Protective device to prevent children from accidentally falling off windowsills

Abstract

The utility model relates to the technical field of safety devices, and in particular to a protective device for preventing children from accidentally falling off a window sill. The utility model comprises a card plate A, a card plate B, a screw rod, a driving assembly and a locking mechanism. The card plate A is connected to a U-shaped frame, and the opening of the U-shaped frame faces the card plate A. A slider connected to the U-shaped frame is provided between two parallel straight rods. The card plate B is connected to the sliding rod, and each sliding rod is respectively inserted into the corresponding side straight rod of the U-shaped frame and slides therewith, and the sliding rod is connected to the sliding rod. The screw rod passes through the sliding rod and is spirally connected therewith, and the screw rod is rotationally connected to the card plate A and the U-shaped frame. The driving assembly is connected to the U-shaped frame and drives the connecting screw rod. The locking mechanism connects the driving assembly and the screw rod, so that the screw rod is rotationally locked by the locking mechanism after the rotation of the driving screw rod is stopped. The utility model can be applied to window frames of different widths, and can be added or reduced for window frame door openings of different heights, and installation is time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of safety devices, in particular to a protective device for preventing children from accidentally falling off a windowsill. Background Art

[0002] At present, most building structures do not have anti-theft windows. If the original structure lacks anti-theft windows, it is difficult to install them later and the cost is high. Most families do not consider installing anti-theft windows. Therefore, in the absence of anti-theft windows, children are very likely to fall from the windows. In order to avoid such accidents, a set of safety protection devices needs to be installed to prevent children from falling.

[0003] A Chinese patent with authorization announcement number CN211623103U discloses a household casement window that prevents children from falling. When the window is opened, the protective net will form two semi-overlapping fan-shaped protective structures through the pulling of the window. When the window is closed, the protective net will shrink to the inside of the placement groove, which reasonably prevents children from falling through the window. The device has a simple structure and can be used as soon as the window is opened, which ensures that the window can be used normally while having high safety, thereby improving the rationality and safety of the device.

[0004] However, the device still has some shortcomings: the device is difficult to install, and when installing it on window frames of different sizes, different sizes of the device need to be selected, which has poor applicability. At the same time, after the device opens the window sash, there is still a gap between the two window sashes that is easy for children to pass through. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a protective device to prevent children from accidentally falling off a windowsill.

[0006] The technical solution of the utility model is a protective device for preventing children from accidentally falling off a windowsill, comprising a card board A, the card board A is connected to a U-shaped frame, and the opening of the U-shaped frame faces the card board A, and a sliding block slidably connected to two mutually parallel straight rods of the U-shaped frame is arranged between the two straight rods.

[0007] The card plate B is connected to the sliding rods, each sliding rod is respectively inserted into the corresponding side straight rod of the U-shaped frame and slides therewith, and the sliding rod is connected to the sliding block.

[0008] The screw rod passes through the slider and is spirally connected with the slider. The screw rod is rotatably connected with the clamping plate A and the U-shaped frame.

[0009] A driving assembly is connected to the U-shaped frame and drives the connecting screw rod.

[0010] And a locking mechanism, which connects the driving assembly and the screw rod, so as to lock the screw rod's rotation through the locking mechanism after the screw rod is stopped from rotating.

[0011] Preferably, a slide groove A is provided in the cardboard A, and a through hole is provided on the side of the cardboard A away from the U-shaped frame. A movable plate A is provided in the slide groove A and is slidably connected to the cardboard A. A protrusion is provided on the movable plate A, and the protrusion is located inside the through hole and is slidably connected thereto. A roller rotatably connected thereto is provided on the protrusion. A tensioning assembly A is provided in the slide groove A, and the tensioning assembly A includes a spring A, and the two ends of the spring A are respectively in contact with the inner wall of the slide groove A and the movable plate A. The structures of the cardboard A and the cardboard B are the same.

[0012] Preferably, flexible anti-skid pads are provided at the ends of the card board A and the card board B that are away from each other.

[0013] Preferably, sliding channels are provided in the two straight rods of the U-shaped frame, and each sliding rod is located in the corresponding side sliding channel and is slidably connected to its inner wall. A transverse groove is provided on the side where the two straight rods are close to each other, and the two ends of the slider are respectively inserted into the sliding channel along the corresponding side transverse groove and connected to the sliding rod.

[0014] Preferably, the driving assembly comprises a driving rod, the driving rod drives the connecting screw rod, and the outer end of the driving rod is provided with a tool adapting groove.

[0015] Preferably, the locking mechanism includes a worm and a worm wheel, the worm is connected to the drive rod and is rotationally connected to the U-shaped frame, the worm wheel is connected to the lead screw and is rotationally connected to the U-shaped frame, and the worm and the worm wheel are meshed.

[0016] Preferably, it also includes a movable plate B, which is connected to the insertion rod. A slide groove B is set in the U-shaped frame, and the movable plate B and the insertion rod are both located in the slide groove B and slidably connected thereto, and a plurality of slots are set around the axis of the screw rod at the end thereof, and the insertion rod is inserted into the corresponding side slot and slidably connected thereto. A tensioning assembly B is set in the slide groove B for keeping the insertion rod inserted into the slot.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] By setting a connection structure between the U-shaped frame and the card board A, the card board B and the slide rod, the device can be applied to window frames of different widths, thereby improving its scope of application. In addition, the device can be matched in multiple groups and can be deleted according to the height of the window frame. At the same time, the utility model is simple and convenient to operate during actual installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection structure between the card board A and the card board B;

[0021] Figure 3 It is a schematic diagram of the connection structure of various components on the card board A;

[0022] Figure 4 Schematic diagram of the connection structure between the lead screw and the drive rod.

[0023] Figure numerals: 1, window frame; 2, window sash; 3, pallet A; 31, movable plate A; 32, roller; 4, U-shaped frame; 5, sliding rod; 6, pallet B; 7, slider; 8, screw rod; 801, slot; 9, driving rod; 10, worm; 11, worm wheel; 12, movable plate B; 13, plug rod. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] like Figure 1-Figure 4 As shown, the protective device for preventing children from accidentally falling off the windowsill proposed by the utility model comprises a window frame 1, a window sash 2, a cardboard A3, a cardboard B6, a screw rod 8, a driving assembly and a locking mechanism. The cardboard A3 is connected to the U-shaped frame 4, and the opening of the U-shaped frame 4 faces the cardboard A3. A slider 7 slidably connected to the U-shaped frame 4 is arranged between two parallel straight rods. A slide groove A is arranged in the cardboard A3, and a through hole is arranged on the side of the cardboard A3 away from the U-shaped frame 4. A movable plate A31 slidably connected to the cardboard A3 is arranged in the slide groove A, and a protrusion is arranged on the movable plate A31. The protrusion is located inside the through hole and slidably connected to the through hole, and a roller 32 rotatably connected to the protrusion is arranged on the protrusion. A tensioning assembly A is arranged in the slide groove A, and the tensioning assembly A comprises a spring A. The two ends of the spring A are respectively in contact with the inner wall of the slide groove A and the movable plate A31. The cardboard A3 has the same structure as the cardboard B6. The card plate B6 is connected to the slide bar 5, each slide bar 5 is inserted into the corresponding side straight bar of the U-shaped frame 4 and slides therewith, and the slide bar 5 is connected to the slider 7. The window sash 2 is located in the window frame 1 and slides therewith, and the card plate A3 and the card plate B6 are both located on the inner side of the window frame and connected therewith. A flexible anti-skid pad is provided at one end of the card plate A3 and the card plate B6 that are away from each other. A sliding channel is provided in the two straight bars of the U-shaped frame 4, each slide bar 5 is respectively located in the corresponding side sliding channel and is slidably connected with its inner wall, and a transverse groove is provided on one side where the two straight bars are close to each other, and the two ends of the slider 7 are respectively inserted into the sliding channel along the corresponding side transverse groove and connected with the slide bar 5. The screw rod 8 passes through the slider 7 and is spirally connected therewith, and the screw rod 8 is rotationally connected to the card plate A3 and the U-shaped frame 4. The driving assembly is connected to the U-shaped frame 4 and drives the connecting screw rod 8. The driving assembly includes a driving rod 9, which drives the connecting screw rod 8, and a tool adapter groove is provided at the outer end of the driving rod 9. The locking mechanism connects the driving assembly and the screw 8, so that the screw 8 is locked by the locking mechanism after the screw 8 is stopped from rotating. The locking mechanism includes a worm 10 and a worm wheel 11, the worm 10 is connected to the driving rod 9 and is rotatably connected to the U-shaped frame 4, the worm wheel 11 is connected to the screw 8 and is rotatably connected to the U-shaped frame 4, and the worm 10 and the worm wheel 11 are meshed.

[0026] In this embodiment, the card plates A3 and B6 can be selected to respectively contact the inner walls on both sides of the window frame 1, which makes the installation of the sliding window simpler. It is only necessary to contact the card plates A3 and B6 of the device to respectively contact the edge of the window sash 2 in the open state and the inner wall of the window frame 1.

[0027] During actual installation, the device is placed in the installation position, and then the drive rod 9 is rotated by using the sleeve (not limited to the sleeve). The drive rod 9 rotates and then drives the worm 10 to rotate, and then drives the worm wheel 11 and the screw rod 8 to rotate. At this time, the screw rod 8 drives the slider 7 and the slide rod 5 to slide relative to the U-shaped frame 4, and the spacing between the card plate A3 and the card plate B6 changes. After the card plate A3 and the card plate B6 are respectively pressed against the corresponding side structures, the roller 32 shrinks into the movable plate, and the flexible anti-skid pad is pressed against the structural member. At this time, the entire device is fixed, and the installation of other groups of the device can be completed in sequence according to needs. Since the screw rod 8 is restricted by the cooperation of the worm wheel and worm, it will not rotate freely. The upper and lower groups of the device protect the opening of the window frame 1 to effectively prevent children from falling from the windowsill.

[0028] Embodiment 2

[0029] like Figure 2-Figure 4 As shown, the protective device for preventing children from accidentally falling off the windowsill proposed by the utility model, compared with the first embodiment, further includes a movable plate B12, and the movable plate B12 is connected to the plug rod 13. A slide groove B is set in the U-shaped frame 4, and the movable plate B12 and the plug rod 13 are both located in the slide groove B and slidably connected thereto, and a plurality of slots 801 are set around the axis of the end of the screw rod 8, and the plug rod 13 is inserted into the corresponding side slot 801 and slidably connected thereto. A tensioning component B for keeping the plug rod 13 inserted into the slot 801 is set in the slide groove B, and the tensioning component B includes a spring B.

[0030] In this embodiment, children are studious and curious. If they find a tool, they can use the tool to rotate the drive rod 9 and then remove the device. After the insertion rod 13 and the slot 801 are installed, even if they find the tool, since the insertion rod 13 maintains the rotation lock of the screw rod 8 under the structural limit of the tensioning component B, the child needs to press down the movable plate B12 first, and the child’s strength is insufficient to cause the spring B to contract, especially under the premise of rotating the drive rod 9 to complete two sets of actions, which effectively prevents the child from rotating the screw rod 8.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A protective device to prevent children from accidentally falling off a windowsill, characterized in that: include A card plate A (3), the card plate A (3) is connected to a U-shaped frame (4), and the opening of the U-shaped frame (4) faces the card plate A (3), and a sliding block (7) slidably connected to two mutually parallel straight rods of the U-shaped frame (4) is provided between the two straight rods; A card plate B (6), the card plate B (6) is connected to the slide bars (5), each slide bar (5) is respectively inserted into the corresponding side straight bar of the U-shaped frame (4) and slides therewith, and the slide bar (5) is connected to the slider (7); A screw rod (8), the screw rod (8) passes through the slider (7) and is spirally connected thereto, and the screw rod (8) is rotatably connected to the clamping plate A (3) and the U-shaped frame (4); A driving assembly, the driving assembly is connected to the U-shaped frame (4) and drives the connecting screw rod (8); And a locking mechanism, which connects the driving assembly and the screw rod (8) so as to lock the screw rod (8) in rotation through the locking mechanism after the screw rod (8) is stopped from rotating.

2. The protective device for preventing children from accidentally falling off the windowsill according to claim 1, characterized in that: A slide groove A is arranged in the card plate A (3), and a through hole is arranged on a side of the card plate A (3) away from the U-shaped frame (4); a movable plate A (31) slidably connected to the card plate A (3) is arranged in the slide groove A, a convex block is arranged on the movable plate A (31), the convex block is located inside the through hole and slidably connected to the through hole, and a roller (32) rotatably connected to the convex block is arranged on the convex block; a tensioning assembly A is arranged in the slide groove A, and the tensioning assembly A includes a spring A, and two ends of the spring A are respectively in contact with the inner wall of the slide groove A and the movable plate A (31), and the card plate A (3) has the same structure as the card plate B (6).

3. The protective device for preventing children from accidentally falling off the windowsill according to claim 1, characterized in that: Flexible anti-skid pads are provided at the ends of the card plate A (3) and the card plate B (6) that are away from each other.

4. The protective device for preventing children from accidentally falling off the windowsill according to claim 1, characterized in that: Sliding channels are arranged in the two straight rods of the U-shaped frame (4), and each sliding rod (5) is located in the corresponding side sliding channel and is slidably connected to the inner wall thereof. A transverse groove is arranged on the side where the two straight rods are close to each other, and the two ends of the sliding block (7) are respectively inserted into the sliding channel along the corresponding side transverse groove and connected to the sliding rod (5).

5. The protective device for preventing children from accidentally falling off the windowsill according to claim 1, characterized in that: The driving assembly comprises a driving rod (9), the driving rod (9) drives the connecting screw rod (8), and a tool adapting groove is arranged at the outer end of the driving rod (9).

6. The protective device for preventing children from accidentally falling off the windowsill according to claim 1, characterized in that: The locking mechanism comprises a worm (10) and a worm wheel (11); the worm (10) is connected to the driving rod (9) and is rotationally connected to the U-shaped frame (4); the worm wheel (11) is connected to the lead screw (8) and is rotationally connected to the U-shaped frame (4); and the worm (10) and the worm wheel (11) are meshed.

7. The protective device for preventing children from accidentally falling off the windowsill according to claim 1, characterized in that: The invention also comprises a movable plate B (12), wherein the movable plate B (12) is connected to the insertion rod (13); a slide groove B is arranged in the U-shaped frame (4), wherein the movable plate B (12) and the insertion rod (13) are both located in the slide groove B and are slidably connected thereto, and a plurality of slots (801) are arranged around the axis of the end of the screw rod (8), wherein the insertion rod (13) is inserted into the corresponding side slots (801) and is slidably connected thereto; and a tensioning assembly B is arranged in the slide groove B for keeping the insertion rod (13) inserted into the slots (801).

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