JP4611816B2 - Electric lock clutch mechanism and electric lock - Google Patents

Description

  The present invention relates to an electric lock clutch mechanism and an electric lock.

  In Patent Document 1, “a driving motor controlled and driven by a control unit, a gear transmission means for transmitting the driving force of this driving motor to the dharma, a dead bolt that moves forward and backward by the driving force of the dharma, and a manual operating force. In the clutch mechanism of the electric lock provided with the clutch means capable of disconnecting the driving force of the rotating dharma with respect to the drive motor, by an operation of an external operation member attached to the lock box in the event of a fire or an earthquake "Matters for retracting the dead bolt into the lock box through the operation of the emergency unlocking means provided in the lock box" are described.

  Therefore, the emergency unlocking means is basically a rod-like external operation member provided directly or indirectly in the lock box, and is provided rotatably in the lock box, and the external operation member. A release lever having one end pivotally attached to the inner end thereof, and a rack plate in which the upper end engages with the other end of the release lever and the other end engages with the unlocking receiving gear. It is composed of a long plate-like unlocking plate that is operatively engaged and connected.

  In the above configuration, when an external operation member is operated in a certain direction by destroying the surface plate of the storage box for the external operation member attached to the side wall of the lock box in an emergency, the L-shaped release lever is As a result, the dead bolt can be retracted into the lock box via the unlocking plate, the rack plate, the unlocking receiving gear, and the dharma.

  Therefore, the invention described in Patent Document 1 can be used to force the electric lock to be unlocked when an external operation member is operated in the event of a fire or earthquake, so it is suitable for emergency exit doors such as theaters and large event venues. is doing.

However, since the invention described in Patent Document 1 is an electric lock that assumes an emergency in a specific place, when unlocking in an emergency, the outer plate or the like of the storage box is destroyed and the external operation member is fixed. There is a need to operate in the direction. Therefore, there is a problem that the unlocked state may not be made using an operation member such as a key when an abnormality such as a power failure occurs.
Therefore, in consideration of the problem of Patent Document 1, the applicant is not only normal at the time of complete locking, but also at the time of abnormality (for example, at the time of power failure), even if a dead bolt protrudes halfway, An electric lock clutch mechanism that can be forcibly unlocked has been proposed (hereinafter, the newly proposed clutch mechanism is referred to as “prior application invention”).
The invention of the prior application has solved the problem of Patent Document 1 by using, for example, an engagement plate that can rotate independently with the drive gear, or a capture plate that can rotate with the drive gear and can be frictionally rotated. Is excellent.

  However, the engagement relationship between the drive gear (clutch gear) of the prior invention and the engagement plate (clutch plate) incorporated in the recess of the drive gear is related to the engaged portion (notch portion) in the recess. Because of the relationship with the engagement protrusions of the elastic engagement displacement portion (resin spring portion) of the plywood, the drive gear may run idle during operation. I will lay down this issue.

  For example, in the clutch mechanism of the first embodiment, “the drive gear (clutch gear) is incorporated in a recess formed on the upper surface of one side of the drive gear and is normally combined with the drive arm and the drive gear. A non-circular engaging plate that works, and when an abnormal torque is applied to the engaging plate through the drive arm by a keying operation in an abnormal state, the engaging plate It is composed of a synthetic resin engagement plate (clutch plate) having an elastic engagement displacement portion that can be displaced inward so as to be disengaged from the engagement portion.

  However, in the first embodiment, each function such as the rigid function (hardness), the elastic displacement function (softness), the elastic return function (spring force), etc. of the elastic engagement displacement portion of the engagement plate and the coverage of the drive gear is provided. A delicate balance with the shape of the engaging portion (locking force, frictional force) is required.

  That is, if the engagement relationship between the two members is insufficient (the engagement force is weak), the drive gear may run idle. On the other hand, if the engagement relationship between the two members is strong (the engagement force is strong), the key is locked. When unlocking using the operating member, there is a drawback that the engagement plate does not rotate easily (the engagement relationship is not canceled by a weak force) unless a considerable force is applied. In other words, children and the elderly cannot easily unlock when there is an abnormality.

Accordingly, there is a demand for the appearance of a novel clutch mechanism (hereinafter, this newly proposed clutch mechanism will be referred to as a “subsequent invention”) that improves the problems of the invention of the prior application.
JP-A-8-303077

Invention of prior application

  Japanese Patent Application No. 2004-326294

A first object of the present invention is to allow a projecting dead bolt to be forcibly brought into an unlocked state by an operation member such as a key in an abnormal state (for example, during a power failure).
The second purpose is to easily switch the engagement point of the drive arm when an operation member such as a key is operated at least in the operation of forced unlocking.

The third purpose is to smoothen the rotation of the engagement plate (clutch plate) and to reduce the manual operation force so that children and the elderly can easily unlock when an abnormality occurs. .
The fourth object is to facilitate the manufacture by reducing the number of components and not using a resin spring.
The fifth object is that the engagement plate (clutch plate) and the drive gear (clutch gear) can be easily combined.

The sixth object is that both magnetic bodies are always attracted to each other even when the magnetic body of the engagement plate (clutch plate) is separated from the magnetic body of the drive gear (clutch gear).
The seventh object is to obtain an electric lock using a magnetic signal of a clutch mechanism.

The clutch mechanism of the electric lock according to the present invention is provided with a drive motor that is driven by being controlled by a control unit, a gear transmission means that transmits the driving force of the drive motor to the dharma, and the gear transmission means and the dharma. And a clutch mechanism having a clutch plate capable of disconnecting the driving force of the dharma rotated by a manual operation force such as a clutch gear and a key to the drive motor, and the other end of the clutch plate of the clutch mechanism A clutch mechanism for an electric lock comprising a dead bolt that engages and moves back and forth by the driving force of the dharma rotating through a driving arm pivotally supported by the dharma. a first magnetic member provided on the wall surface, while the finger tip shape or the end of the plate portion together with the second magnetic body can adsorb with respect to the polarity of the first magnetic body is provided on the plate portion Combining said clutch plate having a Jo guide portion rotatably to the clutch gear, power failure, engaged portions of the engaging portion of the drive arm by the operating force is in a recess formed on one side surface of the clutch gear the moment away from the clutch plate, characterized by switching the engagement point of the driving arm is rotated to a position where the second magnetic body is adsorbed to the first magnetic body to the guide portion of the clutch plate And

The clutch mechanism of the electric lock according to the present invention is provided with a drive motor that is driven by being controlled by a control unit, a gear transmission means that transmits the driving force of the drive motor to the dharma, and the gear transmission means and the dharma. And a clutch mechanism having a clutch plate capable of disconnecting the driving force of the dharma rotated by a manual operation force such as a clutch gear and a key to the drive motor, and the other end of the clutch plate of the clutch mechanism Is a clutch mechanism of an electric lock having a dead bolt that moves forward and backward by the driving force of the dharma rotating through a driving arm pivotally supported by the dharma. a first magnetic member provided on the wall surface of the clutch gear having a shaft portion, whereas, the plate portion with the second magnetic body capable of adsorbing is provided in the plate portion with respect to the polarity of the first magnetic body Combining said clutch plate having a finger-like or claw-like guide portion at an end portion rotatably to the clutch gear, power failure, the engaging portion of the drive arm is formed on one side surface of the clutch gear by the operation force the moment away from the engaged portion of the recess, the clutch plate, the guide of the clutch plate engagement point of the driving arm is rotated to a position where the second magnetic body is adsorbed to the first magnetic body Switching to a part, the drive arm is guided to the path of the recess.

(1) The invention described in each of claims 1 and 4 is forcibly unlocking the protruding dead bolt by operating an operation member such as a key in an abnormal time (for example, during a power failure). Can be. Therefore, unlike Patent Document 1, there is no need to provide an external operation member for unlocking or an unlocking operation member whose outer end protrudes outside the lock box.
(2) Further, at least in the operation of forced unlocking, the engagement plate rotates to the required position by the attractive force of the magnetic body, so that the engagement point of the drive arm is easily switched. That is, the engagement point of the drive arm can be switched to the guide surface of the clutch plate. As a result, the drive arm can be smoothly guided to a required position (for example, the unlocking direction).
(3) Further, as in the prior invention, the engagement protrusion of the engagement plate (clutch plate) does not press against the inner peripheral wall of the recess of the drive gear (clutch gear), so that the engagement plate rotates smoothly, and as a result Thus, the manual operation force can be reduced.
(4) In addition, since the drive gear member (clutch gear member) constituting the clutch mechanism is “two articles” and the resin spring is not used for the engagement relationship (clutch relationship), manufacture is easy. .
(5) Even when the magnetic body of the other engagement plate (clutch plate) is separated from the magnetic body of the drive gear (clutch gear), both magnetic bodies are always attracted to each other. Therefore, the drive gear (clutch gear) and the engagement plate (clutch plate) can be rotated together.
(6) Moreover, the combination of each member and the incorporation into a lock box are very easy.

  First, the configuration and operation of the invention of the prior application (unpublished) shown in FIGS. 1 to 11 will be described.

(1) Environmental member The electric lock including the main part of the invention of the prior application (the present invention is also the same as described later) is “a drive motor 41 driven by the control unit 61 and driven by the dharma 21. Gear transmission means 42 for transmitting to the clutch, dead bolt 2 that moves forward and backward by the driving force of the dharma, and clutch means 51 that can cut the driving force of the dharma 21 that rotates by manual operation force such as a key lock with respect to the driving motor 42. , 52 ". First, the environmental member will be described.

  1 and 9, reference numeral 1 denotes a lock box, and 2 denotes a dead bolt that moves forward and backward by the driving force of the drive motor 41 with reference to the front 1c of the lock box 1. The dead bolt 2 includes a gear transmission means 42 that rotates by the driving force of the driving motor 41, a driving gear member 51 having a clutch function, a driving arm 55 that engages with the driving gear member 51, and a dharma that cooperates with the driving arm 55. 21. It moves forward and backward through the crank arm 8 connected to the dharma 21.

  An extraction port 62 for wiring is provided at a corner portion of the upper end portion of the lock box 1, and a connection portion (connection terminal) 64 on the printed circuit board 63 side is fitted into the extraction port 62. A connecting portion 65 of external wiring guided to the control room (not shown) is detachably connected to the connecting portion 64.

  In this embodiment, the space portion for disposing the drive gear member 51 between the rear end surface 5b of the guide member 5 and the rear wall 4 of the lock box 1 with reference to the guide member 5 for guiding the dead bolt 2. 40 is set. A lower space 59 for disposing the dharma 21 is set below the guide member 5. A remaining space 58 is set between the upper portion of the guide member 5 and the upper wall of the lock box 1.

(2) Invention of prior application-clutch mechanism
The feature of the prior invention is that the drive gear member (drive gear 52, engagement plate 53) 51 is first provided in the space portion 40 between the rear of the dead bolt 2 and the rear wall 4 of the lock box 1. is there. That is, a space portion 40 is provided between the rear end surface 14 of the dead bolt 2 or the rear end surface 5 b of the guide member 5 and the rear wall 4 of the lock box 1, and the space portion 40 is controlled by the driving force of the drive motor 41. The drive gear member 51 on the drive motor side that can be rotated in the forward and reverse directions via the gear transmission means 42 is disposed.

  Next, the drive gear member 51 is provided with a clutch function, and the unlocked state is forcibly unlocked by operating an operation member such as a key lock in the locked state or halfway protruding when an abnormality such as a power failure occurs. The idea is to make it possible.

  The clutch means 51 is incorporated in the drive gear 52 and a recess 52a of the drive gear 52 so as to form a “peel portion 57” that guides the engagement protrusion 56 of the drive arm 55, and in a normal state. The drive arm 55 and the drive gear 52 are combined with a non-circular engagement plate 53 that cooperates. The engagement plate 53 is integrally engaged with the drive gear 52 through an elastic engagement displacement portion 53a in a normal state.

  Thus, the clutch means 51 is provided with a recess in the drive gear 52 when a certain level of torque is applied to the engagement plate 53 via the drive arm 55 by a keying operation, particularly in an abnormal state. The elastic engagement displacement part 53a which can be displaced inside so that it may remove | deviate from the notch groove-like engaged part 52b of the inner peripheral wall of 52a is provided.

  Here, a specific configuration of the drive gear 52 and the engagement plate 53 will be described with reference to FIGS. 4 and 5.

  The drive gear 52 made of synthetic resin has a gear portion formed on the circumferential side, and has a through-hole for a shaft at the center thereof. The drive gear 52 is attached to a central shaft 54 that penetrates (freely inserts) the through hole. The recess 52a formed on the upper surface of one side is provided concentrically with the through hole.

  On the other hand, the engaging plate 53 made of synthetic resin is formed in a semicircular shape as a whole, and is incorporated into the recess 52a so that the central shaft 54 is loosely inserted into the cylindrical central portion thereof. As shown in FIG. 4, when the engagement plate 53 is incorporated in the recess 52a, the small protrusion-like engagement portion 53b of the elastic engagement displacement portion 53a of the engagement plate 53 is engaged with the engaged portion 52b of the drive gear 52. Therefore, the engagement plate 53 is united with the drive gear 52 (however, the engagement plate 53 can be independently rotated by friction).

  Thus, the engagement plate 53 has locking surfaces 53c and 53c that selectively engage with the engagement protrusions 56 of the drive arm 55 at both ends forming the “cutting portion 57”. Further, the engagement plate 53 has a semicircular portion that widens from the annular central portion, and a notch portion is formed concentrically with the through hole from the portion near the center of the semicircular portion to the other end portion. Yes. For this purpose, the elastic engagement displacement portion 53a of the engagement plate 53 is an arc-shaped portion having a narrow width in the circumferential direction that is connected to both end portions of the semicircular portion. A small protrusion-like engaging portion 53b that can be engaged and disengaged with one or a plurality of notched groove-like engaged portions 52b formed on the inner peripheral wall of the recess 52a of the drive gear 52 is formed at a substantially central portion of the arc-shaped portion. Yes. A magnet M3 is fixedly fitted to one wide end of the semicircular portion.

(3) Operation-Normal-Power cut during manual operation FIG. 1 is an explanatory diagram of a locked state, and FIG. 2 is an explanatory diagram of unlocking. When the dead bolt 2 protrudes at normal time, regardless of whether it is electric or manual, the dead bolt 2 can be unlocked. A detailed explanation of the normal operation and unlocking is omitted.

(4) Action-Abnormal-Forced Forced Power Cutting at Manual Time Manual forced power cutting at the time of abnormality will be described with reference to FIGS. This is a special effect of the invention of the prior application. This is the same with the present invention. Here, a representative example at the time of abnormality is “power failure” and the drive gear member 51 is not “origin position”.

  FIG. 3 is a schematic explanatory view in which the drive gear member 51 is stopped at the midway position. FIG. 4 is a schematic explanatory view when the engagement plate 53 is independently rotated from the midway position to the unlocked position separately from the stopped drive gear 52. FIG. 4 shows the relationship (engagement / disengagement relationship) between the engagement plate 53 of the drive gear member 51 and the engagement projection 56 of the drive arm.

  Since power can be supplied in a normal state, when the drive motor 41 controlled by the control unit 61 is activated in any direction of locking or unlocking, the driving gear member 51 is rotated 360 by the driving force of the driving motor 41. It can be rotated degrees.

  Suppose now that an emergency occurred and a “power failure” occurred while the drive motor 41 was being driven by the control of the control unit 61 (for example, each member was operating in the unlocking direction). Then, the drive gear 52 of the drive gear member 51 stops its rotation halfway and does not move unless the drive motor 41 is restarted. Therefore, when a required force is applied with an operation member such as a key and the dharma 21 is rotated in the unlocking direction, the engagement engagement portion 53 has an elastic engagement displacement portion 53a whose engagement portion 52b is in the recess 52a of the drive gear 52. Since it is displaced inward so as to deviate from the above, it rotates by friction alone as shown in FIG. At this time, the engagement portion 53 b of the elastic engagement displacement portion 53 is in sliding contact with the inner peripheral wall of the recess 52 a of the drive gear 52 while being in pressure contact.

(5) Power transmission mechanism controlled by control unit The power transmission mechanism controlled by the control unit includes a drive motor (for example, a micromotor) 41 controlled by the control unit 61, and a gear transmission unit that rotates by the driving force of the drive motor 41. 42, a drive gear member 51 that rotates in the forward and reverse directions by the transmission power of the gear transmission means 42, and when the drive gear member 51 rotates a predetermined amount, the engagement surfaces 53c, 53c of the engagement plate 53 of the drive gear member 51 and A driving arm 55 that moves in a predetermined direction via an engaging projection 56 that selectively engages with the locking surfaces 53c, 53c, a dharma 21 that is provided on the bearing 22 so as to cooperate with the driving arm 55; The crank arm 8 is connected to the dharma 21 and pushes out or pulls out the dead bolt 21. When the driving gear member 51 of the present embodiment rotates 360 degrees, for example, one locking surface 53c pulls the driving arm in the unlocking direction, while the other locking surface 53c pushes the driving arm in the locking direction. .

(6) Gear transmission means 42
6 and 7 show an example of the gear transmission means 42. FIG. The gear transmission means 42 exhibits its function when the dead bolt 2 is moved forward and backward by electric force. The gear transmission means 42 includes a plurality of transmission gears. 43 is a gear portion or first transmission gear provided on the output shaft of the drive motor 41, 44 is a second transmission gear meshing with the gear portion and the first transmission gear 43, and 45 is a first gear meshing with the second transmission gear 44. A third transmission gear 46 is a fourth transmission gear that meshes with the third transmission gear 45.

  By the way, the fourth transmission gear 46 has, for example, a shaft-like fitting portion 48 that fits into the center hole 47 of the second transmission gear 44, and meshes with the drive gear member 51 at the tip of the shaft-like fitting portion 48. A small-diameter gear portion 46a is formed. The large-diameter gear portion 46 b of the fourth transmission gear 46 meshes with the small-diameter side gear portion 45 b provided on the one side upper surface of the third transmission gear 45. The gear portion 45a on the large diameter side of the third transmission gear 45 meshes with the gear portion 44b on the small diameter side of the second transmission gear 44, and the gear portion 44a on the large diameter side is provided on the output shaft described above. Is engaged.

(7) Drive control unit Y
In the electric lock of the prior invention, a cassette case type drive control unit Y is detachably incorporated in the remaining space 58 communicating with the wiring outlet 62 of the lock box 1. The cassette case 39 of this drive control unit is formed in a flat container shape with a synthetic resin material, and when assembled in the lock box 1, it is regulated and supported in a sandwich shape on the opposing inner wall surfaces of the case body 1a and the case lid 1b. . In the drive control unit Y, a printed circuit board 63 having at least a control unit (microcomputer) 61 and a horizontal drive motor 41 controlled by the control unit 61 are disposed.

  The electric lock of the invention of the prior application is provided with a magnet M1 on the inner end side 2b of the dead bolt 2, and on the other hand, a locking (position) signal and an unlocking (position) signal corresponding to the position of the magnet M1, respectively. Non-contact type switches a and b that can be detected are individually disposed at a lower edge portion of the printed circuit board 63 at a predetermined interval.

  The front switch a near the front 1c is sensitive to the magnetic field of the magnet M1 facing the magnet M1 of the dead bolt 2 when the tip 2a of the dead bolt 2 is completely protruded from the lock box 1 during locking. This is a magnetic field sensitive switch. Therefore, the front switch a is a first switch for detecting a locking signal.

  On the other hand, the rear switch b provided at the center of the lower edge of the printed circuit board 63 is opposed to the magnet M1 when the dead bolt 2 is completely retracted into the lock box 1 when unlocked. This is a magnetic field sensitive switch that senses the magnetic field of M1. Accordingly, the rear switch b is a second switch for detecting the unlocking signal.

  These first and second switches a and b are so-called non-contact type switches and are turned on / off with respect to the strength of the magnetic field (S pole) of the magnet M1, so the “Hall IC principle” is used. Magnetic detection means.

  By the way, in the electric lock according to the invention of the prior application, not only the first and second switches a and b, but also this kind of magnetic detection means is further arranged on the printed board 63 as appropriate. As one of them, the front edge of the printed circuit board 63 is a non-contact type first that detects a closing signal corresponding to the position of the magnet M2 disposed on the door frame side (for example, the receiving metal fitting) 66 when the door is closed. Three switches c are provided.

  Further, behind the lower edge portion of the printed circuit board 63, the driving force of the dharma 21 can be cut with respect to the drive motor 41 in correspondence with the position of the magnet M3 provided on the engagement plate 53 of the drive gear member 51. A non-contact type fourth switch d for detecting a rotational position signal of the drive gear member 51 is provided. The magnet M3 and the fourth switch d always return the driving gear member 51 having a clutch function to a fixed position when the dead bolt 2 is moved forward and backward by the driving force of the driving motor 41, and “manual (key combination or thumb turn) ) "So that the Dharma 21 can be smoothly turned.

  Therefore, the control unit 61 in the cassette case 39 ensures that the drive gear member 51 of the clutch means always returns to the fixed position when the first and second switches a and b detect the locking signal or the unlocking signal, respectively. The drive motor 41 is controlled to rotate the drive gear member 51 clockwise or counterclockwise, for example, and when the fourth switch d detects the magnetic field of the magnet M3 of the drive gear member 51, the drive motor 41 rotates. Stop. Therefore, the time when the magnet M3 faces the fourth switch d is the “origin position of the drive gear member 51”. The magnets M1 to M3 are black in the drawing for convenience of explanation.

(8) Features of the guide member 5 In the electric lock of the prior invention, in order to effectively utilize the space portion 40 in the lock box 1, the rear end surface 5b of the guide member 5 for guiding the dead bolt 21 is formed in an arc shape. The drive gear member 51 is formed and can be sufficiently disposed.

(9) Other matters-Dead bolt 2 is a dead bolt that is slidably guided by a guide portion of a lock box or a guide portion 6 of a guide member 5 fixedly provided in the lock box. Then, it moves forward and backward (projects and retracts) slidably in the horizontal direction with reference to the front 1c. FIG. 1 shows a locked state in which the outer end side 2a of the dead bolt 2 protrudes from the front 1c, while FIG. 9 shows a state in an unlocked state in which the outer end side 2a retracts toward the front 1c. The end face shape of the deadbolt 2 is formed in a U-shape facing downward on the left side. At the time of locking, the tip side 3a of the cammaded 3 protrudes from the downward recess. As the dead bolt 2 moves forward and backward, the hooked tip 3 side protrudes from the outer end side 2 a of the dead bolt 2 or retreats into the outer end side 2 a.

(10) Guide part of the lock box or guide member The guide part of the lock box 1 or the guide part 6 of the guide member 5 fixedly provided in the lock box 1 guides the dead bolt 2 in a slidable manner. The guide member 5 is a single (for example, frame-shaped) support member made of metal or synthetic resin, or two guide plates.

  The guide member 5 is formed in, for example, a horizontally long plate body, and the distal end surface 5a thereof is disposed so as not to have a gap on the front 1c side or to have a slight gap. And the space part 40 which can arrange | position another member is set between the rear end surface 5b and the rear wall 4 of the case body 1a.

  Now, the main part of the guide member 5 will be described. Reference numeral 6 denotes one or a plurality of long hole guide portions formed in the guide member 5 in order to push out or pull back the dead bolt 2 through a plurality of movable pins. The long hole-shaped guide portion 6 includes a horizontal portion 6a and a step-shaped bent portion 6b communicating with the horizontal portion 6a.

  The long hole guide portion 6 is one engagement long hole for a total of two movable pins in which stepped bent portions 6b are formed in series on the horizontal portion 6a. The long hole guide portion 6 simultaneously guides the first movable dead pin 7 integral with the dead bolt 2 and the second movable movable pin 9 with the crank arm 8 when the dead bolt 2 moves forward and backward. .

  That is, as shown in FIG. 1, the dead bolt 2 has a dead pin movable pin 10 and a dead first movable pin 7, but both end portions of the latter dead first movable pin 7 are dead bolts 2. When the dead bolt 2 moves forward and backward, it protrudes from the circular through-holes 11 formed on both side walls and engages with the corresponding horizontal portions 6a of the guide members 5 and 5, respectively. 6a guides and slides.

  On the other hand, the second movable pin 9 provided laterally at one end of the crank arm 8 also protrudes from a circular through hole formed on each side wall of the portion corresponding to the middle between the one end 8a and the other end 8b, and Since the respective stepped bent portions 6b of the guide member 5 are engaged with each other, the dead bolt 2 is guided and slid by the stepped bent portion 6b when moving forward and backward. In this case, the second movable pin 9 draws an arc-shaped locus.

  By the way, the first movable pin 7 and the second movable pin 9 are positioned on the horizontal portion 6a of the guide member 5 at the time of locking shown in FIG. 1, and the rear second movable pin 9 is bent stepwise with the horizontal portion 6a. The vertical support surface 13 corresponding to the common surface of the portion 6b enters. The step-shaped bent portion 6b of the guide portion 6 of this embodiment is formed from the longitudinal support surface 13 toward the rear end surface 5b.

  Therefore, when the dead bolt 2 is completely projected at the time of locking, the second movable pin 9 of the crank arm 8 falls into the hook-shaped tip, and the second movable pin 9 is supported by the longitudinal support surface 13. (Restrained). At this time, the second movable pin 9 is sandwiched between the rear end surface 14 formed in the arc shape of the dead bolt 2 and the longitudinal support surface 13. Therefore, the dead bolt 2 cannot be retracted into the lock box 1.

  On the other hand, when the first movable pin 7 and the second movable pin 9 are unlocked, and the dead bolt 2 is completely retracted into the lock box 1, the first movable pin 7 located in front of the guide member 5 Whereas the second movable pin 9 on the rear side is positioned on the vertical support surface 13 of the horizontal portion 6a or the step-like bent portion 6b, the rear second movable pin 9 is connected to the rear end of the hook-like step-like bent portion 6b. Two movable pins 9 enter, and the second movable pins 9 are supported (restrained) by the arcuate locking surface 15 at the rear end. At this time, the second movable pin 9 looks slightly depressed on the arcuate locking surface 15 of the step-shaped bent portion 6b.

  Therefore, the dead bolt 2 does not easily protrude due to vibration or the like. As described above, the long hole guide portion 6 of the guide member 5 has a plurality of support surfaces or locking surfaces 13 and 15, and the second movable of the crank arm 8 both during locking and unlocking. The pin 9 is supported (restrained), and in the former case, the dead bolt 2 is prevented from moving back into the lock box 1, while in the latter case, the dead bolt 2 protrudes from the lock box 1. Is preventing.

(11) Dead Bolt 2 and Kama Dead 3
The deadbolt 2 is formed in an “end face downward U shape”. The dead bolt 2 is formed in a cavity due to the combination with the kama dead 3 and the crank arm 8, and for example, a notch is formed at an appropriate place. On the other hand, the kama dead 3 is formed in a bowl shape, and is provided to be rotatable by a predetermined amount via a dead kama movable pin 10, a kama long hole, and a kama shaft 16 on the front 1 c side of the lock box 1.

  By the way, this deadbolt 2 is considerably shorter (for example, about two-thirds in length) compared with the total length of the deadbolt generally used generally. Moreover, although the dead bolt 2 has the through-hole 11 for laterally arranging the 1st movable pin 7 for a dead in the inner end side 2b, it is the operation | movement extended in the radial outer direction of Dharma like before. It does not have slanting protrusions (c or inverted C-shaped engaging protrusions or engaging notch grooves) before and after the arm engages and disengages. Further, the rear end surface 14 of the inner end side 2b is formed in a curved shape so as to be smoothly supported by the second movable pin 9 of the crank arm 8.

(12) Dharma 21
As shown in FIG. 10, the dharma 21 is disposed on the bearing 22 of the lock box 1 so as to rotate by a predetermined amount by the rotation operation of the cylinder lock or thumb turn. The dharma 21 can be disposed in the central portion of the lock box 1, near the rear wall 4 or the like. However, considering one application (for example, an electric lock), the dharma 21 is closer to the rear wall 4 near the lower lock box. It is arranged at the site.

  The dharma 21 is characterized in that it does not have an operating arm in the radially outward direction with respect to the inverted reverse C-shaped protrusion or the notch groove as in the prior art, but the other end portion 8b of the crank arm 8 is connected via the pivot shaft 17. It has the 1st connection protrusion 23 for pivotally supporting. A long hole-shaped shaft hole 24 is formed at the distal end portion of the slightly wider first connection protrusion 23, and the other end portion 8 b of the crank arm 8 is connected to the dharma 21 via the shaft hole 24 and the pivot shaft 17. ing.

  In Dharma 21, the remaining connecting projections are also formed appropriately in the radial outward direction. That is, reference numeral 25 denotes a second connection protrusion that is connected to the first connection protrusion 23 so that a finger is opened. The second connection protrusion 25 corresponds to the position position (locking position and unlocking position) of the dharma 21. Thus, the biasing means 31 for switching and biasing in a predetermined direction is connected.

  By the way, the urging means 31 is disposed between the dead bolt 2 and the dharma 21 and includes a rod-shaped connecting rod 32 and an urging spring 33 wound around the connecting rod 32. One end of the connecting rod 32 is connected to the second connecting projection 25 of the dharma 21 via a connecting pin 34, and the other end is passed through a columnar guide means 35 fixed in the lock box 1. It is supported by.

  Further, reference numeral 26 denotes a third connection protrusion that protrudes in a fin shape in the opposite direction to the first connection protrusion 23 and the second connection protrusion 25, and the third connection protrusion 26 is formed in a stepped shape. One end of the drive arm 55 is pivotally attached to the third connection protrusion 26.

(13) Crank arm 8
As shown in FIG. 11, one end portion 8 a of the crank arm 8 is connected to the first dead movable pin 7 of the hollow deadbolt 2, and is connected to the first crank portion 8 provided at the intermediate portion of the crank arm 8. 2 The movable pin 9 is engaged with the guide portion 6 of the guide member 5, and the other end portion 8 b of the crank arm 8 is pivotally attached to the first connecting projection 23 projecting outward in the radial direction of the dharma 21.

  The crank arm 8 has a pair of L-shaped engaging pieces and a connecting plate that connects these engaging pieces. Although not related to the present invention, one or more engaging claws are formed at the end of the crank arm 8.

  Reference numeral 12 denotes a circular through hole through which the second movable pin 9 is formed at an intermediate portion between the one end 8a and the other end 8b. If this through hole 12 is used as a reference, a through hole 18 for the first movable pin 7 is provided at one end 8a corresponding to the front, and a connecting pin 34 for the biasing means 31 is provided at the other end 8b in the angular direction. Each through hole 19 is formed.

  Thus, one end portion 8a of the crank arm 8 is pivotally attached to the dead bolt 2 via the first movable pin 7 for dead, while the other end portion 8b is pivoted to the first connecting projection 23 of the dharma 21. It is pivotally attached in a connected state via. Then, the second crank movable pin 9 is guided to the step-shaped bent portion 6 b following the horizontal portion 6 a of the guide portion 6 of the guide member 5. The dead bolt 2 is pushed out or pulled back through the crank arm 8.

Invention of the present application

Next, the present invention (clutch mechanism and electric lock) shown in FIG. 12 to FIG. 20 will be described in detail with the same constituent parts as those of the invention of the prior application cited (not described). The invention of the present application is similar to the invention of the prior application, “ a drive motor controlled and driven by the control unit, a gear transmission means for transmitting the drive force of the drive motor to the dharma, and disposed between the gear transmission means and the dharma. And a clutch mechanism having a clutch plate capable of disconnecting the driving force of the dharma rotated by a manual operation force such as a clutch gear and a key to the drive motor, and the other end of the clutch plate of the clutch mechanism. This is a clutch mechanism of an electric lock provided with a dead bolt that engages with a part and a proximal end of which moves forward and backward by the driving force of the dharma rotating through a driving arm pivotally supported by the dharma .

  In describing the configuration of the present invention, the members corresponding to the drive gear member 51, the drive gear 52, and the engagement plate 53 of the prior invention are referred to as “clutch gear member 51A” so as not to confuse the terms. , “Clutch gear 52A” and “clutch plate 53A”. The same parts as those in the prior application invention are given the same reference numerals or the same reference numerals.

(1) General remarks First, FIG. 12 corresponds to FIG. 4, and FIG. 13 corresponds to FIG. FIG. 14 is a front view of the clutch gear, and FIG. 15 is a diagram in which the clutch gear 52A and the clutch plate 53A constituting the clutch gear member 51A are fitted to the central shaft 54 via the respective cylindrical shaft portions 71 and 72. FIG. 16 is an enlarged front view of the clutch plate 53A in a state in which the lower surface on one side of the clutch plate 53A is slidably combined with the upper surface on one side of 52A.

  In this embodiment, after the cylindrical shaft portion 72 of the clutch plate 53A is externally fitted to the cylindrical shaft portion 71 of the clutch gear 52A, the clutch gear member 51A is fitted to the central shaft 54 on the lock box 1 side in a penetrating state. Insert.

  The basic configuration will be described with reference to FIGS. First, the clutch gear 52A has a gear portion 70 on a peripheral wall, and a recess 52a is formed on an upper surface on one side (front side in FIG. 13). A cylindrical shaft portion 71 is provided at the center of the recess 52a so as to project a required amount from an upper surface (upper side in FIG. 15) 70a of the gear portion 70 that forms the recess 52a.

  In the vicinity of the outer peripheral surface of the cylindrical shaft portion 71, a first support portion 73 having an arc-shaped sliding contact surface 73a having a slight gap (a gap into which the shaft portion 72 of the clutch plate 53A enters) is provided. It has been. The first support 73 protrudes continuously from the inner surface of the bottom wall of the recess 52a, but its sliding contact surface 73a is slightly lower than one upper surface (circumferential surface) 70a of the gear portion 70 (FIG. 15). reference).

  In the present embodiment, a gap is formed in which the shaft portion 72 of the clutch plate 53A enters, and the sliding surface 73a is made slightly lower than the one side upper surface (circumferential surface) 70a of the gear portion 70, whereby the clutch plate 53A is The clutch gear member 51A is made compact by fitting it into the recess of the clutch gear 52A as much as possible.

  The position, shape, size, and the like of the first support portion 73 are appropriately determined in consideration of the track of the engagement projection 56 of the drive arm, the stop position of the clutch gear 52A is not always determined at the time of a power failure, and the like. Is provided.

  By the way, in this embodiment, a plurality of sliding contact surfaces 74a and 75a having the same function as the first support portion 73 have engaged portions or engaging portions for the engaging portion 56 of the driving arm 55 ( A total of 2) support portions 74 and 75 are provided. Here, with reference to FIG. 14, the protrusion formed continuously on the right side (one side) of the inner peripheral wall of the recess 52 a of the clutch gear 52 </ b> A is referred to as a “second support portion 74”, and the left side of the inner peripheral wall ( The protrusion formed continuously on the other side is referred to as a “third support portion 75”.

  Therefore, reference numeral 74a is a second sliding contact surface, and reference numeral 75a is a third sliding contact surface. The second support portion 74 and the third support portion 75 are connected to a part of the inner peripheral wall of the recess 52a and extend by a required amount in the circumferential direction of the inner peripheral wall. Desirably, the respective inner walls extending in the circumferential direction of the second support portion 74 and the third support portion 75 are formed in a curved shape so that the movement of the engagement protrusion 56 goes smoothly.

  Thus, since the support part in the recess 52a of the clutch gear 52A is a plurality of support parts spaced apart from each other at a predetermined place, the clutch plate 53A has the sliding contact surfaces 73a, 74a, 75a (total) It can be rotated in a state where it is joined to three places.

  Meanwhile, a curved engaged portion 76 is formed at one end portion (the upper end portion in FIG. 14) of the second support portion 74. The engaging projection 56 of the drive arm 55 can be engaged with and disengaged from the engaged portion 76. On the other hand, a curved engaged portion 77 is also formed at one end portion of the third support portion 75, and the engaging protrusion 56 of the drive arm 55 can be engaged with and disengaged from the engaged portion 77. One engaged portion 77 faces in the opposite direction with respect to the other engaged portion 76.

  Therefore, the engaged portions 75 and 76 of the support portions 74 and 75 can selectively engage with the engaging protrusions 56 of the drive arm 55 depending on the rotation direction of the clutch gear 52A. In other words, the engaged portion pushes up the engagement protrusion 56 or pushes down the engagement protrusion 56 depending on the rotation direction of the clutch gear 52 </ b> A.

  In addition, in the present embodiment, the first magnetic body 80 is fixedly provided at a central portion of the third support portion 75 or a portion near the central portion in the present embodiment. The first magnetic body 80 may be in any form (small cylindrical shape in the present embodiment), but is at least flush with the third sliding contact surface 75a so as not to hinder the rotation of the clutch plate 53A. It is.

  Next, the clutch plate 53A will be described. In the clutch plate 53A, the engaging portion (engagement protrusion in this embodiment) 56 of the second magnetic body 81 and the drive arm 55 that can be attracted in accordance with the polarity of the first magnetic body 80 goes to the path 78 of the recess 52a. It has one or a plurality of guide portions 83 for guiding, and is slidably fitted to the clutch gear 52A in a rotatable manner.

As shown in FIG. 16 (front view), the clutch plate 53 </ b> A is formed in a form that makes the image of a “ship shape of a ship” appear as a whole. Specifically, the clutch plate 53A includes a cylindrical shaft portion 72, a first protrusion 82 that extends in a radially outward direction from the central portion of the outer peripheral wall of the cylindrical shaft portion 72, and the first protrusion. arcuate plate extending as raised arms radially outwardly on an opposite side of the part 82 (second protrusion), made from the second magnet body 81. fixed radially to the arc-shaped plate portion, In this embodiment, the left and right end portions of the arc-shaped plate portion serve as guide portions 83 that can guide the engaging protrusions 56 of the drive hum 55.

  Thus, in this embodiment, the guide portion 83 is formed on the left and right sides in consideration of the right and left hand of the lock, and the guide surfaces 83a and 83a inside the left and right guide portions 83 are recessed in the clutch gear 52A. It extends in a fingertip shape or a nail shape with respect to the inner peripheral wall of the location 52a. In the present embodiment, the left and right guide surfaces 83a reach the inner peripheral wall of the recess 52a. Note that a slight gap may be set between the tip of the guide surface 83a and the inner peripheral wall within the range of feasibility.

  In the above configuration, the clutch plate 53A has an engaging portion (engagement protrusion) 56 of the drive arm 55 in the recess 52a of the clutch gear 52A by an operating force of an operating member (not shown), for example, in the event of a power failure. At the moment of separation from one engaged portion 76, the second magnetic body 81 rotates to a position where the second magnetic body 81 is attracted to the first magnetic body 80 of the stopped clutch gear 52A (here, the clutch plate 53A is in the attracted position). ), One guide surface 83a of the clutch plate 53A (the guide surface on the right side in FIG. 12) is “started (the toe of the guide portion 83a is the curved engagement of the engaged portion 76). This means that the engagement portion 56 of the drive arm 55 once separated is received earlier than the engaged portion 76 of the clutch gear 52A (engaged first). And engagement bumps Switching the 56 engagement points to one of the guide surface 83a.

  As a result, the clutch plate 53A rotates with an operating force while rotating (at this time, the driving arm, dharma, dead, etc. are moved in the unlocking direction), and the engagement protrusion 56 is moved to the path 78 of the recess 52b. invite. Here, the passage 78 of the recess 52b means, for example, a gap for engaging protrusion between the outer peripheral surface of the cylindrical shaft portion 71 and the arc-shaped inner peripheral surface of the second support portion.

  Here, a combination of the clutch gear 52A and the clutch plate 53A will be described. Since the clutch plate 53A of the present embodiment has the cylindrical shaft portion 72, first, the cylindrical shaft portion 72 is externally fitted to the cylindrical shaft portion 72 of the clutch plate 53A. Then, since the first magnetic body 80 and the second magnetic body 81 are attracted in accordance with the polarity, the clutch gear 52A and the clutch plate 53A are quickly integrated to form the “clutch gear member 51A”. Next, the clutch gear member 51A is fitted and inserted into the central shaft 54 on the lock box 1 side. Therefore, the combination of members or the incorporation into the lock box is very simple.

(2) Each theory Each theory explains the mode of operation relevant to the object of the present invention. That is, the description of the operation mode when applying / unlocking with the driving force of the drive motor is redundant, and is omitted. “Manual operation during power failure” will be described.

  First, FIG. 17 and FIG. 18 are explanatory diagrams when, for example, a “power failure” occurs when the driving force (electricity) of the driving motor 41 is moving from the locked state to the unlocked state.

  FIG. 17A shows a locked state. At this time, the magnetic bodies 80 and 81 of both members 52A and 53A of the clutch gear member 51A are at the origin position (see FIG. 1) and are attracted to each other.

  FIG. 17 (b) shows a position where electric unlocking has started. That is, the clutch gear 52A starts to rotate in the unlocking direction (clockwise in the drawing). At this stage, one engaged portion (the curved end surface of the third support portion) 77 of the clutch gear 52 </ b> A has not yet hit the engagement protrusion 56 of the drive arm 55.

  Therefore, actually, the members such as the drive arm, the dharma, and the crank do not operate in the unlocking direction. The clutch gear 52A is rotating clockwise together with the attracting clutch plate 53A, and the guide surface 83a of one guide portion 83 of the clutch plate 53A gradually approaches the engaging projection 56 of the drive arm 55. Yes.

  FIG. 17C is an explanatory diagram in which each member such as a drive arm actually starts unlocking by electric drive (the dharma, the crank, etc. are omitted). When the clutch gear 52A rotates clockwise together with the attracting clutch plate 53A, as described in the general remarks, one guide surface 83a (the right guide surface in the figure) of the clutch plate 53A is "running out" The clutch plate 53A first collides with the engagement protrusion 56 of the drive arm 55. At this time, for example, since the lock biasing means (click spring) 31 is strong, the drive arm 55 does not tilt inward.

  Therefore, the clutch plate 53A is slightly pushed up against the attractive force of the magnetic bodies 80 and 81. That is, the clutch plate 53A moves slightly in the counterclockwise direction, and the attracted state is released. On the other hand, since the clutch gear 52A continues to rotate electrically, the engagement protrusion 56 of the drive arm 55 is caught by the small recess-like engaged portion 77 of the clutch gear 52A. In this state, the drive arm 55 is lowered in the drawing.

FIG. 17 (d) is an explanatory diagram when a “power failure” occurs during electric unlocking. At this time, as a matter of course, the drive arm 55 also stops.
A case of manual operation (using a combined key) will be described with reference to FIG.

  Here, in the case of manual operation, there are two operation modes. One of them is a case where the drive key 55 is lowered by turning the key in the unlocking direction as it is. This is the state of FIG. Thereby, even at the time of a power failure, the drive arm 55 can be lowered as it is using the recess 52a of the clutch gear 52A.

  By the way, as shown in FIG. 18A, once manually rotated in the unlocking direction (clockwise), the drive arm 55 is separated from the clutch plate 53A, and as a result, the clutch plate 53A attracts the magnetic bodies 80 and 81. Return to the original position (suction position) by force. At this time, the drive arm 55 is in a “smooth state like drunkness” because there is no load.

  Then, it is another operation mode. This operation mode is a case where it is desired to return to the initial state shown in FIG. That is, it is a case where it wants to be in a locked state.

  FIG. 18B shows a place where the dharma 22 starts to be turned counterclockwise by manual operation. At the time of manual locking, the drive arm 55 is in a fluffy state, so it loses the attracting force of the magnetic bodies 80 and 81, and its engaging projection 56 is guided by one guide surface 83a of the clutch board 53A "leaving out" As shown by the arrow above, it falls slightly to the left.

  FIG. 18C is an explanatory diagram when the dharma 22 is further rotated in the locking direction. When the dharma 22 further rotates counterclockwise, the clutch plate 53A is pushed upward via the guide portion 83, and thus rotates counterclockwise via the shaft portions 71 and 72. At this time, the second magnetic body 81 of the clutch plate 53A is separated from the first magnetic body 80, and the engaging projection 56 of the drive arm 55 enters the path 78 through the recess.

  Therefore, at the time of a power failure, each member such as the drive arm and the dharma can be manually moved to either the “unlock position” or the “lock position”.

Next, FIG. 19 and FIG. 20 are explanatory diagrams when, for example, a “power failure” occurs when the drive motor 41 is moving from the unlocked state to the locked state by the driving force (electric). In addition, since an example of the operation | movement aspect of this invention was demonstrated in detail with reference to FIG.17 and FIG.18, the overlapping part is abbreviate | omitted FIG.19 (a) is an unlocked state. The magnetic bodies 80 and 81 are at the origin position (see FIG. 9) and are attracted to each other.

  FIG. 19B shows a place where locking is started electrically. The clutch gear 52A starts to rotate in the locking direction (counterclockwise in the drawing). At this stage, the other engaged portion (curved end surface of the second support portion) 76 of the clutch gear 52 </ b> A has not yet hit the engagement protrusion 56 of the drive arm 55. The guide surface 83a of the other guide portion 83 of the clutch plate 53A gradually approaches the engagement protrusion 56 of the drive arm 55.

  FIG. 19C is an explanatory diagram in which each member such as a drive arm actually starts unlocking by electric drive (the dharma, the crank, etc. are omitted). Since one guide surface 83a (right guide surface in the figure) of the clutch plate 53A "runs out", the clutch plate 53A first collides with the engagement protrusion 56 of the drive arm 55. As described above, Since the urging means 31 before the lock is strong, the drive arm 55 does not tilt inward. In the drawing, the clutch plate 53A is pushed down slightly against the attracting force of the magnetic bodies 80 and 81, and the attracted state is released. At this time, since the clutch gear 52 </ b> A continues to rotate electrically, the other engaged portion 76 of the clutch gear 52 </ b> A is engaged with the engagement protrusion 56 of the drive arm 55. In this state, the drive arm 55 moves up and down.

  FIG. 19 (d) is an explanatory diagram when a “power failure” occurs during electric locking. Even when a power failure occurs during locking, the drive arm 55 can be manually moved in the unlocking direction (downward direction in the drawing). In addition, when operating with a joint key, it can also operate in the locking direction as it is.

  Therefore, a mode in the case of unlocking by manual operation (using a combined key) will be described with reference to FIG.

  First, as shown in FIG. 20 (a), once it is manually turned slightly in the locking direction (counterclockwise), the engagement protrusion 56 of the drive arm 55 is separated from the engaged portion 76 of the clutch gear. As a result, the clutch plate 53A returns to the original position (attraction position) by the attraction force of the magnetic bodies 80 and 81.

  FIG. 20B shows a place where the dharma 22 has started to be turned clockwise by a manual operation. When manual unlocking is performed, the drive arm 55 is in a fluffy state, so it loses the attracting force of the magnetic bodies 80 and 81, and its engaging projection 56 is guided to one guide surface 83a of the clutch board 53A that is "leaving out" It falls on the left side of the drawing.

  FIG.20 (c) is explanatory drawing when the dharma 22 is rotating further in the unlocking direction. When the dharma 22 further rotates in the clockwise direction, the clutch plate 53A is pushed downward through the guide portion 83, and thus rotates in the clockwise direction through the shaft portions 71 and 72. At this time, the second magnetic body 81 of the clutch plate 53A is separated from the first magnetic body 80, and the engaging projection 56 of the drive arm 55 enters another path 78 of the recess. Therefore, at the time of a power failure, the members such as the drive arm and the dharma can be manually moved to the “unlocked position”.

  The clutch gear 52A of the embodiment has a cylindrical shaft portion 71 at the center, but the shaft portion 71 is not necessarily cylindrical. Of course, a rod-shaped shaft may be integrally provided in advance at the center of the clutch gear 52A.

  The recess 52a is formed on one side surface of the clutch gear 52A, and the clutch plate 53A is fitted in the recess 52a. However, the clutch plate 53A is not necessarily fitted in the recess 52a. Further, although the cylindrical shaft portion 72 of the clutch plate 53A is externally fitted to the shaft portion 71, it is not necessarily required to be externally fitted. Further, the number and shape of the support portions of the recess 52a can be arbitrarily changed. Naturally, for example, the design change of the engagement relationship between the engagement protrusion of the drive arm and the curved engaged portion of the clutch gear 52A does not affect the essential matters of the present invention (the same invention). .

  The present invention is mainly used in the locksmith and joinery industries.

1 to 11 are explanatory views showing the best embodiment of the invention of the prior application. FIG. 12 to FIG. 20 are explanatory views showing the best embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows one Example of prior application invention (at the time of electric or manual locking). Schematic explanatory diagram of the main part (when unlocking manually). Schematic explanatory drawing which shows the position of the drive gear at the time of a power failure. The schematic explanatory drawing at the time of a power failure when an engagement plate rotates independently to an unlocking position separately from the drive gear in a stopped state. The disassembled perspective view of a drive gear member. The schematic explanatory drawing from the perspective of a gear transmission mechanism. Schematic explanatory drawing of a gear transmission mechanism. Schematic explanatory drawing which shows principal parts, such as a control part and a switch. BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows one Example of this invention of a prior application invention (at the time of electric or manual unlocking). Illustration of Dharma. Explanatory drawing of a crank arm. Schematic explanatory drawing when the clutch plate (engagement plate) rotates independently to the unlocked position separately from the clutch gear (drive gear) in a stopped state during a power failure. The disassembled perspective view of a clutch gear member (drive gear member). The front view of a clutch gearwheel. The schematic cross-section explanatory drawing of the principal part. The front view of a clutch board. Schematic cross-sectional explanatory drawing of unlocking from a locked state (power failure during unlocking). FIG. 18 is a schematic cross-sectional explanatory diagram of manual operation based on FIG. 17. Schematic cross-sectional explanatory drawing of locking from a unlocked state (power failure during locking). FIG. 20 is a schematic cross-sectional explanatory diagram of manual operation based on FIG. 19.

51A ... clutch gear member (51: drive gear member), 52A ... clutch gear (52: drive gear), 52a ... recess, 53A ... clutch plate (53: engagement plate), 54 ... central axis, 55 ... drive arm, 56 ... engaging portion (engagement protrusion), 70 ... gear portion, 71 ... shaft portion of clutch gear, 72 ... shaft portion of clutch plate, 73 ... first support portion, 74 ... second support portion, 75 ... third Support part, 73a, 74a, 75a ... sliding contact surface, 76 ... engaged part of second support part, 77 ... engaged part of third support part, 80 ... first magnetic body on clutch gear side, 81 ... Second magnetic body on the clutch plate side, 83 ... guide portion, 83a ... guide surface, 42 ... gear transmission mechanism, 1 ... lock box, 2 ... dead bolt, 3 ... camaded, 8 ... crank arm, 21 ... dharma, 31 ... Energizing means.

Claims (6)

A drive motor controlled and driven by the control unit, a gear transmission means for transmitting the driving force of the drive motor to the dharma, and disposed between the gear transmission means and the dharma, as well as a clutch gear and a key lock, etc. A clutch mechanism having a clutch plate capable of disconnecting the driving force of the dharma rotated by a manual operation force with respect to the drive motor, the other end of the clutch plate of the clutch mechanism being engaged, and the base end being the A clutch mechanism of an electric lock provided with a dead bolt that moves forward and backward by the driving force of the dharma rotating through a driving arm pivotally supported by the dharma ,
A first magnetic body is provided on the wall surface of the clutch gear, while a second magnetic body that can be attracted to the polarity of the first magnetic body is provided on the plate portion, and a fingertip shape is provided at the end of the plate portion. or combining the clutch plate having a claw-shaped guiding portion rotatably to the clutch gear, power failure, the engageable in a recess engaging portion is formed on one side surface of the clutch gear of said drive arm by said operating force the moment away from the engaging portion, said clutch plate, to switch the engagement point of the driving arm is rotated to a position where the second magnetic body is adsorbed to the first magnetic body to the guide portion of the clutch plate An electric lock clutch mechanism. 2. The clutch mechanism for an electric lock according to claim 1, wherein the guide portions of the clutch plate are formed symmetrically. The clutch plate according to claim 1, wherein the clutch plate is fitted to the clutch gear so that one side surface thereof is slidably supported on a sliding surface of a support portion provided in a recess of the clutch gear. Electric lock clutch mechanism. A drive motor controlled and driven by the control unit, a gear transmission means for transmitting the driving force of the drive motor to the dharma, and disposed between the gear transmission means and the dharma, as well as a clutch gear and a key lock, etc. A clutch mechanism having a clutch plate capable of disconnecting the driving force of the dharma rotated by a manual operation force with respect to the drive motor, the other end of the clutch plate of the clutch mechanism being engaged, and the base end being the an electrical lock of the clutch mechanism is provided with a dead bolt to move forward and backward by a driving force of the dharma rotating through the driving arm which is pivotally supported by the Dharma, the wall surface of the clutch gear having a shaft portion at the center a first magnetic member provided, on the other hand, the fingertip-like or claw-like guide portion at an end portion of the plate portion together with the second magnetic body can adsorb with respect to the polarity of the first magnetic body is provided on the plate portion Combining said clutch plate rotatably to the clutch gear having a power failure, the moment the engaging portion of the drive arm by the operation force away from the engaged portion of the recess formed on one side surface of the clutch gear to the clutch plate, the second magnetic body engagement point of the driving arm is rotated to a position to adsorb said first magnetic body switched to guide part of the clutch plate, the drive arm said concave An electric lock clutch mechanism characterized by being guided to a certain passage. 5. The clutch mechanism for an electric lock according to claim 4 , wherein the shaft portion of the clutch plate is formed in a cylindrical shape, and the shaft portion is externally fitted to the shaft portion of the clutch gear. 5. The clutch gear according to claim 4 , wherein a plurality of support portions having a sliding contact surface and an engaged portion are provided apart from each other in the recess of the clutch gear, and the clutch plate rotates in a fitted state in the recess. An electric lock clutch mechanism characterized in that it is possible.

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