JP4822515B2 - Motor-driven electric lock deadbolt control mechanism - Google Patents

Description

  The present invention relates to a dead-bolt control mechanism (hereinafter simply referred to as a dead-bolt control mechanism) for a motor-driven electric lock, and more particularly to a dead-bolt control mechanism that can be expected to operate reliably for a long time without causing aging.

  The present applicant has previously proposed a new deadbolt control mechanism using Patent Document 1 described later.

This deadbolt control mechanism is rotatably supported on the side plate of the lock box, and forms an operating arm that engages with the deadbolt and moves it in and out of the front plate of the lockbox, and is connected to the inner cylinder of the cylinder lock. A dead gear, a sector gear coaxially and integrally coupled to the dead cam, a micro motor that rotates in the locking direction or the unlocking direction in the opposite direction according to the locking / unlocking signal at the time of locking / unlocking, A differential gear unit connected to the output shaft of the micromotor via a speed reducer, and a positional relationship such that the planetary gear is sandwiched along the movement locus of the planetary gear of the differential gear unit, and the planetary gear is idle. Locking receiving gears and unlocking receiving gears that are arranged at a possible interval, a locking driven gear train that connects the locking receiving gear and the sector gear, and an unlocking receiving gear and the sector gear. Solution to And a module and the number of teeth of the locking receiving gear and the unlocking receiving gear are set so that the deadbolt can be locked and unlocked within one rotation of the gears. In addition, a protruding tooth is formed by setting a tooth width of at least one tooth of the locking receiving gear and the unlocking receiving gear to be larger than the other teeth, and when the locking or unlocking operation is completed, the protruding tooth Is characterized in that the gear train is divided by pushing the swing arm of the differential gear device in the radial direction.
Patent gazette related to Japanese Patent No. 3362208

  In the dead bolt control mechanism according to the invention described in the above-mentioned Patent Document 1, the differential gear device has a principle that the planetary gear is fixed to the swing arm or the friction torque in order for the swing arm to oscillate due to its operating principle. It is necessary to be supported by the swing arm via

  On the other hand, after the swing arm swings and the planetary gear meshes with the receiving gear, the rotational force of the motor is received and transmitted to the gear, so the planetary gear needs to rotate relative to the swing arm. is there.

  In order to combine these contradictory functions, in such a switching device, it is general that the planetary gear is rotatably supported on the swing arm via the friction device, and the present applicant describes the invention described in Patent Document 1. The structure adopted in order to implement is that a corrugated washer is mounted between the swing arm and the planetary gear of a support shaft that rotatably supports the planetary gear on the swing arm.

  The corrugated washer is usually used as a device that generates a large elasticity in a narrow space, for example, a screw loosening stopper. In this case, even if the elasticity is proportional to the amount of elastic deformation, the spring The constant is very large.

  On the other hand, the corrugated washer is always in sliding contact with the swing arm and / or the planetary gear while the motor is rotating. There is an inconvenience that the operation of the dead bolt control mechanism used as a part is uncertain.

  In view of this, the present invention aims to improve the invention described in Patent Document 1 and propose a dead bolt control mechanism in which the friction torque does not change even when used for a long period of time, thereby eliminating the above-described disadvantages.

  In order to achieve the above object, the invention according to claim 1 forms an operating arm that is rotatably supported on the side plate of the lock box and engages with a dead bolt so as to protrude and retract from the front plate of the lock box. In addition, the dead cam connected to the inner cylinder of the cylinder lock, the sector gear coaxially and integrally coupled to the dead cam, and the locking direction or the opposite direction according to the locking / unlocking signal at the time of locking / unlocking A micromotor that rotates in the unlocking direction, a differential gear device that is connected to the output shaft of the micromotor via a speed reducer, and a planetary gear that is sandwiched along the trajectory of the planetary gear of the differential gear device A locking receiving gear and an unlocking receiving gear, which are arranged in a proper positional relationship and spaced apart so that the planetary gear can freely move, a locking driven gear train for connecting the locking receiving gear and the sector gear, Lock receiving gear and section An unlocking driven gear train for connecting the gear, and the module and the number of teeth of the locking receiving gear and the unlocking receiving gear can be locked and unlocked within one rotation of these gears. Set so that it can be operated, and set the tooth width of at least one tooth of the locking receiving gear and the unlocking receiving gear to be larger than the other teeth to form a protruding tooth, and perform the locking or unlocking operation. When completed, this projecting tooth pushes the swing arm of the differential gear device in the radial direction to divide the gear train, and the planetary gear is formed into a cylindrical shape and teeth are formed on the outer peripheral surface thereof. At the same time, it is structured so as to be supported by a support shaft implanted in the swing arm, and on the other hand, a ball hole penetrating the support shaft in the radial direction is formed, and a steel ball and a spring member are accommodated in the ball hole. The steel ball is moved inside the planetary gear by the elasticity of the spring member. Characterized in that so as to elastically contact to the surface.

  The invention according to claim 2 is rotatably supported on the side plate of the lock box, and forms an operating arm that engages with a dead bolt and protrudes and retracts from the front plate of the lock box. A dead cam connected to the inner cylinder, a sector gear coaxially and integrally connected to the dead cam, and at the time of locking / unlocking, it rotates in the locking direction or in the unlocking direction opposite to the locking / unlocking signal. A micromotor, a differential gear device connected to the output shaft of the micromotor via a speed reducer, a positional relationship such that the planetary gear is sandwiched along the trajectory of the planetary gear of the differential gear device, and Locking receiving gears and unlocking receiving gears arranged with a space where the planetary gears can move freely, a locking driven gear train connecting the locking receiving gears and the sector gears, and the unlocking receiving gears and sectors Connect the gear An unlocking driven gear train, so that the module and the number of teeth of the locking receiving gear and the unlocking receiving gear can be locked and unlocked by dead bolts within one rotation of the gears. And setting the tooth width of at least one tooth of the locking receiving gear and the unlocking receiving gear larger than the other teeth to form a protruding tooth, and when the locking or unlocking operation is completed, The release tooth pushes the swing arm of the differential gear device in the radial direction to divide the gear train. The planetary gear is formed into a cylindrical shape, teeth are formed on the outer peripheral surface thereof, and the swing arm On the other hand, the inner peripheral portion of the planetary gear is pierced and a spring member that urges the planetary gear in the thrust direction is mounted on the pierced portion. It is characterized by that.

  The deadbolt control mechanism according to the first and second aspects of the present invention configured as described above is configured such that the steel ball is elastically contacted with the inner peripheral surface of the planetary gear by a spring member having a small spring constant, or the rotating shaft of the planetary gear Because the end of the direction can be elastically contacted with the support shaft or swing arm, the friction torque of the planetary gear does not change even if the sliding contact portion wears, and the dead bolt control mechanism can be operated reliably for a long time. You can expect.

  In addition, various effects such as a very simple configuration and extremely easy implementation are obtained.

  Friction torque is generated on the planetary gear of the operating gear device by a spring member having a small spring constant, so that the friction torque does not change greatly even if the sliding contact portion is worn slightly, so that the operating gear device can be reliably operated. Expected over a long period of time.

In the first embodiment, an embodiment of the invention described in claim 1 will be described with reference to FIGS.
Since the switching mechanism using the operating gear device that occupies most of the configuration of the present invention is described in Patent Document 1 and is well known, it will be briefly described.

  In FIG. 1, reference numeral 1 denotes an inner surface of a side plate of the lock box, and a first bevel gear 2 is attached to an output shaft of a micromotor fixed to the side plate 1.

  The first bevel gear 2 meshes with a second bevel gear 3 having a larger diameter than the first bevel gear 2, and a sun gear 4 that is a small-diameter spur gear is coaxially and integrally coupled to the second bevel gear 3. The first bevel gear 2 and the second bevel gear 3 constitute a speed reducer.

  One end of a swing arm 5 is pivotally supported on the rotation shafts of the second bevel gear 3 and the sun gear 4, and the planetary gear is rotatably supported on the other end of the swing arm 5. 6 meshes with the sun gear 4.

  The sun gear 4, the swing arm 5 and the planetary gear 6 constitute a known differential gear device 7.

  A locking receiving gear 8 and an unlocking receiving gear 9 are arranged along the trajectory of the planetary gear 6 around the sun gear 4.

  The locking receiving gear 8 and the unlocking receiving gear 9 are provided so as to be able to mesh with the planetary gear 6 with the planetary gear 6 sandwiched between them and with a space where the planetary gear 6 can move between them. ing.

  The locking receiving gear 8 and the unlocking receiving gear 9 are engaged with the sector gear 1 of the dead cam 13 via the first and second idle gears, respectively. The operating arm 15 formed integrally with the dead cam 13 controls a dead bolt (not shown) to project it from the lock box or retract it into the lock box.

  Here, the gear train from the locking receiving gear 8 to the sector gear 14 is generically referred to as a locking driven gear train 16, and the gear train from the unlocking receiving gear 9 to the sector gear 14 is generically referred to as an unlocking driven gear train 17. I will do it.

  Furthermore, the modules and the number of teeth of the locking receiving gear 8 and the unlocking receiving gear 9 are set so that the locking and unlocking operation of a dead bolt (not shown) can be completed within one rotation of these gears. .

  In addition, the locking receiving gear 8 and the unlocking receiving gear 9 are each provided with a protruding tooth 18. In the illustrated embodiment, vertical lines are drawn on the side surfaces of the protruding teeth in order to distinguish the protruding teeth from other teeth.

  Each protruding tooth 18 is formed by setting a tooth width of one tooth of a gear having bosses integrally provided on both sides to be larger than the others, and an extension portion of the tooth width is engaged with the swing arm 5. Match.

  Although this is not an essential component of the present invention, in the illustrated embodiment, the tip of the swing arm 5 is formed to be thin, and the swing arm is swung clockwise or counterclockwise for locking. When engaged with the receiving gear 8 or the unlocking receiving gear 9, the tip of the swing arm comes into contact with the outer peripheral surface of the boss of the first idle gear 11 as shown by the chain line in FIG. And excessive engagement of the receiving gear 8 (9) is prevented.

  On the other hand, as shown in FIG. 2, the planetary gear 6 according to the present invention is formed into a cylindrical shape as a whole, and the gear teeth are engraved below the outer peripheral surface.

  The planetary gear 6 is pivotally supported by a support shaft 19 that is planted on the lower surface of the swing arm 5.

  In order to prevent the planetary gear 6 from slipping downward, a flange is formed at the lower end of the support shaft 19 in the illustrated embodiment, but a retaining ring may be employed instead of this flange.

  A ball hole 21 is formed in the central portion of the support shaft 19 so as to penetrate the shaft 19 in the radial direction. Two spring members 22 serving as compression coil springs are sandwiched between the ball holes 21. Steel balls 23 and 23 are accommodated.

  The steel balls 23 and 23 are elastically contacted with the inner peripheral surface of the planetary gear 6 by the elastic force of the spring member 22, and the elastic force appropriately sets the specifications such as the wire diameter of the spring member. When 6 rotates the swing arm 5, the steel ball and the inner peripheral surface of the planetary gear do not slip, but after switching and the planetary gear meshes with the receiving gear, they slide against each other to drive the micromotor. Is transmitted to the dead cam 13.

  2 is configured such that the steel balls 23, 23 are disposed on both sides of the spring member 22, and only the steel balls are in sliding contact with the inner peripheral surface of the planetary gear. The steel ball may be discarded and the spring member may be slidably contacted at one end of the spring hole.

  In the deadbolt control mechanism according to the embodiment of the invention described in claim 1 configured as described above, when the sun gear 4 rotates the planetary gear clockwise or counterclockwise, the planetary gear 6 Without swinging around, the swing arm 5 is gripped and rotated in the same direction. After the switching is completed and the planetary gear meshes with the receiving gear, the planetary gear 6 slides around the support shaft and power To communicate.

  Then, for example, when the locking is completely performed, the protruding teeth 18 of the locking receiving gear 8 push the side edge of the swing arm 5 downward in FIG. 1, and the planetary gear 6 and the locking receiving gear 8 Is brought into a standby state indicated by a solid line in FIG. Needless to say, this operation is performed in the same manner when unlocking.

  FIG. 3 shows the structure of a planetary gear 6 according to an embodiment of the invention as set forth in claim 2. In this embodiment, the thick cylindrical portion of the planetary gear is formed in the shape of a serpentine cross section and penetrated into the bottom. A spring member 22 as a compression coil spring is elastically mounted on the punched-through portion.

  In this case, the spring member 22 biases the lower end surface of the planetary gear 6 so as to elastically contact the flange portion of the support shaft 19, and a friction torque is generated between the flange and the planetary gear.

  Since the operation of the deadbolt control mechanism according to the embodiment shown in FIG. 3 is the same as that shown in FIGS. 1 and 2, further detailed description is omitted.

  FIG. 4 shows another embodiment of the invention described in claim 2, in which the upper end portion of the planetary gear is greatly pierced so that the support shaft 19 is exposed, and this portion is made of a thin elastic material. A bamboo shoot spring 22 is mounted.

  As described above, the spring member is not limited to the compression coil spring, and various members, for example, a laminate of curved washers made of a thin elastic material may be employed.

  Since the operation of the deadbolt control mechanism according to the embodiment shown in FIG. 4 is the same as that shown in FIGS. 1 and 2, further detailed description is omitted.

The principal part side view of the deadbolt control mechanism by one Example of invention of Claim 1 is shown. The partial cross section side view of the planetary gear by one Example of invention of Claim 1. A partial cross-sectional side view of a planetary gear according to an embodiment of the invention as set forth in claim 2. A partial cross-sectional side view of a planetary gear according to another embodiment of the invention described in claim 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lock box 2 1st bevel gear 3 2nd bevel gear 4 Sun gear 5 Swing arm 6 Planetary gear 7 Actuation gear device 8 Locking receiving gear 9 Unlocking receiving gear 11 First idle gear 12 Second idle gear 13 Dead cam 14 Sector gear 15 Actuating arm 16 Locking driven gear train 17 Unlocking driven gear train 18 Extruding teeth 19 Support shaft 21 Ball hole 22 Spring member 23 Steel ball

Claims (2)

  A dead cam that is rotatably supported on the side plate of the lock box, engages with a dead bolt, and forms an operating arm that protrudes and retracts from the front plate of the lock box, and is connected to the inner cylinder of the cylinder lock, and the dead cam A sector gear that is coaxially and integrally coupled to the motor, a micromotor that rotates in the locking direction or in the unlocking direction according to the locking / unlocking signal during locking / unlocking, and the output shaft of the micromotor A differential gear unit connected via a speed reducer and a planetary gear moving locus of the differential gear unit, with a positional relationship such that the planetary gear is sandwiched, and at an interval at which the planetary gear can move freely Locking receiving gear and unlocking receiving gear, locking driven gear train connecting the locking receiving gear and sector gear, and unlocking driven gear train connecting the unlocking receiving gear and sector gear And the above The locking receiving gear and unlocking receiving gear module and the number of teeth are set so that the dead bolt can be locked and unlocked within one rotation of the gear, and the locking receiving gear and unlocking The tooth width of at least one tooth of the receiving gear is set larger than that of the other teeth to form a protruding tooth, and when the locking or unlocking operation is completed, the protruding tooth has a radius on the swing arm of the differential gear unit. The planetary gear is formed into a cylindrical shape, and teeth are formed on the outer peripheral surface of the planetary gear. The shaft is supported by a support shaft installed in the swing arm. On the other hand, a ball hole penetrating the support shaft in the radial direction is formed, and a steel ball and a spring member are accommodated in the ball hole, and the steel ball is elastically applied to the inner peripheral surface of the planetary gear by the elasticity of the spring member. Motor drive characterized by contact Electric lock of the dead bolt control mechanism.   A dead cam that is rotatably supported on the side plate of the lock box, engages with a dead bolt, and forms an operating arm that protrudes and retracts from the front plate of the lock box, and is connected to the inner cylinder of the cylinder lock, and the dead cam A sector gear that is coaxially and integrally coupled to the motor, a micromotor that rotates in the locking direction or in the unlocking direction according to the locking / unlocking signal during locking / unlocking, and the output shaft of the micromotor A differential gear unit connected via a speed reducer and a planetary gear moving locus of the differential gear unit, with a positional relationship such that the planetary gear is sandwiched, and at an interval at which the planetary gear can move freely Locking receiving gear and unlocking receiving gear, locking driven gear train connecting the locking receiving gear and sector gear, and unlocking driven gear train connecting the unlocking receiving gear and sector gear And the above The locking receiving gear and unlocking receiving gear module and the number of teeth are set so that the dead bolt can be locked and unlocked within one rotation of the gear, and the locking receiving gear and unlocking The tooth width of at least one tooth of the receiving gear is set larger than that of the other teeth to form a protruding tooth, and when the locking or unlocking operation is completed, the protruding tooth has a radius on the swing arm of the differential gear unit. The planetary gear is formed into a cylindrical shape, and teeth are formed on the outer peripheral surface of the planetary gear. The shaft is supported by a support shaft installed in the swing arm. On the other hand, a dead bolt of a motor-driven electric lock characterized in that the inner peripheral portion of the planetary gear is wound and a spring member that urges the planetary gear in the thrust direction is elastically mounted on the wound portion. Control mechanism.

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