Window locking device

Abstract

To provide a window locking device that can be easily and strongly installed on an existing sliding or single sliding window, is simple and inexpensive in configuration, and can be securely locked with simple handling.SOLUTION: A window locking device 6 has a latch 7 and a receiving metal fitting 8 with / from which the latch 7 can be engaged and disengaged. The latch 7 is equipped with a case 16, a locking body 17 attached to the case 16, and a spring 18 that forces the locking body 17 toward the receiving metal fitting 8. A locking rod 36, an operating rod 37 and a guide rod 35 of the locking body 17 are slidably supported in an inner guide hole 27, an outer upper guide hole 29 and an outer lower guide hole 30 of the case 16, respectively. The latch 7 is fixed to the upper end of a side part 14 of a vertical frame 11 of an inner sliding door 2 of a sliding door 1, and the band-shaped receiving metal fitting 8 has engagement holes 9 and 10 through which the locking rod 36 can be engaged and disengaged, and is fixed along an inner surface 19 of an upper frame 12 of an outer sliding door 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a window lock device for preventing a child from falling out, which prevents an accident in which a child opens a sliding window by himself / herself and leans out of the window to fall out. [Background technology]

[0002] In recent years, there have been a number of tragic accidents in which young children have unlocked apartment buildings, opened sliding windows without permission, and leaned out and fallen.

[0003] Crescent locks, which are configured to engage a crescent-shaped rotating latch with a receiving bracket attached to the inner surface of a sliding window frame, are well known as a means for locking a window.

[0004] A known crescent lock has a belt-shaped receiving bracket with two engaging claws spaced apart along the longitudinal direction, and this receiving bracket is attached to the vertical frame of the outer window sash and extends from the vertical sash frame of the outer window sash along the inside of the window side glass (see Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-331501 Summary of the Invention [Problem to be solved by the invention]

[0006] As a means for locking a sliding window to prevent small children from opening it without permission, a conventionally known crescent lock is somewhat effective.

[0007] However, from the perspective of adults, young children are creative and have the ability to be ingenious, so it is necessary to assume that they may use a chair or something in the room to reach into the crescent lock, operate it, and open it.

[0008] Therefore, even if a crescent lock is installed on a sliding window, a device for locking the sliding window is still required. For this reason, an auxiliary crescent lock may be provided, but the same configuration is meaningless.

[0009] A locking device that can be installed as an auxiliary measure to prevent small children from opening sliding windows without permission must at least meet the following requirements: (1) The locking device can be easily and securely attached in a position where it is out of reach even when a child is using a chair or the like. (2) As an auxiliary locking device, it has a simple structure, can be easily manufactured, and can be provided and obtained at a low cost. (3) The structure allows anyone to easily retrofit the door to an existing sliding door by folding it down. (4) The device is designed to be easily operable by users other than small children and to be automatically locked.

[0010] Incidentally, the conventional crescent lock shown in Patent Document 1 has a belt-shaped receiving bracket and is configured with two engaging claws spaced apart in the longitudinal direction, which allows the degree to which the sliding door is opened and maintained open to be adjusted, but fundamentally it is merely an improvement over the conventional crescent lock.

[0011] Since the band-shaped receiving bracket is arranged to extend from the vertical sash frame portion of the outer window sash so as to follow the inside of the glass of the outer window sash, the following problems remain. (1) The band-shaped brackets were attached to the inside of the glass of the exterior window sash, which makes it look bad when viewed from inside the room. (2) If the band-shaped receiving bracket is installed on the inside of the glass of the exterior window sash, it will be attached at a low position, which could lead to a small child using a chair or other object to grab it and release it. (3) A structure in which the receiving bracket is fixed to the vertical sash frame of the outer window sash is not necessarily preferable in terms of the strength of the receiving bracket itself and its attachment.

[0012] To solve the above-mentioned conventional problems, and to provide a window lock device that can be easily attached to windows of buildings such as apartment buildings in a position out of reach of small children, has a simple structure that can be manufactured and provided at low cost, and can be easily attached to windows in a position out of reach of small children. [Means for solving the problem]

[0013] In order to solve the above problems, the present invention provides a window lock device for locking a window, which includes a hook and a receiving metal fitting to which the hook can be engaged and disengaged, the hook including a case, an operation engaging body attached to the case, and a spring for biasing the operation engaging body toward the receiving metal fitting, the case having an inner guide hole formed in an inner wall thereof, an outer upper guide hole and an outer lower guide hole formed at an upper position and a lower position, respectively, on an outer wall of the case, the operation engaging body integrally having a locking rod, a guide rod, an operating rod, and a connecting rod, the locking rod and the guide rod each having an upper guide hole and a lower guide hole, respectively. a connecting rod that connects the locking rod, guide rod and operating rod, the operating rod being inserted into the inner guide hole and slidably supported on the case, an operating part being provided at an end extending from the inner guide hole to the outside of the case, the receiving fitting being formed in a band shape and having an engagement hole formed on at least one end side with which the outer end of the locking rod can be engaged and disengaged, the latch fitting being attached to the upper end of the vertical frame of the inner screen of the sliding window, and the receiving fitting being attached to the upper frame of the outer screen of the sliding window.

[0014] The outer wall of the case is formed to be wider than the inner wall, and the part of the outer wall which is wider than the inner wall may be configured to be able to abut and be fixed to the outer surface of the vertical frame of the inner screen.

[0015] A reinforcing plate is fixed to the case, and the reinforcing plate may be arranged along the inner wall and be configured to be able to abut against the inner surface of the vertical frame of the inner screen and be fixed thereto.

[0016] In order to solve the above problems, the present invention provides a window lock device for locking a window, which includes a hook and a receiving metal fitting to which the hook can be engaged and disengaged, the hook including a case, an operation engaging body attached to the case, and a spring for biasing the operation engaging body toward the receiving metal fitting, an inner guide hole is formed in the inner wall of the case, and an outer upper guide hole and an outer lower guide hole are formed at upper and lower positions, respectively, in the outer wall of the case, the operation engaging body integrally has a locking rod, a guide rod, an operating rod, and a connecting rod, and the locking rod and the guide rod are inserted into the upper guide hole and the lower guide hole, respectively. a connecting rod that connects the locking rod, guide rod and operating rod, the operating rod being inserted into an inner guide hole and slidably supported on the case, an operating part being provided at an end extending from the inner guide hole to the outside of the case, the receiving fitting being formed in a band shape and having an engagement hole formed on at least one end side with which the outer end of the locking rod can be engaged and disengaged, the latch fitting being attached to the upper end of a vertical frame that constitutes the opening frame of a building for a single-sliding window, and the receiving fitting being attached to the upper frame of a single-sliding shoji screen of the single-sliding window.

[0017] The outer wall of the case is formed to be wider than the inner wall, and the part of the outer wall which is wider than the inner wall may be configured to be abutted and fixed to the outer surface of the vertical frame that constitutes the opening frame of the building for the single-sliding window.

[0018] A reinforcing plate is fixed to the case, and the reinforcing plate may be provided along the inner wall and configured to be able to abut and be fixed to the inner surface of a vertical frame that constitutes the opening frame of the building in the single-sliding window.

[0019] The case preferably comprises a body and a lid formed by pressing a metal sheet, the lid being attached to the body as an integrated unit. Effect of the Invention

[0020] The window lock device according to the present invention provides the following effects. (1) The window can be installed in a position that makes it impossible for a small child to reach the window, even if they are using a chair or other device. (2) As an auxiliary window locking device, it has a simple structure, has a small number of parts, is easy to manufacture, and can be provided and obtained at a low price. (3) It can be easily and securely attached to existing windows or doors by anyone as a retrofit. (4) The device is designed to be easily operable by users other than small children and to be automatically locked. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1A is a perspective view illustrating a configuration of a window locking device according to a first embodiment of the present invention, and FIG. 1B is an enlarged view of a main portion of FIG. [Diagram 2] 1A and 1B are side perspective views of the first embodiment, in which (a) shows a locked state and (b) shows an unlocked state. [Diagram 3] 1A and 1B are perspective views showing a latch case and an operation locking body in the locking operation device of the above-mentioned embodiment 1, and FIG. 1C is a perspective view showing a modified example of embodiment 1 of the window lock device according to the present invention. [Figure 4] 1A and 1B are diagrams illustrating an example of a manufacturing process for the case of the hook and the operation locking body in the locking operation device of Example 1, in which (a) and (b) respectively show a blank (part shown in an exploded view) and an oblique view of the main body of the case, (c) and (d) respectively show a blank and an oblique view of the case lid, and (e) is a side view of the operation locking body. [Diagram 5] FIG. 11 is a diagram illustrating a configuration in which the window lock device according to the present invention is applied to a single-sliding window as another usage mode of the first embodiment, where (a) and (b) are front views from the inside of the room showing the single-sliding window in a closed state and an open state, respectively, and (c) and (d) are a front view and a vertical cross-sectional view showing an enlarged view of the main parts when the window lock device is attached to a single-sliding window, respectively. [Figure 6]11A and 11B are diagrams showing blanks and the like in the manufacturing process to explain a second embodiment of a window lock device according to the present invention, in which (a) and (b) are diagrams showing the blanks for the main body and lid of the latch case, respectively, and (c) and (d) are diagrams showing the front and side views of the operating rod. [Figure 7] 11A and 11B are diagrams for explaining the second embodiment, in which (a) and (b) are perspective views of the cover and main body of the case of the hook, respectively, and (c) is a perspective view of the operating locking rod. [Figure 8] 1A and 1B are perspective views of the configuration of the hanging fitting as viewed from diagonally outside and inside, respectively, and FIG. 1C is a diagram illustrating a modified example of the embodiment 2. [Figure 9] 10A and 10B are side perspective views for explaining the operation of the second embodiment, where FIG. 10A shows a locked state and FIG. BEST MODE FOR CARRYING OUT THEINVENTION

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A best mode for carrying out a locking device for a sliding window according to the present invention will be described below based on an embodiment with reference to the drawings. EXAMPLES

[0023] In the present invention described in the specification, drawings and claims, when viewed from the inside of a building window, the outside is referred to as the outside or exterior side, the inside of the building window is referred to as the inside or interior side, and the left and right sides (for example, the direction in which the sliding screen of a sliding window is opened and closed) are referred to as the left-right direction, lateral direction, side or side side.

[0024] Example 1 In the present invention, a shoji refers to a window body or door made of glass, resin, wood, etc., that can be opened and closed by moving horizontally, such as a sliding window, a single sliding window, a single sliding door, etc. As shown in Figure 1, a sliding window 1 has an inner shoji 2 on the right side and an outer shoji 3 on the left side.

[0025] In this embodiment 1, a window locking device according to the present invention will be described in a configuration in which it is mainly applied to a sliding window (including "sliding door") 1. In addition, a configuration in which it is applied to a single-sliding window (including "single-sliding door") will be described later as another application example of the window locking device according to the present invention.

[0026] 1 to 4 are diagrams for explaining a first embodiment in which a window lock device 6 according to the present invention is applied to a sliding window 1. In the drawings, an inner door 2 (inner door) on the right side and an outer door 3 (outer door) on the left side are configured to be able to slide relative to each other, and can be opened and closed by sliding them relative to each other.

[0027] The window lock device 6 has an inner screen 2 and an outer screen 3 as described above, and is attached to the sliding window 1 that is opened and closed by sliding it, and is used for unlocking and locking.

[0028] 1 and 2, the window lock device 6 includes a hook 7 and a receiving bracket 8. The hook 7 is fixed to the upper end of the side surface 14 of the vertical frame 11 on the sliding side of the inner shoji screen 2.

[0029] The receiving bracket 8 is made of a strip of material and is fixed to the inner surface 19 of the upper frame 12 of the outer screen 3 so as to extend longitudinally along the upper frame 12 from the sliding side to the other side. When the sliding window 1 is closed, the sliding side end 13 of the receiving bracket 8 is positioned approximately the same as the side surface 14 of the vertical frame 11 on the sliding side of the inner screen 2 when viewed from the front from inside the room (see Figure 1).

[0030] As shown in Figures 1, 2, 3(a) and (c), the hanging fitting 7 comprises a case 16 (shown by two-dot chain lines in Figures 1 and 3(c)), an operation locking body 17 and a spring 18.

[0031] The case 16 may be formed by pressing a metal sheet such as a steel sheet having a thickness of about 1 to 2 mm, or may be formed by molding a resin material. In this embodiment 1, the case 16 is described as being formed by pressing a metal sheet.

[0032] As shown in Figures 1, 2, 3(a) and 3(c), the case 16 is a rectangular box having an inner wall 21, an outer wall 22, a left side wall 23, a right side wall 24, a top wall 25 and a bottom wall 26 (see Figure 3(a)). The inner wall 21 and the outer wall 22 each have a guide hole formed therein.

[0033] Specifically, an outer upper guide hole 29 and an outer lower guide hole 30 are formed at the top and bottom of the outer wall 22 of the case 16, respectively, and an inner guide hole 27 is formed at approximately the middle position between the top and bottom of the inner wall 21 of the case 16.

[0034] The operation locking body 17 is made of a metal material such as steel or a resin material. As shown in Fig. 3(b), the operation locking body 17 is integrally provided with an upper locking rod 36, a lower guide rod 35, an intermediate operation rod 37, and a connecting rod 38. The connecting rod 38 is formed in the vertical direction so as to connect the locking rod 36, the operation rod 37, and the guide rod 35 integrally.

[0035] The locking rod 36 is generally formed in a - shape (horizontally linear). The inner end of the operating rod 37 is bent downward to form a hook-shaped operating portion 39, and the operating rod 37 is generally formed in a substantially V shape.

[0036] The operation locking body 17 is attached to the case 16 as follows. That is, as shown in Figures 1 and 2, most of the operation locking body 17 is housed inside the case 16. And, in the operation rod 37, a spring 18 (compression coil spring) is wound around the outer periphery between the connecting rod 38 and the inner wall 21 of the case 16.

[0037] As a result, the operating locking body 17 is constantly biased outward so that the outer ends of the locking rod 36 and the guide rod 35 protrude outward from the outer upper guide hole 29 and the outer lower guide hole 30 toward the outside of the outer wall 22 (see Figures 1 and 2(a)).

[0038] The biasing means is not limited to that in the first embodiment, and may be of another configuration as long as it is a spring that biases the operation lock body 17 outward. For example, although not shown, a tension spring may be installed between the operation lock body 17 and the outer wall 22 of the case 16.

[0039] The hanging hardware 7 is fixed to the upper end of the side surface 14 of the vertical frame 11 of the inner screen 2 by adhesive or screwing the right side wall 24 of the case 16 to the side surface 14 of the vertical frame 11. Alternatively, in the manufacturing process described below, once the main body of the case 16 as shown in Fig. 4(b) is manufactured, the right side wall 24 may be screwed from the inside of the case 16 to the side surface 14 of the vertical frame 11.

[0040] 1 and 2, the operating rod 37 is inserted into the inner guide hole 27 of the case 16 and is supported so as to be able to slide horizontally inward and outward. The guide rod 35 is mounted so that its outer end side always protrudes at least slightly from the outer lower guide hole 30 of the case 16.

[0041] As described above, the hook-shaped operating part 39 is formed on the inner end side of the operating rod 37. This operating part 39 is formed so as to always protrude inward (toward the room side) from the inner wall 21 of the case 16 when unlocking and when locking.

[0042] 3(c), the operation part may be configured in such a manner that a disk-shaped knob-shaped operation part 40 is fixed to the inner end of a straight operation rod 37. This can be formed by inserting the straight operation rod 37 into the inner guide hole 27 and then fixing (e.g., screwing) the knob-shaped operation part 40 to the outer end of the straight operation rod 37.

[0043] The receiving bracket 8 is made of a thin strip of metal such as aluminum or plastic, and is fixed to the inner surface 19 of the upper frame 12 of the outer door 3 as shown in Figures 1 and 3(c). The thickness of the receiving bracket 8 is smaller than the gap between the upper frame 12 of the outer door 3 and the upper frame 15 of the inner door 2 so that it does not get stuck (does not come into contact) when the sliding window 1 is opened or closed, i.e., when the outer door 3 is opened relative to the inner door 2. Specifically, the thickness of the receiving bracket 8 is about 2 to 3 mm.

[0044] 1 and 3(c), the receiving fitting 8 is formed with an engagement hole 9 at least on the sliding side end 13, into which the outer end of the locking rod 36 can be engaged. Furthermore, the receiving fitting 8 may be configured to have one or more engagement holes (see engagement hole 10 in FIG. 1(a)) formed at intervals in the longitudinal direction.

[0045] Production process: The manufacture of the latch 7 of the window lock device 6 of the present invention includes the steps of manufacturing the rectangular metallic case 16 and the operative locking body 17, and the step of attaching the operative locking body 17 to the case 16; however, it is necessary to attach the operative locking body 17 during the assembly of the case 16.

[0046] The case 16 is manufactured by using a sheet metal press machine to press the body 45 and the cover 46 of the case 16 from steel plates about 1 to 2 mm thick, and then assembling the two together to form a single unit.

[0047] Regarding the case 16, there are various configurations for the main body 45 and the lid 46, and the manufacturing process of the case 16 varies accordingly. One example will be described below with reference to FIG.

[0048] The main body 45 of the case 16 is formed by punching out the outer shape of sheet metal material such as a steel plate using a sheet metal press machine, into a blank 50 for the main body 45 (a sheet metal material in process having the same shape as the expanded view) as shown in the expanded view of Figure 4(a).

[0049] In addition, in the blank 50, an outer upper guide hole 29 and an outer lower guide hole 30 are formed by punching in the outer wall 22 at intervals above and below the wall.

[0050] The blank 50 for the main body 45 formed by this sheet metal press processing is then folded using a press machine, and the upper edge 51 and lower edge 52 of the left and right side walls 23, 24 are joined by brazing or the like to the side edge 53 of the top wall 25 and the side edge 54 of the bottom wall 26, respectively, to create the main body 45 of the case 16 as shown in Figure 3(b).

[0051] As another method for joining the upper edge 51 and the lower edge 52 of the left and right side walls 23, 24 to the edge 53 of the top wall 25 and the edge 54 of the bottom wall 26, respectively, it is preferable to form fixing allowances (fixing margins) on the upper edge 51 and the lower edge 52 of the left and right side walls 23, 24 of the blank 50, although this is not shown in the figures.

[0052] After bending such fixing margins, upper edge 51 and lower edge 52 of left and right side walls 23, 24 may be fixed to edge 53 of top wall 25 and edge 54 of bottom wall 26, respectively, with small screws or rivets. Alternatively, recesses or protrusions may be formed in the fixing margins, which may be elastically engaged with protrusions or recesses formed in top wall 25 and bottom wall 26 for fixing.

[0053] As with the main body 45, the lid 46 of the case 16 is formed by forming a blank 57 for the lid 46 as shown in the exploded view in Figure 3(c) and bending it. After that, the upper and lower edges of the left and right side walls are joined to the edges of the top wall and the bottom wall, respectively, by brazing or the like, to create the lid 46 of the case 16 as shown in Figure 3(d).

[0054] The inner guide holes 27 are formed by punching in the inner wall 21 of the blank 57 for the lid 46. The lid 46 is formed slightly larger than the opening of the case 16 so that it can be placed over the opening side of the case 16.

[0055] If concave or convex portions are formed on the left and right side walls, top wall, bottom wall, etc. of the lid 46, and convex or concave portions are formed on the left and right side walls, top wall, bottom wall, etc. of the main body 45, the lid 46 can be easily fixed to the main body 45 by elastically fitting it to it.

[0056] The operation locking body 17 is manufactured by welding and bending a steel square bar with a cross section of about 6 x 6 mm, as shown in Fig. 4(d) in plan view, and is configured to include a guide rod 35, a locking rod 36, an operation rod 37, and a connecting rod 38. It may be manufactured by casting a metal material. Alternatively, it may be molded from a resin material.

[0057] When assembling the hook 7, first, the spring 18 is attached to the operating rod 37 from its inside (operating portion 39), and the operating rod 37 is inserted from the operating portion 39 into the inner guide hole 27 in the inner wall 21 of the lid 46. If it is difficult to insert the operating rod 37 from the operating portion 39 into the inner guide hole 27, the operating rod 37 may be inserted into the inner guide hole 27 and then bent to form a hook-shaped operating portion 39, or a knob-shaped operating portion 40 as shown in Fig. 3(c) may be attached later.

[0058] Then, while inserting the outer ends of the guide rod 35 and the locking rod 36 into the outer upper guide hole 29 and the outer lower guide hole 30, respectively, the lid 46 is placed over the opening of the main body 45 of the case 16 and fixed to each other by means of soldering, screwing, riveting, or concave-convex engagement, etc.

[0059] In the first embodiment, the blanks for the body and the lid may have a different shape from that shown in Fig. 4. For example, although not shown, the blanks for the body and the lid may be formed by cutting out the outer wall of the case for the hanging bracket 7 so that it is wider than the inner wall. The case formed by assembling the blank body and the lid has an outer wall that extends to the outer surface of the vertical frame 11 of the inner screen 2 and can be fixed by abutting against the outer surface.

[0060] With this configuration, the portion of the outer wall that is wider than the inner wall can be fixed by abutting it against the outer surface of the vertical frame 11 of the inner screen 2, so that the hanging hardware 7 can be fixed more firmly to the vertical frame 11. This configuration will also be described in Example 2 in Figures 6(a), 7(b), 8, etc.

[0061] Additionally, although not shown in Example 1, as an option, a reinforcing plate that is L-shaped in a plan view and abuts the left side wall 23 and inner wall 22 of the case 16 can be fixed to the left side wall 23 and further fixed to the inner surface of the vertical frame 11 of the inner screen, thereby reinforcing the case 16 itself.

[0062] Moreover, by abutting and fixing the reinforcing plate to the vertical frame 11 of the inner sash, the fixing strength of the hanging metal fitting 7 to the vertical frame 11 can be increased. The configuration of such a reinforcing plate will also be described in the second embodiment with reference to FIG. 8(c).

[0063] Effect: The operation of the window lock device 6 according to the present invention will be described below. When using the window lock device 6, the hook 7 is attached to the sliding window 1 by fixing the right side wall 24 to the upper end of the side surface 14 of the vertical frame 11 on the sliding side of the inner screen 2, as shown in Figure 1.

[0064] The hanging bracket 7 can be fixed to the upper end of the side surface 14 of the vertical frame 11 on the sliding side using adhesive, double-sided tape, etc., or it may be fixed to the right side wall 23 of the main body 45 of the case 16 using a fixing means such as a screw or rivet before attaching the lid 46 to the main body 45 of the case 16 (see Figure 4(b)).

[0065] The receiving bracket 8 is fixed to the inner surface 19 of the upper frame 12 of the outer sash 3 so as to extend horizontally along the upper frame 12 from the sliding side to the other side. This fixing can be done using adhesive, double-sided tape, etc., in the same way as the hanging bracket 7. Alternatively, it may be fixed using a fixing means such as a screw or a rivet.

[0066] In the operation locking body 17 attached to the case 16 of the hanging fitting 7, the locking rod 36 and the guide rod 35 are inserted into the outer upper guide hole 29 and the outer lower guide hole 30, respectively, and are slidable inward and outward. Similarly, the operation rod 37 is inserted into the inner guide hole 27, and is slidable inward and outward.

[0067] In other words, the operation locking body 17 can slide integrally with respect to the case 16 when the operating rod 37 is operated, and is normally biased outward. That is, the locking rod 36 and the guide rod 35 are biased by the spring 18 so as to protrude outward from the outer upper guide hole 29 and the outer lower guide hole 30, respectively.

[0068] The locking rod 36 is biased outward by the spring 18, so that when the sliding window 1 is closed, the outer end of the locking rod 36 is engaged with the engagement hole 9 of the receiving bracket 8, as shown in Figures 1 and 2(a), the sliding window 1 is locked by the window lock device 6, and the outer screen 3 and inner screen 2 cannot be opened.

[0069] When opening the sliding window 1, the user places their finger on the operating part 39 and pulls it inward, as shown in Figure 2(b), to move the outer screen 3 to the right in Figure 1 while removing the outer end of the locking rod 36 from the engagement hole 9 of the receiving bracket 8, thereby opening the outer screen 3 relative to the inner screen 2.

[0070] Although not shown in the figure, by engaging the outer end of the locking rod 36 into another engagement hole 10 longitudinally separated from the engagement hole 9, the outer screen 3 can be maintained open at a predetermined distance relative to the inner screen 2.

[0071] When closing the sliding window 1, if the outer screen 3 is closed, the locking rod 36 is biased outward by the spring 18, so that the outer end of the locking rod 36 engages with the engagement hole 9 of the receiving bracket 8 and is automatically locked.

[0072] Furthermore, if the sliding window 1 is maintained in a partially open state with the locking rod 36 engaged in the engagement hole 10, by placing your finger on the operating part 39 and pulling it inward, as shown in Figure 2(b), the outer end of the locking rod 36 will be pulled out of the engagement hole 9 of the receiving bracket 8 and then the outer screen 3 will be closed, and the outer end of the locking rod 36 will automatically engage with the engagement hole 9 of the receiving bracket 8 and will be locked.

[0073] When the sliding window 1 is opened, the receiving metal fitting 8 is located outside the surface of the vertical frame 11 of the inner screen 2 through a gap, so it does not come into contact with or get caught on the vertical frame 11 and upper frame 15 of the inner screen 2.

[0074] The latch 7 of the window lock device 6 is attached to the upper end of the side 14 of the vertical frame 11 of the inner screen 2, so a small child cannot reach it even if they use a chair or the like. Therefore, a small child cannot use a chair or the like to unlock the window lock device 6 and open the sliding window 1, preventing an accident such as a child falling out of the window.

[0075] In addition, the window lock device 6 has a locking rod 36 of its latch 7 constantly biased outward by a spring 18, so that when the sliding window 1 is closed, its outer end engages with the engagement hole 9 of the receiving bracket 8, automatically locking it. Like conventional crescent locks, this prevents forgetting to lock the window, and is therefore useful not only for preventing small children from falling out, but also as a means to prevent suspicious people from entering the window.

[0076] The window lock device 6 according to the present invention has the features of being simple in structure, having a small number of parts, and being easily manufactured in a small number of manufacturing steps as explained in the manufacturing process above, so that it can be provided and obtained at a low price.

[0077] Furthermore, the hook 7 of the window lock device 6 can be attached to the upper end of the side surface 14 of the vertical frame 11 of the inner screen 2 with adhesive, double-sided tape, etc., and the receiving bracket 8 can be attached to the inner surface 19 of the upper frame 12 of the outer screen 3 with adhesive, double-sided tape, etc., so that even an ordinary user can easily install the window lock device 6 to a sliding window 1 without relying on a specialist.

[0078] The operation locking body 17 has an engagement rod 36 and an inner guide rod 35 guided by the outer upper guide hole 29 and the outer lower guide hole 35, respectively, and an operation rod 37 guided by the inner guide hole 27, and is supported so as to be horizontally slidable inward and outward, so that it can be operated smoothly and easily without getting stuck.

[0079] As described above, the window lock device 6 of the present invention can be installed in a high place out of reach of small children, preventing them from unlocking it, and can be easily installed and operated by anyone other than small children.In addition, it automatically locks when the sliding window 1 is closed, eliminating the risk of forgetting to lock the window, and providing a significant effect in terms of crime prevention.

[0080] Another use case: 5 is a diagram for explaining another example of use of the window lock device 6 according to the present invention. In this example of use, the window lock device 6 according to the present invention is applied to a single sliding window 61.

[0081] The single-sliding window 61 is a window that can be opened and closed by pulling and sliding a single-sliding screen 63 left and right against an opening frame 62 formed in a wall 60 of a building. Note that, as a single-sliding window, there is also a window (not shown) that can be opened and closed by pulling and sliding an outer screen (or an inner screen) left and right against an inner screen (or an outer screen) that is fitted and fixed into the opening frame 62 of the building.

[0082] The window lock device 6 applied to a single sliding window 61 has exactly the same structure and function as the window lock device 6 shown in Figures 1 to 4. The only difference is that the latch 7 of the window lock device 6 is attached to a different object.

[0083] That is, when the window lock device 6 is applied to a sliding window 61, the hook 7 is attached to the upper end of the side surface 67 of the vertical frame 66 that constitutes the opening frame 62 on the building side, as shown in Figures 5(a) to 5(d). The receiving bracket 8 may be configured to be attached to the side surface of the upper frame 64 of the sliding screen 63.

[0084] The operation of the window locking device 6 applied to the sliding window 61 is the same as that of the window locking device 6 of the above-described embodiment 1, and when the sliding screen 63 of the sliding window 61 is closed, the outer end of the locking rod 36 engages with the engagement hole 9 of the receiving bracket 8 and is locked, as shown in Figures 5(a), (c), and (d).

[0085] When opening the sliding screen 63 of the sliding window 61, as shown in FIG. 5(b), the operating rod 37 is pulled to remove the outer end of the locking rod 36 from the engagement hole 9 of the receiving bracket 8 to unlock it.

[0086] Example 2 A window locking device according to a second embodiment of the present invention will be described below with reference to Figures 6 to 9. A window locking device 81 (see Figure 9(a)) according to the second embodiment is basically the same in configuration, action, etc. as the window locking device 6 according to the first embodiment.

[0087] When the window lock device 81 of the second embodiment is applied to a sliding window 1, the hanging bracket 83 and the receiving bracket 82 are attached to the side surface 101 of the vertical frame 100 of the inner screen 3 of the sliding window and the inner surface of the upper frame 12 of the outer screen, respectively, in the same manner as in the first embodiment (see Figure 1) (see Figure 9).

[0088] Furthermore, in a configuration in which the window lock device 81 in Example 2 is applied to a sliding window 61, similar to another example of use of Example 1 (see Figure 5), the receiving bracket 82 and the hanging bracket 83, although not shown, are attached to the inner surface of the upper frame 64 of the sliding shoji screen 63 of the sliding window 61 and the upper end of the side surface 67 of the vertical frame 66 that constitutes the opening frame 62 of the building in the sliding window 61, respectively.

[0089] While receiving bracket 82 (see FIG. 9) has the same configuration as receiving bracket 8 of embodiment 1, hanging bracket 83 shown in FIGS. 8 and 9 differs in appearance and detailed configuration from hanging bracket 7 of embodiment 1. However, the basic configuration and function are the same. Below, a window lock device 81 of embodiment 2 will be described, focusing on the configuration that differs from window lock device 6 of embodiment 1.

[0090] Regarding the window lock device 81 of the second embodiment, the configuration that differs from the window lock device 6 of the first embodiment will become clearer when the manufacturing process of the hook 83 is explained. Therefore, the configuration of the hook 83 will be explained clearly with reference to Figures 6 to 8 throughout the manufacturing process.

[0091] When manufacturing the main body 87 (see FIG. 7(b)) of the case 86 of the hanging bracket 83, first, a blank 93 for the main body of the case 86 is formed by sheet metal pressing from a steel plate, as shown in FIG. 6(a) so as to have an inner wall 88, an outer wall 89, a side wall 90, a top wall 91 and a bottom wall 92.

[0092] The inner wall 88 defines an inner guide hole slot 94, and the outer wall 89 defines an outer upper guide hole slot 95 and an outer lower guide hole slot 96.

[0093] Here, the main body 87 of the case 86 (see FIG. 8(a)) of the hanging fitting 83 of the second embodiment is characterized in that the width (lateral width) of the outer wall 89 of the main body 87 is formed to be larger than the width of the inner wall 88, as shown in the blank 93 of FIG. 6(a).

[0094] With this configuration, when the hanging bracket 83 is fixed to the side 101 of the vertical frame 100 of an inner screen (not shown here, but the same as the inner screen 2 shown in Figure 1(a) of Example 1), the inner surface of the outer wall 89 of the main body 87, which is formed to be wider than the inner wall 88, can be abutted along the outer surface 102 of the vertical frame 100 and fixed, as shown in Figures 8(a) and (b), thereby improving the fixing strength of the hanging bracket 83 to the vertical frame 100.

[0095] When manufacturing the lid 106 of the case 86 of the hanging fitting 83, first, a blank 111 having an inner wall 108, an outer wall 109 and a side wall 110 is formed from a steel plate by sheet metal pressing, as shown in FIG. 6(b).

[0096] A guide hole groove 112 is formed in the inner wall 108, and an outer upper guide hole 113 and an outer lower guide hole 114 are formed in the outer wall 109 in positions corresponding to the outer upper guide hole groove 95 and the outer lower guide hole groove 96 of the main body 87 (blank 93), respectively.

[0097] As shown in Figures 6(c), (d), and 7(c), the operating locking body 120 is formed by inserting and fixing an operating rod 124 horizontally at approximately the middle of the locking rod 122 in the longitudinal direction, with its outer end fixed, and the operating rod 124 vertically inserted and fixed.

[0098] Then, the blank 93 for the body of the case 86 and the blank 111 for the lid are folded by a press machine to form the body 87 and the lid 106 as shown in Figs. 7(b) and (a).

[0099] Then, the locking rod 122 and the guide rod 123 of the operation locking body 120 are inserted into the outer upper guide hole 113 and the outer lower guide hole 114 from the inside of the lid 106, respectively. Furthermore, a spring 126 (compression coil spring) is wound around the inside of the operation rod 124, and the operation locking body 120 is attached to the lid 106 through the guide hole groove 112 of the inner wall 108.

[0100] As shown in Fig. 7(c), a knob-shaped operating part 125 is screwed and attached to the inner end of the operating rod 124. The lid 106 with the operating rod 124 attached is fitted to the main body 87 of the case 86 formed as shown in Fig. 7(b) from the opening side of the main body 87 and assembled.

[0101] At this time, the locking rod 122 and the guide rod 123 of the operation locking body 120 protrude outward from the cover 106 through the outer upper guide hole 113 and the outer lower guide hole 114, respectively. However, by passing through the outer upper guide hole groove 95 and the outer lower guide hole groove 96 of the main body 87, they do not get in the way of assembly.

[0102] Similarly, the operating rod 124 protrudes inward from the guide hole groove 112, but does not get in the way of assembly by passing through the inner guide groove hole 94 of the main body 87. In this manner, the cover 106 is assembled to the main body 87 of the case 86 and the two are fixed together with screws, thereby forming the hook 83 as shown in Figures 8(a) and (b).

[0103] As in the first embodiment, the window lock device 81 of the second embodiment is used by fixing the hook 83 and the receiving hook 82 to the inner and outer screens, respectively (not shown here, but the same as the inner and outer screens 2 and 3 shown in Figure 1(a) of the first embodiment).

[0104] The receiving bracket 82 is fixed to the inner surface of the upper frame 12 (see FIG. 9) of the outer shoji screen 3 as in the first embodiment, so it will not be described here in particular. The hanging bracket 83 in the second embodiment has a feature that is not present in the first embodiment in that it is fixed to the vertical frame 100 of the inner shoji screen, so it will be described below.

[0105] As in the first embodiment, the hanging bracket 83 is used to fix the side wall 110 of the lid 106 (corresponding to the right side wall of the case 86) to the side surface 101 of the vertical frame 100 of the inner screen (the frame shown by the dotted line in Figure 8) using double-sided tape, adhesive, screws, or other means (not shown).

[0106] In the second embodiment, the outer wall 89 of the main body 87 is made wider laterally than the inner wall 88, as shown in Figures 6(a) and 8, so that the part of the outer wall 89 which is wider than the inner wall 88 can be fixed to the outer surface 102 of the vertical frame 100 of the inner screen via double-sided tape, adhesive, etc. (see Figures 8(a) and (b)).

[0107] As a result, when the hanging bracket 83 is fixed to the side surface 101 of the vertical frame 100 of the inner shoji screen, a portion of the outer wall 89 of the main body 87 can also be fixed to the outer surface 102 of the vertical frame 100, thereby improving the fixing strength of the hanging bracket 83 to the vertical frame 100.

[0108] 8(c) is a diagram showing a modified example of the second embodiment, showing a configuration in which an optional reinforcing plate 130 is attached to the hanging bracket 83. This reinforcing plate 130 is formed in an L-shape in a plan view with a side portion 131 that abuts against the side wall 90 of the main body 87 and an inner surface portion 132 that fits along the inner wall 88 of the main body 87 (it just fits along, but does not necessarily have to abut against it). Long holes 133 are formed horizontally on the top and bottom of the side portion 131.

[0109] As shown in Figure 8 (c), the reinforcing plate 130 is adjusted so as to abut against the inner surface 103 of the vertical frame 100 in accordance with the inward and outward width of the side surface 101 of the vertical frame 100, and after adjustment, the screw 134 is passed through the long hole 133 and fixed to the side wall 90 of the main body 87 (corresponding to the left wall of the case 86) with the screw 134.

[0110] By using the reinforcing plate 130, when fixing the case 86 of the hanging bracket 83 to the side surface 101 of the vertical frame 100 of the inner screen, it is possible to further fix the inner surface 132 of the reinforcing plate 130 to the inner surface 103 of the vertical frame 100 of the inner screen via double-sided tape, adhesive, etc.

[0111] In this way, the reinforcing plate 130 reinforces the case 86 of the hanging bracket 83 itself, and when the hanging bracket 83 is fixed to the vertical frame 100 of the inner screen, the reinforcing plate 130 can be further abutted against the inner surface 103 of the vertical frame 100 of the inner screen to fix it.

[0112] As a result, the outer wall 89 of the main body 87 (corresponding to the outer wall of the case 86), the side wall 110 of the lid 106 (corresponding to the right side wall of the case 86), and the reinforcing plate 130 can securely surround the vertical frame 100 of the inner screen from three sides, thereby significantly improving the fixing strength of the hanging bracket 83 to the vertical frame 100 of the inner screen.

[0113] Effect: The operation of the window locking device 81 of the second embodiment configured as above will be described with reference to Figures 8 and 9. The operation of the window locking device 81 of the second embodiment is the same as that of the first embodiment.

[0114] That is, when the sliding window 1 is closed and locked by the window lock device 81, as shown in Figure 9 (a), the locking operating body 120 is biased outward by the spring 126, and the locking rod 122 is engaged with the engagement hole 84 of the receiving bracket 82.

[0115] To open the sliding window 1, as shown in Figure 9(b), simply pull the operating part 125 inward, pull the locking rod 122 out of the engagement hole 84 of the receiving metal fitting 82 to unlock it, and open the outer door 3. If the window lock device 81 is attached to the top end of the window, users other than small children can easily operate it to lock and unlock, and it is configured to lock automatically.

[0116] The window lock device 81 of the second embodiment, like that of the first embodiment, is configured to be attached in a position where a small child cannot reach the window even when using a chair or the like, and therefore the window cannot be opened without permission, thereby preventing the child from falling out of the window.

[0117] In addition, the window lock device can be easily installed on existing windows or doors as an auxiliary window lock device. It has a small number of parts, is easy to manufacture, and can be provided and obtained at a low price.

[0118] Not only can the lid 106 of the case 86 be fixed to the vertical frame 100 of the inner screen, but the outer wall 89 of the main body 87 can also be fixed to the vertical frame 100, making it possible to significantly improve the fixing strength of the hanging bracket 83 to the vertical frame 100 of the inner screen.

[0119] Furthermore, when the hanging fitting 83 is fixed to the vertical frame 100 of the inner screen, as in the modified example shown in FIG. 8(c), by attaching a reinforcing plate 130 as an option, it becomes possible to reinforce the case 86 itself.

[0120] Furthermore, by attaching the reinforcing plate 130, the vertical frame 100 of the inner screen can be fixed so as to surround it from three sides together with the outer wall 89 of the main body 87 and the side wall 110 of the lid 106, thereby further improving the fixing strength of the hanging bracket 83 to the vertical frame 100 of the inner screen.

[0121] In addition, in a configuration in which the window lock device 81 in Example 2 is applied to a sliding window 61 (see Figure 5), although not shown, similar to another usage example of Example 1, the hook 83 is attached to the upper end of the side of the vertical frame 66 that constitutes the opening frame 62 of the building in the sliding window 61, and the receiving bracket 82 is attached to the inner surface of the upper frame 64 of the sliding shoji screen 63.

[0122] Even in this case, in the window lock device 81 of Example 2, the outer wall 89 of the main body 87 of the case 86 is formed to be wider than the inner wall 88, so that the portion of the outer wall 89 which is wider than the inner wall 88 can be abutted against and fixed to the outer surface of the vertical frame 66 that constitutes the opening frame 62 of the building, thereby improving the fixing strength of the hanging bracket 83 to the vertical frame 66.

[0123] If a reinforcing plate 130 is attached as an option, the case 86 itself can be reinforced and the strength with which the hanging bracket 83 is fixed to the vertical frame 66 that constitutes the opening frame 62 of the building can be improved.

[0124] The above describes the form for implementing the window lock device of the present invention based on the embodiment, but it goes without saying that the present invention is not limited to such an embodiment, and various embodiments are possible within the scope of the technical matters described in the claims. [Industrial Applicability]

[0125] The window lock device of the present invention can be installed in a place out of reach of small children, is easy to operate, and has a great locking effect, so it can be applied to sliding windows, sliding doors, single sliding windows, single sliding doors, terrace windows, terrace doors, etc. in apartment buildings and is extremely useful as a locking device for them. [Explanation of symbols]

[0126] 1. Sliding windows 2. Inner Shoji Screen 3. Outside Shoji Screen 6 Window locking device 7 Hanging hardware 8 Bracket 9 Engagement hole of receiving bracket 10 Another engagement hole of the receiving bracket 11 Vertical frame of inner shoji screen 12 Upper frame of outer shoji screen 13 End of the receiving bracket on the sliding side 14 Side of the vertical frame of the inner shoji sliding door 15 Upper frame of inner shoji screen 16 cases 17 Operation locking body 18 Spring 19 Inside of the upper frame of the outer shoji screen 21 Case inner wall 22 Case Outer Wall 23 Left side wall of case 24 Right side wall of the case 25 Case top wall 26 Bottom wall of case 27 Inner guide hole 29 Outer upper guide hole 30 Outer lower guide hole 35 Guide rod 36 Locking rod 37 Control lever 38 Connecting rod 39 Hook-shaped operating part 40 Knob-shaped operation unit 45 Case Body 46 Case Lid 50 Case Body Blanks 51 Upper edges of left and right side walls 52 Lower edges of left and right side walls 53 Side edge of top wall 54 Side edge of bottom wall 57 Lid Blank 60 Building Wall 61 Sliding window 62 Opening frame of a building for a single sliding window 63 Single sliding shoji 64 Upper frame of single sliding door 66 Vertical frame forming the opening frame of a building 67 Side of vertical frame of opening frame 81 Window locking device 82 Bracket 83 Hanging hardware 84 Engagement hole 86 cases 87 Main Body 88 Inner wall of the body 89 Outer wall of the main body 90 Body side wall 91 Top wall of the main body 92 Bottom wall of the main body 93 Case Body Blank 94 Inner guide hole slot 95 Outer upper guide hole slot 96 Outer upper guide hole slot 100 Vertical frame of inner shoji screen 101 Side of the vertical frame of the inner shoji screen 102 Outer surface of the vertical frame of the inner shoji screen 103 Inside of the vertical frame of the inner shoji screen 106 Lid 108 Inner wall of lid 109 Outer wall of the lid 110 Lid side wall 111 Lid Blank 112 Guide hole groove on inner wall of lid 113 Outer upper guide hole of outer wall of cover 114 Outer lower guide hole of outer wall of lid 120 Operation locking body 121 Joint rod (slender plate) 122 Locking rod 123 Guide rod 124 Operation rod 125 Knob-type operation unit 126 Spring (compression coil spring) 130 Reinforcement plate 131 Side of reinforcement plate 132 Inner surface of reinforcing plate 133 Reinforcement plate slot 134 Screw

Claims

1. A window lock device for locking a window, comprising a hook and a receiving bracket to which the hook can be engaged and disengaged, The hook includes a case, an operation locking body attached to the case, and a spring that biases the operation locking body toward the receiving metal fitting, An inner guide hole is formed in the inner wall of the case, and an outer upper guide hole and an outer lower guide hole are formed at the upper and lower positions of the outer wall of the case, respectively. The operation locking body has an integral locking rod, a guide rod, an operation rod and a connecting rod, the locking rod and the guide rod being inserted into the upper guide hole and the lower guide hole, respectively, and being supported slidably on the case; The connecting rod connects the locking rod, the guide rod, and the operating rod, The operating rod is inserted into the inner guide hole and slidably supported in the case, and an operating portion is provided at an end portion extending from the inner guide hole to the outside of the case, The receiving metal fitting is formed in a band shape, and an engagement hole is formed on at least one end side thereof, into which the outer end of the locking rod can be engaged and disengaged, This window lock device is characterized in that the hook is attached to the upper end of the vertical frame of the inner sash of the sliding window, and the receiving bracket is attached to the upper frame of the outer sash of the sliding window.

2. The window lock device according to claim 1, characterized in that the outer wall of the case is wider than the inner wall, and the part of the outer wall which is wider than the inner wall can be abutted against the outer surface of the vertical frame of the inner screen and fixed thereto.

3. 3. A window lock device as described in claim 1 or 2, characterized in that a reinforcing plate is fixed to the case, the reinforcing plate is arranged along the inner wall and is configured to be abutted against the inner surface of the vertical frame of the inner screen and fixed thereto.

4. A window lock device for locking a window, comprising a hook and a receiving bracket to which the hook can be engaged and disengaged, The hook includes a case, an operation locking body attached to the case, and a spring that biases the operation locking body toward the receiving metal fitting, An inner guide hole is formed in the inner wall of the case, and an outer upper guide hole and an outer lower guide hole are formed at the upper and lower positions of the outer wall of the case, respectively. The operation locking body has an integral locking rod, a guide rod, an operation rod and a connecting rod, the locking rod and the guide rod being inserted into the upper guide hole and the lower guide hole, respectively, and being supported slidably on the case; The connecting rod connects the locking rod, the guide rod, and the operating rod, The operating rod is inserted into the inner guide hole and slidably supported in the case, and an operating portion is provided at an end portion extending from the inner guide hole to the outside of the case, The receiving metal fitting is formed in a band shape, and an engagement hole is formed on at least one end side thereof, into which the outer end of the locking rod can be engaged and disengaged, This window lock device is characterized in that the hook is attached to the upper end of the vertical frame that constitutes the opening frame of the building for the single-sliding window, and the receiving bracket is attached to the upper frame of the single-sliding shoji screen of the single-sliding window.

5. The window lock device according to claim 4, characterized in that the outer wall of the case is formed to be wider than the inner wall, and the portion of the outer wall which is wider than the inner wall can be abutted and fixed to the outer surface of the vertical frame that constitutes the opening frame of the building for the single-sliding window.

6. A window lock device as described in claim 4 or 5, characterized in that a reinforcing plate is fixed to the case, the reinforcing plate is arranged along the inner wall and is configured to be abutted against and fixed to the inner surface of the vertical frame that constitutes the opening frame of the building in the single-sliding window.

7. 6. A window lock device according to claim 1, 2, 4 or 5, wherein the case comprises a body and a lid formed by pressing a metal sheet, the lid being attached to the body to form an integrated structure.

Images