Angle-limited limiting structure

Abstract

This invention relates to the field of door and window hinge technology, and more particularly to a limiting structure that can restrict angles. It includes a window frame, a window sash arranged on the window frame, and a foldable hinge assembly between the window sash and the window frame. A sliding groove is formed within the window frame along its width direction, and a sliding seat is slidably mounted in the sliding groove. The hinge assembly includes a connecting rod rotatably connected to the sliding seat. A limiting block for abutting the sliding seat is arranged within the sliding groove. The limiting block is provided with an installation assembly detachably connected to the sliding groove, and a compression groove is formed in the limiting block. The window sash is movably connected to the window frame. The opening angle of the window sash is adjusted by sliding the sliding seat along the sliding groove. After the window sash is closed to the desired angle, the limiting block is fixed in the sliding groove by the installation assembly. The compression groove gives the limiting block a certain degree of elasticity, allowing it to be more easily inserted into the sliding groove of the window frame. The limiting block can be easily removed and placed in the sliding groove with just a gentle pry, improving the ease of disassembly.

Description

Technical Field

[0001] This invention relates to the field of door and window hinge technology, and in particular to a limiting structure that can restrict angles. Background Technology

[0002] Most windows open at wide angles, making them susceptible to damage in strong winds. Inward-opening windows take up space in the room, and when closed, they can cause ventilation problems. Adding a limit block to the door and window hinges can control the opening angle from being too large, thus better protecting the window while still allowing it to breathe.

[0003] In public places such as hotels or hospitals, or in families with children, windows with pre-installed safety stops are often chosen to prevent children from climbing and falling. However, if safety stops are pre-installed on door and window hinges, it becomes more complicated to remove them if the window opening angle needs to be changed later. Summary of the Invention

[0004] The purpose of this invention is to provide a limiting structure that can restrict angles, addressing the shortcomings of existing technologies.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A limiting structure for restricting angles includes a window frame, a window sash arranged in the window frame, a foldable hinge assembly between the window sash and the window frame, a sliding groove formed in the window frame along its width direction, a sliding seat slidably mounted in the sliding groove, the hinge assembly including a connecting rod rotatably connected to the sliding seat, the sliding seat reciprocating along the sliding groove to adjust the opening angle of the window sash; a limiting block arranged in the sliding groove for abutting the sliding seat, the limiting block being provided with an installation assembly detachably connected to the sliding groove, and the limiting block being formed with an elastically deformable compression groove.

[0007] Furthermore: the limiting block includes a body block that is detachably mounted on the sliding groove, the body block being formed with an elastic block, and the gap between the body block and the elastic block being the compression groove.

[0008] Furthermore: there is a gap between one end of the elastic block and the elastic block.

[0009] Furthermore, the outer surface of the elastic block is formed with an arc-shaped protrusion that contacts the side wall of the sliding groove.

[0010] Furthermore: the mounting components include removable holes molded into the elastic block.

[0011] Furthermore, the cross-sectional shape of the disassembly hole can be square or rectangular.

[0012] Furthermore, the mounting assembly also includes a top positioning hole formed in the body block and a bottom positioning hole formed in the sliding groove, with a positioning screw detachably installed between the top positioning hole and the bottom positioning hole.

[0013] Furthermore: the sliding groove is formed with a limiting protrusion that can abut against one end of the limiting block.

[0014] Furthermore: the linkage is divided into the first linkage, the second linkage, and the third linkage.

[0015] Furthermore: the first link is movably installed between the window sash and the sliding groove, the second link is movably installed between the first link and the sliding seat, and the third link is movably installed between the window sash and the sliding seat.

[0016] The beneficial effects of this invention are as follows: The sash window is hinged to the window frame and is movably connected to the window frame via a connecting rod. The opening angle of the sash window is adjusted by sliding along the sliding groove via a sliding seat. When the sash window needs to be fixed, after closing the sash window to the required angle, the limiting block is fixed in the sliding groove by the mounting assembly. The compression groove formed by the limiting block gives the limiting block a certain elasticity, allowing the sliding seat to be elastically limited within the window frame, thereby controlling the opening angle of the window. The limiting block can be easily removed and placed in the sliding groove by simply prying it, improving the convenience of disassembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the limit block.

[0018] Figure 2 This is a schematic diagram of the structure when the limiting block separates from the base plate containing the groove.

[0019] Figure 3 This is a schematic diagram of the structure when the window sash and window frame are installed and unfolded.

[0020] Figure 4 A schematic diagram of the structure when the window sash is opened at a small angle.

[0021] Figure 5 A schematic diagram of the structure for installing a limit block when the window sash is opened to a small angle.

[0022] The reference numerals in the figures include:

[0023] 1-Window frame,

[0024] 10-Hinge assembly, 11-Window sash, 12-First link, 13-Second link, 14-Third link

[0025] 15-Sliding groove, 16-Base plate, 17-Sliding groove, 18-Baffle, 19-Stop seat,

[0026] 2-Limit block,

[0027] 20-Sliding seat, 21-Body block, 22-Elastic block, 23-Compression groove, 24-Arc-shaped protrusion,

[0028] 25 - Removal hole, 26 - Bottom positioning hole, 27 - Top positioning hole, 28 - Positioning screw

[0029] 29- Rotating shaft, 291- First connecting hole, 292- Second connecting hole, 293- Limiting protrusion. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings.

[0031] like Figure 1-5 As shown, a limiting structure for restricting angles includes a window frame 1, a window sash 11 arranged on the window frame 1, a foldable hinge assembly 10 disposed between the window sash 11 and the window frame 1, a sliding groove 15 formed in the window frame 1 along its width direction, a sliding seat 20 slidably mounted on the sliding groove 15, the hinge assembly 10 includes a connecting rod rotatably connected to the sliding seat 20, the sliding seat 20 reciprocates along the sliding groove 15 to adjust the opening angle of the window sash 11; the connecting rod is divided into a first connecting rod 12, a second connecting rod 13 and a third connecting rod 14.

[0032] The first link 12 is movably installed between the window sash 11 and the sliding groove 15. Both ends of the first link 12 are movably connected through the pivot 29, so that both ends of the first link 12 can rotate. The second link 13 is movably installed between the first link 12 and the sliding seat 20. Both ends of the second link 13 are movably connected through the pivot 29, so that both ends of the second link 13 can rotate. The third link 14 is movably installed between the window sash 11 and the sliding seat 20. Both ends of the third link 14 are movably connected through the pivot 29, so that both ends of the third link 14 can rotate.

[0033] Preferably, one end of the second link 13 is rotatably mounted on the middle end of the first link 12 via a pivot 29. When the sliding seat 20 slides along the sliding groove 15, the first link 12, the second link 13 and the third link 14 are unfolded or folded accordingly. The larger the unfolding angle, the larger the unfolding angle of the sash window; conversely, the smaller the unfolding angle of the first link 12, the second link 13 and the third link 14, the smaller the unfolding angle of the sash window.

[0034] The sliding groove 15 is fitted with a fixed base plate 16. The base plate 16 has a sliding groove 17 for the sliding seat 20 to slide. The sliding groove 17 has a first connecting hole 291 and a second connecting hole 292 for mounting the pivot 29 at the end of the first connecting rod 12. When the hinge assembly 10 is connected to the window sash 11, the corresponding first connecting hole 291 or second connecting hole 292 is selected. When the sliding seat 20 slides, it slides along the sliding groove 17 without damaging the sliding groove 15 of the window frame 1, effectively protecting the sliding groove 15. When the sliding groove 17 of the base plate 16 is damaged, it can be replaced.

[0035] A baffle 18 parallel to the sliding groove 15 is also formed inside the window frame 1 along its width direction. The baffle 18 is located at the edge of the sliding groove 15 and can be used to hold the window sash 11 in place. When the window sash 11 is closed, it will not move inward to the window frame 1.

[0036] The slide groove 17 of the base plate 16 is provided with a limiting block 2 for resisting the sliding seat 20. The other end of the slide groove 17 is provided with a stop seat 19. The limiting block 2 and the stop seat 19 resist the two ends of the sliding seat 20, so that the sliding seat 20 cannot continue to slide in the slide groove 17. This can control the opening angle to not be too large, which can not only better protect the safety of the window, but also allow the window to continue to have the function of ventilation.

[0037] The limiting block 2 is provided with an installation assembly that is detachably connected to the slide groove 17. The limiting block 2 is formed with a compression groove 23 that causes elastic deformation under force, allowing the limiting block 2 to be more easily inserted into the slide groove 17 of the window frame 1. The limiting block 2 includes a body block 21 that is detachably installed in the slide groove 17. The body block 21 is formed with an elastic block 22, and the gap between the body block 21 and the elastic block 22 is the compression groove 23. There is a gap between one end of the elastic block 22 and the elastic block 22.

[0038] In this embodiment, a compression groove 23 serves as a gap between the main body block 21 and the elastic block 22. The sliding seat 20 is positioned between the stop seat 19 and the limiting block 2. The force exerted by the elastic block 22 is in a different direction from the force that causes the window to open or close. Therefore, when the limiting block 2 is used to limit the opening angle of the window, the force-bearing surface of the window is smaller, ensuring the safety of the window. On the other hand, the requirements for the parts are also smaller. If the opening angle of the parts is too large, the component force in the direction of the window cracking will be large, making it unable to prevent sudden strong winds. On the other hand, the requirements for supporting parts will also be larger, and the parts will age faster.

[0039] The outer side of the elastic block 22 is formed with an arc-shaped protrusion 24 that contacts the side wall of the slide groove 17. The mounting assembly includes a disassembly hole 25 formed in the elastic block 22. When the limiting block 2 is disassembled using a tool, the tool can be inserted into the disassembly hole 25 as a pry point to remove the limiting block 2.

[0040] Preferably, the cross-sectional shape of the disassembly hole 25 can be square or rectangular.

[0041] The mounting components also include a top positioning hole 27 formed in the body block 21 and a bottom positioning hole 26 formed in the slide groove 17. A positioning screw 28 is detachably installed between the top positioning hole 27 and the bottom positioning hole 26. The positioning screw 28 can be locked after the elastic block 22 is engaged with the slide groove 17, providing double protection.

[0042] The slide groove 17 is formed with a limiting protrusion 293 that can abut against one end of the limiting block 2, so that the other end of the limiting block 2 is abutted by the limiting protrusion 293, which further improves the installation stability of the limiting block 2 in the slide groove 17 and makes it less likely to shift.

[0043] The limiting block 2 in this solution is used to insert into the sliding groove 17 of the window frame 1 to control the opening angle of the window sash 11. It is easy to put in and take out, and can more effectively play the role of the limiting block 2. When disassembly is required, first loosen the positioning screw 28 and take it out. Then, gently pry the elastic block 22 of the limiting block 2 to separate the limiting block 2 from the sliding groove 17, so as to achieve quick disassembly.

[0044] One embodiment, such as Figure 2 As shown, a limiting block 2 can be inserted into the sliding groove 17 of the window frame 1 and locked with positioning screws 28 to the top positioning hole 27 and the bottom positioning hole 26. Figure 3 As shown, a fully open window can be closed to a certain angle, such as... Figure 4 Place the limiting block 2 on the slide groove 17, gently pry open the disassembly hole 25 on the limiting block 2, and insert the limiting block 2 into the slide groove 17 of the window frame 1. After confirming that the direction is not reversed, align the top positioning hole 27 and the bottom positioning hole 26 and tighten the positioning screw 28. With one end of the limiting block 2 against the limiting protrusion 293, the opening angle of the window sash 11 will change from... Figure 3 The angle shown becomes Figure 5 The angle shown.

[0045] Conversely, if the limiting block 2 is removed, the positioning screw 28 is unscrewed using a screwdriver. Then, the elastic block 22 of the limiting block 2 is gently pried off to remove the limiting block 2. The opening angle of the window sash 11 will then change from... Figure 5 The angle shown becomes Figure 3 The angle shown.

[0046] In summary, the present invention possesses the excellent characteristics described above, which enhances its effectiveness in use compared to previous technologies, making it a highly practical product.

[0047] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A limiting structure for restricting angles, comprising a window frame, a window sash arranged on the window frame, a foldable hinge assembly provided between the window sash and the window frame, a sliding groove formed in the window frame along its width direction, a sliding seat slidably mounted on the sliding groove, the hinge assembly including a connecting rod rotatably connected to the sliding seat, the sliding seat reciprocating along the sliding groove to adjust the opening angle of the window sash. Its features are: The sliding groove is provided with a limiting block for abutting the sliding seat. The limiting block is provided with an installation component that is detachably connected to the sliding groove. The limiting block is formed with an elastically deformable compression groove. The limiting block includes a body block that is detachably installed in the sliding groove. The body block is formed with an elastic block. The outer side of the elastic block is formed with an arc-shaped protrusion that contacts the side wall of the sliding groove. The compression groove is not enclosed; The mounting assembly includes a disassembly hole formed in the elastic block.

2. The limiting structure for restricting angles according to claim 1, characterized in that: The gap between the body block and the elastic block is the compression groove.

3. The limiting structure for restricting angles according to claim 2, characterized in that: There is a gap between one end of the elastic block and the elastic block.

4. The limiting structure for restricting angles according to claim 1, characterized in that: The cross-sectional shape of the disassembly hole can be square or rectangular.

5. The limiting structure for restricting angles according to claim 4, characterized in that: The mounting assembly also includes a top positioning hole formed in the body block and a bottom positioning hole formed in the sliding groove, with a positioning screw detachably installed between the top positioning hole and the bottom positioning hole.

6. The limiting structure for restricting angles according to claim 5, characterized in that: The sliding groove is formed with a limiting protrusion that can abut against one end of the limiting block.

7. The limiting structure for restricting angles according to claim 1, characterized in that: The connecting rod is divided into a first connecting rod, a second connecting rod, and a third connecting rod.

8. The limiting structure for restricting angles according to claim 7, characterized in that: The first link is movably installed between the window sash and the sliding groove, the second link is movably installed between the first link and the sliding seat, and the third link is movably installed between the window sash and the sliding seat.

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