Roller assembly for sliding sash

Abstract

The utility model discloses a kind of roller assemblies for sliding sash, mainly related to the field of door and window hardware parts. Including wheel carrier, the wheel carrier includes two pieces of symmetrically arranged and horizontally extended side plates, the roller body is rotatably installed between the side plate, the bottom circumferential surface of the roller body protrudes the bottom side of side plate and is arranged, one end of the side plate is fixed with the mounting piece extending upwards, the bottom side of the mounting piece is higher than the bottom side of side plate, the mounting piece is between two side plates and perpendicular to side plate, fastener is penetrated and cooperated on the mounting piece. The utility model has the beneficial effects that: it can be conveniently installed, the support of window sash can be rolled at the bottom of window sash, solve the problems such as deformation sinking, opening and closing jam of window sash.

Description

Technical Field

[0001] This utility model relates to the field of door and window hardware, specifically a roller assembly for sliding window sashes. Background Technology

[0002] Early sliding windows, and some current aluminum-plastic doors and windows, have only a groove structure with a track groove at the bottom, or simple contact components such as plastic pads, metal strips, and sealing gaskets in the track groove. They can slide smoothly in the early stages of use, but as the time increases and the components age, the doors and windows commonly have the following problems: Plastic parts or metal strips may wear out or fall off due to repeated friction over a long period of time, resulting in high friction and noise, which can cause resistance when pushing or pulling. Deformation of the profiles and aging of the hardware cause the gap between the window sash and the track to narrow, resulting in the window sash sagging and causing it to become stuck when opening and closing. When the above problems occur, the window sash can be raised and supported by adding a roller assembly at the bottom to restore its sliding function. However, the existing roller assembly requires the window sash to be removed during installation, which is very inconvenient. In addition, the fasteners are in the groove for a long time, and the operating environment is dirty, harsh and humid, which makes them easy to be damaged and fall off again. Utility Model Content

[0003] The purpose of this utility model is to provide a roller assembly for sliding window sashes, which can be easily installed and provides rolling support for the window sash at the bottom, solving problems such as window sash deformation and sinking, and jamming during opening and closing.

[0004] To achieve the above objectives, this utility model employs the following technical solution: A roller assembly for a sliding window sash includes a roller frame, the roller frame including two symmetrically arranged and horizontally extending side plates, a roller body rotatably mounted between the side plates, the bottom circumferential surface of the roller body protruding from the bottom side of the side plates, an upwardly extending mounting piece fixed to one end of each side plate, the bottom side of the mounting piece being higher than the bottom side of the side plate, the mounting piece being located between the two side plates and perpendicular to the side plates, and a fastener being fitted through the mounting piece.

[0005] The mounting plate has a through mounting hole, and the fastener is provided through the mounting hole.

[0006] The mounting hole is a circular hole.

[0007] The mounting hole is a waist-shaped hole that extends in the same direction as the length of the mounting piece.

[0008] The roller body is coaxially permeated by an axle that is rotatably mounted to it based on a bearing, and the two ends of the axle are vertically fixed to a side plate on the same side.

[0009] The side plate has a connecting part at the end away from the mounting piece, and the two sides of the connecting part are respectively fixedly connected to one end of the side plate on the same side.

[0010] The connecting part extends in a straight line along the vertical distance between the two side plates.

[0011] The connecting part is a semi-circular arc-shaped metal sheet, and the upper end surface of the connecting part is flush with the top side of the side plate. The middle of the connecting part has a through hole, and the side of the connecting part has a baffle protruding towards the bottom.

[0012] The bottom side of the side plate near the connecting part has a chamfered structure.

[0013] The top of both sides of the mounting plate is provided with notch grooves.

[0014] The roller body has an annular groove with an arc-shaped cross-section in the center, and the annular groove is arranged around the circumference of the roller body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This roller assembly features a structural improvement, with mounting plates taking over the installation and fixing at both ends of the bottom side of the window sash. This eliminates the need to focus on the bottom side of the window for installation and fixation, shifting the main installation work to the sides. Operationally, the "lift and tighten" non-removable window sash installation method transforms traditional sliding friction into rolling friction within minutes. The roller + bearing structure directly supports the lowered window sash, eliminating jamming and noise caused by profile deformation and hardware aging. Pointed screws lock the bottom of the window sash from the side, avoiding the damp and dirty environment of the track groove, greatly reducing the risk of traditional rollers failing again due to fastener corrosion and loosening. Actual feedback shows that after installation, the pushing and pulling resistance is significantly reduced, and the operation is smooth and quiet. Even old window sashes can regain a new-like smooth feel. Furthermore, the components are wear-resistant and have a long lifespan, greatly reducing later maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of Example 1.

[0017] Figure 2 This is a schematic diagram of the installation status of Example 1.

[0018] Figure 3 This is a schematic diagram of Example 2.

[0019] Figure 4 This is a schematic diagram of Example 3.

[0020] Figure 5 This is a schematic diagram of Example 4.

[0021] Figure 6 This is a schematic diagram of the installation status of Example 4.

[0022] Figure 7 These are schematic diagrams of Examples 1-4.

[0023] The labels shown in the attached diagram: 1. Roller body; 2. Axle; 3. Side plate; 4. Mounting plate; 5. Annular groove; 6. Mounting hole; 7. Connecting part; 8. Adding hole; 9. Edge guard; 10. Notch groove; 11. Chamfer structure. Detailed Implementation

[0024] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0025] Example 1: Flat-head roller assembly (flat wheel) Includes wheel frame, roller body 1, and mounting plate 4.

[0026] Roller body 1: It adopts a nylon / metal wheel + bearing structure. The bearing is centrally mounted on the wheel axle 2, which is used to fix it to the wheel frame. The roller body 1 is a flat wheel that cooperates with the flat rail to change friction sliding into rolling sliding.

[0027] Wheel frame: Made of sheet metal and / or welded, the wheel frame includes two opposing side plates 3, which are basically rectangular and include a top side and a bottom side depending on the usage. The top side of the side plate 3 is used to contact the bottom of the track groove below the installed window sash. The side plates 3 are used to install the roller body 1, and the two ends of the wheel axle 2 are respectively fixed vertically on the side plates 3. The circumferential surface of the roller protrudes from the lower side of the side plate 3, so as to cooperate with the track below to achieve rolling. Rolling replaces sliding, so that the push and pull operation is not stuck and restores smoothness.

[0028] One end of the side plate 3 is provided with a connecting part 7, which is a crossbar structure with both ends fixed to the side plate 3 on the same side, to increase the structural strength of both ends of the wheel frame. The bottom side of the side plate 3 near the connecting part 7 is provided with a chamfer structure 11.

[0029] The other end of the side plate 3 is welded and fixed with a mounting piece 4. The mounting piece 4 is set perpendicular to the two side plates 3. The two sides of the mounting piece 4 are respectively welded and fixed to one end of the side plate 3. The bottom side of the mounting piece 4 is higher than the bottom side of the side plate 3. Two circular mounting holes 6 are provided through the mounting piece 4. Fasteners, which are pointed screws, are passed through the mounting holes 6. By tightening them into the mounting holes 6, the fasteners are fixed to the bottom of the side of the window sash.

[0030] Based on the above structure, the roller assembly is installed as follows: Install the roller assemblies at both ends of the modified window sash.

[0031] Raise the window sash to a suitable height (high enough to insert the wheel bracket). There is no need to remove the window sash. You can raise it manually or use tools (such as screwdrivers, chopsticks, etc., placed under the bottom of the window sash to keep it slightly raised).

[0032] With the mounting plate 4 vertical, insert the wheel bracket into the track groove on the lower side of the window sash. Position the top of the side plate 3 against the bottom of the track groove, and the mounting plate 4 against the side of the window sash. Use a screwdriver to install the fasteners into the mounting holes 6, tightening them to the bottom of the side of the window sash. This will fix the roller assembly to one end of the window sash. Repeat the same process on the other end.

[0033] The above operation is very simple. Simply lift and tighten to add a roller support structure to the bottom of the window sash, which can compensate for the window sash collapse problem and restore smooth sliding.

[0034] Example 2: Flat-head roller assembly (concave roller) Based on Embodiment 1, the roller in this example has an annular groove 5 with an arc-shaped cross-section in the center. The annular groove 5 is arranged around the circumference of the roller and is used to cooperate with the protruding structure in the middle of the convex rail of some models of window frames to achieve a height match with the added window sash.

[0035] Example 3: Round-headed roller assembly (flat roller) Includes wheel frame, roller body 1, and mounting plate 4.

[0036] Roller body 1: adopts a structure of nylon / metal wheel + bearing, with the bearing centrally mounted on the wheel axle 2, which is used to fix the wheel frame.

[0037] Wheel frame: Made of sheet metal and / or welded, the wheel frame includes two opposing side plates 3, which are generally rectangular and include a top side and a bottom side depending on the usage. The top side of the side plate 3 is used to contact the bottom of the track groove below the installed window sash. A wheel axle 2 and a roller body 1 are installed on the side plate 3 near the bottom side, and the bottom circumference of the roller body 1 protrudes downward from the bottom side of the side plate 3.

[0038] Mounting plate 4: Mounting plate 4 is set upright, and its bottom side is fixedly welded to one end of the two side plates 3. The bottom side of mounting plate 4 does not exceed the bottom side of the side plate 3. Mounting plate 4 is provided with mounting hole 6. The mounting hole 6 is an oblong hole extending along the height direction of mounting plate 4. At least two fasteners can pass through the oblong hole. The fasteners are pointed screws. The installation position can be selected arbitrarily, and the mounting plate 4 can be flexibly and quickly fixed to the bottom of the side of the window sash.

[0039] A connecting part 7 is provided at the end of the wheel frame away from the mounting plate 4. The connecting part 7 is a semi-circular arc-shaped metal plate, and the upper end surface of the connecting part 7 is flush with the top side of the side plate 3, so as to jointly contact the bottom of the track groove and strengthen the installation and fixation. A mounting hole is passed through the middle of the connecting part, and a fastener passes through the mounting hole and is used to fix it to the bottom of the track groove, thereby fixing it on two surfaces at the bottom corner of the window sash respectively, improving the fixing effect.

[0040] The aforementioned mounting holes are pre-drilled holes for installing fasteners; they are not mandatory. After mounting on the side using the mounting plate to set the height, fasteners may not be needed inside the mounting holes. The semi-circular arc structure and flange of the connecting part enhance the overall wheel frame structure. The side of the connecting part is provided with a retaining edge that protrudes towards the bottom (near the roller body) to protect the fastener and reduce damage during sliding.

[0041] The bottom side of the side plate near the connecting part has a chamfered structure.

[0042] Example 4: Round-headed roller assembly (concave roller) Includes wheel frame, roller body 1, and mounting plate 4.

[0043] Roller body 1: Constructed with a nylon / metal wheel, bearing, and axle 2. The roller body 1 has a centrally located annular groove 5 with an arc-shaped cross-section, which extends around the circumference of the roller. Wheel frame: The wheel frame includes two opposing side plates 3, the top side of the side plate 3 is in contact with the bottom of the window sash track groove, and the roller body 1 is installed between the two side plates 3 and protrudes from the bottom side of the side plate 3.

[0044] Mounting piece 4: Its bottom side is welded and fixed to one end of the two side plates 3. Two circular mounting holes 6 pass through the mounting piece 4, and pointed screws pass through the mounting holes 6 to fix it to the bottom of the side of the window sash.

[0045] Notch grooves 10 are provided at the top of both sides of the mounting plate 4.

[0046] The wheel frame has a connecting part 7 at the end away from the mounting plate 4. The connecting part 7 is a semi-circular arc-shaped metal sheet, and the upper end surface of the connecting part 7 is flush with the top side of the side plate 3. The connecting part 7 has a mounting hole 8 through its middle, and the side of the connecting part 7 has a baffle 9 protruding towards the bottom. The bottom side of the side plate 3 near the connecting part 7 has a chamfered structure 11.

[0047] Specifically, the advantages of the above product series include: No window sash disassembly is required, and installation is quick. It is especially designed for the aging and renovation of existing PVC sliding windows. No professional workers are needed; it can be installed by yourself in a "foolproof" manner. Simply pry up the window sash and screw it on (with screws) to achieve a simplified and quick installation, making it easy to upgrade your window sash.

[0048] Smooth operation: Rolling friction replaces sliding friction, reducing opening and closing force by more than 50%.

[0049] Smooth gliding, noise reduction and vibration damping.

[0050] By avoiding direct wear on the profile tracks, the lifespan of the window frame can be extended by 3–5 years.

[0051] By using rollers to elevate the window sash, problems such as deformation and sagging of the window sash, as well as the obvious gaps, poor sealing, and easy detachment caused by sagging are solved.

[0052] If necessary, the height can be finely adjusted by adjusting the installation position of the mounting plate on one side of the window sash to solve the problem of "high and low sashes" caused by profile deformation.

[0053] When sliding windows exhibit any of the following symptoms: "sluggishness, jamming, noise, or detachment," or if they are large-pane, high-rise, or have a lift-and-pull system, this roller assembly should be installed at the bottom. This allows for a "light, quiet, stable, durable, and safe" renovation in just one minute without disassembly or removal.

Claims

1. A roller assembly for a sliding window sash, characterized in that, The device includes a wheel frame, which comprises two symmetrically arranged and horizontally extending side plates. A roller body is rotatably mounted between the side plates. The bottom circumferential surface of the roller body protrudes from the bottom side of the side plates. An upwardly extending mounting piece is fixed to one end of each side plate. The bottom side of the mounting piece is higher than the bottom side of the side plate. The mounting piece is located between the two side plates and is perpendicular to the side plates. A fastener is threaded through the mounting piece.

2. The roller assembly for a sliding window sash according to claim 1, characterized in that, The mounting plate has a through mounting hole, and the fastener is provided through the mounting hole.

3. The roller assembly for a sliding window sash according to claim 2, characterized in that, The mounting hole is a circular hole.

4. The roller assembly for a sliding window sash according to claim 2, characterized in that, The mounting hole is a waist-shaped hole that extends in the same direction as the length of the mounting piece.

5. The roller assembly for a sliding window sash according to claim 1, characterized in that, The roller body is coaxially permeated by an axle that is rotatably mounted to it based on a bearing, and the two ends of the axle are vertically fixed to a side plate on the same side.

6. The roller assembly for a sliding window sash according to claim 1, characterized in that, The side plate has a connecting part at the end away from the mounting piece, and the two sides of the connecting part are respectively fixedly connected to one end of the side plate on the same side.

7. The roller assembly for a sliding window sash according to claim 6, characterized in that, The connecting part extends in a straight line along the vertical distance between the two side plates, or the connecting part is a semi-circular arc-shaped metal sheet, and the upper end surface of the connecting part is flush with the top side of the side plate. The connecting part has a through hole in the middle and a baffle protruding towards the bottom side on the side.

8. The roller assembly for a sliding window sash according to claim 6, characterized in that, The bottom side of the side plate near the connecting part has a chamfered structure.

9. The roller assembly for a sliding window sash according to claim 1, characterized in that, The top of both sides of the mounting plate is provided with notch grooves.

10. The roller assembly for a sliding window sash according to claim 1, characterized in that, The roller body has an annular groove with an arc-shaped cross-section in the center, and the annular groove is arranged around the circumference of the roller body.

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