Electronic lock installation structure, thumb turn device, electronic lock installation method, and electronic lock removal method

Abstract

To provide an electronic lock mounting structure allowing a retrofit-type electronic lock to be easily attached to and detached from a thumb-turn of a door, as well as, capable of securely attaching the electronic lock to a thumb-turn device.SOLUTION: An electronic lock mounting structure 10 includes: thin projections 27A, 27B (electronic lock side engagement parts) formed on a pedestal 20 attached to an electronic lock 1; and grooves 33A, 33B (thumb-turn side engagement parts) formed in the thumb-turn device 30 for engaging with the threads 27A, 27B when the threads 27A, 27B are moved. With the electronic lock 1 attached to the thumb-turn device 30, the thin projections 27A, 27B, and the grooves 33A, and 33B are relatively moveable.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to an electronic lock mounting structure, a thumbturn device, an electronic lock mounting method, and an electronic lock removal method. [Background technology]

[0002] There is known a locking and unlocking device (electronic lock) that can automatically lock or unlock a door by rotating the door thumb turn. Patent Document 1 describes a so-called retrofit type electronic lock that has a thumb turn holder that can clamp the thumb turn knob, and operates the thumb turn by rotating the thumb turn holder while clamping the knob. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6060471 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional add-on electronic locks such as those described in Patent Document 1, the housing of the electronic lock must be fixed to the periphery of the thumb turn, such as the main surface of the door, in order to maintain the thumb turn holder clamping the thumb turn knob. Double-sided tape is typically used to fix the electronic lock to the door. This has led to problems such as difficulty in removing the electronic lock from the door or fine-tuning its position, and the tape leaving unsightly marks on the door when removed.

[0005] The present disclosure aims to provide an electronic lock mounting structure, a thumb turn device, an electronic lock mounting method, and an electronic lock removal method that allow an aftermarket electronic lock to be easily attached and detached to a door thumb turn and that allow the electronic lock to be firmly attached to a thumb turn device. [Means for solving the problem]

[0006] An electronic lock mounting structure according to one aspect of an embodiment of the present invention comprises an electronic lock side engaging portion provided on an electronic lock, and a thumb turn side engaging portion provided on a thumb turn device, which engages with the electronic lock side engaging portion as the electronic lock side engaging portion moves, and when the electronic lock is attached to the thumb turn device, the electronic lock side engaging portion and the thumb turn side engaging portion are movable relative to each other. The thumb turn device is provided with an attachment on the thumb turn shaft side to enable connection of the thumb turn device with a plurality of types of locks. do. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide an electronic lock mounting structure, a thumb turn device, an electronic lock mounting method, and an electronic lock removal method that allow an aftermarket electronic lock to be easily attached and detached to a door thumb turn, and that allow the electronic lock to be firmly attached to a thumb turn device. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view showing an example of an electronic lock installed on a door; [Figure 2] A perspective view showing the rear side of the electronic lock [Figure 3] FIG. 1 is a perspective view showing a thumb turn device of an electronic lock mounting structure according to a first embodiment; [Figure 4] Plan view of the rear side of the thumb turn device [Figure 5] 1 is a diagram illustrating a method for attaching an electronic lock in the first embodiment. [Figure 6] Schematic diagrams illustrating the operation of a locking portion in the first embodiment. [Figure 7] FIG. 1 is a side view showing a state in which the base is attached to the thumb turn device in the first embodiment. [Figure 8] FIG. 10 is a rear perspective view showing a state in which the base is attached to the thumb turn device in the first embodiment. [Figure 9] A perspective view of the rear side with the base made transparent from Figure 8. [Figure 10] Bottom view showing the base attached to the thumb turn device [Figure 11] Cross section AA in Figure 7 [Figure 12] Diagram showing the variations of attachments for thumb turn devices [Figure 13] FIG. 10 is an exploded perspective view of the thumb turn device of the electronic lock mounting structure according to the second embodiment, viewed from the rear side. [Figure 14] FIG. 10 is a plan view of the base of the electronic lock mounting structure according to the second embodiment, viewed from the rear side; [Figure 15] 10A and 10B are diagrams illustrating a method for attaching an electronic lock in the second embodiment. [Figure 16] FIG. 10 is a rear perspective view showing a state in which the base is attached to the thumb turn device in the second embodiment. [Figure 17] FIG. 10 is an exploded perspective view of the electronic lock mounting structure according to the third embodiment, viewed from the rear side. [Figure 18] A plan view of the thumb turn device of the electronic lock mounting structure seen from the rear side [Figure 19] FIG. 10 is an exploded perspective view of a thumb turn device of an electronic lock mounting structure according to a third embodiment, viewed from the front side. [Figure 20] FIG. 11 is a rear perspective view showing a state in which the base is attached to the thumb turn device in the third embodiment. [Figure 21] 10A and 10B are schematic diagrams illustrating the operation of a locking portion in the third embodiment; [Figure 22] FIG. 10 is a cross-sectional view showing a state in which the base is attached to the thumb turn device in the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described with reference to the accompanying drawings. To facilitate understanding of the description, the same components in the drawings will be denoted by the same reference numerals as much as possible, and duplicated descriptions will be omitted.

[0010] In the following description, the x, y, and z directions are perpendicular to each other. The x direction is the longitudinal direction of the electronic lock 1. The y direction is the lateral direction of the electronic lock 1. The z direction is the extension direction of the rotation axis of the thumb turn connecting portion 9. In the example of Figure 1, when the electronic lock 1 is installed on the door 40, the x direction is the vertical direction, and the y and z directions are horizontal directions. The x and y directions are the extension directions of the surface 40A of the door 40 on which the electronic lock 1 is installed. In the following description, the negative x direction side may be referred to as the "upper side" and the positive x direction side as the "lower side." The positive z direction side may be referred to as the "front side" or "front side," and the negative z direction side may be referred to as the "rear side," "back side," or "rear side."

[0011] [First embodiment] The first embodiment will be described with reference to FIGS.

[0012] <Outline of electronic lock configuration> First, the schematic configuration of the electronic lock 1 will be described with reference to Figures 1 and 2. Figure 1 is a plan view showing an example of how the electronic lock 1 is installed on a door 40. Figure 2 is a perspective view showing the rear side of the electronic lock 1.

[0013] As shown in Figure 1, electronic lock 1 is retrofitted to a thumb turn 41 provided on the interior surface 40A of an existing door 40. Thumb turn 41 is an element for unlocking and locking door 40, and can be unlocked or locked by a user rotating knob 42 provided on the end surface on the z-positive side, for example. Known thumb turns 41 are, for example, frustoconical in shape, and knob 42 is formed on the circular end surface so as to pass through rotation axis 4 and extend along the diameter of the circular end surface.

[0014] The electronic lock 1 is a device for automatically rotating the thumb turn 41, which is normally operated manually.

[0015] As shown in Figure 2, the electronic lock 1 has a generally rectangular appearance with approximately half of the lower side cut away from the rear surface of the housing 2. The cut-out portion of the rear surface is provided with a thumb turn holder 5 that engages with the knob 42 of the thumb turn 41 of the door 40.

[0016] The thumb-turn holder 5 is driven to rotate about a rotation axis 4 shown in FIG. 1 by a power source (not shown), such as a motor, provided inside the housing 2 of the electronic lock 1. The thumb-turn holder 5 is formed, for example, in a substantially cylindrical shape as shown in FIG. 2, and a groove 51 that passes through the center of rotation and extends in the diameter direction is formed on the end face on the negative z side. The groove 51 is formed with a width that allows the knob 42 of the thumb-turn 41 to be inserted. The electronic lock 1 is installed on the interior surface 40A of the door 40, as shown in FIG. 1, with the knob 42 of the thumb-turn 41 engaged in the groove 51 of the thumb-turn holder 5. The thumb-turn holder 5 is then driven to rotate by a drive source, such as a motor, thereby rotating the thumb-turn 41 engaged in the groove 51.

[0017] A knob 3 that can be manually operated by a user is provided on the front surface of the housing 2 of the electronic lock 1, opposite the thumb turn holder 5. As shown in FIG. 1, the knob 3 has a circular surface 3A that is perpendicular to the rotation axis of the knob 3, and a roughly crescent-shaped knob portion 3B provided in the center of this circular surface 3A. The thumb turn holder 5 is fixed to the knob 3 via a rotation axis 4, and the thumb turn holder 5 rotates together with the knob 3. The user can also manually rotate the thumb turn 41 by operating the knob 3.

[0018] The electronic lock 1 receives operation instructions wirelessly or via wired communication from a controller (not shown) such as a smartphone or control panel, and performs the corresponding operation (locking, unlocking, etc.) The wireless communication method used may be Bluetooth (registered trademark), Wi-Fi (registered trademark), etc.

[0019] In a conventional add-on electronic lock 1, when installed on a door 40 as shown in FIG. 1, the housing 2 of the electronic lock 1 must be fixed to the periphery of the thumb turn 41, such as the surface 40A of the door 40, in order to maintain the state in which the knob portion 42 of the thumb turn 41 is clamped by the thumb turn holder 5. Double-sided tape is typically used as a conventional method for fixing the electronic lock 1 to the door 40. For example, because the back surface 2A of the housing 2 comes into contact with the surface 40A of the door 40, double-sided tape is applied to this back surface 2A and attached to the door 40. This has led to problems such as making it difficult to remove the electronic lock 1 from the door 40 or to fine-tune its position, and also leaving tape marks on the door 40 when removed, which can be unsightly.

[0020] The electronic lock mounting structure 10 according to the first embodiment is intended to solve the problems that occur when the conventional electronic lock 1 is installed.

[0021] <Outline of Electronic Lock Mounting Structure 10> The configuration of the electronic lock mounting structure 10 will be described with reference to Figures 3 and 4 in addition to Figure 2. Figure 2 is a perspective view showing the rear side of the electronic lock 1 as described above, and is also a perspective view showing the base 20 of the electronic lock mounting structure 10 according to the first embodiment. Figure 3 is a perspective view showing the thumb turn device 30 of the electronic lock mounting structure 10 according to the first embodiment.

[0022] As shown in Figures 2 and 3, the electronic lock mounting structure 10 comprises a base 20 and a thumbturn device 30. The base 20 is a component installed on the back side of the electronic lock 1. The electronic lock 1 can be fixed via the base 20 without coming into contact with the door 40. The thumbturn device 30 has the same function as the existing thumbturn 41, and is installed on the door 40 in place of the thumbturn 41. The thumbturn device 30 is a dedicated item included in the electronic lock mounting structure 10.

[0023] In the electronic lock mounting structure 10 of the first embodiment, the base 20 to which the electronic lock 1 is attached is slid in a predetermined direction (for example, vertically downward from the x-negative side (upper side) to the x-positive side (lower side)) along the extension direction of the surface 40A to which the thumb-turn device 30 is attached relative to the thumb-turn device 30 attached to the door 40. This causes the base 20 to engage with the thumb-turn device 30, and as a result, the electronic lock 1 is attached to the thumb-turn device 30.

[0024] As shown in FIG. 2, the base 20 is attached to the electronic lock 1 so as to cover the outer periphery of the portion of the housing 2 of the electronic lock 1 that is recessed from the rear surface 2A around the thumb turn holder 5, and also to cover the rear surface 2A. The base 20 has a plate-shaped back plate 21 located at the end on the negative z-axis side and extending in the x- and y-axis directions, a pair of side plate portions 23, 24 located below the back plate 21 and protruding from the back plate 21 in the positive x-axis direction, and a bottom plate portion 25 formed to connect the lower ends of the pair of side plate portions 23, 24. The side plate portion 23 is formed along the end on the negative y-axis side of the back plate 21, and the side plate portion 24 is formed along the end on the positive y-axis side of the back plate 21, with approximately the same thickness. The end faces 23A and 24A of the side plate portions 23 and 24 (see FIG. 7, etc.) are formed to mate with the lower end faces 2C of the protrusions 2B on the upper back side of the housing 2 of the electronic lock 1.

[0025] A screw insertion hole 29 is provided in the upper part of the back plate portion 21. With the base 20 fitted to the rear side of the electronic lock 1, a screw 2E is inserted from the negative z direction through the screw insertion hole 29 and screwed into a screw hole 2D provided in the rear surface 2A of the housing 2 of the electronic lock 1, thereby fixing the base 20 to the electronic lock 1 as a single unit.

[0026] An opening 26 is formed in the lower part of the back plate portion 21, recessed upward from the lower end. The shape of opening 26 is formed to be the same as the outer shape of the thumb-turn device 30 (rectangular in the example of FIG. 2), and is formed so that the thumb-turn device 30 can be fitted therein. The portion of the bottom plate portion 25 on the negative z side is recessed toward the positive z side to allow the thumb-turn device 30 to be inserted into this opening 26 (see FIG. 10). Opening 26 is defined by a pair of side surfaces 26A, 26B and an upper end surface 26C that connects the upper ends of these side surfaces 26A, 26B.

[0027] The pair of side surfaces 26A, 26B are formed with rib portions 27A, 27B along the x direction. The rib portions 27A, 27B are formed to protrude from the side surfaces 26A, 26B toward the center of the opening 26. These rib portions 27A, 27B function as "electronic lock-side engagement portions." The rib portions 27A, 27B are also provided with locking recesses 28. When viewed from the z direction, the locking recesses 28 are recessed into portions of the rib portions 27 so as to form a triangular shape with a base extending along the y direction on the positive x direction (downward) side and a hypotenuse with the protruding end of the rib portion 27 in the y direction at the top and the base end at the bottom. In this embodiment, the locking recess 28 is formed on the rib portion 27A not shown in FIG. 2, but for convenience of illustration, it is shown in FIG. 2 as being formed on the other rib portion 27B. The function of the locking recess 28 will be described in detail later.

[0028] As shown in Figure 3, the thumbturn device 30 is attached to the box lock 50 of the door 40, replacing the existing thumbturn 41. Like the existing thumbturn 41, the thumbturn device 30 has a main body 31 and a knob portion 32, and by rotating the knob portion 32, the box lock 50 can be operated to lock and unlock the door 40.

[0029] Unlike existing thumb turn devices 41, thumb turn device 30 has a main body 31 formed in a rectangular prism shape. It has a front surface 31E facing the z-positive direction and provided with knob portion 32, a back surface 31F facing the z-negative direction and contacting surface 40A of door 40, a side surface 31A facing the y-negative direction, a side surface 31B facing the y-positive direction, a top surface 31C facing the x-negative direction, and a bottom surface 31D facing the x-positive direction. Side surfaces 31A and 31B are formed with grooves 33A and 33B extending along the x-direction. Grooves 33A and 33B are recessed from side surfaces 31A and 31B toward the interior of main body 31. These grooves 33A and 33B function as "thumb turn-side engagement portions."

[0030] The thumbturn device 30 is also provided with a screw insertion hole 37 whose axis is in the z direction. The screw insertion hole 37 is positioned coaxially with the screw hole 43 and insertion hole 44 on the box lock 50 side for attaching the existing thumbturn 41 to the box lock 50. The screw insertion hole 37 penetrates between the front surface 31E and the back surface 31F of the main body 31. The thumbturn device 30 is installed on the box lock 50 of the door 40 by inserting a screw 45 for attaching the existing thumbturn 41 to the box lock 50 into the screw insertion hole 37 and threading it into the screw hole 43.

[0031] In the example of Fig. 3, two screw insertion holes 37 are provided in main body 31. The two screw insertion holes 37 are arranged, for example, as illustrated in Fig. 3, in two opposing areas (an area including side surface 31A and an area including side surface 31B) of four areas divided by two diagonal lines on front surface 31E of square-shaped main body 31 (see also Fig. 4). By arranging screw insertion holes 37 in this way, thumb turn device 30 can be installed so that the entire back surface 31F comes into contact with door 40 with a substantially uniform force.

[0032] Figure 4 is a plan view of the rear side of thumb-turn device 30. As shown in Figure 4, thumb-turn device 30 has a locking portion 34. Locking portion 34 is formed to extend in the y direction and is installed so as to be movable relative to main body 31 along the y direction. A coil spring 34C is attached to the end of locking portion 34 on the y positive side. Locking portion 34 is biased toward the y negative side by coil spring 34C. An inclined surface 34A is formed at the end of locking portion 34 on the y negative side. Inclined surface 34A is formed so that the normal direction faces diagonally upward (toward the x negative direction and the y negative direction).

[0033] The tip portion of the locking portion 34, including the inclined surface 34A, is positioned so as to protrude from the inside of the main body 31 into the groove portion 33A by the biasing force of the coil spring 34C. The locking portion 34 also includes an operating portion 34B. The operating portion 34B extends in the x-positive direction from a base portion of the locking portion 34 extending in the y-direction, and a portion of the operating portion 34B protrudes from a guide hole 35 provided in the underside 31D of the main body 31. The guide hole 35 is formed larger than the y-direction dimension of the protruding portion of the operating portion 34B, thereby allowing the operating portion 34B to move in the y-direction along the guide hole 35. The user can move the locking portion 34 in the y-direction by operating the operating portion 34B in the y-direction, thereby allowing the inclined surface 34A protruding into the groove portion 33A to move forward and backward into the groove portion 33A.

[0034] <Electronic lock installation and removal procedures> Fig. 5 is a diagram illustrating a method for installing the electronic lock 1 in the first embodiment. As shown in Fig. 5, in the electronic lock installation structure 10 of the first embodiment, first, the base 20 is installed on the electronic lock 1, and then the thumb-turn device 30 is installed on the door 40. Next, the ribs 27A and 27B of the base 20 are aligned from above to a position where they can engage with the grooves 33A and 33B of the thumb-turn device 30 (alignment step). Then, from this aligned state, the base 20 is slid downward in the extension direction of the ribs 27A and 27B and the grooves 33A and 33B, thereby engaging the ribs 27A and 27B with the grooves 33A and 33B (engagement step), and the base 20 is connected to the thumb-turn device 30. Furthermore, locking portion 34 of thumb-turn device 30 is engaged with locking recess 28 of base 20, and base 20 is fixed so as not to be able to move upward, thereby maintaining the engagement state between ribs 27A, 27B and grooves 33A, 33B (engagement holding step). As a result, base 20 and thumb-turn device 30 are connected and fixed, and electronic lock 1 is thereby attached to thumb-turn device 30 of door 40.

[0035] 6 is a schematic diagram illustrating the operation of the locking portion 34 in the first embodiment. Fig. 6 shows the process of fixing the base 20 by the locking portion 34 in three stages: (A), (B), and (C). First, as shown in Fig. 6(A), the rib portion 27A of the base 20 moves downward while engaging with the groove portion 33A of the thumb turn device 30, and the lower corner portion 27A1 of the rib portion 27A abuts against the inclined surface 34A of the locking portion 34.

[0036] When an external force is applied to move base 20 further downward while lower end corner 27A1 is in contact with inclined surface 34A, locking portion 34 is pressed in the y-positive direction by the pressing force from inclined surface 34A, and eventually, as shown in Figure 6(B), locking portion 34 moves in the y-positive direction against the biasing force of coil spring 34C. As a result, inclined surface 34A retreats into main body 31, and rib portion 27A becomes able to move further in the x-positive direction than locking portion 34.

[0037] 6(C), when base 20 is lowered to a position where locking recess 28 provided in rib portion 27A faces inclined surface 34A, locking portion 34 is no longer subjected to the pressing force from rib portion 27A, and therefore advances again into groove portion 33A due to the biasing force of coil spring 34C, and the tip of locking portion 34 engages with locking recess 28. At this time, the surface of the lower end of locking portion 34 facing the positive x-direction faces the surface of the lowermost part of the locking recess facing the negative x-direction, so that base 20 is prevented from being pulled out upward by locking portion 34 and is fixed to thumbturn device 30.

[0038] That is, in the first embodiment, the locking portion 34 of the thumb-turn device 30 and the locking recess 28 of the base 20 function as a "locking mechanism that maintains the engaged state between the electronic lock-side engaging portion and the thumb-turn-side engaging portion."

[0039] In the electronic lock mounting structure 10 of the first embodiment, the locking portion 34 is provided on the thumb-turn device 30 and the locking recess 28 is provided on the base 20, but the locking portion 34 may be provided on the base 20 side and the locking recess 28 on the thumb-turn device 30 side. Also, a locking mechanism other than the configuration in which the locking portion 34 and the locking recess 28 engage with each other may be applied.

[0040] 7 is a side view showing the state in which the base 20 is attached to the thumb turn device 30 in the first embodiment. As shown in FIG. 7, in the attached state, the thumb turn device 30 is completely housed inside the base 20.

[0041] Fig. 8 is a rear perspective view showing the state in which base 20 is attached to thumb-turn device 30 in the first embodiment. As shown in Fig. 8, when base 20 is attached to thumb-turn device 30, the end face of base 20 on the negative z direction side and back surface 31F of thumb-turn device 30 are flush with each other.

[0042] Figure 9 is a rear perspective view in which the base 20 is made transparent from Figure 8. As shown in Figure 9, when the base 20 is attached to the thumb-turn device 30, the knob 32 of the thumb-turn device 30 is engaged with the groove 51 of the thumb-turn holder 5 of the electronic lock 1, whereby the electronic lock 1 is connected to the thumb-turn device 30 in an operable manner.

[0043] In the example shown in Figure 9 etc., the back surface 31F of the main body 31 of the thumb-turn device 30 is shown as being open, but the opening formed on the back surface 31F may also be closed with a member such as a lid (see Figure 12(A)). Also, in the example shown in Figure 9 etc., a linear member formed of a wire or the like is installed in the gap between the housing 2 of the electronic lock 1 and the thumb-turn holder 5. This linear member is an element for fixing the rotation of the thumb-turn holder 5 so that the groove portion 51 of the thumb-turn holder 5 does not shift relative to the knob portion 32 of the thumb-turn device 30 when the thumb-turn holder 5 is assembled to the thumb-turn device 30. This linear member is removed after the thumb-turn holder 5 is assembled to the thumb-turn device 30.

[0044] Fig. 10 is a bottom view showing a state in which base 20 is attached to thumb-turn device 30. As shown in Fig. 10, rib portions 27A and 27B of base 20 are engaged with groove portions 33A and 33B of thumb-turn device 30, respectively.

[0045] Fig. 11 is a cross-sectional view taken along line AA in Fig. 7. As shown in Fig. 11, when base 20 is attached to thumb-turn device 30, locking portion 34 of thumb-turn device 30 is biased to protrude in the negative y direction as indicated by arrow A and is engaged with locking recess 28 of base 20. This restricts upward movement of base 20 relative to thumb-turn device 30.

[0046] To detach base 20 from thumb-turn device 30 from this state, first, operating portion 34B of locking portion 34 is operated to move in the y-positive direction as shown by arrow B, and then the entire locking portion 34 also moves in the y-positive direction as shown by arrow C, and inclined surface 34A is retracted inside thumb-turn device 30. This disengages locking portion 34 from locking recess 28, disengaging ridges 27A and 27B from grooves 33A and 33B (disengagement step), and base 20 can be moved upward from thumb-turn device 30. In this state, base 20 is moved upward as shown by arrow D, disengaging ridges 27A and 27B from grooves 33A and 33B (detachment step), and as a result, base 20 (and electronic lock 1) can be removed from thumb-turn device 30.

[0047] FIG. 12 shows variations in attachments for the thumb-turn device 30. Four types of attachments, 36A, 36B, 36C, and 36D, are illustrated in FIG. 12 (A), (B), (C), and (D). As shown in FIG. 12, various attachments 36A to 36D can be attached to the back surface 31F of the main body 31 of the thumb-turn device 30. As described above, the thumb-turn device 30 replaces the existing thumb-turn device 41 and is connected to the locking box 50 of the door 40. The shape of the connecting portion of the locking box 50 varies depending on the manufacturer of the locking box 50. Therefore, the thumb-turn device 30 of this embodiment is configured to be attachable to various types of locking box 50 by attaching appropriate attachments 36A to 36D to the main body 31 according to the shape of the connecting portion of the locking box 50. This makes the electronic lock mounting structure 10 of this embodiment applicable to locking box 50 from various manufacturers, improving versatility.

[0048] In the electronic lock mounting structure 10 of the first embodiment, the electronic lock 1 is mounted to the thumb-turn device 30 by sliding the base 20 on which the electronic lock 1 is mounted vertically downward relative to the thumb-turn device 30 mounted to the door 40, but the direction of the sliding movement is not limited to vertically downward. The sliding direction need only be a predetermined direction along the extension direction of the surface 40A on which the thumb-turn device 30 is mounted. For example, the base 220 may be slid horizontally (y direction) to engage with the thumb-turn device 30.

[0049] As described above, the electronic lock mounting structure 10 according to the first embodiment includes ribs 27A, 27B (electronic lock-side engaging portions) provided on the base 20 attached to the electronic lock 1, and grooves 33A, 33B (thumb-turn-side engaging portions) provided on the thumb-turn device 30, which engage with the ribs 27A, 27B as the ribs 27A, 27B move. The electronic lock 1 is mounted to the thumb-turn device 30 via the base 20 by the ribs 27A, 27B engaging with the grooves 33A, 33B. When the electronic lock 1 is mounted to the thumb-turn device 30, the ribs 27A, 27B and the grooves 33A, 33B can move relative to each other.

[0050] With this configuration, the electronic lock 1 is attached to the thumb-turn device 30, rather than being attached to the surface of the door 40 by adhesive or the like as in the past. The attachment is achieved by the engagement of the ribs 27A, 27B of the base 20 with the grooves 33A, 33B of the thumb-turn device 30. Furthermore, when the electronic lock 1 is attached to the thumb-turn device 30, the ribs 27A, 27B and the grooves 33A, 33B are movable relative to each other. Therefore, compared to the conventional attachment method using adhesive or the like, the electronic lock 1 can be easily attached and detached. Furthermore, the grooves 33A, 33B also function as attachment position guides, allowing the electronic lock 1 to be more reliably attached to the desired position. Therefore, the retrofit-type electronic lock 1 can be easily attached to and detached from the thumb-turn device 30 of the door 40. Furthermore, since the ribs 27A, 27B of the base 20 are engaged with the grooves 33A, 33B of the thumb-turn device 30, they are unlikely to come off even when an external force is applied, and the electronic lock 1 can be firmly attached to the thumb-turn device 30.

[0051] Furthermore, in the electronic lock mounting structure 10 of the first embodiment, the "movement" for engaging the ribs 27A, 27B (electronic lock side engaging portions) with the grooves 33A, 33B (thumbturn side engaging portions) is a sliding movement in a predetermined direction (for example, vertically downward). With this configuration, by aligning the ribs 27A, 27B with the grooves 33A, 33B of the thumbturn device 30, the electronic lock 1 can be mounted to the thumbturn device 30 simply by inserting the base 20 from above. Furthermore, when the electronic lock 1 is mounted to the thumbturn device 30, the electronic lock 1 can be removed from the thumbturn device 30 simply by removing the base 20 upward. This makes it even easier to attach and detach the electronic lock 1 from the thumbturn device 30.

[0052] Furthermore, in the electronic lock mounting structure 10 of the first embodiment, the ribs 27A, 27B (electronic lock side engaging portions) are provided on the base 20 installed on the back side of the electronic lock 1. With this configuration, there is no need to directly provide an engaging structure with the thumbturn device 30 on the electronic lock 1, so even existing add-on type electronic locks that were not originally designed to engage with the thumbturn device 30 can be attached to the thumbturn device 30 by attaching the base 20. Therefore, existing add-on type electronic locks can be applied, improving versatility.

[0053] In the first embodiment, the base 20 and the electronic lock 1 are separate components, but the base 20 and the electronic lock 1 may be integrated. In this case, it can also be expressed as "the ribs 27A and 27B (electronic lock side engagement parts) are provided on the electronic lock 1."

[0054] The electronic lock mounting structure 10 of the first embodiment is also provided with a locking portion 34 and a locking recess 28 as a locking mechanism that maintains the engagement between the ribs 27A, 27B (electronic lock side engaging portions) and the grooves 33A, 33B (thumb turn side engaging portions). This configuration prevents the base 20 from coming off the thumb turn device 30, making it possible to more securely mount the electronic lock 1 to the thumb turn device 30.

[0055] Furthermore, in the electronic lock mounting structure 10 of the first embodiment, the horizontal width (y direction) of the thumb-turn device 30 when installed on the door 40 is preferably 30 mm to 100 mm. If it is less than 30 mm, there is a risk that the electronic lock 1 (base 20) engaged with the thumb-turn device 30 will rattle. If it exceeds 100 mm, there is a risk that the thumb-turn device 30 will interfere with the frame of the door 40.

[0056] [Second embodiment] The second embodiment will be described with reference to Figures 13 to 16. Figure 13 is an exploded perspective view of the thumb-turn device 70 of the electronic lock mounting structure 10A according to the second embodiment, viewed from the rear side. Figure 14 is a plan view of the base 60 of the electronic lock mounting structure 10A according to the second embodiment, viewed from the rear side. Figure 15 is a diagram illustrating a method for mounting the electronic lock 1 in the second embodiment. Figure 16 is a rear perspective view showing the state in which the base 60 is mounted to the thumb-turn device 70 in the second embodiment.

[0057] <Outline of the electronic lock mounting structure 10A> The electronic lock mounting structure 10A according to the second embodiment is similar to the first embodiment in that a base 60 on which an electronic lock 1 is mounted is engaged with a thumbturn device 70 attached to a door 40. However, the electronic lock mounting structure 10A according to the second embodiment differs from the first embodiment in the engagement configuration between the base 60 and the thumbturn device 70. More specifically, in the electronic lock mounting structure 10A according to the second embodiment, the base 60 engages with the thumbturn device 70 by rotating and moving about the axis of the rotation shaft 4.

[0058] As shown in Figure 13, the thumb turn device 70, like the existing thumb turn 41, has a main body 71 and a knob portion 72, and by rotating the knob portion 72, the box lock 50 can be operated to unlock and lock the door 40.

[0059] The main body 71 is formed in a generally cylindrical shape and has a peripheral surface 71A that is disposed around the rotation axis of the knob portion 72. A plurality of engagement grooves 73 (four in the example of FIG. 13) are formed in the peripheral surface 71A at generally equal intervals along the circumferential direction. The engagement grooves 73 are formed by being recessed from the peripheral surface 71A toward the inside of the main body 71. The engagement grooves 73 function as the "thumb turn side engagement portion."

[0060] The fitting groove 73 includes an axial groove 73A extending along the axial direction (z direction) of the rotation shaft of the knob portion 72 and a circumferential groove 73B extending along the circumferential direction of the circumferential surface 71A. The axial groove 73A is formed over the entire z direction from the end of the circumferential surface 71A on the z positive side to the end on the z negative side. The circumferential groove 73B is formed within a range of a predetermined width from the end of the circumferential surface 71A on the z positive side. The end of the axial groove 73A on the z positive side is connected to one end of the circumferential groove 73B. In other words, the fitting groove 73 is formed in a substantially L-shape when viewed from the radial outside of the main body 71. The axial groove 73A is formed so that the circumferential width of the main body 71 is larger than the width of a protrusion 67 of the base 60, which will be described later. The circumferential groove 73B is formed so that the axial width of the main body 71 is larger than the thickness of a protrusion 67 of the base 60, which will be described later.

[0061] As shown in Figure 14, the base 60 has a back plate portion 61, side plate portions 63, 64, and bottom plate portion 65 similar to the back plate portion 21, side plate portions 23, 24, and bottom plate portion 25 of the first embodiment. A circular opening 66 is formed in the lower part of the back plate portion 61 of the base 60. The shape of the opening 66 is formed to be the same as the outer shape of the thumb turn device 70, and is formed so that the thumb turn device 70 can be fitted in. The circular opening 66 has multiple (four in the example of Figure 14) protrusions 67 formed at approximately equal intervals along the circumferential direction of the peripheral surface. The protrusions 67 are formed to protrude from the peripheral surface of the opening 66 toward the center. These protrusions 67 function as the "electronic lock side engagement portion."

[0062] <Electronic Lock 1 Installation and Removal Procedure> As shown in FIG. 15 , in the electronic lock mounting structure 10A of the second embodiment, a base 60 is attached to an electronic lock 1, and a thumb-turn device 70 is attached to a door 40. Then, with the protrusion 67 of the base 60 engaged with the axial groove 73A of the engagement groove 73 of the thumb-turn device 70 from the front side (the z-direction side) of the door 40, the base 60 is slid in the extension direction of the axial groove 73A as shown by arrow A in FIG. 15 . Furthermore, when the protrusion 67 of the base 60 reaches the rear end of the thumb-turn device 70, the base 60 is rotated around the thumb-turn axis as shown by arrow B in FIG. 15 , and the protrusion 67 of the base 60 rotates in the circumferential direction of the peripheral surface 71A along the circumferential groove 73B of the engagement groove 73. Then, when the protrusion 67 of the base 60 reaches the end of the circumferential groove 73B, the base 60 is connected to the thumb-turn device 70.

[0063] At this time, the circumferential groove 73B of the engagement groove 73 restricts the movement of the protrusion 67 of the base 60 in the positive z direction in the axial direction, and the surface 40A of the door 40 also restricts the movement in the negative z direction.

[0064] That is, in the second embodiment, the circumferential groove 73B of the engagement groove 73 and the protrusion 67 of the base 60 function as a "lock mechanism that maintains the engaged state between the electronic lock side engaging portion and the thumb turn side engaging portion."

[0065] In the electronic lock mounting structure 10A of the second embodiment, a configuration in which the circumferential groove 73B is provided on the thumb-turn device 70 and the protrusion 67 is provided on the base 60 has been exemplified, but a configuration in which the circumferential groove 73B is provided on the base 60 side and the protrusion 67 is provided on the thumb-turn device 70 side may also be used. Also, a locking mechanism other than a configuration in which the circumferential groove 73B and the protrusion 67 engage with each other may also be applied.

[0066] As shown in FIG. 16, when base 60 is attached to thumb-turn device 70, the end face of base 60 on the negative z side and the end face of thumb-turn device 70 on the negative z side are flush with each other.

[0067] In the example shown in Figure 16, the back surface of the main body 71 of the thumb turn device 70 on the negative z-direction side is shown as being open, but the opening formed on the back surface may also be closed with a member such as a lid.

[0068] 16, to remove the base 60 from the thumb-turn device 70, first rotate the base 60 in the direction opposite to the arrow B shown in FIG. 15, so that the protrusion 67 of the base 60 rotates along the circumferential direction of the peripheral surface 71A along the circumferential groove 73B of the mating groove 73. When the protrusion 67 of the base 60 reaches the end of the circumferential groove 73B, the base 60 is slid in the direction opposite to the arrow A shown in FIG. 15, so that the protrusion 67 of the base 60 moves in the positive z direction along the axial groove 73A of the mating groove 73. When the protrusion 67 of the base 60 reaches the front end of the thumb-turn device 70, the base 60 is removed from the thumb-turn device 70.

[0069] In the second embodiment, the base 60 and the electronic lock 1 are separate components, but the base 60 and the electronic lock 1 may be integrated. In this case, it can also be expressed as "the protrusion 67 (electronic lock side engagement portion) is provided on the electronic lock 1."

[0070] [Third embodiment] The third embodiment will be described with reference to Figs. 17 to 22. Fig. 17 is an exploded perspective view of an electronic lock mounting structure 10B according to the third embodiment, viewed from the rear side. Fig. 18 is a plan view of the thumb-turn device 90 of the electronic lock mounting structure 10B, viewed from the rear side. Fig. 19 is an exploded perspective view of the thumb-turn device 90 of the electronic lock mounting structure 10B according to the third embodiment, viewed from the front side. Fig. 20 is a rear perspective view showing the state in which the base 80 is attached to the thumb-turn device 90 in the third embodiment. Fig. 21 is a schematic view explaining the operation of a locking section 94A in the third embodiment. Fig. 22 is a cross-sectional view showing the state in which the base 80 is attached to the thumb-turn device 90 in the third embodiment.

[0071] <Outline of the electronic lock mounting structure 10B> The electronic lock mounting structure 10B according to the third embodiment is similar to the first and second embodiments in that a base 80 to which an electronic lock 1 is attached is engaged with a thumb-turn device 90 attached to a door 40. However, the electronic lock mounting structure 10B according to the third embodiment differs from the first and second embodiments in the engagement configuration between the base 80 and the thumb-turn device 90. More specifically, the base 80 is engaged with the thumb-turn device 90 by sliding the base 80 in the direction facing the door 40 (z direction).

[0072] As shown in Figures 17 and 19, the thumb turn device 90, like the existing thumb turn 41, has a main body 91 and a knob portion 92, and by rotating the knob portion 92, the box lock 50 can be operated to unlock and lock the door 40.

[0073] Similar to the first embodiment, the main body 91 is formed in a rectangular prism shape and includes a front surface 91E facing the z-positive direction and provided with a knob portion 92, a back surface 91F facing the z-negative direction and in contact with the surface 40A of the door 40, a side surface 91A facing the y-negative direction, a side surface 91B facing the y-positive direction, an upper surface 91C facing the x-negative direction, and a lower surface 91D facing the x-positive direction. As shown in FIGS. 17 to 19, grooves 93A, 93B, and 93D are formed in the side surfaces 91A and 91B and the lower surface 91D along the z-direction. The grooves 93A, 93B, and 93D are recessed from the side surfaces 91A and 91B and the lower surface 91D toward the interior of the main body 91. These grooves 93A, 93B, and 93D function as "thumb-turn side engagement portions."

[0074] A similar groove may be provided on the upper surface 91C of the main body 91.

[0075] As shown in FIG. 17 , the base 80 has a back plate 81, side plate 83, 84, and bottom plate 85 similar to the back plate 21, side plate 23, 24, and bottom plate 25 of the first embodiment. A rectangular opening 86 is formed in the lower part of the back plate 81 of the base 80. The shape of the opening 86 is formed to be the same as the outer shape of the thumb-turn device 90 and is formed so that the thumb-turn device 90 can be fitted therein. The rectangular opening 86 has protrusions 87A, 87B, and 87D formed on three of its four sides that face the side surfaces 91A, 91B, and bottom surface 91D of the thumb-turn device 90. The protrusions 87A, 87B, and 87D are formed to protrude from the periphery of the opening 86 toward the center. These protrusions 87A, 87B, and 87D function as "electronic lock-side engagement portions."

[0076] Additionally, grooves 88A and 88B are provided adjacent to protrusions 87A and 87B in opening 86. Grooves 88A and 88B are recessed outward from the circumferential surface of opening 86. Grooves 88A and 88B are formed extending from the end of opening 86 on the negative z-axis side toward the positive z-axis side. When base 80 is mated with thumb-turn device 90, tip ends 94A4 and 94B4 of locking portions 94A and 94B of thumb-turn device 90, which will be described later, enter grooves 88A and 88B.

[0077] 17 to 19, the thumb-turn device 90 is provided with locking portions 94A and 94B. The locking portions 94A and 94B are disposed so as to protrude from the inside of the main body 91 into the groove portions 93A and 93B.

[0078] The locking portions 94A, 94B are made of plate material having a thickness thinner than the thickness of the main body 91 in the z direction. Holes 95A, 95B extending in the x direction are formed in the approximate centers of the side surfaces 91A, 91B of the main body 91 in the z direction. The holes 95A, 95B are approximately perpendicular to the grooves 93A, 93B. The width of the holes 95A, 95B in the z direction is greater than the thickness of the locking portions 94A, 94B in the z direction, and the locking portions 94A, 94B are inserted into the holes 95A, 95B so as to be able to advance and retreat.

[0079] As shown in FIGS. 18 and 19, the locking portion 94A includes a rotating portion 94A1, a linear arm portion 94A2 extending from the rotating portion 94A1 toward the x-positive direction, and a tip portion 94A4 extending from the tip of the arm portion 94A2 in a direction generally perpendicular to the x-positive direction (toward the y-positive direction). A sloped surface 94A3 is formed on the z-positive side of the arm portion 94A2, such that the sloped surface 94A3 transitions toward the z-negative direction as it advances toward the y-positive direction. The rotating portion 94A1 is journaled on a rotation shaft (not shown) extending in the z-direction within the main body 91, and the tip portion 94A4 is biased in a direction extending outward from the main body 91 (counterclockwise in FIG. 18). Thus, in a normal state where no external force is applied, the locking portion 94A is configured such that the tip portion 94A4 protrudes outward (toward the y-positive direction) beyond the side surface 91A, and portions of the arm portion 94A2 and the sloped surface 94A3 extend into the groove portion 93A.

[0080] Similarly, the locking portion 94B has a rotating portion 94B1, a linear arm portion 94B2 extending from the rotating portion 94B1 toward the negative x-direction, and a tip portion 94B4 extending from the tip of the arm portion 94B2 in a direction generally perpendicular to the x-direction (negative y-direction). A sloped surface 94B3 is formed on the surface of the arm portion 94B2 facing the positive z-direction, such that the sloped surface 94B3 becomes more inclined toward the negative z-direction as it advances toward the negative y-direction. The rotating portion 94B1 is journaled on a rotation shaft (not shown) extending in the z-direction within the main body 91, and the tip portion 94B4 is biased in a direction extending outward from the main body 91 (counterclockwise in FIG. 18). Thus, in a normal state where no external force is applied, the locking portion 94B is configured such that the tip portion 94B4 protrudes outward (negative y-direction) beyond the side surface 91B, and portions of the arm portion 94B2 and the sloped surface 94B3 extend into the groove portion 93B.

[0081] <Electronic lock installation and removal procedures> As shown in Fig. 17, in the electronic lock mounting structure 10B of the third embodiment, a base 80 is attached to the electronic lock 1, and a thumb-turn device 90 is attached to the box lock 50 of the door 40. Then, with the protrusions 87A, 87B, and 87D of the base 80 engaged with the grooves 93A, 93B, and 93D of the thumb-turn device 90 from the front side (positive z direction), the base 80 is slid toward the door 40 (negative z direction indicated by the arrow in Fig. 17) along the extension direction of the grooves 93A, 93B, and 93D, thereby connecting the base 80 to the thumb-turn device 90. Finally, the locking portions 94A and 94B of the thumb-turn device 90 secure the base 80 so that it cannot move toward the front side (detachment side), thereby connecting and fixing the base 80 and the thumb-turn device 90, and the electronic lock 1 is attached to the thumb-turn device 90 of the door 40.

[0082] 21 shows the process of fixing the base 80 by the locking portions 94A and 94B in three stages: (A), (B), and (C). Also, while Fig. 21 illustrates only one locking portion 94A of the pair of locking portions 94A and 94B, the other locking portion 94B operates in the same manner.

[0083] First, as shown in Figure 21(A), the convex portion 87A of the base 80 moves in a direction approaching the door 40 (negative z direction) while engaging with the groove portion 93A of the thumb turn device 90, and the tip corner portion 87A1 of the convex portion 87A abuts against the inclined surface 94A3 of the lock portion 94A.

[0084] When an external force is applied so that the base 80 moves further toward the door 40 while the tip corner 87A1 is in contact with the inclined surface 94A3, the locking portion 94A is pushed in the negative y direction by the pressing force from the inclined surface 94A3, and eventually, as shown in Figure 21(B), the locking portion 94A moves in the negative y direction against the biasing force applied to the rotating portion 94A1. As a result, the inclined surface 94A3 retreats inside the main body 91, and the protrusion 87A becomes able to move further toward the door 40 than the locking portion 94A.

[0085] 21(C), when base 80 moves to a position where the end of protrusion 87A on the positive z direction side (rear end in the direction of travel) is closer to door 40 than locking portion 94A, locking portion 94A is no longer subjected to the pressing force from protrusion 87A, and so advances again into groove 93A due to the biasing force applied by rotating portion 94A1. At this time, the surface of locking portion 94A facing the negative z direction and the surface of protrusion 87A facing the positive z direction are positioned opposite each other, so base 80 is prevented from being removed in the positive z direction (removal direction) by locking portion 94A, and is fixed to thumbturn device 90.

[0086] In other words, in the third embodiment, the locking portions 94A, 94B of the thumb turn device 90 and the protrusions 87A, 87B of the base 80 function as a "locking mechanism that maintains the engagement state between the electronic lock side engagement portion and the thumb turn side engagement portion."

[0087] In the electronic lock mounting structure 10B of the third embodiment, the configuration in which the locking portions 94A, 94B are provided on the thumb-turn device 90 and the protrusions 87A, 87B are provided on the base 80 has been exemplified, but the configuration in which the locking portions 94A, 94B are provided on the base 80 side and the protrusions 87A, 87B are provided on the thumb-turn device 90 side may also be adopted. Also, a locking mechanism other than the configuration in which the locking portions 94A, 94B engage with the protrusions 87A, 87B may also be applied.

[0088] As shown in FIG. 20, when the base 80 is attached to the thumb-turn device 90, the end face of the base 80 on the negative z side and the rear surface 91F of the thumb-turn device 90 are flush with each other.

[0089] In the example shown in Figure 20, etc., the back surface 91F of the main body 91 of the thumb turn device 90 is shown as being open, but the opening formed on the back surface 91F may also be covered with a member such as a lid.

[0090] 22, when base 80 is attached to thumb-turn device 90, convex portions 87A, 87B of base 80 are positioned closer to door 40 (toward the front of the paper in FIG. 22) than locking portions 94A, 94B of thumb-turn device 90. When base 80 is to be detached from thumb-turn device 90 from this state, locking portions 94A, 94B must be moved inside main body 91 so that convex portions 87A, 87B of base 80 can be removed from grooves 93A, 93B.

[0091] To enable such operation of locking portions 94A, 94B, in the third embodiment, through-holes 89A, 89B are provided that penetrate from the side surfaces on the y-positive and y-negative sides of back plate portion 81 of base 80 to opening 86. Through-holes 89A, 89B are opened at positions of tip ends 94A4, 94B4 of locking portions 94A, 94B in the bottom surfaces of groove portions 93A, 93B.

[0092] In the third embodiment, when removing the base 80 from the thumb-turn device 90 from the state shown in Fig. 20, a rod or the like is inserted through the through-holes 89A, 89B, and the rod is used to press the tip portions 94A4, 94B4 of the locking portions 94A, 94B, moving the locking portions 94A, 94B into the main body 91. This releases the engagement between the protrusions 87A, 87B of the base 80 and the locking portions 94A, 94B, making it possible to move the base 80 in the positive z direction from the thumb-turn device 90. In this state, the base 80 (and the electronic lock 1) can be removed from the thumb-turn device 90 by moving the base 80 in the positive z direction (the opposite side of the arrow shown in Fig. 17).

[0093] Furthermore, in the third embodiment, the base 80 and the electronic lock 1 are configured as separate bodies, but the base 80 and the electronic lock 1 may be integrated. In this case, it can also be expressed as "the protrusions 87A, 87B, 87D (electronic lock side engagement portions) are provided on the electronic lock 1."

[0094] The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Design modifications to these specific examples made by a person skilled in the art as appropriate are also included within the scope of the present disclosure as long as they comprise the features of the present disclosure. The elements of the above-described specific examples, as well as their arrangement, conditions, shape, etc., are not limited to those exemplified and can be modified as appropriate. The elements of the above-described specific examples can be combined in various ways as appropriate, as long as no technical contradictions arise. [Explanation of symbols]

[0095] 1...electronic lock, 10, 10A, 10B...electronic lock mounting structure, 20, 60, 80...base, 27A, 27B...ribbed portion (electronic lock side engagement portion), 30, 70, 90...thumb turn device, 33A, 33B...groove portion (thumb turn side engagement portion), 36A, 36B, 36C, 36D...attachment, 67...protrusion portion (electronic lock side engagement portion, locking mechanism), 73...engagement groove (thumb turn side engagement portion), 73B...circumferential groove (locking mechanism), 87A, 87B...protrusion portion (electronic lock side engagement portion, locking mechanism), 93A, 93B...groove portion (thumb turn side engagement portion), 94A, 94B...locking portion (locking mechanism)

Claims

1. an electronic lock side engaging portion provided on the electronic lock; a thumb-turn side engaging portion provided in the thumb-turn device and engaging with the electronic lock side engaging portion by movement of the electronic lock side engaging portion; Equipped with When the electronic lock is attached to the thumb-turn device, the electronic lock side engaging portion and the thumb-turn side engaging portion are movable relative to each other, An attachment is provided on the thumb turn shaft side of the thumb turn device so that the thumb turn device can be connected to multiple types of box locks. Electronic lock mounting structure.

2. An electronic lock side engagement portion provided on the electronic lock; An opening provided in a base installed on the back side of the electronic lock; a thumbturn-side engaging portion that is provided on a thumbturn device having an outer shape formed in a similar shape to the opening so that it can be fitted into the opening, and that engages with the electronic lock-side engaging portion as the electronic lock-side engaging portion moves; Equipped with When the electronic lock is attached to the thumb-turn device, the electronic lock side engaging portion and the thumb-turn side engaging portion are movable relative to each other. Electronic lock mounting structure.

3. The movement is a sliding movement in one predetermined direction.

3. The electronic lock mounting structure according to claim 1 or 2.

4. The movement is a rotational movement around the axis of the thumb turn shaft.

3. The electronic lock mounting structure according to claim 1 or 2.

5. The electronic lock side engaging portion is provided on a base installed on the back side of the electronic lock, The electronic lock mounting structure according to any one of claims 1 to 4.

6. A locking mechanism is provided to maintain the engagement between the electronic lock side engaging portion and the thumb turn side engaging portion. The electronic lock mounting structure according to any one of claims 1 to 5.

7. The horizontal width of the thumb turn device when installed on the door is 30 mm to 100 mm. The electronic lock mounting structure according to any one of claims 1 to 6.

8. The electronic lock has a thumb turn side engaging portion that engages with the electronic lock side engaging portion when the electronic lock side engaging portion moves. The electronic lock can be attached by engaging the electronic lock side engaging portion with the thumb turn side engaging portion, Furthermore, an attachment is provided on the thumb turn shaft side to enable connection with multiple types of box locks. Thumb turn device.

9. An electronic lock installation method for installing an electronic lock on a thumb turn device, comprising: In order to enable the thumbturn device to be connected to multiple types of locks, an appropriate attachment is attached from among the attachments provided on the thumbturn shaft side of the thumbturn device, and the thumbturn device is connected to a door lock in place of an existing thumbturn, an alignment step of aligning an electronic lock side engaging portion provided on the electronic lock to a position where it can engage with a thumb turn side engaging portion provided on the thumb turn device; an engaging step of moving the electronic lock side engaging portion to engage with the thumb turn side engaging portion; an engagement holding step in which an engagement state between the electronic lock side engagement portion and the thumb turn side engagement portion is maintained by a lock mechanism provided in the thumb turn device; An electronic lock installation method including:

10. An electronic lock removal method for removing the electronic lock attached to the thumb turn device by the electronic lock attachment method described in claim 9 from the thumb turn device, comprising: a disengagement step in which the lock mechanism is operated to disengage the electronic lock side engagement portion from the thumb turn side engagement portion; a disengaging step of moving the electronic lock side engaging portion to disengage it from the thumb turn side engaging portion; A method for removing an electronic lock.

Images