JP2016160734A - Door power generation device and electric lock system including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door power generation device etc. for suppressing damage to a gear.SOLUTION: A door power generation device 9 includes: an outdoor side operation member 41 that is rotatably provided on an outdoor side wall face 2c of a door 2; a power generator 42 for converting rotational energy of the outdoor side operation member 41 to electric energy; a transmission mechanism 44 including a first gear 60 for transmitting rotation of the outdoor side operation member 41 to the power generator 42; and a buffer mechanism 45 including a compression coil spring 67 that is elastically deformed depending on torque acting upon the outdoor side operation member 41 to buffer the torque transmitted from the outdoor side operation member 41 to the first gear 60.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a door power generation device that generates power by opening and closing an operation member, and an electric lock system including the door power generation device.

  In recent years, electric locks that electrically lock and unlock doors have been widely used. The electric lock, for example, advances and retracts the dead bolt by receiving power supply from a commercial power source or a battery. When a commercial power source is used, there is a problem that extra cost and time are required for wiring work in the door. When the battery is used, there is a possibility that the electric power necessary for locking / unlocking cannot be obtained due to the consumption of the battery.

  In order to solve the above problems, a simple power source such as a self-power generation unit has been proposed. For example, a power generator for a door described in Patent Literature 1 includes a knob shaft extending from a knob, a first gear fixed to the knob shaft, a second gear meshing with the first gear, and a second gear. And a generator to be rotated. The rotational energy of the knob is increased by two gears and transmitted to the generator. The electrical energy generated by the power generator operates a collation means such as a fingerprint to authenticate the user.

JP 2000-204806 A

  However, in the door power generation device described in Patent Document 1, when the knob is rotated with a very strong force (high torque), an impact load may be applied to the meshing point of each gear. In this case, the teeth of each gear may be damaged.

  In order to solve the above-described problems, an object of the present invention is to provide a door power generation device that suppresses gear breakage and an electric lock system including the door power generation device.

  In order to achieve the above-described object, a door power generation device according to the present invention includes an operation member that is rotatably provided on a wall surface of the door, a generator that converts rotational energy of the operation member into electric energy, and the operation member. A transmission mechanism including a gear that transmits rotation to the generator; and a buffer mechanism including an elastic member that elastically deforms according to torque acting on the operation member and buffers torque transmitted from the operation member to the gear; It is equipped with.

  According to this configuration, when the operation member is rotated with a force (hereinafter also referred to as “normal load”) less than the elastic force (biasing force) of the elastic member, the elastic member of the buffer mechanism hardly deforms. Therefore, the rotation of the operation member is directly transmitted to the gear (transmission mechanism), and the operation member and the gear rotate together. On the other hand, when the operating member is rotated with a force (hereinafter also referred to as “impact load”) that is greater than the elastic force (biasing force) of the elastic member, the torque acting on the operating member is greater than that when rotating with the normal load. Also grows. The elastic member of the buffer mechanism is elastically deformed to absorb the force (torque) that rotates the operation member. For this reason, immediately after the operation member starts rotating, the rotation of the operation member is not transmitted to the gear (transmission mechanism), and the gear does not rotate. As the operation member rotates, the elastic member transmits torque (rotational force) to the gear while relaxing the impact load. Therefore, the impact load acting on the operation member does not directly act on the meshing point of the gear. Thereby, damage to the teeth of the gear can be prevented.

  In this case, the buffer mechanism includes a first connecting member that is rotatably provided with the operation member, a second connecting member that is formed so as to include the first connecting member and is rotatably provided with the gear, A plurality of compression coil springs as the elastic member provided between the first connection member and the second connection member, wherein the second connection member is connected to the first connection member via the compression coil springs. It is preferable that the first connecting member is allowed to rotate within a range in which the compression coil springs are connected and elastically deformable.

  In other cases, the buffer mechanism includes a first connecting member provided rotatably with the operation member, a second connecting member formed to include the first connecting member, and rotatably provided with the gear, A plurality of elastic rubbers as the elastic member provided between the first connecting member and the second connecting member, wherein the second connecting member is interposed between the first and second elastic members. It is preferable that the first connecting member is allowed to rotate within a range in which each elastic rubber is elastically deformable.

  According to these structures, the 1st connection member is installed in the 2nd connection member so that it may rotate within the displacement range of each elastic member (compression coil spring and elastic rubber). When the operating member is rotated with a normal load, each elastic member is not substantially deformed, and the first connecting member and the second connecting member rotate integrally. Therefore, the gear rotates integrally with the operation member via each connecting member. On the other hand, when the operating member is rotated by an impact load, the elastic member on the downstream side in the rotation direction is compressed via the first connecting member. That is, only the first connecting member rotates, and the compressed elastic member absorbs torque (rotational force) acting on the operation member. For this reason, the second connecting member and the gear do not rotate immediately after the operation member starts rotating. As the operation member rotates, the second coupling member and the gear start to rotate via the compressed elastic member. As described above, the buffer mechanism buffers the impact load transmitted from the operation member to the gear. Thereby, since the impact load does not directly act on the meshing point of the gear, the gear teeth can be prevented from being damaged.

  In other cases, the buffer mechanism includes a first connecting member that is rotatably provided with the operation member, a second connecting member that is rotatably provided with the gear, the first connecting member, and the second connecting member. It is preferable that the torsion coil spring as the elastic member connected to the torsional spring is included.

  According to this configuration, the operation member is connected to the gear via the torsion coil spring or the like. When the operating member is rotated with a normal load, the torsion coil spring is not substantially deformed, and the first connecting member and the second connecting member rotate integrally. Therefore, the gear rotates integrally with the operation member via each connecting member. On the other hand, when the operating member is rotated with an impact load, only the first connecting member rotates, and the torsion coil spring elastically deforms and absorbs torque (rotational force) acting on the operating member. For this reason, immediately after the rotation of the operation member is started, the rotation of the operation member is not transmitted to the second connecting member, and the gear or the like does not rotate. As the operation member rotates, the second connecting member and the gear start to rotate via the deformed torsion coil spring. As described above, the buffer mechanism buffers the impact load transmitted from the operation member to the gear. Thereby, since the impact load does not directly act on the meshing point of the gear, the gear teeth can be prevented from being damaged.

  In this case, it is preferable to further include a power storage device that stores electric power generated by the generator.

  According to this configuration, the power storage device can store electrical energy generated by the generator. Thereby, electronic devices (for example, an electric lock, a personal authentication device, etc.) can be operated using the stored electrical energy.

  In order to achieve the above object, an electric lock system of the present invention includes a door power generation device according to any one of the above, an electric lock that causes a dead bolt to advance and retreat on the door end of the door by an electric drive source, It has.

  According to this configuration, the electric lock can be operated by the electric power generated by the door power generator (generator). Thereby, the operation of the electric lock can be ensured even in a situation where the power is insufficient (for example, a power failure or battery exhaustion). In addition, for example, the wiring work for connecting the commercial power supply and the electric lock can be omitted, so that the electric lock system can be constructed easily and inexpensively.

  According to the present invention, damage to the gear can be suppressed.

It is a front view which shows the use condition of the electric lock system which concerns on 1st Embodiment of this invention. It is the side view which looked at the electric lock system concerning a 1st embodiment of the present invention from the mouth end side. It is a front view showing a part of electric lock system concerning a 1st embodiment of the present invention. It is a block diagram of the electric lock system concerning a 1st embodiment of the present invention. It is VV sectional drawing in FIG. It is a disassembled perspective view which shows the buffer mechanism of the power generator for doors concerning 1st Embodiment of this invention. It is a front view showing typically the buffer mechanism of the power generator for doors concerning a 1st embodiment of the present invention. It is a front view showing typically the state where the buffer mechanism of the door power generator concerning a 1st embodiment of the present invention rotated forward. It is a front view which shows typically the buffer mechanism of the power generator for doors concerning a 1st embodiment of the present invention, and (A) shows the state where the 1st connecting member began to rotate forward by shock load, (B ) Shows a state in which the first connecting member and the second connecting member are rotated forward by an impact load. It is a front view which shows typically the buffer mechanism of the power generator for doors which concerns on the modification of 1st Embodiment of this invention. It is a partial cross section figure showing typically the buffer mechanism of the power generator for doors concerning a 2nd embodiment of the present invention. It is a front view which shows typically the buffer mechanism of the power generator for doors concerning 2nd Embodiment of this invention. It is a front view showing typically the state where the buffer mechanism of the door power generator concerning a 2nd embodiment of the present invention rotated forward. It is a buffer mechanism of the power generator for doors concerning a 2nd embodiment of the present invention, and is a front view showing typically the state where the 1st connecting member began to rotate forward by an impact load.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, for the sake of convenience, each direction is set as shown in the drawings, with the outdoor side being the front (front) and the indoor side being the back (rear).

  With reference to FIG. 1 thru | or FIG. 4, the whole structure of the electric lock system 1 provided with the electric power generating apparatus 9 for doors which concerns on 1st Embodiment is demonstrated. FIG. 1 is a front view showing a usage state of the electric lock system 1. FIG. 2 is a side view of the electric lock system 1 as viewed from the side 2a. FIG. 3 is a front view showing a part of the electric lock system 1. FIG. 4 is a block diagram of the electric lock system 1.

  As shown in FIG. 1, the electric lock system 1 is provided, for example, on a door 2 of an office or the like that performs entrance / exit management. The door 2 is, for example, a rectangular outer hinge door that opens toward the outdoor side. The door 2 is rotatably attached to one side of the door frame 3 via a plurality of hinges H.

  The electric lock system 1 includes an electric lock 4, an indoor authentication device 5, an outdoor authentication device 6, a thumbturn 7, a cylinder 8, and a door power generation device 9 (the indoor configuration is (See FIG. 2).

  As shown in FIGS. 2 and 3, the electric lock 4 includes a lock case 10 and a bolt mechanism 11. The electric lock 4 is configured to advance and retract the dead bolt 13 on the side of the doorway 2a of the door 2 by an electric drive source.

  The lock case 10 is formed in a rectangular box shape, and is inserted into the door 2 from the end 2a. The lock case 10 is fixed to the end 2a via the mounting plate 12. A key attachment opening 10a is formed in the upper part of both front and rear side surfaces of the lock case 10, and a handle attachment opening 10b is formed in the lower part (see FIG. 2). Note that wall-side openings 2d and 2e corresponding to the mounting openings 10a and 10b are formed on both wall surfaces 2b and 2c of the door 2 (see FIG. 2).

  The bolt mechanism 11 is provided inside the lock case 10. The bolt mechanism 11 includes a dead bolt 13, an electric actuator 14, a power transmission mechanism 15, a drive control circuit 16, and a latch bolt 17.

  The dead bolt 13 is formed in a substantially rectangular parallelepiped shape that is long in the left-right direction, and is disposed below the cylinder 8 or the like. The dead bolt 13 is provided so as to be able to appear and retract (advance and retreat) from the side 2a (mounting plate 12). The dead bolt 13 is locked when protruding from the mouth 2a, and is unlocked when retracting from the mouth 2a.

  The electric actuator 14 as an electric drive source is constituted by, for example, an electric motor or a solenoid. The power transmission mechanism 15 is configured to transmit the power of the electric actuator 14 to the dead bolt 15. The drive control circuit 16 is configured to control driving of the electric actuator 14.

  The latch bolt 17 is formed in a substantially rectangular parallelepiped shape that is long in the left-right direction, and is disposed below the dead bolt 13. The latch bolt 17 is provided so as to be able to appear and retreat (advance and retreat) from the side 2a (attachment plate 12). The latch bolt 17 is urged by a spring 17a so as to protrude from the side 2a. The latch bolt 17 is temporarily tightened by protruding from the end 2a, and is temporarily released by retreating from the end 2a.

  As shown in FIG. 2, the indoor side authentication device 5 is attached to the indoor side wall surface 2b. The indoor side authentication device 5 includes an indoor side case 20, an indoor side reader 21, and a main control board 22.

  The indoor case 20 is formed in an approximately rectangular box shape elongated in the vertical direction by an insulating material such as synthetic resin. The indoor leader 21 is provided inside the indoor case 20. The indoor reader 21 is configured to receive information related to locking and unlocking of the electric lock 4. The indoor reader 21 includes, for example, an antenna for reading authentication information stored in the non-contact type IC card 23, an IC (Integrated Circuit) chip, and the like (not shown).

  The main control board 22 includes a central processing unit, a memory, etc. (not shown). As shown in FIG. 4, the main control board 22 is electrically connected to the indoor reader 21. The main control board 22 is electrically connected to the drive control circuit 16 of the electric lock 4 and the like via a harness or the like (not shown). The main control board 22 controls the operation of the bolt mechanism 11 based on an operation on the indoor reader 21 and the like.

  As shown in FIG. 2, the outdoor side authentication device 6 is attached to the outdoor side wall surface 2c. The outdoor authentication device 6 includes an outdoor case 25 and an outdoor reader 26. The outdoor reader 26 is electrically connected to the main control board 22 of the indoor authentication device 5 via a harness or the like (not shown) (see FIG. 4). In addition, since each structure of the outdoor side authentication apparatus 6 is substantially the same as each structure of the above-mentioned indoor side authentication apparatus 5, those detailed description is abbreviate | omitted.

  The indoor and outdoor authentication devices 5 and 6 may be provided with biometric authentication devices such as touch keys, numeric keys, or fingerprints in place of / in addition to the readers 21 and 26. In place of the IC card 23, authentication information may be stored in a key head or tag.

  As shown in FIG. 2, the thumb turn 7 is attached to the key attachment opening 10 a of the lock case 10 from the indoor side wall surface 2 b side. The thumb turn 7 has a body member 30, a knob 31, and a thumb turn shaft 32.

  The body member 30 is formed in a substantially cylindrical shape that is long in the front-rear direction. A substantially frustoconical decorative ring 30 a is attached to the interior side (rear part) of the body member 30. The knob 31 is formed in a flat plate shape and is provided on the indoor side of the body member 30. The knob 31 is connected to the rear end of the thumb turn shaft 32. The thumb turn shaft 32 is rotatably supported on the shaft center portion of the body member 30. The front end portion of the thumb turn shaft 32 is engaged with the power transmission mechanism 15 in the lock case 10.

  For example, when the user rotates the knob 31 in one direction (locking direction), the dead bolt 13 protrudes from the lock case 10 and engages with the strike 3a provided on the door frame 3 (see FIG. 3). On the other hand, when the user rotates the knob 31 in the other direction (unlocking direction), the dead bolt 13 is pulled into the lock case 10 and detached from the strike 3a.

  As shown in FIG. 2, the cylinder 8 is attached to the key attachment opening 10a of the lock case 10 from the outdoor wall surface 2c side. The cylinder 8 includes a cylinder body 35 and a keyhole portion 36.

  The cylinder body 35 is formed in a substantially cylindrical shape that is long in the front-rear direction. A substantially frustoconical decorative ring 35 a is attached to the outdoor side (rear part) of the cylinder body 35. The keyhole portion 36 is rotatably supported by the axial center portion of the cylinder body 35. A key hole 36a for inserting a mechanical key (not shown) is opened in the outdoor end surface of the key hole portion 36 (see FIG. 3). The rear end portion of the keyhole portion 36 is engaged with the power transmission mechanism 15 in the lock case 10.

  The keyhole portion 36 rotates in accordance with the rotation operation of the mechanical key inserted into the keyhole 36a. For example, when the user rotates the mechanical key (key hole portion 36) in one direction (locking direction), the dead bolt 13 is protruded from the lock case 10 and fitted into the strike 3a (see FIG. 3). On the other hand, when the user rotates the mechanical key (key hole portion 36) in the other direction (unlocking direction), the dead bolt 13 is pulled into the lock case 10 and detached from the strike 3a.

  Here, with reference to FIG. 4, the unlocking operation | movement of the electric lock system 1 is demonstrated. For example, a person who wants to enter from outside the room holds the IC card 23 over the outside reader 26 (see FIG. 2). The outdoor reader 26 transmits the authentication information read from the IC card 23 to the main control board 22. The main control board 22 compares and discriminates the read authentication information with specific authentication information. When it is determined that the pieces of authentication information match, an unlock signal is output from the main control board 22 to the drive control circuit 16 of the electric lock 4, and the dead bolt 13 is retracted (unlocked) by driving the electric actuator 14. On the other hand, when it is determined that they do not match, the unlock signal from the main control board 22 is not transmitted, and the unlocking of the electric lock 4 is not performed. The specific authentication information is stored in advance in the memory of the main control board 22. Although detailed description is omitted, a person who wants to leave the room may hold the IC card 23 over the indoor reader 21.

  Next, the door power generation device 9 will be described with reference to FIGS. 3 to 7. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is an exploded perspective view showing the buffer mechanism 45 of the door power generation device 9. FIG. 7 is a front view schematically showing the buffer mechanism 45 of the door power generator 9.

  As shown in FIGS. 3 to 5, the door power generation device 9 includes an indoor operation member 40, an outdoor operation member 41, a generator 42, a power storage device 43, a transmission mechanism 44, and a buffer mechanism 45. , Including. The indoor side operation member 40 and the outdoor side operation member 41 are rotatably provided on the wall surfaces 2 b and 2 c inside and outside the door 2. The generator 42, the power storage device 43, and the transmission mechanism 44 are provided in the lock case 10 (see FIG. 2). The buffer mechanism 45 is built in a part of the outdoor operation member 41.

  As shown in FIG. 5, the indoor operation member 40 includes an indoor pedestal 50 and an indoor lever handle 51. The indoor operation member 40 is made of a metal material such as stainless steel, for example.

  The indoor side pedestal 50 includes an indoor side fixing portion 52 and an indoor side cover 53. The indoor side fixing portion 52 and the indoor side cover 53 are each formed in a substantially bottomed cylindrical shape.

  The indoor side fixing portion 52 has a circular shaft hole 52a that passes through the center of the bottom surface. The indoor side fixing portion 52 is disposed so that the shaft hole 52a is aligned with the wall side opening 2e of the indoor side wall surface 2b, and is attached to the indoor side wall surface 2b.

  The indoor cover 53 is formed in a cylindrical shape that is slightly larger than the indoor fixing portion 52. The indoor side cover 53 has a circular support hole 53a that passes through the center of the bottom surface thereof. The indoor cover 53 is attached so as to cover the indoor fixing portion 52. That is, the indoor side fixing portion 52 is fitted inside the indoor side cover 53. Therefore, a pedestal space S <b> 1 is formed between the indoor side fixing portion 52 and the indoor side cover 53.

  The indoor lever handle 51 includes a grip 51a and a cylindrical part 51b, and is integrally formed in a substantially L shape in plan view. The grip 51a is a part gripped by the user and extends substantially parallel to the indoor side wall surface 2b. The cylindrical part 51b extends forward from one end of the grip part 51a. The cylindrical portion 51 b is rotatably fitted in the support hole 53 a of the indoor cover 53. The grip 51a is rotated downward (rotation angle is less than 90 degrees) from a substantially horizontal initial position. The indoor lever handle 51 (cylindrical portion 51b) is connected to a connecting shaft 74 (described later) that passes through the door 2 (lock case 10) and the indoor base 50.

  The outdoor operation member 41 includes an outdoor pedestal 55 and an outdoor lever handle 56. The outdoor operation member 41 is formed symmetrically with the above-described indoor operation member 40 and the door 2 interposed therebetween, and thus detailed description thereof is omitted.

  The outdoor side pedestal 55 has an outdoor side fixing part 57 and an outdoor side cover 58. The outdoor side fixing part 57 and the outdoor side cover 58 are each formed in a substantially bottomed cylindrical shape. The outdoor side fixing | fixed part 57 has the circular axial hole 57a, and is attached to the outdoor side wall surface 2c. The outdoor cover 58 has a circular support hole 58a, and is attached so as to cover the indoor fixing portion 52. A pedestal space S2 is formed between the outdoor fixing portion 57 and the outdoor cover 58.

  The outdoor lever handle 56 has a gripping part 56a and a cylindrical part 56b. The gripping part 56a extends substantially parallel to the outdoor side wall surface 2c. The cylindrical portion 56b extends rearward from one end portion of the grip portion 56a. The cylindrical portion 56b is rotatably fitted in the support hole 58a of the outdoor cover 58. A front end portion of a handle shaft 56c is connected to the outdoor lever handle 56 (cylindrical portion 56b). The handle shaft 56c extends toward the pedestal space S2. The handle shaft 56c is formed in a rod shape having a rectangular cross section made of, for example, a metal material.

  The generator 42 is configured to convert rotational energy (work) of each operation member 40, 41 (each lever handle 40b, 41b) into electric energy (electric power). As shown in FIG. 3, an input gear 42 b is fixed to the input shaft 42 a of the generator 42. The generator 42 generates power using the law of electromagnetic induction by rotating the input shaft 42a. In addition, since the generator 42 has a general configuration for generating power using the law of electromagnetic induction, description of its structure is omitted.

  As shown in FIG. 4, the power storage device 43 is configured to include a secondary battery 43 a and a charging circuit 43 b. The power storage device 43 is provided to store the power generated by the generator 42.

  The secondary battery 43a is configured to store electricity by charging and to be used repeatedly as a battery. The secondary battery 43a is electrically connected to the main control board 22 of the indoor side authentication device 5 via a harness or the like (not shown). The charging circuit 43b is electrically connected to the generator 42 and the secondary battery 43a. Control for charging the secondary battery 43a with power generated by the charging circuit 43b and the generator 42 and control for preventing overcharging are executed.

  As shown in FIGS. 3 and 5, the transmission mechanism 44 is a gear train including a plurality of gears, and includes a first gear 60, a second gear 61, and a third gear 62. Has been. The transmission mechanism 44 is configured to transmit the rotation of the operation members 40 and 41 (the lever handles 40b and 41b) to the generator 42. The transmission mechanism 44 is set to a gear ratio (speed ratio) that can increase the rotational speed of the operation members 40 and 41 (the lever handles 40b and 41b).

  The first gear 60 is rotatably supported in the lock case 10. The first gear 60 engages with the connecting shaft 74 so as not to rotate relative to the connecting shaft 74 and rotates integrally with the connecting shaft 74.

  The second gear 61 and the third gear 62 are rotatably supported by support shafts 63 and 64 provided in the lock case 10, respectively. The second gear 61 is a so-called stepped gear, and includes a second large-diameter gear 61a and a second small-diameter gear 61b. The second small diameter gear 61b has a sufficiently smaller diameter than the second large diameter gear 61a and is integrally formed on the same axis as the second large diameter gear 61a. Similarly, the third gear 62 has a third large-diameter gear 62a and a third small-diameter gear 62b.

  The second gear 61 is disposed so that the second small diameter gear 61b meshes with the first gear 60 and the second large diameter gear 61a meshes with the third small diameter gear 62b. The third gear 62 is disposed so that the third large-diameter gear 62 a meshes with the input gear 42 b of the generator 42.

  As shown in FIG. 5, the buffer mechanism 45 is provided between the outdoor operation member 41 and the first gear 60. Specifically, the buffer mechanism 45 is built in the outdoor pedestal 55 (pedestal space S2) of the outdoor operation member 41. In the following description, for the sake of convenience, the outdoor lever handle 56 (grip 56a) is in the initial position.

  As shown in FIG. 6, the buffer mechanism 45 includes a first connecting member 65, a second connecting member 66, and four compression coil springs 67. The first connecting member 65 is rotatably provided together with the outdoor operation member 41 (outdoor lever handle 56). The 2nd connection member 66 is formed so that the 1st connection member 65 can be included. Each compression coil spring 67 is provided between the first connecting member 65 and the second connecting member 66.

  As shown in FIGS. 6 and 7, the first connecting member 65 includes a first main body part 70, a pair of arm parts 71, and a pair of pressing parts 72. The first connecting member 65 is integrally formed of, for example, a metal material.

  The 1st main-body part 70 is formed in the column shape. A connecting hole 70 a penetrating in the front-rear direction is formed in the axial center of the first main body 70. The connection hole 70a is formed in a rectangular shape when viewed from the front. The rear end portion of the handle shaft 56c is fitted in the connection hole 70a so as not to be relatively rotatable.

  The pair of arm portions 71 are extended from the front side of the outer peripheral surface of the first main body portion 70 toward the radially outer side. The pair of arm parts 71 are formed symmetrically with respect to the first main body part 70. Each arm 71 is formed in a rod shape having a substantially rectangular cross section. Each arm portion 71 is sufficiently thinner than the diameter of the first main body portion 70 in front view, and forms the same plane as the front end surface of the first main body portion 70.

  Each of the pair of pressing portions 72 is formed in a substantially cylindrical shape, and extends from the distal end portion (extending end portion) of the arm portion 71 toward the rear side. The front-rear length of each pressing portion 72 is formed to be substantially the same as the front-rear length of the first main body portion 70. The diameter of each pressing portion 72 is formed to be substantially the same as the width of the arm portion 71 in a front view.

  The second connecting member 66 includes a second main body portion 73 and a connecting shaft 74. For example, the second connecting member 66 is integrally formed of a metal material.

  The 2nd main-body part 73 is formed in the column shape flat in the front-back direction. On the front end surface of the second main body 73, a receiving portion 75 for receiving each compression coil spring 67 and the first connecting member 65 is recessed. The accommodating portion 75 has a turning recess 76 and a pair of turning grooves 77.

  The rotating recess 76 is a cylindrical recess and is formed so as to be able to accommodate the first main body portion 70 of the first connecting member 65. Specifically, the turning recess 76 is formed so that the first main body portion 70 located on the rear side of each arm portion 71 is fitted. The rotation recess 76 is formed with a dimensional tolerance that allows rotation around the axis of the first main body 70.

  The pair of turning groove portions 77 are recessed at positions spaced radially outward from the turning recess 76 in front view. The pair of rotating groove portions 77 are formed symmetrically with respect to the rotating recess 76. The pair of turning groove portions 77 are extended in the circumferential direction so as to surround the turning recess 76. Each of the pair of rotating groove portions 77 is a substantially V-shaped groove that is bent at an obtuse angle at the intermediate portion in the vertical direction, and is formed vertically symmetrical. In addition, since a pair of rotation groove part 77 is left-right symmetric, only one rotation groove part 77 is demonstrated below.

  A pair of convex portions 78 are formed in the intermediate portion (folded portion) of the rotating groove portion 77 so as to narrow the groove width. In the following description, a portion where the groove width of the turning groove portion 77 is narrowed is referred to as a “squeezed portion 77a”, and a portion that is vertically symmetric with respect to the narrowed portion 77a is referred to as a “spring fitting portion 77b”.

  As described above, the first main body portion 70 of the first connecting member 65 is fitted in the turning recess 76 so as to be rotatable around the axis. The arm portion 71 of the first connecting member 65 is bridged between the rotating recess 76 and the rotating groove portion 77, and the pressing portion 72 of the first connecting member 65 is accommodated in the narrowed portion 77a. The pressing portion 72 is provided so as to be movable (turnable) between the narrowed portion 77a and the spring fitting portion 77b as the first main body portion 70 rotates. In the following description, the position where each pressing portion 72 is accommodated in the narrowed portion 77a is also referred to as a “reference position”.

  A compression coil spring 67 is fitted to each of the pair of upper and lower spring fitting portions 77b. Each spring fitting portion 77b is formed with a dimensional tolerance that allows elastic deformation (expansion / contraction) of the compression coil spring 67.

  As shown in FIGS. 5 and 6, the connecting shaft 74 is formed in a rod shape having a rectangular cross section. The connecting shaft 74 extends from the rear end surface of the second main body portion 73 toward the rear side. The connecting shaft 74 is formed on the same axis as the second main body 73, and is formed on the same axis as the handle shaft 56c (first connecting member 65). The connecting shaft 74 passes through the door 2 (lock case 10), and its rear end is fixed to the indoor lever handle 51 (cylindrical portion 51b).

  The connecting shaft 74 is connected to the first gear 60 and the latch cam 17b at the intermediate portion in the front-rear direction. For this reason, the second connecting member 66 is rotatably provided with the first gear 60 via the connecting shaft 74. The latch cam 17b is provided to convert the rotational motion of the lever handles 40b and 41b into linear motion (advance and retreat) of the latch bolt 17. The latch cam 17b is provided with a torsion spring (not shown) for urging the lever handles 40b and 41b (gripping portions 51a and 56a) toward the initial position.

  As shown in FIG. 7, the four compression coil springs 67 as elastic members are fitted into the respective spring fitting portions 77 b and elastically deformed along the rotation direction of the respective connecting members 65 and 66. A spring seat member 67a is interposed between the compression coil spring 67 accommodated in each spring fitting portion 77b and the pressing portion 72 accommodated in the narrowed portion 77a. Each spring seat member 67 a is biased by the compression coil spring 67 and is in pressure contact with each convex portion 78.

  Although the details will be described later, the four compression coil springs 67 are formed so as to be elastically deformable according to the torque acting on the operation members 40 and 41, respectively. Each compression coil spring 67 acts to buffer the torque (rotational force) transmitted from the operation members 40 and 41 to the first gear 60. The second connecting member 66 is connected to the first connecting member 65 via each compression coil spring 67. The second connecting member 66 is configured to allow the first connecting member 65 to rotate within a range in which each compression coil spring 67 can be elastically deformed.

  Next, the operation of the door power generation device 9 will be described with reference to FIGS. 3 and 7 to 9. FIG. 8 is a front view schematically showing a state where the buffer mechanism 45 is rotated forward. FIG. 9A is a front view schematically showing the buffer mechanism 45, and shows a state in which the first connecting member 65 starts to rotate forward due to an impact load. FIG. 9B is a front view schematically showing the buffer mechanism 45, and shows a state in which the first connecting member 65 and the second connecting member 66 are rotated forward by an impact load. 7 to 9, a triangular mark is shown in order to clarify the rotation of the second connecting member 66. The case where the user opens the door 2 from the outside (when the outdoor lever handle 56 is rotated) will be described.

  First, as shown in FIG. 3, the user rotates the outdoor lever handle 56 (gripping part 56 a) downward (in the direction of arrow F) from the initial position (forward rotation).

  Here, when the user rotates the outdoor lever handle 56 forward with a force (hereinafter also referred to as “normal load”) that is less than the elastic force (biasing force) of each compression coil spring 67, each compression of the buffer mechanism 45 is performed. The coil spring 67 hardly deforms. That is, as shown in FIG. 8, each pressing portion 72 does not move from the reference position, and the first connecting member 65 and the second connecting member 66 rotate integrally. Therefore, the forward rotation of the outdoor lever handle 56 (handle shaft 56c) is directly transmitted to the second connection member 66 (connection shaft 74) via the first connection member 65 and each compression coil spring 67. The first gear 60 rotates positively integrally with the outdoor lever handle 56 via the connecting members 65 and 66. The rotation of the first connecting member 65 is transmitted to the second connecting member 66 mainly by the biasing force of each compression coil spring 67 provided on the downstream side in the rotation direction of the first connecting member 65.

  The forward rotation of the first gear 60 is transmitted to the input gear 42b of the generator 42 via the second gear 61 and the third gear 62 (see FIG. 3). Since the rotational speed of the outdoor lever handle 56 is increased by the transmission mechanism 44, the rotational speed (rotational speed) of the generator 42 (input shaft 42a) is improved. Thereby, the generator 42 can perform an effective electric power generation.

  The electric power generated by the generator 42 is charged to the secondary battery 43a via the charging circuit 43b of the power storage device 43 (see FIG. 4). The electric power charged in the secondary battery 43a is supplied to the main control board 22, the readers 21 and 26, the electric actuator 14, and the like. Thereby, the electric lock system 1 (the electric lock 4, the authentication devices 5, 6, etc.) can be operated using the electric energy stored in the power storage device 43.

  Further, the forward rotational motion of the connecting shaft 74 of the second connecting member 66 is converted into a linear motion of the latch bolt 17 by the latch cam 17b. Then, the latch bolt 17 retracts into the lock case 10 against the urging force of the spring 17a (temporary tightening release state).

  Subsequently, the user rotates the outdoor lever handle 56 (gripping part 56a) in the reverse direction (in the direction of arrow R) toward the initial position (see FIG. 3). Also at this time, as in the case of normal rotation with the normal load described above, each compression coil spring 67 is not substantially deformed, and the first connecting member 65 and the second connecting member 66 rotate together in reverse. Therefore, the first gear 60 rotates reversely integrally with the outdoor lever handle 56 via the connecting members 65 and 66. The reverse rotation of the first gear 60 is transmitted to the generator 42 via the gears 61 and 62. When the user returns the outdoor lever handle 56 to the initial position, the latch bolt 17 protrudes from the butt end 2a side by the urging force of the spring 17a (temporarily tightened state).

  As described above, the generator 42 generates electricity by rotating forward and backward in conjunction with the reciprocating rotation of the lever handles 40b and 41b.

  On the other hand, when the user normally rotates the outdoor lever handle 56 with a force (hereinafter also referred to as “impact load”) that is greater than the elastic force (biasing force) of each compression coil spring 67, it acts on the outdoor lever handle 56. The torque to be increased is larger than when rotating with a normal load. The first connecting member 65 also rotates forward with an impact load together with the outdoor lever handle 56. At this time, as shown in FIG. 9A, each pressing portion 72 of the first connecting member 65 moves in the forward rotation direction from the reference position, and compresses each compression coil spring 67 on the downstream side in the forward rotation direction. That is, only the first connecting member 65 rotates forward with respect to the second connecting member 66, and each compressed compression coil spring 67 absorbs the rotating force (torque) of the outdoor lever handle 56. Therefore, immediately after the outdoor lever handle 56 starts to rotate, the rotation of the outdoor lever handle 56 (first connection member 65) is not transmitted to the second connection member 66 or the first gear 60 (transmission mechanism 44). That is, the second connecting member 66 and the first gear 60 do not rotate.

  As the outdoor lever handle 56 rotates, the compressed compression coil springs 67 begin to transmit the torque (rotational force) of the first connecting member 65 to the second connecting member 66. Then, as shown in FIG. 9B, the second connecting member 66 and the first gear 60 start to rotate via the compressed compression coil springs 67. The forward rotation of the first gear 60 is transmitted to the generator 42 via the gears 61 and 62. Thereby, the generator 42 can generate electric power.

  When the forward rotation of the outdoor lever handle 56 stops, the compressed compression coil springs 67 urge the second connection member 66 in the forward rotation direction using the pressing portions 72 of the first connection member 65 as pedestals. Thereby, the 2nd connection member 66 further rotates forward, and each press part 72 returns to a reference position relatively (refer to Drawing 8). In addition, when the outdoor lever handle 56 is reversely rotated by an impact load, the rotation direction is reversed, and the description is omitted because it is substantially the same as the above description.

  According to the door power generation device 9 according to the first embodiment described above, the first connecting member 65 is installed in the second connecting member 66 so as to rotate within the displacement range of each compression coil spring 67. . Each compression coil spring 67 is elastically deformed and absorbs a force (torque) that rotates the outdoor lever handle 56. When the outdoor lever handle 56 rotates, each compression coil spring 67 transmits torque (rotational force) to the first gear 60 while relaxing the impact load. Therefore, the impact load acting on the outdoor lever handle 56 does not directly act on the meshing point between the first gear 60 and the second gear 61. Thereby, damage to the teeth of the gears 60 and 61 can be prevented. Similarly, the teeth of the second gear 61, the third gear 62, and the input gear 42b can be prevented from being damaged.

  Moreover, according to the electric lock system 1 which concerns on 1st Embodiment, the electric lock 4 can be operated with the electric power which the power generator 9 for doors (generator 42) generated. Thereby, the operation of the electric lock 4 can be ensured even in a situation where the power is insufficient (for example, a power failure or battery exhaustion). In addition, for example, since the wiring work for connecting the commercial power source (not shown) and the electric lock 4 can be omitted, the electric lock system 1 can be constructed easily and inexpensively.

(Modification)
In addition, although the power generator 9 for doors which concerns on 1st Embodiment employ | adopted the compression coil spring 67 as an elastic member, this invention is not limited to this. For example, as shown in FIG. 10, four elastic rubbers 68 may be employed as elastic members in place of the compression coil springs 67.

  The door power generation device 9 according to the first embodiment includes four compression coil springs 67 or four elastic rubbers 68 (also simply referred to as “elastic members” in this paragraph). It is sufficient that two or more elastic members are provided. Further, when the elastic member only needs to absorb the impact load in the forward rotation direction or the reverse rotation direction, it is sufficient that one or more elastic members are provided. The urging force of each compression coil spring 67 and the urging force of each elastic rubber 68 are set experimentally and empirically in consideration of the rigidity and impact resistance performance of the gears 60 to 62.

  Next, with reference to FIG. 11 thru | or FIG. 14, the door electric power generating apparatus 80 which concerns on 2nd Embodiment is demonstrated. FIG. 11 is a partial cross-sectional view schematically showing the buffer mechanism 81 of the door power generator 80. FIG. 12 is a front view schematically showing the buffer mechanism 81 of the door power generator 80. FIG. 13 is a front view schematically showing a state in which the buffer mechanism 81 of the door power generator 80 is rotated forward. FIG. 14 is a front view schematically showing the buffer mechanism 81 in which the first connecting member 82 starts to rotate forward due to the impact load. In FIGS. 12 to 14, triangular marks are illustrated in order to clarify the rotation of the connecting members 82 and 83. In addition, about the structure similar to the electric power generating apparatus 9 for doors which concerns on above-described 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The door power generation device 80 according to the second embodiment is different from the door power generation device 9 according to the first embodiment in the structure of the buffer mechanism 81. As shown in FIG. 11, the buffer mechanism 81 includes a first connecting member 82, a second connecting member 83, and a torsion coil spring 84. The first connecting member 82 is rotatably provided together with the outdoor operation member 41 (outdoor lever handle 56). The second connecting member 83 is rotatably provided with the first gear 60. The torsion coil spring 84 is connected to the first connecting member 82 and the second connecting member 83.

  As shown in FIGS. 11 and 12, the first connecting member 82 is formed in a substantially disk shape, and is opposed to the second connecting member 83 with a gap therebetween. A rear end portion of the handle shaft 56c is fitted to the shaft center of the first connecting member 82 so as not to be relatively rotatable. On the rear surface of the first connecting member 82, a pair of first protrusions 85 are extended toward the rear side. The pair of first protrusions 85 are arranged to be separated from each other. Each first protrusion 85 is formed to have a length that can be engaged with the opposing second connecting member 83.

  The second connecting member 83 includes the second main body portion 86 and the connecting shaft 74 and is integrally formed. The 2nd main-body part 86 is formed in the substantially disc shape. The connecting shaft 74 extends from the rear surface of the second main body portion 86 toward the rear side.

  A pair of second protrusions 87 are provided on the front surface of the second main body 86 so as to be spaced apart from each other. Each of the second protrusions 87 is formed to have a length that cannot be engaged with the opposing first connecting member 82. Each 2nd protrusion 87 and each 1st protrusion 85 are arrange | positioned so that it may become vertically symmetrical.

  A second recess 88 is provided in the front surface of the second main body 86 along the circumferential direction. The second recess 88 is provided at a position facing each first protrusion 85 of the first connecting member 82. Each first protrusion 85 is movably fitted in the second recess 88. Therefore, when the first connecting member 82 rotates with respect to the second connecting member 83, each first protrusion 85 rotates while being guided by the second recess 88. In other words, the second recess 88 defines a rotation range of the first connecting member 82 relative to the second connecting member 83.

  The torsion coil spring 84 is disposed in the gap between the first connecting member 82 and the second connecting member 83. The torsion coil spring 84 is provided so as to be wound around the handle shaft 56c. The torsion coil spring 84 has a pair of spring arms 84a and 84b extending radially outward. The arm angle of the pair of spring arms 84a and 84b is set to about 180 degrees (± 10 degrees). One spring arm 84 a is locked between the pair of first protrusions 85. The other spring arm 84 b is locked between the pair of second protrusions 87.

  Next, the operation of the door power generator 80 (buffer mechanism 81) will be described. In addition, the case where a user opens the door 2 from the outdoors is demonstrated.

  When the user rotates the outdoor lever handle 56 forward with a normal load, the torsion coil spring 84 is not substantially deformed as shown in FIG. To do. Therefore, the first gear 60 rotates integrally with the outdoor lever handle 56 via the connecting members 82 and 83. The forward rotation of the first gear 60 is transmitted to the generator 42 via the gears 61 and 62. Thereby, the generator 42 can generate electric power. Further, the latch bolt 17 is in a temporarily tightened release state.

  On the other hand, when the user rotates the outdoor lever handle 56 with an impact load, only the first connecting member 82 rotates with respect to the second connecting member 83 as shown in FIG. Each first protrusion 85 rotates while being guided by the second recess 88. Then, the torsion coil spring 84 absorbs torque (rotational force) acting on the outdoor lever handle 56 while elastically deforming so as to reduce the arm angle. Therefore, immediately after the outdoor lever handle 56 starts to rotate, the rotation of the outdoor lever handle 56 is not transmitted to the second connecting member 83, and the first gear 60 and the like do not rotate. When the rotation of the outdoor lever handle 56 proceeds, the second connecting member 83 and the first gear 60 start to rotate via the deformed torsion coil spring 84. Thereby, the generator 42 can generate electric power.

  When the forward rotation of the outdoor lever handle 56 stops, the elastically deformed torsion coil spring 84 urges the second connecting member 83 in the forward rotation direction. As a result, the second connecting member 83 further rotates forward, and the arm angle of the torsion coil spring 84 is restored (see FIG. 13). A description of the case where the outdoor lever handle 56 is reversely rotated by an impact load is omitted.

  According to the door power generator 80 according to the second embodiment described above, the outdoor lever handle 56 is connected to the first gear 60 via the torsion coil spring 84 and the like. For this reason, the same effect as the door power generation device 9 according to the first embodiment can be obtained.

  In the door power generation device 80 according to the second embodiment, the first protrusions 85 of the first connection member 82 are guided by the second recesses 88 of the second connection member 83, but the present invention is limited to this. Not. For example, instead of / in addition to the second recess 88, a recess (not shown) may be provided in the first connecting member 82, and each second protrusion 87 of the second connecting member 83 may be guided in this recess. In addition, apart from the protrusions 85 and 87, a guide protrusion (not shown) that is guided by a recess or the like may be provided.

  Although the arm angle of the torsion coil spring 84 of the door power generation device 80 according to the second embodiment is set to about 180 degrees, the present invention is not limited to this. The arm angle of the torsion coil spring 84 is preferably set in the range of 90 degrees to 180 degrees (± 10 degrees). The urging force of the torsion coil spring 84 is set experimentally and empirically in consideration of the rigidity and impact resistance performance of the gears 60 to 62.

  In addition, although the 1st connection members 65 and 82 of the power generators 9 and 80 for doors concerning 1st and 2nd embodiment were provided as a member different from the outdoor side operation member 41, this invention is based on this. It is not limited. For example, the first connecting members 65 and 82 described above may be formed integrally with the outdoor lever handle 56.

  Although the buffer mechanisms 45 and 81 of the door power generation devices 9 and 80 according to the first and second embodiments are built in the outdoor pedestal 55, the present invention is not limited to this. For example, the buffer mechanisms 45 and 81 may be built in the indoor pedestal 50 (pedestal space S1). For example, the buffer mechanisms 45 and 81 may be incorporated in the cylindrical portion 56b of the outdoor lever handle 56 (the cylindrical portion 51b of the indoor lever handle 51). Moreover, although the electric lock system 1 which concerns on 1st and 2nd embodiment employ | adopted what is called a digging lock which installs the lock case 10 in the door 2, this invention is not limited to this. For example, you may employ | adopt what is called an imposition lock attached to the indoor side wall surface 2b of the door 2. FIG. In this case, the buffer mechanisms 45 and 81 may be provided in the case of the imposition lock.

  The door power generation devices 9 and 80 according to the first and second embodiments use a so-called lever handle as an operation member, but the present invention is not limited to this. For example, a so-called knob may be used as the operation member.

  In addition, the room inner side authentication device 5 of the electric lock system 1 according to the first and second embodiments may be omitted. That is, when leaving the room from the room to the room, the user may perform unlocking by operating the thumb turn 7. In this case, the main control board 22 is preferably provided in the outdoor authentication device 6.

  In addition, although the electric lock system 1 which concerns on 1st and 2nd embodiment was not provided with power supplies other than the power generators 9 and 80 for doors, this invention is not limited to this. For example, the electric lock system 1 may use a commercial power source, a dry battery, or the like as the main power source, and the door power generation devices 9 and 80 as the sub power source (for emergency such as a power failure).

  In addition, description of the said embodiment shows one aspect | mode in the electric power generating system for doors which concerns on this invention, and an electric lock system provided with this, Comprising: The technical scope of this invention is not limited to the said embodiment. Absent. The components in the above embodiment can be appropriately replaced or combined with existing components and the like, and the description of the above embodiment does not limit the content of the invention described in the claims. .

1 Electric lock system 2 Door 2a Top 2b Indoor side wall (wall surface)
2c Outdoor wall surface (wall surface)
4 Electric lock 9,80 Door power generator 13 Dead bolt 14 Electric actuator (drive source)
40 Indoor operation member (operation member)
41 Outdoor operation member (operation member)
42 Generator 43 Power storage device 44 Transmission mechanism 45 Buffer mechanism 60 First gear (gear)
61 Second gear (gear)
62 3rd gear
65,82 1st connection member 66,83 2nd connection member 67 Compression coil spring (elastic member)
68 Elastic rubber (elastic member)
84 Torsion coil spring (elastic member)

Claims (6)

An operation member rotatably provided on the wall surface of the door;
A generator that converts rotational energy of the operating member into electrical energy;
A transmission mechanism including a gear for transmitting rotation of the operation member to the generator;
And a buffer mechanism including an elastic member that elastically deforms according to torque acting on the operation member and buffers torque transmitted from the operation member to the gear. The buffer mechanism is
A first connecting member rotatably provided with the operation member;
A second connecting member formed so as to include the first connecting member and rotatably provided with the gear;
A plurality of compression coil springs as the elastic member provided between the first connecting member and the second connecting member;
The second connecting member is connected to the first connecting member via the compression coil springs, and allows the first connecting member to rotate within a range in which the compression coil springs can be elastically deformed. The power generator for doors according to claim 1. The buffer mechanism is
A first connecting member rotatably provided with the operation member;
A second connecting member formed so as to include the first connecting member and rotatably provided with the gear;
A plurality of elastic rubbers as the elastic member provided between the first connecting member and the second connecting member;
The second connecting member is connected to the first connecting member via each elastic rubber, and allows the first connecting member to rotate within a range in which each elastic rubber can be elastically deformed. The power generator for doors according to claim 1. The buffer mechanism is
A first connecting member rotatably provided with the operation member;
A second connecting member rotatably provided with the gear;
The door power generation device according to claim 1, further comprising a torsion coil spring as the elastic member connected to the first connection member and the second connection member.   The door power generation device according to any one of claims 1 to 4, further comprising a power storage device that stores electric power generated by the generator. A door power generation device according to any one of claims 1 to 5,
An electric lock system comprising: an electric lock that moves a dead bolt forward and backward on the door end of the door by an electric drive source.

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