A prefabricated adjustable window frame fixing device and a construction method thereof

Abstract

The application discloses a prefabricated adjustable window frame fixing device and a construction method thereof. The device comprises a lower supporting part, an upper supporting part and an adjusting assembly. The upper supporting part is adjustably arranged on the lower supporting part, and the adjusting assembly is used for adjusting the relative position of the lower supporting part and the upper supporting part. The lower supporting part comprises a wedge-shaped base, a lower sawtooth and a limiting protrusion. The upper supporting part comprises a wedge-shaped support, an upper sawtooth and a limiting groove. The adjusting assembly comprises a first adjusting arm, a second adjusting arm, a return spring, an adjusting screw, a supporting seat, an adjusting seat, a chuck and a supporting arm. When the adjusting screw is rotated, the first adjusting arm and the second adjusting arm are close to or away from the end. The method comprises outer window frame installation and height adjustment. The device has the advantages of height adjustment, stable support and convenient installation, and is simple and convenient to construct, low in cost and worthy of promotion and application.

Description

Technical Field

[0001] This invention relates to the field of building door and window installation technology, specifically to a prefabricated adjustable window frame fixing device and its construction method. Background Technology

[0002] During the installation of exterior windows, a gap typically exists between the window frame and the concrete window sill. This gap requires support and leveling using shims or pads to ensure the window's horizontal and vertical alignment, bear its own weight, and prevent frame sagging or deformation. Currently, conventional construction methods often use on-site cutting of stone, metal sheets, plastic blocks, or cement mortar shims for temporary support. However, these traditional methods present several technical challenges. Technical problem 1: Poor on-site processing precision: Stone, metal and plastic blocks are all cut by hand on-site, making it difficult to control the size accurately. The thickness and flatness of the blocks cannot be uniform, which can easily lead to uneven stress on the external window frame support, causing tilting and displacement problems, and affecting the installation quality of the external window. Technical problem two: Insufficient support stability: Ordinary pads rely solely on flat contact for support, without an interlocking and limiting structure. Under the weight of the window itself and subsequent construction disturbances, they are prone to slippage and detachment, causing the window frame to sink, which in turn leads to cracking and detachment of the plaster layer and decoration layer, resulting in high maintenance costs later. Technical problem three: Inconvenient height adjustment: Traditional pads have a fixed thickness, which makes it impossible to flexibly adjust the support height. This makes it difficult to adapt to installation conditions with different gap sizes, and replacing pads multiple times will greatly reduce construction efficiency. Technical issue four: environmental protection and construction pollution: on-site cutting of stone, metal and hard plastic will generate a lot of dust and scrap, forming construction waste and dust pollution, which does not meet the requirements of green construction; Technical problem five: Insufficient material durability: Ordinary plastic pads have poor mechanical properties and are prone to plastic deformation, aging and cracking when bearing the weight of the window for a long time. Metal pads are prone to corrosion, and stone pads are brittle and easily broken. None of them can provide stable support for a long time, which affects the safety and durability of the window.

[0003] Therefore, we developed a prefabricated, precision-controlled, height-adjustable, stable, environmentally friendly, and durable window frame fixing device to solve the technical problems of existing external window support pads, such as poor precision, difficulty in adjustment, easy slippage and deformation, high pollution, and insufficient durability. This device has significant practical engineering value. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated adjustable window frame fixing device and its construction method to solve the technical problems existing in the installation of window frames, such as poor on-site processing accuracy, insufficient support stability, inconvenient height adjustment, high pollution, and insufficient durability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable window frame fixing device based on prefabrication includes a lower support, an upper support, and an adjustment assembly. The upper support is adjustablely mounted on the lower support, and the adjustment assembly is used to adjust the relative position of the lower and upper support. The lower support includes a wedge-shaped base, a lower serration, and a limiting protrusion, with the limiting protrusion and the lower serration both fixedly mounted on the inclined surface of the wedge-shaped base. The upper support includes a wedge-shaped support, an upper serration, and a limiting groove, with the limiting groove and the upper serration both fixedly mounted on the inclined surface of the wedge-shaped support. The adjustment assembly includes a first adjustment arm, a second adjustment arm, a return spring, an adjustment screw, and a support. The system comprises a support, an adjusting seat, a chuck, and a support arm. The first and second adjusting arms are hinged together at one end. A support arm can be detachably mounted on the ends of both the first and second adjusting arms. The chuck is hinged to the support arm. The two ends of the return spring are respectively connected to the first and second adjusting arms. The support seat is mounted on the second adjusting arm, and the adjusting seat is hinged to the first adjusting arm. One end of the adjusting screw is threaded to the support seat, and the other end of the adjusting screw is rotatably connected to the adjusting seat. When the adjusting screw is rotated, the ends of the first and second adjusting arms move closer together or further apart.

[0006] Preferably, the cross-section of the limiting protrusion is trapezoidal; the cross-section of the limiting groove is adapted to the cross-section of the limiting protrusion.

[0007] Preferably, both the lower support and the upper support are made of PA66 material.

[0008] Preferably, an anti-slip layer is provided at the bottom of the lower support and at the top of the upper support.

[0009] Preferably, the anti-slip layer is in the form of a mesh.

[0010] Preferably, adjustment grooves are provided at the ends of both the wedge-shaped base and the wedge-shaped support.

[0011] Preferably, the chuck is installed in the adjustment groove, and rotating the adjustment screw adjusts the opening and closing of the ends of the first adjustment arm and the second adjustment arm.

[0012] Preferably, a connecting groove is provided on the end of both the first adjusting arm and the second adjusting arm, and a connecting protrusion is provided on the support arm. The connecting protrusion is inserted into the connecting groove and connected by a fastener.

[0013] A construction method based on a prefabricated adjustable window frame fixing device includes the following steps: Step 1: Install the outer window frame. Install the outer window frame on the concrete window sill, and then insert the combination of the lower support and the upper support into the space between the bottom of the outer window frame and the concrete window sill. Step 2: Height adjustment. Replace the support arm with one of the corresponding lengths. Insert the two clamps into the corresponding adjustment slots and turn the adjustment screw to bring the two clamps closer together. This will cause the upper support to move upward along the slope, placing the outer window frame against the top of the concrete window sill. Finally, use multiple anchor bolts to fix the outer window frame to the concrete window sill.

[0014] In this invention, both the lower support and the upper support are prefabricated in the factory, ensuring high dimensional accuracy and good consistency. This avoids dimensional deviations caused by manual cutting on site, ensuring uniform stress on the outer window frame and accurate positioning, and significantly improving the horizontal and verticality of the outer window installation.

[0015] The lower support uses a wedge-shaped bevel, and the trapezoidal limiting protrusion and limiting groove achieve precise guidance. The serrations on both sides interlock with each other, and with the mesh-like anti-slip layer, the anti-slip and anti-misalignment capabilities are greatly improved. It can stably support the heavy exterior windows, effectively prevent the window frame from sinking and deforming, and prevent the plaster and decoration layer from cracking and falling off.

[0016] The adjustable components allow for continuous and precise adjustment of the relative positions of the upper and lower supports, with flexible and controllable support height. This adapts to different installation gaps, eliminating the need for repeated replacement of pads, simplifying the construction process, and improving installation efficiency.

[0017] The entire device is prefabricated and can be directly assembled and used on site without the need for on-site cutting and processing, thus reducing dust pollution and construction waste at the source and meeting the requirements of green and civilized construction.

[0018] The main body is made of PA66 engineering plastic, which has excellent mechanical properties, wear resistance and corrosion resistance, high load-bearing capacity and strong resistance to creep deformation. It is not easy to age, crack or rust after long-term use. It can be used as a permanent support structure that does not need to be removed, ensuring the safety and structural stability of the exterior window for a long time.

[0019] The support arm adopts a detachable structure, and different lengths of support arms can be replaced according to the installation space and adjustment stroke, resulting in a wider adjustment range. It is suitable for different sizes of exterior windows and different window sill gaps, making it highly versatile.

[0020] In summary, this device effectively solves the technical problems existing in the installation of window frames, such as poor on-site processing accuracy, insufficient support stability, inconvenient height adjustment, high pollution, and insufficient durability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the overall structure of the present invention after installation. Figure 2This is a schematic diagram of the connection state between the lower support and the upper support of the present invention; Figure 3 This is a schematic diagram of the adjustment component structure of the present invention; In the diagram: 1. Lower support; 2. Upper support; 3. Adjustment assembly; 4. Anti-slip layer; 5. Adjustment groove; 6. Outer window frame; 7. Concrete structural window sill; 8. Anchor bolt; 10. Wedge-shaped base; 11. Lower serration; 12. Limiting protrusion; 20. Wedge-shaped support; 21. Upper serration; 22. Limiting groove; 30. First adjusting arm; 31. Second adjusting arm; 32. Return spring; 33. Adjusting screw; 34. Support seat; 35. Adjustment seat; 36. Clamp; 37. Support arm. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 , Figure 2 and Figure 3 The present invention relates to a prefabricated adjustable window frame fixing device, comprising a lower support 1, an upper support 2, and an adjustment component 3. The upper support 2 is adjustablely mounted on the lower support 1, and the adjustment component 3 is used to adjust the relative position between the lower support 1 and the upper support 2 to achieve height adjustment.

[0023] The lower support 1 includes a wedge-shaped base 10, a lower serration 11, and a limiting protrusion 12. The limiting protrusion 12 and the lower serration 11 are both fixedly disposed on the inclined surface of the wedge-shaped base 10. The limiting protrusion 12 is located at the middle position of the inclined surface of the wedge-shaped base 10, and the lower serration 11 is located on the inclined surface of the wedge-shaped base 10 and on both sides of the limiting protrusion 12.

[0024] The upper support 2 includes a wedge-shaped support 20, an upper serration 21, and a limiting groove 22. The limiting groove 22 and the upper serration 21 are both fixedly disposed on the inclined surface of the wedge-shaped support 20. The limiting groove 22 is located at the middle position of the inclined surface of the wedge-shaped support 20, and the upper serration 21 is located on the inclined surface of the wedge-shaped support 20 and on both sides of the limiting groove 22.

[0025] The limiting protrusion 12 has a trapezoidal cross-section; the limiting groove 22 has a cross-section that matches the limiting protrusion 12. The upper serration 21 and the lower serration 11 engage to achieve a stable connection between the lower support 1 and the upper support 2. Both the lower support 1 and the upper support 2 are made of PA66 material and are prefabricated in the factory to avoid the problems of poor precision and poor fixing effect caused by on-site processing. It also reduces the environmental dust and construction waste problems caused by on-site material cutting and processing. PA66 has excellent wear resistance and corrosion resistance, as well as excellent mechanical properties. It has both high tensile strength and good elastic modulus and is widely used in engineering plastic products. It has good load-bearing capacity for heavy exterior windows and can prevent the windows from sinking and deforming due to their own weight after installation.

[0026] An anti-slip layer 4 is provided at the bottom of the lower support part 1 and at the top of the upper support part 2. The anti-slip layer 4 is in the form of a grid. The design of the anti-slip layer 4 can prevent displacement and detachment that may occur during installation or when bearing the weight of the external window.

[0027] An adjustment groove 5 is provided at the end of both the wedge-shaped base 10 and the wedge-shaped support 20.

[0028] The adjustment assembly 3 includes a first adjustment arm 30, a second adjustment arm 31, a return spring 32, an adjustment screw 33, a support base 34, an adjustment seat 35, a chuck 36, and a support arm 37. One end of the first adjustment arm 30 and the second adjustment arm 31 are hinged together by a pin. The first adjustment arm 30 and the second adjustment arm 31 have the same shape, approximately L-shaped, and the hinge point is located at the corner of the arc.

[0029] A support arm 37 can be detachably installed on the ends of the first adjusting arm 30 and the second adjusting arm 31. A connecting groove is provided on the ends of the first adjusting arm 30 and the second adjusting arm 31. A connecting protrusion is provided on the support arm 37. The connecting protrusion is inserted into the connecting groove and connected by fasteners to achieve a detachable connection. In actual operation, support arms 37 of different lengths can be selected according to the relative position between the lower support part 1 and the upper support part 2.

[0030] A chuck 36 is hinged to the support arm 37. During operation, the chuck 36 is installed in the adjustment groove 5. When the adjustment screw 33 is rotated, the opening and closing control of the ends of the first adjustment arm 30 and the second adjustment arm 31 is realized.

[0031] The two ends of the return spring 32 are respectively connected to the first adjusting arm 30 and the second adjusting arm 31. Under normal conditions, the return spring 32 is in a stretched state, applying a pulling force to the first adjusting arm 30 and the second adjusting arm 31. When the adjusting screw 33 is not rotated, the first adjusting arm 30 and the second adjusting arm 31 can maintain their relative positional relationship.

[0032] The support base 34 is fixedly mounted on the second adjusting arm 31, and the adjusting base 35 is hinged to the first adjusting arm 30. One end of the adjusting screw 33 is threadedly connected to the support base 34, and the other end of the adjusting screw 33 is rotatably connected to the adjusting base 35. When the adjusting screw 33 is rotated, the ends of the first adjusting arm 30 and the second adjusting arm 31 move closer or further apart, thereby adjusting the distance between the two clamps 36, and thus adjusting the relative position between the lower support part 1 and the upper support part 2.

[0033] like Figure 1 , Figure 2 and Figure 3 The construction method shown is based on a prefabricated adjustable window frame fixing device, and includes the following steps: Step 1: Install the outer window frame 6. Install the outer window frame 6 onto the concrete structural window sill 7. Then, insert the assembly of the lower support part 1 and the upper support part 2 between the bottom of the outer window frame 6 and the concrete structural window sill 7. Manually adjust the initial height of the assembly so that the upper support part 2 contacts the bottom of the outer window frame 6. When the outer window frame 6 is long, multiple assemblies consisting of the lower support part 1 and the upper support part 2 can be used simultaneously. The assembly is designed to be non-removable, has good load-bearing capacity, and can prevent possible sinking of the window frame or even the entire outer window after installation, prevent deformation of the outer window, and prevent cracking and peeling of the plaster and decoration layer due to displacement of the outer window.

[0034] Step 2: Height Adjustment. Replace the support arm 37 with one of the corresponding length. Insert the two clamps 36 into the corresponding adjustment slots 5. Tighten the adjusting screw 33 to bring the two clamps 36 closer together, causing the upper support 2 to move upwards along the slope, pushing the outer window frame 6 against the top of the concrete structural window sill 7. After adjustment, finally use multiple anchor bolts 8 to fix the outer window frame 6 onto the concrete structural window sill 7. Foaming material can also be used to seal the gap between the outer window frame 6 and the concrete structural window sill 7.

[0035] The above embodiments are merely illustrative of the concept and implementation of the present invention and are not intended to limit it. Under the concept of the present invention, technical solutions without substantial changes are still within the scope of protection.

Claims

1. A prefabricated adjustable window frame fixing device, characterized in that: The system includes a lower support (1), an upper support (2), and an adjustment assembly (3). The upper support (2) is adjustablely mounted on the lower support (1). The adjustment assembly (3) is used to adjust the relative position of the lower support (1) and the upper support (2). The lower support (1) includes a wedge-shaped base (10), a lower serration (11), and a limiting protrusion (12). The limiting protrusion (12) and the lower serration (11) are both fixedly mounted on the inclined surface of the wedge-shaped base (10). The upper support (2) includes a wedge-shaped support (20), an upper serration (21), and a limiting groove (22). The limiting groove (22) and the upper serration (21) are both fixedly mounted on the inclined surface of the wedge-shaped support (20). The adjustment assembly (3) includes a first adjustment arm (30), a second adjustment arm (31), a return spring (32), an adjustment screw (33), a support seat (34), and an adjustment seat. (35), chuck (36) and support arm (37), the first adjusting arm (30) and the second adjusting arm (31) are hinged together at one end, and a support arm (37) can be detachably provided on the end of the first adjusting arm (30) and the second adjusting arm (31). The chuck (36) is hinged on the support arm (37). The two ends of the return spring (32) are respectively connected to the first adjusting arm (30) and the second adjusting arm (31). The support seat (34) is provided on the second adjusting arm (31). The adjusting seat (35) is hinged on the first adjusting arm (30). One end of the adjusting screw (33) is threaded to the support seat (34). The other end of the adjusting screw (33) is rotatably connected to the adjusting seat (35). When the adjusting screw (33) is rotated, the ends of the first adjusting arm (30) and the second adjusting arm (31) move closer or further away.

2. The adjustable window frame fixing device based on prefabrication as described in claim 1, characterized in that: The cross-section of the limiting protrusion (12) is trapezoidal; the cross-section of the limiting groove (22) is adapted to the cross-section of the limiting protrusion (12).

3. The adjustable window frame fixing device based on prefabrication according to claim 1 or 2, characterized in that: Both the lower support (1) and the upper support (2) are made of PA66 material.

4. The adjustable window frame fixing device based on prefabrication as described in claim 1, characterized in that: An anti-slip layer (4) is provided at the bottom of the lower support (1) and at the top of the upper support (2).

5. The adjustable window frame fixing device based on prefabrication according to claim 4, characterized in that: The anti-slip layer (4) is in the form of a grid.

6. The adjustable window frame fixing device based on prefabrication as described in claim 1, characterized in that: An adjustment groove (5) is provided at the ends of both the wedge-shaped base (10) and the wedge-shaped support (20).

7. The adjustable window frame fixing device based on prefabrication according to claim 6, characterized in that: The chuck (36) is installed in the adjustment groove (5). When the adjustment screw (33) is rotated, the opening and closing of the ends of the first adjustment arm (30) and the second adjustment arm (31) can be adjusted.

8. The adjustable window frame fixing device based on prefabrication according to claim 1, characterized in that: A connecting groove is provided on the end of both the first adjusting arm (30) and the second adjusting arm (31), and a connecting protrusion is provided on the support arm (37). The connecting protrusion is inserted into the connecting groove and connected by fasteners.

9. A construction method for a prefabricated adjustable window frame fixing device as described in any one of claims 1 to 8, characterized in that: Includes the following steps: Step 1: Install the outer window frame (6). Install the outer window frame (6) on the concrete structure window sill (7). Then insert the combination of the lower support part (1) and the upper support part (2) between the bottom of the outer window frame (6) and the concrete structure window sill (7). Step 2: Height adjustment. Replace the support arm (37) with the corresponding length, insert the two clamps (36) into the corresponding adjustment slots (5), and turn the adjustment screw (33) to bring the two clamps (36) closer together, so that the upper support (2) moves upward along the slope, and pushes the outer window frame (6) against the top of the concrete structure window sill (7). Finally, use multiple anchor bolts (8) to fix the outer window frame (6) on the concrete structure window sill (7).

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