JP7211875B2 - Lock/unlock control device - Google Patents

Description

The present invention relates to a locking/unlocking control device.

For example, a door such as an entrance has a thumb-turn on the surface of the door on the interior side in order to enable unlocking and locking of the door. In recent years, a lock/unlock control device (smart lock) has been developed that unlocks and locks a lock by driving a thumb-turn with an electronic device such as a smartphone. For example, the following technology has been disclosed as a locking/unlocking control device.

For example, as an example, an electronic lock that locks or unlocks a door by remote control includes a first rotating body that locks or unlocks the door by rotating a thumb-turn, and is engaged with the first rotating body, It has a drive section for rotating a first rotating member of the first rotating body, and a grasping section, and is engaged with the first rotating body to rotate a second rotating member of the first rotating body. A second rotating member is disclosed in which the second rotating member is relatively rotatable by a predetermined angle with respect to the first rotating member (see, for example, Patent Document 1).

Further, as an example, a motor gear that rotates by receiving a driving force from a motor, a first gear that transmits a driving force that rotates a thumb-turn to the thumb-turn, and is arranged between the motor gear and the first gear, a clutch gear for transmitting a driving force generated by a motor to the first gear, wherein the clutch gear switches between blocking and formation of a driving force transmission path between the motor gear and the first gear; A key driving device has been disclosed (see, for example, Patent Document 2).

Also by way of example, a gear assembly including a planetary gearset and a clutch, wherein the planetary gearset includes a sun gear, at least one planetary gear meshing with the sun gear, and a carrier supporting the at least one planetary gear. and an outer ring gear meshing with said at least one planetary gear, said clutch engaging and disengaging said planetary gearset such that said planetary gearset switches between a first mode and a second mode. A gear assembly that is operable is disclosed in U.S. Pat.

Further, as an example, a lock opening/closing device for locking or unlocking a door by rotating a thumb-turn by remote control, which includes a power transmission mechanism capable of transmitting and disconnecting power and enabling manual unlocking and locking. A lock opening and closing device has been disclosed (for example, Patent Document 4).

JP 2016-148208 A JP 2016-223277 A JP 2018-028259 A Patent No. 6309145

Since the locking/unlocking control device has a structure that rotates while covering the thumb-turn knob, the thumb-turn knob cannot be directly pinched with fingers after the locking/unlocking control device is installed. Therefore, it becomes impossible to lock or unlock manually. Therefore, if the lock/unlock control device is battery-powered, it cannot be locked or unlocked when the battery runs out, and the lock cannot be unlocked manually in an emergency (e.g., fire or earthquake). can't

Therefore, the lock/unlock control device may have a second rotating member that rotates the first rotating member that directly rotates the knob of the thumb-turn and has a knob that is exposed to the outside so that it can be manually rotated. many.

However, since the first rotating member is normally rotated by driving the motor, when the second rotating member is rotated during manual operation, the first rotating member rotates and rotates the knob of the thumb-turn. Rotation is transmitted to the motor, and a load is applied to the motor. Therefore, in the electronic lock described in Patent Document 1, projections are formed on one of the mutually facing main surfaces of the first rotating body and the second rotating body, and the other of the mutually facing main surfaces has a By forming a hole into which the protrusion is inserted, the second rotating member is configured to be relatively rotatable by a predetermined angle with respect to the first rotating member.

Further, in Patent Documents 2 to 4, by adopting a clutch mechanism, by switching between blocking and formation of a driving force transmission path between a motor and a rotating member that rotates when manually rotated, a manual At times, the configuration allows the user to turn the knob because the motor load is not on the knob.

However, in these prior arts, there is a risk that the number of parts will increase and the yield will decrease, because the structure that does not apply a load to the motor when it is manually rotated and the shape of the parts used in that structure are complicated. be.

Accordingly, the present invention provides a locking/unlocking control device that more easily realizes a configuration that does not apply a load to a motor when opening and closing manually.

A locking/unlocking control device according to an embodiment of the present invention includes a housing member having a space for housing a thumb-turn which locks or unlocks a door and has a space for housing the thumb-turn, and a knob portion, wherein the housing member and the rotation shaft are the same. a rotator for rotating the housing member by pinching and rotating the knob, a first gear provided along the edge of the opening of the housing member, and the first gear; A second gear that engages and rotates according to the rotation of the first gear, and a third gear that shares a rotation axis with the second gear and is rotatable by a predetermined angle relative to the second gear. , and a drive unit for rotating the third gear.

Among the second gear and the third gear, one gear is formed with an arc-shaped groove in the rotational direction of the one gear, and the other gear is formed with a projection inserted into the groove. , the second gear is rotatable by the predetermined angle relative to the third gear within a range in which the projection moves relatively along the arc-shaped groove along the rotation direction of the knob of the thumb-turn. characterized by being

The predetermined angle is n ₂ = (Z ₁ /Z ₂ )n ₁ (Z ₁ : number of teeth of first gear, n ₁ : number of rotations of first gear, Z ₂ : number of teeth of second gear, n ₂ : number of rotations of the second gear) is equal to or larger than the rotation angle (=n ₂ /360°).

The locking/unlocking control device is further provided with a coupling portion provided inside the accommodating member for absorbing a deviation of an axis between a rotation axis of the knob of the thumb-turn and a rotation axis of the rotating body. and

The coupling portion includes a first coupling member provided on the ceiling surface inside the accommodating member so as to be movable in a predetermined direction, and the thumb-turn fixed to and accommodated in the first coupling portion. and a second coupling member formed with a groove longer than the length of the rotating surface of the knob of the thumb-turn when the knob is inserted.

According to the locking/unlocking control device of the present invention, it is possible to more easily realize a configuration in which no load is applied to the motor when the lock is manually opened and closed.

1 is a front perspective view of a locking/unlocking control device in this embodiment; FIG. It is a rear perspective view of the locking/unlocking control device in this embodiment. It is a sectional view at the time of installing the locking/unlocking control device in this embodiment in a door. FIG. 2 is a perspective view showing a state in which a housing is removed from the locking/unlocking control device of FIG. 1; FIG. 5 is a front view showing a state in which a housing is removed from the locking/unlocking control device of FIG. 1, and shows a state in which a rotating body, a potentiometer, and a motor are removed from FIG. 4; 3 is a perspective view of a housing member 11 that is housed in a knob 103 of a thumb-turn 104 according to this embodiment; FIG. It is a figure which shows the accommodating member in this embodiment, a rotating body, and the member regarding these. FIG. 8 is a perspective view of the intermediate coupling portion of FIG. 7; FIG. 10 is a view showing a state in which the first coupling member is installed on the ceiling portion of the housing member, viewed from the direction of the opening of the housing member;

FIG. 1 is a front perspective view of the locking/unlocking control device according to this embodiment. FIG. 2 is a rear perspective view of the locking/unlocking control device according to this embodiment. FIG. 3 is a cross-sectional view when the locking/unlocking control device according to the present embodiment is installed on a door.

As shown in FIG. 3, the locking/unlocking control device 1 is attached so as to cover the thumb-turn 104 (the thumb-turn base 102 and the knob 103) of the door 101, and by rotating the knob 103 of the thumb-turn 104, the door 101 can be opened. lock or unlock. The lock/unlock control device 1 has wireless communication functions such as Bluetooth (registered trademark) and Wi-Fi, and can lock or unlock the door 101 by remote control. The configuration of the locking/unlocking control device 1 will be described below with reference to FIGS. 1 to 9. FIG.

As shown in FIG. 1, when viewed obliquely from the front, the exterior of the lock/unlock control device 1 is composed of a housing 1 and a rotating body 3 having a knob 4. As shown in FIG. When viewed from the front, the housing 1 has a rectangular shape whose short sides at both ends are semicircular. The rotating body 3 is a flat disk, and has a knob 4 in the diameter direction. The knob 4 can rotate the rotating body 3 from the outside of the lock/unlock control device 1 .

As shown in FIG. 2, when viewed obliquely from the rear, the rear surface of the locking/unlocking control device 1 is generally composed of two rear surface members (back surface member 5 and rear surface member 6). The back member 5 is the bottom of a power supply box that accommodates a power source such as a battery, and has an approximately crescent shape when viewed from the back direction. The back member 5 can be attached to and detached from the housing 2 from the back side.
When viewed from the front, the back member 6 has a rectangular shape with short sides at both ends of a semicircular shape. A space 7a for accommodating the thumb-turn 104 is formed in the rear member 6, and an opening 7 corresponding to the entrance of the space is formed.

As shown in FIG. 3, a thumb-turn 104 for locking and unlocking the door 101 is usually provided around the knob 100 provided on the indoor side of the door 101 . A thumb-turn 104 is composed of a thumb-turn base 102 and a knob 103 . The thumb-turn pedestal 102 fixes the thumb-turn to the door 101 so as to be rotatable. For example, when the knob 103 of the thumb-turn 104 is rotated counterclockwise, the door 101 is locked, and when it is rotated clockwise in the locked state, it is unlocked. The door 101 may be locked by rotating the knob 103 of the thumb-turn 104 clockwise, and unlocked by rotating it counterclockwise in the locked state.

The locking/unlocking control device 1 is attached so as to cover the thumb-turn 104 of the door 101 . One surface of a member having adhesive tape on both sides is attached to the back surface (back surface members 5 and 6) of the lock/unlock control device 1, and the other surface is attached to the surface of the door 101, whereby the lock/unlock control device 1 is constructed. is attached to the door 101. Note that the back surface (back surface members 5 and 6) of the locking/unlocking control device 1 may be fixed to the surface of the door 101 using magnets.

As described above, the lock/unlock control device 1 incorporates the power supply box 9 having the back surface member 5 as the bottom surface. Further, the lock/unlock control device 1 accommodates therein an electric board portion 8 that realizes wireless communication functions such as Bluetooth (registered trademark) and Wi-Fi. Depending on the specifications, the electric board portion 8 may include a switch for turning on/off the power supply.

4 is a perspective view showing a state in which the housing is removed from the locking/unlocking control device of FIG. 1. FIG. FIG. 5 is a front view of the locking/unlocking control device of FIG. 1 with the housing removed, and shows the state of FIG. 4 with the rotor 3, potentiometer 16 and motor 17 removed. In the present embodiment, structural features are mainly described, and electric systems such as the electric board portion 8 and the power supply box 9 are not mentioned.

A housing member 11 , a rotating body 3 , a potentiometer gear 12 , a first gear 13 , a second gear 14 , a motor gear 15 , a potentiometer 16 and a motor 17 are provided on the rear member 6 . The motor 17 is driven by being supplied with power from a battery (not shown).

The housing member 11 has a cup shape for housing the thumb-turn 104 therein, and a first gear 11a is provided at the edge of the opening 7 thereof. The first gear 11a is engaged with the potentiometer gear 12 and the second gear 13, respectively. Note that the potentiometer gear 12 is not engaged with the second gear 13 . The first gear 11a, the potentiometer gear 12, the first gear 13, the second gear 14, and the motor gear 15 are spur gears.

The potentiometer gear 12 is for transmitting the rotation angle of the first gear 11 a to the potentiometer 16 so that the potentiometer 16 measures the rotation angle of the housing member 11 . Potentiometer 16 is a rotary potentiometer that detects the rotation angle.

The second gear 13 is provided with two protrusions 13a on its disk surface at point-symmetrical positions. The third gear 14 is layered on the second gear 13, has the same rotary shaft as the second gear 13, and is provided with two arc-shaped grooves 14a point-symmetrically. The protrusion 13a is fitted in the groove 14a. When the second gear 13 rotates relative to the third gear 14, the projection 13a moves relatively along the shape (arcuate shape) of the groove 14a. The third gear 14 is engaged with the motor gear 15 . The motor gear 15 is a gear for transmitting power from a motor 17 that is an electric drive device to the third gear 14 .

Here, operations of the first gear 11a, the second gear 13, and the third gear 14 will be described. First, the driving of the motor 17 will be described. When the motor 17 is driven, the motor gear 15 rotates and rotates the engaged third gear 14 .

At this time, even if the third gear 14 rotates, the second gear 13 rotates with a delay of a predetermined time due to the positional relationship between the groove 14a and the protrusion 13a. That is, when the rotation of the third gear 14 starts, the projection 13a advances along the arc-shaped groove 14a in a direction relatively opposite to the rotation direction of the third gear 14, and acts as an end (stopper) of the groove 14a. , its end begins to push against its abutting projection 13a. Then, the second gear 13 starts rotating. As the second gear 13 rotates, the engaged first gear 11a also starts rotating. The housing member 11 also rotates in accordance with the rotation of the first gear 11a. Then, the knob 103 of the thumb-turn 104 housed in the housing member 11 rotates to lock or unlock.

Next, the state when the motor 17 is stopped will be described. For example, the door 101 is manually locked or unlocked when the battery runs out, when an abnormality occurs in the electrical system, or in other emergencies. In this case, by rotating the knob 4 of the rotor 3, the knob 103 of the thumb-turn 104 can also be rotated, whereby the door 101 can be manually locked or unlocked.

However, when the knob 4 of the rotating body 3 rotates, the power generated by the rotation is transmitted as it is to the motor gear 15 via the first gear 11a, the second gear 13, and the third gear 14, and the motor stops. A load is applied to the motor 17 that is present. Then, there arises a possibility that the motor 17 will be out of order. Alternatively, depending on the motor, even if an attempt is made to manually move the stopped motor, it may be too heavy to move. Therefore, play is provided between the second gear 13 and the third gear 14 so that the power is not transmitted to the motor gear 15 at least within the range of rotating the knob 103 of the thumb-turn 104 . This will be explained in detail.

The knob 4 of the rotating body 3 is manually rotated. Then, the housing member 11 rotates in conjunction with this, and the first gear 11a provided on the edge of the opening 7 also rotates at the same time. When the first gear 11a rotates, the second gear 13 engaged therewith also starts rotating.

At this time, even if the second gear 13 rotates, the third gear 14 rotates with a delay of a predetermined time due to the positional relationship between the groove 14a and the protrusion 13a. That is, when the rotation of the second gear 13 starts, the protrusion 13a advances along the arcuate groove 14a in the direction of rotation of the second gear 13, and when it comes into contact with the other end (stopper) of the groove 14a, The abutting protrusion 13a begins to push its end. Then, the third gear 14 starts rotating.

Here, if the number of teeth of the _first gear 11a is Z1 and the number of revolutions is n1, and the number of teeth of the _second gear 13 is Z2 and the number of revolutions is _n2 , the speed ratio = _{Z2 /} Z1 = _n From ₁ / _n2 , it is expressed as _{n2 =} (Z1 _{/ Z2} )n1. Also, if the radius of the arc forming the groove 14a is r, and the angle of the sector forming the arc is θ, then the length L of the arc is

L≧2πr×(θ/360)=2πr×n2 ₌ 2πr _{× (} Z1 _/ Z2)n1
should be satisfied. As a result, the protrusion 13a does not reach the end of the groove 14 before the knob 103 of the thumb-turn 104 finishes rotating, and the motor 17 is not loaded.

As described above, when the motor 17 is driven, the third gear 14 rotates and the protrusion 13a contacts one end of the arcuate groove 14a, the third gear 14 and the second gear 13 rotate about the concentric shaft. do. The rotation of the second gear 13 causes the first gear 11a to rotate, and the rotation of the first gear 11a causes the housing member 11 to rotate. Rotation of the housing member 11 rotates the knob 103 of the thumb-turn 104 to lock or unlock the door 101 .

Further, when the motor 17 is stopped, the accommodating member 11 is rotated by rotating the rotor 3 . Rotation of the housing member 11 rotates the knob 103 of the thumb-turn 104 to lock or unlock the door 101 . _At this _time , the _{third gear 14} is stationary.

FIG. 6 is a perspective view of the housing member 11 that is housed in the knob 103 of the thumb-turn 104 in this embodiment. As described above, the edge of the opening 7 of the housing member 11 is provided with the first gear 11a. An opening 11c having a predetermined width is provided in the central portion of the ceiling portion 11b of the housing member 11 in the diametrical direction. An intermediate coupling portion 22 (a first coupling member 23 and a second coupling member 24 ) is attached near the ceiling inside the housing member 11 .

FIG. 7 is a diagram showing the housing member 11, the rotating body 3, and related members. FIG. 7 will be described below with reference to FIGS. 5 and 6. FIG. Annular spacers 20 and 21 are laminated between the ceiling portion 11b of the housing member 11 and the rotating body 3 so as to be sandwiched therebetween. The spacer 20 also has the function of reducing the frictional resistance of the rotational movement of the rotor 3 .

The rotor 3 is fixed to the ceiling portion 11b of the housing member 11 while sandwiching the spacers 20 and 21 therebetween. As a result, the rotation shafts of the rotor 3 and the housing member 11 can be the same.

An intermediate coupling portion 22 composed of a first coupling member 23 and a second coupling member 24 is attached inside the housing member 11 . The combination of the intermediate coupling portion 22 and the inner ceiling portion of the housing member 11 forms a joint structure that absorbs the deviation between the rotating shaft of the rotating body 3 and the rotating shaft of the knob 103 of the thumb-turn 104 in the housed state. there is The joint structure may be, for example, an Oldham's coupling-like joint structure.

In FIG. 7, the first gear 11a is formed separately from the housing member 11, but it is not limited to this, and may be integrally formed.

8 is a perspective view of the intermediate coupling portion 22 of FIG. 7. FIG. The intermediate coupling portion 22 is composed of a first coupling member 23 and a second coupling member 24 .

The second coupling member 24 is diametrically fixed to the center of the circular first coupling member 23 . The second coupling member 24 is provided with a groove (slit) 24a having a predetermined width in a straight line (in the X-axis direction).

The second coupling member 24 is configured such that the thumb-turn tab 103 fits into the groove 24a. The size (width, length, and depth) of groove 24 a is determined based on the size of the tab commonly marketed as tab 103 of thumb turn 104 of door 101 . In particular, by adjusting the width and length of the groove 24a, it is possible to adjust the position of the widely used thumb-turn 104 or knob 103 in the X-axis direction.

That is, the length of the groove 24a is configured to be longer than the length of the knob 103 of the thumb-turn 104 on the rotating surface. This makes it possible to absorb the displacement of the knob 103 of the thumb-turn 104 in the X direction.

Further, the width of the groove 24a is configured to be smaller than the diameter of the rotation surface of the knob 103 of the thumb-turn 104. As shown in FIG. As a result, the second coupling 24 rotates together with the storage member 11, and the knob 103 of the thumb-turn 104 is caught on the wall surface of the groove 24a, so that the knob 103 of the thumb-turn 104 can be rotated without idling.

The first coupling member 23 has a circular shape, and a groove (slit) 23b having a predetermined width is formed in the center in the diametrical direction. Four hook-shaped fixing portions 23c for fixing the second coupling member 24 are formed in the first coupling member 23 so as to surround the groove 23b.

The first coupling member 23 is provided with grooves 23a on both sides of the fixed second coupling member 24 in the radial direction perpendicular to the grooves 24a (Y-axis direction). The groove 23a will be described in detail with reference to FIG.

FIG. 9 is a diagram showing a state in which the first coupling member 23 is installed on the ceiling portion of the housing member 11 as viewed from the direction of the opening 7 of the housing member 11. As shown in FIG. In the first coupling member 23, two grooves 23a having a predetermined length are formed in a direction (Y-axis direction) perpendicular to the grooves 23b formed in the X-axis direction.

Two projections 11d provided on the inner ceiling portion of the housing member 11 are inserted into each of the grooves 23a. Thereby, the first coupling member 23 can slide only in the Y-axis direction with respect to the housing member 11 . As a result, by adjusting the length of the groove 23a, it is possible to adjust the relative movement distance of the projection 11d in the Y-axis direction. Therefore, it is possible to adjust the position of the thumb-turn 104 or the knob 103 in the Y-axis direction. This makes it possible to absorb the displacement of the knob 103 of the thumb-turn 104 in the Y direction.

From the above, even if the rotation axis of the knob 103 of the thumb-turn 104 and the rotation axis of the storage member 11 (that is, the rotation axis of the rotating body 3) do not match when the storage member 11 is put on the thumb-turn 104, the coupling portion 25 Therefore, the displacement of the rotation axis can be absorbed. As a result, even when rotating body 3 is manually rotated, knob 103 of thumb-turn 104 can always be easily rotated.

In the above embodiment, the projection 13a is provided on the second gear 13 and the groove 14a is provided on the third gear 14. However, the present invention is not limited to this. A protrusion may be provided on the gear 14 .

In addition, two protrusions and two arc-shaped grooves are provided in each of the second gear 13 and the third gear 14, but the number is not limited to two. may be one, or may be three or more. In the case of three or more, it may be necessary to provide arc-shaped grooves that are concentric and have different radii due to the space of the gear disk.

Also, although the joint structure of the Oldham's joint type is used as an example of the coupling part, it is not limited to this. Any coupling method may be used as long as it is configured.

In addition, in the present embodiment, two projections 11d are provided on the inner ceiling portion of the housing member 11, and two projections 11d are provided on the first coupling member 23 to guide the two projections 11d. For example, a protrusion may be provided on the first coupling member 23 side, and a groove for guiding the protrusion may be provided on the ceiling portion inside the housing member 11 .

The locking/unlocking control device 1 according to this embodiment includes:
a housing member 11 having a space for housing the thumb-turn 104 covering the thumb-turn 104 for locking or unlocking the door;
a first gear 11a provided along the edge of the opening 7 of the housing member 11;
a second gear 13 that engages with the first gear 11a and rotates according to the rotation of the first gear 11a;
a third gear 14 superimposed on the second gear 13, having the same rotation shaft as the second gear 13, and rotatable by a predetermined angle relative to the second gear 13;
a drive unit (motor 17) that rotates the third gear 14;
A rotating body 3 having a knob portion (knob 4), which is connected to the containing member 11 so that the rotation axis is the same, and rotates the containing member 11 by pinching and rotating the knob portion (knob 4). When,
characterized by comprising

By configuring in this way, it is possible to more easily realize a configuration in which no load is applied to the motor 17 when the door is manually opened and closed.

In the locking/unlocking control device 1,
One of the second gear 13 and the third gear 14 is formed with an arc-shaped groove (for example, a groove 14a) in the rotational direction of the one gear, and the other gear is inserted into the groove. A projection (for example, a projection 13a) is formed,
The second gear 13 has the arc-shaped groove (for example, the groove 14a) and the protrusion (for example, the protrusion 13a) along the rotation direction of the knob 103 of the thumb-turn 104 relative to the third gear 14. It is characterized by being relatively rotatable by the predetermined angle within a range of relative movement.

With this configuration, when the knob of the thumb-turn is manually rotated, it is possible to prevent transmission of the power due to the rotation to the motor 17 within the range in which the play of the predetermined angle is set.
In the locking/unlocking control device 1,
The predetermined angle is n ₂ = (Z ₁ /Z ₂ )n ₁ (Z ₁ : number of teeth of first gear, n ₁ : number of rotations of first gear, Z ₂ : number of teeth of second gear, n ₂ : number of rotations of the second gear) is equal to or greater than the rotation angle (=n ₂ /360°).

With this configuration, unless the second gear 13 rotates with respect to the third gear 14 by _a rotation angle (= _n2 /360°) calculated by n2 ₌ (Z1 _{/ Z2} )n1, , the third gear 14 is stationary. That is, when the locking/unlocking control device 1 is attached to the thumb-turn 104, the rotation of the knob 103 of the thumb _- turn 104 is completed before reaching that angle. does not occur.

The locking/unlocking control device 1 further includes:
A coupling portion 25 provided inside the accommodating member 11 for absorbing the deviation of the shaft between the rotation shaft of the knob 103 of the thumb-turn 104 and the rotation shaft of the rotating body 3.
characterized by comprising

With this configuration, even if the rotation axis of the knob 103 of the thumb-turn 104 does not coincide with the rotation axis of the storage member 11 (that is, the rotation axis of the rotor 3) when the storage member 11 is placed over the thumb-turn 104, , the coupling portion 25 can absorb the displacement of the rotation axis.

The coupling portion 25 is
a first coupling member 23 provided movably in a predetermined direction on the ceiling surface inside the housing member 11;
A second cup formed with a groove 24a longer than the length of the knob 103 of the thumb-turn 104 on the rotating surface when the knob 103 of the thumb-turn 104 that is fixed and housed in the first coupling part 23 is inserted. a ring member 24;
characterized by comprising

With this configuration, it is possible to easily form an Oldham's coupling that absorbs the deviation between the rotating shaft of the rotating body 3 and the rotating shaft of the knob 103 of the thumb-turn 104 in the accommodated state.

The present aspect has been described above based on the embodiments and modifications, but the above-described embodiments are intended to facilitate understanding of the present aspect, and do not limit the present aspect. This aspect may be modified and modified without departing from the spirit and scope of the claims, and this aspect includes equivalents thereof. Also, if the technical features are not described as essential in this specification, they can be deleted as appropriate.

Reference Signs List 1 lock/unlock control device 2 case 3 rotor 4 knob 5 rear member 6 rear member 11 housing member 11b ceiling 12 potentiometer gear 13 first gear 13a projection 14 second gear 14a groove 15 motor gear 16 potentiometer 17 motor 20 Spacer 21 Spacer 22 Intermediate coupling portion 23 First coupling member 24 Second coupling member

Claims (5)

a housing member covering a thumb-turn for locking or unlocking a door and having a space for housing the thumb-turn;
a rotating body having a knob portion, which is connected to the accommodating member so as to share a rotation axis, and rotates the accommodating member by pinching and rotating the knob portion;
a first gear provided along the edge of the opening of the housing member;
a second gear that engages with the first gear and rotates according to rotation of the first gear;
a third gear that shares a rotation shaft with the second gear and is rotatable by a predetermined angle relative to the second gear;
a drive unit that rotates the third gear;
A locking/unlocking control device comprising: Among the second gear and the third gear, one gear is formed with an arc-shaped groove in the rotational direction of the one gear, and the other gear is formed with a projection inserted into the groove. ,
The second gear is rotatable by the predetermined angle relative to the third gear within a range in which the protrusion relatively moves in the arc-shaped groove along the rotational direction of the knob of the thumb-turn. The locking/unlocking control device according to claim 1, characterized in that: The predetermined angle is
n2 ₌ ( _{Z1 / Z2} )n1
(Z ₁ : number of teeth of first gear, n ₁ : number of rotations of first gear, Z ₂ : number of teeth of second gear, n ₂ : number of rotations of second gear)
The locking/unlocking control device according to claim 1 or ₂ , wherein the rotation angle (=n2/360°) calculated by The locking/unlocking control device further includes:
4. Among claims 1 to 3, further comprising: a coupling portion provided inside said housing member for absorbing a deviation of an axis between a rotation axis of said thumb-turn knob and a rotation axis of said rotating body. The locking/unlocking control device according to any one of claims 1 to 3. The coupling part is
a first coupling member provided movably in a predetermined direction on the ceiling surface inside the housing member;
a second coupling member fixed to the first coupling portion and formed with a groove longer than the length of the rotation surface of the thumb-turn knob when the accommodated thumb-turn knob is inserted;
The locking/unlocking control device according to claim 4, characterized by comprising:

Images