WO2016088542A1 - Electronic lock - Google Patents
Electronic lock Download PDFInfo
- Publication number
- WO2016088542A1 WO2016088542A1 PCT/JP2015/082095 JP2015082095W WO2016088542A1 WO 2016088542 A1 WO2016088542 A1 WO 2016088542A1 JP 2015082095 W JP2015082095 W JP 2015082095W WO 2016088542 A1 WO2016088542 A1 WO 2016088542A1
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- WIPO (PCT)
- Prior art keywords
- input
- inner ring
- input member
- driving force
- outer ring
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/06—Locks or fastenings for special use for swing doors or windows, i.e. opening inwards and outwards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
Definitions
- the present invention relates to an electric lock that can be locked and unlocked by either electric input or manual input.
- housing-related devices have become more and more motorized with the trend toward smart houses, and in particular, doors equipped with electric locks that can be locked and unlocked keylessly are becoming widespread.
- the electric lock attached to the entrance door can be locked and unlocked not only by electric input but also by manual input using a conventional key in case of an emergency such as a power failure. It needs to be.
- Patent Document 1 an electric lock that can be locked / unlocked by either electric input or manual input is proposed in Patent Document 1 below.
- three clutch members a first clutch piece, a second clutch piece, and a lock piece
- a clutch gear driven by a motor and rotated to a fixed clutch shaft.
- Manual input member which is arranged in a state where it can be fitted, and the clutch gear and clutch member are locked during electric input and the drive arm engaged with the clutch member receives manual input from the key or thumb turn Locking and unlocking is performed by driving the deadbolt through the drive, and at the time of manual input, the drive arm interlocked with the manual input member releases the locked state between the clutch gear and the clutch member, and at the same time the manual input member is deadbolt Is driven and unlocked.
- the second clutch piece of the clutch member is formed in a fan shape, and the engaged portion provided at the end in the circumferential direction is engaged with the end of the drive arm.
- a wedge-shaped space is formed between the outer peripheral surface of the second clutch piece and the inner peripheral surface of the clutch gear, and a roller disposed in the wedge-shaped space is pushed into a narrow portion of the wedge-shaped space, thereby The two clutch pieces are locked.
- the roller that is a member that locks the clutch gear and the second clutch piece cannot be evenly arranged on the entire circumference of the clutch gear. (2 in the embodiment, when one of them is locked, the other is idled).
- the surface pressure of the roller tends to be high, and the inner surface of the clutch gear and the outer surface of the second clutch piece are formed during use due to early wear.
- the shape of the wedge-shaped space that is formed may collapse, causing a lock failure, and locking / unlocking with electric input may not be possible.
- the roller pushed into the narrow portion of the wedge-shaped space presses the second clutch piece against the clutch shaft, the rotational torque of the second clutch piece that rotates while sliding with the clutch shaft increases.
- an object of the present invention is to provide an electric lock that can be locked and unlocked by both electric input and manual input and can be used stably for a long period of time.
- the present invention provides a first input member that is rotationally driven by an electric input from a drive motor, a second input member that is rotationally driven by a manual input from a key or thumb turn, and a dead bolt.
- An output member for advancing and retreating, a reverse input blocking mechanism for transmitting the driving force of the drive motor to the first input member, locking the reverse input torque applied to the first input member, and stopping the first input member
- An electric lock comprising an input switching clutch for transmitting a driving force applied to the first input member or the second input member to an output member, and capable of being locked and unlocked by either an electric input or a manual input.
- the input switching clutch rotates integrally with the output member around the same axis as the second input member, on the radially inner side of the outer ring that rotates integrally with the first input member.
- an outer ring is provided between an outer ring that rotates integrally with the first input member by an electric input and an inner ring that rotates integrally with the output member.
- the rollers that lock the inner ring and the inner ring can be arranged in a balanced manner in the circumferential direction, and the surface pressure of the roller when the outer ring and the inner ring are locked is kept low. A structure that does not easily cause premature wear or uneven wear on the surface or eccentricity of the inner ring is adopted.
- a plurality of cam surfaces are provided in the circumferential direction on the outer circumferential surface of the inner ring, and gradually narrow in the circumferential direction between the inner circumferential cylindrical surface of the outer ring and each cam surface of the inner ring.
- a lock-release piece having a wedge-shaped space formed therein, a roller for inserting the roller and a spring for pushing the roller into a narrow portion of the wedge-shaped space, and pillar portions inserted into both sides in the circumferential direction of the wedge-shaped space.
- a torque transmission means for transmitting the rotation of the second input member to the inner ring with a slight angular delay between the second input member and the inner ring.
- the outer ring that rotates integrally with the first input member is locked to the inner ring via a roller, so that the driving force is transmitted to the inner ring and the output member, and the second input Drive to member Is added, the column part of the unlocking piece that rotates integrally with the second input member pushes the roller facing in the rotational direction against the elastic part of the spring toward the vast part of the wedge-shaped space, and After releasing the locked state of the inner ring, it is possible to employ a structure in which driving force is transmitted to the inner ring and the output member by the torque transmitting means.
- the reverse input blocking mechanism includes a worm gear to which a driving force is applied from the drive motor, and a worm wheel that meshes with the worm gear and is connected to the first input member so as to be able to transmit rotation, and is self-locking.
- a worm mechanism having a function can be employed.
- the electric lock of the present invention is an input switching clutch that transmits a driving force by electric input or manual input to the output member, and an outer ring that rotates integrally with the first input member by electric input, and an output member integrated with the output ring.
- the roller that locks the outer ring and the inner ring can be arranged in a balanced manner between the inner ring and the inner ring, so that the outer ring and inner ring of the input switching clutch are worn early or unevenly.
- a stable locking and unlocking operation can be obtained over a long period of time as compared with the conventional one incorporating a clutch mechanism in which the arrangement and number of rollers are largely restricted.
- this electric lock has a drive motor 2 and a drive inside a lock case 1 inserted and fixed between a pair of plate members B1 and B2 forming the inner and outer surfaces of the entrance door.
- An electric input gear (first input member) 3 that is rotationally driven by electric input from the motor 2, a manual input shaft (second input member) 6 that is rotationally driven by manual input from the key 4 or thumb turn 5, and a dead An output gear (output member) 8 for moving the bolt 7 back and forth, a worm mechanism 9 as a reverse input blocking mechanism provided between the drive motor 2 and the electric input gear 3, an electric input gear 3, a manual input shaft 6 and an output
- An input switching clutch 10 that is connected to each of the gears 8 and transmits the driving force of either electric input or manual input to the output gear 8 is provided, and can be locked and unlocked by either electric input or manual input. It is obtained by the.
- the lock case 1 is formed by inserting an inner box 1b opened on the thumb turn 5 side into an outer box 1a opened on the key 4 side.
- the outer box 1a and the plate member B1 on the inner surface side of the door are connected to the thumb box 5a.
- a thumb turn shaft 11 formed integrally therewith.
- the thumb turn shaft 11 is rotatably connected to one end of a key shaft 12 into which the tip of the key 4 is inserted.
- the other end of the key shaft 12 is rotatably supported by the inner box 1b.
- a thumb turn seat 13 for rotatably supporting the thumb turn shaft 11 is attached to the surface of the plate member B1 on the door inner surface side, and a key seat 14 is attached to the surface of the plate member B2 on the door outer surface side.
- the tip of the key 4 is inserted into the key shaft 12 through the key seat 14 and the plate member B2.
- the key shaft 12 has a keyhole 12 a into which the tip of the key 4 is inserted, and has two concave fan-shaped recesses that face each other in the radial direction. That is, the electric lock is unlocked when one fan-shaped recess is on the upper left and the other fan-shaped recess is on the lower right.
- the key shaft 12 is also pushed by the key 4 and rotated to the right, as shown in FIG. 3B.
- the electric lock is locked when the fan-shaped recess comes to the upper right and the other fan-shaped recess comes to the lower left.
- the key 4 cannot be inserted into and removed from the key seat 14 unless the cross-section of the tip portion extends in the vertical direction (the posture shown in FIG. 3A). Therefore, when the key 4 is locked with the key 4, As shown in FIG. 3B, after returning to the original posture after being reversed (turned to the left) (after the state shown in FIG. 3C), the key shaft 12 and the key seat 14 are pulled out.
- the electric input gear 3 is a worm wheel that constitutes a part of the worm mechanism 9 as will be described later, and an input switching clutch 10 is incorporated inside from an opening on one end side in the axial direction thereof. The opening is closed with a lid 15.
- the manual input shaft 6 has a large diameter at one end, and both ends are supported by the outer box 1a and the inner box 1b of the lock case 1 via sintered oil-impregnated bearings 16 and 17, respectively.
- a two-sided width portion 6a for transmitting a driving force to the output side is formed at a portion continuous with the small-diameter portion, as will be described later.
- a manual input gear 18 is key-fixed on the outer periphery between the two-surface width portion 6 a and the sintered oil-impregnated bearing 16 on one end side, and the thumb-turn gear is key-fixed on the outer periphery of the thumb-turn shaft 11. 19 is engaged. As a result, the manual input shaft 6 is driven to rotate by manual input from the key 4 or thumb turn 5.
- the worm mechanism 9 is connected to a main shaft 2 a of the drive motor 2 and is composed of a worm gear 20 that directly inputs a driving force from the drive motor 2 and an electric input gear 3 as a worm wheel that meshes with the worm gear 20.
- a self-locking function Accordingly, the driving force of the drive motor 2 is transmitted to the electric input gear 3, but the reverse input torque applied to the electric input gear 3 from the output side is locked and the electric input gear 3 is stopped.
- the input switching clutch 10 includes an outer ring 21 formed in a two-stage cylindrical shape, an inner ring 22 disposed radially inward of a large diameter portion of the outer ring 21, and an outer ring 21.
- An unlocking piece 25 having a roller 23 and a coil spring 24 incorporated between the inner peripheral surface of the large diameter portion and the outer peripheral surface of the inner ring 22, and a column portion 25 a inserted at a position facing the coil spring 24 across the roller 23.
- a side plate 26 disposed between the lock release piece 25 and the lid 15 of the electric input gear 3 and attached to the outer ring 21.
- the outer ring 21 of the input switching clutch 10 has a plurality of notches 21b formed on the outer periphery of a flange portion 21a provided at one end, and is formed on the outer periphery of the side plate 26 in a part of the notches 21b.
- the side plate 26 is fixed to the flange portion 21a by fitting and bending the claw 26a.
- the rotation prevention convex part 3a provided in the inner periphery of the electric input gear 3 is engage
- the outer ring 21 and the side plate 26 rotate integrally with the electric input gear 3.
- the inner ring 22 has a two-sided width portion 6a of the manual input shaft 6 inserted in an engagement hole 22a formed on one end side thereof, and a manual input shaft 6 on a hollow output shaft 27 integrally formed on the other end side.
- the small diameter portion is passed through and rotates about the same axis as the manual input shaft 6.
- the output shaft 27 is rotatably supported by a sintered oil-impregnated bearing 28 fitted to the inner periphery of the small diameter portion of the outer ring 21.
- the output gear 8 is keyed to the outer periphery of the output shaft 27 between the sintered oil-impregnated bearing 28 and the sintered oil-impregnated bearing 17 supporting the other end of the manual input shaft 6, and the inner ring 22 and the output shaft 27 are output. It rotates together with the gear 8.
- the engagement hole 22a of the inner ring 22 has substantially the same cross-sectional shape as the two-surface width portion 6a of the manual input shaft 6, and is formed so as to face each other with a slight clearance in the rotational direction. Thereby, the rotation of the manual input shaft 6 is transmitted to the inner ring 22 with a slight angular delay.
- a plurality of cam surfaces 22b orthogonal to the radial direction are provided on the outer periphery of the inner ring 22, and a wedge shape that gradually narrows on both sides in the circumferential direction between the cam surfaces 22b and the inner peripheral cylindrical surface of the outer ring 21.
- a space 29 is formed.
- a pair of rollers 23 is arranged with a coil spring 24 sandwiching the rollers 23 into the narrow portion of the wedge-shaped space 29, and unlocking pieces are provided on both sides in the circumferential direction of each wedge-shaped space 29.
- Twenty-five column portions 25a are inserted.
- the unlocking piece 25 is fitted and fixed to the outer periphery of the one end side portion of the two-surface width portion 6a of the manual input shaft 6 without a gap.
- the output gear 8 meshes with the pinion 30 meshing with the rack portion 7a of the dead bolt 7 on the side opposite to the dead bolt 7.
- the pinion 30 is rotatably supported by a support shaft 31 fixed to the inner box 1 b of the lock case 1.
- the dead bolt 7 has guide holes 7b extending in the longitudinal direction at two locations in the longitudinal direction, and the guide shaft 32 having a small diameter portion penetrating each guide hole 7b has a lock case at both ends thereof. 1 is supported by an outer box 1a and an inner box 1b.
- This electric lock has the above configuration, and its operation will be described below.
- the drive motor 2 is driven by an electric signal from the outside, the driving force is applied to the electric input gear 3 via the worm mechanism 6 and is transmitted to the output gear 8 by the action of the input switching clutch 10 described above.
- the dead bolt 7 is advanced and retracted in the longitudinal direction by the rotation of the output gear 8, and the distal end portion thereof protrudes and retracts from the lock case 1, thereby locking and unlocking is performed.
- the manual input shaft 6 and the manual input gear 18 also rotate together by the action of the input switching clutch 10, so that the rotation is transmitted to the thumb turn gear 19, and the thumb turn shaft 19 is integrated with the thumb turn gear 19.
- 11 and thumb turn 5 rotate (at the same time, the key shaft 12 connected to the thumb turn shaft 11 also rotates). Therefore, even when locked / unlocked by electric input, the locked / unlocked state can be seen by visually observing the thumb turn 5 from the inside of the entrance door.
- the tip of the key 4 is inserted into the key seat 14 and the key shaft 12 and rotated right (when locked) or left (when unlocked). Then, the driving force of the key 4 is applied to the manual input shaft 6 via the key shaft 12, the thumb turn shaft 11, the thumb turn gear 19 and the manual input gear 18, and is transmitted to the output gear 8 by the action of the input switching clutch 10 described above. Is done.
- the dead bolt 7 is moved back and forth in the longitudinal direction by the rotation of the output gear 8, and locking / unlocking is performed in the same manner as when the drive motor 2 is driven. Further, even when the thumb turn 5 is viewed from the thumb turn 5 side and rotated left (when locked) or right (when unlocked), locking / unlocking is performed in the same manner as when the key 4 is rotated.
- both the electric input from the drive motor 2 and the manual input from the key 4 or the thumb turn 5 can be smoothly locked and unlocked by the action of the input switching clutch 10.
- the input switching clutch 10 is a roller that locks the outer ring 21 and the inner ring 22 between the outer ring 21 that rotates integrally with the electric input gear 3 and the inner ring 22 that rotates together with the output gear 8 by electric input.
- 23 can be arranged in a balanced manner in the circumferential direction, so that the surface pressure of the roller 23 when the outer ring 21 and the inner ring 22 are locked is kept low, and the inner circumferential surface of the outer ring 21 and the outer circumference of the inner ring 22 are in use.
- the input switching clutch of the present invention is not limited to that of the above-described embodiment, and is integrated with the output member around the same axis as the second input member on the radially inner side of the outer ring that rotates integrally with the first input member.
- An inner ring that rotates is arranged, a plurality of rollers are arranged between the outer ring and the inner ring, and when a driving force is applied to the first input member, the outer ring locks with the inner ring through the roller, When the driving force is transmitted to the inner ring and the output member and the driving force is applied to the second input member, the outer ring and the inner ring are unlocked by the rotation of the second input member, and then the inner ring and the output member are driven. Any device that transmits power can be used.
- the worm mechanism 6 is employed as the reverse input blocking mechanism.
- the reverse input blocking mechanism is a high-deceleration rate reduction mechanism having a self-lock function other than the worm mechanism, and the input torque is transmitted to the output side.
- the electric input gear may be divided into a worm wheel that constitutes a part of the worm mechanism and a first input member, and both may be connected so as to be able to transmit rotation.
- the outer ring of the input switching clutch may be formed integrally with the electric input gear.
- the present invention relates to an electric lock
- the structure of the input switching clutch that transmits the driving force is widely applied to devices such as industrial robots that can be operated by either electric input or manual input. be able to.
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Abstract
Provided is an electronic lock that can be locked and unlocked by either electronic input or manual input and that can be used stably over a long time. An input switching clutch (10) that transfers driving force to the output side by electronic input or manual input is configured so as to: incorporate, in a plurality of wedge shaped spaces (29) that are formed between an outer ring (21) that rotates integrally with an electronic input gear (3) and an inner ring (22) that rotates integrally with an output gear (8), rollers (23) and a coil spring (24) that presses the rollers (23) toward the narrow portion of a wedge shaped space (29); couple a locking releasing piece (25) having a column part (25a) inserted into both sides in the circumferential direction of the wedge shaped spaces (29) to a manual input shaft (6) so that the rotation can be transmitted; and be provided with a torque transmission means to transmit the rotation of the manual input shaft (6) to the inner ring (22) with a slight delay angle. By virtue of such a configuration, the input switching clutch can have a plurality of the rollers (23) disposed in the circumferential direction to have good balance and is less likely to have premature wear and uneven wear of the outer ring (21) and inner ring (22) and eccentricity of the inner ring (22).
Description
本発明は、電動入力と手動入力のいずれによっても施錠・開錠が行えるようにした電気錠に関する。
The present invention relates to an electric lock that can be locked and unlocked by either electric input or manual input.
近年、住宅のスマートハウス化に伴って住宅関連装置の電動化が進んでおり、特に玄関ドアではキーレスで施錠・開錠が行える電気錠を取り付けたものが普及しつつある。ただし、玄関ドアに取り付けられる電気錠については、電動入力での施錠・開錠だけでなく、停電時等の緊急時に備えて従来の鍵を使った手動入力での施錠・開錠もできる構造となっている必要がある。
In recent years, housing-related devices have become more and more motorized with the trend toward smart houses, and in particular, doors equipped with electric locks that can be locked and unlocked keylessly are becoming widespread. However, the electric lock attached to the entrance door can be locked and unlocked not only by electric input but also by manual input using a conventional key in case of an emergency such as a power failure. It needs to be.
上記のように電動入力と手動入力のいずれによっても施錠・開錠が行えるようにした電気錠として、例えば、下記特許文献1で提案されているものがある。この特許文献1の電気錠は、モータによって駆動されるクラッチ歯車の内部に、3つのクラッチ部材(第1クラッチピース、第2クラッチピースおよびロックピース)を軸方向に重ねて固定のクラッチ軸に回転可能に嵌合させた状態で配置し、電動入力時には、クラッチ歯車とクラッチ部材とがロックして、クラッチ部材に係合する駆動アームが、鍵またはサムターンから手動入力を受ける手動入力部材(ダルマ)を介してデッドボルトを駆動することにより施錠・開錠を行い、手動入力時には、手動入力部材と連動する駆動アームがクラッチ歯車とクラッチ部材とのロック状態を解除すると同時に、手動入力部材がデッドボルトを駆動することにより施錠・開錠を行うようにしたものである。
As described above, for example, an electric lock that can be locked / unlocked by either electric input or manual input is proposed in Patent Document 1 below. In the electric lock disclosed in Patent Document 1, three clutch members (a first clutch piece, a second clutch piece, and a lock piece) are overlapped in the axial direction inside a clutch gear driven by a motor and rotated to a fixed clutch shaft. Manual input member (Dharma), which is arranged in a state where it can be fitted, and the clutch gear and clutch member are locked during electric input and the drive arm engaged with the clutch member receives manual input from the key or thumb turn Locking and unlocking is performed by driving the deadbolt through the drive, and at the time of manual input, the drive arm interlocked with the manual input member releases the locked state between the clutch gear and the clutch member, and at the same time the manual input member is deadbolt Is driven and unlocked.
上記特許文献1で提案された電気錠は、クラッチ部材のうちの第2クラッチピースを扇形に形成して、その周方向端部に設けた被係合部を駆動アームの端部と係合させるとともに、第2クラッチピースの外周面とクラッチ歯車の内周面との間に楔形空間を形成し、この楔形空間内に配されたローラが楔形空間の狭小部に押し込まれることによってクラッチ歯車と第2クラッチピースとがロックするようになっている。
In the electric lock proposed in Patent Document 1, the second clutch piece of the clutch member is formed in a fan shape, and the engaged portion provided at the end in the circumferential direction is engaged with the end of the drive arm. In addition, a wedge-shaped space is formed between the outer peripheral surface of the second clutch piece and the inner peripheral surface of the clutch gear, and a roller disposed in the wedge-shaped space is pushed into a narrow portion of the wedge-shaped space, thereby The two clutch pieces are locked.
ところが、第2クラッチピースが扇形に形成されていることにより、クラッチ歯車と第2クラッチピースとをロックさせる部材であるローラは、クラッチ歯車の全周に均等に配置することができず、その数も全周配置の場合に比べて少なくなる(実施例では2個で、その一方がロックするときは他方は空転する)。
However, since the second clutch piece is formed in a sector shape, the roller that is a member that locks the clutch gear and the second clutch piece cannot be evenly arranged on the entire circumference of the clutch gear. (2 in the embodiment, when one of them is locked, the other is idled).
このため、クラッチ歯車と第2クラッチピースとがロックしたときにローラの面圧が高くなりやすく、使用中にクラッチ歯車の内周面や第2クラッチピースの外周面の早期摩耗により、その間に形成されている楔形空間の形状が崩れてロック不良が発生し、電動入力での施錠・開錠ができなくなるおそれがある。また、ロック時には、楔形空間の狭小部に押し込まれたローラが第2クラッチピースをクラッチ軸に押し付けることになるので、クラッチ軸と摺動しながら回転する第2クラッチピースの回転トルクが大きくなって、電動入力での施錠・開錠がスムーズに行えなくなるおそれがあるし、クラッチ軸の外周面および第2クラッチピースのクラッチ軸嵌合孔の内周面の偏摩耗やクラッチ軸の偏心による駆動トルクの変動が生じやすいという問題もある。
For this reason, when the clutch gear and the second clutch piece are locked, the surface pressure of the roller tends to be high, and the inner surface of the clutch gear and the outer surface of the second clutch piece are formed during use due to early wear. The shape of the wedge-shaped space that is formed may collapse, causing a lock failure, and locking / unlocking with electric input may not be possible. Further, at the time of locking, since the roller pushed into the narrow portion of the wedge-shaped space presses the second clutch piece against the clutch shaft, the rotational torque of the second clutch piece that rotates while sliding with the clutch shaft increases. , There is a risk that locking / unlocking with electric input cannot be performed smoothly, and drive torque due to uneven wear of the outer peripheral surface of the clutch shaft and the inner peripheral surface of the clutch shaft fitting hole of the second clutch piece or eccentricity of the clutch shaft There is also a problem that fluctuations are likely to occur.
そこで、本発明は、電動入力と手動入力のいずれによっても施錠・開錠を行うことができ、長期間安定して使用できる電気錠を提供することを課題とする。
Therefore, an object of the present invention is to provide an electric lock that can be locked and unlocked by both electric input and manual input and can be used stably for a long period of time.
上記の課題を解決するため、本発明は、駆動モータからの電動入力によって回転駆動される第1入力部材と、鍵またはサムターンからの手動入力によって回転駆動される第2入力部材と、デッドボルトを進退させる出力部材と、前記駆動モータの駆動力を第1入力部材に伝達し、第1入力部材に加えられる逆入力トルクに対してはロックして第1入力部材を停止させる逆入力遮断機構と、前記第1入力部材または第2入力部材に加えられる駆動力を出力部材に伝達する入力切替クラッチとを備え、電動入力と手動入力のいずれによっても施錠・開錠が行えるようにした電気錠において、前記入力切替クラッチは、前記第1入力部材と一体回転する外輪の径方向内側に、前記第2入力部材と同一軸心のまわりに前記出力部材と一体に回転する内輪を配し、前記外輪と内輪との間に複数のローラを配して、前記第1入力部材に駆動力が加えられたときは、前記外輪がローラを介して内輪とロックすることにより、前記内輪および出力部材に駆動力が伝達され、前記第2入力部材に駆動力が加えられたときは、前記第2入力部材の回転により前記外輪と内輪のロック状態が解除された後、前記内輪および出力部材に駆動力が伝達される構成のものとした。
In order to solve the above problems, the present invention provides a first input member that is rotationally driven by an electric input from a drive motor, a second input member that is rotationally driven by a manual input from a key or thumb turn, and a dead bolt. An output member for advancing and retreating, a reverse input blocking mechanism for transmitting the driving force of the drive motor to the first input member, locking the reverse input torque applied to the first input member, and stopping the first input member An electric lock comprising an input switching clutch for transmitting a driving force applied to the first input member or the second input member to an output member, and capable of being locked and unlocked by either an electric input or a manual input. The input switching clutch rotates integrally with the output member around the same axis as the second input member, on the radially inner side of the outer ring that rotates integrally with the first input member. When a driving force is applied to the first input member by arranging a plurality of rollers between the outer ring and the inner ring, and the outer ring is locked with the inner ring via the rollers, When a driving force is transmitted to the inner ring and the output member and a driving force is applied to the second input member, the outer ring and the inner ring are unlocked by the rotation of the second input member, and then the inner ring The driving force is transmitted to the output member.
すなわち、電動入力または手動入力による駆動力を出力部材に伝達する入力切替クラッチとして、電動入力によって第1入力部材と一体に回転する外輪と、出力部材と一体に回転する内輪との間に、外輪と内輪とをロックさせるローラを周方向にバランスよく複数配置することができ、外輪と内輪とがロックしたときのローラの面圧が低く抑えられ、使用中に外輪の内周面や内輪の外周面の早期摩耗や偏摩耗、内輪の偏心が生じにくい構造のものを採用したのである。
That is, as an input switching clutch that transmits a driving force by electric input or manual input to an output member, an outer ring is provided between an outer ring that rotates integrally with the first input member by an electric input and an inner ring that rotates integrally with the output member. The rollers that lock the inner ring and the inner ring can be arranged in a balanced manner in the circumferential direction, and the surface pressure of the roller when the outer ring and the inner ring are locked is kept low. A structure that does not easily cause premature wear or uneven wear on the surface or eccentricity of the inner ring is adopted.
前記入力切替クラッチの具体的な構成としては、前記内輪の外周面にカム面を周方向に複数設けて、前記外輪の内周円筒面と内輪の各カム面との間に周方向で次第に狭小となる楔形空間を形成し、これらの各楔形空間に前記ローラとそのローラを楔形空間の狭小部へ押し込むばねを組み込み、前記各楔形空間の周方向両側に挿入される柱部を有するロック解除片を前記第2入力部材に回転伝達可能に連結し、前記第2入力部材と内輪との間に、第2入力部材の回転を僅かな角度遅れをもって内輪に伝達するトルク伝達手段を設け、前記第1入力部材に駆動力が加えられたときには、前記第1入力部材と一体回転する外輪がローラを介して内輪とロックすることにより、前記内輪および出力部材に駆動力が伝達され、前記第2入力部材に駆動力が加えられたときは、前記第2入力部材と一体回転するロック解除片の柱部が、回転方向で対向するローラを前記ばねの弾力に抗して楔形空間の広大部へ押しやって前記外輪と内輪のロック状態を解除した後、前記トルク伝達手段によって前記内輪および出力部材に駆動力が伝達されるようにしたものを採用することができる。
As a specific configuration of the input switching clutch, a plurality of cam surfaces are provided in the circumferential direction on the outer circumferential surface of the inner ring, and gradually narrow in the circumferential direction between the inner circumferential cylindrical surface of the outer ring and each cam surface of the inner ring. A lock-release piece having a wedge-shaped space formed therein, a roller for inserting the roller and a spring for pushing the roller into a narrow portion of the wedge-shaped space, and pillar portions inserted into both sides in the circumferential direction of the wedge-shaped space. And a torque transmission means for transmitting the rotation of the second input member to the inner ring with a slight angular delay between the second input member and the inner ring. When a driving force is applied to one input member, the outer ring that rotates integrally with the first input member is locked to the inner ring via a roller, so that the driving force is transmitted to the inner ring and the output member, and the second input Drive to member Is added, the column part of the unlocking piece that rotates integrally with the second input member pushes the roller facing in the rotational direction against the elastic part of the spring toward the vast part of the wedge-shaped space, and After releasing the locked state of the inner ring, it is possible to employ a structure in which driving force is transmitted to the inner ring and the output member by the torque transmitting means.
また、前記逆入力遮断機構としては、前記駆動モータから駆動力を加えられるウォーム歯車と、前記ウォーム歯車と噛み合い、前記第1入力部材に回転伝達可能に連結されるウォームホイールとを備え、セルフロック機能を有するウォーム機構を採用することができる。
The reverse input blocking mechanism includes a worm gear to which a driving force is applied from the drive motor, and a worm wheel that meshes with the worm gear and is connected to the first input member so as to be able to transmit rotation, and is self-locking. A worm mechanism having a function can be employed.
本発明の電気錠は、上述したように、電動入力または手動入力による駆動力を出力部材に伝達する入力切替クラッチとして、電動入力によって第1入力部材と一体に回転する外輪と、出力部材と一体に回転する内輪との間に、外輪と内輪とをロックさせるローラを周方向にバランスよく複数配置できるものを組み込んだので、使用中に入力切替クラッチの外輪や内輪の早期摩耗や偏摩耗、内輪の偏心が生じにくく、従来のローラの配置や数の制約が大きいクラッチ機構を組み込んだものよりも長期間にわたって安定した施錠・開錠動作が得られる。
As described above, the electric lock of the present invention is an input switching clutch that transmits a driving force by electric input or manual input to the output member, and an outer ring that rotates integrally with the first input member by electric input, and an output member integrated with the output ring. The roller that locks the outer ring and the inner ring can be arranged in a balanced manner between the inner ring and the inner ring, so that the outer ring and inner ring of the input switching clutch are worn early or unevenly. Thus, a stable locking and unlocking operation can be obtained over a long period of time as compared with the conventional one incorporating a clutch mechanism in which the arrangement and number of rollers are largely restricted.
以下、図1乃至図5Bに基づき、本発明の実施形態を説明する。この電気錠は、図1および図2に示すように、玄関ドアの内外面を形成する一対の板部材B1、B2の間に挿入固定される錠ケース1の内部に、駆動モータ2と、駆動モータ2からの電動入力によって回転駆動される電動入力歯車(第1入力部材)3と、鍵4またはサムターン5からの手動入力によって回転駆動される手動入力軸(第2入力部材)6と、デッドボルト7を進退させる出力歯車(出力部材)8と、駆動モータ2と電動入力歯車3との間に設けられる逆入力遮断機構としてのウォーム機構9と、電動入力歯車3、手動入力軸6および出力歯車8のそれぞれに連結され、電動入力と手動入力のいずれかの駆動力を出力歯車8に伝達する入力切替クラッチ10とを設け、電動入力と手動入力のいずれによっても施錠・開錠が行えるようにしたものである。
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5B. As shown in FIG. 1 and FIG. 2, this electric lock has a drive motor 2 and a drive inside a lock case 1 inserted and fixed between a pair of plate members B1 and B2 forming the inner and outer surfaces of the entrance door. An electric input gear (first input member) 3 that is rotationally driven by electric input from the motor 2, a manual input shaft (second input member) 6 that is rotationally driven by manual input from the key 4 or thumb turn 5, and a dead An output gear (output member) 8 for moving the bolt 7 back and forth, a worm mechanism 9 as a reverse input blocking mechanism provided between the drive motor 2 and the electric input gear 3, an electric input gear 3, a manual input shaft 6 and an output An input switching clutch 10 that is connected to each of the gears 8 and transmits the driving force of either electric input or manual input to the output gear 8 is provided, and can be locked and unlocked by either electric input or manual input. It is obtained by the.
前記錠ケース1は、鍵4側が開放された外箱1aに、サムターン5側が開放された内箱1bを入れ子状に挿入したもので、その外箱1aとドア内面側の板部材B1をサムターン5と一体形成されたサムターン軸11が貫通している。サムターン軸11は鍵4の先端部が挿入される鍵軸12の一端部と回転伝達可能に連結されており、その鍵軸12は他端部を内箱1bに回転自在に支持されている。なお、ドア内面側の板部材B1の表面には、サムターン軸11を回転自在に支持するサムターン座13が取り付けられており、ドア外面側の板部材B2の表面には鍵座14が取り付けられて、鍵4の先端部が鍵座14と板部材B2を貫通して鍵軸12に挿入されるようになっている。
The lock case 1 is formed by inserting an inner box 1b opened on the thumb turn 5 side into an outer box 1a opened on the key 4 side. The outer box 1a and the plate member B1 on the inner surface side of the door are connected to the thumb box 5a. And a thumb turn shaft 11 formed integrally therewith. The thumb turn shaft 11 is rotatably connected to one end of a key shaft 12 into which the tip of the key 4 is inserted. The other end of the key shaft 12 is rotatably supported by the inner box 1b. A thumb turn seat 13 for rotatably supporting the thumb turn shaft 11 is attached to the surface of the plate member B1 on the door inner surface side, and a key seat 14 is attached to the surface of the plate member B2 on the door outer surface side. The tip of the key 4 is inserted into the key shaft 12 through the key seat 14 and the plate member B2.
ここで、鍵軸12は、図2に示すように、鍵4の先端部を挿入される鍵穴12aが径方向で互いに対向する2つの断面扇形の凹部を有しており、この状態のとき、すなわち一方の扇形凹部が左上にあり、他方の扇形凹部が右下にあるときに電気錠が開錠状態となっている。そして、この開錠状態から、図3Aに示すように鍵軸12に差し込んだ鍵4を右回転させると、鍵軸12も鍵4に押されて右回転し、図3Bに示すように一方の扇形凹部が右上に、他方の扇形凹部が左下にきたときに電気錠が施錠される。なお、鍵4はその先端部の断面が上下方向に延びる姿勢(図3Aの姿勢)でなければ鍵座14に挿脱できないようになっているので、鍵4で施錠したときは、鍵4を図3Bに示すように反転(左回転)させてもとの姿勢に戻した後(図3Cの状態とした後)、鍵軸12および鍵座14から引き抜く。
Here, as shown in FIG. 2, the key shaft 12 has a keyhole 12 a into which the tip of the key 4 is inserted, and has two concave fan-shaped recesses that face each other in the radial direction. That is, the electric lock is unlocked when one fan-shaped recess is on the upper left and the other fan-shaped recess is on the lower right. When the key 4 inserted into the key shaft 12 is rotated to the right as shown in FIG. 3A from this unlocked state, the key shaft 12 is also pushed by the key 4 and rotated to the right, as shown in FIG. 3B. The electric lock is locked when the fan-shaped recess comes to the upper right and the other fan-shaped recess comes to the lower left. The key 4 cannot be inserted into and removed from the key seat 14 unless the cross-section of the tip portion extends in the vertical direction (the posture shown in FIG. 3A). Therefore, when the key 4 is locked with the key 4, As shown in FIG. 3B, after returning to the original posture after being reversed (turned to the left) (after the state shown in FIG. 3C), the key shaft 12 and the key seat 14 are pulled out.
また、図3Cの状態から鍵4を左回転させると(図3D)、鍵4に押された鍵軸12も左回転し、図3Eに示す開錠状態となる。鍵4で開錠したときも、鍵4を反転(右回転)させてもとの位置へ戻し(図3Fの状態)、鍵軸12および鍵座14から引き抜く。
Further, when the key 4 is rotated counterclockwise from the state of FIG. 3C (FIG. 3D), the key shaft 12 pressed by the key 4 is also rotated counterclockwise, and the unlocked state shown in FIG. 3E is obtained. Even when the key 4 is unlocked, the key 4 is reversed (turned to the right) and returned to its original position (the state shown in FIG. 3F), and pulled out from the key shaft 12 and the key seat 14.
前記電動入力歯車3は、後述するようにウォーム機構9の一部を構成するウォームホイールであり、その軸方向の一端側の開口から内側に入力切替クラッチ10が組み込まれるようになっており、その開口は蓋15で塞がれている。
The electric input gear 3 is a worm wheel that constitutes a part of the worm mechanism 9 as will be described later, and an input switching clutch 10 is incorporated inside from an opening on one end side in the axial direction thereof. The opening is closed with a lid 15.
前記手動入力軸6は、その一端側が大径に形成されており、両端部がそれぞれ焼結含油軸受16、17を介して錠ケース1の外箱1aおよび内箱1bに支持されている。その大径部のうち、小径部と連続する部分に、後述するように駆動力を出力側に伝達するための二面幅部6aが形成されている。そして、その二面幅部6aと一端側の焼結含油軸受16との間の外周に手動入力歯車18がキー固定され、この手動入力歯車18がサムターン軸11の外周にキー固定されたサムターン歯車19と噛み合っている。これにより、鍵4またはサムターン5からの手動入力によって手動入力軸6が回転駆動されるようになっている。
The manual input shaft 6 has a large diameter at one end, and both ends are supported by the outer box 1a and the inner box 1b of the lock case 1 via sintered oil-impregnated bearings 16 and 17, respectively. Of the large-diameter portion, a two-sided width portion 6a for transmitting a driving force to the output side is formed at a portion continuous with the small-diameter portion, as will be described later. A manual input gear 18 is key-fixed on the outer periphery between the two-surface width portion 6 a and the sintered oil-impregnated bearing 16 on one end side, and the thumb-turn gear is key-fixed on the outer periphery of the thumb-turn shaft 11. 19 is engaged. As a result, the manual input shaft 6 is driven to rotate by manual input from the key 4 or thumb turn 5.
前記ウォーム機構9は、駆動モータ2の主軸2aに接続されて、駆動モータ2から駆動力を直接入力されるウォーム歯車20と、ウォーム歯車20と噛み合うウォームホイールとしての電動入力歯車3とで構成され、セルフロック機能を有するものである。したがって、駆動モータ2の駆動力は電動入力歯車3に伝達するが、出力側から電動入力歯車3に加えられる逆入力トルクに対してはロックして電動入力歯車3を停止させる。
The worm mechanism 9 is connected to a main shaft 2 a of the drive motor 2 and is composed of a worm gear 20 that directly inputs a driving force from the drive motor 2 and an electric input gear 3 as a worm wheel that meshes with the worm gear 20. Have a self-locking function. Accordingly, the driving force of the drive motor 2 is transmitted to the electric input gear 3, but the reverse input torque applied to the electric input gear 3 from the output side is locked and the electric input gear 3 is stopped.
前記入力切替クラッチ10は、図1および図4に示すように、二段円筒状に形成された外輪21と、外輪21の大径部の径方向内側に配される内輪22と、外輪21の大径部内周面と内輪22の外周面との間に組み込まれるローラ23およびコイルばね24と、ローラ23を挟んでコイルばね24と対向する位置に挿入される柱部25aを有するロック解除片25と、ロック解除片25と電動入力歯車3の蓋15との間に配され、外輪21に取り付けられる側板26とを備えている。
As shown in FIGS. 1 and 4, the input switching clutch 10 includes an outer ring 21 formed in a two-stage cylindrical shape, an inner ring 22 disposed radially inward of a large diameter portion of the outer ring 21, and an outer ring 21. An unlocking piece 25 having a roller 23 and a coil spring 24 incorporated between the inner peripheral surface of the large diameter portion and the outer peripheral surface of the inner ring 22, and a column portion 25 a inserted at a position facing the coil spring 24 across the roller 23. And a side plate 26 disposed between the lock release piece 25 and the lid 15 of the electric input gear 3 and attached to the outer ring 21.
この入力切替クラッチ10の外輪21は、一端に設けられたフランジ部21aの外周部に複数の切欠き21bが形成されており、その一部の切欠き21bに、側板26の外周部に形成された爪26aを嵌め込んで折り曲げることにより、フランジ部21aに側板26が固定されている。そして、フランジ部21aの残りの切欠き21bと、これに対応する位置に形成された側板26の切欠き26bに、電動入力歯車3の内周に設けられた回り止め凸部3aが嵌め込まれて、外輪21および側板26が電動入力歯車3と一体回転するようになっている。
The outer ring 21 of the input switching clutch 10 has a plurality of notches 21b formed on the outer periphery of a flange portion 21a provided at one end, and is formed on the outer periphery of the side plate 26 in a part of the notches 21b. The side plate 26 is fixed to the flange portion 21a by fitting and bending the claw 26a. And the rotation prevention convex part 3a provided in the inner periphery of the electric input gear 3 is engage | inserted by the remaining notch 21b of the flange part 21a, and the notch 26b of the side plate 26 formed in the position corresponding to this. The outer ring 21 and the side plate 26 rotate integrally with the electric input gear 3.
一方、内輪22は、その一端側に形成された係合穴22aに手動入力軸6の二面幅部6aが挿入され、他端側に一体形成された中空の出力軸27に手動入力軸6の小径部が通されて、手動入力軸6と同一軸心のまわりに回転するようになっている。出力軸27は、外輪21の小径部の内周に嵌め込まれた焼結含油軸受28に回転自在に支持されている。そして、その焼結含油軸受28と手動入力軸6の他端側を支持する焼結含油軸受17との間の出力軸27外周に出力歯車8がキー固定され、内輪22および出力軸27が出力歯車8と一体回転するようになっている。
On the other hand, the inner ring 22 has a two-sided width portion 6a of the manual input shaft 6 inserted in an engagement hole 22a formed on one end side thereof, and a manual input shaft 6 on a hollow output shaft 27 integrally formed on the other end side. The small diameter portion is passed through and rotates about the same axis as the manual input shaft 6. The output shaft 27 is rotatably supported by a sintered oil-impregnated bearing 28 fitted to the inner periphery of the small diameter portion of the outer ring 21. The output gear 8 is keyed to the outer periphery of the output shaft 27 between the sintered oil-impregnated bearing 28 and the sintered oil-impregnated bearing 17 supporting the other end of the manual input shaft 6, and the inner ring 22 and the output shaft 27 are output. It rotates together with the gear 8.
この内輪22の係合穴22aは、手動入力軸6の二面幅部6aとほぼ同じ断面形状で、僅かな回転方向の隙間をおいて対向するように形成されている。これにより、手動入力軸6の回転が僅かな角度遅れをもって内輪22に伝達されるようになっている。
The engagement hole 22a of the inner ring 22 has substantially the same cross-sectional shape as the two-surface width portion 6a of the manual input shaft 6, and is formed so as to face each other with a slight clearance in the rotational direction. Thereby, the rotation of the manual input shaft 6 is transmitted to the inner ring 22 with a slight angular delay.
また、内輪22の外周には、径方向と直交する複数のカム面22bが設けられ、これらの各カム面22bと外輪21の内周円筒面との間に周方向両側で次第に狭小となる楔形空間29が形成されている。そして、これらの各楔形空間29に、一対のローラ23が各ローラ23を楔形空間29の狭小部に押し込むコイルばね24を挟んだ状態で配され、各楔形空間29の周方向両側にロック解除片25の柱部25aが挿入されている。そのロック解除片25は、手動入力軸6の二面幅部6aの一端側部分の外周に隙間なく嵌合固定されている。
In addition, a plurality of cam surfaces 22b orthogonal to the radial direction are provided on the outer periphery of the inner ring 22, and a wedge shape that gradually narrows on both sides in the circumferential direction between the cam surfaces 22b and the inner peripheral cylindrical surface of the outer ring 21. A space 29 is formed. In each wedge-shaped space 29, a pair of rollers 23 is arranged with a coil spring 24 sandwiching the rollers 23 into the narrow portion of the wedge-shaped space 29, and unlocking pieces are provided on both sides in the circumferential direction of each wedge-shaped space 29. Twenty-five column portions 25a are inserted. The unlocking piece 25 is fitted and fixed to the outer periphery of the one end side portion of the two-surface width portion 6a of the manual input shaft 6 without a gap.
この入力切替クラッチ10では、電動入力歯車3を介して外輪21に入力トルク(駆動力)が加えられると、コイルばね24の弾性力によって楔形空間29の狭小部に押し込まれている回転方向前側のローラ23を介して外輪21と内輪22とがロックするので、外輪21の回転が内輪22、出力軸27および出力歯車8に伝達される。このときには、回転方向前側のローラ23がロック解除片25の柱部25aを押すので、ロック解除片25が固定された手動入力軸6および手動入力歯車18も共回りする。
In the input switching clutch 10, when an input torque (driving force) is applied to the outer ring 21 via the electric input gear 3, the front side in the rotational direction is pushed into the narrow portion of the wedge-shaped space 29 by the elastic force of the coil spring 24. Since the outer ring 21 and the inner ring 22 are locked via the roller 23, the rotation of the outer ring 21 is transmitted to the inner ring 22, the output shaft 27 and the output gear 8. At this time, since the roller 23 on the front side in the rotation direction pushes the column portion 25a of the unlocking piece 25, the manual input shaft 6 and the manual input gear 18 to which the unlocking piece 25 is fixed also rotate together.
一方、手動入力歯車18を介して手動入力軸6に入力トルク(駆動力)が加えられたときには、まず、図5Aに示すように、手動入力軸6と一体回転するロック解除片25の柱部25aが回転方向後側の(回転方向で対向する)ローラ23をコイルばね24の弾性力に抗して楔形空間29の広大部へ押しやるので、そのローラ23と外輪21および内輪22との係合が解除され、外輪21と内輪22のロック状態が解除される。そして、図5Bに示すように、手動入力軸6がさらに回転して、その大径部の二面幅部6aが内輪22の係合穴22aの内面を押すようになると、手動入力軸6の回転が内輪22に伝達され、回転方向前側のローラ23と外輪21および内輪22との係合も解除されて、内輪22および出力軸27が出力歯車8と一体に回転する。
On the other hand, when an input torque (driving force) is applied to the manual input shaft 6 via the manual input gear 18, first, as shown in FIG. 5A, the column portion of the unlocking piece 25 that rotates integrally with the manual input shaft 6. 25a pushes the roller 23 on the rear side in the rotation direction (opposing in the rotation direction) against the large portion of the wedge-shaped space 29 against the elastic force of the coil spring 24, so that the roller 23 is engaged with the outer ring 21 and the inner ring 22 Is released, and the locked state of the outer ring 21 and the inner ring 22 is released. Then, as shown in FIG. 5B, when the manual input shaft 6 further rotates and the two-surface width portion 6a of the large diameter portion presses the inner surface of the engagement hole 22a of the inner ring 22, the manual input shaft 6 The rotation is transmitted to the inner ring 22, the engagement of the roller 23 on the front side in the rotation direction with the outer ring 21 and the inner ring 22 is also released, and the inner ring 22 and the output shaft 27 rotate integrally with the output gear 8.
なお、外輪21と手動入力軸6に同時に入力トルクが加えられたときには、手動入力軸6に固定されたロック解除片25が外輪21と内輪22のロック状態を解除するので、外輪21から内輪22への回転伝達は遮断され、手動入力軸6から内輪22への回転伝達が行われて出力歯車8が回転する(手動入力が優先される)。
When the input torque is simultaneously applied to the outer ring 21 and the manual input shaft 6, the lock release piece 25 fixed to the manual input shaft 6 releases the locked state of the outer ring 21 and the inner ring 22, so that the outer ring 21 to the inner ring 22 are released. Rotational transmission to is interrupted, and rotational transmission from the manual input shaft 6 to the inner ring 22 is performed, and the output gear 8 rotates (manual input has priority).
前記出力歯車8は、デッドボルト7のラック部7aと噛み合うピニオン30に、デッドボルト7と反対の側で噛み合っている。そのピニオン30は、錠ケース1の内箱1bに固定された支軸31に回転自在に支持されている。また、デッドボルト7は長手方向の2箇所に長手方向に延びるガイド孔7bが形成されており、これらの各ガイド孔7bを貫通する小径部を有するガイド軸32が、その両端部をそれぞれ錠ケース1の外箱1aおよび内箱1bに支持されている。これにより、出力歯車8が回転すると、デッドボルト7がガイド軸32の小径部に案内されて、その先端部を錠ケース1から出没させるようになっている。
The output gear 8 meshes with the pinion 30 meshing with the rack portion 7a of the dead bolt 7 on the side opposite to the dead bolt 7. The pinion 30 is rotatably supported by a support shaft 31 fixed to the inner box 1 b of the lock case 1. The dead bolt 7 has guide holes 7b extending in the longitudinal direction at two locations in the longitudinal direction, and the guide shaft 32 having a small diameter portion penetrating each guide hole 7b has a lock case at both ends thereof. 1 is supported by an outer box 1a and an inner box 1b. As a result, when the output gear 8 rotates, the dead bolt 7 is guided to the small diameter portion of the guide shaft 32, and the tip portion thereof is caused to appear and disappear from the lock case 1.
この電気錠は、上記の構成であり、その動作について以下に説明する。まず、外部から電気信号により駆動モータ2を駆動すると、その駆動力がウォーム機構6を介して電動入力歯車3に加えられ、前述の入力切替クラッチ10の作用によって出力歯車8に伝達される。そして、出力歯車8の回転によってデッドボルト7が長手方向に進退し、その先端部が錠ケース1から出没することにより施錠・開錠が行われる。
This electric lock has the above configuration, and its operation will be described below. First, when the drive motor 2 is driven by an electric signal from the outside, the driving force is applied to the electric input gear 3 via the worm mechanism 6 and is transmitted to the output gear 8 by the action of the input switching clutch 10 described above. Then, the dead bolt 7 is advanced and retracted in the longitudinal direction by the rotation of the output gear 8, and the distal end portion thereof protrudes and retracts from the lock case 1, thereby locking and unlocking is performed.
なお、このときには、前述のように、入力切替クラッチ10の作用により手動入力軸6および手動入力歯車18も共回りするので、その回転がサムターン歯車19に伝達され、サムターン歯車19と一体にサムターン軸11およびサムターン5が回転する(同時に、サムターン軸11に連結された鍵軸12も回転する)。したがって、電動入力によって施錠・開錠した場合でも、玄関ドアの内側からサムターン5を目視することによって施錠・開錠の状態がわかる。
At this time, as described above, the manual input shaft 6 and the manual input gear 18 also rotate together by the action of the input switching clutch 10, so that the rotation is transmitted to the thumb turn gear 19, and the thumb turn shaft 19 is integrated with the thumb turn gear 19. 11 and thumb turn 5 rotate (at the same time, the key shaft 12 connected to the thumb turn shaft 11 also rotates). Therefore, even when locked / unlocked by electric input, the locked / unlocked state can be seen by visually observing the thumb turn 5 from the inside of the entrance door.
次に、鍵4で施錠・開錠を行う場合は、鍵4の先端部を鍵座14および鍵軸12に差し込んで右回転(施錠時)または左回転(開錠時)させる。すると、鍵4の駆動力が、鍵軸12、サムターン軸11、サムターン歯車19および手動入力歯車18を介して手動入力軸6に加えられ、前述の入力切替クラッチ10の作用によって出力歯車8に伝達される。出力歯車8の回転によってデッドボルト7が長手方向に進退し、施錠・開錠が行われるのは、駆動モータ2を駆動したときと同じである。また、サムターン5をサムターン5側から見て左回転(施錠時)または右回転(開錠時)させても、鍵4を回転させる場合と同じ動作で施錠・開錠が行われる。
Next, when locking / unlocking with the key 4, the tip of the key 4 is inserted into the key seat 14 and the key shaft 12 and rotated right (when locked) or left (when unlocked). Then, the driving force of the key 4 is applied to the manual input shaft 6 via the key shaft 12, the thumb turn shaft 11, the thumb turn gear 19 and the manual input gear 18, and is transmitted to the output gear 8 by the action of the input switching clutch 10 described above. Is done. The dead bolt 7 is moved back and forth in the longitudinal direction by the rotation of the output gear 8, and locking / unlocking is performed in the same manner as when the drive motor 2 is driven. Further, even when the thumb turn 5 is viewed from the thumb turn 5 side and rotated left (when locked) or right (when unlocked), locking / unlocking is performed in the same manner as when the key 4 is rotated.
なお、鍵4またはサムターン5を回転させるときには、ウォーム機構9の作用により電動入力歯車3および外輪21は停止しているので、入力切替クラッチ10はスムーズに駆動力の伝達を行うことができる。すなわち、この電子錠では、手動入力により施錠・開錠しようとするときに、鍵4やサムターン5を軽く操作できるようになっている。
Note that when the key 4 or the thumb turn 5 is rotated, the electric input gear 3 and the outer ring 21 are stopped by the action of the worm mechanism 9, so that the input switching clutch 10 can transmit the driving force smoothly. That is, with this electronic lock, the key 4 and thumb turn 5 can be operated lightly when attempting to lock and unlock by manual input.
この電気錠では、上述したように、駆動モータ2からの電動入力と鍵4またはサムターン5からの手動入力のいずれの場合も、入力切替クラッチ10の作用によってスムーズに施錠・開錠を行うことができる。しかも、その入力切替クラッチ10は、電動入力によって電動入力歯車3と一体に回転する外輪21と、出力歯車8と一体に回転する内輪22との間に、外輪21と内輪22とをロックさせるローラ23を周方向にバランスよく複数配置することができるので、外輪21と内輪22とがロックしたときのローラ23の面圧が低く抑えられ、使用中に外輪21の内周面や内輪22の外周面の早期摩耗や偏摩耗、内輪22の偏心が生じにくい。したがって、従来のローラの配置や数の制約が大きいクラッチ機構を組み込んだものよりも長期間にわたって安定した施錠・開錠動作が得られる。
In this electric lock, as described above, both the electric input from the drive motor 2 and the manual input from the key 4 or the thumb turn 5 can be smoothly locked and unlocked by the action of the input switching clutch 10. it can. Moreover, the input switching clutch 10 is a roller that locks the outer ring 21 and the inner ring 22 between the outer ring 21 that rotates integrally with the electric input gear 3 and the inner ring 22 that rotates together with the output gear 8 by electric input. 23 can be arranged in a balanced manner in the circumferential direction, so that the surface pressure of the roller 23 when the outer ring 21 and the inner ring 22 are locked is kept low, and the inner circumferential surface of the outer ring 21 and the outer circumference of the inner ring 22 are in use. Premature wear and uneven wear of the surface and eccentricity of the inner ring 22 are unlikely to occur. Therefore, a stable locking / unlocking operation can be obtained over a long period of time compared to a conventional mechanism incorporating a clutch mechanism with a large arrangement and number of rollers.
なお、本発明の入力切替クラッチは、上述した実施形態のものに限らず、第1入力部材と一体回転する外輪の径方向内側に、第2入力部材と同一軸心のまわりに出力部材と一体に回転する内輪を配し、外輪と内輪との間に複数のローラを配して、第1入力部材に駆動力が加えられたときは、外輪がローラを介して内輪とロックすることにより、内輪および出力部材に駆動力が伝達され、第2入力部材に駆動力が加えられたときは、第2入力部材の回転により外輪と内輪のロック状態が解除された後、内輪および出力部材に駆動力が伝達されるようにしたものであればよい。
The input switching clutch of the present invention is not limited to that of the above-described embodiment, and is integrated with the output member around the same axis as the second input member on the radially inner side of the outer ring that rotates integrally with the first input member. An inner ring that rotates is arranged, a plurality of rollers are arranged between the outer ring and the inner ring, and when a driving force is applied to the first input member, the outer ring locks with the inner ring through the roller, When the driving force is transmitted to the inner ring and the output member and the driving force is applied to the second input member, the outer ring and the inner ring are unlocked by the rotation of the second input member, and then the inner ring and the output member are driven. Any device that transmits power can be used.
また、上述した実施形態では逆入力遮断機構としてウォーム機構6を採用したが、逆入力遮断機構は、ウォーム機構以外のセルフロック機能を有する高減速率の減速機構や、入力トルクを出力側に伝達し、出力側に加えられる逆入力トルクに対してはロックしてトルク伝達を遮断する逆入力遮断クラッチを採用することもできる。
In the above-described embodiment, the worm mechanism 6 is employed as the reverse input blocking mechanism. However, the reverse input blocking mechanism is a high-deceleration rate reduction mechanism having a self-lock function other than the worm mechanism, and the input torque is transmitted to the output side. In addition, it is possible to employ a reverse input cut-off clutch that locks against the reverse input torque applied to the output side and cuts off torque transmission.
また、電動入力歯車は、ウォーム機構の一部を構成するウォームホイールと第1入力部材とに分割して両者を回転伝達可能に連結したものとしてもよい。一方、電動入力歯車に入力切替クラッチの外輪を一体形成するようにしてもよい。
Further, the electric input gear may be divided into a worm wheel that constitutes a part of the worm mechanism and a first input member, and both may be connected so as to be able to transmit rotation. On the other hand, the outer ring of the input switching clutch may be formed integrally with the electric input gear.
また、本発明は電気錠に関するものであるが、その駆動力伝達を行う入力切替クラッチの構造は、電動入力と手動入力のいずれによっても作動できるようにした産業用ロボット等の装置に広く応用することができる。
Although the present invention relates to an electric lock, the structure of the input switching clutch that transmits the driving force is widely applied to devices such as industrial robots that can be operated by either electric input or manual input. be able to.
1 錠ケース
2 駆動モータ
3 電動入力歯車(第1入力部材)
4 鍵
5 サムターン
6 手動入力軸(第2入力部材)
7 デッドボルト
8 出力歯車(出力部材)
9 ウォーム機構(逆入力遮断機構)
10 入力切替クラッチ
11 サムターン軸
12 鍵軸
18 手動入力歯車
19 サムターン歯車
20 ウォーム歯車
21 外輪
22 内輪
23 ローラ
24 コイルばね
25 ロック解除片
25a 柱部
27 出力軸
29 楔形空間
30 ピニオン
32 ガイド軸
B1、B2 板部材 DESCRIPTION OFSYMBOLS 1 Lock case 2 Drive motor 3 Electric input gear (1st input member)
4Key 5 Thumb turn 6 Manual input shaft (second input member)
7Dead bolt 8 Output gear (output member)
9 Worm mechanism (reverse input blocking mechanism)
10 Input switching clutch 11Thumb turn shaft 12 Key shaft 18 Manual input gear 19 Thumb turn gear 20 Worm gear 21 Outer ring 22 Inner ring 23 Roller 24 Coil spring 25 Unlocking piece 25a Column 27 Output shaft 29 Wedge-shaped space 30 Pinion 32 Guide shafts B1 and B2 Plate member
2 駆動モータ
3 電動入力歯車(第1入力部材)
4 鍵
5 サムターン
6 手動入力軸(第2入力部材)
7 デッドボルト
8 出力歯車(出力部材)
9 ウォーム機構(逆入力遮断機構)
10 入力切替クラッチ
11 サムターン軸
12 鍵軸
18 手動入力歯車
19 サムターン歯車
20 ウォーム歯車
21 外輪
22 内輪
23 ローラ
24 コイルばね
25 ロック解除片
25a 柱部
27 出力軸
29 楔形空間
30 ピニオン
32 ガイド軸
B1、B2 板部材 DESCRIPTION OF
4
7
9 Worm mechanism (reverse input blocking mechanism)
10 Input switching clutch 11
Claims (3)
- 駆動モータからの電動入力によって回転駆動される第1入力部材と、鍵またはサムターンからの手動入力によって回転駆動される第2入力部材と、デッドボルトを進退させる出力部材と、前記駆動モータの駆動力を第1入力部材に伝達し、第1入力部材に加えられる逆入力トルクに対してはロックして第1入力部材を停止させる逆入力遮断機構と、前記第1入力部材または第2入力部材に加えられる駆動力を出力部材に伝達する入力切替クラッチとを備え、電動入力と手動入力のいずれによっても施錠・開錠が行えるようにした電気錠において、
前記入力切替クラッチは、前記第1入力部材と一体回転する外輪の径方向内側に、前記第2入力部材と同一軸心のまわりに前記出力部材と一体に回転する内輪を配し、前記外輪と内輪との間に複数のローラを配して、前記第1入力部材に駆動力が加えられたときは、前記外輪がローラを介して内輪とロックすることにより、前記内輪および出力部材に駆動力が伝達され、前記第2入力部材に駆動力が加えられたときは、前記第2入力部材の回転により前記外輪と内輪のロック状態が解除された後、前記内輪および出力部材に駆動力が伝達されるようにしたものであることを特徴とする電気錠。 A first input member that is rotationally driven by an electric input from a drive motor; a second input member that is rotationally driven by a manual input from a key or thumb turn; an output member that advances and retracts a dead bolt; To the first input member, locks against the reverse input torque applied to the first input member, and stops the first input member, and the first input member or the second input member In an electric lock that has an input switching clutch that transmits the applied driving force to the output member, and that can be locked and unlocked by either electric input or manual input,
The input switching clutch includes an inner ring that rotates integrally with the output member around the same axis as the second input member on the radially inner side of the outer ring that rotates integrally with the first input member, and the outer ring When a driving force is applied to the first input member by arranging a plurality of rollers between the inner ring and the inner ring, the outer ring is locked to the inner ring via the roller, thereby driving the inner ring and the output member. When the driving force is applied to the second input member, the driving force is transmitted to the inner ring and the output member after the outer ring and the inner ring are unlocked by the rotation of the second input member. An electric lock characterized in that it is made to be made. - 前記入力切替クラッチは、前記内輪の外周面にカム面を周方向に複数設けて、前記外輪の内周円筒面と内輪の各カム面との間に周方向で次第に狭小となる楔形空間を形成し、これらの各楔形空間に前記ローラとそのローラを楔形空間の狭小部へ押し込むばねを組み込み、前記各楔形空間の周方向両側に挿入される柱部を有するロック解除片を前記第2入力部材に回転伝達可能に連結し、前記第2入力部材と内輪との間に、第2入力部材の回転を僅かな角度遅れをもって内輪に伝達するトルク伝達手段を設け、前記第1入力部材に駆動力が加えられたときには、前記第1入力部材と一体回転する外輪がローラを介して内輪とロックすることにより、前記内輪および出力部材に駆動力が伝達され、前記第2入力部材に駆動力が加えられたときは、前記第2入力部材と一体回転するロック解除片の柱部が、回転方向で対向するローラを前記ばねの弾力に抗して楔形空間の広大部へ押しやって前記外輪と内輪のロック状態を解除した後、前記トルク伝達手段によって前記内輪および出力部材に駆動力が伝達されるようにしたものであることを特徴とする請求項1に記載の電気錠。 The input switching clutch includes a plurality of cam surfaces in the circumferential direction on the outer circumferential surface of the inner ring, and forms a wedge-shaped space that gradually narrows in the circumferential direction between the inner circumferential cylindrical surface of the outer ring and each cam surface of the inner ring. In each wedge-shaped space, the roller and a spring for pushing the roller into the narrow portion of the wedge-shaped space are incorporated, and the unlocking pieces having column portions inserted on both sides in the circumferential direction of the wedge-shaped space are the second input members. And a torque transmitting means for transmitting the rotation of the second input member to the inner ring with a slight angular delay between the second input member and the inner ring, and a driving force applied to the first input member. Is applied, the outer ring that rotates integrally with the first input member is locked to the inner ring via a roller, so that the driving force is transmitted to the inner ring and the output member, and the driving force is applied to the second input member. When The column portion of the unlocking piece that rotates integrally with the second input member pushes the roller opposed to the rotation direction against the elastic force of the spring to the wide part of the wedge-shaped space to release the locked state of the outer ring and the inner ring. 2. The electric lock according to claim 1, wherein a driving force is transmitted to the inner ring and the output member by the torque transmitting means.
- 前記逆入力遮断機構が、前記駆動モータから駆動力を加えられるウォーム歯車と、前記ウォーム歯車と噛み合い、前記第1入力部材に回転伝達可能に連結されるウォームホイールとを備え、セルフロック機能を有するウォーム機構であることを特徴とする請求項1または2に記載の電気錠。 The reverse input blocking mechanism includes a worm gear to which a driving force is applied from the drive motor, and a worm wheel that meshes with the worm gear and is coupled to the first input member so as to be able to transmit rotation, and has a self-locking function. The electric lock according to claim 1, wherein the electric lock is a worm mechanism.
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CN111473064A (en) * | 2020-04-16 | 2020-07-31 | 西安金茂科技有限公司 | Planetary backstop |
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JP2013083314A (en) * | 2011-10-11 | 2013-05-09 | Denso Corp | Driving device |
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CN109715898A (en) * | 2016-09-21 | 2019-05-03 | Ntn株式会社 | Drive force transfer mechanism and the electronic lock using it |
CN111473064A (en) * | 2020-04-16 | 2020-07-31 | 西安金茂科技有限公司 | Planetary backstop |
CN111473064B (en) * | 2020-04-16 | 2021-08-13 | 西安金茂科技有限公司 | Planetary backstop |
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