Size-adjustable door and window pulley
By designing adjustable door and window pulleys, including a combination of adjustment wheels and fixing rods, as well as fixing mechanisms for magnets and support rings, the problem of inconvenient adjustment and replacement of existing pulleys is solved, and flexible adjustment of pulley size and rapid replacement of wheels are achieved.
Patent Information
- Application Number
- CN202421532640.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-06-29
AI Technical Summary
The existing door and window pulleys have simple structures, which are inconvenient to adjust the size of the pulleys, and it is difficult to replace the wheels when they are damaged, resulting in waste.
An adjustable size door and window pulley including a support mechanism and a pulley mechanism is designed. Through the design of the adjustment wheel and the fixing rod, the pulley is switched to different diameter pulleys, and the pulley is replaced by a fixing mechanism of the magnet and the support ring.
It realizes flexible adjustment of pulley size and rapid replacement of wheels, avoids waste and improves the efficiency and stability of pulleys.
Smart Images
Figure CN223003917U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door and window pulleys, and more specifically, to a door and window pulley with adjustable size. Background Art
[0002] As is well known, door and window pulleys are often provided between pull-type doors and windows and door and window frames to reduce resistance and facilitate pushing and pulling. Conventional door and window pulleys include plastic pulleys and metal pulleys.
[0003] The existing door and window pulley structure is too simple. When in use, it is inconvenient to adjust the size of the pulley. When the wheel in the pulley is damaged, it is inconvenient to replace the wheel, resulting in a certain waste. Summary of the Utility Model
[0004] To make up for the above deficiencies, the utility model provides a door and window pulley with adjustable size.
[0005] The utility model is implemented as follows:
[0006] A door and window pulley with adjustable size includes a support mechanism and a pulley mechanism. The support mechanism includes a support cover. A cavity is provided at the bottom of the support cover. Through holes connected to the cavity are opened on both sides of the support cover. Fixed rods are slidably arranged in the through holes. The support mechanism further includes a first fixing mechanism, and the first fixing mechanism is located at one end of the fixed rod. The pulley mechanism includes an adjusting wheel. The adjusting wheel is installed on the outside of the fixed rod. Four groups of grooves are equidistantly opened on the outside of the adjusting wheel. A number of connection holes connected to the grooves are opened on both sides of the adjusting wheel. Rotating shafts are slidably arranged in the connection holes. Pulleys are installed on the outside of the rotating shafts. The pulley mechanism includes a second fixing mechanism, and the second fixing mechanism fixes both ends of the rotating shaft.
[0007] The beneficial effect of adopting the above further scheme is that after the first fixing mechanism does not fix one end of the fixed rod, the adjusting wheel can rotate together with the fixed rod. Since the diameters of the pulleys installed in the four groups of grooves are inconsistent, the rotating adjusting wheel can turn out pulleys with different diameters from the cavity to achieve the purpose of switching pulleys of different sizes. At the same time, after the second fixing mechanism no longer fixes the rotating shaft, the rotating shaft can be taken out. At this time, the pulley can be taken out of the groove to achieve the purpose of replacing the pulley.
[0008] Further, the first fixing mechanism includes a bolt and a baffle. Counter bores connected to the through holes are further opened on both sides of the support cover. The baffle is installed at one end of the fixed rod and abuts against one of the counter bores. A threaded hole is opened at the other end of the fixed rod. The bolt passes through the through hole and is in threaded engagement with the threaded hole. The bolt head abuts against the other counter bore.
[0009] The beneficial effect of adopting the above further solution is that after the bolt is screwed into the threaded hole, the bolt head will abut against the counterbore on one side. Under the action of friction, the fixing rod can be fixed to prevent the pulley from shaking.
[0010] Further, a spring washer is provided in the counterbore on the other side.
[0011] The beneficial effect of adopting the above further solution is that under the action of the spring washer, the friction between the bolt head and the counterbore can be increased.
[0012] Further, a fixing hole is provided at the center of the adjusting wheel, and the fixing rod passes through the fixing hole.
[0013] Further, the second fixing mechanism includes several pairs of magnets and several pairs of support rings. The support rings are installed on the wall surface of the groove and connected to the connection holes. Both ends of the rotating shaft are located inside the support rings. The magnets are located inside the connection holes and abut against one side of the support rings. The magnets and both ends of the rotating shaft adsorb each other.
[0014] The beneficial effect of adopting the above further solution is that the two ends of the rotating shaft are adsorbed by the magnets. At this time, the magnets abut against one side of the support rings, preventing the rotating shaft from disengaging from the connection hole.
[0015] Further, an opening is provided at the center of the pulley, and the rotating shaft passes through the opening.
[0016] Further, the rotating shaft includes a pair of pin shafts and a connecting shaft. The pair of pin shafts are rotatably installed at both ends of the connecting shaft.
[0017] The beneficial effect of adopting the above further solution is that with the rotatable connecting shaft and pin shafts, after the two ends of the rotating shaft are adsorbed by the magnets, the middle connecting shaft can rotate independently, enabling the pulley to rotate.
[0018] Further, shock pads are installed on both sides of the support cover.
[0019] The beneficial effect of the present utility model is as follows: An adjustable-size door and window pulley obtained by the above design of the present utility model. After the first fixing mechanism fixes one end of the fixing rod, the adjusting wheel can rotate together with the fixing rod. Since the diameters of the pulleys installed in the four groups of grooves are inconsistent, the rotating adjusting wheel can turn out pulleys with different diameters from the cavity to achieve the purpose of switching pulleys of different sizes. At the same time, after the second fixing mechanism no longer fixes the rotating shaft, the rotating shaft can be taken out. At this time, the pulley can be taken out from the groove to achieve the purpose of replacing the pulley. Description of the Drawings
[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0021] Figure 1 Schematic three-dimensional structure diagram of an adjustable-size door and window pulley provided by the present utility model;
[0022] Figure 2 Schematic first exploded structure diagram of an adjustable-size door and window pulley provided by the present utility model;
[0023] Figure 3 Schematic second exploded structure diagram of an adjustable-size door and window pulley provided by the present utility model;
[0024] Figure 4 For Figure 3 Schematic enlarged structure diagram of structure A in
[0025] In the figure: 100, support mechanism; 1001, support cover; 1002, through hole; 1003, counterbore; 1004, fixing rod; 1005, baffle; 1006, threaded hole; 1007, bolt; 1008, shock pad; 200, pulley mechanism; 2001, adjusting wheel; 2002, fixing hole; 2003, groove; 2004, pulley; 2005, opening; 2006, rotating shaft; 2007, magnet; 2008, connecting hole; 2009, support ring. Specific embodiments
[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0028] Embodiment 1 of an adjustable-size door and window pulley of the present utility model
[0029] The present utility model provides the following technical solutions: As Figure 1 - Figure 4 , it includes a support mechanism 100 and a pulley mechanism 200. The support mechanism 100 includes a support cover 1001. A cavity is provided at the bottom of the support cover 1001. Through holes 1002 connected to the cavity are opened on both sides of the support cover 1001. A fixing rod 1004 is slidably arranged in the through holes 1002. The support mechanism 100 further includes a first fixing mechanism, and the first fixing mechanism is located at one end of the fixing rod 1004. The pulley mechanism 200 includes an adjusting wheel 2001. The adjusting wheel 2001 is installed on the outer side of the fixing rod 1004. Four groups of grooves 2003 are equidistantly opened on the outer side of the adjusting wheel 2001. A number of connection holes 2008 connected to the grooves 2003 are opened on both sides of the adjusting wheel 2001. A rotating shaft 2006 is slidably arranged in the connection holes 2008. Pulleys 2004 are installed on the outer sides of the rotating shafts 2006. The pulley mechanism 200 includes a second fixing mechanism. The second fixing mechanism fixes both ends of the rotating shaft 2006. After the first fixing mechanism does not fix one end of the fixing rod 1004, the adjusting wheel 2001 can rotate together with the fixing rod 1004. Since the diameters of the pulleys 2004 installed in the four groups of grooves 2003 are inconsistent, the rotating adjusting wheel 2001 can turn out the pulleys 2004 with different diameters from the cavity, so as to achieve the purpose of switching pulleys 2004 with different sizes. At the same time, after the second fixing mechanism no longer fixes the rotating shaft 2006, the rotating shaft 2006 can be taken out. At this time, the pulley 2004 can be taken out from the groove 2003, so as to achieve the purpose of replacing the pulley 2004.
[0030] Embodiment 2 of an adjustable-size door and window pulley of the present utility model
[0031] Refer to Figure 1 - Figure 4, Specifically, the first fixing mechanism includes a bolt 1007 and a baffle 1005. Counterbores 1003 connected to the through holes 1002 are also provided on both sides of the support cover 1001. The baffle 1005 is installed at one end of the fixing rod 1004 and abuts against the counterbore 1003 on one side. A threaded hole 1006 is provided at the other end of the fixing rod 1004. The bolt 1007 passes through the through hole 1002 and is threadedly engaged with the threaded hole 1006. The bolt head of the bolt 1007 abuts against the counterbore 1003 on the other side. After the bolt 1007 is screwed into the threaded hole 1006, the bolt head of the bolt 1007 will abut against the counterbore 1003 on one side. Under the action of friction, the fixing rod 1004 can be fixed to prevent the pulley 2004 from shaking. The second fixing mechanism includes several pairs of magnets 2007 and several pairs of support rings 2009. The support rings 2009 are installed on the wall surface of the groove 2003 and are connected to the connection holes 2008. Both ends of the rotating shaft 2006 are located inside the support rings 2009. The magnets 2007 are located inside the connection holes 2008 and abut against one side of the support rings 2009. The magnets 2007 and both ends of the rotating shaft 2006 are adsorbed to each other. The magnets 2007 are used to adsorb both ends of the rotating shaft 2006. At this time, the magnets 2007 abut against one side of the support rings 2009, so that the rotating shaft 2006 cannot be disengaged from the connection holes 2008.
[0032] Embodiment III of an adjustable-size door and window pulley of the present utility model
[0033] Refer to Figure 1 - Figure 4 , Specifically, the rotating shaft 2006 includes a pair of pin shafts and a connecting shaft. The pair of pin shafts are rotatably installed at both ends of the connecting shaft. By using the rotatable connecting shaft and pin shafts, after the magnets 2007 adsorb both ends of the rotating shaft 2006, the connecting shaft in the middle can rotate independently, so that the pulley 2004 can rotate.
[0034] Specifically, the working principle of this adjustable-size door and window pulley: During use, after the first fixing mechanism does not fix one end of the fixing rod 1004, the adjusting wheel 2001 can rotate together with the fixing rod 1004. Since the diameters of the pulleys 2004 installed in the four groups of grooves 2003 are inconsistent, the rotating adjusting wheel 2001 can turn out the pulleys 2004 with different diameters from the cavity, so as to achieve the purpose of switching pulleys 2004 of different sizes. After the bolt 1007 is screwed into the threaded hole 1006, the bolt head of the bolt 1007 will abut against the counterbore 1003 on one side. Under the action of friction, the fixing rod 1004 can be fixed to prevent the pulley 2004 from shaking. After the second fixing mechanism no longer fixes the rotating shaft 2006, the rotating shaft 2006 can be taken out. At this time, the pulley 2004 can be taken out of the groove 2003 to achieve the purpose of replacing the pulley 2004. The two ends of the rotating shaft 2006 are adsorbed by the magnet 2007. At this time, the magnet 2007 abuts against one side of the support ring 2009, so that the rotating shaft 2006 cannot be disengaged from the connection hole 2008.
[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A door and window pulley with adjustable size, characterized in that: The invention comprises a support mechanism (100) and a pulley mechanism (200), wherein the support mechanism (100) comprises a support cover (1001), a cavity is provided at the bottom of the support cover (1001), through holes (1002) connected to the cavity are provided on both sides of the support cover (1001), a fixing rod (1004) is slidably provided in the through hole (1002), the support mechanism (100) further comprises a first fixing mechanism, and the first fixing mechanism is located at one end of the fixing rod (1004), and the pulley mechanism (200) comprises an adjusting wheel (2001), The adjusting wheel (2001) is mounted on the outside of the fixing rod (1004); four groups of grooves (2003) are equidistantly provided on the outside of the adjusting wheel (2001); a plurality of connecting holes (2008) connected to the grooves (2003) are provided on both sides of the adjusting wheel (2001); a rotating shaft (2006) is slidably provided inside the connecting hole (2008); a pulley (2004) is mounted on the outside of each rotating shaft (2006); and the pulley mechanism (200) comprises a second fixing mechanism, which fixes both ends of the rotating shaft (2006).
2. The size-adjustable door and window pulley according to claim 1, characterized in that: The first fixing mechanism comprises a bolt (1007) and a baffle (1005); countersunk holes (1003) connected to the through holes (1002) are provided on both sides of the support cover (1001); the baffle (1005) is installed on one end of the fixing rod (1004) and abuts against the countersunk hole (1003) on one side; a threaded hole (1006) is provided on the other end of the fixing rod (1004); the bolt (1007) passes through the through hole (1002) and is threadedly engaged with the threaded hole (1006); and the screw head of the bolt (1007) abuts against the countersunk hole (1003) on the other side.
3. The size-adjustable door and window pulley according to claim 2, characterized in that: A spring washer is provided in the countersunk hole (1003) on the other side.
4. The size-adjustable door and window pulley according to claim 1, characterized in that: A fixing hole (2002) is provided at the center of the adjusting wheel (2001), and the fixing rod (1004) passes through the fixing hole (2002).
5. The size-adjustable door and window pulley according to claim 1, characterized in that: The second fixing mechanism comprises a plurality of pairs of magnets (2007) and a plurality of pairs of support rings (2009); the support rings (2009) are mounted on the wall surface of the groove (2003) and connected to the connecting hole (2008); the two ends of the rotating shaft (2006) are located in the support rings (2009); the magnets (2007) are located in the connecting hole (2008) and abut against one side of the support rings (2009); the magnets (2007) and the two ends of the rotating shaft (2006) are attracted to each other.
6. The size-adjustable door and window pulley according to claim 5, characterized in that: An opening (2005) is provided at the center of the pulley (2004), and the rotating shaft (2006) passes through the opening (2005).
7. The size-adjustable door and window pulley according to claim 6, characterized in that: The rotating shaft (2006) comprises a pair of pin shafts and a connecting shaft, and the pair of pin shafts are rotatably mounted at both ends of the connecting shaft.
8. The size-adjustable door and window pulley according to claim 1, characterized in that: Shock-absorbing pads (1008) are installed on both sides of the support cover (1001).