CN111133164A

CN111133164A - Locking device

Info

Publication number: CN111133164A
Application number: CN201780093199.9A
Authority: CN
Inventors: 东重企
Original assignee: Assa Abloy Japan Co Ltd
Current assignee: Assa Abloy Japan Co Ltd
Priority date: 2017-08-02
Filing date: 2017-11-10
Publication date: 2020-05-08
Also published as: JP2019027221A; WO2019026301A1; KR102378354B1; JP7025096B2; KR20200038492A

Abstract

An electric drive unit (10) having a drive motor (drive device) (12) and a slider (1 st input member) (18) linearly driven by the drive motor (12), a main body unit (20) having a 1 st motion conversion mechanism (23) for converting the linear motion of the slider (18) into the advancing and retreating motion of a fixing pin (22) and a 2 nd motion conversion mechanism (25) for converting the rotational motion of a hub (2 nd input member) (24) into the advancing and retreating motion of the fixing pin (22) by manual input are unitized, and the slider (18) is detachably connected to a link piece (29) of the 1 st motion conversion mechanism (23), whereby the electric lock can be used in a normal state, when the slider (18) is disengaged from the link piece (29), the main body (20) and the electric drive unit (10) can be separated from each other and used as a mechanical lock.

Description

Locking device

Technical Field

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

Background

In recent years, a locking device that can be locked/unlocked without a key by an electric input, which is generally called an electric lock, has been widely used. However, such a locking device (electric lock) needs to have a structure in which: the locking/unlocking can be performed not only by an electric input but also by a manual input using a conventional key and a thumb turn (thumb turn) in order to cope with an emergency such as a power failure.

For example, in an electric lock proposed in patent document 1, a rear end portion of a dead bolt (dead bolt) held in a lock case so as to be linearly movable is engaged with an operating arm integrated with a final driven gear supported in the lock case so as to be rotatable, and the final driven gear is coupled to a drive motor via a plurality of gears, an engaging hole for manual input is formed in the center of the final driven gear, and when electric input is performed, rotation of the driving motor is transmitted to the final driven gear via the gears, the operating arm is rotated to linearly move the fixing bolt, thereby performing locking/unlocking, when the manual input is performed, a key inserted into a key hole of a key cylinder inserted into an engagement hole of a final driven gear in a relatively non-rotatable manner is turned, alternatively, the locking/unlocking operation is performed by rotating a thumb turn coupled to the key cylinder and linearly moving the dead bolt via the operating arm.

Patent document

Patent document 1: japanese laid-open patent publication No. 4-368580

Disclosure of Invention

However, in the electric lock as described above, since it is necessary to realize the locking/unlocking by both the electric input and the manual input, the structure is complicated and the entire size is inevitably increased as compared with a conventional lock (hereinafter, referred to as a "mechanical lock") which locks/unlocks only by the manual input. In addition, when the remote controller is used for closing doors, it is necessary to always carry a remote controller for electric input and a key for manual input in an emergency, which may be troublesome.

Therefore, depending on the installation space and the use of the lock, it is sometimes required to change the specification from the electric lock to the mechanical lock immediately before the installation and to replace the electric lock to the mechanical lock after the installation. In order to smoothly meet such a demand, mechanical locks that can be easily replaced with electric locks may be prepared for each type of electric lock, but if such a product system is to be prepared, the number of meaningless works in the design/manufacturing 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 mode and can also be used as a mechanical lock by separating a main body portion and an electric drive portion.

In order to solve the above problem, a locking device according to the present invention includes: an electric drive unit having a drive device that operates by energization and a 1 st input member that is linearly driven by the drive device; and a main body having a fixing bolt, a 1 st motion conversion mechanism for converting a linear motion of the 1 st input member into a forward/backward motion of the fixing bolt, a 2 nd input member rotationally driven by a manual input from a key or a thumber, and a 2 nd motion conversion mechanism for converting a rotational motion of the 2 nd input member into a forward/backward motion of the fixing bolt, wherein the locking device is configured as follows: the electric drive unit and the main body unit are unitized separately, the 1 st input member is detachably coupled to the 1 st motion conversion mechanism, and the electric drive unit and the main body unit are separated by detaching the 1 st input member from the 1 st motion conversion mechanism, whereby the main body unit can be used as a single mechanical lock.

Here, the fixing pin may be configured by fastening 2 plate-like members arranged in parallel in the advancing and retreating direction with a fastening member in a state of facing each other with a predetermined interval. This makes the dead bolt lighter, reduces the weight of the entire locking device, and makes it possible to easily connect the dead bolt to another member.

Effects of the invention

As described above, the locking device of the present invention is configured such that the electric drive unit having the 1 st input member linearly driven by the drive unit and the body unit having the 1 st motion conversion mechanism for converting the linear motion of the 1 st input member into the advancing and retreating motion of the tumbler and the 2 nd motion conversion mechanism for converting the rotational motion of the 2 nd input member into the advancing and retreating motion of the tumbler by the manual input are unitized, and can be used as an electric lock in a normal mode, and the body unit can be used as a mechanical lock by separating the 1 st input member from the 1 st motion conversion mechanism, and therefore, it is possible to smoothly meet the requirements for changing the specification from the electric lock to the mechanical lock immediately before installation and replacing the electric lock to the mechanical lock after installation.

Drawings

Fig. 1 is an external perspective view of a locking device according to an embodiment.

Fig. 2 is a front view schematically showing an internal structure of the locking device of fig. 1.

Fig. 3 is an external perspective view of a fixing bolt of the locking device of fig. 1.

Fig. 4(a) and (b) are front views respectively illustrating the operation of the electric drive unit when locking is performed by the electric input, corresponding to fig. 2.

Fig. 5(a) and (b) are front views respectively illustrating the operation of the main body when locked by the electric input, corresponding to fig. 2.

Fig. 6(a) and (b) are front views each illustrating the operation of the electric drive unit when unlocking is performed by electric input, corresponding to fig. 2.

Fig. 7 is a front view showing a state where the electric drive unit and the main body unit are separated from each other in correspondence with fig. 2.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this locking device, as shown in fig. 1 and 2, the rectangular parallelepiped upper case 11 as the case of the electric drive unit 10 and the rectangular parallelepiped lower case 21 as the case of the main body unit 20 are disposed vertically in a state of abutting against each other, and as will be described later, a part of each internal component is connected between the electric drive unit 10 and the main body unit 20, and the electric drive unit 10 and the main body unit 20 are integrated by fixing a connecting piece 1 covering one side surface of the two

cases

11 and 21 and an upper piece 2 and a lower piece 3 superposed on the surface of the connecting piece 1 to the two

cases

11 and 21 by screws. Each of the

housings

11 and 21 is formed by integrating 2 cover-shaped housing members with each other by screws or the like, and fig. 2 shows a state where the housing member on one side (front side in fig. 1) of each of the

housings

11 and 21 is removed.

As will be described later, the opening 4 for allowing the fixing plug 22 of the body 20 to be inserted and withdrawn is provided in the upper and lower portions 2 of the side wall of the lower case 21, the connecting piece 1, and the lower piece 3. Further, oval holes 21a (the rear surface side is not shown) for coupling the key cylinder and the main body portion 20 are formed in the front and rear side walls of the lower case 21. As described above, the abutting surfaces of the upper case 11 and the lower case 21 that abut against each other are provided with openings for coupling parts of the internal components.

The electric drive unit 10 houses, in an upper case 11: a drive motor 12 as a drive means; a plurality of batteries 13 serving as a drive source for driving the motor 12; a worm 14 attached to an output shaft of the drive motor 12; a worm wheel 15 that meshes with the worm 14; a gear train 16 that transmits the rotation of the worm wheel 15 to the driven side; a rack 17 coupled to a driven side of the gear train 16; and a rail-like slider 18 that supports the rack 17 so as to be linearly movable, and is held so as to be linearly movable in the same direction as the rack 17.

Here, the gear train 16 is composed of a 1 st gear that rotates integrally with the worm wheel 15 about the same axis, a 2 nd gear that meshes with the 1 st gear, a 3 rd gear that rotates integrally with the 2 nd gear about the same axis, a 4 th gear that meshes with the 3 rd gear, a 5 th gear that rotates integrally with the 4 th gear about the same axis, and a rack gear that meshes with both the 5 th gear and the rack 17, and the rotation of the worm wheel 15 is decelerated and transmitted to the rack gear, and the rack 17 is linearly moved by the rotation of the rack gear. The worm wheel 15 and the gears constituting the gear train 16 are rotatably supported by support shafts provided in the upper housing 11.

One side wall of the rack 17 is provided with teeth that mesh with the rack gear, and the back side is provided with a groove that extends in the longitudinal direction. The groove is partitioned by an engaging portion 17a provided at the center in the longitudinal direction, and a convex strip 18a provided on the surface of the slider 18 is fitted into each of portions on both sides of the engaging portion 17 a. Thus, when the rack gear rotates, the engaging portion 17a is guided by the slider 18 and linearly moves alone until it comes into contact with the convex strip 18a of the slider 18 in the traveling direction, and after coming into contact with the convex strip 18a of the slider 18, the engaging portion 17a linearly moves together with the slider 18.

As described above, the slider 18 serves as the 1 st input member linearly driven by the drive motor 12. The lower end portion of the case projects from the upper case 11 into the lower case 21, and is connected to a part of the internal components of the main body 20 by a projection 18b provided on the surface of the lower end portion as will be described later.

On the other hand, the main body portion 20 accommodates, in a lower case 21: a fixing pin 22 which is held so as to be able to advance and retreat to and from one side of the lower case 21 (the tip end portion of which is able to protrude from and retract from the lower case 21); a 1 st motion conversion mechanism 23 for converting the linear motion of the slider 18 into the forward and backward motion of the fixing pin 22; a hub (hub gear)24 as a 2 nd input member, which is rotationally driven by a manual input from a key or a thumbwheel; a 2 nd motion converting mechanism 25 for converting the rotational motion of the hub gear 24 into the advancing and retreating motion of the fixing bolt 22; and a holding mechanism 26 that holds the forward and backward position of the fixing pin 22.

As shown in fig. 3, the fixing pin 22 is configured by fastening 2 plate-

like members

22a and 22b arranged in parallel in the advancing and retreating direction with a plurality of rivets 22c (only a part of which is shown) as fastening members facing each other at a predetermined interval. This makes the dead bolt 22 itself light, contributes to weight reduction of the entire locking device, and has a structure that is easily connected to other members.

As shown in fig. 2, the fixing plug 22 is formed in a substantially H shape having 4 arm portions as a whole in a plan view, and a hook piece 27 is rotatably attached to a surface parallel to the plate-

like members

22a and 22b between the plate-

like members

22a and 22b of the 2 arm portions on the tip side. Each hook piece 27 has: a hook 27a on the front end side, which faces one side of the lower case 21; and a hook portion 27b on the base end side, which is close to the pivot. The base-end hook 27b abuts against one side of a substantially rectangular frame member 28 that is partially open in a plan view in a state where the entire fixing plug 22 is in the lower case 21 (retracted). The frame member 28 is fixed to the lower case 21 by screws or the like, which are not shown.

Further, in one of the rear-end side arm portions of the fixing bolt 22, a concave portion 22d for engaging with the 1 st motion conversion mechanism 23 as described later is provided in each of the plate-

like members

22a and 22b, and in the other of the rear-end side arm portions, an elongated hole 22e for avoiding interference with the 2 nd motion conversion mechanism 25 as described later is provided in each of the plate-

like members

22a and 22 b.

The 1 st motion conversion mechanism 23 includes a link piece 29 coupled to the slider 18 of the electric drive unit 10, and an interlocking arm 30 supported on the lower case 21 so as to be rotatable and engaged with both the link piece 29 and the fixing pin 22. As will be described later, the link piece 29 and the link arm 30 are also components of the 2 nd motion conversion mechanism 25.

The link piece 29 has engaging portions extending in a direction orthogonal to the longitudinal direction at both ends in the longitudinal direction of a strip-shaped plate portion extending in the same direction as the slider 18 and having an L-shaped cross section, a long hole 29a for engaging with the link arm 30 is provided at the engaging portion at one end (upper end), and a long hole 29b for engaging with a part of the 2 nd motion conversion mechanism 25 is provided at the engaging portion at the other end (lower end) (see fig. 5 (b)). The projection 18b at the lower end of the slider 18 is fitted into the coupling hole 29c provided in the band-shaped plate portion, and thereby the slider 18 is detachably coupled to the slider 18 and linearly moves integrally.

The interlocking arm 30 is composed of an annular base rotatably attached to the

lower housing

21 and 2

arms

30a and 30b extending radially outward from the base, and a pin 30c provided at the tip of one arm 30a is inserted into an elongated hole 29a on one end side of the interlocking piece 29 to engage with the interlocking piece 29, and the tip of the other arm 30b is inserted into a recess 22d on the rear end side of the fixing plug 22 to engage with the fixing plug 22.

In the 1 st motion conversion mechanism 23, if the slider 18 moves linearly, the link piece 29 moves linearly integrally therewith, the interlocking arm 30 engaged with the link piece 29 at one arm 30a rotates, and the other arm 30b of the interlocking arm 30 pushes the fixing plug 22, thereby advancing and retreating the fixing plug 22.

The hub 24 is supported rotatably on the outer peripheral side by a guide member 31 fixed to the lower case 21, and a key cylinder, not shown, is inserted into an engagement hole 24a provided in the center so as not to be relatively rotatable, and is rotated and driven by a manual input from a key inserted into a key hole at one end of the key cylinder or a thumbwheel coupled to the other end of the key cylinder. As will be described later, a partial gear 24b for engaging with a part of the 2 nd motion conversion mechanism 25 is provided on a part of the outer periphery of the hub gear 24.

The 2 nd motion converting mechanism 25 includes an interlocking piece 29 and an interlocking arm 30 which are also components of the 1 st motion converting mechanism 23, and an interlocking gear 32 which connects the interlocking piece 29 and the hub 24.

The interlocking gear 32 is disposed between the 2-piece plate-

like members

22a and 22b of the fixing pin 22, and is composed of an annular base portion rotatably supported by a support shaft 33 fixed to the

lower case

21, and 2

arms

32a and 32b extending radially outward from the base portion, and a partial gear 32c meshing with the partial gear 24b of the hub gear 24 is provided in a part of the outer periphery of the base portion. The support shaft 33 that supports the base portion passes through the elongated holes 22e of the plate-

like members

22a and 22b of the fixing pin 22, and does not interfere with the fixing pin 22 even if the fixing pin 22 advances or retreats. A pin 32d provided at the tip end of one of the arms 32a is inserted into the elongated hole 29b at the other end of the interlocking piece 29 and engaged with the interlocking piece 29 (see fig. 5 b), and the tip end of the other arm 32b is coupled to a part of the holding mechanism 26 as described later.

In the 2 nd motion converting mechanism 25, if the hub 24 rotates, the interlocking gear 32 engaged therewith rotates in the opposite direction, and the interlocking piece 29 engaged with one arm 32a of the interlocking gear 32 linearly moves. Then, if the interlocking piece 29 moves linearly, the interlocking arm 30 rotates to advance and retreat the fixing pin 22, similarly to the operation of the 1 st motion conversion mechanism 23 described above.

The holding mechanism 26 includes a rotating shaft 35 rotatably attached to the lower case 21, a spring support shaft 36 fixed to the rotating shaft 35 in a state of radially penetrating the rotating shaft 35, and a coil spring 37 attached to an outer periphery of the spring support shaft 36.

The tip end portion of the spring support shaft 36 is rotatably coupled to the other arm 32b of the interlocking gear 32, and the coil spring 37 is sandwiched between the rotating shaft 35 and the other arm 32b of the interlocking gear 32 in a compressed state.

In the holding mechanism 26, the coil spring 37 biases the other arm 32b of the interlocking gear 32 in a direction away from the rotating shaft 35, and applies a rotational force to the interlocking gear 32 in the same direction as the rotational direction in the previous locking/unlocking operation, thereby holding the rotational direction position of the interlocking gear 32 and the forward/backward direction position of the fixing bolt 22 until the next locking/unlocking operation is performed.

Next, the locking/unlocking operation of the locking device by electric input or manual input will be described. First, as shown in fig. 1, 2, 4(a) and 5(a), when the entire fixing plug 22 is housed in the lower case 21 and is in the unlocked state, the fixing plug 22 is at the retreat limit position, and the link piece 29 of the body portion 20 and the slider 18 of the electric drive portion 10 are at the upper limit position. In this unlocked state, the rack 17 of the electric drive unit 10 is in a neutral position in which the central portion in the longitudinal direction thereof meshes with the rack gear at the driven end of the gear train 16, and the engagement portion 17a on the back side of the rack 17 is set in a state in which it abuts against the lower ridge 18a on the front surface of the slider 18.

When the drive motor 12 is driven (if electrically input) by an electric signal for instructing locking from the unlocked state, the driving force is applied to the rack 17 via the worm 14, the worm wheel 15, and the gear train 16, and the rack 17 presses the lower ridge 18a of the slider 18 downward by the engaging portion 17a thereof. Then, as shown in fig. 4(b) and 5(b), if the slider 18 linearly moves downward together with the rack 17, the interlocking piece 29 linearly moves downward integrally with the slider 18 by the action of the 1 st motion conversion mechanism 23 to rotate the interlocking arm 30, and the fixing pin 22 moves forward to the advance limit position and the tip end portion thereof protrudes from the lower case 21.

At this time, the 2 hook pieces 27 attached to the fixing pin 22 guide the base-end hook portions 27b to the frame member 28, and thereby advance together with the fixing pin 22 in the first half of the advancing process of the fixing pin 22, and rotate in opposite directions to each other in the second half to project the front-end hook portions 27a upward and downward of the fixing pin 22. Then, the distal end portion of the fixing plug 22 enters a receiving hole of a receiving base, not shown, and the hook portion 27a on the distal end side of each hook piece 27 enters a recess provided on the upper and lower surfaces of the receiving hole, thereby being locked.

At this time, the driven side and the driving side of the 2 nd motion conversion mechanism 25 are reversed with the linear movement of the link plate 29, the link gear 32 rotates, and the hub 24 engaged therewith also rotates. At the same time, the spring support shaft 36 and the rotation shaft 35 of the holding mechanism 26 are rotated integrally by the rotation of the interlocking gear 32, and the coil spring 37 applies a rotational force to the interlocking gear 32 in the same direction as the rotational direction in the current locking operation, so that the rotational direction position of the interlocking gear 32 and the forward and backward direction position of the fixing bolt 22 are held. The locked state is maintained until the next unlocking operation is performed by the operation of the holding mechanism 26.

Then, if the locking operation is completed as described above, the drive motor 12 is once stopped, and then rotates in the reverse direction to linearly move the rack 17 upward, and as shown in fig. 6(a), the drive motor 12 is stopped if the rack 17 returns to the neutral position. At this time, the engaging portion 17a of the rack 17 does not push the slider 18, and thus the locked state is maintained. As will be described later, the position of the rack 17 is controlled by a sensor and a control device (both not shown) for detecting that the rack 17 is in the neutral position, in order to shorten the time required for the next unlocking operation by the electric input.

When the drive motor 12 is driven by an electric signal for instructing unlocking from the above-described locked state (the state in which the electric drive unit 10 is shown in fig. 6 a), the components of the electric drive unit 10 and the main body 20 are operated in the direction opposite to the locking direction, the entire deadbolt 22 is housed in the lower case 21 to be in the unlocked state (the state in which the electric drive unit 10 is shown in fig. 6 b), and the holding mechanism 26 holds the unlocked state.

Here, since the engagement portion 17a of the rack 17 is set in a state of abutting against the convex strip 18a on the upper side of the slider 18 as shown in fig. 6(a) by the above-described rack 17 position control before the driving motor 12 is driven, if the driving motor 12 is driven, the upward linear movement of the slider 18 is started without a time lag, and the unlocking operation can be completed in a shorter time than the case where the rack 17 position control is not performed.

After the completion of the unlocking operation, as shown in fig. 6(b), the rack 17 is at the upper limit position, but the rack 17 position control causes the drive motor 12 to rotate in the reverse direction and the rack 17 to move to the neutral position, so that the state returns to the state shown in fig. 4(a) and 5 (a).

On the other hand, if the hub 24 is rotationally driven by a manual input from a key or a thumbwheel, the interlocking gear 32 is rotated and the interlocking piece 29 is linearly moved by the action of the 2 nd motion conversion mechanism 25, so that the interlocking arm 30 is rotated to advance and retreat the fixing bolt 22 and perform a locking/unlocking operation as in the case of an electric input, and the state after the operation is held by the holding mechanism 26.

In the locking/unlocking operation by the manual input, the slider 18 of the electric drive unit 10 also linearly moves integrally with the interlocking piece 29, but the rack 17 is not moved from the neutral position, and therefore the above-described position control of the rack 17 is not performed.

The locking device has the above-described configuration, the electric drive unit 10 and the main body unit 20 are separately unitized, and the slider 18 of the electric drive unit 10 is detachably coupled to the interlocking piece 29 of the 1 st motion conversion mechanism 23 of the main body unit 20, so that the locking device can be used as an electric lock in a normal state, and as shown in fig. 7, the electric drive unit 10 and the main body unit 20 can be separated from each other by detaching the coupling piece 1, the upper piece 2, and the lower piece 3 from the upper case 11 and the lower case 21 and separating the slider 18 from the interlocking piece 29, and the main body unit 20 can be used as a mechanical lock alone.

Therefore, it is possible to smoothly respond to a request for changing the specification from the electric lock to the mechanical lock immediately before installation and for changing the electric lock to the mechanical lock after installation. Further, since the electric lock and the mechanical lock can be easily manufactured according to one design in accordance with the order situation or the like at the time of manufacturing, efficiency of the design/manufacturing process can be improved.

The locking device of the present invention is not limited to the above-described embodiments, and may be any device as long as: the electric drive unit and the main body unit are unitized separately, the 1 st input member of the electric drive unit is detachably coupled to the 1 st motion conversion mechanism of the main body unit, and the electric drive unit and the main body unit are separated by disengaging the 1 st input member from the 1 st 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 14, the worm wheel 15, and the gear train 16 to linearly move the rack 17 and the slider 18, but an electromagnetic actuator may be used as a drive device, and the slider may be directly linearly moved by the drive force. In this case, a member from the worm to the rack is not required, and the configuration of the electric drive portion can be simplified.

Description of the reference numerals

1 connecting piece

2 upper sheet

3 lower sheet

4 opening

10 electric drive part

11 upper shell

12 drive motor

13 cell

14 worm

15 worm wheel

16 gear set

17 rack

18 sliding part (1 st input component)

18b projection

20 main body part

21 lower casing

22 fixing bolt

22a, 22b plate-like member

22c rivet (fastening component)

23 st motion changing mechanism

24 tooth hub (2 nd input component)

25 nd 2 nd motion changing mechanism

26 holding mechanism

27 hook piece

28 frame component

29 linkage piece

29c connecting hole

30 linkage arm

31 guide member

32 linkage gear

33 support shaft

35 rotating shaft

36 spring support shaft

37 helical spring

Claims

1. A locking device includes:

an electric drive unit having a drive device that operates by energization and a 1 st input member that is linearly driven by the drive device; and

a main body part having a fixing plug, a 1 st motion conversion mechanism for converting a linear motion of the 1 st input member into an advancing and retreating motion of the fixing plug, a 2 nd input member rotationally driven by a manual input from a key or a thumbor, and a 2 nd motion conversion mechanism for converting a rotational motion of the 2 nd input member into an advancing and retreating motion of the fixing plug,

it is characterized in that the preparation method is characterized in that,

the electric drive unit and the main body unit are unitized separately, the 1 st input member is detachably coupled to the 1 st motion conversion mechanism, and the electric drive unit and the main body unit are separated by detaching the 1 st input member from the 1 st motion conversion mechanism, whereby the main body unit can be used as a single mechanical lock.

2. A locking apparatus according to claim 1,

the fixing pin is formed by fastening 2 plate-shaped members arranged in parallel in the advancing and retreating direction with a fastening member in a state of facing each other with a predetermined interval.