JP7733933B2 - Window locking device - Google Patents

Description

The present invention relates to a window locking device for preventing children from falling out of a sliding window, preventing them from accidentally opening the window and leaning out of the window.

In recent years, there have been tragic accidents in which young children have unlocked apartment buildings, opened sliding windows without permission, and leaned out of the windows to fall.

Crescent locks, which involve a crescent-shaped rotating latch engaging with a catch attached to the inside of a sliding window frame, are a well-known means of locking windows.

A known crescent lock has a belt-shaped receiving bracket with two latching claws spaced apart along its length. The receiving bracket is attached to the vertical frame of the outer window sash and extends from the vertical sash frame along the inside of the window glass (see Patent Document 1).

Japanese Patent Application Publication No. 10-331501

The well-known crescent lock is a somewhat effective way to lock sliding windows to prevent small children from opening them without permission.

However, young children are more creative and have the ability to be more resourceful than adults think, so it is necessary to consider the possibility that they may use a chair or other object in the room to reach into the crescent lock, operate it, and open it.

For this reason, even if a crescent lock is installed on a sliding window, an additional device is required to lock the sliding window. For this reason, an additional auxiliary crescent lock could be installed, but with the same configuration, it would be meaningless.

A locking device that can be installed as an auxiliary measure to prevent small children from opening sliding windows without permission must meet at least the following requirements:
(1) The locking device can be easily and securely attached in a position where it is out of reach of a child 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 fold and install the door on an existing sliding door.
(4) It is configured so that users other than small children can easily operate it and it can be locked automatically.

The conventional crescent lock shown in Patent Document 1 has a belt-shaped receiving bracket with two latches spaced apart along the length, allowing for adjustment of the degree to which the sliding door is opened and maintained, but is essentially merely an improvement over the conventional crescent lock.

Since the band-shaped receiving bracket is configured 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 issues remain.
(1) The band-shaped brackets were attached to the inside of the glass of the outer window sash, which made it look unattractive from inside the room.
(2) If the band-shaped receiving bracket is installed on the inside of the glass of the outer window sash, it will be installed at a low position, so there is a possibility that a small child may use a chair or the like to grab it and release it.
(3) A configuration 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.

The present invention aims to solve the above-mentioned problems of the conventional technology by realizing a window locking device that can be easily attached to windows in buildings such as apartment buildings in a location out of reach of small children, has a simple structure, and can be manufactured and provided inexpensively.

In order to solve the above problems, the present invention provides a window lock device for locking a window, which is attached to one window frame of an openable window, and which is equipped with a lock mechanism mounted in a case and having a locking rod, and a receiving metal fitting attached to the other window frame to which the locking rod can be engaged and disengaged, and the lock mechanism is equipped with an operating rod, a locking rod, an operating member, an operating rod support shaft, and a compression coil spring, and the locking rod is fixed to the upper part of the operating rod, and the protruding shaft is fixed so as to protrude sideways, and an elongated hole is formed in the lower part of the operating rod, and The present invention provides a window lock device characterized in that the edge of the end abuts against the inner surface of the case, the operating rod support shaft passes through a long hole in the operating rod and is installed inside the case, the operating member integrally comprises a lever portion and a handle rod portion, the lever portion is rotatably attached to the protruding shaft of the operating rod and has a curved convex portion that abuts against the inner surface of the case, the handle rod portion is arranged to extend downward from the case, and a compression coil spring is arranged between the operating rod and the case to bias the operating rod.

In order to solve the above problems, the present invention provides a window lock device for locking a window, which is attached to one window frame of an openable window, and is equipped with a lock mechanism mounted in a case and having a locking rod, and a receiving fitting attached to the other window frame to which the locking rod can be engaged and disengaged, wherein the lock mechanism comprises an operating rod, a locking rod, an operating member, an operating rod support shaft, a compression coil spring, and a spring mounting shaft, the operating rod has the locking rod fixed to its upper end side perpendicular to the operating rod, a protruding shaft is fixed to the inner surface of the upper part of the operating rod so as to protrude laterally, an elongated hole is formed in the lower part of the operating rod, and the edge of the lower end of the operating rod abuts against the inner surface of the case, The operating rod support shaft passes through a long hole in the operating rod and is installed inside the case, the operating member has an upper lever portion and a lower handle rod portion as one unit, the upper end of the lever portion is rotatably attached to the protruding shaft of the operating rod, a curved convex portion is formed on the outer surface of the lower part of the lever portion that abuts against the inner surface of the case, the handle rod portion is arranged to extend downward from the case, one end of the spring mounting shaft is fixed to the operating rod and the other end is supported by the case, and a compression coil spring is wound around the outer periphery of the spring mounting shaft between the operating rod and the inner surface of the case to bias the operating rod.

The case comprises a case body and a case lid. The case body comprises a right side wall, outer wall, inner wall and bottom wall that are integral with each other and has a concave horizontal cross section. The case lid is placed over the case body and comprises a left side wall, outer wall, inner wall and top wall that are integral with each other and may also have a concave horizontal cross section.

A mounting member for a window frame, which has an inner mounting piece and an outer mounting piece, is abutted and fixed to the left wall surface of the case lid , and the inner mounting piece and the outer mounting piece each have an L-shaped horizontal cross section, with a horizontal long hole formed in one side and a round hole formed in the other side, and the inner mounting piece and outer mounting piece can be fixed to the case lid in a manner that allows the spacing between the inner mounting piece and the outer mounting piece to be adjusted by inserting a bolt into the long hole and the round hole and screwing it into the left wall surface of the case lid with them partially overlapping each other.

A lock prevention hole is formed in the left side wall of the case cover, and when an insertable lock prevention rod is inserted into this lock prevention hole, the lock prevention rod is positioned in the movement path of the operating rod, and the operating rod and the locking rod cannot move.

The window lock device according to the present invention provides the following effects.
(1) The window can be installed in a position where a small child cannot reach the window even when using a chair or the like.
(2) As a window locking device that can be attached as an auxiliary, 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 an after-market accessory.
(4) It is configured so that users other than small children can easily operate it and it can be locked automatically.

1 is a perspective view illustrating a state in which an embodiment of a window lock device according to the present invention is used. 4A and 4B are perspective views illustrating the case of the window lock device of the embodiment, in which FIG. 4A shows the case body and FIG. 4B shows the case cover. 1A and 1B are perspective views illustrating the window lock device of the above embodiment, in which (a) shows a configuration in which the lock mechanism is installed inside the case, (b) shows the state in which the mounting member is attached to the case lid, and (c) shows a plan view of the lock prevention rod and its X-X cross section. 5A and 5B are diagrams illustrating the operation of the window locking device of the embodiment, in which FIG. 5A shows a locked state and FIG. 5B shows an unlocked state. 1A and 1B are diagrams illustrating the operation of the window locking device of the above embodiment, in which (a) shows the state in which the locking rod is in contact with the surface of the receiving bracket attached to the frame of the outer glass, and (b) shows the state in which the lock prevention rod has been inserted to prevent the device from being locked.

The best mode for implementing the sliding window locking device of the present invention is described below based on an embodiment and with reference to the drawings.

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

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

In this embodiment, the window lock device 6 according to the present invention will be described with reference to Figures 1 to 5, primarily as applied to a sliding window 1 (which also includes "sliding doors").

In Figure 1, the inner shoji screen 2 (inner shoji screen) on the right and the outer shoji screen 3 (outer shoji screen) on the left are configured to be able to slide relative to each other, and can be opened and closed by sliding them relative to each other.

The window lock device 6 has an inner shoji screen 2 and an outer shoji screen 3, and is attached to a sliding window 1 that opens and closes by sliding the screen, for use in unlocking and locking.

The window lock device 6 includes a lock mechanism 10 (see Figure 3(a)) with a locking rod 11 mounted inside a case 7 as shown in Figure 1, and a receiving bracket 12 (see Figure 1) to which the locking rod 11 can be engaged and disengaged. Below, we will explain each of the main components of the window lock device 6.

case:
2(a) and 2(b), the case 7 comprises a case body 15 and a case lid 16. As shown in FIG. 2(a), the case body 15 integrally comprises a side wall 17 (corresponding to the right wall of the case 7), an outer wall 18, an inner wall 19, and a bottom wall 20, and has a concave horizontal cross section.

A vertically long slot 21 is formed at the upper end of the outer wall 18 of the case body 15. This slot 21 is intended for the outer end (locking end) of the locking rod 11, which will be described later, to pass through. Threaded holes 22 are formed near the upper and lower ends of the inner wall 19 of the case body 15, respectively, for screwing the case lid 16.

A vertically long slot 23 is formed in the approximate middle of the inner wall 19 of the case body 15. The inner end of the spring mounting shaft 44 is inserted through this slot 23, supporting it so that it can move vertically.

A screw insertion hole 24 is formed below the elongated hole 23 in the inner wall 19 of the case body 15. A bolt insertion hole 25 is formed in the lower part of the outer wall 18 of the case body 15, corresponding to the position of the screw insertion hole 24.

As will be described later, the operating rod support shaft 41 that supports the operating rod 40 is installed between the inner wall 19 and outer wall 18 of the case body 15. The through-hole 25 is used to insert the stud bolt 51 that constitutes the operating rod support shaft 41, and the screw insertion hole 24 is used to screw in the threaded tip of the stud bolt 51.

The case lid 16 is placed over the case body 15 from the side (left side) and functions as a lid to close the case body 15. As shown in Figure 2(b), it integrally comprises a side wall 30 (corresponding to the left wall of the case 7), an outer wall 31, an inner wall 32, and a top wall 33, and has a concave horizontal cross section.

Screw insertion holes 34 are formed on the upper and lower ends of the inner wall 32 of the case lid 16 at positions that correspond to the screw holes 22 on the upper and lower ends of the inner wall 19 of the case body 15. The upper and lower screw insertion holes 34 are used to insert screws (not shown) that secure the case lid 16 to the screw holes 22 in the case body 15.

A concave-shaped notch 35 is formed on the upper end of the outer wall 31 of the case lid 16. The locking rod 11 is inserted through this notch 35. A notch 36 is formed on the lower end of the outer wall 31 of the case lid 16. The stud bolt 51 of the operating rod support shaft 41 is inserted through this notch 36, exposing its head.

A notch 37 is formed in the vertical center of the inner wall 32 of the case lid 16, at a position corresponding to the elongated hole 23 in the case body 15. This notch faces the elongated hole 23 that tiltably supports the inner end of the spring mounting shaft 44 (described below), exposing the inner end of the spring mounting shaft 44.

Furthermore, a notch 38 is formed in the inner wall 32 of the case cover 16 below the notch 37. This notch 38 forms a space that exposes the inner end of the operating rod support shaft 41, which will be described later. It may also be a space for screwing a nut (not shown) onto the threaded portion of the inner end of the stud bolt 51.

Locking mechanism:
As shown in Figures 3 to 5, the locking mechanism 10 includes, as its main components, an operating rod 40, a locking rod 11, an operating rod support shaft 41, an operating member 42, a compression coil spring 43, and a spring mounting shaft 44.

The locking rod 11 is fixed to the upper end of the operating rod 40, perpendicular to the operating rod 40, and the two together form a cross shape. A protrusion 48 is fixed to the inner surface of the upper part of the operating rod 40 so that it protrudes to the side (towards the inside of the paper in Figure 4).

A long hole 49 extending vertically is formed in the lower part of the operating rod 40. The edge (outer edge) of the lower end of the operating rod 40 abuts against the inner surface of the outer wall 18 of the case body 15 at an abutment 77 (see Figures 3(b) to 5). As will be described later, the operating rod 40 can rotate around this abutment 77 as a fulcrum.

The operating rod support shaft 41 is inserted through the elongated hole 49 in the operating rod 40 to support the operating rod 40, and consists of a stud bolt 51 and a support tube 52 through which the stud bolt 51 is inserted.

The stud bolt 51 is inserted through the bolt insertion hole 25 in the case body 15 at the position of the notch 36 in the case lid 16, passes through the support tube 52, and is fixed by screwing it into the threaded hole 24 in the inner wall 19 of the case body 17. The threaded hole 24 faces the notch 38 in the inner wall 32 of the case lid 16.

As a result, the operating rod support shaft 41 is installed across the outer wall 18 and inner wall 19 of the case body 15. The operating rod support shaft 41 supports the locking rod 11 with its support tube 52 to prevent it from falling downward.

As shown in Figures 3 to 5, the operating member 42 integrally comprises an upper lever portion 53 and a lower handle rod portion 54, and is generally V-shaped in side view. The lever portion 53 has a ring portion 55 formed at its upper end. The ring portion 55 is rotatably fitted onto the protrusion 48 of the operating rod 40.

A curved convex portion 56 is formed on the outer surface of the lever portion 53. The curved convex portion 56 abuts against the inner surface of the outer wall 18 of the case body 15. The operating member 42 can rotate around the abutment portion 57 where the curved convex portion 56 abuts against the inner surface of the outer wall 18 of the case body 15. The handle rod portion 54 extends downward from the case, and a grip ball 58 is fixed to its lower end as a grip.

As shown in Figures 3 to 5, the outer end of the spring mounting shaft 44 is fixed to the inner surface of the operating rod 40, and its inner end passes through a spring abutment piece 45 provided on the inner surface of the inner wall 19 of the case body 15, and is further inserted and supported through a vertically elongated hole 23 formed in the inner wall 19 of the case body 15.

The compression coil spring 43 is wound around the outer periphery of the spring mounting shaft 44. The inner end of the compression coil spring 43 abuts against the inner surface of the operating rod 40, and the outer end abuts against the inner wall 19 of the case body 15 via the spring abutment piece 45.

As described above, the case lid 16 is placed from the side over the case body 15 on which the locking mechanism 10 is mounted, and screws are passed through the screw insertion holes 34 formed at the top and bottom of the inner wall 19 of the case lid 16 and then screwed into the screw holes 22 formed at the top and bottom of the case body 15, thereby enclosing the locking mechanism 10 within the case 7.

As shown in Figure 1, the window locking device 6 is attached to the vertical frame 61 of the inner glass 3 via a mounting member 60, using double-sided adhesive tape or the like. As shown in Figures 1 and 3(b), the mounting member 60 has an inner mounting piece 62 and an outer mounting piece 63, and is fixed in place by abutting against the outer surface of the case cover 16 of the window locking device 6, and is attached so as to clamp the vertical frame 61.

Specifically, the inner mounting piece 62 and the outer mounting piece 63 each have an L-shaped horizontal cross section, with a horizontal adjustment slot 64 formed in one of them (in this embodiment, the inner mounting piece 62), and a round hole (not shown) formed in the other.

The inner mounting piece 62 and outer mounting piece 63 are abutted against the outer surface of the case lid 16 with some of them overlapping, as shown in Figure 3(b). Then, the mounting bolt 66 is inserted through the adjustment elongated hole 64 and the round hole and screwed into the outer surface of the case lid 16.

As a result, the inner mounting piece 62 and the outer mounting piece 63 are fixed to the outer surface of the case lid 16 with the distance between them adjusted to match the width (inside-outside width) of the inner glass vertical frame 61.

The bracket 12 is a piece of thin, strip-shaped material made of a metal such as aluminum or plastic, to which the locking rod 11 of the window lock device 6 can be attached and detached. As shown in Figure 1, the bracket 12 is fixed to the inner surface of the upper frame 4 of the outer shoji screen 3 with double-sided adhesive tape 67 (or with screws), as shown in Figures 1, 4, and 5.

The thickness of the bracket 12 is smaller than the gap between the upper frame 4 of the outer shoji screen 3 and the upper frame 5 of the inner shoji screen 2, so that it does not get stuck (make contact) when the sliding window 1 is opened or closed, i.e., when the outer shoji screen 3 is opened relative to the inner shoji screen 2. Specifically, the thickness of the bracket 12 is, for example, approximately 2 to 3 mm.

As shown in Figure 1, the receiving bracket 12 has an engagement hole 70 formed at least on the end on the sliding side, into which the outer end of the locking rod 11 can engage. Furthermore, the receiving bracket 12 may be configured with one or more engagement holes 70 formed at intervals along its length (see Figure 1).

As shown in Figure 2(a), a lock prevention rod insertion hole 71 is formed in the side wall 30 of the case lid 16. In addition, a lock prevention rod insertion hole 72 is also formed in each of the inner mounting piece 62 and the outer mounting piece 63.

These lock prevention rod insertion holes 72 are formed in positions that align with the lock prevention rod insertion holes 71 in the case lid 16 when the inner mounting piece 62 and outer mounting piece 63 are attached to the case lid 16.

This allows the lock prevention rod 74 to be inserted into the lock mechanism 10 from the outside. Figure 5(b) shows the state in which the lock prevention rod 74 has been inserted into the lock mechanism 10 from the outside. When the lock prevention rod 74 is inserted into the lock mechanism 10, it is inserted between the operating rod 40 and the outer wall 18 of the case body 15.

In other words, the lock prevention rod 74 is inserted into the movement path of the operating rod 40. As a result, even though the operating rod 40 is biased by the compression coil spring 43, its movement is restricted by the lock prevention rod 74. As a result, the locking rod 11 cannot protrude sufficiently from the receiving bracket 12 side, and therefore cannot be locked.

(effect)
The operation of the window lock device 6 having the above configuration will be described below.

As mentioned above, the receiving bracket 12 of the window lock device 6 is fixed to the inner surface of the upper frame 4 of the outer shoji screen 3 with double-sided adhesive tape 67, as shown in Figure 1. When fixing the receiving bracket 12, it is fixed in a position where the locking rod 11 can be inserted into the engagement hole 70.

When attaching the locking mechanism 10 of the window locking device 6 to the upper end of the vertical frame 61 of the inner shoji screen 2, as described above, the mounting member 60 is attached to the case 7, and the locking mechanism 10 is then attached to the upper end of the vertical frame 61 of the inner shoji screen 2 via this mounting member 60.

When attaching the mounting member 60 to the case, the inner mounting piece 62 and the outer mounting piece 63 are adjusted to overlap inward and outward in accordance with the width of the vertical frame 61 of the inner shoji screen 2, and then secured to the side wall 30 of the case lid 16 with mounting bolts 66 (see Figures 1 and 3).

The locking mechanism 10 operates as follows: When the handle 54 is not being held in its natural position, the force of the compression coil spring 43 presses the operating rod 40 against the inner surface of the outer wall 18 of the case body 15, as shown in Figure 4(a).

In this state, when the outer shoji screen 3 is closed, the locking rod 11 protrudes outward from the case body 15 and engages with the engagement hole 70 of the receiving bracket 12, locking the window. This prevents the sliding window 1 from opening. This prevents small children from opening the window, preventing them from falling out of the window.

When an adult opens the sliding window 1, as shown in Figure 4(b), they pull the handle 54 in the direction of arrow A against the biasing force of the compression coil spring 43. This causes the operating member 42 and actuating rod 40 to rotate in the directions of arrows B and C, respectively.

As a result, the locking mechanism 10 changes from the state shown in Figure 4(a) to the state shown in Figure 4(b). As a result, the locking rod 11 is pulled toward the inside of the case 7 and removed from the engagement hole 70 of the receiving bracket 12, as shown in Figure 4(b).

As a result, the sliding window 1 is unlocked and can be opened. By pulling the handle 54 in the direction of arrow A and opening the outer screen 3, the window can be fully opened.

Furthermore, when the handle rod portion 54 is pulled in the direction of arrow A to unlock the door, and the outer screen 3 begins to open before the handle rod portion 54 is released, the compression coil spring 43 urges the operating member 42 and actuating rod 40 to rotate in directions B' and C', respectively, as shown in Figure 5(a), and they attempt to return to the state shown in Figure 4(a).

However, as shown in Figure 5(a), when the locking rod 11 is removed from the engagement hole 70 of the receiving bracket 12, it abuts against the surface of the receiving bracket 12, restricting its rotation, and therefore it slides against the surface of the receiving bracket 12.

In this case, if the receiving bracket 12 has only one engagement hole 70 at its end, the outer screen 3 can be fully opened by opening it. However, as shown in Figure 1, if there are engagement holes 70 at other locations besides the end, the locking rod 11 will engage from the engagement hole 70 at the end from which it was pulled out into the next engagement hole 70, and the outer screen 3 will be locked in a half-open position.

The window lock device 6 of the present invention can also be attached to the top of terrace doors (sliding doors used to access balconies). The purpose is to prevent accidents such as small children opening terrace doors on their own, stepping out onto the balcony, and falling off the balcony.

In the case of a terrace door, if an adult unlocks the window lock device 6, opens the terrace door, steps out onto the balcony, and then closes the terrace door, the locking rod 11 of the window lock device 6 engages with the receiving bracket 12, automatically locking the door and preventing the adult from returning inside the room.

To prevent such problems, the window locking device 6 of the present invention can be configured so that the door will not automatically lock when the lock prevention rod 74 is inserted into the locking mechanism 10 through the lock prevention insertion holes 72 and 71 of the window locking device 6 during times when adults are entering or exiting the terrace door.

In other words, when the lock prevention rod 74 is inserted into the lock prevention insertion hole 72, as shown in Figure 5(b), even if the compression coil spring 43 urges the operating member 42 and the operating rod 40 to rotate in directions B' and C', respectively, the lock prevention rod 74 restricts the movement of the operating rod 40.

As a result, the locking rod 11 cannot protrude far enough outward and does not engage with the engagement hole 70 of the receiving bracket 12, preventing the door from being locked. This prevents the above-mentioned problem of the door automatically becoming locked and being unable to return to the room.

In addition, during times when adults are not entering or exiting the terrace door, the window lock device 6 can automatically lock the door without using the lock prevention rod 74, and the handle rod portion 54 can be operated to unlock it as needed.

Features of the present invention:
The lock mechanism 10 of the window lock device 6 according to the present invention will now be described, along with its unique and unprecedented structure and operation.

With the locking mechanism 10 in the state shown in Figure 4(a), when the handle rod portion 54 of the operating member 42 is pulled against the biasing force of the compression coil spring 43 as shown by arrow A in Figure 4(b), the lever portion 53 of the operating member 42 rotates as shown by arrow B around the abutment portion 57 because its curved protrusion 56 abuts against the inner surface of the outer wall 18 of the case body 15.

Then, because the ring portion 55 formed at the upper end of the lever portion 53 is rotatably fitted onto the protrusion 48 of the operating rod 40, the operating rod 40 rotates as shown by arrow C, centering on the abutment portion 77 between the edge of its lower end and the inner surface of the outer wall 18 of the case body 15. As the operating rod 40 rotates, the locking rod 11 is pulled inward toward the case, unlocking it.

In this way, the operating member 42 utilizes the principle of a lever, with the curved convex portion 56 of the lever portion 53 and the abutment portion 56 on the inner surface of the outer wall 18 of the case body 15 serving as a fulcrum. Therefore, only a small force is required to operate the operating handle rod portion 54 against the biasing force of the compression coil spring 43.

Usually, in the mechanisms of mechanical devices, a complex configuration is required, such as providing a support shaft to pivotally attach the lever to the fulcrum of the lever. However, the locking mechanism 10 of the present invention does not require such a complex configuration, resulting in a simple and streamlined structure that is less prone to malfunctions and other problems, and is also cost-effective.

Furthermore, the operating rod 40, which rotates in conjunction with the operating member 42, rotates around the abutment point 77 where the edge of its lower end contacts the inner surface of the outer wall 18 of the case body 15 as a fulcrum. As such, like the operating member 42, there is no need for a complex structure such as a pivot shaft for pivoting. This results in a simple and elegant structure that is less prone to malfunctions and other problems, and is also cost-effective.

The above describes the window lock device according to the present invention based on an embodiment, but it goes without saying that the present invention is not limited to such an embodiment, and various other embodiments are possible within the scope of the technical matters set forth in the claims.

The window locking device of the present invention can be installed in a location out of reach of small children, is easy to operate, and has a strong locking effect, making it suitable for use on sliding windows, sliding doors, single sliding windows, single sliding doors, terrace windows, terrace doors, etc. in apartment buildings and other buildings, and extremely useful as a locking device for these.

1. Sliding window
2. Inner Shoji Screen
3 Outer shoji 4 Upper frame of outer shoji 5 Upper frame of inner shoji
6. Window locking device
7 Cases
10 Locking mechanism
11 Locking rod
12 Bracket
15 Case body
16 Case lid
17 Side wall of case body
18. Outer wall of case body
19 Inner wall of case body
20 Bottom wall of case body
21 Long hole in the outer wall of the case body
22 Screw holes on the inner wall of the case body
23 Long hole in the inner wall of the case body
24 Screw hole for operating rod support shaft on inner wall of case body
25 Bolt hole for operating rod support shaft on outer wall of case body
30 Side wall of case lid
31 outer wall of case lid
32 Inner wall of case lid
33 Top wall of case lid
34 Screw insertion hole of case cover
35 Notch for inserting the locking rod of the case cover 36 Notch on the outer wall of the case cover facing the bolt for the operating rod support shaft 37 Notch on the inner wall of the case cover facing the spring mounting shaft 38 Notch on the inner wall of the case cover facing the bolt for the operating rod support shaft
40 Operating rod
41 Operating rod support shaft
42 Operating member
43 Compression coil spring
44 Spring mounting shaft
45 Spring contact piece
48 Protrusion of operating rod
49 Slot of operating rod
51 Stud bolt for operating rod support shaft
52 Support cylinder of operating rod support shaft
53 Lever portion of operating member
54 Handle rod portion of operating member
55 Lever ring
56 Curved convex portion of lever portion
57 Contact portion between the curved convex portion of the lever portion and the case lid
58 Handlebar grip ball
60 Mounting member
61 Inner glass vertical frame
62 Inner mounting piece of mounting member
63 Outer mounting piece of mounting member
64 Adjustment slot of inner mounting piece
66 Mounting bolts for mounting members
67 Double-sided adhesive tape
70 Engagement hole of receiving bracket
71 Case lid lock prevention rod insertion hole
72 Lock prevention rod insertion hole of mounting member
74 Lock prevention rod
77 Abutment portion between the edge of the lower end of the operating rod and the inner surface of the outer wall of the case body

Claims (5)

A window locking device for locking a window, comprising: a lock mechanism attached to one window frame of an openable window, mounted in a case, and having a locking rod; and a receiving metal fitting attached to the other window frame, to which the locking rod can be engaged and disengaged;
The locking mechanism includes an operating rod, a locking rod, an operating member, an operating rod support shaft, and a compression coil spring.
A locking rod is fixed to the upper part of the operating rod, and a protruding shaft is fixed so as to protrude laterally. A long hole is formed in the lower part of the operating rod, and the edge of the lower end of the operating rod abuts against the inner surface of the case.
The operating rod support shaft passes through the long hole in the operating rod and is installed inside the case.
The operating member is integrally provided with a lever portion and a handle portion, the lever portion is rotatably attached to the protruding shaft of the operating rod, and has a curved convex portion that abuts against the inner surface of the case, and the handle portion is provided to extend downward from the case,
A window lock device characterized in that the compression coil spring is arranged between the operating rod and the case to bias the operating rod. A window locking device for locking a window, comprising: a lock mechanism attached to one window frame of an openable window, mounted in a case, and having a locking rod; and a receiving bracket attached to the other window frame, with which the locking rod can be engaged and disengaged;
The locking mechanism includes an operating rod, a locking rod, an operating member, an operating rod support shaft, a compression coil spring, and a spring mounting shaft,
The operating rod has a locking rod fixed to its upper end side perpendicular to the operating rod, a protruding shaft fixed to the inner surface of the upper part of the operating rod so as to protrude laterally, a long hole formed in the lower part of the operating rod, and the edge of the lower end of the operating rod abutting against the inner surface of the case,
The operating rod support shaft passes through the long hole in the operating rod and is installed inside the case.
The operating member is integrally provided with an upper lever portion and a lower handle rod portion, the upper end of the lever portion is rotatably attached to the protruding shaft of the operating rod, a curved convex portion is formed on the outer surface of the lower portion of the lever portion and abuts against the inner surface of the case, and the handle rod portion is provided to extend downward from the case,
The spring-mounted shaft has one end fixed to the operating rod and the other end supported by the case.
A window lock device characterized in that the compression coil spring is wound around the outer periphery of the spring mounting shaft between the operating rod and the inner surface of the case, and is configured to bias the operating rod. The case includes a case body and a case cover, and the case body is integrally formed with a right side wall, an outer wall, an inner wall, and a bottom wall, and has a concave horizontal cross section.
3. The window lock device according to claim 2, wherein the case cover is fitted onto the case body, and is integrally provided with a left side wall, an outer wall, an inner wall and a top wall, and has a concave horizontal cross section. 4. The window lock device according to claim 3, wherein a mounting member for a window frame having an inner mounting piece and an outer mounting piece is abutted against and fixed to the left wall surface of the case cover , and the inner mounting piece and the outer mounting piece each have an L-shaped horizontal cross section, with a horizontal elongated hole formed in one side and a circular hole formed in the other side, and when they are partially overlapped with each other, a bolt is inserted through the elongated hole and the circular hole and screwed into the left wall surface of the case cover, whereby the inner mounting piece and the outer mounting piece are fixed to the case cover in an adjustable manner. A window lock device as described in claim 3 or 4, characterized in that a lock prevention hole is formed in the left wall of the case cover, and when an insertable lock prevention rod is inserted into this lock prevention hole, the lock prevention rod is positioned in the movement path of the operating rod, and the operating rod and the engaging rod cannot move.