A safety device for windows

Abstract

This invention discloses a safety device for windows, comprising: a locking seat with an entry groove and a limiting groove in the first direction; a mounting base; a rotating structure with its rotation axis parallel to the first direction and rotatably connected to the mounting base; and a locking pin fixedly connected to one end of the rotating structure, comprising a pin body and a limiting enlargement head. The width of the pin body in the first direction is less than the width of the limiting groove, and the limiting enlargement head is located at the end of the pin body away from the rotating structure, with the width of the limiting enlargement head in the first direction being greater than the width of the limiting groove. This device prevents the locking pin from suddenly disengaging from the limiting groove, which could cause a sudden increase in the downward angle of the window sash and lead to an accident.

Description

Technical Field

[0001] This invention relates to the field of door and window accessories technology, and in particular to a safety device for windows. Background Technology

[0002] Currently, casement windows are widely used in the market, but during use, there is a risk that the window sash may come loose due to human error or external factors, posing a safety hazard of children or the window sash falling. In certain usage environments, casement windows need to have a safety device to eliminate this hazard.

[0003] Common safety devices for casement windows and bottom-hung windows only lock the window sash in place. However, existing technology includes installation devices for casement windows and bottom-hung windows, consisting of a lock base with a rectangular through-hole and a rotating shaft with a locking pin mounted on the window sash. The width of the rectangular through-hole is larger than the width of the locking pin. When limiting the opening, the user rotates the shaft, causing the locking pin to rotate around the shaft into the rectangular through-hole, thus limiting the opening and bottom-hung angle of the window sash. However, existing safety devices only limit the rotation angle of the bottom-hung window and lack a safety structure to prevent accidental lifting and disengagement. Therefore, existing safety devices pose a risk of disengagement due to misoperation when the window sash is in the bottom-hung state. Furthermore, over time, the locking pin in existing safety devices can bend and deform due to force. When the bending deformation is severe, the original limiting function for bottom-hung windows may fail. If this failure occurs while the device is in operation, it can cause a sudden increase in the bottom-hung angle, creating a safety hazard. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a safety device for windows, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this invention is:

[0006] A safety device for a window, comprising a first direction, the safety device including:

[0007] A locking seat, wherein the locking seat is provided with an entry groove and a limiting groove, the entry groove is connected to the limiting groove, and the width of the entry groove in a first direction is greater than the width of the limiting groove in the first direction;

[0008] Mounting base;

[0009] A rotating structure, wherein the axis of rotation of the rotating structure is parallel to a first direction, and the rotating structure is rotatably connected to the mounting base;

[0010] A locking pin is fixedly connected to one end of the rotating structure. The locking pin includes a pin body and a limiting enlarged head. The width of the pin body in a first direction is smaller than the width of the limiting groove. The limiting enlarged head is disposed at the end of the pin body away from the rotating structure. The width of the limiting enlarged head in the first direction is greater than the width of the limiting groove in the first direction.

[0011] With the above technical solution, since the maximum width of the locking pin in the first direction is less than the width of the limiting groove, the locking pin has a certain angle of movement in the limiting groove. When the locking pin abuts against the side wall of the limiting groove in the first direction, the bottom-hung window is in the maximum rotation angle state, maintaining the bottom-hung opening function of the window sash. This not only prevents children from falling from the window, but also allows for indoor ventilation and air exchange, keeping the indoor air fresh.

[0012] Because the diameter of the limiting expansion head is larger than the width of the limiting groove in the first direction, the limiting expansion head is limited by the locking seat when the locking pin moves upward. This prevents the window sash from being lifted and disengaged due to misoperation when the window sash is in the down-hanging state, effectively improving the safety performance of this safety device.

[0013] Over time, the locking pin will inevitably bend and deform. When the locking pin deforms due to long-term stress, it is easy for the locking pin to come out of the limiting groove. Since the diameter of the limiting expansion head is larger than the width of the limiting groove in the first direction, and a stepped structure is formed between the limiting expansion head and the locking pin, the limiting expansion head can abut against the wall of the lock seat. At this time, the limiting expansion head can effectively prevent the locking pin from coming out of the limiting groove due to bending deformation, thereby preventing the locking pin from suddenly coming out of the limiting groove and causing the window sash to suddenly increase in the downward angle, which could lead to an accident.

[0014] As a further improvement to the above technical solution, the inlet groove and the limiting groove are smoothly transitioned by a rounded chamfer.

[0015] With the above technical solution, the entry groove and the limiting groove are smoothly transitioned by rounded chamfers, so that the pin body is not easily worn due to sharp edges during the process of moving from the entry groove to the limiting groove, which is conducive to improving the service life of the safety device.

[0016] As a further improvement to the above technical solution, the locking seat is rotatably connected with a screw, one end of which is connected to a threaded hole on the locking plate.

[0017] With the above technical solution, when the operator rotates the screw with a tool, the locking plate will first rotate. Once the locking plate abuts against the side wall of the sash frame hardware mounting groove, the screw continues to rotate. Because the rotation of the locking plate is restricted by the side wall of the sash frame hardware mounting groove, the threaded structure of the locking plate and the screw causes the locking plate to gradually move upwards, eventually abutting against the top wall of the door / window hardware mounting groove. This fixes the strike plate to the door / window hardware mounting groove. The threaded connection between the screw and the locking plate provides greater locking force between the locking plate and the window frame, making the strike plate installation more secure. Compared to the previous method of fixing by drilling screws, this solution allows for easy disassembly and adjustment of the strike plate's position and reduces damage to the door / window during installation.

[0018] As a further improvement to the above technical solution, the locking plate is provided with a proximal portion and a distal portion, and the distance from the proximal portion to the rotation axis of the locking plate is less than the distance from the distal portion to the rotation axis of the locking plate.

[0019] As a further improvement to the above technical solution, the locking piece has a rectangular sheet structure.

[0020] As a further improvement to the above technical solution, the locking piece has arc-shaped notches at two opposite corners.

[0021] Through the above technical solution, the arc-shaped notch can prevent the locking piece from scratching the side wall of the mounting groove of the aluminum profile due to its many sharp edges. Furthermore, the outer circumference of the locking piece at the arc-shaped notch can adapt to mounting grooves of different widths, ensuring that the locking piece can abut against the side wall of the mounting groove. In addition, setting the arc-shaped notch helps to increase the contact area between the locking piece and the mounting groove, reduce pressure, and effectively reduce damage to the profile.

[0022] As a further improvement to the above technical solution, the rotating structure is threadedly connected with a shaft locking pin, the locking pin is provided with a shaft locking groove, and the tail end of the shaft locking pin abuts against the bottom of the shaft locking groove.

[0023] As a further improvement to the above technical solution, the mounting base is provided with a mounting groove and a limiting slot, the limiting slot being connected to the mounting groove; one end of the rotating structure is provided with a limiting piece, the limiting piece being rotatably connected to the mounting groove, the limiting piece being provided with a limiting angle, the limiting angle being engaged with the limiting slot.

[0024] Through the above technical solution, the limiting angle and the limiting slot are engaged and connected, which can easily locate the relative position of the mounting base and the rotating structure.

[0025] The beneficial effect of this invention is that it can prevent the sudden disengagement of the locking pin from the limiting groove, which would cause the downward angle of the window sash to suddenly increase and lead to accidents.

[0026] This invention relates to the field of door and window fittings technology. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the exploded structure according to an embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the safety device after installation according to an embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional view of the safety device after installation according to an embodiment of the present invention;

[0032] Figure 5 This is an exploded structural diagram of the mounting base and rotating structure according to an embodiment of the present invention;

[0033] Figure 6 This is a partially enlarged schematic diagram of the mounting base and rotating structure after installation, according to an embodiment of the present invention.

[0034] In the diagram, 100 is the locking seat; 110 is the support structure; 120 is the locking structure; 121 is the entry groove; 122 is the limiting groove; 130 is the screw; 140 is the locking piece; 141 is the near-axis part; 142 is the far-axis part; 143 is the arc-shaped notch; 200 is the mounting base; 210 is the mounting groove; 220 is the limiting slot; 300 is the rotating structure; 310 is the limiting piece; 311 is the limiting angle; 320 is the shaft locking pin; 400 is the locking pin; 410 is the limiting enlarged head; 420 is the shaft locking groove; 430 is the pin body; and 500 is the washer. Detailed Implementation

[0035] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of the present invention. In addition, all the connection / linkage relationships mentioned in the text do not simply refer to the direct connection of components, but refer to the formation of a more optimal connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined interactively without conflicting with each other.

[0036] Referring to Figures 1 to 6 , a safety device for a window, having a first direction. The safety device for a window in this embodiment includes a lock catch base 100, a mounting base 200, a rotating structure 300 and a locking pin 400.

[0037] The lock catch base 100 is installed on the sash frame. The lock catch base 100 includes a support structure 110 and a lock catch structure 120. The number of the support structures 110 is set to two, and the two support structures 110 are respectively arranged at both ends of the lock catch structure 120. The two support structures 110 and the lock catch structure 120 are integrally formed, so that the lock catch base 100 as a whole presents a "C" - shaped structure, and the opening of the lock catch base 100 faces the outside of the sash frame.

[0038] The lock catch base 100 is provided with an access slot 121 and a limiting slot 122, and the access slot 121 and the limiting slot 122 are connected. The width of the access slot 121 in the first direction is greater than the width of the limiting slot 122 in the first direction. A circular chamfer is provided at the connection of the access slot 121 and the limiting slot 122, so that the access slot 121 and the limiting slot 122 can be smoothly transitioned.

[0039] One end of the lock catch base 100 in its length direction is provided with a through - hole, and a screw 130 is rotatably connected to the through - hole. The screw 130 passes through the through - hole, and the tail end of the screw 130 extends into the "C" - shaped opening of the lock catch base 100, and a lock piece 140 is threadedly connected to the tail end of the screw 130.

[0040] The lock piece 140 has a proximal shaft portion 141 and a distal shaft portion 142. Specifically, the lock piece 140 in this embodiment is set as a rectangular sheet - like structure. The proximal shaft portion of this embodiment is set as the long side of the lock piece 140, and the distal shaft portion 142 is set as the short side of the lock piece 140, so that the proximal shaft portion 141 is closer to the rotation axis of the lock piece 140 than the distal shaft portion 142. In other embodiments, the lock piece 140 can be set as an elliptical sheet - like structure, etc., and the proximal shaft portion 141 and the distal shaft portion 142 respectively correspond to the long axis end and the short axis end of the lock piece 140, or can also be set as other sheet - like structures having a proximal shaft portion 141 and a distal shaft portion 142.

[0041] Two opposite corners of the locking plate 140 are provided with arc-shaped notches 143. The arc-shaped notches 143 serve as a clearance mechanism, preventing the sharp corners of the locking plate 140 from scratching the sidewall of the mounting groove of the aluminum profile. Furthermore, the outer circumferential surface of the locking plate 140 at the arc-shaped notches 143 can adapt to mounting grooves of different widths, ensuring that the locking plate 140 can abut against the sidewall of the mounting groove. In addition, the arc-shaped notches 143 help to increase the contact area between the locking plate 140 and the mounting groove, reduce pressure, and effectively reduce damage to the profile.

[0042] When the operator rotates screw 130 with a tool, it first causes locking plate 140 to rotate. Once locking plate 140 rotates to abut against the side wall of the sash frame hardware mounting groove, the operator continues to rotate screw 130. Because the rotation of locking plate 140 is restricted by the side wall of the sash frame hardware mounting groove, the threaded structure of locking plate 140 and screw 130 causes locking plate 140 to gradually move upwards, eventually abutting against the top wall of the door / window hardware mounting groove. This fixes the strike plate 100 to the door / window hardware mounting groove. The threaded connection between screw 130 and locking plate 140 provides greater locking force between locking plate 140 and the window frame, making the installation of strike plate 100 more secure. Compared to the previous method of fixing by drilling screws, this solution reduces damage to doors and windows during strike plate 100 installation.

[0043] The mounting base 200 has nuts at both ends, and is fixed to the window sash by screws and nuts. The mounting base 200 has limiting slots 220 and mounting grooves 210. The mounting groove 210 is a circular groove structure. There are four limiting slots 220 arranged in a circumferential array around the central axis of the mounting groove 210. The mounting base 200 is connected to a gasket 500, which seals the mounting groove 210.

[0044] The rotating structure 300 is mounted on the window sash and is rotatably connected to the mounting base 200 and the window sash. The rotation axis of the rotating structure 300 is parallel to the first direction. One end of the rotating structure 300 is provided with a limiting piece 310, which is a square plate structure with four limiting angles 311. Each of the four limiting angles 311 corresponds to a limiting slot 220. The limiting piece 310 is located within the mounting groove 210 and is rotatably connected to it. The limiting angles 311 of the limiting piece 310 engage with the limiting slots 220 of the mounting base 200, enabling simple positioning.

[0045] One end of the rotating structure 300 is provided with a hexagonal wrench groove (in other embodiments, the wrench groove may also be a cross-shaped or straight-line structure), allowing the operator to drive the rotating structure 300 to rotate using a hexagonal wrench. The end of the rotating structure 300 away from the mounting base 200 is provided with a through hole through which the locking pin 400 passes. The end of the rotating structure 300 away from the mounting base 200 is threadedly connected to a shaft locking pin 320, which extends into the through hole. The locking pin 400 is provided with a shaft locking groove 420, which is an annular groove structure with a trapezoidal cross-section. The tail end of the shaft locking pin 320 is positioned within the shaft locking groove 420, and the tail end of the shaft locking pin 320 tightly abuts against the bottom of the shaft locking groove 420 to secure the rotating structure 300 and the locking pin 400.

[0046] The locking pin 400 includes a pin body 430 and a limiting enlargement head 410. The pin body 430 is a cylindrical member, and its diameter is smaller than the width of the limiting groove 122 in the first direction. In other embodiments, the pin body 430 may be a square columnar member or a polygonal columnar structure, etc., and the maximum width of the pin body 430 in the first direction must be smaller than the width of the limiting groove 122. The limiting enlargement head 410 is disposed at the end of the pin body 430 away from the rotating structure 300. The pin body 430 is fixedly connected to the limiting enlargement head 410. The limiting enlargement head 410 is a disc-shaped structure (in other embodiments, it may also be a square disc-shaped structure or other polygonal disc-shaped structures, etc.). The diameter of the limiting enlargement head 410 is larger than the width of the limiting groove 122 in the first direction, and the diameter of the limiting enlargement head 410 is smaller than the width of the entry groove 121 in the first direction.

[0047] When it is necessary to limit the angle of the bottom-hung window, the operator drives the rotating part to rotate using a hex wrench, which in turn drives the locking pin 400 to rotate. During the rotation of the locking pin 400, it first enters the entry groove 121 and then enters the limiting groove 122. After the locking pin 400 enters the limiting groove 122, the angle of the bottom-hung window can be limited, and the opening function is completely restricted.

[0048] Since the maximum width of the locking pin 400 in the first direction is less than the width of the limiting groove 122, the locking pin 400 has a certain angle of movement within the limiting groove 122. When the locking pin 400 abuts against the side wall of the limiting groove 122 in the first direction, the bottom-hung window is in the maximum rotation angle state, maintaining the bottom-hung opening function of the window sash. This not only prevents children from falling from the window, but also allows for indoor ventilation, keeping the indoor air fresh.

[0049] Because the diameter of the limiting expansion head 410 is larger than the width of the limiting groove 122 in the first direction, when the locking pin 400 moves upward, the limiting expansion head 410 is limited by the locking seat 100. This prevents the window sash from being lifted due to misoperation when it is in the down-hanging state, thus preventing it from disengaging and effectively improving the safety performance of this safety device.

[0050] Furthermore, with prolonged use, the locking pin 400 inevitably undergoes bending deformation. When the locking pin 400 deforms due to long-term stress, it is easy for it to disengage from the limiting groove 122. Since the diameter of the limiting expansion head 410 is larger than the width of the limiting groove 122 in the first direction, and a stepped structure is formed between the limiting expansion head 410 and the locking pin 400, the limiting expansion head 410 can abut against the wall of the latch seat 100. At this time, the limiting expansion head 410 can effectively prevent the locking pin 400 from disengaging from the limiting groove 122 due to bending deformation, thereby preventing the locking pin 400 from suddenly disengaging from the limiting groove 122 and causing a sudden increase in the downward angle of the window sash, which could lead to an accident.

[0051] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A safety device for windows, characterized in that: The safety device includes a first direction and comprises: The locking seat (100) is provided with an entry groove (121) and a limiting groove (122). The entry groove (121) is connected to the limiting groove (122). The width of the entry groove (121) in the first direction is greater than the width of the limiting groove (122) in the first direction. Mounting base (200); A rotating structure (300) has a rotation axis parallel to a first direction and is rotatably connected to the mounting base (200). A locking pin (400) is fixedly connected to one end of the rotating structure (300). The locking pin (400) includes a pin body (430) and a limiting enlarged head (410). The width of the pin body (430) in a first direction is smaller than the width of the limiting groove (122). The limiting enlarged head (410) is disposed at the end of the pin body (430) away from the rotating structure (300). The width of the limiting enlarged head (410) in the first direction is greater than the width of the limiting groove (122) in the first direction.

2. A safety device for a window according to claim 1, characterized in that: The inlet groove (121) and the limiting groove (122) are smoothly transitioned by rounded chamfers.

3. A safety device for a window according to claim 1, characterized in that: The latch seat (100) is rotatably connected to a screw (130), one end of which is connected to a threaded hole on the locking plate (140).

4. A safety device for a window according to claim 3, characterized in that: The locking plate (140) is provided with a proximal portion (141) and a distal portion (142), and the distance from the proximal portion (141) to the rotation axis of the locking plate (140) is less than the distance from the distal portion (142) to the rotation axis of the locking plate (140).

5. A safety device for a window according to claim 4, characterized in that: The locking piece (140) has a rectangular sheet structure.

6. A safety device for a window according to claim 5, characterized in that: The locking piece (140) has arc-shaped notches (143) at two opposite corners.

7. A safety device for a window according to claim 1, characterized in that: The rotating structure (300) is threadedly connected to a shaft locking pin (320), and the locking pin (400) is provided with a shaft locking groove (420). The tail end of the shaft locking pin (320) abuts against the bottom of the shaft locking groove (420).

8. A safety device for a window according to claim 1, characterized in that: The mounting base (200) is provided with a mounting groove (210) and a limiting groove (220), the limiting groove (220) being connected to the mounting groove (210); one end of the rotating structure (300) is provided with a limiting piece (310), the limiting piece (310) being rotatably connected to the mounting groove (210), the limiting piece (310) being provided with a limiting angle (311), the limiting angle (311) being engaged with the limiting groove (220).

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