Thumb-turn device

Abstract

To provide a thumb-turn device for driving a motor to rotate a thumb turn, which can improve manual operability of the thumb turn with a simple structure.SOLUTION: A thumb turn 3 and a thumb-turn shaft 11 are integrally connected via a rotary cam 12, and the rotary cam 12 is rotatably inserted into a worm wheel 14 connected to a motor 18. Clutch balls 16 and 16 and a clutch spring 15 are stored in a storage hole 12f provided in the rotary cam 12, and the clutch balls 16 and 16 are pressed to the worm wheel 14 side by the clutch spring 15 so as to be engaged with engaging grooves 141a-141d provided in the worm wheel 14.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a thumb turn device that rotates a thumb turn using a motor. [Background technology]

[0002] For example, in recent years, from the viewpoint of security and convenience, motor-driven thumb turns have become increasingly popular. Turn devices are used for doors of houses, etc. For example, a thumb turn device described in Patent Document 1 The thumb turn is integrally connected to the thumb turn shaft via the thumb turn body member. The thumbturn body member is rotatably inserted into a thumbturn connector that is connected to a motor, The thumb turn device is engaged with the thumb turn connector via a cam. When the thumb turn is rotated, the thumb turn main body and the thumb turn connector engage with each other via a cam. Then, the motor rotates in the reverse direction, causing the thumb turn connector to rotate in the opposite direction. Return it to the previous position to release the engagement between the thumb turn body member and the thumb turn connector. When the thumb turn is manually rotated, the force acting on the thumb turn connector is transmitted through the cam. The thumb turn can be rotated with a small force without acting on the thumb turn body member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-143405 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the thumb turn device described in Patent Document 1 requires only a small force to rotate the thumb turn. In order to do this, a cam is provided between the thumb turn body member and the thumb turn connector, and the motor is driven in a predetermined direction. It is necessary to rotate the cam in one direction and then in the other direction to release the cam engagement, which makes the structure complicated. It was messy.

[0005] Therefore, the present invention has been made to solve the above problems, and is a method for driving a motor. A thumb turn device that rotates a thumb turn, with a simple structure that allows for manual operation of the thumb turn. The present invention aims to provide a technology that can improve the above. [Means for solving the problem]

[0006] In order to achieve the above object, one aspect of the present invention is to provide a device including: (1) a thumb turn, a thumb turn shaft, and an intermediate shaft that connects the thumb turn and the thumb turn shaft so that they rotate together; and a hollow hole through which the intermediate shaft is rotatably inserted, and the intermediate shaft rotates in response to the driving of the motor. a thumb turn connector that rotates, and a clutch disposed between the intermediate shaft and the thumb turn connector. a clutch ball, a biasing member for biasing the clutch ball toward the thumb turn connecting body, and a receiving recess provided on the intermediate shaft, capable of receiving the clutch ball and the biasing member; an engaging portion provided on the inner circumferential surface of the hollow hole of the turn connector, which engages with the clutch ball; This thumb turn device is characterized by having:

[0007] In the thumb turn device having the above configuration, when the motor is driven to rotate the thumb turn, the clutch The ball is urged toward the thumb turn connector by the urging member and engages with the engagement portion, and the intermediate shaft The thumb turn connector rotates as a unit. The thumb turn device also rotates without driving the motor. When the clutch ball is manually rotated, it moves into the receiving recess against the biasing member. This disengages the thumb turn connector from the intermediate shaft. Therefore, the thumb turn can be rotated with a small force. The thumb turn device has a simple structure that uses the biasing force of a biasing member to move the clutch ball back and forth. This improves the manual operability of the thumb turn.

[0008] (2) In the thumb-turn device described in (1), the biasing force of the biasing member is When the thumb turn connecting body is rotated by the drive shaft, the clutch ball is inserted into the receiving recess. The motor is not driven and the thumb turn is connected to the engaging portion. When the clutch ball is not rotated, the clutch ball is inserted into the receiving recess in response to the rotation of the intermediate shaft. and the engagement portion is released from the engagement portion by retracting the engagement portion inward. .

[0009] The thumb turn device with the above configuration collects the clutch ball by manually rotating the thumb turn. The engagement between the intermediate shaft and the thumb turn connector can be easily released without using power. It can be removed.

[0010] (3) In the thumb turn device described in (1) or (2), a device for supplying power to the motor It is preferable that the battery has a

[0011] The thumb turn device having the above configuration rotates the thumb turn with the motor, and then rotates the motor in the reverse direction. The thumb turn can be rotated with little force without the need for a This reduces power consumption and helps prevent battery drain.

[0012] (4) In the thumb turn device described in any one of (1) to (3), the first on / off a second on-off switch, and a third on-off switch; the connecting body has a first operating part that operates the first on / off switch in response to rotation of the connecting body; The intermediate shaft is connected to the second on / off switch and a second operating member for operating the second on / off switch. It is preferable that the ion exchange membrane has a working part.

[0013] The thumb turn device having the above-described configuration operates by a first operating portion provided on the thumb turn connector. The first on / off switch is turned on and off in response to the rotation of the connecting body. 2Operating part operates the second on / off switch and the third on / off switch according to the rotation of the rotating cam Therefore, the thumb turn device having the above configuration can turn the thumb turn on and off with a compact structure. The position of the ring connector and intermediate shaft can be detected.

[0014] (5) The thumb turn device described in (4) has a control unit, and the control unit When the motor is driven to lock or unlock the door, the first on / off switch and the second on / off switch are At least one of the off switch and the third on / off switch switches between an on and off state. If the motor is not rotated in the same direction as when it is driven, the motor is rotated in the opposite direction to when it is driven. It is preferable to execute a retry process of rotating the image in the opposite direction.

[0015] In the thumb turn device having the above configuration, when the motor is driven to rotate the thumb turn, ~When any of the third on / off switches cannot be switched on / off, the motor is driven. After rotating the motor in the opposite direction to when the clutch is driven, the motor is rotated in the same direction as when the clutch is driven. It automatically improves the malfunction of the ball and allows the thumb turn to rotate normally electrically. Cut. [Effects of the Invention]

[0016] Therefore, according to the present invention, a thumb turn device that drives a motor to rotate a thumb turn is provided. To realize a technology that can improve the manual operability of the thumb turn with a simple structure. It is possible. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an external perspective view of a thumb turn device according to the present invention; [Figure 2] FIG. 2 is a cross-sectional view of the thumb turn device shown in FIG. [Figure 3] 3 is a diagram showing the internal structure of the thumb turn device shown in FIG. 2. [Figure 4] FIG. 2 is an exploded perspective view illustrating the thumb turn rotation structure. [Figure 5] FIG. [Figure 6] 10A and 10B are diagrams illustrating a manual locking operation. [Figure 7] 10A and 10B are diagrams illustrating an electric locking operation. [Figure 8] FIG. 2 is a diagram illustrating the switching of the on / off states of each switch. [Figure 9] 10 is a flowchart showing an example of a control procedure for an electric locking (unlocking) process. [Figure 10] 10A and 10B are diagrams illustrating an electric locking operation in an abnormal state. DETAILED DESCRIPTION OF THE INVENTION

[0018] Next, an embodiment of a thumb turn device according to the present invention will be described with reference to the drawings. In this form, it is attached to the entrance door or interior door of a general home or office, and is operated manually or by a motor. A thumbturn device that opens and closes a lock by rotating the thumbturn is disclosed.

[0019] (External configuration of thumb turn device 1) FIG. 1 is a perspective view of the appearance of a thumb turn device 1. The thumb turn device 1 is housed in a box-shaped case 2. A thumb turn 3 is rotatably provided on the door. Below the thumb turn 3, there is a lock command or A lock / unlock button 4 is provided for inputting an unlock command.

[0020] (Internal structure of thumb turn device 1) Fig. 2 is a cross-sectional view of the thumb turn device 1 shown in Fig. 1. Fig. 3 is a cross-sectional view of the thumb turn device 1 shown in Fig. 2. 3 is a diagram showing the internal structure of the device 1. FIG. 3 is a diagram showing the thumb turn device 1 as seen from the rear side. In Figure 3, some parts are omitted to make it easier to understand the internal structure. FIG. 10 is an exploded perspective view illustrating the rotation structure.

[0021] As shown in FIG. 2, the thumb turn 3 has a polygonal (square in this embodiment) insert at the tip. The shaft portion provided with the insertion portion 3a is inserted into the insertion hole 2a opened in the case 2, and the It is rotatably attached to the case 2 using a coupling 8.

[0022] As shown in Figures 2 and 3, the case 2 has a rotating mechanism for automatically rotating the thumb turn 3. The rotation mechanism 6 is built in. The rotation mechanism 6 is composed of a rotation cam 12, a thumb turn shaft 11, and a thumb A turning shaft spring 13, a mounting mount 10, a worm wheel 14, and a clutch spring 15 a pair of clutch balls 16, 16, a worm gear 17, a motor 18, and a worm Wheel detection switch (hereinafter referred to as "WH detection switch") 19 and unlock detection switch 2 0, a lock detection switch 21, and a control board 22.

[0023] The rotation mechanism 6 operates using a battery 5 as a power source. The battery 5 may be a dry battery or a rechargeable battery. The thumb turn device 1 does not have a built-in battery 5, but receives power via a power supply line. may be supplied.

[0024] As shown in FIG. 2, the rotating cam 12 has both ends rotated by the insertion portion 12h and the pressing plate 2c. The rotating cam 12 is, in order from the thumb turn 3 side, an insertion portion 12h and a cam The rotating cam 12 has a cam portion 12i, a clutch portion 12d, and an insertion portion 12e. The thumb turn 3 and the thumb turn shaft 11 are connected so as to rotate integrally. is an example of an "intermediate shaft."

[0025] As shown in FIGS. 2 and 4, the rotating cam 12 is fitted into a first fitting hole provided on the insertion portion 12h side. The inserting portion 3a of the thumb turn 3 is tightly fitted into the thumb turn shaft 11. The rotating cam 12 has an insertion portion 11a that is polygonal (in this embodiment, rectangular). The insertion portion 11a of the thumb turn shaft 11 is inserted into the second fitting hole 12b provided on the insertion portion 12e side. are fitted together tightly.

[0026] As shown in FIG. 2, the door D is attached to a mounting mount 10 using a mounting pin (not shown). The thumb turn device 1 is attached to the mounting mount 1 by attaching the connecting portion 11b of the thumb turn shaft 11. The connecting portion 11b is fixed to the door D when inserted into the door D. The thumb turn shaft spring 13 is compressed in the second fitting hole 12b, and the connecting portion 1 The thumb turn shaft 11 is biased so as to maintain the connection between the lock lever 1b and a dead bolt (not shown). Such a thumb turn device 1 operates a deadbolt (not shown) in response to the rotation of the thumb turn 3. Door D can be locked and unlocked by operating the

[0027] As shown in FIGS. 2 and 4, the worm wheel 14 has a rotating cam 12 rotatably inserted therethrough. The worm wheel 14 has a hollow hole 14b through which the cam portion 12i of the rotating cam 12 is inserted. When the clutch portion 12d is in contact with the stepped portion between the clutch portion 12d and the outer circumferential surface of the clutch portion 12d, The cam shaft is rotatably mounted on the cam shaft.

[0028] As shown in FIG. 3, the worm wheel 14 has a gear 14a provided on the outer circumferential surface. It is connected to a motor 18 via a gear 17 and rotates as the motor 18 drives it. That is, when the motor 18 rotates in the first direction K, the worm gear 17 rotates in the locking direction (counterclockwise in the drawing). )L, and when the motor 18 rotates in a second direction -K opposite to the first direction K, the motor 18 rotates in the unlocking direction ( It rotates clockwise (in the drawing) -L. The worm wheel 14 is an example of a "thumb turn connecting body." do.

[0029] The clutch portion 12d of the rotating cam 12 has a direction perpendicular to the axial direction of the rotating cam 12. The receiving hole 12f is formed to penetrate the bearing. The receiving hole 12f receives a pair of clutch springs 15. The receiving hole 12f is an example of a "receiving recess" The clutch spring 15 is an example of a "biasing member." The receiving hole 12f accommodates the clutch ball 16. The clutch ball 16 is rotated by the rotating cam 12 (clutch portion 12d). The pair of clutch balls 16, 16 are guided along the radial direction of the receiving hole 12f. The clutch spring 15 is disposed in the receiving hole 12f and is forced outward (worm hole). It is biased towards the wheel 14 side.

[0030] As shown in FIGS. 2, 3, and 4, the worm wheel 14 has a hollow hole 14b. Engagement grooves 141a, 141b, 141c, and 141d that engage with the clutch balls 16 are provided. The engagement grooves 141a, 141b, 141c, and 141d are examples of "engagement portions." The rotating cam 12 is inserted into the worm wheel 14 via a pair of clutch balls 16, 16. The engagement grooves 141a, 141b, 141c, and 141d are formed so as to correspond to the opening of the hollow hole 14b. The engagement groove 141a extends from the end along the axial direction of the worm wheel 14. , 141b, 141c, and 141d are provided at 90° intervals in the circumferential direction of the hollow hole 14b. The engagement grooves 141a, 141b, 141c, and 141d are approximately equal in diameter to the clutch ball 16. The balls 16 are semi-spherical and have almost the same diameter, and engage with the clutch balls 16 without any gap.

[0031] The spring force (biasing force) of the clutch spring 15 is applied to the worm wheel 14 by the motor 18. When rotating the clutch balls 16, 16, the clutch balls 16, 16 are protruded from the receiving hole 12f and the engaging groove 14 1a, 141b, 141c, and 141d are engaged, while the motor 18 is not driven. When the cam wheel 14 is not rotated, the clutch balls 16, 16 is retracted into the receiving hole 12f, and the engaging grooves 141a, 141b, 141c, and 141d are engaged. Therefore, the rotating cam 12 is driven by the motor 18. When the thumb turn 3 is rotated, it rotates smoothly in accordance with the rotation of the motor 18. When turning 3 manually, it can be rotated smoothly in accordance with the rotation of the thumb turn 3.

[0032] As shown in FIG. 3, a WH detection switch 19, an unlock detection switch 20, and a lock detection switch The switch 21 is an on / off switch and is disposed on the outside of the worm wheel 14. The WH detection switch 19 is an example of a "first on / off switch." The lock detection switch 21 is an example of the "second on-off switch." This is an example of a "titch".

[0033] As shown in Fig. 3, the WH detection switch 19 includes a detection roller 191. 4, the outer circumferential surface of the worm wheel 14 is provided with a detection roller 191 which is engaged with the detection roller 191. Engagement recesses 142a, 142b, 142c, and 142d are provided at 90° intervals in the circumferential direction. The worm wheel 14 has engagement recesses 142a, 142b, 142c, and 142d. The outer peripheral surface is an example of a "first operating portion."

[0034] As shown in FIG. 3, the WH detection switch 19 is connected to the detection roller 19 as shown by the solid line in the figure. When the switch 1 is engaged with one of the engagement recesses 142a, 142b, 142c, and 142d, the switch is in the OFF position. On the other hand, the WH detection switch 19 is connected to the detection roller 191 as shown by the two-dot chain line in the figure. When the engaging recess 142a, 142b, 142c, or 142d does not engage with any of the engaging recesses 142a, 142b, 142c, and 142d, the ON state is becomes.

[0035] As shown in FIG. 4, the rotating cam 12 has an unlock detection switch 20 and a lock detection switch 21. The cam piece 12c is provided to operate the cam portion 12i. The cam piece 12c is an example of a "second operating portion."

[0036] As shown in FIG. 3, the unlock detection switch 20 and the lock detection switch 21 are connected to the cam piece 12c. It is disposed on the movement path and turns ON when pressed by the cam piece 12c. The unlock detection switch 20 detects the unlock position of the rotary cam 12. The lock detection switch 21 is disposed at a position where it can be removed. It is placed in a position where it can be easily accessed.

[0037] (Electrical configuration of the thumb turn device) 5 is an electrical block diagram. The control board 22 includes a CPU 221 and a memory 222. The control board 22 is a well-known microcomputer. Detection switch 19, unlock detection switch 20, lock detection switch 21, and lock / unlock button 4 is electrically connected to

[0038] The memory 222 stores various programs. It stores data and is also used as a temporary storage area when executing a control program. The CPU 221 receives a locking or unlocking instruction via the locking / unlocking button 4, for example. When this is done, the program is read out from the memory 222 and executed to control the thumb turn device 1. The CPU 221 is an example of a "control unit." Note that the control board 22 is also an example of a "control unit." Good too.

[0039] (Operation description: manual locking operation) Next, the operation of the thumb turn device 1 will be described. First, the thumb turn 3 is rotated manually. The manual locking operation will now be described. FIG. 6 is a diagram illustrating the manual locking operation. 6, the line type and hatch are used to clarify the positional relationship between the rotating cam 12 and the worm wheel 14. I'm adjusting the timing.

[0040] For example, as shown in FIG. 6(a), when the thumb turn 3 is in the unlock position, the rotating cam 12 , the cam piece 12c presses the unlock detection switch 20 but does not press the lock detection switch 21. At this time, the pair of clutch balls 16, 16 are arranged in a position where the clutch spring 15 The detection roller 191 is biased by the force of the urging force and engages with the engagement grooves 141a and 141c. The WH detection switch 19 is pressed down. do not have.

[0041] As shown in FIG. 6(b), the thumb turn 3 is manually turned in the locking direction without driving the motor 18. When the worm wheel 14 is rotated, the worm wheel 14 is engaged with the worm gear 17 to limit the rotation. Therefore, when the rotational torque is applied to the rotating cam 12 from the thumb turn 3, the pair of clamps The clutch balls 16, 16 are retracted into the receiving hole 12f against the clutch spring 15, and the engagement groove 14 1a, 141c. As a result, the rotating cam 12 is released from the engagement with the worm wheel 1 4 rotates independently in the locking direction L within the hollow hole 14b.

[0042] As the rotating cam 12 rotates, the cam piece 12c no longer presses the unlock detection switch 20. The unlock detection switch 20 is switched from ON to OFF. Meanwhile, the worm wheel 14 Since the WH detection switch 142 does not rotate, the detection roller 191 continues to engage with the engagement recess 142a. Chi 19 remains OFF.

[0043] For example, as shown in FIG. 6(c), when the rotating cam 12 rotates to the locking position, the cam piece 12 c presses the lock detection switch 21, and the lock detection switch 21 switches from OFF to ON. At this time, the worm wheel 14 does not rotate, so the detection roller 191 is not engaged. The WH detection switch 19 remains in the OFF state while continuing to engage with the recess 142a.

[0044] In addition, when manually turning the thumb turn 3 in the locked position to unlock, do the opposite of the above. Just perform the action.

[0045] (Electric locking operation) Next, the motor 18 is driven to rotate the thumb turn 3 from the unlocked position to the locked position. The locking operation will be explained. Figure 7 is a diagram for explaining the electric locking operation. Figure 7 shows the rotating cam The line type and hatching are adjusted to clarify the positional relationship between the worm wheel 12 and the worm wheel 14. are.

[0046] The electric locking operation is manual except that the motor 18 drives the worm wheel to rotate. This is the same as the manual locking operation. Therefore, here we will focus on the differences between the manual locking operation and the manual locking operation. The description of operations similar to those during the manual release operation will be omitted as appropriate.

[0047] The state before operation shown in FIG. 7(a) is the same as the state before operation shown in FIG. 6(a), so no explanation is required. When a lock command is received via the lock / unlock button 4, the motor 18 rotates in the first direction K. The pair of clutch balls 16 rotates, and the worm wheel 14 starts to rotate in the locking direction L. , 16 are biased by the clutch spring 15 and engage with the engagement grooves 141a, 141c, The rotating cam 12 rotates integrally with the worm wheel 14 in the locking direction L.

[0048] As the rotating cam 12 rotates, the cam piece 12c no longer presses the unlock detection switch 20. The unlock detection switch 20 is switched from ON to OFF. By this rotation, the detection roller 191 is released from the engagement recess 142a, and the worm wheel Therefore, the WH detection switch 19 is turned from OFF to ON. It can be replaced.

[0049] For example, as shown in FIG. 7(c), the worm wheel 14 and the rotating cam 12 may be moved to the locked position. When the cam piece 12c rotates, it presses the lock detection switch 21, and the lock detection switch 21 is turned on. The state is switched from FF to ON. Also, the detection roller 191 engages with the engaging recess 142d. The WH detection switch 19 is switched from ON to OFF.

[0050] In addition, when driving the motor to rotate the thumb turn 3 in the locked position to unlock, The above operation can be reversed.

[0051] (Toggle the on / off state of each switch) FIG. 8 is a diagram illustrating the switching of the on / off states of each switch. When the thumb turn 3 (rotating cam 12) is in the unlocked position (unlocked position), 2) is moving from the unlocked position to the locked position (intermediate position), and when the thumb turn 3 (rotating When the door 12 is in the locked position (locked position), the WH detection switch 19 and the unlock detection switch 20 and the lock detection switch 21 are in the on / off state.

[0052] During manual locking (unlocking) operation and electric locking (unlocking) operation, the rotation of the worm wheel 14 The on / off state of the WH detection switch 19 differs depending on whether it is present or not, but the rest is the same. Therefore, the thumb turn device 1 rotates the thumb turn 3 using the motor 18. In this case, the WH detection switch 19, the unlock detection switch 20, and the lock detection switch 21 are turned on or off. Based on the status, the presence or absence of malfunction of the worm wheel 14 or the rotating cam 12 is monitored. If there is a malfunction, the rotation of the motor 18 is controlled to improve the malfunction. Carry out the process.

[0053] (Electric locking (unlocking) process) 9 is a flowchart showing an example of a control procedure for the electric locking (unlocking) process. 1 is a diagram illustrating the electric locking operation in an abnormal state. When a locking instruction is received via the control board 22, the CPU 221 of the control board 22 reads the operation program from the memory 222. The program is read out and the electric locking (unlocking) process shown in FIG. 9 is executed. Although this is performed by the CPU 221, it may also be written as "performed by the thumb turn device 1."

[0054] As shown in FIG. 9, when the thumb-turn device 1 receives a locking command, the rotary cam 12 first It is determined whether the rotary cam 12 is in the unlocked position (S1). When the unlocking detection switch 20 is located at a position where it is pressed by the cam piece 12c, In this case, as shown in FIG. The cam 12 is determined to be in the unlocking position (S1), and the motor 18 is rotated in the first direction K (S 2).

[0055] Then, as shown in FIG. 10(b), the motor 18 rotates in the first direction K, and the worm wheel When the wheel 14 starts to rotate in the locking direction L, the pair of clutch balls 16, 16 engage with the engagement groove 1. While the rotary cam 12 is engaged with the worm wheel 14, the rotary cam 12 is locked together with the worm wheel 14. Then, the detection roller 191 is released from the engagement recess 142a, and the When the wheel 14 is pressed, the WH detection switch 19 switches from OFF to ON. Also, the unlock detection switch 20 is no longer pressed by the cam piece 12c, and changes from ON to OFF. Can be switched to FF.

[0056] In this case, as shown in FIG. 9, the thumb turn device 1 turns from the ON position to the ON position. When it is switched off (S3), the motor 18 is stopped after a certain time has elapsed (S4). .

[0057] As shown in FIG. 10(c), before the motor 18 stops, the pair of clutch balls 16, When the clutch spring 15 is pulled back into the receiving hole 12f, the worm wheel 14 and In this case, as shown in FIG. 10(d), the worm wheel Even if the wheel 14 rotates to the locking position in response to the rotation of the motor 18, the rotating cam 12 The rotation is not transmitted from the arm wheel 14, and the arm wheel 14 cannot rotate to the locked position. The output switch 21 cannot be switched from OFF to ON. The detection roller 191 engages with the engaging recess 142d and is switched from ON to OFF.

[0058] As shown in FIG. 9, the thumb turn device 1 is in a state where the lock detection switch 21 is not ON (S 5: NO), the number of retries n is incremented by 1 (S9), and the motor 18 is rotated in the second direction −K. (S10).

[0059] As shown in FIG. 10(d), when the motor 18 rotates in the second direction −K, the worm wheel The worm wheel 14 rotates in the unlocking direction -L. 1 is released from the engagement recess 142d and is pressed against the worm wheel 14. Then, the WH detection switch 19 is switched from OFF to ON.

[0060] As shown in FIG. 9, the thumb turn device 1 turns on when the WH detection switch 19 is turned from OFF to ON. If the switch is made (S11: YES), the motor 18 is stopped after a certain time has elapsed (S12). As a result, as shown in FIG. 10(e), the worm wheel 14 is in the locked position before the electric locking operation starts. Then, the detection roller 191 engages with the engagement recess 142a, and the WH detection switch Switch 19 can be switched from ON to OFF.

[0061] As shown in FIG. 9, the thumb turn device 1 turns on when the WH detection switch 19 is turned from ON to OFF. If the retry count is changed (S13: YES), the system checks whether the retry count n is a specified number (for example, 4 times). If the number of retries n is not the specified number (S14: NO), The return device 1 returns to the process of S1.

[0062] As shown in FIG. 10(e), the motor 18 is rotated in the second direction −K to rotate the worm wheel Even if the clutch balls 16 and 161 return to the unlocked position, the clutch balls 16 and 161 are in the engagement grooves 141a to 141d. If the rotary cam 12 does not engage with any of the above, the rotary cam 12 will not return to the unlocked position. Neither the detection switch 20 nor the lock detection switch 21 is pressed by the cam piece 12c and is turned OFF. .

[0063] As shown in FIG. 9, the thumb turn device 1 has both an unlock detection switch 20 and a lock detection switch 2 When the switch 1 is also OFF, it is determined that the rotary cam 12 is not in either the unlocked position or the locked position (S (S1: NO, S7: NO), the motor 18 is rotated in the first direction K (S2). The device 1 performs the process from S2 onwards in the same manner as above, and restarts the rotation of the thumb turn 3 by the motor 18. The processes of S10 to S13 and S2 are an example of "retry process."

[0064] As shown in FIG. 10(f), the motor 18 rotates again in the first direction K, and the worm wheel When the clutch balls 16 are rotated again in the locking direction L, the pair of clutch balls 16 are engaged with the engagement groove 14. 1a, 141c, the rotating cam 12 moves in the locking direction together with the worm wheel 14. When the worm wheel 14 rotates, the detection roller 191 engages with the engagement recess 142. a is disengaged, and the WH detection switch 19 is switched from OFF to ON. As shown in (g), the motor 18 rotates in the first direction K for a certain period of time, and the rotating cam 12 and the wall When the lock wheel 14 rotates to the unlock position, the lock detection switch 21 changes from OFF to ON. Can be replaced.

[0065] As shown in FIG. 9, after the motor 18 is rotated again in the first direction K, (S2), the WH detection switch 19 is switched from OFF to ON (S3: YES), and the motor After rotating the motor 18 for a certain period of time (S4), it is determined that the lock detection switch 21 is turned ON. If the motor 18 is turned off (S5: YES), the thumb turn 3 is placed in the locked position. Therefore, the thumb turn device 1 resets the number of retries n (S6) and ends the process. do.

[0066] Even if the motor 18 is rotated in the first direction K (S2), the WH detection switch 19 is OFF. If it does not switch from F to ON (S3: NO), the worm wheel 14 is not rotating. Therefore, the thumb turn device 1 stops the motor 18 (S8), and after S9 Processing is performed.

[0067] Even if the motor 18 is rotated in the reverse direction (S10), if the WH detection switch 19 remains OFF, If the answer is NO (S11), there is a high possibility that an abnormality has occurred in the drive system. S10), even if the worm wheel 14 rotates in the unlocking direction -L (S11: YES), Even if the arm wheel 14 stops before returning to the position before the electric locking operation started (S1 2, S13: NO), there is a high possibility that there is an abnormality in the drive system. In these cases, the thumb turn device 1 executes error processing (S15), and after processing in S6, the processing ends. For example, it can notify errors by voice or display, or call the management company that manages the thumb turn device 1. Knowledge, etc.

[0068] (summary) As described above, the thumb turn device 1 of this embodiment drives the motor 18 to turn the thumb turn. When the clutch balls 16 are rotated, the clutch spring 15 rotates the pair of clutch balls 16. The cam 12 is biased toward the cam wheel 14 and engages with the engagement grooves 141a and 141c. The worm wheel 14 rotates integrally. The thumb turn device 1 also drives a motor 18. When the thumb turn 3 is manually rotated without the clutch ball 16, 16 being engaged, The retainer 141 moves into the receiving hole 12f against the force of the spring 15 to release the engagement with the engagement grooves 141a and 141c. As a result, the force acting on the worm wheel 14 does not act on the rotating cam 12. Therefore, the thumb turn 3 can be rotated with a small force. According to the present invention, the spring force of the clutch spring 15 is used to advance a pair of clutch balls 16, 16. The simple structure for retracting the thumb turn improves the manual operability of the thumb turn.

[0069] In addition, the thumb turn device 1 of this embodiment is configured such that the force of manually rotating the thumb turn 3 rotates the pair of clutches. Since the balls 16, 16 are retracted into the receiving holes 12f, the rotating cam 12 and the The engagement with the worm wheel 14 can be easily released.

[0070] In addition, the thumb turn device 1 of this embodiment rotates the thumb turn 3 by the motor 18, and then the motor Since the thumb turn 3 can be rotated with little force without having to reverse the turntable 18, This reduces the frequency with which the motor 18 is energized, thereby suppressing consumption of the battery 5.

[0071] In addition, the thumb turn device 1 of this embodiment has the engaging recesses 142a to 142b of the worm wheel 14. 2d is provided on the outer peripheral surface of the worm wheel 14, and the WH detection switch 1 9 is turned on and off. Also, the rotation of the rotating cam 12 is controlled by the cam piece 12c provided on the rotating cam 12. The unlock detection switch 20 and the lock detection switch 21 are turned on and off depending on the According to the thumb turn device 1, the worm wheel 14 and the rotating cam 12 have a compact structure. The position can be detected.

[0072] In addition, the thumb turn device 1 of this embodiment drives the motor 18 to rotate the thumb turn 3. In this case, either the WH detection switch 19, the unlock detection switch 20, or the lock detection switch 21 When the on / off state cannot be switched, the motor 18 is rotated in the reverse direction to when it is driven, and then The motor 18 is rotated in the same direction as when it is driven. Automatically corrects 16 malfunctions and allows the thumb turn 3 to rotate normally electrically. .

[0073] The present invention is not limited to the above-described embodiment, and may be modified without departing from the spirit of the invention. A wide range of applications are possible.

[0074] In the above embodiment, the rotating cam 12 is provided with a receiving hole 12f penetrating therethrough, and the receiving hole 12f Two clutch balls 16 and one clutch spring 15 are disposed in the receiving hole. The hole 12f may be a bottomed hole, and one clutch ball 16 and one clutch spring 15 may be disposed therein. In addition, bottomed accommodating recesses are provided on the inner peripheral surface of the hollow hole 14b at a phase difference of 180°, and each accommodating recess However, in the above embodiment, one clutch ball 16 and one clutch spring 15 may be disposed. A pair of clutch balls 16, 16 and a clutch spring 15 are inserted into the through-hole 12f. By disposing the clutch balls 16, 16, the number of parts can be reduced. Since the engagement force when engaging with the mating grooves 141a to 141d is uniform, the thumb turn 3 can be rotated When the rotating cam 12 is rotated, the rotating cam 12 is easily rotated within the worm wheel 14.

[0075] In step S11 of FIG. 9, the motor 18 is rotated in the opposite direction to when it is driven. Alternatively, the detection roller 191 may be rotated in the same direction to engage with the engagement recess 142c. By rotating the motor 18 in the reverse direction as in the above embodiment, the rotation amount of the motor 18 when locking or unlocking is constant. This allows for simpler control.

[0076] The WH detection switch 19, the unlock detection switch 20, and the lock detection switch 21 are mechanically Instead of an on / off switch, an optical sensor or the like may be used.

[0077] The worm wheel 14 is fitted with a separate member provided with engaging recesses 142a to 142d. The first operating part may be configured by a separate member. A member having an operating piece for operating the lock detection switch 21 and the latch 20 is attached. The second operation unit may be configured by the above.

[0078] The control procedure shown in FIG. 9 may be modified in any way without departing from the spirit of the invention. For example, the reset process in the process of Figure 9 can be omitted or another process can be added. It is not necessary to do this. [Explanation of symbols]

[0079] 1 Thumb turn device 11 Thumb turn shaft 12 Rotating cam (an example of an intermediate shaft) 14 Worm wheel (an example of a thumb turn connector) 15 Clutch spring (an example of a biasing member) 16 Clutch Ball 18 Motor 12f Receiving hole (example of a receiving recess) 141a to 141d Engagement grooves (an example of an engagement portion)

Claims

1. Thumb turn and A thumb turn shaft, an intermediate shaft that connects the thumb turn and the thumb turn shaft so that they rotate integrally; A motor; The intermediate shaft has a hollow hole through which it is rotatably inserted, and rotates in response to the driving of the motor. A thumb turn connector; a clutch ball disposed between the intermediate shaft and the thumb turn connecting body; a biasing member that biases the clutch ball toward the thumb turn connecting body; an accommodating recess provided in the intermediate shaft, capable of accommodating the clutch ball and the biasing member; The thumb turn connecting member has an inner peripheral surface of the hollow hole, and the thumb turn connecting member has a hole for engaging with the clutch ball. an engaging portion; having A thumb turn device characterized by the above.

2. The thumb turn device according to claim 1, The biasing force of the biasing member is applied when the motor is driven to rotate the thumb turn connecting body. In this case, the clutch ball is caused to protrude from the receiving recess and engage with the engaging portion, while the front When the motor is not driven and the thumb turn connecting body is not rotated, the intermediate shaft The clutch ball is then retracted into the receiving recess, and disengaged from the engaging portion. It is set as follows, A thumb turn device characterized by the above.

3. The thumb turn device according to claim 1 or 2, A battery is provided to power the motor. A thumb turn device characterized by:

4. The thumb turn device according to any one of claims 1 to 3, A first on-off switch, a second on-off switch, and a third on-off switch are included. The thumb turn connecting member is configured to operate the first on / off switch in response to its own rotation. It has one operation unit, The intermediate shaft is connected to the second on / off switch and a second on / off switch that operates the second on / off switch. Having an operating unit; A thumb turn device characterized by the above.

5. The thumb turn device according to claim 4, A control unit is provided. The control unit When the motor is driven to lock or unlock the door, the first on / off switch and the front At least one of the second on / off switch and the third on / off switch is in an on / off state. If the motor cannot be switched, the motor is rotated in the opposite direction to when it is driven, and then the motor is driven. and performing a retry process to rotate the motor in the same direction as when the motor was started. A thumb turn device characterized by the above.

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