TW201901012A - Locking device, opening and closing device, and door and window that allow for operation without occurrence of poor condition even when installed in a large size door or window panel - Google Patents

Abstract

The present invention provides a locking device, an opening and closing device comprising the locking device, and a door or window comprising the opening and closing device. These devices, even being installed in a door/window panel having an increased size, can be used in a condition without occurrence of poor conditions. The locking device (30) has a top-side press-taking member (42) that includes an operation face (42a), which is arranged transversely in a manner of being orthogonal to a sliding direction of a locking bar (38), such that when a grip (28) is operated to move from a locking position toward an unlocking position, the operation face is pushed and pressed by a driving pin (36); and an inclined face (42b), which is arranged to continue from the operation face (42a) and incline upward in a direction toward a front end side of the top-side press-taking member (42) such that in a condition that the grip (28) is in an unlocking position, the driving pin (36) is in abutting engagement with the inclined face.

Description

 Locking device, opening and closing device, door and window  

The invention relates to a locking device, an opening and closing device and a door and window.

For example, Patent Document 1 discloses a locking device having a flat handle for opening and closing and locking a door sash supported by a frame. The lock device rotates the handle to rotate the cam-shaped latch on the back side, thereby engaging the latch with the lock receiving member on the frame side to lock the door sash.

[Previous Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2014-105487.

Further, for example, in a door sash having a large height dimension in the vertical direction, a locking device having a structure in which a lock lever extending in the up and down direction can be moved up and down along a side surface of the door sash is sometimes used. The support is supported by the rotation of the handle to slide the lock lever in the up and down direction. In this configuration, the door sash can be locked by engaging the lock pin provided on the lock lever with the lock receiving member on the frame side.

However, in the case of using such a locking device, if the height of the door sash is large, it is necessary to increase the length of the locking lever correspondingly, resulting in an increase in the weight of the locking lever. Therefore, for example, in a state where the handle is rotated to the unlocked position and the lock lever is pushed upward to open the door sash, the lock lever may be lowered by its own weight, thereby rotating the handle in the locking direction. Thus, when the open door sash is closed, it is necessary to close the door sash after the handle in the locked position returns to the unlocked position again, which is very troublesome. Moreover, in the case where the door sash is mistakenly closed while the handle is still in the locked position, the locking pin may collide with the lock receiving member, and even damage may occur. It should be noted that such a problem is also likely to occur in a structure in which the sliding resistance between the handle and the lock lever is small irrespective of the size of the length of the lock lever.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide an available lock device capable of suppressing occurrence of an accidental operation, an opening and closing device including the lock device, and a door and window including the opening and closing device.

The present invention relates to a locking device for locking a door sash in a closed position with respect to a frame, and includes: a rotation operation portion; and a driving member that is displaced in a vertical direction when the rotation operation portion is rotated a turning operation; the lock lever is slidable in the up and down direction and is detachable from the lock receiving member; and the upper pressure receiving member is provided to be protruded upward from the one side of the lock lever When the rotating operation portion is rotated from the locked position to the unlocked position, the upper pressure receiving member is pressed by the driving member, and the locking lever is raised and is in a non-engaged state with the lock receiving member. When the rotation operation portion is rotated from the unlock position to the lock position, the lock lever is lowered and engaged with the lock receiving member, thereby locking the door sash in the closed position with respect to the frame. The upper pressure-receiving member has an operation surface which is perpendicular to a sliding direction of the lock lever Providing that when the rotary operation portion is operated from the lock position toward the unlock position, the operation surface is urged by the drive member; and the inclined surface is provided to be continuous from the operation surface toward the upper pressure member The front end side is inclined upward, and the drive member abuts against the inclined surface in a state where the rotation operation portion is placed at the unlock position.

According to such a configuration, the drive member abuts against the inclined surface of the upper pressure receiving member at the unlock position. Therefore, it is possible to prevent the occurrence of a problem that the drive member in the unlocked position unexpectedly turns downward in the lock direction due to the weight of the lock lever. Therefore, the locking device can prevent the occurrence of the above-described problem even when the weight of the lock lever is increased, for example, when the door sash having a large height is provided.

In the lock device according to the present invention, the rotation center is placed in the unlock position and the drive member is in contact with the inclined surface, and the shaft center of the drive member and the aforementioned When the first straight line of the rotation center of the rotation operation portion is orthogonal to the inclined surface, an intersection angle between the second straight line along the operation surface and the inclined surface is referred to as a reference angle, and the second straight line and the inclined surface are The angle of intersection between them is set to be less than the aforementioned reference angle. As described above, when the drive member is rotated upward from the lock position toward the unlock position, the pressing force of the drive member is reliably transmitted as a sliding force toward the upper side of the lock lever, so that the operation of the rotation operation portion can be smoothly performed.

In the lock device of the present invention, the rotation operation portion may be configured to be rotatable by 90 degrees from the lock position to the unlock position, and in the lock position, the drive member is set to be the center of the shaft. At a position rotated 45 degrees downward from the lateral direction, in the unlocking position, the drive member is set such that its axial center is rotated 45 degrees upward from the lateral direction, a straight line along the operation surface, and the aforementioned The angle of intersection between the inclined faces is set to be 45 degrees or less. As described above, when the drive member is rotated upward from the lock position toward the unlock position, the pressing force of the drive member is reliably transmitted as a sliding force toward the upper side of the lock lever, so that the operation of the rotation operation portion can be smoothly performed.

In the lock device of the present invention, the lower pressure receiving member may be configured such that the driving member is disposed to face the upper pressure receiving member and protrude from one side surface of the lock lever, and is rotated downward. Pushing, the lower pressure receiving member has a lower operation surface disposed in a lateral direction orthogonal to a sliding direction of the lock lever, and when the rotation operation portion is operated from the unlock position toward the lock position, The lower operation surface is pressed by the driving member; and the lower inclined surface is provided so as to be continuous from the lower operation surface, inclined downward toward the front end side of the lower pressure receiving member, and is rotated at the rotation operation portion The driving member is in contact with the lower inclined surface in a state where the locking position is placed. In this way, the lock lever can be rotated by, for example, 180 degrees, and the versatility can be improved.

In the lock device of the present invention, the drive member may be a pin-shaped member whose outer peripheral surface can abut against the operation surface and the inclined surface. In this way, the outer peripheral surface of the pin-shaped member can be smoothly slidably contacted with the operation surface and the inclined surface, and the lock lever can be operated. Further, even if the driving member is a pin-shaped member, the pin-shaped member comes into contact with the inclined surface of the upper pressure-receiving member at the unlocking position, and the occurrence of an unexpected operation of the lock device can be prevented.

In the lock device of the present invention, the rotation operation portion may have a handle that is provided to be able to enter and exit from the outer surface of the door sash. In this way, the locking device can smoothly perform the locking and non-locking actions with the handle. In addition, it is also possible to prevent the handle from accidentally moving from the unlocked position to the locked position.

The present invention provides an opening and closing device comprising: the door sash having a lock device having the above configuration; and the frame body configured to support the door sash so as to be openable and closable, and having the lock receiving member. According to such a configuration, it is possible to prevent the door sash from being accidentally closed in a state where the lock lever in the unlocked position is accidentally lowered to the lock position due to its weight, resulting in the lock lever or the lock pin provided thereon being in impact contact with the lock receiving member. And the situation is damaged.

The present invention provides a door and window device comprising: the opening and closing device having the above configuration; and a window connected to the vertical frame of the frame body, wherein the opening and closing device forms an opening portion and a housing of the frame body when the door sash is opened A ventilator that communicates inside and outside to introduce outside air into the ventilation passage in the house. According to such a configuration, by providing the lock device in a ventilating device that is configured to be longer than a sash that is used in a normal window or the like, it is possible to reliably prevent accidental movement of the drive member and the rotary operation portion. occur.

According to the present invention, it is possible to prevent the occurrence of a malfunction of the accidental operation of the lock device.

10‧‧‧Opening and closing device

12‧‧‧ doors and windows

14‧‧‧ window

16‧‧‧Window frame

16a‧‧‧Upper window frame

16b‧‧‧low window frame

16c, 16d‧‧‧ vertical window frame

18‧‧‧Window glass

20‧‧‧ frame

20a‧‧‧上框

20b‧‧‧ lower box

20c, 20d‧‧‧ vertical frame

20e, 24a‧‧‧ deep into the surface

22‧‧‧ Openings

24‧‧‧ inner door sash

25‧‧‧Outdoor door sash

28‧‧‧handle

28a‧‧‧Rotary shaft members

30‧‧‧Locking device

32‧‧‧Handle base

32a‧‧‧ Main body

32b‧‧‧Flange

32c‧‧‧ Storage recess

32d‧‧‧Operating space

34‧‧‧Rotating body

36‧‧‧Drives

38‧‧‧Lock lever

38a, 38b‧‧‧ side

40‧‧‧Lock pin

42‧‧‧Upper compression member

42a, 44a‧‧‧Operation surface

42b, 44b‧‧‧ sloped surface

44‧‧‧Under pressure member

46‧‧‧Lock housing member

46a‧‧‧Installation board

46b‧‧‧Locking plate

48‧‧‧support plate

H‧‧‧ displacement

L1, L2‧‧‧ straight line

X, Y, Z‧‧‧ arrows

O1‧‧‧ Rotation Center

O2‧‧‧Axis Center

θ‧‧‧Corrugated angle

‧‧‧‧ angle

Fig. 1 is an elevational view of a door and window provided with an opening and closing device according to an embodiment of the present invention as seen from the outside of the house.

Fig. 2 is an elevational view of the door and window of Fig. 1 as seen from the inside of the house.

Figure 3 is a top plan view of the handle and its peripheral members.

Fig. 4 is a front elevational view of the handle and its peripheral members of Fig. 3 as seen from the inside of the house.

Figure 5 is a structural view of the locking device as seen from the back side of the handle, wherein (A) in Figure 5 is a view showing a state in which the handle is in a locked position, and (B) in Figure 5 is a view showing that the handle is in an unlocked position. A diagram of the state.

Fig. 6 is a view showing an operation state of the lock device, wherein (A) in Fig. 6 is a view showing a locked state in which the lock pin is engaged with the lock receiving member, and (B) in Fig. 6 is a view showing the lock pin and the lock. FIG. 6(C) is a view showing a state in which the pin is driven when the handle is in the locked position, and (D) in FIG. 6 is a view showing that the handle is in the unlocked position, and FIG. 6(C) is a view showing a state in which the engagement of the accommodating member is released. A diagram of the state of the drive pin.

Fig. 7 is an operation diagram showing a state in which the lock device is operated from the locked state to the unlocked state, wherein (A) in Fig. 7 is a view showing a lock position, and (B) in Fig. 7 is a view showing the handle from Fig. 7. A diagram showing a state in which the state shown in (A) is rotated in the unlocking direction, and (C) in FIG. 7 is a state in which the handle is further rotated in the unlocking direction from the state shown in (B) of FIG. 7 . Fig. 7(D) is a view showing an unlocked position.

Fig. 8 is an enlarged view of a main portion of the lock device in the unlocked state shown in (D) of Fig. 7.

Fig. 1 is an elevational view of a door and window 12 including an opening and closing device 10 according to an embodiment of the present invention as seen from the outside of a house. Fig. 2 is an elevational view of the door and window 12 of Fig. 1 as seen from the inside of the house. The opening and closing device 10 of the present embodiment is an opening provided in the outer wall of the building as the door and window 12 connected to the window 14, and is a ventilating device for introducing air outside the house to ventilate the inside of the house.

As shown in FIGS. 1 and 2, the window 14 is a fixed window, and includes a window frame 16 and a window glass 18 fixed to the opening of the window frame 16. The window frame 16 is a four-frame structure in which the upper sash 16a, the lower sash 16b, and the left and right vertical sashes 16c and 16d are assembled. Each of the sashes (16a to 16d) is, for example, an extruded material of a metal such as aluminum or a resin such as polyvinyl chloride resin (PVC).

In the present embodiment, the door and window 12 having a structure in which the window 14 as a fixed window and the opening and closing device 10 are coupled is exemplified. In addition to the fixed window, the door and window 12 may be configured such that a sliding window such as a double-slot sliding window or a rotating window such as a hinge window or an upper sliding window is connected to the opening and closing device 10 . The door and window 12 may also be configured such that the opening and closing device 10 is not coupled to the window 14, and is separately provided, for example, with the outer wall of the building interposed therebetween. The opening and closing device 10 can also be provided separately.

As shown in FIGS. 1 and 2, the opening and closing device 10 includes a housing 20 and an inner door sash 24 and an outer door sash 25 that open and close the opening 22 of the housing 20. The opening and closing device 10 is, for example, a ventilation device that includes a ventilation path between the inner door sash 24 and the outer door sash 25.

The casing 20 is a four-frame structure in which the upper frame 20a, the lower frame 20b, and the left and right vertical frames 20c and 20d are assembled. Each of the frames (20a to 20d) is, for example, an extruded material of a metal such as aluminum or a resin such as polyvinyl chloride resin (PVC). One vertical frame 20c of the opening and closing device 10 is coupled and fixed to one vertical window frame 16c of the window 14 to constitute the door and window 12.

In the present invention, the depth direction refers to the inside and outside direction of the door and window 12, that is, the direction from the inside of the house toward the outside of the house or the opposite direction (the direction indicated by the arrow Z in the figure), and the depth of the face refers to the face extending in the depth direction. . The front view direction is a direction orthogonal to the depth direction, and when the vertical frames 20c and 20d are elongated in the up and down direction, the vertical frame 20c and 20d are orthogonal to the longitudinal direction (the direction indicated by the arrow X in the figure). In the case of the upper frame 20a and the lower frame 20b which are elongated in the left-right direction, it means the up-and-down direction orthogonal to the longitudinal direction (direction shown by the arrow Y in the figure). The main viewing surface refers to the surface along the main viewing direction. In other words, in each of the drawings, the direction indicated by the arrow X is the left-right direction of the door and window 12, the direction indicated by the arrow Y is the vertical direction of the door and window 12, and the direction indicated by the arrow Z is the depth direction of the door and window 12. Further, the inner side (inner circumference) of the frame-shaped member means, for example, an in-frame portion in which the opening portion 22 of the frame body 20 is provided. The outer side (outer circumference) of the frame-shaped member means, for example, an outer frame portion of the building main body fixed to the frame body 20.

As shown in FIG. 2, a handle 28 for opening and closing operation is provided on the inner side surface of the inner door sash 24. The handle 28 is a rotation operation portion of the lock device 30 (see (A) in FIG. 5) for locking or unlocking the inner door sash 24 with respect to the casing 20. The outer door sash 25 can also be omitted. Locking device 30 (handle 28) may also be provided to outer door sash 25.

Hereinafter, a configuration example of the handle 28 of the lock device 30 will be described. Figure 3 is a top plan view of the handle 28 and its peripheral members. Fig. 4 is a front elevational view of the handle 28 and its peripheral members of Fig. 3 as seen from the inside of the house. In the following description, the state in which the lock device 30 is attached to the inner door sash 24 as shown in FIG. 2 will be described.

As shown in FIGS. 3 and 4, the handle 28 is a strip-shaped plate formed in an arc shape on one end side. The handle 28 is supported for rotation relative to the handle base 32.

The handle base 32 has a block shape in which both ends are formed in an arc shape, and has a main body portion 32a, a flange portion 32b, and a housing recess portion 32c. The main body portion 32a is an elliptical cylindrical portion extending in the inner and outer directions. The flange portion 32b is a portion in which the inner side edge portion of the main body portion 32a is extended and extended. The housing recess 32c is a shallow recess which is provided on the surface of the flange portion 32b and can accommodate the handle 28 provided inside the house.

The handle 28 is disposed on the side of the housing recess 32c of the handle base 32. The handle 28 has a rotating shaft member 28a projecting from the back surface on the one end side formed in an arc shape. The rotating shaft member 28a is passed through the housing recess 32c to the main body portion 32a in the Z direction, and is supported to be rotatable relative to the handle base 32. Further, the handle 28 is coupled so as to be swingable toward the inside of the housing with respect to the rotating shaft member 28a (refer to the handle 28 shown by the two-dot chain line in Fig. 3). The rotating shaft member 28a has a rotating body 34 fixed to a front end portion thereof that protrudes from the main body portion 32a. The rotating body 34 is, for example, a fan-shaped plate (refer to (A) of FIG. 5). The rotary body 34 is provided with a drive pin (drive member) 36 which has a cylindrical shape having a shaft center which is eccentric from the rotary 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 present embodiment, the handle 28 is configured to be rotatable by 90 degrees from the locked position shown by the solid line in Fig. 4 to the unlocked position shown by the two-dot chain line. The drive pin 36 rotates with the rotary shaft member 28a as a center of rotation in accordance with the rotation operation of the handle 28. The drive member that is rotated by the handle 28 may be, for example, a plate-like member or a prismatic member, in addition to the pin-shaped member, that is, the drive pin 36.

The handle 28 is at a locked position shown by a solid line in FIG. 4 and can be housed in the housing recess 32c of the handle base 32. The housing recess 32c has a shape such that an operation space 32d is formed on the other end side of the stored handle 28 on the side opposite to the side of the rotating shaft member 28a. With respect to the handle 28 in the locked position, it can be pulled closer to the front side by the fingertip with the operating space 32d (refer to the handle 28 shown by the two-dot chain line in Fig. 3). When the handle 28 is rotated, the handle 28 pulled out from the housing recess 32c may be pressed downward with the rotating shaft member 28a as a center of rotation.

Hereinafter, a configuration example of the lock device 30 will be described. 5 is a structural view of the lock device 30 as viewed from the back side of the handle 28, wherein (A) in FIG. 5 is a view showing a state in which the handle 28 is in a lock position, and (B) in FIG. 5 is a view showing that the handle 28 is at A diagram of the state of an unlocked position. 6 is a view showing an operation state of the lock device 30, wherein (A) in FIG. 6 is a view showing a locked state in which the lock pin 40 is engaged with the lock receiving member 46, and (B) in FIG. 6 is a lock. FIG. 6(C) is a view showing a state in which the pin 28 is driven when the handle 28 is in the locked position, and FIG. 6(D) is a view showing an unlocked state in which the engagement of the pin 40 with the lock receiving member 46 is released. It is a view showing the state of the drive pin 36 when the handle 28 is in the unlock position.

As shown in (A) of FIG. 5 (D) of FIG. 6, the lock device 30 is provided with the handle 28 and the drive pin 36, the lock lever 38, the lock pin 40, the upper side pressure-receiving member 42, and the lower side pressure-receiving member 44. .

The handle 28 is a structure that can be rotated by 90 degrees as described above. As shown in (C) of FIG. 6, when the handle 28 is in the lock position, the drive pin 36 is at a position rotated 45 degrees downward from the horizontal direction (X direction). As shown in (D) of FIG. 6, when the handle 28 is in the unlocked position, the drive pin 36 is rotated 45 degrees upward from the horizontal direction (X direction). In other words, when the handle 28 is in the lock position, the straight line L1 passing through the rotation center O1 of the rotation shaft member 28a and the shaft center O2 of the drive pin 36 is set to be inclined downward by 45 degrees from the straight line L2 in the horizontal direction. Further, when the handle 28 is in the unlock position, the straight line L1 is set to be inclined upward by 45 degrees from the straight line L2 in the horizontal direction. The drive pin 36 is rotated 45 degrees upward and downward from the horizontal straight line L2 as described above. By the configuration of the handle 28 that can perform the 90-degree rotation operation, the displacement amount of the drive pin 36 in the vertical direction can be ensured to be the largest, and the displacement amount H of the lock lever 38 (the lock pin 40) is also maximized (refer to the figure). 5).

The lock lever 38 is a rod-shaped member that extends in the up and down direction. The lock lever 38 is supported to be slidable in the vertical direction with respect to the front surface side of the inner door sash 24, that is, the depth surface 24a (see FIG. 2). With respect to the lock lever 38, if the height dimension of the inner door sash 24 as the installation target is increased, the length dimension thereof is also set to be large.

The locking pin 40 is a cylindrical pin. The lock pin 40 protrudes from the side surface 38a of the lock lever 38 that faces the one vertical frame 20c of the casing 20. The lock pins 40 are respectively provided, for example, near the upper end portion and the lower end portion of the lock lever 38, respectively. The number of the lock pins 40 to be provided can be appropriately changed according to the length dimension of the lock lever 38 or the like. The lock lever 38 is accommodated, for example, in a bag-like recessed portion that is vertically movable, and is formed in the up-and-down direction 24a of the inner door sash 24 and extends in the up-and-down direction. Each of the lock pins 40 protrudes from the opening of the pocket-shaped recess toward the vertical frame 20c. In a state where the inner door sash 24 is in the closed position, the lock pin 40 can be engaged with the lock receiving member 46 on the side of the vertical frame 20c.

The lock housing member 46 is fixed to a depth surface 20e (see FIG. 2) of the vertical frame 20c that faces the depth surface 24a of the inner door sash 24. The lock housing member 46 has a lock plate 46b which is formed to be bent in the orthogonal direction from the attachment plate 46a attached to the depth surface 20e (refer to (A) of FIG. 6). The lock plate 46b 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 a lateral direction (X direction) that intersects the vertical direction from a side surface (one side surface) 38b of the lock lever 38 opposite to the lock pin 40. The lower pressure receiving member 44 is a protruding piece that is disposed opposite to 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 forks in a symmetrical structure. The upper pressure receiving member 42 and the lower pressure receiving member 44 are provided between the upper and lower locking pins 40 and 40 at substantially the center in the longitudinal direction of the lock lever 38. In the present embodiment, the upper pressure receiving member 42 and the lower pressure receiving member 44 are protruded from the support plate 48 attached to the side surface 38a of the lock lever 38, and the lock lever 38 is passed through in the X direction to protrude from the side surface 38b.

The upper pressure receiving member 42 is a member that is pressed upward by a driving pin 36 that rotates in the locking direction. The upper pressure receiving member 42 has an operation surface 42a and an inclined surface 42b. The operation surface 42a is a lower surface of the upper pressure receiving member 42, and is a surface in the lateral direction (X direction) orthogonal to the sliding direction (Y direction) of the lock lever 38. The inclined surface 42b is a surface that is provided so as to be continuous upward from the operation surface 42a and inclined upward toward the front end side of the upper pressure receiving member 42.

The lower pressure receiving member 44 is a protruding piece that protrudes in a lateral direction (X direction) that intersects the vertical direction from a side surface (one side surface) 38b of the lock lever 38 opposite to the lock pin 40. The lower pressure receiving member 44 is a member that is pressed downward by the drive pin 36 that rotates in the unlocking direction. The lower pressure receiving member 44 has an operation surface (lower side operation surface) 44a and an inclined surface (lower side inclined surface) 44b. The operation surface 44a is an upper surface of the lower pressure receiving member 44, and is a surface in the lateral direction (X direction) orthogonal to the sliding direction (Y direction) of the lock lever 38. The inclined surface 44b is a surface that is provided to be continuous downward from the operation surface 44a and inclined downward toward the front end side of the lower pressure receiving member 44. The lower pressure receiving member 44 has a gap into which the driving pin 36 can be inserted between the operation surface 44a and the operation surface 42a 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 operation of the driving pin 36 into the vertical movement of the lock lever 38 with a minimum loss. The inclined faces 42b and 44b may be formed of curved surfaces.

Hereinafter, an operation example of the lock 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.

With the locking device 30, in the locked state in which the handle 28 is in the locked position shown in (C) of Fig. 6, the lock lever 38 is slid to as shown in (A) of Fig. 5 and (A) of Fig. 6 At the lowermost position, the lock pin 40 is engaged with the lock plate 46b of the lock housing member 46. In this state, the drive pin 36 is in a position abutting on the inclined surface 44b of the lower pressure receiving member 44 as shown in FIG. 7(A).

In the lock device 30, when the handle 28 is rotated from the lock position toward the unlock position, the drive pin 36 is rotated upward by the rotation shaft member 28a as a center of rotation. Thus, the drive pin 36 abuts against the upper pressure receiving member 42. In the present embodiment, first, as shown in FIG. 7(B), the drive pin 36 abuts on a corner portion located at the boundary between the operation surface 42a and the inclined surface 42b or in the vicinity of the corner portion.

When the handle 28 is further rotated from the state shown in (B) of Fig. 7 toward the unlocked position, the drive pin 36 is urged against the operation surface 42a as shown in (C) of Fig. 7 to push it upward. Therefore, the lock lever 38 slides upward relative to the inner door sash 24, and the lock pin 40 also moves upward.

If the handle 28 is finally rotated by the 90 degree to the unlocked position, the lock lever 38 is in the position of being slid to the uppermost position as shown in (B) of FIG. 5 and (B) of FIG. 6, the lock pin 40 and the lock The engagement state of the lock plate 46b of the housing member 46 is released. That is to say, the locking device 30 is in an unlocked state. In this state, the drive pin 36 is in a position abutting on the inclined surface 42b of the upper pressure receiving member 42 as shown in FIG. 7(D). By pulling the handle 28 from the state to the front side, the inner door sash 24 can be opened to the inside of the house, and the outer door sash 25 can be opened to the outside of the room in conjunction with the door sash 24. As a result, in the opening and closing device 10, the opening portion 22 of the casing 20 is communicated with the inside and outside of the room to introduce outside air into the ventilation passage in the house.

Fig. 8 is an enlarged view of a main portion of the lock device 30 in the unlocked state shown in Fig. 7(D).

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

For this reason, first, in the lock device 30, for example, a configuration in which the angle of intersection θ is set to a reference angle of 45 degrees is considered.

In this configuration, the total weight of the lock levers 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. Thus, the force applied by the load P in the direction of rotation (locking direction) of the drive pin 36 is P × cos 90 ° = 0. Therefore, the lock device 30 can prevent the load P from the lock lever 38 rising to the unlocking direction from rotating the drive pin 36 in the unlocking direction.

Thereby, it is possible to prevent the handle 28 from being accidentally rotated to the locked position due to the load P, for example, in a state where the inner door sash 24 is in the open position. As a result, the handle 28 is always maintained in the unlocked position when the inner door sash 24 is in the open position, so that when the inner door sash 24 is closed, there is no need to rotate the handle 28 again to directly close the inner Door and window fan 24. Further, the following problem does not occur: the handle 28 is unexpectedly rotated to the locked position in the state where the inner door sash 24 is in the open position, and the lock pin 40 is in collision with the lock receiving member 46 when the inner door sash 24 is closed. Then it is damaged.

However, when the intersection angle θ is set to the reference angle of 45 degrees, when the lock device 30 is operated from the lock position to the unlock position, there is a possibility that the drive is driven as shown in (B) of FIG. 7 . After the pin 36 abuts against the inclined surface 42b, the force of the driving pin 36 is not smoothly switched to the rising direction of the upper pressure receiving member 42, and the operating force of the handle 28 is excessively required.

For this reason, the optimum angle of the intersection angle θ between the straight line L2 and the inclined surface 42b will be described below.

With respect to the intersection angle θ, it is desirable to be able to prevent the rotation of the handle 28 due to the load P based on the weight of the lock lever 38, and to smoothly perform the rotation operation of the handle 28 in the unlocking direction.

For example, the load P based on the lock lever 38 having a total length of 2400 mm is 3.6 (N), the rotational resistance f when the drive pin 36 is rotated is 0.9 (N), and the rotational force (swing moment) F1 of the drive pin 36 is 103.4 (N). In the case, the optimum value of the intersection angle θ can be calculated as follows. It should be noted that, for the turning force F1, for example, the rotational operating force F2 of the handle 28 (for example, 30 (N)), the distance R from the operating position of the handle 28 to the rotating shaft member 28a, and the rotation from the rotating shaft member 28a. The distance r from the center O1 to the axial center O2 of the drive pin 36 gives F1 = (F2 x R) / r.

First, the angle of intersection θ at which the handle 28 does not rotate due to the load P is as shown in the following Equation A.

f-Pcos(45°+θ)>0 (Formula A)

Next, the angle θ at which the handle 28 can be pushed up by the rotational operation force R2 (= 30 (N)) is as shown in the following formula B.

Flcos(45°+θ)-P>0 (Formula B)

From this, the intersection angle θ can be calculated to be 32° < θ < 42°.

For this reason, the optimum angle of the intersection angle θ may be set to a range of 32 degrees to 42 degrees as described above, and may be set to, for example, 35 degrees or 40 degrees in consideration of the crossing of members or the like. Thus, the locking device 30 can prevent the locking lever 38 from accidentally moving from the unlocked position to the locked position due to its weight, and smoothly operate the handle 28 from the unlocked position to the locked position. In addition, as long as the rotational operation force F2 of the handle 28 can be larger than 30 (N) exemplified above, for example, the intersection angle θ can be set to 45 degrees which is a reference angle. Thus, in the locking device 30, the angle of intersection θ can be set to be 45 degrees or less, preferably 32 degrees to 42 degrees. In the case where the reference angle is set to an angle other than 45 degrees, the lock device 30 can smoothly perform the handle 28 from the unlock position to the lock by setting the angle of intersection θ to be equal to or less than the reference angle. Location operation.

In particular, the ventilating device such as the opening and closing device 10 of the present embodiment is often configured to have a long longitudinal direction and a short lateral direction. Therefore, with respect to the handle 28, the length dimension thereof cannot be sufficiently ensured, and the rotational operation force thereof is also limited. However, with the handle 28, a smooth operation from the locked position to the unlocked position can be performed by the locking device 30, and an unexpected action from the unlocked position to the locked position can be prevented.

In the lock device 30, as shown in (A) and the like in FIG. 5, the upper pressure receiving member 42 and the lower pressure receiving member 44 are vertically symmetric. With this configuration, for example, the opening direction of the inner door sash 24 as the installation target is reversed and the upper pressure receiving member 42 and the lower pressure receiving member 44 are reversed from the direction in which the lock lever 38 protrudes, and the lock can be directly utilized. Device 30. In other words, when the lock lever 38 is rotated by 180 degrees, for example, the lower pressure receiving member 44 is disposed on the upper surface and the upper pressure receiving member 42 is disposed on the lower surface, the lock lever 38 can be configured to have the same structure as that shown in FIG. 5(A) and the like. The role of versatility. The lower pressure receiving member 44 may have a structure without the inclined surface 44b. Further, the lower side pressure receiving member 44 may be omitted, for example, when the handle 28 is operated in the locking direction, the lock lever 38 is lowered by its own weight or the force of a spring or the like.

As described above, the lock device 30 has an inclined surface 42b on the upper pressure receiving member 42, and the inclined surface 42b abuts against the drive pin 36 in a state where the handle 28 is placed in the unlocked position. Therefore, even if the height of the inner door sash 24 is large, for example, the weight of the lock lever 38 is increased, it is possible to prevent the drive pin 36 (handle 28) in the unlocked position from being unexpectedly due to the weight of the lock lever 38. The occurrence of a problem of turning to the lower side as the locking direction occurs. In particular, the opening and closing device 10 of the present embodiment is a ventilation device, and is often configured to be longer in the longitudinal direction than a door sash for a normal window or the like. Therefore, the weight of the lock lever 38 tends to increase in the ventilator. However, by applying the lock device 30 having the above configuration, it is possible to prevent the occurrence of accidental movement of the drive pin 36 and the handle 28.

It is to be understood that the present invention is not limited to the above-described embodiments, and can be freely changed without departing from the spirit and scope of the invention.

Although the lock device 30 has been exemplified as the opening and closing device 10 as the ventilator, the opening and closing device 10 to which the lock device 30 is applied may be a front door lock such as a hinged window, a double-slot sash window, or a sliding door.

In the above-described lock device 30, the drive pin 36 is rotated by the handle 28, but the drive lever 36 may be rotated by, for example, a lock key as a rotary operation portion, with the handle 28 omitted. .

In the above-described locking device 30, the lock pin 40 provided on the lock lever 38 is detached from the lock receiving member 46, but the lock receiving member 46 may be constituted by a pin and provided on the lock lever 38. There is a structure such as a hook that is disengaged from a pin that is the lock housing member 46.

Claims (8)

 A locking device that locks a door sash with respect to a frame at a closed position, and includes: a rotation operation portion; and a drive member that rotates in a vertical direction with a displacement when the rotation operation portion is rotated; The lock lever is slidable in the up-and-down direction and is detachable from the lock receiving member; and the upper pressure-receiving member is provided to protrude from one side of the lock lever and is urged by the drive member that rotates upward When the rotation operation portion is rotated from the lock position to the unlock position, the upper pressure receiving member is pressed by the driving member, and the lock lever is raised and becomes non-engaged with the lock receiving member, and when the rotation is performed When the operation portion is rotated from the unlock position to the lock position, the lock lever is lowered and engaged with the lock receiving member, thereby locking the door sash in the closed position with respect to the frame; the upper side The pressure receiving member has an operation surface which is disposed in a lateral direction orthogonal to a sliding direction of the lock lever, When the rotation operation portion is operated from the lock position toward the unlock position, the operation surface is pressed by the drive member; and the inclined surface is provided to be continuous from the operation surface toward the front end side of the upper pressure receiving member. The square is inclined, and the driving member abuts against the inclined surface in a state where the rotating operation portion is placed at the unlocking position.    The lock device according to claim 1, wherein the rotation center is placed in an unlocking position and the driving member is in contact with the inclined surface, and is configured to pass through the shaft center of the driving member and the rotating operation. When the first straight line of the rotation center of the portion is orthogonal to the inclined surface, an intersection angle between the second straight line along the operation surface and the inclined surface is referred to as a reference angle, and between the second straight line and the inclined surface The angle of intersection is set to be less than the aforementioned reference angle.    The locking device according to claim 1, wherein the rotary operation portion is configured to be rotatable by 90 degrees from the lock position to the unlock position, and in the lock position, the drive member is set to have its axial center at a lateral direction from the aforementioned Rotating downward at a position of 45 degrees, and in the unlocking position, the driving member is set at a position where the axial center thereof is rotated 45 degrees upward from the lateral direction; the angle between the straight line along the operating surface and the inclined surface It is set to 45 degrees or less.    The lock device according to any one of claims 1 to 3, further comprising: a lower pressure receiving member that is disposed to face the upper pressure receiving member and protrudes from one side surface of the lock lever, and is oriented The lower driving member is pressed downward; the lower pressing member has a lower operating surface disposed in a lateral direction orthogonal to a sliding direction of the lock lever, and the rotating operation portion is oriented from the unlocked position When the lock position is operated, the lower operation surface is pressed by the drive member; and the lower inclined surface is provided to be continuous from the lower operation surface, and inclined downward toward the front end side of the lower pressure receiving member, and The drive member abuts against the lower inclined surface in a state where the rotation operation portion is placed at the lock position.    The lock device according to any one of claims 1 to 4, wherein the drive member is a pin-shaped member having an outer peripheral surface that can abut against the operation surface and the inclined surface.    The locking device according to any one of claims 1 to 5, wherein the rotary operation portion has a handle that is provided to be able to enter and exit from an outer surface of the door sash.    An opening and closing device comprising: the door sash having the locking device according to any one of claims 1 to 6; and the frame, wherein the door sash is detachably supported and has the lock Containing components.    A door and window device comprising: the opening and closing device according to claim 7; and a window connected to the vertical frame of the frame body; wherein the opening and closing device is configured to form an opening portion of the frame body when the door sash is opened A ventilator that communicates inside and outside the house to introduce outside air into the ventilation passage in the house.