JP2001152713A - Electric lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact electric lock. SOLUTION: This electric lock 21 is constructed by arranging locking/ unlocking operation transmitting means 37, 71 interlocking with a hub rotationally coaxially, driving force transmitting means 66, 69 engaged with the locking/unlocking operation transmitting means 37, 71 with some play for electrically turning them, and mechanical locking devices 34, 72 arranged coaxially with the locking/unlocking operation transmitting means 37, 71 for turning them independent of the driving force transmitting means 66, 69 on a door outside face on the exterior side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock which can be retrofitted to an outer surface of a door in place of an existing cylinder lock provided on the door.

[0002]

2. Description of the Related Art In order to be able to electrically lock and unlock a cylinder lock already installed on a door or the like, the existing cylinder lock is held in an unlocked state and rotated from the outside (outdoor side). Connect external operation members so that they can be operated,
There is known an electric lock configured to restrict the rotation of the external operation member by a solenoid (Japanese Patent Laid-Open No. 8-18923).
See No. 3 Publication Date: Application date: December 31, 1994 Applicant: Miwa Lock Co., Ltd.).

There is also known an electric lock in which an electric drive device is mounted in place of a thumb turn on the indoor side, and a drive shaft is rotated by a locking / unlocking signal to operate a dead bolt (Japanese Patent No. 2575389). Reference: Invention name: Electric locking / unlocking device Filing date: May 15, 1987 Registration date: October 24, 1996 Patent holder: Matsushita Electric Works, Ltd.

[0004]

However, in the former electric lock, since the external operation member is manually operated, it cannot be automatically unlocked by inputting a signal. . In addition, since the cylinder lock cannot be directly operated, it cannot be unlocked when an electrical trouble occurs in the locked state. Furthermore, the electric lock has a configuration that protrudes considerably from the outer surface of the door.

On the other hand, in the latter electric lock, although the above-mentioned problem is solved, the operability at the time of manual operation is extremely high because the electric drive is connected to the drive shaft. It was a bad and inconvenient electric lock. Also,
Since the electric drive device is provided on the indoor side, a signal input and reception device must be separately provided on the outside of the room or the like, which hinders the mounting operation.

The present invention has been made in view of the above-mentioned problems, and can be retrofitted to an outer surface of a door, so that electric locking and unlocking and manual locking and unlocking can be performed independently of each other. An object of the present invention is to provide a compact electric lock that can be used.

[0007]

According to a first aspect of the present invention, there is provided an electric lock having a hub which is rotated by a thumb turn provided on an inner surface of a door on the indoor side. An electric lock that electrically drives a lock body that is unlocked when a deadbolt appears and unlocks due to rotation of a hub, and that is rotatably coaxially rotatable with the hub on an outer surface of a door serving as an outdoor side. The lock operation transmitting means, the driving force transmitting means which engages with the locking / unlocking operation transmitting means with play and electrically rotates, and the driving force transmitting means is coaxial with the locking / unlocking operation transmitting means. A mechanical lock device for independently rotating the locking / unlocking operation transmitting means is provided.

According to a second aspect of the present invention, there is provided an electric lock according to the first aspect, wherein the locking / unlocking operation transmitting means includes an output shaft joint disposed at a position of an existing cylinder lock. The mechanical lock device comprises a key joint connected to the transmission shaft, and a cylinder directly connected to the rotor with the rotor. It is characterized by being made of tablets.

According to a third aspect of the present invention, there is provided an electric lock according to the second aspect, wherein the output shaft joint comprises:
The cylinder lock, which is disposed at the position of the existing cylinder lock of the door and constitutes the mechanical lock device, is provided in an escutcheon, and the transmission shaft, the driving force transmission means, and the key joint are provided as a lock unit. It is characterized by being put together and fixed together with the escutcheon.

According to a fourth aspect of the present invention, there is provided the electric lock according to the second or third aspect, wherein the transmission shaft has a substantially cylindrical tubular portion, and an outer peripheral surface of the tubular portion. Is formed with an outer engaging portion that engages with the driving force transmitting means, and an inner engaging portion that engages with the key joint is formed on an inner peripheral surface of the cylindrical portion.

According to a fifth aspect of the present invention, in the electric lock according to any one of the first to fourth aspects, the driving force transmitting means includes a motor and a first cover which is rotated by driving the motor. It is characterized by comprising a drive unit and a second driven unit which is engaged with the locking / unlocking operation transmitting means and rotates integrally with the first driven unit by the urging force of a spring member.

According to a sixth aspect of the present invention, there is provided the electric lock according to any one of the first to fifth aspects, wherein the locking / unlocking operation transmitting means, the driving force transmitting means, and the position of the mechanical locking device are provided. And a position detecting means for detecting the position.

According to the first aspect of the present invention, the electric lock has a structure in which the locking / unlocking operation transmitting means, the driving force transmitting means, and the mechanical locking device are arranged on the outer surface of the door. The driving force transmission means and the mechanical locking device each independently drive the locking / unlocking operation transmission means. The locking and unlocking operation transmission means linked to the hub is
It is driven both electrically and mechanically.

According to the second aspect of the present invention, the locking / unlocking operation transmitting means is constituted by the output shaft joint and the transmission shaft directly connected thereto. Further, a mechanical lock device is constituted by the key joint and the cylinder lock directly connected to the rotor. The key joint is connected to the transmission shaft. During mechanical drive, the key joint acts on the transmission shaft.

According to the third aspect of the present invention, the output shaft joint is disposed on the door. An escutcheon fastened to the door is provided with a cylinder lock. Between the output shaft joint and the cylinder lock, a lock unit other than these is arranged. The electric lock has a compact configuration.

According to the present invention, the electric power is transmitted to the transmission shaft via the outer peripheral surface of the cylindrical portion of the transmission shaft. Further, mechanical driving force is transmitted through the inner peripheral surface of the cylindrical portion.

According to the fifth aspect of the present invention, the first driven portion and the second driven portion constitute driving force transmitting means. During electric drive, the second driven part acts on the transmission shaft.

According to the sixth aspect of the present invention, the electric lock has a configuration in which position detecting means is further arranged.
Since the driving force transmission means and the mechanical lock device independently drive the locking / unlocking operation transmission means, operability is improved by detecting the positions of the locking / unlocking operation transmission means, the driving force transmission means, and the mechanical locking device. I do.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a door showing an embodiment of the electric lock of the present invention. FIG. 2 is a cross-sectional view of the door.

1 or 2, a door 1 is provided with a box lock 2 of a known configuration. An indoor handle 3 and an outdoor handle 4 are provided on both sides of the door 1 from the box lock 2. The handle 3 projects through a round seat 6 provided on the inner surface 5 of the door, and is approximately 90 ° bent at an intermediate position.
It is formed in a character shape. Further, the handle 4 is similarly formed.

A latch bolt 7 is provided between the handle 3 and the handle 4 of the box lock 2. Latch bolt 7
Above this, a dead bolt 8 for locking is provided so as to be freely retractable. At one end of a drive shaft (not shown) for driving the dead bolt 8, a thumb turn 9 for manually locking and unlocking is provided. A round cap 11 that covers the thumb turn seat 10 is provided between the thumb turn 9 and the door inner surface 5.

On the other hand, an electric lock 21 according to the present invention is provided on the door outer surface 12. The electric lock 21 is a lock device that is retrofitted to the door outer surface 12 instead of an existing cylinder lock (not shown) provided at the other end of the drive shaft (not shown).

Hereinafter, the electric lock 21 will be described in detail in the order of configuration and operation.

The electric lock 21 includes an escutcheon 22 and a back plate 2 for closing the back surface of the escutcheon 22.
3 is provided. At the upper part of the escutcheon 22, there is provided a covering cover 25 which can be freely opened and closed by a hinge part 24 near the upper end. A cylinder lock cover 26 is provided below the cover 25. One end of the cylinder lock cover 26 is rotatably attached to the hinge 27. On the lower side of the handle 4, a battery housing 28
Is provided. Reference numeral 29 indicates a lid that can be attached to and detached from the battery storage unit 28.

In the description of the structure, the vertical direction is
It is assumed that it coincides with the longitudinal direction of the escutcheon 22 in FIG.

The back plate 23 is provided with a plurality of mounting portions 30 inserted into the door 1. A bolt 31 is screwed into the mounting portion 30 via the thumb-turn seat 10. The electric lock 21 is a bolt 31
Is fixed.

A rubber cushion material 32 of substantially the same size as the back plate 23 is provided between the back plate 23 and the door outer surface 12.

When the cover 25 of the escutcheon 22 is opened, the input setting section 33 for inputting a password by operating a plurality of switches is exposed, and when the cylinder lock cover 26 is lowered, the keyhole 77 ( (See FIG. 8 and described later).
On the back side of the input setting unit 33, a substrate 35 having a control unit (not shown) is provided along the back plate 23. Although not particularly shown, the input setting unit 33 and the board 35 are electrically connected.

Between the cylinder lock 34 and the other end of the drive shaft (not shown), a lock unit 36 and an output shaft joint 3 are provided.
7 are provided. Cylinder lock 3 in lock unit 36
4 and one end of the output shaft joint 37 are attached. The other end of the output shaft joint 37 is attached so as to be directly connected to the other end of the drive shaft (not shown). Cylinder lock 34 and output shaft joint 3
7, a drive shaft (not shown) and the thumb turn 9 are arranged coaxially.

The lock unit 36 has a bolt 41 inserted therein.
Is attached to the escutcheon 22 in the vicinity of the cylinder lock 34. The lock unit 36 is, as shown in any of FIGS.
The lower case 43 forms a rectangular parallelepiped.

A circular hole 44 is formed in the lower case 43. A cylindrical portion 74 (see FIG. 4) to be described later is formed through the hole 44.
Has a slightly protruding tip. Upper case 42
Has a hole 45 at the same position as the hole 44. A U-shaped slit 47 is formed in one side wall 46 along the longitudinal direction. From the slit 47, the substrate 35
A wire harness 48 connected to (see FIG. 1) is led out.

The upper case 42 and the lower case 43 are bolted from the lower case 43 side and screwed into the upper case 42.
Has been fixed by. The upper case 42 and the lower case 43 have two insertion holes 50 for the bolts 41 (see FIG. 1).

4 or 5, in the lock unit 36, a motor 56 is disposed above the escutcheon 22 (see FIG. 1). A gear 57 is provided on the drive shaft of the motor 56, and the gear 57 meshes with a first reduction gear 58 disposed below the motor 56. The first reduction gear 58 meshes with a second reduction gear 59 disposed further below.

The first reduction gear 58 is inserted through a shaft 60 projecting into the lower case 43. The shaft 60 is inserted into a bearing 61 projecting into the upper case 42. Similarly to the first reduction gear 58, the second reduction gear 59 is
3 is inserted through a shaft 62 projecting into the shaft 3. The axis 62 is
It is inserted into a bearing 63 projecting into the upper case 42. The second reduction gear 59 meshes with a gear 66 disposed coaxially with the cylinder lock 34 and the like.

A first printed wiring board 67 is provided on the upper case 42 side of the gear 66. A tension spring 68 for urging the gear 66 toward the lower case 43 is provided between the first printed wiring board 67 and the gear 66. The gear 66 includes a tension spring 68
As a result, the first clutch plate 69 disposed on the lower case 43 side is rotated by the contact pressure.

On the lower case 43 side of the first clutch plate 69, a cylindrical portion 70 at one end is provided with a first printed wiring board 67,
The second clutch plate 71 inserted through the tension spring 68, the gear 66, and the first clutch plate 69
4 and so on.

A shaft 73 of a key joint 72 disposed between the upper case 42 and the first printed wiring board 67 is inserted into the inside of the cylindrical portion 70. The key joint 72 is directly connected to the rotor 38.

At the other end of the second clutch plate 71, a cylindrical portion 7 is provided.
4 is provided, and the second printed wiring board 75 is inserted through the cylindrical portion 74. Further, the output shaft joint 37 is directly connected via the inside of the cylindrical portion 74.

The output shaft joint 37 and the second clutch plate 71 correspond to the locking / unlocking operation transmitting means described in the claims. The motor 56 and the gear 5
7. The first reduction gear 58, the second reduction gear 59, the gear 66, and the first clutch plate 69 correspond to the driving force transmitting means described in the claims. Further, the cylinder lock 34 and the key joint 72 correspond to the mechanical lock device described in the claims. In addition, the drive shaft (not shown) is connected to the hub described in the claims.
The second clutch plate 71 corresponds to the transmission shaft described in the claims, the gear 66 corresponds to the first driven portion described in the claims, and the tension spring 68 corresponds to the spring member described in the claims. One clutch plate 69 corresponds to a second driven portion described in the claims. Also,
First printed wiring board 67, second printed wiring board 7
5, a control unit (not shown) and brushes 83, 10 described later
It is assumed that 0, 107, etc. constitute the position detecting means described in the claims.

Referring to FIG. 6 or FIG.
4 has the same configuration as that of the known configuration, so a detailed description is omitted. However, a key hole 77 is opened on the front surface so that a key can be inserted and locked and unlocked. It has become. In addition, the rotor 3 is operated by locking and unlocking operations.
8 rotates in the locking or unlocking direction. The rotor 38 has cutout surfaces 78, 78 parallel to each other.

The key joint 72 is connected to the shaft 73
And a disk-shaped flange 8 provided around the outer periphery of the shaft portion 73
0. The shaft portion 73 has a connection portion 81 that is recessed inward from the end face on the cylinder lock 34 side. Further, a protruding portion 82 is formed on the opposite side of the end face.

The connecting portion 81 is formed according to the outer shape of the rotor 38. The projecting portion 82 is formed such that the cross-sectional shape in the direction along the surface of the flange 80 is substantially a ribbon shape. That is, it is formed in a shape in which the center is a columnar shape, and a pair of columns having a fan-shaped cross section are coupled to the outer peripheral surface of the columnar shape. A brush 83 is provided on the flange 80 to contact the first printed wiring board 67.

The first printed wiring board 67 has a through hole 85 having a diameter slightly larger than the diameter of the cylindrical portion 70 (see FIG. 5) of the second clutch plate 71 (see FIG. 5). . A ring-shaped conductive pattern 86 and a C-shaped conductive pattern 87, which are in contact with and slide with a brush 83, on the surface of the first printed wiring board 67 on the side of the key joint 72 and the periphery of the hole 85 in this order from the inside. Is provided. The two ends of the conductive pattern 87 detect the state of the cylinder lock 34.

A connector 88 is provided on the surface of the first printed wiring board 67 on the gear 66 side. The first printed wiring board 67 is provided with four reliefs 89 for the bolts 41 (see FIG. 1) and 49 (see FIG. 1) in addition to the above. The description of the connection of a wire harness and the like (not shown) is omitted.

The tension spring 68 is a compression coil spring having a diameter slightly larger than the diameter of the hole 85 of the first printed wiring board 67, one end of which is in contact with the first printed wiring board 67 and the other end is a gear 66. To be locked.

The urging force of the tension spring 68 against the gear 66 is larger than the contact pressure between the gear 66 and the first clutch plate 69 obtained by the urging force, and is higher than the cylinder lock 34.
Are set so that the driving force when rotating the key joint 72 is larger.

The gear 66 is formed in a substantially disk shape, and has a ring having an inner diameter larger than the diameter of the cylindrical portion 70 (see FIG. 5) of the second clutch plate 71 (see FIG. 5) at the center. The part 91 is formed so as to protrude. The ring portion 91 is formed on the first printed wiring board 67 side, and a small hole 92 for locking the other end of the tension spring 68 is formed inside the ring portion 91.

On the surface opposite to the surface from which the ring portion 91 protrudes, three round, low-height projections 93 are formed at an equal pitch. Although not shown, the protrusion 93 is provided with a taper.

On the outer periphery of the gear 66, a second reduction gear 59 is provided.
(See FIG. 5).
The engagement portion 94 is formed so as to protrude toward the opposite surface having the protrusion 93.

In FIG. 7 or FIG. 9, the first clutch plate 69 is formed in a disk shape so as to be accommodated inside the meshing portion 94 of the gear 66. A through hole 97 having a diameter slightly larger than the diameter of the cylindrical portion 70 of the second clutch plate 71 is formed at the center thereof.

The hole 97 has a protrusion 9 having a circular arc at the tip.
8, 98 are formed at opposing positions. On the surface of the first clutch plate 69 on the gear 66 side, three substantially elliptical recesses 99 into which three projections 93 engage and disengage are formed. On the opposite surface, the second printed wiring board 75 is provided.
Is provided avoiding the second clutch plate 71.

The second clutch plate 71 is connected to the cylinder 70
And the above-mentioned cylindrical portion 74 which is continuous therewith, and a fan-shaped flange 103 connected therebetween. Cylindrical part 70
1 has a pair of outer engaging portions 104, 104 (FIG. 1).
0 and FIG. 14). Outer engaging portion 10
4 and 104 are projections 98 and 98 of the first clutch plate 69.
And is formed so as to protrude from the outer peripheral surface of the cylindrical portion 70 and the flange 103. The protruding tip side is formed to be slightly wider.

A pair of opposed inner engaging portions 105, 105 (see FIGS. 10 and 14) are formed on the inner peripheral surface of the cylindrical portion 70. The inner engaging portions 105, 105 are formed in a substantially triangular shape in a plan view, and are formed so that the interval between the tips is slightly larger than the diameter of the central portion of the protruding portion 82 (see FIG. 6). I have. Also, the inner engaging portion 10
The slopes of the slopes 5 and 105 are formed so as to match the slope of the slope of the pillar having a fan-shaped cross section of the protruding portion 82 (see FIG. 6). The inner engaging portions 105, 105 are formed at positions inside the outer engaging portions 104, 104, and are formed such that the width of the bottom portion substantially matches the tip width of the outer engaging portions 104, 104. ing.

Inside the cylindrical portion 74, a connecting portion 106 to which the one end of the output shaft joint 37 is directly connected is formed. The connecting portion 106 is formed so as to be recessed in accordance with the outer shape of the one end of the output shaft joint 37.

The outer peripheral surface of the cylindrical portion 74 is formed with a step. A second printed wiring board 75 is inserted through the large diameter side. The small diameter side protrudes from the hole 44 (see FIG. 3). A brush 107 that contacts and slides on the second printed wiring board 75 is provided on the surface of the flange 103 on the second printed wiring board 75 side.

The second printed wiring board 75 is formed with a through hole 110 having a diameter slightly larger than the diameter of the cylindrical portion 74 on the large diameter side. Second printed wiring board 75
On the flange 103 side and the periphery of the hole 110,
A ring-shaped conductive pattern 111 with which the brush 100 and the brush 107 contact and slide is provided. The brush 100 and the brush 1 are located outside the conductive pattern 111.
07 are provided with three contacts 112 to 114 that contact and slide. By having the contacts 112 to 114,
The state of locking and unlocking when the motor 56 is driven can be detected.

The second printed wiring board 75 is provided with a plurality of pin-shaped terminals 115 connected to the connector 88 (see FIG. 6) of the first printed wiring board 67 (see FIG. 6).

The second printed wiring board 75 has four reliefs 116 for the bolts 41 and 49 in addition to the above.
Etc. are formed. Description of circuits not shown other than the conductive pattern 111 and the like is omitted.

The output shaft joint 37 includes a first connection protrusion 120 serving as the one end, a second connection protrusion 121 serving as the other end, and the flange 12 provided therebetween.
3 is provided. The first connection protrusion 120 is formed so as to substantially match the shape of the rotor 38, and the second connection protrusion 121 is formed with a pair of arc-shaped recesses 124. The diameter of the flange 123 is the same as the diameter of the existing cylinder lock (not shown).

Next, the operation of the electric lock 21 will be described with reference to FIGS.

The following description is based on the vertical direction when the corresponding drawing is viewed normally. The same applies to clockwise and counterclockwise rotation. In addition, when referring to FIG. 10 to FIG. 14 and there is no reference numeral for explanation, FIG. 1 or FIG. 5 to FIG. 9 shall be referred to.

First, the operation when the motor is operated will be described.

In FIG. 10A, in the unlocked state (waiting for locking), the protruding portion 98 of the first clutch plate 69 is positioned vertically. The projection 93 of the gear 66 is located at the center of the recess 99 of the first clutch plate 69. The biasing force of the tension spring 68 (see FIG. 5) acts on the gear 66, and the gear 66 and the first clutch plate 69 are in contact.

The cylindrical portion 70 of the second clutch plate 71 inserted into the hole 97 of the first clutch plate 69
One of the projections 4 and 104 is located on the right side of the upper projection 98, and the other is located on the left side of the lower projection 98. The protruding portion 82 of the key joint 72 inserted into the cylindrical portion 70 is positioned so that the pillar portion having a fan-shaped cross section is in the vertical direction. The inner engaging portions 105 of the cylindrical portion 70 are
One is in contact with the right side of the upper column portion, and the other is in contact with the left side of the lower column portion.

The upper outer engaging portion 104 and the lower projecting portion 9
8, the second clutch plate 71 rotates 90 ° clockwise,
There is play of engagement. On the other hand, the same play of engagement is formed between the lower outer engagement portion 104 and the upper protrusion 98. Also, between the upper inner engaging portion 105 and the column portion of the lower protruding portion 82,
The second clutch plate 71 is 90 ° clockwise so that there is play for engagement. On the other hand, the lower inner engaging portion 1
The same play of engagement is also formed between the outer projection 05 and the column portion of the upper protrusion 82.

The password is input to the input setting section 33 and the door 1
When attempting to lock the lock, the control unit (not shown) generates an operation signal for the lock operation to the motor 56.
The motor 56 is operated by the signal, and the driving force is transmitted to the gear 66 via the first reduction gear 58 and the second reduction gear 59. The motor 56 operates only by rotating the gear 66 by 90 °.

In FIG. 10B, the gear 66 starts rotating clockwise with the first clutch plate 69 (in the middle of locking). Outer engagement portions 104, 10
4 is in contact, the second clutch plate 71 also rotates clockwise.

In FIG. 10C, when the gear 66, the first clutch plate 69, and the second clutch plate 71 are rotated clockwise by 90 °, the locked state is established. That is, the second clutch plate 71
Is rotated clockwise by 90 °, so that the output shaft joint 37 directly connected thereto is rotated by 90 °. And
The drive shaft (not shown) rotates in the locking direction, and the dead bolt 8 projects.

In the locked state, the control unit (not shown)
An operation signal is generated for the motor 56 to return the first clutch plate 69 to the neutral point.

In FIG. 10D, the motor 56 is operated by the signal, and the driving force is transmitted to the gear 66 via the first reduction gear 58 and the second reduction gear 59. Motor 56
Operates by an amount equivalent to rotating the gear 66 by -90 ° from the locked position. The gear 66 rotates counterclockwise with the first clutch plate 69.

In FIG. 10 (e), when the gear 66 and the first clutch plate 69 return to the neutral point, that is, the position at the time of the original unlocking state, the locking of the door 1 is completely completed, and the unlocking wait state is established. become.

The operation when the thumb turn is activated will be described.

FIG. 11A shows an unlocked state (waiting for locking), which is the same as the state shown in FIG. 10A (the description is omitted).

In FIG. 11 (b), the thumb turn 9 is pinched to perform the locking operation. When the thumb turn 9 rotates in the locking direction, the drive shaft and the output shaft joint 3 (not shown)
7 also rotates by the same amount of rotation. The second clutch plate 71 is
Since it is directly connected to the output shaft joint 37, only the second clutch plate 71 rotates clockwise by 90 ° as shown in the drawing (locking state).

In FIG. 11C, when the thumb turn 9, the drive shaft (not shown), the output shaft joint 37, and the second clutch plate 71 are rotated by 90 °, the dead bolt 8 is projected and locked. The locking of the door 1 is completely completed, and the system enters a state of waiting for unlocking.

When the thumb turn 9 is actuated, the gear 66 and the first clutch plate 69 are unlocked (or as shown in FIG. 10).
In a neutral position as shown in FIG. The gear 66 and the first clutch plate 69 driven by the motor 56 do not act because of the play.

The operation when the cylinder lock is operated by the key will be described.

FIG. 12A shows an unlocked state (waiting for locking), which is the same as the states shown in FIGS. 10A and 11A (the description is omitted).

In FIG. 12B, when the cylinder lock 34 is operated by a key to perform locking, the rotor 38 rotates in the locking direction. Accordingly, the key joint 72 directly connected to the rotor 38 also rotates. The column portions of the protrusion 82 are provided with the inner engaging portions 105, 10
Since 5 is in contact, the second clutch plate 71 also rotates (clockwise in the drawing, in the middle of locking).

In FIG. 12C, the key joint 7
When the second clutch plate 71 rotates clockwise by 90 °, the output shaft joint 3 directly connected to the second clutch plate 71
7 rotates the drive shaft (not shown) in the locking direction by the amount of rotation. The dead bolt 8 protrudes and becomes locked.

In FIG. 12D, when the key is rotated to the original position in order to remove the key from the cylinder lock 34, only the key joint 72 is moved from the lock completion position to-
Turn 90 ° (turn counterclockwise). The locking of the door 1 is completely completed, and the system enters a state of waiting for unlocking.

When the cylinder lock 34 is actuated by a key, the gear 66 and the first clutch plate 69 remain in the unlocked state (or in a state of being located at the neutral point as shown in FIG. 10) and do not rotate. . The gear 66 and the first clutch plate 69 driven by the motor 56 do not act because of the play.

As can be seen from FIGS. 10 to 12, the direction between the outer engaging portions 104 of the cylindrical portion 70 has a 45 ° inclination with respect to the horizontal axis as shown in FIG. If so, it is in the locked state. On the other hand, if it has an inclination of 135 °, it means that it is in the unlocked state.

The operation at the time of unlocking from the locked state is the reverse of the operation described above, and the description thereof is omitted here.

The operation when the cylinder lock is operated by the key in an emergency will be described.

In FIG. 13A, when the gear 66 and the first clutch plate 69 do not return to the neutral position due to some cause (for example, electric trouble) in the locked state, the cylinder lock 34 is operated by the key. Can be operated to unlock. The positions of the constituent members in FIG.
Since the state is the same as the state of 0 (c), the description is omitted.

In FIG. 13B, when the cylinder lock 34 is unlocked by operating the key with the key, the rotor 38 rotates in the unlocking direction. Accordingly, the key joint 72 directly connected to the rotor 38 rotates. The first clutch plate 69 and the second clutch plate 71 also rotate (counterclockwise in the figure, in the middle of locking).

That is, the inner engaging portions 105 of the cylindrical portion 70 are provided on the pillar portion of the projecting portion 82 in the rotation direction.
Further, since the protrusions 98, 98 of the first clutch plate 69 are in contact with the outer engagement portions 104, 104, the first clutch plate 69 and the second clutch plate 71 rotate.

Since the driving force generated by operating the key is greater than the contact pressure applied to the first clutch plate 69, the first clutch plate 69 is easily rotated.

In FIG. 13C, the key joint 7
2. When the second clutch plate 71 and the first clutch plate 69 rotate counterclockwise by 90 ° (-90 ° rotation), the output shaft joint 37 directly connected to the second clutch plate 71 rotates around the drive shaft (not shown). Rotate in the unlocking direction by the amount moved. The dead bolt 8 protrudes and becomes locked.

In FIG. 13 (d), when the key is rotated to the original position in order to remove the key from the cylinder lock 34, only the key joint 72 is moved from the unlocked position by 9 degrees.
Turn 0 ° (turn right). The unlocking of the door 1 in an emergency is completely completed.

As described above with reference to FIGS. 1 to 14, the electric lock 21 can be retrofitted to the door outer surface 12, and can be electrically operated and unlocked by manual operation. It is a compact electric lock that can be operated independently.

In addition, it goes without saying that the present invention can be variously modified and implemented without departing from the gist of the present invention.

Incidentally, the electric lock 21 is not limited to retrofitting,
It is naturally possible to attach to the door 1 from the beginning. Also, as shown in FIG. 15, an electric lock 133 (basically the same as the electric lock 21 described above) is used instead of an existing cylinder lock for an imposition lock 132 protruding toward the indoor side of the door 131. Naturally, the explanation will be omitted).

[0095]

As described above, according to the present invention,
Since the electric lock that rotates the hub via the locking / unlocking operation transmitting means that can be driven both electrically and mechanically is arranged outside the door, a compact electric lock can be provided. Also,
This electric lock can be retrofitted on the outer surface of the door in place of the existing cylinder lock.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of an electric lock according to the present invention.

FIG. 2 is a cross section of a door.

3A and 3B are drawings showing the lock unit, wherein FIG. 3A is a plan view, FIG. 3B is a front view, FIG. 3C is a bottom view, FIG. 3D is a right side view, and FIG.

FIG. 4 is a state diagram showing the configuration of the lock unit when the upper case is cut away.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is an exploded perspective view showing a configuration of a lock unit on a cylinder lock side.

FIG. 7 is an exploded perspective view showing the configuration of the lock unit on the output shaft joint side.

8 is an exploded perspective view showing the configuration of the lock unit on the cylinder lock side (when viewed from the opposite direction to FIG. 6).

9 is an exploded perspective view showing the configuration of the lock unit on the output shaft joint side (when viewed from the opposite direction to FIG. 7).

FIGS. 10A and 10B are explanatory diagrams of an operation when a motor is operated, where FIG. 10A is an unlocked state, FIG. 10B is a locked state, FIG. 10C is a locked state, and FIG. Status,
(E) is a locked state (unlocking waiting state).

FIGS. 11A and 11B are explanatory diagrams illustrating an operation when a thumb turn is operated. FIG. 11A illustrates an unlocked state, FIG. 11B illustrates a locked state, and FIG. 11C illustrates a locked state.

12A and 12B are explanatory diagrams of an operation when a cylinder lock is operated by a key, where FIG. 12A is an unlocked state, FIG. 12B is a locked state, FIG. 12C is a locked state, and FIG. 12D is a locked state. (Without key).

13A and 13B are explanatory diagrams illustrating an operation when a cylinder lock is operated by a key in an emergency, where FIG. 13A illustrates a locked state, FIG. 13B illustrates an unlocking state during key operation, and FIG. The locked state, (d) is an unlocked state (key-off state).

FIGS. 14A and 14B show positions of a locked state and an unlocked state of the second clutch plate as an example, wherein FIG. 14A is a cross-sectional view of the locked state and FIG.

FIG. 15 is an explanatory diagram in a case where an electric lock is attached to an outer surface of a door having an imposition lock.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Door 2 Box lock (lock main body) 9 Thumb turn 21 Electric lock 22 Escution 23 Back plate 24 Hinge part 25 Covering cover 26 Cylinder lock cover 27 Hinge part 28 Battery storage part 29 Lid part 30 Mounting part 31 Bolt 32 Cushion material 33 Input setting Part 34 Cylinder lock (mechanical lock device) 35 Board 36 Lock unit 37 Output shaft joint (locking / unlocking operation transmitting means) 38 Rotor 41 Bolt 42 Upper case 43 Lower case 44, 45 Hole 46 One side wall 47 Slit 48 Wire harness 49 Bolt Reference Signs List 50 insertion hole 56 motor (driving force transmitting means) 57 gear (driving force transmitting means) 58 first reduction gear (driving force transmitting means) 59 second reduction gear (driving force transmitting means) 60, 62 shaft 61, 63 bearing 66 Gear (driving force transmitting means, first driven portion) 67 One printed wiring board (position detecting means) 68 Tension spring (spring member) 69 First clutch plate (driving force transmitting means, second driven part) 70 Tubular part 71 Second clutch plate (locking / unlocking operation transmitting means, transmission shaft) ) 72 Key joint (mechanical lock device) 73 Shaft 74 Cylindrical 75 Second printed wiring board (Position detecting means) 77 Keyhole 78 Cutout surface 80 Flange 81 Connection 82 Protrusion 83 Brush (Position detecting means) 85 Hole 86, 87 Conductive pattern 88 Connector 91 Ring part 92 Small hole 93 Projection 94 Engagement part 97 Hole 98 Projection 99 Depression 100 Brush (position detection means) 103 Flange 104 Outer engagement part 105 Inner engagement part 106 Connection part 107 Brush (Position detecting means) 110 holes 111 conductive patterns 112 to 114 contacts 115 terminals 1 0 first connection protrusion 121 recess the second connection protrusions 123 flange 124

Claims (6)

[Claims] 1. An electric lock which has a hub which is turned by a thumb turn provided on an inner surface of a door on the indoor side, and which electrically drives a lock body which locks by unlocking and unlocking a deadbolt by the rotation of the hub. A locking / unlocking operation transmitting means which is coaxially rotatable with the hub and is engaged with the locking / unlocking operation transmitting means with play on an outer surface of the door serving as an outdoor side, and is electrically rotated. And a mechanical lock device for rotating the locking / unlocking operation transmitting means independently of the driving force transmitting means, coaxially with the locking / unlocking operation transmitting means. Electric lock. 2. The electric lock according to claim 1, wherein the locking / unlocking operation transmitting means is connected to an output shaft joint disposed at a position of an existing cylinder lock, and is directly connected to the output shaft joint, so that the driving force is transmitted. A transmission shaft rotated by a transmission means, wherein the mechanical lock device comprises a key joint connected to the transmission shaft, and a cylinder lock directly connected to a rotor with the key joint. Tablets. 3. The electric lock according to claim 2, wherein the output shaft joint is disposed at a position of the existing cylinder lock on a door, and the cylinder lock constituting the mechanical lock device is connected to an escutcheon. An electric lock, wherein the transmission shaft, the driving force transmission means, and the key joint are provided as a lock unit and are fixed together with the escutcheon. 4. The electric lock according to claim 2, wherein the transmission shaft has a substantially cylindrical tubular portion, and an outer peripheral surface of the tubular portion is engaged with the driving force transmitting means. An electric lock, wherein an outer engaging portion that engages with the key joint is formed on an inner peripheral surface of the cylindrical portion. 5. The electric lock according to claim 1, wherein the driving force transmitting unit includes a motor, a first driven unit that is rotated by driving the motor, and the locking / unlocking operation transmitting unit. And a second driven part that rotates integrally with the first driven part by a biasing force of a spring member. 6. The electric lock according to claim 1, further comprising a position detecting means for detecting the positions of the locking / unlocking operation transmitting means, the driving force transmitting means, and the mechanical lock device. An electric lock, characterized in that: