JP4632259B2 - Latch device and joinery including the latch device - Google Patents

Description

  The present invention relates to a latch device that is used to lock a building concrete in a fitting such as a casement window to a fitting frame, and a fitting including the latch device.

As a joinery, there is known an open window in which a shoji is attached to a window frame so as to be freely opened and closed, such as an interior fall window and an outside fall window.
In such an opening window, a latch device is attached to a shoji, and the shoji is closed and locked by the latch device.
As the aforementioned latch device, the one disclosed in Patent Document 1 is known.
The latch device is provided with a latch movably between a locking position and an unlocking position along the outer casing and the cover plate, and the latch is urged and held toward the locking position by a spring. Can be moved to the unlocked position against the spring by external force and operating rod.
In the latch device described above, when the outer casing is attached to the shoji and the shoji is moved in the direction toward the closing position, the latch contacts the latching portion of the window frame and moves to the unlocking position against the spring. When the shoji is in the closed position, the latch goes over the locking part of the window frame and is locked by the spring, and the latch locks to the latching part of the window frame to lock the shoji. Then, by moving to the unlocking position, the shoji can be unlocked and opened.

Japanese Utility Model Publication No. 58-29238

  The above-described latch device moves in conjunction with the direction in which the latch and the operating rod move toward the locking position and the direction toward the unlocking position. That is, when the latch moves in the direction toward the locking position, the operation rod moves in the direction toward the locking position, and when the latch moves in the direction toward the unlocking position, the operation rod also moves in the direction toward the unlocking position. When the operating rod moves in the direction toward the locking position, the latch also moves in the direction toward the locking position, and when the operating rod moves in the direction toward the unlocking position, the latch also moves in the direction toward the unlocking position.

Because of this, when the latch at the locking position moves toward the unlocking position, the operating rod also moves toward the unlocking position at the same time, so that the operating rod does not move in contact with the outer casing and lid. In the state where it is supported, the latch at the lock position cannot be moved to the unlock position.
Therefore, when the operating rod is in contact with the outer casing and the lid, and the shoji is closed with the operating rod, the operating rod does not move in the direction toward the unlocking position, so the latch moves in the direction toward the unlocking position. Since it cannot move and remains in the locked position when its latch contacts the locking part of the window frame, it may not be possible to close the shoji.

For example, in a case of an opening window attached to a high place such as a smoke exhaust window, a shoji may be opened and closed by operating an operating rod of a latch device using an operating rod such as a long rod.
Specifically, in order to close the open window, the operating rod of the latch device attached to the shoji is pushed with the operating rod to contact the outer casing and the lid, and the shoji together with the outer casing and the lid is directed to the closed position. In this way, the operating rod of the latch device cannot be moved toward the unlocking position by the operating rod, so even if the latch is pressed against the locking part of the window frame, it will be in the unlocking position. The latch cannot be moved to the closed position because the latch remains pressed against the locking portion of the window frame. It cannot be used to operate the latch of the latch device to close the shoji.

  The object of the present invention is to enable the latch of the locking position to be moved to the unlocking position by an external force with the operation rod supported so as not to move in contact with the case, so that the construction can be smoothly closed by the operation rod. And a fitting using the latch device.

The latch device according to the present invention includes a case attached to a specific construction of a joinery , a latch provided on the case so as to be movable between a locked position and an unlocked position, and an elastic force that holds the latch in a locked position. A member and an operating rod attached to the case so as to be swingable in the latch releasing direction and the latch locking direction along the latch moving direction;
The case has a latch support portion and an operation rod insertion portion,
The latch includes a latch portion, an operation rod insertion portion, and an operation rod contact portion, and the latch support portion of the case includes a locking position where the latch portion engages with a concrete-specific engagement portion of the joinery, and the latch The latch part is supported movably across the unlocking position away from the locking part,
The operating rod has an arm portion and an operating portion, and the arm portion passes through the operating rod insertion portion of the case and the operating rod insertion portion of the latch into the case in the latch unlocking direction and the latch locking direction. Mounted so that it can swing freely, the operation part protrudes from the case,
When the latch is in the locked position, the portion closer to the operation portion than the attachment portion of the arm portion is in contact with the operation rod contact portion of the latch, and the operation rod is held at the first position.
When the operating rod is in the second position swinging in the latch unlocking direction from the first position, the operating rod contact portion is pushed closer to the operating portion than the mounting portion of the arm portion, so that the latch resists the elastic member. Move to the unlocked position,
When the operating rod is in the third position where the arm portion is in contact with the case and supported so as not to swing in the latch locking direction, the distance between the arm portion and the lower surface of the latch portion is from the locking position of the latch. It is wider than the moving distance to the unlocking position, and the locking position latch can move to the unlocking position,
The operating rod contact portion of the latch has an arc shape, and when the operating rod is swung from the first position to the second position, a portion closer to the operating portion than the mounting portion of the arm portion of the operating rod and the operating rod The latch device is characterized in that the position in contact with the contact portion is sequentially moved in the longitudinal direction of the arm portion.

The joinery provided with the latch device of the present invention is attached to the joinery frame so as to be openable and closable.
When the latch of the latch device is in the locking position, the latch is locked to the locking portion of the joinery frame to lock the building details.

According to the latch device of the present invention, the latch at the locking position can be moved to the unlocking position by an external force in a state where the operating rod is supported so as not to swing in the latch locking direction at the third position in contact with the case.
Therefore, by attaching the case of the latch device to the construction material of the joinery, and closing the construction material with the operating rod of the latch device as the third position, the latch portion of the latch is pressed against the locking portion of the joinery frame. Since the latch is moved to the unlocked position when an external force is applied, the fitting can be smoothly closed with the operation rod.
Further, the latch can be smoothly moved to the locked position and the unlocked position along the latch support portion of the case.
Further, by setting the operating rod to the second position, the portion closer to the operating portion than the mounting portion of the arm portion comes into contact with the operating rod contact portion, and the latch is moved to the unlocked position.
Further, even if the latch is moved to the unlocked position when the operating rod is in the third position, the lower surface of the latch portion does not come into contact with the arm portion of the operating rod so that the operating rod does not move in the third position. The latch can be moved to the unlocked position while being supported.
Further, when the operating rod is swung from the first position to the second position and the latch at the locking position is moved to the unlocking position, the operation portion closer to the operating portion and the latch are operated than the mounting portion of the arm portion of the operating rod. Since the position in contact with the heel contact portion sequentially moves in the longitudinal direction of the arm portion, the load does not act concentrated on one point, so the portion where the arm portion and the operation heel contact portion contact may be abnormally worn. Absent.

  According to the joinery provided with the latch device of the present invention, the operation rod is pushed to the third position by the operation rod or the like, and further, the building concrete is closed by the operation rod, so that the construction concrete can be obtained through the operation rod and the case. By moving toward the closed position and pressing the latch against the locking part of the joinery frame, the latch moves to the unlocked position against the elastic member. It can be closed smoothly.

As shown in FIG. 1, a building concrete 2 is attached to a fitting frame 1 so as to be freely opened and closed.
A latch device 3 for locking the building concrete 2 in the closed state is attached to the building concrete 2.
In the embodiment shown in FIG. 1, the joinery frame 1 is a window frame in which an upper frame 10, a lower frame 11, and left and right vertical frames 12 are connected in a square shape.
The construction concrete 2 is a shoji which has an upper fence 20, a lower fence 21, and left and right vertical fences 22 connected in a square shape and a panel 23 made of glass or the like mounted therein.
The lower frame 11 and the lower collar 21 serve as an inward window in which the hinge 4 is pivotably connected in the indoor direction.
The latch device 3 is attached to the indoor side surface 20a of the upper collar 20. The latch device 3 can be freely engaged with and disengaged from a locking portion of the upper frame 10, for example, a receiving metal 13.

As shown in FIG. 2, the latch device 3 includes a case 30, a latch 40, an operating rod 50, and an elastic member 60.
The latch 40 is provided on the case 30 so as to be movable between a locked position shown in FIG. 2 and an unlocked position shown in FIG. 3, and the latch 40 is a receiving metal fitting as shown in FIG. It is urged and held toward the locking position where it is locked to 13.
The operating rod 50 is attached to the case 30 so as to be swingable in the moving direction of the latch 40. As shown in FIG. 2, the operating rod 50 is held in the first position when the latch 40 is in the locked position. When the operating rod 50 at the first position is swung in the latch unlocking direction to the second position shown in FIG. 3, the latch 40 is unlocked from the receiving member 13 against the elastic member 60. Move to.

  In the state shown in FIG. 2, the operating rod 50 is in the third position in contact with the case 30. When the operating rod 50 is supported so that it does not move at the third position, the latch 40 is pushed by an external force, so that the latch 40 is separated from the receiving metal 13 as shown in FIG. Move to the unlocking position.

Thus, in a state where the operating rod 50 is supported so as not to move at the third position, the latch 40 at the locking position can be smoothly moved to the unlocked position by an external force. It can be closed smoothly.
For example, in the case of the inward window shown in FIG. 1, the shoji (construction concrete 2) opened as shown by the phantom line is latched with the operating rod 5 such as a rod and the operating rod 50 of the latch device 3 is latched in the locking direction (arrow When the closing operation is performed by pushing to a), the operation rod 50 is supported so as not to move at the third position in contact with the case 30, and the shoji is rotated in the closing direction through the operation rod 50 and the case 30, as shown in FIG. As described above, the latch 40 is pressed against the receiving metal 13 fixed to the upper frame 10.
When the shoji is further rotated in this direction from this state, an external force is applied to the latch 40, and the latch 40 moves toward the unlocked position against the elastic member 60.
Then, when the latch 40 exceeds the receiving metal 13, the latch 40 is moved to the locking position by the elastic member 60 as shown in FIG. 2, so that the shoji (construction concrete 2) is moved to the window frame (construction concrete 2) as shown by the solid line in FIG. Lock the joinery frame 1).

To release the shoji from the state shown by the solid line in FIG. 1, pull the operating rod 50 downward (arrow b) with the operating rod 5, and the latch 40 is opened as shown in FIG. Move to the lock position.
As a result, the latch 40 is detached from the metal fitting 13 and is unlocked, so that the shoji is tilted indoors and opened as indicated by a virtual line.

Next, specific shapes of the members of the latch device will be described.
The case 30 has an outer case 31 and an inner case 32 having a latch support portion 33. The latch support portion 33 is open on both sides in the locking / unlocking direction and is one surface in a direction perpendicular to the locking / unlocking direction. In addition, an operating rod insertion portion 34 is provided.
As shown in FIG. 6, the out-case 31 is U-shaped with a substrate 31a and side plates 31b and 31b, and has mounting plates 31c and 31c that are continuous with the side plates 31b.
An opening 35 is formed in the substrate 31a to serve as the aforementioned operating rod insertion portion 34.
Pin insertion holes 36 are formed in the both side plates 31b, and mounting holes 37 are formed in the mounting plate 31c.
The inner case 32 has both side plates 32b and 32b on the left and right sides near the lower portion of the substrate 32a, and has support pieces 32c in the middle between the upper and lower sides.
Pin insertion holes 38 are formed in the both side plates 32b, and mounting holes 39 are formed near the left and right sides of the substrate 32a.

The mounting plate 31c of the out case 31 is in contact with the left and right side portions of the substrate 32a of the inner case 32 to form the latch support portion 33 by the substrate 31a, the side plates 31b and the substrate 32a, and the mounting holes 37 and 39 communicate with each other. To do. Both side plates 32b of the inner case 32 overlap with both side plates 31b of the outer case 31, and the pin insertion holes 36 and 38 communicate with each other.
The outer case 31 and the inner case 32 are manufactured by sheet metal processing such as drilling, cutting and bending a single plate material.

The latch 40 includes a latch portion 40a, an operation rod insertion portion 40b, and an operation rod contact portion 40c.
The latch portion 40a has an arcuate surface 40d, a longitudinal surface 40e, and a lower surface 40f on the locking position side in the latch moving direction. When the arcuate surface 40d is pressed against the receiving metal 13, a force toward the unlocking position is generated. Works. The vertical surface 40e is engaged with the receiving metal 13.
The operation rod insertion portion 40b is opened in both sides of the latch movement direction at right angles to the latch movement direction, and the operation rod 50 is inserted into the operation rod insertion portion 40b.
The operating rod contact portion 40c is in contact with the operating rod 50 on the unlocking position side in the latch moving direction.
That is, the operation rod insertion portion 40b is between the lower surface 40f of the latch portion 40a and the operation rod contact portion 40c.

In this embodiment, the latch 40 includes a resin latch body 41 and a metal slider 42, and the latch body 41 is fitted into the slider 42 to form the latch 40.
The latch body 41 has a hollow portion 43 in the middle of the latch movement direction, and the hollow portion 43 opens on both sides in a direction perpendicular to the latch movement direction to form the operation rod insertion portion 40b, and the arcuate surface 40d. And a lower surface 40f and an operating rod contact portion 40c.
The slider 42 is U-shaped with a substrate 42a and both side plates 42b, and an opening window 44 and a support piece 45 are provided on the substrate 42a.
Then, the latch main body 41 is fitted and connected to the slider 42, whereby the opening window 44 and the cavity 43 communicate with each other to form the operation rod insertion portion 40b described above.
The lower portion of the latch body 41 is in contact with the support piece 45 of the slider 42 and is firmly connected so that the latch body 41 and the slider 42 do not come out in the latch moving direction.
Although not shown, the latch body 41 is provided with a protrusion, the slider 42 is formed with a hole in which the protrusion is fitted, and the protrusion and the hole are fitted to connect the latch body 41 and the slider 42 more firmly. You may do it.

The operation rod 50 includes an arm portion 51 and a ring-shaped operation portion 52. A pin insertion hole 53 is formed in the arm portion 51.
The arm portion 51 is inserted through the opening 35 of the outcase 31 (the operation rod insertion portion 34 of the case 30) and the opening window 44 of the slider 42, and the cavity portion 43 (the operation rod insertion portion 40b of the latch 40) of the latch body 41. The pin 54 is inserted into the pin insertion hole 36 of the outcase 31, the pin insertion hole 38 of the inner case 32, and the pin insertion hole 53 of the arm portion 51, and the arm portion 51 is swingably attached to the case 30. .

Thus, when the latch 40 is in the locked position, the arm portion 51 is in contact with the operating rod contact portion 40c of the latch 40 and is held at the first position. When the operating rod 50 is swung in the unlocking direction to the second position, as shown in FIG. 3, the arm portion 51 pushes down the operating rod contact portion 40a to set the latch 40 to the unlocking position.
When the operating rod 50 is swung in the latch locking direction, the arm portion 51 comes into contact with the case 30 (the opening 35 of the outcase 31) to be in the third position (see FIG. 4).
In this state, when the latch 40 is in the locked position, the upper surface of the cavity portion 40b of the latch body 41, the upper inner surface of the opening window 44 of the slider 42 (that is, the lower surface 40f of the latch portion 40a of the latch 40), and the arm portion 51. Is wider than the moving distance from the locking position of the latch 40 to the unlocking position.

The operating rod contact portion 40c of the latch 40 has an arc shape. When the operating rod 50 is in the first position shown in FIG. 2, the first point 51a of the arm portion 51 is in contact with the operating rod contact portion 40c.
When the operating rod 50 is swung to the second position from this state, as shown in FIG. 3, the second point 51b of the arm 51 is different from the position where the first point 51a is in contact with the operating rod contact portion 40c. To touch.
In short, when the operating rod 50 is swung from the first position to the second position, the position where the arm 51 of the operating rod 50 and the operating rod contact portion 40c are in contact with each other is in the longitudinal direction of the arm 51. Move sequentially.

  Therefore, when the latch 40 is moved from the locked position to the unlocked position by the operating rod 50, the load is not concentrated on one point of the arm portion 51 and the operating rod contact portion 40c. The contact portion of the contact portion 40c will not be abnormally worn.

  Further, when the operating rod 50 is in the first position, the swing point (pin 54) of the arm portion 51 and the first point 51a in contact with the operating rod contact portion 40c in the arm portion 51 are substantially the same height. The first point 51a is in contact with the top (highest portion) of the operating rod contact portion 40c, so that when the operating rod 50 is swung toward the second position from this state, the first portion 51a extends in the longitudinal direction of the arm portion 51. The sequentially shifted positions sequentially contact the arcuate surface of the operating rod contact portion 40c, and the latch 40 can be smoothly moved to the unlocked position.

The elastic member 60 is a coil spring and is provided between the support piece 32c of the inner case 32 and the lower surface 40f of the latch portion 40a of the latch 40.
A force toward the unlocking position acts on the latch 40 by its own weight and a downward swinging force due to the weight of the operating rod 50.
The elasticity of the elastic member 60 is greater than the force, and the operating rod 50 is pressed against the case 30 to hold the latch 40 in the locked position. For example, the arm 51 is brought into contact with the upper end surface of the opening 35 of the outcase 31 to hold the latch 40 in the locked position. In this case, the first position and the third position of the operating rod 50 are the same.
The latch 40 may be held in the locked position by balancing the force and the elasticity of the elastic member 60. In this case, the first position and the third position of the operating rod 50 are different from each other, and the operating rod 50 is moved in the latch moving direction to come into contact with the case 30 to be the third position.

The inner case 32 is brought into contact with the indoor side surface 20a of the upper casing 20, and a screw is screwed into the upper casing 20 from a mounting hole 37 of the outer casing 31, so that the case 30 is fixed to the upper casing 20 and the latch device 3 is fixed. Attach to 20.
Then, the cover 61 is fitted and attached to the case 30 to cover the case 30.
The cover 61 has an opening 62 through which the latch 40 is inserted and an opening 63 through which the operation rod 50 (arm portion 51) is inserted. The latch 40 and the operation rod 50 (operation portion 52) protrude from the cover 61. .

In the above-described embodiment, the case 30 is formed by the out case 31 and the inner case 32 for ease of assembly. However, the case 30 may be integrated or the case only by the out case 31. It may be 30.
The latch 40 is composed of a resin latch body 41 and a metal slider 42 so that the slider 42 can be held in a locked state even if the latch body 41 melts in a fire or the like. However, the latch 40 may be the latch body 41 alone.

  In each of the above explanations, an inward-turning window is used, but it goes without saying that the present invention can also be applied to an outward-turning window, a rotating window, and the like.

It is sectional drawing of the inversion window provided with the latch apparatus which shows embodiment of this invention. In the sectional view of the latch device, the latch is in the locked position and the operating rod is in the first position. In the sectional view of the latch device, the latch is in the unlocked position and the operating rod is in the second position. In the sectional view of the latch device, the latch is in the unlocked position and the operating rod is in the third position. In the sectional view of the latch device, the latch in the locked position is in contact with the receiving metal fitting. It is a disassembled perspective view of a latch apparatus.

  DESCRIPTION OF SYMBOLS 1 ... Joinery frame, 2 ... Building concrete, 3 ... Latch apparatus, 13 ... Receiving metal fitting (locking part), 30 ... Case, 33 ... Latch support part, 34 ... Operating rod insertion part, 40 ... Latch, 40a ... Latch part , 40b: operation rod insertion portion, 40c: operation rod contact portion, 50: operation rod, 60: elastic member.

Claims (2)

A case attached to the construction of the joinery, a latch provided movably over the locking position and the unlocking position in the case, an elastic member that biases and holds the latch to the locking position, and the case, It has an operating rod swingably mounted in the latch release direction and the latch locking direction along the latch movement direction,
The case has a latch support portion and an operation rod insertion portion,
The latch includes a latch portion, an operation rod insertion portion, and an operation rod contact portion, and the latch support portion of the case includes a locking position where the latch portion engages with a concrete-specific engagement portion of the joinery, and the latch The latch part is supported movably across the unlocking position away from the locking part,
The operating rod has an arm portion and an operating portion, and the arm portion passes through the operating rod insertion portion of the case and the operating rod insertion portion of the latch into the case in the latch unlocking direction and the latch locking direction. Mounted so that it can swing freely, the operation part protrudes from the case,
When the latch is in the locked position, the portion closer to the operation portion than the attachment portion of the arm portion is in contact with the operation rod contact portion of the latch, and the operation rod is held at the first position.
When the operating rod is in the second position swinging in the latch unlocking direction from the first position, the operating rod contact portion is pushed closer to the operating portion than the mounting portion of the arm portion, so that the latch resists the elastic member. Move to the unlocked position,
When the operating rod is in the third position where the arm portion is in contact with the case and supported so as not to swing in the latch locking direction, the distance between the arm portion and the lower surface of the latch portion is from the locking position of the latch. It is wider than the moving distance to the unlocking position, and the locking position latch can move to the unlocking position,
The operating rod contact portion of the latch has an arc shape, and when the operating rod is swung from the first position to the second position, a portion closer to the operating portion than the mounting portion of the arm portion of the operating rod and the operating rod A latch device characterized in that a position in contact with the contact portion is sequentially moved in the longitudinal direction of the arm portion. Install the construction detail openably in joinery frame in the fitting body, mounting the case in the latch device according to claim 1,
A fitting provided with a latch device, wherein the latch of the latch device is locked to the locking portion of the joinery frame when the latch of the latch device is in the locked position to lock the building concrete.

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