 appears and disappears, the tumbler 24 and slide 2
1 move at the same time even if they are in contact, and there is no difference in the feel given to the finger of the push button operator regardless of whether or not there is contact. Unauthorized unlocking can be completely prevented without allowing the user to detect the matching state of the 24 combinations.
This greatly contributes to improving reliability by ensuring locking stability.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of the entire assembled state, Fig. 2 is an external view from the outside of the room, Fig. 3 is a sectional view of the device, and Fig. 4 is a diagram of the internal structure. The front view and FIG. 5 are enlarged cross-sectional views taken along arrows A-A in FIG. Fig. 7 is a front view and partially cutaway side view of the lid, Fig. 7 is a front view, A-A longitudinal sectional side view, and BB, C-C sectional views of the push button holder case, and Fig. 8 is an outdoor operation knob. 9 is a front view, rear view, and sectional view of the knob holder, and FIG. 10 is a front view, rear view, A-A longitudinal sectional view of the board, and B.
-B, CC, DD sectional views, Figure 11 is the front view and back view of the back plate, AA, B-B sectional views, Figure 12
The figures are a front view and a plan view of the slide, Fig. 13 is a front view, rear view, side view, and plan view of the tumbler support base, and Fig. 14 is a front view, rear view, and side view of the spring holder that constitutes the clear actuating body. , A-A enlarged sectional view and detailed view of the lower part (cam part), Fig. 15 is a rear view, side view, and partially enlarged view of the spring constituting the clear operating body, Fig. 16 is a front view of the tumbler, and a detailed view of the lower part (cam part). A side view, FIG. 17 is a front view, side view, and plan view of the clear tumbler, FIG. 18 is a plan view and front view of the push button, and FIG. 19 is a front view and side view of the sector gear.
20 is a front view, left and right side views of the drive pinion gear, and FIG. 21 is a front view, bottom view, and side view of the actuating plate. 1...Latch mechanism, 6...Outdoor operation mechanism, 16
...Lock mechanism, 17... Clear operating body, 21...
...Slide, 22...Tumbler support stand, 23...
Spring, 24...Tumbler.

Claims (1)

[Scope of utility model registration request] A locking slide 21 having a frame structure that can be slid by an outdoor operation mechanism 6 that interlocks with the latch mechanism 1, a tumbler clearing actuating body 17 disposed at the center of the slide 21, and the slide 21 and the clearing actuating body. The operating mechanism 6 is comprised of a plurality of tumblers 24 which are disposed between the slide 21 and the slide 21 and can be engaged and disengaged, and which protrude and retract in a direction perpendicular to the slide 21, and the operating mechanism 6 is locked by combination and alignment with an arbitrary number of tumblers 24. In the keyless locking device, the slide 2
A pin 93 that comes into sliding contact with the slide 21 is provided on the front side of the tumbler 1 in the retracting direction, and a spring 2 that biases the slide 21 in the tumbler projecting direction via the pin 93.
3, and furthermore, the slide 21 is movable in the same direction as the tumbler 24.