JP2500035Y2 - Locking device for sliding doors - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door locking device for locking and unlocking a sliding door.

[0002]

2. Description of the Related Art As a sliding door locking device for locking and unlocking a sliding door, Japanese Utility Model Publication No. 50-31331, Japanese Utility Model Publication No. 58-21866,
There are technologies described in Japanese Utility Model Publication No. 56-124152. FIG. 11 shows a case of a two-sliding door including a sliding door D ₁ that moves along the rail on the outdoor side and a sliding door D ₂ that moves along the rail on the indoor side. The device can be attached. FIG. 10 shows an example of a sliding door locking device, in which the outside body 1 is attached to the outer surface of the outdoor sliding door D ₁ , the back plate 2 is attached to the inner surface thereof, and the pillar is projectingly provided on the outside body 1. A screw hole is provided on the end surface of the screw 3, and a screw 4 penetrating the back plate 2 is screwed into this screw hole, and the outside body 1 and the back plate 2 are fastened to the outdoor sliding door D ₁ .

A screw hole 6 is provided on an end surface of a projecting mounting seat 5 provided on the outside body 1, and a screw 8 penetrating the hole of the holding case 7 is screwed into the screw hole 6 so that the holding case 7 has a hole. A cylinder lock 9 is housed inside. The rotor 10 of the cylinder lock 9 is provided with a key hole on the end surface exposed from the hole 11 of the outside body 1, and when the key K is inserted into the key hole, the rotor 10 of the cylinder lock 9 becomes rotatable. A support shaft 13 is provided so as to extend through the tip of the rotor 10, and one end of a square shaft-shaped connecting shaft 14 is pivotally attached to the support shaft 13.

A slide frame 16 is provided so as to be able to move up and down inside a lock case 15 provided inside the sliding door D ₂ , and a knob 17 protruding from a bending wall 16a of the slide frame 16 is provided on the lock case 15. Pick 1 from the hole 18
The slide frame 16 can be lifted and lowered by the hand holding the slide frame 7.

A hub 20 is rotatably fitted into a hub set plate 19 fixed to the inner wall surface of the lock case 15, and a pinion 21 provided on the outer peripheral surface of the hub 20 is a rack 22 provided with a slide frame 16. Mesh with the hub 20
An engaging hole 23 formed in a square hole is provided at a position facing the connecting shaft 14 on the end surface of the. Further, a sickle 25 is pivotally attached to a shaft 24 provided in the lock case 15, and an engagement pin 27 provided in the slide frame 16 is inserted into a long hole 26 provided in the sickle 25.

When the key K is inserted into the key hole of the cylinder lock 9 provided on the outside body 1, the tumbler pin pressed by the key K moves in the radial direction and the end face of the tumbler pin is the rotor 10 of the cylinder lock 9. The rotor 10 of the cylinder lock 9 becomes rotatable in conformity with the shear line which is the outer peripheral surface of the cylinder lock. When the key K is pushed in, the connecting shaft 14
Is engaged in the engagement hole 23 of the hub 20 and the key K is rotated, the hub 20 is rotated, the slide frame 16 having the rack 22 meshing with the pinion 21 of the hub 20 is lifted, and the sickle 25 is rotated by the shaft 24. Rotate counterclockwise about the fulcrum,
Engages with the back plate 2 to lock the sliding door locking device.

Next, when the pressing force of the key K is released, the rotor 10 returns to the old position and the connecting shaft 14 is disengaged from the engaging hole 23. Next, the key K is rotated to return the rotor 10 to the original angle, and the key K is pulled out. To unlock the sliding door locking device, press the key K to engage the connecting shaft 14 in the engagement hole 23 and rotate in the unlocking direction, the slide frame 16 descends and the sickle 25 moves the shaft 24. Rotating clockwise as a fulcrum, the sickle 25 separates from the back plate 2 and the lock case 1
Immersed in 5 and unlocked. In addition to the above-mentioned conventional technique, there is also a cylinder lock made up of a disk tumbler, in which the key K is inserted and the connecting shaft is rotated by 180 degrees to lock the cylinder, and the cylinder is withdrawn without returning to the original angle. .

[0008]

Since the key K is pulled out without returning the rotor after the locking operation, the anti-theft property is deteriorated because it is composed of a disc tumbler. After the operation, the lock device for returning the key K to the original position is operated by inserting the key K, rotating the rotor 10 in the locking direction, and temporarily releasing the engagement between the connecting shaft 14 and the engagement hole 23. Rotor 1
After pulling back 0, the rotor 10 is returned to the original angle and the key K is removed to complete the locking operation. When unlocked, the connecting shaft 14 does not coincide with the engaging hole 23, and in order to push the rotor 10, the connecting shaft 14 must be inserted into the engaging hole 23 after adjusting the angle. Thus, there is a problem that the operation is complicated and annoying. The present invention is intended to solve such problems, and provides a locking device for a sliding door that can be easily locked and unlocked.

[0009]

In order to achieve the above object, the present invention is provided with a cylinder lock on a sliding door, one end of a connecting shaft is pivotally attached to the tip of the cylinder lock, and the cylinder lock is installed inside a mating frame. Inside the lock case, a slide frame can be raised and lowered,
A hub set plate fixed to the lock case is provided with a through hole, an inner hub rotatably fitted in the through hole is provided with a pushing protrusion, and the inner hub is fitted with the connecting shaft. An engaging hole is provided, an outer hub having a pinion is rotatably fitted to the outer peripheral surface of the inner hub, and the outer hub comes into contact with the pushing protrusion when the inner hub is rotated. An arcuate protrusion is provided, a rack that meshes with the pinion is provided on the slide frame, and the slide frame engages with a sickle pivotally attached to the lock case.

The hub is provided with a long hole continuous with the engagement hole, and the engagement hole has a retainer pin guided by the long hole and is biased toward the engagement hole by a spring. A retainer is inserted, a long hole for engaging the retainer pin is provided in the hole of the hub set plate, and the connecting shaft is brought into contact with the retainer by the movement of the connecting shaft so that the retainer pin is disengaged. Is configured. or,
The hub set plate is formed with a retainer pin having a hole and a long hole continuous with the hole and the long hole of the hub set plate, and the long hole of the retainer pin guide is opposite to the hub set plate. A tapered surface that widens is provided in the hub set plate, and when the retainer pin abuts the tapered surface, the spring guides the retainer pin into the elongated hole of the hub set plate.

[0011]

The locking device of the sliding door locking device configured as described above is as follows. First, when the key is inserted, the rotor of the cylinder lock becomes rotatable. Next, the key is rotated in the locking direction and then returned to the original angle. As a result, the connecting shaft engages with the engagement hole, the pushing protrusion of the inner hub that rotates with the connecting shaft pushes the outer hub, the outer hub rotates to the locking angle, and the outer hub rotates. It is transmitted to the sickle via the slide frame and locked by the rotation of the sickle. On the other hand, since the key is returned to the original angle, the inner hub and the connecting shaft are returned to the original angle, but the outer hub and the sickle are kept at the locked angle.
Next, the key is removed to complete the locking operation.

[0012]

Referring to the drawings for the embodiment of EXAMPLES present invention, FIG. 1 is a longitudinal sectional view of the sliding door for the lock device mounted on the sliding door, the outdoor side outside the body to the outer surface of the sliding door D ₁ of the 1 is attached, the back plate 2 is attached to the inner surface, the screw hole 28 is provided in the end surface of the pillar 3 protruding from the outside body 1, and a bolt (not shown) penetrating the hole 29 of the back plate 2 is attached. Is screw hole 2
8 and the outside body 1 and the back plate 2 are fastened to the sliding door D _1, and the support arm 30 of the holding case 7 is formed in the screw hole 6 provided in the mounting seat 5 of the outside body 1. A screw (not shown) that penetrates the hole 31 is screwed into the holding case 7 so that the outside body 1
Attached to.

As shown in FIGS. 1 and 6, a holding case 7 is provided.
The cylindrical joint guide 32 is rotatably fitted into the inner peripheral surface 7a of the. On the inner peripheral surface of the joint guide 32, two protrusions 33 parallel to the axial direction are projected, and the protrusions 3
Two thread grooves 34 provided on the outer peripheral surface of the joint 12 are slidably fitted into the groove 3. The joint 12 has an engaging portion 35 extending in the axial direction, and the engaging portion 35 is inserted into an engaging groove 36 formed in the rotor 10 of the cylinder lock 9.

On the outer peripheral surface of the cylindrical case 37 of the cylinder lock 9, a protrusion 38 protruding upward is provided, and the holding case 7
The projection 38 is fitted into the opening 39 provided in the. The pin 40 penetrates the rotor 10 rotatably fitted in the case 37, and both ends of the pin 40 engage with the notch recesses 41 provided on the end surface of the joint guide 32. The tumbler pin 4 is inserted into the plurality of tumbler pin holes 42 provided in the rotor 10.
3 is inserted into the plurality of driver pin holes 44 provided in the case 37, a cover 45 for closing the outer opening is provided, and a spring 47 is provided between the driver pin 46 inserted in the driver pin hole 44 and the cover. And the tip of the driver pin 46 pressed by the spring 47 is inserted into the tumbler pin hole 42.
Has been inserted.

Then, when a key (not shown) is inserted into the key hole of the rotor 10, the tumbler pin 43 pressed by the key.
Pushes the driver pin 46, and the end surface of the tumbler pin 43 coincides with the shear line which is the outer peripheral surface of the rotor 10, so that the rotor 10 can rotate together with the joint guide 32, and the joint 12 can move in the axial direction. .

The support shaft 13 penetrating the joint 12 is inserted into a hole 48 provided at one end of the connecting shaft 14. Hole 4
Since the inner diameter of 8 is considerably larger than the diameter of the support shaft 13, the connecting shaft 14 can be tilted by a predetermined angle. A flange portion 50 is provided around the cylindrical spindle guide 49, and a conical taper portion 50 a is formed on an end surface of the flange portion 50. The hole 51 passing through the center of the spindle guide 49 has a connecting shaft 14
Is slidably inserted, and a spring 52 is inserted between the inner end portion of the holding case 7 and the collar portion 50. Therefore, the collar portion 50 is pressed against the end surface of the joint 12, and the tapered portion 50a is fitted into the circular recess 12a formed in the end surface of the joint 12, so that the axis of the connecting shaft 14 coincides with the axis of the rotor 10.

As shown in FIGS. 1 and 7, the slide frame 1 is provided inside the lock case 15 provided inside the sliding door D _2.
6 is provided to be movable up and down, and the retainer pin guide 5 is provided on the inner wall surface of the hub set plate 19 fixed to the lock case 15.
3 is fixed, a through hole 54 is provided in the hub set plate 19 and the retainer pin guide 53, a pin guide elongated hole 55 is provided above the through hole 54, and a pin guide elongated hole 55 of the retainer pin guide 53 is provided. Tapered surfaces 55a that expand toward the front side of the retainer pin guide 53 are formed on both side walls (see FIG. 5).

The hub 2 rotatably fitted in the through hole 54.
0 is constituted by an inner hub 56 and an outer hub 57 rotatably provided on the outer peripheral surface of the inner hub 56. A peripheral wall 58 is provided around one end of the outer peripheral surface of the inner hub 56.
A pushing protrusion 59 is provided on a side surface of the peripheral wall 58, a ring mounting groove 60 is formed in an intermediate portion of the outer peripheral surface, and a stopper ring 61 is elastically fitted in the ring mounting groove 60.
Then, the stopper ring 61 and the peripheral wall 58 form the outer hub 57.
Constrain the axial movement of.

An engaging hole 62 is provided in a central portion of the inner hub 56 at a position facing the connecting shaft 14, and an end surface of the engaging hole 62 has a guide inclined surface 6 that expands in the direction of the connecting shaft 14.
3 is formed, and the size of the engagement hole 62 is such that the connecting shaft 14 having a slight inclination angle can be inserted (see FIGS. 8 and 9).

A quadrangular prism-shaped retainer 64 is inserted into the engaging hole 62 (see FIG. 3), and the end of the retainer pin 65 penetrating the retainer 64 and protruding from the retainer 64 is provided at the other end of the inner hub 56. Long groove 66 and long hole for pin guide 5
5 (see FIG. 4), and the spring 67 is inserted between the retainer 64 and the hub set plate 19. Therefore,
In the retainer 64, the retainer pin 65 has the long hole 5 for guiding the pin.
5 is urged in the direction of insertion (to the left in FIG. 1).

An arcuate projection 68 is provided on the end surface of the outer hub 57.
The outer hub 57 rotates when both end surfaces of the arcuate projection 68 are pushed by the pushing projections 59.
A pinion 21 is provided on the outer peripheral surface of the outer hub 57, and the pinion 21 meshes with a rack 22 provided on the slide frame 16. A sickle 25 is pivotally attached to a shaft 24 provided with the lock case 15, and an engagement pin 27 provided on the slide frame 16 is engaged with a long hole 26 provided in the sickle 25.

The operation of locking the sliding door locking device configured as described above will be described. When the key K is inserted into the key hole of the cylinder lock 9, the rotor 10 of the cylinder lock 9 becomes rotatable, the connecting shaft 14 engages with the engagement hole 62 of the inner hub 56, and the retainer 64 resists the spring 67. Then, it moves to the right in FIG.

Next, when the key K is rotated in the locking direction, the retainer 64 inserted in the engagement hole 62 is rotated together with the inner hub 56 by the rotation of the connecting shaft 14, and the inner hub 56 is pushed. The protrusion 59 pushes the arc-shaped protrusion 68 of the outer hub 57, and the outer hub 57 rotates in the locking direction.

By rotating the outer hub 57 in the locking direction, the slide frame 16 having the rack 22 that meshes with the pinion 21 of the outer hub 57 rises, and the slide frame 1
The sickle 25 having the long hole 26 that engages with the engagement pin 27 of 6 rotates about the shaft 24 as a fulcrum and engages with the hole of the back plate 2 of the sliding door D ₁ to lock the sliding door locking device.

Next, when the key K is rotated to the original angle, only the inner hub 56 is rotated while the outer hub 57 is stopped, so that the sliding door locking device remains locked. Since the retainer 64 is pressed by the spring 67, the retainer pin 65 is pushed into the elongated hole 55 along the tapered surface 55a, the angle of the retainer 64 is adjusted, and the engagement hole 62 that accommodates the retainer 64 has a correct return angle. Adjusted to. When the connecting shaft 14 returns to the original angle, the returning angle of the engaging hole 62 that engages with the connecting shaft 14 is insufficient due to the gap formed between the connecting shaft 14 and the connecting shaft 14. An accurate return angle is adjusted by the retainer 64.

When the pushing force of the key K is released, the connecting shaft 14 is disengaged from the engaging hole 62, and the locking operation is completed.

To unlock the sliding door locking device, the key K is pushed to insert the connecting shaft 14 into the engaging hole 62, and then the key K is pressed.
When the lever is rotated in the unlocking direction, the inner hub 5 together with the connecting shaft 14
6, the retainer 64 is rotated, the inner hub 56 is the outer hub 5
7 is rotated in the unlocking direction, the slide frame 16 descends, and the long hole 2 engages with the engagement pin of the slide frame 16.
The sickle 25 having 6 rotates to sink into the lock case 15 and unlock.

Next, when the key K is returned to the original angle, only the inner hub 56 is returned to the original angle while the outer hub 57 keeps the locked position, and the pushing force of the key K is released.
When the connecting shaft 14 is disengaged from the engagement hole 62 and the key K is pulled out, the unlocking operation is completed.

Since the retainer 64 is pushed by the spring 67, the retainer pin 65 is inserted into the long hole for pin insertion along the tapered surface 55a, so that even if an impact is applied to the sliding door, the inner hub 57 is free to move. It does not rotate and is held at a regular return angle. Therefore, when the locking or unlocking operation is performed, the connecting shaft 14 is smoothly engaged with the engaging hole 62.

Although the above-mentioned embodiments have been described with respect to the sliding door locking device attached to the two-sliding door, they can also be used for the one-sliding door.

Since the present invention is constructed as described above, the steps of locking and unlocking operations are reduced as compared with the conventional case. Therefore, the conventional complicated locking and unlocking operations have become simple and easy to operate.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a locking device for a sliding door.

FIG. 2 is a sectional view taken along line CC of FIG.

FIG. 3 is a sectional view taken along line DD of FIG.

FIG. 4 is a sectional view taken along line EE of FIG. 1;

5 is a sectional view taken along line FF of FIG.

FIG. 6 is a perspective view of a cylinder lock and parts related thereto.

FIG. 7 is a perspective view of main parts provided in the lock case.

FIG. 8 is a partially cutaway front view showing a state in which a connecting shaft having an axial center offset is engaged with an engagement hole.

FIG. 9 is a partially cutaway plan view showing a state in which a connecting shaft with an axial center offset is engaged with an engagement hole.

FIG. 10 is a vertical sectional view of a conventional sliding door locking device.

FIG. 11 is a front view of a sliding door.

12 is a cross-sectional view taken along the line AA of FIG.

13 is a sectional view taken along line BB of FIG. 11.

[Explanation of symbols]

D ₁ Outdoor sliding door D ₂ Indoor sliding door 1 Outside body 2 Back plate 7 Holding case 9 Cylinder lock 10 Rotor 12 Joint 13 Spindle 14 Connection shaft 15 Lock case 16 Slide frame 19 Hub set plate 21 Pinion 22 Rack 25 Sickle 26 Long hole 27 Engagement pin 32 Joint guide 37 Case 48 Hole 49 Spindle guide 52 Spring 54 Through hole 55 Pin guide long hole 55a Tapered surface 56 Inner hub 57 Outer hub 59 Pushing protrusion 62 Engagement hole 63 Guide inclined surface 64 Retainer 65 Retainer pin 67 Spring 68 Circular projection

Claims (3)

(57) [Scope of utility model registration request] 1. A sliding door is provided with a cylinder lock, one end of a connecting shaft is pivotally attached to the tip of the cylinder lock, and a slide frame is provided so as to be able to move up and down inside a lock case provided in a frame on the other side.
A hub set plate fixed to the lock case is provided with a through hole, an inner hub rotatably fitted in the through hole is provided with a pushing protrusion, and the inner hub is fitted with the connecting shaft. An engaging hole is provided, an outer hub having a pinion is rotatably fitted to the outer peripheral surface of the inner hub, and the outer hub comes into contact with the pushing protrusion when the inner hub is rotated. A lock device for a sliding door, wherein an arcuate projection is provided, a rack that meshes with the pinion is provided on the slide frame, and the slide frame engages with a sickle pivotally attached to the lock case. 2. An elongated hole continuous with the engaging hole is provided in the hub, and a retainer pin guided in the elongated hole is provided in the engaging hole to urge the engaging hole toward the engaging hole. The retainer is inserted, the through hole of the hub set plate is provided with a long hole for engaging the retainer pin, and the connecting shaft is brought into contact with the retainer by the movement of the connecting shaft, thereby releasing the engagement of the retainer pin. The locking device for a sliding door according to claim 1, wherein 3. The hub set plate is formed with a retainer pin having a through hole and a long hole continuous with the through hole and the long hole of the hub set plate, and the long hole of the retainer pin guide is formed in the retainer pin guide. A wider tapered surface is provided on the opposite side of the hub set plate, and when the retainer pin abuts the tapered surface, the spring guides the retainer pin to the elongated hole of the hub set plate. The locking device for a sliding door according to claim 2.