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WO1997041323A1 - Ensemble moteur pour verrou electronique - Google Patents

Ensemble moteur pour verrou electronique Download PDF

Info

Publication number
WO1997041323A1
WO1997041323A1 PCT/US1997/007674 US9707674W WO9741323A1 WO 1997041323 A1 WO1997041323 A1 WO 1997041323A1 US 9707674 W US9707674 W US 9707674W WO 9741323 A1 WO9741323 A1 WO 9741323A1
Authority
WO
WIPO (PCT)
Prior art keywords
split
gear
drive shaft
spring pin
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1997/007674
Other languages
English (en)
Inventor
Don K. Fullmer
Larry D. Fullmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WINFIELD LOCKS Inc DOING BUSINESS AS COMPUTERIZED SECURITY SYSTEMS
Original Assignee
WINFIELD LOCKS Inc DOING BUSINESS AS COMPUTERIZED SECURITY SYSTEMS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WINFIELD LOCKS Inc DOING BUSINESS AS COMPUTERIZED SECURITY SYSTEMS filed Critical WINFIELD LOCKS Inc DOING BUSINESS AS COMPUTERIZED SECURITY SYSTEMS
Priority to AU29979/97A priority Critical patent/AU2997997A/en
Publication of WO1997041323A1 publication Critical patent/WO1997041323A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1635—Use of special materials for parts of locks of plastics materials
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/002—Geared transmissions
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/0026—Clutches, couplings or braking arrangements
    • E05B2047/0031—Clutches, couplings or braking arrangements of the elastic type

Definitions

  • This invention relates to a motor drive assembly for an electronic lock and, more particularly, to an arrangement for coupling a drive shaft to a gear within an electronic lock.
  • Electronic deadbolt locks sometimes use a drive gear connected to the drive shaft of a DC motor to control movement of a deadbolt latch between extended and retracted positions.
  • the motors used in a typical electronic lock does not supply a great deal of torque, the drive gear must nonetheless be connected to the drive shaft so as to prevent relative slippage therebetween under the torque levels expected for the particular application.
  • a common problem is finding a reliable, cost-effective means of eliminating the relative slippage that can occur between these two components.
  • Fig. 1 it is known in the art to make a motor drive assembly for an electronic lock using an annular brass sleeve between the drive shaft and gear.
  • This type of prior art motor drive assembly there are problems with this type of prior art motor drive assembly.
  • Second, this type of coupler assembly is unreliable and costly to manufacture.
  • Another type of coupling technique involves keying the gear onto the drive shaft.
  • the coupling utilizes either slots or protrusions to interact with similar mating structures in the shaft and/or gear to prevent relative slippage.
  • An example of such a coupling is disclosed in United States Patent No. 4,774,852 to Matt.
  • the Matt patent shows a coupling ring with an axial slot interconnected to a cam by way of a protrusion from the cam that extends into the slot in the ring.
  • This type of design relies on the protrusion - slot interconnection to prevent relative slippage.
  • these types of coupler and gear connections are more expensive to use because they are specially machined and require special alignment during assembly.
  • the invention is carried out by using a split- spring pin that couples the drive shaft to the plastic gear.
  • the split-spring pin comprises a cylindrical band of metal having an axial split that forms two abutments extending the length of the pin.
  • the split-spring pin is disposed onto the distal end of a drive shaft and the plastic gear is press-fit over the split-spring pin.
  • Figure 1 is a diagrammatic view of a prior art electronic lock that utilizes a motor drive assembly to move a deadbolt latch between retracted and extended positions;
  • Figure 2 is a cross section of the bull gear of the prior art electronic lock of Fig. 1;
  • Figure 3 is a cross section of the thumbturn and thumbturn shaft of the prior art electronic lock of Fig. 1;
  • Figure 4 is a partially exploded view of a preferred embodiment of the motor drive assembly of the present invention as it would be incorporated into the electronic lock of Fig. 1; and Figure 5 is an end view of the motor drive assembly of Fig. 4.
  • a prior art electronic lock is generally shown at 10 in Fig. 1.
  • the electronic lock 10 has a motor drive assembly 12 that includes a DC electric motor 14, a plastic worm gear 16, and an annular metal sleeve 18.
  • Electric motor 14 has a drive shaft 20 that has a circular cross section and is coupled to worm gear 16 by way of metal sleeve 18.
  • sleeve 18 is placed over the distal end of drive shaft 20 and glued to the drive shaft 20.
  • Worm gear 16 has a cylindrical bore and is press-fit and glued onto the sleeve 18.
  • Electronic lock 10 also includes a thumbturn 26 having a shaft 28 that drives a standard tailpiece (not shown) which in turn drives a deadbolt latch 30 between an extended (locked) and a retracted (unlocked) position.
  • thumbturn 26 permits deadbolt latch 30 to be manually moved between the retracted and extended positions.
  • Worm gear 16 is coupled to shaft 28 and therefore to deadbolt latch 30 by way of a spur gear 32, a bull gear 34, and a slip clutch 36.
  • slip clutch 36 comprises an O-ring 38 that is seated within complementary, annular grooves 28a and 34a that extend about the outer circumference of shaft 28 and about the inner cylindrical surface of bull gear 34, respectively.
  • Slip clutch 36 allows slippage between shaft 28 of thumbturn 26 and bull gear 34 when sufficient torque is applied to thumbturn 26.
  • Gears 16, 32, and 34, slip clutch 36, shaft 28, and the tailpiece all define a drive train extending between motor 14 and deadbolt latch 30.
  • electronic lock 10 also includes an electronic control circuit 40 that provides operating power to motor 14.
  • circuit 40 can be operated to cause rotation of drive shaft 20 in either the clockwise or counterclockwise direction. In this way, circuit 40 can provide automatic control of the movement of deadbolt latch 30 between its extended and retracted positions.
  • an electric motor 14' has a drive shaft 20' that has a circular cross section and is coupled to a worm gear 16' by way of a split-spring 18.
  • Split-spring pin 18 is a cylindrical band of metal having an axial split that forms two abutments 22,24 extending the length of the pin. This gives it a generally C-shaped cross section. In its unflexed state, split-spring pin 18 has an inner diameter that is less than the outer diameter of drive shaft 20'.
  • Worm gear 16' has a cylindrical bore 16a' and is press-fit onto the split-spring pin 18. Prior to assembly of the worm gear onto split-spring pin 18, the inner diameter of the worm gear 16' is less than the outer diameter of the split-spring pin and drive shaft combination. Thus, gear 16' provides a radially inward force on split-spring pin 18 and drive shaft 20' once it is press-fit onto pin 18.
  • Split-spring pin 18 provides a simple and cost effective coupling between drive shaft 20' and worm gear 16'. Although not wishing to be limited to any specific theory of operation, it is believed that the radially inward pressure exerted by gear 16' on pin 18 and by pin 18 on shaft 20' provides sufficient friction to permit shaft 20' to drive gear 16' without relative slippage therebetween. It is also believed that when gear 16' is press-fit onto pin 18 at least a portion of abutments 22 ',24' embed themselves into the inner surface of gear 16'.
  • motor 14' its drive shaft 20', worm gear 16', and split spring pin 18 can be incorporated into lock 10 of Fig. 1 in lieu of motor drive assembly 12.
  • motor 14' is an SSK280SA-5V, manufactured by Mabuchi Motors of New York, N.Y.
  • Worm gear 16' is a nylon worm gear, such as a N8100, manufactured by Nylomatic of Fallsington, Pennsylvania.
  • Split-spring pin 42 is a 912-C ('/s" b Y V 2 ”) / manufactured by Hillman Fastener of Cincinnati, Ohio.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

L'invention concerne un verrou électronique (10) à pêne dormant, doté d'un ensemble moteur à moteur CC (14') et un arbre de commande correspondant (20') accouplé à une vis sans fin (16'). L'ensemble moteur comporte un dispositif d'accouplement à goupille ressort fendue (18) reliant l'arbre de commande (20') et la vis sans fin (16'). La goupille ressort fendue (18) comprend une bande cylindrique de métal présentant une fente axiale formant deux butées (22, 24) augmentant la longueur de ladite goupille (18). A l'état non fléchi, la goupille ressort fendue (18) présente un diamètre intérieur inférieur au diamètre extérieur de l'arbre de commande (20') de sorte que celle-ci puisse être adaptée sur l'extrémité distale dudit arbre (20'). De plus, la vis sans fin (16'), qui présente un diamètre intérieur inférieur au diamètre extérieur de l'ensemble goupille ressort fendue (18) et arbre de commande, est insérée à la force sur ledit ensemble. En fonctionnement, l'arbre de commande (20') et la vis sans fin (16') sont solidaires l'un de l'autre par la combinaison de la force radiale vers l'intérieur de la goupille ressort fendue (18) et de l'encastrement des butées (22, 24) de ladite broche dans la vis sans fin (16').
PCT/US1997/007674 1996-04-30 1997-04-29 Ensemble moteur pour verrou electronique Ceased WO1997041323A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29979/97A AU2997997A (en) 1996-04-30 1997-04-29 Motor drive assembly for an electronic lock

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1699996P 1996-04-30 1996-04-30
US60/016,999 1996-04-30
US74786496A 1996-11-13 1996-11-13
US08/747,864 1996-11-13

Publications (1)

Publication Number Publication Date
WO1997041323A1 true WO1997041323A1 (fr) 1997-11-06

Family

ID=26689324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/007674 Ceased WO1997041323A1 (fr) 1996-04-30 1997-04-29 Ensemble moteur pour verrou electronique

Country Status (2)

Country Link
AU (1) AU2997997A (fr)
WO (1) WO1997041323A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1098054A1 (fr) * 1999-11-05 2001-05-09 IKON AKTIENGESELLSCHAFT Präzisionstechnik Dispositif de blocage entrainé par moteur
US6641186B2 (en) * 2002-01-28 2003-11-04 Miao-Hsueh Tsai Combination of mounting plate and rose for door locks
CN110424823A (zh) * 2019-07-12 2019-11-08 浙江伟杰电子科技有限公司 一种柔性锁体离合装置
US11441333B2 (en) 2018-03-12 2022-09-13 Amesbury Group, Inc. Electronic deadbolt systems
US11634931B2 (en) 2017-04-18 2023-04-25 Amesbury Group, Inc. Modular electronic deadbolt systems
US11661771B2 (en) 2018-11-13 2023-05-30 Amesbury Group, Inc. Electronic drive for door locks
US11834866B2 (en) 2018-11-06 2023-12-05 Amesbury Group, Inc. Flexible coupling for electronic deadbolt systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015765A (en) * 1962-01-02 Variable capacitor
US3338604A (en) * 1965-05-25 1967-08-29 United Carr Inc Fastener for securing plastic members to a shaft
US4376254A (en) * 1981-06-10 1983-03-08 General Motors Corporation Annular molded article secured to a shaft
US4438962A (en) * 1981-10-02 1984-03-27 Emhart Industries, Inc. Alternate manually and electrically actuated bolt
US4885954A (en) * 1987-12-09 1989-12-12 Wanlass Bert R Door lock actuator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015765A (en) * 1962-01-02 Variable capacitor
US3338604A (en) * 1965-05-25 1967-08-29 United Carr Inc Fastener for securing plastic members to a shaft
US4376254A (en) * 1981-06-10 1983-03-08 General Motors Corporation Annular molded article secured to a shaft
US4438962A (en) * 1981-10-02 1984-03-27 Emhart Industries, Inc. Alternate manually and electrically actuated bolt
US4885954A (en) * 1987-12-09 1989-12-12 Wanlass Bert R Door lock actuator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1098054A1 (fr) * 1999-11-05 2001-05-09 IKON AKTIENGESELLSCHAFT Präzisionstechnik Dispositif de blocage entrainé par moteur
US6641186B2 (en) * 2002-01-28 2003-11-04 Miao-Hsueh Tsai Combination of mounting plate and rose for door locks
US11634931B2 (en) 2017-04-18 2023-04-25 Amesbury Group, Inc. Modular electronic deadbolt systems
US11441333B2 (en) 2018-03-12 2022-09-13 Amesbury Group, Inc. Electronic deadbolt systems
US11834866B2 (en) 2018-11-06 2023-12-05 Amesbury Group, Inc. Flexible coupling for electronic deadbolt systems
US11661771B2 (en) 2018-11-13 2023-05-30 Amesbury Group, Inc. Electronic drive for door locks
CN110424823A (zh) * 2019-07-12 2019-11-08 浙江伟杰电子科技有限公司 一种柔性锁体离合装置
CN110424823B (zh) * 2019-07-12 2022-02-08 浙江伟杰电子科技有限公司 一种柔性锁体离合装置

Also Published As

Publication number Publication date
AU2997997A (en) 1997-11-19

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