Construction tool

Abstract

To provide a fitting capable of linking the locking / unlocking operation of a locking section and the opening / closing operation of a sash with a simple structure.SOLUTION: A locking section, in its locked state, is unlocked when only a gear 4 turns a predetermined amount in the opening direction and, in its unlocked state, is locked when the gear 4 turns a predetermined amount in the closing direction. A first rotation transmission switching section 6 has an elongated slot section 43 in the gear 4 (one side) and a convex section 54 in an arm 5 (the other side) that protrudes toward the gear 4 and is inserted into the elongated slot section 43. When a second end 45 (inner edge) of the elongated slot section 43 contacts the convex section 54 in the opening direction and the gear 4 rotates in the opening direction, the rotational force of the gear 4 is transmitted to the arm 5 via the second end 45 and the convex section 54, and if the second end 45 of the elongated slot section 43 is not in contact with the convex section 54 in the opening direction, the rotational force of the gear 4 is not transmitted to the arm 5 even if the gear 4 rotates in the opening direction, and in the locked state, the second end 45 of the elongated slot section 43 is disposed at the backward in the opening direction in a spaced-apart manner from the convex section 54.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to fittings.

Background Art

[0002] Conventionally, in fittings such as a sliding window having a lock portion that restricts the movement of a shoji screen in a state where an opening is closed, after unlocking the lock portion, the shoji screen is moved to open the opening, and after moving the shoji screen to close the opening, the lock portion is locked. Patent Document 1 discloses a fitting that can perform the locking and unlocking operations of the lock portion of the sliding window and the opening and closing operations of the shoji screen in one operation by linking them.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In fittings such as a sliding window, the lock portion for locking and the operation portion such as an operator handle for performing the opening and closing operation of the shoji screen are often arranged at separated positions. For this reason, the mechanism for linking the locking and unlocking operations of the lock portion and the opening and closing operations of the shoji screen becomes a complicated structure, or the number of parts increases. As a result, there are problems that the assembly, maintenance, and repair of the fittings are troublesome, and the securing and management of parts are troublesome.

[0005] An object of the present disclosure is to provide a fitting that can link the locking and unlocking operations of the lock portion and the opening and closing operations of the shoji screen with a simple structure.

Means for Solving the Problems

[0006] To achieve the above object, the fitting according to the present disclosure includes a shoji that moves to open and close an opening, a lock portion that locks and unlocks the shoji closing the opening, an operation portion that operates the movement of the shoji, a gear that rotates when the operation portion is operated to lock and unlock the lock portion, an arm that moves the shoji in conjunction with the gear when the rotational force of the gear is transmitted, and a first rotation transmission switching portion that switches between transmission and non-transmission of the rotational force of the gear to the arm. When an operation is performed to move the shoji so as to open the opening by the operation unit, the gear rotates in one side of the rotation direction, and when an operation is performed to move the shoji so as to close the opening by the operation unit, the gear rotates in the other side of the rotation direction opposite to the rotation to the one side, the In the locked state, the lock portion is unlocked when only the gear rotates without the arm being interlocked. one side of the rotation direction In the unlocked state, the gear is locked when it rotates a predetermined amount. The first rotation transmission switching portion includes a long hole portion provided in either the gear or the arm and extending in the rotational direction of the gear, and a convex portion provided on the other side, protruding to the one side and inserted into the long hole portion and movable in the rotational direction inside the long hole portion. the other side of the rotation direction Of the inner edge portion of the long hole portion and the convex portion, one provided on the gear contacts the other, and when the gear rotates, the rotational force of the gear is transmitted to the arm through the inner edge portion of the long hole portion and the convex portion. of the gear When one of the inner edge portion of the long hole portion and the convex portion provided on the gear does not contact the other, the rotational force of the gear is not transmitted to the arm even when the gear rotates. In the locked state, one of the inner edge portion of the long hole portion and the convex portion provided on the gear is spaced apart from the other. from the other side of the rotation direction of the gear one side of the rotation direction from the other side of the rotation direction of the gear one side of the rotation direction the other side of the rotation direction of the gear

Brief Description of the Drawings

[0007]

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Mode for Carrying Out the Invention

[0008] (First Embodiment) As shown in FIGS. 1 and 2, the fitting 1 according to the first embodiment is a vertical sliding window provided in the opening 11 of the wall portion that partitions the inside and outside of the house. Hereinafter, the horizontal direction along the wall portion (the direction of arrow X in the figure) will be referred to as the width direction, and the horizontal direction orthogonal to the width direction (the direction of arrow Y) will be referred to as the inside / outside direction of the house. The fitting 1 includes a frame body 21 provided along the opening 11, a shoji 22 disposed inside the frame body 21, a shoji moving portion 23 that moves the shoji 22 to open and close the opening 11, and a lock portion 24 that locks and unlocks the shoji 22 that closes the opening 11. The frame body 21 is a square frame with a rectangular outer shape. The frame body 21 supports the shoji 22 so as to be movable in the width direction and rotatable about an axis extending in the vertical direction. The shoji 22 opens and closes the opening 11 by rotating about the axis while moving in the width direction with respect to the frame body 21. The state and position where the shoji 22 closes the opening 11 as shown in FIG. 1 are defined as the closed state and the closed position, and the state and position where the shoji 22 opens the opening 11 as shown in FIG. 2 are defined as the open state and the open position.

[0009] As shown in FIGS. 3 to 4, the shoji moving portion 23 includes an operation portion 3 (see FIG. 3) operated by a user, a gear 4 that rotates when the operation portion 3 is operated, an arm 5 that interlocks with the gear 4 when the rotational force of the gear 4 is transmitted, a first rotational transmission switching portion 6 that switches between transmission and non-transmission of the rotational force of the gear 4 to the arm 5, and a case 231 (see FIG. 3) that houses these components. As shown in FIG. 5, the first rotational transmission switching portion 6 has an elongated hole portion 43 of the gear 4 and a convex portion 54 of the arm 5. The elongated hole portion 43 and the convex portion 54 will be described later.

[0010] When the rotational force of the gear 4 is transmitted, the arm 5 rotates coaxially in conjunction with the gear 4. The shoji moving portion 23 is provided with a shaft portion 7 that supports the gear 4 and the arm 5 coaxially. The gear 4 and the arm 5 rotate around the axis of the shaft portion 7. The rotational direction around the axis of this shaft portion 7 is referred to as the "rotational direction". When the arm 5 rotates to one side in the rotational direction in conjunction with the rotation of the gear 4 on one side of the rotational direction, it moves the shoji 22 (see FIGS. 1 and 2) to the open position, and when it rotates to the other side in the rotational direction in conjunction with the rotation of the gear 4 on the other side of the rotational direction, it moves the shoji 22 to the closed position. Hereinafter, the rotation toward one side in the rotational direction of the gear 4 and the arm 5 (rotation in the direction of arrow A in the figure) is referred to as the rotation in the opening direction, and the rotation toward the other side in the rotational direction (rotation in the direction of arrow B in the figure) is referred to as the rotation in the closing direction.

[0011] As shown in FIGS. 1 to 3, the operation unit 3 is, for example, an operator handle or the like. In FIG. 3, the portion that the user of the operator handle grips and rotates is omitted. The operation unit 3 has a plurality of teeth that mesh with the plurality of teeth 41 of the gear 4. The operation unit 3 can rotate the gear 4 in the opening direction by the user operating it so that the shoji 22 is in the open state, and can rotate the gear 4 in the closing direction by operating it so that the shoji 22 is in the closed state.

[0012] As shown in FIGS. 4 and 5, the gear 4 is a flat plate-like member having a plurality of teeth 41 formed on its outer peripheral portion. The gear 4 has a shaft hole portion 42 through which the shaft portion 7 passes at a substantially central portion of the plate surface. The gear 4 is arranged in a direction in which the plate surface is horizontal, and the shaft hole portion 42 penetrates in the vertical direction. The shaft portion 7 is arranged in a direction in which the axis extends in the vertical direction. That is, the rotational direction of the gear 4 is the rotational direction around the axis extending in the vertical direction. The gear 4 is formed with a long hole portion 43 that penetrates the plate surface on the outer peripheral side of the shaft hole portion 42 and extends in the rotational direction around the axis. Of the inner edge portions of the long hole portion 43, the portion located at one end in the rotational direction is referred to as the first end portion 44 (inner edge portion), and the portion located at the other end in the rotational direction is referred to as the second end portion 45 (inner edge portion).

[0013] The plurality of teeth 41 of gear 4 are formed in a partial region of the outer peripheral portion of gear 4 and not formed in the remaining region. The plurality of teeth 41 of gear 4 are arranged in an arc shape centered on the axis. As described above, the plurality of teeth 41 of gear 4 are configured to mesh with the plurality of teeth of the operation portion 3. The region where the plurality of teeth 41 are formed in the outer peripheral portion of gear 4 is denoted as the tooth forming portion 46, and the region where the teeth 41 are not formed is denoted as the non-tooth forming portion 47. Gear 4 rotates within a range where the tooth forming portion 46 faces the operation portion 3 and the plurality of teeth 41 of the tooth forming portion 46 mesh with the teeth of the operation portion 3. The non-tooth forming portion 47 does not face the teeth of the operation portion 3. A lock operation portion 48 protruding outward in the radial direction is formed in the non-tooth forming portion 47.

[0014] Gear 4 is arranged in such a direction that the non-tooth forming portion 47 faces the outdoor side in the indoor-outdoor direction facing the lower frame 221 (see FIGS. 1 and 2) of the shoji 22, and the tooth forming portion 46 faces the indoor side. When gear 4 rotates a predetermined amount in the opening direction when the shoji 22 is in the closed state and the locking portion 24 is in the locked state, the lock operation portion 48 rotates a predetermined amount in the opening direction from one side to the other side in the width direction. When gear 4 rotates a predetermined amount in the closing direction when the shoji 22 is in the closed state and the locking portion 24 is in the unlocked state, the lock operation portion 48 rotates a predetermined amount in the closing direction from the other side to the one side in the width direction.

[0015] The arm 5 has a gear connection portion 51 to which the rotational force of gear 4 is transmitted, and a shoji connection portion 52 that connects the gear connection portion 51 and the shoji 22. The gear connection portion 51 has a disk-shaped disk portion 53 and a convex portion 54 protruding from the disk portion 53. The disk portion 53 is formed with a shaft hole portion 55 through which the shaft portion 7 passes through the central portion. The disk portion 53 is arranged in a direction in which the plate surface is in the vertical direction. The convex portion 54 protrudes downward from the lower surface of the disk portion 53. The gear connection portion 51 is such that the disk portion 53 overlaps gear 4, and the convex portion 54 is inserted into the long hole portion 43 of gear 4 from above. The shaft portion 7 passes through both the shaft hole portion 42 of gear 4 and the shaft hole portion 55 of the gear connection portion 51, and rotatably supports gear 4 and arm 5 coaxially.

[0016] The shoji connecting part 52 is in the shape of a long plate. The shoji connecting part 52 is arranged with its plate surface in the vertical direction. One end 521 of the shoji connecting part 52 is connected to the gear connecting part 51. The gear connecting part 51 and the shoji connecting part 52 rotate integrally when the arm 5 rotates. As shown in FIGS. 1 and 2, the other end 522 of the shoji connecting part 52 is connected to the shoji 22 so as to be relatively rotatable about an axis extending in the vertical direction.

[0017] The convex part 54 has a dimension in the rotational direction smaller than the dimension in the rotational direction of the long hole part 43 of the gear 4. For this reason, the convex part 54 is movable in the rotational direction inside the long hole part 43. When the gear 4 rotates in the opening direction and the second end part 45 of the long hole part 43 contacts the convex part 54 from the other side in the rotational direction, that is, contacts in the opening direction, the convex part 54 is pushed by the second end part 45 of the gear 4 and also rotates in the opening direction, and the arm 5 rotates in the opening direction together with the gear 4. When the gear 4 rotates in the closing direction and the first end part 44 of the long hole part 43 contacts the convex part 54 from one side in the rotational direction, that is, contacts in the closing direction, the convex part 54 is pushed by the first end part 44 of the gear 4 and also rotates in the closing direction, and the arm 5 rotates in the closing direction together with the gear 4. If the convex part 54 of the arm 5 is not pushed by either the first end part 44 or the second end part 45 of the gear 4 as described above even when the gear 4 rotates, the arm 5 does not rotate together with the gear 4.

[0018] The shaft part 7 has a shaft part main body 71 inserted through the shaft hole part 42 of the gear 4 and the shaft hole part 55 of the gear connecting part 51, an upper plate part 72 connected to one end of the shaft part main body 71, and a lower plate part 73 connected to the other end of the shaft part main body 71. The shaft part main body 71 is formed in a columnar shape extending in the vertical direction. The upper plate part 72 is a disk-shaped member having a diameter larger than that of the shaft part 7. The upper plate part 72 is coaxially connected to the upper end part of the shaft part main body 71. The lower plate part 73 is an annular plate-shaped member having an outer shape larger than that of the shaft part main body 71 and an inner diameter the same as the outer diameter of the shaft part main body 71. The lower end part of the shaft part main body 71 is fitted inside the lower plate part 73.

[0019] The lock portion 24 shown in FIGS. 1 and 2 includes a lock body 241 that switches between a locked state in which the shoji 22 is restrained in the closed position and an unlocked state in which it is movable relative to the frame body 21 (see FIGS. 1 and 2), and a link mechanism 242 that transmits the rotational force of the gear 4 and transmits the rotational force of the gear 4 to the lock body 241. The link mechanism 242 has a gear linkage portion 243 that moves in the width direction in conjunction with the movement of the lock operation portion 48 (see FIGS. 4 and 5). When the gear linkage portion 243 is located on one side in the width direction, the lock body 241 is in the unlocked state, and when the gear linkage portion 243 is located on the other side in the width direction, the lock body 241 is in the locked state.

[0020] When the gear linkage portion 243 is located on the other side in the width direction, that is, when the shoji 22 is in the closed state and the lock body 241 is in the locked state, if the gear 4 rotates a predetermined amount in the opening direction and the lock operation portion 48 rotates a predetermined amount in the opening direction so as to move from one side to the other side in the width direction, the gear linkage portion 243 moves to one side in the width direction in conjunction with the lock operation portion 48. As a result, the lock body 241 becomes unlocked. When the gear linkage portion 243 is located on one side in the width direction, that is, when the shoji 22 is in the closed state and the lock body 241 is in the unlocked state, if the gear 4 rotates a predetermined amount in the opening direction and the lock operation portion 48 rotates a predetermined amount in the closing direction so as to move from the other side to the other side in the width direction, the gear linkage portion 243 moves to one side in the width direction in conjunction with the lock operation portion 48. As a result, the lock body 241 becomes locked.

[0021] When the shoji 22 is in the closed state and the lock portion 24 is in the locked state, as shown in FIG. 6, the convex portion 54 of the arm 5 is adjacent to the first end portion 44 of the long hole portion 43 of the gear 4. That is, the convex portion 54 is disposed on one side in the rotational direction inside the long hole portion 43. The second end portion 45 of the long hole portion 43 is disposed with a gap on the other side in the rotational direction of the convex portion 54. When the operation unit 3 is operated to open the shoji 22 from this state and the gear 4 rotates a predetermined amount in the opening direction, only the gear 4 rotates and the arm 5 does not rotate. When the gear 4 further rotates a predetermined amount in the opening direction, the first end portion 44 of the long hole portion 43 of the gear 4 separates from the convex portion 54, and the distance between the second end portion 45 and the convex portion 54 decreases. As shown in FIG. 7, the second end portion 45 contacts the convex portion 54 from the other side in the rotational direction.

[0022] When only the gear 4 rotates a predetermined amount in the opening direction from the state where the shoji 22 is in the closed state and the lock portion 24 is in the locked state as described above, the lock operation portion 48 moves from one side in the width direction toward the other side, and the gear interlocking portion 243 (see FIGS. 1 and 2) moves to one side in the width direction, and the lock portion 24 becomes the unlocked state.

[0023] When the operation unit 3 is further operated to open the shoji 22 and the gear 4 rotates a predetermined amount in the opening direction, the convex portion 54 of the arm 5 is pushed by the second end portion 45 of the long hole portion 43 of the gear 4, and the arm 5 rotates in the opening direction together with the gear 4. At this time, since it is in the unlocked state, when the arm 5 rotates a predetermined amount together with the gear 4 to the position shown in FIG. 8, the shoji 22 becomes the open state. The lock operation portion 48 may be set to separate from the gear interlocking portion 243 that has moved to one side in the width direction at the position where the shoji 22 is in the open state.

[0024] When the shoji 22 is in the open state and the lock portion 24 is in the unlocked state, as shown in FIG. 8, the convex portion 54 of the arm 5 is adjacent to the second end portion 45 of the long hole portion 43 of the gear 4. That is, the convex portion 54 is disposed on the other side in the rotational direction inside the long hole portion 43. From this state, when the operation unit 3 is operated to close the shoji 22 and the gear 4 rotates a predetermined amount in the closing direction, only the gear 4 rotates and the arm 5 does not rotate. When the gear 4 further rotates a predetermined amount in the closing direction, as shown in FIG. 9, the second end portion 45 of the long hole portion 43 of the gear 4 separates from the convex portion 54, and the first end portion 44 contacts the convex portion 54 from one side in the rotational direction. When only the gear 4 rotates in the closing direction and the arm 5 does not rotate, the shoji 22 does not move to the closed position, and since the lock operation portion 48 and the gear interlocking portion 243 are separated, the gear interlocking portion 243 also does not move. That is, the shoji 22 and the lock portion 24 do not move.

[0025] When the operation unit 3 is further operated to close the shoji 22 and the gear 4 rotates a predetermined amount in the closing direction, the convex portion 54 of the arm 5 is pushed by the first end portion 44 of the long hole portion 43 of the gear 4, and the arm 5 rotates in the closing direction together with the gear 4. When the arm 5 rotates together with the gear 4, the shoji 22 becomes the closed state. At this time, since the lock operation portion 48 of the gear 4 moves from the other side in the width direction toward the one side, the gear interlocking portion 243 moves in conjunction with it to the other side in the width direction, and the lock portion 24 becomes the locked state. In this way, the shoji 22 becomes the closed state and the lock portion 24 becomes the locked state.

[0026] The lock portion 24 and the operator unit (for example, in the vicinity of the operator handle of the operation unit 3 of the shoji moving portion 23) may be provided with a display portion that can visually recognize the locked state and the unlocked state. For example, a part of the gear 4 may be made visible, and depending on the position where that part is disposed, the user may be able to determine whether it is in the locked state or the unlocked state.

[0027] The fitting 1 according to the first embodiment includes an elongated hole portion 43 formed in the gear 4 and a convex portion 54 formed in the arm 5, and has a first rotation transmission switching portion 6 that switches between transmission and non - transmission of the rotational force of the gear 4 to the arm 5. If the convex portion 54 is not pushed against the end of the elongated hole portion 43 even when the gear 4 rotates, only the gear 4 rotates without the arm 5 rotating. When the shoji 22 is in the closed state and the lock portion 24 is in the locked state, the elongated hole portion 43 and the convex portion 54 are arranged so that only the gear 4 rotates before the arm 5 rotates in the opening direction in conjunction with the gear 4. As a result, by rotating only the arm 5 in the opening direction, the lock portion 24 can be unlocked, and then by rotating the arm 5 in the opening direction in conjunction with the gear 4, the shoji 22 can be opened. In this way, the unlocking of the lock portion 24 and the opening of the shoji 22 can be performed in a series of operations. In the fitting 1 according to the first embodiment, the simple structure of the convex portion 54 and the elongated hole portion 43 can link the locking and unlocking operations of the lock portion 24 and the opening and closing operations of the shoji 22.

[0028] (Second Embodiment) The same or similar members and parts as those in the above - described first embodiment are denoted by the same reference numerals, and the description thereof is omitted. The configuration different from that of the first embodiment will be described. As shown in FIGS. 10 and 11, the shoji moving portion 23B of the fitting 1B according to the second embodiment has a first rotation transmission switching portion 6 as in the first embodiment, and also has a second rotation transmission switching portion 8 that switches between transmission and non - transmission of the rotational force of the gear 4 to an arm 5 different from the first rotation transmission switching portion 6.

[0029] The second rotation transmission switching portion 8 includes a first hole portion 49 (gear hole portion) provided in the gear 4, a second hole portion 56 (arm hole portion) provided in the gear connection portion 51 of the arm 5, a third hole portion 74 (space portion) provided in the upper plate portion 72 (space - forming member) of the shaft portion 7, and a sphere 81 that can be inserted into the first hole portion 49, the second hole portion 56, and the third hole portion 74. As shown in FIG. 10, the upper plate portion 72 is formed with a hole portion 75 for fixing screws, pins, etc. for positioning. The hole portion 75 is omitted except in FIG. 10.

[0030] As shown in FIGS. 10 to 12, the second hole portion 56 is a round hole penetrating the gear connection portion 51, and the spherical body 81 can pass through vertically. The first hole portion 49 is a hole portion whose opening gradually becomes larger from the lower side to the upper side. The spherical body 81 can enter from the upper side, but it has a shape that cannot pass through downward. The third hole portion 74 is a recess opening downward. The third hole portion 74 is a recess whose opening gradually becomes larger from the upper side to the lower side.

[0031] The opening shape of the upper edge portion 491 and the opening shape of the lower edge portion 492 of the first hole portion 49 may each be rectangular or each may be a slot shape. In the present embodiment, the opening shape of the upper edge portion 491 and the opening shape of the lower edge portion 492 of the first hole portion 49 are each rectangular. The rectangle of the upper edge portion 491 and the rectangle of the lower edge portion 492 of the first hole portion 49 have the same dimension in the radial direction of the gear 4, and the dimension in the direction orthogonal to the radial direction is larger for the rectangle of the upper edge portion 491. The inner peripheral surface of the first hole portion 49 has a first inner peripheral surface 493 located on one side in the rotational direction, a second inner peripheral surface 494 located on the other side in the opening direction, a third inner peripheral surface 495 located on the inner side in the radial direction, and a fourth inner peripheral surface 496 located on the outer side in the radial direction. The second inner peripheral surface 494, the third inner peripheral surface 495, and the fourth inner peripheral surface 496 are surfaces orthogonal to the plate surface of the gear 4, that is, vertical surfaces. The first inner peripheral surface 493 is an inclined surface that gradually inclines from the lower side to the upper side from the other side to the one side in the rotational direction. The radial dimension of the first hole portion 49 is substantially the same as the radial dimension of the spherical body 81. The dimension of the first hole portion 49 in the rotational direction is larger than the radial dimension of the spherical body 81. The first inner peripheral surface 493 of the first hole portion 49 is defined as the first inclined surface 493. The spherical body 81 can roll on the first inclined surface 493.

[0032] The shape of the upper edge portion 741 (the shape of the bottom) and the opening shape of the lower edge portion 742 of the third hole portion 74 may each be rectangular or may each be a slot shape. In the present embodiment, the shape of the upper edge portion 741 and the opening shape of the lower edge portion 742 of the third hole portion 74 are each rectangular. The rectangle of the upper edge portion 741 of the third hole portion 74 and the rectangle of the lower edge portion 742 have the same dimension in the radial direction of the gear 4, and the dimension of the rectangle of the lower edge portion 742 is larger in the direction orthogonal to the radial direction. The inner peripheral surface of the third hole portion 74 has a first inner peripheral surface 743 located on one side in the rotational direction, a second inner peripheral surface 744 located on the other side in the opening direction, a third inner peripheral surface 745 located on the inner side in the radial direction, and a fourth inner peripheral surface 746 located on the outer side in the radial direction. The second inner peripheral surface 744, the third inner peripheral surface 745, and the fourth inner peripheral surface 746 are surfaces orthogonal to the plate surface of the gear 4, that is, vertical surfaces. The first inner peripheral surface 743 is an inclined surface that gradually slopes from the upper side to the lower side from the other side to the one side in the rotational direction. The radial dimension of the second hole portion 56 is substantially the same as the diameter dimension of the sphere 81. The rotational dimension of the third hole portion 74 is larger than the diameter dimension of the sphere 81. The first inner peripheral surface 743 of the third hole portion 74 is defined as a second inclined surface 743. The sphere 81 can roll on the second inclined surface 743.

[0033] The first hole portion 49, the second hole portion 56, and the third hole portion 74 are arranged at positions that overlap or do not overlap in the vertical direction as the gear 4 and the arm 5 rotate. When the first hole portion 49 and the second hole portion 56 overlap in the vertical direction, it is possible to arrange the sphere 81 so as to span the first hole portion 49 and the second hole portion 56. The position of the sphere 81 arranged so as to span the first hole portion 49 and the second hole portion 56 is defined as a first position 82 (see FIGS. 16 and 17). When the second hole portion 56 and the third hole portion 74 overlap in the vertical direction, it is possible to arrange the sphere 81 so as to span the second hole portion 56 and the third hole portion 74. The position of the sphere 81 arranged so as to span the second hole portion 56 and the third hole portion 74 is defined as a second position 83 (see FIG. 15).

[0034] When the shoji 22 is in the closed state and the locking portion 24 is in the locked state, as shown in FIG. 13, the second hole portion 56 and the third hole portion 74 overlap in the vertical direction, and the first hole portion 49 formed in the gear 4 is located on the other side in the rotational direction than the second hole portion 56 and the third hole portion 74. As shown in FIG. 15, the spherical body 81 is disposed at the second position 83 and is in a state of riding on the upper surface of the gear 4. When the shoji 22 is in the closed state and the locking portion 24 is in the locked state, similar to the first embodiment, the convex portion 54 of the arm 5 is adjacent to the first end portion 44 of the long hole portion 43 of the gear 4. From this state, when the operation portion 3 is operated to open the shoji 22 and the gear 4 rotates in the opening direction, only the gear 4 rotates and the arm 5 does not rotate. Further, when the gear 4 rotates in the opening direction, as shown in FIG. 14, the first end portion 44 of the long hole portion 43 of the gear 4 separates from the convex portion 54, and the second end portion 45 contacts the convex portion 54 from the other side in the rotational direction. In a state where the second end portion 45 contacts the convex portion 54 from the other side in the rotational direction, as shown in FIG. 16, the first hole portion 49 overlaps below the second hole portion 56 and the third hole portion 74. As a result, the spherical body 81 descends and is disposed at the first position 82 spanning the first hole portion 49 and the second hole portion 56. The spherical body 81 is in a state of being disengaged from the third hole portion 74.

[0035] When only the gear 4 rotates in the opening direction from the state where the shoji 22 is in the closed state and the locking portion 24 is in the locked state as described above, the lock operation portion 48 moves from one side in the width direction toward the other side, the gear interlocking portion 243 moves to one side in the width direction, and the locking portion 24 becomes the unlocked state.

[0036] When the operation unit 3 is operated to further open the shoji 22 and the gear 4 rotates a predetermined amount in the opening direction, the convex portion 54 of the arm 5 is pushed against the second end portion 45 of the long hole portion 43 of the gear 4, and the rotational force of the gear 4 is transmitted to the arm 5 via the spherical body 81. For this reason, the arm 5 rotates in the opening direction together with the gear 4. At this time, since it is in the unlocked state, when the arm 5 rotates together with the gear 4, the shoji 22 becomes the open state. Since the first hole portion 49 overlaps below the second hole portion 56 and the third hole portion 74, and the gear 4 and the arm 5 rotate in the opening direction, the first hole portion 49 and the second hole portion 56 are arranged on the other side in the rotational direction than the third hole portion 74. Similar to the first embodiment, the lock operation portion 48 may be set to be separated from the gear interlocking portion 243 that has moved to one side in the width direction when the shoji 22 is in the open state.

[0037] When the shoji 22 is in the open state and the lock portion 24 is in the unlocked state, the convex portion 54 of the arm 5 is adjacent to the second end portion 45 of the long hole portion 43 of the gear 4, the spherical body 81 is disposed at the first position 82, and the first hole portion 49 and the second hole portion 56 are disposed on one side in the rotational direction than the third hole portion 74. From this state, when the operation unit 3 is operated to close the shoji 22 and the gear 4 rotates in the closing direction, the first end portion 44 of the long hole portion 43 of the gear 4 does not contact the convex portion 54 of the arm 5 from one side in the rotational direction and does not push the convex portion 54 to the other side in the rotational direction, but the rotational force of the gear 4 is transmitted to the arm 5 via the spherical body 81 disposed at the first position 82. Thereby, the gear 4 and the arm 5 rotate in the closing direction, and the shoji 22 moves toward the closed position. While the gear 4 and the arm 5 rotate in the closing direction and the shoji 22 moves toward the closed position, the first end portion 44 of the long hole portion 43 of the gear 4 contacts the convex portion 54 of the arm 5 from one side in the rotational direction and pushes the convex portion 54 to the other side in the rotational direction.

[0038] When the shoji 22 moves to the closed position, as shown in FIG. 17, the first hole 49 and the second hole 56 overlap with the portion on the other side in the rotational direction of the third hole 74, that is, the portion where the second inclined surface 743 is formed. Thus, since the third hole 74 is above the second hole 56, the sphere 81 at the first position 82 can move upward. When the gear 4 rotates in the closing direction in this state, the sphere 81 is pushed in the diagonal direction that is on the other side in the rotational direction and upward by the first inclined surface 493 of the first hole 49 of the gear 4, and thus moves in this diagonal direction. At this time, since the sphere 81 is disposed below the second inclined surface 743 of the third hole 74, it moves in the same diagonal direction as the direction in which it is pushed by the first inclined surface 493 along the second inclined surface 743 and is disposed at the second position 83. When the sphere 81 is disposed at the second position 83, the first hole 49 is disposed on the other side in the rotational direction than the second hole 56 and the third hole 74. Therefore, the upper surface of the gear 4 is disposed below the second hole 56, and the sphere 81 is disposed on the gear 4. At this time, the convex portion 54 of the arm 5 is adjacent to the second end portion 45 of the long hole portion 43 of the gear 4 and is not in contact with the first end portion 44.

[0039] From this state, when the operation unit 3 is operated to close the shoji 22 and the gear 4 rotates in the closing direction, only the gear 4 rotates and the arm 5 does not rotate. When the gear 4 rotates in the closing direction, the lock operation portion 48 of the gear 4 moves from the other side in the width direction toward one side, so that the gear interlocking portion 243 interlocks and moves to the other side in the width direction, and the lock portion 24 becomes a locked state. In this way, the shoji 22 becomes a closed state and the lock portion 24 becomes a locked state.

[0040] The fitting 1B according to the second embodiment has a second rotation transmission switching unit 8 that switches between transmitting and non-transmitting the rotational force of the gear 4 to the arm 5. When the spherical body 81 is disposed at the first position 82, the arm 5 is interlocked with the gear 4, and when it is disposed at the second position 83, only the gear 4 rotates. When the shoji 22 is in the closed state and the locking unit 24 is in the locked state, the spherical body 81 is disposed at the second position 83, and when the gear 4 rotates in the opening direction, only the gear 4 rotates without the arm 5 rotating. By this rotation of the gear 4, the locking unit 24 can be unlocked. When the gear 4 moves to the position where the locking unit 24 is unlocked, the spherical body 81 moves from the second position 83 to the first position 82, and the arm 5 rotates in conjunction with the rotation of the gear 4. Thereby, the shoji 22 is in the open state. When the shoji 22 is in the open state and is unlocked, since the spherical body 81 is disposed at the second position 83, the arm 5 rotates in the closing direction in conjunction with the rotation of the gear 4 in the closing direction, and the shoji 22 is in the closed state. When the shoji 22 is in the closed state, since the spherical body 81 moves from the first position 82 to the second position 83, when the gear 4 rotates in the closed state, only the gear 4 rotates in the closed state without the arm 5 rotating. Thereby, the locking unit 24 can be set in the locked state. With a series of operations, unlocking of the locking unit 24, opening of the shoji 22, closing of the shoji 22, and locking of the locking unit 24 can be performed. In the fitting 1B according to the second embodiment, the unlocking and locking operations of the locking unit 24 and the opening and closing operations of the shoji 22 can be linked with a simple structure including the first hole portion 49, the second hole portion 56, the third hole portion 74, and the spherical body 81.

[0041] The fitting 1B according to the second embodiment has a first inclined surface 493 formed on the gear 4 to guide the sphere 81 disposed at the first position 82 to the second position 83, and a second inclined surface 743 is formed on the upper plate portion 72 of the shaft portion 7 to guide the sphere 81 that is guided by the first inclined surface 493 and moves from the first position 82 to the second position 83 to the second position 83. Thereby, since the sphere 81 can be reliably moved from the first position 82 to the second position 83, it is possible to prevent the rotational force of the unnecessary gear 4 from being transmitted to the arm 5 by locking and unlocking the locking portion 24 while the sphere 81 is disposed at the first position 82. By forming the first inclined surface 493 and the second inclined surface 743, the sphere 81 can be smoothly moved from the lower first position 82 to the upper second position 83.

[0042] (Third Embodiment) As shown in FIGS. 18 and 19, the fitting 1C according to the third embodiment has a first rotation transmission switching portion 6 and a second rotation transmission switching portion 8C, similar to the second embodiment. The second rotation transmission switching portion 8C of the third embodiment is provided with a pressing member 84 that presses the sphere 81 disposed at the second position 83 toward the arm 5 inside the third hole portion 74 of the second rotation transmission switching portion 8 of the second embodiment.

[0043] The pressing member 84 is configured by a torsion spring, a coil spring, or the like to press the sphere 81 downward. In the fitting 1C according to the third embodiment, when the pressing member 84 presses the sphere 81 downward, when the first hole portion 49 overlaps with the second hole portion 56 and the third hole portion 74, the sphere 81 at the second position 83 can be reliably moved to the first position 82.

[0044] (Fourth Embodiment) As shown in FIG. 20, in the fitting 1D according to the fourth embodiment, the lock operation portion 48D of the gear 4 is different from the lock operation portion 48 of the above-described embodiment. The lock operation portion 48D is provided on the non-tooth forming portion 47 of the gear 4 and protrudes outward in the radial direction. On one side in the rotation direction of the tip portion of the lock operation portion 48D, a first corner portion 481 is formed, and on the other side in the rotation direction, a second corner portion 482 is formed. In the gear interlocking portion 243D of the lock portion 24, a recess 244 into which the lock operation portion 48D is inserted when the gear 4 rotates is formed. When the gear 4 rotates in the opening direction and the lock operation portion 48D is inserted into the recess 244 and the first corner portion 481 pushes the first side portion 244a on one side in the width direction of the recess 244 to the one side in the width direction, the gear interlocking portion 243D moves to the one side in the width direction and the lock portion 24 is in the unlocked state. When the gear 4 rotates in the closing direction and the lock operation portion 48D is inserted into the recess 244 and the second corner portion 482 pushes the second side portion 244b on the other side in the width direction of the recess 244 to the other side in the width direction, the gear interlocking portion 243D moves to the other side in the width direction and the lock portion 24 is in the locked state.

[0045] When the shoji 22 (see FIG. 1) is in the closed state and the lock portion 24 is in the locked state, as shown in FIG. 20, the first corner portion 481 of the lock operation portion 48D is inserted into the recess 244, and the second corner portion 482 is disposed outside the recess 244 (on the other side in the rotation direction). The first corner portion 481 is separated from the first side portion 244a of the recess 244. When the operation portion 3 is operated and the gear 4 rotates in the opening direction, as shown in FIG. 21, the first corner portion 481 comes into contact with the first side portion 244a of the recess 244 from the other side in the width direction, and when the gear 4 further rotates in the opening direction, as shown in FIG. 22, the gear interlocking portion 243D is pushed by the first corner portion 481 and moves to the one side in the width direction. As a result, the lock portion 24 is in the unlocked state. When the gear 4 further rotates in the opening direction to rotate the arm 5 and the shoji 22 is in the open state, as shown in FIG. 23, the lock operation portion 48D comes out of the recess 244.

[0046] When the operation unit 3 is operated to close the shoji 22 in the open state (see Fig. 2), the arm 5 together with the gear 4 also moves to the other side in the rotational direction, and the shoji 22 moves to the closed position. When the shoji 22 is disposed at the closed position, as shown in Fig. 25, the lock operation unit 48D is inserted into the recess 244, and the second corner portion 482 contacts the second side portion 244b of the recess 244. When the operation unit 3 is operated in this state, only the gear 4 rotates in the closing direction. Therefore, the gear linkage portion 243D is pushed by the second corner portion 482 of the lock operation unit 48D and moves to the other side in the width direction, resulting in the locked state. In this way, the shoji 22 is in the closed state, and the lock portion 24 is in the locked state.

[0047] The present disclosure is not limited to the above-described embodiments and can be appropriately modified. For example, in the above-described embodiment, the long hole portion 43 is provided in the gear 4, and the convex portion 54 is provided in the arm 5. A convex portion may be provided in the gear 4, a long hole portion into which the convex portion is inserted and which is movable inside may be provided in the arm 5, and the convex portion of the gear 4 may push the end portion of the long hole portion of the arm 5 to interlock the arm 5 with the rotation of the gear 4. In the above-described embodiment, the arm 5 rotates coaxially with the gear 4 in conjunction with the rotation of the gear 4. The arm 5 does not necessarily rotate coaxially with the gear 4.

[0048] In the above-described embodiment, the gear 4 and the arm 5 are arranged so as to overlap in the vertical direction, that is, they are vertically arranged. The gear 4 and the arm 5 may be arranged so as to overlap in the horizontal direction, that is, they may be horizontally arranged.

[0049] In the above-described embodiment, the fitting 1 is a vertically sliding window, but it may be a horizontally sliding window or a window other than the sliding window.

[0050] In the above-described second embodiment, the first inclined surface 493 is formed on the gear 4, and the second inclined surface 743 is formed on the upper plate portion 72 of the shaft portion 7. Both the first inclined surface 493 and the second inclined surface 743 do not necessarily need to be provided, or only one of them may be provided. In the above-described second embodiment, the shapes of the first hole portion 49, the second hole portion 56, and the third hole portion 74 may be other than the above.

[0051] In the above-described second embodiment, in order to prevent dust and dirt from flowing into the first hole portion 49, the second hole portion 56, and the third hole portion 74, and also to prevent the grease of the spherical body 81 from flowing out from the first hole portion 49, the second hole portion 56, and the third hole portion 74, ribs or gaskets may be provided on the gear 4, the arm 5, and the upper plate portion 72.

[0052] In the above embodiment, the gear 4 unlocks and locks the lock portion 24 by the movement of the gear interlocking portion 243 of the lock portion 24 in the width direction. The operation of the gear interlocking portion 243 for unlocking and locking the lock portion 24 may be other than the above.

[0053] In the contact portions and sliding portions of the respective components in the above-described fittings 1, 1B - 1D, application of grease or washers may be added to reduce friction and wear.

[0054] A link mechanism or the like for the purpose of expanding the opening and closing operation or adjusting the operating force may be separately provided between the shoji connecting portion 52 of the arm 5 and the shoji 22.

Explanation of Reference Numerals

[0055] 1, 1B - 1D Fittings, 3 Operating portion, 4 Gear, 5 Arm, 6 First rotation transmission switching portion, 8, 8C Second rotation transmission switching portion, 11 Opening portion, 22 Shoji, 24 Lock portion, 44 First end portion (inner edge portion), 45 Second end portion (inner edge portion), 49 First hole portion (gear hole portion), 54 Protrusion, 56 Second hole portion (arm hole portion), 72 Upper plate portion (space forming member), 74 Third hole portion (space portion), 81 Spherical body, 82 First position, 83 Second position, 84 Pressing member, 743 Second inclined surface, 493 First inclined surface

Claims

1. A shoji that moves to open and close an opening, a lock part that locks and unlocks the shoji closing the opening, an operation part that operates the movement of the shoji, a gear that rotates when the operation part is operated to lock and unlock the lock part, an arm that moves the shoji in conjunction with the gear when the rotational force of the gear is transmitted, and a first rotation transmission switching part that switches between transmission and non - transmission of the rotational force of the gear to the arm, when an operation to move the shoji to open the opening is performed by the operation part, the gear rotates in one rotational direction, and when an operation to move the shoji to close the opening is performed by the operation part, the gear rotates in the other rotational direction opposite to the one rotational direction, in the locked state, when the arm does not move in conjunction and only the gear rotates a predetermined amount in one rotational direction, the lock is released, and in the unlocked state, when the gear rotates a predetermined amount in the other rotational direction, the lock is set, the first rotation transmission switching part has a long hole part provided in either the gear or the arm and extending in the rotational direction of the gear, and a convex part provided on the other and protruding to the one side and inserted into the long hole part and movable in the rotational direction of the gear inside the long hole part, when one of the inner edge part of the long hole part and the convex part provided on the gear contacts the other from the other side in the rotational direction of the gear, and the gear rotates in one rotational direction, the rotational force of the gear is transmitted to the arm through the inner edge part of the long hole part and the convex part, when one of the inner edge part of the long hole part and the convex part provided on the gear does not contact the other from the other side in the rotational direction of the gear, even if the gear rotates in one rotational direction, the rotational force of the gear is not transmitted to the arm, in the locked state, a fitting in which one of the inner edge part of the long hole part and the convex part provided on the gear is arranged at an interval from the other on the other side in the rotational direction of the gear.

2. further has a second rotation transmission switching part that switches between transmission and non - transmission of the rotational force of the gear to the arm, the second rotation transmission switching part has a gear hole part provided in the gear, an arm hole part provided in the arm and overlapping the gear hole part, and a space part provided in a space - forming member arranged on the side opposite to the side where the gear of the arm is arranged and overlapping the arm hole part A sphere disposed at either a first position spanning the overlapping gear hole portion and the arm hole portion or a second position spanning the overlapping arm hole portion and the space portion, and when the sphere is disposed at the first position, the rotational force of the gear is transmitted to the arm via the sphere, when the sphere is disposed at the second position, the rotational force of the gear is not transmitted to the arm, in the locked state, the sphere is disposed at the second position, when the gear rotates a predetermined amount in one side of the rotational direction, the gear hole portion overlaps the arm hole portion and the space portion, and the sphere moves from the second position to the first position. When the gear further rotates in one side of the rotational direction, the rotational force of the gear is transmitted to the arm, in a state where the shoji opens the opening, the sphere is disposed at the first position, when the gear rotates a predetermined amount in the other side of the rotational direction, the gear hole portion and the arm hole portion overlap the space portion, and the sphere moves from the first position to the second position. When the gear further rotates in the other side of the rotational direction, only the gear rotates in the other side of the rotational direction and the rotational force of the gear is not transmitted to the arm. The fitting according to claim 1.

3. The space portion is formed in a space forming member located on the side opposite to the side where the gear of the arm is disposed, a first inclined surface for guiding the sphere disposed at the first position to the second position is formed on the gear, a second inclined surface for guiding the sphere guided by the first inclined surface and moving from the first position to the second position to the second position is formed on the space forming member. The fitting according to claim 2.

4. The fitting according to claim 2 or 3, further comprising a pressing member for pressing the sphere disposed at the second position toward the gear side.

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