Power transmission mechanism of electric thumbturn

Abstract

For example, even if a user is currently using an existing lock of either the "DA type" or "TE type," an electric thumbturn (electric lock) can be retrofitted to the interior wall of the door, taking the user's wishes into consideration. [Solution] The power transmission mechanism X of the electric thumbturn consists of a lock case 5 fixed to the internal space 2 on the end side of the opening / closing body 1, a lock case equipped with a locking / unlocking mechanism for extending and retracting a locking piece 10 inside the lock case, an electric thumbturn 20 fixed via a mounting base plate member 22 that abuts against the indoor wall surface 1a of the opening / closing body, and a two-article connection adapter 30 interposed between the driven rotating body 11, whose shaft-penetrating wall portion constitutes the locking / unlocking mechanism of the lock, and the mounting base plate member 22, and which transmits the driving force of the electric thumbturn 20 to the driven rotating body 11 of the locking / unlocking mechanism.

Description

Technical Field

[0001] The present invention relates to a power transmission mechanism of an electric thumb turn (electric lock) or an attachment structure of an electric thumb turn (electric lock).

Background Art

[0002] In relation to the main problems of the invention, it is necessary to understand the configurations of an "electric thumb turn (electric lock)" having an electric motor and a mechanical "existing lock". Therefore, the electric thumb turn (electric lock) and the mechanical existing lock will be described.

[0003] First, for the former electric thumb turn, a receiving unit receives identification information output from a portable terminal (so-called smartphone) such as a switch unit and a card-type storage medium having identification information, or a numeric keypad for inputting identification information (password), or an input unit such as a reading device for reading identification information (biometric information or facial feature amounts) inputs the identification information. The received or input information is compared with the registration information previously stored in the storage unit. When the comparison is consistent, the control unit gives a control signal to the drive motor, whereby the drive motor is started, and drive-side gears (transmission gears) such as a drive gear provided on the output shaft thereof, an intermediate gear meshing with this, and an output gear rotate. By the driving force, a locking piece (so-called dead bolt or cam dead bolt) constituting the locking and unlocking mechanism protrudes and retracts with respect to a receiving fitting (anti-theft, strike) on the door frame side with reference to the front plate of a lock case provided in the internal space of the door (hereinafter, this type of electric lock is herein referred to as an "electric thumb turn" for convenience).

[0004] Next, it is a well-known fact that the latter type of mechanical lock (hereinafter simply referred to as "existing lock") is attached to the wall surface on the outside of the door and includes an outdoor operating member (generally called a "cylinder lock") in which a movable inner cylinder enclosed in a fixed outer cylinder rotates due to the force of operating the key, and an indoor operating member (generally called a "thumbturn unit") attached to the wall surface on the inside of the door and in which a movable thumbturn shaft (rotating connecting shaft) enclosed in a fixed thumbturn outer cylinder rotates due to the force of operating the thumbturn knob that constitutes the indoor member.

[0005] Here, when the internal and external operating members of the "existing lock" are attached to the internal and external wall surfaces of the door, respectively, they are referred to as "DA type" and "TE type." The terms "DA type" and "TE type" are abbreviated terms used by some of those skilled in the art and are not appropriate to use in this specification, but will be used here for convenience.

[0006] The aforementioned "DA type" is one in which the outer cylinders of the inner and outer operating members are fixed to the lock case using multiple (for example, a total of four) skewer-shaped fixing pins, and there are publications such as Japanese Patent Publication Nos. 2002-256733, 2015-19408, 2006-22598, and 10-311170.

[0007] On the other hand, the "TE type" involves passing a number of relatively long fixing screws (for example, a total of two) from the mounting base plate on the thumbturn unit side through the wide inner side wall of the lock case, screwing their tips into the female threads on the end face of the outer cylinder of the cylinder lock, and fixing the cylinder lock to the lock case while it is pulled towards the wide outer side wall of the lock case. Examples of such types include Japanese Patent Publication No. 2003-90149 and Japanese Patent Publication No. 2009-167741.

[0008] Now, existing locks can be broadly classified into "DA type," which uses a skewer-shaped fixing pin, and "TE type," which uses fixing screws. However, throughout the history of locks, up to the present day, there have been no lock mounting structures that combine parts from both the "DA type" and "TE type" (multiple skewer-shaped fixing pins and multiple fixing screws) to fix the outer cylinders of the internal and external operating members to the door or lock case. Possible reasons for this include the increased cost of the lock, the difficulty of packaging and managing the parts, and the difficulty of the installation work.

[0009] Incidentally, when installing an electric thumbturn on a door in a new building, or when a user requests the retrofitting of an electric thumbturn to an existing lock, it is desirable to minimize costs such as manufacturing costs, parts packaging and management costs, and installation costs as much as possible. Not only in the former case, but also in the latter case, for example, when a user requests that an electric thumbturn be attached to an existing lock that is currently in use, it is reasonable from the standpoint of reducing the aforementioned costs to utilize a part of the existing lock, such as the lock case and the locking / unlocking mechanism including the locking piece.

[0010] Regarding the configuration of the "connection adapter for two articles," which is a specific requirement of the present invention, the aforementioned Japanese Patent Publication No. 2009-167741 (Patent Document 6) describes an "electric lock mounting structure," and the drawings, such as Figures 1, 5, 8 to 10, describe a configuration in which an electric thumbturn 5 is attached to the lock case of a lock 3 fixed in the internal space of a door, and a single connection adapter 4 having a rotating shaft 41 is attached to it.

[0011] Although the aforementioned connection adapter 4 is described as having axial through-holes 42 formed in the upper and lower parts of a slightly thickened axial through-wall portion, as seen in the perspective view of Figure 1, and a disc-shaped mounting bracket 6 is indirectly fixed to the connection adapter 4 via multiple mounting screws 62 that screw into the through-holes 42 (paragraph 0024, Figure 4), the connection adapter 4 is a single component and is fixed to the lock 3 with screws (not shown) (paragraphs 0021, paragraphs 0024). Therefore, it can be understood that the only lock targeted by the electric lock mounting structure described in Patent Document 6 is the "TE type (screw-fixed type)" (the reference numerals are those of Patent Document 6). [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Japanese Patent Publication No. 2002-256733 [Patent Document 2] Japanese Patent Publication No. 2015-19408 [Patent Document 3] Japanese Patent Publication No. 2006-22598 [Patent Document 4] Japanese Patent Application Publication No. 10-311170 [Patent Document 5] Japanese Patent Publication No. 2003-90149 [Patent Document 6] Japanese Patent Publication No. 2009-167741 [Overview of the project] [Problems that the invention aims to solve]

[0013] In view of the above-mentioned problems of the conventional invention, the main objective of this invention is to minimize manufacturing costs, parts packaging and management costs, and installation costs as much as possible when installing an electric thumbturn on a door of a new building or when a user requests to retrofit an electric thumbturn to an existing lock.

[0014] In the latter case in particular, if it is possible to utilize parts of the existing lock, such as the lock case and the locking / unlocking mechanism including the locking piece, then by using existing parts as much as possible, it is possible to replace the existing lock with an electric thumbturn (electric lock) and automatically lock and unlock the locking piece using, for example, a portable terminal, various wearable terminals, or a card-type storage medium.

[0015] The aforementioned and other objectives and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for illustrative purposes only and do not limit the technical scope of the present invention. [Means for solving the problem]

[0016] The power transmission mechanism for an electric thumbturn of the present invention is characterized by comprising: a lock case fixed in the internal space on the end grain side of an opening / closing body, a lock equipped with a locking / unlocking mechanism for extending and retracting a locking piece inside the lock case; an electric thumbturn fixed via a mounting base plate member that abuts against the indoor wall surface of the opening / closing body; and a two-article connecting adapter whose shaft-penetrating wall portion is interposed between the driven rotating body constituting the locking / unlocking mechanism of the lock and the mounting base plate member, and which transmits the driving force of the electric thumbturn to the driven rotating body of the locking / unlocking mechanism (Claim 1).

[0017] Furthermore, in the power transmission mechanism for the electric thumbturn according to claim 1, the connection adapter comprises a first connection adapter that transmits the driving force of the electric thumbturn and has a rotating connection shaft in the first shaft through wall portion, and a second connection adapter that is joined to one side of the first connection adapter and has through holes for a plurality of fixing screws in the second shaft through wall portion, wherein the projection-shaped engaging portion of the second connection adapter is fixed to the lock case by a plurality of skewer-shaped fixing pins inserted from the insertion holes of the front plate, the connection adapter is used in combination with the first connection adapter and the second connection adapter, on the other hand, the connection adapter is used by using the first connection adapter alone when the first connection adapter is fixed to the outdoor side member with a plurality of fixing screws. (Claim 2)

[0018] Furthermore, in the power transmission mechanism for an electric thumbturn according to claim 1, the lock is such that the lock can be operated by rotating the thumbturn knob constituting the indoor side member in a predetermined direction, and the lock can be operated by rotating the inner cylinder of the cylinder constituting the outdoor side member with a key, and the power transmission mechanism is characterized in that it can use the lock case and the components of the lock and unlock mechanism of the lock (claim 3). [Effects of the Invention]

[0019] This invention makes it possible to minimize manufacturing costs, parts packaging and management costs, and installation costs as much as possible when installing an electric thumbturn on a new building door or when a user requests to retrofit an electric thumbturn to an existing lock.

[0020] Particularly, in the latter case, an electric thumb turn (electric lock) can be retrofitted to the lock case by directly using at least the lock case and the unlocking and locking mechanism including the locking piece of the "existing lock" of the "DA and TE types". As a result, it is possible to improve the convenience for users, reduce manufacturing costs, and facilitate the installation work. Moreover, regardless of whether the existing lock is of the "DA type (using a string-shaped fixed pin)" or the "TE type (using a fixed screw)", at least the driving force of the electric motor can be smoothly transmitted to the unlocking and locking mechanism of the lock via the rotary connection shaft.

Brief Description of the Drawings

[0021] Figs. 1 to 15 are explanatory diagrams showing the first embodiment of the present invention (the lock is of two types: DA type and TE type). [Figure 1] An exploded perspective view of the main members according to the first embodiment of the present invention, where the lock is of the DA type (details of the unlocking and locking mechanism inside the lock case are omitted). [Figure 2] An explanatory diagram of the main members constituting the power transmission mechanism. [Figure 3] (a) A perspective view of an example of the first connection adapter having a rotary connection shaft, seen from the electric thumb turn side. (b) In (a) above, a perspective view seen from the lock case side. [Figure 4] A perspective view of an example of the second connection adapter having a pair of protruding piece engagement portions up and down, seen from the electric thumb turn side. [Figure 5] A perspective view of the state where the connection adapters of the two articles are combined, seen from the electric thumb turn side. [Figure 6] In Fig. 5, a perspective view seen from the opposite side. [Figure 7] A longitudinal sectional explanatory diagram of the state where the connection adapter is attached to the lock case. [Figure 8] An explanatory diagram of fixing the connection adapter to the mounting substrate member with the shorter mounting screw (the first fixing screw 41). [Figure 9] A schematic explanatory diagram showing the configuration of the electric thumb turn. [Figure 10]This is an exploded perspective view of the main component according to the first embodiment of the present invention, where the lock is of type TE (the locking / unlocking mechanism inside the lock case is omitted). [Figure 11] A plan view showing an example of a rotating connection shaft. [Figure 12] Figure 11 shows a cross-sectional view along line 12-12 (a section cut perpendicular to the line). [Figure 13] An explanatory diagram showing the installation method of the first connection adapter when the lock is of type TE. [Figure 14] A perspective view of the door thickness adjustment member used in Figure 13. [Figure 15] Cross-sectional view of the door thickness adjustment member, taken from line 15-15 in Figure 14 (horizontal cross-section). [Modes for carrying out the invention]

[0022] The present invention will be described in detail below with reference to the embodiments shown in the drawings. Figures 1 to 15 represent a first embodiment for carrying out the present invention. First, with reference to Figure 1, the main components of the power transmission mechanism of the electric thumbturn according to the first embodiment (hereinafter referred to as "power transmission mechanism X") will be briefly described. On the right side of the drawing is a DA type lock 4A in which the lock case 5 is fixed to the internal space 2 on the end grain side of the door, which serves as the opening and closing body 1 (details of the locking and unlocking mechanism inside the lock case are well known and will be omitted).

[0023] Although door 1 is shown by a dashed line for convenience, door 1 has an indoor wall section 1a on the near side, an outdoor wall section 1b on the far side, a front wall section 1c, and an opening 3 formed in the indoor wall section 1a for fitting a connecting adapter.

[0024] The DA-type lock 4A (hereinafter referred to as "lock 4A") has a recessed lock case 5 that fits inside the door, a front plate 6 located on the front of the case, etc., and a required opening 7 is formed near the rear ends of the indoor wall portion 1a and the outdoor wall portion 1b of the lock case 5 that communicates with an opening 3 for fitting a connecting adapter. In addition, insertion holes 9 for multiple skewer-shaped fixing pins 8 are formed in the part near the upper end of the front plate 6. Furthermore, an opening for a locking piece (e.g., deadbolt or cam deadbolt) 10 that constitutes the locking and unlocking mechanism is formed in the part near the lower end of the front plate 6. The locking and unlocking mechanism also includes a driven rotating body (thumbturn daruma) 11 that is rotatably provided inside the lock case 5 via a receiving seat so as to face the locking piece 10 and the required opening 7. Note that the shaft fitting hole of the driven rotating body 11 has a shape other than a perfect circle (e.g., elliptical, track shape, + shape, - shape, star shape, etc.).

[0025] Next, the lower part of the drawing shows a vertically elongated box-shaped case body 21 that constitutes the housing of the electric thumbturn (electric lock) 20, while the upper left of the case body 21 shows a mounting base plate member 22 that also constitutes the housing, both in a perspective view.

[0026] The housing of the electric thumbturn (electric lock) 20 consists of a box-shaped case body 21 and a mounting base plate member 22 that closes the rear opening of the case body 21. The box-shaped case body 21 has a front wall portion, left and right side wall portions, a removable top wall portion that covers the built-in battery, etc.

[0027] Furthermore, a thumbturn knob 23 is rotatably mounted on the front wall portion. In addition, multiple through-holes 25 for electric thumbturn fixing screws 24 are formed approximately in the center of the left and right side wall portions.

[0028] However, the box-shaped case body 21 is fixed to the opposing mounting projections 27a of the mounting base plate member 22 with a plurality of electric thumbturn fixing screws 24. In this embodiment, the mounting base plate member 22 consists of a vertically elongated base plate portion 26 whose upper edge is substantially horizontal and whose lower edge is arc-shaped, and a support plate 27 fixed to the lower side of the surface of the vertically elongated base plate portion and having the opposing mounting projections 27a on both the left and right sides. Although not specifically indicated by reference numerals, the mounting base plate member 22 has a central hole through which the connecting rotation shaft 31 (described later) passes, a plurality of through holes for fixing screws formed concentrically around the central hole at predetermined intervals, and so on, as appropriate.

[0029] Next, a two-part connecting adapter 30 is shown in a perspective view between the back side of the mounting base plate member 22 of the electric thumbturn (electric lock) 20 and the indoor wall portion 1a of the door 1 or the wide indoor side wall of the lock case 5. The first and second shaft-penetrating wall portions 32a and 33a of the two-part connecting adapter 30 are interposed between the driven rotating body 11 that constitutes the locking / unlocking mechanism of the lock front 4A and the mounting base plate member 22, and the rotating connecting shaft 31 of the first connecting adapter 33 transmits the driving force of the electric thumbturn 20 to the driven rotating body 11 of the locking / unlocking mechanism.

[0030] Here, the specific configuration of the two-article connection adapter 30 will be described with reference to, for example, Figures 3 to 6. It is preferable that the two-article connection adapter 30 has a plurality of engagement holes (female fitting portions) and engagement projections (male fitting portions) that engage with these so that the two articles do not separate when they are joined face to face (a secondary problem of the invention).

[0031] The connection adapter 30 consists of a first connection adapter 32 having a rotating connection shaft 31 that transmits the driving force of the electric thumbturn 20, and a second connection adapter 33 that is joined to one side of the first connection adapter.

[0032] In this embodiment, the connection adapter 30 consists of a first connection adapter 32 that transmits the driving force of the electric thumbturn 20 and has a rotating connection shaft 31 in the first shaft through wall portion 32a, and a second connection adapter 33 that is joined to one side of the first connection adapter and has through holes for a plurality of fixing screws in the second shaft through wall portion 33a. When the protruding engaging portion 33b of the second connection adapter 33 is fixed to the lock case 5 by a plurality of skewer-shaped fixing pins inserted from upper and lower insertion holes 9 on one side of the front plate 6 (referred to here as "DA type"), the connection adapter 30 is used by combining the first connection adapter 32 and the second connection adapter 33 in a joined state. On the other hand, when the first connection adapter 32 is fixed to an outdoor operating member that constitutes an outdoor member with a plurality of fixing screws (referred to here as "TE type"), the connection adapter 30 is used by using the first connection adapter 32 alone.

[0033] Regarding the fixing method of the first connection adapter 32, for example, there are (a) a type in which it is fixed to a cylinder that constitutes an outdoor side member, (b) a type in which it is fixed to a lock case that constitutes an outdoor side operating member, and (c) a type in which it is fixed to a fixing plate on the cylinder or lock case side. Therefore, the "outdoor side member" here refers to a lock case, cylinder, fixing plate, support plate, etc. that are fixed to the wall surface on the outdoor side of the door, and is a broad concept that includes the outdoor side operating member.

[0034] Here, an example of the first connection adapter 32 will be described with reference to Figures 3, 5, and 8. In these figures, 32a is the first shaft through wall portion of the first connection adapter 32, and a first through hole 35 is formed in the center of this first shaft through wall portion 32a. A pair of left and right first fitting protrusions 36 are formed on one vertical side of the first shaft through wall portion 32a (the side that joins to the other vertical side of the second shaft through wall portion 33a of the second connection adapter 33). A pair of screw holes 37 for the shorter first fixing screw 41 are formed at the upper and lower diagonal ends of the first shaft through wall portion 32a. Furthermore, a pair of notches 38 for the longer second fixing screw 42 are formed on the left and right sides of the approximate center of the first shaft through wall portion 32a. Furthermore, since the connection adapter 30 is a support member that rotatably supports the rotating connection shaft 31, it is desirable that the circular through holes of the connection adapter support the rotating connection shaft 31 via, for example, a bearing plate having a circular through hole.

[0035] Similarly, an example of the second connection adapter 33 will be described with reference to Figures 4, 5, and 8. As mentioned above, in these figures, 33a is the oval-shaped second shaft through wall portion of the second connection adapter 33, and a circular second through hole 45 is formed in the center of this second shaft through wall portion 33a. A pair of left and right second fitting protrusions 46 are formed on one vertical side of the second shaft through wall portion 33a (the side that joins to the vertical back surface of the elongated base portion 26 of the mounting substrate member). A pair of through holes 47 for the shorter first fixing screw 41 are formed at the upper and lower diagonal ends of the second shaft through wall portion 33a. The pair of through holes 47 communicate with the screw hole 37. Furthermore, a pair of through holes 48 for the first fitting protrusions 36 are formed on the left and right sides of the approximate center of the second shaft through wall portion 33a.

[0036] The shorter first fixing screw 41 and the longer second fixing screw 42 described above can be appropriately selected to correspond to the "DA type" and the "TE type". That is, in the power transmission mechanism X of the electric thumbturn 20, when the lock is of the "DA type", the connection adapter 30 is supported by the DA type fixing screw 42 and / or the shorter first fixing screw 41 that penetrate the mounting base plate member 22 on the electric thumbturn 20 side to prevent it from falling, while when the lock is of the "TE type", it is supported by the second fixing screw 42 which is at least longer than the first fixing screw to prevent it from falling.

[0037] Depending on the embodiment, if the lock is of the "DA type," multiple shorter first fixing screws 41 may be used to prevent the second connection adapter 33 from detaching from the first connection adapter 32. Furthermore, whether to use a through hole or a notch is a matter for design modification.

[0038] Therefore, in this embodiment, the longer second fixing screw 42 can be screwed into the outer cylinder 51 constituting the outdoor operating member 50, passing through the mounting base plate member 22 and through the through hole of the second connection adapter 33 (see Figure 10). The outdoor operating member 50 is generally configured to have a cylinder that is locked and unlocked by a key, and the cylinder consists of an inner and outer double cylinder and a number of pin turner pillars or C-shaped or plate-shaped movable obstruction pieces incorporated at the boundary (shear line) between them to prevent the rotation of the inner cylinder, and a cylinder collar (ring-shaped cover member) is provided on a portion of the cylinder wall that is exposed.

[0039] Although not part of the claims, the configuration of the connecting rotating shaft (corresponding to the thumbturn shaft) 31 will be briefly described here with reference to Figures 11 and 12. The rotating connecting shaft 31 consists of a long rod-shaped thumbturn connector 53 that connects to the electric thumbturn 20, and a thumbturn core 56 that has a male projection-shaped engaging portion 55 that engages with the female engaged portion 54 of the thumbturn connector, and is connected to the driven rotating body 11 that constitutes the locking and unlocking mechanism of the lock. The thumbturn connector 53 and the thumbturn core 56 are integrally fixed by one or more connecting fasteners 57 that are inserted into communication holes formed radially in the engaging portion 55 and the engaged portion 54.

[0040] Furthermore, a flange 58 is provided around the connecting end of the thumbturn connector 53. The shape of the outer circumference of the thumbturn connector 53 and the thumbturn core 56 is not a perfect circle (for example, an ellipse, track shape, plus shape, minus shape, star shape, etc.). In addition, one end of the thumbturn connector 53 is integrally connected to the output gear of the electric thumbturn 20, which will be described later, either directly or via a connecting cylinder, and rotates in conjunction with the output gear.

[0041] Next, Figure 9 is a schematic diagram showing the internal configuration of the electric thumbturn 20. Since electric thumbturns are also a well-known technology, only the main components are shown in a schematic manner. As explained in the background technology section, the electric thumbturn 20 receives identification information output from a mobile terminal (so-called smartphone), such as a switch unit or a card-type storage medium containing identification information, or receives identification information from an input unit such as a keypad for entering identification information (PIN code) or a reader for reading identification information (biometric information or facial features). The control unit compares the received or input information with registered information stored in the storage unit, and if the comparison matches, it gives a control signal to the drive motor 61, which starts the drive motor 60. At the same time, the drive gear 62 provided on its output shaft, and the drive-side transmission gears such as the intermediary gear 63 and output gear 64 that mesh with it, rotate. Due to this driving force, the locking piece (so-called deadbolt or cam deadbolt) 10 that constitutes the locking and unlocking mechanism moves in and out relative to the receiving bracket on the door frame side, with reference to the front plate 6 of the lock case 5 provided in the internal space 2 of the door 1, via the rotating connection shaft 31 supported or guided by the connection adapter 30.

[0042] Here, with reference to Figure 2, the main components constituting the power transmission mechanism X will be briefly explained. S1 indicates the start of the electric motor 61. When the electric motor 61 starts, the drive gear 62 and the intermediary gear 63 constituting the reduction mechanism rotate. S2 indicates that the output gear 64 inside the case body rotates based on the start of the electric motor 61. S3 indicates that the rotating connection shaft 31 constituting the connection adapter 30 rotates in conjunction with the output gear 64. S4 indicates that the driven rotating body 11 housed inside the lock case 5 to which the thumbturn core 56 of the rotating connection shaft 31 is connected rotates. S5 indicates that the locking piece (e.g., deadbolt) 10 extends and retracts.

[0043] Next, Figure 10 is an exploded perspective view of the main components according to the first embodiment of the present invention, where the lock 4B is of the TE type (the locking and unlocking mechanism inside the lock case is omitted as in Figure 1). Figure 13 shows the mounting configuration of the first connection adapter 32 when the lock 4B is of the TE type. When using only the first connection adapter 32 with the TE type lock 4B, it is preferable to use a door thickness adjustment member 60 that includes one or more spacers of different thicknesses. Figure 14 is a perspective view of the door thickness adjustment member 60 used in Figure 13, and Figure 15 is a cross-sectional view (horizontal cross-section) of Figure 14 taken along line 15-15.

[0044] Although not specifically labeled, a set of door thickness adjustment members 60, which consists of multiple vertical plate-shaped spacers 60a, 60b, and 60c joined together horizontally, has multiple through holes 61 through which at least the longer second fixing screws 42 pass. Furthermore, when joining multiple spacers 60a, 60b, and 60c together horizontally, it is desirable to use a male-female engagement or screw-type structure to prevent them from coming apart. Also, if the lock is of the DA type, a second connection adapter 33 is present, so it is not always necessary to use the door thickness adjustment member 60.

[0045] As described above, in the power transmission mechanism X of the electric thumbturn of the present invention, the lock is an existing lock that can operate the locking / unlocking mechanism by rotating the thumbturn knob constituting the indoor operating member in a predetermined direction, and on the other hand, can operate the locking / unlocking mechanism by rotating the inner cylinder constituting the outdoor operating member with a key. The power transmission mechanism X can utilize as many of the components constituting the locking / unlocking mechanism, including at least the lock case 5 and locking piece of the existing lock, as possible. When using an existing lock, if the outdoor operating member is not used, an opening remains on the outer wall surface of the door, so it is desirable to close the opening with an appropriate sealing member from the viewpoint of security and design.

[0046] <Note> Although not a specific requirement of the claim, in the case of the "DA type," the connection adapter is preferably supported by a first fixing screw that penetrates the mounting substrate member to prevent it from falling, while in the case of the "TE type," it is preferable that it is supported by a second fixing screw that is at least longer than the first fixing screw to prevent it from falling.

[0047] Furthermore, it is preferable that the second fixing screw penetrates the mounting substrate member and passes through the second connection adapter, and is then screwed into the outer cylinder of the outdoor operating member that constitutes the outdoor side member.

[0048] Furthermore, it is preferable that the housing of the electric thumbturn consists of the mounting base plate member corresponding to the bottom plate and the case body having an overall box-like external structure, and that the box-like case body is fixed to the opposing mounting projections of the mounting base plate member with a plurality of electric thumbturn fixing screws.

[0049] In addition, to enable the arbitrary selection of a thumbturn connector and / or thumbturn core that matches the connection structure of the thumbturn knob member and the driven body of the lock (the problem of the invention), the rotating connection shaft preferably comprises a long rod-shaped thumbturn connector that connects to the electric thumbturn, and a thumbturn core that has an engaging portion that engages with the engaged portion of the thumbturn connector and connects to a driven rotating body that constitutes the locking and unlocking mechanism of the lock, and the thumbturn connector and the thumbturn core are preferably integrally fixed by a connecting fastener that is inserted into communication holes formed in the engaging portion and the engaged portion. [Industrial applicability]

[0050] This invention is used in the lock industry as a power transmission mechanism or mounting structure for an electric thumbturn (electric lock). [Explanation of symbols]

[0051] X...Power transmission mechanism for electric thumbturn, 1...Opening / closing body, internal space, 1a...Indoor wall portion of the opening / closing mechanism, 1b...Outdoor wall portion of the opening / closing mechanism, 4A...Lock (DA type), 4B...Lock (TE type), 5...Lock case, 6...Front plate, 8...Skewer-shaped fixing pin, 9...Insertion hole, 10... Locking piece, 11... Driven rotating body, 20... Electric thumbturn, 21...Case body, 22...Mounting circuit board component, 23...Thumbturn knob, 26...Long vertical base section, 27...Support plate, 27a...Opposite mounting projection, 30…Connection adapter, 31... Rotating connecting shaft, 32...First connection adapter, 33...Second connection adapter, 32a...first axis penetrating wall part, 33a...second axis penetrating wall part, 33b...Protruding engaging portion of the second connecting adapter, 41...First fixing screw, 42...Second fixing screw, 50...Outdoor side operating component, 60... Door thickness adjustment component.

Claims

1. A power transmission mechanism for an electric thumbturn, comprising: a lock case fixed in the internal space on the end grain side of an opening / closing body, a lock equipped with a locking / unlocking mechanism for extending and retracting a locking piece inside the lock case; an electric thumbturn fixed via a mounting base member that abuts against the indoor wall surface of the opening / closing body; and a connecting adapter for two items, the shaft-penetrating wall being interposed between the driven rotating body constituting the locking / unlocking mechanism of the lock and the mounting base member, and transmitting the driving force of the electric thumbturn to the driven rotating body of the locking / unlocking mechanism.

2. The power transmission mechanism for an electric thumbturn according to claim 1, wherein the connection adapter comprises a first connection adapter that transmits the driving force of the electric thumbturn and has a rotating connection shaft in the first shaft through wall portion, and a second connection adapter that is joined to one side of the first connection adapter and has through holes for a plurality of fixing screws in the second shaft through wall portion, wherein when the protruding engaging portion of the second connection adapter is fixed to the lock case by a plurality of skewer-shaped fixing pins inserted from the insertion holes of the front plate, the connection adapter is used in combination with the first connection adapter and the second connection adapter, on the other hand, when the first connection adapter is fixed to the outdoor side member with a plurality of fixing screws, the connection adapter is used by using the first connection adapter alone, characterized in that the power transmission mechanism for an electric thumbturn

3. The power transmission mechanism for an electric thumbturn according to claim 1, wherein the lock is a lock in which the locking / unlocking mechanism can be activated by rotating the thumbturn knob constituting the indoor side member in a predetermined direction, and on the other hand, the lock is a lock in which the locking / unlocking mechanism can be activated by rotating the inner cylinder of the cylinder constituting the outdoor side member by key operation, and the power transmission mechanism is characterized in that it can use the lock case and the components of the locking / unlocking mechanism of the lock.

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