Click mechanism for electric lock and electric lock

Abstract

To enable power saving, improve durability of a motor or a machine, and improve quietness.SOLUTION: In a click mechanism for an electric lock, a click piece that operates against a spring force of energization means when a manually-operated side drive part is being driven and a click arm that operates without being substantially affected by the spring force of the energization means when an electrically-operated side drive part is being driven are incorporated within a lock box. The click arm is a cam part having a cam face formed on the inner peripheral surface. The cam face engages with an interlocking protrusion provided in a power transmission part of the electrically-operated side drive part incorporated within the lock box.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a click mechanism for an electric lock that can be locked and unlocked mechanically and electrically, and to an electric lock including the click mechanism. [Background technology]

[0002] <Click sensation when manually operated> As for a mechanically lockable / unlockable lock that gives the impression of a clicking sensation (vibration sound) caused by a manual operation of a key or thumb turn knob, there are embodiments described in Patent Document 1 (JP Patent Publication No. 2006-125058), Patent Document 2 (JP Patent Publication No. 2002-250160), and Patent Document 3 (Japanese Utility Model Application Publication No. 50-35694). Briefly described here, Patent Document 1 describes a manually operated clicking mechanism in the urging means 31, Figs. 1, 8, and 9. Patent Document 2 also describes the daruma drive spring 40, paragraph 0012, Figs. 1, 7, etc. Furthermore, in Patent Document 3, when the rod 14 exceeds the dead point, it is displaced by the elastic force of the spring 19, and the deadbolt 7 is pressed down so as not to swing. In this way, when locking or unlocking by manual operation, a "click feeling (the generation of a vibration sound)" is required so that the operator can feel certain that the deadbolt 7 has been completely extended or retracted when the deadbolt 7 has finished rotating (when locking or unlocking).

[0003] <In the case of electronic locks> In electric locks, Patent Document 4 (JP Patent Publication No. 10-82221) and Patent Document 5 (Japanese Utility Model Application Publication No. 58-120353) are examples of structures that apply the load of the biasing means to the drive motor even in the case of a drive motor. In Patent Document 4, even if the drive plate 43 that rotates by the drive force of the drive motor 47 and the swing plate 43 that rotates by the operating force of the key or thumb turn are connected telescopically by a pair of connecting shafts 50, 50 and a coil spring 49, the drive motor 47 is recognized as receiving the load of the coil spring 49. In addition, in Patent Document 5, one end of the spring 11 is hooked to the arm 8a of the angular rotation link 8, so that when the drive force of the motor 2 is transmitted to the angular rotation link 8 via the worm 1, the worm gear 15, and the rotation link 6, the load of the spring 11 is applied to the drive motor 47 (the symbols are those of the respective patent documents).

[0004] Patent Document 6 describes a clutch mechanism for an electric lock. It is a well-known technique to provide a clutch mechanism in a power transmission section that uses a transmission gear, an engagement member, etc., so that the driving force of the electric section is not transmitted to the manual driving section when the electric motor is driven (for example, JP 2006-125128 A, etc.). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2006-125058 A [Patent Document 2] JP 2002-250160 A [Patent Document 3] Japanese Utility Model Application Publication No. 50-35694 [Patent Document 4] Japanese Patent Application Publication No. 10-82221 [Patent Document 5] Japanese Utility Model Application Publication No. 58-120353 [Patent Document 6] JP 2013-204367 A Summary of the Invention [Problem to be solved by the invention]

[0006] Generally, electric locks, like regular locks (locks that are mechanically locked and unlocked), have a spring that gives the lock a clicking action, but the clicking action only acts as a brake when the lock is electrically driven. Therefore, it is desirable to have a structure that allows the spring force to be released when the electric motor is running, thereby saving energy, improving the durability of the motor and mechanism, and improving noise reduction (problem of a novel invention).

[0007] The above and other objects and novel features of the present invention will become more fully apparent from the following description taken in conjunction with the accompanying drawings. However, the drawings are for illustrative purposes only and are not intended to limit the technical scope of the present invention. [Means for solving the problem]

[0008] The click mechanism for an electric lock of the present invention is characterized in that a click piece that operates against the spring force of the biasing means when the manual drive unit is driven, and a click arm that operates almost unaffected by the spring force of the biasing means when the electric drive unit is driven are incorporated into a lock box, the click arm having a cam portion that engages with an interlocking protrusion provided on the power transmission unit of the electric drive unit incorporated into the lock box. The interlocking protrusion is, for example, pin-shaped.

[0009] However, in order to rationally combine each component, the click mechanism for an electric lock in this embodiment is characterized by incorporating within the lock box a click piece on the daruma side, one end of which is journalled on a fixed click shaft and which swings against the spring force of the spring means when the manual drive unit is driven, and a click arm on the electric motor side, which is journalled coaxially on the fixed shaft and swings largely unaffected by the spring force of the spring means when the electric drive unit is driven.

[0010] In the above configuration, the biasing means is characterized in that it comprises a central portion wound around the fixed shaft, one end portion connected to the central portion and supported by the spring end receiving portion of the click piece, and the other end portion connected to the central portion and supported by the spring end receiving portion on the pivot base end side of the click arm.Furthermore, the tip portion extending from the pivot base end side of the click arm is a cam portion having an eye-shaped cam surface formed on the inner peripheral surface, and the cam surface is characterized in that it engages with the interlocking projection of the clutch component member constituting the power transmission unit incorporated in the lock box.

[0011] In addition, the electric lock of the present invention includes the click mechanism described in claim 1, and further includes within the lock box a locking section including a locking piece that can move back and forth, a manual side drive section including a thumbturn device, a cylinder device, and a daruma component member, an electric side drive section controlled by a control signal from a control unit, and a power transmission section located between the manual side drive section and the electric side drive section and including a clutch component member, and the click mechanism is characterized in that it has both a click vibration imparting function and a click vibration eliminating function. Here, the "click vibration elimination function" does not mean completely eliminating the spring force of the urging means. Although it is most preferable to completely eliminate the spring force of the urging means, it also includes an embodiment in which the "impression of the clicking sensation (generation of vibration noise)" is significantly reduced within the scope of the object of the invention. Effect of the Invention

[0012] Since the spring bias can be removed during electric drive, power saving, improved durability of the motor and mechanism, and improved quietness can be achieved. In addition, the click arm 43 has a cam portion 45, which is engaged with the interlocking protrusion 37 provided on the power transmission portion F of the drive portion E on the electric side. Therefore, when the drive portion on the electric side is transmitted to the locking piece via the power transmission portion and the locking piece moves forward and backward to completely lock or completely release, not only is a load not applied to the electric motor 21, but the impression of a clicking sensation (generation of a vibration sound) can be prevented. On the other hand, when the locking piece moves forward and backward by the driving force of the drive portion A on the manual side to "completely lock" or "completely release", the vibration imparting function g1 of the click mechanism G allows the operator to receive the impression of a clicking sensation in the same way as in the conventional embodiment. In some embodiments, the clip piece 42 and one end of the click arm 43 are supported coaxially, so that the biasing means 41 can be rationally arranged on each of the members 42 and 43. Therefore, the internal space of the lock box 1 can be utilized effectively. [Brief description of the drawings]

[0013] 1 to 16 are explanatory views showing an embodiment of the present invention. [Figure 1] 1 is a schematic diagram of a manual drive unit provided in a lock box; [Diagram 2] A schematic explanatory diagram showing the lock box, annular daruma, part of the locking portion, fixed axis, etc. [Diagram 3] An explanatory diagram of the internal structure of an electric lock as seen from one side wall of the lock box. [Figure 4] An explanatory diagram of the internal structure of an electric lock as seen from the other side wall (opposite) of the lock box. [Diagram 5] A conceptual diagram showing the configuration of each part incorporated into the lock box of an electric lock. [Figure 6] 1 is a perspective view showing the connection relationship between the annular daruma that constitutes the manual drive section, the electric drive section, and the power transmission section F that is located between the two drive sections and has a dead drive body. FIG. [Figure 7] 4 is a perspective view of a clutch component that constitutes a power transmission unit on the drive unit side of the electric drive, an interlocking plate having an interlocking protrusion, etc. [Figure 8]FIG. 4 is a perspective view of the components that make up the click mechanism (in assembled state). [Figure 9] FIG. 4 is a perspective view (disassembled state) of the components that make up the click mechanism. [Figure 10] FIG. 13 is an explanatory diagram showing the position of the angle-shaped protrusion of the deadbolt driver at the initial stage of manual operation (locking to unlocking). [Figure 11] An explanatory diagram showing how, during rotation, the angled protrusion of the deadbolt pushes in the tip of the click piece, causing the annular daruma to click. [Figure 12] FIG. 13 is an explanatory diagram of the state when manual unlocking is completed. [Figure 13] FIG. 4 is an explanatory diagram showing the position of the click arm at the initial stage of driving the electric motor operation (from locking to unlocking). [Figure 14] 13 is an explanatory diagram illustrating how, while the clutch gear is rotating counterclockwise, the interlocking projection also rotates together with the clutch gear, causing the click arm to swing in the direction of the arrow. [Figure 15] FIG. 13 is an explanatory diagram showing how the deadbolt is electrically driven in a free state. [Figure 16] FIG. 13 is an explanatory diagram of the state when electric unlocking is completed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The click mechanism G for electric lock X of the present invention is characterized in that a click piece 42 that operates against the spring force of a biasing means 41 when the manual side drive unit A is driven, and a click arm 43 that operates almost without being influenced by the spring force of the biasing means when the electric side drive unit E is driven are incorporated into the lock box 1, and the click arm has a cam portion 43 that engages with an interlocking projection 37 provided on a power transmission unit F of the electric side drive unit E incorporated into the lock box 1. A cam surface 45a is formed on the inner peripheral surface of the cam portion 43, and the cam surface 45a engages with the interlocking projection 37.

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings. Figures 1 to 16 are explanatory diagrams showing a first embodiment of the present invention.

[0016] First, Fig. 1 is a schematic diagram of the manual drive unit (including the daruma component parts) A that is disposed in the lock box 1. In this Fig. 1, a is a door installed at the entrance of a building, the left side is the outer wall surface b of the door, and the right side is the inner wall surface c of the door. The lock box 1 of the electric lock X is fitted into the wooden edge of the door 1, for example.

[0017] The various parts (components) incorporated in the lock box 1 of the electric lock X are as shown in Figures 3, 4, 5, etc. The manual side drive section A includes a cylinder device 2, a thumbturn device 3, and a daruma component 4 that connects the cylinder device 2 and the thumbturn device 3. In this embodiment, it includes a dead drive body 9 having an advancing / retreating arm 19 that is separate from the daruma component 4. The dead drive body 9 has the function of directly transmitting the driving force of the electric side drive section F to the deadbolt 11, which serves as the locking piece of the manual side drive section A, via the advancing / retreating arm 19, and is therefore also a component of the power transmission section F.

[0018] The specific configurations of the cylinder device 2 and thumbturn device 3 are well known technologies, so they will be explained briefly here. The cylinder device 2 has an outer cylinder on the fixed side, an inner cylinder on the rotating side, a movable obstacle (a pin-type, C-type, or other tumbler) that moves to the unlocking alignment line, a biasing means for the movable obstacle, a tailpiece that connects to the rear end of the inner cylinder, etc., and the tailpiece can be selectively rotated in the locking direction or the unlocking direction by inserting the blade of a key into the keyhole of the inner cylinder.

[0019] 1 shows that the front surface of the cylinder body 2a constituting the cylinder device 2 is approximately flush with the outer wall surface b of the door a. Although not shown, when the front surface of the cylinder body 2a protrudes from the outer wall surface of the door a, a decorative ring is provided at the tip of the cylinder body. On the other hand, the thumb turn device 3 has a cylindrical fixed block 3a, a thumb turn shaft 3b provided in the center of this fixed block, and a thumb turn knob 3c integrally provided at the rear end of the thumb turn shaft, and is integrally connected, for example, to the rear end of the cylinder device 2 (for example, Figure 1, paragraph 0022 of JP 2008-308966 A).

[0020] Next, the daruma component 4 comprises an engagement body 5 for the tailpiece of the cylinder body 2a, an engagement body 6 for the thumbturn shaft (each of the engagement bodies 5, 6 has substantially the same structure, so for convenience, only one of the drawings is shown), and an annular daruma 7 having a plurality of engaged portions (e.g., opposing engagement protrusions) 7b on the inner peripheral surface of an annular wall portion 7a that engage with and disengage from each of the engagement bodies 5, 6. In this embodiment, the annular daruma 7 has arc-shaped engagement teeth (daruma gear) 7c on a portion of the outer peripheral surface of the annular wall portion 7a.

[0021] As shown in the perspective view of Figure 1, each of the engagement bodies 5, 6 consists of an annular plate portion (5a, 6a) having a non-circular, polygonal, +-shaped, etc. engagement hole with which the inner end of a tailpiece or thumbturn shaft engages, and a pair of L-shaped engagement arms (5b, 6b) extending radially outward from the outer circumferential surface of the annular plate portion, and the pair of L-shaped engagement arms 5b, 6b selectively engage with an engaged portion 7b provided in a protruding shape on the inner circumferential surface of the annular daruma 7.

[0022] Next, Figure 2 is a schematic explanatory diagram showing the lock box 1, the annular daruma 7 of the manual drive unit A and part of the locking unit B disposed within the lock box, the fixed shaft 8 for the deadbolt, and the hook shaft 13, etc. In this Figure 2, details such as the horizontal guide long hole for the locking piece formed in the lock box 1 are omitted, and in particular, the annular daruma 7 visible from the opening formed in the lower end of the wide side wall of the lock box 1 and the protruding tip of the locking unit B protruding from the front plate of the lock box 1 are shown.

[0023] In this embodiment, the locking unit B is composed of a deadbolt 11 that moves forward and backward while being guided by a horizontal long hole, and a hook deadbolt 12 that is journaled on a hook shaft 13 and rotates in conjunction with the deadbolt 11 via the hook interlocking shaft and the hook interlocking shaft guide long hole. The configuration of the locking unit B is a well-known technique (for example, the drawings, paragraph 0028 of JP 2013-204367 A, JP 2006-125128 A, etc.), so it will be explained briefly here.

[0024] Generally, a deadbolt 12 is supported in a metal lock box 1 so as to be freely rotatable about a deadbolt fixed shaft 13. The deadbolt 12 advances and retreats from the end face, tracing an arc-shaped trajectory in response to the advance and retreat of the deadbolt.

[0025] Next, Fig. 3 is an explanatory diagram of the internal structure of the electric lock X as seen from one side wall of the lock box 1, showing the front side of the click arm 43 that constitutes the click mechanism G described below. Meanwhile, Fig. 4 is an explanatory diagram of the internal structure of the electric lock X as seen from the other side wall of the lock box 1, showing the back side of the click arm 43.

[0026] Next, Fig. 5 is a conceptual diagram showing the configuration of each part incorporated in the lock box 1 of the electric lock X. In these figures, the electric lock X incorporates, in addition to the click mechanism part G, a manual side drive part A including a thumbturn device, a cylinder device, and a daruma component part, a locking part B including a locking piece that can move forward and backward, a power source part C such as a secondary battery, a control part D that receives electricity from the power source part C, an electric side drive part E controlled by a control signal from the control part, and a power transmission part F located between the manual side drive part A and the electric side drive part E and including a clutch component part 30 as a component part, and the click mechanism part G has both a click vibration imparting function g1 and a click vibration canceling function g2.

[0027] FIG. 6 is a perspective view showing the connection relationship between the annular daruma 7 that constitutes the manual drive unit A, the electric drive unit E, and the power transmission unit F that is located between the two drive units A and E and has a dead drive body 9 that meshes with the annular daruma 7. As mentioned above, the deadbolt driver 9 is a member that drives the deadbolt 11 as a locking piece, but since the driving force of the electric side drive unit E is transmitted to the deadbolt 11 via a reduction gear train and a clutch member, it can also be included as a component of not only the manual side drive unit A but also the power transmission unit F.

[0028] The structure of the "deadlock drive 9" will be described with reference to Figs. 3, 4, and 6. As shown in Figs. 3 and 4, the deadlock drive 9 is rotatably mounted on a fixed shaft 8 for the deadlock drive, which is provided at the approximate center of the lock box 1. The part that fits onto the fixed shaft 8 is the central shaft cylinder 16. Referring to Fig. 3 with reference to the central shaft cylinder 16, a first gear 17 that meshes with the engagement teeth (daruma gear) 7c of the annular daruma 7 is provided on the outer periphery of the lower sector. Meanwhile, a second gear 18 that meshes with a clutch holder gear constituting a clutch mechanism to be described later is provided on the upper sector. In addition, the first gear 17 is a segment gear that connects to the annular daruma 7, while the second gear 18 is a segment gear that meshes with a gear 32a of the clutch holder 32 on the electric motor 21 side.

[0029] Furthermore, the annular daruma 7 of the daruma component does not have an advancing / retreating arm that selectively presses against the inclined surface at the rear end of the deadbolt, as in ordinary darumas, so the deadbolt driver 9 of the embodiment has a pair of advancing / retreating arms 19 in the radial direction on both sides of the sectorial portion having the first gear 17 (see Figures 3 and 4). The advancing / retreating arms 19 selectively engage with and disengage from an advancing / retreating receiving portion formed at an angle at the rear end of the deadbolt 11 and a retreating receiving portion spaced a predetermined distance from the advancing / retreating receiving portion.

[0030] In addition, in the present invention, the click mechanism G has the click piece 42 as a constituent element, and is provided with a "push-in protrusion 20" for swinging the click piece 42 to a predetermined range against the spring force of the biasing means 41 when the annular daruma 7 rotates in the forward and reverse directions. In this embodiment, the push-in protrusion 20, which is generally mountain-shaped, extends radially outward from the outer circumferential surface of the central shaft tube portion 16 (see FIG. 3).

[0031] Here, the electric drive unit E and the speed reducing means 22 will be described with reference to FIG. 6. The electric drive unit E employs an electric motor 21 capable of forward and reverse rotation. The electric motor 21 can be powered by a battery or a commercial power source. A worm gear is fixed to the output shaft of the electric motor 21, and large and small speed reducing gears constituting the speed reducing means 22 are connected to the worm gear. The speed reducing gear that meshes with the worm gear is not only the first gear 23, but also a second gear 24 that meshes with the first gear 23 and the clutch gear 31 on the electric drive side. The second gear 24 is added in order to enhance the speed reducing effect. Note that how the speed reduction by the speed reducing means 22 is transmitted to the components of the clutch mechanism is not an essential feature of the present invention (the design can be modified as appropriate).

[0032] Next, Fig. 7 is a perspective view of a clutch component 30, an interlocking plate 36 having an interlocking protrusion 37, and the like that constitute the power transmission section F on the driving section E side of the electric drive section. A "power transmission mechanism including a clutch component" will be described with reference to Fig. 7. Note that, among the power transmission mechanism in Fig. 7, components such as a clutch gear (driving side member) 31 that constitutes the clutch component 30, a clutch holder (driven side member) 32, a pair of arm-shaped transmission engagement pieces 33, 34 that are incorporated into a recessed portion 31a of the clutch gear, and a frame-shaped transmission release piece 35 that is supported inside the clutch holder 32 are publicly known or well-known technologies to those skilled in the art (for example, Figs. 3 and 4, paragraph 0009 of JP 2013-204367 A, etc.), so detailed description will be omitted and new matters will be described here.

[0033] In the embodiment of the present invention, the clutch component 30 comprises a disk-shaped clutch gear 31, a circular interlocking plate 36 which is glued into a recess on one side of the clutch gear and fixed by a fitting method using a plurality of fixing pins or the like, and an interlocking projection 37 which protrudes from one side near the peripheral end of the interlocking plate 36 and comes into sliding contact with an eye-shaped cam surface 45a formed on the inner peripheral surface of a cam portion 45 of a click arm 43. The interlocking plate 36 has a shaft hole 36a in the center through which a fixing shaft for the clutch gear passes, and a plurality of small mounting holes for fixing pins are formed concentrically with the shaft hole 36a.

[0034] To briefly explain the meshing relationship, the disk-shaped clutch gear 31 meshes with the small diameter gear of the second gear 24 of the aforementioned speed reducing means 22, and the rotational force of the second gear 24 is transmitted to the clutch holder 32 via arm-shaped transmission engagement pieces 33, 34. The rotational force of the clutch holder 32 is then transmitted to the dead drive body 9. Therefore, the rotational force of the dead drive body 9 is transmitted to the annular daruma 7 via the advancing and retreating arm 19. Since the power transmission section F includes the clutch member 30, the driving force of the drive section E on the electric section side is not transmitted to the drive section A on the manual section side (excluding the dead drive body 9, however).

[0035] Next, FIG. 8 is a perspective view of the members that make up the click mechanism (in an assembled state), and FIG. 9 is a perspective view of the members that make up the click mechanism (in an exploded state).

[0036] The click mechanism part (or "click mechanism") G for an electric lock is incorporated in the lock box 1 and comprises a long, plate-shaped click piece 42 on the daruma side, one end of which is journalled on a fixed shaft 40 for clicking and which oscillates against the spring force of a spring means 41 provided on the fixed shaft 40 when the daruma component member 4 constituting the manual side drive part A is driven, and a long click arm 43 on the electric motor side, which is journalled coaxially on the fixed shaft 40 and which oscillates almost without being influenced by the spring force of the spring means when the electric motor 21 constituting the electric side drive part is driven.

[0037] The biasing means 41 is composed of a central portion 41a wound around the fixed shaft 40, one end portion 41b connected to the central portion and supported by the spring end receiving portion 42a of the click piece, and the other end portion 41c connected to the central portion and supported by the spring end receiving portion 43a on the pivot base end side of the click arm. The click piece 42 has the stepped spring end receiving portion 42a in a portion near the non-numbered shaft hole, and further has a vertical wall-shaped receiving portion 42b at its tip for the push-in projection 20 of the dead drive body 9 described above.

[0038] Furthermore, in this embodiment, the click arm 43 is a clip-type support member having upper and lower plates so as to clamp the central portion to the tip portion of the long plate-like click piece 42, and the side supporting one side of the click arm 43 (the lower side in FIG. 8) protrudes in the longitudinal direction beyond the tip portion of the click piece 42. In addition, the wide tip portion extending from the pivot base end side having the spring receiving portion 43a of the click arm 43 is a cam portion 45 having an eye-shaped cam surface 45a formed on its inner peripheral surface, and the cam surface 45a engages with the interlocking projection 37 on the clutch gear 31 side of the clutch component member 30 constituting the power transmission portion F incorporated in the lock box 1.

[0039] Next, the cases of "driving by manual operation" and "driving by starting the electric motor" in the case of locking to unlocking will be described.

[0040] First, Figures 10 to 12 show the case of driving by manual operation. That is, Figure 10 is an explanatory diagram showing the position of the pushing protrusion (mountain-shaped protrusion) 20 of the dead drive body 9 at the beginning of manual operation (when locking → unlocking), Figure 11 is an explanatory diagram showing how the tip of the mountain-shaped protrusion 20 of the dead drive body 9 pushes the tip of the click piece 42 during rotation, which causes the ring-shaped daruma 7 to click, and Figure 12 is an explanatory diagram when manual unlocking is completed.

[0041] Next, Fig. 13 to Fig. 16 show the case of driving by starting the electric motor 21. That is, Fig. 13 is an explanatory diagram showing the position of the click arm 43 at the beginning of driving the electric motor 21 (when locking → unlocking). At this time, the click arm 43 is supported by the interlocking protrusion 37 that abuts against the cam surface 45a. Fig. 14 is an explanatory diagram in which the interlocking protrusion 37 also rotates together with the clutch gear 31 while the clutch gear 31 rotates counterclockwise, causing the click arm 43 to swing in the direction of the arrow. At this time, the click arm 43 moves before the clutch is engaged. Fig. 15 is an explanatory diagram in which the dead drive body 9 is electrically driven in a free state, and Fig. 16 is an explanatory diagram when the electric unlocking is completed. At this time, the clutch gear 31 rotates once, and the click arm 43 returns to the initial position.

[0042] Regarding the drive of the electric motor 21, the case where the door goes from locked to unlocked has been explained. However, when the door goes from unlocked to locked, the clutch gear 31 rotates counterclockwise and each component operates in the opposite manner, and the final operating component, the locking piece (deadbolt 11, deadbolt 12), retracts into the lock box 1 due to the reverse rotation of the deadbolt driver 9.

[0043] <Additional Note> The interlocking projection 37 guided by the cam portion 45 of the click arm 43 may be provided at an appropriate location on the power transmission portion of the drive unit on the electric side. That is, the interlocking projection 37 that comes into sliding contact with the eye-shaped cam surface 45a formed on the inner peripheral surface of the cam portion 45 of the click arm 43 is provided on, for example, the clutch component 30 in the embodiment, but it may also be provided on a reduction gear or the like that constitutes the power transmission portion. [Industrial Applicability]

[0044] The present invention is applied in the industry of electronic locks installed on the entrance doors of houses. [Explanation of symbols]

[0045] X: Electric lock, 1...lock box, A: Manual drive unit, 2...cylinder device, 2a...cylinder body, 3...Thumb turn device, 3b...Thumb turn shaft, 3c...Thumb turn knob, 4... Daruma component member, 5, 6... engagement body, 7... annular daruma, 8...Fixed shaft for deadbolt drive, 9: deadbolt driver; 16: central shaft cylinder; 20: push-in protrusion; B...Lock, 11...Deadbolt, 12...Kamade, C...Power supply section (battery), D...Control unit (IC chip), G…Click mechanism, 40…Fixed axis for clicking, 41... biasing means, 42…Click Piece, 43...click arm, 45...cam portion, 45a...cam surface, g1...Click vibration function, g2...Click vibration elimination function, E: Electric drive unit, 21...electric motor, F: Power transmission section, 22...deceleration means, 30...Clutch component, 31: clutch gear; 36: interlocking plate; 37: interlocking protrusion; 32…Clutch holder, 33...transmission engagement piece, 35...Transmission release piece.

Claims

1. A click mechanism for an electric lock comprises a click piece which operates against the spring force of the biasing means when the manual drive section is driven, and a click arm which operates almost without being influenced by the spring force of the biasing means when the electric drive section is driven, and which is incorporated into a lock box, and the click arm has a cam portion which engages with an interlocking protrusion provided on the power transmission section of the electric drive section incorporated into the lock box.

2. An electric lock that includes the click mechanism described in claim 1, and further includes within the lock box a locking section including a locking piece that can move back and forth, a manual side drive section including a thumbturn device, a cylinder device, and a daruma component member, an electric side drive section controlled by a control signal from a control unit, and a power transmission section located between the manual side drive section and the electric side drive section and including a clutch component member, and the click mechanism has both a click vibration imparting function and a click vibration eliminating function.

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