JP2008063726A - Clutch mechanism of electric lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate a combination of respective components by ensuring the relationship of engagement and disengagement of a clutch gear with/from an engaging claw piece, associated with a clutch plate, by a simple mechanism. <P>SOLUTION: In this clutch mechanism of an electric lock, a clutch member is combined with a recess of the clutch gear; one end portion of the engaging claw piece of the clutch member is journaled on the clutch plate via a linkage means; and the other end thereof is engaged with/disengaged from ratchet teeth which are formed in the recesses of the clutch gear. When the clutch gear is rotated in a predetermined direction by receiving a driving force from the side of a drive motor, the other end of the engaging pawl piece is engaged with the ratchet teeth, so that the clutch plate can be rotated in cooperation with the clutch teeth. When an operating physical force from the side of a potbellied portion is transmitted to the clutch plate via a driving arm, the other end of the engaging pawl piece is not meshed with the ratchet teeth, and the clutch plate is rotated by at least a required amount. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a clutch mechanism for an electric lock.

  Patent Document 1 discloses “an electric clutch mechanism including a driving gear (clutch gear) and an engagement plate (clutch plate) incorporated in a recess of the driving gear”. This patent document 1 has been proposed by the applicant.

  By the way, the engagement relationship between the clutch gear described in Patent Document 1 and the engagement plate (clutch plate) incorporated in the recess of the clutch gear is the relationship between the engaged portion (notch portion) in the recess and the engagement plate. Due to the relationship with the engagement protrusion of the elastic engagement displacement portion (resin spring portion), 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 lock, etc. 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.

Thus, there is a demand for the appearance of a novel clutch mechanism that improves the problems of Patent Document 1 (the published invention of the prior application).
JP 2006-138072 A

  The intended object of the present invention is to ensure the engagement and disengagement relationship between the clutch gear and the engagement claw piece linked to the clutch plate by a simple mechanism. The second object is that the clutch member can be easily combined with the clutch gear. A third object is that when the clutch gear rotates in one direction, the clutch plate also rotates in the same direction, whereby the engagement protrusion of the drive arm can repeat a circular trajectory. In other words, the locking and unlocking of the electric lock can be repeated by rotating the clutch gear and the clutch plate in the same direction. The third object is not to concentrate the load on one engaging claw piece that engages with the clutch gear. Other purposes can be objectively specified by the description of the specification.

  The clutch mechanism of the electric lock according to the present invention is a clutch mechanism of an electric lock having a clutch gear that transmits a driving force of a drive motor controlled by a control unit to a dharma side. A clutch member in which the plate, the engaging claw piece, and the catch plate for the engaging claw piece are integrated into a unit is combined, and one end of the engaging claw piece is pivotally supported by the clutch plate via the linkage means, The other end is engaged with and disengaged from the ratchet teeth formed in the recess of the clutch gear, and when the clutch gear receives a driving force from the drive motor side and rotates in a predetermined direction, the other end of the engagement claw piece becomes a ratchet tooth. By engaging, the clutch plate rotates together with the clutch gear. On the other hand, when the operating force from the dharma side is transmitted to the clutch plate via the drive arm, the other end of the engaging claw piece is moved to the ratchet teeth. Do not mesh, Ji plate, characterized by rotating at least the required amount.

(A) Since it is a combination of a clutch gear (internal toothed wheel) and a clutch plate provided with an engaging claw piece that engages with and disengages from a ratchet tooth (internal tooth) of the clutch gear, the clutch gear and the clutch plate are separated by a simple mechanism. The engagement and disengagement relationship with the engaging claw piece linked with the can be ensured. Therefore, the problem of patent document 1 can be solved.
(B) The clutch plate constituting the clutch member, the engaging claw piece, and the catch plate for the engaging claw piece are unitized in advance, and the clutch member is combined with the clutch gear in that state, so the combination is very simple. is there.
(C) In the invention according to claim 2, the catching plate for the engaging claw pieces can have a function of catching or urging. Therefore, the effects of the previous items (a) and (b) can be obtained with certainty.
(D) When the clutch gear rotates in one direction, the clutch plate also rotates in the same direction, so that the engagement projection of the drive arm can repeat a circular trajectory. In addition, the locking and unlocking of the electric lock can be repeated by rotating the clutch gear and the clutch plate in the same direction.
(E) The clutch gear is formed with a plurality of internal teeth, while the engaging claw pieces engaged with and disengaged from the internal teeth are loaded with one engaging claw piece engaged with the clutch gear. Can not concentrate.

(1) Main components of the electric lock X First, the configuration and operation of one embodiment of the present invention shown in FIGS. 1 to 12 will be described. The electric lock X of the present invention shown in FIGS. 1 and 2 includes a control unit 1 that is electrically connected to a signal detection means (not shown), a drive motor 2, a gear transmission means 3, a clutch mechanism Y, and a clutch that constitutes the clutch mechanism Y. Gear 11, clutch plate 21, engagement claw piece 26 and engagement claw piece capture plate 29, drive arm 4 engaged with the clutch plate 21, dharma 5 linked to the drive arm, and crank arm 6 linked to the dharma A dead bolt 7 and the like that move forward and backward through the crank arm 6 are provided.

  The drive motor 2 is driven by being controlled (applying / unlocking voltage application) by the control unit 1, and the driving force of the drive motor 2 is transmitted to the Dharma 5 through the gear transmission means 3, the clutch mechanism Y and the drive arm 4. .

  On the other hand, the clutch mechanism Y uses the driving force of the dharma 5 that is rotated by the operating force of an operating member (for example, a key) (not shown), for example, via the rotation (for example, idling) of the clutch plate 21 to the clutch gear 11 (drive motor 2). Can be cut.

  Specifically, for example, even when the key is repeatedly operated from locking to unlocking and from unlocking to locking in the normal time, the clutch plate 21 is circulated in the direction of idling by the guide mechanism for the drive arm. Therefore, the clutch gear 11 is not affected at all by the operating force of the operating member.

  In addition, even if the operation is switched from electric to manual operation and the operation member is repeatedly applied and unlocked, the engaging claw piece 26 does not mesh with the ratchet teeth 16 of the clutch gear 11 and the clutch plate 21 continues to idle in the same direction. . At this time, since the drive arm 4 repeats reciprocating motion, the electric lock can be repeatedly locked and unlocked via the dharma 5 interlocked with the drive arm 4.

(2) Clutch mechanism Y
First, as shown in FIG. 3, the clutch mechanism Y of the present invention includes a clutch gear 11 and a clutch member (a clutch plate 21 and a plurality of engagement claw pieces 26, which are integrated into a plurality of parts). It consists of a combination with the catch plate 29) 20 for the nail pieces.

  FIG. 3 shows the back side of the clutch member 20 taken out from the annular recess 15 of the clutch gear 11 of the clutch mechanism Y and reversed. As is apparent from FIG. 3, an annular recess 15 is formed on one side upper surface of the clutch gear 11 having the gear portion 12 and the cylindrical central shaft portion (shaft hole) 13, and the inner periphery of the annular recess 15 A plurality of ratchet teeth (inner teeth) 16 are formed on the surface with a predetermined interval.

  On the other hand, the unitized clutch member 20 is positioned on the clutch plate 21 located on the upper side of the drawing, a total of three engaging claw pieces 26 provided on the support shafts of the clutch plate 21, and on the front side of the drawing. The catching plate 29 for the engaging claw piece includes a fitting portion that fits at least the central portion of the clutch plate 21, and one end of the engaging claw piece that is continuous with the fitting portion. A support portion that captures the portion (base end portion) in a surface contact state, and a plurality of springs that press against the one end portion of the engaging claw piece and bias the engaging claw piece in a direction to engage with the ratchet teeth 16 Each has a portion 32.

  FIG. 2 shows a state in which the clutch member 20 is combined with the clutch gear 11 via the clutch shaft 10 such that each engagement claw piece 26 is positioned in the annular recess 15 of the clutch gear 11 (see FIG. 1). 4 shows a rear view (a), a schematic cross-section (b), and a front view (c) of the clutch plate 21. FIG. 5 shows a rear view (a) and a front view (b) of the engaging claw piece 26 together with the spring portion of the catch plate 29. Further, FIG. 6 shows a rear view (a) and a side view (b) of the capture plate 29.

  Next, the clutch mechanism Y is provided in a space portion between the rear side of the dead bolt 7 and the rear wall 9 of the lock box, and the clutch gear 11 and the clutch member 20 having the shaft holes are horizontally mounted on the lock box. The clutch shaft 10 is rotatably provided.

  With reference to FIG. 1, a gear 2 b provided on the output shaft 2 a of the lateral drive motor 2 is located above the clutch gear 11. On the other hand, below the clutch gear 11, the dharma 5 is rotatably positioned via an unnumbered support seat.

  Further, the drive arm 4 is disposed in the vertical direction on the right side of the dharma 5. The upper end portion of the drive arm 4 is positioned in the recessed state of the clutch gear 11, and its engagement projection is engaged with and disengaged from the second engagement portion formed in a projection shape on the other side surface of the clutch plate 21. . On the other hand, the lower end of the drive arm 4 is pivotally attached to the dharma 5.

(3) Clutch gear 11
First, a specific configuration of the clutch gear 11 will be described. 12 is a gear portion that meshes with the final gear of the gear transmission means 3, 13 is a cylindrical central shaft portion through which the clutch shaft 10 penetrates (free insertion), 14 is a shaft hole of the cylindrical central shaft portion, and 15 is formed on one side surface. The annular recess 16 is a plurality of ratchet teeth formed on the inner peripheral surface of the annular recess 15.

  In addition, the clutch gear 11 made of synthetic resin has a circular cylindrical central shaft portion 13 having a through hole (shaft hole) 14 at the center portion thereof with a gear portion 12 formed on the outer periphery of the peripheral side portion. Is formed. Desirably, since the clutch plate 21 of the clutch member 20 is fitted in the recess side, the protruding amount of the central shaft portion 13 protruding from the bottom surface of the inner wall of the annular recess 15 is set appropriately. It is slightly lower than one side surface (circumferential surface) of the gear 11. Further, as shown in FIG. 3, a plurality of (for example, three) ratchet teeth 16 are formed at a predetermined interval in the circumferential direction. Further, the clutch gear 11 is rotatably provided on the clutch shaft 10 that passes through the shaft hole 14.

(4) Clutch plate 21 of clutch member 20
In FIG. 1, for the sake of convenience, the circular clutch plate 21 that is visible in the foreground is separated (disassembled) to the right side, and a plurality of engagement claw pieces 26 and these engagement claw pieces 26 are respectively placed in the recesses of the clutch gear 11. The spring part of the capture plate 29 urged in the engagement direction is shown. 4 (a) is a rear view of the clutch plate 21, FIG. 4 (b) is a schematic cross-section of the clutch plate 21, and FIG. 4 (c) is a front view of the clutch plate 21. . Here, the configuration of the clutch plate 21 of the clutch member 20 will be described with reference to FIG.

  The clutch plate 21 is formed as a disc, and the outer diameter thereof is appropriately set in consideration of the inner diameter of the annular recess 15. The clutch plate 21 of the present embodiment is formed in a size that fits into the annular recess 15 of the clutch gear 11.

  The clutch plate 21 has a plurality of first engaging portions 22 that engage with the respective engaging claw pieces 26 on the back surface thereof, and engages with the drive arm 4 at a part of the peripheral end portion on the front surface. A projecting second engaging portion 23 is provided.

  Thus, for example, the first engagement portion 22 is a projection shaft that penetrates one end portion (base end portion) of the engagement claw piece 26 and engages with the circular support hole 31a of the support portion of the capture plate 29, for example. There are three with a predetermined interval in the circumferential direction. On the other hand, the second engaging portion 23 has a ginkgo leaf shape having curved engaging surfaces 23a and 23b that are symmetrical with respect to the center hole 24 for the clutch shaft 10.

  Furthermore, the clutch plate 21 of the present embodiment is provided with a cylindrical fitting protrusion 25 at the center of the back surface, and the outer peripheral surface 25a of the fitting protrusion 25 is formed in a non-circular shape (for example, a polygonal shape).

(5) Engaging claw piece 26 of clutch member 20
As described above, FIG. 5A shows a rear view of the engaging claw piece 26 and FIG. 5B shows a front view of the engaging claw piece 26 together with the spring portion 32 of the catch plate 29. The three engaging claw pieces 26 have the same configuration, and will be described with reference to FIG.

  The engagement claw piece 26 is formed in an arc shape and a fingertip shape, and a shaft hole 27 as an engaged portion that engages with the first engagement portion 22 (projection shaft) of the clutch plate 21 at one end portion (base end portion). On the other hand, an engaging claw 28 that can be engaged with and disengaged from the ratchet teeth 16 of the clutch gear 11 is formed at the other end portion (tip portion). Further, in the present embodiment, a notch portion 26a is formed on the back surface of the one end portion so that the support portion of the capture plate 29 is loosely fitted in a surface contact state. Therefore, the other end portion side of the engagement claw piece 26 having the engagement claw 28 is thick, whereas the back surface of the one end portion having the shaft hole 27 has a stepped uneven shape. The tip end surface of the spring portion 32 of the catch plate 29 is pressed against the side surface of one end of the engaging claw piece 26 as shown in FIG. 5, so that when the components are combined, the other end is in the direction indicated by the arrow. Be energized.

(6) Engagement claw catch plate 29
6A shows a rear view of the capture plate 29, and FIG. 6B shows a right side view of the capture plate 29 with reference to FIG. 6A.

  As described above, the capture plate 29 includes at least the plate-like fitting portion 30 that is fitted to the cylindrical fitting protrusion 25 at the center of the clutch plate 21, and the engagement claw that is continuous with the fitting portion 30. A projecting support portion 31 that captures one end portion (base end portion) of the piece 26 in a surface contact state, and extends from the fitting portion 30 toward the projecting support portion 31. Each has a plurality of plate-like spring portions 32 that press against one end portion and urge the engaging claw pieces in a direction to engage the ratchet teeth 16.

  Thus, the plate-like fitting portion 30 has a non-circular fitting hole 30a, protrudes in a fingertip shape radially outward, and has a plurality of contact portions 30b in surface contact with the back surface of the clutch plate 21. Have. Further, the protruding support portion 31 is appropriately bent from the peripheral end portion of the plate-like fitting portion 30 and loosely fitted in a surface contact state to the notch portion 26a of the engaging claw piece 26 described above. Moreover, the projecting support portion 31 has a shaft hole (engagement claw piece catching hole) 31a with which the first engagement portion 22 (projection shaft) of the clutch plate 21 is engaged.

(7) Other configuration and action First, the dharma 5 provided with the sickle piece has a plurality of connecting projections in the radially outward direction. One of them is connected to a dharma urging means 8 for switching and urging in a predetermined direction corresponding to the position position (locking position and unlocking position). The dharma urging means 8 includes an unnumbered bar-shaped connecting rod and an urging spring wound around the connecting rod.

  Next, one end portion 6 a of the crank arm 6 is connected to the first dead movable pin 45 of the hollow dead bolt 7, and the second crank movable pin 46 provided in the intermediate portion of the crank arm 6 is For example, the other end portion 6 b of the crank arm 6 is engaged with the guide portion of the crank arm guide member, and is pivotally attached to the first connecting protrusion that protrudes outward in the radial direction of the dharma 5.

(8) Configuration and Action of Clutch Mechanism Y A plurality of engaging claw pieces 26 unitized between the clutch plate 21 and the catch plate 29 are provided in the annular recess 15 of the clutch gear 11 as shown in FIG. It is incorporated. Moreover, one end portion of the engaging claw piece 26 is pivotally supported by the clutch plate 21 via the linkage means (22, 31a), and the other end portion is a ratchet tooth formed in the annular recess 15 of the clutch gear 11. 16 can be engaged and disengaged.

  Thus, as shown in FIG. 8, when the driving force is transmitted from the drive motor 2 side to the gear portion 12 of the clutch gear 11, the clutch gear 11 rotates in a predetermined direction indicated by an arrow A. Then, at the time of engagement, each engaging claw piece 26 opens radially outward like a petal with the projecting shaft 22 of the clutch plate 21 as a fulcrum by the spring force of the biasing means 32 of the capture plate 29, and each other end. The engaging claws 28 of the portions are simultaneously engaged with the ratchet teeth 16 respectively. Therefore, the clutch plate 21 can rotate together with the clutch gear 11.

(9) Engagement / Unlocking by Driving Force of Drive Motor The control unit 1 of this embodiment controls the drive motor 2 so that the clutch gear 11 repeats rotation in one direction. For example, as shown in FIG. 9, when the clutch gear 11 rotates in one direction indicated by an arrow A, the clutch plate 21 also rotates in the same direction A, whereby the drive arm 4 repeats reciprocating motion in the arrow B direction. At this time, the engagement protrusion 4a of the drive arm 4 draws a fixed trajectory as will be described later.

  FIG. 10 schematically shows movements of the clutch gear 11, the clutch plate 21, the drive arm 4, the dharma 5, and the crank arm 6 due to the driving force of the drive motor 2. FIG. 11 is a conceptual diagram showing the locus of the engaging protrusion 4a of the drive arm 4 guided by the guide mechanism (reference numeral 33 in FIG. 7). The engagement protrusion 4a of the drive arm 4 is guided by a known or new guide mechanism 33 (this embodiment) provided in the lock box, and preferably rotates cyclically while drawing an elliptical locus.

  Here, an example of the locus of the engaging protrusion 4a will be described with reference to FIG. At the time of unlocking (when the dead bolt is retracted), the engagement protrusion 4a of the drive arm 4 is at a position a below the guide track (for example, an annular groove), for example.

  Therefore, if a voltage for locking is applied to the driving motor 2 from the control unit 1 that has acquired the locking signal, the driving motor 2 is activated and the driving force is transmitted to the gear transmission means 3. The transmission power of the gear transmission means 3 is transmitted to the clutch gear 11 of the clutch mechanism Y. When the clutch gear 11 rotates in the direction of arrow A shown in FIG. 10, the clutch member 20 rotates together with the clutch gear 11 as described above, so that the engagement protrusion 4 a of the drive arm 4 is the second of the crank plate 21. It moves to the upper position b, drawing the arc-shaped track | orbit by being pressed by the engaging part 23. FIG. In this embodiment, when locking (when the dead bolt protrudes), the engaging protrusion 4a is at a point b opposite to the point a.

  Next, when the unlocking voltage is applied to the drive motor 2 from the controller 1 that has acquired the unlock signal, the drive motor 2 is restarted, and the driving force is the gear transmission means 3 as described above. To be told. At this time, the clutch gear 11 rotates in the same direction (arrow A) as in the case of locking, and the clutch plate 21 also rotates in the same direction A. In other words, the engagement protrusion 4a returns from point b to point a while drawing an arcuate trajectory on the opposite side. Therefore, when the locking and unlocking are repeated, the engagement protrusion 4a is cyclically guided by the guide mechanism 33, and the drive arm 4 repeats the reciprocating motion in the vertical direction.

  The engaging protrusion 4a of this embodiment protrudes inward and outward of the upper end portion of the drive arm 4, and its inner protruding portion engages with the protruding second engaging portion 23 of the crank plate 21, whereas the outer protruding portion. The guide bar 33 is guided by a raceway plate 34 constituting a guide mechanism 33 in the lock box and a pair of left and right position displacement guide bars 35 disposed opposite to the raceway plate. The guide bar is, for example, a spring of the material itself. It is possible to displace outwardly using the force, the connecting spring member 36 and the like (see FIG. 11).

(10) Applying / Unlocking with Manual Operating Force As shown in FIG. 12, the manual operating force is applied to the second engaging portion 23 of the clutch plate 21 from the Dharma 5 side through the engaging projection 4a of the drive arm 4. Then, when the clutch plate 21 rotates alone in a predetermined direction, the arcuate outer peripheral surface of the engagement claw piece 26 slides on the arcuate inner peripheral surface of the ratchet teeth 16, so that each engagement claw piece 26 is energized. It is displaced against the spring force of the means 32 so that it protrudes inward with the projection shaft 22 as a fulcrum.

  Therefore, the engagement claw 28 at the other end of each engagement claw piece 26 does not mesh with the ratchet teeth 16, and the clutch plate 21 rotates at least by a required amount. In this embodiment, the engagement protrusion 4a of the drive arm 4 is guided by the guide mechanism 33 having an elliptical orbit, so that the rotation is constant and cyclic as in the case of application / unlocking by the drive force of the drive motor. The trajectory is moved (similar to FIG. 10).

  The engaging claw piece 26 of the embodiment engages with the ratchet teeth via the urging means 32 of the catch plate 29, but a suction means may be used instead of the urging means 32. FIGS. 13A and 13B are examples of the suction means 29A. For convenience of explanation, the suction means 29A is provided at the engaging claw portion of one engaging claw piece 26 and the engaging surface portion of one ratchet tooth 16, but the other engaging claw pieces 26 and ratchet teeth are provided. The same applies to 16. The attracting means 29A is fixed (embedded or the like) to the first magnet 29a fixed to the engaging claw piece 26 and the ratchet teeth 16 or the clutch gear 11 at an appropriate position, and has the polarity of the first magnet 29a. The engaging claw piece 26 itself may have a magnetic function (commonly referred to as “plamag”).

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

1 to 12 are each explanatory views showing the best embodiment of the present invention. FIGS. 12A and 12B are schematic explanatory views showing a design change example of the main part of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows the environment and principal part of 1st Example. Schematic explanatory drawing of main parts (clutch plate). Explanatory drawing of the clutch member unitized with the clutch gearwheel. 4A is a rear view of the clutch plate, FIG. 4B is a schematic cross section of the clutch plate, and FIG. 4C is a front view of the clutch plate. 5A is a schematic explanatory view showing a rear view of the engaging claw piece, and FIG. 5B is a schematic explanatory view showing a front view of the engaging claw piece together with a spring portion of the catch plate 29. 6A is a rear view of the capture plate, and FIG. 6B is a right view of the capture plate with reference to FIG. Schematic cross-sectional explanatory diagram of the state where the main parts are combined The schematic explanatory drawing which shows the engagement state of an engaging claw piece when a clutch gearwheel rotates to one direction with the drive force of a drive motor. FIG. 9 is a schematic explanatory view showing the rotation direction of the clutch gear and the clutch plate in the case of FIG. 8. FIG. 9 is a schematic explanatory diagram showing the movement of a drive arm, dharma, etc. in the case of FIG. 8. The conceptual diagram which shows the track | orbit (trajectory) of the engagement protrusion of a drive arm when the application / unlocking is repeated in the case of FIG. The schematic explanatory drawing in case a clutch board rotates independently to a predetermined direction based on manual operation force. (A) and (b) of FIG. 13 are each schematic explanatory drawing which shows the example of a design change of the principal part (engagement means for engaging claw pieces), (a) is that the engaging claw pieces spread in the radial direction. Indicates the state. (B) is the opposite.

Explanation of symbols

X ... electric lock, Y ... clutch mechanism, 1 ... control unit, 2 ... drive motor, 3 ... gear transmission means, 4 ... drive arm, 4a ... engagement protrusion of the drive arm, 5 ... dharma, 6 ... crank arm, 7 DESCRIPTION OF SYMBOLS ... Dead bolt, 8 ... Dharma urging means, 10 ... Clutch shaft, 11 ... Clutch gear, 12 ... Gear portion, 13 ... Center shaft portion, 14 ... Through hole (shaft hole), 15 ... Annular recess, 16 ... Ratchet teeth, 20 ... clutch member, 21 ... clutch plate, 22 ... first engagement portion, 23 ... second engagement portion, 24 ... center hole, 25 ... cylindrical fitting projection, 26 ... engagement claw piece, 27 ... projection shaft, 28 ... engagement claw, 29 ... catch plate for engagement claw piece, 29A ... adsorption means, 30 ... fitting part, 31 ... support part, 32 ... biasing means (spring part), 33 ... engagement Protrusion guide mechanism.

Claims (6)

In an electric lock clutch mechanism having a clutch gear for transmitting a driving force of a drive motor controlled by a control unit to a dharma side, a clutch plate, an engaging claw piece, and an engaging claw with respect to a recess of the clutch gear. Combined with a clutch member that is unitized with the catch plate for one piece, one end of the engaging claw piece is pivotally supported by the clutch plate via a linkage means, and the other end is in the recess of the clutch gear. When the clutch gear is engaged with and disengaged from the formed ratchet teeth, and the clutch gear receives a driving force from the drive motor side and rotates in a predetermined direction, the other end portion of the engaging claw piece engages with the ratchet teeth, so that the clutch plate becomes the clutch gear. On the other hand, when the operating force from the Dharma side is transmitted to the clutch plate via the drive arm, the other end of the engaging claw piece does not mesh with the ratchet teeth, and the clutch plate has at least the required amount. Rotate Electric lock of the clutch mechanism, characterized in that. The engagement claw piece capture plate according to claim 1, wherein the engagement claw piece capture plate is fitted to the clutch plate, the support portion is connected to the engagement portion and captures one end portion of the engagement claw piece,
A clutch mechanism for an electric lock, characterized by having urging means for urging the engaging claw pieces in a direction to engage with ratchet teeth. 2. The electric lock clutch mechanism according to claim 1, wherein the control unit controls the drive motor so that the clutch gear repeatedly rotates in one direction. In claim 1, when the clutch gear rotates in one direction, the clutch plate also rotates in the same direction, whereby the engagement protrusion of the drive arm repeats a circular trajectory by the guide mechanism including the race plate. An electric lock clutch mechanism. 2. The ratchet teeth according to claim 1, wherein a plurality of ratchet teeth are formed on the inner peripheral surface of the recess with a predetermined interval, while the engaging claw piece is a linkage including a first engaging portion on a disc-shaped ratchet plate. A clutch mechanism for an electric lock, wherein a plurality of shafts are pivotally supported via the means. 2. The clutch plate according to claim 1, wherein the clutch plate has a first engagement portion that engages with the engagement claw piece on one side surface, and a second engagement portion that engages with the drive arm on the other side surface. An electric lock clutch mechanism characterized by comprising:

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