Patent Application
20220064993
The present invention relates to a transmission structure of a rotary shaft of an electronic lock which is rotated in 90 degrees to unlock the electronic lock quickly.
A conventional electronic lock contains a rotatable knob including a grip portion, and the grip portion has a stem extending from an end thereof. The stem has a cross orifice defined on a distal end thereof so that the stem is rotatably inserted in the rotatable knob to unlock/lock a door. The electronic lock also contains a motor having a fixing portion connected with a drive wheel; a driven wheel having a central extension connected with the stem of the rotatable knob, a tooth face surrounding a peripheral side of the driven wheel and meshed with the driven wheel, and a protrusion extending from a bottom of the driven wheel and driven by the driven wheel to touch a first touch portion or a second touch portion leftward or rightward.
However, when the motor is switched to rotate in a clockwise direction or a counterclockwise direction, a key is rotated 360 degrees to unlock or unlock the conventional electronic lock troublesomely.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary object of the present invention is to provide a transmission structure of a rotary shaft of an electronic lock which is capable of overcoming the shortcomings of the conventional electronic lock. For example, when the motor is switched to rotate in a clockwise direction or a counterclockwise direction, a key is rotated 360 degrees to unlock or unlock the conventional electronic lock troublesomely
To provide above-mentioned objects, a transmission structure of a rotary shaft of an electronic lock provided by the present invention contains: a drive unit including a holding plate, a motor, a worm, and a driven wheel; a transmission unit including a guide element, a movable element, a resilient element, a retainer, and an acting element; a frame, and a connection seat.
Thereby, when the electronic lock drives the worm by using the motor to actuate the driven wheel, the two protrusions of the driven wheel force the two opposite extensions of the guide element by way of the two arcuate fringes to push the movable element, and the two opposite extensions of the guide element are located on the two flat zones of the driven wheel so that the movable element moves forward to press the resilient element, and the rotary shaft of the electronic lock is rotated in the 90 degrees to unlock the electronic lock quickly.
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.
With reference to
the holding plate 11 includes an externally threaded portion 111 formed on a predetermined position thereof, and the holding plate 11 includes a fixing orifice 113 defined therein, the driven wheel 14 includes an internally threaded orifice 145 corresponding to and connected with the externally threaded portion 111 of the holding plate 11, two protrusions 141 extending from a surface of the driven wheel 14 and 90 degree is defined between the two protrusions 141, two flat zones 143 formed between the two protrusions 141, two arcuate fringes 142 formed on the two protrusions 141 opposite to the two flat zones 143, and a tooth section 144 formed on a peripheral side of the driven wheel 14 and meshing with the worm 121 which extends from an end of the motor 12, such that the motor 12 drives the worm 121 to urge the tooth section 144 of the driven wheel 12 to rotate;
a transmission unit 20 mounted on a surface of the drive unit 10, and the transmission unit 20 includes a guide element 25, a movable element 24, a resilient element 23, a retainer 22, and an acting element 21, wherein the guiding element 25 has a central orifice 252, the movable element 24 has a guiding orifice 242 corresponding to the central orifice 252, the acting element 21 has a slidable post 214 corresponding to the central orifice 252 and the guiding orifice 242, and the slidable post 214 has a stem 216 extending from an end thereof so that the slidable post 214 passes through the guiding orifice 242 of the movable element 24 and the central orifice 252 of the guide element 25, wherein the acting element 21 further has an engagement rib 215 formed on an end thereof, such that after the slidable post 214 of the acting element 21 is inserted into the fixing orifice 113 of the holding plate 11 via the central orifice 252 and the guiding orifice 242, the retainer 22 is engaged with the engagement rib 215 of the slidable post 214, and the guide element 25 and the movable element 24 are positioned in the slidable post 214 of the acting element 21, wherein the actuating element 21 has a driving segment 211 formed on an end thereof, a locking portion 213 defined on a center of a surface of the driving segment 211, and two opposite extensions 251 extending outward from an outer wall of the guide element 25, wherein the two extensions 251 are mounted on the two flat zones 143 of the driven wheel 14, and the movable element 24 has multiple columns 241 extending from a first end thereof and facing the actuating element 21, and the actuating element 21 has multiple receiving holes 212 defined on the driving segment 211 and corresponding to the multiple columns 241, such that the multiple columns 241 are slidably inserted into the multiple receiving holes 212, and the movable element 24 is fitted with the resilient element 23 relative to the driving segment 211, and a second end of the movable element 24 abuts against the guide element 25;
a frame 30 including a defining orifice 31 formed on a center thereof, and the frame 30 being welded with the holding plate 11, wherein the defining orifice 31 is aligned with the transmission unit 20;
a connection seat 40 being received in the defining orifice 31 of the frame 30 and including a retaining portion 42 extending from an end thereof, such that after the connection seat 40 is received in the defining orifice 31 of the frame 30, the retaining portion 42 of the locking seat 40 is engaged with a fastening ring 43.
Preferably, the frame 30 further includes a shell A1 formed on an outer wall thereof and a button unit A2 arranged on the shell A1.
When the electronic lock A0 drives the worm 121 by using the motor 12 to actuate the driven wheel 14, the two protrusions 141 of the driven wheel 14 force the two opposite extensions 251 of the guide element 25 by way of the two arcuate fringes 142 to push the movable element 24, and the two opposite extensions 251 of the guide element 25 are located on the two flat zones 143 of the driven wheel 14 so that the movable element 24 moves forward to press the resilient element 24, and the rotary shaft of the electronic lock is rotated in the 90 degrees to unlock the electronic lock quickly.
While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
