lock

Abstract

To provide a lock which can be easily operated with a specific operating force.SOLUTION: A lock which includes a fixed part 2, a hook part 4 movably supported by the fixed part 2 and capable of being hooked on a receiving member, a rotary part 5 supported by the fixed part 2 for rotation around a rotary axis 31, and a rotary force transmission part 6 to which the rotary force of the rotary part 5 around the rotary axis 31 is transmitted and which transmits the rotary force to the hook part 4; in which the rotary part 5 has a rotary cam curve parts 531, 532 which are brought into contact with the rotary force transmission part 6 and transmit the rotary force so that the hook part 4 is rotated in the rotary direction and a linear movement cam curve parts 533, 534 which are brought into contact with the rotary force transmission part 6 and transmit the rotary force so that the hook part 4 is moved in the lateral direction; and which operates such that when the rotary part 5 is rotated, either one of an operation of rotating the hook part 4 in the rotating direction by the rotary cam curve parts 531, 532 and the rotary force transmission part 6 and an operation of moving the hook part 4 in the linear direction by the linear movement cam curve parts 533, 534 and the rotary force transmission part 6 is performed, and thereafter the other operation is performed.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to locks. [Background technology]

[0002] Crescent locks and cremone locks are known as locks that are attached to either the sash frame or the stile and pull the lock while fixing the other. These locks can be used to fix and pull the lock simultaneously, or they can be used to fix the lock and then pull the lock (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 53-21700 Summary of the Invention [Problem to be solved by the invention]

[0004] Locks that simultaneously secure and retract the door can cause variations in the operating force required for both the locking and retracting operations depending on the sash installation. The lock disclosed in Patent Document 1 retracts the door after securing it, but when unlocking it requires operating a pin to press down the claw that maintains the locked state, which makes it difficult to operate.

[0005] An object of the present disclosure is to provide a lock that can be easily operated with a constant operating force. [Means for solving the problem]

[0006] In order to achieve the above object, the lock disclosed herein has a fixed portion provided on one of two members, a hook portion movably supported on the fixed portion and capable of hooking onto the other of the two members, a rotating portion rotatably supported on the fixed portion about a rotation axis, and a rotational force transmission portion to which a rotational force about the rotation axis of the rotating portion is transmitted and which transmits the rotational force to the hook portion, the rotating portion having a rotating cam curved portion that contacts the rotational force transmission portion and transmits the rotational force so that the hook portion rotates in a rotational direction, and a linear movement cam curved portion that contacts the rotational force transmission portion and transmits the rotational force so that the hook portion moves in a linear direction in which the two members approach and move away from each other, and when the rotating portion rotates, it performs one of the following actions: an action to rotate the hook portion in the rotational direction by the rotating cam curved portion and the rotational force transmission portion, and an action to move the hook portion in the linear direction by the linear movement cam curved portion and the rotational force transmission portion, and then performs the other action. the fixed portion has a first guide portion that guides movement of the rotational force transmission portion and a second guide portion that guides movement of a guided portion provided on the hook portion, and the first guide portion and the second guide portion are provided on the same member of the fixed portion. . [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 10 is a perspective view of the unlocked state of the lock attached to the sash. [Figure 2] FIG. 10 is a perspective view of the lock attached to the sash in a locked state. [Figure 3] FIG. 10 is a perspective view of the lock attached to the sash in the fully pulled state. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. [Figure 12]FIG. [Figure 13] This is a front view of the lock when it has been pulled. [Figure 14] FIG. 10 is a front view of the lock when the rotation to unlock the lock is completed. [Figure 15] This is an oblique view of a lock used in a thumbturn lock. DETAILED DESCRIPTION OF THE INVENTION

[0008] The lock 1 shown in Figures 1 to 3 is, for example, a crescent lock or a cremone lock attached to a sash. The lock 1 is attached to the frame 12 of the shoji screen and is hooked onto a receiving member 14 attached to the sash frame 13 to prevent the shoji screen from opening or closing. When the lock 1 is hooked onto the receiving member 14 shown in Figure 2, it is possible to pull the frame 12 of the shoji screen and the sash frame 13 together, as shown in Figure 3. The frame 12 corresponds to one of the two members in the claims. The sash frame 13 corresponds to the other of the two members in the claims.

[0009] The lock 1 has a fixed portion 2, a rotating shaft portion 3, a hook portion 4, a rotating portion 5, and a rotational force transmission portion 6. The fixed portion 2 is fixed to the frame 12 via a base 15. The rotating shaft portion 3 is attached to the fixed portion 2. The hook portion 4 is movably supported on the fixed portion 2 and can be hooked onto a receiving member 14. The rotating portion 5 is supported by the rotating shaft portion 3 attached to the fixed portion 2 so as to be rotatable about a rotational axis 31. The rotational force of the rotating portion 5 about the rotational axis 31 is transmitted to the rotational force transmission portion 6, which then transmits the rotational force to the hook portion 4. The rotational force transmission portion 6 is a pin. As shown in FIG. 4, the rotating portion 5 may be rotated by the power of a motor 7. A rack portion 55 that converts the rotation of the motor into rotation about the rotational axis 31 is provided on the outer periphery of the rotating portion 5. The rack portion 55 corresponds to the tooth portion in the claims.

[0010] As shown in Figures 5 and 6, the fixed portion 2, hook portion 4, and rotating portion 5 are arranged overlapping in this order. The direction in which the fixed portion 2, hook portion 4, and rotating portion 5 overlap is referred to as the thickness direction. The axes of the rotating shaft portion 3 and the rotational force transmission portion 6 each extend in the thickness direction. The thickness direction is sometimes referred to as the axial direction. The direction in which the frame 12 and sash frame 13 of the shoji screen face each other when closed is referred to as the horizontal direction. The horizontal direction and the thickness direction are perpendicular to each other. The direction perpendicular to the horizontal and thickness directions is referred to as the vertical direction. When the shoji screen is in the closed state, the receiving member 14 attached to the sash frame 13 shown in Figures 1 to 3 and the lock 1 face each other in the horizontal direction. The direction around the rotation axis 31 of the rotating shaft portion 3 is sometimes referred to as the rotation direction. In the drawings, the thickness direction is indicated by arrow Z, the vertical direction by arrow Y, the horizontal direction by arrow X, and the rotation direction by arrow A.

[0011] As shown in Figures 5 to 7, the fixed portion 2 is flat. The fixed portion 2 is disposed in a position facing the thickness direction Z. The fixed portion 2 has a circular outer shape with two notches 21 formed on the outer periphery. A fixed hole 22 is formed in the center of the fixed portion 2, penetrating the plate surface in the thickness direction Z. The rotating shaft portion 3 is inserted into the fixed hole 22. The fixed portion 2 is provided with a first guide groove 23 and a second guide groove 24 that guide the movement of the hook portion 4. The second guide groove 24 corresponds to the guide portion in the claims. The first guide groove 23 and the second guide groove 24 penetrate the fixed portion 2 in the thickness direction Z.

[0012] 7, the first guide groove portion 23 has a first arc portion 231 that is arc-shaped with a central angle of 90° centered at the center of the fixed portion 2, and a first straight portion 232 that extends radially from one end of the first arc portion 231 toward the outer periphery of the fixed portion 2. A portion of the first guide groove portion 23 where the first arc portion 231 connects with the first straight portion 232 is referred to as a switching position 23c. An end of the first arc portion 231 opposite the switching position 23c is referred to as a first end portion 23a. An end of the first straight portion 232 opposite the switching position 23c is referred to as a second end portion 23b.

[0013] The second guide groove portion 24 has a second arc portion 241 that is arc-shaped with a central angle of 90° centered at the center of the fixed portion 2, and a second straight portion 242 that extends radially from one end of the second arc portion 241 toward the center of the fixed portion 2. A portion of the second guide groove portion 24 where the second arc portion 241 connects with the second straight portion 242 is referred to as a switching position 24c. An end of the second arc portion 241 opposite the switching position 24c is referred to as a first end portion 24a. An end of the second straight portion 242 opposite the switching position 24c is referred to as a second end portion 24b.

[0014] The first end 23a of the first guide groove portion 23 and the first end 24a of the second guide groove portion 24 are arranged on the same straight line that passes through the center of the fixed portion 2 and extends in the vertical direction Y. The first straight line portion 232 and the second straight line portion 242 are arranged on the same straight line that passes through the center of the fixed portion 2 and extends in the horizontal direction X. The switching position 23c and second end 23b of the first guide groove portion 23 and the switching position 24c and second end 24b of the second guide groove portion 24 are arranged on the same straight line that passes through the center of the fixed portion 2 and extends in the horizontal direction X. The rotational force transmission portion 6 is inserted into the first guide groove portion 23. The guided portion 43 of the hook portion 4 is inserted into the second guide groove portion 24.

[0015] As shown in Figures 4, 5, 8, and 9, the hook portion 4 has a flat hook plate portion 41, a hooking portion 42 that protrudes from the hook plate portion 41 and is hooked onto the receiving member 14 (see Figures 1 to 3), and a guided portion 43 that protrudes from the hook plate portion 41 and is introduced into the second guide groove portion 24. The hook portion 4 is disposed in an orientation in which the hook plate portion 41 faces the thickness direction Z. The hooking portion 42 protrudes from a part of the outer edge of the hook plate portion 41 on one side in the thickness direction Z, toward the side that overlaps with the rotating portion 5. The guided portion 43 protrudes from the hook portion 4 on the other side in the thickness direction Z, toward the side that overlaps with the fixed portion 2. The guided portion 43 is inserted into the second guide groove portion 24.

[0016] As shown in Figures 6 and 9, the hook plate portion 41 has a long hole portion 44 formed in its center. The rotating shaft portion 3 is inserted into the long hole portion 44. The direction in which the long hole portion 44 extends is referred to as the length direction, and the direction perpendicular to the length direction is referred to as the width direction. The lengthwise dimension of the long hole portion 44 is larger than the diameter of the rotating shaft portion 3. The widthwise dimension of the long hole portion 44 is approximately the same as the diameter of the rotating shaft portion 3. The rotating shaft portion 3 inserted into the long hole portion 44 can move in the lengthwise direction of the long hole portion 44.

[0017] A hook hole 45 is formed in the hook plate 41 at a position away from one end of the elongated hole 44 in the longitudinal direction toward the outer edge. The rotational force transmission unit 6 is inserted into the hook hole 45. The diameter of the hook hole 45 is approximately the same as the diameter of the rotational force transmission unit 6. The guided portion 43 is located at a position away from the other end of the elongated hole 44 in the longitudinal direction toward the outer edge. The elongated hole 44, the hook hole 45, and the guided portion 43 are located on the same line that passes through the center of the elongated hole 44 and extends in the longitudinal direction of the elongated hole 44. The elongated hole 44 is located between the hook hole 45 and the guide portion. The end of the elongated hole 44 on the hook hole 45 side is referred to as a first end 44a, and the end on the guided portion 43 side is referred to as a second end 44b.

[0018] As shown in Figures 5, 6, and 10, the rotating unit 5 is a flat plate-shaped member. The plate surface of the rotating unit 5 has a shape obtained by removing a portion of a circle excluding the center. The rotating unit 5 has a rotation hole 51 formed at the center of the circle. The rotating shaft 3 is inserted into the rotation hole 51. The diameter of the rotation hole 51 is approximately the same as the diameter of the rotating shaft 3. The rotation axis 31 passes through the center of the rotation hole 51. The rotating unit 5 has a rack 55 provided on the outer periphery of the circle. In describing the rotating unit 5, the direction extending radially from the rotation axis 31 is referred to as the radial direction, the side of the radial direction toward the rotation axis 31 is referred to as the inner side, and the side away from the rotation axis 31 is referred to as the outer side.

[0019] The rotating part 5 has grooves 52 formed radially therein, penetrating the plate surface of the rotating part 5. The grooves 52 extend in a curved manner in a direction surrounding the rotation hole 51. The grooves 52 are curved so as to protrude toward the outer periphery of the rotating part 5. The rotational force transmission part 6 is inserted into the grooves 52. The grooves 52 have a cam groove 53 extending in a curved manner different from the arc centered on the rotation axis 31, and an arc groove 54 extending in an arc centered on the rotation axis 31. The cam groove 53 is located on one side in the circumferential direction centered on the rotation axis 31, and the arc groove 54 is located on the other side. The cam groove 53 and the arc groove 54 are connected. The portion of the groove 52 where the cam groove 53 and the arc groove 54 are connected is referred to as a connection position 52c. The end of the groove 52 opposite the connecting position 52c of the cam groove 53 is referred to as a first end 52a, and the end of the groove 52 opposite the connecting position 52c of the arc groove 54 is referred to as a second end 52b.

[0020] The cam groove 53 extends in a curved shape that gradually curves radially inward from the connection position 52c toward the first end 52a. The inner edge 52d of the first end 52a of the cam groove 53 is formed in an arc shape that corresponds to the outer shape of the rotational force transmission unit 6. The radially outer portion of the inner edge 52d of the first end 52a of the cam groove 53 is referred to as a first rotating cam curved portion 531, and the radially inner portion is referred to as a second rotating cam curved portion 532. The radially inner portion of the inner edge of the cam groove 53 that is adjacent to the second rotating cam curved portion 532 is referred to as a first linear movement cam curved portion 533, and the radially outer portion that is adjacent to the first rotating cam curved portion 531 is referred to as a second linear movement cam curved portion 534. The first rotating cam curved portion 531 and the second rotating cam curved portion 532 correspond to the rotating cam curved portions in the claims. The first linear movement cam curved portion 533 and the second linear movement cam curved portion 534 correspond to the linear movement cam curved portion in the claims.

[0021] When the fixed portion 2, hook portion 4, and rotating portion 5 are arranged overlapping in the thickness direction Z, the fixed hole portion 22, the elongated hole portion 44 of the hook portion 4, and the rotating hole portion 51 overlap in the thickness direction Z, and the rotating shaft portion 3 is inserted into these holes. The fixed portion 2 and the rotating shaft portion 3 are each fixed to the base 15. The fixed portion 2 does not rotate around the rotation axis 31. The hook portion 4 can rotate around the rotation axis 31 of the rotating shaft portion 3, and can move within the length range of the elongated hole portion 44 relative to the rotating shaft portion 3. The rotating portion 5 can rotate around the rotation axis 31.

[0022] When the fixed portion 2, hook portion 4, and rotating portion 5 are arranged overlapping in the thickness direction Z, the first guide groove portion 23, hook hole portion 45, and cam groove portion 53 overlap in the thickness direction Z, and the rotational force transmission portion 6 is inserted into these holes. The rotational force transmission portion 6 is movably supported on the base 15. The fixed portion 2 and the rotational force transmission portion 6 are capable of relative movement within the length range of the first guide groove portion 23. The hook portion 4 is rotatable around the axis of the rotational force transmission portion 6. The rotating portion 5 and the rotational force transmission portion 6 are capable of relative movement within the range of the inner area of ​​the cam groove portion 53.

[0023] When the fixed part 2 and the hook part 4 are arranged overlapping in the thickness direction Z, the guided part 43 of the hook part 4 is inserted into the second guide groove part 24 of the fixed part 2. The hook part 4 is movable relative to the fixed part 2 within the length range of the second guide groove part 24.

[0024] As shown in Figures 1 and 11, in the unlocked state in which the lock 1 is released from the restraint of the shoji screen and the sash frame 13, the hook portion 42 of the hook portion 4 is located on one side in the vertical direction Y and is separated from the receiving member 14. In Figures 11 to 14, the rotating shaft portion 3 and the rotational force transmission portion 6 are indicated by hatching. In the unlocked state, the rotational force transmission portion 6 is located at the first end 23a of the first guide groove portion 23. The guided portion 43 of the hook portion 4 is located at the first end 24a of the second guide groove portion 24. The length direction of the elongated hole portion 44 of the hook portion 4 is the vertical direction Y. The rotating shaft portion 3 is located at the first end 44a of the elongated hole portion 44 of the hook portion 4. The rotating portion 5 and the rack portion 55 are located on the other side in the vertical direction Y. The rotational force transmission portion 6 is located at the first end 52a of the cam groove portion 53.

[0025] When the rotating unit 5 rotates from the unlocked state to one side of the rotation direction (the direction of arrow A1 in FIG. 11 ), the rotational force transmission unit 6 is pushed by the first rotating cam curved portion 531 of the cam groove portion 53 of the rotating unit 5 and rotates together with the rotating unit 5 around the rotation axis 31 until the rotating unit 5 rotates 90° from the unlocked state. The rotational force transmission unit 6 moves from the first end 23a of the first guide groove portion 23 to the switching position 23c. As shown in FIGS. 2 and 12 , the hook portion 4 also rotates 90° around the rotation axis 31 as the rotational force transmission unit 6 rotates. When the hook portion 4 rotates 90°, the hook portion 42 of the hook portion 4 is hooked onto the receiving member 14. The state in which the rotating unit 5 rotates 90° from the locked state and the hook portion 42 of the hook portion 4 is hooked onto the receiving member 14 is referred to as the locked state. When the hook portion 4 rotates 90° from the unlocked state, the guided portion 43 of the hook portion 4 also moves from the first end 24a of the second guide groove portion 24 to the switching position 24c. The length direction of the elongated hole 44 of the hook portion 4 is the horizontal direction X. The rotating shaft portion 3 is disposed at the first end 44a of the elongated hole 44 of the hook portion 4.

[0026] When the rotating unit 5 further rotates in one direction from the locked state, the rotational force transmission unit 6 is pushed to one side in the vertical direction Y and one side in the horizontal direction X by the first linear movement cam curved portion 533 of the cam groove portion 53 of the rotating unit 5 until the rotating unit 5 rotates 45° from the locked state. The rotational force transmission unit 6 is disposed at the switching position of the first guide groove portion 23, and one side in the vertical direction Y is in contact with the edge portion 232a of the first linear portion 232 of the first guide groove portion 23. Therefore, the rotational force transmission unit 6 moves to one side in the horizontal direction X along this edge portion 232a. When the rotational force transmission unit 6 moves to one side in the horizontal direction X, the hook portion 4 also moves to one side in the horizontal direction X. When the hook portion 4 moves to one side in the horizontal direction X, the elongated hole portion 44 moves to one side in the horizontal direction X, and the rotating shaft portion 3 is positioned at the second end portion 44b of the elongated hole portion 44, as shown in FIG. 13 . The guided portion 43 of the hook portion 4 also moves to one side in the horizontal direction X and is positioned at the second end 24b of the second guide groove portion 24. The rotational force transmission portion 6 moves in the cam groove portion 53 and is positioned at the connection position 52c between the cam groove portion 53 and the arc groove portion 54. As the hook portion 4 moves to one side in the horizontal direction X, the receiving member 14 on which the hook portion 42 is hooked and the fixed portion 2 move closer together, and the shoji frame 12 and sash frame 13 are drawn together. The state in which the rotating portion 5 rotates 45° from the locked state and the shoji frame 12 and sash frame 13 are drawn together is referred to as the drawn-together state.

[0027] The rotating unit 5 can rotate an additional 45° in one direction of rotation from the fully drawn state. Because the rotational force transmission unit 6 is located at the connection position 52c between the cam groove 53 and the arc groove 54, even when the rotating unit 5 rotates, the rotational force transmission unit 6 is located in the arc groove 54 extending in the rotational direction, and only the rotating unit 5 rotates. The rotational force transmission unit 6 does not rotate around the rotation axis 31 together with the rotating unit 5, and the hook portion 4 does not move either. As shown in Figures 3 and 14, when the rotational force transmission unit 6 is located at the position of the second end 52b of the groove 52 of the rotating unit 5, the rotation of the rotating unit 5 stops. The state in which the rotation of the rotating unit 5 has stopped is referred to as the fully locked state.

[0028] When unlocking from the locked state, the rotating unit 5 is rotated in the opposite direction to when locking (the direction of arrow A2 in the figure). While the rotating unit 5 shown in FIG. 14 rotates from the locked state to the position of the pulled-in state shown in FIG. 13, the rotational force of the rotating unit 5 is not transmitted to the rotational force transmission unit 6 because the rotational force transmission unit 6 is disposed in the arc groove portion 54. When the rotating unit 5 rotates to the position where the pulled-in state is reached, the rotational force transmission unit 6 is disposed at the connection position 52c of the cam groove portion 53.

[0029] When the rotating unit 5 is further rotated, the rotational force transmission unit 6 is pushed toward the other side in the horizontal direction X and the other side in the vertical direction Y by the second linear movement cam curved portion 534 of the cam groove portion 53. The rotational force transmission unit 6 is located at the second end portion 23b of the first guide groove portion 23, and the edge portion 232b of the first linear portion 232 contacts the other side in the vertical direction Y. The rotational force transmission unit 6 is restricted from moving toward the other side in the vertical direction Y and moves toward the other side in the horizontal direction X along the edge portion 232b. As the rotational force transmission unit 6 moves toward the other side in the horizontal direction X, the hook portion 4 moves toward the other side in the horizontal direction X, as shown in FIG. 12 . As the hook portion 4 moves toward the other side in the horizontal direction X, the attraction of the sash frame 13 to the stile 12 by the hook portion 4 is released. The rotational force transmission unit 6 is located at the first end portion 52a of the cam groove portion 53.

[0030] When the rotating part 5 is further rotated, the rotational force transmission part 6 is pushed by the second rotating cam curved part 532 of the cam groove part 53 and rotates around the rotation axis 31 together with the rotating part 5. The hook part 4 also rotates, and the catch part 42 moves away from the receiving member 14, entering the unlocked state.

[0031] When locking, the lock 1 rotates the hook portion 4 using the first rotating cam curved portion 531 and the rotational force transmission portion 6, then moves the hook portion 4 in the lateral direction X using the first linear movement cam curved portion 533 and the rotational force transmission portion 6 to pull the hook portion 4. When unlocking, the lock 1 moves the hook portion 4 in the lateral direction X using the second linear movement cam curved portion 534 and the rotational force transmission portion 6 to release the pull, and then rotates the hook portion 4 using the second rotating cam curved portion 532 and the rotational force transmission portion 6 to unlock the lock. Because the operations of rotating the hook portion 4 and pulling the hook portion 4 are performed separately with a time lag, each operation can be performed reliably. Because the rotational force of the rotating portion 5 allows the hook portion 4 to be rotated and pulled with a constant operating force, it is easy to use electricity from an electric motor or the like as the power source for rotating the rotating portion 5. Because the hook portion 4 can be rotated and pulled simply by rotating the rotating portion 5, operation is easy.

[0032] The first rotating cam curved portion 531, the first linear movement cam curved portion 533, the second rotating cam curved portion 532, and the second linear movement cam curved portion 534 are provided on the edge of the same groove portion 52 into which the rotational force transmission portion 6 is inserted. Compared to providing these cam curved portions on the outer periphery of the rotating portion 5 or in different groove portions 52, the external shape of the rotating portion 5 can be made smaller and simpler.

[0033] The fixed part 2 is provided with a second guide groove part 24. The hook part 4 is provided with a guided part 43 that is guided by the second guide groove part 24. The movement of the hook part 4 is guided by the movement of the guided part 43 along the second guide groove part 24, and the hook part 4 can be reliably moved in the correct direction.

[0034] The guided portion 43 is a convex portion that is inserted into the second guide groove portion 24. A mechanism for guiding the movement of the hook portion 4 can be realized with a simple structure.

[0035] The rotational force transmission part 6 is a pin that is movably supported by the fixed part 2 and is inserted into a hook hole 45 formed in the hook part 4. The rotational force transmission part 6 that transmits the rotational force of the rotating part 5 to the hook part 4 can be realized with a simple structure.

[0036] A rack portion 55 to which an external force in the rotation direction is transmitted is provided on the rotating portion 5. The rotating portion 5 can be rotated electrically by rotating a screw or the like that meshes with the rack portion 55 using a motor.

[0037] The present disclosure is not limited to the above-described embodiment and may be modified as appropriate. For example, the first rotating cam curved portion 531, the first linear movement cam curved portion 533, the second rotating cam curved portion 532, and the second linear movement cam curved portion 534 may be provided on the outer periphery of the rotating portion 5. The same rotating cam curved portion and linear movement cam curved portion may be used for both the locked and unlocked states. The arc groove portion 54 connected to the cam groove portion 53 may not be provided. The length of the arc groove portion 54 may be adjusted to adjust the amount of rotation of the rotating portion 5 after the drawn state is reached. The rotation angle of the rotating portion 5 for changing from the unlocked state to the locked state and from the locked state to the drawn state may be set as appropriate.

[0038] The fixed portion 2 is provided with a second guide groove portion 24, and the hook portion 4 is provided with a convex guided portion 43 that is inserted into the second guide groove portion 24. The fixed portion 2 may be provided with a convex guide portion, and the hook portion 4 may be provided with a guided portion 43 into which the guide portion is inserted. The shapes and length dimensions of the first arc portion 231 and the first linear portion 232 of the first guide groove portion 23 may be set as appropriate. The shapes and length dimensions of the second arc portion 241 and the second linear portion 242 of the second guide groove portion 24 may be set as appropriate. The shapes of the first guide groove portion 23 and the second guide groove portion 24 may be set as appropriate depending on the angle at which the rotating portion 5 and the hook portion 4 rotate and the amount of movement thereof. The angle at which the rotating portion 5 and the hook portion 4 rotate and the amount of movement thereof may be set as appropriate. The arrangement of the first guide groove portion 23 and the second guide groove portion 24 may be set as appropriate. The guide portion and the guided portion for guiding the movement of the hook portion 4 may not be provided, or a plurality of guide portions and guided portions may be provided.

[0039] A plurality of rotational force transmission units 6 may be provided, the rotating unit 5 may be provided with cam grooves 53 corresponding to each of the plurality of rotational force transmission units 6, the fixed unit 2 may be provided with first guide grooves 23 corresponding to each of the plurality of rotational force transmission units 6, and the hook unit 4 may be provided with hook holes 45 into which each of the plurality of rotational force transmission units 6 is inserted. In this manner, the rotation of the rotating unit 5 is reliably and stably transmitted to the hook unit 4 via the plurality of rotational force transmission units. The rotational force transmission units 6 may be inserted into both the first guide groove 23 and the second guide groove 24 of the fixed unit 2.

[0040] The rotational force transmission part 6 is a pin that is movably supported by the fixed part 2 and is inserted into a hook hole 45 formed in the hook part 4. The rotational force transmission part 6 may be a columnar or cylindrical member, or may be a columnar or cylindrical member with a step formed on the outer periphery, or may be something other than these. The rotational force transmission part 6 may be provided integrally with the hook part 4.

[0041] The rotating part 5 may not be provided with a rack part 55, and may be rotated manually using a power source other than a motor. As shown in Figure 15, a knob 17 of a thumbturn lock 16 may be attached to the rotating part 5. The rotating part 5 may be provided with a hole into which a member for transmitting an external force in the rotational direction is inserted.

[0042] The shapes, mutual arrangements, and overlapping order of the fixed portion 2, hook portion 4, and rotating portion 5 may be other than those described above and may be set as appropriate. The fixed portion 2 may be formed with a recess into which the rotating shaft portion 3 is inserted, instead of the fixing hole portion 22 through which the rotating shaft portion 3 is inserted.

[0043] The lock 1 may be used in a location other than the sash frame or frame. It may be used as a lock 1 that locks and unlocks the inner and outer sashes. It may be used as a lock 1 that is installed in a location other than the sash. [Explanation of symbols]

[0044] 1. Lock 2. Fixed portion 4. Hook portion 5. Rotating portion 6. Rotational force transmission portion 11. Lock 14. Member 31. Rotation axis 43. Guided portion 52. Groove portion 53. Cam groove portion 55. Rack portion 531. First rotating cam curved portion 532. Second rotating cam curved portion 533. First linear movement cam curved portion 534. Second linear movement cam curved portion

Claims

1. a fixing portion provided on one of the two members; a hook portion movably supported on the fixing portion and capable of being hooked onto the other of the two members; a rotating portion supported on the fixed portion so as to be rotatable about a rotation axis; a rotational force transmission section to which a rotational force about the rotation axis of the rotating section is transmitted and which transmits the rotational force to the hook section, The rotating part is a rotating cam curved portion that contacts the rotational force transmission portion and transmits the rotational force so that the hook portion rotates in a rotational direction; a linear movement cam curved portion that contacts the rotational force transmission portion and transmits the rotational force so that the hook portion moves in a linear direction in which the two members approach and move away from each other, When the rotating portion rotates, one of the following operations is performed: an operation of rotating the hook portion in the rotation direction by the rotating cam curve portion and the rotational force transmission portion; and an operation of moving the hook portion in the linear direction by the linear movement cam curve portion and the rotational force transmission portion. Then, the other operation is performed; the fixing portion includes a first guide portion that guides movement of the rotational force transmission portion; a second guide portion that guides the movement of the guided portion provided on the hook portion, A lock in which the first guide portion and the second guide portion are provided on the same member of the fixed portion.

2. a cam groove portion into which the rotational force transmission portion is inserted is formed in the rotating portion; 2. The lock according to claim 1, wherein the rotating cam curved portion and the linearly moving cam curved portion are provided on the edge of the cam groove portion.

3. The rotating part is a first rotating cam curved portion that transmits the rotational force to the rotational force transmission portion when rotating in one direction of the rotational direction, so that the hook portion rotates in the one direction of the rotational direction; a second rotating cam curved portion that transmits the rotational force to the rotational force transmission portion when rotating in the other direction of the rotational direction so that the hook portion rotates in the other direction of the rotational direction; a first linear movement cam curved portion that transmits the rotational force to the rotational force transmission portion when the hook portion rotates toward one side in the rotational direction so that the two members move toward one side in the linear direction; a second linear movement cam curved portion that transmits the rotational force to the rotational force transmission portion when the hook portion rotates toward the other side of the rotational direction so that the two members move toward the other side of the linear direction; and 3. The lock according to claim 2, wherein the first rotating cam curved portion, the first linear movement cam curved portion, the second rotating cam curved portion, and the second linear movement cam curved portion are provided on the edge of the same cam groove portion.

4. one of the second guide portion and the guided portion is a convex portion that protrudes toward the other side, The lock according to any one of claims 1 to 3, wherein the other is a guide groove portion into which the protrusion is inserted.

5. The rotational force transmission unit includes a plurality of the rotational force transmission units, 5. The lock according to claim 1, wherein the rotating portion has the rotating cam curved portion and the linear movement cam curved portion corresponding to each of the plurality of rotational force transmission portions.

6. The lock according to any one of claims 1 to 5, wherein the rotational force transmission part is movably supported on the fixed part and inserted into a hole formed in the hook part.

7. The lock according to any one of claims 1 to 6, wherein the rotating part is provided with teeth to which an external force in the rotation direction is transmitted.

8. The lock according to any one of claims 1 to 7, wherein the rotating part is provided with a hole into which a member for transmitting an external force in the rotation direction is inserted.

Images