JP2018193746A - Lock device, open/close device and fitting - Google Patents

Abstract

To provide a lock device which can be used without causing a failure even for a sliding door having a large height, an open/close device provided with the lock device, and a fitting provided with the open/close device.SOLUTION: An upper side pressure receiving member 42 of a lock device 30, which is provided along a lateral direction orthogonal to a sliding direction of a lock bar 38, includes: an operation surface 42a which is pressed by a drive pin 36 when a handle 28 is operated from a lock position to an unlock position; and an inclination surface 42b which is provided so as to be continuous from the operation surface 42a, which is inclined in an upward direction toward a tip side of the upper side pressure receiving member 42, and with which the drive pin 36 abuts under a condition that the handle 28 is placed at the unlock position.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a lock device, an opening / closing device, and a fitting.

  For example, Patent Document 1 discloses a lock device including a flat handle for opening / closing and locking a shoji supported by a frame. In this locking device, the handle is rotated to rotate the cam-like latch on the back side thereof, whereby the latch is engaged with the lock receiving member on the frame body side and the shoji is locked.

JP 2014-105487 A

  By the way, for a shoji with a large vertical dimension, for example, a vertically extending lock bar is supported along the side of the shoji so that it can be moved up and down, and the lock bar is slid in the up and down direction by rotating the handle. May be used. In this configuration, the shoji can be locked by engaging the lock pin provided on the lock bar with the lock receiving member on the frame body side.

  However, when such a locking device is used, when the height of the shoji is increased, the length of the lock bar needs to be increased accordingly, and the weight of the lock bar increases. For this reason, for example, when the handle is rotated to the unlock position and the lock bar is pushed upward to open the shoji, the lock bar may be lowered by its own weight, and the handle may be rotated in the locking direction. Then, when closing the open shoji, it is necessary to close the shoji after returning the handle in the lock position to the unlock position again, which is troublesome. In addition, when the shoji is accidentally closed while the handle is in the locked position, the lock pin may impact the lock receiving member and cause damage or the like. Such a problem can occur in the same manner even in a configuration in which the sliding resistance between the handle and the lock bar is small, regardless of the length of the lock bar.

  The present invention has been made in consideration of the above-described problems of the prior art, and can be used as a lock device that can suppress the occurrence of an unintended operation, an opening / closing device including the locking device, and a fitting including the opening / closing device. The purpose is to provide.

  A locking device according to the present invention is a locking device that locks a shoji in a closed position with respect to a frame, and rotates with a rotation operation unit and a vertical displacement when the rotation operation unit is rotated. An operating drive member, a lock bar that is slidable in the vertical direction and that can be engaged and disengaged with respect to the lock receiving member, and the drive member that is provided so as to protrude from one side surface of the lock bar and pivots upward And the upper pressure receiving member is pressed by the drive member to raise the lock bar when the rotation operation portion is rotated from the lock position to the unlock position. The lock bar is lowered and engaged with the lock receiving member when the rotation operating portion is rotated from the unlocked position to the locked position while being disengaged from the receiving member. Thus, the shoji is locked in a closed position with respect to the frame, and the upper pressure receiving member is provided along a lateral direction perpendicular to the sliding direction of the lock bar, Is operated to be pressed by the drive member when operated from the lock position toward the unlock position, and is provided so as to continue from the operation surface, and upward toward the distal end side of the upper pressure receiving member And an inclined surface with which the driving member abuts in a state where the rotation operation portion is in the unlocked position.

  According to such a configuration, the drive member contacts the inclined surface of the upper pressure receiving member at the unlock position. For this reason, it is possible to avoid the occurrence of a problem that the drive member at the unlock position unintentionally turns downward in the lock direction due to the weight of the lock bar. Therefore, even if the lock device is installed on a shoji screen having a height, for example, and the weight of the lock bar is increased, it is possible to prevent the occurrence of the above problems.

  In the locking device according to the present invention, the rotation operation portion is in the unlock position and the drive member is in contact with the inclined surface and passes through the axis center of the drive member and the rotation center of the rotation operation portion. An intersection angle between the second straight line along the operation surface and the inclined surface when the first straight line is configured to be orthogonal to the inclined surface is referred to as a reference angle, and the second straight line and the The crossing angle with the inclined surface may be set to be equal to or less than the reference angle. Then, when the drive member is turned upward from the lock position toward the unlock position, the pressing force by the drive member is reliably transmitted as a sliding force upward of the lock bar, so that the rotation operation unit can be smoothly operated. It becomes possible.

  In the locking device according to the present invention, the rotation operation unit is configured to rotate 90 degrees from the locked position to the unlocked position, and in the locked position, the drive member has an axis center downward from the lateral direction. While the drive member is set at a position rotated 45 degrees, the drive member is set at a position where the axis center of the drive member is turned 45 degrees upward from the lateral direction at the unlock position. The crossing angle between the inclined surfaces may be set to 45 degrees or less. Then, when the drive member is turned upward from the lock position toward the unlock position, the pressing force by the drive member is reliably transmitted as a sliding force upward of the lock bar, so that the rotation operation unit can be smoothly operated. It becomes possible.

  In the locking device according to the present invention, the locking device according to the present invention includes a lower pressure receiving member that is disposed to face the upper pressure receiving member and protrudes from one side surface of the lock bar, and is pressed by the driving member that turns downward. The lower pressure receiving member is provided along a lateral direction orthogonal to the sliding direction of the lock bar, and is pressed by the driving member when the rotation operation unit is operated from the unlock position toward the lock position. The lower operation surface is continuous with the lower operation surface, and is inclined downward toward the distal end side of the lower pressure receiving member, and the rotation operation unit is in the locked position. A configuration having a lower inclined surface with which the driving member abuts may be employed. If it does so, a lock bar can be rotated 180 degree | times and used, for example, and versatility will improve.

  In the locking device according to the present invention, the drive member may be constituted by a pin-shaped member whose outer peripheral surface is in contact with the operation surface and the inclined surface. Then, the lock bar can be operated by smoothly sliding the outer peripheral surface of the pin-shaped member on the operation surface or the inclined surface. Moreover, even if the driving member is a pin-shaped member, the pin-shaped member abuts against the inclined surface of the upper pressure receiving member at the unlocked position, so that an unintentional operation of the locking device can be prevented.

  In the lock device according to the present invention, the rotation operation unit may have a handle provided so as to be able to protrude from the outer surface of the shoji. Then, the lock device can smoothly perform the lock and unlock operations using the handle. In addition, it is possible to prevent the handle from unintentionally moving from the unlocked position to the locked position.

  The opening / closing device according to the present invention includes the shoji having the lock device having the above-described configuration, and the frame having the lock receiving member while supporting the shoji so as to be opened and closed. According to such a configuration, the lock bar in the unlocked position is unintentionally lowered to the lock position due to its weight and accidentally closes the shoji, so that the lock bar or the lock pin provided on the lock bar is locked. It is possible to avoid a situation in which the member is shocked and damaged.

  The joinery according to the present invention is a joinery including the opening / closing device having the above-described configuration and a window connected to the vertical frame of the frame, and the opening / closing device is configured to open the frame when the shoji is opened. It is a ventilator that forms a ventilation passage in which a body opening communicates indoors and outdoors and takes outside air into the room. According to such a configuration, by providing the lock device in a ventilator that is often configured to be vertically longer than a shoji used for a general window or the like, an unintended operation of the drive member or the rotation operation unit can be performed. Occurrence can be reliably prevented.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent producing the malfunction which a locking device operate | moves unintentionally.

It is the figure which looked at the fitting provided with the switchgear concerning one embodiment of the present invention from the outdoor side. It is the figure which looked at the fitting shown in FIG. 1 from the indoor side. It is a top view of a handle and its peripheral parts. It is the front view which looked at the handle | steering-wheel and its peripheral component shown in FIG. 3 from the indoor side. FIG. 5A is a configuration diagram of the locking device viewed from the back side of the handle, FIG. 5A is a diagram illustrating a state where the handle is in the locked position, and FIG. 5B is a diagram illustrating a state where the handle is in the unlocked position. FIG. FIG. 6 (A) is a diagram illustrating a locked state in which a lock pin is engaged with a lock receiving member, and FIG. 6 (B) is a diagram illustrating an operation state of the lock device. FIG. 6C is a diagram showing the state of the drive pin when the handle is in the locked position, and FIG. 6D is a diagram showing the unlocked state in which the handle is unlocked. It is a figure which shows the state of the drive pin in the case of being in a locked position. FIG. 7A is an operation diagram illustrating a state in which the lock device is operated from a locked state to an unlocked state, FIG. 7A is a diagram illustrating a locked position, and FIG. 7B is a state illustrated in FIG. 7C is a view showing a state where the handle is rotated in the unlocking direction, and FIG. 7C is a view showing a state where the handle is further rotated in the unlocking direction from the state shown in FIG. 7B. FIG. 7D is a diagram illustrating the unlock position. It is a principal part enlarged view of the locking device of the unlocked state shown in FIG.7 (D).

  FIG. 1 is a view of a joinery 12 equipped with an opening / closing device 10 according to an embodiment of the present invention as seen from the outdoor side. FIG. 2 is a view of the joinery 12 shown in FIG. 1 viewed from the indoor side. The opening / closing device 10 of the present embodiment is a ventilation device that is installed in an opening of a building outer wall as a fitting 12 connected to a window 14 and takes in outdoor air to ventilate the interior.

  As shown in FIGS. 1 and 2, the window 14 is a fitting window including a window frame 16 and a window glass 18 that is fitted into the opening of the window frame 16. The window frame 16 has a configuration in which an upper window frame 16a, a lower window frame 16b, and left and right vertical window frames 16c and 16d are framed four times. Each of the window frames 16a to 16d is an extruded shape of a metal such as aluminum or a resin such as vinyl chloride resin (PVC).

  In this embodiment, the fitting 12 of the structure which connected the window 14 and the opening / closing apparatus 10 of the fitting killing window is illustrated. The joinery 12 may have a configuration in which various types of windows such as sliding windows such as sliding windows, rotating windows such as open windows, and raising and lowering windows and the opening / closing device 10 are connected to the opening / closing device 10 other than the fitting window. The joiner 12 may be configured such that the opening / closing device 10 and the window 14 are not connected, and are independently installed with the outer wall of the building interposed therebetween, for example. The opening / closing device 10 may be installed alone.

  As shown in FIG. 1 and FIG. 2, the opening / closing device 10 includes a frame body 20, and inner and outer obstacles 24 and 25 that open and close the opening 22 of the frame body 20. The opening / closing device 10 is a ventilator provided with a ventilation path between the inner shoji 24 and the outer shoji 25, for example.

  The frame 20 has a configuration in which an upper frame 20a, a lower frame 20b, and left and right vertical frames 20c and 20d are framed four times. Each of the frames 20a to 20d is an extruded shape of a metal such as aluminum or a resin such as vinyl chloride resin (PVC). The switchgear 10 constitutes the joinery 12 by connecting and fixing one vertical frame 20 c to one vertical window frame 16 c of the window 14.

  In this application, the prospective direction refers to the indoor / outdoor direction of the fitting 12, that is, the direction from the indoor side to the outdoor side or the opposite direction (the direction indicated by the arrow Z in the figure), and the prospective surface is along the prospective direction. An extended surface. The finding direction is a direction orthogonal to the prospective direction, and in the case of the vertical frames 20c, 20d that are long in the vertical direction, the horizontal direction (direction indicated by the arrow X in the figure) orthogonal to the longitudinal direction is referred to. In the case of the upper frame 20a and the lower frame 20b that are long in the direction, the vertical direction (the direction indicated by the arrow Y in the figure) perpendicular to the longitudinal direction is referred to. The finding surface is a surface along the finding direction. In other words, in each figure, the direction indicated by the arrow X is the left-right direction of the fitting 12, the direction indicated by the arrow Y is the vertical direction of the fitting 12, and the direction indicated by the arrow Z is the depth direction of the fitting 12. Further, the inner side (inner circumference) of the frame-shaped member refers to, for example, an in-frame portion provided with the opening 22 of the frame body 20. The outside (outer periphery) of the frame-shaped member refers to, for example, a portion outside the frame that is fixed to the building frame of the frame 20.

  As shown in FIG. 2, a handle 28 for opening / closing operation is provided on the indoor side surface of the inner shroud 24. The handle 28 is a rotation operation unit of a lock device 30 (see FIG. 5A) for locking or unlocking the inner shroud 24 with respect to the frame body 20. The external shoji 25 may be omitted. The locking device 30 (handle 28) may be provided on the external shoji 25.

  Next, a configuration example of the handle 28 of the lock device 30 will be described. FIG. 3 is a plan view of the handle 28 and its peripheral components. FIG. 4 is a front view of the handle 28 and its peripheral components shown in FIG. 3 as viewed from the indoor side. In the following description, the locking device 30 will be described with reference to a state in which the locking device 30 is attached to the inner limb 24 as shown in FIG.

  As shown in FIGS. 3 and 4, the handle 28 is a belt-like plate having one end formed in an arc shape. The handle 28 is supported so as to be rotatable with respect to the handle base 32.

  The handle base 32 has a block shape in which both ends are formed in an arc shape, and includes a main body portion 32a, a flange portion 32b, and a storage recess 32c. The main body 32a is an elliptical columnar portion extending in the inner and outer directions. The flange portion 32b is a portion where the indoor side edge portion of the main body portion 32a is slightly extended. The storage recess 32c is a shallow recess provided on the surface of the flange portion 32b and capable of storing the handle 28 provided on the indoor side.

  The handle 28 is disposed on the handle recess 32 c side of the handle base 32. The handle 28 has a rotating shaft member 28a protruding on the back surface on one end side formed in an arc shape. The rotary shaft member 28a penetrates from the housing recess 32c to the main body 32a in the Z direction, and is supported rotatably with respect to the handle base 32. Further, the handle 28 is connected to the rotary shaft member 28a so as to be swingable toward the indoor side (see the handle 28 indicated by a two-dot chain line in FIG. 3). As for the rotating shaft member 28a, the rotary body 34 is being fixed to the front-end | tip part which protruded from the main-body part 32a. The rotating body 34 is, for example, a fan-shaped plate (see FIG. 5A). The rotating body 34 is provided with a cylindrical driving pin (driving member) 36 having an axial center eccentric from the rotating shaft member 28a. The drive pin 36 protrudes from the surface of the rotating body 34 toward the side opposite to the handle base 32 side. In the case of this embodiment, the handle 28 is configured to be able to rotate 90 degrees from the locked position indicated by the solid line in FIG. 4 to the unlocked position indicated by the two-dot chain line. The drive pin 36 turns around the rotation shaft member 28a as a turning center in accordance with the rotation operation of the handle 28. The drive member that is turned by the handle 28 may be, for example, a plate-like member, a prismatic member, or the like other than the drive pin 36 that is a pin-like member.

  The handle 28 can be stored in the storage recess 32c of the handle base 32 at the lock position indicated by the solid line in FIG. The storage recess 32c has a shape in which an operation space 32d is formed on the other end side of the stored handle 28 opposite to the rotary shaft member 28a side. The handle 28 in the locked position can be raised to the near side with the fingertip using the operation space 32d (see the handle 28 indicated by a two-dot chain line in FIG. 3). When rotating the handle 28, the handle 28 raised from the storage recess 32c may be pushed downward with the rotary shaft member 28a as the center of rotation.

  Next, a configuration example of the lock device 30 will be described. FIG. 5 is a configuration diagram of the locking device 30 as viewed from the back side of the handle 28, FIG. 5A is a diagram illustrating a state in which the handle 28 is in the locked position, and FIG. It is a figure which shows the state which is in an unlocking position. FIG. 6 is a diagram illustrating an operation state of the lock device 30, FIG. 6A is a diagram illustrating a lock state in which the lock pin 40 is engaged with the lock receiving member 46, and FIG. FIG. 6C is a diagram illustrating an unlocked state in which the lock pin 40 is disengaged from the lock receiving member 46, and FIG. 6C is a diagram illustrating a state of the drive pin 36 when the handle 28 is in the locked position. FIG. 6D is a diagram showing the state of the drive pin 36 when the handle 28 is in the unlock position.

  As shown in FIGS. 5A to 6D, the locking device 30 includes a handle 28, a drive pin 36, a lock bar 38, a lock pin 40, an upper pressure receiving member 42, and a lower pressure receiving member 44. With.

  The handle 28 is configured to be rotated 90 degrees as described above. As shown in FIG. 6C, when the handle 28 is in the locked position, the drive pin 36 is turned 45 degrees downward from the horizontal direction (X direction). As shown in FIG. 6D, when the handle 28 is in the unlock position, the drive pin 36 is turned 45 degrees upward from the horizontal direction (X direction). In other words, when the handle 28 is in the locked position, the straight line L1 passing through the rotation center O1 of the rotary shaft member 28a and the shaft center O2 of the drive pin 36 is inclined 45 degrees downward from the horizontal straight line L2. Is set. When the handle 28 is in the unlock position, the straight line L1 is set to be inclined 45 degrees upward from the horizontal straight line L2. The drive pins 36 thus pivot 45 degrees up and down from the horizontal straight line L2. Accordingly, the maximum displacement amount of the drive pin 36 can be secured with the configuration using the handle 28 that rotates 90 degrees, and the displacement amount H of the lock bar 38 (lock pin 40) is also maximized (see FIG. 5). ).

  The lock bar 38 is a bar-like member extending along the vertical direction. The lock bar 38 is supported so as to be slidable in the vertical direction with respect to the prospective surface 24a (refer to FIG. 2) which is the side surface of the inner door 24 on the door tip side. The lock bar 38 is set to have a larger length dimension when the height dimension of the inner shroud 24 to be installed becomes larger.

  The lock pin 40 is a cylindrical pin. The lock pin 40 protrudes from a side surface 38 a that faces the one vertical frame 20 c of the frame 20 of the lock bar 38. The lock pins 40 are provided, for example, near the upper end and the lower end of the lock bar 38, respectively. The number of the lock pins 40 can be appropriately changed according to the length dimension of the lock bar 38 and the like. For example, the lock bar 38 is accommodated in a pocket-shaped recess formed on the prospective surface 24a of the inner shroud 24 and extending in the vertical direction so as to be vertically movable. Each lock pin 40 protrudes from the opening of the pocket-shaped recess to the vertical frame 20c side. Each lock pin 40 can be engaged with a lock receiving member 46 on the vertical frame 20c side in a state where the inner shroud 24 is in the closed position.

  The lock receiving member 46 is fixed to the prospective surface 20e (see FIG. 2) of the vertical frame 20c that faces the prospective surface 24a of the inner shroud 24. The lock receiving member 46 has a lock plate 46b that is bent in an orthogonal direction from an attachment plate 46a that is attached and fixed to the prospective surface 20e (see FIG. 6A). The lock plate 46 b is a plate that can be engaged with the lock pin 40.

  The upper pressure receiving member 42 is a protruding piece that protrudes in the lateral direction (X direction) intersecting the vertical direction from the side surface (one side surface) 38 b of the lock bar 38 opposite to the lock pin 40. The lower pressure receiving member 44 is a protruding piece that is disposed to face the lower side of the upper pressure receiving member 42 and protrudes from the side surface (one side surface) 38b. The upper pressure receiving member 42 and the lower pressure receiving member 44 form a pair of fork shapes having a vertically symmetrical structure. The upper pressure receiving member 42 and the lower pressure receiving member 44 are provided at the approximate center in the longitudinal direction of the lock bar 38 between the upper and lower lock pins 40, 40. In the case of the present embodiment, the upper pressure receiving member 42 and the lower pressure receiving member 44 project from a support plate 48 attached and fixed to the side surface 38a of the lock bar 38, and penetrate the lock bar 38 in the X direction from the side surface 38b. It protrudes.

  The upper pressure receiving member 42 is a member that is pressed by the drive pin 36 that pivots upward in the locking direction. The upper pressure receiving member 42 has an operation surface 42a and an inclined surface 42b. The operation surface 42 a is a lower surface of the upper pressure receiving member 42 and is a surface along a lateral direction (X direction) orthogonal to the sliding direction (Y direction) of the lock bar 38. The inclined surface 42 b is a surface that is provided so as to continue from the operation surface 42 a and is inclined upward toward the distal end side of the upper pressure receiving member 42.

  The lower pressure receiving member 44 is a protruding piece that protrudes in the lateral direction (X direction) intersecting the vertical direction from the side surface (one side surface) 38 b of the lock bar 38 opposite to the lock pin 40. The lower pressure receiving member 44 is a member that is pressed by the drive pin 36 that pivots downward in the unlocking direction. The lower pressure receiving member 44 has an operation surface (lower operation surface) 44a and an inclined surface (lower inclined surface) 44b. The operation surface 44 a is an upper surface of the lower pressure receiving member 44 and is a surface along a lateral direction (X direction) orthogonal to the sliding direction (Y direction) of the lock bar 38. The inclined surface 44 b is a surface that is provided so as to continue from the operation surface 44 a and is inclined downward toward the distal end side of the lower pressure receiving member 44. The lower pressure receiving member 44 has a gap in which the drive pin 36 can be inserted between the operation surface 44 a and the operation surface 42 a of the upper pressure receiving member 42. This gap is set to be slightly larger than the outer diameter of the drive pin 36. Thereby, the upper pressure receiving member 42 and the lower pressure receiving member 44 can convert the turning motion of the drive pin 36 into the vertical motion of the lock bar 38 with a minimum loss. The inclined surfaces 42b and 44b may be configured by curved surfaces.

  Next, an operation example of the locking device 30 will be described. FIG. 7 is an operation diagram showing a state in which the lock device 30 is operated from the locked state to the unlocked state.

  In the locked state in which the handle 28 is in the locked position shown in FIG. 6C, the lock device 30 is in the position where the lock bar 38 is slid downward as shown in FIGS. 5A and 6A. The lock pin 40 is engaged with the lock plate 46 b of the lock receiving member 46. In this state, the drive pin 36 is in a position in contact with the inclined surface 44b of the lower pressure receiving member 44 as shown in FIG.

  In the locking device 30, when the handle 28 is rotated from the lock position toward the unlock position, the drive pin 36 pivots upward about the rotation shaft member 28a. Then, the drive pin 36 contacts the upper pressure receiving member 42. In the case of the present embodiment, the drive pin 36 first comes into contact with or near the corner at the boundary between the operation surface 42a and the inclined surface 42b as shown in FIG. 7B.

  When the handle 28 is further rotated toward the unlock position from the state shown in FIG. 7B, the drive pin 36 pushes it up while contacting the operation surface 42a as shown in FIG. 7C. For this reason, the lock bar 38 slides relatively upward with respect to the inner limb 24, and the lock pin 40 also moves upward.

  When the handle 28 is finally rotated 90 degrees to the unlock position, the lock bar 38 is slid upward as shown in FIGS. 5B and 6B, and the lock pin 40 is locked. The engagement state of the receiving member 46 with the lock plate 46b is released. That is, the lock device 30 is unlocked. In this state, the drive pin 36 is in a position in contact with the inclined surface 42b of the upper pressure receiving member 42 as shown in FIG. By pulling the handle 28 to the near side from this state, the inner shoji 24 can be opened to the indoor side, and in conjunction with this, the outer shoji 25 is opened to the outdoor side. As a result, the window device 10 forms a ventilation passage through which the opening 22 of the frame 20 communicates indoors and outdoors and takes outside air indoors.

  FIG. 8 is an enlarged view of a main part of the locking device 30 in the unlocked state shown in FIG.

  As shown in FIG. 8, the lock device 30 is in a position where the drive pin 36 contacts the inclined surface 42 b of the upper pressure receiving member 42 in the unlocked state. In the following description, in this state, a straight line (first straight line) L1 passing through the shaft center O2 of the drive pin 36 and the rotation center O1 of the rotating shaft member 28a is configured to be orthogonal to the inclined surface 42b. In this configuration, the intersection angle θ between the straight line (second straight line) L2 along the operation surface 42b and the inclined surface 42b is referred to as a reference angle. In the present embodiment, as shown in FIG. 6B, the straight line L1 is set at an angle inclined by 45 degrees with respect to the straight line L2 in the unlocked state. Therefore, the angle α in FIG. 8 is 45 degrees, and the reference angle that is the intersection angle θ when the straight line L1 is orthogonal to the inclined surface 42b is 45 degrees.

  Therefore, first, consider a configuration in which the crossing angle θ is set to 45 degrees, which is the reference angle, in the locking device 30, for example.

  In this configuration, the total weight of the lock bar 38 including the lock pin 40, the support plate 48, the upper pressure receiving member 42 and the lower pressure receiving member 44 is referred to as a load P. Then, the force applied by the load P in the turning direction (locking direction) of the drive pin 36 is P × cos 90 ° = 0. For this reason, the locking device 30 can prevent the load P from the lock bar 38 rising in the unlocking direction from turning the drive pin 36 in the unlocking direction.

  Thus, for example, the handle 28 can be prevented from unintentionally rotating to the locked position due to the load P in a state where the inner impeller 24 is in the open position. As a result, since the handle 28 is always maintained in the unlocked position when the inner shroud 24 is in the open position, when closing the inner shroud 24, the inner shroud 24 is closed without rotating the handle 28 again. be able to. Further, the handle 28 is unintentionally rotated to the locked position when the inner shroud 24 is in the open position, and when the inner shroud 24 is closed, the lock pin 40 comes into contact with the lock receiving member 46 and is damaged. Does not cause any problems.

  However, when the crossing angle θ is set to the reference angle of 45 degrees, when the locking device 30 moves from the locked position to the unlocked position, the drive pin 36 contacts the inclined surface 42b as shown in FIG. After the contact, the force of the drive pin 36 is not smoothly converted to the upward direction of the upper pressure receiving member 42, and the operation force of the handle 28 may be excessively required.

  Therefore, the optimum angle of the intersection angle θ between the straight line L2 and the inclined surface 42b will be described next.

  It is desirable that the intersection angle θ can smoothly rotate the handle 28 in the unlocking direction while preventing the handle 28 from rotating due to the load P based on the weight of the lock bar 38.

  For example, the load P due to the lock bar 38 having a total length of 2400 mm is 3.6 (N), the rotational resistance f when the drive pin 36 is turning is 0.9 (N), and the turning force (turning moment) of the drive pin 36 is When F1 is 103.4 (N), the optimum value of the intersection angle θ can be calculated as follows. The turning force F1 is driven from, for example, the rotational operation force F2 (for example, 30 (N)) of the handle 28, the distance R from the operation position of the handle 28 to the rotary shaft member 28a, and the rotational center O1 of the rotary shaft member 28a. F1 = (F2 × R) / r can be calculated using the distance r to the axis center O2 of the pin 36.

First, the crossing angle θ at which the handle 28 does not rotate due to the load P is expressed as the following equation A.
f-Pcos (45 ° + θ)> 0 (Formula A)
Next, the crossing angle θ that the handle 28 can push up with the rotational operation force R2 (= 30 (N)) is expressed by the following equation B.
F1 cos (45 ° + θ) −P> 0 (Formula B)
From the above, the intersection angle θ can be calculated as 32 ° <θ <42 °.

  Therefore, the optimum angle of the intersection angle θ is preferably set in the range of 32 degrees to 42 degrees as described above, and is preferably set to, for example, 35 degrees or 40 degrees in consideration of component intersection and the like. Then, the lock device 30 can smoothly operate the handle 28 from the unlock position to the lock position while preventing an unintended operation from the unlock position to the lock position due to the weight of the lock bar 38. If the rotational operation force F2 of the handle 28 can be larger than 30 (N) exemplified above, for example, the crossing angle θ may be set to 45 degrees that is the reference angle. Thus, in the lock device 30, the crossing angle θ is set to 45 degrees or less, preferably 32 degrees to 42 degrees. Even when the locking device 30 has a configuration in which the reference angle is set to other than 45 degrees, the steering angle 28 can be smoothly operated from the unlocked position to the locked position by setting the crossing angle θ to be equal to or smaller than the reference angle. It becomes possible.

  In particular, a ventilation device such as the opening / closing device 10 of the present embodiment is often configured to be vertically long and horizontally short. For this reason, the handle 28 cannot take a sufficient length dimension, and its rotational operation force is limited. However, the handle 28 can be smoothly operated from the locked position to the unlocked position by using the lock device 30 and can be prevented from being moved from the unlock position to the locked position unintentionally.

  In the lock device 30, as is clear from FIG. 5A and the like, the upper pressure receiving member 42 and the lower pressure receiving member 44 have a vertically symmetrical structure. Thereby, the locking device 30 has a configuration in which, for example, the opening direction of the inner pouch 24 to be installed is reversed, and the protruding directions of the upper pressure receiving member 42 and the lower pressure receiving member 44 from the lock bar 38 are reversed left and right. Can be used as is. That is, even if the lock bar 38 is rotated, for example, 180 degrees and the lower pressure receiving member 44 is placed on the upper side and the upper pressure receiving member 42 is placed on the lower side, the same function as the configuration shown in FIG. high. The lower pressure receiving member 44 may be configured without the inclined surface 44b. The lower pressure receiving member 44 may be omitted, and for example, when the handle 28 is operated in the locking direction, the lock bar 38 may be lowered by its own weight or a biasing force of a spring or the like.

  As described above, the locking device 30 has the inclined surface 42b on the upper pressure receiving member 42 with which the drive pin 36 comes into contact with the handle 28 in the unlocked position. For this reason, for example, even when the height of the inner shroud 24 is large and the weight of the lock bar 38 is increased, the drive pin 36 (handle 28) in the unlock position is not intended due to the weight of the lock bar 38. Therefore, it is possible to avoid the problem of turning downward in the locking direction. In particular, the opening / closing device 10 of the present embodiment is a ventilation device, and is often configured to be vertically longer than a shoji used for a general window or the like. For this reason, in the ventilation device, the weight of the lock bar 38 tends to increase. However, by applying the lock device 30 having the above-described configuration, it is possible to prevent unintended operation of the drive pin 36 and the handle 28.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  In the above description, the lock device 30 is exemplified as a configuration applied to the opening / closing device 10 which is a ventilation device. However, the opening / closing device 10 to which the locking device 30 is applied is a hinged window, a sliding window, a door lock such as a sliding door, and the like. May be.

  In the above description, the lock device 30 is configured to rotate the drive pin 36 with the handle 28. However, the handle 28 may be omitted, and the drive pin 36 may be rotated with a lock key serving as a rotation operation unit, for example.

  In the above description, the lock device 30 is configured to engage and disengage the lock pin 40 provided on the lock bar 38 with respect to the lock receiving member 46. However, for example, the lock receiving member 46 is configured with a pin, and the lock receiving member 46 is connected to the lock bar 38. It is good also as a structure which provided the hook etc. which engage / disengage to this pin.

  DESCRIPTION OF SYMBOLS 10 Opening and closing device, 12 Joinery, 14 Window, 16 Window frame, 20 Frame body, 22 Opening part, 24 Inner part, 25 Outer part, 28 Handle, 28a Rotating shaft member, 30 Locking device, 32 Handle base, 36 Drive pin, 38 lock bar, 40 lock pin, 42 upper pressure receiving member, 42a, 44a operation surface, 42b, 44b inclined surface, 44 lower pressure receiving member, 46 lock receiving member

Claims (8)

A locking device that locks the shoji with respect to the frame in a closed position,
A rotation operation unit;
A drive member that pivots with a vertical displacement when the rotation operation unit is rotated;
A lock bar that is slidable in the vertical direction and is detachable from the lock receiving member;
An upper pressure receiving member that is provided so as to protrude from one side surface of the lock bar and is pressed by the drive member that pivots upward;
With
When the rotation operation unit is rotated from the lock position to the unlock position, the upper pressure receiving member is pressed by the drive member, and the lock bar is raised to be in a non-engagement state with the lock receiving member. When the rotation operation unit is rotated from the unlock position to the lock position, the lock bar is lowered and engaged with the lock receiving member, thereby closing the shoji with respect to the frame body. That locks in position,
The upper pressure receiving member is provided along a lateral direction perpendicular to the sliding direction of the lock bar, and is pressed by the drive member when the rotation operation unit is operated from the lock position toward the unlock position. Operating surface
An inclined surface that is provided so as to be continuous from the operation surface, is inclined upward toward the tip side of the upper pressure-receiving member, and the drive member abuts in a state where the rotation operation portion is in the unlock position; A locking device comprising: The locking device according to claim 1,
A first straight line passing through an axis center of the drive member and a rotation center of the rotation operation unit in a state where the rotation operation unit is in the unlocked position and the drive member is in contact with the inclined surface is the inclined surface. When the crossing angle between the second straight line along the operation surface and the inclined surface in the case of a configuration orthogonal to the reference plane is referred to as a reference angle,
A crossing angle between the second straight line and the inclined surface is set to be equal to or less than the reference angle. The locking device according to claim 1,
The rotation operation unit is configured to rotate 90 degrees from the lock position to the unlock position, and in the lock position, the drive member is set to a position where the axis center of the drive member is turned 45 degrees downward from the lateral direction. On the other hand, in the unlocked position, the drive member is set at a position where the shaft center is turned 45 degrees upward from the lateral direction,
The crossing angle between the straight line along the operation surface and the inclined surface is set to 45 degrees or less. The locking device according to any one of claims 1 to 3,
A lower pressure receiving member that is disposed to face the upper pressure receiving member and that protrudes from one side of the lock bar, and that is pressed by the drive member that pivots downward;
The lower pressure receiving member is provided along a lateral direction orthogonal to the sliding direction of the lock bar, and is pressed by the driving member when the rotation operation unit is operated from the unlock position toward the lock position. A lower operation surface,
A lower side that is provided so as to be continuous from the lower operation surface, is inclined downward toward the distal end side of the lower pressure receiving member, and the drive member abuts in a state where the rotation operation unit is in the locked position. And an inclined surface. In the locking device according to any one of claims 1 to 4,
The locking device according to claim 1, wherein the driving member is a pin-shaped member whose outer peripheral surface is in contact with the operation surface and the inclined surface. In the locking device according to any one of claims 1 to 5,
The rotation device includes a handle provided so as to be able to protrude and retract from an outer surface of the shoji.   An opening / closing device comprising: the shoji having the locking device according to any one of claims 1 to 6; and the frame having the lock receiving member while supporting the shoji so as to be opened and closed. A joinery comprising the opening and closing device according to claim 7 and a window connected to a vertical frame of the frame,
The opening and closing device is a ventilating device that forms a ventilation passage through which the opening of the frame communicates indoors and outdoors to take in outside air when the shoji is opened.

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