JPH0220792B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric lock that is electrically unlocked by an unlocking signal generated by unlocking the lock using a predetermined operating means. It is something.

Conventionally, this type of electric lock was manufactured by the Special Publication Corporation in 1973.
Publication No. 36900, Special Publication No. 54-56599, Special Publication No. 1973
- As disclosed in Publication No. 56600, a member for operating the stopper from the outside and the stopper are connected via an electric clutch, and the electric clutch is operated by a special predetermined operating means. Electric locks that can be turned on and off are known.

However, these electric locks have the disadvantage that locking from the outside is troublesome because a special operation similar to unlocking is required even when locking from the outside.

The present invention was made in view of the above circumstances, and its purpose is to provide an electric lock that can be easily locked from the outside.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall sectional view, in which an internal lock knob 10 and an external lock knob 20 are rotatably mounted opposite to each other on the door body A.

The internal lock knob 10 has a large-diameter grip portion 11, and first, second, and third shaft rods 12, 1 that have successively smaller diameters.
3 and 14, a large-diameter hole 15 is formed in the grip part 11, and stepped holes 16 are continuously formed in the first, second, and third shaft parts 12, 13, and 14, respectively, for internal locking. The knob 10 has a hollow shape.

The external lock knob 20 has a grip portion 21 and a support shaft 2.
2, the support shaft 22 is rotatably supported in the hole 24 of the mounting seat 23, and the main drive side shaft 25 is integrally formed at the tip of the support shaft 22, and the main drive side shaft 2
5 faces into the stepped hole 16, and a driven shaft 27 is provided via an electric clutch 26.

The driven shaft 27 includes a gear 28 and a cylindrical body 29, the cylindrical body 29 is loosely fitted around the outer periphery of the third shaft rod 14, and the cylindrical body 29 has integral notch grooves 30, 3.
0 are formed to face each other in the radial direction, and a pair of pins 31, 31 fixed to the third shaft 14 are provided in the notch groove 30.
The heads 31a, 31a of the two are respectively fitted and connected so as to rotate as one.

The electric clutch 26 is a conventionally known electromagnetic clutch comprising a driving plate 26a, a passive plate 26b, and a solenoid 26c.The driving plate 26a is connected to the driving side shaft 25, and the passive plate 26b is connected to the gear 28. At the same time, the gear 28 is rotatably supported on the driving side shaft 25. Note that a powder type clutch or the like may also be used.

A bolt 32 is slidably attached to the door body A, and a support frame 33 thereof has a plurality of holes 34 formed at a predetermined pitch, and the gear 28 is meshed with the holes 34.

A button 40 is provided in the large diameter hole 15 of the grip portion 11.
The button 40 is urged in the protruding direction by a spring 42 via a collar plate 41 and comes into contact with a stopper 43, and a large diameter hole 46 of a large cylinder 45 is provided in the small diameter shaft portion 44 of the button 40. are fitted.

The cylindrical body 45 has a large diameter hole 46 and a continuous small diameter hole 47.
A stepped portion 48 is formed therein, and faces into the large diameter portion 16a of the front stepped hole 16, and an annular groove 49 is formed in the outer circumferential wall of the small diameter hole 47.

A sleeve 50 is fitted to the tip of the driving side shaft 25, and the sleeve 50 is pushed into the stepped portion 48 by a spring 51.
The sleeve 50 is formed with a pair of notch grooves 53, 53 facing each other in the radial direction, into which the small diameter protrusion 31b of the pin 31 is fitted, A pair of pins 54 fixed to the end portion 25a of the driving side shaft 25 are fitted into the notched grooves 53, respectively.

An annular groove 55 is formed in the first shaft rod 12,
A portion of the circumferential direction thereof is cut out to form a substantially semicircular connecting wall 56 and a substantially semicircular hollow portion 57, and a spring 60 is installed in the annular groove 55.
is installed.

The spring 60 has a substantially oval shape made of a spring material such as a piano wire, and is bent so that both longitudinal ends 61 and 62 overlap, and one end 63 is fixed to the cover body B, and the other end is fixed to the cover body B. The bent portion 64 is in contact with the outer peripheral wall 45a of the cylinder 45 from the hollow portion 57.

When locking and unlocking from the inside, when the internal lock knob 10 is rotated by holding the grip part 11 from the state shown in FIG. 1, the gear 28 rotates together with the cylindrical body 29 via the pin 31. Since the bolt 32 slides through the support frame 33, it can be locked and unlocked.

When locking the door from the outside, push the button 40 against the spring 42 as shown in FIG.

As a result, the cylindrical body 45 is pushed into the stepped hole 16, and as shown in FIG.
is fitted into the annular groove 49 to maintain the cylinder body 45 in the pushed-in position. In other words, the spring 60 and the annular groove 49
and becomes the stopper mechanism.

At this time, the notch groove 53 of the sleeve 50 is inserted into the pin 31.
Since the sleeve 50 does not match the pin 31, the spring 51 is compressed and only the cylindrical body 45 is pushed, so the spring receiver 52 and the stepped portion 48 are separated.

In this state, open the door, go outside, close the door, hold the grip part 21 and rotate the external lock knob 20. At this time, the electric clutch 26 is disengaged, so the gear 28 does not rotate.

As a result, the main drive side shaft 25 is rotated and the pin 5
4. The sleeve 50 is rotated through the notch groove 53, and the notch groove 53 and the pin 31 match.

When the notch groove 53 and the pin 31 match, the sleeve 50 is biased to move rightward in the figure by the spring 51 and
As shown in the figure, since the notch groove 53 is fitted and connected to the pin 31, the driving side shaft 25 is connected to the pin 54 and the sleeve 5.
0, is connected to the internal lock knob 10 via a pin 31. In other words, the sleeve 50, pin 54, pin 31, etc. constitute a mechanical clutch.

When the external lock knob 20 is further rotated from this state, the gear 28 is rotated together with the internal lock knob 10 and the bolt 32 slides, so that the lock can be locked.

Therefore, the lock can be locked by rotating the external lock knob 20 from the outside, which is the same locking operation as a normal locking operation.

Further, when the internal lock knob 10 rotates, the continuous wall 56 of the first shaft lever 12 rotates, and as shown in FIG. 6, the continuous wall 56 comes into contact with the other end 62 of the spring 60 and is pushed outward. Therefore, the bent portion 64 separates from the annular groove 49 of the cylindrical body 45.

As a result, the cylindrical body 45 is moved to the left in the figure by the spring 42 and returned to the state shown in FIG.
Since the notch groove 53 of 0 comes out from the pin 31, the driving side shaft 25 and the internal lock knob 10 become discontinuous.

Therefore, even if the external lock knob 20 is rotated once again by holding the external lock knob 20, the gear 28 does not rotate, so that the lock cannot be unlocked by holding the external lock knob 20 from the outside.

In addition, in the case of unlocking from the outside, when the unlocking operation is performed using a predetermined operating means, an unlocking signal is generated and the solenoid 26c of the electric clutch 26 is energized, and the drive plate 26a and the passive Board 26b
Since the electric clutch 26 is connected, the lock can be unlocked by holding the external lock knob 20 and rotating it.

Further, a driven side shaft 2 provided on the shaft rod 14 of the internal lock knob 10 and the driving side shaft 25 of the external lock knob 20 is provided.
Since it is connected to the cylindrical body 29 of No. 7 through the pin 31 and the notch groove 30, it is possible to connect the internal lock knob 10 and the external lock knob 20 even if their installation distances are slightly different. Easy to install on doors of different thicknesses.

From FIG. 7 onwards, a second embodiment is shown, in which a sleeve 50 is integrally formed on the button 40, integral grooves 70, 70 are formed in the sleeve 50 facing each other in the radial direction, and the pair of grooves 70 , 70 pin 7 inserted between
1 is fixed to the internal lock knob 10, a shaft 72 is inserted into the distal end side of the sleeve 50, and the pin 73 fixed to the shaft 72 is inserted into the pair of notched grooves 7 of the sleeve 50.
4 and 74, and the shaft 72 is fitted to the spring 75.
A funnel-shaped square recess 76 is formed on the end surface of the shaft 72, and the main drive side shaft 25
The pointed corner 25a fits into the rectangular recess 76, and the two are connected so as to rotate as one.

The groove 70 has a substantially hook shape with a first groove portion 70 ₁ extending in the axial direction and a second groove 70 ₂ oblique to the axial direction, and the second groove portion 70 ₂ has opposite directions in the circumferential direction. It's summery.

Note that the other structures are the same as those in the first embodiment, so the reference numerals are the same and the explanation will be omitted.

When the button 40 is pressed against the spring 42, the sleeve 50 is pushed, and the concave portion 76 of the shaft 72 fits into the tip angle 25a of the drive side shaft 25, so that the shaft 72 cannot be moved.

At this time, the positional relationship between the pin 71 and the groove 70 is 9th.
As shown in the figure, the pin 71 is located in the middle of the first groove portion 70 ₁ of the groove 70 .

Then, when the button 40 is further pressed, the shaft 72 does not move, so only the sleeve 50 is pushed in along the pin 73 and the notch groove 74 while pressing the spring 75.
The end wall 70' ₁ of the first groove 70 ₁ abuts the pin 71.

From this state, rotate the button 40 slightly to
When the groove 70 ₂ is fitted to the pin 71 and the button 40 is released, the sleeve 50 is pushed back by the restoring force of the spring, but as the second groove 70 ₂ moves along the pin 71, the sleeve 50 is slightly moved. The sleeve 5 rotates and comes into contact with the end 70' ₂ of the second groove 70 2 _.
0 is held in that position.

At this time, since the shaft 72 is pressed by the spring 75, the concave portion 76 and the square tip portion 25a of the driving side shaft 25 do not separate.

In this state, open the door, go outside, close the door, hold the grip part 21 of the external lock knob 20, and turn it. , since the internal lock knob 10 rotates via the pin 71, the gear 28
is rotated and the bolt 32 slides to lock the door.

When the external lock knob 20 is further rotated from the locked state, the bar 32 reaches the stroke end and cannot slide, so the internal lock knob 10 does not rotate and the pin 71 is in a fixed state, so the pin 7
1, the sleeve 50 rotates along
When the second groove part ₇₀₂ of the sleeve 50 moves along the pin 71 and is positioned on the first groove part _70'1 to the pin 71, the restoring force of the sleeve 50 and the spring pushes it back to the position shown in FIG. The driving side shaft 25 is separated.

Therefore, once the lock is operated from the outside, even if the external lock knob 20 is rotated, the gear 28 does not rotate and the lock cannot be unlocked.

Note that other operations are the same as those in the first embodiment, so explanations will be omitted.

The present invention is as described above, and the external lock knob 20
It can be locked using the same operation as a normal locking operation, and can be easily and easily locked from the outside.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG.
6 is an explanatory diagram of the operation, FIG. 7 is a sectional view of the second embodiment, and FIG. 8 is a perspective view of the groove portion of the rib.
FIG. 9 is an explanatory diagram of the operation of the groove of the sleeve and the pin. 10 is an internal lock knob, 20 is an external lock knob, 25 is a drive shaft, 26 is an electric clutch, 3
2 is a bolt.

Claims (1)

[Scope of Claims] 1. A hollow internal lock knob 10 including a grip portion 11 and a shaft lever, an external lock knob 20 including a grip portion 21 and a driving side shaft 25, and the driving side shaft 25. a driven shaft 27 rotatable around the driven shaft 25 and connected to the shaft rod; a bolt 32 that moves between the locked position and the unlocked position by rotation of the driven shaft 27; The driven side shaft 27 is provided between the side shaft 25 and the unlock signal generated by the operation from the outdoor side.
and a first position provided in the internal lock knob 10 to allow relative rotation between the shaft rod and the driving side shaft 25; a sleeve 50 movable over a second position that connects the shaft rod and the drive side shaft 25 in a relatively non-rotatable manner; and a sleeve 50 provided within the internal lock knob 10 to hold the sleeve 50 in the first position. a button 40 disposed within the internal lock knob 10 for moving the sleeve 50 to a second position;
and a stopper mechanism is provided between the shaft rod and the sleeve 50 to maintain the sleeve 50 in the second position, and to release the maintenance of the sleeve 50 when the driving shaft 25 rotates by a predetermined angle or more. An electric lock characterized by: