Electronic door lock with lever handle lock structure

Abstract

To provide an electronic door lock with a lever handle lock structure that solves the problem of short battery life.SOLUTION: This electronic door lock with a lever handle lock structure does not require troublesome operation of a start switch by providing a recess on the periphery of the lock plate 5, causing a microswitch 33 to activate an electronic circuit immediately after starting rotation of a lever handle 21 on the outside or inside of a room in an unlocking direction, before the lock lever is contacted, and causing the lock lever to be released upon verification, allowing the door to be unlocked. Furthermore, even if frictional wear of the lock case itself increases, a biasing spring 34 is provided to maintain a normal position so that the lever handle 21 on the outside or inside of the room will not tilt and cause the switch to malfunction.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] This invention relates to an electronic door lock that solves existing problems in a mechanism that locks and unlocks using communication such as Bluetooth in the case of a battery-powered electronic circuit in a door lock equipped with a lever handle lock structure that can be locked by preventing the lever handle from being lowered. [Background technology]

[0002] Existing mechanisms for locking and unlocking door locks with lever handle locking structures via communication include operating a switch or lightly tapping the door to activate the electronic circuit through vibration, or passing a weak current through the electronic circuit to activate it and then locking or unlocking it when verified via communication such as Bluetooth. However, there was a need to solve problems such as the need for a two-step operation of operating the lever handle after operating a switch or lightly tapping the door, and the short battery life caused by passing a weak current.

[0003] Furthermore, since this is a mechanism for locking the outer lever handle 21 or the inner lever handle 25, it is necessary to increase the torque strength of the round seat portion, which requires the round seat 24 to be made of metal, which tends to make this mechanism expensive, so there was a demand for an inexpensive configuration.

[0004] Based on this background, there has been a search for a new electronic door lock with a lever handle locking structure that does not require the cumbersome operation of a start switch and has a locking / unlocking mechanism that does not malfunction when the lever handle is tilted, and further, an electronic door lock that allows the lever handle locking mechanism and round seat to be maintained as inexpensively as possible. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2018-111941 Summary of the Invention [Problem to be solved by the invention]

[0006] The object of the present invention is to provide an electronic door lock that locks and unlocks by providing a recess on the circumferential surface of the lock plate 5 and a microswitch 33 that activates when the lever handle 21 on the outside of the room or the lever handle 25 on the inside of the room is started to be turned in the unlocking direction, before it comes into contact with the lock lever 10, activating the electronic circuit and simultaneously with verification, displacing the lock lever 10, thereby enabling unlocking, in a door lock with a lever handle lock structure in which the lever handle cannot be turned when the lock bar 10 is lowered because the lock lever 10 blocks the turning.

[0007] Another object of the present invention is to provide an electronic circuit characterized by forming a base plate 6' with an arm Q on the base plate 6, thereby extending the radius that receives torque and reducing the torque applied to the pulling foot of the round seat 24.

[0008] The locking structure of the lever handle in the electronic door lock of this invention is such that the rotation of the motor 7 is transmitted to the worm wheel 9 via the worm gear, and when the worm wheel 9 rotates forward or backward, the lock lever 10 moves up and down. The square core of the lever handle 21 is inserted into the square hole in the center of the lock plate 5, and the lock plate 5 and the outside lever handle 21 rotate together. When the groove G2 of the lock plate 5 is aligned with the groove G1 of the base plate 6 and the groove G3 of the support plate 4, the lock lever 10 descends. When the lock lever 10 is in the descending state, even if you try to turn the outside lever handle 21, the lock lever 10 blocks it and the lever handle 21 cannot be turned. Conversely, when the lock lever 10 rises, the prevention of the lever handle 21 from rotating is released, and the lever handle 21 can be turned.

[0009] The lever handle lock structure of the electronic door lock of this invention is characterized in that in the unlocked state, when a locking signal is received while the lever handle 21 is being manually operated, the worm wheel 9 rotates counterclockwise, attempting to lower the lock lever 10, but because it does not enter the groove G2 of the lock plate 5, the lock lever spring 11 opens, and a biasing force is applied between the pin B of the lock lever 10 and the pin D of the worm wheel 9.

[0010] The lever handle lock structure of the electronic door lock of this invention is characterized in that when a release signal is received while a human hand is applying force to the lever handle 21 in the locked state, the worm wheel 9 rotates clockwise, attempting to raise the lock lever 10, but since the lock lever 10 is pinched in the groove G2 of the lock plate 5 and cannot be raised, the lock lever spring 11 opens, and a biasing force is applied between the pin B of the lock lever 10 and the pin D of the worm wheel 9. [Effects of the Invention]

[0011] In the lever handle type latch lock of this invention, when the lever handle is lowered, the latch is retracted and the lock is released, and when the door is closed, the latch fits into the strike (latch receiver) and the door closes automatically.

[0012] In the electronic door lock of this invention, as soon as the lever handle 21 on the outside of the room or the lever handle 25 on the inside of the room is turned in the unlocking direction, the microswitch 33 operates and the electronic circuit starts before the lock lever 10 comes into contact, and the lock lever 10 is released and unlocked at the same time as verification, eliminating the need for a cumbersome start-up switch operation.

[0013] However, as the number of times the outside-room lever handle 21 or the inside-room lever handle 25 is used increases, the lock case itself will become loose due to friction wear, etc., and it is thought that the microswitch 33 will be in an on state before the lever handle 21 or 25 is operated, resulting in a malfunction. Therefore, the electronic door lock with the lever handle lock structure of this invention is characterized in that the biasing spring 34 is attached to the lock plate 5 to maintain the normal position (S-line horizontal), so that even if the friction wear of the lock case itself increases, the outside-room lever handle 21 or the inside-room lever handle 25 will not tilt and the switch will not malfunction.

[0014] In the electronic door lock with the lever handle lock structure of this invention, the lock unit such as the base plate 6 has the pull foot of the round seat 24 made of metal, and is made to withstand torque strength by tightening the lock unit fixing screw 19. However, by forming the base plate 6 into a base plate 6' with an arm Q attached to the base plate 6, the radius that receives torque is extended, and the torque applied to the pull foot of the round seat 24 is reduced, which makes it possible to make the round seat 24 from resin, making it cheaper.

[0015] An electronic door lock equipped with the lever handle lock structure of this invention can be combined with various devices such as smartphones and authentication devices that use biometric authentication or PIN number authentication. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is an exploded perspective view showing a lever handle mounting portion for mounting the components of the present invention. [Figure 2] 10A and 10B are a side perspective view and a front perspective view showing a state in which the lock lever is in an upward position. [Figure 3] 10A and 10B are a side perspective view and a front perspective view showing a state in which the lock lever is in a lower position. [Figure 4] FIG. 4 is a perspective view showing the relationship between the lever handle and the lock plate. [Figure 5]FIG. 2 is a perspective view showing the relationship between a support plate, a base plate, and a lock plate. [Figure 6] FIG. 10 is a perspective view showing the relationship between the three plates and the lock lever when the lock lever is lowered; [Figure 6A] 1 discloses a base plate 6' having arms Q, which are a new shape of the present invention (FIG. 11). [Figure 7] 6A, the support plate 4 is shifted to provide an exploded perspective view in which the microswitch 33, the biasing spring 34, etc. can be easily seen. [Figure 8] 10 is a front perspective view showing a state in which the biasing spring 34 biases the lever handle 21 and maintains the normal position. [Figure 9] 10 is a front perspective view showing a state in which the lever handle 21 is rotated to the unlock position and the biasing spring 34 is open. FIG. [Figure 10] FIG. 7 is a front view showing the old shape of the base plate 6 in FIG. 6. [Figure 11] FIG. 6B is a front view showing a new shape of the base plate 6' of FIG. 6A. DETAILED DESCRIPTION OF THE INVENTION

[0017] Next, an embodiment of an electronic door lock having a lever handle lock structure of the present invention will be described. 1 shows an exploded perspective view of the lever handle lock assembly of the present invention being attached to a door. Lever handle 21 is attached to lock case 24 of door 23 from the outside of the room via round base 24, and lever handle 25 is attached from the inside of the room via lever bushing 1 and unit cover 3 with lever handle screw 26.

[0018] Furthermore, to explain the operation of the lock lever 10, the rotation of the motor 7 is transmitted to the worm gear 8, which then drives the lock lever spring 11, which is journaled on the worm wheel 9, with the pin B of the lock lever 10 being supported at the arm tip A of the lock lever spring 11, and the pin D of the worm wheel 9 being held at the base C. When the worm wheel 9 rotates forward or backward, the lock lever 10 moves up and down.

[0019] FIG. 2 shows the state in which the lock lever 10 is in the upper position, and when the worm wheel 9 rotates counterclockwise, the lock lever 10 starts to move down.

[0020] FIG. 3 shows the state in which the lock lever 10 is in the downward position, and when the worm wheel 9 rotates clockwise, the lock lever 10 begins to rise.

[0021] The operation of preventing and releasing the rotation of the lever handle will now be described. The square core E of the lever handle 21 is inserted into the square hole F in the center of the lock plate 5 inserted between the base plate 6 and the support plate 4 (Fig. 4), and the lock plate 5 and lever handle 21 are structured to rotate approximately 35 degrees together. When the groove G2 of the lock plate 5 is aligned with the groove G1 of the base plate 6 and the groove G3 of the support plate 4 (Fig. 5), the lock lever 10 descends (Fig. 6).

[0022] Fig. 6A is an improved view of a base plate 6' compared to Fig. 6, which shows a known base plate 6, and Fig. 7 is a view in which the support plate 4 has been shifted from Fig. 6A to make it easier to see the microswitch 33, biasing spring 34, etc. A recess is provided on the circumferential surface of the lock plate 5, and the microswitch 33 operates when the outside-room lever handle 2121 or inside-room lever handle 25 is rotated in the unlocking direction, before it comes into contact with the lock lever 10, activating the electronic circuit, which simultaneously disengages the lock lever 10 and unlocks the door, eliminating the need for a cumbersome activation switch.

[0023] However, as the number of times the outside room lever handle 21 or the inside room lever handle 25 is used increases, the lock case itself will become loose due to friction wear, etc., and it is thought that the microswitch 33 will be in an on state before the outside room lever handle 21 or the inside room lever handle 25 is operated, causing it to malfunction. Therefore, to prevent the outside room lever handle 21 or the inside room lever handle 25 from tilting and causing the switch to malfunction even if the lock case itself becomes worn by friction, a biasing spring 34 is provided to maintain the normal position (horizontal S line) (Figure 8).

[0024] Figure 7 shows that the locking unit such as the base plate 6 has the pull foot of the round seat 24 made of metal, and is designed to withstand torque strength by tightening the locking unit fixing screw 19, but by providing the base plate 6 with an arm Q to make the base plate 6', the radius that receives torque is extended and the torque applied to the pull foot of the round seat 24 is reduced, making it possible to make the round seat 24 from resin, which makes it cheaper.

[0025] Figure 8 shows a state diagram in which the spring 34 biases the lever handle 21 to maintain its normal position, representing a torque load position of 100 mm. For example, if you hold the outside lever handle 21 or the inside lever handle 25 and try to turn it with 50 kg at a radius of 100 mm, in the case of the old shape of the base plate 6 (Figure 10), the torque applied to the pull foot of the round base 24 is 147 kg because it is supported by the pull foot of the round base 24 and is received by a radius R of 17 mm (T part).

[0026] Figure 9 shows the state in which the lever handle 21 has been rotated to the unlocked position and the spring is open. In addition, in the case of the new shape of the base plate 6' (Figure 11), torque is applied to the radius R70 mm (part U) of the arm Q, so it can hold 71.4 kg, and the force applied to the pulling foot part (part T') of the round base 24 is almost zero.

[0027] When the lock lever 10 is in the lowered state, even if an attempt is made to turn the lever handle 21, the lock lever 10 blocks the rotation and the lever handle 21 cannot be turned. Conversely, when the lock lever 10 is raised, the rotation prevention of the lever handle 21 is released and the lever handle 21 can be turned.

[0028] This section explains what happens when a locking signal is received while a person is operating the lever handle 21. If the lever handle 21 is being operated by hand when a locking signal is received, the worm wheel 9 rotates counterclockwise, attempting to lower the lock lever 10, but it does not enter the groove G2 of the lock plate 5. As a result, the lock lever spring 11 opens, and a biasing force is applied between the pin B of the lock lever 10 and the pin D of the worm wheel 9.

[0029] When the lever handle 21 is released, the groove G2 of the lock plate 5 moves upward, so the lock lever 10 moves in and the rotation of the lock plate 5 is prevented.

[0030] When an unlock signal is received while the lever handle 21 is being applied by hand, the worm wheel 9 rotates clockwise, attempting to raise the lock lever 10, but since the lock lever 10 is pinched in the groove G2 of the lock plate 5 and cannot rise, the lock lever spring 11 opens, and a biasing force is applied between the pin B of the lock lever 10 and the pin D of the worm wheel 9.

[0031] An emergency release lever 2 is provided on a unit cover 3 on the inside of the door, and in order to release the lock in an emergency, the release lever 2 is slid downward to mechanically release the lock on a lever handle 25 on the inside of the room, allowing the door 23 to be opened. [Explanation of symbols]

[0032] 1 Lever bush 2 Release lever 3 Unit cover 4. Support plate 5. Lock plate 6···Base plate (old shape) 6'···Base plate (new shape) 7. Motor 8. Worm gear 9. Worm Wheel 10 Lock lever 11 Lock lever spring 12 Gear return spring 13. Unlock spring 14 Gear case 15··Module base 16··Module cover 17··Module cover fixing screw 18··Base plate fixing screw 19 Lock unit fixing screw 20 Module base mounting screw 21. Exterior lever handle 22··Lock Case 23 Door 24··Round seat 25··Inside lever handle 26 Lever handle fixing screw 27··Thumb turn 28··Round seat pull leg 29. Reading device 30··Motor power cable 31. Hook 32··Motor power connector 33 Microswitch 34. Bias spring 34-1··Left arm of biasing spring 34-2 Right arm of the biasing spring A···Tip of the arm of the lock lever spring B Lock lever pin C···Base D Worm wheel pin E··· Lever handle square core F...Square hole in the center of the lock plate G1 Groove in base plate G2 Lock plate groove G3 Support plate groove H... Release lever tip arm J···Gear case hole K···Slide direction L...Following direction M···Engagement N···Lock plate 5 protrusion P···Support plate 4 protrusion Q···Baseplate 6' Arm S...horizontal line Screw fixing part of the pull foot of the T··· round base 24 U....Screw fixing part at the tip of arm Q

Claims

1. The rotation of the motor 7 is transmitted to the worm gear 8, and the lock lever spring 11, which is journalled to the worm wheel 9 by the worm gear 8, follows. The pin of the lock lever 10 is supported at the tip of the arm of the lock lever spring 11, sandwiched between the pin of the worm wheel 9 at the base. When the worm wheel 9 rotates forward or backward, the lock lever 10 moves up and down. The square core of the lever handle 21 is inserted into the square hole in the center of the lock plate 5 inserted between the base plate 6 and the support plate 4, and the lock plate 5 and the lever handle 21 rotate together. When the grooves of the lock plate 5 are aligned with the grooves of the base plate 6 and the support plate 4, the lock lever 10 descends. When the lock lever 10 is in the descending state, the lever handle In an electronic door lock with a lever handle lock structure in which even if an attempt is made to turn the lever handle 21, the lock lever 10 blocks it and the lever handle 21 cannot be turned. A recess is provided on the periphery of the lock plate 5, and the microswitch 33 activates the electronic circuit immediately after the outside lever handle 21 or the inside lever handle 25 begins to rotate in the unlocking direction, before it comes into contact with the lock lever 10, causing the lock lever 10 to move away from the lock lever 10 upon verification, allowing the lock to be unlocked.Furthermore, an energizing spring 34 is provided on the lock plate 5 to maintain the normal position (S-line horizontal) so that the outside lever handle 21 or the inside lever handle 25 will not tilt and cause the switch to malfunction even if friction wear on the lock case itself increases.

2. An electronic door lock equipped with the lever handle lock structure described in claim 1, characterized in that the lock unit such as the base plate 6 has a pull foot portion of the round seat 24 made of metal and is made to withstand torque strength by tightening the lock unit fixing screw 19, but by forming the base plate 6 into a base plate 6' with an arm Q attached to the base plate 6, the radius that receives torque is extended and the torque applied to the pull foot portion of the round seat 24 is reduced.

3. An electronic door lock equipped with the lever handle lock structure described in claim 1, characterized in that an emergency release lever 2 is provided on the unit cover 3 on the inside of the door, and in the event of an emergency, this release lever 2 can be slid downward to mechanically unlock the lever handle 25 on the inside of the room and open the door 23.

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