JPH0396582A - Locking device for double sliding door - Google Patents

Abstract

PURPOSE:To ensure locking while preventing unjust release by installing a locking member engaged or detached with or from the engaging section of an external sliding door and the driving member of the locking member to an internal sliding door and mounting an operating piece for locking and an operating piece for release to the external sliding door. CONSTITUTION:A locking member 48 engaged or detached with or from the engaging section 42 of an external sliding door A and the driving member 50 of the locking member 48 are set up to an internal sliding door B, and an operating piece 25 for locking and an operating piece 26 for release are fitted to the external sliding door A. When a key 6 is inserted into a key hole formed to the external sliding door A and turned in the direction of locking, the driving member 50 installed to the internal sliding door B is operated through the operating piece 48 for locking, the locking member 48 is rotated and engaged with the engaging section 42 of the external sliding door A, and the stage of locking is brought. When the key 6 is revolved in the direction of release, the driving member 50 is worked in the direction of release through the operating piece 26 for release, the locking member 48 is detached from the engaging section 42 of the external sliding door A, and the state of release is brought.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a locking device for a double sliding door using two or more sliding doors.

[Conventional technology]

A locking device for a sliding door is described in Japanese Patent Publication No. 13709/1983.

This known technology has an external locking part on the outdoor side and an internal locking part on the indoor side on one side of the mating part of the sliding door, and it is raised and lowered by a cylinder lock from the outside and by a push button from the inside. By operating the drive plate and rotating the sickle-shaped locking plate attached to one sliding door, the locking plate is engaged and disengaged from the engagement hole provided in the other sliding door. [Problems to be Solved by the Invention] In the above-mentioned conventional technology, an operating mechanism such as a lock plate or a gear plate for operating the lock plate is provided in the outer lock part provided on the outer sliding door, and an inner lock part provided in the inner sliding door is provided with an operating mechanism such as a lock plate or a gear plate for operating the lock plate. The door is equipped with upper and lower pushbuttons that actuate the gear plate to lock or unlock the door, so it is necessary to align the pushbuttons and the gear plate correctly when closing the sliding door. Additionally, there was a risk that a thin rod could be inserted into the gap between the closed inner and outer sliding doors and manipulated to manipulate a gear plate, etc., in order to illegally unlock the door. The object of this invention is to provide a locking device for sliding doors that is easy to operate and can lock reliably by solving the problems of the conventional locking devices for sliding doors as described above. (Means for Solving L4N) In order to solve the above problem, the present invention provides the inner sliding door of a double sliding door with a locking member that engages and disengages from the engaging portion of the outer sliding door, and a driving member for the locking member, and the outer sliding door is a locking operation piece that moves the drive member in the locking direction in conjunction with the rotation of the rotor rotated by the key in the locking direction, and a locking operation piece that moves the driving member in the locking direction in conjunction with the rotation of the rotor in the unlocking direction, which is rotated by the key, and a locking operation piece that moves the sliding door in conjunction with the rotation of the key in the unlocking direction. To provide a locking device for a sliding door provided with an unlocking operation piece that moves a driving member in an unlocking direction.

Further, the inner sliding door is provided with a locking member that engages and disengages from the engaging portion of the outer sliding door, and a driving member thereof, and the outer sliding door is provided with a locking member that is pressed by the inner end of the key that protrudes from the inner end of the rotor that is rotated by the key.
An interlocking mechanism is provided that causes the tips of the locking operation piece and the unlocking operation piece to protrude in the direction of the inner sliding door, and when the key is removed, the tips of the locking operation piece and the unlocking operation piece are moved toward the outside sliding door. A sliding door locking device is provided with a restoring spring that can be retracted inward, and a guard frame is provided inside the inner sliding door that moves toward the outer sliding door and surrounds the locking operation piece and the unlocking operation piece of the outer sliding door. , the guard frame and the drive member are connected such that when the drive member is in the locked position, the guard frame advances toward the outer sliding door and its tip fits into the operating piece retractable window of the outer sliding door, and the drive member is released. The present invention also provides a locking device for a sliding door that is equipped with an interlocking mechanism that allows the guard frame to be retracted into the inner sliding door when the door is in the locked position. [Function] This invention has the above-mentioned configuration, and when the key inserted into the key hole provided in the outer sliding door is turned in the locking direction with the sliding door closed, the locking operation piece provided in the inner sliding door is turned. The driving member is activated to rotate the locking member and engage the engaging portion of the outer sliding door to be in the locked state.

Furthermore, when the key is turned in the unlocking direction, the unlocking operation piece operates the driving member of the inner sliding door in the unlocking direction, and the locking member is disengaged from the engagement part of the outer sliding door and returned to its original position. In addition, when the sliding door is in a bad condition as described above and the key inserted into the keyhole of the outer sliding door is pushed in against the restoring force of the spring, the interlocking mechanism works and the locking operation piece and the unlocking operation piece are activated. The tips of the operating pieces protrude toward the inner sliding door and can be locked or unlocked by turning the key. When the key is removed from the key hole, the restoring force of the spring pulls the tips of both operating pieces into the outer sliding door, opening the sliding door. There will be no problem in opening and closing. Furthermore, when the locking piece of the inner sliding door engages with the engaging part of the outer sliding door as described above, the guard frame of the inner sliding door advances toward the outer sliding door, fits into the operating piece of the outer sliding door, and extends outward. Even if I insert a thin rod through the gap between the sliding door and the inner sliding door, I cannot operate the unlocking operation piece. Furthermore, when the locking piece is retracted to the unlocked position, the guard frame is also retracted into the inner sliding door, making it possible to open the sliding door without any problem. [Example] In the example shown in the drawings, A is the outside sliding door on the outdoor side, and B is the outside sliding door on the outside side.
is an inside sliding door on the indoor side. A front plate 1 and a rear plate 2 are fixed to the outer and inner surfaces of the mating part of the sliding door A, a mounting member 3 is fixed between both plates 1 and 2, and a cylinder lock 4 is fixed within this member 3. The front end of the rotor 5 is exposed on the front surface of the front plate 1, and 8 is the rotor 5 of the cylinder lock 4.
It is a square shaft installed at the rear of the machine that can move forward and backward. As shown in FIG. 10, this square shaft 8 is provided with an r410, a round shaft part 11, and a plate-like part 12, and the plate-like part 12 engages with the keyhole 7 of the rotor 5 so as to be freely retractable. 11 engages and disengages from the round hole 13 of the rear plate 2. A guide frame 16 with a U-shaped cross section whose upper part covers the mounting member 3 is fixed to the inside of the front plate 1, and a pinion gear 17 coaxial with the square shaft 8 is rotatably attached to the rear plate of this frame 16. Mounted so that it cannot be moved in the axial direction. A square hole 18 as shown in FIG. 6 and FIG.
so that the pinion gear 17 is rotated. Reference numeral 19 denotes an elevating plate attached to the inside of the rear side plate of the guide frame 16. As shown in FIG. A guide rod 21 is provided integrally. Reference numerals 22 in FIGS. 1 and 10 indicate a pair of left and right support frames fixed to the inside of the front panel 1. Elongated holes 23 in the front and rear direction are provided in both support frames 22, and a horizontal shaft 24 is inserted into the elongated holes 23. Fits freely forward and backward in the forward and backward directions. 25 is a locking operation piece, 26 is an unlocking operation piece, and the rear ends of these operation pieces 25 and 26 are rotatably attached to the horizontal shaft 24. The tips of each of the operating pieces 25 and 26 are loosely fitted into the elongated holes 27 and 28 of the guide frame 16 and the elevating plate 19, so that they can freely move in and out of the operating piece window 29 provided on the rear plate 2. Further, a spring 35 is provided at the attachment part of the horizontal shaft 24 to open the operating pieces 25 and 26 vertically, and a pusher 37 is fixed to the upper end of the elongated hole 28 of the elevating plate 19. The operation piece 25 is pressed down when the is lowered. Reference numeral 36 denotes a pair of left and right interlocking levers whose upper ends are rotatably attached to both sides of the mounting member 3 via a shaft 30. Further, each pawl 31 provided inward on the rear side of the intermediate portion of both interlocking levers 36 engages with the rear side of the collar 10 provided on the square shaft 8 as shown in FIG. The long holes 32 in the vertical direction are loosely fitted into both ends of the horizontal shaft 24 as shown in FIG.
We will construct an interlocking mechanism to convey the information. Furthermore, as shown in FIG. 1, a restoring spring 38 is compressed between a connecting piece 33 that connects the intermediate parts of the left and right interlocking levers 36 together and a receiving piece 34 fixed to the lower rear end of the mounting member 3. When installed in this state, the lever 36 is given a restoring force in the direction of the front surface Fi1. An engagement hole 40 is provided near the bottom of the UKWJ board 2, and an engagement portion 42 consisting of a vertical shaft is fixed within a support frame 41 provided inside this hole 40. A front plate 44 and a rear plate 45 are also fixed to the front and rear surfaces of the joining part of the inner sliding door B, and a guide frame 46 with a rectangular cross section is fixed between the two plates 44 and 45. An opening 47 facing the retaining hole 40 of the rear panel 2 of the outer sliding door is provided near the lower part of the front part of the front panel 44 and guide frame 46. 48 is within the frame 46 at the position of the opening 47,
This is a sickle-shaped locking member rotatably mounted on a vertical shaft 4S, and has a vertical contact edge 43 as shown in FIG. The locking member 48 rotates about a shaft 49 and engages with the engagement portion 42 in the engagement hole 40 of the outer sliding door A, as shown by the chain line in FIG. In FIG. 2, 50 is a drive member having a U-shaped cross section that is mounted in the guide frame 46 so as to be able to rise and fall freely, and 51 is a spring that holds the member 50 upward or downward.

A cam 52 is fixed to the lower end of the driving member 50, and a roller 52 attached to the rear part of the locking member 48 is attached to the cam 52.
3 is crimped by the elasticity of the spring 54. (Fig. 9) Reference numeral 57 in Figs. 1, 2, etc. is a sliding plate that is attached to the vertical guide groove 58 inside the rear plate 45 so as to be able to rise and fall freely, and a knob 59 that is integrally provided on the outer surface of the sliding plate is attached. It loosely fits into the vertically elongated hole 60 of the rear plate 45 and protrudes to the outside. Further, a shaft 56 integrally provided on the inner surface of the sliding plate 57 is loosely fitted into a vertically elongated hole 62 of the guide frame 46 and engaged with an engagement hole 63 of the drive member 50. Reference numeral 65 denotes a locking member attached to the upper part of the guide frame 46 so as to be freely movable and retractable.The locking member 65 is pushed forward by a spring 66, and a projecting piece 67 on the front part thereof can freely come out and go out from the hole 64 of the front plate 44. A locking portion 70 that engages with and disengages from the pin 69 at the upper end of the drive member 50 on the lower side;
A slope 68 having a slope 71 above and below is provided. A projecting piece 72 is fixed to the front side of the intermediate portion of the driving member 50,
A guard frame 73 surrounding this protruding piece 72 is provided. The guard frame 73 is a vertically oriented rectangular member with its front and rear sides open, and is loosely fitted into a vertically oriented rectangular opening 74 provided at the front of the front plate 44 and the guide frame 46 so that it can move forward and backward, but cannot be raised or lowered. In addition, side plates 7 are provided at intermediate portions on both sides of the guard frame 73, as shown in FIG.
A pin 77 is provided on the outside of one plate 75, and this pin 77 is slidably engaged with a cam groove 78 of the drive member 50. Further, the outer end of the pin 77 passing through the cam groove 78 is loosely fitted into a horizontally elongated hole 79 provided in the side wall of the guide frame 46. The operation of the above embodiment will be explained below. Now, when the driving member 50 in the sliding door B is at the upper limit and the locking member 48 is in the retracted position as shown in FIG. 1, FIG. 3, and FIG.
The pin 69 at the upper end of the locking member 65 engages with the locking portion 70 at the upper end of the slope 68 of the locking member 65, thereby retracting the protruding piece 67 into the hole 64. Next, when the key 6 is inserted into the key hole 7 of the rotor 5 of the cylinder lock 4 and pushed in, the tip of the key 6 is pushed into the square shaft 8.
The pinion gear 17 is pushed out backwards.
The square shaft 8 engages with the square hole 18 of.

Furthermore, when the plate-like portion 12 is pressed by the key 6 as described above, the collar 10 integrated therewith is activated by the claws 3 of the left and right interlocking levers 36.
1, this lever 36 rotates toward the rear plate 2 against the spring 38 and pushes the horizontal shaft 24 at the lower end of the lever 36 toward the rear plate 2.

Therefore, the tips of the upper and lower operating pieces 25 and 26 protrude from the window 29 and fit into the guard frame 73 of the inner sliding door B, as shown in FIG.

While pushing the square shaft 8 in this way, use the key 6 to move the rotor 5.
When rotated in the locking direction, the pinion gear 1 is locked together with the square shaft 8.
7 rotates in the locking direction and lowers the elevating temporary 19 via the rack gear 20.

When the elevating plate 19 descends, the pusher 37 rotates the locking operation piece 25 downward as shown in FIG. 50 is held at the lower limit by a spring 51. When the drive member 50 descends as described above, the cam slope 55 of the cam 52 at the lower end pushes the roller 53 of the locking member 48, causing the member 48 to rotate about the shaft 49. The tip of the locking member 48 that has been rotated as described above is located at t in FIG.
1M, it protrudes from the opening 47 of the front temporary 44, fits into the engagement hole 40 of the rear plate 2, and engages with the engagement part 42 inside. When the locking member 48 is fully engaged with the engaging portion 42 in this way, the cam 52 receives the roller 53 at the vertical edge 61 at its end as shown in FIG. Even if it works, it will not return to the unlocked position. When the rotor 5 is turned to its original position in the completely locked state as described above and the key 6 is removed from the keyhole 7, the square shaft 8 is returned to its original position by the spring 38. For cylinder locks, key 6
In order to remove it, you must first turn the rotor 5 to its original position before locking, as described above. Therefore, when the key 6 is removed, the elevating plate 19 returns to the neutral position and the locking operation piece 25 returns to its original position and is removed from the protruding piece 72, but the locking member 48 remains engaged with the engaging portion 42. It is. Further, as the drive member 50 descends as described above, the cam groove 78 pushes the bottle 77 forward, and the guard frame 73
is moved toward the outer sliding door A and its outer end is fitted into the operating piece retractable window 29 of the outer sliding door A as shown in Fig. 2, so even if a thin rod is inserted between the sliding doors AB, the operating piece 25 will not work. , 26 cannot be touched.

Further, when the drive member 50 starts to descend during the above-mentioned locking operation, the bottle 69 is disengaged from the locking portion 70 at the upper end of the slope 68 of the lock member 65, so that the member 65 is pushed out by the spring 66. Therefore, the protruding piece 67 slightly protrudes from the hole 64, but as shown in FIG.
9 will not be locked by the locking portion 71 at the lower end of the slope 68.

Next, in order to unlock the lock by inserting the key 6 into the key 7L7 of the rotor 5 from the locked state shown in FIG. 2, the rotor 5 is rotated in the opposite direction to the locking state. When the key 6 is removed after the above-mentioned locking operation, the lifting plate 1S has returned to the neutral position, so the reversal of the rotor 5 causes the pinion gear 17 to rotate via the square shaft 8 in the opposite direction when it is locked, and the lifting plate 1S 19 rises, the lower end of the elongated hole 28 rotates the unlocking operation piece 26 upward. When the operation piece 26 rotates upward, its tip pushes up the protrusion 72 and raises the drive member 50, causing the slope 5 of the cam 52 to rise.
5 is released, and the locking member 48 is pulled into the front surface vi44 by the restoring force of the spring 54 and unlocked. In this case as well, after unlocking, return the rotor 5 to its original position and remove the key 6.
As shown in FIGS. 1 and 4, the upper and lower operating pieces 25 and 26 return to their neutral positions. Next, if you want to lock the door from inside the room without using a key, just push down the knob 59 and lower the sliding plate 57.

That is, when the sliding plate 57 is lowered, the shaft 56 integrated therewith pushes down the drive member 50 to lock the drive member 50 in the same way as when using a key, and when the knob 59 is pushed up, the lock is unlocked.

In addition, when the inner sliding door B is unlocked and the driving member 50 is raised,
Although the protruding piece 67 of the sliding door A is retracted, when the driving member 50 is pushed down with the knob 59 when the sliding door A is not closed, that is, the rear plate 2 of the sliding door A is not in front of the front plate 44 of the sliding door B, the pin 69 is on its way down, the locking part 71 at the lower end of the slope 68 of the locking member 65 pushed by the spring 66 engages with the pin 69 to prevent further descent of the driving member 50, and the locking member 48 opens. Prevent it from protruding from 47. [Effects of the Invention] As described above, in this invention, when the rotor is turned in the locking direction or unlocking direction with the key inserted into the keyhole of the outer sliding door, the locking operation piece or the unlocking operation piece inside the outer sliding door becomes the fulcrum. Rotate around the center and push and move the locking member of the inner sliding door,
Since the locking member is placed in the locked or unlocked position, simply by bringing the locking or unlocking operation piece of the outer sliding door into contact with a part of the drive member of the inner sliding door, the rotor of the lock provided on the outer sliding door is activated. Since the rotation can be transmitted to the driving member of the inner sliding door, the locking member can be operated reliably even if the outer sliding door and the inner sliding door are slightly misaligned. In addition, only when the inner end of the key is protruded from the inner end of the rotor, the tips of the locking and unlocking operation pieces protrude from the outer sliding door and fit into the inner sliding door, so the operating pieces are used to drive the inner sliding door. When the key is removed from the rotor, the tips of the locking and unlocking operation pieces retract into the outer sliding door, so there is no risk of damaging the operation pieces when opening and closing the sliding door.

Furthermore, the inner sliding door is provided with a guard frame that appears and retracts toward the outer sliding door in conjunction with the operation of the drive member, and when the door is locked, this guard frame surrounds the locking operation piece and the unlocking operation piece, and the inner sliding door Since the operating piece cannot be operated from between the door and the outer sliding door, unauthorized unlocking can be prevented.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of the locking device of the present invention, FIG. 2 is a partially longitudinal side view showing the same locked state,
Fig. 3 is a partially longitudinal side view showing the unlocked state, Fig. 4 is a central longitudinal side view of the same as above, Fig. 5 is a longitudinal sectional rear view taken along the line ■-■ in Fig. 4, and Fig. 6 is Fig. 4 V [--Vl line longitudinal sectional front view, Figure 7 is Figure 4 ■-■ Cotton cross-sectional plan view, Figure 8 is Figure 4 ■-■
9 is a cross-sectional plan view taken along line IX-■ in FIG. 4, and FIG. 10 is an exploded perspective view of the outer sliding door portion. A.
...Outer sliding door, B...Inner sliding door,
5...Lower, 6...Key 7...Key hole, 8...Square shaft, 10...Tsuba, 11...・・・・・・
Round shaft part, 12...Temporary part, 25...
... Locking operation piece, 26... Unlocking operation piece, 3
6... Interlocking lever 38... Restoration spring,
42... Engaging portion, 48... Locking member, 50... Drive member, 72...
Projection piece, 73...Guard frame, 77...
...Pin, 78...Cam groove, 79
・・・・・・Horizontal hole.

Claims (3)

[Claims] (1) The inner sliding door is provided with a locking member that engages and disengages from the engaging portion of the outer sliding door, and its driving member is provided, and the outer sliding door is provided with a locking member that engages and disengages from the engaging portion of the outer sliding door, and the outer sliding door is provided with the above-mentioned drive member in conjunction with the rotation of a rotor in the locking direction that is rotated by a key. Locking of a sliding door provided with a locking operation piece that moves a member in the locking direction and an unlocking operation piece that moves a sliding door drive member in the unlocking direction in conjunction with the rotation of the key in the unlocking direction. Device. (2) The inner sliding door is provided with a locking member that engages and disengages from the engaging portion of the outer sliding door, and a driving member thereof, and the outer sliding door is provided with a locking member that engages and disengages from the engaging portion of the outer sliding door, and the outer sliding door is pressed with the inner end of a key that protrudes from the inner end of a rotor that is rotated by the key. An interlocking mechanism is provided to cause the tips of the locking operation piece and the unlocking operation piece to protrude in the direction of the inner sliding door, and when the key is removed, the tips of the locking operation piece and the unlocking operation piece are Claim (1) providing a restoring spring that can be retracted into the outer sliding door
Locking device for the sliding door described. (3) Move forward and backward into the inner sliding door in the direction of the outer sliding door,
A guard frame surrounding the locking operation piece and the unlocking operation piece of the outer sliding door is provided, and the guard frame and the driving member are connected so that when the driving member is in the locked position, the guard frame advances toward the outer sliding door. Insert the tip into the operating window of the outer sliding door,
2. A locking device for a sliding door according to claim 1, further comprising an interlocking mechanism for retracting the guard frame into the inner sliding door when the drive member is in the unlocked position.