JP4158979B2 - Latch device and inward window using the latch device - Google Patents

Description

  The present invention relates to a latch device that locks an opening / closing body such as a window shoji or a door of furniture in a closed state, and an inversion window that locks the shoji in a closed state using the latch device.

Patent Document 1 discloses a latch device that locks a desk drawer in a closed state.
In this latch device, when the operating member is pushed up, the engaging claw moves downward and comes out of the opening of the top plate to release the lock.

Patent Document 2 discloses a latch device that locks a door in a closed state.
This latch device moves the latch upward by the spring force of the spring, engages the seat and holds the door in a closed state, and pushes the push button to cause the latch to resist the spring force of the spring. It moves downward to release from the seat and release the lock.

Japanese Patent No. 2760332 Japanese Utility Model Publication No. 58-50004

In the latch device disclosed in Patent Document 1, since the operating member moves in the vertical direction and the engaging claw moves in the vertical direction to lock and unlock, the operating member and the engaging claw have the same moving direction. (Vertical direction).
For this reason, when used as a latch device that locks the shoji of the inward window in the closed state, the engaging claw moves in the vertical direction, so that the operation member moves along the in-plane direction of the shoji. Since the operation is performed so as to move in the vertical direction, the operation of the operation member is troublesome.

In the latch device disclosed in Patent Document 2, since the push button moves in the horizontal direction (horizontal direction) and the latch moves in the vertical direction (vertical direction), the movement direction of the push button and the movement direction of the latch are Since it is different by 90 degrees, when it is used as a latch device that locks the shoji of the inward window closed in the closed state as described above, the push button can be operated to move in the outdoor outside direction along the out-of-plane direction of the shoji. Therefore, the operation is easy.
However, since the latch device described above moves the latch downward on the cam surface of the push button, the latch protrudes more than the push button in the unlocked state in which the latch has moved downward.
For this reason, when attaching to the shoji of the inside-down window as described above, it is necessary to process a hole or the like through which the push button is inserted in the latch device mounting surface of the shoji. May not be able to process the hole or the like through which the push button is inserted, and in that case, the latch device cannot be attached.

The inward window using the above-described latch device is closed by contacting the lower part of the window frame and the lower part of the shoji so as to be swingable in the direction of the inside of the room and swinging the shoji toward the outside of the door so as to be in contact with the window frame. In addition to being in a state, when it swings from the closed state toward the indoor side, it opens to open the window frame.
For this purpose, when the seat of the latch device described in Patent Document 2 is attached to the upper part of the window frame, and the push button, spring, and latch are attached to the upper part of the shoji, the push button faces the outdoor side. By pushing, the latch can be released from the seat and unlocked.However, by pushing the push button toward the outside of the room, the shoji is pushed and held in the closed state, so the shoji is shaken toward the inside of the room. In some cases, the door does not start, and even if the lock by the latch device is released, the shoji does not open smoothly.

  The object of the present invention is that the operating direction of the operating member is different from the moving direction of the latch by approximately 90 degrees, and the operating device does not protrude from the latch, and the shoji is smoothly opened by releasing the lock by the latching device. It is to provide an introverted window.

A first invention is a latch device having an apparatus main body and a receiving member,
The apparatus main body includes a main body, a latch, an urging means, a link mechanism, and an operation member.
The latch moves over an upper position where the latch is engaged with the receiving member to be locked, and a lower position where the latch is released from the receiving member.
The biasing means holds the latch in an upper position;
The link mechanism connects one end of the first link and one end of the second link, and the other end of the first link is inserted through a central opening provided in the latch so as to be swingable in the vertical direction in the main body. The other end of the second link is connected to the lower portion of the central opening so as to be swingable in the vertical direction, and swings between a first posture with the latch as an upper position and a second posture with the latch as a lower position. Move
The operating member moves between the indoor side position and the outdoor side position, and the link mechanism is in the first posture when in the indoor position, and the link mechanism is in the second posture when in the outdoor position. The latch device is characterized.

In the latch device according to the first aspect of the invention, the link mechanism connects the first link connected to the main body so as to be swingable up and down and the second link connected to the latch so as to be swingable up and down. In the shape that provided the roller in the connecting part,
The operating member is swingable between the indoor side position and the outdoor side position, and the roller is in contact with the outdoor side surface of the swinging member,
When the operation member swings from the indoor side position toward the outdoor side position, it is preferable that the link mechanism swings and displaces from the first posture to the second posture via the roller.
In this way, when the operating member is swung toward the outdoor position, the roller moves while rotating along the outdoor surface, so that the operating force of the operating member can be reduced.

According to a second aspect of the present invention, the lower portion of the window frame and the lower portion of the shoji are connected so as to be swingable in the indoor outside direction, and the shoji is swung toward the outdoor side so that the closed state is in contact with the window frame. An inward window that opens when it swings from the state toward the indoor side,
The apparatus main body of the first invention is attached to the indoor side surface of the upper part of the shoji, and the receiving member of the first invention is attached to the upper part of the window frame to form a latch device.
An inward window characterized in that an elastic member for applying an initial operating force to the closed shoji is provided.

According to the first aspect of the present invention, since the movement direction of the latch and the operation direction of the operation member are almost 90 degrees different from each other, the operation member can be easily operated and unlocked when it is attached to the inward-turning window.
Further, since the operating member does not protrude from the latch, it is not necessary to process a hole or the like in the upper part of the shoji when it is attached to the inward-turning window, and can be easily attached.

  According to the third aspect of the present invention, since the operating member is moved toward the outdoor side and unlocked, the shoji is swayed toward the indoor side by the elastic member, thereby opening the latch device. The shoji can be released smoothly by releasing the lock.

As shown in FIG. 1, the lower part of the window frame 10 and the lower part of the shoji 20 are connected so as to be swingable in the direction of the inside of the room, and the shoji 20 is swung toward the outside of the room as shown in FIGS. The window frame 10 is closed by contacting the window frame 10, preferably the upper horizontal sealing material 1, the lower horizontal sealing material 2, and the left and right vertical sealing materials 3. By swinging the shoji 20 toward the indoor side from this closed state, the door 20 is opened and separated from the window frame 10.
The shoji 20 in the closed state is given a force (that is, an initial operating force) that swings inwardly by the elastic member.
A latch device 4 is attached over the upper part of the window frame 10 and the upper part of the shoji 20 to constitute an inward-turning window.

Next, an example of specific shapes of the window frame 10 and the shoji 20 will be described.
The window frame 10 is formed by connecting an upper frame 11, a lower frame 12, and left and right vertical frames 13 in a rectangular shape.
The shoji 20 has an upper collar 21, a lower collar 22, and left and right vertical collars 23 connected in a square shape, and a glass 24 is mounted therein.
The lower frame 12 and the lower rod 22 are connected so as to be swingable in the indoor exterior direction, and the latch device 4 is attached across the upper frame 11 and the upper rod 21. That is, the lower frame 12 and the upper frame 11 are the lower and upper portions of the window frame 10 described above, and the lower and upper collars 22 and 21 of the shoji 20 are the lower and upper portions of the shoji 20 described above.
For example, as shown in FIG. 2, the upper piece 12a of the lower frame 12 and the recessed portion 22a of the lower collar 22 are fitted and connected so as to be rotatable in the indoor exterior direction, and the lower frame 12 and the lower collar 22 swing in the indoor exterior direction. It is connected freely. It is not restricted to this, You may connect with a hinge.

As shown in FIG. 2, a base piece 5a of a leaf spring 5 is attached to the lower frame 12, and this leaf spring 5 includes an intermediate piece 5b which is continuous with the base piece 5a and is curved in a substantially U shape, and its intermediate piece 5b. The front piece 5c is in contact with the lower collar 22 of the closed shoji 20 in the closed state, and applies an initial operating force to the shoji 20, and the leaf spring 5 constitutes the aforementioned elastic member. Yes.
For example, when the shoji 20 is in a closed state, the tip piece 5c of the leaf spring 5 is pushed by the lower collar 22, and the intermediate piece 5b is elastically compressed and deformed as shown by a solid line in FIG. The force which pushes and swings toward the indoor side is given to the shoji 20.
Then, when the shoji 20 is swung by a predetermined angle as shown by a virtual line in FIG. 2, for example, an angle at which the shoji 20 is swung inward by its own weight, the leaf spring 5 is shown by a virtual line in FIG. When the original shape is restored and the shoji 20 is further swung to the indoor side, the tip piece 5c and the lower collar 22 are separated.
The above-mentioned elastic member is not limited to the leaf spring 5, but may be a rubber body, a coil spring, a movable body projecting and biased by a spring, a cushion cylinder, or the like. That is, the elastic member may be any member as long as it applies an initial operating force to the closed shoji 20 as described above.

By attaching the leaf spring 5 described above, the shoji 20 is applied to the shoji 20 by the leaf spring 5 by releasing the lock by the latch device 4 while the shoji 20 is closed and locked by the latch device 4. The shoji 20 starts swinging toward the indoor side, that is, is pushed out by the initial operating force.
Therefore, the shoji 20 opens smoothly.

In FIG. 2, the outdoor vertical plate 22 b of the lower rod 22 is positioned on the outdoor side of the leaf spring 5, and projects downward from the leaf spring 5 so that the shoji 20 is in the closed state. The plate spring 5 is covered with a plate 22b so that it cannot be seen from the outside.
Specifically, the upper surface of the lower frame 12 has a stepped shape including an indoor upper surface 12b, a vertical surface 12c, and an outdoor upper surface 12d, and the upward pieces 12a are integrally provided on the indoor upper surface 12b. A sealing material attaching piece 12e is attached to the vertical surface 12c with a fixing tool, and the sealing material attaching piece 12e protrudes upward from the upward piece 12a, and the lower horizontal sealing material 2 is directed to the indoor side at the upper part. It is attached.
The lower rod 22 has a downward concave portion 22d between the outdoor vertical plate 22b and the indoor vertical plate 22c, and the concave portion 22a described above is formed in the lower portion of the indoor vertical plate 22c. The lower horizontal sealing material 2 is in contact with the indoor side vertical plate 22c.
The outdoor vertical plate 22b protrudes below the indoor vertical plate 22c and covers the plate spring 5 described above. An inward piece 22e is provided on the indoor side surface of the outdoor vertical plate 22b, and a tip piece 5c of the leaf spring 5 is in contact with the inward piece 22e.

As shown in FIG. 3, a vertical space 6 is formed between an inner surface 13 a of the vertical frame 13 and an outer surface 23 a of the vertical rod 23, and an inward arm 7 is provided in the vertical space 6.
The inward-turning arm 7 regulates the maximum swing angle of the shoji 20 toward the room, that is, the opening angle.

Next, the latch device 4 will be described.
As shown in FIGS. 2 and 4, the apparatus main body 30 and the receiving member 40 constitute the latch device 4, and the apparatus main body 30 is attached to the indoor side surface 21 a of the upper collar 21, and the receiving member 40 is the indoor of the upper frame 11. It is attached to the lower surface 11a.
The apparatus main body 30 includes a main body 31, a latch 32, an urging means 33, a link mechanism 34, and an operation member 35 as shown in FIGS. 4 to 8, and the main body 31 is attached to the indoor side surface 21 a of the upper collar 21. The latch 32 engages and disengages from the receiving member 40.
The latch 32 is provided in the main body 31 so as to be movable in the vertical direction. When the latch 32 moves to the upper position, it engages with the receiving member 40 and locks the shoji 20 in the closed state. When the latch 32 moves to the lower position, it disengages from the receiving member 40 and releases the lock.
The urging means 33 urges and holds the latch 32 in the upper position.
The link mechanism 34 swings between a first posture in which the latch 32 is moved to the upper position and a second posture in which the latch 32 is moved to the lower position.
The operation member 35 is provided on the main body 31 so as to be movable in the indoor outer direction, for example, swingable in the indoor outer direction, and the moving direction of the operating member 33 and the moving direction of the latch 32 are different by approximately 90 degrees.

As shown in FIG. 5, when the operation member 35 is in the indoor side position (that is, the non-operation position), the link mechanism 34 swings and displaces to the first posture, and the latch 32 moves to the upper position and is held. Thus, the shoji 20 is locked in the closed state.
As shown in FIG. 8, when the operation member 35 is in the outdoor position (that is, the operation position), the link mechanism 34 is oscillated and displaced to the second posture, and the latch 32 is moved to the lower position, and the lock is performed as described above. To release.

  Since this is the case, the movement direction of the operation member 35, that is, the operation direction and the movement direction of the latch 32 differ by approximately 90 degrees, so this latch device 4 is used as a latch device that inverts and locks the shoji of the window closed. In this case, the latch 32 can be moved in a direction along the in-plane direction (vertical direction), and the operation member 35 can be operated so as to move in a direction along the out-of-plane direction of the shoji 20 (inside / outside direction). The operation is easy.

In addition, the latch 32 is moved up and down by the swing of the link mechanism 34, and the link mechanism 34 is swung by the operation member 35, so that the operation member 35 does not protrude from the latch 32, and from the main body 31. There is no member projecting to the outdoor side, and the main body 31 can be attached only by being fixed to the attachment surface.
Therefore, when attaching to the indoor side surface of the shoji of the fall-in window, it is not necessary to process a hole or the like on the indoor side surface of the shoji, for example, the indoor side surface 21a of the upper collar 21, and can be easily attached.

Further, even if the inward window is provided with the latch device 4 that releases the lock by moving the operation member 35 toward the outdoor side, by providing the elastic member (leaf spring 5) as described above, By releasing the lock of the shoji 20 by the latch device 4, the shoji 20 swings toward the indoor side by the elastic member.
Therefore, in the inward window using the latch device 4 of the type that releases the lock by moving the operation member 35 to the outdoor side, the shoji 20 is smoothly opened by releasing the lock by the latch device 4.

Next, a specific form of the latch device 5 will be described.
The main body 31 includes a base 36 and a cover 37, and the base 36 is fixedly attached to the indoor side surface 21 a of the upper collar 21 with a fixing tool such as a screw 50.
The base 36 includes an attachment portion 36a, a latch guide portion 36b, a link attachment portion 36c, and an operation member attachment portion 36d. For example, one side plate 51, the other side plate 52, and a pair of one end plates 53 are provided, and screw holes 51a are formed at both end portions protruding from the other side plate 52 of the one side plate 51 to form the attachment portion 36a. The one side plate 51 is in contact with the indoor side surface 21a of the upper rod 21, and a screw 50 is screwed onto the screw hole 51a from the upper protruding piece 21b of the upper rod 21 and attached.
Each of the plates forms a frame whose upper surface is open, and the frame is the aforementioned latch guide portion 36b.
A horizontal piece 51b is provided on the lower side of the one side plate 51 toward the indoor side.
A vertical piece 54 is fixed to the one side plate 51, and the vertical piece 54 serves as the link attachment portion 36c.
The lower end portions of the one side plate 51 are cut and raised to form a projecting piece 55, and the projecting piece 55 is the aforementioned operation member mounting portion 36b.

The cover 37 is substantially box-shaped with the back surface opened by a front plate 37a, an upper plate 37b, a lower plate 37c, and a pair of end plates 37d, and an operation opening 56 is formed across the front plate 37a and the lower plate 37c. A latch opening 57 through which the latch 32 is inserted is formed in the upper surface plate 37b. A screw hole 58 is formed on the inner surface of the end face plate 37d in the front-back direction.
The opening end face of the cover 37 is in contact with both side portions of the one side piece 51 of the base 36, and screws 59 are screwed into screw holes 58 from the screw insertion holes 51 c to attach the cover 37 to the base 36.

The latch 32 is fitted into a frame formed by the one side plate 51, the other side plate 52, and a pair of one end plates 53 so as to be slidable in the vertical direction. A central opening 32b is provided at the center, and a pair of end openings 32c are provided near both left and right ends.
The central opening 32b opens on the front and back surfaces, and the end opening 32c opens on the back and bottom surfaces.

  The biasing means 33 is a spring 33a provided between the lateral piece 51b of the base 36 and the opening 32c near the end of the latch 32. The spring 33a moves the latch 32 upward and holds it in the upper position. ing. A pin 33b is provided on the horizontal piece 51b, and the pin 33b is fitted into the spring 33a to hold the spring 33a.

  In the link mechanism 34, one end of the first link 34a and one end of the second link 34b are connected by a pin 34c, and the other end of the first link 34a is inserted through the central opening 32b of the latch 32. The pin 36 is connected to the vertical piece 54 of the base 36 so as to be swingable in the vertical direction. The other end of the second link 34b is connected to the lower portion of the central opening 23b of the latch 32 so as to be swingable in the vertical direction by a pin 61. One end of the first and second links 34a and 34b protrudes from the opening 52a of the other side plate 52, and a roller 62 is provided at the connecting portion, for example, the pin 34c.

  As described above, since the latch 32 is held at the upper position by the spring 33a, the other end of the second link 34b moves upward via the pin 61, and the first and second links 34a, 34b are shown in FIG. As shown in the figure, the connecting portion (roller 62) is positioned closer to the room interior in a U-shape. That is, the link mechanism 34 is in the first posture.

The operating member 35 is attached to the operating member mounting portion 36d of the base 36 by a pin 63 so as to be swingable in the indoor outside direction, and the roller 62 is pressed against the back surface 35a of the operating member 35 to be in the indoor side position.
When the operation member 35 is swung toward the outdoor side, the other end portion (pin 61) of the second link 34b is moved downward by pushing the connecting portion of the link mechanism 34 toward the outdoor side via the roller 62. The latch 32 moves downward against the spring 33a.
Then, as shown in FIG. 8, when the operation member 35 is in the outdoor position, the first and second links 34a and 34b are substantially straight, that is, in the second posture, and the latch 32 is in the lower position.

  Thus, by swinging the operating member 35 from the indoor side position toward the outdoor side position, the roller 62 rotates along the back surface 35a (that is, the outdoor side surface) of the operating member 35 and moves downward. By moving and oscillating and displacing the link mechanism 34 from the second position to the first position, the force that swings the operation member 35 toward the outdoor side, that is, the operation force can be reduced.

  A connecting portion between the first link 34a and the vertical piece 54, that is, a connecting portion between the apparatus main body 31 (base 36) and the link mechanism 34, a connecting portion between the second link 34b and the latch 32, that is, a connecting portion between the latch 32 and the link mechanism 34. The connecting portion between the operating member 35 and the projecting piece 55, that is, the connecting portion between the apparatus main body 31 (base 36) and the operating member 35 is located in the intermediate portion of the latch 32 in the indoor / outdoor direction, and the back surface (attachment) of the one side plate 51. The surface of the apparatus main body 30 can be reduced in the indoor / outside direction.

The operation member 35 has a surface 35b having the same shape as the surface and lower surface of the cover 37 and the same size as the operation opening 56, and a protruding piece 35c is provided on the upper edge of the operation member 35. is there.
The projecting piece 35 c is in contact with the upper opening edge of the operation opening 56 on the back surface of the front plate 37 a of the cover 37 and holds the operation member 35 at the indoor side position.
The surface 35b of the operation member 35 is provided with a character (for example, PUSH) that means pressing.

In this way, the user can know that the operation member 35 is pushed and unlocked by a letter meaning pushing, and there is no fear of erroneous operation.
Further, when the operation member 35 is at the indoor side position, the surface of the cover 37 and the surface 35b of the operation member 35 are substantially flush, preferably flush with each other.

The receiving member 40 has a locking portion, for example, a locking hole 1 and a latch sliding receiving surface 42, which the latch 32 (locking protrusion 32 a) locks.
When the shoji 20 is swung toward the outdoor side, the latch 32 (locking protrusion 32a) slides along the latch sliding receiving surface 42, and when passing through the latch sliding receiving surface 42, the locking hole 41 is obtained. To lock the shoji 20 in the closed state.

In the above description, the latch 33 is held at the upper position by the spring 33a to form the biasing means 33. However, the latch 32 is held at the upper position by holding the link mechanism 34 in the first posture using a coil spring or a leaf spring. It is good also as a biasing means to do.
The operation member 35 may be slidably supported between the indoor side position and the outdoor side position. For example, a guide groove is provided on one side plate 51 of the base 36 in FIG. 7, and a slider provided on the operation member 35 is slidably fitted into the guide groove.
The latch device 4 described above is not limited to an inward-turning window, and can be used for other inner opening windows.

It is an inside view of an inversion window which shows an embodiment of the invention. It is a longitudinal cross-sectional view of FIG. It is a cross-sectional view of FIG. It is an expansion inside view of a latch device attachment part. It is an AA expanded sectional view of FIG. It is a partially broken front view of the state which removed the cover of the apparatus main body. It is a disassembled perspective view of a latch apparatus. It is sectional explanatory drawing of a lock release state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 4 ... Latch device, 5 ... Leaf spring (elastic member), 10 ... Window frame, 11 ... Upper frame (window frame upper part), 12 ... Lower frame (window frame lower part), 20 ... Shoji, 21 ... Upper arm (top of shoji) ), 22 ... Lower arm (bottom of shoji), 30 ... Device main body, 31 ... Main body, 32 ... Latch, 33 ... Biasing means, 34 ... Link mechanism, 34a ... First link, 34b ... Second link, 35 ... Operation 40, receiving member, 62 ... roller.

Claims (3)

A latch device having a device body and a receiving member,
The apparatus main body includes a main body, a latch, an urging means, a link mechanism, and an operation member.
The latch moves over an upper position where the latch is engaged with the receiving member to be locked, and a lower position where the latch is released from the receiving member.
The biasing means holds the latch in an upper position;
The link mechanism connects one end of the first link and one end of the second link, and the other end of the first link is inserted through a central opening provided in the latch so as to be swingable in the vertical direction in the main body. The other end of the second link is connected to the lower portion of the central opening so as to be swingable in the vertical direction. Move
The operating member moves between the indoor side position and the outdoor side position, and the link mechanism is in the first posture when in the indoor position, and the link mechanism is in the second posture when in the outdoor position. Latch device characterized. The link mechanism has a shape in which a first link connected to the main body is swingable up and down and a second link connected to the latch is swingable up and down, and a roller is provided at the connecting portion. ,
The operating member is swingable between the indoor side position and the outdoor side position, and the roller is in contact with the outdoor side surface of the swinging member,
The latch device according to claim 1, wherein when the operation member swings from the indoor side position toward the outdoor side position, the link mechanism swings and displaces from the first position to the second position via a roller. The lower part of the window frame and the lower part of the shoji are slidably connected to the outside of the room, and the shoji is swung toward the outside of the room, so that the window frame is in a closed state and the closed state is directed toward the indoor side. An inward window that opens when it swings,
The apparatus main body of claim 1 is attached to the indoor side surface of the upper part of the shoji, and the receiving member of claim 1 is attached to the upper part of the window frame to form a latch device.
An inward-turning window characterized in that an elastic member for applying an initial operating force to the closed shoji is provided.

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