JP2019027221A - Locking device - Google Patents

Abstract

To provide a locking device that can be used as an electric lock in the normal form and that can be used as a mechanical lock by separating a body part from an electric drive part.SOLUTION: In the locking device, an electric drive part 10 and a body part 20 are unitized separately. The electric drive part 10 has a drive motor (driver) 12 and a slider (first input member) 18 that is driven linearly by the drive motor 12. The body part 20 has a first movement conversion mechanism 23 that coverts the linear movement of the slider 18 into the advancing and retracting movement of a deadbolt 22, and a second movement conversion mechanism 25 that converts the rotation movement of a hub gear (second input member) 24 due to manual input into the advancing and retracting movement of the deadbolt 22. The locking device has a configuration in which the slider 18 is detachably joined to a link plate 29 of the first movement conversion mechanism 23. Thereby, the locking device can be used as an electric lock in the normal form, and when the slider 18 is removed from the link plate 29, the locking device can be used as a mechanical lock by separating the body part 20 from the electric drive part 10.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a locking device that can be locked and unlocked by either electric input or manual input.

  2. Description of the Related Art In recent years, locking devices that are generally called “electric locks” or the like and can be locked and unlocked keylessly by electric input are becoming widespread. However, such a locking device (electric lock) is not only locked / unlocked by electric input, but also locked / unlocked by manual input using a conventional key or thumb-turn in case of an emergency such as a power failure. The structure must be able to.

  For example, in the electric lock proposed in Patent Document 1, the rear end portion of the dead bolt that is held so as to be linearly movable in the lock case is integrated with the final driven gear that is rotatably supported by the lock case. It is engaged with the arm, its final driven gear is connected to the drive motor via a plurality of gears, and an engagement hole for manual input is made in the center of the final driven gear. The rotation is transmitted to the final driven gear via each gear, and the operating arm rotates to move the dead bolt linearly to lock and unlock, and at the time of manual input, it rotates relative to the engagement hole of the final driven gear. Locking / unlocking is performed by turning the key inserted into the keyhole of the cylinder inserted through impossible or turning the thumb turn connected to the cylinder and moving the dead bolt linearly through the operating arm. That.

JP-A-4-368580

  By the way, in the electric lock as described above, since it is necessary to be able to lock and unlock both by electric input and manual input, a conventional lock (hereinafter referred to as “machine”) that locks and unlocks only by manual input. Compared to “lock”, the structure is complicated and the overall size must be large. In addition, it is necessary to always carry a remote controller for electric input and a key for manual input in case of emergency for an entrance door or the like, which may be troublesome.

  For this reason, depending on the installation space and application of the lock, it may be required to change the specification from an electric lock to a mechanical lock immediately before installation or to replace the electric lock after installation with a mechanical lock. In order to respond smoothly to such demands, it is sufficient to have a mechanical lock that can be easily replaced with an electric lock for each type of electric lock. Waste in the process increases.

  Therefore, an object of the present invention is to provide a locking device that can be used as an electric lock in a normal form and that can be used as a mechanical lock by separating a main body portion from an electric drive portion.

  In order to solve the above-described problems, the present invention provides an electric drive unit including a drive device that operates by energization, a first input member that is linearly driven by the drive device, a dead bolt, and the first input member. A first motion conversion mechanism that converts linear motion into dead bolt advance / retreat operation, a second input member that is rotationally driven by manual input from a key or thumb turn, and rotational motion of the second input member that And a main body portion having a second motion conversion mechanism for converting into a forward / backward motion, wherein the electric drive portion and the main body portion are each unitized, and the first input member serves as the first motion conversion mechanism. The electric drive unit and the main body unit are separated by separating the first input member from the first motion conversion mechanism, and the main body unit is a single unit. Than it was employed a possible configuration as 械錠.

  Here, the dead bolt can be fastened by a fastening member in a state where two plate-like members arranged in parallel with the advancing and retreating direction are opposed to each other with a predetermined interval. If it does in this way, while a deadbolt becomes light and the whole locking device can be reduced in weight, it can be set as a structure where a deadbolt can be easily connected with other parts.

  As described above, the locking device of the present invention includes the electric drive unit having the first input member that is linearly driven by the drive device, and the first motion conversion that converts the linear motion of the first input member into the forward / backward motion of the dead bolt. The main body having a second operation conversion mechanism that converts the rotation operation of the second input member by the mechanism and manual input into the advance / retreat operation of the deadbolt is unitized, and can be used as an electric lock in a normal form. 1 Since the main unit is separated from the electric drive unit by being separated from the motion conversion mechanism, it can be used as a mechanical lock. It is possible to respond smoothly to requests for replacement of locks with mechanical locks.

External perspective view of locking device of embodiment The front view which shows the outline of the internal structure of the locking device of FIG. 1 is an external perspective view of a dead bolt of the locking device of FIG. a and b are front views for explaining the operation of the electric drive unit at the time of locking by electric input corresponding to FIG. a and b are front views for explaining the operation of the main body at the time of locking by electric input corresponding to FIG. a and b are front views for explaining the operation of the electric drive unit at the time of unlocking by electric input corresponding to FIG. The front view which shows the state which isolate | separated the electric drive part and the main-body part corresponding to FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the locking device includes a rectangular parallelepiped upper case 11 that is a casing of the electric drive unit 10 and a rectangular parallelepiped lower case 21 that is a casing of the main body 20 in the longitudinal direction. A connecting plate which is arranged so as to face each other between the end faces of each other and connects a part of each internal part between the electric drive unit 10 and the main body unit 20 and covers one side surface of both cases 11 and 21 as will be described later. 1 and the upper plate 2 and the lower plate 3 that are overlapped on the surface of the connecting plate 1 are screwed to both cases 11 and 21 so that the unitized electric drive unit 10 and the main unit 20 are integrated. is there. Each of the cases 11 and 21 is obtained by integrating two lid-like case members with screws or the like, and FIG. 2 shows a case member of one of the cases 11 and 21 (front side in FIG. 1). It shows the state where is removed.

  The side wall on one side of the lower case 21, the connecting plate 1 and the lower plate 3 are provided with openings 4 at two locations, upper and lower, for allowing the dead bolts 22 of the main body 20 to protrude and retract as will be described later. Further, oblong holes 21a (not shown on the back side) for connecting a cylinder to the main body 20 are formed in the front and back side walls of the lower case 21. And as mentioned above, the opening for connecting a part of internal component is provided in the mutual contact surface of the upper case 11 and the lower case 21.

  The electric drive unit 10 includes, in an upper case 11, a drive motor 12 as a drive device, a plurality of batteries 13 serving as a drive source of the drive motor 12, and a worm gear 14 attached to an output shaft of the drive motor 12. A worm wheel 15 that meshes with the worm gear 14, a gear group 16 that transmits the rotation of the worm wheel 15 to the driven side, a rack 17 that is connected to the driven side of the gear group 16, and a rack 17 that supports linear movement. A rack-like slider 18 that is held so as to be linearly movable in the same direction as the rack 17 is housed.

  Here, the gear group 16 includes a first gear that rotates integrally with the worm wheel 15 on the same axis, a second gear that meshes with the first gear, a third gear that rotates integrally with the second gear, and a third gear. A fourth gear that meshes with the fourth gear, a fifth gear that rotates integrally with the same axis as the fourth gear, and a rack gear that meshes with both the fifth gear and the rack 17. The rotation of the worm wheel 15 is decelerated and transmitted to the rack gear. The rack 17 is linearly moved by the rotation of. In addition, each gear which comprises the worm wheel 15 and the gear group 16 is rotatably supported by the spindle provided in the upper case 11, respectively.

  The rack 17 is provided with a tooth meshing with the rack gear on one side wall thereof, and a concave groove extending in the longitudinal direction is provided on the back surface side. The concave groove is partitioned by an engaging portion 17a provided at the center in the longitudinal direction, and the ridges 18a provided on the surface of the slider 18 are fitted into both sides of the engaging portion 17a. As a result, when the rack gear rotates, until the engaging portion 17a comes into contact with the protrusion 18a of the slider 18 in the traveling direction, it is guided by the slider 18 and moves linearly alone. After coming into contact with the strip 18a, the slider 18 moves linearly.

  The slider 18 is a first input member that is linearly driven by the drive motor 12 as described above. And the lower end part protrudes from the upper case 11, enters into the lower case 21, and is connected to a part of the internal parts of the main body part 20 by a projection 18b provided on the surface of the lower end as will be described later.

  On the other hand, the main body portion 20 includes a dead bolt 22 that is held in the lower case 21 so as to be able to advance and retreat toward one side of the lower case 21 (the tip portion can protrude and retract from the lower case 21), and the slider 18 A first motion conversion mechanism 23 that converts linear motion into a forward / backward motion of the deadbolt 22, a hub gear 24 as a second input member that is rotationally driven by manual input from a key or thumb turn, and a rotational motion of the hub gear 24 as a deadbolt. The second motion conversion mechanism 25 that converts the movement to the 22 forward / backward movement and the holding mechanism 26 that holds the position of the dead bolt 22 in the forward / backward direction are accommodated.

  Here, as shown in FIG. 3, the dead bolt 22 has a plurality of fastening members in a state where two plate-like members 22a and 22b arranged in parallel to the advancing / retreating direction are opposed to each other with a predetermined interval. Are fastened by rivets 22c (only a part of which is shown). As a result, the dead bolt 22 itself becomes light and contributes to weight reduction of the entire locking device, and has a structure that can be easily connected to other components.

  As shown in FIG. 2, the dead bolt 22 as a whole is formed in a substantially H shape having four arm portions in plan view, and the two plate-like members 22a and 22b of the two tip side arm portions are formed. In the middle, a hook plate 27 is rotatably mounted in a plane parallel to both plate-like members 22a and 22b. Each hook plate 27 has a flange portion 27a on the distal end side facing one side of the lower case 21 and a flange portion 27b on the proximal end side close to the rotation fulcrum. In the state where the entire dead bolt 22 is in the lower case 21 (retracted), the base end side flange portion 27b is in contact with one side of a substantially rectangular frame member 28 that is partially open in plan view. The frame member 28 is fixed to the lower case 21 with screws or the like not shown.

  In addition, on one side of the rear end side arm portion of the dead bolt 22, each plate-like member 22a, 22b is provided with a recess 22d that engages with the first motion conversion mechanism 23 as described later, On the other hand, each plate-like member 22a, 22b is provided with a long hole 22e for avoiding interference with the second motion converting mechanism 25, as will be described later.

  The first motion conversion mechanism 23 includes a link plate 29 connected to the slider 18 of the electric drive unit 10 and a link that is rotatably supported by the lower case 21 and engages both the link plate 29 and the dead bolt 22. And arm 30. The link plate 29 and the link arm 30 are also constituent members of the second motion conversion mechanism 25 as will be described later.

  The link plate 29 has engaging portions extending in the direction orthogonal to the longitudinal direction at both ends in the longitudinal direction of the strip plate portion having an L-shaped cross section extending in the same direction as the slider 18. A long hole 29a for engaging with the link arm 30 is provided in the joint portion, and a long hole 29b (for engaging with a part of the second motion converting mechanism 25) is provided in the engaging portion at the other end (lower end). FIG. 5B is provided. Then, the projection 18b at the lower end of the slider 18 is fitted into the connecting hole 29c provided in the band plate portion, so that the slider 18 is detachably connected and linearly moves integrally.

  The link arm 30 includes an annular base portion rotatably attached to the lower case 21 and two arms 30a and 30b extending radially outward from the base portion, and is provided at a distal end portion of one arm 30a. The pin 30c is inserted into the long hole 29a on one end side of the link plate 29 and engaged with the link plate 29, and the tip of the other arm 30b is inserted into the recess 22d on the rear end side of the dead bolt 22 to Is engaged.

  In the first motion conversion mechanism 23, when the slider 18 moves linearly, the link plate 29 moves linearly therewith, and the link arm 30 engaged with the link plate 29 and one arm 30a rotates. When the other arm 30 b of the link arm 30 pushes the dead bolt 22, the dead bolt 22 is advanced and retracted.

  The hub gear 24 is rotatably supported on the outer peripheral side by a guide member 31 fixed to the lower case 21, and a cylinder (not shown) is inserted into an engagement hole 24a provided at the center so as not to be relatively rotatable. It is driven to rotate by manual input from a key inserted into a key hole at one end of the cylinder or a thumb turn connected to the other end of the cylinder. A partial gear 24b for engaging with a part of the second motion converting mechanism 25 is provided on a part of the outer periphery of the hub gear 24 as described later.

  The second motion conversion mechanism 25 includes a link plate 29 and a link arm 30 that are also components of the first motion conversion mechanism 23, and a link gear 32 that connects the link plate 29 to the hub gear 24.

  The link gear 32 is disposed between the two plate-like members 22 a and 22 b of the dead bolt 22, and has an annular base portion that is rotatably supported by a support shaft 33 fixed to the lower case 21. A partial gear 32c that meshes with the partial gear 24b of the hub gear 24 is provided on a part of the outer periphery of the base portion, which is composed of two arms 32a and 32b extending radially outward from the base portion. The support shaft 33 that supports the base portion is passed through the long holes 22e of the plate-like members 22a and 22b of the dead bolt 22, so that the dead bolt 22 does not interfere with the forward and backward movement of the dead bolt 22. . Then, a pin 32d provided at the tip of one arm 32a is inserted into the long hole 29b on the other end side of the link plate 29 and engaged with the link plate 29 (see FIG. 5B), and the other The distal end portion of the arm 32b is connected to a part of the holding mechanism 26 as will be described later.

  In the second motion conversion mechanism 25, when the hub gear 24 rotates, the link gear 32 meshing with the hub gear 24 rotates in the reverse direction, and the link plate 29 engaged with one arm 32a of the link gear 32 moves linearly. When the link plate 29 moves linearly, the link arm 30 rotates to advance and retract the dead bolt 22 as in the operation of the first motion conversion mechanism 23 described above.

  The holding mechanism 26 includes a rotation shaft 35 that is rotatably attached to the lower case 21, a spring support shaft 36 that is fixed to the rotation shaft 35 so as to penetrate the rotation shaft 35 in the radial direction, and a spring support. The coil spring 37 is mounted on the outer periphery of the shaft 36.

  The tip of the spring support shaft 36 is rotatably connected to the other arm 32b of the link gear 32, and the coil spring 37 is sandwiched between the rotation shaft 35 and the other arm 32b of the link gear 32 in a compressed state. ing.

  In this holding mechanism 26, the coil spring 37 urges the other arm 32b of the link gear 32 in the direction away from the rotation shaft 35, so that the link gear 32 has the same rotational direction as the previous locking / unlocking operation. By applying a rotational force in the direction, the position of the link gear 32 in the rotational direction and thus the position of the dead bolt 22 in the forward / backward direction is held until the next locking / unlocking operation is performed.

  Next, the locking / unlocking operation by electric input or manual input of the locking device will be described below. First, as shown in FIG. 1, FIG. 2, FIG. 4 (a) and FIG. 5 (a), when the entire dead bolt 22 is housed in the lower case 21 and is in the unlocked state, the dead bolt 22 Therefore, the link plate 29 of the main body 20 and the slider 18 of the electric drive unit 10 are located at the upper limit. In this unlocked state, the rack 17 of the electric drive unit 10 is in a neutral position where it engages with the rack gear at the driven side end of the gear group 16 at the center in the longitudinal direction, and the engagement portion 17a on the rear surface side of the rack 17 is the slider 18. It is set to be in contact with the lower ridge 18a on the surface.

  When the drive motor 12 is driven by an electric signal instructing locking from the above unlocked state (when electric input is performed), the driving force is applied to the rack 17 via the worm gear 14, the worm wheel 15, and the gear group 16. The rack 17 presses the lower protrusion 18a of the slider 18 downward with the engaging portion 17a. As shown in FIGS. 4B and 5B, when the slider 18 moves linearly together with the rack 17, the link plate 29 is integrated with the slider 18 by the action of the first motion converting mechanism 23 described above. Linearly moves downward, the link arm 30 rotates, and the dead bolt 22 advances to the forward limit, causing its tip to protrude from the lower case 21.

  At this time, the two hook plates 27 attached to the deadbolt 22 are advanced together with the deadbolt 22 in the first half of the advancement process of the deadbolt 22 by guiding the base end side flange portion 27b to the frame member 28, respectively. In the latter half, they rotate in opposite directions to cause the flange portion 27a on the tip side to protrude above and below the dead bolt 22. Then, the leading end of the dead bolt 22 enters the receiving hole of the receiving seat (not shown), and the hook portion 27a on the leading end side of each hook plate 27 enters the recess provided on the upper and lower surfaces of the receiving hole, thereby locking the state. It becomes.

  Further, at this time, with the linear movement of the link plate 29, the driven side and the driving side of the second motion conversion mechanism 25 are reversed, the link gear 32 rotates, and the hub gear 24 meshed therewith also rotates. At the same time, the rotation of the link gear 32 causes the spring support shaft 36 and the rotation shaft 35 of the holding mechanism 26 to rotate integrally, and the coil spring 37 rotates the link gear 32 in the same direction as the rotation direction in the present locking operation. In addition, the position of the link gear 32 in the rotational direction and the position of the dead bolt 22 in the forward / backward direction are maintained. By the action of the holding mechanism 26, the locked state is held until the next unlocking operation is performed.

  When the locking operation is completed as described above, the drive motor 12 stops once and then rotates in the reverse direction to linearly move the rack 17 upward. As shown in FIG. 6A, the rack 17 is in the neutral position. When the process returns to step (2), the drive motor 12 stops. At this time, since the engaging portion 17a of the rack 17 does not push the slider 18, the locked state is maintained. As will be described later, this rack 17 position control is intended to shorten the time required for the next unlocking operation by electric input, and a sensor and a control device (both for detecting that the rack 17 is in the neutral position) (Not shown).

  When the drive motor 12 is driven by the electrical signal instructing unlocking from the above-described locked state (the electric drive unit 10 is in the state of FIG. 6A), the components of the electric drive unit 10 and the main body unit 20 are locked. It operates in the opposite direction, and the entire dead bolt 22 is housed in the lower case 21 to be in an unlocked state (the electric drive unit 10 is in the state shown in FIG. 6B). To hold.

  Here, before the drive motor 12 is driven, the engaging portion 17a of the rack 17 comes into contact with the upper protrusion 18a of the slider 18 as shown in FIG. Since the drive motor 12 is driven, the linear movement of the slider 18 starts upward without time lag, and the unlocking operation can be completed in a shorter time than when the rack 17 position control is not performed. .

  After the unlocking operation is completed, the rack 17 is at the upper limit position as shown in FIG. 6B. However, the rack 17 position control rotates the drive motor 12 in the reverse direction to move the rack 17 to the neutral position. Therefore, it returns to the state of FIG. 4 (a) and FIG.

  On the other hand, when the hub gear 24 is rotationally driven by manual input from a key or thumb turn, the link gear 32 rotates and the link plate 29 moves linearly by the action of the second motion conversion mechanism 25 described above. Similarly, the link arm 30 rotates and the dead bolt 22 advances and retreats, and the locking / unlocking operation is performed. The state after the operation is held by the holding mechanism 26.

  In the above-described locking / unlocking operation by manual input, the slider 18 of the electric drive unit 10 moves linearly integrally with the link plate 29. However, since the rack 17 does not move from the neutral position, the position control of the rack 17 described above is performed. Not done.

  This locking device is configured as described above, and the electric drive unit 10 and the main body unit 20 are unitized, and the slider 18 of the electric drive unit 10 is a link plate 29 of the first motion conversion mechanism 23 of the main body unit 20. In the normal mode, it can be used as an electric lock. As shown in FIG. 7, the connecting plate 1, the upper plate 2, and the lower plate 3 are detached from the upper case 11 and the lower case 21, and the slider 18 is removed. Can be separated from the link plate 29 to separate the electric drive unit 10 and the main body unit 20, and the main body unit 20 can be used alone as a mechanical lock.

  Therefore, it is possible to smoothly respond to a specification change from an electric lock immediately before installation to a mechanical lock and a request for replacement of an electric lock after installation to a mechanical lock. In addition, at the time of manufacturing, electric locks and mechanical locks can be easily created from one type of design according to the order status, etc., so that the efficiency of the design / manufacturing process can be achieved.

  The locking device of the present invention is not limited to the above-described embodiment, and the electric drive unit and the main body unit are unitized, and the first input member of the electric drive unit serves as the first motion conversion mechanism of the main body unit. What is necessary is just to be connected so that attachment or detachment is possible and the electric drive part and the main-body part are separated by separating the first input member from the first motion conversion mechanism.

  For example, in the embodiment, the drive motor 12 is used as a drive device of the electric drive unit, and the drive force is applied to the rack 17 via the worm gear 14, the worm wheel 15, and the gear group 16, and the rack 17 and the slider 18 are linearly moved. However, it is also possible to use a solenoid actuator as a driving device and directly move the slider linearly with the driving force. In that case, parts from the worm gear to the rack are unnecessary, and the structure of the electric drive unit can be simplified.

DESCRIPTION OF SYMBOLS 1 Connection plate 2 Upper plate 3 Lower plate 4 Opening 10 Electric drive part 11 Upper case 12 Drive motor 13 Battery 14 Worm gear 15 Worm wheel 16 Gear group 17 Rack 18 Slider (1st input member)
18b Protrusion 20 Main body 21 Lower case 22 Dead bolt 22a, 22b Plate member 22c Rivet (fastening member)
23 first motion conversion mechanism 24 hub gear (second input member)
25 second motion conversion mechanism 26 holding mechanism 27 hook plate 28 frame member 29 link plate 29c connecting hole 30 link arm 31 guide member 32 link gear 33 support shaft 35 rotating shaft 36 spring support shaft 37 coil spring

Claims (2)

An electric drive unit having a drive device that operates by energization, and a first input member that is linearly driven by the drive device;
A dead bolt, a first motion converting mechanism that converts a linear motion of the first input member into a forward / backward motion of the dead bolt, a second input member that is rotationally driven by manual input from a key or thumb turn, and the second A main body having a second motion conversion mechanism that converts the rotational motion of the input member into the forward and backward motion of the deadbolt;
In a locking device comprising:
The electric drive unit and the main body unit are each unitized, the first input member is detachably connected to a first motion conversion mechanism, and the first input member is separated from the first motion conversion mechanism, The electric drive part and the main body part are separated, and the main body part can be used alone as a mechanical lock.   2. The deadbolt according to claim 1, wherein two plate-like members arranged in parallel with the advancing and retreating direction are fastened by a fastening member in a state of facing each other with a predetermined interval. The locking device as described.

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