Pulley assembly for side-hinged windows

Abstract

The utility model discloses a pulley assembly for side pressure window includes upper pulley assembly and lower pulley assembly, and lower pulley assembly includes first bottom plate, first base, first fixed block and lower pulley wheel group, is seted up with first inclined groove and first straight groove on the first bottom plate, and the first rivet fixed connection with first base is slidably connected in the first straight groove, is seted up with first waist type hole on the first base, and the middle part of first fixed block fixed in first base is seted up with first mounting hole and is inserted with two section of brush on it, and lower pulley wheel group includes first support, two lower pulley and a first bearing wheel, and the wheel surface of each lower pulley is contacted with a section of brush, and the first support is fixed at first mounting hole, and its bottom is fixed with the first shift lever of sliding connection with first bottom plate. The pulley assembly can realize the reliable translation of side pressure door, and has the self -cleaning function, can improve the smoothness and stability in the process of side pressure window translation greatly, thereby improving the service life and user experience of side pressure window.

Description

Technical Field

[0001] This utility model belongs to the field of door and window hardware system accessories, specifically relating to a pulley assembly for a side-pressure window. Background Technology

[0002] Side-press windows achieve lateral sealing between the window sash and frame through a multi-point locking mechanism. They are primarily used in building environments with high requirements for airtightness, watertightness, and sound insulation. Compared to conventional casement windows, they offer certain advantages in overall sealing performance. Because the sealing function of side-press windows relies on the precise displacement and final compression state of the window sash during the closing process, they require high installation precision, as well as the rigidity and processing quality of the profiles used for the window frame and sash. The hardware system for side-press windows typically requires the use of high-end profiles with regular structures and precise grooves.

[0003] The hardware system of a side-sliding window is complex, typically including an upper pulley assembly, corner assembly, locking point assembly, handle assembly, lower pulley assembly, and center lock assembly. These components are connected as a whole by multiple transmission rods, and through precise linkage and transmission between the components, the side-sliding window's sliding, locking, and opening actions are achieved. During locking or unlocking, the side-sliding window needs to move towards the interior or exterior. The upper and lower pulley assemblies are key components for achieving the sliding action of the side-sliding window. Because the lower pulley assembly is located at the bottom of the side-sliding window, its roller surfaces easily accumulate dust and dirt. When this accumulation reaches a certain level, it can cause jamming, abnormal noise, or blockage during the sliding process, affecting not only the smoothness, stability, and lifespan of the side-sliding window, but also increasing maintenance difficulty and impacting the user experience. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pulley assembly for a side-pressure window, which can realize the reliable sliding of the side-pressure door and has a self-cleaning function, which can greatly improve the smoothness and stability of the side-pressure window during the sliding process, thereby improving the service life of the side-pressure window and the user experience.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a pulley assembly for a side-pressure window, including an upper pulley assembly and a lower pulley assembly, wherein the upper pulley assembly and the lower pulley assembly are respectively installed on the upper side and the lower side of the window sash profile. The lower pulley assembly includes a first base plate, a first base, a first fixing block and a lower pulley assembly arranged sequentially from top to bottom. The first base plate has a first inclined groove and two first straight grooves in the left and right directions. First rivets are slidably connected in both first straight grooves. The first base is fixedly connected to the first rivets. The first base has a first oblong hole in the front and back direction. The first fixing block is fixed to the lower pulley assembly. The first base has a first mounting hole in the middle of the first fixing block. Two brushes arranged in the front-to-back direction are embedded in the first fixing block. The lower roller assembly includes a first bracket, two lower rollers mounted on the first bracket, and a first bearing wheel. The axis of each lower roller is in the front-to-back direction, and the axis of the first bearing wheel is in the up-down direction. The wheel surface of each lower roller is in contact with one of the brushes. The first bracket is fixed at the first mounting hole. A first actuating rod is fixed at the bottom of the first bracket. The first actuating rod passes through the first mounting hole and the first waist-shaped hole in sequence and extends into the first inclined groove to slide and connect with the first base plate.

[0006] This utility model's pulley assembly enables reliable sliding of the side-pressing door and features a self-cleaning function. After installation, the first bearing wheel embeds into the groove at the bottom of the window frame profile, with its wheel surface contacting the front and rear sides of the groove, preventing the side-pressing window from wobbling back and forth. The two lower sliding wheels use the groove at the bottom of the window frame profile as sliding tracks. During the side-pressing window's sliding, inward locking, or outward unlocking process, the brush removes dirt from the lower sliding wheels, effectively preventing dust and dirt accumulation, keeping the wheels clean, and eliminating jamming, noise, or blockage caused by dirt. This significantly improves the smoothness and stability of the side-pressing window's sliding process, thereby extending its service life and enhancing the user experience.

[0007] Preferably, the first bracket includes a first mounting plate and a first support base. The first actuating rod is fixed to the top of the first mounting plate, and the first support base is fixed to the bottom of the first mounting plate. The first support base has an inverted trapezoidal cube structure, and a first shaft is fixed to the bottom of the first support base. The first bearing wheel is mounted on the first shaft. After the side-pressure window is installed, its weight is mainly borne by the sliding wheel assembly. The inverted trapezoidal cube structure of the first support base helps to distribute the pressure from the side-pressure window, avoid stress concentration, and improve the load-bearing capacity and deformation resistance of the sliding wheel assembly.

[0008] As a further preferred embodiment, the first mounting plate has first retaining strips on both sides of its edge, and the two side walls of the first mounting hole have corresponding first retaining grooves, with the first retaining strips being snapped into and fixed within the first retaining grooves. The cooperation between the first retaining strips and the first retaining grooves enables rapid positioning and assembly between the first bracket and the first fixing block, simplifying the assembly process and improving assembly efficiency.

[0009] Preferably, the upper pulley assembly includes, from top to bottom, an upper pulley wheel group, a second fixing block, a second base, and a second bottom plate. The second bottom plate has a second inclined groove and two second straight grooves in the left-right direction. Second rivets are slidably connected to both second straight grooves. The second base is fixedly connected to the second rivets. A second oblong hole in the front-back direction is opened on the second base. The second fixing block is fixed to the second base, and a second mounting hole is opened in the middle of the second fixing block. The upper pulley wheel group includes a second bracket and a second bearing wheel mounted on the second bracket. The axis of the second bearing wheel is along the vertical direction. The second bracket is fixed at the second mounting hole. A second actuating rod is fixed to the bottom of the second bracket. The second actuating rod passes through the second mounting hole and the second oblong hole, extends into the second inclined groove, and slidably connects with the second bottom plate. After installation, the second bearing wheel is embedded in the groove at the top of the window frame profile, with its wheel surface contacting the front and rear sides of the groove, further preventing the side-pressure window from wobbling back and forth. The aforementioned upper pulley assembly, in conjunction with the lower pulley assembly, can prevent swaying of the side-pressure window at different vertical positions, provide better front-to-back positioning of the side-pressure window, and further improve the stability of the side-pressure window's horizontal movement.

[0010] As a further preferred embodiment, the second bracket includes a second mounting plate and a second support base. The second support base is fixed to the top of the second mounting plate, and the second actuating rod is fixed to the bottom of the second mounting plate. The second support base has a trapezoidal cubic structure, and a second shaft is fixed to the top of the second support base. The second bearing wheel is mounted on the second shaft. The trapezoidal cubic structure of the second support base can evenly distribute the load from the second bearing wheel, avoiding stress concentration and improving the deformation resistance of the upper pulley assembly.

[0011] As a further preferred embodiment, the second mounting plate has second retaining strips on both sides of its two edges, and the second mounting hole has corresponding second retaining grooves on both sides of its two sides. The second retaining strips are then engaged and fixed within the second retaining grooves. The cooperation between the second retaining strips and the second retaining grooves enables rapid positioning and assembly between the second bracket and the second fixing block, simplifying the assembly process and improving assembly efficiency.

[0012] Compared with existing technologies, this utility model has the following advantages: The pulley assembly of this utility model enables reliable sliding of the side-pressing door and has a self-cleaning function. During the sliding, inward locking, or outward unlocking of the side-pressing window, the brush can remove dirt from the sliding rollers, effectively preventing dust and dirt, keeping the rollers clean, and eliminating jamming, abnormal noise, or blockage caused by dirt. This significantly improves the smoothness and stability of the side-pressing window during sliding, thereby extending the service life of the side-pressing window and improving the user experience. Attached Figure Description

[0013] Figure 1 This is an external view of the upper pulley assembly in the embodiment; Figure 2 This is an exploded view of the upper pulley assembly in the embodiment; Figure 3 This is an external view of the pulley assembly in the embodiment; Figure 4 This is an exploded view of the pulley assembly in the embodiment; Figure 5 This is an external view of the first bracket in the embodiment; Figures 1-5 The specific reference numerals in the attached figures are as follows: 1-Upper pulley assembly, 11-Second base plate, 111-Second inclined groove, 112-Second straight groove, 113-Second rivet, 12-Second base, 121-Second oblong hole, 13-Second fixing block, 131-Second mounting hole, 132-Second slot, 14-Lower pulley assembly, 141-Second bracket, 142-Second bearing wheel, 143-Second actuating rod, 144-Second mounting plate, 145-Second support seat, 146-Second shaft, 147-Second retaining strip, 2-Lower pulley assembly 21-First base plate, 211-First inclined groove, 212-First straight groove, 213-First rivet, 22-First base, 221-First waist-shaped hole, 23-First fixing block, 231-First mounting hole, 232-Brush, 233-First slot, 24-Sliding wheel assembly, 241-First bracket, 242-Sliding wheel, 243-First bearing wheel, 244-First lever, 245-First mounting plate, 246-First support seat, 247-First shaft, 248-First locking strip. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Any devices or components not limited in this invention employ conventional techniques in the art.

[0015] The side-pressure window pulley assembly of the embodiment includes Figures 1-2 The upper pulley assembly 1 and shown Figures 3-4The lower pulley assembly 2, the upper pulley assembly 1, and the lower pulley assembly 2 are respectively installed on the upper and lower sides of the window sash profile (not shown in the figure).

[0016] like Figure 3 and Figure 4 As shown, the lower roller assembly 2 includes a first base plate 21, a first base 22, a first fixing block 23, and a lower roller assembly 24 arranged sequentially from top to bottom. The first base plate 21 has a first inclined groove 211 and two first straight grooves 212 in the left-right direction. First rivets 213 are slidably connected in both first straight grooves 212. The first base 22 is fixedly connected to the first rivets 213. The first base 22 has a first waist-shaped hole 221 in the front-back direction. The first fixing block 23 is fixed to the first base 22. A first mounting hole 231 is opened in the middle of the first fixing block 23. Two sections along the front-back direction are embedded in the first fixing block 23. The brush 232 is arranged in a certain direction. The lower roller assembly 24 includes a first bracket 241, two lower rollers 242 mounted on the first bracket 241, and a first bearing roller 243. The axis of each lower roller 242 is along the front-back direction, and the axis of the first bearing roller 243 is along the up-down direction. The wheel surface of each lower roller 242 is in contact with a section of brush 232. The first bracket 241 is fixed at the first mounting hole 231. A first actuating rod 244 is fixed at the bottom of the first bracket 241. The first actuating rod 244 passes through the first mounting hole 231 and the first waist-shaped hole 221 in sequence and extends into the first inclined groove 211 to slide and connect with the first base plate 21.

[0017] like Figure 5 As shown, the first bracket 241 includes a first mounting plate 245 and a first support base 246. A first actuating rod 244 is fixed to the top of the first mounting plate 245, and the first support base 246 is fixed to the bottom of the first mounting plate 245. The first support base 246 has an inverted trapezoidal cubic structure. A first shaft 247 is fixed to the bottom of the first support base 246. A first bearing wheel 243 is installed on the first shaft 247. First locking strips 248 are provided on both sides of the first mounting plate 245. First slots 233 are provided on both sides of the first mounting hole 231. The first locking strips 248 are snapped into the first slots 233.

[0018] like Figure 1 and Figure 2As shown, the upper pulley assembly 1 includes an upper pulley wheel group 14, a second fixing block 13, a second base 12, and a second base plate 11 arranged sequentially from top to bottom. The second base plate 11 has a second inclined groove 111 and two second straight grooves 112 in the left-right direction. Second rivets 113 are slidably connected in both second straight grooves 112. The second base 12 is fixedly connected to the second rivets 113. The second base 12 has a second oblong hole 121 in the front-back direction. The second fixing block 13 is fixed to the second base 12. The second fixed block 13 has a second mounting hole 131 in the middle. The upper pulley wheel assembly 14 includes a second bracket 141 and a second bearing wheel 142 mounted on the second bracket 141. The axis of the second bearing wheel 142 is along the vertical direction. The second bracket 141 is fixed at the second mounting hole 131. A second actuating rod 143 is fixed at the bottom of the second bracket 141. The second actuating rod 143 passes through the second mounting hole 131 and the second waist-shaped hole 121 in sequence and extends into the second inclined groove 111 to slide and connect with the second base plate 11.

[0019] like Figure 2 As shown, the second bracket 141 includes a second mounting plate 144 and a second support base 145. The second support base 145 is fixed to the top of the second mounting plate 144, and the second actuating rod 143 is fixed to the bottom of the second mounting plate 144. The second support base 145 has a trapezoidal cubic structure. A second shaft 146 is fixed to the top of the second support base 145. A second bearing wheel 142 is installed on the second shaft 146. Second locking strips 147 are provided on both sides of the second mounting plate 144. Second locking grooves 132 are provided on both sides of the second mounting hole 131. The second locking strips 147 are locked in the second locking grooves 132.

[0020] After the aforementioned side-pressure window pulley assembly is installed, the first bearing wheel 243 is embedded in the groove at the bottom of the window frame profile (not shown in the figure), with its wheel surface contacting the front and rear sides of the groove, thus preventing the side-pressure window from swaying back and forth. The two lower sliding wheels 242 use the groove at the bottom of the window frame profile as sliding tracks. The second bearing wheel 142 is embedded in the groove at the top of the window frame profile, with its wheel surface contacting the front and rear sides of the groove, also preventing the side-pressure window from swaying back and forth. The upper pulley assembly 1, in conjunction with the lower sliding wheel assembly 2, can prevent the side-pressure window from swaying at different vertical positions, and provide a front-to-back positioning effect, improving the stability of the side-pressure window's horizontal movement. During the movement of the side-press window, whether it is sliding, locking towards the inside, or unlocking towards the outside, the brush 232 can remove dirt from the sliding roller 242, effectively preventing dust and dirt, keeping the sliding roller 242 clean, eliminating jamming, abnormal noise, or blockage caused by dirt, and greatly improving the smoothness and stability of the side-press window during the sliding process, thereby improving the service life of the side-press window and the user experience.

Claims

1. A pulley assembly for a side-pressure window, comprising an upper pulley assembly and a lower pulley assembly, wherein the upper pulley assembly and the lower pulley assembly are respectively installed on the upper and lower sides of the window sash profile, characterized in that, The sliding wheel assembly includes a first base plate, a first base, a first fixing block, and a sliding wheel assembly arranged sequentially from top to bottom. The first base plate has a first inclined groove and two first straight grooves in the left and right directions. First rivets are slidably connected in both first straight grooves. The first base is fixedly connected to the first rivets. The first base has a first waist-shaped hole in the front-back direction. The first fixing block is fixed to the first base. A first mounting hole is opened in the middle of the first fixing block. Two brushes arranged in the front-back direction are embedded in the first fixing block. The sliding wheel assembly includes a first bracket, two sliding wheels mounted on the first bracket, and a first bearing wheel. The axis of each sliding wheel is in the front-back direction, and the axis of the first bearing wheel is in the up-down direction. The wheel surface of each sliding wheel is in contact with a section of the brush. The first bracket is fixed at the first mounting hole. A first actuating rod is fixed at the bottom of the first bracket. The first actuating rod passes through the first mounting hole and the first waist-shaped hole in sequence and extends into the first inclined groove to slide and connect with the first base plate.

2. The pulley assembly for a side-pressure window according to claim 1, characterized in that, The first bracket includes a first mounting plate and a first support base. The first actuating rod is fixed to the top of the first mounting plate, and the first support base is fixed to the bottom of the first mounting plate. The first support base has an inverted trapezoidal cubic structure. A first shaft is fixed to the bottom of the first support base, and the first bearing wheel is mounted on the first shaft.

3. The pulley assembly for a side-pressure window according to claim 2, characterized in that, The first mounting plate has a first locking strip on each of its two side edges, and the first mounting hole has a first locking groove on each of its two side walls. The first locking strip is fixedly inserted into the first locking groove.

4. The pulley assembly for a side-pressure window according to claim 1, characterized in that, The upper pulley assembly includes an upper pulley wheel group, a second fixing block, a second base, and a second bottom plate arranged sequentially from top to bottom. The second bottom plate has a second inclined groove and two second straight grooves in the left and right directions. A second rivet is slidably connected in each of the two second straight grooves. The second base is fixedly connected to the second rivet. A second waist-shaped hole in the front and back direction is opened on the second base. The second fixing block is fixed to the second base. A second mounting hole is opened in the middle of the second fixing block. The upper pulley wheel group includes a second bracket and a second bearing wheel installed on the second bracket. The axis of the second bearing wheel is in the up and down direction. The second bracket is fixed at the second mounting hole. A second actuating rod is fixed at the bottom of the second bracket. The second actuating rod passes through the second mounting hole and the second waist-shaped hole in sequence and extends into the second inclined groove to slide and connect with the second bottom plate.

5. The pulley assembly for a side-pressure window according to claim 4, characterized in that, The second bracket includes a second mounting plate and a second support base. The second support base is fixed to the top of the second mounting plate, and the second actuating rod is fixed to the bottom of the second mounting plate. The second support base has a trapezoidal cubic structure, and a second shaft is fixed to the top of the second support base. The second bearing wheel is mounted on the second shaft.

6. The pulley assembly for a side-pressure window according to claim 5, characterized in that, The second mounting plate has a second locking strip on each of its two side edges, and the two side walls of the second mounting hole have a corresponding second locking groove, and the second locking strip is fixedly inserted into the second locking groove.

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