CN218293180U - Electronic lock - Google Patents

Abstract

The electronic lock of an embodiment includes a handle, a thumber attachment, a gear, a 1 st projection, and a 2 nd projection. The handle is for manual operation. The fingerspin attachment section is fixed to the handle by a rotation shaft. The gear has a surface facing a bottom surface of the handle and is disposed coaxially with the rotary shaft. The 1 st projection is provided on a bottom surface of the handle. The 2 nd projection is provided on a surface of the gear that faces a bottom surface of the handle, and is capable of abutting against the 1 st projection in a rotational direction.

Description

Electronic lock

Technical Field

The utility model relates to an electronic lock.

Background

There is an electronic lock that drives a dead bolt of a door using an electric thumbturn (see, for example, patent document 1). Further, there is an electronic lock that can be added to a thumbturn of an existing door (see, for example, patent document 2).

In an electronic lock of a type in which a finger turn device of an existing door is added, a finger turn device for manual operation is provided in order to manually unlock and lock the electronic lock when the electronic lock cannot be operated electrically due to exhaustion of a battery or the like. Further, if the motor and the gear are manually operated in a state in which they are engaged with the manual operation thumbturn, an excessive load is applied to the motor and the gear, which may cause damage or the like.

< Prior Art document >

< patent document >

Patent document 1 (Japanese patent application laid-open No. 2009-30426)

Patent document 2 (Japanese patent application laid-open No. 2016-148208)

SUMMERY OF THE UTILITY MODEL

< problems to be solved by the present invention >

However, the lost motion mechanism of the thumbturn device increases the number of parts and increases the size of the electronic lock, and this makes the mechanism design difficult for an add-on electronic lock whose installation location is limited. Further, the driving mechanism of the finger grip including the idling mechanism of the finger grip requires positional and rotational accuracy, and when a large torque is applied to the driving mechanism of the finger grip, it is difficult to improve the positional and rotational accuracy, which also makes it difficult to reduce the size.

In view of the above, an object of the present invention is to provide an electronic lock capable of improving the accuracy of position and rotation while reducing the number of parts.

< means for solving the problems >

In order to solve the above problems and achieve the object, an electronic lock according to one aspect of the present invention includes a handle, a finger grip connecting portion, a gear, a 1 st projection, and a 2 nd projection. The handle is for manual operation. The finger rotator connecting portion is fixed to the handle through a rotation shaft. The gear has a surface facing a bottom surface of the handle and is disposed coaxially with the rotary shaft. The 1 st projection is provided on a bottom surface of the handle. The 2 nd projection is provided on a surface of the gear that faces a bottom surface of the handle, and is capable of abutting against the 1 st projection in a rotational direction.

< effects of the utility model >

The utility model discloses an electronic lock of mode improves the precision of position and rotation when can reduce the spare part number.

Drawings

Fig. 1 is an external perspective view of an electronic lock according to embodiment 1.

Fig. 2 is an external perspective view of the electronic lock in a state where the top cover is removed.

Fig. 3 is an exploded perspective view (1) of main parts and peripheral parts connected to the handle.

Fig. 4 is an exploded oblique view (2) of the main part and the peripheral part connected to the handle.

Fig. 5 is an enlarged perspective view showing a gear structure from the drive side of the motor.

Fig. 6 is a perspective view showing an example of the configuration of the periphery of the switch operating panel.

Fig. 7 is a perspective view showing another example of the structure for operating the microswitch.

Fig. 8 is a flowchart (1) showing an operation example of embodiment 1.

Fig. 9 is a flowchart (2) showing an operation example of embodiment 1.

Fig. 10 is a diagram showing a structure of a handle in embodiment 2.

Fig. 11 is a diagram showing an example of arrangement of the potentiometer, the microswitch, and the magnetic sensor in embodiment 2.

Fig. 12 is a view showing a 1 st modification of the arrangement example of the potentiometer, the microswitch, and the magnetic sensor.

Fig. 13 is a schematic view showing a state where the electronic lock is installed on the door with the longitudinal direction thereof being the up-down direction.

Fig. 14 is a schematic view showing a state where the electronic lock is installed on the door with its longitudinal direction as the left-right direction.

Fig. 15 is a diagram showing a modification example 2 of the arrangement example of the potentiometer, the microswitch, and the magnetic sensor.

Fig. 16 is a diagram showing a switching structure of the microswitch in embodiment 2.

Fig. 17 is a perspective view of the switching structure shown in fig. 16 when viewed from the negative z direction side.

Fig. 18 is a perspective view of the switching structure shown in fig. 16, as viewed from the negative z-direction side.

Detailed Description

Hereinafter, an electronic lock according to an embodiment will be described with reference to the drawings. However, the present invention is not limited to the following embodiments. In addition, the dimensional relationship, the ratio, and the like of the elements in the drawings may be different from the actual ones. There may also be portions different in dimensional relationship or ratio to each other between the drawings. Note that the contents described in 1 embodiment or modification can be similarly applied to other embodiments or modifications in principle.

[ embodiment 1 ]

Embodiment 1 will be described with reference to fig. 1 to 9.

In the following description, the x direction, the y direction, and the z direction are perpendicular to each other. The x direction is a longitudinal direction of the electronic lock 1, and also refers to an arrangement direction of the rotator connecting part 9 and the motor 22. The y direction is a short side direction of the electronic lock 1 and is a direction along a main surface of the bottom case 7 or the like. The z direction is a direction in which the rotation axis of the rotator connecting portion 9 extends.

Fig. 1 is an external perspective view of an electronic lock 1 according to embodiment 1. The electronic lock 1 is configured to be added to a finger swing (not shown) of an existing door, and receives an operation instruction from a controller (not shown) such as a smartphone or a control panel in a wireless or wired manner to perform a corresponding operation (locking, unlocking, or the like). As a wireless system, bluetooth (registered trademark), wiFi, or the like is used.

In fig. 1, the electronic lock 1 has a substantially rectangular appearance with almost half of the rear surface removed, and the front surface is covered with a top cover 2. A thumbturn connecting part 9 for engaging with a thumbturn of an existing door, not shown, is provided on a portion of the back surface from which the door is removed. A handle 3 that can be manually operated by a user is provided on the top cover 2 at a position opposite to the finger grip connecting portion 9. The handle 3 includes a concave surface 3a orthogonal to the rotation axis of the handle 3, and a substantially half-moon-shaped knob portion 3b provided at the center of the concave surface 3 a. The shape of the handle 3 is not limited to the illustrated shape.

Fig. 2 is an external perspective view of the electronic lock 1 in a state where the top cover 2 is removed. In fig. 2, a gear 6 and the like are connected to the handle 3 and continue to the thumbturn connecting portion 9.

Fig. 3 and 4 are exploded perspective views of main components and peripheral components connected to the handle 3, with fig. 3 showing a state viewed from obliquely above (from the same viewpoint as fig. 1 and 2), and fig. 4 showing a state viewed from obliquely below. In fig. 3 and 4, a handle 3, a rotary shaft 4, a top case 5, a gear 6, a bottom case 7, a switch operation panel 8, and a thumbturn connecting unit 9 are arranged in this order from the top of the drawing. The finger rotation device connecting part 9 is composed of a circular plate 10, a rectangular plate 11, a circular plate 12, and a finger rotation device clamping part 13.

The switch operation panel 8 and the finger grip connecting portion 9 are fixed to the handle 3 via the rotating shaft 4, and the switch operation panel 8 and the finger grip connecting portion 9 rotate together with the handle 3. One end of the rotary shaft 4 is fixed to a hole 3f on the back side of the handle 3, and the other end of the rotary shaft 4 is fixed to a rectangular plate 11 of the finger rotator connecting portion 9 via a switch operating plate 8.

A cylindrical portion 3c is connected to the periphery of the concave surface 3a on the front side of the handle 3, and a potentiometer gear 3d is integrally formed around the lower end of the cylindrical portion 3 c. The surface of the handle 3 on the front side is exposed to the outside of the electronic lock 1, and it is preferable to use a material suitable for the appearance in consideration of the appearance. The potentiometer gear 3d is required to have mechanical strength and wear resistance, and a material suitable for this is preferably used. Therefore, the potentiometer gear 3d may be formed separately from the handle 3. The relationship with the potentiometer (28) will be described later. Further, a projection 3e is provided on the back side of the handle 3. The protrusion 3e may be formed separately from the handle 3, from the viewpoint of material selection.

A cylindrical portion 7a is provided at substantially the center of the bottom case 7, the inner circumferential surface of the cylindrical portion 7a constitutes a bearing for the rotary shaft 4, and the outer circumferential surface of the cylindrical portion 7a constitutes a bearing for the gear 6. The top case 5 and the bottom case 7 are combined in a state where the gear 6 is provided inside. Since the rotary shaft 4 is rotatably supported by 1 bearing through the inner peripheral surface of the cylindrical portion 7a of the bottom case 7, assembly errors are reduced compared to a structure in which the rotary shaft is supported by a pair of (2) bearings, and positional accuracy can be improved. Further, since the gear 6 is rotatably supported by the outer peripheral surface of the cylindrical portion 7a of the bottom case 7, the accuracy of the shaft interval with a spur gear (flat gear) (27) described later can be improved without being affected by the rotating shaft 4 when meshing with the gear 6.

The gear 6 has a projection 6a on a surface thereof facing the bottom surface of the handle 3, the projection being capable of coming into contact with a projection 3e on the back surface of the handle 3 in the rotational direction. The projection 3e of the handle 3 and the projection 6a of the gear 6 constitute a so-called lost motion mechanism, and when the gear 6 on the drive side rotates, the projection 6a abuts and presses against the projection 3e of the handle 3, and the handle 3 rotates as it rotates, and then the gear 6 is rotated in reverse by a predetermined angle, whereby a space is formed between the projection 6a and the projection 3e, and the handle 3 is manually rotated in reverse without being affected by the gear 6 on the drive side.

The switch operating plate 8 is substantially disc-shaped, and 8 projections 8a are provided at equal intervals on the outer periphery of the switch operating plate 8, for example. The switch operation panel 8 is configured to detect that the user has rotated the handle 3 by manual operation, and is used to control the sleep state in order to save power consumption and extend the battery life. Details will be described later.

Returning to fig. 2, the motor 22 is disposed on the base housing 21, and a driving force is transmitted from an output shaft of the motor 22 to the gear 6 through the worm 23, the worm wheel 24, \8230 \ 8230 \, and the spur gears 26 and 27 disposed in the bottom case 7. The potentiometer gear 29 on the bottom case 7 meshes with the potentiometer gear 3d of the handle 3.

Fig. 5 is an enlarged perspective view showing a gear structure from the drive side of the motor 22. In fig. 5, the driving side includes a worm 23 as a 1 st driving side gear fixed to an output shaft 22a of the motor 22, and a worm wheel 24 as a 2 nd driving side gear meshed with the worm 23. The drive side includes a spur gear 25 as a 3 rd drive side gear formed integrally with the worm wheel 24, a spur gear 26 as a 4 th drive side gear meshed with the spur gear 25, and a spur gear 27 as a 5 th drive side gear formed integrally with the spur gear 26 and meshed with the gear 6 (fig. 2 and the like).

A potentiometer gear 29 is fixed to the input shaft at the center of the thin and substantially rectangular potentiometer 28. The potentiometer 28 is a component for outputting an analog value (resistance value) corresponding to the angular position of the input shaft.

Fig. 6 is a perspective view showing a configuration example of the periphery of the switch operating panel 8. In fig. 6, a micro switch 16 is provided on the bottom surface side of the substrate 14 disposed inside the bottom surface of the bottom case 7 (fig. 3). In the bottom case 7, the arm portion 15 is rotatably supported by the shaft portion 15a, and the tip end of the arm portion 15 is biased toward the switch operation panel 8. Therefore, when the handle 3 is rotated in the clockwise direction or the counterclockwise direction by the manual operation of the user, the switch operation plate 8 is rotated in conjunction with the manual operation, and the protrusion 8a provided on the outer periphery of the switch operation plate 8 presses the tip of the arm portion 15 outward. Thereby, the outer surface of the arm portion 15 presses the actuator 16a of the micro switch 16, and the micro switch 16 is turned on (or off).

A circuit unit (electronic circuit) for realizing a communication function with a controller such as a smartphone or a control panel, a control function of the motor 22, and the like is mounted on the substrate 14.

Fig. 7 is a perspective view showing another example of the structure for operating the microswitch 16. In fig. 7, a plurality of (for example, 8) projections 3e are integrally provided on the outer periphery of the handle 3, and the micro switch 16 is provided on the substrate 17. When the handle 3 is rotated in the clockwise direction or the counterclockwise direction by the manual operation of the user, the projection 3e presses the actuator 16a of the micro switch 16, and the micro switch 16 is turned on (or off).

In fig. 7, a magnetic sensor 18 is provided on the substrate 17. The magnetic sensor 18 is a member that detects the proximity of a magnet provided on the original door, not shown, to determine whether the door is opened or closed. The same magnetic sensor is provided on the substrate 14 shown in fig. 6, but illustration thereof is omitted. In fig. 7, a substrate 19 is provided in addition to the substrate 17, and a circuit unit (electronic circuit) for realizing a communication function with a controller such as a smartphone or a control panel, a control function of the motor 22, or the like is mounted on the substrate 19.

Fig. 8 is a flowchart showing an operation example of the above embodiment 1, and is a processing example of a circuit unit in a case where an operation signal is received from a controller such as a smartphone or an operation disc.

In fig. 8, when the circuit portion of the electronic lock 1 receives an operation signal from the controller and starts processing, the circuit portion releases the sleep state (step S101). The sleep state is a state in which only the function responding to the limited state change such as the receipt of the operation signal from the controller or the turning on of the micro switch 16 is activated, and the other functions are stopped to suppress the power consumption. When the sleep state is released, the restricted function in the sleep state is changed to be active.

After the sleep state is released, the circuit unit reads the value of the potentiometer 28 (value corresponding to the rotation angle of the handle 3), acquires the current state (locked state, unlocked state, etc.), and records the current state in a nonvolatile memory or the like in the circuit unit (step S102).

Next, the circuit unit receives the operation content from the controller (step S103), and divides the process according to the operation content (step S104).

When the operation content relates to a process related to the setting (setting at step S104), the circuit unit determines whether the setting content is appropriate (step S105), and when the operation content is determined to be inappropriate (no at step S105), returns to receiving the operation content (step S103). The appropriate setting contents mean, for example, that there is no contradiction in the setting contents.

When the circuit unit determines that the setting content is appropriate (yes in step S105), the circuit unit performs a corresponding setting process (step S106). As the setting process, for example, the setting of the angular position and the direction of the electronic lock 1 is performed for the first time after the electronic lock is installed. More specifically, the angular position of the thumb turn of the existing door in each of the locked and unlocked states (whether the knob portion is oriented in the vertical direction or in the horizontal direction), the rotational direction (clockwise rotation or counterclockwise rotation) for switching to each of the locked and unlocked states, and the like are set, and the setting contents are recorded in a nonvolatile memory or the like in the circuit portion. The setting process includes a setting process of the electronic lock 1 after the 2 nd station, a setting process of the spare key, and the like.

Next, the circuit unit determines whether or not the setting is completed (step S107), and if it is determined that the setting is not completed (no in step S107), returns to the operation accepting content (step S103). When the circuit unit determines that the setting is completed (yes in step S107), the circuit unit shifts to the sleep state (step S114) and ends the process.

On the other hand, when the operation content is the lock command (lock in step S104), the circuit unit determines whether or not the operation content and the state match (step S108). For example, when the lock is currently in the lock state but is commanded again to lock, it is determined that the operation content does not match the state. When the door is commanded to be locked in the opened state, it is also determined that the operation content does not match the state.

When the circuit unit determines that the operation content does not match the state (no at step S108), the circuit unit returns to accepting the operation content (step S103).

When the circuit unit determines that the operation content matches the state (yes in step S108), the motor 22 is driven in the set locking direction, the finger rotator connecting unit 9 (which is interlocked with the handle 3) is rotated by a predetermined angle, and the circuit unit is locked (step S109), and the latest state is recorded in a nonvolatile memory or the like in the circuit unit. When the locking direction is set to, for example, the clockwise direction, the motor 22 is driven by applying a power source of a polarity corresponding to the clockwise rotation of the handle 3 until the value of the potentiometer 28 changes by a predetermined angle (for example, 90 °).

Next, the circuit unit causes the motor 22 to rotate in reverse by a predetermined angle, and the handle 3 and the gear unit are brought into an idling state (step S110). For example, after the handle 3 is rotated 90 ° clockwise to be locked, the motor 22 is rotated 90 ° counterclockwise. Then, the circuit unit shifts to the sleep state (step S114), and the process ends.

On the other hand, when the operation content is the unlock command (unlock in step S104), the circuit unit determines whether or not the operation content and the state match (step S111). For example, when the unlocking state is currently set but the unlocking is instructed again, it is determined that the operation content does not match the state. Even when the door is commanded to be unlocked in the opened state, it is determined that the operation content does not match the state.

When the circuit unit determines that the operation content does not match the state (no at step S111), the circuit unit returns to accepting the operation content (step S103).

When the circuit unit determines that the operation content matches the state (yes in step S111), the motor 22 is driven in the set unlocking direction, the thumbturn connecting unit 9 (with which the handle 3 is interlocked) is rotated by a predetermined angle to unlock the circuit unit (step S112), and the latest state is recorded in a nonvolatile memory or the like in the circuit unit. For example, when the unlocking direction is set to the counterclockwise direction, the motor 22 is driven by applying a power source of a polarity corresponding to the counterclockwise rotation of the handle 3 until the value of the potentiometer 28 changes by a predetermined angle (for example, 90 °).

Next, the circuit unit rotates the motor 22 in reverse by a predetermined angle, and enters an idling state in which the handle 3 and the gear do not mesh (step S113). For example, after the handle 3 is rotated 90 ° counterclockwise to unlock the lock, the motor 22 is rotated 90 ° clockwise. Then, the circuit unit shifts to the sleep state (step S114), and the process ends.

Fig. 9 is a flowchart showing an operation example of embodiment 1, and is a processing example of a circuit portion for turning the handle 3 of the electronic lock 1 by a manual operation to set the micro switch 16 (fig. 6 and 7) to an on (or off) state.

In fig. 9, the handle 3 of the electronic lock 1 is manually operated to turn the micro switch 16 to the on (or off) state, and after the process is started, the circuit unit is released from the sleep state (step S201).

Next, when the circuit unit is released from the sleep state, the value of the potentiometer 28 is read, and the current state (the locked state, the unlocked state, and the like) is acquired and recorded in the nonvolatile memory and the like in the circuit unit (step S202).

Then, the circuit unit determines whether or not the state of the microswitch 16 has not changed for a predetermined time (step S203), and returns to the acquisition state (step S202) when it is determined that the state of the microswitch has not changed for the predetermined time (the state has changed within the predetermined time) (no in step S203).

When it is determined that the state in which the state of the micro switch 16 has not changed continues for the predetermined time (yes in step S203), the circuit unit shifts to the sleep state (step S204), and the process ends.

While the embodiment 1 of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the interest of the invention.

As described above, the electronic lock according to embodiment 1 includes the handle for manual operation, the finger grip connecting portion fixed to the handle via the rotating shaft, the gear having the surface facing the bottom surface of the handle and disposed coaxially with the rotating shaft, the 1 st projection provided on the bottom surface of the handle, and the 2 nd projection provided on the surface facing the bottom surface of the gear and capable of coming into contact with the 1 st projection in the rotational direction. This reduces the number of parts and improves the accuracy of the position and rotation.

The gear unit further includes a bottom case having a cylindrical portion, an inner peripheral surface of which constitutes a bearing of the rotating shaft, and an outer peripheral surface of which constitutes a bearing of the gear. This can improve the accuracy of the arrangement of the rotary shaft and the gear.

The potentiometer further includes a gear for potentiometer provided integrally with or separately from the outer periphery of the handle, and the gear for potentiometer meshes with a gear fixed to a rotating shaft of the potentiometer for detecting a position. This enables the rotation angle of the handle to be directly and accurately grasped.

The electric motor further includes a 1 st drive side gear fixed to an output shaft of the electric motor, a 2 nd drive side gear meshing with the 1 st drive side gear, a 3 rd drive side gear integrally formed with the 2 nd drive side gear, a 4 th drive side gear meshing with the 3 rd drive side gear, and a 5 th drive side gear integrally formed with the 4 th drive side gear and meshing with the gear. This makes it possible to easily configure the drive system.

The manual operation detection switch further includes a switch operation plate fixed to the rotation shaft, the switch operation plate having a protrusion for pressing an operation portion of the manual operation detection switch. This makes it possible to easily detect the rotation of the handle by the manual operation of the user.

The manual operation detection switch further includes a protrusion integrally provided on an outer periphery of the handle and configured to press the operation portion of the manual operation detection switch. This makes it possible to easily detect the rotation of the handle by the manual operation of the user.

[ 2 nd embodiment ]

Embodiment 2 will be described with reference to fig. 10 to 18. The following description focuses on differences from embodiment 1.

< construction of handle 3 >

In the electronic lock 1 according to embodiment 2, the structure of the handle 3 has features. Fig. 10 is a diagram showing the structure of the handle 3 in embodiment 2. The handle 3 according to embodiment 2 may be regarded as a modification of the handle 3 according to embodiment 1 described with reference to fig. 3 and 4.

As shown in fig. 10, the handle 3 of embodiment 2 includes a 1 st member 31 and a 2 nd member 32. The 1 st member 31 is a portion of the handle 3 exposed to the outside, and is also a portion provided with a knob portion 3b for manual operation. The knob portion 3b is formed so as to protrude toward the positive z-direction side of the 1 st member 31. The 2 nd member 32 is a portion of the handle 3 disposed in the housing, and includes a potentiometer gear 3d (gear portion) for transmitting the rotation angle of the handle 3 to the potentiometer 28 (1 st detection portion). The gear 3d for a potentiometer is formed on the principal surface of the 2 nd member 32 on the negative z-direction side and is concentric with the hole 3f in the center of the principal surface.

The 1 st part 31 and the 2 nd part 32 are formed of different materials. That is, the knob portion 3b of the 1 st member 31 and the potentiometer gear 3d of the 2 nd member 32 are separate members.

Since the knob portion 3b of the 1 st member 31 is an external member exposed to the outside of the electronic lock 1, it is preferable to use a material suitable for the external appearance of the 1 st member 31 (for example, a material capable of forming a beautiful surface shape, a material convenient for coating, or the like). On the other hand, because of the power transmitting function of the potentiometer gear 3d of the 2 nd member 32, the 2 nd member 32 is preferably made of a material corresponding thereto (e.g., a non-slip, wear-resistant material). In embodiment 2, the handle 3 is formed as the separate 1 st member 31 and 2 nd member 32, and therefore, materials suitable for the functions of the respective portions can be used, and thus there is an advantage that the handle 3 can be formed more easily.

On the main surface of the 1 st member 31 on the opposite side (the z-negative direction side) from the knob portion 3b, a projection 33 is provided, and the projection 33 can be disposed in the recess 61 of the gear 6. In addition, in fig. 10, for convenience, an oblique view when the 1 st member 31 and the 2 nd member 32 of the handle 3 are viewed from the z-negative direction side and an oblique view when the gear 6 is viewed from the z-positive direction side are shown.

As shown in fig. 10, the projection 33 is formed so as to project toward the negative z-direction side of the 1 st member 31. A hole 34 through which the projection 33 can be inserted is formed in the 2 nd member 32 so as to penetrate along the z direction. When the 1 st member 31 and the 2 nd member 32 are integrally connected to form the handle 3, the projection 33 passes through the hole 34 and projects to the negative z-direction side of the handle 3. In a state where the handle 3 and the gear 6 are assembled inside the electronic lock 1, the protrusion 33 of the handle 3 enters the recess 61 of the gear 6. The recess 61 is formed so as to be recessed toward the negative z-direction side in a region between the hole 63 in the center portion of the gear 6 and the gear 64 in the outer edge portion, and extends in the circumferential direction of the gear 6.

The recess 61 is divided into 2 regions by a wall 62 extending in the radial direction of the gear 6, and 1 projection 33 of the handle 3 is arranged in each of the 2 regions. The projection 33 of the handle 3 and the wall 62 of the gear 6 constitute an idling mechanism, similarly to the projection 3e of the handle 3 and the projection 6a of the gear 6 of embodiment 1. That is, the wall portion 62 abuts against and presses the projection 33 of the handle 3 to rotate the handle 3 in accordance with the rotation of the driving-side gear 6, and then the gear 6 is reversed by a predetermined angle to leave a space between the wall portion 62 and the projection 33, whereby the handle 3 can be reversed by a manual operation without affecting the driving-side gear 6.

In the example of fig. 10, the handle 3 has 2 projections 33, but the number of projections 33 may be other than 2. The number of recesses 61 of the gear 6 can be changed according to the number of projections 33.

< arrangement of sensor classes >

In the electronic lock 1 according to embodiment 2, the potentiometer 28 (1 st detecting unit), the microswitch 16 (2 nd detecting unit), and the magnetic sensor 18 (3 rd detecting unit) are arranged in a characteristic manner. Fig. 11 is a diagram showing an example of the arrangement of the potentiometer 28, the microswitch 16 and the magnetic sensor 18 in embodiment 2. In fig. 11, components such as the handle 3 and the gear 6 originally disposed on the z-positive direction side of the base plate 20 are removed and the structure near the rotation axis 4 is enlarged and shown, compared with the external oblique view of the electronic lock 1 shown in fig. 2 and the like after the top case 5 is removed. The arrangement of the potentiometer 28, the microswitch 16 and the magnetic sensor 18 according to embodiment 2 may be regarded as a modification of the arrangement of the potentiometer 28, the microswitch 16 and the magnetic sensor 18 according to embodiment 1 described with reference to fig. 6, 7 and the like.

As shown in fig. 11, in embodiment 2, the potentiometer 28, the microswitch 16 and the magnetic sensor 18 are provided on the same substrate 20 disposed inside the electronic lock 1.

With this configuration, the substrate provided inside the housing of the electronic lock 1 can be miniaturized, and the electronic lock 1 as a whole can also be miniaturized. In addition, since the processing of a plurality of sensors can be collectively performed on a single substrate 20, the cost can be reduced.

The magnetic sensor 18 is preferably disposed in the vicinity of the rotary shaft 4 of the finger joint 9. In the example of fig. 11, the magnetic sensor 18 is disposed on the y-negative direction side of the rotary shaft 4 (short-side direction side of the electronic lock 1).

Fig. 12 is a diagram showing a modification 1 of the arrangement example of the potentiometer 28, the microswitch 16 and the magnetic sensor 18. The outline of fig. 12 is the same as fig. 11. As shown in fig. 12, the magnetic sensor 18 may be disposed near the rotary shaft 4 of the finger joint unit 9, or may be disposed at a different position in fig. 11. In the example of fig. 12, the magnetic sensor 18 is disposed at a position on the x-negative direction side (the motor 22 side, the longitudinal direction side of the electronic lock 1) of the rotary shaft 4.

With reference to fig. 13 and 14, an effect of disposing the magnetic sensor 18 in the vicinity of the rotary shaft 4 will be described. Fig. 13 is a schematic diagram showing a state in which the door is provided with the longitudinal direction of the electronic lock 1 as the vertical direction. Fig. 14 is a schematic view showing a state in which a door is provided with the longitudinal direction of the electronic lock 1 as the left-right direction.

As shown in fig. 13, the electronic lock 1 according to the present embodiment engages with the finger rotor 41 of the existing door 40 and operates the finger rotor 41. The magnetic sensor 18 is able to detect the depressed state of the door leaf 40 by detecting the approach of the magnet 43 provided on the building side (for example, the door frame 42 on which the door leaf 40 is mounted) on which the door leaf 40 provided with the electronic lock 1 is provided.

For example, as shown in fig. 13, a magnetic sensor 18 disposed near the rotary shaft 4 as an example and a magnetic sensor 18a disposed at a position distant from the rotary shaft 4 as a comparative example will be discussed. In the example of fig. 13, the magnetic sensor 18 of the embodiment and the magnetic sensor 18a of the comparative example are both disposed on the center line C in the longitudinal direction (the up-down direction in fig. 13) of the electronic lock 1.

In the present example, as shown in fig. 13, in a state where the electronic lock 1 is provided on the door 40 with the longitudinal direction thereof being the vertical direction, the distance D1 between the magnet 43 and the magnetic sensor 18 of the embodiment and the distance D1a between the magnet 43 and the magnetic sensor 18a of the comparative example are substantially the same.

In contrast, as shown in fig. 14, in a state where the electronic lock 1 is provided on the door 40 with the longitudinal direction thereof being the left-right direction, the distance D2 between the magnetic sensor 18 of the embodiment and the magnet 43 and the distance D2a between the magnetic sensor 18a of the comparative example and the magnet 43 are greatly different.

The difference between the distance D1 of the embodiment in fig. 13 and the distance D2 of the embodiment in fig. 14 is relatively small, and therefore, the detection accuracy of the magnetic sensor 18 of the embodiment is difficult to be different. In contrast, the difference between the distance D1a of the comparative example in fig. 13 and the distance D2a of the comparative example in fig. 14 is relatively large, and therefore, the detection accuracy of the magnetic sensor 18a of the comparative example is liable to vary.

As described above, by disposing the magnetic sensor 18 in the vicinity of the rotation shaft 4 as in the present embodiment, the difference in positional relationship with the magnet 43 is small regardless of whether the electronic lock 1 is installed in the left-right direction or the up-down direction of the door 40, and therefore, the difference in detection accuracy due to the installation direction is less likely to occur.

Fig. 15 is a diagram showing a modification example 2 of the arrangement example of the potentiometer 28, the microswitch 16 and the magnetic sensor 18. In embodiment 2, at least the potentiometer 28, the microswitch 16 and the magnetic sensor 18 may be mounted on the same substrate 20, and the magnetic sensor 18 is not necessarily arranged in the vicinity of the rotation shaft 4. For example, as shown in fig. 15, the magnetic sensor 18 may be disposed near a side wall of the peripheral portion of the housing (bottom case 7). For example, the magnetic sensor 18 shown in fig. 11 and 12 is disposed closer to the rotation shaft 4 than the side wall of the peripheral portion of the bottom case 7, and the magnetic sensor 18 shown in fig. 15 is disposed closer to the side wall of the peripheral portion of the bottom case 7 than the rotation shaft 4.

< switching Structure of microswitch 16 >

The electronic lock 1 according to embodiment 2 is also characterized by a switching structure of the microswitch 16 for manual operation detection. Fig. 16 is a diagram showing a switching structure of the micro switch 16 in embodiment 2. Fig. 16 is an enlarged view of the structure in the vicinity of the microswitch 16 in fig. 11, similarly to fig. 11. Fig. 17 and 18 are oblique views of the switching structure shown in fig. 16 when viewed from the negative z-direction side. In fig. 17, for convenience, illustration of bottom case 7 is omitted. The switching structure of the micro-switch 16 according to embodiment 2 may be regarded as a modification of the switching structure of the micro-switch 16 according to embodiment 1 described with reference to fig. 6 and the like.

As shown in fig. 16, the electronic lock 1 according to embodiment 2 includes a cam 50, and the cam 50 rotates in accordance with the rotation of the handle 3. As described above with reference to fig. 6, the microswitch 16 detects that the actuator 16a (operation portion) is pressed, and switches to the on state (or the off state).

The cam 50 is rotatably attached to a rotation shaft 54 provided upright from the bottom surface of the bottom case 7 toward the positive z-direction side. The cam 50 includes a cylindrical screw portion 51 fitted to a screw shaft 54, and a 1 st arm portion 52 and a 2 nd arm portion 53 extending in different directions from the screw portion 51. The 1 st arm portion 52 has a pressing portion 55 at the tip thereof, and the pressing portion 55 presses the actuator 16a of the microswitch 16 when it is rotated in accordance with the rotation of the handle 3.

The electronic lock 1 further includes an urging portion 56, and the urging portion 56 urges the cam 50 toward the opposite side of the pressing portion 55 in the rotation direction of the actuator 16a of the microswitch 16. The biasing portion 56 is, for example, a torsion spring, one end portion of which is connected to the tip of the 2 nd arm portion 53 of the cam 50, and the other end portion of which is fixed to the bottom case 7 or the like. The cam 50 can rotate against the urging force of the urging portion 56 in response to the rotation of the handle 3.

As shown in fig. 17, a projection 57 projecting in the z-negative direction is formed at the tip of the 1 st arm portion 52. As shown in fig. 18, the actual structure of the protrusion 57 is exposed from the bottom case 7 toward the negative z-direction side through a slit 58 formed through the bottom surface of the bottom case 7. The projection 57 projecting from the bottom case 7 to the outside is disposed at a position capable of contacting with a projection 8a formed on the outer peripheral surface of the switch operating plate 8 and projecting outward in the circumferential direction, and is slidable along the slit 58 in accordance with the pressing of the projection 8a.

The handle 3 is rotated clockwise or counterclockwise by a manual operation of the user, and the switch operation plate 8 is rotated in conjunction therewith as shown by an arrow a in fig. 17 and 18, so that the projection 8a provided on the outer periphery of the switch operation plate 8 presses the projection 57 of the 1 st arm portion 52 of the cam 50 radially outward. The cam 50 rotates along the rotation shaft 54 when the protrusion 57 receives a pressing force from the switch operating plate 8. Accordingly, the 1 st arm 52 moves in the direction of rotation of the actuator 16a for bringing the cam 50 close to the microswitch 16 as indicated by the arrow B in fig. 16 to 18 and the 2 nd arm 53 moves in the direction of rotation of the actuator 16a as indicated by the arrow C in fig. 16 and 17.

By such rotation of the 1 st arm portion 52, the pressing portion 55 is pressed by the actuator 16a of the micro-switch 16, and the micro-switch 16 is turned on (or off).

Further, the biasing portion 56 biases the 2 nd arm portion 53 toward the opposite side of the rotation direction indicated by the arrow C by the rotation of the 2 nd arm portion 53 as indicated by the arrow D in fig. 16 and 17. While the projection 57 of the 1 st arm 52 receives the pressing force from the projection 8a of the switch operating plate 8, the cam 50 can rotate against the biasing force D of the biasing portion 56 in accordance with the rotation of the handle 3.

On the other hand, when the projection 57 of the 1 st arm 52 passes the projection 8a of the switch operating plate 8 and the projection 57 does not receive any more pressing force from the projection 8a, the 2 nd arm 53 receives the urging force D from the urging member 56, and the cam 50 rotates in a direction (direction of arrow D) opposite to the pressing direction in which the pressing member 55 is separated from the actuator 16a of the microswitch 16. Thereby, the micro switch 16 is switched to the off (or on) state.

As described above, in embodiment 2, the start switch (micro switch 16) is not directly pressed by the plate (the rotating element such as the switch operating plate 8) but is pressed by the cam 50. With this configuration, by appropriately adjusting the shape of the cam 50 (for example, the length of the 1 st arm portion 52 or the 2 nd arm portion 53, the position of the projection 57 with respect to the projection 8a of the switch operating plate 8, and the like), the degree of freedom of the place where the micro switch 16 is disposed can be increased, and the micro switch can be more easily disposed on the same substrate 20 together with other sensors.

Further, if the degree of freedom of arrangement of the microswitch 16 can be increased as described above, the microswitch 16 can be easily arranged near the magnetic sensor 18 near the rotation shaft 4, as shown by a broken line in fig. 16, for example. If such an arrangement is possible, as shown in fig. 16, for example, the area of the substrate 20 can be reduced by removing the portion of the substrate 20 on the x-positive direction side (the portion indicated by oblique lines in fig. 16), and the electronic lock 1 can be further reduced in weight and size.

Similarly, by adjusting the shape of the cam 50, the pressing force or timing applied to the actuator 16a of the microswitch 16 by the pressing part 55 of the cam 50 can be freely adjusted, and therefore the load applied to the microswitch 16 by being pressed can be reduced, and the operating noise can be reduced.

The present invention is not limited to the above-described embodiments. The present invention also provides a structure in which the above-described various structural elements are appropriately combined. Further effects and modifications can be easily obtained by those skilled in the art. Therefore, the broader aspects of the present invention are not limited to the above embodiments, and various modifications can be made.

The domestic application requests priority from japanese patent application No. 2019-217448, filed on 29/11/2019, and cites the entire contents of No. 2019-217448.

Description of the symbols

1. Electronic lock

2. Top cover

3. Handle bar

31. Item 1

32. 2 nd part

3b knob part

3c cylinder part

3d potentiometer gear (Gear part)

3e projection

4. Rotating shaft

5. Top shell

6. Gear wheel

6a projection

7. Bottom shell

7a tube part

8. Switch operation panel

8a projection

9. Finger rotator connecting part

16. Microswitch (No. 2 detection part)

16a actuator (operation part)

18. Magnetic sensor (No. 3 detecting part)

22. Electric motor

22a output shaft

23. Worm screw

24. Worm wheel

25-27 spur gear

28. Potentiometer (No. 1 detection part)

29. Gear for potentiometer

20. Substrate board

40. Door leaf

41. Finger rotating device

42. Door frame

43. Magnet

50. Cam wheel

55. Pressing part

56. A force application part.

Claims (6)

1. An electronic lock, comprising:

a handle for manual operation;

a finger rotator connecting part fixed to the handle through a rotating shaft;

a gear having a surface facing a bottom surface of the handle and disposed coaxially with the rotary shaft;

a 1 st projection provided on a bottom surface of the handle; and

and a 2 nd projection provided on a surface of the gear facing the bottom surface of the handle, and capable of coming into contact with the 1 st projection in the rotational direction.

2. The electronic lock of claim 1,

the electronic lock includes a bottom case having a cylinder portion that constitutes a bearing of the rotating shaft on an inner peripheral surface and constitutes a bearing of the gear on an outer peripheral surface.

3. The electronic lock of claim 1,

the electronic lock includes a potentiometer gear integrally or separately provided on an outer periphery of the handle and engaged with a gear fixed to a rotary shaft of the position detection potentiometer.

4. The electronic lock of claim 1, comprising:

a 1 st driving side gear fixed to an output shaft of the motor;

a 2 nd driving side gear engaged with the 1 st driving side gear;

a 3 rd driving side gear integrally formed with the 2 nd driving side gear;

a 4 th driving side gear engaged with the 3 rd driving side gear; and

and a 5 th driving side gear integrally formed with the 4 th driving side gear and engaged with the gear.

5. The electronic lock according to any one of claims 1 to 4,

the electronic lock includes a switch operating plate fixed to the rotary shaft and having a protrusion for pressing an operating portion of a manual operation detection switch.

6. The electronic lock according to any one of claims 1 to 4,

the electronic lock includes a protrusion integrally provided with an outer circumference of the handle,

the protrusion is used for pressing an operation part of the manual operation detection switch.

Images